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| author | Priyanka Gupta <priyankag@google.com> | 2010-10-25 17:58:04 -0700 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2011-01-12 13:51:16 +0000 |
| commit | 15e28bf130081a574192fb934b832ac7d07739f7 (patch) | |
| tree | b4aeef95f06f6c60697ae078e589034c8b198ff5 /drivers/watchdog/sp5100_tco.h | |
| parent | e13752a1de02044bfda352cbc834e3c9541f148b (diff) | |
| download | linux-15e28bf130081a574192fb934b832ac7d07739f7.tar.gz linux-15e28bf130081a574192fb934b832ac7d07739f7.tar.bz2 linux-15e28bf130081a574192fb934b832ac7d07739f7.zip | |
watchdog: Add support for sp5100 chipset TCO
This driver adds /dev/watchdog support for the AMD sp5100 aka SB7x0 chipsets.
It follows the same conventions found in other /dev/watchdog drivers.
Signed-off-by: Priyanka Gupta <priyankag@google.com>
Signed-off-by: Mike Waychison <mikew@google.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/sp5100_tco.h')
| -rw-r--r-- | drivers/watchdog/sp5100_tco.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/watchdog/sp5100_tco.h b/drivers/watchdog/sp5100_tco.h new file mode 100644 index 000000000000..a5a16cc90a34 --- /dev/null +++ b/drivers/watchdog/sp5100_tco.h @@ -0,0 +1,41 @@ +/* + * sp5100_tco: TCO timer driver for sp5100 chipsets. + * + * (c) Copyright 2009 Google Inc., All Rights Reserved. + * + * TCO timer driver for sp5100 chipsets + */ + +/* + * Some address definitions for the Watchdog + */ + +#define SP5100_WDT_MEM_MAP_SIZE 0x08 +#define SP5100_WDT_CONTROL(base) ((base) + 0x00) /* Watchdog Control */ +#define SP5100_WDT_COUNT(base) ((base) + 0x04) /* Watchdog Count */ + +#define SP5100_WDT_START_STOP_BIT 1 +#define SP5100_WDT_TRIGGER_BIT (1 << 7) + +#define SP5100_PCI_WATCHDOG_MISC_REG 0x41 +#define SP5100_PCI_WATCHDOG_DECODE_EN (1 << 3) + +#define SP5100_PM_IOPORTS_SIZE 0x02 + +/* These two IO registers are hardcoded and there doesn't seem to be a way to + * read them from a register. + */ +#define SP5100_IO_PM_INDEX_REG 0xCD6 +#define SP5100_IO_PM_DATA_REG 0xCD7 + +#define SP5100_PM_WATCHDOG_CONTROL 0x69 +#define SP5100_PM_WATCHDOG_BASE0 0x6C +#define SP5100_PM_WATCHDOG_BASE1 0x6D +#define SP5100_PM_WATCHDOG_BASE2 0x6E +#define SP5100_PM_WATCHDOG_BASE3 0x6F + +#define SP5100_PM_WATCHDOG_FIRED (1 << 1) +#define SP5100_PM_WATCHDOG_ACTION_RESET (1 << 2) + +#define SP5100_PM_WATCHDOG_DISABLE 1 +#define SP5100_PM_WATCHDOG_SECOND_RES (3 << 1) |