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