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path: root/drivers/watchdog/iTCO_wdt.c
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Diffstat (limited to 'drivers/watchdog/iTCO_wdt.c')
-rw-r--r--drivers/watchdog/iTCO_wdt.c310
1 files changed, 152 insertions, 158 deletions
diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c
index 95ba985bd341..bfb93bc2ca9f 100644
--- a/drivers/watchdog/iTCO_wdt.c
+++ b/drivers/watchdog/iTCO_wdt.c
@@ -55,9 +55,9 @@
55 */ 55 */
56 56
57/* Module and version information */ 57/* Module and version information */
58#define DRV_NAME "iTCO_wdt" 58#define DRV_NAME "iTCO_wdt"
59#define DRV_VERSION "1.03" 59#define DRV_VERSION "1.03"
60#define DRV_RELDATE "30-Apr-2008" 60#define DRV_RELDATE "30-Apr-2008"
61#define PFX DRV_NAME ": " 61#define PFX DRV_NAME ": "
62 62
63/* Includes */ 63/* Includes */
@@ -66,7 +66,8 @@
66#include <linux/types.h> /* For standard types (like size_t) */ 66#include <linux/types.h> /* For standard types (like size_t) */
67#include <linux/errno.h> /* For the -ENODEV/... values */ 67#include <linux/errno.h> /* For the -ENODEV/... values */
68#include <linux/kernel.h> /* For printk/panic/... */ 68#include <linux/kernel.h> /* For printk/panic/... */
69#include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */ 69#include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV
70 (WATCHDOG_MINOR) */
70#include <linux/watchdog.h> /* For the watchdog specific items */ 71#include <linux/watchdog.h> /* For the watchdog specific items */
71#include <linux/init.h> /* For __init/__exit/... */ 72#include <linux/init.h> /* For __init/__exit/... */
72#include <linux/fs.h> /* For file operations */ 73#include <linux/fs.h> /* For file operations */
@@ -74,9 +75,10 @@
74#include <linux/pci.h> /* For pci functions */ 75#include <linux/pci.h> /* For pci functions */
75#include <linux/ioport.h> /* For io-port access */ 76#include <linux/ioport.h> /* For io-port access */
76#include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */ 77#include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */
78#include <linux/uaccess.h> /* For copy_to_user/put_user/... */
79#include <linux/io.h> /* For inb/outb/... */
77 80
78#include <asm/uaccess.h> /* For copy_to_user/put_user/... */ 81#include "iTCO_vendor.h"
79#include <asm/io.h> /* For inb/outb/... */
80 82
81/* TCO related info */ 83/* TCO related info */
82enum iTCO_chipsets { 84enum iTCO_chipsets {
@@ -105,7 +107,7 @@ enum iTCO_chipsets {
105 TCO_ICH9, /* ICH9 */ 107 TCO_ICH9, /* ICH9 */
106 TCO_ICH9R, /* ICH9R */ 108 TCO_ICH9R, /* ICH9R */
107 TCO_ICH9DH, /* ICH9DH */ 109 TCO_ICH9DH, /* ICH9DH */
108 TCO_ICH9DO, /* ICH9DO */ 110 TCO_ICH9DO, /* ICH9DO */
109 TCO_631XESB, /* 631xESB/632xESB */ 111 TCO_631XESB, /* 631xESB/632xESB */
110}; 112};
111 113
@@ -140,7 +142,7 @@ static struct {
140 {"ICH9DH", 2}, 142 {"ICH9DH", 2},
141 {"ICH9DO", 2}, 143 {"ICH9DO", 2},
142 {"631xESB/632xESB", 2}, 144 {"631xESB/632xESB", 2},
143 {NULL,0} 145 {NULL, 0}
144}; 146};
145 147
146#define ITCO_PCI_DEVICE(dev, data) \ 148#define ITCO_PCI_DEVICE(dev, data) \
@@ -159,32 +161,32 @@ static struct {
159 * functions that probably will be registered by other drivers. 161 * functions that probably will be registered by other drivers.
160 */ 162 */
161static struct pci_device_id iTCO_wdt_pci_tbl[] = { 163static struct pci_device_id iTCO_wdt_pci_tbl[] = {
162 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AA_0, TCO_ICH )}, 164 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AA_0, TCO_ICH)},
163 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AB_0, TCO_ICH0 )}, 165 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AB_0, TCO_ICH0)},
164 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_0, TCO_ICH2 )}, 166 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_0, TCO_ICH2)},
165 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_10, TCO_ICH2M )}, 167 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_10, TCO_ICH2M)},
166 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_0, TCO_ICH3 )}, 168 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_0, TCO_ICH3)},
167 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_12, TCO_ICH3M )}, 169 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_12, TCO_ICH3M)},
168 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_0, TCO_ICH4 )}, 170 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_0, TCO_ICH4)},
169 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_12, TCO_ICH4M )}, 171 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_12, TCO_ICH4M)},
170 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801E_0, TCO_CICH )}, 172 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801E_0, TCO_CICH)},
171 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801EB_0, TCO_ICH5 )}, 173 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801EB_0, TCO_ICH5)},
172 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ESB_1, TCO_6300ESB)}, 174 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ESB_1, TCO_6300ESB)},
173 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_0, TCO_ICH6 )}, 175 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_0, TCO_ICH6)},
174 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_1, TCO_ICH6M )}, 176 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_1, TCO_ICH6M)},
175 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_2, TCO_ICH6W )}, 177 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_2, TCO_ICH6W)},
176 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_0, TCO_ICH7 )}, 178 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_0, TCO_ICH7)},
177 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_1, TCO_ICH7M )}, 179 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_1, TCO_ICH7M)},
178 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_31, TCO_ICH7MDH)}, 180 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_31, TCO_ICH7MDH)},
179 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_0, TCO_ICH8 )}, 181 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_0, TCO_ICH8)},
180 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_1, TCO_ICH8ME )}, 182 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_1, TCO_ICH8ME)},
181 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_2, TCO_ICH8DH )}, 183 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_2, TCO_ICH8DH)},
182 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_3, TCO_ICH8DO )}, 184 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_3, TCO_ICH8DO)},
183 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_4, TCO_ICH8M )}, 185 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_4, TCO_ICH8M)},
184 { ITCO_PCI_DEVICE(0x2918, TCO_ICH9 )}, 186 { ITCO_PCI_DEVICE(0x2918, TCO_ICH9)},
185 { ITCO_PCI_DEVICE(0x2916, TCO_ICH9R )}, 187 { ITCO_PCI_DEVICE(0x2916, TCO_ICH9R)},
186 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH9_2, TCO_ICH9DH )}, 188 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH9_2, TCO_ICH9DH)},
187 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH9_4, TCO_ICH9DO )}, 189 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH9_4, TCO_ICH9DO)},
188 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ESB2_0, TCO_631XESB)}, 190 { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ESB2_0, TCO_631XESB)},
189 { ITCO_PCI_DEVICE(0x2671, TCO_631XESB)}, 191 { ITCO_PCI_DEVICE(0x2671, TCO_631XESB)},
190 { ITCO_PCI_DEVICE(0x2672, TCO_631XESB)}, 192 { ITCO_PCI_DEVICE(0x2672, TCO_631XESB)},
@@ -203,13 +205,15 @@ static struct pci_device_id iTCO_wdt_pci_tbl[] = {
203 { ITCO_PCI_DEVICE(0x267f, TCO_631XESB)}, 205 { ITCO_PCI_DEVICE(0x267f, TCO_631XESB)},
204 { 0, }, /* End of list */ 206 { 0, }, /* End of list */
205}; 207};
206MODULE_DEVICE_TABLE (pci, iTCO_wdt_pci_tbl); 208MODULE_DEVICE_TABLE(pci, iTCO_wdt_pci_tbl);
207 209
208/* Address definitions for the TCO */ 210/* Address definitions for the TCO */
209#define TCOBASE iTCO_wdt_private.ACPIBASE + 0x60 /* TCO base address */ 211/* TCO base address */
210#define SMI_EN iTCO_wdt_private.ACPIBASE + 0x30 /* SMI Control and Enable Register */ 212#define TCOBASE iTCO_wdt_private.ACPIBASE + 0x60
213/* SMI Control and Enable Register */
214#define SMI_EN iTCO_wdt_private.ACPIBASE + 0x30
211 215
212#define TCO_RLD TCOBASE + 0x00 /* TCO Timer Reload and Current Value */ 216#define TCO_RLD TCOBASE + 0x00 /* TCO Timer Reload and Curr. Value */
213#define TCOv1_TMR TCOBASE + 0x01 /* TCOv1 Timer Initial Value */ 217#define TCOv1_TMR TCOBASE + 0x01 /* TCOv1 Timer Initial Value */
214#define TCO_DAT_IN TCOBASE + 0x02 /* TCO Data In Register */ 218#define TCO_DAT_IN TCOBASE + 0x02 /* TCO Data In Register */
215#define TCO_DAT_OUT TCOBASE + 0x03 /* TCO Data Out Register */ 219#define TCO_DAT_OUT TCOBASE + 0x03 /* TCO Data Out Register */
@@ -222,15 +226,21 @@ MODULE_DEVICE_TABLE (pci, iTCO_wdt_pci_tbl);
222/* internal variables */ 226/* internal variables */
223static unsigned long is_active; 227static unsigned long is_active;
224static char expect_release; 228static char expect_release;
225static struct { /* this is private data for the iTCO_wdt device */ 229static struct { /* this is private data for the iTCO_wdt device */
226 unsigned int iTCO_version; /* TCO version/generation */ 230 /* TCO version/generation */
227 unsigned long ACPIBASE; /* The cards ACPIBASE address (TCOBASE = ACPIBASE+0x60) */ 231 unsigned int iTCO_version;
228 unsigned long __iomem *gcs; /* NO_REBOOT flag is Memory-Mapped GCS register bit 5 (TCO version 2) */ 232 /* The cards ACPIBASE address (TCOBASE = ACPIBASE+0x60) */
229 spinlock_t io_lock; /* the lock for io operations */ 233 unsigned long ACPIBASE;
230 struct pci_dev *pdev; /* the PCI-device */ 234 /* NO_REBOOT flag is Memory-Mapped GCS register bit 5 (TCO version 2)*/
235 unsigned long __iomem *gcs;
236 /* the lock for io operations */
237 spinlock_t io_lock;
238 /* the PCI-device */
239 struct pci_dev *pdev;
231} iTCO_wdt_private; 240} iTCO_wdt_private;
232 241
233static struct platform_device *iTCO_wdt_platform_device; /* the watchdog platform device */ 242/* the watchdog platform device */
243static struct platform_device *iTCO_wdt_platform_device;
234 244
235/* module parameters */ 245/* module parameters */
236#define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat */ 246#define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat */
@@ -240,22 +250,9 @@ MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2<heartbeat<39 (TCO
240 250
241static int nowayout = WATCHDOG_NOWAYOUT; 251static int nowayout = WATCHDOG_NOWAYOUT;
242module_param(nowayout, int, 0); 252module_param(nowayout, int, 0);
243MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); 253MODULE_PARM_DESC(nowayout,
244 254 "Watchdog cannot be stopped once started (default="
245/* iTCO Vendor Specific Support hooks */ 255 __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
246#ifdef CONFIG_ITCO_VENDOR_SUPPORT
247extern void iTCO_vendor_pre_start(unsigned long, unsigned int);
248extern void iTCO_vendor_pre_stop(unsigned long);
249extern void iTCO_vendor_pre_keepalive(unsigned long, unsigned int);
250extern void iTCO_vendor_pre_set_heartbeat(unsigned int);
251extern int iTCO_vendor_check_noreboot_on(void);
252#else
253#define iTCO_vendor_pre_start(acpibase, heartbeat) {}
254#define iTCO_vendor_pre_stop(acpibase) {}
255#define iTCO_vendor_pre_keepalive(acpibase,heartbeat) {}
256#define iTCO_vendor_pre_set_heartbeat(heartbeat) {}
257#define iTCO_vendor_check_noreboot_on() 1 /* 1=check noreboot; 0=don't check */
258#endif
259 256
260/* 257/*
261 * Some TCO specific functions 258 * Some TCO specific functions
@@ -369,11 +366,10 @@ static int iTCO_wdt_keepalive(void)
369 iTCO_vendor_pre_keepalive(iTCO_wdt_private.ACPIBASE, heartbeat); 366 iTCO_vendor_pre_keepalive(iTCO_wdt_private.ACPIBASE, heartbeat);
370 367
371 /* Reload the timer by writing to the TCO Timer Counter register */ 368 /* Reload the timer by writing to the TCO Timer Counter register */
372 if (iTCO_wdt_private.iTCO_version == 2) { 369 if (iTCO_wdt_private.iTCO_version == 2)
373 outw(0x01, TCO_RLD); 370 outw(0x01, TCO_RLD);
374 } else if (iTCO_wdt_private.iTCO_version == 1) { 371 else if (iTCO_wdt_private.iTCO_version == 1)
375 outb(0x01, TCO_RLD); 372 outb(0x01, TCO_RLD);
376 }
377 373
378 spin_unlock(&iTCO_wdt_private.io_lock); 374 spin_unlock(&iTCO_wdt_private.io_lock);
379 return 0; 375 return 0;
@@ -425,7 +421,7 @@ static int iTCO_wdt_set_heartbeat(int t)
425 return 0; 421 return 0;
426} 422}
427 423
428static int iTCO_wdt_get_timeleft (int *time_left) 424static int iTCO_wdt_get_timeleft(int *time_left)
429{ 425{
430 unsigned int val16; 426 unsigned int val16;
431 unsigned char val8; 427 unsigned char val8;
@@ -454,7 +450,7 @@ static int iTCO_wdt_get_timeleft (int *time_left)
454 * /dev/watchdog handling 450 * /dev/watchdog handling
455 */ 451 */
456 452
457static int iTCO_wdt_open (struct inode *inode, struct file *file) 453static int iTCO_wdt_open(struct inode *inode, struct file *file)
458{ 454{
459 /* /dev/watchdog can only be opened once */ 455 /* /dev/watchdog can only be opened once */
460 if (test_and_set_bit(0, &is_active)) 456 if (test_and_set_bit(0, &is_active))
@@ -468,7 +464,7 @@ static int iTCO_wdt_open (struct inode *inode, struct file *file)
468 return nonseekable_open(inode, file); 464 return nonseekable_open(inode, file);
469} 465}
470 466
471static int iTCO_wdt_release (struct inode *inode, struct file *file) 467static int iTCO_wdt_release(struct inode *inode, struct file *file)
472{ 468{
473 /* 469 /*
474 * Shut off the timer. 470 * Shut off the timer.
@@ -476,7 +472,8 @@ static int iTCO_wdt_release (struct inode *inode, struct file *file)
476 if (expect_release == 42) { 472 if (expect_release == 42) {
477 iTCO_wdt_stop(); 473 iTCO_wdt_stop();
478 } else { 474 } else {
479 printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n"); 475 printk(KERN_CRIT PFX
476 "Unexpected close, not stopping watchdog!\n");
480 iTCO_wdt_keepalive(); 477 iTCO_wdt_keepalive();
481 } 478 }
482 clear_bit(0, &is_active); 479 clear_bit(0, &is_active);
@@ -484,22 +481,23 @@ static int iTCO_wdt_release (struct inode *inode, struct file *file)
484 return 0; 481 return 0;
485} 482}
486 483
487static ssize_t iTCO_wdt_write (struct file *file, const char __user *data, 484static ssize_t iTCO_wdt_write(struct file *file, const char __user *data,
488 size_t len, loff_t * ppos) 485 size_t len, loff_t *ppos)
489{ 486{
490 /* See if we got the magic character 'V' and reload the timer */ 487 /* See if we got the magic character 'V' and reload the timer */
491 if (len) { 488 if (len) {
492 if (!nowayout) { 489 if (!nowayout) {
493 size_t i; 490 size_t i;
494 491
495 /* note: just in case someone wrote the magic character 492 /* note: just in case someone wrote the magic
496 * five months ago... */ 493 character five months ago... */
497 expect_release = 0; 494 expect_release = 0;
498 495
499 /* scan to see whether or not we got the magic character */ 496 /* scan to see whether or not we got the
497 magic character */
500 for (i = 0; i != len; i++) { 498 for (i = 0; i != len; i++) {
501 char c; 499 char c;
502 if (get_user(c, data+i)) 500 if (get_user(c, data + i))
503 return -EFAULT; 501 return -EFAULT;
504 if (c == 'V') 502 if (c == 'V')
505 expect_release = 42; 503 expect_release = 42;
@@ -512,8 +510,8 @@ static ssize_t iTCO_wdt_write (struct file *file, const char __user *data,
512 return len; 510 return len;
513} 511}
514 512
515static int iTCO_wdt_ioctl (struct inode *inode, struct file *file, 513static long iTCO_wdt_ioctl(struct file *file, unsigned int cmd,
516 unsigned int cmd, unsigned long arg) 514 unsigned long arg)
517{ 515{
518 int new_options, retval = -EINVAL; 516 int new_options, retval = -EINVAL;
519 int new_heartbeat; 517 int new_heartbeat;
@@ -528,64 +526,52 @@ static int iTCO_wdt_ioctl (struct inode *inode, struct file *file,
528 }; 526 };
529 527
530 switch (cmd) { 528 switch (cmd) {
531 case WDIOC_GETSUPPORT: 529 case WDIOC_GETSUPPORT:
532 return copy_to_user(argp, &ident, 530 return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
533 sizeof (ident)) ? -EFAULT : 0; 531 case WDIOC_GETSTATUS:
534 532 case WDIOC_GETBOOTSTATUS:
535 case WDIOC_GETSTATUS: 533 return put_user(0, p);
536 case WDIOC_GETBOOTSTATUS: 534
537 return put_user(0, p); 535 case WDIOC_SETOPTIONS:
538 536 {
539 case WDIOC_KEEPALIVE: 537 if (get_user(new_options, p))
540 iTCO_wdt_keepalive(); 538 return -EFAULT;
541 return 0; 539
542 540 if (new_options & WDIOS_DISABLECARD) {
543 case WDIOC_SETOPTIONS: 541 iTCO_wdt_stop();
544 { 542 retval = 0;
545 if (get_user(new_options, p))
546 return -EFAULT;
547
548 if (new_options & WDIOS_DISABLECARD) {
549 iTCO_wdt_stop();
550 retval = 0;
551 }
552
553 if (new_options & WDIOS_ENABLECARD) {
554 iTCO_wdt_keepalive();
555 iTCO_wdt_start();
556 retval = 0;
557 }
558
559 return retval;
560 } 543 }
561 544 if (new_options & WDIOS_ENABLECARD) {
562 case WDIOC_SETTIMEOUT:
563 {
564 if (get_user(new_heartbeat, p))
565 return -EFAULT;
566
567 if (iTCO_wdt_set_heartbeat(new_heartbeat))
568 return -EINVAL;
569
570 iTCO_wdt_keepalive(); 545 iTCO_wdt_keepalive();
571 /* Fall */ 546 iTCO_wdt_start();
572 } 547 retval = 0;
573
574 case WDIOC_GETTIMEOUT:
575 return put_user(heartbeat, p);
576
577 case WDIOC_GETTIMELEFT:
578 {
579 int time_left;
580
581 if (iTCO_wdt_get_timeleft(&time_left))
582 return -EINVAL;
583
584 return put_user(time_left, p);
585 } 548 }
549 return retval;
550 }
551 case WDIOC_KEEPALIVE:
552 iTCO_wdt_keepalive();
553 return 0;
586 554
587 default: 555 case WDIOC_SETTIMEOUT:
588 return -ENOTTY; 556 {
557 if (get_user(new_heartbeat, p))
558 return -EFAULT;
559 if (iTCO_wdt_set_heartbeat(new_heartbeat))
560 return -EINVAL;
561 iTCO_wdt_keepalive();
562 /* Fall */
563 }
564 case WDIOC_GETTIMEOUT:
565 return put_user(heartbeat, p);
566 case WDIOC_GETTIMELEFT:
567 {
568 int time_left;
569 if (iTCO_wdt_get_timeleft(&time_left))
570 return -EINVAL;
571 return put_user(time_left, p);
572 }
573 default:
574 return -ENOTTY;
589 } 575 }
590} 576}
591 577
@@ -594,12 +580,12 @@ static int iTCO_wdt_ioctl (struct inode *inode, struct file *file,
594 */ 580 */
595 581
596static const struct file_operations iTCO_wdt_fops = { 582static const struct file_operations iTCO_wdt_fops = {
597 .owner = THIS_MODULE, 583 .owner = THIS_MODULE,
598 .llseek = no_llseek, 584 .llseek = no_llseek,
599 .write = iTCO_wdt_write, 585 .write = iTCO_wdt_write,
600 .ioctl = iTCO_wdt_ioctl, 586 .unlocked_ioctl = iTCO_wdt_ioctl,
601 .open = iTCO_wdt_open, 587 .open = iTCO_wdt_open,
602 .release = iTCO_wdt_release, 588 .release = iTCO_wdt_release,
603}; 589};
604 590
605static struct miscdevice iTCO_wdt_miscdev = { 591static struct miscdevice iTCO_wdt_miscdev = {
@@ -612,7 +598,8 @@ static struct miscdevice iTCO_wdt_miscdev = {
612 * Init & exit routines 598 * Init & exit routines
613 */ 599 */
614 600
615static int __devinit iTCO_wdt_init(struct pci_dev *pdev, const struct pci_device_id *ent, struct platform_device *dev) 601static int __devinit iTCO_wdt_init(struct pci_dev *pdev,
602 const struct pci_device_id *ent, struct platform_device *dev)
616{ 603{
617 int ret; 604 int ret;
618 u32 base_address; 605 u32 base_address;
@@ -632,17 +619,19 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev, const struct pci_device
632 pci_dev_put(pdev); 619 pci_dev_put(pdev);
633 return -ENODEV; 620 return -ENODEV;
634 } 621 }
635 iTCO_wdt_private.iTCO_version = iTCO_chipset_info[ent->driver_data].iTCO_version; 622 iTCO_wdt_private.iTCO_version =
623 iTCO_chipset_info[ent->driver_data].iTCO_version;
636 iTCO_wdt_private.ACPIBASE = base_address; 624 iTCO_wdt_private.ACPIBASE = base_address;
637 iTCO_wdt_private.pdev = pdev; 625 iTCO_wdt_private.pdev = pdev;
638 626
639 /* Get the Memory-Mapped GCS register, we need it for the NO_REBOOT flag (TCO v2) */ 627 /* Get the Memory-Mapped GCS register, we need it for the
640 /* To get access to it you have to read RCBA from PCI Config space 0xf0 628 NO_REBOOT flag (TCO v2). To get access to it you have to
641 and use it as base. GCS = RCBA + ICH6_GCS(0x3410). */ 629 read RCBA from PCI Config space 0xf0 and use it as base.
630 GCS = RCBA + ICH6_GCS(0x3410). */
642 if (iTCO_wdt_private.iTCO_version == 2) { 631 if (iTCO_wdt_private.iTCO_version == 2) {
643 pci_read_config_dword(pdev, 0xf0, &base_address); 632 pci_read_config_dword(pdev, 0xf0, &base_address);
644 RCBA = base_address & 0xffffc000; 633 RCBA = base_address & 0xffffc000;
645 iTCO_wdt_private.gcs = ioremap((RCBA + 0x3410),4); 634 iTCO_wdt_private.gcs = ioremap((RCBA + 0x3410), 4);
646 } 635 }
647 636
648 /* Check chipset's NO_REBOOT bit */ 637 /* Check chipset's NO_REBOOT bit */
@@ -657,8 +646,8 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev, const struct pci_device
657 646
658 /* Set the TCO_EN bit in SMI_EN register */ 647 /* Set the TCO_EN bit in SMI_EN register */
659 if (!request_region(SMI_EN, 4, "iTCO_wdt")) { 648 if (!request_region(SMI_EN, 4, "iTCO_wdt")) {
660 printk(KERN_ERR PFX "I/O address 0x%04lx already in use\n", 649 printk(KERN_ERR PFX
661 SMI_EN ); 650 "I/O address 0x%04lx already in use\n", SMI_EN);
662 ret = -EIO; 651 ret = -EIO;
663 goto out; 652 goto out;
664 } 653 }
@@ -667,18 +656,20 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev, const struct pci_device
667 outl(val32, SMI_EN); 656 outl(val32, SMI_EN);
668 release_region(SMI_EN, 4); 657 release_region(SMI_EN, 4);
669 658
670 /* The TCO I/O registers reside in a 32-byte range pointed to by the TCOBASE value */ 659 /* The TCO I/O registers reside in a 32-byte range pointed to
671 if (!request_region (TCOBASE, 0x20, "iTCO_wdt")) { 660 by the TCOBASE value */
672 printk (KERN_ERR PFX "I/O address 0x%04lx already in use\n", 661 if (!request_region(TCOBASE, 0x20, "iTCO_wdt")) {
662 printk(KERN_ERR PFX "I/O address 0x%04lx already in use\n",
673 TCOBASE); 663 TCOBASE);
674 ret = -EIO; 664 ret = -EIO;
675 goto out; 665 goto out;
676 } 666 }
677 667
678 printk(KERN_INFO PFX "Found a %s TCO device (Version=%d, TCOBASE=0x%04lx)\n", 668 printk(KERN_INFO PFX
679 iTCO_chipset_info[ent->driver_data].name, 669 "Found a %s TCO device (Version=%d, TCOBASE=0x%04lx)\n",
680 iTCO_chipset_info[ent->driver_data].iTCO_version, 670 iTCO_chipset_info[ent->driver_data].name,
681 TCOBASE); 671 iTCO_chipset_info[ent->driver_data].iTCO_version,
672 TCOBASE);
682 673
683 /* Clear out the (probably old) status */ 674 /* Clear out the (probably old) status */
684 outb(0, TCO1_STS); 675 outb(0, TCO1_STS);
@@ -687,27 +678,29 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev, const struct pci_device
687 /* Make sure the watchdog is not running */ 678 /* Make sure the watchdog is not running */
688 iTCO_wdt_stop(); 679 iTCO_wdt_stop();
689 680
690 /* Check that the heartbeat value is within it's range ; if not reset to the default */ 681 /* Check that the heartbeat value is within it's range;
682 if not reset to the default */
691 if (iTCO_wdt_set_heartbeat(heartbeat)) { 683 if (iTCO_wdt_set_heartbeat(heartbeat)) {
692 iTCO_wdt_set_heartbeat(WATCHDOG_HEARTBEAT); 684 iTCO_wdt_set_heartbeat(WATCHDOG_HEARTBEAT);
693 printk(KERN_INFO PFX "heartbeat value must be 2<heartbeat<39 (TCO v1) or 613 (TCO v2), using %d\n", 685 printk(KERN_INFO PFX "heartbeat value must be 2 < heartbeat < 39 (TCO v1) or 613 (TCO v2), using %d\n",
694 heartbeat); 686 heartbeat);
695 } 687 }
696 688
697 ret = misc_register(&iTCO_wdt_miscdev); 689 ret = misc_register(&iTCO_wdt_miscdev);
698 if (ret != 0) { 690 if (ret != 0) {
699 printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n", 691 printk(KERN_ERR PFX
700 WATCHDOG_MINOR, ret); 692 "cannot register miscdev on minor=%d (err=%d)\n",
693 WATCHDOG_MINOR, ret);
701 goto unreg_region; 694 goto unreg_region;
702 } 695 }
703 696
704 printk (KERN_INFO PFX "initialized. heartbeat=%d sec (nowayout=%d)\n", 697 printk(KERN_INFO PFX "initialized. heartbeat=%d sec (nowayout=%d)\n",
705 heartbeat, nowayout); 698 heartbeat, nowayout);
706 699
707 return 0; 700 return 0;
708 701
709unreg_region: 702unreg_region:
710 release_region (TCOBASE, 0x20); 703 release_region(TCOBASE, 0x20);
711out: 704out:
712 if (iTCO_wdt_private.iTCO_version == 2) 705 if (iTCO_wdt_private.iTCO_version == 2)
713 iounmap(iTCO_wdt_private.gcs); 706 iounmap(iTCO_wdt_private.gcs);
@@ -796,7 +789,8 @@ static int __init iTCO_wdt_init_module(void)
796 if (err) 789 if (err)
797 return err; 790 return err;
798 791
799 iTCO_wdt_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0); 792 iTCO_wdt_platform_device = platform_device_register_simple(DRV_NAME,
793 -1, NULL, 0);
800 if (IS_ERR(iTCO_wdt_platform_device)) { 794 if (IS_ERR(iTCO_wdt_platform_device)) {
801 err = PTR_ERR(iTCO_wdt_platform_device); 795 err = PTR_ERR(iTCO_wdt_platform_device);
802 goto unreg_platform_driver; 796 goto unreg_platform_driver;
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-10 20:23:40 -0500