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#ifndef __ACPI_H__
#define __ACPI_H__
#include "kernel/kernel.h"
/* ACPI root system description pointer */
struct acpi_rsdp {
char signature[8]; /* must be "RSD PTR " */
u8_t checksum;
char oemid[6];
u8_t revision;
u32_t rsdt_addr;
u32_t length;
};
#define ACPI_SDT_SIGNATURE_LEN 4
#define ACPI_SDT_SIGNATURE(name) #name
/* header common to all system description tables */
struct acpi_sdt_header {
char signature[ACPI_SDT_SIGNATURE_LEN];
u32_t length;
u8_t revision;
u8_t checksum;
char oemid[6];
char oem_table_id[8];
u32_t oem_revision;
u32_t creator_id;
u32_t creator_revision;
};
struct acpi_generic_address {
u8_t address_space_id;
u8_t register_bit_width;
u8_t register_bit_offset;
u8_t access_size;
u64_t address;
};
struct acpi_fadt_header
{
struct acpi_sdt_header hdr;
u32_t facs;
u32_t dsdt;
u8_t model;
u8_t preferred_pm_profile;
u16_t sci_int;
u32_t smi_cmd;
u8_t acpi_enable;
u8_t acpi_disable;
u8_t s4bios_req;
u8_t pstate_cnt;
u32_t pm1a_evt_blk;
u32_t pm1b_evt_blk;
u32_t pm1a_cnt_blk;
u32_t pm1b_cnt_blk;
u32_t pm2_cnt_blk;
u32_t pm_tmr_blk;
u32_t gpe0_blk;
u32_t gpe1_blk;
u8_t pm1_evt_len;
u8_t pm1_cnt_len;
u8_t pm2_cnt_len;
u8_t pm_tmr_len;
u8_t gpe0_blk_len;
u8_t gpe1_blk_len;
u8_t gpe1_base;
u8_t cst_cnt;
u16_t p_lvl2_lat;
u16_t p_lvl3_lat;
u16_t flush_size;
u16_t flush_stride;
u8_t duty_offset;
u8_t duty_width;
u8_t day_alrm;
u8_t mon_alrm;
u8_t century;
u16_t iapc_boot_arch;
u8_t reserved1;
u32_t flags;
struct acpi_generic_address reset_reg;
u8_t reset_value;
u8_t reserved2[3];
u64_t xfacs;
u64_t xdsdt;
struct acpi_generic_address xpm1a_evt_blk;
struct acpi_generic_address xpm1b_evt_blk;
struct acpi_generic_address xpm1a_cnt_blk;
struct acpi_generic_address xpm1b_cnt_blk;
struct acpi_generic_address xpm2_cnt_blk;
struct acpi_generic_address xpm_tmr_blk;
struct acpi_generic_address xgpe0_blk;
struct acpi_generic_address xgpe1_blk;
};
struct acpi_madt_hdr {
struct acpi_sdt_header hdr;
u32_t local_apic_address;
u32_t flags;
};
#define ACPI_MADT_TYPE_LAPIC 0
#define ACPI_MADT_TYPE_IOAPIC 1
#define ACPI_MADT_TYPE_INT_SRC 2
#define ACPI_MADT_TYPE_NMI_SRC 3
#define ACPI_MADT_TYPE_LAPIC_NMI 4
#define ACPI_MADT_TYPE_LAPIC_ADRESS 5
#define ACPI_MADT_TYPE_IOSAPIC 6
#define ACPI_MADT_TYPE_LSAPIC 7
#define ACPI_MADT_TYPE_PLATFORM_INT_SRC 8
#define ACPI_MADT_TYPE_Lx2APIC 9
#define ACPI_MADT_TYPE_Lx2APIC_NMI 10
struct acpi_madt_item_hdr{
u8_t type;
u8_t length;
};
struct acpi_madt_lapic {
struct acpi_madt_item_hdr hdr;
u8_t acpi_cpu_id;
u8_t apic_id;
u32_t flags;
};
struct acpi_madt_ioapic {
struct acpi_madt_item_hdr hdr;
u8_t id;
u8_t __reserved;
u32_t address;
u32_t global_int_base;
};
struct acpi_madt_int_src {
struct acpi_madt_item_hdr hdr;
u8_t bus;
u8_t bus_int;
u32_t global_int;
u16_t mps_flags;
};
struct acpi_madt_nmi {
struct acpi_madt_item_hdr hdr;
u16_t flags;
u32_t global_int;
};
void acpi_init(void);
void acpi_poweroff(void);
/*
* Returns a pointer to the io acpi structure in the MADT table in ACPI. The
* pointer is valid only until paging is turned off. No memory is allocated in
* this function thus no memory needs to be freed
*/
struct acpi_madt_ioapic * acpi_get_ioapic_next(void);
/* same as above for local APICs */
struct acpi_madt_lapic * acpi_get_lapic_next(void);
#endif /* __ACPI_H__ */
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