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 <[email protected]> 27 * Gareth Hughes <[email protected]> 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 MODULE_VERSION(drm, 1); 57 MODULE_DEPEND(drm, agp, 1, 1, 1); 58 MODULE_DEPEND(drm, pci, 1, 1, 1); 59 MODULE_DEPEND(drm, mem, 1, 1, 1); 60 61 static drm_ioctl_desc_t drm_ioctls[256] = { 62 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), 63 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), 64 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), 65 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), 66 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), 67 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), 68 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), 69 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), 70 71 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 72 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 73 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 74 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 75 76 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 77 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), 78 79 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 80 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), 81 82 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), 83 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 84 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 85 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), 86 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 87 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 88 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), 89 90 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 91 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 92 93 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), 94 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), 95 96 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), 97 98 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 99 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 100 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), 101 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), 102 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), 103 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), 104 105 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 106 107 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 108 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 109 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 110 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), 111 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 112 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 113 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 114 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 115 116 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 117 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 118 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0), 119 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), 120 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 121 }; 122 123 static struct cdevsw drm_cdevsw = { 124 .d_version = D_VERSION, 125 .d_open = drm_open, 126 .d_read = drm_read, 127 .d_ioctl = drm_ioctl, 128 .d_poll = drm_poll, 129 .d_mmap = drm_mmap, 130 .d_name = "drm", 131 .d_flags = D_TRACKCLOSE 132 }; 133 134 static int drm_msi = 1; /* Enable by default. */ 135 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); 136 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1, 137 "Enable MSI interrupts for drm devices"); 138 139 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { 140 {0x8086, 0x2772}, /* Intel i945G */ \ 141 {0x8086, 0x27A2}, /* Intel i945GM */ \ 142 {0x8086, 0x27AE}, /* Intel i945GME */ \ 143 {0, 0} 144 }; 145 146 static int drm_msi_is_blacklisted(int vendor, int device) 147 { 148 int i = 0; 149 150 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { 151 if ((drm_msi_blacklist[i].vendor == vendor) && 152 (drm_msi_blacklist[i].device == device)) { 153 return 1; 154 } 155 } 156 157 return 0; 158 } 159 160 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) 161 { 162 drm_pci_id_list_t *id_entry; 163 int vendor, device; 164 vendor = pci_get_vendor(kdev); 165 device = pci_get_device(kdev); 166 167 if (pci_get_class(kdev) != PCIC_DISPLAY 168 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA) 169 return ENXIO; 170 171 id_entry = drm_find_description(vendor, device, idlist); 172 if (id_entry != NULL) { 173 if (!device_get_desc(kdev)) { 174 DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 175 device_set_desc(kdev, id_entry->name); 176 } 177 DRM_OBSOLETE(kdev); 178 return BUS_PROBE_GENERIC; 179 } 180 181 return ENXIO; 182 } 183 184 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 185 { 186 struct drm_device *dev; 187 drm_pci_id_list_t *id_entry; 188 int unit, msicount; 189 190 unit = device_get_unit(kdev); 191 dev = device_get_softc(kdev); 192 193 dev->device = kdev; 194 dev->devnode = make_dev(&drm_cdevsw, 195 0, 196 DRM_DEV_UID, 197 DRM_DEV_GID, 198 DRM_DEV_MODE, 199 "dri/card%d", unit); 200 dev->devnode->si_drv1 = dev; 201 202 dev->pci_domain = pci_get_domain(dev->device); 203 dev->pci_bus = pci_get_bus(dev->device); 204 dev->pci_slot = pci_get_slot(dev->device); 205 dev->pci_func = pci_get_function(dev->device); 206 207 dev->pci_vendor = pci_get_vendor(dev->device); 208 dev->pci_device = pci_get_device(dev->device); 209 210 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { 211 if (drm_msi && 212 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) { 213 msicount = pci_msi_count(dev->device); 214 DRM_DEBUG("MSI count = %d\n", msicount); 215 if (msicount > 1) 216 msicount = 1; 217 218 if (pci_alloc_msi(dev->device, &msicount) == 0) { 219 DRM_INFO("MSI enabled %d message(s)\n", 220 msicount); 221 dev->msi_enabled = 1; 222 dev->irqrid = 1; 223 } 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 mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF); 236 mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF); 237 mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF); 238 mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF); 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 (dev->msi_enabled) { 260 pci_release_msi(dev->device); 261 DRM_INFO("MSI released\n"); 262 } 263 } 264 265 return 0; 266 } 267 268 #ifndef DRM_DEV_NAME 269 #define DRM_DEV_NAME "drm" 270 #endif 271 272 devclass_t drm_devclass; 273 274 drm_pci_id_list_t *drm_find_description(int vendor, int device, 275 drm_pci_id_list_t *idlist) 276 { 277 int i = 0; 278 279 for (i = 0; idlist[i].vendor != 0; i++) { 280 if ((idlist[i].vendor == vendor) && 281 ((idlist[i].device == device) || 282 (idlist[i].device == 0))) { 283 return &idlist[i]; 284 } 285 } 286 return NULL; 287 } 288 289 static int drm_firstopen(struct drm_device *dev) 290 { 291 drm_local_map_t *map; 292 int i; 293 294 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 295 296 /* prebuild the SAREA */ 297 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, 298 _DRM_CONTAINS_LOCK, &map); 299 if (i != 0) 300 return i; 301 302 if (dev->driver->firstopen) 303 dev->driver->firstopen(dev); 304 305 dev->buf_use = 0; 306 307 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { 308 i = drm_dma_setup(dev); 309 if (i != 0) 310 return i; 311 } 312 313 for (i = 0; i < DRM_HASH_SIZE; i++) { 314 dev->magiclist[i].head = NULL; 315 dev->magiclist[i].tail = NULL; 316 } 317 318 dev->lock.lock_queue = 0; 319 dev->irq_enabled = 0; 320 dev->context_flag = 0; 321 dev->last_context = 0; 322 dev->if_version = 0; 323 324 dev->buf_sigio = NULL; 325 326 DRM_DEBUG("\n"); 327 328 return 0; 329 } 330 331 static int drm_lastclose(struct drm_device *dev) 332 { 333 drm_magic_entry_t *pt, *next; 334 drm_local_map_t *map, *mapsave; 335 int i; 336 337 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 338 339 DRM_DEBUG("\n"); 340 341 if (dev->driver->lastclose != NULL) 342 dev->driver->lastclose(dev); 343 344 if (dev->irq_enabled) 345 drm_irq_uninstall(dev); 346 347 if (dev->unique) { 348 free(dev->unique, DRM_MEM_DRIVER); 349 dev->unique = NULL; 350 dev->unique_len = 0; 351 } 352 /* Clear pid list */ 353 for (i = 0; i < DRM_HASH_SIZE; i++) { 354 for (pt = dev->magiclist[i].head; pt; pt = next) { 355 next = pt->next; 356 free(pt, DRM_MEM_MAGIC); 357 } 358 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 359 } 360 361 DRM_UNLOCK(); 362 drm_drawable_free_all(dev); 363 DRM_LOCK(); 364 365 /* Clear AGP information */ 366 if (dev->agp) { 367 drm_agp_mem_t *entry; 368 drm_agp_mem_t *nexte; 369 370 /* Remove AGP resources, but leave dev->agp intact until 371 * drm_unload is called. 372 */ 373 for (entry = dev->agp->memory; entry; entry = nexte) { 374 nexte = entry->next; 375 if (entry->bound) 376 drm_agp_unbind_memory(entry->handle); 377 drm_agp_free_memory(entry->handle); 378 free(entry, DRM_MEM_AGPLISTS); 379 } 380 dev->agp->memory = NULL; 381 382 if (dev->agp->acquired) 383 drm_agp_release(dev); 384 385 dev->agp->acquired = 0; 386 dev->agp->enabled = 0; 387 } 388 if (dev->sg != NULL) { 389 drm_sg_cleanup(dev->sg); 390 dev->sg = NULL; 391 } 392 393 TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) { 394 if (!(map->flags & _DRM_DRIVER)) 395 drm_rmmap(dev, map); 396 } 397 398 drm_dma_takedown(dev); 399 if (dev->lock.hw_lock) { 400 dev->lock.hw_lock = NULL; /* SHM removed */ 401 dev->lock.file_priv = NULL; 402 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 403 } 404 405 return 0; 406 } 407 408 static int drm_load(struct drm_device *dev) 409 { 410 int i, retcode; 411 412 DRM_DEBUG("\n"); 413 414 TAILQ_INIT(&dev->maplist); 415 dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL); 416 if (dev->map_unrhdr == NULL) { 417 DRM_ERROR("Couldn't allocate map number allocator\n"); 418 return EINVAL; 419 } 420 421 422 drm_mem_init(); 423 drm_sysctl_init(dev); 424 TAILQ_INIT(&dev->files); 425 426 dev->counters = 6; 427 dev->types[0] = _DRM_STAT_LOCK; 428 dev->types[1] = _DRM_STAT_OPENS; 429 dev->types[2] = _DRM_STAT_CLOSES; 430 dev->types[3] = _DRM_STAT_IOCTLS; 431 dev->types[4] = _DRM_STAT_LOCKS; 432 dev->types[5] = _DRM_STAT_UNLOCKS; 433 434 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 435 atomic_set(&dev->counts[i], 0); 436 437 if (dev->driver->load != NULL) { 438 DRM_LOCK(); 439 /* Shared code returns -errno. */ 440 retcode = -dev->driver->load(dev, 441 dev->id_entry->driver_private); 442 if (pci_enable_busmaster(dev->device)) 443 DRM_ERROR("Request to enable bus-master failed.\n"); 444 DRM_UNLOCK(); 445 if (retcode != 0) 446 goto error; 447 } 448 449 if (drm_core_has_AGP(dev)) { 450 if (drm_device_is_agp(dev)) 451 dev->agp = drm_agp_init(); 452 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 453 dev->agp == NULL) { 454 DRM_ERROR("Card isn't AGP, or couldn't initialize " 455 "AGP.\n"); 456 retcode = ENOMEM; 457 goto error; 458 } 459 if (dev->agp != NULL && dev->agp->info.ai_aperture_base != 0) { 460 if (drm_mtrr_add(dev->agp->info.ai_aperture_base, 461 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0) 462 dev->agp->mtrr = 1; 463 } 464 } 465 466 retcode = drm_ctxbitmap_init(dev); 467 if (retcode != 0) { 468 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 469 goto error; 470 } 471 472 dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL); 473 if (dev->drw_unrhdr == NULL) { 474 DRM_ERROR("Couldn't allocate drawable number allocator\n"); 475 goto error; 476 } 477 478 DRM_INFO("Initialized %s %d.%d.%d %s\n", 479 dev->driver->name, 480 dev->driver->major, 481 dev->driver->minor, 482 dev->driver->patchlevel, 483 dev->driver->date); 484 485 return 0; 486 487 error: 488 drm_sysctl_cleanup(dev); 489 DRM_LOCK(); 490 drm_lastclose(dev); 491 DRM_UNLOCK(); 492 destroy_dev(dev->devnode); 493 494 mtx_destroy(&dev->drw_lock); 495 mtx_destroy(&dev->vbl_lock); 496 mtx_destroy(&dev->irq_lock); 497 mtx_destroy(&dev->dev_lock); 498 499 return retcode; 500 } 501 502 static void drm_unload(struct drm_device *dev) 503 { 504 int i; 505 506 DRM_DEBUG("\n"); 507 508 drm_sysctl_cleanup(dev); 509 destroy_dev(dev->devnode); 510 511 drm_ctxbitmap_cleanup(dev); 512 513 if (dev->agp && dev->agp->mtrr) { 514 int __unused retcode; 515 516 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, 517 dev->agp->info.ai_aperture_size, DRM_MTRR_WC); 518 DRM_DEBUG("mtrr_del = %d", retcode); 519 } 520 521 drm_vblank_cleanup(dev); 522 523 DRM_LOCK(); 524 drm_lastclose(dev); 525 DRM_UNLOCK(); 526 527 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 528 * worried about resource consumption while the DRM is inactive (between 529 * lastclose and firstopen or unload) because these aren't actually 530 * taking up KVA, just keeping the PCI resource allocated. 531 */ 532 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 533 if (dev->pcir[i] == NULL) 534 continue; 535 bus_release_resource(dev->device, SYS_RES_MEMORY, 536 dev->pcirid[i], dev->pcir[i]); 537 dev->pcir[i] = NULL; 538 } 539 540 if (dev->agp) { 541 free(dev->agp, DRM_MEM_AGPLISTS); 542 dev->agp = NULL; 543 } 544 545 if (dev->driver->unload != NULL) { 546 DRM_LOCK(); 547 dev->driver->unload(dev); 548 DRM_UNLOCK(); 549 } 550 551 delete_unrhdr(dev->drw_unrhdr); 552 delete_unrhdr(dev->map_unrhdr); 553 554 drm_mem_uninit(); 555 556 if (pci_disable_busmaster(dev->device)) 557 DRM_ERROR("Request to disable bus-master failed.\n"); 558 559 mtx_destroy(&dev->drw_lock); 560 mtx_destroy(&dev->vbl_lock); 561 mtx_destroy(&dev->irq_lock); 562 mtx_destroy(&dev->dev_lock); 563 } 564 565 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 566 { 567 struct drm_version *version = data; 568 int len; 569 570 #define DRM_COPY( name, value ) \ 571 len = strlen( value ); \ 572 if ( len > name##_len ) len = name##_len; \ 573 name##_len = strlen( value ); \ 574 if ( len && name ) { \ 575 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 576 return EFAULT; \ 577 } 578 579 version->version_major = dev->driver->major; 580 version->version_minor = dev->driver->minor; 581 version->version_patchlevel = dev->driver->patchlevel; 582 583 DRM_COPY(version->name, dev->driver->name); 584 DRM_COPY(version->date, dev->driver->date); 585 DRM_COPY(version->desc, dev->driver->desc); 586 587 return 0; 588 } 589 590 int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p) 591 { 592 struct drm_device *dev = NULL; 593 int retcode = 0; 594 595 dev = kdev->si_drv1; 596 597 DRM_DEBUG("open_count = %d\n", dev->open_count); 598 599 retcode = drm_open_helper(kdev, flags, fmt, p, dev); 600 601 if (!retcode) { 602 atomic_inc(&dev->counts[_DRM_STAT_OPENS]); 603 DRM_LOCK(); 604 device_busy(dev->device); 605 if (!dev->open_count++) 606 retcode = drm_firstopen(dev); 607 DRM_UNLOCK(); 608 } 609 610 return retcode; 611 } 612 613 void drm_close(void *data) 614 { 615 struct drm_file *file_priv = data; 616 struct drm_device *dev = file_priv->dev; 617 int retcode = 0; 618 619 DRM_DEBUG("open_count = %d\n", dev->open_count); 620 621 DRM_LOCK(); 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 retcode = mtx_sleep((void *)&dev->lock.lock_queue, 665 &dev->dev_lock, PCATCH, "drmlk2", 0); 666 if (retcode) 667 break; 668 } 669 if (retcode == 0) { 670 dev->driver->reclaim_buffers_locked(dev, file_priv); 671 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 672 } 673 } 674 675 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 676 !dev->driver->reclaim_buffers_locked) 677 drm_reclaim_buffers(dev, file_priv); 678 679 funsetown(&dev->buf_sigio); 680 681 if (dev->driver->postclose != NULL) 682 dev->driver->postclose(dev, file_priv); 683 TAILQ_REMOVE(&dev->files, file_priv, link); 684 free(file_priv, DRM_MEM_FILES); 685 686 /* ======================================================== 687 * End inline drm_release 688 */ 689 690 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 691 device_unbusy(dev->device); 692 if (--dev->open_count == 0) { 693 retcode = drm_lastclose(dev); 694 } 695 696 DRM_UNLOCK(); 697 } 698 699 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 700 */ 701 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags, 702 DRM_STRUCTPROC *p) 703 { 704 struct drm_device *dev = drm_get_device_from_kdev(kdev); 705 int retcode = 0; 706 drm_ioctl_desc_t *ioctl; 707 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 708 int nr = DRM_IOCTL_NR(cmd); 709 int is_driver_ioctl = 0; 710 struct drm_file *file_priv; 711 712 retcode = devfs_get_cdevpriv((void **)&file_priv); 713 if (retcode != 0) { 714 DRM_ERROR("can't find authenticator\n"); 715 return EINVAL; 716 } 717 718 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 719 ++file_priv->ioctl_count; 720 721 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 722 DRM_CURRENTPID, cmd, nr, (long)dev->device, 723 file_priv->authenticated); 724 725 switch (cmd) { 726 case FIONBIO: 727 case FIOASYNC: 728 return 0; 729 730 case FIOSETOWN: 731 return fsetown(*(int *)data, &dev->buf_sigio); 732 733 case FIOGETOWN: 734 *(int *) data = fgetown(&dev->buf_sigio); 735 return 0; 736 } 737 738 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 739 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 740 return EINVAL; 741 } 742 743 ioctl = &drm_ioctls[nr]; 744 /* It's not a core DRM ioctl, try driver-specific. */ 745 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 746 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 747 nr -= DRM_COMMAND_BASE; 748 if (nr > dev->driver->max_ioctl) { 749 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 750 nr, dev->driver->max_ioctl); 751 return EINVAL; 752 } 753 ioctl = &dev->driver->ioctls[nr]; 754 is_driver_ioctl = 1; 755 } 756 func = ioctl->func; 757 758 if (func == NULL) { 759 DRM_DEBUG("no function\n"); 760 return EINVAL; 761 } 762 763 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 764 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 765 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 766 return EACCES; 767 768 if (is_driver_ioctl) { 769 DRM_LOCK(); 770 /* shared code returns -errno */ 771 retcode = -func(dev, data, file_priv); 772 DRM_UNLOCK(); 773 } else { 774 retcode = func(dev, data, file_priv); 775 } 776 777 if (retcode != 0) 778 DRM_DEBUG(" returning %d\n", retcode); 779 780 return retcode; 781 } 782 783 drm_local_map_t *drm_getsarea(struct drm_device *dev) 784 { 785 drm_local_map_t *map; 786 787 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 788 TAILQ_FOREACH(map, &dev->maplist, link) { 789 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK)) 790 return map; 791 } 792 793 return NULL; 794 } 795 796 #if DRM_LINUX 797 798 #include <sys/sysproto.h> 799 800 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 801 802 #define LINUX_IOCTL_DRM_MIN 0x6400 803 #define LINUX_IOCTL_DRM_MAX 0x64ff 804 805 static linux_ioctl_function_t drm_linux_ioctl; 806 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 807 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 808 809 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 810 linux_ioctl_register_handler, &drm_handler); 811 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 812 linux_ioctl_unregister_handler, &drm_handler); 813 814 /* The bits for in/out are switched on Linux */ 815 #define LINUX_IOC_IN IOC_OUT 816 #define LINUX_IOC_OUT IOC_IN 817 818 static int 819 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 820 { 821 int error; 822 int cmd = args->cmd; 823 824 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 825 if (cmd & LINUX_IOC_IN) 826 args->cmd |= IOC_IN; 827 if (cmd & LINUX_IOC_OUT) 828 args->cmd |= IOC_OUT; 829 830 error = ioctl(p, (struct ioctl_args *)args); 831 832 return error; 833 } 834 #endif /* DRM_LINUX */ 835