213 lines
6.0 KiB
C
213 lines
6.0 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef ACPI_H
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#define ACPI_H
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#include <vm_configurations.h>
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#define ACPI_RSDP_CHECKSUM_LENGTH 20U
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#define ACPI_RSDP_XCHECKSUM_LENGTH 36U
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#define ACPI_NAME_SIZE 4U
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#define ACPI_OEM_ID_SIZE 6U
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#define ACPI_OEM_TABLE_ID_SIZE 8U
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#define ACPI_MADT_TYPE_LOCAL_APIC 0U
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#define ACPI_MADT_TYPE_IOAPIC 1U
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#define ACPI_MADT_ENABLED 1U
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#define ACPI_MADT_TYPE_LOCAL_APIC_NMI 4U
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/* FACP field offsets */
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#define OFFSET_FACS_ADDR 36U
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#define OFFSET_RESET_REGISTER 116U
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#define OFFSET_RESET_VALUE 128U
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#define OFFSET_FACS_X_ADDR 132U
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#define OFFSET_PM1A_EVT 148U
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#define OFFSET_PM1A_CNT 172U
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/* FACS field offsets */
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#define OFFSET_FACS_SIGNATURE 0U
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#define OFFSET_FACS_LENGTH 4U
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#define OFFSET_WAKE_VECTOR_32 12U
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#define OFFSET_WAKE_VECTOR_64 24U
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/* MCFG field offsets */
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#define OFFSET_MCFG_LENGTH 4U
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#define OFFSET_MCFG_ENTRY0 44U
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#define OFFSET_MCFG_ENTRY0_BASE 44U
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#define OFFSET_MCFG_ENTRY1 60U
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#define ACPI_SIG_FADT "FACP" /* Fixed ACPI Description Table */
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#define ACPI_SIG_FACS 0x53434146U /* "FACS" */
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#define ACPI_SIG_RSDP "RSD PTR " /* Root System Description Ptr */
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#define ACPI_SIG_XSDT "XSDT" /* Extended System Description Table */
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#define ACPI_SIG_MADT "APIC" /* Multiple APIC Description Table */
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#define ACPI_SIG_DMAR "DMAR"
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#define ACPI_SIG_MCFG "MCFG" /* Memory Mapped Configuration table */
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struct packed_gas {
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uint8_t space_id;
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uint8_t bit_width;
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uint8_t bit_offset;
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uint8_t access_size;
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uint64_t address;
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} __packed;
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struct acpi_table_header {
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/* ASCII table signature */
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char signature[4];
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/* Length of table in bytes, including this header */
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uint32_t length;
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/* ACPI Specification minor version number */
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uint8_t revision;
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/* To make sum of entire table == 0 */
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uint8_t checksum;
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/* ASCII OEM identification */
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char oem_id[6];
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/* ASCII OEM table identification */
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char oem_table_id[8];
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/* OEM revision number */
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uint32_t oem_revision;
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/* ASCII ASL compiler vendor ID */
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char asl_compiler_id[4];
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/* ASL compiler version */
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uint32_t asl_compiler_revision;
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} __packed;
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struct acpi_table_rsdp {
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/* ACPI signature, contains "RSD PTR " */
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char signature[8];
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/* ACPI 1.0 checksum */
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uint8_t checksum;
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/* OEM identification */
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char oem_id[ACPI_OEM_ID_SIZE];
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/* Must be (0) for ACPI 1.0 or (2) for ACPI 2.0+ */
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uint8_t revision;
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/* 32-bit physical address of the RSDT */
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uint32_t rsdt_physical_address;
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/* Table length in bytes, including header (ACPI 2.0+) */
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uint32_t length;
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/* 64-bit physical address of the XSDT (ACPI 2.0+) */
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uint64_t xsdt_physical_address;
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/* Checksum of entire table (ACPI 2.0+) */
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uint8_t extended_checksum;
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/* Reserved, must be zero */
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uint8_t reserved[3];
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} __packed;
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struct acpi_table_rsdt {
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/* Common ACPI table header */
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struct acpi_table_header header;
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/* Array of pointers to ACPI tables */
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uint32_t table_offset_entry[1];
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} __packed;
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struct acpi_table_xsdt {
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/* Common ACPI table header */
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struct acpi_table_header header;
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/* Array of pointers to ACPI tables */
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uint64_t table_offset_entry[1];
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} __packed;
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struct acpi_table_madt {
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/* Common ACPI table header */
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struct acpi_table_header header;
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/* Physical address of local APIC */
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uint32_t address;
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uint32_t flags;
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} __packed;
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struct acpi_subtable_header {
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uint8_t type;
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uint8_t length;
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} __packed;
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struct acpi_madt_local_apic {
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struct acpi_subtable_header header;
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/* ACPI processor id */
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uint8_t processor_id;
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/* Processor's local APIC id */
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uint8_t id;
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uint32_t lapic_flags;
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} __packed;
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struct acpi_madt_local_apic_nmi {
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struct acpi_subtable_header header;
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uint8_t processor_id;
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uint16_t flags;
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uint8_t lint;
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} __packed;
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struct acpi_madt_ioapic {
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struct acpi_subtable_header header;
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/* IOAPIC id */
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uint8_t id;
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uint8_t rsvd;
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uint32_t addr;
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uint32_t gsi_base;
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} __packed;
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enum acpi_dmar_type {
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ACPI_DMAR_TYPE_HARDWARE_UNIT = 0,
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ACPI_DMAR_TYPE_RESERVED_MEMORY = 1,
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ACPI_DMAR_TYPE_ROOT_ATS = 2,
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ACPI_DMAR_TYPE_HARDWARE_AFFINITY = 3,
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ACPI_DMAR_TYPE_NAMESPACE = 4,
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ACPI_DMAR_TYPE_RESERVED = 5
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};
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struct acpi_table_dmar {
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/* Common ACPI table header */
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struct acpi_table_header header;
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/* Host address Width */
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uint8_t width;
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uint8_t flags;
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uint8_t reserved[10];
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} __packed;
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/* DMAR subtable header */
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struct acpi_dmar_header {
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uint16_t type;
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uint16_t length;
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} __packed;
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struct acpi_dmar_hardware_unit {
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struct acpi_dmar_header header;
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uint8_t flags;
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uint8_t reserved;
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uint16_t segment;
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/* register base address */
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uint64_t address;
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} __packed;
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struct acpi_dmar_pci_path {
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uint8_t device;
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uint8_t function;
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} __packed;
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struct acpi_dmar_device_scope {
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uint8_t entry_type;
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uint8_t length;
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uint16_t reserved;
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uint8_t enumeration_id;
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uint8_t bus;
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} __packed;
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void *get_acpi_tbl(const char *signature);
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struct ioapic_info;
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uint16_t parse_madt(uint32_t lapic_id_array[MAX_PCPU_NUM]);
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uint16_t parse_madt_ioapic(struct ioapic_info *ioapic_id_array);
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#ifdef CONFIG_ACPI_PARSE_ENABLED
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int32_t acpi_fixup(void);
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#endif
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#endif /* !ACPI_H */
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