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#include <sys/cdefs.h> 32__FBSDID("$FreeBSD$"); 33 34/** @file drm_drv.c 35 * The catch-all file for DRM device support, including module setup/teardown, 36 * open/close, and ioctl dispatch. 37 */ 38 39 40#include <sys/limits.h> 41#include "dev/drm/drmP.h" 42#include "dev/drm/drm.h" 43#include "dev/drm/drm_sarea.h" 44 45#ifdef DRM_DEBUG_DEFAULT_ON 46int drm_debug_flag = 1; 47#else 48int drm_debug_flag = 0; 49#endif 50 51static int drm_load(struct drm_device *dev); 52static void drm_unload(struct drm_device *dev); 53static drm_pci_id_list_t *drm_find_description(int vendor, int device, 54 drm_pci_id_list_t *idlist); 55 56MODULE_VERSION(drm, 1); 57MODULE_DEPEND(drm, agp, 1, 1, 1); 58MODULE_DEPEND(drm, pci, 1, 1, 1); 59MODULE_DEPEND(drm, mem, 1, 1, 1); 60 61static drm_ioctl_desc_t drm_ioctls[256] = { 62 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), 63 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), 64 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), 65 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), 66 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), 67 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), 68 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), 69 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), 70 71 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 72 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 73 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 74 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 75 76 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 77 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), 78 79 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 80 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), 81 82 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), 83 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 84 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 85 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), 86 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 87 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 88 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), 89 90 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 91 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 92 93 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), 94 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), 95 96 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), 97 98 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 99 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 100 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), 101 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), 102 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), 103 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), 104 105 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 106 107 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 108 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 109 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 110 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), 111 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 112 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 113 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 114 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 115 116 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 117 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 118 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0), 119 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), 120 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 121}; 122 123static struct cdevsw drm_cdevsw = { 124 .d_version = D_VERSION, 125 .d_open = drm_open, 126 .d_read = drm_read, 127 .d_ioctl = drm_ioctl, 128 .d_poll = drm_poll, 129 .d_mmap = drm_mmap, 130 .d_name = "drm", 131 .d_flags = D_TRACKCLOSE 132}; 133 134static int drm_msi = 1; /* Enable by default. */ 135SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); 136SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1, 137 "Enable MSI interrupts for drm devices"); 138 139static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { 140 {0x8086, 0x2772}, /* Intel i945G */ \ 141 {0x8086, 0x27A2}, /* Intel i945GM */ \ 142 {0x8086, 0x27AE}, /* Intel i945GME */ \ 143 {0, 0} 144}; 145 146static int drm_msi_is_blacklisted(int vendor, int device) 147{ 148 int i = 0; 149 150 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { 151 if ((drm_msi_blacklist[i].vendor == vendor) && 152 (drm_msi_blacklist[i].device == device)) { 153 return 1; 154 } 155 } 156 157 return 0; 158} 159 160int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) 161{ 162 drm_pci_id_list_t *id_entry; 163 int vendor, device; 164 vendor = pci_get_vendor(kdev); 165 device = pci_get_device(kdev); 166 167 if (pci_get_class(kdev) != PCIC_DISPLAY 168 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA) 169 return ENXIO; 170 171 id_entry = drm_find_description(vendor, device, idlist); 172 if (id_entry != NULL) { 173 if (!device_get_desc(kdev)) { 174 DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 175 device_set_desc(kdev, id_entry->name); 176 } 177 return 0; 178 } 179 180 return ENXIO; 181} 182 183int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 184{ 185 struct drm_device *dev; 186 drm_pci_id_list_t *id_entry; 187 int unit, msicount; 188 189 unit = device_get_unit(kdev); 190 dev = device_get_softc(kdev); 191 192 dev->device = kdev; 193 dev->devnode = make_dev(&drm_cdevsw, 194 0, 195 DRM_DEV_UID, 196 DRM_DEV_GID, 197 DRM_DEV_MODE, 198 "dri/card%d", unit); 199 dev->devnode->si_drv1 = dev; 200 201 dev->pci_domain = pci_get_domain(dev->device); 202 dev->pci_bus = pci_get_bus(dev->device); 203 dev->pci_slot = pci_get_slot(dev->device); 204 dev->pci_func = pci_get_function(dev->device); 205 206 dev->pci_vendor = pci_get_vendor(dev->device); 207 dev->pci_device = pci_get_device(dev->device); 208 209 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { 210 if (drm_msi && 211 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) { 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 } 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 mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF); 235 mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF); 236 mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF); 237 mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF); 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 246int 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 (dev->msi_enabled) { 259 pci_release_msi(dev->device); 260 DRM_INFO("MSI released\n"); 261 } 262 } 263 264 return 0; 265} 266 267#ifndef DRM_DEV_NAME 268#define DRM_DEV_NAME "drm" 269#endif 270 271devclass_t drm_devclass; 272 273drm_pci_id_list_t *drm_find_description(int vendor, int device, 274 drm_pci_id_list_t *idlist) 275{ 276 int i = 0; 277 278 for (i = 0; idlist[i].vendor != 0; i++) { 279 if ((idlist[i].vendor == vendor) && 280 ((idlist[i].device == device) || 281 (idlist[i].device == 0))) { 282 return &idlist[i]; 283 } 284 } 285 return NULL; 286} 287 288static int drm_firstopen(struct drm_device *dev) 289{ 290 drm_local_map_t *map; 291 int i; 292 293 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 294 295 /* prebuild the SAREA */ 296 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, 297 _DRM_CONTAINS_LOCK, &map); 298 if (i != 0) 299 return i; 300 301 if (dev->driver->firstopen) 302 dev->driver->firstopen(dev); 303 304 dev->buf_use = 0; 305 306 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { 307 i = drm_dma_setup(dev); 308 if (i != 0) 309 return i; 310 } 311 312 for (i = 0; i < DRM_HASH_SIZE; i++) { 313 dev->magiclist[i].head = NULL; 314 dev->magiclist[i].tail = NULL; 315 } 316 317 dev->lock.lock_queue = 0; 318 dev->irq_enabled = 0; 319 dev->context_flag = 0; 320 dev->last_context = 0; 321 dev->if_version = 0; 322 323 dev->buf_sigio = NULL; 324 325 DRM_DEBUG("\n"); 326 327 return 0; 328} 329 330static int drm_lastclose(struct drm_device *dev) 331{ 332 drm_magic_entry_t *pt, *next; 333 drm_local_map_t *map, *mapsave; 334 int i; 335 336 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 337 338 DRM_DEBUG("\n"); 339 340 if (dev->driver->lastclose != NULL) 341 dev->driver->lastclose(dev); 342 343 if (dev->irq_enabled) 344 drm_irq_uninstall(dev); 345 346 if (dev->unique) { 347 free(dev->unique, DRM_MEM_DRIVER); 348 dev->unique = NULL; 349 dev->unique_len = 0; 350 } 351 /* Clear pid list */ 352 for (i = 0; i < DRM_HASH_SIZE; i++) { 353 for (pt = dev->magiclist[i].head; pt; pt = next) { 354 next = pt->next; 355 free(pt, DRM_MEM_MAGIC); 356 } 357 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 358 } 359 360 DRM_UNLOCK(); 361 drm_drawable_free_all(dev); 362 DRM_LOCK(); 363 364 /* Clear AGP information */ 365 if (dev->agp) { 366 drm_agp_mem_t *entry; 367 drm_agp_mem_t *nexte; 368 369 /* Remove AGP resources, but leave dev->agp intact until 370 * drm_unload is called. 371 */ 372 for (entry = dev->agp->memory; entry; entry = nexte) { 373 nexte = entry->next; 374 if (entry->bound) 375 drm_agp_unbind_memory(entry->handle); 376 drm_agp_free_memory(entry->handle); 377 free(entry, DRM_MEM_AGPLISTS); 378 } 379 dev->agp->memory = NULL; 380 381 if (dev->agp->acquired) 382 drm_agp_release(dev); 383 384 dev->agp->acquired = 0; 385 dev->agp->enabled = 0; 386 } 387 if (dev->sg != NULL) { 388 drm_sg_cleanup(dev->sg); 389 dev->sg = NULL; 390 } 391 392 TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) { 393 if (!(map->flags & _DRM_DRIVER)) 394 drm_rmmap(dev, map); 395 } 396 397 drm_dma_takedown(dev); 398 if (dev->lock.hw_lock) { 399 dev->lock.hw_lock = NULL; /* SHM removed */ 400 dev->lock.file_priv = NULL; 401 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 402 } 403 404 return 0; 405} 406 407static int drm_load(struct drm_device *dev) 408{ 409 int i, retcode; 410 411 DRM_DEBUG("\n"); 412 413 TAILQ_INIT(&dev->maplist); 414 dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL); 415 if (dev->map_unrhdr == NULL) { 416 DRM_ERROR("Couldn't allocate map number allocator\n"); 417 return EINVAL; 418 } 419 420 421 drm_mem_init(); 422 drm_sysctl_init(dev); 423 TAILQ_INIT(&dev->files); 424 425 dev->counters = 6; 426 dev->types[0] = _DRM_STAT_LOCK; 427 dev->types[1] = _DRM_STAT_OPENS; 428 dev->types[2] = _DRM_STAT_CLOSES; 429 dev->types[3] = _DRM_STAT_IOCTLS; 430 dev->types[4] = _DRM_STAT_LOCKS; 431 dev->types[5] = _DRM_STAT_UNLOCKS; 432 433 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 434 atomic_set(&dev->counts[i], 0); 435 436 if (dev->driver->load != NULL) { 437 DRM_LOCK(); 438 /* Shared code returns -errno. */ 439 retcode = -dev->driver->load(dev, 440 dev->id_entry->driver_private); 441 if (pci_enable_busmaster(dev->device)) 442 DRM_ERROR("Request to enable bus-master failed.\n"); 443 DRM_UNLOCK(); 444 if (retcode != 0) 445 goto error; 446 } 447 448 if (drm_core_has_AGP(dev)) { 449 if (drm_device_is_agp(dev)) 450 dev->agp = drm_agp_init(); 451 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 452 dev->agp == NULL) { 453 DRM_ERROR("Card isn't AGP, or couldn't initialize " 454 "AGP.\n"); 455 retcode = ENOMEM; 456 goto error; 457 } 458 if (dev->agp != NULL && dev->agp->info.ai_aperture_base != 0) { 459 if (drm_mtrr_add(dev->agp->info.ai_aperture_base, 460 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0) 461 dev->agp->mtrr = 1; 462 } 463 } 464 465 retcode = drm_ctxbitmap_init(dev); 466 if (retcode != 0) { 467 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 468 goto error; 469 } 470 471 dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL); 472 if (dev->drw_unrhdr == NULL) { 473 DRM_ERROR("Couldn't allocate drawable number allocator\n"); 474 goto error; 475 } 476 477 DRM_INFO("Initialized %s %d.%d.%d %s\n", 478 dev->driver->name, 479 dev->driver->major, 480 dev->driver->minor, 481 dev->driver->patchlevel, 482 dev->driver->date); 483 484 return 0; 485 486error: 487 drm_sysctl_cleanup(dev); 488 DRM_LOCK(); 489 drm_lastclose(dev); 490 DRM_UNLOCK(); 491 destroy_dev(dev->devnode); 492 493 mtx_destroy(&dev->drw_lock); 494 mtx_destroy(&dev->vbl_lock); 495 mtx_destroy(&dev->irq_lock); 496 mtx_destroy(&dev->dev_lock); 497 498 return retcode; 499} 500 501static void drm_unload(struct drm_device *dev) 502{ 503 int i; 504 505 DRM_DEBUG("\n"); 506 507 drm_sysctl_cleanup(dev); 508 destroy_dev(dev->devnode); 509 510 drm_ctxbitmap_cleanup(dev); 511 512 if (dev->agp && dev->agp->mtrr) { 513 int __unused retcode; 514 515 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, 516 dev->agp->info.ai_aperture_size, DRM_MTRR_WC); 517 DRM_DEBUG("mtrr_del = %d", retcode); 518 } 519 520 drm_vblank_cleanup(dev); 521 522 DRM_LOCK(); 523 drm_lastclose(dev); 524 DRM_UNLOCK(); 525 526 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 527 * worried about resource consumption while the DRM is inactive (between 528 * lastclose and firstopen or unload) because these aren't actually 529 * taking up KVA, just keeping the PCI resource allocated. 530 */ 531 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 532 if (dev->pcir[i] == NULL) 533 continue; 534 bus_release_resource(dev->device, SYS_RES_MEMORY, 535 dev->pcirid[i], dev->pcir[i]); 536 dev->pcir[i] = NULL; 537 } 538 539 if (dev->agp) { 540 free(dev->agp, DRM_MEM_AGPLISTS); 541 dev->agp = NULL; 542 } 543 544 if (dev->driver->unload != NULL) { 545 DRM_LOCK(); 546 dev->driver->unload(dev); 547 DRM_UNLOCK(); 548 } 549 550 delete_unrhdr(dev->drw_unrhdr); 551 delete_unrhdr(dev->map_unrhdr); 552 553 drm_mem_uninit(); 554 555 if (pci_disable_busmaster(dev->device)) 556 DRM_ERROR("Request to disable bus-master failed.\n"); 557 558 mtx_destroy(&dev->drw_lock); 559 mtx_destroy(&dev->vbl_lock); 560 mtx_destroy(&dev->irq_lock); 561 mtx_destroy(&dev->dev_lock); 562} 563 564int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 565{ 566 struct drm_version *version = data; 567 int len; 568 569#define DRM_COPY( name, value ) \ 570 len = strlen( value ); \ 571 if ( len > name##_len ) len = name##_len; \ 572 name##_len = strlen( value ); \ 573 if ( len && name ) { \ 574 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 575 return EFAULT; \ 576 } 577 578 version->version_major = dev->driver->major; 579 version->version_minor = dev->driver->minor; 580 version->version_patchlevel = dev->driver->patchlevel; 581 582 DRM_COPY(version->name, dev->driver->name); 583 DRM_COPY(version->date, dev->driver->date); 584 DRM_COPY(version->desc, dev->driver->desc); 585 586 return 0; 587} 588 589int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p) 590{ 591 struct drm_device *dev = NULL; 592 int retcode = 0; 593 594 dev = kdev->si_drv1; 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 612void drm_close(void *data) 613{ 614 struct drm_file *file_priv = data; 615 struct drm_device *dev = file_priv->dev; 616 int retcode = 0; 617 618 DRM_DEBUG("open_count = %d\n", dev->open_count); 619 620 DRM_LOCK(); 621 622 if (dev->driver->preclose != NULL) 623 dev->driver->preclose(dev, file_priv); 624 625 /* ======================================================== 626 * Begin inline drm_release 627 */ 628 629 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 630 DRM_CURRENTPID, (long)dev->device, dev->open_count); 631 632 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 633 && dev->lock.file_priv == file_priv) { 634 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 635 DRM_CURRENTPID, 636 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 637 if (dev->driver->reclaim_buffers_locked != NULL) 638 dev->driver->reclaim_buffers_locked(dev, file_priv); 639 640 drm_lock_free(&dev->lock, 641 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 642 643 /* FIXME: may require heavy-handed reset of 644 hardware at this point, possibly 645 processed via a callback to the X 646 server. */ 647 } else if (dev->driver->reclaim_buffers_locked != NULL && 648 dev->lock.hw_lock != NULL) { 649 /* The lock is required to reclaim buffers */ 650 for (;;) { 651 if (!dev->lock.hw_lock) { 652 /* Device has been unregistered */ 653 retcode = EINTR; 654 break; 655 } 656 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 657 dev->lock.file_priv = file_priv; 658 dev->lock.lock_time = jiffies; 659 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 660 break; /* Got lock */ 661 } 662 /* Contention */ 663 retcode = mtx_sleep((void *)&dev->lock.lock_queue, 664 &dev->dev_lock, PCATCH, "drmlk2", 0); 665 if (retcode) 666 break; 667 } 668 if (retcode == 0) { 669 dev->driver->reclaim_buffers_locked(dev, file_priv); 670 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 671 } 672 } 673 674 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 675 !dev->driver->reclaim_buffers_locked) 676 drm_reclaim_buffers(dev, file_priv); 677 678 funsetown(&dev->buf_sigio); 679 680 if (dev->driver->postclose != NULL) 681 dev->driver->postclose(dev, file_priv); 682 TAILQ_REMOVE(&dev->files, file_priv, link); 683 free(file_priv, DRM_MEM_FILES); 684 685 /* ======================================================== 686 * End inline drm_release 687 */ 688 689 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 690 device_unbusy(dev->device); 691 if (--dev->open_count == 0) { 692 retcode = drm_lastclose(dev); 693 } 694 695 DRM_UNLOCK(); 696} 697 698/* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 699 */ 700int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags, 701 DRM_STRUCTPROC *p) 702{ 703 struct drm_device *dev = drm_get_device_from_kdev(kdev); 704 int retcode = 0; 705 drm_ioctl_desc_t *ioctl; 706 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 707 int nr = DRM_IOCTL_NR(cmd); 708 int is_driver_ioctl = 0; 709 struct drm_file *file_priv; 710 711 retcode = devfs_get_cdevpriv((void **)&file_priv); 712 if (retcode != 0) { 713 DRM_ERROR("can't find authenticator\n"); 714 return EINVAL; 715 } 716 717 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 718 ++file_priv->ioctl_count; 719 720 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 721 DRM_CURRENTPID, cmd, nr, (long)dev->device, 722 file_priv->authenticated); 723 724 switch (cmd) { 725 case FIONBIO: 726 case FIOASYNC: 727 return 0; 728 729 case FIOSETOWN: 730 return fsetown(*(int *)data, &dev->buf_sigio); 731 732 case FIOGETOWN: 733 *(int *) data = fgetown(&dev->buf_sigio); 734 return 0; 735 } 736 737 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 738 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 739 return EINVAL; 740 } 741 742 ioctl = &drm_ioctls[nr]; 743 /* It's not a core DRM ioctl, try driver-specific. */ 744 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 745 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 746 nr -= DRM_COMMAND_BASE; 747 if (nr > dev->driver->max_ioctl) { 748 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 749 nr, dev->driver->max_ioctl); 750 return EINVAL; 751 } 752 ioctl = &dev->driver->ioctls[nr]; 753 is_driver_ioctl = 1; 754 } 755 func = ioctl->func; 756 757 if (func == NULL) { 758 DRM_DEBUG("no function\n"); 759 return EINVAL; 760 } 761 762 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 763 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 764 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 765 return EACCES; 766 767 if (is_driver_ioctl) { 768 DRM_LOCK(); 769 /* shared code returns -errno */ 770 retcode = -func(dev, data, file_priv); 771 DRM_UNLOCK(); 772 } else { 773 retcode = func(dev, data, file_priv); 774 } 775 776 if (retcode != 0) 777 DRM_DEBUG(" returning %d\n", retcode); 778 779 return retcode; 780} 781 782drm_local_map_t *drm_getsarea(struct drm_device *dev) 783{ 784 drm_local_map_t *map; 785 786 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 787 TAILQ_FOREACH(map, &dev->maplist, link) { 788 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK)) 789 return map; 790 } 791 792 return NULL; 793} 794 795#if DRM_LINUX 796 797#include <sys/sysproto.h> 798 799MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 800 801#define LINUX_IOCTL_DRM_MIN 0x6400 802#define LINUX_IOCTL_DRM_MAX 0x64ff 803 804static linux_ioctl_function_t drm_linux_ioctl; 805static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 806 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 807 808SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 809 linux_ioctl_register_handler, &drm_handler); 810SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 811 linux_ioctl_unregister_handler, &drm_handler); 812 813/* The bits for in/out are switched on Linux */ 814#define LINUX_IOC_IN IOC_OUT 815#define LINUX_IOC_OUT IOC_IN 816 817static int 818drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 819{ 820 int error; 821 int cmd = args->cmd; 822 823 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 824 if (cmd & LINUX_IOC_IN) 825 args->cmd |= IOC_IN; 826 if (cmd & LINUX_IOC_OUT) 827 args->cmd |= IOC_OUT; 828 829 error = ioctl(p, (struct ioctl_args *)args); 830 831 return error; 832} 833#endif /* DRM_LINUX */ 834