mirror of https://github.com/acidanthera/audk.git
61 lines
2.3 KiB
C
61 lines
2.3 KiB
C
/** @file
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This PPI is the same as the PPI in the framework PciCfg, with one exception.
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Specifically, this PPI does not include a modify API, while the PPI in the framework PciCfg does.
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Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved<BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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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/PciCfg.h>
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#define ECP_PEI_PCI_CFG_PPI_GUID \
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{0xb0ee53d4, 0xa049, 0x4a79, { 0xb2, 0xff, 0x19, 0xd9, 0xfa, 0xef, 0xaa, 0x94}}
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typedef struct _ECP_PEI_PCI_CFG_PPI ECP_PEI_PCI_CFG_PPI;
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/**
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A PCI read and write operation.
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Writes to, or reads from, a given location in the PCI configuration space.
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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. The format of
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the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
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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_DEVICE_ERROR There was a problem with the transaction.
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@retval EFI_DEVICE_NOT_READY The device is not capable of supporting the
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operation at this time.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *ECP_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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struct _ECP_PEI_PCI_CFG_PPI {
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ECP_PEI_PCI_CFG_PPI_IO Read;
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ECP_PEI_PCI_CFG_PPI_IO Write;
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};
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extern EFI_GUID gEcpPeiPciCfgPpiGuid;
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#endif
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