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 31 * only upto 256 memory devices 32 */ 33 #define ACPI_MAX_RAM_SLOTS 256 34 35 /* from linux include/acpi/actype.h */ 36 /* Default ACPI register widths */ 37 38 #define ACPI_GPE_REGISTER_WIDTH 8 39 #define ACPI_PM1_REGISTER_WIDTH 16 40 #define ACPI_PM2_REGISTER_WIDTH 8 41 #define ACPI_PM_TIMER_WIDTH 32 42 43 /* PM Timer ticks per second (HZ) */ 44 #define PM_TIMER_FREQUENCY 3579545 45 46 47 /* ACPI fixed hardware registers */ 48 49 /* from linux/drivers/acpi/acpica/aclocal.h */ 50 /* Masks used to access the bit_registers */ 51 52 /* PM1x_STS */ 53 #define ACPI_BITMASK_TIMER_STATUS 0x0001 54 #define ACPI_BITMASK_BUS_MASTER_STATUS 0x0010 55 #define ACPI_BITMASK_GLOBAL_LOCK_STATUS 0x0020 56 #define ACPI_BITMASK_POWER_BUTTON_STATUS 0x0100 57 #define ACPI_BITMASK_SLEEP_BUTTON_STATUS 0x0200 58 #define ACPI_BITMASK_RT_CLOCK_STATUS 0x0400 59 #define ACPI_BITMASK_PCIEXP_WAKE_STATUS 0x4000 /* ACPI 3.0 */ 60 #define ACPI_BITMASK_WAKE_STATUS 0x8000 61 62 #define ACPI_BITMASK_ALL_FIXED_STATUS (\ 63 ACPI_BITMASK_TIMER_STATUS | \ 64 ACPI_BITMASK_BUS_MASTER_STATUS | \ 65 ACPI_BITMASK_GLOBAL_LOCK_STATUS | \ 66 ACPI_BITMASK_POWER_BUTTON_STATUS | \ 67 ACPI_BITMASK_SLEEP_BUTTON_STATUS | \ 68 ACPI_BITMASK_RT_CLOCK_STATUS | \ 69 ACPI_BITMASK_WAKE_STATUS) 70 71 /* PM1x_EN */ 72 #define ACPI_BITMASK_TIMER_ENABLE 0x0001 73 #define ACPI_BITMASK_GLOBAL_LOCK_ENABLE 0x0020 74 #define ACPI_BITMASK_POWER_BUTTON_ENABLE 0x0100 75 #define ACPI_BITMASK_SLEEP_BUTTON_ENABLE 0x0200 76 #define ACPI_BITMASK_RT_CLOCK_ENABLE 0x0400 77 #define ACPI_BITMASK_PCIEXP_WAKE_DISABLE 0x4000 /* ACPI 3.0 */ 78 79 #define ACPI_BITMASK_PM1_COMMON_ENABLED ( \ 80 ACPI_BITMASK_RT_CLOCK_ENABLE | \ 81 ACPI_BITMASK_POWER_BUTTON_ENABLE | \ 82 ACPI_BITMASK_GLOBAL_LOCK_ENABLE | \ 83 ACPI_BITMASK_TIMER_ENABLE) 84 85 /* PM1x_CNT */ 86 #define ACPI_BITMASK_SCI_ENABLE 0x0001 87 #define ACPI_BITMASK_BUS_MASTER_RLD 0x0002 88 #define ACPI_BITMASK_GLOBAL_LOCK_RELEASE 0x0004 89 #define ACPI_BITMASK_SLEEP_TYPE 0x1C00 90 #define ACPI_BITMASK_SLEEP_ENABLE 0x2000 91 92 /* PM2_CNT */ 93 #define ACPI_BITMASK_ARB_DISABLE 0x0001 94 95 /* structs */ 96 typedef struct ACPIPMTimer ACPIPMTimer; 97 typedef struct ACPIPM1EVT ACPIPM1EVT; 98 typedef struct ACPIPM1CNT ACPIPM1CNT; 99 typedef struct ACPIGPE ACPIGPE; 100 typedef struct ACPIREGS ACPIREGS; 101 102 typedef void (*acpi_update_sci_fn)(ACPIREGS *ar); 103 104 struct ACPIPMTimer { 105 QEMUTimer *timer; 106 MemoryRegion io; 107 int64_t overflow_time; 108 109 acpi_update_sci_fn update_sci; 110 }; 111 112 struct ACPIPM1EVT { 113 MemoryRegion io; 114 uint16_t sts; 115 uint16_t en; 116 acpi_update_sci_fn update_sci; 117 }; 118 119 struct ACPIPM1CNT { 120 MemoryRegion io; 121 uint16_t cnt; 122 uint8_t s4_val; 123 }; 124 125 struct ACPIGPE { 126 uint8_t len; 127 128 uint8_t *sts; 129 uint8_t *en; 130 }; 131 132 struct ACPIREGS { 133 ACPIPMTimer tmr; 134 ACPIGPE gpe; 135 struct { 136 ACPIPM1EVT evt; 137 ACPIPM1CNT cnt; 138 } pm1; 139 Notifier wakeup; 140 }; 141 142 /* PM_TMR */ 143 void acpi_pm_tmr_update(ACPIREGS *ar, bool enable); 144 void acpi_pm_tmr_calc_overflow_time(ACPIREGS *ar); 145 void acpi_pm_tmr_init(ACPIREGS *ar, acpi_update_sci_fn update_sci, 146 MemoryRegion *parent); 147 void acpi_pm_tmr_reset(ACPIREGS *ar); 148 149 #include "qemu/timer.h" 150 static inline int64_t acpi_pm_tmr_get_clock(void) 151 { 152 return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), PM_TIMER_FREQUENCY, 153 get_ticks_per_sec()); 154 } 155 156 /* PM1a_EVT: piix and ich9 don't implement PM1b. */ 157 uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar); 158 void acpi_pm1_evt_power_down(ACPIREGS *ar); 159 void acpi_pm1_evt_reset(ACPIREGS *ar); 160 void acpi_pm1_evt_init(ACPIREGS *ar, acpi_update_sci_fn update_sci, 161 MemoryRegion *parent); 162 163 /* PM1a_CNT: piix and ich9 don't implement PM1b CNT. */ 164 void acpi_pm1_cnt_init(ACPIREGS *ar, MemoryRegion *parent, uint8_t s4_val); 165 void acpi_pm1_cnt_update(ACPIREGS *ar, 166 bool sci_enable, bool sci_disable); 167 void acpi_pm1_cnt_reset(ACPIREGS *ar); 168 169 /* GPE0 */ 170 void acpi_gpe_init(ACPIREGS *ar, uint8_t len); 171 void acpi_gpe_reset(ACPIREGS *ar); 172 173 void acpi_gpe_ioport_writeb(ACPIREGS *ar, uint32_t addr, uint32_t val); 174 uint32_t acpi_gpe_ioport_readb(ACPIREGS *ar, uint32_t addr); 175 176 void acpi_update_sci(ACPIREGS *acpi_regs, qemu_irq irq); 177 178 /* acpi.c */ 179 extern int acpi_enabled; 180 extern char unsigned *acpi_tables; 181 extern size_t acpi_tables_len; 182 183 uint8_t *acpi_table_first(void); 184 uint8_t *acpi_table_next(uint8_t *current); 185 unsigned acpi_table_len(void *current); 186 void acpi_table_add(const QemuOpts *opts, Error **errp); 187 void acpi_table_add_builtin(const QemuOpts *opts, Error **errp); 188 189 #endif /* !QEMU_HW_ACPI_H */ 190