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