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std/os/uefi: Complete AcpiDevicePath and HardwareDevicePaths

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This commit is contained in:
fifty-six
2022-01-13 15:44:29 -05:00
parent 322757c4e1
commit ae084c5f59
1 changed files with 49 additions and 12 deletions
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61
lib/std/os/uefi/protocols/device_path_protocol.zig
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@@ -87,7 +87,10 @@ pub const DevicePathProtocol = packed struct {
},
.Acpi => blk: {
const acpi: ?AcpiDevicePath = switch (@intToEnum(AcpiDevicePath.Subtype, self.subtype)) {
else => null, // TODO
.Acpi => .{ .Acpi = @ptrCast(*const AcpiDevicePath.BaseAcpiDevicePath, self) },
.ExpandedAcpi => .{ .ExpandedAcpi = @ptrCast(*const AcpiDevicePath.ExpandedAcpiDevicePath, self) },
.Adr => .{ .Adr = @ptrCast(*const AcpiDevicePath.AdrDevicePath, self) },
_ => null,
};
break :blk if (acpi) |a| .{ .Acpi = a } else null;
},
@@ -173,58 +176,92 @@ pub const HardwareDevicePath = union(Subtype) {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
function: u8,
device: u8,
};
pub const PcCardDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
function_number: u8,
};
pub const MemoryMappedDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
memory_type: u32,
start_address: u64,
end_address: u64,
};
pub const VendorDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
vendor_guid: Guid,
};
pub const ControllerDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
controller_number: u32,
};
pub const BmcDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
interface_type: u8,
base_address: usize,
};
};
pub const AcpiDevicePath = union(Subtype) {
Acpi: void, // TODO
ExpandedAcpi: void, // TODO
Adr: void, // TODO
Nvdimm: void, // TODO
Acpi: *const BaseAcpiDevicePath,
ExpandedAcpi: *const ExpandedAcpiDevicePath,
Adr: *const AdrDevicePath,
pub const Subtype = enum(u8) {
Acpi = 1,
ExpandedAcpi = 2,
Adr = 3,
Nvdimm = 4,
_,
};
pub const BaseAcpiDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
hid: u32,
uid: u32,
};
pub const ExpandedAcpiDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
hid: u32,
uid: u32,
cid: u32,
// variable length u16[*:0] strings
// hid_str, uid_str, cid_str
};
pub const AdrDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
adr: u32,
// multiple adr entries can optionally follow
pub fn adrs(self: *const AdrDevicePath) []const u32 {
// self.length is a minimum of 8 with one adr which is size 4.
var entries = (self.length - 4) / @sizeOf(u32);
return @ptrCast([*]const u32, &self.adr)[0..entries];
}
};
};
pub const MessagingDevicePath = union(Subtype) {