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