drm_drv.c revision 254820
1126385Smlaier/*- 2126385Smlaier * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. 3126385Smlaier * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 4126385Smlaier * All Rights Reserved. 5126385Smlaier * 6130617Smlaier * Permission is hereby granted, free of charge, to any person obtaining a 7126385Smlaier * copy of this software and associated documentation files (the "Software"), 8126385Smlaier * to deal in the Software without restriction, including without limitation 9214834Srpaulo * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10214533Srpaulo * and/or sell copies of the Software, and to permit persons to whom the 11223637Sbz * Software is furnished to do so, subject to the following conditions: 12136902Sru * 13126385Smlaier * The above copyright notice and this permission notice (including the next 14191415Sed * paragraph) shall be included in all copies or substantial portions of the 15191415Sed * Software. 16126385Smlaier * 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: head/sys/dev/drm2/drm_drv.c 254820 2013-08-25 00:13:53Z dumbbell $"); 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 49int drm_debug_flag = (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | 50 DRM_DEBUGBITS_FAILED_IOCTL); 51#else 52int drm_debug_flag = 0; 53#endif 54int drm_notyet_flag = 0; 55 56unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ 57unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ 58 59static int drm_load(struct drm_device *dev); 60static void drm_unload(struct drm_device *dev); 61static drm_pci_id_list_t *drm_find_description(int vendor, int device, 62 drm_pci_id_list_t *idlist); 63static int drm_mmap_single(struct cdev *kdev, vm_ooffset_t *offset, 64 vm_size_t size, struct vm_object **obj_res, int nprot); 65 66static int 67drm_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 79static moduledata_t drm_mod = { 80 "drmn", 81 drm_modevent, 82 0 83}; 84DECLARE_MODULE(drmn, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 85MODULE_VERSION(drmn, 1); 86MODULE_DEPEND(drmn, agp, 1, 1, 1); 87MODULE_DEPEND(drmn, pci, 1, 1, 1); 88MODULE_DEPEND(drmn, mem, 1, 1, 1); 89MODULE_DEPEND(drmn, iicbus, 1, 1, 1); 90 91static 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 187static 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 199static int drm_msi = 1; /* Enable by default. */ 200TUNABLE_INT("hw.drm.msi", &drm_msi); 201SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); 202SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1, 203 "Enable MSI interrupts for drm devices"); 204 205static 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 212static 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 235int 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 259int 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 == 0) 317 error = drm_create_cdevs(kdev); 318 return (error); 319} 320 321int 322drm_create_cdevs(device_t kdev) 323{ 324 struct drm_device *dev; 325 int error, unit; 326 327 unit = device_get_unit(kdev); 328 dev = device_get_softc(kdev); 329 330 error = make_dev_p(MAKEDEV_WAITOK | MAKEDEV_CHECKNAME, &dev->devnode, 331 &drm_cdevsw, 0, DRM_DEV_UID, DRM_DEV_GID, 332 DRM_DEV_MODE, "dri/card%d", unit); 333 if (error == 0) 334 dev->devnode->si_drv1 = dev; 335 return (error); 336} 337 338int drm_detach(device_t kdev) 339{ 340 struct drm_device *dev; 341 342 dev = device_get_softc(kdev); 343 drm_unload(dev); 344 if (dev->irqr) { 345 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, 346 dev->irqr); 347 if (dev->msi_enabled) { 348 pci_release_msi(dev->device); 349 DRM_INFO("MSI released\n"); 350 } 351 } 352 return (0); 353} 354 355#ifndef DRM_DEV_NAME 356#define DRM_DEV_NAME "drm" 357#endif 358 359devclass_t drm_devclass; 360 361drm_pci_id_list_t *drm_find_description(int vendor, int device, 362 drm_pci_id_list_t *idlist) 363{ 364 int i = 0; 365 366 for (i = 0; idlist[i].vendor != 0; i++) { 367 if ((idlist[i].vendor == vendor) && 368 ((idlist[i].device == device) || 369 (idlist[i].device == 0))) { 370 return &idlist[i]; 371 } 372 } 373 return NULL; 374} 375 376static int drm_firstopen(struct drm_device *dev) 377{ 378 drm_local_map_t *map; 379 int i; 380 381 DRM_LOCK_ASSERT(dev); 382 383 /* prebuild the SAREA */ 384 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, 385 _DRM_CONTAINS_LOCK, &map); 386 if (i != 0) 387 return i; 388 389 if (dev->driver->firstopen) 390 dev->driver->firstopen(dev); 391 392 dev->buf_use = 0; 393 394 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { 395 i = drm_dma_setup(dev); 396 if (i != 0) 397 return i; 398 } 399 400 for (i = 0; i < DRM_HASH_SIZE; i++) { 401 dev->magiclist[i].head = NULL; 402 dev->magiclist[i].tail = NULL; 403 } 404 405 dev->lock.lock_queue = 0; 406 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 407 dev->irq_enabled = 0; 408 dev->context_flag = 0; 409 dev->last_context = 0; 410 dev->if_version = 0; 411 412 dev->buf_sigio = NULL; 413 414 DRM_DEBUG("\n"); 415 416 return 0; 417} 418 419static int drm_lastclose(struct drm_device *dev) 420{ 421 drm_magic_entry_t *pt, *next; 422 drm_local_map_t *map, *mapsave; 423 int i; 424 425 DRM_LOCK_ASSERT(dev); 426 427 DRM_DEBUG("\n"); 428 429 if (dev->driver->lastclose != NULL) 430 dev->driver->lastclose(dev); 431 432 if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled) 433 drm_irq_uninstall(dev); 434 435 if (dev->unique) { 436 free(dev->unique, DRM_MEM_DRIVER); 437 dev->unique = NULL; 438 dev->unique_len = 0; 439 } 440 /* Clear pid list */ 441 for (i = 0; i < DRM_HASH_SIZE; i++) { 442 for (pt = dev->magiclist[i].head; pt; pt = next) { 443 next = pt->next; 444 free(pt, DRM_MEM_MAGIC); 445 } 446 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 447 } 448 449 DRM_UNLOCK(dev); 450 drm_drawable_free_all(dev); 451 DRM_LOCK(dev); 452 453 /* Clear AGP information */ 454 if (dev->agp) { 455 drm_agp_mem_t *entry; 456 drm_agp_mem_t *nexte; 457 458 /* Remove AGP resources, but leave dev->agp intact until 459 * drm_unload is called. 460 */ 461 for (entry = dev->agp->memory; entry; entry = nexte) { 462 nexte = entry->next; 463 if (entry->bound) 464 drm_agp_unbind_memory(entry->handle); 465 drm_agp_free_memory(entry->handle); 466 free(entry, DRM_MEM_AGPLISTS); 467 } 468 dev->agp->memory = NULL; 469 470 if (dev->agp->acquired) 471 drm_agp_release(dev); 472 473 dev->agp->acquired = 0; 474 dev->agp->enabled = 0; 475 } 476 if (dev->sg != NULL) { 477 drm_sg_cleanup(dev->sg); 478 dev->sg = NULL; 479 } 480 481 TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) { 482 if (!(map->flags & _DRM_DRIVER)) 483 drm_rmmap(dev, map); 484 } 485 486 drm_dma_takedown(dev); 487 if (dev->lock.hw_lock) { 488 dev->lock.hw_lock = NULL; /* SHM removed */ 489 dev->lock.file_priv = NULL; 490 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 491 } 492 493 return 0; 494} 495 496static int drm_load(struct drm_device *dev) 497{ 498 int i, retcode; 499 500 DRM_DEBUG("\n"); 501 502 TAILQ_INIT(&dev->maplist); 503 dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL); 504 if (dev->map_unrhdr == NULL) { 505 DRM_ERROR("Couldn't allocate map number allocator\n"); 506 return EINVAL; 507 } 508 509 510 drm_mem_init(); 511 drm_sysctl_init(dev); 512 TAILQ_INIT(&dev->files); 513 514 dev->counters = 6; 515 dev->types[0] = _DRM_STAT_LOCK; 516 dev->types[1] = _DRM_STAT_OPENS; 517 dev->types[2] = _DRM_STAT_CLOSES; 518 dev->types[3] = _DRM_STAT_IOCTLS; 519 dev->types[4] = _DRM_STAT_LOCKS; 520 dev->types[5] = _DRM_STAT_UNLOCKS; 521 522 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 523 atomic_set(&dev->counts[i], 0); 524 525 INIT_LIST_HEAD(&dev->vblank_event_list); 526 527 if (drm_core_has_AGP(dev)) { 528 if (drm_device_is_agp(dev)) 529 dev->agp = drm_agp_init(); 530 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 531 dev->agp == NULL) { 532 DRM_ERROR("Card isn't AGP, or couldn't initialize " 533 "AGP.\n"); 534 retcode = ENOMEM; 535 goto error; 536 } 537 if (dev->agp != NULL && dev->agp->info.ai_aperture_base != 0) { 538 if (drm_mtrr_add(dev->agp->info.ai_aperture_base, 539 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0) 540 dev->agp->mtrr = 1; 541 } 542 } 543 544 retcode = drm_ctxbitmap_init(dev); 545 if (retcode != 0) { 546 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 547 goto error; 548 } 549 550 dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL); 551 if (dev->drw_unrhdr == NULL) { 552 DRM_ERROR("Couldn't allocate drawable number allocator\n"); 553 retcode = ENOMEM; 554 goto error; 555 } 556 557 if (dev->driver->driver_features & DRIVER_GEM) { 558 retcode = drm_gem_init(dev); 559 if (retcode != 0) { 560 DRM_ERROR("Cannot initialize graphics execution " 561 "manager (GEM)\n"); 562 goto error1; 563 } 564 } 565 566 if (dev->driver->load != NULL) { 567 DRM_LOCK(dev); 568 /* Shared code returns -errno. */ 569 retcode = -dev->driver->load(dev, 570 dev->id_entry->driver_private); 571 if (pci_enable_busmaster(dev->device)) 572 DRM_ERROR("Request to enable bus-master failed.\n"); 573 DRM_UNLOCK(dev); 574 if (retcode != 0) 575 goto error; 576 } 577 578 DRM_INFO("Initialized %s %d.%d.%d %s\n", 579 dev->driver->name, 580 dev->driver->major, 581 dev->driver->minor, 582 dev->driver->patchlevel, 583 dev->driver->date); 584 585 return 0; 586 587error1: 588 delete_unrhdr(dev->drw_unrhdr); 589error: 590 drm_sysctl_cleanup(dev); 591 DRM_LOCK(dev); 592 drm_lastclose(dev); 593 DRM_UNLOCK(dev); 594 if (dev->devnode != NULL) 595 destroy_dev(dev->devnode); 596 597 mtx_destroy(&dev->drw_lock); 598 mtx_destroy(&dev->vbl_lock); 599 mtx_destroy(&dev->irq_lock); 600 mtx_destroy(&dev->dev_lock); 601 mtx_destroy(&dev->event_lock); 602 sx_destroy(&dev->dev_struct_lock); 603 604 return retcode; 605} 606 607static void drm_unload(struct drm_device *dev) 608{ 609 int i; 610 611 DRM_DEBUG("\n"); 612 613 drm_sysctl_cleanup(dev); 614 if (dev->devnode != NULL) 615 destroy_dev(dev->devnode); 616 617 drm_ctxbitmap_cleanup(dev); 618 619 if (dev->driver->driver_features & DRIVER_GEM) 620 drm_gem_destroy(dev); 621 622 if (dev->agp && dev->agp->mtrr) { 623 int __unused retcode; 624 625 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, 626 dev->agp->info.ai_aperture_size, DRM_MTRR_WC); 627 DRM_DEBUG("mtrr_del = %d", retcode); 628 } 629 630 drm_vblank_cleanup(dev); 631 632 DRM_LOCK(dev); 633 drm_lastclose(dev); 634 DRM_UNLOCK(dev); 635 636 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 637 * worried about resource consumption while the DRM is inactive (between 638 * lastclose and firstopen or unload) because these aren't actually 639 * taking up KVA, just keeping the PCI resource allocated. 640 */ 641 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 642 if (dev->pcir[i] == NULL) 643 continue; 644 bus_release_resource(dev->device, SYS_RES_MEMORY, 645 dev->pcirid[i], dev->pcir[i]); 646 dev->pcir[i] = NULL; 647 } 648 649 if (dev->agp) { 650 free(dev->agp, DRM_MEM_AGPLISTS); 651 dev->agp = NULL; 652 } 653 654 if (dev->driver->unload != NULL) { 655 DRM_LOCK(dev); 656 dev->driver->unload(dev); 657 DRM_UNLOCK(dev); 658 } 659 660 delete_unrhdr(dev->drw_unrhdr); 661 delete_unrhdr(dev->map_unrhdr); 662 663 drm_mem_uninit(); 664 665 if (pci_disable_busmaster(dev->device)) 666 DRM_ERROR("Request to disable bus-master failed.\n"); 667 668 mtx_destroy(&dev->drw_lock); 669 mtx_destroy(&dev->vbl_lock); 670 mtx_destroy(&dev->irq_lock); 671 mtx_destroy(&dev->dev_lock); 672 mtx_destroy(&dev->event_lock); 673 sx_destroy(&dev->dev_struct_lock); 674} 675 676int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 677{ 678 struct drm_version *version = data; 679 int len; 680 681#define DRM_COPY( name, value ) \ 682 len = strlen( value ); \ 683 if ( len > name##_len ) len = name##_len; \ 684 name##_len = strlen( value ); \ 685 if ( len && name ) { \ 686 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 687 return EFAULT; \ 688 } 689 690 version->version_major = dev->driver->major; 691 version->version_minor = dev->driver->minor; 692 version->version_patchlevel = dev->driver->patchlevel; 693 694 DRM_COPY(version->name, dev->driver->name); 695 DRM_COPY(version->date, dev->driver->date); 696 DRM_COPY(version->desc, dev->driver->desc); 697 698 return 0; 699} 700 701int 702drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p) 703{ 704 struct drm_device *dev; 705 int retcode; 706 707 dev = kdev->si_drv1; 708 if (dev == NULL) 709 return (ENXIO); 710 711 DRM_DEBUG("open_count = %d\n", dev->open_count); 712 713 retcode = drm_open_helper(kdev, flags, fmt, p, dev); 714 715 if (retcode == 0) { 716 atomic_inc(&dev->counts[_DRM_STAT_OPENS]); 717 DRM_LOCK(dev); 718 mtx_lock(&Giant); 719 device_busy(dev->device); 720 mtx_unlock(&Giant); 721 if (!dev->open_count++) 722 retcode = drm_firstopen(dev); 723 DRM_UNLOCK(dev); 724 } 725 726 return (retcode); 727} 728 729void drm_close(void *data) 730{ 731 struct drm_file *file_priv = data; 732 struct drm_device *dev = file_priv->dev; 733 int retcode = 0; 734 735 DRM_DEBUG("open_count = %d\n", dev->open_count); 736 737 DRM_LOCK(dev); 738 739 if (dev->driver->preclose != NULL) 740 dev->driver->preclose(dev, file_priv); 741 742 /* ======================================================== 743 * Begin inline drm_release 744 */ 745 746 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 747 DRM_CURRENTPID, (long)dev->device, dev->open_count); 748 749 if (dev->driver->driver_features & DRIVER_GEM) 750 drm_gem_release(dev, file_priv); 751 752 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 753 && dev->lock.file_priv == file_priv) { 754 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 755 DRM_CURRENTPID, 756 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 757 if (dev->driver->reclaim_buffers_locked != NULL) 758 dev->driver->reclaim_buffers_locked(dev, file_priv); 759 760 drm_lock_free(&dev->lock, 761 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 762 763 /* FIXME: may require heavy-handed reset of 764 hardware at this point, possibly 765 processed via a callback to the X 766 server. */ 767 } else if (dev->driver->reclaim_buffers_locked != NULL && 768 dev->lock.hw_lock != NULL) { 769 /* The lock is required to reclaim buffers */ 770 for (;;) { 771 if (!dev->lock.hw_lock) { 772 /* Device has been unregistered */ 773 retcode = EINTR; 774 break; 775 } 776 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 777 dev->lock.file_priv = file_priv; 778 dev->lock.lock_time = jiffies; 779 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 780 break; /* Got lock */ 781 } 782 /* Contention */ 783 retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue, 784 PCATCH, "drmlk2", 0); 785 if (retcode) 786 break; 787 } 788 if (retcode == 0) { 789 dev->driver->reclaim_buffers_locked(dev, file_priv); 790 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 791 } 792 } 793 794 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 795 !dev->driver->reclaim_buffers_locked) 796 drm_reclaim_buffers(dev, file_priv); 797 798 funsetown(&dev->buf_sigio); 799 seldrain(&file_priv->event_poll); 800 801 if (dev->driver->postclose != NULL) 802 dev->driver->postclose(dev, file_priv); 803 TAILQ_REMOVE(&dev->files, file_priv, link); 804 free(file_priv, DRM_MEM_FILES); 805 806 /* ======================================================== 807 * End inline drm_release 808 */ 809 810 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 811 mtx_lock(&Giant); 812 device_unbusy(dev->device); 813 mtx_unlock(&Giant); 814 if (--dev->open_count == 0) { 815 retcode = drm_lastclose(dev); 816 } 817 818 DRM_UNLOCK(dev); 819} 820 821extern drm_ioctl_desc_t drm_compat_ioctls[]; 822 823/* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 824 */ 825int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags, 826 DRM_STRUCTPROC *p) 827{ 828 struct drm_device *dev = drm_get_device_from_kdev(kdev); 829 int retcode = 0; 830 drm_ioctl_desc_t *ioctl; 831 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 832 int nr = DRM_IOCTL_NR(cmd); 833 int is_driver_ioctl = 0; 834 struct drm_file *file_priv; 835 836 retcode = devfs_get_cdevpriv((void **)&file_priv); 837 if (retcode != 0) { 838 DRM_ERROR("can't find authenticator\n"); 839 return EINVAL; 840 } 841 842 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 843 ++file_priv->ioctl_count; 844 845 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 846 DRM_CURRENTPID, cmd, nr, (long)dev->device, 847 file_priv->authenticated); 848 849 switch (cmd) { 850 case FIONBIO: 851 case FIOASYNC: 852 return 0; 853 854 case FIOSETOWN: 855 return fsetown(*(int *)data, &dev->buf_sigio); 856 857 case FIOGETOWN: 858 *(int *) data = fgetown(&dev->buf_sigio); 859 return 0; 860 } 861 862 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 863 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 864 return EINVAL; 865 } 866 867#ifdef COMPAT_FREEBSD32 868 /* 869 * Called whenever a 32-bit process running under a 64-bit 870 * kernel performs an ioctl on /dev/drm. 871 */ 872 if (SV_CURPROC_FLAG(SV_ILP32) && drm_compat_ioctls[nr].func != NULL) 873 /* 874 * Assume that ioctls without an explicit compat 875 * routine will just work. This may not always be a 876 * good assumption, but it's better than always 877 * failing. 878 */ 879 ioctl = &drm_compat_ioctls[nr]; 880 else 881#endif 882 ioctl = &drm_ioctls[nr]; 883 /* It's not a core DRM ioctl, try driver-specific. */ 884 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 885 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 886 nr -= DRM_COMMAND_BASE; 887 if (nr > dev->driver->max_ioctl) { 888 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 889 nr, dev->driver->max_ioctl); 890 return EINVAL; 891 } 892#ifdef COMPAT_FREEBSD32 893 if (SV_CURPROC_FLAG(SV_ILP32) && 894 nr < *dev->driver->compat_ioctls_nr && 895 dev->driver->compat_ioctls[nr].func != NULL) 896 ioctl = &dev->driver->compat_ioctls[nr]; 897 else 898#endif 899 ioctl = &dev->driver->ioctls[nr]; 900 is_driver_ioctl = 1; 901 } 902 func = ioctl->func; 903 904 if (func == NULL) { 905 DRM_DEBUG("no function\n"); 906 return EINVAL; 907 } 908 909 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 910 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 911 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 912 return EACCES; 913 914 if (is_driver_ioctl) { 915 if ((ioctl->flags & DRM_UNLOCKED) == 0) 916 DRM_LOCK(dev); 917 /* shared code returns -errno */ 918 retcode = -func(dev, data, file_priv); 919 if ((ioctl->flags & DRM_UNLOCKED) == 0) 920 DRM_UNLOCK(dev); 921 } else { 922 retcode = func(dev, data, file_priv); 923 } 924 925 if (retcode != 0) 926 DRM_DEBUG(" returning %d\n", retcode); 927 if (retcode != 0 && 928 (drm_debug_flag & DRM_DEBUGBITS_FAILED_IOCTL) != 0) { 929 printf( 930"pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n", 931 DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->device, 932 file_priv->authenticated, retcode); 933 } 934 935 return retcode; 936} 937 938drm_local_map_t *drm_getsarea(struct drm_device *dev) 939{ 940 drm_local_map_t *map; 941 942 DRM_LOCK_ASSERT(dev); 943 TAILQ_FOREACH(map, &dev->maplist, link) { 944 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK)) 945 return map; 946 } 947 948 return NULL; 949} 950 951int 952drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx, 953 struct sysctl_oid *top) 954{ 955 struct sysctl_oid *oid; 956 957 snprintf(dev->busid_str, sizeof(dev->busid_str), 958 "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus, 959 dev->pci_slot, dev->pci_func); 960 oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid", 961 CTLFLAG_RD, dev->busid_str, 0, NULL); 962 if (oid == NULL) 963 return (ENOMEM); 964 dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0; 965 oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO, 966 "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL); 967 if (oid == NULL) 968 return (ENOMEM); 969 970 return (0); 971} 972 973static int 974drm_mmap_single(struct cdev *kdev, vm_ooffset_t *offset, vm_size_t size, 975 struct vm_object **obj_res, int nprot) 976{ 977 struct drm_device *dev; 978 979 dev = drm_get_device_from_kdev(kdev); 980 if ((dev->driver->driver_features & DRIVER_GEM) != 0) { 981 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot)); 982 } else if (dev->drm_ttm_bo != NULL) { 983 return (ttm_bo_mmap_single(dev->drm_ttm_bo, offset, size, 984 obj_res, nprot)); 985 } else { 986 return (ENODEV); 987 } 988} 989 990#if DRM_LINUX 991 992#include <sys/sysproto.h> 993 994MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 995 996#define LINUX_IOCTL_DRM_MIN 0x6400 997#define LINUX_IOCTL_DRM_MAX 0x64ff 998 999static linux_ioctl_function_t drm_linux_ioctl; 1000static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 1001 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 1002 1003/* The bits for in/out are switched on Linux */ 1004#define LINUX_IOC_IN IOC_OUT 1005#define LINUX_IOC_OUT IOC_IN 1006 1007static int 1008drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 1009{ 1010 int error; 1011 int cmd = args->cmd; 1012 1013 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 1014 if (cmd & LINUX_IOC_IN) 1015 args->cmd |= IOC_IN; 1016 if (cmd & LINUX_IOC_OUT) 1017 args->cmd |= IOC_OUT; 1018 1019 error = ioctl(p, (struct ioctl_args *)args); 1020 1021 return error; 1022} 1023#endif /* DRM_LINUX */ 1024 1025 1026static int 1027drm_core_init(void *arg) 1028{ 1029 1030 drm_global_init(); 1031 1032#if DRM_LINUX 1033 linux_ioctl_register_handler(&drm_handler); 1034#endif /* DRM_LINUX */ 1035 1036 DRM_INFO("Initialized %s %d.%d.%d %s\n", 1037 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); 1038 return 0; 1039} 1040 1041static void 1042drm_core_exit(void *arg) 1043{ 1044 1045#if DRM_LINUX 1046 linux_ioctl_unregister_handler(&drm_handler); 1047#endif /* DRM_LINUX */ 1048 1049 drm_global_release(); 1050} 1051 1052SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 1053 drm_core_init, NULL); 1054SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 1055 drm_core_exit, NULL); 1056 1057bool 1058dmi_check_system(const struct dmi_system_id *sysid) 1059{ 1060 1061 /* XXXKIB */ 1062 return (false); 1063} 1064