1 /*- 2 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. 3 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23 * OTHER DEALINGS IN THE SOFTWARE. 24 * 25 * Authors: 26 * Rickard E. (Rik) Faith <faith@valinux.com> 27 * Gareth Hughes <gareth@valinux.com> 28 * 29 */ 30 31 /** @file drm_drv.c 32 * The catch-all file for DRM device support, including module setup/teardown, 33 * open/close, and ioctl dispatch. 34 */ 35 36 #include <machine/limits.h> 37 #include "dev/drm/drmP.h" 38 #include "dev/drm/drm.h" 39 #include "dev/drm/drm_sarea.h" 40 41 #ifdef DRM_DEBUG_DEFAULT_ON 42 int drm_debug_flag = 1; 43 #else 44 int drm_debug_flag = 0; 45 #endif 46 47 static int drm_load(struct drm_device *dev); 48 static void drm_unload(struct drm_device *dev); 49 static drm_pci_id_list_t *drm_find_description(int vendor, int device, 50 drm_pci_id_list_t *idlist); 51 52 #define DRIVER_SOFTC(unit) \ 53 ((struct drm_device *)devclass_get_softc(drm_devclass, unit)) 54 55 MODULE_VERSION(drm, 1); 56 MODULE_DEPEND(drm, agp, 1, 1, 1); 57 MODULE_DEPEND(drm, pci, 1, 1, 1); 58 MODULE_DEPEND(drm, mem, 1, 1, 1); 59 60 static drm_ioctl_desc_t drm_ioctls[256] = { 61 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), 62 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), 63 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), 64 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), 65 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), 66 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), 67 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), 68 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), 69 70 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 71 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 72 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 73 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 74 75 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 76 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), 77 78 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 79 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), 80 81 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), 82 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 83 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 84 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), 85 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 86 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 87 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), 88 89 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 90 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 91 92 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), 93 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), 94 95 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), 96 97 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 98 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 99 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), 100 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), 101 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), 102 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), 103 104 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 105 106 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 107 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 108 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 109 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), 110 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 111 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 112 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 113 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 114 115 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 116 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 117 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0), 118 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), 119 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 120 }; 121 122 static struct dev_ops drm_cdevsw = { 123 { "drm", 145, D_TRACKCLOSE }, 124 .d_open = drm_open, 125 .d_close = drm_close, 126 .d_read = drm_read, 127 .d_ioctl = drm_ioctl, 128 .d_poll = drm_poll, 129 .d_mmap = drm_mmap 130 }; 131 132 int drm_msi = 1; /* Enable by default. */ 133 TUNABLE_INT("hw.drm.msi", &drm_msi); 134 135 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { 136 {0x8086, 0x2772}, /* Intel i945G */ \ 137 {0x8086, 0x27A2}, /* Intel i945GM */ \ 138 {0x8086, 0x27AE}, /* Intel i945GME */ \ 139 {0, 0} 140 }; 141 142 static int drm_msi_is_blacklisted(int vendor, int device) 143 { 144 int i = 0; 145 146 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { 147 if ((drm_msi_blacklist[i].vendor == vendor) && 148 (drm_msi_blacklist[i].device == device)) { 149 return 1; 150 } 151 } 152 153 return 0; 154 } 155 156 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) 157 { 158 drm_pci_id_list_t *id_entry; 159 int vendor, device; 160 device_t realdev; 161 162 if (!strcmp(device_get_name(kdev), "drmsub")) 163 realdev = device_get_parent(kdev); 164 else 165 realdev = kdev; 166 vendor = pci_get_vendor(realdev); 167 device = pci_get_device(realdev); 168 169 #if 0 /* XXX */ 170 if (pci_get_class(kdev) != PCIC_DISPLAY 171 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA) 172 return ENXIO; 173 #endif 174 175 id_entry = drm_find_description(vendor, device, idlist); 176 if (id_entry != NULL) { 177 if (!device_get_desc(kdev)) { 178 DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 179 device_set_desc(kdev, id_entry->name); 180 } 181 return 0; 182 } 183 184 return ENXIO; 185 } 186 187 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 188 { 189 struct drm_device *dev; 190 drm_pci_id_list_t *id_entry; 191 int unit; 192 #if 0 193 int msicount; 194 #endif 195 196 unit = device_get_unit(kdev); 197 dev = device_get_softc(kdev); 198 199 if (!strcmp(device_get_name(kdev), "drmsub")) 200 dev->device = device_get_parent(kdev); 201 else 202 dev->device = kdev; 203 204 dev_ops_add(&drm_cdevsw, -1, unit); 205 dev->devnode = make_dev(&drm_cdevsw, 206 unit, 207 DRM_DEV_UID, 208 DRM_DEV_GID, 209 DRM_DEV_MODE, 210 "dri/card%d", unit); 211 212 dev->pci_domain = 0; 213 dev->pci_bus = pci_get_bus(dev->device); 214 dev->pci_slot = pci_get_slot(dev->device); 215 dev->pci_func = pci_get_function(dev->device); 216 217 dev->pci_vendor = pci_get_vendor(dev->device); 218 dev->pci_device = pci_get_device(dev->device); 219 220 if (drm_msi && 221 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) { 222 #if 0 223 msicount = pci_msi_count(dev->device); 224 DRM_DEBUG("MSI count = %d\n", msicount); 225 if (msicount > 1) 226 msicount = 1; 227 228 if (pci_alloc_msi(dev->device, &msicount) == 0) { 229 DRM_INFO("MSI enabled %d message(s)\n", msicount); 230 dev->msi_enabled = 1; 231 dev->irqrid = 1; 232 } 233 #endif 234 } 235 236 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ, 237 &dev->irqrid, RF_SHAREABLE); 238 if (!dev->irqr) { 239 return ENOENT; 240 } 241 242 dev->irq = (int) rman_get_start(dev->irqr); 243 244 DRM_SPININIT(&dev->dev_lock, "drmdev"); 245 lwkt_serialize_init(&dev->irq_lock); 246 DRM_SPININIT(&dev->vbl_lock, "drmvbl"); 247 DRM_SPININIT(&dev->drw_lock, "drmdrw"); 248 249 id_entry = drm_find_description(dev->pci_vendor, 250 dev->pci_device, idlist); 251 dev->id_entry = id_entry; 252 253 return drm_load(dev); 254 } 255 256 int drm_detach(device_t kdev) 257 { 258 struct drm_device *dev; 259 260 dev = device_get_softc(kdev); 261 262 drm_unload(dev); 263 264 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr); 265 266 #if 0 267 if (dev->msi_enabled) { 268 pci_release_msi(dev->device); 269 DRM_INFO("MSI released\n"); 270 } 271 #endif 272 273 return 0; 274 } 275 276 #ifndef DRM_DEV_NAME 277 #define DRM_DEV_NAME "drm" 278 #endif 279 280 devclass_t drm_devclass; 281 282 drm_pci_id_list_t *drm_find_description(int vendor, int device, 283 drm_pci_id_list_t *idlist) 284 { 285 int i = 0; 286 287 for (i = 0; idlist[i].vendor != 0; i++) { 288 if ((idlist[i].vendor == vendor) && 289 ((idlist[i].device == device) || 290 (idlist[i].device == 0))) { 291 return &idlist[i]; 292 } 293 } 294 return NULL; 295 } 296 297 static int drm_firstopen(struct drm_device *dev) 298 { 299 drm_local_map_t *map; 300 int i; 301 302 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 303 304 /* prebuild the SAREA */ 305 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, 306 _DRM_CONTAINS_LOCK, &map); 307 if (i != 0) 308 return i; 309 310 if (dev->driver->firstopen) 311 dev->driver->firstopen(dev); 312 313 dev->buf_use = 0; 314 315 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { 316 i = drm_dma_setup(dev); 317 if (i != 0) 318 return i; 319 } 320 321 for (i = 0; i < DRM_HASH_SIZE; i++) { 322 dev->magiclist[i].head = NULL; 323 dev->magiclist[i].tail = NULL; 324 } 325 326 dev->lock.lock_queue = 0; 327 dev->irq_enabled = 0; 328 dev->context_flag = 0; 329 dev->last_context = 0; 330 dev->if_version = 0; 331 332 dev->buf_sigio = NULL; 333 334 DRM_DEBUG("\n"); 335 336 return 0; 337 } 338 339 static int drm_lastclose(struct drm_device *dev) 340 { 341 drm_magic_entry_t *pt, *next; 342 drm_local_map_t *map, *mapsave; 343 int i; 344 345 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 346 347 DRM_DEBUG("\n"); 348 349 if (dev->driver->lastclose != NULL) 350 dev->driver->lastclose(dev); 351 352 if (dev->irq_enabled) 353 drm_irq_uninstall(dev); 354 355 if (dev->unique) { 356 free(dev->unique, DRM_MEM_DRIVER); 357 dev->unique = NULL; 358 dev->unique_len = 0; 359 } 360 /* Clear pid list */ 361 for (i = 0; i < DRM_HASH_SIZE; i++) { 362 for (pt = dev->magiclist[i].head; pt; pt = next) { 363 next = pt->next; 364 free(pt, DRM_MEM_MAGIC); 365 } 366 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 367 } 368 369 DRM_UNLOCK(); 370 drm_drawable_free_all(dev); 371 DRM_LOCK(); 372 373 /* Clear AGP information */ 374 if (dev->agp) { 375 drm_agp_mem_t *entry; 376 drm_agp_mem_t *nexte; 377 378 /* Remove AGP resources, but leave dev->agp intact until 379 * drm_unload is called. 380 */ 381 for (entry = dev->agp->memory; entry; entry = nexte) { 382 nexte = entry->next; 383 if (entry->bound) 384 drm_agp_unbind_memory(entry->handle); 385 drm_agp_free_memory(entry->handle); 386 free(entry, DRM_MEM_AGPLISTS); 387 } 388 dev->agp->memory = NULL; 389 390 if (dev->agp->acquired) 391 drm_agp_release(dev); 392 393 dev->agp->acquired = 0; 394 dev->agp->enabled = 0; 395 } 396 if (dev->sg != NULL) { 397 drm_sg_cleanup(dev->sg); 398 dev->sg = NULL; 399 } 400 401 TAILQ_FOREACH_MUTABLE(map, &dev->maplist, link, mapsave) { 402 if (!(map->flags & _DRM_DRIVER)) 403 drm_rmmap(dev, map); 404 } 405 406 drm_dma_takedown(dev); 407 if (dev->lock.hw_lock) { 408 dev->lock.hw_lock = NULL; /* SHM removed */ 409 dev->lock.file_priv = NULL; 410 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 411 } 412 413 return 0; 414 } 415 416 static int drm_load(struct drm_device *dev) 417 { 418 int i, retcode; 419 420 DRM_DEBUG("\n"); 421 422 TAILQ_INIT(&dev->maplist); 423 424 drm_mem_init(); 425 drm_sysctl_init(dev); 426 TAILQ_INIT(&dev->files); 427 428 dev->counters = 6; 429 dev->types[0] = _DRM_STAT_LOCK; 430 dev->types[1] = _DRM_STAT_OPENS; 431 dev->types[2] = _DRM_STAT_CLOSES; 432 dev->types[3] = _DRM_STAT_IOCTLS; 433 dev->types[4] = _DRM_STAT_LOCKS; 434 dev->types[5] = _DRM_STAT_UNLOCKS; 435 436 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 437 atomic_set(&dev->counts[i], 0); 438 439 if (dev->driver->load != NULL) { 440 DRM_LOCK(); 441 /* Shared code returns -errno. */ 442 retcode = -dev->driver->load(dev, 443 dev->id_entry->driver_private); 444 pci_enable_busmaster(dev->device); 445 DRM_UNLOCK(); 446 if (retcode != 0) 447 goto error; 448 } 449 450 if (drm_core_has_AGP(dev)) { 451 if (drm_device_is_agp(dev)) 452 dev->agp = drm_agp_init(); 453 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 454 dev->agp == NULL) { 455 DRM_ERROR("Card isn't AGP, or couldn't initialize " 456 "AGP.\n"); 457 retcode = ENOMEM; 458 goto error; 459 } 460 if (dev->agp != NULL) { 461 if (drm_mtrr_add(dev->agp->info.ai_aperture_base, 462 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0) 463 dev->agp->mtrr = 1; 464 } 465 } 466 467 retcode = drm_ctxbitmap_init(dev); 468 if (retcode != 0) { 469 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 470 goto error; 471 } 472 473 DRM_INFO("Initialized %s %d.%d.%d %s\n", 474 dev->driver->name, 475 dev->driver->major, 476 dev->driver->minor, 477 dev->driver->patchlevel, 478 dev->driver->date); 479 480 return 0; 481 482 error: 483 drm_sysctl_cleanup(dev); 484 DRM_LOCK(); 485 drm_lastclose(dev); 486 DRM_UNLOCK(); 487 destroy_dev(dev->devnode); 488 489 DRM_SPINUNINIT(&dev->drw_lock); 490 DRM_SPINUNINIT(&dev->vbl_lock); 491 DRM_SPINUNINIT(&dev->dev_lock); 492 493 return retcode; 494 } 495 496 static void drm_unload(struct drm_device *dev) 497 { 498 int i; 499 500 DRM_DEBUG("\n"); 501 502 drm_sysctl_cleanup(dev); 503 destroy_dev(dev->devnode); 504 505 drm_ctxbitmap_cleanup(dev); 506 507 if (dev->agp && dev->agp->mtrr) { 508 int __unused retcode; 509 510 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, 511 dev->agp->info.ai_aperture_size, DRM_MTRR_WC); 512 DRM_DEBUG("mtrr_del = %d", retcode); 513 } 514 515 drm_vblank_cleanup(dev); 516 517 DRM_LOCK(); 518 drm_lastclose(dev); 519 DRM_UNLOCK(); 520 521 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 522 * worried about resource consumption while the DRM is inactive (between 523 * lastclose and firstopen or unload) because these aren't actually 524 * taking up KVA, just keeping the PCI resource allocated. 525 */ 526 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 527 if (dev->pcir[i] == NULL) 528 continue; 529 bus_release_resource(dev->device, SYS_RES_MEMORY, 530 dev->pcirid[i], dev->pcir[i]); 531 dev->pcir[i] = NULL; 532 } 533 534 if (dev->agp) { 535 free(dev->agp, DRM_MEM_AGPLISTS); 536 dev->agp = NULL; 537 } 538 539 if (dev->driver->unload != NULL) { 540 DRM_LOCK(); 541 dev->driver->unload(dev); 542 DRM_UNLOCK(); 543 } 544 545 drm_mem_uninit(); 546 547 pci_disable_busmaster(dev->device); 548 549 DRM_SPINUNINIT(&dev->drw_lock); 550 DRM_SPINUNINIT(&dev->vbl_lock); 551 DRM_SPINUNINIT(&dev->dev_lock); 552 } 553 554 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 555 { 556 struct drm_version *version = data; 557 int len; 558 559 #define DRM_COPY( name, value ) \ 560 len = strlen( value ); \ 561 if ( len > name##_len ) len = name##_len; \ 562 name##_len = strlen( value ); \ 563 if ( len && name ) { \ 564 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 565 return EFAULT; \ 566 } 567 568 version->version_major = dev->driver->major; 569 version->version_minor = dev->driver->minor; 570 version->version_patchlevel = dev->driver->patchlevel; 571 572 DRM_COPY(version->name, dev->driver->name); 573 DRM_COPY(version->date, dev->driver->date); 574 DRM_COPY(version->desc, dev->driver->desc); 575 576 return 0; 577 } 578 579 int drm_open(struct dev_open_args *ap) 580 { 581 struct cdev *kdev = ap->a_head.a_dev; 582 int flags = ap->a_oflags; 583 int fmt = 0; 584 struct thread *p = curthread; 585 struct drm_device *dev = NULL; 586 int retcode = 0; 587 588 dev = DRIVER_SOFTC(minor(kdev)); 589 590 DRM_DEBUG("open_count = %d\n", dev->open_count); 591 592 retcode = drm_open_helper(kdev, flags, fmt, p, dev); 593 594 if (!retcode) { 595 atomic_inc(&dev->counts[_DRM_STAT_OPENS]); 596 DRM_LOCK(); 597 device_busy(dev->device); 598 if (!dev->open_count++) 599 retcode = drm_firstopen(dev); 600 DRM_UNLOCK(); 601 } 602 603 return retcode; 604 } 605 606 int drm_close(struct dev_close_args *ap) 607 { 608 struct cdev *kdev = ap->a_head.a_dev; 609 struct drm_file *file_priv; 610 struct drm_device *dev; 611 int retcode = 0; 612 613 dev = DRIVER_SOFTC(minor(kdev)); 614 file_priv = drm_find_file_by_proc(dev, curthread); 615 616 DRM_DEBUG("open_count = %d\n", dev->open_count); 617 618 DRM_LOCK(); 619 620 if (--file_priv->refs != 0) 621 goto done; 622 623 if (dev->driver->preclose != NULL) 624 dev->driver->preclose(dev, file_priv); 625 626 /* ======================================================== 627 * Begin inline drm_release 628 */ 629 630 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 631 DRM_CURRENTPID, (long)dev->device, dev->open_count); 632 633 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 634 && dev->lock.file_priv == file_priv) { 635 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 636 DRM_CURRENTPID, 637 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 638 if (dev->driver->reclaim_buffers_locked != NULL) 639 dev->driver->reclaim_buffers_locked(dev, file_priv); 640 641 drm_lock_free(&dev->lock, 642 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 643 644 /* FIXME: may require heavy-handed reset of 645 hardware at this point, possibly 646 processed via a callback to the X 647 server. */ 648 } else if (dev->driver->reclaim_buffers_locked != NULL && 649 dev->lock.hw_lock != NULL) { 650 /* The lock is required to reclaim buffers */ 651 for (;;) { 652 if (!dev->lock.hw_lock) { 653 /* Device has been unregistered */ 654 retcode = EINTR; 655 break; 656 } 657 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 658 dev->lock.file_priv = file_priv; 659 dev->lock.lock_time = jiffies; 660 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 661 break; /* Got lock */ 662 } 663 /* Contention */ 664 crit_enter(); 665 tsleep_interlock((void *)&dev->lock.lock_queue); 666 DRM_UNLOCK(); 667 retcode = tsleep((void *)&dev->lock.lock_queue, 668 PCATCH, "drmlk2", 0); 669 crit_exit(); 670 DRM_LOCK(); 671 if (retcode) 672 break; 673 } 674 if (retcode == 0) { 675 dev->driver->reclaim_buffers_locked(dev, file_priv); 676 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 677 } 678 } 679 680 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 681 !dev->driver->reclaim_buffers_locked) 682 drm_reclaim_buffers(dev, file_priv); 683 684 funsetown(dev->buf_sigio); 685 686 if (dev->driver->postclose != NULL) 687 dev->driver->postclose(dev, file_priv); 688 TAILQ_REMOVE(&dev->files, file_priv, link); 689 free(file_priv, DRM_MEM_FILES); 690 691 /* ======================================================== 692 * End inline drm_release 693 */ 694 done: 695 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 696 device_unbusy(dev->device); 697 if (--dev->open_count == 0) { 698 retcode = drm_lastclose(dev); 699 } 700 701 DRM_UNLOCK(); 702 703 return (0); 704 } 705 706 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 707 */ 708 int drm_ioctl(struct dev_ioctl_args *ap) 709 { 710 struct cdev *kdev = ap->a_head.a_dev; 711 u_long cmd = ap->a_cmd; 712 caddr_t data = ap->a_data; 713 struct thread *p = curthread; 714 struct drm_device *dev = drm_get_device_from_kdev(kdev); 715 int retcode = 0; 716 drm_ioctl_desc_t *ioctl; 717 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 718 int nr = DRM_IOCTL_NR(cmd); 719 int is_driver_ioctl = 0; 720 struct drm_file *file_priv; 721 722 file_priv = drm_find_file_by_proc(dev, p); 723 if (!file_priv) { 724 DRM_ERROR("can't find authenticator\n"); 725 return EINVAL; 726 } 727 728 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 729 ++file_priv->ioctl_count; 730 731 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 732 DRM_CURRENTPID, cmd, nr, (long)dev->device, 733 file_priv->authenticated); 734 735 switch (cmd) { 736 case FIONBIO: 737 case FIOASYNC: 738 return 0; 739 740 case FIOSETOWN: 741 return fsetown(*(int *)data, &dev->buf_sigio); 742 743 case FIOGETOWN: 744 *(int *) data = fgetown(dev->buf_sigio); 745 return 0; 746 } 747 748 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 749 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 750 return EINVAL; 751 } 752 753 ioctl = &drm_ioctls[nr]; 754 /* It's not a core DRM ioctl, try driver-specific. */ 755 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 756 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 757 nr -= DRM_COMMAND_BASE; 758 if (nr > dev->driver->max_ioctl) { 759 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 760 nr, dev->driver->max_ioctl); 761 return EINVAL; 762 } 763 ioctl = &dev->driver->ioctls[nr]; 764 is_driver_ioctl = 1; 765 } 766 func = ioctl->func; 767 768 if (func == NULL) { 769 DRM_DEBUG("no function\n"); 770 return EINVAL; 771 } 772 773 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 774 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 775 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 776 return EACCES; 777 778 if (is_driver_ioctl) { 779 DRM_LOCK(); 780 /* shared code returns -errno */ 781 retcode = -func(dev, data, file_priv); 782 DRM_UNLOCK(); 783 } else { 784 retcode = func(dev, data, file_priv); 785 } 786 787 if (retcode != 0) 788 DRM_DEBUG(" returning %d\n", retcode); 789 790 return retcode; 791 } 792 793 drm_local_map_t *drm_getsarea(struct drm_device *dev) 794 { 795 drm_local_map_t *map; 796 797 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 798 TAILQ_FOREACH(map, &dev->maplist, link) { 799 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK)) 800 return map; 801 } 802 803 return NULL; 804 } 805 806 #if DRM_LINUX 807 808 #include <sys/sysproto.h> 809 810 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 811 812 #define LINUX_IOCTL_DRM_MIN 0x6400 813 #define LINUX_IOCTL_DRM_MAX 0x64ff 814 815 static linux_ioctl_function_t drm_linux_ioctl; 816 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 817 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 818 819 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 820 linux_ioctl_register_handler, &drm_handler); 821 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 822 linux_ioctl_unregister_handler, &drm_handler); 823 824 /* The bits for in/out are switched on Linux */ 825 #define LINUX_IOC_IN IOC_OUT 826 #define LINUX_IOC_OUT IOC_IN 827 828 static int 829 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 830 { 831 int error; 832 int cmd = args->cmd; 833 834 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 835 if (cmd & LINUX_IOC_IN) 836 args->cmd |= IOC_IN; 837 if (cmd & LINUX_IOC_OUT) 838 args->cmd |= IOC_OUT; 839 840 error = ioctl(p, (struct ioctl_args *)args); 841 842 return error; 843 } 844 #endif /* DRM_LINUX */ 845