diff options
Diffstat (limited to 'vendor/r-efi/src/protocols/block_io.rs')
-rw-r--r-- | vendor/r-efi/src/protocols/block_io.rs | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/vendor/r-efi/src/protocols/block_io.rs b/vendor/r-efi/src/protocols/block_io.rs new file mode 100644 index 000000000..26a2c0a10 --- /dev/null +++ b/vendor/r-efi/src/protocols/block_io.rs @@ -0,0 +1,70 @@ +//! Block I/O Protocol +//! +//! Used to abstract mass storage devices to allow code running in the EFI boot services environment +//! to access the storage devices without specific knowledge of the type of device or controller that +//! manages the device. + +pub const PROTOCOL_GUID: crate::base::Guid = crate::base::Guid::from_fields( + 0x964e5b21, + 0x6459, + 0x11d2, + 0x8e, + 0x39, + &[0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b], +); + +pub const REVISION: u64 = 0x0000000000010000u64; +pub const REVISION2: u64 = 0x0000000000020001u64; +pub const REVISION3: u64 = 0x000000000002001fu64; + +#[repr(C)] +#[derive(Clone, Copy, Debug)] +pub struct Media { + pub media_id: u32, + pub removable_media: bool, + pub media_present: bool, + pub logical_partition: bool, + pub read_only: bool, + pub write_caching: bool, + pub block_size: u32, + pub io_align: u32, + pub last_block: crate::base::Lba, + pub lowest_aligned_lba: crate::base::Lba, + pub logical_blocks_per_physical_block: u32, + pub optimal_transfer_length_granularity: u32, +} + +pub type ProtocolReset = eficall! {fn( + *mut Protocol, + crate::base::Boolean, +) -> crate::base::Status}; + +pub type ProtocolReadBlocks = eficall! {fn( + *mut Protocol, + u32, + crate::base::Lba, + usize, + *mut core::ffi::c_void, +) -> crate::base::Status}; + +pub type ProtocolWriteBlocks = eficall! {fn( + *mut Protocol, + u32, + crate::base::Lba, + usize, + *mut core::ffi::c_void, +) -> crate::base::Status}; + +pub type ProtocolFlushBlocks = eficall! {fn( + *mut Protocol, +) -> crate::base::Status}; + +#[repr(C)] +pub struct Protocol { + pub revision: u64, + pub media: *const Media, + pub reset: ProtocolReset, + pub read_blocks: ProtocolReadBlocks, + pub write_blocks: ProtocolWriteBlocks, + pub flush_blocks: ProtocolFlushBlocks, +} |