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 #include <linux/slab.h> 40 41 #ifdef DRM_DEBUG_DEFAULT_ON 42 unsigned int drm_debug = (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | 43 DRM_DEBUGBITS_FAILED_IOCTL); 44 #else 45 unsigned int drm_debug = 0; /* 1 to enable debug output */ 46 #endif 47 EXPORT_SYMBOL(drm_debug); 48 49 unsigned int drm_notyet = 0; 50 51 unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ 52 EXPORT_SYMBOL(drm_vblank_offdelay); 53 54 unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ 55 EXPORT_SYMBOL(drm_timestamp_precision); 56 57 /* 58 * Default to use monotonic timestamps for wait-for-vblank and page-flip 59 * complete events. 60 */ 61 unsigned int drm_timestamp_monotonic = 1; 62 63 MODULE_AUTHOR(CORE_AUTHOR); 64 MODULE_DESCRIPTION(CORE_DESC); 65 MODULE_LICENSE("GPL and additional rights"); 66 MODULE_PARM_DESC(debug, "Enable debug output"); 67 MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]"); 68 MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]"); 69 MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps"); 70 71 module_param_named(debug, drm_debug, int, 0600); 72 module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600); 73 module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600); 74 module_param_named(timestamp_monotonic, drm_timestamp_monotonic, int, 0600); 75 76 static struct cdevsw drm_cdevsw = { 77 .d_version = D_VERSION, 78 .d_open = drm_open, 79 .d_read = drm_read, 80 .d_ioctl = drm_ioctl, 81 .d_poll = drm_poll, 82 .d_mmap_single = drm_mmap_single, 83 .d_name = "drm", 84 .d_flags = D_TRACKCLOSE 85 }; 86 87 static int drm_minor_get_id(struct drm_device *dev, int type) 88 { 89 int new_id; 90 91 new_id = device_get_unit(dev->dev); 92 93 if (new_id >= 64) 94 return -EINVAL; 95 96 if (type == DRM_MINOR_CONTROL) { 97 new_id += 64; 98 } else if (type == DRM_MINOR_RENDER) { 99 new_id += 128; 100 } 101 102 return new_id; 103 } 104 105 struct drm_master *drm_master_create(struct drm_minor *minor) 106 { 107 struct drm_master *master; 108 109 master = malloc(sizeof(*master), DRM_MEM_KMS, M_NOWAIT | M_ZERO); 110 if (!master) 111 return NULL; 112 113 refcount_init(&master->refcount, 1); 114 mtx_init(&master->lock.spinlock, "drm_master__lock__spinlock", 115 NULL, MTX_DEF); 116 DRM_INIT_WAITQUEUE(&master->lock.lock_queue); 117 drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER); 118 INIT_LIST_HEAD(&master->magicfree); 119 master->minor = minor; 120 121 list_add_tail(&master->head, &minor->master_list); 122 123 return master; 124 } 125 126 struct drm_master *drm_master_get(struct drm_master *master) 127 { 128 refcount_acquire(&master->refcount); 129 return master; 130 } 131 EXPORT_SYMBOL(drm_master_get); 132 133 static void drm_master_destroy(struct drm_master *master) 134 { 135 struct drm_magic_entry *pt, *next; 136 struct drm_device *dev = master->minor->dev; 137 struct drm_map_list *r_list, *list_temp; 138 139 list_del(&master->head); 140 141 if (dev->driver->master_destroy) 142 dev->driver->master_destroy(dev, master); 143 144 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) { 145 if (r_list->master == master) { 146 drm_rmmap_locked(dev, r_list->map); 147 r_list = NULL; 148 } 149 } 150 151 if (master->unique) { 152 free(master->unique, DRM_MEM_DRIVER); 153 master->unique = NULL; 154 master->unique_len = 0; 155 } 156 157 list_for_each_entry_safe(pt, next, &master->magicfree, head) { 158 list_del(&pt->head); 159 drm_ht_remove_item(&master->magiclist, &pt->hash_item); 160 free(pt, DRM_MEM_MAGIC); 161 } 162 163 drm_ht_remove(&master->magiclist); 164 165 free(master, DRM_MEM_KMS); 166 } 167 168 void drm_master_put(struct drm_master **master) 169 { 170 if (refcount_release(&(*master)->refcount)) 171 drm_master_destroy(*master); 172 *master = NULL; 173 } 174 EXPORT_SYMBOL(drm_master_put); 175 176 int drm_setmaster_ioctl(struct drm_device *dev, void *data, 177 struct drm_file *file_priv) 178 { 179 int ret; 180 181 if (file_priv->is_master) 182 return 0; 183 184 if (file_priv->minor->master && file_priv->minor->master != file_priv->master) 185 return -EINVAL; 186 187 if (!file_priv->master) 188 return -EINVAL; 189 190 if (file_priv->minor->master) 191 return -EINVAL; 192 193 DRM_LOCK(dev); 194 file_priv->minor->master = drm_master_get(file_priv->master); 195 file_priv->is_master = 1; 196 if (dev->driver->master_set) { 197 ret = dev->driver->master_set(dev, file_priv, false); 198 if (unlikely(ret != 0)) { 199 file_priv->is_master = 0; 200 drm_master_put(&file_priv->minor->master); 201 } 202 } 203 DRM_UNLOCK(dev); 204 205 return 0; 206 } 207 208 int drm_dropmaster_ioctl(struct drm_device *dev, void *data, 209 struct drm_file *file_priv) 210 { 211 if (!file_priv->is_master) 212 return -EINVAL; 213 214 if (!file_priv->minor->master) 215 return -EINVAL; 216 217 DRM_LOCK(dev); 218 if (dev->driver->master_drop) 219 dev->driver->master_drop(dev, file_priv, false); 220 drm_master_put(&file_priv->minor->master); 221 file_priv->is_master = 0; 222 DRM_UNLOCK(dev); 223 return 0; 224 } 225 226 int drm_fill_in_dev(struct drm_device *dev, 227 struct drm_driver *driver) 228 { 229 int retcode, i; 230 231 INIT_LIST_HEAD(&dev->filelist); 232 INIT_LIST_HEAD(&dev->ctxlist); 233 INIT_LIST_HEAD(&dev->maplist); 234 INIT_LIST_HEAD(&dev->vblank_event_list); 235 236 mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF); 237 mtx_init(&dev->count_lock, "drmcount", NULL, MTX_DEF); 238 mtx_init(&dev->event_lock, "drmev", NULL, MTX_DEF); 239 sx_init(&dev->dev_struct_lock, "drmslk"); 240 mtx_init(&dev->ctxlist_mutex, "drmctxlist", NULL, MTX_DEF); 241 mtx_init(&dev->pcir_lock, "drmpcir", NULL, MTX_DEF); 242 243 if (drm_ht_create(&dev->map_hash, 12)) { 244 return -ENOMEM; 245 } 246 247 /* the DRM has 6 basic counters */ 248 dev->counters = 6; 249 dev->types[0] = _DRM_STAT_LOCK; 250 dev->types[1] = _DRM_STAT_OPENS; 251 dev->types[2] = _DRM_STAT_CLOSES; 252 dev->types[3] = _DRM_STAT_IOCTLS; 253 dev->types[4] = _DRM_STAT_LOCKS; 254 dev->types[5] = _DRM_STAT_UNLOCKS; 255 256 /* 257 * FIXME Linux<->FreeBSD: this is done in drm_setup() on Linux. 258 */ 259 for (i = 0; i < ARRAY_SIZE(dev->counts); i++) 260 atomic_set(&dev->counts[i], 0); 261 262 dev->driver = driver; 263 264 retcode = drm_pci_agp_init(dev); 265 if (retcode) 266 goto error_out_unreg; 267 268 269 270 retcode = drm_ctxbitmap_init(dev); 271 if (retcode) { 272 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 273 goto error_out_unreg; 274 } 275 276 if (driver->driver_features & DRIVER_GEM) { 277 retcode = drm_gem_init(dev); 278 if (retcode) { 279 DRM_ERROR("Cannot initialize graphics execution " 280 "manager (GEM)\n"); 281 goto error_out_unreg; 282 } 283 } 284 285 retcode = drm_sysctl_init(dev); 286 if (retcode != 0) { 287 DRM_ERROR("Failed to create hw.dri sysctl entry: %d\n", 288 retcode); 289 } 290 291 return 0; 292 293 error_out_unreg: 294 drm_cancel_fill_in_dev(dev); 295 return retcode; 296 } 297 EXPORT_SYMBOL(drm_fill_in_dev); 298 299 void drm_cancel_fill_in_dev(struct drm_device *dev) 300 { 301 struct drm_driver *driver; 302 303 driver = dev->driver; 304 305 drm_sysctl_cleanup(dev); 306 if (driver->driver_features & DRIVER_GEM) 307 drm_gem_destroy(dev); 308 drm_ctxbitmap_cleanup(dev); 309 310 if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && 311 dev->agp && dev->agp->agp_mtrr >= 0) { 312 int retval; 313 retval = drm_mtrr_del(dev->agp->agp_mtrr, 314 dev->agp->agp_info.ai_aperture_base, 315 dev->agp->agp_info.ai_aperture_size, 316 DRM_MTRR_WC); 317 DRM_DEBUG("mtrr_del=%d\n", retval); 318 } 319 kfree(dev->agp); 320 dev->agp = NULL; 321 322 drm_ht_remove(&dev->map_hash); 323 324 mtx_destroy(&dev->irq_lock); 325 mtx_destroy(&dev->count_lock); 326 mtx_destroy(&dev->event_lock); 327 sx_destroy(&dev->dev_struct_lock); 328 mtx_destroy(&dev->ctxlist_mutex); 329 mtx_destroy(&dev->pcir_lock); 330 } 331 332 /** 333 * Get a secondary minor number. 334 * 335 * \param dev device data structure 336 * \param sec-minor structure to hold the assigned minor 337 * \return negative number on failure. 338 * 339 * Search an empty entry and initialize it to the given parameters, and 340 * create the proc init entry via proc_init(). This routines assigns 341 * minor numbers to secondary heads of multi-headed cards 342 */ 343 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type) 344 { 345 struct drm_minor *new_minor; 346 int ret; 347 int minor_id; 348 const char *minor_devname; 349 350 DRM_DEBUG("\n"); 351 352 minor_id = drm_minor_get_id(dev, type); 353 if (minor_id < 0) 354 return minor_id; 355 356 new_minor = malloc(sizeof(struct drm_minor), DRM_MEM_MINOR, 357 M_NOWAIT | M_ZERO); 358 if (!new_minor) { 359 ret = -ENOMEM; 360 goto err_idr; 361 } 362 363 new_minor->type = type; 364 new_minor->dev = dev; 365 new_minor->index = minor_id; 366 INIT_LIST_HEAD(&new_minor->master_list); 367 368 new_minor->buf_sigio = NULL; 369 370 switch (type) { 371 case DRM_MINOR_CONTROL: 372 minor_devname = "dri/controlD%d"; 373 break; 374 case DRM_MINOR_RENDER: 375 minor_devname = "dri/renderD%d"; 376 break; 377 default: 378 minor_devname = "dri/card%d"; 379 break; 380 } 381 382 ret = make_dev_p(MAKEDEV_WAITOK | MAKEDEV_CHECKNAME, &new_minor->device, 383 &drm_cdevsw, 0, DRM_DEV_UID, DRM_DEV_GID, 384 DRM_DEV_MODE, minor_devname, minor_id); 385 if (ret) { 386 DRM_ERROR("Failed to create cdev: %d\n", ret); 387 goto err_mem; 388 } 389 new_minor->device->si_drv1 = new_minor; 390 *minor = new_minor; 391 392 DRM_DEBUG("new minor assigned %d\n", minor_id); 393 return 0; 394 395 396 err_mem: 397 free(new_minor, DRM_MEM_MINOR); 398 err_idr: 399 *minor = NULL; 400 return ret; 401 } 402 EXPORT_SYMBOL(drm_get_minor); 403 404 /** 405 * Put a secondary minor number. 406 * 407 * \param sec_minor - structure to be released 408 * \return always zero 409 * 410 * Cleans up the proc resources. Not legal for this to be the 411 * last minor released. 412 * 413 */ 414 int drm_put_minor(struct drm_minor **minor_p) 415 { 416 struct drm_minor *minor = *minor_p; 417 418 DRM_DEBUG("release secondary minor %d\n", minor->index); 419 420 funsetown(&minor->buf_sigio); 421 422 destroy_dev(minor->device); 423 424 free(minor, DRM_MEM_MINOR); 425 *minor_p = NULL; 426 return 0; 427 } 428 EXPORT_SYMBOL(drm_put_minor); 429 430 /** 431 * Called via drm_exit() at module unload time or when pci device is 432 * unplugged. 433 * 434 * Cleans up all DRM device, calling drm_lastclose(). 435 * 436 */ 437 void drm_put_dev(struct drm_device *dev) 438 { 439 struct drm_driver *driver; 440 struct drm_map_list *r_list, *list_temp; 441 442 DRM_DEBUG("\n"); 443 444 if (!dev) { 445 DRM_ERROR("cleanup called no dev\n"); 446 return; 447 } 448 driver = dev->driver; 449 450 drm_lastclose(dev); 451 452 if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && 453 dev->agp && dev->agp->agp_mtrr >= 0) { 454 int retval; 455 retval = drm_mtrr_del(dev->agp->agp_mtrr, 456 dev->agp->agp_info.ai_aperture_base, 457 dev->agp->agp_info.ai_aperture_size, 458 DRM_MTRR_WC); 459 DRM_DEBUG("mtrr_del=%d\n", retval); 460 } 461 462 if (drm_core_check_feature(dev, DRIVER_MODESET)) 463 drm_mode_group_free(&dev->primary->mode_group); 464 465 if (dev->driver->unload) 466 dev->driver->unload(dev); 467 468 drm_sysctl_cleanup(dev); 469 470 if (drm_core_has_AGP(dev) && dev->agp) { 471 kfree(dev->agp); 472 dev->agp = NULL; 473 } 474 475 drm_vblank_cleanup(dev); 476 477 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) 478 drm_rmmap(dev, r_list->map); 479 drm_ht_remove(&dev->map_hash); 480 481 drm_ctxbitmap_cleanup(dev); 482 483 if (drm_core_check_feature(dev, DRIVER_MODESET)) 484 drm_put_minor(&dev->control); 485 486 if (driver->driver_features & DRIVER_GEM) 487 drm_gem_destroy(dev); 488 489 drm_put_minor(&dev->primary); 490 491 mtx_destroy(&dev->irq_lock); 492 mtx_destroy(&dev->count_lock); 493 mtx_destroy(&dev->event_lock); 494 sx_destroy(&dev->dev_struct_lock); 495 mtx_destroy(&dev->ctxlist_mutex); 496 mtx_destroy(&dev->pcir_lock); 497 498 #ifdef FREEBSD_NOTYET 499 list_del(&dev->driver_item); 500 #endif /* FREEBSD_NOTYET */ 501 } 502 EXPORT_SYMBOL(drm_put_dev); 503