diff options
Diffstat (limited to 'drivers/char')
94 files changed, 6671 insertions, 6530 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 929d4fa73fd..5dce3877eee 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -80,6 +80,15 @@ config VT_HW_CONSOLE_BINDING information. For framebuffer console users, please refer to <file:Documentation/fb/fbcon.txt>. +config DEVKMEM + bool "/dev/kmem virtual device support" + default y + help + Say Y here if you want to support the /dev/kmem device. The + /dev/kmem device is rarely used, but can be used for certain + kind of kernel debugging operations. + When in doubt, say "N". + config SERIAL_NONSTANDARD bool "Non-standard serial port support" depends on HAS_IOMEM diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h index c69f79598e4..99e6a406efb 100644 --- a/drivers/char/agp/agp.h +++ b/drivers/char/agp/agp.h @@ -35,7 +35,7 @@ //#define AGP_DEBUG 1 #ifdef AGP_DEBUG -#define DBG(x,y...) printk (KERN_DEBUG PFX "%s: " x "\n", __FUNCTION__ , ## y) +#define DBG(x,y...) printk (KERN_DEBUG PFX "%s: " x "\n", __func__ , ## y) #else #define DBG(x,y...) do { } while (0) #endif diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c index 3d468f502d2..37457e5a4f2 100644 --- a/drivers/char/amiserial.c +++ b/drivers/char/amiserial.c @@ -832,33 +832,34 @@ static void change_speed(struct async_struct *info, local_irq_restore(flags); } -static void rs_put_char(struct tty_struct *tty, unsigned char ch) +static int rs_put_char(struct tty_struct *tty, unsigned char ch) { struct async_struct *info; unsigned long flags; if (!tty) - return; + return 0; info = tty->driver_data; if (serial_paranoia_check(info, tty->name, "rs_put_char")) - return; + return 0; if (!info->xmit.buf) - return; + return 0; local_irq_save(flags); if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) { local_irq_restore(flags); - return; + return 0; } info->xmit.buf[info->xmit.head++] = ch; info->xmit.head &= SERIAL_XMIT_SIZE-1; local_irq_restore(flags); + return 1; } static void rs_flush_chars(struct tty_struct *tty) @@ -1074,6 +1075,7 @@ static int get_serial_info(struct async_struct * info, if (!retinfo) return -EFAULT; memset(&tmp, 0, sizeof(tmp)); + lock_kernel(); tmp.type = state->type; tmp.line = state->line; tmp.port = state->port; @@ -1084,6 +1086,7 @@ static int get_serial_info(struct async_struct * info, tmp.close_delay = state->close_delay; tmp.closing_wait = state->closing_wait; tmp.custom_divisor = state->custom_divisor; + unlock_kernel(); if (copy_to_user(retinfo,&tmp,sizeof(*retinfo))) return -EFAULT; return 0; @@ -1099,13 +1102,17 @@ static int set_serial_info(struct async_struct * info, if (copy_from_user(&new_serial,new_info,sizeof(new_serial))) return -EFAULT; + + lock_kernel(); state = info->state; old_state = *state; change_irq = new_serial.irq != state->irq; change_port = (new_serial.port != state->port); - if(change_irq || change_port || (new_serial.xmit_fifo_size != state->xmit_fifo_size)) + if(change_irq || change_port || (new_serial.xmit_fifo_size != state->xmit_fifo_size)) { + unlock_kernel(); return -EINVAL; + } if (!serial_isroot()) { if ((new_serial.baud_base != state->baud_base) || @@ -1122,8 +1129,10 @@ static int set_serial_info(struct async_struct * info, goto check_and_exit; } - if (new_serial.baud_base < 9600) + if (new_serial.baud_base < 9600) { + unlock_kernel(); return -EINVAL; + } /* * OK, past this point, all the error checking has been done. @@ -1157,6 +1166,7 @@ check_and_exit: } } else retval = startup(info); + unlock_kernel(); return retval; } @@ -1496,8 +1506,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp) rs_wait_until_sent(tty, info->timeout); } shutdown(info); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + rs_flush_buffer(tty); tty_ldisc_flush(tty); tty->closing = 0; @@ -1530,6 +1539,8 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout) return; /* Just in case.... */ orig_jiffies = jiffies; + + lock_kernel(); /* * Set the check interval to be 1/5 of the estimated time to * send a single character, and make it at least 1. The check @@ -1570,6 +1581,7 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout) break; } __set_current_state(TASK_RUNNING); + unlock_kernel(); #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); #endif diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c index 17d54315e14..cdd876dbb2b 100644 --- a/drivers/char/apm-emulation.c +++ b/drivers/char/apm-emulation.c @@ -14,6 +14,7 @@ #include <linux/poll.h> #include <linux/slab.h> #include <linux/proc_fs.h> +#include <linux/seq_file.h> #include <linux/miscdevice.h> #include <linux/apm_bios.h> #include <linux/capability.h> @@ -493,11 +494,10 @@ static struct miscdevice apm_device = { * -1: Unknown * 8) min = minutes; sec = seconds */ -static int apm_get_info(char *buf, char **start, off_t fpos, int length) +static int proc_apm_show(struct seq_file *m, void *v) { struct apm_power_info info; char *units; - int ret; info.ac_line_status = 0xff; info.battery_status = 0xff; @@ -515,14 +515,27 @@ static int apm_get_info(char *buf, char **start, off_t fpos, int length) case 1: units = "sec"; break; } - ret = sprintf(buf, "%s 1.2 0x%02x 0x%02x 0x%02x 0x%02x %d%% %d %s\n", + seq_printf(m, "%s 1.2 0x%02x 0x%02x 0x%02x 0x%02x %d%% %d %s\n", driver_version, APM_32_BIT_SUPPORT, info.ac_line_status, info.battery_status, info.battery_flag, info.battery_life, info.time, units); - return ret; + return 0; } + +static int proc_apm_open(struct inode *inode, struct file *file) +{ + return single_open(file, proc_apm_show, NULL); +} + +static const struct file_operations apm_proc_fops = { + .owner = THIS_MODULE, + .open = proc_apm_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; #endif static int kapmd(void *arg) @@ -593,7 +606,7 @@ static int __init apm_init(void) wake_up_process(kapmd_tsk); #ifdef CONFIG_PROC_FS - create_proc_info_entry("apm", 0, NULL, apm_get_info); + proc_create("apm", 0, NULL, &apm_proc_fops); #endif ret = misc_register(&apm_device); diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c index a7c4990b5b6..31d08b641f5 100644 --- a/drivers/char/applicom.c +++ b/drivers/char/applicom.c @@ -199,7 +199,7 @@ static int __init applicom_init(void) if (pci_enable_device(dev)) return -EIO; - RamIO = ioremap(pci_resource_start(dev, 0), LEN_RAM_IO); + RamIO = ioremap_nocache(pci_resource_start(dev, 0), LEN_RAM_IO); if (!RamIO) { printk(KERN_INFO "ac.o: Failed to ioremap PCI memory " @@ -254,7 +254,7 @@ static int __init applicom_init(void) /* Now try the specified ISA cards */ for (i = 0; i < MAX_ISA_BOARD; i++) { - RamIO = ioremap(mem + (LEN_RAM_IO * i), LEN_RAM_IO); + RamIO = ioremap_nocache(mem + (LEN_RAM_IO * i), LEN_RAM_IO); if (!RamIO) { printk(KERN_INFO "ac.o: Failed to ioremap the ISA card's memory space (slot #%d)\n", i + 1); diff --git a/drivers/char/consolemap.c b/drivers/char/consolemap.c index 6b104e45a32..4246b8e36cb 100644 --- a/drivers/char/consolemap.c +++ b/drivers/char/consolemap.c @@ -277,6 +277,7 @@ u16 inverse_translate(struct vc_data *conp, int glyph, int use_unicode) return p->inverse_translations[m][glyph]; } } +EXPORT_SYMBOL_GPL(inverse_translate); static void update_user_maps(void) { diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index e4f579c3e24..ef73e72daed 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -21,7 +21,6 @@ * * This version supports shared IRQ's (only for PCI boards). * - * $Log: cyclades.c,v $ * Prevent users from opening non-existing Z ports. * * Revision 2.3.2.8 2000/07/06 18:14:16 ivan @@ -62,7 +61,7 @@ * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined; * * Revision 2.3.2.2 1999/10/01 11:27:43 ivan - * Fixed bug in cyz_poll that would make all ports but port 0 + * Fixed bug in cyz_poll that would make all ports but port 0 * unable to transmit/receive data (Cyclades-Z only); * Implemented logic to prevent the RX buffer from being stuck with data * due to a driver / firmware race condition in interrupt op mode @@ -83,25 +82,25 @@ * Revision 2.3.1.1 1999/07/15 16:45:53 ivan * Removed CY_PROC conditional compilation; * Implemented SMP-awareness for the driver; - * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off] + * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off] * functions; * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs * (irq=NN) as parameters (only for ISA boards); - * Fixed bug in set_line_char that would prevent the Cyclades-Z + * Fixed bug in set_line_char that would prevent the Cyclades-Z * ports from being configured at speeds above 115.2Kbps; * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control * switching from working properly; - * The driver now only prints IRQ info for the Cyclades-Z if it's + * The driver now only prints IRQ info for the Cyclades-Z if it's * configured to work in interrupt mode; * * Revision 2.2.2.3 1999/06/28 11:13:29 ivan * Added support for interrupt mode operation for the Z cards; * Removed the driver inactivity control for the Z; - * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when + * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when * the Z firmware is not loaded yet; - * Replaced the "manual" Z Tx flush buffer by a call to a FW command of + * Replaced the "manual" Z Tx flush buffer by a call to a FW command of * same functionality; - * Implemented workaround for IRQ setting loss on the PCI configuration + * Implemented workaround for IRQ setting loss on the PCI configuration * registers after a PCI bridge EEPROM reload (affects PLX9060 only); * * Revision 2.2.2.2 1999/05/14 17:18:15 ivan @@ -112,22 +111,22 @@ * BREAK implementation changed in order to make use of the 'break_ctl' * TTY facility; * Fixed typo in TTY structure field 'driver_name'; - * Included a PCI bridge reset and EEPROM reload in the board + * Included a PCI bridge reset and EEPROM reload in the board * initialization code (for both Y and Z series). * * Revision 2.2.2.1 1999/04/08 16:17:43 ivan - * Fixed a bug in cy_wait_until_sent that was preventing the port to be + * Fixed a bug in cy_wait_until_sent that was preventing the port to be * closed properly after a SIGINT; * Module usage counter scheme revisited; * Added support to the upcoming Y PCI boards (i.e., support to additional * PCI Device ID's). - * + * * Revision 2.2.1.10 1999/01/20 16:14:29 ivan * Removed all unnecessary page-alignement operations in ioremap calls * (ioremap is currently safe for these operations). * * Revision 2.2.1.9 1998/12/30 18:18:30 ivan - * Changed access to PLX PCI bridge registers from I/O to MMIO, in + * Changed access to PLX PCI bridge registers from I/O to MMIO, in * order to make PLX9050-based boards work with certain motherboards. * * Revision 2.2.1.8 1998/11/13 12:46:20 ivan @@ -148,7 +147,7 @@ * Fixed Cyclom-4Yo hardware detection bug. * * Revision 2.2.1.4 1998/08/04 11:02:50 ivan - * /proc/cyclades implementation with great collaboration of + * /proc/cyclades implementation with great collaboration of * Marc Lewis <marc@blarg.net>; * cyy_interrupt was changed to avoid occurrence of kernel oopses * during PPP operation. @@ -157,7 +156,7 @@ * General code review in order to comply with 2.1 kernel standards; * data loss prevention for slow devices revisited (cy_wait_until_sent * was created); - * removed conditional compilation for new/old PCI structure support + * removed conditional compilation for new/old PCI structure support * (now the driver only supports the new PCI structure). * * Revision 2.2.1.1 1998/03/19 16:43:12 ivan @@ -168,7 +167,7 @@ * cleaned up the data loss fix; * fixed XON/XOFF handling once more (Cyclades-Z); * general review of the driver routines; - * introduction of a mechanism to prevent data loss with slow + * introduction of a mechanism to prevent data loss with slow * printers, by forcing a delay before closing the port. * * Revision 2.1.1.2 1998/02/17 16:50:00 ivan @@ -182,12 +181,12 @@ * Code review for the module cleanup routine; * fixed RTS and DTR status report for new CD1400's in get_modem_info; * includes anonymous changes regarding signal_pending. - * + * * Revision 2.1 1997/11/01 17:42:41 ivan * Changes in the driver to support Alpha systems (except 8Zo V_1); * BREAK fix for the Cyclades-Z boards; * driver inactivity control by FW implemented; - * introduction of flag that allows driver to take advantage of + * introduction of flag that allows driver to take advantage of * a special CD1400 feature related to HW flow control; * added support for the CD1400 rev. J (Cyclom-Y boards); * introduction of ioctls to: @@ -196,17 +195,17 @@ * - adjust the polling interval (Cyclades-Z); * * Revision 1.36.4.33 1997/06/27 19:00:00 ivan - * Fixes related to kernel version conditional + * Fixes related to kernel version conditional * compilation. - * + * * Revision 1.36.4.32 1997/06/14 19:30:00 ivan - * Compatibility issues between kernels 2.0.x and + * Compatibility issues between kernels 2.0.x and * 2.1.x (mainly related to clear_bit function). - * + * * Revision 1.36.4.31 1997/06/03 15:30:00 ivan - * Changes to define the memory window according to the + * Changes to define the memory window according to the * board type. - * + * * Revision 1.36.4.30 1997/05/16 15:30:00 daniel * Changes to support new cycladesZ boards. * @@ -624,7 +623,7 @@ #undef CY_PCI_DEBUG /* - * Include section + * Include section */ #include <linux/module.h> #include <linux/errno.h> @@ -649,9 +648,9 @@ #include <linux/firmware.h> #include <asm/system.h> -#include <asm/io.h> +#include <linux/io.h> #include <asm/irq.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/kernel.h> #include <linux/pci.h> @@ -668,10 +667,10 @@ static void cy_send_xchar(struct tty_struct *tty, char ch); ((readl(&((struct RUNTIME_9060 __iomem *) \ ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0) -#define ISZLOADED(card) (((ZO_V1==readl(&((struct RUNTIME_9060 __iomem *) \ +#define ISZLOADED(card) (((ZO_V1 == readl(&((struct RUNTIME_9060 __iomem *) \ ((card).ctl_addr))->mail_box_0)) || \ Z_FPGA_CHECK(card)) && \ - (ZFIRM_ID==readl(&((struct FIRM_ID __iomem *) \ + (ZFIRM_ID == readl(&((struct FIRM_ID __iomem *) \ ((card).base_addr+ID_ADDRESS))->signature))) #ifndef SERIAL_XMIT_SIZE @@ -809,12 +808,12 @@ static char baud_cor3[] = { /* receive threshold */ /* * The Cyclades driver implements HW flow control as any serial driver. - * The cyclades_port structure member rflow and the vector rflow_thr - * allows us to take advantage of a special feature in the CD1400 to avoid - * data loss even when the system interrupt latency is too high. These flags - * are to be used only with very special applications. Setting these flags - * requires the use of a special cable (DTR and RTS reversed). In the new - * CD1400-based boards (rev. 6.00 or later), there is no need for special + * The cyclades_port structure member rflow and the vector rflow_thr + * allows us to take advantage of a special feature in the CD1400 to avoid + * data loss even when the system interrupt latency is too high. These flags + * are to be used only with very special applications. Setting these flags + * requires the use of a special cable (DTR and RTS reversed). In the new + * CD1400-based boards (rev. 6.00 or later), there is no need for special * cables. */ @@ -841,14 +840,22 @@ static int cy_chip_offset[] = { 0x0000, #ifdef CONFIG_PCI static struct pci_device_id cy_pci_dev_id[] __devinitdata = { - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, /* PCI < 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, /* PCI > 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, /* 4Y PCI < 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, /* 4Y PCI > 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, /* 8Y PCI < 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, /* 8Y PCI > 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, /* Z PCI < 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, /* Z PCI > 1Mb */ + /* PCI < 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, + /* PCI > 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, + /* 4Y PCI < 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, + /* 4Y PCI > 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, + /* 8Y PCI < 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, + /* 8Y PCI > 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, + /* Z PCI < 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, + /* Z PCI > 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, { } /* end of table */ }; MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); @@ -905,15 +912,14 @@ static inline int serial_paranoia_check(struct cyclades_port *info, This function is only called from inside spinlock-protected code. */ -static int cyy_issue_cmd(void __iomem * base_addr, u_char cmd, int index) +static int cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index) { unsigned int i; /* Check to see that the previous command has completed */ for (i = 0; i < 100; i++) { - if (readb(base_addr + (CyCCR << index)) == 0) { + if (readb(base_addr + (CyCCR << index)) == 0) break; - } udelay(10L); } /* if the CCR never cleared, the previous command @@ -929,7 +935,7 @@ static int cyy_issue_cmd(void __iomem * base_addr, u_char cmd, int index) #ifdef CONFIG_ISA /* ISA interrupt detection code */ -static unsigned detect_isa_irq(void __iomem * address) +static unsigned detect_isa_irq(void __iomem *address) { int irq; unsigned long irqs, flags; @@ -1038,7 +1044,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, if (info->flags & ASYNC_SAK) do_SAK(tty); } else if (data & CyFRAME) { - tty_insert_flip_char( tty, + tty_insert_flip_char(tty, readb(base_addr + (CyRDSR << index)), TTY_FRAME); info->icount.rx++; @@ -1320,7 +1326,8 @@ static irqreturn_t cyy_interrupt(int irq, void *dev_id) if (unlikely(cinfo == NULL)) { #ifdef CY_DEBUG_INTERRUPTS - printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n",irq); + printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", + irq); #endif return IRQ_NONE; /* spurious interrupt */ } @@ -1375,12 +1382,12 @@ static irqreturn_t cyy_interrupt(int irq, void *dev_id) /***********************************************************/ /********* End of block of Cyclom-Y specific code **********/ -/******** Start of block of Cyclades-Z specific code *********/ +/******** Start of block of Cyclades-Z specific code *******/ /***********************************************************/ static int cyz_fetch_msg(struct cyclades_card *cinfo, - __u32 * channel, __u8 * cmd, __u32 * param) + __u32 *channel, __u8 *cmd, __u32 *param) { struct FIRM_ID __iomem *firm_id; struct ZFW_CTRL __iomem *zfw_ctrl; @@ -1388,9 +1395,8 @@ cyz_fetch_msg(struct cyclades_card *cinfo, unsigned long loc_doorbell; firm_id = cinfo->base_addr + ID_ADDRESS; - if (!ISZLOADED(*cinfo)) { + if (!ISZLOADED(*cinfo)) return -1; - } zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); board_ctrl = &zfw_ctrl->board_ctrl; @@ -1418,9 +1424,9 @@ cyz_issue_cmd(struct cyclades_card *cinfo, unsigned int index; firm_id = cinfo->base_addr + ID_ADDRESS; - if (!ISZLOADED(*cinfo)) { + if (!ISZLOADED(*cinfo)) return -1; - } + zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); board_ctrl = &zfw_ctrl->board_ctrl; @@ -1428,9 +1434,8 @@ cyz_issue_cmd(struct cyclades_card *cinfo, pci_doorbell = &((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->pci_doorbell; while ((readl(pci_doorbell) & 0xff) != 0) { - if (index++ == 1000) { + if (index++ == 1000) return (int)(readl(pci_doorbell) & 0xff); - } udelay(50L); } cy_writel(&board_ctrl->hcmd_channel, channel); @@ -1504,7 +1509,8 @@ static void cyz_handle_rx(struct cyclades_port *info, while (len--) { data = readb(cinfo->base_addr + rx_bufaddr + new_rx_get); - new_rx_get = (new_rx_get + 1)& (rx_bufsize - 1); + new_rx_get = (new_rx_get + 1) & + (rx_bufsize - 1); tty_insert_flip_char(tty, data, TTY_NORMAL); info->idle_stats.recv_bytes++; info->icount.rx++; @@ -1636,7 +1642,8 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo) special_count = 0; delta_count = 0; info = &cinfo->ports[channel]; - if ((tty = info->tty) == NULL) + tty = info->tty; + if (tty == NULL) continue; ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); @@ -1732,7 +1739,8 @@ static irqreturn_t cyz_interrupt(int irq, void *dev_id) if (unlikely(cinfo == NULL)) { #ifdef CY_DEBUG_INTERRUPTS - printk(KERN_DEBUG "cyz_interrupt: spurious interrupt %d\n",irq); + printk(KERN_DEBUG "cyz_interrupt: spurious interrupt %d\n", + irq); #endif return IRQ_NONE; /* spurious interrupt */ } @@ -1851,9 +1859,8 @@ static int startup(struct cyclades_port *info) } if (!info->type) { - if (info->tty) { + if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags); - } free_page(page); goto errout; } @@ -1904,9 +1911,8 @@ static int startup(struct cyclades_port *info) readb(base_addr + (CySRER << index)) | CyRxData); info->flags |= ASYNC_INITIALIZED; - if (info->tty) { + if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags); - } info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; info->breakon = info->breakoff = 0; memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); @@ -1925,9 +1931,8 @@ static int startup(struct cyclades_port *info) base_addr = card->base_addr; firm_id = base_addr + ID_ADDRESS; - if (!ISZLOADED(*card)) { + if (!ISZLOADED(*card)) return -ENODEV; - } zfw_ctrl = card->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); @@ -1990,9 +1995,8 @@ static int startup(struct cyclades_port *info) /* enable send, recv, modem !!! */ info->flags |= ASYNC_INITIALIZED; - if (info->tty) { + if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags); - } info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; info->breakon = info->breakoff = 0; memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); @@ -2061,9 +2065,8 @@ static void shutdown(struct cyclades_port *info) void __iomem *base_addr; int chip, channel, index; - if (!(info->flags & ASYNC_INITIALIZED)) { + if (!(info->flags & ASYNC_INITIALIZED)) return; - } card = info->card; channel = info->line - card->first_line; @@ -2105,9 +2108,8 @@ static void shutdown(struct cyclades_port *info) /* it may be appropriate to clear _XMIT at some later date (after testing)!!! */ - if (info->tty) { + if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags); - } info->flags &= ~ASYNC_INITIALIZED; spin_unlock_irqrestore(&card->card_lock, flags); } else { @@ -2124,9 +2126,8 @@ static void shutdown(struct cyclades_port *info) #endif firm_id = base_addr + ID_ADDRESS; - if (!ISZLOADED(*card)) { + if (!ISZLOADED(*card)) return; - } zfw_ctrl = card->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); @@ -2157,9 +2158,8 @@ static void shutdown(struct cyclades_port *info) #endif } - if (info->tty) { + if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags); - } info->flags &= ~ASYNC_INITIALIZED; spin_unlock_irqrestore(&card->card_lock, flags); @@ -2204,7 +2204,8 @@ block_til_ready(struct tty_struct *tty, struct file *filp, * If non-blocking mode is set, then make the check up front * and then exit. */ - if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { + if ((filp->f_flags & O_NONBLOCK) || + (tty->flags & (1 << TTY_IO_ERROR))) { info->flags |= ASYNC_NORMAL_ACTIVE; return 0; } @@ -2301,7 +2302,8 @@ block_til_ready(struct tty_struct *tty, struct file *filp, return -EINVAL; } - zfw_ctrl = base_addr + (readl(&firm_id->zfwctrl_addr)& 0xfffff); + zfw_ctrl = base_addr + (readl(&firm_id->zfwctrl_addr) + & 0xfffff); board_ctrl = &zfw_ctrl->board_ctrl; ch_ctrl = zfw_ctrl->ch_ctrl; @@ -2378,9 +2380,9 @@ static int cy_open(struct tty_struct *tty, struct file *filp) int retval; line = tty->index; - if ((tty->index < 0) || (NR_PORTS <= line)) { + if (tty->index < 0 || NR_PORTS <= line) return -ENODEV; - } + for (i = 0; i < NR_CARDS; i++) if (line < cy_card[i].first_line + cy_card[i].nports && line >= cy_card[i].first_line) @@ -2388,9 +2390,8 @@ static int cy_open(struct tty_struct *tty, struct file *filp) if (i >= NR_CARDS) return -ENODEV; info = &cy_card[i].ports[line - cy_card[i].first_line]; - if (info->line < 0) { + if (info->line < 0) return -ENODEV; - } /* If the card's firmware hasn't been loaded, treat it as absent from the system. This @@ -2456,9 +2457,9 @@ static int cy_open(struct tty_struct *tty, struct file *filp) #endif tty->driver_data = info; info->tty = tty; - if (serial_paranoia_check(info, tty->name, "cy_open")) { + if (serial_paranoia_check(info, tty->name, "cy_open")) return -ENODEV; - } + #ifdef CY_DEBUG_OPEN printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, info->count); @@ -2482,9 +2483,8 @@ static int cy_open(struct tty_struct *tty, struct file *filp) * Start up serial port */ retval = startup(info); - if (retval) { + if (retval) return retval; - } retval = block_til_ready(tty, filp, info); if (retval) { @@ -2522,6 +2522,7 @@ static void cy_wait_until_sent(struct tty_struct *tty, int timeout) return; /* Just in case.... */ orig_jiffies = jiffies; + lock_kernel(); /* * Set the check interval to be 1/5 of the estimated time to * send a single character, and make it at least 1. The check @@ -2573,11 +2574,47 @@ static void cy_wait_until_sent(struct tty_struct *tty, int timeout) } /* Run one more char cycle */ msleep_interruptible(jiffies_to_msecs(char_time * 5)); + unlock_kernel(); #ifdef CY_DEBUG_WAIT_UNTIL_SENT printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); #endif } +static void cy_flush_buffer(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + struct cyclades_card *card; + int channel, retval; + unsigned long flags; + +#ifdef CY_DEBUG_IO + printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) + return; + + card = info->card; + channel = info->line - card->first_line; + + spin_lock_irqsave(&card->card_lock, flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + spin_unlock_irqrestore(&card->card_lock, flags); + + if (IS_CYC_Z(*card)) { /* If it is a Z card, flush the on-board + buffers as well */ + spin_lock_irqsave(&card->card_lock, flags); + retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); + if (retval != 0) { + printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " + "was %x\n", info->line, retval); + } + spin_unlock_irqrestore(&card->card_lock, flags); + } + tty_wakeup(tty); +} /* cy_flush_buffer */ + + /* * This routine is called when a particular tty device is closed. */ @@ -2591,9 +2628,8 @@ static void cy_close(struct tty_struct *tty, struct file *filp) printk(KERN_DEBUG "cyc:cy_close ttyC%d\n", info->line); #endif - if (!info || serial_paranoia_check(info, tty->name, "cy_close")) { + if (!info || serial_paranoia_check(info, tty->name, "cy_close")) return; - } card = info->card; @@ -2641,9 +2677,9 @@ static void cy_close(struct tty_struct *tty, struct file *filp) */ tty->closing = 1; spin_unlock_irqrestore(&card->card_lock, flags); - if (info->closing_wait != CY_CLOSING_WAIT_NONE) { + if (info->closing_wait != CY_CLOSING_WAIT_NONE) tty_wait_until_sent(tty, info->closing_wait); - } + spin_lock_irqsave(&card->card_lock, flags); if (!IS_CYC_Z(*card)) { @@ -2657,15 +2693,16 @@ static void cy_close(struct tty_struct *tty, struct file *filp) cy_writeb(base_addr + (CySRER << index), readb(base_addr + (CySRER << index)) & ~CyRxData); if (info->flags & ASYNC_INITIALIZED) { - /* Waiting for on-board buffers to be empty before closing - the port */ + /* Waiting for on-board buffers to be empty before + closing the port */ spin_unlock_irqrestore(&card->card_lock, flags); cy_wait_until_sent(tty, info->timeout); spin_lock_irqsave(&card->card_lock, flags); } } else { #ifdef Z_WAKE - /* Waiting for on-board buffers to be empty before closing the port */ + /* Waiting for on-board buffers to be empty before closing + the port */ void __iomem *base_addr = card->base_addr; struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS; struct ZFW_CTRL __iomem *zfw_ctrl = @@ -2689,8 +2726,7 @@ static void cy_close(struct tty_struct *tty, struct file *filp) spin_unlock_irqrestore(&card->card_lock, flags); shutdown(info); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + cy_flush_buffer(tty); tty_ldisc_flush(tty); spin_lock_irqsave(&card->card_lock, flags); @@ -2738,17 +2774,16 @@ static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); #endif - if (serial_paranoia_check(info, tty->name, "cy_write")) { + if (serial_paranoia_check(info, tty->name, "cy_write")) return 0; - } if (!info->xmit_buf) return 0; spin_lock_irqsave(&info->card->card_lock, flags); while (1) { - c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1), - (int)(SERIAL_XMIT_SIZE - info->xmit_head))); + c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); + c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); if (c <= 0) break; @@ -2766,9 +2801,9 @@ static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) info->idle_stats.xmit_bytes += ret; info->idle_stats.xmit_idle = jiffies; - if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { + if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) start_xmit(info); - } + return ret; } /* cy_write */ @@ -2779,7 +2814,7 @@ static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) * done stuffing characters into the driver. If there is no room * in the queue, the character is ignored. */ -static void cy_put_char(struct tty_struct *tty, unsigned char ch) +static int cy_put_char(struct tty_struct *tty, unsigned char ch) { struct cyclades_port *info = tty->driver_data; unsigned long flags; @@ -2789,15 +2824,15 @@ static void cy_put_char(struct tty_struct *tty, unsigned char ch) #endif if (serial_paranoia_check(info, tty->name, "cy_put_char")) - return; + return 0; if (!info->xmit_buf) - return; + return 0; spin_lock_irqsave(&info->card->card_lock, flags); if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { spin_unlock_irqrestore(&info->card->card_lock, flags); - return; + return 0; } info->xmit_buf[info->xmit_head++] = ch; @@ -2806,11 +2841,12 @@ static void cy_put_char(struct tty_struct *tty, unsigned char ch) info->idle_stats.xmit_bytes++; info->idle_stats.xmit_idle = jiffies; spin_unlock_irqrestore(&info->card->card_lock, flags); + return 1; } /* cy_put_char */ /* * This routine is called by the kernel after it has written a - * series of characters to the tty device using put_char(). + * series of characters to the tty device using put_char(). */ static void cy_flush_chars(struct tty_struct *tty) { @@ -2882,6 +2918,7 @@ static int cy_chars_in_buffer(struct tty_struct *tty) int char_count; __u32 tx_put, tx_get, tx_bufsize; + lock_kernel(); firm_id = card->base_addr + ID_ADDRESS; zfw_ctrl = card->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); @@ -2899,6 +2936,7 @@ static int cy_chars_in_buffer(struct tty_struct *tty) printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", info->line, info->xmit_cnt + char_count); #endif + unlock_kernel(); return info->xmit_cnt + char_count; } #endif /* Z_EXT_CHARS_IN_BUFFER */ @@ -2950,12 +2988,12 @@ static void set_line_char(struct cyclades_port *info) int baud, baud_rate = 0; int i; - if (!info->tty || !info->tty->termios) { + if (!info->tty || !info->tty->termios) return; - } - if (info->line == -1) { + + if (info->line == -1) return; - } + cflag = info->tty->termios->c_cflag; iflag = info->tty->termios->c_iflag; @@ -2994,13 +3032,11 @@ static void set_line_char(struct cyclades_port *info) } /* find the baud index */ for (i = 0; i < 20; i++) { - if (baud == baud_table[i]) { + if (baud == baud_table[i]) break; - } } - if (i == 20) { + if (i == 20) i = 19; /* CD1400_MAX_SPEED */ - } if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) { @@ -3059,18 +3095,16 @@ static void set_line_char(struct cyclades_port *info) info->cor1 = Cy_8_BITS; break; } - if (cflag & CSTOPB) { + if (cflag & CSTOPB) info->cor1 |= Cy_2_STOP; - } + if (cflag & PARENB) { - if (cflag & PARODD) { + if (cflag & PARODD) info->cor1 |= CyPARITY_O; - } else { + else info->cor1 |= CyPARITY_E; - } - } else { + } else info->cor1 |= CyPARITY_NONE; - } /* CTS flow control flag */ if (cflag & CRTSCTS) { @@ -3123,7 +3157,8 @@ static void set_line_char(struct cyclades_port *info) cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | CyCOR3ch, index); - cy_writeb(base_addr + (CyCAR << index), (u_char) channel); /* !!! Is this needed? */ + /* !!! Is this needed? */ + cy_writeb(base_addr + (CyCAR << index), (u_char) channel); cy_writeb(base_addr + (CyRTPR << index), (info->default_timeout ? info->default_timeout : 0x02)); /* 10ms rx timeout */ @@ -3191,9 +3226,8 @@ static void set_line_char(struct cyclades_port *info) #endif } - if (info->tty) { + if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags); - } spin_unlock_irqrestore(&card->card_lock, flags); } else { @@ -3206,9 +3240,8 @@ static void set_line_char(struct cyclades_port *info) int retval; firm_id = card->base_addr + ID_ADDRESS; - if (!ISZLOADED(*card)) { + if (!ISZLOADED(*card)) return; - } zfw_ctrl = card->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); @@ -3268,14 +3301,12 @@ static void set_line_char(struct cyclades_port *info) readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); } if (cflag & PARENB) { - if (cflag & PARODD) { + if (cflag & PARODD) cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); - } else { + else cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); - } - } else { + } else cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); - } /* CTS flow control flag */ if (cflag & CRTSCTS) { @@ -3305,11 +3336,10 @@ static void set_line_char(struct cyclades_port *info) } /* CD sensitivity */ - if (cflag & CLOCAL) { + if (cflag & CLOCAL) info->flags &= ~ASYNC_CHECK_CD; - } else { + else info->flags |= ASYNC_CHECK_CD; - } if (baud == 0) { /* baud rate is zero, turn off line */ cy_writel(&ch_ctrl->rs_control, @@ -3325,21 +3355,20 @@ static void set_line_char(struct cyclades_port *info) #endif } - retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM,0L); + retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); if (retval != 0) { printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " "was %x\n", info->line, retval); } - if (info->tty) { + if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags); - } } } /* set_line_char */ static int get_serial_info(struct cyclades_port *info, - struct serial_struct __user * retinfo) + struct serial_struct __user *retinfo) { struct serial_struct tmp; struct cyclades_card *cinfo = info->card; @@ -3363,7 +3392,7 @@ get_serial_info(struct cyclades_port *info, static int set_serial_info(struct cyclades_port *info, - struct serial_struct __user * new_info) + struct serial_struct __user *new_info) { struct serial_struct new_serial; struct cyclades_port old_info; @@ -3417,7 +3446,7 @@ check_and_exit: * transmit holding register is empty. This functionality * allows an RS485 driver to be written in user space. */ -static int get_lsr_info(struct cyclades_port *info, unsigned int __user * value) +static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) { struct cyclades_card *card; int chip, channel, index; @@ -3461,9 +3490,11 @@ static int cy_tiocmget(struct tty_struct *tty, struct file *file) struct BOARD_CTRL __iomem *board_ctrl; struct CH_CTRL __iomem *ch_ctrl; - if (serial_paranoia_check(info, tty->name, __FUNCTION__)) + if (serial_paranoia_check(info, tty->name, __func__)) return -ENODEV; + lock_kernel(); + card = info->card; channel = info->line - card->first_line; if (!IS_CYC_Z(*card)) { @@ -3506,10 +3537,12 @@ static int cy_tiocmget(struct tty_struct *tty, struct file *file) ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); } else { result = 0; + unlock_kernel(); return -ENODEV; } } + unlock_kernel(); return result; } /* cy_tiomget */ @@ -3528,7 +3561,7 @@ cy_tiocmset(struct tty_struct *tty, struct file *file, struct CH_CTRL __iomem *ch_ctrl; int retval; - if (serial_paranoia_check(info, tty->name, __FUNCTION__)) + if (serial_paranoia_check(info, tty->name, __func__)) return -ENODEV; card = info->card; @@ -3727,8 +3760,8 @@ static void cy_break(struct tty_struct *tty, int break_state) spin_unlock_irqrestore(&card->card_lock, flags); } /* cy_break */ -static int -get_mon_info(struct cyclades_port *info, struct cyclades_monitor __user * mon) +static int get_mon_info(struct cyclades_port *info, + struct cyclades_monitor __user *mon) { if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) @@ -3767,8 +3800,8 @@ static int set_threshold(struct cyclades_port *info, unsigned long value) return 0; } /* set_threshold */ -static int -get_threshold(struct cyclades_port *info, unsigned long __user * value) +static int get_threshold(struct cyclades_port *info, + unsigned long __user *value) { struct cyclades_card *card; void __iomem *base_addr; @@ -3789,15 +3822,15 @@ get_threshold(struct cyclades_port *info, unsigned long __user * value) return 0; } /* get_threshold */ -static int -set_default_threshold(struct cyclades_port *info, unsigned long value) +static int set_default_threshold(struct cyclades_port *info, + unsigned long value) { info->default_threshold = value & 0x0f; return 0; } /* set_default_threshold */ -static int -get_default_threshold(struct cyclades_port *info, unsigned long __user * value) +static int get_default_threshold(struct cyclades_port *info, + unsigned long __user *value) { return put_user(info->default_threshold, value); } /* get_default_threshold */ @@ -3824,7 +3857,8 @@ static int set_timeout(struct cyclades_port *info, unsigned long value) return 0; } /* set_timeout */ -static int get_timeout(struct cyclades_port *info, unsigned long __user * value) +static int get_timeout(struct cyclades_port *info, + unsigned long __user *value) { struct cyclades_card *card; void __iomem *base_addr; @@ -3851,8 +3885,8 @@ static int set_default_timeout(struct cyclades_port *info, unsigned long value) return 0; } /* set_default_timeout */ -static int -get_default_timeout(struct cyclades_port *info, unsigned long __user * value) +static int get_default_timeout(struct cyclades_port *info, + unsigned long __user *value) { return put_user(info->default_timeout, value); } /* get_default_timeout */ @@ -3880,6 +3914,7 @@ cy_ioctl(struct tty_struct *tty, struct file *file, printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", info->line, cmd, arg); #endif + lock_kernel(); switch (cmd) { case CYGETMON: @@ -3936,7 +3971,7 @@ cy_ioctl(struct tty_struct *tty, struct file *file, break; #endif /* CONFIG_CYZ_INTR */ case CYSETWAIT: - info->closing_wait = (unsigned short)arg *HZ / 100; + info->closing_wait = (unsigned short)arg * HZ / 100; ret_val = 0; break; case CYGETWAIT: @@ -3988,47 +4023,47 @@ cy_ioctl(struct tty_struct *tty, struct file *file, p_cuser = argp; ret_val = put_user(cnow.cts, &p_cuser->cts); if (ret_val) - return ret_val; + break; ret_val = put_user(cnow.dsr, &p_cuser->dsr); if (ret_val) - return ret_val; + break; ret_val = put_user(cnow.rng, &p_cuser->rng); if (ret_val) - return ret_val; + break; ret_val = put_user(cnow.dcd, &p_cuser->dcd); if (ret_val) - return ret_val; + break; ret_val = put_user(cnow.rx, &p_cuser->rx); if (ret_val) - return ret_val; + break; ret_val = put_user(cnow.tx, &p_cuser->tx); if (ret_val) - return ret_val; + break; ret_val = put_user(cnow.frame, &p_cuser->frame); if (ret_val) - return ret_val; + break; ret_val = put_user(cnow.overrun, &p_cuser->overrun); if (ret_val) - return ret_val; + break; ret_val = put_user(cnow.parity, &p_cuser->parity); if (ret_val) - return ret_val; + break; ret_val = put_user(cnow.brk, &p_cuser->brk); if (ret_val) - return ret_val; + break; ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); if (ret_val) - return ret_val; + break; ret_val = 0; break; default: ret_val = -ENOIOCTLCMD; } + unlock_kernel(); #ifdef CY_DEBUG_OTHER printk(KERN_DEBUG "cyc:cy_ioctl done\n"); #endif - return ret_val; } /* cy_ioctl */ @@ -4113,9 +4148,8 @@ static void cy_throttle(struct tty_struct *tty) tty->ldisc.chars_in_buffer(tty), info->line); #endif - if (serial_paranoia_check(info, tty->name, "cy_throttle")) { + if (serial_paranoia_check(info, tty->name, "cy_throttle")) return; - } card = info->card; @@ -4169,12 +4203,11 @@ static void cy_unthrottle(struct tty_struct *tty) char buf[64]; printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", - tty_name(tty, buf), tty->ldisc.chars_in_buffer(tty),info->line); + tty_name(tty, buf), tty_chars_in_buffer(tty), info->line); #endif - if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) { + if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) return; - } if (I_IXOFF(tty)) { if (info->x_char) @@ -4269,47 +4302,14 @@ static void cy_start(struct tty_struct *tty) base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); spin_lock_irqsave(&cinfo->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), (u_char) (channel & 0x0003)); /* index channel */ + cy_writeb(base_addr + (CyCAR << index), + (u_char) (channel & 0x0003)); /* index channel */ cy_writeb(base_addr + (CySRER << index), readb(base_addr + (CySRER << index)) | CyTxRdy); spin_unlock_irqrestore(&cinfo->card_lock, flags); } } /* cy_start */ -static void cy_flush_buffer(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - struct cyclades_card *card; - int channel, retval; - unsigned long flags; - -#ifdef CY_DEBUG_IO - printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) - return; - - card = info->card; - channel = info->line - card->first_line; - - spin_lock_irqsave(&card->card_lock, flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - spin_unlock_irqrestore(&card->card_lock, flags); - - if (IS_CYC_Z(*card)) { /* If it is a Z card, flush the on-board - buffers as well */ - spin_lock_irqsave(&card->card_lock, flags); - retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " - "was %x\n", info->line, retval); - } - spin_unlock_irqrestore(&card->card_lock, flags); - } - tty_wakeup(tty); -} /* cy_flush_buffer */ - /* * cy_hangup() --- called by tty_hangup() when a hangup is signaled. */ @@ -4406,10 +4406,11 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo) info->cor3 = 0x08; /* _very_ small rcv threshold */ chip_number = (port - cinfo->first_line) / 4; - if ((info->chip_rev = readb(cinfo->base_addr + - (cy_chip_offset[chip_number] << - index) + (CyGFRCR << index))) >= - CD1400_REV_J) { + info->chip_rev = readb(cinfo->base_addr + + (cy_chip_offset[chip_number] << index) + + (CyGFRCR << index)); + + if (info->chip_rev >= CD1400_REV_J) { /* It is a CD1400 rev. J or later */ info->tbpr = baud_bpr_60[13]; /* Tx BPR */ info->tco = baud_co_60[13]; /* Tx CO */ @@ -4454,7 +4455,8 @@ static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, /* Cy_ClrIntr is 0x1800 */ udelay(500L); - for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; chip_number++) { + for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; + chip_number++) { base_addr = true_base_addr + (cy_chip_offset[chip_number] << index); mdelay(1); @@ -4555,12 +4557,11 @@ static int __init cy_detect_isa(void) /* scan the address table probing for Cyclom-Y/ISA boards */ for (i = 0; i < NR_ISA_ADDRS; i++) { unsigned int isa_address = cy_isa_addresses[i]; - if (isa_address == 0x0000) { + if (isa_address == 0x0000) return nboard; - } /* probe for CD1400... */ - cy_isa_address = ioremap(isa_address, CyISA_Ywin); + cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); if (cy_isa_address == NULL) { printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " "address\n"); @@ -4847,12 +4848,10 @@ static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, if (mailbox != 0) { /* set window to last 512K of RAM */ cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); - //sleep(1); for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) cy_writeb(tmp, 255); /* set window to beginning of RAM */ cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); - //sleep(1); } retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); @@ -5382,7 +5381,8 @@ static void __exit cy_cleanup_module(void) del_timer_sync(&cyz_timerlist); #endif /* CONFIG_CYZ_INTR */ - if ((e1 = tty_unregister_driver(cy_serial_driver))) + e1 = tty_unregister_driver(cy_serial_driver); + if (e1) printk(KERN_ERR "failed to unregister Cyclades serial " "driver(%d)\n", e1); diff --git a/drivers/char/drm/drmP.h b/drivers/char/drm/drmP.h index ecee3547a13..213b3ca3468 100644 --- a/drivers/char/drm/drmP.h +++ b/drivers/char/drm/drmP.h @@ -160,7 +160,7 @@ struct drm_device; * \param arg arguments */ #define DRM_ERROR(fmt, arg...) \ - printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __FUNCTION__ , ##arg) + printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg) /** * Memory error output. @@ -170,7 +170,7 @@ struct drm_device; * \param arg arguments */ #define DRM_MEM_ERROR(area, fmt, arg...) \ - printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __FUNCTION__, \ + printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \ drm_mem_stats[area].name , ##arg) #define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg) @@ -187,7 +187,7 @@ struct drm_device; if ( drm_debug ) \ printk(KERN_DEBUG \ "[" DRM_NAME ":%s] " fmt , \ - __FUNCTION__ , ##arg); \ + __func__ , ##arg); \ } while (0) #else #define DRM_DEBUG(fmt, arg...) do { } while (0) @@ -238,7 +238,7 @@ do { \ if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) || \ dev->lock.file_priv != file_priv ) { \ DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\ - __FUNCTION__, _DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ),\ + __func__, _DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ),\ dev->lock.file_priv, file_priv ); \ return -EINVAL; \ } \ diff --git a/drivers/char/drm/drm_sysfs.c b/drivers/char/drm/drm_sysfs.c index 7a1d9a782dd..9a32169e88f 100644 --- a/drivers/char/drm/drm_sysfs.c +++ b/drivers/char/drm/drm_sysfs.c @@ -34,7 +34,7 @@ static int drm_sysfs_suspend(struct device *dev, pm_message_t state) struct drm_minor *drm_minor = to_drm_minor(dev); struct drm_device *drm_dev = drm_minor->dev; - printk(KERN_ERR "%s\n", __FUNCTION__); + printk(KERN_ERR "%s\n", __func__); if (drm_dev->driver->suspend) return drm_dev->driver->suspend(drm_dev, state); diff --git a/drivers/char/drm/i830_dma.c b/drivers/char/drm/i830_dma.c index 60c9376be48..a86ab30b462 100644 --- a/drivers/char/drm/i830_dma.c +++ b/drivers/char/drm/i830_dma.c @@ -692,7 +692,7 @@ static void i830EmitState(struct drm_device * dev) drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv; unsigned int dirty = sarea_priv->dirty; - DRM_DEBUG("%s %x\n", __FUNCTION__, dirty); + DRM_DEBUG("%s %x\n", __func__, dirty); if (dirty & I830_UPLOAD_BUFFERS) { i830EmitDestVerified(dev, sarea_priv->BufferState); @@ -1043,7 +1043,7 @@ static void i830_dma_dispatch_flip(struct drm_device * dev) RING_LOCALS; DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n", - __FUNCTION__, + __func__, dev_priv->current_page, dev_priv->sarea_priv->pf_current_page); @@ -1206,7 +1206,7 @@ static void i830_dma_quiescent(struct drm_device * dev) OUT_RING(0); ADVANCE_LP_RING(); - i830_wait_ring(dev, dev_priv->ring.Size - 8, __FUNCTION__); + i830_wait_ring(dev, dev_priv->ring.Size - 8, __func__); } static int i830_flush_queue(struct drm_device * dev) @@ -1223,7 +1223,7 @@ static int i830_flush_queue(struct drm_device * dev) OUT_RING(0); ADVANCE_LP_RING(); - i830_wait_ring(dev, dev_priv->ring.Size - 8, __FUNCTION__); + i830_wait_ring(dev, dev_priv->ring.Size - 8, __func__); for (i = 0; i < dma->buf_count; i++) { struct drm_buf *buf = dma->buflist[i]; @@ -1344,7 +1344,7 @@ static void i830_do_init_pageflip(struct drm_device * dev) { drm_i830_private_t *dev_priv = dev->dev_private; - DRM_DEBUG("%s\n", __FUNCTION__); + DRM_DEBUG("%s\n", __func__); dev_priv->page_flipping = 1; dev_priv->current_page = 0; dev_priv->sarea_priv->pf_current_page = dev_priv->current_page; @@ -1354,7 +1354,7 @@ static int i830_do_cleanup_pageflip(struct drm_device * dev) { drm_i830_private_t *dev_priv = dev->dev_private; - DRM_DEBUG("%s\n", __FUNCTION__); + DRM_DEBUG("%s\n", __func__); if (dev_priv->current_page != 0) i830_dma_dispatch_flip(dev); @@ -1367,7 +1367,7 @@ static int i830_flip_bufs(struct drm_device *dev, void *data, { drm_i830_private_t *dev_priv = dev->dev_private; - DRM_DEBUG("%s\n", __FUNCTION__); + DRM_DEBUG("%s\n", __func__); LOCK_TEST_WITH_RETURN(dev, file_priv); @@ -1437,7 +1437,7 @@ static int i830_getparam(struct drm_device *dev, void *data, int value; if (!dev_priv) { - DRM_ERROR("%s called with no initialization\n", __FUNCTION__); + DRM_ERROR("%s called with no initialization\n", __func__); return -EINVAL; } @@ -1464,7 +1464,7 @@ static int i830_setparam(struct drm_device *dev, void *data, drm_i830_setparam_t *param = data; if (!dev_priv) { - DRM_ERROR("%s called with no initialization\n", __FUNCTION__); + DRM_ERROR("%s called with no initialization\n", __func__); return -EINVAL; } diff --git a/drivers/char/drm/i830_drv.h b/drivers/char/drm/i830_drv.h index 4caba8c5445..b5bf8cc0fda 100644 --- a/drivers/char/drm/i830_drv.h +++ b/drivers/char/drm/i830_drv.h @@ -158,7 +158,7 @@ extern int i830_driver_device_is_agp(struct drm_device * dev); if (I830_VERBOSE) \ printk("BEGIN_LP_RING(%d)\n", (n)); \ if (dev_priv->ring.space < n*4) \ - i830_wait_ring(dev, n*4, __FUNCTION__); \ + i830_wait_ring(dev, n*4, __func__); \ outcount = 0; \ outring = dev_priv->ring.tail; \ ringmask = dev_priv->ring.tail_mask; \ diff --git a/drivers/char/drm/i830_irq.c b/drivers/char/drm/i830_irq.c index a33db5f0967..91ec2bb497e 100644 --- a/drivers/char/drm/i830_irq.c +++ b/drivers/char/drm/i830_irq.c @@ -58,7 +58,7 @@ static int i830_emit_irq(struct drm_device * dev) drm_i830_private_t *dev_priv = dev->dev_private; RING_LOCALS; - DRM_DEBUG("%s\n", __FUNCTION__); + DRM_DEBUG("%s\n", __func__); atomic_inc(&dev_priv->irq_emitted); @@ -77,7 +77,7 @@ static int i830_wait_irq(struct drm_device * dev, int irq_nr) unsigned long end = jiffies + HZ * 3; int ret = 0; - DRM_DEBUG("%s\n", __FUNCTION__); + DRM_DEBUG("%s\n", __func__); if (atomic_read(&dev_priv->irq_received) >= irq_nr) return 0; @@ -124,7 +124,7 @@ int i830_irq_emit(struct drm_device *dev, void *data, LOCK_TEST_WITH_RETURN(dev, file_priv); if (!dev_priv) { - DRM_ERROR("%s called with no initialization\n", __FUNCTION__); + DRM_ERROR("%s called with no initialization\n", __func__); return -EINVAL; } @@ -147,7 +147,7 @@ int i830_irq_wait(struct drm_device *dev, void *data, drm_i830_irq_wait_t *irqwait = data; if (!dev_priv) { - DRM_ERROR("%s called with no initialization\n", __FUNCTION__); + DRM_ERROR("%s called with no initialization\n", __func__); return -EINVAL; } diff --git a/drivers/char/drm/i915_dma.c b/drivers/char/drm/i915_dma.c index ef7bf143a80..f47e46e3529 100644 --- a/drivers/char/drm/i915_dma.c +++ b/drivers/char/drm/i915_dma.c @@ -194,7 +194,7 @@ static int i915_dma_resume(struct drm_device * dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - DRM_DEBUG("%s\n", __FUNCTION__); + DRM_DEBUG("%s\n", __func__); if (!dev_priv->sarea) { DRM_ERROR("can not find sarea!\n"); @@ -609,7 +609,7 @@ static int i915_quiescent(struct drm_device * dev) drm_i915_private_t *dev_priv = dev->dev_private; i915_kernel_lost_context(dev); - return i915_wait_ring(dev, dev_priv->ring.Size - 8, __FUNCTION__); + return i915_wait_ring(dev, dev_priv->ring.Size - 8, __func__); } static int i915_flush_ioctl(struct drm_device *dev, void *data, diff --git a/drivers/char/drm/i915_drv.h b/drivers/char/drm/i915_drv.h index c614d78b3df..db7001f2256 100644 --- a/drivers/char/drm/i915_drv.h +++ b/drivers/char/drm/i915_drv.h @@ -272,7 +272,7 @@ extern void i915_mem_release(struct drm_device * dev, if (I915_VERBOSE) \ DRM_DEBUG("BEGIN_LP_RING(%d)\n", (n)); \ if (dev_priv->ring.space < (n)*4) \ - i915_wait_ring(dev, (n)*4, __FUNCTION__); \ + i915_wait_ring(dev, (n)*4, __func__); \ outcount = 0; \ outring = dev_priv->ring.tail; \ ringmask = dev_priv->ring.tail_mask; \ diff --git a/drivers/char/drm/radeon_cp.c b/drivers/char/drm/radeon_cp.c index 9072e4a1894..f6f6c92bf77 100644 --- a/drivers/char/drm/radeon_cp.c +++ b/drivers/char/drm/radeon_cp.c @@ -894,7 +894,7 @@ static u32 RADEON_READ_IGPGART(drm_radeon_private_t *dev_priv, int addr) #if RADEON_FIFO_DEBUG static void radeon_status(drm_radeon_private_t * dev_priv) { - printk("%s:\n", __FUNCTION__); + printk("%s:\n", __func__); printk("RBBM_STATUS = 0x%08x\n", (unsigned int)RADEON_READ(RADEON_RBBM_STATUS)); printk("CP_RB_RTPR = 0x%08x\n", diff --git a/drivers/char/ds1286.c b/drivers/char/ds1286.c index 59146e3365b..ea35ab2c990 100644 --- a/drivers/char/ds1286.c +++ b/drivers/char/ds1286.c @@ -39,6 +39,7 @@ #include <linux/spinlock.h> #include <linux/bcd.h> #include <linux/proc_fs.h> +#include <linux/jiffies.h> #include <asm/uaccess.h> #include <asm/system.h> @@ -451,7 +452,7 @@ static void ds1286_get_time(struct rtc_time *rtc_tm) */ if (ds1286_is_updating() != 0) - while (jiffies - uip_watchdog < 2*HZ/100) + while (time_before(jiffies, uip_watchdog + 2*HZ/100)) barrier(); /* diff --git a/drivers/char/epca.c b/drivers/char/epca.c index ffd747c5dff..60a4df7dac1 100644 --- a/drivers/char/epca.c +++ b/drivers/char/epca.c @@ -38,8 +38,8 @@ #include <linux/slab.h> #include <linux/ioport.h> #include <linux/interrupt.h> -#include <asm/uaccess.h> -#include <asm/io.h> +#include <linux/uaccess.h> +#include <linux/io.h> #include <linux/spinlock.h> #include <linux/pci.h> #include "digiPCI.h" @@ -73,7 +73,8 @@ static int invalid_lilo_config; */ static DEFINE_SPINLOCK(epca_lock); -/* MAXBOARDS is typically 12, but ISA and EISA cards are restricted to 7 below. */ +/* MAXBOARDS is typically 12, but ISA and EISA cards are restricted + to 7 below. */ static struct board_info boards[MAXBOARDS]; static struct tty_driver *pc_driver; @@ -157,13 +158,12 @@ static void epca_error(int, char *); static void pc_close(struct tty_struct *, struct file *); static void shutdown(struct channel *); static void pc_hangup(struct tty_struct *); -static void pc_put_char(struct tty_struct *, unsigned char); static int pc_write_room(struct tty_struct *); static int pc_chars_in_buffer(struct tty_struct *); static void pc_flush_buffer(struct tty_struct *); static void pc_flush_chars(struct tty_struct *); static int block_til_ready(struct tty_struct *, struct file *, - struct channel *); + struct channel *); static int pc_open(struct tty_struct *, struct file *); static void post_fep_init(unsigned int crd); static void epcapoll(unsigned long); @@ -175,18 +175,18 @@ static unsigned termios2digi_c(struct channel *ch, unsigned); static void epcaparam(struct tty_struct *, struct channel *); static void receive_data(struct channel *); static int pc_ioctl(struct tty_struct *, struct file *, - unsigned int, unsigned long); + unsigned int, unsigned long); static int info_ioctl(struct tty_struct *, struct file *, - unsigned int, unsigned long); + unsigned int, unsigned long); static void pc_set_termios(struct tty_struct *, struct ktermios *); static void do_softint(struct work_struct *work); static void pc_stop(struct tty_struct *); static void pc_start(struct tty_struct *); -static void pc_throttle(struct tty_struct * tty); +static void pc_throttle(struct tty_struct *tty); static void pc_unthrottle(struct tty_struct *tty); static void digi_send_break(struct channel *ch, int msec); static void setup_empty_event(struct tty_struct *tty, struct channel *ch); -void epca_setup(char *, int *); +static void epca_setup(char *, int *); static int pc_write(struct tty_struct *, const unsigned char *, int); static int pc_init(void); @@ -243,7 +243,7 @@ static void assertmemoff(struct channel *ch) /* PCXEM windowing is the same as that used in the PCXR and CX series cards. */ static void pcxem_memwinon(struct board_info *b, unsigned int win) { - outb_p(FEPWIN|win, b->port + 1); + outb_p(FEPWIN | win, b->port + 1); } static void pcxem_memwinoff(struct board_info *b, unsigned int win) @@ -253,7 +253,7 @@ static void pcxem_memwinoff(struct board_info *b, unsigned int win) static void pcxem_globalwinon(struct channel *ch) { - outb_p( FEPWIN, (int)ch->board->port + 1); + outb_p(FEPWIN, (int)ch->board->port + 1); } static void pcxem_rxwinon(struct channel *ch) @@ -394,7 +394,7 @@ static struct channel *verifyChannel(struct tty_struct *tty) */ if (tty) { struct channel *ch = (struct channel *)tty->driver_data; - if ((ch >= &digi_channels[0]) && (ch < &digi_channels[nbdevs])) { + if (ch >= &digi_channels[0] && ch < &digi_channels[nbdevs]) { if (ch->magic == EPCA_MAGIC) return ch; } @@ -414,7 +414,7 @@ static void pc_sched_event(struct channel *ch, int event) static void epca_error(int line, char *msg) { - printk(KERN_ERR "epca_error (Digi): line = %d %s\n",line,msg); + printk(KERN_ERR "epca_error (Digi): line = %d %s\n", line, msg); } static void pc_close(struct tty_struct *tty, struct file *filp) @@ -425,7 +425,8 @@ static void pc_close(struct tty_struct *tty, struct file *filp) * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) != NULL) { + ch = verifyChannel(tty); + if (ch != NULL) { spin_lock_irqsave(&epca_lock, flags); if (tty_hung_up_p(filp)) { spin_unlock_irqrestore(&epca_lock, flags); @@ -440,7 +441,6 @@ static void pc_close(struct tty_struct *tty, struct file *filp) spin_unlock_irqrestore(&epca_lock, flags); return; } - /* Port open only once go ahead with shutdown & reset */ BUG_ON(ch->count < 0); @@ -455,12 +455,13 @@ static void pc_close(struct tty_struct *tty, struct file *filp) spin_unlock_irqrestore(&epca_lock, flags); if (ch->asyncflags & ASYNC_INITIALIZED) { - /* Setup an event to indicate when the transmit buffer empties */ + /* Setup an event to indicate when the + transmit buffer empties */ setup_empty_event(tty, ch); - tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */ + /* 30 seconds timeout */ + tty_wait_until_sent(tty, 3000); } - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + pc_flush_buffer(tty); tty_ldisc_flush(tty); shutdown(ch); @@ -477,7 +478,7 @@ static void pc_close(struct tty_struct *tty, struct file *filp) wake_up_interruptible(&ch->open_wait); } ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED | - ASYNC_CLOSING); + ASYNC_CLOSING); wake_up_interruptible(&ch->close_wait); } } @@ -524,16 +525,15 @@ static void shutdown(struct channel *ch) static void pc_hangup(struct tty_struct *tty) { struct channel *ch; - /* * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) != NULL) { + ch = verifyChannel(tty); + if (ch != NULL) { unsigned long flags; - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + pc_flush_buffer(tty); tty_ldisc_flush(tty); shutdown(ch); @@ -548,7 +548,7 @@ static void pc_hangup(struct tty_struct *tty) } static int pc_write(struct tty_struct *tty, - const unsigned char *buf, int bytesAvailable) + const unsigned char *buf, int bytesAvailable) { unsigned int head, tail; int dataLen; @@ -572,7 +572,8 @@ static int pc_write(struct tty_struct *tty, * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) == NULL) + ch = verifyChannel(tty); + if (ch == NULL) return 0; /* Make a pointer to the channel data structure found on the board. */ @@ -645,26 +646,19 @@ static int pc_write(struct tty_struct *tty, return amountCopied; } -static void pc_put_char(struct tty_struct *tty, unsigned char c) -{ - pc_write(tty, &c, 1); -} - static int pc_write_room(struct tty_struct *tty) { - int remain; + int remain = 0; struct channel *ch; unsigned long flags; unsigned int head, tail; struct board_chan __iomem *bc; - - remain = 0; - /* * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) != NULL) { + ch = verifyChannel(tty); + if (ch != NULL) { spin_lock_irqsave(&epca_lock, flags); globalwinon(ch); @@ -676,8 +670,8 @@ static int pc_write_room(struct tty_struct *tty) tail = readw(&bc->tout); /* Wrap tail if necessary */ tail &= (ch->txbufsize - 1); - - if ((remain = tail - head - 1) < 0 ) + remain = tail - head - 1; + if (remain < 0) remain += ch->txbufsize; if (remain && (ch->statusflags & LOWWAIT) == 0) { @@ -699,12 +693,12 @@ static int pc_chars_in_buffer(struct tty_struct *tty) unsigned long flags; struct channel *ch; struct board_chan __iomem *bc; - /* * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) == NULL) + ch = verifyChannel(tty); + if (ch == NULL) return 0; spin_lock_irqsave(&epca_lock, flags); @@ -715,7 +709,8 @@ static int pc_chars_in_buffer(struct tty_struct *tty) head = readw(&bc->tin); ctail = readw(&ch->mailbox->cout); - if (tail == head && readw(&ch->mailbox->cin) == ctail && readb(&bc->tbusy) == 0) + if (tail == head && readw(&ch->mailbox->cin) == ctail && + readb(&bc->tbusy) == 0) chars = 0; else { /* Begin if some space on the card has been used */ head = readw(&bc->tin) & (ch->txbufsize - 1); @@ -725,7 +720,8 @@ static int pc_chars_in_buffer(struct tty_struct *tty) * pc_write_room here we are finding the amount of bytes in the * buffer filled. Not the amount of bytes empty. */ - if ((remain = tail - head - 1) < 0 ) + remain = tail - head - 1; + if (remain < 0) remain += ch->txbufsize; chars = (int)(ch->txbufsize - remain); /* @@ -736,7 +732,7 @@ static int pc_chars_in_buffer(struct tty_struct *tty) * transmit buffer empties. */ if (!(ch->statusflags & EMPTYWAIT)) - setup_empty_event(tty,ch); + setup_empty_event(tty, ch); } /* End if some space on the card has been used */ memoff(ch); spin_unlock_irqrestore(&epca_lock, flags); @@ -754,7 +750,8 @@ static void pc_flush_buffer(struct tty_struct *tty) * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) == NULL) + ch = verifyChannel(tty); + if (ch == NULL) return; spin_lock_irqsave(&epca_lock, flags); @@ -775,23 +772,25 @@ static void pc_flush_chars(struct tty_struct *tty) * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) != NULL) { + ch = verifyChannel(tty); + if (ch != NULL) { unsigned long flags; spin_lock_irqsave(&epca_lock, flags); /* * If not already set and the transmitter is busy setup an * event to indicate when the transmit empties. */ - if ((ch->statusflags & TXBUSY) && !(ch->statusflags & EMPTYWAIT)) - setup_empty_event(tty,ch); + if ((ch->statusflags & TXBUSY) && + !(ch->statusflags & EMPTYWAIT)) + setup_empty_event(tty, ch); spin_unlock_irqrestore(&epca_lock, flags); } } static int block_til_ready(struct tty_struct *tty, - struct file *filp, struct channel *ch) + struct file *filp, struct channel *ch) { - DECLARE_WAITQUEUE(wait,current); + DECLARE_WAITQUEUE(wait, current); int retval, do_clocal = 0; unsigned long flags; @@ -839,8 +838,7 @@ static int block_til_ready(struct tty_struct *tty, while (1) { set_current_state(TASK_INTERRUPTIBLE); if (tty_hung_up_p(filp) || - !(ch->asyncflags & ASYNC_INITIALIZED)) - { + !(ch->asyncflags & ASYNC_INITIALIZED)) { if (ch->asyncflags & ASYNC_HUP_NOTIFY) retval = -EAGAIN; else @@ -880,7 +878,7 @@ static int block_til_ready(struct tty_struct *tty, return 0; } -static int pc_open(struct tty_struct *tty, struct file * filp) +static int pc_open(struct tty_struct *tty, struct file *filp) { struct channel *ch; unsigned long flags; @@ -923,7 +921,8 @@ static int pc_open(struct tty_struct *tty, struct file * filp) return(-ENODEV); } - if ((bc = ch->brdchan) == 0) { + bc = ch->brdchan; + if (bc == NULL) { tty->driver_data = NULL; return -ENODEV; } @@ -964,7 +963,7 @@ static int pc_open(struct tty_struct *tty, struct file * filp) * The below routine generally sets up parity, baud, flow control * issues, etc.... It effect both control flags and input flags. */ - epcaparam(tty,ch); + epcaparam(tty, ch); ch->asyncflags |= ASYNC_INITIALIZED; memoff(ch); spin_unlock_irqrestore(&epca_lock, flags); @@ -1002,8 +1001,8 @@ static void __exit epca_module_exit(void) del_timer_sync(&epca_timer); - if (tty_unregister_driver(pc_driver) || tty_unregister_driver(pc_info)) - { + if (tty_unregister_driver(pc_driver) || + tty_unregister_driver(pc_info)) { printk(KERN_WARNING "epca: cleanup_module failed to un-register tty driver\n"); return; } @@ -1034,7 +1033,6 @@ static const struct tty_operations pc_ops = { .flush_buffer = pc_flush_buffer, .chars_in_buffer = pc_chars_in_buffer, .flush_chars = pc_flush_chars, - .put_char = pc_put_char, .ioctl = pc_ioctl, .set_termios = pc_set_termios, .stop = pc_stop, @@ -1044,7 +1042,7 @@ static const struct tty_operations pc_ops = { .hangup = pc_hangup, }; -static int info_open(struct tty_struct *tty, struct file * filp) +static int info_open(struct tty_struct *tty, struct file *filp) { return 0; } @@ -1099,7 +1097,7 @@ static int __init pc_init(void) * Set up interrupt, we will worry about memory allocation in * post_fep_init. */ - printk(KERN_INFO "DIGI epca driver version %s loaded.\n",VERSION); + printk(KERN_INFO "DIGI epca driver version %s loaded.\n", VERSION); /* * NOTE : This code assumes that the number of ports found in the @@ -1252,7 +1250,7 @@ static int __init pc_init(void) if ((board_id & 0x30) == 0x30) bd->memory_seg = 0x8000; } else - printk(KERN_ERR "epca: Board at 0x%x doesn't appear to be an XI\n",(int)bd->port); + printk(KERN_ERR "epca: Board at 0x%x doesn't appear to be an XI\n", (int)bd->port); break; } } @@ -1326,12 +1324,12 @@ static void post_fep_init(unsigned int crd) */ /* PCI cards are already remapped at this point ISA are not */ bd->numports = readw(bd->re_map_membase + XEMPORTS); - epcaassert(bd->numports <= 64,"PCI returned a invalid number of ports"); + epcaassert(bd->numports <= 64, "PCI returned a invalid number of ports"); nbdevs += (bd->numports); } else { /* Fix up the mappings for ISA/EISA etc */ /* FIXME: 64K - can we be smarter ? */ - bd->re_map_membase = ioremap(bd->membase, 0x10000); + bd->re_map_membase = ioremap_nocache(bd->membase, 0x10000); } if (crd != 0) @@ -1362,7 +1360,8 @@ static void post_fep_init(unsigned int crd) * XEPORTS (address 0xc22) points at the number of channels the card * supports. (For 64XE, XI, XEM, and XR use 0xc02) */ - if ((bd->type == PCXEVE || bd->type == PCXE) && (readw(memaddr + XEPORTS) < 3)) + if ((bd->type == PCXEVE || bd->type == PCXE) && + (readw(memaddr + XEPORTS) < 3)) shrinkmem = 1; if (bd->type < PCIXEM) if (!request_region((int)bd->port, 4, board_desc[bd->type])) @@ -1461,10 +1460,12 @@ static void post_fep_init(unsigned int crd) case PCXEVE: case PCXE: - ch->txptr = memaddr + (((tseg - bd->memory_seg) << 4) & 0x1fff); + ch->txptr = memaddr + (((tseg - bd->memory_seg) << 4) + & 0x1fff); ch->txwin = FEPWIN | ((tseg - bd->memory_seg) >> 9); - ch->rxptr = memaddr + (((rseg - bd->memory_seg) << 4) & 0x1fff); - ch->rxwin = FEPWIN | ((rseg - bd->memory_seg) >>9 ); + ch->rxptr = memaddr + (((rseg - bd->memory_seg) << 4) + & 0x1fff); + ch->rxwin = FEPWIN | ((rseg - bd->memory_seg) >> 9); break; case PCXI: @@ -1518,8 +1519,9 @@ static void post_fep_init(unsigned int crd) } printk(KERN_INFO - "Digi PC/Xx Driver V%s: %s I/O = 0x%lx Mem = 0x%lx Ports = %d\n", - VERSION, board_desc[bd->type], (long)bd->port, (long)bd->membase, bd->numports); + "Digi PC/Xx Driver V%s: %s I/O = 0x%lx Mem = 0x%lx Ports = %d\n", + VERSION, board_desc[bd->type], (long)bd->port, + (long)bd->membase, bd->numports); memwinoff(bd, 0); } @@ -1527,7 +1529,7 @@ static void epcapoll(unsigned long ignored) { unsigned long flags; int crd; - volatile unsigned int head, tail; + unsigned int head, tail; struct channel *ch; struct board_info *bd; @@ -1593,7 +1595,9 @@ static void doevent(int crd) chan0 = card_ptr[crd]; epcaassert(chan0 <= &digi_channels[nbdevs - 1], "ch out of range"); assertgwinon(chan0); - while ((tail = readw(&chan0->mailbox->eout)) != (head = readw(&chan0->mailbox->ein))) { /* Begin while something in event queue */ + while ((tail = readw(&chan0->mailbox->eout)) != + (head = readw(&chan0->mailbox->ein))) { + /* Begin while something in event queue */ assertgwinon(chan0); eventbuf = bd->re_map_membase + tail + ISTART; /* Get the channel the event occurred on */ @@ -1617,7 +1621,8 @@ static void doevent(int crd) goto next; } - if ((bc = ch->brdchan) == NULL) + bc = ch->brdchan; + if (bc == NULL) goto next; if (event & DATA_IND) { /* Begin DATA_IND */ @@ -1629,10 +1634,11 @@ static void doevent(int crd) /* A modem signal change has been indicated */ ch->imodem = mstat; if (ch->asyncflags & ASYNC_CHECK_CD) { - if (mstat & ch->dcd) /* We are now receiving dcd */ + /* We are now receiving dcd */ + if (mstat & ch->dcd) wake_up_interruptible(&ch->open_wait); - else - pc_sched_event(ch, EPCA_EVENT_HANGUP); /* No dcd; hangup */ + else /* No dcd; hangup */ + pc_sched_event(ch, EPCA_EVENT_HANGUP); } } tty = ch->tty; @@ -1647,7 +1653,8 @@ static void doevent(int crd) tty_wakeup(tty); } } else if (event & EMPTYTX_IND) { - /* This event is generated by setup_empty_event */ + /* This event is generated by + setup_empty_event */ ch->statusflags &= ~TXBUSY; if (ch->statusflags & EMPTYWAIT) { ch->statusflags &= ~EMPTYWAIT; @@ -1655,7 +1662,7 @@ static void doevent(int crd) } } } - next: +next: globalwinon(ch); BUG_ON(!bc); writew(1, &bc->idata); @@ -1665,7 +1672,7 @@ static void doevent(int crd) } static void fepcmd(struct channel *ch, int cmd, int word_or_byte, - int byte2, int ncmds, int bytecmd) + int byte2, int ncmds, int bytecmd) { unchar __iomem *memaddr; unsigned int head, cmdTail, cmdStart, cmdMax; @@ -1690,8 +1697,10 @@ static void fepcmd(struct channel *ch, int cmd, int word_or_byte, memaddr = ch->board->re_map_membase; if (head >= (cmdMax - cmdStart) || (head & 03)) { - printk(KERN_ERR "line %d: Out of range, cmd = %x, head = %x\n", __LINE__, cmd, head); - printk(KERN_ERR "line %d: Out of range, cmdMax = %x, cmdStart = %x\n", __LINE__, cmdMax, cmdStart); + printk(KERN_ERR "line %d: Out of range, cmd = %x, head = %x\n", + __LINE__, cmd, head); + printk(KERN_ERR "line %d: Out of range, cmdMax = %x, cmdStart = %x\n", + __LINE__, cmdMax, cmdStart); return; } if (bytecmd) { @@ -1770,7 +1779,7 @@ static unsigned termios2digi_h(struct channel *ch, unsigned cflag) static unsigned termios2digi_i(struct channel *ch, unsigned iflag) { unsigned res = iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | - INPCK | ISTRIP|IXON|IXANY|IXOFF); + INPCK | ISTRIP | IXON | IXANY | IXOFF); if (ch->digiext.digi_flags & DIGI_AIXON) res |= IAIXON; return res; @@ -1838,7 +1847,7 @@ static void epcaparam(struct tty_struct *tty, struct channel *ch) unsigned mval, hflow, cflag, iflag; bc = ch->brdchan; - epcaassert(bc !=0, "bc out of range"); + epcaassert(bc != NULL, "bc out of range"); assertgwinon(ch); ts = tty->termios; @@ -1884,8 +1893,10 @@ static void epcaparam(struct tty_struct *tty, struct channel *ch) * Command sets channels iflag structure on the board. Such * things as input soft flow control, handling of parity * errors, and break handling are all set here. + * + * break handling, parity handling, input stripping, + * flow control chars */ - /* break handling, parity handling, input stripping, flow control chars */ fepcmd(ch, SETIFLAGS, (unsigned int) ch->fepiflag, 0, 0, 0); } /* @@ -1981,7 +1992,7 @@ static void receive_data(struct channel *ch) return; /* If CREAD bit is off or device not open, set TX tail to head */ - if (!tty || !ts || !(ts->c_cflag & CREAD)) { + if (!tty || !ts || !(ts->c_cflag & CREAD)) { writew(head, &bc->rout); return; } @@ -1991,18 +2002,21 @@ static void receive_data(struct channel *ch) if (readb(&bc->orun)) { writeb(0, &bc->orun); - printk(KERN_WARNING "epca; overrun! DigiBoard device %s\n",tty->name); + printk(KERN_WARNING "epca; overrun! DigiBoard device %s\n", + tty->name); tty_insert_flip_char(tty, 0, TTY_OVERRUN); } rxwinon(ch); - while (bytesAvailable > 0) { /* Begin while there is data on the card */ + while (bytesAvailable > 0) { + /* Begin while there is data on the card */ wrapgap = (head >= tail) ? head - tail : ch->rxbufsize - tail; /* * Even if head has wrapped around only report the amount of * data to be equal to the size - tail. Remember memcpy can't * automaticly wrap around the receive buffer. */ - dataToRead = (wrapgap < bytesAvailable) ? wrapgap : bytesAvailable; + dataToRead = (wrapgap < bytesAvailable) ? wrapgap + : bytesAvailable; /* Make sure we don't overflow the buffer */ dataToRead = tty_prepare_flip_string(tty, &rptr, dataToRead); if (dataToRead == 0) @@ -2153,14 +2167,14 @@ static int pc_tiocmset(struct tty_struct *tty, struct file *file, * The below routine generally sets up parity, baud, flow control * issues, etc.... It effect both control flags and input flags. */ - epcaparam(tty,ch); + epcaparam(tty, ch); memoff(ch); spin_unlock_irqrestore(&epca_lock, flags); return 0; } -static int pc_ioctl(struct tty_struct *tty, struct file * file, - unsigned int cmd, unsigned long arg) +static int pc_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg) { digiflow_t dflow; int retval; @@ -2175,7 +2189,6 @@ static int pc_ioctl(struct tty_struct *tty, struct file * file, bc = ch->brdchan; else return -EINVAL; - /* * For POSIX compliance we need to add more ioctls. See tty_ioctl.c in * /usr/src/linux/drivers/char for a good example. In particular think @@ -2186,9 +2199,10 @@ static int pc_ioctl(struct tty_struct *tty, struct file * file, retval = tty_check_change(tty); if (retval) return retval; - /* Setup an event to indicate when the transmit buffer empties */ + /* Setup an event to indicate when the transmit + buffer empties */ spin_lock_irqsave(&epca_lock, flags); - setup_empty_event(tty,ch); + setup_empty_event(tty, ch); spin_unlock_irqrestore(&epca_lock, flags); tty_wait_until_sent(tty, 0); if (!arg) @@ -2198,29 +2212,14 @@ static int pc_ioctl(struct tty_struct *tty, struct file * file, retval = tty_check_change(tty); if (retval) return retval; - - /* Setup an event to indicate when the transmit buffer empties */ + /* Setup an event to indicate when the transmit buffer + empties */ spin_lock_irqsave(&epca_lock, flags); - setup_empty_event(tty,ch); + setup_empty_event(tty, ch); spin_unlock_irqrestore(&epca_lock, flags); tty_wait_until_sent(tty, 0); digi_send_break(ch, arg ? arg*(HZ/10) : HZ/4); return 0; - case TIOCGSOFTCAR: - if (put_user(C_CLOCAL(tty)?1:0, (unsigned long __user *)arg)) - return -EFAULT; - return 0; - case TIOCSSOFTCAR: - { - unsigned int value; - - if (get_user(value, (unsigned __user *)argp)) - return -EFAULT; - tty->termios->c_cflag = - ((tty->termios->c_cflag & ~CLOCAL) | - (value ? CLOCAL : 0)); - return 0; - } case TIOCMODG: mflag = pc_tiocmget(tty, file); if (put_user(mflag, (unsigned long __user *)argp)) @@ -2253,10 +2252,12 @@ static int pc_ioctl(struct tty_struct *tty, struct file * file, break; case DIGI_SETAW: case DIGI_SETAF: + lock_kernel(); if (cmd == DIGI_SETAW) { - /* Setup an event to indicate when the transmit buffer empties */ + /* Setup an event to indicate when the transmit + buffer empties */ spin_lock_irqsave(&epca_lock, flags); - setup_empty_event(tty,ch); + setup_empty_event(tty, ch); spin_unlock_irqrestore(&epca_lock, flags); tty_wait_until_sent(tty, 0); } else { @@ -2264,6 +2265,7 @@ static int pc_ioctl(struct tty_struct *tty, struct file * file, if (tty->ldisc.flush_buffer) tty->ldisc.flush_buffer(tty); } + unlock_kernel(); /* Fall Thru */ case DIGI_SETA: if (copy_from_user(&ch->digiext, argp, sizeof(digi_t))) @@ -2285,7 +2287,7 @@ static int pc_ioctl(struct tty_struct *tty, struct file * file, * control issues, etc.... It effect both control flags and * input flags. */ - epcaparam(tty,ch); + epcaparam(tty, ch); memoff(ch); spin_unlock_irqrestore(&epca_lock, flags); break; @@ -2321,18 +2323,21 @@ static int pc_ioctl(struct tty_struct *tty, struct file * file, if (copy_from_user(&dflow, argp, sizeof(dflow))) return -EFAULT; - if (dflow.startc != startc || dflow.stopc != stopc) { /* Begin if setflow toggled */ + if (dflow.startc != startc || dflow.stopc != stopc) { + /* Begin if setflow toggled */ spin_lock_irqsave(&epca_lock, flags); globalwinon(ch); if (cmd == DIGI_SETFLOW) { ch->fepstartc = ch->startc = dflow.startc; ch->fepstopc = ch->stopc = dflow.stopc; - fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1); + fepcmd(ch, SONOFFC, ch->fepstartc, + ch->fepstopc, 0, 1); } else { ch->fepstartca = ch->startca = dflow.startc; ch->fepstopca = ch->stopca = dflow.stopc; - fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1); + fepcmd(ch, SAUXONOFFC, ch->fepstartca, + ch->fepstopca, 0, 1); } if (ch->statusflags & TXSTOPPED) @@ -2356,7 +2361,9 @@ static void pc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) != NULL) { /* Begin if channel valid */ + ch = verifyChannel(tty); + + if (ch != NULL) { /* Begin if channel valid */ spin_lock_irqsave(&epca_lock, flags); globalwinon(ch); epcaparam(tty, ch); @@ -2383,7 +2390,7 @@ static void do_softint(struct work_struct *work) if (tty && tty->driver_data) { if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) { - tty_hangup(tty); /* FIXME: module removal race here - AKPM */ + tty_hangup(tty); wake_up_interruptible(&ch->open_wait); ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; } @@ -2403,9 +2410,11 @@ static void pc_stop(struct tty_struct *tty) * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) != NULL) { + ch = verifyChannel(tty); + if (ch != NULL) { spin_lock_irqsave(&epca_lock, flags); - if ((ch->statusflags & TXSTOPPED) == 0) { /* Begin if transmit stop requested */ + if ((ch->statusflags & TXSTOPPED) == 0) { + /* Begin if transmit stop requested */ globalwinon(ch); /* STOP transmitting now !! */ fepcmd(ch, PAUSETX, 0, 0, 0, 0); @@ -2423,11 +2432,14 @@ static void pc_start(struct tty_struct *tty) * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) != NULL) { + ch = verifyChannel(tty); + if (ch != NULL) { unsigned long flags; spin_lock_irqsave(&epca_lock, flags); - /* Just in case output was resumed because of a change in Digi-flow */ - if (ch->statusflags & TXSTOPPED) { /* Begin transmit resume requested */ + /* Just in case output was resumed because of a change + in Digi-flow */ + if (ch->statusflags & TXSTOPPED) { + /* Begin transmit resume requested */ struct board_chan __iomem *bc; globalwinon(ch); bc = ch->brdchan; @@ -2457,7 +2469,8 @@ static void pc_throttle(struct tty_struct *tty) * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) != NULL) { + ch = verifyChannel(tty); + if (ch != NULL) { spin_lock_irqsave(&epca_lock, flags); if ((ch->statusflags & RXSTOPPED) == 0) { globalwinon(ch); @@ -2477,8 +2490,10 @@ static void pc_unthrottle(struct tty_struct *tty) * verifyChannel returns the channel from the tty struct if it is * valid. This serves as a sanity check. */ - if ((ch = verifyChannel(tty)) != NULL) { - /* Just in case output was resumed because of a change in Digi-flow */ + ch = verifyChannel(tty); + if (ch != NULL) { + /* Just in case output was resumed because of a change + in Digi-flow */ spin_lock_irqsave(&epca_lock, flags); if (ch->statusflags & RXSTOPPED) { globalwinon(ch); @@ -2490,7 +2505,7 @@ static void pc_unthrottle(struct tty_struct *tty) } } -void digi_send_break(struct channel *ch, int msec) +static void digi_send_break(struct channel *ch, int msec) { unsigned long flags; @@ -2523,7 +2538,7 @@ static void setup_empty_event(struct tty_struct *tty, struct channel *ch) memoff(ch); } -void epca_setup(char *str, int *ints) +static void epca_setup(char *str, int *ints) { struct board_info board; int index, loop, last; @@ -2552,14 +2567,16 @@ void epca_setup(char *str, int *ints) * instructing the driver to ignore epcaconfig.) For * this reason we check for 2. */ - if (board.status == 2) { /* Begin ignore epcaconfig as well as lilo cmd line */ + if (board.status == 2) { + /* Begin ignore epcaconfig as well as lilo cmd line */ nbdevs = 0; num_cards = 0; return; } /* End ignore epcaconfig as well as lilo cmd line */ if (board.status > 2) { - printk(KERN_ERR "epca_setup: Invalid board status 0x%x\n", board.status); + printk(KERN_ERR "epca_setup: Invalid board status 0x%x\n", + board.status); invalid_lilo_config = 1; setup_error_code |= INVALID_BOARD_STATUS; return; @@ -2613,7 +2630,8 @@ void epca_setup(char *str, int *ints) case 6: board.membase = ints[index]; if (ints[index] <= 0) { - printk(KERN_ERR "epca_setup: Invalid memory base 0x%x\n",(unsigned int)board.membase); + printk(KERN_ERR "epca_setup: Invalid memory base 0x%x\n", + (unsigned int)board.membase); invalid_lilo_config = 1; setup_error_code |= INVALID_MEM_BASE; return; @@ -2744,7 +2762,7 @@ void epca_setup(char *str, int *ints) t2++; if (*t2) { - printk(KERN_ERR "epca_setup: Invalid memory base %s\n",str); + printk(KERN_ERR "epca_setup: Invalid memory base %s\n", str); invalid_lilo_config = 1; setup_error_code |= INVALID_MEM_BASE; return; @@ -2766,7 +2784,7 @@ void epca_setup(char *str, int *ints) /* I should REALLY validate the stuff here */ /* Copies our local copy of board into boards */ - memcpy((void *)&boards[num_cards],(void *)&board, sizeof(board)); + memcpy((void *)&boards[num_cards], (void *)&board, sizeof(board)); /* Does this get called once per lilo arg are what ? */ printk(KERN_INFO "PC/Xx: Added board %i, %s %i ports at 0x%4.4X base 0x%6.6X\n", num_cards, board_desc[board.type], @@ -2807,9 +2825,9 @@ static int __devinit epca_init_one(struct pci_dev *pdev, if (board_idx >= MAXBOARDS) goto err_out; - addr = pci_resource_start (pdev, epca_info_tbl[info_idx].bar_idx); + addr = pci_resource_start(pdev, epca_info_tbl[info_idx].bar_idx); if (!addr) { - printk (KERN_ERR PFX "PCI region #%d not available (size 0)\n", + printk(KERN_ERR PFX "PCI region #%d not available (size 0)\n", epca_info_tbl[info_idx].bar_idx); goto err_out; } @@ -2820,28 +2838,29 @@ static int __devinit epca_init_one(struct pci_dev *pdev, boards[board_idx].port = addr + PCI_IO_OFFSET; boards[board_idx].membase = addr; - if (!request_mem_region (addr + PCI_IO_OFFSET, 0x200000, "epca")) { - printk (KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", + if (!request_mem_region(addr + PCI_IO_OFFSET, 0x200000, "epca")) { + printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", 0x200000, addr + PCI_IO_OFFSET); goto err_out; } - boards[board_idx].re_map_port = ioremap(addr + PCI_IO_OFFSET, 0x200000); + boards[board_idx].re_map_port = ioremap_nocache(addr + PCI_IO_OFFSET, + 0x200000); if (!boards[board_idx].re_map_port) { - printk (KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", + printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", 0x200000, addr + PCI_IO_OFFSET); goto err_out_free_pciio; } - if (!request_mem_region (addr, 0x200000, "epca")) { - printk (KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", + if (!request_mem_region(addr, 0x200000, "epca")) { + printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", 0x200000, addr); goto err_out_free_iounmap; } - boards[board_idx].re_map_membase = ioremap(addr, 0x200000); + boards[board_idx].re_map_membase = ioremap_nocache(addr, 0x200000); if (!boards[board_idx].re_map_membase) { - printk (KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", + printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", 0x200000, addr + PCI_IO_OFFSET); goto err_out_free_memregion; } @@ -2858,11 +2877,11 @@ static int __devinit epca_init_one(struct pci_dev *pdev, return 0; err_out_free_memregion: - release_mem_region (addr, 0x200000); + release_mem_region(addr, 0x200000); err_out_free_iounmap: - iounmap (boards[board_idx].re_map_port); + iounmap(boards[board_idx].re_map_port); err_out_free_pciio: - release_mem_region (addr + PCI_IO_OFFSET, 0x200000); + release_mem_region(addr + PCI_IO_OFFSET, 0x200000); err_out: return -ENODEV; } @@ -2878,9 +2897,9 @@ static struct pci_device_id epca_pci_tbl[] = { MODULE_DEVICE_TABLE(pci, epca_pci_tbl); -int __init init_PCI (void) +static int __init init_PCI(void) { - memset (&epca_driver, 0, sizeof (epca_driver)); + memset(&epca_driver, 0, sizeof(epca_driver)); epca_driver.name = "epca"; epca_driver.id_table = epca_pci_tbl; epca_driver.probe = epca_init_one; diff --git a/drivers/char/esp.c b/drivers/char/esp.c index f3fe6206734..84840ba13ff 100644 --- a/drivers/char/esp.c +++ b/drivers/char/esp.c @@ -8,7 +8,7 @@ * Extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92. Now * much more extensible to support other serial cards based on the * 16450/16550A UART's. Added support for the AST FourPort and the - * Accent Async board. + * Accent Async board. * * set_serial_info fixed to set the flags, custom divisor, and uart * type fields. Fix suggested by Michael K. Johnson 12/12/92. @@ -61,11 +61,11 @@ #include <linux/bitops.h> #include <asm/system.h> -#include <asm/io.h> +#include <linux/io.h> #include <asm/dma.h> #include <linux/slab.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/hayesesp.h> @@ -127,8 +127,10 @@ static struct tty_driver *esp_driver; #undef SERIAL_DEBUG_FLOW #if defined(MODULE) && defined(SERIAL_DEBUG_MCOUNT) -#define DBG_CNT(s) printk("(%s): [%x] refc=%d, serc=%d, ttyc=%d -> %s\n", \ - tty->name, (info->flags), serial_driver.refcount,info->count,tty->count,s) +#define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, serc=%d, ttyc=%d -> %s\n", \ + tty->name, info->flags, \ + serial_driver.refcount, \ + info->count, tty->count, s) #else #define DBG_CNT(s) #endif @@ -189,7 +191,7 @@ static inline void serial_out(struct esp_struct *info, int offset, */ static void rs_stop(struct tty_struct *tty) { - struct esp_struct *info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; if (serial_paranoia_check(info, tty->name, "rs_stop")) @@ -206,12 +208,12 @@ static void rs_stop(struct tty_struct *tty) static void rs_start(struct tty_struct *tty) { - struct esp_struct *info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; - + if (serial_paranoia_check(info, tty->name, "rs_start")) return; - + spin_lock_irqsave(&info->lock, flags); if (info->xmit_cnt && info->xmit_buf && !(info->IER & UART_IER_THRI)) { info->IER |= UART_IER_THRI; @@ -233,7 +235,7 @@ static void rs_start(struct tty_struct *tty) * rs_interrupt() should try to keep the interrupt handler as fast as * possible. After you are done making modifications, it is not a bad * idea to do: - * + * * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c * * and look at the resulting assemble code in serial.s. @@ -290,7 +292,7 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes) } status_mask = (info->read_status_mask >> 2) & 0x07; - + for (i = 0; i < num_bytes - 1; i += 2) { *((unsigned short *)(pio_buf->data + i)) = inw(info->port + UART_ESI_RX); @@ -325,8 +327,7 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes) flag = TTY_BREAK; if (info->flags & ASYNC_SAK) do_SAK(tty); - } - else if (err_buf->data[i] & 0x02) + } else if (err_buf->data[i] & 0x02) flag = TTY_FRAME; else if (err_buf->data[i] & 0x01) flag = TTY_PARITY; @@ -341,23 +342,29 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes) release_pio_buffer(err_buf); } -static inline void receive_chars_dma(struct esp_struct *info, int num_bytes) +static void program_isa_dma(int dma, int dir, unsigned long addr, int len) { unsigned long flags; + + flags = claim_dma_lock(); + disable_dma(dma); + clear_dma_ff(dma); + set_dma_mode(dma, dir); + set_dma_addr(dma, addr); + set_dma_count(dma, len); + enable_dma(dma); + release_dma_lock(flags); +} + +static void receive_chars_dma(struct esp_struct *info, int num_bytes) +{ info->stat_flags &= ~ESP_STAT_RX_TIMEOUT; dma_bytes = num_bytes; info->stat_flags |= ESP_STAT_DMA_RX; - - flags=claim_dma_lock(); - disable_dma(dma); - clear_dma_ff(dma); - set_dma_mode(dma, DMA_MODE_READ); - set_dma_addr(dma, isa_virt_to_bus(dma_buffer)); - set_dma_count(dma, dma_bytes); - enable_dma(dma); - release_dma_lock(flags); - - serial_out(info, UART_ESI_CMD1, ESI_START_DMA_RX); + + program_isa_dma(dma, DMA_MODE_READ, isa_virt_to_bus(dma_buffer), + dma_bytes); + serial_out(info, UART_ESI_CMD1, ESI_START_DMA_RX); } static inline void receive_chars_dma_done(struct esp_struct *info, @@ -366,22 +373,22 @@ static inline void receive_chars_dma_done(struct esp_struct *info, struct tty_struct *tty = info->tty; int num_bytes; unsigned long flags; - - flags=claim_dma_lock(); + + flags = claim_dma_lock(); disable_dma(dma); clear_dma_ff(dma); info->stat_flags &= ~ESP_STAT_DMA_RX; num_bytes = dma_bytes - get_dma_residue(dma); release_dma_lock(flags); - + info->icount.rx += num_bytes; if (num_bytes > 0) { tty_insert_flip_string(tty, dma_buffer, num_bytes - 1); status &= (0x1c & info->read_status_mask); - + /* Is the status significant or do we throw the last byte ? */ if (!(status & info->ignore_status_mask)) { int statflag = 0; @@ -393,13 +400,13 @@ static inline void receive_chars_dma_done(struct esp_struct *info, do_SAK(tty); } else if (status & 0x08) { statflag = TTY_FRAME; - (info->icount.frame)++; - } - else if (status & 0x04) { + info->icount.frame++; + } else if (status & 0x04) { statflag = TTY_PARITY; - (info->icount.parity)++; + info->icount.parity++; } - tty_insert_flip_char(tty, dma_buffer[num_bytes - 1], statflag); + tty_insert_flip_char(tty, dma_buffer[num_bytes - 1], + statflag); } tty_schedule_flip(tty); } @@ -484,8 +491,6 @@ static inline void transmit_chars_pio(struct esp_struct *info, /* Caller must hold info->lock */ static inline void transmit_chars_dma(struct esp_struct *info, int num_bytes) { - unsigned long flags; - dma_bytes = num_bytes; if (info->xmit_tail + dma_bytes <= ESP_XMIT_SIZE) { @@ -517,26 +522,18 @@ static inline void transmit_chars_dma(struct esp_struct *info, int num_bytes) } info->stat_flags |= ESP_STAT_DMA_TX; - - flags=claim_dma_lock(); - disable_dma(dma); - clear_dma_ff(dma); - set_dma_mode(dma, DMA_MODE_WRITE); - set_dma_addr(dma, isa_virt_to_bus(dma_buffer)); - set_dma_count(dma, dma_bytes); - enable_dma(dma); - release_dma_lock(flags); - - serial_out(info, UART_ESI_CMD1, ESI_START_DMA_TX); + + program_isa_dma(dma, DMA_MODE_WRITE, isa_virt_to_bus(dma_buffer), + dma_bytes); + serial_out(info, UART_ESI_CMD1, ESI_START_DMA_TX); } static inline void transmit_chars_dma_done(struct esp_struct *info) { int num_bytes; unsigned long flags; - - flags=claim_dma_lock(); + flags = claim_dma_lock(); disable_dma(dma); clear_dma_ff(dma); @@ -547,27 +544,21 @@ static inline void transmit_chars_dma_done(struct esp_struct *info) if (dma_bytes != num_bytes) { dma_bytes -= num_bytes; memmove(dma_buffer, dma_buffer + num_bytes, dma_bytes); - - flags=claim_dma_lock(); - disable_dma(dma); - clear_dma_ff(dma); - set_dma_mode(dma, DMA_MODE_WRITE); - set_dma_addr(dma, isa_virt_to_bus(dma_buffer)); - set_dma_count(dma, dma_bytes); - enable_dma(dma); - release_dma_lock(flags); - - serial_out(info, UART_ESI_CMD1, ESI_START_DMA_TX); + + program_isa_dma(dma, DMA_MODE_WRITE, + isa_virt_to_bus(dma_buffer), dma_bytes); + + serial_out(info, UART_ESI_CMD1, ESI_START_DMA_TX); } else { dma_bytes = 0; info->stat_flags &= ~ESP_STAT_DMA_TX; } } -static inline void check_modem_status(struct esp_struct *info) +static void check_modem_status(struct esp_struct *info) { int status; - + serial_out(info, UART_ESI_CMD1, ESI_GET_UART_STAT); status = serial_in(info, UART_ESI_STAT2); @@ -588,7 +579,7 @@ static inline void check_modem_status(struct esp_struct *info) #if (defined(SERIAL_DEBUG_OPEN) || defined(SERIAL_DEBUG_INTR)) printk("ttys%d CD now %s...", info->line, (status & UART_MSR_DCD) ? "on" : "off"); -#endif +#endif if (status & UART_MSR_DCD) wake_up_interruptible(&info->open_wait); else { @@ -605,7 +596,7 @@ static inline void check_modem_status(struct esp_struct *info) */ static irqreturn_t rs_interrupt_single(int irq, void *dev_id) { - struct esp_struct * info; + struct esp_struct *info; unsigned err_status; unsigned int scratch; @@ -617,7 +608,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id) scratch = serial_in(info, UART_ESI_SID); spin_lock(&info->lock); - + if (!info->tty) { spin_unlock(&info->lock); return IRQ_NONE; @@ -637,7 +628,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id) if (err_status & 0x80) /* Start break */ wake_up_interruptible(&info->break_wait); } - + if ((scratch & 0x88) || /* DMA completed or timed out */ (err_status & 0x1c) /* receive error */) { if (info->stat_flags & ESP_STAT_DMA_RX) @@ -667,7 +658,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id) receive_chars_dma(info, num_bytes); } } - + if (!(info->stat_flags & (ESP_STAT_DMA_RX | ESP_STAT_DMA_TX)) && (scratch & 0x02) && (info->IER & UART_IER_THRI)) { if ((info->xmit_cnt <= 0) || info->tty->stopped) { @@ -722,11 +713,11 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id) * --------------------------------------------------------------- */ -static inline void esp_basic_init(struct esp_struct * info) +static void esp_basic_init(struct esp_struct *info) { /* put ESPC in enhanced mode */ serial_out(info, UART_ESI_CMD1, ESI_SET_MODE); - + if (info->stat_flags & ESP_STAT_NEVER_DMA) serial_out(info, UART_ESI_CMD2, 0x01); else @@ -783,13 +774,13 @@ static inline void esp_basic_init(struct esp_struct * info) serial_out(info, UART_ESI_CMD2, 0xff); } -static int startup(struct esp_struct * info) +static int startup(struct esp_struct *info) { unsigned long flags; - int retval=0; - unsigned int num_chars; + int retval = 0; + unsigned int num_chars; - spin_lock_irqsave(&info->lock, flags); + spin_lock_irqsave(&info->lock, flags); if (info->flags & ASYNC_INITIALIZED) goto out; @@ -802,7 +793,8 @@ static int startup(struct esp_struct * info) } #ifdef SERIAL_DEBUG_OPEN - printk("starting up ttys%d (irq %d)...", info->line, info->irq); + printk(KERN_DEBUG "starting up ttys%d (irq %d)...", + info->line, info->irq); #endif /* Flush the RX buffer. Using the ESI flush command may cause */ @@ -863,7 +855,7 @@ static int startup(struct esp_struct * info) dma_buffer = NULL; info->stat_flags |= ESP_STAT_USE_PIO; } - + } info->MCR = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2; @@ -872,7 +864,7 @@ static int startup(struct esp_struct * info) serial_out(info, UART_ESI_CMD1, ESI_WRITE_UART); serial_out(info, UART_ESI_CMD2, UART_MCR); serial_out(info, UART_ESI_CMD2, info->MCR); - + /* * Finally, enable interrupts */ @@ -881,7 +873,7 @@ static int startup(struct esp_struct * info) UART_IER_DMA_TC; serial_out(info, UART_ESI_CMD1, ESI_SET_SRV_MASK); serial_out(info, UART_ESI_CMD2, info->IER); - + if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags); info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; @@ -900,7 +892,7 @@ static int startup(struct esp_struct * info) if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) info->tty->alt_speed = 460800; } - + /* * set the speed of the serial port */ @@ -918,7 +910,7 @@ out_unlocked: * This routine will shutdown a serial port; interrupts are disabled, and * DTR is dropped if the hangup on close termio flag is on. */ -static void shutdown(struct esp_struct * info) +static void shutdown(struct esp_struct *info) { unsigned long flags, f; @@ -929,7 +921,7 @@ static void shutdown(struct esp_struct * info) printk("Shutting down serial port %d (irq %d)....", info->line, info->irq); #endif - + spin_lock_irqsave(&info->lock, flags); /* * clear delta_msr_wait queue to avoid mem leaks: we may free the irq @@ -941,14 +933,14 @@ static void shutdown(struct esp_struct * info) /* stop a DMA transfer on the port being closed */ /* DMA lock is higher priority always */ if (info->stat_flags & (ESP_STAT_DMA_RX | ESP_STAT_DMA_TX)) { - f=claim_dma_lock(); + f = claim_dma_lock(); disable_dma(dma); clear_dma_ff(dma); release_dma_lock(f); - + dma_bytes = 0; } - + /* * Free the IRQ */ @@ -970,7 +962,7 @@ static void shutdown(struct esp_struct * info) free_pages((unsigned long)dma_buffer, get_order(DMA_BUFFER_SZ)); dma_buffer = NULL; - } + } } if (info->xmit_buf) { @@ -992,7 +984,7 @@ static void shutdown(struct esp_struct * info) if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags); - + info->flags &= ~ASYNC_INITIALIZED; spin_unlock_irqrestore(&info->lock, flags); } @@ -1005,7 +997,7 @@ static void change_speed(struct esp_struct *info) { unsigned short port; int quot = 0; - unsigned cflag,cval; + unsigned cflag, cval; int baud, bits; unsigned char flow1 = 0, flow2 = 0; unsigned long flags; @@ -1014,14 +1006,14 @@ static void change_speed(struct esp_struct *info) return; cflag = info->tty->termios->c_cflag; port = info->port; - + /* byte size and parity */ switch (cflag & CSIZE) { - case CS5: cval = 0x00; bits = 7; break; - case CS6: cval = 0x01; bits = 8; break; - case CS7: cval = 0x02; bits = 9; break; - case CS8: cval = 0x03; bits = 10; break; - default: cval = 0x00; bits = 7; break; + case CS5: cval = 0x00; bits = 7; break; + case CS6: cval = 0x01; bits = 8; break; + case CS7: cval = 0x02; bits = 9; break; + case CS8: cval = 0x03; bits = 10; break; + default: cval = 0x00; bits = 7; break; } if (cflag & CSTOPB) { cval |= 0x04; @@ -1037,14 +1029,12 @@ static void change_speed(struct esp_struct *info) if (cflag & CMSPAR) cval |= UART_LCR_SPAR; #endif - baud = tty_get_baud_rate(info->tty); if (baud == 38400 && - ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) + ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) quot = info->custom_divisor; else { - if (baud == 134) - /* Special case since 134 is really 134.5 */ + if (baud == 134) /* Special case since 134 is really 134.5 */ quot = (2*BASE_BAUD / 269); else if (baud) quot = BASE_BAUD / baud; @@ -1052,7 +1042,12 @@ static void change_speed(struct esp_struct *info) /* If the quotient is ever zero, default to 9600 bps */ if (!quot) quot = BASE_BAUD / 9600; - + + if (baud) { + /* Actual rate */ + baud = BASE_BAUD/quot; + tty_encode_baud_rate(info->tty, baud, baud); + } info->timeout = ((1024 * HZ * bits * quot) / BASE_BAUD) + (HZ / 50); /* CTS flow control flag and modem status interrupts */ @@ -1066,10 +1061,8 @@ static void change_speed(struct esp_struct *info) info->flags &= ~ASYNC_CTS_FLOW; if (cflag & CLOCAL) info->flags &= ~ASYNC_CHECK_CD; - else { + else info->flags |= ASYNC_CHECK_CD; - /* info->IER |= UART_IER_MSI; */ - } /* * Set up parity check flag @@ -1079,7 +1072,7 @@ static void change_speed(struct esp_struct *info) info->read_status_mask |= UART_LSR_FE | UART_LSR_PE; if (I_BRKINT(info->tty) || I_PARMRK(info->tty)) info->read_status_mask |= UART_LSR_BI; - + info->ignore_status_mask = 0; #if 0 /* This should be safe, but for some broken bits of hardware... */ @@ -1092,7 +1085,7 @@ static void change_speed(struct esp_struct *info) info->ignore_status_mask |= UART_LSR_BI; info->read_status_mask |= UART_LSR_BI; /* - * If we're ignore parity and break indicators, ignore + * If we're ignore parity and break indicators, ignore * overruns too. (For real raw support). */ if (I_IGNPAR(info->tty)) { @@ -1130,19 +1123,19 @@ static void change_speed(struct esp_struct *info) serial_out(info, UART_ESI_CMD2, 0x10); serial_out(info, UART_ESI_CMD2, 0x21); switch (cflag & CSIZE) { - case CS5: - serial_out(info, UART_ESI_CMD2, 0x1f); - break; - case CS6: - serial_out(info, UART_ESI_CMD2, 0x3f); - break; - case CS7: - case CS8: - serial_out(info, UART_ESI_CMD2, 0x7f); - break; - default: - serial_out(info, UART_ESI_CMD2, 0xff); - break; + case CS5: + serial_out(info, UART_ESI_CMD2, 0x1f); + break; + case CS6: + serial_out(info, UART_ESI_CMD2, 0x3f); + break; + case CS7: + case CS8: + serial_out(info, UART_ESI_CMD2, 0x7f); + break; + default: + serial_out(info, UART_ESI_CMD2, 0xff); + break; } } @@ -1156,31 +1149,34 @@ static void change_speed(struct esp_struct *info) spin_unlock_irqrestore(&info->lock, flags); } -static void rs_put_char(struct tty_struct *tty, unsigned char ch) +static int rs_put_char(struct tty_struct *tty, unsigned char ch) { - struct esp_struct *info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; + int ret = 0; if (serial_paranoia_check(info, tty->name, "rs_put_char")) - return; + return 0; if (!info->xmit_buf) - return; + return 0; spin_lock_irqsave(&info->lock, flags); if (info->xmit_cnt < ESP_XMIT_SIZE - 1) { info->xmit_buf[info->xmit_head++] = ch; info->xmit_head &= ESP_XMIT_SIZE-1; info->xmit_cnt++; + ret = 1; } spin_unlock_irqrestore(&info->lock, flags); + return ret; } static void rs_flush_chars(struct tty_struct *tty) { - struct esp_struct *info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; - + if (serial_paranoia_check(info, tty->name, "rs_flush_chars")) return; @@ -1198,11 +1194,11 @@ out: spin_unlock_irqrestore(&info->lock, flags); } -static int rs_write(struct tty_struct * tty, +static int rs_write(struct tty_struct *tty, const unsigned char *buf, int count) { int c, t, ret = 0; - struct esp_struct *info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; if (serial_paranoia_check(info, tty->name, "rs_write")) @@ -1210,19 +1206,19 @@ static int rs_write(struct tty_struct * tty, if (!info->xmit_buf) return 0; - + while (1) { /* Thanks to R. Wolff for suggesting how to do this with */ /* interrupts enabled */ c = count; t = ESP_XMIT_SIZE - info->xmit_cnt - 1; - + if (t < c) c = t; t = ESP_XMIT_SIZE - info->xmit_head; - + if (t < c) c = t; @@ -1252,10 +1248,10 @@ static int rs_write(struct tty_struct * tty, static int rs_write_room(struct tty_struct *tty) { - struct esp_struct *info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; int ret; unsigned long flags; - + if (serial_paranoia_check(info, tty->name, "rs_write_room")) return 0; @@ -1270,8 +1266,8 @@ static int rs_write_room(struct tty_struct *tty) static int rs_chars_in_buffer(struct tty_struct *tty) { - struct esp_struct *info = (struct esp_struct *)tty->driver_data; - + struct esp_struct *info = tty->driver_data; + if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer")) return 0; return info->xmit_cnt; @@ -1279,9 +1275,9 @@ static int rs_chars_in_buffer(struct tty_struct *tty) static void rs_flush_buffer(struct tty_struct *tty) { - struct esp_struct *info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; - + if (serial_paranoia_check(info, tty->name, "rs_flush_buffer")) return; spin_lock_irqsave(&info->lock, flags); @@ -1293,20 +1289,20 @@ static void rs_flush_buffer(struct tty_struct *tty) /* * ------------------------------------------------------------ * rs_throttle() - * + * * This routine is called by the upper-layer tty layer to signal that * incoming characters should be throttled. * ------------------------------------------------------------ */ -static void rs_throttle(struct tty_struct * tty) +static void rs_throttle(struct tty_struct *tty) { - struct esp_struct *info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; #ifdef SERIAL_DEBUG_THROTTLE char buf[64]; - + printk("throttle %s: %d....\n", tty_name(tty, buf), - tty->ldisc.chars_in_buffer(tty)); + tty_chars_in_buffer(tty)); #endif if (serial_paranoia_check(info, tty->name, "rs_throttle")) @@ -1321,20 +1317,20 @@ static void rs_throttle(struct tty_struct * tty) spin_unlock_irqrestore(&info->lock, flags); } -static void rs_unthrottle(struct tty_struct * tty) +static void rs_unthrottle(struct tty_struct *tty) { - struct esp_struct *info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; #ifdef SERIAL_DEBUG_THROTTLE char buf[64]; - - printk("unthrottle %s: %d....\n", tty_name(tty, buf), - tty->ldisc.chars_in_buffer(tty)); + + printk(KERN_DEBUG "unthrottle %s: %d....\n", tty_name(tty, buf), + tty_chars_in_buffer(tty)); #endif if (serial_paranoia_check(info, tty->name, "rs_unthrottle")) return; - + spin_lock_irqsave(&info->lock, flags); info->IER |= UART_IER_RDI; serial_out(info, UART_ESI_CMD1, ESI_SET_SRV_MASK); @@ -1350,11 +1346,12 @@ static void rs_unthrottle(struct tty_struct * tty) * ------------------------------------------------------------ */ -static int get_serial_info(struct esp_struct * info, +static int get_serial_info(struct esp_struct *info, struct serial_struct __user *retinfo) { struct serial_struct tmp; - + + lock_kernel(); memset(&tmp, 0, sizeof(tmp)); tmp.type = PORT_16550A; tmp.line = info->line; @@ -1367,20 +1364,22 @@ static int get_serial_info(struct esp_struct * info, tmp.closing_wait = info->closing_wait; tmp.custom_divisor = info->custom_divisor; tmp.hub6 = 0; - if (copy_to_user(retinfo,&tmp,sizeof(*retinfo))) + unlock_kernel(); + if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) return -EFAULT; return 0; } -static int get_esp_config(struct esp_struct * info, +static int get_esp_config(struct esp_struct *info, struct hayes_esp_config __user *retinfo) { struct hayes_esp_config tmp; - + if (!retinfo) return -EFAULT; memset(&tmp, 0, sizeof(tmp)); + lock_kernel(); tmp.rx_timeout = info->config.rx_timeout; tmp.rx_trigger = info->config.rx_trigger; tmp.tx_trigger = info->config.tx_trigger; @@ -1388,11 +1387,12 @@ static int get_esp_config(struct esp_struct * info, tmp.flow_on = info->config.flow_on; tmp.pio_threshold = info->config.pio_threshold; tmp.dma_channel = (info->stat_flags & ESP_STAT_NEVER_DMA ? 0 : dma); + unlock_kernel(); return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; } -static int set_serial_info(struct esp_struct * info, +static int set_serial_info(struct esp_struct *info, struct serial_struct __user *new_info) { struct serial_struct new_serial; @@ -1401,7 +1401,7 @@ static int set_serial_info(struct esp_struct * info, int retval = 0; struct esp_struct *current_async; - if (copy_from_user(&new_serial,new_info,sizeof(new_serial))) + if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) return -EFAULT; old_info = *info; @@ -1422,7 +1422,7 @@ static int set_serial_info(struct esp_struct * info, return -EINVAL; if (!capable(CAP_SYS_ADMIN)) { - if (change_irq || + if (change_irq || (new_serial.close_delay != info->close_delay) || ((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK))) @@ -1507,8 +1507,8 @@ static int set_serial_info(struct esp_struct * info, return retval; } -static int set_esp_config(struct esp_struct * info, - struct hayes_esp_config __user * new_info) +static int set_esp_config(struct esp_struct *info, + struct hayes_esp_config __user *new_info) { struct hayes_esp_config new_config; unsigned int change_dma; @@ -1550,7 +1550,6 @@ static int set_esp_config(struct esp_struct * info, if (new_config.dma_channel) { /* PIO mode to DMA mode transition OR */ /* change current DMA channel */ - current_async = ports; while (current_async) { @@ -1559,16 +1558,15 @@ static int set_esp_config(struct esp_struct * info, return -EBUSY; } else if (current_async->count) return -EBUSY; - - current_async = - current_async->next_port; + + current_async = current_async->next_port; } shutdown(info); dma = new_config.dma_channel; info->stat_flags &= ~ESP_STAT_NEVER_DMA; - - /* all ports must use the same DMA channel */ + + /* all ports must use the same DMA channel */ spin_lock_irqsave(&info->lock, flags); current_async = ports; @@ -1580,7 +1578,6 @@ static int set_esp_config(struct esp_struct * info, spin_unlock_irqrestore(&info->lock, flags); } else { /* DMA mode to PIO mode only */ - if (info->count > 1) return -EBUSY; @@ -1596,8 +1593,6 @@ static int set_esp_config(struct esp_struct * info, if ((new_config.flow_off != info->config.flow_off) || (new_config.flow_on != info->config.flow_on)) { - unsigned long flags; - info->config.flow_off = new_config.flow_off; info->config.flow_on = new_config.flow_on; @@ -1612,8 +1607,6 @@ static int set_esp_config(struct esp_struct * info, if ((new_config.rx_trigger != info->config.rx_trigger) || (new_config.tx_trigger != info->config.tx_trigger)) { - unsigned long flags; - info->config.rx_trigger = new_config.rx_trigger; info->config.tx_trigger = new_config.tx_trigger; spin_lock_irqsave(&info->lock, flags); @@ -1628,8 +1621,6 @@ static int set_esp_config(struct esp_struct * info, } if (new_config.rx_timeout != info->config.rx_timeout) { - unsigned long flags; - info->config.rx_timeout = new_config.rx_timeout; spin_lock_irqsave(&info->lock, flags); @@ -1657,9 +1648,9 @@ static int set_esp_config(struct esp_struct * info, * release the bus after transmitting. This must be done when * the transmit shift register is empty, not be done when the * transmit holding register is empty. This functionality - * allows an RS485 driver to be written in user space. + * allows an RS485 driver to be written in user space. */ -static int get_lsr_info(struct esp_struct * info, unsigned int __user *value) +static int get_lsr_info(struct esp_struct *info, unsigned int __user *value) { unsigned char status; unsigned int result; @@ -1670,17 +1661,17 @@ static int get_lsr_info(struct esp_struct * info, unsigned int __user *value) status = serial_in(info, UART_ESI_STAT1); spin_unlock_irqrestore(&info->lock, flags); result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); - return put_user(result,value); + return put_user(result, value); } static int esp_tiocmget(struct tty_struct *tty, struct file *file) { - struct esp_struct * info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned char control, status; unsigned long flags; - if (serial_paranoia_check(info, tty->name, __FUNCTION__)) + if (serial_paranoia_check(info, tty->name, __func__)) return -ENODEV; if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; @@ -1703,10 +1694,10 @@ static int esp_tiocmget(struct tty_struct *tty, struct file *file) static int esp_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) { - struct esp_struct * info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; - if (serial_paranoia_check(info, tty->name, __FUNCTION__)) + if (serial_paranoia_check(info, tty->name, __func__)) return -ENODEV; if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; @@ -1736,9 +1727,9 @@ static int esp_tiocmset(struct tty_struct *tty, struct file *file, */ static void esp_break(struct tty_struct *tty, int break_state) { - struct esp_struct * info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; - + if (serial_paranoia_check(info, tty->name, "esp_break")) return; @@ -1758,14 +1749,15 @@ static void esp_break(struct tty_struct *tty, int break_state) } } -static int rs_ioctl(struct tty_struct *tty, struct file * file, +static int rs_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { - struct esp_struct * info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; struct async_icount cprev, cnow; /* kernel counter temps */ struct serial_icounter_struct __user *p_cuser; /* user space */ void __user *argp = (void __user *)arg; unsigned long flags; + int ret; if (serial_paranoia_check(info, tty->name, "rs_ioctl")) return -ENODEV; @@ -1778,97 +1770,93 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file, if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; } - - switch (cmd) { - case TIOCGSERIAL: - return get_serial_info(info, argp); - case TIOCSSERIAL: - return set_serial_info(info, argp); - case TIOCSERCONFIG: - /* do not reconfigure after initial configuration */ - return 0; - - case TIOCSERGWILD: - return put_user(0L, (unsigned long __user *)argp); - case TIOCSERGETLSR: /* Get line status register */ - return get_lsr_info(info, argp); - - case TIOCSERSWILD: - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - return 0; - - /* - * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - * - mask passed in arg for lines of interest - * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) - * Caller should use TIOCGICOUNT to see which one it was - */ - case TIOCMIWAIT: + switch (cmd) { + case TIOCGSERIAL: + return get_serial_info(info, argp); + case TIOCSSERIAL: + lock_kernel(); + ret = set_serial_info(info, argp); + unlock_kernel(); + return ret; + case TIOCSERGWILD: + return put_user(0L, (unsigned long __user *)argp); + case TIOCSERGETLSR: /* Get line status register */ + return get_lsr_info(info, argp); + case TIOCSERSWILD: + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + return 0; + /* + * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change + * - mask passed in arg for lines of interest + * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) + * Caller should use TIOCGICOUNT to see which one it was + */ + case TIOCMIWAIT: + spin_lock_irqsave(&info->lock, flags); + cprev = info->icount; /* note the counters on entry */ + spin_unlock_irqrestore(&info->lock, flags); + while (1) { + /* FIXME: convert to new style wakeup */ + interruptible_sleep_on(&info->delta_msr_wait); + /* see if a signal did it */ + if (signal_pending(current)) + return -ERESTARTSYS; spin_lock_irqsave(&info->lock, flags); - cprev = info->icount; /* note the counters on entry */ + cnow = info->icount; /* atomic copy */ spin_unlock_irqrestore(&info->lock, flags); - while (1) { - /* FIXME: convert to new style wakeup */ - interruptible_sleep_on(&info->delta_msr_wait); - /* see if a signal did it */ - if (signal_pending(current)) - return -ERESTARTSYS; - spin_lock_irqsave(&info->lock, flags); - cnow = info->icount; /* atomic copy */ - spin_unlock_irqrestore(&info->lock, flags); - if (cnow.rng == cprev.rng && - cnow.dsr == cprev.dsr && - cnow.dcd == cprev.dcd && - cnow.cts == cprev.cts) - return -EIO; /* no change => error */ - if (((arg & TIOCM_RNG) && - (cnow.rng != cprev.rng)) || - ((arg & TIOCM_DSR) && - (cnow.dsr != cprev.dsr)) || - ((arg & TIOCM_CD) && - (cnow.dcd != cprev.dcd)) || - ((arg & TIOCM_CTS) && - (cnow.cts != cprev.cts)) ) { - return 0; - } - cprev = cnow; + if (cnow.rng == cprev.rng && + cnow.dsr == cprev.dsr && + cnow.dcd == cprev.dcd && + cnow.cts == cprev.cts) + return -EIO; /* no change => error */ + if (((arg & TIOCM_RNG) && + (cnow.rng != cprev.rng)) || + ((arg & TIOCM_DSR) && + (cnow.dsr != cprev.dsr)) || + ((arg & TIOCM_CD) && + (cnow.dcd != cprev.dcd)) || + ((arg & TIOCM_CTS) && + (cnow.cts != cprev.cts))) { + return 0; } - /* NOTREACHED */ - - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ - case TIOCGICOUNT: - spin_lock_irqsave(&info->lock, flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->lock, flags); - p_cuser = argp; - if (put_user(cnow.cts, &p_cuser->cts) || - put_user(cnow.dsr, &p_cuser->dsr) || - put_user(cnow.rng, &p_cuser->rng) || - put_user(cnow.dcd, &p_cuser->dcd)) - return -EFAULT; - + cprev = cnow; + } + /* NOTREACHED */ + /* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ + case TIOCGICOUNT: + spin_lock_irqsave(&info->lock, flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->lock, flags); + p_cuser = argp; + if (put_user(cnow.cts, &p_cuser->cts) || + put_user(cnow.dsr, &p_cuser->dsr) || + put_user(cnow.rng, &p_cuser->rng) || + put_user(cnow.dcd, &p_cuser->dcd)) + return -EFAULT; return 0; case TIOCGHAYESESP: return get_esp_config(info, argp); case TIOCSHAYESESP: - return set_esp_config(info, argp); - - default: - return -ENOIOCTLCMD; - } + lock_kernel(); + ret = set_esp_config(info, argp); + unlock_kernel(); + return ret; + default: + return -ENOIOCTLCMD; + } return 0; } static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios) { - struct esp_struct *info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; change_speed(info); @@ -1905,32 +1893,33 @@ static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios) /* * ------------------------------------------------------------ * rs_close() - * + * * This routine is called when the serial port gets closed. First, we * wait for the last remaining data to be sent. Then, we unlink its * async structure from the interrupt chain if necessary, and we free * that IRQ if nothing is left in the chain. * ------------------------------------------------------------ */ -static void rs_close(struct tty_struct *tty, struct file * filp) +static void rs_close(struct tty_struct *tty, struct file *filp) { - struct esp_struct * info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long flags; if (!info || serial_paranoia_check(info, tty->name, "rs_close")) return; - + spin_lock_irqsave(&info->lock, flags); - + if (tty_hung_up_p(filp)) { DBG_CNT("before DEC-hung"); goto out; } - + #ifdef SERIAL_DEBUG_OPEN - printk("rs_close ttys%d, count = %d\n", info->line, info->count); + printk(KERN_DEBUG "rs_close ttys%d, count = %d\n", + info->line, info->count); #endif - if ((tty->count == 1) && (info->count != 1)) { + if (tty->count == 1 && info->count != 1) { /* * Uh, oh. tty->count is 1, which means that the tty * structure will be freed. Info->count should always @@ -1938,12 +1927,11 @@ static void rs_close(struct tty_struct *tty, struct file * filp) * one, we've got real problems, since it means the * serial port won't be shutdown. */ - printk("rs_close: bad serial port count; tty->count is 1, " - "info->count is %d\n", info->count); + printk(KERN_DEBUG "rs_close: bad serial port count; tty->count is 1, info->count is %d\n", info->count); info->count = 1; } if (--info->count < 0) { - printk("rs_close: bad serial port count for ttys%d: %d\n", + printk(KERN_ERR "rs_close: bad serial port count for ttys%d: %d\n", info->line, info->count); info->count = 0; } @@ -1955,7 +1943,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp) spin_unlock_irqrestore(&info->lock, flags); /* - * Now we wait for the transmit buffer to clear; and we notify + * Now we wait for the transmit buffer to clear; and we notify * the line discipline to only process XON/XOFF characters. */ tty->closing = 1; @@ -1990,16 +1978,14 @@ static void rs_close(struct tty_struct *tty, struct file * filp) rs_wait_until_sent(tty, info->timeout); } shutdown(info); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + rs_flush_buffer(tty); tty_ldisc_flush(tty); tty->closing = 0; info->tty = NULL; if (info->blocked_open) { - if (info->close_delay) { + if (info->close_delay) msleep_interruptible(jiffies_to_msecs(info->close_delay)); - } wake_up_interruptible(&info->open_wait); } info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); @@ -2012,7 +1998,7 @@ out: static void rs_wait_until_sent(struct tty_struct *tty, int timeout) { - struct esp_struct *info = (struct esp_struct *)tty->driver_data; + struct esp_struct *info = tty->driver_data; unsigned long orig_jiffies, char_time; unsigned long flags; @@ -2036,10 +2022,10 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout) msleep_interruptible(jiffies_to_msecs(char_time)); if (signal_pending(current)) - break; + return; if (timeout && time_after(jiffies, orig_jiffies + timeout)) - break; + return; spin_lock_irqsave(&info->lock, flags); serial_out(info, UART_ESI_CMD1, ESI_NO_COMMAND); @@ -2054,11 +2040,11 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout) */ static void esp_hangup(struct tty_struct *tty) { - struct esp_struct * info = (struct esp_struct *)tty->driver_data; - + struct esp_struct *info = tty->driver_data; + if (serial_paranoia_check(info, tty->name, "esp_hangup")) return; - + rs_flush_buffer(tty); shutdown(info); info->count = 0; @@ -2072,7 +2058,7 @@ static void esp_hangup(struct tty_struct *tty) * esp_open() and friends * ------------------------------------------------------------ */ -static int block_til_ready(struct tty_struct *tty, struct file * filp, +static int block_til_ready(struct tty_struct *tty, struct file *filp, struct esp_struct *info) { DECLARE_WAITQUEUE(wait, current); @@ -2121,11 +2107,11 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, retval = 0; add_wait_queue(&info->open_wait, &wait); #ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready before block: ttys%d, count = %d\n", + printk(KERN_DEBUG "block_til_ready before block: ttys%d, count = %d\n", info->line, info->count); #endif spin_lock_irqsave(&info->lock, flags); - if (!tty_hung_up_p(filp)) + if (!tty_hung_up_p(filp)) info->count--; info->blocked_open++; while (1) { @@ -2147,7 +2133,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, if (info->flags & ASYNC_HUP_NOTIFY) retval = -EAGAIN; else - retval = -ERESTARTSYS; + retval = -ERESTARTSYS; #else retval = -EAGAIN; #endif @@ -2166,7 +2152,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, break; } #ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready blocking: ttys%d, count = %d\n", + printk(KERN_DEBUG "block_til_ready blocking: ttys%d, count = %d\n", info->line, info->count); #endif spin_unlock_irqrestore(&info->lock, flags); @@ -2180,14 +2166,14 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, info->blocked_open--; spin_unlock_irqrestore(&info->lock, flags); #ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready after blocking: ttys%d, count = %d\n", + printk(KERN_DEBUG "block_til_ready after blocking: ttys%d, count = %d\n", info->line, info->count); #endif if (retval) return retval; info->flags |= ASYNC_NORMAL_ACTIVE; return 0; -} +} /* * This routine is called whenever a serial port is opened. It @@ -2195,7 +2181,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, * the IRQ chain. It also performs the serial-specific * initialization for the tty structure. */ -static int esp_open(struct tty_struct *tty, struct file * filp) +static int esp_open(struct tty_struct *tty, struct file *filp) { struct esp_struct *info; int retval, line; @@ -2218,7 +2204,7 @@ static int esp_open(struct tty_struct *tty, struct file * filp) } #ifdef SERIAL_DEBUG_OPEN - printk("esp_open %s, count = %d\n", tty->name, info->count); + printk(KERN_DEBUG "esp_open %s, count = %d\n", tty->name, info->count); #endif spin_lock_irqsave(&info->lock, flags); info->count++; @@ -2226,7 +2212,7 @@ static int esp_open(struct tty_struct *tty, struct file * filp) info->tty = tty; spin_unlock_irqrestore(&info->lock, flags); - + /* * Start up serial port */ @@ -2237,14 +2223,13 @@ static int esp_open(struct tty_struct *tty, struct file * filp) retval = block_til_ready(tty, filp, info); if (retval) { #ifdef SERIAL_DEBUG_OPEN - printk("esp_open returning after block_til_ready with %d\n", + printk(KERN_DEBUG "esp_open returning after block_til_ready with %d\n", retval); #endif return retval; } - #ifdef SERIAL_DEBUG_OPEN - printk("esp_open %s successful...", tty->name); + printk(KERN_DEBUG "esp_open %s successful...", tty->name); #endif return 0; } @@ -2262,10 +2247,10 @@ static int esp_open(struct tty_struct *tty, struct file * filp) * number, and identifies which options were configured into this * driver. */ - -static inline void show_serial_version(void) + +static void show_serial_version(void) { - printk(KERN_INFO "%s version %s (DMA %u)\n", + printk(KERN_INFO "%s version %s (DMA %u)\n", serial_name, serial_version, dma); } @@ -2273,7 +2258,7 @@ static inline void show_serial_version(void) * This routine is called by espserial_init() to initialize a specific serial * port. */ -static inline int autoconfig(struct esp_struct * info) +static int autoconfig(struct esp_struct *info) { int port_detected = 0; unsigned long flags; @@ -2349,14 +2334,14 @@ static const struct tty_operations esp_ops = { static int __init espserial_init(void) { int i, offset; - struct esp_struct * info; + struct esp_struct *info; struct esp_struct *last_primary = NULL; - int esp[] = {0x100,0x140,0x180,0x200,0x240,0x280,0x300,0x380}; + int esp[] = { 0x100, 0x140, 0x180, 0x200, 0x240, 0x280, 0x300, 0x380 }; esp_driver = alloc_tty_driver(NR_PORTS); if (!esp_driver) return -ENOMEM; - + for (i = 0; i < NR_PRIMARY; i++) { if (irq[i] != 0) { if ((irq[i] < 2) || (irq[i] > 15) || (irq[i] == 6) || @@ -2378,20 +2363,20 @@ static int __init espserial_init(void) if ((flow_off < 1) || (flow_off > 1023)) flow_off = 1016; - + if ((flow_on < 1) || (flow_on > 1023)) flow_on = 944; if ((rx_timeout < 0) || (rx_timeout > 255)) rx_timeout = 128; - + if (flow_on >= flow_off) flow_on = flow_off - 1; show_serial_version(); /* Initialize the tty_driver structure */ - + esp_driver->owner = THIS_MODULE; esp_driver->name = "ttyP"; esp_driver->major = ESP_IN_MAJOR; @@ -2401,10 +2386,11 @@ static int __init espserial_init(void) esp_driver->init_termios = tty_std_termios; esp_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; + esp_driver->init_termios.c_ispeed = 9600; + esp_driver->init_termios.c_ospeed = 9600; esp_driver->flags = TTY_DRIVER_REAL_RAW; tty_set_operations(esp_driver, &esp_ops); - if (tty_register_driver(esp_driver)) - { + if (tty_register_driver(esp_driver)) { printk(KERN_ERR "Couldn't register esp serial driver"); put_tty_driver(esp_driver); return 1; @@ -2412,8 +2398,7 @@ static int __init espserial_init(void) info = kzalloc(sizeof(struct esp_struct), GFP_KERNEL); - if (!info) - { + if (!info) { printk(KERN_ERR "Couldn't allocate memory for esp serial device information\n"); tty_unregister_driver(esp_driver); put_tty_driver(esp_driver); @@ -2476,10 +2461,8 @@ static int __init espserial_init(void) info->stat_flags |= ESP_STAT_NEVER_DMA; info = kzalloc(sizeof(struct esp_struct), GFP_KERNEL); - if (!info) - { - printk(KERN_ERR "Couldn't allocate memory for esp serial device information\n"); - + if (!info) { + printk(KERN_ERR "Couldn't allocate memory for esp serial device information\n"); /* allow use of the already detected ports */ return 0; } @@ -2503,22 +2486,20 @@ static int __init espserial_init(void) return 0; } -static void __exit espserial_exit(void) +static void __exit espserial_exit(void) { int e1; struct esp_struct *temp_async; struct esp_pio_buffer *pio_buf; - /* printk("Unloading %s: version %s\n", serial_name, serial_version); */ - if ((e1 = tty_unregister_driver(esp_driver))) - printk("SERIAL: failed to unregister serial driver (%d)\n", - e1); + e1 = tty_unregister_driver(esp_driver); + if (e1) + printk(KERN_ERR "esp: failed to unregister driver (%d)\n", e1); put_tty_driver(esp_driver); while (ports) { - if (ports->port) { + if (ports->port) release_region(ports->port, REGION_SIZE); - } temp_async = ports->next_port; kfree(ports); ports = temp_async; diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c index 7ed7da1d99c..252f73e4859 100644 --- a/drivers/char/generic_serial.c +++ b/drivers/char/generic_serial.c @@ -40,27 +40,27 @@ static int gs_debug; #define gs_dprintk(f, str...) /* nothing */ #endif -#define func_enter() gs_dprintk (GS_DEBUG_FLOW, "gs: enter %s\n", __FUNCTION__) -#define func_exit() gs_dprintk (GS_DEBUG_FLOW, "gs: exit %s\n", __FUNCTION__) +#define func_enter() gs_dprintk (GS_DEBUG_FLOW, "gs: enter %s\n", __func__) +#define func_exit() gs_dprintk (GS_DEBUG_FLOW, "gs: exit %s\n", __func__) #define RS_EVENT_WRITE_WAKEUP 1 module_param(gs_debug, int, 0644); -void gs_put_char(struct tty_struct * tty, unsigned char ch) +int gs_put_char(struct tty_struct * tty, unsigned char ch) { struct gs_port *port; func_enter (); - if (!tty) return; + if (!tty) return 0; port = tty->driver_data; - if (!port) return; + if (!port) return 0; - if (! (port->flags & ASYNC_INITIALIZED)) return; + if (! (port->flags & ASYNC_INITIALIZED)) return 0; /* Take a lock on the serial tranmit buffer! */ mutex_lock(& port->port_write_mutex); @@ -68,7 +68,7 @@ void gs_put_char(struct tty_struct * tty, unsigned char ch) if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { /* Sorry, buffer is full, drop character. Update statistics???? -- REW */ mutex_unlock(&port->port_write_mutex); - return; + return 0; } port->xmit_buf[port->xmit_head++] = ch; @@ -77,6 +77,7 @@ void gs_put_char(struct tty_struct * tty, unsigned char ch) mutex_unlock(&port->port_write_mutex); func_exit (); + return 1; } @@ -586,8 +587,7 @@ void gs_close(struct tty_struct * tty, struct file * filp) port->flags &= ~GS_ACTIVE; - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + gs_flush_buffer(tty); tty_ldisc_flush(tty); tty->closing = 0; diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index 1399971be68..e7fb0bca366 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -308,7 +308,7 @@ static int hpet_mmap(struct file *file, struct vm_area_struct *vma) if (io_remap_pfn_range(vma, vma->vm_start, addr >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot)) { printk(KERN_ERR "%s: io_remap_pfn_range failed\n", - __FUNCTION__); + __func__); return -EAGAIN; } @@ -748,7 +748,7 @@ int hpet_alloc(struct hpet_data *hdp) */ if (hpet_is_known(hdp)) { printk(KERN_DEBUG "%s: duplicate HPET ignored\n", - __FUNCTION__); + __func__); return 0; } @@ -869,7 +869,7 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data) if (hpet_is_known(hdp)) { printk(KERN_DEBUG "%s: 0x%lx is busy\n", - __FUNCTION__, hdp->hd_phys_address); + __func__, hdp->hd_phys_address); iounmap(hdp->hd_address); return AE_ALREADY_EXISTS; } @@ -886,7 +886,7 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data) if (hpet_is_known(hdp)) { printk(KERN_DEBUG "%s: 0x%lx is busy\n", - __FUNCTION__, hdp->hd_phys_address); + __func__, hdp->hd_phys_address); iounmap(hdp->hd_address); return AE_ALREADY_EXISTS; } @@ -925,7 +925,7 @@ static int hpet_acpi_add(struct acpi_device *device) return -ENODEV; if (!data.hd_address || !data.hd_nirqs) { - printk("%s: no address or irqs in _CRS\n", __FUNCTION__); + printk("%s: no address or irqs in _CRS\n", __func__); return -ENODEV; } diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c index d5a752da322..59c6f9ab94e 100644 --- a/drivers/char/hvsi.c +++ b/drivers/char/hvsi.c @@ -246,7 +246,7 @@ static void compact_inbuf(struct hvsi_struct *hp, uint8_t *read_to) { int remaining = (int)(hp->inbuf_end - read_to); - pr_debug("%s: %i chars remain\n", __FUNCTION__, remaining); + pr_debug("%s: %i chars remain\n", __func__, remaining); if (read_to != hp->inbuf) memmove(hp->inbuf, read_to, remaining); @@ -365,7 +365,7 @@ static int hvsi_version_respond(struct hvsi_struct *hp, uint16_t query_seqno) packet.u.version = HVSI_VERSION; packet.query_seqno = query_seqno+1; - pr_debug("%s: sending %i bytes\n", __FUNCTION__, packet.len); + pr_debug("%s: sending %i bytes\n", __func__, packet.len); dbg_dump_hex((uint8_t*)&packet, packet.len); wrote = hvc_put_chars(hp->vtermno, (char *)&packet, packet.len); @@ -437,7 +437,7 @@ static struct tty_struct *hvsi_recv_data(struct hvsi_struct *hp, return NULL; if (overflow > 0) { - pr_debug("%s: got >TTY_THRESHOLD_THROTTLE bytes\n", __FUNCTION__); + pr_debug("%s: got >TTY_THRESHOLD_THROTTLE bytes\n", __func__); datalen = TTY_THRESHOLD_THROTTLE; } @@ -448,7 +448,7 @@ static struct tty_struct *hvsi_recv_data(struct hvsi_struct *hp, * we still have more data to deliver, so we need to save off the * overflow and send it later */ - pr_debug("%s: deferring overflow\n", __FUNCTION__); + pr_debug("%s: deferring overflow\n", __func__); memcpy(hp->throttle_buf, data + TTY_THRESHOLD_THROTTLE, overflow); hp->n_throttle = overflow; } @@ -474,11 +474,11 @@ static int hvsi_load_chunk(struct hvsi_struct *hp, struct tty_struct **flip, chunklen = hvsi_read(hp, hp->inbuf_end, HVSI_MAX_READ); if (chunklen == 0) { - pr_debug("%s: 0-length read\n", __FUNCTION__); + pr_debug("%s: 0-length read\n", __func__); return 0; } - pr_debug("%s: got %i bytes\n", __FUNCTION__, chunklen); + pr_debug("%s: got %i bytes\n", __func__, chunklen); dbg_dump_hex(hp->inbuf_end, chunklen); hp->inbuf_end += chunklen; @@ -495,7 +495,7 @@ static int hvsi_load_chunk(struct hvsi_struct *hp, struct tty_struct **flip, continue; } - pr_debug("%s: handling %i-byte packet\n", __FUNCTION__, + pr_debug("%s: handling %i-byte packet\n", __func__, len_packet(packet)); dbg_dump_packet(packet); @@ -526,7 +526,7 @@ static int hvsi_load_chunk(struct hvsi_struct *hp, struct tty_struct **flip, packet += len_packet(packet); if (*hangup || *handshake) { - pr_debug("%s: hangup or handshake\n", __FUNCTION__); + pr_debug("%s: hangup or handshake\n", __func__); /* * we need to send the hangup now before receiving any more data. * If we get "data, hangup, data", we can't deliver the second @@ -543,7 +543,7 @@ static int hvsi_load_chunk(struct hvsi_struct *hp, struct tty_struct **flip, static void hvsi_send_overflow(struct hvsi_struct *hp) { - pr_debug("%s: delivering %i bytes overflow\n", __FUNCTION__, + pr_debug("%s: delivering %i bytes overflow\n", __func__, hp->n_throttle); hvsi_insert_chars(hp, hp->throttle_buf, hp->n_throttle); @@ -563,7 +563,7 @@ static irqreturn_t hvsi_interrupt(int irq, void *arg) unsigned long flags; int again = 1; - pr_debug("%s\n", __FUNCTION__); + pr_debug("%s\n", __func__); while (again) { spin_lock_irqsave(&hp->lock, flags); @@ -647,7 +647,7 @@ static int hvsi_query(struct hvsi_struct *hp, uint16_t verb) packet.seqno = atomic_inc_return(&hp->seqno); packet.verb = verb; - pr_debug("%s: sending %i bytes\n", __FUNCTION__, packet.len); + pr_debug("%s: sending %i bytes\n", __func__, packet.len); dbg_dump_hex((uint8_t*)&packet, packet.len); wrote = hvc_put_chars(hp->vtermno, (char *)&packet, packet.len); @@ -674,7 +674,7 @@ static int hvsi_get_mctrl(struct hvsi_struct *hp) return ret; } - pr_debug("%s: mctrl 0x%x\n", __FUNCTION__, hp->mctrl); + pr_debug("%s: mctrl 0x%x\n", __func__, hp->mctrl); return 0; } @@ -694,7 +694,7 @@ static int hvsi_set_mctrl(struct hvsi_struct *hp, uint16_t mctrl) if (mctrl & TIOCM_DTR) packet.word = HVSI_TSDTR; - pr_debug("%s: sending %i bytes\n", __FUNCTION__, packet.len); + pr_debug("%s: sending %i bytes\n", __func__, packet.len); dbg_dump_hex((uint8_t*)&packet, packet.len); wrote = hvc_put_chars(hp->vtermno, (char *)&packet, packet.len); @@ -790,7 +790,7 @@ static void hvsi_close_protocol(struct hvsi_struct *hp) packet.len = 6; packet.verb = VSV_CLOSE_PROTOCOL; - pr_debug("%s: sending %i bytes\n", __FUNCTION__, packet.len); + pr_debug("%s: sending %i bytes\n", __func__, packet.len); dbg_dump_hex((uint8_t*)&packet, packet.len); hvc_put_chars(hp->vtermno, (char *)&packet, packet.len); @@ -803,7 +803,7 @@ static int hvsi_open(struct tty_struct *tty, struct file *filp) int line = tty->index; int ret; - pr_debug("%s\n", __FUNCTION__); + pr_debug("%s\n", __func__); if (line < 0 || line >= hvsi_count) return -ENODEV; @@ -868,7 +868,7 @@ static void hvsi_close(struct tty_struct *tty, struct file *filp) struct hvsi_struct *hp = tty->driver_data; unsigned long flags; - pr_debug("%s\n", __FUNCTION__); + pr_debug("%s\n", __func__); if (tty_hung_up_p(filp)) return; @@ -920,7 +920,7 @@ static void hvsi_hangup(struct tty_struct *tty) struct hvsi_struct *hp = tty->driver_data; unsigned long flags; - pr_debug("%s\n", __FUNCTION__); + pr_debug("%s\n", __func__); spin_lock_irqsave(&hp->lock, flags); @@ -942,7 +942,7 @@ static void hvsi_push(struct hvsi_struct *hp) n = hvsi_put_chars(hp, hp->outbuf, hp->n_outbuf); if (n > 0) { /* success */ - pr_debug("%s: wrote %i chars\n", __FUNCTION__, n); + pr_debug("%s: wrote %i chars\n", __func__, n); hp->n_outbuf = 0; } else if (n == -EIO) { __set_state(hp, HVSI_FSP_DIED); @@ -965,7 +965,7 @@ static void hvsi_write_worker(struct work_struct *work) spin_lock_irqsave(&hp->lock, flags); - pr_debug("%s: %i chars in buffer\n", __FUNCTION__, hp->n_outbuf); + pr_debug("%s: %i chars in buffer\n", __func__, hp->n_outbuf); if (!is_open(hp)) { /* @@ -983,7 +983,7 @@ static void hvsi_write_worker(struct work_struct *work) schedule_delayed_work(&hp->writer, 10); else { #ifdef DEBUG - pr_debug("%s: outbuf emptied after %li jiffies\n", __FUNCTION__, + pr_debug("%s: outbuf emptied after %li jiffies\n", __func__, jiffies - start_j); start_j = 0; #endif /* DEBUG */ @@ -1020,11 +1020,11 @@ static int hvsi_write(struct tty_struct *tty, spin_lock_irqsave(&hp->lock, flags); - pr_debug("%s: %i chars in buffer\n", __FUNCTION__, hp->n_outbuf); + pr_debug("%s: %i chars in buffer\n", __func__, hp->n_outbuf); if (!is_open(hp)) { /* we're either closing or not yet open; don't accept data */ - pr_debug("%s: not open\n", __FUNCTION__); + pr_debug("%s: not open\n", __func__); goto out; } @@ -1058,7 +1058,7 @@ out: spin_unlock_irqrestore(&hp->lock, flags); if (total != origcount) - pr_debug("%s: wanted %i, only wrote %i\n", __FUNCTION__, origcount, + pr_debug("%s: wanted %i, only wrote %i\n", __func__, origcount, total); return total; @@ -1072,7 +1072,7 @@ static void hvsi_throttle(struct tty_struct *tty) { struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data; - pr_debug("%s\n", __FUNCTION__); + pr_debug("%s\n", __func__); h_vio_signal(hp->vtermno, VIO_IRQ_DISABLE); } @@ -1083,7 +1083,7 @@ static void hvsi_unthrottle(struct tty_struct *tty) unsigned long flags; int shouldflip = 0; - pr_debug("%s\n", __FUNCTION__); + pr_debug("%s\n", __func__); spin_lock_irqsave(&hp->lock, flags); if (hp->n_throttle) { @@ -1302,7 +1302,7 @@ static int __init hvsi_console_init(void) hp->virq = irq_create_mapping(NULL, irq[0]); if (hp->virq == NO_IRQ) { printk(KERN_ERR "%s: couldn't create irq mapping for 0x%x\n", - __FUNCTION__, irq[0]); + __func__, irq[0]); continue; } diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c index 8609b8236c6..b60d425ce8d 100644 --- a/drivers/char/i8k.c +++ b/drivers/char/i8k.c @@ -77,11 +77,16 @@ static int power_status; module_param(power_status, bool, 0600); MODULE_PARM_DESC(power_status, "Report power status in /proc/i8k"); +static int fan_mult = I8K_FAN_MULT; +module_param(fan_mult, int, 0); +MODULE_PARM_DESC(fan_mult, "Factor to multiply fan speed with"); + static int i8k_open_fs(struct inode *inode, struct file *file); static int i8k_ioctl(struct inode *, struct file *, unsigned int, unsigned long); static const struct file_operations i8k_fops = { + .owner = THIS_MODULE, .open = i8k_open_fs, .read = seq_read, .llseek = seq_lseek, @@ -238,7 +243,7 @@ static int i8k_get_fan_speed(int fan) struct smm_regs regs = { .eax = I8K_SMM_GET_SPEED, }; regs.ebx = fan & 0xff; - return i8k_smm(®s) ? : (regs.eax & 0xffff) * I8K_FAN_MULT; + return i8k_smm(®s) ? : (regs.eax & 0xffff) * fan_mult; } /* @@ -554,13 +559,10 @@ static int __init i8k_init(void) return -ENODEV; /* Register the proc entry */ - proc_i8k = create_proc_entry("i8k", 0, NULL); + proc_i8k = proc_create("i8k", 0, NULL, &i8k_fops); if (!proc_i8k) return -ENOENT; - proc_i8k->proc_fops = &i8k_fops; - proc_i8k->owner = THIS_MODULE; - printk(KERN_INFO "Dell laptop SMM driver v%s Massimo Dal Zotto (dz@debian.org)\n", I8K_VERSION); diff --git a/drivers/char/ip2/i2ellis.c b/drivers/char/ip2/i2ellis.c index 61ef013b844..3601017f58c 100644 --- a/drivers/char/ip2/i2ellis.c +++ b/drivers/char/ip2/i2ellis.c @@ -53,7 +53,7 @@ static int ii2Safe; // Safe I/O address for delay routine static int iiDelayed; // Set when the iiResetDelay function is // called. Cleared when ANY board is reset. -static rwlock_t Dl_spinlock; +static DEFINE_RWLOCK(Dl_spinlock); //******** //* Code * @@ -82,7 +82,6 @@ static rwlock_t Dl_spinlock; static void iiEllisInit(void) { - LOCK_INIT(&Dl_spinlock); } //****************************************************************************** @@ -132,7 +131,7 @@ iiSetAddress( i2eBordStrPtr pB, int address, delayFunc_t delay ) || (address & 0x7) ) { - COMPLETE(pB,I2EE_BADADDR); + I2_COMPLETE(pB, I2EE_BADADDR); } // Initialize accelerators @@ -152,7 +151,7 @@ iiSetAddress( i2eBordStrPtr pB, int address, delayFunc_t delay ) pB->i2eValid = I2E_MAGIC; pB->i2eState = II_STATE_COLD; - COMPLETE(pB, I2EE_GOOD); + I2_COMPLETE(pB, I2EE_GOOD); } //****************************************************************************** @@ -177,12 +176,12 @@ iiReset(i2eBordStrPtr pB) // Magic number should be set, else even the address is suspect if (pB->i2eValid != I2E_MAGIC) { - COMPLETE(pB, I2EE_BADMAGIC); + I2_COMPLETE(pB, I2EE_BADMAGIC); } - OUTB(pB->i2eBase + FIFO_RESET, 0); // Any data will do + outb(0, pB->i2eBase + FIFO_RESET); /* Any data will do */ iiDelay(pB, 50); // Pause between resets - OUTB(pB->i2eBase + FIFO_RESET, 0); // Second reset + outb(0, pB->i2eBase + FIFO_RESET); /* Second reset */ // We must wait before even attempting to read anything from the FIFO: the // board's P.O.S.T may actually attempt to read and write its end of the @@ -203,7 +202,7 @@ iiReset(i2eBordStrPtr pB) // Ensure anything which would have been of use to standard loadware is // blanked out, since board has now forgotten everything!. - pB->i2eUsingIrq = IRQ_UNDEFINED; // Not set up to use an interrupt yet + pB->i2eUsingIrq = I2_IRQ_UNDEFINED; /* to not use an interrupt so far */ pB->i2eWaitingForEmptyFifo = 0; pB->i2eOutMailWaiting = 0; pB->i2eChannelPtr = NULL; @@ -215,7 +214,7 @@ iiReset(i2eBordStrPtr pB) pB->i2eFatalTrap = NULL; pB->i2eFatal = 0; - COMPLETE(pB, I2EE_GOOD); + I2_COMPLETE(pB, I2EE_GOOD); } //****************************************************************************** @@ -235,14 +234,14 @@ static int iiResetDelay(i2eBordStrPtr pB) { if (pB->i2eValid != I2E_MAGIC) { - COMPLETE(pB, I2EE_BADMAGIC); + I2_COMPLETE(pB, I2EE_BADMAGIC); } if (pB->i2eState != II_STATE_RESET) { - COMPLETE(pB, I2EE_BADSTATE); + I2_COMPLETE(pB, I2EE_BADSTATE); } iiDelay(pB,2000); /* Now we wait for two seconds. */ iiDelayed = 1; /* Delay has been called: ok to initialize */ - COMPLETE(pB, I2EE_GOOD); + I2_COMPLETE(pB, I2EE_GOOD); } //****************************************************************************** @@ -273,12 +272,12 @@ iiInitialize(i2eBordStrPtr pB) if (pB->i2eValid != I2E_MAGIC) { - COMPLETE(pB, I2EE_BADMAGIC); + I2_COMPLETE(pB, I2EE_BADMAGIC); } if (pB->i2eState != II_STATE_RESET || !iiDelayed) { - COMPLETE(pB, I2EE_BADSTATE); + I2_COMPLETE(pB, I2EE_BADSTATE); } // In case there is a failure short of our completely reading the power-up @@ -291,13 +290,12 @@ iiInitialize(i2eBordStrPtr pB) for (itemp = 0; itemp < sizeof(porStr); itemp++) { // We expect the entire message is ready. - if (HAS_NO_INPUT(pB)) - { + if (!I2_HAS_INPUT(pB)) { pB->i2ePomSize = itemp; - COMPLETE(pB, I2EE_PORM_SHORT); + I2_COMPLETE(pB, I2EE_PORM_SHORT); } - pB->i2ePom.c[itemp] = c = BYTE_FROM(pB); + pB->i2ePom.c[itemp] = c = inb(pB->i2eData); // We check the magic numbers as soon as they are supposed to be read // (rather than after) to minimize effect of reading something we @@ -306,22 +304,22 @@ iiInitialize(i2eBordStrPtr pB) (itemp == POR_2_INDEX && c != POR_MAGIC_2)) { pB->i2ePomSize = itemp+1; - COMPLETE(pB, I2EE_BADMAGIC); + I2_COMPLETE(pB, I2EE_BADMAGIC); } } pB->i2ePomSize = itemp; // Ensure that this was all the data... - if (HAS_INPUT(pB)) - COMPLETE(pB, I2EE_PORM_LONG); + if (I2_HAS_INPUT(pB)) + I2_COMPLETE(pB, I2EE_PORM_LONG); // For now, we'll fail to initialize if P.O.S.T reports bad chip mapper: // Implying we will not be able to download any code either: That's ok: the // condition is pretty explicit. if (pB->i2ePom.e.porDiag1 & POR_BAD_MAPPER) { - COMPLETE(pB, I2EE_POSTERR); + I2_COMPLETE(pB, I2EE_POSTERR); } // Determine anything which must be done differently depending on the family @@ -332,7 +330,7 @@ iiInitialize(i2eBordStrPtr pB) pB->i2eFifoStyle = FIFO_II; pB->i2eFifoSize = 512; // 512 bytes, always - pB->i2eDataWidth16 = NO; + pB->i2eDataWidth16 = false; pB->i2eMaxIrq = 15; // Because board cannot tell us it is in an 8-bit // slot, we do allow it to be done (documentation!) @@ -354,7 +352,7 @@ iiInitialize(i2eBordStrPtr pB) // should always be consistent for IntelliPort-II. Ditto below... if (pB->i2ePom.e.porPorts1 != 4) { - COMPLETE(pB, I2EE_INCONSIST); + I2_COMPLETE(pB, I2EE_INCONSIST); } break; @@ -364,7 +362,7 @@ iiInitialize(i2eBordStrPtr pB) pB->i2eChannelMap[0] = 0xff; // Eight port if (pB->i2ePom.e.porPorts1 != 8) { - COMPLETE(pB, I2EE_INCONSIST); + I2_COMPLETE(pB, I2EE_INCONSIST); } break; @@ -373,7 +371,7 @@ iiInitialize(i2eBordStrPtr pB) pB->i2eChannelMap[0] = 0x3f; // Six Port if (pB->i2ePom.e.porPorts1 != 6) { - COMPLETE(pB, I2EE_INCONSIST); + I2_COMPLETE(pB, I2EE_INCONSIST); } break; } @@ -402,7 +400,7 @@ iiInitialize(i2eBordStrPtr pB) if (itemp < 8 || itemp > 15) { - COMPLETE(pB, I2EE_INCONSIST); + I2_COMPLETE(pB, I2EE_INCONSIST); } pB->i2eFifoSize = (1 << itemp); @@ -450,26 +448,26 @@ iiInitialize(i2eBordStrPtr pB) switch (pB->i2ePom.e.porBus & (POR_BUS_SLOT16 | POR_BUS_DIP16) ) { case POR_BUS_SLOT16 | POR_BUS_DIP16: - pB->i2eDataWidth16 = YES; + pB->i2eDataWidth16 = true; pB->i2eMaxIrq = 15; break; case POR_BUS_SLOT16: - pB->i2eDataWidth16 = NO; + pB->i2eDataWidth16 = false; pB->i2eMaxIrq = 15; break; case 0: case POR_BUS_DIP16: // In an 8-bit slot, DIP switch don't care. default: - pB->i2eDataWidth16 = NO; + pB->i2eDataWidth16 = false; pB->i2eMaxIrq = 7; break; } break; // POR_ID_FIIEX case default: // Unknown type of board - COMPLETE(pB, I2EE_BAD_FAMILY); + I2_COMPLETE(pB, I2EE_BAD_FAMILY); break; } // End the switch based on family @@ -483,17 +481,14 @@ iiInitialize(i2eBordStrPtr pB) { case POR_BUS_T_ISA: case POR_BUS_T_UNK: // If the type of bus is undeclared, assume ok. - pB->i2eChangeIrq = YES; - break; case POR_BUS_T_MCA: case POR_BUS_T_EISA: - pB->i2eChangeIrq = NO; break; default: - COMPLETE(pB, I2EE_BADBUS); + I2_COMPLETE(pB, I2EE_BADBUS); } - if (pB->i2eDataWidth16 == YES) + if (pB->i2eDataWidth16) { pB->i2eWriteBuf = iiWriteBuf16; pB->i2eReadBuf = iiReadBuf16; @@ -529,7 +524,7 @@ iiInitialize(i2eBordStrPtr pB) break; default: - COMPLETE(pB, I2EE_INCONSIST); + I2_COMPLETE(pB, I2EE_INCONSIST); } // Initialize state information. @@ -549,7 +544,7 @@ iiInitialize(i2eBordStrPtr pB) // Everything is ok now, return with good status/ pB->i2eValid = I2E_MAGIC; - COMPLETE(pB, I2EE_GOOD); + I2_COMPLETE(pB, I2EE_GOOD); } //****************************************************************************** @@ -658,7 +653,7 @@ ii2DelayIO(unsigned int mseconds) while(mseconds--) { int i = ii2DelValue; while ( i-- ) { - INB ( ii2Safe ); + inb(ii2Safe); } } } @@ -709,11 +704,11 @@ iiWriteBuf16(i2eBordStrPtr pB, unsigned char *address, int count) { // Rudimentary sanity checking here. if (pB->i2eValid != I2E_MAGIC) - COMPLETE(pB, I2EE_INVALID); + I2_COMPLETE(pB, I2EE_INVALID); - OUTSW ( pB->i2eData, address, count); + I2_OUTSW(pB->i2eData, address, count); - COMPLETE(pB, I2EE_GOOD); + I2_COMPLETE(pB, I2EE_GOOD); } //****************************************************************************** @@ -738,11 +733,11 @@ iiWriteBuf8(i2eBordStrPtr pB, unsigned char *address, int count) { /* Rudimentary sanity checking here */ if (pB->i2eValid != I2E_MAGIC) - COMPLETE(pB, I2EE_INVALID); + I2_COMPLETE(pB, I2EE_INVALID); - OUTSB ( pB->i2eData, address, count ); + I2_OUTSB(pB->i2eData, address, count); - COMPLETE(pB, I2EE_GOOD); + I2_COMPLETE(pB, I2EE_GOOD); } //****************************************************************************** @@ -767,11 +762,11 @@ iiReadBuf16(i2eBordStrPtr pB, unsigned char *address, int count) { // Rudimentary sanity checking here. if (pB->i2eValid != I2E_MAGIC) - COMPLETE(pB, I2EE_INVALID); + I2_COMPLETE(pB, I2EE_INVALID); - INSW ( pB->i2eData, address, count); + I2_INSW(pB->i2eData, address, count); - COMPLETE(pB, I2EE_GOOD); + I2_COMPLETE(pB, I2EE_GOOD); } //****************************************************************************** @@ -796,11 +791,11 @@ iiReadBuf8(i2eBordStrPtr pB, unsigned char *address, int count) { // Rudimentary sanity checking here. if (pB->i2eValid != I2E_MAGIC) - COMPLETE(pB, I2EE_INVALID); + I2_COMPLETE(pB, I2EE_INVALID); - INSB ( pB->i2eData, address, count); + I2_INSB(pB->i2eData, address, count); - COMPLETE(pB, I2EE_GOOD); + I2_COMPLETE(pB, I2EE_GOOD); } //****************************************************************************** @@ -820,7 +815,7 @@ iiReadBuf8(i2eBordStrPtr pB, unsigned char *address, int count) static unsigned short iiReadWord16(i2eBordStrPtr pB) { - return (unsigned short)( INW(pB->i2eData) ); + return inw(pB->i2eData); } //****************************************************************************** @@ -842,9 +837,9 @@ iiReadWord8(i2eBordStrPtr pB) { unsigned short urs; - urs = INB ( pB->i2eData ); + urs = inb(pB->i2eData); - return ( ( INB ( pB->i2eData ) << 8 ) | urs ); + return (inb(pB->i2eData) << 8) | urs; } //****************************************************************************** @@ -865,7 +860,7 @@ iiReadWord8(i2eBordStrPtr pB) static void iiWriteWord16(i2eBordStrPtr pB, unsigned short value) { - WORD_TO(pB, (int)value); + outw((int)value, pB->i2eData); } //****************************************************************************** @@ -886,8 +881,8 @@ iiWriteWord16(i2eBordStrPtr pB, unsigned short value) static void iiWriteWord8(i2eBordStrPtr pB, unsigned short value) { - BYTE_TO(pB, (char)value); - BYTE_TO(pB, (char)(value >> 8) ); + outb((char)value, pB->i2eData); + outb((char)(value >> 8), pB->i2eData); } //****************************************************************************** @@ -939,30 +934,30 @@ iiWaitForTxEmptyII(i2eBordStrPtr pB, int mSdelay) // interrupts of any kind. - WRITE_LOCK_IRQSAVE(&Dl_spinlock,flags) - OUTB(pB->i2ePointer, SEL_COMMAND); - OUTB(pB->i2ePointer, SEL_CMD_SH); + write_lock_irqsave(&Dl_spinlock, flags); + outb(SEL_COMMAND, pB->i2ePointer); + outb(SEL_CMD_SH, pB->i2ePointer); - itemp = INB(pB->i2eStatus); + itemp = inb(pB->i2eStatus); - OUTB(pB->i2ePointer, SEL_COMMAND); - OUTB(pB->i2ePointer, SEL_CMD_UNSH); + outb(SEL_COMMAND, pB->i2ePointer); + outb(SEL_CMD_UNSH, pB->i2ePointer); if (itemp & ST_IN_EMPTY) { - UPDATE_FIFO_ROOM(pB); - WRITE_UNLOCK_IRQRESTORE(&Dl_spinlock,flags) - COMPLETE(pB, I2EE_GOOD); + I2_UPDATE_FIFO_ROOM(pB); + write_unlock_irqrestore(&Dl_spinlock, flags); + I2_COMPLETE(pB, I2EE_GOOD); } - WRITE_UNLOCK_IRQRESTORE(&Dl_spinlock,flags) + write_unlock_irqrestore(&Dl_spinlock, flags); if (mSdelay-- == 0) break; iiDelay(pB, 1); /* 1 mS granularity on checking condition */ } - COMPLETE(pB, I2EE_TXE_TIME); + I2_COMPLETE(pB, I2EE_TXE_TIME); } //****************************************************************************** @@ -1002,21 +997,21 @@ iiWaitForTxEmptyIIEX(i2eBordStrPtr pB, int mSdelay) // you will generally not want to service interrupts or in any way // disrupt the assumptions implicit in the larger context. - WRITE_LOCK_IRQSAVE(&Dl_spinlock,flags) + write_lock_irqsave(&Dl_spinlock, flags); - if (INB(pB->i2eStatus) & STE_OUT_MT) { - UPDATE_FIFO_ROOM(pB); - WRITE_UNLOCK_IRQRESTORE(&Dl_spinlock,flags) - COMPLETE(pB, I2EE_GOOD); + if (inb(pB->i2eStatus) & STE_OUT_MT) { + I2_UPDATE_FIFO_ROOM(pB); + write_unlock_irqrestore(&Dl_spinlock, flags); + I2_COMPLETE(pB, I2EE_GOOD); } - WRITE_UNLOCK_IRQRESTORE(&Dl_spinlock,flags) + write_unlock_irqrestore(&Dl_spinlock, flags); if (mSdelay-- == 0) break; iiDelay(pB, 1); // 1 mS granularity on checking condition } - COMPLETE(pB, I2EE_TXE_TIME); + I2_COMPLETE(pB, I2EE_TXE_TIME); } //****************************************************************************** @@ -1038,8 +1033,8 @@ static int iiTxMailEmptyII(i2eBordStrPtr pB) { int port = pB->i2ePointer; - OUTB ( port, SEL_OUTMAIL ); - return ( INB(port) == 0 ); + outb(SEL_OUTMAIL, port); + return inb(port) == 0; } //****************************************************************************** @@ -1060,7 +1055,7 @@ iiTxMailEmptyII(i2eBordStrPtr pB) static int iiTxMailEmptyIIEX(i2eBordStrPtr pB) { - return !(INB(pB->i2eStatus) & STE_OUT_MAIL); + return !(inb(pB->i2eStatus) & STE_OUT_MAIL); } //****************************************************************************** @@ -1084,10 +1079,10 @@ iiTrySendMailII(i2eBordStrPtr pB, unsigned char mail) { int port = pB->i2ePointer; - OUTB(port, SEL_OUTMAIL); - if (INB(port) == 0) { - OUTB(port, SEL_OUTMAIL); - OUTB(port, mail); + outb(SEL_OUTMAIL, port); + if (inb(port) == 0) { + outb(SEL_OUTMAIL, port); + outb(mail, port); return 1; } return 0; @@ -1112,10 +1107,9 @@ iiTrySendMailII(i2eBordStrPtr pB, unsigned char mail) static int iiTrySendMailIIEX(i2eBordStrPtr pB, unsigned char mail) { - if(INB(pB->i2eStatus) & STE_OUT_MAIL) { + if (inb(pB->i2eStatus) & STE_OUT_MAIL) return 0; - } - OUTB(pB->i2eXMail, mail); + outb(mail, pB->i2eXMail); return 1; } @@ -1136,9 +1130,9 @@ iiTrySendMailIIEX(i2eBordStrPtr pB, unsigned char mail) static unsigned short iiGetMailII(i2eBordStrPtr pB) { - if (HAS_MAIL(pB)) { - OUTB(pB->i2ePointer, SEL_INMAIL); - return INB(pB->i2ePointer); + if (I2_HAS_MAIL(pB)) { + outb(SEL_INMAIL, pB->i2ePointer); + return inb(pB->i2ePointer); } else { return NO_MAIL_HERE; } @@ -1161,11 +1155,10 @@ iiGetMailII(i2eBordStrPtr pB) static unsigned short iiGetMailIIEX(i2eBordStrPtr pB) { - if (HAS_MAIL(pB)) { - return INB(pB->i2eXMail); - } else { + if (I2_HAS_MAIL(pB)) + return inb(pB->i2eXMail); + else return NO_MAIL_HERE; - } } //****************************************************************************** @@ -1184,8 +1177,8 @@ iiGetMailIIEX(i2eBordStrPtr pB) static void iiEnableMailIrqII(i2eBordStrPtr pB) { - OUTB(pB->i2ePointer, SEL_MASK); - OUTB(pB->i2ePointer, ST_IN_MAIL); + outb(SEL_MASK, pB->i2ePointer); + outb(ST_IN_MAIL, pB->i2ePointer); } //****************************************************************************** @@ -1204,7 +1197,7 @@ iiEnableMailIrqII(i2eBordStrPtr pB) static void iiEnableMailIrqIIEX(i2eBordStrPtr pB) { - OUTB(pB->i2eXMask, MX_IN_MAIL); + outb(MX_IN_MAIL, pB->i2eXMask); } //****************************************************************************** @@ -1223,8 +1216,8 @@ iiEnableMailIrqIIEX(i2eBordStrPtr pB) static void iiWriteMaskII(i2eBordStrPtr pB, unsigned char value) { - OUTB(pB->i2ePointer, SEL_MASK); - OUTB(pB->i2ePointer, value); + outb(SEL_MASK, pB->i2ePointer); + outb(value, pB->i2ePointer); } //****************************************************************************** @@ -1243,7 +1236,7 @@ iiWriteMaskII(i2eBordStrPtr pB, unsigned char value) static void iiWriteMaskIIEX(i2eBordStrPtr pB, unsigned char value) { - OUTB(pB->i2eXMask, value); + outb(value, pB->i2eXMask); } //****************************************************************************** @@ -1354,9 +1347,8 @@ iiDownloadBlock ( i2eBordStrPtr pB, loadHdrStrPtr pSource, int isStandard) // immediately and be harmless, though not strictly necessary. itemp = MAX_DLOAD_ACK_TIME/10; while (--itemp) { - if (HAS_INPUT(pB)) { - switch(BYTE_FROM(pB)) - { + if (I2_HAS_INPUT(pB)) { + switch (inb(pB->i2eData)) { case LOADWARE_OK: pB->i2eState = isStandard ? II_STATE_STDLOADED :II_STATE_LOADED; diff --git a/drivers/char/ip2/i2ellis.h b/drivers/char/ip2/i2ellis.h index 433305062fb..c88a64e527a 100644 --- a/drivers/char/ip2/i2ellis.h +++ b/drivers/char/ip2/i2ellis.h @@ -185,10 +185,6 @@ typedef struct _i2eBordStr // The highest allowable IRQ, based on the // slot size. - unsigned char i2eChangeIrq; - // Whether tis valid to change IRQ's - // ISA = ok, EISA, MicroChannel, no - // Accelerators for various addresses on the board int i2eBase; // I/O Address of the Board int i2eData; // From here data transfers happen @@ -431,12 +427,6 @@ typedef struct _i2eBordStr // Manifests for i2eBordStr: //------------------------------------------- -#define YES 1 -#define NO 0 - -#define NULLFUNC (void (*)(void))0 -#define NULLPTR (void *)0 - typedef void (*delayFunc_t)(unsigned int); // i2eValid @@ -494,8 +484,8 @@ typedef void (*delayFunc_t)(unsigned int); // i2eUsingIrq // -#define IRQ_UNDEFINED 0x1352 // No valid irq (or polling = 0) can ever - // promote to this! +#define I2_IRQ_UNDEFINED 0x1352 /* No valid irq (or polling = 0) can + * ever promote to this! */ //------------------------------------------ // Handy Macros for i2ellis.c and others // Note these are common to -II and -IIEX @@ -504,41 +494,14 @@ typedef void (*delayFunc_t)(unsigned int); // Given a pointer to the board structure, does the input FIFO have any data or // not? // -#define HAS_INPUT(pB) !(INB(pB->i2eStatus) & ST_IN_EMPTY) -#define HAS_NO_INPUT(pB) (INB(pB->i2eStatus) & ST_IN_EMPTY) - -// Given a pointer to board structure, read a byte or word from the fifo -// -#define BYTE_FROM(pB) (unsigned char)INB(pB->i2eData) -#define WORD_FROM(pB) (unsigned short)INW(pB->i2eData) - -// Given a pointer to board structure, is there room for any data to be written -// to the data fifo? -// -#define HAS_OUTROOM(pB) !(INB(pB->i2eStatus) & ST_OUT_FULL) -#define HAS_NO_OUTROOM(pB) (INB(pB->i2eStatus) & ST_OUT_FULL) - -// Given a pointer to board structure, write a single byte to the fifo -// structure. Note that for 16-bit interfaces, the high order byte is undefined -// and unknown. -// -#define BYTE_TO(pB, c) OUTB(pB->i2eData,(c)) - -// Write a word to the fifo structure. For 8-bit interfaces, this may have -// unknown results. -// -#define WORD_TO(pB, c) OUTW(pB->i2eData,(c)) +#define I2_HAS_INPUT(pB) !(inb(pB->i2eStatus) & ST_IN_EMPTY) // Given a pointer to the board structure, is there anything in the incoming // mailbox? // -#define HAS_MAIL(pB) (INB(pB->i2eStatus) & ST_IN_MAIL) +#define I2_HAS_MAIL(pB) (inb(pB->i2eStatus) & ST_IN_MAIL) -#define UPDATE_FIFO_ROOM(pB) (pB)->i2eFifoRemains=(pB)->i2eFifoSize - -// Handy macro to round up a number (like the buffer write and read routines do) -// -#define ROUNDUP(number) (((number)+1) & (~1)) +#define I2_UPDATE_FIFO_ROOM(pB) ((pB)->i2eFifoRemains = (pB)->i2eFifoSize) //------------------------------------------ // Function Declarations for i2ellis.c @@ -593,20 +556,11 @@ static int iiDownloadBlock(i2eBordStrPtr, loadHdrStrPtr, int); // static int iiDownloadAll(i2eBordStrPtr, loadHdrStrPtr, int, int); -// Called indirectly always. Needed externally so the routine might be -// SPECIFIED as an argument to iiReset() -// -//static void ii2DelayIO(unsigned int); // N-millisecond delay using - //hardware spin -//static void ii2DelayTimer(unsigned int); // N-millisecond delay using Linux - //timer - // Many functions defined here return True if good, False otherwise, with an // error code in i2eError field. Here is a handy macro for setting the error // code and returning. // -#define COMPLETE(pB,code) \ - do { \ +#define I2_COMPLETE(pB,code) do { \ pB->i2eError = code; \ return (code == I2EE_GOOD);\ } while (0) diff --git a/drivers/char/ip2/i2hw.h b/drivers/char/ip2/i2hw.h index 15fe04e748f..8aa6e7ab8d5 100644 --- a/drivers/char/ip2/i2hw.h +++ b/drivers/char/ip2/i2hw.h @@ -129,7 +129,6 @@ registers, use byte operations only. //------------------------------------------------ // #include "ip2types.h" -#include "i2os.h" /* For any o.s., compiler, or host-related issues */ //------------------------------------------------------------------------- // Manifests for the I/O map: @@ -644,5 +643,10 @@ typedef union _loadHdrStr #define ABS_BIGGEST_BOX 16 // Absolute the most ports per box #define ABS_MOST_PORTS (ABS_MAX_BOXES * ABS_BIGGEST_BOX) +#define I2_OUTSW(port, addr, count) outsw((port), (addr), (((count)+1)/2)) +#define I2_OUTSB(port, addr, count) outsb((port), (addr), (((count)+1))&-2) +#define I2_INSW(port, addr, count) insw((port), (addr), (((count)+1)/2)) +#define I2_INSB(port, addr, count) insb((port), (addr), (((count)+1))&-2) + #endif // I2HW_H diff --git a/drivers/char/ip2/i2lib.c b/drivers/char/ip2/i2lib.c index 9c25320121e..938879cc7bc 100644 --- a/drivers/char/ip2/i2lib.c +++ b/drivers/char/ip2/i2lib.c @@ -227,17 +227,17 @@ i2InitChannels ( i2eBordStrPtr pB, int nChannels, i2ChanStrPtr pCh) i2ChanStrPtr *ppCh; if (pB->i2eValid != I2E_MAGIC) { - COMPLETE(pB, I2EE_BADMAGIC); + I2_COMPLETE(pB, I2EE_BADMAGIC); } if (pB->i2eState != II_STATE_STDLOADED) { - COMPLETE(pB, I2EE_BADSTATE); + I2_COMPLETE(pB, I2EE_BADSTATE); } - LOCK_INIT(&pB->read_fifo_spinlock); - LOCK_INIT(&pB->write_fifo_spinlock); - LOCK_INIT(&pB->Dbuf_spinlock); - LOCK_INIT(&pB->Bbuf_spinlock); - LOCK_INIT(&pB->Fbuf_spinlock); + rwlock_init(&pB->read_fifo_spinlock); + rwlock_init(&pB->write_fifo_spinlock); + rwlock_init(&pB->Dbuf_spinlock); + rwlock_init(&pB->Bbuf_spinlock); + rwlock_init(&pB->Fbuf_spinlock); // NO LOCK needed yet - this is init @@ -259,10 +259,10 @@ i2InitChannels ( i2eBordStrPtr pB, int nChannels, i2ChanStrPtr pCh) if ( !(pB->i2eChannelMap[index >> 4] & (1 << (index & 0xf)) ) ) { continue; } - LOCK_INIT(&pCh->Ibuf_spinlock); - LOCK_INIT(&pCh->Obuf_spinlock); - LOCK_INIT(&pCh->Cbuf_spinlock); - LOCK_INIT(&pCh->Pbuf_spinlock); + rwlock_init(&pCh->Ibuf_spinlock); + rwlock_init(&pCh->Obuf_spinlock); + rwlock_init(&pCh->Cbuf_spinlock); + rwlock_init(&pCh->Pbuf_spinlock); // NO LOCK needed yet - this is init // Set up validity flag according to support level if (pB->i2eGoodMap[index >> 4] & (1 << (index & 0xf)) ) { @@ -347,7 +347,7 @@ i2InitChannels ( i2eBordStrPtr pB, int nChannels, i2ChanStrPtr pCh) } // No need to check for wrap here; this is initialization. pB->i2Fbuf_stuff = stuffIndex; - COMPLETE(pB, I2EE_GOOD); + I2_COMPLETE(pB, I2EE_GOOD); } @@ -374,7 +374,7 @@ i2DeQueueNeeds(i2eBordStrPtr pB, int type) case NEED_INLINE: - WRITE_LOCK_IRQSAVE(&pB->Dbuf_spinlock,flags); + write_lock_irqsave(&pB->Dbuf_spinlock, flags); if ( pB->i2Dbuf_stuff != pB->i2Dbuf_strip) { queueIndex = pB->i2Dbuf_strip; @@ -386,12 +386,12 @@ i2DeQueueNeeds(i2eBordStrPtr pB, int type) pB->i2Dbuf_strip = queueIndex; pCh->channelNeeds &= ~NEED_INLINE; } - WRITE_UNLOCK_IRQRESTORE(&pB->Dbuf_spinlock,flags); + write_unlock_irqrestore(&pB->Dbuf_spinlock, flags); break; case NEED_BYPASS: - WRITE_LOCK_IRQSAVE(&pB->Bbuf_spinlock,flags); + write_lock_irqsave(&pB->Bbuf_spinlock, flags); if (pB->i2Bbuf_stuff != pB->i2Bbuf_strip) { queueIndex = pB->i2Bbuf_strip; @@ -403,12 +403,12 @@ i2DeQueueNeeds(i2eBordStrPtr pB, int type) pB->i2Bbuf_strip = queueIndex; pCh->channelNeeds &= ~NEED_BYPASS; } - WRITE_UNLOCK_IRQRESTORE(&pB->Bbuf_spinlock,flags); + write_unlock_irqrestore(&pB->Bbuf_spinlock, flags); break; case NEED_FLOW: - WRITE_LOCK_IRQSAVE(&pB->Fbuf_spinlock,flags); + write_lock_irqsave(&pB->Fbuf_spinlock, flags); if (pB->i2Fbuf_stuff != pB->i2Fbuf_strip) { queueIndex = pB->i2Fbuf_strip; @@ -420,7 +420,7 @@ i2DeQueueNeeds(i2eBordStrPtr pB, int type) pB->i2Fbuf_strip = queueIndex; pCh->channelNeeds &= ~NEED_FLOW; } - WRITE_UNLOCK_IRQRESTORE(&pB->Fbuf_spinlock,flags); + write_unlock_irqrestore(&pB->Fbuf_spinlock, flags); break; default: printk(KERN_ERR "i2DeQueueNeeds called with bad type:%x\n",type); @@ -453,7 +453,7 @@ i2QueueNeeds(i2eBordStrPtr pB, i2ChanStrPtr pCh, int type) case NEED_INLINE: - WRITE_LOCK_IRQSAVE(&pB->Dbuf_spinlock,flags); + write_lock_irqsave(&pB->Dbuf_spinlock, flags); if ( !(pCh->channelNeeds & NEED_INLINE) ) { pCh->channelNeeds |= NEED_INLINE; @@ -463,12 +463,12 @@ i2QueueNeeds(i2eBordStrPtr pB, i2ChanStrPtr pCh, int type) queueIndex = 0; pB->i2Dbuf_stuff = queueIndex; } - WRITE_UNLOCK_IRQRESTORE(&pB->Dbuf_spinlock,flags); + write_unlock_irqrestore(&pB->Dbuf_spinlock, flags); break; case NEED_BYPASS: - WRITE_LOCK_IRQSAVE(&pB->Bbuf_spinlock,flags); + write_lock_irqsave(&pB->Bbuf_spinlock, flags); if ((type & NEED_BYPASS) && !(pCh->channelNeeds & NEED_BYPASS)) { pCh->channelNeeds |= NEED_BYPASS; @@ -478,12 +478,12 @@ i2QueueNeeds(i2eBordStrPtr pB, i2ChanStrPtr pCh, int type) queueIndex = 0; pB->i2Bbuf_stuff = queueIndex; } - WRITE_UNLOCK_IRQRESTORE(&pB->Bbuf_spinlock,flags); + write_unlock_irqrestore(&pB->Bbuf_spinlock, flags); break; case NEED_FLOW: - WRITE_LOCK_IRQSAVE(&pB->Fbuf_spinlock,flags); + write_lock_irqsave(&pB->Fbuf_spinlock, flags); if ((type & NEED_FLOW) && !(pCh->channelNeeds & NEED_FLOW)) { pCh->channelNeeds |= NEED_FLOW; @@ -493,7 +493,7 @@ i2QueueNeeds(i2eBordStrPtr pB, i2ChanStrPtr pCh, int type) queueIndex = 0; pB->i2Fbuf_stuff = queueIndex; } - WRITE_UNLOCK_IRQRESTORE(&pB->Fbuf_spinlock,flags); + write_unlock_irqrestore(&pB->Fbuf_spinlock, flags); break; case NEED_CREDIT: @@ -562,9 +562,8 @@ i2QueueCommands(int type, i2ChanStrPtr pCh, int timeout, int nCommands, pB = pCh->pMyBord; // Board must also exist, and THE INTERRUPT COMMAND ALREADY SENT - if (pB->i2eValid != I2E_MAGIC || pB->i2eUsingIrq == IRQ_UNDEFINED) { + if (pB->i2eValid != I2E_MAGIC || pB->i2eUsingIrq == I2_IRQ_UNDEFINED) return -2; - } // If the board has gone fatal, return bad, and also hit the trap routine if // it exists. if (pB->i2eFatal) { @@ -620,13 +619,13 @@ i2QueueCommands(int type, i2ChanStrPtr pCh, int timeout, int nCommands, switch(type) { case PTYPE_INLINE: lock_var_p = &pCh->Obuf_spinlock; - WRITE_LOCK_IRQSAVE(lock_var_p,flags); + write_lock_irqsave(lock_var_p, flags); stuffIndex = pCh->Obuf_stuff; bufroom = pCh->Obuf_strip - stuffIndex; break; case PTYPE_BYPASS: lock_var_p = &pCh->Cbuf_spinlock; - WRITE_LOCK_IRQSAVE(lock_var_p,flags); + write_lock_irqsave(lock_var_p, flags); stuffIndex = pCh->Cbuf_stuff; bufroom = pCh->Cbuf_strip - stuffIndex; break; @@ -645,7 +644,7 @@ i2QueueCommands(int type, i2ChanStrPtr pCh, int timeout, int nCommands, break; /* from for()- Enough room: goto proceed */ } ip2trace(CHANN, ITRC_QUEUE, 3, 1, totalsize); - WRITE_UNLOCK_IRQRESTORE(lock_var_p, flags); + write_unlock_irqrestore(lock_var_p, flags); } else ip2trace(CHANN, ITRC_QUEUE, 3, 1, totalsize); @@ -747,7 +746,7 @@ i2QueueCommands(int type, i2ChanStrPtr pCh, int timeout, int nCommands, { case PTYPE_INLINE: pCh->Obuf_stuff = stuffIndex; // Store buffer pointer - WRITE_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Obuf_spinlock, flags); pB->debugInlineQueued++; // Add the channel pointer to list of channels needing service (first @@ -757,7 +756,7 @@ i2QueueCommands(int type, i2ChanStrPtr pCh, int timeout, int nCommands, case PTYPE_BYPASS: pCh->Cbuf_stuff = stuffIndex; // Store buffer pointer - WRITE_UNLOCK_IRQRESTORE(&pCh->Cbuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Cbuf_spinlock, flags); pB->debugBypassQueued++; // Add the channel pointer to list of channels needing service (first @@ -840,7 +839,7 @@ i2Input(i2ChanStrPtr pCh) count = -1; goto i2Input_exit; } - WRITE_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags); + write_lock_irqsave(&pCh->Ibuf_spinlock, flags); // initialize some accelerators and private copies stripIndex = pCh->Ibuf_strip; @@ -850,7 +849,7 @@ i2Input(i2ChanStrPtr pCh) // If buffer is empty or requested data count was 0, (trivial case) return // without any further thought. if ( count == 0 ) { - WRITE_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); goto i2Input_exit; } // Adjust for buffer wrap @@ -891,10 +890,10 @@ i2Input(i2ChanStrPtr pCh) if ((pCh->sinceLastFlow += count) >= pCh->whenSendFlow) { pCh->sinceLastFlow -= pCh->whenSendFlow; - WRITE_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); i2QueueNeeds(pCh->pMyBord, pCh, NEED_FLOW); } else { - WRITE_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); } i2Input_exit: @@ -926,7 +925,7 @@ i2InputFlush(i2ChanStrPtr pCh) ip2trace (CHANN, ITRC_INPUT, 10, 0); - WRITE_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags); + write_lock_irqsave(&pCh->Ibuf_spinlock, flags); count = pCh->Ibuf_stuff - pCh->Ibuf_strip; // Adjust for buffer wrap @@ -947,10 +946,10 @@ i2InputFlush(i2ChanStrPtr pCh) if ( (pCh->sinceLastFlow += count) >= pCh->whenSendFlow ) { pCh->sinceLastFlow -= pCh->whenSendFlow; - WRITE_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); i2QueueNeeds(pCh->pMyBord, pCh, NEED_FLOW); } else { - WRITE_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); } ip2trace (CHANN, ITRC_INPUT, 19, 1, count); @@ -979,9 +978,9 @@ i2InputAvailable(i2ChanStrPtr pCh) // initialize some accelerators and private copies - READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags); + read_lock_irqsave(&pCh->Ibuf_spinlock, flags); count = pCh->Ibuf_stuff - pCh->Ibuf_strip; - READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags); + read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); // Adjust for buffer wrap if (count < 0) @@ -1045,9 +1044,9 @@ i2Output(i2ChanStrPtr pCh, const char *pSource, int count) while ( count > 0 ) { // How much room in output buffer is there? - READ_LOCK_IRQSAVE(&pCh->Obuf_spinlock,flags); + read_lock_irqsave(&pCh->Obuf_spinlock, flags); amountToMove = pCh->Obuf_strip - pCh->Obuf_stuff - 1; - READ_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags); + read_unlock_irqrestore(&pCh->Obuf_spinlock, flags); if (amountToMove < 0) { amountToMove += OBUF_SIZE; } @@ -1075,7 +1074,7 @@ i2Output(i2ChanStrPtr pCh, const char *pSource, int count) if ( !(pCh->flush_flags && i2RetryFlushOutput(pCh) ) && amountToMove > 0 ) { - WRITE_LOCK_IRQSAVE(&pCh->Obuf_spinlock,flags); + write_lock_irqsave(&pCh->Obuf_spinlock, flags); stuffIndex = pCh->Obuf_stuff; // Had room to move some data: don't know whether the block size, @@ -1102,7 +1101,7 @@ i2Output(i2ChanStrPtr pCh, const char *pSource, int count) } pCh->Obuf_stuff = stuffIndex; - WRITE_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Obuf_spinlock, flags); ip2trace (CHANN, ITRC_OUTPUT, 13, 1, stuffIndex ); @@ -1352,9 +1351,9 @@ i2OutputFree(i2ChanStrPtr pCh) if ( !i2Validate ( pCh ) ) { return -1; } - READ_LOCK_IRQSAVE(&pCh->Obuf_spinlock,flags); + read_lock_irqsave(&pCh->Obuf_spinlock, flags); amountToMove = pCh->Obuf_strip - pCh->Obuf_stuff - 1; - READ_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags); + read_unlock_irqrestore(&pCh->Obuf_spinlock, flags); if (amountToMove < 0) { amountToMove += OBUF_SIZE; @@ -1464,11 +1463,11 @@ i2StripFifo(i2eBordStrPtr pB) // ip2trace (ITRC_NO_PORT, ITRC_SFIFO, ITRC_ENTER, 0 ); - while (HAS_INPUT(pB)) { + while (I2_HAS_INPUT(pB)) { // ip2trace (ITRC_NO_PORT, ITRC_SFIFO, 2, 0 ); // Process packet from fifo a one atomic unit - WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock,bflags); + write_lock_irqsave(&pB->read_fifo_spinlock, bflags); // The first word (or two bytes) will have channel number and type of // packet, possibly other information @@ -1490,7 +1489,8 @@ i2StripFifo(i2eBordStrPtr pB) // sick! if ( ((unsigned int)count) > IBUF_SIZE ) { pB->i2eFatal = 2; - WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock,bflags); + write_unlock_irqrestore(&pB->read_fifo_spinlock, + bflags); return; /* Bail out ASAP */ } // Channel is illegally big ? @@ -1498,7 +1498,8 @@ i2StripFifo(i2eBordStrPtr pB) (NULL==(pCh = ((i2ChanStrPtr*)pB->i2eChannelPtr)[channel]))) { iiReadBuf(pB, junkBuffer, count); - WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock,bflags); + write_unlock_irqrestore(&pB->read_fifo_spinlock, + bflags); break; /* From switch: ready for next packet */ } @@ -1512,14 +1513,15 @@ i2StripFifo(i2eBordStrPtr pB) if(ID_OF(pB->i2eLeadoffWord) == ID_HOT_KEY) { pCh->hotKeyIn = iiReadWord(pB) & 0xff; - WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock,bflags); + write_unlock_irqrestore(&pB->read_fifo_spinlock, + bflags); i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_HOTACK); break; /* From the switch: ready for next packet */ } // Normal data! We crudely assume there is room for the data in our // buffer because the board wouldn't have exceeded his credit limit. - WRITE_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,cflags); + write_lock_irqsave(&pCh->Ibuf_spinlock, cflags); // We have 2 locks now stuffIndex = pCh->Ibuf_stuff; amountToRead = IBUF_SIZE - stuffIndex; @@ -1562,8 +1564,9 @@ i2StripFifo(i2eBordStrPtr pB) // Update stuff index pCh->Ibuf_stuff = stuffIndex; - WRITE_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,cflags); - WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock,bflags); + write_unlock_irqrestore(&pCh->Ibuf_spinlock, cflags); + write_unlock_irqrestore(&pB->read_fifo_spinlock, + bflags); #ifdef USE_IQ schedule_work(&pCh->tqueue_input); @@ -1585,7 +1588,8 @@ i2StripFifo(i2eBordStrPtr pB) iiReadBuf(pB, cmdBuffer, count); // We can release early with buffer grab - WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock,bflags); + write_unlock_irqrestore(&pB->read_fifo_spinlock, + bflags); pc = cmdBuffer; pcLimit = &(cmdBuffer[count]); @@ -1830,12 +1834,12 @@ i2StripFifo(i2eBordStrPtr pB) default: // Neither packet? should be impossible ip2trace (ITRC_NO_PORT, ITRC_SFIFO, 5, 1, PTYPE_OF(pB->i2eLeadoffWord) ); - WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, + write_unlock_irqrestore(&pB->read_fifo_spinlock, bflags); break; } // End of switch on type of packets - } //while(board HAS_INPUT) + } /*while(board I2_HAS_INPUT)*/ ip2trace (ITRC_NO_PORT, ITRC_SFIFO, ITRC_RETURN, 0 ); @@ -1858,7 +1862,7 @@ i2Write2Fifo(i2eBordStrPtr pB, unsigned char *source, int count,int reserve) { int rc = 0; unsigned long flags; - WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); + write_lock_irqsave(&pB->write_fifo_spinlock, flags); if (!pB->i2eWaitingForEmptyFifo) { if (pB->i2eFifoRemains > (count+reserve)) { pB->i2eFifoRemains -= count; @@ -1867,7 +1871,7 @@ i2Write2Fifo(i2eBordStrPtr pB, unsigned char *source, int count,int reserve) rc = count; } } - WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); + write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); return rc; } //****************************************************************************** @@ -1898,7 +1902,7 @@ i2StuffFifoBypass(i2eBordStrPtr pB) while ( --bailout && notClogged && (NULL != (pCh = i2DeQueueNeeds(pB,NEED_BYPASS)))) { - WRITE_LOCK_IRQSAVE(&pCh->Cbuf_spinlock,flags); + write_lock_irqsave(&pCh->Cbuf_spinlock, flags); stripIndex = pCh->Cbuf_strip; // as long as there are packets for this channel... @@ -1906,7 +1910,7 @@ i2StuffFifoBypass(i2eBordStrPtr pB) while (stripIndex != pCh->Cbuf_stuff) { pRemove = &(pCh->Cbuf[stripIndex]); packetSize = CMD_COUNT_OF(pRemove) + sizeof(i2CmdHeader); - paddedSize = ROUNDUP(packetSize); + paddedSize = roundup(packetSize, 2); if (paddedSize > 0) { if ( 0 == i2Write2Fifo(pB, pRemove, paddedSize,0)) { @@ -1930,7 +1934,7 @@ WriteDBGBuf("BYPS", pRemove, paddedSize); // Done with this channel. Move to next, removing this one from // the queue of channels if we cleaned it out (i.e., didn't get clogged. pCh->Cbuf_strip = stripIndex; - WRITE_UNLOCK_IRQRESTORE(&pCh->Cbuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Cbuf_spinlock, flags); } // Either clogged or finished all the work #ifdef IP2DEBUG_TRACE @@ -1954,7 +1958,7 @@ static inline void i2StuffFifoFlow(i2eBordStrPtr pB) { i2ChanStrPtr pCh; - unsigned short paddedSize = ROUNDUP(sizeof(flowIn)); + unsigned short paddedSize = roundup(sizeof(flowIn), 2); ip2trace (ITRC_NO_PORT, ITRC_SFLOW, ITRC_ENTER, 2, pB->i2eFifoRemains, paddedSize ); @@ -2010,7 +2014,7 @@ i2StuffFifoInline(i2eBordStrPtr pB) while ( --bailout && notClogged && (NULL != (pCh = i2DeQueueNeeds(pB,NEED_INLINE))) ) { - WRITE_LOCK_IRQSAVE(&pCh->Obuf_spinlock,flags); + write_lock_irqsave(&pCh->Obuf_spinlock, flags); stripIndex = pCh->Obuf_strip; ip2trace (CHANN, ITRC_SICMD, 3, 2, stripIndex, pCh->Obuf_stuff ); @@ -2031,7 +2035,7 @@ i2StuffFifoInline(i2eBordStrPtr pB) packetSize = flowsize + sizeof(i2CmdHeader); } flowsize = CREDIT_USAGE(flowsize); - paddedSize = ROUNDUP(packetSize); + paddedSize = roundup(packetSize, 2); ip2trace (CHANN, ITRC_SICMD, 4, 2, pB->i2eFifoRemains, paddedSize ); @@ -2086,7 +2090,7 @@ WriteDBGBuf("DATA", pRemove, paddedSize); // Done with this channel. Move to next, removing this one from the // queue of channels if we cleaned it out (i.e., didn't get clogged. pCh->Obuf_strip = stripIndex; - WRITE_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Obuf_spinlock, flags); if ( notClogged ) { @@ -2190,10 +2194,11 @@ i2ServiceBoard ( i2eBordStrPtr pB ) if (inmail & MB_OUT_STRIPPED) { pB->i2eFifoOutInts++; - WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); + write_lock_irqsave(&pB->write_fifo_spinlock, flags); pB->i2eFifoRemains = pB->i2eFifoSize; pB->i2eWaitingForEmptyFifo = 0; - WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); + write_unlock_irqrestore(&pB->write_fifo_spinlock, + flags); ip2trace (ITRC_NO_PORT, ITRC_INTR, 30, 1, pB->i2eFifoRemains ); diff --git a/drivers/char/ip2/i2os.h b/drivers/char/ip2/i2os.h deleted file mode 100644 index eff9b542d69..00000000000 --- a/drivers/char/ip2/i2os.h +++ /dev/null @@ -1,127 +0,0 @@ -/******************************************************************************* -* -* (c) 1999 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Defines, definitions and includes which are heavily dependent -* on O/S, host, compiler, etc. This file is tailored for: -* Linux v2.0.0 and later -* Gnu gcc c2.7.2 -* 80x86 architecture -* -*******************************************************************************/ - -#ifndef I2OS_H /* To prevent multiple includes */ -#define I2OS_H 1 - -//------------------------------------------------- -// Required Includes -//------------------------------------------------- - -#include "ip2types.h" -#include <asm/io.h> /* For inb, etc */ - -//------------------------------------ -// Defines for I/O instructions: -//------------------------------------ - -#define INB(port) inb(port) -#define OUTB(port,value) outb((value),(port)) -#define INW(port) inw(port) -#define OUTW(port,value) outw((value),(port)) -#define OUTSW(port,addr,count) outsw((port),(addr),(((count)+1)/2)) -#define OUTSB(port,addr,count) outsb((port),(addr),(((count)+1))&-2) -#define INSW(port,addr,count) insw((port),(addr),(((count)+1)/2)) -#define INSB(port,addr,count) insb((port),(addr),(((count)+1))&-2) - -//-------------------------------------------- -// Interrupt control -//-------------------------------------------- - -#define LOCK_INIT(a) rwlock_init(a) - -#define SAVE_AND_DISABLE_INTS(a,b) { \ - /* printk("get_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \ - spin_lock_irqsave(a,b); \ -} - -#define RESTORE_INTS(a,b) { \ - /* printk("rel_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \ - spin_unlock_irqrestore(a,b); \ -} - -#define READ_LOCK_IRQSAVE(a,b) { \ - /* printk("get_read_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \ - read_lock_irqsave(a,b); \ -} - -#define READ_UNLOCK_IRQRESTORE(a,b) { \ - /* printk("rel_read_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \ - read_unlock_irqrestore(a,b); \ -} - -#define WRITE_LOCK_IRQSAVE(a,b) { \ - /* printk("get_write_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \ - write_lock_irqsave(a,b); \ -} - -#define WRITE_UNLOCK_IRQRESTORE(a,b) { \ - /* printk("rel_write_lock: 0x%x,%4d,%s\n",(int)a,__LINE__,__FILE__);*/ \ - write_unlock_irqrestore(a,b); \ -} - - -//------------------------------------------------------------------------------ -// Hardware-delay loop -// -// Probably used in only one place (see i2ellis.c) but this helps keep things -// together. Note we have unwound the IN instructions. On machines with a -// reasonable cache, the eight instructions (1 byte each) should fit in cache -// nicely, and on un-cached machines, the code-fetch would tend not to dominate. -// Note that cx is shifted so that "count" still reflects the total number of -// iterations assuming no unwinding. -//------------------------------------------------------------------------------ - -//#define DELAY1MS(port,count,label) - -//------------------------------------------------------------------------------ -// Macros to switch to a new stack, saving stack pointers, and to restore the -// old stack (Used, for example, in i2lib.c) "heap" is the address of some -// buffer which will become the new stack (working down from highest address). -// The two words at the two lowest addresses in this stack are for storing the -// SS and SP. -//------------------------------------------------------------------------------ - -//#define TO_NEW_STACK(heap,size) -//#define TO_OLD_STACK(heap) - -//------------------------------------------------------------------------------ -// Macros to save the original IRQ vectors and masks, and to patch in new ones. -//------------------------------------------------------------------------------ - -//#define SAVE_IRQ_MASKS(dest) -//#define WRITE_IRQ_MASKS(src) -//#define SAVE_IRQ_VECTOR(value,dest) -//#define WRITE_IRQ_VECTOR(value,src) - -//------------------------------------------------------------------------------ -// Macro to copy data from one far pointer to another. -//------------------------------------------------------------------------------ - -#define I2_MOVE_DATA(fpSource,fpDest,count) memmove(fpDest,fpSource,count); - -//------------------------------------------------------------------------------ -// Macros to issue eoi's to host interrupt control (IBM AT 8259-style). -//------------------------------------------------------------------------------ - -//#define MASTER_EOI -//#define SLAVE_EOI - -#endif /* I2OS_H */ - - diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c index b1d6cad8428..70957acaa96 100644 --- a/drivers/char/ip2/ip2main.c +++ b/drivers/char/ip2/ip2main.c @@ -133,8 +133,9 @@ *****************/ #include <linux/proc_fs.h> +#include <linux/seq_file.h> -static int ip2_read_procmem(char *, char **, off_t, int); +static const struct file_operations ip2mem_proc_fops; static int ip2_read_proc(char *, char **, off_t, int, int *, void * ); /********************/ @@ -168,7 +169,7 @@ static int Fip_firmware_size; static int ip2_open(PTTY, struct file *); static void ip2_close(PTTY, struct file *); static int ip2_write(PTTY, const unsigned char *, int); -static void ip2_putchar(PTTY, unsigned char); +static int ip2_putchar(PTTY, unsigned char); static void ip2_flush_chars(PTTY); static int ip2_write_room(PTTY); static int ip2_chars_in_buf(PTTY); @@ -354,14 +355,15 @@ have_requested_irq( char irq ) /* the driver initialisation function and returns what it returns. */ /******************************************************************************/ #ifdef MODULE -int -init_module(void) +static int __init +ip2_init_module(void) { #ifdef IP2DEBUG_INIT printk (KERN_DEBUG "Loading module ...\n" ); #endif return 0; } +module_init(ip2_init_module); #endif /* MODULE */ /******************************************************************************/ @@ -380,8 +382,8 @@ init_module(void) /* driver should be returned since it may be unloaded from memory. */ /******************************************************************************/ #ifdef MODULE -void -cleanup_module(void) +void __exit +ip2_cleanup_module(void) { int err; int i; @@ -423,7 +425,7 @@ cleanup_module(void) } put_tty_driver(ip2_tty_driver); unregister_chrdev(IP2_IPL_MAJOR, pcIpl); - remove_proc_entry("ip2mem", &proc_root); + remove_proc_entry("ip2mem", NULL); // free memory for (i = 0; i < IP2_MAX_BOARDS; i++) { @@ -451,6 +453,7 @@ cleanup_module(void) printk (KERN_DEBUG "IP2 Unloaded\n" ); #endif } +module_exit(ip2_cleanup_module); #endif /* MODULE */ static const struct tty_operations ip2_ops = { @@ -695,7 +698,7 @@ ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize) } } /* Register the read_procmem thing */ - if (!create_proc_info_entry("ip2mem",0,&proc_root,ip2_read_procmem)) { + if (!proc_create("ip2mem",0,NULL,&ip2mem_proc_fops)) { printk(KERN_ERR "IP2: failed to register read_procmem\n"); } else { @@ -1049,9 +1052,9 @@ set_irq( int boardnum, int boardIrq ) * Write to FIFO; don't bother to adjust fifo capacity for this, since * board will respond almost immediately after SendMail hit. */ - WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); + write_lock_irqsave(&pB->write_fifo_spinlock, flags); iiWriteBuf(pB, tempCommand, 4); - WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); + write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); pB->i2eUsingIrq = boardIrq; pB->i2eOutMailWaiting |= MB_OUT_STUFFED; @@ -1069,9 +1072,9 @@ set_irq( int boardnum, int boardIrq ) (CMD_OF(tempCommand))[4] = 64; // chars (CMD_OF(tempCommand))[5] = 87; // HW_TEST - WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); + write_lock_irqsave(&pB->write_fifo_spinlock, flags); iiWriteBuf(pB, tempCommand, 8); - WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); + write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); CHANNEL_OF(tempCommand) = 0; PTYPE_OF(tempCommand) = PTYPE_BYPASS; @@ -1086,9 +1089,9 @@ set_irq( int boardnum, int boardIrq ) CMD_COUNT_OF(tempCommand) = 2; (CMD_OF(tempCommand))[0] = 44; /* get ping */ (CMD_OF(tempCommand))[1] = 200; /* 200 ms */ - WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); + write_lock_irqsave(&pB->write_fifo_spinlock, flags); iiWriteBuf(pB, tempCommand, 4); - WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); + write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); #endif iiEnableMailIrq(pB); @@ -1267,12 +1270,12 @@ static void do_input(struct work_struct *work) // Data input if ( pCh->pTTY != NULL ) { - READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags) + read_lock_irqsave(&pCh->Ibuf_spinlock, flags); if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) { - READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) + read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); i2Input( pCh ); } else - READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) + read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); } else { ip2trace(CHANN, ITRC_INPUT, 22, 0 ); @@ -1613,10 +1616,8 @@ ip2_close( PTTY tty, struct file *pFile ) serviceOutgoingFifo ( pCh->pMyBord ); - if ( tty->driver->flush_buffer ) - tty->driver->flush_buffer(tty); - if ( tty->ldisc.flush_buffer ) - tty->ldisc.flush_buffer(tty); + tty_ldisc_flush(tty); + tty_driver_flush_buffer(tty); tty->closing = 0; pCh->pTTY = NULL; @@ -1716,9 +1717,9 @@ ip2_write( PTTY tty, const unsigned char *pData, int count) ip2_flush_chars( tty ); /* This is the actual move bit. Make sure it does what we need!!!!! */ - WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); + write_lock_irqsave(&pCh->Pbuf_spinlock, flags); bytesSent = i2Output( pCh, pData, count); - WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent ); @@ -1735,7 +1736,7 @@ ip2_write( PTTY tty, const unsigned char *pData, int count) /* */ /* */ /******************************************************************************/ -static void +static int ip2_putchar( PTTY tty, unsigned char ch ) { i2ChanStrPtr pCh = tty->driver_data; @@ -1743,13 +1744,14 @@ ip2_putchar( PTTY tty, unsigned char ch ) // ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch ); - WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); + write_lock_irqsave(&pCh->Pbuf_spinlock, flags); pCh->Pbuf[pCh->Pbuf_stuff++] = ch; if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) { - WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); ip2_flush_chars( tty ); } else - WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); + return 1; // ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch ); } @@ -1769,7 +1771,7 @@ ip2_flush_chars( PTTY tty ) i2ChanStrPtr pCh = tty->driver_data; unsigned long flags; - WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); + write_lock_irqsave(&pCh->Pbuf_spinlock, flags); if ( pCh->Pbuf_stuff ) { // ip2trace (CHANN, ITRC_PUTC, 10, 1, strip ); @@ -1783,7 +1785,7 @@ ip2_flush_chars( PTTY tty ) } pCh->Pbuf_stuff -= strip; } - WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); } /******************************************************************************/ @@ -1801,9 +1803,9 @@ ip2_write_room ( PTTY tty ) i2ChanStrPtr pCh = tty->driver_data; unsigned long flags; - READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); + read_lock_irqsave(&pCh->Pbuf_spinlock, flags); bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff; - READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); + read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree ); @@ -1833,12 +1835,12 @@ ip2_chars_in_buf ( PTTY tty ) pCh->Obuf_char_count + pCh->Pbuf_stuff, pCh->Obuf_char_count, pCh->Pbuf_stuff ); #endif - READ_LOCK_IRQSAVE(&pCh->Obuf_spinlock,flags); + read_lock_irqsave(&pCh->Obuf_spinlock, flags); rc = pCh->Obuf_char_count; - READ_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags); - READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); + read_unlock_irqrestore(&pCh->Obuf_spinlock, flags); + read_lock_irqsave(&pCh->Pbuf_spinlock, flags); rc += pCh->Pbuf_stuff; - READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); + read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); return rc; } @@ -1862,9 +1864,9 @@ ip2_flush_buffer( PTTY tty ) #ifdef IP2DEBUG_WRITE printk (KERN_DEBUG "IP2: flush buffer\n" ); #endif - WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); + write_lock_irqsave(&pCh->Pbuf_spinlock, flags); pCh->Pbuf_stuff = 0; - WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); + write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); i2FlushOutput( pCh ); ip2_owake(tty); @@ -1950,15 +1952,15 @@ ip2_unthrottle ( PTTY tty ) pCh->throttled = 0; i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); serviceOutgoingFifo( pCh->pMyBord ); - READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags) + read_lock_irqsave(&pCh->Ibuf_spinlock, flags); if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) { - READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) + read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); #ifdef IP2DEBUG_READ printk (KERN_DEBUG "i2Input called from unthrottle\n" ); #endif i2Input( pCh ); } else - READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) + read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); } static void @@ -2201,9 +2203,9 @@ ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg ) * for masking). Caller should use TIOCGICOUNT to see which one it was */ case TIOCMIWAIT: - WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags); + write_lock_irqsave(&pB->read_fifo_spinlock, flags); cprev = pCh->icount; /* note the counters on entry */ - WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags); + write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4, CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP); init_waitqueue_entry(&wait, current); @@ -2223,9 +2225,9 @@ ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg ) rc = -ERESTARTSYS; break; } - WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags); + write_lock_irqsave(&pB->read_fifo_spinlock, flags); cnow = pCh->icount; /* atomic copy */ - WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags); + write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { rc = -EIO; /* no change => rc */ @@ -2263,9 +2265,9 @@ ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg ) case TIOCGICOUNT: ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc ); - WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags); + write_lock_irqsave(&pB->read_fifo_spinlock, flags); cnow = pCh->icount; - WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags); + write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); p_cuser = argp; rc = put_user(cnow.cts, &p_cuser->cts); rc = put_user(cnow.dsr, &p_cuser->dsr); @@ -2871,7 +2873,7 @@ ip2_ipl_ioctl ( struct inode *pInode, struct file *pFile, UINT cmd, ULONG arg ) case 65: /* Board - ip2stat */ if ( pB ) { rc = copy_to_user(argp, pB, sizeof(i2eBordStr)); - rc = put_user(INB(pB->i2eStatus), + rc = put_user(inb(pB->i2eStatus), (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) ); } else { rc = -ENODEV; @@ -2967,65 +2969,61 @@ ip2_ipl_open( struct inode *pInode, struct file *pFile ) } return 0; } -/******************************************************************************/ -/* Function: ip2_read_procmem */ -/* Parameters: */ -/* */ -/* Returns: Length of output */ -/* */ -/* Description: */ -/* Supplies some driver operating parameters */ -/* Not real useful unless your debugging the fifo */ -/* */ -/******************************************************************************/ - -#define LIMIT (PAGE_SIZE - 120) static int -ip2_read_procmem(char *buf, char **start, off_t offset, int len) +proc_ip2mem_show(struct seq_file *m, void *v) { i2eBordStrPtr pB; i2ChanStrPtr pCh; PTTY tty; int i; - len = 0; - #define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n" #define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n" #define FMTLIN3 " 0x%04x 0x%04x rc flow\n" - len += sprintf(buf+len,"\n"); + seq_printf(m,"\n"); for( i = 0; i < IP2_MAX_BOARDS; ++i ) { pB = i2BoardPtrTable[i]; if ( pB ) { - len += sprintf(buf+len,"board %d:\n",i); - len += sprintf(buf+len,"\tFifo rem: %d mty: %x outM %x\n", + seq_printf(m,"board %d:\n",i); + seq_printf(m,"\tFifo rem: %d mty: %x outM %x\n", pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting); } } - len += sprintf(buf+len,"#: tty flags, port flags, cflags, iflags\n"); + seq_printf(m,"#: tty flags, port flags, cflags, iflags\n"); for (i=0; i < IP2_MAX_PORTS; i++) { - if (len > LIMIT) - break; pCh = DevTable[i]; if (pCh) { tty = pCh->pTTY; if (tty && tty->count) { - len += sprintf(buf+len,FMTLINE,i,(int)tty->flags,pCh->flags, + seq_printf(m,FMTLINE,i,(int)tty->flags,pCh->flags, tty->termios->c_cflag,tty->termios->c_iflag); - len += sprintf(buf+len,FMTLIN2, + seq_printf(m,FMTLIN2, pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds); - len += sprintf(buf+len,FMTLIN3,pCh->infl.asof,pCh->infl.room); + seq_printf(m,FMTLIN3,pCh->infl.asof,pCh->infl.room); } } } - return len; + return 0; +} + +static int proc_ip2mem_open(struct inode *inode, struct file *file) +{ + return single_open(file, proc_ip2mem_show, NULL); } +static const struct file_operations ip2mem_proc_fops = { + .owner = THIS_MODULE, + .open = proc_ip2mem_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + /* * This is the handler for /proc/tty/driver/ip2 * diff --git a/drivers/char/ipmi/Makefile b/drivers/char/ipmi/Makefile index 553f0a408ed..eb8a1a8c188 100644 --- a/drivers/char/ipmi/Makefile +++ b/drivers/char/ipmi/Makefile @@ -9,7 +9,3 @@ obj-$(CONFIG_IPMI_DEVICE_INTERFACE) += ipmi_devintf.o obj-$(CONFIG_IPMI_SI) += ipmi_si.o obj-$(CONFIG_IPMI_WATCHDOG) += ipmi_watchdog.o obj-$(CONFIG_IPMI_POWEROFF) += ipmi_poweroff.o - -ipmi_si.o: $(ipmi_si-objs) - $(LD) -r -o $@ $(ipmi_si-objs) - diff --git a/drivers/char/ipmi/ipmi_bt_sm.c b/drivers/char/ipmi/ipmi_bt_sm.c index e736119b649..7b98c067190 100644 --- a/drivers/char/ipmi/ipmi_bt_sm.c +++ b/drivers/char/ipmi/ipmi_bt_sm.c @@ -37,26 +37,32 @@ #define BT_DEBUG_ENABLE 1 /* Generic messages */ #define BT_DEBUG_MSG 2 /* Prints all request/response buffers */ #define BT_DEBUG_STATES 4 /* Verbose look at state changes */ -/* BT_DEBUG_OFF must be zero to correspond to the default uninitialized - value */ +/* + * BT_DEBUG_OFF must be zero to correspond to the default uninitialized + * value + */ static int bt_debug; /* 0 == BT_DEBUG_OFF */ module_param(bt_debug, int, 0644); MODULE_PARM_DESC(bt_debug, "debug bitmask, 1=enable, 2=messages, 4=states"); -/* Typical "Get BT Capabilities" values are 2-3 retries, 5-10 seconds, - and 64 byte buffers. However, one HP implementation wants 255 bytes of - buffer (with a documented message of 160 bytes) so go for the max. - Since the Open IPMI architecture is single-message oriented at this - stage, the queue depth of BT is of no concern. */ +/* + * Typical "Get BT Capabilities" values are 2-3 retries, 5-10 seconds, + * and 64 byte buffers. However, one HP implementation wants 255 bytes of + * buffer (with a documented message of 160 bytes) so go for the max. + * Since the Open IPMI architecture is single-message oriented at this + * stage, the queue depth of BT is of no concern. + */ #define BT_NORMAL_TIMEOUT 5 /* seconds */ #define BT_NORMAL_RETRY_LIMIT 2 #define BT_RESET_DELAY 6 /* seconds after warm reset */ -/* States are written in chronological order and usually cover - multiple rows of the state table discussion in the IPMI spec. */ +/* + * States are written in chronological order and usually cover + * multiple rows of the state table discussion in the IPMI spec. + */ enum bt_states { BT_STATE_IDLE = 0, /* Order is critical in this list */ @@ -76,10 +82,12 @@ enum bt_states { BT_STATE_LONG_BUSY /* BT doesn't get hosed :-) */ }; -/* Macros seen at the end of state "case" blocks. They help with legibility - and debugging. */ +/* + * Macros seen at the end of state "case" blocks. They help with legibility + * and debugging. + */ -#define BT_STATE_CHANGE(X,Y) { bt->state = X; return Y; } +#define BT_STATE_CHANGE(X, Y) { bt->state = X; return Y; } #define BT_SI_SM_RETURN(Y) { last_printed = BT_STATE_PRINTME; return Y; } @@ -110,11 +118,13 @@ struct si_sm_data { #define BT_H_BUSY 0x40 #define BT_B_BUSY 0x80 -/* Some bits are toggled on each write: write once to set it, once - more to clear it; writing a zero does nothing. To absolutely - clear it, check its state and write if set. This avoids the "get - current then use as mask" scheme to modify one bit. Note that the - variable "bt" is hardcoded into these macros. */ +/* + * Some bits are toggled on each write: write once to set it, once + * more to clear it; writing a zero does nothing. To absolutely + * clear it, check its state and write if set. This avoids the "get + * current then use as mask" scheme to modify one bit. Note that the + * variable "bt" is hardcoded into these macros. + */ #define BT_STATUS bt->io->inputb(bt->io, 0) #define BT_CONTROL(x) bt->io->outputb(bt->io, 0, x) @@ -125,8 +135,10 @@ struct si_sm_data { #define BT_INTMASK_R bt->io->inputb(bt->io, 2) #define BT_INTMASK_W(x) bt->io->outputb(bt->io, 2, x) -/* Convenience routines for debugging. These are not multi-open safe! - Note the macros have hardcoded variables in them. */ +/* + * Convenience routines for debugging. These are not multi-open safe! + * Note the macros have hardcoded variables in them. + */ static char *state2txt(unsigned char state) { @@ -182,7 +194,8 @@ static char *status2txt(unsigned char status) static unsigned int bt_init_data(struct si_sm_data *bt, struct si_sm_io *io) { memset(bt, 0, sizeof(struct si_sm_data)); - if (bt->io != io) { /* external: one-time only things */ + if (bt->io != io) { + /* external: one-time only things */ bt->io = io; bt->seq = 0; } @@ -229,7 +242,7 @@ static int bt_start_transaction(struct si_sm_data *bt, printk(KERN_WARNING "BT: +++++++++++++++++ New command\n"); printk(KERN_WARNING "BT: NetFn/LUN CMD [%d data]:", size - 2); for (i = 0; i < size; i ++) - printk (" %02x", data[i]); + printk(" %02x", data[i]); printk("\n"); } bt->write_data[0] = size + 1; /* all data plus seq byte */ @@ -246,8 +259,10 @@ static int bt_start_transaction(struct si_sm_data *bt, return 0; } -/* After the upper state machine has been told SI_SM_TRANSACTION_COMPLETE - it calls this. Strip out the length and seq bytes. */ +/* + * After the upper state machine has been told SI_SM_TRANSACTION_COMPLETE + * it calls this. Strip out the length and seq bytes. + */ static int bt_get_result(struct si_sm_data *bt, unsigned char *data, @@ -269,10 +284,10 @@ static int bt_get_result(struct si_sm_data *bt, memcpy(data + 2, bt->read_data + 4, msg_len - 2); if (bt_debug & BT_DEBUG_MSG) { - printk (KERN_WARNING "BT: result %d bytes:", msg_len); + printk(KERN_WARNING "BT: result %d bytes:", msg_len); for (i = 0; i < msg_len; i++) printk(" %02x", data[i]); - printk ("\n"); + printk("\n"); } return msg_len; } @@ -292,8 +307,10 @@ static void reset_flags(struct si_sm_data *bt) BT_INTMASK_W(BT_BMC_HWRST); } -/* Get rid of an unwanted/stale response. This should only be needed for - BMCs that support multiple outstanding requests. */ +/* + * Get rid of an unwanted/stale response. This should only be needed for + * BMCs that support multiple outstanding requests. + */ static void drain_BMC2HOST(struct si_sm_data *bt) { @@ -326,8 +343,8 @@ static inline void write_all_bytes(struct si_sm_data *bt) printk(KERN_WARNING "BT: write %d bytes seq=0x%02X", bt->write_count, bt->seq); for (i = 0; i < bt->write_count; i++) - printk (" %02x", bt->write_data[i]); - printk ("\n"); + printk(" %02x", bt->write_data[i]); + printk("\n"); } for (i = 0; i < bt->write_count; i++) HOST2BMC(bt->write_data[i]); @@ -337,8 +354,10 @@ static inline int read_all_bytes(struct si_sm_data *bt) { unsigned char i; - /* length is "framing info", minimum = 4: NetFn, Seq, Cmd, cCode. - Keep layout of first four bytes aligned with write_data[] */ + /* + * length is "framing info", minimum = 4: NetFn, Seq, Cmd, cCode. + * Keep layout of first four bytes aligned with write_data[] + */ bt->read_data[0] = BMC2HOST; bt->read_count = bt->read_data[0]; @@ -362,8 +381,8 @@ static inline int read_all_bytes(struct si_sm_data *bt) if (max > 16) max = 16; for (i = 0; i < max; i++) - printk (" %02x", bt->read_data[i]); - printk ("%s\n", bt->read_count == max ? "" : " ..."); + printk(KERN_CONT " %02x", bt->read_data[i]); + printk(KERN_CONT "%s\n", bt->read_count == max ? "" : " ..."); } /* per the spec, the (NetFn[1], Seq[2], Cmd[3]) tuples must match */ @@ -402,8 +421,10 @@ static enum si_sm_result error_recovery(struct si_sm_data *bt, printk(KERN_WARNING "IPMI BT: %s in %s %s ", /* open-ended line */ reason, STATE2TXT, STATUS2TXT); - /* Per the IPMI spec, retries are based on the sequence number - known only to this module, so manage a restart here. */ + /* + * Per the IPMI spec, retries are based on the sequence number + * known only to this module, so manage a restart here. + */ (bt->error_retries)++; if (bt->error_retries < bt->BT_CAP_retries) { printk("%d retries left\n", @@ -412,8 +433,8 @@ static enum si_sm_result error_recovery(struct si_sm_data *bt, return SI_SM_CALL_WITHOUT_DELAY; } - printk("failed %d retries, sending error response\n", - bt->BT_CAP_retries); + printk(KERN_WARNING "failed %d retries, sending error response\n", + bt->BT_CAP_retries); if (!bt->nonzero_status) printk(KERN_ERR "IPMI BT: stuck, try power cycle\n"); @@ -424,8 +445,10 @@ static enum si_sm_result error_recovery(struct si_sm_data *bt, return SI_SM_CALL_WITHOUT_DELAY; } - /* Concoct a useful error message, set up the next state, and - be done with this sequence. */ + /* + * Concoct a useful error message, set up the next state, and + * be done with this sequence. + */ bt->state = BT_STATE_IDLE; switch (cCode) { @@ -461,10 +484,12 @@ static enum si_sm_result bt_event(struct si_sm_data *bt, long time) last_printed = bt->state; } - /* Commands that time out may still (eventually) provide a response. - This stale response will get in the way of a new response so remove - it if possible (hopefully during IDLE). Even if it comes up later - it will be rejected by its (now-forgotten) seq number. */ + /* + * Commands that time out may still (eventually) provide a response. + * This stale response will get in the way of a new response so remove + * it if possible (hopefully during IDLE). Even if it comes up later + * it will be rejected by its (now-forgotten) seq number. + */ if ((bt->state < BT_STATE_WRITE_BYTES) && (status & BT_B2H_ATN)) { drain_BMC2HOST(bt); @@ -472,7 +497,8 @@ static enum si_sm_result bt_event(struct si_sm_data *bt, long time) } if ((bt->state != BT_STATE_IDLE) && - (bt->state < BT_STATE_PRINTME)) { /* check timeout */ + (bt->state < BT_STATE_PRINTME)) { + /* check timeout */ bt->timeout -= time; if ((bt->timeout < 0) && (bt->state < BT_STATE_RESET1)) return error_recovery(bt, @@ -482,8 +508,10 @@ static enum si_sm_result bt_event(struct si_sm_data *bt, long time) switch (bt->state) { - /* Idle state first checks for asynchronous messages from another - channel, then does some opportunistic housekeeping. */ + /* + * Idle state first checks for asynchronous messages from another + * channel, then does some opportunistic housekeeping. + */ case BT_STATE_IDLE: if (status & BT_SMS_ATN) { @@ -531,16 +559,19 @@ static enum si_sm_result bt_event(struct si_sm_data *bt, long time) BT_SI_SM_RETURN(SI_SM_CALL_WITH_DELAY); BT_CONTROL(BT_H_BUSY); /* set */ - /* Uncached, ordered writes should just proceeed serially but - some BMCs don't clear B2H_ATN with one hit. Fast-path a - workaround without too much penalty to the general case. */ + /* + * Uncached, ordered writes should just proceeed serially but + * some BMCs don't clear B2H_ATN with one hit. Fast-path a + * workaround without too much penalty to the general case. + */ BT_CONTROL(BT_B2H_ATN); /* clear it to ACK the BMC */ BT_STATE_CHANGE(BT_STATE_CLEAR_B2H, SI_SM_CALL_WITHOUT_DELAY); case BT_STATE_CLEAR_B2H: - if (status & BT_B2H_ATN) { /* keep hitting it */ + if (status & BT_B2H_ATN) { + /* keep hitting it */ BT_CONTROL(BT_B2H_ATN); BT_SI_SM_RETURN(SI_SM_CALL_WITH_DELAY); } @@ -548,7 +579,8 @@ static enum si_sm_result bt_event(struct si_sm_data *bt, long time) SI_SM_CALL_WITHOUT_DELAY); case BT_STATE_READ_BYTES: - if (!(status & BT_H_BUSY)) /* check in case of retry */ + if (!(status & BT_H_BUSY)) + /* check in case of retry */ BT_CONTROL(BT_H_BUSY); BT_CONTROL(BT_CLR_RD_PTR); /* start of BMC2HOST buffer */ i = read_all_bytes(bt); /* true == packet seq match */ @@ -599,8 +631,10 @@ static enum si_sm_result bt_event(struct si_sm_data *bt, long time) BT_STATE_CHANGE(BT_STATE_XACTION_START, SI_SM_CALL_WITH_DELAY); - /* Get BT Capabilities, using timing of upper level state machine. - Set outreqs to prevent infinite loop on timeout. */ + /* + * Get BT Capabilities, using timing of upper level state machine. + * Set outreqs to prevent infinite loop on timeout. + */ case BT_STATE_CAPABILITIES_BEGIN: bt->BT_CAP_outreqs = 1; { @@ -638,10 +672,12 @@ static enum si_sm_result bt_event(struct si_sm_data *bt, long time) static int bt_detect(struct si_sm_data *bt) { - /* It's impossible for the BT status and interrupt registers to be - all 1's, (assuming a properly functioning, self-initialized BMC) - but that's what you get from reading a bogus address, so we - test that first. The calling routine uses negative logic. */ + /* + * It's impossible for the BT status and interrupt registers to be + * all 1's, (assuming a properly functioning, self-initialized BMC) + * but that's what you get from reading a bogus address, so we + * test that first. The calling routine uses negative logic. + */ if ((BT_STATUS == 0xFF) && (BT_INTMASK_R == 0xFF)) return 1; @@ -658,8 +694,7 @@ static int bt_size(void) return sizeof(struct si_sm_data); } -struct si_sm_handlers bt_smi_handlers = -{ +struct si_sm_handlers bt_smi_handlers = { .init_data = bt_init_data, .start_transaction = bt_start_transaction, .get_result = bt_get_result, diff --git a/drivers/char/ipmi/ipmi_kcs_sm.c b/drivers/char/ipmi/ipmi_kcs_sm.c index c1b8228cb7b..80704875794 100644 --- a/drivers/char/ipmi/ipmi_kcs_sm.c +++ b/drivers/char/ipmi/ipmi_kcs_sm.c @@ -60,37 +60,58 @@ MODULE_PARM_DESC(kcs_debug, "debug bitmask, 1=enable, 2=messages, 4=states"); /* The states the KCS driver may be in. */ enum kcs_states { - KCS_IDLE, /* The KCS interface is currently - doing nothing. */ - KCS_START_OP, /* We are starting an operation. The - data is in the output buffer, but - nothing has been done to the - interface yet. This was added to - the state machine in the spec to - wait for the initial IBF. */ - KCS_WAIT_WRITE_START, /* We have written a write cmd to the - interface. */ - KCS_WAIT_WRITE, /* We are writing bytes to the - interface. */ - KCS_WAIT_WRITE_END, /* We have written the write end cmd - to the interface, and still need to - write the last byte. */ - KCS_WAIT_READ, /* We are waiting to read data from - the interface. */ - KCS_ERROR0, /* State to transition to the error - handler, this was added to the - state machine in the spec to be - sure IBF was there. */ - KCS_ERROR1, /* First stage error handler, wait for - the interface to respond. */ - KCS_ERROR2, /* The abort cmd has been written, - wait for the interface to - respond. */ - KCS_ERROR3, /* We wrote some data to the - interface, wait for it to switch to - read mode. */ - KCS_HOSED /* The hardware failed to follow the - state machine. */ + /* The KCS interface is currently doing nothing. */ + KCS_IDLE, + + /* + * We are starting an operation. The data is in the output + * buffer, but nothing has been done to the interface yet. This + * was added to the state machine in the spec to wait for the + * initial IBF. + */ + KCS_START_OP, + + /* We have written a write cmd to the interface. */ + KCS_WAIT_WRITE_START, + + /* We are writing bytes to the interface. */ + KCS_WAIT_WRITE, + + /* + * We have written the write end cmd to the interface, and + * still need to write the last byte. + */ + KCS_WAIT_WRITE_END, + + /* We are waiting to read data from the interface. */ + KCS_WAIT_READ, + + /* + * State to transition to the error handler, this was added to + * the state machine in the spec to be sure IBF was there. + */ + KCS_ERROR0, + + /* + * First stage error handler, wait for the interface to + * respond. + */ + KCS_ERROR1, + + /* + * The abort cmd has been written, wait for the interface to + * respond. + */ + KCS_ERROR2, + + /* + * We wrote some data to the interface, wait for it to switch + * to read mode. + */ + KCS_ERROR3, + + /* The hardware failed to follow the state machine. */ + KCS_HOSED }; #define MAX_KCS_READ_SIZE IPMI_MAX_MSG_LENGTH @@ -102,8 +123,7 @@ enum kcs_states { #define MAX_ERROR_RETRIES 10 #define ERROR0_OBF_WAIT_JIFFIES (2*HZ) -struct si_sm_data -{ +struct si_sm_data { enum kcs_states state; struct si_sm_io *io; unsigned char write_data[MAX_KCS_WRITE_SIZE]; @@ -187,7 +207,8 @@ static inline void start_error_recovery(struct si_sm_data *kcs, char *reason) (kcs->error_retries)++; if (kcs->error_retries > MAX_ERROR_RETRIES) { if (kcs_debug & KCS_DEBUG_ENABLE) - printk(KERN_DEBUG "ipmi_kcs_sm: kcs hosed: %s\n", reason); + printk(KERN_DEBUG "ipmi_kcs_sm: kcs hosed: %s\n", + reason); kcs->state = KCS_HOSED; } else { kcs->error0_timeout = jiffies + ERROR0_OBF_WAIT_JIFFIES; @@ -271,10 +292,9 @@ static int start_kcs_transaction(struct si_sm_data *kcs, unsigned char *data, if (kcs_debug & KCS_DEBUG_MSG) { printk(KERN_DEBUG "start_kcs_transaction -"); - for (i = 0; i < size; i ++) { + for (i = 0; i < size; i++) printk(" %02x", (unsigned char) (data [i])); - } - printk ("\n"); + printk("\n"); } kcs->error_retries = 0; memcpy(kcs->write_data, data, size); @@ -305,9 +325,11 @@ static int get_kcs_result(struct si_sm_data *kcs, unsigned char *data, kcs->read_pos = 3; } if (kcs->truncated) { - /* Report a truncated error. We might overwrite - another error, but that's too bad, the user needs - to know it was truncated. */ + /* + * Report a truncated error. We might overwrite + * another error, but that's too bad, the user needs + * to know it was truncated. + */ data[2] = IPMI_ERR_MSG_TRUNCATED; kcs->truncated = 0; } @@ -315,9 +337,11 @@ static int get_kcs_result(struct si_sm_data *kcs, unsigned char *data, return kcs->read_pos; } -/* This implements the state machine defined in the IPMI manual, see - that for details on how this works. Divide that flowchart into - sections delimited by "Wait for IBF" and this will become clear. */ +/* + * This implements the state machine defined in the IPMI manual, see + * that for details on how this works. Divide that flowchart into + * sections delimited by "Wait for IBF" and this will become clear. + */ static enum si_sm_result kcs_event(struct si_sm_data *kcs, long time) { unsigned char status; @@ -388,11 +412,12 @@ static enum si_sm_result kcs_event(struct si_sm_data *kcs, long time) write_next_byte(kcs); } break; - + case KCS_WAIT_WRITE_END: if (state != KCS_WRITE_STATE) { start_error_recovery(kcs, - "Not in write state for write end"); + "Not in write state" + " for write end"); break; } clear_obf(kcs, status); @@ -413,13 +438,15 @@ static enum si_sm_result kcs_event(struct si_sm_data *kcs, long time) return SI_SM_CALL_WITH_DELAY; read_next_byte(kcs); } else { - /* We don't implement this exactly like the state - machine in the spec. Some broken hardware - does not write the final dummy byte to the - read register. Thus obf will never go high - here. We just go straight to idle, and we - handle clearing out obf in idle state if it - happens to come in. */ + /* + * We don't implement this exactly like the state + * machine in the spec. Some broken hardware + * does not write the final dummy byte to the + * read register. Thus obf will never go high + * here. We just go straight to idle, and we + * handle clearing out obf in idle state if it + * happens to come in. + */ clear_obf(kcs, status); kcs->orig_write_count = 0; kcs->state = KCS_IDLE; @@ -430,7 +457,8 @@ static enum si_sm_result kcs_event(struct si_sm_data *kcs, long time) case KCS_ERROR0: clear_obf(kcs, status); status = read_status(kcs); - if (GET_STATUS_OBF(status)) /* controller isn't responding */ + if (GET_STATUS_OBF(status)) + /* controller isn't responding */ if (time_before(jiffies, kcs->error0_timeout)) return SI_SM_CALL_WITH_TICK_DELAY; write_cmd(kcs, KCS_GET_STATUS_ABORT); @@ -442,7 +470,7 @@ static enum si_sm_result kcs_event(struct si_sm_data *kcs, long time) write_data(kcs, 0); kcs->state = KCS_ERROR2; break; - + case KCS_ERROR2: if (state != KCS_READ_STATE) { start_error_recovery(kcs, @@ -456,7 +484,7 @@ static enum si_sm_result kcs_event(struct si_sm_data *kcs, long time) write_data(kcs, KCS_READ_BYTE); kcs->state = KCS_ERROR3; break; - + case KCS_ERROR3: if (state != KCS_IDLE_STATE) { start_error_recovery(kcs, @@ -475,7 +503,7 @@ static enum si_sm_result kcs_event(struct si_sm_data *kcs, long time) return SI_SM_TRANSACTION_COMPLETE; } break; - + case KCS_HOSED: break; } @@ -495,10 +523,12 @@ static int kcs_size(void) static int kcs_detect(struct si_sm_data *kcs) { - /* It's impossible for the KCS status register to be all 1's, - (assuming a properly functioning, self-initialized BMC) - but that's what you get from reading a bogus address, so we - test that first. */ + /* + * It's impossible for the KCS status register to be all 1's, + * (assuming a properly functioning, self-initialized BMC) + * but that's what you get from reading a bogus address, so we + * test that first. + */ if (read_status(kcs) == 0xff) return 1; @@ -509,8 +539,7 @@ static void kcs_cleanup(struct si_sm_data *kcs) { } -struct si_sm_handlers kcs_smi_handlers = -{ +struct si_sm_handlers kcs_smi_handlers = { .init_data = init_kcs_data, .start_transaction = start_kcs_transaction, .get_result = get_kcs_result, diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index 32b2b22996d..8a59aaa21be 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -47,7 +47,7 @@ #define PFX "IPMI message handler: " -#define IPMI_DRIVER_VERSION "39.1" +#define IPMI_DRIVER_VERSION "39.2" static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void); static int ipmi_init_msghandler(void); @@ -63,16 +63,16 @@ static struct proc_dir_entry *proc_ipmi_root; #define MAX_EVENTS_IN_QUEUE 25 -/* Don't let a message sit in a queue forever, always time it with at lest - the max message timer. This is in milliseconds. */ +/* + * Don't let a message sit in a queue forever, always time it with at lest + * the max message timer. This is in milliseconds. + */ #define MAX_MSG_TIMEOUT 60000 - /* * The main "user" data structure. */ -struct ipmi_user -{ +struct ipmi_user { struct list_head link; /* Set to "0" when the user is destroyed. */ @@ -91,8 +91,7 @@ struct ipmi_user int gets_events; }; -struct cmd_rcvr -{ +struct cmd_rcvr { struct list_head link; ipmi_user_t user; @@ -106,12 +105,12 @@ struct cmd_rcvr * or change any data until the RCU period completes. So we * use this next variable during mass deletion so we can have * a list and don't have to wait and restart the search on - * every individual deletion of a command. */ + * every individual deletion of a command. + */ struct cmd_rcvr *next; }; -struct seq_table -{ +struct seq_table { unsigned int inuse : 1; unsigned int broadcast : 1; @@ -119,53 +118,60 @@ struct seq_table unsigned long orig_timeout; unsigned int retries_left; - /* To verify on an incoming send message response that this is - the message that the response is for, we keep a sequence id - and increment it every time we send a message. */ + /* + * To verify on an incoming send message response that this is + * the message that the response is for, we keep a sequence id + * and increment it every time we send a message. + */ long seqid; - /* This is held so we can properly respond to the message on a - timeout, and it is used to hold the temporary data for - retransmission, too. */ + /* + * This is held so we can properly respond to the message on a + * timeout, and it is used to hold the temporary data for + * retransmission, too. + */ struct ipmi_recv_msg *recv_msg; }; -/* Store the information in a msgid (long) to allow us to find a - sequence table entry from the msgid. */ +/* + * Store the information in a msgid (long) to allow us to find a + * sequence table entry from the msgid. + */ #define STORE_SEQ_IN_MSGID(seq, seqid) (((seq&0xff)<<26) | (seqid&0x3ffffff)) #define GET_SEQ_FROM_MSGID(msgid, seq, seqid) \ do { \ seq = ((msgid >> 26) & 0x3f); \ seqid = (msgid & 0x3fffff); \ - } while (0) + } while (0) #define NEXT_SEQID(seqid) (((seqid) + 1) & 0x3fffff) -struct ipmi_channel -{ +struct ipmi_channel { unsigned char medium; unsigned char protocol; - /* My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, - but may be changed by the user. */ + /* + * My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, + * but may be changed by the user. + */ unsigned char address; - /* My LUN. This should generally stay the SMS LUN, but just in - case... */ + /* + * My LUN. This should generally stay the SMS LUN, but just in + * case... + */ unsigned char lun; }; #ifdef CONFIG_PROC_FS -struct ipmi_proc_entry -{ +struct ipmi_proc_entry { char *name; struct ipmi_proc_entry *next; }; #endif -struct bmc_device -{ +struct bmc_device { struct platform_device *dev; struct ipmi_device_id id; unsigned char guid[16]; @@ -186,10 +192,108 @@ struct bmc_device struct device_attribute aux_firmware_rev_attr; }; +/* + * Various statistics for IPMI, these index stats[] in the ipmi_smi + * structure. + */ +enum ipmi_stat_indexes { + /* Commands we got from the user that were invalid. */ + IPMI_STAT_sent_invalid_commands = 0, + + /* Commands we sent to the MC. */ + IPMI_STAT_sent_local_commands, + + /* Responses from the MC that were delivered to a user. */ + IPMI_STAT_handled_local_responses, + + /* Responses from the MC that were not delivered to a user. */ + IPMI_STAT_unhandled_local_responses, + + /* Commands we sent out to the IPMB bus. */ + IPMI_STAT_sent_ipmb_commands, + + /* Commands sent on the IPMB that had errors on the SEND CMD */ + IPMI_STAT_sent_ipmb_command_errs, + + /* Each retransmit increments this count. */ + IPMI_STAT_retransmitted_ipmb_commands, + + /* + * When a message times out (runs out of retransmits) this is + * incremented. + */ + IPMI_STAT_timed_out_ipmb_commands, + + /* + * This is like above, but for broadcasts. Broadcasts are + * *not* included in the above count (they are expected to + * time out). + */ + IPMI_STAT_timed_out_ipmb_broadcasts, + + /* Responses I have sent to the IPMB bus. */ + IPMI_STAT_sent_ipmb_responses, + + /* The response was delivered to the user. */ + IPMI_STAT_handled_ipmb_responses, + + /* The response had invalid data in it. */ + IPMI_STAT_invalid_ipmb_responses, + + /* The response didn't have anyone waiting for it. */ + IPMI_STAT_unhandled_ipmb_responses, + + /* Commands we sent out to the IPMB bus. */ + IPMI_STAT_sent_lan_commands, + + /* Commands sent on the IPMB that had errors on the SEND CMD */ + IPMI_STAT_sent_lan_command_errs, + + /* Each retransmit increments this count. */ + IPMI_STAT_retransmitted_lan_commands, + + /* + * When a message times out (runs out of retransmits) this is + * incremented. + */ + IPMI_STAT_timed_out_lan_commands, + + /* Responses I have sent to the IPMB bus. */ + IPMI_STAT_sent_lan_responses, + + /* The response was delivered to the user. */ + IPMI_STAT_handled_lan_responses, + + /* The response had invalid data in it. */ + IPMI_STAT_invalid_lan_responses, + + /* The response didn't have anyone waiting for it. */ + IPMI_STAT_unhandled_lan_responses, + + /* The command was delivered to the user. */ + IPMI_STAT_handled_commands, + + /* The command had invalid data in it. */ + IPMI_STAT_invalid_commands, + + /* The command didn't have anyone waiting for it. */ + IPMI_STAT_unhandled_commands, + + /* Invalid data in an event. */ + IPMI_STAT_invalid_events, + + /* Events that were received with the proper format. */ + IPMI_STAT_events, + + + /* This *must* remain last, add new values above this. */ + IPMI_NUM_STATS +}; + + #define IPMI_IPMB_NUM_SEQ 64 #define IPMI_MAX_CHANNELS 16 -struct ipmi_smi -{ +struct ipmi_smi { /* What interface number are we? */ int intf_num; @@ -198,8 +302,10 @@ struct ipmi_smi /* Used for a list of interfaces. */ struct list_head link; - /* The list of upper layers that are using me. seq_lock - * protects this. */ + /* + * The list of upper layers that are using me. seq_lock + * protects this. + */ struct list_head users; /* Information to supply to users. */ @@ -213,10 +319,12 @@ struct ipmi_smi char *my_dev_name; char *sysfs_name; - /* This is the lower-layer's sender routine. Note that you + /* + * This is the lower-layer's sender routine. Note that you * must either be holding the ipmi_interfaces_mutex or be in * an umpreemptible region to use this. You must fetch the - * value into a local variable and make sure it is not NULL. */ + * value into a local variable and make sure it is not NULL. + */ struct ipmi_smi_handlers *handlers; void *send_info; @@ -229,34 +337,45 @@ struct ipmi_smi /* Driver-model device for the system interface. */ struct device *si_dev; - /* A table of sequence numbers for this interface. We use the - sequence numbers for IPMB messages that go out of the - interface to match them up with their responses. A routine - is called periodically to time the items in this list. */ + /* + * A table of sequence numbers for this interface. We use the + * sequence numbers for IPMB messages that go out of the + * interface to match them up with their responses. A routine + * is called periodically to time the items in this list. + */ spinlock_t seq_lock; struct seq_table seq_table[IPMI_IPMB_NUM_SEQ]; int curr_seq; - /* Messages that were delayed for some reason (out of memory, - for instance), will go in here to be processed later in a - periodic timer interrupt. */ + /* + * Messages that were delayed for some reason (out of memory, + * for instance), will go in here to be processed later in a + * periodic timer interrupt. + */ spinlock_t waiting_msgs_lock; struct list_head waiting_msgs; - /* The list of command receivers that are registered for commands - on this interface. */ + /* + * The list of command receivers that are registered for commands + * on this interface. + */ struct mutex cmd_rcvrs_mutex; struct list_head cmd_rcvrs; - /* Events that were queues because no one was there to receive - them. */ + /* + * Events that were queues because no one was there to receive + * them. + */ spinlock_t events_lock; /* For dealing with event stuff. */ struct list_head waiting_events; unsigned int waiting_events_count; /* How many events in queue? */ - int delivering_events; + char delivering_events; + char event_msg_printed; - /* The event receiver for my BMC, only really used at panic - shutdown as a place to store this. */ + /* + * The event receiver for my BMC, only really used at panic + * shutdown as a place to store this. + */ unsigned char event_receiver; unsigned char event_receiver_lun; unsigned char local_sel_device; @@ -268,14 +387,18 @@ struct ipmi_smi int auto_maintenance_timeout; spinlock_t maintenance_mode_lock; /* Used in a timer... */ - /* A cheap hack, if this is non-null and a message to an - interface comes in with a NULL user, call this routine with - it. Note that the message will still be freed by the - caller. This only works on the system interface. */ + /* + * A cheap hack, if this is non-null and a message to an + * interface comes in with a NULL user, call this routine with + * it. Note that the message will still be freed by the + * caller. This only works on the system interface. + */ void (*null_user_handler)(ipmi_smi_t intf, struct ipmi_recv_msg *msg); - /* When we are scanning the channels for an SMI, this will - tell which channel we are scanning. */ + /* + * When we are scanning the channels for an SMI, this will + * tell which channel we are scanning. + */ int curr_channel; /* Channel information */ @@ -285,74 +408,14 @@ struct ipmi_smi struct proc_dir_entry *proc_dir; char proc_dir_name[10]; - spinlock_t counter_lock; /* For making counters atomic. */ - - /* Commands we got that were invalid. */ - unsigned int sent_invalid_commands; - - /* Commands we sent to the MC. */ - unsigned int sent_local_commands; - /* Responses from the MC that were delivered to a user. */ - unsigned int handled_local_responses; - /* Responses from the MC that were not delivered to a user. */ - unsigned int unhandled_local_responses; - - /* Commands we sent out to the IPMB bus. */ - unsigned int sent_ipmb_commands; - /* Commands sent on the IPMB that had errors on the SEND CMD */ - unsigned int sent_ipmb_command_errs; - /* Each retransmit increments this count. */ - unsigned int retransmitted_ipmb_commands; - /* When a message times out (runs out of retransmits) this is - incremented. */ - unsigned int timed_out_ipmb_commands; - - /* This is like above, but for broadcasts. Broadcasts are - *not* included in the above count (they are expected to - time out). */ - unsigned int timed_out_ipmb_broadcasts; + atomic_t stats[IPMI_NUM_STATS]; - /* Responses I have sent to the IPMB bus. */ - unsigned int sent_ipmb_responses; - - /* The response was delivered to the user. */ - unsigned int handled_ipmb_responses; - /* The response had invalid data in it. */ - unsigned int invalid_ipmb_responses; - /* The response didn't have anyone waiting for it. */ - unsigned int unhandled_ipmb_responses; - - /* Commands we sent out to the IPMB bus. */ - unsigned int sent_lan_commands; - /* Commands sent on the IPMB that had errors on the SEND CMD */ - unsigned int sent_lan_command_errs; - /* Each retransmit increments this count. */ - unsigned int retransmitted_lan_commands; - /* When a message times out (runs out of retransmits) this is - incremented. */ - unsigned int timed_out_lan_commands; - - /* Responses I have sent to the IPMB bus. */ - unsigned int sent_lan_responses; - - /* The response was delivered to the user. */ - unsigned int handled_lan_responses; - /* The response had invalid data in it. */ - unsigned int invalid_lan_responses; - /* The response didn't have anyone waiting for it. */ - unsigned int unhandled_lan_responses; - - /* The command was delivered to the user. */ - unsigned int handled_commands; - /* The command had invalid data in it. */ - unsigned int invalid_commands; - /* The command didn't have anyone waiting for it. */ - unsigned int unhandled_commands; - - /* Invalid data in an event. */ - unsigned int invalid_events; - /* Events that were received with the proper format. */ - unsigned int events; + /* + * run_to_completion duplicate of smb_info, smi_info + * and ipmi_serial_info structures. Used to decrease numbers of + * parameters passed by "low" level IPMI code. + */ + int run_to_completion; }; #define to_si_intf_from_dev(device) container_of(device, struct ipmi_smi, dev) @@ -368,12 +431,19 @@ static DEFINE_MUTEX(ipmidriver_mutex); static LIST_HEAD(ipmi_interfaces); static DEFINE_MUTEX(ipmi_interfaces_mutex); -/* List of watchers that want to know when smi's are added and - deleted. */ +/* + * List of watchers that want to know when smi's are added and deleted. + */ static LIST_HEAD(smi_watchers); static DEFINE_MUTEX(smi_watchers_mutex); +#define ipmi_inc_stat(intf, stat) \ + atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat]) +#define ipmi_get_stat(intf, stat) \ + ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat])) + + static void free_recv_msg_list(struct list_head *q) { struct ipmi_recv_msg *msg, *msg2; @@ -417,10 +487,8 @@ static void clean_up_interface_data(ipmi_smi_t intf) for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { if ((intf->seq_table[i].inuse) - && (intf->seq_table[i].recv_msg)) - { + && (intf->seq_table[i].recv_msg)) ipmi_free_recv_msg(intf->seq_table[i].recv_msg); - } } } @@ -487,6 +555,7 @@ int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher) } return -ENOMEM; } +EXPORT_SYMBOL(ipmi_smi_watcher_register); int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) { @@ -495,6 +564,7 @@ int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) mutex_unlock(&smi_watchers_mutex); return 0; } +EXPORT_SYMBOL(ipmi_smi_watcher_unregister); /* * Must be called with smi_watchers_mutex held. @@ -530,8 +600,7 @@ ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2) } if ((addr1->addr_type == IPMI_IPMB_ADDR_TYPE) - || (addr1->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) - { + || (addr1->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) { struct ipmi_ipmb_addr *ipmb_addr1 = (struct ipmi_ipmb_addr *) addr1; struct ipmi_ipmb_addr *ipmb_addr2 @@ -559,9 +628,8 @@ ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2) int ipmi_validate_addr(struct ipmi_addr *addr, int len) { - if (len < sizeof(struct ipmi_system_interface_addr)) { + if (len < sizeof(struct ipmi_system_interface_addr)) return -EINVAL; - } if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { if (addr->channel != IPMI_BMC_CHANNEL) @@ -575,23 +643,21 @@ int ipmi_validate_addr(struct ipmi_addr *addr, int len) return -EINVAL; if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE) - || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) - { - if (len < sizeof(struct ipmi_ipmb_addr)) { + || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) { + if (len < sizeof(struct ipmi_ipmb_addr)) return -EINVAL; - } return 0; } if (addr->addr_type == IPMI_LAN_ADDR_TYPE) { - if (len < sizeof(struct ipmi_lan_addr)) { + if (len < sizeof(struct ipmi_lan_addr)) return -EINVAL; - } return 0; } return -EINVAL; } +EXPORT_SYMBOL(ipmi_validate_addr); unsigned int ipmi_addr_length(int addr_type) { @@ -599,34 +665,28 @@ unsigned int ipmi_addr_length(int addr_type) return sizeof(struct ipmi_system_interface_addr); if ((addr_type == IPMI_IPMB_ADDR_TYPE) - || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) - { + || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) return sizeof(struct ipmi_ipmb_addr); - } if (addr_type == IPMI_LAN_ADDR_TYPE) return sizeof(struct ipmi_lan_addr); return 0; } +EXPORT_SYMBOL(ipmi_addr_length); static void deliver_response(struct ipmi_recv_msg *msg) { if (!msg->user) { ipmi_smi_t intf = msg->user_msg_data; - unsigned long flags; /* Special handling for NULL users. */ if (intf->null_user_handler) { intf->null_user_handler(intf, msg); - spin_lock_irqsave(&intf->counter_lock, flags); - intf->handled_local_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, handled_local_responses); } else { /* No handler, so give up. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->unhandled_local_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, unhandled_local_responses); } ipmi_free_recv_msg(msg); } else { @@ -646,9 +706,11 @@ deliver_err_response(struct ipmi_recv_msg *msg, int err) deliver_response(msg); } -/* Find the next sequence number not being used and add the given - message with the given timeout to the sequence table. This must be - called with the interface's seq_lock held. */ +/* + * Find the next sequence number not being used and add the given + * message with the given timeout to the sequence table. This must be + * called with the interface's seq_lock held. + */ static int intf_next_seq(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, unsigned long timeout, @@ -660,10 +722,8 @@ static int intf_next_seq(ipmi_smi_t intf, int rv = 0; unsigned int i; - for (i = intf->curr_seq; - (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq; - i = (i+1)%IPMI_IPMB_NUM_SEQ) - { + for (i = intf->curr_seq; (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq; + i = (i+1)%IPMI_IPMB_NUM_SEQ) { if (!intf->seq_table[i].inuse) break; } @@ -671,8 +731,10 @@ static int intf_next_seq(ipmi_smi_t intf, if (!intf->seq_table[i].inuse) { intf->seq_table[i].recv_msg = recv_msg; - /* Start with the maximum timeout, when the send response - comes in we will start the real timer. */ + /* + * Start with the maximum timeout, when the send response + * comes in we will start the real timer. + */ intf->seq_table[i].timeout = MAX_MSG_TIMEOUT; intf->seq_table[i].orig_timeout = timeout; intf->seq_table[i].retries_left = retries; @@ -685,15 +747,17 @@ static int intf_next_seq(ipmi_smi_t intf, } else { rv = -EAGAIN; } - + return rv; } -/* Return the receive message for the given sequence number and - release the sequence number so it can be reused. Some other data - is passed in to be sure the message matches up correctly (to help - guard against message coming in after their timeout and the - sequence number being reused). */ +/* + * Return the receive message for the given sequence number and + * release the sequence number so it can be reused. Some other data + * is passed in to be sure the message matches up correctly (to help + * guard against message coming in after their timeout and the + * sequence number being reused). + */ static int intf_find_seq(ipmi_smi_t intf, unsigned char seq, short channel, @@ -712,11 +776,9 @@ static int intf_find_seq(ipmi_smi_t intf, if (intf->seq_table[seq].inuse) { struct ipmi_recv_msg *msg = intf->seq_table[seq].recv_msg; - if ((msg->addr.channel == channel) - && (msg->msg.cmd == cmd) - && (msg->msg.netfn == netfn) - && (ipmi_addr_equal(addr, &(msg->addr)))) - { + if ((msg->addr.channel == channel) && (msg->msg.cmd == cmd) + && (msg->msg.netfn == netfn) + && (ipmi_addr_equal(addr, &(msg->addr)))) { *recv_msg = msg; intf->seq_table[seq].inuse = 0; rv = 0; @@ -741,11 +803,12 @@ static int intf_start_seq_timer(ipmi_smi_t intf, GET_SEQ_FROM_MSGID(msgid, seq, seqid); spin_lock_irqsave(&(intf->seq_lock), flags); - /* We do this verification because the user can be deleted - while a message is outstanding. */ + /* + * We do this verification because the user can be deleted + * while a message is outstanding. + */ if ((intf->seq_table[seq].inuse) - && (intf->seq_table[seq].seqid == seqid)) - { + && (intf->seq_table[seq].seqid == seqid)) { struct seq_table *ent = &(intf->seq_table[seq]); ent->timeout = ent->orig_timeout; rv = 0; @@ -770,11 +833,12 @@ static int intf_err_seq(ipmi_smi_t intf, GET_SEQ_FROM_MSGID(msgid, seq, seqid); spin_lock_irqsave(&(intf->seq_lock), flags); - /* We do this verification because the user can be deleted - while a message is outstanding. */ + /* + * We do this verification because the user can be deleted + * while a message is outstanding. + */ if ((intf->seq_table[seq].inuse) - && (intf->seq_table[seq].seqid == seqid)) - { + && (intf->seq_table[seq].seqid == seqid)) { struct seq_table *ent = &(intf->seq_table[seq]); ent->inuse = 0; @@ -800,24 +864,30 @@ int ipmi_create_user(unsigned int if_num, int rv = 0; ipmi_smi_t intf; - /* There is no module usecount here, because it's not - required. Since this can only be used by and called from - other modules, they will implicitly use this module, and - thus this can't be removed unless the other modules are - removed. */ + /* + * There is no module usecount here, because it's not + * required. Since this can only be used by and called from + * other modules, they will implicitly use this module, and + * thus this can't be removed unless the other modules are + * removed. + */ if (handler == NULL) return -EINVAL; - /* Make sure the driver is actually initialized, this handles - problems with initialization order. */ + /* + * Make sure the driver is actually initialized, this handles + * problems with initialization order. + */ if (!initialized) { rv = ipmi_init_msghandler(); if (rv) return rv; - /* The init code doesn't return an error if it was turned - off, but it won't initialize. Check that. */ + /* + * The init code doesn't return an error if it was turned + * off, but it won't initialize. Check that. + */ if (!initialized) return -ENODEV; } @@ -858,8 +928,10 @@ int ipmi_create_user(unsigned int if_num, } } - /* Hold the lock so intf->handlers is guaranteed to be good - * until now */ + /* + * Hold the lock so intf->handlers is guaranteed to be good + * until now + */ mutex_unlock(&ipmi_interfaces_mutex); new_user->valid = 1; @@ -876,6 +948,7 @@ out_kfree: kfree(new_user); return rv; } +EXPORT_SYMBOL(ipmi_create_user); static void free_user(struct kref *ref) { @@ -899,8 +972,7 @@ int ipmi_destroy_user(ipmi_user_t user) for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { if (intf->seq_table[i].inuse - && (intf->seq_table[i].recv_msg->user == user)) - { + && (intf->seq_table[i].recv_msg->user == user)) { intf->seq_table[i].inuse = 0; ipmi_free_recv_msg(intf->seq_table[i].recv_msg); } @@ -943,6 +1015,7 @@ int ipmi_destroy_user(ipmi_user_t user) return 0; } +EXPORT_SYMBOL(ipmi_destroy_user); void ipmi_get_version(ipmi_user_t user, unsigned char *major, @@ -951,6 +1024,7 @@ void ipmi_get_version(ipmi_user_t user, *major = user->intf->ipmi_version_major; *minor = user->intf->ipmi_version_minor; } +EXPORT_SYMBOL(ipmi_get_version); int ipmi_set_my_address(ipmi_user_t user, unsigned int channel, @@ -961,6 +1035,7 @@ int ipmi_set_my_address(ipmi_user_t user, user->intf->channels[channel].address = address; return 0; } +EXPORT_SYMBOL(ipmi_set_my_address); int ipmi_get_my_address(ipmi_user_t user, unsigned int channel, @@ -971,6 +1046,7 @@ int ipmi_get_my_address(ipmi_user_t user, *address = user->intf->channels[channel].address; return 0; } +EXPORT_SYMBOL(ipmi_get_my_address); int ipmi_set_my_LUN(ipmi_user_t user, unsigned int channel, @@ -981,6 +1057,7 @@ int ipmi_set_my_LUN(ipmi_user_t user, user->intf->channels[channel].lun = LUN & 0x3; return 0; } +EXPORT_SYMBOL(ipmi_set_my_LUN); int ipmi_get_my_LUN(ipmi_user_t user, unsigned int channel, @@ -991,6 +1068,7 @@ int ipmi_get_my_LUN(ipmi_user_t user, *address = user->intf->channels[channel].lun; return 0; } +EXPORT_SYMBOL(ipmi_get_my_LUN); int ipmi_get_maintenance_mode(ipmi_user_t user) { @@ -1075,6 +1153,11 @@ int ipmi_set_gets_events(ipmi_user_t user, int val) list_for_each_entry_safe(msg, msg2, &intf->waiting_events, link) list_move_tail(&msg->link, &msgs); intf->waiting_events_count = 0; + if (intf->event_msg_printed) { + printk(KERN_WARNING PFX "Event queue no longer" + " full\n"); + intf->event_msg_printed = 0; + } intf->delivering_events = 1; spin_unlock_irqrestore(&intf->events_lock, flags); @@ -1094,6 +1177,7 @@ int ipmi_set_gets_events(ipmi_user_t user, int val) return 0; } +EXPORT_SYMBOL(ipmi_set_gets_events); static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf, unsigned char netfn, @@ -1159,6 +1243,7 @@ int ipmi_register_for_cmd(ipmi_user_t user, return rv; } +EXPORT_SYMBOL(ipmi_register_for_cmd); int ipmi_unregister_for_cmd(ipmi_user_t user, unsigned char netfn, @@ -1196,19 +1281,13 @@ int ipmi_unregister_for_cmd(ipmi_user_t user, } return rv; } - -void ipmi_user_set_run_to_completion(ipmi_user_t user, int val) -{ - ipmi_smi_t intf = user->intf; - if (intf->handlers) - intf->handlers->set_run_to_completion(intf->send_info, val); -} +EXPORT_SYMBOL(ipmi_unregister_for_cmd); static unsigned char ipmb_checksum(unsigned char *data, int size) { unsigned char csum = 0; - + for (; size > 0; size--, data++) csum += *data; @@ -1250,8 +1329,10 @@ static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg, = ipmb_checksum(&(smi_msg->data[i+6]), smi_msg->data_size-6); - /* Add on the checksum size and the offset from the - broadcast. */ + /* + * Add on the checksum size and the offset from the + * broadcast. + */ smi_msg->data_size += 1 + i; smi_msg->msgid = msgid; @@ -1287,17 +1368,21 @@ static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg, = ipmb_checksum(&(smi_msg->data[7]), smi_msg->data_size-7); - /* Add on the checksum size and the offset from the - broadcast. */ + /* + * Add on the checksum size and the offset from the + * broadcast. + */ smi_msg->data_size += 1; smi_msg->msgid = msgid; } -/* Separate from ipmi_request so that the user does not have to be - supplied in certain circumstances (mainly at panic time). If - messages are supplied, they will be freed, even if an error - occurs. */ +/* + * Separate from ipmi_request so that the user does not have to be + * supplied in certain circumstances (mainly at panic time). If + * messages are supplied, they will be freed, even if an error + * occurs. + */ static int i_ipmi_request(ipmi_user_t user, ipmi_smi_t intf, struct ipmi_addr *addr, @@ -1319,19 +1404,18 @@ static int i_ipmi_request(ipmi_user_t user, struct ipmi_smi_handlers *handlers; - if (supplied_recv) { + if (supplied_recv) recv_msg = supplied_recv; - } else { + else { recv_msg = ipmi_alloc_recv_msg(); - if (recv_msg == NULL) { + if (recv_msg == NULL) return -ENOMEM; - } } recv_msg->user_msg_data = user_msg_data; - if (supplied_smi) { + if (supplied_smi) smi_msg = (struct ipmi_smi_msg *) supplied_smi; - } else { + else { smi_msg = ipmi_alloc_smi_msg(); if (smi_msg == NULL) { ipmi_free_recv_msg(recv_msg); @@ -1350,8 +1434,10 @@ static int i_ipmi_request(ipmi_user_t user, if (user) kref_get(&user->refcount); recv_msg->msgid = msgid; - /* Store the message to send in the receive message so timeout - responses can get the proper response data. */ + /* + * Store the message to send in the receive message so timeout + * responses can get the proper response data. + */ recv_msg->msg = *msg; if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { @@ -1365,9 +1451,7 @@ static int i_ipmi_request(ipmi_user_t user, smi_addr = (struct ipmi_system_interface_addr *) addr; if (smi_addr->lun > 3) { - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EINVAL; goto out_err; } @@ -1377,13 +1461,12 @@ static int i_ipmi_request(ipmi_user_t user, if ((msg->netfn == IPMI_NETFN_APP_REQUEST) && ((msg->cmd == IPMI_SEND_MSG_CMD) || (msg->cmd == IPMI_GET_MSG_CMD) - || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) - { - /* We don't let the user do these, since we manage - the sequence numbers. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) { + /* + * We don't let the user do these, since we manage + * the sequence numbers. + */ + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EINVAL; goto out_err; } @@ -1391,14 +1474,12 @@ static int i_ipmi_request(ipmi_user_t user, if (((msg->netfn == IPMI_NETFN_APP_REQUEST) && ((msg->cmd == IPMI_COLD_RESET_CMD) || (msg->cmd == IPMI_WARM_RESET_CMD))) - || (msg->netfn == IPMI_NETFN_FIRMWARE_REQUEST)) - { + || (msg->netfn == IPMI_NETFN_FIRMWARE_REQUEST)) { spin_lock_irqsave(&intf->maintenance_mode_lock, flags); intf->auto_maintenance_timeout = IPMI_MAINTENANCE_MODE_TIMEOUT; if (!intf->maintenance_mode - && !intf->maintenance_mode_enable) - { + && !intf->maintenance_mode_enable) { intf->maintenance_mode_enable = 1; maintenance_mode_update(intf); } @@ -1407,9 +1488,7 @@ static int i_ipmi_request(ipmi_user_t user, } if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) { - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EMSGSIZE; goto out_err; } @@ -1421,31 +1500,23 @@ static int i_ipmi_request(ipmi_user_t user, if (msg->data_len > 0) memcpy(&(smi_msg->data[2]), msg->data, msg->data_len); smi_msg->data_size = msg->data_len + 2; - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_local_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, sent_local_commands); } else if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE) - || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) - { + || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) { struct ipmi_ipmb_addr *ipmb_addr; unsigned char ipmb_seq; long seqid; int broadcast = 0; if (addr->channel >= IPMI_MAX_CHANNELS) { - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EINVAL; goto out_err; } if (intf->channels[addr->channel].medium - != IPMI_CHANNEL_MEDIUM_IPMB) - { - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + != IPMI_CHANNEL_MEDIUM_IPMB) { + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EINVAL; goto out_err; } @@ -1457,9 +1528,11 @@ static int i_ipmi_request(ipmi_user_t user, retries = 4; } if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) { - /* Broadcasts add a zero at the beginning of the - message, but otherwise is the same as an IPMB - address. */ + /* + * Broadcasts add a zero at the beginning of the + * message, but otherwise is the same as an IPMB + * address. + */ addr->addr_type = IPMI_IPMB_ADDR_TYPE; broadcast = 1; } @@ -1469,21 +1542,19 @@ static int i_ipmi_request(ipmi_user_t user, if (retry_time_ms == 0) retry_time_ms = 1000; - /* 9 for the header and 1 for the checksum, plus - possibly one for the broadcast. */ + /* + * 9 for the header and 1 for the checksum, plus + * possibly one for the broadcast. + */ if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) { - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EMSGSIZE; goto out_err; } ipmb_addr = (struct ipmi_ipmb_addr *) addr; if (ipmb_addr->lun > 3) { - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EINVAL; goto out_err; } @@ -1491,29 +1562,31 @@ static int i_ipmi_request(ipmi_user_t user, memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr)); if (recv_msg->msg.netfn & 0x1) { - /* It's a response, so use the user's sequence - from msgid. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_ipmb_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + /* + * It's a response, so use the user's sequence + * from msgid. + */ + ipmi_inc_stat(intf, sent_ipmb_responses); format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid, msgid, broadcast, source_address, source_lun); - /* Save the receive message so we can use it - to deliver the response. */ + /* + * Save the receive message so we can use it + * to deliver the response. + */ smi_msg->user_data = recv_msg; } else { /* It's a command, so get a sequence for it. */ spin_lock_irqsave(&(intf->seq_lock), flags); - spin_lock(&intf->counter_lock); - intf->sent_ipmb_commands++; - spin_unlock(&intf->counter_lock); + ipmi_inc_stat(intf, sent_ipmb_commands); - /* Create a sequence number with a 1 second - timeout and 4 retries. */ + /* + * Create a sequence number with a 1 second + * timeout and 4 retries. + */ rv = intf_next_seq(intf, recv_msg, retry_time_ms, @@ -1522,34 +1595,42 @@ static int i_ipmi_request(ipmi_user_t user, &ipmb_seq, &seqid); if (rv) { - /* We have used up all the sequence numbers, - probably, so abort. */ + /* + * We have used up all the sequence numbers, + * probably, so abort. + */ spin_unlock_irqrestore(&(intf->seq_lock), flags); goto out_err; } - /* Store the sequence number in the message, - so that when the send message response - comes back we can start the timer. */ + /* + * Store the sequence number in the message, + * so that when the send message response + * comes back we can start the timer. + */ format_ipmb_msg(smi_msg, msg, ipmb_addr, STORE_SEQ_IN_MSGID(ipmb_seq, seqid), ipmb_seq, broadcast, source_address, source_lun); - /* Copy the message into the recv message data, so we - can retransmit it later if necessary. */ + /* + * Copy the message into the recv message data, so we + * can retransmit it later if necessary. + */ memcpy(recv_msg->msg_data, smi_msg->data, smi_msg->data_size); recv_msg->msg.data = recv_msg->msg_data; recv_msg->msg.data_len = smi_msg->data_size; - /* We don't unlock until here, because we need - to copy the completed message into the - recv_msg before we release the lock. - Otherwise, race conditions may bite us. I - know that's pretty paranoid, but I prefer - to be correct. */ + /* + * We don't unlock until here, because we need + * to copy the completed message into the + * recv_msg before we release the lock. + * Otherwise, race conditions may bite us. I + * know that's pretty paranoid, but I prefer + * to be correct. + */ spin_unlock_irqrestore(&(intf->seq_lock), flags); } } else if (addr->addr_type == IPMI_LAN_ADDR_TYPE) { @@ -1558,21 +1639,16 @@ static int i_ipmi_request(ipmi_user_t user, long seqid; if (addr->channel >= IPMI_MAX_CHANNELS) { - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EINVAL; goto out_err; } if ((intf->channels[addr->channel].medium - != IPMI_CHANNEL_MEDIUM_8023LAN) + != IPMI_CHANNEL_MEDIUM_8023LAN) && (intf->channels[addr->channel].medium - != IPMI_CHANNEL_MEDIUM_ASYNC)) - { - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + != IPMI_CHANNEL_MEDIUM_ASYNC)) { + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EINVAL; goto out_err; } @@ -1585,18 +1661,14 @@ static int i_ipmi_request(ipmi_user_t user, /* 11 for the header and 1 for the checksum. */ if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) { - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EMSGSIZE; goto out_err; } lan_addr = (struct ipmi_lan_addr *) addr; if (lan_addr->lun > 3) { - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EINVAL; goto out_err; } @@ -1604,28 +1676,30 @@ static int i_ipmi_request(ipmi_user_t user, memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr)); if (recv_msg->msg.netfn & 0x1) { - /* It's a response, so use the user's sequence - from msgid. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_lan_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + /* + * It's a response, so use the user's sequence + * from msgid. + */ + ipmi_inc_stat(intf, sent_lan_responses); format_lan_msg(smi_msg, msg, lan_addr, msgid, msgid, source_lun); - /* Save the receive message so we can use it - to deliver the response. */ + /* + * Save the receive message so we can use it + * to deliver the response. + */ smi_msg->user_data = recv_msg; } else { /* It's a command, so get a sequence for it. */ spin_lock_irqsave(&(intf->seq_lock), flags); - spin_lock(&intf->counter_lock); - intf->sent_lan_commands++; - spin_unlock(&intf->counter_lock); + ipmi_inc_stat(intf, sent_lan_commands); - /* Create a sequence number with a 1 second - timeout and 4 retries. */ + /* + * Create a sequence number with a 1 second + * timeout and 4 retries. + */ rv = intf_next_seq(intf, recv_msg, retry_time_ms, @@ -1634,40 +1708,46 @@ static int i_ipmi_request(ipmi_user_t user, &ipmb_seq, &seqid); if (rv) { - /* We have used up all the sequence numbers, - probably, so abort. */ + /* + * We have used up all the sequence numbers, + * probably, so abort. + */ spin_unlock_irqrestore(&(intf->seq_lock), flags); goto out_err; } - /* Store the sequence number in the message, - so that when the send message response - comes back we can start the timer. */ + /* + * Store the sequence number in the message, + * so that when the send message response + * comes back we can start the timer. + */ format_lan_msg(smi_msg, msg, lan_addr, STORE_SEQ_IN_MSGID(ipmb_seq, seqid), ipmb_seq, source_lun); - /* Copy the message into the recv message data, so we - can retransmit it later if necessary. */ + /* + * Copy the message into the recv message data, so we + * can retransmit it later if necessary. + */ memcpy(recv_msg->msg_data, smi_msg->data, smi_msg->data_size); recv_msg->msg.data = recv_msg->msg_data; recv_msg->msg.data_len = smi_msg->data_size; - /* We don't unlock until here, because we need - to copy the completed message into the - recv_msg before we release the lock. - Otherwise, race conditions may bite us. I - know that's pretty paranoid, but I prefer - to be correct. */ + /* + * We don't unlock until here, because we need + * to copy the completed message into the + * recv_msg before we release the lock. + * Otherwise, race conditions may bite us. I + * know that's pretty paranoid, but I prefer + * to be correct. + */ spin_unlock_irqrestore(&(intf->seq_lock), flags); } } else { /* Unknown address type. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->sent_invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, sent_invalid_commands); rv = -EINVAL; goto out_err; } @@ -1735,6 +1815,7 @@ int ipmi_request_settime(ipmi_user_t user, retries, retry_time_ms); } +EXPORT_SYMBOL(ipmi_request_settime); int ipmi_request_supply_msgs(ipmi_user_t user, struct ipmi_addr *addr, @@ -1766,6 +1847,7 @@ int ipmi_request_supply_msgs(ipmi_user_t user, lun, -1, 0); } +EXPORT_SYMBOL(ipmi_request_supply_msgs); #ifdef CONFIG_PROC_FS static int ipmb_file_read_proc(char *page, char **start, off_t off, @@ -1790,7 +1872,7 @@ static int version_file_read_proc(char *page, char **start, off_t off, char *out = (char *) page; ipmi_smi_t intf = data; - return sprintf(out, "%d.%d\n", + return sprintf(out, "%u.%u\n", ipmi_version_major(&intf->bmc->id), ipmi_version_minor(&intf->bmc->id)); } @@ -1801,65 +1883,65 @@ static int stat_file_read_proc(char *page, char **start, off_t off, char *out = (char *) page; ipmi_smi_t intf = data; - out += sprintf(out, "sent_invalid_commands: %d\n", - intf->sent_invalid_commands); - out += sprintf(out, "sent_local_commands: %d\n", - intf->sent_local_commands); - out += sprintf(out, "handled_local_responses: %d\n", - intf->handled_local_responses); - out += sprintf(out, "unhandled_local_responses: %d\n", - intf->unhandled_local_responses); - out += sprintf(out, "sent_ipmb_commands: %d\n", - intf->sent_ipmb_commands); - out += sprintf(out, "sent_ipmb_command_errs: %d\n", - intf->sent_ipmb_command_errs); - out += sprintf(out, "retransmitted_ipmb_commands: %d\n", - intf->retransmitted_ipmb_commands); - out += sprintf(out, "timed_out_ipmb_commands: %d\n", - intf->timed_out_ipmb_commands); - out += sprintf(out, "timed_out_ipmb_broadcasts: %d\n", - intf->timed_out_ipmb_broadcasts); - out += sprintf(out, "sent_ipmb_responses: %d\n", - intf->sent_ipmb_responses); - out += sprintf(out, "handled_ipmb_responses: %d\n", - intf->handled_ipmb_responses); - out += sprintf(out, "invalid_ipmb_responses: %d\n", - intf->invalid_ipmb_responses); - out += sprintf(out, "unhandled_ipmb_responses: %d\n", - intf->unhandled_ipmb_responses); - out += sprintf(out, "sent_lan_commands: %d\n", - intf->sent_lan_commands); - out += sprintf(out, "sent_lan_command_errs: %d\n", - intf->sent_lan_command_errs); - out += sprintf(out, "retransmitted_lan_commands: %d\n", - intf->retransmitted_lan_commands); - out += sprintf(out, "timed_out_lan_commands: %d\n", - intf->timed_out_lan_commands); - out += sprintf(out, "sent_lan_responses: %d\n", - intf->sent_lan_responses); - out += sprintf(out, "handled_lan_responses: %d\n", - intf->handled_lan_responses); - out += sprintf(out, "invalid_lan_responses: %d\n", - intf->invalid_lan_responses); - out += sprintf(out, "unhandled_lan_responses: %d\n", - intf->unhandled_lan_responses); - out += sprintf(out, "handled_commands: %d\n", - intf->handled_commands); - out += sprintf(out, "invalid_commands: %d\n", - intf->invalid_commands); - out += sprintf(out, "unhandled_commands: %d\n", - intf->unhandled_commands); - out += sprintf(out, "invalid_events: %d\n", - intf->invalid_events); - out += sprintf(out, "events: %d\n", - intf->events); + out += sprintf(out, "sent_invalid_commands: %u\n", + ipmi_get_stat(intf, sent_invalid_commands)); + out += sprintf(out, "sent_local_commands: %u\n", + ipmi_get_stat(intf, sent_local_commands)); + out += sprintf(out, "handled_local_responses: %u\n", + ipmi_get_stat(intf, handled_local_responses)); + out += sprintf(out, "unhandled_local_responses: %u\n", + ipmi_get_stat(intf, unhandled_local_responses)); + out += sprintf(out, "sent_ipmb_commands: %u\n", + ipmi_get_stat(intf, sent_ipmb_commands)); + out += sprintf(out, "sent_ipmb_command_errs: %u\n", + ipmi_get_stat(intf, sent_ipmb_command_errs)); + out += sprintf(out, "retransmitted_ipmb_commands: %u\n", + ipmi_get_stat(intf, retransmitted_ipmb_commands)); + out += sprintf(out, "timed_out_ipmb_commands: %u\n", + ipmi_get_stat(intf, timed_out_ipmb_commands)); + out += sprintf(out, "timed_out_ipmb_broadcasts: %u\n", + ipmi_get_stat(intf, timed_out_ipmb_broadcasts)); + out += sprintf(out, "sent_ipmb_responses: %u\n", + ipmi_get_stat(intf, sent_ipmb_responses)); + out += sprintf(out, "handled_ipmb_responses: %u\n", + ipmi_get_stat(intf, handled_ipmb_responses)); + out += sprintf(out, "invalid_ipmb_responses: %u\n", + ipmi_get_stat(intf, invalid_ipmb_responses)); + out += sprintf(out, "unhandled_ipmb_responses: %u\n", + ipmi_get_stat(intf, unhandled_ipmb_responses)); + out += sprintf(out, "sent_lan_commands: %u\n", + ipmi_get_stat(intf, sent_lan_commands)); + out += sprintf(out, "sent_lan_command_errs: %u\n", + ipmi_get_stat(intf, sent_lan_command_errs)); + out += sprintf(out, "retransmitted_lan_commands: %u\n", + ipmi_get_stat(intf, retransmitted_lan_commands)); + out += sprintf(out, "timed_out_lan_commands: %u\n", + ipmi_get_stat(intf, timed_out_lan_commands)); + out += sprintf(out, "sent_lan_responses: %u\n", + ipmi_get_stat(intf, sent_lan_responses)); + out += sprintf(out, "handled_lan_responses: %u\n", + ipmi_get_stat(intf, handled_lan_responses)); + out += sprintf(out, "invalid_lan_responses: %u\n", + ipmi_get_stat(intf, invalid_lan_responses)); + out += sprintf(out, "unhandled_lan_responses: %u\n", + ipmi_get_stat(intf, unhandled_lan_responses)); + out += sprintf(out, "handled_commands: %u\n", + ipmi_get_stat(intf, handled_commands)); + out += sprintf(out, "invalid_commands: %u\n", + ipmi_get_stat(intf, invalid_commands)); + out += sprintf(out, "unhandled_commands: %u\n", + ipmi_get_stat(intf, unhandled_commands)); + out += sprintf(out, "invalid_events: %u\n", + ipmi_get_stat(intf, invalid_events)); + out += sprintf(out, "events: %u\n", + ipmi_get_stat(intf, events)); return (out - ((char *) page)); } #endif /* CONFIG_PROC_FS */ int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, - read_proc_t *read_proc, write_proc_t *write_proc, + read_proc_t *read_proc, void *data, struct module *owner) { int rv = 0; @@ -1886,7 +1968,6 @@ int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, } else { file->data = data; file->read_proc = read_proc; - file->write_proc = write_proc; file->owner = owner; mutex_lock(&smi->proc_entry_lock); @@ -1899,6 +1980,7 @@ int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, return rv; } +EXPORT_SYMBOL(ipmi_smi_add_proc_entry); static int add_proc_entries(ipmi_smi_t smi, int num) { @@ -1909,23 +1991,22 @@ static int add_proc_entries(ipmi_smi_t smi, int num) smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); if (!smi->proc_dir) rv = -ENOMEM; - else { + else smi->proc_dir->owner = THIS_MODULE; - } if (rv == 0) rv = ipmi_smi_add_proc_entry(smi, "stats", - stat_file_read_proc, NULL, + stat_file_read_proc, smi, THIS_MODULE); if (rv == 0) rv = ipmi_smi_add_proc_entry(smi, "ipmb", - ipmb_file_read_proc, NULL, + ipmb_file_read_proc, smi, THIS_MODULE); if (rv == 0) rv = ipmi_smi_add_proc_entry(smi, "version", - version_file_read_proc, NULL, + version_file_read_proc, smi, THIS_MODULE); #endif /* CONFIG_PROC_FS */ @@ -2210,37 +2291,47 @@ static int create_files(struct bmc_device *bmc) err = device_create_file(&bmc->dev->dev, &bmc->device_id_attr); - if (err) goto out; + if (err) + goto out; err = device_create_file(&bmc->dev->dev, &bmc->provides_dev_sdrs_attr); - if (err) goto out_devid; + if (err) + goto out_devid; err = device_create_file(&bmc->dev->dev, &bmc->revision_attr); - if (err) goto out_sdrs; + if (err) + goto out_sdrs; err = device_create_file(&bmc->dev->dev, &bmc->firmware_rev_attr); - if (err) goto out_rev; + if (err) + goto out_rev; err = device_create_file(&bmc->dev->dev, &bmc->version_attr); - if (err) goto out_firm; + if (err) + goto out_firm; err = device_create_file(&bmc->dev->dev, &bmc->add_dev_support_attr); - if (err) goto out_version; + if (err) + goto out_version; err = device_create_file(&bmc->dev->dev, &bmc->manufacturer_id_attr); - if (err) goto out_add_dev; + if (err) + goto out_add_dev; err = device_create_file(&bmc->dev->dev, &bmc->product_id_attr); - if (err) goto out_manu; + if (err) + goto out_manu; if (bmc->id.aux_firmware_revision_set) { err = device_create_file(&bmc->dev->dev, &bmc->aux_firmware_rev_attr); - if (err) goto out_prod_id; + if (err) + goto out_prod_id; } if (bmc->guid_set) { err = device_create_file(&bmc->dev->dev, &bmc->guid_attr); - if (err) goto out_aux_firm; + if (err) + goto out_aux_firm; } return 0; @@ -2368,8 +2459,10 @@ static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum, "ipmi_msghandler:" " Unable to register bmc device: %d\n", rv); - /* Don't go to out_err, you can only do that if - the device is registered already. */ + /* + * Don't go to out_err, you can only do that if + * the device is registered already. + */ return rv; } @@ -2560,17 +2653,18 @@ channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) - && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) - { + && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) { /* It's the one we want */ if (msg->msg.data[0] != 0) { /* Got an error from the channel, just go on. */ if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) { - /* If the MC does not support this - command, that is legal. We just - assume it has one IPMB at channel - zero. */ + /* + * If the MC does not support this + * command, that is legal. We just + * assume it has one IPMB at channel + * zero. + */ intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; intf->channels[0].protocol @@ -2591,7 +2685,7 @@ channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) intf->channels[chan].medium = msg->msg.data[2] & 0x7f; intf->channels[chan].protocol = msg->msg.data[3] & 0x1f; - next_channel: + next_channel: intf->curr_channel++; if (intf->curr_channel >= IPMI_MAX_CHANNELS) wake_up(&intf->waitq); @@ -2619,6 +2713,7 @@ void ipmi_poll_interface(ipmi_user_t user) if (intf->handlers->poll) intf->handlers->poll(intf->send_info); } +EXPORT_SYMBOL(ipmi_poll_interface); int ipmi_register_smi(struct ipmi_smi_handlers *handlers, void *send_info, @@ -2633,14 +2728,18 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, ipmi_smi_t tintf; struct list_head *link; - /* Make sure the driver is actually initialized, this handles - problems with initialization order. */ + /* + * Make sure the driver is actually initialized, this handles + * problems with initialization order. + */ if (!initialized) { rv = ipmi_init_msghandler(); if (rv) return rv; - /* The init code doesn't return an error if it was turned - off, but it won't initialize. Check that. */ + /* + * The init code doesn't return an error if it was turned + * off, but it won't initialize. Check that. + */ if (!initialized) return -ENODEV; } @@ -2688,8 +2787,9 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, spin_lock_init(&intf->maintenance_mode_lock); INIT_LIST_HEAD(&intf->cmd_rcvrs); init_waitqueue_head(&intf->waitq); + for (i = 0; i < IPMI_NUM_STATS; i++) + atomic_set(&intf->stats[i], 0); - spin_lock_init(&intf->counter_lock); intf->proc_dir = NULL; mutex_lock(&smi_watchers_mutex); @@ -2717,11 +2817,12 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, get_guid(intf); if ((intf->ipmi_version_major > 1) - || ((intf->ipmi_version_major == 1) - && (intf->ipmi_version_minor >= 5))) - { - /* Start scanning the channels to see what is - available. */ + || ((intf->ipmi_version_major == 1) + && (intf->ipmi_version_minor >= 5))) { + /* + * Start scanning the channels to see what is + * available. + */ intf->null_user_handler = channel_handler; intf->curr_channel = 0; rv = send_channel_info_cmd(intf, 0); @@ -2769,6 +2870,7 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, return rv; } +EXPORT_SYMBOL(ipmi_register_smi); static void cleanup_smi_msgs(ipmi_smi_t intf) { @@ -2803,8 +2905,10 @@ int ipmi_unregister_smi(ipmi_smi_t intf) remove_proc_entries(intf); - /* Call all the watcher interfaces to tell them that - an interface is gone. */ + /* + * Call all the watcher interfaces to tell them that + * an interface is gone. + */ list_for_each_entry(w, &smi_watchers, link) w->smi_gone(intf_num); mutex_unlock(&smi_watchers_mutex); @@ -2812,22 +2916,21 @@ int ipmi_unregister_smi(ipmi_smi_t intf) kref_put(&intf->refcount, intf_free); return 0; } +EXPORT_SYMBOL(ipmi_unregister_smi); static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, struct ipmi_smi_msg *msg) { struct ipmi_ipmb_addr ipmb_addr; struct ipmi_recv_msg *recv_msg; - unsigned long flags; - - /* This is 11, not 10, because the response must contain a - * completion code. */ + /* + * This is 11, not 10, because the response must contain a + * completion code. + */ if (msg->rsp_size < 11) { /* Message not big enough, just ignore it. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->invalid_ipmb_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, invalid_ipmb_responses); return 0; } @@ -2841,37 +2944,38 @@ static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, ipmb_addr.channel = msg->rsp[3] & 0x0f; ipmb_addr.lun = msg->rsp[7] & 3; - /* It's a response from a remote entity. Look up the sequence - number and handle the response. */ + /* + * It's a response from a remote entity. Look up the sequence + * number and handle the response. + */ if (intf_find_seq(intf, msg->rsp[7] >> 2, msg->rsp[3] & 0x0f, msg->rsp[8], (msg->rsp[4] >> 2) & (~1), (struct ipmi_addr *) &(ipmb_addr), - &recv_msg)) - { - /* We were unable to find the sequence number, - so just nuke the message. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->unhandled_ipmb_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + &recv_msg)) { + /* + * We were unable to find the sequence number, + * so just nuke the message. + */ + ipmi_inc_stat(intf, unhandled_ipmb_responses); return 0; } memcpy(recv_msg->msg_data, &(msg->rsp[9]), msg->rsp_size - 9); - /* THe other fields matched, so no need to set them, except - for netfn, which needs to be the response that was - returned, not the request value. */ + /* + * The other fields matched, so no need to set them, except + * for netfn, which needs to be the response that was + * returned, not the request value. + */ recv_msg->msg.netfn = msg->rsp[4] >> 2; recv_msg->msg.data = recv_msg->msg_data; recv_msg->msg.data_len = msg->rsp_size - 10; recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; - spin_lock_irqsave(&intf->counter_lock, flags); - intf->handled_ipmb_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, handled_ipmb_responses); deliver_response(recv_msg); return 0; @@ -2888,14 +2992,11 @@ static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, ipmi_user_t user = NULL; struct ipmi_ipmb_addr *ipmb_addr; struct ipmi_recv_msg *recv_msg; - unsigned long flags; struct ipmi_smi_handlers *handlers; if (msg->rsp_size < 10) { /* Message not big enough, just ignore it. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, invalid_commands); return 0; } @@ -2919,19 +3020,17 @@ static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, if (user == NULL) { /* We didn't find a user, deliver an error response. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->unhandled_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, unhandled_commands); msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); msg->data[1] = IPMI_SEND_MSG_CMD; msg->data[2] = msg->rsp[3]; msg->data[3] = msg->rsp[6]; - msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); + msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; - /* rqseq/lun */ - msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); + /* rqseq/lun */ + msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); msg->data[8] = msg->rsp[8]; /* cmd */ msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE; msg->data[10] = ipmb_checksum(&(msg->data[6]), 4); @@ -2950,23 +3049,25 @@ static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, handlers = intf->handlers; if (handlers) { handlers->sender(intf->send_info, msg, 0); - /* We used the message, so return the value - that causes it to not be freed or - queued. */ + /* + * We used the message, so return the value + * that causes it to not be freed or + * queued. + */ rv = -1; } rcu_read_unlock(); } else { /* Deliver the message to the user. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->handled_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, handled_commands); recv_msg = ipmi_alloc_recv_msg(); if (!recv_msg) { - /* We couldn't allocate memory for the - message, so requeue it for handling - later. */ + /* + * We couldn't allocate memory for the + * message, so requeue it for handling + * later. + */ rv = 1; kref_put(&user->refcount, free_user); } else { @@ -2977,8 +3078,10 @@ static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, ipmb_addr->lun = msg->rsp[7] & 3; ipmb_addr->channel = msg->rsp[3] & 0xf; - /* Extract the rest of the message information - from the IPMB header.*/ + /* + * Extract the rest of the message information + * from the IPMB header. + */ recv_msg->user = user; recv_msg->recv_type = IPMI_CMD_RECV_TYPE; recv_msg->msgid = msg->rsp[7] >> 2; @@ -2986,8 +3089,10 @@ static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, recv_msg->msg.cmd = msg->rsp[8]; recv_msg->msg.data = recv_msg->msg_data; - /* We chop off 10, not 9 bytes because the checksum - at the end also needs to be removed. */ + /* + * We chop off 10, not 9 bytes because the checksum + * at the end also needs to be removed. + */ recv_msg->msg.data_len = msg->rsp_size - 10; memcpy(recv_msg->msg_data, &(msg->rsp[9]), @@ -3004,16 +3109,15 @@ static int handle_lan_get_msg_rsp(ipmi_smi_t intf, { struct ipmi_lan_addr lan_addr; struct ipmi_recv_msg *recv_msg; - unsigned long flags; - /* This is 13, not 12, because the response must contain a - * completion code. */ + /* + * This is 13, not 12, because the response must contain a + * completion code. + */ if (msg->rsp_size < 13) { /* Message not big enough, just ignore it. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->invalid_lan_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, invalid_lan_responses); return 0; } @@ -3030,37 +3134,38 @@ static int handle_lan_get_msg_rsp(ipmi_smi_t intf, lan_addr.privilege = msg->rsp[3] >> 4; lan_addr.lun = msg->rsp[9] & 3; - /* It's a response from a remote entity. Look up the sequence - number and handle the response. */ + /* + * It's a response from a remote entity. Look up the sequence + * number and handle the response. + */ if (intf_find_seq(intf, msg->rsp[9] >> 2, msg->rsp[3] & 0x0f, msg->rsp[10], (msg->rsp[6] >> 2) & (~1), (struct ipmi_addr *) &(lan_addr), - &recv_msg)) - { - /* We were unable to find the sequence number, - so just nuke the message. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->unhandled_lan_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + &recv_msg)) { + /* + * We were unable to find the sequence number, + * so just nuke the message. + */ + ipmi_inc_stat(intf, unhandled_lan_responses); return 0; } memcpy(recv_msg->msg_data, &(msg->rsp[11]), msg->rsp_size - 11); - /* The other fields matched, so no need to set them, except - for netfn, which needs to be the response that was - returned, not the request value. */ + /* + * The other fields matched, so no need to set them, except + * for netfn, which needs to be the response that was + * returned, not the request value. + */ recv_msg->msg.netfn = msg->rsp[6] >> 2; recv_msg->msg.data = recv_msg->msg_data; recv_msg->msg.data_len = msg->rsp_size - 12; recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; - spin_lock_irqsave(&intf->counter_lock, flags); - intf->handled_lan_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, handled_lan_responses); deliver_response(recv_msg); return 0; @@ -3077,13 +3182,10 @@ static int handle_lan_get_msg_cmd(ipmi_smi_t intf, ipmi_user_t user = NULL; struct ipmi_lan_addr *lan_addr; struct ipmi_recv_msg *recv_msg; - unsigned long flags; if (msg->rsp_size < 12) { /* Message not big enough, just ignore it. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->invalid_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, invalid_commands); return 0; } @@ -3107,23 +3209,23 @@ static int handle_lan_get_msg_cmd(ipmi_smi_t intf, if (user == NULL) { /* We didn't find a user, just give up. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->unhandled_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, unhandled_commands); - rv = 0; /* Don't do anything with these messages, just - allow them to be freed. */ + /* + * Don't do anything with these messages, just allow + * them to be freed. + */ + rv = 0; } else { /* Deliver the message to the user. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->handled_commands++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, handled_commands); recv_msg = ipmi_alloc_recv_msg(); if (!recv_msg) { - /* We couldn't allocate memory for the - message, so requeue it for handling - later. */ + /* + * We couldn't allocate memory for the + * message, so requeue it for handling later. + */ rv = 1; kref_put(&user->refcount, free_user); } else { @@ -3137,8 +3239,10 @@ static int handle_lan_get_msg_cmd(ipmi_smi_t intf, lan_addr->channel = msg->rsp[3] & 0xf; lan_addr->privilege = msg->rsp[3] >> 4; - /* Extract the rest of the message information - from the IPMB header.*/ + /* + * Extract the rest of the message information + * from the IPMB header. + */ recv_msg->user = user; recv_msg->recv_type = IPMI_CMD_RECV_TYPE; recv_msg->msgid = msg->rsp[9] >> 2; @@ -3146,8 +3250,10 @@ static int handle_lan_get_msg_cmd(ipmi_smi_t intf, recv_msg->msg.cmd = msg->rsp[10]; recv_msg->msg.data = recv_msg->msg_data; - /* We chop off 12, not 11 bytes because the checksum - at the end also needs to be removed. */ + /* + * We chop off 12, not 11 bytes because the checksum + * at the end also needs to be removed. + */ recv_msg->msg.data_len = msg->rsp_size - 12; memcpy(recv_msg->msg_data, &(msg->rsp[11]), @@ -3163,7 +3269,7 @@ static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg, struct ipmi_smi_msg *msg) { struct ipmi_system_interface_addr *smi_addr; - + recv_msg->msgid = 0; smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr); smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; @@ -3189,9 +3295,7 @@ static int handle_read_event_rsp(ipmi_smi_t intf, if (msg->rsp_size < 19) { /* Message is too small to be an IPMB event. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->invalid_events++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, invalid_events); return 0; } @@ -3204,12 +3308,12 @@ static int handle_read_event_rsp(ipmi_smi_t intf, spin_lock_irqsave(&intf->events_lock, flags); - spin_lock(&intf->counter_lock); - intf->events++; - spin_unlock(&intf->counter_lock); + ipmi_inc_stat(intf, events); - /* Allocate and fill in one message for every user that is getting - events. */ + /* + * Allocate and fill in one message for every user that is + * getting events. + */ rcu_read_lock(); list_for_each_entry_rcu(user, &intf->users, link) { if (!user->gets_events) @@ -3223,9 +3327,11 @@ static int handle_read_event_rsp(ipmi_smi_t intf, list_del(&recv_msg->link); ipmi_free_recv_msg(recv_msg); } - /* We couldn't allocate memory for the - message, so requeue it for handling - later. */ + /* + * We couldn't allocate memory for the + * message, so requeue it for handling + * later. + */ rv = 1; goto out; } @@ -3246,13 +3352,17 @@ static int handle_read_event_rsp(ipmi_smi_t intf, deliver_response(recv_msg); } } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) { - /* No one to receive the message, put it in queue if there's - not already too many things in the queue. */ + /* + * No one to receive the message, put it in queue if there's + * not already too many things in the queue. + */ recv_msg = ipmi_alloc_recv_msg(); if (!recv_msg) { - /* We couldn't allocate memory for the - message, so requeue it for handling - later. */ + /* + * We couldn't allocate memory for the + * message, so requeue it for handling + * later. + */ rv = 1; goto out; } @@ -3260,11 +3370,14 @@ static int handle_read_event_rsp(ipmi_smi_t intf, copy_event_into_recv_msg(recv_msg, msg); list_add_tail(&(recv_msg->link), &(intf->waiting_events)); intf->waiting_events_count++; - } else { - /* There's too many things in the queue, discard this - message. */ - printk(KERN_WARNING PFX "Event queue full, discarding an" - " incoming event\n"); + } else if (!intf->event_msg_printed) { + /* + * There's too many things in the queue, discard this + * message. + */ + printk(KERN_WARNING PFX "Event queue full, discarding" + " incoming events\n"); + intf->event_msg_printed = 1; } out: @@ -3277,16 +3390,15 @@ static int handle_bmc_rsp(ipmi_smi_t intf, struct ipmi_smi_msg *msg) { struct ipmi_recv_msg *recv_msg; - unsigned long flags; struct ipmi_user *user; recv_msg = (struct ipmi_recv_msg *) msg->user_data; - if (recv_msg == NULL) - { - printk(KERN_WARNING"IPMI message received with no owner. This\n" - "could be because of a malformed message, or\n" - "because of a hardware error. Contact your\n" - "hardware vender for assistance\n"); + if (recv_msg == NULL) { + printk(KERN_WARNING + "IPMI message received with no owner. This\n" + "could be because of a malformed message, or\n" + "because of a hardware error. Contact your\n" + "hardware vender for assistance\n"); return 0; } @@ -3294,16 +3406,12 @@ static int handle_bmc_rsp(ipmi_smi_t intf, /* Make sure the user still exists. */ if (user && !user->valid) { /* The user for the message went away, so give up. */ - spin_lock_irqsave(&intf->counter_lock, flags); - intf->unhandled_local_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, unhandled_local_responses); ipmi_free_recv_msg(recv_msg); } else { struct ipmi_system_interface_addr *smi_addr; - spin_lock_irqsave(&intf->counter_lock, flags); - intf->handled_local_responses++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, handled_local_responses); recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; recv_msg->msgid = msg->msgid; smi_addr = ((struct ipmi_system_interface_addr *) @@ -3324,9 +3432,11 @@ static int handle_bmc_rsp(ipmi_smi_t intf, return 0; } -/* Handle a new message. Return 1 if the message should be requeued, - 0 if the message should be freed, or -1 if the message should not - be freed or requeued. */ +/* + * Handle a new message. Return 1 if the message should be requeued, + * 0 if the message should be freed, or -1 if the message should not + * be freed or requeued. + */ static int handle_new_recv_msg(ipmi_smi_t intf, struct ipmi_smi_msg *msg) { @@ -3351,10 +3461,12 @@ static int handle_new_recv_msg(ipmi_smi_t intf, msg->rsp[1] = msg->data[1]; msg->rsp[2] = IPMI_ERR_UNSPECIFIED; msg->rsp_size = 3; - } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1))/* Netfn */ - || (msg->rsp[1] != msg->data[1])) /* Command */ - { - /* The response is not even marginally correct. */ + } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1)) + || (msg->rsp[1] != msg->data[1])) { + /* + * The NetFN and Command in the response is not even + * marginally correct. + */ printk(KERN_WARNING PFX "BMC returned incorrect response," " expected netfn %x cmd %x, got netfn %x cmd %x\n", (msg->data[0] >> 2) | 1, msg->data[1], @@ -3369,10 +3481,11 @@ static int handle_new_recv_msg(ipmi_smi_t intf, if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) && (msg->rsp[1] == IPMI_SEND_MSG_CMD) - && (msg->user_data != NULL)) - { - /* It's a response to a response we sent. For this we - deliver a send message response to the user. */ + && (msg->user_data != NULL)) { + /* + * It's a response to a response we sent. For this we + * deliver a send message response to the user. + */ struct ipmi_recv_msg *recv_msg = msg->user_data; requeue = 0; @@ -3398,8 +3511,7 @@ static int handle_new_recv_msg(ipmi_smi_t intf, recv_msg->msg_data[0] = msg->rsp[2]; deliver_response(recv_msg); } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) - && (msg->rsp[1] == IPMI_GET_MSG_CMD)) - { + && (msg->rsp[1] == IPMI_GET_MSG_CMD)) { /* It's from the receive queue. */ chan = msg->rsp[3] & 0xf; if (chan >= IPMI_MAX_CHANNELS) { @@ -3411,12 +3523,16 @@ static int handle_new_recv_msg(ipmi_smi_t intf, switch (intf->channels[chan].medium) { case IPMI_CHANNEL_MEDIUM_IPMB: if (msg->rsp[4] & 0x04) { - /* It's a response, so find the - requesting message and send it up. */ + /* + * It's a response, so find the + * requesting message and send it up. + */ requeue = handle_ipmb_get_msg_rsp(intf, msg); } else { - /* It's a command to the SMS from some other - entity. Handle that. */ + /* + * It's a command to the SMS from some other + * entity. Handle that. + */ requeue = handle_ipmb_get_msg_cmd(intf, msg); } break; @@ -3424,25 +3540,30 @@ static int handle_new_recv_msg(ipmi_smi_t intf, case IPMI_CHANNEL_MEDIUM_8023LAN: case IPMI_CHANNEL_MEDIUM_ASYNC: if (msg->rsp[6] & 0x04) { - /* It's a response, so find the - requesting message and send it up. */ + /* + * It's a response, so find the + * requesting message and send it up. + */ requeue = handle_lan_get_msg_rsp(intf, msg); } else { - /* It's a command to the SMS from some other - entity. Handle that. */ + /* + * It's a command to the SMS from some other + * entity. Handle that. + */ requeue = handle_lan_get_msg_cmd(intf, msg); } break; default: - /* We don't handle the channel type, so just - * free the message. */ + /* + * We don't handle the channel type, so just + * free the message. + */ requeue = 0; } } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) - && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) - { + && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) { /* It's an asyncronous event. */ requeue = handle_read_event_rsp(intf, msg); } else { @@ -3458,71 +3579,82 @@ static int handle_new_recv_msg(ipmi_smi_t intf, void ipmi_smi_msg_received(ipmi_smi_t intf, struct ipmi_smi_msg *msg) { - unsigned long flags; + unsigned long flags = 0; /* keep us warning-free. */ int rv; + int run_to_completion; if ((msg->data_size >= 2) && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) && (msg->data[1] == IPMI_SEND_MSG_CMD) - && (msg->user_data == NULL)) - { - /* This is the local response to a command send, start - the timer for these. The user_data will not be - NULL if this is a response send, and we will let - response sends just go through. */ - - /* Check for errors, if we get certain errors (ones - that mean basically we can try again later), we - ignore them and start the timer. Otherwise we - report the error immediately. */ + && (msg->user_data == NULL)) { + /* + * This is the local response to a command send, start + * the timer for these. The user_data will not be + * NULL if this is a response send, and we will let + * response sends just go through. + */ + + /* + * Check for errors, if we get certain errors (ones + * that mean basically we can try again later), we + * ignore them and start the timer. Otherwise we + * report the error immediately. + */ if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR) && (msg->rsp[2] != IPMI_BUS_ERR) - && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) - { + && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) { int chan = msg->rsp[3] & 0xf; /* Got an error sending the message, handle it. */ - spin_lock_irqsave(&intf->counter_lock, flags); if (chan >= IPMI_MAX_CHANNELS) ; /* This shouldn't happen */ else if ((intf->channels[chan].medium == IPMI_CHANNEL_MEDIUM_8023LAN) || (intf->channels[chan].medium == IPMI_CHANNEL_MEDIUM_ASYNC)) - intf->sent_lan_command_errs++; + ipmi_inc_stat(intf, sent_lan_command_errs); else - intf->sent_ipmb_command_errs++; - spin_unlock_irqrestore(&intf->counter_lock, flags); + ipmi_inc_stat(intf, sent_ipmb_command_errs); intf_err_seq(intf, msg->msgid, msg->rsp[2]); - } else { + } else /* The message was sent, start the timer. */ intf_start_seq_timer(intf, msg->msgid); - } ipmi_free_smi_msg(msg); goto out; } - /* To preserve message order, if the list is not empty, we - tack this message onto the end of the list. */ - spin_lock_irqsave(&intf->waiting_msgs_lock, flags); + /* + * To preserve message order, if the list is not empty, we + * tack this message onto the end of the list. + */ + run_to_completion = intf->run_to_completion; + if (!run_to_completion) + spin_lock_irqsave(&intf->waiting_msgs_lock, flags); if (!list_empty(&intf->waiting_msgs)) { list_add_tail(&msg->link, &intf->waiting_msgs); - spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); + if (!run_to_completion) + spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); goto out; } - spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); - + if (!run_to_completion) + spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); + rv = handle_new_recv_msg(intf, msg); if (rv > 0) { - /* Could not handle the message now, just add it to a - list to handle later. */ - spin_lock_irqsave(&intf->waiting_msgs_lock, flags); + /* + * Could not handle the message now, just add it to a + * list to handle later. + */ + run_to_completion = intf->run_to_completion; + if (!run_to_completion) + spin_lock_irqsave(&intf->waiting_msgs_lock, flags); list_add_tail(&msg->link, &intf->waiting_msgs); - spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); + if (!run_to_completion) + spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); } else if (rv == 0) { ipmi_free_smi_msg(msg); } @@ -3530,6 +3662,7 @@ void ipmi_smi_msg_received(ipmi_smi_t intf, out: return; } +EXPORT_SYMBOL(ipmi_smi_msg_received); void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) { @@ -3544,7 +3677,7 @@ void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) } rcu_read_unlock(); } - +EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); static struct ipmi_smi_msg * smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, @@ -3552,14 +3685,16 @@ smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, { struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg(); if (!smi_msg) - /* If we can't allocate the message, then just return, we - get 4 retries, so this should be ok. */ + /* + * If we can't allocate the message, then just return, we + * get 4 retries, so this should be ok. + */ return NULL; memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len); smi_msg->data_size = recv_msg->msg.data_len; smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid); - + #ifdef DEBUG_MSGING { int m; @@ -3594,28 +3729,26 @@ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, ent->inuse = 0; msg = ent->recv_msg; list_add_tail(&msg->link, timeouts); - spin_lock(&intf->counter_lock); if (ent->broadcast) - intf->timed_out_ipmb_broadcasts++; + ipmi_inc_stat(intf, timed_out_ipmb_broadcasts); else if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) - intf->timed_out_lan_commands++; + ipmi_inc_stat(intf, timed_out_lan_commands); else - intf->timed_out_ipmb_commands++; - spin_unlock(&intf->counter_lock); + ipmi_inc_stat(intf, timed_out_ipmb_commands); } else { struct ipmi_smi_msg *smi_msg; /* More retries, send again. */ - /* Start with the max timer, set to normal - timer after the message is sent. */ + /* + * Start with the max timer, set to normal timer after + * the message is sent. + */ ent->timeout = MAX_MSG_TIMEOUT; ent->retries_left--; - spin_lock(&intf->counter_lock); if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) - intf->retransmitted_lan_commands++; + ipmi_inc_stat(intf, retransmitted_lan_commands); else - intf->retransmitted_ipmb_commands++; - spin_unlock(&intf->counter_lock); + ipmi_inc_stat(intf, retransmitted_ipmb_commands); smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot, ent->seqid); @@ -3624,11 +3757,13 @@ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, spin_unlock_irqrestore(&intf->seq_lock, *flags); - /* Send the new message. We send with a zero - * priority. It timed out, I doubt time is - * that critical now, and high priority - * messages are really only for messages to the - * local MC, which don't get resent. */ + /* + * Send the new message. We send with a zero + * priority. It timed out, I doubt time is that + * critical now, and high priority messages are really + * only for messages to the local MC, which don't get + * resent. + */ handlers = intf->handlers; if (handlers) intf->handlers->sender(intf->send_info, @@ -3659,16 +3794,20 @@ static void ipmi_timeout_handler(long timeout_period) list_del(&smi_msg->link); ipmi_free_smi_msg(smi_msg); } else { - /* To preserve message order, quit if we - can't handle a message. */ + /* + * To preserve message order, quit if we + * can't handle a message. + */ break; } } spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); - /* Go through the seq table and find any messages that - have timed out, putting them in the timeouts - list. */ + /* + * Go through the seq table and find any messages that + * have timed out, putting them in the timeouts + * list. + */ INIT_LIST_HEAD(&timeouts); spin_lock_irqsave(&intf->seq_lock, flags); for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) @@ -3694,8 +3833,7 @@ static void ipmi_timeout_handler(long timeout_period) intf->auto_maintenance_timeout -= timeout_period; if (!intf->maintenance_mode - && (intf->auto_maintenance_timeout <= 0)) - { + && (intf->auto_maintenance_timeout <= 0)) { intf->maintenance_mode_enable = 0; maintenance_mode_update(intf); } @@ -3713,8 +3851,10 @@ static void ipmi_request_event(void) struct ipmi_smi_handlers *handlers; rcu_read_lock(); - /* Called from the timer, no need to check if handlers is - * valid. */ + /* + * Called from the timer, no need to check if handlers is + * valid. + */ list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { /* No event requests when in maintenance mode. */ if (intf->maintenance_mode_enable) @@ -3735,10 +3875,12 @@ static struct timer_list ipmi_timer; /* How many jiffies does it take to get to the timeout time. */ #define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000) -/* Request events from the queue every second (this is the number of - IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the - future, IPMI will add a way to know immediately if an event is in - the queue and this silliness can go away. */ +/* + * Request events from the queue every second (this is the number of + * IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the + * future, IPMI will add a way to know immediately if an event is in + * the queue and this silliness can go away. + */ #define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME)) static atomic_t stop_operation; @@ -3782,6 +3924,7 @@ struct ipmi_smi_msg *ipmi_alloc_smi_msg(void) } return rv; } +EXPORT_SYMBOL(ipmi_alloc_smi_msg); static void free_recv_msg(struct ipmi_recv_msg *msg) { @@ -3789,7 +3932,7 @@ static void free_recv_msg(struct ipmi_recv_msg *msg) kfree(msg); } -struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) +static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) { struct ipmi_recv_msg *rv; @@ -3808,6 +3951,7 @@ void ipmi_free_recv_msg(struct ipmi_recv_msg *msg) kref_put(&msg->user->refcount, free_user); msg->done(msg); } +EXPORT_SYMBOL(ipmi_free_recv_msg); #ifdef CONFIG_IPMI_PANIC_EVENT @@ -3825,8 +3969,7 @@ static void event_receiver_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE) && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD) - && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) - { + && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { /* A get event receiver command, save it. */ intf->event_receiver = msg->msg.data[1]; intf->event_receiver_lun = msg->msg.data[2] & 0x3; @@ -3838,10 +3981,11 @@ static void device_id_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD) - && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) - { - /* A get device id command, save if we are an event - receiver or generator. */ + && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { + /* + * A get device id command, save if we are an event + * receiver or generator. + */ intf->local_sel_device = (msg->msg.data[6] >> 2) & 1; intf->local_event_generator = (msg->msg.data[6] >> 5) & 1; } @@ -3874,8 +4018,10 @@ static void send_panic_events(char *str) data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */ data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */ - /* Put a few breadcrumbs in. Hopefully later we can add more things - to make the panic events more useful. */ + /* + * Put a few breadcrumbs in. Hopefully later we can add more things + * to make the panic events more useful. + */ if (str) { data[3] = str[0]; data[6] = str[1]; @@ -3891,6 +4037,7 @@ static void send_panic_events(char *str) /* Interface is not ready. */ continue; + intf->run_to_completion = 1; /* Send the event announcing the panic. */ intf->handlers->set_run_to_completion(intf->send_info, 1); i_ipmi_request(NULL, @@ -3908,9 +4055,11 @@ static void send_panic_events(char *str) } #ifdef CONFIG_IPMI_PANIC_STRING - /* On every interface, dump a bunch of OEM event holding the - string. */ - if (!str) + /* + * On every interface, dump a bunch of OEM event holding the + * string. + */ + if (!str) return; /* For every registered interface, send the event. */ @@ -3931,11 +4080,13 @@ static void send_panic_events(char *str) */ smp_rmb(); - /* First job here is to figure out where to send the - OEM events. There's no way in IPMI to send OEM - events using an event send command, so we have to - find the SEL to put them in and stick them in - there. */ + /* + * First job here is to figure out where to send the + * OEM events. There's no way in IPMI to send OEM + * events using an event send command, so we have to + * find the SEL to put them in and stick them in + * there. + */ /* Get capabilities from the get device id. */ intf->local_sel_device = 0; @@ -3983,24 +4134,29 @@ static void send_panic_events(char *str) } intf->null_user_handler = NULL; - /* Validate the event receiver. The low bit must not - be 1 (it must be a valid IPMB address), it cannot - be zero, and it must not be my address. */ - if (((intf->event_receiver & 1) == 0) + /* + * Validate the event receiver. The low bit must not + * be 1 (it must be a valid IPMB address), it cannot + * be zero, and it must not be my address. + */ + if (((intf->event_receiver & 1) == 0) && (intf->event_receiver != 0) - && (intf->event_receiver != intf->channels[0].address)) - { - /* The event receiver is valid, send an IPMB - message. */ + && (intf->event_receiver != intf->channels[0].address)) { + /* + * The event receiver is valid, send an IPMB + * message. + */ ipmb = (struct ipmi_ipmb_addr *) &addr; ipmb->addr_type = IPMI_IPMB_ADDR_TYPE; ipmb->channel = 0; /* FIXME - is this right? */ ipmb->lun = intf->event_receiver_lun; ipmb->slave_addr = intf->event_receiver; } else if (intf->local_sel_device) { - /* The event receiver was not valid (or was - me), but I am an SEL device, just dump it - in my SEL. */ + /* + * The event receiver was not valid (or was + * me), but I am an SEL device, just dump it + * in my SEL. + */ si = (struct ipmi_system_interface_addr *) &addr; si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; si->channel = IPMI_BMC_CHANNEL; @@ -4008,7 +4164,6 @@ static void send_panic_events(char *str) } else continue; /* No where to send the event. */ - msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */ msg.cmd = IPMI_ADD_SEL_ENTRY_CMD; msg.data = data; @@ -4025,8 +4180,10 @@ static void send_panic_events(char *str) data[2] = 0xf0; /* OEM event without timestamp. */ data[3] = intf->channels[0].address; data[4] = j++; /* sequence # */ - /* Always give 11 bytes, so strncpy will fill - it with zeroes for me. */ + /* + * Always give 11 bytes, so strncpy will fill + * it with zeroes for me. + */ strncpy(data+5, p, 11); p += size; @@ -4043,7 +4200,7 @@ static void send_panic_events(char *str) intf->channels[0].lun, 0, 1); /* no retry, and no wait. */ } - } + } #endif /* CONFIG_IPMI_PANIC_STRING */ } #endif /* CONFIG_IPMI_PANIC_EVENT */ @@ -4052,7 +4209,7 @@ static int has_panicked; static int panic_event(struct notifier_block *this, unsigned long event, - void *ptr) + void *ptr) { ipmi_smi_t intf; @@ -4066,6 +4223,7 @@ static int panic_event(struct notifier_block *this, /* Interface is not ready. */ continue; + intf->run_to_completion = 1; intf->handlers->set_run_to_completion(intf->send_info, 1); } @@ -4133,11 +4291,16 @@ static __exit void cleanup_ipmi(void) atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block); - /* This can't be called if any interfaces exist, so no worry about - shutting down the interfaces. */ + /* + * This can't be called if any interfaces exist, so no worry + * about shutting down the interfaces. + */ - /* Tell the timer to stop, then wait for it to stop. This avoids - problems with race conditions removing the timer here. */ + /* + * Tell the timer to stop, then wait for it to stop. This + * avoids problems with race conditions removing the timer + * here. + */ atomic_inc(&stop_operation); del_timer_sync(&ipmi_timer); @@ -4164,31 +4327,6 @@ module_exit(cleanup_ipmi); module_init(ipmi_init_msghandler_mod); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); -MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI interface."); +MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI" + " interface."); MODULE_VERSION(IPMI_DRIVER_VERSION); - -EXPORT_SYMBOL(ipmi_create_user); -EXPORT_SYMBOL(ipmi_destroy_user); -EXPORT_SYMBOL(ipmi_get_version); -EXPORT_SYMBOL(ipmi_request_settime); -EXPORT_SYMBOL(ipmi_request_supply_msgs); -EXPORT_SYMBOL(ipmi_poll_interface); -EXPORT_SYMBOL(ipmi_register_smi); -EXPORT_SYMBOL(ipmi_unregister_smi); -EXPORT_SYMBOL(ipmi_register_for_cmd); -EXPORT_SYMBOL(ipmi_unregister_for_cmd); -EXPORT_SYMBOL(ipmi_smi_msg_received); -EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); -EXPORT_SYMBOL(ipmi_alloc_smi_msg); -EXPORT_SYMBOL(ipmi_addr_length); -EXPORT_SYMBOL(ipmi_validate_addr); -EXPORT_SYMBOL(ipmi_set_gets_events); -EXPORT_SYMBOL(ipmi_smi_watcher_register); -EXPORT_SYMBOL(ipmi_smi_watcher_unregister); -EXPORT_SYMBOL(ipmi_set_my_address); -EXPORT_SYMBOL(ipmi_get_my_address); -EXPORT_SYMBOL(ipmi_set_my_LUN); -EXPORT_SYMBOL(ipmi_get_my_LUN); -EXPORT_SYMBOL(ipmi_smi_add_proc_entry); -EXPORT_SYMBOL(ipmi_user_set_run_to_completion); -EXPORT_SYMBOL(ipmi_free_recv_msg); diff --git a/drivers/char/ipmi/ipmi_poweroff.c b/drivers/char/ipmi/ipmi_poweroff.c index b86186de7f0..a261bd735df 100644 --- a/drivers/char/ipmi/ipmi_poweroff.c +++ b/drivers/char/ipmi/ipmi_poweroff.c @@ -87,7 +87,10 @@ MODULE_PARM_DESC(ifnum_to_use, "The interface number to use for the watchdog " /* parameter definition to allow user to flag power cycle */ module_param(poweroff_powercycle, int, 0644); -MODULE_PARM_DESC(poweroff_powercycle, " Set to non-zero to enable power cycle instead of power down. Power cycle is contingent on hardware support, otherwise it defaults back to power down."); +MODULE_PARM_DESC(poweroff_powercycle, + " Set to non-zero to enable power cycle instead of power" + " down. Power cycle is contingent on hardware support," + " otherwise it defaults back to power down."); /* Stuff from the get device id command. */ static unsigned int mfg_id; @@ -95,22 +98,25 @@ static unsigned int prod_id; static unsigned char capabilities; static unsigned char ipmi_version; -/* We use our own messages for this operation, we don't let the system - allocate them, since we may be in a panic situation. The whole - thing is single-threaded, anyway, so multiple messages are not - required. */ +/* + * We use our own messages for this operation, we don't let the system + * allocate them, since we may be in a panic situation. The whole + * thing is single-threaded, anyway, so multiple messages are not + * required. + */ +static atomic_t dummy_count = ATOMIC_INIT(0); static void dummy_smi_free(struct ipmi_smi_msg *msg) { + atomic_dec(&dummy_count); } static void dummy_recv_free(struct ipmi_recv_msg *msg) { + atomic_dec(&dummy_count); } -static struct ipmi_smi_msg halt_smi_msg = -{ +static struct ipmi_smi_msg halt_smi_msg = { .done = dummy_smi_free }; -static struct ipmi_recv_msg halt_recv_msg = -{ +static struct ipmi_recv_msg halt_recv_msg = { .done = dummy_recv_free }; @@ -127,8 +133,7 @@ static void receive_handler(struct ipmi_recv_msg *recv_msg, void *handler_data) complete(comp); } -static struct ipmi_user_hndl ipmi_poweroff_handler = -{ +static struct ipmi_user_hndl ipmi_poweroff_handler = { .ipmi_recv_hndl = receive_handler }; @@ -152,17 +157,28 @@ static int ipmi_request_wait_for_response(ipmi_user_t user, return halt_recv_msg.msg.data[0]; } -/* We are in run-to-completion mode, no completion is desired. */ +/* Wait for message to complete, spinning. */ static int ipmi_request_in_rc_mode(ipmi_user_t user, struct ipmi_addr *addr, struct kernel_ipmi_msg *send_msg) { int rv; + atomic_set(&dummy_count, 2); rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, NULL, &halt_smi_msg, &halt_recv_msg, 0); - if (rv) + if (rv) { + atomic_set(&dummy_count, 0); return rv; + } + + /* + * Spin until our message is done. + */ + while (atomic_read(&dummy_count) > 0) { + ipmi_poll_interface(user); + cpu_relax(); + } return halt_recv_msg.msg.data[0]; } @@ -184,47 +200,47 @@ static int ipmi_request_in_rc_mode(ipmi_user_t user, static void (*atca_oem_poweroff_hook)(ipmi_user_t user); -static void pps_poweroff_atca (ipmi_user_t user) +static void pps_poweroff_atca(ipmi_user_t user) { - struct ipmi_system_interface_addr smi_addr; - struct kernel_ipmi_msg send_msg; - int rv; - /* - * Configure IPMI address for local access - */ - smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; - smi_addr.channel = IPMI_BMC_CHANNEL; - smi_addr.lun = 0; - - printk(KERN_INFO PFX "PPS powerdown hook used"); - - send_msg.netfn = IPMI_NETFN_OEM; - send_msg.cmd = IPMI_ATCA_PPS_GRACEFUL_RESTART; - send_msg.data = IPMI_ATCA_PPS_IANA; - send_msg.data_len = 3; - rv = ipmi_request_in_rc_mode(user, - (struct ipmi_addr *) &smi_addr, - &send_msg); - if (rv && rv != IPMI_UNKNOWN_ERR_COMPLETION_CODE) { - printk(KERN_ERR PFX "Unable to send ATCA ," - " IPMI error 0x%x\n", rv); - } + struct ipmi_system_interface_addr smi_addr; + struct kernel_ipmi_msg send_msg; + int rv; + /* + * Configure IPMI address for local access + */ + smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; + smi_addr.channel = IPMI_BMC_CHANNEL; + smi_addr.lun = 0; + + printk(KERN_INFO PFX "PPS powerdown hook used"); + + send_msg.netfn = IPMI_NETFN_OEM; + send_msg.cmd = IPMI_ATCA_PPS_GRACEFUL_RESTART; + send_msg.data = IPMI_ATCA_PPS_IANA; + send_msg.data_len = 3; + rv = ipmi_request_in_rc_mode(user, + (struct ipmi_addr *) &smi_addr, + &send_msg); + if (rv && rv != IPMI_UNKNOWN_ERR_COMPLETION_CODE) { + printk(KERN_ERR PFX "Unable to send ATCA ," + " IPMI error 0x%x\n", rv); + } return; } -static int ipmi_atca_detect (ipmi_user_t user) +static int ipmi_atca_detect(ipmi_user_t user) { struct ipmi_system_interface_addr smi_addr; struct kernel_ipmi_msg send_msg; int rv; unsigned char data[1]; - /* - * Configure IPMI address for local access - */ - smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; - smi_addr.channel = IPMI_BMC_CHANNEL; - smi_addr.lun = 0; + /* + * Configure IPMI address for local access + */ + smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; + smi_addr.channel = IPMI_BMC_CHANNEL; + smi_addr.lun = 0; /* * Use get address info to check and see if we are ATCA @@ -238,28 +254,30 @@ static int ipmi_atca_detect (ipmi_user_t user) (struct ipmi_addr *) &smi_addr, &send_msg); - printk(KERN_INFO PFX "ATCA Detect mfg 0x%X prod 0x%X\n", mfg_id, prod_id); - if((mfg_id == IPMI_MOTOROLA_MANUFACTURER_ID) - && (prod_id == IPMI_MOTOROLA_PPS_IPMC_PRODUCT_ID)) { - printk(KERN_INFO PFX "Installing Pigeon Point Systems Poweroff Hook\n"); + printk(KERN_INFO PFX "ATCA Detect mfg 0x%X prod 0x%X\n", + mfg_id, prod_id); + if ((mfg_id == IPMI_MOTOROLA_MANUFACTURER_ID) + && (prod_id == IPMI_MOTOROLA_PPS_IPMC_PRODUCT_ID)) { + printk(KERN_INFO PFX + "Installing Pigeon Point Systems Poweroff Hook\n"); atca_oem_poweroff_hook = pps_poweroff_atca; } return !rv; } -static void ipmi_poweroff_atca (ipmi_user_t user) +static void ipmi_poweroff_atca(ipmi_user_t user) { struct ipmi_system_interface_addr smi_addr; struct kernel_ipmi_msg send_msg; int rv; unsigned char data[4]; - /* - * Configure IPMI address for local access - */ - smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; - smi_addr.channel = IPMI_BMC_CHANNEL; - smi_addr.lun = 0; + /* + * Configure IPMI address for local access + */ + smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; + smi_addr.channel = IPMI_BMC_CHANNEL; + smi_addr.lun = 0; printk(KERN_INFO PFX "Powering down via ATCA power command\n"); @@ -273,23 +291,24 @@ static void ipmi_poweroff_atca (ipmi_user_t user) data[2] = 0; /* Power Level */ data[3] = 0; /* Don't change saved presets */ send_msg.data = data; - send_msg.data_len = sizeof (data); + send_msg.data_len = sizeof(data); rv = ipmi_request_in_rc_mode(user, (struct ipmi_addr *) &smi_addr, &send_msg); - /** At this point, the system may be shutting down, and most - ** serial drivers (if used) will have interrupts turned off - ** it may be better to ignore IPMI_UNKNOWN_ERR_COMPLETION_CODE - ** return code - **/ - if (rv && rv != IPMI_UNKNOWN_ERR_COMPLETION_CODE) { + /* + * At this point, the system may be shutting down, and most + * serial drivers (if used) will have interrupts turned off + * it may be better to ignore IPMI_UNKNOWN_ERR_COMPLETION_CODE + * return code + */ + if (rv && rv != IPMI_UNKNOWN_ERR_COMPLETION_CODE) { printk(KERN_ERR PFX "Unable to send ATCA powerdown message," " IPMI error 0x%x\n", rv); goto out; } - if(atca_oem_poweroff_hook) - return atca_oem_poweroff_hook(user); + if (atca_oem_poweroff_hook) + atca_oem_poweroff_hook(user); out: return; } @@ -310,13 +329,13 @@ static void ipmi_poweroff_atca (ipmi_user_t user) #define IPMI_CPI1_PRODUCT_ID 0x000157 #define IPMI_CPI1_MANUFACTURER_ID 0x0108 -static int ipmi_cpi1_detect (ipmi_user_t user) +static int ipmi_cpi1_detect(ipmi_user_t user) { return ((mfg_id == IPMI_CPI1_MANUFACTURER_ID) && (prod_id == IPMI_CPI1_PRODUCT_ID)); } -static void ipmi_poweroff_cpi1 (ipmi_user_t user) +static void ipmi_poweroff_cpi1(ipmi_user_t user) { struct ipmi_system_interface_addr smi_addr; struct ipmi_ipmb_addr ipmb_addr; @@ -328,12 +347,12 @@ static void ipmi_poweroff_cpi1 (ipmi_user_t user) unsigned char aer_addr; unsigned char aer_lun; - /* - * Configure IPMI address for local access - */ - smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; - smi_addr.channel = IPMI_BMC_CHANNEL; - smi_addr.lun = 0; + /* + * Configure IPMI address for local access + */ + smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; + smi_addr.channel = IPMI_BMC_CHANNEL; + smi_addr.lun = 0; printk(KERN_INFO PFX "Powering down via CPI1 power command\n"); @@ -425,7 +444,7 @@ static void ipmi_poweroff_cpi1 (ipmi_user_t user) */ #define DELL_IANA_MFR_ID {0xA2, 0x02, 0x00} -static int ipmi_dell_chassis_detect (ipmi_user_t user) +static int ipmi_dell_chassis_detect(ipmi_user_t user) { const char ipmi_version_major = ipmi_version & 0xF; const char ipmi_version_minor = (ipmi_version >> 4) & 0xF; @@ -444,25 +463,25 @@ static int ipmi_dell_chassis_detect (ipmi_user_t user) #define IPMI_NETFN_CHASSIS_REQUEST 0 #define IPMI_CHASSIS_CONTROL_CMD 0x02 -static int ipmi_chassis_detect (ipmi_user_t user) +static int ipmi_chassis_detect(ipmi_user_t user) { /* Chassis support, use it. */ return (capabilities & 0x80); } -static void ipmi_poweroff_chassis (ipmi_user_t user) +static void ipmi_poweroff_chassis(ipmi_user_t user) { struct ipmi_system_interface_addr smi_addr; struct kernel_ipmi_msg send_msg; int rv; unsigned char data[1]; - /* - * Configure IPMI address for local access - */ - smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; - smi_addr.channel = IPMI_BMC_CHANNEL; - smi_addr.lun = 0; + /* + * Configure IPMI address for local access + */ + smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; + smi_addr.channel = IPMI_BMC_CHANNEL; + smi_addr.lun = 0; powercyclefailed: printk(KERN_INFO PFX "Powering %s via IPMI chassis control command\n", @@ -525,15 +544,13 @@ static struct poweroff_function poweroff_functions[] = { /* Called on a powerdown request. */ -static void ipmi_poweroff_function (void) +static void ipmi_poweroff_function(void) { if (!ready) return; /* Use run-to-completion mode, since interrupts may be off. */ - ipmi_user_set_run_to_completion(ipmi_user, 1); specific_poweroff_func(ipmi_user); - ipmi_user_set_run_to_completion(ipmi_user, 0); } /* Wait for an IPMI interface to be installed, the first one installed @@ -561,13 +578,13 @@ static void ipmi_po_new_smi(int if_num, struct device *device) ipmi_ifnum = if_num; - /* - * Do a get device ide and store some results, since this is + /* + * Do a get device ide and store some results, since this is * used by several functions. - */ - smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; - smi_addr.channel = IPMI_BMC_CHANNEL; - smi_addr.lun = 0; + */ + smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; + smi_addr.channel = IPMI_BMC_CHANNEL; + smi_addr.lun = 0; send_msg.netfn = IPMI_NETFN_APP_REQUEST; send_msg.cmd = IPMI_GET_DEVICE_ID_CMD; @@ -632,8 +649,7 @@ static void ipmi_po_smi_gone(int if_num) pm_power_off = old_poweroff_func; } -static struct ipmi_smi_watcher smi_watcher = -{ +static struct ipmi_smi_watcher smi_watcher = { .owner = THIS_MODULE, .new_smi = ipmi_po_new_smi, .smi_gone = ipmi_po_smi_gone @@ -675,12 +691,12 @@ static struct ctl_table_header *ipmi_table_header; /* * Startup and shutdown functions. */ -static int ipmi_poweroff_init (void) +static int ipmi_poweroff_init(void) { int rv; - printk (KERN_INFO "Copyright (C) 2004 MontaVista Software -" - " IPMI Powerdown via sys_reboot.\n"); + printk(KERN_INFO "Copyright (C) 2004 MontaVista Software -" + " IPMI Powerdown via sys_reboot.\n"); if (poweroff_powercycle) printk(KERN_INFO PFX "Power cycle is enabled.\n"); diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index 4f560d0bb80..5a5455585c1 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -80,7 +80,7 @@ #define SI_USEC_PER_JIFFY (1000000/HZ) #define SI_TIMEOUT_JIFFIES (SI_TIMEOUT_TIME_USEC/SI_USEC_PER_JIFFY) #define SI_SHORT_TIMEOUT_USEC 250 /* .25ms when the SM request a - short timeout */ + short timeout */ /* Bit for BMC global enables. */ #define IPMI_BMC_RCV_MSG_INTR 0x01 @@ -114,14 +114,61 @@ static char *si_to_str[] = { "kcs", "smic", "bt" }; #define DEVICE_NAME "ipmi_si" -static struct device_driver ipmi_driver = -{ +static struct device_driver ipmi_driver = { .name = DEVICE_NAME, .bus = &platform_bus_type }; -struct smi_info -{ + +/* + * Indexes into stats[] in smi_info below. + */ +enum si_stat_indexes { + /* + * Number of times the driver requested a timer while an operation + * was in progress. + */ + SI_STAT_short_timeouts = 0, + + /* + * Number of times the driver requested a timer while nothing was in + * progress. + */ + SI_STAT_long_timeouts, + + /* Number of times the interface was idle while being polled. */ + SI_STAT_idles, + + /* Number of interrupts the driver handled. */ + SI_STAT_interrupts, + + /* Number of time the driver got an ATTN from the hardware. */ + SI_STAT_attentions, + + /* Number of times the driver requested flags from the hardware. */ + SI_STAT_flag_fetches, + + /* Number of times the hardware didn't follow the state machine. */ + SI_STAT_hosed_count, + + /* Number of completed messages. */ + SI_STAT_complete_transactions, + + /* Number of IPMI events received from the hardware. */ + SI_STAT_events, + + /* Number of watchdog pretimeouts. */ + SI_STAT_watchdog_pretimeouts, + + /* Number of asyncronous messages received. */ + SI_STAT_incoming_messages, + + + /* This *must* remain last, add new values above this. */ + SI_NUM_STATS +}; + +struct smi_info { int intf_num; ipmi_smi_t intf; struct si_sm_data *si_sm; @@ -134,8 +181,10 @@ struct smi_info struct ipmi_smi_msg *curr_msg; enum si_intf_state si_state; - /* Used to handle the various types of I/O that can occur with - IPMI */ + /* + * Used to handle the various types of I/O that can occur with + * IPMI + */ struct si_sm_io io; int (*io_setup)(struct smi_info *info); void (*io_cleanup)(struct smi_info *info); @@ -146,15 +195,18 @@ struct smi_info void (*addr_source_cleanup)(struct smi_info *info); void *addr_source_data; - /* Per-OEM handler, called from handle_flags(). - Returns 1 when handle_flags() needs to be re-run - or 0 indicating it set si_state itself. - */ + /* + * Per-OEM handler, called from handle_flags(). Returns 1 + * when handle_flags() needs to be re-run or 0 indicating it + * set si_state itself. + */ int (*oem_data_avail_handler)(struct smi_info *smi_info); - /* Flags from the last GET_MSG_FLAGS command, used when an ATTN - is set to hold the flags until we are done handling everything - from the flags. */ + /* + * Flags from the last GET_MSG_FLAGS command, used when an ATTN + * is set to hold the flags until we are done handling everything + * from the flags. + */ #define RECEIVE_MSG_AVAIL 0x01 #define EVENT_MSG_BUFFER_FULL 0x02 #define WDT_PRE_TIMEOUT_INT 0x08 @@ -162,25 +214,31 @@ struct smi_info #define OEM1_DATA_AVAIL 0x40 #define OEM2_DATA_AVAIL 0x80 #define OEM_DATA_AVAIL (OEM0_DATA_AVAIL | \ - OEM1_DATA_AVAIL | \ - OEM2_DATA_AVAIL) + OEM1_DATA_AVAIL | \ + OEM2_DATA_AVAIL) unsigned char msg_flags; - /* If set to true, this will request events the next time the - state machine is idle. */ + /* + * If set to true, this will request events the next time the + * state machine is idle. + */ atomic_t req_events; - /* If true, run the state machine to completion on every send - call. Generally used after a panic to make sure stuff goes - out. */ + /* + * If true, run the state machine to completion on every send + * call. Generally used after a panic to make sure stuff goes + * out. + */ int run_to_completion; /* The I/O port of an SI interface. */ int port; - /* The space between start addresses of the two ports. For - instance, if the first port is 0xca2 and the spacing is 4, then - the second port is 0xca6. */ + /* + * The space between start addresses of the two ports. For + * instance, if the first port is 0xca2 and the spacing is 4, then + * the second port is 0xca6. + */ unsigned int spacing; /* zero if no irq; */ @@ -195,10 +253,12 @@ struct smi_info /* Used to gracefully stop the timer without race conditions. */ atomic_t stop_operation; - /* The driver will disable interrupts when it gets into a - situation where it cannot handle messages due to lack of - memory. Once that situation clears up, it will re-enable - interrupts. */ + /* + * The driver will disable interrupts when it gets into a + * situation where it cannot handle messages due to lack of + * memory. Once that situation clears up, it will re-enable + * interrupts. + */ int interrupt_disabled; /* From the get device id response... */ @@ -208,33 +268,28 @@ struct smi_info struct device *dev; struct platform_device *pdev; - /* True if we allocated the device, false if it came from - * someplace else (like PCI). */ + /* + * True if we allocated the device, false if it came from + * someplace else (like PCI). + */ int dev_registered; /* Slave address, could be reported from DMI. */ unsigned char slave_addr; /* Counters and things for the proc filesystem. */ - spinlock_t count_lock; - unsigned long short_timeouts; - unsigned long long_timeouts; - unsigned long timeout_restarts; - unsigned long idles; - unsigned long interrupts; - unsigned long attentions; - unsigned long flag_fetches; - unsigned long hosed_count; - unsigned long complete_transactions; - unsigned long events; - unsigned long watchdog_pretimeouts; - unsigned long incoming_messages; - - struct task_struct *thread; + atomic_t stats[SI_NUM_STATS]; + + struct task_struct *thread; struct list_head link; }; +#define smi_inc_stat(smi, stat) \ + atomic_inc(&(smi)->stats[SI_STAT_ ## stat]) +#define smi_get_stat(smi, stat) \ + ((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat])) + #define SI_MAX_PARMS 4 static int force_kipmid[SI_MAX_PARMS]; @@ -246,7 +301,7 @@ static int try_smi_init(struct smi_info *smi); static void cleanup_one_si(struct smi_info *to_clean); static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list); -static int register_xaction_notifier(struct notifier_block * nb) +static int register_xaction_notifier(struct notifier_block *nb) { return atomic_notifier_chain_register(&xaction_notifier_list, nb); } @@ -255,7 +310,7 @@ static void deliver_recv_msg(struct smi_info *smi_info, struct ipmi_smi_msg *msg) { /* Deliver the message to the upper layer with the lock - released. */ + released. */ spin_unlock(&(smi_info->si_lock)); ipmi_smi_msg_received(smi_info->intf, msg); spin_lock(&(smi_info->si_lock)); @@ -287,9 +342,12 @@ static enum si_sm_result start_next_msg(struct smi_info *smi_info) struct timeval t; #endif - /* No need to save flags, we aleady have interrupts off and we - already hold the SMI lock. */ - spin_lock(&(smi_info->msg_lock)); + /* + * No need to save flags, we aleady have interrupts off and we + * already hold the SMI lock. + */ + if (!smi_info->run_to_completion) + spin_lock(&(smi_info->msg_lock)); /* Pick the high priority queue first. */ if (!list_empty(&(smi_info->hp_xmit_msgs))) { @@ -310,7 +368,7 @@ static enum si_sm_result start_next_msg(struct smi_info *smi_info) link); #ifdef DEBUG_TIMING do_gettimeofday(&t); - printk("**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec); + printk(KERN_DEBUG "**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec); #endif err = atomic_notifier_call_chain(&xaction_notifier_list, 0, smi_info); @@ -322,14 +380,14 @@ static enum si_sm_result start_next_msg(struct smi_info *smi_info) smi_info->si_sm, smi_info->curr_msg->data, smi_info->curr_msg->data_size); - if (err) { + if (err) return_hosed_msg(smi_info, err); - } rv = SI_SM_CALL_WITHOUT_DELAY; } - out: - spin_unlock(&(smi_info->msg_lock)); + out: + if (!smi_info->run_to_completion) + spin_unlock(&(smi_info->msg_lock)); return rv; } @@ -338,8 +396,10 @@ static void start_enable_irq(struct smi_info *smi_info) { unsigned char msg[2]; - /* If we are enabling interrupts, we have to tell the - BMC to use them. */ + /* + * If we are enabling interrupts, we have to tell the + * BMC to use them. + */ msg[0] = (IPMI_NETFN_APP_REQUEST << 2); msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; @@ -371,10 +431,12 @@ static void start_clear_flags(struct smi_info *smi_info) smi_info->si_state = SI_CLEARING_FLAGS; } -/* When we have a situtaion where we run out of memory and cannot - allocate messages, we just leave them in the BMC and run the system - polled until we can allocate some memory. Once we have some - memory, we will re-enable the interrupt. */ +/* + * When we have a situtaion where we run out of memory and cannot + * allocate messages, we just leave them in the BMC and run the system + * polled until we can allocate some memory. Once we have some + * memory, we will re-enable the interrupt. + */ static inline void disable_si_irq(struct smi_info *smi_info) { if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { @@ -396,9 +458,7 @@ static void handle_flags(struct smi_info *smi_info) retry: if (smi_info->msg_flags & WDT_PRE_TIMEOUT_INT) { /* Watchdog pre-timeout */ - spin_lock(&smi_info->count_lock); - smi_info->watchdog_pretimeouts++; - spin_unlock(&smi_info->count_lock); + smi_inc_stat(smi_info, watchdog_pretimeouts); start_clear_flags(smi_info); smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT; @@ -444,12 +504,11 @@ static void handle_flags(struct smi_info *smi_info) smi_info->curr_msg->data_size); smi_info->si_state = SI_GETTING_EVENTS; } else if (smi_info->msg_flags & OEM_DATA_AVAIL && - smi_info->oem_data_avail_handler) { + smi_info->oem_data_avail_handler) { if (smi_info->oem_data_avail_handler(smi_info)) goto retry; - } else { + } else smi_info->si_state = SI_NORMAL; - } } static void handle_transaction_done(struct smi_info *smi_info) @@ -459,7 +518,7 @@ static void handle_transaction_done(struct smi_info *smi_info) struct timeval t; do_gettimeofday(&t); - printk("**Done: %d.%9.9d\n", t.tv_sec, t.tv_usec); + printk(KERN_DEBUG "**Done: %d.%9.9d\n", t.tv_sec, t.tv_usec); #endif switch (smi_info->si_state) { case SI_NORMAL: @@ -472,9 +531,11 @@ static void handle_transaction_done(struct smi_info *smi_info) smi_info->curr_msg->rsp, IPMI_MAX_MSG_LENGTH); - /* Do this here becase deliver_recv_msg() releases the - lock, and a new message can be put in during the - time the lock is released. */ + /* + * Do this here becase deliver_recv_msg() releases the + * lock, and a new message can be put in during the + * time the lock is released. + */ msg = smi_info->curr_msg; smi_info->curr_msg = NULL; deliver_recv_msg(smi_info, msg); @@ -488,12 +549,13 @@ static void handle_transaction_done(struct smi_info *smi_info) /* We got the flags from the SMI, now handle them. */ len = smi_info->handlers->get_result(smi_info->si_sm, msg, 4); if (msg[2] != 0) { - /* Error fetching flags, just give up for - now. */ + /* Error fetching flags, just give up for now. */ smi_info->si_state = SI_NORMAL; } else if (len < 4) { - /* Hmm, no flags. That's technically illegal, but - don't use uninitialized data. */ + /* + * Hmm, no flags. That's technically illegal, but + * don't use uninitialized data. + */ smi_info->si_state = SI_NORMAL; } else { smi_info->msg_flags = msg[3]; @@ -530,9 +592,11 @@ static void handle_transaction_done(struct smi_info *smi_info) smi_info->curr_msg->rsp, IPMI_MAX_MSG_LENGTH); - /* Do this here becase deliver_recv_msg() releases the - lock, and a new message can be put in during the - time the lock is released. */ + /* + * Do this here becase deliver_recv_msg() releases the + * lock, and a new message can be put in during the + * time the lock is released. + */ msg = smi_info->curr_msg; smi_info->curr_msg = NULL; if (msg->rsp[2] != 0) { @@ -543,14 +607,14 @@ static void handle_transaction_done(struct smi_info *smi_info) smi_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL; handle_flags(smi_info); } else { - spin_lock(&smi_info->count_lock); - smi_info->events++; - spin_unlock(&smi_info->count_lock); - - /* Do this before we deliver the message - because delivering the message releases the - lock and something else can mess with the - state. */ + smi_inc_stat(smi_info, events); + + /* + * Do this before we deliver the message + * because delivering the message releases the + * lock and something else can mess with the + * state. + */ handle_flags(smi_info); deliver_recv_msg(smi_info, msg); @@ -566,9 +630,11 @@ static void handle_transaction_done(struct smi_info *smi_info) smi_info->curr_msg->rsp, IPMI_MAX_MSG_LENGTH); - /* Do this here becase deliver_recv_msg() releases the - lock, and a new message can be put in during the - time the lock is released. */ + /* + * Do this here becase deliver_recv_msg() releases the + * lock, and a new message can be put in during the + * time the lock is released. + */ msg = smi_info->curr_msg; smi_info->curr_msg = NULL; if (msg->rsp[2] != 0) { @@ -579,14 +645,14 @@ static void handle_transaction_done(struct smi_info *smi_info) smi_info->msg_flags &= ~RECEIVE_MSG_AVAIL; handle_flags(smi_info); } else { - spin_lock(&smi_info->count_lock); - smi_info->incoming_messages++; - spin_unlock(&smi_info->count_lock); - - /* Do this before we deliver the message - because delivering the message releases the - lock and something else can mess with the - state. */ + smi_inc_stat(smi_info, incoming_messages); + + /* + * Do this before we deliver the message + * because delivering the message releases the + * lock and something else can mess with the + * state. + */ handle_flags(smi_info); deliver_recv_msg(smi_info, msg); @@ -674,69 +740,70 @@ static void handle_transaction_done(struct smi_info *smi_info) } } -/* Called on timeouts and events. Timeouts should pass the elapsed - time, interrupts should pass in zero. Must be called with - si_lock held and interrupts disabled. */ +/* + * Called on timeouts and events. Timeouts should pass the elapsed + * time, interrupts should pass in zero. Must be called with + * si_lock held and interrupts disabled. + */ static enum si_sm_result smi_event_handler(struct smi_info *smi_info, int time) { enum si_sm_result si_sm_result; restart: - /* There used to be a loop here that waited a little while - (around 25us) before giving up. That turned out to be - pointless, the minimum delays I was seeing were in the 300us - range, which is far too long to wait in an interrupt. So - we just run until the state machine tells us something - happened or it needs a delay. */ + /* + * There used to be a loop here that waited a little while + * (around 25us) before giving up. That turned out to be + * pointless, the minimum delays I was seeing were in the 300us + * range, which is far too long to wait in an interrupt. So + * we just run until the state machine tells us something + * happened or it needs a delay. + */ si_sm_result = smi_info->handlers->event(smi_info->si_sm, time); time = 0; while (si_sm_result == SI_SM_CALL_WITHOUT_DELAY) - { si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); - } - if (si_sm_result == SI_SM_TRANSACTION_COMPLETE) - { - spin_lock(&smi_info->count_lock); - smi_info->complete_transactions++; - spin_unlock(&smi_info->count_lock); + if (si_sm_result == SI_SM_TRANSACTION_COMPLETE) { + smi_inc_stat(smi_info, complete_transactions); handle_transaction_done(smi_info); si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); - } - else if (si_sm_result == SI_SM_HOSED) - { - spin_lock(&smi_info->count_lock); - smi_info->hosed_count++; - spin_unlock(&smi_info->count_lock); + } else if (si_sm_result == SI_SM_HOSED) { + smi_inc_stat(smi_info, hosed_count); - /* Do the before return_hosed_msg, because that - releases the lock. */ + /* + * Do the before return_hosed_msg, because that + * releases the lock. + */ smi_info->si_state = SI_NORMAL; if (smi_info->curr_msg != NULL) { - /* If we were handling a user message, format - a response to send to the upper layer to - tell it about the error. */ + /* + * If we were handling a user message, format + * a response to send to the upper layer to + * tell it about the error. + */ return_hosed_msg(smi_info, IPMI_ERR_UNSPECIFIED); } si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); } - /* We prefer handling attn over new messages. */ - if (si_sm_result == SI_SM_ATTN) - { + /* + * We prefer handling attn over new messages. But don't do + * this if there is not yet an upper layer to handle anything. + */ + if (likely(smi_info->intf) && si_sm_result == SI_SM_ATTN) { unsigned char msg[2]; - spin_lock(&smi_info->count_lock); - smi_info->attentions++; - spin_unlock(&smi_info->count_lock); + smi_inc_stat(smi_info, attentions); - /* Got a attn, send down a get message flags to see - what's causing it. It would be better to handle - this in the upper layer, but due to the way - interrupts work with the SMI, that's not really - possible. */ + /* + * Got a attn, send down a get message flags to see + * what's causing it. It would be better to handle + * this in the upper layer, but due to the way + * interrupts work with the SMI, that's not really + * possible. + */ msg[0] = (IPMI_NETFN_APP_REQUEST << 2); msg[1] = IPMI_GET_MSG_FLAGS_CMD; @@ -748,20 +815,19 @@ static enum si_sm_result smi_event_handler(struct smi_info *smi_info, /* If we are currently idle, try to start the next message. */ if (si_sm_result == SI_SM_IDLE) { - spin_lock(&smi_info->count_lock); - smi_info->idles++; - spin_unlock(&smi_info->count_lock); + smi_inc_stat(smi_info, idles); si_sm_result = start_next_msg(smi_info); if (si_sm_result != SI_SM_IDLE) goto restart; - } + } if ((si_sm_result == SI_SM_IDLE) - && (atomic_read(&smi_info->req_events))) - { - /* We are idle and the upper layer requested that I fetch - events, so do so. */ + && (atomic_read(&smi_info->req_events))) { + /* + * We are idle and the upper layer requested that I fetch + * events, so do so. + */ atomic_set(&smi_info->req_events, 0); smi_info->curr_msg = ipmi_alloc_smi_msg(); @@ -803,56 +869,50 @@ static void sender(void *send_info, return; } - spin_lock_irqsave(&(smi_info->msg_lock), flags); #ifdef DEBUG_TIMING do_gettimeofday(&t); printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec); #endif if (smi_info->run_to_completion) { - /* If we are running to completion, then throw it in - the list and run transactions until everything is - clear. Priority doesn't matter here. */ + /* + * If we are running to completion, then throw it in + * the list and run transactions until everything is + * clear. Priority doesn't matter here. + */ + + /* + * Run to completion means we are single-threaded, no + * need for locks. + */ list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); - /* We have to release the msg lock and claim the smi - lock in this case, because of race conditions. */ - spin_unlock_irqrestore(&(smi_info->msg_lock), flags); - - spin_lock_irqsave(&(smi_info->si_lock), flags); result = smi_event_handler(smi_info, 0); while (result != SI_SM_IDLE) { udelay(SI_SHORT_TIMEOUT_USEC); result = smi_event_handler(smi_info, SI_SHORT_TIMEOUT_USEC); } - spin_unlock_irqrestore(&(smi_info->si_lock), flags); return; - } else { - if (priority > 0) { - list_add_tail(&(msg->link), &(smi_info->hp_xmit_msgs)); - } else { - list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); - } } - spin_unlock_irqrestore(&(smi_info->msg_lock), flags); - spin_lock_irqsave(&(smi_info->si_lock), flags); - if ((smi_info->si_state == SI_NORMAL) - && (smi_info->curr_msg == NULL)) - { + spin_lock_irqsave(&smi_info->msg_lock, flags); + if (priority > 0) + list_add_tail(&msg->link, &smi_info->hp_xmit_msgs); + else + list_add_tail(&msg->link, &smi_info->xmit_msgs); + spin_unlock_irqrestore(&smi_info->msg_lock, flags); + + spin_lock_irqsave(&smi_info->si_lock, flags); + if (smi_info->si_state == SI_NORMAL && smi_info->curr_msg == NULL) start_next_msg(smi_info); - } - spin_unlock_irqrestore(&(smi_info->si_lock), flags); + spin_unlock_irqrestore(&smi_info->si_lock, flags); } static void set_run_to_completion(void *send_info, int i_run_to_completion) { struct smi_info *smi_info = send_info; enum si_sm_result result; - unsigned long flags; - - spin_lock_irqsave(&(smi_info->si_lock), flags); smi_info->run_to_completion = i_run_to_completion; if (i_run_to_completion) { @@ -863,8 +923,6 @@ static void set_run_to_completion(void *send_info, int i_run_to_completion) SI_SHORT_TIMEOUT_USEC); } } - - spin_unlock_irqrestore(&(smi_info->si_lock), flags); } static int ipmi_thread(void *data) @@ -878,9 +936,8 @@ static int ipmi_thread(void *data) spin_lock_irqsave(&(smi_info->si_lock), flags); smi_result = smi_event_handler(smi_info, 0); spin_unlock_irqrestore(&(smi_info->si_lock), flags); - if (smi_result == SI_SM_CALL_WITHOUT_DELAY) { - /* do nothing */ - } + if (smi_result == SI_SM_CALL_WITHOUT_DELAY) + ; /* do nothing */ else if (smi_result == SI_SM_CALL_WITH_DELAY) schedule(); else @@ -931,7 +988,7 @@ static void smi_timeout(unsigned long data) spin_lock_irqsave(&(smi_info->si_lock), flags); #ifdef DEBUG_TIMING do_gettimeofday(&t); - printk("**Timer: %d.%9.9d\n", t.tv_sec, t.tv_usec); + printk(KERN_DEBUG "**Timer: %d.%9.9d\n", t.tv_sec, t.tv_usec); #endif jiffies_now = jiffies; time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies) @@ -945,23 +1002,19 @@ static void smi_timeout(unsigned long data) if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { /* Running with interrupts, only do long timeouts. */ smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; - spin_lock_irqsave(&smi_info->count_lock, flags); - smi_info->long_timeouts++; - spin_unlock_irqrestore(&smi_info->count_lock, flags); + smi_inc_stat(smi_info, long_timeouts); goto do_add_timer; } - /* If the state machine asks for a short delay, then shorten - the timer timeout. */ + /* + * If the state machine asks for a short delay, then shorten + * the timer timeout. + */ if (smi_result == SI_SM_CALL_WITH_DELAY) { - spin_lock_irqsave(&smi_info->count_lock, flags); - smi_info->short_timeouts++; - spin_unlock_irqrestore(&smi_info->count_lock, flags); + smi_inc_stat(smi_info, short_timeouts); smi_info->si_timer.expires = jiffies + 1; } else { - spin_lock_irqsave(&smi_info->count_lock, flags); - smi_info->long_timeouts++; - spin_unlock_irqrestore(&smi_info->count_lock, flags); + smi_inc_stat(smi_info, long_timeouts); smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; } @@ -979,13 +1032,11 @@ static irqreturn_t si_irq_handler(int irq, void *data) spin_lock_irqsave(&(smi_info->si_lock), flags); - spin_lock(&smi_info->count_lock); - smi_info->interrupts++; - spin_unlock(&smi_info->count_lock); + smi_inc_stat(smi_info, interrupts); #ifdef DEBUG_TIMING do_gettimeofday(&t); - printk("**Interrupt: %d.%9.9d\n", t.tv_sec, t.tv_usec); + printk(KERN_DEBUG "**Interrupt: %d.%9.9d\n", t.tv_sec, t.tv_usec); #endif smi_event_handler(smi_info, 0); spin_unlock_irqrestore(&(smi_info->si_lock), flags); @@ -1028,7 +1079,7 @@ static int smi_start_processing(void *send_info, * The BT interface is efficient enough to not need a thread, * and there is no need for a thread if we have interrupts. */ - else if ((new_smi->si_type != SI_BT) && (!new_smi->irq)) + else if ((new_smi->si_type != SI_BT) && (!new_smi->irq)) enable = 1; if (enable) { @@ -1054,8 +1105,7 @@ static void set_maintenance_mode(void *send_info, int enable) atomic_set(&smi_info->req_events, 0); } -static struct ipmi_smi_handlers handlers = -{ +static struct ipmi_smi_handlers handlers = { .owner = THIS_MODULE, .start_processing = smi_start_processing, .sender = sender, @@ -1065,8 +1115,10 @@ static struct ipmi_smi_handlers handlers = .poll = poll, }; -/* There can be 4 IO ports passed in (with or without IRQs), 4 addresses, - a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS */ +/* + * There can be 4 IO ports passed in (with or without IRQs), 4 addresses, + * a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS. + */ static LIST_HEAD(smi_infos); static DEFINE_MUTEX(smi_infos_lock); @@ -1257,10 +1309,9 @@ static void port_cleanup(struct smi_info *info) int idx; if (addr) { - for (idx = 0; idx < info->io_size; idx++) { + for (idx = 0; idx < info->io_size; idx++) release_region(addr + idx * info->io.regspacing, info->io.regsize); - } } } @@ -1274,8 +1325,10 @@ static int port_setup(struct smi_info *info) info->io_cleanup = port_cleanup; - /* Figure out the actual inb/inw/inl/etc routine to use based - upon the register size. */ + /* + * Figure out the actual inb/inw/inl/etc routine to use based + * upon the register size. + */ switch (info->io.regsize) { case 1: info->io.inputb = port_inb; @@ -1290,17 +1343,18 @@ static int port_setup(struct smi_info *info) info->io.outputb = port_outl; break; default: - printk("ipmi_si: Invalid register size: %d\n", + printk(KERN_WARNING "ipmi_si: Invalid register size: %d\n", info->io.regsize); return -EINVAL; } - /* Some BIOSes reserve disjoint I/O regions in their ACPI + /* + * Some BIOSes reserve disjoint I/O regions in their ACPI * tables. This causes problems when trying to register the * entire I/O region. Therefore we must register each I/O * port separately. */ - for (idx = 0; idx < info->io_size; idx++) { + for (idx = 0; idx < info->io_size; idx++) { if (request_region(addr + idx * info->io.regspacing, info->io.regsize, DEVICE_NAME) == NULL) { /* Undo allocations */ @@ -1388,8 +1442,10 @@ static int mem_setup(struct smi_info *info) info->io_cleanup = mem_cleanup; - /* Figure out the actual readb/readw/readl/etc routine to use based - upon the register size. */ + /* + * Figure out the actual readb/readw/readl/etc routine to use based + * upon the register size. + */ switch (info->io.regsize) { case 1: info->io.inputb = intf_mem_inb; @@ -1410,16 +1466,18 @@ static int mem_setup(struct smi_info *info) break; #endif default: - printk("ipmi_si: Invalid register size: %d\n", + printk(KERN_WARNING "ipmi_si: Invalid register size: %d\n", info->io.regsize); return -EINVAL; } - /* Calculate the total amount of memory to claim. This is an + /* + * Calculate the total amount of memory to claim. This is an * unusual looking calculation, but it avoids claiming any * more memory than it has to. It will claim everything * between the first address to the end of the last full - * register. */ + * register. + */ mapsize = ((info->io_size * info->io.regspacing) - (info->io.regspacing - info->io.regsize)); @@ -1749,9 +1807,11 @@ static __devinit void hardcode_find_bmc(void) #include <linux/acpi.h> -/* Once we get an ACPI failure, we don't try any more, because we go - through the tables sequentially. Once we don't find a table, there - are no more. */ +/* + * Once we get an ACPI failure, we don't try any more, because we go + * through the tables sequentially. Once we don't find a table, there + * are no more. + */ static int acpi_failure; /* For GPE-type interrupts. */ @@ -1765,9 +1825,7 @@ static u32 ipmi_acpi_gpe(void *context) spin_lock_irqsave(&(smi_info->si_lock), flags); - spin_lock(&smi_info->count_lock); - smi_info->interrupts++; - spin_unlock(&smi_info->count_lock); + smi_inc_stat(smi_info, interrupts); #ifdef DEBUG_TIMING do_gettimeofday(&t); @@ -1816,7 +1874,8 @@ static int acpi_gpe_irq_setup(struct smi_info *info) /* * Defined at - * http://h21007.www2.hp.com/dspp/files/unprotected/devresource/Docs/TechPapers/IA64/hpspmi.pdf + * http://h21007.www2.hp.com/dspp/files/unprotected/devresource/ + * Docs/TechPapers/IA64/hpspmi.pdf */ struct SPMITable { s8 Signature[4]; @@ -1838,14 +1897,18 @@ struct SPMITable { */ u8 InterruptType; - /* If bit 0 of InterruptType is set, then this is the SCI - interrupt in the GPEx_STS register. */ + /* + * If bit 0 of InterruptType is set, then this is the SCI + * interrupt in the GPEx_STS register. + */ u8 GPE; s16 Reserved; - /* If bit 1 of InterruptType is set, then this is the I/O - APIC/SAPIC interrupt. */ + /* + * If bit 1 of InterruptType is set, then this is the I/O + * APIC/SAPIC interrupt. + */ u32 GlobalSystemInterrupt; /* The actual register address. */ @@ -1863,7 +1926,7 @@ static __devinit int try_init_acpi(struct SPMITable *spmi) if (spmi->IPMIlegacy != 1) { printk(KERN_INFO "IPMI: Bad SPMI legacy %d\n", spmi->IPMIlegacy); - return -ENODEV; + return -ENODEV; } if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) @@ -1880,8 +1943,7 @@ static __devinit int try_init_acpi(struct SPMITable *spmi) info->addr_source = "ACPI"; /* Figure out the interface type. */ - switch (spmi->InterfaceType) - { + switch (spmi->InterfaceType) { case 1: /* KCS */ info->si_type = SI_KCS; break; @@ -1929,7 +1991,8 @@ static __devinit int try_init_acpi(struct SPMITable *spmi) info->io.addr_type = IPMI_IO_ADDR_SPACE; } else { kfree(info); - printk("ipmi_si: Unknown ACPI I/O Address type\n"); + printk(KERN_WARNING + "ipmi_si: Unknown ACPI I/O Address type\n"); return -EIO; } info->io.addr_data = spmi->addr.address; @@ -1963,8 +2026,7 @@ static __devinit void acpi_find_bmc(void) #endif #ifdef CONFIG_DMI -struct dmi_ipmi_data -{ +struct dmi_ipmi_data { u8 type; u8 addr_space; unsigned long base_addr; @@ -1989,11 +2051,10 @@ static int __devinit decode_dmi(const struct dmi_header *dm, /* I/O */ base_addr &= 0xFFFE; dmi->addr_space = IPMI_IO_ADDR_SPACE; - } - else { + } else /* Memory */ dmi->addr_space = IPMI_MEM_ADDR_SPACE; - } + /* If bit 4 of byte 0x10 is set, then the lsb for the address is odd. */ dmi->base_addr = base_addr | ((data[0x10] & 0x10) >> 4); @@ -2002,7 +2063,7 @@ static int __devinit decode_dmi(const struct dmi_header *dm, /* The top two bits of byte 0x10 hold the register spacing. */ reg_spacing = (data[0x10] & 0xC0) >> 6; - switch(reg_spacing){ + switch (reg_spacing) { case 0x00: /* Byte boundaries */ dmi->offset = 1; break; @@ -2018,12 +2079,14 @@ static int __devinit decode_dmi(const struct dmi_header *dm, } } else { /* Old DMI spec. */ - /* Note that technically, the lower bit of the base + /* + * Note that technically, the lower bit of the base * address should be 1 if the address is I/O and 0 if * the address is in memory. So many systems get that * wrong (and all that I have seen are I/O) so we just * ignore that bit and assume I/O. Systems that use - * memory should use the newer spec, anyway. */ + * memory should use the newer spec, anyway. + */ dmi->base_addr = base_addr & 0xfffe; dmi->addr_space = IPMI_IO_ADDR_SPACE; dmi->offset = 1; @@ -2230,13 +2293,13 @@ static struct pci_device_id ipmi_pci_devices[] = { MODULE_DEVICE_TABLE(pci, ipmi_pci_devices); static struct pci_driver ipmi_pci_driver = { - .name = DEVICE_NAME, - .id_table = ipmi_pci_devices, - .probe = ipmi_pci_probe, - .remove = __devexit_p(ipmi_pci_remove), + .name = DEVICE_NAME, + .id_table = ipmi_pci_devices, + .probe = ipmi_pci_probe, + .remove = __devexit_p(ipmi_pci_remove), #ifdef CONFIG_PM - .suspend = ipmi_pci_suspend, - .resume = ipmi_pci_resume, + .suspend = ipmi_pci_suspend, + .resume = ipmi_pci_resume, #endif }; #endif /* CONFIG_PCI */ @@ -2306,7 +2369,7 @@ static int __devinit ipmi_of_probe(struct of_device *dev, info->io.addr_data, info->io.regsize, info->io.regspacing, info->irq); - dev->dev.driver_data = (void*) info; + dev->dev.driver_data = (void *) info; return try_smi_init(info); } @@ -2319,14 +2382,16 @@ static int __devexit ipmi_of_remove(struct of_device *dev) static struct of_device_id ipmi_match[] = { - { .type = "ipmi", .compatible = "ipmi-kcs", .data = (void *)(unsigned long) SI_KCS }, - { .type = "ipmi", .compatible = "ipmi-smic", .data = (void *)(unsigned long) SI_SMIC }, - { .type = "ipmi", .compatible = "ipmi-bt", .data = (void *)(unsigned long) SI_BT }, + { .type = "ipmi", .compatible = "ipmi-kcs", + .data = (void *)(unsigned long) SI_KCS }, + { .type = "ipmi", .compatible = "ipmi-smic", + .data = (void *)(unsigned long) SI_SMIC }, + { .type = "ipmi", .compatible = "ipmi-bt", + .data = (void *)(unsigned long) SI_BT }, {}, }; -static struct of_platform_driver ipmi_of_platform_driver = -{ +static struct of_platform_driver ipmi_of_platform_driver = { .name = "ipmi", .match_table = ipmi_match, .probe = ipmi_of_probe, @@ -2347,32 +2412,32 @@ static int try_get_dev_id(struct smi_info *smi_info) if (!resp) return -ENOMEM; - /* Do a Get Device ID command, since it comes back with some - useful info. */ + /* + * Do a Get Device ID command, since it comes back with some + * useful info. + */ msg[0] = IPMI_NETFN_APP_REQUEST << 2; msg[1] = IPMI_GET_DEVICE_ID_CMD; smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); smi_result = smi_info->handlers->event(smi_info->si_sm, 0); - for (;;) - { + for (;;) { if (smi_result == SI_SM_CALL_WITH_DELAY || smi_result == SI_SM_CALL_WITH_TICK_DELAY) { schedule_timeout_uninterruptible(1); smi_result = smi_info->handlers->event( smi_info->si_sm, 100); - } - else if (smi_result == SI_SM_CALL_WITHOUT_DELAY) - { + } else if (smi_result == SI_SM_CALL_WITHOUT_DELAY) { smi_result = smi_info->handlers->event( smi_info->si_sm, 0); - } - else + } else break; } if (smi_result == SI_SM_HOSED) { - /* We couldn't get the state machine to run, so whatever's at - the port is probably not an IPMI SMI interface. */ + /* + * We couldn't get the state machine to run, so whatever's at + * the port is probably not an IPMI SMI interface. + */ rv = -ENODEV; goto out; } @@ -2405,30 +2470,28 @@ static int stat_file_read_proc(char *page, char **start, off_t off, out += sprintf(out, "interrupts_enabled: %d\n", smi->irq && !smi->interrupt_disabled); - out += sprintf(out, "short_timeouts: %ld\n", - smi->short_timeouts); - out += sprintf(out, "long_timeouts: %ld\n", - smi->long_timeouts); - out += sprintf(out, "timeout_restarts: %ld\n", - smi->timeout_restarts); - out += sprintf(out, "idles: %ld\n", - smi->idles); - out += sprintf(out, "interrupts: %ld\n", - smi->interrupts); - out += sprintf(out, "attentions: %ld\n", - smi->attentions); - out += sprintf(out, "flag_fetches: %ld\n", - smi->flag_fetches); - out += sprintf(out, "hosed_count: %ld\n", - smi->hosed_count); - out += sprintf(out, "complete_transactions: %ld\n", - smi->complete_transactions); - out += sprintf(out, "events: %ld\n", - smi->events); - out += sprintf(out, "watchdog_pretimeouts: %ld\n", - smi->watchdog_pretimeouts); - out += sprintf(out, "incoming_messages: %ld\n", - smi->incoming_messages); + out += sprintf(out, "short_timeouts: %u\n", + smi_get_stat(smi, short_timeouts)); + out += sprintf(out, "long_timeouts: %u\n", + smi_get_stat(smi, long_timeouts)); + out += sprintf(out, "idles: %u\n", + smi_get_stat(smi, idles)); + out += sprintf(out, "interrupts: %u\n", + smi_get_stat(smi, interrupts)); + out += sprintf(out, "attentions: %u\n", + smi_get_stat(smi, attentions)); + out += sprintf(out, "flag_fetches: %u\n", + smi_get_stat(smi, flag_fetches)); + out += sprintf(out, "hosed_count: %u\n", + smi_get_stat(smi, hosed_count)); + out += sprintf(out, "complete_transactions: %u\n", + smi_get_stat(smi, complete_transactions)); + out += sprintf(out, "events: %u\n", + smi_get_stat(smi, events)); + out += sprintf(out, "watchdog_pretimeouts: %u\n", + smi_get_stat(smi, watchdog_pretimeouts)); + out += sprintf(out, "incoming_messages: %u\n", + smi_get_stat(smi, incoming_messages)); return out - page; } @@ -2460,7 +2523,7 @@ static int param_read_proc(char *page, char **start, off_t off, static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info) { smi_info->msg_flags = ((smi_info->msg_flags & ~OEM_DATA_AVAIL) | - RECEIVE_MSG_AVAIL); + RECEIVE_MSG_AVAIL); return 1; } @@ -2502,10 +2565,9 @@ static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info) id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { smi_info->oem_data_avail_handler = oem_data_avail_to_receive_msg_avail; - } - else if (ipmi_version_major(id) < 1 || - (ipmi_version_major(id) == 1 && - ipmi_version_minor(id) < 5)) { + } else if (ipmi_version_major(id) < 1 || + (ipmi_version_major(id) == 1 && + ipmi_version_minor(id) < 5)) { smi_info->oem_data_avail_handler = oem_data_avail_to_receive_msg_avail; } @@ -2597,8 +2659,10 @@ static void setup_xaction_handlers(struct smi_info *smi_info) static inline void wait_for_timer_and_thread(struct smi_info *smi_info) { if (smi_info->intf) { - /* The timer and thread are only running if the - interface has been started up and registered. */ + /* + * The timer and thread are only running if the + * interface has been started up and registered. + */ if (smi_info->thread != NULL) kthread_stop(smi_info->thread); del_timer_sync(&smi_info->si_timer); @@ -2676,6 +2740,7 @@ static int is_new_interface(struct smi_info *info) static int try_smi_init(struct smi_info *new_smi) { int rv; + int i; if (new_smi->addr_source) { printk(KERN_INFO "ipmi_si: Trying %s-specified %s state" @@ -2722,7 +2787,7 @@ static int try_smi_init(struct smi_info *new_smi) /* Allocate the state machine's data and initialize it. */ new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL); if (!new_smi->si_sm) { - printk(" Could not allocate state machine memory\n"); + printk(KERN_ERR "Could not allocate state machine memory\n"); rv = -ENOMEM; goto out_err; } @@ -2732,13 +2797,12 @@ static int try_smi_init(struct smi_info *new_smi) /* Now that we know the I/O size, we can set up the I/O. */ rv = new_smi->io_setup(new_smi); if (rv) { - printk(" Could not set up I/O space\n"); + printk(KERN_ERR "Could not set up I/O space\n"); goto out_err; } spin_lock_init(&(new_smi->si_lock)); spin_lock_init(&(new_smi->msg_lock)); - spin_lock_init(&(new_smi->count_lock)); /* Do low-level detection first. */ if (new_smi->handlers->detect(new_smi->si_sm)) { @@ -2749,8 +2813,10 @@ static int try_smi_init(struct smi_info *new_smi) goto out_err; } - /* Attempt a get device id command. If it fails, we probably - don't have a BMC here. */ + /* + * Attempt a get device id command. If it fails, we probably + * don't have a BMC here. + */ rv = try_get_dev_id(new_smi); if (rv) { if (new_smi->addr_source) @@ -2767,22 +2833,28 @@ static int try_smi_init(struct smi_info *new_smi) new_smi->curr_msg = NULL; atomic_set(&new_smi->req_events, 0); new_smi->run_to_completion = 0; + for (i = 0; i < SI_NUM_STATS; i++) + atomic_set(&new_smi->stats[i], 0); new_smi->interrupt_disabled = 0; atomic_set(&new_smi->stop_operation, 0); new_smi->intf_num = smi_num; smi_num++; - /* Start clearing the flags before we enable interrupts or the - timer to avoid racing with the timer. */ + /* + * Start clearing the flags before we enable interrupts or the + * timer to avoid racing with the timer. + */ start_clear_flags(new_smi); /* IRQ is defined to be set when non-zero. */ if (new_smi->irq) new_smi->si_state = SI_CLEARING_FLAGS_THEN_SET_IRQ; if (!new_smi->dev) { - /* If we don't already have a device from something - * else (like PCI), then register a new one. */ + /* + * If we don't already have a device from something + * else (like PCI), then register a new one. + */ new_smi->pdev = platform_device_alloc("ipmi_si", new_smi->intf_num); if (rv) { @@ -2820,7 +2892,7 @@ static int try_smi_init(struct smi_info *new_smi) } rv = ipmi_smi_add_proc_entry(new_smi->intf, "type", - type_file_read_proc, NULL, + type_file_read_proc, new_smi, THIS_MODULE); if (rv) { printk(KERN_ERR @@ -2830,7 +2902,7 @@ static int try_smi_init(struct smi_info *new_smi) } rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats", - stat_file_read_proc, NULL, + stat_file_read_proc, new_smi, THIS_MODULE); if (rv) { printk(KERN_ERR @@ -2840,7 +2912,7 @@ static int try_smi_init(struct smi_info *new_smi) } rv = ipmi_smi_add_proc_entry(new_smi->intf, "params", - param_read_proc, NULL, + param_read_proc, new_smi, THIS_MODULE); if (rv) { printk(KERN_ERR @@ -2853,7 +2925,8 @@ static int try_smi_init(struct smi_info *new_smi) mutex_unlock(&smi_infos_lock); - printk(KERN_INFO "IPMI %s interface initialized\n",si_to_str[new_smi->si_type]); + printk(KERN_INFO "IPMI %s interface initialized\n", + si_to_str[new_smi->si_type]); return 0; @@ -2868,9 +2941,11 @@ static int try_smi_init(struct smi_info *new_smi) if (new_smi->irq_cleanup) new_smi->irq_cleanup(new_smi); - /* Wait until we know that we are out of any interrupt - handlers might have been running before we freed the - interrupt. */ + /* + * Wait until we know that we are out of any interrupt + * handlers might have been running before we freed the + * interrupt. + */ synchronize_sched(); if (new_smi->si_sm) { @@ -2942,11 +3017,10 @@ static __devinit int init_ipmi_si(void) #ifdef CONFIG_PCI rv = pci_register_driver(&ipmi_pci_driver); - if (rv){ + if (rv) printk(KERN_ERR "init_ipmi_si: Unable to register PCI driver: %d\n", rv); - } #endif #ifdef CONFIG_PPC_OF @@ -2975,7 +3049,8 @@ static __devinit int init_ipmi_si(void) of_unregister_platform_driver(&ipmi_of_platform_driver); #endif driver_unregister(&ipmi_driver); - printk("ipmi_si: Unable to find any System Interface(s)\n"); + printk(KERN_WARNING + "ipmi_si: Unable to find any System Interface(s)\n"); return -ENODEV; } else { mutex_unlock(&smi_infos_lock); @@ -2997,13 +3072,17 @@ static void cleanup_one_si(struct smi_info *to_clean) /* Tell the driver that we are shutting down. */ atomic_inc(&to_clean->stop_operation); - /* Make sure the timer and thread are stopped and will not run - again. */ + /* + * Make sure the timer and thread are stopped and will not run + * again. + */ wait_for_timer_and_thread(to_clean); - /* Timeouts are stopped, now make sure the interrupts are off - for the device. A little tricky with locks to make sure - there are no races. */ + /* + * Timeouts are stopped, now make sure the interrupts are off + * for the device. A little tricky with locks to make sure + * there are no races. + */ spin_lock_irqsave(&to_clean->si_lock, flags); while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { spin_unlock_irqrestore(&to_clean->si_lock, flags); @@ -3074,4 +3153,5 @@ module_exit(cleanup_ipmi_si); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); -MODULE_DESCRIPTION("Interface to the IPMI driver for the KCS, SMIC, and BT system interfaces."); +MODULE_DESCRIPTION("Interface to the IPMI driver for the KCS, SMIC, and BT" + " system interfaces."); diff --git a/drivers/char/ipmi/ipmi_si_sm.h b/drivers/char/ipmi/ipmi_si_sm.h index 4b731b24dc1..df89f73475f 100644 --- a/drivers/char/ipmi/ipmi_si_sm.h +++ b/drivers/char/ipmi/ipmi_si_sm.h @@ -34,22 +34,27 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ -/* This is defined by the state machines themselves, it is an opaque - data type for them to use. */ +/* + * This is defined by the state machines themselves, it is an opaque + * data type for them to use. + */ struct si_sm_data; -/* The structure for doing I/O in the state machine. The state - machine doesn't have the actual I/O routines, they are done through - this interface. */ -struct si_sm_io -{ +/* + * The structure for doing I/O in the state machine. The state + * machine doesn't have the actual I/O routines, they are done through + * this interface. + */ +struct si_sm_io { unsigned char (*inputb)(struct si_sm_io *io, unsigned int offset); void (*outputb)(struct si_sm_io *io, unsigned int offset, unsigned char b); - /* Generic info used by the actual handling routines, the - state machine shouldn't touch these. */ + /* + * Generic info used by the actual handling routines, the + * state machine shouldn't touch these. + */ void __iomem *addr; int regspacing; int regsize; @@ -59,53 +64,67 @@ struct si_sm_io }; /* Results of SMI events. */ -enum si_sm_result -{ +enum si_sm_result { SI_SM_CALL_WITHOUT_DELAY, /* Call the driver again immediately */ SI_SM_CALL_WITH_DELAY, /* Delay some before calling again. */ - SI_SM_CALL_WITH_TICK_DELAY, /* Delay at least 1 tick before calling again. */ + SI_SM_CALL_WITH_TICK_DELAY,/* Delay >=1 tick before calling again. */ SI_SM_TRANSACTION_COMPLETE, /* A transaction is finished. */ SI_SM_IDLE, /* The SM is in idle state. */ SI_SM_HOSED, /* The hardware violated the state machine. */ - SI_SM_ATTN /* The hardware is asserting attn and the - state machine is idle. */ + + /* + * The hardware is asserting attn and the state machine is + * idle. + */ + SI_SM_ATTN }; /* Handlers for the SMI state machine. */ -struct si_sm_handlers -{ - /* Put the version number of the state machine here so the - upper layer can print it. */ +struct si_sm_handlers { + /* + * Put the version number of the state machine here so the + * upper layer can print it. + */ char *version; - /* Initialize the data and return the amount of I/O space to - reserve for the space. */ + /* + * Initialize the data and return the amount of I/O space to + * reserve for the space. + */ unsigned int (*init_data)(struct si_sm_data *smi, struct si_sm_io *io); - /* Start a new transaction in the state machine. This will - return -2 if the state machine is not idle, -1 if the size - is invalid (to large or too small), or 0 if the transaction - is successfully completed. */ + /* + * Start a new transaction in the state machine. This will + * return -2 if the state machine is not idle, -1 if the size + * is invalid (to large or too small), or 0 if the transaction + * is successfully completed. + */ int (*start_transaction)(struct si_sm_data *smi, unsigned char *data, unsigned int size); - /* Return the results after the transaction. This will return - -1 if the buffer is too small, zero if no transaction is - present, or the actual length of the result data. */ + /* + * Return the results after the transaction. This will return + * -1 if the buffer is too small, zero if no transaction is + * present, or the actual length of the result data. + */ int (*get_result)(struct si_sm_data *smi, unsigned char *data, unsigned int length); - /* Call this periodically (for a polled interface) or upon - receiving an interrupt (for a interrupt-driven interface). - If interrupt driven, you should probably poll this - periodically when not in idle state. This should be called - with the time that passed since the last call, if it is - significant. Time is in microseconds. */ + /* + * Call this periodically (for a polled interface) or upon + * receiving an interrupt (for a interrupt-driven interface). + * If interrupt driven, you should probably poll this + * periodically when not in idle state. This should be called + * with the time that passed since the last call, if it is + * significant. Time is in microseconds. + */ enum si_sm_result (*event)(struct si_sm_data *smi, long time); - /* Attempt to detect an SMI. Returns 0 on success or nonzero - on failure. */ + /* + * Attempt to detect an SMI. Returns 0 on success or nonzero + * on failure. + */ int (*detect)(struct si_sm_data *smi); /* The interface is shutting down, so clean it up. */ diff --git a/drivers/char/ipmi/ipmi_smic_sm.c b/drivers/char/ipmi/ipmi_smic_sm.c index e64ea7d25d2..faed9297190 100644 --- a/drivers/char/ipmi/ipmi_smic_sm.c +++ b/drivers/char/ipmi/ipmi_smic_sm.c @@ -85,6 +85,7 @@ enum smic_states { /* SMIC Flags Register Bits */ #define SMIC_RX_DATA_READY 0x80 #define SMIC_TX_DATA_READY 0x40 + /* * SMIC_SMI and SMIC_EVM_DATA_AVAIL are only used by * a few systems, and then only by Systems Management @@ -104,23 +105,22 @@ enum smic_states { #define EC_ILLEGAL_COMMAND 0x04 #define EC_BUFFER_FULL 0x05 -struct si_sm_data -{ +struct si_sm_data { enum smic_states state; struct si_sm_io *io; - unsigned char write_data[MAX_SMIC_WRITE_SIZE]; - int write_pos; - int write_count; - int orig_write_count; - unsigned char read_data[MAX_SMIC_READ_SIZE]; - int read_pos; - int truncated; - unsigned int error_retries; - long smic_timeout; + unsigned char write_data[MAX_SMIC_WRITE_SIZE]; + int write_pos; + int write_count; + int orig_write_count; + unsigned char read_data[MAX_SMIC_READ_SIZE]; + int read_pos; + int truncated; + unsigned int error_retries; + long smic_timeout; }; -static unsigned int init_smic_data (struct si_sm_data *smic, - struct si_sm_io *io) +static unsigned int init_smic_data(struct si_sm_data *smic, + struct si_sm_io *io) { smic->state = SMIC_IDLE; smic->io = io; @@ -150,11 +150,10 @@ static int start_smic_transaction(struct si_sm_data *smic, return IPMI_NOT_IN_MY_STATE_ERR; if (smic_debug & SMIC_DEBUG_MSG) { - printk(KERN_INFO "start_smic_transaction -"); - for (i = 0; i < size; i ++) { - printk (" %02x", (unsigned char) (data [i])); - } - printk ("\n"); + printk(KERN_DEBUG "start_smic_transaction -"); + for (i = 0; i < size; i++) + printk(" %02x", (unsigned char) data[i]); + printk("\n"); } smic->error_retries = 0; memcpy(smic->write_data, data, size); @@ -173,11 +172,10 @@ static int smic_get_result(struct si_sm_data *smic, int i; if (smic_debug & SMIC_DEBUG_MSG) { - printk (KERN_INFO "smic_get result -"); - for (i = 0; i < smic->read_pos; i ++) { - printk (" %02x", (smic->read_data [i])); - } - printk ("\n"); + printk(KERN_DEBUG "smic_get result -"); + for (i = 0; i < smic->read_pos; i++) + printk(" %02x", smic->read_data[i]); + printk("\n"); } if (length < smic->read_pos) { smic->read_pos = length; @@ -223,8 +221,8 @@ static inline void write_smic_control(struct si_sm_data *smic, smic->io->outputb(smic->io, 1, control); } -static inline void write_si_sm_data (struct si_sm_data *smic, - unsigned char data) +static inline void write_si_sm_data(struct si_sm_data *smic, + unsigned char data) { smic->io->outputb(smic->io, 0, data); } @@ -233,10 +231,9 @@ static inline void start_error_recovery(struct si_sm_data *smic, char *reason) { (smic->error_retries)++; if (smic->error_retries > SMIC_MAX_ERROR_RETRIES) { - if (smic_debug & SMIC_DEBUG_ENABLE) { + if (smic_debug & SMIC_DEBUG_ENABLE) printk(KERN_WARNING "ipmi_smic_drv: smic hosed: %s\n", reason); - } smic->state = SMIC_HOSED; } else { smic->write_count = smic->orig_write_count; @@ -254,14 +251,14 @@ static inline void write_next_byte(struct si_sm_data *smic) (smic->write_count)--; } -static inline void read_next_byte (struct si_sm_data *smic) +static inline void read_next_byte(struct si_sm_data *smic) { if (smic->read_pos >= MAX_SMIC_READ_SIZE) { - read_smic_data (smic); + read_smic_data(smic); smic->truncated = 1; } else { smic->read_data[smic->read_pos] = read_smic_data(smic); - (smic->read_pos)++; + smic->read_pos++; } } @@ -336,7 +333,7 @@ static inline void read_next_byte (struct si_sm_data *smic) SMIC_SC_SMS_RD_END 0xC6 */ -static enum si_sm_result smic_event (struct si_sm_data *smic, long time) +static enum si_sm_result smic_event(struct si_sm_data *smic, long time) { unsigned char status; unsigned char flags; @@ -347,13 +344,15 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) return SI_SM_HOSED; } if (smic->state != SMIC_IDLE) { - if (smic_debug & SMIC_DEBUG_STATES) { - printk(KERN_INFO + if (smic_debug & SMIC_DEBUG_STATES) + printk(KERN_DEBUG "smic_event - smic->smic_timeout = %ld," " time = %ld\n", smic->smic_timeout, time); - } -/* FIXME: smic_event is sometimes called with time > SMIC_RETRY_TIMEOUT */ + /* + * FIXME: smic_event is sometimes called with time > + * SMIC_RETRY_TIMEOUT + */ if (time < SMIC_RETRY_TIMEOUT) { smic->smic_timeout -= time; if (smic->smic_timeout < 0) { @@ -366,9 +365,9 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) if (flags & SMIC_FLAG_BSY) return SI_SM_CALL_WITH_DELAY; - status = read_smic_status (smic); + status = read_smic_status(smic); if (smic_debug & SMIC_DEBUG_STATES) - printk(KERN_INFO + printk(KERN_DEBUG "smic_event - state = %d, flags = 0x%02x," " status = 0x%02x\n", smic->state, flags, status); @@ -377,9 +376,7 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) case SMIC_IDLE: /* in IDLE we check for available messages */ if (flags & SMIC_SMS_DATA_AVAIL) - { return SI_SM_ATTN; - } return SI_SM_IDLE; case SMIC_START_OP: @@ -391,7 +388,7 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) case SMIC_OP_OK: if (status != SMIC_SC_SMS_READY) { - /* this should not happen */ + /* this should not happen */ start_error_recovery(smic, "state = SMIC_OP_OK," " status != SMIC_SC_SMS_READY"); @@ -411,8 +408,10 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) "status != SMIC_SC_SMS_WR_START"); return SI_SM_CALL_WITH_DELAY; } - /* we must not issue WR_(NEXT|END) unless - TX_DATA_READY is set */ + /* + * we must not issue WR_(NEXT|END) unless + * TX_DATA_READY is set + * */ if (flags & SMIC_TX_DATA_READY) { if (smic->write_count == 1) { /* last byte */ @@ -424,10 +423,8 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) } write_next_byte(smic); write_smic_flags(smic, flags | SMIC_FLAG_BSY); - } - else { + } else return SI_SM_CALL_WITH_DELAY; - } break; case SMIC_WRITE_NEXT: @@ -442,52 +439,48 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) if (smic->write_count == 1) { write_smic_control(smic, SMIC_CC_SMS_WR_END); smic->state = SMIC_WRITE_END; - } - else { + } else { write_smic_control(smic, SMIC_CC_SMS_WR_NEXT); smic->state = SMIC_WRITE_NEXT; } write_next_byte(smic); write_smic_flags(smic, flags | SMIC_FLAG_BSY); - } - else { + } else return SI_SM_CALL_WITH_DELAY; - } break; case SMIC_WRITE_END: if (status != SMIC_SC_SMS_WR_END) { - start_error_recovery (smic, - "state = SMIC_WRITE_END, " - "status != SMIC_SC_SMS_WR_END"); + start_error_recovery(smic, + "state = SMIC_WRITE_END, " + "status != SMIC_SC_SMS_WR_END"); return SI_SM_CALL_WITH_DELAY; } /* data register holds an error code */ data = read_smic_data(smic); if (data != 0) { - if (smic_debug & SMIC_DEBUG_ENABLE) { - printk(KERN_INFO + if (smic_debug & SMIC_DEBUG_ENABLE) + printk(KERN_DEBUG "SMIC_WRITE_END: data = %02x\n", data); - } start_error_recovery(smic, "state = SMIC_WRITE_END, " "data != SUCCESS"); return SI_SM_CALL_WITH_DELAY; - } else { + } else smic->state = SMIC_WRITE2READ; - } break; case SMIC_WRITE2READ: - /* we must wait for RX_DATA_READY to be set before we - can continue */ + /* + * we must wait for RX_DATA_READY to be set before we + * can continue + */ if (flags & SMIC_RX_DATA_READY) { write_smic_control(smic, SMIC_CC_SMS_RD_START); write_smic_flags(smic, flags | SMIC_FLAG_BSY); smic->state = SMIC_READ_START; - } else { + } else return SI_SM_CALL_WITH_DELAY; - } break; case SMIC_READ_START: @@ -502,15 +495,16 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) write_smic_control(smic, SMIC_CC_SMS_RD_NEXT); write_smic_flags(smic, flags | SMIC_FLAG_BSY); smic->state = SMIC_READ_NEXT; - } else { + } else return SI_SM_CALL_WITH_DELAY; - } break; case SMIC_READ_NEXT: switch (status) { - /* smic tells us that this is the last byte to be read - --> clean up */ + /* + * smic tells us that this is the last byte to be read + * --> clean up + */ case SMIC_SC_SMS_RD_END: read_next_byte(smic); write_smic_control(smic, SMIC_CC_SMS_RD_END); @@ -523,9 +517,8 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) write_smic_control(smic, SMIC_CC_SMS_RD_NEXT); write_smic_flags(smic, flags | SMIC_FLAG_BSY); smic->state = SMIC_READ_NEXT; - } else { + } else return SI_SM_CALL_WITH_DELAY; - } break; default: start_error_recovery( @@ -546,10 +539,9 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) data = read_smic_data(smic); /* data register holds an error code */ if (data != 0) { - if (smic_debug & SMIC_DEBUG_ENABLE) { - printk(KERN_INFO + if (smic_debug & SMIC_DEBUG_ENABLE) + printk(KERN_DEBUG "SMIC_READ_END: data = %02x\n", data); - } start_error_recovery(smic, "state = SMIC_READ_END, " "data != SUCCESS"); @@ -565,7 +557,7 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) default: if (smic_debug & SMIC_DEBUG_ENABLE) { - printk(KERN_WARNING "smic->state = %d\n", smic->state); + printk(KERN_DEBUG "smic->state = %d\n", smic->state); start_error_recovery(smic, "state = UNKNOWN"); return SI_SM_CALL_WITH_DELAY; } @@ -576,10 +568,12 @@ static enum si_sm_result smic_event (struct si_sm_data *smic, long time) static int smic_detect(struct si_sm_data *smic) { - /* It's impossible for the SMIC fnags register to be all 1's, - (assuming a properly functioning, self-initialized BMC) - but that's what you get from reading a bogus address, so we - test that first. */ + /* + * It's impossible for the SMIC fnags register to be all 1's, + * (assuming a properly functioning, self-initialized BMC) + * but that's what you get from reading a bogus address, so we + * test that first. + */ if (read_smic_flags(smic) == 0xff) return 1; @@ -595,8 +589,7 @@ static int smic_size(void) return sizeof(struct si_sm_data); } -struct si_sm_handlers smic_smi_handlers = -{ +struct si_sm_handlers smic_smi_handlers = { .init_data = init_smic_data, .start_transaction = start_smic_transaction, .get_result = smic_get_result, diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c index 8f45ca9235a..1b9a8704781 100644 --- a/drivers/char/ipmi/ipmi_watchdog.c +++ b/drivers/char/ipmi/ipmi_watchdog.c @@ -54,13 +54,15 @@ #include <asm/atomic.h> #ifdef CONFIG_X86 -/* This is ugly, but I've determined that x86 is the only architecture - that can reasonably support the IPMI NMI watchdog timeout at this - time. If another architecture adds this capability somehow, it - will have to be a somewhat different mechanism and I have no idea - how it will work. So in the unlikely event that another - architecture supports this, we can figure out a good generic - mechanism for it at that time. */ +/* + * This is ugly, but I've determined that x86 is the only architecture + * that can reasonably support the IPMI NMI watchdog timeout at this + * time. If another architecture adds this capability somehow, it + * will have to be a somewhat different mechanism and I have no idea + * how it will work. So in the unlikely event that another + * architecture supports this, we can figure out a good generic + * mechanism for it at that time. + */ #include <asm/kdebug.h> #define HAVE_DIE_NMI #endif @@ -95,9 +97,8 @@ /* Operations that can be performed on a pretimout. */ #define WDOG_PREOP_NONE 0 #define WDOG_PREOP_PANIC 1 -#define WDOG_PREOP_GIVE_DATA 2 /* Cause data to be available to - read. Doesn't work in NMI - mode. */ +/* Cause data to be available to read. Doesn't work in NMI mode. */ +#define WDOG_PREOP_GIVE_DATA 2 /* Actions to perform on a full timeout. */ #define WDOG_SET_TIMEOUT_ACT(byte, use) \ @@ -108,8 +109,10 @@ #define WDOG_TIMEOUT_POWER_DOWN 2 #define WDOG_TIMEOUT_POWER_CYCLE 3 -/* Byte 3 of the get command, byte 4 of the get response is the - pre-timeout in seconds. */ +/* + * Byte 3 of the get command, byte 4 of the get response is the + * pre-timeout in seconds. + */ /* Bits for setting byte 4 of the set command, byte 5 of the get response. */ #define WDOG_EXPIRE_CLEAR_BIOS_FRB2 (1 << 1) @@ -118,11 +121,13 @@ #define WDOG_EXPIRE_CLEAR_SMS_OS (1 << 4) #define WDOG_EXPIRE_CLEAR_OEM (1 << 5) -/* Setting/getting the watchdog timer value. This is for bytes 5 and - 6 (the timeout time) of the set command, and bytes 6 and 7 (the - timeout time) and 8 and 9 (the current countdown value) of the - response. The timeout value is given in seconds (in the command it - is 100ms intervals). */ +/* + * Setting/getting the watchdog timer value. This is for bytes 5 and + * 6 (the timeout time) of the set command, and bytes 6 and 7 (the + * timeout time) and 8 and 9 (the current countdown value) of the + * response. The timeout value is given in seconds (in the command it + * is 100ms intervals). + */ #define WDOG_SET_TIMEOUT(byte1, byte2, val) \ (byte1) = (((val) * 10) & 0xff), (byte2) = (((val) * 10) >> 8) #define WDOG_GET_TIMEOUT(byte1, byte2) \ @@ -184,8 +189,10 @@ static int ipmi_set_timeout(int do_heartbeat); static void ipmi_register_watchdog(int ipmi_intf); static void ipmi_unregister_watchdog(int ipmi_intf); -/* If true, the driver will start running as soon as it is configured - and ready. */ +/* + * If true, the driver will start running as soon as it is configured + * and ready. + */ static int start_now; static int set_param_int(const char *val, struct kernel_param *kp) @@ -309,10 +316,12 @@ static int ipmi_ignore_heartbeat; /* Is someone using the watchdog? Only one user is allowed. */ static unsigned long ipmi_wdog_open; -/* If set to 1, the heartbeat command will set the state to reset and - start the timer. The timer doesn't normally run when the driver is - first opened until the heartbeat is set the first time, this - variable is used to accomplish this. */ +/* + * If set to 1, the heartbeat command will set the state to reset and + * start the timer. The timer doesn't normally run when the driver is + * first opened until the heartbeat is set the first time, this + * variable is used to accomplish this. + */ static int ipmi_start_timer_on_heartbeat; /* IPMI version of the BMC. */ @@ -329,10 +338,12 @@ static int nmi_handler_registered; static int ipmi_heartbeat(void); -/* We use a mutex to make sure that only one thing can send a set - timeout at one time, because we only have one copy of the data. - The mutex is claimed when the set_timeout is sent and freed - when both messages are free. */ +/* + * We use a mutex to make sure that only one thing can send a set + * timeout at one time, because we only have one copy of the data. + * The mutex is claimed when the set_timeout is sent and freed + * when both messages are free. + */ static atomic_t set_timeout_tofree = ATOMIC_INIT(0); static DEFINE_MUTEX(set_timeout_lock); static DECLARE_COMPLETION(set_timeout_wait); @@ -346,15 +357,13 @@ static void set_timeout_free_recv(struct ipmi_recv_msg *msg) if (atomic_dec_and_test(&set_timeout_tofree)) complete(&set_timeout_wait); } -static struct ipmi_smi_msg set_timeout_smi_msg = -{ +static struct ipmi_smi_msg set_timeout_smi_msg = { .done = set_timeout_free_smi }; -static struct ipmi_recv_msg set_timeout_recv_msg = -{ +static struct ipmi_recv_msg set_timeout_recv_msg = { .done = set_timeout_free_recv }; - + static int i_ipmi_set_timeout(struct ipmi_smi_msg *smi_msg, struct ipmi_recv_msg *recv_msg, int *send_heartbeat_now) @@ -373,13 +382,14 @@ static int i_ipmi_set_timeout(struct ipmi_smi_msg *smi_msg, WDOG_SET_TIMER_USE(data[0], WDOG_TIMER_USE_SMS_OS); if ((ipmi_version_major > 1) - || ((ipmi_version_major == 1) && (ipmi_version_minor >= 5))) - { + || ((ipmi_version_major == 1) && (ipmi_version_minor >= 5))) { /* This is an IPMI 1.5-only feature. */ data[0] |= WDOG_DONT_STOP_ON_SET; } else if (ipmi_watchdog_state != WDOG_TIMEOUT_NONE) { - /* In ipmi 1.0, setting the timer stops the watchdog, we - need to start it back up again. */ + /* + * In ipmi 1.0, setting the timer stops the watchdog, we + * need to start it back up again. + */ hbnow = 1; } @@ -465,12 +475,10 @@ static void panic_recv_free(struct ipmi_recv_msg *msg) atomic_dec(&panic_done_count); } -static struct ipmi_smi_msg panic_halt_heartbeat_smi_msg = -{ +static struct ipmi_smi_msg panic_halt_heartbeat_smi_msg = { .done = panic_smi_free }; -static struct ipmi_recv_msg panic_halt_heartbeat_recv_msg = -{ +static struct ipmi_recv_msg panic_halt_heartbeat_recv_msg = { .done = panic_recv_free }; @@ -480,8 +488,10 @@ static void panic_halt_ipmi_heartbeat(void) struct ipmi_system_interface_addr addr; int rv; - /* Don't reset the timer if we have the timer turned off, that - re-enables the watchdog. */ + /* + * Don't reset the timer if we have the timer turned off, that + * re-enables the watchdog. + */ if (ipmi_watchdog_state == WDOG_TIMEOUT_NONE) return; @@ -505,19 +515,19 @@ static void panic_halt_ipmi_heartbeat(void) atomic_add(2, &panic_done_count); } -static struct ipmi_smi_msg panic_halt_smi_msg = -{ +static struct ipmi_smi_msg panic_halt_smi_msg = { .done = panic_smi_free }; -static struct ipmi_recv_msg panic_halt_recv_msg = -{ +static struct ipmi_recv_msg panic_halt_recv_msg = { .done = panic_recv_free }; -/* Special call, doesn't claim any locks. This is only to be called - at panic or halt time, in run-to-completion mode, when the caller - is the only CPU and the only thing that will be going is these IPMI - calls. */ +/* + * Special call, doesn't claim any locks. This is only to be called + * at panic or halt time, in run-to-completion mode, when the caller + * is the only CPU and the only thing that will be going is these IPMI + * calls. + */ static void panic_halt_ipmi_set_timeout(void) { int send_heartbeat_now; @@ -540,10 +550,12 @@ static void panic_halt_ipmi_set_timeout(void) ipmi_poll_interface(watchdog_user); } -/* We use a semaphore to make sure that only one thing can send a - heartbeat at one time, because we only have one copy of the data. - The semaphore is claimed when the set_timeout is sent and freed - when both messages are free. */ +/* + * We use a mutex to make sure that only one thing can send a + * heartbeat at one time, because we only have one copy of the data. + * The semaphore is claimed when the set_timeout is sent and freed + * when both messages are free. + */ static atomic_t heartbeat_tofree = ATOMIC_INIT(0); static DEFINE_MUTEX(heartbeat_lock); static DECLARE_COMPLETION(heartbeat_wait); @@ -557,15 +569,13 @@ static void heartbeat_free_recv(struct ipmi_recv_msg *msg) if (atomic_dec_and_test(&heartbeat_tofree)) complete(&heartbeat_wait); } -static struct ipmi_smi_msg heartbeat_smi_msg = -{ +static struct ipmi_smi_msg heartbeat_smi_msg = { .done = heartbeat_free_smi }; -static struct ipmi_recv_msg heartbeat_recv_msg = -{ +static struct ipmi_recv_msg heartbeat_recv_msg = { .done = heartbeat_free_recv }; - + static int ipmi_heartbeat(void) { struct kernel_ipmi_msg msg; @@ -580,10 +590,12 @@ static int ipmi_heartbeat(void) ipmi_watchdog_state = action_val; return ipmi_set_timeout(IPMI_SET_TIMEOUT_FORCE_HB); } else if (pretimeout_since_last_heartbeat) { - /* A pretimeout occurred, make sure we set the timeout. - We don't want to set the action, though, we want to - leave that alone (thus it can't be combined with the - above operation. */ + /* + * A pretimeout occurred, make sure we set the timeout. + * We don't want to set the action, though, we want to + * leave that alone (thus it can't be combined with the + * above operation. + */ return ipmi_set_timeout(IPMI_SET_TIMEOUT_HB_IF_NECESSARY); } @@ -591,8 +603,10 @@ static int ipmi_heartbeat(void) atomic_set(&heartbeat_tofree, 2); - /* Don't reset the timer if we have the timer turned off, that - re-enables the watchdog. */ + /* + * Don't reset the timer if we have the timer turned off, that + * re-enables the watchdog. + */ if (ipmi_watchdog_state == WDOG_TIMEOUT_NONE) { mutex_unlock(&heartbeat_lock); return 0; @@ -625,10 +639,12 @@ static int ipmi_heartbeat(void) wait_for_completion(&heartbeat_wait); if (heartbeat_recv_msg.msg.data[0] != 0) { - /* Got an error in the heartbeat response. It was already - reported in ipmi_wdog_msg_handler, but we should return - an error here. */ - rv = -EINVAL; + /* + * Got an error in the heartbeat response. It was already + * reported in ipmi_wdog_msg_handler, but we should return + * an error here. + */ + rv = -EINVAL; } mutex_unlock(&heartbeat_lock); @@ -636,8 +652,7 @@ static int ipmi_heartbeat(void) return rv; } -static struct watchdog_info ident = -{ +static struct watchdog_info ident = { .options = 0, /* WDIOF_SETTIMEOUT, */ .firmware_version = 1, .identity = "IPMI" @@ -650,7 +665,7 @@ static int ipmi_ioctl(struct inode *inode, struct file *file, int i; int val; - switch(cmd) { + switch (cmd) { case WDIOC_GETSUPPORT: i = copy_to_user(argp, &ident, sizeof(ident)); return i ? -EFAULT : 0; @@ -690,15 +705,13 @@ static int ipmi_ioctl(struct inode *inode, struct file *file, i = copy_from_user(&val, argp, sizeof(int)); if (i) return -EFAULT; - if (val & WDIOS_DISABLECARD) - { + if (val & WDIOS_DISABLECARD) { ipmi_watchdog_state = WDOG_TIMEOUT_NONE; ipmi_set_timeout(IPMI_SET_TIMEOUT_NO_HB); ipmi_start_timer_on_heartbeat = 0; } - if (val & WDIOS_ENABLECARD) - { + if (val & WDIOS_ENABLECARD) { ipmi_watchdog_state = action_val; ipmi_set_timeout(IPMI_SET_TIMEOUT_FORCE_HB); } @@ -724,13 +737,13 @@ static ssize_t ipmi_write(struct file *file, int rv; if (len) { - if (!nowayout) { - size_t i; + if (!nowayout) { + size_t i; /* In case it was set long ago */ expect_close = 0; - for (i = 0; i != len; i++) { + for (i = 0; i != len; i++) { char c; if (get_user(c, buf + i)) @@ -758,15 +771,17 @@ static ssize_t ipmi_read(struct file *file, if (count <= 0) return 0; - /* Reading returns if the pretimeout has gone off, and it only does - it once per pretimeout. */ + /* + * Reading returns if the pretimeout has gone off, and it only does + * it once per pretimeout. + */ spin_lock(&ipmi_read_lock); if (!data_to_read) { if (file->f_flags & O_NONBLOCK) { rv = -EAGAIN; goto out; } - + init_waitqueue_entry(&wait, current); add_wait_queue(&read_q, &wait); while (!data_to_read) { @@ -776,7 +791,7 @@ static ssize_t ipmi_read(struct file *file, spin_lock(&ipmi_read_lock); } remove_wait_queue(&read_q, &wait); - + if (signal_pending(current)) { rv = -ERESTARTSYS; goto out; @@ -799,25 +814,27 @@ static ssize_t ipmi_read(struct file *file, static int ipmi_open(struct inode *ino, struct file *filep) { - switch (iminor(ino)) { - case WATCHDOG_MINOR: + switch (iminor(ino)) { + case WATCHDOG_MINOR: if (test_and_set_bit(0, &ipmi_wdog_open)) - return -EBUSY; + return -EBUSY; - /* Don't start the timer now, let it start on the - first heartbeat. */ + /* + * Don't start the timer now, let it start on the + * first heartbeat. + */ ipmi_start_timer_on_heartbeat = 1; return nonseekable_open(ino, filep); default: return (-ENODEV); - } + } } static unsigned int ipmi_poll(struct file *file, poll_table *wait) { unsigned int mask = 0; - + poll_wait(file, &read_q, wait); spin_lock(&ipmi_read_lock); @@ -851,7 +868,7 @@ static int ipmi_close(struct inode *ino, struct file *filep) clear_bit(0, &ipmi_wdog_open); } - ipmi_fasync (-1, filep, 0); + ipmi_fasync(-1, filep, 0); expect_close = 0; return 0; @@ -882,7 +899,7 @@ static void ipmi_wdog_msg_handler(struct ipmi_recv_msg *msg, msg->msg.data[0], msg->msg.cmd); } - + ipmi_free_recv_msg(msg); } @@ -902,14 +919,14 @@ static void ipmi_wdog_pretimeout_handler(void *handler_data) } } - /* On some machines, the heartbeat will give - an error and not work unless we re-enable - the timer. So do so. */ + /* + * On some machines, the heartbeat will give an error and not + * work unless we re-enable the timer. So do so. + */ pretimeout_since_last_heartbeat = 1; } -static struct ipmi_user_hndl ipmi_hndlrs = -{ +static struct ipmi_user_hndl ipmi_hndlrs = { .ipmi_recv_hndl = ipmi_wdog_msg_handler, .ipmi_watchdog_pretimeout = ipmi_wdog_pretimeout_handler }; @@ -949,8 +966,10 @@ static void ipmi_register_watchdog(int ipmi_intf) int old_timeout = timeout; int old_preop_val = preop_val; - /* Set the pretimeout to go off in a second and give - ourselves plenty of time to stop the timer. */ + /* + * Set the pretimeout to go off in a second and give + * ourselves plenty of time to stop the timer. + */ ipmi_watchdog_state = WDOG_TIMEOUT_RESET; preop_val = WDOG_PREOP_NONE; /* Make sure nothing happens */ pretimeout = 99; @@ -974,7 +993,7 @@ static void ipmi_register_watchdog(int ipmi_intf) " occur. The NMI pretimeout will" " likely not work\n"); } - out_restore: + out_restore: testing_nmi = 0; preop_val = old_preop_val; pretimeout = old_pretimeout; @@ -1009,9 +1028,11 @@ static void ipmi_unregister_watchdog(int ipmi_intf) /* Make sure no one can call us any more. */ misc_deregister(&ipmi_wdog_miscdev); - /* Wait to make sure the message makes it out. The lower layer has - pointers to our buffers, we want to make sure they are done before - we release our memory. */ + /* + * Wait to make sure the message makes it out. The lower layer has + * pointers to our buffers, we want to make sure they are done before + * we release our memory. + */ while (atomic_read(&set_timeout_tofree)) schedule_timeout_uninterruptible(1); @@ -1052,15 +1073,17 @@ ipmi_nmi(struct notifier_block *self, unsigned long val, void *data) return NOTIFY_STOP; } - /* If we are not expecting a timeout, ignore it. */ + /* If we are not expecting a timeout, ignore it. */ if (ipmi_watchdog_state == WDOG_TIMEOUT_NONE) return NOTIFY_OK; if (preaction_val != WDOG_PRETIMEOUT_NMI) return NOTIFY_OK; - /* If no one else handled the NMI, we assume it was the IPMI - watchdog. */ + /* + * If no one else handled the NMI, we assume it was the IPMI + * watchdog. + */ if (preop_val == WDOG_PREOP_PANIC) { /* On some machines, the heartbeat will give an error and not work unless we re-enable @@ -1082,7 +1105,7 @@ static int wdog_reboot_handler(struct notifier_block *this, unsigned long code, void *unused) { - static int reboot_event_handled = 0; + static int reboot_event_handled; if ((watchdog_user) && (!reboot_event_handled)) { /* Make sure we only do this once. */ @@ -1115,7 +1138,7 @@ static int wdog_panic_handler(struct notifier_block *this, unsigned long event, void *unused) { - static int panic_event_handled = 0; + static int panic_event_handled; /* On a panic, if we have a panic timeout, make sure to extend the watchdog timer to a reasonable value to complete the @@ -1125,7 +1148,7 @@ static int wdog_panic_handler(struct notifier_block *this, ipmi_watchdog_state != WDOG_TIMEOUT_NONE) { /* Make sure we do this only once. */ panic_event_handled = 1; - + timeout = 255; pretimeout = 0; panic_halt_ipmi_set_timeout(); @@ -1151,8 +1174,7 @@ static void ipmi_smi_gone(int if_num) ipmi_unregister_watchdog(if_num); } -static struct ipmi_smi_watcher smi_watcher = -{ +static struct ipmi_smi_watcher smi_watcher = { .owner = THIS_MODULE, .new_smi = ipmi_new_smi, .smi_gone = ipmi_smi_gone diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index eba2883b630..4f3cefa8eb0 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -126,8 +126,8 @@ #include <linux/delay.h> #include <linux/ioport.h> -#include <asm/uaccess.h> -#include <asm/io.h> +#include <linux/uaccess.h> +#include <linux/io.h> #include <asm/system.h> #include <linux/pci.h> @@ -189,7 +189,7 @@ struct isi_board { unsigned short status; unsigned short port_status; /* each bit for each port */ unsigned short shift_count; - struct isi_port * ports; + struct isi_port *ports; signed char count; spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ unsigned long flags; @@ -205,11 +205,11 @@ struct isi_port { u16 channel; u16 status; u16 closing_wait; - struct isi_board * card; - struct tty_struct * tty; + struct isi_board *card; + struct tty_struct *tty; wait_queue_head_t close_wait; wait_queue_head_t open_wait; - unsigned char * xmit_buf; + unsigned char *xmit_buf; int xmit_head; int xmit_tail; int xmit_cnt; @@ -405,7 +405,7 @@ static void isicom_tx(unsigned long _data) /* find next active board */ card = (prev_card + 1) & 0x0003; - while(count-- > 0) { + while (count-- > 0) { if (isi_card[card].status & BOARD_ACTIVE) break; card = (card + 1) & 0x0003; @@ -428,7 +428,7 @@ static void isicom_tx(unsigned long _data) if (retries >= 100) goto unlock; - for (;count > 0;count--, port++) { + for (; count > 0; count--, port++) { /* port not active or tx disabled to force flow control */ if (!(port->flags & ASYNC_INITIALIZED) || !(port->status & ISI_TXOK)) @@ -471,9 +471,10 @@ static void isicom_tx(unsigned long _data) break; } } - if (cnt <= 0) break; + if (cnt <= 0) + break; word_count = cnt >> 1; - outsw(base, port->xmit_buf+port->xmit_tail,word_count); + outsw(base, port->xmit_buf+port->xmit_tail, word_count); port->xmit_tail = (port->xmit_tail + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1); txcount -= (word_count << 1); @@ -556,7 +557,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) tty = port->tty; if (tty == NULL) { word_count = byte_count >> 1; - while(byte_count > 1) { + while (byte_count > 1) { inw(base); byte_count -= 2; } @@ -569,7 +570,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) if (header & 0x8000) { /* Status Packet */ header = inw(base); - switch(header & 0xff) { + switch (header & 0xff) { case 0: /* Change in EIA signals */ if (port->flags & ASYNC_CHECK_CD) { if (port->status & ISI_DCD) { @@ -656,7 +657,8 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) if (byte_count > 0) { pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping " "bytes...\n", base, channel + 1); - while(byte_count > 0) { /* drain out unread xtra data */ + /* drain out unread xtra data */ + while (byte_count > 0) { inw(base); byte_count -= 2; } @@ -679,8 +681,11 @@ static void isicom_config_port(struct isi_port *port) shift_count = card->shift_count; unsigned char flow_ctrl; - if (!(tty = port->tty) || !tty->termios) + tty = port->tty; + + if (tty == NULL) return; + /* FIXME: Switch to new tty baud API */ baud = C_BAUD(tty); if (baud & CBAUDEX) { baud &= ~CBAUDEX; @@ -706,7 +711,7 @@ static void isicom_config_port(struct isi_port *port) if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) baud++; /* 57.6 Kbps */ if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - baud +=2; /* 115 Kbps */ + baud += 2; /* 115 Kbps */ if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) baud += 3; /* 230 kbps*/ if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) @@ -716,15 +721,14 @@ static void isicom_config_port(struct isi_port *port) /* hang up */ drop_dtr(port); return; - } - else + } else raise_dtr(port); if (WaitTillCardIsFree(base) == 0) { - outw(0x8000 | (channel << shift_count) |0x03, base); + outw(0x8000 | (channel << shift_count) | 0x03, base); outw(linuxb_to_isib[baud] << 8 | 0x03, base); channel_setup = 0; - switch(C_CSIZE(tty)) { + switch (C_CSIZE(tty)) { case CS5: channel_setup |= ISICOM_CS5; break; @@ -767,7 +771,7 @@ static void isicom_config_port(struct isi_port *port) flow_ctrl |= ISICOM_INITIATE_XONXOFF; if (WaitTillCardIsFree(base) == 0) { - outw(0x8000 | (channel << shift_count) |0x04, base); + outw(0x8000 | (channel << shift_count) | 0x04, base); outw(flow_ctrl << 8 | 0x05, base); outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); InterruptTheCard(base); @@ -805,20 +809,17 @@ static int isicom_setup_port(struct isi_port *port) struct isi_board *card = port->card; unsigned long flags; - if (port->flags & ASYNC_INITIALIZED) { + if (port->flags & ASYNC_INITIALIZED) return 0; - } if (!port->xmit_buf) { - unsigned long page; - - if (!(page = get_zeroed_page(GFP_KERNEL))) + /* Relies on BKL */ + unsigned long page = get_zeroed_page(GFP_KERNEL); + if (page == 0) return -ENOMEM; - - if (port->xmit_buf) { + if (port->xmit_buf) free_page(page); - return -ERESTARTSYS; - } - port->xmit_buf = (unsigned char *) page; + else + port->xmit_buf = (unsigned char *) page; } spin_lock_irqsave(&card->card_lock, flags); @@ -949,21 +950,18 @@ static int isicom_open(struct tty_struct *tty, struct file *filp) port->count++; tty->driver_data = port; port->tty = tty; - if ((error = isicom_setup_port(port))!=0) - return error; - if ((error = block_til_ready(tty, filp, port))!=0) - return error; - - return 0; + error = isicom_setup_port(port); + if (error == 0) + error = block_til_ready(tty, filp, port); + return error; } /* close et all */ static inline void isicom_shutdown_board(struct isi_board *bp) { - if (bp->status & BOARD_ACTIVE) { + if (bp->status & BOARD_ACTIVE) bp->status &= ~BOARD_ACTIVE; - } } /* card->lock HAS to be held */ @@ -1012,6 +1010,22 @@ static void isicom_shutdown_port(struct isi_port *port) } } +static void isicom_flush_buffer(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + struct isi_board *card = port->card; + unsigned long flags; + + if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) + return; + + spin_lock_irqsave(&card->card_lock, flags); + port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; + spin_unlock_irqrestore(&card->card_lock, flags); + + tty_wakeup(tty); +} + static void isicom_close(struct tty_struct *tty, struct file *filp) { struct isi_port *port = tty->driver_data; @@ -1065,8 +1079,7 @@ static void isicom_close(struct tty_struct *tty, struct file *filp) isicom_shutdown_port(port); spin_unlock_irqrestore(&card->card_lock, flags); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + isicom_flush_buffer(tty); tty_ldisc_flush(tty); spin_lock_irqsave(&card->card_lock, flags); @@ -1104,7 +1117,7 @@ static int isicom_write(struct tty_struct *tty, const unsigned char *buf, spin_lock_irqsave(&card->card_lock, flags); - while(1) { + while (1) { cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, SERIAL_XMIT_SIZE - port->xmit_head)); if (cnt <= 0) @@ -1125,28 +1138,29 @@ static int isicom_write(struct tty_struct *tty, const unsigned char *buf, } /* put_char et all */ -static void isicom_put_char(struct tty_struct *tty, unsigned char ch) +static int isicom_put_char(struct tty_struct *tty, unsigned char ch) { struct isi_port *port = tty->driver_data; struct isi_board *card = port->card; unsigned long flags; if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) - return; + return 0; if (!port->xmit_buf) - return; + return 0; spin_lock_irqsave(&card->card_lock, flags); if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { spin_unlock_irqrestore(&card->card_lock, flags); - return; + return 0; } port->xmit_buf[port->xmit_head++] = ch; port->xmit_head &= (SERIAL_XMIT_SIZE - 1); port->xmit_cnt++; spin_unlock_irqrestore(&card->card_lock, flags); + return 1; } /* flush_chars et all */ @@ -1258,6 +1272,8 @@ static int isicom_set_serial_info(struct isi_port *port, if (copy_from_user(&newinfo, info, sizeof(newinfo))) return -EFAULT; + lock_kernel(); + reconfig_port = ((port->flags & ASYNC_SPD_MASK) != (newinfo.flags & ASYNC_SPD_MASK)); @@ -1265,12 +1281,13 @@ static int isicom_set_serial_info(struct isi_port *port, if ((newinfo.close_delay != port->close_delay) || (newinfo.closing_wait != port->closing_wait) || ((newinfo.flags & ~ASYNC_USR_MASK) != - (port->flags & ~ASYNC_USR_MASK))) + (port->flags & ~ASYNC_USR_MASK))) { + unlock_kernel(); return -EPERM; - port->flags = ((port->flags & ~ ASYNC_USR_MASK) | + } + port->flags = ((port->flags & ~ASYNC_USR_MASK) | (newinfo.flags & ASYNC_USR_MASK)); - } - else { + } else { port->close_delay = newinfo.close_delay; port->closing_wait = newinfo.closing_wait; port->flags = ((port->flags & ~ASYNC_FLAGS) | @@ -1282,6 +1299,7 @@ static int isicom_set_serial_info(struct isi_port *port, isicom_config_port(port); spin_unlock_irqrestore(&port->card->card_lock, flags); } + unlock_kernel(); return 0; } @@ -1290,6 +1308,7 @@ static int isicom_get_serial_info(struct isi_port *port, { struct serial_struct out_info; + lock_kernel(); memset(&out_info, 0, sizeof(out_info)); /* out_info.type = ? */ out_info.line = port - isi_ports; @@ -1299,6 +1318,7 @@ static int isicom_get_serial_info(struct isi_port *port, /* out_info.baud_base = ? */ out_info.close_delay = port->close_delay; out_info.closing_wait = port->closing_wait; + unlock_kernel(); if (copy_to_user(info, &out_info, sizeof(out_info))) return -EFAULT; return 0; @@ -1314,7 +1334,7 @@ static int isicom_ioctl(struct tty_struct *tty, struct file *filp, if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) return -ENODEV; - switch(cmd) { + switch (cmd) { case TCSBRK: retval = tty_check_change(tty); if (retval) @@ -1331,19 +1351,6 @@ static int isicom_ioctl(struct tty_struct *tty, struct file *filp, tty_wait_until_sent(tty, 0); isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4); return 0; - - case TIOCGSOFTCAR: - return put_user(C_CLOCAL(tty) ? 1 : 0, - (unsigned long __user *)argp); - - case TIOCSSOFTCAR: - if (get_user(arg, (unsigned long __user *) argp)) - return -EFAULT; - tty->termios->c_cflag = - ((tty->termios->c_cflag & ~CLOCAL) | - (arg ? CLOCAL : 0)); - return 0; - case TIOCGSERIAL: return isicom_get_serial_info(port, argp); @@ -1453,22 +1460,6 @@ static void isicom_hangup(struct tty_struct *tty) wake_up_interruptible(&port->open_wait); } -/* flush_buffer et all */ -static void isicom_flush_buffer(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - struct isi_board *card = port->card; - unsigned long flags; - - if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) - return; - - spin_lock_irqsave(&card->card_lock, flags); - port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; - spin_unlock_irqrestore(&card->card_lock, flags); - - tty_wakeup(tty); -} /* * Driver init and deinit functions @@ -1592,7 +1583,7 @@ static int __devinit load_firmware(struct pci_dev *pdev, default: dev_err(&pdev->dev, "Unknown signature.\n"); goto end; - } + } retval = request_firmware(&fw, name, &pdev->dev); if (retval) @@ -1620,7 +1611,8 @@ static int __devinit load_firmware(struct pci_dev *pdev, if (WaitTillCardIsFree(base)) goto errrelfw; - if ((status = inw(base + 0x4)) != 0) { + status = inw(base + 0x4); + if (status != 0) { dev_warn(&pdev->dev, "Card%d rejected load header:\n" KERN_WARNING "Address:0x%x\n" KERN_WARNING "Count:0x%x\n" @@ -1637,12 +1629,13 @@ static int __devinit load_firmware(struct pci_dev *pdev, if (WaitTillCardIsFree(base)) goto errrelfw; - if ((status = inw(base + 0x4)) != 0) { + status = inw(base + 0x4); + if (status != 0) { dev_err(&pdev->dev, "Card%d got out of sync.Card " "Status:0x%x\n", index + 1, status); goto errrelfw; } - } + } /* XXX: should we test it by reading it back and comparing with original like * in load firmware package? */ @@ -1666,7 +1659,8 @@ static int __devinit load_firmware(struct pci_dev *pdev, if (WaitTillCardIsFree(base)) goto errrelfw; - if ((status = inw(base + 0x4)) != 0) { + status = inw(base + 0x4); + if (status != 0) { dev_warn(&pdev->dev, "Card%d rejected verify header:\n" KERN_WARNING "Address:0x%x\n" KERN_WARNING "Count:0x%x\n" @@ -1699,7 +1693,8 @@ static int __devinit load_firmware(struct pci_dev *pdev, if (WaitTillCardIsFree(base)) goto errrelfw; - if ((status = inw(base + 0x4)) != 0) { + status = inw(base + 0x4); + if (status != 0) { dev_err(&pdev->dev, "Card%d verify got out of sync. " "Card Status:0x%x\n", index + 1, status); goto errrelfw; @@ -1764,7 +1759,7 @@ static int __devinit isicom_probe(struct pci_dev *pdev, index + 1); retval = -EBUSY; goto errdec; - } + } retval = request_irq(board->irq, isicom_interrupt, IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board); @@ -1818,7 +1813,7 @@ static int __init isicom_init(void) int retval, idx, channel; struct isi_port *port; - for(idx = 0; idx < BOARD_COUNT; idx++) { + for (idx = 0; idx < BOARD_COUNT; idx++) { port = &isi_ports[idx * 16]; isi_card[idx].ports = port; spin_lock_init(&isi_card[idx].card_lock); @@ -1832,7 +1827,7 @@ static int __init isicom_init(void) init_waitqueue_head(&port->open_wait); init_waitqueue_head(&port->close_wait); /* . . . */ - } + } isi_card[idx].base = 0; isi_card[idx].irq = 0; } diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c index c645455c3fd..7c8b62f162b 100644 --- a/drivers/char/istallion.c +++ b/drivers/char/istallion.c @@ -1682,16 +1682,6 @@ static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cm rc = 0; switch (cmd) { - case TIOCGSOFTCAR: - rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), - (unsigned __user *) arg); - break; - case TIOCSSOFTCAR: - if ((rc = get_user(ival, (unsigned __user *) arg)) == 0) - tty->termios->c_cflag = - (tty->termios->c_cflag & ~CLOCAL) | - (ival ? CLOCAL : 0); - break; case TIOCGSERIAL: rc = stli_getserial(portp, argp); break; @@ -3267,7 +3257,7 @@ static int stli_initecp(struct stlibrd *brdp) */ EBRDINIT(brdp); - brdp->membase = ioremap(brdp->memaddr, brdp->memsize); + brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); if (brdp->membase == NULL) { retval = -ENOMEM; goto err_reg; @@ -3424,7 +3414,7 @@ static int stli_initonb(struct stlibrd *brdp) */ EBRDINIT(brdp); - brdp->membase = ioremap(brdp->memaddr, brdp->memsize); + brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); if (brdp->membase == NULL) { retval = -ENOMEM; goto err_reg; @@ -3675,7 +3665,7 @@ static int stli_eisamemprobe(struct stlibrd *brdp) */ for (i = 0; (i < stli_eisamempsize); i++) { brdp->memaddr = stli_eisamemprobeaddrs[i]; - brdp->membase = ioremap(brdp->memaddr, brdp->memsize); + brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); if (brdp->membase == NULL) continue; @@ -4433,6 +4423,8 @@ static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, un done = 0; rc = 0; + lock_kernel(); + switch (cmd) { case COM_GETPORTSTATS: rc = stli_getportstats(NULL, argp); @@ -4455,6 +4447,7 @@ static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, un done++; break; } + unlock_kernel(); if (done) return rc; @@ -4472,6 +4465,8 @@ static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, un if (brdp->state == 0) return -ENODEV; + lock_kernel(); + switch (cmd) { case STL_BINTR: EBRDINTR(brdp); @@ -4494,6 +4489,7 @@ static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, un rc = -ENOIOCTLCMD; break; } + unlock_kernel(); return rc; } diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c index 60b934adea6..7f7e798c138 100644 --- a/drivers/char/keyboard.c +++ b/drivers/char/keyboard.c @@ -110,6 +110,7 @@ const int max_vals[] = { const int NR_TYPES = ARRAY_SIZE(max_vals); struct kbd_struct kbd_table[MAX_NR_CONSOLES]; +EXPORT_SYMBOL_GPL(kbd_table); static struct kbd_struct *kbd = kbd_table; struct vt_spawn_console vt_spawn_con = { @@ -260,6 +261,7 @@ void kd_mksound(unsigned int hz, unsigned int ticks) } else kd_nosound(0); } +EXPORT_SYMBOL(kd_mksound); /* * Setting the keyboard rate. @@ -1230,7 +1232,7 @@ static void kbd_keycode(unsigned int keycode, int down, int hw_raw) if (rep && (!vc_kbd_mode(kbd, VC_REPEAT) || - (tty && !L_ECHO(tty) && tty->driver->chars_in_buffer(tty)))) { + (tty && !L_ECHO(tty) && tty_chars_in_buffer(tty)))) { /* * Don't repeat a key if the input buffers are not empty and the * characters get aren't echoed locally. This makes key repeat diff --git a/drivers/char/mem.c b/drivers/char/mem.c index e83623ead44..934ffafedae 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -364,6 +364,7 @@ static int mmap_mem(struct file * file, struct vm_area_struct * vma) return 0; } +#ifdef CONFIG_DEVKMEM static int mmap_kmem(struct file * file, struct vm_area_struct * vma) { unsigned long pfn; @@ -384,6 +385,7 @@ static int mmap_kmem(struct file * file, struct vm_area_struct * vma) vma->vm_pgoff = pfn; return mmap_mem(file, vma); } +#endif #ifdef CONFIG_CRASH_DUMP /* @@ -422,6 +424,7 @@ static ssize_t read_oldmem(struct file *file, char __user *buf, extern long vread(char *buf, char *addr, unsigned long count); extern long vwrite(char *buf, char *addr, unsigned long count); +#ifdef CONFIG_DEVKMEM /* * This function reads the *virtual* memory as seen by the kernel. */ @@ -626,6 +629,7 @@ static ssize_t write_kmem(struct file * file, const char __user * buf, *ppos = p; return virtr + wrote; } +#endif #ifdef CONFIG_DEVPORT static ssize_t read_port(struct file * file, char __user * buf, @@ -803,6 +807,7 @@ static const struct file_operations mem_fops = { .get_unmapped_area = get_unmapped_area_mem, }; +#ifdef CONFIG_DEVKMEM static const struct file_operations kmem_fops = { .llseek = memory_lseek, .read = read_kmem, @@ -811,6 +816,7 @@ static const struct file_operations kmem_fops = { .open = open_kmem, .get_unmapped_area = get_unmapped_area_mem, }; +#endif static const struct file_operations null_fops = { .llseek = null_lseek, @@ -889,11 +895,13 @@ static int memory_open(struct inode * inode, struct file * filp) filp->f_mapping->backing_dev_info = &directly_mappable_cdev_bdi; break; +#ifdef CONFIG_DEVKMEM case 2: filp->f_op = &kmem_fops; filp->f_mapping->backing_dev_info = &directly_mappable_cdev_bdi; break; +#endif case 3: filp->f_op = &null_fops; break; @@ -942,7 +950,9 @@ static const struct { const struct file_operations *fops; } devlist[] = { /* list of minor devices */ {1, "mem", S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops}, +#ifdef CONFIG_DEVKMEM {2, "kmem", S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops}, +#endif {3, "null", S_IRUGO | S_IWUGO, &null_fops}, #ifdef CONFIG_DEVPORT {4, "port", S_IRUSR | S_IWUSR | S_IRGRP, &port_fops}, diff --git a/drivers/char/misc.c b/drivers/char/misc.c index 4d058dadbfc..eaace0db0ff 100644 --- a/drivers/char/misc.c +++ b/drivers/char/misc.c @@ -263,23 +263,26 @@ EXPORT_SYMBOL(misc_deregister); static int __init misc_init(void) { -#ifdef CONFIG_PROC_FS - struct proc_dir_entry *ent; + int err; - ent = create_proc_entry("misc", 0, NULL); - if (ent) - ent->proc_fops = &misc_proc_fops; +#ifdef CONFIG_PROC_FS + proc_create("misc", 0, NULL, &misc_proc_fops); #endif misc_class = class_create(THIS_MODULE, "misc"); + err = PTR_ERR(misc_class); if (IS_ERR(misc_class)) - return PTR_ERR(misc_class); + goto fail_remove; - if (register_chrdev(MISC_MAJOR,"misc",&misc_fops)) { - printk("unable to get major %d for misc devices\n", - MISC_MAJOR); - class_destroy(misc_class); - return -EIO; - } + err = -EIO; + if (register_chrdev(MISC_MAJOR,"misc",&misc_fops)) + goto fail_printk; return 0; + +fail_printk: + printk("unable to get major %d for misc devices\n", MISC_MAJOR); + class_destroy(misc_class); +fail_remove: + remove_proc_entry("misc", NULL); + return err; } subsys_initcall(misc_init); diff --git a/drivers/char/mmtimer.c b/drivers/char/mmtimer.c index e60a74c66e3..192961fd717 100644 --- a/drivers/char/mmtimer.c +++ b/drivers/char/mmtimer.c @@ -30,6 +30,8 @@ #include <linux/miscdevice.h> #include <linux/posix-timers.h> #include <linux/interrupt.h> +#include <linux/time.h> +#include <linux/math64.h> #include <asm/uaccess.h> #include <asm/sn/addrs.h> @@ -74,9 +76,8 @@ static const struct file_operations mmtimer_fops = { * We only have comparison registers RTC1-4 currently available per * node. RTC0 is used by SAL. */ -#define NUM_COMPARATORS 3 /* Check for an RTC interrupt pending */ -static int inline mmtimer_int_pending(int comparator) +static int mmtimer_int_pending(int comparator) { if (HUB_L((unsigned long *)LOCAL_MMR_ADDR(SH_EVENT_OCCURRED)) & SH_EVENT_OCCURRED_RTC1_INT_MASK << comparator) @@ -84,15 +85,16 @@ static int inline mmtimer_int_pending(int comparator) else return 0; } + /* Clear the RTC interrupt pending bit */ -static void inline mmtimer_clr_int_pending(int comparator) +static void mmtimer_clr_int_pending(int comparator) { HUB_S((u64 *)LOCAL_MMR_ADDR(SH_EVENT_OCCURRED_ALIAS), SH_EVENT_OCCURRED_RTC1_INT_MASK << comparator); } /* Setup timer on comparator RTC1 */ -static void inline mmtimer_setup_int_0(u64 expires) +static void mmtimer_setup_int_0(int cpu, u64 expires) { u64 val; @@ -106,7 +108,7 @@ static void inline mmtimer_setup_int_0(u64 expires) mmtimer_clr_int_pending(0); val = ((u64)SGI_MMTIMER_VECTOR << SH_RTC1_INT_CONFIG_IDX_SHFT) | - ((u64)cpu_physical_id(smp_processor_id()) << + ((u64)cpu_physical_id(cpu) << SH_RTC1_INT_CONFIG_PID_SHFT); /* Set configuration */ @@ -122,7 +124,7 @@ static void inline mmtimer_setup_int_0(u64 expires) } /* Setup timer on comparator RTC2 */ -static void inline mmtimer_setup_int_1(u64 expires) +static void mmtimer_setup_int_1(int cpu, u64 expires) { u64 val; @@ -133,7 +135,7 @@ static void inline mmtimer_setup_int_1(u64 expires) mmtimer_clr_int_pending(1); val = ((u64)SGI_MMTIMER_VECTOR << SH_RTC2_INT_CONFIG_IDX_SHFT) | - ((u64)cpu_physical_id(smp_processor_id()) << + ((u64)cpu_physical_id(cpu) << SH_RTC2_INT_CONFIG_PID_SHFT); HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC2_INT_CONFIG), val); @@ -144,7 +146,7 @@ static void inline mmtimer_setup_int_1(u64 expires) } /* Setup timer on comparator RTC3 */ -static void inline mmtimer_setup_int_2(u64 expires) +static void mmtimer_setup_int_2(int cpu, u64 expires) { u64 val; @@ -155,7 +157,7 @@ static void inline mmtimer_setup_int_2(u64 expires) mmtimer_clr_int_pending(2); val = ((u64)SGI_MMTIMER_VECTOR << SH_RTC3_INT_CONFIG_IDX_SHFT) | - ((u64)cpu_physical_id(smp_processor_id()) << + ((u64)cpu_physical_id(cpu) << SH_RTC3_INT_CONFIG_PID_SHFT); HUB_S((u64 *)LOCAL_MMR_ADDR(SH_RTC3_INT_CONFIG), val); @@ -170,22 +172,22 @@ static void inline mmtimer_setup_int_2(u64 expires) * in order to insure that the setup succeeds in a deterministic time frame. * It will check if the interrupt setup succeeded. */ -static int inline mmtimer_setup(int comparator, unsigned long expires) +static int mmtimer_setup(int cpu, int comparator, unsigned long expires) { switch (comparator) { case 0: - mmtimer_setup_int_0(expires); + mmtimer_setup_int_0(cpu, expires); break; case 1: - mmtimer_setup_int_1(expires); + mmtimer_setup_int_1(cpu, expires); break; case 2: - mmtimer_setup_int_2(expires); + mmtimer_setup_int_2(cpu, expires); break; } /* We might've missed our expiration time */ - if (rtc_time() < expires) + if (rtc_time() <= expires) return 1; /* @@ -195,7 +197,7 @@ static int inline mmtimer_setup(int comparator, unsigned long expires) return mmtimer_int_pending(comparator); } -static int inline mmtimer_disable_int(long nasid, int comparator) +static int mmtimer_disable_int(long nasid, int comparator) { switch (comparator) { case 0: @@ -216,18 +218,124 @@ static int inline mmtimer_disable_int(long nasid, int comparator) return 0; } -#define TIMER_OFF 0xbadcabLL +#define COMPARATOR 1 /* The comparator to use */ -/* There is one of these for each comparator */ -typedef struct mmtimer { - spinlock_t lock ____cacheline_aligned; +#define TIMER_OFF 0xbadcabLL /* Timer is not setup */ +#define TIMER_SET 0 /* Comparator is set for this timer */ + +/* There is one of these for each timer */ +struct mmtimer { + struct rb_node list; struct k_itimer *timer; - int i; int cpu; +}; + +struct mmtimer_node { + spinlock_t lock ____cacheline_aligned; + struct rb_root timer_head; + struct rb_node *next; struct tasklet_struct tasklet; -} mmtimer_t; +}; +static struct mmtimer_node *timers; + + +/* + * Add a new mmtimer struct to the node's mmtimer list. + * This function assumes the struct mmtimer_node is locked. + */ +static void mmtimer_add_list(struct mmtimer *n) +{ + int nodeid = n->timer->it.mmtimer.node; + unsigned long expires = n->timer->it.mmtimer.expires; + struct rb_node **link = &timers[nodeid].timer_head.rb_node; + struct rb_node *parent = NULL; + struct mmtimer *x; + + /* + * Find the right place in the rbtree: + */ + while (*link) { + parent = *link; + x = rb_entry(parent, struct mmtimer, list); + + if (expires < x->timer->it.mmtimer.expires) + link = &(*link)->rb_left; + else + link = &(*link)->rb_right; + } + + /* + * Insert the timer to the rbtree and check whether it + * replaces the first pending timer + */ + rb_link_node(&n->list, parent, link); + rb_insert_color(&n->list, &timers[nodeid].timer_head); + + if (!timers[nodeid].next || expires < rb_entry(timers[nodeid].next, + struct mmtimer, list)->timer->it.mmtimer.expires) + timers[nodeid].next = &n->list; +} + +/* + * Set the comparator for the next timer. + * This function assumes the struct mmtimer_node is locked. + */ +static void mmtimer_set_next_timer(int nodeid) +{ + struct mmtimer_node *n = &timers[nodeid]; + struct mmtimer *x; + struct k_itimer *t; + int o; + +restart: + if (n->next == NULL) + return; -static mmtimer_t ** timers; + x = rb_entry(n->next, struct mmtimer, list); + t = x->timer; + if (!t->it.mmtimer.incr) { + /* Not an interval timer */ + if (!mmtimer_setup(x->cpu, COMPARATOR, + t->it.mmtimer.expires)) { + /* Late setup, fire now */ + tasklet_schedule(&n->tasklet); + } + return; + } + + /* Interval timer */ + o = 0; + while (!mmtimer_setup(x->cpu, COMPARATOR, t->it.mmtimer.expires)) { + unsigned long e, e1; + struct rb_node *next; + t->it.mmtimer.expires += t->it.mmtimer.incr << o; + t->it_overrun += 1 << o; + o++; + if (o > 20) { + printk(KERN_ALERT "mmtimer: cannot reschedule timer\n"); + t->it.mmtimer.clock = TIMER_OFF; + n->next = rb_next(&x->list); + rb_erase(&x->list, &n->timer_head); + kfree(x); + goto restart; + } + + e = t->it.mmtimer.expires; + next = rb_next(&x->list); + + if (next == NULL) + continue; + + e1 = rb_entry(next, struct mmtimer, list)-> + timer->it.mmtimer.expires; + if (e > e1) { + n->next = next; + rb_erase(&x->list, &n->timer_head); + mmtimer_add_list(x); + goto restart; + } + } +} /** * mmtimer_ioctl - ioctl interface for /dev/mmtimer @@ -366,8 +474,8 @@ static int sgi_clock_get(clockid_t clockid, struct timespec *tp) nsec = rtc_time() * sgi_clock_period + sgi_clock_offset.tv_nsec; - tp->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &tp->tv_nsec) - + sgi_clock_offset.tv_sec; + *tp = ns_to_timespec(nsec); + tp->tv_sec += sgi_clock_offset.tv_sec; return 0; }; @@ -375,11 +483,11 @@ static int sgi_clock_set(clockid_t clockid, struct timespec *tp) { u64 nsec; - u64 rem; + u32 rem; nsec = rtc_time() * sgi_clock_period; - sgi_clock_offset.tv_sec = tp->tv_sec - div_long_long_rem(nsec, NSEC_PER_SEC, &rem); + sgi_clock_offset.tv_sec = tp->tv_sec - div_u64_rem(nsec, NSEC_PER_SEC, &rem); if (rem <= tp->tv_nsec) sgi_clock_offset.tv_nsec = tp->tv_sec - rem; @@ -390,35 +498,6 @@ static int sgi_clock_set(clockid_t clockid, struct timespec *tp) return 0; } -/* - * Schedule the next periodic interrupt. This function will attempt - * to schedule a periodic interrupt later if necessary. If the scheduling - * of an interrupt fails then the time to skip is lengthened - * exponentially in order to ensure that the next interrupt - * can be properly scheduled.. - */ -static int inline reschedule_periodic_timer(mmtimer_t *x) -{ - int n; - struct k_itimer *t = x->timer; - - t->it.mmtimer.clock = x->i; - t->it_overrun--; - - n = 0; - do { - - t->it.mmtimer.expires += t->it.mmtimer.incr << n; - t->it_overrun += 1 << n; - n++; - if (n > 20) - return 1; - - } while (!mmtimer_setup(x->i, t->it.mmtimer.expires)); - - return 0; -} - /** * mmtimer_interrupt - timer interrupt handler * @irq: irq received @@ -435,71 +514,75 @@ static int inline reschedule_periodic_timer(mmtimer_t *x) static irqreturn_t mmtimer_interrupt(int irq, void *dev_id) { - int i; unsigned long expires = 0; int result = IRQ_NONE; unsigned indx = cpu_to_node(smp_processor_id()); + struct mmtimer *base; - /* - * Do this once for each comparison register - */ - for (i = 0; i < NUM_COMPARATORS; i++) { - mmtimer_t *base = timers[indx] + i; - /* Make sure this doesn't get reused before tasklet_sched */ - spin_lock(&base->lock); - if (base->cpu == smp_processor_id()) { - if (base->timer) - expires = base->timer->it.mmtimer.expires; - /* expires test won't work with shared irqs */ - if ((mmtimer_int_pending(i) > 0) || - (expires && (expires < rtc_time()))) { - mmtimer_clr_int_pending(i); - tasklet_schedule(&base->tasklet); - result = IRQ_HANDLED; - } + spin_lock(&timers[indx].lock); + base = rb_entry(timers[indx].next, struct mmtimer, list); + if (base == NULL) { + spin_unlock(&timers[indx].lock); + return result; + } + + if (base->cpu == smp_processor_id()) { + if (base->timer) + expires = base->timer->it.mmtimer.expires; + /* expires test won't work with shared irqs */ + if ((mmtimer_int_pending(COMPARATOR) > 0) || + (expires && (expires <= rtc_time()))) { + mmtimer_clr_int_pending(COMPARATOR); + tasklet_schedule(&timers[indx].tasklet); + result = IRQ_HANDLED; } - spin_unlock(&base->lock); - expires = 0; } + spin_unlock(&timers[indx].lock); return result; } -void mmtimer_tasklet(unsigned long data) { - mmtimer_t *x = (mmtimer_t *)data; - struct k_itimer *t = x->timer; +static void mmtimer_tasklet(unsigned long data) +{ + int nodeid = data; + struct mmtimer_node *mn = &timers[nodeid]; + struct mmtimer *x = rb_entry(mn->next, struct mmtimer, list); + struct k_itimer *t; unsigned long flags; - if (t == NULL) - return; - /* Send signal and deal with periodic signals */ - spin_lock_irqsave(&t->it_lock, flags); - spin_lock(&x->lock); - /* If timer was deleted between interrupt and here, leave */ - if (t != x->timer) + spin_lock_irqsave(&mn->lock, flags); + if (!mn->next) goto out; - t->it_overrun = 0; - if (posix_timer_event(t, 0) != 0) { + x = rb_entry(mn->next, struct mmtimer, list); + t = x->timer; + + if (t->it.mmtimer.clock == TIMER_OFF) + goto out; + + t->it_overrun = 0; - // printk(KERN_WARNING "mmtimer: cannot deliver signal.\n"); + mn->next = rb_next(&x->list); + rb_erase(&x->list, &mn->timer_head); + if (posix_timer_event(t, 0) != 0) t->it_overrun++; - } + if(t->it.mmtimer.incr) { - /* Periodic timer */ - if (reschedule_periodic_timer(x)) { - printk(KERN_WARNING "mmtimer: unable to reschedule\n"); - x->timer = NULL; - } + t->it.mmtimer.expires += t->it.mmtimer.incr; + mmtimer_add_list(x); } else { /* Ensure we don't false trigger in mmtimer_interrupt */ + t->it.mmtimer.clock = TIMER_OFF; t->it.mmtimer.expires = 0; + kfree(x); } + /* Set comparator for next timer, if there is one */ + mmtimer_set_next_timer(nodeid); + t->it_overrun_last = t->it_overrun; out: - spin_unlock(&x->lock); - spin_unlock_irqrestore(&t->it_lock, flags); + spin_unlock_irqrestore(&mn->lock, flags); } static int sgi_timer_create(struct k_itimer *timer) @@ -516,25 +599,53 @@ static int sgi_timer_create(struct k_itimer *timer) */ static int sgi_timer_del(struct k_itimer *timr) { - int i = timr->it.mmtimer.clock; cnodeid_t nodeid = timr->it.mmtimer.node; - mmtimer_t *t = timers[nodeid] + i; unsigned long irqflags; - if (i != TIMER_OFF) { - spin_lock_irqsave(&t->lock, irqflags); - mmtimer_disable_int(cnodeid_to_nasid(nodeid),i); - t->timer = NULL; + spin_lock_irqsave(&timers[nodeid].lock, irqflags); + if (timr->it.mmtimer.clock != TIMER_OFF) { + unsigned long expires = timr->it.mmtimer.expires; + struct rb_node *n = timers[nodeid].timer_head.rb_node; + struct mmtimer *uninitialized_var(t); + int r = 0; + timr->it.mmtimer.clock = TIMER_OFF; timr->it.mmtimer.expires = 0; - spin_unlock_irqrestore(&t->lock, irqflags); + + while (n) { + t = rb_entry(n, struct mmtimer, list); + if (t->timer == timr) + break; + + if (expires < t->timer->it.mmtimer.expires) + n = n->rb_left; + else + n = n->rb_right; + } + + if (!n) { + spin_unlock_irqrestore(&timers[nodeid].lock, irqflags); + return 0; + } + + if (timers[nodeid].next == n) { + timers[nodeid].next = rb_next(n); + r = 1; + } + + rb_erase(n, &timers[nodeid].timer_head); + kfree(t); + + if (r) { + mmtimer_disable_int(cnodeid_to_nasid(nodeid), + COMPARATOR); + mmtimer_set_next_timer(nodeid); + } } + spin_unlock_irqrestore(&timers[nodeid].lock, irqflags); return 0; } -#define timespec_to_ns(x) ((x).tv_nsec + (x).tv_sec * NSEC_PER_SEC) -#define ns_to_timespec(ts, nsec) (ts).tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &(ts).tv_nsec) - /* Assumption: it_lock is already held with irq's disabled */ static void sgi_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting) { @@ -547,9 +658,8 @@ static void sgi_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting) return; } - ns_to_timespec(cur_setting->it_interval, timr->it.mmtimer.incr * sgi_clock_period); - ns_to_timespec(cur_setting->it_value, (timr->it.mmtimer.expires - rtc_time())* sgi_clock_period); - return; + cur_setting->it_interval = ns_to_timespec(timr->it.mmtimer.incr * sgi_clock_period); + cur_setting->it_value = ns_to_timespec((timr->it.mmtimer.expires - rtc_time()) * sgi_clock_period); } @@ -557,30 +667,33 @@ static int sgi_timer_set(struct k_itimer *timr, int flags, struct itimerspec * new_setting, struct itimerspec * old_setting) { - - int i; unsigned long when, period, irqflags; int err = 0; cnodeid_t nodeid; - mmtimer_t *base; + struct mmtimer *base; + struct rb_node *n; if (old_setting) sgi_timer_get(timr, old_setting); sgi_timer_del(timr); - when = timespec_to_ns(new_setting->it_value); - period = timespec_to_ns(new_setting->it_interval); + when = timespec_to_ns(&new_setting->it_value); + period = timespec_to_ns(&new_setting->it_interval); if (when == 0) /* Clear timer */ return 0; + base = kmalloc(sizeof(struct mmtimer), GFP_KERNEL); + if (base == NULL) + return -ENOMEM; + if (flags & TIMER_ABSTIME) { struct timespec n; unsigned long now; getnstimeofday(&n); - now = timespec_to_ns(n); + now = timespec_to_ns(&n); if (when > now) when -= now; else @@ -604,47 +717,38 @@ static int sgi_timer_set(struct k_itimer *timr, int flags, preempt_disable(); nodeid = cpu_to_node(smp_processor_id()); -retry: - /* Don't use an allocated timer, or a deleted one that's pending */ - for(i = 0; i< NUM_COMPARATORS; i++) { - base = timers[nodeid] + i; - if (!base->timer && !base->tasklet.state) { - break; - } - } - - if (i == NUM_COMPARATORS) { - preempt_enable(); - return -EBUSY; - } - spin_lock_irqsave(&base->lock, irqflags); + /* Lock the node timer structure */ + spin_lock_irqsave(&timers[nodeid].lock, irqflags); - if (base->timer || base->tasklet.state != 0) { - spin_unlock_irqrestore(&base->lock, irqflags); - goto retry; - } base->timer = timr; base->cpu = smp_processor_id(); - timr->it.mmtimer.clock = i; + timr->it.mmtimer.clock = TIMER_SET; timr->it.mmtimer.node = nodeid; timr->it.mmtimer.incr = period; timr->it.mmtimer.expires = when; - if (period == 0) { - if (!mmtimer_setup(i, when)) { - mmtimer_disable_int(-1, i); - posix_timer_event(timr, 0); - timr->it.mmtimer.expires = 0; - } - } else { - timr->it.mmtimer.expires -= period; - if (reschedule_periodic_timer(base)) - err = -EINVAL; + n = timers[nodeid].next; + + /* Add the new struct mmtimer to node's timer list */ + mmtimer_add_list(base); + + if (timers[nodeid].next == n) { + /* No need to reprogram comparator for now */ + spin_unlock_irqrestore(&timers[nodeid].lock, irqflags); + preempt_enable(); + return err; } - spin_unlock_irqrestore(&base->lock, irqflags); + /* We need to reprogram the comparator */ + if (n) + mmtimer_disable_int(cnodeid_to_nasid(nodeid), COMPARATOR); + + mmtimer_set_next_timer(nodeid); + + /* Unlock the node timer structure */ + spin_unlock_irqrestore(&timers[nodeid].lock, irqflags); preempt_enable(); @@ -669,7 +773,6 @@ static struct k_clock sgi_clock = { */ static int __init mmtimer_init(void) { - unsigned i; cnodeid_t node, maxn = -1; if (!ia64_platform_is("sn2")) @@ -706,31 +809,18 @@ static int __init mmtimer_init(void) maxn++; /* Allocate list of node ptrs to mmtimer_t's */ - timers = kzalloc(sizeof(mmtimer_t *)*maxn, GFP_KERNEL); + timers = kzalloc(sizeof(struct mmtimer_node)*maxn, GFP_KERNEL); if (timers == NULL) { printk(KERN_ERR "%s: failed to allocate memory for device\n", MMTIMER_NAME); goto out3; } - /* Allocate mmtimer_t's for each online node */ + /* Initialize struct mmtimer's for each online node */ for_each_online_node(node) { - timers[node] = kmalloc_node(sizeof(mmtimer_t)*NUM_COMPARATORS, GFP_KERNEL, node); - if (timers[node] == NULL) { - printk(KERN_ERR "%s: failed to allocate memory for device\n", - MMTIMER_NAME); - goto out4; - } - for (i=0; i< NUM_COMPARATORS; i++) { - mmtimer_t * base = timers[node] + i; - - spin_lock_init(&base->lock); - base->timer = NULL; - base->cpu = 0; - base->i = i; - tasklet_init(&base->tasklet, mmtimer_tasklet, - (unsigned long) (base)); - } + spin_lock_init(&timers[node].lock); + tasklet_init(&timers[node].tasklet, mmtimer_tasklet, + (unsigned long) node); } sgi_clock_period = sgi_clock.res = NSEC_PER_SEC / sn_rtc_cycles_per_second; @@ -741,11 +831,8 @@ static int __init mmtimer_init(void) return 0; -out4: - for_each_online_node(node) { - kfree(timers[node]); - } out3: + kfree(timers); misc_deregister(&mmtimer_miscdev); out2: free_irq(SGI_MMTIMER_VECTOR, NULL); @@ -754,4 +841,3 @@ out1: } module_init(mmtimer_init); - diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c index 64b7b2b1835..d57d3a61919 100644 --- a/drivers/char/moxa.c +++ b/drivers/char/moxa.c @@ -2,7 +2,8 @@ /* * moxa.c -- MOXA Intellio family multiport serial driver. * - * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw). + * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com). + * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> * * This code is loosely based on the Linux serial driver, written by * Linus Torvalds, Theodore T'so and others. @@ -25,6 +26,7 @@ #include <linux/mm.h> #include <linux/ioport.h> #include <linux/errno.h> +#include <linux/firmware.h> #include <linux/signal.h> #include <linux/sched.h> #include <linux/timer.h> @@ -41,21 +43,26 @@ #include <linux/pci.h> #include <linux/init.h> #include <linux/bitops.h> -#include <linux/completion.h> #include <asm/system.h> #include <asm/io.h> #include <asm/uaccess.h> -#define MOXA_VERSION "5.1k" +#include "moxa.h" + +#define MOXA_VERSION "6.0k" + +#define MOXA_FW_HDRLEN 32 #define MOXAMAJOR 172 -#define MOXACUMAJOR 173 #define MAX_BOARDS 4 /* Don't change this value */ #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) +#define MOXA_IS_320(brd) ((brd)->boardType == MOXA_BOARD_C320_ISA || \ + (brd)->boardType == MOXA_BOARD_C320_PCI) + /* * Define the Moxa PCI vendor and device IDs. */ @@ -92,24 +99,16 @@ static struct pci_device_id moxa_pcibrds[] = { MODULE_DEVICE_TABLE(pci, moxa_pcibrds); #endif /* CONFIG_PCI */ -struct moxa_isa_board_conf { - int boardType; - int numPorts; - unsigned long baseAddr; -}; - -static struct moxa_isa_board_conf moxa_isa_boards[] = -{ -/* {MOXA_BOARD_C218_ISA,8,0xDC000}, */ -}; +struct moxa_port; static struct moxa_board_conf { int boardType; int numPorts; - unsigned long baseAddr; int busType; - int loadstat; + unsigned int ready; + + struct moxa_port *ports; void __iomem *basemem; void __iomem *intNdx; @@ -131,30 +130,27 @@ struct moxaq_str { }; struct moxa_port { + struct moxa_board_conf *board; + struct tty_struct *tty; + void __iomem *tableAddr; + int type; - int port; int close_delay; - unsigned short closing_wait; - int count; - int blocked_open; - long event; /* long req'd for set_bit --RR */ + unsigned int count; int asyncflags; - unsigned long statusflags; - struct tty_struct *tty; int cflag; + unsigned long statusflags; wait_queue_head_t open_wait; - struct completion close_wait; - - struct timer_list emptyTimer; - char chkPort; - char lineCtrl; - void __iomem *tableAddr; - long curBaud; - char DCDState; - char lowChkFlag; + u8 DCDState; + u8 lineCtrl; + u8 lowChkFlag; +}; - ushort breakCnt; +struct mon_str { + int tick; + int rxcnt[MAX_PORTS]; + int txcnt[MAX_PORTS]; }; /* statusflags */ @@ -168,20 +164,27 @@ struct moxa_port { #define WAKEUP_CHARS 256 static int ttymajor = MOXAMAJOR; +static struct mon_str moxaLog; +static unsigned int moxaFuncTout = HZ / 2; +static unsigned int moxaLowWaterChk; +static DEFINE_MUTEX(moxa_openlock); /* Variables for insmod */ #ifdef MODULE -static int baseaddr[4]; -static int type[4]; -static int numports[4]; +static unsigned long baseaddr[MAX_BOARDS]; +static unsigned int type[MAX_BOARDS]; +static unsigned int numports[MAX_BOARDS]; #endif MODULE_AUTHOR("William Chen"); MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); MODULE_LICENSE("GPL"); #ifdef MODULE -module_param_array(type, int, NULL, 0); -module_param_array(baseaddr, int, NULL, 0); -module_param_array(numports, int, NULL, 0); +module_param_array(type, uint, NULL, 0); +MODULE_PARM_DESC(type, "card type: C218=2, C320=4"); +module_param_array(baseaddr, ulong, NULL, 0); +MODULE_PARM_DESC(baseaddr, "base address"); +module_param_array(numports, uint, NULL, 0); +MODULE_PARM_DESC(numports, "numports (ignored for C218)"); #endif module_param(ttymajor, int, 0); @@ -194,9 +197,6 @@ static int moxa_write(struct tty_struct *, const unsigned char *, int); static int moxa_write_room(struct tty_struct *); static void moxa_flush_buffer(struct tty_struct *); static int moxa_chars_in_buffer(struct tty_struct *); -static void moxa_flush_chars(struct tty_struct *); -static void moxa_put_char(struct tty_struct *, unsigned char); -static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long); static void moxa_throttle(struct tty_struct *); static void moxa_unthrottle(struct tty_struct *); static void moxa_set_termios(struct tty_struct *, struct ktermios *); @@ -208,44 +208,183 @@ static int moxa_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static void moxa_poll(unsigned long); static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); -static int moxa_block_till_ready(struct tty_struct *, struct file *, - struct moxa_port *); static void moxa_setup_empty_event(struct tty_struct *); -static void moxa_check_xmit_empty(unsigned long); static void moxa_shut_down(struct moxa_port *); -static void moxa_receive_data(struct moxa_port *); /* * moxa board interface functions: */ -static void MoxaDriverInit(void); -static int MoxaDriverIoctl(unsigned int, unsigned long, int); -static int MoxaDriverPoll(void); -static int MoxaPortsOfCard(int); -static int MoxaPortIsValid(int); -static void MoxaPortEnable(int); -static void MoxaPortDisable(int); -static long MoxaPortGetMaxBaud(int); -static long MoxaPortSetBaud(int, long); -static int MoxaPortSetTermio(int, struct ktermios *, speed_t); -static int MoxaPortGetLineOut(int, int *, int *); -static void MoxaPortLineCtrl(int, int, int); -static void MoxaPortFlowCtrl(int, int, int, int, int, int); -static int MoxaPortLineStatus(int); -static int MoxaPortDCDChange(int); -static int MoxaPortDCDON(int); -static void MoxaPortFlushData(int, int); -static int MoxaPortWriteData(int, unsigned char *, int); -static int MoxaPortReadData(int, struct tty_struct *tty); -static int MoxaPortTxQueue(int); -static int MoxaPortRxQueue(int); -static int MoxaPortTxFree(int); -static void MoxaPortTxDisable(int); -static void MoxaPortTxEnable(int); -static int MoxaPortResetBrkCnt(int); -static void MoxaPortSendBreak(int, int); +static void MoxaPortEnable(struct moxa_port *); +static void MoxaPortDisable(struct moxa_port *); +static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); +static int MoxaPortGetLineOut(struct moxa_port *, int *, int *); +static void MoxaPortLineCtrl(struct moxa_port *, int, int); +static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); +static int MoxaPortLineStatus(struct moxa_port *); +static void MoxaPortFlushData(struct moxa_port *, int); +static int MoxaPortWriteData(struct moxa_port *, const unsigned char *, int); +static int MoxaPortReadData(struct moxa_port *); +static int MoxaPortTxQueue(struct moxa_port *); +static int MoxaPortRxQueue(struct moxa_port *); +static int MoxaPortTxFree(struct moxa_port *); +static void MoxaPortTxDisable(struct moxa_port *); +static void MoxaPortTxEnable(struct moxa_port *); static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); -static void MoxaSetFifo(int port, int enable); +static void MoxaSetFifo(struct moxa_port *port, int enable); + +/* + * I/O functions + */ + +static void moxa_wait_finish(void __iomem *ofsAddr) +{ + unsigned long end = jiffies + moxaFuncTout; + + while (readw(ofsAddr + FuncCode) != 0) + if (time_after(jiffies, end)) + return; + if (readw(ofsAddr + FuncCode) != 0 && printk_ratelimit()) + printk(KERN_WARNING "moxa function expired\n"); +} + +static void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) +{ + writew(arg, ofsAddr + FuncArg); + writew(cmd, ofsAddr + FuncCode); + moxa_wait_finish(ofsAddr); +} + +static void moxa_low_water_check(void __iomem *ofsAddr) +{ + u16 rptr, wptr, mask, len; + + if (readb(ofsAddr + FlagStat) & Xoff_state) { + rptr = readw(ofsAddr + RXrptr); + wptr = readw(ofsAddr + RXwptr); + mask = readw(ofsAddr + RX_mask); + len = (wptr - rptr) & mask; + if (len <= Low_water) + moxafunc(ofsAddr, FC_SendXon, 0); + } +} + +/* + * TTY operations + */ + +static int moxa_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct moxa_port *ch = tty->driver_data; + void __user *argp = (void __user *)arg; + int status, ret = 0; + + if (tty->index == MAX_PORTS) { + if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && + cmd != MOXA_GETMSTATUS) + return -EINVAL; + } else if (!ch) + return -ENODEV; + + switch (cmd) { + case MOXA_GETDATACOUNT: + moxaLog.tick = jiffies; + if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) + ret = -EFAULT; + break; + case MOXA_FLUSH_QUEUE: + MoxaPortFlushData(ch, arg); + break; + case MOXA_GET_IOQUEUE: { + struct moxaq_str __user *argm = argp; + struct moxaq_str tmp; + struct moxa_port *p; + unsigned int i, j; + + mutex_lock(&moxa_openlock); + for (i = 0; i < MAX_BOARDS; i++) { + p = moxa_boards[i].ports; + for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { + memset(&tmp, 0, sizeof(tmp)); + if (moxa_boards[i].ready) { + tmp.inq = MoxaPortRxQueue(p); + tmp.outq = MoxaPortTxQueue(p); + } + if (copy_to_user(argm, &tmp, sizeof(tmp))) { + mutex_unlock(&moxa_openlock); + return -EFAULT; + } + } + } + mutex_unlock(&moxa_openlock); + break; + } case MOXA_GET_OQUEUE: + status = MoxaPortTxQueue(ch); + ret = put_user(status, (unsigned long __user *)argp); + break; + case MOXA_GET_IQUEUE: + status = MoxaPortRxQueue(ch); + ret = put_user(status, (unsigned long __user *)argp); + break; + case MOXA_GETMSTATUS: { + struct mxser_mstatus __user *argm = argp; + struct mxser_mstatus tmp; + struct moxa_port *p; + unsigned int i, j; + + mutex_lock(&moxa_openlock); + for (i = 0; i < MAX_BOARDS; i++) { + p = moxa_boards[i].ports; + for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { + memset(&tmp, 0, sizeof(tmp)); + if (!moxa_boards[i].ready) + goto copy; + + status = MoxaPortLineStatus(p); + if (status & 1) + tmp.cts = 1; + if (status & 2) + tmp.dsr = 1; + if (status & 4) + tmp.dcd = 1; + + if (!p->tty || !p->tty->termios) + tmp.cflag = p->cflag; + else + tmp.cflag = p->tty->termios->c_cflag; +copy: + if (copy_to_user(argm, &tmp, sizeof(tmp))) { + mutex_unlock(&moxa_openlock); + return -EFAULT; + } + } + } + mutex_unlock(&moxa_openlock); + break; + } + case TIOCGSERIAL: + mutex_lock(&moxa_openlock); + ret = moxa_get_serial_info(ch, argp); + mutex_unlock(&moxa_openlock); + break; + case TIOCSSERIAL: + mutex_lock(&moxa_openlock); + ret = moxa_set_serial_info(ch, argp); + mutex_unlock(&moxa_openlock); + break; + default: + ret = -ENOIOCTLCMD; + } + return ret; +} + +static void moxa_break_ctl(struct tty_struct *tty, int state) +{ + struct moxa_port *port = tty->driver_data; + + moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, + Magic_code); +} static const struct tty_operations moxa_ops = { .open = moxa_open, @@ -254,8 +393,6 @@ static const struct tty_operations moxa_ops = { .write_room = moxa_write_room, .flush_buffer = moxa_flush_buffer, .chars_in_buffer = moxa_chars_in_buffer, - .flush_chars = moxa_flush_chars, - .put_char = moxa_put_char, .ioctl = moxa_ioctl, .throttle = moxa_throttle, .unthrottle = moxa_unthrottle, @@ -263,15 +400,509 @@ static const struct tty_operations moxa_ops = { .stop = moxa_stop, .start = moxa_start, .hangup = moxa_hangup, + .break_ctl = moxa_break_ctl, .tiocmget = moxa_tiocmget, .tiocmset = moxa_tiocmset, }; static struct tty_driver *moxaDriver; -static struct moxa_port moxa_ports[MAX_PORTS]; static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); static DEFINE_SPINLOCK(moxa_lock); +/* + * HW init + */ + +static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) +{ + switch (brd->boardType) { + case MOXA_BOARD_C218_ISA: + case MOXA_BOARD_C218_PCI: + if (model != 1) + goto err; + break; + case MOXA_BOARD_CP204J: + if (model != 3) + goto err; + break; + default: + if (model != 2) + goto err; + break; + } + return 0; +err: + return -EINVAL; +} + +static int moxa_check_fw(const void *ptr) +{ + const __le16 *lptr = ptr; + + if (*lptr != cpu_to_le16(0x7980)) + return -EINVAL; + + return 0; +} + +static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, + size_t len) +{ + void __iomem *baseAddr = brd->basemem; + u16 tmp; + + writeb(HW_reset, baseAddr + Control_reg); /* reset */ + msleep(10); + memset_io(baseAddr, 0, 4096); + memcpy_toio(baseAddr, buf, len); /* download BIOS */ + writeb(0, baseAddr + Control_reg); /* restart */ + + msleep(2000); + + switch (brd->boardType) { + case MOXA_BOARD_C218_ISA: + case MOXA_BOARD_C218_PCI: + tmp = readw(baseAddr + C218_key); + if (tmp != C218_KeyCode) + goto err; + break; + case MOXA_BOARD_CP204J: + tmp = readw(baseAddr + C218_key); + if (tmp != CP204J_KeyCode) + goto err; + break; + default: + tmp = readw(baseAddr + C320_key); + if (tmp != C320_KeyCode) + goto err; + tmp = readw(baseAddr + C320_status); + if (tmp != STS_init) { + printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " + "module not found\n"); + return -EIO; + } + break; + } + + return 0; +err: + printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); + return -EIO; +} + +static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, + size_t len) +{ + void __iomem *baseAddr = brd->basemem; + + if (len < 7168) { + printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); + return -EINVAL; + } + + writew(len - 7168 - 2, baseAddr + C320bapi_len); + writeb(1, baseAddr + Control_reg); /* Select Page 1 */ + memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); + writeb(2, baseAddr + Control_reg); /* Select Page 2 */ + memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); + + return 0; +} + +static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, + size_t len) +{ + void __iomem *baseAddr = brd->basemem; + const u16 *uptr = ptr; + size_t wlen, len2, j; + unsigned long key, loadbuf, loadlen, checksum, checksum_ok; + unsigned int i, retry; + u16 usum, keycode; + + keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : + C218_KeyCode; + + switch (brd->boardType) { + case MOXA_BOARD_CP204J: + case MOXA_BOARD_C218_ISA: + case MOXA_BOARD_C218_PCI: + key = C218_key; + loadbuf = C218_LoadBuf; + loadlen = C218DLoad_len; + checksum = C218check_sum; + checksum_ok = C218chksum_ok; + break; + default: + key = C320_key; + keycode = C320_KeyCode; + loadbuf = C320_LoadBuf; + loadlen = C320DLoad_len; + checksum = C320check_sum; + checksum_ok = C320chksum_ok; + break; + } + + usum = 0; + wlen = len >> 1; + for (i = 0; i < wlen; i++) + usum += le16_to_cpu(uptr[i]); + retry = 0; + do { + wlen = len >> 1; + j = 0; + while (wlen) { + len2 = (wlen > 2048) ? 2048 : wlen; + wlen -= len2; + memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); + j += len2 << 1; + + writew(len2, baseAddr + loadlen); + writew(0, baseAddr + key); + for (i = 0; i < 100; i++) { + if (readw(baseAddr + key) == keycode) + break; + msleep(10); + } + if (readw(baseAddr + key) != keycode) + return -EIO; + } + writew(0, baseAddr + loadlen); + writew(usum, baseAddr + checksum); + writew(0, baseAddr + key); + for (i = 0; i < 100; i++) { + if (readw(baseAddr + key) == keycode) + break; + msleep(10); + } + retry++; + } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); + if (readb(baseAddr + checksum_ok) != 1) + return -EIO; + + writew(0, baseAddr + key); + for (i = 0; i < 600; i++) { + if (readw(baseAddr + Magic_no) == Magic_code) + break; + msleep(10); + } + if (readw(baseAddr + Magic_no) != Magic_code) + return -EIO; + + if (MOXA_IS_320(brd)) { + if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ + writew(0x3800, baseAddr + TMS320_PORT1); + writew(0x3900, baseAddr + TMS320_PORT2); + writew(28499, baseAddr + TMS320_CLOCK); + } else { + writew(0x3200, baseAddr + TMS320_PORT1); + writew(0x3400, baseAddr + TMS320_PORT2); + writew(19999, baseAddr + TMS320_CLOCK); + } + } + writew(1, baseAddr + Disable_IRQ); + writew(0, baseAddr + Magic_no); + for (i = 0; i < 500; i++) { + if (readw(baseAddr + Magic_no) == Magic_code) + break; + msleep(10); + } + if (readw(baseAddr + Magic_no) != Magic_code) + return -EIO; + + if (MOXA_IS_320(brd)) { + j = readw(baseAddr + Module_cnt); + if (j <= 0) + return -EIO; + brd->numPorts = j * 8; + writew(j, baseAddr + Module_no); + writew(0, baseAddr + Magic_no); + for (i = 0; i < 600; i++) { + if (readw(baseAddr + Magic_no) == Magic_code) + break; + msleep(10); + } + if (readw(baseAddr + Magic_no) != Magic_code) + return -EIO; + } + brd->intNdx = baseAddr + IRQindex; + brd->intPend = baseAddr + IRQpending; + brd->intTable = baseAddr + IRQtable; + + return 0; +} + +static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, + size_t len) +{ + void __iomem *ofsAddr, *baseAddr = brd->basemem; + struct moxa_port *port; + int retval, i; + + if (len % 2) { + printk(KERN_ERR "MOXA: bios length is not even\n"); + return -EINVAL; + } + + retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ + if (retval) + return retval; + + switch (brd->boardType) { + case MOXA_BOARD_C218_ISA: + case MOXA_BOARD_C218_PCI: + case MOXA_BOARD_CP204J: + port = brd->ports; + for (i = 0; i < brd->numPorts; i++, port++) { + port->board = brd; + port->DCDState = 0; + port->tableAddr = baseAddr + Extern_table + + Extern_size * i; + ofsAddr = port->tableAddr; + writew(C218rx_mask, ofsAddr + RX_mask); + writew(C218tx_mask, ofsAddr + TX_mask); + writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); + writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); + + writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); + writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); + + } + break; + default: + port = brd->ports; + for (i = 0; i < brd->numPorts; i++, port++) { + port->board = brd; + port->DCDState = 0; + port->tableAddr = baseAddr + Extern_table + + Extern_size * i; + ofsAddr = port->tableAddr; + switch (brd->numPorts) { + case 8: + writew(C320p8rx_mask, ofsAddr + RX_mask); + writew(C320p8tx_mask, ofsAddr + TX_mask); + writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); + writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); + writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); + writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); + + break; + case 16: + writew(C320p16rx_mask, ofsAddr + RX_mask); + writew(C320p16tx_mask, ofsAddr + TX_mask); + writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); + writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); + writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); + writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); + break; + + case 24: + writew(C320p24rx_mask, ofsAddr + RX_mask); + writew(C320p24tx_mask, ofsAddr + TX_mask); + writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); + writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); + writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); + writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); + break; + case 32: + writew(C320p32rx_mask, ofsAddr + RX_mask); + writew(C320p32tx_mask, ofsAddr + TX_mask); + writew(C320p32tx_ofs, ofsAddr + Ofs_txb); + writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); + writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); + writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); + writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); + break; + } + } + break; + } + return 0; +} + +static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) +{ + void *ptr = fw->data; + char rsn[64]; + u16 lens[5]; + size_t len; + unsigned int a, lenp, lencnt; + int ret = -EINVAL; + struct { + __le32 magic; /* 0x34303430 */ + u8 reserved1[2]; + u8 type; /* UNIX = 3 */ + u8 model; /* C218T=1, C320T=2, CP204=3 */ + u8 reserved2[8]; + __le16 len[5]; + } *hdr = ptr; + + BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); + + if (fw->size < MOXA_FW_HDRLEN) { + strcpy(rsn, "too short (even header won't fit)"); + goto err; + } + if (hdr->magic != cpu_to_le32(0x30343034)) { + sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); + goto err; + } + if (hdr->type != 3) { + sprintf(rsn, "not for linux, type is %u", hdr->type); + goto err; + } + if (moxa_check_fw_model(brd, hdr->model)) { + sprintf(rsn, "not for this card, model is %u", hdr->model); + goto err; + } + + len = MOXA_FW_HDRLEN; + lencnt = hdr->model == 2 ? 5 : 3; + for (a = 0; a < ARRAY_SIZE(lens); a++) { + lens[a] = le16_to_cpu(hdr->len[a]); + if (lens[a] && len + lens[a] <= fw->size && + moxa_check_fw(&fw->data[len])) + printk(KERN_WARNING "MOXA firmware: unexpected input " + "at offset %u, but going on\n", (u32)len); + if (!lens[a] && a < lencnt) { + sprintf(rsn, "too few entries in fw file"); + goto err; + } + len += lens[a]; + } + + if (len != fw->size) { + sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, + (u32)len); + goto err; + } + + ptr += MOXA_FW_HDRLEN; + lenp = 0; /* bios */ + + strcpy(rsn, "read above"); + + ret = moxa_load_bios(brd, ptr, lens[lenp]); + if (ret) + goto err; + + /* we skip the tty section (lens[1]), since we don't need it */ + ptr += lens[lenp] + lens[lenp + 1]; + lenp += 2; /* comm */ + + if (hdr->model == 2) { + ret = moxa_load_320b(brd, ptr, lens[lenp]); + if (ret) + goto err; + /* skip another tty */ + ptr += lens[lenp] + lens[lenp + 1]; + lenp += 2; + } + + ret = moxa_load_code(brd, ptr, lens[lenp]); + if (ret) + goto err; + + return 0; +err: + printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); + return ret; +} + +static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) +{ + const struct firmware *fw; + const char *file; + struct moxa_port *p; + unsigned int i; + int ret; + + brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), + GFP_KERNEL); + if (brd->ports == NULL) { + printk(KERN_ERR "cannot allocate memory for ports\n"); + ret = -ENOMEM; + goto err; + } + + for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { + p->type = PORT_16550A; + p->close_delay = 5 * HZ / 10; + p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; + init_waitqueue_head(&p->open_wait); + } + + switch (brd->boardType) { + case MOXA_BOARD_C218_ISA: + case MOXA_BOARD_C218_PCI: + file = "c218tunx.cod"; + break; + case MOXA_BOARD_CP204J: + file = "cp204unx.cod"; + break; + default: + file = "c320tunx.cod"; + break; + } + + ret = request_firmware(&fw, file, dev); + if (ret) { + printk(KERN_ERR "MOXA: request_firmware failed. Make sure " + "you've placed '%s' file into your firmware " + "loader directory (e.g. /lib/firmware)\n", + file); + goto err_free; + } + + ret = moxa_load_fw(brd, fw); + + release_firmware(fw); + + if (ret) + goto err_free; + + spin_lock_bh(&moxa_lock); + brd->ready = 1; + if (!timer_pending(&moxaTimer)) + mod_timer(&moxaTimer, jiffies + HZ / 50); + spin_unlock_bh(&moxa_lock); + + return 0; +err_free: + kfree(brd->ports); +err: + return ret; +} + +static void moxa_board_deinit(struct moxa_board_conf *brd) +{ + unsigned int a, opened; + + mutex_lock(&moxa_openlock); + spin_lock_bh(&moxa_lock); + brd->ready = 0; + spin_unlock_bh(&moxa_lock); + + /* pci hot-un-plug support */ + for (a = 0; a < brd->numPorts; a++) + if (brd->ports[a].asyncflags & ASYNC_INITIALIZED) + tty_hangup(brd->ports[a].tty); + while (1) { + opened = 0; + for (a = 0; a < brd->numPorts; a++) + if (brd->ports[a].asyncflags & ASYNC_INITIALIZED) + opened++; + mutex_unlock(&moxa_openlock); + if (!opened) + break; + msleep(50); + mutex_lock(&moxa_openlock); + } + + iounmap(brd->basemem); + brd->basemem = NULL; + kfree(brd->ports); +} + #ifdef CONFIG_PCI static int __devinit moxa_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) @@ -299,10 +930,17 @@ static int __devinit moxa_pci_probe(struct pci_dev *pdev, } board = &moxa_boards[i]; - board->basemem = pci_iomap(pdev, 2, 0x4000); + + retval = pci_request_region(pdev, 2, "moxa-base"); + if (retval) { + dev_err(&pdev->dev, "can't request pci region 2\n"); + goto err; + } + + board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000); if (board->basemem == NULL) { dev_err(&pdev->dev, "can't remap io space 2\n"); - goto err; + goto err_reg; } board->boardType = board_type; @@ -321,9 +959,21 @@ static int __devinit moxa_pci_probe(struct pci_dev *pdev, } board->busType = MOXA_BUS_TYPE_PCI; + retval = moxa_init_board(board, &pdev->dev); + if (retval) + goto err_base; + pci_set_drvdata(pdev, board); - return (0); + dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", + moxa_brdname[board_type - 1], board->numPorts); + + return 0; +err_base: + iounmap(board->basemem); + board->basemem = NULL; +err_reg: + pci_release_region(pdev, 2); err: return retval; } @@ -332,8 +982,9 @@ static void __devexit moxa_pci_remove(struct pci_dev *pdev) { struct moxa_board_conf *brd = pci_get_drvdata(pdev); - pci_iounmap(pdev, brd->basemem); - brd->basemem = NULL; + moxa_board_deinit(brd); + + pci_release_region(pdev, 2); } static struct pci_driver moxa_pci_driver = { @@ -346,8 +997,8 @@ static struct pci_driver moxa_pci_driver = { static int __init moxa_init(void) { - int i, numBoards, retval = 0; - struct moxa_port *ch; + unsigned int isabrds = 0; + int retval = 0; printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION); @@ -368,154 +1019,176 @@ static int __init moxa_init(void) moxaDriver->flags = TTY_DRIVER_REAL_RAW; tty_set_operations(moxaDriver, &moxa_ops); - for (i = 0, ch = moxa_ports; i < MAX_PORTS; i++, ch++) { - ch->type = PORT_16550A; - ch->port = i; - ch->close_delay = 5 * HZ / 10; - ch->closing_wait = 30 * HZ; - ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; - init_waitqueue_head(&ch->open_wait); - init_completion(&ch->close_wait); - - setup_timer(&ch->emptyTimer, moxa_check_xmit_empty, - (unsigned long)ch); - } - - pr_debug("Moxa tty devices major number = %d\n", ttymajor); - if (tty_register_driver(moxaDriver)) { - printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n"); + printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); put_tty_driver(moxaDriver); return -1; } - mod_timer(&moxaTimer, jiffies + HZ / 50); - - /* Find the boards defined in source code */ - numBoards = 0; - for (i = 0; i < MAX_BOARDS; i++) { - if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) || - (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) { - moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType; - if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) - moxa_boards[numBoards].numPorts = 8; - else - moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts; - moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA; - moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr; - pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", - numBoards + 1, - moxa_brdname[moxa_boards[numBoards].boardType-1], - moxa_boards[numBoards].baseAddr); - numBoards++; - } - } - /* Find the boards defined form module args. */ + /* Find the boards defined from module args. */ #ifdef MODULE + { + struct moxa_board_conf *brd = moxa_boards; + unsigned int i; for (i = 0; i < MAX_BOARDS; i++) { - if ((type[i] == MOXA_BOARD_C218_ISA) || - (type[i] == MOXA_BOARD_C320_ISA)) { + if (!baseaddr[i]) + break; + if (type[i] == MOXA_BOARD_C218_ISA || + type[i] == MOXA_BOARD_C320_ISA) { pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", - numBoards + 1, moxa_brdname[type[i] - 1], - (unsigned long)baseaddr[i]); - if (numBoards >= MAX_BOARDS) { - printk(KERN_WARNING "More than %d MOXA " - "Intellio family boards found. Board " - "is ignored.\n", MAX_BOARDS); + isabrds + 1, moxa_brdname[type[i] - 1], + baseaddr[i]); + brd->boardType = type[i]; + brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : + numports[i]; + brd->busType = MOXA_BUS_TYPE_ISA; + brd->basemem = ioremap_nocache(baseaddr[i], 0x4000); + if (!brd->basemem) { + printk(KERN_ERR "MOXA: can't remap %lx\n", + baseaddr[i]); continue; } - moxa_boards[numBoards].boardType = type[i]; - if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) - moxa_boards[numBoards].numPorts = 8; - else - moxa_boards[numBoards].numPorts = numports[i]; - moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA; - moxa_boards[numBoards].baseAddr = baseaddr[i]; - numBoards++; + if (moxa_init_board(brd, NULL)) { + iounmap(brd->basemem); + brd->basemem = NULL; + continue; + } + + printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " + "ready (%u ports, firmware loaded)\n", + baseaddr[i], brd->numPorts); + + brd++; + isabrds++; } } + } #endif #ifdef CONFIG_PCI retval = pci_register_driver(&moxa_pci_driver); if (retval) { - printk(KERN_ERR "Can't register moxa pci driver!\n"); - if (numBoards) + printk(KERN_ERR "Can't register MOXA pci driver!\n"); + if (isabrds) retval = 0; } #endif - for (i = 0; i < numBoards; i++) { - moxa_boards[i].basemem = ioremap(moxa_boards[i].baseAddr, - 0x4000); - } - return retval; } static void __exit moxa_exit(void) { - int i; + unsigned int i; - del_timer_sync(&moxaTimer); +#ifdef CONFIG_PCI + pci_unregister_driver(&moxa_pci_driver); +#endif + + for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ + if (moxa_boards[i].ready) + moxa_board_deinit(&moxa_boards[i]); - for (i = 0; i < MAX_PORTS; i++) - del_timer_sync(&moxa_ports[i].emptyTimer); + del_timer_sync(&moxaTimer); if (tty_unregister_driver(moxaDriver)) printk(KERN_ERR "Couldn't unregister MOXA Intellio family " "serial driver\n"); put_tty_driver(moxaDriver); - -#ifdef CONFIG_PCI - pci_unregister_driver(&moxa_pci_driver); -#endif - - for (i = 0; i < MAX_BOARDS; i++) - if (moxa_boards[i].basemem) - iounmap(moxa_boards[i].basemem); } module_init(moxa_init); module_exit(moxa_exit); +static void moxa_close_port(struct moxa_port *ch) +{ + moxa_shut_down(ch); + MoxaPortFlushData(ch, 2); + ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; + ch->tty->driver_data = NULL; + ch->tty = NULL; +} + +static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, + struct moxa_port *ch) +{ + DEFINE_WAIT(wait); + int retval = 0; + u8 dcd; + + while (1) { + prepare_to_wait(&ch->open_wait, &wait, TASK_INTERRUPTIBLE); + if (tty_hung_up_p(filp)) { +#ifdef SERIAL_DO_RESTART + retval = -ERESTARTSYS; +#else + retval = -EAGAIN; +#endif + break; + } + spin_lock_bh(&moxa_lock); + dcd = ch->DCDState; + spin_unlock_bh(&moxa_lock); + if (dcd) + break; + + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } + schedule(); + } + finish_wait(&ch->open_wait, &wait); + + return retval; +} + static int moxa_open(struct tty_struct *tty, struct file *filp) { + struct moxa_board_conf *brd; struct moxa_port *ch; int port; int retval; port = tty->index; if (port == MAX_PORTS) { - return (0); + return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; } - if (!MoxaPortIsValid(port)) { - tty->driver_data = NULL; - return (-ENODEV); + if (mutex_lock_interruptible(&moxa_openlock)) + return -ERESTARTSYS; + brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; + if (!brd->ready) { + mutex_unlock(&moxa_openlock); + return -ENODEV; } - ch = &moxa_ports[port]; + ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; ch->count++; tty->driver_data = ch; ch->tty = tty; if (!(ch->asyncflags & ASYNC_INITIALIZED)) { ch->statusflags = 0; moxa_set_tty_param(tty, tty->termios); - MoxaPortLineCtrl(ch->port, 1, 1); - MoxaPortEnable(ch->port); + MoxaPortLineCtrl(ch, 1, 1); + MoxaPortEnable(ch); + MoxaSetFifo(ch, ch->type == PORT_16550A); ch->asyncflags |= ASYNC_INITIALIZED; } - retval = moxa_block_till_ready(tty, filp, ch); + mutex_unlock(&moxa_openlock); - moxa_unthrottle(tty); - - if (ch->type == PORT_16550A) { - MoxaSetFifo(ch->port, 1); - } else { - MoxaSetFifo(ch->port, 0); - } + retval = 0; + if (!(filp->f_flags & O_NONBLOCK) && !C_CLOCAL(tty)) + retval = moxa_block_till_ready(tty, filp, ch); + mutex_lock(&moxa_openlock); + if (retval) { + if (ch->count) /* 0 means already hung up... */ + if (--ch->count == 0) + moxa_close_port(ch); + } else + ch->asyncflags |= ASYNC_NORMAL_ACTIVE; + mutex_unlock(&moxa_openlock); - return (retval); + return retval; } static void moxa_close(struct tty_struct *tty, struct file *filp) @@ -524,23 +1197,14 @@ static void moxa_close(struct tty_struct *tty, struct file *filp) int port; port = tty->index; - if (port == MAX_PORTS) { - return; - } - if (!MoxaPortIsValid(port)) { - pr_debug("Invalid portno in moxa_close\n"); - tty->driver_data = NULL; - return; - } - if (tty->driver_data == NULL) { + if (port == MAX_PORTS || tty_hung_up_p(filp)) return; - } - if (tty_hung_up_p(filp)) { - return; - } - ch = (struct moxa_port *) tty->driver_data; - if ((tty->count == 1) && (ch->count != 1)) { + mutex_lock(&moxa_openlock); + ch = tty->driver_data; + if (ch == NULL) + goto unlock; + if (tty->count == 1 && ch->count != 1) { printk(KERN_WARNING "moxa_close: bad serial port count; " "tty->count is 1, ch->count is %d\n", ch->count); ch->count = 1; @@ -550,59 +1214,35 @@ static void moxa_close(struct tty_struct *tty, struct file *filp) "device=%s\n", tty->name); ch->count = 0; } - if (ch->count) { - return; - } - ch->asyncflags |= ASYNC_CLOSING; + if (ch->count) + goto unlock; ch->cflag = tty->termios->c_cflag; if (ch->asyncflags & ASYNC_INITIALIZED) { moxa_setup_empty_event(tty); tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */ - del_timer_sync(&moxa_ports[ch->port].emptyTimer); - } - moxa_shut_down(ch); - MoxaPortFlushData(port, 2); - - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); - tty_ldisc_flush(tty); - - tty->closing = 0; - ch->event = 0; - ch->tty = NULL; - if (ch->blocked_open) { - if (ch->close_delay) { - msleep_interruptible(jiffies_to_msecs(ch->close_delay)); - } - wake_up_interruptible(&ch->open_wait); } - ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); - complete_all(&ch->close_wait); + + moxa_close_port(ch); +unlock: + mutex_unlock(&moxa_openlock); } static int moxa_write(struct tty_struct *tty, const unsigned char *buf, int count) { - struct moxa_port *ch; - int len, port; - unsigned long flags; + struct moxa_port *ch = tty->driver_data; + int len; - ch = (struct moxa_port *) tty->driver_data; if (ch == NULL) - return (0); - port = ch->port; + return 0; - spin_lock_irqsave(&moxa_lock, flags); - len = MoxaPortWriteData(port, (unsigned char *) buf, count); - spin_unlock_irqrestore(&moxa_lock, flags); + spin_lock_bh(&moxa_lock); + len = MoxaPortWriteData(ch, buf, count); + spin_unlock_bh(&moxa_lock); - /********************************************* - if ( !(ch->statusflags & LOWWAIT) && - ((len != count) || (MoxaPortTxFree(port) <= 100)) ) - ************************************************/ ch->statusflags |= LOWWAIT; - return (len); + return len; } static int moxa_write_room(struct tty_struct *tty) @@ -610,27 +1250,27 @@ static int moxa_write_room(struct tty_struct *tty) struct moxa_port *ch; if (tty->stopped) - return (0); - ch = (struct moxa_port *) tty->driver_data; + return 0; + ch = tty->driver_data; if (ch == NULL) - return (0); - return (MoxaPortTxFree(ch->port)); + return 0; + return MoxaPortTxFree(ch); } static void moxa_flush_buffer(struct tty_struct *tty) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch = tty->driver_data; if (ch == NULL) return; - MoxaPortFlushData(ch->port, 1); + MoxaPortFlushData(ch, 1); tty_wakeup(tty); } static int moxa_chars_in_buffer(struct tty_struct *tty) { + struct moxa_port *ch = tty->driver_data; int chars; - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; /* * Sigh...I have to check if driver_data is NULL here, because @@ -639,8 +1279,9 @@ static int moxa_chars_in_buffer(struct tty_struct *tty) * routine. And since the open() failed, we return 0 here. TDJ */ if (ch == NULL) - return (0); - chars = MoxaPortTxQueue(ch->port); + return 0; + lock_kernel(); + chars = MoxaPortTxQueue(ch); if (chars) { /* * Make it possible to wakeup anything waiting for output @@ -649,73 +1290,54 @@ static int moxa_chars_in_buffer(struct tty_struct *tty) if (!(ch->statusflags & EMPTYWAIT)) moxa_setup_empty_event(tty); } - return (chars); -} - -static void moxa_flush_chars(struct tty_struct *tty) -{ - /* - * Don't think I need this, because this is called to empty the TX - * buffer for the 16450, 16550, etc. - */ -} - -static void moxa_put_char(struct tty_struct *tty, unsigned char c) -{ - struct moxa_port *ch; - int port; - unsigned long flags; - - ch = (struct moxa_port *) tty->driver_data; - if (ch == NULL) - return; - port = ch->port; - spin_lock_irqsave(&moxa_lock, flags); - MoxaPortWriteData(port, &c, 1); - spin_unlock_irqrestore(&moxa_lock, flags); - /************************************************ - if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) ) - *************************************************/ - ch->statusflags |= LOWWAIT; + unlock_kernel(); + return chars; } static int moxa_tiocmget(struct tty_struct *tty, struct file *file) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; - int port; + struct moxa_port *ch; int flag = 0, dtr, rts; - port = tty->index; - if ((port != MAX_PORTS) && (!ch)) - return (-EINVAL); + mutex_lock(&moxa_openlock); + ch = tty->driver_data; + if (!ch) { + mutex_unlock(&moxa_openlock); + return -EINVAL; + } - MoxaPortGetLineOut(ch->port, &dtr, &rts); + MoxaPortGetLineOut(ch, &dtr, &rts); if (dtr) flag |= TIOCM_DTR; if (rts) flag |= TIOCM_RTS; - dtr = MoxaPortLineStatus(ch->port); + dtr = MoxaPortLineStatus(ch); if (dtr & 1) flag |= TIOCM_CTS; if (dtr & 2) flag |= TIOCM_DSR; if (dtr & 4) flag |= TIOCM_CD; + mutex_unlock(&moxa_openlock); return flag; } static int moxa_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch; int port; int dtr, rts; port = tty->index; - if ((port != MAX_PORTS) && (!ch)) - return (-EINVAL); + mutex_lock(&moxa_openlock); + ch = tty->driver_data; + if (!ch) { + mutex_unlock(&moxa_openlock); + return -EINVAL; + } - MoxaPortGetLineOut(ch->port, &dtr, &rts); + MoxaPortGetLineOut(ch, &dtr, &rts); if (set & TIOCM_RTS) rts = 1; if (set & TIOCM_DTR) @@ -724,105 +1346,51 @@ static int moxa_tiocmset(struct tty_struct *tty, struct file *file, rts = 0; if (clear & TIOCM_DTR) dtr = 0; - MoxaPortLineCtrl(ch->port, dtr, rts); + MoxaPortLineCtrl(ch, dtr, rts); + mutex_unlock(&moxa_openlock); return 0; } -static int moxa_ioctl(struct tty_struct *tty, struct file *file, - unsigned int cmd, unsigned long arg) -{ - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; - register int port; - void __user *argp = (void __user *)arg; - int retval; - - port = tty->index; - if ((port != MAX_PORTS) && (!ch)) - return (-EINVAL); - - switch (cmd) { - case TCSBRK: /* SVID version: non-zero arg --> no break */ - retval = tty_check_change(tty); - if (retval) - return (retval); - moxa_setup_empty_event(tty); - tty_wait_until_sent(tty, 0); - if (!arg) - MoxaPortSendBreak(ch->port, 0); - return (0); - case TCSBRKP: /* support for POSIX tcsendbreak() */ - retval = tty_check_change(tty); - if (retval) - return (retval); - moxa_setup_empty_event(tty); - tty_wait_until_sent(tty, 0); - MoxaPortSendBreak(ch->port, arg); - return (0); - case TIOCGSOFTCAR: - return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp); - case TIOCSSOFTCAR: - if(get_user(retval, (unsigned long __user *) argp)) - return -EFAULT; - arg = retval; - tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | - (arg ? CLOCAL : 0)); - if (C_CLOCAL(tty)) - ch->asyncflags &= ~ASYNC_CHECK_CD; - else - ch->asyncflags |= ASYNC_CHECK_CD; - return (0); - case TIOCGSERIAL: - return moxa_get_serial_info(ch, argp); - - case TIOCSSERIAL: - return moxa_set_serial_info(ch, argp); - default: - retval = MoxaDriverIoctl(cmd, arg, port); - } - return (retval); -} - static void moxa_throttle(struct tty_struct *tty) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch = tty->driver_data; ch->statusflags |= THROTTLE; } static void moxa_unthrottle(struct tty_struct *tty) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch = tty->driver_data; ch->statusflags &= ~THROTTLE; } static void moxa_set_termios(struct tty_struct *tty, - struct ktermios *old_termios) + struct ktermios *old_termios) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch = tty->driver_data; if (ch == NULL) return; moxa_set_tty_param(tty, old_termios); - if (!(old_termios->c_cflag & CLOCAL) && - (tty->termios->c_cflag & CLOCAL)) + if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) wake_up_interruptible(&ch->open_wait); } static void moxa_stop(struct tty_struct *tty) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch = tty->driver_data; if (ch == NULL) return; - MoxaPortTxDisable(ch->port); + MoxaPortTxDisable(ch); ch->statusflags |= TXSTOPPED; } static void moxa_start(struct tty_struct *tty) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch = tty->driver_data; if (ch == NULL) return; @@ -830,91 +1398,143 @@ static void moxa_start(struct tty_struct *tty) if (!(ch->statusflags & TXSTOPPED)) return; - MoxaPortTxEnable(ch->port); + MoxaPortTxEnable(ch); ch->statusflags &= ~TXSTOPPED; } static void moxa_hangup(struct tty_struct *tty) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch; - moxa_flush_buffer(tty); - moxa_shut_down(ch); - ch->event = 0; + mutex_lock(&moxa_openlock); + ch = tty->driver_data; + if (ch == NULL) { + mutex_unlock(&moxa_openlock); + return; + } ch->count = 0; - ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; - ch->tty = NULL; + moxa_close_port(ch); + mutex_unlock(&moxa_openlock); + wake_up_interruptible(&ch->open_wait); } -static void moxa_poll(unsigned long ignored) +static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) { - register int card; - struct moxa_port *ch; - struct tty_struct *tp; - int i, ports; + dcd = !!dcd; - del_timer(&moxaTimer); + if (dcd != p->DCDState && p->tty && C_CLOCAL(p->tty)) { + if (!dcd) + tty_hangup(p->tty); + } + p->DCDState = dcd; +} - if (MoxaDriverPoll() < 0) { - mod_timer(&moxaTimer, jiffies + HZ / 50); - return; +static int moxa_poll_port(struct moxa_port *p, unsigned int handle, + u16 __iomem *ip) +{ + struct tty_struct *tty = p->tty; + void __iomem *ofsAddr; + unsigned int inited = p->asyncflags & ASYNC_INITIALIZED; + u16 intr; + + if (tty) { + if ((p->statusflags & EMPTYWAIT) && + MoxaPortTxQueue(p) == 0) { + p->statusflags &= ~EMPTYWAIT; + tty_wakeup(tty); + } + if ((p->statusflags & LOWWAIT) && !tty->stopped && + MoxaPortTxQueue(p) <= WAKEUP_CHARS) { + p->statusflags &= ~LOWWAIT; + tty_wakeup(tty); + } + + if (inited && !(p->statusflags & THROTTLE) && + MoxaPortRxQueue(p) > 0) { /* RX */ + MoxaPortReadData(p); + tty_schedule_flip(tty); + } + } else { + p->statusflags &= ~EMPTYWAIT; + MoxaPortFlushData(p, 0); /* flush RX */ } + + if (!handle) /* nothing else to do */ + return 0; + + intr = readw(ip); /* port irq status */ + if (intr == 0) + return 0; + + writew(0, ip); /* ACK port */ + ofsAddr = p->tableAddr; + if (intr & IntrTx) /* disable tx intr */ + writew(readw(ofsAddr + HostStat) & ~WakeupTx, + ofsAddr + HostStat); + + if (!inited) + return 0; + + if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ + tty_insert_flip_char(tty, 0, TTY_BREAK); + tty_schedule_flip(tty); + } + + if (intr & IntrLine) + moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); + + return 0; +} + +static void moxa_poll(unsigned long ignored) +{ + struct moxa_board_conf *brd; + u16 __iomem *ip; + unsigned int card, port, served = 0; + + spin_lock(&moxa_lock); for (card = 0; card < MAX_BOARDS; card++) { - if ((ports = MoxaPortsOfCard(card)) <= 0) + brd = &moxa_boards[card]; + if (!brd->ready) continue; - ch = &moxa_ports[card * MAX_PORTS_PER_BOARD]; - for (i = 0; i < ports; i++, ch++) { - if ((ch->asyncflags & ASYNC_INITIALIZED) == 0) - continue; - if (!(ch->statusflags & THROTTLE) && - (MoxaPortRxQueue(ch->port) > 0)) - moxa_receive_data(ch); - if ((tp = ch->tty) == 0) - continue; - if (ch->statusflags & LOWWAIT) { - if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) { - if (!tp->stopped) { - ch->statusflags &= ~LOWWAIT; - tty_wakeup(tp); - } - } - } - if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) { - tty_insert_flip_char(tp, 0, TTY_BREAK); - tty_schedule_flip(tp); - } - if (MoxaPortDCDChange(ch->port)) { - if (ch->asyncflags & ASYNC_CHECK_CD) { - if (MoxaPortDCDON(ch->port)) - wake_up_interruptible(&ch->open_wait); - else { - tty_hangup(tp); - wake_up_interruptible(&ch->open_wait); - ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; - } + + served++; + + ip = NULL; + if (readb(brd->intPend) == 0xff) + ip = brd->intTable + readb(brd->intNdx); + + for (port = 0; port < brd->numPorts; port++) + moxa_poll_port(&brd->ports[port], !!ip, ip + port); + + if (ip) + writeb(0, brd->intPend); /* ACK */ + + if (moxaLowWaterChk) { + struct moxa_port *p = brd->ports; + for (port = 0; port < brd->numPorts; port++, p++) + if (p->lowChkFlag) { + p->lowChkFlag = 0; + moxa_low_water_check(p->tableAddr); } - } } } + moxaLowWaterChk = 0; - mod_timer(&moxaTimer, jiffies + HZ / 50); + if (served) + mod_timer(&moxaTimer, jiffies + HZ / 50); + spin_unlock(&moxa_lock); } /******************************************************************************/ static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) { - register struct ktermios *ts; - struct moxa_port *ch; + register struct ktermios *ts = tty->termios; + struct moxa_port *ch = tty->driver_data; int rts, cts, txflow, rxflow, xany, baud; - ch = (struct moxa_port *) tty->driver_data; - ts = tty->termios; - if (ts->c_cflag & CLOCAL) - ch->asyncflags &= ~ASYNC_CHECK_CD; - else - ch->asyncflags |= ASYNC_CHECK_CD; rts = cts = txflow = rxflow = xany = 0; if (ts->c_cflag & CRTSCTS) rts = cts = 1; @@ -927,776 +1547,60 @@ static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_term /* Clear the features we don't support */ ts->c_cflag &= ~CMSPAR; - MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany); - baud = MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty)); + MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); + baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); if (baud == -1) baud = tty_termios_baud_rate(old_termios); /* Not put the baud rate into the termios data */ tty_encode_baud_rate(tty, baud, baud); } -static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, - struct moxa_port *ch) -{ - DECLARE_WAITQUEUE(wait,current); - unsigned long flags; - int retval; - int do_clocal = C_CLOCAL(tty); - - /* - * If the device is in the middle of being closed, then block - * until it's done, and then try again. - */ - if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) { - if (ch->asyncflags & ASYNC_CLOSING) - wait_for_completion_interruptible(&ch->close_wait); -#ifdef SERIAL_DO_RESTART - if (ch->asyncflags & ASYNC_HUP_NOTIFY) - return (-EAGAIN); - else - return (-ERESTARTSYS); -#else - return (-EAGAIN); -#endif - } - /* - * If non-blocking mode is set, then make the check up front - * and then exit. - */ - if (filp->f_flags & O_NONBLOCK) { - ch->asyncflags |= ASYNC_NORMAL_ACTIVE; - return (0); - } - /* - * Block waiting for the carrier detect and the line to become free - */ - retval = 0; - add_wait_queue(&ch->open_wait, &wait); - pr_debug("block_til_ready before block: ttys%d, count = %d\n", - ch->port, ch->count); - spin_lock_irqsave(&moxa_lock, flags); - if (!tty_hung_up_p(filp)) - ch->count--; - ch->blocked_open++; - spin_unlock_irqrestore(&moxa_lock, flags); - - while (1) { - set_current_state(TASK_INTERRUPTIBLE); - if (tty_hung_up_p(filp) || - !(ch->asyncflags & ASYNC_INITIALIZED)) { -#ifdef SERIAL_DO_RESTART - if (ch->asyncflags & ASYNC_HUP_NOTIFY) - retval = -EAGAIN; - else - retval = -ERESTARTSYS; -#else - retval = -EAGAIN; -#endif - break; - } - if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal || - MoxaPortDCDON(ch->port))) - break; - - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } - schedule(); - } - set_current_state(TASK_RUNNING); - remove_wait_queue(&ch->open_wait, &wait); - - spin_lock_irqsave(&moxa_lock, flags); - if (!tty_hung_up_p(filp)) - ch->count++; - ch->blocked_open--; - spin_unlock_irqrestore(&moxa_lock, flags); - pr_debug("block_til_ready after blocking: ttys%d, count = %d\n", - ch->port, ch->count); - if (retval) - return (retval); - /* FIXME: review to see if we need to use set_bit on these */ - ch->asyncflags |= ASYNC_NORMAL_ACTIVE; - return 0; -} - static void moxa_setup_empty_event(struct tty_struct *tty) { struct moxa_port *ch = tty->driver_data; - unsigned long flags; - spin_lock_irqsave(&moxa_lock, flags); + spin_lock_bh(&moxa_lock); ch->statusflags |= EMPTYWAIT; - mod_timer(&moxa_ports[ch->port].emptyTimer, jiffies + HZ); - spin_unlock_irqrestore(&moxa_lock, flags); -} - -static void moxa_check_xmit_empty(unsigned long data) -{ - struct moxa_port *ch; - - ch = (struct moxa_port *) data; - if (ch->tty && (ch->statusflags & EMPTYWAIT)) { - if (MoxaPortTxQueue(ch->port) == 0) { - ch->statusflags &= ~EMPTYWAIT; - tty_wakeup(ch->tty); - return; - } - mod_timer(&moxa_ports[ch->port].emptyTimer, - round_jiffies(jiffies + HZ)); - } else - ch->statusflags &= ~EMPTYWAIT; + spin_unlock_bh(&moxa_lock); } static void moxa_shut_down(struct moxa_port *ch) { - struct tty_struct *tp; + struct tty_struct *tp = ch->tty; if (!(ch->asyncflags & ASYNC_INITIALIZED)) return; - tp = ch->tty; - - MoxaPortDisable(ch->port); + MoxaPortDisable(ch); /* * If we're a modem control device and HUPCL is on, drop RTS & DTR. */ - if (tp->termios->c_cflag & HUPCL) - MoxaPortLineCtrl(ch->port, 0, 0); + if (C_HUPCL(tp)) + MoxaPortLineCtrl(ch, 0, 0); + spin_lock_bh(&moxa_lock); ch->asyncflags &= ~ASYNC_INITIALIZED; + spin_unlock_bh(&moxa_lock); } -static void moxa_receive_data(struct moxa_port *ch) -{ - struct tty_struct *tp; - struct ktermios *ts; - unsigned long flags; - - ts = NULL; - tp = ch->tty; - if (tp) - ts = tp->termios; - /************************************************** - if ( !tp || !ts || !(ts->c_cflag & CREAD) ) { - *****************************************************/ - if (!tp || !ts) { - MoxaPortFlushData(ch->port, 0); - return; - } - spin_lock_irqsave(&moxa_lock, flags); - MoxaPortReadData(ch->port, tp); - spin_unlock_irqrestore(&moxa_lock, flags); - tty_schedule_flip(tp); -} - -#define Magic_code 0x404 - -/* - * System Configuration - */ -/* - * for C218 BIOS initialization - */ -#define C218_ConfBase 0x800 -#define C218_status (C218_ConfBase + 0) /* BIOS running status */ -#define C218_diag (C218_ConfBase + 2) /* diagnostic status */ -#define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */ -#define C218DLoad_len (C218_ConfBase + 6) /* WORD */ -#define C218check_sum (C218_ConfBase + 8) /* BYTE */ -#define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */ -#define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */ -#define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */ -#define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */ -#define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */ - -#define C218_LoadBuf 0x0F00 -#define C218_KeyCode 0x218 -#define CP204J_KeyCode 0x204 - -/* - * for C320 BIOS initialization - */ -#define C320_ConfBase 0x800 -#define C320_LoadBuf 0x0f00 -#define STS_init 0x05 /* for C320_status */ - -#define C320_status C320_ConfBase + 0 /* BIOS running status */ -#define C320_diag C320_ConfBase + 2 /* diagnostic status */ -#define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */ -#define C320DLoad_len C320_ConfBase + 6 /* WORD */ -#define C320check_sum C320_ConfBase + 8 /* WORD */ -#define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */ -#define C320bapi_len C320_ConfBase + 0x0c /* WORD */ -#define C320UART_no C320_ConfBase + 0x0e /* WORD */ - -#define C320_KeyCode 0x320 - -#define FixPage_addr 0x0000 /* starting addr of static page */ -#define DynPage_addr 0x2000 /* starting addr of dynamic page */ -#define C218_start 0x3000 /* starting addr of C218 BIOS prg */ -#define Control_reg 0x1ff0 /* select page and reset control */ -#define HW_reset 0x80 - -/* - * Function Codes - */ -#define FC_CardReset 0x80 -#define FC_ChannelReset 1 /* C320 firmware not supported */ -#define FC_EnableCH 2 -#define FC_DisableCH 3 -#define FC_SetParam 4 -#define FC_SetMode 5 -#define FC_SetRate 6 -#define FC_LineControl 7 -#define FC_LineStatus 8 -#define FC_XmitControl 9 -#define FC_FlushQueue 10 -#define FC_SendBreak 11 -#define FC_StopBreak 12 -#define FC_LoopbackON 13 -#define FC_LoopbackOFF 14 -#define FC_ClrIrqTable 15 -#define FC_SendXon 16 -#define FC_SetTermIrq 17 /* C320 firmware not supported */ -#define FC_SetCntIrq 18 /* C320 firmware not supported */ -#define FC_SetBreakIrq 19 -#define FC_SetLineIrq 20 -#define FC_SetFlowCtl 21 -#define FC_GenIrq 22 -#define FC_InCD180 23 -#define FC_OutCD180 24 -#define FC_InUARTreg 23 -#define FC_OutUARTreg 24 -#define FC_SetXonXoff 25 -#define FC_OutCD180CCR 26 -#define FC_ExtIQueue 27 -#define FC_ExtOQueue 28 -#define FC_ClrLineIrq 29 -#define FC_HWFlowCtl 30 -#define FC_GetClockRate 35 -#define FC_SetBaud 36 -#define FC_SetDataMode 41 -#define FC_GetCCSR 43 -#define FC_GetDataError 45 -#define FC_RxControl 50 -#define FC_ImmSend 51 -#define FC_SetXonState 52 -#define FC_SetXoffState 53 -#define FC_SetRxFIFOTrig 54 -#define FC_SetTxFIFOCnt 55 -#define FC_UnixRate 56 -#define FC_UnixResetTimer 57 - -#define RxFIFOTrig1 0 -#define RxFIFOTrig4 1 -#define RxFIFOTrig8 2 -#define RxFIFOTrig14 3 - -/* - * Dual-Ported RAM - */ -#define DRAM_global 0 -#define INT_data (DRAM_global + 0) -#define Config_base (DRAM_global + 0x108) - -#define IRQindex (INT_data + 0) -#define IRQpending (INT_data + 4) -#define IRQtable (INT_data + 8) - -/* - * Interrupt Status - */ -#define IntrRx 0x01 /* receiver data O.K. */ -#define IntrTx 0x02 /* transmit buffer empty */ -#define IntrFunc 0x04 /* function complete */ -#define IntrBreak 0x08 /* received break */ -#define IntrLine 0x10 /* line status change - for transmitter */ -#define IntrIntr 0x20 /* received INTR code */ -#define IntrQuit 0x40 /* received QUIT code */ -#define IntrEOF 0x80 /* received EOF code */ - -#define IntrRxTrigger 0x100 /* rx data count reach tigger value */ -#define IntrTxTrigger 0x200 /* tx data count below trigger value */ - -#define Magic_no (Config_base + 0) -#define Card_model_no (Config_base + 2) -#define Total_ports (Config_base + 4) -#define Module_cnt (Config_base + 8) -#define Module_no (Config_base + 10) -#define Timer_10ms (Config_base + 14) -#define Disable_IRQ (Config_base + 20) -#define TMS320_PORT1 (Config_base + 22) -#define TMS320_PORT2 (Config_base + 24) -#define TMS320_CLOCK (Config_base + 26) - -/* - * DATA BUFFER in DRAM - */ -#define Extern_table 0x400 /* Base address of the external table - (24 words * 64) total 3K bytes - (24 words * 128) total 6K bytes */ -#define Extern_size 0x60 /* 96 bytes */ -#define RXrptr 0x00 /* read pointer for RX buffer */ -#define RXwptr 0x02 /* write pointer for RX buffer */ -#define TXrptr 0x04 /* read pointer for TX buffer */ -#define TXwptr 0x06 /* write pointer for TX buffer */ -#define HostStat 0x08 /* IRQ flag and general flag */ -#define FlagStat 0x0A -#define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */ - /* x x x x | | | | */ - /* | | | + CTS flow */ - /* | | +--- RTS flow */ - /* | +------ TX Xon/Xoff */ - /* +--------- RX Xon/Xoff */ -#define Break_cnt 0x0E /* received break count */ -#define CD180TXirq 0x10 /* if non-0: enable TX irq */ -#define RX_mask 0x12 -#define TX_mask 0x14 -#define Ofs_rxb 0x16 -#define Ofs_txb 0x18 -#define Page_rxb 0x1A -#define Page_txb 0x1C -#define EndPage_rxb 0x1E -#define EndPage_txb 0x20 -#define Data_error 0x22 -#define RxTrigger 0x28 -#define TxTrigger 0x2a - -#define rRXwptr 0x34 -#define Low_water 0x36 - -#define FuncCode 0x40 -#define FuncArg 0x42 -#define FuncArg1 0x44 - -#define C218rx_size 0x2000 /* 8K bytes */ -#define C218tx_size 0x8000 /* 32K bytes */ - -#define C218rx_mask (C218rx_size - 1) -#define C218tx_mask (C218tx_size - 1) - -#define C320p8rx_size 0x2000 -#define C320p8tx_size 0x8000 -#define C320p8rx_mask (C320p8rx_size - 1) -#define C320p8tx_mask (C320p8tx_size - 1) - -#define C320p16rx_size 0x2000 -#define C320p16tx_size 0x4000 -#define C320p16rx_mask (C320p16rx_size - 1) -#define C320p16tx_mask (C320p16tx_size - 1) - -#define C320p24rx_size 0x2000 -#define C320p24tx_size 0x2000 -#define C320p24rx_mask (C320p24rx_size - 1) -#define C320p24tx_mask (C320p24tx_size - 1) - -#define C320p32rx_size 0x1000 -#define C320p32tx_size 0x1000 -#define C320p32rx_mask (C320p32rx_size - 1) -#define C320p32tx_mask (C320p32tx_size - 1) - -#define Page_size 0x2000 -#define Page_mask (Page_size - 1) -#define C218rx_spage 3 -#define C218tx_spage 4 -#define C218rx_pageno 1 -#define C218tx_pageno 4 -#define C218buf_pageno 5 - -#define C320p8rx_spage 3 -#define C320p8tx_spage 4 -#define C320p8rx_pgno 1 -#define C320p8tx_pgno 4 -#define C320p8buf_pgno 5 - -#define C320p16rx_spage 3 -#define C320p16tx_spage 4 -#define C320p16rx_pgno 1 -#define C320p16tx_pgno 2 -#define C320p16buf_pgno 3 - -#define C320p24rx_spage 3 -#define C320p24tx_spage 4 -#define C320p24rx_pgno 1 -#define C320p24tx_pgno 1 -#define C320p24buf_pgno 2 - -#define C320p32rx_spage 3 -#define C320p32tx_ofs C320p32rx_size -#define C320p32tx_spage 3 -#define C320p32buf_pgno 1 - -/* - * Host Status - */ -#define WakeupRx 0x01 -#define WakeupTx 0x02 -#define WakeupBreak 0x08 -#define WakeupLine 0x10 -#define WakeupIntr 0x20 -#define WakeupQuit 0x40 -#define WakeupEOF 0x80 /* used in VTIME control */ -#define WakeupRxTrigger 0x100 -#define WakeupTxTrigger 0x200 -/* - * Flag status - */ -#define Rx_over 0x01 -#define Xoff_state 0x02 -#define Tx_flowOff 0x04 -#define Tx_enable 0x08 -#define CTS_state 0x10 -#define DSR_state 0x20 -#define DCD_state 0x80 -/* - * FlowControl - */ -#define CTS_FlowCtl 1 -#define RTS_FlowCtl 2 -#define Tx_FlowCtl 4 -#define Rx_FlowCtl 8 -#define IXM_IXANY 0x10 - -#define LowWater 128 - -#define DTR_ON 1 -#define RTS_ON 2 -#define CTS_ON 1 -#define DSR_ON 2 -#define DCD_ON 8 - -/* mode definition */ -#define MX_CS8 0x03 -#define MX_CS7 0x02 -#define MX_CS6 0x01 -#define MX_CS5 0x00 - -#define MX_STOP1 0x00 -#define MX_STOP15 0x04 -#define MX_STOP2 0x08 - -#define MX_PARNONE 0x00 -#define MX_PAREVEN 0x40 -#define MX_PARODD 0xC0 - -/* - * Query - */ - -struct mon_str { - int tick; - int rxcnt[MAX_PORTS]; - int txcnt[MAX_PORTS]; -}; - -#define DCD_changed 0x01 -#define DCD_oldstate 0x80 - -static unsigned char moxaBuff[10240]; -static int moxaLowWaterChk; -static int moxaCard; -static struct mon_str moxaLog; -static int moxaFuncTout = HZ / 2; - -static void moxafunc(void __iomem *, int, ushort); -static void moxa_wait_finish(void __iomem *); -static void moxa_low_water_check(void __iomem *); -static int moxaloadbios(int, unsigned char __user *, int); -static int moxafindcard(int); -static int moxaload320b(int, unsigned char __user *, int); -static int moxaloadcode(int, unsigned char __user *, int); -static int moxaloadc218(int, void __iomem *, int); -static int moxaloadc320(int, void __iomem *, int, int *); - /***************************************************************************** * Driver level functions: * - * 1. MoxaDriverInit(void); * - * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); * - * 3. MoxaDriverPoll(void); * *****************************************************************************/ -void MoxaDriverInit(void) -{ - struct moxa_port *p; - unsigned int i; - moxaFuncTout = HZ / 2; /* 500 mini-seconds */ - moxaCard = 0; - moxaLog.tick = 0; - moxaLowWaterChk = 0; - for (i = 0; i < MAX_PORTS; i++) { - p = &moxa_ports[i]; - p->chkPort = 0; - p->lowChkFlag = 0; - p->lineCtrl = 0; - moxaLog.rxcnt[i] = 0; - moxaLog.txcnt[i] = 0; - } -} - -#define MOXA 0x400 -#define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */ -#define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */ -#define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */ -#define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */ -#define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */ -#define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */ -#define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */ -#define MOXA_GETDATACOUNT (MOXA + 23) -#define MOXA_GET_IOQUEUE (MOXA + 27) -#define MOXA_FLUSH_QUEUE (MOXA + 28) -#define MOXA_GET_CONF (MOXA + 35) /* configuration */ -#define MOXA_GET_MAJOR (MOXA + 63) -#define MOXA_GET_CUMAJOR (MOXA + 64) -#define MOXA_GETMSTATUS (MOXA + 65) - -struct dl_str { - char __user *buf; - int len; - int cardno; -}; - -static struct dl_str dltmp; - -void MoxaPortFlushData(int port, int mode) +static void MoxaPortFlushData(struct moxa_port *port, int mode) { void __iomem *ofsAddr; - if ((mode < 0) || (mode > 2)) + if (mode < 0 || mode > 2) return; - ofsAddr = moxa_ports[port].tableAddr; + ofsAddr = port->tableAddr; moxafunc(ofsAddr, FC_FlushQueue, mode); if (mode != 1) { - moxa_ports[port].lowChkFlag = 0; + port->lowChkFlag = 0; moxa_low_water_check(ofsAddr); } } -int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port) -{ - int i; - int status; - int MoxaPortTxQueue(int), MoxaPortRxQueue(int); - void __user *argp = (void __user *)arg; - - if (port == MAX_PORTS) { - if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) && - (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) && - (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) && - (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) && - (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS)) - return (-EINVAL); - } - switch (cmd) { - case MOXA_GET_CONF: - if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * - sizeof(struct moxa_board_conf))) - return -EFAULT; - return (0); - case MOXA_INIT_DRIVER: - if ((int) arg == 0x404) - MoxaDriverInit(); - return (0); - case MOXA_GETDATACOUNT: - moxaLog.tick = jiffies; - if(copy_to_user(argp, &moxaLog, sizeof(struct mon_str))) - return -EFAULT; - return (0); - case MOXA_FLUSH_QUEUE: - MoxaPortFlushData(port, arg); - return (0); - case MOXA_GET_IOQUEUE: { - struct moxaq_str __user *argm = argp; - struct moxaq_str tmp; - - for (i = 0; i < MAX_PORTS; i++, argm++) { - memset(&tmp, 0, sizeof(tmp)); - if (moxa_ports[i].chkPort) { - tmp.inq = MoxaPortRxQueue(i); - tmp.outq = MoxaPortTxQueue(i); - } - if (copy_to_user(argm, &tmp, sizeof(tmp))) - return -EFAULT; - } - return (0); - } case MOXA_GET_OQUEUE: - i = MoxaPortTxQueue(port); - return put_user(i, (unsigned long __user *)argp); - case MOXA_GET_IQUEUE: - i = MoxaPortRxQueue(port); - return put_user(i, (unsigned long __user *)argp); - case MOXA_GET_MAJOR: - if(copy_to_user(argp, &ttymajor, sizeof(int))) - return -EFAULT; - return 0; - case MOXA_GET_CUMAJOR: - i = 0; - if(copy_to_user(argp, &i, sizeof(int))) - return -EFAULT; - return 0; - case MOXA_GETMSTATUS: { - struct mxser_mstatus __user *argm = argp; - struct mxser_mstatus tmp; - struct moxa_port *p; - - for (i = 0; i < MAX_PORTS; i++, argm++) { - p = &moxa_ports[i]; - memset(&tmp, 0, sizeof(tmp)); - if (!p->chkPort) { - goto copy; - } else { - status = MoxaPortLineStatus(p->port); - if (status & 1) - tmp.cts = 1; - if (status & 2) - tmp.dsr = 1; - if (status & 4) - tmp.dcd = 1; - } - - if (!p->tty || !p->tty->termios) - tmp.cflag = p->cflag; - else - tmp.cflag = p->tty->termios->c_cflag; -copy: - if (copy_to_user(argm, &tmp, sizeof(tmp))) - return -EFAULT; - } - return 0; - } default: - return (-ENOIOCTLCMD); - case MOXA_LOAD_BIOS: - case MOXA_FIND_BOARD: - case MOXA_LOAD_C320B: - case MOXA_LOAD_CODE: - if (!capable(CAP_SYS_RAWIO)) - return -EPERM; - break; - } - - if(copy_from_user(&dltmp, argp, sizeof(struct dl_str))) - return -EFAULT; - if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS || dltmp.len < 0) - return -EINVAL; - - switch(cmd) - { - case MOXA_LOAD_BIOS: - i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len); - return (i); - case MOXA_FIND_BOARD: - return moxafindcard(dltmp.cardno); - case MOXA_LOAD_C320B: - moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len); - default: /* to keep gcc happy */ - return (0); - case MOXA_LOAD_CODE: - i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len); - if (i == -1) - return (-EFAULT); - return (i); - - } -} - -int MoxaDriverPoll(void) -{ - struct moxa_board_conf *brd; - register ushort temp; - register int card; - void __iomem *ofsAddr; - void __iomem *ip; - int port, p, ports; - - if (moxaCard == 0) - return (-1); - for (card = 0; card < MAX_BOARDS; card++) { - brd = &moxa_boards[card]; - if (brd->loadstat == 0) - continue; - if ((ports = brd->numPorts) == 0) - continue; - if (readb(brd->intPend) == 0xff) { - ip = brd->intTable + readb(brd->intNdx); - p = card * MAX_PORTS_PER_BOARD; - ports <<= 1; - for (port = 0; port < ports; port += 2, p++) { - if ((temp = readw(ip + port)) != 0) { - writew(0, ip + port); - ofsAddr = moxa_ports[p].tableAddr; - if (temp & IntrTx) - writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat); - if (temp & IntrBreak) { - moxa_ports[p].breakCnt++; - } - if (temp & IntrLine) { - if (readb(ofsAddr + FlagStat) & DCD_state) { - if ((moxa_ports[p].DCDState & DCD_oldstate) == 0) - moxa_ports[p].DCDState = (DCD_oldstate | - DCD_changed); - } else { - if (moxa_ports[p].DCDState & DCD_oldstate) - moxa_ports[p].DCDState = DCD_changed; - } - } - } - } - writeb(0, brd->intPend); - } - if (moxaLowWaterChk) { - p = card * MAX_PORTS_PER_BOARD; - for (port = 0; port < ports; port++, p++) { - if (moxa_ports[p].lowChkFlag) { - moxa_ports[p].lowChkFlag = 0; - ofsAddr = moxa_ports[p].tableAddr; - moxa_low_water_check(ofsAddr); - } - } - } - } - moxaLowWaterChk = 0; - return (0); -} - -/***************************************************************************** - * Card level function: * - * 1. MoxaPortsOfCard(int cardno); * - *****************************************************************************/ -int MoxaPortsOfCard(int cardno) -{ - - if (moxa_boards[cardno].boardType == 0) - return (0); - return (moxa_boards[cardno].numPorts); -} - -/***************************************************************************** - * Port level functions: * - * 1. MoxaPortIsValid(int port); * - * 2. MoxaPortEnable(int port); * - * 3. MoxaPortDisable(int port); * - * 4. MoxaPortGetMaxBaud(int port); * - * 6. MoxaPortSetBaud(int port, long baud); * - * 8. MoxaPortSetTermio(int port, unsigned char *termio); * - * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); * - * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); * - * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); * - * 12. MoxaPortLineStatus(int port); * - * 13. MoxaPortDCDChange(int port); * - * 14. MoxaPortDCDON(int port); * - * 15. MoxaPortFlushData(int port, int mode); * - * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); * - * 17. MoxaPortReadData(int port, struct tty_struct *tty); * - * 20. MoxaPortTxQueue(int port); * - * 21. MoxaPortTxFree(int port); * - * 22. MoxaPortRxQueue(int port); * - * 24. MoxaPortTxDisable(int port); * - * 25. MoxaPortTxEnable(int port); * - * 27. MoxaPortResetBrkCnt(int port); * - * 30. MoxaPortSendBreak(int port, int ticks); * - *****************************************************************************/ /* * Moxa Port Number Description: * @@ -1733,33 +1637,6 @@ int MoxaPortsOfCard(int cardno) * -ENOIOCTLCMD * * - * Function 3: Moxa driver polling process routine. - * Syntax: - * int MoxaDriverPoll(void); - * - * return: 0 ; polling O.K. - * -1 : no any Moxa card. - * - * - * Function 4: Get the ports of this card. - * Syntax: - * int MoxaPortsOfCard(int cardno); - * - * int cardno : card number (0 - 3) - * - * return: 0 : this card is invalid - * 8/16/24/32 - * - * - * Function 5: Check this port is valid or invalid - * Syntax: - * int MoxaPortIsValid(int port); - * int port : port number (0 - 127, ref port description) - * - * return: 0 : this port is invalid - * 1 : this port is valid - * - * * Function 6: Enable this port to start Tx/Rx data. * Syntax: * void MoxaPortEnable(int port); @@ -1772,18 +1649,9 @@ int MoxaPortsOfCard(int cardno) * int port : port number (0 - 127) * * - * Function 8: Get the maximun available baud rate of this port. - * Syntax: - * long MoxaPortGetMaxBaud(int port); - * int port : port number (0 - 127) - * - * return: 0 : this port is invalid - * 38400/57600/115200 bps - * - * * Function 10: Setting baud rate of this port. * Syntax: - * long MoxaPortSetBaud(int port, long baud); + * speed_t MoxaPortSetBaud(int port, speed_t baud); * int port : port number (0 - 127) * long baud : baud rate (50 - 115200) * @@ -1850,25 +1718,6 @@ int MoxaPortsOfCard(int cardno) * Bit 2 - DCD state (0: off, 1: on) * * - * Function 17: Check the DCD state has changed since the last read - * of this function. - * Syntax: - * int MoxaPortDCDChange(int port); - * int port : port number (0 - 127) - * - * return: 0 : no changed - * 1 : DCD has changed - * - * - * Function 18: Check ths current DCD state is ON or not. - * Syntax: - * int MoxaPortDCDON(int port); - * int port : port number (0 - 127) - * - * return: 0 : DCD off - * 1 : DCD on - * - * * Function 19: Flush the Rx/Tx buffer data of this port. * Syntax: * void MoxaPortFlushData(int port, int mode); @@ -1942,40 +1791,20 @@ int MoxaPortsOfCard(int cardno) * return: 0 - .. : BREAK signal count * * - * Function 34: Send out a BREAK signal. - * Syntax: - * void MoxaPortSendBreak(int port, int ms100); - * int port : port number (0 - 127) - * int ms100 : break signal time interval. - * unit: 100 mini-second. if ms100 == 0, it will - * send out a about 250 ms BREAK signal. - * */ -int MoxaPortIsValid(int port) -{ - - if (moxaCard == 0) - return (0); - if (moxa_ports[port].chkPort == 0) - return (0); - return (1); -} -void MoxaPortEnable(int port) +static void MoxaPortEnable(struct moxa_port *port) { void __iomem *ofsAddr; - int MoxaPortLineStatus(int); - short lowwater = 512; + u16 lowwater = 512; - ofsAddr = moxa_ports[port].tableAddr; + ofsAddr = port->tableAddr; writew(lowwater, ofsAddr + Low_water); - moxa_ports[port].breakCnt = 0; - if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) || - (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) { + if (MOXA_IS_320(port->board)) moxafunc(ofsAddr, FC_SetBreakIrq, 0); - } else { - writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat); - } + else + writew(readw(ofsAddr + HostStat) | WakeupBreak, + ofsAddr + HostStat); moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); moxafunc(ofsAddr, FC_FlushQueue, 2); @@ -1984,9 +1813,9 @@ void MoxaPortEnable(int port) MoxaPortLineStatus(port); } -void MoxaPortDisable(int port) +static void MoxaPortDisable(struct moxa_port *port) { - void __iomem *ofsAddr = moxa_ports[port].tableAddr; + void __iomem *ofsAddr = port->tableAddr; moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); @@ -1994,49 +1823,32 @@ void MoxaPortDisable(int port) moxafunc(ofsAddr, FC_DisableCH, Magic_code); } -long MoxaPortGetMaxBaud(int port) -{ - if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) || - (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) - return (460800L); - else - return (921600L); -} - - -long MoxaPortSetBaud(int port, long baud) +static speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) { - void __iomem *ofsAddr; - long max, clock; - unsigned int val; + void __iomem *ofsAddr = port->tableAddr; + unsigned int clock, val; + speed_t max; - if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0)) - return (0); - ofsAddr = moxa_ports[port].tableAddr; + max = MOXA_IS_320(port->board) ? 460800 : 921600; + if (baud < 50) + return 0; if (baud > max) baud = max; - if (max == 38400L) - clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */ - else if (max == 57600L) - clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */ - else - clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */ + clock = 921600; val = clock / baud; moxafunc(ofsAddr, FC_SetBaud, val); baud = clock / val; - moxa_ports[port].curBaud = baud; - return (baud); + return baud; } -int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud) +static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, + speed_t baud) { void __iomem *ofsAddr; tcflag_t cflag; tcflag_t mode = 0; - if (moxa_ports[port].chkPort == 0 || termio == 0) - return (-1); - ofsAddr = moxa_ports[port].tableAddr; + ofsAddr = port->tableAddr; cflag = termio->c_cflag; /* termio->c_cflag */ mode = termio->c_cflag & CSIZE; @@ -2065,13 +1877,11 @@ int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud) } else mode |= MX_PARNONE; - moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode); + moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); + + if (MOXA_IS_320(port->board) && baud >= 921600) + return -1; - if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) || - (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) { - if (baud >= 921600L) - return (-1); - } baud = MoxaPortSetBaud(port, baud); if (termio->c_iflag & (IXON | IXOFF | IXANY)) { @@ -2081,51 +1891,37 @@ int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud) moxa_wait_finish(ofsAddr); } - return (baud); + return baud; } -int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState) +static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, + int *rtsState) { + if (dtrState) + *dtrState = !!(port->lineCtrl & DTR_ON); + if (rtsState) + *rtsState = !!(port->lineCtrl & RTS_ON); - if (!MoxaPortIsValid(port)) - return (-1); - if (dtrState) { - if (moxa_ports[port].lineCtrl & DTR_ON) - *dtrState = 1; - else - *dtrState = 0; - } - if (rtsState) { - if (moxa_ports[port].lineCtrl & RTS_ON) - *rtsState = 1; - else - *rtsState = 0; - } - return (0); + return 0; } -void MoxaPortLineCtrl(int port, int dtr, int rts) +static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) { - void __iomem *ofsAddr; - int mode; + u8 mode = 0; - ofsAddr = moxa_ports[port].tableAddr; - mode = 0; if (dtr) mode |= DTR_ON; if (rts) mode |= RTS_ON; - moxa_ports[port].lineCtrl = mode; - moxafunc(ofsAddr, FC_LineControl, mode); + port->lineCtrl = mode; + moxafunc(port->tableAddr, FC_LineControl, mode); } -void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany) +static void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, + int txflow, int rxflow, int txany) { - void __iomem *ofsAddr; - int mode; + int mode = 0; - ofsAddr = moxa_ports[port].tableAddr; - mode = 0; if (rts) mode |= RTS_FlowCtl; if (cts) @@ -2136,81 +1932,50 @@ void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int tx mode |= Rx_FlowCtl; if (txany) mode |= IXM_IXANY; - moxafunc(ofsAddr, FC_SetFlowCtl, mode); + moxafunc(port->tableAddr, FC_SetFlowCtl, mode); } -int MoxaPortLineStatus(int port) +static int MoxaPortLineStatus(struct moxa_port *port) { void __iomem *ofsAddr; int val; - ofsAddr = moxa_ports[port].tableAddr; - if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) || - (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) { + ofsAddr = port->tableAddr; + if (MOXA_IS_320(port->board)) { moxafunc(ofsAddr, FC_LineStatus, 0); val = readw(ofsAddr + FuncArg); } else { val = readw(ofsAddr + FlagStat) >> 4; } val &= 0x0B; - if (val & 8) { + if (val & 8) val |= 4; - if ((moxa_ports[port].DCDState & DCD_oldstate) == 0) - moxa_ports[port].DCDState = (DCD_oldstate | DCD_changed); - } else { - if (moxa_ports[port].DCDState & DCD_oldstate) - moxa_ports[port].DCDState = DCD_changed; - } + spin_lock_bh(&moxa_lock); + moxa_new_dcdstate(port, val & 8); + spin_unlock_bh(&moxa_lock); val &= 7; - return (val); -} - -int MoxaPortDCDChange(int port) -{ - int n; - - if (moxa_ports[port].chkPort == 0) - return (0); - n = moxa_ports[port].DCDState; - moxa_ports[port].DCDState &= ~DCD_changed; - n &= DCD_changed; - return (n); -} - -int MoxaPortDCDON(int port) -{ - int n; - - if (moxa_ports[port].chkPort == 0) - return (0); - if (moxa_ports[port].DCDState & DCD_oldstate) - n = 1; - else - n = 0; - return (n); + return val; } -int MoxaPortWriteData(int port, unsigned char * buffer, int len) +static int MoxaPortWriteData(struct moxa_port *port, + const unsigned char *buffer, int len) { - int c, total, i; - ushort tail; - int cnt; - ushort head, tx_mask, spage, epage; - ushort pageno, pageofs, bufhead; void __iomem *baseAddr, *ofsAddr, *ofs; + unsigned int c, total; + u16 head, tail, tx_mask, spage, epage; + u16 pageno, pageofs, bufhead; - ofsAddr = moxa_ports[port].tableAddr; - baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem; + ofsAddr = port->tableAddr; + baseAddr = port->board->basemem; tx_mask = readw(ofsAddr + TX_mask); spage = readw(ofsAddr + Page_txb); epage = readw(ofsAddr + EndPage_txb); tail = readw(ofsAddr + TXwptr); head = readw(ofsAddr + TXrptr); - c = (head > tail) ? (head - tail - 1) - : (head - tail + tx_mask); + c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); if (c > len) c = len; - moxaLog.txcnt[port] += c; + moxaLog.txcnt[port->tty->index] += c; total = c; if (spage == epage) { bufhead = readw(ofsAddr + Ofs_txb); @@ -2222,249 +1987,179 @@ int MoxaPortWriteData(int port, unsigned char * buffer, int len) len = tx_mask + 1 - tail; len = (c > len) ? len : c; ofs = baseAddr + DynPage_addr + bufhead + tail; - for (i = 0; i < len; i++) - writeb(*buffer++, ofs + i); + memcpy_toio(ofs, buffer, len); + buffer += len; tail = (tail + len) & tx_mask; c -= len; } - writew(tail, ofsAddr + TXwptr); } else { - len = c; pageno = spage + (tail >> 13); pageofs = tail & Page_mask; - do { - cnt = Page_size - pageofs; - if (cnt > c) - cnt = c; - c -= cnt; + while (c > 0) { + len = Page_size - pageofs; + if (len > c) + len = c; writeb(pageno, baseAddr + Control_reg); ofs = baseAddr + DynPage_addr + pageofs; - for (i = 0; i < cnt; i++) - writeb(*buffer++, ofs + i); - if (c == 0) { - writew((tail + len) & tx_mask, ofsAddr + TXwptr); - break; - } + memcpy_toio(ofs, buffer, len); + buffer += len; if (++pageno == epage) pageno = spage; pageofs = 0; - } while (1); + c -= len; + } + tail = (tail + total) & tx_mask; } + writew(tail, ofsAddr + TXwptr); writeb(1, ofsAddr + CD180TXirq); /* start to send */ - return (total); + return total; } -int MoxaPortReadData(int port, struct tty_struct *tty) +static int MoxaPortReadData(struct moxa_port *port) { - register ushort head, pageofs; - int i, count, cnt, len, total, remain; - ushort tail, rx_mask, spage, epage; - ushort pageno, bufhead; + struct tty_struct *tty = port->tty; + unsigned char *dst; void __iomem *baseAddr, *ofsAddr, *ofs; + unsigned int count, len, total; + u16 tail, rx_mask, spage, epage; + u16 pageno, pageofs, bufhead, head; - ofsAddr = moxa_ports[port].tableAddr; - baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem; + ofsAddr = port->tableAddr; + baseAddr = port->board->basemem; head = readw(ofsAddr + RXrptr); tail = readw(ofsAddr + RXwptr); rx_mask = readw(ofsAddr + RX_mask); spage = readw(ofsAddr + Page_rxb); epage = readw(ofsAddr + EndPage_rxb); - count = (tail >= head) ? (tail - head) - : (tail - head + rx_mask + 1); + count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); if (count == 0) return 0; total = count; - remain = count - total; - moxaLog.rxcnt[port] += total; - count = total; + moxaLog.rxcnt[tty->index] += total; if (spage == epage) { bufhead = readw(ofsAddr + Ofs_rxb); writew(spage, baseAddr + Control_reg); while (count > 0) { - if (tail >= head) - len = tail - head; - else - len = rx_mask + 1 - head; - len = (count > len) ? len : count; ofs = baseAddr + DynPage_addr + bufhead + head; - for (i = 0; i < len; i++) - tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL); + len = (tail >= head) ? (tail - head) : + (rx_mask + 1 - head); + len = tty_prepare_flip_string(tty, &dst, + min(len, count)); + memcpy_fromio(dst, ofs, len); head = (head + len) & rx_mask; count -= len; } - writew(head, ofsAddr + RXrptr); } else { - len = count; pageno = spage + (head >> 13); pageofs = head & Page_mask; - do { - cnt = Page_size - pageofs; - if (cnt > count) - cnt = count; - count -= cnt; + while (count > 0) { writew(pageno, baseAddr + Control_reg); ofs = baseAddr + DynPage_addr + pageofs; - for (i = 0; i < cnt; i++) - tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL); - if (count == 0) { - writew((head + len) & rx_mask, ofsAddr + RXrptr); - break; - } - if (++pageno == epage) + len = tty_prepare_flip_string(tty, &dst, + min(Page_size - pageofs, count)); + memcpy_fromio(dst, ofs, len); + + count -= len; + pageofs = (pageofs + len) & Page_mask; + if (pageofs == 0 && ++pageno == epage) pageno = spage; - pageofs = 0; - } while (1); + } + head = (head + total) & rx_mask; } - if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) { + writew(head, ofsAddr + RXrptr); + if (readb(ofsAddr + FlagStat) & Xoff_state) { moxaLowWaterChk = 1; - moxa_ports[port].lowChkFlag = 1; + port->lowChkFlag = 1; } - return (total); + return total; } -int MoxaPortTxQueue(int port) +static int MoxaPortTxQueue(struct moxa_port *port) { - void __iomem *ofsAddr; - ushort rptr, wptr, mask; - int len; + void __iomem *ofsAddr = port->tableAddr; + u16 rptr, wptr, mask; - ofsAddr = moxa_ports[port].tableAddr; rptr = readw(ofsAddr + TXrptr); wptr = readw(ofsAddr + TXwptr); mask = readw(ofsAddr + TX_mask); - len = (wptr - rptr) & mask; - return (len); + return (wptr - rptr) & mask; } -int MoxaPortTxFree(int port) +static int MoxaPortTxFree(struct moxa_port *port) { - void __iomem *ofsAddr; - ushort rptr, wptr, mask; - int len; + void __iomem *ofsAddr = port->tableAddr; + u16 rptr, wptr, mask; - ofsAddr = moxa_ports[port].tableAddr; rptr = readw(ofsAddr + TXrptr); wptr = readw(ofsAddr + TXwptr); mask = readw(ofsAddr + TX_mask); - len = mask - ((wptr - rptr) & mask); - return (len); + return mask - ((wptr - rptr) & mask); } -int MoxaPortRxQueue(int port) +static int MoxaPortRxQueue(struct moxa_port *port) { - void __iomem *ofsAddr; - ushort rptr, wptr, mask; - int len; + void __iomem *ofsAddr = port->tableAddr; + u16 rptr, wptr, mask; - ofsAddr = moxa_ports[port].tableAddr; rptr = readw(ofsAddr + RXrptr); wptr = readw(ofsAddr + RXwptr); mask = readw(ofsAddr + RX_mask); - len = (wptr - rptr) & mask; - return (len); + return (wptr - rptr) & mask; } - -void MoxaPortTxDisable(int port) +static void MoxaPortTxDisable(struct moxa_port *port) { - void __iomem *ofsAddr; - - ofsAddr = moxa_ports[port].tableAddr; - moxafunc(ofsAddr, FC_SetXoffState, Magic_code); + moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); } -void MoxaPortTxEnable(int port) +static void MoxaPortTxEnable(struct moxa_port *port) { - void __iomem *ofsAddr; - - ofsAddr = moxa_ports[port].tableAddr; - moxafunc(ofsAddr, FC_SetXonState, Magic_code); -} - - -int MoxaPortResetBrkCnt(int port) -{ - ushort cnt; - cnt = moxa_ports[port].breakCnt; - moxa_ports[port].breakCnt = 0; - return (cnt); -} - - -void MoxaPortSendBreak(int port, int ms100) -{ - void __iomem *ofsAddr; - - ofsAddr = moxa_ports[port].tableAddr; - if (ms100) { - moxafunc(ofsAddr, FC_SendBreak, Magic_code); - msleep(ms100 * 10); - } else { - moxafunc(ofsAddr, FC_SendBreak, Magic_code); - msleep(250); - } - moxafunc(ofsAddr, FC_StopBreak, Magic_code); + moxafunc(port->tableAddr, FC_SetXonState, Magic_code); } static int moxa_get_serial_info(struct moxa_port *info, - struct serial_struct __user *retinfo) + struct serial_struct __user *retinfo) { - struct serial_struct tmp; - - memset(&tmp, 0, sizeof(tmp)); - tmp.type = info->type; - tmp.line = info->port; - tmp.port = 0; - tmp.irq = 0; - tmp.flags = info->asyncflags; - tmp.baud_base = 921600; - tmp.close_delay = info->close_delay; - tmp.closing_wait = info->closing_wait; - tmp.custom_divisor = 0; - tmp.hub6 = 0; - if(copy_to_user(retinfo, &tmp, sizeof(*retinfo))) - return -EFAULT; - return (0); + struct serial_struct tmp = { + .type = info->type, + .line = info->tty->index, + .flags = info->asyncflags, + .baud_base = 921600, + .close_delay = info->close_delay + }; + return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; } static int moxa_set_serial_info(struct moxa_port *info, - struct serial_struct __user *new_info) + struct serial_struct __user *new_info) { struct serial_struct new_serial; - if(copy_from_user(&new_serial, new_info, sizeof(new_serial))) + if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) return -EFAULT; - if ((new_serial.irq != 0) || - (new_serial.port != 0) || -// (new_serial.type != info->type) || - (new_serial.custom_divisor != 0) || - (new_serial.baud_base != 921600)) - return (-EPERM); + if (new_serial.irq != 0 || new_serial.port != 0 || + new_serial.custom_divisor != 0 || + new_serial.baud_base != 921600) + return -EPERM; if (!capable(CAP_SYS_ADMIN)) { if (((new_serial.flags & ~ASYNC_USR_MASK) != (info->asyncflags & ~ASYNC_USR_MASK))) - return (-EPERM); - } else { + return -EPERM; + } else info->close_delay = new_serial.close_delay * HZ / 100; - info->closing_wait = new_serial.closing_wait * HZ / 100; - } new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); new_serial.flags |= (info->asyncflags & ASYNC_FLAGS); - if (new_serial.type == PORT_16550A) { - MoxaSetFifo(info->port, 1); - } else { - MoxaSetFifo(info->port, 0); - } + MoxaSetFifo(info, new_serial.type == PORT_16550A); info->type = new_serial.type; - return (0); + return 0; } @@ -2472,374 +2167,10 @@ static int moxa_set_serial_info(struct moxa_port *info, /***************************************************************************** * Static local functions: * *****************************************************************************/ -static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg) -{ - - writew(arg, ofsAddr + FuncArg); - writew(cmd, ofsAddr + FuncCode); - moxa_wait_finish(ofsAddr); -} - -static void moxa_wait_finish(void __iomem *ofsAddr) -{ - unsigned long i, j; - - i = jiffies; - while (readw(ofsAddr + FuncCode) != 0) { - j = jiffies; - if ((j - i) > moxaFuncTout) { - return; - } - } -} - -static void moxa_low_water_check(void __iomem *ofsAddr) -{ - int len; - ushort rptr, wptr, mask; - - if (readb(ofsAddr + FlagStat) & Xoff_state) { - rptr = readw(ofsAddr + RXrptr); - wptr = readw(ofsAddr + RXwptr); - mask = readw(ofsAddr + RX_mask); - len = (wptr - rptr) & mask; - if (len <= Low_water) - moxafunc(ofsAddr, FC_SendXon, 0); - } -} - -static int moxaloadbios(int cardno, unsigned char __user *tmp, int len) -{ - void __iomem *baseAddr; - int i; - - if(len < 0 || len > sizeof(moxaBuff)) - return -EINVAL; - if(copy_from_user(moxaBuff, tmp, len)) - return -EFAULT; - baseAddr = moxa_boards[cardno].basemem; - writeb(HW_reset, baseAddr + Control_reg); /* reset */ - msleep(10); - for (i = 0; i < 4096; i++) - writeb(0, baseAddr + i); /* clear fix page */ - for (i = 0; i < len; i++) - writeb(moxaBuff[i], baseAddr + i); /* download BIOS */ - writeb(0, baseAddr + Control_reg); /* restart */ - return (0); -} - -static int moxafindcard(int cardno) -{ - void __iomem *baseAddr; - ushort tmp; - - baseAddr = moxa_boards[cardno].basemem; - switch (moxa_boards[cardno].boardType) { - case MOXA_BOARD_C218_ISA: - case MOXA_BOARD_C218_PCI: - if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) { - return (-1); - } - break; - case MOXA_BOARD_CP204J: - if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) { - return (-1); - } - break; - default: - if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) { - return (-1); - } - if ((tmp = readw(baseAddr + C320_status)) != STS_init) { - return (-2); - } - } - return (0); -} - -static int moxaload320b(int cardno, unsigned char __user *tmp, int len) -{ - void __iomem *baseAddr; - int i; - - if(len < 0 || len > sizeof(moxaBuff)) - return -EINVAL; - if(copy_from_user(moxaBuff, tmp, len)) - return -EFAULT; - baseAddr = moxa_boards[cardno].basemem; - writew(len - 7168 - 2, baseAddr + C320bapi_len); - writeb(1, baseAddr + Control_reg); /* Select Page 1 */ - for (i = 0; i < 7168; i++) - writeb(moxaBuff[i], baseAddr + DynPage_addr + i); - writeb(2, baseAddr + Control_reg); /* Select Page 2 */ - for (i = 0; i < (len - 7168); i++) - writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i); - return (0); -} - -static int moxaloadcode(int cardno, unsigned char __user *tmp, int len) -{ - void __iomem *baseAddr, *ofsAddr; - int retval, port, i; - - if(len < 0 || len > sizeof(moxaBuff)) - return -EINVAL; - if(copy_from_user(moxaBuff, tmp, len)) - return -EFAULT; - baseAddr = moxa_boards[cardno].basemem; - switch (moxa_boards[cardno].boardType) { - case MOXA_BOARD_C218_ISA: - case MOXA_BOARD_C218_PCI: - case MOXA_BOARD_CP204J: - retval = moxaloadc218(cardno, baseAddr, len); - if (retval) - return (retval); - port = cardno * MAX_PORTS_PER_BOARD; - for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) { - struct moxa_port *p = &moxa_ports[port]; - - p->chkPort = 1; - p->curBaud = 9600L; - p->DCDState = 0; - p->tableAddr = baseAddr + Extern_table + Extern_size * i; - ofsAddr = p->tableAddr; - writew(C218rx_mask, ofsAddr + RX_mask); - writew(C218tx_mask, ofsAddr + TX_mask); - writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); - writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); - - writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); - writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); - - } - break; - default: - retval = moxaloadc320(cardno, baseAddr, len, - &moxa_boards[cardno].numPorts); - if (retval) - return (retval); - port = cardno * MAX_PORTS_PER_BOARD; - for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) { - struct moxa_port *p = &moxa_ports[port]; - - p->chkPort = 1; - p->curBaud = 9600L; - p->DCDState = 0; - p->tableAddr = baseAddr + Extern_table + Extern_size * i; - ofsAddr = p->tableAddr; - if (moxa_boards[cardno].numPorts == 8) { - writew(C320p8rx_mask, ofsAddr + RX_mask); - writew(C320p8tx_mask, ofsAddr + TX_mask); - writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); - writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); - writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); - writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); - - } else if (moxa_boards[cardno].numPorts == 16) { - writew(C320p16rx_mask, ofsAddr + RX_mask); - writew(C320p16tx_mask, ofsAddr + TX_mask); - writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); - writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); - writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); - writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); - - } else if (moxa_boards[cardno].numPorts == 24) { - writew(C320p24rx_mask, ofsAddr + RX_mask); - writew(C320p24tx_mask, ofsAddr + TX_mask); - writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); - writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); - writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); - writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); - } else if (moxa_boards[cardno].numPorts == 32) { - writew(C320p32rx_mask, ofsAddr + RX_mask); - writew(C320p32tx_mask, ofsAddr + TX_mask); - writew(C320p32tx_ofs, ofsAddr + Ofs_txb); - writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); - writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); - writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); - writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); - } - } - break; - } - moxa_boards[cardno].loadstat = 1; - return (0); -} - -static int moxaloadc218(int cardno, void __iomem *baseAddr, int len) -{ - char retry; - int i, j, len1, len2; - ushort usum, *ptr, keycode; - - if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J) - keycode = CP204J_KeyCode; - else - keycode = C218_KeyCode; - usum = 0; - len1 = len >> 1; - ptr = (ushort *) moxaBuff; - for (i = 0; i < len1; i++) - usum += le16_to_cpu(*(ptr + i)); - retry = 0; - do { - len1 = len >> 1; - j = 0; - while (len1) { - len2 = (len1 > 2048) ? 2048 : len1; - len1 -= len2; - for (i = 0; i < len2 << 1; i++) - writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i); - j += i; - - writew(len2, baseAddr + C218DLoad_len); - writew(0, baseAddr + C218_key); - for (i = 0; i < 100; i++) { - if (readw(baseAddr + C218_key) == keycode) - break; - msleep(10); - } - if (readw(baseAddr + C218_key) != keycode) { - return (-1); - } - } - writew(0, baseAddr + C218DLoad_len); - writew(usum, baseAddr + C218check_sum); - writew(0, baseAddr + C218_key); - for (i = 0; i < 100; i++) { - if (readw(baseAddr + C218_key) == keycode) - break; - msleep(10); - } - retry++; - } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3)); - if (readb(baseAddr + C218chksum_ok) != 1) { - return (-1); - } - writew(0, baseAddr + C218_key); - for (i = 0; i < 100; i++) { - if (readw(baseAddr + Magic_no) == Magic_code) - break; - msleep(10); - } - if (readw(baseAddr + Magic_no) != Magic_code) { - return (-1); - } - writew(1, baseAddr + Disable_IRQ); - writew(0, baseAddr + Magic_no); - for (i = 0; i < 100; i++) { - if (readw(baseAddr + Magic_no) == Magic_code) - break; - msleep(10); - } - if (readw(baseAddr + Magic_no) != Magic_code) { - return (-1); - } - moxaCard = 1; - moxa_boards[cardno].intNdx = baseAddr + IRQindex; - moxa_boards[cardno].intPend = baseAddr + IRQpending; - moxa_boards[cardno].intTable = baseAddr + IRQtable; - return (0); -} - -static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts) -{ - ushort usum; - int i, j, wlen, len2, retry; - ushort *uptr; - - usum = 0; - wlen = len >> 1; - uptr = (ushort *) moxaBuff; - for (i = 0; i < wlen; i++) - usum += le16_to_cpu(uptr[i]); - retry = 0; - j = 0; - do { - while (wlen) { - if (wlen > 2048) - len2 = 2048; - else - len2 = wlen; - wlen -= len2; - len2 <<= 1; - for (i = 0; i < len2; i++) - writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i); - len2 >>= 1; - j += i; - writew(len2, baseAddr + C320DLoad_len); - writew(0, baseAddr + C320_key); - for (i = 0; i < 10; i++) { - if (readw(baseAddr + C320_key) == C320_KeyCode) - break; - msleep(10); - } - if (readw(baseAddr + C320_key) != C320_KeyCode) - return (-1); - } - writew(0, baseAddr + C320DLoad_len); - writew(usum, baseAddr + C320check_sum); - writew(0, baseAddr + C320_key); - for (i = 0; i < 10; i++) { - if (readw(baseAddr + C320_key) == C320_KeyCode) - break; - msleep(10); - } - retry++; - } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3)); - if (readb(baseAddr + C320chksum_ok) != 1) - return (-1); - writew(0, baseAddr + C320_key); - for (i = 0; i < 600; i++) { - if (readw(baseAddr + Magic_no) == Magic_code) - break; - msleep(10); - } - if (readw(baseAddr + Magic_no) != Magic_code) - return (-100); - - if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ - writew(0x3800, baseAddr + TMS320_PORT1); - writew(0x3900, baseAddr + TMS320_PORT2); - writew(28499, baseAddr + TMS320_CLOCK); - } else { - writew(0x3200, baseAddr + TMS320_PORT1); - writew(0x3400, baseAddr + TMS320_PORT2); - writew(19999, baseAddr + TMS320_CLOCK); - } - writew(1, baseAddr + Disable_IRQ); - writew(0, baseAddr + Magic_no); - for (i = 0; i < 500; i++) { - if (readw(baseAddr + Magic_no) == Magic_code) - break; - msleep(10); - } - if (readw(baseAddr + Magic_no) != Magic_code) - return (-102); - - j = readw(baseAddr + Module_cnt); - if (j <= 0) - return (-101); - *numPorts = j * 8; - writew(j, baseAddr + Module_no); - writew(0, baseAddr + Magic_no); - for (i = 0; i < 600; i++) { - if (readw(baseAddr + Magic_no) == Magic_code) - break; - msleep(10); - } - if (readw(baseAddr + Magic_no) != Magic_code) - return (-102); - moxaCard = 1; - moxa_boards[cardno].intNdx = baseAddr + IRQindex; - moxa_boards[cardno].intPend = baseAddr + IRQpending; - moxa_boards[cardno].intTable = baseAddr + IRQtable; - return (0); -} -static void MoxaSetFifo(int port, int enable) +static void MoxaSetFifo(struct moxa_port *port, int enable) { - void __iomem *ofsAddr = moxa_ports[port].tableAddr; + void __iomem *ofsAddr = port->tableAddr; if (!enable) { moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); diff --git a/drivers/char/moxa.h b/drivers/char/moxa.h new file mode 100644 index 00000000000..87d16ce57be --- /dev/null +++ b/drivers/char/moxa.h @@ -0,0 +1,304 @@ +#ifndef MOXA_H_FILE +#define MOXA_H_FILE + +#define MOXA 0x400 +#define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */ +#define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */ +#define MOXA_GETDATACOUNT (MOXA + 23) +#define MOXA_GET_IOQUEUE (MOXA + 27) +#define MOXA_FLUSH_QUEUE (MOXA + 28) +#define MOXA_GETMSTATUS (MOXA + 65) + +/* + * System Configuration + */ + +#define Magic_code 0x404 + +/* + * for C218 BIOS initialization + */ +#define C218_ConfBase 0x800 +#define C218_status (C218_ConfBase + 0) /* BIOS running status */ +#define C218_diag (C218_ConfBase + 2) /* diagnostic status */ +#define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */ +#define C218DLoad_len (C218_ConfBase + 6) /* WORD */ +#define C218check_sum (C218_ConfBase + 8) /* BYTE */ +#define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */ +#define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */ +#define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */ +#define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */ +#define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */ + +#define C218_LoadBuf 0x0F00 +#define C218_KeyCode 0x218 +#define CP204J_KeyCode 0x204 + +/* + * for C320 BIOS initialization + */ +#define C320_ConfBase 0x800 +#define C320_LoadBuf 0x0f00 +#define STS_init 0x05 /* for C320_status */ + +#define C320_status C320_ConfBase + 0 /* BIOS running status */ +#define C320_diag C320_ConfBase + 2 /* diagnostic status */ +#define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */ +#define C320DLoad_len C320_ConfBase + 6 /* WORD */ +#define C320check_sum C320_ConfBase + 8 /* WORD */ +#define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */ +#define C320bapi_len C320_ConfBase + 0x0c /* WORD */ +#define C320UART_no C320_ConfBase + 0x0e /* WORD */ + +#define C320_KeyCode 0x320 + +#define FixPage_addr 0x0000 /* starting addr of static page */ +#define DynPage_addr 0x2000 /* starting addr of dynamic page */ +#define C218_start 0x3000 /* starting addr of C218 BIOS prg */ +#define Control_reg 0x1ff0 /* select page and reset control */ +#define HW_reset 0x80 + +/* + * Function Codes + */ +#define FC_CardReset 0x80 +#define FC_ChannelReset 1 /* C320 firmware not supported */ +#define FC_EnableCH 2 +#define FC_DisableCH 3 +#define FC_SetParam 4 +#define FC_SetMode 5 +#define FC_SetRate 6 +#define FC_LineControl 7 +#define FC_LineStatus 8 +#define FC_XmitControl 9 +#define FC_FlushQueue 10 +#define FC_SendBreak 11 +#define FC_StopBreak 12 +#define FC_LoopbackON 13 +#define FC_LoopbackOFF 14 +#define FC_ClrIrqTable 15 +#define FC_SendXon 16 +#define FC_SetTermIrq 17 /* C320 firmware not supported */ +#define FC_SetCntIrq 18 /* C320 firmware not supported */ +#define FC_SetBreakIrq 19 +#define FC_SetLineIrq 20 +#define FC_SetFlowCtl 21 +#define FC_GenIrq 22 +#define FC_InCD180 23 +#define FC_OutCD180 24 +#define FC_InUARTreg 23 +#define FC_OutUARTreg 24 +#define FC_SetXonXoff 25 +#define FC_OutCD180CCR 26 +#define FC_ExtIQueue 27 +#define FC_ExtOQueue 28 +#define FC_ClrLineIrq 29 +#define FC_HWFlowCtl 30 +#define FC_GetClockRate 35 +#define FC_SetBaud 36 +#define FC_SetDataMode 41 +#define FC_GetCCSR 43 +#define FC_GetDataError 45 +#define FC_RxControl 50 +#define FC_ImmSend 51 +#define FC_SetXonState 52 +#define FC_SetXoffState 53 +#define FC_SetRxFIFOTrig 54 +#define FC_SetTxFIFOCnt 55 +#define FC_UnixRate 56 +#define FC_UnixResetTimer 57 + +#define RxFIFOTrig1 0 +#define RxFIFOTrig4 1 +#define RxFIFOTrig8 2 +#define RxFIFOTrig14 3 + +/* + * Dual-Ported RAM + */ +#define DRAM_global 0 +#define INT_data (DRAM_global + 0) +#define Config_base (DRAM_global + 0x108) + +#define IRQindex (INT_data + 0) +#define IRQpending (INT_data + 4) +#define IRQtable (INT_data + 8) + +/* + * Interrupt Status + */ +#define IntrRx 0x01 /* receiver data O.K. */ +#define IntrTx 0x02 /* transmit buffer empty */ +#define IntrFunc 0x04 /* function complete */ +#define IntrBreak 0x08 /* received break */ +#define IntrLine 0x10 /* line status change + for transmitter */ +#define IntrIntr 0x20 /* received INTR code */ +#define IntrQuit 0x40 /* received QUIT code */ +#define IntrEOF 0x80 /* received EOF code */ + +#define IntrRxTrigger 0x100 /* rx data count reach tigger value */ +#define IntrTxTrigger 0x200 /* tx data count below trigger value */ + +#define Magic_no (Config_base + 0) +#define Card_model_no (Config_base + 2) +#define Total_ports (Config_base + 4) +#define Module_cnt (Config_base + 8) +#define Module_no (Config_base + 10) +#define Timer_10ms (Config_base + 14) +#define Disable_IRQ (Config_base + 20) +#define TMS320_PORT1 (Config_base + 22) +#define TMS320_PORT2 (Config_base + 24) +#define TMS320_CLOCK (Config_base + 26) + +/* + * DATA BUFFER in DRAM + */ +#define Extern_table 0x400 /* Base address of the external table + (24 words * 64) total 3K bytes + (24 words * 128) total 6K bytes */ +#define Extern_size 0x60 /* 96 bytes */ +#define RXrptr 0x00 /* read pointer for RX buffer */ +#define RXwptr 0x02 /* write pointer for RX buffer */ +#define TXrptr 0x04 /* read pointer for TX buffer */ +#define TXwptr 0x06 /* write pointer for TX buffer */ +#define HostStat 0x08 /* IRQ flag and general flag */ +#define FlagStat 0x0A +#define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */ + /* x x x x | | | | */ + /* | | | + CTS flow */ + /* | | +--- RTS flow */ + /* | +------ TX Xon/Xoff */ + /* +--------- RX Xon/Xoff */ +#define Break_cnt 0x0E /* received break count */ +#define CD180TXirq 0x10 /* if non-0: enable TX irq */ +#define RX_mask 0x12 +#define TX_mask 0x14 +#define Ofs_rxb 0x16 +#define Ofs_txb 0x18 +#define Page_rxb 0x1A +#define Page_txb 0x1C +#define EndPage_rxb 0x1E +#define EndPage_txb 0x20 +#define Data_error 0x22 +#define RxTrigger 0x28 +#define TxTrigger 0x2a + +#define rRXwptr 0x34 +#define Low_water 0x36 + +#define FuncCode 0x40 +#define FuncArg 0x42 +#define FuncArg1 0x44 + +#define C218rx_size 0x2000 /* 8K bytes */ +#define C218tx_size 0x8000 /* 32K bytes */ + +#define C218rx_mask (C218rx_size - 1) +#define C218tx_mask (C218tx_size - 1) + +#define C320p8rx_size 0x2000 +#define C320p8tx_size 0x8000 +#define C320p8rx_mask (C320p8rx_size - 1) +#define C320p8tx_mask (C320p8tx_size - 1) + +#define C320p16rx_size 0x2000 +#define C320p16tx_size 0x4000 +#define C320p16rx_mask (C320p16rx_size - 1) +#define C320p16tx_mask (C320p16tx_size - 1) + +#define C320p24rx_size 0x2000 +#define C320p24tx_size 0x2000 +#define C320p24rx_mask (C320p24rx_size - 1) +#define C320p24tx_mask (C320p24tx_size - 1) + +#define C320p32rx_size 0x1000 +#define C320p32tx_size 0x1000 +#define C320p32rx_mask (C320p32rx_size - 1) +#define C320p32tx_mask (C320p32tx_size - 1) + +#define Page_size 0x2000U +#define Page_mask (Page_size - 1) +#define C218rx_spage 3 +#define C218tx_spage 4 +#define C218rx_pageno 1 +#define C218tx_pageno 4 +#define C218buf_pageno 5 + +#define C320p8rx_spage 3 +#define C320p8tx_spage 4 +#define C320p8rx_pgno 1 +#define C320p8tx_pgno 4 +#define C320p8buf_pgno 5 + +#define C320p16rx_spage 3 +#define C320p16tx_spage 4 +#define C320p16rx_pgno 1 +#define C320p16tx_pgno 2 +#define C320p16buf_pgno 3 + +#define C320p24rx_spage 3 +#define C320p24tx_spage 4 +#define C320p24rx_pgno 1 +#define C320p24tx_pgno 1 +#define C320p24buf_pgno 2 + +#define C320p32rx_spage 3 +#define C320p32tx_ofs C320p32rx_size +#define C320p32tx_spage 3 +#define C320p32buf_pgno 1 + +/* + * Host Status + */ +#define WakeupRx 0x01 +#define WakeupTx 0x02 +#define WakeupBreak 0x08 +#define WakeupLine 0x10 +#define WakeupIntr 0x20 +#define WakeupQuit 0x40 +#define WakeupEOF 0x80 /* used in VTIME control */ +#define WakeupRxTrigger 0x100 +#define WakeupTxTrigger 0x200 +/* + * Flag status + */ +#define Rx_over 0x01 +#define Xoff_state 0x02 +#define Tx_flowOff 0x04 +#define Tx_enable 0x08 +#define CTS_state 0x10 +#define DSR_state 0x20 +#define DCD_state 0x80 +/* + * FlowControl + */ +#define CTS_FlowCtl 1 +#define RTS_FlowCtl 2 +#define Tx_FlowCtl 4 +#define Rx_FlowCtl 8 +#define IXM_IXANY 0x10 + +#define LowWater 128 + +#define DTR_ON 1 +#define RTS_ON 2 +#define CTS_ON 1 +#define DSR_ON 2 +#define DCD_ON 8 + +/* mode definition */ +#define MX_CS8 0x03 +#define MX_CS7 0x02 +#define MX_CS6 0x01 +#define MX_CS5 0x00 + +#define MX_STOP1 0x00 +#define MX_STOP15 0x04 +#define MX_STOP2 0x08 + +#define MX_PARNONE 0x00 +#define MX_PAREVEN 0x40 +#define MX_PARODD 0xC0 + +#endif diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c index ff146c2b08f..fe2a95b5d3c 100644 --- a/drivers/char/mspec.c +++ b/drivers/char/mspec.c @@ -180,7 +180,7 @@ mspec_close(struct vm_area_struct *vma) my_page = vdata->maddr[index]; vdata->maddr[index] = 0; if (!mspec_zero_block(my_page, PAGE_SIZE)) - uncached_free_page(my_page); + uncached_free_page(my_page, 1); else printk(KERN_WARNING "mspec_close(): " "failed to zero page %ld\n", my_page); @@ -209,7 +209,7 @@ mspec_nopfn(struct vm_area_struct *vma, unsigned long address) index = (address - vdata->vm_start) >> PAGE_SHIFT; maddr = (volatile unsigned long) vdata->maddr[index]; if (maddr == 0) { - maddr = uncached_alloc_page(numa_node_id()); + maddr = uncached_alloc_page(numa_node_id(), 1); if (maddr == 0) return NOPFN_OOM; @@ -218,7 +218,7 @@ mspec_nopfn(struct vm_area_struct *vma, unsigned long address) vdata->count++; vdata->maddr[index] = maddr; } else { - uncached_free_page(maddr); + uncached_free_page(maddr, 1); maddr = vdata->maddr[index]; } spin_unlock(&vdata->lock); @@ -367,7 +367,7 @@ mspec_init(void) int nasid; unsigned long phys; - scratch_page[nid] = uncached_alloc_page(nid); + scratch_page[nid] = uncached_alloc_page(nid, 1); if (scratch_page[nid] == 0) goto free_scratch_pages; phys = __pa(scratch_page[nid]); @@ -414,7 +414,7 @@ mspec_init(void) free_scratch_pages: for_each_node(nid) { if (scratch_page[nid] != 0) - uncached_free_page(scratch_page[nid]); + uncached_free_page(scratch_page[nid], 1); } return ret; } @@ -431,7 +431,7 @@ mspec_exit(void) for_each_node(nid) { if (scratch_page[nid] != 0) - uncached_free_page(scratch_page[nid]); + uncached_free_page(scratch_page[nid], 1); } } } diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c index 68c2e923469..4b81a85c5b5 100644 --- a/drivers/char/mxser.c +++ b/drivers/char/mxser.c @@ -307,6 +307,200 @@ static unsigned char mxser_msr[MXSER_PORTS + 1]; static struct mxser_mon_ext mon_data_ext; static int mxser_set_baud_method[MXSER_PORTS + 1]; +static void mxser_enable_must_enchance_mode(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr |= MOXA_MUST_EFR_EFRB_ENABLE; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_disable_must_enchance_mode(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_EFRB_ENABLE; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_set_must_xon1_value(unsigned long baseio, u8 value) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_BANK_MASK; + efr |= MOXA_MUST_EFR_BANK0; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(value, baseio + MOXA_MUST_XON1_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_set_must_xoff1_value(unsigned long baseio, u8 value) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_BANK_MASK; + efr |= MOXA_MUST_EFR_BANK0; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(value, baseio + MOXA_MUST_XOFF1_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_set_must_fifo_value(struct mxser_port *info) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(info->ioaddr + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, info->ioaddr + UART_LCR); + + efr = inb(info->ioaddr + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_BANK_MASK; + efr |= MOXA_MUST_EFR_BANK1; + + outb(efr, info->ioaddr + MOXA_MUST_EFR_REGISTER); + outb((u8)info->rx_high_water, info->ioaddr + MOXA_MUST_RBRTH_REGISTER); + outb((u8)info->rx_trigger, info->ioaddr + MOXA_MUST_RBRTI_REGISTER); + outb((u8)info->rx_low_water, info->ioaddr + MOXA_MUST_RBRTL_REGISTER); + outb(oldlcr, info->ioaddr + UART_LCR); +} + +static void mxser_set_must_enum_value(unsigned long baseio, u8 value) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_BANK_MASK; + efr |= MOXA_MUST_EFR_BANK2; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(value, baseio + MOXA_MUST_ENUM_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_get_must_hardware_id(unsigned long baseio, u8 *pId) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_BANK_MASK; + efr |= MOXA_MUST_EFR_BANK2; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + *pId = inb(baseio + MOXA_MUST_HWID_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_SF_MASK; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_enable_must_tx_software_flow_control(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_SF_TX_MASK; + efr |= MOXA_MUST_EFR_SF_TX1; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_disable_must_tx_software_flow_control(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_SF_TX_MASK; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_enable_must_rx_software_flow_control(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_SF_RX_MASK; + efr |= MOXA_MUST_EFR_SF_RX1; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_disable_must_rx_software_flow_control(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_SF_RX_MASK; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + #ifdef CONFIG_PCI static int __devinit CheckIsMoxaMust(unsigned long io) { @@ -314,16 +508,16 @@ static int __devinit CheckIsMoxaMust(unsigned long io) int i; outb(0, io + UART_LCR); - DISABLE_MOXA_MUST_ENCHANCE_MODE(io); + mxser_disable_must_enchance_mode(io); oldmcr = inb(io + UART_MCR); outb(0, io + UART_MCR); - SET_MOXA_MUST_XON1_VALUE(io, 0x11); + mxser_set_must_xon1_value(io, 0x11); if ((hwid = inb(io + UART_MCR)) != 0) { outb(oldmcr, io + UART_MCR); return MOXA_OTHER_UART; } - GET_MOXA_MUST_HARDWARE_ID(io, &hwid); + mxser_get_must_hardware_id(io, &hwid); for (i = 1; i < UART_INFO_NUM; i++) { /* 0 = OTHER_UART */ if (hwid == Gpci_uart_info[i].type) return (int)hwid; @@ -494,10 +688,10 @@ static int mxser_set_baud(struct mxser_port *info, long newspd) } else quot /= newspd; - SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, quot); + mxser_set_must_enum_value(info->ioaddr, quot); } else #endif - SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, 0); + mxser_set_must_enum_value(info->ioaddr, 0); return 0; } @@ -553,14 +747,14 @@ static int mxser_change_speed(struct mxser_port *info, if (info->board->chip_flag) { fcr = UART_FCR_ENABLE_FIFO; fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; - SET_MOXA_MUST_FIFO_VALUE(info); + mxser_set_must_fifo_value(info); } else fcr = 0; } else { fcr = UART_FCR_ENABLE_FIFO; if (info->board->chip_flag) { fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; - SET_MOXA_MUST_FIFO_VALUE(info); + mxser_set_must_fifo_value(info); } else { switch (info->rx_trigger) { case 1: @@ -657,17 +851,21 @@ static int mxser_change_speed(struct mxser_port *info, } } if (info->board->chip_flag) { - SET_MOXA_MUST_XON1_VALUE(info->ioaddr, START_CHAR(info->tty)); - SET_MOXA_MUST_XOFF1_VALUE(info->ioaddr, STOP_CHAR(info->tty)); + mxser_set_must_xon1_value(info->ioaddr, START_CHAR(info->tty)); + mxser_set_must_xoff1_value(info->ioaddr, STOP_CHAR(info->tty)); if (I_IXON(info->tty)) { - ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr); + mxser_enable_must_rx_software_flow_control( + info->ioaddr); } else { - DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr); + mxser_disable_must_rx_software_flow_control( + info->ioaddr); } if (I_IXOFF(info->tty)) { - ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr); + mxser_enable_must_tx_software_flow_control( + info->ioaddr); } else { - DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr); + mxser_disable_must_tx_software_flow_control( + info->ioaddr); } } @@ -927,6 +1125,27 @@ static int mxser_open(struct tty_struct *tty, struct file *filp) return 0; } +static void mxser_flush_buffer(struct tty_struct *tty) +{ + struct mxser_port *info = tty->driver_data; + char fcr; + unsigned long flags; + + + spin_lock_irqsave(&info->slock, flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + + fcr = inb(info->ioaddr + UART_FCR); + outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), + info->ioaddr + UART_FCR); + outb(fcr, info->ioaddr + UART_FCR); + + spin_unlock_irqrestore(&info->slock, flags); + + tty_wakeup(tty); +} + + /* * This routine is called when the serial port gets closed. First, we * wait for the last remaining data to be sent. Then, we unlink its @@ -1013,9 +1232,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) } mxser_shutdown(info); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); - + mxser_flush_buffer(tty); tty_ldisc_flush(tty); tty->closing = 0; @@ -1072,16 +1289,16 @@ static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int cou return total; } -static void mxser_put_char(struct tty_struct *tty, unsigned char ch) +static int mxser_put_char(struct tty_struct *tty, unsigned char ch) { struct mxser_port *info = tty->driver_data; unsigned long flags; if (!info->xmit_buf) - return; + return 0; if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) - return; + return 0; spin_lock_irqsave(&info->slock, flags); info->xmit_buf[info->xmit_head++] = ch; @@ -1099,6 +1316,7 @@ static void mxser_put_char(struct tty_struct *tty, unsigned char ch) spin_unlock_irqrestore(&info->slock, flags); } } + return 1; } @@ -1142,26 +1360,6 @@ static int mxser_chars_in_buffer(struct tty_struct *tty) return info->xmit_cnt; } -static void mxser_flush_buffer(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - char fcr; - unsigned long flags; - - - spin_lock_irqsave(&info->slock, flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - - fcr = inb(info->ioaddr + UART_FCR); - outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), - info->ioaddr + UART_FCR); - outb(fcr, info->ioaddr + UART_FCR); - - spin_unlock_irqrestore(&info->slock, flags); - - tty_wakeup(tty); -} - /* * ------------------------------------------------------------ * friends of mxser_ioctl() @@ -1460,6 +1658,7 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp) struct mxser_port *port; int result, status; unsigned int i, j; + int ret = 0; switch (cmd) { case MOXA_GET_MAJOR: @@ -1467,18 +1666,21 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp) case MOXA_CHKPORTENABLE: result = 0; - + lock_kernel(); for (i = 0; i < MXSER_BOARDS; i++) for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) if (mxser_boards[i].ports[j].ioaddr) result |= (1 << i); - + unlock_kernel(); return put_user(result, (unsigned long __user *)argp); case MOXA_GETDATACOUNT: + lock_kernel(); if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log))) - return -EFAULT; - return 0; + ret = -EFAULT; + unlock_kernel(); + return ret; case MOXA_GETMSTATUS: + lock_kernel(); for (i = 0; i < MXSER_BOARDS; i++) for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) { port = &mxser_boards[i].ports[j]; @@ -1515,6 +1717,7 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp) else GMStatus[i].cts = 0; } + unlock_kernel(); if (copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MXSER_PORTS)) return -EFAULT; @@ -1524,7 +1727,8 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp) unsigned long opmode; unsigned cflag, iflag; - for (i = 0; i < MXSER_BOARDS; i++) + lock_kernel(); + for (i = 0; i < MXSER_BOARDS; i++) { for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) { port = &mxser_boards[i].ports[j]; if (!port->ioaddr) @@ -1589,13 +1793,14 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp) mon_data_ext.iftype[i] = opmode; } - if (copy_to_user(argp, &mon_data_ext, - sizeof(mon_data_ext))) - return -EFAULT; - - return 0; - - } default: + } + unlock_kernel(); + if (copy_to_user(argp, &mon_data_ext, + sizeof(mon_data_ext))) + return -EFAULT; + return 0; + } + default: return -ENOIOCTLCMD; } return 0; @@ -1651,16 +1856,20 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, opmode != RS422_MODE && opmode != RS485_4WIRE_MODE) return -EFAULT; + lock_kernel(); mask = ModeMask[p]; shiftbit = p * 2; val = inb(info->opmode_ioaddr); val &= mask; val |= (opmode << shiftbit); outb(val, info->opmode_ioaddr); + unlock_kernel(); } else { + lock_kernel(); shiftbit = p * 2; opmode = inb(info->opmode_ioaddr) >> shiftbit; opmode &= OP_MODE_MASK; + unlock_kernel(); if (put_user(opmode, (int __user *)argp)) return -EFAULT; } @@ -1687,19 +1896,18 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, tty_wait_until_sent(tty, 0); mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4); return 0; - case TIOCGSOFTCAR: - return put_user(!!C_CLOCAL(tty), (unsigned long __user *)argp); - case TIOCSSOFTCAR: - if (get_user(arg, (unsigned long __user *)argp)) - return -EFAULT; - tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0)); - return 0; case TIOCGSERIAL: - return mxser_get_serial_info(info, argp); + lock_kernel(); + retval = mxser_get_serial_info(info, argp); + unlock_kernel(); + return retval; case TIOCSSERIAL: - return mxser_set_serial_info(info, argp); + lock_kernel(); + retval = mxser_set_serial_info(info, argp); + unlock_kernel(); + return retval; case TIOCSERGETLSR: /* Get line status register */ - return mxser_get_lsr_info(info, argp); + return mxser_get_lsr_info(info, argp); /* * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change * - mask passed in arg for lines of interest @@ -1746,24 +1954,27 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, case MOXA_HighSpeedOn: return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp); case MOXA_SDS_RSTICOUNTER: + lock_kernel(); info->mon_data.rxcnt = 0; info->mon_data.txcnt = 0; + unlock_kernel(); return 0; case MOXA_ASPP_OQUEUE:{ int len, lsr; + lock_kernel(); len = mxser_chars_in_buffer(tty); - lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT; - len += (lsr ? 0 : 1); + unlock_kernel(); return put_user(len, (int __user *)argp); } case MOXA_ASPP_MON: { int mcr, status; + lock_kernel(); status = mxser_get_msr(info->ioaddr, 1, tty->index); mxser_check_modem_status(info, status); @@ -1782,7 +1993,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD; else info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD; - + unlock_kernel(); if (copy_to_user(argp, &info->mon_data, sizeof(struct mxser_mon))) return -EFAULT; @@ -1925,7 +2136,8 @@ static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termi if (info->board->chip_flag) { spin_lock_irqsave(&info->slock, flags); - DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr); + mxser_disable_must_rx_software_flow_control( + info->ioaddr); spin_unlock_irqrestore(&info->slock, flags); } @@ -1979,6 +2191,7 @@ static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) timeout, char_time); printk("jiff=%lu...", jiffies); #endif + lock_kernel(); while (!((lsr = inb(info->ioaddr + UART_LSR)) & UART_LSR_TEMT)) { #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT printk("lsr = %d (jiff=%lu)...", lsr, jiffies); @@ -1990,6 +2203,7 @@ static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) break; } set_current_state(TASK_RUNNING); + unlock_kernel(); #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); @@ -2342,7 +2556,7 @@ static int __devinit mxser_initbrd(struct mxser_board *brd, /* Enhance mode enabled here */ if (brd->chip_flag != MOXA_OTHER_UART) - ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr); + mxser_enable_must_enchance_mode(info->ioaddr); info->flags = ASYNC_SHARE_IRQ; info->type = brd->uart_type; diff --git a/drivers/char/mxser.h b/drivers/char/mxser.h index 84417111595..41878a69203 100644 --- a/drivers/char/mxser.h +++ b/drivers/char/mxser.h @@ -147,141 +147,4 @@ /* Rx software flow control mask */ #define MOXA_MUST_EFR_SF_RX_MASK 0x03 -#define ENABLE_MOXA_MUST_ENCHANCE_MODE(baseio) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((baseio)+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \ - __efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \ - __efr |= MOXA_MUST_EFR_EFRB_ENABLE; \ - outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \ - outb(__oldlcr, (baseio)+UART_LCR); \ -} while (0) - -#define DISABLE_MOXA_MUST_ENCHANCE_MODE(baseio) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((baseio)+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \ - __efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \ - __efr &= ~MOXA_MUST_EFR_EFRB_ENABLE; \ - outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \ - outb(__oldlcr, (baseio)+UART_LCR); \ -} while (0) - -#define SET_MOXA_MUST_XON1_VALUE(baseio, Value) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((baseio)+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \ - __efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \ - __efr &= ~MOXA_MUST_EFR_BANK_MASK; \ - __efr |= MOXA_MUST_EFR_BANK0; \ - outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \ - outb((u8)(Value), (baseio)+MOXA_MUST_XON1_REGISTER); \ - outb(__oldlcr, (baseio)+UART_LCR); \ -} while (0) - -#define SET_MOXA_MUST_XOFF1_VALUE(baseio, Value) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((baseio)+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \ - __efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \ - __efr &= ~MOXA_MUST_EFR_BANK_MASK; \ - __efr |= MOXA_MUST_EFR_BANK0; \ - outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \ - outb((u8)(Value), (baseio)+MOXA_MUST_XOFF1_REGISTER); \ - outb(__oldlcr, (baseio)+UART_LCR); \ -} while (0) - -#define SET_MOXA_MUST_FIFO_VALUE(info) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((info)->ioaddr+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (info)->ioaddr+UART_LCR);\ - __efr = inb((info)->ioaddr+MOXA_MUST_EFR_REGISTER); \ - __efr &= ~MOXA_MUST_EFR_BANK_MASK; \ - __efr |= MOXA_MUST_EFR_BANK1; \ - outb(__efr, (info)->ioaddr+MOXA_MUST_EFR_REGISTER); \ - outb((u8)((info)->rx_high_water), (info)->ioaddr+ \ - MOXA_MUST_RBRTH_REGISTER); \ - outb((u8)((info)->rx_trigger), (info)->ioaddr+ \ - MOXA_MUST_RBRTI_REGISTER); \ - outb((u8)((info)->rx_low_water), (info)->ioaddr+ \ - MOXA_MUST_RBRTL_REGISTER); \ - outb(__oldlcr, (info)->ioaddr+UART_LCR); \ -} while (0) - -#define SET_MOXA_MUST_ENUM_VALUE(baseio, Value) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((baseio)+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \ - __efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \ - __efr &= ~MOXA_MUST_EFR_BANK_MASK; \ - __efr |= MOXA_MUST_EFR_BANK2; \ - outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \ - outb((u8)(Value), (baseio)+MOXA_MUST_ENUM_REGISTER); \ - outb(__oldlcr, (baseio)+UART_LCR); \ -} while (0) - -#define GET_MOXA_MUST_HARDWARE_ID(baseio, pId) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((baseio)+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \ - __efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \ - __efr &= ~MOXA_MUST_EFR_BANK_MASK; \ - __efr |= MOXA_MUST_EFR_BANK2; \ - outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \ - *pId = inb((baseio)+MOXA_MUST_HWID_REGISTER); \ - outb(__oldlcr, (baseio)+UART_LCR); \ -} while (0) - -#define SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(baseio) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((baseio)+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \ - __efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \ - __efr &= ~MOXA_MUST_EFR_SF_MASK; \ - outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \ - outb(__oldlcr, (baseio)+UART_LCR); \ -} while (0) - -#define ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(baseio) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((baseio)+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \ - __efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \ - __efr &= ~MOXA_MUST_EFR_SF_TX_MASK; \ - __efr |= MOXA_MUST_EFR_SF_TX1; \ - outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \ - outb(__oldlcr, (baseio)+UART_LCR); \ -} while (0) - -#define DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(baseio) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((baseio)+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \ - __efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \ - __efr &= ~MOXA_MUST_EFR_SF_TX_MASK; \ - outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \ - outb(__oldlcr, (baseio)+UART_LCR); \ -} while (0) - -#define ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(baseio) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((baseio)+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \ - __efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \ - __efr &= ~MOXA_MUST_EFR_SF_RX_MASK; \ - __efr |= MOXA_MUST_EFR_SF_RX1; \ - outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \ - outb(__oldlcr, (baseio)+UART_LCR); \ -} while (0) - -#define DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(baseio) do { \ - u8 __oldlcr, __efr; \ - __oldlcr = inb((baseio)+UART_LCR); \ - outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \ - __efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \ - __efr &= ~MOXA_MUST_EFR_SF_RX_MASK; \ - outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \ - outb(__oldlcr, (baseio)+UART_LCR); \ -} while (0) - #endif diff --git a/drivers/char/n_hdlc.c b/drivers/char/n_hdlc.c index 06803ed5568..a35bfd7ee80 100644 --- a/drivers/char/n_hdlc.c +++ b/drivers/char/n_hdlc.c @@ -342,12 +342,10 @@ static int n_hdlc_tty_open (struct tty_struct *tty) #endif /* Flush any pending characters in the driver and discipline. */ - if (tty->ldisc.flush_buffer) - tty->ldisc.flush_buffer (tty); + tty->ldisc.flush_buffer(tty); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer (tty); + tty_driver_flush_buffer(tty); if (debuglevel >= DEBUG_LEVEL_INFO) printk("%s(%d)n_hdlc_tty_open() success\n",__FILE__,__LINE__); @@ -399,7 +397,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty) /* Send the next block of data to device */ tty->flags |= (1 << TTY_DO_WRITE_WAKEUP); - actual = tty->driver->write(tty, tbuf->buf, tbuf->count); + actual = tty->ops->write(tty, tbuf->buf, tbuf->count); /* rollback was possible and has been done */ if (actual == -ERESTARTSYS) { @@ -578,26 +576,36 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file, return -EFAULT; } + lock_kernel(); + for (;;) { - if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) + if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) { + unlock_kernel(); return -EIO; + } n_hdlc = tty2n_hdlc (tty); if (!n_hdlc || n_hdlc->magic != HDLC_MAGIC || - tty != n_hdlc->tty) + tty != n_hdlc->tty) { + unlock_kernel(); return 0; + } rbuf = n_hdlc_buf_get(&n_hdlc->rx_buf_list); if (rbuf) break; /* no data */ - if (file->f_flags & O_NONBLOCK) + if (file->f_flags & O_NONBLOCK) { + unlock_kernel(); return -EAGAIN; + } interruptible_sleep_on (&tty->read_wait); - if (signal_pending(current)) + if (signal_pending(current)) { + unlock_kernel(); return -EINTR; + } } if (rbuf->count > nr) @@ -618,7 +626,7 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file, kfree(rbuf); else n_hdlc_buf_put(&n_hdlc->rx_free_buf_list,rbuf); - + unlock_kernel(); return ret; } /* end of n_hdlc_tty_read() */ @@ -661,6 +669,8 @@ static ssize_t n_hdlc_tty_write(struct tty_struct *tty, struct file *file, count = maxframe; } + lock_kernel(); + add_wait_queue(&tty->write_wait, &wait); set_current_state(TASK_INTERRUPTIBLE); @@ -695,7 +705,7 @@ static ssize_t n_hdlc_tty_write(struct tty_struct *tty, struct file *file, n_hdlc_buf_put(&n_hdlc->tx_buf_list,tbuf); n_hdlc_send_frames(n_hdlc,tty); } - + unlock_kernel(); return error; } /* end of n_hdlc_tty_write() */ @@ -740,8 +750,7 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file, case TIOCOUTQ: /* get the pending tx byte count in the driver */ - count = tty->driver->chars_in_buffer ? - tty->driver->chars_in_buffer(tty) : 0; + count = tty_chars_in_buffer(tty); /* add size of next output frame in queue */ spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock,flags); if (n_hdlc->tx_buf_list.head) diff --git a/drivers/char/n_r3964.c b/drivers/char/n_r3964.c index 6b918b80f73..90216906233 100644 --- a/drivers/char/n_r3964.c +++ b/drivers/char/n_r3964.c @@ -376,8 +376,9 @@ static void put_char(struct r3964_info *pInfo, unsigned char ch) if (tty == NULL) return; - if (tty->driver->put_char) { - tty->driver->put_char(tty, ch); + /* FIXME: put_char should not be called from an IRQ */ + if (tty->ops->put_char) { + tty->ops->put_char(tty, ch); } pInfo->bcc ^= ch; } @@ -386,12 +387,9 @@ static void flush(struct r3964_info *pInfo) { struct tty_struct *tty = pInfo->tty; - if (tty == NULL) + if (tty == NULL || tty->ops->flush_chars == NULL) return; - - if (tty->driver->flush_chars) { - tty->driver->flush_chars(tty); - } + tty->ops->flush_chars(tty); } static void trigger_transmit(struct r3964_info *pInfo) @@ -449,12 +447,11 @@ static void transmit_block(struct r3964_info *pInfo) struct r3964_block_header *pBlock = pInfo->tx_first; int room = 0; - if ((tty == NULL) || (pBlock == NULL)) { + if (tty == NULL || pBlock == NULL) { return; } - if (tty->driver->write_room) - room = tty->driver->write_room(tty); + room = tty_write_room(tty); TRACE_PS("transmit_block %p, room %d, length %d", pBlock, room, pBlock->length); @@ -1075,12 +1072,15 @@ static ssize_t r3964_read(struct tty_struct *tty, struct file *file, TRACE_L("read()"); + lock_kernel(); + pClient = findClient(pInfo, task_pid(current)); if (pClient) { pMsg = remove_msg(pInfo, pClient); if (pMsg == NULL) { /* no messages available. */ if (file->f_flags & O_NONBLOCK) { + unlock_kernel(); return -EAGAIN; } /* block until there is a message: */ @@ -1090,8 +1090,10 @@ static ssize_t r3964_read(struct tty_struct *tty, struct file *file, /* If we still haven't got a message, we must have been signalled */ - if (!pMsg) + if (!pMsg) { + unlock_kernel(); return -EINTR; + } /* deliver msg to client process: */ theMsg.msg_id = pMsg->msg_id; @@ -1102,12 +1104,15 @@ static ssize_t r3964_read(struct tty_struct *tty, struct file *file, kfree(pMsg); TRACE_M("r3964_read - msg kfree %p", pMsg); - if (copy_to_user(buf, &theMsg, count)) + if (copy_to_user(buf, &theMsg, count)) { + unlock_kernel(); return -EFAULT; + } TRACE_PS("read - return %d", count); return count; } + unlock_kernel(); return -EPERM; } @@ -1156,6 +1161,8 @@ static ssize_t r3964_write(struct tty_struct *tty, struct file *file, pHeader->locks = 0; pHeader->owner = NULL; + lock_kernel(); + pClient = findClient(pInfo, task_pid(current)); if (pClient) { pHeader->owner = pClient; @@ -1173,6 +1180,8 @@ static ssize_t r3964_write(struct tty_struct *tty, struct file *file, add_tx_queue(pInfo, pHeader); trigger_transmit(pInfo); + unlock_kernel(); + return 0; } diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c index 0c09409fa45..19105ec203f 100644 --- a/drivers/char/n_tty.c +++ b/drivers/char/n_tty.c @@ -147,10 +147,8 @@ static void put_tty_queue(unsigned char c, struct tty_struct *tty) static void check_unthrottle(struct tty_struct *tty) { - if (tty->count && - test_and_clear_bit(TTY_THROTTLED, &tty->flags) && - tty->driver->unthrottle) - tty->driver->unthrottle(tty); + if (tty->count) + tty_unthrottle(tty); } /** @@ -183,22 +181,24 @@ static void reset_buffer_flags(struct tty_struct *tty) * at hangup) or when the N_TTY line discipline internally has to * clean the pending queue (for example some signals). * - * FIXME: tty->ctrl_status is not spinlocked and relies on - * lock_kernel() still. + * Locking: ctrl_lock */ static void n_tty_flush_buffer(struct tty_struct *tty) { + unsigned long flags; /* clear everything and unthrottle the driver */ reset_buffer_flags(tty); if (!tty->link) return; + spin_lock_irqsave(&tty->ctrl_lock, flags); if (tty->link->packet) { tty->ctrl_status |= TIOCPKT_FLUSHREAD; wake_up_interruptible(&tty->link->read_wait); } + spin_unlock_irqrestore(&tty->ctrl_lock, flags); } /** @@ -264,17 +264,18 @@ static inline int is_continuation(unsigned char c, struct tty_struct *tty) * relevant in the world today. If you ever need them, add them here. * * Called from both the receive and transmit sides and can be called - * re-entrantly. Relies on lock_kernel() still. + * re-entrantly. Relies on lock_kernel() for tty->column state. */ static int opost(unsigned char c, struct tty_struct *tty) { int space, spaces; - space = tty->driver->write_room(tty); + space = tty_write_room(tty); if (!space) return -1; + lock_kernel(); if (O_OPOST(tty)) { switch (c) { case '\n': @@ -283,7 +284,7 @@ static int opost(unsigned char c, struct tty_struct *tty) if (O_ONLCR(tty)) { if (space < 2) return -1; - tty->driver->put_char(tty, '\r'); + tty_put_char(tty, '\r'); tty->column = 0; } tty->canon_column = tty->column; @@ -305,7 +306,7 @@ static int opost(unsigned char c, struct tty_struct *tty) if (space < spaces) return -1; tty->column += spaces; - tty->driver->write(tty, " ", spaces); + tty->ops->write(tty, " ", spaces); return 0; } tty->column += spaces; @@ -322,7 +323,8 @@ static int opost(unsigned char c, struct tty_struct *tty) break; } } - tty->driver->put_char(tty, c); + tty_put_char(tty, c); + unlock_kernel(); return 0; } @@ -337,7 +339,8 @@ static int opost(unsigned char c, struct tty_struct *tty) * the simple cases normally found and helps to generate blocks of * symbols for the console driver and thus improve performance. * - * Called from write_chan under the tty layer write lock. + * Called from write_chan under the tty layer write lock. Relies + * on lock_kernel for the tty->column state. */ static ssize_t opost_block(struct tty_struct *tty, @@ -347,12 +350,13 @@ static ssize_t opost_block(struct tty_struct *tty, int i; const unsigned char *cp; - space = tty->driver->write_room(tty); + space = tty_write_room(tty); if (!space) return 0; if (nr > space) nr = space; + lock_kernel(); for (i = 0, cp = buf; i < nr; i++, cp++) { switch (*cp) { case '\n': @@ -384,27 +388,15 @@ static ssize_t opost_block(struct tty_struct *tty, } } break_out: - if (tty->driver->flush_chars) - tty->driver->flush_chars(tty); - i = tty->driver->write(tty, buf, i); + if (tty->ops->flush_chars) + tty->ops->flush_chars(tty); + i = tty->ops->write(tty, buf, i); + unlock_kernel(); return i; } /** - * put_char - write character to driver - * @c: character (or part of unicode symbol) - * @tty: terminal device - * - * Queue a byte to the driver layer for output - */ - -static inline void put_char(unsigned char c, struct tty_struct *tty) -{ - tty->driver->put_char(tty, c); -} - -/** * echo_char - echo characters * @c: unicode byte to echo * @tty: terminal device @@ -416,8 +408,8 @@ static inline void put_char(unsigned char c, struct tty_struct *tty) static void echo_char(unsigned char c, struct tty_struct *tty) { if (L_ECHOCTL(tty) && iscntrl(c) && c != '\t') { - put_char('^', tty); - put_char(c ^ 0100, tty); + tty_put_char(tty, '^'); + tty_put_char(tty, c ^ 0100); tty->column += 2; } else opost(c, tty); @@ -426,7 +418,7 @@ static void echo_char(unsigned char c, struct tty_struct *tty) static inline void finish_erasing(struct tty_struct *tty) { if (tty->erasing) { - put_char('/', tty); + tty_put_char(tty, '/'); tty->column++; tty->erasing = 0; } @@ -510,7 +502,7 @@ static void eraser(unsigned char c, struct tty_struct *tty) if (L_ECHO(tty)) { if (L_ECHOPRT(tty)) { if (!tty->erasing) { - put_char('\\', tty); + tty_put_char(tty, '\\'); tty->column++; tty->erasing = 1; } @@ -518,7 +510,7 @@ static void eraser(unsigned char c, struct tty_struct *tty) echo_char(c, tty); while (--cnt > 0) { head = (head+1) & (N_TTY_BUF_SIZE-1); - put_char(tty->read_buf[head], tty); + tty_put_char(tty, tty->read_buf[head]); } } else if (kill_type == ERASE && !L_ECHOE(tty)) { echo_char(ERASE_CHAR(tty), tty); @@ -546,22 +538,22 @@ static void eraser(unsigned char c, struct tty_struct *tty) /* Now backup to that column. */ while (tty->column > col) { /* Can't use opost here. */ - put_char('\b', tty); + tty_put_char(tty, '\b'); if (tty->column > 0) tty->column--; } } else { if (iscntrl(c) && L_ECHOCTL(tty)) { - put_char('\b', tty); - put_char(' ', tty); - put_char('\b', tty); + tty_put_char(tty, '\b'); + tty_put_char(tty, ' '); + tty_put_char(tty, '\b'); if (tty->column > 0) tty->column--; } if (!iscntrl(c) || L_ECHOCTL(tty)) { - put_char('\b', tty); - put_char(' ', tty); - put_char('\b', tty); + tty_put_char(tty, '\b'); + tty_put_char(tty, ' '); + tty_put_char(tty, '\b'); if (tty->column > 0) tty->column--; } @@ -592,8 +584,7 @@ static inline void isig(int sig, struct tty_struct *tty, int flush) kill_pgrp(tty->pgrp, sig, 1); if (flush || !L_NOFLSH(tty)) { n_tty_flush_buffer(tty); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + tty_driver_flush_buffer(tty); } } @@ -701,7 +692,7 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c) if (tty->stopped && !tty->flow_stopped && I_IXON(tty) && ((I_IXANY(tty) && c != START_CHAR(tty) && c != STOP_CHAR(tty)) || - c == INTR_CHAR(tty) || c == QUIT_CHAR(tty))) + c == INTR_CHAR(tty) || c == QUIT_CHAR(tty) || c == SUSP_CHAR(tty))) start_tty(tty); if (tty->closing) { @@ -725,7 +716,7 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c) tty->lnext = 0; if (L_ECHO(tty)) { if (tty->read_cnt >= N_TTY_BUF_SIZE-1) { - put_char('\a', tty); /* beep if no space */ + tty_put_char(tty, '\a'); /* beep if no space */ return; } /* Record the column of first canon char. */ @@ -739,13 +730,6 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c) return; } - if (c == '\r') { - if (I_IGNCR(tty)) - return; - if (I_ICRNL(tty)) - c = '\n'; - } else if (c == '\n' && I_INLCR(tty)) - c = '\r'; if (I_IXON(tty)) { if (c == START_CHAR(tty)) { start_tty(tty); @@ -756,6 +740,7 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c) return; } } + if (L_ISIG(tty)) { int signal; signal = SIGINT; @@ -775,8 +760,7 @@ send_signal: */ if (!L_NOFLSH(tty)) { n_tty_flush_buffer(tty); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + tty_driver_flush_buffer(tty); } if (L_ECHO(tty)) echo_char(c, tty); @@ -785,6 +769,15 @@ send_signal: return; } } + + if (c == '\r') { + if (I_IGNCR(tty)) + return; + if (I_ICRNL(tty)) + c = '\n'; + } else if (c == '\n' && I_INLCR(tty)) + c = '\r'; + if (tty->icanon) { if (c == ERASE_CHAR(tty) || c == KILL_CHAR(tty) || (c == WERASE_CHAR(tty) && L_IEXTEN(tty))) { @@ -796,8 +789,8 @@ send_signal: if (L_ECHO(tty)) { finish_erasing(tty); if (L_ECHOCTL(tty)) { - put_char('^', tty); - put_char('\b', tty); + tty_put_char(tty, '^'); + tty_put_char(tty, '\b'); } } return; @@ -818,7 +811,7 @@ send_signal: if (c == '\n') { if (L_ECHO(tty) || L_ECHONL(tty)) { if (tty->read_cnt >= N_TTY_BUF_SIZE-1) - put_char('\a', tty); + tty_put_char(tty, '\a'); opost('\n', tty); } goto handle_newline; @@ -836,7 +829,7 @@ send_signal: */ if (L_ECHO(tty)) { if (tty->read_cnt >= N_TTY_BUF_SIZE-1) - put_char('\a', tty); + tty_put_char(tty, '\a'); /* Record the column of first canon char. */ if (tty->canon_head == tty->read_head) tty->canon_column = tty->column; @@ -866,7 +859,7 @@ handle_newline: finish_erasing(tty); if (L_ECHO(tty)) { if (tty->read_cnt >= N_TTY_BUF_SIZE-1) { - put_char('\a', tty); /* beep if no space */ + tty_put_char(tty, '\a'); /* beep if no space */ return; } if (c == '\n') @@ -970,8 +963,8 @@ static void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp, break; } } - if (tty->driver->flush_chars) - tty->driver->flush_chars(tty); + if (tty->ops->flush_chars) + tty->ops->flush_chars(tty); } n_tty_set_room(tty); @@ -987,12 +980,8 @@ static void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp, * mode. We don't want to throttle the driver if we're in * canonical mode and don't have a newline yet! */ - if (tty->receive_room < TTY_THRESHOLD_THROTTLE) { - /* check TTY_THROTTLED first so it indicates our state */ - if (!test_and_set_bit(TTY_THROTTLED, &tty->flags) && - tty->driver->throttle) - tty->driver->throttle(tty); - } + if (tty->receive_room < TTY_THRESHOLD_THROTTLE) + tty_throttle(tty); } int is_ignored(int sig) @@ -1076,6 +1065,9 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old) tty->real_raw = 0; } n_tty_set_room(tty); + /* The termios change make the tty ready for I/O */ + wake_up_interruptible(&tty->write_wait); + wake_up_interruptible(&tty->read_wait); } /** @@ -1194,6 +1186,11 @@ extern ssize_t redirected_tty_write(struct file *, const char __user *, * Perform job control management checks on this file/tty descriptor * and if appropriate send any needed signals and return a negative * error code if action should be taken. + * + * FIXME: + * Locking: None - redirected write test is safe, testing + * current->signal should possibly lock current->sighand + * pgrp locking ? */ static int job_control(struct tty_struct *tty, struct file *file) @@ -1246,6 +1243,7 @@ static ssize_t read_chan(struct tty_struct *tty, struct file *file, ssize_t size; long timeout; unsigned long flags; + int packet; do_it_again: @@ -1289,16 +1287,19 @@ do_it_again: if (mutex_lock_interruptible(&tty->atomic_read_lock)) return -ERESTARTSYS; } + packet = tty->packet; add_wait_queue(&tty->read_wait, &wait); while (nr) { /* First test for status change. */ - if (tty->packet && tty->link->ctrl_status) { + if (packet && tty->link->ctrl_status) { unsigned char cs; if (b != buf) break; + spin_lock_irqsave(&tty->link->ctrl_lock, flags); cs = tty->link->ctrl_status; tty->link->ctrl_status = 0; + spin_unlock_irqrestore(&tty->link->ctrl_lock, flags); if (tty_put_user(tty, cs, b++)) { retval = -EFAULT; b--; @@ -1333,6 +1334,7 @@ do_it_again: retval = -ERESTARTSYS; break; } + /* FIXME: does n_tty_set_room need locking ? */ n_tty_set_room(tty); timeout = schedule_timeout(timeout); continue; @@ -1340,7 +1342,7 @@ do_it_again: __set_current_state(TASK_RUNNING); /* Deal with packet mode. */ - if (tty->packet && b == buf) { + if (packet && b == buf) { if (tty_put_user(tty, TIOCPKT_DATA, b++)) { retval = -EFAULT; b--; @@ -1388,6 +1390,8 @@ do_it_again: break; } else { int uncopied; + /* The copy function takes the read lock and handles + locking internally for this case */ uncopied = copy_from_read_buf(tty, &b, &nr); uncopied += copy_from_read_buf(tty, &b, &nr); if (uncopied) { @@ -1429,7 +1433,6 @@ do_it_again: goto do_it_again; n_tty_set_room(tty); - return retval; } @@ -1492,11 +1495,11 @@ static ssize_t write_chan(struct tty_struct *tty, struct file *file, break; b++; nr--; } - if (tty->driver->flush_chars) - tty->driver->flush_chars(tty); + if (tty->ops->flush_chars) + tty->ops->flush_chars(tty); } else { while (nr > 0) { - c = tty->driver->write(tty, b, nr); + c = tty->ops->write(tty, b, nr); if (c < 0) { retval = c; goto break_out; @@ -1533,11 +1536,6 @@ break_out: * * This code must be sure never to sleep through a hangup. * Called without the kernel lock held - fine - * - * FIXME: if someone changes the VMIN or discipline settings for the - * terminal while another process is in poll() the poll does not - * recompute the new limits. Possibly set_termios should issue - * a read wakeup to fix this bug. */ static unsigned int normal_poll(struct tty_struct *tty, struct file *file, @@ -1561,9 +1559,9 @@ static unsigned int normal_poll(struct tty_struct *tty, struct file *file, else tty->minimum_to_wake = 1; } - if (!tty_is_writelocked(tty) && - tty->driver->chars_in_buffer(tty) < WAKEUP_CHARS && - tty->driver->write_room(tty) > 0) + if (tty->ops->write && !tty_is_writelocked(tty) && + tty_chars_in_buffer(tty) < WAKEUP_CHARS && + tty_write_room(tty) > 0) mask |= POLLOUT | POLLWRNORM; return mask; } diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c index 6a6843a0a67..66a0f931c66 100644 --- a/drivers/char/nozomi.c +++ b/drivers/char/nozomi.c @@ -73,7 +73,7 @@ do { \ char tmp[P_BUF_SIZE]; \ snprintf(tmp, sizeof(tmp), ##args); \ printk(_err_flag_ "[%d] %s(): %s\n", __LINE__, \ - __FUNCTION__, tmp); \ + __func__, tmp); \ } while (0) #define DBG1(args...) D_(0x01, ##args) @@ -1407,7 +1407,7 @@ static int __devinit nozomi_card_init(struct pci_dev *pdev, /* Find out what card type it is */ nozomi_get_card_type(dc); - dc->base_addr = ioremap(start, dc->card_type); + dc->base_addr = ioremap_nocache(start, dc->card_type); if (!dc->base_addr) { dev_err(&pdev->dev, "Unable to map card MMIO\n"); ret = -ENODEV; @@ -1724,6 +1724,8 @@ static int ntty_tiocmget(struct tty_struct *tty, struct file *file) const struct ctrl_dl *ctrl_dl = &port->ctrl_dl; const struct ctrl_ul *ctrl_ul = &port->ctrl_ul; + /* Note: these could change under us but it is not clear this + matters if so */ return (ctrl_ul->RTS ? TIOCM_RTS : 0) | (ctrl_ul->DTR ? TIOCM_DTR : 0) | (ctrl_dl->DCD ? TIOCM_CAR : 0) | @@ -1849,16 +1851,6 @@ static void ntty_throttle(struct tty_struct *tty) spin_unlock_irqrestore(&dc->spin_mutex, flags); } -/* just to discard single character writes */ -static void ntty_put_char(struct tty_struct *tty, unsigned char c) -{ - /* - * card does not react correct when we write single chars - * to the card, so we discard them - */ - DBG2("PUT CHAR Function: %c", c); -} - /* Returns number of chars in buffer, called by tty layer */ static s32 ntty_chars_in_buffer(struct tty_struct *tty) { @@ -1892,7 +1884,6 @@ static const struct tty_operations tty_ops = { .unthrottle = ntty_unthrottle, .throttle = ntty_throttle, .chars_in_buffer = ntty_chars_in_buffer, - .put_char = ntty_put_char, .tiocmget = ntty_tiocmget, .tiocmset = ntty_tiocmset, }; diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c index 454d7324ba4..4a933d41342 100644 --- a/drivers/char/pcmcia/cm4000_cs.c +++ b/drivers/char/pcmcia/cm4000_cs.c @@ -53,7 +53,7 @@ module_param(pc_debug, int, 0600); #define DEBUGP(n, rdr, x, args...) do { \ if (pc_debug >= (n)) \ dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x, \ - __FUNCTION__ , ## args); \ + __func__ , ## args); \ } while (0) #else #define DEBUGP(n, rdr, x, args...) diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c index 5f291bf739a..035084c0732 100644 --- a/drivers/char/pcmcia/cm4040_cs.c +++ b/drivers/char/pcmcia/cm4040_cs.c @@ -47,7 +47,7 @@ module_param(pc_debug, int, 0600); #define DEBUGP(n, rdr, x, args...) do { \ if (pc_debug >= (n)) \ dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x, \ - __FUNCTION__ , ##args); \ + __func__ , ##args); \ } while (0) #else #define DEBUGP(n, rdr, x, args...) diff --git a/drivers/char/pcmcia/ipwireless/hardware.c b/drivers/char/pcmcia/ipwireless/hardware.c index 1f978ff87fa..fa9d3c945f3 100644 --- a/drivers/char/pcmcia/ipwireless/hardware.c +++ b/drivers/char/pcmcia/ipwireless/hardware.c @@ -354,32 +354,6 @@ struct ipw_rx_packet { unsigned int channel_idx; }; -#ifdef IPWIRELESS_STATE_DEBUG -int ipwireless_dump_hardware_state(char *p, size_t limit, - struct ipw_hardware *hw) -{ - return snprintf(p, limit, - "debug: initializing=%d\n" - "debug: tx_ready=%d\n" - "debug: tx_queued=%d\n" - "debug: rx_ready=%d\n" - "debug: rx_bytes_queued=%d\n" - "debug: blocking_rx=%d\n" - "debug: removed=%d\n" - "debug: hardware.shutting_down=%d\n" - "debug: to_setup=%d\n", - hw->initializing, - hw->tx_ready, - hw->tx_queued, - hw->rx_ready, - hw->rx_bytes_queued, - hw->blocking_rx, - hw->removed, - hw->shutting_down, - hw->to_setup); -} -#endif - static char *data_type(const unsigned char *buf, unsigned length) { struct nl_packet_header *hdr = (struct nl_packet_header *) buf; diff --git a/drivers/char/pcmcia/ipwireless/hardware.h b/drivers/char/pcmcia/ipwireless/hardware.h index c83190ffb0e..19ce5eb266b 100644 --- a/drivers/char/pcmcia/ipwireless/hardware.h +++ b/drivers/char/pcmcia/ipwireless/hardware.h @@ -58,7 +58,5 @@ void ipwireless_init_hardware_v1(struct ipw_hardware *hw, void *reboot_cb_data); void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw); void ipwireless_sleep(unsigned int tenths); -int ipwireless_dump_hardware_state(char *p, size_t limit, - struct ipw_hardware *hw); #endif diff --git a/drivers/char/pcmcia/ipwireless/network.c b/drivers/char/pcmcia/ipwireless/network.c index d793e68b3e0..fe914d34f7f 100644 --- a/drivers/char/pcmcia/ipwireless/network.c +++ b/drivers/char/pcmcia/ipwireless/network.c @@ -63,21 +63,6 @@ struct ipw_network { struct work_struct work_go_offline; }; - -#ifdef IPWIRELESS_STATE_DEBUG -int ipwireless_dump_network_state(char *p, size_t limit, - struct ipw_network *network) -{ - return snprintf(p, limit, - "debug: ppp_blocked=%d\n" - "debug: outgoing_packets_queued=%d\n" - "debug: network.shutting_down=%d\n", - network->ppp_blocked, - network->outgoing_packets_queued, - network->shutting_down); -} -#endif - static void notify_packet_sent(void *callback_data, unsigned int packet_length) { struct ipw_network *network = callback_data; diff --git a/drivers/char/pcmcia/ipwireless/network.h b/drivers/char/pcmcia/ipwireless/network.h index b0e1e952fd1..ccacd26fc7e 100644 --- a/drivers/char/pcmcia/ipwireless/network.h +++ b/drivers/char/pcmcia/ipwireless/network.h @@ -49,7 +49,4 @@ void ipwireless_ppp_close(struct ipw_network *net); int ipwireless_ppp_channel_index(struct ipw_network *net); int ipwireless_ppp_unit_number(struct ipw_network *net); -int ipwireless_dump_network_state(char *p, size_t limit, - struct ipw_network *net); - #endif diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c index 583356426df..1dd0e992c83 100644 --- a/drivers/char/pcmcia/synclink_cs.c +++ b/drivers/char/pcmcia/synclink_cs.c @@ -503,20 +503,9 @@ static void* mgslpc_get_text_ptr(void) * The wrappers maintain line discipline references * while calling into the line discipline. * - * ldisc_flush_buffer - flush line discipline receive buffers * ldisc_receive_buf - pass receive data to line discipline */ -static void ldisc_flush_buffer(struct tty_struct *tty) -{ - struct tty_ldisc *ld = tty_ldisc_ref(tty); - if (ld) { - if (ld->flush_buffer) - ld->flush_buffer(tty); - tty_ldisc_deref(ld); - } -} - static void ldisc_receive_buf(struct tty_struct *tty, const __u8 *data, char *flags, int count) { @@ -1556,7 +1545,7 @@ static void mgslpc_change_params(MGSLPC_INFO *info) /* Add a character to the transmit buffer */ -static void mgslpc_put_char(struct tty_struct *tty, unsigned char ch) +static int mgslpc_put_char(struct tty_struct *tty, unsigned char ch) { MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; unsigned long flags; @@ -1567,10 +1556,10 @@ static void mgslpc_put_char(struct tty_struct *tty, unsigned char ch) } if (mgslpc_paranoia_check(info, tty->name, "mgslpc_put_char")) - return; + return 0; if (!info->tx_buf) - return; + return 0; spin_lock_irqsave(&info->lock,flags); @@ -1583,6 +1572,7 @@ static void mgslpc_put_char(struct tty_struct *tty, unsigned char ch) } spin_unlock_irqrestore(&info->lock,flags); + return 1; } /* Enable transmitter so remaining characters in the @@ -2467,10 +2457,9 @@ static void mgslpc_close(struct tty_struct *tty, struct file * filp) if (info->flags & ASYNC_INITIALIZED) mgslpc_wait_until_sent(tty, info->timeout); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + mgslpc_flush_buffer(tty); - ldisc_flush_buffer(tty); + tty_ldisc_flush(tty); shutdown(info); diff --git a/drivers/char/pty.c b/drivers/char/pty.c index 706ff34728f..0a05c038ae6 100644 --- a/drivers/char/pty.c +++ b/drivers/char/pty.c @@ -181,6 +181,7 @@ static int pty_set_lock(struct tty_struct *tty, int __user * arg) static void pty_flush_buffer(struct tty_struct *tty) { struct tty_struct *to = tty->link; + unsigned long flags; if (!to) return; @@ -189,8 +190,10 @@ static void pty_flush_buffer(struct tty_struct *tty) to->ldisc.flush_buffer(to); if (to->packet) { + spin_lock_irqsave(&tty->ctrl_lock, flags); tty->ctrl_status |= TIOCPKT_FLUSHWRITE; wake_up_interruptible(&to->read_wait); + spin_unlock_irqrestore(&tty->ctrl_lock, flags); } } @@ -251,6 +254,18 @@ static int pty_bsd_ioctl(struct tty_struct *tty, struct file *file, static int legacy_count = CONFIG_LEGACY_PTY_COUNT; module_param(legacy_count, int, 0); +static const struct tty_operations pty_ops_bsd = { + .open = pty_open, + .close = pty_close, + .write = pty_write, + .write_room = pty_write_room, + .flush_buffer = pty_flush_buffer, + .chars_in_buffer = pty_chars_in_buffer, + .unthrottle = pty_unthrottle, + .set_termios = pty_set_termios, + .ioctl = pty_bsd_ioctl, +}; + static void __init legacy_pty_init(void) { if (legacy_count <= 0) @@ -281,7 +296,6 @@ static void __init legacy_pty_init(void) pty_driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_REAL_RAW; pty_driver->other = pty_slave_driver; tty_set_operations(pty_driver, &pty_ops); - pty_driver->ioctl = pty_bsd_ioctl; pty_slave_driver->owner = THIS_MODULE; pty_slave_driver->driver_name = "pty_slave"; @@ -374,6 +388,19 @@ static int pty_unix98_ioctl(struct tty_struct *tty, struct file *file, return -ENOIOCTLCMD; } +static const struct tty_operations pty_unix98_ops = { + .open = pty_open, + .close = pty_close, + .write = pty_write, + .write_room = pty_write_room, + .flush_buffer = pty_flush_buffer, + .chars_in_buffer = pty_chars_in_buffer, + .unthrottle = pty_unthrottle, + .set_termios = pty_set_termios, + .ioctl = pty_unix98_ioctl +}; + + static void __init unix98_pty_init(void) { ptm_driver = alloc_tty_driver(NR_UNIX98_PTY_MAX); @@ -400,8 +427,7 @@ static void __init unix98_pty_init(void) ptm_driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_DEVPTS_MEM; ptm_driver->other = pts_driver; - tty_set_operations(ptm_driver, &pty_ops); - ptm_driver->ioctl = pty_unix98_ioctl; + tty_set_operations(ptm_driver, &pty_unix98_ops); pts_driver->owner = THIS_MODULE; pts_driver->driver_name = "pty_slave"; diff --git a/drivers/char/random.c b/drivers/char/random.c index f43c89f7c44..0cf98bd4f2d 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -272,7 +272,7 @@ static int random_write_wakeup_thresh = 128; static int trickle_thresh __read_mostly = INPUT_POOL_WORDS * 28; -static DEFINE_PER_CPU(int, trickle_count) = 0; +static DEFINE_PER_CPU(int, trickle_count); /* * A pool of size .poolwords is stirred with a primitive polynomial @@ -370,17 +370,19 @@ static struct poolinfo { */ static DECLARE_WAIT_QUEUE_HEAD(random_read_wait); static DECLARE_WAIT_QUEUE_HEAD(random_write_wait); +static struct fasync_struct *fasync; #if 0 -static int debug = 0; +static int debug; module_param(debug, bool, 0644); -#define DEBUG_ENT(fmt, arg...) do { if (debug) \ - printk(KERN_DEBUG "random %04d %04d %04d: " \ - fmt,\ - input_pool.entropy_count,\ - blocking_pool.entropy_count,\ - nonblocking_pool.entropy_count,\ - ## arg); } while (0) +#define DEBUG_ENT(fmt, arg...) do { \ + if (debug) \ + printk(KERN_DEBUG "random %04d %04d %04d: " \ + fmt,\ + input_pool.entropy_count,\ + blocking_pool.entropy_count,\ + nonblocking_pool.entropy_count,\ + ## arg); } while (0) #else #define DEBUG_ENT(fmt, arg...) do {} while (0) #endif @@ -394,7 +396,7 @@ module_param(debug, bool, 0644); struct entropy_store; struct entropy_store { - /* mostly-read data: */ + /* read-only data: */ struct poolinfo *poolinfo; __u32 *pool; const char *name; @@ -402,7 +404,7 @@ struct entropy_store { struct entropy_store *pull; /* read-write data: */ - spinlock_t lock ____cacheline_aligned_in_smp; + spinlock_t lock; unsigned add_ptr; int entropy_count; int input_rotate; @@ -438,25 +440,26 @@ static struct entropy_store nonblocking_pool = { }; /* - * This function adds a byte into the entropy "pool". It does not + * This function adds bytes into the entropy "pool". It does not * update the entropy estimate. The caller should call - * credit_entropy_store if this is appropriate. + * credit_entropy_bits if this is appropriate. * * The pool is stirred with a primitive polynomial of the appropriate * degree, and then twisted. We twist by three bits at a time because * it's cheap to do so and helps slightly in the expected case where * the entropy is concentrated in the low-order bits. */ -static void __add_entropy_words(struct entropy_store *r, const __u32 *in, - int nwords, __u32 out[16]) +static void mix_pool_bytes_extract(struct entropy_store *r, const void *in, + int nbytes, __u8 out[64]) { static __u32 const twist_table[8] = { 0x00000000, 0x3b6e20c8, 0x76dc4190, 0x4db26158, 0xedb88320, 0xd6d6a3e8, 0x9b64c2b0, 0xa00ae278 }; - unsigned long i, add_ptr, tap1, tap2, tap3, tap4, tap5; - int new_rotate, input_rotate; + unsigned long i, j, tap1, tap2, tap3, tap4, tap5; + int input_rotate; int wordmask = r->poolinfo->poolwords - 1; - __u32 w, next_w; + const char *bytes = in; + __u32 w; unsigned long flags; /* Taps are constant, so we can load them without holding r->lock. */ @@ -465,78 +468,76 @@ static void __add_entropy_words(struct entropy_store *r, const __u32 *in, tap3 = r->poolinfo->tap3; tap4 = r->poolinfo->tap4; tap5 = r->poolinfo->tap5; - next_w = *in++; spin_lock_irqsave(&r->lock, flags); - prefetch_range(r->pool, wordmask); input_rotate = r->input_rotate; - add_ptr = r->add_ptr; + i = r->add_ptr; - while (nwords--) { - w = rol32(next_w, input_rotate); - if (nwords > 0) - next_w = *in++; - i = add_ptr = (add_ptr - 1) & wordmask; - /* - * Normally, we add 7 bits of rotation to the pool. - * At the beginning of the pool, add an extra 7 bits - * rotation, so that successive passes spread the - * input bits across the pool evenly. - */ - new_rotate = input_rotate + 14; - if (i) - new_rotate = input_rotate + 7; - input_rotate = new_rotate & 31; + /* mix one byte at a time to simplify size handling and churn faster */ + while (nbytes--) { + w = rol32(*bytes++, input_rotate & 31); + i = (i - 1) & wordmask; /* XOR in the various taps */ + w ^= r->pool[i]; w ^= r->pool[(i + tap1) & wordmask]; w ^= r->pool[(i + tap2) & wordmask]; w ^= r->pool[(i + tap3) & wordmask]; w ^= r->pool[(i + tap4) & wordmask]; w ^= r->pool[(i + tap5) & wordmask]; - w ^= r->pool[i]; + + /* Mix the result back in with a twist */ r->pool[i] = (w >> 3) ^ twist_table[w & 7]; + + /* + * Normally, we add 7 bits of rotation to the pool. + * At the beginning of the pool, add an extra 7 bits + * rotation, so that successive passes spread the + * input bits across the pool evenly. + */ + input_rotate += i ? 7 : 14; } r->input_rotate = input_rotate; - r->add_ptr = add_ptr; + r->add_ptr = i; - if (out) { - for (i = 0; i < 16; i++) { - out[i] = r->pool[add_ptr]; - add_ptr = (add_ptr - 1) & wordmask; - } - } + if (out) + for (j = 0; j < 16; j++) + ((__u32 *)out)[j] = r->pool[(i - j) & wordmask]; spin_unlock_irqrestore(&r->lock, flags); } -static inline void add_entropy_words(struct entropy_store *r, const __u32 *in, - int nwords) +static void mix_pool_bytes(struct entropy_store *r, const void *in, int bytes) { - __add_entropy_words(r, in, nwords, NULL); + mix_pool_bytes_extract(r, in, bytes, NULL); } /* * Credit (or debit) the entropy store with n bits of entropy */ -static void credit_entropy_store(struct entropy_store *r, int nbits) +static void credit_entropy_bits(struct entropy_store *r, int nbits) { unsigned long flags; + if (!nbits) + return; + spin_lock_irqsave(&r->lock, flags); - if (r->entropy_count + nbits < 0) { - DEBUG_ENT("negative entropy/overflow (%d+%d)\n", - r->entropy_count, nbits); + DEBUG_ENT("added %d entropy credits to %s\n", nbits, r->name); + r->entropy_count += nbits; + if (r->entropy_count < 0) { + DEBUG_ENT("negative entropy/overflow\n"); r->entropy_count = 0; - } else if (r->entropy_count + nbits > r->poolinfo->POOLBITS) { + } else if (r->entropy_count > r->poolinfo->POOLBITS) r->entropy_count = r->poolinfo->POOLBITS; - } else { - r->entropy_count += nbits; - if (nbits) - DEBUG_ENT("added %d entropy credits to %s\n", - nbits, r->name); + + /* should we wake readers? */ + if (r == &input_pool && + r->entropy_count >= random_read_wakeup_thresh) { + wake_up_interruptible(&random_read_wait); + kill_fasync(&fasync, SIGIO, POLL_IN); } spin_unlock_irqrestore(&r->lock, flags); @@ -551,7 +552,7 @@ static void credit_entropy_store(struct entropy_store *r, int nbits) /* There is one of these per entropy source */ struct timer_rand_state { cycles_t last_time; - long last_delta,last_delta2; + long last_delta, last_delta2; unsigned dont_count_entropy:1; }; @@ -586,7 +587,7 @@ static void add_timer_randomness(struct timer_rand_state *state, unsigned num) sample.jiffies = jiffies; sample.cycles = get_cycles(); sample.num = num; - add_entropy_words(&input_pool, (u32 *)&sample, sizeof(sample)/4); + mix_pool_bytes(&input_pool, &sample, sizeof(sample)); /* * Calculate number of bits of randomness we probably added. @@ -620,13 +621,9 @@ static void add_timer_randomness(struct timer_rand_state *state, unsigned num) * Round down by 1 bit on general principles, * and limit entropy entimate to 12 bits. */ - credit_entropy_store(&input_pool, - min_t(int, fls(delta>>1), 11)); + credit_entropy_bits(&input_pool, + min_t(int, fls(delta>>1), 11)); } - - if(input_pool.entropy_count >= random_read_wakeup_thresh) - wake_up_interruptible(&random_read_wait); - out: preempt_enable(); } @@ -677,7 +674,7 @@ void add_disk_randomness(struct gendisk *disk) * *********************************************************************/ -static ssize_t extract_entropy(struct entropy_store *r, void * buf, +static ssize_t extract_entropy(struct entropy_store *r, void *buf, size_t nbytes, int min, int rsvd); /* @@ -704,10 +701,10 @@ static void xfer_secondary_pool(struct entropy_store *r, size_t nbytes) "(%d of %d requested)\n", r->name, bytes * 8, nbytes * 8, r->entropy_count); - bytes=extract_entropy(r->pull, tmp, bytes, - random_read_wakeup_thresh / 8, rsvd); - add_entropy_words(r, tmp, (bytes + 3) / 4); - credit_entropy_store(r, bytes*8); + bytes = extract_entropy(r->pull, tmp, bytes, + random_read_wakeup_thresh / 8, rsvd); + mix_pool_bytes(r, tmp, bytes); + credit_entropy_bits(r, bytes*8); } } @@ -744,13 +741,15 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min, if (r->limit && nbytes + reserved >= r->entropy_count / 8) nbytes = r->entropy_count/8 - reserved; - if(r->entropy_count / 8 >= nbytes + reserved) + if (r->entropy_count / 8 >= nbytes + reserved) r->entropy_count -= nbytes*8; else r->entropy_count = reserved; - if (r->entropy_count < random_write_wakeup_thresh) + if (r->entropy_count < random_write_wakeup_thresh) { wake_up_interruptible(&random_write_wait); + kill_fasync(&fasync, SIGIO, POLL_OUT); + } } DEBUG_ENT("debiting %d entropy credits from %s%s\n", @@ -764,45 +763,46 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min, static void extract_buf(struct entropy_store *r, __u8 *out) { int i; - __u32 data[16], buf[5 + SHA_WORKSPACE_WORDS]; + __u32 hash[5], workspace[SHA_WORKSPACE_WORDS]; + __u8 extract[64]; + + /* Generate a hash across the pool, 16 words (512 bits) at a time */ + sha_init(hash); + for (i = 0; i < r->poolinfo->poolwords; i += 16) + sha_transform(hash, (__u8 *)(r->pool + i), workspace); - sha_init(buf); /* - * As we hash the pool, we mix intermediate values of - * the hash back into the pool. This eliminates - * backtracking attacks (where the attacker knows - * the state of the pool plus the current outputs, and - * attempts to find previous ouputs), unless the hash - * function can be inverted. + * We mix the hash back into the pool to prevent backtracking + * attacks (where the attacker knows the state of the pool + * plus the current outputs, and attempts to find previous + * ouputs), unless the hash function can be inverted. By + * mixing at least a SHA1 worth of hash data back, we make + * brute-forcing the feedback as hard as brute-forcing the + * hash. */ - for (i = 0; i < r->poolinfo->poolwords; i += 16) { - /* hash blocks of 16 words = 512 bits */ - sha_transform(buf, (__u8 *)(r->pool + i), buf + 5); - /* feed back portion of the resulting hash */ - add_entropy_words(r, &buf[i % 5], 1); - } + mix_pool_bytes_extract(r, hash, sizeof(hash), extract); /* - * To avoid duplicates, we atomically extract a - * portion of the pool while mixing, and hash one - * final time. + * To avoid duplicates, we atomically extract a portion of the + * pool while mixing, and hash one final time. */ - __add_entropy_words(r, &buf[i % 5], 1, data); - sha_transform(buf, (__u8 *)data, buf + 5); + sha_transform(hash, extract, workspace); + memset(extract, 0, sizeof(extract)); + memset(workspace, 0, sizeof(workspace)); /* - * In case the hash function has some recognizable - * output pattern, we fold it in half. + * In case the hash function has some recognizable output + * pattern, we fold it in half. Thus, we always feed back + * twice as much data as we output. */ - - buf[0] ^= buf[3]; - buf[1] ^= buf[4]; - buf[2] ^= rol32(buf[2], 16); - memcpy(out, buf, EXTRACT_SIZE); - memset(buf, 0, sizeof(buf)); + hash[0] ^= hash[3]; + hash[1] ^= hash[4]; + hash[2] ^= rol32(hash[2], 16); + memcpy(out, hash, EXTRACT_SIZE); + memset(hash, 0, sizeof(hash)); } -static ssize_t extract_entropy(struct entropy_store *r, void * buf, +static ssize_t extract_entropy(struct entropy_store *r, void *buf, size_t nbytes, int min, int reserved) { ssize_t ret = 0, i; @@ -872,7 +872,6 @@ void get_random_bytes(void *buf, int nbytes) { extract_entropy(&nonblocking_pool, buf, nbytes, 0, 0); } - EXPORT_SYMBOL(get_random_bytes); /* @@ -894,12 +893,11 @@ static void init_std_data(struct entropy_store *r) spin_unlock_irqrestore(&r->lock, flags); now = ktime_get_real(); - add_entropy_words(r, (__u32 *)&now, sizeof(now)/4); - add_entropy_words(r, (__u32 *)utsname(), - sizeof(*(utsname()))/4); + mix_pool_bytes(r, &now, sizeof(now)); + mix_pool_bytes(r, utsname(), sizeof(*(utsname()))); } -static int __init rand_initialize(void) +static int rand_initialize(void) { init_std_data(&input_pool); init_std_data(&blocking_pool); @@ -940,7 +938,7 @@ void rand_initialize_disk(struct gendisk *disk) #endif static ssize_t -random_read(struct file * file, char __user * buf, size_t nbytes, loff_t *ppos) +random_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { ssize_t n, retval = 0, count = 0; @@ -1002,8 +1000,7 @@ random_read(struct file * file, char __user * buf, size_t nbytes, loff_t *ppos) } static ssize_t -urandom_read(struct file * file, char __user * buf, - size_t nbytes, loff_t *ppos) +urandom_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { return extract_entropy_user(&nonblocking_pool, buf, nbytes); } @@ -1038,16 +1035,15 @@ write_pool(struct entropy_store *r, const char __user *buffer, size_t count) count -= bytes; p += bytes; - add_entropy_words(r, buf, (bytes + 3) / 4); + mix_pool_bytes(r, buf, bytes); cond_resched(); } return 0; } -static ssize_t -random_write(struct file * file, const char __user * buffer, - size_t count, loff_t *ppos) +static ssize_t random_write(struct file *file, const char __user *buffer, + size_t count, loff_t *ppos) { size_t ret; struct inode *inode = file->f_path.dentry->d_inode; @@ -1064,9 +1060,7 @@ random_write(struct file * file, const char __user * buffer, return (ssize_t)count; } -static int -random_ioctl(struct inode * inode, struct file * file, - unsigned int cmd, unsigned long arg) +static long random_ioctl(struct file *f, unsigned int cmd, unsigned long arg) { int size, ent_count; int __user *p = (int __user *)arg; @@ -1074,8 +1068,8 @@ random_ioctl(struct inode * inode, struct file * file, switch (cmd) { case RNDGETENTCNT: - ent_count = input_pool.entropy_count; - if (put_user(ent_count, p)) + /* inherently racy, no point locking */ + if (put_user(input_pool.entropy_count, p)) return -EFAULT; return 0; case RNDADDTOENTCNT: @@ -1083,13 +1077,7 @@ random_ioctl(struct inode * inode, struct file * file, return -EPERM; if (get_user(ent_count, p)) return -EFAULT; - credit_entropy_store(&input_pool, ent_count); - /* - * Wake up waiting processes if we have enough - * entropy. - */ - if (input_pool.entropy_count >= random_read_wakeup_thresh) - wake_up_interruptible(&random_read_wait); + credit_entropy_bits(&input_pool, ent_count); return 0; case RNDADDENTROPY: if (!capable(CAP_SYS_ADMIN)) @@ -1104,39 +1092,45 @@ random_ioctl(struct inode * inode, struct file * file, size); if (retval < 0) return retval; - credit_entropy_store(&input_pool, ent_count); - /* - * Wake up waiting processes if we have enough - * entropy. - */ - if (input_pool.entropy_count >= random_read_wakeup_thresh) - wake_up_interruptible(&random_read_wait); + credit_entropy_bits(&input_pool, ent_count); return 0; case RNDZAPENTCNT: case RNDCLEARPOOL: /* Clear the entropy pool counters. */ if (!capable(CAP_SYS_ADMIN)) return -EPERM; - init_std_data(&input_pool); - init_std_data(&blocking_pool); - init_std_data(&nonblocking_pool); + rand_initialize(); return 0; default: return -EINVAL; } } +static int random_fasync(int fd, struct file *filp, int on) +{ + return fasync_helper(fd, filp, on, &fasync); +} + +static int random_release(struct inode *inode, struct file *filp) +{ + return fasync_helper(-1, filp, 0, &fasync); +} + const struct file_operations random_fops = { .read = random_read, .write = random_write, .poll = random_poll, - .ioctl = random_ioctl, + .unlocked_ioctl = random_ioctl, + .fasync = random_fasync, + .release = random_release, }; const struct file_operations urandom_fops = { .read = urandom_read, .write = random_write, - .ioctl = random_ioctl, + .unlocked_ioctl = random_ioctl, + .fasync = random_fasync, + .release = random_release, }; /*************************************************************** @@ -1157,7 +1151,6 @@ void generate_random_uuid(unsigned char uuid_out[16]) /* Set the UUID variant to DCE */ uuid_out[8] = (uuid_out[8] & 0x3F) | 0x80; } - EXPORT_SYMBOL(generate_random_uuid); /******************************************************************** @@ -1339,7 +1332,7 @@ ctl_table random_table[] = { #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) -static __u32 twothirdsMD4Transform (__u32 const buf[4], __u32 const in[12]) +static __u32 twothirdsMD4Transform(__u32 const buf[4], __u32 const in[12]) { __u32 a = buf[0], b = buf[1], c = buf[2], d = buf[3]; @@ -1487,8 +1480,8 @@ __u32 secure_tcpv6_sequence_number(__be32 *saddr, __be32 *daddr, */ memcpy(hash, saddr, 16); - hash[4]=((__force u16)sport << 16) + (__force u16)dport; - memcpy(&hash[5],keyptr->secret,sizeof(__u32) * 7); + hash[4] = ((__force u16)sport << 16) + (__force u16)dport; + memcpy(&hash[5], keyptr->secret, sizeof(__u32) * 7); seq = twothirdsMD4Transform((const __u32 *)daddr, hash) & HASH_MASK; seq += keyptr->count; @@ -1538,10 +1531,10 @@ __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr, * Note that the words are placed into the starting vector, which is * then mixed with a partial MD4 over random data. */ - hash[0]=(__force u32)saddr; - hash[1]=(__force u32)daddr; - hash[2]=((__force u16)sport << 16) + (__force u16)dport; - hash[3]=keyptr->secret[11]; + hash[0] = (__force u32)saddr; + hash[1] = (__force u32)daddr; + hash[2] = ((__force u16)sport << 16) + (__force u16)dport; + hash[3] = keyptr->secret[11]; seq = half_md4_transform(hash, keyptr->secret) & HASH_MASK; seq += keyptr->count; @@ -1556,10 +1549,7 @@ __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr, * Choosing a clock of 64 ns period is OK. (period of 274 s) */ seq += ktime_to_ns(ktime_get_real()) >> 6; -#if 0 - printk("init_seq(%lx, %lx, %d, %d) = %d\n", - saddr, daddr, sport, dport, seq); -#endif + return seq; } @@ -1582,14 +1572,15 @@ u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport) } #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) -u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr, __be16 dport) +u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr, + __be16 dport) { struct keydata *keyptr = get_keyptr(); u32 hash[12]; memcpy(hash, saddr, 16); hash[4] = (__force u32)dport; - memcpy(&hash[5],keyptr->secret,sizeof(__u32) * 7); + memcpy(&hash[5], keyptr->secret, sizeof(__u32) * 7); return twothirdsMD4Transform((const __u32 *)daddr, hash); } @@ -1617,13 +1608,9 @@ u64 secure_dccp_sequence_number(__be32 saddr, __be32 daddr, seq += ktime_to_ns(ktime_get_real()); seq &= (1ull << 48) - 1; -#if 0 - printk("dccp init_seq(%lx, %lx, %d, %d) = %d\n", - saddr, daddr, sport, dport, seq); -#endif + return seq; } - EXPORT_SYMBOL(secure_dccp_sequence_number); #endif diff --git a/drivers/char/rio/cirrus.h b/drivers/char/rio/cirrus.h index f4f837f8682..a03a538a3ef 100644 --- a/drivers/char/rio/cirrus.h +++ b/drivers/char/rio/cirrus.h @@ -43,83 +43,83 @@ /* Bit fields for particular registers shared with driver */ /* COR1 - driver and RTA */ -#define COR1_ODD 0x80 /* Odd parity */ -#define COR1_EVEN 0x00 /* Even parity */ -#define COR1_NOP 0x00 /* No parity */ -#define COR1_FORCE 0x20 /* Force parity */ -#define COR1_NORMAL 0x40 /* With parity */ -#define COR1_1STOP 0x00 /* 1 stop bit */ -#define COR1_15STOP 0x04 /* 1.5 stop bits */ -#define COR1_2STOP 0x08 /* 2 stop bits */ -#define COR1_5BITS 0x00 /* 5 data bits */ -#define COR1_6BITS 0x01 /* 6 data bits */ -#define COR1_7BITS 0x02 /* 7 data bits */ -#define COR1_8BITS 0x03 /* 8 data bits */ - -#define COR1_HOST 0xef /* Safe host bits */ +#define RIOC_COR1_ODD 0x80 /* Odd parity */ +#define RIOC_COR1_EVEN 0x00 /* Even parity */ +#define RIOC_COR1_NOP 0x00 /* No parity */ +#define RIOC_COR1_FORCE 0x20 /* Force parity */ +#define RIOC_COR1_NORMAL 0x40 /* With parity */ +#define RIOC_COR1_1STOP 0x00 /* 1 stop bit */ +#define RIOC_COR1_15STOP 0x04 /* 1.5 stop bits */ +#define RIOC_COR1_2STOP 0x08 /* 2 stop bits */ +#define RIOC_COR1_5BITS 0x00 /* 5 data bits */ +#define RIOC_COR1_6BITS 0x01 /* 6 data bits */ +#define RIOC_COR1_7BITS 0x02 /* 7 data bits */ +#define RIOC_COR1_8BITS 0x03 /* 8 data bits */ + +#define RIOC_COR1_HOST 0xef /* Safe host bits */ /* RTA only */ -#define COR1_CINPCK 0x00 /* Check parity of received characters */ -#define COR1_CNINPCK 0x10 /* Don't check parity */ +#define RIOC_COR1_CINPCK 0x00 /* Check parity of received characters */ +#define RIOC_COR1_CNINPCK 0x10 /* Don't check parity */ /* COR2 bits for both RTA and driver use */ -#define COR2_IXANY 0x80 /* IXANY - any character is XON */ -#define COR2_IXON 0x40 /* IXON - enable tx soft flowcontrol */ -#define COR2_RTSFLOW 0x02 /* Enable tx hardware flow control */ +#define RIOC_COR2_IXANY 0x80 /* IXANY - any character is XON */ +#define RIOC_COR2_IXON 0x40 /* IXON - enable tx soft flowcontrol */ +#define RIOC_COR2_RTSFLOW 0x02 /* Enable tx hardware flow control */ /* Additional driver bits */ -#define COR2_HUPCL 0x20 /* Hang up on close */ -#define COR2_CTSFLOW 0x04 /* Enable rx hardware flow control */ -#define COR2_IXOFF 0x01 /* Enable rx software flow control */ -#define COR2_DTRFLOW 0x08 /* Enable tx hardware flow control */ +#define RIOC_COR2_HUPCL 0x20 /* Hang up on close */ +#define RIOC_COR2_CTSFLOW 0x04 /* Enable rx hardware flow control */ +#define RIOC_COR2_IXOFF 0x01 /* Enable rx software flow control */ +#define RIOC_COR2_DTRFLOW 0x08 /* Enable tx hardware flow control */ /* RTA use only */ -#define COR2_ETC 0x20 /* Embedded transmit options */ -#define COR2_LOCAL 0x10 /* Local loopback mode */ -#define COR2_REMOTE 0x08 /* Remote loopback mode */ -#define COR2_HOST 0xc2 /* Safe host bits */ +#define RIOC_COR2_ETC 0x20 /* Embedded transmit options */ +#define RIOC_COR2_LOCAL 0x10 /* Local loopback mode */ +#define RIOC_COR2_REMOTE 0x08 /* Remote loopback mode */ +#define RIOC_COR2_HOST 0xc2 /* Safe host bits */ /* COR3 - RTA use only */ -#define COR3_SCDRNG 0x80 /* Enable special char detect for range */ -#define COR3_SCD34 0x40 /* Special character detect for SCHR's 3 + 4 */ -#define COR3_FCT 0x20 /* Flow control transparency */ -#define COR3_SCD12 0x10 /* Special character detect for SCHR's 1 + 2 */ -#define COR3_FIFO12 0x0c /* 12 chars for receive FIFO threshold */ -#define COR3_FIFO10 0x0a /* 10 chars for receive FIFO threshold */ -#define COR3_FIFO8 0x08 /* 8 chars for receive FIFO threshold */ -#define COR3_FIFO6 0x06 /* 6 chars for receive FIFO threshold */ - -#define COR3_THRESHOLD COR3_FIFO8 /* MUST BE LESS THAN MCOR_THRESHOLD */ - -#define COR3_DEFAULT (COR3_FCT | COR3_THRESHOLD) +#define RIOC_COR3_SCDRNG 0x80 /* Enable special char detect for range */ +#define RIOC_COR3_SCD34 0x40 /* Special character detect for SCHR's 3 + 4 */ +#define RIOC_COR3_FCT 0x20 /* Flow control transparency */ +#define RIOC_COR3_SCD12 0x10 /* Special character detect for SCHR's 1 + 2 */ +#define RIOC_COR3_FIFO12 0x0c /* 12 chars for receive FIFO threshold */ +#define RIOC_COR3_FIFO10 0x0a /* 10 chars for receive FIFO threshold */ +#define RIOC_COR3_FIFO8 0x08 /* 8 chars for receive FIFO threshold */ +#define RIOC_COR3_FIFO6 0x06 /* 6 chars for receive FIFO threshold */ + +#define RIOC_COR3_THRESHOLD RIOC_COR3_FIFO8 /* MUST BE LESS THAN MCOR_THRESHOLD */ + +#define RIOC_COR3_DEFAULT (RIOC_COR3_FCT | RIOC_COR3_THRESHOLD) /* Default bits for COR3 */ /* COR4 driver and RTA use */ -#define COR4_IGNCR 0x80 /* Throw away CR's on input */ -#define COR4_ICRNL 0x40 /* Map CR -> NL on input */ -#define COR4_INLCR 0x20 /* Map NL -> CR on input */ -#define COR4_IGNBRK 0x10 /* Ignore Break */ -#define COR4_NBRKINT 0x08 /* No interrupt on break (-BRKINT) */ -#define COR4_RAISEMOD 0x01 /* Raise modem output lines on non-zero baud */ +#define RIOC_COR4_IGNCR 0x80 /* Throw away CR's on input */ +#define RIOC_COR4_ICRNL 0x40 /* Map CR -> NL on input */ +#define RIOC_COR4_INLCR 0x20 /* Map NL -> CR on input */ +#define RIOC_COR4_IGNBRK 0x10 /* Ignore Break */ +#define RIOC_COR4_NBRKINT 0x08 /* No interrupt on break (-BRKINT) */ +#define RIOC_COR4_RAISEMOD 0x01 /* Raise modem output lines on non-zero baud */ /* COR4 driver only */ -#define COR4_IGNPAR 0x04 /* IGNPAR (ignore characters with errors) */ -#define COR4_PARMRK 0x02 /* PARMRK */ +#define RIOC_COR4_IGNPAR 0x04 /* IGNPAR (ignore characters with errors) */ +#define RIOC_COR4_PARMRK 0x02 /* PARMRK */ -#define COR4_HOST 0xf8 /* Safe host bits */ +#define RIOC_COR4_HOST 0xf8 /* Safe host bits */ /* COR4 RTA only */ -#define COR4_CIGNPAR 0x02 /* Thrown away bad characters */ -#define COR4_CPARMRK 0x04 /* PARMRK characters */ -#define COR4_CNPARMRK 0x03 /* Don't PARMRK */ +#define RIOC_COR4_CIGNPAR 0x02 /* Thrown away bad characters */ +#define RIOC_COR4_CPARMRK 0x04 /* PARMRK characters */ +#define RIOC_COR4_CNPARMRK 0x03 /* Don't PARMRK */ /* COR5 driver and RTA use */ -#define COR5_ISTRIP 0x80 /* Strip input chars to 7 bits */ -#define COR5_LNE 0x40 /* Enable LNEXT processing */ -#define COR5_CMOE 0x20 /* Match good and errored characters */ -#define COR5_ONLCR 0x02 /* NL -> CR NL on output */ -#define COR5_OCRNL 0x01 /* CR -> NL on output */ +#define RIOC_COR5_ISTRIP 0x80 /* Strip input chars to 7 bits */ +#define RIOC_COR5_LNE 0x40 /* Enable LNEXT processing */ +#define RIOC_COR5_CMOE 0x20 /* Match good and errored characters */ +#define RIOC_COR5_ONLCR 0x02 /* NL -> CR NL on output */ +#define RIOC_COR5_OCRNL 0x01 /* CR -> NL on output */ /* ** Spare bits - these are not used in the CIRRUS registers, so we use @@ -128,86 +128,86 @@ /* ** tstop and tbusy indication */ -#define COR5_TSTATE_ON 0x08 /* Turn on monitoring of tbusy and tstop */ -#define COR5_TSTATE_OFF 0x04 /* Turn off monitoring of tbusy and tstop */ +#define RIOC_COR5_TSTATE_ON 0x08 /* Turn on monitoring of tbusy and tstop */ +#define RIOC_COR5_TSTATE_OFF 0x04 /* Turn off monitoring of tbusy and tstop */ /* ** TAB3 */ -#define COR5_TAB3 0x10 /* TAB3 mode */ +#define RIOC_COR5_TAB3 0x10 /* TAB3 mode */ -#define COR5_HOST 0xc3 /* Safe host bits */ +#define RIOC_COR5_HOST 0xc3 /* Safe host bits */ /* CCSR */ -#define CCSR_TXFLOFF 0x04 /* Tx is xoffed */ +#define RIOC_CCSR_TXFLOFF 0x04 /* Tx is xoffed */ /* MSVR1 */ /* NB. DTR / CD swapped from Cirrus spec as the pins are also reversed on the RTA. This is because otherwise DCD would get lost on the 1 parallel / 3 serial option. */ -#define MSVR1_CD 0x80 /* CD (DSR on Cirrus) */ -#define MSVR1_RTS 0x40 /* RTS (CTS on Cirrus) */ -#define MSVR1_RI 0x20 /* RI */ -#define MSVR1_DTR 0x10 /* DTR (CD on Cirrus) */ -#define MSVR1_CTS 0x01 /* CTS output pin (RTS on Cirrus) */ +#define RIOC_MSVR1_CD 0x80 /* CD (DSR on Cirrus) */ +#define RIOC_MSVR1_RTS 0x40 /* RTS (CTS on Cirrus) */ +#define RIOC_MSVR1_RI 0x20 /* RI */ +#define RIOC_MSVR1_DTR 0x10 /* DTR (CD on Cirrus) */ +#define RIOC_MSVR1_CTS 0x01 /* CTS output pin (RTS on Cirrus) */ /* Next two used to indicate state of tbusy and tstop to driver */ -#define MSVR1_TSTOP 0x08 /* Set if port flow controlled */ -#define MSVR1_TEMPTY 0x04 /* Set if port tx buffer empty */ +#define RIOC_MSVR1_TSTOP 0x08 /* Set if port flow controlled */ +#define RIOC_MSVR1_TEMPTY 0x04 /* Set if port tx buffer empty */ -#define MSVR1_HOST 0xf3 /* The bits the host wants */ +#define RIOC_MSVR1_HOST 0xf3 /* The bits the host wants */ /* Defines for the subscripts of a CONFIG packet */ -#define CONFIG_COR1 1 /* Option register 1 */ -#define CONFIG_COR2 2 /* Option register 2 */ -#define CONFIG_COR4 3 /* Option register 4 */ -#define CONFIG_COR5 4 /* Option register 5 */ -#define CONFIG_TXXON 5 /* Tx XON character */ -#define CONFIG_TXXOFF 6 /* Tx XOFF character */ -#define CONFIG_RXXON 7 /* Rx XON character */ -#define CONFIG_RXXOFF 8 /* Rx XOFF character */ -#define CONFIG_LNEXT 9 /* LNEXT character */ -#define CONFIG_TXBAUD 10 /* Tx baud rate */ -#define CONFIG_RXBAUD 11 /* Rx baud rate */ - -#define PRE_EMPTIVE 0x80 /* Pre-emptive bit in command field */ +#define RIOC_CONFIG_COR1 1 /* Option register 1 */ +#define RIOC_CONFIG_COR2 2 /* Option register 2 */ +#define RIOC_CONFIG_COR4 3 /* Option register 4 */ +#define RIOC_CONFIG_COR5 4 /* Option register 5 */ +#define RIOC_CONFIG_TXXON 5 /* Tx XON character */ +#define RIOC_CONFIG_TXXOFF 6 /* Tx XOFF character */ +#define RIOC_CONFIG_RXXON 7 /* Rx XON character */ +#define RIOC_CONFIG_RXXOFF 8 /* Rx XOFF character */ +#define RIOC_CONFIG_LNEXT 9 /* LNEXT character */ +#define RIOC_CONFIG_TXBAUD 10 /* Tx baud rate */ +#define RIOC_CONFIG_RXBAUD 11 /* Rx baud rate */ + +#define RIOC_PRE_EMPTIVE 0x80 /* Pre-emptive bit in command field */ /* Packet types going from Host to remote - with the exception of OPEN, MOPEN, CONFIG, SBREAK and MEMDUMP the remaining bytes of the data array will not be used */ -#define OPEN 0x00 /* Open a port */ -#define CONFIG 0x01 /* Configure a port */ -#define MOPEN 0x02 /* Modem open (block for DCD) */ -#define CLOSE 0x03 /* Close a port */ -#define WFLUSH (0x04 | PRE_EMPTIVE) /* Write flush */ -#define RFLUSH (0x05 | PRE_EMPTIVE) /* Read flush */ -#define RESUME (0x06 | PRE_EMPTIVE) /* Resume if xoffed */ -#define SBREAK 0x07 /* Start break */ -#define EBREAK 0x08 /* End break */ -#define SUSPEND (0x09 | PRE_EMPTIVE) /* Susp op (behave as tho xoffed) */ -#define FCLOSE (0x0a | PRE_EMPTIVE) /* Force close */ -#define XPRINT 0x0b /* Xprint packet */ -#define MBIS (0x0c | PRE_EMPTIVE) /* Set modem lines */ -#define MBIC (0x0d | PRE_EMPTIVE) /* Clear modem lines */ -#define MSET (0x0e | PRE_EMPTIVE) /* Set modem lines */ -#define PCLOSE 0x0f /* Pseudo close - Leaves rx/tx enabled */ -#define MGET (0x10 | PRE_EMPTIVE) /* Force update of modem status */ -#define MEMDUMP (0x11 | PRE_EMPTIVE) /* Send back mem from addr supplied */ -#define READ_REGISTER (0x12 | PRE_EMPTIVE) /* Read CD1400 register (debug) */ +#define RIOC_OPEN 0x00 /* Open a port */ +#define RIOC_CONFIG 0x01 /* Configure a port */ +#define RIOC_MOPEN 0x02 /* Modem open (block for DCD) */ +#define RIOC_CLOSE 0x03 /* Close a port */ +#define RIOC_WFLUSH (0x04 | RIOC_PRE_EMPTIVE) /* Write flush */ +#define RIOC_RFLUSH (0x05 | RIOC_PRE_EMPTIVE) /* Read flush */ +#define RIOC_RESUME (0x06 | RIOC_PRE_EMPTIVE) /* Resume if xoffed */ +#define RIOC_SBREAK 0x07 /* Start break */ +#define RIOC_EBREAK 0x08 /* End break */ +#define RIOC_SUSPEND (0x09 | RIOC_PRE_EMPTIVE) /* Susp op (behave as tho xoffed) */ +#define RIOC_FCLOSE (0x0a | RIOC_PRE_EMPTIVE) /* Force close */ +#define RIOC_XPRINT 0x0b /* Xprint packet */ +#define RIOC_MBIS (0x0c | RIOC_PRE_EMPTIVE) /* Set modem lines */ +#define RIOC_MBIC (0x0d | RIOC_PRE_EMPTIVE) /* Clear modem lines */ +#define RIOC_MSET (0x0e | RIOC_PRE_EMPTIVE) /* Set modem lines */ +#define RIOC_PCLOSE 0x0f /* Pseudo close - Leaves rx/tx enabled */ +#define RIOC_MGET (0x10 | RIOC_PRE_EMPTIVE) /* Force update of modem status */ +#define RIOC_MEMDUMP (0x11 | RIOC_PRE_EMPTIVE) /* Send back mem from addr supplied */ +#define RIOC_READ_REGISTER (0x12 | RIOC_PRE_EMPTIVE) /* Read CD1400 register (debug) */ /* "Command" packets going from remote to host COMPLETE and MODEM_STATUS use data[4] / data[3] to indicate current state and modem status respectively */ -#define COMPLETE (0x20 | PRE_EMPTIVE) +#define RIOC_COMPLETE (0x20 | RIOC_PRE_EMPTIVE) /* Command complete */ -#define BREAK_RECEIVED (0x21 | PRE_EMPTIVE) +#define RIOC_BREAK_RECEIVED (0x21 | RIOC_PRE_EMPTIVE) /* Break received */ -#define MODEM_STATUS (0x22 | PRE_EMPTIVE) +#define RIOC_MODEM_STATUS (0x22 | RIOC_PRE_EMPTIVE) /* Change in modem status */ /* "Command" packet that could go either way - handshake wake-up */ -#define HANDSHAKE (0x23 | PRE_EMPTIVE) +#define RIOC_HANDSHAKE (0x23 | RIOC_PRE_EMPTIVE) /* Wake-up to HOST / RTA */ #endif diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c index 0ce96670f97..412777cd1e6 100644 --- a/drivers/char/rio/rio_linux.c +++ b/drivers/char/rio/rio_linux.c @@ -344,7 +344,7 @@ int rio_minor(struct tty_struct *tty) static int rio_set_real_termios(void *ptr) { - return RIOParam((struct Port *) ptr, CONFIG, 1, 1); + return RIOParam((struct Port *) ptr, RIOC_CONFIG, 1, 1); } @@ -487,7 +487,7 @@ static int rio_get_CD(void *ptr) int rv; func_enter(); - rv = (PortP->ModemState & MSVR1_CD) != 0; + rv = (PortP->ModemState & RIOC_MSVR1_CD) != 0; rio_dprintk(RIO_DEBUG_INIT, "Getting CD status: %d\n", rv); @@ -607,7 +607,8 @@ static int rio_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n"); rc = -EIO; } else { - if (RIOShortCommand(p, PortP, SBREAK, 2, 250) == RIO_FAIL) { + if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2, 250) == + RIO_FAIL) { rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n"); rc = -EIO; } @@ -622,7 +623,8 @@ static int rio_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd l = arg ? arg * 100 : 250; if (l > 255) l = 255; - if (RIOShortCommand(p, PortP, SBREAK, 2, arg ? arg * 100 : 250) == RIO_FAIL) { + if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2, + arg ? arg * 100 : 250) == RIO_FAIL) { rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n"); rc = -EIO; } diff --git a/drivers/char/rio/rio_linux.h b/drivers/char/rio/rio_linux.h index dc3f005614a..7f26cd7c815 100644 --- a/drivers/char/rio/rio_linux.h +++ b/drivers/char/rio/rio_linux.h @@ -186,9 +186,9 @@ static inline void *rio_memcpy_fromio(void *dest, void __iomem *source, int n) #ifdef DEBUG #define rio_dprintk(f, str...) do { if (rio_debug & f) printk (str);} while (0) -#define func_enter() rio_dprintk (RIO_DEBUG_FLOW, "rio: enter %s\n", __FUNCTION__) -#define func_exit() rio_dprintk (RIO_DEBUG_FLOW, "rio: exit %s\n", __FUNCTION__) -#define func_enter2() rio_dprintk (RIO_DEBUG_FLOW, "rio: enter %s (port %d)\n",__FUNCTION__, port->line) +#define func_enter() rio_dprintk (RIO_DEBUG_FLOW, "rio: enter %s\n", __func__) +#define func_exit() rio_dprintk (RIO_DEBUG_FLOW, "rio: exit %s\n", __func__) +#define func_enter2() rio_dprintk (RIO_DEBUG_FLOW, "rio: enter %s (port %d)\n",__func__, port->line) #else #define rio_dprintk(f, str...) /* nothing */ #define func_enter() diff --git a/drivers/char/rio/riocmd.c b/drivers/char/rio/riocmd.c index bf36959fc12..7b96e081488 100644 --- a/drivers/char/rio/riocmd.c +++ b/drivers/char/rio/riocmd.c @@ -417,7 +417,7 @@ static int RIOCommandRup(struct rio_info *p, uint Rup, struct Host *HostP, struc PortP = p->RIOPortp[SysPort]; rio_spin_lock_irqsave(&PortP->portSem, flags); switch (readb(&PktCmdP->Command)) { - case BREAK_RECEIVED: + case RIOC_BREAK_RECEIVED: rio_dprintk(RIO_DEBUG_CMD, "Received a break!\n"); /* If the current line disc. is not multi-threading and the current processor is not the default, reset rup_intr @@ -428,16 +428,16 @@ static int RIOCommandRup(struct rio_info *p, uint Rup, struct Host *HostP, struc gs_got_break(&PortP->gs); break; - case COMPLETE: + case RIOC_COMPLETE: rio_dprintk(RIO_DEBUG_CMD, "Command complete on phb %d host %Zd\n", readb(&PktCmdP->PhbNum), HostP - p->RIOHosts); subCommand = 1; switch (readb(&PktCmdP->SubCommand)) { - case MEMDUMP: + case RIOC_MEMDUMP: rio_dprintk(RIO_DEBUG_CMD, "Memory dump cmd (0x%x) from addr 0x%x\n", readb(&PktCmdP->SubCommand), readw(&PktCmdP->SubAddr)); break; - case READ_REGISTER: + case RIOC_READ_REGISTER: rio_dprintk(RIO_DEBUG_CMD, "Read register (0x%x)\n", readw(&PktCmdP->SubAddr)); - p->CdRegister = (readb(&PktCmdP->ModemStatus) & MSVR1_HOST); + p->CdRegister = (readb(&PktCmdP->ModemStatus) & RIOC_MSVR1_HOST); break; default: subCommand = 0; @@ -456,14 +456,15 @@ static int RIOCommandRup(struct rio_info *p, uint Rup, struct Host *HostP, struc rio_dprintk(RIO_DEBUG_CMD, "No change\n"); /* FALLTHROUGH */ - case MODEM_STATUS: + case RIOC_MODEM_STATUS: /* ** Knock out the tbusy and tstop bits, as these are not relevant ** to the check for modem status change (they're just there because ** it's a convenient place to put them!). */ ReportedModemStatus = readb(&PktCmdP->ModemStatus); - if ((PortP->ModemState & MSVR1_HOST) == (ReportedModemStatus & MSVR1_HOST)) { + if ((PortP->ModemState & RIOC_MSVR1_HOST) == + (ReportedModemStatus & RIOC_MSVR1_HOST)) { rio_dprintk(RIO_DEBUG_CMD, "Modem status unchanged 0x%x\n", PortP->ModemState); /* ** Update ModemState just in case tbusy or tstop states have @@ -497,7 +498,7 @@ static int RIOCommandRup(struct rio_info *p, uint Rup, struct Host *HostP, struc /* ** Is there a carrier? */ - if (PortP->ModemState & MSVR1_CD) { + if (PortP->ModemState & RIOC_MSVR1_CD) { /* ** Has carrier just appeared? */ @@ -691,7 +692,7 @@ void RIOPollHostCommands(struct rio_info *p, struct Host *HostP) */ rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); FreeMe = RIOCommandRup(p, Rup, HostP, PacketP); - if (readb(&PacketP->data[5]) == MEMDUMP) { + if (readb(&PacketP->data[5]) == RIOC_MEMDUMP) { rio_dprintk(RIO_DEBUG_CMD, "Memdump from 0x%x complete\n", readw(&(PacketP->data[6]))); rio_memcpy_fromio(p->RIOMemDump, &(PacketP->data[8]), 32); } diff --git a/drivers/char/rio/rioctrl.c b/drivers/char/rio/rioctrl.c index d8eb2bcbe01..d65ceb9a434 100644 --- a/drivers/char/rio/rioctrl.c +++ b/drivers/char/rio/rioctrl.c @@ -422,7 +422,8 @@ int riocontrol(struct rio_info *p, dev_t dev, int cmd, unsigned long arg, int su } rio_spin_lock_irqsave(&PortP->portSem, flags); - if (RIOPreemptiveCmd(p, (p->RIOPortp[port]), RESUME) == RIO_FAIL) { + if (RIOPreemptiveCmd(p, (p->RIOPortp[port]), RIOC_RESUME) == + RIO_FAIL) { rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME failed\n"); rio_spin_unlock_irqrestore(&PortP->portSem, flags); return -EBUSY; @@ -636,7 +637,8 @@ int riocontrol(struct rio_info *p, dev_t dev, int cmd, unsigned long arg, int su return -ENXIO; } PortP = (p->RIOPortp[PortTty.port]); - RIOParam(PortP, CONFIG, PortP->State & RIO_MODEM, OK_TO_SLEEP); + RIOParam(PortP, RIOC_CONFIG, PortP->State & RIO_MODEM, + OK_TO_SLEEP); return retval; case RIO_SET_PORT_PARAMS: @@ -1247,7 +1249,7 @@ int riocontrol(struct rio_info *p, dev_t dev, int cmd, unsigned long arg, int su rio_spin_lock_irqsave(&PortP->portSem, flags); - if (RIOPreemptiveCmd(p, PortP, MEMDUMP) == RIO_FAIL) { + if (RIOPreemptiveCmd(p, PortP, RIOC_MEMDUMP) == RIO_FAIL) { rio_dprintk(RIO_DEBUG_CTRL, "RIO_MEM_DUMP failed\n"); rio_spin_unlock_irqrestore(&PortP->portSem, flags); return -EBUSY; @@ -1313,7 +1315,8 @@ int riocontrol(struct rio_info *p, dev_t dev, int cmd, unsigned long arg, int su rio_spin_lock_irqsave(&PortP->portSem, flags); - if (RIOPreemptiveCmd(p, PortP, READ_REGISTER) == RIO_FAIL) { + if (RIOPreemptiveCmd(p, PortP, RIOC_READ_REGISTER) == + RIO_FAIL) { rio_dprintk(RIO_DEBUG_CTRL, "RIO_READ_REGISTER failed\n"); rio_spin_unlock_irqrestore(&PortP->portSem, flags); return -EBUSY; @@ -1434,50 +1437,50 @@ int RIOPreemptiveCmd(struct rio_info *p, struct Port *PortP, u8 Cmd) PktCmdP->PhbNum = port; switch (Cmd) { - case MEMDUMP: + case RIOC_MEMDUMP: rio_dprintk(RIO_DEBUG_CTRL, "Queue MEMDUMP command blk %p " "(addr 0x%x)\n", CmdBlkP, (int) SubCmd.Addr); - PktCmdP->SubCommand = MEMDUMP; + PktCmdP->SubCommand = RIOC_MEMDUMP; PktCmdP->SubAddr = SubCmd.Addr; break; - case FCLOSE: + case RIOC_FCLOSE: rio_dprintk(RIO_DEBUG_CTRL, "Queue FCLOSE command blk %p\n", CmdBlkP); break; - case READ_REGISTER: + case RIOC_READ_REGISTER: rio_dprintk(RIO_DEBUG_CTRL, "Queue READ_REGISTER (0x%x) " "command blk %p\n", (int) SubCmd.Addr, CmdBlkP); - PktCmdP->SubCommand = READ_REGISTER; + PktCmdP->SubCommand = RIOC_READ_REGISTER; PktCmdP->SubAddr = SubCmd.Addr; break; - case RESUME: + case RIOC_RESUME: rio_dprintk(RIO_DEBUG_CTRL, "Queue RESUME command blk %p\n", CmdBlkP); break; - case RFLUSH: + case RIOC_RFLUSH: rio_dprintk(RIO_DEBUG_CTRL, "Queue RFLUSH command blk %p\n", CmdBlkP); CmdBlkP->PostFuncP = RIORFlushEnable; break; - case SUSPEND: + case RIOC_SUSPEND: rio_dprintk(RIO_DEBUG_CTRL, "Queue SUSPEND command blk %p\n", CmdBlkP); break; - case MGET: + case RIOC_MGET: rio_dprintk(RIO_DEBUG_CTRL, "Queue MGET command blk %p\n", CmdBlkP); break; - case MSET: - case MBIC: - case MBIS: + case RIOC_MSET: + case RIOC_MBIC: + case RIOC_MBIS: CmdBlkP->Packet.data[4] = (char) PortP->ModemLines; rio_dprintk(RIO_DEBUG_CTRL, "Queue MSET/MBIC/MBIS command " "blk %p\n", CmdBlkP); break; - case WFLUSH: + case RIOC_WFLUSH: /* ** If we have queued up the maximum number of Write flushes ** allowed then we should not bother sending any more to the diff --git a/drivers/char/rio/riointr.c b/drivers/char/rio/riointr.c index 4734e26e1cc..ea21686c69a 100644 --- a/drivers/char/rio/riointr.c +++ b/drivers/char/rio/riointr.c @@ -401,9 +401,8 @@ void RIOServiceHost(struct rio_info *p, struct Host *HostP) PortP->InUse = NOT_INUSE; rio_spin_unlock(&PortP->portSem); - if (RIOParam(PortP, OPEN, ((PortP->Cor2Copy & (COR2_RTSFLOW | COR2_CTSFLOW)) == (COR2_RTSFLOW | COR2_CTSFLOW)) ? 1 : 0, DONT_SLEEP) == RIO_FAIL) { + if (RIOParam(PortP, RIOC_OPEN, ((PortP->Cor2Copy & (RIOC_COR2_RTSFLOW | RIOC_COR2_CTSFLOW)) == (RIOC_COR2_RTSFLOW | RIOC_COR2_CTSFLOW)) ? 1 : 0, DONT_SLEEP) == RIO_FAIL) continue; /* with next port */ - } rio_spin_lock(&PortP->portSem); PortP->MagicFlags &= ~MAGIC_REBOOT; } @@ -429,7 +428,7 @@ void RIOServiceHost(struct rio_info *p, struct Host *HostP) */ PktCmdP = (struct PktCmd __iomem *) &PacketP->data[0]; - writeb(WFLUSH, &PktCmdP->Command); + writeb(RIOC_WFLUSH, &PktCmdP->Command); p = PortP->HostPort % (u16) PORTS_PER_RTA; diff --git a/drivers/char/rio/rioparam.c b/drivers/char/rio/rioparam.c index da276ed57b3..4810b845cc2 100644 --- a/drivers/char/rio/rioparam.c +++ b/drivers/char/rio/rioparam.c @@ -177,7 +177,7 @@ int RIOParam(struct Port *PortP, int cmd, int Modem, int SleepFlag) } rio_spin_lock_irqsave(&PortP->portSem, flags); - if (cmd == OPEN) { + if (cmd == RIOC_OPEN) { /* ** If the port is set to store or lock the parameters, and it is ** paramed with OPEN, we want to restore the saved port termio, but @@ -241,50 +241,50 @@ int RIOParam(struct Port *PortP, int cmd, int Modem, int SleepFlag) case CS5: { rio_dprintk(RIO_DEBUG_PARAM, "5 bit data\n"); - Cor1 |= COR1_5BITS; + Cor1 |= RIOC_COR1_5BITS; break; } case CS6: { rio_dprintk(RIO_DEBUG_PARAM, "6 bit data\n"); - Cor1 |= COR1_6BITS; + Cor1 |= RIOC_COR1_6BITS; break; } case CS7: { rio_dprintk(RIO_DEBUG_PARAM, "7 bit data\n"); - Cor1 |= COR1_7BITS; + Cor1 |= RIOC_COR1_7BITS; break; } case CS8: { rio_dprintk(RIO_DEBUG_PARAM, "8 bit data\n"); - Cor1 |= COR1_8BITS; + Cor1 |= RIOC_COR1_8BITS; break; } } if (TtyP->termios->c_cflag & CSTOPB) { rio_dprintk(RIO_DEBUG_PARAM, "2 stop bits\n"); - Cor1 |= COR1_2STOP; + Cor1 |= RIOC_COR1_2STOP; } else { rio_dprintk(RIO_DEBUG_PARAM, "1 stop bit\n"); - Cor1 |= COR1_1STOP; + Cor1 |= RIOC_COR1_1STOP; } if (TtyP->termios->c_cflag & PARENB) { rio_dprintk(RIO_DEBUG_PARAM, "Enable parity\n"); - Cor1 |= COR1_NORMAL; + Cor1 |= RIOC_COR1_NORMAL; } else { rio_dprintk(RIO_DEBUG_PARAM, "Disable parity\n"); - Cor1 |= COR1_NOP; + Cor1 |= RIOC_COR1_NOP; } if (TtyP->termios->c_cflag & PARODD) { rio_dprintk(RIO_DEBUG_PARAM, "Odd parity\n"); - Cor1 |= COR1_ODD; + Cor1 |= RIOC_COR1_ODD; } else { rio_dprintk(RIO_DEBUG_PARAM, "Even parity\n"); - Cor1 |= COR1_EVEN; + Cor1 |= RIOC_COR1_EVEN; } /* @@ -292,11 +292,11 @@ int RIOParam(struct Port *PortP, int cmd, int Modem, int SleepFlag) */ if (TtyP->termios->c_iflag & IXON) { rio_dprintk(RIO_DEBUG_PARAM, "Enable start/stop output control\n"); - Cor2 |= COR2_IXON; + Cor2 |= RIOC_COR2_IXON; } else { if (PortP->Config & RIO_IXON) { rio_dprintk(RIO_DEBUG_PARAM, "Force enable start/stop output control\n"); - Cor2 |= COR2_IXON; + Cor2 |= RIOC_COR2_IXON; } else rio_dprintk(RIO_DEBUG_PARAM, "IXON has been disabled.\n"); } @@ -304,29 +304,29 @@ int RIOParam(struct Port *PortP, int cmd, int Modem, int SleepFlag) if (TtyP->termios->c_iflag & IXANY) { if (PortP->Config & RIO_IXANY) { rio_dprintk(RIO_DEBUG_PARAM, "Enable any key to restart output\n"); - Cor2 |= COR2_IXANY; + Cor2 |= RIOC_COR2_IXANY; } else rio_dprintk(RIO_DEBUG_PARAM, "IXANY has been disabled due to sanity reasons.\n"); } if (TtyP->termios->c_iflag & IXOFF) { rio_dprintk(RIO_DEBUG_PARAM, "Enable start/stop input control 2\n"); - Cor2 |= COR2_IXOFF; + Cor2 |= RIOC_COR2_IXOFF; } if (TtyP->termios->c_cflag & HUPCL) { rio_dprintk(RIO_DEBUG_PARAM, "Hangup on last close\n"); - Cor2 |= COR2_HUPCL; + Cor2 |= RIOC_COR2_HUPCL; } if (C_CRTSCTS(TtyP)) { rio_dprintk(RIO_DEBUG_PARAM, "Rx hardware flow control enabled\n"); - Cor2 |= COR2_CTSFLOW; - Cor2 |= COR2_RTSFLOW; + Cor2 |= RIOC_COR2_CTSFLOW; + Cor2 |= RIOC_COR2_RTSFLOW; } else { rio_dprintk(RIO_DEBUG_PARAM, "Rx hardware flow control disabled\n"); - Cor2 &= ~COR2_CTSFLOW; - Cor2 &= ~COR2_RTSFLOW; + Cor2 &= ~RIOC_COR2_CTSFLOW; + Cor2 &= ~RIOC_COR2_RTSFLOW; } @@ -341,36 +341,36 @@ int RIOParam(struct Port *PortP, int cmd, int Modem, int SleepFlag) */ if (TtyP->termios->c_iflag & IGNBRK) { rio_dprintk(RIO_DEBUG_PARAM, "Ignore break condition\n"); - Cor4 |= COR4_IGNBRK; + Cor4 |= RIOC_COR4_IGNBRK; } if (!(TtyP->termios->c_iflag & BRKINT)) { rio_dprintk(RIO_DEBUG_PARAM, "Break generates NULL condition\n"); - Cor4 |= COR4_NBRKINT; + Cor4 |= RIOC_COR4_NBRKINT; } else { rio_dprintk(RIO_DEBUG_PARAM, "Interrupt on break condition\n"); } if (TtyP->termios->c_iflag & INLCR) { rio_dprintk(RIO_DEBUG_PARAM, "Map newline to carriage return on input\n"); - Cor4 |= COR4_INLCR; + Cor4 |= RIOC_COR4_INLCR; } if (TtyP->termios->c_iflag & IGNCR) { rio_dprintk(RIO_DEBUG_PARAM, "Ignore carriage return on input\n"); - Cor4 |= COR4_IGNCR; + Cor4 |= RIOC_COR4_IGNCR; } if (TtyP->termios->c_iflag & ICRNL) { rio_dprintk(RIO_DEBUG_PARAM, "Map carriage return to newline on input\n"); - Cor4 |= COR4_ICRNL; + Cor4 |= RIOC_COR4_ICRNL; } if (TtyP->termios->c_iflag & IGNPAR) { rio_dprintk(RIO_DEBUG_PARAM, "Ignore characters with parity errors\n"); - Cor4 |= COR4_IGNPAR; + Cor4 |= RIOC_COR4_IGNPAR; } if (TtyP->termios->c_iflag & PARMRK) { rio_dprintk(RIO_DEBUG_PARAM, "Mark parity errors\n"); - Cor4 |= COR4_PARMRK; + Cor4 |= RIOC_COR4_PARMRK; } /* @@ -378,22 +378,22 @@ int RIOParam(struct Port *PortP, int cmd, int Modem, int SleepFlag) ** on reception of a config packet. ** The download code handles the zero baud condition. */ - Cor4 |= COR4_RAISEMOD; + Cor4 |= RIOC_COR4_RAISEMOD; /* ** COR 5 */ - Cor5 = COR5_CMOE; + Cor5 = RIOC_COR5_CMOE; /* ** Set to monitor tbusy/tstop (or not). */ if (PortP->MonitorTstate) - Cor5 |= COR5_TSTATE_ON; + Cor5 |= RIOC_COR5_TSTATE_ON; else - Cor5 |= COR5_TSTATE_OFF; + Cor5 |= RIOC_COR5_TSTATE_OFF; /* ** Could set LNE here if you wanted LNext processing. SVR4 will use it. @@ -401,24 +401,24 @@ int RIOParam(struct Port *PortP, int cmd, int Modem, int SleepFlag) if (TtyP->termios->c_iflag & ISTRIP) { rio_dprintk(RIO_DEBUG_PARAM, "Strip input characters\n"); if (!(PortP->State & RIO_TRIAD_MODE)) { - Cor5 |= COR5_ISTRIP; + Cor5 |= RIOC_COR5_ISTRIP; } } if (TtyP->termios->c_oflag & ONLCR) { rio_dprintk(RIO_DEBUG_PARAM, "Map newline to carriage-return, newline on output\n"); if (PortP->CookMode == COOK_MEDIUM) - Cor5 |= COR5_ONLCR; + Cor5 |= RIOC_COR5_ONLCR; } if (TtyP->termios->c_oflag & OCRNL) { rio_dprintk(RIO_DEBUG_PARAM, "Map carriage return to newline on output\n"); if (PortP->CookMode == COOK_MEDIUM) - Cor5 |= COR5_OCRNL; + Cor5 |= RIOC_COR5_OCRNL; } if ((TtyP->termios->c_oflag & TABDLY) == TAB3) { rio_dprintk(RIO_DEBUG_PARAM, "Tab delay 3 set\n"); if (PortP->CookMode == COOK_MEDIUM) - Cor5 |= COR5_TAB3; + Cor5 |= RIOC_COR5_TAB3; } /* diff --git a/drivers/char/rio/riotty.c b/drivers/char/rio/riotty.c index 1cb8580a161..c99354843be 100644 --- a/drivers/char/rio/riotty.c +++ b/drivers/char/rio/riotty.c @@ -211,7 +211,7 @@ int riotopen(struct tty_struct *tty, struct file *filp) rio_dprintk(RIO_DEBUG_TTY, "Waiting for RIO_CLOSING to go away\n"); if (repeat_this-- <= 0) { rio_dprintk(RIO_DEBUG_TTY, "Waiting for not idle closed broken by signal\n"); - RIOPreemptiveCmd(p, PortP, FCLOSE); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); retval = -EINTR; goto bombout; } @@ -264,7 +264,7 @@ int riotopen(struct tty_struct *tty, struct file *filp) here. If I read the docs correctly the "open" command piggybacks the parameters immediately. -- REW */ - RIOParam(PortP, OPEN, 1, OK_TO_SLEEP); /* Open the port */ + RIOParam(PortP, RIOC_OPEN, 1, OK_TO_SLEEP); /* Open the port */ rio_spin_lock_irqsave(&PortP->portSem, flags); /* @@ -275,7 +275,7 @@ int riotopen(struct tty_struct *tty, struct file *filp) rio_spin_unlock_irqrestore(&PortP->portSem, flags); if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { rio_dprintk(RIO_DEBUG_TTY, "Waiting for open to finish broken by signal\n"); - RIOPreemptiveCmd(p, PortP, FCLOSE); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); func_exit(); return -EINTR; } @@ -297,7 +297,8 @@ int riotopen(struct tty_struct *tty, struct file *filp) ** insert test for carrier here. -- ??? ** I already see that test here. What's the deal? -- REW */ - if ((PortP->gs.tty->termios->c_cflag & CLOCAL) || (PortP->ModemState & MSVR1_CD)) { + if ((PortP->gs.tty->termios->c_cflag & CLOCAL) || + (PortP->ModemState & RIOC_MSVR1_CD)) { rio_dprintk(RIO_DEBUG_TTY, "open(%d) Modem carr on\n", SysPort); /* tp->tm.c_state |= CARR_ON; @@ -325,7 +326,7 @@ int riotopen(struct tty_struct *tty, struct file *filp) ** I think it's OK. -- REW */ rio_dprintk(RIO_DEBUG_TTY, "open(%d) sleeping for carr broken by signal\n", SysPort); - RIOPreemptiveCmd(p, PortP, FCLOSE); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); /* tp->tm.c_state &= ~WOPEN; */ @@ -416,7 +417,7 @@ int riotclose(void *ptr) */ PortP->State &= ~RIO_MOPEN; PortP->State &= ~RIO_CARR_ON; - PortP->ModemState &= ~MSVR1_CD; + PortP->ModemState &= ~RIOC_MSVR1_CD; /* ** If the device was open as both a Modem and a tty line ** then we need to wimp out here, as the port has not really @@ -453,7 +454,7 @@ int riotclose(void *ptr) if (repeat_this-- <= 0) { rv = -EINTR; rio_dprintk(RIO_DEBUG_TTY, "Waiting for not idle closed broken by signal\n"); - RIOPreemptiveCmd(p, PortP, FCLOSE); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); goto close_end; } rio_dprintk(RIO_DEBUG_TTY, "Calling timeout to flush in closing\n"); @@ -492,8 +493,8 @@ int riotclose(void *ptr) /* Can't call RIOShortCommand with the port locked. */ rio_spin_unlock_irqrestore(&PortP->portSem, flags); - if (RIOShortCommand(p, PortP, CLOSE, 1, 0) == RIO_FAIL) { - RIOPreemptiveCmd(p, PortP, FCLOSE); + if (RIOShortCommand(p, PortP, RIOC_CLOSE, 1, 0) == RIO_FAIL) { + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); rio_spin_lock_irqsave(&PortP->portSem, flags); goto close_end; } @@ -503,7 +504,7 @@ int riotclose(void *ptr) try--; if (time_after(jiffies, end_time)) { rio_dprintk(RIO_DEBUG_TTY, "Run out of tries - force the bugger shut!\n"); - RIOPreemptiveCmd(p, PortP, FCLOSE); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); break; } rio_dprintk(RIO_DEBUG_TTY, "Close: PortState:ISOPEN is %d\n", PortP->PortState & PORT_ISOPEN); @@ -515,14 +516,14 @@ int riotclose(void *ptr) } if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { rio_dprintk(RIO_DEBUG_TTY, "RTA EINTR in delay \n"); - RIOPreemptiveCmd(p, PortP, FCLOSE); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); break; } } rio_spin_lock_irqsave(&PortP->portSem, flags); rio_dprintk(RIO_DEBUG_TTY, "Close: try was %d on completion\n", try); - /* RIOPreemptiveCmd(p, PortP, FCLOSE); */ + /* RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); */ /* ** 15.10.1998 ARG - ESIL 0761 part fix diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c index 3f9d0a9ac36..f073c710ab8 100644 --- a/drivers/char/riscom8.c +++ b/drivers/char/riscom8.c @@ -4,9 +4,9 @@ * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) * * This code is loosely based on the Linux serial driver, written by - * Linus Torvalds, Theodore T'so and others. The RISCom/8 card - * programming info was obtained from various drivers for other OSes - * (FreeBSD, ISC, etc), but no source code from those drivers were + * Linus Torvalds, Theodore T'so and others. The RISCom/8 card + * programming info was obtained from various drivers for other OSes + * (FreeBSD, ISC, etc), but no source code from those drivers were * directly included in this driver. * * @@ -33,7 +33,7 @@ #include <linux/module.h> -#include <asm/io.h> +#include <linux/io.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/ioport.h> @@ -49,7 +49,7 @@ #include <linux/tty_flip.h> #include <linux/spinlock.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "riscom8.h" #include "riscom8_reg.h" @@ -57,15 +57,15 @@ /* Am I paranoid or not ? ;-) */ #define RISCOM_PARANOIA_CHECK -/* - * Crazy InteliCom/8 boards sometimes has swapped CTS & DSR signals. +/* + * Crazy InteliCom/8 boards sometimes have swapped CTS & DSR signals. * You can slightly speed up things by #undefing the following option, - * if you are REALLY sure that your board is correct one. + * if you are REALLY sure that your board is correct one. */ #define RISCOM_BRAIN_DAMAGED_CTS -/* +/* * The following defines are mostly for testing purposes. But if you need * some nice reporting in your syslog, you can define them also. */ @@ -112,7 +112,7 @@ static unsigned short rc_ioport[] = { #define RC_NIOPORT ARRAY_SIZE(rc_ioport) -static inline int rc_paranoia_check(struct riscom_port const * port, +static int rc_paranoia_check(struct riscom_port const *port, char *name, const char *routine) { #ifdef RISCOM_PARANOIA_CHECK @@ -134,52 +134,53 @@ static inline int rc_paranoia_check(struct riscom_port const * port, } /* - * + * * Service functions for RISCom/8 driver. - * + * */ /* Get board number from pointer */ -static inline int board_No (struct riscom_board const * bp) +static inline int board_No(struct riscom_board const *bp) { return bp - rc_board; } /* Get port number from pointer */ -static inline int port_No (struct riscom_port const * port) +static inline int port_No(struct riscom_port const *port) { - return RC_PORT(port - rc_port); + return RC_PORT(port - rc_port); } /* Get pointer to board from pointer to port */ -static inline struct riscom_board * port_Board(struct riscom_port const * port) +static inline struct riscom_board *port_Board(struct riscom_port const *port) { return &rc_board[RC_BOARD(port - rc_port)]; } /* Input Byte from CL CD180 register */ -static inline unsigned char rc_in(struct riscom_board const * bp, unsigned short reg) +static inline unsigned char rc_in(struct riscom_board const *bp, + unsigned short reg) { return inb(bp->base + RC_TO_ISA(reg)); } /* Output Byte to CL CD180 register */ -static inline void rc_out(struct riscom_board const * bp, unsigned short reg, +static inline void rc_out(struct riscom_board const *bp, unsigned short reg, unsigned char val) { outb(val, bp->base + RC_TO_ISA(reg)); } /* Wait for Channel Command Register ready */ -static inline void rc_wait_CCR(struct riscom_board const * bp) +static void rc_wait_CCR(struct riscom_board const *bp) { unsigned long delay; /* FIXME: need something more descriptive then 100000 :) */ - for (delay = 100000; delay; delay--) + for (delay = 100000; delay; delay--) if (!rc_in(bp, CD180_CCR)) return; - + printk(KERN_INFO "rc%d: Timeout waiting for CCR.\n", board_No(bp)); } @@ -187,11 +188,11 @@ static inline void rc_wait_CCR(struct riscom_board const * bp) * RISCom/8 probe functions. */ -static inline int rc_request_io_range(struct riscom_board * const bp) +static int rc_request_io_range(struct riscom_board * const bp) { int i; - - for (i = 0; i < RC_NIOPORT; i++) + + for (i = 0; i < RC_NIOPORT; i++) if (!request_region(RC_TO_ISA(rc_ioport[i]) + bp->base, 1, "RISCom/8")) { goto out_release; @@ -200,42 +201,42 @@ static inline int rc_request_io_range(struct riscom_board * const bp) out_release: printk(KERN_INFO "rc%d: Skipping probe at 0x%03x. IO address in use.\n", board_No(bp), bp->base); - while(--i >= 0) + while (--i >= 0) release_region(RC_TO_ISA(rc_ioport[i]) + bp->base, 1); return 1; } -static inline void rc_release_io_range(struct riscom_board * const bp) +static void rc_release_io_range(struct riscom_board * const bp) { int i; - - for (i = 0; i < RC_NIOPORT; i++) + + for (i = 0; i < RC_NIOPORT; i++) release_region(RC_TO_ISA(rc_ioport[i]) + bp->base, 1); } - + /* Reset and setup CD180 chip */ -static void __init rc_init_CD180(struct riscom_board const * bp) +static void __init rc_init_CD180(struct riscom_board const *bp) { unsigned long flags; - + spin_lock_irqsave(&riscom_lock, flags); - rc_out(bp, RC_CTOUT, 0); /* Clear timeout */ - rc_wait_CCR(bp); /* Wait for CCR ready */ - rc_out(bp, CD180_CCR, CCR_HARDRESET); /* Reset CD180 chip */ + rc_out(bp, RC_CTOUT, 0); /* Clear timeout */ + rc_wait_CCR(bp); /* Wait for CCR ready */ + rc_out(bp, CD180_CCR, CCR_HARDRESET); /* Reset CD180 chip */ spin_unlock_irqrestore(&riscom_lock, flags); - msleep(50); /* Delay 0.05 sec */ + msleep(50); /* Delay 0.05 sec */ spin_lock_irqsave(&riscom_lock, flags); - rc_out(bp, CD180_GIVR, RC_ID); /* Set ID for this chip */ - rc_out(bp, CD180_GICR, 0); /* Clear all bits */ - rc_out(bp, CD180_PILR1, RC_ACK_MINT); /* Prio for modem intr */ - rc_out(bp, CD180_PILR2, RC_ACK_TINT); /* Prio for transmitter intr */ - rc_out(bp, CD180_PILR3, RC_ACK_RINT); /* Prio for receiver intr */ - + rc_out(bp, CD180_GIVR, RC_ID); /* Set ID for this chip */ + rc_out(bp, CD180_GICR, 0); /* Clear all bits */ + rc_out(bp, CD180_PILR1, RC_ACK_MINT); /* Prio for modem intr */ + rc_out(bp, CD180_PILR2, RC_ACK_TINT); /* Prio for tx intr */ + rc_out(bp, CD180_PILR3, RC_ACK_RINT); /* Prio for rx intr */ + /* Setting up prescaler. We need 4 ticks per 1 ms */ rc_out(bp, CD180_PPRH, (RC_OSCFREQ/(1000000/RISCOM_TPS)) >> 8); rc_out(bp, CD180_PPRL, (RC_OSCFREQ/(1000000/RISCOM_TPS)) & 0xff); - + spin_unlock_irqrestore(&riscom_lock, flags); } @@ -245,12 +246,12 @@ static int __init rc_probe(struct riscom_board *bp) unsigned char val1, val2; int irqs = 0; int retries; - + bp->irq = 0; if (rc_request_io_range(bp)) return 1; - + /* Are the I/O ports here ? */ rc_out(bp, CD180_PPRL, 0x5a); outb(0xff, 0x80); @@ -258,34 +259,34 @@ static int __init rc_probe(struct riscom_board *bp) rc_out(bp, CD180_PPRL, 0xa5); outb(0x00, 0x80); val2 = rc_in(bp, CD180_PPRL); - + if ((val1 != 0x5a) || (val2 != 0xa5)) { printk(KERN_ERR "rc%d: RISCom/8 Board at 0x%03x not found.\n", board_No(bp), bp->base); goto out_release; } - + /* It's time to find IRQ for this board */ - for (retries = 0; retries < 5 && irqs <= 0; retries++) { + for (retries = 0; retries < 5 && irqs <= 0; retries++) { irqs = probe_irq_on(); - rc_init_CD180(bp); /* Reset CD180 chip */ - rc_out(bp, CD180_CAR, 2); /* Select port 2 */ + rc_init_CD180(bp); /* Reset CD180 chip */ + rc_out(bp, CD180_CAR, 2); /* Select port 2 */ rc_wait_CCR(bp); - rc_out(bp, CD180_CCR, CCR_TXEN); /* Enable transmitter */ - rc_out(bp, CD180_IER, IER_TXRDY); /* Enable tx empty intr */ + rc_out(bp, CD180_CCR, CCR_TXEN); /* Enable transmitter */ + rc_out(bp, CD180_IER, IER_TXRDY);/* Enable tx empty intr */ msleep(50); irqs = probe_irq_off(irqs); - val1 = rc_in(bp, RC_BSR); /* Get Board Status reg */ - val2 = rc_in(bp, RC_ACK_TINT); /* ACK interrupt */ - rc_init_CD180(bp); /* Reset CD180 again */ - + val1 = rc_in(bp, RC_BSR); /* Get Board Status reg */ + val2 = rc_in(bp, RC_ACK_TINT); /* ACK interrupt */ + rc_init_CD180(bp); /* Reset CD180 again */ + if ((val1 & RC_BSR_TINT) || (val2 != (RC_ID | GIVR_IT_TX))) { printk(KERN_ERR "rc%d: RISCom/8 Board at 0x%03x not " "found.\n", board_No(bp), bp->base); goto out_release; } } - + if (irqs <= 0) { printk(KERN_ERR "rc%d: Can't find IRQ for RISCom/8 board " "at 0x%03x.\n", board_No(bp), bp->base); @@ -293,113 +294,112 @@ static int __init rc_probe(struct riscom_board *bp) } bp->irq = irqs; bp->flags |= RC_BOARD_PRESENT; - + printk(KERN_INFO "rc%d: RISCom/8 Rev. %c board detected at " "0x%03x, IRQ %d.\n", board_No(bp), (rc_in(bp, CD180_GFRCR) & 0x0f) + 'A', /* Board revision */ bp->base, bp->irq); - + return 0; out_release: rc_release_io_range(bp); return 1; } -/* - * +/* + * * Interrupt processing routines. - * + * */ -static inline struct riscom_port * rc_get_port(struct riscom_board const * bp, - unsigned char const * what) +static struct riscom_port *rc_get_port(struct riscom_board const *bp, + unsigned char const *what) { unsigned char channel; - struct riscom_port * port; - + struct riscom_port *port; + channel = rc_in(bp, CD180_GICR) >> GICR_CHAN_OFF; if (channel < CD180_NCH) { port = &rc_port[board_No(bp) * RC_NPORT + channel]; - if (port->flags & ASYNC_INITIALIZED) { + if (port->flags & ASYNC_INITIALIZED) return port; - } } - printk(KERN_ERR "rc%d: %s interrupt from invalid port %d\n", + printk(KERN_ERR "rc%d: %s interrupt from invalid port %d\n", board_No(bp), what, channel); return NULL; } -static inline void rc_receive_exc(struct riscom_board const * bp) +static void rc_receive_exc(struct riscom_board const *bp) { struct riscom_port *port; struct tty_struct *tty; unsigned char status; unsigned char ch, flag; - - if (!(port = rc_get_port(bp, "Receive"))) + + port = rc_get_port(bp, "Receive"); + if (port == NULL) return; tty = port->tty; - -#ifdef RC_REPORT_OVERRUN + +#ifdef RC_REPORT_OVERRUN status = rc_in(bp, CD180_RCSR); if (status & RCSR_OE) port->overrun++; status &= port->mark_mask; -#else +#else status = rc_in(bp, CD180_RCSR) & port->mark_mask; -#endif +#endif ch = rc_in(bp, CD180_RDR); - if (!status) { + if (!status) return; - } if (status & RCSR_TOUT) { printk(KERN_WARNING "rc%d: port %d: Receiver timeout. " - "Hardware problems ?\n", + "Hardware problems ?\n", board_No(bp), port_No(port)); return; - + } else if (status & RCSR_BREAK) { printk(KERN_INFO "rc%d: port %d: Handling break...\n", board_No(bp), port_No(port)); flag = TTY_BREAK; if (port->flags & ASYNC_SAK) do_SAK(tty); - - } else if (status & RCSR_PE) + + } else if (status & RCSR_PE) flag = TTY_PARITY; - - else if (status & RCSR_FE) + + else if (status & RCSR_FE) flag = TTY_FRAME; - - else if (status & RCSR_OE) + + else if (status & RCSR_OE) flag = TTY_OVERRUN; - else flag = TTY_NORMAL; - + tty_insert_flip_char(tty, ch, flag); tty_flip_buffer_push(tty); } -static inline void rc_receive(struct riscom_board const * bp) +static void rc_receive(struct riscom_board const *bp) { struct riscom_port *port; struct tty_struct *tty; unsigned char count; - - if (!(port = rc_get_port(bp, "Receive"))) + + port = rc_get_port(bp, "Receive"); + if (port == NULL) return; - + tty = port->tty; - + count = rc_in(bp, CD180_RDCR); - + #ifdef RC_REPORT_FIFO port->hits[count > 8 ? 9 : count]++; -#endif - +#endif + while (count--) { if (tty_buffer_request_room(tty, 1) == 0) { printk(KERN_WARNING "rc%d: port %d: Working around " @@ -412,26 +412,26 @@ static inline void rc_receive(struct riscom_board const * bp) tty_flip_buffer_push(tty); } -static inline void rc_transmit(struct riscom_board const * bp) +static void rc_transmit(struct riscom_board const *bp) { struct riscom_port *port; struct tty_struct *tty; unsigned char count; - - - if (!(port = rc_get_port(bp, "Transmit"))) + + port = rc_get_port(bp, "Transmit"); + if (port == NULL) return; - + tty = port->tty; - - if (port->IER & IER_TXEMPTY) { + + if (port->IER & IER_TXEMPTY) { /* FIFO drained */ rc_out(bp, CD180_CAR, port_No(port)); port->IER &= ~IER_TXEMPTY; rc_out(bp, CD180_IER, port->IER); return; } - + if ((port->xmit_cnt <= 0 && !port->break_length) || tty->stopped || tty->hw_stopped) { rc_out(bp, CD180_CAR, port_No(port)); @@ -439,7 +439,7 @@ static inline void rc_transmit(struct riscom_board const * bp) rc_out(bp, CD180_IER, port->IER); return; } - + if (port->break_length) { if (port->break_length > 0) { if (port->COR2 & COR2_ETC) { @@ -451,7 +451,8 @@ static inline void rc_transmit(struct riscom_board const * bp) rc_out(bp, CD180_TDR, CD180_C_ESC); rc_out(bp, CD180_TDR, CD180_C_DELAY); rc_out(bp, CD180_TDR, count); - if (!(port->break_length -= count)) + port->break_length -= count; + if (port->break_length == 0) port->break_length--; } else { rc_out(bp, CD180_TDR, CD180_C_ESC); @@ -463,7 +464,7 @@ static inline void rc_transmit(struct riscom_board const * bp) } return; } - + count = CD180_NFIFO; do { rc_out(bp, CD180_TDR, port->xmit_buf[port->xmit_tail++]); @@ -471,7 +472,7 @@ static inline void rc_transmit(struct riscom_board const * bp) if (--port->xmit_cnt <= 0) break; } while (--count > 0); - + if (port->xmit_cnt <= 0) { rc_out(bp, CD180_CAR, port_No(port)); port->IER &= ~IER_TXRDY; @@ -481,25 +482,26 @@ static inline void rc_transmit(struct riscom_board const * bp) tty_wakeup(tty); } -static inline void rc_check_modem(struct riscom_board const * bp) +static void rc_check_modem(struct riscom_board const *bp) { struct riscom_port *port; struct tty_struct *tty; unsigned char mcr; - - if (!(port = rc_get_port(bp, "Modem"))) + + port = rc_get_port(bp, "Modem"); + if (port == NULL) return; - + tty = port->tty; - + mcr = rc_in(bp, CD180_MCR); - if (mcr & MCR_CDCHG) { - if (rc_in(bp, CD180_MSVR) & MSVR_CD) + if (mcr & MCR_CDCHG) { + if (rc_in(bp, CD180_MSVR) & MSVR_CD) wake_up_interruptible(&port->open_wait); else tty_hangup(tty); } - + #ifdef RISCOM_BRAIN_DAMAGED_CTS if (mcr & MCR_CTSCHG) { if (rc_in(bp, CD180_MSVR) & MSVR_CTS) { @@ -526,13 +528,13 @@ static inline void rc_check_modem(struct riscom_board const * bp) rc_out(bp, CD180_IER, port->IER); } #endif /* RISCOM_BRAIN_DAMAGED_CTS */ - + /* Clear change bits */ rc_out(bp, CD180_MCR, 0); } /* The main interrupt processing routine */ -static irqreturn_t rc_interrupt(int dummy, void * dev_id) +static irqreturn_t rc_interrupt(int dummy, void *dev_id) { unsigned char status; unsigned char ack; @@ -547,13 +549,11 @@ static irqreturn_t rc_interrupt(int dummy, void * dev_id) (RC_BSR_TOUT | RC_BSR_TINT | RC_BSR_MINT | RC_BSR_RINT))) { handled = 1; - if (status & RC_BSR_TOUT) + if (status & RC_BSR_TOUT) printk(KERN_WARNING "rc%d: Got timeout. Hardware " "error?\n", board_No(bp)); - else if (status & RC_BSR_RINT) { ack = rc_in(bp, RC_ACK_RINT); - if (ack == (RC_ID | GIVR_IT_RCV)) rc_receive(bp); else if (ack == (RC_ID | GIVR_IT_REXC)) @@ -562,29 +562,23 @@ static irqreturn_t rc_interrupt(int dummy, void * dev_id) printk(KERN_WARNING "rc%d: Bad receive ack " "0x%02x.\n", board_No(bp), ack); - } else if (status & RC_BSR_TINT) { ack = rc_in(bp, RC_ACK_TINT); - if (ack == (RC_ID | GIVR_IT_TX)) rc_transmit(bp); else printk(KERN_WARNING "rc%d: Bad transmit ack " "0x%02x.\n", board_No(bp), ack); - } else /* if (status & RC_BSR_MINT) */ { ack = rc_in(bp, RC_ACK_MINT); - - if (ack == (RC_ID | GIVR_IT_MODEM)) + if (ack == (RC_ID | GIVR_IT_MODEM)) rc_check_modem(bp); else printk(KERN_WARNING "rc%d: Bad modem ack " "0x%02x.\n", board_No(bp), ack); - - } - + } rc_out(bp, CD180_EOIR, 0); /* Mark end of interrupt */ rc_out(bp, RC_CTOUT, 0); /* Clear timeout flag */ } @@ -596,24 +590,24 @@ static irqreturn_t rc_interrupt(int dummy, void * dev_id) */ /* Called with disabled interrupts */ -static int rc_setup_board(struct riscom_board * bp) +static int rc_setup_board(struct riscom_board *bp) { int error; - if (bp->flags & RC_BOARD_ACTIVE) + if (bp->flags & RC_BOARD_ACTIVE) return 0; - + error = request_irq(bp->irq, rc_interrupt, IRQF_DISABLED, "RISCom/8", bp); - if (error) + if (error) return error; - + rc_out(bp, RC_CTOUT, 0); /* Just in case */ bp->DTR = ~0; rc_out(bp, RC_DTR, bp->DTR); /* Drop DTR on all ports */ - + bp->flags |= RC_BOARD_ACTIVE; - + return 0; } @@ -622,40 +616,40 @@ static void rc_shutdown_board(struct riscom_board *bp) { if (!(bp->flags & RC_BOARD_ACTIVE)) return; - + bp->flags &= ~RC_BOARD_ACTIVE; - + free_irq(bp->irq, NULL); - + bp->DTR = ~0; rc_out(bp, RC_DTR, bp->DTR); /* Drop DTR on all ports */ - + } /* - * Setting up port characteristics. + * Setting up port characteristics. * Must be called with disabled interrupts */ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port) { - struct tty_struct *tty; + struct tty_struct *tty = port->tty; unsigned long baud; long tmp; unsigned char cor1 = 0, cor3 = 0; unsigned char mcor1 = 0, mcor2 = 0; - - if (!(tty = port->tty) || !tty->termios) + + if (tty == NULL || tty->termios == NULL) return; port->IER = 0; port->COR2 = 0; port->MSVR = MSVR_RTS; - + baud = tty_get_baud_rate(tty); - + /* Select port on the board */ rc_out(bp, CD180_CAR, port_No(port)); - + if (!baud) { /* Drop DTR & exit */ bp->DTR |= (1u << port_No(port)); @@ -666,69 +660,68 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port) bp->DTR &= ~(1u << port_No(port)); rc_out(bp, RC_DTR, bp->DTR); } - + /* - * Now we must calculate some speed depended things + * Now we must calculate some speed depended things */ - + /* Set baud rate for port */ tmp = (((RC_OSCFREQ + baud/2) / baud + CD180_TPC/2) / CD180_TPC); - rc_out(bp, CD180_RBPRH, (tmp >> 8) & 0xff); - rc_out(bp, CD180_TBPRH, (tmp >> 8) & 0xff); - rc_out(bp, CD180_RBPRL, tmp & 0xff); + rc_out(bp, CD180_RBPRH, (tmp >> 8) & 0xff); + rc_out(bp, CD180_TBPRH, (tmp >> 8) & 0xff); + rc_out(bp, CD180_RBPRL, tmp & 0xff); rc_out(bp, CD180_TBPRL, tmp & 0xff); - + baud = (baud + 5) / 10; /* Estimated CPS */ - + /* Two timer ticks seems enough to wakeup something like SLIP driver */ - tmp = ((baud + HZ/2) / HZ) * 2 - CD180_NFIFO; + tmp = ((baud + HZ/2) / HZ) * 2 - CD180_NFIFO; port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ? SERIAL_XMIT_SIZE - 1 : tmp); - + /* Receiver timeout will be transmission time for 1.5 chars */ tmp = (RISCOM_TPS + RISCOM_TPS/2 + baud/2) / baud; tmp = (tmp > 0xff) ? 0xff : tmp; rc_out(bp, CD180_RTPR, tmp); - - switch (C_CSIZE(tty)) { - case CS5: + + switch (C_CSIZE(tty)) { + case CS5: cor1 |= COR1_5BITS; break; - case CS6: + case CS6: cor1 |= COR1_6BITS; break; - case CS7: + case CS7: cor1 |= COR1_7BITS; break; - case CS8: + case CS8: cor1 |= COR1_8BITS; break; } - - if (C_CSTOPB(tty)) + if (C_CSTOPB(tty)) cor1 |= COR1_2SB; - + cor1 |= COR1_IGNORE; - if (C_PARENB(tty)) { + if (C_PARENB(tty)) { cor1 |= COR1_NORMPAR; - if (C_PARODD(tty)) + if (C_PARODD(tty)) cor1 |= COR1_ODDP; - if (I_INPCK(tty)) + if (I_INPCK(tty)) cor1 &= ~COR1_IGNORE; } /* Set marking of some errors */ port->mark_mask = RCSR_OE | RCSR_TOUT; - if (I_INPCK(tty)) + if (I_INPCK(tty)) port->mark_mask |= RCSR_FE | RCSR_PE; - if (I_BRKINT(tty) || I_PARMRK(tty)) + if (I_BRKINT(tty) || I_PARMRK(tty)) port->mark_mask |= RCSR_BREAK; - if (I_IGNPAR(tty)) + if (I_IGNPAR(tty)) port->mark_mask &= ~(RCSR_FE | RCSR_PE); - if (I_IGNBRK(tty)) { + if (I_IGNBRK(tty)) { port->mark_mask &= ~RCSR_BREAK; - if (I_IGNPAR(tty)) + if (I_IGNPAR(tty)) /* Real raw mode. Ignore all */ port->mark_mask &= ~RCSR_OE; } @@ -738,7 +731,8 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port) port->IER |= IER_DSR | IER_CTS; mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD; mcor2 |= MCOR2_DSROD | MCOR2_CTSOD; - tty->hw_stopped = !(rc_in(bp, CD180_MSVR) & (MSVR_CTS|MSVR_DSR)); + tty->hw_stopped = !(rc_in(bp, CD180_MSVR) & + (MSVR_CTS|MSVR_DSR)); #else port->COR2 |= COR2_CTSAE; #endif @@ -761,13 +755,13 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port) mcor1 |= MCOR1_CDZD; mcor2 |= MCOR2_CDOD; } - - if (C_CREAD(tty)) + + if (C_CREAD(tty)) /* Enable receiver */ port->IER |= IER_RXD; - + /* Set input FIFO size (1-8 bytes) */ - cor3 |= RISCOM_RXFIFO; + cor3 |= RISCOM_RXFIFO; /* Setting up CD180 channel registers */ rc_out(bp, CD180_COR1, cor1); rc_out(bp, CD180_COR2, port->COR2); @@ -791,36 +785,30 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port) static int rc_setup_port(struct riscom_board *bp, struct riscom_port *port) { unsigned long flags; - + if (port->flags & ASYNC_INITIALIZED) return 0; - + if (!port->xmit_buf) { /* We may sleep in get_zeroed_page() */ - unsigned long tmp; - - if (!(tmp = get_zeroed_page(GFP_KERNEL))) + unsigned long tmp = get_zeroed_page(GFP_KERNEL); + if (tmp == 0) return -ENOMEM; - - if (port->xmit_buf) { + if (port->xmit_buf) free_page(tmp); - return -ERESTARTSYS; - } - port->xmit_buf = (unsigned char *) tmp; + else + port->xmit_buf = (unsigned char *) tmp; } - spin_lock_irqsave(&riscom_lock, flags); - if (port->tty) + if (port->tty) clear_bit(TTY_IO_ERROR, &port->tty->flags); - - if (port->count == 1) + if (port->count == 1) bp->count++; - port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; rc_change_speed(bp, port); port->flags |= ASYNC_INITIALIZED; - + spin_unlock_irqrestore(&riscom_lock, flags); return 0; } @@ -829,38 +817,39 @@ static int rc_setup_port(struct riscom_board *bp, struct riscom_port *port) static void rc_shutdown_port(struct riscom_board *bp, struct riscom_port *port) { struct tty_struct *tty; - - if (!(port->flags & ASYNC_INITIALIZED)) + + if (!(port->flags & ASYNC_INITIALIZED)) return; - + #ifdef RC_REPORT_OVERRUN printk(KERN_INFO "rc%d: port %d: Total %ld overruns were detected.\n", board_No(bp), port_No(port), port->overrun); -#endif +#endif #ifdef RC_REPORT_FIFO { int i; - + printk(KERN_INFO "rc%d: port %d: FIFO hits [ ", board_No(bp), port_No(port)); - for (i = 0; i < 10; i++) { + for (i = 0; i < 10; i++) printk("%ld ", port->hits[i]); - } printk("].\n"); } -#endif +#endif if (port->xmit_buf) { free_page((unsigned long) port->xmit_buf); port->xmit_buf = NULL; } - if (!(tty = port->tty) || C_HUPCL(tty)) { + tty = port->tty; + + if (tty == NULL || C_HUPCL(tty)) { /* Drop DTR */ bp->DTR |= (1u << port_No(port)); rc_out(bp, RC_DTR, bp->DTR); } - - /* Select port */ + + /* Select port */ rc_out(bp, CD180_CAR, port_No(port)); /* Reset port */ rc_wait_CCR(bp); @@ -868,28 +857,26 @@ static void rc_shutdown_port(struct riscom_board *bp, struct riscom_port *port) /* Disable all interrupts from this port */ port->IER = 0; rc_out(bp, CD180_IER, port->IER); - - if (tty) + + if (tty) set_bit(TTY_IO_ERROR, &tty->flags); port->flags &= ~ASYNC_INITIALIZED; - + if (--bp->count < 0) { printk(KERN_INFO "rc%d: rc_shutdown_port: " "bad board count: %d\n", board_No(bp), bp->count); bp->count = 0; } - /* * If this is the last opened port on the board * shutdown whole board */ - if (!bp->count) + if (!bp->count) rc_shutdown_board(bp); } - -static int block_til_ready(struct tty_struct *tty, struct file * filp, +static int block_til_ready(struct tty_struct *tty, struct file *filp, struct riscom_port *port) { DECLARE_WAITQUEUE(wait, current); @@ -921,7 +908,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, return 0; } - if (C_CLOCAL(tty)) + if (C_CLOCAL(tty)) do_clocal = 1; /* @@ -959,7 +946,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, if (port->flags & ASYNC_HUP_NOTIFY) retval = -EAGAIN; else - retval = -ERESTARTSYS; + retval = -ERESTARTSYS; break; } if (!(port->flags & ASYNC_CLOSING) && @@ -978,50 +965,63 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, port->blocked_open--; if (retval) return retval; - + port->flags |= ASYNC_NORMAL_ACTIVE; return 0; -} +} -static int rc_open(struct tty_struct * tty, struct file * filp) +static int rc_open(struct tty_struct *tty, struct file *filp) { int board; int error; - struct riscom_port * port; - struct riscom_board * bp; - + struct riscom_port *port; + struct riscom_board *bp; + board = RC_BOARD(tty->index); if (board >= RC_NBOARD || !(rc_board[board].flags & RC_BOARD_PRESENT)) return -ENODEV; - + bp = &rc_board[board]; port = rc_port + board * RC_NPORT + RC_PORT(tty->index); if (rc_paranoia_check(port, tty->name, "rc_open")) return -ENODEV; - - if ((error = rc_setup_board(bp))) + + error = rc_setup_board(bp); + if (error) return error; - + port->count++; tty->driver_data = port; port->tty = tty; - - if ((error = rc_setup_port(bp, port))) - return error; - - if ((error = block_til_ready(tty, filp, port))) - return error; - - return 0; + + error = rc_setup_port(bp, port); + if (error == 0) + error = block_til_ready(tty, filp, port); + return error; } -static void rc_close(struct tty_struct * tty, struct file * filp) +static void rc_flush_buffer(struct tty_struct *tty) +{ + struct riscom_port *port = (struct riscom_port *)tty->driver_data; + unsigned long flags; + + if (rc_paranoia_check(port, tty->name, "rc_flush_buffer")) + return; + + spin_lock_irqsave(&riscom_lock, flags); + port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; + spin_unlock_irqrestore(&riscom_lock, flags); + + tty_wakeup(tty); +} + +static void rc_close(struct tty_struct *tty, struct file *filp) { struct riscom_port *port = (struct riscom_port *) tty->driver_data; struct riscom_board *bp; unsigned long flags; unsigned long timeout; - + if (!port || rc_paranoia_check(port, tty->name, "close")) return; @@ -1029,7 +1029,7 @@ static void rc_close(struct tty_struct * tty, struct file * filp) if (tty_hung_up_p(filp)) goto out; - + bp = port_Board(port); if ((tty->count == 1) && (port->count != 1)) { printk(KERN_INFO "rc%d: rc_close: bad port count;" @@ -1047,7 +1047,7 @@ static void rc_close(struct tty_struct * tty, struct file * filp) goto out; port->flags |= ASYNC_CLOSING; /* - * Now we wait for the transmit buffer to clear; and we notify + * Now we wait for the transmit buffer to clear; and we notify * the line discipline to only process XON/XOFF characters. */ tty->closing = 1; @@ -1070,24 +1070,22 @@ static void rc_close(struct tty_struct * tty, struct file * filp) * has completely drained; this is especially * important if there is a transmit FIFO! */ - timeout = jiffies+HZ; - while(port->IER & IER_TXEMPTY) { + timeout = jiffies + HZ; + while (port->IER & IER_TXEMPTY) { msleep_interruptible(jiffies_to_msecs(port->timeout)); if (time_after(jiffies, timeout)) break; } } rc_shutdown_port(bp, port); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + rc_flush_buffer(tty); tty_ldisc_flush(tty); tty->closing = 0; port->tty = NULL; if (port->blocked_open) { - if (port->close_delay) { + if (port->close_delay) msleep_interruptible(jiffies_to_msecs(port->close_delay)); - } wake_up_interruptible(&port->open_wait); } port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); @@ -1097,17 +1095,17 @@ out: spin_unlock_irqrestore(&riscom_lock, flags); } -static int rc_write(struct tty_struct * tty, +static int rc_write(struct tty_struct *tty, const unsigned char *buf, int count) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; struct riscom_board *bp; int c, total = 0; unsigned long flags; - + if (rc_paranoia_check(port, tty->name, "rc_write")) return 0; - + bp = port_Board(port); if (!tty || !port->xmit_buf) @@ -1144,38 +1142,41 @@ static int rc_write(struct tty_struct * tty, return total; } -static void rc_put_char(struct tty_struct * tty, unsigned char ch) +static int rc_put_char(struct tty_struct *tty, unsigned char ch) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; unsigned long flags; + int ret = 0; if (rc_paranoia_check(port, tty->name, "rc_put_char")) - return; + return 0; if (!tty || !port->xmit_buf) - return; + return 0; spin_lock_irqsave(&riscom_lock, flags); - + if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) goto out; port->xmit_buf[port->xmit_head++] = ch; port->xmit_head &= SERIAL_XMIT_SIZE - 1; port->xmit_cnt++; + ret = 1; out: spin_unlock_irqrestore(&riscom_lock, flags); + return ret; } -static void rc_flush_chars(struct tty_struct * tty) +static void rc_flush_chars(struct tty_struct *tty) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; unsigned long flags; - + if (rc_paranoia_check(port, tty->name, "rc_flush_chars")) return; - + if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || !port->xmit_buf) return; @@ -1189,11 +1190,11 @@ static void rc_flush_chars(struct tty_struct * tty) spin_unlock_irqrestore(&riscom_lock, flags); } -static int rc_write_room(struct tty_struct * tty) +static int rc_write_room(struct tty_struct *tty) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; int ret; - + if (rc_paranoia_check(port, tty->name, "rc_write_room")) return 0; @@ -1206,39 +1207,22 @@ static int rc_write_room(struct tty_struct * tty) static int rc_chars_in_buffer(struct tty_struct *tty) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; - + if (rc_paranoia_check(port, tty->name, "rc_chars_in_buffer")) return 0; - - return port->xmit_cnt; -} - -static void rc_flush_buffer(struct tty_struct *tty) -{ - struct riscom_port *port = (struct riscom_port *)tty->driver_data; - unsigned long flags; - - if (rc_paranoia_check(port, tty->name, "rc_flush_buffer")) - return; - - spin_lock_irqsave(&riscom_lock, flags); - - port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; - spin_unlock_irqrestore(&riscom_lock, flags); - - tty_wakeup(tty); + return port->xmit_cnt; } static int rc_tiocmget(struct tty_struct *tty, struct file *file) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; - struct riscom_board * bp; + struct riscom_board *bp; unsigned char status; unsigned int result; unsigned long flags; - if (rc_paranoia_check(port, tty->name, __FUNCTION__)) + if (rc_paranoia_check(port, tty->name, __func__)) return -ENODEV; bp = port_Board(port); @@ -1266,7 +1250,7 @@ static int rc_tiocmset(struct tty_struct *tty, struct file *file, unsigned long flags; struct riscom_board *bp; - if (rc_paranoia_check(port, tty->name, __FUNCTION__)) + if (rc_paranoia_check(port, tty->name, __func__)) return -ENODEV; bp = port_Board(port); @@ -1292,11 +1276,11 @@ static int rc_tiocmset(struct tty_struct *tty, struct file *file, return 0; } -static inline void rc_send_break(struct riscom_port * port, unsigned long length) +static void rc_send_break(struct riscom_port *port, unsigned long length) { struct riscom_board *bp = port_Board(port); unsigned long flags; - + spin_lock_irqsave(&riscom_lock, flags); port->break_length = RISCOM_TPS / HZ * length; @@ -1312,17 +1296,17 @@ static inline void rc_send_break(struct riscom_port * port, unsigned long length spin_unlock_irqrestore(&riscom_lock, flags); } -static inline int rc_set_serial_info(struct riscom_port * port, - struct serial_struct __user * newinfo) +static int rc_set_serial_info(struct riscom_port *port, + struct serial_struct __user *newinfo) { struct serial_struct tmp; struct riscom_board *bp = port_Board(port); int change_speed; - + if (copy_from_user(&tmp, newinfo, sizeof(tmp))) return -EFAULT; - -#if 0 + +#if 0 if ((tmp.irq != bp->irq) || (tmp.port != bp->base) || (tmp.type != PORT_CIRRUS) || @@ -1331,16 +1315,16 @@ static inline int rc_set_serial_info(struct riscom_port * port, (tmp.xmit_fifo_size != CD180_NFIFO) || (tmp.flags & ~RISCOM_LEGAL_FLAGS)) return -EINVAL; -#endif - +#endif + change_speed = ((port->flags & ASYNC_SPD_MASK) != (tmp.flags & ASYNC_SPD_MASK)); - + if (!capable(CAP_SYS_ADMIN)) { if ((tmp.close_delay != port->close_delay) || (tmp.closing_wait != port->closing_wait) || ((tmp.flags & ~ASYNC_USR_MASK) != - (port->flags & ~ASYNC_USR_MASK))) + (port->flags & ~ASYNC_USR_MASK))) return -EPERM; port->flags = ((port->flags & ~ASYNC_USR_MASK) | (tmp.flags & ASYNC_USR_MASK)); @@ -1360,12 +1344,12 @@ static inline int rc_set_serial_info(struct riscom_port * port, return 0; } -static inline int rc_get_serial_info(struct riscom_port * port, +static int rc_get_serial_info(struct riscom_port *port, struct serial_struct __user *retinfo) { struct serial_struct tmp; struct riscom_board *bp = port_Board(port); - + memset(&tmp, 0, sizeof(tmp)); tmp.type = PORT_CIRRUS; tmp.line = port - rc_port; @@ -1379,19 +1363,18 @@ static inline int rc_get_serial_info(struct riscom_port * port, return copy_to_user(retinfo, &tmp, sizeof(tmp)) ? -EFAULT : 0; } -static int rc_ioctl(struct tty_struct * tty, struct file * filp, +static int rc_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, unsigned long arg) - { struct riscom_port *port = (struct riscom_port *)tty->driver_data; void __user *argp = (void __user *)arg; - int retval; - + int retval = 0; + if (rc_paranoia_check(port, tty->name, "rc_ioctl")) return -ENODEV; - + switch (cmd) { - case TCSBRK: /* SVID version: non-zero arg --> no break */ + case TCSBRK: /* SVID version: non-zero arg --> no break */ retval = tty_check_change(tty); if (retval) return retval; @@ -1399,45 +1382,40 @@ static int rc_ioctl(struct tty_struct * tty, struct file * filp, if (!arg) rc_send_break(port, HZ/4); /* 1/4 second */ break; - case TCSBRKP: /* support for POSIX tcsendbreak() */ + case TCSBRKP: /* support for POSIX tcsendbreak() */ retval = tty_check_change(tty); if (retval) return retval; tty_wait_until_sent(tty, 0); rc_send_break(port, arg ? arg*(HZ/10) : HZ/4); break; - case TIOCGSOFTCAR: - return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned __user *)argp); - case TIOCSSOFTCAR: - if (get_user(arg,(unsigned __user *) argp)) - return -EFAULT; - tty->termios->c_cflag = - ((tty->termios->c_cflag & ~CLOCAL) | - (arg ? CLOCAL : 0)); + case TIOCGSERIAL: + lock_kernel(); + retval = rc_get_serial_info(port, argp); + unlock_kernel(); break; - case TIOCGSERIAL: - return rc_get_serial_info(port, argp); - case TIOCSSERIAL: - return rc_set_serial_info(port, argp); - default: - return -ENOIOCTLCMD; + case TIOCSSERIAL: + lock_kernel(); + retval = rc_set_serial_info(port, argp); + unlock_kernel(); + break; + default: + retval = -ENOIOCTLCMD; } - return 0; + return retval; } -static void rc_throttle(struct tty_struct * tty) +static void rc_throttle(struct tty_struct *tty) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; struct riscom_board *bp; unsigned long flags; - + if (rc_paranoia_check(port, tty->name, "rc_throttle")) return; - bp = port_Board(port); spin_lock_irqsave(&riscom_lock, flags); - port->MSVR &= ~MSVR_RTS; rc_out(bp, CD180_CAR, port_No(port)); if (I_IXOFF(tty)) { @@ -1446,23 +1424,20 @@ static void rc_throttle(struct tty_struct * tty) rc_wait_CCR(bp); } rc_out(bp, CD180_MSVR, port->MSVR); - spin_unlock_irqrestore(&riscom_lock, flags); } -static void rc_unthrottle(struct tty_struct * tty) +static void rc_unthrottle(struct tty_struct *tty) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; struct riscom_board *bp; unsigned long flags; - + if (rc_paranoia_check(port, tty->name, "rc_unthrottle")) return; - bp = port_Board(port); - - spin_lock_irqsave(&riscom_lock, flags); + spin_lock_irqsave(&riscom_lock, flags); port->MSVR |= MSVR_RTS; rc_out(bp, CD180_CAR, port_No(port)); if (I_IXOFF(tty)) { @@ -1471,62 +1446,58 @@ static void rc_unthrottle(struct tty_struct * tty) rc_wait_CCR(bp); } rc_out(bp, CD180_MSVR, port->MSVR); - spin_unlock_irqrestore(&riscom_lock, flags); } -static void rc_stop(struct tty_struct * tty) +static void rc_stop(struct tty_struct *tty) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; struct riscom_board *bp; unsigned long flags; - + if (rc_paranoia_check(port, tty->name, "rc_stop")) return; - + bp = port_Board(port); - - spin_lock_irqsave(&riscom_lock, flags); + spin_lock_irqsave(&riscom_lock, flags); port->IER &= ~IER_TXRDY; rc_out(bp, CD180_CAR, port_No(port)); rc_out(bp, CD180_IER, port->IER); - spin_unlock_irqrestore(&riscom_lock, flags); } -static void rc_start(struct tty_struct * tty) +static void rc_start(struct tty_struct *tty) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; struct riscom_board *bp; unsigned long flags; - + if (rc_paranoia_check(port, tty->name, "rc_start")) return; - + bp = port_Board(port); - + spin_lock_irqsave(&riscom_lock, flags); - if (port->xmit_cnt && port->xmit_buf && !(port->IER & IER_TXRDY)) { + if (port->xmit_cnt && port->xmit_buf && !(port->IER & IER_TXRDY)) { port->IER |= IER_TXRDY; rc_out(bp, CD180_CAR, port_No(port)); rc_out(bp, CD180_IER, port->IER); } - spin_unlock_irqrestore(&riscom_lock, flags); } -static void rc_hangup(struct tty_struct * tty) +static void rc_hangup(struct tty_struct *tty) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; struct riscom_board *bp; - + if (rc_paranoia_check(port, tty->name, "rc_hangup")) return; - + bp = port_Board(port); - + rc_shutdown_port(bp, port); port->count = 0; port->flags &= ~ASYNC_NORMAL_ACTIVE; @@ -1534,17 +1505,14 @@ static void rc_hangup(struct tty_struct * tty) wake_up_interruptible(&port->open_wait); } -static void rc_set_termios(struct tty_struct * tty, struct ktermios * old_termios) +static void rc_set_termios(struct tty_struct *tty, + struct ktermios *old_termios) { struct riscom_port *port = (struct riscom_port *)tty->driver_data; unsigned long flags; - + if (rc_paranoia_check(port, tty->name, "rc_set_termios")) return; - - if (tty->termios->c_cflag == old_termios->c_cflag && - tty->termios->c_iflag == old_termios->c_iflag) - return; spin_lock_irqsave(&riscom_lock, flags); rc_change_speed(port_Board(port), port); @@ -1583,9 +1551,9 @@ static int __init rc_init_drivers(void) int i; riscom_driver = alloc_tty_driver(RC_NBOARD * RC_NPORT); - if (!riscom_driver) + if (!riscom_driver) return -ENOMEM; - + riscom_driver->owner = THIS_MODULE; riscom_driver->name = "ttyL"; riscom_driver->major = RISCOM8_NORMAL_MAJOR; @@ -1598,23 +1566,21 @@ static int __init rc_init_drivers(void) riscom_driver->init_termios.c_ospeed = 9600; riscom_driver->flags = TTY_DRIVER_REAL_RAW; tty_set_operations(riscom_driver, &riscom_ops); - if ((error = tty_register_driver(riscom_driver))) { + error = tty_register_driver(riscom_driver); + if (error != 0) { put_tty_driver(riscom_driver); printk(KERN_ERR "rc: Couldn't register RISCom/8 driver, " - "error = %d\n", - error); + "error = %d\n", error); return 1; } - memset(rc_port, 0, sizeof(rc_port)); for (i = 0; i < RC_NPORT * RC_NBOARD; i++) { rc_port[i].magic = RISCOM8_MAGIC; - rc_port[i].close_delay = 50 * HZ/100; - rc_port[i].closing_wait = 3000 * HZ/100; + rc_port[i].close_delay = 50 * HZ / 100; + rc_port[i].closing_wait = 3000 * HZ / 100; init_waitqueue_head(&rc_port[i].open_wait); init_waitqueue_head(&rc_port[i].close_wait); } - return 0; } @@ -1627,13 +1593,13 @@ static void rc_release_drivers(void) #ifndef MODULE /* * Called at boot time. - * + * * You can specify IO base for up to RC_NBOARD cards, * using line "riscom8=0xiobase1,0xiobase2,.." at LILO prompt. * Note that there will be no probing at default * addresses in this case. * - */ + */ static int __init riscom8_setup(char *str) { int ints[RC_NBOARD]; @@ -1644,7 +1610,7 @@ static int __init riscom8_setup(char *str) for (i = 0; i < RC_NBOARD; i++) { if (i < ints[0]) rc_board[i].base = ints[i+1]; - else + else rc_board[i].base = 0; } return 1; @@ -1659,8 +1625,8 @@ static char banner[] __initdata = static char no_boards_msg[] __initdata = KERN_INFO "rc: No RISCom/8 boards detected.\n"; -/* - * This routine must be called by kernel at boot time +/* + * This routine must be called by kernel at boot time */ static int __init riscom8_init(void) { @@ -1669,13 +1635,12 @@ static int __init riscom8_init(void) printk(banner); - if (rc_init_drivers()) + if (rc_init_drivers()) return -EIO; - for (i = 0; i < RC_NBOARD; i++) - if (rc_board[i].base && !rc_probe(&rc_board[i])) + for (i = 0; i < RC_NBOARD; i++) + if (rc_board[i].base && !rc_probe(&rc_board[i])) found++; - if (!found) { rc_release_drivers(); printk(no_boards_msg); @@ -1702,13 +1667,13 @@ MODULE_LICENSE("GPL"); * by specifying "iobase=0xXXX iobase1=0xXXX ..." as insmod parameter. * */ -static int __init riscom8_init_module (void) +static int __init riscom8_init_module(void) { #ifdef MODULE int i; if (iobase || iobase1 || iobase2 || iobase3) { - for(i = 0; i < RC_NBOARD; i++) + for (i = 0; i < RC_NBOARD; i++) rc_board[i].base = 0; } @@ -1724,18 +1689,17 @@ static int __init riscom8_init_module (void) return riscom8_init(); } - -static void __exit riscom8_exit_module (void) + +static void __exit riscom8_exit_module(void) { int i; - + rc_release_drivers(); - for (i = 0; i < RC_NBOARD; i++) - if (rc_board[i].flags & RC_BOARD_PRESENT) + for (i = 0; i < RC_NBOARD; i++) + if (rc_board[i].flags & RC_BOARD_PRESENT) rc_release_io_range(&rc_board[i]); - + } module_init(riscom8_init_module); module_exit(riscom8_exit_module); - diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c index f585bc8579e..743dc80a932 100644 --- a/drivers/char/rocket.c +++ b/drivers/char/rocket.c @@ -449,7 +449,8 @@ static void rp_do_transmit(struct r_port *info) while (1) { if (tty->stopped || tty->hw_stopped) break; - c = min(info->xmit_fifo_room, min(info->xmit_cnt, XMIT_BUF_SIZE - info->xmit_tail)); + c = min(info->xmit_fifo_room, info->xmit_cnt); + c = min(c, XMIT_BUF_SIZE - info->xmit_tail); if (c <= 0 || info->xmit_fifo_room <= 0) break; sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2); @@ -1433,29 +1434,38 @@ static int rp_ioctl(struct tty_struct *tty, struct file *file, { struct r_port *info = (struct r_port *) tty->driver_data; void __user *argp = (void __user *)arg; + int ret = 0; if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl")) return -ENXIO; + lock_kernel(); + switch (cmd) { case RCKP_GET_STRUCT: if (copy_to_user(argp, info, sizeof (struct r_port))) - return -EFAULT; - return 0; + ret = -EFAULT; + break; case RCKP_GET_CONFIG: - return get_config(info, argp); + ret = get_config(info, argp); + break; case RCKP_SET_CONFIG: - return set_config(info, argp); + ret = set_config(info, argp); + break; case RCKP_GET_PORTS: - return get_ports(info, argp); + ret = get_ports(info, argp); + break; case RCKP_RESET_RM2: - return reset_rm2(info, argp); + ret = reset_rm2(info, argp); + break; case RCKP_GET_VERSION: - return get_version(info, argp); + ret = get_version(info, argp); + break; default: - return -ENOIOCTLCMD; + ret = -ENOIOCTLCMD; } - return 0; + unlock_kernel(); + return ret; } static void rp_send_xchar(struct tty_struct *tty, char ch) @@ -1575,6 +1585,7 @@ static void rp_wait_until_sent(struct tty_struct *tty, int timeout) jiffies); printk(KERN_INFO "cps=%d...\n", info->cps); #endif + lock_kernel(); while (1) { txcnt = sGetTxCnt(cp); if (!txcnt) { @@ -1602,6 +1613,7 @@ static void rp_wait_until_sent(struct tty_struct *tty, int timeout) break; } __set_current_state(TASK_RUNNING); + unlock_kernel(); #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies); #endif @@ -1651,14 +1663,14 @@ static void rp_hangup(struct tty_struct *tty) * writing routines will write directly to transmit FIFO. * Write buffer and counters protected by spinlocks */ -static void rp_put_char(struct tty_struct *tty, unsigned char ch) +static int rp_put_char(struct tty_struct *tty, unsigned char ch) { struct r_port *info = (struct r_port *) tty->driver_data; CHANNEL_t *cp; unsigned long flags; if (rocket_paranoia_check(info, "rp_put_char")) - return; + return 0; /* * Grab the port write mutex, locking out other processes that try to @@ -1687,6 +1699,7 @@ static void rp_put_char(struct tty_struct *tty, unsigned char ch) } spin_unlock_irqrestore(&info->slock, flags); mutex_unlock(&info->write_mtx); + return 1; } /* @@ -1749,10 +1762,10 @@ static int rp_write(struct tty_struct *tty, /* Write remaining data into the port's xmit_buf */ while (1) { - if (!info->tty) /* Seemingly obligatory check... */ + if (!info->tty) /* Seemingly obligatory check... */ goto end; - - c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head)); + c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1); + c = min(c, XMIT_BUF_SIZE - info->xmit_head); if (c <= 0) break; diff --git a/drivers/char/rocket_int.h b/drivers/char/rocket_int.h index b01d38125a8..143cc432fdb 100644 --- a/drivers/char/rocket_int.h +++ b/drivers/char/rocket_int.h @@ -55,7 +55,7 @@ static inline void sOutW(unsigned short port, unsigned short value) static inline void out32(unsigned short port, Byte_t *p) { - u32 value = le32_to_cpu(get_unaligned((__le32 *)p)); + u32 value = get_unaligned_le32(p); #ifdef ROCKET_DEBUG_IO printk(KERN_DEBUG "out32(%x, %lx)...\n", port, value); #endif diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c index e2ec2ee4cf7..5f80a9dff57 100644 --- a/drivers/char/rtc.c +++ b/drivers/char/rtc.c @@ -1069,10 +1069,8 @@ no_irq: } #ifdef CONFIG_PROC_FS - ent = create_proc_entry("driver/rtc", 0, NULL); - if (ent) - ent->proc_fops = &rtc_proc_fops; - else + ent = proc_create("driver/rtc", 0, NULL, &rtc_proc_fops); + if (!ent) printk(KERN_WARNING "rtc: Failed to register with procfs.\n"); #endif diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c index df8cd0ca97e..fd2db07a50f 100644 --- a/drivers/char/serial167.c +++ b/drivers/char/serial167.c @@ -1060,7 +1060,7 @@ static void config_setup(struct cyclades_port *info) } /* config_setup */ -static void cy_put_char(struct tty_struct *tty, unsigned char ch) +static int cy_put_char(struct tty_struct *tty, unsigned char ch) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; unsigned long flags; @@ -1070,7 +1070,7 @@ static void cy_put_char(struct tty_struct *tty, unsigned char ch) #endif if (serial_paranoia_check(info, tty->name, "cy_put_char")) - return; + return 0; if (!info->xmit_buf) return; @@ -1078,13 +1078,14 @@ static void cy_put_char(struct tty_struct *tty, unsigned char ch) local_irq_save(flags); if (info->xmit_cnt >= PAGE_SIZE - 1) { local_irq_restore(flags); - return; + return 0; } info->xmit_buf[info->xmit_head++] = ch; info->xmit_head &= PAGE_SIZE - 1; info->xmit_cnt++; local_irq_restore(flags); + return 1; } /* cy_put_char */ static void cy_flush_chars(struct tty_struct *tty) @@ -1539,6 +1540,8 @@ cy_ioctl(struct tty_struct *tty, struct file *file, printk("cy_ioctl %s, cmd = %x arg = %lx\n", tty->name, cmd, arg); /* */ #endif + lock_kernel(); + switch (cmd) { case CYGETMON: ret_val = get_mon_info(info, argp); @@ -1584,18 +1587,6 @@ cy_ioctl(struct tty_struct *tty, struct file *file, break; /* The following commands are incompletely implemented!!! */ - case TIOCGSOFTCAR: - ret_val = - put_user(C_CLOCAL(tty) ? 1 : 0, - (unsigned long __user *)argp); - break; - case TIOCSSOFTCAR: - ret_val = get_user(val, (unsigned long __user *)argp); - if (ret_val) - break; - tty->termios->c_cflag = - ((tty->termios->c_cflag & ~CLOCAL) | (val ? CLOCAL : 0)); - break; case TIOCGSERIAL: ret_val = get_serial_info(info, argp); break; @@ -1605,6 +1596,7 @@ cy_ioctl(struct tty_struct *tty, struct file *file, default: ret_val = -ENOIOCTLCMD; } + unlock_kernel(); #ifdef SERIAL_DEBUG_OTHER printk("cy_ioctl done\n"); @@ -1683,8 +1675,7 @@ static void cy_close(struct tty_struct *tty, struct file *filp) if (info->flags & ASYNC_INITIALIZED) tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */ shutdown(info); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + cy_flush_buffer(tty); tty_ldisc_flush(tty); info->tty = NULL; if (info->blocked_open) { diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c index b9c1dba6bd0..8fe099a4106 100644 --- a/drivers/char/snsc.c +++ b/drivers/char/snsc.c @@ -80,7 +80,7 @@ scdrv_open(struct inode *inode, struct file *file) sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL); if (sd == NULL) { printk("%s: couldn't allocate subchannel data\n", - __FUNCTION__); + __func__); return -ENOMEM; } @@ -90,7 +90,7 @@ scdrv_open(struct inode *inode, struct file *file) if (sd->sd_subch < 0) { kfree(sd); - printk("%s: couldn't allocate subchannel\n", __FUNCTION__); + printk("%s: couldn't allocate subchannel\n", __func__); return -EBUSY; } @@ -110,7 +110,7 @@ scdrv_open(struct inode *inode, struct file *file) if (rv) { ia64_sn_irtr_close(sd->sd_nasid, sd->sd_subch); kfree(sd); - printk("%s: irq request failed (%d)\n", __FUNCTION__, rv); + printk("%s: irq request failed (%d)\n", __func__, rv); return -EBUSY; } @@ -215,7 +215,7 @@ scdrv_read(struct file *file, char __user *buf, size_t count, loff_t *f_pos) */ if (count < len) { pr_debug("%s: only accepting %d of %d bytes\n", - __FUNCTION__, (int) count, len); + __func__, (int) count, len); } len = min((int) count, len); if (copy_to_user(buf, sd->sd_rb, len)) @@ -384,7 +384,7 @@ scdrv_init(void) if (alloc_chrdev_region(&first_dev, 0, num_cnodes, SYSCTL_BASENAME) < 0) { printk("%s: failed to register SN system controller device\n", - __FUNCTION__); + __func__); return -ENODEV; } snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME); @@ -403,7 +403,7 @@ scdrv_init(void) GFP_KERNEL); if (!scd) { printk("%s: failed to allocate device info" - "for %s/%s\n", __FUNCTION__, + "for %s/%s\n", __func__, SYSCTL_BASENAME, devname); continue; } @@ -412,7 +412,7 @@ scdrv_init(void) scd->scd_nasid = cnodeid_to_nasid(cnode); if (!(salbuf = kmalloc(SCDRV_BUFSZ, GFP_KERNEL))) { printk("%s: failed to allocate driver buffer" - "(%s%s)\n", __FUNCTION__, + "(%s%s)\n", __func__, SYSCTL_BASENAME, devname); kfree(scd); continue; @@ -424,7 +424,7 @@ scdrv_init(void) ("%s: failed to initialize SAL for" " system controller communication" " (%s/%s): outdated PROM?\n", - __FUNCTION__, SYSCTL_BASENAME, devname); + __func__, SYSCTL_BASENAME, devname); kfree(scd); kfree(salbuf); continue; @@ -435,7 +435,7 @@ scdrv_init(void) if (cdev_add(&scd->scd_cdev, dev, 1)) { printk("%s: failed to register system" " controller device (%s%s)\n", - __FUNCTION__, SYSCTL_BASENAME, devname); + __func__, SYSCTL_BASENAME, devname); kfree(scd); kfree(salbuf); continue; diff --git a/drivers/char/snsc_event.c b/drivers/char/snsc_event.c index 1b75b0b7d54..53b3d44f8c0 100644 --- a/drivers/char/snsc_event.c +++ b/drivers/char/snsc_event.c @@ -63,16 +63,13 @@ static int scdrv_parse_event(char *event, int *src, int *code, int *esp_code, char *desc) { char *desc_end; - __be32 from_buf; /* record event source address */ - from_buf = get_unaligned((__be32 *)event); - *src = be32_to_cpup(&from_buf); + *src = get_unaligned_be32(event); event += 4; /* move on to event code */ /* record the system controller's event code */ - from_buf = get_unaligned((__be32 *)event); - *code = be32_to_cpup(&from_buf); + *code = get_unaligned_be32(event); event += 4; /* move on to event arguments */ /* how many arguments are in the packet? */ @@ -86,8 +83,7 @@ scdrv_parse_event(char *event, int *src, int *code, int *esp_code, char *desc) /* not an integer argument, so give up */ return -1; } - from_buf = get_unaligned((__be32 *)event); - *esp_code = be32_to_cpup(&from_buf); + *esp_code = get_unaligned_be32(event); event += 4; /* parse out the event description */ @@ -275,7 +271,7 @@ scdrv_event_init(struct sysctl_data_s *scd) event_sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL); if (event_sd == NULL) { printk(KERN_WARNING "%s: couldn't allocate subchannel info" - " for event monitoring\n", __FUNCTION__); + " for event monitoring\n", __func__); return; } @@ -289,7 +285,7 @@ scdrv_event_init(struct sysctl_data_s *scd) if (event_sd->sd_subch < 0) { kfree(event_sd); printk(KERN_WARNING "%s: couldn't open event subchannel\n", - __FUNCTION__); + __func__); return; } @@ -299,7 +295,7 @@ scdrv_event_init(struct sysctl_data_s *scd) "system controller events", event_sd); if (rv) { printk(KERN_WARNING "%s: irq request failed (%d)\n", - __FUNCTION__, rv); + __func__, rv); ia64_sn_irtr_close(event_sd->sd_nasid, event_sd->sd_subch); kfree(event_sd); return; diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c index c03ad164c39..58533de5902 100644 --- a/drivers/char/sonypi.c +++ b/drivers/char/sonypi.c @@ -506,7 +506,7 @@ static struct sonypi_device { while (--n && (command)) \ udelay(1); \ if (!n && (verbose || !quiet)) \ - printk(KERN_WARNING "sonypi command failed at %s : %s (line %d)\n", __FILE__, __FUNCTION__, __LINE__); \ + printk(KERN_WARNING "sonypi command failed at %s : %s (line %d)\n", __FILE__, __func__, __LINE__); \ } #ifdef CONFIG_ACPI diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c index 4b5b5b78acb..2ee4d989375 100644 --- a/drivers/char/specialix.c +++ b/drivers/char/specialix.c @@ -131,8 +131,8 @@ static int sx_rxfifo = SPECIALIX_RXFIFO; #define SX_DEBUG_FIFO 0x0800 -#define func_enter() dprintk (SX_DEBUG_FLOW, "io8: enter %s\n",__FUNCTION__) -#define func_exit() dprintk (SX_DEBUG_FLOW, "io8: exit %s\n", __FUNCTION__) +#define func_enter() dprintk (SX_DEBUG_FLOW, "io8: enter %s\n",__func__) +#define func_exit() dprintk (SX_DEBUG_FLOW, "io8: exit %s\n", __func__) #define jiffies_from_ms(a) ((((a) * HZ)/1000)+1) @@ -874,7 +874,7 @@ static irqreturn_t sx_interrupt(int dummy, void *dev_id) spin_lock_irqsave(&bp->lock, flags); - dprintk (SX_DEBUG_FLOW, "enter %s port %d room: %ld\n", __FUNCTION__, port_No(sx_get_port(bp, "INT")), SERIAL_XMIT_SIZE - sx_get_port(bp, "ITN")->xmit_cnt - 1); + dprintk (SX_DEBUG_FLOW, "enter %s port %d room: %ld\n", __func__, port_No(sx_get_port(bp, "INT")), SERIAL_XMIT_SIZE - sx_get_port(bp, "ITN")->xmit_cnt - 1); if (!(bp->flags & SX_BOARD_ACTIVE)) { dprintk (SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n", bp->irq); spin_unlock_irqrestore(&bp->lock, flags); @@ -1504,6 +1504,27 @@ static int sx_open(struct tty_struct * tty, struct file * filp) return 0; } +static void sx_flush_buffer(struct tty_struct *tty) +{ + struct specialix_port *port = (struct specialix_port *)tty->driver_data; + unsigned long flags; + struct specialix_board * bp; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_flush_buffer")) { + func_exit(); + return; + } + + bp = port_Board(port); + spin_lock_irqsave(&port->lock, flags); + port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; + spin_unlock_irqrestore(&port->lock, flags); + tty_wakeup(tty); + + func_exit(); +} static void sx_close(struct tty_struct * tty, struct file * filp) { @@ -1597,8 +1618,7 @@ static void sx_close(struct tty_struct * tty, struct file * filp) } sx_shutdown_port(bp, port); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + sx_flush_buffer(tty); tty_ldisc_flush(tty); spin_lock_irqsave(&port->lock, flags); tty->closing = 0; @@ -1670,7 +1690,7 @@ static int sx_write(struct tty_struct * tty, } -static void sx_put_char(struct tty_struct * tty, unsigned char ch) +static int sx_put_char(struct tty_struct * tty, unsigned char ch) { struct specialix_port *port = (struct specialix_port *)tty->driver_data; unsigned long flags; @@ -1680,12 +1700,12 @@ static void sx_put_char(struct tty_struct * tty, unsigned char ch) if (sx_paranoia_check(port, tty->name, "sx_put_char")) { func_exit(); - return; + return 0; } dprintk (SX_DEBUG_TX, "check tty: %p %p\n", tty, port->xmit_buf); if (!port->xmit_buf) { func_exit(); - return; + return 0; } bp = port_Board(port); spin_lock_irqsave(&port->lock, flags); @@ -1695,7 +1715,7 @@ static void sx_put_char(struct tty_struct * tty, unsigned char ch) spin_unlock_irqrestore(&port->lock, flags); dprintk (SX_DEBUG_TX, "Exit size\n"); func_exit(); - return; + return 0; } dprintk (SX_DEBUG_TX, "Handle xmit: %p %p\n", port, port->xmit_buf); port->xmit_buf[port->xmit_head++] = ch; @@ -1704,6 +1724,7 @@ static void sx_put_char(struct tty_struct * tty, unsigned char ch) spin_unlock_irqrestore(&port->lock, flags); func_exit(); + return 1; } @@ -1770,28 +1791,6 @@ static int sx_chars_in_buffer(struct tty_struct *tty) } -static void sx_flush_buffer(struct tty_struct *tty) -{ - struct specialix_port *port = (struct specialix_port *)tty->driver_data; - unsigned long flags; - struct specialix_board * bp; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_flush_buffer")) { - func_exit(); - return; - } - - bp = port_Board(port); - spin_lock_irqsave(&port->lock, flags); - port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; - spin_unlock_irqrestore(&port->lock, flags); - tty_wakeup(tty); - - func_exit(); -} - static int sx_tiocmget(struct tty_struct *tty, struct file *file) { @@ -1803,7 +1802,7 @@ static int sx_tiocmget(struct tty_struct *tty, struct file *file) func_enter(); - if (sx_paranoia_check(port, tty->name, __FUNCTION__)) { + if (sx_paranoia_check(port, tty->name, __func__)) { func_exit(); return -ENODEV; } @@ -1845,7 +1844,7 @@ static int sx_tiocmset(struct tty_struct *tty, struct file *file, func_enter(); - if (sx_paranoia_check(port, tty->name, __FUNCTION__)) { + if (sx_paranoia_check(port, tty->name, __func__)) { func_exit(); return -ENODEV; } @@ -1922,29 +1921,13 @@ static inline int sx_set_serial_info(struct specialix_port * port, int change_speed; func_enter(); - /* - if (!access_ok(VERIFY_READ, (void *) newinfo, sizeof(tmp))) { - func_exit(); - return -EFAULT; - } - */ + if (copy_from_user(&tmp, newinfo, sizeof(tmp))) { func_enter(); return -EFAULT; } -#if 0 - if ((tmp.irq != bp->irq) || - (tmp.port != bp->base) || - (tmp.type != PORT_CIRRUS) || - (tmp.baud_base != (SX_OSCFREQ + CD186x_TPC/2) / CD186x_TPC) || - (tmp.custom_divisor != 0) || - (tmp.xmit_fifo_size != CD186x_NFIFO) || - (tmp.flags & ~SPECIALIX_LEGAL_FLAGS)) { - func_exit(); - return -EINVAL; - } -#endif + lock_kernel(); change_speed = ((port->flags & ASYNC_SPD_MASK) != (tmp.flags & ASYNC_SPD_MASK)); @@ -1956,6 +1939,7 @@ static inline int sx_set_serial_info(struct specialix_port * port, ((tmp.flags & ~ASYNC_USR_MASK) != (port->flags & ~ASYNC_USR_MASK))) { func_exit(); + unlock_kernel(); return -EPERM; } port->flags = ((port->flags & ~ASYNC_USR_MASK) | @@ -1972,6 +1956,7 @@ static inline int sx_set_serial_info(struct specialix_port * port, sx_change_speed(bp, port); } func_exit(); + unlock_kernel(); return 0; } @@ -1984,12 +1969,8 @@ static inline int sx_get_serial_info(struct specialix_port * port, func_enter(); - /* - if (!access_ok(VERIFY_WRITE, (void *) retinfo, sizeof(tmp))) - return -EFAULT; - */ - memset(&tmp, 0, sizeof(tmp)); + lock_kernel(); tmp.type = PORT_CIRRUS; tmp.line = port - sx_port; tmp.port = bp->base; @@ -2000,6 +1981,7 @@ static inline int sx_get_serial_info(struct specialix_port * port, tmp.closing_wait = port->closing_wait * HZ/100; tmp.custom_divisor = port->custom_divisor; tmp.xmit_fifo_size = CD186x_NFIFO; + unlock_kernel(); if (copy_to_user(retinfo, &tmp, sizeof(tmp))) { func_exit(); return -EFAULT; @@ -2045,23 +2027,6 @@ static int sx_ioctl(struct tty_struct * tty, struct file * filp, sx_send_break(port, arg ? arg*(HZ/10) : HZ/4); func_exit(); return 0; - case TIOCGSOFTCAR: - if (put_user(C_CLOCAL(tty)?1:0, (unsigned long __user *)argp)) { - func_exit(); - return -EFAULT; - } - func_exit(); - return 0; - case TIOCSSOFTCAR: - if (get_user(arg, (unsigned long __user *) argp)) { - func_exit(); - return -EFAULT; - } - tty->termios->c_cflag = - ((tty->termios->c_cflag & ~CLOCAL) | - (arg ? CLOCAL : 0)); - func_exit(); - return 0; case TIOCGSERIAL: func_exit(); return sx_get_serial_info(port, argp); diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c index 874aaa08e95..d17be10c5d2 100644 --- a/drivers/char/stallion.c +++ b/drivers/char/stallion.c @@ -875,6 +875,7 @@ static void stl_waituntilsent(struct tty_struct *tty, int timeout) timeout = HZ; tend = jiffies + timeout; + lock_kernel(); while (stl_datastate(portp)) { if (signal_pending(current)) break; @@ -882,6 +883,7 @@ static void stl_waituntilsent(struct tty_struct *tty, int timeout) if (time_after_eq(jiffies, tend)) break; } + unlock_kernel(); } /*****************************************************************************/ @@ -1273,18 +1275,9 @@ static int stl_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd rc = 0; + lock_kernel(); + switch (cmd) { - case TIOCGSOFTCAR: - rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), - (unsigned __user *) argp); - break; - case TIOCSSOFTCAR: - if (get_user(ival, (unsigned int __user *) arg)) - return -EFAULT; - tty->termios->c_cflag = - (tty->termios->c_cflag & ~CLOCAL) | - (ival ? CLOCAL : 0); - break; case TIOCGSERIAL: rc = stl_getserial(portp, argp); break; @@ -1308,7 +1301,7 @@ static int stl_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd rc = -ENOIOCTLCMD; break; } - + unlock_kernel(); return rc; } diff --git a/drivers/char/sx.c b/drivers/char/sx.c index a6e1c9ba121..f39f6fd8935 100644 --- a/drivers/char/sx.c +++ b/drivers/char/sx.c @@ -384,11 +384,11 @@ static struct real_driver sx_real_driver = { #define sx_dprintk(f, str...) /* nothing */ #endif -#define func_enter() sx_dprintk(SX_DEBUG_FLOW, "sx: enter %s\n",__FUNCTION__) -#define func_exit() sx_dprintk(SX_DEBUG_FLOW, "sx: exit %s\n",__FUNCTION__) +#define func_enter() sx_dprintk(SX_DEBUG_FLOW, "sx: enter %s\n",__func__) +#define func_exit() sx_dprintk(SX_DEBUG_FLOW, "sx: exit %s\n",__func__) #define func_enter2() sx_dprintk(SX_DEBUG_FLOW, "sx: enter %s (port %d)\n", \ - __FUNCTION__, port->line) + __func__, port->line) /* * Firmware loader driver specific routines @@ -1574,7 +1574,7 @@ static void sx_close(void *ptr) sx_dprintk(SX_DEBUG_CLOSE, "WARNING port count:%d\n", port->gs.count); /*printk("%s SETTING port count to zero: %p count: %d\n", - __FUNCTION__, port, port->gs.count); + __func__, port, port->gs.count); port->gs.count = 0;*/ } @@ -1844,6 +1844,7 @@ static void sx_break(struct tty_struct *tty, int flag) int rv; func_enter(); + lock_kernel(); if (flag) rv = sx_send_command(port, HS_START, -1, HS_IDLE_BREAK); @@ -1852,7 +1853,7 @@ static void sx_break(struct tty_struct *tty, int flag) if (rv != 1) printk(KERN_ERR "sx: couldn't send break (%x).\n", read_sx_byte(port->board, CHAN_OFFSET(port, hi_hstat))); - + unlock_kernel(); func_exit(); } @@ -1888,23 +1889,12 @@ static int sx_ioctl(struct tty_struct *tty, struct file *filp, int rc; struct sx_port *port = tty->driver_data; void __user *argp = (void __user *)arg; - int ival; /* func_enter2(); */ rc = 0; + lock_kernel(); switch (cmd) { - case TIOCGSOFTCAR: - rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), - (unsigned __user *)argp); - break; - case TIOCSSOFTCAR: - if ((rc = get_user(ival, (unsigned __user *)argp)) == 0) { - tty->termios->c_cflag = - (tty->termios->c_cflag & ~CLOCAL) | - (ival ? CLOCAL : 0); - } - break; case TIOCGSERIAL: rc = gs_getserial(&port->gs, argp); break; @@ -1915,6 +1905,7 @@ static int sx_ioctl(struct tty_struct *tty, struct file *filp, rc = -ENOIOCTLCMD; break; } + unlock_kernel(); /* func_exit(); */ return rc; @@ -2549,7 +2540,7 @@ static int __devinit sx_eisa_probe(struct device *dev) goto err_flag; } board->base2 = - board->base = ioremap(board->hw_base, SI2_EISA_WINDOW_LEN); + board->base = ioremap_nocache(board->hw_base, SI2_EISA_WINDOW_LEN); if (!board->base) { dev_err(dev, "can't remap memory\n"); goto err_reg; @@ -2626,7 +2617,7 @@ static void __devinit fix_sx_pci(struct pci_dev *pdev, struct sx_board *board) pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &hwbase); hwbase &= PCI_BASE_ADDRESS_MEM_MASK; - rebase = ioremap(hwbase, 0x80); + rebase = ioremap_nocache(hwbase, 0x80); t = readl(rebase + CNTRL_REG_OFFSET); if (t != CNTRL_REG_GOODVALUE) { printk(KERN_DEBUG "sx: performing cntrl reg fix: %08x -> " @@ -2770,7 +2761,7 @@ static int __init sx_init(void) if (!request_region(board->hw_base, board->hw_len, "sx")) continue; board->base2 = - board->base = ioremap(board->hw_base, board->hw_len); + board->base = ioremap_nocache(board->hw_base, board->hw_len); if (!board->base) goto err_sx_reg; board->flags &= ~SX_BOARD_TYPE; @@ -2794,7 +2785,7 @@ err_sx_reg: if (!request_region(board->hw_base, board->hw_len, "sx")) continue; board->base2 = - board->base = ioremap(board->hw_base, board->hw_len); + board->base = ioremap_nocache(board->hw_base, board->hw_len); if (!board->base) goto err_si_reg; board->flags &= ~SX_BOARD_TYPE; @@ -2817,7 +2808,7 @@ err_si_reg: if (!request_region(board->hw_base, board->hw_len, "sx")) continue; board->base2 = - board->base = ioremap(board->hw_base, board->hw_len); + board->base = ioremap_nocache(board->hw_base, board->hw_len); if (!board->base) goto err_si1_reg; board->flags &= ~SX_BOARD_TYPE; diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c index fadab1d9510..ac5080df256 100644 --- a/drivers/char/synclink.c +++ b/drivers/char/synclink.c @@ -2026,34 +2026,35 @@ static void mgsl_change_params(struct mgsl_struct *info) * * Return Value: None */ -static void mgsl_put_char(struct tty_struct *tty, unsigned char ch) +static int mgsl_put_char(struct tty_struct *tty, unsigned char ch) { - struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data; + struct mgsl_struct *info = tty->driver_data; unsigned long flags; + int ret = 0; - if ( debug_level >= DEBUG_LEVEL_INFO ) { - printk( "%s(%d):mgsl_put_char(%d) on %s\n", - __FILE__,__LINE__,ch,info->device_name); + if (debug_level >= DEBUG_LEVEL_INFO) { + printk(KERN_DEBUG "%s(%d):mgsl_put_char(%d) on %s\n", + __FILE__, __LINE__, ch, info->device_name); } if (mgsl_paranoia_check(info, tty->name, "mgsl_put_char")) - return; + return 0; if (!tty || !info->xmit_buf) - return; + return 0; - spin_lock_irqsave(&info->irq_spinlock,flags); - - if ( (info->params.mode == MGSL_MODE_ASYNC ) || !info->tx_active ) { + spin_lock_irqsave(&info->irq_spinlock, flags); + if ((info->params.mode == MGSL_MODE_ASYNC ) || !info->tx_active) { if (info->xmit_cnt < SERIAL_XMIT_SIZE - 1) { info->xmit_buf[info->xmit_head++] = ch; info->xmit_head &= SERIAL_XMIT_SIZE-1; info->xmit_cnt++; + ret = 1; } } - - spin_unlock_irqrestore(&info->irq_spinlock,flags); + spin_unlock_irqrestore(&info->irq_spinlock, flags); + return ret; } /* end of mgsl_put_char() */ @@ -2942,6 +2943,7 @@ static int mgsl_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg) { struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data; + int ret; if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgsl_ioctl %s cmd=%08X\n", __FILE__,__LINE__, @@ -2956,7 +2958,10 @@ static int mgsl_ioctl(struct tty_struct *tty, struct file * file, return -EIO; } - return mgsl_ioctl_common(info, cmd, arg); + lock_kernel(); + ret = mgsl_ioctl_common(info, cmd, arg); + unlock_kernel(); + return ret; } static int mgsl_ioctl_common(struct mgsl_struct *info, unsigned int cmd, unsigned long arg) @@ -3153,8 +3158,7 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp) if (info->flags & ASYNC_INITIALIZED) mgsl_wait_until_sent(tty, info->timeout); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + mgsl_flush_buffer(tty); tty_ldisc_flush(tty); @@ -3217,7 +3221,8 @@ static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout) * interval should also be less than the timeout. * Note: use tight timings here to satisfy the NIST-PCTS. */ - + + lock_kernel(); if ( info->params.data_rate ) { char_time = info->timeout/(32 * 5); if (!char_time) @@ -3247,6 +3252,7 @@ static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout) break; } } + unlock_kernel(); exit: if (debug_level >= DEBUG_LEVEL_INFO) @@ -4144,7 +4150,8 @@ static int mgsl_claim_resources(struct mgsl_struct *info) } info->lcr_mem_requested = true; - info->memory_base = ioremap(info->phys_memory_base,0x40000); + info->memory_base = ioremap_nocache(info->phys_memory_base, + 0x40000); if (!info->memory_base) { printk( "%s(%d):Cant map shared memory on device %s MemAddr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_memory_base ); @@ -4157,12 +4164,14 @@ static int mgsl_claim_resources(struct mgsl_struct *info) goto errout; } - info->lcr_base = ioremap(info->phys_lcr_base,PAGE_SIZE) + info->lcr_offset; + info->lcr_base = ioremap_nocache(info->phys_lcr_base, + PAGE_SIZE); if (!info->lcr_base) { printk( "%s(%d):Cant map LCR memory on device %s MemAddr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_lcr_base ); goto errout; } + info->lcr_base += info->lcr_offset; } else { /* claim DMA channel */ diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c index f3d8d72e5ea..2001b0e52dc 100644 --- a/drivers/char/synclink_gt.c +++ b/drivers/char/synclink_gt.c @@ -151,7 +151,7 @@ static void hangup(struct tty_struct *tty); static void set_termios(struct tty_struct *tty, struct ktermios *old_termios); static int write(struct tty_struct *tty, const unsigned char *buf, int count); -static void put_char(struct tty_struct *tty, unsigned char ch); +static int put_char(struct tty_struct *tty, unsigned char ch); static void send_xchar(struct tty_struct *tty, char ch); static void wait_until_sent(struct tty_struct *tty, int timeout); static int write_room(struct tty_struct *tty); @@ -771,8 +771,7 @@ static void close(struct tty_struct *tty, struct file *filp) if (info->flags & ASYNC_INITIALIZED) wait_until_sent(tty, info->timeout); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + flush_buffer(tty); tty_ldisc_flush(tty); shutdown(info); @@ -913,20 +912,24 @@ cleanup: return ret; } -static void put_char(struct tty_struct *tty, unsigned char ch) +static int put_char(struct tty_struct *tty, unsigned char ch) { struct slgt_info *info = tty->driver_data; unsigned long flags; + int ret; if (sanity_check(info, tty->name, "put_char")) - return; + return 0; DBGINFO(("%s put_char(%d)\n", info->device_name, ch)); if (!info->tx_buf) - return; + return 0; spin_lock_irqsave(&info->lock,flags); - if (!info->tx_active && (info->tx_count < info->max_frame_size)) + if (!info->tx_active && (info->tx_count < info->max_frame_size)) { info->tx_buf[info->tx_count++] = ch; + ret = 1; + } spin_unlock_irqrestore(&info->lock,flags); + return ret; } static void send_xchar(struct tty_struct *tty, char ch) @@ -967,6 +970,8 @@ static void wait_until_sent(struct tty_struct *tty, int timeout) * Note: use tight timings here to satisfy the NIST-PCTS. */ + lock_kernel(); + if (info->params.data_rate) { char_time = info->timeout/(32 * 5); if (!char_time) @@ -984,6 +989,7 @@ static void wait_until_sent(struct tty_struct *tty, int timeout) if (timeout && time_after(jiffies, orig_jiffies + timeout)) break; } + unlock_kernel(); exit: DBGINFO(("%s wait_until_sent exit\n", info->device_name)); @@ -1097,6 +1103,7 @@ static int ioctl(struct tty_struct *tty, struct file *file, struct serial_icounter_struct __user *p_cuser; /* user space */ unsigned long flags; void __user *argp = (void __user *)arg; + int ret; if (sanity_check(info, tty->name, "ioctl")) return -ENODEV; @@ -1108,37 +1115,54 @@ static int ioctl(struct tty_struct *tty, struct file *file, return -EIO; } + lock_kernel(); + switch (cmd) { case MGSL_IOCGPARAMS: - return get_params(info, argp); + ret = get_params(info, argp); + break; case MGSL_IOCSPARAMS: - return set_params(info, argp); + ret = set_params(info, argp); + break; case MGSL_IOCGTXIDLE: - return get_txidle(info, argp); + ret = get_txidle(info, argp); + break; case MGSL_IOCSTXIDLE: - return set_txidle(info, (int)arg); + ret = set_txidle(info, (int)arg); + break; case MGSL_IOCTXENABLE: - return tx_enable(info, (int)arg); + ret = tx_enable(info, (int)arg); + break; case MGSL_IOCRXENABLE: - return rx_enable(info, (int)arg); + ret = rx_enable(info, (int)arg); + break; case MGSL_IOCTXABORT: - return tx_abort(info); + ret = tx_abort(info); + break; case MGSL_IOCGSTATS: - return get_stats(info, argp); + ret = get_stats(info, argp); + break; case MGSL_IOCWAITEVENT: - return wait_mgsl_event(info, argp); + ret = wait_mgsl_event(info, argp); + break; case TIOCMIWAIT: - return modem_input_wait(info,(int)arg); + ret = modem_input_wait(info,(int)arg); + break; case MGSL_IOCGIF: - return get_interface(info, argp); + ret = get_interface(info, argp); + break; case MGSL_IOCSIF: - return set_interface(info,(int)arg); + ret = set_interface(info,(int)arg); + break; case MGSL_IOCSGPIO: - return set_gpio(info, argp); + ret = set_gpio(info, argp); + break; case MGSL_IOCGGPIO: - return get_gpio(info, argp); + ret = get_gpio(info, argp); + break; case MGSL_IOCWAITGPIO: - return wait_gpio(info, argp); + ret = wait_gpio(info, argp); + break; case TIOCGICOUNT: spin_lock_irqsave(&info->lock,flags); cnow = info->icount; @@ -1155,12 +1179,14 @@ static int ioctl(struct tty_struct *tty, struct file *file, put_user(cnow.parity, &p_cuser->parity) || put_user(cnow.brk, &p_cuser->brk) || put_user(cnow.buf_overrun, &p_cuser->buf_overrun)) - return -EFAULT; - return 0; + ret = -EFAULT; + ret = 0; + break; default: - return -ENOIOCTLCMD; + ret = -ENOIOCTLCMD; } - return 0; + unlock_kernel(); + return ret; } /* @@ -3324,7 +3350,7 @@ static int claim_resources(struct slgt_info *info) else info->reg_addr_requested = true; - info->reg_addr = ioremap(info->phys_reg_addr, SLGT_REG_SIZE); + info->reg_addr = ioremap_nocache(info->phys_reg_addr, SLGT_REG_SIZE); if (!info->reg_addr) { DBGERR(("%s cant map device registers, addr=%08X\n", info->device_name, info->phys_reg_addr)); diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c index e98c3e6f821..bec54866e0b 100644 --- a/drivers/char/synclinkmp.c +++ b/drivers/char/synclinkmp.c @@ -519,7 +519,7 @@ static void hangup(struct tty_struct *tty); static void set_termios(struct tty_struct *tty, struct ktermios *old_termios); static int write(struct tty_struct *tty, const unsigned char *buf, int count); -static void put_char(struct tty_struct *tty, unsigned char ch); +static int put_char(struct tty_struct *tty, unsigned char ch); static void send_xchar(struct tty_struct *tty, char ch); static void wait_until_sent(struct tty_struct *tty, int timeout); static int write_room(struct tty_struct *tty); @@ -862,8 +862,7 @@ static void close(struct tty_struct *tty, struct file *filp) if (info->flags & ASYNC_INITIALIZED) wait_until_sent(tty, info->timeout); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + flush_buffer(tty); tty_ldisc_flush(tty); @@ -1046,10 +1045,11 @@ cleanup: /* Add a character to the transmit buffer. */ -static void put_char(struct tty_struct *tty, unsigned char ch) +static int put_char(struct tty_struct *tty, unsigned char ch) { SLMP_INFO *info = (SLMP_INFO *)tty->driver_data; unsigned long flags; + int ret = 0; if ( debug_level >= DEBUG_LEVEL_INFO ) { printk( "%s(%d):%s put_char(%d)\n", @@ -1057,10 +1057,10 @@ static void put_char(struct tty_struct *tty, unsigned char ch) } if (sanity_check(info, tty->name, "put_char")) - return; + return 0; if (!info->tx_buf) - return; + return 0; spin_lock_irqsave(&info->lock,flags); @@ -1072,10 +1072,12 @@ static void put_char(struct tty_struct *tty, unsigned char ch) if (info->tx_put >= info->max_frame_size) info->tx_put -= info->max_frame_size; info->tx_count++; + ret = 1; } } spin_unlock_irqrestore(&info->lock,flags); + return ret; } /* Send a high-priority XON/XOFF character @@ -1119,6 +1121,8 @@ static void wait_until_sent(struct tty_struct *tty, int timeout) if (sanity_check(info, tty->name, "wait_until_sent")) return; + lock_kernel(); + if (!(info->flags & ASYNC_INITIALIZED)) goto exit; @@ -1161,6 +1165,7 @@ static void wait_until_sent(struct tty_struct *tty, int timeout) } exit: + unlock_kernel(); if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):%s wait_until_sent() exit\n", __FILE__,__LINE__, info->device_name ); @@ -1176,6 +1181,7 @@ static int write_room(struct tty_struct *tty) if (sanity_check(info, tty->name, "write_room")) return 0; + lock_kernel(); if (info->params.mode == MGSL_MODE_HDLC) { ret = (info->tx_active) ? 0 : HDLC_MAX_FRAME_SIZE; } else { @@ -1183,6 +1189,7 @@ static int write_room(struct tty_struct *tty) if (ret < 0) ret = 0; } + unlock_kernel(); if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):%s write_room()=%d\n", @@ -1303,7 +1310,7 @@ static void tx_release(struct tty_struct *tty) * * Return Value: 0 if success, otherwise error code */ -static int ioctl(struct tty_struct *tty, struct file *file, +static int do_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { SLMP_INFO *info = (SLMP_INFO *)tty->driver_data; @@ -1393,6 +1400,16 @@ static int ioctl(struct tty_struct *tty, struct file *file, return 0; } +static int ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg) +{ + int ret; + lock_kernel(); + ret = do_ioctl(tty, file, cmd, arg); + unlock_kernel(); + return ret; +} + /* * /proc fs routines.... */ @@ -3626,7 +3643,8 @@ static int claim_resources(SLMP_INFO *info) else info->sca_statctrl_requested = true; - info->memory_base = ioremap(info->phys_memory_base,SCA_MEM_SIZE); + info->memory_base = ioremap_nocache(info->phys_memory_base, + SCA_MEM_SIZE); if (!info->memory_base) { printk( "%s(%d):%s Cant map shared memory, MemAddr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_memory_base ); @@ -3634,7 +3652,7 @@ static int claim_resources(SLMP_INFO *info) goto errout; } - info->lcr_base = ioremap(info->phys_lcr_base,PAGE_SIZE); + info->lcr_base = ioremap_nocache(info->phys_lcr_base, PAGE_SIZE); if (!info->lcr_base) { printk( "%s(%d):%s Cant map LCR memory, MemAddr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_lcr_base ); @@ -3643,7 +3661,7 @@ static int claim_resources(SLMP_INFO *info) } info->lcr_base += info->lcr_offset; - info->sca_base = ioremap(info->phys_sca_base,PAGE_SIZE); + info->sca_base = ioremap_nocache(info->phys_sca_base, PAGE_SIZE); if (!info->sca_base) { printk( "%s(%d):%s Cant map SCA memory, MemAddr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_sca_base ); @@ -3652,7 +3670,8 @@ static int claim_resources(SLMP_INFO *info) } info->sca_base += info->sca_offset; - info->statctrl_base = ioremap(info->phys_statctrl_base,PAGE_SIZE); + info->statctrl_base = ioremap_nocache(info->phys_statctrl_base, + PAGE_SIZE); if (!info->statctrl_base) { printk( "%s(%d):%s Cant map SCA Status/Control memory, MemAddr=%08X\n", __FILE__,__LINE__,info->device_name, info->phys_statctrl_base ); diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c index 1ade193c912..9e9bad8bdcf 100644 --- a/drivers/char/sysrq.c +++ b/drivers/char/sysrq.c @@ -196,6 +196,48 @@ static struct sysrq_key_op sysrq_showlocks_op = { #define sysrq_showlocks_op (*(struct sysrq_key_op *)0) #endif +#ifdef CONFIG_SMP +static DEFINE_SPINLOCK(show_lock); + +static void showacpu(void *dummy) +{ + unsigned long flags; + + /* Idle CPUs have no interesting backtrace. */ + if (idle_cpu(smp_processor_id())) + return; + + spin_lock_irqsave(&show_lock, flags); + printk(KERN_INFO "CPU%d:\n", smp_processor_id()); + show_stack(NULL, NULL); + spin_unlock_irqrestore(&show_lock, flags); +} + +static void sysrq_showregs_othercpus(struct work_struct *dummy) +{ + smp_call_function(showacpu, NULL, 0, 0); +} + +static DECLARE_WORK(sysrq_showallcpus, sysrq_showregs_othercpus); + +static void sysrq_handle_showallcpus(int key, struct tty_struct *tty) +{ + struct pt_regs *regs = get_irq_regs(); + if (regs) { + printk(KERN_INFO "CPU%d:\n", smp_processor_id()); + show_regs(regs); + } + schedule_work(&sysrq_showallcpus); +} + +static struct sysrq_key_op sysrq_showallcpus_op = { + .handler = sysrq_handle_showallcpus, + .help_msg = "aLlcpus", + .action_msg = "Show backtrace of all active CPUs", + .enable_mask = SYSRQ_ENABLE_DUMP, +}; +#endif + static void sysrq_handle_showregs(int key, struct tty_struct *tty) { struct pt_regs *regs = get_irq_regs(); @@ -340,7 +382,11 @@ static struct sysrq_key_op *sysrq_key_table[36] = { &sysrq_kill_op, /* i */ NULL, /* j */ &sysrq_SAK_op, /* k */ +#ifdef CONFIG_SMP + &sysrq_showallcpus_op, /* l */ +#else NULL, /* l */ +#endif &sysrq_showmem_op, /* m */ &sysrq_unrt_op, /* n */ /* o: This will often be registered as 'Off' at init time */ diff --git a/drivers/char/toshiba.c b/drivers/char/toshiba.c index ce5ebe3b168..663cd15d7c7 100644 --- a/drivers/char/toshiba.c +++ b/drivers/char/toshiba.c @@ -426,7 +426,7 @@ static int tosh_probe(void) int i,major,minor,day,year,month,flag; unsigned char signature[7] = { 0x54,0x4f,0x53,0x48,0x49,0x42,0x41 }; SMMRegisters regs; - void __iomem *bios = ioremap(0xf0000, 0x10000); + void __iomem *bios = ioremap_cache(0xf0000, 0x10000); if (!bios) return -ENOMEM; @@ -520,12 +520,11 @@ static int __init toshiba_init(void) { struct proc_dir_entry *pde; - pde = create_proc_entry("toshiba", 0, NULL); + pde = proc_create("toshiba", 0, NULL, &proc_toshiba_fops); if (!pde) { misc_deregister(&tosh_device); return -ENOMEM; } - pde->proc_fops = &proc_toshiba_fops; } #endif diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig index 8f3f7620f95..3738cfa209f 100644 --- a/drivers/char/tpm/Kconfig +++ b/drivers/char/tpm/Kconfig @@ -23,7 +23,7 @@ if TCG_TPM config TCG_TIS tristate "TPM Interface Specification 1.2 Interface" - depends on PNPACPI + depends on PNP ---help--- If you have a TPM security chip that is compliant with the TCG TIS 1.2 TPM specification say Yes and it will be accessible @@ -32,7 +32,6 @@ config TCG_TIS config TCG_NSC tristate "National Semiconductor TPM Interface" - depends on PNPACPI ---help--- If you have a TPM security chip from National Semiconductor say Yes and it will be accessible from within Linux. To @@ -48,7 +47,7 @@ config TCG_ATMEL config TCG_INFINEON tristate "Infineon Technologies TPM Interface" - depends on PNPACPI + depends on PNP ---help--- If you have a TPM security chip from Infineon Technologies (either SLD 9630 TT 1.1 or SLB 9635 TT 1.2) say Yes and it diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c index 6313326bc41..ab18c1e7b11 100644 --- a/drivers/char/tpm/tpm_nsc.c +++ b/drivers/char/tpm/tpm_nsc.c @@ -264,7 +264,7 @@ static const struct tpm_vendor_specific tpm_nsc = { static struct platform_device *pdev = NULL; -static void __devexit tpm_nsc_remove(struct device *dev) +static void tpm_nsc_remove(struct device *dev) { struct tpm_chip *chip = dev_get_drvdata(dev); if ( chip ) { diff --git a/drivers/char/tty_audit.c b/drivers/char/tty_audit.c index 7722466e052..3582f43345a 100644 --- a/drivers/char/tty_audit.c +++ b/drivers/char/tty_audit.c @@ -11,6 +11,7 @@ #include <linux/audit.h> #include <linux/file.h> +#include <linux/fdtable.h> #include <linux/tty.h> struct tty_audit_buf { @@ -92,7 +93,7 @@ static void tty_audit_buf_push(struct task_struct *tsk, uid_t loginuid, get_task_comm(name, tsk); audit_log_untrustedstring(ab, name); audit_log_format(ab, " data="); - audit_log_n_untrustedstring(ab, buf->valid, buf->data); + audit_log_n_untrustedstring(ab, buf->data, buf->valid); audit_log_end(ab); } buf->valid = 0; @@ -151,14 +152,9 @@ void tty_audit_fork(struct signal_struct *sig) /** * tty_audit_push_task - Flush task's pending audit data */ -void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid) +void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid, u32 sessionid) { struct tty_audit_buf *buf; - /* FIXME I think this is correct. Check against netlink once that is - * I really need to read this code more closely. But that's for - * another patch. - */ - unsigned int sessionid = audit_get_sessionid(tsk); spin_lock_irq(&tsk->sighand->siglock); buf = tsk->signal->tty_audit_buf; @@ -238,6 +234,10 @@ void tty_audit_add_data(struct tty_struct *tty, unsigned char *data, if (unlikely(size == 0)) return; + if (tty->driver->type == TTY_DRIVER_TYPE_PTY + && tty->driver->subtype == PTY_TYPE_MASTER) + return; + buf = tty_audit_buf_get(tty); if (!buf) return; @@ -300,53 +300,3 @@ void tty_audit_push(struct tty_struct *tty) tty_audit_buf_put(buf); } } - -/** - * tty_audit_opening - A TTY is being opened. - * - * As a special hack, tasks that close all their TTYs and open new ones - * are assumed to be system daemons (e.g. getty) and auditing is - * automatically disabled for them. - */ -void tty_audit_opening(void) -{ - int disable; - - disable = 1; - spin_lock_irq(¤t->sighand->siglock); - if (current->signal->audit_tty == 0) - disable = 0; - spin_unlock_irq(¤t->sighand->siglock); - if (!disable) - return; - - task_lock(current); - if (current->files) { - struct fdtable *fdt; - unsigned i; - - /* - * We don't take a ref to the file, so we must hold ->file_lock - * instead. - */ - spin_lock(¤t->files->file_lock); - fdt = files_fdtable(current->files); - for (i = 0; i < fdt->max_fds; i++) { - struct file *filp; - - filp = fcheck_files(current->files, i); - if (filp && is_tty(filp)) { - disable = 0; - break; - } - } - spin_unlock(¤t->files->file_lock); - } - task_unlock(current); - if (!disable) - return; - - spin_lock_irq(¤t->sighand->siglock); - current->signal->audit_tty = 0; - spin_unlock_irq(¤t->sighand->siglock); -} diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 98b65a23099..49c1a2267a5 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -78,6 +78,7 @@ #include <linux/tty_flip.h> #include <linux/devpts_fs.h> #include <linux/file.h> +#include <linux/fdtable.h> #include <linux/console.h> #include <linux/timer.h> #include <linux/ctype.h> @@ -91,7 +92,6 @@ #include <linux/module.h> #include <linux/smp_lock.h> #include <linux/device.h> -#include <linux/idr.h> #include <linux/wait.h> #include <linux/bitops.h> #include <linux/delay.h> @@ -137,9 +137,6 @@ EXPORT_SYMBOL(tty_mutex); #ifdef CONFIG_UNIX98_PTYS extern struct tty_driver *ptm_driver; /* Unix98 pty masters; for /dev/ptmx */ -extern int pty_limit; /* Config limit on Unix98 ptys */ -static DEFINE_IDR(allocated_ptys); -static DEFINE_MUTEX(allocated_ptys_lock); static int ptmx_open(struct inode *, struct file *); #endif @@ -152,8 +149,7 @@ ssize_t redirected_tty_write(struct file *, const char __user *, static unsigned int tty_poll(struct file *, poll_table *); static int tty_open(struct inode *, struct file *); static int tty_release(struct inode *, struct file *); -int tty_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg); +long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg); #ifdef CONFIG_COMPAT static long tty_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); @@ -1109,8 +1105,8 @@ restart: a reference to the old ldisc. If we ended up flipping back to the existing ldisc we have two references to it */ - if (tty->ldisc.num != o_ldisc.num && tty->driver->set_ldisc) - tty->driver->set_ldisc(tty); + if (tty->ldisc.num != o_ldisc.num && tty->ops->set_ldisc) + tty->ops->set_ldisc(tty); tty_ldisc_put(o_ldisc.num); @@ -1182,9 +1178,8 @@ struct tty_driver *tty_find_polling_driver(char *name, int *line) if (*str == '\0') str = NULL; - if (tty_line >= 0 && tty_line <= p->num && p->poll_init && - !p->poll_init(p, tty_line, str)) { - + if (tty_line >= 0 && tty_line <= p->num && p->ops && + p->ops->poll_init && !p->ops->poll_init(p, tty_line, str)) { res = p; *line = tty_line; break; @@ -1205,26 +1200,37 @@ EXPORT_SYMBOL_GPL(tty_find_polling_driver); * not in the foreground, send a SIGTTOU. If the signal is blocked or * ignored, go ahead and perform the operation. (POSIX 7.2) * - * Locking: none + * Locking: ctrl_lock */ int tty_check_change(struct tty_struct *tty) { + unsigned long flags; + int ret = 0; + if (current->signal->tty != tty) return 0; + + spin_lock_irqsave(&tty->ctrl_lock, flags); + if (!tty->pgrp) { printk(KERN_WARNING "tty_check_change: tty->pgrp == NULL!\n"); - return 0; + goto out; } if (task_pgrp(current) == tty->pgrp) - return 0; + goto out; if (is_ignored(SIGTTOU)) - return 0; - if (is_current_pgrp_orphaned()) - return -EIO; + goto out; + if (is_current_pgrp_orphaned()) { + ret = -EIO; + goto out; + } kill_pgrp(task_pgrp(current), SIGTTOU, 1); set_thread_flag(TIF_SIGPENDING); - return -ERESTARTSYS; + ret = -ERESTARTSYS; +out: + spin_unlock_irqrestore(&tty->ctrl_lock, flags); + return ret; } EXPORT_SYMBOL(tty_check_change); @@ -1247,8 +1253,8 @@ static unsigned int hung_up_tty_poll(struct file *filp, poll_table *wait) return POLLIN | POLLOUT | POLLERR | POLLHUP | POLLRDNORM | POLLWRNORM; } -static int hung_up_tty_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) +static long hung_up_tty_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) { return cmd == TIOCSPGRP ? -ENOTTY : -EIO; } @@ -1264,7 +1270,7 @@ static const struct file_operations tty_fops = { .read = tty_read, .write = tty_write, .poll = tty_poll, - .ioctl = tty_ioctl, + .unlocked_ioctl = tty_ioctl, .compat_ioctl = tty_compat_ioctl, .open = tty_open, .release = tty_release, @@ -1277,7 +1283,7 @@ static const struct file_operations ptmx_fops = { .read = tty_read, .write = tty_write, .poll = tty_poll, - .ioctl = tty_ioctl, + .unlocked_ioctl = tty_ioctl, .compat_ioctl = tty_compat_ioctl, .open = ptmx_open, .release = tty_release, @@ -1290,7 +1296,7 @@ static const struct file_operations console_fops = { .read = tty_read, .write = redirected_tty_write, .poll = tty_poll, - .ioctl = tty_ioctl, + .unlocked_ioctl = tty_ioctl, .compat_ioctl = tty_compat_ioctl, .open = tty_open, .release = tty_release, @@ -1302,7 +1308,7 @@ static const struct file_operations hung_up_tty_fops = { .read = hung_up_tty_read, .write = hung_up_tty_write, .poll = hung_up_tty_poll, - .ioctl = hung_up_tty_ioctl, + .unlocked_ioctl = hung_up_tty_ioctl, .compat_ioctl = hung_up_tty_compat_ioctl, .release = tty_release, }; @@ -1404,6 +1410,7 @@ static void do_tty_hangup(struct work_struct *work) struct task_struct *p; struct tty_ldisc *ld; int closecount = 0, n; + unsigned long flags; if (!tty) return; @@ -1441,8 +1448,7 @@ static void do_tty_hangup(struct work_struct *work) /* We may have no line discipline at this point */ if (ld->flush_buffer) ld->flush_buffer(tty); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + tty_driver_flush_buffer(tty); if ((test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags)) && ld->write_wakeup) ld->write_wakeup(tty); @@ -1480,19 +1486,24 @@ static void do_tty_hangup(struct work_struct *work) __group_send_sig_info(SIGHUP, SEND_SIG_PRIV, p); __group_send_sig_info(SIGCONT, SEND_SIG_PRIV, p); put_pid(p->signal->tty_old_pgrp); /* A noop */ + spin_lock_irqsave(&tty->ctrl_lock, flags); if (tty->pgrp) p->signal->tty_old_pgrp = get_pid(tty->pgrp); + spin_unlock_irqrestore(&tty->ctrl_lock, flags); spin_unlock_irq(&p->sighand->siglock); } while_each_pid_task(tty->session, PIDTYPE_SID, p); } read_unlock(&tasklist_lock); + spin_lock_irqsave(&tty->ctrl_lock, flags); tty->flags = 0; put_pid(tty->session); put_pid(tty->pgrp); tty->session = NULL; tty->pgrp = NULL; tty->ctrl_status = 0; + spin_unlock_irqrestore(&tty->ctrl_lock, flags); + /* * If one of the devices matches a console pointer, we * cannot just call hangup() because that will cause @@ -1500,11 +1511,11 @@ static void do_tty_hangup(struct work_struct *work) * So we just call close() the right number of times. */ if (cons_filp) { - if (tty->driver->close) + if (tty->ops->close) for (n = 0; n < closecount; n++) - tty->driver->close(tty, cons_filp); - } else if (tty->driver->hangup) - (tty->driver->hangup)(tty); + tty->ops->close(tty, cons_filp); + } else if (tty->ops->hangup) + (tty->ops->hangup)(tty); /* * We don't want to have driver/ldisc interactions beyond * the ones we did here. The driver layer expects no @@ -1626,16 +1637,17 @@ void disassociate_ctty(int on_exit) struct tty_struct *tty; struct pid *tty_pgrp = NULL; - lock_kernel(); mutex_lock(&tty_mutex); tty = get_current_tty(); if (tty) { tty_pgrp = get_pid(tty->pgrp); mutex_unlock(&tty_mutex); + lock_kernel(); /* XXX: here we race, there is nothing protecting tty */ if (on_exit && tty->driver->type != TTY_DRIVER_TYPE_PTY) tty_vhangup(tty); + unlock_kernel(); } else if (on_exit) { struct pid *old_pgrp; spin_lock_irq(¤t->sighand->siglock); @@ -1648,7 +1660,6 @@ void disassociate_ctty(int on_exit) put_pid(old_pgrp); } mutex_unlock(&tty_mutex); - unlock_kernel(); return; } if (tty_pgrp) { @@ -1667,10 +1678,13 @@ void disassociate_ctty(int on_exit) /* It is possible that do_tty_hangup has free'd this tty */ tty = get_current_tty(); if (tty) { + unsigned long flags; + spin_lock_irqsave(&tty->ctrl_lock, flags); put_pid(tty->session); put_pid(tty->pgrp); tty->session = NULL; tty->pgrp = NULL; + spin_unlock_irqrestore(&tty->ctrl_lock, flags); } else { #ifdef TTY_DEBUG_HANGUP printk(KERN_DEBUG "error attempted to write to tty [0x%p]" @@ -1683,7 +1697,6 @@ void disassociate_ctty(int on_exit) read_lock(&tasklist_lock); session_clear_tty(task_session(current)); read_unlock(&tasklist_lock); - unlock_kernel(); } /** @@ -1693,8 +1706,10 @@ void disassociate_ctty(int on_exit) void no_tty(void) { struct task_struct *tsk = current; + lock_kernel(); if (tsk->signal->leader) disassociate_ctty(0); + unlock_kernel(); proc_clear_tty(tsk); } @@ -1714,21 +1729,26 @@ void no_tty(void) * but not always. * * Locking: - * Broken. Relies on BKL which is unsafe here. + * Uses the tty control lock internally */ void stop_tty(struct tty_struct *tty) { - if (tty->stopped) + unsigned long flags; + spin_lock_irqsave(&tty->ctrl_lock, flags); + if (tty->stopped) { + spin_unlock_irqrestore(&tty->ctrl_lock, flags); return; + } tty->stopped = 1; if (tty->link && tty->link->packet) { tty->ctrl_status &= ~TIOCPKT_START; tty->ctrl_status |= TIOCPKT_STOP; wake_up_interruptible(&tty->link->read_wait); } - if (tty->driver->stop) - (tty->driver->stop)(tty); + spin_unlock_irqrestore(&tty->ctrl_lock, flags); + if (tty->ops->stop) + (tty->ops->stop)(tty); } EXPORT_SYMBOL(stop_tty); @@ -1743,21 +1763,26 @@ EXPORT_SYMBOL(stop_tty); * driver start method is invoked and the line discipline woken. * * Locking: - * Broken. Relies on BKL which is unsafe here. + * ctrl_lock */ void start_tty(struct tty_struct *tty) { - if (!tty->stopped || tty->flow_stopped) + unsigned long flags; + spin_lock_irqsave(&tty->ctrl_lock, flags); + if (!tty->stopped || tty->flow_stopped) { + spin_unlock_irqrestore(&tty->ctrl_lock, flags); return; + } tty->stopped = 0; if (tty->link && tty->link->packet) { tty->ctrl_status &= ~TIOCPKT_STOP; tty->ctrl_status |= TIOCPKT_START; wake_up_interruptible(&tty->link->read_wait); } - if (tty->driver->start) - (tty->driver->start)(tty); + spin_unlock_irqrestore(&tty->ctrl_lock, flags); + if (tty->ops->start) + (tty->ops->start)(tty); /* If we have a running line discipline it may need kicking */ tty_wakeup(tty); } @@ -1775,10 +1800,8 @@ EXPORT_SYMBOL(start_tty); * for hung up devices before calling the line discipline method. * * Locking: - * Locks the line discipline internally while needed - * For historical reasons the line discipline read method is - * invoked under the BKL. This will go away in time so do not rely on it - * in new code. Multiple read calls may be outstanding in parallel. + * Locks the line discipline internally while needed. Multiple + * read calls may be outstanding in parallel. */ static ssize_t tty_read(struct file *file, char __user *buf, size_t count, @@ -1799,13 +1822,11 @@ static ssize_t tty_read(struct file *file, char __user *buf, size_t count, /* We want to wait for the line discipline to sort out in this situation */ ld = tty_ldisc_ref_wait(tty); - lock_kernel(); if (ld->read) i = (ld->read)(tty, file, buf, count); else i = -EIO; tty_ldisc_deref(ld); - unlock_kernel(); if (i > 0) inode->i_atime = current_fs_time(inode->i_sb); return i; @@ -1893,9 +1914,7 @@ static inline ssize_t do_tty_write( ret = -EFAULT; if (copy_from_user(tty->write_buf, buf, size)) break; - lock_kernel(); ret = write(tty, file, tty->write_buf, size); - unlock_kernel(); if (ret <= 0) break; written += ret; @@ -1948,10 +1967,13 @@ static ssize_t tty_write(struct file *file, const char __user *buf, tty = (struct tty_struct *)file->private_data; if (tty_paranoia_check(tty, inode, "tty_write")) return -EIO; - if (!tty || !tty->driver->write || + if (!tty || !tty->ops->write || (test_bit(TTY_IO_ERROR, &tty->flags))) return -EIO; - + /* Short term debug to catch buggy drivers */ + if (tty->ops->write_room == NULL) + printk(KERN_ERR "tty driver %s lacks a write_room method.\n", + tty->driver->name); ld = tty_ldisc_ref_wait(tty); if (!ld->write) ret = -EIO; @@ -2098,6 +2120,7 @@ static int init_dev(struct tty_driver *driver, int idx, goto fail_no_mem; initialize_tty_struct(tty); tty->driver = driver; + tty->ops = driver->ops; tty->index = idx; tty_line_name(driver, idx, tty->name); @@ -2128,6 +2151,7 @@ static int init_dev(struct tty_driver *driver, int idx, goto free_mem_out; initialize_tty_struct(o_tty); o_tty->driver = driver->other; + o_tty->ops = driver->ops; o_tty->index = idx; tty_line_name(driver->other, idx, o_tty->name); @@ -2432,8 +2456,8 @@ static void release_dev(struct file *filp) } } #endif - if (tty->driver->close) - tty->driver->close(tty, filp); + if (tty->ops->close) + tty->ops->close(tty, filp); /* * Sanity check: if tty->count is going to zero, there shouldn't be @@ -2612,15 +2636,9 @@ static void release_dev(struct file *filp) */ release_tty(tty, idx); -#ifdef CONFIG_UNIX98_PTYS /* Make this pty number available for reallocation */ - if (devpts) { - mutex_lock(&allocated_ptys_lock); - idr_remove(&allocated_ptys, idx); - mutex_unlock(&allocated_ptys_lock); - } -#endif - + if (devpts) + devpts_kill_index(idx); } /** @@ -2716,8 +2734,8 @@ got_driver: printk(KERN_DEBUG "opening %s...", tty->name); #endif if (!retval) { - if (tty->driver->open) - retval = tty->driver->open(tty, filp); + if (tty->ops->open) + retval = tty->ops->open(tty, filp); else retval = -ENODEV; } @@ -2755,7 +2773,6 @@ got_driver: __proc_set_tty(current, tty); spin_unlock_irq(¤t->sighand->siglock); mutex_unlock(&tty_mutex); - tty_audit_opening(); return 0; } @@ -2777,29 +2794,13 @@ static int ptmx_open(struct inode *inode, struct file *filp) struct tty_struct *tty; int retval; int index; - int idr_ret; nonseekable_open(inode, filp); /* find a device that is not in use. */ - mutex_lock(&allocated_ptys_lock); - if (!idr_pre_get(&allocated_ptys, GFP_KERNEL)) { - mutex_unlock(&allocated_ptys_lock); - return -ENOMEM; - } - idr_ret = idr_get_new(&allocated_ptys, NULL, &index); - if (idr_ret < 0) { - mutex_unlock(&allocated_ptys_lock); - if (idr_ret == -EAGAIN) - return -ENOMEM; - return -EIO; - } - if (index >= pty_limit) { - idr_remove(&allocated_ptys, index); - mutex_unlock(&allocated_ptys_lock); - return -EIO; - } - mutex_unlock(&allocated_ptys_lock); + index = devpts_new_index(); + if (index < 0) + return index; mutex_lock(&tty_mutex); retval = init_dev(ptm_driver, index, &tty); @@ -2812,23 +2813,19 @@ static int ptmx_open(struct inode *inode, struct file *filp) filp->private_data = tty; file_move(filp, &tty->tty_files); - retval = -ENOMEM; - if (devpts_pty_new(tty->link)) + retval = devpts_pty_new(tty->link); + if (retval) goto out1; - check_tty_count(tty, "tty_open"); - retval = ptm_driver->open(tty, filp); - if (!retval) { - tty_audit_opening(); + check_tty_count(tty, "ptmx_open"); + retval = ptm_driver->ops->open(tty, filp); + if (!retval) return 0; - } out1: release_dev(filp); return retval; out: - mutex_lock(&allocated_ptys_lock); - idr_remove(&allocated_ptys, index); - mutex_unlock(&allocated_ptys_lock); + devpts_kill_index(index); return retval; } #endif @@ -2885,6 +2882,7 @@ static unsigned int tty_poll(struct file *filp, poll_table *wait) static int tty_fasync(int fd, struct file *filp, int on) { struct tty_struct *tty; + unsigned long flags; int retval; tty = (struct tty_struct *)filp->private_data; @@ -2900,6 +2898,7 @@ static int tty_fasync(int fd, struct file *filp, int on) struct pid *pid; if (!waitqueue_active(&tty->read_wait)) tty->minimum_to_wake = 1; + spin_lock_irqsave(&tty->ctrl_lock, flags); if (tty->pgrp) { pid = tty->pgrp; type = PIDTYPE_PGID; @@ -2907,6 +2906,7 @@ static int tty_fasync(int fd, struct file *filp, int on) pid = task_pid(current); type = PIDTYPE_PID; } + spin_unlock_irqrestore(&tty->ctrl_lock, flags); retval = __f_setown(filp, pid, type, 0); if (retval) return retval; @@ -2992,6 +2992,8 @@ static int tiocswinsz(struct tty_struct *tty, struct tty_struct *real_tty, struct winsize __user *arg) { struct winsize tmp_ws; + struct pid *pgrp, *rpgrp; + unsigned long flags; if (copy_from_user(&tmp_ws, arg, sizeof(*arg))) return -EFAULT; @@ -3009,10 +3011,21 @@ static int tiocswinsz(struct tty_struct *tty, struct tty_struct *real_tty, } } #endif - if (tty->pgrp) - kill_pgrp(tty->pgrp, SIGWINCH, 1); - if ((real_tty->pgrp != tty->pgrp) && real_tty->pgrp) - kill_pgrp(real_tty->pgrp, SIGWINCH, 1); + /* Get the PID values and reference them so we can + avoid holding the tty ctrl lock while sending signals */ + spin_lock_irqsave(&tty->ctrl_lock, flags); + pgrp = get_pid(tty->pgrp); + rpgrp = get_pid(real_tty->pgrp); + spin_unlock_irqrestore(&tty->ctrl_lock, flags); + + if (pgrp) + kill_pgrp(pgrp, SIGWINCH, 1); + if (rpgrp != pgrp && rpgrp) + kill_pgrp(rpgrp, SIGWINCH, 1); + + put_pid(pgrp); + put_pid(rpgrp); + tty->winsize = tmp_ws; real_tty->winsize = tmp_ws; done: @@ -3073,10 +3086,13 @@ static int fionbio(struct file *file, int __user *p) if (get_user(nonblock, p)) return -EFAULT; + /* file->f_flags is still BKL protected in the fs layer - vomit */ + lock_kernel(); if (nonblock) file->f_flags |= O_NONBLOCK; else file->f_flags &= ~O_NONBLOCK; + unlock_kernel(); return 0; } @@ -3134,6 +3150,27 @@ unlock: } /** + * tty_get_pgrp - return a ref counted pgrp pid + * @tty: tty to read + * + * Returns a refcounted instance of the pid struct for the process + * group controlling the tty. + */ + +struct pid *tty_get_pgrp(struct tty_struct *tty) +{ + unsigned long flags; + struct pid *pgrp; + + spin_lock_irqsave(&tty->ctrl_lock, flags); + pgrp = get_pid(tty->pgrp); + spin_unlock_irqrestore(&tty->ctrl_lock, flags); + + return pgrp; +} +EXPORT_SYMBOL_GPL(tty_get_pgrp); + +/** * tiocgpgrp - get process group * @tty: tty passed by user * @real_tty: tty side of the tty pased by the user if a pty else the tty @@ -3147,13 +3184,18 @@ unlock: static int tiocgpgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t __user *p) { + struct pid *pid; + int ret; /* * (tty == real_tty) is a cheap way of * testing if the tty is NOT a master pty. */ if (tty == real_tty && current->signal->tty != real_tty) return -ENOTTY; - return put_user(pid_vnr(real_tty->pgrp), p); + pid = tty_get_pgrp(real_tty); + ret = put_user(pid_vnr(pid), p); + put_pid(pid); + return ret; } /** @@ -3165,7 +3207,7 @@ static int tiocgpgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t * Set the process group of the tty to the session passed. Only * permitted where the tty session is our session. * - * Locking: None + * Locking: RCU, ctrl lock */ static int tiocspgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t __user *p) @@ -3173,6 +3215,7 @@ static int tiocspgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t struct pid *pgrp; pid_t pgrp_nr; int retval = tty_check_change(real_tty); + unsigned long flags; if (retval == -EIO) return -ENOTTY; @@ -3195,8 +3238,10 @@ static int tiocspgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t if (session_of_pgrp(pgrp) != task_session(current)) goto out_unlock; retval = 0; + spin_lock_irqsave(&tty->ctrl_lock, flags); put_pid(real_tty->pgrp); real_tty->pgrp = get_pid(pgrp); + spin_unlock_irqrestore(&tty->ctrl_lock, flags); out_unlock: rcu_read_unlock(); return retval; @@ -3240,10 +3285,16 @@ static int tiocgsid(struct tty_struct *tty, struct tty_struct *real_tty, pid_t _ static int tiocsetd(struct tty_struct *tty, int __user *p) { int ldisc; + int ret; if (get_user(ldisc, p)) return -EFAULT; - return tty_set_ldisc(tty, ldisc); + + lock_kernel(); + ret = tty_set_ldisc(tty, ldisc); + unlock_kernel(); + + return ret; } /** @@ -3263,18 +3314,18 @@ static int send_break(struct tty_struct *tty, unsigned int duration) { if (tty_write_lock(tty, 0) < 0) return -EINTR; - tty->driver->break_ctl(tty, -1); + tty->ops->break_ctl(tty, -1); if (!signal_pending(current)) msleep_interruptible(duration); - tty->driver->break_ctl(tty, 0); + tty->ops->break_ctl(tty, 0); tty_write_unlock(tty); - if (signal_pending(current)) + if (!signal_pending(current)) return -EINTR; return 0; } /** - * tiocmget - get modem status + * tty_tiocmget - get modem status * @tty: tty device * @file: user file pointer * @p: pointer to result @@ -3289,8 +3340,8 @@ static int tty_tiocmget(struct tty_struct *tty, struct file *file, int __user *p { int retval = -EINVAL; - if (tty->driver->tiocmget) { - retval = tty->driver->tiocmget(tty, file); + if (tty->ops->tiocmget) { + retval = tty->ops->tiocmget(tty, file); if (retval >= 0) retval = put_user(retval, p); @@ -3299,7 +3350,7 @@ static int tty_tiocmget(struct tty_struct *tty, struct file *file, int __user *p } /** - * tiocmset - set modem status + * tty_tiocmset - set modem status * @tty: tty device * @file: user file pointer * @cmd: command - clear bits, set bits or set all @@ -3316,7 +3367,7 @@ static int tty_tiocmset(struct tty_struct *tty, struct file *file, unsigned int { int retval = -EINVAL; - if (tty->driver->tiocmset) { + if (tty->ops->tiocmset) { unsigned int set, clear, val; retval = get_user(val, p); @@ -3340,7 +3391,7 @@ static int tty_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set &= TIOCM_DTR|TIOCM_RTS|TIOCM_OUT1|TIOCM_OUT2|TIOCM_LOOP; clear &= TIOCM_DTR|TIOCM_RTS|TIOCM_OUT1|TIOCM_OUT2|TIOCM_LOOP; - retval = tty->driver->tiocmset(tty, file, set, clear); + retval = tty->ops->tiocmset(tty, file, set, clear); } return retval; } @@ -3348,20 +3399,18 @@ static int tty_tiocmset(struct tty_struct *tty, struct file *file, unsigned int /* * Split this up, as gcc can choke on it otherwise.. */ -int tty_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) +long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct tty_struct *tty, *real_tty; void __user *p = (void __user *)arg; int retval; struct tty_ldisc *ld; + struct inode *inode = file->f_dentry->d_inode; tty = (struct tty_struct *)file->private_data; if (tty_paranoia_check(tty, inode, "tty_ioctl")) return -EINVAL; - /* CHECKME: is this safe as one end closes ? */ - real_tty = tty; if (tty->driver->type == TTY_DRIVER_TYPE_PTY && tty->driver->subtype == PTY_TYPE_MASTER) @@ -3370,21 +3419,28 @@ int tty_ioctl(struct inode *inode, struct file *file, /* * Break handling by driver */ - if (!tty->driver->break_ctl) { + + retval = -EINVAL; + + if (!tty->ops->break_ctl) { switch (cmd) { case TIOCSBRK: case TIOCCBRK: - if (tty->driver->ioctl) - return tty->driver->ioctl(tty, file, cmd, arg); - return -EINVAL; + if (tty->ops->ioctl) + retval = tty->ops->ioctl(tty, file, cmd, arg); + if (retval != -EINVAL && retval != -ENOIOCTLCMD) + printk(KERN_WARNING "tty: driver %s needs updating to use break_ctl\n", tty->driver->name); + return retval; /* These two ioctl's always return success; even if */ /* the driver doesn't support them. */ case TCSBRK: case TCSBRKP: - if (!tty->driver->ioctl) + if (!tty->ops->ioctl) return 0; - retval = tty->driver->ioctl(tty, file, cmd, arg); + retval = tty->ops->ioctl(tty, file, cmd, arg); + if (retval != -EINVAL && retval != -ENOIOCTLCMD) + printk(KERN_WARNING "tty: driver %s needs updating to use break_ctl\n", tty->driver->name); if (retval == -ENOIOCTLCMD) retval = 0; return retval; @@ -3442,7 +3498,6 @@ int tty_ioctl(struct inode *inode, struct file *file, case TIOCGSID: return tiocgsid(tty, real_tty, p); case TIOCGETD: - /* FIXME: check this is ok */ return put_user(tty->ldisc.num, (int __user *)p); case TIOCSETD: return tiocsetd(tty, p); @@ -3454,11 +3509,13 @@ int tty_ioctl(struct inode *inode, struct file *file, * Break handling */ case TIOCSBRK: /* Turn break on, unconditionally */ - tty->driver->break_ctl(tty, -1); + if (tty->ops->break_ctl) + tty->ops->break_ctl(tty, -1); return 0; case TIOCCBRK: /* Turn break off, unconditionally */ - tty->driver->break_ctl(tty, 0); + if (tty->ops->break_ctl) + tty->ops->break_ctl(tty, 0); return 0; case TCSBRK: /* SVID version: non-zero arg --> no break */ /* non-zero arg means wait for all output data @@ -3487,8 +3544,8 @@ int tty_ioctl(struct inode *inode, struct file *file, } break; } - if (tty->driver->ioctl) { - retval = (tty->driver->ioctl)(tty, file, cmd, arg); + if (tty->ops->ioctl) { + retval = (tty->ops->ioctl)(tty, file, cmd, arg); if (retval != -ENOIOCTLCMD) return retval; } @@ -3515,8 +3572,8 @@ static long tty_compat_ioctl(struct file *file, unsigned int cmd, if (tty_paranoia_check(tty, inode, "tty_ioctl")) return -EINVAL; - if (tty->driver->compat_ioctl) { - retval = (tty->driver->compat_ioctl)(tty, file, cmd, arg); + if (tty->ops->compat_ioctl) { + retval = (tty->ops->compat_ioctl)(tty, file, cmd, arg); if (retval != -ENOIOCTLCMD) return retval; } @@ -3566,8 +3623,7 @@ void __do_SAK(struct tty_struct *tty) tty_ldisc_flush(tty); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + tty_driver_flush_buffer(tty); read_lock(&tasklist_lock); /* Kill the entire session */ @@ -3773,19 +3829,32 @@ static void initialize_tty_struct(struct tty_struct *tty) mutex_init(&tty->atomic_read_lock); mutex_init(&tty->atomic_write_lock); spin_lock_init(&tty->read_lock); + spin_lock_init(&tty->ctrl_lock); INIT_LIST_HEAD(&tty->tty_files); INIT_WORK(&tty->SAK_work, do_SAK_work); } -/* - * The default put_char routine if the driver did not define one. +/** + * tty_put_char - write one character to a tty + * @tty: tty + * @ch: character + * + * Write one byte to the tty using the provided put_char method + * if present. Returns the number of characters successfully output. + * + * Note: the specific put_char operation in the driver layer may go + * away soon. Don't call it directly, use this method */ -static void tty_default_put_char(struct tty_struct *tty, unsigned char ch) +int tty_put_char(struct tty_struct *tty, unsigned char ch) { - tty->driver->write(tty, &ch, 1); + if (tty->ops->put_char) + return tty->ops->put_char(tty, ch); + return tty->ops->write(tty, &ch, 1); } +EXPORT_SYMBOL_GPL(tty_put_char); + static struct class *tty_class; /** @@ -3868,37 +3937,8 @@ void put_tty_driver(struct tty_driver *driver) void tty_set_operations(struct tty_driver *driver, const struct tty_operations *op) { - driver->open = op->open; - driver->close = op->close; - driver->write = op->write; - driver->put_char = op->put_char; - driver->flush_chars = op->flush_chars; - driver->write_room = op->write_room; - driver->chars_in_buffer = op->chars_in_buffer; - driver->ioctl = op->ioctl; - driver->compat_ioctl = op->compat_ioctl; - driver->set_termios = op->set_termios; - driver->throttle = op->throttle; - driver->unthrottle = op->unthrottle; - driver->stop = op->stop; - driver->start = op->start; - driver->hangup = op->hangup; - driver->break_ctl = op->break_ctl; - driver->flush_buffer = op->flush_buffer; - driver->set_ldisc = op->set_ldisc; - driver->wait_until_sent = op->wait_until_sent; - driver->send_xchar = op->send_xchar; - driver->read_proc = op->read_proc; - driver->write_proc = op->write_proc; - driver->tiocmget = op->tiocmget; - driver->tiocmset = op->tiocmset; -#ifdef CONFIG_CONSOLE_POLL - driver->poll_init = op->poll_init; - driver->poll_get_char = op->poll_get_char; - driver->poll_put_char = op->poll_put_char; -#endif -} - + driver->ops = op; +}; EXPORT_SYMBOL(alloc_tty_driver); EXPORT_SYMBOL(put_tty_driver); @@ -3961,9 +4001,6 @@ int tty_register_driver(struct tty_driver *driver) return error; } - if (!driver->put_char) - driver->put_char = tty_default_put_char; - mutex_lock(&tty_mutex); list_add(&driver->tty_drivers, &tty_drivers); mutex_unlock(&tty_mutex); @@ -4039,14 +4076,19 @@ void proc_clear_tty(struct task_struct *p) } EXPORT_SYMBOL(proc_clear_tty); +/* Called under the sighand lock */ + static void __proc_set_tty(struct task_struct *tsk, struct tty_struct *tty) { if (tty) { - /* We should not have a session or pgrp to here but.... */ + unsigned long flags; + /* We should not have a session or pgrp to put here but.... */ + spin_lock_irqsave(&tty->ctrl_lock, flags); put_pid(tty->session); put_pid(tty->pgrp); - tty->session = get_pid(task_session(tsk)); tty->pgrp = get_pid(task_pgrp(tsk)); + spin_unlock_irqrestore(&tty->ctrl_lock, flags); + tty->session = get_pid(task_session(tsk)); } put_pid(tsk->signal->tty_old_pgrp); tsk->signal->tty = tty; diff --git a/drivers/char/tty_ioctl.c b/drivers/char/tty_ioctl.c index f95a80b2265..b1a757a5ee2 100644 --- a/drivers/char/tty_ioctl.c +++ b/drivers/char/tty_ioctl.c @@ -21,6 +21,7 @@ #include <linux/module.h> #include <linux/bitops.h> #include <linux/mutex.h> +#include <linux/smp_lock.h> #include <asm/io.h> #include <asm/uaccess.h> @@ -39,6 +40,50 @@ #define TERMIOS_OLD 8 +int tty_chars_in_buffer(struct tty_struct *tty) +{ + if (tty->ops->chars_in_buffer) + return tty->ops->chars_in_buffer(tty); + else + return 0; +} + +EXPORT_SYMBOL(tty_chars_in_buffer); + +int tty_write_room(struct tty_struct *tty) +{ + if (tty->ops->write_room) + return tty->ops->write_room(tty); + return 2048; +} + +EXPORT_SYMBOL(tty_write_room); + +void tty_driver_flush_buffer(struct tty_struct *tty) +{ + if (tty->ops->flush_buffer) + tty->ops->flush_buffer(tty); +} + +EXPORT_SYMBOL(tty_driver_flush_buffer); + +void tty_throttle(struct tty_struct *tty) +{ + /* check TTY_THROTTLED first so it indicates our state */ + if (!test_and_set_bit(TTY_THROTTLED, &tty->flags) && + tty->ops->throttle) + tty->ops->throttle(tty); +} +EXPORT_SYMBOL(tty_throttle); + +void tty_unthrottle(struct tty_struct *tty) +{ + if (test_and_clear_bit(TTY_THROTTLED, &tty->flags) && + tty->ops->unthrottle) + tty->ops->unthrottle(tty); +} +EXPORT_SYMBOL(tty_unthrottle); + /** * tty_wait_until_sent - wait for I/O to finish * @tty: tty we are waiting for @@ -57,15 +102,13 @@ void tty_wait_until_sent(struct tty_struct *tty, long timeout) printk(KERN_DEBUG "%s wait until sent...\n", tty_name(tty, buf)); #endif - if (!tty->driver->chars_in_buffer) - return; if (!timeout) timeout = MAX_SCHEDULE_TIMEOUT; if (wait_event_interruptible_timeout(tty->write_wait, - !tty->driver->chars_in_buffer(tty), timeout) < 0) - return; - if (tty->driver->wait_until_sent) - tty->driver->wait_until_sent(tty, timeout); + !tty_chars_in_buffer(tty), timeout) >= 0) { + if (tty->ops->wait_until_sent) + tty->ops->wait_until_sent(tty, timeout); + } } EXPORT_SYMBOL(tty_wait_until_sent); @@ -393,8 +436,9 @@ EXPORT_SYMBOL(tty_termios_hw_change); static void change_termios(struct tty_struct *tty, struct ktermios *new_termios) { int canon_change; - struct ktermios old_termios = *tty->termios; + struct ktermios old_termios; struct tty_ldisc *ld; + unsigned long flags; /* * Perform the actual termios internal changes under lock. @@ -404,7 +448,7 @@ static void change_termios(struct tty_struct *tty, struct ktermios *new_termios) /* FIXME: we need to decide on some locking/ordering semantics for the set_termios notification eventually */ mutex_lock(&tty->termios_mutex); - + old_termios = *tty->termios; *tty->termios = *new_termios; unset_locked_termios(tty->termios, &old_termios, tty->termios_locked); canon_change = (old_termios.c_lflag ^ tty->termios->c_lflag) & ICANON; @@ -429,17 +473,19 @@ static void change_termios(struct tty_struct *tty, struct ktermios *new_termios) STOP_CHAR(tty) == '\023' && START_CHAR(tty) == '\021'); if (old_flow != new_flow) { + spin_lock_irqsave(&tty->ctrl_lock, flags); tty->ctrl_status &= ~(TIOCPKT_DOSTOP | TIOCPKT_NOSTOP); if (new_flow) tty->ctrl_status |= TIOCPKT_DOSTOP; else tty->ctrl_status |= TIOCPKT_NOSTOP; + spin_unlock_irqrestore(&tty->ctrl_lock, flags); wake_up_interruptible(&tty->link->read_wait); } } - if (tty->driver->set_termios) - (*tty->driver->set_termios)(tty, &old_termios); + if (tty->ops->set_termios) + (*tty->ops->set_termios)(tty, &old_termios); else tty_termios_copy_hw(tty->termios, &old_termios); @@ -474,7 +520,9 @@ static int set_termios(struct tty_struct *tty, void __user *arg, int opt) if (retval) return retval; + mutex_lock(&tty->termios_mutex); memcpy(&tmp_termios, tty->termios, sizeof(struct ktermios)); + mutex_unlock(&tty->termios_mutex); if (opt & TERMIOS_TERMIO) { if (user_termio_to_kernel_termios(&tmp_termios, @@ -660,12 +708,14 @@ static int get_tchars(struct tty_struct *tty, struct tchars __user *tchars) { struct tchars tmp; + mutex_lock(&tty->termios_mutex); tmp.t_intrc = tty->termios->c_cc[VINTR]; tmp.t_quitc = tty->termios->c_cc[VQUIT]; tmp.t_startc = tty->termios->c_cc[VSTART]; tmp.t_stopc = tty->termios->c_cc[VSTOP]; tmp.t_eofc = tty->termios->c_cc[VEOF]; tmp.t_brkc = tty->termios->c_cc[VEOL2]; /* what is brkc anyway? */ + mutex_unlock(&tty->termios_mutex); return copy_to_user(tchars, &tmp, sizeof(tmp)) ? -EFAULT : 0; } @@ -675,12 +725,14 @@ static int set_tchars(struct tty_struct *tty, struct tchars __user *tchars) if (copy_from_user(&tmp, tchars, sizeof(tmp))) return -EFAULT; + mutex_lock(&tty->termios_mutex); tty->termios->c_cc[VINTR] = tmp.t_intrc; tty->termios->c_cc[VQUIT] = tmp.t_quitc; tty->termios->c_cc[VSTART] = tmp.t_startc; tty->termios->c_cc[VSTOP] = tmp.t_stopc; tty->termios->c_cc[VEOF] = tmp.t_eofc; tty->termios->c_cc[VEOL2] = tmp.t_brkc; /* what is brkc anyway? */ + mutex_unlock(&tty->termios_mutex); return 0; } #endif @@ -690,6 +742,7 @@ static int get_ltchars(struct tty_struct *tty, struct ltchars __user *ltchars) { struct ltchars tmp; + mutex_lock(&tty->termios_mutex); tmp.t_suspc = tty->termios->c_cc[VSUSP]; /* what is dsuspc anyway? */ tmp.t_dsuspc = tty->termios->c_cc[VSUSP]; @@ -698,6 +751,7 @@ static int get_ltchars(struct tty_struct *tty, struct ltchars __user *ltchars) tmp.t_flushc = tty->termios->c_cc[VEOL2]; tmp.t_werasc = tty->termios->c_cc[VWERASE]; tmp.t_lnextc = tty->termios->c_cc[VLNEXT]; + mutex_unlock(&tty->termios_mutex); return copy_to_user(ltchars, &tmp, sizeof(tmp)) ? -EFAULT : 0; } @@ -708,6 +762,7 @@ static int set_ltchars(struct tty_struct *tty, struct ltchars __user *ltchars) if (copy_from_user(&tmp, ltchars, sizeof(tmp))) return -EFAULT; + mutex_lock(&tty->termios_mutex); tty->termios->c_cc[VSUSP] = tmp.t_suspc; /* what is dsuspc anyway? */ tty->termios->c_cc[VEOL2] = tmp.t_dsuspc; @@ -716,6 +771,7 @@ static int set_ltchars(struct tty_struct *tty, struct ltchars __user *ltchars) tty->termios->c_cc[VEOL2] = tmp.t_flushc; tty->termios->c_cc[VWERASE] = tmp.t_werasc; tty->termios->c_cc[VLNEXT] = tmp.t_lnextc; + mutex_unlock(&tty->termios_mutex); return 0; } #endif @@ -732,8 +788,8 @@ static int send_prio_char(struct tty_struct *tty, char ch) { int was_stopped = tty->stopped; - if (tty->driver->send_xchar) { - tty->driver->send_xchar(tty, ch); + if (tty->ops->send_xchar) { + tty->ops->send_xchar(tty, ch); return 0; } @@ -742,7 +798,7 @@ static int send_prio_char(struct tty_struct *tty, char ch) if (was_stopped) start_tty(tty); - tty->driver->write(tty, &ch, 1); + tty->ops->write(tty, &ch, 1); if (was_stopped) stop_tty(tty); tty_write_unlock(tty); @@ -750,6 +806,33 @@ static int send_prio_char(struct tty_struct *tty, char ch) } /** + * tty_change_softcar - carrier change ioctl helper + * @tty: tty to update + * @arg: enable/disable CLOCAL + * + * Perform a change to the CLOCAL state and call into the driver + * layer to make it visible. All done with the termios mutex + */ + +static int tty_change_softcar(struct tty_struct *tty, int arg) +{ + int ret = 0; + int bit = arg ? CLOCAL : 0; + struct ktermios old; + + mutex_lock(&tty->termios_mutex); + old = *tty->termios; + tty->termios->c_cflag &= ~CLOCAL; + tty->termios->c_cflag |= bit; + if (tty->ops->set_termios) + tty->ops->set_termios(tty, &old); + if ((tty->termios->c_cflag & CLOCAL) != bit) + ret = -EINVAL; + mutex_unlock(&tty->termios_mutex); + return ret; +} + +/** * tty_mode_ioctl - mode related ioctls * @tty: tty for the ioctl * @file: file pointer for the tty @@ -859,12 +942,7 @@ int tty_mode_ioctl(struct tty_struct *tty, struct file *file, case TIOCSSOFTCAR: if (get_user(arg, (unsigned int __user *) arg)) return -EFAULT; - mutex_lock(&tty->termios_mutex); - tty->termios->c_cflag = - ((tty->termios->c_cflag & ~CLOCAL) | - (arg ? CLOCAL : 0)); - mutex_unlock(&tty->termios_mutex); - return 0; + return tty_change_softcar(tty, arg); default: return -ENOIOCTLCMD; } @@ -889,8 +967,7 @@ int tty_perform_flush(struct tty_struct *tty, unsigned long arg) ld->flush_buffer(tty); /* fall through */ case TCOFLUSH: - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + tty_driver_flush_buffer(tty); break; default: tty_ldisc_deref(ld); @@ -905,6 +982,7 @@ int n_tty_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { struct tty_struct *real_tty; + unsigned long flags; int retval; if (tty->driver->type == TTY_DRIVER_TYPE_PTY && @@ -946,9 +1024,7 @@ int n_tty_ioctl(struct tty_struct *tty, struct file *file, case TCFLSH: return tty_perform_flush(tty, arg); case TIOCOUTQ: - return put_user(tty->driver->chars_in_buffer ? - tty->driver->chars_in_buffer(tty) : 0, - (int __user *) arg); + return put_user(tty_chars_in_buffer(tty), (int __user *) arg); case TIOCINQ: retval = tty->read_cnt; if (L_ICANON(tty)) @@ -963,6 +1039,7 @@ int n_tty_ioctl(struct tty_struct *tty, struct file *file, return -ENOTTY; if (get_user(pktmode, (int __user *) arg)) return -EFAULT; + spin_lock_irqsave(&tty->ctrl_lock, flags); if (pktmode) { if (!tty->packet) { tty->packet = 1; @@ -970,6 +1047,7 @@ int n_tty_ioctl(struct tty_struct *tty, struct file *file, } } else tty->packet = 0; + spin_unlock_irqrestore(&tty->ctrl_lock, flags); return 0; } default: diff --git a/drivers/char/viocons.c b/drivers/char/viocons.c index 8de6b95aeb8..3d3e1c2b310 100644 --- a/drivers/char/viocons.c +++ b/drivers/char/viocons.c @@ -628,13 +628,13 @@ static int viotty_write(struct tty_struct *tty, const unsigned char *buf, /* * TTY put_char method */ -static void viotty_put_char(struct tty_struct *tty, unsigned char ch) +static int viotty_put_char(struct tty_struct *tty, unsigned char ch) { struct port_info *pi; pi = get_port_data(tty); if (pi == NULL) - return; + return 0; /* This will append '\r' as well if the char is '\n' */ if (viochar_is_console(pi)) @@ -642,6 +642,7 @@ static void viotty_put_char(struct tty_struct *tty, unsigned char ch) if (viopath_isactive(pi->lp)) internal_write(pi, &ch, 1); + return 1; } /* @@ -704,8 +705,11 @@ static int viotty_ioctl(struct tty_struct *tty, struct file *file, case KDSKBLED: return 0; } - - return n_tty_ioctl(tty, file, cmd, arg); + /* FIXME: WTF is this being called for ??? */ + lock_kernel(); + ret = n_tty_ioctl(tty, file, cmd, arg); + unlock_kernel(); + return ret; } /* diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c index db7a731e236..58aad63831f 100644 --- a/drivers/char/viotape.c +++ b/drivers/char/viotape.c @@ -249,6 +249,7 @@ static int proc_viotape_open(struct inode *inode, struct file *file) } static const struct file_operations proc_viotape_operations = { + .owner = THIS_MODULE, .open = proc_viotape_open, .read = seq_read, .llseek = seq_lseek, @@ -915,7 +916,6 @@ static struct vio_driver viotape_driver = { int __init viotap_init(void) { int ret; - struct proc_dir_entry *e; if (!firmware_has_feature(FW_FEATURE_ISERIES)) return -ENODEV; @@ -968,11 +968,8 @@ int __init viotap_init(void) if (ret) goto unreg_class; - e = create_proc_entry("iSeries/viotape", S_IFREG|S_IRUGO, NULL); - if (e) { - e->owner = THIS_MODULE; - e->proc_fops = &proc_viotape_operations; - } + proc_create("iSeries/viotape", S_IFREG|S_IRUGO, NULL, + &proc_viotape_operations); return 0; diff --git a/drivers/char/vt.c b/drivers/char/vt.c index df4c3ead9e2..e458b08139a 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -301,7 +301,7 @@ static void scrup(struct vc_data *vc, unsigned int t, unsigned int b, int nr) d = (unsigned short *)(vc->vc_origin + vc->vc_size_row * t); s = (unsigned short *)(vc->vc_origin + vc->vc_size_row * (t + nr)); scr_memmovew(d, s, (b - t - nr) * vc->vc_size_row); - scr_memsetw(d + (b - t - nr) * vc->vc_cols, vc->vc_video_erase_char, + scr_memsetw(d + (b - t - nr) * vc->vc_cols, vc->vc_scrl_erase_char, vc->vc_size_row * nr); } @@ -319,7 +319,7 @@ static void scrdown(struct vc_data *vc, unsigned int t, unsigned int b, int nr) s = (unsigned short *)(vc->vc_origin + vc->vc_size_row * t); step = vc->vc_cols * nr; scr_memmovew(s + step, s, (b - t - nr) * vc->vc_size_row); - scr_memsetw(s, vc->vc_video_erase_char, 2 * step); + scr_memsetw(s, vc->vc_scrl_erase_char, 2 * step); } static void do_update_region(struct vc_data *vc, unsigned long start, int count) @@ -400,7 +400,7 @@ static u8 build_attr(struct vc_data *vc, u8 _color, u8 _intensity, u8 _blink, * Bit 7 : blink */ { - u8 a = vc->vc_color; + u8 a = _color; if (!vc->vc_can_do_color) return _intensity | (_italic ? 2 : 0) | @@ -434,6 +434,7 @@ static void update_attr(struct vc_data *vc) vc->vc_blink, vc->vc_underline, vc->vc_reverse ^ vc->vc_decscnm, vc->vc_italic); vc->vc_video_erase_char = (build_attr(vc, vc->vc_color, 1, vc->vc_blink, 0, vc->vc_decscnm, 0) << 8) | ' '; + vc->vc_scrl_erase_char = (build_attr(vc, vc->vc_def_color, 1, false, false, false, false) << 8) | ' '; } /* Note: inverting the screen twice should revert to the original state */ @@ -908,15 +909,21 @@ int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines) if (vc->vc_tty) { struct winsize ws, *cws = &vc->vc_tty->winsize; + unsigned long flags; memset(&ws, 0, sizeof(ws)); ws.ws_row = vc->vc_rows; ws.ws_col = vc->vc_cols; ws.ws_ypixel = vc->vc_scan_lines; + + mutex_lock(&vc->vc_tty->termios_mutex); + spin_lock_irqsave(&vc->vc_tty->ctrl_lock, flags); if ((ws.ws_row != cws->ws_row || ws.ws_col != cws->ws_col) && vc->vc_tty->pgrp) kill_pgrp(vc->vc_tty->pgrp, SIGWINCH, 1); + spin_unlock_irqrestore(&vc->vc_tty->ctrl_lock, flags); *cws = ws; + mutex_unlock(&vc->vc_tty->termios_mutex); } if (CON_IS_VISIBLE(vc)) @@ -2540,6 +2547,9 @@ int tioclinux(struct tty_struct *tty, unsigned long arg) if (get_user(type, p)) return -EFAULT; ret = 0; + + lock_kernel(); + switch (type) { case TIOCL_SETSEL: @@ -2559,7 +2569,7 @@ int tioclinux(struct tty_struct *tty, unsigned long arg) ret = sel_loadlut(p); break; case TIOCL_GETSHIFTSTATE: - + /* * Make it possible to react to Shift+Mousebutton. * Note that 'shift_state' is an undocumented @@ -2614,6 +2624,7 @@ int tioclinux(struct tty_struct *tty, unsigned long arg) ret = -EINVAL; break; } + unlock_kernel(); return ret; } @@ -2631,11 +2642,11 @@ static int con_write(struct tty_struct *tty, const unsigned char *buf, int count return retval; } -static void con_put_char(struct tty_struct *tty, unsigned char ch) +static int con_put_char(struct tty_struct *tty, unsigned char ch) { if (in_interrupt()) - return; /* n_r3964 calls put_char() from interrupt context */ - do_con_write(tty, &ch, 1); + return 0; /* n_r3964 calls put_char() from interrupt context */ + return do_con_write(tty, &ch, 1); } static int con_write_room(struct tty_struct *tty) @@ -3828,7 +3839,7 @@ static int con_font_get(struct vc_data *vc, struct console_font_op *op) goto out; c = (font.width+7)/8 * 32 * font.charcount; - + if (op->data && font.charcount > op->charcount) rc = -ENOSPC; if (!(op->flags & KD_FONT_FLAG_OLD)) { @@ -3993,6 +4004,7 @@ u16 screen_glyph(struct vc_data *vc, int offset) c |= 0x100; return c; } +EXPORT_SYMBOL_GPL(screen_glyph); /* used by vcs - note the word offset */ unsigned short *screen_pos(struct vc_data *vc, int w_offset, int viewed) diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c index e6f89e8b925..3211afd9d57 100644 --- a/drivers/char/vt_ioctl.c +++ b/drivers/char/vt_ioctl.c @@ -373,11 +373,17 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, unsigned char ucval; void __user *up = (void __user *)arg; int i, perm; - + int ret = 0; + console = vc->vc_num; - if (!vc_cons_allocated(console)) /* impossible? */ - return -ENOIOCTLCMD; + lock_kernel(); + + if (!vc_cons_allocated(console)) { /* impossible? */ + ret = -ENOIOCTLCMD; + goto out; + } + /* * To have permissions to do most of the vt ioctls, we either have @@ -391,15 +397,15 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, switch (cmd) { case KIOCSOUND: if (!perm) - return -EPERM; + goto eperm; if (arg) arg = CLOCK_TICK_RATE / arg; kd_mksound(arg, 0); - return 0; + break; case KDMKTONE: if (!perm) - return -EPERM; + goto eperm; { unsigned int ticks, count; @@ -412,7 +418,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, if (count) count = CLOCK_TICK_RATE / count; kd_mksound(count, ticks); - return 0; + break; } case KDGKBTYPE: @@ -435,14 +441,18 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, * KDADDIO and KDDELIO may be able to add ports beyond what * we reject here, but to be safe... */ - if (arg < GPFIRST || arg > GPLAST) - return -EINVAL; - return sys_ioperm(arg, 1, (cmd == KDADDIO)) ? -ENXIO : 0; + if (arg < GPFIRST || arg > GPLAST) { + ret = -EINVAL; + break; + } + ret = sys_ioperm(arg, 1, (cmd == KDADDIO)) ? -ENXIO : 0; + break; case KDENABIO: case KDDISABIO: - return sys_ioperm(GPFIRST, GPNUM, + ret = sys_ioperm(GPFIRST, GPNUM, (cmd == KDENABIO)) ? -ENXIO : 0; + break; #endif /* Linux m68k/i386 interface for setting the keyboard delay/repeat rate */ @@ -450,19 +460,20 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, case KDKBDREP: { struct kbd_repeat kbrep; - int err; if (!capable(CAP_SYS_TTY_CONFIG)) - return -EPERM; + goto eperm; - if (copy_from_user(&kbrep, up, sizeof(struct kbd_repeat))) - return -EFAULT; - err = kbd_rate(&kbrep); - if (err) - return err; + if (copy_from_user(&kbrep, up, sizeof(struct kbd_repeat))) { + ret = -EFAULT; + break; + } + ret = kbd_rate(&kbrep); + if (ret) + break; if (copy_to_user(up, &kbrep, sizeof(struct kbd_repeat))) - return -EFAULT; - return 0; + ret = -EFAULT; + break; } case KDSETMODE: @@ -475,7 +486,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, * need to restore their engine state. --BenH */ if (!perm) - return -EPERM; + goto eperm; switch (arg) { case KD_GRAPHICS: break; @@ -485,13 +496,14 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, case KD_TEXT: break; default: - return -EINVAL; + ret = -EINVAL; + goto out; } if (vc->vc_mode == (unsigned char) arg) - return 0; + break; vc->vc_mode = (unsigned char) arg; if (console != fg_console) - return 0; + break; /* * explicitly blank/unblank the screen if switching modes */ @@ -501,7 +513,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, else do_blank_screen(1); release_console_sem(); - return 0; + break; case KDGETMODE: ucval = vc->vc_mode; @@ -513,11 +525,12 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, * these work like a combination of mmap and KDENABIO. * this could be easily finished. */ - return -EINVAL; + ret = -EINVAL; + break; case KDSKBMODE: if (!perm) - return -EPERM; + goto eperm; switch(arg) { case K_RAW: kbd->kbdmode = VC_RAW; @@ -534,10 +547,11 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, compute_shiftstate(); break; default: - return -EINVAL; + ret = -EINVAL; + goto out; } tty_ldisc_flush(tty); - return 0; + break; case KDGKBMODE: ucval = ((kbd->kbdmode == VC_RAW) ? K_RAW : @@ -557,28 +571,32 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, set_vc_kbd_mode(kbd, VC_META); break; default: - return -EINVAL; + ret = -EINVAL; } - return 0; + break; case KDGKBMETA: ucval = (vc_kbd_mode(kbd, VC_META) ? K_ESCPREFIX : K_METABIT); setint: - return put_user(ucval, (int __user *)arg); + ret = put_user(ucval, (int __user *)arg); + break; case KDGETKEYCODE: case KDSETKEYCODE: if(!capable(CAP_SYS_TTY_CONFIG)) - perm=0; - return do_kbkeycode_ioctl(cmd, up, perm); + perm = 0; + ret = do_kbkeycode_ioctl(cmd, up, perm); + break; case KDGKBENT: case KDSKBENT: - return do_kdsk_ioctl(cmd, up, perm, kbd); + ret = do_kdsk_ioctl(cmd, up, perm, kbd); + break; case KDGKBSENT: case KDSKBSENT: - return do_kdgkb_ioctl(cmd, up, perm); + ret = do_kdgkb_ioctl(cmd, up, perm); + break; case KDGKBDIACR: { @@ -586,26 +604,31 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, struct kbdiacr diacr; int i; - if (put_user(accent_table_size, &a->kb_cnt)) - return -EFAULT; + if (put_user(accent_table_size, &a->kb_cnt)) { + ret = -EFAULT; + break; + } for (i = 0; i < accent_table_size; i++) { diacr.diacr = conv_uni_to_8bit(accent_table[i].diacr); diacr.base = conv_uni_to_8bit(accent_table[i].base); diacr.result = conv_uni_to_8bit(accent_table[i].result); - if (copy_to_user(a->kbdiacr + i, &diacr, sizeof(struct kbdiacr))) - return -EFAULT; + if (copy_to_user(a->kbdiacr + i, &diacr, sizeof(struct kbdiacr))) { + ret = -EFAULT; + break; + } } - return 0; + break; } case KDGKBDIACRUC: { struct kbdiacrsuc __user *a = up; if (put_user(accent_table_size, &a->kb_cnt)) - return -EFAULT; - if (copy_to_user(a->kbdiacruc, accent_table, accent_table_size*sizeof(struct kbdiacruc))) - return -EFAULT; - return 0; + ret = -EFAULT; + else if (copy_to_user(a->kbdiacruc, accent_table, + accent_table_size*sizeof(struct kbdiacruc))) + ret = -EFAULT; + break; } case KDSKBDIACR: @@ -616,20 +639,26 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, int i; if (!perm) - return -EPERM; - if (get_user(ct,&a->kb_cnt)) - return -EFAULT; - if (ct >= MAX_DIACR) - return -EINVAL; + goto eperm; + if (get_user(ct,&a->kb_cnt)) { + ret = -EFAULT; + break; + } + if (ct >= MAX_DIACR) { + ret = -EINVAL; + break; + } accent_table_size = ct; for (i = 0; i < ct; i++) { - if (copy_from_user(&diacr, a->kbdiacr + i, sizeof(struct kbdiacr))) - return -EFAULT; + if (copy_from_user(&diacr, a->kbdiacr + i, sizeof(struct kbdiacr))) { + ret = -EFAULT; + break; + } accent_table[i].diacr = conv_8bit_to_uni(diacr.diacr); accent_table[i].base = conv_8bit_to_uni(diacr.base); accent_table[i].result = conv_8bit_to_uni(diacr.result); } - return 0; + break; } case KDSKBDIACRUC: @@ -638,15 +667,19 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, unsigned int ct; if (!perm) - return -EPERM; - if (get_user(ct,&a->kb_cnt)) - return -EFAULT; - if (ct >= MAX_DIACR) - return -EINVAL; + goto eperm; + if (get_user(ct,&a->kb_cnt)) { + ret = -EFAULT; + break; + } + if (ct >= MAX_DIACR) { + ret = -EINVAL; + break; + } accent_table_size = ct; if (copy_from_user(accent_table, a->kbdiacruc, ct*sizeof(struct kbdiacruc))) - return -EFAULT; - return 0; + ret = -EFAULT; + break; } /* the ioctls below read/set the flags usually shown in the leds */ @@ -657,26 +690,29 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, case KDSKBLED: if (!perm) - return -EPERM; - if (arg & ~0x77) - return -EINVAL; + goto eperm; + if (arg & ~0x77) { + ret = -EINVAL; + break; + } kbd->ledflagstate = (arg & 7); kbd->default_ledflagstate = ((arg >> 4) & 7); set_leds(); - return 0; + break; /* the ioctls below only set the lights, not the functions */ /* for those, see KDGKBLED and KDSKBLED above */ case KDGETLED: ucval = getledstate(); setchar: - return put_user(ucval, (char __user *)arg); + ret = put_user(ucval, (char __user *)arg); + break; case KDSETLED: if (!perm) - return -EPERM; + goto eperm; setledstate(kbd, arg); - return 0; + break; /* * A process can indicate its willingness to accept signals @@ -688,16 +724,17 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, case KDSIGACCEPT: { if (!perm || !capable(CAP_KILL)) - return -EPERM; + goto eperm; if (!valid_signal(arg) || arg < 1 || arg == SIGKILL) - return -EINVAL; - - spin_lock_irq(&vt_spawn_con.lock); - put_pid(vt_spawn_con.pid); - vt_spawn_con.pid = get_pid(task_pid(current)); - vt_spawn_con.sig = arg; - spin_unlock_irq(&vt_spawn_con.lock); - return 0; + ret = -EINVAL; + else { + spin_lock_irq(&vt_spawn_con.lock); + put_pid(vt_spawn_con.pid); + vt_spawn_con.pid = get_pid(task_pid(current)); + vt_spawn_con.sig = arg; + spin_unlock_irq(&vt_spawn_con.lock); + } + break; } case VT_SETMODE: @@ -705,11 +742,15 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, struct vt_mode tmp; if (!perm) - return -EPERM; - if (copy_from_user(&tmp, up, sizeof(struct vt_mode))) - return -EFAULT; - if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS) - return -EINVAL; + goto eperm; + if (copy_from_user(&tmp, up, sizeof(struct vt_mode))) { + ret = -EFAULT; + goto out; + } + if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS) { + ret = -EINVAL; + goto out; + } acquire_console_sem(); vc->vt_mode = tmp; /* the frsig is ignored, so we set it to 0 */ @@ -719,7 +760,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, /* no switch is required -- saw@shade.msu.ru */ vc->vt_newvt = -1; release_console_sem(); - return 0; + break; } case VT_GETMODE: @@ -732,7 +773,9 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, release_console_sem(); rc = copy_to_user(up, &tmp, sizeof(struct vt_mode)); - return rc ? -EFAULT : 0; + if (rc) + ret = -EFAULT; + break; } /* @@ -746,12 +789,16 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, unsigned short state, mask; if (put_user(fg_console + 1, &vtstat->v_active)) - return -EFAULT; - state = 1; /* /dev/tty0 is always open */ - for (i = 0, mask = 2; i < MAX_NR_CONSOLES && mask; ++i, mask <<= 1) - if (VT_IS_IN_USE(i)) - state |= mask; - return put_user(state, &vtstat->v_state); + ret = -EFAULT; + else { + state = 1; /* /dev/tty0 is always open */ + for (i = 0, mask = 2; i < MAX_NR_CONSOLES && mask; + ++i, mask <<= 1) + if (VT_IS_IN_USE(i)) + state |= mask; + ret = put_user(state, &vtstat->v_state); + } + break; } /* @@ -771,27 +818,31 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, */ case VT_ACTIVATE: if (!perm) - return -EPERM; + goto eperm; if (arg == 0 || arg > MAX_NR_CONSOLES) - return -ENXIO; - arg--; - acquire_console_sem(); - i = vc_allocate(arg); - release_console_sem(); - if (i) - return i; - set_console(arg); - return 0; + ret = -ENXIO; + else { + arg--; + acquire_console_sem(); + ret = vc_allocate(arg); + release_console_sem(); + if (ret) + break; + set_console(arg); + } + break; /* * wait until the specified VT has been activated */ case VT_WAITACTIVE: if (!perm) - return -EPERM; + goto eperm; if (arg == 0 || arg > MAX_NR_CONSOLES) - return -ENXIO; - return vt_waitactive(arg-1); + ret = -ENXIO; + else + ret = vt_waitactive(arg - 1); + break; /* * If a vt is under process control, the kernel will not switch to it @@ -805,10 +856,12 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, */ case VT_RELDISP: if (!perm) - return -EPERM; - if (vc->vt_mode.mode != VT_PROCESS) - return -EINVAL; + goto eperm; + if (vc->vt_mode.mode != VT_PROCESS) { + ret = -EINVAL; + break; + } /* * Switching-from response */ @@ -829,10 +882,10 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, int newvt; newvt = vc->vt_newvt; vc->vt_newvt = -1; - i = vc_allocate(newvt); - if (i) { + ret = vc_allocate(newvt); + if (ret) { release_console_sem(); - return i; + break; } /* * When we actually do the console switch, @@ -841,31 +894,27 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, */ complete_change_console(vc_cons[newvt].d); } - } - - /* - * Switched-to response - */ - else - { + } else { + /* + * Switched-to response + */ /* * If it's just an ACK, ignore it */ - if (arg != VT_ACKACQ) { - release_console_sem(); - return -EINVAL; - } + if (arg != VT_ACKACQ) + ret = -EINVAL; } release_console_sem(); - - return 0; + break; /* * Disallocate memory associated to VT (but leave VT1) */ case VT_DISALLOCATE: - if (arg > MAX_NR_CONSOLES) - return -ENXIO; + if (arg > MAX_NR_CONSOLES) { + ret = -ENXIO; + break; + } if (arg == 0) { /* deallocate all unused consoles, but leave 0 */ acquire_console_sem(); @@ -877,14 +926,14 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, /* deallocate a single console, if possible */ arg--; if (VT_BUSY(arg)) - return -EBUSY; - if (arg) { /* leave 0 */ + ret = -EBUSY; + else if (arg) { /* leave 0 */ acquire_console_sem(); vc_deallocate(arg); release_console_sem(); } } - return 0; + break; case VT_RESIZE: { @@ -893,21 +942,21 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, ushort ll,cc; if (!perm) - return -EPERM; + goto eperm; if (get_user(ll, &vtsizes->v_rows) || get_user(cc, &vtsizes->v_cols)) - return -EFAULT; - - for (i = 0; i < MAX_NR_CONSOLES; i++) { - vc = vc_cons[i].d; + ret = -EFAULT; + else { + for (i = 0; i < MAX_NR_CONSOLES; i++) { + vc = vc_cons[i].d; - if (vc) { - vc->vc_resize_user = 1; - vc_lock_resize(vc_cons[i].d, cc, ll); + if (vc) { + vc->vc_resize_user = 1; + vc_lock_resize(vc_cons[i].d, cc, ll); + } } } - - return 0; + break; } case VT_RESIZEX: @@ -915,10 +964,13 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, struct vt_consize __user *vtconsize = up; ushort ll,cc,vlin,clin,vcol,ccol; if (!perm) - return -EPERM; + goto eperm; if (!access_ok(VERIFY_READ, vtconsize, - sizeof(struct vt_consize))) - return -EFAULT; + sizeof(struct vt_consize))) { + ret = -EFAULT; + break; + } + /* FIXME: Should check the copies properly */ __get_user(ll, &vtconsize->v_rows); __get_user(cc, &vtconsize->v_cols); __get_user(vlin, &vtconsize->v_vlin); @@ -928,21 +980,28 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, vlin = vlin ? vlin : vc->vc_scan_lines; if (clin) { if (ll) { - if (ll != vlin/clin) - return -EINVAL; /* Parameters don't add up */ + if (ll != vlin/clin) { + /* Parameters don't add up */ + ret = -EINVAL; + break; + } } else ll = vlin/clin; } if (vcol && ccol) { if (cc) { - if (cc != vcol/ccol) - return -EINVAL; + if (cc != vcol/ccol) { + ret = -EINVAL; + break; + } } else cc = vcol/ccol; } - if (clin > 32) - return -EINVAL; + if (clin > 32) { + ret = -EINVAL; + break; + } for (i = 0; i < MAX_NR_CONSOLES; i++) { if (!vc_cons[i].d) @@ -956,19 +1015,20 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, vc_resize(vc_cons[i].d, cc, ll); release_console_sem(); } - return 0; + break; } case PIO_FONT: { if (!perm) - return -EPERM; + goto eperm; op.op = KD_FONT_OP_SET; op.flags = KD_FONT_FLAG_OLD | KD_FONT_FLAG_DONT_RECALC; /* Compatibility */ op.width = 8; op.height = 0; op.charcount = 256; op.data = up; - return con_font_op(vc_cons[fg_console].d, &op); + ret = con_font_op(vc_cons[fg_console].d, &op); + break; } case GIO_FONT: { @@ -978,100 +1038,124 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, op.height = 32; op.charcount = 256; op.data = up; - return con_font_op(vc_cons[fg_console].d, &op); + ret = con_font_op(vc_cons[fg_console].d, &op); + break; } case PIO_CMAP: if (!perm) - return -EPERM; - return con_set_cmap(up); + ret = -EPERM; + else + ret = con_set_cmap(up); + break; case GIO_CMAP: - return con_get_cmap(up); + ret = con_get_cmap(up); + break; case PIO_FONTX: case GIO_FONTX: - return do_fontx_ioctl(cmd, up, perm, &op); + ret = do_fontx_ioctl(cmd, up, perm, &op); + break; case PIO_FONTRESET: { if (!perm) - return -EPERM; + goto eperm; #ifdef BROKEN_GRAPHICS_PROGRAMS /* With BROKEN_GRAPHICS_PROGRAMS defined, the default font is not saved. */ - return -ENOSYS; + ret = -ENOSYS; + break; #else { op.op = KD_FONT_OP_SET_DEFAULT; op.data = NULL; - i = con_font_op(vc_cons[fg_console].d, &op); - if (i) - return i; + ret = con_font_op(vc_cons[fg_console].d, &op); + if (ret) + break; con_set_default_unimap(vc_cons[fg_console].d); - return 0; + break; } #endif } case KDFONTOP: { - if (copy_from_user(&op, up, sizeof(op))) - return -EFAULT; + if (copy_from_user(&op, up, sizeof(op))) { + ret = -EFAULT; + break; + } if (!perm && op.op != KD_FONT_OP_GET) - return -EPERM; - i = con_font_op(vc, &op); - if (i) return i; + goto eperm; + ret = con_font_op(vc, &op); + if (ret) + break; if (copy_to_user(up, &op, sizeof(op))) - return -EFAULT; - return 0; + ret = -EFAULT; + break; } case PIO_SCRNMAP: if (!perm) - return -EPERM; - return con_set_trans_old(up); + ret = -EPERM; + else + ret = con_set_trans_old(up); + break; case GIO_SCRNMAP: - return con_get_trans_old(up); + ret = con_get_trans_old(up); + break; case PIO_UNISCRNMAP: if (!perm) - return -EPERM; - return con_set_trans_new(up); + ret = -EPERM; + else + ret = con_set_trans_new(up); + break; case GIO_UNISCRNMAP: - return con_get_trans_new(up); + ret = con_get_trans_new(up); + break; case PIO_UNIMAPCLR: { struct unimapinit ui; if (!perm) - return -EPERM; - i = copy_from_user(&ui, up, sizeof(struct unimapinit)); - if (i) return -EFAULT; - con_clear_unimap(vc, &ui); - return 0; + goto eperm; + ret = copy_from_user(&ui, up, sizeof(struct unimapinit)); + if (!ret) + con_clear_unimap(vc, &ui); + break; } case PIO_UNIMAP: case GIO_UNIMAP: - return do_unimap_ioctl(cmd, up, perm, vc); + ret = do_unimap_ioctl(cmd, up, perm, vc); + break; case VT_LOCKSWITCH: if (!capable(CAP_SYS_TTY_CONFIG)) - return -EPERM; + goto eperm; vt_dont_switch = 1; - return 0; + break; case VT_UNLOCKSWITCH: if (!capable(CAP_SYS_TTY_CONFIG)) - return -EPERM; + goto eperm; vt_dont_switch = 0; - return 0; + break; case VT_GETHIFONTMASK: - return put_user(vc->vc_hi_font_mask, (unsigned short __user *)arg); + ret = put_user(vc->vc_hi_font_mask, + (unsigned short __user *)arg); + break; default: - return -ENOIOCTLCMD; + ret = -ENOIOCTLCMD; } +out: + unlock_kernel(); + return ret; +eperm: + ret = -EPERM; + goto out; } /* |