1 /** 2 * \file drm_drv.c 3 * Generic driver template 4 * 5 * \author Rickard E. (Rik) Faith <faith@valinux.com> 6 * \author Gareth Hughes <gareth@valinux.com> 7 * 8 * To use this template, you must at least define the following (samples 9 * given for the MGA driver): 10 * 11 * \code 12 * #define DRIVER_AUTHOR "VA Linux Systems, Inc." 13 * 14 * #define DRIVER_NAME "mga" 15 * #define DRIVER_DESC "Matrox G200/G400" 16 * #define DRIVER_DATE "20001127" 17 * 18 * #define drm_x mga_##x 19 * \endcode 20 */ 21 22 /* 23 * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com 24 * 25 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. 26 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 27 * All Rights Reserved. 28 * 29 * Permission is hereby granted, free of charge, to any person obtaining a 30 * copy of this software and associated documentation files (the "Software"), 31 * to deal in the Software without restriction, including without limitation 32 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 33 * and/or sell copies of the Software, and to permit persons to whom the 34 * Software is furnished to do so, subject to the following conditions: 35 * 36 * The above copyright notice and this permission notice (including the next 37 * paragraph) shall be included in all copies or substantial portions of the 38 * Software. 39 * 40 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 41 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 42 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 43 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 44 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 45 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 46 * OTHER DEALINGS IN THE SOFTWARE. 47 */ 48 49 #include <sys/cdefs.h> 50 __FBSDID("$FreeBSD$"); 51 52 #include <sys/sysent.h> 53 54 #include <linux/slab.h> 55 #include <dev/drm2/drmP.h> 56 #include <dev/drm2/drm_core.h> 57 #include <dev/drm2/drm_global.h> 58 59 struct sx drm_global_mutex; 60 61 /** Ioctl table */ 62 static struct drm_ioctl_desc drm_ioctls[] = { 63 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, DRM_UNLOCKED), 64 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), 65 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), 66 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), 67 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, DRM_UNLOCKED), 68 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, DRM_UNLOCKED), 69 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, DRM_UNLOCKED), 70 DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED), 71 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER), 72 73 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 74 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 75 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 76 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER), 77 78 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 79 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), 80 81 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 82 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), 83 84 DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), 85 DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), 86 87 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), 88 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 89 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 90 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), 91 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 92 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 93 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), 94 95 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 96 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 97 98 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), 99 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), 100 101 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), 102 103 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 104 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 105 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), 106 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), 107 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), 108 /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */ 109 DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH), 110 111 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 112 113 #if __OS_HAS_AGP 114 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 115 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 116 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 117 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), 118 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 119 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 120 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 121 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 122 #endif 123 124 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 125 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 126 127 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED), 128 129 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), 130 131 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 132 133 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED), 134 DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), 135 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), 136 137 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 138 139 #ifdef FREEBSD_NOTYET 140 DRM_IOCTL_DEF(DRM_IOCTL_PRIME_HANDLE_TO_FD, drm_prime_handle_to_fd_ioctl, DRM_AUTH|DRM_UNLOCKED), 141 DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_UNLOCKED), 142 #endif /* FREEBSD_NOTYET */ 143 144 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 145 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 146 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 147 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 148 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 149 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 150 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_UNLOCKED), 151 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), 152 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 153 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 154 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 155 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 156 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 157 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 158 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 159 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 160 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 161 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 162 DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 163 DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 164 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 165 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 166 DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 167 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 168 DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 169 DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 170 }; 171 172 #ifdef COMPAT_FREEBSD32 173 extern struct drm_ioctl_desc drm_compat_ioctls[]; 174 #endif 175 176 #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) 177 178 /** 179 * Take down the DRM device. 180 * 181 * \param dev DRM device structure. 182 * 183 * Frees every resource in \p dev. 184 * 185 * \sa drm_device 186 */ 187 int drm_lastclose(struct drm_device * dev) 188 { 189 #ifdef __linux__ 190 struct drm_vma_entry *vma, *vma_temp; 191 #endif 192 193 DRM_DEBUG("\n"); 194 195 if (dev->driver->lastclose) 196 dev->driver->lastclose(dev); 197 DRM_DEBUG("driver lastclose completed\n"); 198 199 if (dev->irq_enabled && !drm_core_check_feature(dev, DRIVER_MODESET)) 200 drm_irq_uninstall(dev); 201 202 DRM_LOCK(dev); 203 204 /* Clear AGP information */ 205 if (drm_core_has_AGP(dev) && dev->agp && 206 !drm_core_check_feature(dev, DRIVER_MODESET)) { 207 struct drm_agp_mem *entry, *tempe; 208 209 /* Remove AGP resources, but leave dev->agp 210 intact until drv_cleanup is called. */ 211 list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { 212 if (entry->bound) 213 drm_unbind_agp(entry->memory); 214 drm_free_agp(entry->memory, entry->pages); 215 kfree(entry); 216 } 217 INIT_LIST_HEAD(&dev->agp->memory); 218 219 if (dev->agp->acquired) 220 drm_agp_release(dev); 221 222 dev->agp->acquired = 0; 223 dev->agp->enabled = 0; 224 } 225 if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg && 226 !drm_core_check_feature(dev, DRIVER_MODESET)) { 227 drm_sg_cleanup(dev->sg); 228 dev->sg = NULL; 229 } 230 231 #ifdef __linux__ 232 /* Clear vma list (only built for debugging) */ 233 list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) { 234 list_del(&vma->head); 235 kfree(vma); 236 } 237 #endif 238 239 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 240 !drm_core_check_feature(dev, DRIVER_MODESET)) 241 drm_dma_takedown(dev); 242 243 DRM_UNLOCK(dev); 244 245 DRM_DEBUG("lastclose completed\n"); 246 return 0; 247 } 248 249 #ifdef __linux__ 250 /** File operations structure */ 251 static const struct file_operations drm_stub_fops = { 252 .owner = THIS_MODULE, 253 .open = drm_stub_open, 254 .llseek = noop_llseek, 255 }; 256 #endif 257 258 static int __init drm_core_init(void) 259 { 260 261 sx_init(&drm_global_mutex, "drm_global_mutex"); 262 263 drm_global_init(); 264 265 #if DRM_LINUX 266 linux_ioctl_register_handler(&drm_handler); 267 #endif /* DRM_LINUX */ 268 269 DRM_INFO("Initialized %s %d.%d.%d %s\n", 270 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); 271 return 0; 272 } 273 274 static void __exit drm_core_exit(void) 275 { 276 277 #if DRM_LINUX 278 linux_ioctl_unregister_handler(&drm_handler); 279 #endif /* DRM_LINUX */ 280 281 drm_global_release(); 282 283 sx_destroy(&drm_global_mutex); 284 } 285 286 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 287 drm_core_init, NULL); 288 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 289 drm_core_exit, NULL); 290 291 /** 292 * Copy and IOCTL return string to user space 293 */ 294 static int drm_copy_field(char *buf, size_t *buf_len, const char *value) 295 { 296 int len; 297 298 /* don't overflow userbuf */ 299 len = strlen(value); 300 if (len > *buf_len) 301 len = *buf_len; 302 303 /* let userspace know exact length of driver value (which could be 304 * larger than the userspace-supplied buffer) */ 305 *buf_len = strlen(value); 306 307 /* finally, try filling in the userbuf */ 308 if (len && buf) 309 if (copy_to_user(buf, value, len)) 310 return -EFAULT; 311 return 0; 312 } 313 314 /** 315 * Get version information 316 * 317 * \param inode device inode. 318 * \param filp file pointer. 319 * \param cmd command. 320 * \param arg user argument, pointing to a drm_version structure. 321 * \return zero on success or negative number on failure. 322 * 323 * Fills in the version information in \p arg. 324 */ 325 int drm_version(struct drm_device *dev, void *data, 326 struct drm_file *file_priv) 327 { 328 struct drm_version *version = data; 329 int err; 330 331 version->version_major = dev->driver->major; 332 version->version_minor = dev->driver->minor; 333 version->version_patchlevel = dev->driver->patchlevel; 334 err = drm_copy_field(version->name, &version->name_len, 335 dev->driver->name); 336 if (!err) 337 err = drm_copy_field(version->date, &version->date_len, 338 dev->driver->date); 339 if (!err) 340 err = drm_copy_field(version->desc, &version->desc_len, 341 dev->driver->desc); 342 343 return err; 344 } 345 346 /** 347 * Called whenever a process performs an ioctl on /dev/drm. 348 * 349 * \param inode device inode. 350 * \param file_priv DRM file private. 351 * \param cmd command. 352 * \param arg user argument. 353 * \return zero on success or negative number on failure. 354 * 355 * Looks up the ioctl function in the ::ioctls table, checking for root 356 * previleges if so required, and dispatches to the respective function. 357 */ 358 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags, 359 DRM_STRUCTPROC *p) 360 { 361 struct drm_file *file_priv; 362 struct drm_device *dev; 363 struct drm_ioctl_desc *ioctl; 364 drm_ioctl_t *func; 365 unsigned int nr = DRM_IOCTL_NR(cmd); 366 int retcode; 367 368 dev = drm_get_device_from_kdev(kdev); 369 370 retcode = devfs_get_cdevpriv((void **)&file_priv); 371 if (retcode != 0) { 372 DRM_ERROR("can't find authenticator\n"); 373 return EINVAL; 374 } 375 376 retcode = -EINVAL; 377 378 atomic_inc(&dev->ioctl_count); 379 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 380 ++file_priv->ioctl_count; 381 382 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 383 DRM_CURRENTPID, cmd, nr, 384 (long)file_priv->minor->device, 385 file_priv->authenticated); 386 387 switch (cmd) { 388 case FIONBIO: 389 case FIOASYNC: 390 atomic_dec(&dev->ioctl_count); 391 return 0; 392 393 case FIOSETOWN: 394 atomic_dec(&dev->ioctl_count); 395 return fsetown(*(int *)data, &file_priv->minor->buf_sigio); 396 397 case FIOGETOWN: 398 atomic_dec(&dev->ioctl_count); 399 *(int *) data = fgetown(&file_priv->minor->buf_sigio); 400 return 0; 401 } 402 403 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 404 atomic_dec(&dev->ioctl_count); 405 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 406 return EINVAL; 407 } 408 409 if ((nr >= DRM_CORE_IOCTL_COUNT) && 410 ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) 411 goto err_i1; 412 #ifdef COMPAT_FREEBSD32 413 if (SV_CURPROC_FLAG(SV_ILP32) && 414 (nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) && 415 (nr < DRM_COMMAND_BASE + *dev->driver->num_compat_ioctls) && 416 (dev->driver->compat_ioctls[nr - DRM_COMMAND_BASE].func != NULL)) { 417 ioctl = &dev->driver->compat_ioctls[nr - DRM_COMMAND_BASE]; 418 } else 419 #endif 420 if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) && 421 (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) { 422 ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; 423 } 424 else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) { 425 #ifdef COMPAT_FREEBSD32 426 /* 427 * Called whenever a 32-bit process running under a 64-bit 428 * kernel performs an ioctl on /dev/drm. 429 */ 430 if (SV_CURPROC_FLAG(SV_ILP32) && drm_compat_ioctls[nr].func != NULL) 431 /* 432 * Assume that ioctls without an explicit compat 433 * routine will just work. This may not always be a 434 * good assumption, but it's better than always 435 * failing. 436 */ 437 ioctl = &drm_compat_ioctls[nr]; 438 else 439 #endif 440 ioctl = &drm_ioctls[nr]; 441 } else 442 goto err_i1; 443 444 /* Do not trust userspace, use our own definition */ 445 func = ioctl->func; 446 /* is there a local override? */ 447 #ifdef FREEBSD_NOTYET 448 #ifdef COMPAT_FREEBSD32 449 if (SV_CURPROC_FLAG(SV_ILP32) && 450 (nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_compat_ioctl) 451 func = dev->driver->dma_compat_ioctl; 452 else 453 #endif 454 #endif /* FREEBSD_NOTYET */ 455 if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) 456 func = dev->driver->dma_ioctl; 457 458 if (!func) { 459 DRM_DEBUG("no function\n"); 460 retcode = -EINVAL; 461 } else if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 462 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 463 ((ioctl->flags & DRM_MASTER) && !file_priv->is_master) || 464 (!(ioctl->flags & DRM_CONTROL_ALLOW) && (file_priv->minor->type == DRM_MINOR_CONTROL))) { 465 retcode = -EACCES; 466 } else { 467 if (ioctl->flags & DRM_UNLOCKED) 468 retcode = func(dev, data, file_priv); 469 else { 470 sx_xlock(&drm_global_mutex); 471 retcode = func(dev, data, file_priv); 472 sx_xunlock(&drm_global_mutex); 473 } 474 } 475 476 err_i1: 477 atomic_dec(&dev->ioctl_count); 478 if (retcode == -ERESTARTSYS) { 479 /* 480 * FIXME: Find where in i915 ERESTARTSYS should be 481 * converted to EINTR. 482 */ 483 DRM_DEBUG("ret = %d -> %d\n", retcode, -EINTR); 484 retcode = -EINTR; 485 } 486 if (retcode) 487 DRM_DEBUG("ret = %d\n", retcode); 488 if (retcode != 0 && 489 (drm_debug & DRM_DEBUGBITS_FAILED_IOCTL) != 0) { 490 printf( 491 "pid %d, cmd 0x%02lx, nr 0x%02x, dev 0x%lx, auth %d, res %d\n", 492 DRM_CURRENTPID, cmd, nr, (long)file_priv->minor->device, 493 file_priv->authenticated, -retcode); 494 } 495 496 return -retcode; 497 } 498 EXPORT_SYMBOL(drm_ioctl); 499 500 struct drm_local_map *drm_getsarea(struct drm_device *dev) 501 { 502 struct drm_map_list *entry; 503 504 list_for_each_entry(entry, &dev->maplist, head) { 505 if (entry->map && entry->map->type == _DRM_SHM && 506 (entry->map->flags & _DRM_CONTAINS_LOCK)) { 507 return entry->map; 508 } 509 } 510 return NULL; 511 } 512 EXPORT_SYMBOL(drm_getsarea); 513