add comments for protocol/print.h and retire ReadOnlyVariableThunkPresent

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8107 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jchen20
2009-04-17 01:58:48 +00:00
parent 8bd2aa7503
commit a45d161969
8 changed files with 34 additions and 65 deletions

View File

@@ -22,7 +22,23 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
typedef struct _ECP_PEI_PCI_CFG_PPI ECP_PEI_PCI_CFG_PPI;
/**
PCI read and write operation.
Write to/read from a given location in the PCI configuration space.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Width The width of the access. Enumerated in bytes.
See EFI_PEI_PCI_CFG_PPI_WIDTH above.
@param Address The physical address of the access. The format of
the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
@param Buffer A pointer to the buffer of data..
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_DEVICE_ERROR There was a problem with the transaction.
@retval EFI_DEVICE_NOT_READY The device is not capable of supporting the operation at this
time.
**/
typedef
EFI_STATUS
(EFIAPI *ECP_PEI_PCI_CFG_PPI_IO) (
@@ -33,6 +49,16 @@ EFI_STATUS
IN OUT VOID *Buffer
);
/**
The ECP_PEI_PCI_CFG_PPI interfaces are used to abstract accesses to PCI
controllers behind a PCI root bridge controller.
@param Read
PCI read services. See the Read() function description.
@param Write
PCI write services. See the Write() function description.
**/
struct _ECP_PEI_PCI_CFG_PPI {
ECP_PEI_PCI_CFG_PPI_IO Read;
ECP_PEI_PCI_CFG_PPI_IO Write;