mirror of https://github.com/acidanthera/audk.git
105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/** @file
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This file declares the PciCfg PPI used to access the PCI configuration space in PEI
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Revision Reference:
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This PPI is defined in PEI CIS
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Version 0.91.
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**/
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#ifndef __PEI_PCI_CFG_H__
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#define __PEI_PCI_CFG_H__
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#include <Ppi/PciCfg2.h>
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//
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// Get the common definitions for EFI_PEI_PCI_CFG_PPI_WIDTH.
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//
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#define EFI_PEI_PCI_CFG_PPI_INSTALLED_GUID \
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{ \
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0xe1f2eba0, 0xf7b9, 0x4a26, {0x86, 0x20, 0x13, 0x12, 0x21, 0x64, 0x2a, 0x90 } \
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}
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typedef struct _EFI_PEI_PCI_CFG_PPI EFI_PEI_PCI_CFG_PPI;
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#define PEI_PCI_CFG_ADDRESS(bus, dev, func, reg) ( \
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(UINT64) ((((UINTN) bus) << 24) + (((UINTN) dev) << 16) + (((UINTN) func) << 8) + ((UINTN) reg)) \
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) & 0x00000000ffffffff
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/**
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PCI read and write operation.
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@param PeiServices An indirect pointer to the PEI Services Table
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published by the PEI Foundation.
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@param This Pointer to local data for the interface.
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@param Width The width of the access. Enumerated in bytes.
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@param Address The physical address of the access.
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@param Buffer A pointer to the buffer of data.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_NOT_YET_AVAILABLE The service has not been installed.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_PCI_CFG_PPI_IO)(
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_PCI_CFG_PPI *This,
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IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
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IN UINT64 Address,
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IN OUT VOID *Buffer
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);
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/**
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PCI read-modify-write operation.
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@param PeiServices An indirect pointer to the PEI Services Table
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published by the PEI Foundation.
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@param This The pointer to local data for the interface.
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@param Width The width of the access. Enumerated in bytes.
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@param Address The physical address of the access.
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@param SetBits Value of the bits to set.
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@param ClearBits Value of the bits to clear.
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@retval EFI_SUCCESS The function completed successfully.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_PCI_CFG_PPI_RW)(
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_PCI_CFG_PPI *This,
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IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
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IN UINT64 Address,
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IN UINTN SetBits,
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IN UINTN ClearBits
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);
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/**
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The EFI_PEI_PCI_CFG_PPI interfaces are used to abstract accesses to PCI
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controllers behind a PCI root bridge controller.
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**/
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struct _EFI_PEI_PCI_CFG_PPI {
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///
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/// PCI read services. See the Read() function description.
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///
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EFI_PEI_PCI_CFG_PPI_IO Read;
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///
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/// PCI write services. See the Write() function description.
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///
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EFI_PEI_PCI_CFG_PPI_IO Write;
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///
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/// PCI read-modify-write services. See the Modify() function description.
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///
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EFI_PEI_PCI_CFG_PPI_RW Modify;
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};
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extern EFI_GUID gEfiPciCfgPpiInServiceTableGuid;
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#endif
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