103 lines
No EOL
3.2 KiB
C
103 lines
No EOL
3.2 KiB
C
/* EMK 1.0 Copyright (c) 2025 Piraterna */
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#ifndef MADT_H
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#define MADT_H
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#include <stdint.h>
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#include <sys/acpi.h>
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#define MADT_ENTRY_LAPIC 0 /* Local APIC */
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#define MADT_ENTRY_IOAPIC 1 /* I/O APIC */
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#define MADT_ENTRY_IOAPIC_SRC_OVR 2 /* I/O APIC Interrupt Source Override */
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#define MADT_ENTRY_IOAPIC_NMI_SRC 3 /* I/O APIC Non-Maskable Interrupt Source */
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#define MADT_ENTRY_LAPIC_NMI 4 /* Local APIC Non-Maskable Interrupt */
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#define MADT_ENTRY_LAPIC_ADDR_OVR 5 /* Local APIC Address Override */
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#define MADT_ENTRY_LX2APIC 9 /* Local x2APIC */
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typedef struct acpi_madt
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{
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acpi_sdt_header_t sdt;
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uint32_t lapic_base;
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uint32_t flags;
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char table[];
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} __attribute__((packed)) acpi_madt_t;
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typedef struct acpi_madt_entry
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{
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uint8_t type;
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uint8_t length;
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} __attribute__((packed)) acpi_madt_entry_t;
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/* Entry Type 0: Processor Local APIC */
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typedef struct acpi_madt_lapic
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{
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uint8_t type;
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uint8_t length;
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uint8_t acpi_proc_id; /* ACPI Processor ID */
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uint8_t apic_id; /* APIC ID */
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uint32_t flags; /* Bit 0: Processor Enabled, Bit 1: Online Capable */
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} __attribute__((packed)) acpi_madt_lapic_t;
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/* Entry Type 1: I/O APIC */
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typedef struct acpi_madt_ioapic
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{
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uint8_t type;
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uint8_t length;
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uint8_t ioapic_id; /* I/O APIC's ID */
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uint8_t reserved; /* Reserved (0) */
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uint32_t ioapic_addr; /* I/O APIC Address */
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uint32_t gsi_base; /* Global System Interrupt Base */
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} __attribute__((packed)) acpi_madt_ioapic_t;
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/* Entry Type 2: I/O APIC Interrupt Source Override */
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typedef struct acpi_madt_ioapic_src_ovr
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{
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uint8_t type;
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uint8_t length;
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uint8_t bus_source; /* Bus Source */
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uint8_t irq_source; /* IRQ Source */
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uint32_t gsi; /* Global System Interrupt */
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uint16_t flags; /* Flags */
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} __attribute__((packed)) acpi_madt_ioapic_src_ovr_t;
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/* Entry Type 3: I/O APIC Non-Maskable Interrupt Source */
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typedef struct acpi_madt_ioapic_nmi_src
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{
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uint8_t type;
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uint8_t length;
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uint8_t nmi_source; /* NMI Source */
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uint8_t reserved; /* Reserved */
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uint16_t flags; /* Flags */
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uint32_t gsi; /* Global System Interrupt */
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} __attribute__((packed)) acpi_madt_ioapic_nmi_src_t;
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/* Entry Type 4: Local APIC Non-Maskable Interrupt */
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typedef struct acpi_madt_lapic_nmi
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{
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uint8_t type;
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uint8_t length;
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uint8_t acpi_proc_id; /* ACPI Processor ID (0xFF for all processors) */
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uint16_t flags; /* Flags */
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uint8_t lint; /* LINT# (0 or 1) */
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} __attribute__((packed)) acpi_madt_lapic_nmi_t;
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/* Entry Type 5: Local APIC Address Override */
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typedef struct acpi_madt_lapic_addr_ovr
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{
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uint8_t type;
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uint8_t length;
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uint16_t reserved; /* Reserved */
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uint64_t lapic_addr; /* 64-bit Physical Address of Local APIC */
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} __attribute__((packed)) acpi_madt_lapic_addr_ovr_t;
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/* Entry Type 9: Processor Local x2APIC */
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typedef struct acpi_madt_lx2apic
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{
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uint8_t type;
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uint8_t length;
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uint16_t reserved;
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uint32_t x2apic_id; /* Processor's Local x2APIC ID */
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uint32_t flags; /* Flags (same as Local APIC) */
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uint32_t acpi_id; /* ACPI ID */
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} __attribute__((packed)) acpi_madt_lx2apic_t;
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#endif // MADT_H
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