Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/drm/drm_drv.c
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1 /* drm_drv.h -- Generic driver template -*- linux-c -*- 2 * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com 3 */ 4 /*- 5 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. 6 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 7 * All Rights Reserved. 8 * 9 * Permission is hereby granted, free of charge, to any person obtaining a 10 * copy of this software and associated documentation files (the "Software"), 11 * to deal in the Software without restriction, including without limitation 12 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 13 * and/or sell copies of the Software, and to permit persons to whom the 14 * Software is furnished to do so, subject to the following conditions: 15 * 16 * The above copyright notice and this permission notice (including the next 17 * paragraph) shall be included in all copies or substantial portions of the 18 * Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 23 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 26 * OTHER DEALINGS IN THE SOFTWARE. 27 * 28 * Authors: 29 * Rickard E. (Rik) Faith <faith@valinux.com> 30 * Gareth Hughes <gareth@valinux.com> 31 * 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD: releng/6.4/sys/dev/drm/drm_drv.c 176138 2008-02-10 11:15:27Z remko $"); 36 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(drm_device_t *dev); 48 static void drm_unload(drm_device_t *dev); 49 static drm_pci_id_list_t *drm_find_description(int vendor, int device, 50 drm_pci_id_list_t *idlist); 51 52 #ifdef __FreeBSD__ 53 #define DRIVER_SOFTC(unit) \ 54 ((drm_device_t *)devclass_get_softc(drm_devclass, unit)) 55 56 MODULE_VERSION(drm, 1); 57 MODULE_DEPEND(drm, agp, 1, 1, 1); 58 MODULE_DEPEND(drm, pci, 1, 1, 1); 59 #if __FreeBSD_version > 502127 60 MODULE_DEPEND(drm, mem, 1, 1, 1); 61 #endif 62 #endif /* __FreeBSD__ */ 63 64 #if defined(__NetBSD__) || defined(__OpenBSD__) 65 #define DRIVER_SOFTC(unit) \ 66 ((drm_device_t *)device_lookup(&drm_cd, unit)) 67 #endif /* __NetBSD__ || __OpenBSD__ */ 68 69 static drm_ioctl_desc_t drm_ioctls[256] = { 70 [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { drm_version, 0 }, 71 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = { drm_getunique, 0 }, 72 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = { drm_getmagic, 0 }, 73 [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY}, 74 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = { drm_getmap, 0 }, 75 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = { drm_getclient, 0 }, 76 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = { drm_getstats, 0 }, 77 [DRM_IOCTL_NR(DRM_IOCTL_SET_VERSION)] = { drm_setversion, DRM_MASTER|DRM_ROOT_ONLY }, 78 79 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = { drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 80 [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = { drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 81 [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = { drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 82 [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = { drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 83 84 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = { drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 85 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = { drm_rmmap_ioctl, DRM_AUTH }, 86 87 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = { drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 88 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = { drm_getsareactx, DRM_AUTH }, 89 90 [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { drm_addctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 91 [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 92 [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 93 [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { drm_getctx, DRM_AUTH }, 94 [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 95 [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 96 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { drm_resctx, DRM_AUTH }, 97 98 [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = { drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 99 [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = { drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 100 101 [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { drm_lock, DRM_AUTH }, 102 [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { drm_unlock, DRM_AUTH }, 103 [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { drm_noop, DRM_AUTH }, 104 105 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = { drm_addbufs_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 106 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = { drm_markbufs, DRM_AUTH|DRM_MASTER }, 107 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = { drm_infobufs, DRM_AUTH }, 108 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = { drm_mapbufs, DRM_AUTH }, 109 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = { drm_freebufs, DRM_AUTH }, 110 [DRM_IOCTL_NR(DRM_IOCTL_DMA)] = { drm_dma, DRM_AUTH }, 111 112 [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = { drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 113 114 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = { drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 115 [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = { drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 116 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = { drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 117 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = { drm_agp_info_ioctl, DRM_AUTH }, 118 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = { drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 119 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = { drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 120 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = { drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 121 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = { drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 122 123 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = { drm_sg_alloc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 124 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = { drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY }, 125 126 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = { drm_wait_vblank, 0 }, 127 }; 128 129 #ifdef __FreeBSD__ 130 static struct cdevsw drm_cdevsw = { 131 #if __FreeBSD_version >= 502103 132 .d_version = D_VERSION, 133 #endif 134 .d_open = drm_open, 135 .d_close = drm_close, 136 .d_read = drm_read, 137 .d_ioctl = drm_ioctl, 138 .d_poll = drm_poll, 139 .d_mmap = drm_mmap, 140 .d_name = "drm", 141 #if __FreeBSD_version >= 502103 142 .d_flags = D_TRACKCLOSE | D_NEEDGIANT, 143 #else 144 .d_maj = 145, 145 .d_flags = D_TRACKCLOSE, 146 #endif 147 #if __FreeBSD_version < 500000 148 .d_bmaj = -1 149 #endif 150 }; 151 152 int drm_probe(device_t dev, drm_pci_id_list_t *idlist) 153 { 154 drm_pci_id_list_t *id_entry; 155 int vendor, device; 156 #if __FreeBSD_version < 700010 157 device_t realdev; 158 159 if (!strcmp(device_get_name(dev), "drmsub")) 160 realdev = device_get_parent(dev); 161 else 162 realdev = dev; 163 vendor = pci_get_vendor(realdev); 164 device = pci_get_device(realdev); 165 #else 166 vendor = pci_get_vendor(dev); 167 device = pci_get_device(dev); 168 #endif 169 170 id_entry = drm_find_description(vendor, device, idlist); 171 if (id_entry != NULL) { 172 device_set_desc(dev, id_entry->name); 173 return 0; 174 } 175 176 return ENXIO; 177 } 178 179 int drm_attach(device_t nbdev, drm_pci_id_list_t *idlist) 180 { 181 drm_device_t *dev; 182 drm_pci_id_list_t *id_entry; 183 int unit; 184 185 unit = device_get_unit(nbdev); 186 dev = device_get_softc(nbdev); 187 188 #if __FreeBSD_version < 700010 189 if (!strcmp(device_get_name(nbdev), "drmsub")) 190 dev->device = device_get_parent(nbdev); 191 else 192 dev->device = nbdev; 193 #else 194 dev->device = nbdev; 195 #endif 196 dev->devnode = make_dev(&drm_cdevsw, 197 unit, 198 DRM_DEV_UID, 199 DRM_DEV_GID, 200 DRM_DEV_MODE, 201 "dri/card%d", unit); 202 #if __FreeBSD_version >= 500000 203 mtx_init(&dev->dev_lock, "drm device", NULL, MTX_DEF); 204 #endif 205 206 id_entry = drm_find_description(pci_get_vendor(dev->device), 207 pci_get_device(dev->device), idlist); 208 dev->id_entry = id_entry; 209 210 return drm_load(dev); 211 } 212 213 int drm_detach(device_t dev) 214 { 215 drm_unload(device_get_softc(dev)); 216 return 0; 217 } 218 219 #ifndef DRM_DEV_NAME 220 #define DRM_DEV_NAME "drm" 221 #endif 222 223 devclass_t drm_devclass; 224 225 #elif defined(__NetBSD__) || defined(__OpenBSD__) 226 227 static struct cdevsw drm_cdevsw = { 228 drm_open, 229 drm_close, 230 drm_read, 231 nowrite, 232 drm_ioctl, 233 nostop, 234 notty, 235 drm_poll, 236 drm_mmap, 237 nokqfilter, 238 D_TTY 239 }; 240 241 int drm_refcnt = 0; 242 243 #if defined(__NetBSD__) && __NetBSD_Version__ >= 106080000 244 MOD_DEV("drm", DRIVER_NAME, NULL, -1, &drm_cdevsw, CDEV_MAJOR); 245 #else 246 MOD_DEV("drm", LM_DT_CHAR, CDEV_MAJOR, &drm_cdevsw); 247 #endif 248 249 int drm_lkmentry(struct lkm_table *lkmtp, int cmd, int ver); 250 static int drm_lkmhandle(struct lkm_table *lkmtp, int cmd); 251 252 int drm_modprobe(void); 253 int drm_probe(struct pci_attach_args *pa); 254 void drm_attach(struct pci_attach_args *pa, dev_t kdev); 255 256 int drm_lkmentry(struct lkm_table *lkmtp, int cmd, int ver) { 257 DISPATCH(lkmtp, cmd, ver, drm_lkmhandle, drm_lkmhandle, drm_lkmhandle); 258 } 259 260 static int drm_lkmhandle(struct lkm_table *lkmtp, int cmd) 261 { 262 int error = 0; 263 264 switch(cmd) { 265 case LKM_E_LOAD: 266 if (lkmexists(lkmtp)) 267 return EEXIST; 268 269 if(drm_modprobe()) 270 return 0; 271 272 return 1; 273 274 case LKM_E_UNLOAD: 275 if (drm_refcnt > 0) 276 return (EBUSY); 277 break; 278 case LKM_E_STAT: 279 break; 280 281 default: 282 error = EIO; 283 break; 284 } 285 286 return error; 287 } 288 289 int drm_modprobe(void) 290 { 291 struct pci_attach_args pa; 292 int error; 293 294 error = pci_find_device(&pa, drm_probe, idlist); 295 if (error != 0) 296 drm_attach(&pa, 0); 297 298 return error; 299 } 300 301 int drm_probe(struct pci_attach_args *pa, drm_pci_id_list_t idlist) 302 { 303 const char *desc; 304 drm_pci_id_list_t *id_entry; 305 306 id_entry = drm_find_description(PCI_VENDOR(pa->pa_id), 307 PCI_PRODUCT(pa->pa_id), idlist); 308 if (id_entry != NULL) { 309 return 1; 310 } 311 312 return 0; 313 } 314 315 void drm_attach(struct pci_attach_args *pa, dev_t kdev, 316 drm_pci_id_list_t *idlist) 317 { 318 int i; 319 drm_device_t *dev; 320 drm_pci_id_list_t *id_entry; 321 322 config_makeroom(kdev, &drm_cd); 323 drm_cd.cd_devs[(kdev)] = malloc(sizeof(drm_device_t), M_DRM, M_WAITOK); 324 dev = DRIVER_SOFTC(kdev); 325 326 memset(dev, 0, sizeof(drm_device_t)); 327 memcpy(&dev->pa, pa, sizeof(dev->pa)); 328 329 dev->irq = pa->pa_intrline; 330 dev->pci_domain = 0; 331 dev->pci_bus = pa->pa_bus; 332 dev->pci_slot = pa->pa_device; 333 dev->pci_func = pa->pa_function; 334 dev->dma_tag = pa->pa_dmat; 335 336 id_entry = drm_find_description(PCI_VENDOR(pa->pa_id), 337 PCI_PRODUCT(pa->pa_id), idlist); 338 dev->driver.pci_id_entry = id_entry; 339 340 DRM_INFO("%s", id_entry->name); 341 drm_load(dev); 342 } 343 344 int drm_detach(struct device *self, int flags) 345 { 346 drm_unload((drm_device_t *)self); 347 return 0; 348 } 349 350 int drm_activate(struct device *self, enum devact act) 351 { 352 switch (act) { 353 case DVACT_ACTIVATE: 354 return (EOPNOTSUPP); 355 break; 356 357 case DVACT_DEACTIVATE: 358 /* FIXME */ 359 break; 360 } 361 return (0); 362 } 363 #endif /* __NetBSD__ || __OpenBSD__ */ 364 365 drm_pci_id_list_t *drm_find_description(int vendor, int device, 366 drm_pci_id_list_t *idlist) 367 { 368 int i = 0; 369 370 for (i = 0; idlist[i].vendor != 0; i++) { 371 if ((idlist[i].vendor == vendor) && 372 (idlist[i].device == device)) { 373 return &idlist[i]; 374 } 375 } 376 return NULL; 377 } 378 379 static int drm_firstopen(drm_device_t *dev) 380 { 381 drm_local_map_t *map; 382 int i; 383 384 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 385 386 /* prebuild the SAREA */ 387 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, 388 _DRM_CONTAINS_LOCK, &map); 389 if (i != 0) 390 return i; 391 392 if (dev->driver.firstopen) 393 dev->driver.firstopen(dev); 394 395 dev->buf_use = 0; 396 397 if (dev->driver.use_dma) { 398 i = drm_dma_setup(dev); 399 if (i != 0) 400 return i; 401 } 402 403 dev->counters = 6; 404 dev->types[0] = _DRM_STAT_LOCK; 405 dev->types[1] = _DRM_STAT_OPENS; 406 dev->types[2] = _DRM_STAT_CLOSES; 407 dev->types[3] = _DRM_STAT_IOCTLS; 408 dev->types[4] = _DRM_STAT_LOCKS; 409 dev->types[5] = _DRM_STAT_UNLOCKS; 410 411 for ( i = 0 ; i < DRM_ARRAY_SIZE(dev->counts) ; i++ ) 412 atomic_set( &dev->counts[i], 0 ); 413 414 for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) { 415 dev->magiclist[i].head = NULL; 416 dev->magiclist[i].tail = NULL; 417 } 418 419 dev->lock.lock_queue = 0; 420 dev->irq_enabled = 0; 421 dev->context_flag = 0; 422 dev->last_context = 0; 423 dev->if_version = 0; 424 425 #ifdef __FreeBSD__ 426 dev->buf_sigio = NULL; 427 #elif defined(__NetBSD__) || defined(__OpenBSD__) 428 dev->buf_pgid = 0; 429 #endif 430 431 DRM_DEBUG( "\n" ); 432 433 return 0; 434 } 435 436 static int drm_lastclose(drm_device_t *dev) 437 { 438 drm_magic_entry_t *pt, *next; 439 drm_local_map_t *map, *mapsave; 440 int i; 441 442 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 443 444 DRM_DEBUG( "\n" ); 445 446 if (dev->driver.lastclose != NULL) 447 dev->driver.lastclose(dev); 448 449 if (dev->irq_enabled) 450 drm_irq_uninstall(dev); 451 452 if ( dev->unique ) { 453 free(dev->unique, M_DRM); 454 dev->unique = NULL; 455 dev->unique_len = 0; 456 } 457 /* Clear pid list */ 458 for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) { 459 for ( pt = dev->magiclist[i].head ; pt ; pt = next ) { 460 next = pt->next; 461 free(pt, M_DRM); 462 } 463 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 464 } 465 466 /* Clear AGP information */ 467 if ( dev->agp ) { 468 drm_agp_mem_t *entry; 469 drm_agp_mem_t *nexte; 470 471 /* Remove AGP resources, but leave dev->agp intact until 472 * drm_unload is called. 473 */ 474 for ( entry = dev->agp->memory ; entry ; entry = nexte ) { 475 nexte = entry->next; 476 if ( entry->bound ) 477 drm_agp_unbind_memory(entry->handle); 478 drm_agp_free_memory(entry->handle); 479 free(entry, M_DRM); 480 } 481 dev->agp->memory = NULL; 482 483 if (dev->agp->acquired) 484 drm_agp_release(dev); 485 486 dev->agp->acquired = 0; 487 dev->agp->enabled = 0; 488 } 489 if (dev->sg != NULL) { 490 drm_sg_cleanup(dev->sg); 491 dev->sg = NULL; 492 } 493 494 TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) { 495 drm_rmmap(dev, map); 496 } 497 498 499 drm_dma_takedown(dev); 500 if ( dev->lock.hw_lock ) { 501 dev->lock.hw_lock = NULL; /* SHM removed */ 502 dev->lock.filp = NULL; 503 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 504 } 505 506 return 0; 507 } 508 509 static int drm_load(drm_device_t *dev) 510 { 511 int retcode; 512 513 DRM_DEBUG( "\n" ); 514 515 dev->irq = pci_get_irq(dev->device); 516 /* XXX Fix domain number (alpha hoses) */ 517 dev->pci_domain = 0; 518 dev->pci_bus = pci_get_bus(dev->device); 519 dev->pci_slot = pci_get_slot(dev->device); 520 dev->pci_func = pci_get_function(dev->device); 521 522 dev->pci_vendor = pci_get_vendor(dev->device); 523 dev->pci_device = pci_get_device(dev->device); 524 525 TAILQ_INIT(&dev->maplist); 526 527 drm_mem_init(); 528 #ifdef __FreeBSD__ 529 drm_sysctl_init(dev); 530 #endif 531 TAILQ_INIT(&dev->files); 532 533 if (dev->driver.load != NULL) { 534 DRM_LOCK(); 535 retcode = dev->driver.load(dev, dev->id_entry->driver_private); 536 DRM_UNLOCK(); 537 if (retcode != 0) 538 goto error; 539 } 540 541 if (dev->driver.use_agp) { 542 if (drm_device_is_agp(dev)) 543 dev->agp = drm_agp_init(); 544 if (dev->driver.require_agp && dev->agp == NULL) { 545 DRM_ERROR("Card isn't AGP, or couldn't initialize " 546 "AGP.\n"); 547 retcode = DRM_ERR(ENOMEM); 548 goto error; 549 } 550 if (dev->agp != NULL) { 551 if (drm_mtrr_add(dev->agp->info.ai_aperture_base, 552 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0) 553 dev->agp->mtrr = 1; 554 } 555 } 556 557 retcode = drm_ctxbitmap_init(dev); 558 if (retcode != 0) { 559 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 560 goto error; 561 } 562 563 DRM_INFO("Initialized %s %d.%d.%d %s\n", 564 dev->driver.name, 565 dev->driver.major, 566 dev->driver.minor, 567 dev->driver.patchlevel, 568 dev->driver.date); 569 570 return 0; 571 572 error: 573 #ifdef __FreeBSD__ 574 drm_sysctl_cleanup(dev); 575 #endif 576 DRM_LOCK(); 577 drm_lastclose(dev); 578 DRM_UNLOCK(); 579 #ifdef __FreeBSD__ 580 destroy_dev(dev->devnode); 581 #if __FreeBSD_version >= 500000 582 mtx_destroy(&dev->dev_lock); 583 #endif 584 #endif 585 return retcode; 586 } 587 588 static void drm_unload(drm_device_t *dev) 589 { 590 int i; 591 592 DRM_DEBUG( "\n" ); 593 594 #ifdef __FreeBSD__ 595 drm_sysctl_cleanup(dev); 596 destroy_dev(dev->devnode); 597 #endif 598 599 drm_ctxbitmap_cleanup(dev); 600 601 if (dev->agp && dev->agp->mtrr) { 602 int __unused retcode; 603 604 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, 605 dev->agp->info.ai_aperture_size, DRM_MTRR_WC); 606 DRM_DEBUG("mtrr_del = %d", retcode); 607 } 608 609 DRM_LOCK(); 610 drm_lastclose(dev); 611 DRM_UNLOCK(); 612 613 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 614 * worried about resource consumption while the DRM is inactive (between 615 * lastclose and firstopen or unload) because these aren't actually 616 * taking up KVA, just keeping the PCI resource allocated. 617 */ 618 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 619 if (dev->pcir[i] == NULL) 620 continue; 621 bus_release_resource(dev->device, SYS_RES_MEMORY, 622 dev->pcirid[i], dev->pcir[i]); 623 dev->pcir[i] = NULL; 624 } 625 626 if ( dev->agp ) { 627 free(dev->agp, M_DRM); 628 dev->agp = NULL; 629 } 630 631 if (dev->driver.unload != NULL) 632 dev->driver.unload(dev); 633 634 drm_mem_uninit(); 635 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 636 mtx_destroy(&dev->dev_lock); 637 #endif 638 } 639 640 641 int drm_version(DRM_IOCTL_ARGS) 642 { 643 DRM_DEVICE; 644 drm_version_t version; 645 int len; 646 647 DRM_COPY_FROM_USER_IOCTL( version, (drm_version_t *)data, sizeof(version) ); 648 649 #define DRM_COPY( name, value ) \ 650 len = strlen( value ); \ 651 if ( len > name##_len ) len = name##_len; \ 652 name##_len = strlen( value ); \ 653 if ( len && name ) { \ 654 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 655 return DRM_ERR(EFAULT); \ 656 } 657 658 version.version_major = dev->driver.major; 659 version.version_minor = dev->driver.minor; 660 version.version_patchlevel = dev->driver.patchlevel; 661 662 DRM_COPY(version.name, dev->driver.name); 663 DRM_COPY(version.date, dev->driver.date); 664 DRM_COPY(version.desc, dev->driver.desc); 665 666 DRM_COPY_TO_USER_IOCTL( (drm_version_t *)data, version, sizeof(version) ); 667 668 return 0; 669 } 670 671 int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p) 672 { 673 drm_device_t *dev = NULL; 674 int retcode = 0; 675 676 dev = DRIVER_SOFTC(minor(kdev)); 677 678 DRM_DEBUG( "open_count = %d\n", dev->open_count ); 679 680 retcode = drm_open_helper(kdev, flags, fmt, p, dev); 681 682 if ( !retcode ) { 683 atomic_inc( &dev->counts[_DRM_STAT_OPENS] ); 684 DRM_LOCK(); 685 #ifdef __FreeBSD__ 686 device_busy(dev->device); 687 #endif 688 if ( !dev->open_count++ ) 689 retcode = drm_firstopen(dev); 690 DRM_UNLOCK(); 691 } 692 693 return retcode; 694 } 695 696 int drm_close(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p) 697 { 698 drm_file_t *priv; 699 DRM_DEVICE; 700 int retcode = 0; 701 DRMFILE filp = (void *)(uintptr_t)(DRM_CURRENTPID); 702 703 DRM_DEBUG( "open_count = %d\n", dev->open_count ); 704 705 DRM_LOCK(); 706 707 priv = drm_find_file_by_proc(dev, p); 708 if (!priv) { 709 DRM_UNLOCK(); 710 DRM_ERROR("can't find authenticator\n"); 711 return EINVAL; 712 } 713 714 if (--priv->refs != 0) 715 goto done; 716 717 if (dev->driver.preclose != NULL) 718 dev->driver.preclose(dev, filp); 719 720 /* ======================================================== 721 * Begin inline drm_release 722 */ 723 724 #ifdef __FreeBSD__ 725 DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n", 726 DRM_CURRENTPID, (long)dev->device, dev->open_count ); 727 #elif defined(__NetBSD__) || defined(__OpenBSD__) 728 DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n", 729 DRM_CURRENTPID, (long)&dev->device, dev->open_count); 730 #endif 731 732 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 733 && dev->lock.filp == filp) { 734 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 735 DRM_CURRENTPID, 736 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 737 if (dev->driver.reclaim_buffers_locked != NULL) 738 dev->driver.reclaim_buffers_locked(dev, filp); 739 740 drm_lock_free(dev, &dev->lock.hw_lock->lock, 741 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 742 743 /* FIXME: may require heavy-handed reset of 744 hardware at this point, possibly 745 processed via a callback to the X 746 server. */ 747 } else if (dev->driver.reclaim_buffers_locked != NULL && 748 dev->lock.hw_lock != NULL) { 749 /* The lock is required to reclaim buffers */ 750 for (;;) { 751 if ( !dev->lock.hw_lock ) { 752 /* Device has been unregistered */ 753 retcode = DRM_ERR(EINTR); 754 break; 755 } 756 if (drm_lock_take(&dev->lock.hw_lock->lock, 757 DRM_KERNEL_CONTEXT)) { 758 dev->lock.filp = filp; 759 dev->lock.lock_time = jiffies; 760 atomic_inc( &dev->counts[_DRM_STAT_LOCKS] ); 761 break; /* Got lock */ 762 } 763 /* Contention */ 764 #if defined(__FreeBSD__) && __FreeBSD_version > 500000 765 retcode = msleep((void *)&dev->lock.lock_queue, 766 &dev->dev_lock, PZERO | PCATCH, "drmlk2", 0); 767 #else 768 retcode = tsleep((void *)&dev->lock.lock_queue, 769 PZERO | PCATCH, "drmlk2", 0); 770 #endif 771 if (retcode) 772 break; 773 } 774 if (retcode == 0) { 775 dev->driver.reclaim_buffers_locked(dev, filp); 776 drm_lock_free(dev, &dev->lock.hw_lock->lock, 777 DRM_KERNEL_CONTEXT); 778 } 779 } 780 781 if (dev->driver.use_dma && !dev->driver.reclaim_buffers_locked) 782 drm_reclaim_buffers(dev, filp); 783 784 #if defined (__FreeBSD__) && (__FreeBSD_version >= 500000) 785 funsetown(&dev->buf_sigio); 786 #elif defined(__FreeBSD__) 787 funsetown(dev->buf_sigio); 788 #elif defined(__NetBSD__) || defined(__OpenBSD__) 789 dev->buf_pgid = 0; 790 #endif /* __NetBSD__ || __OpenBSD__ */ 791 792 if (dev->driver.postclose != NULL) 793 dev->driver.postclose(dev, priv); 794 795 TAILQ_REMOVE(&dev->files, priv, link); 796 free(priv, M_DRM); 797 798 /* ======================================================== 799 * End inline drm_release 800 */ 801 802 done: 803 atomic_inc( &dev->counts[_DRM_STAT_CLOSES] ); 804 #ifdef __FreeBSD__ 805 device_unbusy(dev->device); 806 #endif 807 if (--dev->open_count == 0) { 808 retcode = drm_lastclose(dev); 809 } 810 811 DRM_UNLOCK(); 812 813 return retcode; 814 } 815 816 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 817 */ 818 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags, 819 DRM_STRUCTPROC *p) 820 { 821 DRM_DEVICE; 822 int retcode = 0; 823 drm_ioctl_desc_t *ioctl; 824 int (*func)(DRM_IOCTL_ARGS); 825 int nr = DRM_IOCTL_NR(cmd); 826 int is_driver_ioctl = 0; 827 drm_file_t *priv; 828 DRMFILE filp = (DRMFILE)(uintptr_t)DRM_CURRENTPID; 829 830 DRM_LOCK(); 831 priv = drm_find_file_by_proc(dev, p); 832 DRM_UNLOCK(); 833 if (priv == NULL) { 834 DRM_ERROR("can't find authenticator\n"); 835 return EINVAL; 836 } 837 838 atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] ); 839 ++priv->ioctl_count; 840 841 #ifdef __FreeBSD__ 842 DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 843 DRM_CURRENTPID, cmd, nr, (long)dev->device, priv->authenticated ); 844 #elif defined(__NetBSD__) || defined(__OpenBSD__) 845 DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 846 DRM_CURRENTPID, cmd, nr, (long)&dev->device, priv->authenticated ); 847 #endif 848 849 switch (cmd) { 850 case FIONBIO: 851 case FIOASYNC: 852 return 0; 853 854 #ifdef __FreeBSD__ 855 case FIOSETOWN: 856 return fsetown(*(int *)data, &dev->buf_sigio); 857 858 case FIOGETOWN: 859 #if (__FreeBSD_version >= 500000) 860 *(int *) data = fgetown(&dev->buf_sigio); 861 #else 862 *(int *) data = fgetown(dev->buf_sigio); 863 #endif 864 return 0; 865 #endif /* __FreeBSD__ */ 866 #if defined(__NetBSD__) || defined(__OpenBSD__) 867 case TIOCSPGRP: 868 dev->buf_pgid = *(int *)data; 869 return 0; 870 871 case TIOCGPGRP: 872 *(int *)data = dev->buf_pgid; 873 return 0; 874 #endif /* __NetBSD__ */ 875 } 876 877 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 878 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 879 return EINVAL; 880 } 881 882 ioctl = &drm_ioctls[nr]; 883 /* It's not a core DRM ioctl, try driver-specific. */ 884 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 885 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 886 nr -= DRM_COMMAND_BASE; 887 if (nr > dev->driver.max_ioctl) { 888 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 889 nr, dev->driver.max_ioctl); 890 return EINVAL; 891 } 892 ioctl = &dev->driver.ioctls[nr]; 893 is_driver_ioctl = 1; 894 } 895 func = ioctl->func; 896 897 if (func == NULL) { 898 DRM_DEBUG( "no function\n" ); 899 return EINVAL; 900 } 901 /* ioctl->master check should be against something in the filp set up 902 * for the first opener, but it doesn't matter yet. 903 */ 904 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 905 ((ioctl->flags & DRM_AUTH) && !priv->authenticated) || 906 ((ioctl->flags & DRM_MASTER) && !priv->master)) 907 return EACCES; 908 909 if (is_driver_ioctl) 910 DRM_LOCK(); 911 retcode = func(kdev, cmd, data, flags, p, filp); 912 if (is_driver_ioctl) 913 DRM_UNLOCK(); 914 915 if (retcode != 0) 916 DRM_DEBUG(" returning %d\n", retcode); 917 918 return DRM_ERR(retcode); 919 } 920 921 922 #if DRM_LINUX 923 924 #include <sys/sysproto.h> 925 926 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 927 928 #define LINUX_IOCTL_DRM_MIN 0x6400 929 #define LINUX_IOCTL_DRM_MAX 0x64ff 930 931 static linux_ioctl_function_t drm_linux_ioctl; 932 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 933 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 934 935 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 936 linux_ioctl_register_handler, &drm_handler); 937 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 938 linux_ioctl_unregister_handler, &drm_handler); 939 940 /* The bits for in/out are switched on Linux */ 941 #define LINUX_IOC_IN IOC_OUT 942 #define LINUX_IOC_OUT IOC_IN 943 944 static int 945 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 946 { 947 int error; 948 int cmd = args->cmd; 949 950 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 951 if (cmd & LINUX_IOC_IN) 952 args->cmd |= IOC_IN; 953 if (cmd & LINUX_IOC_OUT) 954 args->cmd |= IOC_OUT; 955 956 error = ioctl(p, (struct ioctl_args *)args); 957 958 return error; 959 } 960 #endif /* DRM_LINUX */
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