From 8d415937c88a66b710e2a0cea7913a332d92cbe7 Mon Sep 17 00:00:00 2001 From: klu2 Date: Mon, 4 Jan 2010 04:36:37 +0000 Subject: Add default implementation of EFI_CPU_IO_PPI and EFI_PCI_CFG2_PPI for EFI_SERVICES_TABLE. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9662 6f19259b-4bc3-4df7-8a09-765794883524 --- MdeModulePkg/Core/Pei/PciCfg2/PciCfg2.c | 128 ++++++++++++++++++++++++++++++++ 1 file changed, 128 insertions(+) create mode 100644 MdeModulePkg/Core/Pei/PciCfg2/PciCfg2.c (limited to 'MdeModulePkg/Core/Pei/PciCfg2') diff --git a/MdeModulePkg/Core/Pei/PciCfg2/PciCfg2.c b/MdeModulePkg/Core/Pei/PciCfg2/PciCfg2.c new file mode 100644 index 0000000000..419f96e4c9 --- /dev/null +++ b/MdeModulePkg/Core/Pei/PciCfg2/PciCfg2.c @@ -0,0 +1,128 @@ +/** @file + The default version of EFI_PEI_PCI_CFG2_PPI support published by PeiServices in + PeiCore initialization phase. + + EFI_PEI_PCI_CFG2_PPI is installed by the PEIM which supports a PCI root bridge. + When PeiCore is started, the default version of EFI_PEI_PCI_CFG2_PPI will be assigned + to PeiServices table. + +Copyright (c) 2009, 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. + +**/ + +#include "PeiMain.h" + +/// +/// This default instance of EFI_PEI_PCI_CFG2_PPI install assigned to EFI_PEI_SERVICE.PciCfg +/// when PeiCore's initialization. +/// +EFI_PEI_PCI_CFG2_PPI gPeiDefaultPciCfg2Ppi = { + PeiDefaultPciCfg2Read, + PeiDefaultPciCfg2Write, + PeiDefaultPciCfg2Modify +}; + +/** + Reads from a given location in the PCI configuration space. + + If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then + return EFI_NOT_YET_AVAILABLE. + + @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_INVALID_PARAMETER The invalid access width. + @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM. + +**/ +EFI_STATUS +EFIAPI +PeiDefaultPciCfg2Read ( + IN CONST EFI_PEI_SERVICES **PeiServices, + IN CONST EFI_PEI_PCI_CFG2_PPI *This, + IN EFI_PEI_PCI_CFG_PPI_WIDTH Width, + IN UINT64 Address, + IN OUT VOID *Buffer + ) +{ + return EFI_NOT_AVAILABLE_YET; +} + +/** + Write to a given location in the PCI configuration space. + + If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then + return EFI_NOT_YET_AVAILABLE. + + @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_INVALID_PARAMETER The invalid access width. + @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM. +**/ +EFI_STATUS +EFIAPI +PeiDefaultPciCfg2Write ( + IN CONST EFI_PEI_SERVICES **PeiServices, + IN CONST EFI_PEI_PCI_CFG2_PPI *This, + IN EFI_PEI_PCI_CFG_PPI_WIDTH Width, + IN UINT64 Address, + IN OUT VOID *Buffer + ) +{ + return EFI_NOT_AVAILABLE_YET; +} + +/** + This function performs a read-modify-write operation on the contents from a given + location in the PCI configuration space. + If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then + return EFI_NOT_YET_AVAILABLE. + + @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_INVALID_PARAMETER The invalid access width. + @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM. +**/ +EFI_STATUS +EFIAPI +PeiDefaultPciCfg2Modify ( + IN CONST EFI_PEI_SERVICES **PeiServices, + IN CONST EFI_PEI_PCI_CFG2_PPI *This, + IN EFI_PEI_PCI_CFG_PPI_WIDTH Width, + IN UINT64 Address, + IN VOID *SetBits, + IN VOID *ClearBits + ) +{ + return EFI_NOT_AVAILABLE_YET; +} -- cgit v1.2.3