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         DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 192         DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 193 };
 194
 195 static struct cdevsw drm_cdevsw = {
 196         .d_version =    D_VERSION,
 197         .d_open =       drm_open,
 198         .d_read =       drm_read,
 199         .d_ioctl =      drm_ioctl,
 200         .d_poll =       drm_poll,
 201         .d_mmap =       drm_mmap,
 202         .d_mmap_single = drm_mmap_single,
 203         .d_name =       "drm",
 204         .d_flags =      D_TRACKCLOSE
 205 };
 206
 207 static int drm_msi = 1; /* Enable by default. */
 208 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device");
 209 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1,
 210     "Enable MSI interrupts for drm devices");
 211
 212 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
 213         {0x8086, 0x2772}, /* Intel i945G        */ \
 214         {0x8086, 0x27A2}, /* Intel i945GM       */ \
 215         {0x8086, 0x27AE}, /* Intel i945GME      */ \
 216         {0, 0}
 217 };
 218
 219 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags)
 220 {
 221         int i = 0;
 222
 223         if (dev->driver->use_msi != NULL) {
 224                 int use_msi;
 225
 226                 use_msi = dev->driver->use_msi(dev, flags);
 227
 228                 return (!use_msi);
 229         }
 230
 231         /* TODO: Maybe move this to a callback in i915? */
 232         for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
 233                 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) &&
 234                     (drm_msi_blacklist[i].device == dev->pci_device)) {
 235                         return 1;
 236                 }
 237         }
 238
 239         return 0;
 240 }
 241
 242 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
 243 {
 244         drm_pci_id_list_t *id_entry;
 245         int vendor, device;
 246
 247         vendor = pci_get_vendor(kdev);
 248         device = pci_get_device(kdev);
 249
 250         if (pci_get_class(kdev) != PCIC_DISPLAY
 251             || (pci_get_subclass(kdev) != PCIS_DISPLAY_VGA &&
 252             pci_get_subclass(kdev) != PCIS_DISPLAY_OTHER))
 253                 return ENXIO;
 254
 255         id_entry = drm_find_description(vendor, device, idlist);
 256         if (id_entry != NULL) {
 257                 if (!device_get_desc(kdev)) {
 258                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
 259                         device_set_desc(kdev, id_entry->name);
 260                 }
 261                 return 0;
 262         }
 263
 264         return ENXIO;
 265 }
 266
 267 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
 268 {
 269         struct drm_device *dev;
 270         drm_pci_id_list_t *id_entry;
 271         int error, msicount;
 272
 273         dev = device_get_softc(kdev);
 274
 275         dev->device = kdev;
 276
 277         dev->pci_domain = pci_get_domain(dev->device);
 278         dev->pci_bus = pci_get_bus(dev->device);
 279         dev->pci_slot = pci_get_slot(dev->device);
 280         dev->pci_func = pci_get_function(dev->device);
 281
 282         dev->pci_vendor = pci_get_vendor(dev->device);
 283         dev->pci_device = pci_get_device(dev->device);
 284         dev->pci_subvendor = pci_get_subvendor(dev->device);
 285         dev->pci_subdevice = pci_get_subdevice(dev->device);
 286
 287         id_entry = drm_find_description(dev->pci_vendor,
 288             dev->pci_device, idlist);
 289         dev->id_entry = id_entry;
 290
 291         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
 292                 if (drm_msi &&
 293                     !drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) {
 294                         msicount = pci_msi_count(dev->device);
 295                         DRM_DEBUG("MSI count = %d\n", msicount);
 296                         if (msicount > 1)
 297                                 msicount = 1;
 298
 299                         if (pci_alloc_msi(dev->device, &msicount) == 0) {
 300                                 DRM_INFO("MSI enabled %d message(s)\n",
 301                                     msicount);
 302                                 dev->msi_enabled = 1;
 303                                 dev->irqrid = 1;
 304                         }
 305                 }
 306
 307                 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
 308                     &dev->irqrid, RF_SHAREABLE);
 309                 if (!dev->irqr) {
 310                         return (ENOENT);
 311                 }
 312
 313                 dev->irq = (int) rman_get_start(dev->irqr);
 314         }
 315
 316         mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
 317         mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
 318         mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
 319         mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
 320         mtx_init(&dev->event_lock, "drmev", NULL, MTX_DEF);
 321         sx_init(&dev->dev_struct_lock, "drmslk");
 322
 323         error = drm_load(dev);
 324         if (error)
 325                 goto error;
 326
 327         error = drm_create_cdevs(kdev);
 328         if (error)
 329                 goto error;
 330
 331         return (error);
 332 error:
 333         if (dev->irqr) {
 334                 bus_release_resource(dev->device, SYS_RES_IRQ,
 335                     dev->irqrid, dev->irqr);
 336         }
 337         if (dev->msi_enabled) {
 338                 pci_release_msi(dev->device);
 339         }
 340         return (error);
 341 }
 342
 343 int
 344 drm_create_cdevs(device_t kdev)
 345 {
 346         struct drm_device *dev;
 347         int error, unit;
 348
 349         unit = device_get_unit(kdev);
 350         dev = device_get_softc(kdev);
 351
 352         error = make_dev_p(MAKEDEV_WAITOK | MAKEDEV_CHECKNAME, &dev->devnode,
 353             &drm_cdevsw, 0, DRM_DEV_UID, DRM_DEV_GID,
 354             DRM_DEV_MODE, "dri/card%d", unit);
 355         if (error == 0)
 356                 dev->devnode->si_drv1 = dev;
 357         return (error);
 358 }
 359
 360 int drm_detach(device_t kdev)
 361 {
 362         struct drm_device *dev;
 363
 364         dev = device_get_softc(kdev);
 365         drm_unload(dev);
 366         if (dev->irqr) {
 367                 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid,
 368                     dev->irqr);
 369                 if (dev->msi_enabled) {
 370                         pci_release_msi(dev->device);
 371                         DRM_INFO("MSI released\n");
 372                 }
 373         }
 374         return (0);
 375 }
 376
 377 #ifndef DRM_DEV_NAME
 378 #define DRM_DEV_NAME "drm"
 379 #endif
 380
 381 devclass_t drm_devclass;
 382
 383 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 384     drm_pci_id_list_t *idlist)
 385 {
 386         int i = 0;
 387
 388         for (i = 0; idlist[i].vendor != 0; i++) {
 389                 if ((idlist[i].vendor == vendor) &&
 390                     ((idlist[i].device == device) ||
 391                     (idlist[i].device == 0))) {
 392                         return &idlist[i];
 393                 }
 394         }
 395         return NULL;
 396 }
 397
 398 static int drm_firstopen(struct drm_device *dev)
 399 {
 400         drm_local_map_t *map;
 401         int i;
 402
 403         DRM_LOCK_ASSERT(dev);
 404
 405         /* prebuild the SAREA */
 406         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
 407             _DRM_CONTAINS_LOCK, &map);
 408         if (i != 0)
 409                 return i;
 410
 411         if (dev->driver->firstopen)
 412                 dev->driver->firstopen(dev);
 413
 414         dev->buf_use = 0;
 415
 416         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
 417                 i = drm_dma_setup(dev);
 418                 if (i != 0)
 419                         return i;
 420         }
 421
 422         for (i = 0; i < DRM_HASH_SIZE; i++) {
 423                 dev->magiclist[i].head = NULL;
 424                 dev->magiclist[i].tail = NULL;
 425         }
 426
 427         dev->lock.lock_queue = 0;
 428         if (!drm_core_check_feature(dev, DRIVER_MODESET))
 429                 dev->irq_enabled = 0;
 430         dev->context_flag = 0;
 431         dev->last_context = 0;
 432         dev->if_version = 0;
 433
 434         dev->buf_sigio = NULL;
 435
 436         DRM_DEBUG("\n");
 437
 438         return 0;
 439 }
 440
 441 static int drm_lastclose(struct drm_device *dev)
 442 {
 443         drm_magic_entry_t *pt, *next;
 444         drm_local_map_t *map, *mapsave;
 445         int i;
 446
 447         DRM_LOCK_ASSERT(dev);
 448
 449         DRM_DEBUG("\n");
 450
 451         if (dev->driver->lastclose != NULL)
 452                 dev->driver->lastclose(dev);
 453
 454         if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled)
 455                 drm_irq_uninstall(dev);
 456
 457         if (dev->unique) {
 458                 free(dev->unique, DRM_MEM_DRIVER);
 459                 dev->unique = NULL;
 460                 dev->unique_len = 0;
 461         }
 462         /* Clear pid list */
 463         for (i = 0; i < DRM_HASH_SIZE; i++) {
 464                 for (pt = dev->magiclist[i].head; pt; pt = next) {
 465                         next = pt->next;
 466                         free(pt, DRM_MEM_MAGIC);
 467                 }
 468                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 469         }
 470
 471         DRM_UNLOCK(dev);
 472         drm_drawable_free_all(dev);
 473         DRM_LOCK(dev);
 474
 475         /* Clear AGP information */
 476         if (dev->agp) {
 477                 drm_agp_mem_t *entry;
 478                 drm_agp_mem_t *nexte;
 479
 480                 /* Remove AGP resources, but leave dev->agp intact until
 481                  * drm_unload is called.
 482                  */
 483                 for (entry = dev->agp->memory; entry; entry = nexte) {
 484                         nexte = entry->next;
 485                         if (entry->bound)
 486                                 drm_agp_unbind_memory(entry->handle);
 487                         drm_agp_free_memory(entry->handle);
 488                         free(entry, DRM_MEM_AGPLISTS);
 489                 }
 490                 dev->agp->memory = NULL;
 491
 492                 if (dev->agp->acquired)
 493                         drm_agp_release(dev);
 494
 495                 dev->agp->acquired = 0;
 496                 dev->agp->enabled  = 0;
 497         }
 498         if (dev->sg != NULL) {
 499                 drm_sg_cleanup(dev->sg);
 500                 dev->sg = NULL;
 501         }
 502
 503         TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
 504                 if (!(map->flags & _DRM_DRIVER))
 505                         drm_rmmap(dev, map);
 506         }
 507
 508         drm_dma_takedown(dev);
 509         if (dev->lock.hw_lock) {
 510                 dev->lock.hw_lock = NULL; /* SHM removed */
 511                 dev->lock.file_priv = NULL;
 512                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 513         }
 514
 515         return 0;
 516 }
 517
 518 static int drm_load(struct drm_device *dev)
 519 {
 520         int i, retcode;
 521
 522         DRM_DEBUG("\n");
 523
 524         TAILQ_INIT(&dev->maplist);
 525         dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL);
 526         if (dev->map_unrhdr == NULL) {
 527                 DRM_ERROR("Couldn't allocate map number allocator\n");
 528                 return EINVAL;
 529         }
 530
 531
 532         drm_mem_init();
 533         drm_sysctl_init(dev);
 534         TAILQ_INIT(&dev->files);
 535
 536         dev->counters  = 6;
 537         dev->types[0]  = _DRM_STAT_LOCK;
 538         dev->types[1]  = _DRM_STAT_OPENS;
 539         dev->types[2]  = _DRM_STAT_CLOSES;
 540         dev->types[3]  = _DRM_STAT_IOCTLS;
 541         dev->types[4]  = _DRM_STAT_LOCKS;
 542         dev->types[5]  = _DRM_STAT_UNLOCKS;
 543
 544         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 545                 atomic_set(&dev->counts[i], 0);
 546
 547         INIT_LIST_HEAD(&dev->vblank_event_list);
 548
 549         if (drm_core_has_AGP(dev)) {
 550                 if (drm_device_is_agp(dev))
 551                         dev->agp = drm_agp_init();
 552                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 553                     dev->agp == NULL) {
 554                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 555                             "AGP.\n");
 556                         retcode = ENOMEM;
 557                         goto error;
 558                 }
 559                 if (dev->agp != NULL && dev->agp->info.ai_aperture_base != 0) {
 560                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
 561                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
 562                                 dev->agp->mtrr = 1;
 563                 }
 564         }
 565
 566         retcode = drm_ctxbitmap_init(dev);
 567         if (retcode != 0) {
 568                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 569                 goto error;
 570         }
 571
 572         dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
 573         if (dev->drw_unrhdr == NULL) {
 574                 DRM_ERROR("Couldn't allocate drawable number allocator\n");
 575                 retcode = ENOMEM;
 576                 goto error;
 577         }
 578
 579         if (dev->driver->driver_features & DRIVER_GEM) {
 580                 retcode = drm_gem_init(dev);
 581                 if (retcode != 0) {
 582                         DRM_ERROR("Cannot initialize graphics execution "
 583                                   "manager (GEM)\n");
 584                         goto error1;
 585                 }
 586         }
 587
 588         if (dev->driver->load != NULL) {
 589                 DRM_LOCK(dev);
 590                 /* Shared code returns -errno. */
 591                 retcode = -dev->driver->load(dev,
 592                     dev->id_entry->driver_private);
 593                 if (pci_enable_busmaster(dev->device))
 594                         DRM_ERROR("Request to enable bus-master failed.\n");
 595                 DRM_UNLOCK(dev);
 596                 if (retcode != 0)
 597                         goto error1;
 598         }
 599
 600         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 601             dev->driver->name,
 602             dev->driver->major,
 603             dev->driver->minor,
 604             dev->driver->patchlevel,
 605             dev->driver->date);
 606
 607         return 0;
 608
 609 error1:
 610         delete_unrhdr(dev->drw_unrhdr);
 611         drm_gem_destroy(dev);
 612 error:
 613         drm_ctxbitmap_cleanup(dev);
 614         drm_sysctl_cleanup(dev);
 615         DRM_LOCK(dev);
 616         drm_lastclose(dev);
 617         DRM_UNLOCK(dev);
 618         if (dev->devnode != NULL)
 619                 destroy_dev(dev->devnode);
 620
 621         mtx_destroy(&dev->drw_lock);
 622         mtx_destroy(&dev->vbl_lock);
 623         mtx_destroy(&dev->irq_lock);
 624         mtx_destroy(&dev->dev_lock);
 625         mtx_destroy(&dev->event_lock);
 626         sx_destroy(&dev->dev_struct_lock);
 627
 628         return retcode;
 629 }
 630
 631 static void drm_unload(struct drm_device *dev)
 632 {
 633         int i;
 634
 635         DRM_DEBUG("\n");
 636
 637         drm_sysctl_cleanup(dev);
 638         if (dev->devnode != NULL)
 639                 destroy_dev(dev->devnode);
 640
 641         drm_ctxbitmap_cleanup(dev);
 642
 643         if (dev->driver->driver_features & DRIVER_GEM)
 644                 drm_gem_destroy(dev);
 645
 646         if (dev->agp && dev->agp->mtrr) {
 647                 int __unused retcode;
 648
 649                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
 650                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
 651                 DRM_DEBUG("mtrr_del = %d", retcode);
 652         }
 653
 654         drm_vblank_cleanup(dev);
 655
 656         DRM_LOCK(dev);
 657         drm_lastclose(dev);
 658         DRM_UNLOCK(dev);
 659
 660         /* Clean up PCI resources allocated by drm_bufs.c.  We're not really
 661          * worried about resource consumption while the DRM is inactive (between
 662          * lastclose and firstopen or unload) because these aren't actually
 663          * taking up KVA, just keeping the PCI resource allocated.
 664          */
 665         for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
 666                 if (dev->pcir[i] == NULL)
 667                         continue;
 668                 bus_release_resource(dev->device, SYS_RES_MEMORY,
 669                     dev->pcirid[i], dev->pcir[i]);
 670                 dev->pcir[i] = NULL;
 671         }
 672
 673         if (dev->agp) {
 674                 free(dev->agp, DRM_MEM_AGPLISTS);
 675                 dev->agp = NULL;
 676         }
 677
 678         if (dev->driver->unload != NULL) {
 679                 DRM_LOCK(dev);
 680                 dev->driver->unload(dev);
 681                 DRM_UNLOCK(dev);
 682         }
 683
 684         delete_unrhdr(dev->drw_unrhdr);
 685         delete_unrhdr(dev->map_unrhdr);
 686
 687         drm_mem_uninit();
 688
 689         if (pci_disable_busmaster(dev->device))
 690                 DRM_ERROR("Request to disable bus-master failed.\n");
 691
 692         mtx_destroy(&dev->drw_lock);
 693         mtx_destroy(&dev->vbl_lock);
 694         mtx_destroy(&dev->irq_lock);
 695         mtx_destroy(&dev->dev_lock);
 696         mtx_destroy(&dev->event_lock);
 697         sx_destroy(&dev->dev_struct_lock);
 698 }
 699
 700 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 701 {
 702         struct drm_version *version = data;
 703         int len;
 704
 705 #define DRM_COPY( name, value )                                         \
 706         len = strlen( value );                                          \
 707         if ( len > name##_len ) len = name##_len;                       \
 708         name##_len = strlen( value );                                   \
 709         if ( len && name ) {                                            \
 710                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 711                         return EFAULT;                          \
 712         }
 713
 714         version->version_major          = dev->driver->major;
 715         version->version_minor          = dev->driver->minor;
 716         version->version_patchlevel     = dev->driver->patchlevel;
 717
 718         DRM_COPY(version->name, dev->driver->name);
 719         DRM_COPY(version->date, dev->driver->date);
 720         DRM_COPY(version->desc, dev->driver->desc);
 721
 722         return 0;
 723 }
 724
 725 int
 726 drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
 727 {
 728         struct drm_device *dev;
 729         int retcode;
 730
 731         dev = kdev->si_drv1;
 732         if (dev == NULL)
 733                 return (ENXIO);
 734
 735         DRM_DEBUG("open_count = %d\n", dev->open_count);
 736
 737         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
 738
 739         if (retcode == 0) {
 740                 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
 741                 DRM_LOCK(dev);
 742                 mtx_lock(&Giant);
 743                 device_busy(dev->device);
 744                 mtx_unlock(&Giant);
 745                 if (!dev->open_count++)
 746                         retcode = drm_firstopen(dev);
 747                 DRM_UNLOCK(dev);
 748         }
 749
 750         return (retcode);
 751 }
 752
 753 void drm_close(void *data)
 754 {
 755         struct drm_file *file_priv = data;
 756         struct drm_device *dev = file_priv->dev;
 757         int retcode = 0;
 758
 759         DRM_DEBUG("open_count = %d\n", dev->open_count);
 760
 761         DRM_LOCK(dev);
 762
 763         if (dev->driver->preclose != NULL)
 764                 dev->driver->preclose(dev, file_priv);
 765
 766         /* ========================================================
 767          * Begin inline drm_release
 768          */
 769
 770         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 771             DRM_CURRENTPID, (long)dev->device, dev->open_count);
 772
 773         if (dev->driver->driver_features & DRIVER_GEM)
 774                 drm_gem_release(dev, file_priv);
 775
 776         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 777             && dev->lock.file_priv == file_priv) {
 778                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 779                           DRM_CURRENTPID,
 780                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 781                 if (dev->driver->reclaim_buffers_locked != NULL)
 782                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 783
 784                 drm_lock_free(&dev->lock,
 785                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 786
 787                                 /* FIXME: may require heavy-handed reset of
 788                                    hardware at this point, possibly
 789                                    processed via a callback to the X
 790                                    server. */
 791         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 792             dev->lock.hw_lock != NULL) {
 793                 /* The lock is required to reclaim buffers */
 794                 for (;;) {
 795                         if (!dev->lock.hw_lock) {
 796                                 /* Device has been unregistered */
 797                                 retcode = EINTR;
 798                                 break;
 799                         }
 800                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 801                                 dev->lock.file_priv = file_priv;
 802                                 dev->lock.lock_time = jiffies;
 803                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 804                                 break;  /* Got lock */
 805                         }
 806                         /* Contention */
 807                         retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue,
 808                             PCATCH, "drmlk2", 0);
 809                         if (retcode)
 810                                 break;
 811                 }
 812                 if (retcode == 0) {
 813                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 814                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
 815                 }
 816         }
 817
 818         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
 819             !dev->driver->reclaim_buffers_locked)
 820                 drm_reclaim_buffers(dev, file_priv);
 821
 822         funsetown(&dev->buf_sigio);
 823         seldrain(&file_priv->event_poll);
 824
 825         if (dev->driver->postclose != NULL)
 826                 dev->driver->postclose(dev, file_priv);
 827         TAILQ_REMOVE(&dev->files, file_priv, link);
 828         free(file_priv, DRM_MEM_FILES);
 829
 830         /* ========================================================
 831          * End inline drm_release
 832          */
 833
 834         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
 835         mtx_lock(&Giant);
 836         device_unbusy(dev->device);
 837         mtx_unlock(&Giant);
 838         if (--dev->open_count == 0) {
 839                 retcode = drm_lastclose(dev);
 840         }
 841
 842         DRM_UNLOCK(dev);
 843 }
 844
 845 extern drm_ioctl_desc_t drm_compat_ioctls[];
 846
 847 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 848  */
 849 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
 850     DRM_STRUCTPROC *p)
 851 {
 852         struct drm_device *dev = drm_get_device_from_kdev(kdev);
 853         int retcode = 0;
 854         drm_ioctl_desc_t *ioctl;
 855         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 856         int nr = DRM_IOCTL_NR(cmd);
 857         int is_driver_ioctl = 0;
 858         struct drm_file *file_priv;
 859
 860         retcode = devfs_get_cdevpriv((void **)&file_priv);
 861         if (retcode != 0) {
 862                 DRM_ERROR("can't find authenticator\n");
 863                 return EINVAL;
 864         }
 865
 866         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 867         ++file_priv->ioctl_count;
 868
 869         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 870             DRM_CURRENTPID, cmd, nr, (long)dev->device,
 871             file_priv->authenticated);
 872
 873         switch (cmd) {
 874         case FIONBIO:
 875         case FIOASYNC:
 876                 return 0;
 877
 878         case FIOSETOWN:
 879                 return fsetown(*(int *)data, &dev->buf_sigio);
 880
 881         case FIOGETOWN:
 882                 *(int *) data = fgetown(&dev->buf_sigio);
 883                 return 0;
 884         }
 885
 886         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 887                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 888                 return EINVAL;
 889         }
 890
 891 #ifdef COMPAT_FREEBSD32
 892         /*
 893          * Called whenever a 32-bit process running under a 64-bit
 894          * kernel performs an ioctl on /dev/drm.
 895          */
 896         if (SV_CURPROC_FLAG(SV_ILP32) && drm_compat_ioctls[nr].func != NULL)
 897                 /*
 898                  * Assume that ioctls without an explicit compat
 899                  * routine will just work.  This may not always be a
 900                  * good assumption, but it's better than always
 901                  * failing.
 902                  */
 903                 ioctl = &drm_compat_ioctls[nr];
 904         else
 905 #endif
 906                 ioctl = &drm_ioctls[nr];
 907         /* It's not a core DRM ioctl, try driver-specific. */
 908         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 909                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 910                 nr -= DRM_COMMAND_BASE;
 911                 if (nr >= dev->driver->max_ioctl) {
 912                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
 913                             nr, dev->driver->max_ioctl);
 914                         return EINVAL;
 915                 }
 916 #ifdef COMPAT_FREEBSD32
 917                 if (SV_CURPROC_FLAG(SV_ILP32) &&
 918                     nr < *dev->driver->compat_ioctls_nr &&
 919                     dev->driver->compat_ioctls[nr].func != NULL)
 920                         ioctl = &dev->driver->compat_ioctls[nr];
 921                 else
 922 #endif
 923                         ioctl = &dev->driver->ioctls[nr];
 924                 is_driver_ioctl = 1;
 925         }
 926         func = ioctl->func;
 927
 928         if (func == NULL) {
 929                 DRM_DEBUG("no function\n");
 930                 return EINVAL;
 931         }
 932
 933         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 934             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 935             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 936                 return EACCES;
 937
 938         if (is_driver_ioctl) {
 939                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 940                         DRM_LOCK(dev);
 941                 /* shared code returns -errno */
 942                 retcode = -func(dev, data, file_priv);
 943                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 944                         DRM_UNLOCK(dev);
 945         } else {
 946                 retcode = func(dev, data, file_priv);
 947         }
 948
 949         if (retcode != 0)
 950                 DRM_DEBUG("    returning %d\n", retcode);
 951         if (retcode != 0 &&
 952             (drm_debug_flag & DRM_DEBUGBITS_FAILED_IOCTL) != 0) {
 953                 printf(
 954 "pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n",
 955                     DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->device,
 956                     file_priv->authenticated, retcode);
 957         }
 958
 959         return retcode;
 960 }
 961
 962 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 963 {
 964         drm_local_map_t *map;
 965
 966         DRM_LOCK_ASSERT(dev);
 967         TAILQ_FOREACH(map, &dev->maplist, link) {
 968                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
 969                         return map;
 970         }
 971
 972         return NULL;
 973 }
 974
 975 int
 976 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx,
 977     struct sysctl_oid *top)
 978 {
 979         struct sysctl_oid *oid;
 980
 981         snprintf(dev->busid_str, sizeof(dev->busid_str),
 982              "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus,
 983              dev->pci_slot, dev->pci_func);
 984         oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid",
 985             CTLFLAG_RD, dev->busid_str, 0, NULL);
 986         if (oid == NULL)
 987                 return (ENOMEM);
 988         dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0;
 989         oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO,
 990             "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL);
 991         if (oid == NULL)
 992                 return (ENOMEM);
 993
 994         return (0);
 995 }
 996
 997 static int
 998 drm_mmap_single(struct cdev *kdev, vm_ooffset_t *offset, vm_size_t size,
 999     struct vm_object **obj_res, int nprot)
1000 {
1001         struct drm_device *dev;
1002
1003         dev = drm_get_device_from_kdev(kdev);
1004         if (dev->drm_ttm_bdev != NULL) {
1005                 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size,
1006                     obj_res, nprot));
1007         } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) {
1008                 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot));
1009         } else {
1010                 return (ENODEV);
1011         }
1012 }
1013
1014 #if DRM_LINUX
1015
1016 #include <sys/sysproto.h>
1017
1018 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
1019
1020 #define LINUX_IOCTL_DRM_MIN             0x6400
1021 #define LINUX_IOCTL_DRM_MAX             0x64ff
1022
1023 static linux_ioctl_function_t drm_linux_ioctl;
1024 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
1025     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
1026
1027 /* The bits for in/out are switched on Linux */
1028 #define LINUX_IOC_IN    IOC_OUT
1029 #define LINUX_IOC_OUT   IOC_IN
1030
1031 static int
1032 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
1033 {
1034         int error;
1035         int cmd = args->cmd;
1036
1037         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
1038         if (cmd & LINUX_IOC_IN)
1039                 args->cmd |= IOC_IN;
1040         if (cmd & LINUX_IOC_OUT)
1041                 args->cmd |= IOC_OUT;
1042
1043         error = ioctl(p, (struct ioctl_args *)args);
1044
1045         return error;
1046 }
1047 #endif /* DRM_LINUX */
1048
1049
1050 static int
1051 drm_core_init(void *arg)
1052 {
1053
1054         drm_global_init();
1055
1056 #if DRM_LINUX
1057         linux_ioctl_register_handler(&drm_handler);
1058 #endif /* DRM_LINUX */
1059
1060         DRM_INFO("Initialized %s %d.%d.%d %s\n",
1061                  CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
1062         return 0;
1063 }
1064
1065 static void
1066 drm_core_exit(void *arg)
1067 {
1068
1069 #if DRM_LINUX
1070         linux_ioctl_unregister_handler(&drm_handler);
1071 #endif /* DRM_LINUX */
1072
1073         drm_global_release();
1074 }
1075
1076 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
1077     drm_core_init, NULL);
1078 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
1079     drm_core_exit, NULL);
1080
1081 static bool
1082 dmi_found(const struct dmi_system_id *dsi)
1083 {
1084         char *hw_vendor, *hw_prod;
1085         int i, slot;
1086         bool res;
1087
1088         hw_vendor = kern_getenv("smbios.planar.maker");
1089         hw_prod = kern_getenv("smbios.planar.product");
1090         res = true;
1091         for (i = 0; i < nitems(dsi->matches); i++) {
1092                 slot = dsi->matches[i].slot;
1093                 switch (slot) {
1094                 case DMI_NONE:
1095                         break;
1096                 case DMI_SYS_VENDOR:
1097                 case DMI_BOARD_VENDOR:
1098                         if (hw_vendor != NULL &&
1099                             !strcmp(hw_vendor, dsi->matches[i].substr)) {
1100                                 break;
1101                         } else {
1102                                 res = false;
1103                                 goto out;
1104                         }
1105                 case DMI_PRODUCT_NAME:
1106                 case DMI_BOARD_NAME:
1107                         if (hw_prod != NULL &&
1108                             !strcmp(hw_prod, dsi->matches[i].substr)) {
1109                                 break;
1110                         } else {
1111                                 res = false;
1112                                 goto out;
1113                         }
1114                 default:
1115                         res = false;
1116                         goto out;
1117                 }
1118         }
1119 out:
1120         freeenv(hw_vendor);
1121         freeenv(hw_prod);
1122
1123         return (res);
1124 }
1125
1126 bool
1127 dmi_check_system(const struct dmi_system_id *sysid)
1128 {
1129         const struct dmi_system_id *dsi;
1130         bool res;
1131
1132         for (res = false, dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) {
1133                 if (dmi_found(dsi)) {
1134                         res = true;
1135                         if (dsi->callback != NULL && dsi->callback(dsi))
1136                                 break;
1137                 }
1138         }
1139         return (res);
1140 }