LXR qemu/include/hw/acpi/tco.h

   1/*
   2 * QEMU ICH9 TCO emulation
   3 *
   4 * Copyright (c) 2015 Paulo Alcantara <pcacjr@zytor.com>
   5 *
   6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7 * See the COPYING file in the top-level directory.
   8 */
   9#ifndef HW_ACPI_TCO_H
  10#define HW_ACPI_TCO_H
  11
  12#include "qemu-common.h"
  13
  14/* As per ICH9 spec, the internal timer has an error of ~0.6s on every tick */
  15#define TCO_TICK_NSEC 600000000LL
  16
  17/* TCO I/O register offsets */
  18enum {
  19    TCO_RLD           = 0x00,
  20    TCO_DAT_IN        = 0x02,
  21    TCO_DAT_OUT       = 0x03,
  22    TCO1_STS          = 0x04,
  23    TCO2_STS          = 0x06,
  24    TCO1_CNT          = 0x08,
  25    TCO2_CNT          = 0x0a,
  26    TCO_MESSAGE1      = 0x0c,
  27    TCO_MESSAGE2      = 0x0d,
  28    TCO_WDCNT         = 0x0e,
  29    SW_IRQ_GEN        = 0x10,
  30    TCO_TMR           = 0x12,
  31};
  32
  33/* TCO I/O register control/status bits */
  34enum {
  35    SW_TCO_SMI           = 1 << 1,
  36    TCO_INT_STS          = 1 << 2,
  37    TCO_LOCK             = 1 << 12,
  38    TCO_TMR_HLT          = 1 << 11,
  39    TCO_TIMEOUT          = 1 << 3,
  40    TCO_SECOND_TO_STS    = 1 << 1,
  41    TCO_BOOT_STS         = 1 << 2,
  42};
  43
  44/* TCO I/O registers mask bits */
  45enum {
  46    TCO_RLD_MASK     = 0x3ff,
  47    TCO1_STS_MASK    = 0xe870,
  48    TCO2_STS_MASK    = 0xfff8,
  49    TCO1_CNT_MASK    = 0xfeff,
  50    TCO_TMR_MASK     = 0x3ff,
  51};
  52
  53typedef struct TCOIORegs {
  54    struct {
  55        uint16_t rld;
  56        uint8_t din;
  57        uint8_t dout;
  58        uint16_t sts1;
  59        uint16_t sts2;
  60        uint16_t cnt1;
  61        uint16_t cnt2;
  62        uint8_t msg1;
  63        uint8_t msg2;
  64        uint8_t wdcnt;
  65        uint16_t tmr;
  66    } tco;
  67    uint8_t sw_irq_gen;
  68
  69    QEMUTimer *tco_timer;
  70    int64_t expire_time;
  71    uint8_t timeouts_no;
  72
  73    MemoryRegion io;
  74} TCOIORegs;
  75
  76/* tco.c */
  77void acpi_pm_tco_init(TCOIORegs *tr, MemoryRegion *parent);
  78
  79extern const VMStateDescription vmstate_tco_io_sts;
  80
  81#endif /* HW_ACPI_TCO_H */
  82