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         device_t realdev;
 161
 162         if (!strcmp(device_get_name(kdev), "drmsub"))
 163                 realdev = device_get_parent(kdev);
 164         else
 165                 realdev = kdev;
 166         vendor = pci_get_vendor(realdev);
 167         device = pci_get_device(realdev);
 168
 169 #if 0 /* XXX */
 170         if (pci_get_class(kdev) != PCIC_DISPLAY
 171             || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
 172                 return ENXIO;
 173 #endif
 174
 175         id_entry = drm_find_description(vendor, device, idlist);
 176         if (id_entry != NULL) {
 177                 if (!device_get_desc(kdev)) {
 178                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
 179                         device_set_desc(kdev, id_entry->name);
 180                 }
 181                 return 0;
 182         }
 183
 184         return ENXIO;
 185 }
 186
 187 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
 188 {
 189         struct drm_device *dev;
 190         drm_pci_id_list_t *id_entry;
 191         int unit;
 192 #if 0
 193         int msicount;
 194 #endif
 195
 196         unit = device_get_unit(kdev);
 197         dev = device_get_softc(kdev);
 198
 199         if (!strcmp(device_get_name(kdev), "drmsub"))
 200                 dev->device = device_get_parent(kdev);
 201         else
 202                 dev->device = kdev;
 203
 204         dev_ops_add(&drm_cdevsw, -1, unit);
 205         dev->devnode = make_dev(&drm_cdevsw,
 206                         unit,
 207                         DRM_DEV_UID,
 208                         DRM_DEV_GID,
 209                         DRM_DEV_MODE,
 210                         "dri/card%d", unit);
 211
 212         dev->pci_domain = 0;
 213         dev->pci_bus = pci_get_bus(dev->device);
 214         dev->pci_slot = pci_get_slot(dev->device);
 215         dev->pci_func = pci_get_function(dev->device);
 216
 217         dev->pci_vendor = pci_get_vendor(dev->device);
 218         dev->pci_device = pci_get_device(dev->device);
 219
 220         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
 221                 if (drm_msi &&
 222                     !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
 223 #if 0
 224                         msicount = pci_msi_count(dev->device);
 225                         DRM_DEBUG("MSI count = %d\n", msicount);
 226                         if (msicount > 1)
 227                                 msicount = 1;
 228
 229                         if (pci_alloc_msi(dev->device, &msicount) == 0) {
 230                                 DRM_INFO("MSI enabled %d message(s)\n",
 231                                     msicount);
 232                                 dev->msi_enabled = 1;
 233                                 dev->irqrid = 1;
 234                         }
 235 #endif
 236                 }
 237
 238                 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
 239                     &dev->irqrid, RF_SHAREABLE);
 240                 if (!dev->irqr) {
 241                         return ENOENT;
 242                 }
 243
 244                 dev->irq = (int) rman_get_start(dev->irqr);
 245         }
 246
 247         DRM_SPININIT(&dev->dev_lock, "drmdev");
 248         lwkt_serialize_init(&dev->irq_lock);
 249         DRM_SPININIT(&dev->vbl_lock, "drmvbl");
 250         DRM_SPININIT(&dev->drw_lock, "drmdrw");
 251
 252         id_entry = drm_find_description(dev->pci_vendor,
 253             dev->pci_device, idlist);
 254         dev->id_entry = id_entry;
 255
 256         return drm_load(dev);
 257 }
 258
 259 int drm_detach(device_t kdev)
 260 {
 261         struct drm_device *dev;
 262
 263         dev = device_get_softc(kdev);
 264
 265         drm_unload(dev);
 266
 267         bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr);
 268
 269 #if 0
 270         if (dev->msi_enabled) {
 271                 pci_release_msi(dev->device);
 272                 DRM_INFO("MSI released\n");
 273         }
 274 #endif
 275
 276         return 0;
 277 }
 278
 279 #ifndef DRM_DEV_NAME
 280 #define DRM_DEV_NAME "drm"
 281 #endif
 282
 283 devclass_t drm_devclass;
 284
 285 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 286     drm_pci_id_list_t *idlist)
 287 {
 288         int i = 0;
 289
 290         for (i = 0; idlist[i].vendor != 0; i++) {
 291                 if ((idlist[i].vendor == vendor) &&
 292                     ((idlist[i].device == device) ||
 293                     (idlist[i].device == 0))) {
 294                         return &idlist[i];
 295                 }
 296         }
 297         return NULL;
 298 }
 299
 300 static int drm_firstopen(struct drm_device *dev)
 301 {
 302         drm_local_map_t *map;
 303         int i;
 304
 305         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 306
 307         /* prebuild the SAREA */
 308         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
 309             _DRM_CONTAINS_LOCK, &map);
 310         if (i != 0)
 311                 return i;
 312
 313         if (dev->driver->firstopen)
 314                 dev->driver->firstopen(dev);
 315
 316         dev->buf_use = 0;
 317
 318         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
 319                 i = drm_dma_setup(dev);
 320                 if (i != 0)
 321                         return i;
 322         }
 323
 324         for (i = 0; i < DRM_HASH_SIZE; i++) {
 325                 dev->magiclist[i].head = NULL;
 326                 dev->magiclist[i].tail = NULL;
 327         }
 328
 329         dev->lock.lock_queue = 0;
 330         dev->irq_enabled = 0;
 331         dev->context_flag = 0;
 332         dev->last_context = 0;
 333         dev->if_version = 0;
 334
 335         dev->buf_sigio = NULL;
 336
 337         DRM_DEBUG("\n");
 338
 339         return 0;
 340 }
 341
 342 static int drm_lastclose(struct drm_device *dev)
 343 {
 344         drm_magic_entry_t *pt, *next;
 345         drm_local_map_t *map, *mapsave;
 346         int i;
 347
 348         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 349
 350         DRM_DEBUG("\n");
 351
 352         if (dev->driver->lastclose != NULL)
 353                 dev->driver->lastclose(dev);
 354
 355         if (dev->irq_enabled)
 356                 drm_irq_uninstall(dev);
 357
 358         if (dev->unique) {
 359                 free(dev->unique, DRM_MEM_DRIVER);
 360                 dev->unique = NULL;
 361                 dev->unique_len = 0;
 362         }
 363         /* Clear pid list */
 364         for (i = 0; i < DRM_HASH_SIZE; i++) {
 365                 for (pt = dev->magiclist[i].head; pt; pt = next) {
 366                         next = pt->next;
 367                         free(pt, DRM_MEM_MAGIC);
 368                 }
 369                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 370         }
 371
 372         DRM_UNLOCK();
 373         drm_drawable_free_all(dev);
 374         DRM_LOCK();
 375
 376         /* Clear AGP information */
 377         if (dev->agp) {
 378                 drm_agp_mem_t *entry;
 379                 drm_agp_mem_t *nexte;
 380
 381                 /* Remove AGP resources, but leave dev->agp intact until
 382                  * drm_unload is called.
 383                  */
 384                 for (entry = dev->agp->memory; entry; entry = nexte) {
 385                         nexte = entry->next;
 386                         if (entry->bound)
 387                                 drm_agp_unbind_memory(entry->handle);
 388                         drm_agp_free_memory(entry->handle);
 389                         free(entry, DRM_MEM_AGPLISTS);
 390                 }
 391                 dev->agp->memory = NULL;
 392
 393                 if (dev->agp->acquired)
 394                         drm_agp_release(dev);
 395
 396                 dev->agp->acquired = 0;
 397                 dev->agp->enabled  = 0;
 398         }
 399         if (dev->sg != NULL) {
 400                 drm_sg_cleanup(dev->sg);
 401                 dev->sg = NULL;
 402         }
 403
 404         TAILQ_FOREACH_MUTABLE(map, &dev->maplist, link, mapsave) {
 405                 if (!(map->flags & _DRM_DRIVER))
 406                         drm_rmmap(dev, map);
 407         }
 408
 409         drm_dma_takedown(dev);
 410         if (dev->lock.hw_lock) {
 411                 dev->lock.hw_lock = NULL; /* SHM removed */
 412                 dev->lock.file_priv = NULL;
 413                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 414         }
 415
 416         return 0;
 417 }
 418
 419 static int drm_load(struct drm_device *dev)
 420 {
 421         int i, retcode;
 422
 423         DRM_DEBUG("\n");
 424
 425         TAILQ_INIT(&dev->maplist);
 426
 427         drm_mem_init();
 428         drm_sysctl_init(dev);
 429         TAILQ_INIT(&dev->files);
 430
 431         dev->counters  = 6;
 432         dev->types[0]  = _DRM_STAT_LOCK;
 433         dev->types[1]  = _DRM_STAT_OPENS;
 434         dev->types[2]  = _DRM_STAT_CLOSES;
 435         dev->types[3]  = _DRM_STAT_IOCTLS;
 436         dev->types[4]  = _DRM_STAT_LOCKS;
 437         dev->types[5]  = _DRM_STAT_UNLOCKS;
 438
 439         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 440                 atomic_set(&dev->counts[i], 0);
 441
 442         if (dev->driver->load != NULL) {
 443                 DRM_LOCK();
 444                 /* Shared code returns -errno. */
 445                 retcode = -dev->driver->load(dev,
 446                     dev->id_entry->driver_private);
 447                 pci_enable_busmaster(dev->device);
 448                 DRM_UNLOCK();
 449                 if (retcode != 0)
 450                         goto error;
 451         }
 452
 453         if (drm_core_has_AGP(dev)) {
 454                 if (drm_device_is_agp(dev))
 455                         dev->agp = drm_agp_init();
 456                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 457                     dev->agp == NULL) {
 458                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 459                             "AGP.\n");
 460                         retcode = ENOMEM;
 461                         goto error;
 462                 }
 463                 if (dev->agp != NULL) {
 464                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
 465                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
 466                                 dev->agp->mtrr = 1;
 467                 }
 468         }
 469
 470         retcode = drm_ctxbitmap_init(dev);
 471         if (retcode != 0) {
 472                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 473                 goto error;
 474         }
 475
 476         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 477             dev->driver->name,
 478             dev->driver->major,
 479             dev->driver->minor,
 480             dev->driver->patchlevel,
 481             dev->driver->date);
 482
 483         return 0;
 484
 485 error:
 486         drm_sysctl_cleanup(dev);
 487         DRM_LOCK();
 488         drm_lastclose(dev);
 489         DRM_UNLOCK();
 490         destroy_dev(dev->devnode);
 491
 492         DRM_SPINUNINIT(&dev->drw_lock);
 493         DRM_SPINUNINIT(&dev->vbl_lock);
 494         DRM_SPINUNINIT(&dev->dev_lock);
 495
 496         return retcode;
 497 }
 498
 499 static void drm_unload(struct drm_device *dev)
 500 {
 501         int i;
 502
 503         DRM_DEBUG("\n");
 504
 505         drm_sysctl_cleanup(dev);
 506         destroy_dev(dev->devnode);
 507
 508         drm_ctxbitmap_cleanup(dev);
 509
 510         if (dev->agp && dev->agp->mtrr) {
 511                 int __unused retcode;
 512
 513                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
 514                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
 515                 DRM_DEBUG("mtrr_del = %d", retcode);
 516         }
 517
 518         drm_vblank_cleanup(dev);
 519
 520         DRM_LOCK();
 521         drm_lastclose(dev);
 522         DRM_UNLOCK();
 523
 524         /* Clean up PCI resources allocated by drm_bufs.c.  We're not really
 525          * worried about resource consumption while the DRM is inactive (between
 526          * lastclose and firstopen or unload) because these aren't actually
 527          * taking up KVA, just keeping the PCI resource allocated.
 528          */
 529         for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
 530                 if (dev->pcir[i] == NULL)
 531                         continue;
 532                 bus_release_resource(dev->device, SYS_RES_MEMORY,
 533                     dev->pcirid[i], dev->pcir[i]);
 534                 dev->pcir[i] = NULL;
 535         }
 536
 537         if (dev->agp) {
 538                 free(dev->agp, DRM_MEM_AGPLISTS);
 539                 dev->agp = NULL;
 540         }
 541
 542         if (dev->driver->unload != NULL) {
 543                 DRM_LOCK();
 544                 dev->driver->unload(dev);
 545                 DRM_UNLOCK();
 546         }
 547
 548         drm_mem_uninit();
 549
 550         pci_disable_busmaster(dev->device);
 551
 552         DRM_SPINUNINIT(&dev->drw_lock);
 553         DRM_SPINUNINIT(&dev->vbl_lock);
 554         DRM_SPINUNINIT(&dev->dev_lock);
 555 }
 556
 557 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 558 {
 559         struct drm_version *version = data;
 560         int len;
 561
 562 #define DRM_COPY( name, value )                                         \
 563         len = strlen( value );                                          \
 564         if ( len > name##_len ) len = name##_len;                       \
 565         name##_len = strlen( value );                                   \
 566         if ( len && name ) {                                            \
 567                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 568                         return EFAULT;                          \
 569         }
 570
 571         version->version_major          = dev->driver->major;
 572         version->version_minor          = dev->driver->minor;
 573         version->version_patchlevel     = dev->driver->patchlevel;
 574
 575         DRM_COPY(version->name, dev->driver->name);
 576         DRM_COPY(version->date, dev->driver->date);
 577         DRM_COPY(version->desc, dev->driver->desc);
 578
 579         return 0;
 580 }
 581
 582 int drm_open(struct dev_open_args *ap)
 583 {
 584         struct cdev *kdev = ap->a_head.a_dev;
 585         int flags = ap->a_oflags;
 586         int fmt = 0;
 587         struct thread *p = curthread;
 588         struct drm_device *dev = NULL;
 589         int retcode = 0;
 590
 591         dev = DRIVER_SOFTC(minor(kdev));
 592
 593         DRM_DEBUG("open_count = %d\n", dev->open_count);
 594
 595         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
 596
 597         if (!retcode) {
 598                 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
 599                 DRM_LOCK();
 600                 device_busy(dev->device);
 601                 if (!dev->open_count++)
 602                         retcode = drm_firstopen(dev);
 603                 DRM_UNLOCK();
 604         }
 605
 606         return retcode;
 607 }
 608
 609 int drm_close(struct dev_close_args *ap)
 610 {
 611         struct cdev *kdev = ap->a_head.a_dev;
 612         struct drm_file *file_priv;
 613         struct drm_device *dev;
 614         int retcode = 0;
 615
 616         dev = DRIVER_SOFTC(minor(kdev));
 617         file_priv = drm_find_file_by_proc(dev, curthread);
 618
 619         DRM_DEBUG("open_count = %d\n", dev->open_count);
 620
 621         DRM_LOCK();
 622
 623         if (--file_priv->refs != 0)
 624                 goto done;
 625
 626         if (dev->driver->preclose != NULL)
 627                 dev->driver->preclose(dev, file_priv);
 628
 629         /* ========================================================
 630          * Begin inline drm_release
 631          */
 632
 633         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 634             DRM_CURRENTPID, (long)dev->device, dev->open_count);
 635
 636         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 637             && dev->lock.file_priv == file_priv) {
 638                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 639                           DRM_CURRENTPID,
 640                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 641                 if (dev->driver->reclaim_buffers_locked != NULL)
 642                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 643
 644                 drm_lock_free(&dev->lock,
 645                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 646
 647                                 /* FIXME: may require heavy-handed reset of
 648                                    hardware at this point, possibly
 649                                    processed via a callback to the X
 650                                    server. */
 651         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 652             dev->lock.hw_lock != NULL) {
 653                 /* The lock is required to reclaim buffers */
 654                 for (;;) {
 655                         if (!dev->lock.hw_lock) {
 656                                 /* Device has been unregistered */
 657                                 retcode = EINTR;
 658                                 break;
 659                         }
 660                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 661                                 dev->lock.file_priv = file_priv;
 662                                 dev->lock.lock_time = jiffies;
 663                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 664                                 break;  /* Got lock */
 665                         }
 666                         /* Contention */
 667                         crit_enter();
 668                         tsleep_interlock((void *)&dev->lock.lock_queue);
 669                         DRM_UNLOCK();
 670                         retcode = tsleep((void *)&dev->lock.lock_queue,
 671                             PCATCH, "drmlk2", 0);
 672                         crit_exit();
 673                         DRM_LOCK();
 674                         if (retcode)
 675                                 break;
 676                 }
 677                 if (retcode == 0) {
 678                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 679                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
 680                 }
 681         }
 682
 683         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
 684             !dev->driver->reclaim_buffers_locked)
 685                 drm_reclaim_buffers(dev, file_priv);
 686
 687         funsetown(dev->buf_sigio);
 688
 689         if (dev->driver->postclose != NULL)
 690                 dev->driver->postclose(dev, file_priv);
 691         TAILQ_REMOVE(&dev->files, file_priv, link);
 692         free(file_priv, DRM_MEM_FILES);
 693
 694         /* ========================================================
 695          * End inline drm_release
 696          */
 697 done:
 698         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
 699         device_unbusy(dev->device);
 700         if (--dev->open_count == 0) {
 701                 retcode = drm_lastclose(dev);
 702         }
 703
 704         DRM_UNLOCK();
 705
 706         return (0);
 707 }
 708
 709 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 710  */
 711 int drm_ioctl(struct dev_ioctl_args *ap)
 712 {
 713         struct cdev *kdev = ap->a_head.a_dev;
 714         u_long cmd = ap->a_cmd;
 715         caddr_t data = ap->a_data;
 716         struct thread *p = curthread;
 717         struct drm_device *dev = drm_get_device_from_kdev(kdev);
 718         int retcode = 0;
 719         drm_ioctl_desc_t *ioctl;
 720         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 721         int nr = DRM_IOCTL_NR(cmd);
 722         int is_driver_ioctl = 0;
 723         struct drm_file *file_priv;
 724
 725         file_priv = drm_find_file_by_proc(dev, p);
 726         if (!file_priv) {
 727                 DRM_ERROR("can't find authenticator\n");
 728                 return EINVAL;
 729         }
 730
 731         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 732         ++file_priv->ioctl_count;
 733
 734         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 735             DRM_CURRENTPID, cmd, nr, (long)dev->device,
 736             file_priv->authenticated);
 737
 738         switch (cmd) {
 739         case FIONBIO:
 740         case FIOASYNC:
 741                 return 0;
 742
 743         case FIOSETOWN:
 744                 return fsetown(*(int *)data, &dev->buf_sigio);
 745
 746         case FIOGETOWN:
 747                 *(int *) data = fgetown(dev->buf_sigio);
 748                 return 0;
 749         }
 750
 751         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 752                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 753                 return EINVAL;
 754         }
 755
 756         ioctl = &drm_ioctls[nr];
 757         /* It's not a core DRM ioctl, try driver-specific. */
 758         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 759                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 760                 nr -= DRM_COMMAND_BASE;
 761                 if (nr > dev->driver->max_ioctl) {
 762                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
 763                             nr, dev->driver->max_ioctl);
 764                         return EINVAL;
 765                 }
 766                 ioctl = &dev->driver->ioctls[nr];
 767                 is_driver_ioctl = 1;
 768         }
 769         func = ioctl->func;
 770
 771         if (func == NULL) {
 772                 DRM_DEBUG("no function\n");
 773                 return EINVAL;
 774         }
 775
 776         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 777             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 778             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 779                 return EACCES;
 780
 781         if (is_driver_ioctl) {
 782                 DRM_LOCK();
 783                 /* shared code returns -errno */
 784                 retcode = -func(dev, data, file_priv);
 785                 DRM_UNLOCK();
 786         } else {
 787                 retcode = func(dev, data, file_priv);
 788         }
 789
 790         if (retcode != 0)
 791                 DRM_DEBUG("    returning %d\n", retcode);
 792
 793         return retcode;
 794 }
 795
 796 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 797 {
 798         drm_local_map_t *map;
 799
 800         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 801         TAILQ_FOREACH(map, &dev->maplist, link) {
 802                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
 803                         return map;
 804         }
 805
 806         return NULL;
 807 }
 808
 809 #if DRM_LINUX
 810
 811 #include <sys/sysproto.h>
 812
 813 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
 814
 815 #define LINUX_IOCTL_DRM_MIN             0x6400
 816 #define LINUX_IOCTL_DRM_MAX             0x64ff
 817
 818 static linux_ioctl_function_t drm_linux_ioctl;
 819 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
 820     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
 821
 822 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
 823     linux_ioctl_register_handler, &drm_handler);
 824 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
 825     linux_ioctl_unregister_handler, &drm_handler);
 826
 827 /* The bits for in/out are switched on Linux */
 828 #define LINUX_IOC_IN    IOC_OUT
 829 #define LINUX_IOC_OUT   IOC_IN
 830
 831 static int
 832 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
 833 {
 834         int error;
 835         int cmd = args->cmd;
 836
 837         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
 838         if (cmd & LINUX_IOC_IN)
 839                 args->cmd |= IOC_IN;
 840         if (cmd & LINUX_IOC_OUT)
 841                 args->cmd |= IOC_OUT;
 842
 843         error = ioctl(p, (struct ioctl_args *)args);
 844
 845         return error;
 846 }
 847 #endif /* DRM_LINUX */