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
  10#ifndef HW_ACPI_TCO_H
  11#define HW_ACPI_TCO_H
  12
  13#include "exec/memory.h"
  14
  15/* As per ICH9 spec, the internal timer has an error of ~0.6s on every tick */
  16#define TCO_TICK_NSEC 600000000LL
  17
  18/* TCO I/O register offsets */
  19enum {
  20    TCO_RLD           = 0x00,
  21    TCO_DAT_IN        = 0x02,
  22    TCO_DAT_OUT       = 0x03,
  23    TCO1_STS          = 0x04,
  24    TCO2_STS          = 0x06,
  25    TCO1_CNT          = 0x08,
  26    TCO2_CNT          = 0x0a,
  27    TCO_MESSAGE1      = 0x0c,
  28    TCO_MESSAGE2      = 0x0d,
  29    TCO_WDCNT         = 0x0e,
  30    SW_IRQ_GEN        = 0x10,
  31    TCO_TMR           = 0x12,
  32};
  33
  34/* TCO I/O register control/status bits */
  35enum {
  36    SW_TCO_SMI           = 1 << 1,
  37    TCO_INT_STS          = 1 << 2,
  38    TCO_LOCK             = 1 << 12,
  39    TCO_TMR_HLT          = 1 << 11,
  40    TCO_TIMEOUT          = 1 << 3,
  41    TCO_SECOND_TO_STS    = 1 << 1,
  42    TCO_BOOT_STS         = 1 << 2,
  43};
  44
  45/* TCO I/O registers mask bits */
  46enum {
  47    TCO_RLD_MASK     = 0x3ff,
  48    TCO1_STS_MASK    = 0xe870,
  49    TCO2_STS_MASK    = 0xfff8,
  50    TCO1_CNT_MASK    = 0xfeff,
  51    TCO_TMR_MASK     = 0x3ff,
  52};
  53
  54typedef struct TCOIORegs {
  55    struct {
  56        uint16_t rld;
  57        uint8_t din;
  58        uint8_t dout;
  59        uint16_t sts1;
  60        uint16_t sts2;
  61        uint16_t cnt1;
  62        uint16_t cnt2;
  63        uint8_t msg1;
  64        uint8_t msg2;
  65        uint8_t wdcnt;
  66        uint16_t tmr;
  67    } tco;
  68    uint8_t sw_irq_gen;
  69
  70    QEMUTimer *tco_timer;
  71    int64_t expire_time;
  72    uint8_t timeouts_no;
  73
  74    MemoryRegion io;
  75} TCOIORegs;
  76
  77/* tco.c */
  78void acpi_pm_tco_init(TCOIORegs *tr, MemoryRegion *parent);
  79
  80extern const VMStateDescription vmstate_tco_io_sts;
  81
  82#endif /* HW_ACPI_TCO_H */
  83