1 /** 2 * \file drm_stub.h 3 * Stub support 4 * 5 * \author Rickard E. (Rik) Faith <faith@valinux.com> 6 */ 7 8 /* 9 * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org 10 * 11 * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California. 12 * All Rights Reserved. 13 * 14 * Permission is hereby granted, free of charge, to any person obtaining a 15 * copy of this software and associated documentation files (the "Software"), 16 * to deal in the Software without restriction, including without limitation 17 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 18 * and/or sell copies of the Software, and to permit persons to whom the 19 * Software is furnished to do so, subject to the following conditions: 20 * 21 * The above copyright notice and this permission notice (including the next 22 * paragraph) shall be included in all copies or substantial portions of the 23 * Software. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 26 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 27 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 28 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 29 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 30 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 31 * DEALINGS IN THE SOFTWARE. 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <dev/drm2/drmP.h> 38 #include <dev/drm2/drm_core.h> 39 40 #ifdef DRM_DEBUG_DEFAULT_ON 41 unsigned int drm_debug = (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | 42 DRM_DEBUGBITS_FAILED_IOCTL); 43 #else 44 unsigned int drm_debug = 0; /* 1 to enable debug output */ 45 #endif 46 EXPORT_SYMBOL(drm_debug); 47 48 unsigned int drm_notyet = 0; 49 50 unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ 51 EXPORT_SYMBOL(drm_vblank_offdelay); 52 53 unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ 54 EXPORT_SYMBOL(drm_timestamp_precision); 55 56 /* 57 * Default to use monotonic timestamps for wait-for-vblank and page-flip 58 * complete events. 59 */ 60 unsigned int drm_timestamp_monotonic = 1; 61 62 MODULE_AUTHOR(CORE_AUTHOR); 63 MODULE_DESCRIPTION(CORE_DESC); 64 MODULE_LICENSE("GPL and additional rights"); 65 MODULE_PARM_DESC(debug, "Enable debug output"); 66 MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]"); 67 MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]"); 68 MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps"); 69 70 module_param_named(debug, drm_debug, int, 0600); 71 module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600); 72 module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600); 73 module_param_named(timestamp_monotonic, drm_timestamp_monotonic, int, 0600); 74 75 static struct cdevsw drm_cdevsw = { 76 .d_version = D_VERSION, 77 .d_open = drm_open, 78 .d_read = drm_read, 79 .d_ioctl = drm_ioctl, 80 .d_poll = drm_poll, 81 .d_mmap_single = drm_mmap_single, 82 .d_name = "drm", 83 .d_flags = D_TRACKCLOSE 84 }; 85 86 static int drm_minor_get_id(struct drm_device *dev, int type) 87 { 88 int new_id; 89 90 new_id = device_get_unit(dev->dev); 91 92 if (new_id >= 64) 93 return -EINVAL; 94 95 if (type == DRM_MINOR_CONTROL) { 96 new_id += 64; 97 } else if (type == DRM_MINOR_RENDER) { 98 new_id += 128; 99 } 100 101 return new_id; 102 } 103 104 struct drm_master *drm_master_create(struct drm_minor *minor) 105 { 106 struct drm_master *master; 107 108 master = malloc(sizeof(*master), DRM_MEM_KMS, M_NOWAIT | M_ZERO); 109 if (!master) 110 return NULL; 111 112 refcount_init(&master->refcount, 1); 113 mtx_init(&master->lock.spinlock, "drm_master__lock__spinlock", 114 NULL, MTX_DEF); 115 DRM_INIT_WAITQUEUE(&master->lock.lock_queue); 116 drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER); 117 INIT_LIST_HEAD(&master->magicfree); 118 master->minor = minor; 119 120 list_add_tail(&master->head, &minor->master_list); 121 122 return master; 123 } 124 125 struct drm_master *drm_master_get(struct drm_master *master) 126 { 127 refcount_acquire(&master->refcount); 128 return master; 129 } 130 EXPORT_SYMBOL(drm_master_get); 131 132 static void drm_master_destroy(struct drm_master *master) 133 { 134 struct drm_magic_entry *pt, *next; 135 struct drm_device *dev = master->minor->dev; 136 struct drm_map_list *r_list, *list_temp; 137 138 list_del(&master->head); 139 140 if (dev->driver->master_destroy) 141 dev->driver->master_destroy(dev, master); 142 143 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) { 144 if (r_list->master == master) { 145 drm_rmmap_locked(dev, r_list->map); 146 r_list = NULL; 147 } 148 } 149 150 if (master->unique) { 151 free(master->unique, DRM_MEM_DRIVER); 152 master->unique = NULL; 153 master->unique_len = 0; 154 } 155 156 list_for_each_entry_safe(pt, next, &master->magicfree, head) { 157 list_del(&pt->head); 158 drm_ht_remove_item(&master->magiclist, &pt->hash_item); 159 free(pt, DRM_MEM_MAGIC); 160 } 161 162 drm_ht_remove(&master->magiclist); 163 164 free(master, DRM_MEM_KMS); 165 } 166 167 void drm_master_put(struct drm_master **master) 168 { 169 if (refcount_release(&(*master)->refcount)) 170 drm_master_destroy(*master); 171 *master = NULL; 172 } 173 EXPORT_SYMBOL(drm_master_put); 174 175 int drm_setmaster_ioctl(struct drm_device *dev, void *data, 176 struct drm_file *file_priv) 177 { 178 int ret; 179 180 if (file_priv->is_master) 181 return 0; 182 183 if (file_priv->minor->master && file_priv->minor->master != file_priv->master) 184 return -EINVAL; 185 186 if (!file_priv->master) 187 return -EINVAL; 188 189 if (file_priv->minor->master) 190 return -EINVAL; 191 192 DRM_LOCK(dev); 193 file_priv->minor->master = drm_master_get(file_priv->master); 194 file_priv->is_master = 1; 195 if (dev->driver->master_set) { 196 ret = dev->driver->master_set(dev, file_priv, false); 197 if (unlikely(ret != 0)) { 198 file_priv->is_master = 0; 199 drm_master_put(&file_priv->minor->master); 200 } 201 } 202 DRM_UNLOCK(dev); 203 204 return 0; 205 } 206 207 int drm_dropmaster_ioctl(struct drm_device *dev, void *data, 208 struct drm_file *file_priv) 209 { 210 if (!file_priv->is_master) 211 return -EINVAL; 212 213 if (!file_priv->minor->master) 214 return -EINVAL; 215 216 DRM_LOCK(dev); 217 if (dev->driver->master_drop) 218 dev->driver->master_drop(dev, file_priv, false); 219 drm_master_put(&file_priv->minor->master); 220 file_priv->is_master = 0; 221 DRM_UNLOCK(dev); 222 return 0; 223 } 224 225 int drm_fill_in_dev(struct drm_device *dev, 226 struct drm_driver *driver) 227 { 228 int retcode, i; 229 230 INIT_LIST_HEAD(&dev->filelist); 231 INIT_LIST_HEAD(&dev->ctxlist); 232 INIT_LIST_HEAD(&dev->maplist); 233 INIT_LIST_HEAD(&dev->vblank_event_list); 234 235 mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF); 236 mtx_init(&dev->count_lock, "drmcount", NULL, MTX_DEF); 237 mtx_init(&dev->event_lock, "drmev", NULL, MTX_DEF); 238 sx_init(&dev->dev_struct_lock, "drmslk"); 239 mtx_init(&dev->ctxlist_mutex, "drmctxlist", NULL, MTX_DEF); 240 mtx_init(&dev->pcir_lock, "drmpcir", NULL, MTX_DEF); 241 242 if (drm_ht_create(&dev->map_hash, 12)) { 243 return -ENOMEM; 244 } 245 246 /* the DRM has 6 basic counters */ 247 dev->counters = 6; 248 dev->types[0] = _DRM_STAT_LOCK; 249 dev->types[1] = _DRM_STAT_OPENS; 250 dev->types[2] = _DRM_STAT_CLOSES; 251 dev->types[3] = _DRM_STAT_IOCTLS; 252 dev->types[4] = _DRM_STAT_LOCKS; 253 dev->types[5] = _DRM_STAT_UNLOCKS; 254 255 /* 256 * FIXME Linux<->FreeBSD: this is done in drm_setup() on Linux. 257 */ 258 for (i = 0; i < ARRAY_SIZE(dev->counts); i++) 259 atomic_set(&dev->counts[i], 0); 260 261 dev->driver = driver; 262 263 retcode = drm_pci_agp_init(dev); 264 if (retcode) 265 goto error_out_unreg; 266 267 268 269 retcode = drm_ctxbitmap_init(dev); 270 if (retcode) { 271 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 272 goto error_out_unreg; 273 } 274 275 if (driver->driver_features & DRIVER_GEM) { 276 retcode = drm_gem_init(dev); 277 if (retcode) { 278 DRM_ERROR("Cannot initialize graphics execution " 279 "manager (GEM)\n"); 280 goto error_out_unreg; 281 } 282 } 283 284 retcode = drm_sysctl_init(dev); 285 if (retcode != 0) { 286 DRM_ERROR("Failed to create hw.dri sysctl entry: %d\n", 287 retcode); 288 } 289 290 return 0; 291 292 error_out_unreg: 293 drm_cancel_fill_in_dev(dev); 294 return retcode; 295 } 296 EXPORT_SYMBOL(drm_fill_in_dev); 297 298 void drm_cancel_fill_in_dev(struct drm_device *dev) 299 { 300 struct drm_driver *driver; 301 302 driver = dev->driver; 303 304 drm_sysctl_cleanup(dev); 305 if (driver->driver_features & DRIVER_GEM) 306 drm_gem_destroy(dev); 307 drm_ctxbitmap_cleanup(dev); 308 309 if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && 310 dev->agp && dev->agp->agp_mtrr >= 0) { 311 int retval; 312 retval = drm_mtrr_del(dev->agp->agp_mtrr, 313 dev->agp->agp_info.ai_aperture_base, 314 dev->agp->agp_info.ai_aperture_size, 315 DRM_MTRR_WC); 316 DRM_DEBUG("mtrr_del=%d\n", retval); 317 } 318 free(dev->agp, DRM_MEM_AGPLISTS); 319 dev->agp = NULL; 320 321 drm_ht_remove(&dev->map_hash); 322 323 mtx_destroy(&dev->irq_lock); 324 mtx_destroy(&dev->count_lock); 325 mtx_destroy(&dev->event_lock); 326 sx_destroy(&dev->dev_struct_lock); 327 mtx_destroy(&dev->ctxlist_mutex); 328 mtx_destroy(&dev->pcir_lock); 329 } 330 331 /** 332 * Get a secondary minor number. 333 * 334 * \param dev device data structure 335 * \param sec-minor structure to hold the assigned minor 336 * \return negative number on failure. 337 * 338 * Search an empty entry and initialize it to the given parameters, and 339 * create the proc init entry via proc_init(). This routines assigns 340 * minor numbers to secondary heads of multi-headed cards 341 */ 342 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type) 343 { 344 struct drm_minor *new_minor; 345 int ret; 346 int minor_id; 347 const char *minor_devname; 348 349 DRM_DEBUG("\n"); 350 351 minor_id = drm_minor_get_id(dev, type); 352 if (minor_id < 0) 353 return minor_id; 354 355 new_minor = malloc(sizeof(struct drm_minor), DRM_MEM_MINOR, 356 M_NOWAIT | M_ZERO); 357 if (!new_minor) { 358 ret = -ENOMEM; 359 goto err_idr; 360 } 361 362 new_minor->type = type; 363 new_minor->dev = dev; 364 new_minor->index = minor_id; 365 INIT_LIST_HEAD(&new_minor->master_list); 366 367 new_minor->buf_sigio = NULL; 368 369 switch (type) { 370 case DRM_MINOR_CONTROL: 371 minor_devname = "dri/controlD%d"; 372 break; 373 case DRM_MINOR_RENDER: 374 minor_devname = "dri/renderD%d"; 375 break; 376 default: 377 minor_devname = "dri/card%d"; 378 break; 379 } 380 381 ret = make_dev_p(MAKEDEV_WAITOK | MAKEDEV_CHECKNAME, &new_minor->device, 382 &drm_cdevsw, 0, DRM_DEV_UID, DRM_DEV_GID, 383 DRM_DEV_MODE, minor_devname, minor_id); 384 if (ret) { 385 DRM_ERROR("Failed to create cdev: %d\n", ret); 386 goto err_mem; 387 } 388 new_minor->device->si_drv1 = new_minor; 389 *minor = new_minor; 390 391 DRM_DEBUG("new minor assigned %d\n", minor_id); 392 return 0; 393 394 395 err_mem: 396 free(new_minor, DRM_MEM_MINOR); 397 err_idr: 398 *minor = NULL; 399 return ret; 400 } 401 EXPORT_SYMBOL(drm_get_minor); 402 403 /** 404 * Put a secondary minor number. 405 * 406 * \param sec_minor - structure to be released 407 * \return always zero 408 * 409 * Cleans up the proc resources. Not legal for this to be the 410 * last minor released. 411 * 412 */ 413 int drm_put_minor(struct drm_minor **minor_p) 414 { 415 struct drm_minor *minor = *minor_p; 416 417 DRM_DEBUG("release secondary minor %d\n", minor->index); 418 419 funsetown(&minor->buf_sigio); 420 421 destroy_dev(minor->device); 422 423 free(minor, DRM_MEM_MINOR); 424 *minor_p = NULL; 425 return 0; 426 } 427 EXPORT_SYMBOL(drm_put_minor); 428 429 /** 430 * Called via drm_exit() at module unload time or when pci device is 431 * unplugged. 432 * 433 * Cleans up all DRM device, calling drm_lastclose(). 434 * 435 */ 436 void drm_put_dev(struct drm_device *dev) 437 { 438 struct drm_driver *driver; 439 struct drm_map_list *r_list, *list_temp; 440 441 DRM_DEBUG("\n"); 442 443 if (!dev) { 444 DRM_ERROR("cleanup called no dev\n"); 445 return; 446 } 447 driver = dev->driver; 448 449 drm_lastclose(dev); 450 451 if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && 452 dev->agp && dev->agp->agp_mtrr >= 0) { 453 int retval; 454 retval = drm_mtrr_del(dev->agp->agp_mtrr, 455 dev->agp->agp_info.ai_aperture_base, 456 dev->agp->agp_info.ai_aperture_size, 457 DRM_MTRR_WC); 458 DRM_DEBUG("mtrr_del=%d\n", retval); 459 } 460 461 if (drm_core_check_feature(dev, DRIVER_MODESET)) 462 drm_mode_group_free(&dev->primary->mode_group); 463 464 if (dev->driver->unload) 465 dev->driver->unload(dev); 466 467 drm_sysctl_cleanup(dev); 468 469 if (drm_core_has_AGP(dev) && dev->agp) { 470 free(dev->agp, DRM_MEM_AGPLISTS); 471 dev->agp = NULL; 472 } 473 474 drm_vblank_cleanup(dev); 475 476 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) 477 drm_rmmap(dev, r_list->map); 478 drm_ht_remove(&dev->map_hash); 479 480 drm_ctxbitmap_cleanup(dev); 481 482 if (drm_core_check_feature(dev, DRIVER_MODESET)) 483 drm_put_minor(&dev->control); 484 485 if (driver->driver_features & DRIVER_GEM) 486 drm_gem_destroy(dev); 487 488 drm_put_minor(&dev->primary); 489 490 mtx_destroy(&dev->irq_lock); 491 mtx_destroy(&dev->count_lock); 492 mtx_destroy(&dev->event_lock); 493 sx_destroy(&dev->dev_struct_lock); 494 mtx_destroy(&dev->ctxlist_mutex); 495 mtx_destroy(&dev->pcir_lock); 496 497 #ifdef FREEBSD_NOTYET 498 list_del(&dev->driver_item); 499 #endif /* FREEBSD_NOTYET */ 500 } 501 EXPORT_SYMBOL(drm_put_dev); 502