include/hw/acpi/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 #include "qapi/error.h"
  23 #include "qemu/typedefs.h"
  24 #include "qemu/notify.h"
  25 #include "qemu/option.h"
  26 #include "exec/memory.h"
  27 #include "hw/irq.h"
  28
  29 /*
  30  * current device naming scheme supports up to 256 memory devices
  31  */
  32 #define ACPI_MAX_RAM_SLOTS 256
  33
  34 /* from linux include/acpi/actype.h */
  35 /* Default ACPI register widths */
  36
  37 #define ACPI_GPE_REGISTER_WIDTH         8
  38 #define ACPI_PM1_REGISTER_WIDTH         16
  39 #define ACPI_PM2_REGISTER_WIDTH         8
  40 #define ACPI_PM_TIMER_WIDTH             32
  41
  42 /* PM Timer ticks per second (HZ) */
  43 #define PM_TIMER_FREQUENCY  3579545
  44
  45
  46 /* ACPI fixed hardware registers */
  47
  48 /* from linux/drivers/acpi/acpica/aclocal.h */
  49 /* Masks used to access the bit_registers */
  50
  51 /* PM1x_STS */
  52 #define ACPI_BITMASK_TIMER_STATUS               0x0001
  53 #define ACPI_BITMASK_BUS_MASTER_STATUS          0x0010
  54 #define ACPI_BITMASK_GLOBAL_LOCK_STATUS         0x0020
  55 #define ACPI_BITMASK_POWER_BUTTON_STATUS        0x0100
  56 #define ACPI_BITMASK_SLEEP_BUTTON_STATUS        0x0200
  57 #define ACPI_BITMASK_RT_CLOCK_STATUS            0x0400
  58 #define ACPI_BITMASK_PCIEXP_WAKE_STATUS         0x4000  /* ACPI 3.0 */
  59 #define ACPI_BITMASK_WAKE_STATUS                0x8000
  60
  61 #define ACPI_BITMASK_ALL_FIXED_STATUS           (\
  62         ACPI_BITMASK_TIMER_STATUS          | \
  63         ACPI_BITMASK_BUS_MASTER_STATUS     | \
  64         ACPI_BITMASK_GLOBAL_LOCK_STATUS    | \
  65         ACPI_BITMASK_POWER_BUTTON_STATUS   | \
  66         ACPI_BITMASK_SLEEP_BUTTON_STATUS   | \
  67         ACPI_BITMASK_RT_CLOCK_STATUS       | \
  68         ACPI_BITMASK_WAKE_STATUS)
  69
  70 /* PM1x_EN */
  71 #define ACPI_BITMASK_TIMER_ENABLE               0x0001
  72 #define ACPI_BITMASK_GLOBAL_LOCK_ENABLE         0x0020
  73 #define ACPI_BITMASK_POWER_BUTTON_ENABLE        0x0100
  74 #define ACPI_BITMASK_SLEEP_BUTTON_ENABLE        0x0200
  75 #define ACPI_BITMASK_RT_CLOCK_ENABLE            0x0400
  76 #define ACPI_BITMASK_PCIEXP_WAKE_DISABLE        0x4000  /* ACPI 3.0 */
  77
  78 #define ACPI_BITMASK_PM1_COMMON_ENABLED         ( \
  79         ACPI_BITMASK_RT_CLOCK_ENABLE        | \
  80         ACPI_BITMASK_POWER_BUTTON_ENABLE    | \
  81         ACPI_BITMASK_GLOBAL_LOCK_ENABLE     | \
  82         ACPI_BITMASK_TIMER_ENABLE)
  83
  84 /* PM1x_CNT */
  85 #define ACPI_BITMASK_SCI_ENABLE                 0x0001
  86 #define ACPI_BITMASK_BUS_MASTER_RLD             0x0002
  87 #define ACPI_BITMASK_GLOBAL_LOCK_RELEASE        0x0004
  88 #define ACPI_BITMASK_SLEEP_TYPE                 0x1C00
  89 #define ACPI_BITMASK_SLEEP_ENABLE               0x2000
  90
  91 /* PM2_CNT */
  92 #define ACPI_BITMASK_ARB_DISABLE                0x0001
  93
  94 /* structs */
  95 typedef struct ACPIPMTimer ACPIPMTimer;
  96 typedef struct ACPIPM1EVT ACPIPM1EVT;
  97 typedef struct ACPIPM1CNT ACPIPM1CNT;
  98 typedef struct ACPIGPE ACPIGPE;
  99 typedef struct ACPIREGS ACPIREGS;
 100
 101 typedef void (*acpi_update_sci_fn)(ACPIREGS *ar);
 102
 103 struct ACPIPMTimer {
 104     QEMUTimer *timer;
 105     MemoryRegion io;
 106     int64_t overflow_time;
 107
 108     acpi_update_sci_fn update_sci;
 109 };
 110
 111 struct ACPIPM1EVT {
 112     MemoryRegion io;
 113     uint16_t sts;
 114     uint16_t en;
 115     acpi_update_sci_fn update_sci;
 116 };
 117
 118 struct ACPIPM1CNT {
 119     MemoryRegion io;
 120     uint16_t cnt;
 121     uint8_t s4_val;
 122 };
 123
 124 struct ACPIGPE {
 125     uint8_t len;
 126
 127     uint8_t *sts;
 128     uint8_t *en;
 129 };
 130
 131 struct ACPIREGS {
 132     ACPIPMTimer     tmr;
 133     ACPIGPE         gpe;
 134     struct {
 135         ACPIPM1EVT  evt;
 136         ACPIPM1CNT  cnt;
 137     } pm1;
 138     Notifier wakeup;
 139 };
 140
 141 /* PM_TMR */
 142 void acpi_pm_tmr_update(ACPIREGS *ar, bool enable);
 143 void acpi_pm_tmr_calc_overflow_time(ACPIREGS *ar);
 144 void acpi_pm_tmr_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
 145                       MemoryRegion *parent);
 146 void acpi_pm_tmr_reset(ACPIREGS *ar);
 147
 148 #include "qemu/timer.h"
 149 static inline int64_t acpi_pm_tmr_get_clock(void)
 150 {
 151     return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), PM_TIMER_FREQUENCY,
 152                     get_ticks_per_sec());
 153 }
 154
 155 /* PM1a_EVT: piix and ich9 don't implement PM1b. */
 156 uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar);
 157 void acpi_pm1_evt_power_down(ACPIREGS *ar);
 158 void acpi_pm1_evt_reset(ACPIREGS *ar);
 159 void acpi_pm1_evt_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
 160                        MemoryRegion *parent);
 161
 162 /* PM1a_CNT: piix and ich9 don't implement PM1b CNT. */
 163 void acpi_pm1_cnt_init(ACPIREGS *ar, MemoryRegion *parent, uint8_t s4_val);
 164 void acpi_pm1_cnt_update(ACPIREGS *ar,
 165                          bool sci_enable, bool sci_disable);
 166 void acpi_pm1_cnt_reset(ACPIREGS *ar);
 167
 168 /* GPE0 */
 169 void acpi_gpe_init(ACPIREGS *ar, uint8_t len);
 170 void acpi_gpe_reset(ACPIREGS *ar);
 171
 172 void acpi_gpe_ioport_writeb(ACPIREGS *ar, uint32_t addr, uint32_t val);
 173 uint32_t acpi_gpe_ioport_readb(ACPIREGS *ar, uint32_t addr);
 174
 175 void acpi_update_sci(ACPIREGS *acpi_regs, qemu_irq irq);
 176
 177 /* acpi.c */
 178 extern int acpi_enabled;
 179 extern char unsigned *acpi_tables;
 180 extern size_t acpi_tables_len;
 181
 182 uint8_t *acpi_table_first(void);
 183 uint8_t *acpi_table_next(uint8_t *current);
 184 unsigned acpi_table_len(void *current);
 185 void acpi_table_add(const QemuOpts *opts, Error **errp);
 186 void acpi_table_add_builtin(const QemuOpts *opts, Error **errp);
 187
 188 #endif /* !QEMU_HW_ACPI_H */