diff options
Diffstat (limited to 'drivers/char/serial167.c')
| -rw-r--r-- | drivers/char/serial167.c | 2490 |
1 files changed, 0 insertions, 2490 deletions
diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c deleted file mode 100644 index 748c3b0ecd8..00000000000 --- a/drivers/char/serial167.c +++ /dev/null @@ -1,2490 +0,0 @@ -/* - * linux/drivers/char/serial167.c - * - * Driver for MVME166/7 board serial ports, which are via a CD2401. - * Based very much on cyclades.c. - * - * MVME166/7 work by Richard Hirst [richard@sleepie.demon.co.uk] - * - * ============================================================== - * - * static char rcsid[] = - * "$Revision: 1.36.1.4 $$Date: 1995/03/29 06:14:14 $"; - * - * linux/kernel/cyclades.c - * - * Maintained by Marcio Saito (cyclades@netcom.com) and - * Randolph Bentson (bentson@grieg.seaslug.org) - * - * Much of the design and some of the code came from serial.c - * which was copyright (C) 1991, 1992 Linus Torvalds. It was - * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, - * and then fixed as suggested by Michael K. Johnson 12/12/92. - * - * This version does not support shared irq's. - * - * $Log: cyclades.c,v $ - * Revision 1.36.1.4 1995/03/29 06:14:14 bentson - * disambiguate between Cyclom-16Y and Cyclom-32Ye; - * - * Changes: - * - * 200 lines of changes record removed - RGH 11-10-95, starting work on - * converting this to drive serial ports on mvme166 (cd2401). - * - * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 2000/08/25 - * - get rid of verify_area - * - use get_user to access memory from userspace in set_threshold, - * set_default_threshold and set_timeout - * - don't use the panic function in serial167_init - * - do resource release on failure on serial167_init - * - include missing restore_flags in mvme167_serial_console_setup - * - * Kars de Jong <jongk@linux-m68k.org> - 2004/09/06 - * - replace bottom half handler with task queue handler - */ - -#include <linux/errno.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/timer.h> -#include <linux/tty.h> -#include <linux/interrupt.h> -#include <linux/serial.h> -#include <linux/serialP.h> -#include <linux/string.h> -#include <linux/fcntl.h> -#include <linux/ptrace.h> -#include <linux/serial167.h> -#include <linux/delay.h> -#include <linux/major.h> -#include <linux/mm.h> -#include <linux/console.h> -#include <linux/module.h> -#include <linux/bitops.h> -#include <linux/tty_flip.h> -#include <linux/gfp.h> - -#include <asm/system.h> -#include <asm/io.h> -#include <asm/mvme16xhw.h> -#include <asm/bootinfo.h> -#include <asm/setup.h> - -#include <linux/types.h> -#include <linux/kernel.h> - -#include <asm/uaccess.h> -#include <linux/init.h> - -#define SERIAL_PARANOIA_CHECK -#undef SERIAL_DEBUG_OPEN -#undef SERIAL_DEBUG_THROTTLE -#undef SERIAL_DEBUG_OTHER -#undef SERIAL_DEBUG_IO -#undef SERIAL_DEBUG_COUNT -#undef SERIAL_DEBUG_DTR -#undef CYCLOM_16Y_HACK -#define CYCLOM_ENABLE_MONITORING - -#define WAKEUP_CHARS 256 - -#define STD_COM_FLAGS (0) - -static struct tty_driver *cy_serial_driver; -extern int serial_console; -static struct cyclades_port *serial_console_info = NULL; -static unsigned int serial_console_cflag = 0; -u_char initial_console_speed; - -/* Base address of cd2401 chip on mvme166/7 */ - -#define BASE_ADDR (0xfff45000) -#define pcc2chip ((volatile u_char *)0xfff42000) -#define PccSCCMICR 0x1d -#define PccSCCTICR 0x1e -#define PccSCCRICR 0x1f -#define PccTPIACKR 0x25 -#define PccRPIACKR 0x27 -#define PccIMLR 0x3f - -/* This is the per-port data structure */ -struct cyclades_port cy_port[] = { - /* CARD# */ - {-1}, /* ttyS0 */ - {-1}, /* ttyS1 */ - {-1}, /* ttyS2 */ - {-1}, /* ttyS3 */ -}; - -#define NR_PORTS ARRAY_SIZE(cy_port) - -/* - * This is used to look up the divisor speeds and the timeouts - * We're normally limited to 15 distinct baud rates. The extra - * are accessed via settings in info->flags. - * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, - * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, - * HI VHI - */ -static int baud_table[] = { - 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, - 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, - 0 -}; - -#if 0 -static char baud_co[] = { /* 25 MHz clock option table */ - /* value => 00 01 02 03 04 */ - /* divide by 8 32 128 512 2048 */ - 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, - 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 -}; - -static char baud_bpr[] = { /* 25 MHz baud rate period table */ - 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, - 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 -}; -#endif - -/* I think 166 brd clocks 2401 at 20MHz.... */ - -/* These values are written directly to tcor, and >> 5 for writing to rcor */ -static u_char baud_co[] = { /* 20 MHz clock option table */ - 0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x60, 0x60, 0x40, - 0x40, 0x40, 0x20, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 -}; - -/* These values written directly to tbpr/rbpr */ -static u_char baud_bpr[] = { /* 20 MHz baud rate period table */ - 0x00, 0xc0, 0x80, 0x58, 0x6c, 0x40, 0xc0, 0x81, 0x40, 0x81, - 0x57, 0x40, 0x81, 0x40, 0x81, 0x40, 0x2b, 0x20, 0x15, 0x10 -}; - -static u_char baud_cor4[] = { /* receive threshold */ - 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, - 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07 -}; - -static void shutdown(struct cyclades_port *); -static int startup(struct cyclades_port *); -static void cy_throttle(struct tty_struct *); -static void cy_unthrottle(struct tty_struct *); -static void config_setup(struct cyclades_port *); -#ifdef CYCLOM_SHOW_STATUS -static void show_status(int); -#endif - -/* - * I have my own version of udelay(), as it is needed when initialising - * the chip, before the delay loop has been calibrated. Should probably - * reference one of the vmechip2 or pccchip2 counter for an accurate - * delay, but this wild guess will do for now. - */ - -void my_udelay(long us) -{ - u_char x; - volatile u_char *p = &x; - int i; - - while (us--) - for (i = 100; i; i--) - x |= *p; -} - -static inline int serial_paranoia_check(struct cyclades_port *info, char *name, - const char *routine) -{ -#ifdef SERIAL_PARANOIA_CHECK - if (!info) { - printk("Warning: null cyclades_port for (%s) in %s\n", name, - routine); - return 1; - } - - if (info < &cy_port[0] || info >= &cy_port[NR_PORTS]) { - printk("Warning: cyclades_port out of range for (%s) in %s\n", - name, routine); - return 1; - } - - if (info->magic != CYCLADES_MAGIC) { - printk("Warning: bad magic number for serial struct (%s) in " - "%s\n", name, routine); - return 1; - } -#endif - return 0; -} /* serial_paranoia_check */ - -#if 0 -/* The following diagnostic routines allow the driver to spew - information on the screen, even (especially!) during interrupts. - */ -void SP(char *data) -{ - unsigned long flags; - local_irq_save(flags); - printk(KERN_EMERG "%s", data); - local_irq_restore(flags); -} - -char scrn[2]; -void CP(char data) -{ - unsigned long flags; - local_irq_save(flags); - scrn[0] = data; - printk(KERN_EMERG "%c", scrn); - local_irq_restore(flags); -} /* CP */ - -void CP1(int data) -{ - (data < 10) ? CP(data + '0') : CP(data + 'A' - 10); -} /* CP1 */ -void CP2(int data) -{ - CP1((data >> 4) & 0x0f); - CP1(data & 0x0f); -} /* CP2 */ -void CP4(int data) -{ - CP2((data >> 8) & 0xff); - CP2(data & 0xff); -} /* CP4 */ -void CP8(long data) -{ - CP4((data >> 16) & 0xffff); - CP4(data & 0xffff); -} /* CP8 */ -#endif - -/* This routine waits up to 1000 micro-seconds for the previous - command to the Cirrus chip to complete and then issues the - new command. An error is returned if the previous command - didn't finish within the time limit. - */ -u_short write_cy_cmd(volatile u_char * base_addr, u_char cmd) -{ - unsigned long flags; - volatile int i; - - local_irq_save(flags); - /* Check to see that the previous command has completed */ - for (i = 0; i < 100; i++) { - if (base_addr[CyCCR] == 0) { - break; - } - my_udelay(10L); - } - /* if the CCR never cleared, the previous command - didn't finish within the "reasonable time" */ - if (i == 10) { - local_irq_restore(flags); - return (-1); - } - - /* Issue the new command */ - base_addr[CyCCR] = cmd; - local_irq_restore(flags); - return (0); -} /* write_cy_cmd */ - -/* cy_start and cy_stop provide software output flow control as a - function of XON/XOFF, software CTS, and other such stuff. */ - -static void cy_stop(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - unsigned long flags; - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_stop %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_stop")) - return; - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) (channel); /* index channel */ - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - local_irq_restore(flags); -} /* cy_stop */ - -static void cy_start(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - unsigned long flags; - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_start %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_start")) - return; - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) (channel); - base_addr[CyIER] |= CyTxMpty; - local_irq_restore(flags); -} /* cy_start */ - -/* The real interrupt service routines are called - whenever the card wants its hand held--chars - received, out buffer empty, modem change, etc. - */ -static irqreturn_t cd2401_rxerr_interrupt(int irq, void *dev_id) -{ - struct tty_struct *tty; - struct cyclades_port *info; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - unsigned char err, rfoc; - int channel; - char data; - - /* determine the channel and change to that context */ - channel = (u_short) (base_addr[CyLICR] >> 2); - info = &cy_port[channel]; - info->last_active = jiffies; - - if ((err = base_addr[CyRISR]) & CyTIMEOUT) { - /* This is a receive timeout interrupt, ignore it */ - base_addr[CyREOIR] = CyNOTRANS; - return IRQ_HANDLED; - } - - /* Read a byte of data if there is any - assume the error - * is associated with this character */ - - if ((rfoc = base_addr[CyRFOC]) != 0) - data = base_addr[CyRDR]; - else - data = 0; - - /* if there is nowhere to put the data, discard it */ - if (info->tty == 0) { - base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; - return IRQ_HANDLED; - } else { /* there is an open port for this data */ - tty = info->tty; - if (err & info->ignore_status_mask) { - base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; - return IRQ_HANDLED; - } - if (tty_buffer_request_room(tty, 1) != 0) { - if (err & info->read_status_mask) { - if (err & CyBREAK) { - tty_insert_flip_char(tty, data, - TTY_BREAK); - if (info->flags & ASYNC_SAK) { - do_SAK(tty); - } - } else if (err & CyFRAME) { - tty_insert_flip_char(tty, data, - TTY_FRAME); - } else if (err & CyPARITY) { - tty_insert_flip_char(tty, data, - TTY_PARITY); - } else if (err & CyOVERRUN) { - tty_insert_flip_char(tty, 0, - TTY_OVERRUN); - /* - If the flip buffer itself is - overflowing, we still lose - the next incoming character. - */ - if (tty_buffer_request_room(tty, 1) != - 0) { - tty_insert_flip_char(tty, data, - TTY_FRAME); - } - /* These two conditions may imply */ - /* a normal read should be done. */ - /* else if(data & CyTIMEOUT) */ - /* else if(data & CySPECHAR) */ - } else { - tty_insert_flip_char(tty, 0, - TTY_NORMAL); - } - } else { - tty_insert_flip_char(tty, data, TTY_NORMAL); - } - } else { - /* there was a software buffer overrun - and nothing could be done about it!!! */ - } - } - tty_schedule_flip(tty); - /* end of service */ - base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; - return IRQ_HANDLED; -} /* cy_rxerr_interrupt */ - -static irqreturn_t cd2401_modem_interrupt(int irq, void *dev_id) -{ - struct cyclades_port *info; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - int mdm_change; - int mdm_status; - - /* determine the channel and change to that context */ - channel = (u_short) (base_addr[CyLICR] >> 2); - info = &cy_port[channel]; - info->last_active = jiffies; - - mdm_change = base_addr[CyMISR]; - mdm_status = base_addr[CyMSVR1]; - - if (info->tty == 0) { /* nowhere to put the data, ignore it */ - ; - } else { - if ((mdm_change & CyDCD) - && (info->flags & ASYNC_CHECK_CD)) { - if (mdm_status & CyDCD) { -/* CP('!'); */ - wake_up_interruptible(&info->open_wait); - } else { -/* CP('@'); */ - tty_hangup(info->tty); - wake_up_interruptible(&info->open_wait); - info->flags &= ~ASYNC_NORMAL_ACTIVE; - } - } - if ((mdm_change & CyCTS) - && (info->flags & ASYNC_CTS_FLOW)) { - if (info->tty->stopped) { - if (mdm_status & CyCTS) { - /* !!! cy_start isn't used because... */ - info->tty->stopped = 0; - base_addr[CyIER] |= CyTxMpty; - tty_wakeup(info->tty); - } - } else { - if (!(mdm_status & CyCTS)) { - /* !!! cy_stop isn't used because... */ - info->tty->stopped = 1; - base_addr[CyIER] &= - ~(CyTxMpty | CyTxRdy); - } - } - } - if (mdm_status & CyDSR) { - } - } - base_addr[CyMEOIR] = 0; - return IRQ_HANDLED; -} /* cy_modem_interrupt */ - -static irqreturn_t cd2401_tx_interrupt(int irq, void *dev_id) -{ - struct cyclades_port *info; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - int char_count, saved_cnt; - int outch; - - /* determine the channel and change to that context */ - channel = (u_short) (base_addr[CyLICR] >> 2); - - /* validate the port number (as configured and open) */ - if ((channel < 0) || (NR_PORTS <= channel)) { - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - base_addr[CyTEOIR] = CyNOTRANS; - return IRQ_HANDLED; - } - info = &cy_port[channel]; - info->last_active = jiffies; - if (info->tty == 0) { - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - base_addr[CyTEOIR] = CyNOTRANS; - return IRQ_HANDLED; - } - - /* load the on-chip space available for outbound data */ - saved_cnt = char_count = base_addr[CyTFTC]; - - if (info->x_char) { /* send special char */ - outch = info->x_char; - base_addr[CyTDR] = outch; - char_count--; - info->x_char = 0; - } - - if (info->x_break) { - /* The Cirrus chip requires the "Embedded Transmit - Commands" of start break, delay, and end break - sequences to be sent. The duration of the - break is given in TICs, which runs at HZ - (typically 100) and the PPR runs at 200 Hz, - so the delay is duration * 200/HZ, and thus a - break can run from 1/100 sec to about 5/4 sec. - Need to check these values - RGH 141095. - */ - base_addr[CyTDR] = 0; /* start break */ - base_addr[CyTDR] = 0x81; - base_addr[CyTDR] = 0; /* delay a bit */ - base_addr[CyTDR] = 0x82; - base_addr[CyTDR] = info->x_break * 200 / HZ; - base_addr[CyTDR] = 0; /* terminate break */ - base_addr[CyTDR] = 0x83; - char_count -= 7; - info->x_break = 0; - } - - while (char_count > 0) { - if (!info->xmit_cnt) { - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - break; - } - if (info->xmit_buf == 0) { - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - break; - } - if (info->tty->stopped || info->tty->hw_stopped) { - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - break; - } - /* Because the Embedded Transmit Commands have been - enabled, we must check to see if the escape - character, NULL, is being sent. If it is, we - must ensure that there is room for it to be - doubled in the output stream. Therefore we - no longer advance the pointer when the character - is fetched, but rather wait until after the check - for a NULL output character. (This is necessary - because there may not be room for the two chars - needed to send a NULL. - */ - outch = info->xmit_buf[info->xmit_tail]; - if (outch) { - info->xmit_cnt--; - info->xmit_tail = (info->xmit_tail + 1) - & (PAGE_SIZE - 1); - base_addr[CyTDR] = outch; - char_count--; - } else { - if (char_count > 1) { - info->xmit_cnt--; - info->xmit_tail = (info->xmit_tail + 1) - & (PAGE_SIZE - 1); - base_addr[CyTDR] = outch; - base_addr[CyTDR] = 0; - char_count--; - char_count--; - } else { - break; - } - } - } - - if (info->xmit_cnt < WAKEUP_CHARS) - tty_wakeup(info->tty); - - base_addr[CyTEOIR] = (char_count != saved_cnt) ? 0 : CyNOTRANS; - return IRQ_HANDLED; -} /* cy_tx_interrupt */ - -static irqreturn_t cd2401_rx_interrupt(int irq, void *dev_id) -{ - struct tty_struct *tty; - struct cyclades_port *info; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - char data; - int char_count; - int save_cnt; - - /* determine the channel and change to that context */ - channel = (u_short) (base_addr[CyLICR] >> 2); - info = &cy_port[channel]; - info->last_active = jiffies; - save_cnt = char_count = base_addr[CyRFOC]; - - /* if there is nowhere to put the data, discard it */ - if (info->tty == 0) { - while (char_count--) { - data = base_addr[CyRDR]; - } - } else { /* there is an open port for this data */ - tty = info->tty; - /* load # characters available from the chip */ - -#ifdef CYCLOM_ENABLE_MONITORING - ++info->mon.int_count; - info->mon.char_count += char_count; - if (char_count > info->mon.char_max) - info->mon.char_max = char_count; - info->mon.char_last = char_count; -#endif - while (char_count--) { - data = base_addr[CyRDR]; - tty_insert_flip_char(tty, data, TTY_NORMAL); -#ifdef CYCLOM_16Y_HACK - udelay(10L); -#endif - } - tty_schedule_flip(tty); - } - /* end of service */ - base_addr[CyREOIR] = save_cnt ? 0 : CyNOTRANS; - return IRQ_HANDLED; -} /* cy_rx_interrupt */ - -/* This is called whenever a port becomes active; - interrupts are enabled and DTR & RTS are turned on. - */ -static int startup(struct cyclades_port *info) -{ - unsigned long flags; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - - if (info->flags & ASYNC_INITIALIZED) { - return 0; - } - - if (!info->type) { - if (info->tty) { - set_bit(TTY_IO_ERROR, &info->tty->flags); - } - return 0; - } - if (!info->xmit_buf) { - info->xmit_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL); - if (!info->xmit_buf) { - return -ENOMEM; - } - } - - config_setup(info); - - channel = info->line; - -#ifdef SERIAL_DEBUG_OPEN - printk("startup channel %d\n", channel); -#endif - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - write_cy_cmd(base_addr, CyENB_RCVR | CyENB_XMTR); - - base_addr[CyCAR] = (u_char) channel; /* !!! Is this needed? */ - base_addr[CyMSVR1] = CyRTS; -/* CP('S');CP('1'); */ - base_addr[CyMSVR2] = CyDTR; - -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: raising DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - - base_addr[CyIER] |= CyRxData; - info->flags |= ASYNC_INITIALIZED; - - if (info->tty) { - clear_bit(TTY_IO_ERROR, &info->tty->flags); - } - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - - local_irq_restore(flags); - -#ifdef SERIAL_DEBUG_OPEN - printk(" done\n"); -#endif - return 0; -} /* startup */ - -void start_xmit(struct cyclades_port *info) -{ - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - - channel = info->line; - local_irq_save(flags); - base_addr[CyCAR] = channel; - base_addr[CyIER] |= CyTxMpty; - local_irq_restore(flags); -} /* start_xmit */ - -/* - * This routine shuts down a serial port; interrupts are disabled, - * and DTR is dropped if the hangup on close termio flag is on. - */ -static void shutdown(struct cyclades_port *info) -{ - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - - if (!(info->flags & ASYNC_INITIALIZED)) { -/* CP('$'); */ - return; - } - - channel = info->line; - -#ifdef SERIAL_DEBUG_OPEN - printk("shutdown channel %d\n", channel); -#endif - - /* !!! REALLY MUST WAIT FOR LAST CHARACTER TO BE - SENT BEFORE DROPPING THE LINE !!! (Perhaps - set some flag that is read when XMTY happens.) - Other choices are to delay some fixed interval - or schedule some later processing. - */ - local_irq_save(flags); - if (info->xmit_buf) { - free_page((unsigned long)info->xmit_buf); - info->xmit_buf = NULL; - } - - base_addr[CyCAR] = (u_char) channel; - if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { - base_addr[CyMSVR1] = 0; -/* CP('C');CP('1'); */ - base_addr[CyMSVR2] = 0; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: dropping DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - } - write_cy_cmd(base_addr, CyDIS_RCVR); - /* it may be appropriate to clear _XMIT at - some later date (after testing)!!! */ - - if (info->tty) { - set_bit(TTY_IO_ERROR, &info->tty->flags); - } - info->flags &= ~ASYNC_INITIALIZED; - local_irq_restore(flags); - -#ifdef SERIAL_DEBUG_OPEN - printk(" done\n"); -#endif -} /* shutdown */ - -/* - * This routine finds or computes the various line characteristics. - */ -static void config_setup(struct cyclades_port *info) -{ - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - unsigned cflag; - int i; - unsigned char ti, need_init_chan = 0; - - if (!info->tty || !info->tty->termios) { - return; - } - if (info->line == -1) { - return; - } - cflag = info->tty->termios->c_cflag; - - /* baud rate */ - i = cflag & CBAUD; -#ifdef CBAUDEX -/* Starting with kernel 1.1.65, there is direct support for - higher baud rates. The following code supports those - changes. The conditional aspect allows this driver to be - used for earlier as well as later kernel versions. (The - mapping is slightly different from serial.c because there - is still the possibility of supporting 75 kbit/sec with - the Cyclades board.) - */ - if (i & CBAUDEX) { - if (i == B57600) - i = 16; - else if (i == B115200) - i = 18; -#ifdef B78600 - else if (i == B78600) - i = 17; -#endif - else - info->tty->termios->c_cflag &= ~CBAUDEX; - } -#endif - if (i == 15) { - if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - i += 1; - if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - i += 3; - } - /* Don't ever change the speed of the console port. It will - * run at the speed specified in bootinfo, or at 19.2K */ - /* Actually, it should run at whatever speed 166Bug was using */ - /* Note info->timeout isn't used at present */ - if (info != serial_console_info) { - info->tbpr = baud_bpr[i]; /* Tx BPR */ - info->tco = baud_co[i]; /* Tx CO */ - info->rbpr = baud_bpr[i]; /* Rx BPR */ - info->rco = baud_co[i] >> 5; /* Rx CO */ - if (baud_table[i] == 134) { - info->timeout = - (info->xmit_fifo_size * HZ * 30 / 269) + 2; - /* get it right for 134.5 baud */ - } else if (baud_table[i]) { - info->timeout = - (info->xmit_fifo_size * HZ * 15 / baud_table[i]) + - 2; - /* this needs to be propagated into the card info */ - } else { - info->timeout = 0; - } - } - /* By tradition (is it a standard?) a baud rate of zero - implies the line should be/has been closed. A bit - later in this routine such a test is performed. */ - - /* byte size and parity */ - info->cor7 = 0; - info->cor6 = 0; - info->cor5 = 0; - info->cor4 = (info->default_threshold ? info->default_threshold : baud_cor4[i]); /* receive threshold */ - /* Following two lines added 101295, RGH. */ - /* It is obviously wrong to access CyCORx, and not info->corx here, - * try and remember to fix it later! */ - channel = info->line; - base_addr[CyCAR] = (u_char) channel; - if (C_CLOCAL(info->tty)) { - if (base_addr[CyIER] & CyMdmCh) - base_addr[CyIER] &= ~CyMdmCh; /* without modem intr */ - /* ignore 1->0 modem transitions */ - if (base_addr[CyCOR4] & (CyDSR | CyCTS | CyDCD)) - base_addr[CyCOR4] &= ~(CyDSR | CyCTS | CyDCD); - /* ignore 0->1 modem transitions */ - if (base_addr[CyCOR5] & (CyDSR | CyCTS | CyDCD)) - base_addr[CyCOR5] &= ~(CyDSR | CyCTS | CyDCD); - } else { - if ((base_addr[CyIER] & CyMdmCh) != CyMdmCh) - base_addr[CyIER] |= CyMdmCh; /* with modem intr */ - /* act on 1->0 modem transitions */ - if ((base_addr[CyCOR4] & (CyDSR | CyCTS | CyDCD)) != - (CyDSR | CyCTS | CyDCD)) - base_addr[CyCOR4] |= CyDSR | CyCTS | CyDCD; - /* act on 0->1 modem transitions */ - if ((base_addr[CyCOR5] & (CyDSR | CyCTS | CyDCD)) != - (CyDSR | CyCTS | CyDCD)) - base_addr[CyCOR5] |= CyDSR | CyCTS | CyDCD; - } - info->cor3 = (cflag & CSTOPB) ? Cy_2_STOP : Cy_1_STOP; - info->cor2 = CyETC; - switch (cflag & CSIZE) { - case CS5: - info->cor1 = Cy_5_BITS; - break; - case CS6: - info->cor1 = Cy_6_BITS; - break; - case CS7: - info->cor1 = Cy_7_BITS; - break; - case CS8: - info->cor1 = Cy_8_BITS; - break; - } - if (cflag & PARENB) { - if (cflag & PARODD) { - info->cor1 |= CyPARITY_O; - } else { - info->cor1 |= CyPARITY_E; - } - } else { - info->cor1 |= CyPARITY_NONE; - } - - /* CTS flow control flag */ -#if 0 - /* Don't complcate matters for now! RGH 141095 */ - if (cflag & CRTSCTS) { - info->flags |= ASYNC_CTS_FLOW; - info->cor2 |= CyCtsAE; - } else { - info->flags &= ~ASYNC_CTS_FLOW; - info->cor2 &= ~CyCtsAE; - } -#endif - if (cflag & CLOCAL) - info->flags &= ~ASYNC_CHECK_CD; - else - info->flags |= ASYNC_CHECK_CD; - - /*********************************************** - The hardware option, CyRtsAO, presents RTS when - the chip has characters to send. Since most modems - use RTS as reverse (inbound) flow control, this - option is not used. If inbound flow control is - necessary, DTR can be programmed to provide the - appropriate signals for use with a non-standard - cable. Contact Marcio Saito for details. - ***********************************************/ - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - - /* CyCMR set once only in mvme167_init_serial() */ - if (base_addr[CyLICR] != channel << 2) - base_addr[CyLICR] = channel << 2; - if (base_addr[CyLIVR] != 0x5c) - base_addr[CyLIVR] = 0x5c; - - /* tx and rx baud rate */ - - if (base_addr[CyCOR1] != info->cor1) - need_init_chan = 1; - if (base_addr[CyTCOR] != info->tco) - base_addr[CyTCOR] = info->tco; - if (base_addr[CyTBPR] != info->tbpr) - base_addr[CyTBPR] = info->tbpr; - if (base_addr[CyRCOR] != info->rco) - base_addr[CyRCOR] = info->rco; - if (base_addr[CyRBPR] != info->rbpr) - base_addr[CyRBPR] = info->rbpr; - - /* set line characteristics according configuration */ - - if (base_addr[CySCHR1] != START_CHAR(info->tty)) - base_addr[CySCHR1] = START_CHAR(info->tty); - if (base_addr[CySCHR2] != STOP_CHAR(info->tty)) - base_addr[CySCHR2] = STOP_CHAR(info->tty); - if (base_addr[CySCRL] != START_CHAR(info->tty)) - base_addr[CySCRL] = START_CHAR(info->tty); - if (base_addr[CySCRH] != START_CHAR(info->tty)) - base_addr[CySCRH] = START_CHAR(info->tty); - if (base_addr[CyCOR1] != info->cor1) - base_addr[CyCOR1] = info->cor1; - if (base_addr[CyCOR2] != info->cor2) - base_addr[CyCOR2] = info->cor2; - if (base_addr[CyCOR3] != info->cor3) - base_addr[CyCOR3] = info->cor3; - if (base_addr[CyCOR4] != info->cor4) - base_addr[CyCOR4] = info->cor4; - if (base_addr[CyCOR5] != info->cor5) - base_addr[CyCOR5] = info->cor5; - if (base_addr[CyCOR6] != info->cor6) - base_addr[CyCOR6] = info->cor6; - if (base_addr[CyCOR7] != info->cor7) - base_addr[CyCOR7] = info->cor7; - - if (need_init_chan) - write_cy_cmd(base_addr, CyINIT_CHAN); - - base_addr[CyCAR] = (u_char) channel; /* !!! Is this needed? */ - - /* 2ms default rx timeout */ - ti = info->default_timeout ? info->default_timeout : 0x02; - if (base_addr[CyRTPRL] != ti) - base_addr[CyRTPRL] = ti; - if (base_addr[CyRTPRH] != 0) - base_addr[CyRTPRH] = 0; - - /* Set up RTS here also ????? RGH 141095 */ - if (i == 0) { /* baud rate is zero, turn off line */ - if ((base_addr[CyMSVR2] & CyDTR) == CyDTR) - base_addr[CyMSVR2] = 0; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: dropping DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - } else { - if ((base_addr[CyMSVR2] & CyDTR) != CyDTR) - base_addr[CyMSVR2] = CyDTR; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: raising DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - } - - if (info->tty) { - clear_bit(TTY_IO_ERROR, &info->tty->flags); - } - - local_irq_restore(flags); - -} /* config_setup */ - -static int cy_put_char(struct tty_struct *tty, unsigned char ch) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - -#ifdef SERIAL_DEBUG_IO - printk("cy_put_char %s(0x%02x)\n", tty->name, ch); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_put_char")) - return 0; - - if (!info->xmit_buf) - return 0; - - local_irq_save(flags); - if (info->xmit_cnt >= PAGE_SIZE - 1) { - local_irq_restore(flags); - 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) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - -#ifdef SERIAL_DEBUG_IO - printk("cy_flush_chars %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) - return; - - if (info->xmit_cnt <= 0 || tty->stopped - || tty->hw_stopped || !info->xmit_buf) - return; - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = channel; - base_addr[CyIER] |= CyTxMpty; - local_irq_restore(flags); -} /* cy_flush_chars */ - -/* This routine gets called when tty_write has put something into - the write_queue. If the port is not already transmitting stuff, - start it off by enabling interrupts. The interrupt service - routine will then ensure that the characters are sent. If the - port is already active, there is no need to kick it. - */ -static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - int c, total = 0; - -#ifdef SERIAL_DEBUG_IO - printk("cy_write %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_write")) { - return 0; - } - - if (!info->xmit_buf) { - return 0; - } - - while (1) { - local_irq_save(flags); - c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, - SERIAL_XMIT_SIZE - info->xmit_head)); - if (c <= 0) { - local_irq_restore(flags); - break; - } - - memcpy(info->xmit_buf + info->xmit_head, buf, c); - info->xmit_head = - (info->xmit_head + c) & (SERIAL_XMIT_SIZE - 1); - info->xmit_cnt += c; - local_irq_restore(flags); - - buf += c; - count -= c; - total += c; - } - - if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { - start_xmit(info); - } - return total; -} /* cy_write */ - -static int cy_write_room(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - int ret; - -#ifdef SERIAL_DEBUG_IO - printk("cy_write_room %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_write_room")) - return 0; - ret = PAGE_SIZE - info->xmit_cnt - 1; - if (ret < 0) - ret = 0; - return ret; -} /* cy_write_room */ - -static int cy_chars_in_buffer(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - -#ifdef SERIAL_DEBUG_IO - printk("cy_chars_in_buffer %s %d\n", tty->name, info->xmit_cnt); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) - return 0; - - return info->xmit_cnt; -} /* cy_chars_in_buffer */ - -static void cy_flush_buffer(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - -#ifdef SERIAL_DEBUG_IO - printk("cy_flush_buffer %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) - return; - local_irq_save(flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - local_irq_restore(flags); - tty_wakeup(tty); -} /* cy_flush_buffer */ - -/* This routine is called by the upper-layer tty layer to signal - that incoming characters should be throttled or that the - throttle should be released. - */ -static void cy_throttle(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - -#ifdef SERIAL_DEBUG_THROTTLE - char buf[64]; - - printk("throttle %s: %d....\n", tty_name(tty, buf), - tty->ldisc.chars_in_buffer(tty)); - printk("cy_throttle %s\n", tty->name); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_nthrottle")) { - return; - } - - if (I_IXOFF(tty)) { - info->x_char = STOP_CHAR(tty); - /* Should use the "Send Special Character" feature!!! */ - } - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - base_addr[CyMSVR1] = 0; - local_irq_restore(flags); -} /* cy_throttle */ - -static void cy_unthrottle(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - -#ifdef SERIAL_DEBUG_THROTTLE - char buf[64]; - - printk("throttle %s: %d....\n", tty_name(tty, buf), - tty->ldisc.chars_in_buffer(tty)); - printk("cy_unthrottle %s\n", tty->name); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_nthrottle")) { - return; - } - - if (I_IXOFF(tty)) { - info->x_char = START_CHAR(tty); - /* Should use the "Send Special Character" feature!!! */ - } - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - base_addr[CyMSVR1] = CyRTS; - local_irq_restore(flags); -} /* cy_unthrottle */ - -static int -get_serial_info(struct cyclades_port *info, - struct serial_struct __user * retinfo) -{ - struct serial_struct tmp; - -/* CP('g'); */ - if (!retinfo) - return -EFAULT; - memset(&tmp, 0, sizeof(tmp)); - tmp.type = info->type; - tmp.line = info->line; - tmp.port = info->line; - tmp.irq = 0; - tmp.flags = info->flags; - tmp.baud_base = 0; /*!!! */ - tmp.close_delay = info->close_delay; - tmp.custom_divisor = 0; /*!!! */ - tmp.hub6 = 0; /*!!! */ - return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; -} /* get_serial_info */ - -static int -set_serial_info(struct cyclades_port *info, - struct serial_struct __user * new_info) -{ - struct serial_struct new_serial; - struct cyclades_port old_info; - -/* CP('s'); */ - if (!new_info) - return -EFAULT; - if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) - return -EFAULT; - old_info = *info; - - if (!capable(CAP_SYS_ADMIN)) { - if ((new_serial.close_delay != info->close_delay) || - ((new_serial.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK) != - (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK))) - return -EPERM; - info->flags = ((info->flags & ~ASYNC_USR_MASK) | - (new_serial.flags & ASYNC_USR_MASK)); - goto check_and_exit; - } - - /* - * OK, past this point, all the error checking has been done. - * At this point, we start making changes..... - */ - - info->flags = ((info->flags & ~ASYNC_FLAGS) | - (new_serial.flags & ASYNC_FLAGS)); - info->close_delay = new_serial.close_delay; - -check_and_exit: - if (info->flags & ASYNC_INITIALIZED) { - config_setup(info); - return 0; - } - return startup(info); -} /* set_serial_info */ - -static int cy_tiocmget(struct tty_struct *tty, struct file *file) -{ - struct cyclades_port *info = tty->driver_data; - int channel; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - unsigned long flags; - unsigned char status; - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - status = base_addr[CyMSVR1] | base_addr[CyMSVR2]; - local_irq_restore(flags); - - return ((status & CyRTS) ? TIOCM_RTS : 0) - | ((status & CyDTR) ? TIOCM_DTR : 0) - | ((status & CyDCD) ? TIOCM_CAR : 0) - | ((status & CyDSR) ? TIOCM_DSR : 0) - | ((status & CyCTS) ? TIOCM_CTS : 0); -} /* cy_tiocmget */ - -static int -cy_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) -{ - struct cyclades_port *info = tty->driver_data; - int channel; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - unsigned long flags; - - channel = info->line; - - if (set & TIOCM_RTS) { - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - base_addr[CyMSVR1] = CyRTS; - local_irq_restore(flags); - } - if (set & TIOCM_DTR) { - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; -/* CP('S');CP('2'); */ - base_addr[CyMSVR2] = CyDTR; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: raising DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - local_irq_restore(flags); - } - - if (clear & TIOCM_RTS) { - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - base_addr[CyMSVR1] = 0; - local_irq_restore(flags); - } - if (clear & TIOCM_DTR) { - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; -/* CP('C');CP('2'); */ - base_addr[CyMSVR2] = 0; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: dropping DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - local_irq_restore(flags); - } - - return 0; -} /* set_modem_info */ - -static void send_break(struct cyclades_port *info, int duration) -{ /* Let the transmit ISR take care of this (since it - requires stuffing characters into the output stream). - */ - info->x_break = duration; - if (!info->xmit_cnt) { - start_xmit(info); - } -} /* send_break */ - -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))) - return -EFAULT; - info->mon.int_count = 0; - info->mon.char_count = 0; - info->mon.char_max = 0; - info->mon.char_last = 0; - return 0; -} - -static int set_threshold(struct cyclades_port *info, unsigned long __user * arg) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - unsigned long value; - int channel; - - if (get_user(value, arg)) - return -EFAULT; - - channel = info->line; - info->cor4 &= ~CyREC_FIFO; - info->cor4 |= value & CyREC_FIFO; - base_addr[CyCOR4] = info->cor4; - return 0; -} - -static int -get_threshold(struct cyclades_port *info, unsigned long __user * value) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - unsigned long tmp; - - channel = info->line; - - tmp = base_addr[CyCOR4] & CyREC_FIFO; - return put_user(tmp, value); -} - -static int -set_default_threshold(struct cyclades_port *info, unsigned long __user * arg) -{ - unsigned long value; - - if (get_user(value, arg)) - return -EFAULT; - - info->default_threshold = value & 0x0f; - return 0; -} - -static int -get_default_threshold(struct cyclades_port *info, unsigned long __user * value) -{ - return put_user(info->default_threshold, value); -} - -static int set_timeout(struct cyclades_port *info, unsigned long __user * arg) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - unsigned long value; - - if (get_user(value, arg)) - return -EFAULT; - - channel = info->line; - - base_addr[CyRTPRL] = value & 0xff; - base_addr[CyRTPRH] = (value >> 8) & 0xff; - return 0; -} - -static int get_timeout(struct cyclades_port *info, unsigned long __user * value) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - unsigned long tmp; - - channel = info->line; - - tmp = base_addr[CyRTPRL]; - return put_user(tmp, value); -} - -static int set_default_timeout(struct cyclades_port *info, unsigned long value) -{ - info->default_timeout = value & 0xff; - return 0; -} - -static int -get_default_timeout(struct cyclades_port *info, unsigned long __user * value) -{ - return put_user(info->default_timeout, value); -} - -static int -cy_ioctl(struct tty_struct *tty, struct file *file, - unsigned int cmd, unsigned long arg) -{ - struct cyclades_port *info = tty->driver_data; - int ret_val = 0; - void __user *argp = (void __user *)arg; - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_ioctl %s, cmd = %x arg = %lx\n", tty->name, cmd, arg); /* */ -#endif - - tty_lock(); - - switch (cmd) { - case CYGETMON: - ret_val = get_mon_info(info, argp); - break; - case CYGETTHRESH: - ret_val = get_threshold(info, argp); - break; - case CYSETTHRESH: - ret_val = set_threshold(info, argp); - break; - case CYGETDEFTHRESH: - ret_val = get_default_threshold(info, argp); - break; - case CYSETDEFTHRESH: - ret_val = set_default_threshold(info, argp); - break; - case CYGETTIMEOUT: - ret_val = get_timeout(info, argp); - break; - case CYSETTIMEOUT: - ret_val = set_timeout(info, argp); - break; - case CYGETDEFTIMEOUT: - ret_val = get_default_timeout(info, argp); - break; - case CYSETDEFTIMEOUT: - ret_val = set_default_timeout(info, (unsigned long)arg); - break; - case TCSBRK: /* SVID version: non-zero arg --> no break */ - ret_val = tty_check_change(tty); - if (ret_val) - break; - tty_wait_until_sent(tty, 0); - if (!arg) - send_break(info, HZ / 4); /* 1/4 second */ - break; - case TCSBRKP: /* support for POSIX tcsendbreak() */ - ret_val = tty_check_change(tty); - if (ret_val) - break; - tty_wait_until_sent(tty, 0); - send_break(info, arg ? arg * (HZ / 10) : HZ / 4); - break; - -/* The following commands are incompletely implemented!!! */ - case TIOCGSERIAL: - ret_val = get_serial_info(info, argp); - break; - case TIOCSSERIAL: - ret_val = set_serial_info(info, argp); - break; - default: - ret_val = -ENOIOCTLCMD; - } - tty_unlock(); - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_ioctl done\n"); -#endif - - return ret_val; -} /* cy_ioctl */ - -static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) -{ - struct cyclades_port *info = tty->driver_data; - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_set_termios %s\n", tty->name); -#endif - - if (tty->termios->c_cflag == old_termios->c_cflag) - return; - config_setup(info); - - if ((old_termios->c_cflag & CRTSCTS) && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->stopped = 0; - cy_start(tty); - } -#ifdef tytso_patch_94Nov25_1726 - if (!(old_termios->c_cflag & CLOCAL) && - (tty->termios->c_cflag & CLOCAL)) - wake_up_interruptible(&info->open_wait); -#endif -} /* cy_set_termios */ - -static void cy_close(struct tty_struct *tty, struct file *filp) -{ - struct cyclades_port *info = tty->driver_data; - -/* CP('C'); */ -#ifdef SERIAL_DEBUG_OTHER - printk("cy_close %s\n", tty->name); -#endif - - if (!info || serial_paranoia_check(info, tty->name, "cy_close")) { - return; - } -#ifdef SERIAL_DEBUG_OPEN - printk("cy_close %s, count = %d\n", tty->name, info->count); -#endif - - 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 - * be one in these conditions. If it's greater than - * one, we've got real problems, since it means the - * serial port won't be shutdown. - */ - printk("cy_close: bad serial port count; tty->count is 1, " - "info->count is %d\n", info->count); - info->count = 1; - } -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: decrementing count to %d\n", __LINE__, - info->count - 1); -#endif - if (--info->count < 0) { - printk("cy_close: bad serial port count for ttys%d: %d\n", - info->line, info->count); -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: setting count to 0\n", __LINE__); -#endif - info->count = 0; - } - if (info->count) - return; - info->flags |= ASYNC_CLOSING; - if (info->flags & ASYNC_INITIALIZED) - tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */ - shutdown(info); - cy_flush_buffer(tty); - tty_ldisc_flush(tty); - info->tty = NULL; - if (info->blocked_open) { - 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); - wake_up_interruptible(&info->close_wait); - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_close done\n"); -#endif -} /* cy_close */ - -/* - * cy_hangup() --- called by tty_hangup() when a hangup is signaled. - */ -void cy_hangup(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_hangup %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_hangup")) - return; - - shutdown(info); -#if 0 - info->event = 0; - info->count = 0; -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: setting count to 0\n", __LINE__); -#endif - info->tty = 0; -#endif - info->flags &= ~ASYNC_NORMAL_ACTIVE; - wake_up_interruptible(&info->open_wait); -} /* cy_hangup */ - -/* - * ------------------------------------------------------------ - * cy_open() and friends - * ------------------------------------------------------------ - */ - -static int -block_til_ready(struct tty_struct *tty, struct file *filp, - struct cyclades_port *info) -{ - DECLARE_WAITQUEUE(wait, current); - unsigned long flags; - int channel; - int retval; - volatile u_char *base_addr = (u_char *) BASE_ADDR; - - /* - * If the device is in the middle of being closed, then block - * until it's done, and then try again. - */ - if (info->flags & ASYNC_CLOSING) { - interruptible_sleep_on(&info->close_wait); - if (info->flags & ASYNC_HUP_NOTIFY) { - return -EAGAIN; - } else { - return -ERESTARTSYS; - } - } - - /* - * If non-blocking mode is set, then make the check up front - * and then exit. - */ - if (filp->f_flags & O_NONBLOCK) { - info->flags |= ASYNC_NORMAL_ACTIVE; - return 0; - } - - /* - * Block waiting for the carrier detect and the line to become - * free (i.e., not in use by the callout). While we are in - * this loop, info->count is dropped by one, so that - * cy_close() knows when to free things. We restore it upon - * exit, either normal or abnormal. - */ - retval = 0; - add_wait_queue(&info->open_wait, &wait); -#ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready before block: %s, count = %d\n", - tty->name, info->count); - /**/ -#endif - info->count--; -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: decrementing count to %d\n", __LINE__, info->count); -#endif - info->blocked_open++; - - channel = info->line; - - while (1) { - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - base_addr[CyMSVR1] = CyRTS; -/* CP('S');CP('4'); */ - base_addr[CyMSVR2] = CyDTR; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: raising DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - local_irq_restore(flags); - set_current_state(TASK_INTERRUPTIBLE); - if (tty_hung_up_p(filp) - || !(info->flags & ASYNC_INITIALIZED)) { - if (info->flags & ASYNC_HUP_NOTIFY) { - retval = -EAGAIN; - } else { - retval = -ERESTARTSYS; - } - break; - } - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; -/* CP('L');CP1(1 && C_CLOCAL(tty)); CP1(1 && (base_addr[CyMSVR1] & CyDCD) ); */ - if (!(info->flags & ASYNC_CLOSING) - && (C_CLOCAL(tty) - || (base_addr[CyMSVR1] & CyDCD))) { - local_irq_restore(flags); - break; - } - local_irq_restore(flags); - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } -#ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready blocking: %s, count = %d\n", - tty->name, info->count); - /**/ -#endif - tty_unlock(); - schedule(); - tty_lock(); - } - __set_current_state(TASK_RUNNING); - remove_wait_queue(&info->open_wait, &wait); - if (!tty_hung_up_p(filp)) { - info->count++; -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: incrementing count to %d\n", __LINE__, - info->count); -#endif - } - info->blocked_open--; -#ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready after blocking: %s, count = %d\n", - tty->name, info->count); - /**/ -#endif - if (retval) - return retval; - info->flags |= ASYNC_NORMAL_ACTIVE; - return 0; -} /* block_til_ready */ - -/* - * This routine is called whenever a serial port is opened. It - * performs the serial-specific initialization for the tty structure. - */ -int cy_open(struct tty_struct *tty, struct file *filp) -{ - struct cyclades_port *info; - int retval, line; - -/* CP('O'); */ - line = tty->index; - if ((line < 0) || (NR_PORTS <= line)) { - return -ENODEV; - } - info = &cy_port[line]; - if (info->line < 0) { - return -ENODEV; - } -#ifdef SERIAL_DEBUG_OTHER - printk("cy_open %s\n", tty->name); /* */ -#endif - if (serial_paranoia_check(info, tty->name, "cy_open")) { - return -ENODEV; - } -#ifdef SERIAL_DEBUG_OPEN - printk("cy_open %s, count = %d\n", tty->name, info->count); - /**/ -#endif - info->count++; -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: incrementing count to %d\n", __LINE__, info->count); -#endif - tty->driver_data = info; - info->tty = tty; - - /* - * Start up serial port - */ - retval = startup(info); - if (retval) { - return retval; - } - - retval = block_til_ready(tty, filp, info); - if (retval) { -#ifdef SERIAL_DEBUG_OPEN - printk("cy_open returning after block_til_ready with %d\n", - retval); -#endif - return retval; - } -#ifdef SERIAL_DEBUG_OPEN - printk("cy_open done\n"); - /**/ -#endif - return 0; -} /* cy_open */ - -/* - * --------------------------------------------------------------------- - * serial167_init() and friends - * - * serial167_init() is called at boot-time to initialize the serial driver. - * --------------------------------------------------------------------- - */ - -/* - * This routine prints out the appropriate serial driver version - * number, and identifies which options were configured into this - * driver. - */ -static void show_version(void) -{ - printk("MVME166/167 cd2401 driver\n"); -} /* show_version */ - -/* initialize chips on card -- return number of valid - chips (which is number of ports/4) */ - -/* - * This initialises the hardware to a reasonable state. It should - * probe the chip first so as to copy 166-Bug setup as a default for - * port 0. It initialises CMR to CyASYNC; that is never done again, so - * as to limit the number of CyINIT_CHAN commands in normal running. - * - * ... I wonder what I should do if this fails ... - */ - -void mvme167_serial_console_setup(int cflag) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int ch; - u_char spd; - u_char rcor, rbpr, badspeed = 0; - unsigned long flags; - - local_irq_save(flags); - - /* - * First probe channel zero of the chip, to see what speed has - * been selected. - */ - - base_addr[CyCAR] = 0; - - rcor = base_addr[CyRCOR] << 5; - rbpr = base_addr[CyRBPR]; - - for (spd = 0; spd < sizeof(baud_bpr); spd++) - if (rbpr == baud_bpr[spd] && rcor == baud_co[spd]) - break; - if (spd >= sizeof(baud_bpr)) { - spd = 14; /* 19200 */ - badspeed = 1; /* Failed to identify speed */ - } - initial_console_speed = spd; - - /* OK, we have chosen a speed, now reset and reinitialise */ - - my_udelay(20000L); /* Allow time for any active o/p to complete */ - if (base_addr[CyCCR] != 0x00) { - local_irq_restore(flags); - /* printk(" chip is never idle (CCR != 0)\n"); */ - return; - } - - base_addr[CyCCR] = CyCHIP_RESET; /* Reset the chip */ - my_udelay(1000L); - - if (base_addr[CyGFRCR] == 0x00) { - local_irq_restore(flags); - /* printk(" chip is not responding (GFRCR stayed 0)\n"); */ - return; - } - - /* - * System clock is 20Mhz, divided by 2048, so divide by 10 for a 1.0ms - * tick - */ - - base_addr[CyTPR] = 10; - - base_addr[CyPILR1] = 0x01; /* Interrupt level for modem change */ - base_addr[CyPILR2] = 0x02; /* Interrupt level for tx ints */ - base_addr[CyPILR3] = 0x03; /* Interrupt level for rx ints */ - - /* - * Attempt to set up all channels to something reasonable, and - * bang out a INIT_CHAN command. We should then be able to limit - * the amount of fiddling we have to do in normal running. - */ - - for (ch = 3; ch >= 0; ch--) { - base_addr[CyCAR] = (u_char) ch; - base_addr[CyIER] = 0; - base_addr[CyCMR] = CyASYNC; - base_addr[CyLICR] = (u_char) ch << 2; - base_addr[CyLIVR] = 0x5c; - base_addr[CyTCOR] = baud_co[spd]; - base_addr[CyTBPR] = baud_bpr[spd]; - base_addr[CyRCOR] = baud_co[spd] >> 5; - base_addr[CyRBPR] = baud_bpr[spd]; - base_addr[CySCHR1] = 'Q' & 0x1f; - base_addr[CySCHR2] = 'X' & 0x1f; - base_addr[CySCRL] = 0; - base_addr[CySCRH] = 0; - base_addr[CyCOR1] = Cy_8_BITS | CyPARITY_NONE; - base_addr[CyCOR2] = 0; - base_addr[CyCOR3] = Cy_1_STOP; - base_addr[CyCOR4] = baud_cor4[spd]; - base_addr[CyCOR5] = 0; - base_addr[CyCOR6] = 0; - base_addr[CyCOR7] = 0; - base_addr[CyRTPRL] = 2; - base_addr[CyRTPRH] = 0; - base_addr[CyMSVR1] = 0; - base_addr[CyMSVR2] = 0; - write_cy_cmd(base_addr, CyINIT_CHAN | CyDIS_RCVR | CyDIS_XMTR); - } - - /* - * Now do specials for channel zero.... - */ - - base_addr[CyMSVR1] = CyRTS; - base_addr[CyMSVR2] = CyDTR; - base_addr[CyIER] = CyRxData; - write_cy_cmd(base_addr, CyENB_RCVR | CyENB_XMTR); - - local_irq_restore(flags); - - my_udelay(20000L); /* Let it all settle down */ - - printk("CD2401 initialised, chip is rev 0x%02x\n", base_addr[CyGFRCR]); - if (badspeed) - printk - (" WARNING: Failed to identify line speed, rcor=%02x,rbpr=%02x\n", - rcor >> 5, rbpr); -} /* serial_console_init */ - -static const struct tty_operations cy_ops = { - .open = cy_open, - .close = cy_close, - .write = cy_write, - .put_char = cy_put_char, - .flush_chars = cy_flush_chars, - .write_room = cy_write_room, - .chars_in_buffer = cy_chars_in_buffer, - .flush_buffer = cy_flush_buffer, - .ioctl = cy_ioctl, - .throttle = cy_throttle, - .unthrottle = cy_unthrottle, - .set_termios = cy_set_termios, - .stop = cy_stop, - .start = cy_start, - .hangup = cy_hangup, - .tiocmget = cy_tiocmget, - .tiocmset = cy_tiocmset, -}; - -/* The serial driver boot-time initialization code! - Hardware I/O ports are mapped to character special devices on a - first found, first allocated manner. That is, this code searches - for Cyclom cards in the system. As each is found, it is probed - to discover how many chips (and thus how many ports) are present. - These ports are mapped to the tty ports 64 and upward in monotonic - fashion. If an 8-port card is replaced with a 16-port card, the - port mapping on a following card will shift. - - This approach is different from what is used in the other serial - device driver because the Cyclom is more properly a multiplexer, - not just an aggregation of serial ports on one card. - - If there are more cards with more ports than have been statically - allocated above, a warning is printed and the extra ports are ignored. - */ -static int __init serial167_init(void) -{ - struct cyclades_port *info; - int ret = 0; - int good_ports = 0; - int port_num = 0; - int index; - int DefSpeed; -#ifdef notyet - struct sigaction sa; -#endif - - if (!(mvme16x_config & MVME16x_CONFIG_GOT_CD2401)) - return 0; - - cy_serial_driver = alloc_tty_driver(NR_PORTS); - if (!cy_serial_driver) - return -ENOMEM; - -#if 0 - scrn[1] = '\0'; -#endif - - show_version(); - - /* Has "console=0,9600n8" been used in bootinfo to change speed? */ - if (serial_console_cflag) - DefSpeed = serial_console_cflag & 0017; - else { - DefSpeed = initial_console_speed; - serial_console_info = &cy_port[0]; - serial_console_cflag = DefSpeed | CS8; -#if 0 - serial_console = 64; /*callout_driver.minor_start */ -#endif - } - - /* Initialize the tty_driver structure */ - - cy_serial_driver->owner = THIS_MODULE; - cy_serial_driver->name = "ttyS"; - cy_serial_driver->major = TTY_MAJOR; - cy_serial_driver->minor_start = 64; - cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; - cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; - cy_serial_driver->init_termios = tty_std_termios; - cy_serial_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - cy_serial_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(cy_serial_driver, &cy_ops); - - ret = tty_register_driver(cy_serial_driver); - if (ret) { - printk(KERN_ERR "Couldn't register MVME166/7 serial driver\n"); - put_tty_driver(cy_serial_driver); - return ret; - } - - port_num = 0; - info = cy_port; - for (index = 0; index < 1; index++) { - - good_ports = 4; - - if (port_num < NR_PORTS) { - while (good_ports-- && port_num < NR_PORTS) { - /*** initialize port ***/ - info->magic = CYCLADES_MAGIC; - info->type = PORT_CIRRUS; - info->card = index; - info->line = port_num; - info->flags = STD_COM_FLAGS; - info->tty = NULL; - info->xmit_fifo_size = 12; - info->cor1 = CyPARITY_NONE | Cy_8_BITS; - info->cor2 = CyETC; - info->cor3 = Cy_1_STOP; - info->cor4 = 0x08; /* _very_ small receive threshold */ - info->cor5 = 0; - info->cor6 = 0; - info->cor7 = 0; - info->tbpr = baud_bpr[DefSpeed]; /* Tx BPR */ - info->tco = baud_co[DefSpeed]; /* Tx CO */ - info->rbpr = baud_bpr[DefSpeed]; /* Rx BPR */ - info->rco = baud_co[DefSpeed] >> 5; /* Rx CO */ - info->close_delay = 0; - info->x_char = 0; - info->count = 0; -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: setting count to 0\n", - __LINE__); -#endif - info->blocked_open = 0; - info->default_threshold = 0; - info->default_timeout = 0; - init_waitqueue_head(&info->open_wait); - init_waitqueue_head(&info->close_wait); - /* info->session */ - /* info->pgrp */ -/*** !!!!!!!! this may expose new bugs !!!!!!!!! *********/ - info->read_status_mask = - CyTIMEOUT | CySPECHAR | CyBREAK | CyPARITY | - CyFRAME | CyOVERRUN; - /* info->timeout */ - - printk("ttyS%d ", info->line); - port_num++; - info++; - if (!(port_num & 7)) { - printk("\n "); - } - } - } - printk("\n"); - } - while (port_num < NR_PORTS) { - info->line = -1; - port_num++; - info++; - } - - ret = request_irq(MVME167_IRQ_SER_ERR, cd2401_rxerr_interrupt, 0, - "cd2401_errors", cd2401_rxerr_interrupt); - if (ret) { - printk(KERN_ERR "Could't get cd2401_errors IRQ"); - goto cleanup_serial_driver; - } - - ret = request_irq(MVME167_IRQ_SER_MODEM, cd2401_modem_interrupt, 0, - "cd2401_modem", cd2401_modem_interrupt); - if (ret) { - printk(KERN_ERR "Could't get cd2401_modem IRQ"); - goto cleanup_irq_cd2401_errors; - } - - ret = request_irq(MVME167_IRQ_SER_TX, cd2401_tx_interrupt, 0, - "cd2401_txints", cd2401_tx_interrupt); - if (ret) { - printk(KERN_ERR "Could't get cd2401_txints IRQ"); - goto cleanup_irq_cd2401_modem; - } - - ret = request_irq(MVME167_IRQ_SER_RX, cd2401_rx_interrupt, 0, - "cd2401_rxints", cd2401_rx_interrupt); - if (ret) { - printk(KERN_ERR "Could't get cd2401_rxints IRQ"); - goto cleanup_irq_cd2401_txints; - } - - /* Now we have registered the interrupt handlers, allow the interrupts */ - - pcc2chip[PccSCCMICR] = 0x15; /* Serial ints are level 5 */ - pcc2chip[PccSCCTICR] = 0x15; - pcc2chip[PccSCCRICR] = 0x15; - - pcc2chip[PccIMLR] = 3; /* Allow PCC2 ints above 3!? */ - - return 0; -cleanup_irq_cd2401_txints: - free_irq(MVME167_IRQ_SER_TX, cd2401_tx_interrupt); -cleanup_irq_cd2401_modem: - free_irq(MVME167_IRQ_SER_MODEM, cd2401_modem_interrupt); -cleanup_irq_cd2401_errors: - free_irq(MVME167_IRQ_SER_ERR, cd2401_rxerr_interrupt); -cleanup_serial_driver: - if (tty_unregister_driver(cy_serial_driver)) - printk(KERN_ERR - "Couldn't unregister MVME166/7 serial driver\n"); - put_tty_driver(cy_serial_driver); - return ret; -} /* serial167_init */ - -module_init(serial167_init); - -#ifdef CYCLOM_SHOW_STATUS -static void show_status(int line_num) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - struct cyclades_port *info; - unsigned long flags; - - info = &cy_port[line_num]; - channel = info->line; - printk(" channel %d\n", channel); - /**/ printk(" cy_port\n"); - printk(" card line flags = %d %d %x\n", - info->card, info->line, info->flags); - printk - (" *tty read_status_mask timeout xmit_fifo_size = %lx %x %x %x\n", - (long)info->tty, info->read_status_mask, info->timeout, - info->xmit_fifo_size); - printk(" cor1,cor2,cor3,cor4,cor5,cor6,cor7 = %x %x %x %x %x %x %x\n", - info->cor1, info->cor2, info->cor3, info->cor4, info->cor5, - info->cor6, info->cor7); - printk(" tbpr,tco,rbpr,rco = %d %d %d %d\n", info->tbpr, info->tco, - info->rbpr, info->rco); - printk(" close_delay event count = %d %d %d\n", info->close_delay, - info->event, info->count); - printk(" x_char blocked_open = %x %x\n", info->x_char, - info->blocked_open); - printk(" open_wait = %lx %lx %lx\n", (long)info->open_wait); - - local_irq_save(flags); - -/* Global Registers */ - - printk(" CyGFRCR %x\n", base_addr[CyGFRCR]); - printk(" CyCAR %x\n", base_addr[CyCAR]); - printk(" CyRISR %x\n", base_addr[CyRISR]); - printk(" CyTISR %x\n", base_addr[CyTISR]); - printk(" CyMISR %x\n", base_addr[CyMISR]); - printk(" CyRIR %x\n", base_addr[CyRIR]); - printk(" CyTIR %x\n", base_addr[CyTIR]); - printk(" CyMIR %x\n", base_addr[CyMIR]); - printk(" CyTPR %x\n", base_addr[CyTPR]); - - base_addr[CyCAR] = (u_char) channel; - -/* Virtual Registers */ - -#if 0 - printk(" CyRIVR %x\n", base_addr[CyRIVR]); - printk(" CyTIVR %x\n", base_addr[CyTIVR]); - printk(" CyMIVR %x\n", base_addr[CyMIVR]); - printk(" CyMISR %x\n", base_addr[CyMISR]); -#endif - -/* Channel Registers */ - - printk(" CyCCR %x\n", base_addr[CyCCR]); - printk(" CyIER %x\n", base_addr[CyIER]); - printk(" CyCOR1 %x\n", base_addr[CyCOR1]); - printk(" CyCOR2 %x\n", base_addr[CyCOR2]); - printk(" CyCOR3 %x\n", base_addr[CyCOR3]); - printk(" CyCOR4 %x\n", base_addr[CyCOR4]); - printk(" CyCOR5 %x\n", base_addr[CyCOR5]); -#if 0 - printk(" CyCCSR %x\n", base_addr[CyCCSR]); - printk(" CyRDCR %x\n", base_addr[CyRDCR]); -#endif - printk(" CySCHR1 %x\n", base_addr[CySCHR1]); - printk(" CySCHR2 %x\n", base_addr[CySCHR2]); -#if 0 - printk(" CySCHR3 %x\n", base_addr[CySCHR3]); - printk(" CySCHR4 %x\n", base_addr[CySCHR4]); - printk(" CySCRL %x\n", base_addr[CySCRL]); - printk(" CySCRH %x\n", base_addr[CySCRH]); - printk(" CyLNC %x\n", base_addr[CyLNC]); - printk(" CyMCOR1 %x\n", base_addr[CyMCOR1]); - printk(" CyMCOR2 %x\n", base_addr[CyMCOR2]); -#endif - printk(" CyRTPRL %x\n", base_addr[CyRTPRL]); - printk(" CyRTPRH %x\n", base_addr[CyRTPRH]); - printk(" CyMSVR1 %x\n", base_addr[CyMSVR1]); - printk(" CyMSVR2 %x\n", base_addr[CyMSVR2]); - printk(" CyRBPR %x\n", base_addr[CyRBPR]); - printk(" CyRCOR %x\n", base_addr[CyRCOR]); - printk(" CyTBPR %x\n", base_addr[CyTBPR]); - printk(" CyTCOR %x\n", base_addr[CyTCOR]); - - local_irq_restore(flags); -} /* show_status */ -#endif - -#if 0 -/* Dummy routine in mvme16x/config.c for now */ - -/* Serial console setup. Called from linux/init/main.c */ - -void console_setup(char *str, int *ints) -{ - char *s; - int baud, bits, parity; - int cflag = 0; - - /* Sanity check. */ - if (ints[0] > 3 || ints[1] > 3) - return; - - /* Get baud, bits and parity */ - baud = 2400; - bits = 8; - parity = 'n'; - if (ints[2]) - baud = ints[2]; - if ((s = strchr(str, ','))) { - do { - s++; - } while (*s >= '0' && *s <= '9'); - if (*s) - parity = *s++; - if (*s) - bits = *s - '0'; - } - - /* Now construct a cflag setting. */ - switch (baud) { - case 1200: - cflag |= B1200; - break; - case 9600: - cflag |= B9600; - break; - case 19200: - cflag |= B19200; - break; - case 38400: - cflag |= B38400; - break; - case 2400: - default: - cflag |= B2400; - break; - } - switch (bits) { - case 7: - cflag |= CS7; - break; - default: - case 8: - cflag |= CS8; - break; - } - switch (parity) { - case 'o': - case 'O': - cflag |= PARODD; - break; - case 'e': - case 'E': - cflag |= PARENB; - break; - } - - serial_console_info = &cy_port[ints[1]]; - serial_console_cflag = cflag; - serial_console = ints[1] + 64; /*callout_driver.minor_start */ -} -#endif - -/* - * The following is probably out of date for 2.1.x serial console stuff. - * - * The console is registered early on from arch/m68k/kernel/setup.c, and - * it therefore relies on the chip being setup correctly by 166-Bug. This - * seems reasonable, as the serial port has been used to invoke the system - * boot. It also means that this function must not rely on any data - * initialisation performed by serial167_init() etc. - * - * Of course, once the console has been registered, we had better ensure - * that serial167_init() doesn't leave the chip non-functional. - * - * The console must be locked when we get here. - */ - -void serial167_console_write(struct console *co, const char *str, - unsigned count) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - unsigned long flags; - volatile u_char sink; - u_char ier; - int port; - u_char do_lf = 0; - int i = 0; - - local_irq_save(flags); - - /* Ensure transmitter is enabled! */ - - port = 0; - base_addr[CyCAR] = (u_char) port; - while (base_addr[CyCCR]) - ; - base_addr[CyCCR] = CyENB_XMTR; - - ier = base_addr[CyIER]; - base_addr[CyIER] = CyTxMpty; - - while (1) { - if (pcc2chip[PccSCCTICR] & 0x20) { - /* We have a Tx int. Acknowledge it */ - sink = pcc2chip[PccTPIACKR]; - if ((base_addr[CyLICR] >> 2) == port) { - if (i == count) { - /* Last char of string is now output */ - base_addr[CyTEOIR] = CyNOTRANS; - break; - } - if (do_lf) { - base_addr[CyTDR] = '\n'; - str++; - i++; - do_lf = 0; - } else if (*str == '\n') { - base_addr[CyTDR] = '\r'; - do_lf = 1; - } else { - base_addr[CyTDR] = *str++; - i++; - } - base_addr[CyTEOIR] = 0; - } else - base_addr[CyTEOIR] = CyNOTRANS; - } - } - - base_addr[CyIER] = ier; - - local_irq_restore(flags); -} - -static struct tty_driver *serial167_console_device(struct console *c, - int *index) -{ - *index = c->index; - return cy_serial_driver; -} - -static struct console sercons = { - .name = "ttyS", - .write = serial167_console_write, - .device = serial167_console_device, - .flags = CON_PRINTBUFFER, - .index = -1, -}; - -static int __init serial167_console_init(void) -{ - if (vme_brdtype == VME_TYPE_MVME166 || - vme_brdtype == VME_TYPE_MVME167 || - vme_brdtype == VME_TYPE_MVME177) { - mvme167_serial_console_setup(0); - register_console(&sercons); - } - return 0; -} - -console_initcall(serial167_console_init); - -MODULE_LICENSE("GPL"); |