2 * intel TCO Watchdog Driver (Used in i82801 and i6300ESB chipsets)
4 * (c) Copyright 2006 Wim Van Sebroeck <wim@iguana.be>.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
11 * Neither Wim Van Sebroeck nor Iguana vzw. admit liability nor
12 * provide warranty for any of this software. This material is
13 * provided "AS-IS" and at no charge.
15 * The TCO watchdog is implemented in the following I/O controller hubs:
16 * (See the intel documentation on http://developer.intel.com.)
17 * 82801AA (ICH) : document number 290655-003, 290677-014,
18 * 82801AB (ICHO) : document number 290655-003, 290677-014,
19 * 82801BA (ICH2) : document number 290687-002, 298242-027,
20 * 82801BAM (ICH2-M) : document number 290687-002, 298242-027,
21 * 82801CA (ICH3-S) : document number 290733-003, 290739-013,
22 * 82801CAM (ICH3-M) : document number 290716-001, 290718-007,
23 * 82801DB (ICH4) : document number 290744-001, 290745-020,
24 * 82801DBM (ICH4-M) : document number 252337-001, 252663-005,
25 * 82801E (C-ICH) : document number 273599-001, 273645-002,
26 * 82801EB (ICH5) : document number 252516-001, 252517-003,
27 * 82801ER (ICH5R) : document number 252516-001, 252517-003,
28 * 82801FB (ICH6) : document number 301473-002, 301474-007,
29 * 82801FR (ICH6R) : document number 301473-002, 301474-007,
30 * 82801FBM (ICH6-M) : document number 301473-002, 301474-007,
31 * 82801FW (ICH6W) : document number 301473-001, 301474-007,
32 * 82801FRW (ICH6RW) : document number 301473-001, 301474-007,
33 * 82801GB (ICH7) : document number 307013-002, 307014-009,
34 * 82801GR (ICH7R) : document number 307013-002, 307014-009,
35 * 82801GDH (ICH7DH) : document number 307013-002, 307014-009,
36 * 82801GBM (ICH7-M) : document number 307013-002, 307014-009,
37 * 82801GHM (ICH7-M DH) : document number 307013-002, 307014-009,
38 * 82801HB (ICH8) : document number 313056-002, 313057-004,
39 * 82801HR (ICH8R) : document number 313056-002, 313057-004,
40 * 82801HH (ICH8DH) : document number 313056-002, 313057-004,
41 * 82801HO (ICH8DO) : document number 313056-002, 313057-004,
42 * 6300ESB (6300ESB) : document number 300641-003
46 * Includes, defines, variables, module parameters, ...
49 /* Module and version information */
50 #define DRV_NAME "iTCO_wdt"
51 #define DRV_VERSION "1.00"
52 #define DRV_RELDATE "08-Oct-2006"
53 #define PFX DRV_NAME ": "
56 #include <linux/module.h> /* For module specific items */
57 #include <linux/moduleparam.h> /* For new moduleparam's */
58 #include <linux/types.h> /* For standard types (like size_t) */
59 #include <linux/errno.h> /* For the -ENODEV/... values */
60 #include <linux/kernel.h> /* For printk/panic/... */
61 #include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */
62 #include <linux/watchdog.h> /* For the watchdog specific items */
63 #include <linux/init.h> /* For __init/__exit/... */
64 #include <linux/fs.h> /* For file operations */
65 #include <linux/platform_device.h> /* For platform_driver framework */
66 #include <linux/pci.h> /* For pci functions */
67 #include <linux/ioport.h> /* For io-port access */
68 #include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */
70 #include <asm/uaccess.h> /* For copy_to_user/put_user/... */
71 #include <asm/io.h> /* For inb/outb/... */
73 /* TCO related info */
75 TCO_ICH = 0, /* ICH */
78 TCO_ICH2M, /* ICH2-M */
79 TCO_ICH3, /* ICH3-S */
80 TCO_ICH3M, /* ICH3-M */
82 TCO_ICH4M, /* ICH4-M */
84 TCO_ICH5, /* ICH5 & ICH5R */
85 TCO_6300ESB, /* 6300ESB */
86 TCO_ICH6, /* ICH6 & ICH6R */
87 TCO_ICH6M, /* ICH6-M */
88 TCO_ICH6W, /* ICH6W & ICH6RW */
89 TCO_ICH7, /* ICH7 & ICH7R */
90 TCO_ICH7M, /* ICH7-M */
91 TCO_ICH7MDH, /* ICH7-M DH */
92 TCO_ICH8, /* ICH8 & ICH8R */
93 TCO_ICH8DH, /* ICH8DH */
94 TCO_ICH8DO, /* ICH8DO */
99 unsigned int iTCO_version;
100 } iTCO_chipset_info[] __devinitdata = {
110 {"ICH5 or ICH5R", 1},
112 {"ICH6 or ICH6R", 2},
114 {"ICH6W or ICH6RW", 2},
115 {"ICH7 or ICH7R", 2},
118 {"ICH8 or ICH8R", 2},
125 * This data only exists for exporting the supported PCI ids
126 * via MODULE_DEVICE_TABLE. We do not actually register a
127 * pci_driver, because the I/O Controller Hub has also other
128 * functions that probably will be registered by other drivers.
130 static struct pci_device_id iTCO_wdt_pci_tbl[] = {
131 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH },
132 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH0 },
133 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH2 },
134 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH2M },
135 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH3 },
136 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH3M },
137 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH4 },
138 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH4M },
139 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801E_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_CICH },
140 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH5 },
141 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_6300ESB },
142 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH6 },
143 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH6M },
144 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH6W },
145 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH7 },
146 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH7M },
147 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH7MDH },
148 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH8 },
149 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH8DH },
150 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TCO_ICH8DO },
151 { 0, }, /* End of list */
153 MODULE_DEVICE_TABLE (pci, iTCO_wdt_pci_tbl);
155 /* Address definitions for the TCO */
156 #define TCOBASE iTCO_wdt_private.ACPIBASE + 0x60 /* TCO base address */
157 #define SMI_EN iTCO_wdt_private.ACPIBASE + 0x30 /* SMI Control and Enable Register */
159 #define TCO_RLD TCOBASE + 0x00 /* TCO Timer Reload and Current Value */
160 #define TCOv1_TMR TCOBASE + 0x01 /* TCOv1 Timer Initial Value */
161 #define TCO_DAT_IN TCOBASE + 0x02 /* TCO Data In Register */
162 #define TCO_DAT_OUT TCOBASE + 0x03 /* TCO Data Out Register */
163 #define TCO1_STS TCOBASE + 0x04 /* TCO1 Status Register */
164 #define TCO2_STS TCOBASE + 0x06 /* TCO2 Status Register */
165 #define TCO1_CNT TCOBASE + 0x08 /* TCO1 Control Register */
166 #define TCO2_CNT TCOBASE + 0x0a /* TCO2 Control Register */
167 #define TCOv2_TMR TCOBASE + 0x12 /* TCOv2 Timer Initial Value */
169 /* internal variables */
170 static unsigned long is_active;
171 static char expect_release;
172 static struct { /* this is private data for the iTCO_wdt device */
173 unsigned int iTCO_version; /* TCO version/generation */
174 unsigned long ACPIBASE; /* The cards ACPIBASE address (TCOBASE = ACPIBASE+0x60) */
175 unsigned long __iomem *gcs; /* NO_REBOOT flag is Memory-Mapped GCS register bit 5 (TCO version 2) */
176 spinlock_t io_lock; /* the lock for io operations */
177 struct pci_dev *pdev; /* the PCI-device */
180 static struct platform_device *iTCO_wdt_platform_device; /* the watchdog platform device */
182 /* module parameters */
183 #define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat */
184 static int heartbeat = WATCHDOG_HEARTBEAT; /* in seconds */
185 module_param(heartbeat, int, 0);
186 MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2<heartbeat<39 (TCO v1) or 613 (TCO v2), default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
188 static int nowayout = WATCHDOG_NOWAYOUT;
189 module_param(nowayout, int, 0);
190 MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)");
193 * Some TCO specific functions
196 static inline unsigned int seconds_to_ticks(int seconds)
198 /* the internal timer is stored as ticks which decrement
199 * every 0.6 seconds */
200 return (seconds * 10) / 6;
203 static void iTCO_wdt_set_NO_REBOOT_bit(void)
207 /* Set the NO_REBOOT bit: this disables reboots */
208 if (iTCO_wdt_private.iTCO_version == 2) {
209 val32 = readl(iTCO_wdt_private.gcs);
211 writel(val32, iTCO_wdt_private.gcs);
212 } else if (iTCO_wdt_private.iTCO_version == 1) {
213 pci_read_config_dword(iTCO_wdt_private.pdev, 0xd4, &val32);
215 pci_write_config_dword(iTCO_wdt_private.pdev, 0xd4, val32);
219 static int iTCO_wdt_unset_NO_REBOOT_bit(void)
224 /* Unset the NO_REBOOT bit: this enables reboots */
225 if (iTCO_wdt_private.iTCO_version == 2) {
226 val32 = readl(iTCO_wdt_private.gcs);
228 writel(val32, iTCO_wdt_private.gcs);
230 val32 = readl(iTCO_wdt_private.gcs);
231 if (val32 & 0x00000020)
233 } else if (iTCO_wdt_private.iTCO_version == 1) {
234 pci_read_config_dword(iTCO_wdt_private.pdev, 0xd4, &val32);
236 pci_write_config_dword(iTCO_wdt_private.pdev, 0xd4, val32);
238 pci_read_config_dword(iTCO_wdt_private.pdev, 0xd4, &val32);
239 if (val32 & 0x00000002)
243 return ret; /* returns: 0 = OK, -EIO = Error */
246 static int iTCO_wdt_start(void)
250 spin_lock(&iTCO_wdt_private.io_lock);
252 /* disable chipset's NO_REBOOT bit */
253 if (iTCO_wdt_unset_NO_REBOOT_bit()) {
254 printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, reboot disabled by hardware\n");
258 /* Bit 11: TCO Timer Halt -> 0 = The TCO timer is enabled to count */
263 spin_unlock(&iTCO_wdt_private.io_lock);
270 static int iTCO_wdt_stop(void)
274 spin_lock(&iTCO_wdt_private.io_lock);
276 /* Bit 11: TCO Timer Halt -> 1 = The TCO timer is disabled */
282 /* Set the NO_REBOOT bit to prevent later reboots, just for sure */
283 iTCO_wdt_set_NO_REBOOT_bit();
285 spin_unlock(&iTCO_wdt_private.io_lock);
287 if ((val & 0x0800) == 0)
292 static int iTCO_wdt_keepalive(void)
294 spin_lock(&iTCO_wdt_private.io_lock);
296 /* Reload the timer by writing to the TCO Timer Counter register */
297 if (iTCO_wdt_private.iTCO_version == 2) {
299 } else if (iTCO_wdt_private.iTCO_version == 1) {
303 spin_unlock(&iTCO_wdt_private.io_lock);
307 static int iTCO_wdt_set_heartbeat(int t)
313 tmrval = seconds_to_ticks(t);
314 /* from the specs: */
315 /* "Values of 0h-3h are ignored and should not be attempted" */
318 if (((iTCO_wdt_private.iTCO_version == 2) && (tmrval > 0x3ff)) ||
319 ((iTCO_wdt_private.iTCO_version == 1) && (tmrval > 0x03f)))
322 /* Write new heartbeat to watchdog */
323 if (iTCO_wdt_private.iTCO_version == 2) {
324 spin_lock(&iTCO_wdt_private.io_lock);
325 val16 = inw(TCOv2_TMR);
328 outw(val16, TCOv2_TMR);
329 val16 = inw(TCOv2_TMR);
330 spin_unlock(&iTCO_wdt_private.io_lock);
332 if ((val16 & 0x3ff) != tmrval)
334 } else if (iTCO_wdt_private.iTCO_version == 1) {
335 spin_lock(&iTCO_wdt_private.io_lock);
336 val8 = inb(TCOv1_TMR);
338 val8 |= (tmrval & 0xff);
339 outb(val8, TCOv1_TMR);
340 val8 = inb(TCOv1_TMR);
341 spin_unlock(&iTCO_wdt_private.io_lock);
343 if ((val8 & 0x3f) != tmrval)
351 static int iTCO_wdt_get_timeleft (int *time_left)
356 /* read the TCO Timer */
357 if (iTCO_wdt_private.iTCO_version == 2) {
358 spin_lock(&iTCO_wdt_private.io_lock);
359 val16 = inw(TCO_RLD);
361 spin_unlock(&iTCO_wdt_private.io_lock);
363 *time_left = (val16 * 6) / 10;
364 } else if (iTCO_wdt_private.iTCO_version == 1) {
365 spin_lock(&iTCO_wdt_private.io_lock);
368 spin_unlock(&iTCO_wdt_private.io_lock);
370 *time_left = (val8 * 6) / 10;
377 * /dev/watchdog handling
380 static int iTCO_wdt_open (struct inode *inode, struct file *file)
382 /* /dev/watchdog can only be opened once */
383 if (test_and_set_bit(0, &is_active))
387 * Reload and activate timer
389 iTCO_wdt_keepalive();
391 return nonseekable_open(inode, file);
394 static int iTCO_wdt_release (struct inode *inode, struct file *file)
397 * Shut off the timer.
399 if (expect_release == 42) {
402 printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
403 iTCO_wdt_keepalive();
405 clear_bit(0, &is_active);
410 static ssize_t iTCO_wdt_write (struct file *file, const char __user *data,
411 size_t len, loff_t * ppos)
413 /* See if we got the magic character 'V' and reload the timer */
418 /* note: just in case someone wrote the magic character
419 * five months ago... */
422 /* scan to see whether or not we got the magic character */
423 for (i = 0; i != len; i++) {
425 if (get_user(c, data+i))
432 /* someone wrote to us, we should reload the timer */
433 iTCO_wdt_keepalive();
438 static int iTCO_wdt_ioctl (struct inode *inode, struct file *file,
439 unsigned int cmd, unsigned long arg)
441 int new_options, retval = -EINVAL;
443 void __user *argp = (void __user *)arg;
444 int __user *p = argp;
445 static struct watchdog_info ident = {
446 .options = WDIOF_SETTIMEOUT |
447 WDIOF_KEEPALIVEPING |
449 .firmware_version = 0,
450 .identity = DRV_NAME,
454 case WDIOC_GETSUPPORT:
455 return copy_to_user(argp, &ident,
456 sizeof (ident)) ? -EFAULT : 0;
458 case WDIOC_GETSTATUS:
459 case WDIOC_GETBOOTSTATUS:
460 return put_user(0, p);
462 case WDIOC_KEEPALIVE:
463 iTCO_wdt_keepalive();
466 case WDIOC_SETOPTIONS:
468 if (get_user(new_options, p))
471 if (new_options & WDIOS_DISABLECARD) {
476 if (new_options & WDIOS_ENABLECARD) {
477 iTCO_wdt_keepalive();
485 case WDIOC_SETTIMEOUT:
487 if (get_user(new_heartbeat, p))
490 if (iTCO_wdt_set_heartbeat(new_heartbeat))
493 iTCO_wdt_keepalive();
497 case WDIOC_GETTIMEOUT:
498 return put_user(heartbeat, p);
500 case WDIOC_GETTIMELEFT:
504 if (iTCO_wdt_get_timeleft(&time_left))
507 return put_user(time_left, p);
519 static struct file_operations iTCO_wdt_fops = {
520 .owner = THIS_MODULE,
522 .write = iTCO_wdt_write,
523 .ioctl = iTCO_wdt_ioctl,
524 .open = iTCO_wdt_open,
525 .release = iTCO_wdt_release,
528 static struct miscdevice iTCO_wdt_miscdev = {
529 .minor = WATCHDOG_MINOR,
531 .fops = &iTCO_wdt_fops,
535 * Init & exit routines
538 static int iTCO_wdt_init(struct pci_dev *pdev, const struct pci_device_id *ent, struct platform_device *dev)
546 * Find the ACPI/PM base I/O address which is the base
547 * for the TCO registers (TCOBASE=ACPIBASE + 0x60)
548 * ACPIBASE is bits [15:7] from 0x40-0x43
550 pci_read_config_dword(pdev, 0x40, &base_address);
551 base_address &= 0x00007f80;
552 if (base_address == 0x00000000) {
553 /* Something's wrong here, ACPIBASE has to be set */
554 printk(KERN_ERR PFX "failed to get TCOBASE address\n");
558 iTCO_wdt_private.iTCO_version = iTCO_chipset_info[ent->driver_data].iTCO_version;
559 iTCO_wdt_private.ACPIBASE = base_address;
560 iTCO_wdt_private.pdev = pdev;
562 /* Get the Memory-Mapped GCS register, we need it for the NO_REBOOT flag (TCO v2) */
563 /* To get access to it you have to read RCBA from PCI Config space 0xf0
564 and use it as base. GCS = RCBA + ICH6_GCS(0x3410). */
565 if (iTCO_wdt_private.iTCO_version == 2) {
566 pci_read_config_dword(pdev, 0xf0, &base_address);
567 RCBA = base_address & 0xffffc000;
568 iTCO_wdt_private.gcs = ioremap((RCBA + 0x3410),4);
571 /* Check chipset's NO_REBOOT bit */
572 if (iTCO_wdt_unset_NO_REBOOT_bit()) {
573 printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, reboot disabled by hardware\n");
574 ret = -ENODEV; /* Cannot reset NO_REBOOT bit */
578 /* Set the NO_REBOOT bit to prevent later reboots, just for sure */
579 iTCO_wdt_set_NO_REBOOT_bit();
581 /* Set the TCO_EN bit in SMI_EN register */
582 if (!request_region(SMI_EN, 4, "iTCO_wdt")) {
583 printk(KERN_ERR PFX "I/O address 0x%04lx already in use\n",
589 val32 &= 0xffffdfff; /* Turn off SMI clearing watchdog */
591 release_region(SMI_EN, 4);
593 /* The TCO I/O registers reside in a 32-byte range pointed to by the TCOBASE value */
594 if (!request_region (TCOBASE, 0x20, "iTCO_wdt")) {
595 printk (KERN_ERR PFX "I/O address 0x%04lx already in use\n",
601 printk(KERN_INFO PFX "Found a %s TCO device (Version=%d, TCOBASE=0x%04lx)\n",
602 iTCO_chipset_info[ent->driver_data].name,
603 iTCO_chipset_info[ent->driver_data].iTCO_version,
606 /* Clear out the (probably old) status */
610 /* Make sure the watchdog is not running */
613 /* Check that the heartbeat value is within it's range ; if not reset to the default */
614 if (iTCO_wdt_set_heartbeat(heartbeat)) {
615 iTCO_wdt_set_heartbeat(WATCHDOG_HEARTBEAT);
616 printk(KERN_INFO PFX "heartbeat value must be 2<heartbeat<39 (TCO v1) or 613 (TCO v2), using %d\n",
620 ret = misc_register(&iTCO_wdt_miscdev);
622 printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
623 WATCHDOG_MINOR, ret);
627 printk (KERN_INFO PFX "initialized. heartbeat=%d sec (nowayout=%d)\n",
628 heartbeat, nowayout);
633 release_region (TCOBASE, 0x20);
635 if (iTCO_wdt_private.iTCO_version == 2)
636 iounmap(iTCO_wdt_private.gcs);
637 pci_dev_put(iTCO_wdt_private.pdev);
638 iTCO_wdt_private.ACPIBASE = 0;
642 static void iTCO_wdt_cleanup(void)
644 /* Stop the timer before we leave */
649 misc_deregister(&iTCO_wdt_miscdev);
650 release_region(TCOBASE, 0x20);
651 if (iTCO_wdt_private.iTCO_version == 2)
652 iounmap(iTCO_wdt_private.gcs);
653 pci_dev_put(iTCO_wdt_private.pdev);
654 iTCO_wdt_private.ACPIBASE = 0;
657 static int iTCO_wdt_probe(struct platform_device *dev)
660 struct pci_dev *pdev = NULL;
661 const struct pci_device_id *ent;
663 spin_lock_init(&iTCO_wdt_private.io_lock);
665 for_each_pci_dev(pdev) {
666 ent = pci_match_id(iTCO_wdt_pci_tbl, pdev);
668 if (!(iTCO_wdt_init(pdev, ent, dev))) {
676 printk(KERN_INFO PFX "No card detected\n");
683 static int iTCO_wdt_remove(struct platform_device *dev)
685 if (iTCO_wdt_private.ACPIBASE)
691 static void iTCO_wdt_shutdown(struct platform_device *dev)
696 #define iTCO_wdt_suspend NULL
697 #define iTCO_wdt_resume NULL
699 static struct platform_driver iTCO_wdt_driver = {
700 .probe = iTCO_wdt_probe,
701 .remove = iTCO_wdt_remove,
702 .shutdown = iTCO_wdt_shutdown,
703 .suspend = iTCO_wdt_suspend,
704 .resume = iTCO_wdt_resume,
706 .owner = THIS_MODULE,
711 static int __init iTCO_wdt_init_module(void)
715 printk(KERN_INFO PFX "Intel TCO WatchDog Timer Driver v%s (%s)\n",
716 DRV_VERSION, DRV_RELDATE);
718 err = platform_driver_register(&iTCO_wdt_driver);
722 iTCO_wdt_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
723 if (IS_ERR(iTCO_wdt_platform_device)) {
724 err = PTR_ERR(iTCO_wdt_platform_device);
725 goto unreg_platform_driver;
730 unreg_platform_driver:
731 platform_driver_unregister(&iTCO_wdt_driver);
735 static void __exit iTCO_wdt_cleanup_module(void)
737 platform_device_unregister(iTCO_wdt_platform_device);
738 platform_driver_unregister(&iTCO_wdt_driver);
739 printk(KERN_INFO PFX "Watchdog Module Unloaded.\n");
742 module_init(iTCO_wdt_init_module);
743 module_exit(iTCO_wdt_cleanup_module);
745 MODULE_AUTHOR("Wim Van Sebroeck <wim@iguana.be>");
746 MODULE_DESCRIPTION("Intel TCO WatchDog Timer Driver");
747 MODULE_VERSION(DRV_VERSION);
748 MODULE_LICENSE("GPL");
749 MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);