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system76-edk2/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.c
Michael D Kinney 9d510e61fc MdeModulePkg: Replace BSD License with BSD+Patent License 
https://bugzilla.tianocore.org/show_bug.cgi?id=1373

Replace BSD 2-Clause License with BSD+Patent License.  This change is
based on the following emails:

  https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html
  https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html

RFCs with detailed process for the license change:

  V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html
  V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html
  V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
2019-04-09 10:58:08 -07:00

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/** @file
The XHCI controller driver.
Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "Xhci.h"
//
// Two arrays used to translate the XHCI port state (change)
// to the UEFI protocol's port state (change).
//
USB_PORT_STATE_MAP mUsbPortStateMap[] = {
{XHC_PORTSC_CCS, USB_PORT_STAT_CONNECTION},
{XHC_PORTSC_PED, USB_PORT_STAT_ENABLE},
{XHC_PORTSC_OCA, USB_PORT_STAT_OVERCURRENT},
{XHC_PORTSC_RESET, USB_PORT_STAT_RESET}
};
USB_PORT_STATE_MAP mUsbPortChangeMap[] = {
{XHC_PORTSC_CSC, USB_PORT_STAT_C_CONNECTION},
{XHC_PORTSC_PEC, USB_PORT_STAT_C_ENABLE},
{XHC_PORTSC_OCC, USB_PORT_STAT_C_OVERCURRENT},
{XHC_PORTSC_PRC, USB_PORT_STAT_C_RESET}
};
USB_CLEAR_PORT_MAP mUsbClearPortChangeMap[] = {
{XHC_PORTSC_CSC, EfiUsbPortConnectChange},
{XHC_PORTSC_PEC, EfiUsbPortEnableChange},
{XHC_PORTSC_OCC, EfiUsbPortOverCurrentChange},
{XHC_PORTSC_PRC, EfiUsbPortResetChange}
};
USB_PORT_STATE_MAP mUsbHubPortStateMap[] = {
{XHC_HUB_PORTSC_CCS, USB_PORT_STAT_CONNECTION},
{XHC_HUB_PORTSC_PED, USB_PORT_STAT_ENABLE},
{XHC_HUB_PORTSC_OCA, USB_PORT_STAT_OVERCURRENT},
{XHC_HUB_PORTSC_RESET, USB_PORT_STAT_RESET}
};
USB_PORT_STATE_MAP mUsbHubPortChangeMap[] = {
{XHC_HUB_PORTSC_CSC, USB_PORT_STAT_C_CONNECTION},
{XHC_HUB_PORTSC_PEC, USB_PORT_STAT_C_ENABLE},
{XHC_HUB_PORTSC_OCC, USB_PORT_STAT_C_OVERCURRENT},
{XHC_HUB_PORTSC_PRC, USB_PORT_STAT_C_RESET}
};
USB_CLEAR_PORT_MAP mUsbHubClearPortChangeMap[] = {
{XHC_HUB_PORTSC_CSC, EfiUsbPortConnectChange},
{XHC_HUB_PORTSC_PEC, EfiUsbPortEnableChange},
{XHC_HUB_PORTSC_OCC, EfiUsbPortOverCurrentChange},
{XHC_HUB_PORTSC_PRC, EfiUsbPortResetChange},
{XHC_HUB_PORTSC_BHRC, Usb3PortBHPortResetChange}
};
EFI_DRIVER_BINDING_PROTOCOL gXhciDriverBinding = {
XhcDriverBindingSupported,
XhcDriverBindingStart,
XhcDriverBindingStop,
0x30,
NULL,
NULL
};
//
// Template for Xhci's Usb2 Host Controller Protocol Instance.
//
EFI_USB2_HC_PROTOCOL gXhciUsb2HcTemplate = {
XhcGetCapability,
XhcReset,
XhcGetState,
XhcSetState,
XhcControlTransfer,
XhcBulkTransfer,
XhcAsyncInterruptTransfer,
XhcSyncInterruptTransfer,
XhcIsochronousTransfer,
XhcAsyncIsochronousTransfer,
XhcGetRootHubPortStatus,
XhcSetRootHubPortFeature,
XhcClearRootHubPortFeature,
0x3,
0x0
};
/**
Retrieves the capability of root hub ports.
@param This The EFI_USB2_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.
@retval EFI_SUCCESS Host controller capability were retrieved successfully.
@retval EFI_INVALID_PARAMETER Either of the three capability pointer is NULL.
**/
EFI_STATUS
EFIAPI
XhcGetCapability (
IN EFI_USB2_HC_PROTOCOL *This,
OUT UINT8 *MaxSpeed,
OUT UINT8 *PortNumber,
OUT UINT8 *Is64BitCapable
)
{
USB_XHCI_INSTANCE *Xhc;
EFI_TPL OldTpl;
if ((MaxSpeed == NULL) || (PortNumber == NULL) || (Is64BitCapable == NULL)) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (XHC_TPL);
Xhc = XHC_FROM_THIS (This);
*MaxSpeed = EFI_USB_SPEED_SUPER;
*PortNumber = (UINT8) (Xhc->HcSParams1.Data.MaxPorts);
*Is64BitCapable = (UINT8) Xhc->Support64BitDma;
DEBUG ((EFI_D_INFO, "XhcGetCapability: %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.
@retval EFI_SUCCESS The reset operation succeeded.
@retval EFI_INVALID_PARAMETER Attributes is not valid.
@retval EFI_UNSUPPOURTED The type of reset specified by Attributes is
not currently supported by the host controller.
@retval EFI_DEVICE_ERROR Host controller isn't halted to reset.
**/
EFI_STATUS
EFIAPI
XhcReset (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT16 Attributes
)
{
USB_XHCI_INSTANCE *Xhc;
EFI_STATUS Status;
EFI_TPL OldTpl;
Xhc = XHC_FROM_THIS (This);
if (Xhc->DevicePath != NULL) {
//
// Report Status Code to indicate reset happens
//
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
EFI_PROGRESS_CODE,
(EFI_IO_BUS_USB | EFI_IOB_PC_RESET),
Xhc->DevicePath
);
}
OldTpl = gBS->RaiseTPL (XHC_TPL);
switch (Attributes) {
case EFI_USB_HC_RESET_GLOBAL:
//
// Flow through, same behavior as Host Controller Reset
//
case EFI_USB_HC_RESET_HOST_CONTROLLER:
if ((Xhc->DebugCapSupOffset != 0xFFFFFFFF) && ((XhcReadExtCapReg (Xhc, Xhc->DebugCapSupOffset) & 0xFF) == XHC_CAP_USB_DEBUG) &&
((XhcReadExtCapReg (Xhc, Xhc->DebugCapSupOffset + XHC_DC_DCCTRL) & BIT0) != 0)) {
Status = EFI_SUCCESS;
goto ON_EXIT;
}
//
// Host Controller must be Halt when Reset it
//
if (!XhcIsHalt (Xhc)) {
Status = XhcHaltHC (Xhc, XHC_GENERIC_TIMEOUT);
if (EFI_ERROR (Status)) {
Status = EFI_DEVICE_ERROR;
goto ON_EXIT;
}
}
Status = XhcResetHC (Xhc, XHC_RESET_TIMEOUT);
ASSERT (!(XHC_REG_BIT_IS_SET (Xhc, XHC_USBSTS_OFFSET, XHC_USBSTS_CNR)));
if (EFI_ERROR (Status)) {
goto ON_EXIT;
}
//
// Clean up the asynchronous transfers, currently only
// interrupt supports asynchronous operation.
//
XhciDelAllAsyncIntTransfers (Xhc);
XhcFreeSched (Xhc);
XhcInitSched (Xhc);
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:
DEBUG ((EFI_D_INFO, "XhcReset: 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.
@retval EFI_SUCCESS Host controller state was returned in State.
@retval EFI_INVALID_PARAMETER State is NULL.
@retval EFI_DEVICE_ERROR An error was encountered while attempting to
retrieve the host controller's current state.
**/
EFI_STATUS
EFIAPI
XhcGetState (
IN EFI_USB2_HC_PROTOCOL *This,
OUT EFI_USB_HC_STATE *State
)
{
USB_XHCI_INSTANCE *Xhc;
EFI_TPL OldTpl;
if (State == NULL) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (XHC_TPL);
Xhc = XHC_FROM_THIS (This);
if (XHC_REG_BIT_IS_SET (Xhc, XHC_USBSTS_OFFSET, XHC_USBSTS_HALT)) {
*State = EfiUsbHcStateHalt;
} else {
*State = EfiUsbHcStateOperational;
}
DEBUG ((EFI_D_INFO, "XhcGetState: current state %d\n", *State));
gBS->RestoreTPL (OldTpl);
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.
@retval EFI_SUCCESS The USB host controller was successfully placed
in the state specified by State.
@retval EFI_INVALID_PARAMETER State is invalid.
@retval EFI_DEVICE_ERROR Failed to set the state due to device error.
**/
EFI_STATUS
EFIAPI
XhcSetState (
IN EFI_USB2_HC_PROTOCOL *This,
IN EFI_USB_HC_STATE State
)
{
USB_XHCI_INSTANCE *Xhc;
EFI_STATUS Status;
EFI_USB_HC_STATE CurState;
EFI_TPL OldTpl;
Status = XhcGetState (This, &CurState);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
if (CurState == State) {
return EFI_SUCCESS;
}
OldTpl = gBS->RaiseTPL (XHC_TPL);
Xhc = XHC_FROM_THIS (This);
switch (State) {
case EfiUsbHcStateHalt:
Status = XhcHaltHC (Xhc, XHC_GENERIC_TIMEOUT);
break;
case EfiUsbHcStateOperational:
if (XHC_REG_BIT_IS_SET (Xhc, XHC_USBSTS_OFFSET, XHC_USBSTS_HSE)) {
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[XHCI1.0-2.3.1]
//
if (!XHC_REG_BIT_IS_SET (Xhc, XHC_USBSTS_OFFSET, XHC_USBSTS_HALT)) {
Status = EFI_DEVICE_ERROR;
break;
}
Status = XhcRunHC (Xhc, XHC_GENERIC_TIMEOUT);
break;
case EfiUsbHcStateSuspend:
Status = EFI_UNSUPPORTED;
break;
default:
Status = EFI_INVALID_PARAMETER;
}
DEBUG ((EFI_D_INFO, "XhcSetState: 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.
@retval EFI_SUCCESS The status of the USB root hub port specified.
by PortNumber was returned in PortStatus.
@retval EFI_INVALID_PARAMETER PortNumber is invalid.
@retval EFI_DEVICE_ERROR Can't read register.
**/
EFI_STATUS
EFIAPI
XhcGetRootHubPortStatus (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT8 PortNumber,
OUT EFI_USB_PORT_STATUS *PortStatus
)
{
USB_XHCI_INSTANCE *Xhc;
UINT32 Offset;
UINT32 State;
UINT32 TotalPort;
UINTN Index;
UINTN MapSize;
EFI_STATUS Status;
USB_DEV_ROUTE ParentRouteChart;
EFI_TPL OldTpl;
if (PortStatus == NULL) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (XHC_TPL);
Xhc = XHC_FROM_THIS (This);
Status = EFI_SUCCESS;
TotalPort = Xhc->HcSParams1.Data.MaxPorts;
if (PortNumber >= TotalPort) {
Status = EFI_INVALID_PARAMETER;
goto ON_EXIT;
}
Offset = (UINT32) (XHC_PORTSC_OFFSET + (0x10 * PortNumber));
PortStatus->PortStatus = 0;
PortStatus->PortChangeStatus = 0;
State = XhcReadOpReg (Xhc, Offset);
//
// According to XHCI 1.1 spec November 2017,
// bit 10~13 of the root port status register identifies the speed of the attached device.
//
switch ((State & XHC_PORTSC_PS) >> 10) {
case 2:
PortStatus->PortStatus |= USB_PORT_STAT_LOW_SPEED;
break;
case 3:
PortStatus->PortStatus |= USB_PORT_STAT_HIGH_SPEED;
break;
case 4:
case 5:
PortStatus->PortStatus |= USB_PORT_STAT_SUPER_SPEED;
break;
default:
break;
}
//
// Convert the XHCI port/port change state to UEFI status
//
MapSize = sizeof (mUsbPortStateMap) / sizeof (USB_PORT_STATE_MAP);
for (Index = 0; Index < MapSize; Index++) {
if (XHC_BIT_IS_SET (State, mUsbPortStateMap[Index].HwState)) {
PortStatus->PortStatus = (UINT16) (PortStatus->PortStatus | mUsbPortStateMap[Index].UefiState);
}
}
//
// Bit5~8 reflects its current link state.
//
if ((State & XHC_PORTSC_PLS) >> 5 == 3) {
PortStatus->PortStatus |= USB_PORT_STAT_SUSPEND;
}
MapSize = sizeof (mUsbPortChangeMap) / sizeof (USB_PORT_STATE_MAP);
for (Index = 0; Index < MapSize; Index++) {
if (XHC_BIT_IS_SET (State, mUsbPortChangeMap[Index].HwState)) {
PortStatus->PortChangeStatus = (UINT16) (PortStatus->PortChangeStatus | mUsbPortChangeMap[Index].UefiState);
}
}
MapSize = sizeof (mUsbClearPortChangeMap) / sizeof (USB_CLEAR_PORT_MAP);
for (Index = 0; Index < MapSize; Index++) {
if (XHC_BIT_IS_SET (State, mUsbClearPortChangeMap[Index].HwState)) {
XhcClearRootHubPortFeature (This, PortNumber, (EFI_USB_PORT_FEATURE)mUsbClearPortChangeMap[Index].Selector);
}
}
//
// Poll the root port status register to enable/disable corresponding device slot if there is a device attached/detached.
// For those devices behind hub, we get its attach/detach event by hooking Get_Port_Status request at control transfer for those hub.
//
ParentRouteChart.Dword = 0;
XhcPollPortStatusChange (Xhc, ParentRouteChart, PortNumber, PortStatus);
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.
@retval EFI_SUCCESS The feature specified by PortFeature was set.
@retval EFI_INVALID_PARAMETER PortNumber is invalid or PortFeature is invalid.
@retval EFI_DEVICE_ERROR Can't read register.
**/
EFI_STATUS
EFIAPI
XhcSetRootHubPortFeature (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT8 PortNumber,
IN EFI_USB_PORT_FEATURE PortFeature
)
{
USB_XHCI_INSTANCE *Xhc;
UINT32 Offset;
UINT32 State;
UINT32 TotalPort;
EFI_STATUS Status;
EFI_TPL OldTpl;
OldTpl = gBS->RaiseTPL (XHC_TPL);
Xhc = XHC_FROM_THIS (This);
Status = EFI_SUCCESS;
TotalPort = (Xhc->HcSParams1.Data.MaxPorts);
if (PortNumber >= TotalPort) {
Status = EFI_INVALID_PARAMETER;
goto ON_EXIT;
}
Offset = (UINT32) (XHC_PORTSC_OFFSET + (0x10 * PortNumber));
State = XhcReadOpReg (Xhc, Offset);
//
// Mask off the port status change bits, these bits are
// write clean bit
//
State &= ~ (BIT1 | BIT17 | BIT18 | BIT19 | BIT20 | BIT21 | BIT22 | BIT23);
switch (PortFeature) {
case EfiUsbPortEnable:
//
// Ports may only be enabled by the xHC. Software cannot enable a port by writing a '1' to this flag.
// A port may be disabled by software writing a '1' to this flag.
//
Status = EFI_SUCCESS;
break;
case EfiUsbPortSuspend:
State |= XHC_PORTSC_LWS;
XhcWriteOpReg (Xhc, Offset, State);
State &= ~XHC_PORTSC_PLS;
State |= (3 << 5) ;
XhcWriteOpReg (Xhc, Offset, State);
break;
case EfiUsbPortReset:
DEBUG ((EFI_D_INFO, "XhcUsbPortReset!\n"));
//
// Make sure Host Controller not halt before reset it
//
if (XhcIsHalt (Xhc)) {
Status = XhcRunHC (Xhc, XHC_GENERIC_TIMEOUT);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_INFO, "XhcSetRootHubPortFeature :failed to start HC - %r\n", Status));
break;
}
}
//
// 4.3.1 Resetting a Root Hub Port
// 1) Write the PORTSC register with the Port Reset (PR) bit set to '1'.
//
State |= XHC_PORTSC_RESET;
XhcWriteOpReg (Xhc, Offset, State);
XhcWaitOpRegBit(Xhc, Offset, XHC_PORTSC_PRC, TRUE, XHC_GENERIC_TIMEOUT);
break;
case EfiUsbPortPower:
//
// Not supported, ignore the operation
//
Status = EFI_SUCCESS;
break;
case EfiUsbPortOwner:
//
// XHCI root hub port don't has the owner bit, ignore the operation
//
Status = EFI_SUCCESS;
break;
default:
Status = EFI_INVALID_PARAMETER;
}
ON_EXIT:
DEBUG ((EFI_D_INFO, "XhcSetRootHubPortFeature: 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.
@retval EFI_SUCCESS The feature specified by PortFeature was cleared
for the USB root hub port specified by PortNumber.
@retval EFI_INVALID_PARAMETER PortNumber is invalid or PortFeature is invalid.
@retval EFI_DEVICE_ERROR Can't read register.
**/
EFI_STATUS
EFIAPI
XhcClearRootHubPortFeature (
IN EFI_USB2_HC_PROTOCOL *This,
IN UINT8 PortNumber,
IN EFI_USB_PORT_FEATURE PortFeature
)
{
USB_XHCI_INSTANCE *Xhc;
UINT32 Offset;
UINT32 State;
UINT32 TotalPort;
EFI_STATUS Status;
EFI_TPL OldTpl;
OldTpl = gBS->RaiseTPL (XHC_TPL);
Xhc = XHC_FROM_THIS (This);
Status = EFI_SUCCESS;
TotalPort = (Xhc->HcSParams1.Data.MaxPorts);
if (PortNumber >= TotalPort) {
Status = EFI_INVALID_PARAMETER;
goto ON_EXIT;
}
Offset = XHC_PORTSC_OFFSET + (0x10 * PortNumber);
//
// Mask off the port status change bits, these bits are
// write clean bit
//
State = XhcReadOpReg (Xhc, Offset);
State &= ~ (BIT1 | BIT17 | BIT18 | BIT19 | BIT20 | BIT21 | BIT22 | BIT23);
switch (PortFeature) {
case EfiUsbPortEnable:
//
// Ports may only be enabled by the xHC. Software cannot enable a port by writing a '1' to this flag.
// A port may be disabled by software writing a '1' to this flag.
//
State |= XHC_PORTSC_PED;
State &= ~XHC_PORTSC_RESET;
XhcWriteOpReg (Xhc, Offset, State);
break;
case EfiUsbPortSuspend:
State |= XHC_PORTSC_LWS;
XhcWriteOpReg (Xhc, Offset, State);
State &= ~XHC_PORTSC_PLS;
XhcWriteOpReg (Xhc, Offset, State);
break;
case EfiUsbPortReset:
//
// PORTSC_RESET BIT(4) bit is RW1S attribute, which means Write-1-to-set status:
// Register bits indicate status when read, a clear bit may be set by
// writing a '1'. Writing a '0' to RW1S bits has no effect.
//
break;
case EfiUsbPortOwner:
//
// XHCI root hub port don't has the owner bit, ignore the operation
//
break;
case EfiUsbPortConnectChange:
//
// Clear connect status change
//
State |= XHC_PORTSC_CSC;
XhcWriteOpReg (Xhc, Offset, State);
break;
case EfiUsbPortEnableChange:
//
// Clear enable status change
//
State |= XHC_PORTSC_PEC;
XhcWriteOpReg (Xhc, Offset, State);
break;
case EfiUsbPortOverCurrentChange:
//
// Clear PortOverCurrent change
//
State |= XHC_PORTSC_OCC;
XhcWriteOpReg (Xhc, Offset, State);
break;
case EfiUsbPortResetChange:
//
// Clear Port Reset change
//
State |= XHC_PORTSC_PRC;
XhcWriteOpReg (Xhc, Offset, State);
break;
case EfiUsbPortPower:
case EfiUsbPortSuspendChange:
//
// Not supported or not related operation
//
break;
default:
Status = EFI_INVALID_PARAMETER;
break;
}
ON_EXIT:
DEBUG ((EFI_D_INFO, "XhcClearRootHubPortFeature: status %r\n", Status));
gBS->RestoreTPL (OldTpl);
return Status;
}
/**
Submits a new transaction to a target USB device.
@param Xhc The XHCI Instance.
@param DeviceAddress The target device address.
@param EndPointAddress Endpoint number and its direction encoded in bit 7
@param DeviceSpeed Target device speed.
@param MaximumPacketLength Maximum packet size the default control transfer
endpoint is capable of sending or receiving.
@param Type The transaction type.
@param Request USB device request to send.
@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 TransferResult Return the result of this control transfer.
@retval EFI_SUCCESS Transfer was completed successfully.
@retval EFI_OUT_OF_RESOURCES The transfer failed due to lack of resources.
@retval EFI_INVALID_PARAMETER Some parameters are invalid.
@retval EFI_TIMEOUT Transfer failed due to timeout.
@retval EFI_DEVICE_ERROR Transfer failed due to host controller or device error.
**/
EFI_STATUS
XhcTransfer (
IN USB_XHCI_INSTANCE *Xhc,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN UINTN Type,
IN EFI_USB_DEVICE_REQUEST *Request,
IN OUT VOID *Data,
IN OUT UINTN *DataLength,
IN UINTN Timeout,
OUT UINT32 *TransferResult
)
{
EFI_STATUS Status;
EFI_STATUS RecoveryStatus;
URB *Urb;
ASSERT ((Type == XHC_CTRL_TRANSFER) || (Type == XHC_BULK_TRANSFER) || (Type == XHC_INT_TRANSFER_SYNC));
Urb = XhcCreateUrb (
Xhc,
DeviceAddress,
EndPointAddress,
DeviceSpeed,
MaximumPacketLength,
Type,
Request,
Data,
*DataLength,
NULL,
NULL
);
if (Urb == NULL) {
DEBUG ((DEBUG_ERROR, "XhcTransfer[Type=%d]: failed to create URB!\n", Type));
return EFI_OUT_OF_RESOURCES;
}
Status = XhcExecTransfer (Xhc, FALSE, Urb, Timeout);
if (Status == EFI_TIMEOUT) {
//
// The transfer timed out. Abort the transfer by dequeueing of the TD.
//
RecoveryStatus = XhcDequeueTrbFromEndpoint(Xhc, Urb);
if (RecoveryStatus == EFI_ALREADY_STARTED) {
//
// The URB is finished just before stopping endpoint.
// Change returning status from EFI_TIMEOUT to EFI_SUCCESS.
//
ASSERT (Urb->Result == EFI_USB_NOERROR);
Status = EFI_SUCCESS;
DEBUG ((DEBUG_ERROR, "XhcTransfer[Type=%d]: pending URB is finished, Length = %d.\n", Type, Urb->Completed));
} else if (EFI_ERROR(RecoveryStatus)) {
DEBUG((DEBUG_ERROR, "XhcTransfer[Type=%d]: XhcDequeueTrbFromEndpoint failed!\n", Type));
}
}
*TransferResult = Urb->Result;
*DataLength = Urb->Completed;
if ((*TransferResult == EFI_USB_ERR_STALL) || (*TransferResult == EFI_USB_ERR_BABBLE)) {
ASSERT (Status == EFI_DEVICE_ERROR);
RecoveryStatus = XhcRecoverHaltedEndpoint(Xhc, Urb);
if (EFI_ERROR (RecoveryStatus)) {
DEBUG ((DEBUG_ERROR, "XhcTransfer[Type=%d]: XhcRecoverHaltedEndpoint failed!\n", Type));
}
}
Xhc->PciIo->Flush (Xhc->PciIo);
XhcFreeUrb (Xhc, Urb);
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.
@retval EFI_SUCCESS Transfer was completed successfully.
@retval EFI_OUT_OF_RESOURCES The transfer failed due to lack of resources.
@retval EFI_INVALID_PARAMETER Some parameters are invalid.
@retval EFI_TIMEOUT Transfer failed due to timeout.
@retval EFI_DEVICE_ERROR Transfer failed due to host controller or device error.
**/
EFI_STATUS
EFIAPI
XhcControlTransfer (
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
)
{
USB_XHCI_INSTANCE *Xhc;
UINT8 Endpoint;
UINT8 Index;
UINT8 DescriptorType;
UINT8 SlotId;
UINT8 TTT;
UINT8 MTT;
UINT32 MaxPacket0;
EFI_USB_HUB_DESCRIPTOR *HubDesc;
EFI_TPL OldTpl;
EFI_STATUS Status;
UINTN MapSize;
EFI_USB_PORT_STATUS PortStatus;
UINT32 State;
EFI_USB_DEVICE_REQUEST ClearPortRequest;
UINTN Len;
//
// 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) &&
(MaximumPacketLength != 512)
) {
return EFI_INVALID_PARAMETER;
}
if ((DeviceSpeed == EFI_USB_SPEED_LOW) && (MaximumPacketLength != 8)) {
return EFI_INVALID_PARAMETER;
}
if ((DeviceSpeed == EFI_USB_SPEED_SUPER) && (MaximumPacketLength != 512)) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (XHC_TPL);
Xhc = XHC_FROM_THIS (This);
Status = EFI_DEVICE_ERROR;
*TransferResult = EFI_USB_ERR_SYSTEM;
Len = 0;
if (XhcIsHalt (Xhc) || XhcIsSysError (Xhc)) {
DEBUG ((EFI_D_ERROR, "XhcControlTransfer: HC halted at entrance\n"));
goto ON_EXIT;
}
//
// Check if the device is still enabled before every transaction.
//
SlotId = XhcBusDevAddrToSlotId (Xhc, DeviceAddress);
if (SlotId == 0) {
goto ON_EXIT;
}
//
// Hook the Set_Address request from UsbBus.
// According to XHCI 1.0 spec, the Set_Address request is replaced by XHCI's Address_Device cmd.
//
if ((Request->Request == USB_REQ_SET_ADDRESS) &&
(Request->RequestType == USB_REQUEST_TYPE (EfiUsbNoData, USB_REQ_TYPE_STANDARD, USB_TARGET_DEVICE))) {
//
// Reset the BusDevAddr field of all disabled entries in UsbDevContext array firstly.
// This way is used to clean the history to avoid using wrong device address by XhcAsyncInterruptTransfer().
//
for (Index = 0; Index < 255; Index++) {
if (!Xhc->UsbDevContext[Index + 1].Enabled &&
(Xhc->UsbDevContext[Index + 1].SlotId == 0) &&
(Xhc->UsbDevContext[Index + 1].BusDevAddr == (UINT8)Request->Value)) {
Xhc->UsbDevContext[Index + 1].BusDevAddr = 0;
}
}
if (Xhc->UsbDevContext[SlotId].XhciDevAddr == 0) {
Status = EFI_DEVICE_ERROR;
goto ON_EXIT;
}
//
// The actual device address has been assigned by XHCI during initializing the device slot.
// So we just need establish the mapping relationship between the device address requested from UsbBus
// and the actual device address assigned by XHCI. The the following invocations through EFI_USB2_HC_PROTOCOL interface
// can find out the actual device address by it.
//
Xhc->UsbDevContext[SlotId].BusDevAddr = (UINT8)Request->Value;
Status = EFI_SUCCESS;
goto ON_EXIT;
}
//
// Create a new URB, insert it into the asynchronous
// schedule list, then poll the execution status.
// Note that we encode the direction in address although default control
// endpoint is bidirectional. XhcCreateUrb expects this
// combination of Ep addr and its direction.
//
Endpoint = (UINT8) (0 | ((TransferDirection == EfiUsbDataIn) ? 0x80 : 0));
Status = XhcTransfer (
Xhc,
DeviceAddress,
Endpoint,
DeviceSpeed,
MaximumPacketLength,
XHC_CTRL_TRANSFER,
Request,
Data,
DataLength,
Timeout,
TransferResult
);
if (EFI_ERROR (Status)) {
goto ON_EXIT;
}
//
// Hook Get_Descriptor request from UsbBus as we need evaluate context and configure endpoint.
// Hook Get_Status request form UsbBus as we need trace device attach/detach event happened at hub.
// Hook Set_Config request from UsbBus as we need configure device endpoint.
//
if ((Request->Request == USB_REQ_GET_DESCRIPTOR) &&
((Request->RequestType == USB_REQUEST_TYPE (EfiUsbDataIn, USB_REQ_TYPE_STANDARD, USB_TARGET_DEVICE)) ||
((Request->RequestType == USB_REQUEST_TYPE (EfiUsbDataIn, USB_REQ_TYPE_CLASS, USB_TARGET_DEVICE))))) {
DescriptorType = (UINT8)(Request->Value >> 8);
if ((DescriptorType == USB_DESC_TYPE_DEVICE) && ((*DataLength == sizeof (EFI_USB_DEVICE_DESCRIPTOR)) || ((DeviceSpeed == EFI_USB_SPEED_FULL) && (*DataLength == 8)))) {
ASSERT (Data != NULL);
//
// Store a copy of device scriptor as hub device need this info to configure endpoint.
//
CopyMem (&Xhc->UsbDevContext[SlotId].DevDesc, Data, *DataLength);
if (Xhc->UsbDevContext[SlotId].DevDesc.BcdUSB >= 0x0300) {
//
// If it's a usb3.0 device, then its max packet size is a 2^n.
//
MaxPacket0 = 1 << Xhc->UsbDevContext[SlotId].DevDesc.MaxPacketSize0;
} else {
MaxPacket0 = Xhc->UsbDevContext[SlotId].DevDesc.MaxPacketSize0;
}
Xhc->UsbDevContext[SlotId].ConfDesc = AllocateZeroPool (Xhc->UsbDevContext[SlotId].DevDesc.NumConfigurations * sizeof (EFI_USB_CONFIG_DESCRIPTOR *));
if (Xhc->HcCParams.Data.Csz == 0) {
Status = XhcEvaluateContext (Xhc, SlotId, MaxPacket0);
} else {
Status = XhcEvaluateContext64 (Xhc, SlotId, MaxPacket0);
}
} else if (DescriptorType == USB_DESC_TYPE_CONFIG) {
ASSERT (Data != NULL);
if (*DataLength == ((UINT16 *)Data)[1]) {
//
// Get configuration value from request, Store the configuration descriptor for Configure_Endpoint cmd.
//
Index = (UINT8)Request->Value;
ASSERT (Index < Xhc->UsbDevContext[SlotId].DevDesc.NumConfigurations);
Xhc->UsbDevContext[SlotId].ConfDesc[Index] = AllocateZeroPool(*DataLength);
CopyMem (Xhc->UsbDevContext[SlotId].ConfDesc[Index], Data, *DataLength);
//
// Default to use AlternateSetting 0 for all interfaces.
//
Xhc->UsbDevContext[SlotId].ActiveAlternateSetting = AllocateZeroPool (Xhc->UsbDevContext[SlotId].ConfDesc[Index]->NumInterfaces * sizeof (UINT8));
}
} else if (((DescriptorType == USB_DESC_TYPE_HUB) ||
(DescriptorType == USB_DESC_TYPE_HUB_SUPER_SPEED)) && (*DataLength > 2)) {
ASSERT (Data != NULL);
HubDesc = (EFI_USB_HUB_DESCRIPTOR *)Data;
ASSERT (HubDesc->NumPorts <= 15);
//
// The bit 5,6 of HubCharacter field of Hub Descriptor is TTT.
//
TTT = (UINT8)((HubDesc->HubCharacter & (BIT5 | BIT6)) >> 5);
if (Xhc->UsbDevContext[SlotId].DevDesc.DeviceProtocol == 2) {
//
// Don't support multi-TT feature for super speed hub now.
//
MTT = 0;
DEBUG ((EFI_D_ERROR, "XHCI: Don't support multi-TT feature for Hub now. (force to disable MTT)\n"));
} else {
MTT = 0;
}
if (Xhc->HcCParams.Data.Csz == 0) {
Status = XhcConfigHubContext (Xhc, SlotId, HubDesc->NumPorts, TTT, MTT);
} else {
Status = XhcConfigHubContext64 (Xhc, SlotId, HubDesc->NumPorts, TTT, MTT);
}
}
} else if ((Request->Request == USB_REQ_SET_CONFIG) &&
(Request->RequestType == USB_REQUEST_TYPE (EfiUsbNoData, USB_REQ_TYPE_STANDARD, USB_TARGET_DEVICE))) {
//
// Hook Set_Config request from UsbBus as we need configure device endpoint.
//
for (Index = 0; Index < Xhc->UsbDevContext[SlotId].DevDesc.NumConfigurations; Index++) {
if (Xhc->UsbDevContext[SlotId].ConfDesc[Index]->ConfigurationValue == (UINT8)Request->Value) {
if (Xhc->HcCParams.Data.Csz == 0) {
Status = XhcSetConfigCmd (Xhc, SlotId, DeviceSpeed, Xhc->UsbDevContext[SlotId].ConfDesc[Index]);
} else {
Status = XhcSetConfigCmd64 (Xhc, SlotId, DeviceSpeed, Xhc->UsbDevContext[SlotId].ConfDesc[Index]);
}
break;
}
}
} else if ((Request->Request == USB_REQ_SET_INTERFACE) &&
(Request->RequestType == USB_REQUEST_TYPE (EfiUsbNoData, USB_REQ_TYPE_STANDARD, USB_TARGET_INTERFACE))) {
//
// Hook Set_Interface request from UsbBus as we need configure interface setting.
// Request->Value indicates AlterlateSetting to set
// Request->Index indicates Interface to set
//
if (Xhc->UsbDevContext[SlotId].ActiveAlternateSetting[(UINT8) Request->Index] != (UINT8) Request->Value) {
if (Xhc->HcCParams.Data.Csz == 0) {
Status = XhcSetInterface (Xhc, SlotId, DeviceSpeed, Xhc->UsbDevContext[SlotId].ConfDesc[Xhc->UsbDevContext[SlotId].ActiveConfiguration - 1], Request);
} else {
Status = XhcSetInterface64 (Xhc, SlotId, DeviceSpeed, Xhc->UsbDevContext[SlotId].ConfDesc[Xhc->UsbDevContext[SlotId].ActiveConfiguration - 1], Request);
}
}
} else if ((Request->Request == USB_REQ_GET_STATUS) &&
(Request->RequestType == USB_REQUEST_TYPE (EfiUsbDataIn, USB_REQ_TYPE_CLASS, USB_TARGET_OTHER))) {
ASSERT (Data != NULL);
//
// Hook Get_Status request from UsbBus to keep track of the port status change.
//
State = *(UINT32 *)Data;
PortStatus.PortStatus = 0;
PortStatus.PortChangeStatus = 0;
if (DeviceSpeed == EFI_USB_SPEED_SUPER) {
//
// For super speed hub, its bit10~12 presents the attached device speed.
//
if ((State & XHC_PORTSC_PS) >> 10 == 0) {
PortStatus.PortStatus |= USB_PORT_STAT_SUPER_SPEED;
}
} else {
//
// For high or full/low speed hub, its bit9~10 presents the attached device speed.
//
if (XHC_BIT_IS_SET (State, BIT9)) {
PortStatus.PortStatus |= USB_PORT_STAT_LOW_SPEED;
} else if (XHC_BIT_IS_SET (State, BIT10)) {
PortStatus.PortStatus |= USB_PORT_STAT_HIGH_SPEED;
}
}
//
// Convert the XHCI port/port change state to UEFI status
//
MapSize = sizeof (mUsbHubPortStateMap) / sizeof (USB_PORT_STATE_MAP);
for (Index = 0; Index < MapSize; Index++) {
if (XHC_BIT_IS_SET (State, mUsbHubPortStateMap[Index].HwState)) {
PortStatus.PortStatus = (UINT16) (PortStatus.PortStatus | mUsbHubPortStateMap[Index].UefiState);
}
}
MapSize = sizeof (mUsbHubPortChangeMap) / sizeof (USB_PORT_STATE_MAP);
for (Index = 0; Index < MapSize; Index++) {
if (XHC_BIT_IS_SET (State, mUsbHubPortChangeMap[Index].HwState)) {
PortStatus.PortChangeStatus = (UINT16) (PortStatus.PortChangeStatus | mUsbHubPortChangeMap[Index].UefiState);
}
}
MapSize = sizeof (mUsbHubClearPortChangeMap) / sizeof (USB_CLEAR_PORT_MAP);
for (Index = 0; Index < MapSize; Index++) {
if (XHC_BIT_IS_SET (State, mUsbHubClearPortChangeMap[Index].HwState)) {
ZeroMem (&ClearPortRequest, sizeof (EFI_USB_DEVICE_REQUEST));
ClearPortRequest.RequestType = USB_REQUEST_TYPE (EfiUsbNoData, USB_REQ_TYPE_CLASS, USB_TARGET_OTHER);
ClearPortRequest.Request = (UINT8) USB_REQ_CLEAR_FEATURE;
ClearPortRequest.Value = mUsbHubClearPortChangeMap[Index].Selector;
ClearPortRequest.Index = Request->Index;
ClearPortRequest.Length = 0;
XhcControlTransfer (
This,
DeviceAddress,
DeviceSpeed,
MaximumPacketLength,
&ClearPortRequest,
EfiUsbNoData,
NULL,
&Len,
Timeout,
Translator,
TransferResult
);
}
}
XhcPollPortStatusChange (Xhc, Xhc->UsbDevContext[SlotId].RouteString, (UINT8)Request->Index, &PortStatus);
*(UINT32 *)Data = *(UINT32*)&PortStatus;
}
ON_EXIT:
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "XhcControlTransfer: error - %r, transfer - %x\n", Status, *TransferResult));
}
gBS->RestoreTPL (OldTpl);
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 Timeout Indicates the maximum time, in millisecond, which
the transfer is allowed to complete.
@param Translator A pointr to the transaction translator data.
@param TransferResult A pointer to the detailed result information of the
bulk transfer.
@retval EFI_SUCCESS The transfer was completed successfully.
@retval EFI_OUT_OF_RESOURCES The transfer failed due to lack of resource.
@retval EFI_INVALID_PARAMETER Some parameters are invalid.
@retval EFI_TIMEOUT The transfer failed due to timeout.
@retval EFI_DEVICE_ERROR The transfer failed due to host controller error.
**/
EFI_STATUS
EFIAPI
XhcBulkTransfer (
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
)
{
USB_XHCI_INSTANCE *Xhc;
UINT8 SlotId;
EFI_STATUS Status;
EFI_TPL OldTpl;
//
// 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)) ||
((EFI_USB_SPEED_SUPER == DeviceSpeed) && (MaximumPacketLength > 1024))) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (XHC_TPL);
Xhc = XHC_FROM_THIS (This);
*TransferResult = EFI_USB_ERR_SYSTEM;
Status = EFI_DEVICE_ERROR;
if (XhcIsHalt (Xhc) || XhcIsSysError (Xhc)) {
DEBUG ((EFI_D_ERROR, "XhcBulkTransfer: HC is halted\n"));
goto ON_EXIT;
}
//
// Check if the device is still enabled before every transaction.
//
SlotId = XhcBusDevAddrToSlotId (Xhc, DeviceAddress);
if (SlotId == 0) {
goto ON_EXIT;
}
//
// Create a new URB, insert it into the asynchronous
// schedule list, then poll the execution status.
//
Status = XhcTransfer (
Xhc,
DeviceAddress,
EndPointAddress,
DeviceSpeed,
MaximumPacketLength,
XHC_BULK_TRANSFER,
NULL,
Data[0],
DataLength,
Timeout,
TransferResult
);
ON_EXIT:
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "XhcBulkTransfer: error - %r, transfer - %x\n", Status, *TransferResult));
}
gBS->RestoreTPL (OldTpl);
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.
@retval EFI_SUCCESS The request has been successfully submitted or canceled.
@retval EFI_INVALID_PARAMETER Some parameters are invalid.
@retval EFI_OUT_OF_RESOURCES The request failed due to a lack of resources.
@retval EFI_DEVICE_ERROR The transfer failed due to host controller error.
**/
EFI_STATUS
EFIAPI
XhcAsyncInterruptTransfer (
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
)
{
USB_XHCI_INSTANCE *Xhc;
URB *Urb;
EFI_STATUS Status;
UINT8 SlotId;
UINT8 Index;
EFI_TPL OldTpl;
//
// Validate parameters
//
if (!XHCI_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 (XHC_TPL);
Xhc = XHC_FROM_THIS (This);
//
// Delete Async interrupt transfer request.
//
if (!IsNewTransfer) {
//
// The delete request may happen after device is detached.
//
for (Index = 0; Index < 255; Index++) {
if (Xhc->UsbDevContext[Index + 1].BusDevAddr == DeviceAddress) {
break;
}
}
if (Index == 255) {
Status = EFI_INVALID_PARAMETER;
goto ON_EXIT;
}
Status = XhciDelAsyncIntTransfer (Xhc, DeviceAddress, EndPointAddress);
DEBUG ((EFI_D_INFO, "XhcAsyncInterruptTransfer: remove old transfer for addr %d, Status = %r\n", DeviceAddress, Status));
goto ON_EXIT;
}
Status = EFI_SUCCESS;
if (XhcIsHalt (Xhc) || XhcIsSysError (Xhc)) {
DEBUG ((EFI_D_ERROR, "XhcAsyncInterruptTransfer: HC is halt\n"));
Status = EFI_DEVICE_ERROR;
goto ON_EXIT;
}
//
// Check if the device is still enabled before every transaction.
//
SlotId = XhcBusDevAddrToSlotId (Xhc, DeviceAddress);
if (SlotId == 0) {
goto ON_EXIT;
}
Urb = XhciInsertAsyncIntTransfer (
Xhc,
DeviceAddress,
EndPointAddress,
DeviceSpeed,
MaximumPacketLength,
DataLength,
CallBackFunction,
Context
);
if (Urb == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto ON_EXIT;
}
//
// Ring the doorbell
//
Status = RingIntTransferDoorBell (Xhc, Urb);
ON_EXIT:
Xhc->PciIo->Flush (Xhc->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
**/
EFI_STATUS
EFIAPI
XhcSyncInterruptTransfer (
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
)
{
USB_XHCI_INSTANCE *Xhc;
UINT8 SlotId;
EFI_STATUS Status;
EFI_TPL OldTpl;
//
// Validates parameters
//
if ((DataLength == NULL) || (*DataLength == 0) ||
(Data == NULL) || (TransferResult == NULL)) {
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 (XHC_TPL);
Xhc = XHC_FROM_THIS (This);
*TransferResult = EFI_USB_ERR_SYSTEM;
Status = EFI_DEVICE_ERROR;
if (XhcIsHalt (Xhc) || XhcIsSysError (Xhc)) {
DEBUG ((EFI_D_ERROR, "EhcSyncInterruptTransfer: HC is halt\n"));
goto ON_EXIT;
}
//
// Check if the device is still enabled before every transaction.
//
SlotId = XhcBusDevAddrToSlotId (Xhc, DeviceAddress);
if (SlotId == 0) {
goto ON_EXIT;
}
Status = XhcTransfer (
Xhc,
DeviceAddress,
EndPointAddress,
DeviceSpeed,
MaximumPacketLength,
XHC_INT_TRANSFER_SYNC,
NULL,
Data,
DataLength,
Timeout,
TransferResult
);
ON_EXIT:
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "XhcSyncInterruptTransfer: error - %r, transfer - %x\n", Status, *TransferResult));
}
gBS->RestoreTPL (OldTpl);
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.
**/
EFI_STATUS
EFIAPI
XhcIsochronousTransfer (
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.
**/
EFI_STATUS
EFIAPI
XhcAsyncIsochronousTransfer (
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;
}
/**
Entry point for EFI drivers.
@param ImageHandle EFI_HANDLE.
@param SystemTable EFI_SYSTEM_TABLE.
@retval EFI_SUCCESS Success.
@retval Others Fail.
**/
EFI_STATUS
EFIAPI
XhcDriverEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
return EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&gXhciDriverBinding,
ImageHandle,
&gXhciComponentName,
&gXhciComponentName2
);
}
/**
Test to see if this driver supports ControllerHandle. Any
ControllerHandle that has Usb2HcProtocol installed will
be supported.
@param This Protocol instance pointer.
@param Controller 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
XhcDriverBindingSupported (
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,
PCI_CLASSCODE_OFFSET,
sizeof (USB_CLASSC) / sizeof (UINT8),
&UsbClassCReg
);
if (EFI_ERROR (Status)) {
Status = EFI_UNSUPPORTED;
goto ON_EXIT;
}
//
// Test whether the controller belongs to Xhci type
//
if ((UsbClassCReg.BaseCode != PCI_CLASS_SERIAL) ||
(UsbClassCReg.SubClassCode != PCI_CLASS_SERIAL_USB) ||
(UsbClassCReg.ProgInterface != PCI_IF_XHCI)) {
Status = EFI_UNSUPPORTED;
}
ON_EXIT:
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
/**
Create and initialize a USB_XHCI_INSTANCE structure.
@param PciIo The PciIo on this device.
@param DevicePath The device path of host controller.
@param OriginalPciAttributes Original PCI attributes.
@return The allocated and initialized USB_XHCI_INSTANCE structure if created,
otherwise NULL.
**/
USB_XHCI_INSTANCE*
XhcCreateUsbHc (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN UINT64 OriginalPciAttributes
)
{
USB_XHCI_INSTANCE *Xhc;
EFI_STATUS Status;
UINT32 PageSize;
UINT16 ExtCapReg;
UINT8 ReleaseNumber;
Xhc = AllocateZeroPool (sizeof (USB_XHCI_INSTANCE));
if (Xhc == NULL) {
return NULL;
}
//
// Initialize private data structure
//
Xhc->Signature = XHCI_INSTANCE_SIG;
Xhc->PciIo = PciIo;
Xhc->DevicePath = DevicePath;
Xhc->OriginalPciAttributes = OriginalPciAttributes;
CopyMem (&Xhc->Usb2Hc, &gXhciUsb2HcTemplate, sizeof (EFI_USB2_HC_PROTOCOL));
Status = PciIo->Pci.Read (
PciIo,
EfiPciIoWidthUint8,
XHC_PCI_SBRN_OFFSET,
1,
&ReleaseNumber
);
if (!EFI_ERROR (Status)) {
Xhc->Usb2Hc.MajorRevision = (ReleaseNumber & 0xF0) >> 4;
Xhc->Usb2Hc.MinorRevision = (ReleaseNumber & 0x0F);
}
InitializeListHead (&Xhc->AsyncIntTransfers);
//
// Be caution that the Offset passed to XhcReadCapReg() should be Dword align
//
Xhc->CapLength = XhcReadCapReg8 (Xhc, XHC_CAPLENGTH_OFFSET);
Xhc->HcSParams1.Dword = XhcReadCapReg (Xhc, XHC_HCSPARAMS1_OFFSET);
Xhc->HcSParams2.Dword = XhcReadCapReg (Xhc, XHC_HCSPARAMS2_OFFSET);
Xhc->HcCParams.Dword = XhcReadCapReg (Xhc, XHC_HCCPARAMS_OFFSET);
Xhc->DBOff = XhcReadCapReg (Xhc, XHC_DBOFF_OFFSET);
Xhc->RTSOff = XhcReadCapReg (Xhc, XHC_RTSOFF_OFFSET);
//
// This PageSize field defines the page size supported by the xHC implementation.
// This xHC supports a page size of 2^(n+12) if bit n is Set. For example,
// if bit 0 is Set, the xHC supports 4k byte page sizes.
//
PageSize = XhcReadOpReg(Xhc, XHC_PAGESIZE_OFFSET) & XHC_PAGESIZE_MASK;
Xhc->PageSize = 1 << (HighBitSet32(PageSize) + 12);
ExtCapReg = (UINT16) (Xhc->HcCParams.Data.ExtCapReg);
Xhc->ExtCapRegBase = ExtCapReg << 2;
Xhc->UsbLegSupOffset = XhcGetCapabilityAddr (Xhc, XHC_CAP_USB_LEGACY);
Xhc->DebugCapSupOffset = XhcGetCapabilityAddr (Xhc, XHC_CAP_USB_DEBUG);
DEBUG ((EFI_D_INFO, "XhcCreateUsb3Hc: Capability length 0x%x\n", Xhc->CapLength));
DEBUG ((EFI_D_INFO, "XhcCreateUsb3Hc: HcSParams1 0x%x\n", Xhc->HcSParams1));
DEBUG ((EFI_D_INFO, "XhcCreateUsb3Hc: HcSParams2 0x%x\n", Xhc->HcSParams2));
DEBUG ((EFI_D_INFO, "XhcCreateUsb3Hc: HcCParams 0x%x\n", Xhc->HcCParams));
DEBUG ((EFI_D_INFO, "XhcCreateUsb3Hc: DBOff 0x%x\n", Xhc->DBOff));
DEBUG ((EFI_D_INFO, "XhcCreateUsb3Hc: RTSOff 0x%x\n", Xhc->RTSOff));
DEBUG ((EFI_D_INFO, "XhcCreateUsb3Hc: UsbLegSupOffset 0x%x\n", Xhc->UsbLegSupOffset));
DEBUG ((EFI_D_INFO, "XhcCreateUsb3Hc: DebugCapSupOffset 0x%x\n", Xhc->DebugCapSupOffset));
//
// Create AsyncRequest Polling Timer
//
Status = gBS->CreateEvent (
EVT_TIMER | EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
XhcMonitorAsyncRequests,
Xhc,
&Xhc->PollTimer
);
if (EFI_ERROR (Status)) {
goto ON_ERROR;
}
return Xhc;
ON_ERROR:
FreePool (Xhc);
return NULL;
}
/**
One notified function to stop the Host Controller when gBS->ExitBootServices() called.
@param Event Pointer to this event
@param Context Event handler private data
**/
VOID
EFIAPI
XhcExitBootService (
EFI_EVENT Event,
VOID *Context
)
{
USB_XHCI_INSTANCE *Xhc;
EFI_PCI_IO_PROTOCOL *PciIo;
Xhc = (USB_XHCI_INSTANCE*) Context;
PciIo = Xhc->PciIo;
//
// Stop AsyncRequest Polling timer then stop the XHCI driver
// and uninstall the XHCI protocl.
//
gBS->SetTimer (Xhc->PollTimer, TimerCancel, 0);
XhcHaltHC (Xhc, XHC_GENERIC_TIMEOUT);
if (Xhc->PollTimer != NULL) {
gBS->CloseEvent (Xhc->PollTimer);
}
XhcClearBiosOwnership (Xhc);
//
// Restore original PCI attributes
//
PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationSet,
Xhc->OriginalPciAttributes,
NULL
);
}
/**
Starting the Usb XHCI 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
XhcDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
UINT64 Supports;
UINT64 OriginalPciAttributes;
BOOLEAN PciAttributesSaved;
USB_XHCI_INSTANCE *Xhc;
EFI_DEVICE_PATH_PROTOCOL *HcDevicePath;
//
// 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)) {
return Status;
}
//
// Open Device Path Protocol for on USB host controller
//
HcDevicePath = NULL;
Status = gBS->OpenProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &HcDevicePath,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
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 &= (UINT64)EFI_PCI_DEVICE_ENABLE;
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationEnable,
Supports,
NULL
);
}
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "XhcDriverBindingStart: failed to enable controller\n"));
goto CLOSE_PCIIO;
}
//
// Create then install USB2_HC_PROTOCOL
//
Xhc = XhcCreateUsbHc (PciIo, HcDevicePath, OriginalPciAttributes);
if (Xhc == NULL) {
DEBUG ((EFI_D_ERROR, "XhcDriverBindingStart: failed to create USB2_HC\n"));
return EFI_OUT_OF_RESOURCES;
}
//
// Enable 64-bit DMA support in the PCI layer if this controller
// supports it.
//
if (Xhc->HcCParams.Data.Ac64 != 0) {
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationEnable,
EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE,
NULL
);
if (!EFI_ERROR (Status)) {
Xhc->Support64BitDma = TRUE;
} else {
DEBUG ((EFI_D_WARN,
"%a: failed to enable 64-bit DMA on 64-bit capable controller @ %p (%r)\n",
__FUNCTION__, Controller, Status));
}
}
XhcSetBiosOwnership (Xhc);
XhcResetHC (Xhc, XHC_RESET_TIMEOUT);
ASSERT (XhcIsHalt (Xhc));
//
// After Chip Hardware Reset wait until the Controller Not Ready (CNR) flag
// in the USBSTS is '0' before writing any xHC Operational or Runtime registers.
//
ASSERT (!(XHC_REG_BIT_IS_SET (Xhc, XHC_USBSTS_OFFSET, XHC_USBSTS_CNR)));
//
// Initialize the schedule
//
XhcInitSched (Xhc);
//
// Start the Host Controller
//
XhcRunHC(Xhc, XHC_GENERIC_TIMEOUT);
//
// Start the asynchronous interrupt monitor
//
Status = gBS->SetTimer (Xhc->PollTimer, TimerPeriodic, XHC_ASYNC_TIMER_INTERVAL);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "XhcDriverBindingStart: failed to start async interrupt monitor\n"));
XhcHaltHC (Xhc, XHC_GENERIC_TIMEOUT);
goto FREE_POOL;
}
//
// Create event to stop the HC when exit boot service.
//
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
XhcExitBootService,
Xhc,
&gEfiEventExitBootServicesGuid,
&Xhc->ExitBootServiceEvent
);
if (EFI_ERROR (Status)) {
goto FREE_POOL;
}
//
// Install the component name protocol, don't fail the start
// because of something for display.
//
AddUnicodeString2 (
"eng",
gXhciComponentName.SupportedLanguages,
&Xhc->ControllerNameTable,
L"eXtensible Host Controller (USB 3.0)",
TRUE
);
AddUnicodeString2 (
"en",
gXhciComponentName2.SupportedLanguages,
&Xhc->ControllerNameTable,
L"eXtensible Host Controller (USB 3.0)",
FALSE
);
Status = gBS->InstallProtocolInterface (
&Controller,
&gEfiUsb2HcProtocolGuid,
EFI_NATIVE_INTERFACE,
&Xhc->Usb2Hc
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "XhcDriverBindingStart: failed to install USB2_HC Protocol\n"));
goto FREE_POOL;
}
DEBUG ((EFI_D_INFO, "XhcDriverBindingStart: XHCI started for controller @ %x\n", Controller));
return EFI_SUCCESS;
FREE_POOL:
gBS->CloseEvent (Xhc->PollTimer);
XhcFreeSched (Xhc);
FreePool (Xhc);
CLOSE_PCIIO:
if (PciAttributesSaved) {
//
// 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 stopping 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
XhcDriverBindingStop (
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;
USB_XHCI_INSTANCE *Xhc;
UINT8 Index;
//
// 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;
}
Status = gBS->UninstallProtocolInterface (
Controller,
&gEfiUsb2HcProtocolGuid,
Usb2Hc
);
if (EFI_ERROR (Status)) {
return Status;
}
Xhc = XHC_FROM_THIS (Usb2Hc);
PciIo = Xhc->PciIo;
//
// Stop AsyncRequest Polling timer then stop the XHCI driver
// and uninstall the XHCI protocl.
//
gBS->SetTimer (Xhc->PollTimer, TimerCancel, 0);
//
// Disable the device slots occupied by these devices on its downstream ports.
// Entry 0 is reserved.
//
for (Index = 0; Index < 255; Index++) {
if (!Xhc->UsbDevContext[Index + 1].Enabled ||
(Xhc->UsbDevContext[Index + 1].SlotId == 0)) {
continue;
}
if (Xhc->HcCParams.Data.Csz == 0) {
XhcDisableSlotCmd (Xhc, Xhc->UsbDevContext[Index + 1].SlotId);
} else {
XhcDisableSlotCmd64 (Xhc, Xhc->UsbDevContext[Index + 1].SlotId);
}
}
if (Xhc->PollTimer != NULL) {
gBS->CloseEvent (Xhc->PollTimer);
}
if (Xhc->ExitBootServiceEvent != NULL) {
gBS->CloseEvent (Xhc->ExitBootServiceEvent);
}
XhcHaltHC (Xhc, XHC_GENERIC_TIMEOUT);
XhcClearBiosOwnership (Xhc);
XhciDelAllAsyncIntTransfers (Xhc);
XhcFreeSched (Xhc);
if (Xhc->ControllerNameTable) {
FreeUnicodeStringTable (Xhc->ControllerNameTable);
}
//
// Restore original PCI attributes
//
PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationSet,
Xhc->OriginalPciAttributes,
NULL
);
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
FreePool (Xhc);
return EFI_SUCCESS;
}
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