aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorDaniel Vetter <daniel.vetter@ffwll.ch>2016-08-15 10:07:02 -0400
committerDaniel Vetter <daniel.vetter@ffwll.ch>2016-08-16 10:49:03 -0400
commit7520a277d97be6e8a8ec038bb5ed01f40d4f9aeb (patch)
tree23ef983aeb5fc94f9123043f3612eff0831bb862
parent5d070be68380baf61279d650b52563243cfaaa00 (diff)
drm: Extract drm_framebuffer.[hc]
Also start with drm_modeset.h with the core bits, since we need to untangle this mess somehow. That allows us to move the drm_modes.h include to the right spot, except for the temporary connector status enum. That will get fixed as soon as drm_connector.h exists. v2: Rebase. v3: Move drm_crtc_force_disable_all back again, that wasn't meant to be moved (Sean). v4: Rebase. Cc: Sean Paul <seanpaul@chromium.org> Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat
-rw-r--r--Documentation/gpu/drm-kms.rst9
-rw-r--r--drivers/gpu/drm/Makefile3
-rw-r--r--drivers/gpu/drm/drm_crtc.c801
-rw-r--r--drivers/gpu/drm/drm_crtc_internal.h40
-rw-r--r--drivers/gpu/drm/drm_framebuffer.c796
-rw-r--r--include/drm/drm_crtc.h162
-rw-r--r--include/drm/drm_framebuffer.h170
-rw-r--r--include/drm/drm_modes.h2
-rw-r--r--include/drm/drm_modeset.h50
9 files changed, 1075 insertions, 958 deletions
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index 3ae4c12aca08..8264a88a8695 100644
--- a/Documentation/gpu/drm-kms.rst
+++ b/Documentation/gpu/drm-kms.rst
@@ -64,6 +64,15 @@ fbdev framebuffer when the struct :c:type:`struct drm_framebuffer
64drivers can manually clean up a framebuffer at module unload time with 64drivers can manually clean up a framebuffer at module unload time with
65:c:func:`drm_framebuffer_unregister_private()`. 65:c:func:`drm_framebuffer_unregister_private()`.
66 66
67Frame Buffer Functions Reference
68--------------------------------
69
70.. kernel-doc:: drivers/gpu/drm/drm_framebuffer.c
71 :export:
72
73.. kernel-doc:: include/drm/drm_framebuffer.h
74 :internal:
75
67DRM Format Handling 76DRM Format Handling
68=================== 77===================
69 78
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index a5824d926dc9..c71ec42ce511 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -12,7 +12,8 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
12 drm_info.o drm_debugfs.o drm_encoder_slave.o \ 12 drm_info.o drm_debugfs.o drm_encoder_slave.o \
13 drm_trace_points.o drm_global.o drm_prime.o \ 13 drm_trace_points.o drm_global.o drm_prime.o \
14 drm_rect.o drm_vma_manager.o drm_flip_work.o \ 14 drm_rect.o drm_vma_manager.o drm_flip_work.o \
15 drm_modeset_lock.o drm_atomic.o drm_bridge.o 15 drm_modeset_lock.o drm_atomic.o drm_bridge.o \
16 drm_framebuffer.o
16 17
17drm-$(CONFIG_COMPAT) += drm_ioc32.o 18drm-$(CONFIG_COMPAT) += drm_ioc32.o
18drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o 19drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index eb7aba874652..d596a491b517 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -40,15 +40,11 @@
40#include <drm/drm_modeset_lock.h> 40#include <drm/drm_modeset_lock.h>
41#include <drm/drm_atomic.h> 41#include <drm/drm_atomic.h>
42#include <drm/drm_auth.h> 42#include <drm/drm_auth.h>
43#include <drm/drm_framebuffer.h>
43 44
44#include "drm_crtc_internal.h" 45#include "drm_crtc_internal.h"
45#include "drm_internal.h" 46#include "drm_internal.h"
46 47
47static struct drm_framebuffer *
48internal_framebuffer_create(struct drm_device *dev,
49 const struct drm_mode_fb_cmd2 *r,
50 struct drm_file *file_priv);
51
52/* Avoid boilerplate. I'm tired of typing. */ 48/* Avoid boilerplate. I'm tired of typing. */
53#define DRM_ENUM_NAME_FN(fnname, list) \ 49#define DRM_ENUM_NAME_FN(fnname, list) \
54 const char *fnname(int val) \ 50 const char *fnname(int val) \
@@ -238,11 +234,11 @@ EXPORT_SYMBOL(drm_get_subpixel_order_name);
238 * Internal function to assign a slot in the object idr and optionally 234 * Internal function to assign a slot in the object idr and optionally
239 * register the object into the idr. 235 * register the object into the idr.
240 */ 236 */
241static int drm_mode_object_get_reg(struct drm_device *dev, 237int drm_mode_object_get_reg(struct drm_device *dev,
242 struct drm_mode_object *obj, 238 struct drm_mode_object *obj,
243 uint32_t obj_type, 239 uint32_t obj_type,
244 bool register_obj, 240 bool register_obj,
245 void (*obj_free_cb)(struct kref *kref)) 241 void (*obj_free_cb)(struct kref *kref))
246{ 242{
247 int ret; 243 int ret;
248 244
@@ -285,8 +281,8 @@ int drm_mode_object_get(struct drm_device *dev,
285 return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL); 281 return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
286} 282}
287 283
288static void drm_mode_object_register(struct drm_device *dev, 284void drm_mode_object_register(struct drm_device *dev,
289 struct drm_mode_object *obj) 285 struct drm_mode_object *obj)
290{ 286{
291 mutex_lock(&dev->mode_config.idr_mutex); 287 mutex_lock(&dev->mode_config.idr_mutex);
292 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id); 288 idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
@@ -315,8 +311,8 @@ void drm_mode_object_unregister(struct drm_device *dev,
315 mutex_unlock(&dev->mode_config.idr_mutex); 311 mutex_unlock(&dev->mode_config.idr_mutex);
316} 312}
317 313
318static struct drm_mode_object *_object_find(struct drm_device *dev, 314struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
319 uint32_t id, uint32_t type) 315 uint32_t id, uint32_t type)
320{ 316{
321 struct drm_mode_object *obj = NULL; 317 struct drm_mode_object *obj = NULL;
322 318
@@ -351,7 +347,7 @@ struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
351{ 347{
352 struct drm_mode_object *obj = NULL; 348 struct drm_mode_object *obj = NULL;
353 349
354 obj = _object_find(dev, id, type); 350 obj = __drm_mode_object_find(dev, id, type);
355 return obj; 351 return obj;
356} 352}
357EXPORT_SYMBOL(drm_mode_object_find); 353EXPORT_SYMBOL(drm_mode_object_find);
@@ -435,199 +431,6 @@ out:
435} 431}
436EXPORT_SYMBOL(drm_crtc_force_disable_all); 432EXPORT_SYMBOL(drm_crtc_force_disable_all);
437 433
438static void drm_framebuffer_free(struct kref *kref)
439{
440 struct drm_framebuffer *fb =
441 container_of(kref, struct drm_framebuffer, base.refcount);
442 struct drm_device *dev = fb->dev;
443
444 /*
445 * The lookup idr holds a weak reference, which has not necessarily been
446 * removed at this point. Check for that.
447 */
448 drm_mode_object_unregister(dev, &fb->base);
449
450 fb->funcs->destroy(fb);
451}
452
453/**
454 * drm_framebuffer_init - initialize a framebuffer
455 * @dev: DRM device
456 * @fb: framebuffer to be initialized
457 * @funcs: ... with these functions
458 *
459 * Allocates an ID for the framebuffer's parent mode object, sets its mode
460 * functions & device file and adds it to the master fd list.
461 *
462 * IMPORTANT:
463 * This functions publishes the fb and makes it available for concurrent access
464 * by other users. Which means by this point the fb _must_ be fully set up -
465 * since all the fb attributes are invariant over its lifetime, no further
466 * locking but only correct reference counting is required.
467 *
468 * Returns:
469 * Zero on success, error code on failure.
470 */
471int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
472 const struct drm_framebuffer_funcs *funcs)
473{
474 int ret;
475
476 INIT_LIST_HEAD(&fb->filp_head);
477 fb->dev = dev;
478 fb->funcs = funcs;
479
480 ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
481 false, drm_framebuffer_free);
482 if (ret)
483 goto out;
484
485 mutex_lock(&dev->mode_config.fb_lock);
486 dev->mode_config.num_fb++;
487 list_add(&fb->head, &dev->mode_config.fb_list);
488 mutex_unlock(&dev->mode_config.fb_lock);
489
490 drm_mode_object_register(dev, &fb->base);
491out:
492 return ret;
493}
494EXPORT_SYMBOL(drm_framebuffer_init);
495
496/**
497 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
498 * @dev: drm device
499 * @id: id of the fb object
500 *
501 * If successful, this grabs an additional reference to the framebuffer -
502 * callers need to make sure to eventually unreference the returned framebuffer
503 * again, using @drm_framebuffer_unreference.
504 */
505struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
506 uint32_t id)
507{
508 struct drm_mode_object *obj;
509 struct drm_framebuffer *fb = NULL;
510
511 obj = _object_find(dev, id, DRM_MODE_OBJECT_FB);
512 if (obj)
513 fb = obj_to_fb(obj);
514 return fb;
515}
516EXPORT_SYMBOL(drm_framebuffer_lookup);
517
518/**
519 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
520 * @fb: fb to unregister
521 *
522 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
523 * those used for fbdev. Note that the caller must hold a reference of it's own,
524 * i.e. the object may not be destroyed through this call (since it'll lead to a
525 * locking inversion).
526 */
527void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
528{
529 struct drm_device *dev;
530
531 if (!fb)
532 return;
533
534 dev = fb->dev;
535
536 /* Mark fb as reaped and drop idr ref. */
537 drm_mode_object_unregister(dev, &fb->base);
538}
539EXPORT_SYMBOL(drm_framebuffer_unregister_private);
540
541/**
542 * drm_framebuffer_cleanup - remove a framebuffer object
543 * @fb: framebuffer to remove
544 *
545 * Cleanup framebuffer. This function is intended to be used from the drivers
546 * ->destroy callback. It can also be used to clean up driver private
547 * framebuffers embedded into a larger structure.
548 *
549 * Note that this function does not remove the fb from active usuage - if it is
550 * still used anywhere, hilarity can ensue since userspace could call getfb on
551 * the id and get back -EINVAL. Obviously no concern at driver unload time.
552 *
553 * Also, the framebuffer will not be removed from the lookup idr - for
554 * user-created framebuffers this will happen in in the rmfb ioctl. For
555 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
556 * drm_framebuffer_unregister_private.
557 */
558void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
559{
560 struct drm_device *dev = fb->dev;
561
562 mutex_lock(&dev->mode_config.fb_lock);
563 list_del(&fb->head);
564 dev->mode_config.num_fb--;
565 mutex_unlock(&dev->mode_config.fb_lock);
566}
567EXPORT_SYMBOL(drm_framebuffer_cleanup);
568
569/**
570 * drm_framebuffer_remove - remove and unreference a framebuffer object
571 * @fb: framebuffer to remove
572 *
573 * Scans all the CRTCs and planes in @dev's mode_config. If they're
574 * using @fb, removes it, setting it to NULL. Then drops the reference to the
575 * passed-in framebuffer. Might take the modeset locks.
576 *
577 * Note that this function optimizes the cleanup away if the caller holds the
578 * last reference to the framebuffer. It is also guaranteed to not take the
579 * modeset locks in this case.
580 */
581void drm_framebuffer_remove(struct drm_framebuffer *fb)
582{
583 struct drm_device *dev;
584 struct drm_crtc *crtc;
585 struct drm_plane *plane;
586
587 if (!fb)
588 return;
589
590 dev = fb->dev;
591
592 WARN_ON(!list_empty(&fb->filp_head));
593
594 /*
595 * drm ABI mandates that we remove any deleted framebuffers from active
596 * useage. But since most sane clients only remove framebuffers they no
597 * longer need, try to optimize this away.
598 *
599 * Since we're holding a reference ourselves, observing a refcount of 1
600 * means that we're the last holder and can skip it. Also, the refcount
601 * can never increase from 1 again, so we don't need any barriers or
602 * locks.
603 *
604 * Note that userspace could try to race with use and instate a new
605 * usage _after_ we've cleared all current ones. End result will be an
606 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
607 * in this manner.
608 */
609 if (drm_framebuffer_read_refcount(fb) > 1) {
610 drm_modeset_lock_all(dev);
611 /* remove from any CRTC */
612 drm_for_each_crtc(crtc, dev) {
613 if (crtc->primary->fb == fb) {
614 /* should turn off the crtc */
615 if (drm_crtc_force_disable(crtc))
616 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
617 }
618 }
619
620 drm_for_each_plane(plane, dev) {
621 if (plane->fb == fb)
622 drm_plane_force_disable(plane);
623 }
624 drm_modeset_unlock_all(dev);
625 }
626
627 drm_framebuffer_unreference(fb);
628}
629EXPORT_SYMBOL(drm_framebuffer_remove);
630
631DEFINE_WW_CLASS(crtc_ww_class); 434DEFINE_WW_CLASS(crtc_ww_class);
632 435
633static unsigned int drm_num_crtcs(struct drm_device *dev) 436static unsigned int drm_num_crtcs(struct drm_device *dev)
@@ -3011,7 +2814,7 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc,
3011 */ 2814 */
3012 if (req->flags & DRM_MODE_CURSOR_BO) { 2815 if (req->flags & DRM_MODE_CURSOR_BO) {
3013 if (req->handle) { 2816 if (req->handle) {
3014 fb = internal_framebuffer_create(dev, &fbreq, file_priv); 2817 fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv);
3015 if (IS_ERR(fb)) { 2818 if (IS_ERR(fb)) {
3016 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n"); 2819 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
3017 return PTR_ERR(fb); 2820 return PTR_ERR(fb);
@@ -3209,581 +3012,6 @@ uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
3209} 3012}
3210EXPORT_SYMBOL(drm_mode_legacy_fb_format); 3013EXPORT_SYMBOL(drm_mode_legacy_fb_format);
3211 3014
3212/**
3213 * drm_mode_addfb - add an FB to the graphics configuration
3214 * @dev: drm device for the ioctl
3215 * @data: data pointer for the ioctl
3216 * @file_priv: drm file for the ioctl call
3217 *
3218 * Add a new FB to the specified CRTC, given a user request. This is the
3219 * original addfb ioctl which only supported RGB formats.
3220 *
3221 * Called by the user via ioctl.
3222 *
3223 * Returns:
3224 * Zero on success, negative errno on failure.
3225 */
3226int drm_mode_addfb(struct drm_device *dev,
3227 void *data, struct drm_file *file_priv)
3228{
3229 struct drm_mode_fb_cmd *or = data;
3230 struct drm_mode_fb_cmd2 r = {};
3231 int ret;
3232
3233 /* convert to new format and call new ioctl */
3234 r.fb_id = or->fb_id;
3235 r.width = or->width;
3236 r.height = or->height;
3237 r.pitches[0] = or->pitch;
3238 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
3239 r.handles[0] = or->handle;
3240
3241 ret = drm_mode_addfb2(dev, &r, file_priv);
3242 if (ret)
3243 return ret;
3244
3245 or->fb_id = r.fb_id;
3246
3247 return 0;
3248}
3249
3250static int format_check(const struct drm_mode_fb_cmd2 *r)
3251{
3252 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
3253 char *format_name;
3254
3255 switch (format) {
3256 case DRM_FORMAT_C8:
3257 case DRM_FORMAT_RGB332:
3258 case DRM_FORMAT_BGR233:
3259 case DRM_FORMAT_XRGB4444:
3260 case DRM_FORMAT_XBGR4444:
3261 case DRM_FORMAT_RGBX4444:
3262 case DRM_FORMAT_BGRX4444:
3263 case DRM_FORMAT_ARGB4444:
3264 case DRM_FORMAT_ABGR4444:
3265 case DRM_FORMAT_RGBA4444:
3266 case DRM_FORMAT_BGRA4444:
3267 case DRM_FORMAT_XRGB1555:
3268 case DRM_FORMAT_XBGR1555:
3269 case DRM_FORMAT_RGBX5551:
3270 case DRM_FORMAT_BGRX5551:
3271 case DRM_FORMAT_ARGB1555:
3272 case DRM_FORMAT_ABGR1555:
3273 case DRM_FORMAT_RGBA5551:
3274 case DRM_FORMAT_BGRA5551:
3275 case DRM_FORMAT_RGB565:
3276 case DRM_FORMAT_BGR565:
3277 case DRM_FORMAT_RGB888:
3278 case DRM_FORMAT_BGR888:
3279 case DRM_FORMAT_XRGB8888:
3280 case DRM_FORMAT_XBGR8888:
3281 case DRM_FORMAT_RGBX8888:
3282 case DRM_FORMAT_BGRX8888:
3283 case DRM_FORMAT_ARGB8888:
3284 case DRM_FORMAT_ABGR8888:
3285 case DRM_FORMAT_RGBA8888:
3286 case DRM_FORMAT_BGRA8888:
3287 case DRM_FORMAT_XRGB2101010:
3288 case DRM_FORMAT_XBGR2101010:
3289 case DRM_FORMAT_RGBX1010102:
3290 case DRM_FORMAT_BGRX1010102:
3291 case DRM_FORMAT_ARGB2101010:
3292 case DRM_FORMAT_ABGR2101010:
3293 case DRM_FORMAT_RGBA1010102:
3294 case DRM_FORMAT_BGRA1010102:
3295 case DRM_FORMAT_YUYV:
3296 case DRM_FORMAT_YVYU:
3297 case DRM_FORMAT_UYVY:
3298 case DRM_FORMAT_VYUY:
3299 case DRM_FORMAT_AYUV:
3300 case DRM_FORMAT_NV12:
3301 case DRM_FORMAT_NV21:
3302 case DRM_FORMAT_NV16:
3303 case DRM_FORMAT_NV61:
3304 case DRM_FORMAT_NV24:
3305 case DRM_FORMAT_NV42:
3306 case DRM_FORMAT_YUV410:
3307 case DRM_FORMAT_YVU410:
3308 case DRM_FORMAT_YUV411:
3309 case DRM_FORMAT_YVU411:
3310 case DRM_FORMAT_YUV420:
3311 case DRM_FORMAT_YVU420:
3312 case DRM_FORMAT_YUV422:
3313 case DRM_FORMAT_YVU422:
3314 case DRM_FORMAT_YUV444:
3315 case DRM_FORMAT_YVU444:
3316 return 0;
3317 default:
3318 format_name = drm_get_format_name(r->pixel_format);
3319 DRM_DEBUG_KMS("invalid pixel format %s\n", format_name);
3320 kfree(format_name);
3321 return -EINVAL;
3322 }
3323}
3324
3325static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
3326{
3327 int ret, hsub, vsub, num_planes, i;
3328
3329 ret = format_check(r);
3330 if (ret) {
3331 char *format_name = drm_get_format_name(r->pixel_format);
3332 DRM_DEBUG_KMS("bad framebuffer format %s\n", format_name);
3333 kfree(format_name);
3334 return ret;
3335 }
3336
3337 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
3338 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
3339 num_planes = drm_format_num_planes(r->pixel_format);
3340
3341 if (r->width == 0 || r->width % hsub) {
3342 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
3343 return -EINVAL;
3344 }
3345
3346 if (r->height == 0 || r->height % vsub) {
3347 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
3348 return -EINVAL;
3349 }
3350
3351 for (i = 0; i < num_planes; i++) {
3352 unsigned int width = r->width / (i != 0 ? hsub : 1);
3353 unsigned int height = r->height / (i != 0 ? vsub : 1);
3354 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
3355
3356 if (!r->handles[i]) {
3357 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
3358 return -EINVAL;
3359 }
3360
3361 if ((uint64_t) width * cpp > UINT_MAX)
3362 return -ERANGE;
3363
3364 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
3365 return -ERANGE;
3366
3367 if (r->pitches[i] < width * cpp) {
3368 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
3369 return -EINVAL;
3370 }
3371
3372 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
3373 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
3374 r->modifier[i], i);
3375 return -EINVAL;
3376 }
3377
3378 /* modifier specific checks: */
3379 switch (r->modifier[i]) {
3380 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
3381 /* NOTE: the pitch restriction may be lifted later if it turns
3382 * out that no hw has this restriction:
3383 */
3384 if (r->pixel_format != DRM_FORMAT_NV12 ||
3385 width % 128 || height % 32 ||
3386 r->pitches[i] % 128) {
3387 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
3388 return -EINVAL;
3389 }
3390 break;
3391
3392 default:
3393 break;
3394 }
3395 }
3396
3397 for (i = num_planes; i < 4; i++) {
3398 if (r->modifier[i]) {
3399 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
3400 return -EINVAL;
3401 }
3402
3403 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
3404 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
3405 continue;
3406
3407 if (r->handles[i]) {
3408 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
3409 return -EINVAL;
3410 }
3411
3412 if (r->pitches[i]) {
3413 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
3414 return -EINVAL;
3415 }
3416
3417 if (r->offsets[i]) {
3418 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
3419 return -EINVAL;
3420 }
3421 }
3422
3423 return 0;
3424}
3425
3426static struct drm_framebuffer *
3427internal_framebuffer_create(struct drm_device *dev,
3428 const struct drm_mode_fb_cmd2 *r,
3429 struct drm_file *file_priv)
3430{
3431 struct drm_mode_config *config = &dev->mode_config;
3432 struct drm_framebuffer *fb;
3433 int ret;
3434
3435 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
3436 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
3437 return ERR_PTR(-EINVAL);
3438 }
3439
3440 if ((config->min_width > r->width) || (r->width > config->max_width)) {
3441 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
3442 r->width, config->min_width, config->max_width);
3443 return ERR_PTR(-EINVAL);
3444 }
3445 if ((config->min_height > r->height) || (r->height > config->max_height)) {
3446 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
3447 r->height, config->min_height, config->max_height);
3448 return ERR_PTR(-EINVAL);
3449 }
3450
3451 if (r->flags & DRM_MODE_FB_MODIFIERS &&
3452 !dev->mode_config.allow_fb_modifiers) {
3453 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
3454 return ERR_PTR(-EINVAL);
3455 }
3456
3457 ret = framebuffer_check(r);
3458 if (ret)
3459 return ERR_PTR(ret);
3460
3461 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
3462 if (IS_ERR(fb)) {
3463 DRM_DEBUG_KMS("could not create framebuffer\n");
3464 return fb;
3465 }
3466
3467 return fb;
3468}
3469
3470/**
3471 * drm_mode_addfb2 - add an FB to the graphics configuration
3472 * @dev: drm device for the ioctl
3473 * @data: data pointer for the ioctl
3474 * @file_priv: drm file for the ioctl call
3475 *
3476 * Add a new FB to the specified CRTC, given a user request with format. This is
3477 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
3478 * and uses fourcc codes as pixel format specifiers.
3479 *
3480 * Called by the user via ioctl.
3481 *
3482 * Returns:
3483 * Zero on success, negative errno on failure.
3484 */
3485int drm_mode_addfb2(struct drm_device *dev,
3486 void *data, struct drm_file *file_priv)
3487{
3488 struct drm_mode_fb_cmd2 *r = data;
3489 struct drm_framebuffer *fb;
3490
3491 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3492 return -EINVAL;
3493
3494 fb = internal_framebuffer_create(dev, r, file_priv);
3495 if (IS_ERR(fb))
3496 return PTR_ERR(fb);
3497
3498 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
3499 r->fb_id = fb->base.id;
3500
3501 /* Transfer ownership to the filp for reaping on close */
3502 mutex_lock(&file_priv->fbs_lock);
3503 list_add(&fb->filp_head, &file_priv->fbs);
3504 mutex_unlock(&file_priv->fbs_lock);
3505
3506 return 0;
3507}
3508
3509struct drm_mode_rmfb_work {
3510 struct work_struct work;
3511 struct list_head fbs;
3512};
3513
3514static void drm_mode_rmfb_work_fn(struct work_struct *w)
3515{
3516 struct drm_mode_rmfb_work *arg = container_of(w, typeof(*arg), work);
3517
3518 while (!list_empty(&arg->fbs)) {
3519 struct drm_framebuffer *fb =
3520 list_first_entry(&arg->fbs, typeof(*fb), filp_head);
3521
3522 list_del_init(&fb->filp_head);
3523 drm_framebuffer_remove(fb);
3524 }
3525}
3526
3527/**
3528 * drm_mode_rmfb - remove an FB from the configuration
3529 * @dev: drm device for the ioctl
3530 * @data: data pointer for the ioctl
3531 * @file_priv: drm file for the ioctl call
3532 *
3533 * Remove the FB specified by the user.
3534 *
3535 * Called by the user via ioctl.
3536 *
3537 * Returns:
3538 * Zero on success, negative errno on failure.
3539 */
3540int drm_mode_rmfb(struct drm_device *dev,
3541 void *data, struct drm_file *file_priv)
3542{
3543 struct drm_framebuffer *fb = NULL;
3544 struct drm_framebuffer *fbl = NULL;
3545 uint32_t *id = data;
3546 int found = 0;
3547
3548 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3549 return -EINVAL;
3550
3551 fb = drm_framebuffer_lookup(dev, *id);
3552 if (!fb)
3553 return -ENOENT;
3554
3555 mutex_lock(&file_priv->fbs_lock);
3556 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
3557 if (fb == fbl)
3558 found = 1;
3559 if (!found) {
3560 mutex_unlock(&file_priv->fbs_lock);
3561 goto fail_unref;
3562 }
3563
3564 list_del_init(&fb->filp_head);
3565 mutex_unlock(&file_priv->fbs_lock);
3566
3567 /* drop the reference we picked up in framebuffer lookup */
3568 drm_framebuffer_unreference(fb);
3569
3570 /*
3571 * we now own the reference that was stored in the fbs list
3572 *
3573 * drm_framebuffer_remove may fail with -EINTR on pending signals,
3574 * so run this in a separate stack as there's no way to correctly
3575 * handle this after the fb is already removed from the lookup table.
3576 */
3577 if (drm_framebuffer_read_refcount(fb) > 1) {
3578 struct drm_mode_rmfb_work arg;
3579
3580 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
3581 INIT_LIST_HEAD(&arg.fbs);
3582 list_add_tail(&fb->filp_head, &arg.fbs);
3583
3584 schedule_work(&arg.work);
3585 flush_work(&arg.work);
3586 destroy_work_on_stack(&arg.work);
3587 } else
3588 drm_framebuffer_unreference(fb);
3589
3590 return 0;
3591
3592fail_unref:
3593 drm_framebuffer_unreference(fb);
3594 return -ENOENT;
3595}
3596
3597/**
3598 * drm_mode_getfb - get FB info
3599 * @dev: drm device for the ioctl
3600 * @data: data pointer for the ioctl
3601 * @file_priv: drm file for the ioctl call
3602 *
3603 * Lookup the FB given its ID and return info about it.
3604 *
3605 * Called by the user via ioctl.
3606 *
3607 * Returns:
3608 * Zero on success, negative errno on failure.
3609 */
3610int drm_mode_getfb(struct drm_device *dev,
3611 void *data, struct drm_file *file_priv)
3612{
3613 struct drm_mode_fb_cmd *r = data;
3614 struct drm_framebuffer *fb;
3615 int ret;
3616
3617 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3618 return -EINVAL;
3619
3620 fb = drm_framebuffer_lookup(dev, r->fb_id);
3621 if (!fb)
3622 return -ENOENT;
3623
3624 r->height = fb->height;
3625 r->width = fb->width;
3626 r->depth = fb->depth;
3627 r->bpp = fb->bits_per_pixel;
3628 r->pitch = fb->pitches[0];
3629 if (fb->funcs->create_handle) {
3630 if (drm_is_current_master(file_priv) || capable(CAP_SYS_ADMIN) ||
3631 drm_is_control_client(file_priv)) {
3632 ret = fb->funcs->create_handle(fb, file_priv,
3633 &r->handle);
3634 } else {
3635 /* GET_FB() is an unprivileged ioctl so we must not
3636 * return a buffer-handle to non-master processes! For
3637 * backwards-compatibility reasons, we cannot make
3638 * GET_FB() privileged, so just return an invalid handle
3639 * for non-masters. */
3640 r->handle = 0;
3641 ret = 0;
3642 }
3643 } else {
3644 ret = -ENODEV;
3645 }
3646
3647 drm_framebuffer_unreference(fb);
3648
3649 return ret;
3650}
3651
3652/**
3653 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
3654 * @dev: drm device for the ioctl
3655 * @data: data pointer for the ioctl
3656 * @file_priv: drm file for the ioctl call
3657 *
3658 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
3659 * rectangle list. Generic userspace which does frontbuffer rendering must call
3660 * this ioctl to flush out the changes on manual-update display outputs, e.g.
3661 * usb display-link, mipi manual update panels or edp panel self refresh modes.
3662 *
3663 * Modesetting drivers which always update the frontbuffer do not need to
3664 * implement the corresponding ->dirty framebuffer callback.
3665 *
3666 * Called by the user via ioctl.
3667 *
3668 * Returns:
3669 * Zero on success, negative errno on failure.
3670 */
3671int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
3672 void *data, struct drm_file *file_priv)
3673{
3674 struct drm_clip_rect __user *clips_ptr;
3675 struct drm_clip_rect *clips = NULL;
3676 struct drm_mode_fb_dirty_cmd *r = data;
3677 struct drm_framebuffer *fb;
3678 unsigned flags;
3679 int num_clips;
3680 int ret;
3681
3682 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3683 return -EINVAL;
3684
3685 fb = drm_framebuffer_lookup(dev, r->fb_id);
3686 if (!fb)
3687 return -ENOENT;
3688
3689 num_clips = r->num_clips;
3690 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
3691
3692 if (!num_clips != !clips_ptr) {
3693 ret = -EINVAL;
3694 goto out_err1;
3695 }
3696
3697 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
3698
3699 /* If userspace annotates copy, clips must come in pairs */
3700 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
3701 ret = -EINVAL;
3702 goto out_err1;
3703 }
3704
3705 if (num_clips && clips_ptr) {
3706 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
3707 ret = -EINVAL;
3708 goto out_err1;
3709 }
3710 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
3711 if (!clips) {
3712 ret = -ENOMEM;
3713 goto out_err1;
3714 }
3715
3716 ret = copy_from_user(clips, clips_ptr,
3717 num_clips * sizeof(*clips));
3718 if (ret) {
3719 ret = -EFAULT;
3720 goto out_err2;
3721 }
3722 }
3723
3724 if (fb->funcs->dirty) {
3725 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
3726 clips, num_clips);
3727 } else {
3728 ret = -ENOSYS;
3729 }
3730
3731out_err2:
3732 kfree(clips);
3733out_err1:
3734 drm_framebuffer_unreference(fb);
3735
3736 return ret;
3737}
3738
3739/**
3740 * drm_fb_release - remove and free the FBs on this file
3741 * @priv: drm file for the ioctl
3742 *
3743 * Destroy all the FBs associated with @filp.
3744 *
3745 * Called by the user via ioctl.
3746 *
3747 * Returns:
3748 * Zero on success, negative errno on failure.
3749 */
3750void drm_fb_release(struct drm_file *priv)
3751{
3752 struct drm_framebuffer *fb, *tfb;
3753 struct drm_mode_rmfb_work arg;
3754
3755 INIT_LIST_HEAD(&arg.fbs);
3756
3757 /*
3758 * When the file gets released that means no one else can access the fb
3759 * list any more, so no need to grab fpriv->fbs_lock. And we need to
3760 * avoid upsetting lockdep since the universal cursor code adds a
3761 * framebuffer while holding mutex locks.
3762 *
3763 * Note that a real deadlock between fpriv->fbs_lock and the modeset
3764 * locks is impossible here since no one else but this function can get
3765 * at it any more.
3766 */
3767 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
3768 if (drm_framebuffer_read_refcount(fb) > 1) {
3769 list_move_tail(&fb->filp_head, &arg.fbs);
3770 } else {
3771 list_del_init(&fb->filp_head);
3772
3773 /* This drops the fpriv->fbs reference. */
3774 drm_framebuffer_unreference(fb);
3775 }
3776 }
3777
3778 if (!list_empty(&arg.fbs)) {
3779 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
3780
3781 schedule_work(&arg.work);
3782 flush_work(&arg.work);
3783 destroy_work_on_stack(&arg.work);
3784 }
3785}
3786
3787static bool drm_property_type_valid(struct drm_property *property) 3015static bool drm_property_type_valid(struct drm_property *property)
3788{ 3016{
3789 if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) 3017 if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
@@ -4496,7 +3724,7 @@ struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
4496 struct drm_mode_object *obj; 3724 struct drm_mode_object *obj;
4497 struct drm_property_blob *blob = NULL; 3725 struct drm_property_blob *blob = NULL;
4498 3726
4499 obj = _object_find(dev, id, DRM_MODE_OBJECT_BLOB); 3727 obj = __drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
4500 if (obj) 3728 if (obj)
4501 blob = obj_to_blob(obj); 3729 blob = obj_to_blob(obj);
4502 return blob; 3730 return blob;
@@ -4892,7 +4120,8 @@ bool drm_property_change_valid_get(struct drm_property *property,
4892 if (value == 0) 4120 if (value == 0)
4893 return true; 4121 return true;
4894 4122
4895 *ref = _object_find(property->dev, value, property->values[0]); 4123 *ref = __drm_mode_object_find(property->dev, value,
4124 property->values[0]);
4896 return *ref != NULL; 4125 return *ref != NULL;
4897 } 4126 }
4898 4127
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index 0c34e6d906d1..67a7b4540630 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -35,8 +35,17 @@
35/* drm_crtc.c */ 35/* drm_crtc.c */
36void drm_connector_ida_init(void); 36void drm_connector_ida_init(void);
37void drm_connector_ida_destroy(void); 37void drm_connector_ida_destroy(void);
38int drm_mode_object_get_reg(struct drm_device *dev,
39 struct drm_mode_object *obj,
40 uint32_t obj_type,
41 bool register_obj,
42 void (*obj_free_cb)(struct kref *kref));
43void drm_mode_object_register(struct drm_device *dev,
44 struct drm_mode_object *obj);
38int drm_mode_object_get(struct drm_device *dev, 45int drm_mode_object_get(struct drm_device *dev,
39 struct drm_mode_object *obj, uint32_t obj_type); 46 struct drm_mode_object *obj, uint32_t obj_type);
47struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
48 uint32_t id, uint32_t type);
40void drm_mode_object_unregister(struct drm_device *dev, 49void drm_mode_object_unregister(struct drm_device *dev,
41 struct drm_mode_object *object); 50 struct drm_mode_object *object);
42bool drm_property_change_valid_get(struct drm_property *property, 51bool drm_property_change_valid_get(struct drm_property *property,
@@ -64,18 +73,6 @@ int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
64int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, 73int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
65 void *data, struct drm_file *file_priv); 74 void *data, struct drm_file *file_priv);
66 75
67/* framebuffer IOCTLs */
68extern int drm_mode_addfb(struct drm_device *dev,
69 void *data, struct drm_file *file_priv);
70extern int drm_mode_addfb2(struct drm_device *dev,
71 void *data, struct drm_file *file_priv);
72int drm_mode_rmfb(struct drm_device *dev,
73 void *data, struct drm_file *file_priv);
74int drm_mode_getfb(struct drm_device *dev,
75 void *data, struct drm_file *file_priv);
76int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
77 void *data, struct drm_file *file_priv);
78
79/* IOCTLs */ 76/* IOCTLs */
80int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, 77int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
81 struct drm_file *file_priv); 78 struct drm_file *file_priv);
@@ -120,6 +117,25 @@ int drm_mode_gamma_set_ioctl(struct drm_device *dev,
120int drm_mode_page_flip_ioctl(struct drm_device *dev, 117int drm_mode_page_flip_ioctl(struct drm_device *dev,
121 void *data, struct drm_file *file_priv); 118 void *data, struct drm_file *file_priv);
122 119
120/* drm_framebuffer.c */
121struct drm_framebuffer *
122drm_internal_framebuffer_create(struct drm_device *dev,
123 const struct drm_mode_fb_cmd2 *r,
124 struct drm_file *file_priv);
125void drm_framebuffer_free(struct kref *kref);
126
127/* IOCTL */
128int drm_mode_addfb(struct drm_device *dev,
129 void *data, struct drm_file *file_priv);
130int drm_mode_addfb2(struct drm_device *dev,
131 void *data, struct drm_file *file_priv);
132int drm_mode_rmfb(struct drm_device *dev,
133 void *data, struct drm_file *file_priv);
134int drm_mode_getfb(struct drm_device *dev,
135 void *data, struct drm_file *file_priv);
136int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
137 void *data, struct drm_file *file_priv);
138
123/* drm_atomic.c */ 139/* drm_atomic.c */
124int drm_atomic_get_property(struct drm_mode_object *obj, 140int drm_atomic_get_property(struct drm_mode_object *obj,
125 struct drm_property *property, uint64_t *val); 141 struct drm_property *property, uint64_t *val);
diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
new file mode 100644
index 000000000000..74572c8a50b8
--- /dev/null
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -0,0 +1,796 @@
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#include <linux/export.h>
24#include <drm/drmP.h>
25#include <drm/drm_auth.h>
26#include <drm/drm_framebuffer.h>
27
28#include "drm_crtc_internal.h"
29
30/**
31 * drm_mode_addfb - add an FB to the graphics configuration
32 * @dev: drm device for the ioctl
33 * @data: data pointer for the ioctl
34 * @file_priv: drm file for the ioctl call
35 *
36 * Add a new FB to the specified CRTC, given a user request. This is the
37 * original addfb ioctl which only supported RGB formats.
38 *
39 * Called by the user via ioctl.
40 *
41 * Returns:
42 * Zero on success, negative errno on failure.
43 */
44int drm_mode_addfb(struct drm_device *dev,
45 void *data, struct drm_file *file_priv)
46{
47 struct drm_mode_fb_cmd *or = data;
48 struct drm_mode_fb_cmd2 r = {};
49 int ret;
50
51 /* convert to new format and call new ioctl */
52 r.fb_id = or->fb_id;
53 r.width = or->width;
54 r.height = or->height;
55 r.pitches[0] = or->pitch;
56 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
57 r.handles[0] = or->handle;
58
59 ret = drm_mode_addfb2(dev, &r, file_priv);
60 if (ret)
61 return ret;
62
63 or->fb_id = r.fb_id;
64
65 return 0;
66}
67
68static int format_check(const struct drm_mode_fb_cmd2 *r)
69{
70 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
71 char *format_name;
72
73 switch (format) {
74 case DRM_FORMAT_C8:
75 case DRM_FORMAT_RGB332:
76 case DRM_FORMAT_BGR233:
77 case DRM_FORMAT_XRGB4444:
78 case DRM_FORMAT_XBGR4444:
79 case DRM_FORMAT_RGBX4444:
80 case DRM_FORMAT_BGRX4444:
81 case DRM_FORMAT_ARGB4444:
82 case DRM_FORMAT_ABGR4444:
83 case DRM_FORMAT_RGBA4444:
84 case DRM_FORMAT_BGRA4444:
85 case DRM_FORMAT_XRGB1555:
86 case DRM_FORMAT_XBGR1555:
87 case DRM_FORMAT_RGBX5551:
88 case DRM_FORMAT_BGRX5551:
89 case DRM_FORMAT_ARGB1555:
90 case DRM_FORMAT_ABGR1555:
91 case DRM_FORMAT_RGBA5551:
92 case DRM_FORMAT_BGRA5551:
93 case DRM_FORMAT_RGB565:
94 case DRM_FORMAT_BGR565:
95 case DRM_FORMAT_RGB888:
96 case DRM_FORMAT_BGR888:
97 case DRM_FORMAT_XRGB8888:
98 case DRM_FORMAT_XBGR8888:
99 case DRM_FORMAT_RGBX8888:
100 case DRM_FORMAT_BGRX8888:
101 case DRM_FORMAT_ARGB8888:
102 case DRM_FORMAT_ABGR8888:
103 case DRM_FORMAT_RGBA8888:
104 case DRM_FORMAT_BGRA8888:
105 case DRM_FORMAT_XRGB2101010:
106 case DRM_FORMAT_XBGR2101010:
107 case DRM_FORMAT_RGBX1010102:
108 case DRM_FORMAT_BGRX1010102:
109 case DRM_FORMAT_ARGB2101010:
110 case DRM_FORMAT_ABGR2101010:
111 case DRM_FORMAT_RGBA1010102:
112 case DRM_FORMAT_BGRA1010102:
113 case DRM_FORMAT_YUYV:
114 case DRM_FORMAT_YVYU:
115 case DRM_FORMAT_UYVY:
116 case DRM_FORMAT_VYUY:
117 case DRM_FORMAT_AYUV:
118 case DRM_FORMAT_NV12:
119 case DRM_FORMAT_NV21:
120 case DRM_FORMAT_NV16:
121 case DRM_FORMAT_NV61:
122 case DRM_FORMAT_NV24:
123 case DRM_FORMAT_NV42:
124 case DRM_FORMAT_YUV410:
125 case DRM_FORMAT_YVU410:
126 case DRM_FORMAT_YUV411:
127 case DRM_FORMAT_YVU411:
128 case DRM_FORMAT_YUV420:
129 case DRM_FORMAT_YVU420:
130 case DRM_FORMAT_YUV422:
131 case DRM_FORMAT_YVU422:
132 case DRM_FORMAT_YUV444:
133 case DRM_FORMAT_YVU444:
134 return 0;
135 default:
136 format_name = drm_get_format_name(r->pixel_format);
137 DRM_DEBUG_KMS("invalid pixel format %s\n", format_name);
138 kfree(format_name);
139 return -EINVAL;
140 }
141}
142
143static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
144{
145 int ret, hsub, vsub, num_planes, i;
146
147 ret = format_check(r);
148 if (ret) {
149 char *format_name = drm_get_format_name(r->pixel_format);
150 DRM_DEBUG_KMS("bad framebuffer format %s\n", format_name);
151 kfree(format_name);
152 return ret;
153 }
154
155 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
156 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
157 num_planes = drm_format_num_planes(r->pixel_format);
158
159 if (r->width == 0 || r->width % hsub) {
160 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
161 return -EINVAL;
162 }
163
164 if (r->height == 0 || r->height % vsub) {
165 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
166 return -EINVAL;
167 }
168
169 for (i = 0; i < num_planes; i++) {
170 unsigned int width = r->width / (i != 0 ? hsub : 1);
171 unsigned int height = r->height / (i != 0 ? vsub : 1);
172 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
173
174 if (!r->handles[i]) {
175 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
176 return -EINVAL;
177 }
178
179 if ((uint64_t) width * cpp > UINT_MAX)
180 return -ERANGE;
181
182 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
183 return -ERANGE;
184
185 if (r->pitches[i] < width * cpp) {
186 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
187 return -EINVAL;
188 }
189
190 if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
191 DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
192 r->modifier[i], i);
193 return -EINVAL;
194 }
195
196 /* modifier specific checks: */
197 switch (r->modifier[i]) {
198 case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
199 /* NOTE: the pitch restriction may be lifted later if it turns
200 * out that no hw has this restriction:
201 */
202 if (r->pixel_format != DRM_FORMAT_NV12 ||
203 width % 128 || height % 32 ||
204 r->pitches[i] % 128) {
205 DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
206 return -EINVAL;
207 }
208 break;
209
210 default:
211 break;
212 }
213 }
214
215 for (i = num_planes; i < 4; i++) {
216 if (r->modifier[i]) {
217 DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
218 return -EINVAL;
219 }
220
221 /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
222 if (!(r->flags & DRM_MODE_FB_MODIFIERS))
223 continue;
224
225 if (r->handles[i]) {
226 DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
227 return -EINVAL;
228 }
229
230 if (r->pitches[i]) {
231 DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
232 return -EINVAL;
233 }
234
235 if (r->offsets[i]) {
236 DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
237 return -EINVAL;
238 }
239 }
240
241 return 0;
242}
243
244struct drm_framebuffer *
245drm_internal_framebuffer_create(struct drm_device *dev,
246 const struct drm_mode_fb_cmd2 *r,
247 struct drm_file *file_priv)
248{
249 struct drm_mode_config *config = &dev->mode_config;
250 struct drm_framebuffer *fb;
251 int ret;
252
253 if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
254 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
255 return ERR_PTR(-EINVAL);
256 }
257
258 if ((config->min_width > r->width) || (r->width > config->max_width)) {
259 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
260 r->width, config->min_width, config->max_width);
261 return ERR_PTR(-EINVAL);
262 }
263 if ((config->min_height > r->height) || (r->height > config->max_height)) {
264 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
265 r->height, config->min_height, config->max_height);
266 return ERR_PTR(-EINVAL);
267 }
268
269 if (r->flags & DRM_MODE_FB_MODIFIERS &&
270 !dev->mode_config.allow_fb_modifiers) {
271 DRM_DEBUG_KMS("driver does not support fb modifiers\n");
272 return ERR_PTR(-EINVAL);
273 }
274
275 ret = framebuffer_check(r);
276 if (ret)
277 return ERR_PTR(ret);
278
279 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
280 if (IS_ERR(fb)) {
281 DRM_DEBUG_KMS("could not create framebuffer\n");
282 return fb;
283 }
284
285 return fb;
286}
287
288/**
289 * drm_mode_addfb2 - add an FB to the graphics configuration
290 * @dev: drm device for the ioctl
291 * @data: data pointer for the ioctl
292 * @file_priv: drm file for the ioctl call
293 *
294 * Add a new FB to the specified CRTC, given a user request with format. This is
295 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
296 * and uses fourcc codes as pixel format specifiers.
297 *
298 * Called by the user via ioctl.
299 *
300 * Returns:
301 * Zero on success, negative errno on failure.
302 */
303int drm_mode_addfb2(struct drm_device *dev,
304 void *data, struct drm_file *file_priv)
305{
306 struct drm_mode_fb_cmd2 *r = data;
307 struct drm_framebuffer *fb;
308
309 if (!drm_core_check_feature(dev, DRIVER_MODESET))
310 return -EINVAL;
311
312 fb = drm_internal_framebuffer_create(dev, r, file_priv);
313 if (IS_ERR(fb))
314 return PTR_ERR(fb);
315
316 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
317 r->fb_id = fb->base.id;
318
319 /* Transfer ownership to the filp for reaping on close */
320 mutex_lock(&file_priv->fbs_lock);
321 list_add(&fb->filp_head, &file_priv->fbs);
322 mutex_unlock(&file_priv->fbs_lock);
323
324 return 0;
325}
326
327struct drm_mode_rmfb_work {
328 struct work_struct work;
329 struct list_head fbs;
330};
331
332static void drm_mode_rmfb_work_fn(struct work_struct *w)
333{
334 struct drm_mode_rmfb_work *arg = container_of(w, typeof(*arg), work);
335
336 while (!list_empty(&arg->fbs)) {
337 struct drm_framebuffer *fb =
338 list_first_entry(&arg->fbs, typeof(*fb), filp_head);
339
340 list_del_init(&fb->filp_head);
341 drm_framebuffer_remove(fb);
342 }
343}
344
345/**
346 * drm_mode_rmfb - remove an FB from the configuration
347 * @dev: drm device for the ioctl
348 * @data: data pointer for the ioctl
349 * @file_priv: drm file for the ioctl call
350 *
351 * Remove the FB specified by the user.
352 *
353 * Called by the user via ioctl.
354 *
355 * Returns:
356 * Zero on success, negative errno on failure.
357 */
358int drm_mode_rmfb(struct drm_device *dev,
359 void *data, struct drm_file *file_priv)
360{
361 struct drm_framebuffer *fb = NULL;
362 struct drm_framebuffer *fbl = NULL;
363 uint32_t *id = data;
364 int found = 0;
365
366 if (!drm_core_check_feature(dev, DRIVER_MODESET))
367 return -EINVAL;
368
369 fb = drm_framebuffer_lookup(dev, *id);
370 if (!fb)
371 return -ENOENT;
372
373 mutex_lock(&file_priv->fbs_lock);
374 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
375 if (fb == fbl)
376 found = 1;
377 if (!found) {
378 mutex_unlock(&file_priv->fbs_lock);
379 goto fail_unref;
380 }
381
382 list_del_init(&fb->filp_head);
383 mutex_unlock(&file_priv->fbs_lock);
384
385 /* drop the reference we picked up in framebuffer lookup */
386 drm_framebuffer_unreference(fb);
387
388 /*
389 * we now own the reference that was stored in the fbs list
390 *
391 * drm_framebuffer_remove may fail with -EINTR on pending signals,
392 * so run this in a separate stack as there's no way to correctly
393 * handle this after the fb is already removed from the lookup table.
394 */
395 if (drm_framebuffer_read_refcount(fb) > 1) {
396 struct drm_mode_rmfb_work arg;
397
398 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
399 INIT_LIST_HEAD(&arg.fbs);
400 list_add_tail(&fb->filp_head, &arg.fbs);
401
402 schedule_work(&arg.work);
403 flush_work(&arg.work);
404 destroy_work_on_stack(&arg.work);
405 } else
406 drm_framebuffer_unreference(fb);
407
408 return 0;
409
410fail_unref:
411 drm_framebuffer_unreference(fb);
412 return -ENOENT;
413}
414
415/**
416 * drm_mode_getfb - get FB info
417 * @dev: drm device for the ioctl
418 * @data: data pointer for the ioctl
419 * @file_priv: drm file for the ioctl call
420 *
421 * Lookup the FB given its ID and return info about it.
422 *
423 * Called by the user via ioctl.
424 *
425 * Returns:
426 * Zero on success, negative errno on failure.
427 */
428int drm_mode_getfb(struct drm_device *dev,
429 void *data, struct drm_file *file_priv)
430{
431 struct drm_mode_fb_cmd *r = data;
432 struct drm_framebuffer *fb;
433 int ret;
434
435 if (!drm_core_check_feature(dev, DRIVER_MODESET))
436 return -EINVAL;
437
438 fb = drm_framebuffer_lookup(dev, r->fb_id);
439 if (!fb)
440 return -ENOENT;
441
442 r->height = fb->height;
443 r->width = fb->width;
444 r->depth = fb->depth;
445 r->bpp = fb->bits_per_pixel;
446 r->pitch = fb->pitches[0];
447 if (fb->funcs->create_handle) {
448 if (drm_is_current_master(file_priv) || capable(CAP_SYS_ADMIN) ||
449 drm_is_control_client(file_priv)) {
450 ret = fb->funcs->create_handle(fb, file_priv,
451 &r->handle);
452 } else {
453 /* GET_FB() is an unprivileged ioctl so we must not
454 * return a buffer-handle to non-master processes! For
455 * backwards-compatibility reasons, we cannot make
456 * GET_FB() privileged, so just return an invalid handle
457 * for non-masters. */
458 r->handle = 0;
459 ret = 0;
460 }
461 } else {
462 ret = -ENODEV;
463 }
464
465 drm_framebuffer_unreference(fb);
466
467 return ret;
468}
469
470/**
471 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
472 * @dev: drm device for the ioctl
473 * @data: data pointer for the ioctl
474 * @file_priv: drm file for the ioctl call
475 *
476 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
477 * rectangle list. Generic userspace which does frontbuffer rendering must call
478 * this ioctl to flush out the changes on manual-update display outputs, e.g.
479 * usb display-link, mipi manual update panels or edp panel self refresh modes.
480 *
481 * Modesetting drivers which always update the frontbuffer do not need to
482 * implement the corresponding ->dirty framebuffer callback.
483 *
484 * Called by the user via ioctl.
485 *
486 * Returns:
487 * Zero on success, negative errno on failure.
488 */
489int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
490 void *data, struct drm_file *file_priv)
491{
492 struct drm_clip_rect __user *clips_ptr;
493 struct drm_clip_rect *clips = NULL;
494 struct drm_mode_fb_dirty_cmd *r = data;
495 struct drm_framebuffer *fb;
496 unsigned flags;
497 int num_clips;
498 int ret;
499
500 if (!drm_core_check_feature(dev, DRIVER_MODESET))
501 return -EINVAL;
502
503 fb = drm_framebuffer_lookup(dev, r->fb_id);
504 if (!fb)
505 return -ENOENT;
506
507 num_clips = r->num_clips;
508 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
509
510 if (!num_clips != !clips_ptr) {
511 ret = -EINVAL;
512 goto out_err1;
513 }
514
515 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
516
517 /* If userspace annotates copy, clips must come in pairs */
518 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
519 ret = -EINVAL;
520 goto out_err1;
521 }
522
523 if (num_clips && clips_ptr) {
524 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
525 ret = -EINVAL;
526 goto out_err1;
527 }
528 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
529 if (!clips) {
530 ret = -ENOMEM;
531 goto out_err1;
532 }
533
534 ret = copy_from_user(clips, clips_ptr,
535 num_clips * sizeof(*clips));
536 if (ret) {
537 ret = -EFAULT;
538 goto out_err2;
539 }
540 }
541
542 if (fb->funcs->dirty) {
543 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
544 clips, num_clips);
545 } else {
546 ret = -ENOSYS;
547 }
548
549out_err2:
550 kfree(clips);
551out_err1:
552 drm_framebuffer_unreference(fb);
553
554 return ret;
555}
556
557/**
558 * drm_fb_release - remove and free the FBs on this file
559 * @priv: drm file for the ioctl
560 *
561 * Destroy all the FBs associated with @filp.
562 *
563 * Called by the user via ioctl.
564 *
565 * Returns:
566 * Zero on success, negative errno on failure.
567 */
568void drm_fb_release(struct drm_file *priv)
569{
570 struct drm_framebuffer *fb, *tfb;
571 struct drm_mode_rmfb_work arg;
572
573 INIT_LIST_HEAD(&arg.fbs);
574
575 /*
576 * When the file gets released that means no one else can access the fb
577 * list any more, so no need to grab fpriv->fbs_lock. And we need to
578 * avoid upsetting lockdep since the universal cursor code adds a
579 * framebuffer while holding mutex locks.
580 *
581 * Note that a real deadlock between fpriv->fbs_lock and the modeset
582 * locks is impossible here since no one else but this function can get
583 * at it any more.
584 */
585 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
586 if (drm_framebuffer_read_refcount(fb) > 1) {
587 list_move_tail(&fb->filp_head, &arg.fbs);
588 } else {
589 list_del_init(&fb->filp_head);
590
591 /* This drops the fpriv->fbs reference. */
592 drm_framebuffer_unreference(fb);
593 }
594 }
595
596 if (!list_empty(&arg.fbs)) {
597 INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
598
599 schedule_work(&arg.work);
600 flush_work(&arg.work);
601 destroy_work_on_stack(&arg.work);
602 }
603}
604
605void drm_framebuffer_free(struct kref *kref)
606{
607 struct drm_framebuffer *fb =
608 container_of(kref, struct drm_framebuffer, base.refcount);
609 struct drm_device *dev = fb->dev;
610
611 /*
612 * The lookup idr holds a weak reference, which has not necessarily been
613 * removed at this point. Check for that.
614 */
615 drm_mode_object_unregister(dev, &fb->base);
616
617 fb->funcs->destroy(fb);
618}
619
620/**
621 * drm_framebuffer_init - initialize a framebuffer
622 * @dev: DRM device
623 * @fb: framebuffer to be initialized
624 * @funcs: ... with these functions
625 *
626 * Allocates an ID for the framebuffer's parent mode object, sets its mode
627 * functions & device file and adds it to the master fd list.
628 *
629 * IMPORTANT:
630 * This functions publishes the fb and makes it available for concurrent access
631 * by other users. Which means by this point the fb _must_ be fully set up -
632 * since all the fb attributes are invariant over its lifetime, no further
633 * locking but only correct reference counting is required.
634 *
635 * Returns:
636 * Zero on success, error code on failure.
637 */
638int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
639 const struct drm_framebuffer_funcs *funcs)
640{
641 int ret;
642
643 INIT_LIST_HEAD(&fb->filp_head);
644 fb->dev = dev;
645 fb->funcs = funcs;
646
647 ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
648 false, drm_framebuffer_free);
649 if (ret)
650 goto out;
651
652 mutex_lock(&dev->mode_config.fb_lock);
653 dev->mode_config.num_fb++;
654 list_add(&fb->head, &dev->mode_config.fb_list);
655 mutex_unlock(&dev->mode_config.fb_lock);
656
657 drm_mode_object_register(dev, &fb->base);
658out:
659 return ret;
660}
661EXPORT_SYMBOL(drm_framebuffer_init);
662
663/**
664 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
665 * @dev: drm device
666 * @id: id of the fb object
667 *
668 * If successful, this grabs an additional reference to the framebuffer -
669 * callers need to make sure to eventually unreference the returned framebuffer
670 * again, using @drm_framebuffer_unreference.
671 */
672struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
673 uint32_t id)
674{
675 struct drm_mode_object *obj;
676 struct drm_framebuffer *fb = NULL;
677
678 obj = __drm_mode_object_find(dev, id, DRM_MODE_OBJECT_FB);
679 if (obj)
680 fb = obj_to_fb(obj);
681 return fb;
682}
683EXPORT_SYMBOL(drm_framebuffer_lookup);
684
685/**
686 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
687 * @fb: fb to unregister
688 *
689 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
690 * those used for fbdev. Note that the caller must hold a reference of it's own,
691 * i.e. the object may not be destroyed through this call (since it'll lead to a
692 * locking inversion).
693 */
694void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
695{
696 struct drm_device *dev;
697
698 if (!fb)
699 return;
700
701 dev = fb->dev;
702
703 /* Mark fb as reaped and drop idr ref. */
704 drm_mode_object_unregister(dev, &fb->base);
705}
706EXPORT_SYMBOL(drm_framebuffer_unregister_private);
707
708/**
709 * drm_framebuffer_cleanup - remove a framebuffer object
710 * @fb: framebuffer to remove
711 *
712 * Cleanup framebuffer. This function is intended to be used from the drivers
713 * ->destroy callback. It can also be used to clean up driver private
714 * framebuffers embedded into a larger structure.
715 *
716 * Note that this function does not remove the fb from active usuage - if it is
717 * still used anywhere, hilarity can ensue since userspace could call getfb on
718 * the id and get back -EINVAL. Obviously no concern at driver unload time.
719 *
720 * Also, the framebuffer will not be removed from the lookup idr - for
721 * user-created framebuffers this will happen in in the rmfb ioctl. For
722 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
723 * drm_framebuffer_unregister_private.
724 */
725void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
726{
727 struct drm_device *dev = fb->dev;
728
729 mutex_lock(&dev->mode_config.fb_lock);
730 list_del(&fb->head);
731 dev->mode_config.num_fb--;
732 mutex_unlock(&dev->mode_config.fb_lock);
733}
734EXPORT_SYMBOL(drm_framebuffer_cleanup);
735
736/**
737 * drm_framebuffer_remove - remove and unreference a framebuffer object
738 * @fb: framebuffer to remove
739 *
740 * Scans all the CRTCs and planes in @dev's mode_config. If they're
741 * using @fb, removes it, setting it to NULL. Then drops the reference to the
742 * passed-in framebuffer. Might take the modeset locks.
743 *
744 * Note that this function optimizes the cleanup away if the caller holds the
745 * last reference to the framebuffer. It is also guaranteed to not take the
746 * modeset locks in this case.
747 */
748void drm_framebuffer_remove(struct drm_framebuffer *fb)
749{
750 struct drm_device *dev;
751 struct drm_crtc *crtc;
752 struct drm_plane *plane;
753
754 if (!fb)
755 return;
756
757 dev = fb->dev;
758
759 WARN_ON(!list_empty(&fb->filp_head));
760
761 /*
762 * drm ABI mandates that we remove any deleted framebuffers from active
763 * useage. But since most sane clients only remove framebuffers they no
764 * longer need, try to optimize this away.
765 *
766 * Since we're holding a reference ourselves, observing a refcount of 1
767 * means that we're the last holder and can skip it. Also, the refcount
768 * can never increase from 1 again, so we don't need any barriers or
769 * locks.
770 *
771 * Note that userspace could try to race with use and instate a new
772 * usage _after_ we've cleared all current ones. End result will be an
773 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
774 * in this manner.
775 */
776 if (drm_framebuffer_read_refcount(fb) > 1) {
777 drm_modeset_lock_all(dev);
778 /* remove from any CRTC */
779 drm_for_each_crtc(crtc, dev) {
780 if (crtc->primary->fb == fb) {
781 /* should turn off the crtc */
782 if (drm_crtc_force_disable(crtc))
783 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
784 }
785 }
786
787 drm_for_each_plane(plane, dev) {
788 if (plane->fb == fb)
789 drm_plane_force_disable(plane);
790 }
791 drm_modeset_unlock_all(dev);
792 }
793
794 drm_framebuffer_unreference(fb);
795}
796EXPORT_SYMBOL(drm_framebuffer_remove);
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 5a7809f029ba..0119161cad57 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -36,10 +36,12 @@
36#include <uapi/drm/drm_fourcc.h> 36#include <uapi/drm/drm_fourcc.h>
37#include <drm/drm_modeset_lock.h> 37#include <drm/drm_modeset_lock.h>
38#include <drm/drm_rect.h> 38#include <drm/drm_rect.h>
39#include <drm/drm_modeset.h>
40#include <drm/drm_framebuffer.h>
41#include <drm/drm_modes.h>
39 42
40struct drm_device; 43struct drm_device;
41struct drm_mode_set; 44struct drm_mode_set;
42struct drm_framebuffer;
43struct drm_object_properties; 45struct drm_object_properties;
44struct drm_file; 46struct drm_file;
45struct drm_clip_rect; 47struct drm_clip_rect;
@@ -47,14 +49,6 @@ struct device_node;
47struct fence; 49struct fence;
48struct edid; 50struct edid;
49 51
50struct drm_mode_object {
51 uint32_t id;
52 uint32_t type;
53 struct drm_object_properties *properties;
54 struct kref refcount;
55 void (*free_cb)(struct kref *kref);
56};
57
58#define DRM_OBJECT_MAX_PROPERTY 24 52#define DRM_OBJECT_MAX_PROPERTY 24
59struct drm_object_properties { 53struct drm_object_properties {
60 int count, atomic_count; 54 int count, atomic_count;
@@ -94,15 +88,6 @@ static inline uint64_t I642U64(int64_t val)
94#define DRM_REFLECT_Y BIT(5) 88#define DRM_REFLECT_Y BIT(5)
95#define DRM_REFLECT_MASK (DRM_REFLECT_X | DRM_REFLECT_Y) 89#define DRM_REFLECT_MASK (DRM_REFLECT_X | DRM_REFLECT_Y)
96 90
97enum drm_connector_force {
98 DRM_FORCE_UNSPECIFIED,
99 DRM_FORCE_OFF,
100 DRM_FORCE_ON, /* force on analog part normally */
101 DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
102};
103
104#include <drm/drm_modes.h>
105
106enum drm_connector_status { 91enum drm_connector_status {
107 connector_status_connected = 1, 92 connector_status_connected = 1,
108 connector_status_disconnected = 2, 93 connector_status_disconnected = 2,
@@ -166,101 +151,6 @@ struct drm_tile_group {
166 u8 group_data[8]; 151 u8 group_data[8];
167}; 152};
168 153
169/**
170 * struct drm_framebuffer_funcs - framebuffer hooks
171 */
172struct drm_framebuffer_funcs {
173 /**
174 * @destroy:
175 *
176 * Clean up framebuffer resources, specifically also unreference the
177 * backing storage. The core guarantees to call this function for every
178 * framebuffer successfully created by ->fb_create() in
179 * &drm_mode_config_funcs. Drivers must also call
180 * drm_framebuffer_cleanup() to release DRM core resources for this
181 * framebuffer.
182 */
183 void (*destroy)(struct drm_framebuffer *framebuffer);
184
185 /**
186 * @create_handle:
187 *
188 * Create a buffer handle in the driver-specific buffer manager (either
189 * GEM or TTM) valid for the passed-in struct &drm_file. This is used by
190 * the core to implement the GETFB IOCTL, which returns (for
191 * sufficiently priviledged user) also a native buffer handle. This can
192 * be used for seamless transitions between modesetting clients by
193 * copying the current screen contents to a private buffer and blending
194 * between that and the new contents.
195 *
196 * GEM based drivers should call drm_gem_handle_create() to create the
197 * handle.
198 *
199 * RETURNS:
200 *
201 * 0 on success or a negative error code on failure.
202 */
203 int (*create_handle)(struct drm_framebuffer *fb,
204 struct drm_file *file_priv,
205 unsigned int *handle);
206 /**
207 * @dirty:
208 *
209 * Optional callback for the dirty fb IOCTL.
210 *
211 * Userspace can notify the driver via this callback that an area of the
212 * framebuffer has changed and should be flushed to the display
213 * hardware. This can also be used internally, e.g. by the fbdev
214 * emulation, though that's not the case currently.
215 *
216 * See documentation in drm_mode.h for the struct drm_mode_fb_dirty_cmd
217 * for more information as all the semantics and arguments have a one to
218 * one mapping on this function.
219 *
220 * RETURNS:
221 *
222 * 0 on success or a negative error code on failure.
223 */
224 int (*dirty)(struct drm_framebuffer *framebuffer,
225 struct drm_file *file_priv, unsigned flags,
226 unsigned color, struct drm_clip_rect *clips,
227 unsigned num_clips);
228};
229
230struct drm_framebuffer {
231 struct drm_device *dev;
232 /*
233 * Note that the fb is refcounted for the benefit of driver internals,
234 * for example some hw, disabling a CRTC/plane is asynchronous, and
235 * scanout does not actually complete until the next vblank. So some
236 * cleanup (like releasing the reference(s) on the backing GEM bo(s))
237 * should be deferred. In cases like this, the driver would like to
238 * hold a ref to the fb even though it has already been removed from
239 * userspace perspective.
240 * The refcount is stored inside the mode object.
241 */
242 /*
243 * Place on the dev->mode_config.fb_list, access protected by
244 * dev->mode_config.fb_lock.
245 */
246 struct list_head head;
247 struct drm_mode_object base;
248 const struct drm_framebuffer_funcs *funcs;
249 unsigned int pitches[4];
250 unsigned int offsets[4];
251 uint64_t modifier[4];
252 unsigned int width;
253 unsigned int height;
254 /* depth can be 15 or 16 */
255 unsigned int depth;
256 int bits_per_pixel;
257 int flags;
258 uint32_t pixel_format; /* fourcc format */
259 int hot_x;
260 int hot_y;
261 struct list_head filp_head;
262};
263
264struct drm_property_blob { 154struct drm_property_blob {
265 struct drm_mode_object base; 155 struct drm_mode_object base;
266 struct drm_device *dev; 156 struct drm_device *dev;
@@ -2888,14 +2778,6 @@ extern int drm_object_property_set_value(struct drm_mode_object *obj,
2888extern int drm_object_property_get_value(struct drm_mode_object *obj, 2778extern int drm_object_property_get_value(struct drm_mode_object *obj,
2889 struct drm_property *property, 2779 struct drm_property *property,
2890 uint64_t *value); 2780 uint64_t *value);
2891extern int drm_framebuffer_init(struct drm_device *dev,
2892 struct drm_framebuffer *fb,
2893 const struct drm_framebuffer_funcs *funcs);
2894extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
2895 uint32_t id);
2896extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
2897extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
2898extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
2899 2781
2900extern void drm_object_attach_property(struct drm_mode_object *obj, 2782extern void drm_object_attach_property(struct drm_mode_object *obj,
2901 struct drm_property *property, 2783 struct drm_property *property,
@@ -2976,11 +2858,6 @@ int drm_plane_create_zpos_immutable_property(struct drm_plane *plane,
2976 unsigned int zpos); 2858 unsigned int zpos);
2977 2859
2978/* Helpers */ 2860/* Helpers */
2979struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
2980 uint32_t id, uint32_t type);
2981void drm_mode_object_reference(struct drm_mode_object *obj);
2982void drm_mode_object_unreference(struct drm_mode_object *obj);
2983
2984static inline struct drm_plane *drm_plane_find(struct drm_device *dev, 2861static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
2985 uint32_t id) 2862 uint32_t id)
2986{ 2863{
@@ -3049,39 +2926,6 @@ static inline uint32_t drm_color_lut_extract(uint32_t user_input,
3049} 2926}
3050 2927
3051/** 2928/**
3052 * drm_framebuffer_reference - incr the fb refcnt
3053 * @fb: framebuffer
3054 *
3055 * This functions increments the fb's refcount.
3056 */
3057static inline void drm_framebuffer_reference(struct drm_framebuffer *fb)
3058{
3059 drm_mode_object_reference(&fb->base);
3060}
3061
3062/**
3063 * drm_framebuffer_unreference - unref a framebuffer
3064 * @fb: framebuffer to unref
3065 *
3066 * This functions decrements the fb's refcount and frees it if it drops to zero.
3067 */
3068static inline void drm_framebuffer_unreference(struct drm_framebuffer *fb)
3069{
3070 drm_mode_object_unreference(&fb->base);
3071}
3072
3073/**
3074 * drm_framebuffer_read_refcount - read the framebuffer reference count.
3075 * @fb: framebuffer
3076 *
3077 * This functions returns the framebuffer's reference count.
3078 */
3079static inline uint32_t drm_framebuffer_read_refcount(struct drm_framebuffer *fb)
3080{
3081 return atomic_read(&fb->base.refcount.refcount);
3082}
3083
3084/**
3085 * drm_connector_reference - incr the connector refcnt 2929 * drm_connector_reference - incr the connector refcnt
3086 * @connector: connector 2930 * @connector: connector
3087 * 2931 *
diff --git a/include/drm/drm_framebuffer.h b/include/drm/drm_framebuffer.h
new file mode 100644
index 000000000000..46abdace8fa5
--- /dev/null
+++ b/include/drm/drm_framebuffer.h
@@ -0,0 +1,170 @@
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_FRAMEBUFFER_H__
24#define __DRM_FRAMEBUFFER_H__
25
26#include <linux/list.h>
27#include <linux/ctype.h>
28#include <drm/drm_modeset.h>
29
30struct drm_framebuffer;
31struct drm_file;
32struct drm_device;
33
34/**
35 * struct drm_framebuffer_funcs - framebuffer hooks
36 */
37struct drm_framebuffer_funcs {
38 /**
39 * @destroy:
40 *
41 * Clean up framebuffer resources, specifically also unreference the
42 * backing storage. The core guarantees to call this function for every
43 * framebuffer successfully created by ->fb_create() in
44 * &drm_mode_config_funcs. Drivers must also call
45 * drm_framebuffer_cleanup() to release DRM core resources for this
46 * framebuffer.
47 */
48 void (*destroy)(struct drm_framebuffer *framebuffer);
49
50 /**
51 * @create_handle:
52 *
53 * Create a buffer handle in the driver-specific buffer manager (either
54 * GEM or TTM) valid for the passed-in struct &drm_file. This is used by
55 * the core to implement the GETFB IOCTL, which returns (for
56 * sufficiently priviledged user) also a native buffer handle. This can
57 * be used for seamless transitions between modesetting clients by
58 * copying the current screen contents to a private buffer and blending
59 * between that and the new contents.
60 *
61 * GEM based drivers should call drm_gem_handle_create() to create the
62 * handle.
63 *
64 * RETURNS:
65 *
66 * 0 on success or a negative error code on failure.
67 */
68 int (*create_handle)(struct drm_framebuffer *fb,
69 struct drm_file *file_priv,
70 unsigned int *handle);
71 /**
72 * @dirty:
73 *
74 * Optional callback for the dirty fb IOCTL.
75 *
76 * Userspace can notify the driver via this callback that an area of the
77 * framebuffer has changed and should be flushed to the display
78 * hardware. This can also be used internally, e.g. by the fbdev
79 * emulation, though that's not the case currently.
80 *
81 * See documentation in drm_mode.h for the struct drm_mode_fb_dirty_cmd
82 * for more information as all the semantics and arguments have a one to
83 * one mapping on this function.
84 *
85 * RETURNS:
86 *
87 * 0 on success or a negative error code on failure.
88 */
89 int (*dirty)(struct drm_framebuffer *framebuffer,
90 struct drm_file *file_priv, unsigned flags,
91 unsigned color, struct drm_clip_rect *clips,
92 unsigned num_clips);
93};
94
95struct drm_framebuffer {
96 struct drm_device *dev;
97 /*
98 * Note that the fb is refcounted for the benefit of driver internals,
99 * for example some hw, disabling a CRTC/plane is asynchronous, and
100 * scanout does not actually complete until the next vblank. So some
101 * cleanup (like releasing the reference(s) on the backing GEM bo(s))
102 * should be deferred. In cases like this, the driver would like to
103 * hold a ref to the fb even though it has already been removed from
104 * userspace perspective.
105 * The refcount is stored inside the mode object.
106 */
107 /*
108 * Place on the dev->mode_config.fb_list, access protected by
109 * dev->mode_config.fb_lock.
110 */
111 struct list_head head;
112 struct drm_mode_object base;
113 const struct drm_framebuffer_funcs *funcs;
114 unsigned int pitches[4];
115 unsigned int offsets[4];
116 uint64_t modifier[4];
117 unsigned int width;
118 unsigned int height;
119 /* depth can be 15 or 16 */
120 unsigned int depth;
121 int bits_per_pixel;
122 int flags;
123 uint32_t pixel_format; /* fourcc format */
124 int hot_x;
125 int hot_y;
126 struct list_head filp_head;
127};
128
129int drm_framebuffer_init(struct drm_device *dev,
130 struct drm_framebuffer *fb,
131 const struct drm_framebuffer_funcs *funcs);
132struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
133 uint32_t id);
134void drm_framebuffer_remove(struct drm_framebuffer *fb);
135void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
136void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
137
138/**
139 * drm_framebuffer_reference - incr the fb refcnt
140 * @fb: framebuffer
141 *
142 * This functions increments the fb's refcount.
143 */
144static inline void drm_framebuffer_reference(struct drm_framebuffer *fb)
145{
146 drm_mode_object_reference(&fb->base);
147}
148
149/**
150 * drm_framebuffer_unreference - unref a framebuffer
151 * @fb: framebuffer to unref
152 *
153 * This functions decrements the fb's refcount and frees it if it drops to zero.
154 */
155static inline void drm_framebuffer_unreference(struct drm_framebuffer *fb)
156{
157 drm_mode_object_unreference(&fb->base);
158}
159
160/**
161 * drm_framebuffer_read_refcount - read the framebuffer reference count.
162 * @fb: framebuffer
163 *
164 * This functions returns the framebuffer's reference count.
165 */
166static inline uint32_t drm_framebuffer_read_refcount(struct drm_framebuffer *fb)
167{
168 return atomic_read(&fb->base.refcount.refcount);
169}
170#endif
diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
index 48e1a56ea283..fed9fe81590c 100644
--- a/include/drm/drm_modes.h
+++ b/include/drm/drm_modes.h
@@ -27,6 +27,8 @@
27#ifndef __DRM_MODES_H__ 27#ifndef __DRM_MODES_H__
28#define __DRM_MODES_H__ 28#define __DRM_MODES_H__
29 29
30#include <drm/drm_modeset.h>
31
30/* 32/*
31 * Note on terminology: here, for brevity and convenience, we refer to connector 33 * Note on terminology: here, for brevity and convenience, we refer to connector
32 * control chips as 'CRTCs'. They can control any type of connector, VGA, LVDS, 34 * control chips as 'CRTCs'. They can control any type of connector, VGA, LVDS,
diff --git a/include/drm/drm_modeset.h b/include/drm/drm_modeset.h
new file mode 100644
index 000000000000..0c2b0f3c5f34
--- /dev/null
+++ b/include/drm/drm_modeset.h
@@ -0,0 +1,50 @@
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_MODESET_H__
24#define __DRM_MODESET_H__
25
26#include <linux/kref.h>
27struct drm_object_properties;
28
29struct drm_mode_object {
30 uint32_t id;
31 uint32_t type;
32 struct drm_object_properties *properties;
33 struct kref refcount;
34 void (*free_cb)(struct kref *kref);
35};
36
37struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
38 uint32_t id, uint32_t type);
39void drm_mode_object_reference(struct drm_mode_object *obj);
40void drm_mode_object_unreference(struct drm_mode_object *obj);
41
42/* FIXME: This is temporary until we have a drm_connector.h */
43enum drm_connector_force {
44 DRM_FORCE_UNSPECIFIED,
45 DRM_FORCE_OFF,
46 DRM_FORCE_ON, /* force on analog part normally */
47 DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
48};
49
50#endif
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-12 18:26:55 -0400