sys/dev/drm/drm_drv.c

   1 /*-
   2  * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
   3  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rickard E. (Rik) Faith <faith@valinux.com>
  27  *    Gareth Hughes <gareth@valinux.com>
  28  *
  29  */
  30
  31 #include <sys/cdefs.h>
  32 __FBSDID("$FreeBSD$");
  33
  34 /** @file drm_drv.c
  35  * The catch-all file for DRM device support, including module setup/teardown,
  36  * open/close, and ioctl dispatch.
  37  */
  38
  39
  40 #include <sys/limits.h>
  41 #include "dev/drm/drmP.h"
  42 #include "dev/drm/drm.h"
  43 #include "dev/drm/drm_sarea.h"
  44
  45 #ifdef DRM_DEBUG_DEFAULT_ON
  46 int drm_debug_flag = 1;
  47 #else
  48 int drm_debug_flag = 0;
  49 #endif
  50
  51 static int drm_load(struct drm_device *dev);
  52 static void drm_unload(struct drm_device *dev);
  53 static drm_pci_id_list_t *drm_find_description(int vendor, int device,
  54     drm_pci_id_list_t *idlist);
  55
  56 #define DRIVER_SOFTC(unit) \
  57         ((struct drm_device *)devclass_get_softc(drm_devclass, unit))
  58
  59 MODULE_VERSION(drm, 1);
  60 MODULE_DEPEND(drm, agp, 1, 1, 1);
  61 MODULE_DEPEND(drm, pci, 1, 1, 1);
  62 MODULE_DEPEND(drm, mem, 1, 1, 1);
  63
  64 static drm_ioctl_desc_t           drm_ioctls[256] = {
  65         DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
  66         DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
  67         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
  68         DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
  69         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
  70         DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
  71         DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
  72         DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
  73
  74         DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  75         DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  76         DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  77         DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  78
  79         DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  80         DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
  81
  82         DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  83         DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
  84
  85         DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
  86         DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  87         DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  88         DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
  89         DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  90         DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  91         DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
  92
  93         DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  94         DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  95
  96         DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
  97         DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
  98
  99         DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
 100
 101         DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 102         DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 103         DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
 104         DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
 105         DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
 106         DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
 107
 108         DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 109
 110         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 111         DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 112         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 113         DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
 114         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 115         DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 116         DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 117         DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 118
 119         DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 120         DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 121         DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
 122         DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
 123         DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 124 };
 125
 126 static struct cdevsw drm_cdevsw = {
 127         .d_version =    D_VERSION,
 128         .d_open =       drm_open,
 129         .d_read =       drm_read,
 130         .d_ioctl =      drm_ioctl,
 131         .d_poll =       drm_poll,
 132         .d_mmap =       drm_mmap,
 133         .d_name =       "drm",
 134         .d_flags =      D_TRACKCLOSE
 135 };
 136
 137 int drm_msi = 1;        /* Enable by default. */
 138 TUNABLE_INT("hw.drm.msi", &drm_msi);
 139
 140 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
 141         {0x8086, 0x2772}, /* Intel i945G        */ \
 142         {0x8086, 0x27A2}, /* Intel i945GM       */ \
 143         {0x8086, 0x27AE}, /* Intel i945GME      */ \
 144         {0, 0}
 145 };
 146
 147 static int drm_msi_is_blacklisted(int vendor, int device)
 148 {
 149         int i = 0;
 150
 151         for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
 152                 if ((drm_msi_blacklist[i].vendor == vendor) &&
 153                     (drm_msi_blacklist[i].device == device)) {
 154                         return 1;
 155                 }
 156         }
 157
 158         return 0;
 159 }
 160
 161 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
 162 {
 163         drm_pci_id_list_t *id_entry;
 164         int vendor, device;
 165 #if __FreeBSD_version < 700010
 166         device_t realdev;
 167
 168         if (!strcmp(device_get_name(kdev), "drmsub"))
 169                 realdev = device_get_parent(kdev);
 170         else
 171                 realdev = kdev;
 172         vendor = pci_get_vendor(realdev);
 173         device = pci_get_device(realdev);
 174 #else
 175         vendor = pci_get_vendor(kdev);
 176         device = pci_get_device(kdev);
 177 #endif
 178
 179         if (pci_get_class(kdev) != PCIC_DISPLAY
 180             || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
 181                 return ENXIO;
 182
 183         id_entry = drm_find_description(vendor, device, idlist);
 184         if (id_entry != NULL) {
 185                 if (!device_get_desc(kdev)) {
 186                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
 187                         device_set_desc(kdev, id_entry->name);
 188                 }
 189                 return 0;
 190         }
 191
 192         return ENXIO;
 193 }
 194
 195 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
 196 {
 197         struct drm_device *dev;
 198         drm_pci_id_list_t *id_entry;
 199         int unit, msicount;
 200
 201         unit = device_get_unit(kdev);
 202         dev = device_get_softc(kdev);
 203
 204 #if __FreeBSD_version < 700010
 205         if (!strcmp(device_get_name(kdev), "drmsub"))
 206                 dev->device = device_get_parent(kdev);
 207         else
 208                 dev->device = kdev;
 209 #else
 210         dev->device = kdev;
 211 #endif
 212         dev->devnode = make_dev(&drm_cdevsw,
 213                         unit,
 214                         DRM_DEV_UID,
 215                         DRM_DEV_GID,
 216                         DRM_DEV_MODE,
 217                         "dri/card%d", unit);
 218
 219 #if __FreeBSD_version >= 700053
 220         dev->pci_domain = pci_get_domain(dev->device);
 221 #else
 222         dev->pci_domain = 0;
 223 #endif
 224         dev->pci_bus = pci_get_bus(dev->device);
 225         dev->pci_slot = pci_get_slot(dev->device);
 226         dev->pci_func = pci_get_function(dev->device);
 227
 228         dev->pci_vendor = pci_get_vendor(dev->device);
 229         dev->pci_device = pci_get_device(dev->device);
 230
 231         if (drm_msi &&
 232             !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
 233                 msicount = pci_msi_count(dev->device);
 234                 DRM_DEBUG("MSI count = %d\n", msicount);
 235                 if (msicount > 1)
 236                         msicount = 1;
 237
 238                 if (pci_alloc_msi(dev->device, &msicount) == 0) {
 239                         DRM_INFO("MSI enabled %d message(s)\n", msicount);
 240                         dev->msi_enabled = 1;
 241                         dev->irqrid = 1;
 242                 }
 243         }
 244
 245         dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
 246             &dev->irqrid, RF_SHAREABLE);
 247         if (!dev->irqr) {
 248                 return ENOENT;
 249         }
 250
 251         dev->irq = (int) rman_get_start(dev->irqr);
 252
 253         mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
 254         mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
 255         mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
 256         mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
 257
 258         id_entry = drm_find_description(dev->pci_vendor,
 259             dev->pci_device, idlist);
 260         dev->id_entry = id_entry;
 261
 262         return drm_load(dev);
 263 }
 264
 265 int drm_detach(device_t kdev)
 266 {
 267         struct drm_device *dev;
 268
 269         dev = device_get_softc(kdev);
 270
 271         drm_unload(dev);
 272
 273         bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr);
 274
 275         if (dev->msi_enabled) {
 276                 pci_release_msi(dev->device);
 277                 DRM_INFO("MSI released\n");
 278         }
 279
 280         return 0;
 281 }
 282
 283 #ifndef DRM_DEV_NAME
 284 #define DRM_DEV_NAME "drm"
 285 #endif
 286
 287 devclass_t drm_devclass;
 288
 289 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 290     drm_pci_id_list_t *idlist)
 291 {
 292         int i = 0;
 293
 294         for (i = 0; idlist[i].vendor != 0; i++) {
 295                 if ((idlist[i].vendor == vendor) &&
 296                     ((idlist[i].device == device) ||
 297                     (idlist[i].device == 0))) {
 298                         return &idlist[i];
 299                 }
 300         }
 301         return NULL;
 302 }
 303
 304 static int drm_firstopen(struct drm_device *dev)
 305 {
 306         drm_local_map_t *map;
 307         int i;
 308
 309         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 310
 311         /* prebuild the SAREA */
 312         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
 313             _DRM_CONTAINS_LOCK, &map);
 314         if (i != 0)
 315                 return i;
 316
 317         if (dev->driver->firstopen)
 318                 dev->driver->firstopen(dev);
 319
 320         dev->buf_use = 0;
 321
 322         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
 323                 i = drm_dma_setup(dev);
 324                 if (i != 0)
 325                         return i;
 326         }
 327
 328         for (i = 0; i < DRM_HASH_SIZE; i++) {
 329                 dev->magiclist[i].head = NULL;
 330                 dev->magiclist[i].tail = NULL;
 331         }
 332
 333         dev->lock.lock_queue = 0;
 334         dev->irq_enabled = 0;
 335         dev->context_flag = 0;
 336         dev->last_context = 0;
 337         dev->if_version = 0;
 338
 339         dev->buf_sigio = NULL;
 340
 341         DRM_DEBUG("\n");
 342
 343         return 0;
 344 }
 345
 346 static int drm_lastclose(struct drm_device *dev)
 347 {
 348         drm_magic_entry_t *pt, *next;
 349         drm_local_map_t *map, *mapsave;
 350         int i;
 351
 352         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 353
 354         DRM_DEBUG("\n");
 355
 356         if (dev->driver->lastclose != NULL)
 357                 dev->driver->lastclose(dev);
 358
 359         if (dev->irq_enabled)
 360                 drm_irq_uninstall(dev);
 361
 362         if (dev->unique) {
 363                 free(dev->unique, DRM_MEM_DRIVER);
 364                 dev->unique = NULL;
 365                 dev->unique_len = 0;
 366         }
 367         /* Clear pid list */
 368         for (i = 0; i < DRM_HASH_SIZE; i++) {
 369                 for (pt = dev->magiclist[i].head; pt; pt = next) {
 370                         next = pt->next;
 371                         free(pt, DRM_MEM_MAGIC);
 372                 }
 373                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 374         }
 375
 376         DRM_UNLOCK();
 377         drm_drawable_free_all(dev);
 378         DRM_LOCK();
 379
 380         /* Clear AGP information */
 381         if (dev->agp) {
 382                 drm_agp_mem_t *entry;
 383                 drm_agp_mem_t *nexte;
 384
 385                 /* Remove AGP resources, but leave dev->agp intact until
 386                  * drm_unload is called.
 387                  */
 388                 for (entry = dev->agp->memory; entry; entry = nexte) {
 389                         nexte = entry->next;
 390                         if (entry->bound)
 391                                 drm_agp_unbind_memory(entry->handle);
 392                         drm_agp_free_memory(entry->handle);
 393                         free(entry, DRM_MEM_AGPLISTS);
 394                 }
 395                 dev->agp->memory = NULL;
 396
 397                 if (dev->agp->acquired)
 398                         drm_agp_release(dev);
 399
 400                 dev->agp->acquired = 0;
 401                 dev->agp->enabled  = 0;
 402         }
 403         if (dev->sg != NULL) {
 404                 drm_sg_cleanup(dev->sg);
 405                 dev->sg = NULL;
 406         }
 407
 408         TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
 409                 if (!(map->flags & _DRM_DRIVER))
 410                         drm_rmmap(dev, map);
 411         }
 412
 413         drm_dma_takedown(dev);
 414         if (dev->lock.hw_lock) {
 415                 dev->lock.hw_lock = NULL; /* SHM removed */
 416                 dev->lock.file_priv = NULL;
 417                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 418         }
 419
 420         return 0;
 421 }
 422
 423 static int drm_load(struct drm_device *dev)
 424 {
 425         int i, retcode;
 426
 427         DRM_DEBUG("\n");
 428
 429         TAILQ_INIT(&dev->maplist);
 430
 431         drm_mem_init();
 432         drm_sysctl_init(dev);
 433         TAILQ_INIT(&dev->files);
 434
 435         dev->counters  = 6;
 436         dev->types[0]  = _DRM_STAT_LOCK;
 437         dev->types[1]  = _DRM_STAT_OPENS;
 438         dev->types[2]  = _DRM_STAT_CLOSES;
 439         dev->types[3]  = _DRM_STAT_IOCTLS;
 440         dev->types[4]  = _DRM_STAT_LOCKS;
 441         dev->types[5]  = _DRM_STAT_UNLOCKS;
 442
 443         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 444                 atomic_set(&dev->counts[i], 0);
 445
 446         if (dev->driver->load != NULL) {
 447                 DRM_LOCK();
 448                 /* Shared code returns -errno. */
 449                 retcode = -dev->driver->load(dev,
 450                     dev->id_entry->driver_private);
 451                 if (pci_enable_busmaster(dev->device))
 452                         DRM_ERROR("Request to enable bus-master failed.\n");
 453                 DRM_UNLOCK();
 454                 if (retcode != 0)
 455                         goto error;
 456         }
 457
 458         if (drm_core_has_AGP(dev)) {
 459                 if (drm_device_is_agp(dev))
 460                         dev->agp = drm_agp_init();
 461                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 462                     dev->agp == NULL) {
 463                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 464                             "AGP.\n");
 465                         retcode = ENOMEM;
 466                         goto error;
 467                 }
 468                 if (dev->agp != NULL) {
 469                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
 470                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
 471                                 dev->agp->mtrr = 1;
 472                 }
 473         }
 474
 475         retcode = drm_ctxbitmap_init(dev);
 476         if (retcode != 0) {
 477                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 478                 goto error;
 479         }
 480
 481         dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
 482         if (dev->drw_unrhdr == NULL) {
 483                 DRM_ERROR("Couldn't allocate drawable number allocator\n");
 484                 goto error;
 485         }
 486
 487         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 488             dev->driver->name,
 489             dev->driver->major,
 490             dev->driver->minor,
 491             dev->driver->patchlevel,
 492             dev->driver->date);
 493
 494         return 0;
 495
 496 error:
 497         drm_sysctl_cleanup(dev);
 498         DRM_LOCK();
 499         drm_lastclose(dev);
 500         DRM_UNLOCK();
 501         destroy_dev(dev->devnode);
 502
 503         mtx_destroy(&dev->drw_lock);
 504         mtx_destroy(&dev->vbl_lock);
 505         mtx_destroy(&dev->irq_lock);
 506         mtx_destroy(&dev->dev_lock);
 507
 508         return retcode;
 509 }
 510
 511 static void drm_unload(struct drm_device *dev)
 512 {
 513         int i;
 514
 515         DRM_DEBUG("\n");
 516
 517         drm_sysctl_cleanup(dev);
 518         destroy_dev(dev->devnode);
 519
 520         drm_ctxbitmap_cleanup(dev);
 521
 522         if (dev->agp && dev->agp->mtrr) {
 523                 int __unused retcode;
 524
 525                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
 526                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
 527                 DRM_DEBUG("mtrr_del = %d", retcode);
 528         }
 529
 530         drm_vblank_cleanup(dev);
 531
 532         DRM_LOCK();
 533         drm_lastclose(dev);
 534         DRM_UNLOCK();
 535
 536         /* Clean up PCI resources allocated by drm_bufs.c.  We're not really
 537          * worried about resource consumption while the DRM is inactive (between
 538          * lastclose and firstopen or unload) because these aren't actually
 539          * taking up KVA, just keeping the PCI resource allocated.
 540          */
 541         for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
 542                 if (dev->pcir[i] == NULL)
 543                         continue;
 544                 bus_release_resource(dev->device, SYS_RES_MEMORY,
 545                     dev->pcirid[i], dev->pcir[i]);
 546                 dev->pcir[i] = NULL;
 547         }
 548
 549         if (dev->agp) {
 550                 free(dev->agp, DRM_MEM_AGPLISTS);
 551                 dev->agp = NULL;
 552         }
 553
 554         if (dev->driver->unload != NULL) {
 555                 DRM_LOCK();
 556                 dev->driver->unload(dev);
 557                 DRM_UNLOCK();
 558         }
 559
 560         delete_unrhdr(dev->drw_unrhdr);
 561
 562         drm_mem_uninit();
 563
 564         if (pci_disable_busmaster(dev->device))
 565                 DRM_ERROR("Request to disable bus-master failed.\n");
 566
 567         mtx_destroy(&dev->drw_lock);
 568         mtx_destroy(&dev->vbl_lock);
 569         mtx_destroy(&dev->irq_lock);
 570         mtx_destroy(&dev->dev_lock);
 571 }
 572
 573 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 574 {
 575         struct drm_version *version = data;
 576         int len;
 577
 578 #define DRM_COPY( name, value )                                         \
 579         len = strlen( value );                                          \
 580         if ( len > name##_len ) len = name##_len;                       \
 581         name##_len = strlen( value );                                   \
 582         if ( len && name ) {                                            \
 583                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 584                         return EFAULT;                          \
 585         }
 586
 587         version->version_major          = dev->driver->major;
 588         version->version_minor          = dev->driver->minor;
 589         version->version_patchlevel     = dev->driver->patchlevel;
 590
 591         DRM_COPY(version->name, dev->driver->name);
 592         DRM_COPY(version->date, dev->driver->date);
 593         DRM_COPY(version->desc, dev->driver->desc);
 594
 595         return 0;
 596 }
 597
 598 int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
 599 {
 600         struct drm_device *dev = NULL;
 601         int retcode = 0;
 602
 603         dev = DRIVER_SOFTC(dev2unit(kdev));
 604
 605         DRM_DEBUG("open_count = %d\n", dev->open_count);
 606
 607         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
 608
 609         if (!retcode) {
 610                 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
 611                 DRM_LOCK();
 612                 device_busy(dev->device);
 613                 if (!dev->open_count++)
 614                         retcode = drm_firstopen(dev);
 615                 DRM_UNLOCK();
 616         }
 617
 618         return retcode;
 619 }
 620
 621 void drm_close(void *data)
 622 {
 623         struct drm_file *file_priv = data;
 624         struct drm_device *dev = file_priv->dev;
 625         int retcode = 0;
 626
 627         DRM_DEBUG("open_count = %d\n", dev->open_count);
 628
 629         DRM_LOCK();
 630
 631         if (dev->driver->preclose != NULL)
 632                 dev->driver->preclose(dev, file_priv);
 633
 634         /* ========================================================
 635          * Begin inline drm_release
 636          */
 637
 638         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 639             DRM_CURRENTPID, (long)dev->device, dev->open_count);
 640
 641         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 642             && dev->lock.file_priv == file_priv) {
 643                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 644                           DRM_CURRENTPID,
 645                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 646                 if (dev->driver->reclaim_buffers_locked != NULL)
 647                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 648
 649                 drm_lock_free(&dev->lock,
 650                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 651
 652                                 /* FIXME: may require heavy-handed reset of
 653                                    hardware at this point, possibly
 654                                    processed via a callback to the X
 655                                    server. */
 656         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 657             dev->lock.hw_lock != NULL) {
 658                 /* The lock is required to reclaim buffers */
 659                 for (;;) {
 660                         if (!dev->lock.hw_lock) {
 661                                 /* Device has been unregistered */
 662                                 retcode = EINTR;
 663                                 break;
 664                         }
 665                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 666                                 dev->lock.file_priv = file_priv;
 667                                 dev->lock.lock_time = jiffies;
 668                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 669                                 break;  /* Got lock */
 670                         }
 671                         /* Contention */
 672                         retcode = mtx_sleep((void *)&dev->lock.lock_queue,
 673                             &dev->dev_lock, PCATCH, "drmlk2", 0);
 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
 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
 707 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 708  */
 709 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
 710     DRM_STRUCTPROC *p)
 711 {
 712         struct drm_device *dev = drm_get_device_from_kdev(kdev);
 713         int retcode = 0;
 714         drm_ioctl_desc_t *ioctl;
 715         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 716         int nr = DRM_IOCTL_NR(cmd);
 717         int is_driver_ioctl = 0;
 718         struct drm_file *file_priv;
 719
 720         retcode = devfs_get_cdevpriv((void **)&file_priv);
 721         if (retcode != 0) {
 722                 DRM_ERROR("can't find authenticator\n");
 723                 return EINVAL;
 724         }
 725
 726         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 727         ++file_priv->ioctl_count;
 728
 729         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 730             DRM_CURRENTPID, cmd, nr, (long)dev->device,
 731             file_priv->authenticated);
 732
 733         switch (cmd) {
 734         case FIONBIO:
 735         case FIOASYNC:
 736                 return 0;
 737
 738         case FIOSETOWN:
 739                 return fsetown(*(int *)data, &dev->buf_sigio);
 740
 741         case FIOGETOWN:
 742                 *(int *) data = fgetown(&dev->buf_sigio);
 743                 return 0;
 744         }
 745
 746         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 747                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 748                 return EINVAL;
 749         }
 750
 751         ioctl = &drm_ioctls[nr];
 752         /* It's not a core DRM ioctl, try driver-specific. */
 753         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 754                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 755                 nr -= DRM_COMMAND_BASE;
 756                 if (nr > dev->driver->max_ioctl) {
 757                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
 758                             nr, dev->driver->max_ioctl);
 759                         return EINVAL;
 760                 }
 761                 ioctl = &dev->driver->ioctls[nr];
 762                 is_driver_ioctl = 1;
 763         }
 764         func = ioctl->func;
 765
 766         if (func == NULL) {
 767                 DRM_DEBUG("no function\n");
 768                 return EINVAL;
 769         }
 770
 771         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 772             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 773             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 774                 return EACCES;
 775
 776         if (is_driver_ioctl) {
 777                 DRM_LOCK();
 778                 /* shared code returns -errno */
 779                 retcode = -func(dev, data, file_priv);
 780                 DRM_UNLOCK();
 781         } else {
 782                 retcode = func(dev, data, file_priv);
 783         }
 784
 785         if (retcode != 0)
 786                 DRM_DEBUG("    returning %d\n", retcode);
 787
 788         return retcode;
 789 }
 790
 791 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 792 {
 793         drm_local_map_t *map;
 794
 795         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 796         TAILQ_FOREACH(map, &dev->maplist, link) {
 797                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
 798                         return map;
 799         }
 800
 801         return NULL;
 802 }
 803
 804 #if DRM_LINUX
 805
 806 #include <sys/sysproto.h>
 807
 808 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
 809
 810 #define LINUX_IOCTL_DRM_MIN             0x6400
 811 #define LINUX_IOCTL_DRM_MAX             0x64ff
 812
 813 static linux_ioctl_function_t drm_linux_ioctl;
 814 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
 815     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
 816
 817 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
 818     linux_ioctl_register_handler, &drm_handler);
 819 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
 820     linux_ioctl_unregister_handler, &drm_handler);
 821
 822 /* The bits for in/out are switched on Linux */
 823 #define LINUX_IOC_IN    IOC_OUT
 824 #define LINUX_IOC_OUT   IOC_IN
 825
 826 static int
 827 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
 828 {
 829         int error;
 830         int cmd = args->cmd;
 831
 832         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
 833         if (cmd & LINUX_IOC_IN)
 834                 args->cmd |= IOC_IN;
 835         if (cmd & LINUX_IOC_OUT)
 836                 args->cmd |= IOC_OUT;
 837
 838         error = ioctl(p, (struct ioctl_args *)args);
 839
 840         return error;
 841 }
 842 #endif /* DRM_LINUX */