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         if (dev->irqr) {
 277                 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid,
 278                     dev->irqr);
 279
 280                 if (dev->msi_enabled) {
 281                         pci_release_msi(dev->device);
 282                         DRM_INFO("MSI released\n");
 283                 }
 284         }
 285
 286         return 0;
 287 }
 288
 289 #ifndef DRM_DEV_NAME
 290 #define DRM_DEV_NAME "drm"
 291 #endif
 292
 293 devclass_t drm_devclass;
 294
 295 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 296     drm_pci_id_list_t *idlist)
 297 {
 298         int i = 0;
 299
 300         for (i = 0; idlist[i].vendor != 0; i++) {
 301                 if ((idlist[i].vendor == vendor) &&
 302                     ((idlist[i].device == device) ||
 303                     (idlist[i].device == 0))) {
 304                         return &idlist[i];
 305                 }
 306         }
 307         return NULL;
 308 }
 309
 310 static int drm_firstopen(struct drm_device *dev)
 311 {
 312         drm_local_map_t *map;
 313         int i;
 314
 315         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 316
 317         /* prebuild the SAREA */
 318         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
 319             _DRM_CONTAINS_LOCK, &map);
 320         if (i != 0)
 321                 return i;
 322
 323         if (dev->driver->firstopen)
 324                 dev->driver->firstopen(dev);
 325
 326         dev->buf_use = 0;
 327
 328         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
 329                 i = drm_dma_setup(dev);
 330                 if (i != 0)
 331                         return i;
 332         }
 333
 334         for (i = 0; i < DRM_HASH_SIZE; i++) {
 335                 dev->magiclist[i].head = NULL;
 336                 dev->magiclist[i].tail = NULL;
 337         }
 338
 339         dev->lock.lock_queue = 0;
 340         dev->irq_enabled = 0;
 341         dev->context_flag = 0;
 342         dev->last_context = 0;
 343         dev->if_version = 0;
 344
 345         dev->buf_sigio = NULL;
 346
 347         DRM_DEBUG("\n");
 348
 349         return 0;
 350 }
 351
 352 static int drm_lastclose(struct drm_device *dev)
 353 {
 354         drm_magic_entry_t *pt, *next;
 355         drm_local_map_t *map, *mapsave;
 356         int i;
 357
 358         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 359
 360         DRM_DEBUG("\n");
 361
 362         if (dev->driver->lastclose != NULL)
 363                 dev->driver->lastclose(dev);
 364
 365         if (dev->irq_enabled)
 366                 drm_irq_uninstall(dev);
 367
 368         if (dev->unique) {
 369                 free(dev->unique, DRM_MEM_DRIVER);
 370                 dev->unique = NULL;
 371                 dev->unique_len = 0;
 372         }
 373         /* Clear pid list */
 374         for (i = 0; i < DRM_HASH_SIZE; i++) {
 375                 for (pt = dev->magiclist[i].head; pt; pt = next) {
 376                         next = pt->next;
 377                         free(pt, DRM_MEM_MAGIC);
 378                 }
 379                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 380         }
 381
 382         DRM_UNLOCK();
 383         drm_drawable_free_all(dev);
 384         DRM_LOCK();
 385
 386         /* Clear AGP information */
 387         if (dev->agp) {
 388                 drm_agp_mem_t *entry;
 389                 drm_agp_mem_t *nexte;
 390
 391                 /* Remove AGP resources, but leave dev->agp intact until
 392                  * drm_unload is called.
 393                  */
 394                 for (entry = dev->agp->memory; entry; entry = nexte) {
 395                         nexte = entry->next;
 396                         if (entry->bound)
 397                                 drm_agp_unbind_memory(entry->handle);
 398                         drm_agp_free_memory(entry->handle);
 399                         free(entry, DRM_MEM_AGPLISTS);
 400                 }
 401                 dev->agp->memory = NULL;
 402
 403                 if (dev->agp->acquired)
 404                         drm_agp_release(dev);
 405
 406                 dev->agp->acquired = 0;
 407                 dev->agp->enabled  = 0;
 408         }
 409         if (dev->sg != NULL) {
 410                 drm_sg_cleanup(dev->sg);
 411                 dev->sg = NULL;
 412         }
 413
 414         TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
 415                 if (!(map->flags & _DRM_DRIVER))
 416                         drm_rmmap(dev, map);
 417         }
 418
 419         drm_dma_takedown(dev);
 420         if (dev->lock.hw_lock) {
 421                 dev->lock.hw_lock = NULL; /* SHM removed */
 422                 dev->lock.file_priv = NULL;
 423                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 424         }
 425
 426         return 0;
 427 }
 428
 429 static int drm_load(struct drm_device *dev)
 430 {
 431         int i, retcode;
 432
 433         DRM_DEBUG("\n");
 434
 435         TAILQ_INIT(&dev->maplist);
 436
 437         drm_mem_init();
 438         drm_sysctl_init(dev);
 439         TAILQ_INIT(&dev->files);
 440
 441         dev->counters  = 6;
 442         dev->types[0]  = _DRM_STAT_LOCK;
 443         dev->types[1]  = _DRM_STAT_OPENS;
 444         dev->types[2]  = _DRM_STAT_CLOSES;
 445         dev->types[3]  = _DRM_STAT_IOCTLS;
 446         dev->types[4]  = _DRM_STAT_LOCKS;
 447         dev->types[5]  = _DRM_STAT_UNLOCKS;
 448
 449         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 450                 atomic_set(&dev->counts[i], 0);
 451
 452         if (dev->driver->load != NULL) {
 453                 DRM_LOCK();
 454                 /* Shared code returns -errno. */
 455                 retcode = -dev->driver->load(dev,
 456                     dev->id_entry->driver_private);
 457                 if (pci_enable_busmaster(dev->device))
 458                         DRM_ERROR("Request to enable bus-master failed.\n");
 459                 DRM_UNLOCK();
 460                 if (retcode != 0)
 461                         goto error;
 462         }
 463
 464         if (drm_core_has_AGP(dev)) {
 465                 if (drm_device_is_agp(dev))
 466                         dev->agp = drm_agp_init();
 467                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 468                     dev->agp == NULL) {
 469                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 470                             "AGP.\n");
 471                         retcode = ENOMEM;
 472                         goto error;
 473                 }
 474                 if (dev->agp != NULL) {
 475                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
 476                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
 477                                 dev->agp->mtrr = 1;
 478                 }
 479         }
 480
 481         retcode = drm_ctxbitmap_init(dev);
 482         if (retcode != 0) {
 483                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 484                 goto error;
 485         }
 486
 487         dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
 488         if (dev->drw_unrhdr == NULL) {
 489                 DRM_ERROR("Couldn't allocate drawable number allocator\n");
 490                 goto error;
 491         }
 492
 493         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 494             dev->driver->name,
 495             dev->driver->major,
 496             dev->driver->minor,
 497             dev->driver->patchlevel,
 498             dev->driver->date);
 499
 500         return 0;
 501
 502 error:
 503         drm_sysctl_cleanup(dev);
 504         DRM_LOCK();
 505         drm_lastclose(dev);
 506         DRM_UNLOCK();
 507         destroy_dev(dev->devnode);
 508
 509         mtx_destroy(&dev->drw_lock);
 510         mtx_destroy(&dev->vbl_lock);
 511         mtx_destroy(&dev->irq_lock);
 512         mtx_destroy(&dev->dev_lock);
 513
 514         return retcode;
 515 }
 516
 517 static void drm_unload(struct drm_device *dev)
 518 {
 519         int i;
 520
 521         DRM_DEBUG("\n");
 522
 523         drm_sysctl_cleanup(dev);
 524         destroy_dev(dev->devnode);
 525
 526         drm_ctxbitmap_cleanup(dev);
 527
 528         if (dev->agp && dev->agp->mtrr) {
 529                 int __unused retcode;
 530
 531                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
 532                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
 533                 DRM_DEBUG("mtrr_del = %d", retcode);
 534         }
 535
 536         drm_vblank_cleanup(dev);
 537
 538         DRM_LOCK();
 539         drm_lastclose(dev);
 540         DRM_UNLOCK();
 541
 542         /* Clean up PCI resources allocated by drm_bufs.c.  We're not really
 543          * worried about resource consumption while the DRM is inactive (between
 544          * lastclose and firstopen or unload) because these aren't actually
 545          * taking up KVA, just keeping the PCI resource allocated.
 546          */
 547         for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
 548                 if (dev->pcir[i] == NULL)
 549                         continue;
 550                 bus_release_resource(dev->device, SYS_RES_MEMORY,
 551                     dev->pcirid[i], dev->pcir[i]);
 552                 dev->pcir[i] = NULL;
 553         }
 554
 555         if (dev->agp) {
 556                 free(dev->agp, DRM_MEM_AGPLISTS);
 557                 dev->agp = NULL;
 558         }
 559
 560         if (dev->driver->unload != NULL) {
 561                 DRM_LOCK();
 562                 dev->driver->unload(dev);
 563                 DRM_UNLOCK();
 564         }
 565
 566         delete_unrhdr(dev->drw_unrhdr);
 567
 568         drm_mem_uninit();
 569
 570         if (pci_disable_busmaster(dev->device))
 571                 DRM_ERROR("Request to disable bus-master failed.\n");
 572
 573         mtx_destroy(&dev->drw_lock);
 574         mtx_destroy(&dev->vbl_lock);
 575         mtx_destroy(&dev->irq_lock);
 576         mtx_destroy(&dev->dev_lock);
 577 }
 578
 579 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 580 {
 581         struct drm_version *version = data;
 582         int len;
 583
 584 #define DRM_COPY( name, value )                                         \
 585         len = strlen( value );                                          \
 586         if ( len > name##_len ) len = name##_len;                       \
 587         name##_len = strlen( value );                                   \
 588         if ( len && name ) {                                            \
 589                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 590                         return EFAULT;                          \
 591         }
 592
 593         version->version_major          = dev->driver->major;
 594         version->version_minor          = dev->driver->minor;
 595         version->version_patchlevel     = dev->driver->patchlevel;
 596
 597         DRM_COPY(version->name, dev->driver->name);
 598         DRM_COPY(version->date, dev->driver->date);
 599         DRM_COPY(version->desc, dev->driver->desc);
 600
 601         return 0;
 602 }
 603
 604 int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
 605 {
 606         struct drm_device *dev = NULL;
 607         int retcode = 0;
 608
 609         dev = DRIVER_SOFTC(dev2unit(kdev));
 610
 611         DRM_DEBUG("open_count = %d\n", dev->open_count);
 612
 613         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
 614
 615         if (!retcode) {
 616                 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
 617                 DRM_LOCK();
 618                 device_busy(dev->device);
 619                 if (!dev->open_count++)
 620                         retcode = drm_firstopen(dev);
 621                 DRM_UNLOCK();
 622         }
 623
 624         return retcode;
 625 }
 626
 627 void drm_close(void *data)
 628 {
 629         struct drm_file *file_priv = data;
 630         struct drm_device *dev = file_priv->dev;
 631         int retcode = 0;
 632
 633         DRM_DEBUG("open_count = %d\n", dev->open_count);
 634
 635         DRM_LOCK();
 636
 637         if (dev->driver->preclose != NULL)
 638                 dev->driver->preclose(dev, file_priv);
 639
 640         /* ========================================================
 641          * Begin inline drm_release
 642          */
 643
 644         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 645             DRM_CURRENTPID, (long)dev->device, dev->open_count);
 646
 647         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 648             && dev->lock.file_priv == file_priv) {
 649                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 650                           DRM_CURRENTPID,
 651                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 652                 if (dev->driver->reclaim_buffers_locked != NULL)
 653                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 654
 655                 drm_lock_free(&dev->lock,
 656                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 657
 658                                 /* FIXME: may require heavy-handed reset of
 659                                    hardware at this point, possibly
 660                                    processed via a callback to the X
 661                                    server. */
 662         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 663             dev->lock.hw_lock != NULL) {
 664                 /* The lock is required to reclaim buffers */
 665                 for (;;) {
 666                         if (!dev->lock.hw_lock) {
 667                                 /* Device has been unregistered */
 668                                 retcode = EINTR;
 669                                 break;
 670                         }
 671                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 672                                 dev->lock.file_priv = file_priv;
 673                                 dev->lock.lock_time = jiffies;
 674                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 675                                 break;  /* Got lock */
 676                         }
 677                         /* Contention */
 678                         retcode = mtx_sleep((void *)&dev->lock.lock_queue,
 679                             &dev->dev_lock, PCATCH, "drmlk2", 0);
 680                         if (retcode)
 681                                 break;
 682                 }
 683                 if (retcode == 0) {
 684                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 685                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
 686                 }
 687         }
 688
 689         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
 690             !dev->driver->reclaim_buffers_locked)
 691                 drm_reclaim_buffers(dev, file_priv);
 692
 693         funsetown(&dev->buf_sigio);
 694
 695         if (dev->driver->postclose != NULL)
 696                 dev->driver->postclose(dev, file_priv);
 697         TAILQ_REMOVE(&dev->files, file_priv, link);
 698         free(file_priv, DRM_MEM_FILES);
 699
 700         /* ========================================================
 701          * End inline drm_release
 702          */
 703
 704         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
 705         device_unbusy(dev->device);
 706         if (--dev->open_count == 0) {
 707                 retcode = drm_lastclose(dev);
 708         }
 709
 710         DRM_UNLOCK();
 711 }
 712
 713 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 714  */
 715 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
 716     DRM_STRUCTPROC *p)
 717 {
 718         struct drm_device *dev = drm_get_device_from_kdev(kdev);
 719         int retcode = 0;
 720         drm_ioctl_desc_t *ioctl;
 721         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 722         int nr = DRM_IOCTL_NR(cmd);
 723         int is_driver_ioctl = 0;
 724         struct drm_file *file_priv;
 725
 726         retcode = devfs_get_cdevpriv((void **)&file_priv);
 727         if (retcode != 0) {
 728                 DRM_ERROR("can't find authenticator\n");
 729                 return EINVAL;
 730         }
 731
 732         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 733         ++file_priv->ioctl_count;
 734
 735         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 736             DRM_CURRENTPID, cmd, nr, (long)dev->device,
 737             file_priv->authenticated);
 738
 739         switch (cmd) {
 740         case FIONBIO:
 741         case FIOASYNC:
 742                 return 0;
 743
 744         case FIOSETOWN:
 745                 return fsetown(*(int *)data, &dev->buf_sigio);
 746
 747         case FIOGETOWN:
 748                 *(int *) data = fgetown(&dev->buf_sigio);
 749                 return 0;
 750         }
 751
 752         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 753                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 754                 return EINVAL;
 755         }
 756
 757         ioctl = &drm_ioctls[nr];
 758         /* It's not a core DRM ioctl, try driver-specific. */
 759         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 760                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 761                 nr -= DRM_COMMAND_BASE;
 762                 if (nr > dev->driver->max_ioctl) {
 763                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
 764                             nr, dev->driver->max_ioctl);
 765                         return EINVAL;
 766                 }
 767                 ioctl = &dev->driver->ioctls[nr];
 768                 is_driver_ioctl = 1;
 769         }
 770         func = ioctl->func;
 771
 772         if (func == NULL) {
 773                 DRM_DEBUG("no function\n");
 774                 return EINVAL;
 775         }
 776
 777         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 778             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 779             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 780                 return EACCES;
 781
 782         if (is_driver_ioctl) {
 783                 DRM_LOCK();
 784                 /* shared code returns -errno */
 785                 retcode = -func(dev, data, file_priv);
 786                 DRM_UNLOCK();
 787         } else {
 788                 retcode = func(dev, data, file_priv);
 789         }
 790
 791         if (retcode != 0)
 792                 DRM_DEBUG("    returning %d\n", retcode);
 793
 794         return retcode;
 795 }
 796
 797 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 798 {
 799         drm_local_map_t *map;
 800
 801         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 802         TAILQ_FOREACH(map, &dev->maplist, link) {
 803                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
 804                         return map;
 805         }
 806
 807         return NULL;
 808 }
 809
 810 #if DRM_LINUX
 811
 812 #include <sys/sysproto.h>
 813
 814 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
 815
 816 #define LINUX_IOCTL_DRM_MIN             0x6400
 817 #define LINUX_IOCTL_DRM_MAX             0x64ff
 818
 819 static linux_ioctl_function_t drm_linux_ioctl;
 820 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
 821     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
 822
 823 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
 824     linux_ioctl_register_handler, &drm_handler);
 825 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
 826     linux_ioctl_unregister_handler, &drm_handler);
 827
 828 /* The bits for in/out are switched on Linux */
 829 #define LINUX_IOC_IN    IOC_OUT
 830 #define LINUX_IOC_OUT   IOC_IN
 831
 832 static int
 833 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
 834 {
 835         int error;
 836         int cmd = args->cmd;
 837
 838         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
 839         if (cmd & LINUX_IOC_IN)
 840                 args->cmd |= IOC_IN;
 841         if (cmd & LINUX_IOC_OUT)
 842                 args->cmd |= IOC_OUT;
 843
 844         error = ioctl(p, (struct ioctl_args *)args);
 845
 846         return error;
 847 }
 848 #endif /* DRM_LINUX */