Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/drm/drm_drv.c
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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: releng/9.0/sys/dev/drm/drm_drv.c 215367 2010-11-16 03:43:06Z nwhitehorn $"); 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 TUNABLE_INT("hw.drm.msi", &drm_msi); 136 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); 137 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1, 138 "Enable MSI interrupts for drm devices"); 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 0, 214 DRM_DEV_UID, 215 DRM_DEV_GID, 216 DRM_DEV_MODE, 217 "dri/card%d", unit); 218 dev->devnode->si_drv1 = dev; 219 220 #if __FreeBSD_version >= 700053 221 dev->pci_domain = pci_get_domain(dev->device); 222 #else 223 dev->pci_domain = 0; 224 #endif 225 dev->pci_bus = pci_get_bus(dev->device); 226 dev->pci_slot = pci_get_slot(dev->device); 227 dev->pci_func = pci_get_function(dev->device); 228 229 dev->pci_vendor = pci_get_vendor(dev->device); 230 dev->pci_device = pci_get_device(dev->device); 231 232 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { 233 if (drm_msi && 234 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) { 235 msicount = pci_msi_count(dev->device); 236 DRM_DEBUG("MSI count = %d\n", msicount); 237 if (msicount > 1) 238 msicount = 1; 239 240 if (pci_alloc_msi(dev->device, &msicount) == 0) { 241 DRM_INFO("MSI enabled %d message(s)\n", 242 msicount); 243 dev->msi_enabled = 1; 244 dev->irqrid = 1; 245 } 246 } 247 248 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ, 249 &dev->irqrid, RF_SHAREABLE); 250 if (!dev->irqr) { 251 return ENOENT; 252 } 253 254 dev->irq = (int) rman_get_start(dev->irqr); 255 } 256 257 mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF); 258 mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF); 259 mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF); 260 mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF); 261 262 id_entry = drm_find_description(dev->pci_vendor, 263 dev->pci_device, idlist); 264 dev->id_entry = id_entry; 265 266 return drm_load(dev); 267 } 268 269 int drm_detach(device_t kdev) 270 { 271 struct drm_device *dev; 272 273 dev = device_get_softc(kdev); 274 275 drm_unload(dev); 276 277 if (dev->irqr) { 278 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, 279 dev->irqr); 280 281 if (dev->msi_enabled) { 282 pci_release_msi(dev->device); 283 DRM_INFO("MSI released\n"); 284 } 285 } 286 287 return 0; 288 } 289 290 #ifndef DRM_DEV_NAME 291 #define DRM_DEV_NAME "drm" 292 #endif 293 294 devclass_t drm_devclass; 295 296 drm_pci_id_list_t *drm_find_description(int vendor, int device, 297 drm_pci_id_list_t *idlist) 298 { 299 int i = 0; 300 301 for (i = 0; idlist[i].vendor != 0; i++) { 302 if ((idlist[i].vendor == vendor) && 303 ((idlist[i].device == device) || 304 (idlist[i].device == 0))) { 305 return &idlist[i]; 306 } 307 } 308 return NULL; 309 } 310 311 static int drm_firstopen(struct drm_device *dev) 312 { 313 drm_local_map_t *map; 314 int i; 315 316 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 317 318 /* prebuild the SAREA */ 319 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, 320 _DRM_CONTAINS_LOCK, &map); 321 if (i != 0) 322 return i; 323 324 if (dev->driver->firstopen) 325 dev->driver->firstopen(dev); 326 327 dev->buf_use = 0; 328 329 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { 330 i = drm_dma_setup(dev); 331 if (i != 0) 332 return i; 333 } 334 335 for (i = 0; i < DRM_HASH_SIZE; i++) { 336 dev->magiclist[i].head = NULL; 337 dev->magiclist[i].tail = NULL; 338 } 339 340 dev->lock.lock_queue = 0; 341 dev->irq_enabled = 0; 342 dev->context_flag = 0; 343 dev->last_context = 0; 344 dev->if_version = 0; 345 346 dev->buf_sigio = NULL; 347 348 DRM_DEBUG("\n"); 349 350 return 0; 351 } 352 353 static int drm_lastclose(struct drm_device *dev) 354 { 355 drm_magic_entry_t *pt, *next; 356 drm_local_map_t *map, *mapsave; 357 int i; 358 359 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 360 361 DRM_DEBUG("\n"); 362 363 if (dev->driver->lastclose != NULL) 364 dev->driver->lastclose(dev); 365 366 if (dev->irq_enabled) 367 drm_irq_uninstall(dev); 368 369 if (dev->unique) { 370 free(dev->unique, DRM_MEM_DRIVER); 371 dev->unique = NULL; 372 dev->unique_len = 0; 373 } 374 /* Clear pid list */ 375 for (i = 0; i < DRM_HASH_SIZE; i++) { 376 for (pt = dev->magiclist[i].head; pt; pt = next) { 377 next = pt->next; 378 free(pt, DRM_MEM_MAGIC); 379 } 380 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 381 } 382 383 DRM_UNLOCK(); 384 drm_drawable_free_all(dev); 385 DRM_LOCK(); 386 387 /* Clear AGP information */ 388 if (dev->agp) { 389 drm_agp_mem_t *entry; 390 drm_agp_mem_t *nexte; 391 392 /* Remove AGP resources, but leave dev->agp intact until 393 * drm_unload is called. 394 */ 395 for (entry = dev->agp->memory; entry; entry = nexte) { 396 nexte = entry->next; 397 if (entry->bound) 398 drm_agp_unbind_memory(entry->handle); 399 drm_agp_free_memory(entry->handle); 400 free(entry, DRM_MEM_AGPLISTS); 401 } 402 dev->agp->memory = NULL; 403 404 if (dev->agp->acquired) 405 drm_agp_release(dev); 406 407 dev->agp->acquired = 0; 408 dev->agp->enabled = 0; 409 } 410 if (dev->sg != NULL) { 411 drm_sg_cleanup(dev->sg); 412 dev->sg = NULL; 413 } 414 415 TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) { 416 if (!(map->flags & _DRM_DRIVER)) 417 drm_rmmap(dev, map); 418 } 419 420 drm_dma_takedown(dev); 421 if (dev->lock.hw_lock) { 422 dev->lock.hw_lock = NULL; /* SHM removed */ 423 dev->lock.file_priv = NULL; 424 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 425 } 426 427 return 0; 428 } 429 430 static int drm_load(struct drm_device *dev) 431 { 432 int i, retcode; 433 434 DRM_DEBUG("\n"); 435 436 TAILQ_INIT(&dev->maplist); 437 dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL); 438 if (dev->map_unrhdr == NULL) { 439 DRM_ERROR("Couldn't allocate map number allocator\n"); 440 return EINVAL; 441 } 442 443 444 drm_mem_init(); 445 drm_sysctl_init(dev); 446 TAILQ_INIT(&dev->files); 447 448 dev->counters = 6; 449 dev->types[0] = _DRM_STAT_LOCK; 450 dev->types[1] = _DRM_STAT_OPENS; 451 dev->types[2] = _DRM_STAT_CLOSES; 452 dev->types[3] = _DRM_STAT_IOCTLS; 453 dev->types[4] = _DRM_STAT_LOCKS; 454 dev->types[5] = _DRM_STAT_UNLOCKS; 455 456 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 457 atomic_set(&dev->counts[i], 0); 458 459 if (dev->driver->load != NULL) { 460 DRM_LOCK(); 461 /* Shared code returns -errno. */ 462 retcode = -dev->driver->load(dev, 463 dev->id_entry->driver_private); 464 if (pci_enable_busmaster(dev->device)) 465 DRM_ERROR("Request to enable bus-master failed.\n"); 466 DRM_UNLOCK(); 467 if (retcode != 0) 468 goto error; 469 } 470 471 if (drm_core_has_AGP(dev)) { 472 if (drm_device_is_agp(dev)) 473 dev->agp = drm_agp_init(); 474 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 475 dev->agp == NULL) { 476 DRM_ERROR("Card isn't AGP, or couldn't initialize " 477 "AGP.\n"); 478 retcode = ENOMEM; 479 goto error; 480 } 481 if (dev->agp != NULL && dev->agp->info.ai_aperture_base != 0) { 482 if (drm_mtrr_add(dev->agp->info.ai_aperture_base, 483 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0) 484 dev->agp->mtrr = 1; 485 } 486 } 487 488 retcode = drm_ctxbitmap_init(dev); 489 if (retcode != 0) { 490 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 491 goto error; 492 } 493 494 dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL); 495 if (dev->drw_unrhdr == NULL) { 496 DRM_ERROR("Couldn't allocate drawable number allocator\n"); 497 goto error; 498 } 499 500 DRM_INFO("Initialized %s %d.%d.%d %s\n", 501 dev->driver->name, 502 dev->driver->major, 503 dev->driver->minor, 504 dev->driver->patchlevel, 505 dev->driver->date); 506 507 return 0; 508 509 error: 510 drm_sysctl_cleanup(dev); 511 DRM_LOCK(); 512 drm_lastclose(dev); 513 DRM_UNLOCK(); 514 destroy_dev(dev->devnode); 515 516 mtx_destroy(&dev->drw_lock); 517 mtx_destroy(&dev->vbl_lock); 518 mtx_destroy(&dev->irq_lock); 519 mtx_destroy(&dev->dev_lock); 520 521 return retcode; 522 } 523 524 static void drm_unload(struct drm_device *dev) 525 { 526 int i; 527 528 DRM_DEBUG("\n"); 529 530 drm_sysctl_cleanup(dev); 531 destroy_dev(dev->devnode); 532 533 drm_ctxbitmap_cleanup(dev); 534 535 if (dev->agp && dev->agp->mtrr) { 536 int __unused retcode; 537 538 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, 539 dev->agp->info.ai_aperture_size, DRM_MTRR_WC); 540 DRM_DEBUG("mtrr_del = %d", retcode); 541 } 542 543 drm_vblank_cleanup(dev); 544 545 DRM_LOCK(); 546 drm_lastclose(dev); 547 DRM_UNLOCK(); 548 549 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 550 * worried about resource consumption while the DRM is inactive (between 551 * lastclose and firstopen or unload) because these aren't actually 552 * taking up KVA, just keeping the PCI resource allocated. 553 */ 554 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 555 if (dev->pcir[i] == NULL) 556 continue; 557 bus_release_resource(dev->device, SYS_RES_MEMORY, 558 dev->pcirid[i], dev->pcir[i]); 559 dev->pcir[i] = NULL; 560 } 561 562 if (dev->agp) { 563 free(dev->agp, DRM_MEM_AGPLISTS); 564 dev->agp = NULL; 565 } 566 567 if (dev->driver->unload != NULL) { 568 DRM_LOCK(); 569 dev->driver->unload(dev); 570 DRM_UNLOCK(); 571 } 572 573 delete_unrhdr(dev->drw_unrhdr); 574 delete_unrhdr(dev->map_unrhdr); 575 576 drm_mem_uninit(); 577 578 if (pci_disable_busmaster(dev->device)) 579 DRM_ERROR("Request to disable bus-master failed.\n"); 580 581 mtx_destroy(&dev->drw_lock); 582 mtx_destroy(&dev->vbl_lock); 583 mtx_destroy(&dev->irq_lock); 584 mtx_destroy(&dev->dev_lock); 585 } 586 587 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 588 { 589 struct drm_version *version = data; 590 int len; 591 592 #define DRM_COPY( name, value ) \ 593 len = strlen( value ); \ 594 if ( len > name##_len ) len = name##_len; \ 595 name##_len = strlen( value ); \ 596 if ( len && name ) { \ 597 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 598 return EFAULT; \ 599 } 600 601 version->version_major = dev->driver->major; 602 version->version_minor = dev->driver->minor; 603 version->version_patchlevel = dev->driver->patchlevel; 604 605 DRM_COPY(version->name, dev->driver->name); 606 DRM_COPY(version->date, dev->driver->date); 607 DRM_COPY(version->desc, dev->driver->desc); 608 609 return 0; 610 } 611 612 int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p) 613 { 614 struct drm_device *dev = NULL; 615 int retcode = 0; 616 617 dev = kdev->si_drv1; 618 619 DRM_DEBUG("open_count = %d\n", dev->open_count); 620 621 retcode = drm_open_helper(kdev, flags, fmt, p, dev); 622 623 if (!retcode) { 624 atomic_inc(&dev->counts[_DRM_STAT_OPENS]); 625 DRM_LOCK(); 626 device_busy(dev->device); 627 if (!dev->open_count++) 628 retcode = drm_firstopen(dev); 629 DRM_UNLOCK(); 630 } 631 632 return retcode; 633 } 634 635 void drm_close(void *data) 636 { 637 struct drm_file *file_priv = data; 638 struct drm_device *dev = file_priv->dev; 639 int retcode = 0; 640 641 DRM_DEBUG("open_count = %d\n", dev->open_count); 642 643 DRM_LOCK(); 644 645 if (dev->driver->preclose != NULL) 646 dev->driver->preclose(dev, file_priv); 647 648 /* ======================================================== 649 * Begin inline drm_release 650 */ 651 652 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 653 DRM_CURRENTPID, (long)dev->device, dev->open_count); 654 655 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 656 && dev->lock.file_priv == file_priv) { 657 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 658 DRM_CURRENTPID, 659 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 660 if (dev->driver->reclaim_buffers_locked != NULL) 661 dev->driver->reclaim_buffers_locked(dev, file_priv); 662 663 drm_lock_free(&dev->lock, 664 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 665 666 /* FIXME: may require heavy-handed reset of 667 hardware at this point, possibly 668 processed via a callback to the X 669 server. */ 670 } else if (dev->driver->reclaim_buffers_locked != NULL && 671 dev->lock.hw_lock != NULL) { 672 /* The lock is required to reclaim buffers */ 673 for (;;) { 674 if (!dev->lock.hw_lock) { 675 /* Device has been unregistered */ 676 retcode = EINTR; 677 break; 678 } 679 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 680 dev->lock.file_priv = file_priv; 681 dev->lock.lock_time = jiffies; 682 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 683 break; /* Got lock */ 684 } 685 /* Contention */ 686 retcode = mtx_sleep((void *)&dev->lock.lock_queue, 687 &dev->dev_lock, PCATCH, "drmlk2", 0); 688 if (retcode) 689 break; 690 } 691 if (retcode == 0) { 692 dev->driver->reclaim_buffers_locked(dev, file_priv); 693 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 694 } 695 } 696 697 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 698 !dev->driver->reclaim_buffers_locked) 699 drm_reclaim_buffers(dev, file_priv); 700 701 funsetown(&dev->buf_sigio); 702 703 if (dev->driver->postclose != NULL) 704 dev->driver->postclose(dev, file_priv); 705 TAILQ_REMOVE(&dev->files, file_priv, link); 706 free(file_priv, DRM_MEM_FILES); 707 708 /* ======================================================== 709 * End inline drm_release 710 */ 711 712 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 713 device_unbusy(dev->device); 714 if (--dev->open_count == 0) { 715 retcode = drm_lastclose(dev); 716 } 717 718 DRM_UNLOCK(); 719 } 720 721 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 722 */ 723 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags, 724 DRM_STRUCTPROC *p) 725 { 726 struct drm_device *dev = drm_get_device_from_kdev(kdev); 727 int retcode = 0; 728 drm_ioctl_desc_t *ioctl; 729 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 730 int nr = DRM_IOCTL_NR(cmd); 731 int is_driver_ioctl = 0; 732 struct drm_file *file_priv; 733 734 retcode = devfs_get_cdevpriv((void **)&file_priv); 735 if (retcode != 0) { 736 DRM_ERROR("can't find authenticator\n"); 737 return EINVAL; 738 } 739 740 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 741 ++file_priv->ioctl_count; 742 743 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 744 DRM_CURRENTPID, cmd, nr, (long)dev->device, 745 file_priv->authenticated); 746 747 switch (cmd) { 748 case FIONBIO: 749 case FIOASYNC: 750 return 0; 751 752 case FIOSETOWN: 753 return fsetown(*(int *)data, &dev->buf_sigio); 754 755 case FIOGETOWN: 756 *(int *) data = fgetown(&dev->buf_sigio); 757 return 0; 758 } 759 760 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 761 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 762 return EINVAL; 763 } 764 765 ioctl = &drm_ioctls[nr]; 766 /* It's not a core DRM ioctl, try driver-specific. */ 767 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 768 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 769 nr -= DRM_COMMAND_BASE; 770 if (nr > dev->driver->max_ioctl) { 771 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 772 nr, dev->driver->max_ioctl); 773 return EINVAL; 774 } 775 ioctl = &dev->driver->ioctls[nr]; 776 is_driver_ioctl = 1; 777 } 778 func = ioctl->func; 779 780 if (func == NULL) { 781 DRM_DEBUG("no function\n"); 782 return EINVAL; 783 } 784 785 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 786 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 787 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 788 return EACCES; 789 790 if (is_driver_ioctl) { 791 DRM_LOCK(); 792 /* shared code returns -errno */ 793 retcode = -func(dev, data, file_priv); 794 DRM_UNLOCK(); 795 } else { 796 retcode = func(dev, data, file_priv); 797 } 798 799 if (retcode != 0) 800 DRM_DEBUG(" returning %d\n", retcode); 801 802 return retcode; 803 } 804 805 drm_local_map_t *drm_getsarea(struct drm_device *dev) 806 { 807 drm_local_map_t *map; 808 809 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 810 TAILQ_FOREACH(map, &dev->maplist, link) { 811 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK)) 812 return map; 813 } 814 815 return NULL; 816 } 817 818 #if DRM_LINUX 819 820 #include <sys/sysproto.h> 821 822 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 823 824 #define LINUX_IOCTL_DRM_MIN 0x6400 825 #define LINUX_IOCTL_DRM_MAX 0x64ff 826 827 static linux_ioctl_function_t drm_linux_ioctl; 828 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 829 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 830 831 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 832 linux_ioctl_register_handler, &drm_handler); 833 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 834 linux_ioctl_unregister_handler, &drm_handler); 835 836 /* The bits for in/out are switched on Linux */ 837 #define LINUX_IOC_IN IOC_OUT 838 #define LINUX_IOC_OUT IOC_IN 839 840 static int 841 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 842 { 843 int error; 844 int cmd = args->cmd; 845 846 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 847 if (cmd & LINUX_IOC_IN) 848 args->cmd |= IOC_IN; 849 if (cmd & LINUX_IOC_OUT) 850 args->cmd |= IOC_OUT; 851 852 error = ioctl(p, (struct ioctl_args *)args); 853 854 return error; 855 } 856 #endif /* DRM_LINUX */
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