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Kernel: Add make_generic_address_from_io_port

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This will be needed to deduplicate ACPI shutdown code for accessing both
the new generic address field and the legacy x86 port field.
This commit is contained in:
Undefine authored and Sönke Holz committed 2026-11-07 13:27:30 +01:00
1 parent f85dbe582f
commit 53b4ea3d31
2 files changed
+13
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Kernel/Firmware/ACPI/GenericAddress.cpp
+11
View File
@@ -14,6 +14,17 @@
namespace Kernel::ACPI {
::ACPI::Structures::GenericAddressStructure make_generic_address_from_io_port(u32 io_port)
{
return ::ACPI::Structures::GenericAddressStructure {
.address_space = ::ACPI::GenericAddressStructure::AddressSpace::SystemIO,
.bit_width = ::ACPI::GenericAddressStructure::BitWidth::Word,
.bit_offset = 0,
.access_size = ::ACPI::GenericAddressStructure::AccessSize::Word,
.address = io_port,
};
}
static ErrorOr<u8> get_bit_width(::ACPI::Structures::GenericAddressStructure const& structure)
{
// NOTE: We need to do a more complicated algorithm because for legacy reasons there are,
Kernel/Firmware/ACPI/GenericAddress.h
+2
View File
@@ -11,6 +11,8 @@
namespace Kernel::ACPI {
::ACPI::Structures::GenericAddressStructure make_generic_address_from_io_port(u32 io_port);
ErrorOr<u64> read_generic_address(::ACPI::Structures::GenericAddressStructure const& structure);
ErrorOr<void> write_generic_address(::ACPI::Structures::GenericAddressStructure const& structure, u64 value);