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Commit a9deecba authored by Linus Torvalds's avatar Linus Torvalds
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Merge master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog 

* master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  [WATCHDOG] MTX-1 Watchdog driver
  [WATCHDOG] s3c2410_wdt - initialize watchdog irq resource  
  [WATCHDOG] Kconfig menuconfig patch
  [WATCHDOG] pcwd.c: Port to the new device driver model
  [WATCHDOG] use mutex instead of semaphore in Berkshire USB-PC Watchdog driver
  [WATCHDOG] the scheduled removal of the i8xx_tco watchdog driver
  [WATCHDOG] Semi-typical watchdog bug re early misc_register()
  [WATCHDOG] add support for the w83627thf chipset.
parents d9de2622 04bf3b4f
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Documentation/feature-removal-schedule.txt
View file @ a9deecba
......@@ -278,14 +278,6 @@ Who: Richard Purdie <rpurdie@rpsys.net>
---------------------------
What: i8xx_tco watchdog driver
When: in 2.6.22
Why: the i8xx_tco watchdog driver has been replaced by the iTCO_wdt
watchdog driver.
Who: Wim Van Sebroeck <wim@iguana.be>
---------------------------
What: Multipath cached routing support in ipv4
When: in 2.6.23
Why: Code was merged, then submitter immediately disappeared leaving
......
MAINTAINERS
View file @ a9deecba
......@@ -1718,12 +1718,6 @@ P: H. Peter Anvin
M: hpa@zytor.com
S: Maintained
i810 TCO TIMER WATCHDOG
P: Nils Faerber
M: nils@kernelconcepts.de
W: http://www.kernelconcepts.de/
S: Maintained
IA64 (Itanium) PLATFORM
P: Tony Luck
M: tony.luck@intel.com
......
drivers/char/watchdog/Kconfig
View file @ a9deecba
......@@ -2,9 +2,7 @@
# Watchdog device configuration
#
menu "Watchdog Cards"
config WATCHDOG
menuconfig WATCHDOG
bool "Watchdog Timer Support"
---help---
If you say Y here (and to one of the following options) and create a
......@@ -28,9 +26,10 @@ config WATCHDOG
If unsure, say N.
if WATCHDOG
config WATCHDOG_NOWAYOUT
bool "Disable watchdog shutdown on close"
depends on WATCHDOG
help
The default watchdog behaviour (which you get if you say N here) is
to stop the timer if the process managing it closes the file
......@@ -43,13 +42,11 @@ config WATCHDOG_NOWAYOUT
#
comment "Watchdog Device Drivers"
depends on WATCHDOG
# Architecture Independent
config SOFT_WATCHDOG
tristate "Software watchdog"
depends on WATCHDOG
help
A software monitoring watchdog. This will fail to reboot your system
from some situations that the hardware watchdog will recover
......@@ -62,14 +59,14 @@ config SOFT_WATCHDOG
config AT91RM9200_WATCHDOG
tristate "AT91RM9200 watchdog"
depends on WATCHDOG && ARCH_AT91RM9200
depends on ARCH_AT91RM9200
help
Watchdog timer embedded into AT91RM9200 chips. This will reboot your
system when the timeout is reached.
config 21285_WATCHDOG
tristate "DC21285 watchdog"
depends on WATCHDOG && FOOTBRIDGE
depends on FOOTBRIDGE
help
The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
here if you wish to use this. Alternatively say M to compile the
......@@ -83,7 +80,7 @@ config 21285_WATCHDOG
config 977_WATCHDOG
tristate "NetWinder WB83C977 watchdog"
depends on WATCHDOG && FOOTBRIDGE && ARCH_NETWINDER
depends on FOOTBRIDGE && ARCH_NETWINDER
help
Say Y here to include support for the WB977 watchdog included in
NetWinder machines. Alternatively say M to compile the driver as
......@@ -93,7 +90,7 @@ config 977_WATCHDOG
config IXP2000_WATCHDOG
tristate "IXP2000 Watchdog"
depends on WATCHDOG && ARCH_IXP2000
depends on ARCH_IXP2000
help
Say Y here if to include support for the watchdog timer
in the Intel IXP2000(2400, 2800, 2850) network processors.
......@@ -104,7 +101,7 @@ config IXP2000_WATCHDOG
config IXP4XX_WATCHDOG
tristate "IXP4xx Watchdog"
depends on WATCHDOG && ARCH_IXP4XX
depends on ARCH_IXP4XX
help
Say Y here if to include support for the watchdog timer
in the Intel IXP4xx network processors. This driver can
......@@ -120,7 +117,7 @@ config IXP4XX_WATCHDOG
config S3C2410_WATCHDOG
tristate "S3C2410 Watchdog"
depends on WATCHDOG && ARCH_S3C2410
depends on ARCH_S3C2410
help
Watchdog timer block in the Samsung S3C2410 chips. This will
reboot the system when the timer expires with the watchdog
......@@ -136,7 +133,7 @@ config S3C2410_WATCHDOG
config SA1100_WATCHDOG
tristate "SA1100/PXA2xx watchdog"
depends on WATCHDOG && ( ARCH_SA1100 || ARCH_PXA )
depends on ARCH_SA1100 || ARCH_PXA
help
Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
reboot your system when timeout is reached.
......@@ -148,7 +145,7 @@ config SA1100_WATCHDOG
config MPCORE_WATCHDOG
tristate "MPcore watchdog"
depends on WATCHDOG && ARM_MPCORE_PLATFORM && LOCAL_TIMERS
depends on ARM_MPCORE_PLATFORM && LOCAL_TIMERS
help
Watchdog timer embedded into the MPcore system.
......@@ -157,7 +154,7 @@ config MPCORE_WATCHDOG
config EP93XX_WATCHDOG
tristate "EP93xx Watchdog"
depends on WATCHDOG && ARCH_EP93XX
depends on ARCH_EP93XX
help
Say Y here if to include support for the watchdog timer
embedded in the Cirrus Logic EP93xx family of devices.
......@@ -167,14 +164,14 @@ config EP93XX_WATCHDOG
config OMAP_WATCHDOG
tristate "OMAP Watchdog"
depends on WATCHDOG && (ARCH_OMAP16XX || ARCH_OMAP24XX)
depends on ARCH_OMAP16XX || ARCH_OMAP24XX
help
Support for TI OMAP1610/OMAP1710/OMAP2420 watchdog. Say 'Y' here to
enable the OMAP1610/OMAP1710 watchdog timer.
config PNX4008_WATCHDOG
tristate "PNX4008 Watchdog"
depends on WATCHDOG && ARCH_PNX4008
depends on ARCH_PNX4008
help
Say Y here if to include support for the watchdog timer
in the PNX4008 processor.
......@@ -187,7 +184,7 @@ config PNX4008_WATCHDOG
config ACQUIRE_WDT
tristate "Acquire SBC Watchdog Timer"
depends on WATCHDOG && X86
depends on X86
---help---
This is the driver for the hardware watchdog on Single Board
Computers produced by Acquire Inc (and others). This watchdog
......@@ -201,7 +198,7 @@ config ACQUIRE_WDT
config ADVANTECH_WDT
tristate "Advantech SBC Watchdog Timer"
depends on WATCHDOG && X86
depends on X86
help
If you are configuring a Linux kernel for the Advantech single-board
computer, say `Y' here to support its built-in watchdog timer
......@@ -210,7 +207,7 @@ config ADVANTECH_WDT
config ALIM1535_WDT
tristate "ALi M1535 PMU Watchdog Timer"
depends on WATCHDOG && X86 && PCI
depends on X86 && PCI
---help---
This is the driver for the hardware watchdog on the ALi M1535 PMU.
......@@ -221,7 +218,7 @@ config ALIM1535_WDT
config ALIM7101_WDT
tristate "ALi M7101 PMU Computer Watchdog"
depends on WATCHDOG && X86 && PCI
depends on X86 && PCI
help
This is the driver for the hardware watchdog on the ALi M7101 PMU
as used in the x86 Cobalt servers.
......@@ -233,7 +230,7 @@ config ALIM7101_WDT
config SC520_WDT
tristate "AMD Elan SC520 processor Watchdog"
depends on WATCHDOG && X86
depends on X86
help
This is the driver for the hardware watchdog built in to the
AMD "Elan" SC520 microcomputer commonly used in embedded systems.
......@@ -246,7 +243,7 @@ config SC520_WDT
config EUROTECH_WDT
tristate "Eurotech CPU-1220/1410 Watchdog Timer"
depends on WATCHDOG && X86
depends on X86
help
Enable support for the watchdog timer on the Eurotech CPU-1220 and
CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
......@@ -254,7 +251,7 @@ config EUROTECH_WDT
config IB700_WDT
tristate "IB700 SBC Watchdog Timer"
depends on WATCHDOG && X86
depends on X86
---help---
This is the driver for the hardware watchdog on the IB700 Single
Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
......@@ -270,7 +267,7 @@ config IB700_WDT
config IBMASR
tristate "IBM Automatic Server Restart"
depends on WATCHDOG && X86
depends on X86
help
This is the driver for the IBM Automatic Server Restart watchdog
timer built-in into some eServer xSeries machines.
......@@ -280,7 +277,7 @@ config IBMASR
config WAFER_WDT
tristate "ICP Wafer 5823 Single Board Computer Watchdog"
depends on WATCHDOG && X86
depends on X86
help
This is a driver for the hardware watchdog on the ICP Wafer 5823
Single Board Computer (and probably other similar models).
......@@ -290,7 +287,7 @@ config WAFER_WDT
config I6300ESB_WDT
tristate "Intel 6300ESB Timer/Watchdog"
depends on WATCHDOG && X86 && PCI
depends on X86 && PCI
---help---
Hardware driver for the watchdog timer built into the Intel
6300ESB controller hub.
......@@ -298,31 +295,9 @@ config I6300ESB_WDT
To compile this driver as a module, choose M here: the
module will be called i6300esb.
config I8XX_TCO
tristate "Intel i8xx TCO Timer/Watchdog"
depends on WATCHDOG && (X86 || IA64) && PCI
default n
---help---
Hardware driver for the TCO timer built into the Intel 82801
I/O Controller Hub family. The TCO (Total Cost of Ownership)
timer is a watchdog timer that will reboot the machine after
its second expiration. The expiration time can be configured
with the "heartbeat" parameter.
On some motherboards the driver may fail to reset the chipset's
NO_REBOOT flag which prevents the watchdog from rebooting the
machine. If this is the case you will get a kernel message like
"failed to reset NO_REBOOT flag, reboot disabled by hardware".
To compile this driver as a module, choose M here: the
module will be called i8xx_tco.
Note: This driver will be removed in the near future. Please
use the Intel TCO Timer/Watchdog driver.
config ITCO_WDT
tristate "Intel TCO Timer/Watchdog"
depends on WATCHDOG && (X86 || IA64) && PCI
depends on (X86 || IA64) && PCI
---help---
Hardware driver for the intel TCO timer based watchdog devices.
These drivers are included in the Intel 82801 I/O Controller
......@@ -351,7 +326,7 @@ config ITCO_VENDOR_SUPPORT
config SC1200_WDT
tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
depends on WATCHDOG && X86
depends on X86
help
This is a driver for National Semiconductor PC87307/PC97307 hardware
watchdog cards as found on the SC1200. This watchdog is mainly used
......@@ -365,7 +340,7 @@ config SC1200_WDT
config SCx200_WDT
tristate "National Semiconductor SCx200 Watchdog"
depends on WATCHDOG && SCx200 && PCI
depends on SCx200 && PCI
help
Enable the built-in watchdog timer support on the National
Semiconductor SCx200 processors.
......@@ -374,7 +349,7 @@ config SCx200_WDT
config PC87413_WDT
tristate "NS PC87413 watchdog"
depends on WATCHDOG && X86
depends on X86
---help---
This is the driver for the hardware watchdog on the PC87413 chipset
This watchdog simply watches your kernel to make sure it doesn't
......@@ -388,7 +363,7 @@ config PC87413_WDT
config 60XX_WDT
tristate "SBC-60XX Watchdog Timer"
depends on WATCHDOG && X86
depends on X86
help
This driver can be used with the watchdog timer found on some
single board computers, namely the 6010 PII based computer.
......@@ -402,7 +377,7 @@ config 60XX_WDT
config SBC8360_WDT
tristate "SBC8360 Watchdog Timer"
depends on WATCHDOG && X86
depends on X86
---help---
This is the driver for the hardware watchdog on the SBC8360 Single
......@@ -415,7 +390,7 @@ config SBC8360_WDT
config CPU5_WDT
tristate "SMA CPU5 Watchdog"
depends on WATCHDOG && X86
depends on X86
---help---
TBD.
To compile this driver as a module, choose M here: the
......@@ -423,7 +398,7 @@ config CPU5_WDT
config SMSC37B787_WDT
tristate "Winbond SMsC37B787 Watchdog Timer"
depends on WATCHDOG && X86
depends on X86
---help---
This is the driver for the hardware watchdog component on the
Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
......@@ -443,7 +418,7 @@ config SMSC37B787_WDT
config W83627HF_WDT
tristate "W83627HF Watchdog Timer"
depends on WATCHDOG && X86
depends on X86
---help---
This is the driver for the hardware watchdog on the W83627HF chipset
as used in Advantech PC-9578 and Tyan S2721-533 motherboards
......@@ -458,7 +433,7 @@ config W83627HF_WDT
config W83697HF_WDT
tristate "W83697HF/W83697HG Watchdog Timer"
depends on WATCHDOG && X86
depends on X86
---help---
This is the driver for the hardware watchdog on the W83697HF/HG
chipset as used in Dedibox/VIA motherboards (and likely others).
......@@ -473,7 +448,7 @@ config W83697HF_WDT
config W83877F_WDT
tristate "W83877F (EMACS) Watchdog Timer"
depends on WATCHDOG && X86
depends on X86
---help---
This is the driver for the hardware watchdog on the W83877F chipset
as used in EMACS PC-104 motherboards (and likely others). This
......@@ -488,7 +463,7 @@ config W83877F_WDT
config W83977F_WDT
tristate "W83977F (PCM-5335) Watchdog Timer"
depends on WATCHDOG && X86
depends on X86
---help---
This is the driver for the hardware watchdog on the W83977F I/O chip
as used in AAEON's PCM-5335 SBC (and likely others). This
......@@ -501,7 +476,7 @@ config W83977F_WDT
config MACHZ_WDT
tristate "ZF MachZ Watchdog"
depends on WATCHDOG && X86
depends on X86
---help---
If you are using a ZF Micro MachZ processor, say Y here, otherwise
N. This is the driver for the watchdog timer built-in on that
......@@ -514,7 +489,7 @@ config MACHZ_WDT
config SBC_EPX_C3_WATCHDOG
tristate "Winsystems SBC EPX-C3 watchdog"
depends on WATCHDOG && X86
depends on X86
---help---
This is the driver for the built-in watchdog timer on the EPX-C3
Single-board computer made by Winsystems, Inc.
......@@ -537,19 +512,19 @@ config SBC_EPX_C3_WATCHDOG
config 8xx_WDT
tristate "MPC8xx Watchdog Timer"
depends on WATCHDOG && 8xx
depends on 8xx
config 83xx_WDT
tristate "MPC83xx Watchdog Timer"
depends on WATCHDOG && PPC_83xx
depends on PPC_83xx
config MV64X60_WDT
tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
depends on WATCHDOG && MV64X60
depends on MV64X60
config BOOKE_WDT
bool "PowerPC Book-E Watchdog Timer"
depends on WATCHDOG && (BOOKE || 4xx)
depends on BOOKE || 4xx
---help---
Please see Documentation/watchdog/watchdog-api.txt for
more information.
......@@ -558,7 +533,7 @@ config BOOKE_WDT
config WATCHDOG_RTAS
tristate "RTAS watchdog"
depends on WATCHDOG && PPC_RTAS
depends on PPC_RTAS
help
This driver adds watchdog support for the RTAS watchdog.
......@@ -569,16 +544,23 @@ config WATCHDOG_RTAS
config INDYDOG
tristate "Indy/I2 Hardware Watchdog"
depends on WATCHDOG && SGI_IP22
depends on SGI_IP22
help
Hardware driver for the Indy's/I2's watchdog. This is a
watchdog timer that will reboot the machine after a 60 second
timer expired and no process has written to /dev/watchdog during
that time.
config WDT_MTX1
tristate "MTX-1 Hardware Watchdog"
depends on MIPS_MTX1
help
Hardware driver for the MTX-1 boards. This is a watchdog timer that
will reboot the machine after a 100 seconds timer expired.
config WDT_RM9K_GPI
tristate "RM9000/GPI hardware watchdog"
depends on WATCHDOG && CPU_RM9000
depends on CPU_RM9000
help
Watchdog implementation using the GPI hardware found on
PMC-Sierra RM9xxx CPUs.
......@@ -590,7 +572,7 @@ config WDT_RM9K_GPI
config ZVM_WATCHDOG
tristate "z/VM Watchdog Timer"
depends on WATCHDOG && S390
depends on S390
help
IBM s/390 and zSeries machines running under z/VM 5.1 or later
provide a virtual watchdog timer to their guest that cause a
......@@ -604,7 +586,7 @@ config ZVM_WATCHDOG
config SH_WDT
tristate "SuperH Watchdog"
depends on WATCHDOG && SUPERH
depends on SUPERH
help
This driver adds watchdog support for the integrated watchdog in the
SuperH processors. If you have one of these processors and wish
......@@ -631,7 +613,7 @@ config SH_WDT_MMAP
config WATCHDOG_CP1XXX
tristate "CP1XXX Hardware Watchdog support"
depends on WATCHDOG && SPARC64 && PCI
depends on SPARC64 && PCI
---help---
This is the driver for the hardware watchdog timers present on
Sun Microsystems CompactPCI models CP1400 and CP1500.
......@@ -645,7 +627,7 @@ config WATCHDOG_CP1XXX
config WATCHDOG_RIO
tristate "RIO Hardware Watchdog support"
depends on WATCHDOG && SPARC64 && PCI
depends on SPARC64 && PCI
help
Say Y here to support the hardware watchdog capability on Sun RIO
machines. The watchdog timeout period is normally one minute but
......@@ -656,11 +638,11 @@ config WATCHDOG_RIO
#
comment "ISA-based Watchdog Cards"
depends on WATCHDOG && ISA
depends on ISA
config PCWATCHDOG
tristate "Berkshire Products ISA-PC Watchdog"
depends on WATCHDOG && ISA
depends on ISA
---help---
This is the driver for the Berkshire Products ISA-PC Watchdog card.
This card simply watches your kernel to make sure it doesn't freeze,
......@@ -676,7 +658,7 @@ config PCWATCHDOG
config MIXCOMWD
tristate "Mixcom Watchdog"
depends on WATCHDOG && ISA
depends on ISA
---help---
This is a driver for the Mixcom hardware watchdog cards. This
watchdog simply watches your kernel to make sure it doesn't freeze,
......@@ -690,7 +672,7 @@ config MIXCOMWD
config WDT
tristate "WDT Watchdog timer"
depends on WATCHDOG && ISA
depends on ISA
---help---
If you have a WDT500P or WDT501P watchdog board, say Y here,
otherwise N. It is not possible to probe for this board, which means
......@@ -720,11 +702,11 @@ config WDT_501
#
comment "PCI-based Watchdog Cards"
depends on WATCHDOG && PCI
depends on PCI
config PCIPCWATCHDOG
tristate "Berkshire Products PCI-PC Watchdog"
depends on WATCHDOG && PCI
depends on PCI
---help---
This is the driver for the Berkshire Products PCI-PC Watchdog card.
This card simply watches your kernel to make sure it doesn't freeze,
......@@ -739,7 +721,7 @@ config PCIPCWATCHDOG
config WDTPCI
tristate "PCI-WDT500/501 Watchdog timer"
depends on WATCHDOG && PCI
depends on PCI
---help---
If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
......@@ -766,11 +748,11 @@ config WDT_501_PCI
#
comment "USB-based Watchdog Cards"
depends on WATCHDOG && USB
depends on USB
config USBPCWATCHDOG
tristate "Berkshire Products USB-PC Watchdog"
depends on WATCHDOG && USB
depends on USB
---help---
This is the driver for the Berkshire Products USB-PC Watchdog card.
This card simply watches your kernel to make sure it doesn't freeze,
......@@ -783,4 +765,4 @@ config USBPCWATCHDOG
Most people will say N.
endmenu
endif # WATCHDOG
drivers/char/watchdog/Makefile
View file @ a9deecba
......@@ -46,7 +46,6 @@ obj-$(CONFIG_IB700_WDT) += ib700wdt.o
obj-$(CONFIG_IBMASR) += ibmasr.o
obj-$(CONFIG_WAFER_WDT) += wafer5823wdt.o
obj-$(CONFIG_I6300ESB_WDT) += i6300esb.o
obj-$(CONFIG_I8XX_TCO) += i8xx_tco.o
obj-$(CONFIG_ITCO_WDT) += iTCO_wdt.o iTCO_vendor_support.o
obj-$(CONFIG_SC1200_WDT) += sc1200wdt.o
obj-$(CONFIG_SCx200_WDT) += scx200_wdt.o
......@@ -73,6 +72,7 @@ obj-$(CONFIG_WATCHDOG_RTAS) += wdrtas.o
# MIPS Architecture
obj-$(CONFIG_INDYDOG) += indydog.o
obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o
obj-$(CONFIG_WDT_RM9K_GPI) += rm9k_wdt.o
# S390 Architecture
......
drivers/char/watchdog/cpu5wdt.c
View file @ a9deecba
......@@ -220,17 +220,17 @@ static int __devinit cpu5wdt_init(void)
if ( verbose )
printk(KERN_DEBUG PFX "port=0x%x, verbose=%i\n", port, verbose);
if ( (err = misc_register(&cpu5wdt_misc)) < 0 ) {
printk(KERN_ERR PFX "misc_register failed\n");
goto no_misc;
}
if ( !request_region(port, CPU5WDT_EXTENT, PFX) ) {
printk(KERN_ERR PFX "request_region failed\n");
err = -EBUSY;
goto no_port;
}
if ( (err = misc_register(&cpu5wdt_misc)) < 0 ) {
printk(KERN_ERR PFX "misc_register failed\n");
goto no_misc;
}
/* watchdog reboot? */
val = inb(port + CPU5WDT_STATUS_REG);
val = (val >> 2) & 1;
......@@ -250,9 +250,9 @@ static int __devinit cpu5wdt_init(void)
return 0;
no_port:
misc_deregister(&cpu5wdt_misc);
no_misc:
release_region(port, CPU5WDT_EXTENT);
no_port:
return err;
}
......
drivers/char/watchdog/eurotechwdt.c
View file @ a9deecba
......@@ -413,17 +413,10 @@ 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;
goto out;
}
if (!request_region(io, 2, "eurwdt")) {
......@@ -438,6 +431,13 @@ static int __init eurwdt_init(void)
goto outreg;
}
ret = misc_register(&eurwdt_miscdev);
if (ret) {
printk(KERN_ERR "eurwdt: can't misc_register on minor=%d\n",
WATCHDOG_MINOR);
goto outreboot;
}
eurwdt_unlock_chip();
ret = 0;
......@@ -448,14 +448,14 @@ static int __init eurwdt_init(void)
out:
return ret;
outreboot:
unregister_reboot_notifier(&eurwdt_notifier);
outreg:
release_region(io, 2);
outirq:
free_irq(irq, NULL);
outmisc:
misc_deregister(&eurwdt_miscdev);
goto out;
}
......
drivers/char/watchdog/i8xx_tco.c deleted 100644 → 0
View file @ d9de2622
/*
* i8xx_tco: TCO timer driver for i8xx chipsets
*
* (c) Copyright 2000 kernel concepts <nils@kernelconcepts.de>, All Rights Reserved.
* http://www.kernelconcepts.de
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Neither kernel concepts nor Nils Faerber admit liability nor provide
* warranty for any of this software. This material is provided
* "AS-IS" and at no charge.
*
* (c) Copyright 2000 kernel concepts <nils@kernelconcepts.de>
* developed for
* Jentro AG, Haar/Munich (Germany)
*
* TCO timer driver for i8xx chipsets
* based on softdog.c by Alan Cox <alan@redhat.com>
*
* The TCO timer is implemented in the following I/O controller hubs:
* (See the intel documentation on http://developer.intel.com.)
* 82801AA (ICH) : document number 290655-003, 290677-014,
* 82801AB (ICHO) : document number 290655-003, 290677-014,
* 82801BA (ICH2) : document number 290687-002, 298242-027,
* 82801BAM (ICH2-M) : document number 290687-002, 298242-027,
* 82801CA (ICH3-S) : document number 290733-003, 290739-013,
* 82801CAM (ICH3-M) : document number 290716-001, 290718-007,
* 82801DB (ICH4) : document number 290744-001, 290745-020,
* 82801DBM (ICH4-M) : document number 252337-001, 252663-005,
* 82801E (C-ICH) : document number 273599-001, 273645-002,
* 82801EB (ICH5) : document number 252516-001, 252517-003,
* 82801ER (ICH5R) : document number 252516-001, 252517-003,
*
* 20000710 Nils Faerber
* Initial Version 0.01
* 20000728 Nils Faerber
* 0.02 Fix for SMI_EN->TCO_EN bit, some cleanups
* 20011214 Matt Domsch <Matt_Domsch@dell.com>
* 0.03 Added nowayout module option to override CONFIG_WATCHDOG_NOWAYOUT
* Didn't add timeout option as i810_margin already exists.
* 20020224 Joel Becker, Wim Van Sebroeck
* 0.04 Support for 82801CA(M) chipset, timer margin needs to be > 3,
* add support for WDIOC_SETTIMEOUT and WDIOC_GETTIMEOUT.
* 20020412 Rob Radez <rob@osinvestor.com>, Wim Van Sebroeck
* 0.05 Fix possible timer_alive race, add expect close support,
* clean up ioctls (WDIOC_GETSTATUS, WDIOC_GETBOOTSTATUS and
* WDIOC_SETOPTIONS), made i810tco_getdevice __init,
* removed boot_status, removed tco_timer_read,
* added support for 82801DB and 82801E chipset,
* added support for 82801EB and 8280ER chipset,
* general cleanup.
* 20030921 Wim Van Sebroeck <wim@iguana.be>
* 0.06 change i810_margin to heartbeat, use module_param,
* added notify system support, renamed module to i8xx_tco.
* 20050128 Wim Van Sebroeck <wim@iguana.be>
* 0.07 Added support for the ICH4-M, ICH6, ICH6R, ICH6-M, ICH6W and ICH6RW
* chipsets. Also added support for the "undocumented" ICH7 chipset.
* 20050807 Wim Van Sebroeck <wim@iguana.be>
* 0.08 Make sure that the watchdog is only "armed" when started.
* (Kernel Bug 4251)
* 20060416 Wim Van Sebroeck <wim@iguana.be>
* 0.09 Remove support for the ICH6, ICH6R, ICH6-M, ICH6W and ICH6RW and
* ICH7 chipsets. (See Kernel Bug 6031 - other code will support these
* chipsets)
*/
/*
* Includes, defines, variables, module parameters, ...
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/miscdevice.h>
#include <linux/watchdog.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include "i8xx_tco.h"
/* Module and version information */
#define TCO_VERSION "0.09"
#define TCO_MODULE_NAME "i8xx TCO timer"
#define TCO_DRIVER_NAME TCO_MODULE_NAME ", v" TCO_VERSION
#define PFX TCO_MODULE_NAME ": "
/* internal variables */
static unsigned int ACPIBASE;
static spinlock_t tco_lock; /* Guards the hardware */
static unsigned long timer_alive;
static char tco_expect_close;
static struct pci_dev *i8xx_tco_pci;
/* module parameters */
#define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat (2<heartbeat<39) */
static int heartbeat = WATCHDOG_HEARTBEAT; /* in seconds */
module_param(heartbeat, int, 0);
MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2<heartbeat<39, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
static int nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Some TCO specific functions
*/
static inline unsigned char seconds_to_ticks(int seconds)
{
/* the internal timer is stored as ticks which decrement
* every 0.6 seconds */
return (seconds * 10) / 6;
}
static int tco_timer_start (void)
{
unsigned char val;
spin_lock(&tco_lock);
/* disable chipset's NO_REBOOT bit */
pci_read_config_byte (i8xx_tco_pci, 0xd4, &val);
val &= 0xfd;
pci_write_config_byte (i8xx_tco_pci, 0xd4, val);
/* Bit 11: TCO Timer Halt -> 0 = The TCO timer is enabled to count */
val = inb (TCO1_CNT + 1);
val &= 0xf7;
outb (val, TCO1_CNT + 1);
val = inb (TCO1_CNT + 1);
spin_unlock(&tco_lock);
if (val & 0x08)
return -1;
return 0;
}
static int tco_timer_stop (void)
{
unsigned char val, val1;
spin_lock(&tco_lock);
/* Bit 11: TCO Timer Halt -> 1 = The TCO timer is disabled */
val = inb (TCO1_CNT + 1);
val |= 0x08;
outb (val, TCO1_CNT + 1);
val = inb (TCO1_CNT + 1);
/* Set the NO_REBOOT bit to prevent later reboots, just for sure */
pci_read_config_byte (i8xx_tco_pci, 0xd4, &val1);
val1 |= 0x02;
pci_write_config_byte (i8xx_tco_pci, 0xd4, val1);
spin_unlock(&tco_lock);
if ((val & 0x08) == 0)
return -1;
return 0;
}
static int tco_timer_keepalive (void)
{
spin_lock(&tco_lock);
/* Reload the timer by writing to the TCO Timer Reload register */
outb (0x01, TCO1_RLD);
spin_unlock(&tco_lock);
return 0;
}
static int tco_timer_set_heartbeat (int t)
{
unsigned char val;
unsigned char tmrval;
tmrval = seconds_to_ticks(t);
/* from the specs: */
/* "Values of 0h-3h are ignored and should not be attempted" */
if (tmrval > 0x3f || tmrval < 0x04)
return -EINVAL;
/* Write new heartbeat to watchdog */
spin_lock(&tco_lock);
val = inb (TCO1_TMR);
val &= 0xc0;
val |= tmrval;
outb (val, TCO1_TMR);
val = inb (TCO1_TMR);
spin_unlock(&tco_lock);
if ((val & 0x3f) != tmrval)
return -EINVAL;
heartbeat = t;
return 0;
}
static int tco_timer_get_timeleft (int *time_left)
{
unsigned char val;
spin_lock(&tco_lock);
/* read the TCO Timer */
val = inb (TCO1_RLD);
val &= 0x3f;
spin_unlock(&tco_lock);
*time_left = (int)((val * 6) / 10);
return 0;
}
/*
* /dev/watchdog handling
*/
static int i8xx_tco_open (struct inode *inode, struct file *file)
{
/* /dev/watchdog can only be opened once */
if (test_and_set_bit(0, &timer_alive))
return -EBUSY;
/*
* Reload and activate timer
*/
tco_timer_keepalive ();
tco_timer_start ();
return nonseekable_open(inode, file);
}
static int i8xx_tco_release (struct inode *inode, struct file *file)
{
/*
* Shut off the timer.
*/
if (tco_expect_close == 42) {
tco_timer_stop ();
} else {
printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
tco_timer_keepalive ();
}
clear_bit(0, &timer_alive);
tco_expect_close = 0;
return 0;
}
static ssize_t i8xx_tco_write (struct file *file, const char __user *data,
size_t len, loff_t * ppos)
{
/* See if we got the magic character 'V' and reload the timer */
if (len) {
if (!nowayout) {
size_t i;
/* note: just in case someone wrote the magic character
* five months ago... */
tco_expect_close = 0;
/* scan to see whether or not we got the magic character */
for (i = 0; i != len; i++) {
char c;
if(get_user(c, data+i))
return -EFAULT;
if (c == 'V')
tco_expect_close = 42;
}
}
/* someone wrote to us, we should reload the timer */
tco_timer_keepalive ();
}
return len;
}
static int i8xx_tco_ioctl (struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
int new_options, retval = -EINVAL;
int new_heartbeat;
int time_left;
void __user *argp = (void __user *)arg;
int __user *p = argp;
static struct watchdog_info ident = {
.options = WDIOF_SETTIMEOUT |
WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
.firmware_version = 0,
.identity = TCO_MODULE_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_KEEPALIVE:
tco_timer_keepalive ();
return 0;
case WDIOC_SETOPTIONS:
{
if (get_user (new_options, p))
return -EFAULT;
if (new_options & WDIOS_DISABLECARD) {
tco_timer_stop ();
retval = 0;
}
if (new_options & WDIOS_ENABLECARD) {
tco_timer_keepalive ();
tco_timer_start ();
retval = 0;
}
return retval;
}
case WDIOC_SETTIMEOUT:
{
if (get_user(new_heartbeat, p))
return -EFAULT;
if (tco_timer_set_heartbeat(new_heartbeat))
return -EINVAL;
tco_timer_keepalive ();
/* Fall */
}
case WDIOC_GETTIMEOUT:
return put_user(heartbeat, p);
case WDIOC_GETTIMELEFT:
{
if (tco_timer_get_timeleft(&time_left))
return -EINVAL;
return put_user(time_left, p);
}
default:
return -ENOTTY;
}
}
/*
* Notify system
*/
static int i8xx_tco_notify_sys (struct notifier_block *this, unsigned long code, void *unused)
{
if (code==SYS_DOWN || code==SYS_HALT) {
/* Turn the WDT off */
tco_timer_stop ();
}
return NOTIFY_DONE;
}
/*
* Kernel Interfaces
*/
static const struct file_operations i8xx_tco_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = i8xx_tco_write,
.ioctl = i8xx_tco_ioctl,
.open = i8xx_tco_open,
.release = i8xx_tco_release,
};
static struct miscdevice i8xx_tco_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &i8xx_tco_fops,
};
static struct notifier_block i8xx_tco_notifier = {
.notifier_call = i8xx_tco_notify_sys,
};
/*
* 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 i8xx_tco_pci_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801E_0) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1) },
{ }, /* End of list */
};
MODULE_DEVICE_TABLE (pci, i8xx_tco_pci_tbl);
/*
* Init & exit routines
*/
static unsigned char __init i8xx_tco_getdevice (void)
{
struct pci_dev *dev = NULL;
u8 val1, val2;
u16 badr;
/*
* Find the PCI device
*/
for_each_pci_dev(dev)
if (pci_match_id(i8xx_tco_pci_tbl, dev)) {
i8xx_tco_pci = dev;
break;
}
if (i8xx_tco_pci) {
/*
* Find the ACPI 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_byte (i8xx_tco_pci, 0x40, &val1);
pci_read_config_byte (i8xx_tco_pci, 0x41, &val2);
badr = ((val2 << 1) | (val1 >> 7)) << 7;
ACPIBASE = badr;
/* Something's wrong here, ACPIBASE has to be set */
if (badr == 0x0001 || badr == 0x0000) {
printk (KERN_ERR PFX "failed to get TCOBASE address\n");
pci_dev_put(i8xx_tco_pci);
return 0;
}
/* Check chipset's NO_REBOOT bit */
pci_read_config_byte (i8xx_tco_pci, 0xd4, &val1);
if (val1 & 0x02) {
val1 &= 0xfd;
pci_write_config_byte (i8xx_tco_pci, 0xd4, val1);
pci_read_config_byte (i8xx_tco_pci, 0xd4, &val1);
if (val1 & 0x02) {
printk (KERN_ERR PFX "failed to reset NO_REBOOT flag, reboot disabled by hardware\n");
pci_dev_put(i8xx_tco_pci);
return 0; /* Cannot reset NO_REBOOT bit */
}
}
/* Disable reboots untill the watchdog starts */
val1 |= 0x02;
pci_write_config_byte (i8xx_tco_pci, 0xd4, val1);
/* Set the TCO_EN bit in SMI_EN register */
if (!request_region (SMI_EN + 1, 1, "i8xx TCO")) {
printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
SMI_EN + 1);
pci_dev_put(i8xx_tco_pci);
return 0;
}
val1 = inb (SMI_EN + 1);
val1 &= 0xdf;
outb (val1, SMI_EN + 1);
release_region (SMI_EN + 1, 1);
return 1;
}
return 0;
}
static int __init watchdog_init (void)
{
int ret;
spin_lock_init(&tco_lock);
/* Check whether or not the hardware watchdog is there */
if (!i8xx_tco_getdevice () || i8xx_tco_pci == NULL)
return -ENODEV;
if (!request_region (TCOBASE, 0x10, "i8xx TCO")) {
printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
TCOBASE);
ret = -EIO;
goto out;
}
/* Clear out the (probably old) status */
outb (0, TCO1_STS);
outb (3, TCO2_STS);
/* Check that the heartbeat value is within it's range ; if not reset to the default */
if (tco_timer_set_heartbeat (heartbeat)) {
heartbeat = WATCHDOG_HEARTBEAT;
tco_timer_set_heartbeat (heartbeat);
printk(KERN_INFO PFX "heartbeat value must be 2<heartbeat<39, using %d\n",
heartbeat);
}
ret = register_reboot_notifier(&i8xx_tco_notifier);
if (ret != 0) {
printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
ret);
goto unreg_region;
}
ret = misc_register(&i8xx_tco_miscdev);
if (ret != 0) {
printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
goto unreg_notifier;
}
tco_timer_stop ();
printk (KERN_INFO PFX "initialized (0x%04x). heartbeat=%d sec (nowayout=%d)\n",
TCOBASE, heartbeat, nowayout);
return 0;
unreg_notifier:
unregister_reboot_notifier(&i8xx_tco_notifier);
unreg_region:
release_region (TCOBASE, 0x10);
out:
pci_dev_put(i8xx_tco_pci);
return ret;
}
static void __exit watchdog_cleanup (void)
{
/* Stop the timer before we leave */
if (!nowayout)
tco_timer_stop ();
/* Deregister */
misc_deregister (&i8xx_tco_miscdev);
unregister_reboot_notifier(&i8xx_tco_notifier);
release_region (TCOBASE, 0x10);
pci_dev_put(i8xx_tco_pci);
}
module_init(watchdog_init);
module_exit(watchdog_cleanup);
MODULE_AUTHOR("Nils Faerber");
MODULE_DESCRIPTION("TCO timer driver for i8xx chipsets");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
drivers/char/watchdog/i8xx_tco.h deleted 100644 → 0
View file @ d9de2622
/*
* i8xx_tco: TCO timer driver for i8xx chipsets
*
* (c) Copyright 2000 kernel concepts <nils@kernelconcepts.de>, All Rights Reserved.
* http://www.kernelconcepts.de
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Neither kernel concepts nor Nils Faerber admit liability nor provide
* warranty for any of this software. This material is provided
* "AS-IS" and at no charge.
*
* (c) Copyright 2000 kernel concepts <nils@kernelconcepts.de>
* developed for
* Jentro AG, Haar/Munich (Germany)
*
* TCO timer driver for i8xx chipsets
* based on softdog.c by Alan Cox <alan@redhat.com>
*
* For history and the complete list of supported I/O Controller Hub's
* see i8xx_tco.c
*/
/*
* Some address definitions for the TCO
*/
#define TCOBASE ACPIBASE + 0x60 /* TCO base address */
#define TCO1_RLD TCOBASE + 0x00 /* TCO Timer Reload and Current Value */
#define TCO1_TMR TCOBASE + 0x01 /* TCO Timer Initial Value */
#define TCO1_DAT_IN TCOBASE + 0x02 /* TCO Data In Register */
#define TCO1_DAT_OUT TCOBASE + 0x03 /* TCO Data Out Register */
#define TCO1_STS TCOBASE + 0x04 /* TCO1 Status Register */
#define TCO2_STS TCOBASE + 0x06 /* TCO2 Status Register */
#define TCO1_CNT TCOBASE + 0x08 /* TCO1 Control Register */
#define TCO2_CNT TCOBASE + 0x0a /* TCO2 Control Register */
#define SMI_EN ACPIBASE + 0x30 /* SMI Control and Enable Register */
drivers/char/watchdog/ibmasr.c
View file @ a9deecba
......@@ -367,18 +367,17 @@ static int __init ibmasr_init(void)
if (!asr_type)
return -ENODEV;
rc = asr_get_base_address();
if (rc)
return rc;
rc = misc_register(&asr_miscdev);
if (rc < 0) {
release_region(asr_base, asr_length);
printk(KERN_ERR PFX "failed to register misc device\n");
return rc;
}
rc = asr_get_base_address();
if (rc) {
misc_deregister(&asr_miscdev);
return rc;
}
return 0;
}
......
drivers/char/watchdog/machzwd.c
View file @ a9deecba
......@@ -440,13 +440,6 @@ static int __init zf_init(void)
spin_lock_init(&zf_lock);
spin_lock_init(&zf_port_lock);
ret = misc_register(&zf_miscdev);
if (ret){
printk(KERN_ERR "can't misc_register on minor=%d\n",
WATCHDOG_MINOR);
goto out;
}
if(!request_region(ZF_IOBASE, 3, "MachZ ZFL WDT")){
printk(KERN_ERR "cannot reserve I/O ports at %d\n",
ZF_IOBASE);
......@@ -461,16 +454,23 @@ static int __init zf_init(void)
goto no_reboot;
}
ret = misc_register(&zf_miscdev);
if (ret){
printk(KERN_ERR "can't misc_register on minor=%d\n",
WATCHDOG_MINOR);
goto no_misc;
}
zf_set_status(0);
zf_set_control(0);
return 0;
no_misc:
unregister_reboot_notifier(&zf_notifier);
no_reboot:
release_region(ZF_IOBASE, 3);
no_region:
misc_deregister(&zf_miscdev);
out:
return ret;
}
......
drivers/char/watchdog/mtx-1_wdt.c 0 → 100644
View file @ a9deecba
/*
* Driver for the MTX-1 Watchdog.
*
* (C) Copyright 2005 4G Systems <info@4g-systems.biz>, All Rights Reserved.
* http://www.4g-systems.biz
*
* (C) Copyright 2007 OpenWrt.org, Florian Fainelli <florian@openwrt.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Neither Michael Stickel nor 4G Systems admit liability nor provide
* warranty for any of this software. This material is provided
* "AS-IS" and at no charge.
*
* (c) Copyright 2005 4G Systems <info@4g-systems.biz>
*
* Release 0.01.
* Author: Michael Stickel michael.stickel@4g-systems.biz
*
* Release 0.02.
* Author: Florian Fainelli florian@openwrt.org
* use the Linux watchdog/timer APIs
*
* The Watchdog is configured to reset the MTX-1
* if it is not triggered for 100 seconds.
* It should not be triggered more often than 1.6 seconds.
*
* A timer triggers the watchdog every 5 seconds, until
* it is opened for the first time. After the first open
* it MUST be triggered every 2..95 seconds.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/miscdevice.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/timer.h>
#include <linux/completion.h>
#include <linux/jiffies.h>
#include <linux/watchdog.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/mach-au1x00/au1000.h>
#define MTX1_WDT_INTERVAL (5 * HZ)
static int ticks = 100 * HZ;
static struct {
struct completion stop;
volatile int running;
struct timer_list timer;
volatile int queue;
int default_ticks;
unsigned long inuse;
} mtx1_wdt_device;
static void mtx1_wdt_trigger(unsigned long unused)
{
u32 tmp;
if (mtx1_wdt_device.running)
ticks--;
/*
* toggle GPIO2_15
*/
tmp = au_readl(GPIO2_DIR);
tmp = (tmp & ~(1<<15)) | ((~tmp) & (1<<15));
au_writel (tmp, GPIO2_DIR);
if (mtx1_wdt_device.queue && ticks)
mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
else {
complete(&mtx1_wdt_device.stop);
}
}
static void mtx1_wdt_reset(void)
{
ticks = mtx1_wdt_device.default_ticks;
}
static void mtx1_wdt_start(void)
{
if (!mtx1_wdt_device.queue) {
mtx1_wdt_device.queue = 1;
au_writel (au_readl(GPIO2_DIR) | (u32)(1<<15), GPIO2_DIR);
mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
}
mtx1_wdt_device.running++;
}
static int mtx1_wdt_stop(void)
{
if (mtx1_wdt_device.queue) {
mtx1_wdt_device.queue = 0;
au_writel (au_readl(GPIO2_DIR) & ~((u32)(1<<15)), GPIO2_DIR);
}
ticks = mtx1_wdt_device.default_ticks;
return 0;
}
/* Filesystem functions */
static int mtx1_wdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &mtx1_wdt_device.inuse))
return -EBUSY;
return nonseekable_open(inode, file);
}
static int mtx1_wdt_release(struct inode *inode, struct file *file)
{
clear_bit(0, &mtx1_wdt_device.inuse);
return 0;
}
static int mtx1_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
unsigned int value;
static struct watchdog_info ident =
{
.options = WDIOF_CARDRESET,
.identity = "MTX-1 WDT",
};
switch(cmd) {
case WDIOC_KEEPALIVE:
mtx1_wdt_reset();
break;
case WDIOC_GETSTATUS:
if ( copy_to_user(argp, &value, sizeof(int)) )
return -EFAULT;
break;
case WDIOC_GETSUPPORT:
if ( copy_to_user(argp, &ident, sizeof(ident)) )
return -EFAULT;
break;
case WDIOC_SETOPTIONS:
if ( copy_from_user(&value, argp, sizeof(int)) )
return -EFAULT;
switch(value) {
case WDIOS_ENABLECARD:
mtx1_wdt_start();
break;
case WDIOS_DISABLECARD:
return mtx1_wdt_stop();
default:
return -EINVAL;
}
break;
default:
return -ENOTTY;
}
return 0;
}
static ssize_t mtx1_wdt_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
{
if (!count)
return -EIO;
mtx1_wdt_reset();
return count;
}
static struct file_operations mtx1_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.ioctl = mtx1_wdt_ioctl,
.open = mtx1_wdt_open,
.write = mtx1_wdt_write,
.release = mtx1_wdt_release
};
static struct miscdevice mtx1_wdt_misc = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &mtx1_wdt_fops
};
static int __init mtx1_wdt_init(void)
{
int ret;
if ((ret = misc_register(&mtx1_wdt_misc)) < 0) {
printk(KERN_ERR " mtx-1_wdt : failed to register\n");
return ret;
}
init_completion(&mtx1_wdt_device.stop);
mtx1_wdt_device.queue = 0;
clear_bit(0, &mtx1_wdt_device.inuse);
setup_timer(&mtx1_wdt_device.timer, mtx1_wdt_trigger, 0L);
mtx1_wdt_device.default_ticks = ticks;
mtx1_wdt_start();
printk(KERN_INFO "MTX-1 Watchdog driver\n");
return 0;
}
static void __exit mtx1_wdt_exit(void)
{
if (mtx1_wdt_device.queue) {
mtx1_wdt_device.queue = 0;
wait_for_completion(&mtx1_wdt_device.stop);
}
misc_deregister(&mtx1_wdt_misc);
}
module_init(mtx1_wdt_init);
module_exit(mtx1_wdt_exit);
MODULE_AUTHOR("Michael Stickel, Florian Fainelli");
MODULE_DESCRIPTION("Driver for the MTX-1 watchdog");
MODULE_LICENSE("GPL");
drivers/char/watchdog/pcwd.c
View file @ a9deecba
......@@ -59,10 +59,10 @@
#include <linux/jiffies.h> /* For jiffies stuff */
#include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */
#include <linux/watchdog.h> /* For the watchdog specific items */
#include <linux/notifier.h> /* For notifier support */
#include <linux/reboot.h> /* For reboot_notifier stuff */
#include <linux/reboot.h> /* For kernel_power_off() */
#include <linux/init.h> /* For __init/__exit/... */
#include <linux/fs.h> /* For file operations */
#include <linux/isa.h> /* For isa devices */
#include <linux/ioport.h> /* For io-port access */
#include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */
......@@ -70,8 +70,8 @@
#include <asm/io.h> /* For inb/outb/... */
/* Module and version information */
#define WATCHDOG_VERSION "1.18"
#define WATCHDOG_DATE "21 Jan 2007"
#define WATCHDOG_VERSION "1.20"
#define WATCHDOG_DATE "18 Feb 2007"
#define WATCHDOG_DRIVER_NAME "ISA-PC Watchdog"
#define WATCHDOG_NAME "pcwd"
#define PFX WATCHDOG_NAME ": "
......@@ -88,6 +88,15 @@
#define PCWD_REVISION_A 1
#define PCWD_REVISION_C 2
/*
* These are the auto-probe addresses available.
*
* Revision A only uses ports 0x270 and 0x370. Revision C introduced 0x350.
* Revision A has an address range of 2 addresses, while Revision C has 4.
*/
#define PCWD_ISA_NR_CARDS 3
static int pcwd_ioports[] = { 0x270, 0x350, 0x370, 0x000 };
/*
* These are the defines that describe the control status bits for the
* PCI-PC Watchdog card.
......@@ -485,7 +494,7 @@ static int pcwd_get_status(int *status)
if (control_status & WD_T110) {
*status |= WDIOF_OVERHEAT;
if (temp_panic) {
printk (KERN_INFO PFX "Temperature overheat trip!\n");
printk(KERN_INFO PFX "Temperature overheat trip!\n");
kernel_power_off();
/* or should we just do a: panic(PFX "Temperature overheat trip!\n"); */
}
......@@ -497,7 +506,7 @@ static int pcwd_get_status(int *status)
if (control_status & WD_REVC_TTRP) {
*status |= WDIOF_OVERHEAT;
if (temp_panic) {
printk (KERN_INFO PFX "Temperature overheat trip!\n");
printk(KERN_INFO PFX "Temperature overheat trip!\n");
kernel_power_off();
/* or should we just do a: panic(PFX "Temperature overheat trip!\n"); */
}
......@@ -733,20 +742,6 @@ static int pcwd_temp_close(struct inode *inode, struct file *file)
return 0;
}
/*
* Notify system
*/
static int pcwd_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
{
if (code==SYS_DOWN || code==SYS_HALT) {
/* Turn the WDT off */
pcwd_stop();
}
return NOTIFY_DONE;
}
/*
* Kernel Interfaces
*/
......@@ -780,10 +775,6 @@ static struct miscdevice temp_miscdev = {
.fops = &pcwd_temp_fops,
};
static struct notifier_block pcwd_notifier = {
.notifier_call = pcwd_notify_sys,
};
/*
* Init & exit routines
*/
......@@ -803,10 +794,67 @@ static inline int get_revision(void)
return r;
}
static int __devinit pcwatchdog_init(int base_addr)
/*
* The ISA cards have a heartbeat bit in one of the registers, which
* register is card dependent. The heartbeat bit is monitored, and if
* found, is considered proof that a Berkshire card has been found.
* The initial rate is once per second at board start up, then twice
* per second for normal operation.
*/
static int __devinit pcwd_isa_match(struct device *dev, unsigned int id)
{
int base_addr=pcwd_ioports[id];
int port0, last_port0; /* Reg 0, in case it's REV A */
int port1, last_port1; /* Register 1 for REV C cards */
int i;
int retval;
if (debug >= DEBUG)
printk(KERN_DEBUG PFX "pcwd_isa_match id=%d\n",
id);
if (!request_region (base_addr, 4, "PCWD")) {
printk(KERN_INFO PFX "Port 0x%04x unavailable\n", base_addr);
return 0;
}
retval = 0;
port0 = inb_p(base_addr); /* For REV A boards */
port1 = inb_p(base_addr + 1); /* For REV C boards */
if (port0 != 0xff || port1 != 0xff) {
/* Not an 'ff' from a floating bus, so must be a card! */
for (i = 0; i < 4; ++i) {
msleep(500);
last_port0 = port0;
last_port1 = port1;
port0 = inb_p(base_addr);
port1 = inb_p(base_addr + 1);
/* Has either hearbeat bit changed? */
if ((port0 ^ last_port0) & WD_HRTBT ||
(port1 ^ last_port1) & WD_REVC_HRBT) {
retval = 1;
break;
}
}
}
release_region (base_addr, 4);
return retval;
}
static int __devinit pcwd_isa_probe(struct device *dev, unsigned int id)
{
int ret;
if (debug >= DEBUG)
printk(KERN_DEBUG PFX "pcwd_isa_probe id=%d\n",
id);
cards_found++;
if (cards_found == 1)
printk(KERN_INFO PFX "v%s Ken Hollis (kenji@bitgate.com)\n", WD_VER);
......@@ -816,11 +864,13 @@ static int __devinit pcwatchdog_init(int base_addr)
return -ENODEV;
}
if (base_addr == 0x0000) {
if (pcwd_ioports[id] == 0x0000) {
printk(KERN_ERR PFX "No I/O-Address for card detected\n");
return -ENODEV;
}
pcwd_private.io_addr = base_addr;
pcwd_private.io_addr = pcwd_ioports[id];
spin_lock_init(&pcwd_private.io_lock);
/* Check card's revision */
pcwd_private.revision = get_revision();
......@@ -828,8 +878,8 @@ static int __devinit pcwatchdog_init(int base_addr)
if (!request_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4, "PCWD")) {
printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
pcwd_private.io_addr);
pcwd_private.io_addr = 0x0000;
return -EIO;
ret=-EIO;
goto error_request_region;
}
/* Initial variables */
......@@ -865,24 +915,12 @@ static int __devinit pcwatchdog_init(int base_addr)
WATCHDOG_HEARTBEAT);
}
ret = register_reboot_notifier(&pcwd_notifier);
if (ret) {
printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
ret);
release_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
pcwd_private.io_addr = 0x0000;
return ret;
}
if (pcwd_private.supports_temp) {
ret = misc_register(&temp_miscdev);
if (ret) {
printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
TEMP_MINOR, ret);
unregister_reboot_notifier(&pcwd_notifier);
release_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
pcwd_private.io_addr = 0x0000;
return ret;
goto error_misc_register_temp;
}
}
......@@ -890,22 +928,34 @@ static int __devinit pcwatchdog_init(int base_addr)
if (ret) {
printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
if (pcwd_private.supports_temp)
misc_deregister(&temp_miscdev);
unregister_reboot_notifier(&pcwd_notifier);
release_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
pcwd_private.io_addr = 0x0000;
return ret;
goto error_misc_register_watchdog;
}
printk(KERN_INFO PFX "initialized. heartbeat=%d sec (nowayout=%d)\n",
heartbeat, nowayout);
return 0;
error_misc_register_watchdog:
if (pcwd_private.supports_temp)
misc_deregister(&temp_miscdev);
error_misc_register_temp:
release_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
error_request_region:
pcwd_private.io_addr = 0x0000;
cards_found--;
return ret;
}
static void __devexit pcwatchdog_exit(void)
static int __devexit pcwd_isa_remove(struct device *dev, unsigned int id)
{
if (debug >= DEBUG)
printk(KERN_DEBUG PFX "pcwd_isa_remove id=%d\n",
id);
if (!pcwd_private.io_addr)
return 1;
/* Disable the board */
if (!nowayout)
pcwd_stop();
......@@ -914,102 +964,50 @@ static void __devexit pcwatchdog_exit(void)
misc_deregister(&pcwd_miscdev);
if (pcwd_private.supports_temp)
misc_deregister(&temp_miscdev);
unregister_reboot_notifier(&pcwd_notifier);
release_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
pcwd_private.io_addr = 0x0000;
cards_found--;
return 0;
}
/*
* The ISA cards have a heartbeat bit in one of the registers, which
* register is card dependent. The heartbeat bit is monitored, and if
* found, is considered proof that a Berkshire card has been found.
* The initial rate is once per second at board start up, then twice
* per second for normal operation.
*/
static int __init pcwd_checkcard(int base_addr)
static void pcwd_isa_shutdown(struct device *dev, unsigned int id)
{
int port0, last_port0; /* Reg 0, in case it's REV A */
int port1, last_port1; /* Register 1 for REV C cards */
int i;
int retval;
if (!request_region (base_addr, 4, "PCWD")) {
printk (KERN_INFO PFX "Port 0x%04x unavailable\n", base_addr);
return 0;
}
retval = 0;
port0 = inb_p(base_addr); /* For REV A boards */
port1 = inb_p(base_addr + 1); /* For REV C boards */
if (port0 != 0xff || port1 != 0xff) {
/* Not an 'ff' from a floating bus, so must be a card! */
for (i = 0; i < 4; ++i) {
msleep(500);
last_port0 = port0;
last_port1 = port1;
port0 = inb_p(base_addr);
port1 = inb_p(base_addr + 1);
/* Has either hearbeat bit changed? */
if ((port0 ^ last_port0) & WD_HRTBT ||
(port1 ^ last_port1) & WD_REVC_HRBT) {
retval = 1;
break;
}
}
}
release_region (base_addr, 4);
if (debug >= DEBUG)
printk(KERN_DEBUG PFX "pcwd_isa_shutdown id=%d\n",
id);
return retval;
pcwd_stop();
}
/*
* These are the auto-probe addresses available.
*
* Revision A only uses ports 0x270 and 0x370. Revision C introduced 0x350.
* Revision A has an address range of 2 addresses, while Revision C has 4.
*/
static int pcwd_ioports[] = { 0x270, 0x350, 0x370, 0x000 };
static struct isa_driver pcwd_isa_driver = {
.match = pcwd_isa_match,
.probe = pcwd_isa_probe,
.remove = __devexit_p(pcwd_isa_remove),
.shutdown = pcwd_isa_shutdown,
.driver = {
.owner = THIS_MODULE,
.name = WATCHDOG_NAME,
},
};
static int __init pcwd_init_module(void)
{
int i, found = 0;
spin_lock_init(&pcwd_private.io_lock);
for (i = 0; pcwd_ioports[i] != 0; i++) {
if (pcwd_checkcard(pcwd_ioports[i])) {
if (!(pcwatchdog_init(pcwd_ioports[i])))
found++;
}
}
if (!found) {
printk (KERN_INFO PFX "No card detected, or port not available\n");
return -ENODEV;
}
return 0;
return isa_register_driver(&pcwd_isa_driver, PCWD_ISA_NR_CARDS);
}
static void __exit pcwd_cleanup_module(void)
{
if (pcwd_private.io_addr)
pcwatchdog_exit();
isa_unregister_driver(&pcwd_isa_driver);
printk(KERN_INFO PFX "Watchdog Module Unloaded.\n");
}
module_init(pcwd_init_module);
module_exit(pcwd_cleanup_module);
MODULE_AUTHOR("Ken Hollis <kenji@bitgate.com>");
MODULE_AUTHOR("Ken Hollis <kenji@bitgate.com>, Wim Van Sebroeck <wim@iguana.be>");
MODULE_DESCRIPTION("Berkshire ISA-PC Watchdog driver");
MODULE_VERSION(WATCHDOG_VERSION);
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
MODULE_ALIAS_MISCDEV(TEMP_MINOR);
drivers/char/watchdog/pcwd_usb.c
View file @ a9deecba
......@@ -146,7 +146,7 @@ struct usb_pcwd_private {
atomic_t cmd_received; /* true if we received a report after a command */
int exists; /* Wether or not the device exists */
struct semaphore sem; /* locks this structure */
struct mutex mtx; /* locks this structure */
};
static struct usb_pcwd_private *usb_pcwd_device;
......@@ -635,7 +635,7 @@ static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_devi
usb_pcwd_device = usb_pcwd;
init_MUTEX (&usb_pcwd->sem);
mutex_init(&usb_pcwd->mtx);
usb_pcwd->udev = udev;
usb_pcwd->interface = interface;
usb_pcwd->interface_number = iface_desc->desc.bInterfaceNumber;
......@@ -763,7 +763,7 @@ static void usb_pcwd_disconnect(struct usb_interface *interface)
usb_pcwd = usb_get_intfdata (interface);
usb_set_intfdata (interface, NULL);
down (&usb_pcwd->sem);
mutex_lock(&usb_pcwd->mtx);
/* Stop the timer before we leave */
if (!nowayout)
......@@ -777,7 +777,7 @@ static void usb_pcwd_disconnect(struct usb_interface *interface)
misc_deregister(&usb_pcwd_temperature_miscdev);
unregister_reboot_notifier(&usb_pcwd_notifier);
up (&usb_pcwd->sem);
mutex_unlock(&usb_pcwd->mtx);
/* Delete the USB PCWD device */
usb_pcwd_delete(usb_pcwd);
......
drivers/char/watchdog/s3c2410_wdt.c
View file @ a9deecba
......@@ -379,14 +379,14 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
DBG("probe: mapped wdt_base=%p\n", wdt_base);
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res == NULL) {
wdt_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (wdt_irq == NULL) {
printk(KERN_INFO PFX "failed to get irq resource\n");
ret = -ENOENT;
goto err_map;
}
ret = request_irq(res->start, s3c2410wdt_irq, 0, pdev->name, pdev);
ret = request_irq(wdt_irq->start, s3c2410wdt_irq, 0, pdev->name, pdev);
if (ret != 0) {
printk(KERN_INFO PFX "failed to install irq (%d)\n", ret);
goto err_map;
......
drivers/char/watchdog/sbc8360.c
View file @ a9deecba
......@@ -333,18 +333,17 @@ static int __init sbc8360_init(void)
int res;
unsigned long int mseconds = 60000;
spin_lock_init(&sbc8360_lock);
res = misc_register(&sbc8360_miscdev);
if (res) {
printk(KERN_ERR PFX "failed to register misc device\n");
goto out_nomisc;
if (timeout < 0 || timeout > 63) {
printk(KERN_ERR PFX "Invalid timeout index (must be 0-63).\n");
res = -EINVAL;
goto out;
}
if (!request_region(SBC8360_ENABLE, 1, "SBC8360")) {
printk(KERN_ERR PFX "ENABLE method I/O %X is not available.\n",
SBC8360_ENABLE);
res = -EIO;
goto out_noenablereg;
goto out;
}
if (!request_region(SBC8360_BASETIME, 1, "SBC8360")) {
printk(KERN_ERR PFX
......@@ -360,10 +359,11 @@ static int __init sbc8360_init(void)
goto out_noreboot;
}
if (timeout < 0 || timeout > 63) {
printk(KERN_ERR PFX "Invalid timeout index (must be 0-63).\n");
res = -EINVAL;
goto out_noreboot;
spin_lock_init(&sbc8360_lock);
res = misc_register(&sbc8360_miscdev);
if (res) {
printk(KERN_ERR PFX "failed to register misc device\n");
goto out_nomisc;
}
wd_margin = wd_times[timeout][0];
......@@ -383,13 +383,13 @@ static int __init sbc8360_init(void)
return 0;
out_nomisc:
unregister_reboot_notifier(&sbc8360_notifier);
out_noreboot:
release_region(SBC8360_ENABLE, 1);
release_region(SBC8360_BASETIME, 1);
out_noenablereg:
out_nobasetimereg:
misc_deregister(&sbc8360_miscdev);
out_nomisc:
release_region(SBC8360_ENABLE, 1);
out:
return res;
}
......
drivers/char/watchdog/w83627hf_wdt.c
View file @ a9deecba
/*
* w83627hf WDT driver
* w83627hf/thf WDT driver
*
* (c) Copyright 2007 Vlad Drukker <vlad@storewiz.com>
* added support for W83627THF.
*
* (c) Copyright 2003 Pdraig Brady <P@draigBrady.com>
*
......@@ -39,7 +42,7 @@
#include <asm/uaccess.h>
#include <asm/system.h>
#define WATCHDOG_NAME "w83627hf WDT"
#define WATCHDOG_NAME "w83627hf/thf WDT"
#define PFX WATCHDOG_NAME ": "
#define WATCHDOG_TIMEOUT 60 /* 60 sec default timeout */
......@@ -50,7 +53,7 @@ static spinlock_t io_lock;
/* You must set this - there is no sane way to probe for this board. */
static int wdt_io = 0x2E;
module_param(wdt_io, int, 0);
MODULE_PARM_DESC(wdt_io, "w83627hf WDT io port (default 0x2E)");
MODULE_PARM_DESC(wdt_io, "w83627hf/thf WDT io port (default 0x2E)");
static int timeout = WATCHDOG_TIMEOUT; /* in seconds */
module_param(timeout, int, 0);
......@@ -71,9 +74,19 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" _
static void
w83627hf_select_wd_register(void)
{
unsigned char c;
outb_p(0x87, WDT_EFER); /* Enter extended function mode */
outb_p(0x87, WDT_EFER); /* Again according to manual */
outb(0x20, WDT_EFER); /* check chip version */
c = inb(WDT_EFDR);
if (c == 0x82) { /* W83627THF */
outb_p(0x2b, WDT_EFER); /* select GPIO3 */
c = ((inb_p(WDT_EFDR) & 0xf7) | 0x04); /* select WDT0 */
outb_p(0x2b, WDT_EFER);
outb_p(c, WDT_EFDR); /* set GPIO3 to WDT0 */
}
outb_p(0x07, WDT_EFER); /* point to logical device number reg */
outb_p(0x08, WDT_EFDR); /* select logical device 8 (GPIO2) */
outb_p(0x30, WDT_EFER); /* select CR30 */
......@@ -311,7 +324,7 @@ wdt_init(void)
spin_lock_init(&io_lock);
printk(KERN_INFO "WDT driver for the Winbond(TM) W83627HF Super I/O chip initialising.\n");
printk(KERN_INFO "WDT driver for the Winbond(TM) W83627HF/THF Super I/O chip initialising.\n");
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);
......@@ -367,5 +380,5 @@ module_exit(wdt_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Pdraig Brady <P@draigBrady.com>");
MODULE_DESCRIPTION("w83627hf WDT driver");
MODULE_DESCRIPTION("w83627hf/thf WDT driver");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
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