sys/dev/drm/drm_drv.c

   1 /*-
   2  * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
   3  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rickard E. (Rik) Faith <faith@valinux.com>
  27  *    Gareth Hughes <gareth@valinux.com>
  28  *
  29  */
  30
  31 #include <sys/cdefs.h>
  32 __FBSDID("$FreeBSD$");
  33
  34 /** @file drm_drv.c
  35  * The catch-all file for DRM device support, including module setup/teardown,
  36  * open/close, and ioctl dispatch.
  37  */
  38
  39
  40 #include <sys/limits.h>
  41 #include "dev/drm/drmP.h"
  42 #include "dev/drm/drm.h"
  43 #include "dev/drm/drm_sarea.h"
  44
  45 #ifdef DRM_DEBUG_DEFAULT_ON
  46 int drm_debug_flag = 1;
  47 #else
  48 int drm_debug_flag = 0;
  49 #endif
  50
  51 static int drm_load(struct drm_device *dev);
  52 static void drm_unload(struct drm_device *dev);
  53 static drm_pci_id_list_t *drm_find_description(int vendor, int device,
  54     drm_pci_id_list_t *idlist);
  55
  56 #define DRIVER_SOFTC(unit) \
  57         ((struct drm_device *)devclass_get_softc(drm_devclass, unit))
  58
  59 MODULE_VERSION(drm, 1);
  60 MODULE_DEPEND(drm, agp, 1, 1, 1);
  61 MODULE_DEPEND(drm, pci, 1, 1, 1);
  62 MODULE_DEPEND(drm, mem, 1, 1, 1);
  63
  64 static drm_ioctl_desc_t           drm_ioctls[256] = {
  65         DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
  66         DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
  67         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
  68         DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
  69         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
  70         DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
  71         DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
  72         DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
  73
  74         DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  75         DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  76         DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  77         DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  78
  79         DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  80         DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
  81
  82         DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  83         DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
  84
  85         DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
  86         DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  87         DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  88         DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
  89         DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  90         DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  91         DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
  92
  93         DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  94         DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  95
  96         DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
  97         DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
  98
  99         DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
 100
 101         DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 102         DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 103         DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
 104         DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
 105         DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
 106         DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
 107
 108         DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 109
 110         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 111         DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 112         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 113         DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
 114         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 115         DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 116         DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 117         DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 118
 119         DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 120         DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 121         DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
 122         DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
 123         DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 124 };
 125
 126 static struct cdevsw drm_cdevsw = {
 127         .d_version =    D_VERSION,
 128         .d_open =       drm_open,
 129         .d_read =       drm_read,
 130         .d_ioctl =      drm_ioctl,
 131         .d_poll =       drm_poll,
 132         .d_mmap =       drm_mmap,
 133         .d_name =       "drm",
 134         .d_flags =      D_TRACKCLOSE
 135 };
 136
 137 static int drm_msi = 1; /* Enable by default. */
 138 TUNABLE_INT("hw.drm.msi", &drm_msi);
 139
 140 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
 141         {0x8086, 0x2772}, /* Intel i945G        */ \
 142         {0x8086, 0x27A2}, /* Intel i945GM       */ \
 143         {0x8086, 0x27AE}, /* Intel i945GME      */ \
 144         {0, 0}
 145 };
 146
 147 static int drm_msi_is_blacklisted(int vendor, int device)
 148 {
 149         int i = 0;
 150
 151         for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
 152                 if ((drm_msi_blacklist[i].vendor == vendor) &&
 153                     (drm_msi_blacklist[i].device == device)) {
 154                         return 1;
 155                 }
 156         }
 157
 158         return 0;
 159 }
 160
 161 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
 162 {
 163         drm_pci_id_list_t *id_entry;
 164         int vendor, device;
 165 #if __FreeBSD_version < 700010
 166         device_t realdev;
 167
 168         if (!strcmp(device_get_name(kdev), "drmsub"))
 169                 realdev = device_get_parent(kdev);
 170         else
 171                 realdev = kdev;
 172         vendor = pci_get_vendor(realdev);
 173         device = pci_get_device(realdev);
 174 #else
 175         vendor = pci_get_vendor(kdev);
 176         device = pci_get_device(kdev);
 177 #endif
 178
 179         if (pci_get_class(kdev) != PCIC_DISPLAY
 180             || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
 181                 return ENXIO;
 182
 183         id_entry = drm_find_description(vendor, device, idlist);
 184         if (id_entry != NULL) {
 185                 if (!device_get_desc(kdev)) {
 186                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
 187                         device_set_desc(kdev, id_entry->name);
 188                 }
 189                 return 0;
 190         }
 191
 192         return ENXIO;
 193 }
 194
 195 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
 196 {
 197         struct drm_device *dev;
 198         drm_pci_id_list_t *id_entry;
 199         int unit, msicount;
 200
 201         unit = device_get_unit(kdev);
 202         dev = device_get_softc(kdev);
 203
 204 #if __FreeBSD_version < 700010
 205         if (!strcmp(device_get_name(kdev), "drmsub"))
 206                 dev->device = device_get_parent(kdev);
 207         else
 208                 dev->device = kdev;
 209 #else
 210         dev->device = kdev;
 211 #endif
 212         dev->devnode = make_dev(&drm_cdevsw,
 213                         unit,
 214                         DRM_DEV_UID,
 215                         DRM_DEV_GID,
 216                         DRM_DEV_MODE,
 217                         "dri/card%d", unit);
 218
 219 #if __FreeBSD_version >= 700053
 220         dev->pci_domain = pci_get_domain(dev->device);
 221 #else
 222         dev->pci_domain = 0;
 223 #endif
 224         dev->pci_bus = pci_get_bus(dev->device);
 225         dev->pci_slot = pci_get_slot(dev->device);
 226         dev->pci_func = pci_get_function(dev->device);
 227
 228         dev->pci_vendor = pci_get_vendor(dev->device);
 229         dev->pci_device = pci_get_device(dev->device);
 230
 231         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
 232                 if (drm_msi &&
 233                     !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
 234                         msicount = pci_msi_count(dev->device);
 235                         DRM_DEBUG("MSI count = %d\n", msicount);
 236                         if (msicount > 1)
 237                                 msicount = 1;
 238
 239                         if (pci_alloc_msi(dev->device, &msicount) == 0) {
 240                                 DRM_INFO("MSI enabled %d message(s)\n",
 241                                     msicount);
 242                                 dev->msi_enabled = 1;
 243                                 dev->irqrid = 1;
 244                         }
 245                 }
 246
 247                 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
 248                     &dev->irqrid, RF_SHAREABLE);
 249                 if (!dev->irqr) {
 250                         return ENOENT;
 251                 }
 252
 253                 dev->irq = (int) rman_get_start(dev->irqr);
 254         }
 255
 256         mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
 257         mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
 258         mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
 259         mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
 260
 261         id_entry = drm_find_description(dev->pci_vendor,
 262             dev->pci_device, idlist);
 263         dev->id_entry = id_entry;
 264
 265         return drm_load(dev);
 266 }
 267
 268 int drm_detach(device_t kdev)
 269 {
 270         struct drm_device *dev;
 271
 272         dev = device_get_softc(kdev);
 273
 274         drm_unload(dev);
 275
 276         bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr);
 277
 278         if (dev->msi_enabled) {
 279                 pci_release_msi(dev->device);
 280                 DRM_INFO("MSI released\n");
 281         }
 282
 283         return 0;
 284 }
 285
 286 #ifndef DRM_DEV_NAME
 287 #define DRM_DEV_NAME "drm"
 288 #endif
 289
 290 devclass_t drm_devclass;
 291
 292 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 293     drm_pci_id_list_t *idlist)
 294 {
 295         int i = 0;
 296
 297         for (i = 0; idlist[i].vendor != 0; i++) {
 298                 if ((idlist[i].vendor == vendor) &&
 299                     ((idlist[i].device == device) ||
 300                     (idlist[i].device == 0))) {
 301                         return &idlist[i];
 302                 }
 303         }
 304         return NULL;
 305 }
 306
 307 static int drm_firstopen(struct drm_device *dev)
 308 {
 309         drm_local_map_t *map;
 310         int i;
 311
 312         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 313
 314         /* prebuild the SAREA */
 315         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
 316             _DRM_CONTAINS_LOCK, &map);
 317         if (i != 0)
 318                 return i;
 319
 320         if (dev->driver->firstopen)
 321                 dev->driver->firstopen(dev);
 322
 323         dev->buf_use = 0;
 324
 325         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
 326                 i = drm_dma_setup(dev);
 327                 if (i != 0)
 328                         return i;
 329         }
 330
 331         for (i = 0; i < DRM_HASH_SIZE; i++) {
 332                 dev->magiclist[i].head = NULL;
 333                 dev->magiclist[i].tail = NULL;
 334         }
 335
 336         dev->lock.lock_queue = 0;
 337         dev->irq_enabled = 0;
 338         dev->context_flag = 0;
 339         dev->last_context = 0;
 340         dev->if_version = 0;
 341
 342         dev->buf_sigio = NULL;
 343
 344         DRM_DEBUG("\n");
 345
 346         return 0;
 347 }
 348
 349 static int drm_lastclose(struct drm_device *dev)
 350 {
 351         drm_magic_entry_t *pt, *next;
 352         drm_local_map_t *map, *mapsave;
 353         int i;
 354
 355         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 356
 357         DRM_DEBUG("\n");
 358
 359         if (dev->driver->lastclose != NULL)
 360                 dev->driver->lastclose(dev);
 361
 362         if (dev->irq_enabled)
 363                 drm_irq_uninstall(dev);
 364
 365         if (dev->unique) {
 366                 free(dev->unique, DRM_MEM_DRIVER);
 367                 dev->unique = NULL;
 368                 dev->unique_len = 0;
 369         }
 370         /* Clear pid list */
 371         for (i = 0; i < DRM_HASH_SIZE; i++) {
 372                 for (pt = dev->magiclist[i].head; pt; pt = next) {
 373                         next = pt->next;
 374                         free(pt, DRM_MEM_MAGIC);
 375                 }
 376                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 377         }
 378
 379         DRM_UNLOCK();
 380         drm_drawable_free_all(dev);
 381         DRM_LOCK();
 382
 383         /* Clear AGP information */
 384         if (dev->agp) {
 385                 drm_agp_mem_t *entry;
 386                 drm_agp_mem_t *nexte;
 387
 388                 /* Remove AGP resources, but leave dev->agp intact until
 389                  * drm_unload is called.
 390                  */
 391                 for (entry = dev->agp->memory; entry; entry = nexte) {
 392                         nexte = entry->next;
 393                         if (entry->bound)
 394                                 drm_agp_unbind_memory(entry->handle);
 395                         drm_agp_free_memory(entry->handle);
 396                         free(entry, DRM_MEM_AGPLISTS);
 397                 }
 398                 dev->agp->memory = NULL;
 399
 400                 if (dev->agp->acquired)
 401                         drm_agp_release(dev);
 402
 403                 dev->agp->acquired = 0;
 404                 dev->agp->enabled  = 0;
 405         }
 406         if (dev->sg != NULL) {
 407                 drm_sg_cleanup(dev->sg);
 408                 dev->sg = NULL;
 409         }
 410
 411         TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
 412                 if (!(map->flags & _DRM_DRIVER))
 413                         drm_rmmap(dev, map);
 414         }
 415
 416         drm_dma_takedown(dev);
 417         if (dev->lock.hw_lock) {
 418                 dev->lock.hw_lock = NULL; /* SHM removed */
 419                 dev->lock.file_priv = NULL;
 420                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 421         }
 422
 423         return 0;
 424 }
 425
 426 static int drm_load(struct drm_device *dev)
 427 {
 428         int i, retcode;
 429
 430         DRM_DEBUG("\n");
 431
 432         TAILQ_INIT(&dev->maplist);
 433
 434         drm_mem_init();
 435         drm_sysctl_init(dev);
 436         TAILQ_INIT(&dev->files);
 437
 438         dev->counters  = 6;
 439         dev->types[0]  = _DRM_STAT_LOCK;
 440         dev->types[1]  = _DRM_STAT_OPENS;
 441         dev->types[2]  = _DRM_STAT_CLOSES;
 442         dev->types[3]  = _DRM_STAT_IOCTLS;
 443         dev->types[4]  = _DRM_STAT_LOCKS;
 444         dev->types[5]  = _DRM_STAT_UNLOCKS;
 445
 446         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 447                 atomic_set(&dev->counts[i], 0);
 448
 449         if (dev->driver->load != NULL) {
 450                 DRM_LOCK();
 451                 /* Shared code returns -errno. */
 452                 retcode = -dev->driver->load(dev,
 453                     dev->id_entry->driver_private);
 454                 if (pci_enable_busmaster(dev->device))
 455                         DRM_ERROR("Request to enable bus-master failed.\n");
 456                 DRM_UNLOCK();
 457                 if (retcode != 0)
 458                         goto error;
 459         }
 460
 461         if (drm_core_has_AGP(dev)) {
 462                 if (drm_device_is_agp(dev))
 463                         dev->agp = drm_agp_init();
 464                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 465                     dev->agp == NULL) {
 466                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 467                             "AGP.\n");
 468                         retcode = ENOMEM;
 469                         goto error;
 470                 }
 471                 if (dev->agp != NULL) {
 472                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
 473                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
 474                                 dev->agp->mtrr = 1;
 475                 }
 476         }
 477
 478         retcode = drm_ctxbitmap_init(dev);
 479         if (retcode != 0) {
 480                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 481                 goto error;
 482         }
 483
 484         dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
 485         if (dev->drw_unrhdr == NULL) {
 486                 DRM_ERROR("Couldn't allocate drawable number allocator\n");
 487                 goto error;
 488         }
 489
 490         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 491             dev->driver->name,
 492             dev->driver->major,
 493             dev->driver->minor,
 494             dev->driver->patchlevel,
 495             dev->driver->date);
 496
 497         return 0;
 498
 499 error:
 500         drm_sysctl_cleanup(dev);
 501         DRM_LOCK();
 502         drm_lastclose(dev);
 503         DRM_UNLOCK();
 504         destroy_dev(dev->devnode);
 505
 506         mtx_destroy(&dev->drw_lock);
 507         mtx_destroy(&dev->vbl_lock);
 508         mtx_destroy(&dev->irq_lock);
 509         mtx_destroy(&dev->dev_lock);
 510
 511         return retcode;
 512 }
 513
 514 static void drm_unload(struct drm_device *dev)
 515 {
 516         int i;
 517
 518         DRM_DEBUG("\n");
 519
 520         drm_sysctl_cleanup(dev);
 521         destroy_dev(dev->devnode);
 522
 523         drm_ctxbitmap_cleanup(dev);
 524
 525         if (dev->agp && dev->agp->mtrr) {
 526                 int __unused retcode;
 527
 528                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
 529                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
 530                 DRM_DEBUG("mtrr_del = %d", retcode);
 531         }
 532
 533         drm_vblank_cleanup(dev);
 534
 535         DRM_LOCK();
 536         drm_lastclose(dev);
 537         DRM_UNLOCK();
 538
 539         /* Clean up PCI resources allocated by drm_bufs.c.  We're not really
 540          * worried about resource consumption while the DRM is inactive (between
 541          * lastclose and firstopen or unload) because these aren't actually
 542          * taking up KVA, just keeping the PCI resource allocated.
 543          */
 544         for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
 545                 if (dev->pcir[i] == NULL)
 546                         continue;
 547                 bus_release_resource(dev->device, SYS_RES_MEMORY,
 548                     dev->pcirid[i], dev->pcir[i]);
 549                 dev->pcir[i] = NULL;
 550         }
 551
 552         if (dev->agp) {
 553                 free(dev->agp, DRM_MEM_AGPLISTS);
 554                 dev->agp = NULL;
 555         }
 556
 557         if (dev->driver->unload != NULL) {
 558                 DRM_LOCK();
 559                 dev->driver->unload(dev);
 560                 DRM_UNLOCK();
 561         }
 562
 563         delete_unrhdr(dev->drw_unrhdr);
 564
 565         drm_mem_uninit();
 566
 567         if (pci_disable_busmaster(dev->device))
 568                 DRM_ERROR("Request to disable bus-master failed.\n");
 569
 570         mtx_destroy(&dev->drw_lock);
 571         mtx_destroy(&dev->vbl_lock);
 572         mtx_destroy(&dev->irq_lock);
 573         mtx_destroy(&dev->dev_lock);
 574 }
 575
 576 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 577 {
 578         struct drm_version *version = data;
 579         int len;
 580
 581 #define DRM_COPY( name, value )                                         \
 582         len = strlen( value );                                          \
 583         if ( len > name##_len ) len = name##_len;                       \
 584         name##_len = strlen( value );                                   \
 585         if ( len && name ) {                                            \
 586                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 587                         return EFAULT;                          \
 588         }
 589
 590         version->version_major          = dev->driver->major;
 591         version->version_minor          = dev->driver->minor;
 592         version->version_patchlevel     = dev->driver->patchlevel;
 593
 594         DRM_COPY(version->name, dev->driver->name);
 595         DRM_COPY(version->date, dev->driver->date);
 596         DRM_COPY(version->desc, dev->driver->desc);
 597
 598         return 0;
 599 }
 600
 601 int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
 602 {
 603         struct drm_device *dev = NULL;
 604         int retcode = 0;
 605
 606         dev = DRIVER_SOFTC(dev2unit(kdev));
 607
 608         DRM_DEBUG("open_count = %d\n", dev->open_count);
 609
 610         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
 611
 612         if (!retcode) {
 613                 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
 614                 DRM_LOCK();
 615                 device_busy(dev->device);
 616                 if (!dev->open_count++)
 617                         retcode = drm_firstopen(dev);
 618                 DRM_UNLOCK();
 619         }
 620
 621         return retcode;
 622 }
 623
 624 void drm_close(void *data)
 625 {
 626         struct drm_file *file_priv = data;
 627         struct drm_device *dev = file_priv->dev;
 628         int retcode = 0;
 629
 630         DRM_DEBUG("open_count = %d\n", dev->open_count);
 631
 632         DRM_LOCK();
 633
 634         if (dev->driver->preclose != NULL)
 635                 dev->driver->preclose(dev, file_priv);
 636
 637         /* ========================================================
 638          * Begin inline drm_release
 639          */
 640
 641         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 642             DRM_CURRENTPID, (long)dev->device, dev->open_count);
 643
 644         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 645             && dev->lock.file_priv == file_priv) {
 646                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 647                           DRM_CURRENTPID,
 648                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 649                 if (dev->driver->reclaim_buffers_locked != NULL)
 650                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 651
 652                 drm_lock_free(&dev->lock,
 653                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 654
 655                                 /* FIXME: may require heavy-handed reset of
 656                                    hardware at this point, possibly
 657                                    processed via a callback to the X
 658                                    server. */
 659         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 660             dev->lock.hw_lock != NULL) {
 661                 /* The lock is required to reclaim buffers */
 662                 for (;;) {
 663                         if (!dev->lock.hw_lock) {
 664                                 /* Device has been unregistered */
 665                                 retcode = EINTR;
 666                                 break;
 667                         }
 668                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 669                                 dev->lock.file_priv = file_priv;
 670                                 dev->lock.lock_time = jiffies;
 671                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 672                                 break;  /* Got lock */
 673                         }
 674                         /* Contention */
 675                         retcode = mtx_sleep((void *)&dev->lock.lock_queue,
 676                             &dev->dev_lock, PCATCH, "drmlk2", 0);
 677                         if (retcode)
 678                                 break;
 679                 }
 680                 if (retcode == 0) {
 681                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 682                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
 683                 }
 684         }
 685
 686         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
 687             !dev->driver->reclaim_buffers_locked)
 688                 drm_reclaim_buffers(dev, file_priv);
 689
 690         funsetown(&dev->buf_sigio);
 691
 692         if (dev->driver->postclose != NULL)
 693                 dev->driver->postclose(dev, file_priv);
 694         TAILQ_REMOVE(&dev->files, file_priv, link);
 695         free(file_priv, DRM_MEM_FILES);
 696
 697         /* ========================================================
 698          * End inline drm_release
 699          */
 700
 701         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
 702         device_unbusy(dev->device);
 703         if (--dev->open_count == 0) {
 704                 retcode = drm_lastclose(dev);
 705         }
 706
 707         DRM_UNLOCK();
 708 }
 709
 710 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 711  */
 712 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
 713     DRM_STRUCTPROC *p)
 714 {
 715         struct drm_device *dev = drm_get_device_from_kdev(kdev);
 716         int retcode = 0;
 717         drm_ioctl_desc_t *ioctl;
 718         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 719         int nr = DRM_IOCTL_NR(cmd);
 720         int is_driver_ioctl = 0;
 721         struct drm_file *file_priv;
 722
 723         retcode = devfs_get_cdevpriv((void **)&file_priv);
 724         if (retcode != 0) {
 725                 DRM_ERROR("can't find authenticator\n");
 726                 return EINVAL;
 727         }
 728
 729         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 730         ++file_priv->ioctl_count;
 731
 732         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 733             DRM_CURRENTPID, cmd, nr, (long)dev->device,
 734             file_priv->authenticated);
 735
 736         switch (cmd) {
 737         case FIONBIO:
 738         case FIOASYNC:
 739                 return 0;
 740
 741         case FIOSETOWN:
 742                 return fsetown(*(int *)data, &dev->buf_sigio);
 743
 744         case FIOGETOWN:
 745                 *(int *) data = fgetown(&dev->buf_sigio);
 746                 return 0;
 747         }
 748
 749         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 750                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 751                 return EINVAL;
 752         }
 753
 754         ioctl = &drm_ioctls[nr];
 755         /* It's not a core DRM ioctl, try driver-specific. */
 756         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 757                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 758                 nr -= DRM_COMMAND_BASE;
 759                 if (nr > dev->driver->max_ioctl) {
 760                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
 761                             nr, dev->driver->max_ioctl);
 762                         return EINVAL;
 763                 }
 764                 ioctl = &dev->driver->ioctls[nr];
 765                 is_driver_ioctl = 1;
 766         }
 767         func = ioctl->func;
 768
 769         if (func == NULL) {
 770                 DRM_DEBUG("no function\n");
 771                 return EINVAL;
 772         }
 773
 774         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 775             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 776             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 777                 return EACCES;
 778
 779         if (is_driver_ioctl) {
 780                 DRM_LOCK();
 781                 /* shared code returns -errno */
 782                 retcode = -func(dev, data, file_priv);
 783                 DRM_UNLOCK();
 784         } else {
 785                 retcode = func(dev, data, file_priv);
 786         }
 787
 788         if (retcode != 0)
 789                 DRM_DEBUG("    returning %d\n", retcode);
 790
 791         return retcode;
 792 }
 793
 794 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 795 {
 796         drm_local_map_t *map;
 797
 798         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 799         TAILQ_FOREACH(map, &dev->maplist, link) {
 800                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
 801                         return map;
 802         }
 803
 804         return NULL;
 805 }
 806
 807 #if DRM_LINUX
 808
 809 #include <sys/sysproto.h>
 810
 811 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
 812
 813 #define LINUX_IOCTL_DRM_MIN             0x6400
 814 #define LINUX_IOCTL_DRM_MAX             0x64ff
 815
 816 static linux_ioctl_function_t drm_linux_ioctl;
 817 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
 818     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
 819
 820 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
 821     linux_ioctl_register_handler, &drm_handler);
 822 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
 823     linux_ioctl_unregister_handler, &drm_handler);
 824
 825 /* The bits for in/out are switched on Linux */
 826 #define LINUX_IOC_IN    IOC_OUT
 827 #define LINUX_IOC_OUT   IOC_IN
 828
 829 static int
 830 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
 831 {
 832         int error;
 833         int cmd = args->cmd;
 834
 835         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
 836         if (cmd & LINUX_IOC_IN)
 837                 args->cmd |= IOC_IN;
 838         if (cmd & LINUX_IOC_OUT)
 839                 args->cmd |= IOC_OUT;
 840
 841         error = ioctl(p, (struct ioctl_args *)args);
 842
 843         return error;
 844 }
 845 #endif /* DRM_LINUX */