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Kernel/ACPI: Sprinkle links to the specification all over

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The latest version of the ACPI specification (6.4) now has a web
version, making it possible to link directly to the relevant sections
of the specification.

I added links to the stuff that was easy to find.

The spec can be found here: https://uefi.org/specs/ACPI/6.4/index.html
This commit is contained in:
Luke 2021-05-31 18:25:27 +01:00 • committed by Linus Groh
parent 10ba6f254c
commit 4ee58d36c0
2 changed files with 21 additions and 2 deletions
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16
Kernel/ACPI/Definitions.h
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@ -16,6 +16,8 @@ namespace Kernel {
namespace 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,
@ -41,6 +43,7 @@ enum class FeatureFlags : u32 {
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,
@ -110,6 +113,8 @@ enum class BitWidth {
}
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;
@ -126,6 +131,7 @@ struct [[gnu::packed]] RSDPDescriptor20 {
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;
@ -138,11 +144,13 @@ struct [[gnu::packed]] SDTHeader {
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[];
@ -167,6 +175,7 @@ struct [[gnu::packed]] HPET {
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;
@ -225,6 +234,8 @@ struct [[gnu::packed]] FADT {
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,
@ -250,6 +261,8 @@ struct [[gnu::packed]] MADTEntryHeader {
};
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;
@ -258,6 +271,7 @@ struct [[gnu::packed]] IOAPIC {
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;
@ -265,6 +279,7 @@ struct [[gnu::packed]] ProcessorLocalAPIC {
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;
@ -274,6 +289,7 @@ struct [[gnu::packed]] InterruptSourceOverride {
};
}
// 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;