1 /* 2 * Copyright (c) 2016 Intel Corporation 3 * 4 * Permission to use, copy, modify, distribute, and sell this software and its 5 * documentation for any purpose is hereby granted without fee, provided that 6 * the above copyright notice appear in all copies and that both that copyright 7 * notice and this permission notice appear in supporting documentation, and 8 * that the name of the copyright holders not be used in advertising or 9 * publicity pertaining to distribution of the software without specific, 10 * written prior permission. The copyright holders make no representations 11 * about the suitability of this software for any purpose. It is provided "as 12 * is" without express or implied warranty. 13 * 14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 20 * OF THIS SOFTWARE. 21 */ 22 23 #ifndef __DRM_MODE_CONFIG_H__ 24 #define __DRM_MODE_CONFIG_H__ 25 26 #include <linux/mutex.h> 27 #include <linux/types.h> 28 #include <linux/idr.h> 29 #include <linux/workqueue.h> 30 31 #include <drm/drm_modeset_lock.h> 32 33 struct drm_file; 34 struct drm_device; 35 struct drm_atomic_state; 36 struct drm_mode_fb_cmd2; 37 38 /** 39 * struct drm_mode_config_funcs - basic driver provided mode setting functions 40 * 41 * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that 42 * involve drivers. 43 */ 44 struct drm_mode_config_funcs { 45 /** 46 * @fb_create: 47 * 48 * Create a new framebuffer object. The core does basic checks on the 49 * requested metadata, but most of that is left to the driver. See 50 * &struct drm_mode_fb_cmd2 for details. 51 * 52 * If the parameters are deemed valid and the backing storage objects in 53 * the underlying memory manager all exist, then the driver allocates 54 * a new &drm_framebuffer structure, subclassed to contain 55 * driver-specific information (like the internal native buffer object 56 * references). It also needs to fill out all relevant metadata, which 57 * should be done by calling drm_helper_mode_fill_fb_struct(). 58 * 59 * The initialization is finalized by calling drm_framebuffer_init(), 60 * which registers the framebuffer and makes it accessible to other 61 * threads. 62 * 63 * RETURNS: 64 * 65 * A new framebuffer with an initial reference count of 1 or a negative 66 * error code encoded with ERR_PTR(). 67 */ 68 struct drm_framebuffer *(*fb_create)(struct drm_device *dev, 69 struct drm_file *file_priv, 70 const struct drm_mode_fb_cmd2 *mode_cmd); 71 72 /** 73 * @output_poll_changed: 74 * 75 * Callback used by helpers to inform the driver of output configuration 76 * changes. 77 * 78 * Drivers implementing fbdev emulation with the helpers can call 79 * drm_fb_helper_hotplug_changed from this hook to inform the fbdev 80 * helper of output changes. 81 * 82 * FIXME: 83 * 84 * Except that there's no vtable for device-level helper callbacks 85 * there's no reason this is a core function. 86 */ 87 void (*output_poll_changed)(struct drm_device *dev); 88 89 /** 90 * @atomic_check: 91 * 92 * This is the only hook to validate an atomic modeset update. This 93 * function must reject any modeset and state changes which the hardware 94 * or driver doesn't support. This includes but is of course not limited 95 * to: 96 * 97 * - Checking that the modes, framebuffers, scaling and placement 98 * requirements and so on are within the limits of the hardware. 99 * 100 * - Checking that any hidden shared resources are not oversubscribed. 101 * This can be shared PLLs, shared lanes, overall memory bandwidth, 102 * display fifo space (where shared between planes or maybe even 103 * CRTCs). 104 * 105 * - Checking that virtualized resources exported to userspace are not 106 * oversubscribed. For various reasons it can make sense to expose 107 * more planes, crtcs or encoders than which are physically there. One 108 * example is dual-pipe operations (which generally should be hidden 109 * from userspace if when lockstepped in hardware, exposed otherwise), 110 * where a plane might need 1 hardware plane (if it's just on one 111 * pipe), 2 hardware planes (when it spans both pipes) or maybe even 112 * shared a hardware plane with a 2nd plane (if there's a compatible 113 * plane requested on the area handled by the other pipe). 114 * 115 * - Check that any transitional state is possible and that if 116 * requested, the update can indeed be done in the vblank period 117 * without temporarily disabling some functions. 118 * 119 * - Check any other constraints the driver or hardware might have. 120 * 121 * - This callback also needs to correctly fill out the &drm_crtc_state 122 * in this update to make sure that drm_atomic_crtc_needs_modeset() 123 * reflects the nature of the possible update and returns true if and 124 * only if the update cannot be applied without tearing within one 125 * vblank on that CRTC. The core uses that information to reject 126 * updates which require a full modeset (i.e. blanking the screen, or 127 * at least pausing updates for a substantial amount of time) if 128 * userspace has disallowed that in its request. 129 * 130 * - The driver also does not need to repeat basic input validation 131 * like done for the corresponding legacy entry points. The core does 132 * that before calling this hook. 133 * 134 * See the documentation of @atomic_commit for an exhaustive list of 135 * error conditions which don't have to be checked at the in this 136 * callback. 137 * 138 * See the documentation for &struct drm_atomic_state for how exactly 139 * an atomic modeset update is described. 140 * 141 * Drivers using the atomic helpers can implement this hook using 142 * drm_atomic_helper_check(), or one of the exported sub-functions of 143 * it. 144 * 145 * RETURNS: 146 * 147 * 0 on success or one of the below negative error codes: 148 * 149 * - -EINVAL, if any of the above constraints are violated. 150 * 151 * - -EDEADLK, when returned from an attempt to acquire an additional 152 * &drm_modeset_lock through drm_modeset_lock(). 153 * 154 * - -ENOMEM, if allocating additional state sub-structures failed due 155 * to lack of memory. 156 * 157 * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted. 158 * This can either be due to a pending signal, or because the driver 159 * needs to completely bail out to recover from an exceptional 160 * situation like a GPU hang. From a userspace point all errors are 161 * treated equally. 162 */ 163 int (*atomic_check)(struct drm_device *dev, 164 struct drm_atomic_state *state); 165 166 /** 167 * @atomic_commit: 168 * 169 * This is the only hook to commit an atomic modeset update. The core 170 * guarantees that @atomic_check has been called successfully before 171 * calling this function, and that nothing has been changed in the 172 * interim. 173 * 174 * See the documentation for &struct drm_atomic_state for how exactly 175 * an atomic modeset update is described. 176 * 177 * Drivers using the atomic helpers can implement this hook using 178 * drm_atomic_helper_commit(), or one of the exported sub-functions of 179 * it. 180 * 181 * Nonblocking commits (as indicated with the nonblock parameter) must 182 * do any preparatory work which might result in an unsuccessful commit 183 * in the context of this callback. The only exceptions are hardware 184 * errors resulting in -EIO. But even in that case the driver must 185 * ensure that the display pipe is at least running, to avoid 186 * compositors crashing when pageflips don't work. Anything else, 187 * specifically committing the update to the hardware, should be done 188 * without blocking the caller. For updates which do not require a 189 * modeset this must be guaranteed. 190 * 191 * The driver must wait for any pending rendering to the new 192 * framebuffers to complete before executing the flip. It should also 193 * wait for any pending rendering from other drivers if the underlying 194 * buffer is a shared dma-buf. Nonblocking commits must not wait for 195 * rendering in the context of this callback. 196 * 197 * An application can request to be notified when the atomic commit has 198 * completed. These events are per-CRTC and can be distinguished by the 199 * CRTC index supplied in &drm_event to userspace. 200 * 201 * The drm core will supply a &struct drm_event in each CRTC's 202 * &drm_crtc_state.event. See the documentation for 203 * &drm_crtc_state.event for more details about the precise semantics of 204 * this event. 205 * 206 * NOTE: 207 * 208 * Drivers are not allowed to shut down any display pipe successfully 209 * enabled through an atomic commit on their own. Doing so can result in 210 * compositors crashing if a page flip is suddenly rejected because the 211 * pipe is off. 212 * 213 * RETURNS: 214 * 215 * 0 on success or one of the below negative error codes: 216 * 217 * - -EBUSY, if a nonblocking updated is requested and there is 218 * an earlier updated pending. Drivers are allowed to support a queue 219 * of outstanding updates, but currently no driver supports that. 220 * Note that drivers must wait for preceding updates to complete if a 221 * synchronous update is requested, they are not allowed to fail the 222 * commit in that case. 223 * 224 * - -ENOMEM, if the driver failed to allocate memory. Specifically 225 * this can happen when trying to pin framebuffers, which must only 226 * be done when committing the state. 227 * 228 * - -ENOSPC, as a refinement of the more generic -ENOMEM to indicate 229 * that the driver has run out of vram, iommu space or similar GPU 230 * address space needed for framebuffer. 231 * 232 * - -EIO, if the hardware completely died. 233 * 234 * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted. 235 * This can either be due to a pending signal, or because the driver 236 * needs to completely bail out to recover from an exceptional 237 * situation like a GPU hang. From a userspace point of view all errors are 238 * treated equally. 239 * 240 * This list is exhaustive. Specifically this hook is not allowed to 241 * return -EINVAL (any invalid requests should be caught in 242 * @atomic_check) or -EDEADLK (this function must not acquire 243 * additional modeset locks). 244 */ 245 int (*atomic_commit)(struct drm_device *dev, 246 struct drm_atomic_state *state, 247 bool nonblock); 248 249 /** 250 * @atomic_state_alloc: 251 * 252 * This optional hook can be used by drivers that want to subclass struct 253 * &drm_atomic_state to be able to track their own driver-private global 254 * state easily. If this hook is implemented, drivers must also 255 * implement @atomic_state_clear and @atomic_state_free. 256 * 257 * RETURNS: 258 * 259 * A new &drm_atomic_state on success or NULL on failure. 260 */ 261 struct drm_atomic_state *(*atomic_state_alloc)(struct drm_device *dev); 262 263 /** 264 * @atomic_state_clear: 265 * 266 * This hook must clear any driver private state duplicated into the 267 * passed-in &drm_atomic_state. This hook is called when the caller 268 * encountered a &drm_modeset_lock deadlock and needs to drop all 269 * already acquired locks as part of the deadlock avoidance dance 270 * implemented in drm_modeset_lock_backoff(). 271 * 272 * Any duplicated state must be invalidated since a concurrent atomic 273 * update might change it, and the drm atomic interfaces always apply 274 * updates as relative changes to the current state. 275 * 276 * Drivers that implement this must call drm_atomic_state_default_clear() 277 * to clear common state. 278 */ 279 void (*atomic_state_clear)(struct drm_atomic_state *state); 280 281 /** 282 * @atomic_state_free: 283 * 284 * This hook needs driver private resources and the &drm_atomic_state 285 * itself. Note that the core first calls drm_atomic_state_clear() to 286 * avoid code duplicate between the clear and free hooks. 287 * 288 * Drivers that implement this must call drm_atomic_state_default_free() 289 * to release common resources. 290 */ 291 void (*atomic_state_free)(struct drm_atomic_state *state); 292 }; 293 294 /** 295 * struct drm_mode_config - Mode configuration control structure 296 * @mutex: mutex protecting KMS related lists and structures 297 * @connection_mutex: ww mutex protecting connector state and routing 298 * @acquire_ctx: global implicit acquire context used by atomic drivers for 299 * legacy IOCTLs 300 * @fb_lock: mutex to protect fb state and lists 301 * @num_fb: number of fbs available 302 * @fb_list: list of framebuffers available 303 * @num_encoder: number of encoders on this device 304 * @encoder_list: list of encoder objects 305 * @num_overlay_plane: number of overlay planes on this device 306 * @num_total_plane: number of universal (i.e. with primary/curso) planes on this device 307 * @plane_list: list of plane objects 308 * @num_crtc: number of CRTCs on this device 309 * @crtc_list: list of CRTC objects 310 * @property_list: list of property objects 311 * @min_width: minimum pixel width on this device 312 * @min_height: minimum pixel height on this device 313 * @max_width: maximum pixel width on this device 314 * @max_height: maximum pixel height on this device 315 * @funcs: core driver provided mode setting functions 316 * @fb_base: base address of the framebuffer 317 * @poll_enabled: track polling support for this device 318 * @poll_running: track polling status for this device 319 * @delayed_event: track delayed poll uevent deliver for this device 320 * @output_poll_work: delayed work for polling in process context 321 * @property_blob_list: list of all the blob property objects 322 * @blob_lock: mutex for blob property allocation and management 323 * @*_property: core property tracking 324 * @preferred_depth: preferred RBG pixel depth, used by fb helpers 325 * @prefer_shadow: hint to userspace to prefer shadow-fb rendering 326 * @cursor_width: hint to userspace for max cursor width 327 * @cursor_height: hint to userspace for max cursor height 328 * @helper_private: mid-layer private data 329 * 330 * Core mode resource tracking structure. All CRTC, encoders, and connectors 331 * enumerated by the driver are added here, as are global properties. Some 332 * global restrictions are also here, e.g. dimension restrictions. 333 */ 334 struct drm_mode_config { 335 struct mutex mutex; /* protects configuration (mode lists etc.) */ 336 struct drm_modeset_lock connection_mutex; /* protects connector->encoder and encoder->crtc links */ 337 struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */ 338 339 /** 340 * @idr_mutex: 341 * 342 * Mutex for KMS ID allocation and management. Protects both @crtc_idr 343 * and @tile_idr. 344 */ 345 struct mutex idr_mutex; 346 347 /** 348 * @crtc_idr: 349 * 350 * Main KMS ID tracking object. Use this idr for all IDs, fb, crtc, 351 * connector, modes - just makes life easier to have only one. 352 */ 353 struct idr crtc_idr; 354 355 /** 356 * @tile_idr: 357 * 358 * Use this idr for allocating new IDs for tiled sinks like use in some 359 * high-res DP MST screens. 360 */ 361 struct idr tile_idr; 362 363 struct mutex fb_lock; /* proctects global and per-file fb lists */ 364 int num_fb; 365 struct list_head fb_list; 366 367 /** 368 * @connector_list_lock: Protects @num_connector and 369 * @connector_list. 370 */ 371 spinlock_t connector_list_lock; 372 /** 373 * @num_connector: Number of connectors on this device. Protected by 374 * @connector_list_lock. 375 */ 376 int num_connector; 377 /** 378 * @connector_ida: ID allocator for connector indices. 379 */ 380 struct ida connector_ida; 381 /** 382 * @connector_list: List of connector objects. Protected by 383 * @connector_list_lock. Only use drm_for_each_connector_iter() and 384 * &struct drm_connector_list_iter to walk this list. 385 */ 386 struct list_head connector_list; 387 int num_encoder; 388 struct list_head encoder_list; 389 390 /* 391 * Track # of overlay planes separately from # of total planes. By 392 * default we only advertise overlay planes to userspace; if userspace 393 * sets the "universal plane" capability bit, we'll go ahead and 394 * expose all planes. 395 */ 396 int num_overlay_plane; 397 int num_total_plane; 398 struct list_head plane_list; 399 400 int num_crtc; 401 struct list_head crtc_list; 402 403 struct list_head property_list; 404 405 int min_width, min_height; 406 int max_width, max_height; 407 const struct drm_mode_config_funcs *funcs; 408 resource_size_t fb_base; 409 410 /* output poll support */ 411 bool poll_enabled; 412 bool poll_running; 413 bool delayed_event; 414 struct delayed_work output_poll_work; 415 416 struct mutex blob_lock; 417 418 /* pointers to standard properties */ 419 struct list_head property_blob_list; 420 /** 421 * @edid_property: Default connector property to hold the EDID of the 422 * currently connected sink, if any. 423 */ 424 struct drm_property *edid_property; 425 /** 426 * @dpms_property: Default connector property to control the 427 * connector's DPMS state. 428 */ 429 struct drm_property *dpms_property; 430 /** 431 * @path_property: Default connector property to hold the DP MST path 432 * for the port. 433 */ 434 struct drm_property *path_property; 435 /** 436 * @tile_property: Default connector property to store the tile 437 * position of a tiled screen, for sinks which need to be driven with 438 * multiple CRTCs. 439 */ 440 struct drm_property *tile_property; 441 /** 442 * @plane_type_property: Default plane property to differentiate 443 * CURSOR, PRIMARY and OVERLAY legacy uses of planes. 444 */ 445 struct drm_property *plane_type_property; 446 /** 447 * @prop_src_x: Default atomic plane property for the plane source 448 * position in the connected &drm_framebuffer. 449 */ 450 struct drm_property *prop_src_x; 451 /** 452 * @prop_src_y: Default atomic plane property for the plane source 453 * position in the connected &drm_framebuffer. 454 */ 455 struct drm_property *prop_src_y; 456 /** 457 * @prop_src_w: Default atomic plane property for the plane source 458 * position in the connected &drm_framebuffer. 459 */ 460 struct drm_property *prop_src_w; 461 /** 462 * @prop_src_h: Default atomic plane property for the plane source 463 * position in the connected &drm_framebuffer. 464 */ 465 struct drm_property *prop_src_h; 466 /** 467 * @prop_crtc_x: Default atomic plane property for the plane destination 468 * position in the &drm_crtc is is being shown on. 469 */ 470 struct drm_property *prop_crtc_x; 471 /** 472 * @prop_crtc_y: Default atomic plane property for the plane destination 473 * position in the &drm_crtc is is being shown on. 474 */ 475 struct drm_property *prop_crtc_y; 476 /** 477 * @prop_crtc_w: Default atomic plane property for the plane destination 478 * position in the &drm_crtc is is being shown on. 479 */ 480 struct drm_property *prop_crtc_w; 481 /** 482 * @prop_crtc_h: Default atomic plane property for the plane destination 483 * position in the &drm_crtc is is being shown on. 484 */ 485 struct drm_property *prop_crtc_h; 486 /** 487 * @prop_fb_id: Default atomic plane property to specify the 488 * &drm_framebuffer. 489 */ 490 struct drm_property *prop_fb_id; 491 /** 492 * @prop_in_fence_fd: Sync File fd representing the incoming fences 493 * for a Plane. 494 */ 495 struct drm_property *prop_in_fence_fd; 496 /** 497 * @prop_out_fence_ptr: Sync File fd pointer representing the 498 * outgoing fences for a CRTC. Userspace should provide a pointer to a 499 * value of type s32, and then cast that pointer to u64. 500 */ 501 struct drm_property *prop_out_fence_ptr; 502 /** 503 * @prop_crtc_id: Default atomic plane property to specify the 504 * &drm_crtc. 505 */ 506 struct drm_property *prop_crtc_id; 507 /** 508 * @prop_active: Default atomic CRTC property to control the active 509 * state, which is the simplified implementation for DPMS in atomic 510 * drivers. 511 */ 512 struct drm_property *prop_active; 513 /** 514 * @prop_mode_id: Default atomic CRTC property to set the mode for a 515 * CRTC. A 0 mode implies that the CRTC is entirely disabled - all 516 * connectors must be of and active must be set to disabled, too. 517 */ 518 struct drm_property *prop_mode_id; 519 520 /** 521 * @dvi_i_subconnector_property: Optional DVI-I property to 522 * differentiate between analog or digital mode. 523 */ 524 struct drm_property *dvi_i_subconnector_property; 525 /** 526 * @dvi_i_select_subconnector_property: Optional DVI-I property to 527 * select between analog or digital mode. 528 */ 529 struct drm_property *dvi_i_select_subconnector_property; 530 531 /** 532 * @tv_subconnector_property: Optional TV property to differentiate 533 * between different TV connector types. 534 */ 535 struct drm_property *tv_subconnector_property; 536 /** 537 * @tv_select_subconnector_property: Optional TV property to select 538 * between different TV connector types. 539 */ 540 struct drm_property *tv_select_subconnector_property; 541 /** 542 * @tv_mode_property: Optional TV property to select 543 * the output TV mode. 544 */ 545 struct drm_property *tv_mode_property; 546 /** 547 * @tv_left_margin_property: Optional TV property to set the left 548 * margin. 549 */ 550 struct drm_property *tv_left_margin_property; 551 /** 552 * @tv_right_margin_property: Optional TV property to set the right 553 * margin. 554 */ 555 struct drm_property *tv_right_margin_property; 556 /** 557 * @tv_top_margin_property: Optional TV property to set the right 558 * margin. 559 */ 560 struct drm_property *tv_top_margin_property; 561 /** 562 * @tv_bottom_margin_property: Optional TV property to set the right 563 * margin. 564 */ 565 struct drm_property *tv_bottom_margin_property; 566 /** 567 * @tv_brightness_property: Optional TV property to set the 568 * brightness. 569 */ 570 struct drm_property *tv_brightness_property; 571 /** 572 * @tv_contrast_property: Optional TV property to set the 573 * contrast. 574 */ 575 struct drm_property *tv_contrast_property; 576 /** 577 * @tv_flicker_reduction_property: Optional TV property to control the 578 * flicker reduction mode. 579 */ 580 struct drm_property *tv_flicker_reduction_property; 581 /** 582 * @tv_overscan_property: Optional TV property to control the overscan 583 * setting. 584 */ 585 struct drm_property *tv_overscan_property; 586 /** 587 * @tv_saturation_property: Optional TV property to set the 588 * saturation. 589 */ 590 struct drm_property *tv_saturation_property; 591 /** 592 * @tv_hue_property: Optional TV property to set the hue. 593 */ 594 struct drm_property *tv_hue_property; 595 596 /** 597 * @scaling_mode_property: Optional connector property to control the 598 * upscaling, mostly used for built-in panels. 599 */ 600 struct drm_property *scaling_mode_property; 601 /** 602 * @aspect_ratio_property: Optional connector property to control the 603 * HDMI infoframe aspect ratio setting. 604 */ 605 struct drm_property *aspect_ratio_property; 606 /** 607 * @degamma_lut_property: Optional CRTC property to set the LUT used to 608 * convert the framebuffer's colors to linear gamma. 609 */ 610 struct drm_property *degamma_lut_property; 611 /** 612 * @degamma_lut_size_property: Optional CRTC property for the size of 613 * the degamma LUT as supported by the driver (read-only). 614 */ 615 struct drm_property *degamma_lut_size_property; 616 /** 617 * @ctm_property: Optional CRTC property to set the 618 * matrix used to convert colors after the lookup in the 619 * degamma LUT. 620 */ 621 struct drm_property *ctm_property; 622 /** 623 * @gamma_lut_property: Optional CRTC property to set the LUT used to 624 * convert the colors, after the CTM matrix, to the gamma space of the 625 * connected screen. 626 */ 627 struct drm_property *gamma_lut_property; 628 /** 629 * @gamma_lut_size_property: Optional CRTC property for the size of the 630 * gamma LUT as supported by the driver (read-only). 631 */ 632 struct drm_property *gamma_lut_size_property; 633 634 /** 635 * @suggested_x_property: Optional connector property with a hint for 636 * the position of the output on the host's screen. 637 */ 638 struct drm_property *suggested_x_property; 639 /** 640 * @suggested_y_property: Optional connector property with a hint for 641 * the position of the output on the host's screen. 642 */ 643 struct drm_property *suggested_y_property; 644 645 /* dumb ioctl parameters */ 646 uint32_t preferred_depth, prefer_shadow; 647 648 /** 649 * @async_page_flip: Does this device support async flips on the primary 650 * plane? 651 */ 652 bool async_page_flip; 653 654 /** 655 * @allow_fb_modifiers: 656 * 657 * Whether the driver supports fb modifiers in the ADDFB2.1 ioctl call. 658 */ 659 bool allow_fb_modifiers; 660 661 /* cursor size */ 662 uint32_t cursor_width, cursor_height; 663 664 struct drm_mode_config_helper_funcs *helper_private; 665 }; 666 667 void drm_mode_config_init(struct drm_device *dev); 668 void drm_mode_config_reset(struct drm_device *dev); 669 void drm_mode_config_cleanup(struct drm_device *dev); 670 671 #endif 672