| /* 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 0x03 |
| #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 |
