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