sys/dev/drm/drm_drv.c

   1 /*-
   2  * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
   3  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rickard E. (Rik) Faith <faith@valinux.com>
  27  *    Gareth Hughes <gareth@valinux.com>
  28  *
  29  */
  30
  31 /** @file drm_drv.c
  32  * The catch-all file for DRM device support, including module setup/teardown,
  33  * open/close, and ioctl dispatch.
  34  */
  35
  36 #include <machine/limits.h>
  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(struct drm_device *dev);
  48 static void drm_unload(struct drm_device *dev);
  49 static drm_pci_id_list_t *drm_find_description(int vendor, int device,
  50     drm_pci_id_list_t *idlist);
  51
  52 #define DRIVER_SOFTC(unit) \
  53         ((struct drm_device *)devclass_get_softc(drm_devclass, unit))
  54
  55 MODULE_VERSION(drm, 1);
  56 MODULE_DEPEND(drm, agp, 1, 1, 1);
  57 MODULE_DEPEND(drm, pci, 1, 1, 1);
  58
  59 static drm_ioctl_desc_t           drm_ioctls[256] = {
  60         DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
  61         DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
  62         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
  63         DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
  64         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
  65         DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
  66         DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
  67         DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
  68
  69         DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  70         DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  71         DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  72         DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  73
  74         DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  75         DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
  76
  77         DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  78         DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
  79
  80         DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
  81         DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  82         DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  83         DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
  84         DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  85         DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  86         DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
  87
  88         DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  89         DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  90
  91         DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
  92         DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
  93
  94         DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
  95
  96         DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  97         DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  98         DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
  99         DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
 100         DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
 101         DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
 102
 103         DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 104
 105         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 106         DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 107         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 108         DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
 109         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 110         DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 111         DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 112         DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 113
 114         DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 115         DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 116         DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
 117         DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
 118         DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 119 };
 120
 121 static struct dev_ops drm_cdevsw = {
 122         { "drm", 0, D_TRACKCLOSE },
 123         .d_open =       drm_open,
 124         .d_close =      drm_close,
 125         .d_read =       drm_read,
 126         .d_ioctl =      drm_ioctl,
 127         .d_kqfilter =   drm_kqfilter,
 128         .d_mmap =       drm_mmap
 129 };
 130
 131 static int drm_msi = 1; /* Enable by default. */
 132 TUNABLE_INT("hw.drm.msi", &drm_msi);
 133
 134 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
 135         {0x8086, 0x2772}, /* Intel i945G        */ \
 136         {0x8086, 0x27A2}, /* Intel i945GM       */ \
 137         {0x8086, 0x27AE}, /* Intel i945GME      */ \
 138         {0, 0}
 139 };
 140
 141 static int drm_msi_is_blacklisted(int vendor, int device)
 142 {
 143         int i = 0;
 144
 145         for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
 146                 if ((drm_msi_blacklist[i].vendor == vendor) &&
 147                     (drm_msi_blacklist[i].device == device)) {
 148                         return 1;
 149                 }
 150         }
 151
 152         return 0;
 153 }
 154
 155 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
 156 {
 157         drm_pci_id_list_t *id_entry;
 158         int vendor, device;
 159
 160         vendor = pci_get_vendor(kdev);
 161         device = pci_get_device(kdev);
 162
 163         if (pci_get_class(kdev) != PCIC_DISPLAY
 164             || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
 165                 return ENXIO;
 166
 167         id_entry = drm_find_description(vendor, device, idlist);
 168         if (id_entry != NULL) {
 169                 if (!device_get_desc(kdev)) {
 170                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
 171                         device_set_desc(kdev, id_entry->name);
 172                 }
 173                 return 0;
 174         }
 175
 176         return ENXIO;
 177 }
 178
 179 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
 180 {
 181         struct drm_device *dev;
 182         drm_pci_id_list_t *id_entry;
 183         int unit;
 184 #if 0
 185         int msicount;
 186 #endif
 187
 188         unit = device_get_unit(kdev);
 189         dev = device_get_softc(kdev);
 190
 191         if (!strcmp(device_get_name(kdev), "drmsub"))
 192                 dev->device = device_get_parent(kdev);
 193         else
 194                 dev->device = kdev;
 195
 196         dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID,
 197                                 DRM_DEV_MODE, "dri/card%d", unit);
 198
 199         dev->pci_domain = 0;
 200         dev->pci_bus = pci_get_bus(dev->device);
 201         dev->pci_slot = pci_get_slot(dev->device);
 202         dev->pci_func = pci_get_function(dev->device);
 203
 204         dev->pci_vendor = pci_get_vendor(dev->device);
 205         dev->pci_device = pci_get_device(dev->device);
 206
 207         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
 208                 if (drm_msi &&
 209                     !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
 210 #if 0
 211                         msicount = pci_msi_count(dev->device);
 212                         DRM_DEBUG("MSI count = %d\n", msicount);
 213                         if (msicount > 1)
 214                                 msicount = 1;
 215
 216                         if (pci_alloc_msi(dev->device, &msicount) == 0) {
 217                                 DRM_INFO("MSI enabled %d message(s)\n",
 218                                     msicount);
 219                                 dev->msi_enabled = 1;
 220                                 dev->irqrid = 1;
 221                         }
 222 #endif
 223                 }
 224
 225                 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
 226                     &dev->irqrid, RF_SHAREABLE);
 227                 if (!dev->irqr) {
 228                         return ENOENT;
 229                 }
 230
 231                 dev->irq = (int) rman_get_start(dev->irqr);
 232         }
 233
 234         DRM_SPININIT(&dev->dev_lock, "drmdev");
 235         lwkt_serialize_init(&dev->irq_lock);
 236         DRM_SPININIT(&dev->vbl_lock, "drmvbl");
 237         DRM_SPININIT(&dev->drw_lock, "drmdrw");
 238
 239         id_entry = drm_find_description(dev->pci_vendor,
 240             dev->pci_device, idlist);
 241         dev->id_entry = id_entry;
 242
 243         return drm_load(dev);
 244 }
 245
 246 int drm_detach(device_t kdev)
 247 {
 248         struct drm_device *dev;
 249
 250         dev = device_get_softc(kdev);
 251
 252         drm_unload(dev);
 253
 254         if (dev->irqr) {
 255                 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid,
 256                     dev->irqr);
 257
 258 #if 0
 259                 if (dev->msi_enabled) {
 260                         pci_release_msi(dev->device);
 261                         DRM_INFO("MSI released\n");
 262                 }
 263 #endif
 264         }
 265
 266         return 0;
 267 }
 268
 269 #ifndef DRM_DEV_NAME
 270 #define DRM_DEV_NAME "drm"
 271 #endif
 272
 273 devclass_t drm_devclass;
 274
 275 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 276     drm_pci_id_list_t *idlist)
 277 {
 278         int i = 0;
 279
 280         for (i = 0; idlist[i].vendor != 0; i++) {
 281                 if ((idlist[i].vendor == vendor) &&
 282                     ((idlist[i].device == device) ||
 283                     (idlist[i].device == 0))) {
 284                         return &idlist[i];
 285                 }
 286         }
 287         return NULL;
 288 }
 289
 290 static int drm_firstopen(struct drm_device *dev)
 291 {
 292         drm_local_map_t *map;
 293         int i;
 294
 295         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 296
 297         /* prebuild the SAREA */
 298         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
 299             _DRM_CONTAINS_LOCK, &map);
 300         if (i != 0)
 301                 return i;
 302
 303         if (dev->driver->firstopen)
 304                 dev->driver->firstopen(dev);
 305
 306         dev->buf_use = 0;
 307
 308         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
 309                 i = drm_dma_setup(dev);
 310                 if (i != 0)
 311                         return i;
 312         }
 313
 314         for (i = 0; i < DRM_HASH_SIZE; i++) {
 315                 dev->magiclist[i].head = NULL;
 316                 dev->magiclist[i].tail = NULL;
 317         }
 318
 319         dev->lock.lock_queue = 0;
 320         dev->irq_enabled = 0;
 321         dev->context_flag = 0;
 322         dev->last_context = 0;
 323         dev->if_version = 0;
 324
 325         dev->buf_sigio = NULL;
 326
 327         DRM_DEBUG("\n");
 328
 329         return 0;
 330 }
 331
 332 static int drm_lastclose(struct drm_device *dev)
 333 {
 334         drm_magic_entry_t *pt, *next;
 335         drm_local_map_t *map, *mapsave;
 336         int i;
 337
 338         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 339
 340         DRM_DEBUG("\n");
 341
 342         if (dev->driver->lastclose != NULL)
 343                 dev->driver->lastclose(dev);
 344
 345         if (dev->irq_enabled)
 346                 drm_irq_uninstall(dev);
 347
 348         if (dev->unique) {
 349                 free(dev->unique, DRM_MEM_DRIVER);
 350                 dev->unique = NULL;
 351                 dev->unique_len = 0;
 352         }
 353         /* Clear pid list */
 354         for (i = 0; i < DRM_HASH_SIZE; i++) {
 355                 for (pt = dev->magiclist[i].head; pt; pt = next) {
 356                         next = pt->next;
 357                         free(pt, DRM_MEM_MAGIC);
 358                 }
 359                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 360         }
 361
 362         DRM_UNLOCK();
 363         drm_drawable_free_all(dev);
 364         DRM_LOCK();
 365
 366         /* Clear AGP information */
 367         if (dev->agp) {
 368                 drm_agp_mem_t *entry;
 369                 drm_agp_mem_t *nexte;
 370
 371                 /* Remove AGP resources, but leave dev->agp intact until
 372                  * drm_unload is called.
 373                  */
 374                 for (entry = dev->agp->memory; entry; entry = nexte) {
 375                         nexte = entry->next;
 376                         if (entry->bound)
 377                                 drm_agp_unbind_memory(entry->handle);
 378                         drm_agp_free_memory(entry->handle);
 379                         free(entry, DRM_MEM_AGPLISTS);
 380                 }
 381                 dev->agp->memory = NULL;
 382
 383                 if (dev->agp->acquired)
 384                         drm_agp_release(dev);
 385
 386                 dev->agp->acquired = 0;
 387                 dev->agp->enabled  = 0;
 388         }
 389         if (dev->sg != NULL) {
 390                 drm_sg_cleanup(dev->sg);
 391                 dev->sg = NULL;
 392         }
 393
 394         TAILQ_FOREACH_MUTABLE(map, &dev->maplist, link, mapsave) {
 395                 if (!(map->flags & _DRM_DRIVER))
 396                         drm_rmmap(dev, map);
 397         }
 398
 399         drm_dma_takedown(dev);
 400         if (dev->lock.hw_lock) {
 401                 dev->lock.hw_lock = NULL; /* SHM removed */
 402                 dev->lock.file_priv = NULL;
 403                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 404         }
 405
 406         return 0;
 407 }
 408
 409 static int drm_load(struct drm_device *dev)
 410 {
 411         int i, retcode;
 412
 413         DRM_DEBUG("\n");
 414
 415         TAILQ_INIT(&dev->maplist);
 416
 417         drm_mem_init();
 418         drm_sysctl_init(dev);
 419         TAILQ_INIT(&dev->files);
 420
 421         dev->counters  = 6;
 422         dev->types[0]  = _DRM_STAT_LOCK;
 423         dev->types[1]  = _DRM_STAT_OPENS;
 424         dev->types[2]  = _DRM_STAT_CLOSES;
 425         dev->types[3]  = _DRM_STAT_IOCTLS;
 426         dev->types[4]  = _DRM_STAT_LOCKS;
 427         dev->types[5]  = _DRM_STAT_UNLOCKS;
 428
 429         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 430                 atomic_set(&dev->counts[i], 0);
 431
 432         if (dev->driver->load != NULL) {
 433                 DRM_LOCK();
 434                 /* Shared code returns -errno. */
 435                 retcode = -dev->driver->load(dev,
 436                     dev->id_entry->driver_private);
 437                 pci_enable_busmaster(dev->device);
 438                 DRM_UNLOCK();
 439                 if (retcode != 0)
 440                         goto error;
 441         }
 442
 443         if (drm_core_has_AGP(dev)) {
 444                 if (drm_device_is_agp(dev))
 445                         dev->agp = drm_agp_init();
 446                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 447                     dev->agp == NULL) {
 448                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 449                             "AGP.\n");
 450                         retcode = ENOMEM;
 451                         goto error;
 452                 }
 453                 if (dev->agp != NULL) {
 454                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
 455                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
 456                                 dev->agp->mtrr = 1;
 457                 }
 458         }
 459
 460         retcode = drm_ctxbitmap_init(dev);
 461         if (retcode != 0) {
 462                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 463                 goto error;
 464         }
 465
 466         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 467             dev->driver->name,
 468             dev->driver->major,
 469             dev->driver->minor,
 470             dev->driver->patchlevel,
 471             dev->driver->date);
 472
 473         return 0;
 474
 475 error:
 476         drm_sysctl_cleanup(dev);
 477         DRM_LOCK();
 478         drm_lastclose(dev);
 479         DRM_UNLOCK();
 480         destroy_dev(dev->devnode);
 481
 482         DRM_SPINUNINIT(&dev->drw_lock);
 483         DRM_SPINUNINIT(&dev->vbl_lock);
 484         DRM_SPINUNINIT(&dev->dev_lock);
 485
 486         return retcode;
 487 }
 488
 489 static void drm_unload(struct drm_device *dev)
 490 {
 491         int i;
 492
 493         DRM_DEBUG("\n");
 494
 495         drm_sysctl_cleanup(dev);
 496         destroy_dev(dev->devnode);
 497
 498         drm_ctxbitmap_cleanup(dev);
 499
 500         if (dev->agp && dev->agp->mtrr) {
 501                 int retcode;
 502
 503                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
 504                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
 505                 DRM_DEBUG("mtrr_del = %d", retcode);
 506         }
 507
 508         drm_vblank_cleanup(dev);
 509
 510         DRM_LOCK();
 511         drm_lastclose(dev);
 512         DRM_UNLOCK();
 513
 514         /* Clean up PCI resources allocated by drm_bufs.c.  We're not really
 515          * worried about resource consumption while the DRM is inactive (between
 516          * lastclose and firstopen or unload) because these aren't actually
 517          * taking up KVA, just keeping the PCI resource allocated.
 518          */
 519         for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
 520                 if (dev->pcir[i] == NULL)
 521                         continue;
 522                 bus_release_resource(dev->device, SYS_RES_MEMORY,
 523                     dev->pcirid[i], dev->pcir[i]);
 524                 dev->pcir[i] = NULL;
 525         }
 526
 527         if (dev->agp) {
 528                 free(dev->agp, DRM_MEM_AGPLISTS);
 529                 dev->agp = NULL;
 530         }
 531
 532         if (dev->driver->unload != NULL) {
 533                 DRM_LOCK();
 534                 dev->driver->unload(dev);
 535                 DRM_UNLOCK();
 536         }
 537
 538         drm_mem_uninit();
 539
 540         pci_disable_busmaster(dev->device);
 541
 542         DRM_SPINUNINIT(&dev->drw_lock);
 543         DRM_SPINUNINIT(&dev->vbl_lock);
 544         DRM_SPINUNINIT(&dev->dev_lock);
 545 }
 546
 547 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 548 {
 549         struct drm_version *version = data;
 550         int len;
 551
 552 #define DRM_COPY( name, value )                                         \
 553         len = strlen( value );                                          \
 554         if ( len > name##_len ) len = name##_len;                       \
 555         name##_len = strlen( value );                                   \
 556         if ( len && name ) {                                            \
 557                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 558                         return EFAULT;                          \
 559         }
 560
 561         version->version_major          = dev->driver->major;
 562         version->version_minor          = dev->driver->minor;
 563         version->version_patchlevel     = dev->driver->patchlevel;
 564
 565         DRM_COPY(version->name, dev->driver->name);
 566         DRM_COPY(version->date, dev->driver->date);
 567         DRM_COPY(version->desc, dev->driver->desc);
 568
 569         return 0;
 570 }
 571
 572 int drm_open(struct dev_open_args *ap)
 573 {
 574         struct cdev *kdev = ap->a_head.a_dev;
 575         int flags = ap->a_oflags;
 576         int fmt = 0;
 577         struct thread *p = curthread;
 578         struct drm_device *dev = NULL;
 579         int retcode = 0;
 580
 581         dev = DRIVER_SOFTC(minor(kdev));
 582
 583         DRM_DEBUG("open_count = %d\n", dev->open_count);
 584
 585         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
 586
 587         if (!retcode) {
 588                 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
 589                 DRM_LOCK();
 590                 device_busy(dev->device);
 591                 if (!dev->open_count++)
 592                         retcode = drm_firstopen(dev);
 593                 DRM_UNLOCK();
 594         }
 595
 596         return retcode;
 597 }
 598
 599 int drm_close(struct dev_close_args *ap)
 600 {
 601         struct cdev *kdev = ap->a_head.a_dev;
 602         struct drm_file *file_priv;
 603         struct drm_device *dev;
 604         int retcode = 0;
 605
 606         dev = DRIVER_SOFTC(minor(kdev));
 607         file_priv = drm_find_file_by_proc(dev, curthread);
 608
 609         DRM_DEBUG("open_count = %d\n", dev->open_count);
 610
 611         DRM_LOCK();
 612
 613         if (--file_priv->refs != 0)
 614                 goto done;
 615
 616         if (dev->driver->preclose != NULL)
 617                 dev->driver->preclose(dev, file_priv);
 618
 619         /* ========================================================
 620          * Begin inline drm_release
 621          */
 622
 623         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 624             DRM_CURRENTPID, (long)dev->device, dev->open_count);
 625
 626         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 627             && dev->lock.file_priv == file_priv) {
 628                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 629                           DRM_CURRENTPID,
 630                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 631                 if (dev->driver->reclaim_buffers_locked != NULL)
 632                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 633
 634                 drm_lock_free(&dev->lock,
 635                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 636
 637                                 /* FIXME: may require heavy-handed reset of
 638                                    hardware at this point, possibly
 639                                    processed via a callback to the X
 640                                    server. */
 641         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 642             dev->lock.hw_lock != NULL) {
 643                 /* The lock is required to reclaim buffers */
 644                 for (;;) {
 645                         if (!dev->lock.hw_lock) {
 646                                 /* Device has been unregistered */
 647                                 retcode = EINTR;
 648                                 break;
 649                         }
 650                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 651                                 dev->lock.file_priv = file_priv;
 652                                 dev->lock.lock_time = jiffies;
 653                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 654                                 break;  /* Got lock */
 655                         }
 656                         /* Contention */
 657                         tsleep_interlock((void *)&dev->lock.lock_queue, PCATCH);
 658                         DRM_UNLOCK();
 659                         retcode = tsleep((void *)&dev->lock.lock_queue,
 660                                          PCATCH | PINTERLOCKED, "drmlk2", 0);
 661                         DRM_LOCK();
 662                         if (retcode)
 663                                 break;
 664                 }
 665                 if (retcode == 0) {
 666                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 667                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
 668                 }
 669         }
 670
 671         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
 672             !dev->driver->reclaim_buffers_locked)
 673                 drm_reclaim_buffers(dev, file_priv);
 674
 675         funsetown(&dev->buf_sigio);
 676
 677         if (dev->driver->postclose != NULL)
 678                 dev->driver->postclose(dev, file_priv);
 679         TAILQ_REMOVE(&dev->files, file_priv, link);
 680         free(file_priv, DRM_MEM_FILES);
 681
 682         /* ========================================================
 683          * End inline drm_release
 684          */
 685 done:
 686         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
 687         device_unbusy(dev->device);
 688         if (--dev->open_count == 0) {
 689                 retcode = drm_lastclose(dev);
 690         }
 691
 692         DRM_UNLOCK();
 693
 694         return (0);
 695 }
 696
 697 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 698  */
 699 int drm_ioctl(struct dev_ioctl_args *ap)
 700 {
 701         struct cdev *kdev = ap->a_head.a_dev;
 702         u_long cmd = ap->a_cmd;
 703         caddr_t data = ap->a_data;
 704         struct thread *p = curthread;
 705         struct drm_device *dev = drm_get_device_from_kdev(kdev);
 706         int retcode = 0;
 707         drm_ioctl_desc_t *ioctl;
 708         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 709         int nr = DRM_IOCTL_NR(cmd);
 710         int is_driver_ioctl = 0;
 711         struct drm_file *file_priv;
 712
 713         file_priv = drm_find_file_by_proc(dev, p);
 714         if (!file_priv) {
 715                 DRM_ERROR("can't find authenticator\n");
 716                 return EINVAL;
 717         }
 718
 719         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 720         ++file_priv->ioctl_count;
 721
 722         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 723             DRM_CURRENTPID, cmd, nr, (long)dev->device,
 724             file_priv->authenticated);
 725
 726         switch (cmd) {
 727         case FIONBIO:
 728         case FIOASYNC:
 729                 return 0;
 730
 731         case FIOSETOWN:
 732                 return fsetown(*(int *)data, &dev->buf_sigio);
 733
 734         case FIOGETOWN:
 735                 *(int *) data = fgetown(&dev->buf_sigio);
 736                 return 0;
 737         }
 738
 739         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 740                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 741                 return EINVAL;
 742         }
 743
 744         ioctl = &drm_ioctls[nr];
 745         /* It's not a core DRM ioctl, try driver-specific. */
 746         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 747                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 748                 nr -= DRM_COMMAND_BASE;
 749                 if (nr > dev->driver->max_ioctl) {
 750                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
 751                             nr, dev->driver->max_ioctl);
 752                         return EINVAL;
 753                 }
 754                 ioctl = &dev->driver->ioctls[nr];
 755                 is_driver_ioctl = 1;
 756         }
 757         func = ioctl->func;
 758
 759         if (func == NULL) {
 760                 DRM_DEBUG("no function\n");
 761                 return EINVAL;
 762         }
 763
 764         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 765             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 766             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 767                 return EACCES;
 768
 769         if (is_driver_ioctl) {
 770                 DRM_LOCK();
 771                 /* shared code returns -errno */
 772                 retcode = -func(dev, data, file_priv);
 773                 DRM_UNLOCK();
 774         } else {
 775                 retcode = func(dev, data, file_priv);
 776         }
 777
 778         if (retcode != 0)
 779                 DRM_DEBUG("    returning %d\n", retcode);
 780
 781         return retcode;
 782 }
 783
 784 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 785 {
 786         drm_local_map_t *map;
 787
 788         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 789         TAILQ_FOREACH(map, &dev->maplist, link) {
 790                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
 791                         return map;
 792         }
 793
 794         return NULL;
 795 }
 796
 797 #if DRM_LINUX
 798
 799 #include <sys/sysproto.h>
 800
 801 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
 802
 803 #define LINUX_IOCTL_DRM_MIN             0x6400
 804 #define LINUX_IOCTL_DRM_MAX             0x64ff
 805
 806 static linux_ioctl_function_t drm_linux_ioctl;
 807 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
 808     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
 809
 810 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
 811     linux_ioctl_register_handler, &drm_handler);
 812 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
 813     linux_ioctl_unregister_handler, &drm_handler);
 814
 815 /* The bits for in/out are switched on Linux */
 816 #define LINUX_IOC_IN    IOC_OUT
 817 #define LINUX_IOC_OUT   IOC_IN
 818
 819 static int
 820 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
 821 {
 822         int error;
 823         int cmd = args->cmd;
 824
 825         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
 826         if (cmd & LINUX_IOC_IN)
 827                 args->cmd |= IOC_IN;
 828         if (cmd & LINUX_IOC_OUT)
 829                 args->cmd |= IOC_OUT;
 830
 831         error = ioctl(p, (struct ioctl_args *)args);
 832
 833         return error;
 834 }
 835 #endif /* DRM_LINUX */