/* SPDX-License-Identifier: GPL-2.0 */ /* * sp5100_tco: TCO timer driver for sp5100 chipsets. * * (c) Copyright 2009 Google Inc., All Rights Reserved. * * TCO timer driver for sp5100 chipsets */ #include <linux/bitops.h> /* * 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 BIT(0) #define SP5100_WDT_FIRED BIT(1) #define SP5100_WDT_ACTION_RESET BIT(2) #define SP5100_WDT_DISABLED BIT(3) #define SP5100_WDT_TRIGGER_BIT BIT(7) #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. */ /* For SP5100/SB7x0/SB8x0 chipset */ #define SP5100_IO_PM_INDEX_REG 0xCD6 #define SP5100_IO_PM_DATA_REG 0xCD7 /* For SP5100/SB7x0 chipset */ #define SP5100_SB_RESOURCE_MMIO_BASE 0x9C #define SP5100_PM_WATCHDOG_CONTROL 0x69 #define SP5100_PM_WATCHDOG_BASE 0x6C #define SP5100_PCI_WATCHDOG_MISC_REG 0x41 #define SP5100_PCI_WATCHDOG_DECODE_EN BIT(3) #define SP5100_PM_WATCHDOG_DISABLE ((u8)BIT(0)) #define SP5100_PM_WATCHDOG_SECOND_RES GENMASK(2, 1) #define SP5100_DEVNAME "SP5100 TCO" /* For SB8x0(or later) chipset */ #define SB800_PM_ACPI_MMIO_EN 0x24 #define SB800_PM_WATCHDOG_CONTROL 0x48 #define SB800_PM_WATCHDOG_BASE 0x48 #define SB800_PM_WATCHDOG_CONFIG 0x4C #define SB800_PCI_WATCHDOG_DECODE_EN BIT(0) #define SB800_PM_WATCHDOG_DISABLE ((u8)BIT(1)) #define SB800_PM_WATCHDOG_SECOND_RES GENMASK(1, 0) #define SB800_ACPI_MMIO_DECODE_EN BIT(0) #define SB800_ACPI_MMIO_SEL BIT(1) #define SB800_PM_WDT_MMIO_OFFSET 0xB00 #define SB800_DEVNAME "SB800 TCO" /* For recent chips with embedded FCH (rev 40+) */ #define EFCH_PM_DECODEEN 0x00 #define EFCH_PM_DECODEEN_WDT_TMREN BIT(7) #define EFCH_PM_DECODEEN3 0x00 #define EFCH_PM_DECODEEN_SECOND_RES GENMASK(1, 0) #define EFCH_PM_WATCHDOG_DISABLE ((u8)GENMASK(3, 2)) /* WDT MMIO if enabled with PM00_DECODEEN_WDT_TMREN */ #define EFCH_PM_WDT_ADDR 0xfeb00000 #define EFCH_PM_ISACONTROL 0x04 #define EFCH_PM_ISACONTROL_MMIOEN BIT(1) #define EFCH_PM_ACPI_MMIO_ADDR 0xfed80000 #define EFCH_PM_ACPI_MMIO_WDT_OFFSET 0x00000b00