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Clean up file header comments to match CPU I/O Protocol .h file. 

Add check to make sure the Address parameter passed in is properly aligned for the requested operation.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9760 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
mdkinney 2010-01-14 22:12:32 +00:00
parent 0b70a697a6
commit 7a7f916a70
1 changed files with 161 additions and 58 deletions
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213
IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIo.c
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@ -124,18 +124,26 @@ UINT8 mOutStride[] = {
/** /**
Check parameters to a CPU I/O Protocol service request. Check parameters to a CPU I/O Protocol service request.
@param Width Signifies the width of the I/O or Memory operation. The I/O operations are carried out exactly as requested. The caller is responsible
@param Address The base address of the I/O or Memory operation. for satisfying any alignment and I/O width restrictions that a PI System on a
@param Count The number of I/O or Memory operations to perform. platform might require. For example on some platforms, width requests of
The number of bytes moved is Width size * Count, starting at Address. EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, will
@param Buffer For read operations, the destination buffer to store the results. be handled by the driver.
For write operations, the source buffer from which to write data.
@param MmioOperation TRUE for an MMIO operation, FALSE for I/O Port operation.
@retval EFI_SUCCESS The parameters for this request pass the checks. @param[in] MmioOperation TRUE for an MMIO operation, FALSE for I/O Port operation.
@retval EFI_INVALID_PARAMETER Buffer is NULL or Width is not valid. @param[in] Width Signifies the width of the I/O or Memory operation.
@retval EFI_UNSUPPORTED The address range specified by Address, Width, and Count exceeds Limit. @param[in] Address The base address of the I/O operation.
The Buffer is not aligned for the given Width. @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] 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 parameters for this request pass the checks.
@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.
**/ **/
EFI_STATUS EFI_STATUS
@ -180,6 +188,13 @@ CpuIoCheckParameter (
return EFI_INVALID_PARAMETER; return EFI_INVALID_PARAMETER;
} }
//
// Check to see if Address is alligned
//
if ((Address & (UINT64)(mInStride[Width] - 1)) != 0) {
return EFI_UNSUPPORTED;
}
// //
// Check to see if any address associated with this transfer exceeds the maximum // Check to see if any address associated with this transfer exceeds the maximum
// allowed address. The maximum address implied by the parameters passed in is // allowed address. The maximum address implied by the parameters passed in is
@ -223,18 +238,40 @@ CpuIoCheckParameter (
/** /**
Reads memory-mapped registers. Reads memory-mapped registers.
@param This A pointer to the EFI_CPU_IO_PROTOCOL instance. The I/O operations are carried out exactly as requested. The caller is responsible
@param Width Signifies the width of the I/O or Memory operation. for satisfying any alignment and I/O width restrictions that a PI System on a
@param Address The base address of the I/O or Memoryoperation. platform might require. For example on some platforms, width requests of
@param Count The number of I/O or Memory operations to perform. EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, will
The number of bytes moved is Width size * Count, starting at Address. be handled by the driver.
@param 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. If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32,
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system.Or Buffer is NULL. or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width. each of the Count operations that is performed.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
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.
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_IO_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[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.
**/ **/
EFI_STATUS EFI_STATUS
@ -281,18 +318,40 @@ CpuMemoryServiceRead (
/** /**
Writes memory-mapped registers. Writes memory-mapped registers.
@param This A pointer to the EFI_CPU_IO_PROTOCOL instance. The I/O operations are carried out exactly as requested. The caller is responsible
@param Width Signifies the width of the I/O or Memory operation. for satisfying any alignment and I/O width restrictions that a PI System on a
@param Address The base address of the I/O or Memoryoperation. platform might require. For example on some platforms, width requests of
@param Count The number of I/O or Memory operations to perform. EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, will
The number of bytes moved is Width size * Count, starting at Address. be handled by the driver.
@param 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. If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32,
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system.Or Buffer is NULL. or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width. each of the Count operations that is performed.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
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.
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_IO_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] 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.
**/ **/
EFI_STATUS EFI_STATUS
@ -339,18 +398,40 @@ CpuMemoryServiceWrite (
/** /**
Reads I/O registers. Reads I/O registers.
@param This A pointer to the EFI_CPU_IO_PROTOCOL instance. The I/O operations are carried out exactly as requested. The caller is responsible
@param Width Signifies the width of the I/O or Memory operation. for satisfying any alignment and I/O width restrictions that a PI System on a
@param Address The base address of the I/O or Memoryoperation. platform might require. For example on some platforms, width requests of
@param Count The number of I/O or Memory operations to perform. EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, will
The number of bytes moved is Width size * Count, starting at Address. be handled by the driver.
@param 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. If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32,
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system.Or Buffer is NULL. or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width. each of the Count operations that is performed.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
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.
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_IO_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[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.
**/ **/
EFI_STATUS EFI_STATUS
@ -396,18 +477,40 @@ CpuIoServiceRead (
/** /**
Write I/O registers. Write I/O registers.
@param This A pointer to the EFI_CPU_IO_PROTOCOL instance. The I/O operations are carried out exactly as requested. The caller is responsible
@param Width Signifies the width of the I/O or Memory operation. for satisfying any alignment and I/O width restrictions that a PI System on a
@param Address The base address of the I/O or Memoryoperation. platform might require. For example on some platforms, width requests of
@param Count The number of I/O or Memory operations to perform. EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, will
The number of bytes moved is Width size * Count, starting at Address. be handled by the driver.
@param 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. If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32,
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system.Or Buffer is NULL. or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width. each of the Count operations that is performed.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
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.
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_IO_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] 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.
**/ **/
EFI_STATUS EFI_STATUS