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