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