drivers/watchdog/sp5100_tco.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *      sp5100_tco:     TCO timer driver for sp5100 chipsets.
   4  *
   5  *      (c) Copyright 2009 Google Inc., All Rights Reserved.
   6  *
   7  *      TCO timer driver for sp5100 chipsets
   8  */
   9
  10 #include <linux/bitops.h>
  11
  12 /*
  13  * Some address definitions for the Watchdog
  14  */
  15 #define SP5100_WDT_MEM_MAP_SIZE         0x08
  16 #define SP5100_WDT_CONTROL(base)        ((base) + 0x00) /* Watchdog Control */
  17 #define SP5100_WDT_COUNT(base)          ((base) + 0x04) /* Watchdog Count */
  18
  19 #define SP5100_WDT_START_STOP_BIT       BIT(0)
  20 #define SP5100_WDT_FIRED                BIT(1)
  21 #define SP5100_WDT_ACTION_RESET         BIT(2)
  22 #define SP5100_WDT_DISABLED             BIT(3)
  23 #define SP5100_WDT_TRIGGER_BIT          BIT(7)
  24
  25 #define SP5100_PM_IOPORTS_SIZE          0x02
  26
  27 /*
  28  * These two IO registers are hardcoded and there doesn't seem to be a way to
  29  * read them from a register.
  30  */
  31
  32 /*  For SP5100/SB7x0/SB8x0 chipset */
  33 #define SP5100_IO_PM_INDEX_REG          0xCD6
  34 #define SP5100_IO_PM_DATA_REG           0xCD7
  35
  36 /* For SP5100/SB7x0 chipset */
  37 #define SP5100_SB_RESOURCE_MMIO_BASE    0x9C
  38
  39 #define SP5100_PM_WATCHDOG_CONTROL      0x69
  40 #define SP5100_PM_WATCHDOG_BASE         0x6C
  41
  42 #define SP5100_PCI_WATCHDOG_MISC_REG    0x41
  43 #define SP5100_PCI_WATCHDOG_DECODE_EN   BIT(3)
  44
  45 #define SP5100_PM_WATCHDOG_DISABLE      ((u8)BIT(0))
  46 #define SP5100_PM_WATCHDOG_SECOND_RES   GENMASK(2, 1)
  47
  48 #define SP5100_DEVNAME                  "SP5100 TCO"
  49
  50 /*  For SB8x0(or later) chipset */
  51 #define SB800_PM_ACPI_MMIO_EN           0x24
  52 #define SB800_PM_WATCHDOG_CONTROL       0x48
  53 #define SB800_PM_WATCHDOG_BASE          0x48
  54 #define SB800_PM_WATCHDOG_CONFIG        0x4C
  55
  56 #define SB800_PCI_WATCHDOG_DECODE_EN    BIT(0)
  57 #define SB800_PM_WATCHDOG_DISABLE       ((u8)BIT(1))
  58 #define SB800_PM_WATCHDOG_SECOND_RES    GENMASK(1, 0)
  59 #define SB800_ACPI_MMIO_DECODE_EN       BIT(0)
  60 #define SB800_ACPI_MMIO_SEL             BIT(1)
  61
  62 #define SB800_PM_WDT_MMIO_OFFSET        0xB00
  63
  64 #define SB800_DEVNAME                   "SB800 TCO"
  65
  66 /* For recent chips with embedded FCH (rev 40+) */
  67
  68 #define EFCH_PM_DECODEEN                0x00
  69
  70 #define EFCH_PM_DECODEEN_WDT_TMREN      BIT(7)
  71
  72
  73 #define EFCH_PM_DECODEEN3               0x03
  74 #define EFCH_PM_DECODEEN_SECOND_RES     GENMASK(1, 0)
  75 #define EFCH_PM_WATCHDOG_DISABLE        ((u8)GENMASK(3, 2))
  76
  77 /* WDT MMIO if enabled with PM00_DECODEEN_WDT_TMREN */
  78 #define EFCH_PM_WDT_ADDR                0xfeb00000
  79
  80 #define EFCH_PM_ISACONTROL              0x04
  81
  82 #define EFCH_PM_ISACONTROL_MMIOEN       BIT(1)
  83
  84 #define EFCH_PM_ACPI_MMIO_ADDR          0xfed80000
  85 #define EFCH_PM_ACPI_MMIO_WDT_OFFSET    0x00000b00