sys/dev/drm2/drm_stub.c

   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);