From: Alan Cox Date: Mon, 19 May 2008 13:06:25 +0000 (+0100) Subject: [WATCHDOG 18/57] iTCO: unlocked_ioctl, coding style and cleanup X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0e6fa3fb38e2c89ba9abce9a8b74867f07d20d19;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git [WATCHDOG 18/57] iTCO: unlocked_ioctl, coding style and cleanup Review and switch to unlocked_ioctl Signed-off-by: Alan Cox Signed-off-by: Wim Van Sebroeck --- diff --git a/drivers/watchdog/iTCO_vendor.h b/drivers/watchdog/iTCO_vendor.h new file mode 100644 index 000000000000..9e27e6422f66 --- /dev/null +++ b/drivers/watchdog/iTCO_vendor.h @@ -0,0 +1,15 @@ +/* iTCO Vendor Specific Support hooks */ +#ifdef CONFIG_ITCO_VENDOR_SUPPORT +extern void iTCO_vendor_pre_start(unsigned long, unsigned int); +extern void iTCO_vendor_pre_stop(unsigned long); +extern void iTCO_vendor_pre_keepalive(unsigned long, unsigned int); +extern void iTCO_vendor_pre_set_heartbeat(unsigned int); +extern int iTCO_vendor_check_noreboot_on(void); +#else +#define iTCO_vendor_pre_start(acpibase, heartbeat) {} +#define iTCO_vendor_pre_stop(acpibase) {} +#define iTCO_vendor_pre_keepalive(acpibase, heartbeat) {} +#define iTCO_vendor_pre_set_heartbeat(heartbeat) {} +#define iTCO_vendor_check_noreboot_on() 1 + /* 1=check noreboot; 0=don't check */ +#endif diff --git a/drivers/watchdog/iTCO_vendor_support.c b/drivers/watchdog/iTCO_vendor_support.c index cafc465f2ae3..09e9534ac2e4 100644 --- a/drivers/watchdog/iTCO_vendor_support.c +++ b/drivers/watchdog/iTCO_vendor_support.c @@ -32,7 +32,9 @@ #include /* For __init/__exit/... */ #include /* For io-port access */ -#include /* For inb/outb/... */ +#include /* For inb/outb/... */ + +#include "iTCO_vendor.h" /* iTCO defines */ #define SMI_EN acpibase + 0x30 /* SMI Control and Enable Register */ @@ -40,10 +42,12 @@ #define TCO1_STS TCOBASE + 0x04 /* TCO1 Status Register */ /* List of vendor support modes */ -#define SUPERMICRO_OLD_BOARD 1 /* SuperMicro Pentium 3 Era 370SSE+-OEM1/P3TSSE */ -#define SUPERMICRO_NEW_BOARD 2 /* SuperMicro Pentium 4 / Xeon 4 / EMT64T Era Systems */ +/* SuperMicro Pentium 3 Era 370SSE+-OEM1/P3TSSE */ +#define SUPERMICRO_OLD_BOARD 1 +/* SuperMicro Pentium 4 / Xeon 4 / EMT64T Era Systems */ +#define SUPERMICRO_NEW_BOARD 2 -static int vendorsupport = 0; +static int vendorsupport; module_param(vendorsupport, int, 0); MODULE_PARM_DESC(vendorsupport, "iTCO vendor specific support mode, default=0 (none), 1=SuperMicro Pent3, 2=SuperMicro Pent4+"); @@ -143,34 +147,35 @@ static void supermicro_old_pre_keepalive(unsigned long acpibase) */ /* I/O Port's */ -#define SM_REGINDEX 0x2e /* SuperMicro ICH4+ Register Index */ -#define SM_DATAIO 0x2f /* SuperMicro ICH4+ Register Data I/O */ +#define SM_REGINDEX 0x2e /* SuperMicro ICH4+ Register Index */ +#define SM_DATAIO 0x2f /* SuperMicro ICH4+ Register Data I/O */ /* Control Register's */ -#define SM_CTLPAGESW 0x07 /* SuperMicro ICH4+ Control Page Switch */ -#define SM_CTLPAGE 0x08 /* SuperMicro ICH4+ Control Page Num */ +#define SM_CTLPAGESW 0x07 /* SuperMicro ICH4+ Control Page Switch */ +#define SM_CTLPAGE 0x08 /* SuperMicro ICH4+ Control Page Num */ -#define SM_WATCHENABLE 0x30 /* Watchdog enable: Bit 0: 0=off, 1=on */ +#define SM_WATCHENABLE 0x30 /* Watchdog enable: Bit 0: 0=off, 1=on */ -#define SM_WATCHPAGE 0x87 /* Watchdog unlock control page */ +#define SM_WATCHPAGE 0x87 /* Watchdog unlock control page */ -#define SM_ENDWATCH 0xAA /* Watchdog lock control page */ +#define SM_ENDWATCH 0xAA /* Watchdog lock control page */ -#define SM_COUNTMODE 0xf5 /* Watchdog count mode select */ - /* (Bit 3: 0 = seconds, 1 = minutes */ +#define SM_COUNTMODE 0xf5 /* Watchdog count mode select */ + /* (Bit 3: 0 = seconds, 1 = minutes */ -#define SM_WATCHTIMER 0xf6 /* 8-bits, Watchdog timer counter (RW) */ +#define SM_WATCHTIMER 0xf6 /* 8-bits, Watchdog timer counter (RW) */ -#define SM_RESETCONTROL 0xf7 /* Watchdog reset control */ - /* Bit 6: timer is reset by kbd interrupt */ - /* Bit 7: timer is reset by mouse interrupt */ +#define SM_RESETCONTROL 0xf7 /* Watchdog reset control */ + /* Bit 6: timer is reset by kbd interrupt */ + /* Bit 7: timer is reset by mouse interrupt */ static void supermicro_new_unlock_watchdog(void) { - outb(SM_WATCHPAGE, SM_REGINDEX); /* Write 0x87 to port 0x2e twice */ + /* Write 0x87 to port 0x2e twice */ outb(SM_WATCHPAGE, SM_REGINDEX); - - outb(SM_CTLPAGESW, SM_REGINDEX); /* Switch to watchdog control page */ + outb(SM_WATCHPAGE, SM_REGINDEX); + /* Switch to watchdog control page */ + outb(SM_CTLPAGESW, SM_REGINDEX); outb(SM_CTLPAGE, SM_DATAIO); } @@ -192,7 +197,7 @@ static void supermicro_new_pre_start(unsigned int heartbeat) outb(val, SM_DATAIO); /* Write heartbeat interval to WDOG */ - outb (SM_WATCHTIMER, SM_REGINDEX); + outb(SM_WATCHTIMER, SM_REGINDEX); outb((heartbeat & 255), SM_DATAIO); /* Make sure keyboard/mouse interrupts don't interfere */ @@ -277,7 +282,7 @@ EXPORT_SYMBOL(iTCO_vendor_pre_set_heartbeat); int iTCO_vendor_check_noreboot_on(void) { - switch(vendorsupport) { + switch (vendorsupport) { case SUPERMICRO_OLD_BOARD: return 0; default: @@ -288,13 +293,13 @@ EXPORT_SYMBOL(iTCO_vendor_check_noreboot_on); static int __init iTCO_vendor_init_module(void) { - printk (KERN_INFO PFX "vendor-support=%d\n", vendorsupport); + printk(KERN_INFO PFX "vendor-support=%d\n", vendorsupport); return 0; } static void __exit iTCO_vendor_exit_module(void) { - printk (KERN_INFO PFX "Module Unloaded\n"); + printk(KERN_INFO PFX "Module Unloaded\n"); } module_init(iTCO_vendor_init_module); diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c index 95ba985bd341..c9ca8f691d81 100644 --- a/drivers/watchdog/iTCO_wdt.c +++ b/drivers/watchdog/iTCO_wdt.c @@ -66,7 +66,8 @@ #include /* For standard types (like size_t) */ #include /* For the -ENODEV/... values */ #include /* For printk/panic/... */ -#include /* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */ +#include /* For MODULE_ALIAS_MISCDEV + (WATCHDOG_MINOR) */ #include /* For the watchdog specific items */ #include /* For __init/__exit/... */ #include /* For file operations */ @@ -74,9 +75,10 @@ #include /* For pci functions */ #include /* For io-port access */ #include /* For spin_lock/spin_unlock/... */ +#include /* For copy_to_user/put_user/... */ +#include /* For inb/outb/... */ -#include /* For copy_to_user/put_user/... */ -#include /* For inb/outb/... */ +#include "iTCO_vendor.h" /* TCO related info */ enum iTCO_chipsets { @@ -140,7 +142,7 @@ static struct { {"ICH9DH", 2}, {"ICH9DO", 2}, {"631xESB/632xESB", 2}, - {NULL,0} + {NULL, 0} }; #define ITCO_PCI_DEVICE(dev, data) \ @@ -159,32 +161,32 @@ static struct { * functions that probably will be registered by other drivers. */ static struct pci_device_id iTCO_wdt_pci_tbl[] = { - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AA_0, TCO_ICH )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AB_0, TCO_ICH0 )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_0, TCO_ICH2 )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_10, TCO_ICH2M )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_0, TCO_ICH3 )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_12, TCO_ICH3M )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_0, TCO_ICH4 )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_12, TCO_ICH4M )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801E_0, TCO_CICH )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801EB_0, TCO_ICH5 )}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AA_0, TCO_ICH)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AB_0, TCO_ICH0)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_0, TCO_ICH2)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_10, TCO_ICH2M)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_0, TCO_ICH3)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_12, TCO_ICH3M)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_0, TCO_ICH4)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_12, TCO_ICH4M)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801E_0, TCO_CICH)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801EB_0, TCO_ICH5)}, { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ESB_1, TCO_6300ESB)}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_0, TCO_ICH6 )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_1, TCO_ICH6M )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_2, TCO_ICH6W )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_0, TCO_ICH7 )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_1, TCO_ICH7M )}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_0, TCO_ICH6)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_1, TCO_ICH6M)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_2, TCO_ICH6W)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_0, TCO_ICH7)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_1, TCO_ICH7M)}, { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_31, TCO_ICH7MDH)}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_0, TCO_ICH8 )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_1, TCO_ICH8ME )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_2, TCO_ICH8DH )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_3, TCO_ICH8DO )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_4, TCO_ICH8M )}, - { ITCO_PCI_DEVICE(0x2918, TCO_ICH9 )}, - { ITCO_PCI_DEVICE(0x2916, TCO_ICH9R )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH9_2, TCO_ICH9DH )}, - { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH9_4, TCO_ICH9DO )}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_0, TCO_ICH8)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_1, TCO_ICH8ME)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_2, TCO_ICH8DH)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_3, TCO_ICH8DO)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_4, TCO_ICH8M)}, + { ITCO_PCI_DEVICE(0x2918, TCO_ICH9)}, + { ITCO_PCI_DEVICE(0x2916, TCO_ICH9R)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH9_2, TCO_ICH9DH)}, + { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH9_4, TCO_ICH9DO)}, { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ESB2_0, TCO_631XESB)}, { ITCO_PCI_DEVICE(0x2671, TCO_631XESB)}, { ITCO_PCI_DEVICE(0x2672, TCO_631XESB)}, @@ -203,13 +205,15 @@ static struct pci_device_id iTCO_wdt_pci_tbl[] = { { ITCO_PCI_DEVICE(0x267f, TCO_631XESB)}, { 0, }, /* End of list */ }; -MODULE_DEVICE_TABLE (pci, iTCO_wdt_pci_tbl); +MODULE_DEVICE_TABLE(pci, iTCO_wdt_pci_tbl); /* Address definitions for the TCO */ -#define TCOBASE iTCO_wdt_private.ACPIBASE + 0x60 /* TCO base address */ -#define SMI_EN iTCO_wdt_private.ACPIBASE + 0x30 /* SMI Control and Enable Register */ +/* TCO base address */ +#define TCOBASE iTCO_wdt_private.ACPIBASE + 0x60 +/* SMI Control and Enable Register */ +#define SMI_EN iTCO_wdt_private.ACPIBASE + 0x30 -#define TCO_RLD TCOBASE + 0x00 /* TCO Timer Reload and Current Value */ +#define TCO_RLD TCOBASE + 0x00 /* TCO Timer Reload and Curr. Value */ #define TCOv1_TMR TCOBASE + 0x01 /* TCOv1 Timer Initial Value */ #define TCO_DAT_IN TCOBASE + 0x02 /* TCO Data In Register */ #define TCO_DAT_OUT TCOBASE + 0x03 /* TCO Data Out Register */ @@ -222,15 +226,21 @@ MODULE_DEVICE_TABLE (pci, iTCO_wdt_pci_tbl); /* internal variables */ static unsigned long is_active; static char expect_release; -static struct { /* this is private data for the iTCO_wdt device */ - unsigned int iTCO_version; /* TCO version/generation */ - unsigned long ACPIBASE; /* The cards ACPIBASE address (TCOBASE = ACPIBASE+0x60) */ - unsigned long __iomem *gcs; /* NO_REBOOT flag is Memory-Mapped GCS register bit 5 (TCO version 2) */ - spinlock_t io_lock; /* the lock for io operations */ - struct pci_dev *pdev; /* the PCI-device */ +static struct { /* this is private data for the iTCO_wdt device */ + /* TCO version/generation */ + unsigned int iTCO_version; + /* The cards ACPIBASE address (TCOBASE = ACPIBASE+0x60) */ + unsigned long ACPIBASE; + /* 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; + /* the PCI-device */ + struct pci_dev *pdev; } iTCO_wdt_private; -static struct platform_device *iTCO_wdt_platform_device; /* the watchdog platform device */ +/* the watchdog platform device */ +static struct platform_device *iTCO_wdt_platform_device; /* module parameters */ #define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat */ @@ -240,22 +250,9 @@ MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2driver_data].iTCO_version; + 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). */ + /* 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); RCBA = base_address & 0xffffc000; - iTCO_wdt_private.gcs = ioremap((RCBA + 0x3410),4); + iTCO_wdt_private.gcs = ioremap((RCBA + 0x3410), 4); } /* Check chipset's NO_REBOOT bit */ @@ -657,8 +646,8 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev, const struct pci_device /* Set the TCO_EN bit in SMI_EN register */ if (!request_region(SMI_EN, 4, "iTCO_wdt")) { - printk(KERN_ERR PFX "I/O address 0x%04lx already in use\n", - SMI_EN ); + printk(KERN_ERR PFX + "I/O address 0x%04lx already in use\n", SMI_EN); ret = -EIO; goto out; } @@ -667,18 +656,20 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev, const struct pci_device outl(val32, SMI_EN); release_region(SMI_EN, 4); - /* The TCO I/O registers reside in a 32-byte range pointed to by the TCOBASE value */ - if (!request_region (TCOBASE, 0x20, "iTCO_wdt")) { - printk (KERN_ERR PFX "I/O address 0x%04lx already in use\n", + /* The TCO I/O registers reside in a 32-byte range pointed to + by the TCOBASE value */ + if (!request_region(TCOBASE, 0x20, "iTCO_wdt")) { + printk(KERN_ERR PFX "I/O address 0x%04lx already in use\n", TCOBASE); ret = -EIO; goto out; } - printk(KERN_INFO PFX "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); + printk(KERN_INFO PFX + "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); /* Clear out the (probably old) status */ outb(0, TCO1_STS); @@ -687,27 +678,29 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev, const struct pci_device /* Make sure the watchdog is not running */ iTCO_wdt_stop(); - /* Check that the heartbeat value is within it's range ; if not reset to the default */ + /* 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); - printk(KERN_INFO PFX "heartbeat value must be 2