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author | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-01-14 21:45:28 +0000 |
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committer | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-01-14 21:45:28 +0000 |
commit | 0b70a697a6d14c6f6f789876c0e67638fc91ee48 (patch) | |
tree | 39f1691ade3f543eb25bca019f8924bdb1c859da | |
parent | 9e926b693de28a1b77f64adda952463dcc481d12 (diff) | |
download | edk2-platforms-0b70a697a6d14c6f6f789876c0e67638fc91ee48.tar.xz |
Clean up comments
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9759 6f19259b-4bc3-4df7-8a09-765794883524
-rw-r--r-- | MdePkg/Include/Protocol/CpuIo2.h | 56 |
1 files changed, 29 insertions, 27 deletions
diff --git a/MdePkg/Include/Protocol/CpuIo2.h b/MdePkg/Include/Protocol/CpuIo2.h index 78b3eb6998..2bda51cebb 100644 --- a/MdePkg/Include/Protocol/CpuIo2.h +++ b/MdePkg/Include/Protocol/CpuIo2.h @@ -59,41 +59,43 @@ typedef enum { /**
Enables a driver to access registers in the PI CPU I/O space.
- The Io.Read() and Io.Write() functions enable a driver to access PCI controller registers in
- the PI CPU I/O space.
-
- The I/O operations are carried out exactly as requested. The caller is responsible for satisfying any
- alignment and I/O width restrictions that a PI System on a platform might require. For example on
- some platforms, width requests of EfiCpuIoWidthUint64 do not work. Misaligned buffers, on
- the other hand, will be handled by the driver.
+ The Io.Read() and Io.Write() functions enable a driver to access PCI controller
+ registers in the PI CPU I/O space.
+
+ The I/O operations are carried out exactly as requested. The caller is responsible
+ for satisfying any alignment and I/O width restrictions that a PI System on a
+ platform might require. For example on some platforms, width requests of
+ EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, will
+ be handled by the driver.
If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32,
- or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for each of the
- Count operations that is performed.
+ or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for
+ each of the Count operations that is performed.
If Width is EfiCpuIoWidthFifoUint8, EfiCpuIoWidthFifoUint16,
EfiCpuIoWidthFifoUint32, or EfiCpuIoWidthFifoUint64, then only Buffer is
- incremented for each of the Count operations that is performed. The read or write operation is
- performed Count times on the same Address.
+ incremented for each of the Count operations that is performed. The read or
+ write operation is performed Count times on the same Address.
If Width is EfiCpuIoWidthFillUint8, EfiCpuIoWidthFillUint16,
EfiCpuIoWidthFillUint32, or EfiCpuIoWidthFillUint64, then only Address is
- incremented for each of the Count operations that is performed. The read or write operation is
- performed Count times from the first element of Buffer.
-
- @param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance.
- @param[in] Width Signifies the width of the I/O or Memory operation.
- @param[in] Address The base address of the I/O operation. The caller is responsible
- for aligning the Address if required.
- @param[in] Count The number of I/O operations to perform. The number of bytes moved
- is Width size * Count, starting at Address.
- @param[in, out] Buffer For read operations, the destination buffer to store the results.
- For write operations, the source buffer from which to write data.
-
- @retval EFI_SUCCESS The data was read from or written to the EFI system.
- @retval EFI_INVALID_PARAMETER Width is invalid for this EFI system. Or Buffer is NULL.
- @retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
- Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
+ incremented for each of the Count operations that is performed. The read or
+ write operation is performed Count times from the first element of Buffer.
+
+ @param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance.
+ @param[in] Width Signifies the width of the I/O or Memory operation.
+ @param[in] Address The base address of the I/O operation.
+ @param[in] Count The number of I/O operations to perform. The number
+ of bytes moved is Width size * Count, starting at Address.
+ @param[in, out] Buffer For read operations, the destination buffer to store the results.
+ For write operations, the source buffer from which to write data.
+
+ @retval EFI_SUCCESS The data was read from or written to the PI system.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PI system.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
+ @retval EFI_UNSUPPORTED The address range specified by Address, Width,
+ and Count is not valid for this PI system.
**/
typedef
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