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 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device");
 207 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1,
 208     "Enable MSI interrupts for drm devices");
 209
 210 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
 211         {0x8086, 0x2772}, /* Intel i945G        */ \
 212         {0x8086, 0x27A2}, /* Intel i945GM       */ \
 213         {0x8086, 0x27AE}, /* Intel i945GME      */ \
 214         {0, 0}
 215 };
 216
 217 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags)
 218 {
 219         int i = 0;
 220
 221         if (dev->driver->use_msi != NULL) {
 222                 int use_msi;
 223
 224                 use_msi = dev->driver->use_msi(dev, flags);
 225
 226                 return (!use_msi);
 227         }
 228
 229         /* TODO: Maybe move this to a callback in i915? */
 230         for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
 231                 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) &&
 232                     (drm_msi_blacklist[i].device == dev->pci_device)) {
 233                         return 1;
 234                 }
 235         }
 236
 237         return 0;
 238 }
 239
 240 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
 241 {
 242         drm_pci_id_list_t *id_entry;
 243         int vendor, device;
 244
 245         vendor = pci_get_vendor(kdev);
 246         device = pci_get_device(kdev);
 247
 248         if (pci_get_class(kdev) != PCIC_DISPLAY
 249             || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
 250                 return ENXIO;
 251
 252         id_entry = drm_find_description(vendor, device, idlist);
 253         if (id_entry != NULL) {
 254                 if (!device_get_desc(kdev)) {
 255                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
 256                         device_set_desc(kdev, id_entry->name);
 257                 }
 258                 return 0;
 259         }
 260
 261         return ENXIO;
 262 }
 263
 264 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
 265 {
 266         struct drm_device *dev;
 267         drm_pci_id_list_t *id_entry;
 268         int error, msicount;
 269
 270         dev = device_get_softc(kdev);
 271
 272         dev->device = kdev;
 273
 274         dev->pci_domain = pci_get_domain(dev->device);
 275         dev->pci_bus = pci_get_bus(dev->device);
 276         dev->pci_slot = pci_get_slot(dev->device);
 277         dev->pci_func = pci_get_function(dev->device);
 278
 279         dev->pci_vendor = pci_get_vendor(dev->device);
 280         dev->pci_device = pci_get_device(dev->device);
 281         dev->pci_subvendor = pci_get_subvendor(dev->device);
 282         dev->pci_subdevice = pci_get_subdevice(dev->device);
 283
 284         id_entry = drm_find_description(dev->pci_vendor,
 285             dev->pci_device, idlist);
 286         dev->id_entry = id_entry;
 287
 288         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
 289                 if (drm_msi &&
 290                     !drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) {
 291                         msicount = pci_msi_count(dev->device);
 292                         DRM_DEBUG("MSI count = %d\n", msicount);
 293                         if (msicount > 1)
 294                                 msicount = 1;
 295
 296                         if (pci_alloc_msi(dev->device, &msicount) == 0) {
 297                                 DRM_INFO("MSI enabled %d message(s)\n",
 298                                     msicount);
 299                                 dev->msi_enabled = 1;
 300                                 dev->irqrid = 1;
 301                         }
 302                 }
 303
 304                 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
 305                     &dev->irqrid, RF_SHAREABLE);
 306                 if (!dev->irqr) {
 307                         return (ENOENT);
 308                 }
 309
 310                 dev->irq = (int) rman_get_start(dev->irqr);
 311         }
 312
 313         mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
 314         mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
 315         mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
 316         mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
 317         mtx_init(&dev->event_lock, "drmev", NULL, MTX_DEF);
 318         sx_init(&dev->dev_struct_lock, "drmslk");
 319
 320         error = drm_load(dev);
 321         if (error)
 322                 goto error;
 323
 324         error = drm_create_cdevs(kdev);
 325         if (error)
 326                 goto error;
 327
 328         return (error);
 329 error:
 330         if (dev->irqr) {
 331                 bus_release_resource(dev->device, SYS_RES_IRQ,
 332                     dev->irqrid, dev->irqr);
 333         }
 334         if (dev->msi_enabled) {
 335                 pci_release_msi(dev->device);
 336         }
 337         return (error);
 338 }
 339
 340 int
 341 drm_create_cdevs(device_t kdev)
 342 {
 343         struct drm_device *dev;
 344         int error, unit;
 345
 346         unit = device_get_unit(kdev);
 347         dev = device_get_softc(kdev);
 348
 349         error = make_dev_p(MAKEDEV_WAITOK | MAKEDEV_CHECKNAME, &dev->devnode,
 350             &drm_cdevsw, 0, DRM_DEV_UID, DRM_DEV_GID,
 351             DRM_DEV_MODE, "dri/card%d", unit);
 352         if (error == 0)
 353                 dev->devnode->si_drv1 = dev;
 354         return (error);
 355 }
 356
 357 int drm_detach(device_t kdev)
 358 {
 359         struct drm_device *dev;
 360
 361         dev = device_get_softc(kdev);
 362         drm_unload(dev);
 363         if (dev->irqr) {
 364                 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid,
 365                     dev->irqr);
 366                 if (dev->msi_enabled) {
 367                         pci_release_msi(dev->device);
 368                         DRM_INFO("MSI released\n");
 369                 }
 370         }
 371         return (0);
 372 }
 373
 374 #ifndef DRM_DEV_NAME
 375 #define DRM_DEV_NAME "drm"
 376 #endif
 377
 378 devclass_t drm_devclass;
 379
 380 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 381     drm_pci_id_list_t *idlist)
 382 {
 383         int i = 0;
 384
 385         for (i = 0; idlist[i].vendor != 0; i++) {
 386                 if ((idlist[i].vendor == vendor) &&
 387                     ((idlist[i].device == device) ||
 388                     (idlist[i].device == 0))) {
 389                         return &idlist[i];
 390                 }
 391         }
 392         return NULL;
 393 }
 394
 395 static int drm_firstopen(struct drm_device *dev)
 396 {
 397         drm_local_map_t *map;
 398         int i;
 399
 400         DRM_LOCK_ASSERT(dev);
 401
 402         /* prebuild the SAREA */
 403         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
 404             _DRM_CONTAINS_LOCK, &map);
 405         if (i != 0)
 406                 return i;
 407
 408         if (dev->driver->firstopen)
 409                 dev->driver->firstopen(dev);
 410
 411         dev->buf_use = 0;
 412
 413         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
 414                 i = drm_dma_setup(dev);
 415                 if (i != 0)
 416                         return i;
 417         }
 418
 419         for (i = 0; i < DRM_HASH_SIZE; i++) {
 420                 dev->magiclist[i].head = NULL;
 421                 dev->magiclist[i].tail = NULL;
 422         }
 423
 424         dev->lock.lock_queue = 0;
 425         if (!drm_core_check_feature(dev, DRIVER_MODESET))
 426                 dev->irq_enabled = 0;
 427         dev->context_flag = 0;
 428         dev->last_context = 0;
 429         dev->if_version = 0;
 430
 431         dev->buf_sigio = NULL;
 432
 433         DRM_DEBUG("\n");
 434
 435         return 0;
 436 }
 437
 438 static int drm_lastclose(struct drm_device *dev)
 439 {
 440         drm_magic_entry_t *pt, *next;
 441         drm_local_map_t *map, *mapsave;
 442         int i;
 443
 444         DRM_LOCK_ASSERT(dev);
 445
 446         DRM_DEBUG("\n");
 447
 448         if (dev->driver->lastclose != NULL)
 449                 dev->driver->lastclose(dev);
 450
 451         if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled)
 452                 drm_irq_uninstall(dev);
 453
 454         if (dev->unique) {
 455                 free(dev->unique, DRM_MEM_DRIVER);
 456                 dev->unique = NULL;
 457                 dev->unique_len = 0;
 458         }
 459         /* Clear pid list */
 460         for (i = 0; i < DRM_HASH_SIZE; i++) {
 461                 for (pt = dev->magiclist[i].head; pt; pt = next) {
 462                         next = pt->next;
 463                         free(pt, DRM_MEM_MAGIC);
 464                 }
 465                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 466         }
 467
 468         DRM_UNLOCK(dev);
 469         drm_drawable_free_all(dev);
 470         DRM_LOCK(dev);
 471
 472         /* Clear AGP information */
 473         if (dev->agp) {
 474                 drm_agp_mem_t *entry;
 475                 drm_agp_mem_t *nexte;
 476
 477                 /* Remove AGP resources, but leave dev->agp intact until
 478                  * drm_unload is called.
 479                  */
 480                 for (entry = dev->agp->memory; entry; entry = nexte) {
 481                         nexte = entry->next;
 482                         if (entry->bound)
 483                                 drm_agp_unbind_memory(entry->handle);
 484                         drm_agp_free_memory(entry->handle);
 485                         free(entry, DRM_MEM_AGPLISTS);
 486                 }
 487                 dev->agp->memory = NULL;
 488
 489                 if (dev->agp->acquired)
 490                         drm_agp_release(dev);
 491
 492                 dev->agp->acquired = 0;
 493                 dev->agp->enabled  = 0;
 494         }
 495         if (dev->sg != NULL) {
 496                 drm_sg_cleanup(dev->sg);
 497                 dev->sg = NULL;
 498         }
 499
 500         TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
 501                 if (!(map->flags & _DRM_DRIVER))
 502                         drm_rmmap(dev, map);
 503         }
 504
 505         drm_dma_takedown(dev);
 506         if (dev->lock.hw_lock) {
 507                 dev->lock.hw_lock = NULL; /* SHM removed */
 508                 dev->lock.file_priv = NULL;
 509                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 510         }
 511
 512         return 0;
 513 }
 514
 515 static int drm_load(struct drm_device *dev)
 516 {
 517         int i, retcode;
 518
 519         DRM_DEBUG("\n");
 520
 521         TAILQ_INIT(&dev->maplist);
 522         dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL);
 523         if (dev->map_unrhdr == NULL) {
 524                 DRM_ERROR("Couldn't allocate map number allocator\n");
 525                 return EINVAL;
 526         }
 527
 528
 529         drm_mem_init();
 530         drm_sysctl_init(dev);
 531         TAILQ_INIT(&dev->files);
 532
 533         dev->counters  = 6;
 534         dev->types[0]  = _DRM_STAT_LOCK;
 535         dev->types[1]  = _DRM_STAT_OPENS;
 536         dev->types[2]  = _DRM_STAT_CLOSES;
 537         dev->types[3]  = _DRM_STAT_IOCTLS;
 538         dev->types[4]  = _DRM_STAT_LOCKS;
 539         dev->types[5]  = _DRM_STAT_UNLOCKS;
 540
 541         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 542                 atomic_set(&dev->counts[i], 0);
 543
 544         INIT_LIST_HEAD(&dev->vblank_event_list);
 545
 546         if (drm_core_has_AGP(dev)) {
 547                 if (drm_device_is_agp(dev))
 548                         dev->agp = drm_agp_init();
 549                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 550                     dev->agp == NULL) {
 551                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 552                             "AGP.\n");
 553                         retcode = ENOMEM;
 554                         goto error;
 555                 }
 556                 if (dev->agp != NULL && dev->agp->info.ai_aperture_base != 0) {
 557                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
 558                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
 559                                 dev->agp->mtrr = 1;
 560                 }
 561         }
 562
 563         retcode = drm_ctxbitmap_init(dev);
 564         if (retcode != 0) {
 565                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 566                 goto error;
 567         }
 568
 569         dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
 570         if (dev->drw_unrhdr == NULL) {
 571                 DRM_ERROR("Couldn't allocate drawable number allocator\n");
 572                 retcode = ENOMEM;
 573                 goto error;
 574         }
 575
 576         if (dev->driver->driver_features & DRIVER_GEM) {
 577                 retcode = drm_gem_init(dev);
 578                 if (retcode != 0) {
 579                         DRM_ERROR("Cannot initialize graphics execution "
 580                                   "manager (GEM)\n");
 581                         goto error1;
 582                 }
 583         }
 584
 585         if (dev->driver->load != NULL) {
 586                 DRM_LOCK(dev);
 587                 /* Shared code returns -errno. */
 588                 retcode = -dev->driver->load(dev,
 589                     dev->id_entry->driver_private);
 590                 if (pci_enable_busmaster(dev->device))
 591                         DRM_ERROR("Request to enable bus-master failed.\n");
 592                 DRM_UNLOCK(dev);
 593                 if (retcode != 0)
 594                         goto error1;
 595         }
 596
 597         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 598             dev->driver->name,
 599             dev->driver->major,
 600             dev->driver->minor,
 601             dev->driver->patchlevel,
 602             dev->driver->date);
 603
 604         return 0;
 605
 606 error1:
 607         delete_unrhdr(dev->drw_unrhdr);
 608         drm_gem_destroy(dev);
 609 error:
 610         drm_ctxbitmap_cleanup(dev);
 611         drm_sysctl_cleanup(dev);
 612         DRM_LOCK(dev);
 613         drm_lastclose(dev);
 614         DRM_UNLOCK(dev);
 615         if (dev->devnode != NULL)
 616                 destroy_dev(dev->devnode);
 617
 618         mtx_destroy(&dev->drw_lock);
 619         mtx_destroy(&dev->vbl_lock);
 620         mtx_destroy(&dev->irq_lock);
 621         mtx_destroy(&dev->dev_lock);
 622         mtx_destroy(&dev->event_lock);
 623         sx_destroy(&dev->dev_struct_lock);
 624
 625         return retcode;
 626 }
 627
 628 static void drm_unload(struct drm_device *dev)
 629 {
 630         int i;
 631
 632         DRM_DEBUG("\n");
 633
 634         drm_sysctl_cleanup(dev);
 635         if (dev->devnode != NULL)
 636                 destroy_dev(dev->devnode);
 637
 638         drm_ctxbitmap_cleanup(dev);
 639
 640         if (dev->driver->driver_features & DRIVER_GEM)
 641                 drm_gem_destroy(dev);
 642
 643         if (dev->agp && dev->agp->mtrr) {
 644                 int __unused retcode;
 645
 646                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
 647                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
 648                 DRM_DEBUG("mtrr_del = %d", retcode);
 649         }
 650
 651         drm_vblank_cleanup(dev);
 652
 653         DRM_LOCK(dev);
 654         drm_lastclose(dev);
 655         DRM_UNLOCK(dev);
 656
 657         /* Clean up PCI resources allocated by drm_bufs.c.  We're not really
 658          * worried about resource consumption while the DRM is inactive (between
 659          * lastclose and firstopen or unload) because these aren't actually
 660          * taking up KVA, just keeping the PCI resource allocated.
 661          */
 662         for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
 663                 if (dev->pcir[i] == NULL)
 664                         continue;
 665                 bus_release_resource(dev->device, SYS_RES_MEMORY,
 666                     dev->pcirid[i], dev->pcir[i]);
 667                 dev->pcir[i] = NULL;
 668         }
 669
 670         if (dev->agp) {
 671                 free(dev->agp, DRM_MEM_AGPLISTS);
 672                 dev->agp = NULL;
 673         }
 674
 675         if (dev->driver->unload != NULL) {
 676                 DRM_LOCK(dev);
 677                 dev->driver->unload(dev);
 678                 DRM_UNLOCK(dev);
 679         }
 680
 681         delete_unrhdr(dev->drw_unrhdr);
 682         delete_unrhdr(dev->map_unrhdr);
 683
 684         drm_mem_uninit();
 685
 686         if (pci_disable_busmaster(dev->device))
 687                 DRM_ERROR("Request to disable bus-master failed.\n");
 688
 689         mtx_destroy(&dev->drw_lock);
 690         mtx_destroy(&dev->vbl_lock);
 691         mtx_destroy(&dev->irq_lock);
 692         mtx_destroy(&dev->dev_lock);
 693         mtx_destroy(&dev->event_lock);
 694         sx_destroy(&dev->dev_struct_lock);
 695 }
 696
 697 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 698 {
 699         struct drm_version *version = data;
 700         int len;
 701
 702 #define DRM_COPY( name, value )                                         \
 703         len = strlen( value );                                          \
 704         if ( len > name##_len ) len = name##_len;                       \
 705         name##_len = strlen( value );                                   \
 706         if ( len && name ) {                                            \
 707                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 708                         return EFAULT;                          \
 709         }
 710
 711         version->version_major          = dev->driver->major;
 712         version->version_minor          = dev->driver->minor;
 713         version->version_patchlevel     = dev->driver->patchlevel;
 714
 715         DRM_COPY(version->name, dev->driver->name);
 716         DRM_COPY(version->date, dev->driver->date);
 717         DRM_COPY(version->desc, dev->driver->desc);
 718
 719         return 0;
 720 }
 721
 722 int
 723 drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
 724 {
 725         struct drm_device *dev;
 726         int retcode;
 727
 728         dev = kdev->si_drv1;
 729         if (dev == NULL)
 730                 return (ENXIO);
 731
 732         DRM_DEBUG("open_count = %d\n", dev->open_count);
 733
 734         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
 735
 736         if (retcode == 0) {
 737                 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
 738                 DRM_LOCK(dev);
 739                 mtx_lock(&Giant);
 740                 device_busy(dev->device);
 741                 mtx_unlock(&Giant);
 742                 if (!dev->open_count++)
 743                         retcode = drm_firstopen(dev);
 744                 DRM_UNLOCK(dev);
 745         }
 746
 747         return (retcode);
 748 }
 749
 750 void drm_close(void *data)
 751 {
 752         struct drm_file *file_priv = data;
 753         struct drm_device *dev = file_priv->dev;
 754         int retcode = 0;
 755
 756         DRM_DEBUG("open_count = %d\n", dev->open_count);
 757
 758         DRM_LOCK(dev);
 759
 760         if (dev->driver->preclose != NULL)
 761                 dev->driver->preclose(dev, file_priv);
 762
 763         /* ========================================================
 764          * Begin inline drm_release
 765          */
 766
 767         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 768             DRM_CURRENTPID, (long)dev->device, dev->open_count);
 769
 770         if (dev->driver->driver_features & DRIVER_GEM)
 771                 drm_gem_release(dev, file_priv);
 772
 773         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 774             && dev->lock.file_priv == file_priv) {
 775                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 776                           DRM_CURRENTPID,
 777                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 778                 if (dev->driver->reclaim_buffers_locked != NULL)
 779                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 780
 781                 drm_lock_free(&dev->lock,
 782                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 783
 784                                 /* FIXME: may require heavy-handed reset of
 785                                    hardware at this point, possibly
 786                                    processed via a callback to the X
 787                                    server. */
 788         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 789             dev->lock.hw_lock != NULL) {
 790                 /* The lock is required to reclaim buffers */
 791                 for (;;) {
 792                         if (!dev->lock.hw_lock) {
 793                                 /* Device has been unregistered */
 794                                 retcode = EINTR;
 795                                 break;
 796                         }
 797                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 798                                 dev->lock.file_priv = file_priv;
 799                                 dev->lock.lock_time = jiffies;
 800                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 801                                 break;  /* Got lock */
 802                         }
 803                         /* Contention */
 804                         retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue,
 805                             PCATCH, "drmlk2", 0);
 806                         if (retcode)
 807                                 break;
 808                 }
 809                 if (retcode == 0) {
 810                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 811                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
 812                 }
 813         }
 814
 815         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
 816             !dev->driver->reclaim_buffers_locked)
 817                 drm_reclaim_buffers(dev, file_priv);
 818
 819         funsetown(&dev->buf_sigio);
 820         seldrain(&file_priv->event_poll);
 821
 822         if (dev->driver->postclose != NULL)
 823                 dev->driver->postclose(dev, file_priv);
 824         TAILQ_REMOVE(&dev->files, file_priv, link);
 825         free(file_priv, DRM_MEM_FILES);
 826
 827         /* ========================================================
 828          * End inline drm_release
 829          */
 830
 831         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
 832         mtx_lock(&Giant);
 833         device_unbusy(dev->device);
 834         mtx_unlock(&Giant);
 835         if (--dev->open_count == 0) {
 836                 retcode = drm_lastclose(dev);
 837         }
 838
 839         DRM_UNLOCK(dev);
 840 }
 841
 842 extern drm_ioctl_desc_t drm_compat_ioctls[];
 843
 844 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 845  */
 846 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
 847     DRM_STRUCTPROC *p)
 848 {
 849         struct drm_device *dev = drm_get_device_from_kdev(kdev);
 850         int retcode = 0;
 851         drm_ioctl_desc_t *ioctl;
 852         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 853         int nr = DRM_IOCTL_NR(cmd);
 854         int is_driver_ioctl = 0;
 855         struct drm_file *file_priv;
 856
 857         retcode = devfs_get_cdevpriv((void **)&file_priv);
 858         if (retcode != 0) {
 859                 DRM_ERROR("can't find authenticator\n");
 860                 return EINVAL;
 861         }
 862
 863         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 864         ++file_priv->ioctl_count;
 865
 866         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 867             DRM_CURRENTPID, cmd, nr, (long)dev->device,
 868             file_priv->authenticated);
 869
 870         switch (cmd) {
 871         case FIONBIO:
 872         case FIOASYNC:
 873                 return 0;
 874
 875         case FIOSETOWN:
 876                 return fsetown(*(int *)data, &dev->buf_sigio);
 877
 878         case FIOGETOWN:
 879                 *(int *) data = fgetown(&dev->buf_sigio);
 880                 return 0;
 881         }
 882
 883         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 884                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 885                 return EINVAL;
 886         }
 887
 888 #ifdef COMPAT_FREEBSD32
 889         /*
 890          * Called whenever a 32-bit process running under a 64-bit
 891          * kernel performs an ioctl on /dev/drm.
 892          */
 893         if (SV_CURPROC_FLAG(SV_ILP32) && drm_compat_ioctls[nr].func != NULL)
 894                 /*
 895                  * Assume that ioctls without an explicit compat
 896                  * routine will just work.  This may not always be a
 897                  * good assumption, but it's better than always
 898                  * failing.
 899                  */
 900                 ioctl = &drm_compat_ioctls[nr];
 901         else
 902 #endif
 903                 ioctl = &drm_ioctls[nr];
 904         /* It's not a core DRM ioctl, try driver-specific. */
 905         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 906                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 907                 nr -= DRM_COMMAND_BASE;
 908                 if (nr >= dev->driver->max_ioctl) {
 909                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
 910                             nr, dev->driver->max_ioctl);
 911                         return EINVAL;
 912                 }
 913 #ifdef COMPAT_FREEBSD32
 914                 if (SV_CURPROC_FLAG(SV_ILP32) &&
 915                     nr < *dev->driver->compat_ioctls_nr &&
 916                     dev->driver->compat_ioctls[nr].func != NULL)
 917                         ioctl = &dev->driver->compat_ioctls[nr];
 918                 else
 919 #endif
 920                         ioctl = &dev->driver->ioctls[nr];
 921                 is_driver_ioctl = 1;
 922         }
 923         func = ioctl->func;
 924
 925         if (func == NULL) {
 926                 DRM_DEBUG("no function\n");
 927                 return EINVAL;
 928         }
 929
 930         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 931             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 932             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 933                 return EACCES;
 934
 935         if (is_driver_ioctl) {
 936                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 937                         DRM_LOCK(dev);
 938                 /* shared code returns -errno */
 939                 retcode = -func(dev, data, file_priv);
 940                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 941                         DRM_UNLOCK(dev);
 942         } else {
 943                 retcode = func(dev, data, file_priv);
 944         }
 945
 946         if (retcode != 0)
 947                 DRM_DEBUG("    returning %d\n", retcode);
 948         if (retcode != 0 &&
 949             (drm_debug_flag & DRM_DEBUGBITS_FAILED_IOCTL) != 0) {
 950                 printf(
 951 "pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n",
 952                     DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->device,
 953                     file_priv->authenticated, retcode);
 954         }
 955
 956         return retcode;
 957 }
 958
 959 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 960 {
 961         drm_local_map_t *map;
 962
 963         DRM_LOCK_ASSERT(dev);
 964         TAILQ_FOREACH(map, &dev->maplist, link) {
 965                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
 966                         return map;
 967         }
 968
 969         return NULL;
 970 }
 971
 972 int
 973 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx,
 974     struct sysctl_oid *top)
 975 {
 976         struct sysctl_oid *oid;
 977
 978         snprintf(dev->busid_str, sizeof(dev->busid_str),
 979              "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus,
 980              dev->pci_slot, dev->pci_func);
 981         oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid",
 982             CTLFLAG_RD, dev->busid_str, 0, NULL);
 983         if (oid == NULL)
 984                 return (ENOMEM);
 985         dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0;
 986         oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO,
 987             "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL);
 988         if (oid == NULL)
 989                 return (ENOMEM);
 990
 991         return (0);
 992 }
 993
 994 static int
 995 drm_mmap_single(struct cdev *kdev, vm_ooffset_t *offset, vm_size_t size,
 996     struct vm_object **obj_res, int nprot)
 997 {
 998         struct drm_device *dev;
 999
1000         dev = drm_get_device_from_kdev(kdev);
1001         if (dev->drm_ttm_bdev != NULL) {
1002                 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size,
1003                     obj_res, nprot));
1004         } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) {
1005                 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot));
1006         } else {
1007                 return (ENODEV);
1008         }
1009 }
1010
1011 #if DRM_LINUX
1012
1013 #include <sys/sysproto.h>
1014
1015 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
1016
1017 #define LINUX_IOCTL_DRM_MIN             0x6400
1018 #define LINUX_IOCTL_DRM_MAX             0x64ff
1019
1020 static linux_ioctl_function_t drm_linux_ioctl;
1021 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
1022     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
1023
1024 /* The bits for in/out are switched on Linux */
1025 #define LINUX_IOC_IN    IOC_OUT
1026 #define LINUX_IOC_OUT   IOC_IN
1027
1028 static int
1029 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
1030 {
1031         int error;
1032         int cmd = args->cmd;
1033
1034         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
1035         if (cmd & LINUX_IOC_IN)
1036                 args->cmd |= IOC_IN;
1037         if (cmd & LINUX_IOC_OUT)
1038                 args->cmd |= IOC_OUT;
1039
1040         error = ioctl(p, (struct ioctl_args *)args);
1041
1042         return error;
1043 }
1044 #endif /* DRM_LINUX */
1045
1046
1047 static int
1048 drm_core_init(void *arg)
1049 {
1050
1051         drm_global_init();
1052
1053 #if DRM_LINUX
1054         linux_ioctl_register_handler(&drm_handler);
1055 #endif /* DRM_LINUX */
1056
1057         DRM_INFO("Initialized %s %d.%d.%d %s\n",
1058                  CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
1059         return 0;
1060 }
1061
1062 static void
1063 drm_core_exit(void *arg)
1064 {
1065
1066 #if DRM_LINUX
1067         linux_ioctl_unregister_handler(&drm_handler);
1068 #endif /* DRM_LINUX */
1069
1070         drm_global_release();
1071 }
1072
1073 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
1074     drm_core_init, NULL);
1075 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
1076     drm_core_exit, NULL);
1077
1078 bool
1079 dmi_check_system(const struct dmi_system_id *sysid)
1080 {
1081
1082         /* XXXKIB */
1083         return (false);
1084 }