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