2 * Copyright (c) 2009, Citrix Systems, Inc.
3 * Copyright (c) 2010, Microsoft Corporation.
4 * Copyright (c) 2011, Novell Inc.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 #include <linux/init.h>
16 #include <linux/module.h>
17 #include <linux/delay.h>
18 #include <linux/device.h>
19 #include <linux/workqueue.h>
20 #include <linux/sched.h>
21 #include <linux/wait.h>
22 #include <linux/input.h>
23 #include <linux/hid.h>
24 #include <linux/hiddev.h>
25 #include <linux/pci.h>
26 #include <linux/dmi.h>
27 #include <linux/delay.h>
31 #include "version_info.h"
33 #include "vmbus_api.h"
35 #include "vmbus_packet_format.h"
41 struct hv_input_dev_info {
42 unsigned short vendor;
43 unsigned short product;
44 unsigned short version;
48 /* Represents the input vsc driver */
49 /* FIXME - can be removed entirely */
50 struct mousevsc_drv_obj {
51 struct hv_driver Base;
55 /* The maximum size of a synthetic input message. */
56 #define SYNTHHID_MAX_INPUT_REPORT_SIZE 16
62 * Beta, RC < 2008/1/22 1,0
65 #define SYNTHHID_INPUT_VERSION_MAJOR 2
66 #define SYNTHHID_INPUT_VERSION_MINOR 0
67 #define SYNTHHID_INPUT_VERSION (SYNTHHID_INPUT_VERSION_MINOR | \
68 (SYNTHHID_INPUT_VERSION_MAJOR << 16))
73 * Message types in the synthetic input protocol
75 enum synthhid_msg_type {
76 SynthHidProtocolRequest,
77 SynthHidProtocolResponse,
78 SynthHidInitialDeviceInfo,
79 SynthHidInitialDeviceInfoAck,
85 * Basic message structures.
87 struct synthhid_msg_hdr {
88 enum synthhid_msg_type type;
93 struct synthhid_msg_hdr header;
94 char data[1]; /* Enclosed message */
97 union synthhid_version {
108 struct synthhid_protocol_request {
109 struct synthhid_msg_hdr header;
110 union synthhid_version version_requested;
113 struct synthhid_protocol_response {
114 struct synthhid_msg_hdr header;
115 union synthhid_version version_requested;
116 unsigned char approved;
119 struct synthhid_device_info {
120 struct synthhid_msg_hdr header;
121 struct hv_input_dev_info hid_dev_info;
122 struct hid_descriptor hid_descriptor;
125 struct synthhid_device_info_ack {
126 struct synthhid_msg_hdr header;
127 unsigned char reserved;
130 struct synthhid_input_report {
131 struct synthhid_msg_hdr header;
137 #define INPUTVSC_SEND_RING_BUFFER_SIZE 10*PAGE_SIZE
138 #define INPUTVSC_RECV_RING_BUFFER_SIZE 10*PAGE_SIZE
140 #define NBITS(x) (((x)/BITS_PER_LONG)+1)
142 enum pipe_prot_msg_type {
143 PipeMessageInvalid = 0,
149 struct pipe_prt_msg {
150 enum pipe_prot_msg_type type;
158 struct mousevsc_prt_msg {
159 enum pipe_prot_msg_type type;
162 struct synthhid_protocol_request request;
163 struct synthhid_protocol_response response;
164 struct synthhid_device_info_ack ack;
169 * Represents an mousevsc device
171 struct mousevsc_dev {
172 struct hv_device *Device;
173 /* 0 indicates the device is being destroyed */
175 int NumOutstandingRequests;
176 unsigned char bInitializeComplete;
177 struct mousevsc_prt_msg ProtocolReq;
178 struct mousevsc_prt_msg ProtocolResp;
179 /* Synchronize the request/response if needed */
180 wait_queue_head_t ProtocolWaitEvent;
181 wait_queue_head_t DeviceInfoWaitEvent;
182 int protocol_wait_condition;
183 int device_wait_condition;
184 int DeviceInfoStatus;
186 struct hid_descriptor *HidDesc;
187 unsigned char *ReportDesc;
189 struct hv_input_dev_info hid_dev_info;
193 static const char *driver_name = "mousevsc";
195 /* {CFA8B69E-5B4A-4cc0-B98B-8BA1A1F3F95A} */
196 static const struct hv_guid mouse_guid = {
197 .data = {0x9E, 0xB6, 0xA8, 0xCF, 0x4A, 0x5B, 0xc0, 0x4c,
198 0xB9, 0x8B, 0x8B, 0xA1, 0xA1, 0xF3, 0xF9, 0x5A}
201 static void deviceinfo_callback(struct hv_device *dev, struct hv_input_dev_info *info);
202 static void inputreport_callback(struct hv_device *dev, void *packet, u32 len);
203 static void reportdesc_callback(struct hv_device *dev, void *packet, u32 len);
205 static struct mousevsc_dev *AllocInputDevice(struct hv_device *Device)
207 struct mousevsc_dev *inputDevice;
209 inputDevice = kzalloc(sizeof(struct mousevsc_dev), GFP_KERNEL);
215 * Set to 2 to allow both inbound and outbound traffics
216 * (ie GetInputDevice() and MustGetInputDevice()) to proceed.
218 atomic_cmpxchg(&inputDevice->RefCount, 0, 2);
220 inputDevice->Device = Device;
221 Device->ext = inputDevice;
226 static void FreeInputDevice(struct mousevsc_dev *Device)
228 WARN_ON(atomic_read(&Device->RefCount) == 0);
233 * Get the inputdevice object if exists and its refcount > 1
235 static struct mousevsc_dev *GetInputDevice(struct hv_device *Device)
237 struct mousevsc_dev *inputDevice;
239 inputDevice = (struct mousevsc_dev *)Device->ext;
243 * This sure isn't a valid thing to print for debugging, no matter
244 * what the intention is...
246 * printk(KERN_ERR "-------------------------> REFCOUNT = %d",
247 * inputDevice->RefCount);
250 if (inputDevice && atomic_read(&inputDevice->RefCount) > 1)
251 atomic_inc(&inputDevice->RefCount);
259 * Get the inputdevice object iff exists and its refcount > 0
261 static struct mousevsc_dev *MustGetInputDevice(struct hv_device *Device)
263 struct mousevsc_dev *inputDevice;
265 inputDevice = (struct mousevsc_dev *)Device->ext;
267 if (inputDevice && atomic_read(&inputDevice->RefCount))
268 atomic_inc(&inputDevice->RefCount);
275 static void PutInputDevice(struct hv_device *Device)
277 struct mousevsc_dev *inputDevice;
279 inputDevice = (struct mousevsc_dev *)Device->ext;
281 atomic_dec(&inputDevice->RefCount);
285 * Drop ref count to 1 to effectively disable GetInputDevice()
287 static struct mousevsc_dev *ReleaseInputDevice(struct hv_device *Device)
289 struct mousevsc_dev *inputDevice;
291 inputDevice = (struct mousevsc_dev *)Device->ext;
293 /* Busy wait until the ref drop to 2, then set it to 1 */
294 while (atomic_cmpxchg(&inputDevice->RefCount, 2, 1) != 2)
301 * Drop ref count to 0. No one can use InputDevice object.
303 static struct mousevsc_dev *FinalReleaseInputDevice(struct hv_device *Device)
305 struct mousevsc_dev *inputDevice;
307 inputDevice = (struct mousevsc_dev *)Device->ext;
309 /* Busy wait until the ref drop to 1, then set it to 0 */
310 while (atomic_cmpxchg(&inputDevice->RefCount, 1, 0) != 1)
317 static void MousevscOnSendCompletion(struct hv_device *Device, struct vmpacket_descriptor *Packet)
319 struct mousevsc_dev *inputDevice;
322 inputDevice = MustGetInputDevice(Device);
324 pr_err("unable to get input device...device being destroyed?");
328 request = (void *)(unsigned long)Packet->trans_id;
330 if (request == &inputDevice->ProtocolReq) {
332 /* Shouldn't we be doing something here? */
335 PutInputDevice(Device);
338 static void MousevscOnReceiveDeviceInfo(struct mousevsc_dev *InputDevice, struct synthhid_device_info *DeviceInfo)
341 struct hid_descriptor *desc;
342 struct mousevsc_prt_msg ack;
344 /* Assume success for now */
345 InputDevice->DeviceInfoStatus = 0;
347 /* Save the device attr */
348 memcpy(&InputDevice->hid_dev_info, &DeviceInfo->hid_dev_info, sizeof(struct hv_input_dev_info));
350 /* Save the hid desc */
351 desc = &DeviceInfo->hid_descriptor;
352 WARN_ON(desc->bLength > 0);
354 InputDevice->HidDesc = kzalloc(desc->bLength, GFP_KERNEL);
356 if (!InputDevice->HidDesc) {
357 pr_err("unable to allocate hid descriptor - size %d", desc->bLength);
361 memcpy(InputDevice->HidDesc, desc, desc->bLength);
363 /* Save the report desc */
364 InputDevice->ReportDescSize = desc->desc[0].wDescriptorLength;
365 InputDevice->ReportDesc = kzalloc(InputDevice->ReportDescSize,
368 if (!InputDevice->ReportDesc) {
369 pr_err("unable to allocate report descriptor - size %d",
370 InputDevice->ReportDescSize);
374 memcpy(InputDevice->ReportDesc,
375 ((unsigned char *)desc) + desc->bLength,
376 desc->desc[0].wDescriptorLength);
379 memset(&ack, 0, sizeof(struct mousevsc_prt_msg));
381 ack.type = PipeMessageData;
382 ack.size = sizeof(struct synthhid_device_info_ack);
384 ack.ack.header.type = SynthHidInitialDeviceInfoAck;
385 ack.ack.header.size = 1;
386 ack.ack.reserved = 0;
388 ret = vmbus_sendpacket(InputDevice->Device->channel,
390 sizeof(struct pipe_prt_msg) - sizeof(unsigned char) +
391 sizeof(struct synthhid_device_info_ack),
394 VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
396 pr_err("unable to send synthhid device info ack - ret %d",
401 InputDevice->device_wait_condition = 1;
402 wake_up(&InputDevice->DeviceInfoWaitEvent);
407 kfree(InputDevice->HidDesc);
408 InputDevice->HidDesc = NULL;
410 kfree(InputDevice->ReportDesc);
411 InputDevice->ReportDesc = NULL;
413 InputDevice->DeviceInfoStatus = -1;
414 InputDevice->device_wait_condition = 1;
415 wake_up(&InputDevice->DeviceInfoWaitEvent);
418 static void MousevscOnReceiveInputReport(struct mousevsc_dev *InputDevice, struct synthhid_input_report *InputReport)
420 struct mousevsc_drv_obj *inputDriver;
422 if (!InputDevice->bInitializeComplete) {
423 pr_info("Initialization incomplete...ignoring InputReport msg");
427 inputDriver = (struct mousevsc_drv_obj *)InputDevice->Device->drv;
429 inputreport_callback(InputDevice->Device,
431 InputReport->header.size);
434 static void MousevscOnReceive(struct hv_device *Device, struct vmpacket_descriptor *Packet)
436 struct pipe_prt_msg *pipeMsg;
437 struct synthhid_msg *hidMsg;
438 struct mousevsc_dev *inputDevice;
440 inputDevice = MustGetInputDevice(Device);
442 pr_err("unable to get input device...device being destroyed?");
446 pipeMsg = (struct pipe_prt_msg *)((unsigned long)Packet + (Packet->offset8 << 3));
448 if (pipeMsg->type != PipeMessageData) {
449 pr_err("unknown pipe msg type - type %d len %d",
450 pipeMsg->type, pipeMsg->size);
451 PutInputDevice(Device);
455 hidMsg = (struct synthhid_msg *)&pipeMsg->data[0];
457 switch (hidMsg->header.type) {
458 case SynthHidProtocolResponse:
459 memcpy(&inputDevice->ProtocolResp, pipeMsg,
460 pipeMsg->size + sizeof(struct pipe_prt_msg) -
461 sizeof(unsigned char));
462 inputDevice->protocol_wait_condition = 1;
463 wake_up(&inputDevice->ProtocolWaitEvent);
466 case SynthHidInitialDeviceInfo:
467 WARN_ON(pipeMsg->size >= sizeof(struct hv_input_dev_info));
470 * Parse out the device info into device attr,
471 * hid desc and report desc
473 MousevscOnReceiveDeviceInfo(inputDevice,
474 (struct synthhid_device_info *)&pipeMsg->data[0]);
476 case SynthHidInputReport:
477 MousevscOnReceiveInputReport(inputDevice,
478 (struct synthhid_input_report *)&pipeMsg->data[0]);
482 pr_err("unsupported hid msg type - type %d len %d",
483 hidMsg->header.type, hidMsg->header.size);
487 PutInputDevice(Device);
490 static void MousevscOnChannelCallback(void *Context)
492 const int packetSize = 0x100;
494 struct hv_device *device = (struct hv_device *)Context;
495 struct mousevsc_dev *inputDevice;
499 unsigned char packet[packetSize];
500 struct vmpacket_descriptor *desc;
501 unsigned char *buffer = packet;
502 int bufferlen = packetSize;
504 inputDevice = MustGetInputDevice(device);
507 pr_err("unable to get input device...device being destroyed?");
512 ret = vmbus_recvpacket_raw(device->channel, buffer, bufferlen, &bytesRecvd, &requestId);
515 if (bytesRecvd > 0) {
516 desc = (struct vmpacket_descriptor *)buffer;
518 switch (desc->type) {
520 MousevscOnSendCompletion(device,
524 case VM_PKT_DATA_INBAND:
525 MousevscOnReceive(device, desc);
529 pr_err("unhandled packet type %d, tid %llx len %d\n",
537 if (bufferlen > packetSize) {
541 bufferlen = packetSize;
545 * pr_debug("nothing else to read...");
548 if (bufferlen > packetSize) {
552 bufferlen = packetSize;
556 } else if (ret == -2) {
557 /* Handle large packet */
558 bufferlen = bytesRecvd;
559 buffer = kzalloc(bytesRecvd, GFP_KERNEL);
561 if (buffer == NULL) {
563 bufferlen = packetSize;
565 /* Try again next time around */
566 pr_err("unable to allocate buffer of size %d!",
573 PutInputDevice(device);
578 static int MousevscConnectToVsp(struct hv_device *Device)
581 struct mousevsc_dev *inputDevice;
582 struct mousevsc_prt_msg *request;
583 struct mousevsc_prt_msg *response;
585 inputDevice = GetInputDevice(Device);
588 pr_err("unable to get input device...device being destroyed?");
592 init_waitqueue_head(&inputDevice->ProtocolWaitEvent);
593 init_waitqueue_head(&inputDevice->DeviceInfoWaitEvent);
595 request = &inputDevice->ProtocolReq;
598 * Now, initiate the vsc/vsp initialization protocol on the open channel
600 memset(request, 0, sizeof(struct mousevsc_prt_msg));
602 request->type = PipeMessageData;
603 request->size = sizeof(struct synthhid_protocol_request);
605 request->request.header.type = SynthHidProtocolRequest;
606 request->request.header.size = sizeof(unsigned long);
607 request->request.version_requested.version = SYNTHHID_INPUT_VERSION;
609 pr_info("synthhid protocol request...");
611 ret = vmbus_sendpacket(Device->channel, request,
612 sizeof(struct pipe_prt_msg) -
613 sizeof(unsigned char) +
614 sizeof(struct synthhid_protocol_request),
615 (unsigned long)request,
617 VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
619 pr_err("unable to send synthhid protocol request.");
623 inputDevice->protocol_wait_condition = 0;
624 wait_event_timeout(inputDevice->ProtocolWaitEvent, inputDevice->protocol_wait_condition, msecs_to_jiffies(1000));
625 if (inputDevice->protocol_wait_condition == 0) {
630 response = &inputDevice->ProtocolResp;
632 if (!response->response.approved) {
633 pr_err("synthhid protocol request failed (version %d)",
634 SYNTHHID_INPUT_VERSION);
639 inputDevice->device_wait_condition = 0;
640 wait_event_timeout(inputDevice->DeviceInfoWaitEvent, inputDevice->device_wait_condition, msecs_to_jiffies(1000));
641 if (inputDevice->device_wait_condition == 0) {
647 * We should have gotten the device attr, hid desc and report
650 if (!inputDevice->DeviceInfoStatus)
651 pr_info("**** input channel up and running!! ****");
656 PutInputDevice(Device);
661 static int MousevscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo)
664 struct mousevsc_dev *inputDevice;
665 struct mousevsc_drv_obj *inputDriver;
666 struct hv_input_dev_info dev_info;
668 inputDevice = AllocInputDevice(Device);
675 inputDevice->bInitializeComplete = false;
677 /* Open the channel */
678 ret = vmbus_open(Device->channel,
679 INPUTVSC_SEND_RING_BUFFER_SIZE,
680 INPUTVSC_RECV_RING_BUFFER_SIZE,
683 MousevscOnChannelCallback,
688 pr_err("unable to open channel: %d", ret);
689 FreeInputDevice(inputDevice);
693 pr_info("InputVsc channel open: %d", ret);
695 ret = MousevscConnectToVsp(Device);
698 pr_err("unable to connect channel: %d", ret);
700 vmbus_close(Device->channel);
701 FreeInputDevice(inputDevice);
705 inputDriver = (struct mousevsc_drv_obj *)inputDevice->Device->drv;
707 dev_info.vendor = inputDevice->hid_dev_info.vendor;
708 dev_info.product = inputDevice->hid_dev_info.product;
709 dev_info.version = inputDevice->hid_dev_info.version;
710 strcpy(dev_info.name, "Microsoft Vmbus HID-compliant Mouse");
712 /* Send the device info back up */
713 deviceinfo_callback(Device, &dev_info);
715 /* Send the report desc back up */
716 /* workaround SA-167 */
717 if (inputDevice->ReportDesc[14] == 0x25)
718 inputDevice->ReportDesc[14] = 0x29;
720 reportdesc_callback(Device, inputDevice->ReportDesc,
721 inputDevice->ReportDescSize);
723 inputDevice->bInitializeComplete = true;
729 static int MousevscOnDeviceRemove(struct hv_device *Device)
731 struct mousevsc_dev *inputDevice;
734 pr_info("disabling input device (%p)...",
737 inputDevice = ReleaseInputDevice(Device);
741 * At this point, all outbound traffic should be disable. We only
742 * allow inbound traffic (responses) to proceed
744 * so that outstanding requests can be completed.
746 while (inputDevice->NumOutstandingRequests) {
747 pr_info("waiting for %d requests to complete...", inputDevice->NumOutstandingRequests);
752 pr_info("removing input device (%p)...", Device->ext);
754 inputDevice = FinalReleaseInputDevice(Device);
756 pr_info("input device (%p) safe to remove", inputDevice);
758 /* Close the channel */
759 vmbus_close(Device->channel);
761 FreeInputDevice(inputDevice);
766 static void MousevscOnCleanup(struct hv_driver *drv)
773 struct input_device_context {
774 struct hv_device *device_ctx;
775 struct hid_device *hid_device;
776 struct hv_input_dev_info device_info;
781 static struct mousevsc_drv_obj g_mousevsc_drv;
783 static void deviceinfo_callback(struct hv_device *dev, struct hv_input_dev_info *info)
785 struct input_device_context *input_device_ctx =
786 dev_get_drvdata(&dev->device);
788 memcpy(&input_device_ctx->device_info, info,
789 sizeof(struct hv_input_dev_info));
791 DPRINT_INFO(INPUTVSC_DRV, "%s", __func__);
794 static void inputreport_callback(struct hv_device *dev, void *packet, u32 len)
798 struct input_device_context *input_dev_ctx =
799 dev_get_drvdata(&dev->device);
801 ret = hid_input_report(input_dev_ctx->hid_device,
802 HID_INPUT_REPORT, packet, len, 1);
804 DPRINT_DBG(INPUTVSC_DRV, "hid_input_report (ret %d)", ret);
807 static int mousevsc_hid_open(struct hid_device *hid)
812 static void mousevsc_hid_close(struct hid_device *hid)
816 static int mousevsc_probe(struct device *device)
820 struct hv_driver *drv =
821 drv_to_hv_drv(device->driver);
822 struct mousevsc_drv_obj *mousevsc_drv_obj = drv->priv;
824 struct hv_device *device_obj = device_to_hv_device(device);
825 struct input_device_context *input_dev_ctx;
827 input_dev_ctx = kmalloc(sizeof(struct input_device_context),
830 dev_set_drvdata(device, input_dev_ctx);
832 /* Call to the vsc driver to add the device */
833 ret = mousevsc_drv_obj->Base.dev_add(device_obj, NULL);
836 DPRINT_ERR(INPUTVSC_DRV, "unable to add input vsc device");
844 static int mousevsc_remove(struct device *device)
848 struct hv_driver *drv =
849 drv_to_hv_drv(device->driver);
850 struct mousevsc_drv_obj *mousevsc_drv_obj = drv->priv;
852 struct hv_device *device_obj = device_to_hv_device(device);
853 struct input_device_context *input_dev_ctx;
855 input_dev_ctx = kmalloc(sizeof(struct input_device_context),
858 dev_set_drvdata(device, input_dev_ctx);
860 if (input_dev_ctx->connected) {
861 hidinput_disconnect(input_dev_ctx->hid_device);
862 input_dev_ctx->connected = 0;
865 if (!mousevsc_drv_obj->Base.dev_rm)
869 * Call to the vsc driver to let it know that the device
872 ret = mousevsc_drv_obj->Base.dev_rm(device_obj);
875 DPRINT_ERR(INPUTVSC_DRV,
876 "unable to remove vsc device (ret %d)", ret);
879 kfree(input_dev_ctx);
884 static void reportdesc_callback(struct hv_device *dev, void *packet, u32 len)
886 struct input_device_context *input_device_ctx =
887 dev_get_drvdata(&dev->device);
888 struct hid_device *hid_dev;
890 /* hid_debug = -1; */
891 hid_dev = kmalloc(sizeof(struct hid_device), GFP_KERNEL);
893 if (hid_parse_report(hid_dev, packet, len)) {
894 DPRINT_INFO(INPUTVSC_DRV, "Unable to call hd_parse_report");
899 DPRINT_INFO(INPUTVSC_DRV, "hid_device created");
901 hid_dev->ll_driver->open = mousevsc_hid_open;
902 hid_dev->ll_driver->close = mousevsc_hid_close;
904 hid_dev->bus = BUS_VIRTUAL;
905 hid_dev->vendor = input_device_ctx->device_info.vendor;
906 hid_dev->product = input_device_ctx->device_info.product;
907 hid_dev->version = input_device_ctx->device_info.version;
908 hid_dev->dev = dev->device;
910 sprintf(hid_dev->name, "%s",
911 input_device_ctx->device_info.name);
914 * HJ Do we want to call it with a 0
916 if (!hidinput_connect(hid_dev, 0)) {
917 hid_dev->claimed |= HID_CLAIMED_INPUT;
919 input_device_ctx->connected = 1;
921 DPRINT_INFO(INPUTVSC_DRV,
922 "HID device claimed by input\n");
925 if (!hid_dev->claimed) {
926 DPRINT_ERR(INPUTVSC_DRV,
927 "HID device not claimed by "
928 "input or hiddev\n");
931 input_device_ctx->hid_device = hid_dev;
937 static int mousevsc_drv_exit_cb(struct device *dev, void *data)
939 struct device **curr = (struct device **)data;
945 static void mousevsc_drv_exit(void)
947 struct mousevsc_drv_obj *mousevsc_drv_obj = &g_mousevsc_drv;
948 struct hv_driver *drv = &g_mousevsc_drv.Base;
951 struct device *current_dev = NULL;
957 ret = driver_for_each_device(&drv->driver, NULL,
958 (void *)¤t_dev,
959 mousevsc_drv_exit_cb);
961 printk(KERN_ERR "Can't find mouse device!\n");
963 if (current_dev == NULL)
966 /* Initiate removal from the top-down */
967 device_unregister(current_dev);
970 if (mousevsc_drv_obj->Base.cleanup)
971 mousevsc_drv_obj->Base.cleanup(&mousevsc_drv_obj->Base);
973 vmbus_child_driver_unregister(&drv->driver);
978 static int mouse_vsc_initialize(struct hv_driver *Driver)
980 struct mousevsc_drv_obj *inputDriver =
981 (struct mousevsc_drv_obj *)Driver;
984 Driver->name = driver_name;
985 memcpy(&Driver->dev_type, &mouse_guid,
986 sizeof(struct hv_guid));
988 /* Setup the dispatch table */
989 inputDriver->Base.dev_add = MousevscOnDeviceAdd;
990 inputDriver->Base.dev_rm = MousevscOnDeviceRemove;
991 inputDriver->Base.cleanup = MousevscOnCleanup;
997 static int __init mousevsc_init(void)
999 struct mousevsc_drv_obj *input_drv_obj = &g_mousevsc_drv;
1000 struct hv_driver *drv = &g_mousevsc_drv.Base;
1002 DPRINT_INFO(INPUTVSC_DRV, "Hyper-V Mouse driver initializing.");
1004 /* Callback to client driver to complete the initialization */
1005 mouse_vsc_initialize(&input_drv_obj->Base);
1007 drv->driver.name = input_drv_obj->Base.name;
1008 drv->priv = input_drv_obj;
1010 drv->driver.probe = mousevsc_probe;
1011 drv->driver.remove = mousevsc_remove;
1013 /* The driver belongs to vmbus */
1014 vmbus_child_driver_register(&drv->driver);
1019 static void __exit mousevsc_exit(void)
1021 mousevsc_drv_exit();
1025 * We don't want to automatically load this driver just yet, it's quite
1026 * broken. It's safe if you want to load it yourself manually, but
1027 * don't inflict it on unsuspecting users, that's just mean.
1032 * We use a PCI table to determine if we should autoload this driver This is
1033 * needed by distro tools to determine if the hyperv drivers should be
1034 * installed and/or configured. We don't do anything else with the table, but
1035 * it needs to be present.
1037 const static struct pci_device_id microsoft_hv_pci_table[] = {
1038 { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */
1041 MODULE_DEVICE_TABLE(pci, microsoft_hv_pci_table);
1044 MODULE_LICENSE("GPL");
1045 MODULE_VERSION(HV_DRV_VERSION);
1046 module_init(mousevsc_init);
1047 module_exit(mousevsc_exit);