mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-11-19 08:05:27 +08:00
15e28bf130
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>
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
/*
|
|
* 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)
|