2 USB Mouse Driver that manages USB mouse and produces Absolute Pointer Protocol.
4 Copyright (c) 2004 - 2012, 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.
15 #include "UsbMouseAbsolutePointer.h"
17 EFI_DRIVER_BINDING_PROTOCOL gUsbMouseAbsolutePointerDriverBinding
= {
18 USBMouseAbsolutePointerDriverBindingSupported
,
19 USBMouseAbsolutePointerDriverBindingStart
,
20 USBMouseAbsolutePointerDriverBindingStop
,
27 Entrypoint of USB Mouse Absolute Pointer Driver.
29 This function is the entrypoint of USB Mouse Driver. It installs Driver Binding
30 Protocols together with Component Name Protocols.
32 @param ImageHandle The firmware allocated handle for the EFI image.
33 @param SystemTable A pointer to the EFI System Table.
35 @retval EFI_SUCCESS The entry point is executed successfully.
40 USBMouseAbsolutePointerDriverBindingEntryPoint (
41 IN EFI_HANDLE ImageHandle
,
42 IN EFI_SYSTEM_TABLE
*SystemTable
47 Status
= EfiLibInstallDriverBindingComponentName2 (
50 &gUsbMouseAbsolutePointerDriverBinding
,
52 &gUsbMouseAbsolutePointerComponentName
,
53 &gUsbMouseAbsolutePointerComponentName2
55 ASSERT_EFI_ERROR (Status
);
62 Check whether USB Mouse Absolute Pointer Driver supports this device.
64 @param This The driver binding protocol.
65 @param Controller The controller handle to check.
66 @param RemainingDevicePath The remaining device path.
68 @retval EFI_SUCCESS The driver supports this controller.
69 @retval other This device isn't supported.
74 USBMouseAbsolutePointerDriverBindingSupported (
75 IN EFI_DRIVER_BINDING_PROTOCOL
*This
,
76 IN EFI_HANDLE Controller
,
77 IN EFI_DEVICE_PATH_PROTOCOL
*RemainingDevicePath
81 EFI_USB_IO_PROTOCOL
*UsbIo
;
83 Status
= gBS
->OpenProtocol (
85 &gEfiUsbIoProtocolGuid
,
87 This
->DriverBindingHandle
,
89 EFI_OPEN_PROTOCOL_BY_DRIVER
91 if (EFI_ERROR (Status
)) {
96 // Use the USB I/O Protocol interface to check whether Controller is
97 // a mouse device that can be managed by this driver.
100 if (!IsUsbMouse (UsbIo
)) {
101 Status
= EFI_UNSUPPORTED
;
106 &gEfiUsbIoProtocolGuid
,
107 This
->DriverBindingHandle
,
116 Starts the mouse device with this driver.
118 This function consumes USB I/O Portocol, intializes USB mouse device,
119 installs Absolute Pointer Protocol, and submits Asynchronous Interrupt
120 Transfer to manage the USB mouse device.
122 @param This The driver binding instance.
123 @param Controller Handle of device to bind driver to.
124 @param RemainingDevicePath Optional parameter use to pick a specific child
127 @retval EFI_SUCCESS This driver supports this device.
128 @retval EFI_UNSUPPORTED This driver does not support this device.
129 @retval EFI_DEVICE_ERROR This driver cannot be started due to device Error.
130 @retval EFI_OUT_OF_RESOURCES Can't allocate memory resources.
131 @retval EFI_ALREADY_STARTED This driver has been started.
136 USBMouseAbsolutePointerDriverBindingStart (
137 IN EFI_DRIVER_BINDING_PROTOCOL
*This
,
138 IN EFI_HANDLE Controller
,
139 IN EFI_DEVICE_PATH_PROTOCOL
*RemainingDevicePath
143 EFI_USB_IO_PROTOCOL
*UsbIo
;
144 USB_MOUSE_ABSOLUTE_POINTER_DEV
*UsbMouseAbsolutePointerDevice
;
145 UINT8 EndpointNumber
;
146 EFI_USB_ENDPOINT_DESCRIPTOR EndpointDescriptor
;
149 UINT8 PollingInterval
;
154 OldTpl
= gBS
->RaiseTPL (TPL_CALLBACK
);
156 // Open USB I/O Protocol
158 Status
= gBS
->OpenProtocol (
160 &gEfiUsbIoProtocolGuid
,
162 This
->DriverBindingHandle
,
164 EFI_OPEN_PROTOCOL_BY_DRIVER
166 if (EFI_ERROR (Status
)) {
170 UsbMouseAbsolutePointerDevice
= AllocateZeroPool (sizeof (USB_MOUSE_ABSOLUTE_POINTER_DEV
));
171 ASSERT (UsbMouseAbsolutePointerDevice
!= NULL
);
173 UsbMouseAbsolutePointerDevice
->UsbIo
= UsbIo
;
174 UsbMouseAbsolutePointerDevice
->Signature
= USB_MOUSE_ABSOLUTE_POINTER_DEV_SIGNATURE
;
177 // Get the Device Path Protocol on Controller's handle
179 Status
= gBS
->OpenProtocol (
181 &gEfiDevicePathProtocolGuid
,
182 (VOID
**) &UsbMouseAbsolutePointerDevice
->DevicePath
,
183 This
->DriverBindingHandle
,
185 EFI_OPEN_PROTOCOL_GET_PROTOCOL
188 if (EFI_ERROR (Status
)) {
193 // Report Status Code here since USB mouse will be detected next.
195 REPORT_STATUS_CODE_WITH_DEVICE_PATH (
197 (EFI_PERIPHERAL_MOUSE
| EFI_P_PC_PRESENCE_DETECT
),
198 UsbMouseDevice
->DevicePath
202 // Get interface & endpoint descriptor
204 UsbIo
->UsbGetInterfaceDescriptor (
206 &UsbMouseAbsolutePointerDevice
->InterfaceDescriptor
209 EndpointNumber
= UsbMouseAbsolutePointerDevice
->InterfaceDescriptor
.NumEndpoints
;
212 // Traverse endpoints to find interrupt endpoint
215 for (Index
= 0; Index
< EndpointNumber
; Index
++) {
216 UsbIo
->UsbGetEndpointDescriptor (
222 if ((EndpointDescriptor
.Attributes
& (BIT0
| BIT1
)) == USB_ENDPOINT_INTERRUPT
) {
224 // We only care interrupt endpoint here
226 CopyMem (&UsbMouseAbsolutePointerDevice
->IntEndpointDescriptor
, &EndpointDescriptor
, sizeof(EndpointDescriptor
));
234 // Report Status Code to indicate that there is no USB mouse
237 EFI_ERROR_CODE
| EFI_ERROR_MINOR
,,
238 (EFI_PERIPHERAL_MOUSE
| EFI_P_EC_NOT_DETECTED
)
241 // No interrupt endpoint found, then return unsupported.
243 Status
= EFI_UNSUPPORTED
;
248 // Report Status Code here since USB mouse has be detected.
250 REPORT_STATUS_CODE_WITH_DEVICE_PATH (
252 (EFI_PERIPHERAL_MOUSE
| EFI_P_PC_DETECTED
),
253 UsbMouseDevice
->DevicePath
256 Status
= InitializeUsbMouseDevice (UsbMouseAbsolutePointerDevice
);
257 if (EFI_ERROR (Status
)) {
259 // Fail to initialize USB mouse device.
261 REPORT_STATUS_CODE_WITH_DEVICE_PATH (
262 EFI_ERROR_CODE
| EFI_ERROR_MINOR
,
263 (EFI_PERIPHERAL_MOUSE
| EFI_P_EC_INTERFACE_ERROR
),
264 UsbMouseAbsolutePointerDevice
->DevicePath
271 // Initialize and install EFI Absolute Pointer Protocol.
273 UsbMouseAbsolutePointerDevice
->AbsolutePointerProtocol
.GetState
= GetMouseAbsolutePointerState
;
274 UsbMouseAbsolutePointerDevice
->AbsolutePointerProtocol
.Reset
= UsbMouseAbsolutePointerReset
;
275 UsbMouseAbsolutePointerDevice
->AbsolutePointerProtocol
.Mode
= &UsbMouseAbsolutePointerDevice
->Mode
;
277 Status
= gBS
->CreateEvent (
280 UsbMouseAbsolutePointerWaitForInput
,
281 UsbMouseAbsolutePointerDevice
,
282 &((UsbMouseAbsolutePointerDevice
->AbsolutePointerProtocol
).WaitForInput
)
284 if (EFI_ERROR (Status
)) {
288 Status
= gBS
->InstallProtocolInterface (
290 &gEfiAbsolutePointerProtocolGuid
,
291 EFI_NATIVE_INTERFACE
,
292 &UsbMouseAbsolutePointerDevice
->AbsolutePointerProtocol
295 if (EFI_ERROR (Status
)) {
300 // The next step would be submitting Asynchronous Interrupt Transfer on this mouse device.
301 // After that we will be able to get key data from it. Thus this is deemed as
302 // the enable action of the mouse, so report status code accordingly.
304 REPORT_STATUS_CODE_WITH_DEVICE_PATH (
306 (EFI_PERIPHERAL_MOUSE
| EFI_P_PC_ENABLE
),
307 UsbMouseAbsolutePointerDevice
->DevicePath
311 // Submit Asynchronous Interrupt Transfer to manage this device.
313 EndpointAddr
= UsbMouseAbsolutePointerDevice
->IntEndpointDescriptor
.EndpointAddress
;
314 PollingInterval
= UsbMouseAbsolutePointerDevice
->IntEndpointDescriptor
.Interval
;
315 PacketSize
= (UINT8
) (UsbMouseAbsolutePointerDevice
->IntEndpointDescriptor
.MaxPacketSize
);
317 Status
= UsbIo
->UsbAsyncInterruptTransfer (
323 OnMouseInterruptComplete
,
324 UsbMouseAbsolutePointerDevice
327 if (EFI_ERROR (Status
)) {
329 // If submit error, uninstall that interface
331 gBS
->UninstallProtocolInterface (
333 &gEfiAbsolutePointerProtocolGuid
,
334 &UsbMouseAbsolutePointerDevice
->AbsolutePointerProtocol
339 UsbMouseAbsolutePointerDevice
->ControllerNameTable
= NULL
;
342 gUsbMouseAbsolutePointerComponentName
.SupportedLanguages
,
343 &UsbMouseAbsolutePointerDevice
->ControllerNameTable
,
344 L
"Generic Usb Mouse Absolute Pointer",
349 gUsbMouseAbsolutePointerComponentName2
.SupportedLanguages
,
350 &UsbMouseAbsolutePointerDevice
->ControllerNameTable
,
351 L
"Generic Usb Mouse Absolute Pointer",
355 gBS
->RestoreTPL (OldTpl
);
362 if (EFI_ERROR (Status
)) {
365 &gEfiUsbIoProtocolGuid
,
366 This
->DriverBindingHandle
,
370 if (UsbMouseAbsolutePointerDevice
!= NULL
) {
371 if ((UsbMouseAbsolutePointerDevice
->AbsolutePointerProtocol
).WaitForInput
!= NULL
) {
372 gBS
->CloseEvent ((UsbMouseAbsolutePointerDevice
->AbsolutePointerProtocol
).WaitForInput
);
375 FreePool (UsbMouseAbsolutePointerDevice
);
376 UsbMouseAbsolutePointerDevice
= NULL
;
381 gBS
->RestoreTPL (OldTpl
);
388 Stop the USB mouse device handled by this driver.
390 @param This The driver binding protocol.
391 @param Controller The controller to release.
392 @param NumberOfChildren The number of handles in ChildHandleBuffer.
393 @param ChildHandleBuffer The array of child handle.
395 @retval EFI_SUCCESS The device was stopped.
396 @retval EFI_UNSUPPORTED Absolute Pointer Protocol is not installed on Controller.
397 @retval Others Fail to uninstall protocols attached on the device.
402 USBMouseAbsolutePointerDriverBindingStop (
403 IN EFI_DRIVER_BINDING_PROTOCOL
*This
,
404 IN EFI_HANDLE Controller
,
405 IN UINTN NumberOfChildren
,
406 IN EFI_HANDLE
*ChildHandleBuffer
410 USB_MOUSE_ABSOLUTE_POINTER_DEV
*UsbMouseAbsolutePointerDevice
;
411 EFI_ABSOLUTE_POINTER_PROTOCOL
*AbsolutePointerProtocol
;
412 EFI_USB_IO_PROTOCOL
*UsbIo
;
414 Status
= gBS
->OpenProtocol (
416 &gEfiAbsolutePointerProtocolGuid
,
417 (VOID
**) &AbsolutePointerProtocol
,
418 This
->DriverBindingHandle
,
420 EFI_OPEN_PROTOCOL_GET_PROTOCOL
423 if (EFI_ERROR (Status
)) {
424 return EFI_UNSUPPORTED
;
427 UsbMouseAbsolutePointerDevice
= USB_MOUSE_ABSOLUTE_POINTER_DEV_FROM_MOUSE_PROTOCOL (AbsolutePointerProtocol
);
429 UsbIo
= UsbMouseAbsolutePointerDevice
->UsbIo
;
432 // The key data input from this device will be disabled.
434 REPORT_STATUS_CODE_WITH_DEVICE_PATH (
436 (EFI_PERIPHERAL_MOUSE
| EFI_P_PC_DISABLE
),
437 UsbMouseAbsolutePointerDevice
->DevicePath
441 // Delete the Asynchronous Interrupt Transfer from this device
443 UsbIo
->UsbAsyncInterruptTransfer (
445 UsbMouseAbsolutePointerDevice
->IntEndpointDescriptor
.EndpointAddress
,
447 UsbMouseAbsolutePointerDevice
->IntEndpointDescriptor
.Interval
,
453 Status
= gBS
->UninstallProtocolInterface (
455 &gEfiAbsolutePointerProtocolGuid
,
456 &UsbMouseAbsolutePointerDevice
->AbsolutePointerProtocol
458 if (EFI_ERROR (Status
)) {
464 &gEfiUsbIoProtocolGuid
,
465 This
->DriverBindingHandle
,
470 // Free all resources.
472 gBS
->CloseEvent (UsbMouseAbsolutePointerDevice
->AbsolutePointerProtocol
.WaitForInput
);
474 if (UsbMouseAbsolutePointerDevice
->DelayedRecoveryEvent
!= NULL
) {
475 gBS
->CloseEvent (UsbMouseAbsolutePointerDevice
->DelayedRecoveryEvent
);
476 UsbMouseAbsolutePointerDevice
->DelayedRecoveryEvent
= NULL
;
479 if (UsbMouseAbsolutePointerDevice
->ControllerNameTable
!= NULL
) {
480 FreeUnicodeStringTable (UsbMouseAbsolutePointerDevice
->ControllerNameTable
);
483 FreePool (UsbMouseAbsolutePointerDevice
);
491 Uses USB I/O to check whether the device is a USB mouse device.
493 @param UsbIo Pointer to a USB I/O protocol instance.
495 @retval TRUE Device is a USB mouse device.
496 @retval FALSE Device is a not USB mouse device.
501 IN EFI_USB_IO_PROTOCOL
*UsbIo
505 EFI_USB_INTERFACE_DESCRIPTOR InterfaceDescriptor
;
508 // Get the default interface descriptor
510 Status
= UsbIo
->UsbGetInterfaceDescriptor (
515 if (EFI_ERROR (Status
)) {
519 if ((InterfaceDescriptor
.InterfaceClass
== CLASS_HID
) &&
520 (InterfaceDescriptor
.InterfaceSubClass
== SUBCLASS_BOOT
) &&
521 (InterfaceDescriptor
.InterfaceProtocol
== PROTOCOL_MOUSE
)
531 Initialize the USB mouse device.
533 This function retrieves and parses HID report descriptor, and
534 initializes state of USB_MOUSE_ABSOLUTE_POINTER_DEV. Then it sets indefinite idle
535 rate for the device. Finally it creates event for delayed recovery,
536 which deals with device error.
538 @param UsbMouseAbsolutePointerDev Device instance to be initialized.
540 @retval EFI_SUCCESS USB mouse device successfully initialized.
541 @retval EFI_UNSUPPORTED HID descriptor type is not report descriptor.
542 @retval Other USB mouse device was not initialized successfully.
546 InitializeUsbMouseDevice (
547 IN USB_MOUSE_ABSOLUTE_POINTER_DEV
*UsbMouseAbsolutePointerDev
550 EFI_USB_IO_PROTOCOL
*UsbIo
;
553 EFI_USB_HID_DESCRIPTOR
*MouseHidDesc
;
555 EFI_USB_CONFIG_DESCRIPTOR ConfigDesc
;
557 UINT32 TransferResult
;
562 UsbIo
= UsbMouseAbsolutePointerDev
->UsbIo
;
565 // Get the current configuration descriptor. Note that it doesn't include other descriptors.
567 Status
= UsbIo
->UsbGetConfigDescriptor (
571 if (EFI_ERROR (Status
)) {
576 // By issuing Get_Descriptor(Configuration) request with total length, we get the Configuration descriptor,
577 // all Interface descriptors, all Endpoint descriptors, and the HID descriptor for each interface.
579 Buf
= AllocateZeroPool (ConfigDesc
.TotalLength
);
581 return EFI_OUT_OF_RESOURCES
;
584 Status
= UsbGetDescriptor (
586 (UINT16
)((USB_DESC_TYPE_CONFIG
<< 8) | (ConfigDesc
.ConfigurationValue
- 1)),
588 ConfigDesc
.TotalLength
,
592 if (EFI_ERROR (Status
)) {
599 Head
= (USB_DESC_HEAD
*)Buf
;
603 // Get HID descriptor from the receipt of Get_Descriptor(Configuration) request.
604 // This algorithm is based on the fact that the HID descriptor shall be interleaved
605 // between the interface and endpoint descriptors for HID interfaces.
607 while (Total
< ConfigDesc
.TotalLength
) {
608 if (Head
->Type
== USB_DESC_TYPE_INTERFACE
) {
609 if ((((USB_INTERFACE_DESCRIPTOR
*)Head
)->InterfaceNumber
== UsbMouseAbsolutePointerDev
->InterfaceDescriptor
.InterfaceNumber
) &&
610 (((USB_INTERFACE_DESCRIPTOR
*)Head
)->AlternateSetting
== UsbMouseAbsolutePointerDev
->InterfaceDescriptor
.AlternateSetting
)) {
614 if (Start
&& (Head
->Type
== USB_DESC_TYPE_ENDPOINT
)) {
617 if (Start
&& (Head
->Type
== USB_DESC_TYPE_HID
)) {
618 MouseHidDesc
= (EFI_USB_HID_DESCRIPTOR
*)Head
;
621 Total
= Total
+ (UINT16
)Head
->Len
;
622 Head
= (USB_DESC_HEAD
*)((UINT8
*)Buf
+ Total
);
625 if (MouseHidDesc
== NULL
) {
627 return EFI_UNSUPPORTED
;
631 // Get report descriptor
633 if (MouseHidDesc
->HidClassDesc
[0].DescriptorType
!= USB_DESC_TYPE_REPORT
) {
635 return EFI_UNSUPPORTED
;
638 ReportDesc
= AllocateZeroPool (MouseHidDesc
->HidClassDesc
[0].DescriptorLength
);
639 ASSERT (ReportDesc
!= NULL
);
641 Status
= UsbGetReportDescriptor (
643 UsbMouseAbsolutePointerDev
->InterfaceDescriptor
.InterfaceNumber
,
644 MouseHidDesc
->HidClassDesc
[0].DescriptorLength
,
648 if (EFI_ERROR (Status
)) {
650 FreePool (ReportDesc
);
655 // Parse report descriptor
657 Status
= ParseMouseReportDescriptor (
658 UsbMouseAbsolutePointerDev
,
660 MouseHidDesc
->HidClassDesc
[0].DescriptorLength
663 if (EFI_ERROR (Status
)) {
665 FreePool (ReportDesc
);
669 UsbMouseAbsolutePointerDev
->Mode
.AbsoluteMaxX
= 1024;
670 UsbMouseAbsolutePointerDev
->Mode
.AbsoluteMaxY
= 1024;
671 UsbMouseAbsolutePointerDev
->Mode
.AbsoluteMaxZ
= 0;
672 UsbMouseAbsolutePointerDev
->Mode
.AbsoluteMinX
= 0;
673 UsbMouseAbsolutePointerDev
->Mode
.AbsoluteMinY
= 0;
674 UsbMouseAbsolutePointerDev
->Mode
.AbsoluteMinZ
= 0;
675 UsbMouseAbsolutePointerDev
->Mode
.Attributes
= 0x3;
678 // Set boot protocol for the USB mouse.
679 // This driver only supports boot protocol.
681 UsbGetProtocolRequest (
683 UsbMouseAbsolutePointerDev
->InterfaceDescriptor
.InterfaceNumber
,
686 if (Protocol
!= BOOT_PROTOCOL
) {
687 Status
= UsbSetProtocolRequest (
689 UsbMouseAbsolutePointerDev
->InterfaceDescriptor
.InterfaceNumber
,
693 if (EFI_ERROR (Status
)) {
695 FreePool (ReportDesc
);
701 FreePool (ReportDesc
);
704 // Create event for delayed recovery, which deals with device error.
706 if (UsbMouseAbsolutePointerDev
->DelayedRecoveryEvent
!= NULL
) {
707 gBS
->CloseEvent (UsbMouseAbsolutePointerDev
->DelayedRecoveryEvent
);
708 UsbMouseAbsolutePointerDev
->DelayedRecoveryEvent
= 0;
712 EVT_TIMER
| EVT_NOTIFY_SIGNAL
,
714 USBMouseRecoveryHandler
,
715 UsbMouseAbsolutePointerDev
,
716 &UsbMouseAbsolutePointerDev
->DelayedRecoveryEvent
724 Handler function for USB mouse's asynchronous interrupt transfer.
726 This function is the handler function for USB mouse's asynchronous interrupt transfer
727 to manage the mouse. It parses data returned from asynchronous interrupt transfer, and
728 get button and movement state.
730 @param Data A pointer to a buffer that is filled with key data which is
731 retrieved via asynchronous interrupt transfer.
732 @param DataLength Indicates the size of the data buffer.
733 @param Context Pointing to USB_KB_DEV instance.
734 @param Result Indicates the result of the asynchronous interrupt transfer.
736 @retval EFI_SUCCESS Asynchronous interrupt transfer is handled successfully.
737 @retval EFI_DEVICE_ERROR Hardware error occurs.
742 OnMouseInterruptComplete (
749 USB_MOUSE_ABSOLUTE_POINTER_DEV
*UsbMouseAbsolutePointerDevice
;
750 EFI_USB_IO_PROTOCOL
*UsbIo
;
754 UsbMouseAbsolutePointerDevice
= (USB_MOUSE_ABSOLUTE_POINTER_DEV
*) Context
;
755 UsbIo
= UsbMouseAbsolutePointerDevice
->UsbIo
;
757 if (Result
!= EFI_USB_NOERROR
) {
759 // Some errors happen during the process
761 REPORT_STATUS_CODE_WITH_DEVICE_PATH (
762 EFI_ERROR_CODE
| EFI_ERROR_MINOR
,
763 (EFI_PERIPHERAL_MOUSE
| EFI_P_EC_INPUT_ERROR
),
764 UsbMouseAbsolutePointerDevice
->DevicePath
767 if ((Result
& EFI_USB_ERR_STALL
) == EFI_USB_ERR_STALL
) {
768 EndpointAddr
= UsbMouseAbsolutePointerDevice
->IntEndpointDescriptor
.EndpointAddress
;
770 UsbClearEndpointHalt (
778 // Delete & Submit this interrupt again
779 // Handler of DelayedRecoveryEvent triggered by timer will re-submit the interrupt.
781 UsbIo
->UsbAsyncInterruptTransfer (
783 UsbMouseAbsolutePointerDevice
->IntEndpointDescriptor
.EndpointAddress
,
791 // EFI_USB_INTERRUPT_DELAY is defined in USB standard for error handling.
794 UsbMouseAbsolutePointerDevice
->DelayedRecoveryEvent
,
796 EFI_USB_INTERRUPT_DELAY
798 return EFI_DEVICE_ERROR
;
802 // If no error and no data, just return EFI_SUCCESS.
804 if (DataLength
== 0 || Data
== NULL
) {
808 UsbMouseAbsolutePointerDevice
->StateChanged
= TRUE
;
812 // USB HID Specification specifies following data format:
813 // Byte Bits Description
817 // 4 to 7 Device-specific
818 // 1 0 to 7 X displacement
819 // 2 0 to 7 Y displacement
820 // 3 to n 0 to 7 Device specific (optional)
822 UsbMouseAbsolutePointerDevice
->State
.CurrentX
+= *((INT8
*) Data
+ 1);
823 UsbMouseAbsolutePointerDevice
->State
.CurrentY
+= *((INT8
*) Data
+ 2);
825 if (DataLength
> 3) {
826 UsbMouseAbsolutePointerDevice
->State
.CurrentZ
+= *((INT8
*) Data
+ 3);
828 UsbMouseAbsolutePointerDevice
->State
.ActiveButtons
= *(UINT8
*) Data
& (BIT0
| BIT1
);
834 Retrieves the current state of a pointer device.
836 @param This A pointer to the EFI_ABSOLUTE_POINTER_PROTOCOL instance.
837 @param MouseState A pointer to the state information on the pointer device.
839 @retval EFI_SUCCESS The state of the pointer device was returned in State.
840 @retval EFI_NOT_READY The state of the pointer device has not changed since the last call to
842 @retval EFI_DEVICE_ERROR A device error occurred while attempting to retrieve the pointer device's
844 @retval EFI_INVALID_PARAMETER State is NULL.
849 GetMouseAbsolutePointerState (
850 IN EFI_ABSOLUTE_POINTER_PROTOCOL
*This
,
851 OUT EFI_ABSOLUTE_POINTER_STATE
*State
854 USB_MOUSE_ABSOLUTE_POINTER_DEV
*MouseAbsolutePointerDev
;
857 return EFI_INVALID_PARAMETER
;
860 MouseAbsolutePointerDev
= USB_MOUSE_ABSOLUTE_POINTER_DEV_FROM_MOUSE_PROTOCOL (This
);
862 if (!MouseAbsolutePointerDev
->StateChanged
) {
863 return EFI_NOT_READY
;
867 // Retrieve mouse state from USB_MOUSE_ABSOLUTE_POINTER_DEV,
868 // which was filled by OnMouseInterruptComplete()
872 &MouseAbsolutePointerDev
->State
,
873 sizeof (EFI_ABSOLUTE_POINTER_STATE
)
877 // Clear previous move state
879 MouseAbsolutePointerDev
->State
.CurrentX
= 0;
880 MouseAbsolutePointerDev
->State
.CurrentY
= 0;
881 MouseAbsolutePointerDev
->State
.CurrentZ
= 0;
882 MouseAbsolutePointerDev
->State
.ActiveButtons
= 0;
884 MouseAbsolutePointerDev
->StateChanged
= FALSE
;
891 Resets the pointer device hardware.
893 @param This A pointer to the EFI_ABSOLUTE_POINTER_PROTOCOL instance.
894 @param ExtendedVerification Indicates that the driver may perform a more exhaustive
895 verification operation of the device during reset.
897 @retval EFI_SUCCESS The device was reset.
898 @retval EFI_DEVICE_ERROR The device is not functioning correctly and could not be reset.
903 UsbMouseAbsolutePointerReset (
904 IN EFI_ABSOLUTE_POINTER_PROTOCOL
*This
,
905 IN BOOLEAN ExtendedVerification
908 USB_MOUSE_ABSOLUTE_POINTER_DEV
*UsbMouseAbsolutePointerDevice
;
910 UsbMouseAbsolutePointerDevice
= USB_MOUSE_ABSOLUTE_POINTER_DEV_FROM_MOUSE_PROTOCOL (This
);
912 REPORT_STATUS_CODE_WITH_DEVICE_PATH (
914 (EFI_PERIPHERAL_MOUSE
| EFI_P_PC_RESET
),
915 UsbMouseAbsolutePointerDevice
->DevicePath
919 // Clear mouse state.
922 &UsbMouseAbsolutePointerDevice
->State
,
923 sizeof (EFI_ABSOLUTE_POINTER_STATE
)
925 UsbMouseAbsolutePointerDevice
->StateChanged
= FALSE
;
931 Event notification function for EFI_ABSOLUTE_POINTER_PROTOCOL.WaitForInput event.
933 @param Event Event to be signaled when there's input from mouse.
934 @param Context Points to USB_MOUSE_ABSOLUTE_POINTER_DEV instance.
939 UsbMouseAbsolutePointerWaitForInput (
944 USB_MOUSE_ABSOLUTE_POINTER_DEV
*UsbMouseAbsolutePointerDev
;
946 UsbMouseAbsolutePointerDev
= (USB_MOUSE_ABSOLUTE_POINTER_DEV
*) Context
;
949 // If there's input from mouse, signal the event.
951 if (UsbMouseAbsolutePointerDev
->StateChanged
) {
952 gBS
->SignalEvent (Event
);
957 Handler for Delayed Recovery event.
959 This function is the handler for Delayed Recovery event triggered
961 After a device error occurs, the event would be triggered
962 with interval of EFI_USB_INTERRUPT_DELAY. EFI_USB_INTERRUPT_DELAY
963 is defined in USB standard for error handling.
965 @param Event The Delayed Recovery event.
966 @param Context Points to the USB_MOUSE_ABSOLUTE_POINTER_DEV instance.
971 USBMouseRecoveryHandler (
976 USB_MOUSE_ABSOLUTE_POINTER_DEV
*UsbMouseAbsolutePointerDev
;
977 EFI_USB_IO_PROTOCOL
*UsbIo
;
979 UsbMouseAbsolutePointerDev
= (USB_MOUSE_ABSOLUTE_POINTER_DEV
*) Context
;
981 UsbIo
= UsbMouseAbsolutePointerDev
->UsbIo
;
984 // Re-submit Asynchronous Interrupt Transfer for recovery.
986 UsbIo
->UsbAsyncInterruptTransfer (
988 UsbMouseAbsolutePointerDev
->IntEndpointDescriptor
.EndpointAddress
,
990 UsbMouseAbsolutePointerDev
->IntEndpointDescriptor
.Interval
,
991 UsbMouseAbsolutePointerDev
->IntEndpointDescriptor
.MaxPacketSize
,
992 OnMouseInterruptComplete
,
993 UsbMouseAbsolutePointerDev