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  * $DragonFly: src/sys/dev/drm/drm_drv.c,v 1.1 2008/04/05 18:12:29 hasso Exp $
  30  */
  31
  32 /** @file drm_drv.c
  33  * The catch-all file for DRM device support, including module setup/teardown,
  34  * open/close, and ioctl dispatch.
  35  */
  36
  37 #ifdef __DragonFly__
  38 #include <machine/limits.h>
  39 #else
  40 #include <sys/limits.h>
  41 #endif
  42 #include "drmP.h"
  43 #include "drm.h"
  44 #include "drm_sarea.h"
  45
  46 #ifdef DRM_DEBUG_DEFAULT_ON
  47 int drm_debug_flag = 1;
  48 #else
  49 int drm_debug_flag = 0;
  50 #endif
  51
  52 static int drm_load(drm_device_t *dev);
  53 static void drm_unload(drm_device_t *dev);
  54 static drm_pci_id_list_t *drm_find_description(int vendor, int device,
  55     drm_pci_id_list_t *idlist);
  56
  57 #if defined(__FreeBSD__) || defined(__DragonFly__)
  58 #define DRIVER_SOFTC(unit) \
  59         ((drm_device_t *)devclass_get_softc(drm_devclass, unit))
  60
  61 MODULE_VERSION(drm, 1);
  62 MODULE_DEPEND(drm, agp, 1, 1, 1);
  63 MODULE_DEPEND(drm, pci, 1, 1, 1);
  64 #if __FreeBSD_version > 502127
  65 MODULE_DEPEND(drm, mem, 1, 1, 1);
  66 #endif
  67 #endif /* __FreeBSD__ || __DragonFly__ */
  68
  69 #if defined(__NetBSD__) || defined(__OpenBSD__)
  70 #define DRIVER_SOFTC(unit) \
  71         ((drm_device_t *)device_lookup(&drm_cd, unit))
  72 #endif /* __NetBSD__ || __OpenBSD__ */
  73
  74 static drm_ioctl_desc_t           drm_ioctls[256] = {
  75         DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
  76         DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
  77         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
  78         DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
  79         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
  80         DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
  81         DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
  82         DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
  83
  84         DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  85         DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  86         DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  87         DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  88
  89         DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  90         DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
  91
  92         DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  93         DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
  94
  95         DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  96         DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  97         DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  98         DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
  99         DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 100         DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 101         DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
 102
 103         DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 104         DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 105
 106         DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
 107         DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
 108         DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
 109
 110         DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 111         DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER),
 112         DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
 113         DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
 114         DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
 115         DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
 116
 117         DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 118
 119         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 120         DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 121         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 122         DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
 123         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 124         DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 125         DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 126         DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 127
 128         DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 129         DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 130
 131         DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
 132         DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 133 };
 134
 135 #if defined(__FreeBSD__) || defined(__DragonFly__)
 136 #ifdef __FreeBSD__
 137 static struct cdevsw drm_cdevsw = {
 138 #if __FreeBSD_version >= 502103
 139         .d_version =    D_VERSION,
 140 #endif
 141         .d_open =       drm_open,
 142         .d_close =      drm_close,
 143         .d_read =       drm_read,
 144         .d_ioctl =      drm_ioctl,
 145         .d_poll =       drm_poll,
 146         .d_mmap =       drm_mmap,
 147         .d_name =       "drm",
 148 #if __FreeBSD_version >= 502103
 149         .d_flags =      D_TRACKCLOSE | D_NEEDGIANT,
 150 #else
 151         .d_maj =        145,
 152         .d_flags =      D_TRACKCLOSE,
 153 #endif
 154 #if __FreeBSD_version < 500000
 155         .d_bmaj =       -1
 156 #endif
 157 };
 158 #else   /* __FreeBSD__ */
 159 static struct dev_ops drm_cdevsw = {
 160         { "drm", 145, D_TRACKCLOSE },
 161         .d_open =       drm_open,
 162         .d_close =      drm_close,
 163         .d_read =       drm_read,
 164         .d_ioctl =      drm_ioctl,
 165         .d_poll =       drm_poll,
 166         .d_mmap =       drm_mmap
 167 };
 168 #endif  /* !__FreeBSD__ */
 169
 170 int drm_probe(device_t dev, drm_pci_id_list_t *idlist)
 171 {
 172         drm_pci_id_list_t *id_entry;
 173         int vendor, device;
 174 #if __FreeBSD_version < 700010
 175         device_t realdev;
 176
 177         if (!strcmp(device_get_name(dev), "drmsub"))
 178                 realdev = device_get_parent(dev);
 179         else
 180                 realdev = dev;
 181         vendor = pci_get_vendor(realdev);
 182         device = pci_get_device(realdev);
 183 #else
 184         vendor = pci_get_vendor(dev);
 185         device = pci_get_device(dev);
 186 #endif
 187
 188         id_entry = drm_find_description(vendor, device, idlist);
 189         if (id_entry != NULL) {
 190                 device_set_desc(dev, id_entry->name);
 191                 return 0;
 192         }
 193
 194         return ENXIO;
 195 }
 196
 197 int drm_attach(device_t nbdev, drm_pci_id_list_t *idlist)
 198 {
 199         drm_device_t *dev;
 200         drm_pci_id_list_t *id_entry;
 201         int unit;
 202
 203         unit = device_get_unit(nbdev);
 204         dev = device_get_softc(nbdev);
 205
 206 #if __FreeBSD_version < 700010
 207         if (!strcmp(device_get_name(nbdev), "drmsub"))
 208                 dev->device = device_get_parent(nbdev);
 209         else
 210                 dev->device = nbdev;
 211 #else
 212         dev->device = nbdev;
 213 #endif
 214 #ifdef __DragonFly__
 215         dev_ops_add(&drm_cdevsw, -1, unit);
 216 #endif
 217         dev->devnode = make_dev(&drm_cdevsw,
 218                         unit,
 219                         DRM_DEV_UID,
 220                         DRM_DEV_GID,
 221                         DRM_DEV_MODE,
 222                         "dri/card%d", unit);
 223 #if __FreeBSD_version >= 500000
 224         mtx_init(&dev->dev_lock, "drm device", NULL, MTX_DEF);
 225         mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
 226 #elif defined(__DragonFly__)
 227         DRM_SPININIT(&dev->dev_lock, "drm device");
 228         DRM_SPININIT(&dev->drw_lock, "drmdrw");
 229 #endif
 230
 231         id_entry = drm_find_description(pci_get_vendor(dev->device),
 232             pci_get_device(dev->device), idlist);
 233         dev->id_entry = id_entry;
 234
 235         return drm_load(dev);
 236 }
 237
 238 int drm_detach(device_t dev)
 239 {
 240         drm_unload(device_get_softc(dev));
 241         return 0;
 242 }
 243
 244 #ifndef DRM_DEV_NAME
 245 #define DRM_DEV_NAME "drm"
 246 #endif
 247
 248 devclass_t drm_devclass;
 249
 250 #elif defined(__NetBSD__) || defined(__OpenBSD__)
 251
 252 static struct cdevsw drm_cdevsw = {
 253         drm_open,
 254         drm_close,
 255         drm_read,
 256         nowrite,
 257         drm_ioctl,
 258         nostop,
 259         notty,
 260         drm_poll,
 261         drm_mmap,
 262         nokqfilter,
 263         D_TTY
 264 };
 265
 266 int drm_refcnt = 0;
 267
 268 #if defined(__NetBSD__) && __NetBSD_Version__ >= 106080000
 269 MOD_DEV("drm", DRIVER_NAME, NULL, -1, &drm_cdevsw, CDEV_MAJOR);
 270 #else
 271 MOD_DEV("drm", LM_DT_CHAR, CDEV_MAJOR, &drm_cdevsw);
 272 #endif
 273
 274 int drm_lkmentry(struct lkm_table *lkmtp, int cmd, int ver);
 275 static int drm_lkmhandle(struct lkm_table *lkmtp, int cmd);
 276
 277 int drm_modprobe(void);
 278 int drm_probe(struct pci_attach_args *pa);
 279 void drm_attach(struct pci_attach_args *pa, dev_t kdev);
 280
 281 int drm_lkmentry(struct lkm_table *lkmtp, int cmd, int ver) {
 282         DISPATCH(lkmtp, cmd, ver, drm_lkmhandle, drm_lkmhandle, drm_lkmhandle);
 283 }
 284
 285 static int drm_lkmhandle(struct lkm_table *lkmtp, int cmd)
 286 {
 287         int error = 0;
 288
 289         switch(cmd) {
 290         case LKM_E_LOAD:
 291                 if (lkmexists(lkmtp))
 292                         return EEXIST;
 293
 294                 if(drm_modprobe())
 295                         return 0;
 296
 297                 return 1;
 298
 299         case LKM_E_UNLOAD:
 300                 if (drm_refcnt > 0)
 301                         return (EBUSY);
 302                 break;
 303         case LKM_E_STAT:
 304                 break;
 305
 306         default:
 307                 error = EIO;
 308                 break;
 309         }
 310
 311         return error;
 312 }
 313
 314 int drm_modprobe(void)
 315 {
 316         struct pci_attach_args pa;
 317         int error;
 318
 319         error = pci_find_device(&pa, drm_probe, idlist);
 320         if (error != 0)
 321                 drm_attach(&pa, 0);
 322
 323         return error;
 324 }
 325
 326 int drm_probe(struct pci_attach_args *pa, drm_pci_id_list_t idlist)
 327 {
 328         const char *desc;
 329         drm_pci_id_list_t *id_entry;
 330
 331         id_entry = drm_find_description(PCI_VENDOR(pa->pa_id),
 332             PCI_PRODUCT(pa->pa_id), idlist);
 333         if (id_entry != NULL) {
 334                 return 1;
 335         }
 336
 337         return 0;
 338 }
 339
 340 void drm_attach(struct pci_attach_args *pa, dev_t kdev,
 341     drm_pci_id_list_t *idlist)
 342 {
 343         int i;
 344         drm_device_t *dev;
 345         drm_pci_id_list_t *id_entry;
 346
 347         config_makeroom(kdev, &drm_cd);
 348         drm_cd.cd_devs[(kdev)] = malloc(sizeof(drm_device_t), M_DRM, M_WAITOK);
 349         dev = DRIVER_SOFTC(kdev);
 350
 351         memset(dev, 0, sizeof(drm_device_t));
 352         memcpy(&dev->pa, pa, sizeof(dev->pa));
 353
 354         dev->irq = pa->pa_intrline;
 355         dev->pci_domain = 0;
 356         dev->pci_bus = pa->pa_bus;
 357         dev->pci_slot = pa->pa_device;
 358         dev->pci_func = pa->pa_function;
 359         dev->dma_tag = pa->pa_dmat;
 360
 361         id_entry = drm_find_description(PCI_VENDOR(pa->pa_id),
 362             PCI_PRODUCT(pa->pa_id), idlist);
 363         dev->driver.pci_id_entry = id_entry;
 364
 365         DRM_INFO("%s", id_entry->name);
 366         drm_load(dev);
 367 }
 368
 369 int drm_detach(struct device *self, int flags)
 370 {
 371         drm_unload((drm_device_t *)self);
 372         return 0;
 373 }
 374
 375 int drm_activate(struct device *self, enum devact act)
 376 {
 377         switch (act) {
 378         case DVACT_ACTIVATE:
 379                 return (EOPNOTSUPP);
 380                 break;
 381
 382         case DVACT_DEACTIVATE:
 383                 /* FIXME */
 384                 break;
 385         }
 386         return (0);
 387 }
 388 #endif /* __NetBSD__ || __OpenBSD__ */
 389
 390 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 391     drm_pci_id_list_t *idlist)
 392 {
 393         int i = 0;
 394
 395         for (i = 0; idlist[i].vendor != 0; i++) {
 396                 if ((idlist[i].vendor == vendor) &&
 397                     (idlist[i].device == device)) {
 398                         return &idlist[i];
 399                 }
 400         }
 401         return NULL;
 402 }
 403
 404 static int drm_firstopen(drm_device_t *dev)
 405 {
 406         drm_local_map_t *map;
 407         int i;
 408
 409         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 410
 411         /* prebuild the SAREA */
 412         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
 413                        _DRM_CONTAINS_LOCK, &map);
 414         if (i != 0)
 415                 return i;
 416
 417         if (dev->driver.firstopen)
 418                 dev->driver.firstopen(dev);
 419
 420         dev->buf_use = 0;
 421
 422         if (dev->driver.use_dma) {
 423                 i = drm_dma_setup(dev);
 424                 if (i != 0)
 425                         return i;
 426         }
 427
 428         for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
 429                 dev->magiclist[i].head = NULL;
 430                 dev->magiclist[i].tail = NULL;
 431         }
 432
 433         dev->lock.lock_queue = 0;
 434         dev->irq_enabled = 0;
 435         dev->context_flag = 0;
 436         dev->last_context = 0;
 437         dev->if_version = 0;
 438
 439 #if defined(__FreeBSD__) || defined(__DragonFly__)
 440         dev->buf_sigio = NULL;
 441 #elif defined(__NetBSD__) || defined(__OpenBSD__)
 442         dev->buf_pgid = 0;
 443 #endif
 444
 445         DRM_DEBUG( "\n" );
 446
 447         return 0;
 448 }
 449
 450 static int drm_lastclose(drm_device_t *dev)
 451 {
 452         drm_magic_entry_t *pt, *next;
 453         drm_local_map_t *map, *mapsave;
 454         int i;
 455
 456         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
 457
 458         DRM_DEBUG( "\n" );
 459
 460         if (dev->driver.lastclose != NULL)
 461                 dev->driver.lastclose(dev);
 462
 463         if (dev->irq_enabled)
 464                 drm_irq_uninstall(dev);
 465
 466         if ( dev->unique ) {
 467                 free(dev->unique, M_DRM);
 468                 dev->unique = NULL;
 469                 dev->unique_len = 0;
 470         }
 471                                 /* Clear pid list */
 472         for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
 473                 for ( pt = dev->magiclist[i].head ; pt ; pt = next ) {
 474                         next = pt->next;
 475                         free(pt, M_DRM);
 476                 }
 477                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 478         }
 479
 480                                 /* Clear AGP information */
 481         if ( dev->agp ) {
 482                 drm_agp_mem_t *entry;
 483                 drm_agp_mem_t *nexte;
 484
 485                 /* Remove AGP resources, but leave dev->agp intact until
 486                  * drm_unload is called.
 487                  */
 488                 for ( entry = dev->agp->memory ; entry ; entry = nexte ) {
 489                         nexte = entry->next;
 490                         if ( entry->bound )
 491                                 drm_agp_unbind_memory(entry->handle);
 492                         drm_agp_free_memory(entry->handle);
 493                         free(entry, M_DRM);
 494                 }
 495                 dev->agp->memory = NULL;
 496
 497                 if (dev->agp->acquired)
 498                         drm_agp_release(dev);
 499
 500                 dev->agp->acquired = 0;
 501                 dev->agp->enabled  = 0;
 502         }
 503         if (dev->sg != NULL) {
 504                 drm_sg_cleanup(dev->sg);
 505                 dev->sg = NULL;
 506         }
 507
 508         TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
 509                 if (!(map->flags & _DRM_DRIVER))
 510                         drm_rmmap(dev, map);
 511         }
 512
 513         drm_dma_takedown(dev);
 514         if ( dev->lock.hw_lock ) {
 515                 dev->lock.hw_lock = NULL; /* SHM removed */
 516                 dev->lock.file_priv = NULL;
 517                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 518         }
 519
 520         return 0;
 521 }
 522
 523 static int drm_load(drm_device_t *dev)
 524 {
 525         int i, retcode;
 526
 527         DRM_DEBUG( "\n" );
 528
 529         dev->irq = pci_get_irq(dev->device);
 530 #if defined(__FreeBSD__) && __FreeBSD_version >= 700053
 531         dev->pci_domain = pci_get_domain(dev->device);
 532 #else
 533         dev->pci_domain = 0;
 534 #endif
 535         dev->pci_bus = pci_get_bus(dev->device);
 536         dev->pci_slot = pci_get_slot(dev->device);
 537         dev->pci_func = pci_get_function(dev->device);
 538
 539         dev->pci_vendor = pci_get_vendor(dev->device);
 540         dev->pci_device = pci_get_device(dev->device);
 541
 542         TAILQ_INIT(&dev->maplist);
 543
 544         drm_mem_init();
 545 #if defined(__FreeBSD__) || defined(__DragonFly__)
 546         drm_sysctl_init(dev);
 547 #endif
 548         TAILQ_INIT(&dev->files);
 549
 550         dev->counters  = 6;
 551         dev->types[0]  = _DRM_STAT_LOCK;
 552         dev->types[1]  = _DRM_STAT_OPENS;
 553         dev->types[2]  = _DRM_STAT_CLOSES;
 554         dev->types[3]  = _DRM_STAT_IOCTLS;
 555         dev->types[4]  = _DRM_STAT_LOCKS;
 556         dev->types[5]  = _DRM_STAT_UNLOCKS;
 557
 558         for ( i = 0 ; i < DRM_ARRAY_SIZE(dev->counts) ; i++ )
 559                 atomic_set( &dev->counts[i], 0 );
 560
 561         if (dev->driver.load != NULL) {
 562                 DRM_LOCK();
 563                 /* Shared code returns -errno. */
 564                 retcode = -dev->driver.load(dev,
 565                     dev->id_entry->driver_private);
 566                 DRM_UNLOCK();
 567                 if (retcode != 0)
 568                         goto error;
 569         }
 570
 571         if (dev->driver.use_agp) {
 572                 if (drm_device_is_agp(dev))
 573                         dev->agp = drm_agp_init();
 574                 if (dev->driver.require_agp && dev->agp == NULL) {
 575                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 576                             "AGP.\n");
 577                         retcode = ENOMEM;
 578                         goto error;
 579                 }
 580                 if (dev->agp != NULL) {
 581                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
 582                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
 583                                 dev->agp->mtrr = 1;
 584                 }
 585         }
 586
 587         retcode = drm_ctxbitmap_init(dev);
 588         if (retcode != 0) {
 589                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 590                 goto error;
 591         }
 592
 593 #ifdef __FreeBSD__
 594         dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
 595         if (dev->drw_unrhdr == NULL) {
 596                 DRM_ERROR("Couldn't allocate drawable number allocator\n");
 597                 goto error;
 598         }
 599 #endif
 600
 601         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 602                 dev->driver.name,
 603                 dev->driver.major,
 604                 dev->driver.minor,
 605                 dev->driver.patchlevel,
 606                 dev->driver.date);
 607
 608         return 0;
 609
 610 error:
 611 #if defined(__FreeBSD__) || defined(__DragonFly__)
 612         drm_sysctl_cleanup(dev);
 613 #endif
 614         DRM_LOCK();
 615         drm_lastclose(dev);
 616         DRM_UNLOCK();
 617 #if defined(__FreeBSD__) || defined(__DragonFly__)
 618         destroy_dev(dev->devnode);
 619 #if __FreeBSD_version >= 500000
 620         mtx_destroy(&dev->dev_lock);
 621 #elif defined(__DragonFly__)
 622         DRM_SPINUNINIT(&dev->dev_lock);
 623 #endif
 624 #endif
 625         return retcode;
 626 }
 627
 628 static void drm_unload(drm_device_t *dev)
 629 {
 630         int i;
 631
 632         DRM_DEBUG( "\n" );
 633
 634 #if defined(__FreeBSD__) || defined(__DragonFly__)
 635         drm_sysctl_cleanup(dev);
 636         destroy_dev(dev->devnode);
 637 #endif
 638
 639         drm_ctxbitmap_cleanup(dev);
 640
 641         if (dev->agp && dev->agp->mtrr) {
 642                 int __unused retcode;
 643
 644                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
 645                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
 646                 DRM_DEBUG("mtrr_del = %d", retcode);
 647         }
 648
 649         DRM_LOCK();
 650         drm_lastclose(dev);
 651         DRM_UNLOCK();
 652
 653         /* Clean up PCI resources allocated by drm_bufs.c.  We're not really
 654          * worried about resource consumption while the DRM is inactive (between
 655          * lastclose and firstopen or unload) because these aren't actually
 656          * taking up KVA, just keeping the PCI resource allocated.
 657          */
 658         for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
 659                 if (dev->pcir[i] == NULL)
 660                         continue;
 661                 bus_release_resource(dev->device, SYS_RES_MEMORY,
 662                     dev->pcirid[i], dev->pcir[i]);
 663                 dev->pcir[i] = NULL;
 664         }
 665
 666         if ( dev->agp ) {
 667                 free(dev->agp, M_DRM);
 668                 dev->agp = NULL;
 669         }
 670
 671         if (dev->driver.unload != NULL)
 672                 dev->driver.unload(dev);
 673
 674 #ifdef __FreeBSD__
 675         delete_unrhdr(dev->drw_unrhdr);
 676 #endif
 677
 678         drm_mem_uninit();
 679 #if defined(__FreeBSD__) &&  __FreeBSD_version >= 500000
 680         mtx_destroy(&dev->dev_lock);
 681 #elif defined(__DragonFly__)
 682         DRM_SPINUNINIT(&dev->dev_lock);
 683 #endif
 684 }
 685
 686
 687 int drm_version(drm_device_t *dev, void *data, struct drm_file *file_priv)
 688 {
 689         drm_version_t *version = data;
 690         int len;
 691
 692 #define DRM_COPY( name, value )                                         \
 693         len = strlen( value );                                          \
 694         if ( len > name##_len ) len = name##_len;                       \
 695         name##_len = strlen( value );                                   \
 696         if ( len && name ) {                                            \
 697                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 698                         return EFAULT;                          \
 699         }
 700
 701         version->version_major          = dev->driver.major;
 702         version->version_minor          = dev->driver.minor;
 703         version->version_patchlevel     = dev->driver.patchlevel;
 704
 705         DRM_COPY(version->name, dev->driver.name);
 706         DRM_COPY(version->date, dev->driver.date);
 707         DRM_COPY(version->desc, dev->driver.desc);
 708
 709         return 0;
 710 }
 711
 712 #ifndef __DragonFly__
 713 int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
 714 {
 715 #else
 716 int drm_open(struct dev_open_args *ap)
 717 {
 718         struct cdev *kdev = ap->a_head.a_dev;
 719         int flags = ap->a_oflags;
 720         int fmt = 0;
 721         struct thread *p = curthread;
 722 #endif
 723         drm_device_t *dev = NULL;
 724         int retcode = 0;
 725
 726         dev = DRIVER_SOFTC(minor(kdev));
 727
 728         DRM_DEBUG( "open_count = %d\n", dev->open_count );
 729
 730         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
 731
 732         if ( !retcode ) {
 733                 atomic_inc( &dev->counts[_DRM_STAT_OPENS] );
 734                 DRM_LOCK();
 735 #if defined(__FreeBSD__) || defined(__DragonFly__)
 736                 device_busy(dev->device);
 737 #endif
 738                 if ( !dev->open_count++ )
 739                         retcode = drm_firstopen(dev);
 740                 DRM_UNLOCK();
 741         }
 742
 743         return retcode;
 744 }
 745
 746 #ifndef __DragonFly__
 747 int drm_close(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
 748 {
 749 #else
 750 int drm_close(struct dev_close_args *ap)
 751 {
 752         struct cdev *kdev = ap->a_head.a_dev;
 753         struct thread *p = curthread;
 754 #endif
 755         drm_device_t *dev = drm_get_device_from_kdev(kdev);
 756         drm_file_t *file_priv;
 757         int retcode = 0;
 758
 759         DRM_DEBUG( "open_count = %d\n", dev->open_count );
 760
 761         DRM_LOCK();
 762
 763         file_priv = drm_find_file_by_proc(dev, p);
 764         if (!file_priv) {
 765                 DRM_UNLOCK();
 766                 DRM_ERROR("can't find authenticator\n");
 767                 return EINVAL;
 768         }
 769
 770         if (--file_priv->refs != 0)
 771                 goto done;
 772
 773         if (dev->driver.preclose != NULL)
 774                 dev->driver.preclose(dev, file_priv);
 775
 776         /* ========================================================
 777          * Begin inline drm_release
 778          */
 779
 780 #if defined(__FreeBSD__) || defined(__DragonFly__)
 781         DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n",
 782                    DRM_CURRENTPID, (long)dev->device, dev->open_count );
 783 #elif defined(__NetBSD__) || defined(__OpenBSD__)
 784         DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n",
 785                    DRM_CURRENTPID, (long)&dev->device, dev->open_count);
 786 #endif
 787
 788         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 789             && dev->lock.file_priv == file_priv) {
 790                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 791                           DRM_CURRENTPID,
 792                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 793                 if (dev->driver.reclaim_buffers_locked != NULL)
 794                         dev->driver.reclaim_buffers_locked(dev, file_priv);
 795
 796                 drm_lock_free(dev, &dev->lock.hw_lock->lock,
 797                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 798
 799                                 /* FIXME: may require heavy-handed reset of
 800                                    hardware at this point, possibly
 801                                    processed via a callback to the X
 802                                    server. */
 803         } else if (dev->driver.reclaim_buffers_locked != NULL &&
 804             dev->lock.hw_lock != NULL) {
 805                 /* The lock is required to reclaim buffers */
 806                 for (;;) {
 807                         if ( !dev->lock.hw_lock ) {
 808                                 /* Device has been unregistered */
 809                                 retcode = EINTR;
 810                                 break;
 811                         }
 812                         if (drm_lock_take(&dev->lock.hw_lock->lock,
 813                             DRM_KERNEL_CONTEXT)) {
 814                                 dev->lock.file_priv = file_priv;
 815                                 dev->lock.lock_time = jiffies;
 816                                 atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
 817                                 break;  /* Got lock */
 818                         }
 819                                 /* Contention */
 820 #if defined(__FreeBSD__) && __FreeBSD_version > 500000
 821                         retcode = mtx_sleep((void *)&dev->lock.lock_queue,
 822                             &dev->dev_lock, PZERO | PCATCH, "drmlk2", 0);
 823 #elif defined(__DragonFly__)
 824                         crit_enter();
 825                         tsleep_interlock((void *)&dev->lock.lock_queue);
 826                         DRM_UNLOCK();
 827                         retcode = tsleep((void *)&dev->lock.lock_queue,
 828                             PCATCH, "drmlk2", 0);
 829                         crit_exit();
 830                         DRM_LOCK();
 831 #else
 832                         retcode = tsleep((void *)&dev->lock.lock_queue,
 833                             PZERO | PCATCH, "drmlk2", 0);
 834 #endif
 835                         if (retcode)
 836                                 break;
 837                 }
 838                 if (retcode == 0) {
 839                         dev->driver.reclaim_buffers_locked(dev, file_priv);
 840                         drm_lock_free(dev, &dev->lock.hw_lock->lock,
 841                             DRM_KERNEL_CONTEXT);
 842                 }
 843         }
 844
 845         if (dev->driver.use_dma && !dev->driver.reclaim_buffers_locked)
 846                 drm_reclaim_buffers(dev, file_priv);
 847
 848 #if defined (__FreeBSD__) && (__FreeBSD_version >= 500000)
 849         funsetown(&dev->buf_sigio);
 850 #elif defined(__FreeBSD__) || defined(__DragonFly__)
 851         funsetown(dev->buf_sigio);
 852 #elif defined(__NetBSD__) || defined(__OpenBSD__)
 853         dev->buf_pgid = 0;
 854 #endif /* __NetBSD__  || __OpenBSD__ */
 855
 856         if (dev->driver.postclose != NULL)
 857                 dev->driver.postclose(dev, file_priv);
 858         TAILQ_REMOVE(&dev->files, file_priv, link);
 859         free(file_priv, M_DRM);
 860
 861         /* ========================================================
 862          * End inline drm_release
 863          */
 864
 865 done:
 866         atomic_inc( &dev->counts[_DRM_STAT_CLOSES] );
 867 #if defined(__FreeBSD__) || defined(__DragonFly__)
 868         device_unbusy(dev->device);
 869 #endif
 870         if (--dev->open_count == 0) {
 871                 retcode = drm_lastclose(dev);
 872         }
 873
 874         DRM_UNLOCK();
 875
 876         return retcode;
 877 }
 878
 879 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 880  */
 881 #ifndef __DragonFly__
 882 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
 883     DRM_STRUCTPROC *p)
 884 {
 885 #else
 886 int drm_ioctl(struct dev_ioctl_args *ap)
 887 {
 888         struct cdev *kdev = ap->a_head.a_dev;
 889         u_long cmd = ap->a_cmd;
 890         caddr_t data = ap->a_data;
 891         struct thread *p = curthread;
 892 #endif
 893         drm_device_t *dev = drm_get_device_from_kdev(kdev);
 894         int retcode = 0;
 895         drm_ioctl_desc_t *ioctl;
 896         int (*func)(drm_device_t *dev, void *data, struct drm_file *file_priv);
 897         int nr = DRM_IOCTL_NR(cmd);
 898         int is_driver_ioctl = 0;
 899         drm_file_t *file_priv;
 900
 901         DRM_LOCK();
 902         file_priv = drm_find_file_by_proc(dev, p);
 903         DRM_UNLOCK();
 904         if (file_priv == NULL) {
 905                 DRM_ERROR("can't find authenticator\n");
 906                 return EINVAL;
 907         }
 908
 909         atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] );
 910         ++file_priv->ioctl_count;
 911
 912 #if defined(__FreeBSD__) || defined(__DragonFly__)
 913         DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 914             DRM_CURRENTPID, cmd, nr, (long)dev->device,
 915             file_priv->authenticated );
 916 #elif defined(__NetBSD__) || defined(__OpenBSD__)
 917         DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 918             DRM_CURRENTPID, cmd, nr, (long)&dev->device,
 919             file_priv->authenticated );
 920 #endif
 921
 922         switch (cmd) {
 923         case FIONBIO:
 924         case FIOASYNC:
 925                 return 0;
 926
 927 #if defined(__FreeBSD__) || defined(__DragonFly__)
 928         case FIOSETOWN:
 929                 return fsetown(*(int *)data, &dev->buf_sigio);
 930
 931         case FIOGETOWN:
 932 #if (__FreeBSD_version >= 500000)
 933                 *(int *) data = fgetown(&dev->buf_sigio);
 934 #else
 935                 *(int *) data = fgetown(dev->buf_sigio);
 936 #endif
 937                 return 0;
 938 #endif /* __FreeBSD__ || __DragonFly__ */
 939 #if defined(__NetBSD__) || defined(__OpenBSD__)
 940         case TIOCSPGRP:
 941                 dev->buf_pgid = *(int *)data;
 942                 return 0;
 943
 944         case TIOCGPGRP:
 945                 *(int *)data = dev->buf_pgid;
 946                 return 0;
 947 #endif /* __NetBSD__ */
 948         }
 949
 950         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 951                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 952                 return EINVAL;
 953         }
 954
 955         ioctl = &drm_ioctls[nr];
 956         /* It's not a core DRM ioctl, try driver-specific. */
 957         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 958                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 959                 nr -= DRM_COMMAND_BASE;
 960                 if (nr > dev->driver.max_ioctl) {
 961                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
 962                             nr, dev->driver.max_ioctl);
 963                         return EINVAL;
 964                 }
 965                 ioctl = &dev->driver.ioctls[nr];
 966                 is_driver_ioctl = 1;
 967         }
 968         func = ioctl->func;
 969
 970         if (func == NULL) {
 971                 DRM_DEBUG( "no function\n" );
 972                 return EINVAL;
 973         }
 974
 975         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 976             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 977             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 978                 return EACCES;
 979
 980         if (is_driver_ioctl) {
 981                 DRM_LOCK();
 982                 /* shared code returns -errno */
 983                 retcode = -func(dev, data, file_priv);
 984                 DRM_UNLOCK();
 985         } else {
 986                 retcode = func(dev, data, file_priv);
 987         }
 988
 989         if (retcode != 0)
 990                 DRM_DEBUG("    returning %d\n", retcode);
 991
 992         return retcode;
 993 }
 994
 995 drm_local_map_t *drm_getsarea(drm_device_t *dev)
 996 {
 997         drm_local_map_t *map;
 998
 999         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
1000         TAILQ_FOREACH(map, &dev->maplist, link) {
1001                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
1002                         return map;
1003         }
1004
1005         return NULL;
1006 }
1007
1008 #if DRM_LINUX
1009
1010 #include <sys/sysproto.h>
1011
1012 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
1013
1014 #define LINUX_IOCTL_DRM_MIN             0x6400
1015 #define LINUX_IOCTL_DRM_MAX             0x64ff
1016
1017 static linux_ioctl_function_t drm_linux_ioctl;
1018 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
1019     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
1020
1021 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
1022     linux_ioctl_register_handler, &drm_handler);
1023 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
1024     linux_ioctl_unregister_handler, &drm_handler);
1025
1026 /* The bits for in/out are switched on Linux */
1027 #define LINUX_IOC_IN    IOC_OUT
1028 #define LINUX_IOC_OUT   IOC_IN
1029
1030 static int
1031 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
1032 {
1033         int error;
1034         int cmd = args->cmd;
1035
1036         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
1037         if (cmd & LINUX_IOC_IN)
1038                 args->cmd |= IOC_IN;
1039         if (cmd & LINUX_IOC_OUT)
1040                 args->cmd |= IOC_OUT;
1041
1042         error = ioctl(p, (struct ioctl_args *)args);
1043
1044         return error;
1045 }
1046 #endif /* DRM_LINUX */