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 static int drm_load(struct drm_device *dev);
  60 static void drm_unload(struct drm_device *dev);
  61 static drm_pci_id_list_t *drm_find_description(int vendor, int device,
  62     drm_pci_id_list_t *idlist);
  63 static int drm_mmap_single(struct cdev *kdev, vm_ooffset_t *offset,
  64     vm_size_t size, struct vm_object **obj_res, int nprot);
  65
  66 static int
  67 drm_modevent(module_t mod, int type, void *data)
  68 {
  69
  70         switch (type) {
  71         case MOD_LOAD:
  72                 TUNABLE_INT_FETCH("drm.debug", &drm_debug_flag);
  73                 TUNABLE_INT_FETCH("drm.notyet", &drm_notyet_flag);
  74                 break;
  75         }
  76         return (0);
  77 }
  78
  79 static moduledata_t drm_mod = {
  80         "drmn",
  81         drm_modevent,
  82         0
  83 };
  84 DECLARE_MODULE(drmn, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
  85 MODULE_VERSION(drmn, 1);
  86 MODULE_DEPEND(drmn, agp, 1, 1, 1);
  87 MODULE_DEPEND(drmn, pci, 1, 1, 1);
  88 MODULE_DEPEND(drmn, mem, 1, 1, 1);
  89 MODULE_DEPEND(drmn, iicbus, 1, 1, 1);
  90
  91 static drm_ioctl_desc_t           drm_ioctls[256] = {
  92         DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
  93         DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
  94         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
  95         DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
  96         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
  97         DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
  98         DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
  99         DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED),
 100         DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
 101
 102         DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 103         DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 104         DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 105         DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 106
 107         DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 108         DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
 109
 110         DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 111         DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
 112
 113         DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY),
 114         DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY),
 115
 116         DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
 117         DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 118         DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 119         DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
 120         DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 121         DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 122         DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
 123
 124         DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 125         DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 126
 127         DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
 128         DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
 129
 130         DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
 131
 132         DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 133         DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 134         DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
 135         DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
 136         DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
 137         DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
 138
 139         DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 140
 141         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 142         DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 143         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 144         DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
 145         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 146         DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 147         DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 148         DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 149
 150         DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 151         DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 152         DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED),
 153         DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
 154         DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 155
 156         DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED),
 157         DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED),
 158         DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED),
 159
 160         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 161         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 162         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 163         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 164         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 165         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 166         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 167         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED),
 168         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED),
 169         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 170         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 171         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 172         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 173         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 174         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 175         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 176         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 177         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 178         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 179         DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 180         DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 181         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 182         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 183         DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 184         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 185 };
 186
 187 static struct cdevsw drm_cdevsw = {
 188         .d_version =    D_VERSION,
 189         .d_open =       drm_open,
 190         .d_read =       drm_read,
 191         .d_ioctl =      drm_ioctl,
 192         .d_poll =       drm_poll,
 193         .d_mmap =       drm_mmap,
 194         .d_mmap_single = drm_mmap_single,
 195         .d_name =       "drm",
 196         .d_flags =      D_TRACKCLOSE
 197 };
 198
 199 static int drm_msi = 1; /* Enable by default. */
 200 TUNABLE_INT("hw.drm.msi", &drm_msi);
 201 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device");
 202 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1,
 203     "Enable MSI interrupts for drm devices");
 204
 205 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
 206         {0x8086, 0x2772}, /* Intel i945G        */ \
 207         {0x8086, 0x27A2}, /* Intel i945GM       */ \
 208         {0x8086, 0x27AE}, /* Intel i945GME      */ \
 209         {0, 0}
 210 };
 211
 212 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags)
 213 {
 214         int i = 0;
 215
 216         if (dev->driver->use_msi != NULL) {
 217                 int use_msi;
 218
 219                 use_msi = dev->driver->use_msi(dev, flags);
 220
 221                 return (!use_msi);
 222         }
 223
 224         /* TODO: Maybe move this to a callback in i915? */
 225         for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
 226                 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) &&
 227                     (drm_msi_blacklist[i].device == dev->pci_device)) {
 228                         return 1;
 229                 }
 230         }
 231
 232         return 0;
 233 }
 234
 235 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
 236 {
 237         drm_pci_id_list_t *id_entry;
 238         int vendor, device;
 239
 240         vendor = pci_get_vendor(kdev);
 241         device = pci_get_device(kdev);
 242
 243         if (pci_get_class(kdev) != PCIC_DISPLAY
 244             || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
 245                 return ENXIO;
 246
 247         id_entry = drm_find_description(vendor, device, idlist);
 248         if (id_entry != NULL) {
 249                 if (!device_get_desc(kdev)) {
 250                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
 251                         device_set_desc(kdev, id_entry->name);
 252                 }
 253                 return 0;
 254         }
 255
 256         return ENXIO;
 257 }
 258
 259 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
 260 {
 261         struct drm_device *dev;
 262         drm_pci_id_list_t *id_entry;
 263         int error, msicount;
 264
 265         dev = device_get_softc(kdev);
 266
 267         dev->device = kdev;
 268
 269         dev->pci_domain = pci_get_domain(dev->device);
 270         dev->pci_bus = pci_get_bus(dev->device);
 271         dev->pci_slot = pci_get_slot(dev->device);
 272         dev->pci_func = pci_get_function(dev->device);
 273
 274         dev->pci_vendor = pci_get_vendor(dev->device);
 275         dev->pci_device = pci_get_device(dev->device);
 276         dev->pci_subvendor = pci_get_subvendor(dev->device);
 277         dev->pci_subdevice = pci_get_subdevice(dev->device);
 278
 279         id_entry = drm_find_description(dev->pci_vendor,
 280             dev->pci_device, idlist);
 281         dev->id_entry = id_entry;
 282
 283         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
 284                 if (drm_msi &&
 285                     !drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) {
 286                         msicount = pci_msi_count(dev->device);
 287                         DRM_DEBUG("MSI count = %d\n", msicount);
 288                         if (msicount > 1)
 289                                 msicount = 1;
 290
 291                         if (pci_alloc_msi(dev->device, &msicount) == 0) {
 292                                 DRM_INFO("MSI enabled %d message(s)\n",
 293                                     msicount);
 294                                 dev->msi_enabled = 1;
 295                                 dev->irqrid = 1;
 296                         }
 297                 }
 298
 299                 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
 300                     &dev->irqrid, RF_SHAREABLE);
 301                 if (!dev->irqr) {
 302                         return (ENOENT);
 303                 }
 304
 305                 dev->irq = (int) rman_get_start(dev->irqr);
 306         }
 307
 308         mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
 309         mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
 310         mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
 311         mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
 312         mtx_init(&dev->event_lock, "drmev", NULL, MTX_DEF);
 313         sx_init(&dev->dev_struct_lock, "drmslk");
 314
 315         error = drm_load(dev);
 316         if (error)
 317                 goto error;
 318
 319         error = drm_create_cdevs(kdev);
 320         if (error)
 321                 goto error;
 322
 323         return (error);
 324 error:
 325         if (dev->irqr) {
 326                 bus_release_resource(dev->device, SYS_RES_IRQ,
 327                     dev->irqrid, dev->irqr);
 328         }
 329         if (dev->msi_enabled) {
 330                 pci_release_msi(dev->device);
 331         }
 332         return (error);
 333 }
 334
 335 int
 336 drm_create_cdevs(device_t kdev)
 337 {
 338         struct drm_device *dev;
 339         int error, unit;
 340
 341         unit = device_get_unit(kdev);
 342         dev = device_get_softc(kdev);
 343
 344         error = make_dev_p(MAKEDEV_WAITOK | MAKEDEV_CHECKNAME, &dev->devnode,
 345             &drm_cdevsw, 0, DRM_DEV_UID, DRM_DEV_GID,
 346             DRM_DEV_MODE, "dri/card%d", unit);
 347         if (error == 0)
 348                 dev->devnode->si_drv1 = dev;
 349         return (error);
 350 }
 351
 352 int drm_detach(device_t kdev)
 353 {
 354         struct drm_device *dev;
 355
 356         dev = device_get_softc(kdev);
 357         drm_unload(dev);
 358         if (dev->irqr) {
 359                 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid,
 360                     dev->irqr);
 361                 if (dev->msi_enabled) {
 362                         pci_release_msi(dev->device);
 363                         DRM_INFO("MSI released\n");
 364                 }
 365         }
 366         return (0);
 367 }
 368
 369 #ifndef DRM_DEV_NAME
 370 #define DRM_DEV_NAME "drm"
 371 #endif
 372
 373 devclass_t drm_devclass;
 374
 375 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 376     drm_pci_id_list_t *idlist)
 377 {
 378         int i = 0;
 379
 380         for (i = 0; idlist[i].vendor != 0; i++) {
 381                 if ((idlist[i].vendor == vendor) &&
 382                     ((idlist[i].device == device) ||
 383                     (idlist[i].device == 0))) {
 384                         return &idlist[i];
 385                 }
 386         }
 387         return NULL;
 388 }
 389
 390 static int drm_firstopen(struct drm_device *dev)
 391 {
 392         drm_local_map_t *map;
 393         int i;
 394
 395         DRM_LOCK_ASSERT(dev);
 396
 397         /* prebuild the SAREA */
 398         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
 399             _DRM_CONTAINS_LOCK, &map);
 400         if (i != 0)
 401                 return i;
 402
 403         if (dev->driver->firstopen)
 404                 dev->driver->firstopen(dev);
 405
 406         dev->buf_use = 0;
 407
 408         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
 409                 i = drm_dma_setup(dev);
 410                 if (i != 0)
 411                         return i;
 412         }
 413
 414         for (i = 0; i < DRM_HASH_SIZE; i++) {
 415                 dev->magiclist[i].head = NULL;
 416                 dev->magiclist[i].tail = NULL;
 417         }
 418
 419         dev->lock.lock_queue = 0;
 420         if (!drm_core_check_feature(dev, DRIVER_MODESET))
 421                 dev->irq_enabled = 0;
 422         dev->context_flag = 0;
 423         dev->last_context = 0;
 424         dev->if_version = 0;
 425
 426         dev->buf_sigio = NULL;
 427
 428         DRM_DEBUG("\n");
 429
 430         return 0;
 431 }
 432
 433 static int drm_lastclose(struct drm_device *dev)
 434 {
 435         drm_magic_entry_t *pt, *next;
 436         drm_local_map_t *map, *mapsave;
 437         int i;
 438
 439         DRM_LOCK_ASSERT(dev);
 440
 441         DRM_DEBUG("\n");
 442
 443         if (dev->driver->lastclose != NULL)
 444                 dev->driver->lastclose(dev);
 445
 446         if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled)
 447                 drm_irq_uninstall(dev);
 448
 449         if (dev->unique) {
 450                 free(dev->unique, DRM_MEM_DRIVER);
 451                 dev->unique = NULL;
 452                 dev->unique_len = 0;
 453         }
 454         /* Clear pid list */
 455         for (i = 0; i < DRM_HASH_SIZE; i++) {
 456                 for (pt = dev->magiclist[i].head; pt; pt = next) {
 457                         next = pt->next;
 458                         free(pt, DRM_MEM_MAGIC);
 459                 }
 460                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 461         }
 462
 463         DRM_UNLOCK(dev);
 464         drm_drawable_free_all(dev);
 465         DRM_LOCK(dev);
 466
 467         /* Clear AGP information */
 468         if (dev->agp) {
 469                 drm_agp_mem_t *entry;
 470                 drm_agp_mem_t *nexte;
 471
 472                 /* Remove AGP resources, but leave dev->agp intact until
 473                  * drm_unload is called.
 474                  */
 475                 for (entry = dev->agp->memory; entry; entry = nexte) {
 476                         nexte = entry->next;
 477                         if (entry->bound)
 478                                 drm_agp_unbind_memory(entry->handle);
 479                         drm_agp_free_memory(entry->handle);
 480                         free(entry, DRM_MEM_AGPLISTS);
 481                 }
 482                 dev->agp->memory = NULL;
 483
 484                 if (dev->agp->acquired)
 485                         drm_agp_release(dev);
 486
 487                 dev->agp->acquired = 0;
 488                 dev->agp->enabled  = 0;
 489         }
 490         if (dev->sg != NULL) {
 491                 drm_sg_cleanup(dev->sg);
 492                 dev->sg = NULL;
 493         }
 494
 495         TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
 496                 if (!(map->flags & _DRM_DRIVER))
 497                         drm_rmmap(dev, map);
 498         }
 499
 500         drm_dma_takedown(dev);
 501         if (dev->lock.hw_lock) {
 502                 dev->lock.hw_lock = NULL; /* SHM removed */
 503                 dev->lock.file_priv = NULL;
 504                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 505         }
 506
 507         return 0;
 508 }
 509
 510 static int drm_load(struct drm_device *dev)
 511 {
 512         int i, retcode;
 513
 514         DRM_DEBUG("\n");
 515
 516         TAILQ_INIT(&dev->maplist);
 517         dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL);
 518         if (dev->map_unrhdr == NULL) {
 519                 DRM_ERROR("Couldn't allocate map number allocator\n");
 520                 return EINVAL;
 521         }
 522
 523
 524         drm_mem_init();
 525         drm_sysctl_init(dev);
 526         TAILQ_INIT(&dev->files);
 527
 528         dev->counters  = 6;
 529         dev->types[0]  = _DRM_STAT_LOCK;
 530         dev->types[1]  = _DRM_STAT_OPENS;
 531         dev->types[2]  = _DRM_STAT_CLOSES;
 532         dev->types[3]  = _DRM_STAT_IOCTLS;
 533         dev->types[4]  = _DRM_STAT_LOCKS;
 534         dev->types[5]  = _DRM_STAT_UNLOCKS;
 535
 536         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 537                 atomic_set(&dev->counts[i], 0);
 538
 539         INIT_LIST_HEAD(&dev->vblank_event_list);
 540
 541         if (drm_core_has_AGP(dev)) {
 542                 if (drm_device_is_agp(dev))
 543                         dev->agp = drm_agp_init();
 544                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 545                     dev->agp == NULL) {
 546                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 547                             "AGP.\n");
 548                         retcode = ENOMEM;
 549                         goto error;
 550                 }
 551                 if (dev->agp != NULL && dev->agp->info.ai_aperture_base != 0) {
 552                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
 553                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
 554                                 dev->agp->mtrr = 1;
 555                 }
 556         }
 557
 558         retcode = drm_ctxbitmap_init(dev);
 559         if (retcode != 0) {
 560                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 561                 goto error;
 562         }
 563
 564         dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
 565         if (dev->drw_unrhdr == NULL) {
 566                 DRM_ERROR("Couldn't allocate drawable number allocator\n");
 567                 retcode = ENOMEM;
 568                 goto error;
 569         }
 570
 571         if (dev->driver->driver_features & DRIVER_GEM) {
 572                 retcode = drm_gem_init(dev);
 573                 if (retcode != 0) {
 574                         DRM_ERROR("Cannot initialize graphics execution "
 575                                   "manager (GEM)\n");
 576                         goto error1;
 577                 }
 578         }
 579
 580         if (dev->driver->load != NULL) {
 581                 DRM_LOCK(dev);
 582                 /* Shared code returns -errno. */
 583                 retcode = -dev->driver->load(dev,
 584                     dev->id_entry->driver_private);
 585                 if (pci_enable_busmaster(dev->device))
 586                         DRM_ERROR("Request to enable bus-master failed.\n");
 587                 DRM_UNLOCK(dev);
 588                 if (retcode != 0)
 589                         goto error1;
 590         }
 591
 592         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 593             dev->driver->name,
 594             dev->driver->major,
 595             dev->driver->minor,
 596             dev->driver->patchlevel,
 597             dev->driver->date);
 598
 599         return 0;
 600
 601 error1:
 602         delete_unrhdr(dev->drw_unrhdr);
 603         drm_gem_destroy(dev);
 604 error:
 605         drm_ctxbitmap_cleanup(dev);
 606         drm_sysctl_cleanup(dev);
 607         DRM_LOCK(dev);
 608         drm_lastclose(dev);
 609         DRM_UNLOCK(dev);
 610         if (dev->devnode != NULL)
 611                 destroy_dev(dev->devnode);
 612
 613         mtx_destroy(&dev->drw_lock);
 614         mtx_destroy(&dev->vbl_lock);
 615         mtx_destroy(&dev->irq_lock);
 616         mtx_destroy(&dev->dev_lock);
 617         mtx_destroy(&dev->event_lock);
 618         sx_destroy(&dev->dev_struct_lock);
 619
 620         return retcode;
 621 }
 622
 623 static void drm_unload(struct drm_device *dev)
 624 {
 625         int i;
 626
 627         DRM_DEBUG("\n");
 628
 629         drm_sysctl_cleanup(dev);
 630         if (dev->devnode != NULL)
 631                 destroy_dev(dev->devnode);
 632
 633         drm_ctxbitmap_cleanup(dev);
 634
 635         if (dev->driver->driver_features & DRIVER_GEM)
 636                 drm_gem_destroy(dev);
 637
 638         if (dev->agp && dev->agp->mtrr) {
 639                 int __unused retcode;
 640
 641                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
 642                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
 643                 DRM_DEBUG("mtrr_del = %d", retcode);
 644         }
 645
 646         drm_vblank_cleanup(dev);
 647
 648         DRM_LOCK(dev);
 649         drm_lastclose(dev);
 650         DRM_UNLOCK(dev);
 651
 652         /* Clean up PCI resources allocated by drm_bufs.c.  We're not really
 653          * worried about resource consumption while the DRM is inactive (between
 654          * lastclose and firstopen or unload) because these aren't actually
 655          * taking up KVA, just keeping the PCI resource allocated.
 656          */
 657         for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
 658                 if (dev->pcir[i] == NULL)
 659                         continue;
 660                 bus_release_resource(dev->device, SYS_RES_MEMORY,
 661                     dev->pcirid[i], dev->pcir[i]);
 662                 dev->pcir[i] = NULL;
 663         }
 664
 665         if (dev->agp) {
 666                 free(dev->agp, DRM_MEM_AGPLISTS);
 667                 dev->agp = NULL;
 668         }
 669
 670         if (dev->driver->unload != NULL) {
 671                 DRM_LOCK(dev);
 672                 dev->driver->unload(dev);
 673                 DRM_UNLOCK(dev);
 674         }
 675
 676         delete_unrhdr(dev->drw_unrhdr);
 677         delete_unrhdr(dev->map_unrhdr);
 678
 679         drm_mem_uninit();
 680
 681         if (pci_disable_busmaster(dev->device))
 682                 DRM_ERROR("Request to disable bus-master failed.\n");
 683
 684         mtx_destroy(&dev->drw_lock);
 685         mtx_destroy(&dev->vbl_lock);
 686         mtx_destroy(&dev->irq_lock);
 687         mtx_destroy(&dev->dev_lock);
 688         mtx_destroy(&dev->event_lock);
 689         sx_destroy(&dev->dev_struct_lock);
 690 }
 691
 692 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 693 {
 694         struct drm_version *version = data;
 695         int len;
 696
 697 #define DRM_COPY( name, value )                                         \
 698         len = strlen( value );                                          \
 699         if ( len > name##_len ) len = name##_len;                       \
 700         name##_len = strlen( value );                                   \
 701         if ( len && name ) {                                            \
 702                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 703                         return EFAULT;                          \
 704         }
 705
 706         version->version_major          = dev->driver->major;
 707         version->version_minor          = dev->driver->minor;
 708         version->version_patchlevel     = dev->driver->patchlevel;
 709
 710         DRM_COPY(version->name, dev->driver->name);
 711         DRM_COPY(version->date, dev->driver->date);
 712         DRM_COPY(version->desc, dev->driver->desc);
 713
 714         return 0;
 715 }
 716
 717 int
 718 drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
 719 {
 720         struct drm_device *dev;
 721         int retcode;
 722
 723         dev = kdev->si_drv1;
 724         if (dev == NULL)
 725                 return (ENXIO);
 726
 727         DRM_DEBUG("open_count = %d\n", dev->open_count);
 728
 729         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
 730
 731         if (retcode == 0) {
 732                 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
 733                 DRM_LOCK(dev);
 734                 mtx_lock(&Giant);
 735                 device_busy(dev->device);
 736                 mtx_unlock(&Giant);
 737                 if (!dev->open_count++)
 738                         retcode = drm_firstopen(dev);
 739                 DRM_UNLOCK(dev);
 740         }
 741
 742         return (retcode);
 743 }
 744
 745 void drm_close(void *data)
 746 {
 747         struct drm_file *file_priv = data;
 748         struct drm_device *dev = file_priv->dev;
 749         int retcode = 0;
 750
 751         DRM_DEBUG("open_count = %d\n", dev->open_count);
 752
 753         DRM_LOCK(dev);
 754
 755         if (dev->driver->preclose != NULL)
 756                 dev->driver->preclose(dev, file_priv);
 757
 758         /* ========================================================
 759          * Begin inline drm_release
 760          */
 761
 762         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 763             DRM_CURRENTPID, (long)dev->device, dev->open_count);
 764
 765         if (dev->driver->driver_features & DRIVER_GEM)
 766                 drm_gem_release(dev, file_priv);
 767
 768         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 769             && dev->lock.file_priv == file_priv) {
 770                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 771                           DRM_CURRENTPID,
 772                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 773                 if (dev->driver->reclaim_buffers_locked != NULL)
 774                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 775
 776                 drm_lock_free(&dev->lock,
 777                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 778
 779                                 /* FIXME: may require heavy-handed reset of
 780                                    hardware at this point, possibly
 781                                    processed via a callback to the X
 782                                    server. */
 783         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 784             dev->lock.hw_lock != NULL) {
 785                 /* The lock is required to reclaim buffers */
 786                 for (;;) {
 787                         if (!dev->lock.hw_lock) {
 788                                 /* Device has been unregistered */
 789                                 retcode = EINTR;
 790                                 break;
 791                         }
 792                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 793                                 dev->lock.file_priv = file_priv;
 794                                 dev->lock.lock_time = jiffies;
 795                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 796                                 break;  /* Got lock */
 797                         }
 798                         /* Contention */
 799                         retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue,
 800                             PCATCH, "drmlk2", 0);
 801                         if (retcode)
 802                                 break;
 803                 }
 804                 if (retcode == 0) {
 805                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 806                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
 807                 }
 808         }
 809
 810         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
 811             !dev->driver->reclaim_buffers_locked)
 812                 drm_reclaim_buffers(dev, file_priv);
 813
 814         funsetown(&dev->buf_sigio);
 815         seldrain(&file_priv->event_poll);
 816
 817         if (dev->driver->postclose != NULL)
 818                 dev->driver->postclose(dev, file_priv);
 819         TAILQ_REMOVE(&dev->files, file_priv, link);
 820         free(file_priv, DRM_MEM_FILES);
 821
 822         /* ========================================================
 823          * End inline drm_release
 824          */
 825
 826         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
 827         mtx_lock(&Giant);
 828         device_unbusy(dev->device);
 829         mtx_unlock(&Giant);
 830         if (--dev->open_count == 0) {
 831                 retcode = drm_lastclose(dev);
 832         }
 833
 834         DRM_UNLOCK(dev);
 835 }
 836
 837 extern drm_ioctl_desc_t drm_compat_ioctls[];
 838
 839 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 840  */
 841 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
 842     DRM_STRUCTPROC *p)
 843 {
 844         struct drm_device *dev = drm_get_device_from_kdev(kdev);
 845         int retcode = 0;
 846         drm_ioctl_desc_t *ioctl;
 847         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 848         int nr = DRM_IOCTL_NR(cmd);
 849         int is_driver_ioctl = 0;
 850         struct drm_file *file_priv;
 851
 852         retcode = devfs_get_cdevpriv((void **)&file_priv);
 853         if (retcode != 0) {
 854                 DRM_ERROR("can't find authenticator\n");
 855                 return EINVAL;
 856         }
 857
 858         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 859         ++file_priv->ioctl_count;
 860
 861         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 862             DRM_CURRENTPID, cmd, nr, (long)dev->device,
 863             file_priv->authenticated);
 864
 865         switch (cmd) {
 866         case FIONBIO:
 867         case FIOASYNC:
 868                 return 0;
 869
 870         case FIOSETOWN:
 871                 return fsetown(*(int *)data, &dev->buf_sigio);
 872
 873         case FIOGETOWN:
 874                 *(int *) data = fgetown(&dev->buf_sigio);
 875                 return 0;
 876         }
 877
 878         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 879                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 880                 return EINVAL;
 881         }
 882
 883 #ifdef COMPAT_FREEBSD32
 884         /*
 885          * Called whenever a 32-bit process running under a 64-bit
 886          * kernel performs an ioctl on /dev/drm.
 887          */
 888         if (SV_CURPROC_FLAG(SV_ILP32) && drm_compat_ioctls[nr].func != NULL)
 889                 /*
 890                  * Assume that ioctls without an explicit compat
 891                  * routine will just work.  This may not always be a
 892                  * good assumption, but it's better than always
 893                  * failing.
 894                  */
 895                 ioctl = &drm_compat_ioctls[nr];
 896         else
 897 #endif
 898                 ioctl = &drm_ioctls[nr];
 899         /* It's not a core DRM ioctl, try driver-specific. */
 900         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 901                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 902                 nr -= DRM_COMMAND_BASE;
 903                 if (nr > dev->driver->max_ioctl) {
 904                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
 905                             nr, dev->driver->max_ioctl);
 906                         return EINVAL;
 907                 }
 908 #ifdef COMPAT_FREEBSD32
 909                 if (SV_CURPROC_FLAG(SV_ILP32) &&
 910                     nr < *dev->driver->compat_ioctls_nr &&
 911                     dev->driver->compat_ioctls[nr].func != NULL)
 912                         ioctl = &dev->driver->compat_ioctls[nr];
 913                 else
 914 #endif
 915                         ioctl = &dev->driver->ioctls[nr];
 916                 is_driver_ioctl = 1;
 917         }
 918         func = ioctl->func;
 919
 920         if (func == NULL) {
 921                 DRM_DEBUG("no function\n");
 922                 return EINVAL;
 923         }
 924
 925         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 926             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 927             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 928                 return EACCES;
 929
 930         if (is_driver_ioctl) {
 931                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 932                         DRM_LOCK(dev);
 933                 /* shared code returns -errno */
 934                 retcode = -func(dev, data, file_priv);
 935                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 936                         DRM_UNLOCK(dev);
 937         } else {
 938                 retcode = func(dev, data, file_priv);
 939         }
 940
 941         if (retcode != 0)
 942                 DRM_DEBUG("    returning %d\n", retcode);
 943         if (retcode != 0 &&
 944             (drm_debug_flag & DRM_DEBUGBITS_FAILED_IOCTL) != 0) {
 945                 printf(
 946 "pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n",
 947                     DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->device,
 948                     file_priv->authenticated, retcode);
 949         }
 950
 951         return retcode;
 952 }
 953
 954 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 955 {
 956         drm_local_map_t *map;
 957
 958         DRM_LOCK_ASSERT(dev);
 959         TAILQ_FOREACH(map, &dev->maplist, link) {
 960                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
 961                         return map;
 962         }
 963
 964         return NULL;
 965 }
 966
 967 int
 968 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx,
 969     struct sysctl_oid *top)
 970 {
 971         struct sysctl_oid *oid;
 972
 973         snprintf(dev->busid_str, sizeof(dev->busid_str),
 974              "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus,
 975              dev->pci_slot, dev->pci_func);
 976         oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid",
 977             CTLFLAG_RD, dev->busid_str, 0, NULL);
 978         if (oid == NULL)
 979                 return (ENOMEM);
 980         dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0;
 981         oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO,
 982             "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL);
 983         if (oid == NULL)
 984                 return (ENOMEM);
 985
 986         return (0);
 987 }
 988
 989 static int
 990 drm_mmap_single(struct cdev *kdev, vm_ooffset_t *offset, vm_size_t size,
 991     struct vm_object **obj_res, int nprot)
 992 {
 993         struct drm_device *dev;
 994
 995         dev = drm_get_device_from_kdev(kdev);
 996         if (dev->drm_ttm_bdev != NULL) {
 997                 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size,
 998                     obj_res, nprot));
 999         } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) {
1000                 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot));
1001         } else {
1002                 return (ENODEV);
1003         }
1004 }
1005
1006 #if DRM_LINUX
1007
1008 #include <sys/sysproto.h>
1009
1010 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
1011
1012 #define LINUX_IOCTL_DRM_MIN             0x6400
1013 #define LINUX_IOCTL_DRM_MAX             0x64ff
1014
1015 static linux_ioctl_function_t drm_linux_ioctl;
1016 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
1017     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
1018
1019 /* The bits for in/out are switched on Linux */
1020 #define LINUX_IOC_IN    IOC_OUT
1021 #define LINUX_IOC_OUT   IOC_IN
1022
1023 static int
1024 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
1025 {
1026         int error;
1027         int cmd = args->cmd;
1028
1029         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
1030         if (cmd & LINUX_IOC_IN)
1031                 args->cmd |= IOC_IN;
1032         if (cmd & LINUX_IOC_OUT)
1033                 args->cmd |= IOC_OUT;
1034
1035         error = ioctl(p, (struct ioctl_args *)args);
1036
1037         return error;
1038 }
1039 #endif /* DRM_LINUX */
1040
1041
1042 static int
1043 drm_core_init(void *arg)
1044 {
1045
1046         drm_global_init();
1047
1048 #if DRM_LINUX
1049         linux_ioctl_register_handler(&drm_handler);
1050 #endif /* DRM_LINUX */
1051
1052         DRM_INFO("Initialized %s %d.%d.%d %s\n",
1053                  CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
1054         return 0;
1055 }
1056
1057 static void
1058 drm_core_exit(void *arg)
1059 {
1060
1061 #if DRM_LINUX
1062         linux_ioctl_unregister_handler(&drm_handler);
1063 #endif /* DRM_LINUX */
1064
1065         drm_global_release();
1066 }
1067
1068 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
1069     drm_core_init, NULL);
1070 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
1071     drm_core_exit, NULL);
1072
1073 bool
1074 dmi_check_system(const struct dmi_system_id *sysid)
1075 {
1076
1077         /* XXXKIB */
1078         return (false);
1079 }