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; 160 161 vendor = pci_get_vendor(kdev); 162 device = pci_get_device(kdev); 163 164 if (pci_get_class(kdev) != PCIC_DISPLAY 165 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA) 166 return ENXIO; 167 168 id_entry = drm_find_description(vendor, device, idlist); 169 if (id_entry != NULL) { 170 if (!device_get_desc(kdev)) { 171 DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 172 device_set_desc(kdev, id_entry->name); 173 } 174 return 0; 175 } 176 177 return ENXIO; 178 } 179 180 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 181 { 182 struct drm_device *dev; 183 drm_pci_id_list_t *id_entry; 184 int unit; 185 #if 0 186 int msicount; 187 #endif 188 189 unit = device_get_unit(kdev); 190 dev = device_get_softc(kdev); 191 192 if (!strcmp(device_get_name(kdev), "drmsub")) 193 dev->device = device_get_parent(kdev); 194 else 195 dev->device = kdev; 196 197 dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID, 198 DRM_DEV_MODE, "dri/card%d", unit); 199 200 dev->pci_domain = 0; 201 dev->pci_bus = pci_get_bus(dev->device); 202 dev->pci_slot = pci_get_slot(dev->device); 203 dev->pci_func = pci_get_function(dev->device); 204 205 dev->pci_vendor = pci_get_vendor(dev->device); 206 dev->pci_device = pci_get_device(dev->device); 207 208 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { 209 if (drm_msi && 210 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) { 211 #if 0 212 msicount = pci_msi_count(dev->device); 213 DRM_DEBUG("MSI count = %d\n", msicount); 214 if (msicount > 1) 215 msicount = 1; 216 217 if (pci_alloc_msi(dev->device, &msicount) == 0) { 218 DRM_INFO("MSI enabled %d message(s)\n", 219 msicount); 220 dev->msi_enabled = 1; 221 dev->irqrid = 1; 222 } 223 #endif 224 } 225 226 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ, 227 &dev->irqrid, RF_SHAREABLE); 228 if (!dev->irqr) { 229 return ENOENT; 230 } 231 232 dev->irq = (int) rman_get_start(dev->irqr); 233 } 234 235 DRM_SPININIT(&dev->dev_lock, "drmdev"); 236 lwkt_serialize_init(&dev->irq_lock); 237 DRM_SPININIT(&dev->vbl_lock, "drmvbl"); 238 DRM_SPININIT(&dev->drw_lock, "drmdrw"); 239 240 id_entry = drm_find_description(dev->pci_vendor, 241 dev->pci_device, idlist); 242 dev->id_entry = id_entry; 243 244 return drm_load(dev); 245 } 246 247 int drm_detach(device_t kdev) 248 { 249 struct drm_device *dev; 250 251 dev = device_get_softc(kdev); 252 253 drm_unload(dev); 254 255 if (dev->irqr) { 256 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, 257 dev->irqr); 258 259 #if 0 260 if (dev->msi_enabled) { 261 pci_release_msi(dev->device); 262 DRM_INFO("MSI released\n"); 263 } 264 #endif 265 } 266 267 return 0; 268 } 269 270 #ifndef DRM_DEV_NAME 271 #define DRM_DEV_NAME "drm" 272 #endif 273 274 devclass_t drm_devclass; 275 276 drm_pci_id_list_t *drm_find_description(int vendor, int device, 277 drm_pci_id_list_t *idlist) 278 { 279 int i = 0; 280 281 for (i = 0; idlist[i].vendor != 0; i++) { 282 if ((idlist[i].vendor == vendor) && 283 ((idlist[i].device == device) || 284 (idlist[i].device == 0))) { 285 return &idlist[i]; 286 } 287 } 288 return NULL; 289 } 290 291 static int drm_firstopen(struct drm_device *dev) 292 { 293 drm_local_map_t *map; 294 int i; 295 296 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 297 298 /* prebuild the SAREA */ 299 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, 300 _DRM_CONTAINS_LOCK, &map); 301 if (i != 0) 302 return i; 303 304 if (dev->driver->firstopen) 305 dev->driver->firstopen(dev); 306 307 dev->buf_use = 0; 308 309 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { 310 i = drm_dma_setup(dev); 311 if (i != 0) 312 return i; 313 } 314 315 for (i = 0; i < DRM_HASH_SIZE; i++) { 316 dev->magiclist[i].head = NULL; 317 dev->magiclist[i].tail = NULL; 318 } 319 320 dev->lock.lock_queue = 0; 321 dev->irq_enabled = 0; 322 dev->context_flag = 0; 323 dev->last_context = 0; 324 dev->if_version = 0; 325 326 dev->buf_sigio = NULL; 327 328 DRM_DEBUG("\n"); 329 330 return 0; 331 } 332 333 static int drm_lastclose(struct drm_device *dev) 334 { 335 drm_magic_entry_t *pt, *next; 336 drm_local_map_t *map, *mapsave; 337 int i; 338 339 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 340 341 DRM_DEBUG("\n"); 342 343 if (dev->driver->lastclose != NULL) 344 dev->driver->lastclose(dev); 345 346 if (dev->irq_enabled) 347 drm_irq_uninstall(dev); 348 349 if (dev->unique) { 350 free(dev->unique, DRM_MEM_DRIVER); 351 dev->unique = NULL; 352 dev->unique_len = 0; 353 } 354 /* Clear pid list */ 355 for (i = 0; i < DRM_HASH_SIZE; i++) { 356 for (pt = dev->magiclist[i].head; pt; pt = next) { 357 next = pt->next; 358 free(pt, DRM_MEM_MAGIC); 359 } 360 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 361 } 362 363 DRM_UNLOCK(); 364 drm_drawable_free_all(dev); 365 DRM_LOCK(); 366 367 /* Clear AGP information */ 368 if (dev->agp) { 369 drm_agp_mem_t *entry; 370 drm_agp_mem_t *nexte; 371 372 /* Remove AGP resources, but leave dev->agp intact until 373 * drm_unload is called. 374 */ 375 for (entry = dev->agp->memory; entry; entry = nexte) { 376 nexte = entry->next; 377 if (entry->bound) 378 drm_agp_unbind_memory(entry->handle); 379 drm_agp_free_memory(entry->handle); 380 free(entry, DRM_MEM_AGPLISTS); 381 } 382 dev->agp->memory = NULL; 383 384 if (dev->agp->acquired) 385 drm_agp_release(dev); 386 387 dev->agp->acquired = 0; 388 dev->agp->enabled = 0; 389 } 390 if (dev->sg != NULL) { 391 drm_sg_cleanup(dev->sg); 392 dev->sg = NULL; 393 } 394 395 TAILQ_FOREACH_MUTABLE(map, &dev->maplist, link, mapsave) { 396 if (!(map->flags & _DRM_DRIVER)) 397 drm_rmmap(dev, map); 398 } 399 400 drm_dma_takedown(dev); 401 if (dev->lock.hw_lock) { 402 dev->lock.hw_lock = NULL; /* SHM removed */ 403 dev->lock.file_priv = NULL; 404 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 405 } 406 407 return 0; 408 } 409 410 static int drm_load(struct drm_device *dev) 411 { 412 int i, retcode; 413 414 DRM_DEBUG("\n"); 415 416 TAILQ_INIT(&dev->maplist); 417 418 drm_mem_init(); 419 drm_sysctl_init(dev); 420 TAILQ_INIT(&dev->files); 421 422 dev->counters = 6; 423 dev->types[0] = _DRM_STAT_LOCK; 424 dev->types[1] = _DRM_STAT_OPENS; 425 dev->types[2] = _DRM_STAT_CLOSES; 426 dev->types[3] = _DRM_STAT_IOCTLS; 427 dev->types[4] = _DRM_STAT_LOCKS; 428 dev->types[5] = _DRM_STAT_UNLOCKS; 429 430 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 431 atomic_set(&dev->counts[i], 0); 432 433 if (dev->driver->load != NULL) { 434 DRM_LOCK(); 435 /* Shared code returns -errno. */ 436 retcode = -dev->driver->load(dev, 437 dev->id_entry->driver_private); 438 pci_enable_busmaster(dev->device); 439 DRM_UNLOCK(); 440 if (retcode != 0) 441 goto error; 442 } 443 444 if (drm_core_has_AGP(dev)) { 445 if (drm_device_is_agp(dev)) 446 dev->agp = drm_agp_init(); 447 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 448 dev->agp == NULL) { 449 DRM_ERROR("Card isn't AGP, or couldn't initialize " 450 "AGP.\n"); 451 retcode = ENOMEM; 452 goto error; 453 } 454 if (dev->agp != NULL) { 455 if (drm_mtrr_add(dev->agp->info.ai_aperture_base, 456 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0) 457 dev->agp->mtrr = 1; 458 } 459 } 460 461 retcode = drm_ctxbitmap_init(dev); 462 if (retcode != 0) { 463 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 464 goto error; 465 } 466 467 DRM_INFO("Initialized %s %d.%d.%d %s\n", 468 dev->driver->name, 469 dev->driver->major, 470 dev->driver->minor, 471 dev->driver->patchlevel, 472 dev->driver->date); 473 474 return 0; 475 476 error: 477 drm_sysctl_cleanup(dev); 478 DRM_LOCK(); 479 drm_lastclose(dev); 480 DRM_UNLOCK(); 481 destroy_dev(dev->devnode); 482 483 DRM_SPINUNINIT(&dev->drw_lock); 484 DRM_SPINUNINIT(&dev->vbl_lock); 485 DRM_SPINUNINIT(&dev->dev_lock); 486 487 return retcode; 488 } 489 490 static void drm_unload(struct drm_device *dev) 491 { 492 int i; 493 494 DRM_DEBUG("\n"); 495 496 drm_sysctl_cleanup(dev); 497 destroy_dev(dev->devnode); 498 499 drm_ctxbitmap_cleanup(dev); 500 501 if (dev->agp && dev->agp->mtrr) { 502 int __unused retcode; 503 504 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, 505 dev->agp->info.ai_aperture_size, DRM_MTRR_WC); 506 DRM_DEBUG("mtrr_del = %d", retcode); 507 } 508 509 drm_vblank_cleanup(dev); 510 511 DRM_LOCK(); 512 drm_lastclose(dev); 513 DRM_UNLOCK(); 514 515 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 516 * worried about resource consumption while the DRM is inactive (between 517 * lastclose and firstopen or unload) because these aren't actually 518 * taking up KVA, just keeping the PCI resource allocated. 519 */ 520 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 521 if (dev->pcir[i] == NULL) 522 continue; 523 bus_release_resource(dev->device, SYS_RES_MEMORY, 524 dev->pcirid[i], dev->pcir[i]); 525 dev->pcir[i] = NULL; 526 } 527 528 if (dev->agp) { 529 free(dev->agp, DRM_MEM_AGPLISTS); 530 dev->agp = NULL; 531 } 532 533 if (dev->driver->unload != NULL) { 534 DRM_LOCK(); 535 dev->driver->unload(dev); 536 DRM_UNLOCK(); 537 } 538 539 drm_mem_uninit(); 540 541 pci_disable_busmaster(dev->device); 542 543 DRM_SPINUNINIT(&dev->drw_lock); 544 DRM_SPINUNINIT(&dev->vbl_lock); 545 DRM_SPINUNINIT(&dev->dev_lock); 546 } 547 548 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 549 { 550 struct drm_version *version = data; 551 int len; 552 553 #define DRM_COPY( name, value ) \ 554 len = strlen( value ); \ 555 if ( len > name##_len ) len = name##_len; \ 556 name##_len = strlen( value ); \ 557 if ( len && name ) { \ 558 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 559 return EFAULT; \ 560 } 561 562 version->version_major = dev->driver->major; 563 version->version_minor = dev->driver->minor; 564 version->version_patchlevel = dev->driver->patchlevel; 565 566 DRM_COPY(version->name, dev->driver->name); 567 DRM_COPY(version->date, dev->driver->date); 568 DRM_COPY(version->desc, dev->driver->desc); 569 570 return 0; 571 } 572 573 int drm_open(struct dev_open_args *ap) 574 { 575 struct cdev *kdev = ap->a_head.a_dev; 576 int flags = ap->a_oflags; 577 int fmt = 0; 578 struct thread *p = curthread; 579 struct drm_device *dev = NULL; 580 int retcode = 0; 581 582 dev = DRIVER_SOFTC(minor(kdev)); 583 584 DRM_DEBUG("open_count = %d\n", dev->open_count); 585 586 retcode = drm_open_helper(kdev, flags, fmt, p, dev); 587 588 if (!retcode) { 589 atomic_inc(&dev->counts[_DRM_STAT_OPENS]); 590 DRM_LOCK(); 591 device_busy(dev->device); 592 if (!dev->open_count++) 593 retcode = drm_firstopen(dev); 594 DRM_UNLOCK(); 595 } 596 597 return retcode; 598 } 599 600 int drm_close(struct dev_close_args *ap) 601 { 602 struct cdev *kdev = ap->a_head.a_dev; 603 struct drm_file *file_priv; 604 struct drm_device *dev; 605 int retcode = 0; 606 607 dev = DRIVER_SOFTC(minor(kdev)); 608 file_priv = drm_find_file_by_proc(dev, curthread); 609 610 DRM_DEBUG("open_count = %d\n", dev->open_count); 611 612 DRM_LOCK(); 613 614 if (--file_priv->refs != 0) 615 goto done; 616 617 if (dev->driver->preclose != NULL) 618 dev->driver->preclose(dev, file_priv); 619 620 /* ======================================================== 621 * Begin inline drm_release 622 */ 623 624 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 625 DRM_CURRENTPID, (long)dev->device, dev->open_count); 626 627 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 628 && dev->lock.file_priv == file_priv) { 629 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 630 DRM_CURRENTPID, 631 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 632 if (dev->driver->reclaim_buffers_locked != NULL) 633 dev->driver->reclaim_buffers_locked(dev, file_priv); 634 635 drm_lock_free(&dev->lock, 636 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 637 638 /* FIXME: may require heavy-handed reset of 639 hardware at this point, possibly 640 processed via a callback to the X 641 server. */ 642 } else if (dev->driver->reclaim_buffers_locked != NULL && 643 dev->lock.hw_lock != NULL) { 644 /* The lock is required to reclaim buffers */ 645 for (;;) { 646 if (!dev->lock.hw_lock) { 647 /* Device has been unregistered */ 648 retcode = EINTR; 649 break; 650 } 651 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 652 dev->lock.file_priv = file_priv; 653 dev->lock.lock_time = jiffies; 654 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 655 break; /* Got lock */ 656 } 657 /* Contention */ 658 tsleep_interlock((void *)&dev->lock.lock_queue, PCATCH); 659 DRM_UNLOCK(); 660 retcode = tsleep((void *)&dev->lock.lock_queue, 661 PCATCH | PINTERLOCKED, "drmlk2", 0); 662 DRM_LOCK(); 663 if (retcode) 664 break; 665 } 666 if (retcode == 0) { 667 dev->driver->reclaim_buffers_locked(dev, file_priv); 668 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 669 } 670 } 671 672 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 673 !dev->driver->reclaim_buffers_locked) 674 drm_reclaim_buffers(dev, file_priv); 675 676 funsetown(dev->buf_sigio); 677 678 if (dev->driver->postclose != NULL) 679 dev->driver->postclose(dev, file_priv); 680 TAILQ_REMOVE(&dev->files, file_priv, link); 681 free(file_priv, DRM_MEM_FILES); 682 683 /* ======================================================== 684 * End inline drm_release 685 */ 686 done: 687 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 688 device_unbusy(dev->device); 689 if (--dev->open_count == 0) { 690 retcode = drm_lastclose(dev); 691 } 692 693 DRM_UNLOCK(); 694 695 return (0); 696 } 697 698 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 699 */ 700 int drm_ioctl(struct dev_ioctl_args *ap) 701 { 702 struct cdev *kdev = ap->a_head.a_dev; 703 u_long cmd = ap->a_cmd; 704 caddr_t data = ap->a_data; 705 struct thread *p = curthread; 706 struct drm_device *dev = drm_get_device_from_kdev(kdev); 707 int retcode = 0; 708 drm_ioctl_desc_t *ioctl; 709 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 710 int nr = DRM_IOCTL_NR(cmd); 711 int is_driver_ioctl = 0; 712 struct drm_file *file_priv; 713 714 file_priv = drm_find_file_by_proc(dev, p); 715 if (!file_priv) { 716 DRM_ERROR("can't find authenticator\n"); 717 return EINVAL; 718 } 719 720 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 721 ++file_priv->ioctl_count; 722 723 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 724 DRM_CURRENTPID, cmd, nr, (long)dev->device, 725 file_priv->authenticated); 726 727 switch (cmd) { 728 case FIONBIO: 729 case FIOASYNC: 730 return 0; 731 732 case FIOSETOWN: 733 return fsetown(*(int *)data, &dev->buf_sigio); 734 735 case FIOGETOWN: 736 *(int *) data = fgetown(dev->buf_sigio); 737 return 0; 738 } 739 740 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 741 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 742 return EINVAL; 743 } 744 745 ioctl = &drm_ioctls[nr]; 746 /* It's not a core DRM ioctl, try driver-specific. */ 747 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 748 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 749 nr -= DRM_COMMAND_BASE; 750 if (nr > dev->driver->max_ioctl) { 751 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 752 nr, dev->driver->max_ioctl); 753 return EINVAL; 754 } 755 ioctl = &dev->driver->ioctls[nr]; 756 is_driver_ioctl = 1; 757 } 758 func = ioctl->func; 759 760 if (func == NULL) { 761 DRM_DEBUG("no function\n"); 762 return EINVAL; 763 } 764 765 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 766 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 767 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 768 return EACCES; 769 770 if (is_driver_ioctl) { 771 DRM_LOCK(); 772 /* shared code returns -errno */ 773 retcode = -func(dev, data, file_priv); 774 DRM_UNLOCK(); 775 } else { 776 retcode = func(dev, data, file_priv); 777 } 778 779 if (retcode != 0) 780 DRM_DEBUG(" returning %d\n", retcode); 781 782 return retcode; 783 } 784 785 drm_local_map_t *drm_getsarea(struct drm_device *dev) 786 { 787 drm_local_map_t *map; 788 789 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 790 TAILQ_FOREACH(map, &dev->maplist, link) { 791 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK)) 792 return map; 793 } 794 795 return NULL; 796 } 797 798 #if DRM_LINUX 799 800 #include <sys/sysproto.h> 801 802 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 803 804 #define LINUX_IOCTL_DRM_MIN 0x6400 805 #define LINUX_IOCTL_DRM_MAX 0x64ff 806 807 static linux_ioctl_function_t drm_linux_ioctl; 808 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 809 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 810 811 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 812 linux_ioctl_register_handler, &drm_handler); 813 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 814 linux_ioctl_unregister_handler, &drm_handler); 815 816 /* The bits for in/out are switched on Linux */ 817 #define LINUX_IOC_IN IOC_OUT 818 #define LINUX_IOC_OUT IOC_IN 819 820 static int 821 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 822 { 823 int error; 824 int cmd = args->cmd; 825 826 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 827 if (cmd & LINUX_IOC_IN) 828 args->cmd |= IOC_IN; 829 if (cmd & LINUX_IOC_OUT) 830 args->cmd |= IOC_OUT; 831 832 error = ioctl(p, (struct ioctl_args *)args); 833 834 return error; 835 } 836 #endif /* DRM_LINUX */ 837