| /* |
| * Copyright (C) 2014 Red Hat |
| * Copyright (C) 2014 Intel Corp. |
| * Copyright (C) 2018 Intel Corp. |
| * Copyright (c) 2020, The Linux Foundation. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * Rob Clark <robdclark@gmail.com> |
| * Daniel Vetter <daniel.vetter@ffwll.ch> |
| */ |
| |
| #include <drm/drm_atomic_uapi.h> |
| #include <drm/drm_atomic.h> |
| #include <drm/drm_framebuffer.h> |
| #include <drm/drm_print.h> |
| #include <drm/drm_drv.h> |
| #include <drm/drm_writeback.h> |
| #include <drm/drm_vblank.h> |
| |
| #include <linux/dma-fence.h> |
| #include <linux/uaccess.h> |
| #include <linux/sync_file.h> |
| #include <linux/file.h> |
| |
| #include "drm_crtc_internal.h" |
| |
| /** |
| * DOC: overview |
| * |
| * This file contains the marshalling and demarshalling glue for the atomic UAPI |
| * in all its forms: The monster ATOMIC IOCTL itself, code for GET_PROPERTY and |
| * SET_PROPERTY IOCTLs. Plus interface functions for compatibility helpers and |
| * drivers which have special needs to construct their own atomic updates, e.g. |
| * for load detect or similar. |
| */ |
| |
| /** |
| * drm_atomic_set_mode_for_crtc - set mode for CRTC |
| * @state: the CRTC whose incoming state to update |
| * @mode: kernel-internal mode to use for the CRTC, or NULL to disable |
| * |
| * Set a mode (originating from the kernel) on the desired CRTC state and update |
| * the enable property. |
| * |
| * RETURNS: |
| * Zero on success, error code on failure. Cannot return -EDEADLK. |
| */ |
| int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, |
| const struct drm_display_mode *mode) |
| { |
| struct drm_crtc *crtc = state->crtc; |
| struct drm_mode_modeinfo umode; |
| |
| /* Early return for no change. */ |
| if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) |
| return 0; |
| |
| drm_property_blob_put(state->mode_blob); |
| state->mode_blob = NULL; |
| |
| if (mode) { |
| struct drm_property_blob *blob; |
| |
| drm_mode_convert_to_umode(&umode, mode); |
| blob = drm_property_create_blob(crtc->dev, |
| sizeof(umode), &umode); |
| if (IS_ERR(blob)) |
| return PTR_ERR(blob); |
| |
| drm_mode_copy(&state->mode, mode); |
| |
| state->mode_blob = blob; |
| state->enable = true; |
| drm_dbg_atomic(crtc->dev, |
| "Set [MODE:%s] for [CRTC:%d:%s] state %p\n", |
| mode->name, crtc->base.id, crtc->name, state); |
| } else { |
| memset(&state->mode, 0, sizeof(state->mode)); |
| state->enable = false; |
| drm_dbg_atomic(crtc->dev, |
| "Set [NOMODE] for [CRTC:%d:%s] state %p\n", |
| crtc->base.id, crtc->name, state); |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); |
| |
| /** |
| * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC |
| * @state: the CRTC whose incoming state to update |
| * @blob: pointer to blob property to use for mode |
| * |
| * Set a mode (originating from a blob property) on the desired CRTC state. |
| * This function will take a reference on the blob property for the CRTC state, |
| * and release the reference held on the state's existing mode property, if any |
| * was set. |
| * |
| * RETURNS: |
| * Zero on success, error code on failure. Cannot return -EDEADLK. |
| */ |
| int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, |
| struct drm_property_blob *blob) |
| { |
| struct drm_crtc *crtc = state->crtc; |
| |
| if (blob == state->mode_blob) |
| return 0; |
| |
| drm_property_blob_put(state->mode_blob); |
| state->mode_blob = NULL; |
| |
| memset(&state->mode, 0, sizeof(state->mode)); |
| |
| if (blob) { |
| int ret; |
| |
| if (blob->length != sizeof(struct drm_mode_modeinfo)) { |
| drm_dbg_atomic(crtc->dev, |
| "[CRTC:%d:%s] bad mode blob length: %zu\n", |
| crtc->base.id, crtc->name, |
| blob->length); |
| return -EINVAL; |
| } |
| |
| ret = drm_mode_convert_umode(crtc->dev, |
| &state->mode, blob->data); |
| if (ret) { |
| drm_dbg_atomic(crtc->dev, |
| "[CRTC:%d:%s] invalid mode (%s, %pe): " DRM_MODE_FMT "\n", |
| crtc->base.id, crtc->name, |
| drm_get_mode_status_name(state->mode.status), |
| ERR_PTR(ret), DRM_MODE_ARG(&state->mode)); |
| return -EINVAL; |
| } |
| |
| state->mode_blob = drm_property_blob_get(blob); |
| state->enable = true; |
| drm_dbg_atomic(crtc->dev, |
| "Set [MODE:%s] for [CRTC:%d:%s] state %p\n", |
| state->mode.name, crtc->base.id, crtc->name, |
| state); |
| } else { |
| state->enable = false; |
| drm_dbg_atomic(crtc->dev, |
| "Set [NOMODE] for [CRTC:%d:%s] state %p\n", |
| crtc->base.id, crtc->name, state); |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); |
| |
| /** |
| * drm_atomic_set_crtc_for_plane - set CRTC for plane |
| * @plane_state: the plane whose incoming state to update |
| * @crtc: CRTC to use for the plane |
| * |
| * Changing the assigned CRTC for a plane requires us to grab the lock and state |
| * for the new CRTC, as needed. This function takes care of all these details |
| * besides updating the pointer in the state object itself. |
| * |
| * Returns: |
| * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK |
| * then the w/w mutex code has detected a deadlock and the entire atomic |
| * sequence must be restarted. All other errors are fatal. |
| */ |
| int |
| drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, |
| struct drm_crtc *crtc) |
| { |
| struct drm_plane *plane = plane_state->plane; |
| struct drm_crtc_state *crtc_state; |
| /* Nothing to do for same crtc*/ |
| if (plane_state->crtc == crtc) |
| return 0; |
| if (plane_state->crtc) { |
| crtc_state = drm_atomic_get_crtc_state(plane_state->state, |
| plane_state->crtc); |
| if (WARN_ON(IS_ERR(crtc_state))) |
| return PTR_ERR(crtc_state); |
| |
| crtc_state->plane_mask &= ~drm_plane_mask(plane); |
| } |
| |
| plane_state->crtc = crtc; |
| |
| if (crtc) { |
| crtc_state = drm_atomic_get_crtc_state(plane_state->state, |
| crtc); |
| if (IS_ERR(crtc_state)) |
| return PTR_ERR(crtc_state); |
| crtc_state->plane_mask |= drm_plane_mask(plane); |
| } |
| |
| if (crtc) |
| drm_dbg_atomic(plane->dev, |
| "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_dbg_atomic(plane->dev, |
| "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_dbg_atomic(plane->dev, |
| "Set [FB:%d] for [PLANE:%d:%s] state %p\n", |
| fb->base.id, plane->base.id, plane->name, |
| plane_state); |
| else |
| drm_dbg_atomic(plane->dev, |
| "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_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_dbg_atomic(connector->dev, |
| "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_dbg_atomic(connector->dev, |
| "Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n", |
| connector->base.id, connector->name, |
| conn_state); |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); |
| |
| static void set_out_fence_for_crtc(struct drm_atomic_state *state, |
| struct drm_crtc *crtc, s32 __user *fence_ptr) |
| { |
| state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr; |
| } |
| |
| static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state, |
| struct drm_crtc *crtc) |
| { |
| s32 __user *fence_ptr; |
| |
| fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr; |
| state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL; |
| |
| return fence_ptr; |
| } |
| |
| static int set_out_fence_for_connector(struct drm_atomic_state *state, |
| struct drm_connector *connector, |
| s32 __user *fence_ptr) |
| { |
| unsigned int index = drm_connector_index(connector); |
| |
| if (!fence_ptr) |
| return 0; |
| |
| if (put_user(-1, fence_ptr)) |
| return -EFAULT; |
| |
| state->connectors[index].out_fence_ptr = fence_ptr; |
| |
| return 0; |
| } |
| |
| static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state, |
| struct drm_connector *connector) |
| { |
| unsigned int index = drm_connector_index(connector); |
| s32 __user *fence_ptr; |
| |
| fence_ptr = state->connectors[index].out_fence_ptr; |
| state->connectors[index].out_fence_ptr = NULL; |
| |
| return fence_ptr; |
| } |
| |
| static int drm_atomic_crtc_set_property(struct drm_crtc *crtc, |
| struct drm_crtc_state *state, struct drm_property *property, |
| uint64_t val) |
| { |
| struct drm_device *dev = crtc->dev; |
| struct drm_mode_config *config = &dev->mode_config; |
| bool replaced = false; |
| int ret; |
| |
| if (property == config->prop_active) |
| state->active = val; |
| else if (property == config->prop_mode_id) { |
| struct drm_property_blob *mode = |
| drm_property_lookup_blob(dev, val); |
| ret = drm_atomic_set_mode_prop_for_crtc(state, mode); |
| drm_property_blob_put(mode); |
| return ret; |
| } else if (property == config->prop_vrr_enabled) { |
| state->vrr_enabled = val; |
| } else if (property == config->degamma_lut_property) { |
| ret = drm_property_replace_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_property_replace_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_property_replace_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 (property == crtc->scaling_filter_property) { |
| state->scaling_filter = val; |
| } else if (crtc->funcs->atomic_set_property) { |
| return crtc->funcs->atomic_set_property(crtc, state, property, val); |
| } else { |
| drm_dbg_atomic(crtc->dev, |
| "[CRTC:%d:%s] unknown property [PROP:%d:%s]\n", |
| crtc->base.id, crtc->name, |
| property->base.id, property->name); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| drm_atomic_crtc_get_property(struct drm_crtc *crtc, |
| const struct drm_crtc_state *state, |
| struct drm_property *property, uint64_t *val) |
| { |
| struct drm_device *dev = crtc->dev; |
| struct drm_mode_config *config = &dev->mode_config; |
| |
| if (property == config->prop_active) |
| *val = drm_atomic_crtc_effectively_active(state); |
| else if (property == config->prop_mode_id) |
| *val = (state->mode_blob) ? state->mode_blob->base.id : 0; |
| else if (property == config->prop_vrr_enabled) |
| *val = state->vrr_enabled; |
| else if (property == config->degamma_lut_property) |
| *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; |
| else if (property == config->ctm_property) |
| *val = (state->ctm) ? state->ctm->base.id : 0; |
| else if (property == config->gamma_lut_property) |
| *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; |
| else if (property == config->prop_out_fence_ptr) |
| *val = 0; |
| else if (property == crtc->scaling_filter_property) |
| *val = state->scaling_filter; |
| else if (crtc->funcs->atomic_get_property) |
| return crtc->funcs->atomic_get_property(crtc, state, property, val); |
| else { |
| drm_dbg_atomic(dev, |
| "[CRTC:%d:%s] unknown property [PROP:%d:%s]\n", |
| crtc->base.id, crtc->name, |
| property->base.id, property->name); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int drm_atomic_plane_set_property(struct drm_plane *plane, |
| struct drm_plane_state *state, struct drm_file *file_priv, |
| struct drm_property *property, uint64_t val) |
| { |
| struct drm_device *dev = plane->dev; |
| struct drm_mode_config *config = &dev->mode_config; |
| bool replaced = false; |
| int ret; |
| |
| if (property == config->prop_fb_id) { |
| struct drm_framebuffer *fb; |
| |
| fb = drm_framebuffer_lookup(dev, file_priv, val); |
| drm_atomic_set_fb_for_plane(state, fb); |
| if (fb) |
| drm_framebuffer_put(fb); |
| } else if (property == config->prop_in_fence_fd) { |
| if (state->fence) |
| return -EINVAL; |
| |
| if (U642I64(val) == -1) |
| return 0; |
| |
| state->fence = sync_file_get_fence(val); |
| if (!state->fence) |
| return -EINVAL; |
| |
| } else if (property == config->prop_crtc_id) { |
| struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val); |
| |
| if (val && !crtc) { |
| drm_dbg_atomic(dev, |
| "[PROP:%d:%s] cannot find CRTC with ID %llu\n", |
| property->base.id, property->name, val); |
| return -EACCES; |
| } |
| return drm_atomic_set_crtc_for_plane(state, crtc); |
| } else if (property == config->prop_crtc_x) { |
| state->crtc_x = U642I64(val); |
| } else if (property == config->prop_crtc_y) { |
| state->crtc_y = U642I64(val); |
| } else if (property == config->prop_crtc_w) { |
| state->crtc_w = val; |
| } else if (property == config->prop_crtc_h) { |
| state->crtc_h = val; |
| } else if (property == config->prop_src_x) { |
| state->src_x = val; |
| } else if (property == config->prop_src_y) { |
| state->src_y = val; |
| } else if (property == config->prop_src_w) { |
| state->src_w = val; |
| } else if (property == config->prop_src_h) { |
| state->src_h = val; |
| } else if (property == plane->alpha_property) { |
| state->alpha = val; |
| } else if (property == plane->blend_mode_property) { |
| state->pixel_blend_mode = val; |
| } else if (property == plane->rotation_property) { |
| if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) { |
| drm_dbg_atomic(plane->dev, |
| "[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n", |
| plane->base.id, plane->name, val); |
| return -EINVAL; |
| } |
| state->rotation = val; |
| } else if (property == plane->zpos_property) { |
| state->zpos = val; |
| } else if (property == plane->color_encoding_property) { |
| state->color_encoding = val; |
| } else if (property == plane->color_range_property) { |
| state->color_range = val; |
| } else if (property == config->prop_fb_damage_clips) { |
| ret = drm_property_replace_blob_from_id(dev, |
| &state->fb_damage_clips, |
| val, |
| -1, |
| sizeof(struct drm_rect), |
| &replaced); |
| return ret; |
| } else if (property == plane->scaling_filter_property) { |
| state->scaling_filter = val; |
| } else if (plane->funcs->atomic_set_property) { |
| return plane->funcs->atomic_set_property(plane, state, |
| property, val); |
| } else if (property == plane->hotspot_x_property) { |
| if (plane->type != DRM_PLANE_TYPE_CURSOR) { |
| drm_dbg_atomic(plane->dev, |
| "[PLANE:%d:%s] is not a cursor plane: 0x%llx\n", |
| plane->base.id, plane->name, val); |
| return -EINVAL; |
| } |
| state->hotspot_x = val; |
| } else if (property == plane->hotspot_y_property) { |
| if (plane->type != DRM_PLANE_TYPE_CURSOR) { |
| drm_dbg_atomic(plane->dev, |
| "[PLANE:%d:%s] is not a cursor plane: 0x%llx\n", |
| plane->base.id, plane->name, val); |
| return -EINVAL; |
| } |
| state->hotspot_y = val; |
| } else { |
| drm_dbg_atomic(plane->dev, |
| "[PLANE:%d:%s] unknown property [PROP:%d:%s]\n", |
| plane->base.id, plane->name, |
| property->base.id, property->name); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| drm_atomic_plane_get_property(struct drm_plane *plane, |
| const struct drm_plane_state *state, |
| struct drm_property *property, uint64_t *val) |
| { |
| struct drm_device *dev = plane->dev; |
| struct drm_mode_config *config = &dev->mode_config; |
| |
| if (property == config->prop_fb_id) { |
| *val = (state->fb) ? state->fb->base.id : 0; |
| } else if (property == config->prop_in_fence_fd) { |
| *val = -1; |
| } else if (property == config->prop_crtc_id) { |
| *val = (state->crtc) ? state->crtc->base.id : 0; |
| } else if (property == config->prop_crtc_x) { |
| *val = I642U64(state->crtc_x); |
| } else if (property == config->prop_crtc_y) { |
| *val = I642U64(state->crtc_y); |
| } else if (property == config->prop_crtc_w) { |
| *val = state->crtc_w; |
| } else if (property == config->prop_crtc_h) { |
| *val = state->crtc_h; |
| } else if (property == config->prop_src_x) { |
| *val = state->src_x; |
| } else if (property == config->prop_src_y) { |
| *val = state->src_y; |
| } else if (property == config->prop_src_w) { |
| *val = state->src_w; |
| } else if (property == config->prop_src_h) { |
| *val = state->src_h; |
| } else if (property == plane->alpha_property) { |
| *val = state->alpha; |
| } else if (property == plane->blend_mode_property) { |
| *val = state->pixel_blend_mode; |
| } else if (property == plane->rotation_property) { |
| *val = state->rotation; |
| } else if (property == plane->zpos_property) { |
| *val = state->zpos; |
| } else if (property == plane->color_encoding_property) { |
| *val = state->color_encoding; |
| } else if (property == plane->color_range_property) { |
| *val = state->color_range; |
| } else if (property == config->prop_fb_damage_clips) { |
| *val = (state->fb_damage_clips) ? |
| state->fb_damage_clips->base.id : 0; |
| } else if (property == plane->scaling_filter_property) { |
| *val = state->scaling_filter; |
| } else if (plane->funcs->atomic_get_property) { |
| return plane->funcs->atomic_get_property(plane, state, property, val); |
| } else if (property == plane->hotspot_x_property) { |
| *val = state->hotspot_x; |
| } else if (property == plane->hotspot_y_property) { |
| *val = state->hotspot_y; |
| } else { |
| drm_dbg_atomic(dev, |
| "[PLANE:%d:%s] unknown property [PROP:%d:%s]\n", |
| plane->base.id, plane->name, |
| property->base.id, property->name); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int drm_atomic_set_writeback_fb_for_connector( |
| struct drm_connector_state *conn_state, |
| struct drm_framebuffer *fb) |
| { |
| int ret; |
| struct drm_connector *conn = conn_state->connector; |
| |
| ret = drm_writeback_set_fb(conn_state, fb); |
| if (ret < 0) |
| return ret; |
| |
| if (fb) |
| drm_dbg_atomic(conn->dev, |
| "Set [FB:%d] for connector state %p\n", |
| fb->base.id, conn_state); |
| else |
| drm_dbg_atomic(conn->dev, |
| "Set [NOFB] for connector state %p\n", |
| conn_state); |
| |
| return 0; |
| } |
| |
| static int drm_atomic_connector_set_property(struct drm_connector *connector, |
| struct drm_connector_state *state, struct drm_file *file_priv, |
| struct drm_property *property, uint64_t val) |
| { |
| struct drm_device *dev = connector->dev; |
| struct drm_mode_config *config = &dev->mode_config; |
| bool replaced = false; |
| int ret; |
| |
| if (property == config->prop_crtc_id) { |
| struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val); |
| |
| if (val && !crtc) { |
| drm_dbg_atomic(dev, |
| "[PROP:%d:%s] cannot find CRTC with ID %llu\n", |
| property->base.id, property->name, val); |
| return -EACCES; |
| } |
| return drm_atomic_set_crtc_for_connector(state, crtc); |
| } else if (property == config->dpms_property) { |
| /* setting DPMS property requires special handling, which |
| * is done in legacy setprop path for us. Disallow (for |
| * now?) atomic writes to DPMS property: |
| */ |
| drm_dbg_atomic(dev, |
| "legacy [PROP:%d:%s] can only be set via legacy uAPI\n", |
| property->base.id, property->name); |
| return -EINVAL; |
| } else if (property == config->tv_select_subconnector_property) { |
| state->tv.select_subconnector = val; |
| } else if (property == config->tv_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->legacy_tv_mode_property) { |
| state->tv.legacy_mode = 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 accidentally breaking the display when it restores the |
| * state. |
| */ |
| if (state->link_status != DRM_LINK_STATUS_GOOD) |
| state->link_status = val; |
| } else if (property == config->hdr_output_metadata_property) { |
| ret = drm_property_replace_blob_from_id(dev, |
| &state->hdr_output_metadata, |
| val, |
| sizeof(struct hdr_output_metadata), -1, |
| &replaced); |
| return ret; |
| } else if (property == config->aspect_ratio_property) { |
| state->picture_aspect_ratio = val; |
| } else if (property == config->content_type_property) { |
| state->content_type = val; |
| } else if (property == connector->scaling_mode_property) { |
| state->scaling_mode = val; |
| } else if (property == config->content_protection_property) { |
| if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) { |
| drm_dbg_kms(dev, "only drivers can set CP Enabled\n"); |
| return -EINVAL; |
| } |
| state->content_protection = val; |
| } else if (property == config->hdcp_content_type_property) { |
| state->hdcp_content_type = val; |
| } else if (property == connector->colorspace_property) { |
| state->colorspace = val; |
| } else if (property == config->writeback_fb_id_property) { |
| struct drm_framebuffer *fb; |
| int ret; |
| |
| fb = drm_framebuffer_lookup(dev, file_priv, val); |
| ret = drm_atomic_set_writeback_fb_for_connector(state, fb); |
| if (fb) |
| drm_framebuffer_put(fb); |
| return ret; |
| } else if (property == config->writeback_out_fence_ptr_property) { |
| s32 __user *fence_ptr = u64_to_user_ptr(val); |
| |
| return set_out_fence_for_connector(state->state, connector, |
| fence_ptr); |
| } else if (property == connector->max_bpc_property) { |
| state->max_requested_bpc = val; |
| } else if (property == connector->privacy_screen_sw_state_property) { |
| state->privacy_screen_sw_state = val; |
| } else if (property == connector->broadcast_rgb_property) { |
| state->hdmi.broadcast_rgb = val; |
| } else if (connector->funcs->atomic_set_property) { |
| return connector->funcs->atomic_set_property(connector, |
| state, property, val); |
| } else { |
| drm_dbg_atomic(connector->dev, |
| "[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]\n", |
| connector->base.id, connector->name, |
| property->base.id, property->name); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| drm_atomic_connector_get_property(struct drm_connector *connector, |
| const struct drm_connector_state *state, |
| struct drm_property *property, uint64_t *val) |
| { |
| struct drm_device *dev = connector->dev; |
| struct drm_mode_config *config = &dev->mode_config; |
| |
| if (property == config->prop_crtc_id) { |
| *val = (state->crtc) ? state->crtc->base.id : 0; |
| } else if (property == config->dpms_property) { |
| if (state->crtc && state->crtc->state->self_refresh_active) |
| *val = DRM_MODE_DPMS_ON; |
| else |
| *val = connector->dpms; |
| } else if (property == config->tv_select_subconnector_property) { |
| *val = state->tv.select_subconnector; |
| } else if (property == config->tv_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->legacy_tv_mode_property) { |
| *val = state->tv.legacy_mode; |
| } else if (property == config->tv_mode_property) { |
| *val = state->tv.mode; |
| } else if (property == config->tv_brightness_property) { |
| *val = state->tv.brightness; |
| } else if (property == config->tv_contrast_property) { |
| *val = state->tv.contrast; |
| } else if (property == config->tv_flicker_reduction_property) { |
| *val = state->tv.flicker_reduction; |
| } else if (property == config->tv_overscan_property) { |
| *val = state->tv.overscan; |
| } else if (property == config->tv_saturation_property) { |
| *val = state->tv.saturation; |
| } else if (property == config->tv_hue_property) { |
| *val = state->tv.hue; |
| } else if (property == config->link_status_property) { |
| *val = state->link_status; |
| } else if (property == config->aspect_ratio_property) { |
| *val = state->picture_aspect_ratio; |
| } else if (property == config->content_type_property) { |
| *val = state->content_type; |
| } else if (property == connector->colorspace_property) { |
| *val = state->colorspace; |
| } else if (property == connector->scaling_mode_property) { |
| *val = state->scaling_mode; |
| } else if (property == config->hdr_output_metadata_property) { |
| *val = state->hdr_output_metadata ? |
| state->hdr_output_metadata->base.id : 0; |
| } else if (property == config->content_protection_property) { |
| *val = state->content_protection; |
| } else if (property == config->hdcp_content_type_property) { |
| *val = state->hdcp_content_type; |
| } else if (property == config->writeback_fb_id_property) { |
| /* Writeback framebuffer is one-shot, write and forget */ |
| *val = 0; |
| } else if (property == config->writeback_out_fence_ptr_property) { |
| *val = 0; |
| } else if (property == connector->max_bpc_property) { |
| *val = state->max_requested_bpc; |
| } else if (property == connector->privacy_screen_sw_state_property) { |
| *val = state->privacy_screen_sw_state; |
| } else if (property == connector->broadcast_rgb_property) { |
| *val = state->hdmi.broadcast_rgb; |
| } else if (connector->funcs->atomic_get_property) { |
| return connector->funcs->atomic_get_property(connector, |
| state, property, val); |
| } else { |
| drm_dbg_atomic(dev, |
| "[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]\n", |
| connector->base.id, connector->name, |
| property->base.id, property->name); |
| 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: |
| drm_dbg_atomic(dev, "[OBJECT:%d] has no properties\n", obj->id); |
| ret = -EINVAL; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| /* |
| * The big monster ioctl |
| */ |
| |
| static struct drm_pending_vblank_event *create_vblank_event( |
| struct drm_crtc *crtc, uint64_t user_data) |
| { |
| struct drm_pending_vblank_event *e = NULL; |
| |
| e = kzalloc(sizeof *e, GFP_KERNEL); |
| if (!e) |
| return NULL; |
| |
| e->event.base.type = DRM_EVENT_FLIP_COMPLETE; |
| e->event.base.length = sizeof(e->event); |
| e->event.vbl.crtc_id = crtc->base.id; |
| e->event.vbl.user_data = user_data; |
| |
| return e; |
| } |
| |
| int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state, |
| struct drm_connector *connector, |
| int mode) |
| { |
| struct drm_connector *tmp_connector; |
| struct drm_connector_state *new_conn_state; |
| struct drm_crtc *crtc; |
| struct drm_crtc_state *crtc_state; |
| int i, ret, old_mode = connector->dpms; |
| bool active = false; |
| |
| ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex, |
| state->acquire_ctx); |
| if (ret) |
| return ret; |
| |
| if (mode != DRM_MODE_DPMS_ON) |
| mode = DRM_MODE_DPMS_OFF; |
| connector->dpms = mode; |
| |
| crtc = connector->state->crtc; |
| if (!crtc) |
| goto out; |
| ret = drm_atomic_add_affected_connectors(state, crtc); |
| if (ret) |
| goto out; |
| |
| crtc_state = drm_atomic_get_crtc_state(state, crtc); |
| if (IS_ERR(crtc_state)) { |
| ret = PTR_ERR(crtc_state); |
| goto out; |
| } |
| |
| for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) { |
| if (new_conn_state->crtc != crtc) |
| continue; |
| if (tmp_connector->dpms == DRM_MODE_DPMS_ON) { |
| active = true; |
| break; |
| } |
| } |
| |
| crtc_state->active = active; |
| ret = drm_atomic_commit(state); |
| out: |
| if (ret != 0) |
| connector->dpms = old_mode; |
| return ret; |
| } |
| |
| static int drm_atomic_check_prop_changes(int ret, uint64_t old_val, uint64_t prop_value, |
| struct drm_property *prop) |
| { |
| if (ret != 0 || old_val != prop_value) { |
| drm_dbg_atomic(prop->dev, |
| "[PROP:%d:%s] No prop can be changed during async flip\n", |
| prop->base.id, prop->name); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| int drm_atomic_set_property(struct drm_atomic_state *state, |
| struct drm_file *file_priv, |
| struct drm_mode_object *obj, |
| struct drm_property *prop, |
| u64 prop_value, |
| bool async_flip) |
| { |
| struct drm_mode_object *ref; |
| u64 old_val; |
| 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; |
| } |
| |
| if (async_flip) { |
| ret = drm_atomic_connector_get_property(connector, connector_state, |
| prop, &old_val); |
| ret = drm_atomic_check_prop_changes(ret, old_val, prop_value, prop); |
| break; |
| } |
| |
| ret = drm_atomic_connector_set_property(connector, |
| connector_state, file_priv, |
| prop, prop_value); |
| break; |
| } |
| case DRM_MODE_OBJECT_CRTC: { |
| struct drm_crtc *crtc = obj_to_crtc(obj); |
| struct drm_crtc_state *crtc_state; |
| |
| crtc_state = drm_atomic_get_crtc_state(state, crtc); |
| if (IS_ERR(crtc_state)) { |
| ret = PTR_ERR(crtc_state); |
| break; |
| } |
| |
| if (async_flip) { |
| ret = drm_atomic_crtc_get_property(crtc, crtc_state, |
| prop, &old_val); |
| ret = drm_atomic_check_prop_changes(ret, old_val, prop_value, prop); |
| 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; |
| struct drm_mode_config *config = &plane->dev->mode_config; |
| |
| plane_state = drm_atomic_get_plane_state(state, plane); |
| if (IS_ERR(plane_state)) { |
| ret = PTR_ERR(plane_state); |
| break; |
| } |
| |
| if (async_flip && prop != config->prop_fb_id) { |
| ret = drm_atomic_plane_get_property(plane, plane_state, |
| prop, &old_val); |
| ret = drm_atomic_check_prop_changes(ret, old_val, prop_value, prop); |
| break; |
| } |
| |
| if (async_flip && plane_state->plane->type != DRM_PLANE_TYPE_PRIMARY) { |
| drm_dbg_atomic(prop->dev, |
| "[OBJECT:%d] Only primary planes can be changed during async flip\n", |
| obj->id); |
| ret = -EINVAL; |
| break; |
| } |
| |
| ret = drm_atomic_plane_set_property(plane, |
| plane_state, file_priv, |
| prop, prop_value); |
| break; |
| } |
| default: |
| drm_dbg_atomic(prop->dev, "[OBJECT:%d] has no properties\n", obj->id); |
| 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 transferred 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. This is usually tracked in &struct |
| * dma_resv which can also contain mandatory kernel fences. 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 extract the implicit fence using drm_gem_plane_helper_prepare_fb(), |
| * to make sure there's consistent behaviour between drivers in precedence |
| * of implicit vs. explicit fencing. |
| * |
| * "OUT_FENCE_PTR”: |
| * Use this property to pass a file descriptor pointer to DRM. Once the |
| * Atomic Commit request call returns OUT_FENCE_PTR will be filled with |
| * the file descriptor number of a Sync File. This Sync File contains the |
| * CRTC fence that will be signaled when all framebuffers present on the |
| * Atomic Commit * request for that given CRTC are scanned out on the |
| * screen. |
| * |
| * The Atomic Commit request fails if a invalid pointer is passed. If the |
| * Atomic Commit request fails for any other reason the out fence fd |
| * returned will be -1. On a Atomic Commit with the |
| * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1. |
| * |
| * Note that out-fences don't have a special interface to drivers and are |
| * internally represented by a &struct drm_pending_vblank_event in struct |
| * &drm_crtc_state, which is also used by the nonblocking atomic commit |
| * helpers and for the DRM event handling for existing userspace. |
| */ |
| |
| struct drm_out_fence_state { |
| s32 __user *out_fence_ptr; |
| struct sync_file *sync_file; |
| int fd; |
| }; |
| |
| static int setup_out_fence(struct drm_out_fence_state *fence_state, |
| struct dma_fence *fence) |
| { |
| fence_state->fd = get_unused_fd_flags(O_CLOEXEC); |
| if (fence_state->fd < 0) |
| return fence_state->fd; |
| |
| if (put_user(fence_state->fd, fence_state->out_fence_ptr)) |
| return -EFAULT; |
| |
| fence_state->sync_file = sync_file_create(fence); |
| if (!fence_state->sync_file) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| static int prepare_signaling(struct drm_device *dev, |
| struct drm_atomic_state *state, |
| struct drm_mode_atomic *arg, |
| struct drm_file *file_priv, |
| struct drm_out_fence_state **fence_state, |
| unsigned int *num_fences) |
| { |
| struct drm_crtc *crtc; |
| struct drm_crtc_state *crtc_state; |
| struct drm_connector *conn; |
| struct drm_connector_state *conn_state; |
| int i, c = 0, ret; |
| |
| if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) |
| return 0; |
| |
| for_each_new_crtc_in_state(state, crtc, crtc_state, i) { |
| s32 __user *fence_ptr; |
| |
| fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc); |
| |
| if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) { |
| struct drm_pending_vblank_event *e; |
| |
| e = create_vblank_event(crtc, arg->user_data); |
| if (!e) |
| return -ENOMEM; |
| |
| crtc_state->event = e; |
| } |
| |
| if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
| struct drm_pending_vblank_event *e = crtc_state->event; |
| |
| if (!file_priv) |
| continue; |
| |
| ret = drm_event_reserve_init(dev, file_priv, &e->base, |
| &e->event.base); |
| if (ret) { |
| kfree(e); |
| crtc_state->event = NULL; |
| return ret; |
| } |
| } |
| |
| if (fence_ptr) { |
| struct dma_fence *fence; |
| struct drm_out_fence_state *f; |
| |
| f = krealloc(*fence_state, sizeof(**fence_state) * |
| (*num_fences + 1), GFP_KERNEL); |
| if (!f) |
| return -ENOMEM; |
| |
| memset(&f[*num_fences], 0, sizeof(*f)); |
| |
| f[*num_fences].out_fence_ptr = fence_ptr; |
| *fence_state = f; |
| |
| fence = drm_crtc_create_fence(crtc); |
| if (!fence) |
| return -ENOMEM; |
| |
| ret = setup_out_fence(&f[(*num_fences)++], fence); |
| if (ret) { |
| dma_fence_put(fence); |
| return ret; |
| } |
| |
| crtc_state->event->base.fence = fence; |
| } |
| |
| c++; |
| } |
| |
| for_each_new_connector_in_state(state, conn, conn_state, i) { |
| struct drm_writeback_connector *wb_conn; |
| struct drm_out_fence_state *f; |
| struct dma_fence *fence; |
| s32 __user *fence_ptr; |
| |
| if (!conn_state->writeback_job) |
| continue; |
| |
| fence_ptr = get_out_fence_for_connector(state, conn); |
| if (!fence_ptr) |
| continue; |
| |
| f = krealloc(*fence_state, sizeof(**fence_state) * |
| (*num_fences + 1), GFP_KERNEL); |
| if (!f) |
| return -ENOMEM; |
| |
| memset(&f[*num_fences], 0, sizeof(*f)); |
| |
| f[*num_fences].out_fence_ptr = fence_ptr; |
| *fence_state = f; |
| |
| wb_conn = drm_connector_to_writeback(conn); |
| fence = drm_writeback_get_out_fence(wb_conn); |
| if (!fence) |
| return -ENOMEM; |
| |
| ret = setup_out_fence(&f[(*num_fences)++], fence); |
| if (ret) { |
| dma_fence_put(fence); |
| return ret; |
| } |
| |
| conn_state->writeback_job->out_fence = fence; |
| } |
| |
| /* |
| * Having this flag means user mode pends on event which will never |
| * reach due to lack of at least one CRTC for signaling |
| */ |
| if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) { |
| drm_dbg_atomic(dev, "need at least one CRTC for 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_dbg_atomic(dev, "Couldn't clear out_fence_ptr\n"); |
| } |
| |
| kfree(fence_state); |
| } |
| |
| static void |
| set_async_flip(struct drm_atomic_state *state) |
| { |
| struct drm_crtc *crtc; |
| struct drm_crtc_state *crtc_state; |
| int i; |
| |
| for_each_new_crtc_in_state(state, crtc, crtc_state, i) { |
| crtc_state->async_flip = true; |
| } |
| } |
| |
| 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; |
| bool async_flip = false; |
| |
| /* disallow for drivers not supporting atomic: */ |
| if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) |
| return -EOPNOTSUPP; |
| |
| /* disallow for userspace that has not enabled atomic cap (even |
| * though this may be a bit overkill, since legacy userspace |
| * wouldn't know how to call this ioctl) |
| */ |
| if (!file_priv->atomic) { |
| drm_dbg_atomic(dev, |
| "commit failed: atomic cap not enabled\n"); |
| return -EINVAL; |
| } |
| |
| if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) { |
| drm_dbg_atomic(dev, "commit failed: invalid flag\n"); |
| return -EINVAL; |
| } |
| |
| if (arg->reserved) { |
| drm_dbg_atomic(dev, "commit failed: reserved field set\n"); |
| return -EINVAL; |
| } |
| |
| if (arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) { |
| if (!dev->mode_config.async_page_flip) { |
| drm_dbg_atomic(dev, |
| "commit failed: DRM_MODE_PAGE_FLIP_ASYNC not supported\n"); |
| return -EINVAL; |
| } |
| |
| async_flip = true; |
| } |
| |
| /* 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)) { |
| drm_dbg_atomic(dev, |
| "commit failed: page-flip event requested with test-only commit\n"); |
| return -EINVAL; |
| } |
| |
| state = drm_atomic_state_alloc(dev); |
| if (!state) |
| return -ENOMEM; |
| |
| drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
| state->acquire_ctx = &ctx; |
| state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); |
| |
| retry: |
| copied_objs = 0; |
| copied_props = 0; |
| fence_state = NULL; |
| num_fences = 0; |
| |
| for (i = 0; i < arg->count_objs; i++) { |
| uint32_t obj_id, count_props; |
| struct drm_mode_object *obj; |
| |
| if (get_user(obj_id, objs_ptr + copied_objs)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| |
| obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY); |
| if (!obj) { |
| drm_dbg_atomic(dev, "cannot find object ID %d", obj_id); |
| ret = -ENOENT; |
| goto out; |
| } |
| |
| if (!obj->properties) { |
| drm_dbg_atomic(dev, "[OBJECT:%d] has no properties", obj_id); |
| 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_dbg_atomic(dev, |
| "[OBJECT:%d] cannot find property ID %d", |
| obj_id, prop_id); |
| drm_mode_object_put(obj); |
| ret = -ENOENT; |
| goto out; |
| } |
| |
| if (copy_from_user(&prop_value, |
| prop_values_ptr + copied_props, |
| sizeof(prop_value))) { |
| drm_mode_object_put(obj); |
| ret = -EFAULT; |
| goto out; |
| } |
| |
| ret = drm_atomic_set_property(state, file_priv, obj, |
| prop, prop_value, async_flip); |
| 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_PAGE_FLIP_ASYNC) |
| set_async_flip(state); |
| |
| 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 { |
| 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; |
| } |