diff options
Diffstat (limited to 'EdkCompatibilityPkg/Compatibility/PciCfgOnPciCfg2Thunk/PciCfgToPciCfg2Thunk.c')
| -rw-r--r-- | EdkCompatibilityPkg/Compatibility/PciCfgOnPciCfg2Thunk/PciCfgToPciCfg2Thunk.c | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Compatibility/PciCfgOnPciCfg2Thunk/PciCfgToPciCfg2Thunk.c b/EdkCompatibilityPkg/Compatibility/PciCfgOnPciCfg2Thunk/PciCfgToPciCfg2Thunk.c new file mode 100644 index 0000000000..592a571f13 --- /dev/null +++ b/EdkCompatibilityPkg/Compatibility/PciCfgOnPciCfg2Thunk/PciCfgToPciCfg2Thunk.c @@ -0,0 +1,311 @@ +/** @file
+Module produce PciCfgPpi on top of PciCfgPpi2.
+
+PIWG's PI specification replaces Inte's EFI Specification 1.10.
+EFI_PEI_PCI_CFG_PPI defined in Inte's EFI Specification 1.10 is replaced by
+EFI_PEI_PCI_CFG2_PPI in PI 1.0.
+This module produces PciCfgPpi on top of PciCfgPpi2. This module is used on platform when both of
+these two conditions are true:
+1) Framework module is present that consumes PCI CFG AND
+2) PI module is present that produces PCI CFG2 but not PCI CFG
+
+The Usage of this module is rare since EDK II module IntelFrameworkModulePkg\Universal\PcatSingleSegmentPciCfgPei\PcatSingleSegmentPciCfgPei.inf
+that produce PCI CFG2 can also produce PCI CFG by setting Pcd Feature Flag gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPciCfgDisable
+to FALSE.
+
+
+Copyright (c) 2006 - 2008 Intel Corporation. <BR>
+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:
+**/
+
+#include <PiPei.h>
+#include <Ppi/PciCfg.h>
+#include <Ppi/PciCfg2.h>
+#include <Library/DebugLib.h>
+
+//
+// Function Prototypes
+//
+
+/**
+ Reads 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.
+
+**/
+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
+ );
+
+/**
+ Write to 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.
+
+**/
+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
+ );
+
+/**
+ 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. Type
+ EFI_PEI_PCI_CFG_PPI_WIDTH is defined in Read().
+
+ @param Address The physical address of the access.
+
+ @param SetBits Points to value to bitwise-OR with the read configuration value.
+ The size of the value is determined by Width.
+
+ @param ClearBits Points to the value to negate and bitwise-AND with the read configuration value.
+ The size of the value is determined by Width.
+
+
+ @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.
+
+**/
+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
+ );
+
+//
+// Module globals
+//
+EFI_PEI_PCI_CFG_PPI mPciCfgPpi = {
+ PciCfgRead,
+ PciCfgWrite,
+ PciCfgModify,
+};
+
+EFI_PEI_PPI_DESCRIPTOR mPpiListPciCfg = {
+ (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
+ &gEfiPciCfgPpiInServiceTableGuid,
+ &mPciCfgPpi
+};
+
+/**
+
+ Standard PEIM entry point.
+
+ @param FfsHeadher The FFS file header
+ @param PeiServices General purpose services available to every PEIM.
+
+
+ @retval EFI_SUCCESS if the interface could be successfully
+ installed
+
+--*/
+EFI_STATUS
+EFIAPI
+PeimInitializePciCfg (
+ IN EFI_PEI_FILE_HANDLE FfsHeader,
+ IN CONST EFI_PEI_SERVICES **PeiServices
+ )
+{
+ //
+ // Publish the PciCfgToPciCfg2 Thunk capability to other modules
+ //
+ return (*PeiServices)->InstallPpi (PeiServices, &mPpiListPciCfg);
+}
+
+/**
+ Reads 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.
+
+**/
+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
+ )
+{
+ EFI_PEI_PCI_CFG2_PPI *PciCfg2;
+
+ PciCfg2 = (*PeiServices)->PciCfg;
+
+ return PciCfg2->Read ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, Buffer);
+}
+
+
+/**
+ Write to 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.
+
+**/
+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
+ )
+{
+ EFI_PEI_PCI_CFG2_PPI *PciCfg2;
+
+ PciCfg2 = (*PeiServices)->PciCfg;
+
+ return PciCfg2->Write ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, Buffer);
+}
+
+/**
+ 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. Type
+ EFI_PEI_PCI_CFG_PPI_WIDTH is defined in Read().
+
+ @param Address The physical address of the access.
+
+ @param SetBits Points to value to bitwise-OR with the read configuration value.
+ The size of the value is determined by Width.
+
+ @param ClearBits Points to the value to negate and bitwise-AND with the read configuration value.
+ The size of the value is determined by Width.
+
+
+ @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.
+
+**/
+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
+ )
+{
+ EFI_PEI_PCI_CFG2_PPI *PciCfg2;
+
+ PciCfg2 = (*PeiServices)->PciCfg;
+
+ return PciCfg2->Modify ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, &SetBits, &ClearBits);
+}
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