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     MemoryRegion io;
  88     int64_t overflow_time;
  89
  90     acpi_update_sci_fn update_sci;
  91 };
  92
  93 struct ACPIPM1EVT {
  94     MemoryRegion io;
  95     uint16_t sts;
  96     uint16_t en;
  97     acpi_update_sci_fn update_sci;
  98 };
  99
 100 struct ACPIPM1CNT {
 101     MemoryRegion io;
 102     uint16_t cnt;
 103     uint8_t s4_val;
 104 };
 105
 106 struct ACPIGPE {
 107     uint8_t len;
 108
 109     uint8_t *sts;
 110     uint8_t *en;
 111 };
 112
 113 struct ACPIREGS {
 114     ACPIPMTimer     tmr;
 115     ACPIGPE         gpe;
 116     struct {
 117         ACPIPM1EVT  evt;
 118         ACPIPM1CNT  cnt;
 119     } pm1;
 120     Notifier wakeup;
 121 };
 122
 123 /* PM_TMR */
 124 void acpi_pm_tmr_update(ACPIREGS *ar, bool enable);
 125 void acpi_pm_tmr_calc_overflow_time(ACPIREGS *ar);
 126 void acpi_pm_tmr_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
 127                       MemoryRegion *parent);
 128 void acpi_pm_tmr_reset(ACPIREGS *ar);
 129
 130 #include "qemu/timer.h"
 131 static inline int64_t acpi_pm_tmr_get_clock(void)
 132 {
 133     return muldiv64(qemu_get_clock_ns(vm_clock), PM_TIMER_FREQUENCY,
 134                     get_ticks_per_sec());
 135 }
 136
 137 /* PM1a_EVT: piix and ich9 don't implement PM1b. */
 138 uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar);
 139 void acpi_pm1_evt_power_down(ACPIREGS *ar);
 140 void acpi_pm1_evt_reset(ACPIREGS *ar);
 141 void acpi_pm1_evt_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
 142                        MemoryRegion *parent);
 143
 144 /* PM1a_CNT: piix and ich9 don't implement PM1b CNT. */
 145 void acpi_pm1_cnt_init(ACPIREGS *ar, MemoryRegion *parent);
 146 void acpi_pm1_cnt_update(ACPIREGS *ar,
 147                          bool sci_enable, bool sci_disable);
 148 void acpi_pm1_cnt_reset(ACPIREGS *ar);
 149
 150 /* GPE0 */
 151 void acpi_gpe_init(ACPIREGS *ar, uint8_t len);
 152 void acpi_gpe_reset(ACPIREGS *ar);
 153
 154 void acpi_gpe_ioport_writeb(ACPIREGS *ar, uint32_t addr, uint32_t val);
 155 uint32_t acpi_gpe_ioport_readb(ACPIREGS *ar, uint32_t addr);
 156
 157 #endif /* !QEMU_HW_ACPI_H */