diff options
Diffstat (limited to 'drivers/watchdog/iTCO_wdt.c')
| -rw-r--r-- | drivers/watchdog/iTCO_wdt.c | 533 |
1 files changed, 113 insertions, 420 deletions
diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c index 9fecb95645a..bc47e9012f3 100644 --- a/drivers/watchdog/iTCO_wdt.c +++ b/drivers/watchdog/iTCO_wdt.c @@ -66,316 +66,16 @@ #include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */ #include <linux/uaccess.h> /* For copy_to_user/put_user/... */ #include <linux/io.h> /* For inb/outb/... */ +#include <linux/mfd/core.h> +#include <linux/mfd/lpc_ich.h> #include "iTCO_vendor.h" -/* TCO related info */ -enum iTCO_chipsets { - TCO_ICH = 0, /* ICH */ - TCO_ICH0, /* ICH0 */ - TCO_ICH2, /* ICH2 */ - TCO_ICH2M, /* ICH2-M */ - TCO_ICH3, /* ICH3-S */ - TCO_ICH3M, /* ICH3-M */ - TCO_ICH4, /* ICH4 */ - TCO_ICH4M, /* ICH4-M */ - TCO_CICH, /* C-ICH */ - TCO_ICH5, /* ICH5 & ICH5R */ - TCO_6300ESB, /* 6300ESB */ - TCO_ICH6, /* ICH6 & ICH6R */ - TCO_ICH6M, /* ICH6-M */ - TCO_ICH6W, /* ICH6W & ICH6RW */ - TCO_631XESB, /* 631xESB/632xESB */ - TCO_ICH7, /* ICH7 & ICH7R */ - TCO_ICH7DH, /* ICH7DH */ - TCO_ICH7M, /* ICH7-M & ICH7-U */ - TCO_ICH7MDH, /* ICH7-M DH */ - TCO_NM10, /* NM10 */ - TCO_ICH8, /* ICH8 & ICH8R */ - TCO_ICH8DH, /* ICH8DH */ - TCO_ICH8DO, /* ICH8DO */ - TCO_ICH8M, /* ICH8M */ - TCO_ICH8ME, /* ICH8M-E */ - TCO_ICH9, /* ICH9 */ - TCO_ICH9R, /* ICH9R */ - TCO_ICH9DH, /* ICH9DH */ - TCO_ICH9DO, /* ICH9DO */ - TCO_ICH9M, /* ICH9M */ - TCO_ICH9ME, /* ICH9M-E */ - TCO_ICH10, /* ICH10 */ - TCO_ICH10R, /* ICH10R */ - TCO_ICH10D, /* ICH10D */ - TCO_ICH10DO, /* ICH10DO */ - TCO_PCH, /* PCH Desktop Full Featured */ - TCO_PCHM, /* PCH Mobile Full Featured */ - TCO_P55, /* P55 */ - TCO_PM55, /* PM55 */ - TCO_H55, /* H55 */ - TCO_QM57, /* QM57 */ - TCO_H57, /* H57 */ - TCO_HM55, /* HM55 */ - TCO_Q57, /* Q57 */ - TCO_HM57, /* HM57 */ - TCO_PCHMSFF, /* PCH Mobile SFF Full Featured */ - TCO_QS57, /* QS57 */ - TCO_3400, /* 3400 */ - TCO_3420, /* 3420 */ - TCO_3450, /* 3450 */ - TCO_EP80579, /* EP80579 */ - TCO_CPT, /* Cougar Point */ - TCO_CPTD, /* Cougar Point Desktop */ - TCO_CPTM, /* Cougar Point Mobile */ - TCO_PBG, /* Patsburg */ - TCO_DH89XXCC, /* DH89xxCC */ - TCO_PPT, /* Panther Point */ - TCO_LPT, /* Lynx Point */ -}; - -static struct { - char *name; - unsigned int iTCO_version; -} iTCO_chipset_info[] __devinitdata = { - {"ICH", 1}, - {"ICH0", 1}, - {"ICH2", 1}, - {"ICH2-M", 1}, - {"ICH3-S", 1}, - {"ICH3-M", 1}, - {"ICH4", 1}, - {"ICH4-M", 1}, - {"C-ICH", 1}, - {"ICH5 or ICH5R", 1}, - {"6300ESB", 1}, - {"ICH6 or ICH6R", 2}, - {"ICH6-M", 2}, - {"ICH6W or ICH6RW", 2}, - {"631xESB/632xESB", 2}, - {"ICH7 or ICH7R", 2}, - {"ICH7DH", 2}, - {"ICH7-M or ICH7-U", 2}, - {"ICH7-M DH", 2}, - {"NM10", 2}, - {"ICH8 or ICH8R", 2}, - {"ICH8DH", 2}, - {"ICH8DO", 2}, - {"ICH8M", 2}, - {"ICH8M-E", 2}, - {"ICH9", 2}, - {"ICH9R", 2}, - {"ICH9DH", 2}, - {"ICH9DO", 2}, - {"ICH9M", 2}, - {"ICH9M-E", 2}, - {"ICH10", 2}, - {"ICH10R", 2}, - {"ICH10D", 2}, - {"ICH10DO", 2}, - {"PCH Desktop Full Featured", 2}, - {"PCH Mobile Full Featured", 2}, - {"P55", 2}, - {"PM55", 2}, - {"H55", 2}, - {"QM57", 2}, - {"H57", 2}, - {"HM55", 2}, - {"Q57", 2}, - {"HM57", 2}, - {"PCH Mobile SFF Full Featured", 2}, - {"QS57", 2}, - {"3400", 2}, - {"3420", 2}, - {"3450", 2}, - {"EP80579", 2}, - {"Cougar Point", 2}, - {"Cougar Point Desktop", 2}, - {"Cougar Point Mobile", 2}, - {"Patsburg", 2}, - {"DH89xxCC", 2}, - {"Panther Point", 2}, - {"Lynx Point", 2}, - {NULL, 0} -}; - -/* - * This data only exists for exporting the supported PCI ids - * via MODULE_DEVICE_TABLE. We do not actually register a - * pci_driver, because the I/O Controller Hub has also other - * functions that probably will be registered by other drivers. - */ -static DEFINE_PCI_DEVICE_TABLE(iTCO_wdt_pci_tbl) = { - { PCI_VDEVICE(INTEL, 0x2410), TCO_ICH}, - { PCI_VDEVICE(INTEL, 0x2420), TCO_ICH0}, - { PCI_VDEVICE(INTEL, 0x2440), TCO_ICH2}, - { PCI_VDEVICE(INTEL, 0x244c), TCO_ICH2M}, - { PCI_VDEVICE(INTEL, 0x2480), TCO_ICH3}, - { PCI_VDEVICE(INTEL, 0x248c), TCO_ICH3M}, - { PCI_VDEVICE(INTEL, 0x24c0), TCO_ICH4}, - { PCI_VDEVICE(INTEL, 0x24cc), TCO_ICH4M}, - { PCI_VDEVICE(INTEL, 0x2450), TCO_CICH}, - { PCI_VDEVICE(INTEL, 0x24d0), TCO_ICH5}, - { PCI_VDEVICE(INTEL, 0x25a1), TCO_6300ESB}, - { PCI_VDEVICE(INTEL, 0x2640), TCO_ICH6}, - { PCI_VDEVICE(INTEL, 0x2641), TCO_ICH6M}, - { PCI_VDEVICE(INTEL, 0x2642), TCO_ICH6W}, - { PCI_VDEVICE(INTEL, 0x2670), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x2671), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x2672), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x2673), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x2674), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x2675), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x2676), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x2677), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x2678), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x2679), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x267a), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x267b), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x267c), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x267d), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x267e), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x267f), TCO_631XESB}, - { PCI_VDEVICE(INTEL, 0x27b8), TCO_ICH7}, - { PCI_VDEVICE(INTEL, 0x27b0), TCO_ICH7DH}, - { PCI_VDEVICE(INTEL, 0x27b9), TCO_ICH7M}, - { PCI_VDEVICE(INTEL, 0x27bd), TCO_ICH7MDH}, - { PCI_VDEVICE(INTEL, 0x27bc), TCO_NM10}, - { PCI_VDEVICE(INTEL, 0x2810), TCO_ICH8}, - { PCI_VDEVICE(INTEL, 0x2812), TCO_ICH8DH}, - { PCI_VDEVICE(INTEL, 0x2814), TCO_ICH8DO}, - { PCI_VDEVICE(INTEL, 0x2815), TCO_ICH8M}, - { PCI_VDEVICE(INTEL, 0x2811), TCO_ICH8ME}, - { PCI_VDEVICE(INTEL, 0x2918), TCO_ICH9}, - { PCI_VDEVICE(INTEL, 0x2916), TCO_ICH9R}, - { PCI_VDEVICE(INTEL, 0x2912), TCO_ICH9DH}, - { PCI_VDEVICE(INTEL, 0x2914), TCO_ICH9DO}, - { PCI_VDEVICE(INTEL, 0x2919), TCO_ICH9M}, - { PCI_VDEVICE(INTEL, 0x2917), TCO_ICH9ME}, - { PCI_VDEVICE(INTEL, 0x3a18), TCO_ICH10}, - { PCI_VDEVICE(INTEL, 0x3a16), TCO_ICH10R}, - { PCI_VDEVICE(INTEL, 0x3a1a), TCO_ICH10D}, - { PCI_VDEVICE(INTEL, 0x3a14), TCO_ICH10DO}, - { PCI_VDEVICE(INTEL, 0x3b00), TCO_PCH}, - { PCI_VDEVICE(INTEL, 0x3b01), TCO_PCHM}, - { PCI_VDEVICE(INTEL, 0x3b02), TCO_P55}, - { PCI_VDEVICE(INTEL, 0x3b03), TCO_PM55}, - { PCI_VDEVICE(INTEL, 0x3b06), TCO_H55}, - { PCI_VDEVICE(INTEL, 0x3b07), TCO_QM57}, - { PCI_VDEVICE(INTEL, 0x3b08), TCO_H57}, - { PCI_VDEVICE(INTEL, 0x3b09), TCO_HM55}, - { PCI_VDEVICE(INTEL, 0x3b0a), TCO_Q57}, - { PCI_VDEVICE(INTEL, 0x3b0b), TCO_HM57}, - { PCI_VDEVICE(INTEL, 0x3b0d), TCO_PCHMSFF}, - { PCI_VDEVICE(INTEL, 0x3b0f), TCO_QS57}, - { PCI_VDEVICE(INTEL, 0x3b12), TCO_3400}, - { PCI_VDEVICE(INTEL, 0x3b14), TCO_3420}, - { PCI_VDEVICE(INTEL, 0x3b16), TCO_3450}, - { PCI_VDEVICE(INTEL, 0x5031), TCO_EP80579}, - { PCI_VDEVICE(INTEL, 0x1c41), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c42), TCO_CPTD}, - { PCI_VDEVICE(INTEL, 0x1c43), TCO_CPTM}, - { PCI_VDEVICE(INTEL, 0x1c44), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c45), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c46), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c47), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c48), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c49), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c4a), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c4b), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c4c), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c4d), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c4e), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c4f), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c50), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c51), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c52), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c53), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c54), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c55), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c56), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c57), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c58), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c59), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c5a), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c5b), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c5c), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c5d), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c5e), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1c5f), TCO_CPT}, - { PCI_VDEVICE(INTEL, 0x1d40), TCO_PBG}, - { PCI_VDEVICE(INTEL, 0x1d41), TCO_PBG}, - { PCI_VDEVICE(INTEL, 0x2310), TCO_DH89XXCC}, - { PCI_VDEVICE(INTEL, 0x1e40), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e41), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e42), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e43), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e44), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e45), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e46), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e47), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e48), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e49), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e4a), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e4b), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e4c), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e4d), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e4e), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e4f), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e50), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e51), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e52), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e53), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e54), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e55), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e56), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e57), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e58), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e59), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e5a), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e5b), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e5c), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e5d), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e5e), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x1e5f), TCO_PPT}, - { PCI_VDEVICE(INTEL, 0x8c40), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c41), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c42), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c43), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c44), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c45), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c46), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c47), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c48), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c49), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c4a), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c4b), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c4c), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c4d), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c4e), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c4f), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c50), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c51), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c52), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c53), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c54), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c55), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c56), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c57), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c58), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c59), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c5a), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c5b), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c5c), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c5d), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c5e), TCO_LPT}, - { PCI_VDEVICE(INTEL, 0x8c5f), TCO_LPT}, - { 0, }, /* End of list */ -}; -MODULE_DEVICE_TABLE(pci, iTCO_wdt_pci_tbl); - /* Address definitions for the TCO */ /* TCO base address */ -#define TCOBASE (iTCO_wdt_private.ACPIBASE + 0x60) +#define TCOBASE (iTCO_wdt_private.tco_res->start) /* SMI Control and Enable Register */ -#define SMI_EN (iTCO_wdt_private.ACPIBASE + 0x30) +#define SMI_EN (iTCO_wdt_private.smi_res->start) #define TCO_RLD (TCOBASE + 0x00) /* TCO Timer Reload and Curr. Value */ #define TCOv1_TMR (TCOBASE + 0x01) /* TCOv1 Timer Initial Value */ @@ -393,19 +93,18 @@ static char expect_release; static struct { /* this is private data for the iTCO_wdt device */ /* TCO version/generation */ unsigned int iTCO_version; - /* The device's ACPIBASE address (TCOBASE = ACPIBASE+0x60) */ - unsigned long ACPIBASE; + struct resource *tco_res; + struct resource *smi_res; + struct resource *gcs_res; /* NO_REBOOT flag is Memory-Mapped GCS register bit 5 (TCO version 2)*/ unsigned long __iomem *gcs; /* the lock for io operations */ spinlock_t io_lock; + struct platform_device *dev; /* the PCI-device */ struct pci_dev *pdev; } iTCO_wdt_private; -/* the watchdog platform device */ -static struct platform_device *iTCO_wdt_platform_device; - /* module parameters */ #define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat */ static int heartbeat = WATCHDOG_HEARTBEAT; /* in seconds */ @@ -485,7 +184,7 @@ static int iTCO_wdt_start(void) spin_lock(&iTCO_wdt_private.io_lock); - iTCO_vendor_pre_start(iTCO_wdt_private.ACPIBASE, heartbeat); + iTCO_vendor_pre_start(iTCO_wdt_private.smi_res, heartbeat); /* disable chipset's NO_REBOOT bit */ if (iTCO_wdt_unset_NO_REBOOT_bit()) { @@ -519,7 +218,7 @@ static int iTCO_wdt_stop(void) spin_lock(&iTCO_wdt_private.io_lock); - iTCO_vendor_pre_stop(iTCO_wdt_private.ACPIBASE); + iTCO_vendor_pre_stop(iTCO_wdt_private.smi_res); /* Bit 11: TCO Timer Halt -> 1 = The TCO timer is disabled */ val = inw(TCO1_CNT); @@ -541,7 +240,7 @@ static int iTCO_wdt_keepalive(void) { spin_lock(&iTCO_wdt_private.io_lock); - iTCO_vendor_pre_keepalive(iTCO_wdt_private.ACPIBASE, heartbeat); + iTCO_vendor_pre_keepalive(iTCO_wdt_private.smi_res, heartbeat); /* Reload the timer by writing to the TCO Timer Counter register */ if (iTCO_wdt_private.iTCO_version == 2) @@ -786,83 +485,120 @@ static struct miscdevice iTCO_wdt_miscdev = { * Init & exit routines */ -static int __devinit iTCO_wdt_init(struct pci_dev *pdev, - const struct pci_device_id *ent, struct platform_device *dev) +static void __devexit iTCO_wdt_cleanup(void) +{ + /* Stop the timer before we leave */ + if (!nowayout) + iTCO_wdt_stop(); + + /* Deregister */ + misc_deregister(&iTCO_wdt_miscdev); + + /* release resources */ + release_region(iTCO_wdt_private.tco_res->start, + resource_size(iTCO_wdt_private.tco_res)); + release_region(iTCO_wdt_private.smi_res->start, + resource_size(iTCO_wdt_private.smi_res)); + if (iTCO_wdt_private.iTCO_version == 2) { + iounmap(iTCO_wdt_private.gcs); + release_mem_region(iTCO_wdt_private.gcs_res->start, + resource_size(iTCO_wdt_private.gcs_res)); + } + + iTCO_wdt_private.tco_res = NULL; + iTCO_wdt_private.smi_res = NULL; + iTCO_wdt_private.gcs_res = NULL; + iTCO_wdt_private.gcs = NULL; +} + +static int __devinit iTCO_wdt_probe(struct platform_device *dev) { - int ret; - u32 base_address; - unsigned long RCBA; + int ret = -ENODEV; unsigned long val32; + struct lpc_ich_info *ich_info = dev->dev.platform_data; + + if (!ich_info) + goto out; + + spin_lock_init(&iTCO_wdt_private.io_lock); + + iTCO_wdt_private.tco_res = + platform_get_resource(dev, IORESOURCE_IO, ICH_RES_IO_TCO); + if (!iTCO_wdt_private.tco_res) + goto out; + + iTCO_wdt_private.smi_res = + platform_get_resource(dev, IORESOURCE_IO, ICH_RES_IO_SMI); + if (!iTCO_wdt_private.smi_res) + goto out; + + iTCO_wdt_private.iTCO_version = ich_info->iTCO_version; + iTCO_wdt_private.dev = dev; + iTCO_wdt_private.pdev = to_pci_dev(dev->dev.parent); /* - * 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 + * Get the Memory-Mapped GCS register, we need it for the + * NO_REBOOT flag (TCO v2). */ - 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; - - /* Get the Memory-Mapped GCS register, we need it for the - NO_REBOOT flag (TCO v2). To get access to it you have to - read RCBA from PCI Config space 0xf0 and use it as base. - GCS = RCBA + ICH6_GCS(0x3410). */ if (iTCO_wdt_private.iTCO_version == 2) { - pci_read_config_dword(pdev, 0xf0, &base_address); - if ((base_address & 1) == 0) { - pr_err("RCBA is disabled by hardware/BIOS, device disabled\n"); - ret = -ENODEV; + iTCO_wdt_private.gcs_res = platform_get_resource(dev, + IORESOURCE_MEM, + ICH_RES_MEM_GCS); + + if (!iTCO_wdt_private.gcs_res) + goto out; + + if (!request_mem_region(iTCO_wdt_private.gcs_res->start, + resource_size(iTCO_wdt_private.gcs_res), dev->name)) { + ret = -EBUSY; goto out; } - RCBA = base_address & 0xffffc000; - iTCO_wdt_private.gcs = ioremap((RCBA + 0x3410), 4); + iTCO_wdt_private.gcs = ioremap(iTCO_wdt_private.gcs_res->start, + resource_size(iTCO_wdt_private.gcs_res)); + if (!iTCO_wdt_private.gcs) { + ret = -EIO; + goto unreg_gcs; + } } /* Check chipset's NO_REBOOT bit */ if (iTCO_wdt_unset_NO_REBOOT_bit() && iTCO_vendor_check_noreboot_on()) { pr_info("unable to reset NO_REBOOT flag, device disabled by hardware/BIOS\n"); ret = -ENODEV; /* Cannot reset NO_REBOOT bit */ - goto out_unmap; + goto unmap_gcs; } /* Set the NO_REBOOT bit to prevent later reboots, just for sure */ iTCO_wdt_set_NO_REBOOT_bit(); /* 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_unmap; + if (!request_region(iTCO_wdt_private.smi_res->start, + resource_size(iTCO_wdt_private.smi_res), dev->name)) { + pr_err("I/O address 0x%04llx already in use, device disabled\n", + (u64)SMI_EN); + ret = -EBUSY; + goto unmap_gcs; } if (turn_SMI_watchdog_clear_off >= iTCO_wdt_private.iTCO_version) { - /* Bit 13: TCO_EN -> 0 = Disables TCO logic generating an SMI# */ + /* + * Bit 13: TCO_EN -> 0 + * Disables TCO logic generating an SMI# + */ val32 = inl(SMI_EN); val32 &= 0xffffdfff; /* Turn off SMI clearing watchdog */ 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; + if (!request_region(iTCO_wdt_private.tco_res->start, + resource_size(iTCO_wdt_private.tco_res), dev->name)) { + pr_err("I/O address 0x%04llx already in use, device disabled\n", + (u64)TCOBASE); + ret = -EBUSY; + goto unreg_smi; } - 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); + pr_info("Found a %s TCO device (Version=%d, TCOBASE=0x%04llx)\n", + ich_info->name, ich_info->iTCO_version, (u64)TCOBASE); /* Clear out the (probably old) status */ outw(0x0008, TCO1_STS); /* Clear the Time Out Status bit */ @@ -883,7 +619,7 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev, if (ret != 0) { pr_err("cannot register miscdev on minor=%d (err=%d)\n", WATCHDOG_MINOR, ret); - goto unreg_region; + goto unreg_tco; } pr_info("initialized. heartbeat=%d sec (nowayout=%d)\n", @@ -891,62 +627,31 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev, return 0; -unreg_region: - release_region(TCOBASE, 0x20); -unreg_smi_en: - release_region(SMI_EN, 4); -out_unmap: +unreg_tco: + release_region(iTCO_wdt_private.tco_res->start, + resource_size(iTCO_wdt_private.tco_res)); +unreg_smi: + release_region(iTCO_wdt_private.smi_res->start, + resource_size(iTCO_wdt_private.smi_res)); +unmap_gcs: if (iTCO_wdt_private.iTCO_version == 2) iounmap(iTCO_wdt_private.gcs); -out: - iTCO_wdt_private.ACPIBASE = 0; - return ret; -} - -static void __devexit iTCO_wdt_cleanup(void) -{ - /* Stop the timer before we leave */ - if (!nowayout) - iTCO_wdt_stop(); - - /* Deregister */ - misc_deregister(&iTCO_wdt_miscdev); - release_region(TCOBASE, 0x20); - release_region(SMI_EN, 4); +unreg_gcs: if (iTCO_wdt_private.iTCO_version == 2) - iounmap(iTCO_wdt_private.gcs); - pci_dev_put(iTCO_wdt_private.pdev); - iTCO_wdt_private.ACPIBASE = 0; -} - -static int __devinit iTCO_wdt_probe(struct platform_device *dev) -{ - int ret = -ENODEV; - int found = 0; - struct pci_dev *pdev = NULL; - const struct pci_device_id *ent; - - spin_lock_init(&iTCO_wdt_private.io_lock); - - for_each_pci_dev(pdev) { - ent = pci_match_id(iTCO_wdt_pci_tbl, pdev); - if (ent) { - found++; - ret = iTCO_wdt_init(pdev, ent, dev); - if (!ret) - break; - } - } - - if (!found) - pr_info("No device detected\n"); + release_mem_region(iTCO_wdt_private.gcs_res->start, + resource_size(iTCO_wdt_private.gcs_res)); +out: + iTCO_wdt_private.tco_res = NULL; + iTCO_wdt_private.smi_res = NULL; + iTCO_wdt_private.gcs_res = NULL; + iTCO_wdt_private.gcs = NULL; return ret; } static int __devexit iTCO_wdt_remove(struct platform_device *dev) { - if (iTCO_wdt_private.ACPIBASE) + if (iTCO_wdt_private.tco_res || iTCO_wdt_private.smi_res) iTCO_wdt_cleanup(); return 0; @@ -977,23 +682,11 @@ static int __init iTCO_wdt_init_module(void) if (err) return err; - iTCO_wdt_platform_device = platform_device_register_simple(DRV_NAME, - -1, NULL, 0); - if (IS_ERR(iTCO_wdt_platform_device)) { - err = PTR_ERR(iTCO_wdt_platform_device); - goto unreg_platform_driver; - } - return 0; - -unreg_platform_driver: - platform_driver_unregister(&iTCO_wdt_driver); - return err; } static void __exit iTCO_wdt_cleanup_module(void) { - platform_device_unregister(iTCO_wdt_platform_device); platform_driver_unregister(&iTCO_wdt_driver); pr_info("Watchdog Module Unloaded\n"); } |