tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
audk/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c

1769 lines
51 KiB
C
Raw Blame History

/** @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:
Ehci.c
Abstract:
Revision History
**/
#include "Ehci.h"
//
// Two arrays used to translate the EHCI port state (change)
// to the UEFI protocol's port state (change).
//
USB_PORT_STATE_MAP mUsbPortStateMap[] = {
{PORTSC_CONN, USB_PORT_STAT_CONNECTION},
{PORTSC_ENABLED, USB_PORT_STAT_ENABLE},
{PORTSC_SUSPEND, USB_PORT_STAT_SUSPEND},
{PORTSC_OVERCUR, USB_PORT_STAT_OVERCURRENT},
{PORTSC_RESET, USB_PORT_STAT_RESET},
{PORTSC_POWER, USB_PORT_STAT_POWER},
{PORTSC_OWNER, USB_PORT_STAT_OWNER}
};
USB_PORT_STATE_MAP mUsbPortChangeMap[] = {
{PORTSC_CONN_CHANGE, USB_PORT_STAT_C_CONNECTION},
{PORTSC_ENABLE_CHANGE, USB_PORT_STAT_C_ENABLE},
{PORTSC_OVERCUR_CHANGE, USB_PORT_STAT_C_OVERCURRENT}
};
/**
Retrieves the capablility of root hub ports.
@param This This EFI_USB_HC_PROTOCOL instance.
@param MaxSpeed Max speed supported by the controller
@param PortNumber Number of the root hub ports.
@param Is64BitCapable Whether the controller supports 64-bit memory
addressing.
@return EFI_SUCCESS : host controller capability were retrieved successfully.
@return EFI_INVALID_PARAMETER : Either of the three capability pointer is NULL
**/
STATIC
EFI_STATUS
EFIAPI
EhcGetCapability (
IN EFI_USB2_HC_PROTOCOL *This,
OUT UINT8 *MaxSpeed,
OUT UINT8 *PortNumber,
OUT UINT8 *Is64BitCapable
)
{
USB2_HC_DEV *Ehc;
EFI_TPL OldTpl;
if ((MaxSpeed == NULL) || (PortNumber == NULL) || (Is64BitCapable == NULL)) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (EHC_TPL);
Ehc = EHC_FROM_THIS (This);
*MaxSpeed = EFI_USB_SPEED_HIGH;
*PortNumber = (UINT8) (Ehc->HcStructParams & HCSP_NPORTS);
*Is64BitCapable = (UINT8) (Ehc->HcCapParams & HCCP_64BIT);
EHC_DEBUG (("EhcGetCapability: %d ports, 64 bit %d\n", *PortNumber, *Is64BitCapable));
gBS->RestoreTPL (OldTpl);
return EFI_SUCCESS;
}
/**
Provides software reset for the USB host controller.
@param This This EFI_USB2_HC_PROTOCOL instance.
@param Attributes A bit mask of the reset operation to perform.
@return EFI_SUCCESS : The reset operation succeeded.
@return EFI_INVALID_PARAMETER : Attributes is not valid.
@return EFI_UNSUPPOURTED : The type of reset specified by Attributes is
@return not currently supported by the host controller.
@return EFI_DEVICE_ERROR : Host controller isn't halted to reset.
**/
STATIC
EFI_STATUS
EFIAPI
EhcReset (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT16 Attributes
)
{
USB2_HC_DEV *Ehc;
EFI_TPL OldTpl;
EFI_STATUS Status;
OldTpl = gBS->RaiseTPL (EHC_TPL);
Ehc = EHC_FROM_THIS (This);
switch (Attributes) {
case EFI_USB_HC_RESET_GLOBAL:
//
// Flow through, same behavior as Host Controller Reset
//
case EFI_USB_HC_RESET_HOST_CONTROLLER:
//
// Host Controller must be Halt when Reset it
//
if (!EhcIsHalt (Ehc)) {
Status = EhcHaltHC (Ehc, EHC_GENERIC_TIMEOUT);
if (EFI_ERROR (Status)) {
Status = EFI_DEVICE_ERROR;
goto ON_EXIT;
}
}
//
// Clean up the asynchronous transfers, currently only
// interrupt supports asynchronous operation.
//
EhciDelAllAsyncIntTransfers (Ehc);
EhcAckAllInterrupt (Ehc);
EhcFreeSched (Ehc);
Status = EhcResetHC (Ehc, EHC_RESET_TIMEOUT);
if (EFI_ERROR (Status)) {
goto ON_EXIT;
}
Status = EhcInitHC (Ehc);
break;
case EFI_USB_HC_RESET_GLOBAL_WITH_DEBUG:
case EFI_USB_HC_RESET_HOST_WITH_DEBUG:
Status = EFI_UNSUPPORTED;
break;
default:
Status = EFI_INVALID_PARAMETER;
}
ON_EXIT:
EHC_DEBUG (("EhcReset: exit status %r\n", Status));
gBS->RestoreTPL (OldTpl);
return Status;
}
/**
Retrieve the current state of the USB host controller.
@param This This EFI_USB2_HC_PROTOCOL instance.
@param State Variable to return the current host controller
state.
@return EFI_SUCCESS : Host controller state was returned in State.
@return EFI_INVALID_PARAMETER : State is NULL.
@return EFI_DEVICE_ERROR : An error was encountered while attempting to
@return retrieve the host controller's current state.
**/
STATIC
EFI_STATUS
EFIAPI
EhcGetState (
IN CONST EFI_USB2_HC_PROTOCOL *This,
OUT EFI_USB_HC_STATE *State
)
{
EFI_TPL OldTpl;
USB2_HC_DEV *Ehc;
if (State == NULL) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (EHC_TPL);
Ehc = EHC_FROM_THIS (This);
if (EHC_REG_BIT_IS_SET (Ehc, EHC_USBSTS_OFFSET, USBSTS_HALT)) {
*State = EfiUsbHcStateHalt;
} else {
*State = EfiUsbHcStateOperational;
}
gBS->RestoreTPL (OldTpl);
EHC_DEBUG (("EhcGetState: current state %d\n", *State));
return EFI_SUCCESS;
}
/**
Sets the USB host controller to a specific state.
@param This This EFI_USB2_HC_PROTOCOL instance.
@param State The state of the host controller that will be set.
@return EFI_SUCCESS : The USB host controller was successfully placed
@return in the state specified by State.
@return EFI_INVALID_PARAMETER : State is invalid.
@return EFI_DEVICE_ERROR : Failed to set the state due to device error.
**/
STATIC
EFI_STATUS
EFIAPI
EhcSetState (
IN EFI_USB2_HC_PROTOCOL *This,
IN EFI_USB_HC_STATE State
)
{
USB2_HC_DEV *Ehc;
EFI_TPL OldTpl;
EFI_STATUS Status;
EFI_USB_HC_STATE CurState;
Status = EhcGetState (This, &CurState);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
if (CurState == State) {
return EFI_SUCCESS;
}
OldTpl = gBS->RaiseTPL (EHC_TPL);
Ehc = EHC_FROM_THIS (This);
switch (State) {
case EfiUsbHcStateHalt:
Status = EhcHaltHC (Ehc, EHC_GENERIC_TIMEOUT);
break;
case EfiUsbHcStateOperational:
if (EHC_REG_BIT_IS_SET (Ehc, EHC_USBSTS_OFFSET, USBSTS_SYS_ERROR)) {
Status = EFI_DEVICE_ERROR;
break;
}
//
// Software must not write a one to this field unless the host controller
// is in the Halted state. Doing so will yield undefined results.
// refers to Spec[EHCI1.0-2.3.1]
//
if (!EHC_REG_BIT_IS_SET (Ehc, EHC_USBSTS_OFFSET, USBSTS_HALT)) {
Status = EFI_DEVICE_ERROR;
break;
}
Status = EhcRunHC (Ehc, EHC_GENERIC_TIMEOUT);
break;
case EfiUsbHcStateSuspend:
Status = EFI_UNSUPPORTED;
break;
default:
Status = EFI_INVALID_PARAMETER;
}
EHC_DEBUG (("EhcSetState: exit status %r\n", Status));
gBS->RestoreTPL (OldTpl);
return Status;
}
/**
Retrieves the current status of a USB root hub port.
@param This This EFI_USB2_HC_PROTOCOL instance.
@param PortNumber The root hub port to retrieve the state from. This
value is zero-based.
@param PortStatus Variable to receive the port state
@return EFI_SUCCESS : The status of the USB root hub port specified
@return by PortNumber was returned in PortStatus.
@return EFI_INVALID_PARAMETER : PortNumber is invalid.
@return EFI_DEVICE_ERROR : Can't read register
**/
STATIC
EFI_STATUS
EFIAPI
EhcGetRootHubPortStatus (
IN CONST EFI_USB2_HC_PROTOCOL *This,
IN CONST UINT8 PortNumber,
OUT EFI_USB_PORT_STATUS *PortStatus
)
{
USB2_HC_DEV *Ehc;
EFI_TPL OldTpl;
UINT32 Offset;
UINT32 State;
UINT32 TotalPort;
UINTN Index;
UINTN MapSize;
EFI_STATUS Status;
if (PortStatus == NULL) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (EHC_TPL);
Ehc = EHC_FROM_THIS (This);
Status = EFI_SUCCESS;
TotalPort = (Ehc->HcStructParams & HCSP_NPORTS);
if (PortNumber >= TotalPort) {
Status = EFI_INVALID_PARAMETER;
goto ON_EXIT;
}
Offset = (UINT32) (EHC_PORT_STAT_OFFSET + (4 * PortNumber));
PortStatus->PortStatus = 0;
PortStatus->PortChangeStatus = 0;
State = EhcReadOpReg (Ehc, Offset);
//
// Identify device speed. If in K state, it is low speed.
// If the port is enabled after reset, the device is of
// high speed. The USB bus driver should retrieve the actual
// port speed after reset.
//
if (EHC_BIT_IS_SET (State, PORTSC_LINESTATE_K)) {
PortStatus->PortStatus |= USB_PORT_STAT_LOW_SPEED;
} else if (EHC_BIT_IS_SET (State, PORTSC_ENABLED)) {
PortStatus->PortStatus |= USB_PORT_STAT_HIGH_SPEED;
}
//
// Convert the EHCI port/port change state to UEFI status
//
MapSize = sizeof (mUsbPortStateMap) / sizeof (USB_PORT_STATE_MAP);
for (Index = 0; Index < MapSize; Index++) {
if (EHC_BIT_IS_SET (State, mUsbPortStateMap[Index].HwState)) {
PortStatus->PortStatus = (UINT16) (PortStatus->PortStatus | mUsbPortStateMap[Index].UefiState);
}
}
MapSize = sizeof (mUsbPortChangeMap) / sizeof (USB_PORT_STATE_MAP);
for (Index = 0; Index < MapSize; Index++) {
if (EHC_BIT_IS_SET (State, mUsbPortChangeMap[Index].HwState)) {
PortStatus->PortChangeStatus = (UINT16) (PortStatus->PortChangeStatus | mUsbPortChangeMap[Index].UefiState);
}
}
ON_EXIT:
gBS->RestoreTPL (OldTpl);
return Status;
}
/**
Sets a feature for the specified root hub port.
@param This This EFI_USB2_HC_PROTOCOL instance.
@param PortNumber Root hub port to set.
@param PortFeature Feature to set
@return EFI_SUCCESS : The feature specified by PortFeature was set
@return EFI_INVALID_PARAMETER : PortNumber is invalid or PortFeature is invalid.
@return EFI_DEVICE_ERROR : Can't read register
**/
STATIC
EFI_STATUS
EFIAPI
EhcSetRootHubPortFeature (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT8 PortNumber,
IN EFI_USB_PORT_FEATURE PortFeature
)
{
USB2_HC_DEV *Ehc;
EFI_TPL OldTpl;
UINT32 Offset;
UINT32 State;
UINT32 TotalPort;
EFI_STATUS Status;
OldTpl = gBS->RaiseTPL (EHC_TPL);
Ehc = EHC_FROM_THIS (This);
Status = EFI_SUCCESS;
TotalPort = (Ehc->HcStructParams & HCSP_NPORTS);
if (PortNumber >= TotalPort) {
Status = EFI_INVALID_PARAMETER;
goto ON_EXIT;
}
Offset = (UINT32) (EHC_PORT_STAT_OFFSET + (4 * PortNumber));
State = EhcReadOpReg (Ehc, Offset);
//
// Mask off the port status change bits, these bits are
// write clean bit
//
State &= ~PORTSC_CHANGE_MASK;
switch (PortFeature) {
case EfiUsbPortEnable:
//
// Sofeware can't set this bit, Port can only be enable by
// EHCI as a part of the reset and enable
//
State |= PORTSC_ENABLED;
EhcWriteOpReg (Ehc, Offset, State);
break;
case EfiUsbPortSuspend:
State |= PORTSC_SUSPEND;
EhcWriteOpReg (Ehc, Offset, State);
break;
case EfiUsbPortReset:
//
// Make sure Host Controller not halt before reset it
//
if (EhcIsHalt (Ehc)) {
Status = EhcRunHC (Ehc, EHC_GENERIC_TIMEOUT);
if (EFI_ERROR (Status)) {
EHC_DEBUG (("EhcSetRootHubPortFeature :failed to start HC - %r\n", Status));
break;
}
}
//
// Set one to PortReset bit must also set zero to PortEnable bit
//
State |= PORTSC_RESET;
State &= ~PORTSC_ENABLED;
EhcWriteOpReg (Ehc, Offset, State);
break;
case EfiUsbPortPower:
//
// Not supported, ignore the operation
//
Status = EFI_SUCCESS;
break;
case EfiUsbPortOwner:
State |= PORTSC_OWNER;
EhcWriteOpReg (Ehc, Offset, State);
break;
default:
Status = EFI_INVALID_PARAMETER;
}
ON_EXIT:
EHC_DEBUG (("EhcSetRootHubPortFeature: exit status %r\n", Status));
gBS->RestoreTPL (OldTpl);
return Status;
}
/**
Clears a feature for the specified root hub port.
@param This A pointer to the EFI_USB2_HC_PROTOCOL instance.
@param PortNumber Specifies the root hub port whose feature is
requested to be cleared.
@param PortFeature Indicates the feature selector associated with the
feature clear request.
@return EFI_SUCCESS : The feature specified by PortFeature was cleared
@return for the USB root hub port specified by PortNumber.
@return EFI_INVALID_PARAMETER : PortNumber is invalid or PortFeature is invalid.
@return EFI_DEVICE_ERROR : Can't read register
**/
STATIC
EFI_STATUS
EFIAPI
EhcClearRootHubPortFeature (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT8 PortNumber,
IN EFI_USB_PORT_FEATURE PortFeature
)
{
USB2_HC_DEV *Ehc;
EFI_TPL OldTpl;
UINT32 Offset;
UINT32 State;
UINT32 TotalPort;
EFI_STATUS Status;
OldTpl = gBS->RaiseTPL (EHC_TPL);
Ehc = EHC_FROM_THIS (This);
Status = EFI_SUCCESS;
TotalPort = (Ehc->HcStructParams & HCSP_NPORTS);
if (PortNumber >= TotalPort) {
Status = EFI_INVALID_PARAMETER;
goto ON_EXIT;
}
Offset = EHC_PORT_STAT_OFFSET + (4 * PortNumber);
State = EhcReadOpReg (Ehc, Offset);
State &= ~PORTSC_CHANGE_MASK;
switch (PortFeature) {
case EfiUsbPortEnable:
//
// Clear PORT_ENABLE feature means disable port.
//
State &= ~PORTSC_ENABLED;
EhcWriteOpReg (Ehc, Offset, State);
break;
case EfiUsbPortSuspend:
//
// A write of zero to this bit is ignored by the host
// controller. The host controller will unconditionally
// set this bit to a zero when:
// 1. software sets the Forct Port Resume bit to a zero from a one.
// 2. software sets the Port Reset bit to a one frome a zero.
//
State &= ~PORSTSC_RESUME;
EhcWriteOpReg (Ehc, Offset, State);
break;
case EfiUsbPortReset:
//
// Clear PORT_RESET means clear the reset signal.
//
State &= ~PORTSC_RESET;
EhcWriteOpReg (Ehc, Offset, State);
break;
case EfiUsbPortOwner:
//
// Clear port owner means this port owned by EHC
//
State &= ~PORTSC_OWNER;
EhcWriteOpReg (Ehc, Offset, State);
break;
case EfiUsbPortConnectChange:
//
// Clear connect status change
//
State |= PORTSC_CONN_CHANGE;
EhcWriteOpReg (Ehc, Offset, State);
break;
case EfiUsbPortEnableChange:
//
// Clear enable status change
//
State |= PORTSC_ENABLE_CHANGE;
EhcWriteOpReg (Ehc, Offset, State);
break;
case EfiUsbPortOverCurrentChange:
//
// Clear PortOverCurrent change
//
State |= PORTSC_OVERCUR_CHANGE;
EhcWriteOpReg (Ehc, Offset, State);
break;
case EfiUsbPortPower:
case EfiUsbPortSuspendChange:
case EfiUsbPortResetChange:
//
// Not supported or not related operation
//
break;
default:
Status = EFI_INVALID_PARAMETER;
break;
}
ON_EXIT:
EHC_DEBUG (("EhcClearRootHubPortFeature: exit status %r\n", Status));
gBS->RestoreTPL (OldTpl);
return Status;
}
/**
Submits control transfer to a target USB device.
@param This This EFI_USB2_HC_PROTOCOL instance.
@param DeviceAddress The target device address
@param DeviceSpeed Target device speed.
@param MaximumPacketLength Maximum packet size the default control transfer
endpoint is capable of sending or receiving.
@param Request USB device request to send
@param TransferDirection Specifies the data direction for the data stage
@param Data Data buffer to be transmitted or received from USB
device.
@param DataLength The size (in bytes) of the data buffer
@param TimeOut Indicates the maximum timeout, in millisecond,
@param Translator Transaction translator to be used by this device.
@param TransferResult Return the result of this control transfer.
@return EFI_SUCCESS : Transfer was completed successfully.
@return EFI_OUT_OF_RESOURCES : The transfer failed due to lack of resources.
@return EFI_INVALID_PARAMETER : Some parameters are invalid.
@return EFI_TIMEOUT : Transfer failed due to timeout.
@return EFI_DEVICE_ERROR : Transfer failed due to host controller or device error.
**/
STATIC
EFI_STATUS
EFIAPI
EhcControlTransfer (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT8 DeviceAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN EFI_USB_DEVICE_REQUEST *Request,
IN EFI_USB_DATA_DIRECTION TransferDirection,
IN OUT VOID *Data,
IN OUT UINTN *DataLength,
IN UINTN TimeOut,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
OUT UINT32 *TransferResult
)
{
USB2_HC_DEV *Ehc;
URB *Urb;
EFI_TPL OldTpl;
UINT8 Endpoint;
EFI_STATUS Status;
//
// Validate parameters
//
if ((Request == NULL) || (TransferResult == NULL)) {
return EFI_INVALID_PARAMETER;
}
if ((TransferDirection != EfiUsbDataIn) &&
(TransferDirection != EfiUsbDataOut) &&
(TransferDirection != EfiUsbNoData)) {
return EFI_INVALID_PARAMETER;
}
if ((TransferDirection == EfiUsbNoData) &&
((Data != NULL) || (*DataLength != 0))) {
return EFI_INVALID_PARAMETER;
}
if ((TransferDirection != EfiUsbNoData) &&
((Data == NULL) || (*DataLength == 0))) {
return EFI_INVALID_PARAMETER;
}
if ((MaximumPacketLength != 8) && (MaximumPacketLength != 16) &&
(MaximumPacketLength != 32) && (MaximumPacketLength != 64)) {
return EFI_INVALID_PARAMETER;
}
if ((DeviceSpeed == EFI_USB_SPEED_LOW) && (MaximumPacketLength != 8)) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (EHC_TPL);
Ehc = EHC_FROM_THIS (This);
Status = EFI_DEVICE_ERROR;
*TransferResult = EFI_USB_ERR_SYSTEM;
if (EhcIsHalt (Ehc) || EhcIsSysError (Ehc)) {
EHC_ERROR (("EhcControlTransfer: HC halted at entrance\n"));
EhcAckAllInterrupt (Ehc);
goto ON_EXIT;
}
EhcAckAllInterrupt (Ehc);
//
// Create a new URB, insert it into the asynchronous
// schedule list, then poll the execution status.
//
//
// Encode the direction in address, although default control
// endpoint is bidirectional. EhcCreateUrb expects this
// combination of Ep addr and its direction.
//
Endpoint = (UINT8) (0 | ((TransferDirection == EfiUsbDataIn) ? 0x80 : 0));
Urb = EhcCreateUrb (
Ehc,
DeviceAddress,
Endpoint,
DeviceSpeed,
0,
MaximumPacketLength,
Translator,
EHC_CTRL_TRANSFER,
Request,
Data,
*DataLength,
NULL,
NULL,
1
);
if (Urb == NULL) {
EHC_ERROR (("EhcControlTransfer: failed to create URB"));
Status = EFI_OUT_OF_RESOURCES;
goto ON_EXIT;
}
EhcLinkQhToAsync (Ehc, Urb->Qh);
Status = EhcExecTransfer (Ehc, Urb, TimeOut);
EhcUnlinkQhFromAsync (Ehc, Urb->Qh);
//
// Get the status from URB. The result is updated in EhcCheckUrbResult
// which is called by EhcExecTransfer
//
*TransferResult = Urb->Result;
*DataLength = Urb->Completed;
if (*TransferResult == EFI_USB_NOERROR) {
Status = EFI_SUCCESS;
}
EhcAckAllInterrupt (Ehc);
EhcFreeUrb (Ehc, Urb);
ON_EXIT:
Ehc->PciIo->Flush (Ehc->PciIo);
gBS->RestoreTPL (OldTpl);
if (EFI_ERROR (Status)) {
EHC_ERROR (("EhcControlTransfer: error - %r, transfer - %x\n", Status, *TransferResult));
}
return Status;
}
/**
Submits bulk transfer to a bulk endpoint of a USB device.
@param This This EFI_USB2_HC_PROTOCOL instance.
@param DeviceAddress Target device address
@param EndPointAddress Endpoint number and its direction in bit 7. .
@param DeviceSpeed Device speed, Low speed device doesn't support bulk
transfer.
@param MaximumPacketLength Maximum packet size the endpoint is capable of
sending or receiving.
@param DataBuffersNumber Number of data buffers prepared for the transfer.
@param Data Array of pointers to the buffers of data to transmit
from or receive into.
@param DataLength The lenght of the data buffer
@param DataToggle On input, the initial data toggle for the transfer;
On output, it is updated to to next data toggle to
use of the subsequent bulk
transfer.
@param Translator A pointr to the transaction translator data.
@param TimeOut Indicates the maximum time, in millisecond, which
the transfer is allowed to complete.
@param TransferResult A pointer to the detailed result information of the
bulk transfer.
@return EFI_SUCCESS : The transfer was completed successfully.
@return EFI_OUT_OF_RESOURCES : The transfer failed due to lack of resource.
@return EFI_INVALID_PARAMETER : Some parameters are invalid.
@return EFI_TIMEOUT : The transfer failed due to timeout.
@return EFI_DEVICE_ERROR : The transfer failed due to host controller error.
**/
STATIC
EFI_STATUS
EFIAPI
EhcBulkTransfer (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN UINT8 DataBuffersNumber,
IN OUT VOID *Data[EFI_USB_MAX_BULK_BUFFER_NUM],
IN OUT UINTN *DataLength,
IN OUT UINT8 *DataToggle,
IN UINTN TimeOut,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
OUT UINT32 *TransferResult
)
{
USB2_HC_DEV *Ehc;
URB *Urb;
EFI_TPL OldTpl;
EFI_STATUS Status;
//
// Validate the parameters
//
if ((DataLength == NULL) || (*DataLength == 0) ||
(Data == NULL) || (Data[0] == NULL) || (TransferResult == NULL)) {
return EFI_INVALID_PARAMETER;
}
if ((*DataToggle != 0) && (*DataToggle != 1)) {
return EFI_INVALID_PARAMETER;
}
if ((DeviceSpeed == EFI_USB_SPEED_LOW) ||
((DeviceSpeed == EFI_USB_SPEED_FULL) && (MaximumPacketLength > 64)) ||
((EFI_USB_SPEED_HIGH == DeviceSpeed) && (MaximumPacketLength > 512))) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (EHC_TPL);
Ehc = EHC_FROM_THIS (This);
*TransferResult = EFI_USB_ERR_SYSTEM;
Status = EFI_DEVICE_ERROR;
if (EhcIsHalt (Ehc) || EhcIsSysError (Ehc)) {
EHC_ERROR (("EhcBulkTransfer: HC is halted\n"));
EhcAckAllInterrupt (Ehc);
goto ON_EXIT;
}
EhcAckAllInterrupt (Ehc);
//
// Create a new URB, insert it into the asynchronous
// schedule list, then poll the execution status.
//
Urb = EhcCreateUrb (
Ehc,
DeviceAddress,
EndPointAddress,
DeviceSpeed,
*DataToggle,
MaximumPacketLength,
Translator,
EHC_BULK_TRANSFER,
NULL,
Data[0],
*DataLength,
NULL,
NULL,
1
);
if (Urb == NULL) {
EHC_ERROR (("EhcBulkTransfer: failed to create URB\n"));
Status = EFI_OUT_OF_RESOURCES;
goto ON_EXIT;
}
EhcLinkQhToAsync (Ehc, Urb->Qh);
Status = EhcExecTransfer (Ehc, Urb, TimeOut);
EhcUnlinkQhFromAsync (Ehc, Urb->Qh);
*TransferResult = Urb->Result;
*DataLength = Urb->Completed;
*DataToggle = Urb->DataToggle;
if (*TransferResult == EFI_USB_NOERROR) {
Status = EFI_SUCCESS;
}
EhcAckAllInterrupt (Ehc);
EhcFreeUrb (Ehc, Urb);
ON_EXIT:
Ehc->PciIo->Flush (Ehc->PciIo);
gBS->RestoreTPL (OldTpl);
if (EFI_ERROR (Status)) {
EHC_ERROR (("EhcBulkTransfer: error - %r, transfer - %x\n", Status, *TransferResult));
}
return Status;
}
/**
Submits an asynchronous interrupt transfer to an
interrupt endpoint of a USB device.
@param This This EFI_USB2_HC_PROTOCOL instance.
@param DeviceAddress Target device address
@param EndPointAddress Endpoint number and its direction encoded in bit 7
@param DeviceSpeed Indicates device speed.
@param MaximumPacketLength Maximum packet size the target endpoint is capable
@param IsNewTransfer If TRUE, to submit an new asynchronous interrupt
transfer If FALSE, to remove the specified
asynchronous interrupt
@param DataToggle On input, the initial data toggle to use; on output,
it is updated to indicate the next data toggle
@param PollingInterval The he interval, in milliseconds, that the transfer
is polled.
@param DataLength The length of data to receive at the rate specified
by PollingInterval.
@param Translator Transaction translator to use.
@param CallBackFunction Function to call at the rate specified by
PollingInterval
@param Context Context to CallBackFunction.
@return EFI_SUCCESS : The request has been successfully submitted or canceled.
@return EFI_INVALID_PARAMETER : Some parameters are invalid.
@return EFI_OUT_OF_RESOURCES : The request failed due to a lack of resources.
@return EFI_DEVICE_ERROR : The transfer failed due to host controller error.
**/
STATIC
EFI_STATUS
EFIAPI
EhcAsyncInterruptTransfer (
IN EFI_USB2_HC_PROTOCOL * This,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN BOOLEAN IsNewTransfer,
IN OUT UINT8 *DataToggle,
IN UINTN PollingInterval,
IN UINTN DataLength,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR * Translator,
IN EFI_ASYNC_USB_TRANSFER_CALLBACK CallBackFunction,
IN VOID *Context OPTIONAL
)
{
USB2_HC_DEV *Ehc;
URB *Urb;
EFI_TPL OldTpl;
EFI_STATUS Status;
UINT8 *Data;
//
// Validate parameters
//
if (!EHCI_IS_DATAIN (EndPointAddress)) {
return EFI_INVALID_PARAMETER;
}
if (IsNewTransfer) {
if (DataLength == 0) {
return EFI_INVALID_PARAMETER;
}
if ((*DataToggle != 1) && (*DataToggle != 0)) {
return EFI_INVALID_PARAMETER;
}
if ((PollingInterval > 255) || (PollingInterval < 1)) {
return EFI_INVALID_PARAMETER;
}
}
OldTpl = gBS->RaiseTPL (EHC_TPL);
Ehc = EHC_FROM_THIS (This);
//
// Delete Async interrupt transfer request. DataToggle will return
// the next data toggle to use.
//
if (!IsNewTransfer) {
Status = EhciDelAsyncIntTransfer (Ehc, DeviceAddress, EndPointAddress, DataToggle);
EHC_DEBUG (("EhcAsyncInterruptTransfer: remove old transfer - %r\n", Status));
goto ON_EXIT;
}
Status = EFI_SUCCESS;
if (EhcIsHalt (Ehc) || EhcIsSysError (Ehc)) {
EHC_ERROR (("EhcAsyncInterruptTransfer: HC is halt\n"));
EhcAckAllInterrupt (Ehc);
Status = EFI_DEVICE_ERROR;
goto ON_EXIT;
}
EhcAckAllInterrupt (Ehc);
Data = AllocatePool (DataLength);
if (Data == NULL) {
EHC_ERROR (("EhcAsyncInterruptTransfer: failed to allocate buffer\n"));
Status = EFI_OUT_OF_RESOURCES;
goto ON_EXIT;
}
Urb = EhcCreateUrb (
Ehc,
DeviceAddress,
EndPointAddress,
DeviceSpeed,
*DataToggle,
MaximumPacketLength,
Translator,
EHC_INT_TRANSFER_ASYNC,
NULL,
Data,
DataLength,
CallBackFunction,
Context,
PollingInterval
);
if (Urb == NULL) {
EHC_ERROR (("EhcAsyncInterruptTransfer: failed to create URB\n"));
gBS->FreePool (Data);
Status = EFI_OUT_OF_RESOURCES;
goto ON_EXIT;
}
//
// New asynchronous transfer must inserted to the head.
// Check the comments in EhcMoniteAsyncRequests
//
EhcLinkQhToPeriod (Ehc, Urb->Qh);
InsertHeadList (&Ehc->AsyncIntTransfers, &Urb->UrbList);
ON_EXIT:
Ehc->PciIo->Flush (Ehc->PciIo);
gBS->RestoreTPL (OldTpl);
return Status;
}
/**
Submits synchronous interrupt transfer to an interrupt endpoint
of a USB device.
@param This This EFI_USB2_HC_PROTOCOL instance.
@param DeviceAddress Target device address
@param EndPointAddress Endpoint number and its direction encoded in bit 7
@param DeviceSpeed Indicates device speed.
@param MaximumPacketLength Maximum packet size the target endpoint is capable
of sending or receiving.
@param Data Buffer of data that will be transmitted to USB
device or received from USB device.
@param DataLength On input, the size, in bytes, of the data buffer; On
output, the number of bytes transferred.
@param DataToggle On input, the initial data toggle to use; on output,
it is updated to indicate the next data toggle
@param TimeOut Maximum time, in second, to complete
@param Translator Transaction translator to use.
@param TransferResult Variable to receive the transfer result
@return EFI_SUCCESS : The transfer was completed successfully.
@return EFI_OUT_OF_RESOURCES : The transfer failed due to lack of resource.
@return EFI_INVALID_PARAMETER : Some parameters are invalid.
@return EFI_TIMEOUT : The transfer failed due to timeout.
@return EFI_DEVICE_ERROR : The failed due to host controller or device error
**/
STATIC
EFI_STATUS
EFIAPI
EhcSyncInterruptTransfer (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN OUT VOID *Data,
IN OUT UINTN *DataLength,
IN OUT UINT8 *DataToggle,
IN UINTN TimeOut,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
OUT UINT32 *TransferResult
)
{
USB2_HC_DEV *Ehc;
EFI_TPL OldTpl;
URB *Urb;
EFI_STATUS Status;
//
// Validates parameters
//
if ((DataLength == NULL) || (*DataLength == 0) ||
(Data == NULL) || (TransferResult == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (!EHCI_IS_DATAIN (EndPointAddress)) {
return EFI_INVALID_PARAMETER;
}
if ((*DataToggle != 1) && (*DataToggle != 0)) {
return EFI_INVALID_PARAMETER;
}
if (((DeviceSpeed == EFI_USB_SPEED_LOW) && (MaximumPacketLength != 8)) ||
((DeviceSpeed == EFI_USB_SPEED_FULL) && (MaximumPacketLength > 64)) ||
((DeviceSpeed == EFI_USB_SPEED_HIGH) && (MaximumPacketLength > 3072))) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (EHC_TPL);
Ehc = EHC_FROM_THIS (This);
*TransferResult = EFI_USB_ERR_SYSTEM;
Status = EFI_DEVICE_ERROR;
if (EhcIsHalt (Ehc) || EhcIsSysError (Ehc)) {
EHC_ERROR (("EhcSyncInterruptTransfer: HC is halt\n"));
EhcAckAllInterrupt (Ehc);
goto ON_EXIT;
}
EhcAckAllInterrupt (Ehc);
Urb = EhcCreateUrb (
Ehc,
DeviceAddress,
EndPointAddress,
DeviceSpeed,
*DataToggle,
MaximumPacketLength,
Translator,
EHC_INT_TRANSFER_SYNC,
NULL,
Data,
*DataLength,
NULL,
NULL,
1
);
if (Urb == NULL) {
EHC_ERROR (("EhcSyncInterruptTransfer: failed to create URB\n"));
Status = EFI_OUT_OF_RESOURCES;
goto ON_EXIT;
}
EhcLinkQhToPeriod (Ehc, Urb->Qh);
Status = EhcExecTransfer (Ehc, Urb, TimeOut);
EhcUnlinkQhFromPeriod (Ehc, Urb->Qh);
*TransferResult = Urb->Result;
*DataLength = Urb->Completed;
*DataToggle = Urb->DataToggle;
if (*TransferResult == EFI_USB_NOERROR) {
Status = EFI_SUCCESS;
}
ON_EXIT:
Ehc->PciIo->Flush (Ehc->PciIo);
gBS->RestoreTPL (OldTpl);
if (EFI_ERROR (Status)) {
EHC_ERROR (("EhcSyncInterruptTransfer: error - %r, transfer - %x\n", Status, *TransferResult));
}
return Status;
}
/**
Submits isochronous transfer to a target USB device.
@param This This EFI_USB2_HC_PROTOCOL instance.
@param DeviceAddress Target device address
@param EndPointAddress End point address with its direction
@param DeviceSpeed Device speed, Low speed device doesn't support this
type.
@param MaximumPacketLength Maximum packet size that the endpoint is capable of
sending or receiving.
@param DataBuffersNumber Number of data buffers prepared for the transfer.
@param Data Array of pointers to the buffers of data that will
be transmitted to USB device or received from USB
device.
@param DataLength The size, in bytes, of the data buffer
@param Translator Transaction translator to use.
@param TransferResult Variable to receive the transfer result
@return EFI_UNSUPPORTED : Isochronous transfer is unsupported.
**/
STATIC
EFI_STATUS
EFIAPI
EhcIsochronousTransfer (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN UINT8 DataBuffersNumber,
IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM],
IN UINTN DataLength,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
OUT UINT32 *TransferResult
)
{
return EFI_UNSUPPORTED;
}
/**
Submits Async isochronous transfer to a target USB device.
@param This This EFI_USB2_HC_PROTOCOL instance.
@param DeviceAddress Target device address
@param EndPointAddress End point address with its direction
@param DeviceSpeed Device speed, Low speed device doesn't support this
type.
@param MaximumPacketLength Maximum packet size that the endpoint is capable of
sending or receiving.
@param DataBuffersNumber Number of data buffers prepared for the transfer.
@param Data Array of pointers to the buffers of data that will
be transmitted to USB device or received from USB
device.
@param DataLength The size, in bytes, of the data buffer
@param Translator Transaction translator to use.
@param IsochronousCallBack Function to be called when the transfer complete
@param Context Context passed to the call back function as
parameter
@return EFI_UNSUPPORTED : Isochronous transfer isn't supported
**/
STATIC
EFI_STATUS
EFIAPI
EhcAsyncIsochronousTransfer (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN UINT8 DataBuffersNumber,
IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM],
IN UINTN DataLength,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
IN EFI_ASYNC_USB_TRANSFER_CALLBACK IsochronousCallBack,
IN VOID *Context
)
{
return EFI_UNSUPPORTED;
}
EFI_STATUS
EFIAPI
EhcDriverEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Entry point for EFI drivers.
Arguments:
ImageHandle - EFI_HANDLE
SystemTable - EFI_SYSTEM_TABLE
Returns:
EFI_SUCCESS Success
EFI_DEVICE_ERROR Fail
--*/
{
return EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&gEhciDriverBinding,
ImageHandle,
&gEhciComponentName,
&gEhciComponentName2
);
}
/**
Test to see if this driver supports ControllerHandle. Any
ControllerHandle that has Usb2HcProtocol installed will
be supported.
@param This Protocol instance pointer.
@param Controlle Handle of device to test
@param RemainingDevicePath Not used
@return EFI_SUCCESS : This driver supports this device.
@return EFI_UNSUPPORTED : This driver does not support this device.
**/
EFI_STATUS
EFIAPI
EhcDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
USB_CLASSC UsbClassCReg;
//
// Test whether there is PCI IO Protocol attached on the controller handle.
//
Status = gBS->OpenProtocol (
Controller,
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
Status = PciIo->Pci.Read (
PciIo,
EfiPciIoWidthUint8,
EHC_PCI_CLASSC,
sizeof (USB_CLASSC) / sizeof (UINT8),
&UsbClassCReg
);
if (EFI_ERROR (Status)) {
Status = EFI_UNSUPPORTED;
goto ON_EXIT;
}
//
// Test whether the controller belongs to Ehci type
//
if ((UsbClassCReg.BaseCode != PCI_CLASS_SERIAL) ||
(UsbClassCReg.SubClassCode != PCI_CLASS_SERIAL_USB) ||
(UsbClassCReg.PI != EHC_PCI_CLASSC_PI)) {
Status = EFI_UNSUPPORTED;
}
ON_EXIT:
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
/**
Create and initialize a USB2_HC_DEV
@param PciIo The PciIo on this device
@param OriginalPciAttributes Original PCI attributes
@return The allocated and initialized USB2_HC_DEV structure
@return if created, otherwise NULL.
**/
STATIC
USB2_HC_DEV *
EhcCreateUsb2Hc (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT64 OriginalPciAttributes
)
{
USB2_HC_DEV *Ehc;
EFI_STATUS Status;
Ehc = AllocateZeroPool (sizeof (USB2_HC_DEV));
if (Ehc == NULL) {
return NULL;
}
//
// Init EFI_USB2_HC_PROTOCOL interface and private data structure
//
Ehc->Signature = USB2_HC_DEV_SIGNATURE;
Ehc->Usb2Hc.GetCapability = EhcGetCapability;
Ehc->Usb2Hc.Reset = EhcReset;
Ehc->Usb2Hc.GetState = EhcGetState;
Ehc->Usb2Hc.SetState = EhcSetState;
Ehc->Usb2Hc.ControlTransfer = EhcControlTransfer;
Ehc->Usb2Hc.BulkTransfer = EhcBulkTransfer;
Ehc->Usb2Hc.AsyncInterruptTransfer = EhcAsyncInterruptTransfer;
Ehc->Usb2Hc.SyncInterruptTransfer = EhcSyncInterruptTransfer;
Ehc->Usb2Hc.IsochronousTransfer = EhcIsochronousTransfer;
Ehc->Usb2Hc.AsyncIsochronousTransfer = EhcAsyncIsochronousTransfer;
Ehc->Usb2Hc.GetRootHubPortStatus = EhcGetRootHubPortStatus;
Ehc->Usb2Hc.SetRootHubPortFeature = EhcSetRootHubPortFeature;
Ehc->Usb2Hc.ClearRootHubPortFeature = EhcClearRootHubPortFeature;
Ehc->Usb2Hc.MajorRevision = 0x1;
Ehc->Usb2Hc.MinorRevision = 0x1;
Ehc->PciIo = PciIo;
Ehc->OriginalPciAttributes = OriginalPciAttributes;
InitializeListHead (&Ehc->AsyncIntTransfers);
Ehc->HcStructParams = EhcReadCapRegister (Ehc, EHC_HCSPARAMS_OFFSET);
Ehc->HcCapParams = EhcReadCapRegister (Ehc, EHC_HCCPARAMS_OFFSET);
Ehc->CapLen = EhcReadCapRegister (Ehc, EHC_CAPLENGTH_OFFSET) & 0x0FF;
EHC_DEBUG (("EhcCreateUsb2Hc: capability length %d\n", Ehc->CapLen));
//
// Create AsyncRequest Polling Timer
//
Status = gBS->CreateEvent (
EVT_TIMER | EVT_NOTIFY_SIGNAL,
TPL_CALLBACK,
EhcMoniteAsyncRequests,
Ehc,
&Ehc->PollTimer
);
if (EFI_ERROR (Status)) {
gBS->FreePool (Ehc);
return NULL;
}
return Ehc;
}
/**
Starting the Usb EHCI Driver
@param This Protocol instance pointer.
@param Controller Handle of device to test
@param RemainingDevicePath Not used
@return EFI_SUCCESS : supports this device.
@return EFI_UNSUPPORTED : do not support this device.
@return EFI_DEVICE_ERROR : cannot be started due to device Error
@return EFI_OUT_OF_RESOURCES : cannot allocate resources
**/
EFI_STATUS
EFIAPI
EhcDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
USB2_HC_DEV *Ehc;
EFI_PCI_IO_PROTOCOL *PciIo;
UINT64 Supports;
UINT64 OriginalPciAttributes;
BOOLEAN PciAttributesSaved;
//
// Open the PciIo Protocol, then enable the USB host controller
//
Status = gBS->OpenProtocol (
Controller,
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
EHC_ERROR (("EhcDriverBindingStart: failed to open PCI_IO\n"));
return EFI_DEVICE_ERROR;
}
PciAttributesSaved = FALSE;
//
// Save original PCI attributes
//
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationGet,
0,
&OriginalPciAttributes
);
if (EFI_ERROR (Status)) {
goto CLOSE_PCIIO;
}
PciAttributesSaved = TRUE;
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationSupported,
0,
&Supports
);
if (!EFI_ERROR (Status)) {
Supports &= EFI_PCI_DEVICE_ENABLE;
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationEnable,
Supports,
NULL
);
}
if (EFI_ERROR (Status)) {
EHC_ERROR (("EhcDriverBindingStart: failed to enable controller\n"));
goto CLOSE_PCIIO;
}
//
// Create then install USB2_HC_PROTOCOL
//
Ehc = EhcCreateUsb2Hc (PciIo, OriginalPciAttributes);
if (Ehc == NULL) {
EHC_ERROR (("EhcDriverBindingStart: failed to create USB2_HC\n"));
Status = EFI_OUT_OF_RESOURCES;
goto CLOSE_PCIIO;
}
Status = gBS->InstallProtocolInterface (
&Controller,
&gEfiUsb2HcProtocolGuid,
EFI_NATIVE_INTERFACE,
&Ehc->Usb2Hc
);
if (EFI_ERROR (Status)) {
EHC_ERROR (("EhcDriverBindingStart: failed to install USB2_HC Protocol\n"));
goto FREE_POOL;
}
//
// Robustnesss improvement such as for UoL
//
EhcClearLegacySupport (Ehc);
EhcResetHC (Ehc, EHC_RESET_TIMEOUT);
Status = EhcInitHC (Ehc);
if (EFI_ERROR (Status)) {
EHC_ERROR (("EhcDriverBindingStart: failed to init host controller\n"));
goto UNINSTALL_USBHC;
}
//
// Start the asynchronous interrupt monitor
//
Status = gBS->SetTimer (Ehc->PollTimer, TimerPeriodic, EHC_ASYNC_POLL_INTERVAL);
if (EFI_ERROR (Status)) {
EHC_ERROR (("EhcDriverBindingStart: failed to start async interrupt monitor\n"));
EhcHaltHC (Ehc, EHC_GENERIC_TIMEOUT);
goto UNINSTALL_USBHC;
}
//
// Install the component name protocol, don't fail the start
// because of something for display.
//
AddUnicodeString2 (
"eng",
gEhciComponentName.SupportedLanguages,
&Ehc->ControllerNameTable,
L"Enhanced Host Controller (USB 2.0)",
TRUE
);
AddUnicodeString2 (
"en",
gEhciComponentName2.SupportedLanguages,
&Ehc->ControllerNameTable,
L"Enhanced Host Controller (USB 2.0)",
FALSE
);
EHC_DEBUG (("EhcDriverBindingStart: EHCI started for controller @ %x\n", Controller));
return EFI_SUCCESS;
UNINSTALL_USBHC:
gBS->UninstallProtocolInterface (
Controller,
&gEfiUsb2HcProtocolGuid,
&Ehc->Usb2Hc
);
FREE_POOL:
EhcFreeSched (Ehc);
gBS->CloseEvent (Ehc->PollTimer);
gBS->FreePool (Ehc);
CLOSE_PCIIO:
if (PciAttributesSaved == TRUE) {
//
// Restore original PCI attributes
//
PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationSet,
OriginalPciAttributes,
NULL
);
}
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
/**
Stop this driver on ControllerHandle. Support stoping any child handles
created by this driver.
@param This Protocol instance pointer.
@param Controller Handle of device to stop driver on
@param NumberOfChildren Number of Children in the ChildHandleBuffer
@param ChildHandleBuffer List of handles for the children we need to stop.
@return EFI_SUCCESS Success
@return EFI_DEVICE_ERROR Fail
**/
EFI_STATUS
EFIAPI
EhcDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
{
EFI_STATUS Status;
EFI_USB2_HC_PROTOCOL *Usb2Hc;
EFI_PCI_IO_PROTOCOL *PciIo;
USB2_HC_DEV *Ehc;
//
// Test whether the Controller handler passed in is a valid
// Usb controller handle that should be supported, if not,
// return the error status directly
//
Status = gBS->OpenProtocol (
Controller,
&gEfiUsb2HcProtocolGuid,
(VOID **) &Usb2Hc,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return Status;
}
Ehc = EHC_FROM_THIS (Usb2Hc);
PciIo = Ehc->PciIo;
//
// Stop AsyncRequest Polling timer then stop the EHCI driver
// and uninstall the EHCI protocl.
//
gBS->SetTimer (Ehc->PollTimer, TimerCancel, EHC_ASYNC_POLL_INTERVAL);
EhcHaltHC (Ehc, EHC_GENERIC_TIMEOUT);
Status = gBS->UninstallProtocolInterface (
Controller,
&gEfiUsb2HcProtocolGuid,
Usb2Hc
);
if (EFI_ERROR (Status)) {
return Status;
}
if (Ehc->PollTimer != NULL) {
gBS->CloseEvent (Ehc->PollTimer);
}
EhcFreeSched (Ehc);
if (Ehc->ControllerNameTable) {
FreeUnicodeStringTable (Ehc->ControllerNameTable);
}
//
// Restore original PCI attributes
//
PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationSet,
Ehc->OriginalPciAttributes,
NULL
);
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
FreePool (Ehc);
return EFI_SUCCESS;
}
EFI_DRIVER_BINDING_PROTOCOL
gEhciDriverBinding = {
EhcDriverBindingSupported,
EhcDriverBindingStart,
EhcDriverBindingStop,
0x10,
NULL,
NULL
};
Reference in New Issue View Git Blame Copy Permalink