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 */ 189