UhciReg.c File Reference

#include "Uhci.h"

Go to the source code of this file.

Functions
UINT16	UhciReadReg (IN EFI_PCI_IO_PROTOCOL *PciIo, IN UINT32 Offset)
VOID	UhciWriteReg (IN EFI_PCI_IO_PROTOCOL *PciIo, IN UINT32 Offset, IN UINT16 Data)
VOID	UhciSetRegBit (IN EFI_PCI_IO_PROTOCOL *PciIo, IN UINT32 Offset, IN UINT16 Bit)
VOID	UhciClearRegBit (IN EFI_PCI_IO_PROTOCOL *PciIo, IN UINT32 Offset, IN UINT16 Bit)
VOID	UhciAckAllInterrupt (IN USB_HC_DEV *Uhc)
EFI_STATUS	UhciStopHc (IN USB_HC_DEV *Uhc, IN UINTN Timeout)
BOOLEAN	UhciIsHcWorking (IN EFI_PCI_IO_PROTOCOL *PciIo)
VOID	UhciSetFrameListBaseAddr (IN EFI_PCI_IO_PROTOCOL *PciIo, IN VOID *Addr)
VOID	UhciTurnOffUsbEmulation (IN EFI_PCI_IO_PROTOCOL *PciIo)

Detailed Description

The UHCI register operation routines.

Copyright (c) 2007, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file UhciReg.c.

Function Documentation

UhciAckAllInterrupt()

VOID UhciAckAllInterrupt

(

IN USB_HC_DEV *

Uhc

)

Clear all the interrutp status bits, these bits are Write-Clean.

Parameters

Uhc	The UHCI device.

Definition at line 131 of file UhciReg.c.

UhciClearRegBit()

VOID UhciClearRegBit	(	IN EFI_PCI_IO_PROTOCOL *	PciIo,
		IN UINT32	Offset,
		IN UINT16	Bit
	)

Clear a bit of the UHCI Register.

Parameters

PciIo	The PCI_IO protocol to access the PCI.
Offset	Register offset to USB_BAR_INDEX.
Bit	The bit to clear.

Definition at line 110 of file UhciReg.c.

UhciIsHcWorking()

BOOLEAN UhciIsHcWorking

(

IN EFI_PCI_IO_PROTOCOL *

PciIo

)

Check whether the host controller operates well.

Parameters

PciIo

The PCI_IO protocol to use.

Return values

TRUE	Host controller is working.
FALSE	Host controller is halted or system error.

Definition at line 195 of file UhciReg.c.

UhciReadReg()

UINT16 UhciReadReg	(	IN EFI_PCI_IO_PROTOCOL *	PciIo,
		IN UINT32	Offset
	)

Read a UHCI register.

Parameters

PciIo	The EFI_PCI_IO_PROTOCOL to use.
Offset	Register offset to USB_BAR_INDEX.

Returns

Content of register.

Definition at line 22 of file UhciReg.c.

UhciSetFrameListBaseAddr()

VOID UhciSetFrameListBaseAddr	(	IN EFI_PCI_IO_PROTOCOL *	PciIo,
		IN VOID *	Addr
	)

Set the UHCI frame list base address. It can't use UhciWriteReg which access memory in UINT16.

Parameters

PciIo	The EFI_PCI_IO_PROTOCOL to use.
Addr	Address to set.

Definition at line 220 of file UhciReg.c.

UhciSetRegBit()

VOID UhciSetRegBit	(	IN EFI_PCI_IO_PROTOCOL *	PciIo,
		IN UINT32	Offset,
		IN UINT16	Bit
	)

Set a bit of the UHCI Register.

Parameters

PciIo	The EFI_PCI_IO_PROTOCOL to use.
Offset	Register offset to USB_BAR_INDEX.
Bit	The bit to set.

Definition at line 88 of file UhciReg.c.

UhciStopHc()

EFI_STATUS UhciStopHc	(	IN USB_HC_DEV *	Uhc,
		IN UINTN	Timeout
	)

Stop the host controller.

Parameters

Uhc	The UHCI device.
Timeout	Max time allowed.

Return values

EFI_SUCCESS	The host controller is stopped.
EFI_TIMEOUT	Failed to stop the host controller.

Definition at line 158 of file UhciReg.c.

UhciTurnOffUsbEmulation()

VOID UhciTurnOffUsbEmulation

(

IN EFI_PCI_IO_PROTOCOL *

PciIo

)

Disable USB Emulation.

Parameters

PciIo

The EFI_PCI_IO_PROTOCOL protocol to use.

Definition at line 251 of file UhciReg.c.

UhciWriteReg()

VOID UhciWriteReg	(	IN EFI_PCI_IO_PROTOCOL *	PciIo,
		IN UINT32	Offset,
		IN UINT16	Data
	)

Write data to UHCI register.

Parameters

PciIo	The EFI_PCI_IO_PROTOCOL to use.
Offset	Register offset to USB_BAR_INDEX.
Data	Data to write.

Definition at line 57 of file UhciReg.c.