drm_drv.c revision 184213
1193323Sed/*- 2193323Sed * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. 3193323Sed * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 4193323Sed * All Rights Reserved. 5193323Sed * 6193323Sed * Permission is hereby granted, free of charge, to any person obtaining a 7193323Sed * copy of this software and associated documentation files (the "Software"), 8193323Sed * to deal in the Software without restriction, including without limitation 9193323Sed * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10193323Sed * and/or sell copies of the Software, and to permit persons to whom the 11193323Sed * Software is furnished to do so, subject to the following conditions: 12193323Sed * 13193323Sed * The above copyright notice and this permission notice (including the next 14193323Sed * paragraph) shall be included in all copies or substantial portions of the 15193323Sed * Software. 16193323Sed * 17193323Sed * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18193323Sed * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19193323Sed * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20193323Sed * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 21207618Srdivacky * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22203954Srdivacky * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23249423Sdim * OTHER DEALINGS IN THE SOFTWARE. 24207618Srdivacky * 25218893Sdim * Authors: 26193323Sed * Rickard E. (Rik) Faith <faith@valinux.com> 27193323Sed * Gareth Hughes <gareth@valinux.com> 28193323Sed * 29193323Sed */ 30193323Sed 31199481Srdivacky#include <sys/cdefs.h> 32193323Sed__FBSDID("$FreeBSD: head/sys/dev/drm/drm_drv.c 184213 2008-10-23 20:23:03Z rnoland $"); 33193323Sed 34193323Sed/** @file drm_drv.c 35193323Sed * The catch-all file for DRM device support, including module setup/teardown, 36193323Sed * open/close, and ioctl dispatch. 37193323Sed */ 38193323Sed 39193323Sed 40193323Sed#include <sys/limits.h> 41193323Sed#include "dev/drm/drmP.h" 42243830Sdim#include "dev/drm/drm.h" 43198090Srdivacky#include "dev/drm/drm_sarea.h" 44193323Sed 45198090Srdivacky#ifdef DRM_DEBUG_DEFAULT_ON 46193323Sedint drm_debug_flag = 1; 47193323Sed#else 48193323Sedint drm_debug_flag = 0; 49193323Sed#endif 50218893Sdim 51193323Sedstatic int drm_load(struct drm_device *dev); 52193323Sedstatic void drm_unload(struct drm_device *dev); 53193323Sedstatic drm_pci_id_list_t *drm_find_description(int vendor, int device, 54193323Sed drm_pci_id_list_t *idlist); 55193323Sed 56193323Sed#define DRIVER_SOFTC(unit) \ 57193323Sed ((struct drm_device *)devclass_get_softc(drm_devclass, unit)) 58193323Sed 59193323SedMODULE_VERSION(drm, 1); 60193323SedMODULE_DEPEND(drm, agp, 1, 1, 1); 61193323SedMODULE_DEPEND(drm, pci, 1, 1, 1); 62193323SedMODULE_DEPEND(drm, mem, 1, 1, 1); 63193323Sed 64193323Sedstatic drm_ioctl_desc_t drm_ioctls[256] = { 65234353Sdim DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), 66193323Sed DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), 67193323Sed DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), 68193323Sed DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), 69193323Sed DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), 70193323Sed DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), 71193323Sed DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), 72193323Sed DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), 73193323Sed 74193323Sed DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 75193323Sed DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 76193323Sed DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 77193323Sed DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 78193323Sed 79193323Sed DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 80193323Sed DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), 81193323Sed 82193323Sed DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 83193323Sed DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), 84193323Sed 85210299Sed DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 86193323Sed DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 87193323Sed DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 88193323Sed DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), 89193323Sed DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 90193323Sed DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 91193323Sed DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), 92193323Sed 93193323Sed DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 94193323Sed DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 95193323Sed 96193323Sed DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), 97193323Sed DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), 98218893Sdim DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), 99203954Srdivacky 100193323Sed DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 101193323Sed DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER), 102193323Sed DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), 103193323Sed DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), 104210299Sed DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), 105210299Sed DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), 106210299Sed 107193323Sed DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 108193323Sed 109193323Sed DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 110193323Sed DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 111212904Sdim DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 112212904Sdim DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), 113212904Sdim DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 114193323Sed DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 115218893Sdim DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 116212904Sdim DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 117193323Sed 118193323Sed DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 119193323Sed DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 120212904Sdim 121193323Sed DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0), 122234353Sdim DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), 123234353Sdim DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 124193323Sed}; 125212904Sdim 126212904Sdimstatic struct cdevsw drm_cdevsw = { 127212904Sdim .d_version = D_VERSION, 128193323Sed .d_open = drm_open, 129218893Sdim .d_read = drm_read, 130212904Sdim .d_ioctl = drm_ioctl, 131198090Srdivacky .d_poll = drm_poll, 132193323Sed .d_mmap = drm_mmap, 133234353Sdim .d_name = "drm", 134263508Sdim .d_flags = D_TRACKCLOSE | D_NEEDGIANT 135263508Sdim}; 136193323Sed 137193323Sedint drm_probe(device_t dev, drm_pci_id_list_t *idlist) 138193323Sed{ 139193323Sed drm_pci_id_list_t *id_entry; 140193323Sed int vendor, device; 141193323Sed#if __FreeBSD_version < 700010 142193323Sed device_t realdev; 143193323Sed 144212904Sdim if (!strcmp(device_get_name(dev), "drmsub")) 145212904Sdim realdev = device_get_parent(dev); 146212904Sdim else 147212904Sdim realdev = dev; 148193323Sed vendor = pci_get_vendor(realdev); 149218893Sdim device = pci_get_device(realdev); 150212904Sdim#else 151198090Srdivacky vendor = pci_get_vendor(dev); 152193323Sed device = pci_get_device(dev); 153193323Sed#endif 154243830Sdim 155199481Srdivacky id_entry = drm_find_description(vendor, device, idlist); 156193323Sed if (id_entry != NULL) { 157207618Srdivacky device_set_desc(dev, id_entry->name); 158207618Srdivacky return 0; 159207618Srdivacky } 160207618Srdivacky 161207618Srdivacky return ENXIO; 162243830Sdim} 163207618Srdivacky 164207618Srdivackyint drm_attach(device_t nbdev, drm_pci_id_list_t *idlist) 165207618Srdivacky{ 166207618Srdivacky struct drm_device *dev; 167207618Srdivacky drm_pci_id_list_t *id_entry; 168243830Sdim int unit; 169207618Srdivacky 170207618Srdivacky unit = device_get_unit(nbdev); 171207618Srdivacky dev = device_get_softc(nbdev); 172207618Srdivacky 173207618Srdivacky#if __FreeBSD_version < 700010 174207618Srdivacky if (!strcmp(device_get_name(nbdev), "drmsub")) 175207618Srdivacky dev->device = device_get_parent(nbdev); 176207618Srdivacky else 177207618Srdivacky dev->device = nbdev; 178207618Srdivacky#else 179207618Srdivacky dev->device = nbdev; 180207618Srdivacky#endif 181207618Srdivacky dev->devnode = make_dev(&drm_cdevsw, 182207618Srdivacky unit, 183207618Srdivacky DRM_DEV_UID, 184193323Sed DRM_DEV_GID, 185193323Sed DRM_DEV_MODE, 186193323Sed "dri/card%d", unit); 187193323Sed 188193323Sed mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF); 189193323Sed mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF); 190193323Sed mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF); 191221345Sdim mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF); 192193323Sed mtx_init(&dev->tsk_lock, "drmtsk", NULL, MTX_DEF); 193193323Sed 194234353Sdim id_entry = drm_find_description(pci_get_vendor(dev->device), 195234353Sdim pci_get_device(dev->device), idlist); 196234353Sdim dev->id_entry = id_entry; 197193323Sed 198193323Sed return drm_load(dev); 199193323Sed} 200193323Sed 201int drm_detach(device_t dev) 202{ 203 drm_unload(device_get_softc(dev)); 204 return 0; 205} 206 207#ifndef DRM_DEV_NAME 208#define DRM_DEV_NAME "drm" 209#endif 210 211devclass_t drm_devclass; 212 213drm_pci_id_list_t *drm_find_description(int vendor, int device, 214 drm_pci_id_list_t *idlist) 215{ 216 int i = 0; 217 218 for (i = 0; idlist[i].vendor != 0; i++) { 219 if ((idlist[i].vendor == vendor) && 220 (idlist[i].device == device)) { 221 return &idlist[i]; 222 } 223 } 224 return NULL; 225} 226 227static int drm_firstopen(struct drm_device *dev) 228{ 229 drm_local_map_t *map; 230 int i; 231 232 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 233 234 /* prebuild the SAREA */ 235 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, 236 _DRM_CONTAINS_LOCK, &map); 237 if (i != 0) 238 return i; 239 240 if (dev->driver->firstopen) 241 dev->driver->firstopen(dev); 242 243 dev->buf_use = 0; 244 245 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { 246 i = drm_dma_setup(dev); 247 if (i != 0) 248 return i; 249 } 250 251 for (i = 0; i < DRM_HASH_SIZE; i++) { 252 dev->magiclist[i].head = NULL; 253 dev->magiclist[i].tail = NULL; 254 } 255 256 dev->lock.lock_queue = 0; 257 dev->irq_enabled = 0; 258 dev->context_flag = 0; 259 dev->last_context = 0; 260 dev->if_version = 0; 261 262 dev->buf_sigio = NULL; 263 264 DRM_DEBUG("\n"); 265 266 return 0; 267} 268 269static int drm_lastclose(struct drm_device *dev) 270{ 271 drm_magic_entry_t *pt, *next; 272 drm_local_map_t *map, *mapsave; 273 int i; 274 275 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 276 277 DRM_DEBUG("\n"); 278 279 if (dev->driver->lastclose != NULL) 280 dev->driver->lastclose(dev); 281 282 if (dev->irq_enabled) 283 drm_irq_uninstall(dev); 284 285 if (dev->unique) { 286 free(dev->unique, DRM_MEM_DRIVER); 287 dev->unique = NULL; 288 dev->unique_len = 0; 289 } 290 /* Clear pid list */ 291 for (i = 0; i < DRM_HASH_SIZE; i++) { 292 for (pt = dev->magiclist[i].head; pt; pt = next) { 293 next = pt->next; 294 free(pt, DRM_MEM_MAGIC); 295 } 296 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 297 } 298 299 DRM_UNLOCK(); 300 drm_drawable_free_all(dev); 301 DRM_LOCK(); 302 303 /* Clear AGP information */ 304 if (dev->agp) { 305 drm_agp_mem_t *entry; 306 drm_agp_mem_t *nexte; 307 308 /* Remove AGP resources, but leave dev->agp intact until 309 * drm_unload is called. 310 */ 311 for (entry = dev->agp->memory; entry; entry = nexte) { 312 nexte = entry->next; 313 if (entry->bound) 314 drm_agp_unbind_memory(entry->handle); 315 drm_agp_free_memory(entry->handle); 316 free(entry, DRM_MEM_AGPLISTS); 317 } 318 dev->agp->memory = NULL; 319 320 if (dev->agp->acquired) 321 drm_agp_release(dev); 322 323 dev->agp->acquired = 0; 324 dev->agp->enabled = 0; 325 } 326 if (dev->sg != NULL) { 327 drm_sg_cleanup(dev->sg); 328 dev->sg = NULL; 329 } 330 331 TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) { 332 if (!(map->flags & _DRM_DRIVER)) 333 drm_rmmap(dev, map); 334 } 335 336 drm_dma_takedown(dev); 337 if (dev->lock.hw_lock) { 338 dev->lock.hw_lock = NULL; /* SHM removed */ 339 dev->lock.file_priv = NULL; 340 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 341 } 342 343 return 0; 344} 345 346static int drm_load(struct drm_device *dev) 347{ 348 int i, retcode; 349 350 DRM_DEBUG("\n"); 351 352 dev->irq = pci_get_irq(dev->device); 353#if __FreeBSD_version >= 700053 354 dev->pci_domain = pci_get_domain(dev->device); 355#else 356 dev->pci_domain = 0; 357#endif 358 dev->pci_bus = pci_get_bus(dev->device); 359 dev->pci_slot = pci_get_slot(dev->device); 360 dev->pci_func = pci_get_function(dev->device); 361 362 dev->pci_vendor = pci_get_vendor(dev->device); 363 dev->pci_device = pci_get_device(dev->device); 364 365 TAILQ_INIT(&dev->maplist); 366 367 drm_mem_init(); 368 drm_sysctl_init(dev); 369 TAILQ_INIT(&dev->files); 370 371 dev->counters = 6; 372 dev->types[0] = _DRM_STAT_LOCK; 373 dev->types[1] = _DRM_STAT_OPENS; 374 dev->types[2] = _DRM_STAT_CLOSES; 375 dev->types[3] = _DRM_STAT_IOCTLS; 376 dev->types[4] = _DRM_STAT_LOCKS; 377 dev->types[5] = _DRM_STAT_UNLOCKS; 378 379 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 380 atomic_set(&dev->counts[i], 0); 381 382 if (dev->driver->load != NULL) { 383 DRM_LOCK(); 384 /* Shared code returns -errno. */ 385 retcode = -dev->driver->load(dev, 386 dev->id_entry->driver_private); 387 if (pci_enable_busmaster(dev->device)) 388 DRM_ERROR("Request to enable bus-master failed.\n"); 389 DRM_UNLOCK(); 390 if (retcode != 0) 391 goto error; 392 } 393 394 if (drm_core_has_AGP(dev)) { 395 if (drm_device_is_agp(dev)) 396 dev->agp = drm_agp_init(); 397 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 398 dev->agp == NULL) { 399 DRM_ERROR("Card isn't AGP, or couldn't initialize " 400 "AGP.\n"); 401 retcode = ENOMEM; 402 goto error; 403 } 404 if (dev->agp != NULL) { 405 if (drm_mtrr_add(dev->agp->info.ai_aperture_base, 406 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0) 407 dev->agp->mtrr = 1; 408 } 409 } 410 411 retcode = drm_ctxbitmap_init(dev); 412 if (retcode != 0) { 413 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 414 goto error; 415 } 416 417 dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL); 418 if (dev->drw_unrhdr == NULL) { 419 DRM_ERROR("Couldn't allocate drawable number allocator\n"); 420 goto error; 421 } 422 423 DRM_INFO("Initialized %s %d.%d.%d %s\n", 424 dev->driver->name, 425 dev->driver->major, 426 dev->driver->minor, 427 dev->driver->patchlevel, 428 dev->driver->date); 429 430 return 0; 431 432error: 433 drm_sysctl_cleanup(dev); 434 DRM_LOCK(); 435 drm_lastclose(dev); 436 DRM_UNLOCK(); 437 destroy_dev(dev->devnode); 438 439 mtx_destroy(&dev->tsk_lock); 440 mtx_destroy(&dev->drw_lock); 441 mtx_destroy(&dev->vbl_lock); 442 mtx_destroy(&dev->irq_lock); 443 mtx_destroy(&dev->dev_lock); 444 445 return retcode; 446} 447 448static void drm_unload(struct drm_device *dev) 449{ 450 int i; 451 452 DRM_DEBUG("\n"); 453 454 drm_sysctl_cleanup(dev); 455 destroy_dev(dev->devnode); 456 457 drm_ctxbitmap_cleanup(dev); 458 459 if (dev->agp && dev->agp->mtrr) { 460 int __unused retcode; 461 462 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, 463 dev->agp->info.ai_aperture_size, DRM_MTRR_WC); 464 DRM_DEBUG("mtrr_del = %d", retcode); 465 } 466 467 DRM_LOCK(); 468 drm_lastclose(dev); 469 DRM_UNLOCK(); 470 471 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 472 * worried about resource consumption while the DRM is inactive (between 473 * lastclose and firstopen or unload) because these aren't actually 474 * taking up KVA, just keeping the PCI resource allocated. 475 */ 476 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 477 if (dev->pcir[i] == NULL) 478 continue; 479 bus_release_resource(dev->device, SYS_RES_MEMORY, 480 dev->pcirid[i], dev->pcir[i]); 481 dev->pcir[i] = NULL; 482 } 483 484 if (dev->agp) { 485 free(dev->agp, DRM_MEM_AGPLISTS); 486 dev->agp = NULL; 487 } 488 489 if (dev->driver->unload != NULL) { 490 DRM_LOCK(); 491 dev->driver->unload(dev); 492 DRM_UNLOCK(); 493 } 494 495 delete_unrhdr(dev->drw_unrhdr); 496 497 drm_mem_uninit(); 498 499 if (pci_disable_busmaster(dev->device)) 500 DRM_ERROR("Request to disable bus-master failed.\n"); 501 502 mtx_destroy(&dev->tsk_lock); 503 mtx_destroy(&dev->drw_lock); 504 mtx_destroy(&dev->vbl_lock); 505 mtx_destroy(&dev->irq_lock); 506 mtx_destroy(&dev->dev_lock); 507} 508 509 510int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 511{ 512 struct drm_version *version = data; 513 int len; 514 515#define DRM_COPY( name, value ) \ 516 len = strlen( value ); \ 517 if ( len > name##_len ) len = name##_len; \ 518 name##_len = strlen( value ); \ 519 if ( len && name ) { \ 520 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 521 return EFAULT; \ 522 } 523 524 version->version_major = dev->driver->major; 525 version->version_minor = dev->driver->minor; 526 version->version_patchlevel = dev->driver->patchlevel; 527 528 DRM_COPY(version->name, dev->driver->name); 529 DRM_COPY(version->date, dev->driver->date); 530 DRM_COPY(version->desc, dev->driver->desc); 531 532 return 0; 533} 534 535int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p) 536{ 537 struct drm_device *dev = NULL; 538 int retcode = 0; 539 540 dev = DRIVER_SOFTC(dev2unit(kdev)); 541 542 DRM_DEBUG("open_count = %d\n", dev->open_count); 543 544 retcode = drm_open_helper(kdev, flags, fmt, p, dev); 545 546 if (!retcode) { 547 atomic_inc(&dev->counts[_DRM_STAT_OPENS]); 548 DRM_LOCK(); 549 device_busy(dev->device); 550 if (!dev->open_count++) 551 retcode = drm_firstopen(dev); 552 DRM_UNLOCK(); 553 } 554 555 return retcode; 556} 557 558void drm_close(void *data) 559{ 560 struct drm_file *file_priv = data; 561 struct drm_device *dev = file_priv->dev; 562 int retcode = 0; 563 564 DRM_DEBUG("open_count = %d\n", dev->open_count); 565 566 DRM_LOCK(); 567 568 if (dev->driver->preclose != NULL) 569 dev->driver->preclose(dev, file_priv); 570 571 /* ======================================================== 572 * Begin inline drm_release 573 */ 574 575 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 576 DRM_CURRENTPID, (long)dev->device, dev->open_count); 577 578 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 579 && dev->lock.file_priv == file_priv) { 580 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 581 DRM_CURRENTPID, 582 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 583 if (dev->driver->reclaim_buffers_locked != NULL) 584 dev->driver->reclaim_buffers_locked(dev, file_priv); 585 586 drm_lock_free(&dev->lock, 587 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 588 589 /* FIXME: may require heavy-handed reset of 590 hardware at this point, possibly 591 processed via a callback to the X 592 server. */ 593 } else if (dev->driver->reclaim_buffers_locked != NULL && 594 dev->lock.hw_lock != NULL) { 595 /* The lock is required to reclaim buffers */ 596 for (;;) { 597 if (!dev->lock.hw_lock) { 598 /* Device has been unregistered */ 599 retcode = EINTR; 600 break; 601 } 602 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 603 dev->lock.file_priv = file_priv; 604 dev->lock.lock_time = jiffies; 605 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 606 break; /* Got lock */ 607 } 608 /* Contention */ 609 retcode = mtx_sleep((void *)&dev->lock.lock_queue, 610 &dev->dev_lock, PZERO | PCATCH, "drmlk2", 0); 611 if (retcode) 612 break; 613 } 614 if (retcode == 0) { 615 dev->driver->reclaim_buffers_locked(dev, file_priv); 616 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 617 } 618 } 619 620 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 621 !dev->driver->reclaim_buffers_locked) 622 drm_reclaim_buffers(dev, file_priv); 623 624 funsetown(&dev->buf_sigio); 625 626 if (dev->driver->postclose != NULL) 627 dev->driver->postclose(dev, file_priv); 628 TAILQ_REMOVE(&dev->files, file_priv, link); 629 free(file_priv, DRM_MEM_FILES); 630 631 /* ======================================================== 632 * End inline drm_release 633 */ 634 635 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 636 device_unbusy(dev->device); 637 if (--dev->open_count == 0) { 638 retcode = drm_lastclose(dev); 639 } 640 641 DRM_UNLOCK(); 642} 643 644/* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 645 */ 646int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags, 647 DRM_STRUCTPROC *p) 648{ 649 struct drm_device *dev = drm_get_device_from_kdev(kdev); 650 int retcode = 0; 651 drm_ioctl_desc_t *ioctl; 652 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 653 int nr = DRM_IOCTL_NR(cmd); 654 int is_driver_ioctl = 0; 655 struct drm_file *file_priv; 656 657 DRM_LOCK(); 658 retcode = devfs_get_cdevpriv((void **)&file_priv); 659 DRM_UNLOCK(); 660 if (retcode != 0) { 661 DRM_ERROR("can't find authenticator\n"); 662 return EINVAL; 663 } 664 665 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 666 ++file_priv->ioctl_count; 667 668 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 669 DRM_CURRENTPID, cmd, nr, (long)dev->device, 670 file_priv->authenticated); 671 672 switch (cmd) { 673 case FIONBIO: 674 case FIOASYNC: 675 return 0; 676 677 case FIOSETOWN: 678 return fsetown(*(int *)data, &dev->buf_sigio); 679 680 case FIOGETOWN: 681 *(int *) data = fgetown(&dev->buf_sigio); 682 return 0; 683 } 684 685 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 686 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 687 return EINVAL; 688 } 689 690 ioctl = &drm_ioctls[nr]; 691 /* It's not a core DRM ioctl, try driver-specific. */ 692 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 693 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 694 nr -= DRM_COMMAND_BASE; 695 if (nr > dev->driver->max_ioctl) { 696 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 697 nr, dev->driver->max_ioctl); 698 return EINVAL; 699 } 700 ioctl = &dev->driver->ioctls[nr]; 701 is_driver_ioctl = 1; 702 } 703 func = ioctl->func; 704 705 if (func == NULL) { 706 DRM_DEBUG("no function\n"); 707 return EINVAL; 708 } 709 710 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 711 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 712 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 713 return EACCES; 714 715 if (is_driver_ioctl) { 716 DRM_LOCK(); 717 /* shared code returns -errno */ 718 retcode = -func(dev, data, file_priv); 719 DRM_UNLOCK(); 720 } else { 721 retcode = func(dev, data, file_priv); 722 } 723 724 if (retcode != 0) 725 DRM_DEBUG(" returning %d\n", retcode); 726 727 return retcode; 728} 729 730drm_local_map_t *drm_getsarea(struct drm_device *dev) 731{ 732 drm_local_map_t *map; 733 734 DRM_SPINLOCK_ASSERT(&dev->dev_lock); 735 TAILQ_FOREACH(map, &dev->maplist, link) { 736 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK)) 737 return map; 738 } 739 740 return NULL; 741} 742 743#if DRM_LINUX 744 745#include <sys/sysproto.h> 746 747MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 748 749#define LINUX_IOCTL_DRM_MIN 0x6400 750#define LINUX_IOCTL_DRM_MAX 0x64ff 751 752static linux_ioctl_function_t drm_linux_ioctl; 753static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 754 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 755 756SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 757 linux_ioctl_register_handler, &drm_handler); 758SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 759 linux_ioctl_unregister_handler, &drm_handler); 760 761/* The bits for in/out are switched on Linux */ 762#define LINUX_IOC_IN IOC_OUT 763#define LINUX_IOC_OUT IOC_IN 764 765static int 766drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 767{ 768 int error; 769 int cmd = args->cmd; 770 771 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 772 if (cmd & LINUX_IOC_IN) 773 args->cmd |= IOC_IN; 774 if (cmd & LINUX_IOC_OUT) 775 args->cmd |= IOC_OUT; 776 777 error = ioctl(p, (struct ioctl_args *)args); 778 779 return error; 780} 781#endif /* DRM_LINUX */ 782