sys/dev/drm2/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 #include <sys/cdefs.h>
  32 __FBSDID("$FreeBSD$");
  33
  34 /** @file drm_drv.c
  35  * The catch-all file for DRM device support, including module setup/teardown,
  36  * open/close, and ioctl dispatch.
  37  */
  38
  39 #include <sys/limits.h>
  40 #include <sys/sysent.h>
  41 #include <dev/drm2/drmP.h>
  42 #include <dev/drm2/drm.h>
  43 #include <dev/drm2/drm_sarea.h>
  44 #include <dev/drm2/drm_mode.h>
  45
  46 #ifdef DRM_DEBUG_DEFAULT_ON
  47 int drm_debug_flag = (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS |
  48     DRM_DEBUGBITS_FAILED_IOCTL);
  49 #else
  50 int drm_debug_flag = 0;
  51 #endif
  52 int drm_notyet_flag = 0;
  53
  54 unsigned int drm_vblank_offdelay = 5000;    /* Default to 5000 msecs. */
  55 unsigned int drm_timestamp_precision = 20;  /* Default to 20 usecs. */
  56
  57 static int drm_load(struct drm_device *dev);
  58 static void drm_unload(struct drm_device *dev);
  59 static drm_pci_id_list_t *drm_find_description(int vendor, int device,
  60     drm_pci_id_list_t *idlist);
  61 static int drm_mmap_single(struct cdev *kdev, vm_ooffset_t *offset,
  62     vm_size_t size, struct vm_object **obj_res, int nprot);
  63
  64 static int
  65 drm_modevent(module_t mod, int type, void *data)
  66 {
  67
  68         switch (type) {
  69         case MOD_LOAD:
  70                 TUNABLE_INT_FETCH("drm.debug", &drm_debug_flag);
  71                 TUNABLE_INT_FETCH("drm.notyet", &drm_notyet_flag);
  72                 break;
  73         }
  74         return (0);
  75 }
  76
  77 static moduledata_t drm_mod = {
  78         "drmn",
  79         drm_modevent,
  80         0
  81 };
  82 DECLARE_MODULE(drmn, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
  83 MODULE_VERSION(drmn, 1);
  84 MODULE_DEPEND(drmn, agp, 1, 1, 1);
  85 MODULE_DEPEND(drmn, pci, 1, 1, 1);
  86 MODULE_DEPEND(drmn, mem, 1, 1, 1);
  87 MODULE_DEPEND(drmn, iicbus, 1, 1, 1);
  88
  89 static drm_ioctl_desc_t           drm_ioctls[256] = {
  90         DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
  91         DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
  92         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
  93         DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
  94         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
  95         DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
  96         DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
  97         DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED),
  98         DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
  99
 100         DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 101         DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 102         DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 103         DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 104
 105         DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 106         DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
 107
 108         DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 109         DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
 110
 111         DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY),
 112         DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY),
 113
 114         DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
 115         DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 116         DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 117         DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
 118         DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 119         DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 120         DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
 121
 122         DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 123         DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 124
 125         DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
 126         DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
 127
 128         DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
 129
 130         DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 131         DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 132         DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
 133         DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
 134         DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
 135         DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
 136
 137         DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 138
 139         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 140         DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 141         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 142         DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
 143         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 144         DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 145         DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 146         DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 147
 148         DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 149         DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 150         DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED),
 151         DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
 152         DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 153
 154         DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED),
 155         DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED),
 156         DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED),
 157
 158         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 159         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 160         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 161         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 162         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 163         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 164         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 165         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED),
 166         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED),
 167         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 168         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 169         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 170         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 171         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 172         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 173         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 174         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 175         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 176         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 177         DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 178         DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 179         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 180         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 181         DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 182         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 183 };
 184
 185 static struct cdevsw drm_cdevsw = {
 186         .d_version =    D_VERSION,
 187         .d_open =       drm_open,
 188         .d_read =       drm_read,
 189         .d_ioctl =      drm_ioctl,
 190         .d_poll =       drm_poll,
 191         .d_mmap =       drm_mmap,
 192         .d_mmap_single = drm_mmap_single,
 193         .d_name =       "drm",
 194         .d_flags =      D_TRACKCLOSE
 195 };
 196
 197 static int drm_msi = 1; /* Enable by default. */
 198 TUNABLE_INT("hw.drm.msi", &drm_msi);
 199 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device");
 200 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1,
 201     "Enable MSI interrupts for drm devices");
 202
 203 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
 204         {0x8086, 0x2772}, /* Intel i945G        */ \
 205         {0x8086, 0x27A2}, /* Intel i945GM       */ \
 206         {0x8086, 0x27AE}, /* Intel i945GME      */ \
 207         {0, 0}
 208 };
 209
 210 static int drm_msi_is_blacklisted(int vendor, int device)
 211 {
 212         int i = 0;
 213
 214         for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
 215                 if ((drm_msi_blacklist[i].vendor == vendor) &&
 216                     (drm_msi_blacklist[i].device == device)) {
 217                         return 1;
 218                 }
 219         }
 220
 221         return 0;
 222 }
 223
 224 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
 225 {
 226         drm_pci_id_list_t *id_entry;
 227         int vendor, device;
 228
 229         vendor = pci_get_vendor(kdev);
 230         device = pci_get_device(kdev);
 231
 232         if (pci_get_class(kdev) != PCIC_DISPLAY
 233             || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
 234                 return ENXIO;
 235
 236         id_entry = drm_find_description(vendor, device, idlist);
 237         if (id_entry != NULL) {
 238                 if (!device_get_desc(kdev)) {
 239                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
 240                         device_set_desc(kdev, id_entry->name);
 241                 }
 242                 return 0;
 243         }
 244
 245         return ENXIO;
 246 }
 247
 248 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
 249 {
 250         struct drm_device *dev;
 251         drm_pci_id_list_t *id_entry;
 252         int error, msicount;
 253
 254         dev = device_get_softc(kdev);
 255
 256         dev->device = kdev;
 257
 258         dev->pci_domain = pci_get_domain(dev->device);
 259         dev->pci_bus = pci_get_bus(dev->device);
 260         dev->pci_slot = pci_get_slot(dev->device);
 261         dev->pci_func = pci_get_function(dev->device);
 262
 263         dev->pci_vendor = pci_get_vendor(dev->device);
 264         dev->pci_device = pci_get_device(dev->device);
 265
 266         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
 267                 if (drm_msi &&
 268                     !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
 269                         msicount = pci_msi_count(dev->device);
 270                         DRM_DEBUG("MSI count = %d\n", msicount);
 271                         if (msicount > 1)
 272                                 msicount = 1;
 273
 274                         if (pci_alloc_msi(dev->device, &msicount) == 0) {
 275                                 DRM_INFO("MSI enabled %d message(s)\n",
 276                                     msicount);
 277                                 dev->msi_enabled = 1;
 278                                 dev->irqrid = 1;
 279                         }
 280                 }
 281
 282                 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
 283                     &dev->irqrid, RF_SHAREABLE);
 284                 if (!dev->irqr) {
 285                         return (ENOENT);
 286                 }
 287
 288                 dev->irq = (int) rman_get_start(dev->irqr);
 289         }
 290
 291         mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
 292         mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
 293         mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
 294         mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
 295         mtx_init(&dev->event_lock, "drmev", NULL, MTX_DEF);
 296         sx_init(&dev->dev_struct_lock, "drmslk");
 297
 298         id_entry = drm_find_description(dev->pci_vendor,
 299             dev->pci_device, idlist);
 300         dev->id_entry = id_entry;
 301
 302         error = drm_load(dev);
 303         if (error == 0)
 304                 error = drm_create_cdevs(kdev);
 305         return (error);
 306 }
 307
 308 int
 309 drm_create_cdevs(device_t kdev)
 310 {
 311         struct drm_device *dev;
 312         int error, unit;
 313
 314         unit = device_get_unit(kdev);
 315         dev = device_get_softc(kdev);
 316
 317         error = make_dev_p(MAKEDEV_WAITOK | MAKEDEV_CHECKNAME, &dev->devnode,
 318             &drm_cdevsw, 0, DRM_DEV_UID, DRM_DEV_GID,
 319             DRM_DEV_MODE, "dri/card%d", unit);
 320         if (error == 0)
 321                 dev->devnode->si_drv1 = dev;
 322         return (error);
 323 }
 324
 325 int drm_detach(device_t kdev)
 326 {
 327         struct drm_device *dev;
 328
 329         dev = device_get_softc(kdev);
 330         drm_unload(dev);
 331         if (dev->irqr) {
 332                 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid,
 333                     dev->irqr);
 334                 if (dev->msi_enabled) {
 335                         pci_release_msi(dev->device);
 336                         DRM_INFO("MSI released\n");
 337                 }
 338         }
 339         return (0);
 340 }
 341
 342 #ifndef DRM_DEV_NAME
 343 #define DRM_DEV_NAME "drm"
 344 #endif
 345
 346 devclass_t drm_devclass;
 347
 348 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 349     drm_pci_id_list_t *idlist)
 350 {
 351         int i = 0;
 352
 353         for (i = 0; idlist[i].vendor != 0; i++) {
 354                 if ((idlist[i].vendor == vendor) &&
 355                     ((idlist[i].device == device) ||
 356                     (idlist[i].device == 0))) {
 357                         return &idlist[i];
 358                 }
 359         }
 360         return NULL;
 361 }
 362
 363 static int drm_firstopen(struct drm_device *dev)
 364 {
 365         drm_local_map_t *map;
 366         int i;
 367
 368         DRM_LOCK_ASSERT(dev);
 369
 370         /* prebuild the SAREA */
 371         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
 372             _DRM_CONTAINS_LOCK, &map);
 373         if (i != 0)
 374                 return i;
 375
 376         if (dev->driver->firstopen)
 377                 dev->driver->firstopen(dev);
 378
 379         dev->buf_use = 0;
 380
 381         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
 382                 i = drm_dma_setup(dev);
 383                 if (i != 0)
 384                         return i;
 385         }
 386
 387         for (i = 0; i < DRM_HASH_SIZE; i++) {
 388                 dev->magiclist[i].head = NULL;
 389                 dev->magiclist[i].tail = NULL;
 390         }
 391
 392         dev->lock.lock_queue = 0;
 393         if (!drm_core_check_feature(dev, DRIVER_MODESET))
 394                 dev->irq_enabled = 0;
 395         dev->context_flag = 0;
 396         dev->last_context = 0;
 397         dev->if_version = 0;
 398
 399         dev->buf_sigio = NULL;
 400
 401         DRM_DEBUG("\n");
 402
 403         return 0;
 404 }
 405
 406 static int drm_lastclose(struct drm_device *dev)
 407 {
 408         drm_magic_entry_t *pt, *next;
 409         drm_local_map_t *map, *mapsave;
 410         int i;
 411
 412         DRM_LOCK_ASSERT(dev);
 413
 414         DRM_DEBUG("\n");
 415
 416         if (dev->driver->lastclose != NULL)
 417                 dev->driver->lastclose(dev);
 418
 419         if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled)
 420                 drm_irq_uninstall(dev);
 421
 422         if (dev->unique) {
 423                 free(dev->unique, DRM_MEM_DRIVER);
 424                 dev->unique = NULL;
 425                 dev->unique_len = 0;
 426         }
 427         /* Clear pid list */
 428         for (i = 0; i < DRM_HASH_SIZE; i++) {
 429                 for (pt = dev->magiclist[i].head; pt; pt = next) {
 430                         next = pt->next;
 431                         free(pt, DRM_MEM_MAGIC);
 432                 }
 433                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 434         }
 435
 436         DRM_UNLOCK(dev);
 437         drm_drawable_free_all(dev);
 438         DRM_LOCK(dev);
 439
 440         /* Clear AGP information */
 441         if (dev->agp) {
 442                 drm_agp_mem_t *entry;
 443                 drm_agp_mem_t *nexte;
 444
 445                 /* Remove AGP resources, but leave dev->agp intact until
 446                  * drm_unload is called.
 447                  */
 448                 for (entry = dev->agp->memory; entry; entry = nexte) {
 449                         nexte = entry->next;
 450                         if (entry->bound)
 451                                 drm_agp_unbind_memory(entry->handle);
 452                         drm_agp_free_memory(entry->handle);
 453                         free(entry, DRM_MEM_AGPLISTS);
 454                 }
 455                 dev->agp->memory = NULL;
 456
 457                 if (dev->agp->acquired)
 458                         drm_agp_release(dev);
 459
 460                 dev->agp->acquired = 0;
 461                 dev->agp->enabled  = 0;
 462         }
 463         if (dev->sg != NULL) {
 464                 drm_sg_cleanup(dev->sg);
 465                 dev->sg = NULL;
 466         }
 467
 468         TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
 469                 if (!(map->flags & _DRM_DRIVER))
 470                         drm_rmmap(dev, map);
 471         }
 472
 473         drm_dma_takedown(dev);
 474         if (dev->lock.hw_lock) {
 475                 dev->lock.hw_lock = NULL; /* SHM removed */
 476                 dev->lock.file_priv = NULL;
 477                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 478         }
 479
 480         return 0;
 481 }
 482
 483 static int drm_load(struct drm_device *dev)
 484 {
 485         int i, retcode;
 486
 487         DRM_DEBUG("\n");
 488
 489         TAILQ_INIT(&dev->maplist);
 490         dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL);
 491         if (dev->map_unrhdr == NULL) {
 492                 DRM_ERROR("Couldn't allocate map number allocator\n");
 493                 return EINVAL;
 494         }
 495
 496
 497         drm_mem_init();
 498         drm_sysctl_init(dev);
 499         TAILQ_INIT(&dev->files);
 500
 501         dev->counters  = 6;
 502         dev->types[0]  = _DRM_STAT_LOCK;
 503         dev->types[1]  = _DRM_STAT_OPENS;
 504         dev->types[2]  = _DRM_STAT_CLOSES;
 505         dev->types[3]  = _DRM_STAT_IOCTLS;
 506         dev->types[4]  = _DRM_STAT_LOCKS;
 507         dev->types[5]  = _DRM_STAT_UNLOCKS;
 508
 509         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 510                 atomic_set(&dev->counts[i], 0);
 511
 512         INIT_LIST_HEAD(&dev->vblank_event_list);
 513
 514         if (drm_core_has_AGP(dev)) {
 515                 if (drm_device_is_agp(dev))
 516                         dev->agp = drm_agp_init();
 517                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 518                     dev->agp == NULL) {
 519                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 520                             "AGP.\n");
 521                         retcode = ENOMEM;
 522                         goto error;
 523                 }
 524                 if (dev->agp != NULL && dev->agp->info.ai_aperture_base != 0) {
 525                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
 526                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
 527                                 dev->agp->mtrr = 1;
 528                 }
 529         }
 530
 531         retcode = drm_ctxbitmap_init(dev);
 532         if (retcode != 0) {
 533                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 534                 goto error;
 535         }
 536
 537         dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
 538         if (dev->drw_unrhdr == NULL) {
 539                 DRM_ERROR("Couldn't allocate drawable number allocator\n");
 540                 retcode = ENOMEM;
 541                 goto error;
 542         }
 543
 544         if (dev->driver->driver_features & DRIVER_GEM) {
 545                 retcode = drm_gem_init(dev);
 546                 if (retcode != 0) {
 547                         DRM_ERROR("Cannot initialize graphics execution "
 548                                   "manager (GEM)\n");
 549                         goto error1;
 550                 }
 551         }
 552
 553         if (dev->driver->load != NULL) {
 554                 DRM_LOCK(dev);
 555                 /* Shared code returns -errno. */
 556                 retcode = -dev->driver->load(dev,
 557                     dev->id_entry->driver_private);
 558                 if (pci_enable_busmaster(dev->device))
 559                         DRM_ERROR("Request to enable bus-master failed.\n");
 560                 DRM_UNLOCK(dev);
 561                 if (retcode != 0)
 562                         goto error;
 563         }
 564
 565         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 566             dev->driver->name,
 567             dev->driver->major,
 568             dev->driver->minor,
 569             dev->driver->patchlevel,
 570             dev->driver->date);
 571
 572         return 0;
 573
 574 error1:
 575         delete_unrhdr(dev->drw_unrhdr);
 576 error:
 577         drm_sysctl_cleanup(dev);
 578         DRM_LOCK(dev);
 579         drm_lastclose(dev);
 580         DRM_UNLOCK(dev);
 581         if (dev->devnode != NULL)
 582                 destroy_dev(dev->devnode);
 583
 584         mtx_destroy(&dev->drw_lock);
 585         mtx_destroy(&dev->vbl_lock);
 586         mtx_destroy(&dev->irq_lock);
 587         mtx_destroy(&dev->dev_lock);
 588         mtx_destroy(&dev->event_lock);
 589         sx_destroy(&dev->dev_struct_lock);
 590
 591         return retcode;
 592 }
 593
 594 static void drm_unload(struct drm_device *dev)
 595 {
 596         int i;
 597
 598         DRM_DEBUG("\n");
 599
 600         drm_sysctl_cleanup(dev);
 601         if (dev->devnode != NULL)
 602                 destroy_dev(dev->devnode);
 603
 604         drm_ctxbitmap_cleanup(dev);
 605
 606         if (dev->driver->driver_features & DRIVER_GEM)
 607                 drm_gem_destroy(dev);
 608
 609         if (dev->agp && dev->agp->mtrr) {
 610                 int __unused retcode;
 611
 612                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
 613                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
 614                 DRM_DEBUG("mtrr_del = %d", retcode);
 615         }
 616
 617         drm_vblank_cleanup(dev);
 618
 619         DRM_LOCK(dev);
 620         drm_lastclose(dev);
 621         DRM_UNLOCK(dev);
 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, DRM_MEM_AGPLISTS);
 638                 dev->agp = NULL;
 639         }
 640
 641         if (dev->driver->unload != NULL) {
 642                 DRM_LOCK(dev);
 643                 dev->driver->unload(dev);
 644                 DRM_UNLOCK(dev);
 645         }
 646
 647         delete_unrhdr(dev->drw_unrhdr);
 648         delete_unrhdr(dev->map_unrhdr);
 649
 650         drm_mem_uninit();
 651
 652         if (pci_disable_busmaster(dev->device))
 653                 DRM_ERROR("Request to disable bus-master failed.\n");
 654
 655         mtx_destroy(&dev->drw_lock);
 656         mtx_destroy(&dev->vbl_lock);
 657         mtx_destroy(&dev->irq_lock);
 658         mtx_destroy(&dev->dev_lock);
 659         mtx_destroy(&dev->event_lock);
 660         sx_destroy(&dev->dev_struct_lock);
 661 }
 662
 663 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 664 {
 665         struct drm_version *version = data;
 666         int len;
 667
 668 #define DRM_COPY( name, value )                                         \
 669         len = strlen( value );                                          \
 670         if ( len > name##_len ) len = name##_len;                       \
 671         name##_len = strlen( value );                                   \
 672         if ( len && name ) {                                            \
 673                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 674                         return EFAULT;                          \
 675         }
 676
 677         version->version_major          = dev->driver->major;
 678         version->version_minor          = dev->driver->minor;
 679         version->version_patchlevel     = dev->driver->patchlevel;
 680
 681         DRM_COPY(version->name, dev->driver->name);
 682         DRM_COPY(version->date, dev->driver->date);
 683         DRM_COPY(version->desc, dev->driver->desc);
 684
 685         return 0;
 686 }
 687
 688 int
 689 drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
 690 {
 691         struct drm_device *dev;
 692         int retcode;
 693
 694         dev = kdev->si_drv1;
 695         if (dev == NULL)
 696                 return (ENXIO);
 697
 698         DRM_DEBUG("open_count = %d\n", dev->open_count);
 699
 700         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
 701
 702         if (retcode == 0) {
 703                 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
 704                 DRM_LOCK(dev);
 705                 mtx_lock(&Giant);
 706                 device_busy(dev->device);
 707                 mtx_unlock(&Giant);
 708                 if (!dev->open_count++)
 709                         retcode = drm_firstopen(dev);
 710                 DRM_UNLOCK(dev);
 711         }
 712
 713         return (retcode);
 714 }
 715
 716 void drm_close(void *data)
 717 {
 718         struct drm_file *file_priv = data;
 719         struct drm_device *dev = file_priv->dev;
 720         int retcode = 0;
 721
 722         DRM_DEBUG("open_count = %d\n", dev->open_count);
 723
 724         DRM_LOCK(dev);
 725
 726         if (dev->driver->preclose != NULL)
 727                 dev->driver->preclose(dev, file_priv);
 728
 729         /* ========================================================
 730          * Begin inline drm_release
 731          */
 732
 733         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 734             DRM_CURRENTPID, (long)dev->device, dev->open_count);
 735
 736         if (dev->driver->driver_features & DRIVER_GEM)
 737                 drm_gem_release(dev, file_priv);
 738
 739         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 740             && dev->lock.file_priv == file_priv) {
 741                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 742                           DRM_CURRENTPID,
 743                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 744                 if (dev->driver->reclaim_buffers_locked != NULL)
 745                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 746
 747                 drm_lock_free(&dev->lock,
 748                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 749
 750                                 /* FIXME: may require heavy-handed reset of
 751                                    hardware at this point, possibly
 752                                    processed via a callback to the X
 753                                    server. */
 754         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 755             dev->lock.hw_lock != NULL) {
 756                 /* The lock is required to reclaim buffers */
 757                 for (;;) {
 758                         if (!dev->lock.hw_lock) {
 759                                 /* Device has been unregistered */
 760                                 retcode = EINTR;
 761                                 break;
 762                         }
 763                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 764                                 dev->lock.file_priv = file_priv;
 765                                 dev->lock.lock_time = jiffies;
 766                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 767                                 break;  /* Got lock */
 768                         }
 769                         /* Contention */
 770                         retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue,
 771                             PCATCH, "drmlk2", 0);
 772                         if (retcode)
 773                                 break;
 774                 }
 775                 if (retcode == 0) {
 776                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 777                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
 778                 }
 779         }
 780
 781         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
 782             !dev->driver->reclaim_buffers_locked)
 783                 drm_reclaim_buffers(dev, file_priv);
 784
 785         funsetown(&dev->buf_sigio);
 786         seldrain(&file_priv->event_poll);
 787
 788         if (dev->driver->postclose != NULL)
 789                 dev->driver->postclose(dev, file_priv);
 790         TAILQ_REMOVE(&dev->files, file_priv, link);
 791         free(file_priv, DRM_MEM_FILES);
 792
 793         /* ========================================================
 794          * End inline drm_release
 795          */
 796
 797         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
 798         mtx_lock(&Giant);
 799         device_unbusy(dev->device);
 800         mtx_unlock(&Giant);
 801         if (--dev->open_count == 0) {
 802                 retcode = drm_lastclose(dev);
 803         }
 804
 805         DRM_UNLOCK(dev);
 806 }
 807
 808 extern drm_ioctl_desc_t drm_compat_ioctls[];
 809
 810 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 811  */
 812 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
 813     DRM_STRUCTPROC *p)
 814 {
 815         struct drm_device *dev = drm_get_device_from_kdev(kdev);
 816         int retcode = 0;
 817         drm_ioctl_desc_t *ioctl;
 818         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 819         int nr = DRM_IOCTL_NR(cmd);
 820         int is_driver_ioctl = 0;
 821         struct drm_file *file_priv;
 822
 823         retcode = devfs_get_cdevpriv((void **)&file_priv);
 824         if (retcode != 0) {
 825                 DRM_ERROR("can't find authenticator\n");
 826                 return EINVAL;
 827         }
 828
 829         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 830         ++file_priv->ioctl_count;
 831
 832         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 833             DRM_CURRENTPID, cmd, nr, (long)dev->device,
 834             file_priv->authenticated);
 835
 836         switch (cmd) {
 837         case FIONBIO:
 838         case FIOASYNC:
 839                 return 0;
 840
 841         case FIOSETOWN:
 842                 return fsetown(*(int *)data, &dev->buf_sigio);
 843
 844         case FIOGETOWN:
 845                 *(int *) data = fgetown(&dev->buf_sigio);
 846                 return 0;
 847         }
 848
 849         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 850                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 851                 return EINVAL;
 852         }
 853
 854 #ifdef COMPAT_FREEBSD32
 855         /*
 856          * Called whenever a 32-bit process running under a 64-bit
 857          * kernel performs an ioctl on /dev/drm.
 858          */
 859         if (SV_CURPROC_FLAG(SV_ILP32) && drm_compat_ioctls[nr].func != NULL)
 860                 /*
 861                  * Assume that ioctls without an explicit compat
 862                  * routine will just work.  This may not always be a
 863                  * good assumption, but it's better than always
 864                  * failing.
 865                  */
 866                 ioctl = &drm_compat_ioctls[nr];
 867         else
 868 #endif
 869                 ioctl = &drm_ioctls[nr];
 870         /* It's not a core DRM ioctl, try driver-specific. */
 871         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 872                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 873                 nr -= DRM_COMMAND_BASE;
 874                 if (nr > dev->driver->max_ioctl) {
 875                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
 876                             nr, dev->driver->max_ioctl);
 877                         return EINVAL;
 878                 }
 879 #ifdef COMPAT_FREEBSD32
 880                 if (SV_CURPROC_FLAG(SV_ILP32) &&
 881                     nr < *dev->driver->compat_ioctls_nr &&
 882                     dev->driver->compat_ioctls[nr].func != NULL)
 883                         ioctl = &dev->driver->compat_ioctls[nr];
 884                 else
 885 #endif
 886                         ioctl = &dev->driver->ioctls[nr];
 887                 is_driver_ioctl = 1;
 888         }
 889         func = ioctl->func;
 890
 891         if (func == NULL) {
 892                 DRM_DEBUG("no function\n");
 893                 return EINVAL;
 894         }
 895
 896         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 897             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 898             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 899                 return EACCES;
 900
 901         if (is_driver_ioctl) {
 902                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 903                         DRM_LOCK(dev);
 904                 /* shared code returns -errno */
 905                 retcode = -func(dev, data, file_priv);
 906                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 907                         DRM_UNLOCK(dev);
 908         } else {
 909                 retcode = func(dev, data, file_priv);
 910         }
 911
 912         if (retcode != 0)
 913                 DRM_DEBUG("    returning %d\n", retcode);
 914         if (retcode != 0 &&
 915             (drm_debug_flag & DRM_DEBUGBITS_FAILED_IOCTL) != 0) {
 916                 printf(
 917 "pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n",
 918                     DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->device,
 919                     file_priv->authenticated, retcode);
 920         }
 921
 922         return retcode;
 923 }
 924
 925 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 926 {
 927         drm_local_map_t *map;
 928
 929         DRM_LOCK_ASSERT(dev);
 930         TAILQ_FOREACH(map, &dev->maplist, link) {
 931                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
 932                         return map;
 933         }
 934
 935         return NULL;
 936 }
 937
 938 int
 939 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx,
 940     struct sysctl_oid *top)
 941 {
 942         struct sysctl_oid *oid;
 943
 944         snprintf(dev->busid_str, sizeof(dev->busid_str),
 945              "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus,
 946              dev->pci_slot, dev->pci_func);
 947         oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid",
 948             CTLFLAG_RD, dev->busid_str, 0, NULL);
 949         if (oid == NULL)
 950                 return (ENOMEM);
 951         dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0;
 952         oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO,
 953             "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL);
 954         if (oid == NULL)
 955                 return (ENOMEM);
 956
 957         return (0);
 958 }
 959
 960 static int
 961 drm_mmap_single(struct cdev *kdev, vm_ooffset_t *offset, vm_size_t size,
 962     struct vm_object **obj_res, int nprot)
 963 {
 964         struct drm_device *dev;
 965
 966         dev = drm_get_device_from_kdev(kdev);
 967         if ((dev->driver->driver_features & DRIVER_GEM) != 0) {
 968                 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot));
 969         } else if (dev->drm_ttm_bo != NULL) {
 970                 return (ttm_bo_mmap_single(dev->drm_ttm_bo, offset, size,
 971                     obj_res, nprot));
 972         } else {
 973                 return (ENODEV);
 974         }
 975 }
 976
 977 #if DRM_LINUX
 978
 979 #include <sys/sysproto.h>
 980
 981 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
 982
 983 #define LINUX_IOCTL_DRM_MIN             0x6400
 984 #define LINUX_IOCTL_DRM_MAX             0x64ff
 985
 986 static linux_ioctl_function_t drm_linux_ioctl;
 987 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
 988     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
 989
 990 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
 991     linux_ioctl_register_handler, &drm_handler);
 992 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
 993     linux_ioctl_unregister_handler, &drm_handler);
 994
 995 /* The bits for in/out are switched on Linux */
 996 #define LINUX_IOC_IN    IOC_OUT
 997 #define LINUX_IOC_OUT   IOC_IN
 998
 999 static int
1000 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
1001 {
1002         int error;
1003         int cmd = args->cmd;
1004
1005         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
1006         if (cmd & LINUX_IOC_IN)
1007                 args->cmd |= IOC_IN;
1008         if (cmd & LINUX_IOC_OUT)
1009                 args->cmd |= IOC_OUT;
1010
1011         error = ioctl(p, (struct ioctl_args *)args);
1012
1013         return error;
1014 }
1015 #endif /* DRM_LINUX */
1016
1017 bool
1018 dmi_check_system(const struct dmi_system_id *sysid)
1019 {
1020
1021         /* XXXKIB */
1022         return (false);
1023 }
1024