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ladybird/Kernel/ACPI/Definitions.h

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/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefCounted.h>
#include <AK/Types.h>
#include <AK/Vector.h>
#include <Kernel/PhysicalAddress.h>
namespace Kernel::ACPI {
namespace FADTFlags {
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#fixed-acpi-description-table-fixed-feature-flags
enum class FeatureFlags : u32 {
WBINVD = 1 << 0,
WBINVD_FLUSH = 1 << 1,
PROC_C1 = 1 << 2,
P_LVL2_UP = 1 << 3,
PWR_BUTTON = 1 << 4,
SLP_BUTTON = 1 << 5,
FIX_RTC = 1 << 6,
RTC_s4 = 1 << 7,
TMR_VAL_EXT = 1 << 8,
DCK_CAP = 1 << 9,
RESET_REG_SUPPORTED = 1 << 10,
SEALED_CASE = 1 << 11,
HEADLESS = 1 << 12,
CPU_SW_SLP = 1 << 13,
PCI_EXP_WAK = 1 << 14,
USE_PLATFORM_CLOCK = 1 << 15,
S4_RTC_STS_VALID = 1 << 16,
REMOTE_POWER_ON_CAPABLE = 1 << 17,
FORCE_APIC_CLUSTER_MODEL = 1 << 18,
FORCE_APIC_PHYSICAL_DESTINATION_MODE = 1 << 19,
HW_REDUCED_ACPI = 1 << 20,
LOW_POWER_S0_IDLE_CAPABLE = 1 << 21
};
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#fixed-acpi-description-table-boot-ia-pc-boot-architecture-flags
enum class IA_PC_Flags : u8 {
Legacy_Devices = 1 << 0,
PS2_8042 = 1 << 1,
VGA_Not_Present = 1 << 2,
MSI_Not_Supported = 1 << 3,
PCIe_ASPM_Controls = 1 << 4,
CMOS_RTC_Not_Present = 1 << 5
};
struct [[gnu::packed]] HardwareFeatures {
bool wbinvd : 1;
bool wbinvd_flush : 1;
bool processor_c1 : 1;
bool multiprocessor_c2 : 1;
bool power_button : 1;
bool sleep_button : 1;
bool fix_rtc : 1;
bool rtc_s4 : 1;
bool timer_value_extension : 1;
bool docking_capability : 1;
bool reset_register_supported : 1;
bool sealed_case : 1;
bool headless : 1;
bool cpu_software_sleep : 1;
bool pci_express_wake : 1;
bool use_platform_clock : 1;
bool s4_rtc_status_valid : 1;
bool remote_power_on_capable : 1;
bool force_apic_cluster_model : 1;
bool force_apic_physical_destination_mode : 1;
bool hardware_reduced_acpi : 1;
bool low_power_s0_idle_capable : 1;
};
struct [[gnu::packed]] x86_Specific_Flags {
bool legacy_devices : 1;
bool keyboard_8042 : 1;
bool vga_not_present : 1;
bool msi_not_supported : 1;
bool cmos_rtc_not_present : 1;
};
};
namespace GenericAddressStructure {
enum class AddressSpace {
SystemMemory = 0,
SystemIO = 1,
PCIConfigurationSpace = 2,
EmbeddedController = 3,
SMBus = 4,
PCC = 0xA,
FunctionalFixedHardware = 0x7F
};
enum class AccessSize {
Undefined = 0,
Byte = 1,
Word = 2,
DWord = 3,
QWord = 4
};
enum class BitWidth {
Undefined = 0,
Byte = 8,
Word = 16,
DWord = 32,
QWord = 64
};
}
namespace Structures {
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#root-system-description-pointer-rsdp-structure
struct [[gnu::packed]] RSDPDescriptor {
char sig[8];
u8 checksum;
char oem_id[6];
u8 revision;
u32 rsdt_ptr;
};
struct [[gnu::packed]] RSDPDescriptor20 {
RSDPDescriptor base;
u32 length;
u64 xsdt_ptr;
u8 ext_checksum;
u8 reserved[3];
};
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#system-description-table-header
struct [[gnu::packed]] SDTHeader {
char sig[4];
u32 length;
u8 revision;
u8 checksum;
char oem_id[6];
char oem_table_id[8];
u32 oem_revision;
u32 creator_id;
u32 creator_revision;
};
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#root-system-description-table-rsdt
struct [[gnu::packed]] RSDT {
SDTHeader h;
u32 table_ptrs[];
};
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#extended-system-description-table-xsdt
struct [[gnu::packed]] XSDT {
SDTHeader h;
u64 table_ptrs[];
};
struct [[gnu::packed]] GenericAddressStructure {
u8 address_space;
u8 bit_width;
u8 bit_offset;
u8 access_size;
u64 address;
};
struct [[gnu::packed]] HPET {
SDTHeader h;
u8 hardware_revision_id;
u8 attributes;
u16 pci_vendor_id;
GenericAddressStructure event_timer_block;
u8 hpet_number;
u16 mininum_clock_tick;
u8 page_protection;
};
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#fixed-acpi-description-table-fadt
struct [[gnu::packed]] FADT {
SDTHeader h;
u32 firmware_ctrl;
u32 dsdt_ptr;
u8 reserved;
u8 preferred_pm_profile;
u16 sci_int;
u32 smi_cmd;
u8 acpi_enable_value;
u8 acpi_disable_value;
u8 s4bios_req;
u8 pstate_cnt;
u32 PM1a_EVT_BLK;
u32 PM1b_EVT_BLK;
u32 PM1a_CNT_BLK;
u32 PM1b_CNT_BLK;
u32 PM2_CNT_BLK;
u32 PM_TMR_BLK;
u32 GPE0_BLK;
u32 GPE1_BLK;
u8 PM1_EVT_LEN;
u8 PM1_CNT_LEN;
u8 PM2_CNT_LEN;
u8 PM_TMR_LEN;
u8 GPE0_BLK_LEN;
u8 GPE1_BLK_LEN;
u8 GPE1_BASE;
u8 cst_cnt;
u16 P_LVL2_LAT;
u16 P_LVL3_LAT;
u16 flush_size;
u16 flush_stride;
u8 duty_offset;
u8 duty_width;
u8 day_alrm;
u8 mon_alrm;
u8 century;
u16 ia_pc_boot_arch_flags;
u8 reserved2;
u32 flags;
GenericAddressStructure reset_reg;
u8 reset_value;
u16 arm_boot_arch;
u8 fadt_minor_version;
u64 x_firmware_ctrl;
u64 x_dsdt;
GenericAddressStructure x_pm1a_evt_blk;
GenericAddressStructure x_pm1b_evt_blk;
GenericAddressStructure x_pm1a_cnt_blk;
GenericAddressStructure x_pm1b_cnt_blk;
GenericAddressStructure x_pm2_cnt_blk;
GenericAddressStructure x_pm_tmr_blk;
GenericAddressStructure x_gpe0_blk;
GenericAddressStructure x_gpe1_blk;
GenericAddressStructure sleep_control;
GenericAddressStructure sleep_status;
u64 hypervisor_vendor_identity;
};
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#interrupt-controller-structure-types
enum class MADTEntryType {
LocalAPIC = 0x0,
IOAPIC = 0x1,
InterruptSourceOverride = 0x2,
NMI_Source = 0x3,
LocalAPIC_NMI = 0x4,
LocalAPIC_Address_Override = 0x5,
IO_SAPIC = 0x6,
Local_SAPIC = 0x7,
Platform_interrupt_Sources = 0x8,
Local_x2APIC = 0x9,
Local_x2APIC_NMI = 0xA,
GIC_CPU = 0xB,
GIC_Distributor = 0xC,
GIC_MSI = 0xD,
GIC_Redistrbutor = 0xE,
GIC_Interrupt_Translation = 0xF
};
struct [[gnu::packed]] MADTEntryHeader {
u8 type;
u8 length;
};
namespace MADTEntries {
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#i-o-apic-structure
struct [[gnu::packed]] IOAPIC {
MADTEntryHeader h;
u8 ioapic_id;
u8 reserved;
u32 ioapic_address;
u32 gsi_base;
};
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#processor-local-apic-structure
struct [[gnu::packed]] ProcessorLocalAPIC {
MADTEntryHeader h;
u8 acpi_processor_id;
u8 apic_id;
u32 flags;
};
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#interrupt-source-override-structure
struct [[gnu::packed]] InterruptSourceOverride {
MADTEntryHeader h;
u8 bus;
u8 source;
u32 global_system_interrupt;
u16 flags;
};
}
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#multiple-apic-description-table-madt-format
struct [[gnu::packed]] MADT {
SDTHeader h;
u32 lapic_address;
u32 flags;
MADTEntryHeader entries[];
};
struct [[gnu::packed]] AMLTable {
SDTHeader h;
char aml_code[];
};
struct [[gnu::packed]] PCI_MMIO_Descriptor {
u64 base_addr;
u16 seg_group_number;
u8 start_pci_bus;
u8 end_pci_bus;
u32 reserved;
};
struct [[gnu::packed]] MCFG {
SDTHeader header;
u64 reserved;
PCI_MMIO_Descriptor descriptors[];
};
}
class StaticParser;
class DynamicParser;
class Parser;
namespace StaticParsing {
Optional<PhysicalAddress> find_rsdp();
PhysicalAddress find_table(PhysicalAddress rsdp, const StringView& signature);
}
}
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