dlls/winebus.sys/main.c

   1 /*
   2  * WINE Platform native bus driver
   3  *
   4  * Copyright 2016 Aric Stewart
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20 #include "config.h"
  21 #include <stdarg.h>
  22
  23 #define NONAMELESSUNION
  24 #define NONAMELESSSTRUCT
  25
  26 #include "ntstatus.h"
  27 #define WIN32_NO_STATUS
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winuser.h"
  31 #include "winternl.h"
  32 #include "winreg.h"
  33 #include "setupapi.h"
  34 #include "winioctl.h"
  35 #include "ddk/wdm.h"
  36 #include "ddk/hidport.h"
  37 #include "wine/debug.h"
  38 #include "wine/unicode.h"
  39 #include "wine/list.h"
  40
  41 #include "bus.h"
  42
  43 WINE_DEFAULT_DEBUG_CHANNEL(plugplay);
  44 WINE_DECLARE_DEBUG_CHANNEL(hid_report);
  45
  46 #define VID_MICROSOFT 0x045e
  47
  48 static const WORD PID_XBOX_CONTROLLERS[] =  {
  49     0x0202, /* Xbox Controller */
  50     0x0285, /* Xbox Controller S */
  51     0x0289, /* Xbox Controller S */
  52     0x028e, /* Xbox360 Controller */
  53     0x028f, /* Xbox360 Wireless Controller */
  54     0x02d1, /* Xbox One Controller */
  55     0x02dd, /* Xbox One Controller (Covert Forces/Firmware 2015) */
  56     0x02e3, /* Xbox One Elite Controller */
  57     0x02e6, /* Wireless XBox Controller Dongle */
  58     0x02ea, /* Xbox One S Controller */
  59     0x0719, /* Xbox 360 Wireless Adapter */
  60 };
  61
  62 struct pnp_device
  63 {
  64     struct list entry;
  65     DEVICE_OBJECT *device;
  66 };
  67
  68 struct device_extension
  69 {
  70     struct pnp_device *pnp_device;
  71
  72     WORD vid, pid;
  73     DWORD uid, version, index;
  74     BOOL is_gamepad;
  75     WCHAR *serial;
  76     const WCHAR *busid;  /* Expected to be a static constant */
  77
  78     const platform_vtbl *vtbl;
  79
  80     BYTE *last_report;
  81     DWORD last_report_size;
  82     BOOL last_report_read;
  83     DWORD buffer_size;
  84     LIST_ENTRY irp_queue;
  85     CRITICAL_SECTION report_cs;
  86
  87     BYTE platform_private[1];
  88 };
  89
  90 static CRITICAL_SECTION device_list_cs;
  91 static CRITICAL_SECTION_DEBUG critsect_debug =
  92 {
  93     0, 0, &device_list_cs,
  94     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  95       0, 0, { (DWORD_PTR)(__FILE__ ": device_list_cs") }
  96 };
  97 static CRITICAL_SECTION device_list_cs = { &critsect_debug, -1, 0, 0, 0, 0 };
  98
  99 static struct list pnp_devset = LIST_INIT(pnp_devset);
 100
 101 static const WCHAR zero_serialW[]= {'0','0','0','0',0};
 102 static const WCHAR imW[] = {'I','M',0};
 103 static const WCHAR igW[] = {'I','G',0};
 104
 105 static inline WCHAR *strdupW(const WCHAR *src)
 106 {
 107     WCHAR *dst;
 108     if (!src) return NULL;
 109     dst = HeapAlloc(GetProcessHeap(), 0, (strlenW(src) + 1)*sizeof(WCHAR));
 110     if (dst) strcpyW(dst, src);
 111     return dst;
 112 }
 113
 114 void *get_platform_private(DEVICE_OBJECT *device)
 115 {
 116     struct device_extension *ext = (struct device_extension *)device->DeviceExtension;
 117     return ext->platform_private;
 118 }
 119
 120 static DWORD get_vidpid_index(WORD vid, WORD pid)
 121 {
 122     struct pnp_device *ptr;
 123     DWORD index = 1;
 124
 125     LIST_FOR_EACH_ENTRY(ptr, &pnp_devset, struct pnp_device, entry)
 126     {
 127         struct device_extension *ext = (struct device_extension *)ptr->device->DeviceExtension;
 128         if (ext->vid == vid && ext->pid == pid)
 129             index = max(ext->index + 1, index);
 130     }
 131
 132     return index;
 133 }
 134
 135 static WCHAR *get_instance_id(DEVICE_OBJECT *device)
 136 {
 137     static const WCHAR formatW[] =  {'%','s','\\','V','i','d','_','%','0','4','x','&', 'P','i','d','_','%','0','4','x','&',
 138                                      '%','s','_','%','i','\\','%','i','&','%','s','&','%','x',0};
 139     struct device_extension *ext = (struct device_extension *)device->DeviceExtension;
 140     const WCHAR *serial = ext->serial ? ext->serial : zero_serialW;
 141     DWORD len = strlenW(ext->busid) + strlenW(serial) + 64;
 142     WCHAR *dst;
 143
 144     if ((dst = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
 145         sprintfW(dst, formatW, ext->busid, ext->vid, ext->pid, ext->is_gamepad ? igW : imW,
 146                  ext->index, ext->version, serial, ext->uid);
 147
 148     return dst;
 149 }
 150
 151 static WCHAR *get_device_id(DEVICE_OBJECT *device)
 152 {
 153     static const WCHAR formatW[] =  {'%','s','\\','V','i','d','_','%','0','4','x','&','P','i','d','_','%','0','4','x',0};
 154     struct device_extension *ext = (struct device_extension *)device->DeviceExtension;
 155     DWORD len = strlenW(ext->busid) + 19;
 156     WCHAR *dst;
 157
 158     if ((dst = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
 159         sprintfW(dst, formatW, ext->busid, ext->vid, ext->pid);
 160
 161     return dst;
 162 }
 163
 164 static WCHAR *get_compatible_ids(DEVICE_OBJECT *device)
 165 {
 166     struct device_extension *ext = (struct device_extension *)device->DeviceExtension;
 167     WCHAR *iid, *did, *dst, *ptr;
 168     DWORD len;
 169
 170     if (!(iid = get_instance_id(device)))
 171         return NULL;
 172
 173     if (!(did = get_device_id(device)))
 174     {
 175         HeapFree(GetProcessHeap(), 0, iid);
 176         return NULL;
 177     }
 178
 179     len = strlenW(iid) + strlenW(did) + strlenW(ext->busid) + 4;
 180     if ((dst = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
 181     {
 182         ptr = dst;
 183         strcpyW(ptr, iid);
 184         ptr += strlenW(iid) + 1;
 185         strcpyW(ptr, did);
 186         ptr += strlenW(did) + 1;
 187         strcpyW(ptr, ext->busid);
 188         ptr += strlenW(ext->busid) + 1;
 189         *ptr = 0;
 190     }
 191
 192     HeapFree(GetProcessHeap(), 0, iid);
 193     HeapFree(GetProcessHeap(), 0, did);
 194     return dst;
 195 }
 196
 197 DEVICE_OBJECT *bus_create_hid_device(DRIVER_OBJECT *driver, const WCHAR *busidW, WORD vid, WORD pid,
 198                                      DWORD version, DWORD uid, const WCHAR *serialW, BOOL is_gamepad,
 199                                      const GUID *class, const platform_vtbl *vtbl, DWORD platform_data_size)
 200 {
 201     static const WCHAR device_name_fmtW[] = {'\\','D','e','v','i','c','e','\\','%','s','#','%','p',0};
 202     struct device_extension *ext;
 203     struct pnp_device *pnp_dev;
 204     DEVICE_OBJECT *device;
 205     UNICODE_STRING nameW;
 206     WCHAR dev_name[256];
 207     HDEVINFO devinfo;
 208     NTSTATUS status;
 209     DWORD length;
 210
 211     TRACE("(%p, %s, %04x, %04x, %u, %u, %s, %u, %s, %p, %u)\n", driver, debugstr_w(busidW), vid, pid,
 212           version, uid, debugstr_w(serialW), is_gamepad, debugstr_guid(class), vtbl, platform_data_size);
 213
 214     if (!(pnp_dev = HeapAlloc(GetProcessHeap(), 0, sizeof(*pnp_dev))))
 215         return NULL;
 216
 217     sprintfW(dev_name, device_name_fmtW, busidW, pnp_dev);
 218     RtlInitUnicodeString(&nameW, dev_name);
 219     length = FIELD_OFFSET(struct device_extension, platform_private[platform_data_size]);
 220     status = IoCreateDevice(driver, length, &nameW, 0, 0, FALSE, &device);
 221     if (status)
 222     {
 223         FIXME("failed to create device error %x\n", status);
 224         HeapFree(GetProcessHeap(), 0, pnp_dev);
 225         return NULL;
 226     }
 227
 228     EnterCriticalSection(&device_list_cs);
 229
 230     /* fill out device_extension struct */
 231     ext = (struct device_extension *)device->DeviceExtension;
 232     ext->pnp_device         = pnp_dev;
 233     ext->vid                = vid;
 234     ext->pid                = pid;
 235     ext->uid                = uid;
 236     ext->version            = version;
 237     ext->index              = get_vidpid_index(vid, pid);
 238     ext->is_gamepad         = is_gamepad;
 239     ext->serial             = strdupW(serialW);
 240     ext->busid              = busidW;
 241     ext->vtbl               = vtbl;
 242     ext->last_report        = NULL;
 243     ext->last_report_size   = 0;
 244     ext->last_report_read   = TRUE;
 245     ext->buffer_size        = 0;
 246
 247     memset(ext->platform_private, 0, platform_data_size);
 248
 249     InitializeListHead(&ext->irp_queue);
 250     InitializeCriticalSection(&ext->report_cs);
 251     ext->report_cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": report_cs");
 252
 253     /* add to list of pnp devices */
 254     pnp_dev->device = device;
 255     list_add_tail(&pnp_devset, &pnp_dev->entry);
 256
 257     LeaveCriticalSection(&device_list_cs);
 258
 259     devinfo = SetupDiGetClassDevsW(class, NULL, NULL, DIGCF_DEVICEINTERFACE);
 260     if (devinfo)
 261     {
 262         SP_DEVINFO_DATA data;
 263         WCHAR *instance;
 264
 265         data.cbSize = sizeof(data);
 266         if (!(instance = get_instance_id(device)))
 267             ERR("failed to generate instance id\n");
 268         else if (!SetupDiCreateDeviceInfoW(devinfo, instance, class, NULL, NULL, DICD_INHERIT_CLASSDRVS, &data))
 269             ERR("failed to create device info: %x\n", GetLastError());
 270         else if (!SetupDiRegisterDeviceInfo(devinfo, &data, 0, NULL, NULL, NULL))
 271             ERR("failed to register device info: %x\n", GetLastError());
 272
 273         HeapFree(GetProcessHeap(), 0, instance);
 274         SetupDiDestroyDeviceInfoList(devinfo);
 275     }
 276     else
 277         ERR("failed to get ClassDevs: %x\n", GetLastError());
 278
 279     return device;
 280 }
 281
 282 DEVICE_OBJECT *bus_find_hid_device(const platform_vtbl *vtbl, void *platform_dev)
 283 {
 284     struct pnp_device *dev;
 285     DEVICE_OBJECT *ret = NULL;
 286
 287     TRACE("(%p, %p)\n", vtbl, platform_dev);
 288
 289     EnterCriticalSection(&device_list_cs);
 290     LIST_FOR_EACH_ENTRY(dev, &pnp_devset, struct pnp_device, entry)
 291     {
 292         struct device_extension *ext = (struct device_extension *)dev->device->DeviceExtension;
 293         if (ext->vtbl != vtbl) continue;
 294         if (ext->vtbl->compare_platform_device(dev->device, platform_dev) == 0)
 295         {
 296             ret = dev->device;
 297             break;
 298         }
 299     }
 300     LeaveCriticalSection(&device_list_cs);
 301
 302     TRACE("returning %p\n", ret);
 303     return ret;
 304 }
 305
 306 DEVICE_OBJECT* bus_enumerate_hid_devices(const platform_vtbl *vtbl, enum_func function, void* context)
 307 {
 308     struct pnp_device *dev;
 309     DEVICE_OBJECT *ret = NULL;
 310
 311     TRACE("(%p)\n", vtbl);
 312
 313     EnterCriticalSection(&device_list_cs);
 314     LIST_FOR_EACH_ENTRY(dev, &pnp_devset, struct pnp_device, entry)
 315     {
 316         struct device_extension *ext = (struct device_extension *)dev->device->DeviceExtension;
 317         if (ext->vtbl != vtbl) continue;
 318         if (function(dev->device, context) == 0)
 319         {
 320             ret = dev->device;
 321             break;
 322         }
 323     }
 324     LeaveCriticalSection(&device_list_cs);
 325     return ret;
 326 }
 327
 328 void bus_remove_hid_device(DEVICE_OBJECT *device)
 329 {
 330     struct device_extension *ext = (struct device_extension *)device->DeviceExtension;
 331     struct pnp_device *pnp_device = ext->pnp_device;
 332     LIST_ENTRY *entry;
 333     IRP *irp;
 334
 335     TRACE("(%p)\n", device);
 336
 337     EnterCriticalSection(&device_list_cs);
 338     list_remove(&pnp_device->entry);
 339     LeaveCriticalSection(&device_list_cs);
 340
 341     /* Cancel pending IRPs */
 342     EnterCriticalSection(&ext->report_cs);
 343     while ((entry = RemoveHeadList(&ext->irp_queue)) != &ext->irp_queue)
 344     {
 345         irp = CONTAINING_RECORD(entry, IRP, Tail.Overlay.s.ListEntry);
 346         irp->IoStatus.u.Status = STATUS_CANCELLED;
 347         irp->IoStatus.Information = 0;
 348         IoCompleteRequest(irp, IO_NO_INCREMENT);
 349     }
 350     LeaveCriticalSection(&ext->report_cs);
 351
 352     ext->report_cs.DebugInfo->Spare[0] = 0;
 353     DeleteCriticalSection(&ext->report_cs);
 354
 355     HeapFree(GetProcessHeap(), 0, ext->serial);
 356     HeapFree(GetProcessHeap(), 0, ext->last_report);
 357     IoDeleteDevice(device);
 358
 359     /* pnp_device must be released after the device is gone */
 360     HeapFree(GetProcessHeap(), 0, pnp_device);
 361 }
 362
 363 static NTSTATUS handle_IRP_MN_QUERY_ID(DEVICE_OBJECT *device, IRP *irp)
 364 {
 365     NTSTATUS status = irp->IoStatus.u.Status;
 366     IO_STACK_LOCATION *irpsp = IoGetCurrentIrpStackLocation( irp );
 367     BUS_QUERY_ID_TYPE type = irpsp->Parameters.QueryId.IdType;
 368
 369     TRACE("(%p, %p)\n", device, irp);
 370
 371     switch (type)
 372     {
 373         case BusQueryHardwareIDs:
 374             TRACE("BusQueryHardwareIDs\n");
 375             irp->IoStatus.Information = (ULONG_PTR)get_compatible_ids(device);
 376             break;
 377         case BusQueryCompatibleIDs:
 378             TRACE("BusQueryCompatibleIDs\n");
 379             irp->IoStatus.Information = (ULONG_PTR)get_compatible_ids(device);
 380             break;
 381         case BusQueryDeviceID:
 382             TRACE("BusQueryDeviceID\n");
 383             irp->IoStatus.Information = (ULONG_PTR)get_device_id(device);
 384             break;
 385         case BusQueryInstanceID:
 386             TRACE("BusQueryInstanceID\n");
 387             irp->IoStatus.Information = (ULONG_PTR)get_instance_id(device);
 388             break;
 389         default:
 390             FIXME("Unhandled type %08x\n", type);
 391             return status;
 392     }
 393
 394     status = irp->IoStatus.Information ? STATUS_SUCCESS : STATUS_NO_MEMORY;
 395     return status;
 396 }
 397
 398 NTSTATUS WINAPI common_pnp_dispatch(DEVICE_OBJECT *device, IRP *irp)
 399 {
 400     NTSTATUS status = irp->IoStatus.u.Status;
 401     IO_STACK_LOCATION *irpsp = IoGetCurrentIrpStackLocation(irp);
 402
 403     switch (irpsp->MinorFunction)
 404     {
 405         case IRP_MN_QUERY_DEVICE_RELATIONS:
 406             TRACE("IRP_MN_QUERY_DEVICE_RELATIONS\n");
 407             break;
 408         case IRP_MN_QUERY_ID:
 409             TRACE("IRP_MN_QUERY_ID\n");
 410             status = handle_IRP_MN_QUERY_ID(device, irp);
 411             irp->IoStatus.u.Status = status;
 412             break;
 413         case IRP_MN_QUERY_CAPABILITIES:
 414             TRACE("IRP_MN_QUERY_CAPABILITIES\n");
 415             break;
 416         default:
 417             FIXME("Unhandled function %08x\n", irpsp->MinorFunction);
 418             break;
 419     }
 420
 421     IoCompleteRequest(irp, IO_NO_INCREMENT);
 422     return status;
 423 }
 424
 425 static NTSTATUS deliver_last_report(struct device_extension *ext, DWORD buffer_length, BYTE* buffer, ULONG_PTR *out_length)
 426 {
 427     if (buffer_length < ext->last_report_size)
 428     {
 429         *out_length = 0;
 430         return STATUS_BUFFER_TOO_SMALL;
 431     }
 432     else
 433     {
 434         if (ext->last_report)
 435             memcpy(buffer, ext->last_report, ext->last_report_size);
 436         *out_length = ext->last_report_size;
 437         return STATUS_SUCCESS;
 438     }
 439 }
 440
 441 NTSTATUS WINAPI hid_internal_dispatch(DEVICE_OBJECT *device, IRP *irp)
 442 {
 443     NTSTATUS status = irp->IoStatus.u.Status;
 444     IO_STACK_LOCATION *irpsp = IoGetCurrentIrpStackLocation(irp);
 445     struct device_extension *ext = (struct device_extension *)device->DeviceExtension;
 446
 447     TRACE("(%p, %p)\n", device, irp);
 448
 449     switch (irpsp->Parameters.DeviceIoControl.IoControlCode)
 450     {
 451         case IOCTL_HID_GET_DEVICE_ATTRIBUTES:
 452         {
 453             HID_DEVICE_ATTRIBUTES *attr = (HID_DEVICE_ATTRIBUTES *)irp->UserBuffer;
 454             TRACE("IOCTL_HID_GET_DEVICE_ATTRIBUTES\n");
 455
 456             if (irpsp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(*attr))
 457             {
 458                 irp->IoStatus.u.Status = status = STATUS_BUFFER_TOO_SMALL;
 459                 break;
 460             }
 461
 462             memset(attr, 0, sizeof(*attr));
 463             attr->Size = sizeof(*attr);
 464             attr->VendorID = ext->vid;
 465             attr->ProductID = ext->pid;
 466             attr->VersionNumber = ext->version;
 467
 468             irp->IoStatus.u.Status = status = STATUS_SUCCESS;
 469             irp->IoStatus.Information = sizeof(*attr);
 470             break;
 471         }
 472         case IOCTL_HID_GET_DEVICE_DESCRIPTOR:
 473         {
 474             HID_DESCRIPTOR *descriptor = (HID_DESCRIPTOR *)irp->UserBuffer;
 475             DWORD length;
 476             TRACE("IOCTL_HID_GET_DEVICE_DESCRIPTOR\n");
 477
 478             if (irpsp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(*descriptor))
 479             {
 480                 irp->IoStatus.u.Status = status = STATUS_BUFFER_TOO_SMALL;
 481                 break;
 482             }
 483
 484             status = ext->vtbl->get_reportdescriptor(device, NULL, 0, &length);
 485             if (status != STATUS_SUCCESS && status != STATUS_BUFFER_TOO_SMALL)
 486             {
 487                 WARN("Failed to get platform report descriptor length\n");
 488                 irp->IoStatus.u.Status = status;
 489                 break;
 490             }
 491
 492             memset(descriptor, 0, sizeof(*descriptor));
 493             descriptor->bLength = sizeof(*descriptor);
 494             descriptor->bDescriptorType = HID_HID_DESCRIPTOR_TYPE;
 495             descriptor->bcdHID = HID_REVISION;
 496             descriptor->bCountry = 0;
 497             descriptor->bNumDescriptors = 1;
 498             descriptor->DescriptorList[0].bReportType = HID_REPORT_DESCRIPTOR_TYPE;
 499             descriptor->DescriptorList[0].wReportLength = length;
 500
 501             irp->IoStatus.u.Status = status = STATUS_SUCCESS;
 502             irp->IoStatus.Information = sizeof(*descriptor);
 503             break;
 504         }
 505         case IOCTL_HID_GET_REPORT_DESCRIPTOR:
 506         {
 507             DWORD length = irpsp->Parameters.DeviceIoControl.OutputBufferLength;
 508             TRACE("IOCTL_HID_GET_REPORT_DESCRIPTOR\n");
 509
 510             irp->IoStatus.u.Status = status = ext->vtbl->get_reportdescriptor(device, irp->UserBuffer, length, &length);
 511             irp->IoStatus.Information = length;
 512             break;
 513         }
 514         case IOCTL_HID_GET_STRING:
 515         {
 516             DWORD length = irpsp->Parameters.DeviceIoControl.OutputBufferLength / sizeof(WCHAR);
 517             DWORD index = (ULONG_PTR)irpsp->Parameters.DeviceIoControl.Type3InputBuffer;
 518             TRACE("IOCTL_HID_GET_STRING[%08x]\n", index);
 519
 520             irp->IoStatus.u.Status = status = ext->vtbl->get_string(device, index, (WCHAR *)irp->UserBuffer, length);
 521             if (status == STATUS_SUCCESS)
 522                 irp->IoStatus.Information = (strlenW((WCHAR *)irp->UserBuffer) + 1) * sizeof(WCHAR);
 523             break;
 524         }
 525         case IOCTL_HID_GET_INPUT_REPORT:
 526         {
 527             HID_XFER_PACKET *packet = (HID_XFER_PACKET*)(irp->UserBuffer);
 528             TRACE_(hid_report)("IOCTL_HID_GET_INPUT_REPORT\n");
 529             EnterCriticalSection(&ext->report_cs);
 530             status = ext->vtbl->begin_report_processing(device);
 531             if (status != STATUS_SUCCESS)
 532             {
 533                 irp->IoStatus.u.Status = status;
 534                 LeaveCriticalSection(&ext->report_cs);
 535                 break;
 536             }
 537
 538             irp->IoStatus.u.Status = status = deliver_last_report(ext,
 539                 packet->reportBufferLen, packet->reportBuffer,
 540                 &irp->IoStatus.Information);
 541
 542             if (status == STATUS_SUCCESS)
 543                 packet->reportBufferLen = irp->IoStatus.Information;
 544             LeaveCriticalSection(&ext->report_cs);
 545             break;
 546         }
 547         case IOCTL_HID_READ_REPORT:
 548         {
 549             TRACE_(hid_report)("IOCTL_HID_READ_REPORT\n");
 550             EnterCriticalSection(&ext->report_cs);
 551             status = ext->vtbl->begin_report_processing(device);
 552             if (status != STATUS_SUCCESS)
 553             {
 554                 irp->IoStatus.u.Status = status;
 555                 LeaveCriticalSection(&ext->report_cs);
 556                 break;
 557             }
 558             if (!ext->last_report_read)
 559             {
 560                 irp->IoStatus.u.Status = status = deliver_last_report(ext,
 561                     irpsp->Parameters.DeviceIoControl.OutputBufferLength,
 562                     irp->UserBuffer, &irp->IoStatus.Information);
 563                 ext->last_report_read = TRUE;
 564             }
 565             else
 566             {
 567                 InsertTailList(&ext->irp_queue, &irp->Tail.Overlay.s.ListEntry);
 568                 status = STATUS_PENDING;
 569             }
 570             LeaveCriticalSection(&ext->report_cs);
 571             break;
 572         }
 573         case IOCTL_HID_SET_OUTPUT_REPORT:
 574         case IOCTL_HID_WRITE_REPORT:
 575         {
 576             HID_XFER_PACKET *packet = (HID_XFER_PACKET*)(irp->UserBuffer);
 577             TRACE_(hid_report)("IOCTL_HID_WRITE_REPORT / IOCTL_HID_SET_OUTPUT_REPORT\n");
 578             irp->IoStatus.u.Status = status = ext->vtbl->set_output_report(
 579                 device, packet->reportId, packet->reportBuffer,
 580                 packet->reportBufferLen, &irp->IoStatus.Information);
 581             break;
 582         }
 583         case IOCTL_HID_GET_FEATURE:
 584         {
 585             HID_XFER_PACKET *packet = (HID_XFER_PACKET*)(irp->UserBuffer);
 586             TRACE_(hid_report)("IOCTL_HID_GET_FEATURE\n");
 587             irp->IoStatus.u.Status = status = ext->vtbl->get_feature_report(
 588                 device, packet->reportId, packet->reportBuffer,
 589                 packet->reportBufferLen, &irp->IoStatus.Information);
 590             packet->reportBufferLen = irp->IoStatus.Information;
 591             break;
 592         }
 593         case IOCTL_HID_SET_FEATURE:
 594         {
 595             HID_XFER_PACKET *packet = (HID_XFER_PACKET*)(irp->UserBuffer);
 596             TRACE_(hid_report)("IOCTL_HID_SET_FEATURE\n");
 597             irp->IoStatus.u.Status = status = ext->vtbl->set_feature_report(
 598                 device, packet->reportId, packet->reportBuffer,
 599                 packet->reportBufferLen, &irp->IoStatus.Information);
 600             break;
 601         }
 602         default:
 603         {
 604             ULONG code = irpsp->Parameters.DeviceIoControl.IoControlCode;
 605             FIXME("Unsupported ioctl %x (device=%x access=%x func=%x method=%x)\n",
 606                   code, code >> 16, (code >> 14) & 3, (code >> 2) & 0xfff, code & 3);
 607             break;
 608         }
 609     }
 610
 611     if (status != STATUS_PENDING)
 612         IoCompleteRequest(irp, IO_NO_INCREMENT);
 613
 614     return status;
 615 }
 616
 617 void process_hid_report(DEVICE_OBJECT *device, BYTE *report, DWORD length)
 618 {
 619     struct device_extension *ext = (struct device_extension*)device->DeviceExtension;
 620     IRP *irp;
 621     LIST_ENTRY *entry;
 622
 623     if (!length || !report)
 624         return;
 625
 626     EnterCriticalSection(&ext->report_cs);
 627     if (length > ext->buffer_size)
 628     {
 629         HeapFree(GetProcessHeap(), 0, ext->last_report);
 630         ext->last_report = HeapAlloc(GetProcessHeap(), 0, length);
 631         if (!ext->last_report)
 632         {
 633             ERR_(hid_report)("Failed to alloc last report\n");
 634             ext->buffer_size = 0;
 635             ext->last_report_size = 0;
 636             ext->last_report_read = TRUE;
 637             LeaveCriticalSection(&ext->report_cs);
 638             return;
 639         }
 640         else
 641             ext->buffer_size = length;
 642     }
 643
 644     memcpy(ext->last_report, report, length);
 645     ext->last_report_size = length;
 646     ext->last_report_read = FALSE;
 647
 648     while ((entry = RemoveHeadList(&ext->irp_queue)) != &ext->irp_queue)
 649     {
 650         IO_STACK_LOCATION *irpsp;
 651         TRACE_(hid_report)("Processing Request\n");
 652         irp = CONTAINING_RECORD(entry, IRP, Tail.Overlay.s.ListEntry);
 653         irpsp = IoGetCurrentIrpStackLocation(irp);
 654         irp->IoStatus.u.Status = deliver_last_report(ext,
 655             irpsp->Parameters.DeviceIoControl.OutputBufferLength,
 656             irp->UserBuffer, &irp->IoStatus.Information);
 657         ext->last_report_read = TRUE;
 658         IoCompleteRequest(irp, IO_NO_INCREMENT);
 659     }
 660     LeaveCriticalSection(&ext->report_cs);
 661 }
 662
 663 DWORD check_bus_option(UNICODE_STRING *registry_path, const UNICODE_STRING *option, DWORD default_value)
 664 {
 665     OBJECT_ATTRIBUTES attr;
 666     HANDLE key;
 667     DWORD output = default_value;
 668
 669     InitializeObjectAttributes(&attr, registry_path, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL);
 670     if (NtOpenKey(&key, KEY_ALL_ACCESS, &attr) == STATUS_SUCCESS)
 671     {
 672         DWORD size;
 673         char buffer[FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION, Data[sizeof(DWORD)])];
 674
 675         KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION*)buffer;
 676
 677         if (NtQueryValueKey(key, option, KeyValuePartialInformation, info, sizeof(buffer), &size) == STATUS_SUCCESS)
 678         {
 679             if (info->Type == REG_DWORD)
 680                 output = *(DWORD*)info->Data;
 681         }
 682
 683         NtClose(key);
 684     }
 685
 686     return output;
 687 }
 688
 689 BOOL is_xbox_gamepad(WORD vid, WORD pid)
 690 {
 691     int i;
 692
 693     if (vid != VID_MICROSOFT)
 694         return FALSE;
 695
 696     for (i = 0; i < ARRAY_SIZE(PID_XBOX_CONTROLLERS); i++)
 697         if (pid == PID_XBOX_CONTROLLERS[i]) return TRUE;
 698
 699     return FALSE;
 700 }
 701
 702 static void WINAPI driver_unload(DRIVER_OBJECT *driver)
 703 {
 704     udev_driver_unload();
 705     iohid_driver_unload();
 706     sdl_driver_unload();
 707 }
 708
 709 NTSTATUS WINAPI DriverEntry( DRIVER_OBJECT *driver, UNICODE_STRING *path )
 710 {
 711     static const WCHAR udevW[] = {'\\','D','r','i','v','e','r','\\','U','D','E','V',0};
 712     static UNICODE_STRING udev = {sizeof(udevW) - sizeof(WCHAR), sizeof(udevW), (WCHAR *)udevW};
 713     static const WCHAR iohidW[] = {'\\','D','r','i','v','e','r','\\','I','O','H','I','D',0};
 714     static UNICODE_STRING iohid = {sizeof(iohidW) - sizeof(WCHAR), sizeof(iohidW), (WCHAR *)iohidW};
 715     static const WCHAR sdlW[] = {'\\','D','r','i','v','e','r','\\','S','D','L','J','O','Y',0};
 716     static UNICODE_STRING sdl = {sizeof(sdlW) - sizeof(WCHAR), sizeof(sdlW), (WCHAR *)sdlW};
 717     static const WCHAR SDL_enabledW[] = {'E','n','a','b','l','e',' ','S','D','L',0};
 718     static const UNICODE_STRING SDL_enabled = {sizeof(SDL_enabledW) - sizeof(WCHAR), sizeof(SDL_enabledW), (WCHAR*)SDL_enabledW};
 719
 720     TRACE( "(%p, %s)\n", driver, debugstr_w(path->Buffer) );
 721
 722     if (check_bus_option(path, &SDL_enabled, 1))
 723     {
 724         if (IoCreateDriver(&sdl, sdl_driver_init) == STATUS_SUCCESS)
 725             return STATUS_SUCCESS;
 726     }
 727     IoCreateDriver(&udev, udev_driver_init);
 728     IoCreateDriver(&iohid, iohid_driver_init);
 729
 730     driver->DriverUnload = driver_unload;
 731
 732     return STATUS_SUCCESS;
 733 }