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Update DeviceIo protocol based on EFI 1.1 updated spec. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6654 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
lgao4 2008-11-21 03:00:06 +00:00
parent 58125b7a64
commit 73fa61fc78
1 changed files with 12 additions and 5 deletions
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17
MdePkg/Include/Protocol/DeviceIo.h
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@ -36,10 +36,14 @@ typedef struct _EFI_DEVICE_IO_PROTOCOL EFI_DEVICE_IO_PROTOCOL;
typedef EFI_DEVICE_IO_PROTOCOL EFI_DEVICE_IO_INTERFACE;
typedef enum {
IO_UINT8 = 0,
IO_UINT16 = 1,
IO_UINT32 = 2,
IO_UINT64 = 3
IO_UINT8 = 0,
IO_UINT16 = 1,
IO_UINT32 = 2,
IO_UINT64 = 3,
MMIO_COPY_UINT8 = 4,
MMIO_COPY_UINT16 = 5,
MMIO_COPY_UINT32 = 6,
MMIO_COPY_UINT64 = 7
} EFI_IO_WIDTH;
/**
@ -50,7 +54,10 @@ typedef enum {
@param Address The base address of the I/O operations.
@param Count The number of I/O operations to perform.
@param Buffer For read operations, the destination buffer to store the results. For write
operations, the source buffer to write data from.
operations, the source buffer to write data from. If
Width is MMIO_COPY_UINT8, MMIO_COPY_UINT16,
MMIO_COPY_UINT32, or MMIO_COPY_UINT64, then
Buffer is interpreted as a base address of an I/O operation such as Address.
@retval EFI_SUCCESS The data was read from or written to the device.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.