static long iTCO_wdt_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
int new_options, retval = -EINVAL;
int new_heartbeat;
void __user *argp = (void __user *)arg;
int __user *p = argp;
static const struct watchdog_info ident = {
.options = WDIOF_SETTIMEOUT |
WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
.firmware_version = 0,
.identity = DRV_NAME,
};
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_SETOPTIONS:
{
if (get_user(new_options, p))
return -EFAULT;
if (new_options & WDIOS_DISABLECARD) {
iTCO_wdt_stop();
retval = 0;
}
if (new_options & WDIOS_ENABLECARD) {
iTCO_wdt_keepalive();
iTCO_wdt_start();
retval = 0;
}
return retval;
}
case WDIOC_KEEPALIVE:
iTCO_wdt_keepalive();
return 0;
case WDIOC_SETTIMEOUT:
{
if (get_user(new_heartbeat, p))
return -EFAULT;
if (iTCO_wdt_set_heartbeat(new_heartbeat))
return -EINVAL;
iTCO_wdt_keepalive();
/* Fall */
}
case WDIOC_GETTIMEOUT:
return put_user(heartbeat, p);
case WDIOC_GETTIMELEFT:
{
int time_left;
if (iTCO_wdt_get_timeleft(&time_left))
return -EINVAL;
return put_user(time_left, p);
}
default:
return -ENOTTY;
}
}
/*
* Kernel Interfaces
*/
static const struct file_operations iTCO_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = iTCO_wdt_write,
.unlocked_ioctl = iTCO_wdt_ioctl,
.open = iTCO_wdt_open,
.release = iTCO_wdt_release,
};
static struct miscdevice iTCO_wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &iTCO_wdt_fops,
};
/*
* Reboot notifier
*/
static int TCO_reboot_notifier(struct notifier_block *this,
unsigned long code,
void *another_unused)
{
if (code == SYS_HALT || code == SYS_POWER_OFF) {
iTCO_wdt_set_reset_type(TCO_POLICY_HALT);
}
iTCO_wdt_last_kick(5);
#ifdef CONFIG_DEBUG_FS
if (iTCO_wdt_private.panic_reboot_notifier) {
BUG();
}
#endif
return NOTIFY_DONE;
}
static irqreturn_t tco_irq_handler(int irq, void *arg)
{
unsigned long val32;
pr_warn("[SHTDWN] %s, WATCHDOG TIMEOUT HANDLER!\n", __func__);
/* reduce the timeout to the minimum, but sufficient for tracing */
iTCO_wdt_set_heartbeat(15);
iTCO_wdt_keepalive();
trigger_all_cpu_backtrace();
panic("Kernel Watchdog");
/* This code should not be reached */
return IRQ_HANDLED;
}
/*
* Init & exit routines
*/
static int iTCO_wdt_init(struct pci_dev *pdev,
const struct pci_device_id *ent, struct platform_device *dev)
{
int ret;
u32 base_address;
unsigned long val32;
/*
* Find the ACPI/PM base I/O address which is the base
* for the TCO registers (TCOBASE=ACPIBASE + 0x60)
* ACPIBASE is bits [15:7] from 0x40-0x43
*/
pci_read_config_dword(pdev, 0x40, &base_address);
base_address &= 0x0000ff80;
if (base_address == 0x00000000) {
/* Something's wrong here, ACPIBASE has to be set */
pr_err("failed to get TCOBASE address, device disabled by hardware/BIOS\n");
return -ENODEV;
}
iTCO_wdt_private.iTCO_version =
iTCO_chipset_info[ent->driver_data].iTCO_version;
iTCO_wdt_private.ACPIBASE = base_address;
iTCO_wdt_private.pdev = pdev;
pci_read_config_dword(pdev, 0x44, &pmc_base_address);
pmc_base_address &= 0xFFFFFE00;
/*
* Disable watchdog on command-line demand
*/
if (strstr(saved_command_line, "disable_kernel_watchdog=1")) {
pr_warn("disable_kernel_watchdog=1 watchdog will not be started\n");
iTCO_wdt_private.enable = false;
/* Set the NO_REBOOT bit to prevent later reboots */
iTCO_wdt_set_NO_REBOOT_bit();
/* Ensure Wdt is well stopped in case started by IAFW */
iTCO_wdt_stop();
} else {
iTCO_wdt_private.enable = true;
/* Check chipset's NO_REBOOT bit */
if (iTCO_wdt_unset_NO_REBOOT_bit()) {
pr_err("unable to reset NO_REBOOT flag, device disabled by hardware/BIOS\n");
ret = -ENODEV; /* Cannot reset NO_REBOOT bit */
goto out;
}
}
/* The TCO logic uses the TCO_EN bit in the SMI_EN register */
if (!request_region(SMI_EN, 4, "iTCO_wdt")) {
pr_err("I/O address 0x%04lx already in use, device disabled\n",
SMI_EN);
ret = -EIO;
goto out;
}
if (!request_region(SMI_STS, 4, "iTCO_wdt")) {
pr_err("I/O address 0x%04lx already in use, device disabled\n",
SMI_STS);
ret = -EIO;
goto unreg_smi_sts;
}
if (turn_SMI_watchdog_clear_off >= iTCO_wdt_private.iTCO_version) {
/* Bit 13: TCO_EN -> 0 = Disables TCO logic generating an SMI# */
val32 = inl(SMI_EN);
val32 &= ~TCO_EN_BIT; /* Turn off TCO watchdog timer */
outl(val32, SMI_EN);
}
/* The TCO I/O registers reside in a 32-byte range pointed to
by the TCOBASE value */
if (!request_region(TCOBASE, 0x20, "iTCO_wdt")) {
pr_err("I/O address 0x%04lx already in use, device disabled\n",
TCOBASE);
ret = -EIO;
goto unreg_smi_en;
}
pr_info("Found a %s TCO device (Version=%d, TCOBASE=0x%04lx)\n",
iTCO_chipset_info[ent->driver_data].name,
iTCO_chipset_info[ent->driver_data].iTCO_version,
TCOBASE);
/* Check that the heartbeat value is within it's range;
if not reset to the default */
if (iTCO_wdt_set_heartbeat(heartbeat)) {
iTCO_wdt_set_heartbeat(WATCHDOG_HEARTBEAT);
pr_info("timeout value out of range, using %d\n", heartbeat);
}
ret = misc_register(&iTCO_wdt_miscdev);
if (ret != 0) {
pr_err("cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
goto unreg_region;
}
pr_info("initialized. heartbeat=%d sec (nowayout=%d)\n",
heartbeat, nowayout);
/* Reset OS policy */
iTCO_wdt_set_reset_type(TCO_POLICY_NORM);
ret = acpi_register_gsi(NULL, TCO_WARNING_IRQ,
ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_HIGH);
if (ret < 0) {
pr_err("failed to configure TCO warning IRQ %d\n", TCO_WARNING_IRQ);
goto misc_unreg;
}
ret = request_irq(TCO_WARNING_IRQ, tco_irq_handler, 0, "tco_watchdog", NULL);
if (ret < 0) {
pr_err("failed to request TCO warning IRQ %d\n", TCO_WARNING_IRQ);
goto gsi_unreg;
}
/* Clear old TCO timeout status */
val32 = TCO_TIMEOUT_BIT | SECOND_TO_STS_BIT;
outl(val32, TCO1_STS);
/* Clear the SMI status */
outl(TCO_STS_BIT, SMI_STS);
/* Enable SMI for TCO */
val32 = inl(SMI_EN);
val32 |= TCO_EN_BIT;
outl(val32, SMI_EN);
/* then ensure that PMC is ready to handle next SMI */
val32 |= EOS_BIT;
outl(val32, SMI_EN);
reboot_notifier.notifier_call = TCO_reboot_notifier;
reboot_notifier.priority = 1;
ret = register_reboot_notifier(&reboot_notifier);
if (ret)
/* We continue as reboot notifier is not critical for
* watchdog */
pr_err("cannot register reboot notifier %d\n", ret);
return 0;
gsi_unreg:
acpi_unregister_gsi(TCO_WARNING_IRQ);
misc_unreg:
misc_deregister(&iTCO_wdt_miscdev);
unreg_region:
release_region(TCOBASE, 0x20);
unreg_smi_sts:
release_region(SMI_STS, 4);
unreg_smi_en:
release_region(SMI_EN, 4);
out:
iTCO_wdt_private.ACPIBASE = 0;
return ret;
}
static void install_reboot_notifier(void)
{
register_reboot_notifier(&reboot_boot_globals_nb);
}
static int __init sc1200wdt_init(void)
{
int ret;
printk("%s\n", banner);
sema_init(&open_sem, 1);
#if defined CONFIG_PNP
if (isapnp) {
ret = pnp_register_driver(&scl200wdt_pnp_driver);
if (ret)
goto out_clean;
}
#endif
if (io == -1) {
printk(KERN_ERR PFX "io parameter must be specified\n");
ret = -EINVAL;
goto out_pnp;
}
#if defined CONFIG_PNP
/* now that the user has specified an IO port and we haven't detected
* any devices, disable pnp support */
isapnp = 0;
pnp_unregister_driver(&scl200wdt_pnp_driver);
#endif
if (!request_region(io, io_len, SC1200_MODULE_NAME)) {
printk(KERN_ERR PFX "Unable to register IO port %#x\n", io);
ret = -EBUSY;
goto out_pnp;
}
ret = sc1200wdt_probe();
if (ret)
goto out_io;
ret = register_reboot_notifier(&sc1200wdt_notifier);
if (ret) {
printk(KERN_ERR PFX "Unable to register reboot notifier err = %d\n", ret);
goto out_io;
}
ret = misc_register(&sc1200wdt_miscdev);
if (ret) {
printk(KERN_ERR PFX "Unable to register miscdev on minor %d\n", WATCHDOG_MINOR);
goto out_rbt;
}
/* ret = 0 */
out_clean:
return ret;
out_rbt:
unregister_reboot_notifier(&sc1200wdt_notifier);
out_io:
release_region(io, io_len);
out_pnp:
#if defined CONFIG_PNP
if (isapnp)
pnp_unregister_driver(&scl200wdt_pnp_driver);
#endif
goto out_clean;
}
static int ali_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
WDIOF_SETTIMEOUT |
WDIOF_MAGICCLOSE,
.firmware_version = 0,
.identity = "ALi M1535 WatchDog Timer",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident,
sizeof (ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_KEEPALIVE:
ali_keepalive();
return 0;
case WDIOC_SETOPTIONS:
{
int new_options, retval = -EINVAL;
if (get_user (new_options, p))
return -EFAULT;
if (new_options & WDIOS_DISABLECARD) {
ali_stop();
retval = 0;
}
if (new_options & WDIOS_ENABLECARD) {
ali_start();
retval = 0;
}
return retval;
}
case WDIOC_SETTIMEOUT:
{
int new_timeout;
if (get_user(new_timeout, p))
return -EFAULT;
if (ali_settimer(new_timeout))
return -EINVAL;
ali_keepalive();
/* Fall */
}
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
return -ENOIOCTLCMD;
}
}
/*
* ali_open - handle open of ali watchdog
* @inode: inode from VFS
* @file: file from VFS
*
* Open the ALi watchdog device. Ensure only one person opens it
* at a time. Also start the watchdog running.
*/
static int ali_open(struct inode *inode, struct file *file)
{
/* /dev/watchdog can only be opened once */
if (test_and_set_bit(0, &ali_is_open))
return -EBUSY;
/* Activate */
ali_start();
return nonseekable_open(inode, file);
}
/*
* ali_release - close an ALi watchdog
* @inode: inode from VFS
* @file: file from VFS
*
* Close the ALi watchdog device. Actual shutdown of the timer
* only occurs if the magic sequence has been set.
*/
static int ali_release(struct inode *inode, struct file *file)
{
/*
* Shut off the timer.
*/
if (ali_expect_release == 42) {
ali_stop();
} else {
printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
ali_keepalive();
}
clear_bit(0, &ali_is_open);
ali_expect_release = 0;
return 0;
}
/*
* ali_notify_sys - System down notifier
*
* Notifier for system down
*/
static int ali_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
{
if (code==SYS_DOWN || code==SYS_HALT) {
/* Turn the WDT off */
ali_stop();
}
return NOTIFY_DONE;
}
/*
* Data for PCI driver interface
*
* This data only exists for exporting the supported
* PCI ids via MODULE_DEVICE_TABLE. We do not actually
* register a pci_driver, because someone else might one day
* want to register another driver on the same PCI id.
*/
static struct pci_device_id ali_pci_tbl[] = {
{ PCI_VENDOR_ID_AL, 0x1535, PCI_ANY_ID, PCI_ANY_ID,},
{ 0, },
};
MODULE_DEVICE_TABLE(pci, ali_pci_tbl);
/*
* ali_find_watchdog - find a 1535 and 7101
*
* Scans the PCI hardware for a 1535 series bridge and matching 7101
* watchdog device. This may be overtight but it is better to be safe
*/
static int __init ali_find_watchdog(void)
{
struct pci_dev *pdev;
u32 wdog;
/* Check for a 1535 series bridge */
pdev = pci_find_device(PCI_VENDOR_ID_AL, 0x1535, NULL);
if(pdev == NULL)
return -ENODEV;
/* Check for the a 7101 PMU */
pdev = pci_find_device(PCI_VENDOR_ID_AL, 0x7101, NULL);
if(pdev == NULL)
return -ENODEV;
if(pci_enable_device(pdev))
return -EIO;
ali_pci = pdev;
/*
* Initialize the timer bits
*/
pci_read_config_dword(pdev, 0xCC, &wdog);
wdog &= ~0x3F; /* Timer bits */
wdog &= ~((1<<27)|(1<<26)|(1<<25)|(1<<24)); /* Issued events */
wdog &= ~((1<<16)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)); /* No monitor bits */
pci_write_config_dword(pdev, 0xCC, wdog);
return 0;
}
/*
* Kernel Interfaces
*/
static const struct file_operations ali_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = ali_write,
.ioctl = ali_ioctl,
.open = ali_open,
.release = ali_release,
};
static struct miscdevice ali_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &ali_fops,
};
static struct notifier_block ali_notifier = {
.notifier_call = ali_notify_sys,
};
/*
* watchdog_init - module initialiser
*
* Scan for a suitable watchdog and if so initialize it. Return an error
* if we cannot, the error causes the module to unload
*/
static int __init watchdog_init(void)
{
int ret;
spin_lock_init(&ali_lock);
/* Check whether or not the hardware watchdog is there */
if (ali_find_watchdog() != 0) {
return -ENODEV;
}
/* Check that the timeout value is within it's range ; if not reset to the default */
if (timeout < 1 || timeout >= 18000) {
timeout = WATCHDOG_TIMEOUT;
printk(KERN_INFO PFX "timeout value must be 0<timeout<18000, using %d\n",
timeout);
}
/* Calculate the watchdog's timeout */
ali_settimer(timeout);
ret = misc_register(&ali_miscdev);
if (ret != 0) {
printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
goto out;
}
ret = register_reboot_notifier(&ali_notifier);
if (ret != 0) {
printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
ret);
goto unreg_miscdev;
}
printk(KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
out:
return ret;
unreg_miscdev:
misc_deregister(&ali_miscdev);
goto out;
}
/*
* watchdog_exit - module de-initialiser
*
* Called while unloading a successfully installed watchdog module.
*/
static void __exit watchdog_exit(void)
{
/* Stop the timer before we leave */
ali_stop();
/* Deregister */
unregister_reboot_notifier(&ali_notifier);
misc_deregister(&ali_miscdev);
}
static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_timeout;
static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
| WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "W83697HF WDT",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
if (copy_to_user(argp, &ident, sizeof(ident)))
return -EFAULT;
break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_SETOPTIONS:
{
int options, retval = -EINVAL;
if (get_user(options, p))
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
wdt_disable();
retval = 0;
}
if (options & WDIOS_ENABLECARD) {
wdt_enable();
retval = 0;
}
return retval;
}
case WDIOC_KEEPALIVE:
wdt_ping();
break;
case WDIOC_SETTIMEOUT:
if (get_user(new_timeout, p))
return -EFAULT;
if (wdt_set_heartbeat(new_timeout))
return -EINVAL;
wdt_ping();
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
return -ENOTTY;
}
return 0;
}
static int wdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
wdt_enable();
return nonseekable_open(inode, file);
}
static int wdt_close(struct inode *inode, struct file *file)
{
if (expect_close == 42)
wdt_disable();
else {
pr_crit("Unexpected close, not stopping watchdog!\n");
wdt_ping();
}
expect_close = 0;
clear_bit(0, &wdt_is_open);
return 0;
}
static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
wdt_disable();
return NOTIFY_DONE;
}
static const struct file_operations wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wdt_write,
.unlocked_ioctl = wdt_ioctl,
.open = wdt_open,
.release = wdt_close,
};
static struct miscdevice wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wdt_fops,
};
static struct notifier_block wdt_notifier = {
.notifier_call = wdt_notify_sys,
};
static int w83697hf_check_wdt(void)
{
if (!request_region(wdt_io, 2, WATCHDOG_NAME)) {
pr_err("I/O address 0x%x already in use\n", wdt_io);
return -EIO;
}
pr_debug("Looking for watchdog at address 0x%x\n", wdt_io);
w83697hf_unlock();
if (w83697hf_get_reg(0x20) == 0x60) {
pr_info("watchdog found at address 0x%x\n", wdt_io);
w83697hf_lock();
return 0;
}
w83697hf_lock();
pr_info("watchdog not found at address 0x%x\n", wdt_io);
release_region(wdt_io, 2);
return -EIO;
}
static int w83697hf_ioports[] = { 0x2e, 0x4e, 0x00 };
static int __init wdt_init(void)
{
int ret, i, found = 0;
pr_info("WDT driver for W83697HF/HG initializing\n");
if (wdt_io == 0) {
for (i = 0; ((!found) && (w83697hf_ioports[i] != 0)); i++) {
wdt_io = w83697hf_ioports[i];
if (!w83697hf_check_wdt())
found++;
}
} else {
if (!w83697hf_check_wdt())
found++;
}
if (!found) {
pr_err("No W83697HF/HG could be found\n");
ret = -EIO;
goto out;
}
w83697hf_init();
if (early_disable) {
if (wdt_running())
pr_warn("Stopping previously enabled watchdog until userland kicks in\n");
wdt_disable();
}
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);
pr_info("timeout value must be 1 <= timeout <= 255, using %d\n",
WATCHDOG_TIMEOUT);
}
ret = register_reboot_notifier(&wdt_notifier);
if (ret != 0) {
pr_err("cannot register reboot notifier (err=%d)\n", ret);
goto unreg_regions;
}
ret = misc_register(&wdt_miscdev);
if (ret != 0) {
pr_err("cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
goto unreg_reboot;
}
pr_info("initialized. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
out:
return ret;
unreg_reboot:
unregister_reboot_notifier(&wdt_notifier);
unreg_regions:
release_region(wdt_io, 2);
goto out;
}
static void __exit wdt_exit(void)
{
misc_deregister(&wdt_miscdev);
unregister_reboot_notifier(&wdt_notifier);
release_region(wdt_io, 2);
}
static int __init nvdumper_init(void)
{
int ret, dirty;
#ifdef CONFIG_TEGRA_USE_NCT
union nct_item_type *item;
#endif
if (!nvdumper_reserved) {
pr_info("nvdumper: not configured\n");
return -ENOTSUPP;
}
nvdumper_ptr = ioremap_nocache(nvdumper_reserved,
NVDUMPER_RESERVED_SIZE);
if (!nvdumper_ptr) {
pr_info("nvdumper: failed to ioremap memory at 0x%08lx\n",
nvdumper_reserved);
return -EIO;
}
ret = register_reboot_notifier(&nvdumper_reboot_notifier);
if (ret)
goto err_out1;
ret = nvdumper_regdump_init();
if (ret)
goto err_out2;
nvdumper_dbg_footprint_init();
dirty = get_dirty_state();
switch (dirty) {
case 0:
pr_info("nvdumper: last reboot was clean\n");
break;
case 1:
pr_info("nvdumper: last reboot was dirty\n");
break;
default:
pr_info("nvdumper: last reboot was unknown\n");
break;
}
#ifdef CONFIG_TEGRA_USE_NCT
item = kzalloc(sizeof(*item), GFP_KERNEL);
if (!item) {
pr_err("failed to allocate memory\n");
goto err_out3;
}
ret = tegra_nct_read_item(NCT_ID_RAMDUMP, item);
if (ret < 0) {
pr_err("%s: NCT read failure\n", __func__);
kfree(item);
goto err_out3;
}
pr_info("%s: RAMDUMP flag(%d) from NCT\n",
__func__, item->ramdump.flag);
if (item->ramdump.flag == 1)
set_dirty_state(1);
else
set_dirty_state(0);
kfree(item);
return 0;
err_out3:
#else
set_dirty_state(1);
return 0;
#endif
err_out2:
unregister_reboot_notifier(&nvdumper_reboot_notifier);
err_out1:
iounmap(nvdumper_ptr);
return ret;
}
static int eurwdt_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "WDT Eurotech CPU-1220/1410",
};
int time;
int options, retval = -EINVAL;
switch(cmd) {
default:
return -ENOTTY;
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_KEEPALIVE:
eurwdt_ping();
return 0;
case WDIOC_SETTIMEOUT:
if (copy_from_user(&time, p, sizeof(int)))
return -EFAULT;
/* Sanity check */
if (time < 0 || time > 255)
return -EINVAL;
eurwdt_timeout = time;
eurwdt_set_timeout(time);
/* Fall */
case WDIOC_GETTIMEOUT:
return put_user(eurwdt_timeout, p);
case WDIOC_SETOPTIONS:
if (get_user(options, p))
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
eurwdt_disable_timer();
retval = 0;
}
if (options & WDIOS_ENABLECARD) {
eurwdt_activate_timer();
eurwdt_ping();
retval = 0;
}
return retval;
}
}
/**
* eurwdt_open:
* @inode: inode of device
* @file: file handle to device
*
* The misc device has been opened. The watchdog device is single
* open and on opening we load the counter.
*/
static int eurwdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &eurwdt_is_open))
return -EBUSY;
eurwdt_timeout = WDT_TIMEOUT; /* initial timeout */
/* Activate the WDT */
eurwdt_activate_timer();
return nonseekable_open(inode, file);
}
/**
* eurwdt_release:
* @inode: inode to board
* @file: file handle to board
*
* The watchdog has a configurable API. There is a religious dispute
* between people who want their watchdog to be able to shut down and
* those who want to be sure if the watchdog manager dies the machine
* reboots. In the former case we disable the counters, in the latter
* case you have to open it again very soon.
*/
static int eurwdt_release(struct inode *inode, struct file *file)
{
if (eur_expect_close == 42) {
eurwdt_disable_timer();
} else {
printk(KERN_CRIT "eurwdt: Unexpected close, not stopping watchdog!\n");
eurwdt_ping();
}
clear_bit(0, &eurwdt_is_open);
eur_expect_close = 0;
return 0;
}
/**
* eurwdt_notify_sys:
* @this: our notifier block
* @code: the event being reported
* @unused: unused
*
* Our notifier is called on system shutdowns. We want to turn the card
* off at reboot otherwise the machine will reboot again during memory
* test or worse yet during the following fsck. This would suck, in fact
* trust me - if it happens it does suck.
*/
static int eurwdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT) {
/* Turn the card off */
eurwdt_disable_timer();
}
return NOTIFY_DONE;
}
/*
* Kernel Interfaces
*/
static const struct file_operations eurwdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = eurwdt_write,
.ioctl = eurwdt_ioctl,
.open = eurwdt_open,
.release = eurwdt_release,
};
static struct miscdevice eurwdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &eurwdt_fops,
};
/*
* The WDT card needs to learn about soft shutdowns in order to
* turn the timebomb registers off.
*/
static struct notifier_block eurwdt_notifier = {
.notifier_call = eurwdt_notify_sys,
};
/**
* cleanup_module:
*
* Unload the watchdog. You cannot do this with any file handles open.
* If your watchdog is set to continue ticking on close and you unload
* it, well it keeps ticking. We won't get the interrupt but the board
* will not touch PC memory so all is fine. You just have to load a new
* module in 60 seconds or reboot.
*/
static void __exit eurwdt_exit(void)
{
eurwdt_lock_chip();
misc_deregister(&eurwdt_miscdev);
unregister_reboot_notifier(&eurwdt_notifier);
release_region(io, 2);
free_irq(irq, NULL);
}
/**
* eurwdt_init:
*
* Set up the WDT watchdog board. After grabbing the resources
* we require we need also to unlock the device.
* The open() function will actually kick the board off.
*/
static int __init eurwdt_init(void)
{
int ret;
ret = misc_register(&eurwdt_miscdev);
if (ret) {
printk(KERN_ERR "eurwdt: can't misc_register on minor=%d\n",
WATCHDOG_MINOR);
goto out;
}
ret = request_irq(irq, eurwdt_interrupt, IRQF_DISABLED, "eurwdt", NULL);
if(ret) {
printk(KERN_ERR "eurwdt: IRQ %d is not free.\n", irq);
goto outmisc;
}
if (!request_region(io, 2, "eurwdt")) {
printk(KERN_ERR "eurwdt: IO %X is not free.\n", io);
ret = -EBUSY;
goto outirq;
}
ret = register_reboot_notifier(&eurwdt_notifier);
if (ret) {
printk(KERN_ERR "eurwdt: can't register reboot notifier (err=%d)\n", ret);
goto outreg;
}
eurwdt_unlock_chip();
ret = 0;
printk(KERN_INFO "Eurotech WDT driver 0.01 at %X (Interrupt %d)"
" - timeout event: %s\n",
io, irq, (!strcmp("int", ev) ? "int" : "reboot"));
out:
return ret;
outreg:
release_region(io, 2);
outirq:
free_irq(irq, NULL);
outmisc:
misc_deregister(&eurwdt_miscdev);
goto out;
}
static int gpio_wdt_probe(struct platform_device *pdev)
{
struct gpio_wdt_priv *priv;
enum of_gpio_flags flags;
unsigned int hw_margin;
unsigned long f = 0;
const char *algo;
int ret;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->gpio = of_get_gpio_flags(pdev->dev.of_node, 0, &flags);
if (!gpio_is_valid(priv->gpio))
return priv->gpio;
priv->active_low = flags & OF_GPIO_ACTIVE_LOW;
ret = of_property_read_string(pdev->dev.of_node, "hw_algo", &algo);
if (ret)
return ret;
if (!strncmp(algo, "toggle", 6)) {
priv->hw_algo = HW_ALGO_TOGGLE;
f = GPIOF_IN;
} else if (!strncmp(algo, "level", 5)) {
priv->hw_algo = HW_ALGO_LEVEL;
f = priv->active_low ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
} else {
return -EINVAL;
}
ret = devm_gpio_request_one(&pdev->dev, priv->gpio, f,
dev_name(&pdev->dev));
if (ret)
return ret;
ret = of_property_read_u32(pdev->dev.of_node,
"hw_margin_ms", &hw_margin);
if (ret)
return ret;
/* Disallow values lower than 2 and higher than 65535 ms */
if (hw_margin < 2 || hw_margin > 65535)
return -EINVAL;
/* Use safe value (1/2 of real timeout) */
priv->hw_margin = msecs_to_jiffies(hw_margin / 2);
watchdog_set_drvdata(&priv->wdd, priv);
priv->wdd.info = &gpio_wdt_ident;
priv->wdd.ops = &gpio_wdt_ops;
priv->wdd.min_timeout = SOFT_TIMEOUT_MIN;
priv->wdd.max_timeout = SOFT_TIMEOUT_MAX;
if (watchdog_init_timeout(&priv->wdd, 0, &pdev->dev) < 0)
priv->wdd.timeout = SOFT_TIMEOUT_DEF;
setup_timer(&priv->timer, gpio_wdt_hwping, (unsigned long)&priv->wdd);
ret = watchdog_register_device(&priv->wdd);
if (ret)
return ret;
priv->notifier.notifier_call = gpio_wdt_notify_sys;
ret = register_reboot_notifier(&priv->notifier);
if (ret)
watchdog_unregister_device(&priv->wdd);
return ret;
}
/* Init routine */
int __init bcm_reset_utils_init(void)
{
register_reboot_notifier(&reboot_notifier);
return 0;
}
static long ali_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
WDIOF_SETTIMEOUT |
WDIOF_MAGICCLOSE,
.firmware_version = 0,
.identity = "ALi M1535 WatchDog Timer",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_SETOPTIONS:
{
int new_options, retval = -EINVAL;
if (get_user(new_options, p))
return -EFAULT;
if (new_options & WDIOS_DISABLECARD) {
ali_stop();
retval = 0;
}
if (new_options & WDIOS_ENABLECARD) {
ali_start();
retval = 0;
}
return retval;
}
case WDIOC_KEEPALIVE:
ali_keepalive();
return 0;
case WDIOC_SETTIMEOUT:
{
int new_timeout;
if (get_user(new_timeout, p))
return -EFAULT;
if (ali_settimer(new_timeout))
return -EINVAL;
ali_keepalive();
}
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
return -ENOTTY;
}
}
static int ali_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &ali_is_open))
return -EBUSY;
ali_start();
return nonseekable_open(inode, file);
}
static int ali_release(struct inode *inode, struct file *file)
{
if (ali_expect_release == 42)
ali_stop();
else {
printk(KERN_CRIT PFX
"Unexpected close, not stopping watchdog!\n");
ali_keepalive();
}
clear_bit(0, &ali_is_open);
ali_expect_release = 0;
return 0;
}
static int ali_notify_sys(struct notifier_block *this,
unsigned long code, void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
ali_stop();
return NOTIFY_DONE;
}
static struct pci_device_id ali_pci_tbl[] = {
{ PCI_VENDOR_ID_AL, 0x1533, PCI_ANY_ID, PCI_ANY_ID,},
{ PCI_VENDOR_ID_AL, 0x1535, PCI_ANY_ID, PCI_ANY_ID,},
{ 0, },
};
MODULE_DEVICE_TABLE(pci, ali_pci_tbl);
static int __init ali_find_watchdog(void)
{
struct pci_dev *pdev;
u32 wdog;
pdev = pci_get_device(PCI_VENDOR_ID_AL, 0x1535, NULL);
if (pdev == NULL)
pdev = pci_get_device(PCI_VENDOR_ID_AL, 0x1533, NULL);
if (pdev == NULL)
return -ENODEV;
pci_dev_put(pdev);
pdev = pci_get_device(PCI_VENDOR_ID_AL, 0x7101, NULL);
if (pdev == NULL)
return -ENODEV;
if (pci_enable_device(pdev)) {
pci_dev_put(pdev);
return -EIO;
}
ali_pci = pdev;
pci_read_config_dword(pdev, 0xCC, &wdog);
wdog &= ~0x3F;
wdog &= ~((1 << 27)|(1 << 26)|(1 << 25)|(1 << 24));
wdog &= ~((1 << 16)|(1 << 13)|(1 << 12)|(1 << 11)|(1 << 10)|(1 << 9));
pci_write_config_dword(pdev, 0xCC, wdog);
return 0;
}
static const struct file_operations ali_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = ali_write,
.unlocked_ioctl = ali_ioctl,
.open = ali_open,
.release = ali_release,
};
static struct miscdevice ali_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &ali_fops,
};
static struct notifier_block ali_notifier = {
.notifier_call = ali_notify_sys,
};
static int __init watchdog_init(void)
{
int ret;
if (ali_find_watchdog() != 0)
return -ENODEV;
if (timeout < 1 || timeout >= 18000) {
timeout = WATCHDOG_TIMEOUT;
printk(KERN_INFO PFX
"timeout value must be 0 < timeout < 18000, using %d\n",
timeout);
}
ali_settimer(timeout);
ret = register_reboot_notifier(&ali_notifier);
if (ret != 0) {
printk(KERN_ERR PFX
"cannot register reboot notifier (err=%d)\n", ret);
goto out;
}
ret = misc_register(&ali_miscdev);
if (ret != 0) {
printk(KERN_ERR PFX
"cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
goto unreg_reboot;
}
printk(KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
out:
return ret;
unreg_reboot:
unregister_reboot_notifier(&ali_notifier);
goto out;
}
static void __exit watchdog_exit(void)
{
ali_stop();
misc_deregister(&ali_miscdev);
unregister_reboot_notifier(&ali_notifier);
pci_dev_put(ali_pci);
}
int __init
xpc_init(void)
{
int ret;
short partid;
struct xpc_partition *part;
struct task_struct *kthread;
size_t buf_size;
if (!ia64_platform_is("sn2"))
return -ENODEV;
buf_size = max(XPC_RP_VARS_SIZE,
XPC_RP_HEADER_SIZE + XP_NASID_MASK_BYTES);
xpc_remote_copy_buffer = xpc_kmalloc_cacheline_aligned(buf_size,
GFP_KERNEL,
&xpc_remote_copy_buffer_base);
if (xpc_remote_copy_buffer == NULL)
return -ENOMEM;
snprintf(xpc_part->bus_id, BUS_ID_SIZE, "part");
snprintf(xpc_chan->bus_id, BUS_ID_SIZE, "chan");
xpc_sysctl = register_sysctl_table(xpc_sys_dir);
/*
* The first few fields of each entry of xpc_partitions[] need to
* be initialized now so that calls to xpc_connect() and
* xpc_disconnect() can be made prior to the activation of any remote
* partition. NOTE THAT NONE OF THE OTHER FIELDS BELONGING TO THESE
* ENTRIES ARE MEANINGFUL UNTIL AFTER AN ENTRY'S CORRESPONDING
* PARTITION HAS BEEN ACTIVATED.
*/
for (partid = 1; partid < XP_MAX_PARTITIONS; partid++) {
part = &xpc_partitions[partid];
DBUG_ON((u64)part != L1_CACHE_ALIGN((u64)part));
part->act_IRQ_rcvd = 0;
spin_lock_init(&part->act_lock);
part->act_state = XPC_P_INACTIVE;
XPC_SET_REASON(part, 0, 0);
init_timer(&part->disengage_request_timer);
part->disengage_request_timer.function =
xpc_timeout_partition_disengage_request;
part->disengage_request_timer.data = (unsigned long)part;
part->setup_state = XPC_P_UNSET;
init_waitqueue_head(&part->teardown_wq);
atomic_set(&part->references, 0);
}
/*
* Open up protections for IPI operations (and AMO operations on
* Shub 1.1 systems).
*/
xpc_allow_IPI_ops();
/*
* Interrupts being processed will increment this atomic variable and
* awaken the heartbeat thread which will process the interrupts.
*/
atomic_set(&xpc_act_IRQ_rcvd, 0);
/*
* This is safe to do before the xpc_hb_checker thread has started
* because the handler releases a wait queue. If an interrupt is
* received before the thread is waiting, it will not go to sleep,
* but rather immediately process the interrupt.
*/
ret = request_irq(SGI_XPC_ACTIVATE, xpc_act_IRQ_handler, 0,
"xpc hb", NULL);
if (ret != 0) {
dev_err(xpc_part, "can't register ACTIVATE IRQ handler, "
"errno=%d\n", -ret);
xpc_restrict_IPI_ops();
if (xpc_sysctl)
unregister_sysctl_table(xpc_sysctl);
kfree(xpc_remote_copy_buffer_base);
return -EBUSY;
}
/*
* Fill the partition reserved page with the information needed by
* other partitions to discover we are alive and establish initial
* communications.
*/
xpc_rsvd_page = xpc_rsvd_page_init();
if (xpc_rsvd_page == NULL) {
dev_err(xpc_part, "could not setup our reserved page\n");
free_irq(SGI_XPC_ACTIVATE, NULL);
xpc_restrict_IPI_ops();
if (xpc_sysctl)
unregister_sysctl_table(xpc_sysctl);
kfree(xpc_remote_copy_buffer_base);
return -EBUSY;
}
/* add ourselves to the reboot_notifier_list */
ret = register_reboot_notifier(&xpc_reboot_notifier);
if (ret != 0)
dev_warn(xpc_part, "can't register reboot notifier\n");
/* add ourselves to the die_notifier list */
ret = register_die_notifier(&xpc_die_notifier);
if (ret != 0)
dev_warn(xpc_part, "can't register die notifier\n");
init_timer(&xpc_hb_timer);
xpc_hb_timer.function = xpc_hb_beater;
/*
* The real work-horse behind xpc. This processes incoming
* interrupts and monitors remote heartbeats.
*/
kthread = kthread_run(xpc_hb_checker, NULL, XPC_HB_CHECK_THREAD_NAME);
if (IS_ERR(kthread)) {
dev_err(xpc_part, "failed while forking hb check thread\n");
/* indicate to others that our reserved page is uninitialized */
xpc_rsvd_page->vars_pa = 0;
/* take ourselves off of the reboot_notifier_list */
(void)unregister_reboot_notifier(&xpc_reboot_notifier);
/* take ourselves off of the die_notifier list */
(void)unregister_die_notifier(&xpc_die_notifier);
del_timer_sync(&xpc_hb_timer);
free_irq(SGI_XPC_ACTIVATE, NULL);
xpc_restrict_IPI_ops();
if (xpc_sysctl)
unregister_sysctl_table(xpc_sysctl);
kfree(xpc_remote_copy_buffer_base);
return -EBUSY;
}
/*
* Startup a thread that will attempt to discover other partitions to
* activate based on info provided by SAL. This new thread is short
* lived and will exit once discovery is complete.
*/
kthread = kthread_run(xpc_initiate_discovery, NULL,
XPC_DISCOVERY_THREAD_NAME);
if (IS_ERR(kthread)) {
dev_err(xpc_part, "failed while forking discovery thread\n");
/* mark this new thread as a non-starter */
complete(&xpc_discovery_exited);
xpc_do_exit(xpUnloading);
return -EBUSY;
}
/* set the interface to point at XPC's functions */
xpc_set_interface(xpc_initiate_connect, xpc_initiate_disconnect,
xpc_initiate_allocate, xpc_initiate_send,
xpc_initiate_send_notify, xpc_initiate_received,
xpc_initiate_partid_to_nasids);
return 0;
}
static int pn544_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int ret = -ENODEV;
struct pn544_i2c_platform_data *platform_data;
struct pn544_dev *pn544_dev;
pr_debug("%s : Probing pn544 driver\n", __func__);
if (client->dev.of_node)
platform_data = pn544_of_init(client);
else
platform_data = client->dev.platform_data;
if (!platform_data) {
pr_err("%s : GPIO has value 0, nfc probe fail.\n", __func__);
goto err_exit;
}
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
pr_err("%s : i2c_check_functionality I2C_FUNC_I2C failed.\n",
__func__);
goto err_exit;
}
pn544_dev = kzalloc(sizeof(*pn544_dev), GFP_KERNEL);
if (pn544_dev == NULL) {
dev_err(&client->dev,
"failed to allocate memory for module data\n");
ret = -ENOMEM;
goto err_exit;
}
ret = pn544_gpio_init(platform_data);
if (ret) {
dev_err(&client->dev, "gpio init failed\n");
goto err_gpio_init;
}
pn544_dev->irq_gpio = platform_data->irq_gpio;
pn544_dev->ven_gpio = platform_data->ven_gpio;
pn544_dev->firmware_gpio = platform_data->firmware_gpio;
pn544_dev->ven_polarity = platform_data->ven_polarity;
pn544_dev->discharge_delay = platform_data->discharge_delay;
pn544_dev->client = client;
wake_lock_init(&pn544_dev->wakelock, WAKE_LOCK_SUSPEND, "pn544c3");
/* init mutex and queues */
init_waitqueue_head(&pn544_dev->read_wq);
mutex_init(&pn544_dev->read_mutex);
mutex_init(&pn544_dev->ioctl_mutex);
spin_lock_init(&pn544_dev->irq_enabled_lock);
pn544_dev->pn544_device.minor = MISC_DYNAMIC_MINOR;
pn544_dev->pn544_device.name = "pn544";
pn544_dev->pn544_device.fops = &pn544_dev_fops;
ret = misc_register(&pn544_dev->pn544_device);
if (ret) {
pr_err("%s : misc_register failed.\n", __FILE__);
goto err_misc_register;
}
pr_debug("%s : PN544 Misc Minor: %d\n",
__func__, pn544_dev->pn544_device.minor);
/* Get the device structure */
pn544_dev->pn544_control_device = pn544_dev->pn544_device.this_device;
/* Create sysfs device for PN544 control functionality */
ret = device_create_file(pn544_dev->pn544_control_device,
&dev_attr_pn544_control_dev);
if (ret) {
pr_err("%s : device_create_file failed\n", __FILE__);
goto err_device_create_file_failed;
}
/* request irq. the irq is set whenever the chip has data available
* for reading. it is cleared when all data has been read.
*/
pr_debug("%s : requesting IRQ %d\n", __func__, client->irq);
pn544_dev->irq_enabled = true;
ret = request_irq(client->irq, pn544_dev_irq_handler,
IRQF_TRIGGER_HIGH, client->name, pn544_dev);
if (ret) {
dev_err(&client->dev, "request_irq failed\n");
goto err_request_irq_failed;
}
if (unlikely(irq_set_irq_wake(client->irq, 1)))
pr_err("%s : unable to make irq %d wakeup\n", __func__,
client->irq);
pn544_disable_irq(pn544_dev);
pn544_dev->reboot_notify.notifier_call = nfc_blk_reboot_notify;
register_reboot_notifier(&pn544_dev->reboot_notify);
i2c_set_clientdata(client, pn544_dev);
return 0;
err_request_irq_failed:
device_remove_file(pn544_dev->pn544_control_device,
&dev_attr_pn544_control_dev);
err_device_create_file_failed:
misc_deregister(&pn544_dev->pn544_device);
err_misc_register:
mutex_destroy(&pn544_dev->ioctl_mutex);
mutex_destroy(&pn544_dev->read_mutex);
pn544_gpio_free(pn544_dev);
wake_unlock(&pn544_dev->wakelock);
wake_lock_destroy(&pn544_dev->wakelock);
err_gpio_init:
kfree(pn544_dev);
err_exit:
return ret;
}
static long indydog_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
int options, retval = -EINVAL;
static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
.firmware_version = 0,
.identity = "Hardware Watchdog for SGI IP22",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
if (copy_to_user((struct watchdog_info *)arg,
&ident, sizeof(ident)))
return -EFAULT;
return 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, (int *)arg);
case WDIOC_SETOPTIONS:
{
if (get_user(options, (int *)arg))
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
indydog_stop();
retval = 0;
}
if (options & WDIOS_ENABLECARD) {
indydog_start();
retval = 0;
}
return retval;
}
case WDIOC_KEEPALIVE:
indydog_ping();
return 0;
case WDIOC_GETTIMEOUT:
return put_user(WATCHDOG_TIMEOUT, (int *)arg);
default:
return -ENOTTY;
}
}
static int indydog_notify_sys(struct notifier_block *this,
unsigned long code, void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
indydog_stop(); /* Turn the WDT off */
return NOTIFY_DONE;
}
static const struct file_operations indydog_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = indydog_write,
.unlocked_ioctl = indydog_ioctl,
.open = indydog_open,
.release = indydog_release,
};
static struct miscdevice indydog_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &indydog_fops,
};
static struct notifier_block indydog_notifier = {
.notifier_call = indydog_notify_sys,
};
static char banner[] __initdata =
KERN_INFO PFX "Hardware Watchdog Timer for SGI IP22: 0.3\n";
static int __init watchdog_init(void)
{
int ret;
spin_lock_init(&indydog_lock);
ret = register_reboot_notifier(&indydog_notifier);
if (ret) {
printk(KERN_ERR PFX
"cannot register reboot notifier (err=%d)\n", ret);
return ret;
}
ret = misc_register(&indydog_miscdev);
if (ret) {
printk(KERN_ERR PFX
"cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
unregister_reboot_notifier(&indydog_notifier);
return ret;
}
printk(banner);
return 0;
}
static void __exit watchdog_exit(void)
{
misc_deregister(&indydog_miscdev);
unregister_reboot_notifier(&indydog_notifier);
}
static int
hif_usb_probe(struct usb_interface *interface, const struct usb_device_id *id)
{
int ret = 0;
struct hif_usb_softc *sc;
struct ol_softc *ol_sc;
struct usb_device *pdev = interface_to_usbdev(interface);
int vendor_id, product_id;
pr_info("hif_usb_probe\n");
usb_get_dev(pdev);
vendor_id = le16_to_cpu(pdev->descriptor.idVendor);
product_id = le16_to_cpu(pdev->descriptor.idProduct);
ret = 0;
sc = A_MALLOC(sizeof(*sc));
if (!sc) {
ret = -ENOMEM;
goto err_alloc;
}
OS_MEMZERO(sc, sizeof(*sc));
sc->pdev = (void *)pdev;
sc->dev = &pdev->dev;
sc->aps_osdev.bdev = pdev;
sc->aps_osdev.device = &pdev->dev;
sc->aps_osdev.bc.bc_bustype = HAL_BUS_TYPE_AHB;
sc->devid = id->idProduct;
adf_os_spinlock_init(&sc->target_lock);
ol_sc = A_MALLOC(sizeof(*ol_sc));
if (!ol_sc)
goto err_attach;
OS_MEMZERO(ol_sc, sizeof(*ol_sc));
ol_sc->sc_osdev = &sc->aps_osdev;
ol_sc->hif_sc = (void *)sc;
sc->ol_sc = ol_sc;
if ((usb_control_msg(pdev, usb_sndctrlpipe(pdev, 0),
USB_REQ_SET_CONFIGURATION, 0, 1, 0, NULL, 0,
HZ)) < 0) {
pr_info("%s[%d]\n\r", __func__, __LINE__);
}
usb_set_interface(pdev, 0, 0);
if (hif_usb_configure(sc, &ol_sc->hif_hdl, interface))
goto err_config;
ol_sc->enableuartprint = 1;
ol_sc->enablefwlog = 0;
ol_sc->enablesinglebinary = FALSE;
ol_sc->max_no_of_peers = 1;
init_waitqueue_head(&ol_sc->sc_osdev->event_queue);
ret = hdd_wlan_startup(&pdev->dev, ol_sc);
if (ret) {
hif_nointrs(sc);
if (sc->hif_device != NULL) {
((HIF_DEVICE_USB *)(sc->hif_device))->sc = NULL;
}
athdiag_procfs_remove();
goto err_config;
}
sc->hdd_removed = 0;
sc->hdd_removed_processing = 0;
sc->hdd_removed_wait_cnt = 0;
#ifndef REMOVE_PKT_LOG
if (vos_get_conparam() != VOS_FTM_MODE &&
!WLAN_IS_EPPING_ENABLED(vos_get_conparam())) {
/*
* pktlog initialization
*/
ol_pl_sethandle(&ol_sc->pdev_txrx_handle->pl_dev, ol_sc);
if (pktlogmod_init(ol_sc))
pr_err("%s: pktlogmod_init failed\n", __func__);
}
#endif
#ifdef WLAN_BTAMP_FEATURE
/* Send WLAN UP indication to Nlink Service */
send_btc_nlink_msg(WLAN_MODULE_UP_IND, 0);
#endif
sc->interface = interface;
sc->reboot_notifier.notifier_call = hif_usb_reboot;
register_reboot_notifier(&sc->reboot_notifier);
usb_sc = sc;
return 0;
err_config:
A_FREE(ol_sc);
err_attach:
ret = -EIO;
usb_sc = NULL;
A_FREE(sc);
err_alloc:
usb_put_dev(pdev);
return ret;
}
static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "SC520",
};
switch(cmd)
{
default:
return -ENOIOCTLCMD;
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_KEEPALIVE:
wdt_keepalive();
return 0;
case WDIOC_SETOPTIONS:
{
int new_options, retval = -EINVAL;
if(get_user(new_options, p))
return -EFAULT;
if(new_options & WDIOS_DISABLECARD) {
wdt_turnoff();
retval = 0;
}
if(new_options & WDIOS_ENABLECARD) {
wdt_startup();
retval = 0;
}
return retval;
}
case WDIOC_SETTIMEOUT:
{
int new_timeout;
if(get_user(new_timeout, p))
return -EFAULT;
if(wdt_set_heartbeat(new_timeout))
return -EINVAL;
wdt_keepalive();
/* Fall through */
}
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
}
}
static const struct file_operations wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = fop_write,
.open = fop_open,
.release = fop_close,
.ioctl = fop_ioctl,
};
static struct miscdevice wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wdt_fops,
};
/*
* Notifier for system down
*/
static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if(code==SYS_DOWN || code==SYS_HALT)
wdt_turnoff();
return NOTIFY_DONE;
}
/*
* The WDT needs to learn about soft shutdowns in order to
* turn the timebomb registers off.
*/
static struct notifier_block wdt_notifier = {
.notifier_call = wdt_notify_sys,
};
static void __exit sc520_wdt_unload(void)
{
if (!nowayout)
wdt_turnoff();
/* Deregister */
misc_deregister(&wdt_miscdev);
unregister_reboot_notifier(&wdt_notifier);
iounmap(wdtmrctl);
}
static int __init sc520_wdt_init(void)
{
int rc = -EBUSY;
spin_lock_init(&wdt_spinlock);
init_timer(&timer);
timer.function = wdt_timer_ping;
timer.data = 0;
/* Check that the timeout value is within it's range ; if not reset to the default */
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);
printk(KERN_INFO PFX "timeout value must be 1<=timeout<=3600, using %d\n",
WATCHDOG_TIMEOUT);
}
wdtmrctl = ioremap((unsigned long)(MMCR_BASE + OFFS_WDTMRCTL), 2);
if (!wdtmrctl) {
printk(KERN_ERR PFX "Unable to remap memory\n");
rc = -ENOMEM;
goto err_out_region2;
}
rc = register_reboot_notifier(&wdt_notifier);
if (rc) {
printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
rc);
goto err_out_ioremap;
}
rc = misc_register(&wdt_miscdev);
if (rc) {
printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, rc);
goto err_out_notifier;
}
printk(KERN_INFO PFX "WDT driver for SC520 initialised. timeout=%d sec (nowayout=%d)\n",
timeout,nowayout);
return 0;
err_out_notifier:
unregister_reboot_notifier(&wdt_notifier);
err_out_ioremap:
iounmap(wdtmrctl);
err_out_region2:
return rc;
}
module_init(sc520_wdt_init);
module_exit(sc520_wdt_unload);
MODULE_AUTHOR("Scott and Bill Jennings");
MODULE_DESCRIPTION("Driver for watchdog timer in AMD \"Elan\" SC520 uProcessor");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
static long wdog_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_heartbeat;
int status;
int options;
uint32_t remaining;
struct watchdog_info ident = {
.options = WDIOF_SETTIMEOUT|
WDIOF_MAGICCLOSE|
WDIOF_KEEPALIVEPING,
.firmware_version = 1,
.identity = "BCM2708",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
status = wdog_get_status();
return put_user(status, p);
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_KEEPALIVE:
wdog_ping();
return 0;
case WDIOC_SETTIMEOUT:
if (get_user(new_heartbeat, p))
return -EFAULT;
if (wdog_set_heartbeat(new_heartbeat))
return -EINVAL;
wdog_ping();
/* Fall */
case WDIOC_GETTIMEOUT:
return put_user(heartbeat, p);
case WDIOC_GETTIMELEFT:
remaining = WDOG_TICKS_TO_SECS(wdog_get_remaining());
return put_user(remaining, p);
case WDIOC_SETOPTIONS:
if (get_user(options, p))
return -EFAULT;
if (options & WDIOS_DISABLECARD)
wdog_stop();
if (options & WDIOS_ENABLECARD)
wdog_start(wdog_ticks);
return 0;
default:
return -ENOTTY;
}
}
/**
* @inode: inode of device
* @file: file handle to device
*
* The watchdog device has been opened. The watchdog device is single
* open and on opening we load the counters.
*/
static int wdog_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &wdog_is_open))
return -EBUSY;
/*
* Activate
*/
wdog_start(wdog_ticks);
return nonseekable_open(inode, file);
}
/**
* @inode: inode to board
* @file: file handle to board
*
* The watchdog has a configurable API. There is a religious dispute
* between people who want their watchdog to be able to shut down and
* those who want to be sure if the watchdog manager dies the machine
* reboots. In the former case we disable the counters, in the latter
* case you have to open it again very soon.
*/
static int wdog_release(struct inode *inode, struct file *file)
{
if (expect_close == 42) {
wdog_stop();
} else {
printk(KERN_CRIT
"wdt: WDT device closed unexpectedly. WDT will not stop!\n");
wdog_ping();
}
clear_bit(0, &wdog_is_open);
expect_close = 0;
return 0;
}
/**
* @this: our notifier block
* @code: the event being reported
* @unused: unused
*
* Our notifier is called on system shutdowns. Turn the watchdog
* off so that it does not fire during the next reboot.
*/
static int wdog_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
wdog_stop();
return NOTIFY_DONE;
}
/*
* Kernel Interfaces
*/
static const struct file_operations wdog_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wdog_write,
.unlocked_ioctl = wdog_ioctl,
.open = wdog_open,
.release = wdog_release,
};
static struct miscdevice wdog_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wdog_fops,
};
/*
* The WDT card needs to learn about soft shutdowns in order to
* turn the timebomb registers off.
*/
static struct notifier_block wdog_notifier = {
.notifier_call = wdog_notify_sys,
};
/**
* cleanup_module:
*
* Unload the watchdog. You cannot do this with any file handles open.
* If your watchdog is set to continue ticking on close and you unload
* it, well it keeps ticking. We won't get the interrupt but the board
* will not touch PC memory so all is fine. You just have to load a new
* module in 60 seconds or reboot.
*/
static void __exit wdog_exit(void)
{
misc_deregister(&wdog_miscdev);
unregister_reboot_notifier(&wdog_notifier);
}
static int __init wdog_init(void)
{
int ret;
/* Check that the heartbeat value is within it's range;
if not reset to the default */
if (wdog_set_heartbeat(heartbeat)) {
wdog_set_heartbeat(WD_TIMO);
printk(KERN_INFO "bcm2708_wdog: heartbeat value must be "
"0 < heartbeat < %d, using %d\n",
WDOG_TICKS_TO_SECS(PM_WDOG_TIME_SET),
WD_TIMO);
}
ret = register_reboot_notifier(&wdog_notifier);
if (ret) {
printk(KERN_ERR
"wdt: cannot register reboot notifier (err=%d)\n", ret);
goto out_reboot;
}
ret = misc_register(&wdog_miscdev);
if (ret) {
printk(KERN_ERR
"wdt: cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
goto out_misc;
}
printk(KERN_INFO "bcm2708 watchdog, heartbeat=%d sec (nowayout=%d)\n",
heartbeat, nowayout);
return 0;
out_misc:
unregister_reboot_notifier(&wdog_notifier);
out_reboot:
return ret;
}
static long intel_scu_ioctl(struct file *file,
unsigned int cmd,
unsigned long arg)
{
void __user *argp = (void __user *)arg;
u32 __user *p = argp;
u32 new_margin;
static const struct watchdog_info ident = {
.options = WDIOF_SETTIMEOUT
| WDIOF_KEEPALIVEPING,
.firmware_version = 0, /* @todo Get from SCU via
ipc_get_scu_fw_version()? */
.identity = "Intel_SCU IOH Watchdog" /* len < 32 */
};
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(argp,
&ident,
sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_KEEPALIVE:
intel_scu_keepalive();
return 0;
case WDIOC_SETTIMEOUT:
if (get_user(new_margin, p))
return -EFAULT;
if (check_timer_margin(new_margin))
return -EINVAL;
if (intel_scu_set_heartbeat(new_margin))
return -EINVAL;
return 0;
case WDIOC_GETTIMEOUT:
return put_user(watchdog_device.soft_threshold, p);
default:
return -ENOTTY;
}
}
/*
* Notifier for system down
*/
static int intel_scu_notify_sys(struct notifier_block *this,
unsigned long code,
void *another_unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
/* Turn off the watchdog timer. */
intel_scu_stop();
return NOTIFY_DONE;
}
/*
* Kernel Interfaces
*/
static const struct file_operations intel_scu_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = intel_scu_write,
.unlocked_ioctl = intel_scu_ioctl,
.open = intel_scu_open,
.release = intel_scu_release,
};
static int __init intel_scu_watchdog_init(void)
{
int ret;
u32 __iomem *tmp_addr;
/*
* We don't really need to check this as the SFI timer get will fail
* but if we do so we can exit with a clearer reason and no noise.
*
* If it isn't an intel MID device then it doesn't have this watchdog
*/
if (!mrst_identify_cpu())
return -ENODEV;
/* Check boot parameters to verify that their initial values */
/* are in range. */
/* Check value of timer_set boot parameter */
if ((timer_set < MIN_TIME_CYCLE) ||
(timer_set > MAX_TIME - MIN_TIME_CYCLE)) {
pr_err("Watchdog timer: value of timer_set %x (hex) "
"is out of range from %x to %x (hex)\n",
timer_set, MIN_TIME_CYCLE, MAX_TIME - MIN_TIME_CYCLE);
return -EINVAL;
}
/* Check value of timer_margin boot parameter */
if (check_timer_margin(timer_margin))
return -EINVAL;
watchdog_device.timer_tbl_ptr = sfi_get_mtmr(sfi_mtimer_num-1);
if (watchdog_device.timer_tbl_ptr == NULL) {
pr_debug("Watchdog timer - Intel SCU watchdog: timer is not available\n");
return -ENODEV;
}
/* make sure the timer exists */
if (watchdog_device.timer_tbl_ptr->phys_addr == 0) {
pr_debug("Watchdog timer - Intel SCU watchdog - timer %d does not have valid physical memory\n",
sfi_mtimer_num);
return -ENODEV;
}
if (watchdog_device.timer_tbl_ptr->irq == 0) {
pr_debug("Watchdog timer: timer %d invalid irq\n",
sfi_mtimer_num);
return -ENODEV;
}
tmp_addr = ioremap_nocache(watchdog_device.timer_tbl_ptr->phys_addr,
20);
if (tmp_addr == NULL) {
pr_debug("Watchdog timer: timer unable to ioremap\n");
return -ENOMEM;
}
watchdog_device.timer_load_count_addr = tmp_addr++;
watchdog_device.timer_current_value_addr = tmp_addr++;
watchdog_device.timer_control_addr = tmp_addr++;
watchdog_device.timer_clear_interrupt_addr = tmp_addr++;
watchdog_device.timer_interrupt_status_addr = tmp_addr++;
/* Set the default time values in device structure */
watchdog_device.timer_set = timer_set;
watchdog_device.threshold =
timer_margin * watchdog_device.timer_tbl_ptr->freq_hz;
watchdog_device.soft_threshold =
(watchdog_device.timer_set - timer_margin)
* watchdog_device.timer_tbl_ptr->freq_hz;
watchdog_device.intel_scu_notifier.notifier_call =
intel_scu_notify_sys;
ret = register_reboot_notifier(&watchdog_device.intel_scu_notifier);
if (ret) {
pr_err("Watchdog timer: cannot register notifier %d)\n", ret);
goto register_reboot_error;
}
watchdog_device.miscdev.minor = WATCHDOG_MINOR;
watchdog_device.miscdev.name = "watchdog";
watchdog_device.miscdev.fops = &intel_scu_fops;
ret = misc_register(&watchdog_device.miscdev);
if (ret) {
pr_err("Watchdog timer: cannot register miscdev %d err =%d\n",
WATCHDOG_MINOR, ret);
goto misc_register_error;
}
ret = request_irq((unsigned int)watchdog_device.timer_tbl_ptr->irq,
watchdog_timer_interrupt,
IRQF_SHARED, "watchdog",
&watchdog_device.timer_load_count_addr);
if (ret) {
pr_err("Watchdog timer: error requesting irq %d\n", ret);
goto request_irq_error;
}
/* Make sure timer is disabled before returning */
intel_scu_stop();
return 0;
/* error cleanup */
request_irq_error:
misc_deregister(&watchdog_device.miscdev);
misc_register_error:
unregister_reboot_notifier(&watchdog_device.intel_scu_notifier);
register_reboot_error:
intel_scu_stop();
iounmap(watchdog_device.timer_load_count_addr);
return ret;
}
/** * @Copyright (C) Anyka 2012 * @brief probe battery * @author Gao wangsheng * @email [email protected] * @date 2012-11-2 * @param[out] void * @param[in] *dev * @return fail or not */ static int __devinit ak_battery_probe(struct platform_device *dev) { int ret = 0; struct ak_bat_mach_info *info; info = (struct ak_bat_mach_info *)dev->dev.platform_data; if (!info) { printk(KERN_ERR "%s:no platform data for battery\n",__func__); ret = -EINVAL; goto nodata_out; } /* initialize hardware */ mutex_init(&bat_device.bat_lock); bat_device.rd_voltage.sample = info->bat_mach_info.voltage_sample; bat_device.rd_voltage.design_max = info->bat_mach_info.max_voltage; init_timer(&bat_device.timer); bat_device.timer.function = bat_charge_full_timer; bat_device.timer.data = (unsigned long) &bat_device; INIT_DELAYED_WORK(&charge_work,bat_charge_work); INIT_DELAYED_WORK(&discharge_work,bat_discharge_work); INIT_DELAYED_WORK(&voltage_work,bat_voltage_work); INIT_DELAYED_WORK(&usbirq_work,bat_usbirq_work); INIT_DELAYED_WORK(&pdown_work,bat_pdown_work); INIT_DELAYED_WORK(&resume_work,bat_resume_work); ret = power_supply_register(&dev->dev, &bat_device.bat_ps); if (ret != 0) { goto cancel_out; } ret = power_supply_register(&dev->dev,&bat_device.usb_ps); if (ret != 0) { goto free_bat_ps_out; } ret = power_supply_register(&dev->dev,&bat_device.ac_ps); if (ret != 0) { goto free_usb_ps_out; } // use for charge full state if (info->full_gpio.pindata.pin >= 0) { info->gpio_init(&info->full_gpio.pindata); } if (info->ac_gpio.is_detect_mode == BAT_CHARGE_GPIO_DETECT) { INIT_DELAYED_WORK(&acirq_work,bat_acirq_work); // use for ac charge in irq if (info->ac_gpio.irq >= 0) { info->gpio_init(&info->ac_gpio.pindata); bat_set_int_inverse(info->ac_gpio.pindata.pin); if (request_irq(info->ac_gpio.irq,akbat_ac_irqhandler,0,"ac_charge",&bat_device)) { printk(KERN_ERR "%s:Could not allocate IRQ %d\n", __func__,info->ac_gpio.irq); ret = -EIO; goto free_ac_ps_out; } } } else if (info->ac_gpio.is_detect_mode == BAT_CHARGE_ADC_DETECT) { memset(&ac_detect_nb, 0, sizeof(ac_detect_nb)); ac_detect_nb.notifier_call = ac_detect_plugin; addetect_register_client(&ac_detect_nb); } // use for usb charge in irq if (info->usb_gpio.irq >= 0) { info->gpio_init(&info->usb_gpio.pindata); mdelay(100); bat_set_int_inverse(info->usb_gpio.pindata.pin); if (request_irq(info->usb_gpio.irq,akbat_usb_irqhandler,0,"usb_charge",&bat_device)) { printk(KERN_ERR "%s:Could not allocate IRQ %d\n", __func__,info->usb_gpio.irq); ret = -EIO; goto free_acirq_out; } } ak_bat_update(&bat_device); schedule_delayed_work(&voltage_work,UPDATE_VOLTAGE_DELAY); register_reboot_notifier(&battery_reboot_nb); bat_print_battery_info(&bat_device); printk("AK Battery initialized\n"); return ret; free_acirq_out: if (info->ac_gpio.irq > 0) { disable_irq(info->ac_gpio.irq); free_irq(info->ac_gpio.irq, dev); } free_ac_ps_out: power_supply_unregister(&bat_device.ac_ps); free_usb_ps_out: power_supply_unregister(&bat_device.usb_ps); free_bat_ps_out: power_supply_unregister(&bat_device.bat_ps); cancel_out: del_timer_sync(&bat_device.timer); cancel_delayed_work_sync(&charge_work); cancel_delayed_work_sync(&discharge_work); cancel_delayed_work_sync(&voltage_work); cancel_delayed_work_sync(&usbirq_work); cancel_delayed_work_sync(&acirq_work); cancel_delayed_work_sync(&pdown_work); cancel_delayed_work_sync(&resume_work); nodata_out: printk(KERN_ERR "###########%s:ERR out##########\n",__func__); return ret; }
int __init
xpc_init(void)
{
int ret;
struct task_struct *kthread;
dev_set_name(xpc_part, "part");
dev_set_name(xpc_chan, "chan");
if (is_shub()) {
/*
* The ia64-sn2 architecture supports at most 64 partitions.
* And the inability to unregister remote amos restricts us
* further to only support exactly 64 partitions on this
* architecture, no less.
*/
if (xp_max_npartitions != 64) {
dev_err(xpc_part, "max #of partitions not set to 64\n");
ret = -EINVAL;
} else {
ret = xpc_init_sn2();
}
} else if (is_uv()) {
ret = xpc_init_uv();
} else {
ret = -ENODEV;
}
if (ret != 0)
return ret;
ret = xpc_setup_partitions();
if (ret != 0) {
dev_err(xpc_part, "can't get memory for partition structure\n");
goto out_1;
}
xpc_sysctl = register_sysctl_table(xpc_sys_dir);
/*
* Fill the partition reserved page with the information needed by
* other partitions to discover we are alive and establish initial
* communications.
*/
ret = xpc_setup_rsvd_page();
if (ret != 0) {
dev_err(xpc_part, "can't setup our reserved page\n");
goto out_2;
}
/* add ourselves to the reboot_notifier_list */
ret = register_reboot_notifier(&xpc_reboot_notifier);
if (ret != 0)
dev_warn(xpc_part, "can't register reboot notifier\n");
/* add ourselves to the die_notifier list */
ret = register_die_notifier(&xpc_die_notifier);
if (ret != 0)
dev_warn(xpc_part, "can't register die notifier\n");
/*
* The real work-horse behind xpc. This processes incoming
* interrupts and monitors remote heartbeats.
*/
kthread = kthread_run(xpc_hb_checker, NULL, XPC_HB_CHECK_THREAD_NAME);
if (IS_ERR(kthread)) {
dev_err(xpc_part, "failed while forking hb check thread\n");
ret = -EBUSY;
goto out_3;
}
/*
* Startup a thread that will attempt to discover other partitions to
* activate based on info provided by SAL. This new thread is short
* lived and will exit once discovery is complete.
*/
kthread = kthread_run(xpc_initiate_discovery, NULL,
XPC_DISCOVERY_THREAD_NAME);
if (IS_ERR(kthread)) {
dev_err(xpc_part, "failed while forking discovery thread\n");
/* mark this new thread as a non-starter */
complete(&xpc_discovery_exited);
xpc_do_exit(xpUnloading);
return -EBUSY;
}
/* set the interface to point at XPC's functions */
xpc_set_interface(xpc_initiate_connect, xpc_initiate_disconnect,
xpc_initiate_send, xpc_initiate_send_notify,
xpc_initiate_received, xpc_initiate_partid_to_nasids);
return 0;
/* initialization was not successful */
out_3:
xpc_teardown_rsvd_page();
(void)unregister_die_notifier(&xpc_die_notifier);
(void)unregister_reboot_notifier(&xpc_reboot_notifier);
out_2:
if (xpc_sysctl)
unregister_sysctl_table(xpc_sysctl);
xpc_teardown_partitions();
out_1:
if (is_shub())
xpc_exit_sn2();
else if (is_uv())
xpc_exit_uv();
return ret;
}
static long wafwdt_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
int new_timeout;
void __user *argp = (void __user *)arg;
int __user *p = argp;
static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT |
WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "Wafer 5823 WDT",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
if (copy_to_user(argp, &ident, sizeof(ident)))
return -EFAULT;
break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_SETOPTIONS:
{
int options, retval = -EINVAL;
if (get_user(options, p))
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
wafwdt_start();
retval = 0;
}
if (options & WDIOS_ENABLECARD) {
wafwdt_stop();
retval = 0;
}
return retval;
}
case WDIOC_KEEPALIVE:
wafwdt_ping();
break;
case WDIOC_SETTIMEOUT:
if (get_user(new_timeout, p))
return -EFAULT;
if ((new_timeout < 1) || (new_timeout > 255))
return -EINVAL;
timeout = new_timeout;
wafwdt_stop();
wafwdt_start();
/* Fall */
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
return -ENOTTY;
}
return 0;
}
static int wafwdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &wafwdt_is_open))
return -EBUSY;
/*
* Activate
*/
wafwdt_start();
return nonseekable_open(inode, file);
}
static int wafwdt_close(struct inode *inode, struct file *file)
{
if (expect_close == 42)
wafwdt_stop();
else {
// printk(KERN_CRIT PFX
;
wafwdt_ping();
}
clear_bit(0, &wafwdt_is_open);
expect_close = 0;
return 0;
}
/*
* Notifier for system down
*/
static int wafwdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
wafwdt_stop();
return NOTIFY_DONE;
}
/*
* Kernel Interfaces
*/
static const struct file_operations wafwdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wafwdt_write,
.unlocked_ioctl = wafwdt_ioctl,
.open = wafwdt_open,
.release = wafwdt_close,
};
static struct miscdevice wafwdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wafwdt_fops,
};
/*
* The WDT needs to learn about soft shutdowns in order to
* turn the timebomb registers off.
*/
static struct notifier_block wafwdt_notifier = {
.notifier_call = wafwdt_notify_sys,
};
static int __init wafwdt_init(void)
{
int ret;
// printk(KERN_INFO
;
if (timeout < 1 || timeout > 255) {
timeout = WD_TIMO;
// printk(KERN_INFO PFX
// "timeout value must be 1 <= x <= 255, using %d\n",
;
}
if (wdt_stop != wdt_start) {
if (!request_region(wdt_stop, 1, "Wafer 5823 WDT")) {
// printk(KERN_ERR PFX
// "I/O address 0x%04x already in use\n",
;
ret = -EIO;
goto error;
}
}
if (!request_region(wdt_start, 1, "Wafer 5823 WDT")) {
// printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
;
ret = -EIO;
goto error2;
}
ret = register_reboot_notifier(&wafwdt_notifier);
if (ret != 0) {
// printk(KERN_ERR PFX
;
goto error3;
}
ret = misc_register(&wafwdt_miscdev);
if (ret != 0) {
// printk(KERN_ERR PFX
// "cannot register miscdev on minor=%d (err=%d)\n",
;
goto error4;
}
// printk(KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
;
return ret;
error4:
unregister_reboot_notifier(&wafwdt_notifier);
error3:
release_region(wdt_start, 1);
error2:
if (wdt_stop != wdt_start)
release_region(wdt_stop, 1);
error:
return ret;
}
static void __exit wafwdt_exit(void)
{
misc_deregister(&wafwdt_miscdev);
unregister_reboot_notifier(&wafwdt_notifier);
if (wdt_stop != wdt_start)
release_region(wdt_stop, 1);
release_region(wdt_start, 1);
}
static long epx_c3_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
int options, retval = -EINVAL;
int __user *argp = (void __user *)arg;
static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING,
.firmware_version = 0,
.identity = "Winsystems EPX-C3 H/W Watchdog",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
if (copy_to_user(argp, &ident, sizeof(ident)))
return -EFAULT;
return 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, argp);
case WDIOC_SETOPTIONS:
if (get_user(options, argp))
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
epx_c3_stop();
retval = 0;
}
if (options & WDIOS_ENABLECARD) {
epx_c3_start();
retval = 0;
}
return retval;
case WDIOC_KEEPALIVE:
epx_c3_pet();
return 0;
case WDIOC_GETTIMEOUT:
return put_user(WATCHDOG_TIMEOUT, argp);
default:
return -ENOTTY;
}
}
static int epx_c3_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
epx_c3_stop(); /* Turn the WDT off */
return NOTIFY_DONE;
}
static const struct file_operations epx_c3_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = epx_c3_write,
.unlocked_ioctl = epx_c3_ioctl,
.open = epx_c3_open,
.release = epx_c3_release,
};
static struct miscdevice epx_c3_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &epx_c3_fops,
};
static struct notifier_block epx_c3_notifier = {
.notifier_call = epx_c3_notify_sys,
};
static const char banner[] __initconst = KERN_INFO PFX
"Hardware Watchdog Timer for Winsystems EPX-C3 SBC: 0.1\n";
static int __init watchdog_init(void)
{
int ret;
if (!request_region(EPXC3_WATCHDOG_CTL_REG, 2, "epxc3_watchdog"))
return -EBUSY;
ret = register_reboot_notifier(&epx_c3_notifier);
if (ret) {
printk(KERN_ERR PFX "cannot register reboot notifier "
"(err=%d)\n", ret);
goto out;
}
ret = misc_register(&epx_c3_miscdev);
if (ret) {
printk(KERN_ERR PFX "cannot register miscdev on minor=%d "
"(err=%d)\n", WATCHDOG_MINOR, ret);
unregister_reboot_notifier(&epx_c3_notifier);
goto out;
}
printk(banner);
return 0;
out:
release_region(EPXC3_WATCHDOG_CTL_REG, 2);
return ret;
}
static void __exit watchdog_exit(void)
{
misc_deregister(&epx_c3_miscdev);
unregister_reboot_notifier(&epx_c3_notifier);
release_region(EPXC3_WATCHDOG_CTL_REG, 2);
}
static long pnx833x_wdt_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
int options, new_timeout = 0;
uint32_t timeout, timeout_left = 0;
static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT,
.firmware_version = 0,
.identity = "Hardware Watchdog for PNX833x",
};
switch (cmd) {
default:
return -ENOTTY;
case WDIOC_GETSUPPORT:
if (copy_to_user((struct watchdog_info *)arg,
&ident, sizeof(ident)))
return -EFAULT;
return 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, (int *)arg);
case WDIOC_SETOPTIONS:
if (get_user(options, (int *)arg))
return -EFAULT;
if (options & WDIOS_DISABLECARD)
pnx833x_wdt_stop();
if (options & WDIOS_ENABLECARD)
pnx833x_wdt_start();
return 0;
case WDIOC_KEEPALIVE:
pnx833x_wdt_ping();
return 0;
case WDIOC_SETTIMEOUT:
{
if (get_user(new_timeout, (int *)arg))
return -EFAULT;
pnx833x_wdt_timeout = new_timeout;
PNX833X_REG(PNX833X_CONFIG +
PNX833X_CONFIG_CPU_WATCHDOG_COMPARE) = new_timeout;
return put_user(new_timeout, (int *)arg);
}
case WDIOC_GETTIMEOUT:
timeout = PNX833X_REG(PNX833X_CONFIG +
PNX833X_CONFIG_CPU_WATCHDOG_COMPARE);
return put_user(timeout, (int *)arg);
case WDIOC_GETTIMELEFT:
timeout_left = PNX833X_REG(PNX833X_CONFIG +
PNX833X_CONFIG_CPU_WATCHDOG);
return put_user(timeout_left, (int *)arg);
}
}
static int pnx833x_wdt_notify_sys(struct notifier_block *this,
unsigned long code, void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
pnx833x_wdt_stop(); /* Turn the WDT off */
return NOTIFY_DONE;
}
static const struct file_operations pnx833x_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = pnx833x_wdt_write,
.unlocked_ioctl = pnx833x_wdt_ioctl,
.open = pnx833x_wdt_open,
.release = pnx833x_wdt_release,
};
static struct miscdevice pnx833x_wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &pnx833x_wdt_fops,
};
static struct notifier_block pnx833x_wdt_notifier = {
.notifier_call = pnx833x_wdt_notify_sys,
};
static int __init watchdog_init(void)
{
int ret, cause;
/* Lets check the reason for the reset.*/
cause = PNX833X_REG(PNX833X_RESET);
/*If bit 31 is set then watchdog was cause of reset.*/
if (cause & 0x80000000) {
pr_info("The system was previously reset due to the watchdog firing - please investigate...\n");
}
ret = register_reboot_notifier(&pnx833x_wdt_notifier);
if (ret) {
pr_err("cannot register reboot notifier (err=%d)\n", ret);
return ret;
}
ret = misc_register(&pnx833x_wdt_miscdev);
if (ret) {
pr_err("cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
unregister_reboot_notifier(&pnx833x_wdt_notifier);
return ret;
}
pr_info("Hardware Watchdog Timer for PNX833x: Version 0.1\n");
if (start_enabled)
pnx833x_wdt_start();
return 0;
}
static void __exit watchdog_exit(void)
{
misc_deregister(&pnx833x_wdt_miscdev);
unregister_reboot_notifier(&pnx833x_wdt_notifier);
}
static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
| WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "W83877F",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_SETOPTIONS:
{
int new_options, retval = -EINVAL;
if (get_user(new_options, p))
return -EFAULT;
if (new_options & WDIOS_DISABLECARD) {
wdt_turnoff();
retval = 0;
}
if (new_options & WDIOS_ENABLECARD) {
wdt_startup();
retval = 0;
}
return retval;
}
case WDIOC_KEEPALIVE:
wdt_keepalive();
return 0;
case WDIOC_SETTIMEOUT:
{
int new_timeout;
if (get_user(new_timeout, p))
return -EFAULT;
/* arbitrary upper limit */
if (new_timeout < 1 || new_timeout > 3600)
return -EINVAL;
timeout = new_timeout;
wdt_keepalive();
/* Fall through */
}
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
return -ENOTTY;
}
}
static const struct file_operations wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = fop_write,
.open = fop_open,
.release = fop_close,
.unlocked_ioctl = fop_ioctl,
};
static struct miscdevice wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wdt_fops,
};
static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
wdt_turnoff();
return NOTIFY_DONE;
}
static struct notifier_block wdt_notifier = {
.notifier_call = wdt_notify_sys,
};
static void __exit w83877f_wdt_unload(void)
{
wdt_turnoff();
/* Deregister */
misc_deregister(&wdt_miscdev);
unregister_reboot_notifier(&wdt_notifier);
release_region(WDT_PING, 1);
release_region(ENABLE_W83877F_PORT, 2);
}
static int __init w83877f_wdt_init(void)
{
int rc = -EBUSY;
if (timeout < 1 || timeout > 3600) { /* arbitrary upper limit */
timeout = WATCHDOG_TIMEOUT;
printk(KERN_INFO PFX
"timeout value must be 1 <= x <= 3600, using %d\n",
timeout);
}
if (!request_region(ENABLE_W83877F_PORT, 2, "W83877F WDT")) {
printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
ENABLE_W83877F_PORT);
rc = -EIO;
goto err_out;
}
if (!request_region(WDT_PING, 1, "W8387FF WDT")) {
printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
WDT_PING);
rc = -EIO;
goto err_out_region1;
}
rc = register_reboot_notifier(&wdt_notifier);
if (rc) {
printk(KERN_ERR PFX
"cannot register reboot notifier (err=%d)\n", rc);
goto err_out_region2;
}
rc = misc_register(&wdt_miscdev);
if (rc) {
printk(KERN_ERR PFX
"cannot register miscdev on minor=%d (err=%d)\n",
wdt_miscdev.minor, rc);
goto err_out_reboot;
}
printk(KERN_INFO PFX
"WDT driver for W83877F initialised. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
return 0;
err_out_reboot:
unregister_reboot_notifier(&wdt_notifier);
err_out_region2:
release_region(WDT_PING, 1);
err_out_region1:
release_region(ENABLE_W83877F_PORT, 2);
err_out:
return rc;
}
static long wb_smsc_wdt_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
int new_timeout;
union {
struct watchdog_info __user *ident;
int __user *i;
} uarg;
static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
WDIOF_SETTIMEOUT |
WDIOF_MAGICCLOSE,
.firmware_version = 0,
.identity = "SMsC 37B787 Watchdog",
};
uarg.i = (int __user *)arg;
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(uarg.ident, &ident, sizeof(ident))
? -EFAULT : 0;
case WDIOC_GETSTATUS:
return put_user(wb_smsc_wdt_status(), uarg.i);
case WDIOC_GETBOOTSTATUS:
return put_user(0, uarg.i);
case WDIOC_SETOPTIONS:
{
int options, retval = -EINVAL;
if (get_user(options, uarg.i))
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
wb_smsc_wdt_disable();
retval = 0;
}
if (options & WDIOS_ENABLECARD) {
wb_smsc_wdt_enable();
retval = 0;
}
return retval;
}
case WDIOC_KEEPALIVE:
wb_smsc_wdt_reset_timer();
return 0;
case WDIOC_SETTIMEOUT:
if (get_user(new_timeout, uarg.i))
return -EFAULT;
/* the API states this is given in secs */
if (unit == UNIT_MINUTE)
new_timeout /= 60;
if (new_timeout < 0 || new_timeout > MAX_TIMEOUT)
return -EINVAL;
timeout = new_timeout;
wb_smsc_wdt_set_timeout(timeout);
/* fall through - and return the new timeout... */
case WDIOC_GETTIMEOUT:
new_timeout = timeout;
if (unit == UNIT_MINUTE)
new_timeout *= 60;
return put_user(new_timeout, uarg.i);
default:
return -ENOTTY;
}
}
/* -- Notifier funtions -----------------------------------------*/
static int wb_smsc_wdt_notify_sys(struct notifier_block *this,
unsigned long code, void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT) {
/* set timeout to 0, to avoid possible race-condition */
timeout = 0;
wb_smsc_wdt_disable();
}
return NOTIFY_DONE;
}
/* -- Module's structures ---------------------------------------*/
static const struct file_operations wb_smsc_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wb_smsc_wdt_write,
.unlocked_ioctl = wb_smsc_wdt_ioctl,
.open = wb_smsc_wdt_open,
.release = wb_smsc_wdt_release,
};
static struct notifier_block wb_smsc_wdt_notifier = {
.notifier_call = wb_smsc_wdt_notify_sys,
};
static struct miscdevice wb_smsc_wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wb_smsc_wdt_fops,
};
/* -- Module init functions -------------------------------------*/
/* module's "constructor" */
static int __init wb_smsc_wdt_init(void)
{
int ret;
pr_info("SMsC 37B787 watchdog component driver "
VERSION " initialising...\n");
if (!request_region(IOPORT, IOPORT_SIZE, "SMsC 37B787 watchdog")) {
pr_err("Unable to register IO port %#x\n", IOPORT);
ret = -EBUSY;
goto out_pnp;
}
/* set new maximum, if it's too big */
if (timeout > MAX_TIMEOUT)
timeout = MAX_TIMEOUT;
/* init the watchdog timer */
wb_smsc_wdt_initialize();
ret = register_reboot_notifier(&wb_smsc_wdt_notifier);
if (ret) {
pr_err("Unable to register reboot notifier err = %d\n", ret);
goto out_io;
}
ret = misc_register(&wb_smsc_wdt_miscdev);
if (ret) {
pr_err("Unable to register miscdev on minor %d\n",
WATCHDOG_MINOR);
goto out_rbt;
}
/* output info */
pr_info("Timeout set to %d %s\n",
timeout, (unit == UNIT_SECOND) ? "second(s)" : "minute(s)");
pr_info("Watchdog initialized and sleeping (nowayout=%d)...\n",
nowayout);
out_clean:
return ret;
out_rbt:
unregister_reboot_notifier(&wb_smsc_wdt_notifier);
out_io:
release_region(IOPORT, IOPORT_SIZE);
out_pnp:
goto out_clean;
}
/* module's "destructor" */
static void __exit wb_smsc_wdt_exit(void)
{
/* Stop the timer before we leave */
if (!nowayout) {
wb_smsc_wdt_shutdown();
pr_info("Watchdog disabled\n");
}
misc_deregister(&wb_smsc_wdt_miscdev);
unregister_reboot_notifier(&wb_smsc_wdt_notifier);
release_region(IOPORT, IOPORT_SIZE);
pr_info("SMsC 37B787 watchdog component driver removed\n");
}
module_init(wb_smsc_wdt_init);
module_exit(wb_smsc_wdt_exit);
MODULE_AUTHOR("Sven Anders <*****@*****.**>");
MODULE_DESCRIPTION("Driver for SMsC 37B787 watchdog component (Version "
VERSION ")");
MODULE_LICENSE("GPL");
#ifdef SMSC_SUPPORT_MINUTES
module_param(unit, int, 0);
MODULE_PARM_DESC(unit,
"set unit to use, 0=seconds or 1=minutes, default is 0");
#endif
module_param(timeout, int, 0);
MODULE_PARM_DESC(timeout, "range is 1-255 units, default is 60");
module_param(nowayout, bool, 0);
MODULE_PARM_DESC(nowayout,
"Watchdog cannot be stopped once started (default="
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
| WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "ALiM7101",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_SETOPTIONS:
{
int new_options, retval = -EINVAL;
if (get_user(new_options, p))
return -EFAULT;
if (new_options & WDIOS_DISABLECARD) {
wdt_turnoff();
retval = 0;
}
if (new_options & WDIOS_ENABLECARD) {
wdt_startup();
retval = 0;
}
return retval;
}
case WDIOC_KEEPALIVE:
wdt_keepalive();
return 0;
case WDIOC_SETTIMEOUT:
{
int new_timeout;
if (get_user(new_timeout, p))
return -EFAULT;
/* arbitrary upper limit */
if (new_timeout < 1 || new_timeout > 3600)
return -EINVAL;
timeout = new_timeout;
wdt_keepalive();
/* Fall through */
}
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
default:
return -ENOTTY;
}
}
static const struct file_operations wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = fop_write,
.open = fop_open,
.release = fop_close,
.unlocked_ioctl = fop_ioctl,
};
static struct miscdevice wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wdt_fops,
};
/*
* Notifier for system down
*/
static int wdt_notify_sys(struct notifier_block *this,
unsigned long code, void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
wdt_turnoff();
if (code == SYS_RESTART) {
/*
* Cobalt devices have no way of rebooting themselves other
* than getting the watchdog to pull reset, so we restart the
* watchdog on reboot with no heartbeat
*/
wdt_change(WDT_ENABLE);
printk(KERN_INFO PFX "Watchdog timer is now enabled "
"with no heartbeat - should reboot in ~1 second.\n");
}
return NOTIFY_DONE;
}
/*
* The WDT needs to learn about soft shutdowns in order to
* turn the timebomb registers off.
*/
static struct notifier_block wdt_notifier = {
.notifier_call = wdt_notify_sys,
};
static void __exit alim7101_wdt_unload(void)
{
wdt_turnoff();
/* Deregister */
misc_deregister(&wdt_miscdev);
unregister_reboot_notifier(&wdt_notifier);
pci_dev_put(alim7101_pmu);
}
static int __init alim7101_wdt_init(void)
{
int rc = -EBUSY;
struct pci_dev *ali1543_south;
char tmp;
printk(KERN_INFO PFX "Steve Hill <*****@*****.**>.\n");
alim7101_pmu = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101,
NULL);
if (!alim7101_pmu) {
printk(KERN_INFO PFX
"ALi M7101 PMU not present - WDT not set\n");
return -EBUSY;
}
/* Set the WDT in the PMU to 1 second */
pci_write_config_byte(alim7101_pmu, ALI_7101_WDT, 0x02);
ali1543_south = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
NULL);
if (!ali1543_south) {
printk(KERN_INFO PFX
"ALi 1543 South-Bridge not present - WDT not set\n");
goto err_out;
}
pci_read_config_byte(ali1543_south, 0x5e, &tmp);
pci_dev_put(ali1543_south);
if ((tmp & 0x1e) == 0x00) {
if (!use_gpio) {
printk(KERN_INFO PFX
"Detected old alim7101 revision 'a1d'. "
"If this is a cobalt board, set the 'use_gpio' "
"module parameter.\n");
goto err_out;
}
nowayout = 1;
} else if ((tmp & 0x1e) != 0x12 && (tmp & 0x1e) != 0x00) {
printk(KERN_INFO PFX
"ALi 1543 South-Bridge does not have the correct "
"revision number (???1001?) - WDT not set\n");
goto err_out;
}
if (timeout < 1 || timeout > 3600) {
/* arbitrary upper limit */
timeout = WATCHDOG_TIMEOUT;
printk(KERN_INFO PFX
"timeout value must be 1 <= x <= 3600, using %d\n",
timeout);
}
rc = register_reboot_notifier(&wdt_notifier);
if (rc) {
printk(KERN_ERR PFX
"cannot register reboot notifier (err=%d)\n", rc);
goto err_out;
}
rc = misc_register(&wdt_miscdev);
if (rc) {
printk(KERN_ERR PFX
"cannot register miscdev on minor=%d (err=%d)\n",
wdt_miscdev.minor, rc);
goto err_out_reboot;
}
if (nowayout)
__module_get(THIS_MODULE);
printk(KERN_INFO PFX "WDT driver for ALi M7101 initialised. "
"timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
return 0;
err_out_reboot:
unregister_reboot_notifier(&wdt_notifier);
err_out:
pci_dev_put(alim7101_pmu);
return rc;
}
static int acq_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
int options, retval = -EINVAL;
void __user *argp = (void __user *)arg;
int __user *p = argp;
static struct watchdog_info ident =
{
.options = WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "Acquire WDT",
};
switch(cmd)
{
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_KEEPALIVE:
acq_keepalive();
return 0;
case WDIOC_GETTIMEOUT:
return put_user(WATCHDOG_HEARTBEAT, p);
case WDIOC_SETOPTIONS:
{
if (get_user(options, p))
return -EFAULT;
if (options & WDIOS_DISABLECARD)
{
acq_stop();
retval = 0;
}
if (options & WDIOS_ENABLECARD)
{
acq_keepalive();
retval = 0;
}
return retval;
}
default:
return -ENOTTY;
}
}
static int acq_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &acq_is_open))
return -EBUSY;
if (nowayout)
__module_get(THIS_MODULE);
/* Activate */
acq_keepalive();
return nonseekable_open(inode, file);
}
static int acq_close(struct inode *inode, struct file *file)
{
if (expect_close == 42) {
acq_stop();
} else {
printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
acq_keepalive();
}
clear_bit(0, &acq_is_open);
expect_close = 0;
return 0;
}
/*
* Notifier for system down
*/
static int acq_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if(code==SYS_DOWN || code==SYS_HALT) {
/* Turn the WDT off */
acq_stop();
}
return NOTIFY_DONE;
}
/*
* Kernel Interfaces
*/
static const struct file_operations acq_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = acq_write,
.ioctl = acq_ioctl,
.open = acq_open,
.release = acq_close,
};
static struct miscdevice acq_miscdev=
{
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &acq_fops,
};
/*
* The WDT card needs to learn about soft shutdowns in order to
* turn the timebomb registers off.
*/
static struct notifier_block acq_notifier =
{
.notifier_call = acq_notify_sys,
};
static int __init acq_init(void)
{
int ret;
printk(KERN_INFO "WDT driver for Acquire single board computer initialising.\n");
if (wdt_stop != wdt_start) {
if (!request_region(wdt_stop, 1, WATCHDOG_NAME)) {
printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
wdt_stop);
ret = -EIO;
goto out;
}
}
if (!request_region(wdt_start, 1, WATCHDOG_NAME)) {
printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
wdt_start);
ret = -EIO;
goto unreg_stop;
}
ret = register_reboot_notifier(&acq_notifier);
if (ret != 0) {
printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
ret);
goto unreg_regions;
}
ret = misc_register(&acq_miscdev);
if (ret != 0) {
printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
goto unreg_reboot;
}
printk (KERN_INFO PFX "initialized. (nowayout=%d)\n",
nowayout);
return 0;
unreg_reboot:
unregister_reboot_notifier(&acq_notifier);
unreg_regions:
release_region(wdt_start, 1);
unreg_stop:
if (wdt_stop != wdt_start)
release_region(wdt_stop, 1);
out:
return ret;
}
static void __exit acq_exit(void)
{
misc_deregister(&acq_miscdev);
unregister_reboot_notifier(&acq_notifier);
if(wdt_stop != wdt_start)
release_region(wdt_stop,1);
release_region(wdt_start,1);
}
static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
static struct watchdog_info ident=
{
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "SBC60xx",
};
switch(cmd)
{
default:
return -ENOTTY;
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_KEEPALIVE:
wdt_keepalive();
return 0;
case WDIOC_SETOPTIONS:
{
int new_options, retval = -EINVAL;
if(get_user(new_options, p))
return -EFAULT;
if(new_options & WDIOS_DISABLECARD) {
wdt_turnoff();
retval = 0;
}
if(new_options & WDIOS_ENABLECARD) {
wdt_startup();
retval = 0;
}
return retval;
}
case WDIOC_SETTIMEOUT:
{
int new_timeout;
if(get_user(new_timeout, p))
return -EFAULT;
if(new_timeout < 1 || new_timeout > 3600) /* arbitrary upper limit */
return -EINVAL;
timeout = new_timeout;
wdt_keepalive();
/* Fall through */
}
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
}
}
static const struct file_operations wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = fop_write,
.open = fop_open,
.release = fop_close,
.ioctl = fop_ioctl,
};
static struct miscdevice wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wdt_fops,
};
/*
* Notifier for system down
*/
static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if(code==SYS_DOWN || code==SYS_HALT)
wdt_turnoff();
return NOTIFY_DONE;
}
/*
* The WDT needs to learn about soft shutdowns in order to
* turn the timebomb registers off.
*/
static struct notifier_block wdt_notifier=
{
.notifier_call = wdt_notify_sys,
};
static void __exit sbc60xxwdt_unload(void)
{
wdt_turnoff();
/* Deregister */
misc_deregister(&wdt_miscdev);
unregister_reboot_notifier(&wdt_notifier);
if ((wdt_stop != 0x45) && (wdt_stop != wdt_start))
release_region(wdt_stop,1);
release_region(wdt_start,1);
}
static int __init sbc60xxwdt_init(void)
{
int rc = -EBUSY;
if(timeout < 1 || timeout > 3600) /* arbitrary upper limit */
{
timeout = WATCHDOG_TIMEOUT;
printk(KERN_INFO PFX "timeout value must be 1<=x<=3600, using %d\n",
timeout);
}
if (!request_region(wdt_start, 1, "SBC 60XX WDT"))
{
printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
wdt_start);
rc = -EIO;
goto err_out;
}
/* We cannot reserve 0x45 - the kernel already has! */
if ((wdt_stop != 0x45) && (wdt_stop != wdt_start))
{
if (!request_region(wdt_stop, 1, "SBC 60XX WDT"))
{
printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
wdt_stop);
rc = -EIO;
goto err_out_region1;
}
}
init_timer(&timer);
timer.function = wdt_timer_ping;
timer.data = 0;
rc = misc_register(&wdt_miscdev);
if (rc)
{
printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
wdt_miscdev.minor, rc);
goto err_out_region2;
}
rc = register_reboot_notifier(&wdt_notifier);
if (rc)
{
printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
rc);
goto err_out_miscdev;
}
printk(KERN_INFO PFX "WDT driver for 60XX single board computer initialised. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
return 0;
err_out_miscdev:
misc_deregister(&wdt_miscdev);
err_out_region2:
if ((wdt_stop != 0x45) && (wdt_stop != wdt_start))
release_region(wdt_stop,1);
err_out_region1:
release_region(wdt_start,1);
err_out:
return rc;
}
static int exynos5_devfreq_int_probe(struct platform_device *pdev)
{
int ret = 0;
struct devfreq_data_int *data;
struct devfreq_notifier_block *devfreq_nb;
struct exynos_devfreq_platdata *plat_data;
data = kzalloc(sizeof(struct devfreq_data_int), GFP_KERNEL);
if (data == NULL) {
pr_err("DEVFREQ(INT) : Failed to allocate private data\n");
ret = -ENOMEM;
goto err_data;
}
exynos5433_devfreq_int_init(data);
data->initial_freq = exynos5_devfreq_int_profile.initial_freq;
exynos5_devfreq_int_profile.freq_table = kzalloc(sizeof(int) * data->max_state, GFP_KERNEL);
if (exynos5_devfreq_int_profile.freq_table == NULL) {
pr_err("DEVFREQ(INT) : Failed to allocate freq table\n");
ret = -ENOMEM;
goto err_freqtable;
}
ret = exynos5_init_int_table(&pdev->dev, data);
if (ret)
goto err_inittable;
platform_set_drvdata(pdev, data);
mutex_init(&data->lock);
data->target_volt = get_match_volt(ID_INT, DEVFREQ_INITIAL_FREQ);
data->volt_constraint_isp = 0;
data->volt_offset = 0;
int_dev =
data->dev = &pdev->dev;
data->vdd_int = regulator_get(NULL, "vdd_int");
if (IS_ERR_OR_NULL(data->vdd_int)) {
pr_err("DEVFREQ(INT) : Failed to get regulator\n");
goto err_inittable;
}
data->vdd_int_m = regulator_get(NULL, "vdd_int_m");
if (IS_ERR(data->vdd_int)) {
dev_err(data->dev, "DEVFREQ(INT) : failed to get regulator\n");
goto err_regulator_m;
}
data->devfreq = devfreq_add_device(data->dev,
&exynos5_devfreq_int_profile,
"simple_ondemand",
&exynos5_devfreq_int_governor_data);
devfreq_nb = kzalloc(sizeof(struct devfreq_notifier_block), GFP_KERNEL);
if (devfreq_nb == NULL) {
pr_err("DEVFREQ(INT) : Failed to allocate notifier block\n");
ret = -ENOMEM;
goto err_nb;
}
devfreq_nb->df = data->devfreq;
devfreq_nb->nb.notifier_call = exynos5_devfreq_int_notifier;
exynos5433_devfreq_register(&devfreq_int_exynos);
exynos5433_ppmu_register_notifier(INT, &devfreq_nb->nb);
plat_data = data->dev->platform_data;
data->default_qos = plat_data->default_qos;
data->devfreq->min_freq = plat_data->default_qos;
data->devfreq->max_freq = devfreq_int_opp_list[0].freq;
register_reboot_notifier(&exynos5_int_reboot_notifier);
#ifdef CONFIG_EXYNOS_THERMAL
data->tmu_notifier.notifier_call = exynos5_devfreq_int_tmu_notifier;
exynos_tmu_add_notifier(&data->tmu_notifier);
#endif
data->use_dvfs = true;
return ret;
err_nb:
devfreq_remove_device(data->devfreq);
regulator_put(data->vdd_int_m);
err_regulator_m:
regulator_put(data->vdd_int);
err_inittable:
kfree(exynos5_devfreq_int_profile.freq_table);
err_freqtable:
kfree(data);
err_data:
return ret;
}
static int
wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_timeout;
static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "W83627HF WDT",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
if (copy_to_user(argp, &ident, sizeof(ident)))
return -EFAULT;
break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_KEEPALIVE:
wdt_ping();
break;
case WDIOC_SETTIMEOUT:
if (get_user(new_timeout, p))
return -EFAULT;
if (wdt_set_heartbeat(new_timeout))
return -EINVAL;
wdt_ping();
/* Fall */
case WDIOC_GETTIMEOUT:
return put_user(timeout, p);
case WDIOC_SETOPTIONS:
{
int options, retval = -EINVAL;
if (get_user(options, p))
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
wdt_disable();
retval = 0;
}
if (options & WDIOS_ENABLECARD) {
wdt_ping();
retval = 0;
}
return retval;
}
default:
return -ENOIOCTLCMD;
}
return 0;
}
static int
wdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
/*
* Activate
*/
wdt_ping();
return nonseekable_open(inode, file);
}
static int
wdt_close(struct inode *inode, struct file *file)
{
if (expect_close == 42) {
wdt_disable();
} else {
printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
wdt_ping();
}
expect_close = 0;
clear_bit(0, &wdt_is_open);
return 0;
}
/*
* Notifier for system down
*/
static int
wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT) {
/* Turn the WDT off */
wdt_disable();
}
return NOTIFY_DONE;
}
/*
* Kernel Interfaces
*/
static struct file_operations wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wdt_write,
.ioctl = wdt_ioctl,
.open = wdt_open,
.release = wdt_close,
};
static struct miscdevice wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wdt_fops,
};
/*
* The WDT needs to learn about soft shutdowns in order to
* turn the timebomb registers off.
*/
static struct notifier_block wdt_notifier = {
.notifier_call = wdt_notify_sys,
};
static int __init
wdt_init(void)
{
int ret;
printk(KERN_INFO "WDT driver for the Winbond(TM) W83627HF Super I/O chip initialising.\n");
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);
printk (KERN_INFO PFX "timeout value must be 1<=timeout<=63, using %d\n",
WATCHDOG_TIMEOUT);
}
if (!request_region(wdt_io, 1, WATCHDOG_NAME)) {
printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
wdt_io);
ret = -EIO;
goto out;
}
w83627hf_init();
ret = register_reboot_notifier(&wdt_notifier);
if (ret != 0) {
printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
ret);
goto unreg_regions;
}
ret = misc_register(&wdt_miscdev);
if (ret != 0) {
printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
goto unreg_reboot;
}
printk (KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
out:
return ret;
unreg_reboot:
unregister_reboot_notifier(&wdt_notifier);
unreg_regions:
release_region(wdt_io, 1);
goto out;
}
static void __exit
wdt_exit(void)
{
misc_deregister(&wdt_miscdev);
unregister_reboot_notifier(&wdt_notifier);
release_region(wdt_io,1);
}
static int softdog_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_margin;
static struct watchdog_info ident = {
.options = WDIOF_SETTIMEOUT |
WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
.firmware_version = 0,
.identity = "Software Watchdog",
};
switch (cmd) {
default:
return -ENOTTY;
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident,
sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_KEEPALIVE:
softdog_keepalive();
return 0;
case WDIOC_SETTIMEOUT:
if (get_user(new_margin, p))
return -EFAULT;
if (softdog_set_heartbeat(new_margin))
return -EINVAL;
softdog_keepalive();
/* Fall */
case WDIOC_GETTIMEOUT:
return put_user(soft_margin, p);
}
}
/*
* Notifier for system down
*/
static int softdog_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if(code==SYS_DOWN || code==SYS_HALT) {
/* Turn the WDT off */
softdog_stop();
}
return NOTIFY_DONE;
}
/*
* Kernel Interfaces
*/
static const struct file_operations softdog_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = softdog_write,
.ioctl = softdog_ioctl,
.open = softdog_open,
.release = softdog_release,
};
static struct miscdevice softdog_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &softdog_fops,
};
static struct notifier_block softdog_notifier = {
.notifier_call = softdog_notify_sys,
};
static char banner[] __initdata = KERN_INFO "Software Watchdog Timer: 0.07 initialized. soft_noboot=%d soft_margin=%d sec (nowayout= %d)\n";
static int __init watchdog_init(void)
{
int ret;
/* Check that the soft_margin value is within it's range ; if not reset to the default */
if (softdog_set_heartbeat(soft_margin)) {
softdog_set_heartbeat(TIMER_MARGIN);
printk(KERN_INFO PFX "soft_margin value must be 0<soft_margin<65536, using %d\n",
TIMER_MARGIN);
}
ret = register_reboot_notifier(&softdog_notifier);
if (ret) {
printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
ret);
return ret;
}
ret = misc_register(&softdog_miscdev);
if (ret) {
printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
unregister_reboot_notifier(&softdog_notifier);
return ret;
}
printk(banner, soft_noboot, soft_margin, nowayout);
return 0;
}
static void __exit watchdog_exit(void)
{
misc_deregister(&softdog_miscdev);
unregister_reboot_notifier(&softdog_notifier);
}
