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Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Ppi/PciCfg2.h')
| -rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Ppi/PciCfg2.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Ppi/PciCfg2.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Ppi/PciCfg2.h new file mode 100644 index 0000000000..ea95478754 --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Ppi/PciCfg2.h @@ -0,0 +1,184 @@ +/** @file + This file declares PciCfg2 PPI. + + This ppi Provides platform or chipset-specific access to + the PCI configuration space for a specific PCI segment. + + Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR> + 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. + + @par Revision Reference: + This PPI is introduced in PI Version 1.0. + +**/ + +#ifndef __PEI_PCI_CFG2_H__ +#define __PEI_PCI_CFG2_H__ + +#include <Library/BaseLib.h> + +#define EFI_PEI_PCI_CFG2_PPI_GUID \ + { 0x57a449a, 0x1fdc, 0x4c06, { 0xbf, 0xc9, 0xf5, 0x3f, 0x6a, 0x99, 0xbb, 0x92 } } + +typedef struct _EFI_PEI_PCI_CFG2_PPI EFI_PEI_PCI_CFG2_PPI; + +#define EFI_PEI_PCI_CFG_ADDRESS(bus,dev,func,reg) \ + (UINT64) ( \ + (((UINTN) bus) << 24) | \ + (((UINTN) dev) << 16) | \ + (((UINTN) func) << 8) | \ + (((UINTN) (reg)) < 256 ? ((UINTN) (reg)) : (UINT64) (LShiftU64 ((UINT64) (reg), 32)))) + +/// +/// EFI_PEI_PCI_CFG_PPI_WIDTH +/// +typedef enum { + /// + /// 8-bit access + /// + EfiPeiPciCfgWidthUint8 = 0, + /// + /// 16-bit access + /// + EfiPeiPciCfgWidthUint16 = 1, + /// + /// 32-bit access + /// + EfiPeiPciCfgWidthUint32 = 2, + /// + /// 64-bit access + /// + EfiPeiPciCfgWidthUint64 = 3, + EfiPeiPciCfgWidthMaximum +} EFI_PEI_PCI_CFG_PPI_WIDTH; + +/// +/// EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS +/// +typedef struct { + /// + /// 8-bit register offset within the PCI configuration space for a given device's function + /// space. + /// + UINT8 Register; + /// + /// Only the 3 least-significant bits are used to encode one of 8 possible functions within a + /// given device. + /// + UINT8 Function; + /// + /// Only the 5 least-significant bits are used to encode one of 32 possible devices. + /// + UINT8 Device; + /// + /// 8-bit value to encode between 0 and 255 buses. + /// + UINT8 Bus; + /// + /// Register number in PCI configuration space. If this field is zero, then Register is used + /// for the register number. If this field is non-zero, then Register is ignored and this field + /// is used for the register number. + /// + UINT32 ExtendedRegister; +} EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS; + +/** + Reads from or 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. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_PEI_PCI_CFG2_PPI_IO)( + 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 +); + + +/** + Performs a read-modify-write operation on the contents + 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. 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. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_PEI_PCI_CFG2_PPI_RW)( + 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 +); + +/// +/// The EFI_PEI_PCI_CFG_PPI interfaces are used to abstract accesses to PCI +/// controllers behind a PCI root bridge controller. +/// +struct _EFI_PEI_PCI_CFG2_PPI { + EFI_PEI_PCI_CFG2_PPI_IO Read; + EFI_PEI_PCI_CFG2_PPI_IO Write; + EFI_PEI_PCI_CFG2_PPI_RW Modify; + /// + /// The PCI bus segment which the specified functions will access. + /// + UINT16 Segment; +}; + + +extern EFI_GUID gEfiPciCfg2PpiGuid; + +#endif |