#include "XhcPeim.h"

Functions
URB *	XhcPeiCreateCmdTrb (IN PEI_XHC_DEV Xhc, IN TRB_TEMPLATE CmdTrb)

EFI_STATUS	XhcPeiCmdTransfer (IN PEI_XHC_DEV Xhc, IN TRB_TEMPLATE CmdTrb, IN UINTN Timeout, OUT TRB_TEMPLATE **EvtTrb)

URB *	XhcPeiCreateUrb (IN PEI_XHC_DEV Xhc, IN UINT8 BusAddr, IN UINT8 EpAddr, IN UINT8 DevSpeed, IN UINTN MaxPacket, IN UINTN Type, IN EFI_USB_DEVICE_REQUEST Request, IN VOID Data, IN UINTN DataLen, IN EFI_ASYNC_USB_TRANSFER_CALLBACK Callback, IN VOID Context)

VOID	XhcPeiFreeUrb (IN PEI_XHC_DEV Xhc, IN URB Urb)

EFI_STATUS	XhcPeiCreateTransferTrb (IN PEI_XHC_DEV Xhc, IN URB Urb)

EFI_STATUS	XhcPeiRecoverHaltedEndpoint (IN PEI_XHC_DEV Xhc, IN URB Urb)

EFI_STATUS	XhcPeiDequeueTrbFromEndpoint (IN PEI_XHC_DEV Xhc, IN URB Urb)

BOOLEAN	XhcPeiIsTransferRingTrb (IN TRB_TEMPLATE Trb, IN URB Urb)

BOOLEAN	XhcPeiCheckUrbResult (IN PEI_XHC_DEV Xhc, IN URB Urb)

EFI_STATUS	XhcPeiExecTransfer (IN PEI_XHC_DEV Xhc, IN BOOLEAN CmdTransfer, IN URB Urb, IN UINTN Timeout)

EFI_STATUS	XhcPeiPollPortStatusChange (IN PEI_XHC_DEV Xhc, IN USB_DEV_ROUTE ParentRouteChart, IN UINT8 Port, IN EFI_USB_PORT_STATUS PortState)

UINT8	XhcPeiEndpointToDci (IN UINT8 EpAddr, IN EFI_USB_DATA_DIRECTION Direction)

UINT8	XhcPeiBusDevAddrToSlotId (IN PEI_XHC_DEV *Xhc, IN UINT8 BusDevAddr)

UINT8	XhcPeiRouteStringToSlotId (IN PEI_XHC_DEV *Xhc, IN USB_DEV_ROUTE RouteString)

VOID	XhcPeiRingDoorBell (IN PEI_XHC_DEV *Xhc, IN UINT8 SlotId, IN UINT8 Dci)

EFI_STATUS	XhcPeiInitializeDeviceSlot (IN PEI_XHC_DEV *Xhc, IN USB_DEV_ROUTE ParentRouteChart, IN UINT16 ParentPort, IN USB_DEV_ROUTE RouteChart, IN UINT8 DeviceSpeed)

EFI_STATUS	XhcPeiInitializeDeviceSlot64 (IN PEI_XHC_DEV *Xhc, IN USB_DEV_ROUTE ParentRouteChart, IN UINT16 ParentPort, IN USB_DEV_ROUTE RouteChart, IN UINT8 DeviceSpeed)

EFI_STATUS	XhcPeiDisableSlotCmd (IN PEI_XHC_DEV *Xhc, IN UINT8 SlotId)

EFI_STATUS	XhcPeiDisableSlotCmd64 (IN PEI_XHC_DEV *Xhc, IN UINT8 SlotId)

EFI_STATUS	XhcPeiSetConfigCmd (IN PEI_XHC_DEV Xhc, IN UINT8 SlotId, IN UINT8 DeviceSpeed, IN USB_CONFIG_DESCRIPTOR ConfigDesc)

EFI_STATUS	XhcPeiSetConfigCmd64 (IN PEI_XHC_DEV Xhc, IN UINT8 SlotId, IN UINT8 DeviceSpeed, IN USB_CONFIG_DESCRIPTOR ConfigDesc)

EFI_STATUS	XhcPeiEvaluateContext (IN PEI_XHC_DEV *Xhc, IN UINT8 SlotId, IN UINT32 MaxPacketSize)

EFI_STATUS	XhcPeiEvaluateContext64 (IN PEI_XHC_DEV *Xhc, IN UINT8 SlotId, IN UINT32 MaxPacketSize)

EFI_STATUS	XhcPeiConfigHubContext (IN PEI_XHC_DEV *Xhc, IN UINT8 SlotId, IN UINT8 PortNum, IN UINT8 TTT, IN UINT8 MTT)

EFI_STATUS	XhcPeiConfigHubContext64 (IN PEI_XHC_DEV *Xhc, IN UINT8 SlotId, IN UINT8 PortNum, IN UINT8 TTT, IN UINT8 MTT)

EFI_STATUS EFIAPI	XhcPeiStopEndpoint (IN PEI_XHC_DEV *Xhc, IN UINT8 SlotId, IN UINT8 Dci)

EFI_STATUS EFIAPI	XhcPeiResetEndpoint (IN PEI_XHC_DEV *Xhc, IN UINT8 SlotId, IN UINT8 Dci)

EFI_STATUS EFIAPI	XhcPeiSetTrDequeuePointer (IN PEI_XHC_DEV Xhc, IN UINT8 SlotId, IN UINT8 Dci, IN URB Urb)

EFI_STATUS	XhcPeiCheckNewEvent (IN PEI_XHC_DEV Xhc, IN EVENT_RING EvtRing, OUT TRB_TEMPLATE **NewEvtTrb)

EFI_STATUS	XhcPeiSyncEventRing (IN PEI_XHC_DEV Xhc, IN EVENT_RING EvtRing)

VOID	XhcPeiFreeEventRing (IN PEI_XHC_DEV Xhc, IN EVENT_RING EventRing)

VOID	XhcPeiCreateEventRing (IN PEI_XHC_DEV Xhc, OUT EVENT_RING EventRing)

EFI_STATUS	XhcPeiSyncTrsRing (IN PEI_XHC_DEV Xhc, IN TRANSFER_RING TrsRing)

VOID	XhcPeiCreateTransferRing (IN PEI_XHC_DEV Xhc, IN UINTN TrbNum, OUT TRANSFER_RING TransferRing)

VOID	XhcPeiInitSched (IN PEI_XHC_DEV *Xhc)

VOID	XhcPeiFreeSched (IN PEI_XHC_DEV *Xhc)

Detailed Description

PEIM to produce gPeiUsb2HostControllerPpiGuid based on gPeiUsbControllerPpiGuid which is used to enable recovery function from USB Drivers.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file XhciSched.c.

Function Documentation

◆ XhcPeiBusDevAddrToSlotId()

UINT8 XhcPeiBusDevAddrToSlotId	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	BusDevAddr
	)

Find out the actual device address according to the requested device address from UsbBus.

Parameters

Xhc	The XHCI device.
BusDevAddr	The requested device address by UsbBus upper driver.

Returns: The actual device address assigned to the device.

Definition at line 979 of file XhciSched.c.

◆ XhcPeiCheckNewEvent()

EFI_STATUS XhcPeiCheckNewEvent	(	IN PEI_XHC_DEV *	Xhc,
		IN EVENT_RING *	EvtRing,
		OUT TRB_TEMPLATE **	NewEvtTrb
	)

Check if there is a new generated event.

Parameters

Xhc	The XHCI device.
EvtRing	The event ring to check.
NewEvtTrb	The new event TRB found.

Return values

EFI_SUCCESS	Found a new event TRB at the event ring.
EFI_NOT_READY	The event ring has no new event.

Definition at line 2561 of file XhciSched.c.

◆ XhcPeiCheckUrbResult()

BOOLEAN XhcPeiCheckUrbResult	(	IN PEI_XHC_DEV *	Xhc,
		IN URB *	Urb
	)

Check the URB's execution result and update the URB's result accordingly.

Parameters

Xhc	The XHCI device.
Urb	The URB to check result.

Returns: Whether the result of URB transfer is finialized.

Definition at line 623 of file XhciSched.c.

◆ XhcPeiCmdTransfer()

EFI_STATUS XhcPeiCmdTransfer	(	IN PEI_XHC_DEV *	Xhc,
		IN TRB_TEMPLATE *	CmdTrb,
		IN UINTN	Timeout,
		OUT TRB_TEMPLATE **	EvtTrb
	)

Execute a XHCI cmd TRB pointed by CmdTrb.

Parameters

Xhc	The XHCI device.
CmdTrb	The cmd TRB to be executed.
Timeout	Indicates the maximum time, in millisecond, which the transfer is allowed to complete.
EvtTrb	The event TRB corresponding to the cmd TRB.

Return values

EFI_SUCCESS	The transfer was completed successfully.
EFI_INVALID_PARAMETER	Some parameters are invalid.
EFI_TIMEOUT	The transfer failed due to timeout.
EFI_DEVICE_ERROR	The transfer failed due to host controller error.

Definition at line 65 of file XhciSched.c.

◆ XhcPeiConfigHubContext()

EFI_STATUS XhcPeiConfigHubContext	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId,
		IN UINT8	PortNum,
		IN UINT8	TTT,
		IN UINT8	MTT
	)

Evaluate the slot context for hub device through XHCI's Configure_Endpoint cmd.

Parameters

Xhc	The XHCI device.
SlotId	The slot id to be configured.
PortNum	The total number of downstream port supported by the hub.
TTT	The TT think time of the hub device.
MTT	The multi-TT of the hub device.

Return values

EFI_SUCCESS Successfully configure the hub device's slot context.

Definition at line 2279 of file XhciSched.c.

◆ XhcPeiConfigHubContext64()

EFI_STATUS XhcPeiConfigHubContext64	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId,
		IN UINT8	PortNum,
		IN UINT8	TTT,
		IN UINT8	MTT
	)

Evaluate the slot context for hub device through XHCI's Configure_Endpoint cmd.

Parameters

Xhc	The XHCI device.
SlotId	The slot id to be configured.
PortNum	The total number of downstream port supported by the hub.
TTT	The TT think time of the hub device.
MTT	The multi-TT of the hub device.

Return values

EFI_SUCCESS Successfully configure the hub device's slot context.

Definition at line 2348 of file XhciSched.c.

◆ XhcPeiCreateCmdTrb()

URB * XhcPeiCreateCmdTrb	(	IN PEI_XHC_DEV *	Xhc,
		IN TRB_TEMPLATE *	CmdTrb
	)

Create a command transfer TRB to support XHCI command interfaces.

Parameters

Xhc	The XHCI device.
CmdTrb	The cmd TRB to be executed.

Returns: Created URB or NULL.

Definition at line 24 of file XhciSched.c.

◆ XhcPeiCreateEventRing()

VOID XhcPeiCreateEventRing	(	IN PEI_XHC_DEV *	Xhc,
		OUT EVENT_RING *	EventRing
	)

Create XHCI event ring.

Parameters

Xhc	The XHCI device.
EventRing	The created event ring.

Definition at line 2670 of file XhciSched.c.

◆ XhcPeiCreateTransferRing()

VOID XhcPeiCreateTransferRing	(	IN PEI_XHC_DEV *	Xhc,
		IN UINTN	TrbNum,
		OUT TRANSFER_RING *	TransferRing
	)

Create XHCI transfer ring.

Parameters

Xhc	The XHCI Device.
TrbNum	The number of TRB in the ring.
TransferRing	The created transfer ring.

Definition at line 2835 of file XhciSched.c.

◆ XhcPeiCreateTransferTrb()

EFI_STATUS XhcPeiCreateTransferTrb	(	IN PEI_XHC_DEV *	Xhc,
		IN URB *	Urb
	)

Create a transfer TRB.

Parameters

Xhc	The XHCI device
Urb	The urb used to construct the transfer TRB.

Returns: Created TRB or NULL

Definition at line 212 of file XhciSched.c.

◆ XhcPeiCreateUrb()

URB * XhcPeiCreateUrb	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	BusAddr,
		IN UINT8	EpAddr,
		IN UINT8	DevSpeed,
		IN UINTN	MaxPacket,
		IN UINTN	Type,
		IN EFI_USB_DEVICE_REQUEST *	Request,
		IN VOID *	Data,
		IN UINTN	DataLen,
		IN EFI_ASYNC_USB_TRANSFER_CALLBACK	Callback,
		IN VOID *	Context
	)

Create a new URB for a new transaction.

Parameters

Xhc	The XHCI device
BusAddr	The logical device address assigned by UsbBus driver
EpAddr	Endpoint addrress
DevSpeed	The device speed
MaxPacket	The max packet length of the endpoint
Type	The transaction type
Request	The standard USB request for control transfer
Data	The user data to transfer
DataLen	The length of data buffer
Callback	The function to call when data is transferred
Context	The context to the callback

Returns: Created URB or NULL

Definition at line 131 of file XhciSched.c.

◆ XhcPeiDequeueTrbFromEndpoint()

EFI_STATUS XhcPeiDequeueTrbFromEndpoint	(	IN PEI_XHC_DEV *	Xhc,
		IN URB *	Urb
	)

System software shall use a Stop Endpoint Command (section 4.6.9) and the Set TR Dequeue Pointer Command (section 4.6.10) to remove the timed-out TDs from the xHC transfer ring. The next write to the Doorbell of the Endpoint will transition the Endpoint Context from the Stopped to the Running state.

Parameters

Xhc	The XHCI device.
Urb	The urb which doesn't get completed in a specified timeout range.

Return values

EFI_SUCCESS	The dequeuing of the TDs is successful.
Others	Failed to stop the endpoint and dequeue the TDs.

Definition at line 532 of file XhciSched.c.

◆ XhcPeiDisableSlotCmd()

EFI_STATUS XhcPeiDisableSlotCmd	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId
	)

Disable the specified device slot.

Parameters

Xhc	The XHCI device.
SlotId	The slot id to be disabled.

Return values

EFI_SUCCESS Successfully disable the device slot.

Definition at line 1497 of file XhciSched.c.

◆ XhcPeiDisableSlotCmd64()

EFI_STATUS XhcPeiDisableSlotCmd64	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId
	)

Disable the specified device slot.

Parameters

Xhc	The XHCI device.
SlotId	The slot id to be disabled.

Return values

EFI_SUCCESS Successfully disable the device slot.

Definition at line 1604 of file XhciSched.c.

◆ XhcPeiEndpointToDci()

UINT8 XhcPeiEndpointToDci	(	IN UINT8	EpAddr,
		IN EFI_USB_DATA_DIRECTION	Direction
	)

Calculate the device context index by endpoint address and direction.

Parameters

EpAddr	The target endpoint number.
Direction	The direction of the target endpoint.

Returns: The device context index of endpoint.

Definition at line 948 of file XhciSched.c.

◆ XhcPeiEvaluateContext()

EFI_STATUS XhcPeiEvaluateContext	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId,
		IN UINT32	MaxPacketSize
	)

Evaluate the endpoint 0 context through XHCI's Evaluate_Context cmd.

Parameters

Xhc	The XHCI device.
SlotId	The slot id to be evaluated.
MaxPacketSize	The max packet size supported by the device control transfer.

Return values

EFI_SUCCESS Successfully evaluate the device endpoint 0.

Definition at line 2167 of file XhciSched.c.

◆ XhcPeiEvaluateContext64()

EFI_STATUS XhcPeiEvaluateContext64	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId,
		IN UINT32	MaxPacketSize
	)

Evaluate the endpoint 0 context through XHCI's Evaluate_Context cmd.

Parameters

Xhc	The XHCI device.
SlotId	The slot id to be evaluated.
MaxPacketSize	The max packet size supported by the device control transfer.

Return values

EFI_SUCCESS Successfully evaluate the device endpoint 0.

Definition at line 2222 of file XhciSched.c.

◆ XhcPeiExecTransfer()

EFI_STATUS XhcPeiExecTransfer	(	IN PEI_XHC_DEV *	Xhc,
		IN BOOLEAN	CmdTransfer,
		IN URB *	Urb,
		IN UINTN	Timeout
	)

Execute the transfer by polling the URB. This is a synchronous operation.

Parameters

Xhc	The XHCI device.
CmdTransfer	The executed URB is for cmd transfer or not.
Urb	The URB to execute.
Timeout	The time to wait before abort, in millisecond.

Returns: EFI_DEVICE_ERROR The transfer failed due to transfer error.; EFI_TIMEOUT The transfer failed due to time out.; EFI_SUCCESS The transfer finished OK.

Definition at line 797 of file XhciSched.c.

◆ XhcPeiFreeEventRing()

VOID XhcPeiFreeEventRing	(	IN PEI_XHC_DEV *	Xhc,
		IN EVENT_RING *	EventRing
	)

Free XHCI event ring.

Parameters

Xhc	The XHCI device.
EventRing	The event ring to be freed.

Definition at line 2642 of file XhciSched.c.

◆ XhcPeiFreeSched()

VOID XhcPeiFreeSched ( IN PEI_XHC_DEV * Xhc )

Free the resouce allocated at initializing schedule.

Parameters

Xhc	The XHCI device.

Definition at line 3049 of file XhciSched.c.

◆ XhcPeiFreeUrb()

VOID XhcPeiFreeUrb	(	IN PEI_XHC_DEV *	Xhc,
		IN URB *	Urb
	)

Free an allocated URB.

Parameters

Xhc	The XHCI device.
Urb	The URB to free.

Definition at line 188 of file XhciSched.c.

◆ XhcPeiInitializeDeviceSlot()

EFI_STATUS XhcPeiInitializeDeviceSlot	(	IN PEI_XHC_DEV *	Xhc,
		IN USB_DEV_ROUTE	ParentRouteChart,
		IN UINT16	ParentPort,
		IN USB_DEV_ROUTE	RouteChart,
		IN UINT8	DeviceSpeed
	)

Assign and initialize the device slot for a new device.

Parameters

Xhc	The XHCI device.
ParentRouteChart	The route string pointed to the parent device.
ParentPort	The port at which the device is located.
RouteChart	The route string pointed to the device.
DeviceSpeed	The device speed.

Return values

EFI_SUCCESS	Successfully assign a slot to the device and assign an address to it.
Others	Fail to initialize device slot.

Definition at line 1071 of file XhciSched.c.

◆ XhcPeiInitializeDeviceSlot64()

EFI_STATUS XhcPeiInitializeDeviceSlot64	(	IN PEI_XHC_DEV *	Xhc,
		IN USB_DEV_ROUTE	ParentRouteChart,
		IN UINT16	ParentPort,
		IN USB_DEV_ROUTE	RouteChart,
		IN UINT8	DeviceSpeed
	)

Assign and initialize the device slot for a new device.

Parameters

Xhc	The XHCI device.
ParentRouteChart	The route string pointed to the parent device.
ParentPort	The port at which the device is located.
RouteChart	The route string pointed to the device.
DeviceSpeed	The device speed.

Return values

EFI_SUCCESS	Successfully assign a slot to the device and assign an address to it.
Others	Fail to initialize device slot.

Definition at line 1286 of file XhciSched.c.

◆ XhcPeiInitSched()

VOID XhcPeiInitSched ( IN PEI_XHC_DEV * Xhc )

Initialize the XHCI host controller for schedule.

Parameters

Xhc	The XHCI device to be initialized.

Definition at line 2882 of file XhciSched.c.

◆ XhcPeiIsTransferRingTrb()

BOOLEAN XhcPeiIsTransferRingTrb	(	IN TRB_TEMPLATE *	Trb,
		IN URB *	Urb
	)

Check if the Trb is a transaction of the URB.

Parameters

Trb	The TRB to be checked
Urb	The transfer ring to be checked.

Return values

TRUE	It is a transaction of the URB.
FALSE	It is not any transaction of the URB.

Definition at line 589 of file XhciSched.c.

◆ XhcPeiPollPortStatusChange()

EFI_STATUS XhcPeiPollPortStatusChange	(	IN PEI_XHC_DEV *	Xhc,
		IN USB_DEV_ROUTE	ParentRouteChart,
		IN UINT8	Port,
		IN EFI_USB_PORT_STATUS *	PortState
	)

Monitor the port status change. Enable/Disable device slot if there is a device attached/detached.

Parameters

Xhc	The XHCI device.
ParentRouteChart	The route string pointed to the parent device if it exists.
Port	The port to be polled.
PortState	The port state.

Return values

EFI_SUCCESS	Successfully enable/disable device slot according to port state.
Others	Should not appear.

Definition at line 863 of file XhciSched.c.

◆ XhcPeiRecoverHaltedEndpoint()

EFI_STATUS XhcPeiRecoverHaltedEndpoint	(	IN PEI_XHC_DEV *	Xhc,
		IN URB *	Urb
	)

System software shall use a Reset Endpoint Command (section 4.11.4.7) to remove the Halted condition in the xHC. After the successful completion of the Reset Endpoint Command, the Endpoint Context is transitioned from the Halted to the Stopped state and the Transfer Ring of the endpoint is reenabled. The next write to the Doorbell of the Endpoint will transition the Endpoint Context from the Stopped to the Running state.

Parameters

Xhc	The XHCI device.
Urb	The urb which makes the endpoint halted.

Return values

EFI_SUCCESS	The recovery is successful.
Others	Failed to recovery halted endpoint.

Definition at line 472 of file XhciSched.c.

◆ XhcPeiResetEndpoint()

EFI_STATUS EFIAPI XhcPeiResetEndpoint	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId,
		IN UINT8	Dci
	)

Reset endpoint through XHCI's Reset_Endpoint cmd.

Parameters

Xhc	The XHCI device.
SlotId	The slot id of the target device.
Dci	The device context index of the target slot or endpoint.

Return values

EFI_SUCCESS	Reset endpoint successfully.
Others	Failed to reset endpoint.

Definition at line 2463 of file XhciSched.c.

◆ XhcPeiRingDoorBell()

VOID XhcPeiRingDoorBell	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId,
		IN UINT8	Dci
	)

Ring the door bell to notify XHCI there is a transaction to be executed.

Parameters

Xhc	The XHCI device.
SlotId	The slot id of the target device.
Dci	The device context index of the target slot or endpoint.

Definition at line 1044 of file XhciSched.c.

◆ XhcPeiRouteStringToSlotId()

UINT8 XhcPeiRouteStringToSlotId	(	IN PEI_XHC_DEV *	Xhc,
		IN USB_DEV_ROUTE	RouteString
	)

Find out the slot id according to the device's route string.

Parameters

Xhc	The XHCI device.
RouteString	The route string described the device location.

Returns: The slot id used by the device.

Definition at line 1012 of file XhciSched.c.

◆ XhcPeiSetConfigCmd()

EFI_STATUS XhcPeiSetConfigCmd	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId,
		IN UINT8	DeviceSpeed,
		IN USB_CONFIG_DESCRIPTOR *	ConfigDesc
	)

Configure all the device endpoints through XHCI's Configure_Endpoint cmd.

Parameters

Xhc	The XHCI device.
SlotId	The slot id to be configured.
DeviceSpeed	The device's speed.
ConfigDesc	The pointer to the usb device configuration descriptor.

Return values

EFI_SUCCESS Successfully configure all the device endpoints.

Definition at line 1713 of file XhciSched.c.

◆ XhcPeiSetConfigCmd64()

EFI_STATUS XhcPeiSetConfigCmd64	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId,
		IN UINT8	DeviceSpeed,
		IN USB_CONFIG_DESCRIPTOR *	ConfigDesc
	)

Configure all the device endpoints through XHCI's Configure_Endpoint cmd.

Parameters

Xhc	The XHCI device.
SlotId	The slot id to be configured.
DeviceSpeed	The device's speed.
ConfigDesc	The pointer to the usb device configuration descriptor.

Return values

EFI_SUCCESS Successfully configure all the device endpoints.

Definition at line 1939 of file XhciSched.c.

◆ XhcPeiSetTrDequeuePointer()

EFI_STATUS EFIAPI XhcPeiSetTrDequeuePointer	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId,
		IN UINT8	Dci,
		IN URB *	Urb
	)

Set transfer ring dequeue pointer through XHCI's Set_Tr_Dequeue_Pointer cmd.

Parameters

Xhc	The XHCI device.
SlotId	The slot id of the target device.
Dci	The device context index of the target slot or endpoint.
Urb	The dequeue pointer of the transfer ring specified by the urb to be updated.

Return values

EFI_SUCCESS	Set transfer ring dequeue pointer succeeds.
Others	Failed to set transfer ring dequeue pointer.

Definition at line 2511 of file XhciSched.c.

◆ XhcPeiStopEndpoint()

EFI_STATUS EFIAPI XhcPeiStopEndpoint	(	IN PEI_XHC_DEV *	Xhc,
		IN UINT8	SlotId,
		IN UINT8	Dci
	)

Stop endpoint through XHCI's Stop_Endpoint cmd.

Parameters

Xhc	The XHCI device.
SlotId	The slot id of the target device.
Dci	The device context index of the target slot or endpoint.

Return values

EFI_SUCCESS	Stop endpoint successfully.
Others	Failed to stop endpoint.

Definition at line 2417 of file XhciSched.c.

◆ XhcPeiSyncEventRing()

EFI_STATUS XhcPeiSyncEventRing	(	IN PEI_XHC_DEV *	Xhc,
		IN EVENT_RING *	EvtRing
	)

Synchronize the specified event ring to update the enqueue and dequeue pointer.

Parameters

Xhc	The XHCI device.
EvtRing	The event ring to sync.

Return values

EFI_SUCCESS The event ring is synchronized successfully.

Definition at line 2596 of file XhciSched.c.

◆ XhcPeiSyncTrsRing()

EFI_STATUS XhcPeiSyncTrsRing	(	IN PEI_XHC_DEV *	Xhc,
		IN TRANSFER_RING *	TrsRing
	)

Synchronize the specified transfer ring to update the enqueue and dequeue pointer.

Parameters

Xhc	The XHCI device.
TrsRing	The transfer ring to sync.

Return values

EFI_SUCCESS The transfer ring is synchronized successfully.

Definition at line 2772 of file XhciSched.c.

Functions

Detailed Description

Function Documentation

◆ XhcPeiBusDevAddrToSlotId()

◆ XhcPeiCheckNewEvent()

◆ XhcPeiCheckUrbResult()

◆ XhcPeiCmdTransfer()

◆ XhcPeiConfigHubContext()

◆ XhcPeiConfigHubContext64()

◆ XhcPeiCreateCmdTrb()

◆ XhcPeiCreateEventRing()

◆ XhcPeiCreateTransferRing()

◆ XhcPeiCreateTransferTrb()

◆ XhcPeiCreateUrb()

◆ XhcPeiDequeueTrbFromEndpoint()

◆ XhcPeiDisableSlotCmd()

◆ XhcPeiDisableSlotCmd64()

◆ XhcPeiEndpointToDci()

◆ XhcPeiEvaluateContext()

◆ XhcPeiEvaluateContext64()

◆ XhcPeiExecTransfer()

◆ XhcPeiFreeEventRing()

◆ XhcPeiFreeSched()

◆ XhcPeiFreeUrb()

◆ XhcPeiInitializeDeviceSlot()

◆ XhcPeiInitializeDeviceSlot64()

◆ XhcPeiInitSched()

◆ XhcPeiIsTransferRingTrb()

◆ XhcPeiPollPortStatusChange()

◆ XhcPeiRecoverHaltedEndpoint()

◆ XhcPeiResetEndpoint()

◆ XhcPeiRingDoorBell()

◆ XhcPeiRouteStringToSlotId()

◆ XhcPeiSetConfigCmd()

◆ XhcPeiSetConfigCmd64()

◆ XhcPeiSetTrDequeuePointer()

◆ XhcPeiStopEndpoint()

◆ XhcPeiSyncEventRing()

◆ XhcPeiSyncTrsRing()