102 lines
2.2 KiB
C++
102 lines
2.2 KiB
C++
#pragma once
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#include <BAN/Errors.h>
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namespace Kernel
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{
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class ACPI
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{
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public:
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struct SDTHeader
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{
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uint8_t signature[4];
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uint32_t length;
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uint8_t revision;
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uint8_t checksum;
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uint8_t oemid[6];
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uint64_t oem_table_id;
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uint32_t oem_revision;
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uint32_t creator_id;
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uint32_t creator_revision;
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} __attribute__((packed));
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struct FADT : public SDTHeader
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{
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uint32_t firmware_ctrl;
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uint32_t dsdt;
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uint8_t __reserved;
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uint8_t preferred_pm_profile;
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uint16_t sci_int;
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uint32_t smi_cmd;
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uint8_t acpi_enable;
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uint8_t acpi_disable;
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uint8_t s4bios_req;
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uint8_t pstate_cnt;
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uint32_t pm1a_evt_blk;
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uint32_t pm1b_evt_blk;
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uint32_t pm1a_cnt_blk;
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uint32_t pm1b_cnt_blk;
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uint32_t pm2_cnt_blk;
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uint32_t pm_tmr_blk;
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uint32_t gpe0_blk;
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uint32_t gpe1_blk;
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uint8_t pm1_evt_len;
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uint8_t pm1_cnt_len;
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uint8_t pm2_cnt_len;
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uint8_t pm_tmr_len;
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uint8_t gpe0_blk_len;
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uint8_t gpe1_blk_len;
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uint8_t gpe1_base;
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uint8_t cst_cnt;
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uint16_t p_lvl2_lat;
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uint16_t p_lvl3_lat;
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uint16_t flush_size;
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uint16_t flush_stride;
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uint8_t duty_offset;
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uint8_t duty_width;
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uint8_t day_alrm;
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uint8_t mon_alrm;
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uint8_t century;
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uint16_t iapc_boot_arch;
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uint8_t __reserved2;
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uint32_t flags;
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uint8_t reset_reg[12];
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uint8_t reset_value;
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uint16_t arm_boot_arch;
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uint8_t fadt_minor_version;
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uint64_t x_firmware_version;
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uint64_t x_dsdt;
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uint8_t x_pm1a_evt_blk[12];
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uint8_t x_pm1b_evt_blk[12];
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uint8_t x_pm1a_cnt_blk[12];
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uint8_t x_pm1b_cnt_blk[12];
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uint8_t x_pm2_cnt_blk[12];
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uint8_t x_pm_tmr_blk[12];
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uint8_t x_gpe0_blk[12];
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uint8_t x_gpe1_blk[12];
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uint8_t sleep_control_reg[12];
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uint8_t sleep_status_reg[12];
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uint64_t hypervison_vendor_identity;
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} __attribute__((packed));
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public:
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static BAN::ErrorOr<void> initialize();
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static ACPI& get();
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BAN::ErrorOr<const SDTHeader*> get_header(const char[4]);
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void unmap_header(const SDTHeader*);
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private:
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ACPI() = default;
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BAN::ErrorOr<void> initialize_impl();
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const SDTHeader* get_header_from_index(size_t);
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private:
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uintptr_t m_header_table = 0;
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uint32_t m_entry_size = 0;
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uint32_t m_entry_count = 0;
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};
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} |