sys/dev/drm/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  * $FreeBSD: head/sys/dev/drm2/drm_drv.c 247835 2013-03-05 09:49:34Z kib $
  30  */
  31
  32 /** @file drm_drv.c
  33  * The catch-all file for DRM device support, including module setup/teardown,
  34  * open/close, and ioctl dispatch.
  35  */
  36
  37 #include <sys/devfs.h>
  38 #include <machine/limits.h>
  39
  40 #include <drm/drmP.h>
  41 #include <drm/drm_core.h>
  42
  43 #ifdef DRM_DEBUG_DEFAULT_ON
  44 int drm_debug = (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS |
  45     DRM_DEBUGBITS_FAILED_IOCTL);
  46 #else
  47 int drm_debug = 0;
  48 #endif
  49 int drm_notyet_flag = 0;
  50
  51 unsigned int drm_vblank_offdelay = 5000;    /* Default to 5000 msecs. */
  52 unsigned int drm_timestamp_precision = 20;  /* Default to 20 usecs. */
  53
  54 static int drm_load(struct drm_device *dev);
  55 drm_pci_id_list_t *drm_find_description(int vendor, int device,
  56     drm_pci_id_list_t *idlist);
  57
  58 #define DRIVER_SOFTC(unit) \
  59         ((struct drm_device *)devclass_get_softc(drm_devclass, unit))
  60
  61 static int
  62 drm_modevent(module_t mod, int type, void *data)
  63 {
  64
  65         switch (type) {
  66         case MOD_LOAD:
  67                 TUNABLE_INT_FETCH("drm.debug", &drm_debug);
  68                 TUNABLE_INT_FETCH("drm.notyet", &drm_notyet_flag);
  69                 break;
  70         }
  71         return (0);
  72 }
  73
  74 static moduledata_t drm_mod = {
  75         "drm",
  76         drm_modevent,
  77         0
  78 };
  79 DECLARE_MODULE(drm, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
  80 MODULE_VERSION(drm, 1);
  81 MODULE_DEPEND(drm, agp, 1, 1, 1);
  82 MODULE_DEPEND(drm, pci, 1, 1, 1);
  83 MODULE_DEPEND(drm, iicbus, 1, 1, 1);
  84
  85 static drm_ioctl_desc_t           drm_ioctls[256] = {
  86         DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
  87         DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
  88         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
  89         DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
  90         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
  91         DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
  92         DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
  93         DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED),
  94         DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
  95
  96         DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  97         DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  98         DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
  99         DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 100
 101         DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 102         DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
 103
 104         DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 105         DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
 106
 107         DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY),
 108         DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY),
 109
 110         DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
 111         DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 112         DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 113         DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
 114         DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 115         DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 116         DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
 117
 118         DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 119         DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 120
 121         DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
 122         DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
 123
 124         DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
 125
 126         DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 127         DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 128         DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
 129         DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
 130         DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
 131         DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
 132
 133         DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 134
 135         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 136         DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 137         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 138         DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
 139         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 140         DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 141         DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 142         DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 143
 144         DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 145         DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 146         DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED),
 147         DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
 148
 149         DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 150
 151         DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED),
 152         DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED),
 153         DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED),
 154
 155         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 156         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 157         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 158         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 159         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 160         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 161         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 162         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED),
 163         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED),
 164         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 165         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 166         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 167         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 168         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 169         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 170         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 171         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 172         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 173         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 174         DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 175         DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 176         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 177         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 178         DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 179         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 180 };
 181
 182 static struct dev_ops drm_cdevsw = {
 183         { "drm", 0, D_TRACKCLOSE | D_MPSAFE },
 184         .d_open =       drm_open,
 185         .d_close =      drm_close,
 186         .d_read =       drm_read,
 187         .d_ioctl =      drm_ioctl,
 188         .d_kqfilter =   drm_kqfilter,
 189         .d_mmap =       drm_mmap,
 190         .d_mmap_single = drm_mmap_single,
 191 };
 192
 193 static int drm_msi = 1; /* Enable by default. */
 194 TUNABLE_INT("hw.drm.msi", &drm_msi);
 195 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device");
 196 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RD, &drm_msi, 1,
 197     "Enable MSI interrupts for drm devices");
 198
 199 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
 200         {0x8086, 0x2772}, /* Intel i945G        */ \
 201         {0x8086, 0x27A2}, /* Intel i945GM       */ \
 202         {0x8086, 0x27AE}, /* Intel i945GME      */ \
 203         {0, 0}
 204 };
 205
 206 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags)
 207 {
 208         int i = 0;
 209
 210         if (dev->driver->use_msi != NULL) {
 211                 int use_msi;
 212
 213                 use_msi = dev->driver->use_msi(dev, flags);
 214
 215                 return (!use_msi);
 216         }
 217
 218         /* TODO: Maybe move this to a callback in i915? */
 219         for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
 220                 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) &&
 221                     (drm_msi_blacklist[i].device == dev->pci_device)) {
 222                         return 1;
 223                 }
 224         }
 225
 226         return 0;
 227 }
 228
 229 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
 230 {
 231         drm_pci_id_list_t *id_entry;
 232         int vendor, device;
 233
 234         vendor = pci_get_vendor(kdev);
 235         device = pci_get_device(kdev);
 236
 237         if (pci_get_class(kdev) != PCIC_DISPLAY)
 238                 return ENXIO;
 239
 240         id_entry = drm_find_description(vendor, device, idlist);
 241         if (id_entry != NULL) {
 242                 if (!device_get_desc(kdev)) {
 243                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
 244                         device_set_desc(kdev, id_entry->name);
 245                 }
 246                 return 0;
 247         }
 248
 249         return ENXIO;
 250 }
 251
 252 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
 253 {
 254         struct drm_device *dev;
 255         drm_pci_id_list_t *id_entry;
 256         int unit, error, msicount;
 257         int rid = 0;
 258
 259         unit = device_get_unit(kdev);
 260         dev = device_get_softc(kdev);
 261
 262         if (!strcmp(device_get_name(kdev), "drmsub"))
 263                 dev->dev = device_get_parent(kdev);
 264         else
 265                 dev->dev = kdev;
 266
 267         dev->pci_domain = pci_get_domain(dev->dev);
 268         dev->pci_bus = pci_get_bus(dev->dev);
 269         dev->pci_slot = pci_get_slot(dev->dev);
 270         dev->pci_func = pci_get_function(dev->dev);
 271
 272         dev->pci_vendor = pci_get_vendor(dev->dev);
 273         dev->pci_device = pci_get_device(dev->dev);
 274         dev->pci_subvendor = pci_get_subvendor(dev->dev);
 275         dev->pci_subdevice = pci_get_subdevice(dev->dev);
 276
 277         id_entry = drm_find_description(dev->pci_vendor,
 278             dev->pci_device, idlist);
 279         dev->id_entry = id_entry;
 280
 281         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
 282                 if (drm_msi &&
 283                     !drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) {
 284                         msicount = pci_msi_count(dev->dev);
 285                         DRM_DEBUG("MSI count = %d\n", msicount);
 286                         if (msicount > 1)
 287                                 msicount = 1;
 288
 289                         if (pci_alloc_msi(dev->dev, &rid, msicount, -1) == 0) {
 290                                 DRM_INFO("MSI enabled %d message(s)\n",
 291                                     msicount);
 292                                 dev->msi_enabled = 1;
 293                                 dev->irqrid = rid;
 294                         }
 295                 }
 296
 297                 dev->irqr = bus_alloc_resource_any(dev->dev, SYS_RES_IRQ,
 298                     &dev->irqrid, RF_SHAREABLE);
 299                 if (!dev->irqr) {
 300                         return (ENOENT);
 301                 }
 302
 303                 dev->irq = (int) rman_get_start(dev->irqr);
 304         }
 305
 306         lockinit(&dev->dev_lock, "drmdev", 0, LK_CANRECURSE);
 307         lwkt_serialize_init(&dev->irq_lock);
 308         lockinit(&dev->event_lock, "drmev", 0, LK_CANRECURSE);
 309         lockinit(&dev->struct_mutex, "drmslk", 0, LK_CANRECURSE);
 310
 311         error = drm_load(dev);
 312         if (error)
 313                 goto error;
 314
 315         error = drm_create_cdevs(kdev);
 316         if (error)
 317                 goto error;
 318
 319         return (error);
 320 error:
 321         if (dev->irqr) {
 322                 bus_release_resource(dev->dev, SYS_RES_IRQ,
 323                     dev->irqrid, dev->irqr);
 324         }
 325         if (dev->msi_enabled) {
 326                 pci_release_msi(dev->dev);
 327         }
 328         return (error);
 329 }
 330
 331 int
 332 drm_create_cdevs(device_t kdev)
 333 {
 334         struct drm_device *dev;
 335         int error, unit;
 336
 337         unit = device_get_unit(kdev);
 338         dev = device_get_softc(kdev);
 339
 340         dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID,
 341                                 DRM_DEV_MODE, "dri/card%d", unit);
 342         error = 0;
 343         if (error == 0)
 344                 dev->devnode->si_drv1 = dev;
 345         return (error);
 346 }
 347
 348 #ifndef DRM_DEV_NAME
 349 #define DRM_DEV_NAME "drm"
 350 #endif
 351
 352 devclass_t drm_devclass;
 353
 354 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 355     drm_pci_id_list_t *idlist)
 356 {
 357         int i = 0;
 358
 359         for (i = 0; idlist[i].vendor != 0; i++) {
 360                 if ((idlist[i].vendor == vendor) &&
 361                     ((idlist[i].device == device) ||
 362                     (idlist[i].device == 0))) {
 363                         return &idlist[i];
 364                 }
 365         }
 366         return NULL;
 367 }
 368
 369 /**
 370  * Take down the DRM device.
 371  *
 372  * \param dev DRM device structure.
 373  *
 374  * Frees every resource in \p dev.
 375  *
 376  * \sa drm_device
 377  */
 378 int drm_lastclose(struct drm_device * dev)
 379 {
 380         drm_magic_entry_t *pt, *next;
 381         int i;
 382
 383         DRM_DEBUG("\n");
 384
 385         if (dev->driver->lastclose != NULL)
 386                 dev->driver->lastclose(dev);
 387
 388         if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled)
 389                 drm_irq_uninstall(dev);
 390
 391         DRM_LOCK(dev);
 392         if (dev->unique) {
 393                 drm_free(dev->unique, M_DRM);
 394                 dev->unique = NULL;
 395                 dev->unique_len = 0;
 396         }
 397         /* Clear pid list */
 398         for (i = 0; i < DRM_HASH_SIZE; i++) {
 399                 for (pt = dev->magiclist[i].head; pt; pt = next) {
 400                         next = pt->next;
 401                         drm_free(pt, M_DRM);
 402                 }
 403                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
 404         }
 405
 406         /* Clear AGP information */
 407         if (dev->agp) {
 408                 drm_agp_mem_t *entry;
 409                 drm_agp_mem_t *nexte;
 410
 411                 /* Remove AGP resources, but leave dev->agp intact until
 412                  * drm_unload is called.
 413                  */
 414                 for (entry = dev->agp->memory; entry; entry = nexte) {
 415                         nexte = entry->next;
 416                         if (entry->bound)
 417                                 drm_agp_unbind_memory(entry->handle);
 418                         drm_agp_free_memory(entry->handle);
 419                         drm_free(entry, M_DRM);
 420                 }
 421                 dev->agp->memory = NULL;
 422
 423                 if (dev->agp->acquired)
 424                         drm_agp_release(dev);
 425
 426                 dev->agp->acquired = 0;
 427                 dev->agp->enabled  = 0;
 428         }
 429         if (dev->sg != NULL) {
 430                 drm_sg_cleanup(dev->sg);
 431                 dev->sg = NULL;
 432         }
 433
 434         drm_dma_takedown(dev);
 435         if (dev->lock.hw_lock) {
 436                 dev->lock.hw_lock = NULL; /* SHM removed */
 437                 dev->lock.file_priv = NULL;
 438                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 439         }
 440         DRM_UNLOCK(dev);
 441
 442         return 0;
 443 }
 444
 445 static int drm_load(struct drm_device *dev)
 446 {
 447         int i, retcode;
 448
 449         DRM_DEBUG("\n");
 450
 451         INIT_LIST_HEAD(&dev->maplist);
 452
 453         drm_mem_init();
 454         drm_sysctl_init(dev);
 455         INIT_LIST_HEAD(&dev->filelist);
 456
 457         dev->counters  = 6;
 458         dev->types[0]  = _DRM_STAT_LOCK;
 459         dev->types[1]  = _DRM_STAT_OPENS;
 460         dev->types[2]  = _DRM_STAT_CLOSES;
 461         dev->types[3]  = _DRM_STAT_IOCTLS;
 462         dev->types[4]  = _DRM_STAT_LOCKS;
 463         dev->types[5]  = _DRM_STAT_UNLOCKS;
 464
 465         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 466                 atomic_set(&dev->counts[i], 0);
 467
 468         INIT_LIST_HEAD(&dev->vblank_event_list);
 469
 470         if (drm_core_has_AGP(dev)) {
 471                 if (drm_device_is_agp(dev))
 472                         dev->agp = drm_agp_init();
 473                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 474                     dev->agp == NULL) {
 475                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 476                             "AGP.\n");
 477                         retcode = ENOMEM;
 478                         goto error;
 479                 }
 480                 if (dev->agp != NULL && dev->agp->agp_info.ai_aperture_base != 0) {
 481                         if (drm_mtrr_add(dev->agp->agp_info.ai_aperture_base,
 482                             dev->agp->agp_info.ai_aperture_size, DRM_MTRR_WC) == 0)
 483                                 dev->agp->agp_mtrr = 1;
 484                 }
 485         }
 486
 487         retcode = drm_ctxbitmap_init(dev);
 488         if (retcode != 0) {
 489                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 490                 goto error;
 491         }
 492
 493         if (dev->driver->driver_features & DRIVER_GEM) {
 494                 retcode = drm_gem_init(dev);
 495                 if (retcode != 0) {
 496                         DRM_ERROR("Cannot initialize graphics execution "
 497                                   "manager (GEM)\n");
 498                         goto error1;
 499                 }
 500         }
 501
 502         if (dev->driver->load != NULL) {
 503                 DRM_LOCK(dev);
 504                 /* Shared code returns -errno. */
 505                 retcode = -dev->driver->load(dev,
 506                     dev->id_entry->driver_private);
 507                 if (pci_enable_busmaster(dev->dev))
 508                         DRM_ERROR("Request to enable bus-master failed.\n");
 509                 DRM_UNLOCK(dev);
 510                 if (retcode != 0)
 511                         goto error1;
 512         }
 513
 514         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 515             dev->driver->name,
 516             dev->driver->major,
 517             dev->driver->minor,
 518             dev->driver->patchlevel,
 519             dev->driver->date);
 520
 521         return 0;
 522
 523 error1:
 524         drm_gem_destroy(dev);
 525 error:
 526         drm_ctxbitmap_cleanup(dev);
 527         drm_sysctl_cleanup(dev);
 528         DRM_LOCK(dev);
 529         drm_lastclose(dev);
 530         DRM_UNLOCK(dev);
 531         if (dev->devnode != NULL)
 532                 destroy_dev(dev->devnode);
 533
 534         lockuninit(&dev->vbl_lock);
 535         lockuninit(&dev->dev_lock);
 536         lockuninit(&dev->event_lock);
 537         lockuninit(&dev->struct_mutex);
 538
 539         return retcode;
 540 }
 541
 542 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 543 {
 544         struct drm_version *version = data;
 545         int len;
 546
 547 #define DRM_COPY( name, value )                                         \
 548         len = strlen( value );                                          \
 549         if ( len > name##_len ) len = name##_len;                       \
 550         name##_len = strlen( value );                                   \
 551         if ( len && name ) {                                            \
 552                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 553                         return EFAULT;                          \
 554         }
 555
 556         version->version_major          = dev->driver->major;
 557         version->version_minor          = dev->driver->minor;
 558         version->version_patchlevel     = dev->driver->patchlevel;
 559
 560         DRM_COPY(version->name, dev->driver->name);
 561         DRM_COPY(version->date, dev->driver->date);
 562         DRM_COPY(version->desc, dev->driver->desc);
 563
 564         return 0;
 565 }
 566
 567 /*
 568  * Stub is needed for devfs
 569  */
 570 int drm_close(struct dev_close_args *ap)
 571 {
 572         return 0;
 573 }
 574
 575 void drm_cdevpriv_dtor(void *cd)
 576 {
 577         struct drm_file *file_priv = cd;
 578         struct drm_device *dev = file_priv->dev;
 579         int retcode = 0;
 580
 581         DRM_DEBUG("open_count = %d\n", dev->open_count);
 582
 583         DRM_LOCK(dev);
 584
 585         if (dev->driver->preclose != NULL)
 586                 dev->driver->preclose(dev, file_priv);
 587
 588         /* ========================================================
 589          * Begin inline drm_release
 590          */
 591
 592         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 593             DRM_CURRENTPID, (long)dev->dev, dev->open_count);
 594
 595         if (dev->driver->driver_features & DRIVER_GEM)
 596                 drm_gem_release(dev, file_priv);
 597
 598         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 599             && dev->lock.file_priv == file_priv) {
 600                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 601                           DRM_CURRENTPID,
 602                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 603                 if (dev->driver->reclaim_buffers_locked != NULL)
 604                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 605
 606                 drm_lock_free(&dev->lock,
 607                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 608
 609                                 /* FIXME: may require heavy-handed reset of
 610                                    hardware at this point, possibly
 611                                    processed via a callback to the X
 612                                    server. */
 613         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 614             dev->lock.hw_lock != NULL) {
 615                 /* The lock is required to reclaim buffers */
 616                 for (;;) {
 617                         if (!dev->lock.hw_lock) {
 618                                 /* Device has been unregistered */
 619                                 retcode = EINTR;
 620                                 break;
 621                         }
 622                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 623                                 dev->lock.file_priv = file_priv;
 624                                 dev->lock.lock_time = jiffies;
 625                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 626                                 break;  /* Got lock */
 627                         }
 628                         /* Contention */
 629                         retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue,
 630                             PCATCH, "drmlk2", 0);
 631                         if (retcode)
 632                                 break;
 633                 }
 634                 if (retcode == 0) {
 635                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 636                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
 637                 }
 638         }
 639
 640         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
 641             !dev->driver->reclaim_buffers_locked)
 642                 drm_reclaim_buffers(dev, file_priv);
 643
 644         funsetown(&dev->buf_sigio);
 645
 646         if (dev->driver->postclose != NULL)
 647                 dev->driver->postclose(dev, file_priv);
 648         list_del(&file_priv->lhead);
 649
 650
 651         /* ========================================================
 652          * End inline drm_release
 653          */
 654
 655         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
 656         device_unbusy(dev->dev);
 657         if (--dev->open_count == 0) {
 658                 retcode = drm_lastclose(dev);
 659         }
 660
 661         DRM_UNLOCK(dev);
 662 }
 663
 664 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 665  */
 666 int drm_ioctl(struct dev_ioctl_args *ap)
 667 {
 668         struct cdev *kdev = ap->a_head.a_dev;
 669         u_long cmd = ap->a_cmd;
 670         caddr_t data = ap->a_data;
 671         struct thread *p = curthread;
 672         struct drm_device *dev = drm_get_device_from_kdev(kdev);
 673         int retcode = 0;
 674         drm_ioctl_desc_t *ioctl;
 675         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 676         int nr = DRM_IOCTL_NR(cmd);
 677         int is_driver_ioctl = 0;
 678         struct drm_file *file_priv;
 679
 680         retcode = devfs_get_cdevpriv(ap->a_fp, (void **)&file_priv);
 681         if (retcode !=0) {
 682                 DRM_ERROR("can't find authenticator\n");
 683                 return EINVAL;
 684         }
 685
 686         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 687         ++file_priv->ioctl_count;
 688
 689         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 690             DRM_CURRENTPID, cmd, nr, (long)dev->dev,
 691             file_priv->authenticated);
 692
 693         switch (cmd) {
 694         case FIONBIO:
 695         case FIOASYNC:
 696                 return 0;
 697
 698         case FIOSETOWN:
 699                 return fsetown(*(int *)data, &dev->buf_sigio);
 700
 701         case FIOGETOWN:
 702                 *(int *) data = fgetown(&dev->buf_sigio);
 703                 return 0;
 704         }
 705
 706         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 707                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 708                 return EINVAL;
 709         }
 710
 711         ioctl = &drm_ioctls[nr];
 712         /* It's not a core DRM ioctl, try driver-specific. */
 713         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 714                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 715                 nr -= DRM_COMMAND_BASE;
 716                 if (nr > dev->driver->num_ioctls) {
 717                         return EINVAL;
 718                 }
 719                 ioctl = &dev->driver->ioctls[nr];
 720                 is_driver_ioctl = 1;
 721         }
 722         func = ioctl->func;
 723
 724         if (func == NULL) {
 725                 DRM_DEBUG("no function\n");
 726                 return EINVAL;
 727         }
 728
 729         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 730             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 731             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 732                 return EACCES;
 733
 734         if (is_driver_ioctl) {
 735                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 736                         DRM_LOCK(dev);
 737                 /* shared code returns -errno */
 738                 retcode = -func(dev, data, file_priv);
 739                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 740                         DRM_UNLOCK(dev);
 741         } else {
 742                 retcode = func(dev, data, file_priv);
 743         }
 744
 745         if (retcode != 0)
 746                 DRM_DEBUG("    returning %d\n", retcode);
 747         if (retcode != 0 &&
 748             (drm_debug & DRM_DEBUGBITS_FAILED_IOCTL) != 0) {
 749                 kprintf(
 750 "pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n",
 751                     DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->dev,
 752                     file_priv->authenticated, retcode);
 753         }
 754
 755         return retcode;
 756 }
 757
 758 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 759 {
 760         struct drm_map_list *entry;
 761
 762         list_for_each_entry(entry, &dev->maplist, head) {
 763                 if (entry->map && entry->map->type == _DRM_SHM &&
 764                     (entry->map->flags & _DRM_CONTAINS_LOCK)) {
 765                         return entry->map;
 766                 }
 767         }
 768
 769         return NULL;
 770 }
 771
 772 int
 773 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx,
 774     struct sysctl_oid *top)
 775 {
 776         struct sysctl_oid *oid;
 777
 778         ksnprintf(dev->busid_str, sizeof(dev->busid_str),
 779              "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus,
 780              dev->pci_slot, dev->pci_func);
 781         oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid",
 782             CTLFLAG_RD, dev->busid_str, 0, NULL);
 783         if (oid == NULL)
 784                 return (ENOMEM);
 785         dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0;
 786         oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO,
 787             "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL);
 788         if (oid == NULL)
 789                 return (ENOMEM);
 790
 791         return (0);
 792 }
 793
 794 int
 795 drm_mmap_single(struct dev_mmap_single_args *ap)
 796 {
 797         struct drm_device *dev;
 798         struct cdev *kdev = ap->a_head.a_dev;
 799         vm_ooffset_t *offset = ap->a_offset;
 800         vm_size_t size = ap->a_size;
 801         struct vm_object **obj_res = ap->a_object;
 802         int nprot = ap->a_nprot;
 803
 804         dev = drm_get_device_from_kdev(kdev);
 805         if (dev->drm_ttm_bdev != NULL) {
 806                 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size,
 807                     obj_res, nprot));
 808         } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) {
 809                 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot));
 810         } else {
 811                 return (ENODEV);
 812         }
 813 }
 814
 815 #if DRM_LINUX
 816
 817 #include <sys/sysproto.h>
 818
 819 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
 820
 821 #define LINUX_IOCTL_DRM_MIN             0x6400
 822 #define LINUX_IOCTL_DRM_MAX             0x64ff
 823
 824 static linux_ioctl_function_t drm_linux_ioctl;
 825 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
 826     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
 827
 828 /* The bits for in/out are switched on Linux */
 829 #define LINUX_IOC_IN    IOC_OUT
 830 #define LINUX_IOC_OUT   IOC_IN
 831
 832 static int
 833 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
 834 {
 835         int error;
 836         int cmd = args->cmd;
 837
 838         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
 839         if (cmd & LINUX_IOC_IN)
 840                 args->cmd |= IOC_IN;
 841         if (cmd & LINUX_IOC_OUT)
 842                 args->cmd |= IOC_OUT;
 843
 844         error = ioctl(p, (struct ioctl_args *)args);
 845
 846         return error;
 847 }
 848 #endif /* DRM_LINUX */
 849
 850 static int
 851 drm_core_init(void *arg)
 852 {
 853
 854         drm_global_init();
 855
 856 #if DRM_LINUX
 857         linux_ioctl_register_handler(&drm_handler);
 858 #endif /* DRM_LINUX */
 859
 860         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 861                  CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
 862         return 0;
 863 }
 864
 865 static void
 866 drm_core_exit(void *arg)
 867 {
 868
 869 #if DRM_LINUX
 870         linux_ioctl_unregister_handler(&drm_handler);
 871 #endif /* DRM_LINUX */
 872
 873         drm_global_release();
 874 }
 875
 876 SYSINIT(drm_register, SI_SUB_DRIVERS, SI_ORDER_MIDDLE,
 877     drm_core_init, NULL);
 878 SYSUNINIT(drm_unregister, SI_SUB_DRIVERS, SI_ORDER_MIDDLE,
 879     drm_core_exit, NULL);
 880
 881 /*
 882  * Check if dmi_system_id structure matches system DMI data
 883  */
 884 static bool
 885 dmi_found(const struct dmi_system_id *dsi)
 886 {
 887         int i, slot;
 888         bool found = false;
 889         char *sys_vendor, *board_vendor, *product_name, *board_name;
 890
 891         sys_vendor = kgetenv("smbios.system.maker");
 892         board_vendor = kgetenv("smbios.planar.maker");
 893         product_name = kgetenv("smbios.system.product");
 894         board_name = kgetenv("smbios.planar.product");
 895
 896         for (i = 0; i < NELEM(dsi->matches); i++) {
 897                 slot = dsi->matches[i].slot;
 898                 switch (slot) {
 899                 case DMI_NONE:
 900                         break;
 901                 case DMI_SYS_VENDOR:
 902                         if (sys_vendor != NULL &&
 903                             !strcmp(sys_vendor, dsi->matches[i].substr))
 904                                 break;
 905                         else
 906                                 goto done;
 907                 case DMI_BOARD_VENDOR:
 908                         if (board_vendor != NULL &&
 909                             !strcmp(board_vendor, dsi->matches[i].substr))
 910                                 break;
 911                         else
 912                                 goto done;
 913                 case DMI_PRODUCT_NAME:
 914                         if (product_name != NULL &&
 915                             !strcmp(product_name, dsi->matches[i].substr))
 916                                 break;
 917                         else
 918                                 goto done;
 919                 case DMI_BOARD_NAME:
 920                         if (board_name != NULL &&
 921                             !strcmp(board_name, dsi->matches[i].substr))
 922                                 break;
 923                         else
 924                                 goto done;
 925                 default:
 926                         goto done;
 927                 }
 928         }
 929         found = true;
 930
 931 done:
 932         if (sys_vendor != NULL)
 933                 kfreeenv(sys_vendor);
 934         if (board_vendor != NULL)
 935                 kfreeenv(board_vendor);
 936         if (product_name != NULL)
 937                 kfreeenv(product_name);
 938         if (board_name != NULL)
 939                 kfreeenv(board_name);
 940
 941         return found;
 942 }
 943
 944 bool
 945 dmi_check_system(const struct dmi_system_id *sysid)
 946 {
 947         const struct dmi_system_id *dsi;
 948         int num = 0;
 949
 950         for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) {
 951                 if (dmi_found(dsi)) {
 952                         num++;
 953                         if (dsi->callback && dsi->callback(dsi))
 954                                 break;
 955                 }
 956         }
 957         return (num);
 958 }
 959