96 lines
2 KiB
C
96 lines
2 KiB
C
#ifndef __ACPI_H__
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#define __ACPI_H__
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#include "kernel/kernel.h"
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/* ACPI root system description pointer */
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struct acpi_rsdp {
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char signature[8]; /* must be "RSD PTR " */
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u8_t checksum;
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char oemid[6];
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u8_t revision;
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u32_t rsdt_addr;
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u32_t length;
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};
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#define ACPI_SDT_SIGNATURE_LEN 4
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#define ACPI_SDT_SIGNATURE(name) #name
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/* header common to all system description tables */
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struct acpi_sdt_header {
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char signature[ACPI_SDT_SIGNATURE_LEN];
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u32_t length;
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u8_t revision;
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u8_t checksum;
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char oemid[6];
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char oem_table_id[8];
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u32_t oem_revision;
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u32_t creator_id;
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u32_t creator_revision;
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};
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struct acpi_madt_hdr {
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struct acpi_sdt_header hdr;
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u32_t local_apic_address;
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u32_t flags;
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};
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#define ACPI_MADT_TYPE_LAPIC 0
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#define ACPI_MADT_TYPE_IOAPIC 1
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#define ACPI_MADT_TYPE_INT_SRC 2
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#define ACPI_MADT_TYPE_NMI_SRC 3
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#define ACPI_MADT_TYPE_LAPIC_NMI 4
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#define ACPI_MADT_TYPE_LAPIC_ADRESS 5
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#define ACPI_MADT_TYPE_IOSAPIC 6
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#define ACPI_MADT_TYPE_LSAPIC 7
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#define ACPI_MADT_TYPE_PLATFORM_INT_SRC 8
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#define ACPI_MADT_TYPE_Lx2APIC 9
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#define ACPI_MADT_TYPE_Lx2APIC_NMI 10
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struct acpi_madt_item_hdr{
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u8_t type;
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u8_t length;
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};
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struct acpi_madt_lapic {
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struct acpi_madt_item_hdr hdr;
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u8_t acpi_cpu_id;
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u8_t apic_id;
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u32_t flags;
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};
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struct acpi_madt_ioapic {
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struct acpi_madt_item_hdr hdr;
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u8_t id;
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u8_t __reserved;
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u32_t address;
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u32_t global_int_base;
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};
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struct acpi_madt_int_src {
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struct acpi_madt_item_hdr hdr;
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u8_t bus;
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u8_t bus_int;
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u32_t global_int;
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u16_t mps_flags;
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};
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struct acpi_madt_nmi {
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struct acpi_madt_item_hdr hdr;
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u16_t flags;
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u32_t global_int;
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};
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void acpi_init(void);
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/*
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* Returns a pointer to the io acpi structure in the MADT table in ACPI. The
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* pointer is valid only until paging is turned off. No memory is allocated in
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* this function thus no memory needs to be freed
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*/
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struct acpi_madt_ioapic * acpi_get_ioapic_next(void);
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/* same as above for local APICs */
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struct acpi_madt_lapic * acpi_get_lapic_next(void);
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#endif /* __ACPI_H__ */
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