61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
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#pragma once
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#include <luna/Types.h>
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namespace PCI
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{
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enum Field : u32
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{
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VendorID = 0x00,
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DeviceID = 0x02,
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Command = 0x04,
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Status = 0x06,
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RevisionID = 0x08,
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ProgIF = 0x09,
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Subclass = 0x0a,
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Class = 0x0b,
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HeaderType = 0x0e,
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SecondaryBus = 0x19
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};
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namespace Device
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{
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struct ID
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{
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u16 vendor;
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u16 device;
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};
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struct Type
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{
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u8 klass;
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u8 subclass;
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u8 prog_if;
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};
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struct Address
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{
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u32 bus;
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u32 slot;
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u32 function;
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};
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}
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constexpr u16 INVALID_ID = 0xFFFF;
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// Architecture-dependent.
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u8 read8(const Device::Address& address, u32 field);
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u16 read16(const Device::Address& address, u32 field);
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u32 read32(const Device::Address& address, u32 field);
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void write8(const Device::Address& address, u32 field, u8 value);
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void write16(const Device::Address& address, u32 field, u16 value);
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void write32(const Device::Address& address, u32 field, u32 value);
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Device::ID read_id(const Device::Address& address);
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Device::Type read_type(const Device::Address& address);
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void scan();
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}
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