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/** @file
Copyright (c) 2006 - 2007, 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.
Module Name:
PciLib.h
Abstract:
PCI Bus Driver Lib header file.
Please use PCD feature flag PcdPciBusHotplugDeviceSupport to enable
support hot plug.
Revision History
**/
#ifndef _EFI_PCI_LIB_H_
#define _EFI_PCI_LIB_H_
//
// Mask definistions for PCD PcdPciIncompatibleDeviceSupportMask
//
#define PCI_INCOMPATIBLE_ACPI_RESOURCE_SUPPORT 0x01
#define PCI_INCOMPATIBLE_READ_SUPPORT 0x02
#define PCI_INCOMPATIBLE_WRITE_SUPPORT 0x04
#define PCI_INCOMPATIBLE_REGISTER_UPDATE_SUPPORT 0x08
#define PCI_INCOMPATIBLE_ACCESS_WIDTH_SUPPORT 0x0a
typedef struct {
EFI_HANDLE Handle;
} EFI_DEVICE_HANDLE_EXTENDED_DATA_PAYLOAD;
typedef struct {
UINT32 Bar;
UINT16 DevicePathSize;
UINT16 ReqResSize;
UINT16 AllocResSize;
UINT8 *DevicePath;
UINT8 *ReqRes;
UINT8 *AllocRes;
} EFI_RESOURCE_ALLOC_FAILURE_ERROR_DATA_PAYLOAD;
/**
Retrieve the BAR information via PciIo interface.
@param PciIoDevice Pci device instance.
**/
VOID
GetBackPcCardBar (
IN PCI_IO_DEVICE *PciIoDevice
);
/**
Remove rejected pci device from specific root bridge
handle.
@param RootBridgeHandle specific parent root bridge handle.
@param Bridge Bridge device instance.
@retval EFI_SUCCESS Success operation.
**/
EFI_STATUS
RemoveRejectedPciDevices (
EFI_HANDLE RootBridgeHandle,
IN PCI_IO_DEVICE *Bridge
);
/**
Wrapper function for allocating resource for pci host bridge.
@param PciResAlloc Point to protocol instance EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
**/
EFI_STATUS
PciHostBridgeResourceAllocator (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
);
/**
Wrapper function for allocating resource for pci host bridge without hotplug device support.
@param PciResAlloc Point to protocol instance EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
**/
EFI_STATUS
PciHostBridgeResourceAllocator_WithoutHotPlugDeviceSupport (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
);
/**
Wrapper function for allocating resource for pci host bridge with hotplug device support.
@param PciResAlloc Point to protocol instance EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
**/
EFI_STATUS
PciHostBridgeResourceAllocator_WithHotPlugDeviceSupport (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
);
/**
Wapper function of scanning pci bus and assign bus number to the given PCI bus system
Feature flag PcdPciBusHotplugDeviceSupport determine whether need support hotplug.
@param Bridge Bridge device instance.
@param StartBusNumber start point.
@param SubBusNumber Point to sub bus number.
@param PaddedBusRange Customized bus number.
@retval EFI_SUCCESS Success.
@retval EFI_DEVICE_ERROR Fail to scan bus.
**/
EFI_STATUS
PciScanBus (
IN PCI_IO_DEVICE *Bridge,
IN UINT8 StartBusNumber,
OUT UINT8 *SubBusNumber,
OUT UINT8 *PaddedBusRange
);
/**
Wapper function of scanning pci bus and assign bus number to the given PCI bus system
Feature flag PcdPciBusHotplugDeviceSupport determine whether need support hotplug.
@param Bridge Bridge device instance.
@param StartBusNumber start point.
@param SubBusNumber Point to sub bus number.
@param PaddedBusRange Customized bus number.
@retval EFI_SUCCESS Success.
@retval EFI_DEVICE_ERROR Fail to scan bus.
**/
EFI_STATUS
PciScanBus_WithHotPlugDeviceSupport (
IN PCI_IO_DEVICE *Bridge,
IN UINT8 StartBusNumber,
OUT UINT8 *SubBusNumber,
OUT UINT8 *PaddedBusRange
);
/**
Wapper function of scanning pci bus and assign bus number to the given PCI bus system
Feature flag PcdPciBusHotplugDeviceSupport determine whether need support hotplug.
@param Bridge Bridge device instance.
@param StartBusNumber start point.
@param SubBusNumber Point to sub bus number.
@param PaddedBusRange Customized bus number.
@retval EFI_SUCCESS Success.
@retval EFI_DEVICE_ERROR Fail to scan bus.
**/
EFI_STATUS
PciScanBus_WithoutHotPlugDeviceSupport (
IN PCI_IO_DEVICE *Bridge,
IN UINT8 StartBusNumber,
OUT UINT8 *SubBusNumber,
OUT UINT8 *PaddedBusRange
);
/**
Process Option Rom on this host bridge.
@param Bridge Pci bridge device instance.
@retval EFI_SUCCESS Success.
**/
EFI_STATUS
PciRootBridgeP2CProcess (
IN PCI_IO_DEVICE *Bridge
);
/**
Process Option Rom on this host bridge.
@param PciResAlloc Pointer to instance of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
@retval EFI_NOT_FOUND Can not find the root bridge instance.
@retval EFI_SUCCESS Success process.
**/
EFI_STATUS
PciHostBridgeP2CProcess (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
);
/**
This function is used to enumerate the entire host bridge
in a given platform.
@param PciResAlloc A pointer to the resource allocate protocol.
@retval EFI_OUT_OF_RESOURCES no enough resource.
@retval EFI_SUCCESS Success.
**/
EFI_STATUS
PciHostBridgeEnumerator (
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
);
/**
Read PCI configuration space through EFI_PCI_IO_PROTOCOL.
@param PciIo A pointer to the EFI_PCI_O_PROTOCOL.
@param Width Signifies the width of the memory operations.
@param Address The address within the PCI configuration space for the PCI controller.
@param Count The number of unit to be read.
@param Buffer For read operations, the destination buffer to store the results. For
write operations, the source buffer to write data from.
@retval EFI_SUCCESS The data was read from or written to the PCI root bridge.
@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
PciIoRead (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
IN UINT32 Address,
IN UINTN Count,
IN OUT VOID *Buffer
);
/**
Write PCI configuration space through EFI_PCI_IO_PROTOCOL.
@param PciIo A pointer to the EFI_PCI_O_PROTOCOL.
@param Width Signifies the width of the memory operations.
@param Address The address within the PCI configuration space for the PCI controller.
@param Count The number of unit to be write.
@param Buffer For read operations, the destination buffer to store the results. For
write operations, the source buffer to write data from.
@retval EFI_SUCCESS The data was read from or written to the PCI root bridge.
@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
PciIoWrite (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
IN UINT32 Address,
IN UINTN Count,
IN OUT VOID *Buffer
);
/**
Write PCI configuration space through EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
@param PciRootBridgeIo A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
@param Pci A pointer to PCI_TYPE00.
@param Width Signifies the width of the memory operations.
@param Address The address within the PCI configuration space for the PCI controller.
@param Count The number of unit to be write.
@param Buffer For read operations, the destination buffer to store the results. For
write operations, the source buffer to write data from.
@retval EFI_SUCCESS The data was read from or written to the PCI root bridge.
@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
PciRootBridgeIoWrite (
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo,
IN PCI_TYPE00 *Pci,
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN OUT VOID *Buffer
);
/**
Read PCI configuration space through EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
@param PciRootBridgeIo A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
@param Pci A pointer to PCI_TYPE00.
@param Width Signifies the width of the memory operations.
@param Address The address within the PCI configuration space for the PCI controller.
@param Count The number of unit to be read.
@param Buffer For read operations, the destination buffer to store the results. For
write operations, the source buffer to write data from.
@retval EFI_SUCCESS The data was read from or written to the PCI root bridge.
@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
PciRootBridgeIoRead (
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo,
IN PCI_TYPE00 *Pci, OPTIONAL
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN OUT VOID *Buffer
);
#endif
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