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_read = drm_read, 126 .d_ioctl = drm_ioctl, 127 .d_poll = drm_poll, 128 .d_mmap = drm_mmap 129 }; 130 131 int drm_msi = 1; /* Enable by default. */ 132 TUNABLE_INT("hw.drm.msi", &drm_msi); 133 134 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { 135 {0x8086, 0x2772}, /* Intel i945G */ \ 136 {0x8086, 0x27A2}, /* Intel i945GM */ \ 137 {0x8086, 0x27AE}, /* Intel i945GME */ \ 138 {0, 0} 139 }; 140 141 static int drm_msi_is_blacklisted(int vendor, int device) 142 { 143 int i = 0; 144 145 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { 146 if ((drm_msi_blacklist[i].vendor == vendor) && 147 (drm_msi_blacklist[i].device == device)) { 148 return 1; 149 } 150 } 151 152 return 0; 153 } 154 155 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) 156 { 157 drm_pci_id_list_t *id_entry; 158 int vendor, device; 159 device_t realdev; 160 161 if (!strcmp(device_get_name(kdev), "drmsub")) 162 realdev = device_get_parent(kdev); 163 else 164 realdev = kdev; 165 vendor = pci_get_vendor(realdev); 166 device = pci_get_device(realdev); 167 168 #if 0 /* XXX */ 169 if (pci_get_class(kdev) != PCIC_DISPLAY 170 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA) 171 return ENXIO; 172 #endif 173 174 id_entry = drm_find_description(vendor, device, idlist); 175 if (id_entry != NULL) { 176 if (!device_get_desc(kdev)) { 177 DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 178 device_set_desc(kdev, id_entry->name); 179 } 180 return 0; 181 } 182 183 return ENXIO; 184 } 185 186 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 187 { 188 struct drm_device *dev; 189 drm_pci_id_list_t *id_entry; 190 int unit; 191 #if 0 192 int msicount; 193 #endif 194 195 unit = device_get_unit(kdev); 196 dev = device_get_softc(kdev); 197 198 if (!strcmp(device_get_name(kdev), "drmsub")) 199 dev->device = device_get_parent(kdev); 200 else 201 dev->device = kdev; 202 203 dev_ops_add(&drm_cdevsw, -1, unit); 204 dev->devnode = make_dev(&drm_cdevsw, 205 unit, 206 DRM_DEV_UID, 207 DRM_DEV_GID, 208 DRM_DEV_MODE, 209 "dri/card%d", unit); 210 211 dev->pci_domain = 0; 212 dev->pci_bus = pci_get_bus(dev->device); 213 dev->pci_slot = pci_get_slot(dev->device); 214 dev->pci_func = pci_get_function(dev->device); 215 216 dev->pci_vendor = pci_get_vendor(dev->device); 217 dev->pci_device = pci_get_device(dev->device); 218 219 if (drm_msi && 220 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) { 221 #if 0 222 msicount = pci_msi_count(dev->device); 223 DRM_DEBUG("MSI count = %d\n", msicount); 224 if (msicount > 1) 225 msicount = 1; 226 227 if (pci_alloc_msi(dev->device, &msicount) == 0) { 228 DRM_INFO("MSI enabled %d message(s)\n", msicount); 229 dev->msi_enabled = 1; 230 dev->irqrid = 1; 231 } 232 #endif 233 } 234 235 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ, 236 &dev->irqrid, RF_SHAREABLE); 237 if (!dev->irqr) { 238 return ENOENT; 239 } 240 241 dev->irq = (int) rman_get_start(dev->irqr); 242 243 DRM_SPININIT(&dev->dev_lock, "drmdev"); 244 lwkt_serialize_init(&dev->irq_lock); 245 DRM_SPININIT(&dev->vbl_lock, "drmvbl"); 246 DRM_SPININIT(&dev->drw_lock, "drmdrw"); 247 248 id_entry = drm_find_description(dev->pci_vendor, 249 dev->pci_device, idlist); 250 dev->id_entry = id_entry; 251 252 return drm_load(dev); 253 } 254 255 int drm_detach(device_t kdev) 256 { 257 struct drm_device *dev; 258 259 dev = device_get_softc(kdev); 260 261 drm_unload(dev); 262 263 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr); 264 265 #if 0 266 if (dev->msi_enabled) { 267 pci_release_msi(dev->device); 268 DRM_INFO("MSI released\n"); 269 } 270 #endif 271 272 return 0; 273 } 274 275 #ifndef DRM_DEV_NAME 276 #define DRM_DEV_NAME "drm" 277 #endif 278 279 devclass_t drm_devclass; 280 281 drm_pci_id_list_t *drm_find_description(int vendor, int device, 282 drm_pci_id_list_t *idlist) 283 { 284 int i = 0; 285 286 for (i = 0; idlist[i].vendor != 0; i++) { 287 if ((idlist[i].vendor == vendor) && 288 ((idlist[i].device == device) || 289 (idlist[i].device == 0))) { 290 return &idlist[i]; 291 } 292 } 293 return NULL; 294 } 295 296 static int drm_firstopen(struct drm_device *dev) 297 { 298 drm_local_map_t *map; 299 int i; 300 301 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 302 303 /* prebuild the SAREA */ 304 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, 305 _DRM_CONTAINS_LOCK, &map); 306 if (i != 0) 307 return i; 308 309 if (dev->driver->firstopen) 310 dev->driver->firstopen(dev); 311 312 dev->buf_use = 0; 313 314 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { 315 i = drm_dma_setup(dev); 316 if (i != 0) 317 return i; 318 } 319 320 for (i = 0; i < DRM_HASH_SIZE; i++) { 321 dev->magiclist[i].head = NULL; 322 dev->magiclist[i].tail = NULL; 323 } 324 325 dev->lock.lock_queue = 0; 326 dev->irq_enabled = 0; 327 dev->context_flag = 0; 328 dev->last_context = 0; 329 dev->if_version = 0; 330 331 dev->buf_sigio = NULL; 332 333 DRM_DEBUG("\n"); 334 335 return 0; 336 } 337 338 static int drm_lastclose(struct drm_device *dev) 339 { 340 drm_magic_entry_t *pt, *next; 341 drm_local_map_t *map, *mapsave; 342 int i; 343 344 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 345 346 DRM_DEBUG("\n"); 347 348 if (dev->driver->lastclose != NULL) 349 dev->driver->lastclose(dev); 350 351 if (dev->irq_enabled) 352 drm_irq_uninstall(dev); 353 354 if (dev->unique) { 355 free(dev->unique, DRM_MEM_DRIVER); 356 dev->unique = NULL; 357 dev->unique_len = 0; 358 } 359 /* Clear pid list */ 360 for (i = 0; i < DRM_HASH_SIZE; i++) { 361 for (pt = dev->magiclist[i].head; pt; pt = next) { 362 next = pt->next; 363 free(pt, DRM_MEM_MAGIC); 364 } 365 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 366 } 367 368 DRM_UNLOCK(); 369 drm_drawable_free_all(dev); 370 DRM_LOCK(); 371 372 /* Clear AGP information */ 373 if (dev->agp) { 374 drm_agp_mem_t *entry; 375 drm_agp_mem_t *nexte; 376 377 /* Remove AGP resources, but leave dev->agp intact until 378 * drm_unload is called. 379 */ 380 for (entry = dev->agp->memory; entry; entry = nexte) { 381 nexte = entry->next; 382 if (entry->bound) 383 drm_agp_unbind_memory(entry->handle); 384 drm_agp_free_memory(entry->handle); 385 free(entry, DRM_MEM_AGPLISTS); 386 } 387 dev->agp->memory = NULL; 388 389 if (dev->agp->acquired) 390 drm_agp_release(dev); 391 392 dev->agp->acquired = 0; 393 dev->agp->enabled = 0; 394 } 395 if (dev->sg != NULL) { 396 drm_sg_cleanup(dev->sg); 397 dev->sg = NULL; 398 } 399 400 TAILQ_FOREACH_MUTABLE(map, &dev->maplist, link, mapsave) { 401 if (!(map->flags & _DRM_DRIVER)) 402 drm_rmmap(dev, map); 403 } 404 405 drm_dma_takedown(dev); 406 if (dev->lock.hw_lock) { 407 dev->lock.hw_lock = NULL; /* SHM removed */ 408 dev->lock.file_priv = NULL; 409 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 410 } 411 412 return 0; 413 } 414 415 static int drm_load(struct drm_device *dev) 416 { 417 int i, retcode; 418 419 DRM_DEBUG("\n"); 420 421 TAILQ_INIT(&dev->maplist); 422 423 drm_mem_init(); 424 drm_sysctl_init(dev); 425 TAILQ_INIT(&dev->files); 426 427 dev->counters = 6; 428 dev->types[0] = _DRM_STAT_LOCK; 429 dev->types[1] = _DRM_STAT_OPENS; 430 dev->types[2] = _DRM_STAT_CLOSES; 431 dev->types[3] = _DRM_STAT_IOCTLS; 432 dev->types[4] = _DRM_STAT_LOCKS; 433 dev->types[5] = _DRM_STAT_UNLOCKS; 434 435 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 436 atomic_set(&dev->counts[i], 0); 437 438 if (dev->driver->load != NULL) { 439 DRM_LOCK(); 440 /* Shared code returns -errno. */ 441 retcode = -dev->driver->load(dev, 442 dev->id_entry->driver_private); 443 pci_enable_busmaster(dev->device); 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) { 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 DRM_INFO("Initialized %s %d.%d.%d %s\n", 473 dev->driver->name, 474 dev->driver->major, 475 dev->driver->minor, 476 dev->driver->patchlevel, 477 dev->driver->date); 478 479 return 0; 480 481 error: 482 drm_sysctl_cleanup(dev); 483 DRM_LOCK(); 484 drm_lastclose(dev); 485 DRM_UNLOCK(); 486 destroy_dev(dev->devnode); 487 488 DRM_SPINUNINIT(&dev->drw_lock); 489 DRM_SPINUNINIT(&dev->vbl_lock); 490 DRM_SPINUNINIT(&dev->dev_lock); 491 492 return retcode; 493 } 494 495 static void drm_unload(struct drm_device *dev) 496 { 497 int i; 498 499 DRM_DEBUG("\n"); 500 501 drm_sysctl_cleanup(dev); 502 destroy_dev(dev->devnode); 503 504 drm_ctxbitmap_cleanup(dev); 505 506 if (dev->agp && dev->agp->mtrr) { 507 int __unused retcode; 508 509 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, 510 dev->agp->info.ai_aperture_size, DRM_MTRR_WC); 511 DRM_DEBUG("mtrr_del = %d", retcode); 512 } 513 514 drm_vblank_cleanup(dev); 515 516 DRM_LOCK(); 517 drm_lastclose(dev); 518 DRM_UNLOCK(); 519 520 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 521 * worried about resource consumption while the DRM is inactive (between 522 * lastclose and firstopen or unload) because these aren't actually 523 * taking up KVA, just keeping the PCI resource allocated. 524 */ 525 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 526 if (dev->pcir[i] == NULL) 527 continue; 528 bus_release_resource(dev->device, SYS_RES_MEMORY, 529 dev->pcirid[i], dev->pcir[i]); 530 dev->pcir[i] = NULL; 531 } 532 533 if (dev->agp) { 534 free(dev->agp, DRM_MEM_AGPLISTS); 535 dev->agp = NULL; 536 } 537 538 if (dev->driver->unload != NULL) { 539 DRM_LOCK(); 540 dev->driver->unload(dev); 541 DRM_UNLOCK(); 542 } 543 544 drm_mem_uninit(); 545 546 pci_disable_busmaster(dev->device); 547 548 DRM_SPINUNINIT(&dev->drw_lock); 549 DRM_SPINUNINIT(&dev->vbl_lock); 550 DRM_SPINUNINIT(&dev->dev_lock); 551 } 552 553 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 554 { 555 struct drm_version *version = data; 556 int len; 557 558 #define DRM_COPY( name, value ) \ 559 len = strlen( value ); \ 560 if ( len > name##_len ) len = name##_len; \ 561 name##_len = strlen( value ); \ 562 if ( len && name ) { \ 563 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 564 return EFAULT; \ 565 } 566 567 version->version_major = dev->driver->major; 568 version->version_minor = dev->driver->minor; 569 version->version_patchlevel = dev->driver->patchlevel; 570 571 DRM_COPY(version->name, dev->driver->name); 572 DRM_COPY(version->date, dev->driver->date); 573 DRM_COPY(version->desc, dev->driver->desc); 574 575 return 0; 576 } 577 578 int drm_open(struct dev_open_args *ap) 579 { 580 struct cdev *kdev = ap->a_head.a_dev; 581 int flags = ap->a_oflags; 582 int fmt = 0; 583 struct thread *p = curthread; 584 struct drm_device *dev = NULL; 585 int retcode = 0; 586 587 dev = DRIVER_SOFTC(minor(kdev)); 588 589 DRM_DEBUG("open_count = %d\n", dev->open_count); 590 591 retcode = drm_open_helper(kdev, flags, fmt, p, dev); 592 593 if (!retcode) { 594 atomic_inc(&dev->counts[_DRM_STAT_OPENS]); 595 DRM_LOCK(); 596 device_busy(dev->device); 597 if (!dev->open_count++) 598 retcode = drm_firstopen(dev); 599 DRM_UNLOCK(); 600 } 601 602 return retcode; 603 } 604 605 void drm_close(void *data) 606 { 607 struct drm_file *file_priv = data; 608 struct drm_device *dev = file_priv->dev; 609 int retcode = 0; 610 611 DRM_DEBUG("open_count = %d\n", dev->open_count); 612 613 DRM_LOCK(); 614 615 if (--file_priv->refs != 0) 616 goto done; 617 618 if (dev->driver->preclose != NULL) 619 dev->driver->preclose(dev, file_priv); 620 621 /* ======================================================== 622 * Begin inline drm_release 623 */ 624 625 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 626 DRM_CURRENTPID, (long)dev->device, dev->open_count); 627 628 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 629 && dev->lock.file_priv == file_priv) { 630 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 631 DRM_CURRENTPID, 632 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 633 if (dev->driver->reclaim_buffers_locked != NULL) 634 dev->driver->reclaim_buffers_locked(dev, file_priv); 635 636 drm_lock_free(&dev->lock, 637 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 638 639 /* FIXME: may require heavy-handed reset of 640 hardware at this point, possibly 641 processed via a callback to the X 642 server. */ 643 } else if (dev->driver->reclaim_buffers_locked != NULL && 644 dev->lock.hw_lock != NULL) { 645 /* The lock is required to reclaim buffers */ 646 for (;;) { 647 if (!dev->lock.hw_lock) { 648 /* Device has been unregistered */ 649 retcode = EINTR; 650 break; 651 } 652 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 653 dev->lock.file_priv = file_priv; 654 dev->lock.lock_time = jiffies; 655 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 656 break; /* Got lock */ 657 } 658 /* Contention */ 659 crit_enter(); 660 tsleep_interlock((void *)&dev->lock.lock_queue); 661 DRM_UNLOCK(); 662 retcode = tsleep((void *)&dev->lock.lock_queue, 663 PCATCH, "drmlk2", 0); 664 crit_exit(); 665 DRM_LOCK(); 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 done: 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 dev_ioctl_args *ap) 702 { 703 struct cdev *kdev = ap->a_head.a_dev; 704 u_long cmd = ap->a_cmd; 705 caddr_t data = ap->a_data; 706 struct thread *p = curthread; 707 struct drm_device *dev = drm_get_device_from_kdev(kdev); 708 int retcode = 0; 709 drm_ioctl_desc_t *ioctl; 710 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 711 int nr = DRM_IOCTL_NR(cmd); 712 int is_driver_ioctl = 0; 713 struct drm_file *file_priv; 714 715 file_priv = drm_find_file_by_proc(dev, p); 716 if (!file_priv) { 717 DRM_ERROR("can't find authenticator\n"); 718 return EINVAL; 719 } 720 721 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 722 ++file_priv->ioctl_count; 723 724 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 725 DRM_CURRENTPID, cmd, nr, (long)dev->device, 726 file_priv->authenticated); 727 728 switch (cmd) { 729 case FIONBIO: 730 case FIOASYNC: 731 return 0; 732 733 case FIOSETOWN: 734 return fsetown(*(int *)data, &dev->buf_sigio); 735 736 case FIOGETOWN: 737 *(int *) data = fgetown(dev->buf_sigio); 738 return 0; 739 } 740 741 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 742 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 743 return EINVAL; 744 } 745 746 ioctl = &drm_ioctls[nr]; 747 /* It's not a core DRM ioctl, try driver-specific. */ 748 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 749 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 750 nr -= DRM_COMMAND_BASE; 751 if (nr > dev->driver->max_ioctl) { 752 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 753 nr, dev->driver->max_ioctl); 754 return EINVAL; 755 } 756 ioctl = &dev->driver->ioctls[nr]; 757 is_driver_ioctl = 1; 758 } 759 func = ioctl->func; 760 761 if (func == NULL) { 762 DRM_DEBUG("no function\n"); 763 return EINVAL; 764 } 765 766 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 767 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 768 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 769 return EACCES; 770 771 if (is_driver_ioctl) { 772 DRM_LOCK(); 773 /* shared code returns -errno */ 774 retcode = -func(dev, data, file_priv); 775 DRM_UNLOCK(); 776 } else { 777 retcode = func(dev, data, file_priv); 778 } 779 780 if (retcode != 0) 781 DRM_DEBUG(" returning %d\n", retcode); 782 783 return retcode; 784 } 785 786 drm_local_map_t *drm_getsarea(struct drm_device *dev) 787 { 788 drm_local_map_t *map; 789 790 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 791 TAILQ_FOREACH(map, &dev->maplist, link) { 792 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK)) 793 return map; 794 } 795 796 return NULL; 797 } 798 799 #if DRM_LINUX 800 801 #include <sys/sysproto.h> 802 803 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 804 805 #define LINUX_IOCTL_DRM_MIN 0x6400 806 #define LINUX_IOCTL_DRM_MAX 0x64ff 807 808 static linux_ioctl_function_t drm_linux_ioctl; 809 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 810 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 811 812 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 813 linux_ioctl_register_handler, &drm_handler); 814 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 815 linux_ioctl_unregister_handler, &drm_handler); 816 817 /* The bits for in/out are switched on Linux */ 818 #define LINUX_IOC_IN IOC_OUT 819 #define LINUX_IOC_OUT IOC_IN 820 821 static int 822 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 823 { 824 int error; 825 int cmd = args->cmd; 826 827 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 828 if (cmd & LINUX_IOC_IN) 829 args->cmd |= IOC_IN; 830 if (cmd & LINUX_IOC_OUT) 831 args->cmd |= IOC_OUT; 832 833 error = ioctl(p, (struct ioctl_args *)args); 834 835 return error; 836 } 837 #endif /* DRM_LINUX */ 838