hw/acpi.h

   1 #ifndef QEMU_HW_ACPI_H
   2 #define QEMU_HW_ACPI_H
   3 /*
   4  *  Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
   5  *                     VA Linux Systems Japan K.K.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, see
  19  * <http://www.gnu.org/licenses/>.
  20  */
  21
  22 /* from linux include/acpi/actype.h */
  23 /* Default ACPI register widths */
  24
  25 #define ACPI_GPE_REGISTER_WIDTH         8
  26 #define ACPI_PM1_REGISTER_WIDTH         16
  27 #define ACPI_PM2_REGISTER_WIDTH         8
  28 #define ACPI_PM_TIMER_WIDTH             32
  29
  30 /* PM Timer ticks per second (HZ) */
  31 #define PM_TIMER_FREQUENCY  3579545
  32
  33
  34 /* ACPI fixed hardware registers */
  35
  36 /* from linux/drivers/acpi/acpica/aclocal.h */
  37 /* Masks used to access the bit_registers */
  38
  39 /* PM1x_STS */
  40 #define ACPI_BITMASK_TIMER_STATUS               0x0001
  41 #define ACPI_BITMASK_BUS_MASTER_STATUS          0x0010
  42 #define ACPI_BITMASK_GLOBAL_LOCK_STATUS         0x0020
  43 #define ACPI_BITMASK_POWER_BUTTON_STATUS        0x0100
  44 #define ACPI_BITMASK_SLEEP_BUTTON_STATUS        0x0200
  45 #define ACPI_BITMASK_RT_CLOCK_STATUS            0x0400
  46 #define ACPI_BITMASK_PCIEXP_WAKE_STATUS         0x4000  /* ACPI 3.0 */
  47 #define ACPI_BITMASK_WAKE_STATUS                0x8000
  48
  49 #define ACPI_BITMASK_ALL_FIXED_STATUS           (\
  50         ACPI_BITMASK_TIMER_STATUS          | \
  51         ACPI_BITMASK_BUS_MASTER_STATUS     | \
  52         ACPI_BITMASK_GLOBAL_LOCK_STATUS    | \
  53         ACPI_BITMASK_POWER_BUTTON_STATUS   | \
  54         ACPI_BITMASK_SLEEP_BUTTON_STATUS   | \
  55         ACPI_BITMASK_RT_CLOCK_STATUS       | \
  56         ACPI_BITMASK_WAKE_STATUS)
  57
  58 /* PM1x_EN */
  59 #define ACPI_BITMASK_TIMER_ENABLE               0x0001
  60 #define ACPI_BITMASK_GLOBAL_LOCK_ENABLE         0x0020
  61 #define ACPI_BITMASK_POWER_BUTTON_ENABLE        0x0100
  62 #define ACPI_BITMASK_SLEEP_BUTTON_ENABLE        0x0200
  63 #define ACPI_BITMASK_RT_CLOCK_ENABLE            0x0400
  64 #define ACPI_BITMASK_PCIEXP_WAKE_DISABLE        0x4000  /* ACPI 3.0 */
  65
  66 /* PM1x_CNT */
  67 #define ACPI_BITMASK_SCI_ENABLE                 0x0001
  68 #define ACPI_BITMASK_BUS_MASTER_RLD             0x0002
  69 #define ACPI_BITMASK_GLOBAL_LOCK_RELEASE        0x0004
  70 #define ACPI_BITMASK_SLEEP_TYPE                 0x1C00
  71 #define ACPI_BITMASK_SLEEP_ENABLE               0x2000
  72
  73 /* PM2_CNT */
  74 #define ACPI_BITMASK_ARB_DISABLE                0x0001
  75
  76 /* structs */
  77 typedef struct ACPIPMTimer ACPIPMTimer;
  78 typedef struct ACPIPM1EVT ACPIPM1EVT;
  79 typedef struct ACPIPM1CNT ACPIPM1CNT;
  80 typedef struct ACPIGPE ACPIGPE;
  81 typedef struct ACPIREGS ACPIREGS;
  82
  83 typedef void (*acpi_update_sci_fn)(ACPIREGS *ar);
  84
  85 struct ACPIPMTimer {
  86     QEMUTimer *timer;
  87     int64_t overflow_time;
  88
  89     acpi_update_sci_fn update_sci;
  90 };
  91
  92 struct ACPIPM1EVT {
  93     uint16_t sts;
  94     uint16_t en;
  95 };
  96
  97 struct ACPIPM1CNT {
  98     uint16_t cnt;
  99 };
 100
 101 struct ACPIGPE {
 102     uint32_t blk;
 103     uint8_t len;
 104
 105     uint8_t *sts;
 106     uint8_t *en;
 107 };
 108
 109 struct ACPIREGS {
 110     ACPIPMTimer     tmr;
 111     ACPIGPE         gpe;
 112     struct {
 113         ACPIPM1EVT  evt;
 114         ACPIPM1CNT  cnt;
 115     } pm1;
 116     Notifier wakeup;
 117 };
 118
 119 /* PM_TMR */
 120 void acpi_pm_tmr_update(ACPIREGS *ar, bool enable);
 121 void acpi_pm_tmr_calc_overflow_time(ACPIREGS *ar);
 122 uint32_t acpi_pm_tmr_get(ACPIREGS *ar);
 123 void acpi_pm_tmr_init(ACPIREGS *ar, acpi_update_sci_fn update_sci);
 124 void acpi_pm_tmr_reset(ACPIREGS *ar);
 125
 126 #include "qemu-timer.h"
 127 static inline int64_t acpi_pm_tmr_get_clock(void)
 128 {
 129     return muldiv64(qemu_get_clock_ns(vm_clock), PM_TIMER_FREQUENCY,
 130                     get_ticks_per_sec());
 131 }
 132
 133 /* PM1a_EVT: piix and ich9 don't implement PM1b. */
 134 uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar);
 135 void acpi_pm1_evt_write_sts(ACPIREGS *ar, uint16_t val);
 136 void acpi_pm1_evt_write_en(ACPIREGS *ar, uint16_t val);
 137 void acpi_pm1_evt_power_down(ACPIREGS *ar);
 138 void acpi_pm1_evt_reset(ACPIREGS *ar);
 139
 140 /* PM1a_CNT: piix and ich9 don't implement PM1b CNT. */
 141 void acpi_pm1_cnt_init(ACPIREGS *ar);
 142 void acpi_pm1_cnt_write(ACPIREGS *ar, uint16_t val);
 143 void acpi_pm1_cnt_update(ACPIREGS *ar,
 144                          bool sci_enable, bool sci_disable);
 145 void acpi_pm1_cnt_reset(ACPIREGS *ar);
 146
 147 /* GPE0 */
 148 void acpi_gpe_init(ACPIREGS *ar, uint8_t len);
 149 void acpi_gpe_blk(ACPIREGS *ar, uint32_t blk);
 150 void acpi_gpe_reset(ACPIREGS *ar);
 151
 152 void acpi_gpe_ioport_writeb(ACPIREGS *ar, uint32_t addr, uint32_t val);
 153 uint32_t acpi_gpe_ioport_readb(ACPIREGS *ar, uint32_t addr);
 154
 155 #endif /* !QEMU_HW_ACPI_H */