Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] omap_wdt.c: move probe function to .devinit.text [WATCHDOG] ks8695_wdt.c: move probe function to .devinit.text [WATCHDOG] at91rm9200_wdt.c: move probe function to .devinit.text [WATCHDOG] remove ARM26 sections [WATCHDOG] orion5x_wdt: Add shutdown callback, use watchdog ping function [WATCHDOG] i6300esb.c: Restructure initialization of the device [WATCHDOG] i6300esb.c: Fix the GETSTATUS and GETBOOTSTATUS ioctls. [WATCHDOG] i6300esb.c: Cleanup
This commit is contained in:
Linus Torvalds
Коммит
01e4c5d39f
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@ -240,8 +240,6 @@ config ORION5X_WATCHDOG
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To compile this driver as a module, choose M here: the
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module will be called orion5x_wdt.
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# ARM26 Architecture
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# AVR32 Architecture
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config AT32AP700X_WDT
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@ -42,8 +42,6 @@ obj-$(CONFIG_IOP_WATCHDOG) += iop_wdt.o
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obj-$(CONFIG_DAVINCI_WATCHDOG) += davinci_wdt.o
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obj-$(CONFIG_ORION5X_WATCHDOG) += orion5x_wdt.o
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# ARM26 Architecture
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# AVR32 Architecture
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obj-$(CONFIG_AT32AP700X_WDT) += at32ap700x_wdt.o
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@ -197,7 +197,7 @@ static struct miscdevice at91wdt_miscdev = {
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.fops = &at91wdt_fops,
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};
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static int __init at91wdt_probe(struct platform_device *pdev)
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static int __devinit at91wdt_probe(struct platform_device *pdev)
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{
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int res;
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@ -214,7 +214,7 @@ static int __init at91wdt_probe(struct platform_device *pdev)
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return 0;
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}
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static int __exit at91wdt_remove(struct platform_device *pdev)
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static int __devexit at91wdt_remove(struct platform_device *pdev)
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{
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int res;
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@ -252,7 +252,7 @@ static int at91wdt_resume(struct platform_device *pdev)
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static struct platform_driver at91wdt_driver = {
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.probe = at91wdt_probe,
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.remove = __exit_p(at91wdt_remove),
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.remove = __devexit_p(at91wdt_remove),
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.shutdown = at91wdt_shutdown,
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.suspend = at91wdt_suspend,
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.resume = at91wdt_resume,
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@ -52,10 +52,10 @@
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#define ESB_LOCK_REG 0x68 /* WDT lock register */
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/* Memory mapped registers */
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#define ESB_TIMER1_REG BASEADDR + 0x00 /* Timer1 value after each reset */
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#define ESB_TIMER2_REG BASEADDR + 0x04 /* Timer2 value after each reset */
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#define ESB_GINTSR_REG BASEADDR + 0x08 /* General Interrupt Status Register */
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#define ESB_RELOAD_REG BASEADDR + 0x0c /* Reload register */
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#define ESB_TIMER1_REG (BASEADDR + 0x00)/* Timer1 value after each reset */
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#define ESB_TIMER2_REG (BASEADDR + 0x04)/* Timer2 value after each reset */
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#define ESB_GINTSR_REG (BASEADDR + 0x08)/* General Interrupt Status Register */
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#define ESB_RELOAD_REG (BASEADDR + 0x0c)/* Reload register */
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/* Lock register bits */
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#define ESB_WDT_FUNC (0x01 << 2) /* Watchdog functionality */
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@ -68,6 +68,7 @@
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#define ESB_WDT_INTTYPE (0x11 << 0) /* Interrupt type on timer1 timeout */
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/* Reload register bits */
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#define ESB_WDT_TIMEOUT (0x01 << 9) /* Watchdog timed out */
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#define ESB_WDT_RELOAD (0x01 << 8) /* prevent timeout */
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/* Magic constants */
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@ -87,7 +88,6 @@ static struct platform_device *esb_platform_device;
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/* 30 sec default heartbeat (1 < heartbeat < 2*1023) */
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#define WATCHDOG_HEARTBEAT 30
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static int heartbeat = WATCHDOG_HEARTBEAT; /* in seconds */
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module_param(heartbeat, int, 0);
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MODULE_PARM_DESC(heartbeat,
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"Watchdog heartbeat in seconds. (1<heartbeat<2046, default="
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@ -123,7 +123,7 @@ static int esb_timer_start(void)
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esb_unlock_registers();
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writew(ESB_WDT_RELOAD, ESB_RELOAD_REG);
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/* Enable or Enable + Lock? */
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val = 0x02 | (nowayout ? 0x01 : 0x00);
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val = ESB_WDT_ENABLE | (nowayout ? ESB_WDT_LOCK : 0x00);
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pci_write_config_byte(esb_pci, ESB_LOCK_REG, val);
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spin_unlock(&esb_lock);
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return 0;
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@ -143,7 +143,7 @@ static int esb_timer_stop(void)
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spin_unlock(&esb_lock);
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/* Returns 0 if the timer was disabled, non-zero otherwise */
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return (val & 0x01);
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return val & ESB_WDT_ENABLE;
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}
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static void esb_timer_keepalive(void)
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@ -190,18 +190,6 @@ static int esb_timer_set_heartbeat(int time)
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return 0;
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}
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static int esb_timer_read(void)
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{
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u32 count;
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/* This isn't documented, and doesn't take into
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* acount which stage is running, but it looks
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* like a 20 bit count down, so we might as well report it.
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*/
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pci_read_config_dword(esb_pci, 0x64, &count);
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return (int)count;
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}
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/*
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* /dev/watchdog handling
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*/
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@ -282,7 +270,7 @@ static long esb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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sizeof(ident)) ? -EFAULT : 0;
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case WDIOC_GETSTATUS:
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return put_user(esb_timer_read(), p);
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return put_user(0, p);
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case WDIOC_GETBOOTSTATUS:
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return put_user(triggered, p);
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@ -362,8 +350,6 @@ MODULE_DEVICE_TABLE(pci, esb_pci_tbl);
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static unsigned char __devinit esb_getdevice(void)
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{
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u8 val1;
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unsigned short val2;
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/*
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* Find the PCI device
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*/
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@ -371,66 +357,79 @@ static unsigned char __devinit esb_getdevice(void)
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esb_pci = pci_get_device(PCI_VENDOR_ID_INTEL,
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PCI_DEVICE_ID_INTEL_ESB_9, NULL);
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if (esb_pci) {
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if (pci_enable_device(esb_pci)) {
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printk(KERN_ERR PFX "failed to enable device\n");
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goto err_devput;
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}
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if (!esb_pci)
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return 0;
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if (pci_request_region(esb_pci, 0, ESB_MODULE_NAME)) {
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printk(KERN_ERR PFX "failed to request region\n");
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goto err_disable;
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}
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if (pci_enable_device(esb_pci)) {
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printk(KERN_ERR PFX "failed to enable device\n");
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goto err_devput;
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}
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BASEADDR = pci_ioremap_bar(esb_pci, 0);
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if (BASEADDR == NULL) {
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/* Something's wrong here, BASEADDR has to be set */
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printk(KERN_ERR PFX "failed to get BASEADDR\n");
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goto err_release;
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}
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if (pci_request_region(esb_pci, 0, ESB_MODULE_NAME)) {
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printk(KERN_ERR PFX "failed to request region\n");
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goto err_disable;
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}
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/*
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* The watchdog has two timers, it can be setup so that the
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* expiry of timer1 results in an interrupt and the expiry of
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* timer2 results in a reboot. We set it to not generate
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* any interrupts as there is not much we can do with it
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* right now.
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*
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* We also enable reboots and set the timer frequency to
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* the PCI clock divided by 2^15 (approx 1KHz).
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*/
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pci_write_config_word(esb_pci, ESB_CONFIG_REG, 0x0003);
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BASEADDR = pci_ioremap_bar(esb_pci, 0);
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if (BASEADDR == NULL) {
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/* Something's wrong here, BASEADDR has to be set */
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printk(KERN_ERR PFX "failed to get BASEADDR\n");
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goto err_release;
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}
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/* Check that the WDT isn't already locked */
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pci_read_config_byte(esb_pci, ESB_LOCK_REG, &val1);
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if (val1 & ESB_WDT_LOCK)
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printk(KERN_WARNING PFX "nowayout already set\n");
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/* Set the timer to watchdog mode and disable it for now */
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pci_write_config_byte(esb_pci, ESB_LOCK_REG, 0x00);
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/* Check if the watchdog was previously triggered */
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esb_unlock_registers();
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val2 = readw(ESB_RELOAD_REG);
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triggered = (val2 & (0x01 << 9) >> 9);
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/* Reset trigger flag and timers */
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esb_unlock_registers();
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writew((0x11 << 8), ESB_RELOAD_REG);
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/* Done */
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return 1;
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/* Done */
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return 1;
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err_release:
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pci_release_region(esb_pci, 0);
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pci_release_region(esb_pci, 0);
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err_disable:
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pci_disable_device(esb_pci);
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pci_disable_device(esb_pci);
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err_devput:
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pci_dev_put(esb_pci);
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}
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pci_dev_put(esb_pci);
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return 0;
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}
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static void __devinit esb_initdevice(void)
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{
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u8 val1;
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u16 val2;
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/*
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* Config register:
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* Bit 5 : 0 = Enable WDT_OUTPUT
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* Bit 2 : 0 = set the timer frequency to the PCI clock
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* divided by 2^15 (approx 1KHz).
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* Bits 1:0 : 11 = WDT_INT_TYPE Disabled.
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* The watchdog has two timers, it can be setup so that the
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* expiry of timer1 results in an interrupt and the expiry of
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* timer2 results in a reboot. We set it to not generate
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* any interrupts as there is not much we can do with it
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* right now.
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*/
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pci_write_config_word(esb_pci, ESB_CONFIG_REG, 0x0003);
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/* Check that the WDT isn't already locked */
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pci_read_config_byte(esb_pci, ESB_LOCK_REG, &val1);
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if (val1 & ESB_WDT_LOCK)
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printk(KERN_WARNING PFX "nowayout already set\n");
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/* Set the timer to watchdog mode and disable it for now */
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pci_write_config_byte(esb_pci, ESB_LOCK_REG, 0x00);
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/* Check if the watchdog was previously triggered */
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esb_unlock_registers();
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val2 = readw(ESB_RELOAD_REG);
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if (val2 & ESB_WDT_TIMEOUT)
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triggered = WDIOF_CARDRESET;
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/* Reset WDT_TIMEOUT flag and timers */
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esb_unlock_registers();
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writew((ESB_WDT_TIMEOUT | ESB_WDT_RELOAD), ESB_RELOAD_REG);
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/* And set the correct timeout value */
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esb_timer_set_heartbeat(heartbeat);
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}
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static int __devinit esb_probe(struct platform_device *dev)
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{
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int ret;
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@ -441,13 +440,17 @@ static int __devinit esb_probe(struct platform_device *dev)
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/* Check that the heartbeat value is within it's range;
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if not reset to the default */
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if (esb_timer_set_heartbeat(heartbeat)) {
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esb_timer_set_heartbeat(WATCHDOG_HEARTBEAT);
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if (heartbeat < 0x1 || heartbeat > 2 * 0x03ff) {
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heartbeat = WATCHDOG_HEARTBEAT;
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printk(KERN_INFO PFX
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"heartbeat value must be 1<heartbeat<2046, using %d\n",
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heartbeat);
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}
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/* Initialize the watchdog and make sure it does not run */
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esb_initdevice();
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/* Register the watchdog so that userspace has access to it */
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ret = misc_register(&esb_miscdev);
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if (ret != 0) {
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printk(KERN_ERR PFX
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@ -455,7 +458,6 @@ static int __devinit esb_probe(struct platform_device *dev)
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WATCHDOG_MINOR, ret);
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goto err_unmap;
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}
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esb_timer_stop();
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printk(KERN_INFO PFX
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"initialized (0x%p). heartbeat=%d sec (nowayout=%d)\n",
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BASEADDR, heartbeat, nowayout);
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@ -463,11 +465,8 @@ static int __devinit esb_probe(struct platform_device *dev)
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err_unmap:
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iounmap(BASEADDR);
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/* err_release: */
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pci_release_region(esb_pci, 0);
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/* err_disable: */
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pci_disable_device(esb_pci);
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/* err_devput: */
|
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pci_dev_put(esb_pci);
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return ret;
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}
|
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|
|
|
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|
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@ -221,7 +221,7 @@ static struct miscdevice ks8695wdt_miscdev = {
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.fops = &ks8695wdt_fops,
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};
|
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|
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static int __init ks8695wdt_probe(struct platform_device *pdev)
|
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static int __devinit ks8695wdt_probe(struct platform_device *pdev)
|
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{
|
||||
int res;
|
||||
|
||||
|
|
@ -238,7 +238,7 @@ static int __init ks8695wdt_probe(struct platform_device *pdev)
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|||
return 0;
|
||||
}
|
||||
|
||||
static int __exit ks8695wdt_remove(struct platform_device *pdev)
|
||||
static int __devexit ks8695wdt_remove(struct platform_device *pdev)
|
||||
{
|
||||
int res;
|
||||
|
||||
|
|
@ -276,7 +276,7 @@ static int ks8695wdt_resume(struct platform_device *pdev)
|
|||
|
||||
static struct platform_driver ks8695wdt_driver = {
|
||||
.probe = ks8695wdt_probe,
|
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.remove = __exit_p(ks8695wdt_remove),
|
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.remove = __devexit_p(ks8695wdt_remove),
|
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.shutdown = ks8695wdt_shutdown,
|
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.suspend = ks8695wdt_suspend,
|
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.resume = ks8695wdt_resume,
|
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|
|
|
|||
|
|
@ -258,7 +258,7 @@ static const struct file_operations omap_wdt_fops = {
|
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.release = omap_wdt_release,
|
||||
};
|
||||
|
||||
static int __init omap_wdt_probe(struct platform_device *pdev)
|
||||
static int __devinit omap_wdt_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct resource *res, *mem;
|
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struct omap_wdt_dev *wdev;
|
||||
|
|
@ -367,7 +367,7 @@ static void omap_wdt_shutdown(struct platform_device *pdev)
|
|||
omap_wdt_disable(wdev);
|
||||
}
|
||||
|
||||
static int omap_wdt_remove(struct platform_device *pdev)
|
||||
static int __devexit omap_wdt_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct omap_wdt_dev *wdev = platform_get_drvdata(pdev);
|
||||
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
|
|
@ -426,7 +426,7 @@ static int omap_wdt_resume(struct platform_device *pdev)
|
|||
|
||||
static struct platform_driver omap_wdt_driver = {
|
||||
.probe = omap_wdt_probe,
|
||||
.remove = omap_wdt_remove,
|
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.remove = __devexit_p(omap_wdt_remove),
|
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.shutdown = omap_wdt_shutdown,
|
||||
.suspend = omap_wdt_suspend,
|
||||
.resume = omap_wdt_resume,
|
||||
|
|
|
|||
|
|
@ -42,7 +42,17 @@ static unsigned int wdt_tclk;
|
|||
static unsigned long wdt_status;
|
||||
static spinlock_t wdt_lock;
|
||||
|
||||
static void wdt_enable(void)
|
||||
static void orion5x_wdt_ping(void)
|
||||
{
|
||||
spin_lock(&wdt_lock);
|
||||
|
||||
/* Reload watchdog duration */
|
||||
writel(wdt_tclk * heartbeat, WDT_VAL);
|
||||
|
||||
spin_unlock(&wdt_lock);
|
||||
}
|
||||
|
||||
static void orion5x_wdt_enable(void)
|
||||
{
|
||||
u32 reg;
|
||||
|
||||
|
|
@ -69,7 +79,7 @@ static void wdt_enable(void)
|
|||
spin_unlock(&wdt_lock);
|
||||
}
|
||||
|
||||
static void wdt_disable(void)
|
||||
static void orion5x_wdt_disable(void)
|
||||
{
|
||||
u32 reg;
|
||||
|
||||
|
|
@ -101,7 +111,7 @@ static int orion5x_wdt_open(struct inode *inode, struct file *file)
|
|||
if (test_and_set_bit(WDT_IN_USE, &wdt_status))
|
||||
return -EBUSY;
|
||||
clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
|
||||
wdt_enable();
|
||||
orion5x_wdt_enable();
|
||||
return nonseekable_open(inode, file);
|
||||
}
|
||||
|
||||
|
|
@ -122,18 +132,28 @@ static ssize_t orion5x_wdt_write(struct file *file, const char *data,
|
|||
set_bit(WDT_OK_TO_CLOSE, &wdt_status);
|
||||
}
|
||||
}
|
||||
wdt_enable();
|
||||
orion5x_wdt_ping();
|
||||
}
|
||||
return len;
|
||||
}
|
||||
|
||||
static struct watchdog_info ident = {
|
||||
static int orion5x_wdt_settimeout(int new_time)
|
||||
{
|
||||
if ((new_time <= 0) || (new_time > wdt_max_duration))
|
||||
return -EINVAL;
|
||||
|
||||
/* Set new watchdog time to be used when
|
||||
* orion5x_wdt_enable() or orion5x_wdt_ping() is called. */
|
||||
heartbeat = new_time;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct watchdog_info ident = {
|
||||
.options = WDIOF_MAGICCLOSE | WDIOF_SETTIMEOUT |
|
||||
WDIOF_KEEPALIVEPING,
|
||||
.identity = "Orion5x Watchdog",
|
||||
};
|
||||
|
||||
|
||||
static long orion5x_wdt_ioctl(struct file *file, unsigned int cmd,
|
||||
unsigned long arg)
|
||||
{
|
||||
|
|
@ -152,7 +172,7 @@ static long orion5x_wdt_ioctl(struct file *file, unsigned int cmd,
|
|||
break;
|
||||
|
||||
case WDIOC_KEEPALIVE:
|
||||
wdt_enable();
|
||||
orion5x_wdt_ping();
|
||||
ret = 0;
|
||||
break;
|
||||
|
||||
|
|
@ -161,12 +181,11 @@ static long orion5x_wdt_ioctl(struct file *file, unsigned int cmd,
|
|||
if (ret)
|
||||
break;
|
||||
|
||||
if (time <= 0 || time > wdt_max_duration) {
|
||||
if (orion5x_wdt_settimeout(time)) {
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
}
|
||||
heartbeat = time;
|
||||
wdt_enable();
|
||||
orion5x_wdt_ping();
|
||||
/* Fall through */
|
||||
|
||||
case WDIOC_GETTIMEOUT:
|
||||
|
|
@ -187,7 +206,7 @@ static long orion5x_wdt_ioctl(struct file *file, unsigned int cmd,
|
|||
static int orion5x_wdt_release(struct inode *inode, struct file *file)
|
||||
{
|
||||
if (test_bit(WDT_OK_TO_CLOSE, &wdt_status))
|
||||
wdt_disable();
|
||||
orion5x_wdt_disable();
|
||||
else
|
||||
printk(KERN_CRIT "WATCHDOG: Device closed unexpectedly - "
|
||||
"timer will not stop\n");
|
||||
|
|
@ -230,7 +249,7 @@ static int __devinit orion5x_wdt_probe(struct platform_device *pdev)
|
|||
orion5x_wdt_miscdev.parent = &pdev->dev;
|
||||
|
||||
wdt_max_duration = WDT_MAX_CYCLE_COUNT / wdt_tclk;
|
||||
if (heartbeat <= 0 || heartbeat > wdt_max_duration)
|
||||
if (orion5x_wdt_settimeout(heartbeat))
|
||||
heartbeat = wdt_max_duration;
|
||||
|
||||
ret = misc_register(&orion5x_wdt_miscdev);
|
||||
|
|
@ -247,7 +266,7 @@ static int __devexit orion5x_wdt_remove(struct platform_device *pdev)
|
|||
int ret;
|
||||
|
||||
if (test_bit(WDT_IN_USE, &wdt_status)) {
|
||||
wdt_disable();
|
||||
orion5x_wdt_disable();
|
||||
clear_bit(WDT_IN_USE, &wdt_status);
|
||||
}
|
||||
|
||||
|
|
@ -258,9 +277,16 @@ static int __devexit orion5x_wdt_remove(struct platform_device *pdev)
|
|||
return ret;
|
||||
}
|
||||
|
||||
static void orion5x_wdt_shutdown(struct platform_device *pdev)
|
||||
{
|
||||
if (test_bit(WDT_IN_USE, &wdt_status))
|
||||
orion5x_wdt_disable();
|
||||
}
|
||||
|
||||
static struct platform_driver orion5x_wdt_driver = {
|
||||
.probe = orion5x_wdt_probe,
|
||||
.remove = __devexit_p(orion5x_wdt_remove),
|
||||
.shutdown = orion5x_wdt_shutdown,
|
||||
.driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "orion5x_wdt",
|
||||
|
|
@ -285,10 +311,11 @@ MODULE_AUTHOR("Sylver Bruneau <sylver.bruneau@googlemail.com>");
|
|||
MODULE_DESCRIPTION("Orion5x Processor Watchdog");
|
||||
|
||||
module_param(heartbeat, int, 0);
|
||||
MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds");
|
||||
MODULE_PARM_DESC(heartbeat, "Initial watchdog heartbeat in seconds");
|
||||
|
||||
module_param(nowayout, int, 0);
|
||||
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started");
|
||||
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
|
||||
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
|
||||
|
|
|
|||
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