mirror of https://github.com/acidanthera/audk.git
383 lines
20 KiB
C
383 lines
20 KiB
C
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/** @file
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PCI Root Bridge I/O protocol as defined in the EFI 1.1 specification.
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PCI Root Bridge I/O protocol is used by PCI Bus Driver to perform PCI Memory, PCI I/O,
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and PCI Configuration cycles on a PCI Root Bridge. It also provides services to perform
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defferent types of bus mastering DMA
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Copyright (c) 2006, Intel Corporation
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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 __PCI_ROOT_BRIDGE_IO_H__
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#define __PCI_ROOT_BRIDGE_IO_H__
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#define EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID \
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{ \
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0x2f707ebb, 0x4a1a, 0x11d4, {0x9a, 0x38, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \
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}
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typedef struct _EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL;
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typedef enum {
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EfiPciWidthUint8,
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EfiPciWidthUint16,
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EfiPciWidthUint32,
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EfiPciWidthUint64,
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EfiPciWidthFifoUint8,
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EfiPciWidthFifoUint16,
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EfiPciWidthFifoUint32,
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EfiPciWidthFifoUint64,
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EfiPciWidthFillUint8,
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EfiPciWidthFillUint16,
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EfiPciWidthFillUint32,
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EfiPciWidthFillUint64,
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EfiPciWidthMaximum
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} EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH;
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typedef enum {
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EfiPciOperationBusMasterRead,
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EfiPciOperationBusMasterWrite,
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EfiPciOperationBusMasterCommonBuffer,
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EfiPciOperationBusMasterRead64,
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EfiPciOperationBusMasterWrite64,
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EfiPciOperationBusMasterCommonBuffer64,
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EfiPciOperationMaximum
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} EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION;
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#define EFI_PCI_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
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#define EFI_PCI_ATTRIBUTE_ISA_IO 0x0002
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#define EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO 0x0004
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#define EFI_PCI_ATTRIBUTE_VGA_MEMORY 0x0008
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#define EFI_PCI_ATTRIBUTE_VGA_IO 0x0010
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#define EFI_PCI_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
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#define EFI_PCI_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
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#define EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
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#define EFI_PCI_ATTRIBUTE_MEMORY_CACHED 0x0800
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#define EFI_PCI_ATTRIBUTE_MEMORY_DISABLE 0x1000
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#define EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
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#define EFI_PCI_ATTRIBUTE_VALID_FOR_ALLOCATE_BUFFER (EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE | EFI_PCI_ATTRIBUTE_MEMORY_CACHED | EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE)
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#define EFI_PCI_ATTRIBUTE_INVALID_FOR_ALLOCATE_BUFFER (~EFI_PCI_ATTRIBUTE_VALID_FOR_ALLOCATE_BUFFER)
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#define EFI_PCI_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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typedef struct {
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UINT8 Register;
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UINT8 Function;
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UINT8 Device;
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UINT8 Bus;
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UINT32 ExtendedRegister;
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} EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS;
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/**
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Reads from the I/O space of a PCI Root Bridge. Returns when either the polling exit criteria is
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satisfied or after a defined duration.
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@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
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@param Width Signifies the width of the memory or I/O operations.
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@param Address The base address of the memory or I/O operations.
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@param Mask Mask used for the polling criteria.
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@param Value The comparison value used for the polling exit criteria.
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@param Delay The number of 100 ns units to poll.
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@param Result Pointer to the last value read from the memory location.
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@retval EFI_SUCCESS The last data returned from the access matched the poll exit criteria.
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@retval EFI_TIMEOUT Delay expired before a match occurred.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_POLL_IO_MEM) (
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
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IN UINT64 Address,
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IN UINT64 Mask,
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IN UINT64 Value,
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IN UINT64 Delay,
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OUT UINT64 *Result
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);
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/**
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Enables a PCI driver to access PCI controller registers in the PCI root bridge memory space.
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@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
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@param Width Signifies the width of the memory operations.
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@param Address The base address of the memory operations.
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@param Count The number of memory operations to perform.
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@param Buffer For read operations, the destination buffer to store the results. For write
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operations, the source buffer to write data from.
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@retval EFI_SUCCESS The data was read from or written to the PCI root bridge.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_IO_MEM) (
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
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IN UINT64 Address,
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IN UINTN Count,
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IN OUT VOID *Buffer
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);
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typedef struct {
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EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_IO_MEM Read;
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EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_IO_MEM Write;
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} EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ACCESS;
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/**
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Enables a PCI driver to copy one region of PCI root bridge memory space to another region of PCI
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root bridge memory space.
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@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory operations.
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@param DestAddress The destination address of the memory operation.
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@param SrcAddress The source address of the memory operation.
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@param Count The number of memory operations to perform.
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@retval EFI_SUCCESS The data was copied from one memory region to another memory region.
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@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_COPY_MEM) (
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
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IN UINT64 DestAddress,
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IN UINT64 SrcAddress,
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IN UINTN Count
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);
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/**
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Provides the PCI controller-Cspecific addresses required to access system memory from a
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DMA bus master.
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@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
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@param Operation Indicates if the bus master is going to read or write to system memory.
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@param HostAddress The system memory address to map to the PCI controller.
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@param NumberOfBytes On input the number of bytes to map. On output the number of bytes
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that were mapped.
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@param DeviceAddress The resulting map address for the bus master PCI controller to use to
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access the hosts HostAddress.
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@param Mapping A resulting value to pass to Unmap().
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@retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.
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@retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.
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@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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@retval EFI_DEVICE_ERROR The system hardware could not map the requested address.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_MAP) (
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION Operation,
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IN VOID *HostAddress,
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IN OUT UINTN *NumberOfBytes,
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OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
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OUT VOID **Mapping
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);
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/**
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Completes the Map() operation and releases any corresponding resources.
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@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
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@param Mapping The mapping value returned from Map().
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@retval EFI_SUCCESS The range was unmapped.
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@retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by Map().
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@retval EFI_DEVICE_ERROR The data was not committed to the target system memory.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_UNMAP) (
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
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IN VOID *Mapping
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);
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/**
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Allocates pages that are suitable for an EfiPciOperationBusMasterCommonBuffer or
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EfiPciOperationBusMasterCommonBuffer64 mapping.
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@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
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@param Type This parameter is not used and must be ignored.
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@param MemoryType The type of memory to allocate, EfiBootServicesData or
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EfiRuntimeServicesData.
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@param Pages The number of pages to allocate.
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@param HostAddress A pointer to store the base system memory address of the
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allocated range.
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@param Attributes The requested bit mask of attributes for the allocated range.
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@retval EFI_SUCCESS The requested memory pages were allocated.
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@retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are
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MEMORY_WRITE_COMBINE and MEMORY_CACHED.
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@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
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@retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ALLOCATE_BUFFER) (
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
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IN EFI_ALLOCATE_TYPE Type,
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN Pages,
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IN OUT VOID **HostAddress,
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IN UINT64 Attributes
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);
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/**
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Frees memory that was allocated with AllocateBuffer().
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@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
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@param Pages The number of pages to free.
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@param HostAddress The base system memory address of the allocated range.
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@retval EFI_SUCCESS The requested memory pages were freed.
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@retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages
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was not allocated with AllocateBuffer().
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_FREE_BUFFER) (
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
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IN UINTN Pages,
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IN VOID *HostAddress
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);
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/**
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Flushes all PCI posted write transactions from a PCI host bridge to system memory.
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@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
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@retval EFI_SUCCESS The PCI posted write transactions were flushed from the PCI host
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bridge to system memory.
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@retval EFI_DEVICE_ERROR The PCI posted write transactions were not flushed from the PCI
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host bridge due to a hardware error.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_FLUSH) (
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This
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);
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/**
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Gets the attributes that a PCI root bridge supports setting with SetAttributes(), and the
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attributes that a PCI root bridge is currently using.
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@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
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@param Supports A pointer to the mask of attributes that this PCI root bridge supports
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setting with SetAttributes().
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@param Attributes A pointer to the mask of attributes that this PCI root bridge is currently
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using.
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@retval EFI_SUCCESS If Supports is not NULL, then the attributes that the PCI root
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bridge supports is returned in Supports. If Attributes is
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not NULL, then the attributes that the PCI root bridge is currently
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using is returned in Attributes.
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@retval EFI_INVALID_PARAMETER Both Supports and Attributes are NULL.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GET_ATTRIBUTES) (
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
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OUT UINT64 *Supports,
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OUT UINT64 *Attributes
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);
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/**
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Sets attributes for a resource range on a PCI root bridge.
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@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
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@param Attributes The mask of attributes to set.
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@param ResourceBase A pointer to the base address of the resource range to be modified by the
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attributes specified by Attributes.
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@param ResourceLength A pointer to the length of the resource range to be modified by the
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attributes specified by Attributes.
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@retval EFI_SUCCESS The set of attributes specified by Attributes for the resource
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range specified by ResourceBase and ResourceLength
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were set on the PCI root bridge, and the actual resource range is
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returned in ResuourceBase and ResourceLength.
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@retval EFI_UNSUPPORTED A bit is set in Attributes that is not supported by the PCI Root
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Bridge.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources to set the attributes on the
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resource range specified by BaseAddress and Length.
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@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_SET_ATTRIBUTES) (
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
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IN UINT64 Attributes,
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IN OUT UINT64 *ResourceBase,
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IN OUT UINT64 *ResourceLength
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);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Retrieves the current resource settings of this PCI root bridge in the form of a set of ACPI 2.0
|
||
|
|
resource descriptors.
|
||
|
|
|
||
|
|
@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
|
||
|
|
@param Resources A pointer to the ACPI 2.0 resource descriptors that describe the current
|
||
|
|
configuration of this PCI root bridge.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The current configuration of this PCI root bridge was returned in
|
||
|
|
Resources.
|
||
|
|
@retval EFI_UNSUPPORTED The current configuration of this PCI root bridge could not be
|
||
|
|
retrieved.
|
||
|
|
|
||
|
|
**/
|
||
|
|
typedef
|
||
|
|
EFI_STATUS
|
||
|
|
(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_CONFIGURATION) (
|
||
|
|
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
|
||
|
|
OUT VOID **Resources
|
||
|
|
);
|
||
|
|
|
||
|
|
struct _EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL {
|
||
|
|
EFI_HANDLE ParentHandle;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_POLL_IO_MEM PollMem;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_POLL_IO_MEM PollIo;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ACCESS Mem;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ACCESS Io;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ACCESS Pci;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_COPY_MEM CopyMem;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_MAP Map;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_UNMAP Unmap;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ALLOCATE_BUFFER AllocateBuffer;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_FREE_BUFFER FreeBuffer;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_FLUSH Flush;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GET_ATTRIBUTES GetAttributes;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_SET_ATTRIBUTES SetAttributes;
|
||
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_CONFIGURATION Configuration;
|
||
|
|
UINT32 SegmentNumber;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern EFI_GUID gEfiPciRootBridgeIoProtocolGuid;
|
||
|
|
|
||
|
|
#endif
|