2 The XHCI controller driver.
4 Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 // Two arrays used to translate the XHCI port state (change)
19 // to the UEFI protocol's port state (change).
21 USB_PORT_STATE_MAP mUsbPortStateMap
[] = {
22 {XHC_PORTSC_CCS
, USB_PORT_STAT_CONNECTION
},
23 {XHC_PORTSC_PED
, USB_PORT_STAT_ENABLE
},
24 {XHC_PORTSC_OCA
, USB_PORT_STAT_OVERCURRENT
},
25 {XHC_PORTSC_RESET
, USB_PORT_STAT_RESET
}
28 USB_PORT_STATE_MAP mUsbPortChangeMap
[] = {
29 {XHC_PORTSC_CSC
, USB_PORT_STAT_C_CONNECTION
},
30 {XHC_PORTSC_PEC
, USB_PORT_STAT_C_ENABLE
},
31 {XHC_PORTSC_OCC
, USB_PORT_STAT_C_OVERCURRENT
},
32 {XHC_PORTSC_PRC
, USB_PORT_STAT_C_RESET
}
35 USB_CLEAR_PORT_MAP mUsbClearPortChangeMap
[] = {
36 {XHC_PORTSC_CSC
, EfiUsbPortConnectChange
},
37 {XHC_PORTSC_PEC
, EfiUsbPortEnableChange
},
38 {XHC_PORTSC_OCC
, EfiUsbPortOverCurrentChange
},
39 {XHC_PORTSC_PRC
, EfiUsbPortResetChange
}
42 USB_PORT_STATE_MAP mUsbHubPortStateMap
[] = {
43 {XHC_HUB_PORTSC_CCS
, USB_PORT_STAT_CONNECTION
},
44 {XHC_HUB_PORTSC_PED
, USB_PORT_STAT_ENABLE
},
45 {XHC_HUB_PORTSC_OCA
, USB_PORT_STAT_OVERCURRENT
},
46 {XHC_HUB_PORTSC_RESET
, USB_PORT_STAT_RESET
}
49 USB_PORT_STATE_MAP mUsbHubPortChangeMap
[] = {
50 {XHC_HUB_PORTSC_CSC
, USB_PORT_STAT_C_CONNECTION
},
51 {XHC_HUB_PORTSC_PEC
, USB_PORT_STAT_C_ENABLE
},
52 {XHC_HUB_PORTSC_OCC
, USB_PORT_STAT_C_OVERCURRENT
},
53 {XHC_HUB_PORTSC_PRC
, USB_PORT_STAT_C_RESET
}
56 USB_CLEAR_PORT_MAP mUsbHubClearPortChangeMap
[] = {
57 {XHC_HUB_PORTSC_CSC
, EfiUsbPortConnectChange
},
58 {XHC_HUB_PORTSC_PEC
, EfiUsbPortEnableChange
},
59 {XHC_HUB_PORTSC_OCC
, EfiUsbPortOverCurrentChange
},
60 {XHC_HUB_PORTSC_PRC
, EfiUsbPortResetChange
},
61 {XHC_HUB_PORTSC_BHRC
, Usb3PortBHPortResetChange
}
64 EFI_DRIVER_BINDING_PROTOCOL gXhciDriverBinding
= {
65 XhcDriverBindingSupported
,
66 XhcDriverBindingStart
,
74 // Template for Xhci's Usb2 Host Controller Protocol Instance.
76 EFI_USB2_HC_PROTOCOL gXhciUsb2HcTemplate
= {
83 XhcAsyncInterruptTransfer
,
84 XhcSyncInterruptTransfer
,
85 XhcIsochronousTransfer
,
86 XhcAsyncIsochronousTransfer
,
87 XhcGetRootHubPortStatus
,
88 XhcSetRootHubPortFeature
,
89 XhcClearRootHubPortFeature
,
95 Retrieves the capability of root hub ports.
97 @param This The EFI_USB2_HC_PROTOCOL instance.
98 @param MaxSpeed Max speed supported by the controller.
99 @param PortNumber Number of the root hub ports.
100 @param Is64BitCapable Whether the controller supports 64-bit memory
103 @retval EFI_SUCCESS Host controller capability were retrieved successfully.
104 @retval EFI_INVALID_PARAMETER Either of the three capability pointer is NULL.
110 IN EFI_USB2_HC_PROTOCOL
*This
,
112 OUT UINT8
*PortNumber
,
113 OUT UINT8
*Is64BitCapable
116 USB_XHCI_INSTANCE
*Xhc
;
119 if ((MaxSpeed
== NULL
) || (PortNumber
== NULL
) || (Is64BitCapable
== NULL
)) {
120 return EFI_INVALID_PARAMETER
;
123 OldTpl
= gBS
->RaiseTPL (XHC_TPL
);
125 Xhc
= XHC_FROM_THIS (This
);
126 *MaxSpeed
= EFI_USB_SPEED_SUPER
;
127 *PortNumber
= (UINT8
) (Xhc
->HcSParams1
.Data
.MaxPorts
);
128 *Is64BitCapable
= (UINT8
) (Xhc
->HcCParams
.Data
.Ac64
);
129 DEBUG ((EFI_D_INFO
, "XhcGetCapability: %d ports, 64 bit %d\n", *PortNumber
, *Is64BitCapable
));
131 gBS
->RestoreTPL (OldTpl
);
138 Provides software reset for the USB host controller.
140 @param This This EFI_USB2_HC_PROTOCOL instance.
141 @param Attributes A bit mask of the reset operation to perform.
143 @retval EFI_SUCCESS The reset operation succeeded.
144 @retval EFI_INVALID_PARAMETER Attributes is not valid.
145 @retval EFI_UNSUPPOURTED The type of reset specified by Attributes is
146 not currently supported by the host controller.
147 @retval EFI_DEVICE_ERROR Host controller isn't halted to reset.
153 IN EFI_USB2_HC_PROTOCOL
*This
,
157 USB_XHCI_INSTANCE
*Xhc
;
161 Xhc
= XHC_FROM_THIS (This
);
163 if (Xhc
->DevicePath
!= NULL
) {
165 // Report Status Code to indicate reset happens
167 REPORT_STATUS_CODE_WITH_DEVICE_PATH (
169 (EFI_IO_BUS_USB
| EFI_IOB_PC_RESET
),
174 OldTpl
= gBS
->RaiseTPL (XHC_TPL
);
176 switch (Attributes
) {
177 case EFI_USB_HC_RESET_GLOBAL
:
179 // Flow through, same behavior as Host Controller Reset
181 case EFI_USB_HC_RESET_HOST_CONTROLLER
:
182 if ((Xhc
->DebugCapSupOffset
!= 0xFFFFFFFF) && ((XhcReadExtCapReg (Xhc
, Xhc
->DebugCapSupOffset
) & 0xFF) == XHC_CAP_USB_DEBUG
) &&
183 ((XhcReadExtCapReg (Xhc
, Xhc
->DebugCapSupOffset
+ XHC_DC_DCCTRL
) & BIT0
) != 0)) {
184 Status
= EFI_SUCCESS
;
188 // Host Controller must be Halt when Reset it
190 if (!XhcIsHalt (Xhc
)) {
191 Status
= XhcHaltHC (Xhc
, XHC_GENERIC_TIMEOUT
);
193 if (EFI_ERROR (Status
)) {
194 Status
= EFI_DEVICE_ERROR
;
199 Status
= XhcResetHC (Xhc
, XHC_RESET_TIMEOUT
);
200 ASSERT (!(XHC_REG_BIT_IS_SET (Xhc
, XHC_USBSTS_OFFSET
, XHC_USBSTS_CNR
)));
202 if (EFI_ERROR (Status
)) {
206 // Clean up the asynchronous transfers, currently only
207 // interrupt supports asynchronous operation.
209 XhciDelAllAsyncIntTransfers (Xhc
);
215 case EFI_USB_HC_RESET_GLOBAL_WITH_DEBUG
:
216 case EFI_USB_HC_RESET_HOST_WITH_DEBUG
:
217 Status
= EFI_UNSUPPORTED
;
221 Status
= EFI_INVALID_PARAMETER
;
225 DEBUG ((EFI_D_INFO
, "XhcReset: status %r\n", Status
));
226 gBS
->RestoreTPL (OldTpl
);
233 Retrieve the current state of the USB host controller.
235 @param This This EFI_USB2_HC_PROTOCOL instance.
236 @param State Variable to return the current host controller
239 @retval EFI_SUCCESS Host controller state was returned in State.
240 @retval EFI_INVALID_PARAMETER State is NULL.
241 @retval EFI_DEVICE_ERROR An error was encountered while attempting to
242 retrieve the host controller's current state.
248 IN EFI_USB2_HC_PROTOCOL
*This
,
249 OUT EFI_USB_HC_STATE
*State
252 USB_XHCI_INSTANCE
*Xhc
;
256 return EFI_INVALID_PARAMETER
;
259 OldTpl
= gBS
->RaiseTPL (XHC_TPL
);
261 Xhc
= XHC_FROM_THIS (This
);
263 if (XHC_REG_BIT_IS_SET (Xhc
, XHC_USBSTS_OFFSET
, XHC_USBSTS_HALT
)) {
264 *State
= EfiUsbHcStateHalt
;
266 *State
= EfiUsbHcStateOperational
;
269 DEBUG ((EFI_D_INFO
, "XhcGetState: current state %d\n", *State
));
270 gBS
->RestoreTPL (OldTpl
);
276 Sets the USB host controller to a specific state.
278 @param This This EFI_USB2_HC_PROTOCOL instance.
279 @param State The state of the host controller that will be set.
281 @retval EFI_SUCCESS The USB host controller was successfully placed
282 in the state specified by State.
283 @retval EFI_INVALID_PARAMETER State is invalid.
284 @retval EFI_DEVICE_ERROR Failed to set the state due to device error.
290 IN EFI_USB2_HC_PROTOCOL
*This
,
291 IN EFI_USB_HC_STATE State
294 USB_XHCI_INSTANCE
*Xhc
;
296 EFI_USB_HC_STATE CurState
;
299 Status
= XhcGetState (This
, &CurState
);
301 if (EFI_ERROR (Status
)) {
302 return EFI_DEVICE_ERROR
;
305 if (CurState
== State
) {
309 OldTpl
= gBS
->RaiseTPL (XHC_TPL
);
311 Xhc
= XHC_FROM_THIS (This
);
314 case EfiUsbHcStateHalt
:
315 Status
= XhcHaltHC (Xhc
, XHC_GENERIC_TIMEOUT
);
318 case EfiUsbHcStateOperational
:
319 if (XHC_REG_BIT_IS_SET (Xhc
, XHC_USBSTS_OFFSET
, XHC_USBSTS_HSE
)) {
320 Status
= EFI_DEVICE_ERROR
;
325 // Software must not write a one to this field unless the host controller
326 // is in the Halted state. Doing so will yield undefined results.
327 // refers to Spec[XHCI1.0-2.3.1]
329 if (!XHC_REG_BIT_IS_SET (Xhc
, XHC_USBSTS_OFFSET
, XHC_USBSTS_HALT
)) {
330 Status
= EFI_DEVICE_ERROR
;
334 Status
= XhcRunHC (Xhc
, XHC_GENERIC_TIMEOUT
);
337 case EfiUsbHcStateSuspend
:
338 Status
= EFI_UNSUPPORTED
;
342 Status
= EFI_INVALID_PARAMETER
;
345 DEBUG ((EFI_D_INFO
, "XhcSetState: status %r\n", Status
));
346 gBS
->RestoreTPL (OldTpl
);
352 Retrieves the current status of a USB root hub port.
354 @param This This EFI_USB2_HC_PROTOCOL instance.
355 @param PortNumber The root hub port to retrieve the state from.
356 This value is zero-based.
357 @param PortStatus Variable to receive the port state.
359 @retval EFI_SUCCESS The status of the USB root hub port specified.
360 by PortNumber was returned in PortStatus.
361 @retval EFI_INVALID_PARAMETER PortNumber is invalid.
362 @retval EFI_DEVICE_ERROR Can't read register.
367 XhcGetRootHubPortStatus (
368 IN EFI_USB2_HC_PROTOCOL
*This
,
370 OUT EFI_USB_PORT_STATUS
*PortStatus
373 USB_XHCI_INSTANCE
*Xhc
;
380 USB_DEV_ROUTE ParentRouteChart
;
383 if (PortStatus
== NULL
) {
384 return EFI_INVALID_PARAMETER
;
387 OldTpl
= gBS
->RaiseTPL (XHC_TPL
);
389 Xhc
= XHC_FROM_THIS (This
);
390 Status
= EFI_SUCCESS
;
392 TotalPort
= Xhc
->HcSParams1
.Data
.MaxPorts
;
394 if (PortNumber
>= TotalPort
) {
395 Status
= EFI_INVALID_PARAMETER
;
399 Offset
= (UINT32
) (XHC_PORTSC_OFFSET
+ (0x10 * PortNumber
));
400 PortStatus
->PortStatus
= 0;
401 PortStatus
->PortChangeStatus
= 0;
403 State
= XhcReadOpReg (Xhc
, Offset
);
406 // According to XHCI 1.0 spec, bit 10~13 of the root port status register identifies the speed of the attached device.
408 switch ((State
& XHC_PORTSC_PS
) >> 10) {
410 PortStatus
->PortStatus
|= USB_PORT_STAT_LOW_SPEED
;
414 PortStatus
->PortStatus
|= USB_PORT_STAT_HIGH_SPEED
;
418 PortStatus
->PortStatus
|= USB_PORT_STAT_SUPER_SPEED
;
426 // Convert the XHCI port/port change state to UEFI status
428 MapSize
= sizeof (mUsbPortStateMap
) / sizeof (USB_PORT_STATE_MAP
);
430 for (Index
= 0; Index
< MapSize
; Index
++) {
431 if (XHC_BIT_IS_SET (State
, mUsbPortStateMap
[Index
].HwState
)) {
432 PortStatus
->PortStatus
= (UINT16
) (PortStatus
->PortStatus
| mUsbPortStateMap
[Index
].UefiState
);
436 // Bit5~8 reflects its current link state.
438 if ((State
& XHC_PORTSC_PLS
) >> 5 == 3) {
439 PortStatus
->PortStatus
|= USB_PORT_STAT_SUSPEND
;
442 MapSize
= sizeof (mUsbPortChangeMap
) / sizeof (USB_PORT_STATE_MAP
);
444 for (Index
= 0; Index
< MapSize
; Index
++) {
445 if (XHC_BIT_IS_SET (State
, mUsbPortChangeMap
[Index
].HwState
)) {
446 PortStatus
->PortChangeStatus
= (UINT16
) (PortStatus
->PortChangeStatus
| mUsbPortChangeMap
[Index
].UefiState
);
450 MapSize
= sizeof (mUsbClearPortChangeMap
) / sizeof (USB_CLEAR_PORT_MAP
);
452 for (Index
= 0; Index
< MapSize
; Index
++) {
453 if (XHC_BIT_IS_SET (State
, mUsbClearPortChangeMap
[Index
].HwState
)) {
454 XhcClearRootHubPortFeature (This
, PortNumber
, (EFI_USB_PORT_FEATURE
)mUsbClearPortChangeMap
[Index
].Selector
);
459 // Poll the root port status register to enable/disable corresponding device slot if there is a device attached/detached.
460 // For those devices behind hub, we get its attach/detach event by hooking Get_Port_Status request at control transfer for those hub.
462 ParentRouteChart
.Dword
= 0;
463 XhcPollPortStatusChange (Xhc
, ParentRouteChart
, PortNumber
, PortStatus
);
466 gBS
->RestoreTPL (OldTpl
);
472 Sets a feature for the specified root hub port.
474 @param This This EFI_USB2_HC_PROTOCOL instance.
475 @param PortNumber Root hub port to set.
476 @param PortFeature Feature to set.
478 @retval EFI_SUCCESS The feature specified by PortFeature was set.
479 @retval EFI_INVALID_PARAMETER PortNumber is invalid or PortFeature is invalid.
480 @retval EFI_DEVICE_ERROR Can't read register.
485 XhcSetRootHubPortFeature (
486 IN EFI_USB2_HC_PROTOCOL
*This
,
488 IN EFI_USB_PORT_FEATURE PortFeature
491 USB_XHCI_INSTANCE
*Xhc
;
498 OldTpl
= gBS
->RaiseTPL (XHC_TPL
);
500 Xhc
= XHC_FROM_THIS (This
);
501 Status
= EFI_SUCCESS
;
503 TotalPort
= (Xhc
->HcSParams1
.Data
.MaxPorts
);
505 if (PortNumber
>= TotalPort
) {
506 Status
= EFI_INVALID_PARAMETER
;
510 Offset
= (UINT32
) (XHC_PORTSC_OFFSET
+ (0x10 * PortNumber
));
511 State
= XhcReadOpReg (Xhc
, Offset
);
514 // Mask off the port status change bits, these bits are
517 State
&= ~ (BIT1
| BIT17
| BIT18
| BIT19
| BIT20
| BIT21
| BIT22
| BIT23
);
519 switch (PortFeature
) {
520 case EfiUsbPortEnable
:
522 // Ports may only be enabled by the xHC. Software cannot enable a port by writing a '1' to this flag.
523 // A port may be disabled by software writing a '1' to this flag.
525 Status
= EFI_SUCCESS
;
528 case EfiUsbPortSuspend
:
529 State
|= XHC_PORTSC_LWS
;
530 XhcWriteOpReg (Xhc
, Offset
, State
);
531 State
&= ~XHC_PORTSC_PLS
;
533 XhcWriteOpReg (Xhc
, Offset
, State
);
536 case EfiUsbPortReset
:
537 DEBUG ((EFI_D_INFO
, "XhcUsbPortReset!\n"));
539 // Make sure Host Controller not halt before reset it
541 if (XhcIsHalt (Xhc
)) {
542 Status
= XhcRunHC (Xhc
, XHC_GENERIC_TIMEOUT
);
544 if (EFI_ERROR (Status
)) {
545 DEBUG ((EFI_D_INFO
, "XhcSetRootHubPortFeature :failed to start HC - %r\n", Status
));
551 // 4.3.1 Resetting a Root Hub Port
552 // 1) Write the PORTSC register with the Port Reset (PR) bit set to '1'.
554 State
|= XHC_PORTSC_RESET
;
555 XhcWriteOpReg (Xhc
, Offset
, State
);
556 XhcWaitOpRegBit(Xhc
, Offset
, XHC_PORTSC_PRC
, TRUE
, XHC_GENERIC_TIMEOUT
);
559 case EfiUsbPortPower
:
561 // Not supported, ignore the operation
563 Status
= EFI_SUCCESS
;
566 case EfiUsbPortOwner
:
568 // XHCI root hub port don't has the owner bit, ignore the operation
570 Status
= EFI_SUCCESS
;
574 Status
= EFI_INVALID_PARAMETER
;
578 DEBUG ((EFI_D_INFO
, "XhcSetRootHubPortFeature: status %r\n", Status
));
579 gBS
->RestoreTPL (OldTpl
);
586 Clears a feature for the specified root hub port.
588 @param This A pointer to the EFI_USB2_HC_PROTOCOL instance.
589 @param PortNumber Specifies the root hub port whose feature is
590 requested to be cleared.
591 @param PortFeature Indicates the feature selector associated with the
592 feature clear request.
594 @retval EFI_SUCCESS The feature specified by PortFeature was cleared
595 for the USB root hub port specified by PortNumber.
596 @retval EFI_INVALID_PARAMETER PortNumber is invalid or PortFeature is invalid.
597 @retval EFI_DEVICE_ERROR Can't read register.
602 XhcClearRootHubPortFeature (
603 IN EFI_USB2_HC_PROTOCOL
*This
,
605 IN EFI_USB_PORT_FEATURE PortFeature
608 USB_XHCI_INSTANCE
*Xhc
;
615 OldTpl
= gBS
->RaiseTPL (XHC_TPL
);
617 Xhc
= XHC_FROM_THIS (This
);
618 Status
= EFI_SUCCESS
;
620 TotalPort
= (Xhc
->HcSParams1
.Data
.MaxPorts
);
622 if (PortNumber
>= TotalPort
) {
623 Status
= EFI_INVALID_PARAMETER
;
627 Offset
= XHC_PORTSC_OFFSET
+ (0x10 * PortNumber
);
630 // Mask off the port status change bits, these bits are
633 State
= XhcReadOpReg (Xhc
, Offset
);
634 State
&= ~ (BIT1
| BIT17
| BIT18
| BIT19
| BIT20
| BIT21
| BIT22
| BIT23
);
636 switch (PortFeature
) {
637 case EfiUsbPortEnable
:
639 // Ports may only be enabled by the xHC. Software cannot enable a port by writing a '1' to this flag.
640 // A port may be disabled by software writing a '1' to this flag.
642 State
|= XHC_PORTSC_PED
;
643 State
&= ~XHC_PORTSC_RESET
;
644 XhcWriteOpReg (Xhc
, Offset
, State
);
647 case EfiUsbPortSuspend
:
648 State
|= XHC_PORTSC_LWS
;
649 XhcWriteOpReg (Xhc
, Offset
, State
);
650 State
&= ~XHC_PORTSC_PLS
;
651 XhcWriteOpReg (Xhc
, Offset
, State
);
654 case EfiUsbPortReset
:
656 // PORTSC_RESET BIT(4) bit is RW1S attribute, which means Write-1-to-set status:
657 // Register bits indicate status when read, a clear bit may be set by
658 // writing a '1'. Writing a '0' to RW1S bits has no effect.
662 case EfiUsbPortOwner
:
664 // XHCI root hub port don't has the owner bit, ignore the operation
668 case EfiUsbPortConnectChange
:
670 // Clear connect status change
672 State
|= XHC_PORTSC_CSC
;
673 XhcWriteOpReg (Xhc
, Offset
, State
);
676 case EfiUsbPortEnableChange
:
678 // Clear enable status change
680 State
|= XHC_PORTSC_PEC
;
681 XhcWriteOpReg (Xhc
, Offset
, State
);
684 case EfiUsbPortOverCurrentChange
:
686 // Clear PortOverCurrent change
688 State
|= XHC_PORTSC_OCC
;
689 XhcWriteOpReg (Xhc
, Offset
, State
);
692 case EfiUsbPortResetChange
:
694 // Clear Port Reset change
696 State
|= XHC_PORTSC_PRC
;
697 XhcWriteOpReg (Xhc
, Offset
, State
);
700 case EfiUsbPortPower
:
701 case EfiUsbPortSuspendChange
:
703 // Not supported or not related operation
708 Status
= EFI_INVALID_PARAMETER
;
713 DEBUG ((EFI_D_INFO
, "XhcClearRootHubPortFeature: status %r\n", Status
));
714 gBS
->RestoreTPL (OldTpl
);
721 Submits control transfer to a target USB device.
723 @param This This EFI_USB2_HC_PROTOCOL instance.
724 @param DeviceAddress The target device address.
725 @param DeviceSpeed Target device speed.
726 @param MaximumPacketLength Maximum packet size the default control transfer
727 endpoint is capable of sending or receiving.
728 @param Request USB device request to send.
729 @param TransferDirection Specifies the data direction for the data stage
730 @param Data Data buffer to be transmitted or received from USB
732 @param DataLength The size (in bytes) of the data buffer.
733 @param Timeout Indicates the maximum timeout, in millisecond.
734 @param Translator Transaction translator to be used by this device.
735 @param TransferResult Return the result of this control transfer.
737 @retval EFI_SUCCESS Transfer was completed successfully.
738 @retval EFI_OUT_OF_RESOURCES The transfer failed due to lack of resources.
739 @retval EFI_INVALID_PARAMETER Some parameters are invalid.
740 @retval EFI_TIMEOUT Transfer failed due to timeout.
741 @retval EFI_DEVICE_ERROR Transfer failed due to host controller or device error.
747 IN EFI_USB2_HC_PROTOCOL
*This
,
748 IN UINT8 DeviceAddress
,
749 IN UINT8 DeviceSpeed
,
750 IN UINTN MaximumPacketLength
,
751 IN EFI_USB_DEVICE_REQUEST
*Request
,
752 IN EFI_USB_DATA_DIRECTION TransferDirection
,
754 IN OUT UINTN
*DataLength
,
756 IN EFI_USB2_HC_TRANSACTION_TRANSLATOR
*Translator
,
757 OUT UINT32
*TransferResult
760 USB_XHCI_INSTANCE
*Xhc
;
764 UINT8 DescriptorType
;
769 EFI_USB_HUB_DESCRIPTOR
*HubDesc
;
772 EFI_STATUS RecoveryStatus
;
774 EFI_USB_PORT_STATUS PortStatus
;
776 EFI_USB_DEVICE_REQUEST ClearPortRequest
;
780 // Validate parameters
782 if ((Request
== NULL
) || (TransferResult
== NULL
)) {
783 return EFI_INVALID_PARAMETER
;
786 if ((TransferDirection
!= EfiUsbDataIn
) &&
787 (TransferDirection
!= EfiUsbDataOut
) &&
788 (TransferDirection
!= EfiUsbNoData
)) {
789 return EFI_INVALID_PARAMETER
;
792 if ((TransferDirection
== EfiUsbNoData
) &&
793 ((Data
!= NULL
) || (*DataLength
!= 0))) {
794 return EFI_INVALID_PARAMETER
;
797 if ((TransferDirection
!= EfiUsbNoData
) &&
798 ((Data
== NULL
) || (*DataLength
== 0))) {
799 return EFI_INVALID_PARAMETER
;
802 if ((MaximumPacketLength
!= 8) && (MaximumPacketLength
!= 16) &&
803 (MaximumPacketLength
!= 32) && (MaximumPacketLength
!= 64) &&
804 (MaximumPacketLength
!= 512)
806 return EFI_INVALID_PARAMETER
;
809 if ((DeviceSpeed
== EFI_USB_SPEED_LOW
) && (MaximumPacketLength
!= 8)) {
810 return EFI_INVALID_PARAMETER
;
813 if ((DeviceSpeed
== EFI_USB_SPEED_SUPER
) && (MaximumPacketLength
!= 512)) {
814 return EFI_INVALID_PARAMETER
;
817 OldTpl
= gBS
->RaiseTPL (XHC_TPL
);
819 Xhc
= XHC_FROM_THIS (This
);
821 Status
= EFI_DEVICE_ERROR
;
822 *TransferResult
= EFI_USB_ERR_SYSTEM
;
825 if (XhcIsHalt (Xhc
) || XhcIsSysError (Xhc
)) {
826 DEBUG ((EFI_D_ERROR
, "XhcControlTransfer: HC halted at entrance\n"));
831 // Check if the device is still enabled before every transaction.
833 SlotId
= XhcBusDevAddrToSlotId (Xhc
, DeviceAddress
);
839 // Hook the Set_Address request from UsbBus.
840 // According to XHCI 1.0 spec, the Set_Address request is replaced by XHCI's Address_Device cmd.
842 if ((Request
->Request
== USB_REQ_SET_ADDRESS
) &&
843 (Request
->RequestType
== USB_REQUEST_TYPE (EfiUsbNoData
, USB_REQ_TYPE_STANDARD
, USB_TARGET_DEVICE
))) {
845 // Reset the BusDevAddr field of all disabled entries in UsbDevContext array firstly.
846 // This way is used to clean the history to avoid using wrong device address by XhcAsyncInterruptTransfer().
848 for (Index
= 0; Index
< 255; Index
++) {
849 if (!Xhc
->UsbDevContext
[Index
+ 1].Enabled
&&
850 (Xhc
->UsbDevContext
[Index
+ 1].SlotId
== 0) &&
851 (Xhc
->UsbDevContext
[Index
+ 1].BusDevAddr
== (UINT8
)Request
->Value
)) {
852 Xhc
->UsbDevContext
[Index
+ 1].BusDevAddr
= 0;
856 if (Xhc
->UsbDevContext
[SlotId
].XhciDevAddr
== 0) {
857 Status
= EFI_DEVICE_ERROR
;
861 // The actual device address has been assigned by XHCI during initializing the device slot.
862 // So we just need establish the mapping relationship between the device address requested from UsbBus
863 // and the actual device address assigned by XHCI. The the following invocations through EFI_USB2_HC_PROTOCOL interface
864 // can find out the actual device address by it.
866 Xhc
->UsbDevContext
[SlotId
].BusDevAddr
= (UINT8
)Request
->Value
;
867 Status
= EFI_SUCCESS
;
872 // Create a new URB, insert it into the asynchronous
873 // schedule list, then poll the execution status.
874 // Note that we encode the direction in address although default control
875 // endpoint is bidirectional. XhcCreateUrb expects this
876 // combination of Ep addr and its direction.
878 Endpoint
= (UINT8
) (0 | ((TransferDirection
== EfiUsbDataIn
) ? 0x80 : 0));
894 DEBUG ((EFI_D_ERROR
, "XhcControlTransfer: failed to create URB"));
895 Status
= EFI_OUT_OF_RESOURCES
;
899 Status
= XhcExecTransfer (Xhc
, FALSE
, Urb
, Timeout
);
902 // Get the status from URB. The result is updated in XhcCheckUrbResult
903 // which is called by XhcExecTransfer
905 *TransferResult
= Urb
->Result
;
906 *DataLength
= Urb
->Completed
;
908 if (*TransferResult
== EFI_USB_NOERROR
) {
909 Status
= EFI_SUCCESS
;
910 } else if (*TransferResult
== EFI_USB_ERR_STALL
) {
911 RecoveryStatus
= XhcRecoverHaltedEndpoint(Xhc
, Urb
);
912 if (EFI_ERROR (RecoveryStatus
)) {
913 DEBUG ((EFI_D_ERROR
, "XhcControlTransfer: XhcRecoverHaltedEndpoint failed\n"));
915 Status
= EFI_DEVICE_ERROR
;
921 Xhc
->PciIo
->Flush (Xhc
->PciIo
);
923 if (Urb
->DataMap
!= NULL
) {
924 Status
= Xhc
->PciIo
->Unmap (Xhc
->PciIo
, Urb
->DataMap
);
925 ASSERT_EFI_ERROR (Status
);
926 if (EFI_ERROR (Status
)) {
927 Status
= EFI_DEVICE_ERROR
;
933 // Hook Get_Descriptor request from UsbBus as we need evaluate context and configure endpoint.
934 // Hook Get_Status request form UsbBus as we need trace device attach/detach event happened at hub.
935 // Hook Set_Config request from UsbBus as we need configure device endpoint.
937 if ((Request
->Request
== USB_REQ_GET_DESCRIPTOR
) &&
938 ((Request
->RequestType
== USB_REQUEST_TYPE (EfiUsbDataIn
, USB_REQ_TYPE_STANDARD
, USB_TARGET_DEVICE
)) ||
939 ((Request
->RequestType
== USB_REQUEST_TYPE (EfiUsbDataIn
, USB_REQ_TYPE_CLASS
, USB_TARGET_DEVICE
))))) {
940 DescriptorType
= (UINT8
)(Request
->Value
>> 8);
941 if ((DescriptorType
== USB_DESC_TYPE_DEVICE
) && ((*DataLength
== sizeof (EFI_USB_DEVICE_DESCRIPTOR
)) || ((DeviceSpeed
== EFI_USB_SPEED_FULL
) && (*DataLength
== 8)))) {
942 ASSERT (Data
!= NULL
);
944 // Store a copy of device scriptor as hub device need this info to configure endpoint.
946 CopyMem (&Xhc
->UsbDevContext
[SlotId
].DevDesc
, Data
, *DataLength
);
947 if (Xhc
->UsbDevContext
[SlotId
].DevDesc
.BcdUSB
== 0x0300) {
949 // If it's a usb3.0 device, then its max packet size is a 2^n.
951 MaxPacket0
= 1 << Xhc
->UsbDevContext
[SlotId
].DevDesc
.MaxPacketSize0
;
953 MaxPacket0
= Xhc
->UsbDevContext
[SlotId
].DevDesc
.MaxPacketSize0
;
955 Xhc
->UsbDevContext
[SlotId
].ConfDesc
= AllocateZeroPool (Xhc
->UsbDevContext
[SlotId
].DevDesc
.NumConfigurations
* sizeof (EFI_USB_CONFIG_DESCRIPTOR
*));
956 if (Xhc
->HcCParams
.Data
.Csz
== 0) {
957 Status
= XhcEvaluateContext (Xhc
, SlotId
, MaxPacket0
);
959 Status
= XhcEvaluateContext64 (Xhc
, SlotId
, MaxPacket0
);
961 } else if (DescriptorType
== USB_DESC_TYPE_CONFIG
) {
962 ASSERT (Data
!= NULL
);
963 if (*DataLength
== ((UINT16
*)Data
)[1]) {
965 // Get configuration value from request, Store the configuration descriptor for Configure_Endpoint cmd.
967 Index
= (UINT8
)Request
->Value
;
968 ASSERT (Index
< Xhc
->UsbDevContext
[SlotId
].DevDesc
.NumConfigurations
);
969 Xhc
->UsbDevContext
[SlotId
].ConfDesc
[Index
] = AllocateZeroPool(*DataLength
);
970 CopyMem (Xhc
->UsbDevContext
[SlotId
].ConfDesc
[Index
], Data
, *DataLength
);
972 // Default to use AlternateSetting 0 for all interfaces.
974 Xhc
->UsbDevContext
[SlotId
].ActiveAlternateSetting
= AllocateZeroPool (Xhc
->UsbDevContext
[SlotId
].ConfDesc
[Index
]->NumInterfaces
* sizeof (UINT8
));
976 } else if (((DescriptorType
== USB_DESC_TYPE_HUB
) ||
977 (DescriptorType
== USB_DESC_TYPE_HUB_SUPER_SPEED
)) && (*DataLength
> 2)) {
978 ASSERT (Data
!= NULL
);
979 HubDesc
= (EFI_USB_HUB_DESCRIPTOR
*)Data
;
980 ASSERT (HubDesc
->NumPorts
<= 15);
982 // The bit 5,6 of HubCharacter field of Hub Descriptor is TTT.
984 TTT
= (UINT8
)((HubDesc
->HubCharacter
& (BIT5
| BIT6
)) >> 5);
985 if (Xhc
->UsbDevContext
[SlotId
].DevDesc
.DeviceProtocol
== 2) {
987 // Don't support multi-TT feature for super speed hub now.
990 DEBUG ((EFI_D_ERROR
, "XHCI: Don't support multi-TT feature for Hub now. (force to disable MTT)\n"));
995 if (Xhc
->HcCParams
.Data
.Csz
== 0) {
996 Status
= XhcConfigHubContext (Xhc
, SlotId
, HubDesc
->NumPorts
, TTT
, MTT
);
998 Status
= XhcConfigHubContext64 (Xhc
, SlotId
, HubDesc
->NumPorts
, TTT
, MTT
);
1001 } else if ((Request
->Request
== USB_REQ_SET_CONFIG
) &&
1002 (Request
->RequestType
== USB_REQUEST_TYPE (EfiUsbNoData
, USB_REQ_TYPE_STANDARD
, USB_TARGET_DEVICE
))) {
1004 // Hook Set_Config request from UsbBus as we need configure device endpoint.
1006 for (Index
= 0; Index
< Xhc
->UsbDevContext
[SlotId
].DevDesc
.NumConfigurations
; Index
++) {
1007 if (Xhc
->UsbDevContext
[SlotId
].ConfDesc
[Index
]->ConfigurationValue
== (UINT8
)Request
->Value
) {
1008 if (Xhc
->HcCParams
.Data
.Csz
== 0) {
1009 Status
= XhcSetConfigCmd (Xhc
, SlotId
, DeviceSpeed
, Xhc
->UsbDevContext
[SlotId
].ConfDesc
[Index
]);
1011 Status
= XhcSetConfigCmd64 (Xhc
, SlotId
, DeviceSpeed
, Xhc
->UsbDevContext
[SlotId
].ConfDesc
[Index
]);
1016 } else if ((Request
->Request
== USB_REQ_SET_INTERFACE
) &&
1017 (Request
->RequestType
== USB_REQUEST_TYPE (EfiUsbNoData
, USB_REQ_TYPE_STANDARD
, USB_TARGET_INTERFACE
))) {
1019 // Hook Set_Interface request from UsbBus as we need configure interface setting.
1020 // Request->Value indicates AlterlateSetting to set
1021 // Request->Index indicates Interface to set
1023 if (Xhc
->UsbDevContext
[SlotId
].ActiveAlternateSetting
[(UINT8
) Request
->Index
] != (UINT8
) Request
->Value
) {
1024 if (Xhc
->HcCParams
.Data
.Csz
== 0) {
1025 Status
= XhcSetInterface (Xhc
, SlotId
, DeviceSpeed
, Xhc
->UsbDevContext
[SlotId
].ConfDesc
[Xhc
->UsbDevContext
[SlotId
].ActiveConfiguration
- 1], Request
);
1027 Status
= XhcSetInterface64 (Xhc
, SlotId
, DeviceSpeed
, Xhc
->UsbDevContext
[SlotId
].ConfDesc
[Xhc
->UsbDevContext
[SlotId
].ActiveConfiguration
- 1], Request
);
1030 } else if ((Request
->Request
== USB_REQ_GET_STATUS
) &&
1031 (Request
->RequestType
== USB_REQUEST_TYPE (EfiUsbDataIn
, USB_REQ_TYPE_CLASS
, USB_TARGET_OTHER
))) {
1032 ASSERT (Data
!= NULL
);
1034 // Hook Get_Status request from UsbBus to keep track of the port status change.
1036 State
= *(UINT32
*)Data
;
1037 PortStatus
.PortStatus
= 0;
1038 PortStatus
.PortChangeStatus
= 0;
1040 if (DeviceSpeed
== EFI_USB_SPEED_SUPER
) {
1042 // For super speed hub, its bit10~12 presents the attached device speed.
1044 if ((State
& XHC_PORTSC_PS
) >> 10 == 0) {
1045 PortStatus
.PortStatus
|= USB_PORT_STAT_SUPER_SPEED
;
1049 // For high or full/low speed hub, its bit9~10 presents the attached device speed.
1051 if (XHC_BIT_IS_SET (State
, BIT9
)) {
1052 PortStatus
.PortStatus
|= USB_PORT_STAT_LOW_SPEED
;
1053 } else if (XHC_BIT_IS_SET (State
, BIT10
)) {
1054 PortStatus
.PortStatus
|= USB_PORT_STAT_HIGH_SPEED
;
1059 // Convert the XHCI port/port change state to UEFI status
1061 MapSize
= sizeof (mUsbHubPortStateMap
) / sizeof (USB_PORT_STATE_MAP
);
1062 for (Index
= 0; Index
< MapSize
; Index
++) {
1063 if (XHC_BIT_IS_SET (State
, mUsbHubPortStateMap
[Index
].HwState
)) {
1064 PortStatus
.PortStatus
= (UINT16
) (PortStatus
.PortStatus
| mUsbHubPortStateMap
[Index
].UefiState
);
1068 MapSize
= sizeof (mUsbHubPortChangeMap
) / sizeof (USB_PORT_STATE_MAP
);
1069 for (Index
= 0; Index
< MapSize
; Index
++) {
1070 if (XHC_BIT_IS_SET (State
, mUsbHubPortChangeMap
[Index
].HwState
)) {
1071 PortStatus
.PortChangeStatus
= (UINT16
) (PortStatus
.PortChangeStatus
| mUsbHubPortChangeMap
[Index
].UefiState
);
1075 MapSize
= sizeof (mUsbHubClearPortChangeMap
) / sizeof (USB_CLEAR_PORT_MAP
);
1077 for (Index
= 0; Index
< MapSize
; Index
++) {
1078 if (XHC_BIT_IS_SET (State
, mUsbHubClearPortChangeMap
[Index
].HwState
)) {
1079 ZeroMem (&ClearPortRequest
, sizeof (EFI_USB_DEVICE_REQUEST
));
1080 ClearPortRequest
.RequestType
= USB_REQUEST_TYPE (EfiUsbNoData
, USB_REQ_TYPE_CLASS
, USB_TARGET_OTHER
);
1081 ClearPortRequest
.Request
= (UINT8
) USB_REQ_CLEAR_FEATURE
;
1082 ClearPortRequest
.Value
= mUsbHubClearPortChangeMap
[Index
].Selector
;
1083 ClearPortRequest
.Index
= Request
->Index
;
1084 ClearPortRequest
.Length
= 0;
1086 XhcControlTransfer (
1090 MaximumPacketLength
,
1102 XhcPollPortStatusChange (Xhc
, Xhc
->UsbDevContext
[SlotId
].RouteString
, (UINT8
)Request
->Index
, &PortStatus
);
1104 *(UINT32
*)Data
= *(UINT32
*)&PortStatus
;
1112 if (EFI_ERROR (Status
)) {
1113 DEBUG ((EFI_D_ERROR
, "XhcControlTransfer: error - %r, transfer - %x\n", Status
, *TransferResult
));
1116 gBS
->RestoreTPL (OldTpl
);
1123 Submits bulk transfer to a bulk endpoint of a USB device.
1125 @param This This EFI_USB2_HC_PROTOCOL instance.
1126 @param DeviceAddress Target device address.
1127 @param EndPointAddress Endpoint number and its direction in bit 7.
1128 @param DeviceSpeed Device speed, Low speed device doesn't support bulk
1130 @param MaximumPacketLength Maximum packet size the endpoint is capable of
1131 sending or receiving.
1132 @param DataBuffersNumber Number of data buffers prepared for the transfer.
1133 @param Data Array of pointers to the buffers of data to transmit
1134 from or receive into.
1135 @param DataLength The lenght of the data buffer.
1136 @param DataToggle On input, the initial data toggle for the transfer;
1137 On output, it is updated to to next data toggle to
1138 use of the subsequent bulk transfer.
1139 @param Timeout Indicates the maximum time, in millisecond, which
1140 the transfer is allowed to complete.
1141 @param Translator A pointr to the transaction translator data.
1142 @param TransferResult A pointer to the detailed result information of the
1145 @retval EFI_SUCCESS The transfer was completed successfully.
1146 @retval EFI_OUT_OF_RESOURCES The transfer failed due to lack of resource.
1147 @retval EFI_INVALID_PARAMETER Some parameters are invalid.
1148 @retval EFI_TIMEOUT The transfer failed due to timeout.
1149 @retval EFI_DEVICE_ERROR The transfer failed due to host controller error.
1155 IN EFI_USB2_HC_PROTOCOL
*This
,
1156 IN UINT8 DeviceAddress
,
1157 IN UINT8 EndPointAddress
,
1158 IN UINT8 DeviceSpeed
,
1159 IN UINTN MaximumPacketLength
,
1160 IN UINT8 DataBuffersNumber
,
1161 IN OUT VOID
*Data
[EFI_USB_MAX_BULK_BUFFER_NUM
],
1162 IN OUT UINTN
*DataLength
,
1163 IN OUT UINT8
*DataToggle
,
1165 IN EFI_USB2_HC_TRANSACTION_TRANSLATOR
*Translator
,
1166 OUT UINT32
*TransferResult
1169 USB_XHCI_INSTANCE
*Xhc
;
1173 EFI_STATUS RecoveryStatus
;
1177 // Validate the parameters
1179 if ((DataLength
== NULL
) || (*DataLength
== 0) ||
1180 (Data
== NULL
) || (Data
[0] == NULL
) || (TransferResult
== NULL
)) {
1181 return EFI_INVALID_PARAMETER
;
1184 if ((*DataToggle
!= 0) && (*DataToggle
!= 1)) {
1185 return EFI_INVALID_PARAMETER
;
1188 if ((DeviceSpeed
== EFI_USB_SPEED_LOW
) ||
1189 ((DeviceSpeed
== EFI_USB_SPEED_FULL
) && (MaximumPacketLength
> 64)) ||
1190 ((EFI_USB_SPEED_HIGH
== DeviceSpeed
) && (MaximumPacketLength
> 512)) ||
1191 ((EFI_USB_SPEED_SUPER
== DeviceSpeed
) && (MaximumPacketLength
> 1024))) {
1192 return EFI_INVALID_PARAMETER
;
1195 OldTpl
= gBS
->RaiseTPL (XHC_TPL
);
1197 Xhc
= XHC_FROM_THIS (This
);
1199 *TransferResult
= EFI_USB_ERR_SYSTEM
;
1200 Status
= EFI_DEVICE_ERROR
;
1202 if (XhcIsHalt (Xhc
) || XhcIsSysError (Xhc
)) {
1203 DEBUG ((EFI_D_ERROR
, "XhcBulkTransfer: HC is halted\n"));
1208 // Check if the device is still enabled before every transaction.
1210 SlotId
= XhcBusDevAddrToSlotId (Xhc
, DeviceAddress
);
1216 // Create a new URB, insert it into the asynchronous
1217 // schedule list, then poll the execution status.
1219 Urb
= XhcCreateUrb (
1224 MaximumPacketLength
,
1234 DEBUG ((EFI_D_ERROR
, "XhcBulkTransfer: failed to create URB\n"));
1235 Status
= EFI_OUT_OF_RESOURCES
;
1239 Status
= XhcExecTransfer (Xhc
, FALSE
, Urb
, Timeout
);
1241 *TransferResult
= Urb
->Result
;
1242 *DataLength
= Urb
->Completed
;
1244 if (*TransferResult
== EFI_USB_NOERROR
) {
1245 Status
= EFI_SUCCESS
;
1246 } else if (*TransferResult
== EFI_USB_ERR_STALL
) {
1247 RecoveryStatus
= XhcRecoverHaltedEndpoint(Xhc
, Urb
);
1248 if (EFI_ERROR (RecoveryStatus
)) {
1249 DEBUG ((EFI_D_ERROR
, "XhcBulkTransfer: XhcRecoverHaltedEndpoint failed\n"));
1251 Status
= EFI_DEVICE_ERROR
;
1254 Xhc
->PciIo
->Flush (Xhc
->PciIo
);
1255 XhcFreeUrb (Xhc
, Urb
);
1259 if (EFI_ERROR (Status
)) {
1260 DEBUG ((EFI_D_ERROR
, "XhcBulkTransfer: error - %r, transfer - %x\n", Status
, *TransferResult
));
1262 gBS
->RestoreTPL (OldTpl
);
1268 Submits an asynchronous interrupt transfer to an
1269 interrupt endpoint of a USB device.
1271 @param This This EFI_USB2_HC_PROTOCOL instance.
1272 @param DeviceAddress Target device address.
1273 @param EndPointAddress Endpoint number and its direction encoded in bit 7
1274 @param DeviceSpeed Indicates device speed.
1275 @param MaximumPacketLength Maximum packet size the target endpoint is capable
1276 @param IsNewTransfer If TRUE, to submit an new asynchronous interrupt
1277 transfer If FALSE, to remove the specified
1278 asynchronous interrupt.
1279 @param DataToggle On input, the initial data toggle to use; on output,
1280 it is updated to indicate the next data toggle.
1281 @param PollingInterval The he interval, in milliseconds, that the transfer
1283 @param DataLength The length of data to receive at the rate specified
1285 @param Translator Transaction translator to use.
1286 @param CallBackFunction Function to call at the rate specified by
1288 @param Context Context to CallBackFunction.
1290 @retval EFI_SUCCESS The request has been successfully submitted or canceled.
1291 @retval EFI_INVALID_PARAMETER Some parameters are invalid.
1292 @retval EFI_OUT_OF_RESOURCES The request failed due to a lack of resources.
1293 @retval EFI_DEVICE_ERROR The transfer failed due to host controller error.
1298 XhcAsyncInterruptTransfer (
1299 IN EFI_USB2_HC_PROTOCOL
*This
,
1300 IN UINT8 DeviceAddress
,
1301 IN UINT8 EndPointAddress
,
1302 IN UINT8 DeviceSpeed
,
1303 IN UINTN MaximumPacketLength
,
1304 IN BOOLEAN IsNewTransfer
,
1305 IN OUT UINT8
*DataToggle
,
1306 IN UINTN PollingInterval
,
1307 IN UINTN DataLength
,
1308 IN EFI_USB2_HC_TRANSACTION_TRANSLATOR
*Translator
,
1309 IN EFI_ASYNC_USB_TRANSFER_CALLBACK CallBackFunction
,
1310 IN VOID
*Context OPTIONAL
1313 USB_XHCI_INSTANCE
*Xhc
;
1322 // Validate parameters
1324 if (!XHCI_IS_DATAIN (EndPointAddress
)) {
1325 return EFI_INVALID_PARAMETER
;
1328 if (IsNewTransfer
) {
1329 if (DataLength
== 0) {
1330 return EFI_INVALID_PARAMETER
;
1333 if ((*DataToggle
!= 1) && (*DataToggle
!= 0)) {
1334 return EFI_INVALID_PARAMETER
;
1337 if ((PollingInterval
> 255) || (PollingInterval
< 1)) {
1338 return EFI_INVALID_PARAMETER
;
1342 OldTpl
= gBS
->RaiseTPL (XHC_TPL
);
1344 Xhc
= XHC_FROM_THIS (This
);
1347 // Delete Async interrupt transfer request.
1349 if (!IsNewTransfer
) {
1351 // The delete request may happen after device is detached.
1353 for (Index
= 0; Index
< 255; Index
++) {
1354 if (Xhc
->UsbDevContext
[Index
+ 1].BusDevAddr
== DeviceAddress
) {
1360 Status
= EFI_INVALID_PARAMETER
;
1364 Status
= XhciDelAsyncIntTransfer (Xhc
, DeviceAddress
, EndPointAddress
);
1365 DEBUG ((EFI_D_INFO
, "XhcAsyncInterruptTransfer: remove old transfer for addr %d, Status = %r\n", DeviceAddress
, Status
));
1369 Status
= EFI_SUCCESS
;
1371 if (XhcIsHalt (Xhc
) || XhcIsSysError (Xhc
)) {
1372 DEBUG ((EFI_D_ERROR
, "XhcAsyncInterruptTransfer: HC is halt\n"));
1373 Status
= EFI_DEVICE_ERROR
;
1378 // Check if the device is still enabled before every transaction.
1380 SlotId
= XhcBusDevAddrToSlotId (Xhc
, DeviceAddress
);
1385 Data
= AllocateZeroPool (DataLength
);
1388 DEBUG ((EFI_D_ERROR
, "XhcAsyncInterruptTransfer: failed to allocate buffer\n"));
1389 Status
= EFI_OUT_OF_RESOURCES
;
1393 Urb
= XhcCreateUrb (
1398 MaximumPacketLength
,
1399 XHC_INT_TRANSFER_ASYNC
,
1408 DEBUG ((EFI_D_ERROR
, "XhcAsyncInterruptTransfer: failed to create URB\n"));
1410 Status
= EFI_OUT_OF_RESOURCES
;
1414 InsertHeadList (&Xhc
->AsyncIntTransfers
, &Urb
->UrbList
);
1416 // Ring the doorbell
1418 Status
= RingIntTransferDoorBell (Xhc
, Urb
);
1421 Xhc
->PciIo
->Flush (Xhc
->PciIo
);
1422 gBS
->RestoreTPL (OldTpl
);
1429 Submits synchronous interrupt transfer to an interrupt endpoint
1432 @param This This EFI_USB2_HC_PROTOCOL instance.
1433 @param DeviceAddress Target device address.
1434 @param EndPointAddress Endpoint number and its direction encoded in bit 7
1435 @param DeviceSpeed Indicates device speed.
1436 @param MaximumPacketLength Maximum packet size the target endpoint is capable
1437 of sending or receiving.
1438 @param Data Buffer of data that will be transmitted to USB
1439 device or received from USB device.
1440 @param DataLength On input, the size, in bytes, of the data buffer; On
1441 output, the number of bytes transferred.
1442 @param DataToggle On input, the initial data toggle to use; on output,
1443 it is updated to indicate the next data toggle.
1444 @param Timeout Maximum time, in second, to complete.
1445 @param Translator Transaction translator to use.
1446 @param TransferResult Variable to receive the transfer result.
1448 @return EFI_SUCCESS The transfer was completed successfully.
1449 @return EFI_OUT_OF_RESOURCES The transfer failed due to lack of resource.
1450 @return EFI_INVALID_PARAMETER Some parameters are invalid.
1451 @return EFI_TIMEOUT The transfer failed due to timeout.
1452 @return EFI_DEVICE_ERROR The failed due to host controller or device error
1457 XhcSyncInterruptTransfer (
1458 IN EFI_USB2_HC_PROTOCOL
*This
,
1459 IN UINT8 DeviceAddress
,
1460 IN UINT8 EndPointAddress
,
1461 IN UINT8 DeviceSpeed
,
1462 IN UINTN MaximumPacketLength
,
1464 IN OUT UINTN
*DataLength
,
1465 IN OUT UINT8
*DataToggle
,
1467 IN EFI_USB2_HC_TRANSACTION_TRANSLATOR
*Translator
,
1468 OUT UINT32
*TransferResult
1471 USB_XHCI_INSTANCE
*Xhc
;
1475 EFI_STATUS RecoveryStatus
;
1479 // Validates parameters
1481 if ((DataLength
== NULL
) || (*DataLength
== 0) ||
1482 (Data
== NULL
) || (TransferResult
== NULL
)) {
1483 return EFI_INVALID_PARAMETER
;
1486 if ((*DataToggle
!= 1) && (*DataToggle
!= 0)) {
1487 return EFI_INVALID_PARAMETER
;
1490 if (((DeviceSpeed
== EFI_USB_SPEED_LOW
) && (MaximumPacketLength
!= 8)) ||
1491 ((DeviceSpeed
== EFI_USB_SPEED_FULL
) && (MaximumPacketLength
> 64)) ||
1492 ((DeviceSpeed
== EFI_USB_SPEED_HIGH
) && (MaximumPacketLength
> 3072))) {
1493 return EFI_INVALID_PARAMETER
;
1496 OldTpl
= gBS
->RaiseTPL (XHC_TPL
);
1498 Xhc
= XHC_FROM_THIS (This
);
1500 *TransferResult
= EFI_USB_ERR_SYSTEM
;
1501 Status
= EFI_DEVICE_ERROR
;
1503 if (XhcIsHalt (Xhc
) || XhcIsSysError (Xhc
)) {
1504 DEBUG ((EFI_D_ERROR
, "EhcSyncInterruptTransfer: HC is halt\n"));
1509 // Check if the device is still enabled before every transaction.
1511 SlotId
= XhcBusDevAddrToSlotId (Xhc
, DeviceAddress
);
1516 Urb
= XhcCreateUrb (
1521 MaximumPacketLength
,
1522 XHC_INT_TRANSFER_SYNC
,
1531 DEBUG ((EFI_D_ERROR
, "XhcSyncInterruptTransfer: failed to create URB\n"));
1532 Status
= EFI_OUT_OF_RESOURCES
;
1536 Status
= XhcExecTransfer (Xhc
, FALSE
, Urb
, Timeout
);
1538 *TransferResult
= Urb
->Result
;
1539 *DataLength
= Urb
->Completed
;
1541 if (*TransferResult
== EFI_USB_NOERROR
) {
1542 Status
= EFI_SUCCESS
;
1543 } else if (*TransferResult
== EFI_USB_ERR_STALL
) {
1544 RecoveryStatus
= XhcRecoverHaltedEndpoint(Xhc
, Urb
);
1545 if (EFI_ERROR (RecoveryStatus
)) {
1546 DEBUG ((EFI_D_ERROR
, "XhcSyncInterruptTransfer: XhcRecoverHaltedEndpoint failed\n"));
1548 Status
= EFI_DEVICE_ERROR
;
1551 Xhc
->PciIo
->Flush (Xhc
->PciIo
);
1552 XhcFreeUrb (Xhc
, Urb
);
1555 if (EFI_ERROR (Status
)) {
1556 DEBUG ((EFI_D_ERROR
, "XhcSyncInterruptTransfer: error - %r, transfer - %x\n", Status
, *TransferResult
));
1558 gBS
->RestoreTPL (OldTpl
);
1565 Submits isochronous transfer to a target USB device.
1567 @param This This EFI_USB2_HC_PROTOCOL instance.
1568 @param DeviceAddress Target device address.
1569 @param EndPointAddress End point address with its direction.
1570 @param DeviceSpeed Device speed, Low speed device doesn't support this
1572 @param MaximumPacketLength Maximum packet size that the endpoint is capable of
1573 sending or receiving.
1574 @param DataBuffersNumber Number of data buffers prepared for the transfer.
1575 @param Data Array of pointers to the buffers of data that will
1576 be transmitted to USB device or received from USB
1578 @param DataLength The size, in bytes, of the data buffer.
1579 @param Translator Transaction translator to use.
1580 @param TransferResult Variable to receive the transfer result.
1582 @return EFI_UNSUPPORTED Isochronous transfer is unsupported.
1587 XhcIsochronousTransfer (
1588 IN EFI_USB2_HC_PROTOCOL
*This
,
1589 IN UINT8 DeviceAddress
,
1590 IN UINT8 EndPointAddress
,
1591 IN UINT8 DeviceSpeed
,
1592 IN UINTN MaximumPacketLength
,
1593 IN UINT8 DataBuffersNumber
,
1594 IN OUT VOID
*Data
[EFI_USB_MAX_ISO_BUFFER_NUM
],
1595 IN UINTN DataLength
,
1596 IN EFI_USB2_HC_TRANSACTION_TRANSLATOR
*Translator
,
1597 OUT UINT32
*TransferResult
1600 return EFI_UNSUPPORTED
;
1605 Submits Async isochronous transfer to a target USB device.
1607 @param This This EFI_USB2_HC_PROTOCOL instance.
1608 @param DeviceAddress Target device address.
1609 @param EndPointAddress End point address with its direction.
1610 @param DeviceSpeed Device speed, Low speed device doesn't support this
1612 @param MaximumPacketLength Maximum packet size that the endpoint is capable of
1613 sending or receiving.
1614 @param DataBuffersNumber Number of data buffers prepared for the transfer.
1615 @param Data Array of pointers to the buffers of data that will
1616 be transmitted to USB device or received from USB
1618 @param DataLength The size, in bytes, of the data buffer.
1619 @param Translator Transaction translator to use.
1620 @param IsochronousCallBack Function to be called when the transfer complete.
1621 @param Context Context passed to the call back function as
1624 @return EFI_UNSUPPORTED Isochronous transfer isn't supported.
1629 XhcAsyncIsochronousTransfer (
1630 IN EFI_USB2_HC_PROTOCOL
*This
,
1631 IN UINT8 DeviceAddress
,
1632 IN UINT8 EndPointAddress
,
1633 IN UINT8 DeviceSpeed
,
1634 IN UINTN MaximumPacketLength
,
1635 IN UINT8 DataBuffersNumber
,
1636 IN OUT VOID
*Data
[EFI_USB_MAX_ISO_BUFFER_NUM
],
1637 IN UINTN DataLength
,
1638 IN EFI_USB2_HC_TRANSACTION_TRANSLATOR
*Translator
,
1639 IN EFI_ASYNC_USB_TRANSFER_CALLBACK IsochronousCallBack
,
1643 return EFI_UNSUPPORTED
;
1647 Entry point for EFI drivers.
1649 @param ImageHandle EFI_HANDLE.
1650 @param SystemTable EFI_SYSTEM_TABLE.
1652 @retval EFI_SUCCESS Success.
1653 @retval Others Fail.
1658 XhcDriverEntryPoint (
1659 IN EFI_HANDLE ImageHandle
,
1660 IN EFI_SYSTEM_TABLE
*SystemTable
1663 return EfiLibInstallDriverBindingComponentName2 (
1666 &gXhciDriverBinding
,
1668 &gXhciComponentName
,
1669 &gXhciComponentName2
1675 Test to see if this driver supports ControllerHandle. Any
1676 ControllerHandle that has Usb2HcProtocol installed will
1679 @param This Protocol instance pointer.
1680 @param Controller Handle of device to test.
1681 @param RemainingDevicePath Not used.
1683 @return EFI_SUCCESS This driver supports this device.
1684 @return EFI_UNSUPPORTED This driver does not support this device.
1689 XhcDriverBindingSupported (
1690 IN EFI_DRIVER_BINDING_PROTOCOL
*This
,
1691 IN EFI_HANDLE Controller
,
1692 IN EFI_DEVICE_PATH_PROTOCOL
*RemainingDevicePath
1696 EFI_PCI_IO_PROTOCOL
*PciIo
;
1697 USB_CLASSC UsbClassCReg
;
1700 // Test whether there is PCI IO Protocol attached on the controller handle.
1702 Status
= gBS
->OpenProtocol (
1704 &gEfiPciIoProtocolGuid
,
1706 This
->DriverBindingHandle
,
1708 EFI_OPEN_PROTOCOL_BY_DRIVER
1711 if (EFI_ERROR (Status
)) {
1712 return EFI_UNSUPPORTED
;
1715 Status
= PciIo
->Pci
.Read (
1718 PCI_CLASSCODE_OFFSET
,
1719 sizeof (USB_CLASSC
) / sizeof (UINT8
),
1723 if (EFI_ERROR (Status
)) {
1724 Status
= EFI_UNSUPPORTED
;
1729 // Test whether the controller belongs to Xhci type
1731 if ((UsbClassCReg
.BaseCode
!= PCI_CLASS_SERIAL
) ||
1732 (UsbClassCReg
.SubClassCode
!= PCI_CLASS_SERIAL_USB
) ||
1733 (UsbClassCReg
.ProgInterface
!= PCI_IF_XHCI
)) {
1734 Status
= EFI_UNSUPPORTED
;
1738 gBS
->CloseProtocol (
1740 &gEfiPciIoProtocolGuid
,
1741 This
->DriverBindingHandle
,
1749 Create and initialize a USB_XHCI_INSTANCE structure.
1751 @param PciIo The PciIo on this device.
1752 @param DevicePath The device path of host controller.
1753 @param OriginalPciAttributes Original PCI attributes.
1755 @return The allocated and initialized USB_XHCI_INSTANCE structure if created,
1761 IN EFI_PCI_IO_PROTOCOL
*PciIo
,
1762 IN EFI_DEVICE_PATH_PROTOCOL
*DevicePath
,
1763 IN UINT64 OriginalPciAttributes
1766 USB_XHCI_INSTANCE
*Xhc
;
1771 Xhc
= AllocateZeroPool (sizeof (USB_XHCI_INSTANCE
));
1778 // Initialize private data structure
1780 Xhc
->Signature
= XHCI_INSTANCE_SIG
;
1782 Xhc
->DevicePath
= DevicePath
;
1783 Xhc
->OriginalPciAttributes
= OriginalPciAttributes
;
1784 CopyMem (&Xhc
->Usb2Hc
, &gXhciUsb2HcTemplate
, sizeof (EFI_USB2_HC_PROTOCOL
));
1786 InitializeListHead (&Xhc
->AsyncIntTransfers
);
1789 // Be caution that the Offset passed to XhcReadCapReg() should be Dword align
1791 Xhc
->CapLength
= XhcReadCapReg8 (Xhc
, XHC_CAPLENGTH_OFFSET
);
1792 Xhc
->HcSParams1
.Dword
= XhcReadCapReg (Xhc
, XHC_HCSPARAMS1_OFFSET
);
1793 Xhc
->HcSParams2
.Dword
= XhcReadCapReg (Xhc
, XHC_HCSPARAMS2_OFFSET
);
1794 Xhc
->HcCParams
.Dword
= XhcReadCapReg (Xhc
, XHC_HCCPARAMS_OFFSET
);
1795 Xhc
->DBOff
= XhcReadCapReg (Xhc
, XHC_DBOFF_OFFSET
);
1796 Xhc
->RTSOff
= XhcReadCapReg (Xhc
, XHC_RTSOFF_OFFSET
);
1799 // This PageSize field defines the page size supported by the xHC implementation.
1800 // This xHC supports a page size of 2^(n+12) if bit n is Set. For example,
1801 // if bit 0 is Set, the xHC supports 4k byte page sizes.
1803 PageSize
= XhcReadOpReg(Xhc
, XHC_PAGESIZE_OFFSET
) & XHC_PAGESIZE_MASK
;
1804 Xhc
->PageSize
= 1 << (HighBitSet32(PageSize
) + 12);
1806 ExtCapReg
= (UINT16
) (Xhc
->HcCParams
.Data
.ExtCapReg
);
1807 Xhc
->ExtCapRegBase
= ExtCapReg
<< 2;
1808 Xhc
->UsbLegSupOffset
= XhcGetCapabilityAddr (Xhc
, XHC_CAP_USB_LEGACY
);
1809 Xhc
->DebugCapSupOffset
= XhcGetCapabilityAddr (Xhc
, XHC_CAP_USB_DEBUG
);
1811 DEBUG ((EFI_D_INFO
, "XhcCreateUsb3Hc: Capability length 0x%x\n", Xhc
->CapLength
));
1812 DEBUG ((EFI_D_INFO
, "XhcCreateUsb3Hc: HcSParams1 0x%x\n", Xhc
->HcSParams1
));
1813 DEBUG ((EFI_D_INFO
, "XhcCreateUsb3Hc: HcSParams2 0x%x\n", Xhc
->HcSParams2
));
1814 DEBUG ((EFI_D_INFO
, "XhcCreateUsb3Hc: HcCParams 0x%x\n", Xhc
->HcCParams
));
1815 DEBUG ((EFI_D_INFO
, "XhcCreateUsb3Hc: DBOff 0x%x\n", Xhc
->DBOff
));
1816 DEBUG ((EFI_D_INFO
, "XhcCreateUsb3Hc: RTSOff 0x%x\n", Xhc
->RTSOff
));
1817 DEBUG ((EFI_D_INFO
, "XhcCreateUsb3Hc: UsbLegSupOffset 0x%x\n", Xhc
->UsbLegSupOffset
));
1818 DEBUG ((EFI_D_INFO
, "XhcCreateUsb3Hc: DebugCapSupOffset 0x%x\n", Xhc
->DebugCapSupOffset
));
1821 // Create AsyncRequest Polling Timer
1823 Status
= gBS
->CreateEvent (
1824 EVT_TIMER
| EVT_NOTIFY_SIGNAL
,
1826 XhcMonitorAsyncRequests
,
1831 if (EFI_ERROR (Status
)) {
1843 One notified function to stop the Host Controller when gBS->ExitBootServices() called.
1845 @param Event Pointer to this event
1846 @param Context Event handler private data
1851 XhcExitBootService (
1857 USB_XHCI_INSTANCE
*Xhc
;
1858 EFI_PCI_IO_PROTOCOL
*PciIo
;
1860 Xhc
= (USB_XHCI_INSTANCE
*) Context
;
1864 // Stop AsyncRequest Polling timer then stop the XHCI driver
1865 // and uninstall the XHCI protocl.
1867 gBS
->SetTimer (Xhc
->PollTimer
, TimerCancel
, 0);
1868 XhcHaltHC (Xhc
, XHC_GENERIC_TIMEOUT
);
1870 if (Xhc
->PollTimer
!= NULL
) {
1871 gBS
->CloseEvent (Xhc
->PollTimer
);
1874 XhcClearBiosOwnership (Xhc
);
1877 // Restore original PCI attributes
1881 EfiPciIoAttributeOperationSet
,
1882 Xhc
->OriginalPciAttributes
,
1888 Starting the Usb XHCI Driver.
1890 @param This Protocol instance pointer.
1891 @param Controller Handle of device to test.
1892 @param RemainingDevicePath Not used.
1894 @return EFI_SUCCESS supports this device.
1895 @return EFI_UNSUPPORTED do not support this device.
1896 @return EFI_DEVICE_ERROR cannot be started due to device Error.
1897 @return EFI_OUT_OF_RESOURCES cannot allocate resources.
1902 XhcDriverBindingStart (
1903 IN EFI_DRIVER_BINDING_PROTOCOL
*This
,
1904 IN EFI_HANDLE Controller
,
1905 IN EFI_DEVICE_PATH_PROTOCOL
*RemainingDevicePath
1909 EFI_PCI_IO_PROTOCOL
*PciIo
;
1911 UINT64 OriginalPciAttributes
;
1912 BOOLEAN PciAttributesSaved
;
1913 USB_XHCI_INSTANCE
*Xhc
;
1914 EFI_DEVICE_PATH_PROTOCOL
*HcDevicePath
;
1917 // Open the PciIo Protocol, then enable the USB host controller
1919 Status
= gBS
->OpenProtocol (
1921 &gEfiPciIoProtocolGuid
,
1923 This
->DriverBindingHandle
,
1925 EFI_OPEN_PROTOCOL_BY_DRIVER
1928 if (EFI_ERROR (Status
)) {
1933 // Open Device Path Protocol for on USB host controller
1935 HcDevicePath
= NULL
;
1936 Status
= gBS
->OpenProtocol (
1938 &gEfiDevicePathProtocolGuid
,
1939 (VOID
**) &HcDevicePath
,
1940 This
->DriverBindingHandle
,
1942 EFI_OPEN_PROTOCOL_GET_PROTOCOL
1945 PciAttributesSaved
= FALSE
;
1947 // Save original PCI attributes
1949 Status
= PciIo
->Attributes (
1951 EfiPciIoAttributeOperationGet
,
1953 &OriginalPciAttributes
1956 if (EFI_ERROR (Status
)) {
1959 PciAttributesSaved
= TRUE
;
1961 Status
= PciIo
->Attributes (
1963 EfiPciIoAttributeOperationSupported
,
1967 if (!EFI_ERROR (Status
)) {
1968 Supports
&= (UINT64
)EFI_PCI_DEVICE_ENABLE
;
1969 Status
= PciIo
->Attributes (
1971 EfiPciIoAttributeOperationEnable
,
1977 if (EFI_ERROR (Status
)) {
1978 DEBUG ((EFI_D_ERROR
, "XhcDriverBindingStart: failed to enable controller\n"));
1983 // Create then install USB2_HC_PROTOCOL
1985 Xhc
= XhcCreateUsbHc (PciIo
, HcDevicePath
, OriginalPciAttributes
);
1988 DEBUG ((EFI_D_ERROR
, "XhcDriverBindingStart: failed to create USB2_HC\n"));
1989 return EFI_OUT_OF_RESOURCES
;
1992 XhcSetBiosOwnership (Xhc
);
1994 XhcResetHC (Xhc
, XHC_RESET_TIMEOUT
);
1995 ASSERT (XhcIsHalt (Xhc
));
1998 // After Chip Hardware Reset wait until the Controller Not Ready (CNR) flag
1999 // in the USBSTS is '0' before writing any xHC Operational or Runtime registers.
2001 ASSERT (!(XHC_REG_BIT_IS_SET (Xhc
, XHC_USBSTS_OFFSET
, XHC_USBSTS_CNR
)));
2004 // Initialize the schedule
2009 // Start the Host Controller
2011 XhcRunHC(Xhc
, XHC_GENERIC_TIMEOUT
);
2014 // Start the asynchronous interrupt monitor
2016 Status
= gBS
->SetTimer (Xhc
->PollTimer
, TimerPeriodic
, XHC_ASYNC_TIMER_INTERVAL
);
2017 if (EFI_ERROR (Status
)) {
2018 DEBUG ((EFI_D_ERROR
, "XhcDriverBindingStart: failed to start async interrupt monitor\n"));
2019 XhcHaltHC (Xhc
, XHC_GENERIC_TIMEOUT
);
2024 // Create event to stop the HC when exit boot service.
2026 Status
= gBS
->CreateEventEx (
2031 &gEfiEventExitBootServicesGuid
,
2032 &Xhc
->ExitBootServiceEvent
2034 if (EFI_ERROR (Status
)) {
2039 // Install the component name protocol, don't fail the start
2040 // because of something for display.
2044 gXhciComponentName
.SupportedLanguages
,
2045 &Xhc
->ControllerNameTable
,
2046 L
"eXtensible Host Controller (USB 3.0)",
2051 gXhciComponentName2
.SupportedLanguages
,
2052 &Xhc
->ControllerNameTable
,
2053 L
"eXtensible Host Controller (USB 3.0)",
2057 Status
= gBS
->InstallProtocolInterface (
2059 &gEfiUsb2HcProtocolGuid
,
2060 EFI_NATIVE_INTERFACE
,
2063 if (EFI_ERROR (Status
)) {
2064 DEBUG ((EFI_D_ERROR
, "XhcDriverBindingStart: failed to install USB2_HC Protocol\n"));
2068 DEBUG ((EFI_D_INFO
, "XhcDriverBindingStart: XHCI started for controller @ %x\n", Controller
));
2072 gBS
->CloseEvent (Xhc
->PollTimer
);
2077 if (PciAttributesSaved
) {
2079 // Restore original PCI attributes
2083 EfiPciIoAttributeOperationSet
,
2084 OriginalPciAttributes
,
2089 gBS
->CloseProtocol (
2091 &gEfiPciIoProtocolGuid
,
2092 This
->DriverBindingHandle
,
2101 Stop this driver on ControllerHandle. Support stoping any child handles
2102 created by this driver.
2104 @param This Protocol instance pointer.
2105 @param Controller Handle of device to stop driver on.
2106 @param NumberOfChildren Number of Children in the ChildHandleBuffer.
2107 @param ChildHandleBuffer List of handles for the children we need to stop.
2109 @return EFI_SUCCESS Success.
2110 @return EFI_DEVICE_ERROR Fail.
2115 XhcDriverBindingStop (
2116 IN EFI_DRIVER_BINDING_PROTOCOL
*This
,
2117 IN EFI_HANDLE Controller
,
2118 IN UINTN NumberOfChildren
,
2119 IN EFI_HANDLE
*ChildHandleBuffer
2123 EFI_USB2_HC_PROTOCOL
*Usb2Hc
;
2124 EFI_PCI_IO_PROTOCOL
*PciIo
;
2125 USB_XHCI_INSTANCE
*Xhc
;
2129 // Test whether the Controller handler passed in is a valid
2130 // Usb controller handle that should be supported, if not,
2131 // return the error status directly
2133 Status
= gBS
->OpenProtocol (
2135 &gEfiUsb2HcProtocolGuid
,
2137 This
->DriverBindingHandle
,
2139 EFI_OPEN_PROTOCOL_GET_PROTOCOL
2142 if (EFI_ERROR (Status
)) {
2146 Status
= gBS
->UninstallProtocolInterface (
2148 &gEfiUsb2HcProtocolGuid
,
2152 if (EFI_ERROR (Status
)) {
2156 Xhc
= XHC_FROM_THIS (Usb2Hc
);
2160 // Stop AsyncRequest Polling timer then stop the XHCI driver
2161 // and uninstall the XHCI protocl.
2163 gBS
->SetTimer (Xhc
->PollTimer
, TimerCancel
, 0);
2166 // Disable the device slots occupied by these devices on its downstream ports.
2167 // Entry 0 is reserved.
2169 for (Index
= 0; Index
< 255; Index
++) {
2170 if (!Xhc
->UsbDevContext
[Index
+ 1].Enabled
||
2171 (Xhc
->UsbDevContext
[Index
+ 1].SlotId
== 0)) {
2174 if (Xhc
->HcCParams
.Data
.Csz
== 0) {
2175 XhcDisableSlotCmd (Xhc
, Xhc
->UsbDevContext
[Index
+ 1].SlotId
);
2177 XhcDisableSlotCmd64 (Xhc
, Xhc
->UsbDevContext
[Index
+ 1].SlotId
);
2181 if (Xhc
->PollTimer
!= NULL
) {
2182 gBS
->CloseEvent (Xhc
->PollTimer
);
2185 if (Xhc
->ExitBootServiceEvent
!= NULL
) {
2186 gBS
->CloseEvent (Xhc
->ExitBootServiceEvent
);
2189 XhcHaltHC (Xhc
, XHC_GENERIC_TIMEOUT
);
2190 XhcClearBiosOwnership (Xhc
);
2191 XhciDelAllAsyncIntTransfers (Xhc
);
2194 if (Xhc
->ControllerNameTable
) {
2195 FreeUnicodeStringTable (Xhc
->ControllerNameTable
);
2199 // Restore original PCI attributes
2203 EfiPciIoAttributeOperationSet
,
2204 Xhc
->OriginalPciAttributes
,
2208 gBS
->CloseProtocol (
2210 &gEfiPciIoProtocolGuid
,
2211 This
->DriverBindingHandle
,