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![Boris Brezillon](/assets/img/avatar_default.png)
Use container_of() instead of type casting so that it keeps working even if base is moved inside the drm_writeback_connector struct. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180703075022.15138-2-boris.brezillon@bootlin.com
2685 lines
81 KiB
C
2685 lines
81 KiB
C
/*
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* Copyright (C) 2014 Red Hat
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* Copyright (C) 2014 Intel Corp.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Rob Clark <robdclark@gmail.com>
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* Daniel Vetter <daniel.vetter@ffwll.ch>
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*/
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#include <drm/drmP.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_mode.h>
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#include <drm/drm_print.h>
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#include <drm/drm_writeback.h>
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#include <linux/sync_file.h>
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#include "drm_crtc_internal.h"
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#include "drm_internal.h"
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void __drm_crtc_commit_free(struct kref *kref)
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{
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struct drm_crtc_commit *commit =
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container_of(kref, struct drm_crtc_commit, ref);
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kfree(commit);
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}
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EXPORT_SYMBOL(__drm_crtc_commit_free);
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/**
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* drm_atomic_state_default_release -
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* release memory initialized by drm_atomic_state_init
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* @state: atomic state
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*
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* Free all the memory allocated by drm_atomic_state_init.
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* This should only be used by drivers which are still subclassing
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* &drm_atomic_state and haven't switched to &drm_private_state yet.
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*/
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void drm_atomic_state_default_release(struct drm_atomic_state *state)
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{
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kfree(state->connectors);
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kfree(state->crtcs);
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kfree(state->planes);
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kfree(state->private_objs);
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}
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EXPORT_SYMBOL(drm_atomic_state_default_release);
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/**
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* drm_atomic_state_init - init new atomic state
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* @dev: DRM device
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* @state: atomic state
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*
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* Default implementation for filling in a new atomic state.
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* This should only be used by drivers which are still subclassing
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* &drm_atomic_state and haven't switched to &drm_private_state yet.
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*/
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int
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drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state)
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{
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kref_init(&state->ref);
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/* TODO legacy paths should maybe do a better job about
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* setting this appropriately?
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*/
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state->allow_modeset = true;
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state->crtcs = kcalloc(dev->mode_config.num_crtc,
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sizeof(*state->crtcs), GFP_KERNEL);
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if (!state->crtcs)
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goto fail;
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state->planes = kcalloc(dev->mode_config.num_total_plane,
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sizeof(*state->planes), GFP_KERNEL);
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if (!state->planes)
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goto fail;
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state->dev = dev;
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DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state);
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return 0;
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fail:
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drm_atomic_state_default_release(state);
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return -ENOMEM;
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}
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EXPORT_SYMBOL(drm_atomic_state_init);
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/**
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* drm_atomic_state_alloc - allocate atomic state
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* @dev: DRM device
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*
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* This allocates an empty atomic state to track updates.
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*/
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struct drm_atomic_state *
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drm_atomic_state_alloc(struct drm_device *dev)
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{
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struct drm_mode_config *config = &dev->mode_config;
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if (!config->funcs->atomic_state_alloc) {
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struct drm_atomic_state *state;
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state = kzalloc(sizeof(*state), GFP_KERNEL);
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if (!state)
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return NULL;
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if (drm_atomic_state_init(dev, state) < 0) {
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kfree(state);
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return NULL;
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}
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return state;
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}
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return config->funcs->atomic_state_alloc(dev);
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}
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EXPORT_SYMBOL(drm_atomic_state_alloc);
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/**
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* drm_atomic_state_default_clear - clear base atomic state
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* @state: atomic state
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*
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* Default implementation for clearing atomic state.
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* This should only be used by drivers which are still subclassing
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* &drm_atomic_state and haven't switched to &drm_private_state yet.
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*/
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void drm_atomic_state_default_clear(struct drm_atomic_state *state)
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{
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struct drm_device *dev = state->dev;
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struct drm_mode_config *config = &dev->mode_config;
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int i;
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DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state);
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for (i = 0; i < state->num_connector; i++) {
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struct drm_connector *connector = state->connectors[i].ptr;
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if (!connector)
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continue;
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connector->funcs->atomic_destroy_state(connector,
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state->connectors[i].state);
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state->connectors[i].ptr = NULL;
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state->connectors[i].state = NULL;
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state->connectors[i].old_state = NULL;
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state->connectors[i].new_state = NULL;
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drm_connector_put(connector);
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}
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for (i = 0; i < config->num_crtc; i++) {
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struct drm_crtc *crtc = state->crtcs[i].ptr;
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if (!crtc)
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continue;
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crtc->funcs->atomic_destroy_state(crtc,
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state->crtcs[i].state);
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state->crtcs[i].ptr = NULL;
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state->crtcs[i].state = NULL;
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state->crtcs[i].old_state = NULL;
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state->crtcs[i].new_state = NULL;
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}
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for (i = 0; i < config->num_total_plane; i++) {
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struct drm_plane *plane = state->planes[i].ptr;
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if (!plane)
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continue;
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plane->funcs->atomic_destroy_state(plane,
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state->planes[i].state);
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state->planes[i].ptr = NULL;
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state->planes[i].state = NULL;
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state->planes[i].old_state = NULL;
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state->planes[i].new_state = NULL;
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}
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for (i = 0; i < state->num_private_objs; i++) {
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struct drm_private_obj *obj = state->private_objs[i].ptr;
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obj->funcs->atomic_destroy_state(obj,
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state->private_objs[i].state);
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state->private_objs[i].ptr = NULL;
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state->private_objs[i].state = NULL;
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state->private_objs[i].old_state = NULL;
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state->private_objs[i].new_state = NULL;
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}
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state->num_private_objs = 0;
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if (state->fake_commit) {
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drm_crtc_commit_put(state->fake_commit);
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state->fake_commit = NULL;
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}
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}
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EXPORT_SYMBOL(drm_atomic_state_default_clear);
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/**
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* drm_atomic_state_clear - clear state object
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* @state: atomic state
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*
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* When the w/w mutex algorithm detects a deadlock we need to back off and drop
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* all locks. So someone else could sneak in and change the current modeset
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* configuration. Which means that all the state assembled in @state is no
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* longer an atomic update to the current state, but to some arbitrary earlier
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* state. Which could break assumptions the driver's
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* &drm_mode_config_funcs.atomic_check likely relies on.
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*
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* Hence we must clear all cached state and completely start over, using this
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* function.
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*/
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void drm_atomic_state_clear(struct drm_atomic_state *state)
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{
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struct drm_device *dev = state->dev;
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struct drm_mode_config *config = &dev->mode_config;
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if (config->funcs->atomic_state_clear)
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config->funcs->atomic_state_clear(state);
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else
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drm_atomic_state_default_clear(state);
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}
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EXPORT_SYMBOL(drm_atomic_state_clear);
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/**
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* __drm_atomic_state_free - free all memory for an atomic state
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* @ref: This atomic state to deallocate
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*
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* This frees all memory associated with an atomic state, including all the
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* per-object state for planes, crtcs and connectors.
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*/
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void __drm_atomic_state_free(struct kref *ref)
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{
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struct drm_atomic_state *state = container_of(ref, typeof(*state), ref);
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struct drm_mode_config *config = &state->dev->mode_config;
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drm_atomic_state_clear(state);
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DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state);
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if (config->funcs->atomic_state_free) {
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config->funcs->atomic_state_free(state);
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} else {
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drm_atomic_state_default_release(state);
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kfree(state);
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}
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}
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EXPORT_SYMBOL(__drm_atomic_state_free);
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/**
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* drm_atomic_get_crtc_state - get crtc state
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* @state: global atomic state object
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* @crtc: crtc to get state object for
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*
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* This function returns the crtc state for the given crtc, allocating it if
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* needed. It will also grab the relevant crtc lock to make sure that the state
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* is consistent.
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*
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* Returns:
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*
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* Either the allocated state or the error code encoded into the pointer. When
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* the error is EDEADLK then the w/w mutex code has detected a deadlock and the
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* entire atomic sequence must be restarted. All other errors are fatal.
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*/
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struct drm_crtc_state *
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drm_atomic_get_crtc_state(struct drm_atomic_state *state,
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struct drm_crtc *crtc)
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{
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int ret, index = drm_crtc_index(crtc);
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struct drm_crtc_state *crtc_state;
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WARN_ON(!state->acquire_ctx);
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crtc_state = drm_atomic_get_existing_crtc_state(state, crtc);
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if (crtc_state)
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return crtc_state;
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ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx);
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if (ret)
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return ERR_PTR(ret);
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crtc_state = crtc->funcs->atomic_duplicate_state(crtc);
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if (!crtc_state)
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return ERR_PTR(-ENOMEM);
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state->crtcs[index].state = crtc_state;
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state->crtcs[index].old_state = crtc->state;
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state->crtcs[index].new_state = crtc_state;
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state->crtcs[index].ptr = crtc;
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crtc_state->state = state;
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DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n",
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crtc->base.id, crtc->name, crtc_state, state);
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return crtc_state;
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}
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EXPORT_SYMBOL(drm_atomic_get_crtc_state);
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static void set_out_fence_for_crtc(struct drm_atomic_state *state,
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struct drm_crtc *crtc, s32 __user *fence_ptr)
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{
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state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr;
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}
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static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
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struct drm_crtc *crtc)
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{
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s32 __user *fence_ptr;
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fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr;
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state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL;
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return fence_ptr;
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}
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static int set_out_fence_for_connector(struct drm_atomic_state *state,
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struct drm_connector *connector,
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s32 __user *fence_ptr)
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{
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unsigned int index = drm_connector_index(connector);
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if (!fence_ptr)
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return 0;
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if (put_user(-1, fence_ptr))
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return -EFAULT;
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state->connectors[index].out_fence_ptr = fence_ptr;
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return 0;
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}
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static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state,
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struct drm_connector *connector)
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{
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unsigned int index = drm_connector_index(connector);
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s32 __user *fence_ptr;
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fence_ptr = state->connectors[index].out_fence_ptr;
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state->connectors[index].out_fence_ptr = NULL;
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return fence_ptr;
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}
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/**
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* drm_atomic_set_mode_for_crtc - set mode for CRTC
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* @state: the CRTC whose incoming state to update
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* @mode: kernel-internal mode to use for the CRTC, or NULL to disable
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*
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* Set a mode (originating from the kernel) on the desired CRTC state and update
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* the enable property.
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*
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* RETURNS:
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* Zero on success, error code on failure. Cannot return -EDEADLK.
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*/
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int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
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const struct drm_display_mode *mode)
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{
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struct drm_crtc *crtc = state->crtc;
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struct drm_mode_modeinfo umode;
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/* Early return for no change. */
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if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
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return 0;
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drm_property_blob_put(state->mode_blob);
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state->mode_blob = NULL;
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if (mode) {
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drm_mode_convert_to_umode(&umode, mode);
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state->mode_blob =
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drm_property_create_blob(state->crtc->dev,
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sizeof(umode),
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&umode);
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if (IS_ERR(state->mode_blob))
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return PTR_ERR(state->mode_blob);
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drm_mode_copy(&state->mode, mode);
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state->enable = true;
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DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
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mode->name, crtc->base.id, crtc->name, state);
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} else {
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memset(&state->mode, 0, sizeof(state->mode));
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state->enable = false;
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DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
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crtc->base.id, crtc->name, state);
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}
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return 0;
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}
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EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
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/**
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* drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
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* @state: the CRTC whose incoming state to update
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* @blob: pointer to blob property to use for mode
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*
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* Set a mode (originating from a blob property) on the desired CRTC state.
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* This function will take a reference on the blob property for the CRTC state,
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* and release the reference held on the state's existing mode property, if any
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* was set.
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*
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* RETURNS:
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* Zero on success, error code on failure. Cannot return -EDEADLK.
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*/
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int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
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struct drm_property_blob *blob)
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{
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struct drm_crtc *crtc = state->crtc;
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if (blob == state->mode_blob)
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return 0;
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drm_property_blob_put(state->mode_blob);
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state->mode_blob = NULL;
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memset(&state->mode, 0, sizeof(state->mode));
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|
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if (blob) {
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int ret;
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|
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if (blob->length != sizeof(struct drm_mode_modeinfo)) {
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DRM_DEBUG_ATOMIC("[CRTC:%d:%s] bad mode blob length: %zu\n",
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crtc->base.id, crtc->name,
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blob->length);
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return -EINVAL;
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}
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|
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ret = drm_mode_convert_umode(crtc->dev,
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&state->mode, blob->data);
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if (ret) {
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DRM_DEBUG_ATOMIC("[CRTC:%d:%s] invalid mode (ret=%d, status=%s):\n",
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crtc->base.id, crtc->name,
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ret, drm_get_mode_status_name(state->mode.status));
|
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drm_mode_debug_printmodeline(&state->mode);
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return -EINVAL;
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}
|
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|
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state->mode_blob = drm_property_blob_get(blob);
|
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state->enable = true;
|
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DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
|
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state->mode.name, crtc->base.id, crtc->name,
|
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state);
|
|
} else {
|
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state->enable = false;
|
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DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
|
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crtc->base.id, crtc->name, state);
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}
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|
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return 0;
|
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}
|
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EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc);
|
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|
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/**
|
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* drm_atomic_replace_property_blob_from_id - lookup the new blob and replace the old one with it
|
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* @dev: DRM device
|
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* @blob: a pointer to the member blob to be replaced
|
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* @blob_id: ID of the new blob
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* @expected_size: total expected size of the blob data (in bytes)
|
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* @expected_elem_size: expected element size of the blob data (in bytes)
|
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* @replaced: did the blob get replaced?
|
|
*
|
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* Replace @blob with another blob with the ID @blob_id. If @blob_id is zero
|
|
* @blob becomes NULL.
|
|
*
|
|
* If @expected_size is positive the new blob length is expected to be equal
|
|
* to @expected_size bytes. If @expected_elem_size is positive the new blob
|
|
* length is expected to be a multiple of @expected_elem_size bytes. Otherwise
|
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* an error is returned.
|
|
*
|
|
* @replaced will indicate to the caller whether the blob was replaced or not.
|
|
* If the old and new blobs were in fact the same blob @replaced will be false
|
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* otherwise it will be true.
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* drm_atomic_crtc_set_property - set property on CRTC
|
|
* @crtc: the drm CRTC to set a property on
|
|
* @state: the state object to update with the new property value
|
|
* @property: the property to set
|
|
* @val: the new property value
|
|
*
|
|
* This function handles generic/core properties and calls out to driver's
|
|
* &drm_crtc_funcs.atomic_set_property for driver properties. To ensure
|
|
* consistent behavior you must call this function rather than the driver hook
|
|
* directly.
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, error code on failure
|
|
*/
|
|
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->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;
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_crtc_set_property);
|
|
|
|
/**
|
|
* drm_atomic_crtc_get_property - get property value from CRTC state
|
|
* @crtc: the drm CRTC to set a property on
|
|
* @state: the state object to get the property value from
|
|
* @property: the property to set
|
|
* @val: return location for the property value
|
|
*
|
|
* This function handles generic/core properties and calls out to driver's
|
|
* &drm_crtc_funcs.atomic_get_property for driver properties. To ensure
|
|
* consistent behavior you must call this function rather than the driver hook
|
|
* directly.
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, error code on failure
|
|
*/
|
|
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 = state->active;
|
|
else if (property == config->prop_mode_id)
|
|
*val = (state->mode_blob) ? state->mode_blob->base.id : 0;
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* drm_atomic_crtc_check - check crtc state
|
|
* @crtc: crtc to check
|
|
* @state: crtc state to check
|
|
*
|
|
* Provides core sanity checks for crtc state.
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, error code on failure
|
|
*/
|
|
static int drm_atomic_crtc_check(struct drm_crtc *crtc,
|
|
struct drm_crtc_state *state)
|
|
{
|
|
/* NOTE: we explicitly don't enforce constraints such as primary
|
|
* layer covering entire screen, since that is something we want
|
|
* to allow (on hw that supports it). For hw that does not, it
|
|
* should be checked in driver's crtc->atomic_check() vfunc.
|
|
*
|
|
* TODO: Add generic modeset state checks once we support those.
|
|
*/
|
|
|
|
if (state->active && !state->enable) {
|
|
DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n",
|
|
crtc->base.id, crtc->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* The state->enable vs. state->mode_blob checks can be WARN_ON,
|
|
* as this is a kernel-internal detail that userspace should never
|
|
* be able to trigger. */
|
|
if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) &&
|
|
WARN_ON(state->enable && !state->mode_blob)) {
|
|
DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n",
|
|
crtc->base.id, crtc->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) &&
|
|
WARN_ON(!state->enable && state->mode_blob)) {
|
|
DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n",
|
|
crtc->base.id, crtc->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Reject event generation for when a CRTC is off and stays off.
|
|
* It wouldn't be hard to implement this, but userspace has a track
|
|
* record of happily burning through 100% cpu (or worse, crash) when the
|
|
* display pipe is suspended. To avoid all that fun just reject updates
|
|
* that ask for events since likely that indicates a bug in the
|
|
* compositor's drawing loop. This is consistent with the vblank IOCTL
|
|
* and legacy page_flip IOCTL which also reject service on a disabled
|
|
* pipe.
|
|
*/
|
|
if (state->event && !state->active && !crtc->state->active) {
|
|
DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requesting event but off\n",
|
|
crtc->base.id, crtc->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void drm_atomic_crtc_print_state(struct drm_printer *p,
|
|
const struct drm_crtc_state *state)
|
|
{
|
|
struct drm_crtc *crtc = state->crtc;
|
|
|
|
drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name);
|
|
drm_printf(p, "\tenable=%d\n", state->enable);
|
|
drm_printf(p, "\tactive=%d\n", state->active);
|
|
drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed);
|
|
drm_printf(p, "\tmode_changed=%d\n", state->mode_changed);
|
|
drm_printf(p, "\tactive_changed=%d\n", state->active_changed);
|
|
drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed);
|
|
drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed);
|
|
drm_printf(p, "\tplane_mask=%x\n", state->plane_mask);
|
|
drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask);
|
|
drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask);
|
|
drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode));
|
|
|
|
if (crtc->funcs->atomic_print_state)
|
|
crtc->funcs->atomic_print_state(p, state);
|
|
}
|
|
|
|
/**
|
|
* drm_atomic_connector_check - check connector state
|
|
* @connector: connector to check
|
|
* @state: connector state to check
|
|
*
|
|
* Provides core sanity checks for connector state.
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, error code on failure
|
|
*/
|
|
static int drm_atomic_connector_check(struct drm_connector *connector,
|
|
struct drm_connector_state *state)
|
|
{
|
|
struct drm_crtc_state *crtc_state;
|
|
struct drm_writeback_job *writeback_job = state->writeback_job;
|
|
|
|
if ((connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK) || !writeback_job)
|
|
return 0;
|
|
|
|
if (writeback_job->fb && !state->crtc) {
|
|
DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] framebuffer without CRTC\n",
|
|
connector->base.id, connector->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (state->crtc)
|
|
crtc_state = drm_atomic_get_existing_crtc_state(state->state,
|
|
state->crtc);
|
|
|
|
if (writeback_job->fb && !crtc_state->active) {
|
|
DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] has framebuffer, but [CRTC:%d] is off\n",
|
|
connector->base.id, connector->name,
|
|
state->crtc->base.id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (writeback_job->out_fence && !writeback_job->fb) {
|
|
DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] requesting out-fence without framebuffer\n",
|
|
connector->base.id, connector->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_atomic_get_plane_state - get plane state
|
|
* @state: global atomic state object
|
|
* @plane: plane to get state object for
|
|
*
|
|
* This function returns the plane state for the given plane, allocating it if
|
|
* needed. It will also grab the relevant plane lock to make sure that the state
|
|
* is consistent.
|
|
*
|
|
* Returns:
|
|
*
|
|
* Either the allocated state or the error code encoded into the pointer. 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.
|
|
*/
|
|
struct drm_plane_state *
|
|
drm_atomic_get_plane_state(struct drm_atomic_state *state,
|
|
struct drm_plane *plane)
|
|
{
|
|
int ret, index = drm_plane_index(plane);
|
|
struct drm_plane_state *plane_state;
|
|
|
|
WARN_ON(!state->acquire_ctx);
|
|
|
|
/* the legacy pointers should never be set */
|
|
WARN_ON(plane->fb);
|
|
WARN_ON(plane->old_fb);
|
|
WARN_ON(plane->crtc);
|
|
|
|
plane_state = drm_atomic_get_existing_plane_state(state, plane);
|
|
if (plane_state)
|
|
return plane_state;
|
|
|
|
ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
plane_state = plane->funcs->atomic_duplicate_state(plane);
|
|
if (!plane_state)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
state->planes[index].state = plane_state;
|
|
state->planes[index].ptr = plane;
|
|
state->planes[index].old_state = plane->state;
|
|
state->planes[index].new_state = plane_state;
|
|
plane_state->state = state;
|
|
|
|
DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n",
|
|
plane->base.id, plane->name, plane_state, state);
|
|
|
|
if (plane_state->crtc) {
|
|
struct drm_crtc_state *crtc_state;
|
|
|
|
crtc_state = drm_atomic_get_crtc_state(state,
|
|
plane_state->crtc);
|
|
if (IS_ERR(crtc_state))
|
|
return ERR_CAST(crtc_state);
|
|
}
|
|
|
|
return plane_state;
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_get_plane_state);
|
|
|
|
/**
|
|
* drm_atomic_plane_set_property - set property on plane
|
|
* @plane: the drm plane to set a property on
|
|
* @state: the state object to update with the new property value
|
|
* @property: the property to set
|
|
* @val: the new property value
|
|
*
|
|
* This function handles generic/core properties and calls out to driver's
|
|
* &drm_plane_funcs.atomic_set_property for driver properties. To ensure
|
|
* consistent behavior you must call this function rather than the driver hook
|
|
* directly.
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, error code on failure
|
|
*/
|
|
static int drm_atomic_plane_set_property(struct drm_plane *plane,
|
|
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) {
|
|
struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, 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, NULL, val);
|
|
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->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 (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;
|
|
}
|
|
|
|
/**
|
|
* drm_atomic_plane_get_property - get property value from plane state
|
|
* @plane: the drm plane to set a property on
|
|
* @state: the state object to get the property value from
|
|
* @property: the property to set
|
|
* @val: return location for the property value
|
|
*
|
|
* This function handles generic/core properties and calls out to driver's
|
|
* &drm_plane_funcs.atomic_get_property for driver properties. To ensure
|
|
* consistent behavior you must call this function rather than the driver hook
|
|
* directly.
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, error code on failure
|
|
*/
|
|
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->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 (plane->funcs->atomic_get_property) {
|
|
return plane->funcs->atomic_get_property(plane, state, property, val);
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool
|
|
plane_switching_crtc(struct drm_atomic_state *state,
|
|
struct drm_plane *plane,
|
|
struct drm_plane_state *plane_state)
|
|
{
|
|
if (!plane->state->crtc || !plane_state->crtc)
|
|
return false;
|
|
|
|
if (plane->state->crtc == plane_state->crtc)
|
|
return false;
|
|
|
|
/* This could be refined, but currently there's no helper or driver code
|
|
* to implement direct switching of active planes nor userspace to take
|
|
* advantage of more direct plane switching without the intermediate
|
|
* full OFF state.
|
|
*/
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* drm_atomic_plane_check - check plane state
|
|
* @plane: plane to check
|
|
* @state: plane state to check
|
|
*
|
|
* Provides core sanity checks for plane state.
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, error code on failure
|
|
*/
|
|
static int drm_atomic_plane_check(struct drm_plane *plane,
|
|
struct drm_plane_state *state)
|
|
{
|
|
unsigned int fb_width, fb_height;
|
|
int ret;
|
|
|
|
/* either *both* CRTC and FB must be set, or neither */
|
|
if (state->crtc && !state->fb) {
|
|
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] CRTC set but no FB\n",
|
|
plane->base.id, plane->name);
|
|
return -EINVAL;
|
|
} else if (state->fb && !state->crtc) {
|
|
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] FB set but no CRTC\n",
|
|
plane->base.id, plane->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* if disabled, we don't care about the rest of the state: */
|
|
if (!state->crtc)
|
|
return 0;
|
|
|
|
/* Check whether this plane is usable on this CRTC */
|
|
if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) {
|
|
DRM_DEBUG_ATOMIC("Invalid [CRTC:%d:%s] for [PLANE:%d:%s]\n",
|
|
state->crtc->base.id, state->crtc->name,
|
|
plane->base.id, plane->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Check whether this plane supports the fb pixel format. */
|
|
ret = drm_plane_check_pixel_format(plane, state->fb->format->format,
|
|
state->fb->modifier);
|
|
if (ret) {
|
|
struct drm_format_name_buf format_name;
|
|
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid pixel format %s, modifier 0x%llx\n",
|
|
plane->base.id, plane->name,
|
|
drm_get_format_name(state->fb->format->format,
|
|
&format_name),
|
|
state->fb->modifier);
|
|
return ret;
|
|
}
|
|
|
|
/* Give drivers some help against integer overflows */
|
|
if (state->crtc_w > INT_MAX ||
|
|
state->crtc_x > INT_MAX - (int32_t) state->crtc_w ||
|
|
state->crtc_h > INT_MAX ||
|
|
state->crtc_y > INT_MAX - (int32_t) state->crtc_h) {
|
|
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid CRTC coordinates %ux%u+%d+%d\n",
|
|
plane->base.id, plane->name,
|
|
state->crtc_w, state->crtc_h,
|
|
state->crtc_x, state->crtc_y);
|
|
return -ERANGE;
|
|
}
|
|
|
|
fb_width = state->fb->width << 16;
|
|
fb_height = state->fb->height << 16;
|
|
|
|
/* Make sure source coordinates are inside the fb. */
|
|
if (state->src_w > fb_width ||
|
|
state->src_x > fb_width - state->src_w ||
|
|
state->src_h > fb_height ||
|
|
state->src_y > fb_height - state->src_h) {
|
|
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid source coordinates "
|
|
"%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
|
|
plane->base.id, plane->name,
|
|
state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10,
|
|
state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10,
|
|
state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10,
|
|
state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10,
|
|
state->fb->width, state->fb->height);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
if (plane_switching_crtc(state->state, plane, state)) {
|
|
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n",
|
|
plane->base.id, plane->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void drm_atomic_plane_print_state(struct drm_printer *p,
|
|
const struct drm_plane_state *state)
|
|
{
|
|
struct drm_plane *plane = state->plane;
|
|
struct drm_rect src = drm_plane_state_src(state);
|
|
struct drm_rect dest = drm_plane_state_dest(state);
|
|
|
|
drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name);
|
|
drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)");
|
|
drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0);
|
|
if (state->fb)
|
|
drm_framebuffer_print_info(p, 2, state->fb);
|
|
drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest));
|
|
drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src));
|
|
drm_printf(p, "\trotation=%x\n", state->rotation);
|
|
drm_printf(p, "\tnormalized-zpos=%x\n", state->normalized_zpos);
|
|
drm_printf(p, "\tcolor-encoding=%s\n",
|
|
drm_get_color_encoding_name(state->color_encoding));
|
|
drm_printf(p, "\tcolor-range=%s\n",
|
|
drm_get_color_range_name(state->color_range));
|
|
|
|
if (plane->funcs->atomic_print_state)
|
|
plane->funcs->atomic_print_state(p, state);
|
|
}
|
|
|
|
/**
|
|
* DOC: handling driver private state
|
|
*
|
|
* Very often the DRM objects exposed to userspace in the atomic modeset api
|
|
* (&drm_connector, &drm_crtc and &drm_plane) do not map neatly to the
|
|
* underlying hardware. Especially for any kind of shared resources (e.g. shared
|
|
* clocks, scaler units, bandwidth and fifo limits shared among a group of
|
|
* planes or CRTCs, and so on) it makes sense to model these as independent
|
|
* objects. Drivers then need to do similar state tracking and commit ordering for
|
|
* such private (since not exposed to userpace) objects as the atomic core and
|
|
* helpers already provide for connectors, planes and CRTCs.
|
|
*
|
|
* To make this easier on drivers the atomic core provides some support to track
|
|
* driver private state objects using struct &drm_private_obj, with the
|
|
* associated state struct &drm_private_state.
|
|
*
|
|
* Similar to userspace-exposed objects, private state structures can be
|
|
* acquired by calling drm_atomic_get_private_obj_state(). Since this function
|
|
* does not take care of locking, drivers should wrap it for each type of
|
|
* private state object they have with the required call to drm_modeset_lock()
|
|
* for the corresponding &drm_modeset_lock.
|
|
*
|
|
* All private state structures contained in a &drm_atomic_state update can be
|
|
* iterated using for_each_oldnew_private_obj_in_state(),
|
|
* for_each_new_private_obj_in_state() and for_each_old_private_obj_in_state().
|
|
* Drivers are recommended to wrap these for each type of driver private state
|
|
* object they have, filtering on &drm_private_obj.funcs using for_each_if(), at
|
|
* least if they want to iterate over all objects of a given type.
|
|
*
|
|
* An earlier way to handle driver private state was by subclassing struct
|
|
* &drm_atomic_state. But since that encourages non-standard ways to implement
|
|
* the check/commit split atomic requires (by using e.g. "check and rollback or
|
|
* commit instead" of "duplicate state, check, then either commit or release
|
|
* duplicated state) it is deprecated in favour of using &drm_private_state.
|
|
*/
|
|
|
|
/**
|
|
* drm_atomic_private_obj_init - initialize private object
|
|
* @obj: private object
|
|
* @state: initial private object state
|
|
* @funcs: pointer to the struct of function pointers that identify the object
|
|
* type
|
|
*
|
|
* Initialize the private object, which can be embedded into any
|
|
* driver private object that needs its own atomic state.
|
|
*/
|
|
void
|
|
drm_atomic_private_obj_init(struct drm_private_obj *obj,
|
|
struct drm_private_state *state,
|
|
const struct drm_private_state_funcs *funcs)
|
|
{
|
|
memset(obj, 0, sizeof(*obj));
|
|
|
|
obj->state = state;
|
|
obj->funcs = funcs;
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_private_obj_init);
|
|
|
|
/**
|
|
* drm_atomic_private_obj_fini - finalize private object
|
|
* @obj: private object
|
|
*
|
|
* Finalize the private object.
|
|
*/
|
|
void
|
|
drm_atomic_private_obj_fini(struct drm_private_obj *obj)
|
|
{
|
|
obj->funcs->atomic_destroy_state(obj, obj->state);
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_private_obj_fini);
|
|
|
|
/**
|
|
* drm_atomic_get_private_obj_state - get private object state
|
|
* @state: global atomic state
|
|
* @obj: private object to get the state for
|
|
*
|
|
* This function returns the private object state for the given private object,
|
|
* allocating the state if needed. It does not grab any locks as the caller is
|
|
* expected to care of any required locking.
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* Either the allocated state or the error code encoded into a pointer.
|
|
*/
|
|
struct drm_private_state *
|
|
drm_atomic_get_private_obj_state(struct drm_atomic_state *state,
|
|
struct drm_private_obj *obj)
|
|
{
|
|
int index, num_objs, i;
|
|
size_t size;
|
|
struct __drm_private_objs_state *arr;
|
|
struct drm_private_state *obj_state;
|
|
|
|
for (i = 0; i < state->num_private_objs; i++)
|
|
if (obj == state->private_objs[i].ptr)
|
|
return state->private_objs[i].state;
|
|
|
|
num_objs = state->num_private_objs + 1;
|
|
size = sizeof(*state->private_objs) * num_objs;
|
|
arr = krealloc(state->private_objs, size, GFP_KERNEL);
|
|
if (!arr)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
state->private_objs = arr;
|
|
index = state->num_private_objs;
|
|
memset(&state->private_objs[index], 0, sizeof(*state->private_objs));
|
|
|
|
obj_state = obj->funcs->atomic_duplicate_state(obj);
|
|
if (!obj_state)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
state->private_objs[index].state = obj_state;
|
|
state->private_objs[index].old_state = obj->state;
|
|
state->private_objs[index].new_state = obj_state;
|
|
state->private_objs[index].ptr = obj;
|
|
obj_state->state = state;
|
|
|
|
state->num_private_objs = num_objs;
|
|
|
|
DRM_DEBUG_ATOMIC("Added new private object %p state %p to %p\n",
|
|
obj, obj_state, state);
|
|
|
|
return obj_state;
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_get_private_obj_state);
|
|
|
|
/**
|
|
* drm_atomic_get_connector_state - get connector state
|
|
* @state: global atomic state object
|
|
* @connector: connector to get state object for
|
|
*
|
|
* This function returns the connector state for the given connector,
|
|
* allocating it if needed. It will also grab the relevant connector lock to
|
|
* make sure that the state is consistent.
|
|
*
|
|
* Returns:
|
|
*
|
|
* Either the allocated state or the error code encoded into the pointer. 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.
|
|
*/
|
|
struct drm_connector_state *
|
|
drm_atomic_get_connector_state(struct drm_atomic_state *state,
|
|
struct drm_connector *connector)
|
|
{
|
|
int ret, index;
|
|
struct drm_mode_config *config = &connector->dev->mode_config;
|
|
struct drm_connector_state *connector_state;
|
|
|
|
WARN_ON(!state->acquire_ctx);
|
|
|
|
ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
index = drm_connector_index(connector);
|
|
|
|
if (index >= state->num_connector) {
|
|
struct __drm_connnectors_state *c;
|
|
int alloc = max(index + 1, config->num_connector);
|
|
|
|
c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL);
|
|
if (!c)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
state->connectors = c;
|
|
memset(&state->connectors[state->num_connector], 0,
|
|
sizeof(*state->connectors) * (alloc - state->num_connector));
|
|
|
|
state->num_connector = alloc;
|
|
}
|
|
|
|
if (state->connectors[index].state)
|
|
return state->connectors[index].state;
|
|
|
|
connector_state = connector->funcs->atomic_duplicate_state(connector);
|
|
if (!connector_state)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
drm_connector_get(connector);
|
|
state->connectors[index].state = connector_state;
|
|
state->connectors[index].old_state = connector->state;
|
|
state->connectors[index].new_state = connector_state;
|
|
state->connectors[index].ptr = connector;
|
|
connector_state->state = state;
|
|
|
|
DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d:%s] %p state to %p\n",
|
|
connector->base.id, connector->name,
|
|
connector_state, state);
|
|
|
|
if (connector_state->crtc) {
|
|
struct drm_crtc_state *crtc_state;
|
|
|
|
crtc_state = drm_atomic_get_crtc_state(state,
|
|
connector_state->crtc);
|
|
if (IS_ERR(crtc_state))
|
|
return ERR_CAST(crtc_state);
|
|
}
|
|
|
|
return connector_state;
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_get_connector_state);
|
|
|
|
/**
|
|
* drm_atomic_connector_set_property - set property on connector.
|
|
* @connector: the drm connector to set a property on
|
|
* @state: the state object to update with the new property value
|
|
* @property: the property to set
|
|
* @val: the new property value
|
|
*
|
|
* This function handles generic/core properties and calls out to driver's
|
|
* &drm_connector_funcs.atomic_set_property for driver properties. To ensure
|
|
* consistent behavior you must call this function rather than the driver hook
|
|
* directly.
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, error code on failure
|
|
*/
|
|
static int drm_atomic_connector_set_property(struct drm_connector *connector,
|
|
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) {
|
|
struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
|
|
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->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 == connector->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->writeback_fb_id_property) {
|
|
struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
|
|
int 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 (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 void drm_atomic_connector_print_state(struct drm_printer *p,
|
|
const struct drm_connector_state *state)
|
|
{
|
|
struct drm_connector *connector = state->connector;
|
|
|
|
drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name);
|
|
drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)");
|
|
|
|
if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)
|
|
if (state->writeback_job && state->writeback_job->fb)
|
|
drm_printf(p, "\tfb=%d\n", state->writeback_job->fb->base.id);
|
|
|
|
if (connector->funcs->atomic_print_state)
|
|
connector->funcs->atomic_print_state(p, state);
|
|
}
|
|
|
|
/**
|
|
* drm_atomic_connector_get_property - get property value from connector state
|
|
* @connector: the drm connector to set a property on
|
|
* @state: the state object to get the property value from
|
|
* @property: the property to set
|
|
* @val: return location for the property value
|
|
*
|
|
* This function handles generic/core properties and calls out to driver's
|
|
* &drm_connector_funcs.atomic_get_property for driver properties. To ensure
|
|
* consistent behavior you must call this function rather than the driver hook
|
|
* directly.
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, error code on failure
|
|
*/
|
|
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) {
|
|
*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->scaling_mode_property) {
|
|
*val = state->scaling_mode;
|
|
} else if (property == connector->content_protection_property) {
|
|
*val = state->content_protection;
|
|
} 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 (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;
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
|
|
/*
|
|
* drm_atomic_get_writeback_job - return or allocate a writeback job
|
|
* @conn_state: Connector state to get the job for
|
|
*
|
|
* Writeback jobs have a different lifetime to the atomic state they are
|
|
* associated with. This convenience function takes care of allocating a job
|
|
* if there isn't yet one associated with the connector state, otherwise
|
|
* it just returns the existing job.
|
|
*
|
|
* Returns: The writeback job for the given connector state
|
|
*/
|
|
static struct drm_writeback_job *
|
|
drm_atomic_get_writeback_job(struct drm_connector_state *conn_state)
|
|
{
|
|
WARN_ON(conn_state->connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK);
|
|
|
|
if (!conn_state->writeback_job)
|
|
conn_state->writeback_job =
|
|
kzalloc(sizeof(*conn_state->writeback_job), GFP_KERNEL);
|
|
|
|
return conn_state->writeback_job;
|
|
}
|
|
|
|
/**
|
|
* drm_atomic_set_writeback_fb_for_connector - set writeback framebuffer
|
|
* @conn_state: atomic state object for the connector
|
|
* @fb: fb to use for the connector
|
|
*
|
|
* This is used to set the framebuffer for a writeback connector, which outputs
|
|
* to a buffer instead of an actual physical connector.
|
|
* Changing the assigned framebuffer 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.
|
|
*
|
|
* Note: The only way conn_state can already have an fb set is if the commit
|
|
* sets the property more than once.
|
|
*
|
|
* See also: drm_writeback_connector_init()
|
|
*
|
|
* Returns: 0 on success
|
|
*/
|
|
int drm_atomic_set_writeback_fb_for_connector(
|
|
struct drm_connector_state *conn_state,
|
|
struct drm_framebuffer *fb)
|
|
{
|
|
struct drm_writeback_job *job =
|
|
drm_atomic_get_writeback_job(conn_state);
|
|
if (!job)
|
|
return -ENOMEM;
|
|
|
|
drm_framebuffer_assign(&job->fb, fb);
|
|
|
|
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;
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_set_writeback_fb_for_connector);
|
|
|
|
/**
|
|
* drm_atomic_add_affected_connectors - add connectors for crtc
|
|
* @state: atomic state
|
|
* @crtc: DRM crtc
|
|
*
|
|
* This function walks the current configuration and adds all connectors
|
|
* currently using @crtc to the atomic configuration @state. Note that this
|
|
* function must acquire the connection mutex. This can potentially cause
|
|
* unneeded seralization if the update is just for the planes on one crtc. Hence
|
|
* drivers and helpers should only call this when really needed (e.g. when a
|
|
* full modeset needs to happen due to some change).
|
|
*
|
|
* 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_add_affected_connectors(struct drm_atomic_state *state,
|
|
struct drm_crtc *crtc)
|
|
{
|
|
struct drm_mode_config *config = &state->dev->mode_config;
|
|
struct drm_connector *connector;
|
|
struct drm_connector_state *conn_state;
|
|
struct drm_connector_list_iter conn_iter;
|
|
struct drm_crtc_state *crtc_state;
|
|
int ret;
|
|
|
|
crtc_state = drm_atomic_get_crtc_state(state, crtc);
|
|
if (IS_ERR(crtc_state))
|
|
return PTR_ERR(crtc_state);
|
|
|
|
ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
|
|
if (ret)
|
|
return ret;
|
|
|
|
DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n",
|
|
crtc->base.id, crtc->name, state);
|
|
|
|
/*
|
|
* Changed connectors are already in @state, so only need to look
|
|
* at the connector_mask in crtc_state.
|
|
*/
|
|
drm_connector_list_iter_begin(state->dev, &conn_iter);
|
|
drm_for_each_connector_iter(connector, &conn_iter) {
|
|
if (!(crtc_state->connector_mask & drm_connector_mask(connector)))
|
|
continue;
|
|
|
|
conn_state = drm_atomic_get_connector_state(state, connector);
|
|
if (IS_ERR(conn_state)) {
|
|
drm_connector_list_iter_end(&conn_iter);
|
|
return PTR_ERR(conn_state);
|
|
}
|
|
}
|
|
drm_connector_list_iter_end(&conn_iter);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_add_affected_connectors);
|
|
|
|
/**
|
|
* drm_atomic_add_affected_planes - add planes for crtc
|
|
* @state: atomic state
|
|
* @crtc: DRM crtc
|
|
*
|
|
* This function walks the current configuration and adds all planes
|
|
* currently used by @crtc to the atomic configuration @state. This is useful
|
|
* when an atomic commit also needs to check all currently enabled plane on
|
|
* @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC
|
|
* to avoid special code to force-enable all planes.
|
|
*
|
|
* Since acquiring a plane state will always also acquire the w/w mutex of the
|
|
* current CRTC for that plane (if there is any) adding all the plane states for
|
|
* a CRTC will not reduce parallism of atomic updates.
|
|
*
|
|
* 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_add_affected_planes(struct drm_atomic_state *state,
|
|
struct drm_crtc *crtc)
|
|
{
|
|
struct drm_plane *plane;
|
|
|
|
WARN_ON(!drm_atomic_get_new_crtc_state(state, crtc));
|
|
|
|
DRM_DEBUG_ATOMIC("Adding all current planes for [CRTC:%d:%s] to %p\n",
|
|
crtc->base.id, crtc->name, state);
|
|
|
|
drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) {
|
|
struct drm_plane_state *plane_state =
|
|
drm_atomic_get_plane_state(state, plane);
|
|
|
|
if (IS_ERR(plane_state))
|
|
return PTR_ERR(plane_state);
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_add_affected_planes);
|
|
|
|
/**
|
|
* drm_atomic_check_only - check whether a given config would work
|
|
* @state: atomic configuration to check
|
|
*
|
|
* Note that this function can return -EDEADLK if the driver needed to acquire
|
|
* more locks but encountered a deadlock. The caller must then do the usual w/w
|
|
* backoff dance and restart. All other errors are fatal.
|
|
*
|
|
* Returns:
|
|
* 0 on success, negative error code on failure.
|
|
*/
|
|
int drm_atomic_check_only(struct drm_atomic_state *state)
|
|
{
|
|
struct drm_device *dev = state->dev;
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
struct drm_plane *plane;
|
|
struct drm_plane_state *plane_state;
|
|
struct drm_crtc *crtc;
|
|
struct drm_crtc_state *crtc_state;
|
|
struct drm_connector *conn;
|
|
struct drm_connector_state *conn_state;
|
|
int i, ret = 0;
|
|
|
|
DRM_DEBUG_ATOMIC("checking %p\n", state);
|
|
|
|
for_each_new_plane_in_state(state, plane, plane_state, i) {
|
|
ret = drm_atomic_plane_check(plane, plane_state);
|
|
if (ret) {
|
|
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n",
|
|
plane->base.id, plane->name);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
|
|
ret = drm_atomic_crtc_check(crtc, crtc_state);
|
|
if (ret) {
|
|
DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n",
|
|
crtc->base.id, crtc->name);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
for_each_new_connector_in_state(state, conn, conn_state, i) {
|
|
ret = drm_atomic_connector_check(conn, conn_state);
|
|
if (ret) {
|
|
DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] atomic core check failed\n",
|
|
conn->base.id, conn->name);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (config->funcs->atomic_check) {
|
|
ret = config->funcs->atomic_check(state->dev, state);
|
|
|
|
if (ret) {
|
|
DRM_DEBUG_ATOMIC("atomic driver check for %p failed: %d\n",
|
|
state, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (!state->allow_modeset) {
|
|
for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
|
|
if (drm_atomic_crtc_needs_modeset(crtc_state)) {
|
|
DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n",
|
|
crtc->base.id, crtc->name);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_check_only);
|
|
|
|
/**
|
|
* drm_atomic_commit - commit configuration atomically
|
|
* @state: atomic configuration to check
|
|
*
|
|
* Note that this function can return -EDEADLK if the driver needed to acquire
|
|
* more locks but encountered a deadlock. The caller must then do the usual w/w
|
|
* backoff dance and restart. All other errors are fatal.
|
|
*
|
|
* This function will take its own reference on @state.
|
|
* Callers should always release their reference with drm_atomic_state_put().
|
|
*
|
|
* Returns:
|
|
* 0 on success, negative error code on failure.
|
|
*/
|
|
int drm_atomic_commit(struct drm_atomic_state *state)
|
|
{
|
|
struct drm_mode_config *config = &state->dev->mode_config;
|
|
int ret;
|
|
|
|
ret = drm_atomic_check_only(state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
DRM_DEBUG_ATOMIC("committing %p\n", state);
|
|
|
|
return config->funcs->atomic_commit(state->dev, state, false);
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_commit);
|
|
|
|
/**
|
|
* drm_atomic_nonblocking_commit - atomic nonblocking commit
|
|
* @state: atomic configuration to check
|
|
*
|
|
* Note that this function can return -EDEADLK if the driver needed to acquire
|
|
* more locks but encountered a deadlock. The caller must then do the usual w/w
|
|
* backoff dance and restart. All other errors are fatal.
|
|
*
|
|
* This function will take its own reference on @state.
|
|
* Callers should always release their reference with drm_atomic_state_put().
|
|
*
|
|
* Returns:
|
|
* 0 on success, negative error code on failure.
|
|
*/
|
|
int drm_atomic_nonblocking_commit(struct drm_atomic_state *state)
|
|
{
|
|
struct drm_mode_config *config = &state->dev->mode_config;
|
|
int ret;
|
|
|
|
ret = drm_atomic_check_only(state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
DRM_DEBUG_ATOMIC("committing %p nonblocking\n", state);
|
|
|
|
return config->funcs->atomic_commit(state->dev, state, true);
|
|
}
|
|
EXPORT_SYMBOL(drm_atomic_nonblocking_commit);
|
|
|
|
static void drm_atomic_print_state(const struct drm_atomic_state *state)
|
|
{
|
|
struct drm_printer p = drm_info_printer(state->dev->dev);
|
|
struct drm_plane *plane;
|
|
struct drm_plane_state *plane_state;
|
|
struct drm_crtc *crtc;
|
|
struct drm_crtc_state *crtc_state;
|
|
struct drm_connector *connector;
|
|
struct drm_connector_state *connector_state;
|
|
int i;
|
|
|
|
DRM_DEBUG_ATOMIC("checking %p\n", state);
|
|
|
|
for_each_new_plane_in_state(state, plane, plane_state, i)
|
|
drm_atomic_plane_print_state(&p, plane_state);
|
|
|
|
for_each_new_crtc_in_state(state, crtc, crtc_state, i)
|
|
drm_atomic_crtc_print_state(&p, crtc_state);
|
|
|
|
for_each_new_connector_in_state(state, connector, connector_state, i)
|
|
drm_atomic_connector_print_state(&p, connector_state);
|
|
}
|
|
|
|
static void __drm_state_dump(struct drm_device *dev, struct drm_printer *p,
|
|
bool take_locks)
|
|
{
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
struct drm_plane *plane;
|
|
struct drm_crtc *crtc;
|
|
struct drm_connector *connector;
|
|
struct drm_connector_list_iter conn_iter;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
|
|
return;
|
|
|
|
list_for_each_entry(plane, &config->plane_list, head) {
|
|
if (take_locks)
|
|
drm_modeset_lock(&plane->mutex, NULL);
|
|
drm_atomic_plane_print_state(p, plane->state);
|
|
if (take_locks)
|
|
drm_modeset_unlock(&plane->mutex);
|
|
}
|
|
|
|
list_for_each_entry(crtc, &config->crtc_list, head) {
|
|
if (take_locks)
|
|
drm_modeset_lock(&crtc->mutex, NULL);
|
|
drm_atomic_crtc_print_state(p, crtc->state);
|
|
if (take_locks)
|
|
drm_modeset_unlock(&crtc->mutex);
|
|
}
|
|
|
|
drm_connector_list_iter_begin(dev, &conn_iter);
|
|
if (take_locks)
|
|
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
|
|
drm_for_each_connector_iter(connector, &conn_iter)
|
|
drm_atomic_connector_print_state(p, connector->state);
|
|
if (take_locks)
|
|
drm_modeset_unlock(&dev->mode_config.connection_mutex);
|
|
drm_connector_list_iter_end(&conn_iter);
|
|
}
|
|
|
|
/**
|
|
* drm_state_dump - dump entire device atomic state
|
|
* @dev: the drm device
|
|
* @p: where to print the state to
|
|
*
|
|
* Just for debugging. Drivers might want an option to dump state
|
|
* to dmesg in case of error irq's. (Hint, you probably want to
|
|
* ratelimit this!)
|
|
*
|
|
* The caller must drm_modeset_lock_all(), or if this is called
|
|
* from error irq handler, it should not be enabled by default.
|
|
* (Ie. if you are debugging errors you might not care that this
|
|
* is racey. But calling this without all modeset locks held is
|
|
* not inherently safe.)
|
|
*/
|
|
void drm_state_dump(struct drm_device *dev, struct drm_printer *p)
|
|
{
|
|
__drm_state_dump(dev, p, false);
|
|
}
|
|
EXPORT_SYMBOL(drm_state_dump);
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
static int drm_state_info(struct seq_file *m, void *data)
|
|
{
|
|
struct drm_info_node *node = (struct drm_info_node *) m->private;
|
|
struct drm_device *dev = node->minor->dev;
|
|
struct drm_printer p = drm_seq_file_printer(m);
|
|
|
|
__drm_state_dump(dev, &p, true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* any use in debugfs files to dump individual planes/crtc/etc? */
|
|
static const struct drm_info_list drm_atomic_debugfs_list[] = {
|
|
{"state", drm_state_info, 0},
|
|
};
|
|
|
|
int drm_atomic_debugfs_init(struct drm_minor *minor)
|
|
{
|
|
return drm_debugfs_create_files(drm_atomic_debugfs_list,
|
|
ARRAY_SIZE(drm_atomic_debugfs_list),
|
|
minor->debugfs_root, minor);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* 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_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, 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, 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 reservation_object.
|
|
* 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_writeback_job *job;
|
|
struct drm_out_fence_state *f;
|
|
struct dma_fence *fence;
|
|
s32 __user *fence_ptr;
|
|
|
|
fence_ptr = get_out_fence_for_connector(state, conn);
|
|
if (!fence_ptr)
|
|
continue;
|
|
|
|
job = drm_atomic_get_writeback_job(conn_state);
|
|
if (!job)
|
|
return -ENOMEM;
|
|
|
|
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;
|
|
}
|
|
|
|
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 -EINVAL;
|
|
|
|
/* 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) &&
|
|
!dev->mode_config.async_page_flip)
|
|
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;
|
|
|
|
drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
|
|
|
|
state = drm_atomic_state_alloc(dev);
|
|
if (!state)
|
|
return -ENOMEM;
|
|
|
|
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, 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 (unlikely(drm_debug & 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;
|
|
}
|