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authorAdrian Bunk <bunk@stusta.de>2006-01-19 18:07:10 +0100
committerAdrian Bunk <bunk@r063144.stusta.swh.mhn.de>2006-01-19 18:07:10 +0100
commit9c4b562abc9005e4b413de02c85d3d29da707cba (patch)
tree20985e711d285aaf1b87aa3b4837a7ed2bc3b73a /drivers/char/ip2/ip2main.c
parent0f36b018b2e314d45af86449f1a97facb1fbe300 (diff)
Move ip2.c and ip2main.c to drivers/char/ip2/ where the other files
used by this driver reside. Renamed ip2.c to ip2base.c to allow ip2.o to be built from multiple objects. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Michael H. Warfield <mhw@WittsEnd.com>
Diffstat (limited to 'drivers/char/ip2/ip2main.c')
-rw-r--r--drivers/char/ip2/ip2main.c3260
1 files changed, 3260 insertions, 0 deletions
diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c
new file mode 100644
index 00000000000..52f64bfb0dc
--- /dev/null
+++ b/drivers/char/ip2/ip2main.c
@@ -0,0 +1,3260 @@
+/*
+*
+* (c) 1999 by Computone Corporation
+*
+********************************************************************************
+*
+* PACKAGE: Linux tty Device Driver for IntelliPort family of multiport
+* serial I/O controllers.
+*
+* DESCRIPTION: Mainline code for the device driver
+*
+*******************************************************************************/
+// ToDo:
+//
+// Fix the immediate DSS_NOW problem.
+// Work over the channel stats return logic in ip2_ipl_ioctl so they
+// make sense for all 256 possible channels and so the user space
+// utilities will compile and work properly.
+//
+// Done:
+//
+// 1.2.14 /\/\|=mhw=|\/\/
+// Added bounds checking to ip2_ipl_ioctl to avoid potential terroristic acts.
+// Changed the definition of ip2trace to be more consistent with kernel style
+// Thanks to Andreas Dilger <adilger@turbolabs.com> for these updates
+//
+// 1.2.13 /\/\|=mhw=|\/\/
+// DEVFS: Renamed ttf/{n} to tts/F{n} and cuf/{n} to cua/F{n} to conform
+// to agreed devfs serial device naming convention.
+//
+// 1.2.12 /\/\|=mhw=|\/\/
+// Cleaned up some remove queue cut and paste errors
+//
+// 1.2.11 /\/\|=mhw=|\/\/
+// Clean up potential NULL pointer dereferences
+// Clean up devfs registration
+// Add kernel command line parsing for io and irq
+// Compile defaults for io and irq are now set in ip2.c not ip2.h!
+// Reworked poll_only hack for explicit parameter setting
+// You must now EXPLICITLY set poll_only = 1 or set all irqs to 0
+// Merged ip2_loadmain and old_ip2_init
+// Converted all instances of interruptible_sleep_on into queue calls
+// Most of these had no race conditions but better to clean up now
+//
+// 1.2.10 /\/\|=mhw=|\/\/
+// Fixed the bottom half interrupt handler and enabled USE_IQI
+// to split the interrupt handler into a formal top-half / bottom-half
+// Fixed timing window on high speed processors that queued messages to
+// the outbound mail fifo faster than the board could handle.
+//
+// 1.2.9
+// Four box EX was barfing on >128k kmalloc, made structure smaller by
+// reducing output buffer size
+//
+// 1.2.8
+// Device file system support (MHW)
+//
+// 1.2.7
+// Fixed
+// Reload of ip2 without unloading ip2main hangs system on cat of /proc/modules
+//
+// 1.2.6
+//Fixes DCD problems
+// DCD was not reported when CLOCAL was set on call to TIOCMGET
+//
+//Enhancements:
+// TIOCMGET requests and waits for status return
+// No DSS interrupts enabled except for DCD when needed
+//
+// For internal use only
+//
+//#define IP2DEBUG_INIT
+//#define IP2DEBUG_OPEN
+//#define IP2DEBUG_WRITE
+//#define IP2DEBUG_READ
+//#define IP2DEBUG_IOCTL
+//#define IP2DEBUG_IPL
+
+//#define IP2DEBUG_TRACE
+//#define DEBUG_FIFO
+
+/************/
+/* Includes */
+/************/
+#include <linux/config.h>
+
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/devfs_fs_kernel.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/major.h>
+#include <linux/wait.h>
+#include <linux/device.h>
+
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/termios.h>
+#include <linux/tty_driver.h>
+#include <linux/serial.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+
+#include <linux/cdk.h>
+#include <linux/comstats.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include <linux/vmalloc.h>
+#include <linux/init.h>
+
+#include <asm/uaccess.h>
+
+#include "ip2types.h"
+#include "ip2trace.h"
+#include "ip2ioctl.h"
+#include "ip2.h"
+#include "i2ellis.h"
+#include "i2lib.h"
+
+/*****************
+ * /proc/ip2mem *
+ *****************/
+
+#include <linux/proc_fs.h>
+
+static int ip2_read_procmem(char *, char **, off_t, int);
+static int ip2_read_proc(char *, char **, off_t, int, int *, void * );
+
+/********************/
+/* Type Definitions */
+/********************/
+
+/*************/
+/* Constants */
+/*************/
+
+/* String constants to identify ourselves */
+static char *pcName = "Computone IntelliPort Plus multiport driver";
+static char *pcVersion = "1.2.14";
+
+/* String constants for port names */
+static char *pcDriver_name = "ip2";
+static char *pcIpl = "ip2ipl";
+
+/* Serial subtype definitions */
+#define SERIAL_TYPE_NORMAL 1
+
+// cheezy kludge or genius - you decide?
+int ip2_loadmain(int *, int *, unsigned char *, int);
+static unsigned char *Fip_firmware;
+static int Fip_firmware_size;
+
+/***********************/
+/* Function Prototypes */
+/***********************/
+
+/* Global module entry functions */
+
+/* Private (static) functions */
+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 void ip2_flush_chars(PTTY);
+static int ip2_write_room(PTTY);
+static int ip2_chars_in_buf(PTTY);
+static void ip2_flush_buffer(PTTY);
+static int ip2_ioctl(PTTY, struct file *, UINT, ULONG);
+static void ip2_set_termios(PTTY, struct termios *);
+static void ip2_set_line_discipline(PTTY);
+static void ip2_throttle(PTTY);
+static void ip2_unthrottle(PTTY);
+static void ip2_stop(PTTY);
+static void ip2_start(PTTY);
+static void ip2_hangup(PTTY);
+static int ip2_tiocmget(struct tty_struct *tty, struct file *file);
+static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear);
+
+static void set_irq(int, int);
+static void ip2_interrupt_bh(i2eBordStrPtr pB);
+static irqreturn_t ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs);
+static void ip2_poll(unsigned long arg);
+static inline void service_all_boards(void);
+static void do_input(void *p);
+static void do_status(void *p);
+
+static void ip2_wait_until_sent(PTTY,int);
+
+static void set_params (i2ChanStrPtr, struct termios *);
+static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *);
+static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *);
+
+static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *);
+static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *);
+static int ip2_ipl_ioctl(struct inode *, struct file *, UINT, ULONG);
+static int ip2_ipl_open(struct inode *, struct file *);
+
+static int DumpTraceBuffer(char __user *, int);
+static int DumpFifoBuffer( char __user *, int);
+
+static void ip2_init_board(int);
+static unsigned short find_eisa_board(int);
+
+/***************/
+/* Static Data */
+/***************/
+
+static struct tty_driver *ip2_tty_driver;
+
+/* Here, then is a table of board pointers which the interrupt routine should
+ * scan through to determine who it must service.
+ */
+static unsigned short i2nBoards; // Number of boards here
+
+static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS];
+
+static i2ChanStrPtr DevTable[IP2_MAX_PORTS];
+//DevTableMem just used to save addresses for kfree
+static void *DevTableMem[IP2_MAX_BOARDS];
+
+/* This is the driver descriptor for the ip2ipl device, which is used to
+ * download the loadware to the boards.
+ */
+static struct file_operations ip2_ipl = {
+ .owner = THIS_MODULE,
+ .read = ip2_ipl_read,
+ .write = ip2_ipl_write,
+ .ioctl = ip2_ipl_ioctl,
+ .open = ip2_ipl_open,
+};
+
+static unsigned long irq_counter = 0;
+static unsigned long bh_counter = 0;
+
+// Use immediate queue to service interrupts
+#define USE_IQI
+//#define USE_IQ // PCI&2.2 needs work
+
+/* The timer_list entry for our poll routine. If interrupt operation is not
+ * selected, the board is serviced periodically to see if anything needs doing.
+ */
+#define POLL_TIMEOUT (jiffies + 1)
+static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0);
+static char TimerOn;
+
+#ifdef IP2DEBUG_TRACE
+/* Trace (debug) buffer data */
+#define TRACEMAX 1000
+static unsigned long tracebuf[TRACEMAX];
+static int tracestuff;
+static int tracestrip;
+static int tracewrap;
+#endif
+
+/**********/
+/* Macros */
+/**********/
+
+#if defined(MODULE) && defined(IP2DEBUG_OPEN)
+#define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, ttyc=%d, modc=%x -> %s\n", \
+ tty->name,(pCh->flags),ip2_tty_driver->refcount, \
+ tty->count,/*GET_USE_COUNT(module)*/0,s)
+#else
+#define DBG_CNT(s)
+#endif
+
+/********/
+/* Code */
+/********/
+
+#include "i2ellis.c" /* Extremely low-level interface services */
+#include "i2cmd.c" /* Standard loadware command definitions */
+#include "i2lib.c" /* High level interface services */
+
+/* Configuration area for modprobe */
+
+MODULE_AUTHOR("Doug McNash");
+MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
+
+static int poll_only = 0;
+
+static int Eisa_irq;
+static int Eisa_slot;
+
+static int iindx;
+static char rirqs[IP2_MAX_BOARDS];
+static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0};
+
+/* for sysfs class support */
+static struct class *ip2_class;
+
+// Some functions to keep track of what irq's we have
+
+static int __init
+is_valid_irq(int irq)
+{
+ int *i = Valid_Irqs;
+
+ while ((*i != 0) && (*i != irq)) {
+ i++;
+ }
+ return (*i);
+}
+
+static void __init
+mark_requested_irq( char irq )
+{
+ rirqs[iindx++] = irq;
+}
+
+#ifdef MODULE
+static int __init
+clear_requested_irq( char irq )
+{
+ int i;
+ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ if (rirqs[i] == irq) {
+ rirqs[i] = 0;
+ return 1;
+ }
+ }
+ return 0;
+}
+#endif
+
+static int __init
+have_requested_irq( char irq )
+{
+ // array init to zeros so 0 irq will not be requested as a side effect
+ int i;
+ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ if (rirqs[i] == irq)
+ return 1;
+ }
+ return 0;
+}
+
+/******************************************************************************/
+/* Function: init_module() */
+/* Parameters: None */
+/* Returns: Success (0) */
+/* */
+/* Description: */
+/* This is a required entry point for an installable module. It simply calls */
+/* the driver initialisation function and returns what it returns. */
+/******************************************************************************/
+#ifdef MODULE
+int
+init_module(void)
+{
+#ifdef IP2DEBUG_INIT
+ printk (KERN_DEBUG "Loading module ...\n" );
+#endif
+ return 0;
+}
+#endif /* MODULE */
+
+/******************************************************************************/
+/* Function: cleanup_module() */
+/* Parameters: None */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* This is a required entry point for an installable module. It has to return */
+/* the device and the driver to a passive state. It should not be necessary */
+/* to reset the board fully, especially as the loadware is downloaded */
+/* externally rather than in the driver. We just want to disable the board */
+/* and clear the loadware to a reset state. To allow this there has to be a */
+/* way to detect whether the board has the loadware running at init time to */
+/* handle subsequent installations of the driver. All memory allocated by the */
+/* driver should be returned since it may be unloaded from memory. */
+/******************************************************************************/
+#ifdef MODULE
+void
+cleanup_module(void)
+{
+ int err;
+ int i;
+
+#ifdef IP2DEBUG_INIT
+ printk (KERN_DEBUG "Unloading %s: version %s\n", pcName, pcVersion );
+#endif
+ /* Stop poll timer if we had one. */
+ if ( TimerOn ) {
+ del_timer ( &PollTimer );
+ TimerOn = 0;
+ }
+
+ /* Reset the boards we have. */
+ for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ if ( i2BoardPtrTable[i] ) {
+ iiReset( i2BoardPtrTable[i] );
+ }
+ }
+
+ /* The following is done at most once, if any boards were installed. */
+ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ if ( i2BoardPtrTable[i] ) {
+ iiResetDelay( i2BoardPtrTable[i] );
+ /* free io addresses and Tibet */
+ release_region( ip2config.addr[i], 8 );
+ class_device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i));
+ devfs_remove("ip2/ipl%d", i);
+ class_device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i + 1));
+ devfs_remove("ip2/stat%d", i);
+ }
+ /* Disable and remove interrupt handler. */
+ if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) {
+ free_irq ( ip2config.irq[i], (void *)&pcName);
+ clear_requested_irq( ip2config.irq[i]);
+ }
+ }
+ class_destroy(ip2_class);
+ devfs_remove("ip2");
+ if ( ( err = tty_unregister_driver ( ip2_tty_driver ) ) ) {
+ printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err);
+ }
+ put_tty_driver(ip2_tty_driver);
+ if ( ( err = unregister_chrdev ( IP2_IPL_MAJOR, pcIpl ) ) ) {
+ printk(KERN_ERR "IP2: failed to unregister IPL driver (%d)\n", err);
+ }
+ remove_proc_entry("ip2mem", &proc_root);
+
+ // free memory
+ for (i = 0; i < IP2_MAX_BOARDS; i++) {
+ void *pB;
+#ifdef CONFIG_PCI
+ if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) {
+ pci_disable_device(ip2config.pci_dev[i]);
+ ip2config.pci_dev[i] = NULL;
+ }
+#endif
+ if ((pB = i2BoardPtrTable[i]) != 0 ) {
+ kfree ( pB );
+ i2BoardPtrTable[i] = NULL;
+ }
+ if ((DevTableMem[i]) != NULL ) {
+ kfree ( DevTableMem[i] );
+ DevTableMem[i] = NULL;
+ }
+ }
+
+ /* Cleanup the iiEllis subsystem. */
+ iiEllisCleanup();
+#ifdef IP2DEBUG_INIT
+ printk (KERN_DEBUG "IP2 Unloaded\n" );
+#endif
+}
+#endif /* MODULE */
+
+static struct tty_operations ip2_ops = {
+ .open = ip2_open,
+ .close = ip2_close,
+ .write = ip2_write,
+ .put_char = ip2_putchar,
+ .flush_chars = ip2_flush_chars,
+ .write_room = ip2_write_room,
+ .chars_in_buffer = ip2_chars_in_buf,
+ .flush_buffer = ip2_flush_buffer,
+ .ioctl = ip2_ioctl,
+ .throttle = ip2_throttle,
+ .unthrottle = ip2_unthrottle,
+ .set_termios = ip2_set_termios,
+ .set_ldisc = ip2_set_line_discipline,
+ .stop = ip2_stop,
+ .start = ip2_start,
+ .hangup = ip2_hangup,
+ .read_proc = ip2_read_proc,
+ .tiocmget = ip2_tiocmget,
+ .tiocmset = ip2_tiocmset,
+};
+
+/******************************************************************************/
+/* Function: ip2_loadmain() */
+/* Parameters: irq, io from command line of insmod et. al. */
+/* pointer to fip firmware and firmware size for boards */
+/* Returns: Success (0) */
+/* */
+/* Description: */
+/* This was the required entry point for all drivers (now in ip2.c) */
+/* It performs all */
+/* initialisation of the devices and driver structures, and registers itself */
+/* with the relevant kernel modules. */
+/******************************************************************************/
+/* SA_INTERRUPT- if set blocks all interrupts else only this line */
+/* SA_SHIRQ - for shared irq PCI or maybe EISA only */
+/* SA_RANDOM - can be source for cert. random number generators */
+#define IP2_SA_FLAGS 0
+
+int
+ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize)
+{
+ int i, j, box;
+ int err = 0;
+ int status = 0;
+ static int loaded;
+ i2eBordStrPtr pB = NULL;
+ int rc = -1;
+
+ ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0 );
+
+ /* process command line arguments to modprobe or
+ insmod i.e. iop & irqp */
+ /* irqp and iop should ALWAYS be specified now... But we check
+ them individually just to be sure, anyways... */
+ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ if (iop) {
+ ip2config.addr[i] = iop[i];
+ if (irqp) {
+ if( irqp[i] >= 0 ) {
+ ip2config.irq[i] = irqp[i];
+ } else {
+ ip2config.irq[i] = 0;
+ }
+ // This is a little bit of a hack. If poll_only=1 on command
+ // line back in ip2.c OR all IRQs on all specified boards are
+ // explicitly set to 0, then drop to poll only mode and override
+ // PCI or EISA interrupts. This superceeds the old hack of
+ // triggering if all interrupts were zero (like da default).
+ // Still a hack but less prone to random acts of terrorism.
+ //
+ // What we really should do, now that the IRQ default is set
+ // to -1, is to use 0 as a hard coded, do not probe.
+ //
+ // /\/\|=mhw=|\/\/
+ poll_only |= irqp[i];
+ }
+ }
+ }
+ poll_only = !poll_only;
+
+ Fip_firmware = firmware;
+ Fip_firmware_size = firmsize;
+
+ /* Announce our presence */
+ printk( KERN_INFO "%s version %s\n", pcName, pcVersion );
+
+ // ip2 can be unloaded and reloaded for no good reason
+ // we can't let that happen here or bad things happen
+ // second load hoses board but not system - fixme later
+ if (loaded) {
+ printk( KERN_INFO "Still loaded\n" );
+ return 0;
+ }
+ loaded++;
+
+ ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS);
+ if (!ip2_tty_driver)
+ return -ENOMEM;
+
+ /* Initialise the iiEllis subsystem. */
+ iiEllisInit();
+
+ /* Initialize arrays. */
+ memset( i2BoardPtrTable, 0, sizeof i2BoardPtrTable );
+ memset( DevTable, 0, sizeof DevTable );
+
+ /* Initialise all the boards we can find (up to the maximum). */
+ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ switch ( ip2config.addr[i] ) {
+ case 0: /* skip this slot even if card is present */
+ break;
+ default: /* ISA */
+ /* ISA address must be specified */
+ if ( (ip2config.addr[i] < 0x100) || (ip2config.addr[i] > 0x3f8) ) {
+ printk ( KERN_ERR "IP2: Bad ISA board %d address %x\n",
+ i, ip2config.addr[i] );
+ ip2config.addr[i] = 0;
+ } else {
+ ip2config.type[i] = ISA;
+
+ /* Check for valid irq argument, set for polling if invalid */
+ if (ip2config.irq[i] && !is_valid_irq(ip2config.irq[i])) {
+ printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",ip2config.irq[i]);
+ ip2config.irq[i] = 0;// 0 is polling and is valid in that sense
+ }
+ }
+ break;
+ case PCI:
+#ifdef CONFIG_PCI
+ {
+ struct pci_dev *pci_dev_i = NULL;
+ pci_dev_i = pci_find_device(PCI_VENDOR_ID_COMPUTONE,
+ PCI_DEVICE_ID_COMPUTONE_IP2EX, pci_dev_i);
+ if (pci_dev_i != NULL) {
+ unsigned int addr;
+
+ if (pci_enable_device(pci_dev_i)) {
+ printk( KERN_ERR "IP2: can't enable PCI device at %s\n",
+ pci_name(pci_dev_i));
+ break;
+ }
+ ip2config.type[i] = PCI;
+ ip2config.pci_dev[i] = pci_dev_i;
+ status =
+ pci_read_config_dword(pci_dev_i, PCI_BASE_ADDRESS_1, &addr);
+ if ( addr & 1 ) {
+ ip2config.addr[i]=(USHORT)(addr&0xfffe);
+ } else {
+ printk( KERN_ERR "IP2: PCI I/O address error\n");
+ }
+
+// If the PCI BIOS assigned it, lets try and use it. If we
+// can't acquire it or it screws up, deal with it then.
+
+// if (!is_valid_irq(pci_irq)) {
+// printk( KERN_ERR "IP2: Bad PCI BIOS IRQ(%d)\n",pci_irq);
+// pci_irq = 0;
+// }
+ ip2config.irq[i] = pci_dev_i->irq;
+ } else { // ann error
+ ip2config.addr[i] = 0;
+ if (status == PCIBIOS_DEVICE_NOT_FOUND) {
+ printk( KERN_ERR "IP2: PCI board %d not found\n", i );
+ } else {
+ printk( KERN_ERR "IP2: PCI error 0x%x \n", status );
+ }
+ }
+ }
+#else
+ printk( KERN_ERR "IP2: PCI card specified but PCI support not\n");
+ printk( KERN_ERR "IP2: configured in this kernel.\n");
+ printk( KERN_ERR "IP2: Recompile kernel with CONFIG_PCI defined!\n");
+#endif /* CONFIG_PCI */
+ break;
+ case EISA:
+ if ( (ip2config.addr[i] = find_eisa_board( Eisa_slot + 1 )) != 0) {
+ /* Eisa_irq set as side effect, boo */
+ ip2config.type[i] = EISA;
+ }
+ ip2config.irq[i] = Eisa_irq;
+ break;
+ } /* switch */
+ } /* for */
+ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ if ( ip2config.addr[i] ) {
+ pB = kmalloc( sizeof(i2eBordStr), GFP_KERNEL);
+ if ( pB != NULL ) {
+ i2BoardPtrTable[i] = pB;
+ memset( pB, 0, sizeof(i2eBordStr) );
+ iiSetAddress( pB, ip2config.addr[i], ii2DelayTimer );
+ iiReset( pB );
+ } else {
+ printk(KERN_ERR "IP2: board memory allocation error\n");
+ }
+ }
+ }
+ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ if ( ( pB = i2BoardPtrTable[i] ) != NULL ) {
+ iiResetDelay( pB );
+ break;
+ }
+ }
+ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ if ( i2BoardPtrTable[i] != NULL ) {
+ ip2_init_board( i );
+ }
+ }
+
+ ip2trace (ITRC_NO_PORT, ITRC_INIT, 2, 0 );
+
+ ip2_tty_driver->owner = THIS_MODULE;
+ ip2_tty_driver->name = "ttyF";
+ ip2_tty_driver->devfs_name = "tts/F";
+ ip2_tty_driver->driver_name = pcDriver_name;
+ ip2_tty_driver->major = IP2_TTY_MAJOR;
+ ip2_tty_driver->minor_start = 0;
+ ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
+ ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL;
+ ip2_tty_driver->init_termios = tty_std_termios;
+ ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
+ ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+ tty_set_operations(ip2_tty_driver, &ip2_ops);
+
+ ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 );
+
+ /* Register the tty devices. */
+ if ( ( err = tty_register_driver ( ip2_tty_driver ) ) ) {
+ printk(KERN_ERR "IP2: failed to register tty driver (%d)\n", err);
+ put_tty_driver(ip2_tty_driver);
+ return -EINVAL;
+ } else
+ /* Register the IPL driver. */
+ if ( ( err = register_chrdev ( IP2_IPL_MAJOR, pcIpl, &ip2_ipl ) ) ) {
+ printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", err );
+ } else {
+ /* create the sysfs class */
+ ip2_class = class_create(THIS_MODULE, "ip2");
+ if (IS_ERR(ip2_class)) {
+ err = PTR_ERR(ip2_class);
+ goto out_chrdev;
+ }
+ }
+ /* Register the read_procmem thing */
+ if (!create_proc_info_entry("ip2mem",0,&proc_root,ip2_read_procmem)) {
+ printk(KERN_ERR "IP2: failed to register read_procmem\n");
+ } else {
+
+ ip2trace (ITRC_NO_PORT, ITRC_INIT, 4, 0 );
+ /* Register the interrupt handler or poll handler, depending upon the
+ * specified interrupt.
+ */
+
+ for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ if ( 0 == ip2config.addr[i] ) {
+ continue;
+ }
+
+ if ( NULL != ( pB = i2BoardPtrTable[i] ) ) {
+ class_device_create(ip2_class, NULL,
+ MKDEV(IP2_IPL_MAJOR, 4 * i),
+ NULL, "ipl%d", i);
+ err = devfs_mk_cdev(MKDEV(IP2_IPL_MAJOR, 4 * i),
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IFCHR,
+ "ip2/ipl%d", i);
+ if (err) {
+ class_device_destroy(ip2_class,
+ MKDEV(IP2_IPL_MAJOR, 4 * i));
+ goto out_class;
+ }
+
+ class_device_create(ip2_class, NULL,
+ MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
+ NULL, "stat%d", i);
+ err = devfs_mk_cdev(MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IFCHR,
+ "ip2/stat%d", i);
+ if (err) {
+ class_device_destroy(ip2_class,
+ MKDEV(IP2_IPL_MAJOR, 4 * i + 1));
+ goto out_class;
+ }
+
+ for ( box = 0; box < ABS_MAX_BOXES; ++box )
+ {
+ for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
+ {
+ if ( pB->i2eChannelMap[box] & (1 << j) )
+ {
+ tty_register_device(ip2_tty_driver,
+ j + ABS_BIGGEST_BOX *
+ (box+i*ABS_MAX_BOXES), NULL);
+ }
+ }
+ }
+ }
+
+ if (poll_only) {
+// Poll only forces driver to only use polling and
+// to ignore the probed PCI or EISA interrupts.
+ ip2config.irq[i] = CIR_POLL;
+ }
+ if ( ip2config.irq[i] == CIR_POLL ) {
+retry:
+ if (!TimerOn) {
+ PollTimer.expires = POLL_TIMEOUT;
+ add_timer ( &PollTimer );
+ TimerOn = 1;
+ printk( KERN_INFO "IP2: polling\n");
+ }
+ } else {
+ if (have_requested_irq(ip2config.irq[i]))
+ continue;
+ rc = request_irq( ip2config.irq[i], ip2_interrupt,
+ IP2_SA_FLAGS | (ip2config.type[i] == PCI ? SA_SHIRQ : 0),
+ pcName, (void *)&pcName);
+ if (rc) {
+ printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc);
+ ip2config.irq[i] = CIR_POLL;
+ printk( KERN_INFO "IP2: Polling %ld/sec.\n",
+ (POLL_TIMEOUT - jiffies));
+ goto retry;
+ }
+ mark_requested_irq(ip2config.irq[i]);
+ /* Initialise the interrupt handler bottom half (aka slih). */
+ }
+ }
+ for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ if ( i2BoardPtrTable[i] ) {
+ set_irq( i, ip2config.irq[i] ); /* set and enable board interrupt */
+ }
+ }
+ }
+ ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0 );
+ goto out;
+
+out_class:
+ class_destroy(ip2_class);
+out_chrdev:
+ unregister_chrdev(IP2_IPL_MAJOR, "ip2");
+out:
+ return err;
+}
+
+EXPORT_SYMBOL(ip2_loadmain);
+
+/******************************************************************************/
+/* Function: ip2_init_board() */
+/* Parameters: Index of board in configuration structure */
+/* Returns: Success (0) */
+/* */
+/* Description: */
+/* This function initializes the specified board. The loadware is copied to */
+/* the board, the channel structures are initialized, and the board details */
+/* are reported on the console. */
+/******************************************************************************/
+static void __init
+ip2_init_board( int boardnum )
+{
+ int i;
+ int nports = 0, nboxes = 0;
+ i2ChanStrPtr pCh;
+ i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
+
+ if ( !iiInitialize ( pB ) ) {
+ printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n",
+ pB->i2eBase, pB->i2eError );
+ goto err_initialize;
+ }
+ printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1,
+ ip2config.addr[boardnum], ip2config.irq[boardnum] );
+
+ if (!request_region( ip2config.addr[boardnum], 8, pcName )) {
+ printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]);
+ goto err_initialize;
+ }
+
+ if ( iiDownloadAll ( pB, (loadHdrStrPtr)Fip_firmware, 1, Fip_firmware_size )
+ != II_DOWN_GOOD ) {
+ printk ( KERN_ERR "IP2: failed to download loadware\n" );
+ goto err_release_region;
+ } else {
+ printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n",
+ pB->i2ePom.e.porVersion,
+ pB->i2ePom.e.porRevision,
+ pB->i2ePom.e.porSubRev, pB->i2eLVersion,
+ pB->i2eLRevision, pB->i2eLSub );
+ }
+
+ switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) {
+
+ default:
+ printk( KERN_ERR "IP2: Unknown board type, ID = %x\n",
+ pB->i2ePom.e.porID );
+ nports = 0;
+ goto err_release_region;
+ break;
+
+ case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */
+ printk ( KERN_INFO "IP2: ISA-4\n" );
+ nports = 4;
+ break;
+
+ case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */
+ printk ( KERN_INFO "IP2: ISA-8 std\n" );
+ nports = 8;
+ break;
+
+ case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */
+ printk ( KERN_INFO "IP2: ISA-8 RJ11\n" );
+ nports = 8;
+ break;
+
+ case POR_ID_FIIEX: /* IntelliPort IIEX */
+ {
+ int portnum = IP2_PORTS_PER_BOARD * boardnum;
+ int box;
+
+ for( box = 0; box < ABS_MAX_BOXES; ++box ) {
+ if ( pB->i2eChannelMap[box] != 0 ) {
+ ++nboxes;
+ }
+ for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
+ if ( pB->i2eChannelMap[box] & 1<< i ) {
+ ++nports;
+ }
+ }
+ }
+ DevTableMem[boardnum] = pCh =
+ kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL );
+ if ( !pCh ) {
+ printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
+ goto err_release_region;
+ }
+ if ( !i2InitChannels( pB, nports, pCh ) ) {
+ printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
+ kfree ( pCh );
+ goto err_release_region;
+ }
+ pB->i2eChannelPtr = &DevTable[portnum];
+ pB->i2eChannelCnt = ABS_MOST_PORTS;
+
+ for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) {
+ for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
+ if ( pB->i2eChannelMap[box] & (1 << i) ) {
+ DevTable[portnum + i] = pCh;
+ pCh->port_index = portnum + i;
+ pCh++;
+ }
+ }
+ }
+ printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n",
+ nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 );
+ }
+ goto ex_exit;
+ }
+ DevTableMem[boardnum] = pCh =
+ kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL );
+ if ( !pCh ) {
+ printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
+ goto err_release_region;
+ }
+ pB->i2eChannelPtr = pCh;
+ pB->i2eChannelCnt = nports;
+ if ( !i2InitChannels( pB, nports, pCh ) ) {
+ printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
+ kfree ( pCh );
+ goto err_release_region;
+ }
+ pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum];
+
+ for( i = 0; i < pB->i2eChannelCnt; ++i ) {
+ DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh;
+ pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i;
+ pCh++;
+ }
+ex_exit:
+ INIT_WORK(&pB->tqueue_interrupt, (void(*)(void*)) ip2_interrupt_bh, pB);
+ return;
+
+err_release_region:
+ release_region(ip2config.addr[boardnum], 8);
+err_initialize:
+ kfree ( pB );
+ i2BoardPtrTable[boardnum] = NULL;
+ return;
+}
+
+/******************************************************************************/
+/* Function: find_eisa_board ( int start_slot ) */
+/* Parameters: First slot to check */
+/* Returns: Address of EISA IntelliPort II controller */
+/* */
+/* Description: */
+/* This function searches for an EISA IntelliPort controller, starting */
+/* from the specified slot number. If the motherboard is not identified as an */
+/* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */
+/* it returns the base address of the controller. */
+/******************************************************************************/
+static unsigned short __init
+find_eisa_board( int start_slot )
+{
+ int i, j;
+ unsigned int idm = 0;
+ unsigned int idp = 0;
+ unsigned int base = 0;
+ unsigned int value;
+ int setup_address;
+ int setup_irq;
+ int ismine = 0;
+
+ /*
+ * First a check for an EISA motherboard, which we do by comparing the
+ * EISA ID registers for the system board and the first couple of slots.
+ * No slot ID should match the system board ID, but on an ISA or PCI
+ * machine the odds are that an empty bus will return similar values for
+ * each slot.
+ */
+ i = 0x0c80;
+ value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3);
+ for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) {
+ j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3);
+ if ( value == j )
+ return 0;
+ }
+
+ /*
+ * OK, so we are inclined to believe that this is an EISA machine. Find
+ * an IntelliPort controller.
+ */
+ for( i = start_slot; i < 16; i++ ) {
+ base = i << 12;
+ idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff);
+ idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff);
+ ismine = 0;
+ if ( idm == 0x0e8e ) {
+ if ( idp == 0x0281 || idp == 0x0218 ) {
+ ismine = 1;
+ } else if ( idp == 0x0282 || idp == 0x0283 ) {
+ ismine = 3; /* Can do edge-trigger */
+ }
+ if ( ismine ) {
+ Eisa_slot = i;
+ break;
+ }
+ }
+ }
+ if ( !ismine )
+ return 0;
+
+ /* It's some sort of EISA card, but at what address is it configured? */
+
+ setup_address = base + 0xc88;
+ value = inb(base + 0xc86);
+ setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0;
+
+ if ( (ismine & 2) && !(value & 0x10) ) {
+ ismine = 1; /* Could be edging, but not */
+ }
+
+ if ( Eisa_irq == 0 ) {
+ Eisa_irq = setup_irq;
+ } else if ( Eisa_irq != setup_irq ) {
+ printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" );
+ }
+
+#ifdef IP2DEBUG_INIT
+printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x",
+ base >> 12, idm, idp, setup_address);
+ if ( Eisa_irq ) {
+ printk(KERN_DEBUG ", Interrupt %d %s\n",
+ setup_irq, (ismine & 2) ? "(edge)" : "(level)");
+ } else {
+ printk(KERN_DEBUG ", (polled)\n");
+ }
+#endif
+ return setup_address;
+}
+
+/******************************************************************************/
+/* Function: set_irq() */
+/* Parameters: index to board in board table */
+/* IRQ to use */
+/* Returns: Success (0) */
+/* */
+/* Description: */
+/******************************************************************************/
+static void
+set_irq( int boardnum, int boardIrq )
+{
+ unsigned char tempCommand[16];
+ i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
+ unsigned long flags;
+
+ /*
+ * Notify the boards they may generate interrupts. This is done by
+ * sending an in-line command to channel 0 on each board. This is why
+ * the channels have to be defined already. For each board, if the
+ * interrupt has never been defined, we must do so NOW, directly, since
+ * board will not send flow control or even give an interrupt until this
+ * is done. If polling we must send 0 as the interrupt parameter.
+ */
+
+ // We will get an interrupt here at the end of this function
+
+ iiDisableMailIrq(pB);
+
+ /* We build up the entire packet header. */
+ CHANNEL_OF(tempCommand) = 0;
+ PTYPE_OF(tempCommand) = PTYPE_INLINE;
+ CMD_COUNT_OF(tempCommand) = 2;
+ (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ;
+ (CMD_OF(tempCommand))[1] = 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);
+ iiWriteBuf(pB, tempCommand, 4);
+ WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags);
+ pB->i2eUsingIrq = boardIrq;
+ pB->i2eOutMailWaiting |= MB_OUT_STUFFED;
+
+ /* Need to update number of boards before you enable mailbox int */
+ ++i2nBoards;
+
+ CHANNEL_OF(tempCommand) = 0;
+ PTYPE_OF(tempCommand) = PTYPE_BYPASS;
+ CMD_COUNT_OF(tempCommand) = 6;
+ (CMD_OF(tempCommand))[0] = 88; // SILO
+ (CMD_OF(tempCommand))[1] = 64; // chars
+ (CMD_OF(tempCommand))[2] = 32; // ms
+
+ (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK
+ (CMD_OF(tempCommand))[4] = 64; // chars
+
+ (CMD_OF(tempCommand))[5] = 87; // HW_TEST
+ WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags);
+ iiWriteBuf(pB, tempCommand, 8);
+ WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags);
+
+ CHANNEL_OF(tempCommand) = 0;
+ PTYPE_OF(tempCommand) = PTYPE_BYPASS;
+ CMD_COUNT_OF(tempCommand) = 1;
+ (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */
+ iiWriteBuf(pB, tempCommand, 3);
+
+#ifdef XXX
+ // enable heartbeat for test porpoises
+ CHANNEL_OF(tempCommand) = 0;
+ PTYPE_OF(tempCommand) = PTYPE_BYPASS;
+ 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);
+ iiWriteBuf(pB, tempCommand, 4);
+ WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags);
+#endif
+
+ iiEnableMailIrq(pB);
+ iiSendPendingMail(pB);
+}
+
+/******************************************************************************/
+/* Interrupt Handler Section */
+/******************************************************************************/
+
+static inline void
+service_all_boards(void)
+{
+ int i;
+ i2eBordStrPtr pB;
+
+ /* Service every board on the list */
+ for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ pB = i2BoardPtrTable[i];
+ if ( pB ) {
+ i2ServiceBoard( pB );
+ }
+ }
+}
+
+
+/******************************************************************************/
+/* Function: ip2_interrupt_bh(pB) */
+/* Parameters: pB - pointer to the board structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* Service the board in a bottom half interrupt handler and then */
+/* reenable the board's interrupts if it has an IRQ number */
+/* */
+/******************************************************************************/
+static void
+ip2_interrupt_bh(i2eBordStrPtr pB)
+{
+// pB better well be set or we have a problem! We can only get
+// here from the IMMEDIATE queue. Here, we process the boards.
+// Checking pB doesn't cost much and it saves us from the sanity checkers.
+
+ bh_counter++;
+
+ if ( pB ) {
+ i2ServiceBoard( pB );
+ if( pB->i2eUsingIrq ) {
+// Re-enable his interrupts
+ iiEnableMailIrq(pB);
+ }
+ }
+}
+
+
+/******************************************************************************/
+/* Function: ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs) */
+/* Parameters: irq - interrupt number */
+/* pointer to optional device ID structure */
+/* pointer to register structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* */
+/* Our task here is simply to identify each board which needs servicing. */
+/* If we are queuing then, queue it to be serviced, and disable its irq */
+/* mask otherwise process the board directly. */
+/* */
+/* We could queue by IRQ but that just complicates things on both ends */
+/* with very little gain in performance (how many instructions does */
+/* it take to iterate on the immediate queue). */
+/* */
+/* */
+/******************************************************************************/
+static irqreturn_t
+ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+ int i;
+ i2eBordStrPtr pB;
+ int handled = 0;
+
+ ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, irq );
+
+ /* Service just the boards on the list using this irq */
+ for( i = 0; i < i2nBoards; ++i ) {
+ pB = i2BoardPtrTable[i];
+
+// Only process those boards which match our IRQ.
+// IRQ = 0 for polled boards, we won't poll "IRQ" boards
+
+ if ( pB && (pB->i2eUsingIrq == irq) ) {
+ handled = 1;
+#ifdef USE_IQI
+
+ if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) {
+// Disable his interrupt (will be enabled when serviced)
+// This is mostly to protect from reentrancy.
+ iiDisableMailIrq(pB);
+
+// Park the board on the immediate queue for processing.
+ schedule_work(&pB->tqueue_interrupt);
+
+// Make sure the immediate queue is flagged to fire.
+ }
+#else
+// We are using immediate servicing here. This sucks and can
+// cause all sorts of havoc with ppp and others. The failsafe
+// check on iiSendPendingMail could also throw a hairball.
+ i2ServiceBoard( pB );
+#endif /* USE_IQI */
+ }
+ }
+
+ ++irq_counter;
+
+ ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
+ return IRQ_RETVAL(handled);
+}
+
+/******************************************************************************/
+/* Function: ip2_poll(unsigned long arg) */
+/* Parameters: ? */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* This function calls the library routine i2ServiceBoard for each board in */
+/* the board table. This is used instead of the interrupt routine when polled */
+/* mode is specified. */
+/******************************************************************************/
+static void
+ip2_poll(unsigned long arg)
+{
+ ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 );
+
+ TimerOn = 0; // it's the truth but not checked in service
+
+ // Just polled boards, IRQ = 0 will hit all non-interrupt boards.
+ // It will NOT poll boards handled by hard interrupts.
+ // The issue of queued BH interrups is handled in ip2_interrupt().
+ ip2_interrupt(0, NULL, NULL);
+
+ PollTimer.expires = POLL_TIMEOUT;
+ add_timer( &PollTimer );
+ TimerOn = 1;
+
+ ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
+}
+
+static void do_input(void *p)
+{
+ i2ChanStrPtr pCh = p;
+ unsigned long flags;
+
+ ip2trace(CHANN, ITRC_INPUT, 21, 0 );
+
+ // Data input
+ if ( pCh->pTTY != NULL ) {
+ READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags)
+ if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) {
+ READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags)
+ i2Input( pCh );
+ } else
+ READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags)
+ } else {
+ ip2trace(CHANN, ITRC_INPUT, 22, 0 );
+
+ i2InputFlush( pCh );
+ }
+}
+
+// code duplicated from n_tty (ldisc)
+static inline void isig(int sig, struct tty_struct *tty, int flush)
+{
+ if (tty->pgrp > 0)
+ kill_pg(tty->pgrp, sig, 1);
+ if (flush || !L_NOFLSH(tty)) {
+ if ( tty->ldisc.flush_buffer )
+ tty->ldisc.flush_buffer(tty);
+ i2InputFlush( tty->driver_data );
+ }
+}
+
+static void do_status(void *p)
+{
+ i2ChanStrPtr pCh = p;
+ int status;
+
+ status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) );
+
+ ip2trace (CHANN, ITRC_STATUS, 21, 1, status );
+
+ if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) {
+ if ( (status & I2_BRK) ) {
+ // code duplicated from n_tty (ldisc)
+ if (I_IGNBRK(pCh->pTTY))
+ goto skip_this;
+ if (I_BRKINT(pCh->pTTY)) {
+ isig(SIGINT, pCh->pTTY, 1);
+ goto skip_this;
+ }
+ wake_up_interruptible(&pCh->pTTY->read_wait);
+ }
+#ifdef NEVER_HAPPENS_AS_SETUP_XXX
+ // and can't work because we don't know the_char
+ // as the_char is reported on a separate path
+ // The intelligent board does this stuff as setup
+ {
+ char brkf = TTY_NORMAL;
+ unsigned char brkc = '\0';
+ unsigned char tmp;
+ if ( (status & I2_BRK) ) {
+ brkf = TTY_BREAK;
+ brkc = '\0';
+ }
+ else if (status & I2_PAR) {
+ brkf = TTY_PARITY;
+ brkc = the_char;
+ } else if (status & I2_FRA) {
+ brkf = TTY_FRAME;
+ brkc = the_char;
+ } else if (status & I2_OVR) {
+ brkf = TTY_OVERRUN;
+ brkc = the_char;
+ }
+ tmp = pCh->pTTY->real_raw;
+ pCh->pTTY->real_raw = 0;
+ pCh->pTTY->ldisc.receive_buf( pCh->pTTY, &brkc, &brkf, 1 );
+ pCh->pTTY->real_raw = tmp;
+ }
+#endif /* NEVER_HAPPENS_AS_SETUP_XXX */
+ }
+skip_this:
+
+ if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) {
+ wake_up_interruptible(&pCh->delta_msr_wait);
+
+ if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) {
+ if ( status & I2_DCD ) {
+ if ( pCh->wopen ) {
+ wake_up_interruptible ( &pCh->open_wait );
+ }
+ } else {
+ if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) {
+ tty_hangup( pCh->pTTY );
+ }
+ }
+ }
+ }
+
+ ip2trace (CHANN, ITRC_STATUS, 26, 0 );
+}
+
+/******************************************************************************/
+/* Device Open/Close/Ioctl Entry Point Section */
+/******************************************************************************/
+
+/******************************************************************************/
+/* Function: open_sanity_check() */
+/* Parameters: Pointer to tty structure */
+/* Pointer to file structure */
+/* Returns: Success or failure */
+/* */
+/* Description: */
+/* Verifies the structure magic numbers and cross links. */
+/******************************************************************************/
+#ifdef IP2DEBUG_OPEN
+static void
+open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd )
+{
+ if ( pBrd->i2eValid != I2E_MAGIC ) {
+ printk(KERN_ERR "IP2: invalid board structure\n" );
+ } else if ( pBrd != pCh->pMyBord ) {
+ printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n",
+ pCh->pMyBord );
+ } else if ( pBrd->i2eChannelCnt < pCh->port_index ) {
+ printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index );
+ } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) {
+ } else {
+ printk(KERN_INFO "IP2: all pointers check out!\n" );
+ }
+}
+#endif
+
+
+/******************************************************************************/
+/* Function: ip2_open() */
+/* Parameters: Pointer to tty structure */
+/* Pointer to file structure */
+/* Returns: Success or failure */
+/* */
+/* Description: (MANDATORY) */
+/* A successful device open has to run a gauntlet of checks before it */
+/* completes. After some sanity checking and pointer setup, the function */
+/* blocks until all conditions are satisfied. It then initialises the port to */
+/* the default characteristics and returns. */
+/******************************************************************************/
+static int
+ip2_open( PTTY tty, struct file *pFile )
+{
+ wait_queue_t wait;
+ int rc = 0;
+ int do_clocal = 0;
+ i2ChanStrPtr pCh = DevTable[tty->index];
+
+ ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 );
+
+ if ( pCh == NULL ) {
+ return -ENODEV;
+ }
+ /* Setup pointer links in device and tty structures */
+ pCh->pTTY = tty;
+ tty->driver_data = pCh;
+
+#ifdef IP2DEBUG_OPEN
+ printk(KERN_DEBUG \
+ "IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n",
+ tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index);
+ open_sanity_check ( pCh, pCh->pMyBord );
+#endif
+
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP);
+ pCh->dataSetOut |= (I2_DTR | I2_RTS);
+ serviceOutgoingFifo( pCh->pMyBord );
+
+ /* Block here until the port is ready (per serial and istallion) */
+ /*
+ * 1. If the port is in the middle of closing wait for the completion
+ * and then return the appropriate error.
+ */
+ init_waitqueue_entry(&wait, current);
+ add_wait_queue(&pCh->close_wait, &wait);
+ set_current_state( TASK_INTERRUPTIBLE );
+
+ if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) {
+ if ( pCh->flags & ASYNC_CLOSING ) {
+ schedule();
+ }
+ if ( tty_hung_up_p(pFile) ) {
+ set_current_state( TASK_RUNNING );
+ remove_wait_queue(&pCh->close_wait, &wait);
+ return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS;
+ }
+ }
+ set_current_state( TASK_RUNNING );
+ remove_wait_queue(&pCh->close_wait, &wait);
+
+ /*
+ * 3. Handle a non-blocking open of a normal port.
+ */
+ if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) {
+ pCh->flags |= ASYNC_NORMAL_ACTIVE;
+ goto noblock;
+ }
+ /*
+ * 4. Now loop waiting for the port to be free and carrier present
+ * (if required).
+ */
+ if ( tty->termios->c_cflag & CLOCAL )
+ do_clocal = 1;
+
+#ifdef IP2DEBUG_OPEN
+ printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal);
+#endif
+
+ ++pCh->wopen;
+
+ init_waitqueue_entry(&wait, current);
+ add_wait_queue(&pCh->open_wait, &wait);
+
+ for(;;) {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
+ pCh->dataSetOut |= (I2_DTR | I2_RTS);
+ set_current_state( TASK_INTERRUPTIBLE );
+ serviceOutgoingFifo( pCh->pMyBord );
+ if ( tty_hung_up_p(pFile) ) {
+ set_current_state( TASK_RUNNING );
+ remove_wait_queue(&pCh->open_wait, &wait);
+ return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS;
+ }
+ if (!(pCh->flags & ASYNC_CLOSING) &&
+ (do_clocal || (pCh->dataSetIn & I2_DCD) )) {
+ rc = 0;
+ break;
+ }
+
+#ifdef IP2DEBUG_OPEN
+ printk(KERN_DEBUG "ASYNC_CLOSING = %s\n",
+ (pCh->flags & ASYNC_CLOSING)?"True":"False");
+ printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n");
+#endif
+ ip2trace (CHANN, ITRC_OPEN, 3, 2, 0,
+ (pCh->flags & ASYNC_CLOSING) );
+ /* check for signal */
+ if (signal_pending(current)) {
+ rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS);
+ break;
+ }
+ schedule();
+ }
+ set_current_state( TASK_RUNNING );
+ remove_wait_queue(&pCh->open_wait, &wait);
+
+ --pCh->wopen; //why count?
+
+ ip2trace (CHANN, ITRC_OPEN, 4, 0 );
+
+ if (rc != 0 ) {
+ return rc;
+ }
+ pCh->flags |= ASYNC_NORMAL_ACTIVE;
+
+noblock:
+
+ /* first open - Assign termios structure to port */
+ if ( tty->count == 1 ) {
+ i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
+ /* Now we must send the termios settings to the loadware */
+ set_params( pCh, NULL );
+ }
+
+ /*
+ * Now set any i2lib options. These may go away if the i2lib code ends
+ * up rolled into the mainline.
+ */
+ pCh->channelOptions |= CO_NBLOCK_WRITE;
+
+#ifdef IP2DEBUG_OPEN
+ printk (KERN_DEBUG "IP2: open completed\n" );
+#endif
+ serviceOutgoingFifo( pCh->pMyBord );
+
+ ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 );
+
+ return 0;
+}
+
+/******************************************************************************/
+/* Function: ip2_close() */
+/* Parameters: Pointer to tty structure */
+/* Pointer to file structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static void
+ip2_close( PTTY tty, struct file *pFile )
+{
+ i2ChanStrPtr pCh = tty->driver_data;
+
+ if ( !pCh ) {
+ return;
+ }
+
+ ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 );
+
+#ifdef IP2DEBUG_OPEN
+ printk(KERN_DEBUG "IP2:close %s:\n",tty->name);
+#endif
+
+ if ( tty_hung_up_p ( pFile ) ) {
+
+ ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 );
+
+ return;
+ }
+ if ( tty->count > 1 ) { /* not the last close */
+
+ ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 );
+
+ return;
+ }
+ pCh->flags |= ASYNC_CLOSING; // last close actually
+
+ tty->closing = 1;
+
+ if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) {
+ /*
+ * Before we drop DTR, make sure the transmitter has completely drained.
+ * This uses an timeout, after which the close
+ * completes.
+ */
+ ip2_wait_until_sent(tty, pCh->ClosingWaitTime );
+ }
+ /*
+ * At this point we stop accepting input. Here we flush the channel
+ * input buffer which will allow the board to send up more data. Any
+ * additional input is tossed at interrupt/poll time.
+ */
+ i2InputFlush( pCh );
+
+ /* disable DSS reporting */
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 4,
+ CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
+ if ( !tty || (tty->termios->c_cflag & HUPCL) ) {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
+ pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
+ i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
+ }
+
+ serviceOutgoingFifo ( pCh->pMyBord );
+
+ if ( tty->driver->flush_buffer )
+ tty->driver->flush_buffer(tty);
+ if ( tty->ldisc.flush_buffer )
+ tty->ldisc.flush_buffer(tty);
+ tty->closing = 0;
+
+ pCh->pTTY = NULL;
+
+ if (pCh->wopen) {
+ if (pCh->ClosingDelay) {
+ msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay));
+ }
+ wake_up_interruptible(&pCh->open_wait);
+ }
+
+ pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
+ wake_up_interruptible(&pCh->close_wait);
+
+#ifdef IP2DEBUG_OPEN
+ DBG_CNT("ip2_close: after wakeups--");
+#endif
+
+
+ ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 );
+
+ return;
+}
+
+/******************************************************************************/
+/* Function: ip2_hangup() */
+/* Parameters: Pointer to tty structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static void
+ip2_hangup ( PTTY tty )
+{
+ i2ChanStrPtr pCh = tty->driver_data;
+
+ if( !pCh ) {
+ return;
+ }
+
+ ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 );
+
+ ip2_flush_buffer(tty);
+
+ /* disable DSS reporting */
+
+ i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP);
+ i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
+ if ( (tty->termios->c_cflag & HUPCL) ) {
+ i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN);
+ pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
+ i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
+ }
+ i2QueueCommands(PTYPE_INLINE, pCh, 1, 3,
+ CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
+ serviceOutgoingFifo ( pCh->pMyBord );
+
+ wake_up_interruptible ( &pCh->delta_msr_wait );
+
+ pCh->flags &= ~ASYNC_NORMAL_ACTIVE;
+ pCh->pTTY = NULL;
+ wake_up_interruptible ( &pCh->open_wait );
+
+ ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 );
+}
+
+/******************************************************************************/
+/******************************************************************************/
+/* Device Output Section */
+/******************************************************************************/
+/******************************************************************************/
+
+/******************************************************************************/
+/* Function: ip2_write() */
+/* Parameters: Pointer to tty structure */
+/* Flag denoting data is in user (1) or kernel (0) space */
+/* Pointer to data */
+/* Number of bytes to write */
+/* Returns: Number of bytes actually written */
+/* */
+/* Description: (MANDATORY) */
+/* */
+/* */
+/******************************************************************************/
+static int
+ip2_write( PTTY tty, const unsigned char *pData, int count)
+{
+ i2ChanStrPtr pCh = tty->driver_data;
+ int bytesSent = 0;
+ unsigned long flags;
+
+ ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 );
+
+ /* Flush out any buffered data left over from ip2_putchar() calls. */
+ ip2_flush_chars( tty );
+
+ /* This is the actual move bit. Make sure it does what we need!!!!! */
+ WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
+ bytesSent = i2Output( pCh, pData, count, 0 );
+ WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+
+ ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent );
+
+ return bytesSent > 0 ? bytesSent : 0;
+}
+
+/******************************************************************************/
+/* Function: ip2_putchar() */
+/* Parameters: Pointer to tty structure */
+/* Character to write */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static void
+ip2_putchar( PTTY tty, unsigned char ch )
+{
+ i2ChanStrPtr pCh = tty->driver_data;
+ unsigned long flags;
+
+// ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch );
+
+ 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);
+ ip2_flush_chars( tty );
+ } else
+ WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+
+// ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch );
+}
+
+/******************************************************************************/
+/* Function: ip2_flush_chars() */
+/* Parameters: Pointer to tty structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* */
+/******************************************************************************/
+static void
+ip2_flush_chars( PTTY tty )
+{
+ int strip;
+ i2ChanStrPtr pCh = tty->driver_data;
+ unsigned long flags;
+
+ WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
+ if ( pCh->Pbuf_stuff ) {
+
+// ip2trace (CHANN, ITRC_PUTC, 10, 1, strip );
+
+ //
+ // We may need to restart i2Output if it does not fullfill this request
+ //
+ strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff, 0 );
+ if ( strip != pCh->Pbuf_stuff ) {
+ memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip );
+ }
+ pCh->Pbuf_stuff -= strip;
+ }
+ WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+}
+
+/******************************************************************************/
+/* Function: ip2_write_room() */
+/* Parameters: Pointer to tty structure */
+/* Returns: Number of bytes that the driver can accept */
+/* */
+/* Description: */
+/* */
+/******************************************************************************/
+static int
+ip2_write_room ( PTTY tty )
+{
+ int bytesFree;
+ i2ChanStrPtr pCh = tty->driver_data;
+ unsigned long flags;
+
+ READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
+ bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff;
+ READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+
+ ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree );
+
+ return ((bytesFree > 0) ? bytesFree : 0);
+}
+
+/******************************************************************************/
+/* Function: ip2_chars_in_buf() */
+/* Parameters: Pointer to tty structure */
+/* Returns: Number of bytes queued for transmission */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static int
+ip2_chars_in_buf ( PTTY tty )
+{
+ i2ChanStrPtr pCh = tty->driver_data;
+ int rc;
+ unsigned long flags;
+
+ ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff );
+
+#ifdef IP2DEBUG_WRITE
+ printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n",
+ pCh->Obuf_char_count + pCh->Pbuf_stuff,
+ pCh->Obuf_char_count, pCh->Pbuf_stuff );
+#endif
+ 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);
+ rc += pCh->Pbuf_stuff;
+ READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+ return rc;
+}
+
+/******************************************************************************/
+/* Function: ip2_flush_buffer() */
+/* Parameters: Pointer to tty structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static void
+ip2_flush_buffer( PTTY tty )
+{
+ i2ChanStrPtr pCh = tty->driver_data;
+ unsigned long flags;
+
+ ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 );
+
+#ifdef IP2DEBUG_WRITE
+ printk (KERN_DEBUG "IP2: flush buffer\n" );
+#endif
+ WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
+ pCh->Pbuf_stuff = 0;
+ WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+ i2FlushOutput( pCh );
+ ip2_owake(tty);
+
+ ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 );
+
+}
+
+/******************************************************************************/
+/* Function: ip2_wait_until_sent() */
+/* Parameters: Pointer to tty structure */
+/* Timeout for wait. */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* This function is used in place of the normal tty_wait_until_sent, which */
+/* only waits for the driver buffers to be empty (or rather, those buffers */
+/* reported by chars_in_buffer) which doesn't work for IP2 due to the */
+/* indeterminate number of bytes buffered on the board. */
+/******************************************************************************/
+static void
+ip2_wait_until_sent ( PTTY tty, int timeout )
+{
+ int i = jiffies;
+ i2ChanStrPtr pCh = tty->driver_data;
+
+ tty_wait_until_sent(tty, timeout );
+ if ( (i = timeout - (jiffies -i)) > 0)
+ i2DrainOutput( pCh, i );
+}
+
+/******************************************************************************/
+/******************************************************************************/
+/* Device Input Section */
+/******************************************************************************/
+/******************************************************************************/
+
+/******************************************************************************/
+/* Function: ip2_throttle() */
+/* Parameters: Pointer to tty structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static void
+ip2_throttle ( PTTY tty )
+{
+ i2ChanStrPtr pCh = tty->driver_data;
+
+#ifdef IP2DEBUG_READ
+ printk (KERN_DEBUG "IP2: throttle\n" );
+#endif
+ /*
+ * Signal the poll/interrupt handlers not to forward incoming data to
+ * the line discipline. This will cause the buffers to fill up in the
+ * library and thus cause the library routines to send the flow control
+ * stuff.
+ */
+ pCh->throttled = 1;
+}
+
+/******************************************************************************/
+/* Function: ip2_unthrottle() */
+/* Parameters: Pointer to tty structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static void
+ip2_unthrottle ( PTTY tty )
+{
+ i2ChanStrPtr pCh = tty->driver_data;
+ unsigned long flags;
+
+#ifdef IP2DEBUG_READ
+ printk (KERN_DEBUG "IP2: unthrottle\n" );
+#endif
+
+ /* Pass incoming data up to the line discipline again. */
+ pCh->throttled = 0;
+ i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
+ serviceOutgoingFifo( pCh->pMyBord );
+ READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags)
+ if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) {
+ 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)
+}
+
+static void
+ip2_start ( PTTY tty )
+{
+ i2ChanStrPtr pCh = DevTable[tty->index];
+
+ i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
+ i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND);
+ i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME);
+#ifdef IP2DEBUG_WRITE
+ printk (KERN_DEBUG "IP2: start tx\n" );
+#endif
+}
+
+static void
+ip2_stop ( PTTY tty )
+{
+ i2ChanStrPtr pCh = DevTable[tty->index];
+
+ i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND);
+#ifdef IP2DEBUG_WRITE
+ printk (KERN_DEBUG "IP2: stop tx\n" );
+#endif
+}
+
+/******************************************************************************/
+/* Device Ioctl Section */
+/******************************************************************************/
+
+static int ip2_tiocmget(struct tty_struct *tty, struct file *file)
+{
+ i2ChanStrPtr pCh = DevTable[tty->index];
+#ifdef ENABLE_DSSNOW
+ wait_queue_t wait;
+#endif
+
+ if (pCh == NULL)
+ return -ENODEV;
+
+/*
+ FIXME - the following code is causing a NULL pointer dereference in
+ 2.3.51 in an interrupt handler. It's suppose to prompt the board
+ to return the DSS signal status immediately. Why doesn't it do
+ the same thing in 2.2.14?
+*/
+
+/* This thing is still busted in the 1.2.12 driver on 2.4.x
+ and even hoses the serial console so the oops can be trapped.
+ /\/\|=mhw=|\/\/ */
+
+#ifdef ENABLE_DSSNOW
+ i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW);
+
+ init_waitqueue_entry(&wait, current);
+ add_wait_queue(&pCh->dss_now_wait, &wait);
+ set_current_state( TASK_INTERRUPTIBLE );
+
+ serviceOutgoingFifo( pCh->pMyBord );
+
+ schedule();
+
+ set_current_state( TASK_RUNNING );
+ remove_wait_queue(&pCh->dss_now_wait, &wait);
+
+ if (signal_pending(current)) {
+ return -EINTR;
+ }
+#endif
+ return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0)
+ | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0)
+ | ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0)
+ | ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0)
+ | ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0)
+ | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0);
+}
+
+static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear)
+{
+ i2ChanStrPtr pCh = DevTable[tty->index];
+
+ if (pCh == NULL)
+ return -ENODEV;
+
+ if (set & TIOCM_RTS) {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP);
+ pCh->dataSetOut |= I2_RTS;
+ }
+ if (set & TIOCM_DTR) {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP);
+ pCh->dataSetOut |= I2_DTR;
+ }
+
+ if (clear & TIOCM_RTS) {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN);
+ pCh->dataSetOut &= ~I2_RTS;
+ }
+ if (clear & TIOCM_DTR) {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN);
+ pCh->dataSetOut &= ~I2_DTR;
+ }
+ serviceOutgoingFifo( pCh->pMyBord );
+ return 0;
+}
+
+/******************************************************************************/
+/* Function: ip2_ioctl() */
+/* Parameters: Pointer to tty structure */
+/* Pointer to file structure */
+/* Command */
+/* Argument */
+/* Returns: Success or failure */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static int
+ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg )
+{
+ wait_queue_t wait;
+ i2ChanStrPtr pCh = DevTable[tty->index];
+ i2eBordStrPtr pB;
+ struct async_icount cprev, cnow; /* kernel counter temps */
+ struct serial_icounter_struct __user *p_cuser;
+ int rc = 0;
+ unsigned long flags;
+ void __user *argp = (void __user *)arg;
+
+ if ( pCh == NULL )
+ return -ENODEV;
+
+ pB = pCh->pMyBord;
+
+ ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg );
+
+#ifdef IP2DEBUG_IOCTL
+ printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg );
+#endif
+
+ switch(cmd) {
+ case TIOCGSERIAL:
+
+ ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc );
+
+ rc = get_serial_info(pCh, argp);
+ if (rc)
+ return rc;
+ break;
+
+ case TIOCSSERIAL:
+
+ ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc );
+
+ rc = set_serial_info(pCh, argp);
+ if (rc)
+ return rc;
+ break;
+
+ case TCXONC:
+ rc = tty_check_change(tty);
+ if (rc)
+ return rc;
+ switch (arg) {
+ case TCOOFF:
+ //return -ENOIOCTLCMD;
+ break;
+ case TCOON:
+ //return -ENOIOCTLCMD;
+ break;
+ case TCIOFF:
+ if (STOP_CHAR(tty) != __DISABLED_CHAR) {
+ i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
+ CMD_XMIT_NOW(STOP_CHAR(tty)));
+ }
+ break;
+ case TCION:
+ if (START_CHAR(tty) != __DISABLED_CHAR) {
+ i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
+ CMD_XMIT_NOW(START_CHAR(tty)));
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+
+ case TCSBRK: /* SVID version: non-zero arg --> no break */
+ rc = tty_check_change(tty);
+
+ ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc );
+
+ if (!rc) {
+ ip2_wait_until_sent(tty,0);
+ if (!arg) {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250));
+ serviceOutgoingFifo( pCh->pMyBord );
+ }
+ }
+ break;
+
+ case TCSBRKP: /* support for POSIX tcsendbreak() */
+ rc = tty_check_change(tty);
+
+ ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc );
+
+ if (!rc) {
+ ip2_wait_until_sent(tty,0);
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
+ CMD_SEND_BRK(arg ? arg*100 : 250));
+ serviceOutgoingFifo ( pCh->pMyBord );
+ }
+ break;
+
+ case TIOCGSOFTCAR:
+
+ ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc );
+
+ rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
+ if (rc)
+ return rc;
+ break;
+
+ case TIOCSSOFTCAR:
+
+ ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc );
+
+ rc = get_user(arg,(unsigned long __user *) argp);
+ if (rc)
+ return rc;
+ tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL)
+ | (arg ? CLOCAL : 0));
+
+ break;
+
+ /*
+ * 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:
+ WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags);
+ cprev = pCh->icount; /* note the counters on entry */
+ 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);
+ add_wait_queue(&pCh->delta_msr_wait, &wait);
+ set_current_state( TASK_INTERRUPTIBLE );
+
+ serviceOutgoingFifo( pCh->pMyBord );
+ for(;;) {
+ ip2trace (CHANN, ITRC_IOCTL, 10, 0 );
+
+ schedule();
+
+ ip2trace (CHANN, ITRC_IOCTL, 11, 0 );
+
+ /* see if a signal did it */
+ if (signal_pending(current)) {
+ rc = -ERESTARTSYS;
+ break;
+ }
+ WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags);
+ cnow = pCh->icount; /* atomic copy */
+ 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 */
+ break;
+ }
+ 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)) ) {
+ rc = 0;
+ break;
+ }
+ cprev = cnow;
+ }
+ set_current_state( TASK_RUNNING );
+ remove_wait_queue(&pCh->delta_msr_wait, &wait);
+
+ i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3,
+ CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
+ if ( ! (pCh->flags & ASYNC_CHECK_CD)) {
+ i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP);
+ }
+ serviceOutgoingFifo( pCh->pMyBord );
+ return rc;
+ break;
+
+ /*
+ * 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. The controller is quite capable of counting
+ * both, but this done to preserve compatibility with the standard
+ * serial driver.
+ */
+ case TIOCGICOUNT:
+ ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc );
+
+ WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags);
+ cnow = pCh->icount;
+ 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);
+ rc = put_user(cnow.rng, &p_cuser->rng);
+ rc = put_user(cnow.dcd, &p_cuser->dcd);
+ rc = put_user(cnow.rx, &p_cuser->rx);
+ rc = put_user(cnow.tx, &p_cuser->tx);
+ rc = put_user(cnow.frame, &p_cuser->frame);
+ rc = put_user(cnow.overrun, &p_cuser->overrun);
+ rc = put_user(cnow.parity, &p_cuser->parity);
+ rc = put_user(cnow.brk, &p_cuser->brk);
+ rc = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
+ break;
+
+ /*
+ * The rest are not supported by this driver. By returning -ENOIOCTLCMD they
+ * will be passed to the line discipline for it to handle.
+ */
+ case TIOCSERCONFIG:
+ case TIOCSERGWILD:
+ case TIOCSERGETLSR:
+ case TIOCSERSWILD:
+ case TIOCSERGSTRUCT:
+ case TIOCSERGETMULTI:
+ case TIOCSERSETMULTI:
+
+ default:
+ ip2trace (CHANN, ITRC_IOCTL, 12, 0 );
+
+ rc = -ENOIOCTLCMD;
+ break;
+ }
+
+ ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 );
+
+ return rc;
+}
+
+/******************************************************************************/
+/* Function: GetSerialInfo() */
+/* Parameters: Pointer to channel structure */
+/* Pointer to old termios structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* This is to support the setserial command, and requires processing of the */
+/* standard Linux serial structure. */
+/******************************************************************************/
+static int
+get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo )
+{
+ struct serial_struct tmp;
+
+ memset ( &tmp, 0, sizeof(tmp) );
+ tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16];
+ if (BID_HAS_654(tmp.type)) {
+ tmp.type = PORT_16650;
+ } else {
+ tmp.type = PORT_CIRRUS;
+ }
+ tmp.line = pCh->port_index;
+ tmp.port = pCh->pMyBord->i2eBase;
+ tmp.irq = ip2config.irq[pCh->port_index/64];
+ tmp.flags = pCh->flags;
+ tmp.baud_base = pCh->BaudBase;
+ tmp.close_delay = pCh->ClosingDelay;
+ tmp.closing_wait = pCh->ClosingWaitTime;
+ tmp.custom_divisor = pCh->BaudDivisor;
+ return copy_to_user(retinfo,&tmp,sizeof(*retinfo));
+}
+
+/******************************************************************************/
+/* Function: SetSerialInfo() */
+/* Parameters: Pointer to channel structure */
+/* Pointer to old termios structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* This function provides support for setserial, which uses the TIOCSSERIAL */
+/* ioctl. Not all setserial parameters are relevant. If the user attempts to */
+/* change the IRQ, address or type of the port the ioctl fails. */
+/******************************************************************************/
+static int
+set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info )
+{
+ struct serial_struct ns;
+ int old_flags, old_baud_divisor;
+
+ if (copy_from_user(&ns, new_info, sizeof (ns)))
+ return -EFAULT;
+
+ /*
+ * We don't allow setserial to change IRQ, board address, type or baud
+ * base. Also line nunber as such is meaningless but we use it for our
+ * array index so it is fixed also.
+ */
+ if ( (ns.irq != ip2config.irq[pCh->port_index])
+ || ((int) ns.port != ((int) (pCh->pMyBord->i2eBase)))
+ || (ns.baud_base != pCh->BaudBase)
+ || (ns.line != pCh->port_index) ) {
+ return -EINVAL;
+ }
+
+ old_flags = pCh->flags;
+ old_baud_divisor = pCh->BaudDivisor;
+
+ if ( !capable(CAP_SYS_ADMIN) ) {
+ if ( ( ns.close_delay != pCh->ClosingDelay ) ||
+ ( (ns.flags & ~ASYNC_USR_MASK) !=
+ (pCh->flags & ~ASYNC_USR_MASK) ) ) {
+ return -EPERM;
+ }
+
+ pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) |
+ (ns.flags & ASYNC_USR_MASK);
+ pCh->BaudDivisor = ns.custom_divisor;
+ } else {
+ pCh->flags = (pCh->flags & ~ASYNC_FLAGS) |
+ (ns.flags & ASYNC_FLAGS);
+ pCh->BaudDivisor = ns.custom_divisor;
+ pCh->ClosingDelay = ns.close_delay * HZ/100;
+ pCh->ClosingWaitTime = ns.closing_wait * HZ/100;
+ }
+
+ if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) )
+ || (old_baud_divisor != pCh->BaudDivisor) ) {
+ // Invalidate speed and reset parameters
+ set_params( pCh, NULL );
+ }
+
+ return 0;
+}
+
+/******************************************************************************/
+/* Function: ip2_set_termios() */
+/* Parameters: Pointer to tty structure */
+/* Pointer to old termios structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static void
+ip2_set_termios( PTTY tty, struct termios *old_termios )
+{
+ i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data;
+
+#ifdef IP2DEBUG_IOCTL
+ printk (KERN_DEBUG "IP2: set termios %p\n", old_termios );
+#endif
+
+ set_params( pCh, old_termios );
+}
+
+/******************************************************************************/
+/* Function: ip2_set_line_discipline() */
+/* Parameters: Pointer to tty structure */
+/* Returns: Nothing */
+/* */
+/* Description: Does nothing */
+/* */
+/* */
+/******************************************************************************/
+static void
+ip2_set_line_discipline ( PTTY tty )
+{
+#ifdef IP2DEBUG_IOCTL
+ printk (KERN_DEBUG "IP2: set line discipline\n" );
+#endif
+
+ ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 );
+
+}
+
+/******************************************************************************/
+/* Function: SetLine Characteristics() */
+/* Parameters: Pointer to channel structure */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* This routine is called to update the channel structure with the new line */
+/* characteristics, and send the appropriate commands to the board when they */
+/* change. */
+/******************************************************************************/
+static void
+set_params( i2ChanStrPtr pCh, struct termios *o_tios )
+{
+ tcflag_t cflag, iflag, lflag;
+ char stop_char, start_char;
+ struct termios dummy;
+
+ lflag = pCh->pTTY->termios->c_lflag;
+ cflag = pCh->pTTY->termios->c_cflag;
+ iflag = pCh->pTTY->termios->c_iflag;
+
+ if (o_tios == NULL) {
+ dummy.c_lflag = ~lflag;
+ dummy.c_cflag = ~cflag;
+ dummy.c_iflag = ~iflag;
+ o_tios = &dummy;
+ }
+
+ {
+ switch ( cflag & CBAUD ) {
+ case B0:
+ i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
+ pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
+ i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
+ pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag);
+ goto service_it;
+ break;
+ case B38400:
+ /*
+ * This is the speed that is overloaded with all the other high
+ * speeds, depending upon the flag settings.
+ */
+ if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) {
+ pCh->speed = CBR_57600;
+ } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) {
+ pCh->speed = CBR_115200;
+ } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) {
+ pCh->speed = CBR_C1;
+ } else {
+ pCh->speed = CBR_38400;
+ }
+ break;
+ case B50: pCh->speed = CBR_50; break;
+ case B75: pCh->speed = CBR_75; break;
+ case B110: pCh->speed = CBR_110; break;
+ case B134: pCh->speed = CBR_134; break;
+ case B150: pCh->speed = CBR_150; break;
+ case B200: pCh->speed = CBR_200; break;
+ case B300: pCh->speed = CBR_300; break;
+ case B600: pCh->speed = CBR_600; break;
+ case B1200: pCh->speed = CBR_1200; break;
+ case B1800: pCh->speed = CBR_1800; break;
+ case B2400: pCh->speed = CBR_2400; break;
+ case B4800: pCh->speed = CBR_4800; break;
+ case B9600: pCh->speed = CBR_9600; break;
+ case B19200: pCh->speed = CBR_19200; break;
+ case B57600: pCh->speed = CBR_57600; break;
+ case B115200: pCh->speed = CBR_115200; break;
+ case B153600: pCh->speed = CBR_153600; break;
+ case B230400: pCh->speed = CBR_230400; break;
+ case B307200: pCh->speed = CBR_307200; break;
+ case B460800: pCh->speed = CBR_460800; break;
+ case B921600: pCh->speed = CBR_921600; break;
+ default: pCh->speed = CBR_9600; break;
+ }
+ if ( pCh->speed == CBR_C1 ) {
+ // Process the custom speed parameters.
+ int bps = pCh->BaudBase / pCh->BaudDivisor;
+ if ( bps == 921600 ) {
+ pCh->speed = CBR_921600;
+ } else {
+ bps = bps/10;
+ i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) );
+ }
+ }
+ i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed));
+
+ i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
+ pCh->dataSetOut |= (I2_DTR | I2_RTS);
+ }
+ if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag))
+ {
+ i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
+ CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1));
+ }
+ if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag))
+ {
+ i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
+ CMD_SETPAR(
+ (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP)
+ )
+ );
+ }
+ /* byte size and parity */
+ if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag))
+ {
+ int datasize;
+ switch ( cflag & CSIZE ) {
+ case CS5: datasize = CSZ_5; break;
+ case CS6: datasize = CSZ_6; break;
+ case CS7: datasize = CSZ_7; break;
+ case CS8: datasize = CSZ_8; break;
+ default: datasize = CSZ_5; break; /* as per serial.c */
+ }
+ i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) );
+ }
+ /* Process CTS flow control flag setting */
+ if ( (cflag & CRTSCTS) ) {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100,
+ 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB);
+ } else {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100,
+ 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
+ }
+ //
+ // Process XON/XOFF flow control flags settings
+ //
+ stop_char = STOP_CHAR(pCh->pTTY);
+ start_char = START_CHAR(pCh->pTTY);
+
+ //////////// can't be \000
+ if (stop_char == __DISABLED_CHAR )
+ {
+ stop_char = ~__DISABLED_CHAR;
+ }
+ if (start_char == __DISABLED_CHAR )
+ {
+ start_char = ~__DISABLED_CHAR;
+ }
+ /////////////////////////////////
+
+ if ( o_tios->c_cc[VSTART] != start_char )
+ {
+ i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char));
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char));
+ }
+ if ( o_tios->c_cc[VSTOP] != stop_char )
+ {
+ i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char));
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char));
+ }
+ if (stop_char == __DISABLED_CHAR )
+ {
+ stop_char = ~__DISABLED_CHAR; //TEST123
+ goto no_xoff;
+ }
+ if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF)))
+ {
+ if ( iflag & IXOFF ) { // Enable XOFF output flow control
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON));
+ } else { // Disable XOFF output flow control
+no_xoff:
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE));
+ }
+ }
+ if (start_char == __DISABLED_CHAR )
+ {
+ goto no_xon;
+ }
+ if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY)))
+ {
+ if ( iflag & IXON ) {
+ if ( iflag & IXANY ) { // Enable XON/XANY output flow control
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY));
+ } else { // Enable XON output flow control
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON));
+ }
+ } else { // Disable XON output flow control
+no_xon:
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE));
+ }
+ }
+ if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) )
+ {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
+ CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0)));
+ }
+ if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) )
+ {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
+ CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB));
+ }
+
+ if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR))
+ ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) )
+ {
+ char brkrpt = 0;
+ char parrpt = 0;
+
+ if ( iflag & IGNBRK ) { /* Ignore breaks altogether */
+ /* Ignore breaks altogether */
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP);
+ } else {
+ if ( iflag & BRKINT ) {
+ if ( iflag & PARMRK ) {
+ brkrpt = 0x0a; // exception an inline triple
+ } else {
+ brkrpt = 0x1a; // exception and NULL
+ }
+ brkrpt |= 0x04; // flush input
+ } else {
+ if ( iflag & PARMRK ) {
+ brkrpt = 0x0b; //POSIX triple \0377 \0 \0
+ } else {
+ brkrpt = 0x01; // Null only
+ }
+ }
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt));
+ }
+
+ if (iflag & IGNPAR) {
+ parrpt = 0x20;
+ /* would be 2 for not cirrus bug */
+ /* would be 0x20 cept for cirrus bug */
+ } else {
+ if ( iflag & PARMRK ) {
+ /*
+ * Replace error characters with 3-byte sequence (\0377,\0,char)
+ */
+ parrpt = 0x04 ;
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0));
+ } else {
+ parrpt = 0x03;
+ }
+ }
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt));
+ }
+ if (cflag & CLOCAL) {
+ // Status reporting fails for DCD if this is off
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP);
+ pCh->flags &= ~ASYNC_CHECK_CD;
+ } else {
+ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP);
+ pCh->flags |= ASYNC_CHECK_CD;
+ }
+
+service_it:
+ i2DrainOutput( pCh, 100 );
+}
+
+/******************************************************************************/
+/* IPL Device Section */
+/******************************************************************************/
+
+/******************************************************************************/
+/* Function: ip2_ipl_read() */
+/* Parameters: Pointer to device inode */
+/* Pointer to file structure */
+/* Pointer to data */
+/* Number of bytes to read */
+/* Returns: Success or failure */
+/* */
+/* Description: Ugly */
+/* */
+/* */
+/******************************************************************************/
+
+static
+ssize_t
+ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off )
+{
+ unsigned int minor = iminor(pFile->f_dentry->d_inode);
+ int rc = 0;
+
+#ifdef IP2DEBUG_IPL
+ printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count );
+#endif
+
+ switch( minor ) {
+ case 0: // IPL device
+ rc = -EINVAL;
+ break;
+ case 1: // Status dump
+ rc = -EINVAL;
+ break;
+ case 2: // Ping device
+ rc = -EINVAL;
+ break;
+ case 3: // Trace device
+ rc = DumpTraceBuffer ( pData, count );
+ break;
+ case 4: // Trace device
+ rc = DumpFifoBuffer ( pData, count );
+ break;
+ default:
+ rc = -ENODEV;
+ break;
+ }
+ return rc;
+}
+
+static int
+DumpFifoBuffer ( char __user *pData, int count )
+{
+#ifdef DEBUG_FIFO
+ int rc;
+ rc = copy_to_user(pData, DBGBuf, count);
+
+ printk(KERN_DEBUG "Last index %d\n", I );
+
+ return count;
+#endif /* DEBUG_FIFO */
+ return 0;
+}
+
+static int
+DumpTraceBuffer ( char __user *pData, int count )
+{
+#ifdef IP2DEBUG_TRACE
+ int rc;
+ int dumpcount;
+ int chunk;
+ int *pIndex = (int __user *)pData;
+
+ if ( count < (sizeof(int) * 6) ) {
+ return -EIO;
+ }
+ rc = put_user(tracewrap, pIndex );
+ rc = put_user(TRACEMAX, ++pIndex );
+ rc = put_user(tracestrip, ++pIndex );
+ rc = put_user(tracestuff, ++pIndex );
+ pData += sizeof(int) * 6;
+ count -= sizeof(int) * 6;
+
+ dumpcount = tracestuff - tracestrip;
+ if ( dumpcount < 0 ) {
+ dumpcount += TRACEMAX;
+ }
+ if ( dumpcount > count ) {
+ dumpcount = count;
+ }
+ chunk = TRACEMAX - tracestrip;
+ if ( dumpcount > chunk ) {
+ rc = copy_to_user(pData, &tracebuf[tracestrip],
+ chunk * sizeof(tracebuf[0]) );
+ pData += chunk * sizeof(tracebuf[0]);
+ tracestrip = 0;
+ chunk = dumpcount - chunk;
+ } else {
+ chunk = dumpcount;
+ }
+ rc = copy_to_user(pData, &tracebuf[tracestrip],
+ chunk * sizeof(tracebuf[0]) );
+ tracestrip += chunk;
+ tracewrap = 0;
+
+ rc = put_user(tracestrip, ++pIndex );
+ rc = put_user(tracestuff, ++pIndex );
+
+ return dumpcount;
+#else
+ return 0;
+#endif
+}
+
+/******************************************************************************/
+/* Function: ip2_ipl_write() */
+/* Parameters: */
+/* Pointer to file structure */
+/* Pointer to data */
+/* Number of bytes to write */
+/* Returns: Success or failure */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static ssize_t
+ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off)
+{
+#ifdef IP2DEBUG_IPL
+ printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count );
+#endif
+ return 0;
+}
+
+/******************************************************************************/
+/* Function: ip2_ipl_ioctl() */
+/* Parameters: Pointer to device inode */
+/* Pointer to file structure */
+/* Command */
+/* Argument */
+/* Returns: Success or failure */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static int
+ip2_ipl_ioctl ( struct inode *pInode, struct file *pFile, UINT cmd, ULONG arg )
+{
+ unsigned int iplminor = iminor(pInode);
+ int rc = 0;
+ void __user *argp = (void __user *)arg;
+ ULONG __user *pIndex = argp;
+ i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4];
+ i2ChanStrPtr pCh;
+
+#ifdef IP2DEBUG_IPL
+ printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg );
+#endif
+
+ switch ( iplminor ) {
+ case 0: // IPL device
+ rc = -EINVAL;
+ break;
+ case 1: // Status dump
+ case 5:
+ case 9:
+ case 13:
+ switch ( cmd ) {
+ case 64: /* Driver - ip2stat */
+ rc = put_user(ip2_tty_driver->refcount, pIndex++ );
+ rc = put_user(irq_counter, pIndex++ );
+ rc = put_user(bh_counter, pIndex++ );
+ break;
+
+ case 65: /* Board - ip2stat */
+ if ( pB ) {
+ rc = copy_to_user(argp, pB, sizeof(i2eBordStr));
+ rc = put_user(INB(pB->i2eStatus),
+ (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) );
+ } else {
+ rc = -ENODEV;
+ }
+ break;
+
+ default:
+ if (cmd < IP2_MAX_PORTS) {
+ pCh = DevTable[cmd];
+ if ( pCh )
+ {
+ rc = copy_to_user(argp, pCh, sizeof(i2ChanStr));
+ } else {
+ rc = -ENODEV;
+ }
+ } else {
+ rc = -EINVAL;
+ }
+ }
+ break;
+
+ case 2: // Ping device
+ rc = -EINVAL;
+ break;
+ case 3: // Trace device
+ if ( cmd == 1 ) {
+ rc = put_user(iiSendPendingMail, pIndex++ );
+ rc = put_user(i2InitChannels, pIndex++ );
+ rc = put_user(i2QueueNeeds, pIndex++ );
+ rc = put_user(i2QueueCommands, pIndex++ );
+ rc = put_user(i2GetStatus, pIndex++ );
+ rc = put_user(i2Input, pIndex++ );
+ rc = put_user(i2InputFlush, pIndex++ );
+ rc = put_user(i2Output, pIndex++ );
+ rc = put_user(i2FlushOutput, pIndex++ );
+ rc = put_user(i2DrainWakeup, pIndex++ );
+ rc = put_user(i2DrainOutput, pIndex++ );
+ rc = put_user(i2OutputFree, pIndex++ );
+ rc = put_user(i2StripFifo, pIndex++ );
+ rc = put_user(i2StuffFifoBypass, pIndex++ );
+ rc = put_user(i2StuffFifoFlow, pIndex++ );
+ rc = put_user(i2StuffFifoInline, pIndex++ );
+ rc = put_user(i2ServiceBoard, pIndex++ );
+ rc = put_user(serviceOutgoingFifo, pIndex++ );
+ // rc = put_user(ip2_init, pIndex++ );
+ rc = put_user(ip2_init_board, pIndex++ );
+ rc = put_user(find_eisa_board, pIndex++ );
+ rc = put_user(set_irq, pIndex++ );
+ rc = put_user(ip2_interrupt, pIndex++ );
+ rc = put_user(ip2_poll, pIndex++ );
+ rc = put_user(service_all_boards, pIndex++ );
+ rc = put_user(do_input, pIndex++ );
+ rc = put_user(do_status, pIndex++ );
+#ifndef IP2DEBUG_OPEN
+ rc = put_user(0, pIndex++ );
+#else
+ rc = put_user(open_sanity_check, pIndex++ );
+#endif
+ rc = put_user(ip2_open, pIndex++ );
+ rc = put_user(ip2_close, pIndex++ );
+ rc = put_user(ip2_hangup, pIndex++ );
+ rc = put_user(ip2_write, pIndex++ );
+ rc = put_user(ip2_putchar, pIndex++ );
+ rc = put_user(ip2_flush_chars, pIndex++ );
+ rc = put_user(ip2_write_room, pIndex++ );
+ rc = put_user(ip2_chars_in_buf, pIndex++ );
+ rc = put_user(ip2_flush_buffer, pIndex++ );
+
+ //rc = put_user(ip2_wait_until_sent, pIndex++ );
+ rc = put_user(0, pIndex++ );
+
+ rc = put_user(ip2_throttle, pIndex++ );
+ rc = put_user(ip2_unthrottle, pIndex++ );
+ rc = put_user(ip2_ioctl, pIndex++ );
+ rc = put_user(0, pIndex++ );
+ rc = put_user(get_serial_info, pIndex++ );
+ rc = put_user(set_serial_info, pIndex++ );
+ rc = put_user(ip2_set_termios, pIndex++ );
+ rc = put_user(ip2_set_line_discipline, pIndex++ );
+ rc = put_user(set_params, pIndex++ );
+ } else {
+ rc = -EINVAL;
+ }
+
+ break;
+
+ default:
+ rc = -ENODEV;
+ break;
+ }
+ return rc;
+}
+
+/******************************************************************************/
+/* Function: ip2_ipl_open() */
+/* Parameters: Pointer to device inode */
+/* Pointer to file structure */
+/* Returns: Success or failure */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+static int
+ip2_ipl_open( struct inode *pInode, struct file *pFile )
+{
+ unsigned int iplminor = iminor(pInode);
+ i2eBordStrPtr pB;
+ i2ChanStrPtr pCh;
+
+#ifdef IP2DEBUG_IPL
+ printk (KERN_DEBUG "IP2IPL: open\n" );
+#endif
+
+ switch(iplminor) {
+ // These are the IPL devices
+ case 0:
+ case 4:
+ case 8:
+ case 12:
+ break;
+
+ // These are the status devices
+ case 1:
+ case 5:
+ case 9:
+ case 13:
+ break;
+
+ // These are the debug devices
+ case 2:
+ case 6:
+ case 10:
+ case 14:
+ pB = i2BoardPtrTable[iplminor / 4];
+ pCh = (i2ChanStrPtr) pB->i2eChannelPtr;
+ break;
+
+ // This is the trace device
+ case 3:
+ break;
+ }
+ 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)
+{
+ 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");
+
+ 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",
+ pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting);
+ }
+ }
+
+ len += sprintf(buf+len,"#: 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,
+ tty->termios->c_cflag,tty->termios->c_iflag);
+
+ len += sprintf(buf+len,FMTLIN2,
+ pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds);
+ len += sprintf(buf+len,FMTLIN3,pCh->infl.asof,pCh->infl.room);
+ }
+ }
+ }
+ return len;
+}
+
+/*
+ * This is the handler for /proc/tty/driver/ip2
+ *
+ * This stretch of code has been largely plagerized from at least three
+ * different sources including ip2mkdev.c and a couple of other drivers.
+ * The bugs are all mine. :-) =mhw=
+ */
+static int ip2_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ int i, j, box;
+ int len = 0;
+ int boxes = 0;
+ int ports = 0;
+ int tports = 0;
+ off_t begin = 0;
+ i2eBordStrPtr pB;
+
+ len += sprintf(page, "ip2info: 1.0 driver: %s\n", pcVersion );
+ len += sprintf(page+len, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n",
+ IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR,
+ IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX);
+
+ for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+ /* This need to be reset for a board by board count... */
+ boxes = 0;
+ pB = i2BoardPtrTable[i];
+ if( pB ) {
+ switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED )
+ {
+ case POR_ID_FIIEX:
+ len += sprintf( page+len, "Board %d: EX ports=", i );
+ for( box = 0; box < ABS_MAX_BOXES; ++box )
+ {
+ ports = 0;
+
+ if( pB->i2eChannelMap[box] != 0 ) ++boxes;
+ for( j = 0; j < ABS_BIGGEST_BOX; ++j )
+ {
+ if( pB->i2eChannelMap[box] & 1<< j ) {
+ ++ports;
+ }
+ }
+ len += sprintf( page+len, "%d,", ports );
+ tports += ports;
+ }
+
+ --len; /* Backup over that last comma */
+
+ len += sprintf( page+len, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8 );
+ break;
+
+ case POR_ID_II_4:
+ len += sprintf(page+len, "Board %d: ISA-4 ports=4 boxes=1", i );
+ tports = ports = 4;
+ break;
+
+ case POR_ID_II_8:
+ len += sprintf(page+len, "Board %d: ISA-8-std ports=8 boxes=1", i );
+ tports = ports = 8;
+ break;
+
+ case POR_ID_II_8R:
+ len += sprintf(page+len, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i );
+ tports = ports = 8;
+ break;
+
+ default:
+ len += sprintf(page+len, "Board %d: unknown", i );
+ /* Don't try and probe for minor numbers */
+ tports = ports = 0;
+ }
+
+ } else {
+ /* Don't try and probe for minor numbers */
+ len += sprintf(page+len, "Board %d: vacant", i );
+ tports = ports = 0;
+ }
+
+ if( tports ) {
+ len += sprintf(page+len, " minors=" );
+
+ for ( box = 0; box < ABS_MAX_BOXES; ++box )
+ {
+ for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
+ {
+ if ( pB->i2eChannelMap[box] & (1 << j) )
+ {
+ len += sprintf (page+len,"%d,",
+ j + ABS_BIGGEST_BOX *
+ (box+i*ABS_MAX_BOXES));
+ }
+ }
+ }
+
+ page[ len - 1 ] = '\n'; /* Overwrite that last comma */
+ } else {
+ len += sprintf (page+len,"\n" );
+ }
+
+ if (len+begin > off+count)
+ break;
+ if (len+begin < off) {
+ begin += len;
+ len = 0;
+ }
+ }
+
+ if (i >= IP2_MAX_BOARDS)
+ *eof = 1;
+ if (off >= len+begin)
+ return 0;
+
+ *start = page + (off-begin);
+ return ((count < begin+len-off) ? count : begin+len-off);
+ }
+
+/******************************************************************************/
+/* Function: ip2trace() */
+/* Parameters: Value to add to trace buffer */
+/* Returns: Nothing */
+/* */
+/* Description: */
+/* */
+/* */
+/******************************************************************************/
+#ifdef IP2DEBUG_TRACE
+void
+ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...)
+{
+ long flags;
+ unsigned long *pCode = &codes;
+ union ip2breadcrumb bc;
+ i2ChanStrPtr pCh;
+
+
+ tracebuf[tracestuff++] = jiffies;
+ if ( tracestuff == TRACEMAX ) {
+ tracestuff = 0;
+ }
+ if ( tracestuff == tracestrip ) {
+ if ( ++tracestrip == TRACEMAX ) {
+ tracestrip = 0;
+ }
+ ++tracewrap;
+ }
+
+ bc.hdr.port = 0xff & pn;
+ bc.hdr.cat = cat;
+ bc.hdr.codes = (unsigned char)( codes & 0xff );
+ bc.hdr.label = label;
+ tracebuf[tracestuff++] = bc.value;
+
+ for (;;) {
+ if ( tracestuff == TRACEMAX ) {
+ tracestuff = 0;
+ }
+ if ( tracestuff == tracestrip ) {
+ if ( ++tracestrip == TRACEMAX ) {
+ tracestrip = 0;
+ }
+ ++tracewrap;
+ }
+
+ if ( !codes-- )
+ break;
+
+ tracebuf[tracestuff++] = *++pCode;
+ }
+}
+#endif
+
+
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-02 03:27:05 +0000