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Linux/drivers/watchdog/wdt_pci.c

  1 /*
  2  *      Industrial Computer Source PCI-WDT500/501 driver
  3  *
  4  *      (c) Copyright 1996-1997 Alan Cox <alan@lxorguk.ukuu.org.uk>,
  5  *                                              All Rights Reserved.
  6  *
  7  *      This program is free software; you can redistribute it and/or
  8  *      modify it under the terms of the GNU General Public License
  9  *      as published by the Free Software Foundation; either version
 10  *      2 of the License, or (at your option) any later version.
 11  *
 12  *      Neither Alan Cox nor CymruNet Ltd. admit liability nor provide
 13  *      warranty for any of this software. This material is provided
 14  *      "AS-IS" and at no charge.
 15  *
 16  *      (c) Copyright 1995    Alan Cox <alan@lxorguk.ukuu.org.uk>
 17  *
 18  *      Release 0.10.
 19  *
 20  *      Fixes
 21  *              Dave Gregorich  :       Modularisation and minor bugs
 22  *              Alan Cox        :       Added the watchdog ioctl() stuff
 23  *              Alan Cox        :       Fixed the reboot problem (as noted by
 24  *                                      Matt Crocker).
 25  *              Alan Cox        :       Added wdt= boot option
 26  *              Alan Cox        :       Cleaned up copy/user stuff
 27  *              Tim Hockin      :       Added insmod parameters, comment cleanup
 28  *                                      Parameterized timeout
 29  *              JP Nollmann     :       Added support for PCI wdt501p
 30  *              Alan Cox        :       Split ISA and PCI cards into two drivers
 31  *              Jeff Garzik     :       PCI cleanups
 32  *              Tigran Aivazian :       Restructured wdtpci_init_one() to handle
 33  *                                      failures
 34  *              Joel Becker     :       Added WDIOC_GET/SETTIMEOUT
 35  *              Zwane Mwaikambo :       Magic char closing, locking changes,
 36  *                                      cleanups
 37  *              Matt Domsch     :       nowayout module option
 38  */
 39 
 40 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 41 
 42 #include <linux/interrupt.h>
 43 #include <linux/module.h>
 44 #include <linux/moduleparam.h>
 45 #include <linux/types.h>
 46 #include <linux/miscdevice.h>
 47 #include <linux/watchdog.h>
 48 #include <linux/ioport.h>
 49 #include <linux/delay.h>
 50 #include <linux/notifier.h>
 51 #include <linux/reboot.h>
 52 #include <linux/init.h>
 53 #include <linux/fs.h>
 54 #include <linux/pci.h>
 55 #include <linux/io.h>
 56 #include <linux/uaccess.h>
 57 
 58 
 59 #define WDT_IS_PCI
 60 #include "wd501p.h"
 61 
 62 /* We can only use 1 card due to the /dev/watchdog restriction */
 63 static int dev_count;
 64 
 65 static unsigned long open_lock;
 66 static DEFINE_SPINLOCK(wdtpci_lock);
 67 static char expect_close;
 68 
 69 static resource_size_t io;
 70 static int irq;
 71 
 72 /* Default timeout */
 73 #define WD_TIMO 60                      /* Default heartbeat = 60 seconds */
 74 
 75 static int heartbeat = WD_TIMO;
 76 static int wd_heartbeat;
 77 module_param(heartbeat, int, 0);
 78 MODULE_PARM_DESC(heartbeat,
 79                 "Watchdog heartbeat in seconds. (0<heartbeat<65536, default="
 80                                 __MODULE_STRING(WD_TIMO) ")");
 81 
 82 static bool nowayout = WATCHDOG_NOWAYOUT;
 83 module_param(nowayout, bool, 0);
 84 MODULE_PARM_DESC(nowayout,
 85                 "Watchdog cannot be stopped once started (default="
 86                                 __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 87 
 88 /* Support for the Fan Tachometer on the PCI-WDT501 */
 89 static int tachometer;
 90 module_param(tachometer, int, 0);
 91 MODULE_PARM_DESC(tachometer,
 92                 "PCI-WDT501 Fan Tachometer support (0=disable, default=0)");
 93 
 94 static int type = 500;
 95 module_param(type, int, 0);
 96 MODULE_PARM_DESC(type,
 97                 "PCI-WDT501 Card type (500 or 501 , default=500)");
 98 
 99 /*
100  *      Programming support
101  */
102 
103 static void wdtpci_ctr_mode(int ctr, int mode)
104 {
105         ctr <<= 6;
106         ctr |= 0x30;
107         ctr |= (mode << 1);
108         outb(ctr, WDT_CR);
109         udelay(8);
110 }
111 
112 static void wdtpci_ctr_load(int ctr, int val)
113 {
114         outb(val & 0xFF, WDT_COUNT0 + ctr);
115         udelay(8);
116         outb(val >> 8, WDT_COUNT0 + ctr);
117         udelay(8);
118 }
119 
120 /**
121  *      wdtpci_start:
122  *
123  *      Start the watchdog driver.
124  */
125 
126 static int wdtpci_start(void)
127 {
128         unsigned long flags;
129 
130         spin_lock_irqsave(&wdtpci_lock, flags);
131 
132         /*
133          * "pet" the watchdog, as Access says.
134          * This resets the clock outputs.
135          */
136         inb(WDT_DC);                    /* Disable watchdog */
137         udelay(8);
138         wdtpci_ctr_mode(2, 0);          /* Program CTR2 for Mode 0:
139                                                 Pulse on Terminal Count */
140         outb(0, WDT_DC);                /* Enable watchdog */
141         udelay(8);
142         inb(WDT_DC);                    /* Disable watchdog */
143         udelay(8);
144         outb(0, WDT_CLOCK);             /* 2.0833MHz clock */
145         udelay(8);
146         inb(WDT_BUZZER);                /* disable */
147         udelay(8);
148         inb(WDT_OPTONOTRST);            /* disable */
149         udelay(8);
150         inb(WDT_OPTORST);               /* disable */
151         udelay(8);
152         inb(WDT_PROGOUT);               /* disable */
153         udelay(8);
154         wdtpci_ctr_mode(0, 3);          /* Program CTR0 for Mode 3:
155                                                 Square Wave Generator */
156         wdtpci_ctr_mode(1, 2);          /* Program CTR1 for Mode 2:
157                                                 Rate Generator */
158         wdtpci_ctr_mode(2, 1);          /* Program CTR2 for Mode 1:
159                                                 Retriggerable One-Shot */
160         wdtpci_ctr_load(0, 20833);      /* count at 100Hz */
161         wdtpci_ctr_load(1, wd_heartbeat);/* Heartbeat */
162         /* DO NOT LOAD CTR2 on PCI card! -- JPN */
163         outb(0, WDT_DC);                /* Enable watchdog */
164         udelay(8);
165 
166         spin_unlock_irqrestore(&wdtpci_lock, flags);
167         return 0;
168 }
169 
170 /**
171  *      wdtpci_stop:
172  *
173  *      Stop the watchdog driver.
174  */
175 
176 static int wdtpci_stop(void)
177 {
178         unsigned long flags;
179 
180         /* Turn the card off */
181         spin_lock_irqsave(&wdtpci_lock, flags);
182         inb(WDT_DC);                    /* Disable watchdog */
183         udelay(8);
184         wdtpci_ctr_load(2, 0);          /* 0 length reset pulses now */
185         spin_unlock_irqrestore(&wdtpci_lock, flags);
186         return 0;
187 }
188 
189 /**
190  *      wdtpci_ping:
191  *
192  *      Reload counter one with the watchdog heartbeat. We don't bother
193  *      reloading the cascade counter.
194  */
195 
196 static int wdtpci_ping(void)
197 {
198         unsigned long flags;
199 
200         spin_lock_irqsave(&wdtpci_lock, flags);
201         /* Write a watchdog value */
202         inb(WDT_DC);                    /* Disable watchdog */
203         udelay(8);
204         wdtpci_ctr_mode(1, 2);          /* Re-Program CTR1 for Mode 2:
205                                                         Rate Generator */
206         wdtpci_ctr_load(1, wd_heartbeat);/* Heartbeat */
207         outb(0, WDT_DC);                /* Enable watchdog */
208         udelay(8);
209         spin_unlock_irqrestore(&wdtpci_lock, flags);
210         return 0;
211 }
212 
213 /**
214  *      wdtpci_set_heartbeat:
215  *      @t:             the new heartbeat value that needs to be set.
216  *
217  *      Set a new heartbeat value for the watchdog device. If the heartbeat
218  *      value is incorrect we keep the old value and return -EINVAL.
219  *      If successful we return 0.
220  */
221 static int wdtpci_set_heartbeat(int t)
222 {
223         /* Arbitrary, can't find the card's limits */
224         if (t < 1 || t > 65535)
225                 return -EINVAL;
226 
227         heartbeat = t;
228         wd_heartbeat = t * 100;
229         return 0;
230 }
231 
232 /**
233  *      wdtpci_get_status:
234  *      @status:                the new status.
235  *
236  *      Extract the status information from a WDT watchdog device. There are
237  *      several board variants so we have to know which bits are valid. Some
238  *      bits default to one and some to zero in order to be maximally painful.
239  *
240  *      we then map the bits onto the status ioctl flags.
241  */
242 
243 static int wdtpci_get_status(int *status)
244 {
245         unsigned char new_status;
246         unsigned long flags;
247 
248         spin_lock_irqsave(&wdtpci_lock, flags);
249         new_status = inb(WDT_SR);
250         spin_unlock_irqrestore(&wdtpci_lock, flags);
251 
252         *status = 0;
253         if (new_status & WDC_SR_ISOI0)
254                 *status |= WDIOF_EXTERN1;
255         if (new_status & WDC_SR_ISII1)
256                 *status |= WDIOF_EXTERN2;
257         if (type == 501) {
258                 if (!(new_status & WDC_SR_TGOOD))
259                         *status |= WDIOF_OVERHEAT;
260                 if (!(new_status & WDC_SR_PSUOVER))
261                         *status |= WDIOF_POWEROVER;
262                 if (!(new_status & WDC_SR_PSUUNDR))
263                         *status |= WDIOF_POWERUNDER;
264                 if (tachometer) {
265                         if (!(new_status & WDC_SR_FANGOOD))
266                                 *status |= WDIOF_FANFAULT;
267                 }
268         }
269         return 0;
270 }
271 
272 /**
273  *      wdtpci_get_temperature:
274  *
275  *      Reports the temperature in degrees Fahrenheit. The API is in
276  *      farenheit. It was designed by an imperial measurement luddite.
277  */
278 
279 static int wdtpci_get_temperature(int *temperature)
280 {
281         unsigned short c;
282         unsigned long flags;
283         spin_lock_irqsave(&wdtpci_lock, flags);
284         c = inb(WDT_RT);
285         udelay(8);
286         spin_unlock_irqrestore(&wdtpci_lock, flags);
287         *temperature = (c * 11 / 15) + 7;
288         return 0;
289 }
290 
291 /**
292  *      wdtpci_interrupt:
293  *      @irq:           Interrupt number
294  *      @dev_id:        Unused as we don't allow multiple devices.
295  *
296  *      Handle an interrupt from the board. These are raised when the status
297  *      map changes in what the board considers an interesting way. That means
298  *      a failure condition occurring.
299  */
300 
301 static irqreturn_t wdtpci_interrupt(int irq, void *dev_id)
302 {
303         /*
304          *      Read the status register see what is up and
305          *      then printk it.
306          */
307         unsigned char status;
308 
309         spin_lock(&wdtpci_lock);
310 
311         status = inb(WDT_SR);
312         udelay(8);
313 
314         pr_crit("status %d\n", status);
315 
316         if (type == 501) {
317                 if (!(status & WDC_SR_TGOOD)) {
318                         pr_crit("Overheat alarm (%d)\n", inb(WDT_RT));
319                         udelay(8);
320                 }
321                 if (!(status & WDC_SR_PSUOVER))
322                         pr_crit("PSU over voltage\n");
323                 if (!(status & WDC_SR_PSUUNDR))
324                         pr_crit("PSU under voltage\n");
325                 if (tachometer) {
326                         if (!(status & WDC_SR_FANGOOD))
327                                 pr_crit("Possible fan fault\n");
328                 }
329         }
330         if (!(status & WDC_SR_WCCR)) {
331 #ifdef SOFTWARE_REBOOT
332 #ifdef ONLY_TESTING
333                 pr_crit("Would Reboot\n");
334 #else
335                 pr_crit("Initiating system reboot\n");
336                 emergency_restart(NULL);
337 #endif
338 #else
339                 pr_crit("Reset in 5ms\n");
340 #endif
341         }
342         spin_unlock(&wdtpci_lock);
343         return IRQ_HANDLED;
344 }
345 
346 
347 /**
348  *      wdtpci_write:
349  *      @file: file handle to the watchdog
350  *      @buf: buffer to write (unused as data does not matter here
351  *      @count: count of bytes
352  *      @ppos: pointer to the position to write. No seeks allowed
353  *
354  *      A write to a watchdog device is defined as a keepalive signal. Any
355  *      write of data will do, as we we don't define content meaning.
356  */
357 
358 static ssize_t wdtpci_write(struct file *file, const char __user *buf,
359                                                 size_t count, loff_t *ppos)
360 {
361         if (count) {
362                 if (!nowayout) {
363                         size_t i;
364 
365                         /* In case it was set long ago */
366                         expect_close = 0;
367 
368                         for (i = 0; i != count; i++) {
369                                 char c;
370                                 if (get_user(c, buf + i))
371                                         return -EFAULT;
372                                 if (c == 'V')
373                                         expect_close = 42;
374                         }
375                 }
376                 wdtpci_ping();
377         }
378         return count;
379 }
380 
381 /**
382  *      wdtpci_ioctl:
383  *      @file: file handle to the device
384  *      @cmd: watchdog command
385  *      @arg: argument pointer
386  *
387  *      The watchdog API defines a common set of functions for all watchdogs
388  *      according to their available features. We only actually usefully support
389  *      querying capabilities and current status.
390  */
391 
392 static long wdtpci_ioctl(struct file *file, unsigned int cmd,
393                                                         unsigned long arg)
394 {
395         void __user *argp = (void __user *)arg;
396         int __user *p = argp;
397         int new_heartbeat;
398         int status;
399 
400         struct watchdog_info ident = {
401                 .options =              WDIOF_SETTIMEOUT|
402                                         WDIOF_MAGICCLOSE|
403                                         WDIOF_KEEPALIVEPING,
404                 .firmware_version =     1,
405                 .identity =             "PCI-WDT500/501",
406         };
407 
408         /* Add options according to the card we have */
409         ident.options |= (WDIOF_EXTERN1|WDIOF_EXTERN2);
410         if (type == 501) {
411                 ident.options |= (WDIOF_OVERHEAT|WDIOF_POWERUNDER|
412                                                         WDIOF_POWEROVER);
413                 if (tachometer)
414                         ident.options |= WDIOF_FANFAULT;
415         }
416 
417         switch (cmd) {
418         case WDIOC_GETSUPPORT:
419                 return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
420         case WDIOC_GETSTATUS:
421                 wdtpci_get_status(&status);
422                 return put_user(status, p);
423         case WDIOC_GETBOOTSTATUS:
424                 return put_user(0, p);
425         case WDIOC_KEEPALIVE:
426                 wdtpci_ping();
427                 return 0;
428         case WDIOC_SETTIMEOUT:
429                 if (get_user(new_heartbeat, p))
430                         return -EFAULT;
431                 if (wdtpci_set_heartbeat(new_heartbeat))
432                         return -EINVAL;
433                 wdtpci_ping();
434                 /* Fall */
435         case WDIOC_GETTIMEOUT:
436                 return put_user(heartbeat, p);
437         default:
438                 return -ENOTTY;
439         }
440 }
441 
442 /**
443  *      wdtpci_open:
444  *      @inode: inode of device
445  *      @file: file handle to device
446  *
447  *      The watchdog device has been opened. The watchdog device is single
448  *      open and on opening we load the counters. Counter zero is a 100Hz
449  *      cascade, into counter 1 which downcounts to reboot. When the counter
450  *      triggers counter 2 downcounts the length of the reset pulse which
451  *      set set to be as long as possible.
452  */
453 
454 static int wdtpci_open(struct inode *inode, struct file *file)
455 {
456         if (test_and_set_bit(0, &open_lock))
457                 return -EBUSY;
458 
459         if (nowayout)
460                 __module_get(THIS_MODULE);
461         /*
462          *      Activate
463          */
464         wdtpci_start();
465         return nonseekable_open(inode, file);
466 }
467 
468 /**
469  *      wdtpci_release:
470  *      @inode: inode to board
471  *      @file: file handle to board
472  *
473  *      The watchdog has a configurable API. There is a religious dispute
474  *      between people who want their watchdog to be able to shut down and
475  *      those who want to be sure if the watchdog manager dies the machine
476  *      reboots. In the former case we disable the counters, in the latter
477  *      case you have to open it again very soon.
478  */
479 
480 static int wdtpci_release(struct inode *inode, struct file *file)
481 {
482         if (expect_close == 42) {
483                 wdtpci_stop();
484         } else {
485                 pr_crit("Unexpected close, not stopping timer!\n");
486                 wdtpci_ping();
487         }
488         expect_close = 0;
489         clear_bit(0, &open_lock);
490         return 0;
491 }
492 
493 /**
494  *      wdtpci_temp_read:
495  *      @file: file handle to the watchdog board
496  *      @buf: buffer to write 1 byte into
497  *      @count: length of buffer
498  *      @ptr: offset (no seek allowed)
499  *
500  *      Read reports the temperature in degrees Fahrenheit. The API is in
501  *      fahrenheit. It was designed by an imperial measurement luddite.
502  */
503 
504 static ssize_t wdtpci_temp_read(struct file *file, char __user *buf,
505                                                 size_t count, loff_t *ptr)
506 {
507         int temperature;
508 
509         if (wdtpci_get_temperature(&temperature))
510                 return -EFAULT;
511 
512         if (copy_to_user(buf, &temperature, 1))
513                 return -EFAULT;
514 
515         return 1;
516 }
517 
518 /**
519  *      wdtpci_temp_open:
520  *      @inode: inode of device
521  *      @file: file handle to device
522  *
523  *      The temperature device has been opened.
524  */
525 
526 static int wdtpci_temp_open(struct inode *inode, struct file *file)
527 {
528         return nonseekable_open(inode, file);
529 }
530 
531 /**
532  *      wdtpci_temp_release:
533  *      @inode: inode to board
534  *      @file: file handle to board
535  *
536  *      The temperature device has been closed.
537  */
538 
539 static int wdtpci_temp_release(struct inode *inode, struct file *file)
540 {
541         return 0;
542 }
543 
544 /**
545  *      notify_sys:
546  *      @this: our notifier block
547  *      @code: the event being reported
548  *      @unused: unused
549  *
550  *      Our notifier is called on system shutdowns. We want to turn the card
551  *      off at reboot otherwise the machine will reboot again during memory
552  *      test or worse yet during the following fsck. This would suck, in fact
553  *      trust me - if it happens it does suck.
554  */
555 
556 static int wdtpci_notify_sys(struct notifier_block *this, unsigned long code,
557                                                         void *unused)
558 {
559         if (code == SYS_DOWN || code == SYS_HALT)
560                 wdtpci_stop();
561         return NOTIFY_DONE;
562 }
563 
564 /*
565  *      Kernel Interfaces
566  */
567 
568 
569 static const struct file_operations wdtpci_fops = {
570         .owner          = THIS_MODULE,
571         .llseek         = no_llseek,
572         .write          = wdtpci_write,
573         .unlocked_ioctl = wdtpci_ioctl,
574         .open           = wdtpci_open,
575         .release        = wdtpci_release,
576 };
577 
578 static struct miscdevice wdtpci_miscdev = {
579         .minor  = WATCHDOG_MINOR,
580         .name   = "watchdog",
581         .fops   = &wdtpci_fops,
582 };
583 
584 static const struct file_operations wdtpci_temp_fops = {
585         .owner          = THIS_MODULE,
586         .llseek         = no_llseek,
587         .read           = wdtpci_temp_read,
588         .open           = wdtpci_temp_open,
589         .release        = wdtpci_temp_release,
590 };
591 
592 static struct miscdevice temp_miscdev = {
593         .minor  = TEMP_MINOR,
594         .name   = "temperature",
595         .fops   = &wdtpci_temp_fops,
596 };
597 
598 /*
599  *      The WDT card needs to learn about soft shutdowns in order to
600  *      turn the timebomb registers off.
601  */
602 
603 static struct notifier_block wdtpci_notifier = {
604         .notifier_call = wdtpci_notify_sys,
605 };
606 
607 
608 static int wdtpci_init_one(struct pci_dev *dev,
609                                         const struct pci_device_id *ent)
610 {
611         int ret = -EIO;
612 
613         dev_count++;
614         if (dev_count > 1) {
615                 pr_err("This driver only supports one device\n");
616                 return -ENODEV;
617         }
618 
619         if (type != 500 && type != 501) {
620                 pr_err("unknown card type '%d'\n", type);
621                 return -ENODEV;
622         }
623 
624         if (pci_enable_device(dev)) {
625                 pr_err("Not possible to enable PCI Device\n");
626                 return -ENODEV;
627         }
628 
629         if (pci_resource_start(dev, 2) == 0x0000) {
630                 pr_err("No I/O-Address for card detected\n");
631                 ret = -ENODEV;
632                 goto out_pci;
633         }
634 
635         if (pci_request_region(dev, 2, "wdt_pci")) {
636                 pr_err("I/O address 0x%llx already in use\n",
637                        (unsigned long long)pci_resource_start(dev, 2));
638                 goto out_pci;
639         }
640 
641         irq = dev->irq;
642         io = pci_resource_start(dev, 2);
643 
644         if (request_irq(irq, wdtpci_interrupt, IRQF_SHARED,
645                          "wdt_pci", &wdtpci_miscdev)) {
646                 pr_err("IRQ %d is not free\n", irq);
647                 goto out_reg;
648         }
649 
650         pr_info("PCI-WDT500/501 (PCI-WDG-CSM) driver 0.10 at 0x%llx (Interrupt %d)\n",
651                 (unsigned long long)io, irq);
652 
653         /* Check that the heartbeat value is within its range;
654            if not reset to the default */
655         if (wdtpci_set_heartbeat(heartbeat)) {
656                 wdtpci_set_heartbeat(WD_TIMO);
657                 pr_info("heartbeat value must be 0 < heartbeat < 65536, using %d\n",
658                         WD_TIMO);
659         }
660 
661         ret = register_reboot_notifier(&wdtpci_notifier);
662         if (ret) {
663                 pr_err("cannot register reboot notifier (err=%d)\n", ret);
664                 goto out_irq;
665         }
666 
667         if (type == 501) {
668                 ret = misc_register(&temp_miscdev);
669                 if (ret) {
670                         pr_err("cannot register miscdev on minor=%d (err=%d)\n",
671                                TEMP_MINOR, ret);
672                         goto out_rbt;
673                 }
674         }
675 
676         ret = misc_register(&wdtpci_miscdev);
677         if (ret) {
678                 pr_err("cannot register miscdev on minor=%d (err=%d)\n",
679                        WATCHDOG_MINOR, ret);
680                 goto out_misc;
681         }
682 
683         pr_info("initialized. heartbeat=%d sec (nowayout=%d)\n",
684                 heartbeat, nowayout);
685         if (type == 501)
686                 pr_info("Fan Tachometer is %s\n",
687                         tachometer ? "Enabled" : "Disabled");
688 
689         ret = 0;
690 out:
691         return ret;
692 
693 out_misc:
694         if (type == 501)
695                 misc_deregister(&temp_miscdev);
696 out_rbt:
697         unregister_reboot_notifier(&wdtpci_notifier);
698 out_irq:
699         free_irq(irq, &wdtpci_miscdev);
700 out_reg:
701         pci_release_region(dev, 2);
702 out_pci:
703         pci_disable_device(dev);
704         goto out;
705 }
706 
707 
708 static void wdtpci_remove_one(struct pci_dev *pdev)
709 {
710         /* here we assume only one device will ever have
711          * been picked up and registered by probe function */
712         misc_deregister(&wdtpci_miscdev);
713         if (type == 501)
714                 misc_deregister(&temp_miscdev);
715         unregister_reboot_notifier(&wdtpci_notifier);
716         free_irq(irq, &wdtpci_miscdev);
717         pci_release_region(pdev, 2);
718         pci_disable_device(pdev);
719         dev_count--;
720 }
721 
722 
723 static const struct pci_device_id wdtpci_pci_tbl[] = {
724         {
725                 .vendor    = PCI_VENDOR_ID_ACCESSIO,
726                 .device    = PCI_DEVICE_ID_ACCESSIO_WDG_CSM,
727                 .subvendor = PCI_ANY_ID,
728                 .subdevice = PCI_ANY_ID,
729         },
730         { 0, }, /* terminate list */
731 };
732 MODULE_DEVICE_TABLE(pci, wdtpci_pci_tbl);
733 
734 
735 static struct pci_driver wdtpci_driver = {
736         .name           = "wdt_pci",
737         .id_table       = wdtpci_pci_tbl,
738         .probe          = wdtpci_init_one,
739         .remove         = wdtpci_remove_one,
740 };
741 
742 module_pci_driver(wdtpci_driver);
743 
744 MODULE_AUTHOR("JP Nollmann, Alan Cox");
745 MODULE_DESCRIPTION("Driver for the ICS PCI-WDT500/501 watchdog cards");
746 MODULE_LICENSE("GPL");
747 

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