123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437 |
- /*
- * Copyright (C) 2014 Red Hat
- * Copyright (C) 2014 Intel Corp.
- * Copyright (C) 2018 Intel Corp.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors:
- * Rob Clark <robdclark@gmail.com>
- * Daniel Vetter <daniel.vetter@ffwll.ch>
- */
- #include <drm/drm_atomic_uapi.h>
- #include <drm/drm_atomic.h>
- #include <drm/drm_print.h>
- #include <drm/drm_drv.h>
- #include <drm/drm_writeback.h>
- #include <drm/drm_vblank.h>
- #include <linux/dma-fence.h>
- #include <linux/uaccess.h>
- #include <linux/sync_file.h>
- #include <linux/file.h>
- #include "drm_crtc_internal.h"
- /**
- * DOC: overview
- *
- * This file contains the marshalling and demarshalling glue for the atomic UAPI
- * in all its forms: The monster ATOMIC IOCTL itself, code for GET_PROPERTY and
- * SET_PROPERTY IOCTLs. Plus interface functions for compatibility helpers and
- * drivers which have special needs to construct their own atomic updates, e.g.
- * for load detect or similiar.
- */
- /**
- * drm_atomic_set_mode_for_crtc - set mode for CRTC
- * @state: the CRTC whose incoming state to update
- * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
- *
- * Set a mode (originating from the kernel) on the desired CRTC state and update
- * the enable property.
- *
- * RETURNS:
- * Zero on success, error code on failure. Cannot return -EDEADLK.
- */
- int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
- const struct drm_display_mode *mode)
- {
- struct drm_crtc *crtc = state->crtc;
- struct drm_mode_modeinfo umode;
- /* Early return for no change. */
- if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
- return 0;
- drm_property_blob_put(state->mode_blob);
- state->mode_blob = NULL;
- if (mode) {
- drm_mode_convert_to_umode(&umode, mode);
- state->mode_blob =
- drm_property_create_blob(state->crtc->dev,
- sizeof(umode),
- &umode);
- if (IS_ERR(state->mode_blob))
- return PTR_ERR(state->mode_blob);
- drm_mode_copy(&state->mode, mode);
- state->enable = true;
- DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
- mode->name, crtc->base.id, crtc->name, state);
- } else {
- memset(&state->mode, 0, sizeof(state->mode));
- state->enable = false;
- DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
- crtc->base.id, crtc->name, state);
- }
- return 0;
- }
- EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
- /**
- * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
- * @state: the CRTC whose incoming state to update
- * @blob: pointer to blob property to use for mode
- *
- * Set a mode (originating from a blob property) on the desired CRTC state.
- * This function will take a reference on the blob property for the CRTC state,
- * and release the reference held on the state's existing mode property, if any
- * was set.
- *
- * RETURNS:
- * Zero on success, error code on failure. Cannot return -EDEADLK.
- */
- int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
- struct drm_property_blob *blob)
- {
- struct drm_crtc *crtc = state->crtc;
- if (blob == state->mode_blob)
- return 0;
- drm_property_blob_put(state->mode_blob);
- state->mode_blob = NULL;
- memset(&state->mode, 0, sizeof(state->mode));
- if (blob) {
- int ret;
- if (blob->length != sizeof(struct drm_mode_modeinfo)) {
- DRM_DEBUG_ATOMIC("[CRTC:%d:%s] bad mode blob length: %zu\n",
- crtc->base.id, crtc->name,
- blob->length);
- return -EINVAL;
- }
- ret = drm_mode_convert_umode(crtc->dev,
- &state->mode, blob->data);
- if (ret) {
- DRM_DEBUG_ATOMIC("[CRTC:%d:%s] invalid mode (ret=%d, status=%s):\n",
- crtc->base.id, crtc->name,
- ret, drm_get_mode_status_name(state->mode.status));
- drm_mode_debug_printmodeline(&state->mode);
- return -EINVAL;
- }
- state->mode_blob = drm_property_blob_get(blob);
- state->enable = true;
- DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
- state->mode.name, crtc->base.id, crtc->name,
- state);
- } else {
- state->enable = false;
- DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
- crtc->base.id, crtc->name, state);
- }
- return 0;
- }
- EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc);
- /**
- * drm_atomic_set_crtc_for_plane - set CRTC for plane
- * @plane_state: the plane whose incoming state to update
- * @crtc: CRTC to use for the plane
- *
- * Changing the assigned CRTC for a plane requires us to grab the lock and state
- * for the new CRTC, as needed. This function takes care of all these details
- * besides updating the pointer in the state object itself.
- *
- * Returns:
- * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
- * then the w/w mutex code has detected a deadlock and the entire atomic
- * sequence must be restarted. All other errors are fatal.
- */
- int
- drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
- struct drm_crtc *crtc)
- {
- struct drm_plane *plane = plane_state->plane;
- struct drm_crtc_state *crtc_state;
- /* Nothing to do for same crtc*/
- if (plane_state->crtc == crtc)
- return 0;
- if (plane_state->crtc) {
- crtc_state = drm_atomic_get_crtc_state(plane_state->state,
- plane_state->crtc);
- if (WARN_ON(IS_ERR(crtc_state)))
- return PTR_ERR(crtc_state);
- crtc_state->plane_mask &= ~drm_plane_mask(plane);
- }
- plane_state->crtc = crtc;
- if (crtc) {
- crtc_state = drm_atomic_get_crtc_state(plane_state->state,
- crtc);
- if (IS_ERR(crtc_state))
- return PTR_ERR(crtc_state);
- crtc_state->plane_mask |= drm_plane_mask(plane);
- }
- if (crtc)
- DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [CRTC:%d:%s]\n",
- plane->base.id, plane->name, plane_state,
- crtc->base.id, crtc->name);
- else
- DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [NOCRTC]\n",
- plane->base.id, plane->name, plane_state);
- return 0;
- }
- EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
- /**
- * drm_atomic_set_fb_for_plane - set framebuffer for plane
- * @plane_state: atomic state object for the plane
- * @fb: fb to use for the plane
- *
- * Changing the assigned framebuffer for a plane requires us to grab a reference
- * to the new fb and drop the reference to the old fb, if there is one. This
- * function takes care of all these details besides updating the pointer in the
- * state object itself.
- */
- void
- drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
- struct drm_framebuffer *fb)
- {
- struct drm_plane *plane = plane_state->plane;
- if (fb)
- DRM_DEBUG_ATOMIC("Set [FB:%d] for [PLANE:%d:%s] state %p\n",
- fb->base.id, plane->base.id, plane->name,
- plane_state);
- else
- DRM_DEBUG_ATOMIC("Set [NOFB] for [PLANE:%d:%s] state %p\n",
- plane->base.id, plane->name, plane_state);
- drm_framebuffer_assign(&plane_state->fb, fb);
- }
- EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
- /**
- * drm_atomic_set_fence_for_plane - set fence for plane
- * @plane_state: atomic state object for the plane
- * @fence: dma_fence to use for the plane
- *
- * Helper to setup the plane_state fence in case it is not set yet.
- * By using this drivers doesn't need to worry if the user choose
- * implicit or explicit fencing.
- *
- * This function will not set the fence to the state if it was set
- * via explicit fencing interfaces on the atomic ioctl. In that case it will
- * drop the reference to the fence as we are not storing it anywhere.
- * Otherwise, if &drm_plane_state.fence is not set this function we just set it
- * with the received implicit fence. In both cases this function consumes a
- * reference for @fence.
- *
- * This way explicit fencing can be used to overrule implicit fencing, which is
- * important to make explicit fencing use-cases work: One example is using one
- * buffer for 2 screens with different refresh rates. Implicit fencing will
- * clamp rendering to the refresh rate of the slower screen, whereas explicit
- * fence allows 2 independent render and display loops on a single buffer. If a
- * driver allows obeys both implicit and explicit fences for plane updates, then
- * it will break all the benefits of explicit fencing.
- */
- void
- drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
- struct dma_fence *fence)
- {
- if (plane_state->fence) {
- dma_fence_put(fence);
- return;
- }
- plane_state->fence = fence;
- }
- EXPORT_SYMBOL(drm_atomic_set_fence_for_plane);
- /**
- * drm_atomic_set_crtc_for_connector - set CRTC for connector
- * @conn_state: atomic state object for the connector
- * @crtc: CRTC to use for the connector
- *
- * Changing the assigned CRTC for a connector requires us to grab the lock and
- * state for the new CRTC, as needed. This function takes care of all these
- * details besides updating the pointer in the state object itself.
- *
- * Returns:
- * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
- * then the w/w mutex code has detected a deadlock and the entire atomic
- * sequence must be restarted. All other errors are fatal.
- */
- int
- drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
- struct drm_crtc *crtc)
- {
- struct drm_connector *connector = conn_state->connector;
- struct drm_crtc_state *crtc_state;
- if (conn_state->crtc == crtc)
- return 0;
- if (conn_state->crtc) {
- crtc_state = drm_atomic_get_new_crtc_state(conn_state->state,
- conn_state->crtc);
- crtc_state->connector_mask &=
- ~drm_connector_mask(conn_state->connector);
- drm_connector_put(conn_state->connector);
- conn_state->crtc = NULL;
- }
- if (crtc) {
- crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
- if (IS_ERR(crtc_state))
- return PTR_ERR(crtc_state);
- crtc_state->connector_mask |=
- drm_connector_mask(conn_state->connector);
- drm_connector_get(conn_state->connector);
- conn_state->crtc = crtc;
- DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [CRTC:%d:%s]\n",
- connector->base.id, connector->name,
- conn_state, crtc->base.id, crtc->name);
- } else {
- DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n",
- connector->base.id, connector->name,
- conn_state);
- }
- return 0;
- }
- EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
- static void set_out_fence_for_crtc(struct drm_atomic_state *state,
- struct drm_crtc *crtc, s32 __user *fence_ptr)
- {
- state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr;
- }
- static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
- struct drm_crtc *crtc)
- {
- s32 __user *fence_ptr;
- fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr;
- state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL;
- return fence_ptr;
- }
- static int set_out_fence_for_connector(struct drm_atomic_state *state,
- struct drm_connector *connector,
- s32 __user *fence_ptr)
- {
- unsigned int index = drm_connector_index(connector);
- if (!fence_ptr)
- return 0;
- if (put_user(-1, fence_ptr))
- return -EFAULT;
- state->connectors[index].out_fence_ptr = fence_ptr;
- return 0;
- }
- static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state,
- struct drm_connector *connector)
- {
- unsigned int index = drm_connector_index(connector);
- s32 __user *fence_ptr;
- fence_ptr = state->connectors[index].out_fence_ptr;
- state->connectors[index].out_fence_ptr = NULL;
- return fence_ptr;
- }
- static int
- drm_atomic_replace_property_blob_from_id(struct drm_device *dev,
- struct drm_property_blob **blob,
- uint64_t blob_id,
- ssize_t expected_size,
- ssize_t expected_elem_size,
- bool *replaced)
- {
- struct drm_property_blob *new_blob = NULL;
- if (blob_id != 0) {
- new_blob = drm_property_lookup_blob(dev, blob_id);
- if (new_blob == NULL)
- return -EINVAL;
- if (expected_size > 0 &&
- new_blob->length != expected_size) {
- drm_property_blob_put(new_blob);
- return -EINVAL;
- }
- if (expected_elem_size > 0 &&
- new_blob->length % expected_elem_size != 0) {
- drm_property_blob_put(new_blob);
- return -EINVAL;
- }
- }
- *replaced |= drm_property_replace_blob(blob, new_blob);
- drm_property_blob_put(new_blob);
- return 0;
- }
- static int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
- struct drm_crtc_state *state, struct drm_property *property,
- uint64_t val)
- {
- struct drm_device *dev = crtc->dev;
- struct drm_mode_config *config = &dev->mode_config;
- bool replaced = false;
- int ret;
- if (property == config->prop_active)
- state->active = val;
- else if (property == config->prop_mode_id) {
- struct drm_property_blob *mode =
- drm_property_lookup_blob(dev, val);
- ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
- drm_property_blob_put(mode);
- return ret;
- } else if (property == config->prop_vrr_enabled) {
- state->vrr_enabled = val;
- } else if (property == config->degamma_lut_property) {
- ret = drm_atomic_replace_property_blob_from_id(dev,
- &state->degamma_lut,
- val,
- -1, sizeof(struct drm_color_lut),
- &replaced);
- state->color_mgmt_changed |= replaced;
- return ret;
- } else if (property == config->ctm_property) {
- ret = drm_atomic_replace_property_blob_from_id(dev,
- &state->ctm,
- val,
- sizeof(struct drm_color_ctm), -1,
- &replaced);
- state->color_mgmt_changed |= replaced;
- return ret;
- } else if (property == config->gamma_lut_property) {
- ret = drm_atomic_replace_property_blob_from_id(dev,
- &state->gamma_lut,
- val,
- -1, sizeof(struct drm_color_lut),
- &replaced);
- state->color_mgmt_changed |= replaced;
- return ret;
- } else if (property == config->prop_out_fence_ptr) {
- s32 __user *fence_ptr = u64_to_user_ptr(val);
- if (!fence_ptr)
- return 0;
- if (put_user(-1, fence_ptr))
- return -EFAULT;
- set_out_fence_for_crtc(state->state, crtc, fence_ptr);
- } else if (crtc->funcs->atomic_set_property) {
- return crtc->funcs->atomic_set_property(crtc, state, property, val);
- } else {
- DRM_DEBUG_ATOMIC("[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n",
- crtc->base.id, crtc->name,
- property->base.id, property->name);
- return -EINVAL;
- }
- return 0;
- }
- static int
- drm_atomic_crtc_get_property(struct drm_crtc *crtc,
- const struct drm_crtc_state *state,
- struct drm_property *property, uint64_t *val)
- {
- struct drm_device *dev = crtc->dev;
- struct drm_mode_config *config = &dev->mode_config;
- if (property == config->prop_active)
- *val = drm_atomic_crtc_effectively_active(state);
- else if (property == config->prop_mode_id)
- *val = (state->mode_blob) ? state->mode_blob->base.id : 0;
- else if (property == config->prop_vrr_enabled)
- *val = state->vrr_enabled;
- else if (property == config->degamma_lut_property)
- *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0;
- else if (property == config->ctm_property)
- *val = (state->ctm) ? state->ctm->base.id : 0;
- else if (property == config->gamma_lut_property)
- *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0;
- else if (property == config->prop_out_fence_ptr)
- *val = 0;
- else if (crtc->funcs->atomic_get_property)
- return crtc->funcs->atomic_get_property(crtc, state, property, val);
- else
- return -EINVAL;
- return 0;
- }
- static int drm_atomic_plane_set_property(struct drm_plane *plane,
- struct drm_plane_state *state, struct drm_file *file_priv,
- struct drm_property *property, uint64_t val)
- {
- struct drm_device *dev = plane->dev;
- struct drm_mode_config *config = &dev->mode_config;
- bool replaced = false;
- int ret;
- if (property == config->prop_fb_id) {
- struct drm_framebuffer *fb;
- fb = drm_framebuffer_lookup(dev, file_priv, val);
- drm_atomic_set_fb_for_plane(state, fb);
- if (fb)
- drm_framebuffer_put(fb);
- } else if (property == config->prop_in_fence_fd) {
- if (state->fence)
- return -EINVAL;
- if (U642I64(val) == -1)
- return 0;
- state->fence = sync_file_get_fence(val);
- if (!state->fence)
- return -EINVAL;
- } else if (property == config->prop_crtc_id) {
- struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val);
- if (val && !crtc)
- return -EACCES;
- return drm_atomic_set_crtc_for_plane(state, crtc);
- } else if (property == config->prop_crtc_x) {
- state->crtc_x = U642I64(val);
- } else if (property == config->prop_crtc_y) {
- state->crtc_y = U642I64(val);
- } else if (property == config->prop_crtc_w) {
- state->crtc_w = val;
- } else if (property == config->prop_crtc_h) {
- state->crtc_h = val;
- } else if (property == config->prop_src_x) {
- state->src_x = val;
- } else if (property == config->prop_src_y) {
- state->src_y = val;
- } else if (property == config->prop_src_w) {
- state->src_w = val;
- } else if (property == config->prop_src_h) {
- state->src_h = val;
- } else if (property == plane->alpha_property) {
- state->alpha = val;
- } else if (property == plane->blend_mode_property) {
- state->pixel_blend_mode = val;
- } else if (property == plane->rotation_property) {
- if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) {
- DRM_DEBUG_ATOMIC("[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n",
- plane->base.id, plane->name, val);
- return -EINVAL;
- }
- state->rotation = val;
- } else if (property == plane->zpos_property) {
- state->zpos = val;
- } else if (property == plane->color_encoding_property) {
- state->color_encoding = val;
- } else if (property == plane->color_range_property) {
- state->color_range = val;
- } else if (property == config->prop_fb_damage_clips) {
- ret = drm_atomic_replace_property_blob_from_id(dev,
- &state->fb_damage_clips,
- val,
- -1,
- sizeof(struct drm_rect),
- &replaced);
- return ret;
- } else if (plane->funcs->atomic_set_property) {
- return plane->funcs->atomic_set_property(plane, state,
- property, val);
- } else {
- DRM_DEBUG_ATOMIC("[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
- plane->base.id, plane->name,
- property->base.id, property->name);
- return -EINVAL;
- }
- return 0;
- }
- static int
- drm_atomic_plane_get_property(struct drm_plane *plane,
- const struct drm_plane_state *state,
- struct drm_property *property, uint64_t *val)
- {
- struct drm_device *dev = plane->dev;
- struct drm_mode_config *config = &dev->mode_config;
- if (property == config->prop_fb_id) {
- *val = (state->fb) ? state->fb->base.id : 0;
- } else if (property == config->prop_in_fence_fd) {
- *val = -1;
- } else if (property == config->prop_crtc_id) {
- *val = (state->crtc) ? state->crtc->base.id : 0;
- } else if (property == config->prop_crtc_x) {
- *val = I642U64(state->crtc_x);
- } else if (property == config->prop_crtc_y) {
- *val = I642U64(state->crtc_y);
- } else if (property == config->prop_crtc_w) {
- *val = state->crtc_w;
- } else if (property == config->prop_crtc_h) {
- *val = state->crtc_h;
- } else if (property == config->prop_src_x) {
- *val = state->src_x;
- } else if (property == config->prop_src_y) {
- *val = state->src_y;
- } else if (property == config->prop_src_w) {
- *val = state->src_w;
- } else if (property == config->prop_src_h) {
- *val = state->src_h;
- } else if (property == plane->alpha_property) {
- *val = state->alpha;
- } else if (property == plane->blend_mode_property) {
- *val = state->pixel_blend_mode;
- } else if (property == plane->rotation_property) {
- *val = state->rotation;
- } else if (property == plane->zpos_property) {
- *val = state->zpos;
- } else if (property == plane->color_encoding_property) {
- *val = state->color_encoding;
- } else if (property == plane->color_range_property) {
- *val = state->color_range;
- } else if (property == config->prop_fb_damage_clips) {
- *val = (state->fb_damage_clips) ?
- state->fb_damage_clips->base.id : 0;
- } else if (plane->funcs->atomic_get_property) {
- return plane->funcs->atomic_get_property(plane, state, property, val);
- } else {
- return -EINVAL;
- }
- return 0;
- }
- static int drm_atomic_set_writeback_fb_for_connector(
- struct drm_connector_state *conn_state,
- struct drm_framebuffer *fb)
- {
- int ret;
- ret = drm_writeback_set_fb(conn_state, fb);
- if (ret < 0)
- return ret;
- if (fb)
- DRM_DEBUG_ATOMIC("Set [FB:%d] for connector state %p\n",
- fb->base.id, conn_state);
- else
- DRM_DEBUG_ATOMIC("Set [NOFB] for connector state %p\n",
- conn_state);
- return 0;
- }
- static int drm_atomic_connector_set_property(struct drm_connector *connector,
- struct drm_connector_state *state, struct drm_file *file_priv,
- struct drm_property *property, uint64_t val)
- {
- struct drm_device *dev = connector->dev;
- struct drm_mode_config *config = &dev->mode_config;
- bool replaced = false;
- int ret;
- if (property == config->prop_crtc_id) {
- struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val);
- if (val && !crtc)
- return -EACCES;
- return drm_atomic_set_crtc_for_connector(state, crtc);
- } else if (property == config->dpms_property) {
- /* setting DPMS property requires special handling, which
- * is done in legacy setprop path for us. Disallow (for
- * now?) atomic writes to DPMS property:
- */
- return -EINVAL;
- } else if (property == config->tv_select_subconnector_property) {
- state->tv.subconnector = val;
- } else if (property == config->tv_left_margin_property) {
- state->tv.margins.left = val;
- } else if (property == config->tv_right_margin_property) {
- state->tv.margins.right = val;
- } else if (property == config->tv_top_margin_property) {
- state->tv.margins.top = val;
- } else if (property == config->tv_bottom_margin_property) {
- state->tv.margins.bottom = val;
- } else if (property == config->tv_mode_property) {
- state->tv.mode = val;
- } else if (property == config->tv_brightness_property) {
- state->tv.brightness = val;
- } else if (property == config->tv_contrast_property) {
- state->tv.contrast = val;
- } else if (property == config->tv_flicker_reduction_property) {
- state->tv.flicker_reduction = val;
- } else if (property == config->tv_overscan_property) {
- state->tv.overscan = val;
- } else if (property == config->tv_saturation_property) {
- state->tv.saturation = val;
- } else if (property == config->tv_hue_property) {
- state->tv.hue = val;
- } else if (property == config->link_status_property) {
- /* Never downgrade from GOOD to BAD on userspace's request here,
- * only hw issues can do that.
- *
- * For an atomic property the userspace doesn't need to be able
- * to understand all the properties, but needs to be able to
- * restore the state it wants on VT switch. So if the userspace
- * tries to change the link_status from GOOD to BAD, driver
- * silently rejects it and returns a 0. This prevents userspace
- * from accidently breaking the display when it restores the
- * state.
- */
- if (state->link_status != DRM_LINK_STATUS_GOOD)
- state->link_status = val;
- } else if (property == config->hdr_output_metadata_property) {
- ret = drm_atomic_replace_property_blob_from_id(dev,
- &state->hdr_output_metadata,
- val,
- sizeof(struct hdr_output_metadata), -1,
- &replaced);
- return ret;
- } else if (property == config->aspect_ratio_property) {
- state->picture_aspect_ratio = val;
- } else if (property == config->content_type_property) {
- state->content_type = val;
- } else if (property == connector->scaling_mode_property) {
- state->scaling_mode = val;
- } else if (property == config->content_protection_property) {
- if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
- DRM_DEBUG_KMS("only drivers can set CP Enabled\n");
- return -EINVAL;
- }
- state->content_protection = val;
- } else if (property == config->hdcp_content_type_property) {
- state->hdcp_content_type = val;
- } else if (property == connector->colorspace_property) {
- state->colorspace = val;
- } else if (property == config->writeback_fb_id_property) {
- struct drm_framebuffer *fb;
- int ret;
- fb = drm_framebuffer_lookup(dev, file_priv, val);
- ret = drm_atomic_set_writeback_fb_for_connector(state, fb);
- if (fb)
- drm_framebuffer_put(fb);
- return ret;
- } else if (property == config->writeback_out_fence_ptr_property) {
- s32 __user *fence_ptr = u64_to_user_ptr(val);
- return set_out_fence_for_connector(state->state, connector,
- fence_ptr);
- } else if (property == connector->max_bpc_property) {
- state->max_requested_bpc = val;
- } else if (connector->funcs->atomic_set_property) {
- return connector->funcs->atomic_set_property(connector,
- state, property, val);
- } else {
- DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n",
- connector->base.id, connector->name,
- property->base.id, property->name);
- return -EINVAL;
- }
- return 0;
- }
- static int
- drm_atomic_connector_get_property(struct drm_connector *connector,
- const struct drm_connector_state *state,
- struct drm_property *property, uint64_t *val)
- {
- struct drm_device *dev = connector->dev;
- struct drm_mode_config *config = &dev->mode_config;
- if (property == config->prop_crtc_id) {
- *val = (state->crtc) ? state->crtc->base.id : 0;
- } else if (property == config->dpms_property) {
- if (state->crtc && state->crtc->state->self_refresh_active)
- *val = DRM_MODE_DPMS_ON;
- else
- *val = connector->dpms;
- } else if (property == config->tv_select_subconnector_property) {
- *val = state->tv.subconnector;
- } else if (property == config->tv_left_margin_property) {
- *val = state->tv.margins.left;
- } else if (property == config->tv_right_margin_property) {
- *val = state->tv.margins.right;
- } else if (property == config->tv_top_margin_property) {
- *val = state->tv.margins.top;
- } else if (property == config->tv_bottom_margin_property) {
- *val = state->tv.margins.bottom;
- } else if (property == config->tv_mode_property) {
- *val = state->tv.mode;
- } else if (property == config->tv_brightness_property) {
- *val = state->tv.brightness;
- } else if (property == config->tv_contrast_property) {
- *val = state->tv.contrast;
- } else if (property == config->tv_flicker_reduction_property) {
- *val = state->tv.flicker_reduction;
- } else if (property == config->tv_overscan_property) {
- *val = state->tv.overscan;
- } else if (property == config->tv_saturation_property) {
- *val = state->tv.saturation;
- } else if (property == config->tv_hue_property) {
- *val = state->tv.hue;
- } else if (property == config->link_status_property) {
- *val = state->link_status;
- } else if (property == config->aspect_ratio_property) {
- *val = state->picture_aspect_ratio;
- } else if (property == config->content_type_property) {
- *val = state->content_type;
- } else if (property == connector->colorspace_property) {
- *val = state->colorspace;
- } else if (property == connector->scaling_mode_property) {
- *val = state->scaling_mode;
- } else if (property == config->hdr_output_metadata_property) {
- *val = state->hdr_output_metadata ?
- state->hdr_output_metadata->base.id : 0;
- } else if (property == config->content_protection_property) {
- *val = state->content_protection;
- } else if (property == config->hdcp_content_type_property) {
- *val = state->hdcp_content_type;
- } else if (property == config->writeback_fb_id_property) {
- /* Writeback framebuffer is one-shot, write and forget */
- *val = 0;
- } else if (property == config->writeback_out_fence_ptr_property) {
- *val = 0;
- } else if (property == connector->max_bpc_property) {
- *val = state->max_requested_bpc;
- } else if (connector->funcs->atomic_get_property) {
- return connector->funcs->atomic_get_property(connector,
- state, property, val);
- } else {
- return -EINVAL;
- }
- return 0;
- }
- int drm_atomic_get_property(struct drm_mode_object *obj,
- struct drm_property *property, uint64_t *val)
- {
- struct drm_device *dev = property->dev;
- int ret;
- switch (obj->type) {
- case DRM_MODE_OBJECT_CONNECTOR: {
- struct drm_connector *connector = obj_to_connector(obj);
- WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
- ret = drm_atomic_connector_get_property(connector,
- connector->state, property, val);
- break;
- }
- case DRM_MODE_OBJECT_CRTC: {
- struct drm_crtc *crtc = obj_to_crtc(obj);
- WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
- ret = drm_atomic_crtc_get_property(crtc,
- crtc->state, property, val);
- break;
- }
- case DRM_MODE_OBJECT_PLANE: {
- struct drm_plane *plane = obj_to_plane(obj);
- WARN_ON(!drm_modeset_is_locked(&plane->mutex));
- ret = drm_atomic_plane_get_property(plane,
- plane->state, property, val);
- break;
- }
- default:
- ret = -EINVAL;
- break;
- }
- return ret;
- }
- /*
- * The big monster ioctl
- */
- static struct drm_pending_vblank_event *create_vblank_event(
- struct drm_crtc *crtc, uint64_t user_data)
- {
- struct drm_pending_vblank_event *e = NULL;
- e = kzalloc(sizeof *e, GFP_KERNEL);
- if (!e)
- return NULL;
- e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
- e->event.base.length = sizeof(e->event);
- e->event.vbl.crtc_id = crtc->base.id;
- e->event.vbl.user_data = user_data;
- return e;
- }
- int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state,
- struct drm_connector *connector,
- int mode)
- {
- struct drm_connector *tmp_connector;
- struct drm_connector_state *new_conn_state;
- struct drm_crtc *crtc;
- struct drm_crtc_state *crtc_state;
- int i, ret, old_mode = connector->dpms;
- bool active = false;
- ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex,
- state->acquire_ctx);
- if (ret)
- return ret;
- if (mode != DRM_MODE_DPMS_ON)
- mode = DRM_MODE_DPMS_OFF;
- connector->dpms = mode;
- crtc = connector->state->crtc;
- if (!crtc)
- goto out;
- ret = drm_atomic_add_affected_connectors(state, crtc);
- if (ret)
- goto out;
- crtc_state = drm_atomic_get_crtc_state(state, crtc);
- if (IS_ERR(crtc_state)) {
- ret = PTR_ERR(crtc_state);
- goto out;
- }
- for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) {
- if (new_conn_state->crtc != crtc)
- continue;
- if (tmp_connector->dpms == DRM_MODE_DPMS_ON) {
- active = true;
- break;
- }
- }
- crtc_state->active = active;
- ret = drm_atomic_commit(state);
- out:
- if (ret != 0)
- connector->dpms = old_mode;
- return ret;
- }
- int drm_atomic_set_property(struct drm_atomic_state *state,
- struct drm_file *file_priv,
- struct drm_mode_object *obj,
- struct drm_property *prop,
- uint64_t prop_value)
- {
- struct drm_mode_object *ref;
- int ret;
- if (!drm_property_change_valid_get(prop, prop_value, &ref))
- return -EINVAL;
- switch (obj->type) {
- case DRM_MODE_OBJECT_CONNECTOR: {
- struct drm_connector *connector = obj_to_connector(obj);
- struct drm_connector_state *connector_state;
- connector_state = drm_atomic_get_connector_state(state, connector);
- if (IS_ERR(connector_state)) {
- ret = PTR_ERR(connector_state);
- break;
- }
- ret = drm_atomic_connector_set_property(connector,
- connector_state, file_priv,
- prop, prop_value);
- break;
- }
- case DRM_MODE_OBJECT_CRTC: {
- struct drm_crtc *crtc = obj_to_crtc(obj);
- struct drm_crtc_state *crtc_state;
- crtc_state = drm_atomic_get_crtc_state(state, crtc);
- if (IS_ERR(crtc_state)) {
- ret = PTR_ERR(crtc_state);
- break;
- }
- ret = drm_atomic_crtc_set_property(crtc,
- crtc_state, prop, prop_value);
- break;
- }
- case DRM_MODE_OBJECT_PLANE: {
- struct drm_plane *plane = obj_to_plane(obj);
- struct drm_plane_state *plane_state;
- plane_state = drm_atomic_get_plane_state(state, plane);
- if (IS_ERR(plane_state)) {
- ret = PTR_ERR(plane_state);
- break;
- }
- ret = drm_atomic_plane_set_property(plane,
- plane_state, file_priv,
- prop, prop_value);
- break;
- }
- default:
- ret = -EINVAL;
- break;
- }
- drm_property_change_valid_put(prop, ref);
- return ret;
- }
- /**
- * DOC: explicit fencing properties
- *
- * Explicit fencing allows userspace to control the buffer synchronization
- * between devices. A Fence or a group of fences are transfered to/from
- * userspace using Sync File fds and there are two DRM properties for that.
- * IN_FENCE_FD on each DRM Plane to send fences to the kernel and
- * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
- *
- * As a contrast, with implicit fencing the kernel keeps track of any
- * ongoing rendering, and automatically ensures that the atomic update waits
- * for any pending rendering to complete. For shared buffers represented with
- * a &struct dma_buf this is tracked in &struct dma_resv.
- * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
- * whereas explicit fencing is what Android wants.
- *
- * "IN_FENCE_FD”:
- * Use this property to pass a fence that DRM should wait on before
- * proceeding with the Atomic Commit request and show the framebuffer for
- * the plane on the screen. The fence can be either a normal fence or a
- * merged one, the sync_file framework will handle both cases and use a
- * fence_array if a merged fence is received. Passing -1 here means no
- * fences to wait on.
- *
- * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
- * it will only check if the Sync File is a valid one.
- *
- * On the driver side the fence is stored on the @fence parameter of
- * &struct drm_plane_state. Drivers which also support implicit fencing
- * should set the implicit fence using drm_atomic_set_fence_for_plane(),
- * to make sure there's consistent behaviour between drivers in precedence
- * of implicit vs. explicit fencing.
- *
- * "OUT_FENCE_PTR”:
- * Use this property to pass a file descriptor pointer to DRM. Once the
- * Atomic Commit request call returns OUT_FENCE_PTR will be filled with
- * the file descriptor number of a Sync File. This Sync File contains the
- * CRTC fence that will be signaled when all framebuffers present on the
- * Atomic Commit * request for that given CRTC are scanned out on the
- * screen.
- *
- * The Atomic Commit request fails if a invalid pointer is passed. If the
- * Atomic Commit request fails for any other reason the out fence fd
- * returned will be -1. On a Atomic Commit with the
- * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
- *
- * Note that out-fences don't have a special interface to drivers and are
- * internally represented by a &struct drm_pending_vblank_event in struct
- * &drm_crtc_state, which is also used by the nonblocking atomic commit
- * helpers and for the DRM event handling for existing userspace.
- */
- struct drm_out_fence_state {
- s32 __user *out_fence_ptr;
- struct sync_file *sync_file;
- int fd;
- };
- static int setup_out_fence(struct drm_out_fence_state *fence_state,
- struct dma_fence *fence)
- {
- fence_state->fd = get_unused_fd_flags(O_CLOEXEC);
- if (fence_state->fd < 0)
- return fence_state->fd;
- if (put_user(fence_state->fd, fence_state->out_fence_ptr))
- return -EFAULT;
- fence_state->sync_file = sync_file_create(fence);
- if (!fence_state->sync_file)
- return -ENOMEM;
- return 0;
- }
- static int prepare_signaling(struct drm_device *dev,
- struct drm_atomic_state *state,
- struct drm_mode_atomic *arg,
- struct drm_file *file_priv,
- struct drm_out_fence_state **fence_state,
- unsigned int *num_fences)
- {
- struct drm_crtc *crtc;
- struct drm_crtc_state *crtc_state;
- struct drm_connector *conn;
- struct drm_connector_state *conn_state;
- int i, c = 0, ret;
- if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)
- return 0;
- for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
- s32 __user *fence_ptr;
- fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc);
- if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) {
- struct drm_pending_vblank_event *e;
- e = create_vblank_event(crtc, arg->user_data);
- if (!e)
- return -ENOMEM;
- crtc_state->event = e;
- }
- if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
- struct drm_pending_vblank_event *e = crtc_state->event;
- if (!file_priv)
- continue;
- ret = drm_event_reserve_init(dev, file_priv, &e->base,
- &e->event.base);
- if (ret) {
- kfree(e);
- crtc_state->event = NULL;
- return ret;
- }
- }
- if (fence_ptr) {
- struct dma_fence *fence;
- struct drm_out_fence_state *f;
- f = krealloc(*fence_state, sizeof(**fence_state) *
- (*num_fences + 1), GFP_KERNEL);
- if (!f)
- return -ENOMEM;
- memset(&f[*num_fences], 0, sizeof(*f));
- f[*num_fences].out_fence_ptr = fence_ptr;
- *fence_state = f;
- fence = drm_crtc_create_fence(crtc);
- if (!fence)
- return -ENOMEM;
- ret = setup_out_fence(&f[(*num_fences)++], fence);
- if (ret) {
- dma_fence_put(fence);
- return ret;
- }
- crtc_state->event->base.fence = fence;
- }
- c++;
- }
- for_each_new_connector_in_state(state, conn, conn_state, i) {
- struct drm_writeback_connector *wb_conn;
- struct drm_out_fence_state *f;
- struct dma_fence *fence;
- s32 __user *fence_ptr;
- if (!conn_state->writeback_job)
- continue;
- fence_ptr = get_out_fence_for_connector(state, conn);
- if (!fence_ptr)
- continue;
- f = krealloc(*fence_state, sizeof(**fence_state) *
- (*num_fences + 1), GFP_KERNEL);
- if (!f)
- return -ENOMEM;
- memset(&f[*num_fences], 0, sizeof(*f));
- f[*num_fences].out_fence_ptr = fence_ptr;
- *fence_state = f;
- wb_conn = drm_connector_to_writeback(conn);
- fence = drm_writeback_get_out_fence(wb_conn);
- if (!fence)
- return -ENOMEM;
- ret = setup_out_fence(&f[(*num_fences)++], fence);
- if (ret) {
- dma_fence_put(fence);
- return ret;
- }
- conn_state->writeback_job->out_fence = fence;
- }
- /*
- * Having this flag means user mode pends on event which will never
- * reach due to lack of at least one CRTC for signaling
- */
- if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
- return -EINVAL;
- return 0;
- }
- static void complete_signaling(struct drm_device *dev,
- struct drm_atomic_state *state,
- struct drm_out_fence_state *fence_state,
- unsigned int num_fences,
- bool install_fds)
- {
- struct drm_crtc *crtc;
- struct drm_crtc_state *crtc_state;
- int i;
- if (install_fds) {
- for (i = 0; i < num_fences; i++)
- fd_install(fence_state[i].fd,
- fence_state[i].sync_file->file);
- kfree(fence_state);
- return;
- }
- for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
- struct drm_pending_vblank_event *event = crtc_state->event;
- /*
- * Free the allocated event. drm_atomic_helper_setup_commit
- * can allocate an event too, so only free it if it's ours
- * to prevent a double free in drm_atomic_state_clear.
- */
- if (event && (event->base.fence || event->base.file_priv)) {
- drm_event_cancel_free(dev, &event->base);
- crtc_state->event = NULL;
- }
- }
- if (!fence_state)
- return;
- for (i = 0; i < num_fences; i++) {
- if (fence_state[i].sync_file)
- fput(fence_state[i].sync_file->file);
- if (fence_state[i].fd >= 0)
- put_unused_fd(fence_state[i].fd);
- /* If this fails log error to the user */
- if (fence_state[i].out_fence_ptr &&
- put_user(-1, fence_state[i].out_fence_ptr))
- DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n");
- }
- kfree(fence_state);
- }
- int drm_mode_atomic_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
- {
- struct drm_mode_atomic *arg = data;
- uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
- uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
- uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
- uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
- unsigned int copied_objs, copied_props;
- struct drm_atomic_state *state;
- struct drm_modeset_acquire_ctx ctx;
- struct drm_out_fence_state *fence_state;
- int ret = 0;
- unsigned int i, j, num_fences;
- /* disallow for drivers not supporting atomic: */
- if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
- return -EOPNOTSUPP;
- /* disallow for userspace that has not enabled atomic cap (even
- * though this may be a bit overkill, since legacy userspace
- * wouldn't know how to call this ioctl)
- */
- if (!file_priv->atomic)
- return -EINVAL;
- if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
- return -EINVAL;
- if (arg->reserved)
- return -EINVAL;
- if (arg->flags & DRM_MODE_PAGE_FLIP_ASYNC)
- return -EINVAL;
- /* can't test and expect an event at the same time. */
- if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
- (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
- return -EINVAL;
- state = drm_atomic_state_alloc(dev);
- if (!state)
- return -ENOMEM;
- drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
- state->acquire_ctx = &ctx;
- state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
- retry:
- copied_objs = 0;
- copied_props = 0;
- fence_state = NULL;
- num_fences = 0;
- for (i = 0; i < arg->count_objs; i++) {
- uint32_t obj_id, count_props;
- struct drm_mode_object *obj;
- if (get_user(obj_id, objs_ptr + copied_objs)) {
- ret = -EFAULT;
- goto out;
- }
- obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY);
- if (!obj) {
- ret = -ENOENT;
- goto out;
- }
- if (!obj->properties) {
- drm_mode_object_put(obj);
- ret = -ENOENT;
- goto out;
- }
- if (get_user(count_props, count_props_ptr + copied_objs)) {
- drm_mode_object_put(obj);
- ret = -EFAULT;
- goto out;
- }
- copied_objs++;
- for (j = 0; j < count_props; j++) {
- uint32_t prop_id;
- uint64_t prop_value;
- struct drm_property *prop;
- if (get_user(prop_id, props_ptr + copied_props)) {
- drm_mode_object_put(obj);
- ret = -EFAULT;
- goto out;
- }
- prop = drm_mode_obj_find_prop_id(obj, prop_id);
- if (!prop) {
- drm_mode_object_put(obj);
- ret = -ENOENT;
- goto out;
- }
- if (copy_from_user(&prop_value,
- prop_values_ptr + copied_props,
- sizeof(prop_value))) {
- drm_mode_object_put(obj);
- ret = -EFAULT;
- goto out;
- }
- ret = drm_atomic_set_property(state, file_priv,
- obj, prop, prop_value);
- if (ret) {
- drm_mode_object_put(obj);
- goto out;
- }
- copied_props++;
- }
- drm_mode_object_put(obj);
- }
- ret = prepare_signaling(dev, state, arg, file_priv, &fence_state,
- &num_fences);
- if (ret)
- goto out;
- if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
- ret = drm_atomic_check_only(state);
- } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
- ret = drm_atomic_nonblocking_commit(state);
- } else {
- if (drm_debug_enabled(DRM_UT_STATE))
- drm_atomic_print_state(state);
- ret = drm_atomic_commit(state);
- }
- out:
- complete_signaling(dev, state, fence_state, num_fences, !ret);
- if (ret == -EDEADLK) {
- drm_atomic_state_clear(state);
- ret = drm_modeset_backoff(&ctx);
- if (!ret)
- goto retry;
- }
- drm_atomic_state_put(state);
- drm_modeset_drop_locks(&ctx);
- drm_modeset_acquire_fini(&ctx);
- return ret;
- }
|