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#pragma once
#include <stdint.h>
#ifndef ACPI_INTERNAL
#error "Do not include <sys/acpi.h>, only use <acpi.h>"
#endif
struct acpi_header {
uint32_t signature;
uint32_t length;
uint8_t revision;
uint8_t checksum;
uint8_t oem_id[6];
uint8_t oem_table_id[8];
uint32_t oem_revision;
uint32_t creator_id;
uint32_t creator_revision;
} __attribute__((packed));
// root system descriptor pointer
// ACPI 1.0
struct rsdp {
uint8_t signature[8];
uint8_t checksum;
uint8_t oemid[6];
uint8_t revision;
uint32_t rsdt_addr;
} __attribute__((packed));
// eXtended system descriptor pointer
// ACPI 2.0
struct xsdp {
char signature[8];
uint8_t checksum;
char oemid[6];
uint8_t revision;
uint32_t rsdt_addr;
uint32_t length;
uint64_t xsdt_addr;
uint8_t extendeid_checksum;
uint8_t reserved[3];
} __attribute__((packed));
// root system descriptor table
// ACPI 1.0
struct rsdt {
struct acpi_header h;
uint32_t sdt_pointers[];
} __attribute__((packed));
// eXtended system descriptor table
// ACPI 2.0
struct xsdt {
struct acpi_header h;
uint64_t sdt_pointers[];
} __attribute__((packed));
// generic address structure
struct gas {
uint8_t address_space;
uint8_t bit_width;
uint8_t bit_offset;
uint8_t access_size;
uint64_t address;
};
// differentiated system description table
struct dsdt {
struct acpi_header h;
char s5_addr[];
} __attribute__((packed));
struct apic {
struct acpi_header h;
// todo
} __attribute__((packed));
struct hept {
struct acpi_header h;
// todo
} __attribute__((packed));
struct waet {
struct acpi_header h;
// todo
} __attribute__((packed));
// fixed acpi description table
struct fadt {
struct acpi_header h;
uint32_t firmware_ctrl;
uint32_t dsdt;
// field used in ACPI 1.0; no longer in use, for compatibility only
uint8_t reserved;
uint8_t preferred_power_management_profile;
uint16_t sci_interrupt;
uint32_t smi_command_port;
uint8_t acpi_enable;
uint8_t acpi_disable;
uint8_t s4bios_req;
uint8_t pstate_control;
uint32_t pm1_a_event_block;
uint32_t pm1_b_event_block;
uint32_t pm1_a_control_block;
uint32_t pm1_b_control_block;
uint32_t pm2_control_block;
uint32_t pm_timer_block;
uint32_t gpe0_block;
uint32_t gpe1_block;
uint8_t pm1_event_length;
uint8_t pm1_control_length;
uint8_t pm2_control_length;
uint8_t pm_timer_length;
uint8_t gpe0_length;
uint8_t gpe1_length;
uint8_t gpe1_base;
uint8_t cstate_control;
uint16_t worst_c2_latency;
uint16_t worst_c3_latency;
uint16_t flush_size;
uint16_t flush_stride;
uint8_t duty_offset;
uint8_t duty_width;
uint8_t day_alarm;
uint8_t month_alarm;
uint8_t century;
// reserved in ACPI 1.0; used since ACPI 2.0+
uint16_t boot_architecture_flags;
uint8_t reserved_2;
uint32_t flags;
// 12 byte structure; see below for details
struct gas reset_reg;
uint8_t reset_value;
uint8_t reserved_3[3];
// 64bit pointers - Available on ACPI 2.0+
uint64_t x_firmware_control;
uint64_t x_dsdt;
struct gas x_pm1_a_event_block;
struct gas x_pm1_b_event_block;
struct gas x_pm1_a_control_block;
struct gas x_pm1_b_control_block;
struct gas x_pm2_control_block;
struct gas x_pm_timer_block;
struct gas x_gpe0_block;
struct gas x_gpe1_block;
} __attribute__((packed));
struct acpi_state {
union {
struct xsdt *xsdt;
struct rsdt *rsdt;
} sdt;
struct fadt *fadt;
struct dsdt *dsdt;
struct apic *apic;
struct hept *hept;
struct waet *waet;
uint8_t version;
uint16_t SLP_TYPa;
uint16_t SLP_TYPb;
uint16_t SLP_EN;
uint16_t SCI_EN;
};
void acpi_sys_enable(struct acpi_state *state);
int acpi_sys_shutdown(struct acpi_state *state);
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