PciRootBridgeIo.h File Reference

PCI Root Bridge I/O protocol as defined in the UEFI 2.0 specification. More...

Go to the source code of this file.

Data Structures

struct  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS
struct  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ACCESS
struct  _EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
 Provides the basic Memory, I/O, PCI configuration, and DMA interfaces that are used to abstract accesses to PCI controllers behind a PCI Root Bridge Controller. More...

Defines

#define EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID
#define EFI_PCI_ATTRIBUTE_ISA_MOTHERBOARD_IO   0x0001
#define EFI_PCI_ATTRIBUTE_ISA_IO   0x0002
#define EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO   0x0004
#define EFI_PCI_ATTRIBUTE_VGA_MEMORY   0x0008
#define EFI_PCI_ATTRIBUTE_VGA_IO   0x0010
#define EFI_PCI_ATTRIBUTE_IDE_PRIMARY_IO   0x0020
#define EFI_PCI_ATTRIBUTE_IDE_SECONDARY_IO   0x0040
#define EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE   0x0080
#define EFI_PCI_ATTRIBUTE_MEMORY_CACHED   0x0800
#define EFI_PCI_ATTRIBUTE_MEMORY_DISABLE   0x1000
#define EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE   0x8000
#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)
#define EFI_PCI_ATTRIBUTE_INVALID_FOR_ALLOCATE_BUFFER   (~EFI_PCI_ATTRIBUTE_VALID_FOR_ALLOCATE_BUFFER)
#define EFI_PCI_ADDRESS(bus, dev, func, reg)   ((UINT64) ((((UINTN) bus) << 24) + (((UINTN) dev) << 16) + (((UINTN) func) << 8) + ((UINTN) reg)))

Typedefs

typedef struct
_EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL 
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_POLL_IO_MEM )(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, IN UINT64 Address, IN UINT64 Mask, IN UINT64 Value, IN UINT64 Delay, OUT UINT64 *Result)
 Reads from the I/O space of a PCI Root Bridge.
typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_IO_MEM )(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, IN UINT64 Address, IN UINTN Count, IN OUT VOID *Buffer)
 Enables a PCI driver to access PCI controller registers in the PCI root bridge memory space.
typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_COPY_MEM )(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, IN UINT64 DestAddress, IN UINT64 SrcAddress, IN UINTN Count)
 Enables a PCI driver to copy one region of PCI root bridge memory space to another region of PCI root bridge memory space.
typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_MAP )(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION Operation, IN VOID *HostAddress, IN OUT UINTN *NumberOfBytes, OUT EFI_PHYSICAL_ADDRESS *DeviceAddress, OUT VOID **Mapping)
 Provides the PCI controller-Cspecific addresses required to access system memory from a DMA bus master.
typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_UNMAP )(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN VOID *Mapping)
 Completes the Map() operation and releases any corresponding resources.
typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ALLOCATE_BUFFER )(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN EFI_ALLOCATE_TYPE Type, IN EFI_MEMORY_TYPE MemoryType, IN UINTN Pages, IN OUT VOID **HostAddress, IN UINT64 Attributes)
 Allocates pages that are suitable for an EfiPciOperationBusMasterCommonBuffer or EfiPciOperationBusMasterCommonBuffer64 mapping.
typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_FREE_BUFFER )(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN UINTN Pages, IN VOID *HostAddress)
 Frees memory that was allocated with AllocateBuffer().
typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_FLUSH )(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This)
 Flushes all PCI posted write transactions from a PCI host bridge to system memory.
typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GET_ATTRIBUTES )(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, OUT UINT64 *Supports, OUT UINT64 *Attributes)
 Gets the attributes that a PCI root bridge supports setting with SetAttributes(), and the attributes that a PCI root bridge is currently using.
typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_SET_ATTRIBUTES )(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN UINT64 Attributes, IN OUT UINT64 *ResourceBase, IN OUT UINT64 *ResourceLength)
 Sets attributes for a resource range on a PCI root bridge.
typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_CONFIGURATION )(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, OUT VOID **Resources)
 Retrieves the current resource settings of this PCI root bridge in the form of a set of ACPI 2.0 resource descriptors.

Enumerations

enum  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH {
  EfiPciWidthUint8, EfiPciWidthUint16, EfiPciWidthUint32, EfiPciWidthUint64,
  EfiPciWidthFifoUint8, EfiPciWidthFifoUint16, EfiPciWidthFifoUint32, EfiPciWidthFifoUint64,
  EfiPciWidthFillUint8, EfiPciWidthFillUint16, EfiPciWidthFillUint32, EfiPciWidthFillUint64,
  EfiPciWidthMaximum
}
enum  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION {
  EfiPciOperationBusMasterRead, EfiPciOperationBusMasterWrite, EfiPciOperationBusMasterCommonBuffer, EfiPciOperationBusMasterRead64,
  EfiPciOperationBusMasterWrite64, EfiPciOperationBusMasterCommonBuffer64, EfiPciOperationMaximum
}

Variables

EFI_GUID gEfiPciRootBridgeIoProtocolGuid


Detailed Description

PCI Root Bridge I/O protocol as defined in the UEFI 2.0 specification.

PCI Root Bridge I/O protocol is used by PCI Bus Driver to perform PCI Memory, PCI I/O, and PCI Configuration cycles on a PCI Root Bridge. It also provides services to perform defferent types of bus mastering DMA

Copyright (c) 2006 - 2008, 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.

Definition in file PciRootBridgeIo.h.


Define Documentation

#define EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID

Value:

{ \
    0x2f707ebb, 0x4a1a, 0x11d4, {0x9a, 0x38, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \
  }

Definition at line 22 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_ISA_MOTHERBOARD_IO   0x0001

Definition at line 55 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_ISA_IO   0x0002

Definition at line 56 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO   0x0004

Definition at line 57 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_VGA_MEMORY   0x0008

Definition at line 58 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_VGA_IO   0x0010

Definition at line 59 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_IDE_PRIMARY_IO   0x0020

Definition at line 60 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_IDE_SECONDARY_IO   0x0040

Definition at line 61 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE   0x0080

Definition at line 62 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_MEMORY_CACHED   0x0800

Definition at line 63 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_MEMORY_DISABLE   0x1000

Definition at line 64 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE   0x8000

Definition at line 65 of file PciRootBridgeIo.h.

#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)

Definition at line 67 of file PciRootBridgeIo.h.

#define EFI_PCI_ATTRIBUTE_INVALID_FOR_ALLOCATE_BUFFER   (~EFI_PCI_ATTRIBUTE_VALID_FOR_ALLOCATE_BUFFER)

Definition at line 69 of file PciRootBridgeIo.h.

#define EFI_PCI_ADDRESS ( bus,
dev,
func,
reg   )     ((UINT64) ((((UINTN) bus) << 24) + (((UINTN) dev) << 16) + (((UINTN) func) << 8) + ((UINTN) reg)))

Definition at line 71 of file PciRootBridgeIo.h.

Referenced by efipci_address().


Typedef Documentation

Definition at line 27 of file PciRootBridgeIo.h.

Reads from the I/O space of a PCI Root Bridge.

Returns when either the polling exit criteria is satisfied or after a defined duration.

Parameters:
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
Width Signifies the width of the memory or I/O operations.
Address The base address of the memory or I/O operations.
Mask Mask used for the polling criteria.
Value The comparison value used for the polling exit criteria.
Delay The number of 100 ns units to poll.
Result Pointer to the last value read from the memory location.
Return values:
EFI_SUCCESS The last data returned from the access matched the poll exit criteria.
EFI_TIMEOUT Delay expired before a match occurred.
EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
EFI_INVALID_PARAMETER One or more parameters are invalid.

Definition at line 102 of file PciRootBridgeIo.h.

Enables a PCI driver to access PCI controller registers in the PCI root bridge memory space.

Parameters:
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
Width Signifies the width of the memory operations.
Address The base address of the memory operations.
Count The number of memory operations to perform.
Buffer For read operations, the destination buffer to store the results. For write operations, the source buffer to write data from.
Return values:
EFI_SUCCESS The data was read from or written to the PCI root bridge.
EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
EFI_INVALID_PARAMETER One or more parameters are invalid.

Definition at line 129 of file PciRootBridgeIo.h.

Enables a PCI driver to copy one region of PCI root bridge memory space to another region of PCI root bridge memory space.

Parameters:
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.
Width Signifies the width of the memory operations.
DestAddress The destination address of the memory operation.
SrcAddress The source address of the memory operation.
Count The number of memory operations to perform.
Return values:
EFI_SUCCESS The data was copied from one memory region to another memory region.
EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.

Definition at line 159 of file PciRootBridgeIo.h.

typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_MAP)(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION Operation, IN VOID *HostAddress, IN OUT UINTN *NumberOfBytes, OUT EFI_PHYSICAL_ADDRESS *DeviceAddress, OUT VOID **Mapping)

Provides the PCI controller-Cspecific addresses required to access system memory from a DMA bus master.

Parameters:
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
Operation Indicates if the bus master is going to read or write to system memory.
HostAddress The system memory address to map to the PCI controller.
NumberOfBytes On input the number of bytes to map. On output the number of bytes that were mapped.
DeviceAddress The resulting map address for the bus master PCI controller to use to access the hosts HostAddress.
Mapping A resulting value to pass to Unmap().
Return values:
EFI_SUCCESS The range was mapped for the returned NumberOfBytes.
EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.
EFI_INVALID_PARAMETER One or more parameters are invalid.
EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
EFI_DEVICE_ERROR The system hardware could not map the requested address.

Definition at line 189 of file PciRootBridgeIo.h.

Completes the Map() operation and releases any corresponding resources.

Parameters:
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
Mapping The mapping value returned from Map().
Return values:
EFI_SUCCESS The range was unmapped.
EFI_INVALID_PARAMETER Mapping is not a value that was returned by Map().
EFI_DEVICE_ERROR The data was not committed to the target system memory.

Definition at line 211 of file PciRootBridgeIo.h.

typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ALLOCATE_BUFFER)(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN EFI_ALLOCATE_TYPE Type, IN EFI_MEMORY_TYPE MemoryType, IN UINTN Pages, IN OUT VOID **HostAddress, IN UINT64 Attributes)

Allocates pages that are suitable for an EfiPciOperationBusMasterCommonBuffer or EfiPciOperationBusMasterCommonBuffer64 mapping.

Parameters:
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
Type This parameter is not used and must be ignored.
MemoryType The type of memory to allocate, EfiBootServicesData or EfiRuntimeServicesData.
Pages The number of pages to allocate.
HostAddress A pointer to store the base system memory address of the allocated range.
Attributes The requested bit mask of attributes for the allocated range.
Return values:
EFI_SUCCESS The requested memory pages were allocated.
EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are MEMORY_WRITE_COMBINE and MEMORY_CACHED.
EFI_INVALID_PARAMETER One or more parameters are invalid.
EFI_OUT_OF_RESOURCES The memory pages could not be allocated.

Definition at line 238 of file PciRootBridgeIo.h.

typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_FREE_BUFFER)(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN UINTN Pages, IN VOID *HostAddress)

Frees memory that was allocated with AllocateBuffer().

Parameters:
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
Pages The number of pages to free.
HostAddress The base system memory address of the allocated range.
Return values:
EFI_SUCCESS The requested memory pages were freed.
EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages was not allocated with AllocateBuffer().

Definition at line 261 of file PciRootBridgeIo.h.

Flushes all PCI posted write transactions from a PCI host bridge to system memory.

Parameters:
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
Return values:
EFI_SUCCESS The PCI posted write transactions were flushed from the PCI host bridge to system memory.
EFI_DEVICE_ERROR The PCI posted write transactions were not flushed from the PCI host bridge due to a hardware error.

Definition at line 280 of file PciRootBridgeIo.h.

typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GET_ATTRIBUTES)(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, OUT UINT64 *Supports, OUT UINT64 *Attributes)

Gets the attributes that a PCI root bridge supports setting with SetAttributes(), and the attributes that a PCI root bridge is currently using.

Parameters:
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
Supports A pointer to the mask of attributes that this PCI root bridge supports setting with SetAttributes().
Attributes A pointer to the mask of attributes that this PCI root bridge is currently using.
Return values:
EFI_SUCCESS If Supports is not NULL, then the attributes that the PCI root bridge supports is returned in Supports. If Attributes is not NULL, then the attributes that the PCI root bridge is currently using is returned in Attributes.
EFI_INVALID_PARAMETER Both Supports and Attributes are NULL.

Definition at line 304 of file PciRootBridgeIo.h.

typedef EFI_STATUS(EFIAPI * EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_SET_ATTRIBUTES)(IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, IN UINT64 Attributes, IN OUT UINT64 *ResourceBase, IN OUT UINT64 *ResourceLength)

Sets attributes for a resource range on a PCI root bridge.

Parameters:
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
Attributes The mask of attributes to set.
ResourceBase A pointer to the base address of the resource range to be modified by the attributes specified by Attributes.
ResourceLength A pointer to the length of the resource range to be modified by the attributes specified by Attributes.
Return values:
EFI_SUCCESS The set of attributes specified by Attributes for the resource range specified by ResourceBase and ResourceLength were set on the PCI root bridge, and the actual resource range is returned in ResuourceBase and ResourceLength.
EFI_UNSUPPORTED A bit is set in Attributes that is not supported by the PCI Root Bridge.
EFI_OUT_OF_RESOURCES There are not enough resources to set the attributes on the resource range specified by BaseAddress and Length.
EFI_INVALID_PARAMETER One or more parameters are invalid.

Definition at line 333 of file PciRootBridgeIo.h.

Retrieves the current resource settings of this PCI root bridge in the form of a set of ACPI 2.0 resource descriptors.

Parameters:
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
Resources A pointer to the ACPI 2.0 resource descriptors that describe the current configuration of this PCI root bridge.
Return values:
EFI_SUCCESS The current configuration of this PCI root bridge was returned in Resources.
EFI_UNSUPPORTED The current configuration of this PCI root bridge could not be retrieved.

Definition at line 356 of file PciRootBridgeIo.h.


Enumeration Type Documentation

Enumerator:
EfiPciWidthUint8 
EfiPciWidthUint16 
EfiPciWidthUint32 
EfiPciWidthUint64 
EfiPciWidthFifoUint8 
EfiPciWidthFifoUint16 
EfiPciWidthFifoUint32 
EfiPciWidthFifoUint64 
EfiPciWidthFillUint8 
EfiPciWidthFillUint16 
EfiPciWidthFillUint32 
EfiPciWidthFillUint64 
EfiPciWidthMaximum 

Definition at line 29 of file PciRootBridgeIo.h.

Enumerator:
EfiPciOperationBusMasterRead 
EfiPciOperationBusMasterWrite 
EfiPciOperationBusMasterCommonBuffer 
EfiPciOperationBusMasterRead64 
EfiPciOperationBusMasterWrite64 
EfiPciOperationBusMasterCommonBuffer64 
EfiPciOperationMaximum 

Definition at line 45 of file PciRootBridgeIo.h.


Variable Documentation


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