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