PciCommand.c File Reference

#include "PciBus.h"

Go to the source code of this file.

Functions
EFI_STATUS	PciOperateRegister (IN PCI_IO_DEVICE *PciIoDevice, IN UINT16 Command, IN UINT8 Offset, IN UINT8 Operation, OUT UINT16 *PtrCommand)
BOOLEAN	PciCapabilitySupport (IN PCI_IO_DEVICE *PciIoDevice)
EFI_STATUS	LocateCapabilityRegBlock (IN PCI_IO_DEVICE *PciIoDevice, IN UINT8 CapId, IN OUT UINT8 *Offset, OUT UINT8 *NextRegBlock OPTIONAL)
EFI_STATUS	LocatePciExpressCapabilityRegBlock (IN PCI_IO_DEVICE *PciIoDevice, IN UINT16 CapId, IN OUT UINT32 *Offset, OUT UINT32 *NextRegBlock OPTIONAL)

Detailed Description

PCI command register operations supporting functions implementation for PCI Bus module.

Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file PciCommand.c.

Function Documentation

LocateCapabilityRegBlock()

EFI_STATUS LocateCapabilityRegBlock	(	IN PCI_IO_DEVICE *	PciIoDevice,
		IN UINT8	CapId,
		IN OUT UINT8 *	Offset,
		OUT UINT8 *NextRegBlock	OPTIONAL
	)

Locate capability register block per capability ID.

Parameters

PciIoDevice	A pointer to the PCI_IO_DEVICE.
CapId	The capability ID.
Offset	A pointer to the offset returned.
NextRegBlock	A pointer to the next block returned.

Return values

EFI_SUCCESS	Successfully located capability register block.
EFI_UNSUPPORTED	Pci device does not support capability.
EFI_NOT_FOUND	Pci device support but can not find register block.

Definition at line 106 of file PciCommand.c.

LocatePciExpressCapabilityRegBlock()

EFI_STATUS LocatePciExpressCapabilityRegBlock	(	IN PCI_IO_DEVICE *	PciIoDevice,
		IN UINT16	CapId,
		IN OUT UINT32 *	Offset,
		OUT UINT32 *NextRegBlock	OPTIONAL
	)

Locate PciExpress capability register block per capability ID.

Parameters

PciIoDevice	A pointer to the PCI_IO_DEVICE.
CapId	The capability ID.
Offset	A pointer to the offset returned.
NextRegBlock	A pointer to the next block returned.

Return values

EFI_SUCCESS	Successfully located capability register block.
EFI_UNSUPPORTED	Pci device does not support capability.
EFI_NOT_FOUND	Pci device support but can not find register block.

Definition at line 195 of file PciCommand.c.

PciCapabilitySupport()

BOOLEAN PciCapabilitySupport

(

IN PCI_IO_DEVICE *

PciIoDevice

)

Check the capability supporting by given device.

Parameters

PciIoDevice

Pointer to instance of PCI_IO_DEVICE.

Return values

TRUE	Capability supported.
FALSE	Capability not supported.

Definition at line 81 of file PciCommand.c.

PciOperateRegister()

EFI_STATUS PciOperateRegister	(	IN PCI_IO_DEVICE *	PciIoDevice,
		IN UINT16	Command,
		IN UINT8	Offset,
		IN UINT8	Operation,
		OUT UINT16 *	PtrCommand
	)

Operate the PCI register via PciIo function interface.

Parameters

PciIoDevice	Pointer to instance of PCI_IO_DEVICE.
Command	Operator command.
Offset	The address within the PCI configuration space for the PCI controller.
Operation	Type of Operation.
PtrCommand	Return buffer holding old PCI command, if operation is not EFI_SET_REGISTER.

Returns

Status of PciIo operation.

Definition at line 24 of file PciCommand.c.