| // Copyright 2016 The Fuchsia Authors |
| // |
| // Use of this source code is governed by a MIT-style |
| // license that can be found in the LICENSE file or at |
| // https://opensource.org/licenses/MIT |
| |
| #ifndef ZIRCON_KERNEL_LIB_EFI_INCLUDE_EFI_PROTOCOL_BLOCK_IO_H_ |
| #define ZIRCON_KERNEL_LIB_EFI_INCLUDE_EFI_PROTOCOL_BLOCK_IO_H_ |
| |
| #include <efi/boot-services.h> |
| #include <efi/runtime-services.h> |
| #include <efi/types.h> |
| |
| #define EFI_BLOCK_IO_PROTOCOL_GUID \ |
| { \ |
| 0x964e5b21, 0x6459, 0x11d2, { 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \ |
| } |
| |
| extern efi_guid BlockIoProtocol; |
| |
| #define EFI_BLOCK_IO_PROTOCOL_REVISION2 0x00020001 |
| #define EFI_BLOCK_IO_PROTOCOL_REVISION3 0x00020031 |
| |
| typedef struct efi_block_io_media efi_block_io_media; |
| typedef struct efi_block_io_protocol efi_block_io_protocol; |
| |
| struct efi_block_io_protocol { |
| uint64_t Revision; |
| efi_block_io_media* Media; |
| efi_status (*Reset)(efi_block_io_protocol* self, bool ExtendedVerification) EFIAPI; |
| efi_status (*ReadBlocks)(efi_block_io_protocol* self, uint32_t MediaId, uint64_t LBA, |
| uint64_t BufferSize, void* Buffer) EFIAPI; |
| efi_status (*WriteBlocks)(efi_block_io_protocol* self, uint32_t MediaId, uint64_t LBA, |
| uint64_t BufferSize, const void* Buffer) EFIAPI; |
| efi_status (*FlushBlocks)(efi_block_io_protocol* self); |
| }; |
| |
| struct efi_block_io_media { |
| // present in rev1 |
| uint32_t MediaId; |
| bool RemovableMedia; |
| bool MediaPresent; |
| bool LogicalPartition; |
| bool ReadOnly; |
| bool WriteCaching; |
| uint32_t BlockSize; |
| uint32_t IoAlign; |
| uint64_t LastBlock; |
| |
| // present in rev2 |
| uint64_t LowestAlignedLba; |
| uint32_t LogicalBlocksPerPhysicalBlock; |
| |
| // present in rev3 |
| uint32_t OptimalTransferLengthGranularity; |
| }; |
| |
| #endif // ZIRCON_KERNEL_LIB_EFI_INCLUDE_EFI_PROTOCOL_BLOCK_IO_H_ |