52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
#include "arch/PCI.h"
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#include "arch/x86_64/IO.h"
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#include <luna/Check.h>
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#include <luna/Ignore.h>
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#define PCI_ADDRESS_PORT 0xCF8
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#define PCI_VALUE_PORT 0xCFC
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static inline constexpr u32 make_pci_address(const PCI::Device::Address& address, u32 field)
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{
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return 0x80000000 | (address.bus << 16) | (address.slot << 11) | (address.function << 8) | ((field)&0xFC);
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}
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namespace PCI
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{
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u8 read8(const Device::Address& address, u32 field)
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{
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IO::outl(PCI_ADDRESS_PORT, make_pci_address(address, field));
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return IO::inb(PCI_VALUE_PORT + (field & 3));
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}
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u16 read16(const Device::Address& address, u32 field)
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{
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IO::outl(PCI_ADDRESS_PORT, make_pci_address(address, field));
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return IO::inw(PCI_VALUE_PORT + (field & 2));
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}
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u32 read32(const Device::Address& address, u32 field)
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{
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IO::outl(PCI_ADDRESS_PORT, make_pci_address(address, field));
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return IO::inl(PCI_VALUE_PORT);
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}
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void write8(const Device::Address& address, u32 field, u8 value)
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{
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ignore(address, field, value);
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todo();
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}
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void write16(const Device::Address& address, u32 field, u8 value)
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{
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ignore(address, field, value);
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todo();
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}
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void write32(const Device::Address& address, u32 field, u8 value)
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{
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ignore(address, field, value);
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todo();
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}
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}
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