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/device.h>
18 #include <linux/workqueue.h>
19 #include <linux/sched.h>
20 #include <linux/wait.h>
21 #include <linux/input.h>
22 #include <linux/hid.h>
23 #include <linux/hiddev.h>
24 #include <linux/pci.h>
25 #include <linux/dmi.h>
29 #include "version_info.h"
31 #include "vmbus_api.h"
33 #include "vmbus_packet_format.h"
39 struct hv_input_dev_info {
40 unsigned short vendor;
41 unsigned short product;
42 unsigned short version;
46 /* Represents the input vsc driver */
47 /* FIXME - can be removed entirely */
48 struct mousevsc_drv_obj {
49 struct hv_driver Base;
53 /* The maximum size of a synthetic input message. */
54 #define SYNTHHID_MAX_INPUT_REPORT_SIZE 16
60 * Beta, RC < 2008/1/22 1,0
63 #define SYNTHHID_INPUT_VERSION_MAJOR 2
64 #define SYNTHHID_INPUT_VERSION_MINOR 0
65 #define SYNTHHID_INPUT_VERSION (SYNTHHID_INPUT_VERSION_MINOR | \
66 (SYNTHHID_INPUT_VERSION_MAJOR << 16))
71 * Message types in the synthetic input protocol
73 enum synthhid_msg_type {
74 SynthHidProtocolRequest,
75 SynthHidProtocolResponse,
76 SynthHidInitialDeviceInfo,
77 SynthHidInitialDeviceInfoAck,
83 * Basic message structures.
85 struct synthhid_msg_hdr {
86 enum synthhid_msg_type type;
91 struct synthhid_msg_hdr header;
92 char data[1]; /* Enclosed message */
95 union synthhid_version {
106 struct synthhid_protocol_request {
107 struct synthhid_msg_hdr header;
108 union synthhid_version version_requested;
111 struct synthhid_protocol_response {
112 struct synthhid_msg_hdr header;
113 union synthhid_version version_requested;
114 unsigned char approved;
117 struct synthhid_device_info {
118 struct synthhid_msg_hdr header;
119 struct hv_input_dev_info hid_dev_info;
120 struct hid_descriptor hid_descriptor;
123 struct synthhid_device_info_ack {
124 struct synthhid_msg_hdr header;
125 unsigned char reserved;
128 struct synthhid_input_report {
129 struct synthhid_msg_hdr header;
135 #define INPUTVSC_SEND_RING_BUFFER_SIZE 10*PAGE_SIZE
136 #define INPUTVSC_RECV_RING_BUFFER_SIZE 10*PAGE_SIZE
138 #define NBITS(x) (((x)/BITS_PER_LONG)+1)
140 enum pipe_prot_msg_type {
141 PipeMessageInvalid = 0,
147 struct pipe_prt_msg {
148 enum pipe_prot_msg_type type;
156 struct mousevsc_prt_msg {
157 enum pipe_prot_msg_type type;
160 struct synthhid_protocol_request request;
161 struct synthhid_protocol_response response;
162 struct synthhid_device_info_ack ack;
167 * Represents an mousevsc device
169 struct mousevsc_dev {
170 struct hv_device *Device;
171 /* 0 indicates the device is being destroyed */
173 int NumOutstandingRequests;
174 unsigned char bInitializeComplete;
175 struct mousevsc_prt_msg ProtocolReq;
176 struct mousevsc_prt_msg ProtocolResp;
177 /* Synchronize the request/response if needed */
178 wait_queue_head_t ProtocolWaitEvent;
179 wait_queue_head_t DeviceInfoWaitEvent;
180 int protocol_wait_condition;
181 int device_wait_condition;
182 int DeviceInfoStatus;
184 struct hid_descriptor *HidDesc;
185 unsigned char *ReportDesc;
187 struct hv_input_dev_info hid_dev_info;
191 static const char *driver_name = "mousevsc";
193 /* {CFA8B69E-5B4A-4cc0-B98B-8BA1A1F3F95A} */
194 static const struct hv_guid mouse_guid = {
195 .data = {0x9E, 0xB6, 0xA8, 0xCF, 0x4A, 0x5B, 0xc0, 0x4c,
196 0xB9, 0x8B, 0x8B, 0xA1, 0xA1, 0xF3, 0xF9, 0x5A}
199 static void deviceinfo_callback(struct hv_device *dev, struct hv_input_dev_info *info);
200 static void inputreport_callback(struct hv_device *dev, void *packet, u32 len);
201 static void reportdesc_callback(struct hv_device *dev, void *packet, u32 len);
203 static struct mousevsc_dev *AllocInputDevice(struct hv_device *Device)
205 struct mousevsc_dev *inputDevice;
207 inputDevice = kzalloc(sizeof(struct mousevsc_dev), GFP_KERNEL);
213 * Set to 2 to allow both inbound and outbound traffics
214 * (ie GetInputDevice() and MustGetInputDevice()) to proceed.
216 atomic_cmpxchg(&inputDevice->RefCount, 0, 2);
218 inputDevice->Device = Device;
219 Device->ext = inputDevice;
224 static void FreeInputDevice(struct mousevsc_dev *Device)
226 WARN_ON(atomic_read(&Device->RefCount) == 0);
231 * Get the inputdevice object if exists and its refcount > 1
233 static struct mousevsc_dev *GetInputDevice(struct hv_device *Device)
235 struct mousevsc_dev *inputDevice;
237 inputDevice = (struct mousevsc_dev *)Device->ext;
241 * This sure isn't a valid thing to print for debugging, no matter
242 * what the intention is...
244 * printk(KERN_ERR "-------------------------> REFCOUNT = %d",
245 * inputDevice->RefCount);
248 if (inputDevice && atomic_read(&inputDevice->RefCount) > 1)
249 atomic_inc(&inputDevice->RefCount);
257 * Get the inputdevice object iff exists and its refcount > 0
259 static struct mousevsc_dev *MustGetInputDevice(struct hv_device *Device)
261 struct mousevsc_dev *inputDevice;
263 inputDevice = (struct mousevsc_dev *)Device->ext;
265 if (inputDevice && atomic_read(&inputDevice->RefCount))
266 atomic_inc(&inputDevice->RefCount);
273 static void PutInputDevice(struct hv_device *Device)
275 struct mousevsc_dev *inputDevice;
277 inputDevice = (struct mousevsc_dev *)Device->ext;
279 atomic_dec(&inputDevice->RefCount);
283 * Drop ref count to 1 to effectively disable GetInputDevice()
285 static struct mousevsc_dev *ReleaseInputDevice(struct hv_device *Device)
287 struct mousevsc_dev *inputDevice;
289 inputDevice = (struct mousevsc_dev *)Device->ext;
291 /* Busy wait until the ref drop to 2, then set it to 1 */
292 while (atomic_cmpxchg(&inputDevice->RefCount, 2, 1) != 2)
299 * Drop ref count to 0. No one can use InputDevice object.
301 static struct mousevsc_dev *FinalReleaseInputDevice(struct hv_device *Device)
303 struct mousevsc_dev *inputDevice;
305 inputDevice = (struct mousevsc_dev *)Device->ext;
307 /* Busy wait until the ref drop to 1, then set it to 0 */
308 while (atomic_cmpxchg(&inputDevice->RefCount, 1, 0) != 1)
315 static void MousevscOnSendCompletion(struct hv_device *Device, struct vmpacket_descriptor *Packet)
317 struct mousevsc_dev *inputDevice;
320 inputDevice = MustGetInputDevice(Device);
322 pr_err("unable to get input device...device being destroyed?");
326 request = (void *)(unsigned long)Packet->trans_id;
328 if (request == &inputDevice->ProtocolReq) {
330 /* Shouldn't we be doing something here? */
333 PutInputDevice(Device);
336 static void MousevscOnReceiveDeviceInfo(struct mousevsc_dev *InputDevice, struct synthhid_device_info *DeviceInfo)
339 struct hid_descriptor *desc;
340 struct mousevsc_prt_msg ack;
342 /* Assume success for now */
343 InputDevice->DeviceInfoStatus = 0;
345 /* Save the device attr */
346 memcpy(&InputDevice->hid_dev_info, &DeviceInfo->hid_dev_info, sizeof(struct hv_input_dev_info));
348 /* Save the hid desc */
349 desc = &DeviceInfo->hid_descriptor;
350 WARN_ON(desc->bLength > 0);
352 InputDevice->HidDesc = kzalloc(desc->bLength, GFP_KERNEL);
354 if (!InputDevice->HidDesc) {
355 pr_err("unable to allocate hid descriptor - size %d", desc->bLength);
359 memcpy(InputDevice->HidDesc, desc, desc->bLength);
361 /* Save the report desc */
362 InputDevice->ReportDescSize = desc->desc[0].wDescriptorLength;
363 InputDevice->ReportDesc = kzalloc(InputDevice->ReportDescSize,
366 if (!InputDevice->ReportDesc) {
367 pr_err("unable to allocate report descriptor - size %d",
368 InputDevice->ReportDescSize);
372 memcpy(InputDevice->ReportDesc,
373 ((unsigned char *)desc) + desc->bLength,
374 desc->desc[0].wDescriptorLength);
377 memset(&ack, sizeof(struct mousevsc_prt_msg), 0);
379 ack.type = PipeMessageData;
380 ack.size = sizeof(struct synthhid_device_info_ack);
382 ack.ack.header.type = SynthHidInitialDeviceInfoAck;
383 ack.ack.header.size = 1;
384 ack.ack.reserved = 0;
386 ret = vmbus_sendpacket(InputDevice->Device->channel,
388 sizeof(struct pipe_prt_msg) - sizeof(unsigned char) +
389 sizeof(struct synthhid_device_info_ack),
392 VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
394 pr_err("unable to send synthhid device info ack - ret %d",
399 InputDevice->device_wait_condition = 1;
400 wake_up(&InputDevice->DeviceInfoWaitEvent);
405 kfree(InputDevice->HidDesc);
406 InputDevice->HidDesc = NULL;
408 kfree(InputDevice->ReportDesc);
409 InputDevice->ReportDesc = NULL;
411 InputDevice->DeviceInfoStatus = -1;
412 InputDevice->device_wait_condition = 1;
413 wake_up(&InputDevice->DeviceInfoWaitEvent);
416 static void MousevscOnReceiveInputReport(struct mousevsc_dev *InputDevice, struct synthhid_input_report *InputReport)
418 struct mousevsc_drv_obj *inputDriver;
420 if (!InputDevice->bInitializeComplete) {
421 pr_info("Initialization incomplete...ignoring InputReport msg");
425 inputDriver = (struct mousevsc_drv_obj *)InputDevice->Device->drv;
427 inputreport_callback(InputDevice->Device,
429 InputReport->header.size);
432 static void MousevscOnReceive(struct hv_device *Device, struct vmpacket_descriptor *Packet)
434 struct pipe_prt_msg *pipeMsg;
435 struct synthhid_msg *hidMsg;
436 struct mousevsc_dev *inputDevice;
438 inputDevice = MustGetInputDevice(Device);
440 pr_err("unable to get input device...device being destroyed?");
444 pipeMsg = (struct pipe_prt_msg *)((unsigned long)Packet + (Packet->offset8 << 3));
446 if (pipeMsg->type != PipeMessageData) {
447 pr_err("unknown pipe msg type - type %d len %d",
448 pipeMsg->type, pipeMsg->size);
449 PutInputDevice(Device);
453 hidMsg = (struct synthhid_msg *)&pipeMsg->data[0];
455 switch (hidMsg->header.type) {
456 case SynthHidProtocolResponse:
457 memcpy(&inputDevice->ProtocolResp, pipeMsg,
458 pipeMsg->size + sizeof(struct pipe_prt_msg) -
459 sizeof(unsigned char));
460 inputDevice->protocol_wait_condition = 1;
461 wake_up(&inputDevice->ProtocolWaitEvent);
464 case SynthHidInitialDeviceInfo:
465 WARN_ON(pipeMsg->size >= sizeof(struct hv_input_dev_info));
468 * Parse out the device info into device attr,
469 * hid desc and report desc
471 MousevscOnReceiveDeviceInfo(inputDevice,
472 (struct synthhid_device_info *)&pipeMsg->data[0]);
474 case SynthHidInputReport:
475 MousevscOnReceiveInputReport(inputDevice,
476 (struct synthhid_input_report *)&pipeMsg->data[0]);
480 pr_err("unsupported hid msg type - type %d len %d",
481 hidMsg->header.type, hidMsg->header.size);
485 PutInputDevice(Device);
488 static void MousevscOnChannelCallback(void *Context)
490 const int packetSize = 0x100;
492 struct hv_device *device = (struct hv_device *)Context;
493 struct mousevsc_dev *inputDevice;
497 unsigned char packet[packetSize];
498 struct vmpacket_descriptor *desc;
499 unsigned char *buffer = packet;
500 int bufferlen = packetSize;
502 inputDevice = MustGetInputDevice(device);
505 pr_err("unable to get input device...device being destroyed?");
510 ret = vmbus_recvpacket_raw(device->channel, buffer, bufferlen, &bytesRecvd, &requestId);
513 if (bytesRecvd > 0) {
514 desc = (struct vmpacket_descriptor *)buffer;
516 switch (desc->type) {
518 MousevscOnSendCompletion(device,
522 case VM_PKT_DATA_INBAND:
523 MousevscOnReceive(device, desc);
527 pr_err("unhandled packet type %d, tid %llx len %d\n",
535 if (bufferlen > packetSize) {
539 bufferlen = packetSize;
543 * pr_debug("nothing else to read...");
546 if (bufferlen > packetSize) {
550 bufferlen = packetSize;
554 } else if (ret == -2) {
555 /* Handle large packet */
556 bufferlen = bytesRecvd;
557 buffer = kzalloc(bytesRecvd, GFP_KERNEL);
559 if (buffer == NULL) {
561 bufferlen = packetSize;
563 /* Try again next time around */
564 pr_err("unable to allocate buffer of size %d!",
571 PutInputDevice(device);
576 static int MousevscConnectToVsp(struct hv_device *Device)
579 struct mousevsc_dev *inputDevice;
580 struct mousevsc_prt_msg *request;
581 struct mousevsc_prt_msg *response;
583 inputDevice = GetInputDevice(Device);
586 pr_err("unable to get input device...device being destroyed?");
590 init_waitqueue_head(&inputDevice->ProtocolWaitEvent);
591 init_waitqueue_head(&inputDevice->DeviceInfoWaitEvent);
593 request = &inputDevice->ProtocolReq;
596 * Now, initiate the vsc/vsp initialization protocol on the open channel
598 memset(request, sizeof(struct mousevsc_prt_msg), 0);
600 request->type = PipeMessageData;
601 request->size = sizeof(struct synthhid_protocol_request);
603 request->request.header.type = SynthHidProtocolRequest;
604 request->request.header.size = sizeof(unsigned long);
605 request->request.version_requested.version = SYNTHHID_INPUT_VERSION;
607 pr_info("synthhid protocol request...");
609 ret = vmbus_sendpacket(Device->channel, request,
610 sizeof(struct pipe_prt_msg) -
611 sizeof(unsigned char) +
612 sizeof(struct synthhid_protocol_request),
613 (unsigned long)request,
615 VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
617 pr_err("unable to send synthhid protocol request.");
621 inputDevice->protocol_wait_condition = 0;
622 wait_event_timeout(inputDevice->ProtocolWaitEvent, inputDevice->protocol_wait_condition, msecs_to_jiffies(1000));
623 if (inputDevice->protocol_wait_condition == 0) {
628 response = &inputDevice->ProtocolResp;
630 if (!response->response.approved) {
631 pr_err("synthhid protocol request failed (version %d)",
632 SYNTHHID_INPUT_VERSION);
637 inputDevice->device_wait_condition = 0;
638 wait_event_timeout(inputDevice->DeviceInfoWaitEvent, inputDevice->device_wait_condition, msecs_to_jiffies(1000));
639 if (inputDevice->device_wait_condition == 0) {
645 * We should have gotten the device attr, hid desc and report
648 if (!inputDevice->DeviceInfoStatus)
649 pr_info("**** input channel up and running!! ****");
654 PutInputDevice(Device);
659 static int MousevscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo)
662 struct mousevsc_dev *inputDevice;
663 struct mousevsc_drv_obj *inputDriver;
664 struct hv_input_dev_info dev_info;
666 inputDevice = AllocInputDevice(Device);
673 inputDevice->bInitializeComplete = false;
675 /* Open the channel */
676 ret = vmbus_open(Device->channel,
677 INPUTVSC_SEND_RING_BUFFER_SIZE,
678 INPUTVSC_RECV_RING_BUFFER_SIZE,
681 MousevscOnChannelCallback,
686 pr_err("unable to open channel: %d", ret);
687 FreeInputDevice(inputDevice);
691 pr_info("InputVsc channel open: %d", ret);
693 ret = MousevscConnectToVsp(Device);
696 pr_err("unable to connect channel: %d", ret);
698 vmbus_close(Device->channel);
699 FreeInputDevice(inputDevice);
703 inputDriver = (struct mousevsc_drv_obj *)inputDevice->Device->drv;
705 dev_info.vendor = inputDevice->hid_dev_info.vendor;
706 dev_info.product = inputDevice->hid_dev_info.product;
707 dev_info.version = inputDevice->hid_dev_info.version;
708 strcpy(dev_info.name, "Microsoft Vmbus HID-compliant Mouse");
710 /* Send the device info back up */
711 deviceinfo_callback(Device, &dev_info);
713 /* Send the report desc back up */
714 /* workaround SA-167 */
715 if (inputDevice->ReportDesc[14] == 0x25)
716 inputDevice->ReportDesc[14] = 0x29;
718 reportdesc_callback(Device, inputDevice->ReportDesc,
719 inputDevice->ReportDescSize);
721 inputDevice->bInitializeComplete = true;
727 static int MousevscOnDeviceRemove(struct hv_device *Device)
729 struct mousevsc_dev *inputDevice;
732 pr_info("disabling input device (%p)...",
735 inputDevice = ReleaseInputDevice(Device);
739 * At this point, all outbound traffic should be disable. We only
740 * allow inbound traffic (responses) to proceed
742 * so that outstanding requests can be completed.
744 while (inputDevice->NumOutstandingRequests) {
745 pr_info("waiting for %d requests to complete...", inputDevice->NumOutstandingRequests);
750 pr_info("removing input device (%p)...", Device->ext);
752 inputDevice = FinalReleaseInputDevice(Device);
754 pr_info("input device (%p) safe to remove", inputDevice);
756 /* Close the channel */
757 vmbus_close(Device->channel);
759 FreeInputDevice(inputDevice);
764 static void MousevscOnCleanup(struct hv_driver *drv)
771 struct input_device_context {
772 struct hv_device *device_ctx;
773 struct hid_device *hid_device;
774 struct hv_input_dev_info device_info;
779 static struct mousevsc_drv_obj g_mousevsc_drv;
781 static void deviceinfo_callback(struct hv_device *dev, struct hv_input_dev_info *info)
783 struct input_device_context *input_device_ctx =
784 dev_get_drvdata(&dev->device);
786 memcpy(&input_device_ctx->device_info, info,
787 sizeof(struct hv_input_dev_info));
789 DPRINT_INFO(INPUTVSC_DRV, "%s", __func__);
792 static void inputreport_callback(struct hv_device *dev, void *packet, u32 len)
796 struct input_device_context *input_dev_ctx =
797 dev_get_drvdata(&dev->device);
799 ret = hid_input_report(input_dev_ctx->hid_device,
800 HID_INPUT_REPORT, packet, len, 1);
802 DPRINT_DBG(INPUTVSC_DRV, "hid_input_report (ret %d)", ret);
805 static int mousevsc_hid_open(struct hid_device *hid)
810 static void mousevsc_hid_close(struct hid_device *hid)
814 static int mousevsc_probe(struct device *device)
818 struct hv_driver *drv =
819 drv_to_hv_drv(device->driver);
820 struct mousevsc_drv_obj *mousevsc_drv_obj = drv->priv;
822 struct hv_device *device_obj = device_to_hv_device(device);
823 struct input_device_context *input_dev_ctx;
825 input_dev_ctx = kmalloc(sizeof(struct input_device_context),
828 dev_set_drvdata(device, input_dev_ctx);
830 /* Call to the vsc driver to add the device */
831 ret = mousevsc_drv_obj->Base.dev_add(device_obj, NULL);
834 DPRINT_ERR(INPUTVSC_DRV, "unable to add input vsc device");
842 static int mousevsc_remove(struct device *device)
846 struct hv_driver *drv =
847 drv_to_hv_drv(device->driver);
848 struct mousevsc_drv_obj *mousevsc_drv_obj = drv->priv;
850 struct hv_device *device_obj = device_to_hv_device(device);
851 struct input_device_context *input_dev_ctx;
853 input_dev_ctx = kmalloc(sizeof(struct input_device_context),
856 dev_set_drvdata(device, input_dev_ctx);
858 if (input_dev_ctx->connected) {
859 hidinput_disconnect(input_dev_ctx->hid_device);
860 input_dev_ctx->connected = 0;
863 if (!mousevsc_drv_obj->Base.dev_rm)
867 * Call to the vsc driver to let it know that the device
870 ret = mousevsc_drv_obj->Base.dev_rm(device_obj);
873 DPRINT_ERR(INPUTVSC_DRV,
874 "unable to remove vsc device (ret %d)", ret);
877 kfree(input_dev_ctx);
882 static void reportdesc_callback(struct hv_device *dev, void *packet, u32 len)
884 struct input_device_context *input_device_ctx =
885 dev_get_drvdata(&dev->device);
886 struct hid_device *hid_dev;
888 /* hid_debug = -1; */
889 hid_dev = kmalloc(sizeof(struct hid_device), GFP_KERNEL);
891 if (hid_parse_report(hid_dev, packet, len)) {
892 DPRINT_INFO(INPUTVSC_DRV, "Unable to call hd_parse_report");
897 DPRINT_INFO(INPUTVSC_DRV, "hid_device created");
899 hid_dev->ll_driver->open = mousevsc_hid_open;
900 hid_dev->ll_driver->close = mousevsc_hid_close;
902 hid_dev->bus = BUS_VIRTUAL;
903 hid_dev->vendor = input_device_ctx->device_info.vendor;
904 hid_dev->product = input_device_ctx->device_info.product;
905 hid_dev->version = input_device_ctx->device_info.version;
906 hid_dev->dev = dev->device;
908 sprintf(hid_dev->name, "%s",
909 input_device_ctx->device_info.name);
912 * HJ Do we want to call it with a 0
914 if (!hidinput_connect(hid_dev, 0)) {
915 hid_dev->claimed |= HID_CLAIMED_INPUT;
917 input_device_ctx->connected = 1;
919 DPRINT_INFO(INPUTVSC_DRV,
920 "HID device claimed by input\n");
923 if (!hid_dev->claimed) {
924 DPRINT_ERR(INPUTVSC_DRV,
925 "HID device not claimed by "
926 "input or hiddev\n");
929 input_device_ctx->hid_device = hid_dev;
935 static int mousevsc_drv_exit_cb(struct device *dev, void *data)
937 struct device **curr = (struct device **)data;
943 static void mousevsc_drv_exit(void)
945 struct mousevsc_drv_obj *mousevsc_drv_obj = &g_mousevsc_drv;
946 struct hv_driver *drv = &g_mousevsc_drv.Base;
949 struct device *current_dev = NULL;
955 ret = driver_for_each_device(&drv->driver, NULL,
956 (void *)¤t_dev,
957 mousevsc_drv_exit_cb);
959 printk(KERN_ERR "Can't find mouse device!\n");
961 if (current_dev == NULL)
964 /* Initiate removal from the top-down */
965 device_unregister(current_dev);
968 if (mousevsc_drv_obj->Base.cleanup)
969 mousevsc_drv_obj->Base.cleanup(&mousevsc_drv_obj->Base);
971 vmbus_child_driver_unregister(&drv->driver);
976 static int mouse_vsc_initialize(struct hv_driver *Driver)
978 struct mousevsc_drv_obj *inputDriver =
979 (struct mousevsc_drv_obj *)Driver;
982 Driver->name = driver_name;
983 memcpy(&Driver->dev_type, &mouse_guid,
984 sizeof(struct hv_guid));
986 /* Setup the dispatch table */
987 inputDriver->Base.dev_add = MousevscOnDeviceAdd;
988 inputDriver->Base.dev_rm = MousevscOnDeviceRemove;
989 inputDriver->Base.cleanup = MousevscOnCleanup;
995 static int __init mousevsc_init(void)
997 struct mousevsc_drv_obj *input_drv_obj = &g_mousevsc_drv;
998 struct hv_driver *drv = &g_mousevsc_drv.Base;
1000 DPRINT_INFO(INPUTVSC_DRV, "Hyper-V Mouse driver initializing.");
1002 /* Callback to client driver to complete the initialization */
1003 mouse_vsc_initialize(&input_drv_obj->Base);
1005 drv->driver.name = input_drv_obj->Base.name;
1006 drv->priv = input_drv_obj;
1008 drv->driver.probe = mousevsc_probe;
1009 drv->driver.remove = mousevsc_remove;
1011 /* The driver belongs to vmbus */
1012 vmbus_child_driver_register(&drv->driver);
1017 static void __exit mousevsc_exit(void)
1019 mousevsc_drv_exit();
1023 * We don't want to automatically load this driver just yet, it's quite
1024 * broken. It's safe if you want to load it yourself manually, but
1025 * don't inflict it on unsuspecting users, that's just mean.
1030 * We use a PCI table to determine if we should autoload this driver This is
1031 * needed by distro tools to determine if the hyperv drivers should be
1032 * installed and/or configured. We don't do anything else with the table, but
1033 * it needs to be present.
1035 const static struct pci_device_id microsoft_hv_pci_table[] = {
1036 { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */
1039 MODULE_DEVICE_TABLE(pci, microsoft_hv_pci_table);
1042 MODULE_LICENSE("GPL");
1043 MODULE_VERSION(HV_DRV_VERSION);
1044 module_init(mousevsc_init);
1045 module_exit(mousevsc_exit);