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