mirror of https://github.com/acidanthera/audk.git
667 lines
30 KiB
C
667 lines
30 KiB
C
/** @file
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EFI PCI IO protocol functions declaration for PCI Bus module.
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Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
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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 _EFI_PCI_IO_PROTOCOL_H_
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#define _EFI_PCI_IO_PROTOCOL_H_
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/**
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Initializes a PCI I/O Instance.
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@param PciIoDevice Pci device instance.
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**/
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VOID
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InitializePciIoInstance (
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IN PCI_IO_DEVICE *PciIoDevice
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);
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/**
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Verifies access to a PCI Base Address Register (BAR).
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@param PciIoDevice Pci device instance.
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@param BarIndex The BAR index of the standard PCI Configuration header to use as the
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base address for the memory or I/O operation to perform.
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@param Type Operation type could be memory or I/O.
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@param Width Signifies the width of the memory or I/O operations.
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@param Count The number of memory or I/O operations to perform.
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@param Offset The offset within the PCI configuration space for the PCI controller.
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@retval EFI_INVALID_PARAMETER Invalid Width/BarIndex or Bar type.
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@retval EFI_SUCCESS Successfully verified.
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**/
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EFI_STATUS
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PciIoVerifyBarAccess (
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IN PCI_IO_DEVICE *PciIoDevice,
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IN UINT8 BarIndex,
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IN PCI_BAR_TYPE Type,
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IN IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN IN UINTN Count,
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IN UINT64 *Offset
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);
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/**
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Verifies access to a PCI Configuration Header.
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@param PciIoDevice Pci device instance.
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@param Width Signifies the width of the memory or I/O operations.
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@param Count The number of memory or I/O operations to perform.
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@param Offset The offset within the PCI configuration space for the PCI controller.
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@retval EFI_INVALID_PARAMETER Invalid Width
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@retval EFI_UNSUPPORTED Offset overflowed.
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@retval EFI_SUCCESS Successfully verified.
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**/
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EFI_STATUS
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PciIoVerifyConfigAccess (
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IN PCI_IO_DEVICE *PciIoDevice,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINTN Count,
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IN UINT64 *Offset
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);
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/**
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Reads from the memory space of a PCI controller. Returns either when 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_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory or I/O operations.
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@param BarIndex The BAR index of the standard PCI Configuration header to use as the
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base address for the memory operation to perform.
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@param Offset The offset within the selected BAR to start the memory operation.
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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_UNSUPPORTED BarIndex not valid for this PCI controller.
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@retval EFI_UNSUPPORTED Offset is not valid for the BarIndex of this PCI controller.
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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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EFI_STATUS
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EFIAPI
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PciIoPollMem (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT8 BarIndex,
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IN UINT64 Offset,
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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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Reads from the memory space of a PCI controller. Returns either when 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_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory or I/O operations.
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@param BarIndex The BAR index of the standard PCI Configuration header to use as the
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base address for the memory operation to perform.
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@param Offset The offset within the selected BAR to start the memory operation.
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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_UNSUPPORTED BarIndex not valid for this PCI controller.
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@retval EFI_UNSUPPORTED Offset is not valid for the BarIndex of this PCI controller.
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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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EFI_STATUS
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EFIAPI
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PciIoPollIo (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT8 BarIndex,
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IN UINT64 Offset,
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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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Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory or I/O operations.
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@param BarIndex The BAR index of the standard PCI Configuration header to use as the
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base address for the memory or I/O operation to perform.
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@param Offset The offset within the selected BAR to start the memory or I/O operation.
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@param Count The number of memory or I/O 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 controller.
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@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
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@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
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valid for the PCI BAR specified by BarIndex.
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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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EFI_STATUS
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EFIAPI
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PciIoMemRead (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT8 BarIndex,
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IN UINT64 Offset,
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IN UINTN Count,
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IN OUT VOID *Buffer
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);
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/**
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Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory or I/O operations.
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@param BarIndex The BAR index of the standard PCI Configuration header to use as the
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base address for the memory or I/O operation to perform.
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@param Offset The offset within the selected BAR to start the memory or I/O operation.
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@param Count The number of memory or I/O 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 controller.
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@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
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@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
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valid for the PCI BAR specified by BarIndex.
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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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EFI_STATUS
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EFIAPI
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PciIoMemWrite (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT8 BarIndex,
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IN UINT64 Offset,
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IN UINTN Count,
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IN OUT VOID *Buffer
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);
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/**
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Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory or I/O operations.
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@param BarIndex The BAR index of the standard PCI Configuration header to use as the
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base address for the memory or I/O operation to perform.
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@param Offset The offset within the selected BAR to start the memory or I/O operation.
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@param Count The number of memory or I/O 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 controller.
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@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
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@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
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valid for the PCI BAR specified by BarIndex.
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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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EFI_STATUS
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EFIAPI
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PciIoIoRead (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT8 BarIndex,
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IN UINT64 Offset,
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IN UINTN Count,
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IN OUT VOID *Buffer
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);
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/**
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Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory or I/O operations.
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@param BarIndex The BAR index of the standard PCI Configuration header to use as the
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base address for the memory or I/O operation to perform.
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@param Offset The offset within the selected BAR to start the memory or I/O operation.
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@param Count The number of memory or I/O 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 controller.
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@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
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@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
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valid for the PCI BAR specified by BarIndex.
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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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EFI_STATUS
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EFIAPI
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PciIoIoWrite (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT8 BarIndex,
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IN UINT64 Offset,
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IN UINTN Count,
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IN OUT VOID *Buffer
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);
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/**
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Enable a PCI driver to access PCI controller registers in PCI configuration space.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory operations.
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@param Offset The offset within the PCI configuration space for the PCI controller.
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@param Count The number of PCI configuration 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 controller.
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@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
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valid for the PCI configuration header of the PCI controller.
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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 Buffer is NULL or Width is invalid.
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**/
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EFI_STATUS
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EFIAPI
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PciIoConfigRead (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT32 Offset,
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IN UINTN Count,
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IN OUT VOID *Buffer
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);
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/**
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Enable a PCI driver to access PCI controller registers in PCI configuration space.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory operations.
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@param Offset The offset within the PCI configuration space for the PCI controller.
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@param Count The number of PCI configuration 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 controller.
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@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
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valid for the PCI configuration header of the PCI controller.
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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 Buffer is NULL or Width is invalid.
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**/
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EFI_STATUS
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EFIAPI
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PciIoConfigWrite (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT32 Offset,
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IN UINTN Count,
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IN OUT VOID *Buffer
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);
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/**
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Enables a PCI driver to copy one region of PCI memory space to another region of PCI
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memory space.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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@param Width Signifies the width of the memory operations.
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@param DestBarIndex The BAR index in the standard PCI Configuration header to use as the
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base address for the memory operation to perform.
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@param DestOffset The destination offset within the BAR specified by DestBarIndex to
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start the memory writes for the copy operation.
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@param SrcBarIndex The BAR index in the standard PCI Configuration header to use as the
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base address for the memory operation to perform.
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@param SrcOffset The source offset within the BAR specified by SrcBarIndex to start
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the memory reads for the copy operation.
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@param Count The number of memory operations to perform. Bytes moved is Width
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size * Count, starting at DestOffset and SrcOffset.
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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_UNSUPPORTED DestBarIndex not valid for this PCI controller.
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@retval EFI_UNSUPPORTED SrcBarIndex not valid for this PCI controller.
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@retval EFI_UNSUPPORTED The address range specified by DestOffset, Width, and Count
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is not valid for the PCI BAR specified by DestBarIndex.
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@retval EFI_UNSUPPORTED The address range specified by SrcOffset, Width, and Count is
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not valid for the PCI BAR specified by SrcBarIndex.
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@retval EFI_INVALID_PARAMETER Width is 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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**/
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EFI_STATUS
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EFIAPI
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PciIoCopyMem (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
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IN UINT8 DestBarIndex,
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IN UINT64 DestOffset,
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IN UINT8 SrcBarIndex,
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IN UINT64 SrcOffset,
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IN UINTN Count
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);
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/**
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Provides the PCI controller-specific addresses needed to access system memory.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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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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EFI_STATUS
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EFIAPI
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PciIoMap (
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IN EFI_PCI_IO_PROTOCOL *This,
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IN EFI_PCI_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_IO_PROTOCOL instance.
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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_DEVICE_ERROR The data was not committed to the target system memory.
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**/
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EFI_STATUS
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EFIAPI
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PciIoUnmap (
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IN EFI_PCI_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 EfiPciIoOperationBusMasterCommonBuffer
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or EfiPciOperationBusMasterCommonBuffer64 mapping.
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@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
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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, MEMORY_CACHED and DUAL_ADDRESS_CYCLE.
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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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EFI_STATUS
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EFIAPI
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PciIoAllocateBuffer (
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IN EFI_PCI_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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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_IO_PROTOCOL instance.
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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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EFI_STATUS
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EFIAPI
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PciIoFreeBuffer (
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IN EFI_PCI_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_IO_PROTOCOL instance.
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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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EFI_STATUS
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EFIAPI
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PciIoFlush (
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IN EFI_PCI_IO_PROTOCOL *This
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);
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/**
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Retrieves this PCI controller's current PCI bus number, device number, and function number.
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|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param SegmentNumber The PCI controller's current PCI segment number.
|
|
@param BusNumber The PCI controller's current PCI bus number.
|
|
@param DeviceNumber The PCI controller's current PCI device number.
|
|
@param FunctionNumber The PCI controller's current PCI function number.
|
|
|
|
@retval EFI_SUCCESS The PCI controller location was returned.
|
|
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoGetLocation (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
OUT UINTN *Segment,
|
|
OUT UINTN *Bus,
|
|
OUT UINTN *Device,
|
|
OUT UINTN *Function
|
|
);
|
|
|
|
/**
|
|
Check BAR type for PCI resource.
|
|
|
|
@param PciIoDevice PCI device instance.
|
|
@param BarIndex The BAR index of the standard PCI Configuration header to use as the
|
|
base address for the memory or I/O operation to perform.
|
|
@param BarType Memory or I/O.
|
|
|
|
@retval TRUE Pci device's bar type is same with input BarType.
|
|
@retval TRUE Pci device's bar type is not same with input BarType.
|
|
|
|
**/
|
|
BOOLEAN
|
|
CheckBarType (
|
|
IN PCI_IO_DEVICE *PciIoDevice,
|
|
IN UINT8 BarIndex,
|
|
IN PCI_BAR_TYPE BarType
|
|
);
|
|
|
|
/**
|
|
Set/Disable new attributes to a Root Bridge.
|
|
|
|
@param PciIoDevice Pci device instance.
|
|
@param Attributes New attribute want to be set.
|
|
@param Operation Set or Disable.
|
|
|
|
@retval EFI_UNSUPPORTED If root bridge does not support change attribute.
|
|
@retval EFI_SUCCESS Successfully set new attributs.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
ModifyRootBridgeAttributes (
|
|
IN PCI_IO_DEVICE *PciIoDevice,
|
|
IN UINT64 Attributes,
|
|
IN EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION Operation
|
|
);
|
|
|
|
/**
|
|
Check whether this device can be enable/disable to snoop.
|
|
|
|
@param PciIoDevice Pci device instance.
|
|
@param Operation Enable/Disable.
|
|
|
|
@retval EFI_UNSUPPORTED Pci device is not GFX device or not support snoop.
|
|
@retval EFI_SUCCESS Snoop can be supported.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
SupportPaletteSnoopAttributes (
|
|
IN PCI_IO_DEVICE *PciIoDevice,
|
|
IN EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION Operation
|
|
);
|
|
|
|
/**
|
|
Performs an operation on the attributes that this PCI controller supports. The operations include
|
|
getting the set of supported attributes, retrieving the current attributes, setting the current
|
|
attributes, enabling attributes, and disabling attributes.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Operation The operation to perform on the attributes for this PCI controller.
|
|
@param Attributes The mask of attributes that are used for Set, Enable, and Disable
|
|
operations.
|
|
@param Result A pointer to the result mask of attributes that are returned for the Get
|
|
and Supported operations.
|
|
|
|
@retval EFI_SUCCESS The operation on the PCI controller's attributes was completed.
|
|
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
|
@retval EFI_UNSUPPORTED one or more of the bits set in
|
|
Attributes are not supported by this PCI controller or one of
|
|
its parent bridges when Operation is Set, Enable or Disable.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoAttributes (
|
|
IN EFI_PCI_IO_PROTOCOL * This,
|
|
IN EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION Operation,
|
|
IN UINT64 Attributes,
|
|
OUT UINT64 *Result OPTIONAL
|
|
);
|
|
|
|
/**
|
|
Gets the attributes that this PCI controller supports setting on a BAR using
|
|
SetBarAttributes(), and retrieves the list of resource descriptors for a BAR.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param BarIndex The BAR index of the standard PCI Configuration header to use as the
|
|
base address for resource range. The legal range for this field is 0..5.
|
|
@param Supports A pointer to the mask of attributes that this PCI controller supports
|
|
setting for this BAR with SetBarAttributes().
|
|
@param Resources A pointer to the resource descriptors that describe the current
|
|
configuration of this BAR of the PCI controller.
|
|
|
|
@retval EFI_SUCCESS If Supports is not NULL, then the attributes that the PCI
|
|
controller supports are returned in Supports. If Resources
|
|
is not NULL, then the resource descriptors that the PCI
|
|
controller is currently using are returned in Resources.
|
|
@retval EFI_INVALID_PARAMETER Both Supports and Attributes are NULL.
|
|
@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
|
|
@retval EFI_OUT_OF_RESOURCES There are not enough resources available to allocate
|
|
Resources.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoGetBarAttributes (
|
|
IN EFI_PCI_IO_PROTOCOL * This,
|
|
IN UINT8 BarIndex,
|
|
OUT UINT64 *Supports, OPTIONAL
|
|
OUT VOID **Resources OPTIONAL
|
|
);
|
|
|
|
/**
|
|
Sets the attributes for a range of a BAR on a PCI controller.
|
|
|
|
@param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param Attributes The mask of attributes to set for the resource range specified by
|
|
BarIndex, Offset, and Length.
|
|
@param BarIndex The BAR index of the standard PCI Configuration header to use as the
|
|
base address for resource range. The legal range for this field is 0..5.
|
|
@param Offset A pointer to the BAR relative base address of the resource range to be
|
|
modified by the attributes specified by Attributes.
|
|
@param Length A pointer to the length of the resource range to be modified by the
|
|
attributes specified by Attributes.
|
|
|
|
@retval EFI_SUCCESS The set of attributes specified by Attributes for the resource
|
|
range specified by BarIndex, Offset, and Length were
|
|
set on the PCI controller, and the actual resource range is returned
|
|
in Offset and Length.
|
|
@retval EFI_INVALID_PARAMETER Offset or Length is NULL.
|
|
@retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
|
|
@retval EFI_OUT_OF_RESOURCES There are not enough resources to set the attributes on the
|
|
resource range specified by BarIndex, Offset, and
|
|
Length.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PciIoSetBarAttributes (
|
|
IN EFI_PCI_IO_PROTOCOL *This,
|
|
IN UINT64 Attributes,
|
|
IN UINT8 BarIndex,
|
|
IN OUT UINT64 *Offset,
|
|
IN OUT UINT64 *Length
|
|
);
|
|
|
|
|
|
/**
|
|
Test whether two Pci devices has same parent bridge.
|
|
|
|
@param PciDevice1 The first pci device for testing.
|
|
@param PciDevice2 The second pci device for testing.
|
|
|
|
@retval TRUE Two Pci device has the same parent bridge.
|
|
@retval FALSE Two Pci device has not the same parent bridge.
|
|
|
|
**/
|
|
BOOLEAN
|
|
PciDevicesOnTheSamePath (
|
|
IN PCI_IO_DEVICE *PciDevice1,
|
|
IN PCI_IO_DEVICE *PciDevice2
|
|
);
|
|
|
|
#endif
|