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 * $DragonFly: src/sys/dev/drm/drm_drv.c,v 1.1 2008/04/05 18:12:29 hasso Exp $ 30 */ 31 32 /** @file drm_drv.c 33 * The catch-all file for DRM device support, including module setup/teardown, 34 * open/close, and ioctl dispatch. 35 */ 36 37 #ifdef __DragonFly__ 38 #include <machine/limits.h> 39 #else 40 #include <sys/limits.h> 41 #endif 42 #include "drmP.h" 43 #include "drm.h" 44 #include "drm_sarea.h" 45 46 #ifdef DRM_DEBUG_DEFAULT_ON 47 int drm_debug_flag = 1; 48 #else 49 int drm_debug_flag = 0; 50 #endif 51 52 static int drm_load(drm_device_t *dev); 53 static void drm_unload(drm_device_t *dev); 54 static drm_pci_id_list_t *drm_find_description(int vendor, int device, 55 drm_pci_id_list_t *idlist); 56 57 #if defined(__FreeBSD__) || defined(__DragonFly__) 58 #define DRIVER_SOFTC(unit) \ 59 ((drm_device_t *)devclass_get_softc(drm_devclass, unit)) 60 61 MODULE_VERSION(drm, 1); 62 MODULE_DEPEND(drm, agp, 1, 1, 1); 63 MODULE_DEPEND(drm, pci, 1, 1, 1); 64 #if __FreeBSD_version > 502127 65 MODULE_DEPEND(drm, mem, 1, 1, 1); 66 #endif 67 #endif /* __FreeBSD__ || __DragonFly__ */ 68 69 #if defined(__NetBSD__) || defined(__OpenBSD__) 70 #define DRIVER_SOFTC(unit) \ 71 ((drm_device_t *)device_lookup(&drm_cd, unit)) 72 #endif /* __NetBSD__ || __OpenBSD__ */ 73 74 static drm_ioctl_desc_t drm_ioctls[256] = { 75 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), 76 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), 77 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), 78 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), 79 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), 80 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), 81 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), 82 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), 83 84 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 85 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 86 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 87 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 88 89 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 90 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), 91 92 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 93 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), 94 95 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 96 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 97 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 98 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), 99 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 100 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 101 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), 102 103 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 104 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 105 106 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), 107 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), 108 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), 109 110 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 111 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER), 112 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), 113 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), 114 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), 115 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), 116 117 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 118 119 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 120 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 121 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 122 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), 123 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 124 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 125 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 126 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 127 128 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 129 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 130 131 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0), 132 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 133 }; 134 135 #if defined(__FreeBSD__) || defined(__DragonFly__) 136 #ifdef __FreeBSD__ 137 static struct cdevsw drm_cdevsw = { 138 #if __FreeBSD_version >= 502103 139 .d_version = D_VERSION, 140 #endif 141 .d_open = drm_open, 142 .d_close = drm_close, 143 .d_read = drm_read, 144 .d_ioctl = drm_ioctl, 145 .d_poll = drm_poll, 146 .d_mmap = drm_mmap, 147 .d_name = "drm", 148 #if __FreeBSD_version >= 502103 149 .d_flags = D_TRACKCLOSE | D_NEEDGIANT, 150 #else 151 .d_maj = 145, 152 .d_flags = D_TRACKCLOSE, 153 #endif 154 #if __FreeBSD_version < 500000 155 .d_bmaj = -1 156 #endif 157 }; 158 #else /* __FreeBSD__ */ 159 static struct dev_ops drm_cdevsw = { 160 { "drm", 145, D_TRACKCLOSE }, 161 .d_open = drm_open, 162 .d_close = drm_close, 163 .d_read = drm_read, 164 .d_ioctl = drm_ioctl, 165 .d_poll = drm_poll, 166 .d_mmap = drm_mmap 167 }; 168 #endif /* !__FreeBSD__ */ 169 170 int drm_probe(device_t dev, drm_pci_id_list_t *idlist) 171 { 172 drm_pci_id_list_t *id_entry; 173 int vendor, device; 174 #if __FreeBSD_version < 700010 175 device_t realdev; 176 177 if (!strcmp(device_get_name(dev), "drmsub")) 178 realdev = device_get_parent(dev); 179 else 180 realdev = dev; 181 vendor = pci_get_vendor(realdev); 182 device = pci_get_device(realdev); 183 #else 184 vendor = pci_get_vendor(dev); 185 device = pci_get_device(dev); 186 #endif 187 188 id_entry = drm_find_description(vendor, device, idlist); 189 if (id_entry != NULL) { 190 device_set_desc(dev, id_entry->name); 191 return 0; 192 } 193 194 return ENXIO; 195 } 196 197 int drm_attach(device_t nbdev, drm_pci_id_list_t *idlist) 198 { 199 drm_device_t *dev; 200 drm_pci_id_list_t *id_entry; 201 int unit; 202 203 unit = device_get_unit(nbdev); 204 dev = device_get_softc(nbdev); 205 206 #if __FreeBSD_version < 700010 207 if (!strcmp(device_get_name(nbdev), "drmsub")) 208 dev->device = device_get_parent(nbdev); 209 else 210 dev->device = nbdev; 211 #else 212 dev->device = nbdev; 213 #endif 214 #ifdef __DragonFly__ 215 dev_ops_add(&drm_cdevsw, -1, unit); 216 #endif 217 dev->devnode = make_dev(&drm_cdevsw, 218 unit, 219 DRM_DEV_UID, 220 DRM_DEV_GID, 221 DRM_DEV_MODE, 222 "dri/card%d", unit); 223 #if __FreeBSD_version >= 500000 224 mtx_init(&dev->dev_lock, "drm device", NULL, MTX_DEF); 225 mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF); 226 #elif defined(__DragonFly__) 227 DRM_SPININIT(&dev->dev_lock, "drm device"); 228 DRM_SPININIT(&dev->drw_lock, "drmdrw"); 229 #endif 230 231 id_entry = drm_find_description(pci_get_vendor(dev->device), 232 pci_get_device(dev->device), idlist); 233 dev->id_entry = id_entry; 234 235 return drm_load(dev); 236 } 237 238 int drm_detach(device_t dev) 239 { 240 drm_unload(device_get_softc(dev)); 241 return 0; 242 } 243 244 #ifndef DRM_DEV_NAME 245 #define DRM_DEV_NAME "drm" 246 #endif 247 248 devclass_t drm_devclass; 249 250 #elif defined(__NetBSD__) || defined(__OpenBSD__) 251 252 static struct cdevsw drm_cdevsw = { 253 drm_open, 254 drm_close, 255 drm_read, 256 nowrite, 257 drm_ioctl, 258 nostop, 259 notty, 260 drm_poll, 261 drm_mmap, 262 nokqfilter, 263 D_TTY 264 }; 265 266 int drm_refcnt = 0; 267 268 #if defined(__NetBSD__) && __NetBSD_Version__ >= 106080000 269 MOD_DEV("drm", DRIVER_NAME, NULL, -1, &drm_cdevsw, CDEV_MAJOR); 270 #else 271 MOD_DEV("drm", LM_DT_CHAR, CDEV_MAJOR, &drm_cdevsw); 272 #endif 273 274 int drm_lkmentry(struct lkm_table *lkmtp, int cmd, int ver); 275 static int drm_lkmhandle(struct lkm_table *lkmtp, int cmd); 276 277 int drm_modprobe(void); 278 int drm_probe(struct pci_attach_args *pa); 279 void drm_attach(struct pci_attach_args *pa, dev_t kdev); 280 281 int drm_lkmentry(struct lkm_table *lkmtp, int cmd, int ver) { 282 DISPATCH(lkmtp, cmd, ver, drm_lkmhandle, drm_lkmhandle, drm_lkmhandle); 283 } 284 285 static int drm_lkmhandle(struct lkm_table *lkmtp, int cmd) 286 { 287 int error = 0; 288 289 switch(cmd) { 290 case LKM_E_LOAD: 291 if (lkmexists(lkmtp)) 292 return EEXIST; 293 294 if(drm_modprobe()) 295 return 0; 296 297 return 1; 298 299 case LKM_E_UNLOAD: 300 if (drm_refcnt > 0) 301 return (EBUSY); 302 break; 303 case LKM_E_STAT: 304 break; 305 306 default: 307 error = EIO; 308 break; 309 } 310 311 return error; 312 } 313 314 int drm_modprobe(void) 315 { 316 struct pci_attach_args pa; 317 int error; 318 319 error = pci_find_device(&pa, drm_probe, idlist); 320 if (error != 0) 321 drm_attach(&pa, 0); 322 323 return error; 324 } 325 326 int drm_probe(struct pci_attach_args *pa, drm_pci_id_list_t idlist) 327 { 328 const char *desc; 329 drm_pci_id_list_t *id_entry; 330 331 id_entry = drm_find_description(PCI_VENDOR(pa->pa_id), 332 PCI_PRODUCT(pa->pa_id), idlist); 333 if (id_entry != NULL) { 334 return 1; 335 } 336 337 return 0; 338 } 339 340 void drm_attach(struct pci_attach_args *pa, dev_t kdev, 341 drm_pci_id_list_t *idlist) 342 { 343 int i; 344 drm_device_t *dev; 345 drm_pci_id_list_t *id_entry; 346 347 config_makeroom(kdev, &drm_cd); 348 drm_cd.cd_devs[(kdev)] = malloc(sizeof(drm_device_t), M_DRM, M_WAITOK); 349 dev = DRIVER_SOFTC(kdev); 350 351 memset(dev, 0, sizeof(drm_device_t)); 352 memcpy(&dev->pa, pa, sizeof(dev->pa)); 353 354 dev->irq = pa->pa_intrline; 355 dev->pci_domain = 0; 356 dev->pci_bus = pa->pa_bus; 357 dev->pci_slot = pa->pa_device; 358 dev->pci_func = pa->pa_function; 359 dev->dma_tag = pa->pa_dmat; 360 361 id_entry = drm_find_description(PCI_VENDOR(pa->pa_id), 362 PCI_PRODUCT(pa->pa_id), idlist); 363 dev->driver.pci_id_entry = id_entry; 364 365 DRM_INFO("%s", id_entry->name); 366 drm_load(dev); 367 } 368 369 int drm_detach(struct device *self, int flags) 370 { 371 drm_unload((drm_device_t *)self); 372 return 0; 373 } 374 375 int drm_activate(struct device *self, enum devact act) 376 { 377 switch (act) { 378 case DVACT_ACTIVATE: 379 return (EOPNOTSUPP); 380 break; 381 382 case DVACT_DEACTIVATE: 383 /* FIXME */ 384 break; 385 } 386 return (0); 387 } 388 #endif /* __NetBSD__ || __OpenBSD__ */ 389 390 drm_pci_id_list_t *drm_find_description(int vendor, int device, 391 drm_pci_id_list_t *idlist) 392 { 393 int i = 0; 394 395 for (i = 0; idlist[i].vendor != 0; i++) { 396 if ((idlist[i].vendor == vendor) && 397 (idlist[i].device == device)) { 398 return &idlist[i]; 399 } 400 } 401 return NULL; 402 } 403 404 static int drm_firstopen(drm_device_t *dev) 405 { 406 drm_local_map_t *map; 407 int i; 408 409 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 410 411 /* prebuild the SAREA */ 412 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, 413 _DRM_CONTAINS_LOCK, &map); 414 if (i != 0) 415 return i; 416 417 if (dev->driver.firstopen) 418 dev->driver.firstopen(dev); 419 420 dev->buf_use = 0; 421 422 if (dev->driver.use_dma) { 423 i = drm_dma_setup(dev); 424 if (i != 0) 425 return i; 426 } 427 428 for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) { 429 dev->magiclist[i].head = NULL; 430 dev->magiclist[i].tail = NULL; 431 } 432 433 dev->lock.lock_queue = 0; 434 dev->irq_enabled = 0; 435 dev->context_flag = 0; 436 dev->last_context = 0; 437 dev->if_version = 0; 438 439 #if defined(__FreeBSD__) || defined(__DragonFly__) 440 dev->buf_sigio = NULL; 441 #elif defined(__NetBSD__) || defined(__OpenBSD__) 442 dev->buf_pgid = 0; 443 #endif 444 445 DRM_DEBUG( "\n" ); 446 447 return 0; 448 } 449 450 static int drm_lastclose(drm_device_t *dev) 451 { 452 drm_magic_entry_t *pt, *next; 453 drm_local_map_t *map, *mapsave; 454 int i; 455 456 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 457 458 DRM_DEBUG( "\n" ); 459 460 if (dev->driver.lastclose != NULL) 461 dev->driver.lastclose(dev); 462 463 if (dev->irq_enabled) 464 drm_irq_uninstall(dev); 465 466 if ( dev->unique ) { 467 free(dev->unique, M_DRM); 468 dev->unique = NULL; 469 dev->unique_len = 0; 470 } 471 /* Clear pid list */ 472 for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) { 473 for ( pt = dev->magiclist[i].head ; pt ; pt = next ) { 474 next = pt->next; 475 free(pt, M_DRM); 476 } 477 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 478 } 479 480 /* Clear AGP information */ 481 if ( dev->agp ) { 482 drm_agp_mem_t *entry; 483 drm_agp_mem_t *nexte; 484 485 /* Remove AGP resources, but leave dev->agp intact until 486 * drm_unload is called. 487 */ 488 for ( entry = dev->agp->memory ; entry ; entry = nexte ) { 489 nexte = entry->next; 490 if ( entry->bound ) 491 drm_agp_unbind_memory(entry->handle); 492 drm_agp_free_memory(entry->handle); 493 free(entry, M_DRM); 494 } 495 dev->agp->memory = NULL; 496 497 if (dev->agp->acquired) 498 drm_agp_release(dev); 499 500 dev->agp->acquired = 0; 501 dev->agp->enabled = 0; 502 } 503 if (dev->sg != NULL) { 504 drm_sg_cleanup(dev->sg); 505 dev->sg = NULL; 506 } 507 508 TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) { 509 if (!(map->flags & _DRM_DRIVER)) 510 drm_rmmap(dev, map); 511 } 512 513 drm_dma_takedown(dev); 514 if ( dev->lock.hw_lock ) { 515 dev->lock.hw_lock = NULL; /* SHM removed */ 516 dev->lock.file_priv = NULL; 517 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 518 } 519 520 return 0; 521 } 522 523 static int drm_load(drm_device_t *dev) 524 { 525 int i, retcode; 526 527 DRM_DEBUG( "\n" ); 528 529 dev->irq = pci_get_irq(dev->device); 530 #if defined(__FreeBSD__) && __FreeBSD_version >= 700053 531 dev->pci_domain = pci_get_domain(dev->device); 532 #else 533 dev->pci_domain = 0; 534 #endif 535 dev->pci_bus = pci_get_bus(dev->device); 536 dev->pci_slot = pci_get_slot(dev->device); 537 dev->pci_func = pci_get_function(dev->device); 538 539 dev->pci_vendor = pci_get_vendor(dev->device); 540 dev->pci_device = pci_get_device(dev->device); 541 542 TAILQ_INIT(&dev->maplist); 543 544 drm_mem_init(); 545 #if defined(__FreeBSD__) || defined(__DragonFly__) 546 drm_sysctl_init(dev); 547 #endif 548 TAILQ_INIT(&dev->files); 549 550 dev->counters = 6; 551 dev->types[0] = _DRM_STAT_LOCK; 552 dev->types[1] = _DRM_STAT_OPENS; 553 dev->types[2] = _DRM_STAT_CLOSES; 554 dev->types[3] = _DRM_STAT_IOCTLS; 555 dev->types[4] = _DRM_STAT_LOCKS; 556 dev->types[5] = _DRM_STAT_UNLOCKS; 557 558 for ( i = 0 ; i < DRM_ARRAY_SIZE(dev->counts) ; i++ ) 559 atomic_set( &dev->counts[i], 0 ); 560 561 if (dev->driver.load != NULL) { 562 DRM_LOCK(); 563 /* Shared code returns -errno. */ 564 retcode = -dev->driver.load(dev, 565 dev->id_entry->driver_private); 566 DRM_UNLOCK(); 567 if (retcode != 0) 568 goto error; 569 } 570 571 if (dev->driver.use_agp) { 572 if (drm_device_is_agp(dev)) 573 dev->agp = drm_agp_init(); 574 if (dev->driver.require_agp && dev->agp == NULL) { 575 DRM_ERROR("Card isn't AGP, or couldn't initialize " 576 "AGP.\n"); 577 retcode = ENOMEM; 578 goto error; 579 } 580 if (dev->agp != NULL) { 581 if (drm_mtrr_add(dev->agp->info.ai_aperture_base, 582 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0) 583 dev->agp->mtrr = 1; 584 } 585 } 586 587 retcode = drm_ctxbitmap_init(dev); 588 if (retcode != 0) { 589 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 590 goto error; 591 } 592 593 #ifdef __FreeBSD__ 594 dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL); 595 if (dev->drw_unrhdr == NULL) { 596 DRM_ERROR("Couldn't allocate drawable number allocator\n"); 597 goto error; 598 } 599 #endif 600 601 DRM_INFO("Initialized %s %d.%d.%d %s\n", 602 dev->driver.name, 603 dev->driver.major, 604 dev->driver.minor, 605 dev->driver.patchlevel, 606 dev->driver.date); 607 608 return 0; 609 610 error: 611 #if defined(__FreeBSD__) || defined(__DragonFly__) 612 drm_sysctl_cleanup(dev); 613 #endif 614 DRM_LOCK(); 615 drm_lastclose(dev); 616 DRM_UNLOCK(); 617 #if defined(__FreeBSD__) || defined(__DragonFly__) 618 destroy_dev(dev->devnode); 619 #if __FreeBSD_version >= 500000 620 mtx_destroy(&dev->dev_lock); 621 #elif defined(__DragonFly__) 622 DRM_SPINUNINIT(&dev->dev_lock); 623 #endif 624 #endif 625 return retcode; 626 } 627 628 static void drm_unload(drm_device_t *dev) 629 { 630 int i; 631 632 DRM_DEBUG( "\n" ); 633 634 #if defined(__FreeBSD__) || defined(__DragonFly__) 635 drm_sysctl_cleanup(dev); 636 destroy_dev(dev->devnode); 637 #endif 638 639 drm_ctxbitmap_cleanup(dev); 640 641 if (dev->agp && dev->agp->mtrr) { 642 int __unused retcode; 643 644 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, 645 dev->agp->info.ai_aperture_size, DRM_MTRR_WC); 646 DRM_DEBUG("mtrr_del = %d", retcode); 647 } 648 649 DRM_LOCK(); 650 drm_lastclose(dev); 651 DRM_UNLOCK(); 652 653 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 654 * worried about resource consumption while the DRM is inactive (between 655 * lastclose and firstopen or unload) because these aren't actually 656 * taking up KVA, just keeping the PCI resource allocated. 657 */ 658 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 659 if (dev->pcir[i] == NULL) 660 continue; 661 bus_release_resource(dev->device, SYS_RES_MEMORY, 662 dev->pcirid[i], dev->pcir[i]); 663 dev->pcir[i] = NULL; 664 } 665 666 if ( dev->agp ) { 667 free(dev->agp, M_DRM); 668 dev->agp = NULL; 669 } 670 671 if (dev->driver.unload != NULL) 672 dev->driver.unload(dev); 673 674 #ifdef __FreeBSD__ 675 delete_unrhdr(dev->drw_unrhdr); 676 #endif 677 678 drm_mem_uninit(); 679 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 680 mtx_destroy(&dev->dev_lock); 681 #elif defined(__DragonFly__) 682 DRM_SPINUNINIT(&dev->dev_lock); 683 #endif 684 } 685 686 687 int drm_version(drm_device_t *dev, void *data, struct drm_file *file_priv) 688 { 689 drm_version_t *version = data; 690 int len; 691 692 #define DRM_COPY( name, value ) \ 693 len = strlen( value ); \ 694 if ( len > name##_len ) len = name##_len; \ 695 name##_len = strlen( value ); \ 696 if ( len && name ) { \ 697 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 698 return EFAULT; \ 699 } 700 701 version->version_major = dev->driver.major; 702 version->version_minor = dev->driver.minor; 703 version->version_patchlevel = dev->driver.patchlevel; 704 705 DRM_COPY(version->name, dev->driver.name); 706 DRM_COPY(version->date, dev->driver.date); 707 DRM_COPY(version->desc, dev->driver.desc); 708 709 return 0; 710 } 711 712 #ifndef __DragonFly__ 713 int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p) 714 { 715 #else 716 int drm_open(struct dev_open_args *ap) 717 { 718 struct cdev *kdev = ap->a_head.a_dev; 719 int flags = ap->a_oflags; 720 int fmt = 0; 721 struct thread *p = curthread; 722 #endif 723 drm_device_t *dev = NULL; 724 int retcode = 0; 725 726 dev = DRIVER_SOFTC(minor(kdev)); 727 728 DRM_DEBUG( "open_count = %d\n", dev->open_count ); 729 730 retcode = drm_open_helper(kdev, flags, fmt, p, dev); 731 732 if ( !retcode ) { 733 atomic_inc( &dev->counts[_DRM_STAT_OPENS] ); 734 DRM_LOCK(); 735 #if defined(__FreeBSD__) || defined(__DragonFly__) 736 device_busy(dev->device); 737 #endif 738 if ( !dev->open_count++ ) 739 retcode = drm_firstopen(dev); 740 DRM_UNLOCK(); 741 } 742 743 return retcode; 744 } 745 746 #ifndef __DragonFly__ 747 int drm_close(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p) 748 { 749 #else 750 int drm_close(struct dev_close_args *ap) 751 { 752 struct cdev *kdev = ap->a_head.a_dev; 753 struct thread *p = curthread; 754 #endif 755 drm_device_t *dev = drm_get_device_from_kdev(kdev); 756 drm_file_t *file_priv; 757 int retcode = 0; 758 759 DRM_DEBUG( "open_count = %d\n", dev->open_count ); 760 761 DRM_LOCK(); 762 763 file_priv = drm_find_file_by_proc(dev, p); 764 if (!file_priv) { 765 DRM_UNLOCK(); 766 DRM_ERROR("can't find authenticator\n"); 767 return EINVAL; 768 } 769 770 if (--file_priv->refs != 0) 771 goto done; 772 773 if (dev->driver.preclose != NULL) 774 dev->driver.preclose(dev, file_priv); 775 776 /* ======================================================== 777 * Begin inline drm_release 778 */ 779 780 #if defined(__FreeBSD__) || defined(__DragonFly__) 781 DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n", 782 DRM_CURRENTPID, (long)dev->device, dev->open_count ); 783 #elif defined(__NetBSD__) || defined(__OpenBSD__) 784 DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n", 785 DRM_CURRENTPID, (long)&dev->device, dev->open_count); 786 #endif 787 788 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 789 && dev->lock.file_priv == file_priv) { 790 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 791 DRM_CURRENTPID, 792 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 793 if (dev->driver.reclaim_buffers_locked != NULL) 794 dev->driver.reclaim_buffers_locked(dev, file_priv); 795 796 drm_lock_free(dev, &dev->lock.hw_lock->lock, 797 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 798 799 /* FIXME: may require heavy-handed reset of 800 hardware at this point, possibly 801 processed via a callback to the X 802 server. */ 803 } else if (dev->driver.reclaim_buffers_locked != NULL && 804 dev->lock.hw_lock != NULL) { 805 /* The lock is required to reclaim buffers */ 806 for (;;) { 807 if ( !dev->lock.hw_lock ) { 808 /* Device has been unregistered */ 809 retcode = EINTR; 810 break; 811 } 812 if (drm_lock_take(&dev->lock.hw_lock->lock, 813 DRM_KERNEL_CONTEXT)) { 814 dev->lock.file_priv = file_priv; 815 dev->lock.lock_time = jiffies; 816 atomic_inc( &dev->counts[_DRM_STAT_LOCKS] ); 817 break; /* Got lock */ 818 } 819 /* Contention */ 820 #if defined(__FreeBSD__) && __FreeBSD_version > 500000 821 retcode = mtx_sleep((void *)&dev->lock.lock_queue, 822 &dev->dev_lock, PZERO | PCATCH, "drmlk2", 0); 823 #elif defined(__DragonFly__) 824 crit_enter(); 825 tsleep_interlock((void *)&dev->lock.lock_queue); 826 DRM_UNLOCK(); 827 retcode = tsleep((void *)&dev->lock.lock_queue, 828 PCATCH, "drmlk2", 0); 829 crit_exit(); 830 DRM_LOCK(); 831 #else 832 retcode = tsleep((void *)&dev->lock.lock_queue, 833 PZERO | PCATCH, "drmlk2", 0); 834 #endif 835 if (retcode) 836 break; 837 } 838 if (retcode == 0) { 839 dev->driver.reclaim_buffers_locked(dev, file_priv); 840 drm_lock_free(dev, &dev->lock.hw_lock->lock, 841 DRM_KERNEL_CONTEXT); 842 } 843 } 844 845 if (dev->driver.use_dma && !dev->driver.reclaim_buffers_locked) 846 drm_reclaim_buffers(dev, file_priv); 847 848 #if defined (__FreeBSD__) && (__FreeBSD_version >= 500000) 849 funsetown(&dev->buf_sigio); 850 #elif defined(__FreeBSD__) || defined(__DragonFly__) 851 funsetown(dev->buf_sigio); 852 #elif defined(__NetBSD__) || defined(__OpenBSD__) 853 dev->buf_pgid = 0; 854 #endif /* __NetBSD__ || __OpenBSD__ */ 855 856 if (dev->driver.postclose != NULL) 857 dev->driver.postclose(dev, file_priv); 858 TAILQ_REMOVE(&dev->files, file_priv, link); 859 free(file_priv, M_DRM); 860 861 /* ======================================================== 862 * End inline drm_release 863 */ 864 865 done: 866 atomic_inc( &dev->counts[_DRM_STAT_CLOSES] ); 867 #if defined(__FreeBSD__) || defined(__DragonFly__) 868 device_unbusy(dev->device); 869 #endif 870 if (--dev->open_count == 0) { 871 retcode = drm_lastclose(dev); 872 } 873 874 DRM_UNLOCK(); 875 876 return retcode; 877 } 878 879 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 880 */ 881 #ifndef __DragonFly__ 882 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags, 883 DRM_STRUCTPROC *p) 884 { 885 #else 886 int drm_ioctl(struct dev_ioctl_args *ap) 887 { 888 struct cdev *kdev = ap->a_head.a_dev; 889 u_long cmd = ap->a_cmd; 890 caddr_t data = ap->a_data; 891 struct thread *p = curthread; 892 #endif 893 drm_device_t *dev = drm_get_device_from_kdev(kdev); 894 int retcode = 0; 895 drm_ioctl_desc_t *ioctl; 896 int (*func)(drm_device_t *dev, void *data, struct drm_file *file_priv); 897 int nr = DRM_IOCTL_NR(cmd); 898 int is_driver_ioctl = 0; 899 drm_file_t *file_priv; 900 901 DRM_LOCK(); 902 file_priv = drm_find_file_by_proc(dev, p); 903 DRM_UNLOCK(); 904 if (file_priv == NULL) { 905 DRM_ERROR("can't find authenticator\n"); 906 return EINVAL; 907 } 908 909 atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] ); 910 ++file_priv->ioctl_count; 911 912 #if defined(__FreeBSD__) || defined(__DragonFly__) 913 DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 914 DRM_CURRENTPID, cmd, nr, (long)dev->device, 915 file_priv->authenticated ); 916 #elif defined(__NetBSD__) || defined(__OpenBSD__) 917 DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 918 DRM_CURRENTPID, cmd, nr, (long)&dev->device, 919 file_priv->authenticated ); 920 #endif 921 922 switch (cmd) { 923 case FIONBIO: 924 case FIOASYNC: 925 return 0; 926 927 #if defined(__FreeBSD__) || defined(__DragonFly__) 928 case FIOSETOWN: 929 return fsetown(*(int *)data, &dev->buf_sigio); 930 931 case FIOGETOWN: 932 #if (__FreeBSD_version >= 500000) 933 *(int *) data = fgetown(&dev->buf_sigio); 934 #else 935 *(int *) data = fgetown(dev->buf_sigio); 936 #endif 937 return 0; 938 #endif /* __FreeBSD__ || __DragonFly__ */ 939 #if defined(__NetBSD__) || defined(__OpenBSD__) 940 case TIOCSPGRP: 941 dev->buf_pgid = *(int *)data; 942 return 0; 943 944 case TIOCGPGRP: 945 *(int *)data = dev->buf_pgid; 946 return 0; 947 #endif /* __NetBSD__ */ 948 } 949 950 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 951 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 952 return EINVAL; 953 } 954 955 ioctl = &drm_ioctls[nr]; 956 /* It's not a core DRM ioctl, try driver-specific. */ 957 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 958 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 959 nr -= DRM_COMMAND_BASE; 960 if (nr > dev->driver.max_ioctl) { 961 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 962 nr, dev->driver.max_ioctl); 963 return EINVAL; 964 } 965 ioctl = &dev->driver.ioctls[nr]; 966 is_driver_ioctl = 1; 967 } 968 func = ioctl->func; 969 970 if (func == NULL) { 971 DRM_DEBUG( "no function\n" ); 972 return EINVAL; 973 } 974 975 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 976 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 977 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 978 return EACCES; 979 980 if (is_driver_ioctl) { 981 DRM_LOCK(); 982 /* shared code returns -errno */ 983 retcode = -func(dev, data, file_priv); 984 DRM_UNLOCK(); 985 } else { 986 retcode = func(dev, data, file_priv); 987 } 988 989 if (retcode != 0) 990 DRM_DEBUG(" returning %d\n", retcode); 991 992 return retcode; 993 } 994 995 drm_local_map_t *drm_getsarea(drm_device_t *dev) 996 { 997 drm_local_map_t *map; 998 999 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 1000 TAILQ_FOREACH(map, &dev->maplist, link) { 1001 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK)) 1002 return map; 1003 } 1004 1005 return NULL; 1006 } 1007 1008 #if DRM_LINUX 1009 1010 #include <sys/sysproto.h> 1011 1012 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 1013 1014 #define LINUX_IOCTL_DRM_MIN 0x6400 1015 #define LINUX_IOCTL_DRM_MAX 0x64ff 1016 1017 static linux_ioctl_function_t drm_linux_ioctl; 1018 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 1019 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 1020 1021 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 1022 linux_ioctl_register_handler, &drm_handler); 1023 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 1024 linux_ioctl_unregister_handler, &drm_handler); 1025 1026 /* The bits for in/out are switched on Linux */ 1027 #define LINUX_IOC_IN IOC_OUT 1028 #define LINUX_IOC_OUT IOC_IN 1029 1030 static int 1031 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 1032 { 1033 int error; 1034 int cmd = args->cmd; 1035 1036 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 1037 if (cmd & LINUX_IOC_IN) 1038 args->cmd |= IOC_IN; 1039 if (cmd & LINUX_IOC_OUT) 1040 args->cmd |= IOC_OUT; 1041 1042 error = ioctl(p, (struct ioctl_args *)args); 1043 1044 return error; 1045 } 1046 #endif /* DRM_LINUX */ 1047