diff options
Diffstat (limited to 'OldMdePkg/Include/Ppi/PciCfg.h')
| -rw-r--r-- | OldMdePkg/Include/Ppi/PciCfg.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/OldMdePkg/Include/Ppi/PciCfg.h b/OldMdePkg/Include/Ppi/PciCfg.h new file mode 100644 index 0000000000..987f54ed43 --- /dev/null +++ b/OldMdePkg/Include/Ppi/PciCfg.h @@ -0,0 +1,123 @@ +/** @file
+ This file declares PciCfg PPI used to access PCI configuration space in PEI
+
+ Copyright (c) 2006, 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.h
+
+ @par Revision Reference:
+ This PPI is defined in PEI CIS
+ Version 0.91.
+
+**/
+
+#ifndef __PEI_PCI_CFG_H__
+#define __PEI_PCI_CFG_H__
+
+#define EFI_PEI_PCI_CFG_PPI_INSTALLED_GUID \
+ { \
+ 0xe1f2eba0, 0xf7b9, 0x4a26, {0x86, 0x20, 0x13, 0x12, 0x21, 0x64, 0x2a, 0x90 } \
+ }
+
+typedef struct _EFI_PEI_PCI_CFG_PPI EFI_PEI_PCI_CFG_PPI;
+
+#define PEI_PCI_CFG_ADDRESS(bus, dev, func, reg) ( \
+ (UINT64) ((((UINTN) bus) << 24) + (((UINTN) dev) << 16) + (((UINTN) func) << 8) + ((UINTN) reg)) \
+ ) & 0x00000000ffffffff
+
+typedef enum {
+ EfiPeiPciCfgWidthUint8 = 0,
+ EfiPeiPciCfgWidthUint16 = 1,
+ EfiPeiPciCfgWidthUint32 = 2,
+ EfiPeiPciCfgWidthUint64 = 3,
+ EfiPeiPciCfgWidthMaximum
+} EFI_PEI_PCI_CFG_PPI_WIDTH;
+
+typedef struct {
+ UINT8 Register;
+ UINT8 Function;
+ UINT8 Device;
+ UINT8 Bus;
+ UINT8 Reserved[4];
+} EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS;
+
+/**
+ PCI read and 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_NOT_YET_AVAILABLE The service has not been installed.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PEI_PCI_CFG_PPI_IO) (
+ 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.
+ @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.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PEI_PCI_CFG_PPI_RW) (
+ 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
+ );
+
+/**
+ @par Ppi Description:
+ The EFI_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.
+
+ @param Modify
+ PCI read-modify-write services. See the Modify() function description.
+
+**/
+struct _EFI_PEI_PCI_CFG_PPI {
+ EFI_PEI_PCI_CFG_PPI_IO Read;
+ EFI_PEI_PCI_CFG_PPI_IO Write;
+ EFI_PEI_PCI_CFG_PPI_RW Modify;
+};
+
+extern EFI_GUID gEfiPciCfgPpiInServiceTableGuid;
+
+#endif
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