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Add ATA drive support #27

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apio merged 28 commits from please-read-my-ata-drive into main 2023-06-16 19:40:11 +00:00
Conversation 1 Commits 28 Files Changed 24 +21 -8
1 changed files with 21 additions and 8 deletions
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Showing only changes of commit cc8450751c - Show all commits

29
kernel/src/arch/x86_64/PCI.cpp
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@ -33,19 +33,32 @@ namespace PCI
void write8(const Device::Address& address, u32 field, u8 value)
{
ignore(address, field, value);
todo();
u8 offset = (u8)(field & ~0x3);
union {
u8 split[4];
u32 full;
};
full = read32(address, offset);
split[(field & 0x3)] = value;
write32(address, offset, full);
}
void write16(const Device::Address& address, u32 field, u8 value)
void write16(const Device::Address& address, u32 field, u16 value)
{
ignore(address, field, value);
todo();
u8 offset = (u8)(field & ~0x3);
union {
u8 split[4];
u32 full;
};
full = read32(address, offset);
split[(field & 0x3)] = (u8)(value >> 8);
split[(field & 0x3) + 1] = (u8)(value & 0xff);
write32(address, offset, full);
}
void write32(const Device::Address& address, u32 field, u8 value)
void write32(const Device::Address& address, u32 field, u32 value)
{
ignore(address, field, value);
todo();
IO::outl(PCI_ADDRESS_PORT, make_pci_address(address, field));
IO::outl(PCI_VALUE_PORT, value);
}
}