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_core.h>
  44 #include <dev/drm2/drm_global.h>
  45 #include <dev/drm2/drm_sarea.h>
  46 #include <dev/drm2/drm_mode.h>
  47
  48 #ifdef DRM_DEBUG_DEFAULT_ON
  49 int drm_debug_flag = (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS |
  50     DRM_DEBUGBITS_FAILED_IOCTL);
  51 #else
  52 int drm_debug_flag = 0;
  53 #endif
  54 int drm_notyet_flag = 0;
  55
  56 unsigned int drm_vblank_offdelay = 5000;    /* Default to 5000 msecs. */
  57 unsigned int drm_timestamp_precision = 20;  /* Default to 20 usecs. */
  58
  59 /*
  60  * Default to use monotonic timestamps for wait-for-vblank and page-flip
  61  * complete events.
  62  */
  63 unsigned int drm_timestamp_monotonic = 1;
  64
  65 static int drm_load(struct drm_device *dev);
  66 static void drm_unload(struct drm_device *dev);
  67 static drm_pci_id_list_t *drm_find_description(int vendor, int device,
  68     drm_pci_id_list_t *idlist);
  69 static int drm_mmap_single(struct cdev *kdev, vm_ooffset_t *offset,
  70     vm_size_t size, struct vm_object **obj_res, int nprot);
  71
  72 static int
  73 drm_modevent(module_t mod, int type, void *data)
  74 {
  75
  76         switch (type) {
  77         case MOD_LOAD:
  78                 TUNABLE_INT_FETCH("drm.debug", &drm_debug_flag);
  79                 TUNABLE_INT_FETCH("drm.notyet", &drm_notyet_flag);
  80                 break;
  81         }
  82         return (0);
  83 }
  84
  85 static moduledata_t drm_mod = {
  86         "drmn",
  87         drm_modevent,
  88         0
  89 };
  90 DECLARE_MODULE(drmn, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
  91 MODULE_VERSION(drmn, 1);
  92 MODULE_DEPEND(drmn, agp, 1, 1, 1);
  93 MODULE_DEPEND(drmn, pci, 1, 1, 1);
  94 MODULE_DEPEND(drmn, mem, 1, 1, 1);
  95 MODULE_DEPEND(drmn, iicbus, 1, 1, 1);
  96
  97 static drm_ioctl_desc_t           drm_ioctls[256] = {
  98         DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
  99         DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
 100         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
 101         DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
 102         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
 103         DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
 104         DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
 105         DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED),
 106         DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
 107
 108         DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 109         DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 110         DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 111         DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 112
 113         DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 114         DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
 115
 116         DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 117         DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
 118
 119         DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY),
 120         DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY),
 121
 122         DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
 123         DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 124         DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 125         DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
 126         DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 127         DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 128         DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
 129
 130         DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 131         DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 132
 133         DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
 134         DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
 135
 136         DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
 137
 138         DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 139         DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 140         DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
 141         DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
 142         DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
 143         DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
 144
 145         DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 146
 147         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 148         DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 149         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 150         DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
 151         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 152         DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 153         DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 154         DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 155
 156         DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 157         DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 158         DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED),
 159         DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
 160         DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 161
 162         DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED),
 163         DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED),
 164         DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED),
 165
 166         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 167         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 168         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 169         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 170         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 171         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 172         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 173         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED),
 174         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED),
 175         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 176         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 177         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 178         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 179         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 180         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 181         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 182         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 183         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 184         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 185         DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 186         DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 187         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 188         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 189         DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 190         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 191 };
 192
 193 static struct cdevsw drm_cdevsw = {
 194         .d_version =    D_VERSION,
 195         .d_open =       drm_open,
 196         .d_read =       drm_read,
 197         .d_ioctl =      drm_ioctl,
 198         .d_poll =       drm_poll,
 199         .d_mmap =       drm_mmap,
 200         .d_mmap_single = drm_mmap_single,
 201         .d_name =       "drm",
 202         .d_flags =      D_TRACKCLOSE
 203 };
 204
 205 static int drm_msi = 1; /* Enable by default. */
 206 TUNABLE_INT("hw.drm.msi", &drm_msi);
 207 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device");
 208 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1,
 209     "Enable MSI interrupts for drm devices");
 210
 211 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
 212         {0x8086, 0x2772}, /* Intel i945G        */ \
 213         {0x8086, 0x27A2}, /* Intel i945GM       */ \
 214         {0x8086, 0x27AE}, /* Intel i945GME      */ \
 215         {0, 0}
 216 };
 217
 218 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags)
 219 {
 220         int i = 0;
 221
 222         if (dev->driver->use_msi != NULL) {
 223                 int use_msi;
 224
 225                 use_msi = dev->driver->use_msi(dev, flags);
 226
 227                 return (!use_msi);
 228         }
 229
 230         /* TODO: Maybe move this to a callback in i915? */
 231         for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
 232                 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) &&
 233                     (drm_msi_blacklist[i].device == dev->pci_device)) {
 234                         return 1;
 235                 }
 236         }
 237
 238         return 0;
 239 }
 240
 241 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
 242 {
 243         drm_pci_id_list_t *id_entry;
 244         int vendor, device;
 245
 246         vendor = pci_get_vendor(kdev);
 247         device = pci_get_device(kdev);
 248
 249         if (pci_get_class(kdev) != PCIC_DISPLAY
 250             || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
 251                 return ENXIO;
 252
 253         id_entry = drm_find_description(vendor, device, idlist);
 254         if (id_entry != NULL) {
 255                 if (!device_get_desc(kdev)) {
 256                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
 257                         device_set_desc(kdev, id_entry->name);
 258                 }
 259                 return 0;
 260         }
 261
 262         return ENXIO;
 263 }
 264
 265 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
 266 {
 267         struct drm_device *dev;
 268         drm_pci_id_list_t *id_entry;
 269         int error, msicount;
 270
 271         dev = device_get_softc(kdev);
 272
 273         dev->device = kdev;
 274
 275         dev->pci_domain = pci_get_domain(dev->device);
 276         dev->pci_bus = pci_get_bus(dev->device);
 277         dev->pci_slot = pci_get_slot(dev->device);
 278         dev->pci_func = pci_get_function(dev->device);
 279
 280         dev->pci_vendor = pci_get_vendor(dev->device);
 281         dev->pci_device = pci_get_device(dev->device);
 282         dev->pci_subvendor = pci_get_subvendor(dev->device);
 283         dev->pci_subdevice = pci_get_subdevice(dev->device);
 284
 285         id_entry = drm_find_description(dev->pci_vendor,
 286             dev->pci_device, idlist);
 287         dev->id_entry = id_entry;
 288
 289         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
 290                 if (drm_msi &&
 291                     !drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) {
 292                         msicount = pci_msi_count(dev->device);
 293                         DRM_DEBUG("MSI count = %d\n", msicount);
 294                         if (msicount > 1)
 295                                 msicount = 1;
 296
 297                         if (pci_alloc_msi(dev->device, &msicount) == 0) {
 298                                 DRM_INFO("MSI enabled %d message(s)\n",
 299                                     msicount);
 300                                 dev->msi_enabled = 1;
 301                                 dev->irqrid = 1;
 302                         }
 303                 }
 304
 305                 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
 306                     &dev->irqrid, RF_SHAREABLE);
 307                 if (!dev->irqr) {
 308                         return (ENOENT);
 309                 }
 310
 311                 dev->irq = (int) rman_get_start(dev->irqr);
 312         }
 313
 314         mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
 315         mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
 316         mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
 317         mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
 318         mtx_init(&dev->event_lock, "drmev", NULL, MTX_DEF);
 319         sx_init(&dev->dev_struct_lock, "drmslk");
 320
 321         error = drm_load(dev);
 322         if (error)
 323                 goto error;
 324
 325         error = drm_create_cdevs(kdev);
 326         if (error)
 327                 goto error;
 328
 329         return (error);
 330 error:
 331         if (dev->irqr) {
 332                 bus_release_resource(dev->device, SYS_RES_IRQ,
 333                     dev->irqrid, dev->irqr);
 334         }
 335         if (dev->msi_enabled) {
 336                 pci_release_msi(dev->device);
 337         }
 338         return (error);
 339 }
 340
 341 int
 342 drm_create_cdevs(device_t kdev)
 343 {
 344         struct drm_device *dev;
 345         int error, unit;
 346
 347         unit = device_get_unit(kdev);
 348         dev = device_get_softc(kdev);
 349
 350         error = make_dev_p(MAKEDEV_WAITOK | MAKEDEV_CHECKNAME, &dev->devnode,
 351             &drm_cdevsw, 0, DRM_DEV_UID, DRM_DEV_GID,
 352             DRM_DEV_MODE, "dri/card%d", unit);
 353         if (error == 0)
 354                 dev->devnode->si_drv1 = dev;
 355         return (error);
 356 }
 357
 358 int drm_detach(device_t kdev)
 359 {
 360         struct drm_device *dev;
 361
 362         dev = device_get_softc(kdev);
 363         drm_unload(dev);
 364         if (dev->irqr) {
 365                 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid,
 366                     dev->irqr);
 367                 if (dev->msi_enabled) {
 368                         pci_release_msi(dev->device);
 369                         DRM_INFO("MSI released\n");
 370                 }
 371         }
 372         return (0);
 373 }
 374
 375 #ifndef DRM_DEV_NAME
 376 #define DRM_DEV_NAME "drm"
 377 #endif
 378
 379 devclass_t drm_devclass;
 380
 381 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 382     drm_pci_id_list_t *idlist)
 383 {
 384         int i = 0;
 385
 386         for (i = 0; idlist[i].vendor != 0; i++) {
 387                 if ((idlist[i].vendor == vendor) &&
 388                     ((idlist[i].device == device) ||
 389                     (idlist[i].device == 0))) {
 390                         return &idlist[i];
 391                 }
 392         }
 393         return NULL;
 394 }
 395
 396 static int drm_firstopen(struct drm_device *dev)
 397 {
 398         drm_local_map_t *map;
 399         int i;
 400
 401         DRM_LOCK_ASSERT(dev);
 402
 403         /* prebuild the SAREA */
 404         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
 405             _DRM_CONTAINS_LOCK, &map);
 406         if (i != 0)
 407                 return i;
 408
 409         if (dev->driver->firstopen)
 410                 dev->driver->firstopen(dev);
 411
 412         dev->buf_use = 0;
 413
 414         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
 415                 i = drm_dma_setup(dev);
 416                 if (i != 0)
 417                         return i;
 418         }
 419
 420         for (i = 0; i < DRM_HASH_SIZE; i++) {
 421                 dev->magiclist[i].head = NULL;
 422                 dev->magiclist[i].tail = NULL;
 423         }
 424
 425         dev->lock.lock_queue = 0;
 426         if (!drm_core_check_feature(dev, DRIVER_MODESET))
 427                 dev->irq_enabled = 0;
 428         dev->context_flag = 0;
 429         dev->last_context = 0;
 430         dev->if_version = 0;
 431
 432         dev->buf_sigio = NULL;
 433
 434         DRM_DEBUG("\n");
 435
 436         return 0;
 437 }
 438
 439 static int drm_lastclose(struct drm_device *dev)
 440 {
 441         drm_magic_entry_t *pt, *next;
 442         drm_local_map_t *map, *mapsave;
 443         int i;
 444
 445         DRM_LOCK_ASSERT(dev);
 446
 447         DRM_DEBUG("\n");
 448
 449         if (dev->driver->lastclose != NULL)
 450                 dev->driver->lastclose(dev);
 451
 452         if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled)
 453                 drm_irq_uninstall(dev);
 454
 455         if (dev->unique) {
 456                 free(dev->unique, DRM_MEM_DRIVER);
 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, DRM_MEM_MAGIC);
 465                 }
 466                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 467         }
 468
 469         DRM_UNLOCK(dev);
 470         drm_drawable_free_all(dev);
 471         DRM_LOCK(dev);
 472
 473         /* Clear AGP information */
 474         if (dev->agp) {
 475                 drm_agp_mem_t *entry;
 476                 drm_agp_mem_t *nexte;
 477
 478                 /* Remove AGP resources, but leave dev->agp intact until
 479                  * drm_unload is called.
 480                  */
 481                 for (entry = dev->agp->memory; entry; entry = nexte) {
 482                         nexte = entry->next;
 483                         if (entry->bound)
 484                                 drm_agp_unbind_memory(entry->handle);
 485                         drm_agp_free_memory(entry->handle);
 486                         free(entry, DRM_MEM_AGPLISTS);
 487                 }
 488                 dev->agp->memory = NULL;
 489
 490                 if (dev->agp->acquired)
 491                         drm_agp_release(dev);
 492
 493                 dev->agp->acquired = 0;
 494                 dev->agp->enabled  = 0;
 495         }
 496         if (dev->sg != NULL) {
 497                 drm_sg_cleanup(dev->sg);
 498                 dev->sg = NULL;
 499         }
 500
 501         TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
 502                 if (!(map->flags & _DRM_DRIVER))
 503                         drm_rmmap(dev, map);
 504         }
 505
 506         drm_dma_takedown(dev);
 507         if (dev->lock.hw_lock) {
 508                 dev->lock.hw_lock = NULL; /* SHM removed */
 509                 dev->lock.file_priv = NULL;
 510                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 511         }
 512
 513         return 0;
 514 }
 515
 516 static int drm_load(struct drm_device *dev)
 517 {
 518         int i, retcode;
 519
 520         DRM_DEBUG("\n");
 521
 522         TAILQ_INIT(&dev->maplist);
 523         dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL);
 524         if (dev->map_unrhdr == NULL) {
 525                 DRM_ERROR("Couldn't allocate map number allocator\n");
 526                 return EINVAL;
 527         }
 528
 529
 530         drm_mem_init();
 531         drm_sysctl_init(dev);
 532         TAILQ_INIT(&dev->files);
 533
 534         dev->counters  = 6;
 535         dev->types[0]  = _DRM_STAT_LOCK;
 536         dev->types[1]  = _DRM_STAT_OPENS;
 537         dev->types[2]  = _DRM_STAT_CLOSES;
 538         dev->types[3]  = _DRM_STAT_IOCTLS;
 539         dev->types[4]  = _DRM_STAT_LOCKS;
 540         dev->types[5]  = _DRM_STAT_UNLOCKS;
 541
 542         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 543                 atomic_set(&dev->counts[i], 0);
 544
 545         INIT_LIST_HEAD(&dev->vblank_event_list);
 546
 547         if (drm_core_has_AGP(dev)) {
 548                 if (drm_device_is_agp(dev))
 549                         dev->agp = drm_agp_init();
 550                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 551                     dev->agp == NULL) {
 552                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 553                             "AGP.\n");
 554                         retcode = ENOMEM;
 555                         goto error;
 556                 }
 557                 if (dev->agp != NULL && dev->agp->info.ai_aperture_base != 0) {
 558                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
 559                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
 560                                 dev->agp->mtrr = 1;
 561                 }
 562         }
 563
 564         retcode = drm_ctxbitmap_init(dev);
 565         if (retcode != 0) {
 566                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 567                 goto error;
 568         }
 569
 570         dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
 571         if (dev->drw_unrhdr == NULL) {
 572                 DRM_ERROR("Couldn't allocate drawable number allocator\n");
 573                 retcode = ENOMEM;
 574                 goto error;
 575         }
 576
 577         if (dev->driver->driver_features & DRIVER_GEM) {
 578                 retcode = drm_gem_init(dev);
 579                 if (retcode != 0) {
 580                         DRM_ERROR("Cannot initialize graphics execution "
 581                                   "manager (GEM)\n");
 582                         goto error1;
 583                 }
 584         }
 585
 586         if (dev->driver->load != NULL) {
 587                 DRM_LOCK(dev);
 588                 /* Shared code returns -errno. */
 589                 retcode = -dev->driver->load(dev,
 590                     dev->id_entry->driver_private);
 591                 if (pci_enable_busmaster(dev->device))
 592                         DRM_ERROR("Request to enable bus-master failed.\n");
 593                 DRM_UNLOCK(dev);
 594                 if (retcode != 0)
 595                         goto error1;
 596         }
 597
 598         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 599             dev->driver->name,
 600             dev->driver->major,
 601             dev->driver->minor,
 602             dev->driver->patchlevel,
 603             dev->driver->date);
 604
 605         return 0;
 606
 607 error1:
 608         delete_unrhdr(dev->drw_unrhdr);
 609         drm_gem_destroy(dev);
 610 error:
 611         drm_ctxbitmap_cleanup(dev);
 612         drm_sysctl_cleanup(dev);
 613         DRM_LOCK(dev);
 614         drm_lastclose(dev);
 615         DRM_UNLOCK(dev);
 616         if (dev->devnode != NULL)
 617                 destroy_dev(dev->devnode);
 618
 619         mtx_destroy(&dev->drw_lock);
 620         mtx_destroy(&dev->vbl_lock);
 621         mtx_destroy(&dev->irq_lock);
 622         mtx_destroy(&dev->dev_lock);
 623         mtx_destroy(&dev->event_lock);
 624         sx_destroy(&dev->dev_struct_lock);
 625
 626         return retcode;
 627 }
 628
 629 static void drm_unload(struct drm_device *dev)
 630 {
 631         int i;
 632
 633         DRM_DEBUG("\n");
 634
 635         drm_sysctl_cleanup(dev);
 636         if (dev->devnode != NULL)
 637                 destroy_dev(dev->devnode);
 638
 639         drm_ctxbitmap_cleanup(dev);
 640
 641         if (dev->driver->driver_features & DRIVER_GEM)
 642                 drm_gem_destroy(dev);
 643
 644         if (dev->agp && dev->agp->mtrr) {
 645                 int __unused retcode;
 646
 647                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
 648                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
 649                 DRM_DEBUG("mtrr_del = %d", retcode);
 650         }
 651
 652         drm_vblank_cleanup(dev);
 653
 654         DRM_LOCK(dev);
 655         drm_lastclose(dev);
 656         DRM_UNLOCK(dev);
 657
 658         /* Clean up PCI resources allocated by drm_bufs.c.  We're not really
 659          * worried about resource consumption while the DRM is inactive (between
 660          * lastclose and firstopen or unload) because these aren't actually
 661          * taking up KVA, just keeping the PCI resource allocated.
 662          */
 663         for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
 664                 if (dev->pcir[i] == NULL)
 665                         continue;
 666                 bus_release_resource(dev->device, SYS_RES_MEMORY,
 667                     dev->pcirid[i], dev->pcir[i]);
 668                 dev->pcir[i] = NULL;
 669         }
 670
 671         if (dev->agp) {
 672                 free(dev->agp, DRM_MEM_AGPLISTS);
 673                 dev->agp = NULL;
 674         }
 675
 676         if (dev->driver->unload != NULL) {
 677                 DRM_LOCK(dev);
 678                 dev->driver->unload(dev);
 679                 DRM_UNLOCK(dev);
 680         }
 681
 682         delete_unrhdr(dev->drw_unrhdr);
 683         delete_unrhdr(dev->map_unrhdr);
 684
 685         drm_mem_uninit();
 686
 687         if (pci_disable_busmaster(dev->device))
 688                 DRM_ERROR("Request to disable bus-master failed.\n");
 689
 690         mtx_destroy(&dev->drw_lock);
 691         mtx_destroy(&dev->vbl_lock);
 692         mtx_destroy(&dev->irq_lock);
 693         mtx_destroy(&dev->dev_lock);
 694         mtx_destroy(&dev->event_lock);
 695         sx_destroy(&dev->dev_struct_lock);
 696 }
 697
 698 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 699 {
 700         struct drm_version *version = data;
 701         int len;
 702
 703 #define DRM_COPY( name, value )                                         \
 704         len = strlen( value );                                          \
 705         if ( len > name##_len ) len = name##_len;                       \
 706         name##_len = strlen( value );                                   \
 707         if ( len && name ) {                                            \
 708                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 709                         return EFAULT;                          \
 710         }
 711
 712         version->version_major          = dev->driver->major;
 713         version->version_minor          = dev->driver->minor;
 714         version->version_patchlevel     = dev->driver->patchlevel;
 715
 716         DRM_COPY(version->name, dev->driver->name);
 717         DRM_COPY(version->date, dev->driver->date);
 718         DRM_COPY(version->desc, dev->driver->desc);
 719
 720         return 0;
 721 }
 722
 723 int
 724 drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
 725 {
 726         struct drm_device *dev;
 727         int retcode;
 728
 729         dev = kdev->si_drv1;
 730         if (dev == NULL)
 731                 return (ENXIO);
 732
 733         DRM_DEBUG("open_count = %d\n", dev->open_count);
 734
 735         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
 736
 737         if (retcode == 0) {
 738                 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
 739                 DRM_LOCK(dev);
 740                 mtx_lock(&Giant);
 741                 device_busy(dev->device);
 742                 mtx_unlock(&Giant);
 743                 if (!dev->open_count++)
 744                         retcode = drm_firstopen(dev);
 745                 DRM_UNLOCK(dev);
 746         }
 747
 748         return (retcode);
 749 }
 750
 751 void drm_close(void *data)
 752 {
 753         struct drm_file *file_priv = data;
 754         struct drm_device *dev = file_priv->dev;
 755         int retcode = 0;
 756
 757         DRM_DEBUG("open_count = %d\n", dev->open_count);
 758
 759         DRM_LOCK(dev);
 760
 761         if (dev->driver->preclose != NULL)
 762                 dev->driver->preclose(dev, file_priv);
 763
 764         /* ========================================================
 765          * Begin inline drm_release
 766          */
 767
 768         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 769             DRM_CURRENTPID, (long)dev->device, dev->open_count);
 770
 771         if (dev->driver->driver_features & DRIVER_GEM)
 772                 drm_gem_release(dev, file_priv);
 773
 774         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 775             && dev->lock.file_priv == file_priv) {
 776                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 777                           DRM_CURRENTPID,
 778                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 779                 if (dev->driver->reclaim_buffers_locked != NULL)
 780                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 781
 782                 drm_lock_free(&dev->lock,
 783                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 784
 785                                 /* FIXME: may require heavy-handed reset of
 786                                    hardware at this point, possibly
 787                                    processed via a callback to the X
 788                                    server. */
 789         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 790             dev->lock.hw_lock != NULL) {
 791                 /* The lock is required to reclaim buffers */
 792                 for (;;) {
 793                         if (!dev->lock.hw_lock) {
 794                                 /* Device has been unregistered */
 795                                 retcode = EINTR;
 796                                 break;
 797                         }
 798                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 799                                 dev->lock.file_priv = file_priv;
 800                                 dev->lock.lock_time = jiffies;
 801                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 802                                 break;  /* Got lock */
 803                         }
 804                         /* Contention */
 805                         retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue,
 806                             PCATCH, "drmlk2", 0);
 807                         if (retcode)
 808                                 break;
 809                 }
 810                 if (retcode == 0) {
 811                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 812                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
 813                 }
 814         }
 815
 816         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
 817             !dev->driver->reclaim_buffers_locked)
 818                 drm_reclaim_buffers(dev, file_priv);
 819
 820         funsetown(&dev->buf_sigio);
 821         seldrain(&file_priv->event_poll);
 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, DRM_MEM_FILES);
 827
 828         /* ========================================================
 829          * End inline drm_release
 830          */
 831
 832         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
 833         mtx_lock(&Giant);
 834         device_unbusy(dev->device);
 835         mtx_unlock(&Giant);
 836         if (--dev->open_count == 0) {
 837                 retcode = drm_lastclose(dev);
 838         }
 839
 840         DRM_UNLOCK(dev);
 841 }
 842
 843 extern drm_ioctl_desc_t drm_compat_ioctls[];
 844
 845 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 846  */
 847 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
 848     DRM_STRUCTPROC *p)
 849 {
 850         struct drm_device *dev = drm_get_device_from_kdev(kdev);
 851         int retcode = 0;
 852         drm_ioctl_desc_t *ioctl;
 853         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 854         int nr = DRM_IOCTL_NR(cmd);
 855         int is_driver_ioctl = 0;
 856         struct drm_file *file_priv;
 857
 858         retcode = devfs_get_cdevpriv((void **)&file_priv);
 859         if (retcode != 0) {
 860                 DRM_ERROR("can't find authenticator\n");
 861                 return EINVAL;
 862         }
 863
 864         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 865         ++file_priv->ioctl_count;
 866
 867         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 868             DRM_CURRENTPID, cmd, nr, (long)dev->device,
 869             file_priv->authenticated);
 870
 871         switch (cmd) {
 872         case FIONBIO:
 873         case FIOASYNC:
 874                 return 0;
 875
 876         case FIOSETOWN:
 877                 return fsetown(*(int *)data, &dev->buf_sigio);
 878
 879         case FIOGETOWN:
 880                 *(int *) data = fgetown(&dev->buf_sigio);
 881                 return 0;
 882         }
 883
 884         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 885                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 886                 return EINVAL;
 887         }
 888
 889 #ifdef COMPAT_FREEBSD32
 890         /*
 891          * Called whenever a 32-bit process running under a 64-bit
 892          * kernel performs an ioctl on /dev/drm.
 893          */
 894         if (SV_CURPROC_FLAG(SV_ILP32) && drm_compat_ioctls[nr].func != NULL)
 895                 /*
 896                  * Assume that ioctls without an explicit compat
 897                  * routine will just work.  This may not always be a
 898                  * good assumption, but it's better than always
 899                  * failing.
 900                  */
 901                 ioctl = &drm_compat_ioctls[nr];
 902         else
 903 #endif
 904                 ioctl = &drm_ioctls[nr];
 905         /* It's not a core DRM ioctl, try driver-specific. */
 906         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 907                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 908                 nr -= DRM_COMMAND_BASE;
 909                 if (nr > dev->driver->max_ioctl) {
 910                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
 911                             nr, dev->driver->max_ioctl);
 912                         return EINVAL;
 913                 }
 914 #ifdef COMPAT_FREEBSD32
 915                 if (SV_CURPROC_FLAG(SV_ILP32) &&
 916                     nr < *dev->driver->compat_ioctls_nr &&
 917                     dev->driver->compat_ioctls[nr].func != NULL)
 918                         ioctl = &dev->driver->compat_ioctls[nr];
 919                 else
 920 #endif
 921                         ioctl = &dev->driver->ioctls[nr];
 922                 is_driver_ioctl = 1;
 923         }
 924         func = ioctl->func;
 925
 926         if (func == NULL) {
 927                 DRM_DEBUG("no function\n");
 928                 return EINVAL;
 929         }
 930
 931         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 932             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 933             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 934                 return EACCES;
 935
 936         if (is_driver_ioctl) {
 937                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 938                         DRM_LOCK(dev);
 939                 /* shared code returns -errno */
 940                 retcode = -func(dev, data, file_priv);
 941                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 942                         DRM_UNLOCK(dev);
 943         } else {
 944                 retcode = func(dev, data, file_priv);
 945         }
 946
 947         if (retcode != 0)
 948                 DRM_DEBUG("    returning %d\n", retcode);
 949         if (retcode != 0 &&
 950             (drm_debug_flag & DRM_DEBUGBITS_FAILED_IOCTL) != 0) {
 951                 printf(
 952 "pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n",
 953                     DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->device,
 954                     file_priv->authenticated, retcode);
 955         }
 956
 957         return retcode;
 958 }
 959
 960 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 961 {
 962         drm_local_map_t *map;
 963
 964         DRM_LOCK_ASSERT(dev);
 965         TAILQ_FOREACH(map, &dev->maplist, link) {
 966                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
 967                         return map;
 968         }
 969
 970         return NULL;
 971 }
 972
 973 int
 974 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx,
 975     struct sysctl_oid *top)
 976 {
 977         struct sysctl_oid *oid;
 978
 979         snprintf(dev->busid_str, sizeof(dev->busid_str),
 980              "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus,
 981              dev->pci_slot, dev->pci_func);
 982         oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid",
 983             CTLFLAG_RD, dev->busid_str, 0, NULL);
 984         if (oid == NULL)
 985                 return (ENOMEM);
 986         dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0;
 987         oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO,
 988             "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL);
 989         if (oid == NULL)
 990                 return (ENOMEM);
 991
 992         return (0);
 993 }
 994
 995 static int
 996 drm_mmap_single(struct cdev *kdev, vm_ooffset_t *offset, vm_size_t size,
 997     struct vm_object **obj_res, int nprot)
 998 {
 999         struct drm_device *dev;
1000
1001         dev = drm_get_device_from_kdev(kdev);
1002         if (dev->drm_ttm_bdev != NULL) {
1003                 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size,
1004                     obj_res, nprot));
1005         } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) {
1006                 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot));
1007         } else {
1008                 return (ENODEV);
1009         }
1010 }
1011
1012 #if DRM_LINUX
1013
1014 #include <sys/sysproto.h>
1015
1016 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
1017
1018 #define LINUX_IOCTL_DRM_MIN             0x6400
1019 #define LINUX_IOCTL_DRM_MAX             0x64ff
1020
1021 static linux_ioctl_function_t drm_linux_ioctl;
1022 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
1023     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
1024
1025 /* The bits for in/out are switched on Linux */
1026 #define LINUX_IOC_IN    IOC_OUT
1027 #define LINUX_IOC_OUT   IOC_IN
1028
1029 static int
1030 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
1031 {
1032         int error;
1033         int cmd = args->cmd;
1034
1035         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
1036         if (cmd & LINUX_IOC_IN)
1037                 args->cmd |= IOC_IN;
1038         if (cmd & LINUX_IOC_OUT)
1039                 args->cmd |= IOC_OUT;
1040
1041         error = ioctl(p, (struct ioctl_args *)args);
1042
1043         return error;
1044 }
1045 #endif /* DRM_LINUX */
1046
1047
1048 static int
1049 drm_core_init(void *arg)
1050 {
1051
1052         drm_global_init();
1053
1054 #if DRM_LINUX
1055         linux_ioctl_register_handler(&drm_handler);
1056 #endif /* DRM_LINUX */
1057
1058         DRM_INFO("Initialized %s %d.%d.%d %s\n",
1059                  CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
1060         return 0;
1061 }
1062
1063 static void
1064 drm_core_exit(void *arg)
1065 {
1066
1067 #if DRM_LINUX
1068         linux_ioctl_unregister_handler(&drm_handler);
1069 #endif /* DRM_LINUX */
1070
1071         drm_global_release();
1072 }
1073
1074 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
1075     drm_core_init, NULL);
1076 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
1077     drm_core_exit, NULL);
1078
1079 bool
1080 dmi_check_system(const struct dmi_system_id *sysid)
1081 {
1082
1083         /* XXXKIB */
1084         return (false);
1085 }