diff options
Diffstat (limited to 'IntelFrameworkModulePkg/Universal/PcatSingleSegmentPciCfgPei/PciCfg.c')
| -rw-r--r-- | IntelFrameworkModulePkg/Universal/PcatSingleSegmentPciCfgPei/PciCfg.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/IntelFrameworkModulePkg/Universal/PcatSingleSegmentPciCfgPei/PciCfg.c b/IntelFrameworkModulePkg/Universal/PcatSingleSegmentPciCfgPei/PciCfg.c new file mode 100644 index 0000000..20bee53 --- /dev/null +++ b/IntelFrameworkModulePkg/Universal/PcatSingleSegmentPciCfgPei/PciCfg.c @@ -0,0 +1,174 @@ +/*++
+
+ Copyright (c) 2006 - 2007, Intel Corporation
+ All rights reserved. This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+
+
+Module Name:
+
+ PciCfg.c
+
+Abstract:
+
+ Single Segment Pci Configuration PPI
+
+Revision History
+
+--*/
+
+#include "PciCfgInternal.h"
+
+
+/**
+ PCI read operation.
+
+ @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.
+ @param Address The physical address of the access.
+ @param Buffer A pointer to the buffer of data.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_INVALID_PARAMETER Unsupported width
+ enumeration.
+
+**/
+EFI_STATUS
+EFIAPI
+PciCfgRead (
+ IN EFI_PEI_SERVICES **PeiServices,
+ IN EFI_PEI_PCI_CFG_PPI *This,
+ IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+ IN UINT64 Address,
+ IN OUT VOID *Buffer
+ )
+{
+ UINTN PciLibAddress;
+
+ PciLibAddress = COMMON_TO_PCILIB_ADDRESS (Address);
+ switch (Width) {
+ case EfiPeiPciCfgWidthUint8:
+ * (UINT8 *) Buffer = PciRead8 (PciLibAddress);
+ break;
+
+ case EfiPeiPciCfgWidthUint16:
+ * (UINT16 *) Buffer = PciRead16 (PciLibAddress);
+ break;
+
+ case EfiPeiPciCfgWidthUint32:
+ * (UINT32 *) Buffer = PciRead32 (PciLibAddress);
+ break;
+
+ default:
+ return EFI_INVALID_PARAMETER;
+ }
+ return EFI_SUCCESS;
+}
+
+
+/**
+ PCI write operation.
+
+ @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.
+ @param Address The physical address of the access.
+ @param Buffer A pointer to the buffer of data.
+
+ @retval EFI_SUCCESS The function completed successfully.
+
+
+ @retval EFI_INVALID_PARAMETER Unsupported width
+ enumeration.
+
+**/
+EFI_STATUS
+EFIAPI
+PciCfgWrite (
+ IN EFI_PEI_SERVICES **PeiServices,
+ IN EFI_PEI_PCI_CFG_PPI *This,
+ IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+ IN UINT64 Address,
+ IN OUT VOID *Buffer
+ )
+{
+ UINTN PciLibAddress;
+
+ PciLibAddress = COMMON_TO_PCILIB_ADDRESS (Address);
+ switch (Width) {
+ case EfiPeiPciCfgWidthUint8:
+ PciWrite8 (PciLibAddress, *(UINT8 *) Buffer);
+ break;
+
+ case EfiPeiPciCfgWidthUint16:
+ PciWrite16 (PciLibAddress, *(UINT16 *) Buffer);
+ break;
+
+ case EfiPeiPciCfgWidthUint32:
+ PciWrite32 (PciLibAddress, *(UINT32 *) Buffer);
+ break;
+
+ default:
+ return EFI_INVALID_PARAMETER;
+ }
+ return EFI_SUCCESS;
+}
+
+
+/**
+ PCI read-modify-write operation.
+
+ @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.
+ @param Address The physical address of the access.
+ @param SetBits Value of the bits to set.
+ @param ClearBits Value of the bits to clear.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_INVALID_PARAMETER Unsupported width
+ enumeration.
+
+**/
+EFI_STATUS
+EFIAPI
+PciCfgModify (
+ IN EFI_PEI_SERVICES **PeiServices,
+ IN EFI_PEI_PCI_CFG_PPI *This,
+ IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN SetBits,
+ IN UINTN ClearBits
+ )
+{
+ UINTN PciLibAddress;
+
+ PciLibAddress = COMMON_TO_PCILIB_ADDRESS (Address);
+ switch (Width) {
+ case EfiPeiPciCfgWidthUint8:
+ PciAndThenOr8 (PciLibAddress, (UINT8)~ClearBits, (UINT8)SetBits);
+ break;
+
+ case EfiPeiPciCfgWidthUint16:
+ PciAndThenOr16 (PciLibAddress, (UINT16)~ClearBits, (UINT16)SetBits);
+ break;
+
+ case EfiPeiPciCfgWidthUint32:
+ PciAndThenOr32 (PciLibAddress, (UINT32)~ClearBits, (UINT32)SetBits);
+ break;
+
+ default:
+ return EFI_INVALID_PARAMETER;
+ }
+ return EFI_SUCCESS;
+}
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