/* * Copyright © 2008-2011 Kristian Høgsberg * Copyright © 2011 Intel Corporation * Copyright © 2017, 2018 Collabora, Ltd. * Copyright © 2017, 2018 General Electric Company * Copyright (c) 2018 DisplayLink (UK) Ltd. * * 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 (including the * next paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS * 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. */ #include "config.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "drm-internal.h" #include "shared/helpers.h" #include "shared/timespec-util.h" #include "shared/string-helpers.h" #include "shared/weston-drm-fourcc.h" #include "pixman-renderer.h" #include "pixel-formats.h" #include "libbacklight.h" #include "libinput-seat.h" #include "launcher-util.h" #include "vaapi-recorder.h" #include "presentation-time-server-protocol.h" #include "linux-dmabuf.h" #include "linux-dmabuf-unstable-v1-server-protocol.h" #include "linux-explicit-synchronization.h" static const char default_seat[] = "seat0"; static void drm_backend_create_faked_zpos(struct drm_backend *b) { struct drm_device *device = b->drm; struct drm_plane *plane; uint64_t zpos = 0ULL; uint64_t zpos_min_primary; uint64_t zpos_min_overlay; uint64_t zpos_min_cursor; zpos_min_primary = zpos; wl_list_for_each(plane, &device->plane_list, link) { /* if the property is there, bail out sooner */ if (plane->props[WDRM_PLANE_ZPOS].prop_id != 0) return; if (plane->type != WDRM_PLANE_TYPE_PRIMARY) continue; zpos++; } zpos_min_overlay = zpos; wl_list_for_each(plane, &device->plane_list, link) { if (plane->type != WDRM_PLANE_TYPE_OVERLAY) continue; zpos++; } zpos_min_cursor = zpos; wl_list_for_each(plane, &device->plane_list, link) { if (plane->type != WDRM_PLANE_TYPE_CURSOR) continue; zpos++; } drm_debug(b, "[drm-backend] zpos property not found. " "Using invented immutable zpos values:\n"); /* assume that invented zpos values are immutable */ wl_list_for_each(plane, &device->plane_list, link) { if (plane->type == WDRM_PLANE_TYPE_PRIMARY) { plane->zpos_min = zpos_min_primary; plane->zpos_max = zpos_min_primary; } else if (plane->type == WDRM_PLANE_TYPE_OVERLAY) { plane->zpos_min = zpos_min_overlay; plane->zpos_max = zpos_min_overlay; } else if (plane->type == WDRM_PLANE_TYPE_CURSOR) { plane->zpos_min = zpos_min_cursor; plane->zpos_max = zpos_min_cursor; } drm_debug(b, "\t[plane] %s plane %d, zpos_min %"PRIu64", " "zpos_max %"PRIu64"\n", drm_output_get_plane_type_name(plane), plane->plane_id, plane->zpos_min, plane->zpos_max); } } static int pageflip_timeout(void *data) { /* * Our timer just went off, that means we're not receiving drm * page flip events anymore for that output. Let's gracefully exit * weston with a return value so devs can debug what's going on. */ struct drm_output *output = data; struct weston_compositor *compositor = output->base.compositor; weston_log("Pageflip timeout reached on output %s, your " "driver is probably buggy! Exiting.\n", output->base.name); weston_compositor_exit_with_code(compositor, EXIT_FAILURE); return 0; } /* Creates the pageflip timer. Note that it isn't armed by default */ static int drm_output_pageflip_timer_create(struct drm_output *output) { struct wl_event_loop *loop = NULL; struct weston_compositor *ec = output->base.compositor; loop = wl_display_get_event_loop(ec->wl_display); assert(loop); output->pageflip_timer = wl_event_loop_add_timer(loop, pageflip_timeout, output); if (output->pageflip_timer == NULL) { weston_log("creating drm pageflip timer failed: %s\n", strerror(errno)); return -1; } return 0; } /** * Returns true if the plane can be used on the given output for its current * repaint cycle. */ bool drm_plane_is_available(struct drm_plane *plane, struct drm_output *output) { assert(plane->state_cur); if (output->virtual) return false; /* The plane still has a request not yet completed by the kernel. */ if (!plane->state_cur->complete) return false; /* The plane is still active on another output. */ if (plane->state_cur->output && plane->state_cur->output != output) return false; /* Check whether the plane can be used with this CRTC; possible_crtcs * is a bitmask of CRTC indices (pipe), rather than CRTC object ID. */ return !!(plane->possible_crtcs & (1 << output->crtc->pipe)); } struct drm_crtc * drm_crtc_find(struct drm_device *device, uint32_t crtc_id) { struct drm_crtc *crtc; wl_list_for_each(crtc, &device->crtc_list, link) { if (crtc->crtc_id == crtc_id) return crtc; } return NULL; } struct drm_head * drm_head_find_by_connector(struct drm_backend *backend, uint32_t connector_id) { struct weston_head *base; struct drm_head *head; wl_list_for_each(base, &backend->compositor->head_list, compositor_link) { head = to_drm_head(base); if (!head) continue; if (head->connector.connector_id == connector_id) return head; } return NULL; } static struct drm_writeback * drm_writeback_find_by_connector(struct drm_backend *backend, uint32_t connector_id) { struct drm_writeback *writeback; wl_list_for_each(writeback, &backend->drm->writeback_connector_list, link) { if (writeback->connector.connector_id == connector_id) return writeback; } return NULL; } /** * Get output state to disable output * * Returns a pointer to an output_state object which can be used to disable * an output (e.g. DPMS off). * * @param pending_state The pending state object owning this update * @param output The output to disable * @returns A drm_output_state to disable the output */ static struct drm_output_state * drm_output_get_disable_state(struct drm_pending_state *pending_state, struct drm_output *output) { struct drm_output_state *output_state; output_state = drm_output_state_duplicate(output->state_cur, pending_state, DRM_OUTPUT_STATE_CLEAR_PLANES); output_state->dpms = WESTON_DPMS_OFF; output_state->protection = WESTON_HDCP_DISABLE; return output_state; } static int drm_output_apply_mode(struct drm_output *output); /** * Mark a drm_output_state (the output's last state) as complete. This handles * any post-completion actions such as updating the repaint timer, disabling the * output, and finally freeing the state. */ void drm_output_update_complete(struct drm_output *output, uint32_t flags, unsigned int sec, unsigned int usec) { struct drm_device *device = output->device; struct drm_plane_state *ps; struct timespec ts; /* Stop the pageflip timer instead of rearming it here */ if (output->pageflip_timer) wl_event_source_timer_update(output->pageflip_timer, 0); wl_list_for_each(ps, &output->state_cur->plane_list, link) ps->complete = true; drm_output_state_free(output->state_last); output->state_last = NULL; if (output->destroy_pending) { output->destroy_pending = false; output->disable_pending = false; output->dpms_off_pending = false; output->mode_switch_pending = false; drm_output_destroy(&output->base); return; } else if (output->disable_pending) { output->disable_pending = false; output->dpms_off_pending = false; output->mode_switch_pending = false; weston_output_disable(&output->base); return; } else if (output->dpms_off_pending) { struct drm_pending_state *pending = drm_pending_state_alloc(device); output->dpms_off_pending = false; output->mode_switch_pending = false; drm_output_get_disable_state(pending, output); drm_pending_state_apply_sync(pending); } else if (output->mode_switch_pending) { output->mode_switch_pending = false; drm_output_apply_mode(output); } if (output->state_cur->dpms == WESTON_DPMS_OFF && output->base.repaint_status != REPAINT_AWAITING_COMPLETION) { /* DPMS can happen to us either in the middle of a repaint * cycle (when we have painted fresh content, only to throw it * away for DPMS off), or at any other random point. If the * latter is true, then we cannot go through finish_frame, * because the repaint machinery does not expect this. */ return; } ts.tv_sec = sec; ts.tv_nsec = usec * 1000; if (output->state_cur->dpms != WESTON_DPMS_OFF) weston_output_finish_frame(&output->base, &ts, flags); else weston_output_finish_frame(&output->base, NULL, WP_PRESENTATION_FEEDBACK_INVALID); /* We can't call this from frame_notify, because the output's * repaint needed flag is cleared just after that */ if (output->recorder) weston_output_schedule_repaint(&output->base); } static struct drm_fb * drm_output_render_pixman(struct drm_output_state *state, pixman_region32_t *damage) { struct drm_output *output = state->output; struct weston_compositor *ec = output->base.compositor; output->current_image ^= 1; pixman_renderer_output_set_buffer(&output->base, output->image[output->current_image]); pixman_renderer_output_set_hw_extra_damage(&output->base, &output->previous_damage); ec->renderer->repaint_output(&output->base, damage); pixman_region32_copy(&output->previous_damage, damage); return drm_fb_ref(output->dumb[output->current_image]); } void drm_output_render(struct drm_output_state *state, pixman_region32_t *damage) { struct drm_output *output = state->output; struct drm_device *device = output->device; struct weston_compositor *c = output->base.compositor; struct drm_plane_state *scanout_state; struct drm_plane *scanout_plane = output->scanout_plane; struct drm_property_info *damage_info = &scanout_plane->props[WDRM_PLANE_FB_DAMAGE_CLIPS]; struct drm_backend *b = device->backend; struct drm_fb *fb; pixman_region32_t scanout_damage; pixman_box32_t *rects; int n_rects; /* If we already have a client buffer promoted to scanout, then we don't * want to render. */ scanout_state = drm_output_state_get_plane(state, scanout_plane); if (scanout_state->fb) return; /* * If we don't have any damage on the primary plane, and we already * have a renderer buffer active, we can reuse it; else we pass * the damaged region into the renderer to re-render the affected * area. But, we still have to call the renderer anyway if any screen * capture is pending, otherwise the capture will not complete. */ if (!pixman_region32_not_empty(damage) && wl_list_empty(&output->base.frame_signal.listener_list) && scanout_plane->state_cur->fb && (scanout_plane->state_cur->fb->type == BUFFER_GBM_SURFACE || scanout_plane->state_cur->fb->type == BUFFER_PIXMAN_DUMB)) { fb = drm_fb_ref(scanout_plane->state_cur->fb); } else if (b->use_pixman) { fb = drm_output_render_pixman(state, damage); } else { fb = drm_output_render_gl(state, damage); } if (!fb) { drm_plane_state_put_back(scanout_state); return; } scanout_state->fb = fb; scanout_state->output = output; scanout_state->src_x = 0; scanout_state->src_y = 0; scanout_state->src_w = fb->width << 16; scanout_state->src_h = fb->height << 16; scanout_state->dest_x = 0; scanout_state->dest_y = 0; scanout_state->dest_w = output->base.current_mode->width; scanout_state->dest_h = output->base.current_mode->height; pixman_region32_subtract(&c->primary_plane.damage, &c->primary_plane.damage, damage); /* Don't bother calculating plane damage if the plane doesn't support it */ if (damage_info->prop_id == 0) return; pixman_region32_init(&scanout_damage); pixman_region32_copy(&scanout_damage, damage); pixman_region32_translate(&scanout_damage, -output->base.x, -output->base.y); weston_transformed_region(output->base.width, output->base.height, output->base.transform, output->base.current_scale, &scanout_damage, &scanout_damage); assert(scanout_state->damage_blob_id == 0); rects = pixman_region32_rectangles(&scanout_damage, &n_rects); /* * If this function fails, the blob id should still be 0. * This tells the kernel there is no damage information, which means * that it will consider the whole plane damaged. While this may * affect efficiency, it should still produce correct results. */ drmModeCreatePropertyBlob(device->drm.fd, rects, sizeof(*rects) * n_rects, &scanout_state->damage_blob_id); pixman_region32_fini(&scanout_damage); } static int drm_output_repaint(struct weston_output *output_base, pixman_region32_t *damage) { struct drm_output *output = to_drm_output(output_base); struct drm_output_state *state = NULL; struct drm_plane_state *scanout_state; struct drm_pending_state *pending_state; struct drm_device *device; assert(output); assert(!output->virtual); device = output->device; pending_state = device->repaint_data; if (output->disable_pending || output->destroy_pending) goto err; assert(!output->state_last); /* If planes have been disabled in the core, we might not have * hit assign_planes at all, so might not have valid output state * here. */ state = drm_pending_state_get_output(pending_state, output); if (!state) state = drm_output_state_duplicate(output->state_cur, pending_state, DRM_OUTPUT_STATE_CLEAR_PLANES); state->dpms = WESTON_DPMS_ON; if (output_base->allow_protection) state->protection = output_base->desired_protection; else state->protection = WESTON_HDCP_DISABLE; if (drm_output_ensure_hdr_output_metadata_blob(output) < 0) goto err; drm_output_render(state, damage); scanout_state = drm_output_state_get_plane(state, output->scanout_plane); if (!scanout_state || !scanout_state->fb) goto err; return 0; err: drm_output_state_free(state); return -1; } /* Determine the type of vblank synchronization to use for the output. * * The pipe parameter indicates which CRTC is in use. Knowing this, we * can determine which vblank sequence type to use for it. Traditional * cards had only two CRTCs, with CRTC 0 using no special flags, and * CRTC 1 using DRM_VBLANK_SECONDARY. The first bit of the pipe * parameter indicates this. * * Bits 1-5 of the pipe parameter are 5 bit wide pipe number between * 0-31. If this is non-zero it indicates we're dealing with a * multi-gpu situation and we need to calculate the vblank sync * using DRM_BLANK_HIGH_CRTC_MASK. */ static unsigned int drm_waitvblank_pipe(struct drm_crtc *crtc) { if (crtc->pipe > 1) return (crtc->pipe << DRM_VBLANK_HIGH_CRTC_SHIFT) & DRM_VBLANK_HIGH_CRTC_MASK; else if (crtc->pipe > 0) return DRM_VBLANK_SECONDARY; else return 0; } static int drm_output_start_repaint_loop(struct weston_output *output_base) { struct drm_output *output = to_drm_output(output_base); struct drm_pending_state *pending_state; struct drm_plane *scanout_plane = output->scanout_plane; struct drm_device *device = output->device; struct drm_backend *backend = device->backend; struct weston_compositor *compositor = backend->compositor; struct timespec ts, tnow; struct timespec vbl2now; int64_t refresh_nsec; int ret; drmVBlank vbl = { .request.type = DRM_VBLANK_RELATIVE, .request.sequence = 0, .request.signal = 0, }; if (output->disable_pending || output->destroy_pending) return 0; if (!scanout_plane->state_cur->fb) { /* We can't page flip if there's no mode set */ goto finish_frame; } /* Need to smash all state in from scratch; current timings might not * be what we want, page flip might not work, etc. */ if (device->state_invalid) goto finish_frame; assert(scanout_plane->state_cur->output == output); /* Try to get current msc and timestamp via instant query */ vbl.request.type |= drm_waitvblank_pipe(output->crtc); ret = drmWaitVBlank(device->drm.fd, &vbl); /* Error ret or zero timestamp means failure to get valid timestamp */ if ((ret == 0) && (vbl.reply.tval_sec > 0 || vbl.reply.tval_usec > 0)) { ts.tv_sec = vbl.reply.tval_sec; ts.tv_nsec = vbl.reply.tval_usec * 1000; /* Valid timestamp for most recent vblank - not stale? * Stale ts could happen on Linux 3.17+, so make sure it * is not older than 1 refresh duration since now. */ weston_compositor_read_presentation_clock(compositor, &tnow); timespec_sub(&vbl2now, &tnow, &ts); refresh_nsec = millihz_to_nsec(output->base.current_mode->refresh); if (timespec_to_nsec(&vbl2now) < refresh_nsec) { drm_output_update_msc(output, vbl.reply.sequence); weston_output_finish_frame(output_base, &ts, WP_PRESENTATION_FEEDBACK_INVALID); return 0; } } /* Immediate query didn't provide valid timestamp. * Use pageflip fallback. */ assert(!output->page_flip_pending); assert(!output->state_last); pending_state = drm_pending_state_alloc(device); drm_output_state_duplicate(output->state_cur, pending_state, DRM_OUTPUT_STATE_PRESERVE_PLANES); ret = drm_pending_state_apply(pending_state); if (ret != 0) { weston_log("applying repaint-start state failed: %s\n", strerror(errno)); if (ret == -EACCES || ret == -EBUSY) return ret; goto finish_frame; } return 0; finish_frame: /* if we cannot page-flip, immediately finish frame */ weston_output_finish_frame(output_base, NULL, WP_PRESENTATION_FEEDBACK_INVALID); return 0; } /** * Begin a new repaint cycle * * Called by the core compositor at the beginning of a repaint cycle. Creates * a new pending_state structure to own any output state created by individual * output repaint functions until the repaint is flushed or cancelled. */ static void drm_repaint_begin(struct weston_compositor *compositor) { struct drm_backend *b = to_drm_backend(compositor); struct drm_device *device = b->drm; struct drm_pending_state *pending_state; pending_state = drm_pending_state_alloc(device); device->repaint_data = pending_state; if (weston_log_scope_is_enabled(b->debug)) { char *dbg = weston_compositor_print_scene_graph(compositor); drm_debug(b, "[repaint] Beginning repaint; pending_state %p\n", device->repaint_data); drm_debug(b, "%s", dbg); free(dbg); } } /** * Flush a repaint set * * Called by the core compositor when a repaint cycle has been completed * and should be flushed. Frees the pending state, transitioning ownership * of the output state from the pending state, to the update itself. When * the update completes (see drm_output_update_complete), the output * state will be freed. */ static int drm_repaint_flush(struct weston_compositor *compositor) { struct drm_backend *b = to_drm_backend(compositor); struct drm_device *device = b->drm; struct drm_pending_state *pending_state = device->repaint_data; int ret; ret = drm_pending_state_apply(pending_state); if (ret != 0) weston_log("repaint-flush failed: %s\n", strerror(errno)); drm_debug(b, "[repaint] flushed pending_state %p\n", pending_state); device->repaint_data = NULL; return (ret == -EACCES || ret == -EBUSY) ? ret : 0; } /** * Cancel a repaint set * * Called by the core compositor when a repaint has finished, so the data * held across the repaint cycle should be discarded. */ static void drm_repaint_cancel(struct weston_compositor *compositor) { struct drm_backend *b = to_drm_backend(compositor); struct drm_device *device = b->drm; struct drm_pending_state *pending_state = device->repaint_data; drm_pending_state_free(pending_state); drm_debug(b, "[repaint] cancel pending_state %p\n", pending_state); device->repaint_data = NULL; } static int drm_output_init_pixman(struct drm_output *output, struct drm_backend *b); static void drm_output_fini_pixman(struct drm_output *output); static int drm_output_switch_mode(struct weston_output *output_base, struct weston_mode *mode) { struct drm_output *output = to_drm_output(output_base); struct drm_mode *drm_mode; assert(output); drm_mode = drm_output_choose_mode(output, mode); if (!drm_mode) { weston_log("%s: invalid resolution %dx%d\n", output_base->name, mode->width, mode->height); return -1; } if (&drm_mode->base == output->base.current_mode) return 0; output->base.current_mode->flags = 0; output->base.current_mode = &drm_mode->base; output->base.current_mode->flags = WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED; if (output->page_flip_pending || output->atomic_complete_pending) { output->mode_switch_pending = true; return 0; } return drm_output_apply_mode(output); } static int drm_output_apply_mode(struct drm_output *output) { struct drm_device *device = output->device; struct drm_backend *b = device->backend; /* XXX: This drops our current buffer too early, before we've started * displaying it. Ideally this should be much more atomic and * integrated with a full repaint cycle, rather than doing a * sledgehammer modeswitch first, and only later showing new * content. */ device->state_invalid = true; if (b->use_pixman) { drm_output_fini_pixman(output); if (drm_output_init_pixman(output, b) < 0) { weston_log("failed to init output pixman state with " "new mode\n"); return -1; } } else { drm_output_fini_egl(output); if (drm_output_init_egl(output, b) < 0) { weston_log("failed to init output egl state with " "new mode"); return -1; } } return 0; } static int init_pixman(struct drm_backend *b) { return pixman_renderer_init(b->compositor); } /** * Create a drm_plane for a hardware plane * * Creates one drm_plane structure for a hardware plane, and initialises its * properties and formats. * * This function does not add the plane to the list of usable planes in Weston * itself; the caller is responsible for this. * * Call drm_plane_destroy to clean up the plane. * * @sa drm_output_find_special_plane * @param device DRM device * @param kplane DRM plane to create */ static struct drm_plane * drm_plane_create(struct drm_device *device, const drmModePlane *kplane) { struct drm_backend *b = device->backend; struct weston_compositor *compositor = b->compositor; struct drm_plane *plane, *tmp; drmModeObjectProperties *props; uint64_t *zpos_range_values; plane = zalloc(sizeof(*plane)); if (!plane) { weston_log("%s: out of memory\n", __func__); return NULL; } plane->device = device; plane->state_cur = drm_plane_state_alloc(NULL, plane); plane->state_cur->complete = true; plane->possible_crtcs = kplane->possible_crtcs; plane->plane_id = kplane->plane_id; weston_drm_format_array_init(&plane->formats); props = drmModeObjectGetProperties(device->drm.fd, kplane->plane_id, DRM_MODE_OBJECT_PLANE); if (!props) { weston_log("couldn't get plane properties\n"); goto err; } drm_property_info_populate(device, plane_props, plane->props, WDRM_PLANE__COUNT, props); plane->type = drm_property_get_value(&plane->props[WDRM_PLANE_TYPE], props, WDRM_PLANE_TYPE__COUNT); zpos_range_values = drm_property_get_range_values(&plane->props[WDRM_PLANE_ZPOS], props); if (zpos_range_values) { plane->zpos_min = zpos_range_values[0]; plane->zpos_max = zpos_range_values[1]; } else { plane->zpos_min = DRM_PLANE_ZPOS_INVALID_PLANE; plane->zpos_max = DRM_PLANE_ZPOS_INVALID_PLANE; } if (drm_plane_populate_formats(plane, kplane, props, device->fb_modifiers) < 0) { drmModeFreeObjectProperties(props); goto err; } drmModeFreeObjectProperties(props); if (plane->type == WDRM_PLANE_TYPE__COUNT) goto err_props; weston_plane_init(&plane->base, compositor, 0, 0); wl_list_for_each(tmp, &device->plane_list, link) { if (tmp->zpos_max < plane->zpos_max) { wl_list_insert(tmp->link.prev, &plane->link); break; } } if (plane->link.next == NULL) wl_list_insert(device->plane_list.prev, &plane->link); return plane; err_props: drm_property_info_free(plane->props, WDRM_PLANE__COUNT); err: weston_drm_format_array_fini(&plane->formats); drm_plane_state_free(plane->state_cur, true); free(plane); return NULL; } /** * Find, or create, a special-purpose plane * * @param device DRM device * @param output Output to use for plane * @param type Type of plane */ static struct drm_plane * drm_output_find_special_plane(struct drm_device *device, struct drm_output *output, enum wdrm_plane_type type) { struct drm_backend *b = device->backend; struct drm_plane *plane; wl_list_for_each(plane, &device->plane_list, link) { struct weston_output *base; bool found_elsewhere = false; if (plane->type != type) continue; if (!drm_plane_is_available(plane, output)) continue; /* On some platforms, primary/cursor planes can roam * between different CRTCs, so make sure we don't claim the * same plane for two outputs. */ wl_list_for_each(base, &b->compositor->output_list, link) { struct drm_output *tmp = to_drm_output(base); if (!tmp) continue; if (tmp->cursor_plane == plane || tmp->scanout_plane == plane) { found_elsewhere = true; break; } } if (found_elsewhere) continue; plane->possible_crtcs = (1 << output->crtc->pipe); return plane; } return NULL; } /** * Destroy one DRM plane * * Destroy a DRM plane, removing it from screen and releasing its retained * buffers in the process. The counterpart to drm_plane_create. * * @param plane Plane to deallocate (will be freed) */ static void drm_plane_destroy(struct drm_plane *plane) { struct drm_device *device = plane->device; if (plane->type == WDRM_PLANE_TYPE_OVERLAY) drmModeSetPlane(device->drm.fd, plane->plane_id, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); drm_plane_state_free(plane->state_cur, true); drm_property_info_free(plane->props, WDRM_PLANE__COUNT); weston_plane_release(&plane->base); weston_drm_format_array_fini(&plane->formats); wl_list_remove(&plane->link); free(plane); } /** * Initialise sprites (overlay planes) * * Walk the list of provided DRM planes, and add overlay planes. * * Call destroy_sprites to free these planes. * * @param device DRM device */ static void create_sprites(struct drm_device *device) { struct drm_backend *b = device->backend; drmModePlaneRes *kplane_res; drmModePlane *kplane; struct drm_plane *drm_plane; uint32_t i; uint32_t next_plane_idx = 0; kplane_res = drmModeGetPlaneResources(device->drm.fd); if (!kplane_res) { weston_log("failed to get plane resources: %s\n", strerror(errno)); return; } for (i = 0; i < kplane_res->count_planes; i++) { kplane = drmModeGetPlane(device->drm.fd, kplane_res->planes[i]); if (!kplane) continue; drm_plane = drm_plane_create(device, kplane); drmModeFreePlane(kplane); if (!drm_plane) continue; if (drm_plane->type == WDRM_PLANE_TYPE_OVERLAY) weston_compositor_stack_plane(b->compositor, &drm_plane->base, &b->compositor->primary_plane); } wl_list_for_each (drm_plane, &device->plane_list, link) drm_plane->plane_idx = next_plane_idx++; drmModeFreePlaneResources(kplane_res); } /** * Clean up sprites (overlay planes) * * The counterpart to create_sprites. * * @param device DRM device */ static void destroy_sprites(struct drm_device *device) { struct drm_plane *plane, *next; wl_list_for_each_safe(plane, next, &device->plane_list, link) drm_plane_destroy(plane); } /* returns a value between 0-255 range, where higher is brighter */ static uint32_t drm_get_backlight(struct drm_head *head) { long brightness, max_brightness, norm; brightness = backlight_get_brightness(head->backlight); max_brightness = backlight_get_max_brightness(head->backlight); /* convert it on a scale of 0 to 255 */ norm = (brightness * 255)/(max_brightness); return (uint32_t) norm; } /* values accepted are between 0-255 range */ static void drm_set_backlight(struct weston_output *output_base, uint32_t value) { struct drm_output *output = to_drm_output(output_base); struct drm_head *head; long max_brightness, new_brightness; if (value > 255) return; wl_list_for_each(head, &output->base.head_list, base.output_link) { if (!head->backlight) return; max_brightness = backlight_get_max_brightness(head->backlight); /* get denormalized value */ new_brightness = (value * max_brightness) / 255; backlight_set_brightness(head->backlight, new_brightness); } } static void drm_output_init_backlight(struct drm_output *output) { struct weston_head *base; struct drm_head *head; output->base.set_backlight = NULL; wl_list_for_each(base, &output->base.head_list, output_link) { head = to_drm_head(base); if (head->backlight) { weston_log("Initialized backlight for head '%s', device %s\n", head->base.name, head->backlight->path); if (!output->base.set_backlight) { output->base.set_backlight = drm_set_backlight; output->base.backlight_current = drm_get_backlight(head); } } } } /** * Power output on or off * * The DPMS/power level of an output is used to switch it on or off. This * is DRM's hook for doing so, which can called either as part of repaint, * or independently of the repaint loop. * * If we are called as part of repaint, we simply set the relevant bit in * state and return. * * This function is never called on a virtual output. */ static void drm_set_dpms(struct weston_output *output_base, enum dpms_enum level) { struct drm_output *output = to_drm_output(output_base); struct drm_device *device = output->device; struct drm_pending_state *pending_state = device->repaint_data; struct drm_output_state *state; int ret; assert(output); assert(!output->virtual); if (output->state_cur->dpms == level) return; /* If we're being called during the repaint loop, then this is * simple: discard any previously-generated state, and create a new * state where we disable everything. When we come to flush, this * will be applied. * * However, we need to be careful: we can be called whilst another * output is in its repaint cycle (pending_state exists), but our * output still has an incomplete state application outstanding. * In that case, we need to wait until that completes. */ if (pending_state && !output->state_last) { /* The repaint loop already sets DPMS on; we don't need to * explicitly set it on here, as it will already happen * whilst applying the repaint state. */ if (level == WESTON_DPMS_ON) return; state = drm_pending_state_get_output(pending_state, output); if (state) drm_output_state_free(state); state = drm_output_get_disable_state(pending_state, output); return; } /* As we throw everything away when disabling, just send us back through * a repaint cycle. */ if (level == WESTON_DPMS_ON) { if (output->dpms_off_pending) output->dpms_off_pending = false; weston_output_schedule_repaint(output_base); return; } /* If we've already got a request in the pipeline, then we need to * park our DPMS request until that request has quiesced. */ if (output->state_last) { output->dpms_off_pending = true; return; } pending_state = drm_pending_state_alloc(device); drm_output_get_disable_state(pending_state, output); ret = drm_pending_state_apply_sync(pending_state); if (ret != 0) weston_log("drm_set_dpms: couldn't disable output?\n"); } static const char * const connector_type_names[] = { [DRM_MODE_CONNECTOR_Unknown] = "Unknown", [DRM_MODE_CONNECTOR_VGA] = "VGA", [DRM_MODE_CONNECTOR_DVII] = "DVI-I", [DRM_MODE_CONNECTOR_DVID] = "DVI-D", [DRM_MODE_CONNECTOR_DVIA] = "DVI-A", [DRM_MODE_CONNECTOR_Composite] = "Composite", [DRM_MODE_CONNECTOR_SVIDEO] = "SVIDEO", [DRM_MODE_CONNECTOR_LVDS] = "LVDS", [DRM_MODE_CONNECTOR_Component] = "Component", [DRM_MODE_CONNECTOR_9PinDIN] = "DIN", [DRM_MODE_CONNECTOR_DisplayPort] = "DP", [DRM_MODE_CONNECTOR_HDMIA] = "HDMI-A", [DRM_MODE_CONNECTOR_HDMIB] = "HDMI-B", [DRM_MODE_CONNECTOR_TV] = "TV", [DRM_MODE_CONNECTOR_eDP] = "eDP", [DRM_MODE_CONNECTOR_VIRTUAL] = "Virtual", [DRM_MODE_CONNECTOR_DSI] = "DSI", [DRM_MODE_CONNECTOR_DPI] = "DPI", }; /** Create a name given a DRM connector * * \param con The DRM connector whose type and id form the name. * \return A newly allocate string, or NULL on error. Must be free()'d * after use. * * The name does not identify the DRM display device. */ static char * make_connector_name(const drmModeConnector *con) { char *name; const char *type_name = NULL; int ret; if (con->connector_type < ARRAY_LENGTH(connector_type_names)) type_name = connector_type_names[con->connector_type]; if (!type_name) type_name = "UNNAMED"; ret = asprintf(&name, "%s-%d", type_name, con->connector_type_id); if (ret < 0) return NULL; return name; } static int drm_output_init_pixman(struct drm_output *output, struct drm_backend *b) { struct drm_device *device = output->device; int w = output->base.current_mode->width; int h = output->base.current_mode->height; uint32_t format = output->gbm_format; uint32_t pixman_format; unsigned int i; const struct pixman_renderer_output_options options = { .use_shadow = b->use_pixman_shadow, }; switch (format) { case DRM_FORMAT_XRGB8888: pixman_format = PIXMAN_x8r8g8b8; break; case DRM_FORMAT_RGB565: pixman_format = PIXMAN_r5g6b5; break; default: weston_log("Unsupported pixman format 0x%x\n", format); return -1; } /* FIXME error checking */ for (i = 0; i < ARRAY_LENGTH(output->dumb); i++) { output->dumb[i] = drm_fb_create_dumb(device, w, h, format); if (!output->dumb[i]) goto err; output->image[i] = pixman_image_create_bits(pixman_format, w, h, output->dumb[i]->map, output->dumb[i]->strides[0]); if (!output->image[i]) goto err; } if (pixman_renderer_output_create(&output->base, &options) < 0) goto err; weston_log("DRM: output %s %s shadow framebuffer.\n", output->base.name, b->use_pixman_shadow ? "uses" : "does not use"); pixman_region32_init_rect(&output->previous_damage, output->base.x, output->base.y, output->base.width, output->base.height); return 0; err: for (i = 0; i < ARRAY_LENGTH(output->dumb); i++) { if (output->dumb[i]) drm_fb_unref(output->dumb[i]); if (output->image[i]) pixman_image_unref(output->image[i]); output->dumb[i] = NULL; output->image[i] = NULL; } return -1; } static void drm_output_fini_pixman(struct drm_output *output) { struct drm_backend *b = to_drm_backend(output->base.compositor); unsigned int i; /* Destroying the Pixman surface will destroy all our buffers, * regardless of refcount. Ensure we destroy them here. */ if (!b->shutting_down && output->scanout_plane->state_cur->fb && output->scanout_plane->state_cur->fb->type == BUFFER_PIXMAN_DUMB) { drm_plane_reset_state(output->scanout_plane); } pixman_renderer_output_destroy(&output->base); pixman_region32_fini(&output->previous_damage); for (i = 0; i < ARRAY_LENGTH(output->dumb); i++) { pixman_image_unref(output->image[i]); drm_fb_unref(output->dumb[i]); output->dumb[i] = NULL; output->image[i] = NULL; } } static void setup_output_seat_constraint(struct drm_backend *b, struct weston_output *output, const char *s) { if (strcmp(s, "") != 0) { struct weston_pointer *pointer; struct udev_seat *seat; seat = udev_seat_get_named(&b->input, s); if (!seat) return; seat->base.output = output; pointer = weston_seat_get_pointer(&seat->base); if (pointer) weston_pointer_clamp(pointer, &pointer->x, &pointer->y); } } static int drm_output_attach_head(struct weston_output *output_base, struct weston_head *head_base) { struct drm_backend *b = to_drm_backend(output_base->compositor); struct drm_device *device = b->drm; struct drm_head *head = to_drm_head(head_base); if (wl_list_length(&output_base->head_list) >= MAX_CLONED_CONNECTORS) return -1; wl_list_remove(&head->disable_head_link); wl_list_init(&head->disable_head_link); if (!output_base->enabled) return 0; /* XXX: ensure the configuration will work. * This is actually impossible without major infrastructure * work. */ /* Need to go through modeset to add connectors. */ /* XXX: Ideally we'd do this per-output, not globally. */ /* XXX: Doing it globally, what guarantees another output's update * will not clear the flag before this output is updated? */ device->state_invalid = true; weston_output_schedule_repaint(output_base); return 0; } static void drm_output_detach_head(struct weston_output *output_base, struct weston_head *head_base) { struct drm_output *output = to_drm_output(output_base); struct drm_head *head = to_drm_head(head_base); if (!output_base->enabled) return; /* Drop connectors that should no longer be driven on next repaint. */ wl_list_insert(&output->disable_head, &head->disable_head_link); } int parse_gbm_format(const char *s, uint32_t default_value, uint32_t *gbm_format) { const struct pixel_format_info *pinfo; if (s == NULL) { *gbm_format = default_value; return 0; } pinfo = pixel_format_get_info_by_drm_name(s); if (!pinfo) { weston_log("fatal: unrecognized pixel format: %s\n", s); return -1; } /* GBM formats and DRM formats are identical. */ *gbm_format = pinfo->format; return 0; } static int drm_head_read_current_setup(struct drm_head *head, struct drm_device *device) { int drm_fd = device->drm.fd; drmModeConnector *conn = head->connector.conn; drmModeEncoder *encoder; drmModeCrtc *crtc; /* Get the current mode on the crtc that's currently driving * this connector. */ encoder = drmModeGetEncoder(drm_fd, conn->encoder_id); if (encoder != NULL) { head->inherited_crtc_id = encoder->crtc_id; crtc = drmModeGetCrtc(drm_fd, encoder->crtc_id); drmModeFreeEncoder(encoder); if (crtc == NULL) return -1; if (crtc->mode_valid) head->inherited_mode = crtc->mode; drmModeFreeCrtc(crtc); } /* Get the current max_bpc that's currently configured to * this connector. */ head->inherited_max_bpc = drm_property_get_value( &head->connector.props[WDRM_CONNECTOR_MAX_BPC], head->connector.props_drm, 0); return 0; } static void drm_output_set_gbm_format(struct weston_output *base, const char *gbm_format) { struct drm_output *output = to_drm_output(base); if (parse_gbm_format(gbm_format, DRM_FORMAT_INVALID, &output->gbm_format) == -1) output->gbm_format = DRM_FORMAT_INVALID; } static void drm_output_set_seat(struct weston_output *base, const char *seat) { struct drm_output *output = to_drm_output(base); struct drm_backend *b = to_drm_backend(base->compositor); setup_output_seat_constraint(b, &output->base, seat ? seat : ""); } static void drm_output_set_max_bpc(struct weston_output *base, unsigned max_bpc) { struct drm_output *output = to_drm_output(base); assert(output); assert(!output->base.enabled); output->max_bpc = max_bpc; } static int drm_output_init_gamma_size(struct drm_output *output) { struct drm_device *device = output->device; drmModeCrtc *crtc; assert(output->base.compositor); assert(output->crtc); crtc = drmModeGetCrtc(device->drm.fd, output->crtc->crtc_id); if (!crtc) return -1; output->base.gamma_size = crtc->gamma_size; drmModeFreeCrtc(crtc); return 0; } static uint32_t drm_connector_get_possible_crtcs_mask(struct drm_connector *connector) { struct drm_device *device = connector->device; uint32_t possible_crtcs = 0; drmModeConnector *conn = connector->conn; drmModeEncoder *encoder; int i; for (i = 0; i < conn->count_encoders; i++) { encoder = drmModeGetEncoder(device->drm.fd, conn->encoders[i]); if (!encoder) continue; possible_crtcs |= encoder->possible_crtcs; drmModeFreeEncoder(encoder); } return possible_crtcs; } /** Pick a CRTC that might be able to drive all attached connectors * * @param output The output whose attached heads to include. * @return CRTC object to pick, or NULL on failure or not found. */ static struct drm_crtc * drm_output_pick_crtc(struct drm_output *output) { struct drm_device *device = output->device; struct drm_backend *backend = device->backend; struct weston_compositor *compositor = backend->compositor; struct weston_head *base; struct drm_head *head; struct drm_crtc *crtc; struct drm_crtc *best_crtc = NULL; struct drm_crtc *fallback_crtc = NULL; struct drm_crtc *existing_crtc[32]; uint32_t possible_crtcs = 0xffffffff; unsigned n = 0; uint32_t crtc_id; unsigned int i; bool match; /* This algorithm ignores drmModeEncoder::possible_clones restriction, * because it is more often set wrong than not in the kernel. */ /* Accumulate a mask of possible crtcs and find existing routings. */ wl_list_for_each(base, &output->base.head_list, output_link) { head = to_drm_head(base); possible_crtcs &= drm_connector_get_possible_crtcs_mask(&head->connector); crtc_id = head->inherited_crtc_id; if (crtc_id > 0 && n < ARRAY_LENGTH(existing_crtc)) existing_crtc[n++] = drm_crtc_find(device, crtc_id); } /* Find a crtc that could drive each connector individually at least, * and prefer existing routings. */ wl_list_for_each(crtc, &device->crtc_list, link) { /* Could the crtc not drive each connector? */ if (!(possible_crtcs & (1 << crtc->pipe))) continue; /* Is the crtc already in use? */ if (crtc->output) continue; /* Try to preserve the existing CRTC -> connector routing; * it makes initialisation faster, and also since we have a * very dumb picking algorithm, may preserve a better * choice. */ for (i = 0; i < n; i++) { if (existing_crtc[i] == crtc) return crtc; } /* Check if any other head had existing routing to this CRTC. * If they did, this is not the best CRTC as it might be needed * for another output we haven't enabled yet. */ match = false; wl_list_for_each(base, &compositor->head_list, compositor_link) { head = to_drm_head(base); if (!head) continue; if (head->base.output == &output->base) continue; if (weston_head_is_enabled(&head->base)) continue; if (head->inherited_crtc_id == crtc->crtc_id) { match = true; break; } } if (!match) best_crtc = crtc; fallback_crtc = crtc; } if (best_crtc) return best_crtc; if (fallback_crtc) return fallback_crtc; /* Likely possible_crtcs was empty due to asking for clones, * but since the DRM documentation says the kernel lies, let's * pick one crtc anyway. Trial and error is the only way to * be sure if something doesn't work. */ /* First pick any existing assignment. */ for (i = 0; i < n; i++) { crtc = existing_crtc[i]; if (!crtc->output) return crtc; } /* Otherwise pick any available crtc. */ wl_list_for_each(crtc, &device->crtc_list, link) { if (!crtc->output) return crtc; } return NULL; } /** Create an "empty" drm_crtc. It will only set its ID, pipe and props. After * all, it adds the object to the DRM-backend CRTC list. */ static struct drm_crtc * drm_crtc_create(struct drm_device *device, uint32_t crtc_id, uint32_t pipe) { struct drm_crtc *crtc; drmModeObjectPropertiesPtr props; props = drmModeObjectGetProperties(device->drm.fd, crtc_id, DRM_MODE_OBJECT_CRTC); if (!props) { weston_log("failed to get CRTC properties\n"); return NULL; } crtc = zalloc(sizeof(*crtc)); if (!crtc) goto ret; drm_property_info_populate(device, crtc_props, crtc->props_crtc, WDRM_CRTC__COUNT, props); crtc->device = device; crtc->crtc_id = crtc_id; crtc->pipe = pipe; crtc->output = NULL; /* Add it to the last position of the DRM-backend CRTC list */ wl_list_insert(device->crtc_list.prev, &crtc->link); ret: drmModeFreeObjectProperties(props); return crtc; } /** Destroy a drm_crtc object that was created with drm_crtc_create(). It will * also remove it from the DRM-backend CRTC list. */ static void drm_crtc_destroy(struct drm_crtc *crtc) { /* TODO: address the issue below to be able to remove the comment * from the assert. * * https://gitlab.freedesktop.org/wayland/weston/-/issues/421 */ //assert(!crtc->output); wl_list_remove(&crtc->link); drm_property_info_free(crtc->props_crtc, WDRM_CRTC__COUNT); free(crtc); } /** Find all CRTCs of the fd and create drm_crtc objects for them. * * The CRTCs are saved in a list of the drm_backend and will keep there until * the fd gets closed. * * @param device The DRM device structure. * @param resources The DRM resources, it is taken with drmModeGetResources * @return 0 on success (at least one CRTC in the list), -1 on failure. */ static int drm_backend_create_crtc_list(struct drm_device *device, drmModeRes *resources) { struct drm_crtc *crtc, *crtc_tmp; int i; /* Iterate through all CRTCs */ for (i = 0; i < resources->count_crtcs; i++) { /* Let's create an object for the CRTC and add it to the list */ crtc = drm_crtc_create(device, resources->crtcs[i], i); if (!crtc) goto err; } return 0; err: wl_list_for_each_safe(crtc, crtc_tmp, &device->crtc_list, link) drm_crtc_destroy(crtc); return -1; } /** Populates scanout and cursor planes for the output. Also sets the topology * of the planes by adding them to the plane stacking list. */ static int drm_output_init_planes(struct drm_output *output) { struct drm_backend *b = to_drm_backend(output->base.compositor); struct drm_device *device = output->device; output->scanout_plane = drm_output_find_special_plane(device, output, WDRM_PLANE_TYPE_PRIMARY); if (!output->scanout_plane) { weston_log("Failed to find primary plane for output %s\n", output->base.name); return -1; } weston_compositor_stack_plane(b->compositor, &output->scanout_plane->base, &b->compositor->primary_plane); /* Failing to find a cursor plane is not fatal, as we'll fall back * to software cursor. */ output->cursor_plane = drm_output_find_special_plane(device, output, WDRM_PLANE_TYPE_CURSOR); if (output->cursor_plane) weston_compositor_stack_plane(b->compositor, &output->cursor_plane->base, NULL); else device->cursors_are_broken = true; return 0; } /** The opposite of drm_output_init_planes(). First of all it removes the planes * from the plane stacking list. After all it sets the planes of the output as NULL. */ static void drm_output_deinit_planes(struct drm_output *output) { struct drm_backend *b = to_drm_backend(output->base.compositor); struct drm_device *device = output->device; /* If the compositor is already shutting down, the planes have already * been destroyed. */ if (!b->shutting_down) { wl_list_remove(&output->scanout_plane->base.link); wl_list_init(&output->scanout_plane->base.link); if (output->cursor_plane) { wl_list_remove(&output->cursor_plane->base.link); wl_list_init(&output->cursor_plane->base.link); /* Turn off hardware cursor */ drmModeSetCursor(device->drm.fd, output->crtc->crtc_id, 0, 0, 0); } /* With universal planes, the planes are allocated at startup, * freed at shutdown, and live on the plane list in between. * We want the planes to continue to exist and be freed up * for other outputs. */ if (output->cursor_plane) drm_plane_reset_state(output->cursor_plane); if (output->scanout_plane) drm_plane_reset_state(output->scanout_plane); } output->cursor_plane = NULL; output->scanout_plane = NULL; } static struct weston_drm_format_array * get_scanout_formats(struct drm_device *device) { struct weston_compositor *ec = device->backend->compositor; const struct weston_drm_format_array *renderer_formats; struct weston_drm_format_array *scanout_formats, union_planes_formats; struct drm_plane *plane; int ret; /* If we got here it means that dma-buf feedback is supported and that * the renderer has formats/modifiers to expose. */ assert(ec->renderer->get_supported_formats != NULL); renderer_formats = ec->renderer->get_supported_formats(ec); scanout_formats = zalloc(sizeof(*scanout_formats)); if (!scanout_formats) { weston_log("%s: out of memory\n", __func__); return NULL; } weston_drm_format_array_init(&union_planes_formats); weston_drm_format_array_init(scanout_formats); /* Compute the union of the format/modifiers of the KMS planes */ wl_list_for_each(plane, &device->plane_list, link) { /* The scanout formats are used by the dma-buf feedback. But for * now cursor planes do not support dma-buf buffers, only wl_shm * buffers. So we skip cursor planes here. */ if (plane->type == WDRM_PLANE_TYPE_CURSOR) continue; ret = weston_drm_format_array_join(&union_planes_formats, &plane->formats); if (ret < 0) goto err; } /* Compute the intersection between the union of format/modifiers of KMS * planes and the formats supported by the renderer */ ret = weston_drm_format_array_replace(scanout_formats, renderer_formats); if (ret < 0) goto err; ret = weston_drm_format_array_intersect(scanout_formats, &union_planes_formats); if (ret < 0) goto err; weston_drm_format_array_fini(&union_planes_formats); return scanout_formats; err: weston_drm_format_array_fini(&union_planes_formats); weston_drm_format_array_fini(scanout_formats); free(scanout_formats); return NULL; } /** Pick a CRTC and reserve it for the output. * * On failure, the output remains without a CRTC. * * @param output The output with no CRTC associated. * @return 0 on success, -1 on failure. */ static int drm_output_attach_crtc(struct drm_output *output) { output->crtc = drm_output_pick_crtc(output); if (!output->crtc) { weston_log("Output '%s': No available CRTCs.\n", output->base.name); return -1; } /* Reserve the CRTC for the output */ output->crtc->output = output; return 0; } /** Release reservation of the CRTC. * * Make the CRTC free to be reserved and used by another output. * * @param output The output that will release its CRTC. */ static void drm_output_detach_crtc(struct drm_output *output) { struct drm_crtc *crtc = output->crtc; crtc->output = NULL; output->crtc = NULL; } static int drm_output_enable(struct weston_output *base) { struct drm_output *output = to_drm_output(base); struct drm_device *device = output->device; struct drm_backend *b = device->backend; int ret; assert(output); assert(!output->virtual); if (output->gbm_format == DRM_FORMAT_INVALID) { if (output->base.eotf_mode != WESTON_EOTF_MODE_SDR) output->gbm_format = DRM_FORMAT_XRGB2101010; else output->gbm_format = b->gbm_format; } ret = drm_output_attach_crtc(output); if (ret < 0) return -1; ret = drm_output_init_planes(output); if (ret < 0) goto err_crtc; if (drm_output_init_gamma_size(output) < 0) goto err_planes; if (b->pageflip_timeout) drm_output_pageflip_timer_create(output); if (b->use_pixman) { if (drm_output_init_pixman(output, b) < 0) { weston_log("Failed to init output pixman state\n"); goto err_planes; } } else if (drm_output_init_egl(output, b) < 0) { weston_log("Failed to init output gl state\n"); goto err_planes; } drm_output_init_backlight(output); output->base.start_repaint_loop = drm_output_start_repaint_loop; output->base.repaint = drm_output_repaint; output->base.assign_planes = drm_assign_planes; output->base.set_dpms = drm_set_dpms; output->base.switch_mode = drm_output_switch_mode; output->base.set_gamma = drm_output_set_gamma; weston_log("Output %s (crtc %d) video modes:\n", output->base.name, output->crtc->crtc_id); drm_output_print_modes(output); return 0; err_planes: drm_output_deinit_planes(output); err_crtc: drm_output_detach_crtc(output); return -1; } static void drm_output_deinit(struct weston_output *base) { struct drm_output *output = to_drm_output(base); struct drm_backend *b = to_drm_backend(base->compositor); struct drm_device *device = b->drm; struct drm_pending_state *pending; if (!b->shutting_down) { pending = drm_pending_state_alloc(device); drm_output_get_disable_state(pending, output); drm_pending_state_apply_sync(pending); } if (b->use_pixman) drm_output_fini_pixman(output); else drm_output_fini_egl(output); drm_output_deinit_planes(output); drm_output_detach_crtc(output); if (output->hdr_output_metadata_blob_id) { drmModeDestroyPropertyBlob(device->drm.fd, output->hdr_output_metadata_blob_id); output->hdr_output_metadata_blob_id = 0; } } void drm_output_destroy(struct weston_output *base) { struct drm_output *output = to_drm_output(base); struct drm_device *device = output->device; assert(output); assert(!output->virtual); if (output->page_flip_pending || output->atomic_complete_pending) { output->destroy_pending = true; weston_log("destroy output while page flip pending\n"); return; } drm_output_set_cursor_view(output, NULL); if (output->base.enabled) drm_output_deinit(&output->base); drm_mode_list_destroy(device, &output->base.mode_list); if (output->pageflip_timer) wl_event_source_remove(output->pageflip_timer); weston_output_release(&output->base); assert(!output->state_last); drm_output_state_free(output->state_cur); assert(output->hdr_output_metadata_blob_id == 0); free(output); } static int drm_output_disable(struct weston_output *base) { struct drm_output *output = to_drm_output(base); assert(output); assert(!output->virtual); if (output->page_flip_pending || output->atomic_complete_pending) { output->disable_pending = true; return -1; } weston_log("Disabling output %s\n", output->base.name); if (output->base.enabled) drm_output_deinit(&output->base); output->disable_pending = false; return 0; } /* * This function converts the protection status from drm values to * weston_hdcp_protection status. The drm values as read from the connector * properties "Content Protection" and "HDCP Content Type" need to be converted * to appropriate weston values, that can be sent to a client application. */ static int get_weston_protection_from_drm(enum wdrm_content_protection_state protection, enum wdrm_hdcp_content_type type, enum weston_hdcp_protection *weston_protection) { if (protection >= WDRM_CONTENT_PROTECTION__COUNT) return -1; if (protection == WDRM_CONTENT_PROTECTION_DESIRED || protection == WDRM_CONTENT_PROTECTION_UNDESIRED) { *weston_protection = WESTON_HDCP_DISABLE; return 0; } if (type >= WDRM_HDCP_CONTENT_TYPE__COUNT) return -1; if (type == WDRM_HDCP_CONTENT_TYPE0) { *weston_protection = WESTON_HDCP_ENABLE_TYPE_0; return 0; } if (type == WDRM_HDCP_CONTENT_TYPE1) { *weston_protection = WESTON_HDCP_ENABLE_TYPE_1; return 0; } return -1; } /** * Get current content-protection status for a given head. * * @param head drm_head, whose protection is to be retrieved * @return protection status in case of success, -1 otherwise */ static enum weston_hdcp_protection drm_head_get_current_protection(struct drm_head *head) { drmModeObjectProperties *props = head->connector.props_drm; struct drm_property_info *info; enum wdrm_content_protection_state protection; enum wdrm_hdcp_content_type type; enum weston_hdcp_protection weston_hdcp = WESTON_HDCP_DISABLE; info = &head->connector.props[WDRM_CONNECTOR_CONTENT_PROTECTION]; protection = drm_property_get_value(info, props, WDRM_CONTENT_PROTECTION__COUNT); if (protection == WDRM_CONTENT_PROTECTION__COUNT) return WESTON_HDCP_DISABLE; info = &head->connector.props[WDRM_CONNECTOR_HDCP_CONTENT_TYPE]; type = drm_property_get_value(info, props, WDRM_HDCP_CONTENT_TYPE__COUNT); /* * In case of platforms supporting HDCP1.4, only property * 'Content Protection' is exposed and not the 'HDCP Content Type' * for such cases HDCP Type 0 should be considered as the content-type. */ if (type == WDRM_HDCP_CONTENT_TYPE__COUNT) type = WDRM_HDCP_CONTENT_TYPE0; if (get_weston_protection_from_drm(protection, type, &weston_hdcp) == -1) { weston_log("Invalid drm protection:%d type:%d, for head:%s connector-id:%d\n", protection, type, head->base.name, head->connector.connector_id); return WESTON_HDCP_DISABLE; } return weston_hdcp; } static int drm_connector_update_properties(struct drm_connector *connector) { struct drm_device *device = connector->device; drmModeObjectProperties *props; props = drmModeObjectGetProperties(device->drm.fd, connector->connector_id, DRM_MODE_OBJECT_CONNECTOR); if (!props) { weston_log("Error: failed to get connector properties\n"); return -1; } if (connector->props_drm) drmModeFreeObjectProperties(connector->props_drm); connector->props_drm = props; return 0; } /** Replace connector data and monitor information * * @param connector The drm_connector object to be updated. * @param conn The connector data to be owned by the drm_connector, must match * the current drm_connector ID. * @return 0 on success, -1 on failure. * * Takes ownership of @c connector on success, not on failure. */ static int drm_connector_assign_connector_info(struct drm_connector *connector, drmModeConnector *conn) { struct drm_device *device = connector->device; assert(connector->conn != conn); assert(connector->connector_id == conn->connector_id); if (drm_connector_update_properties(connector) < 0) return -1; if (connector->conn) drmModeFreeConnector(connector->conn); connector->conn = conn; drm_property_info_free(connector->props, WDRM_CONNECTOR__COUNT); drm_property_info_populate(device, connector_props, connector->props, WDRM_CONNECTOR__COUNT, connector->props_drm); return 0; } static void drm_connector_init(struct drm_device *device, struct drm_connector *connector, uint32_t connector_id) { connector->device = device; connector->connector_id = connector_id; connector->conn = NULL; connector->props_drm = NULL; } static void drm_connector_fini(struct drm_connector *connector) { drmModeFreeConnector(connector->conn); drmModeFreeObjectProperties(connector->props_drm); drm_property_info_free(connector->props, WDRM_CONNECTOR__COUNT); } static void drm_head_log_info(struct drm_head *head, const char *msg) { char *eotf_list; if (head->base.connected) { weston_log("DRM: head '%s' %s, connector %d is connected, " "EDID make '%s', model '%s', serial '%s'\n", head->base.name, msg, head->connector.connector_id, head->base.make, head->base.model, head->base.serial_number ?: ""); eotf_list = weston_eotf_mask_to_str(head->base.supported_eotf_mask); if (eotf_list) { weston_log_continue(STAMP_SPACE "Supported EOTF modes: %s\n", eotf_list); } free(eotf_list); } else { weston_log("DRM: head '%s' %s, connector %d is disconnected.\n", head->base.name, msg, head->connector.connector_id); } } /** Update connector and monitor information * * @param head The head to update. * @param conn The DRM connector object. * @returns 0 on success, -1 on failure. * * Updates monitor information and connection status. This may schedule a * heads changed call to the user. * * Takes ownership of @c connector on success, not on failure. */ static int drm_head_update_info(struct drm_head *head, drmModeConnector *conn) { int ret; ret = drm_connector_assign_connector_info(&head->connector, conn); update_head_from_connector(head); weston_head_set_content_protection_status(&head->base, drm_head_get_current_protection(head)); if (head->base.device_changed) drm_head_log_info(head, "updated"); return ret; } /** Update writeback connector * * @param writeback The writeback to update. * @param conn DRM connector object. * @returns 0 on success, -1 on failure. * * Takes ownership of @c connector on success, not on failure. */ static int drm_writeback_update_info(struct drm_writeback *writeback, drmModeConnector *conn) { int ret; ret = drm_connector_assign_connector_info(&writeback->connector, conn); return ret; } /** * Create a Weston head for a connector * * Given a DRM connector, create a matching drm_head structure and add it * to Weston's head list. * * @param device DRM device structure * @param conn DRM connector object * @param drm_device udev device pointer * @returns 0 on success, -1 on failure * * Takes ownership of @c connector on success, not on failure. */ static int drm_head_create(struct drm_device *device, drmModeConnector *conn, struct udev_device *drm_device) { struct drm_backend *backend = device->backend; struct drm_head *head; char *name; int ret; head = zalloc(sizeof *head); if (!head) return -1; drm_connector_init(device, &head->connector, conn->connector_id); name = make_connector_name(conn); if (!name) goto err; weston_head_init(&head->base, name); free(name); head->base.backend_id = drm_head_destroy; wl_list_init(&head->disable_head_link); ret = drm_head_update_info(head, conn); if (ret < 0) goto err_update; head->backlight = backlight_init(drm_device, conn->connector_type); if (conn->connector_type == DRM_MODE_CONNECTOR_LVDS || conn->connector_type == DRM_MODE_CONNECTOR_eDP) weston_head_set_internal(&head->base); if (drm_head_read_current_setup(head, device) < 0) { weston_log("Failed to retrieve current mode from connector %d.\n", head->connector.connector_id); /* Not fatal. */ } weston_compositor_add_head(backend->compositor, &head->base); drm_head_log_info(head, "found"); return 0; err_update: weston_head_release(&head->base); err: drm_connector_fini(&head->connector); free(head); return -1; } void drm_head_destroy(struct weston_head *base) { struct drm_head *head = to_drm_head(base); assert(head); weston_head_release(&head->base); drm_connector_fini(&head->connector); if (head->backlight) backlight_destroy(head->backlight); free(head); } /** * Create a Weston output structure * * Create an "empty" drm_output. This is the implementation of * weston_backend::create_output. * * Creating an output is usually followed by drm_output_attach_head() * and drm_output_enable() to make use of it. * * @param compositor The compositor instance. * @param name Name for the new output. * @returns The output, or NULL on failure. */ static struct weston_output * drm_output_create(struct weston_compositor *compositor, const char *name) { struct drm_backend *b = to_drm_backend(compositor); struct drm_device *device = b->drm; struct drm_output *output; output = zalloc(sizeof *output); if (output == NULL) return NULL; output->device = device; output->crtc = NULL; wl_list_init(&output->disable_head); output->max_bpc = 16; output->gbm_format = DRM_FORMAT_INVALID; #ifdef BUILD_DRM_GBM output->gbm_bo_flags = GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING; #endif weston_output_init(&output->base, compositor, name); output->base.enable = drm_output_enable; output->base.destroy = drm_output_destroy; output->base.disable = drm_output_disable; output->base.attach_head = drm_output_attach_head; output->base.detach_head = drm_output_detach_head; output->destroy_pending = false; output->disable_pending = false; output->state_cur = drm_output_state_alloc(output, NULL); weston_compositor_add_pending_output(&output->base, b->compositor); return &output->base; } /** * Create a Weston writeback for a writeback connector * * Given a DRM connector of type writeback, create a matching drm_writeback * structure and add it to Weston's writeback list. * * @param device DRM device structure * @param conn DRM connector object of type writeback * @returns 0 on success, -1 on failure * * Takes ownership of @c connector on success, not on failure. */ static int drm_writeback_create(struct drm_device *device, drmModeConnector *conn) { struct drm_writeback *writeback; int ret; writeback = zalloc(sizeof *writeback); assert(writeback); writeback->device = device; drm_connector_init(device, &writeback->connector, conn->connector_id); ret = drm_writeback_update_info(writeback, conn); if (ret < 0) goto err; wl_list_insert(&device->writeback_connector_list, &writeback->link); return 0; err: drm_connector_fini(&writeback->connector); free(writeback); return -1; } static void drm_writeback_destroy(struct drm_writeback *writeback) { drm_connector_fini(&writeback->connector); wl_list_remove(&writeback->link); free(writeback); } /** Given the DRM connector object of a connector, create drm_head or * drm_writeback object (depending on the type of connector) for it. * * The object is then added to the DRM-backend list of heads or writebacks. * * @param device The DRM device structure * @param conn The DRM connector object * @param drm_device udev device pointer * @return 0 on success, -1 on failure */ static int drm_backend_add_connector(struct drm_device *device, drmModeConnector *conn, struct udev_device *drm_device) { int ret; if (conn->connector_type == DRM_MODE_CONNECTOR_WRITEBACK) { ret = drm_writeback_create(device, conn); if (ret < 0) weston_log("DRM: failed to create writeback for connector %d.\n", conn->connector_id); } else { ret = drm_head_create(device, conn, drm_device); if (ret < 0) weston_log("DRM: failed to create head for connector %d.\n", conn->connector_id); } return ret; } /** Find all connectors of the fd and create drm_head or drm_writeback objects * (depending on the type of connector they are) for each of them * * These objects are added to the DRM-backend lists of heads and writebacks. * * @param device The DRM device structure * @param drm_device udev device pointer * @param resources The DRM resources, it is taken with drmModeGetResources * @return 0 on success, -1 on failure */ static int drm_backend_discover_connectors(struct drm_device *device, struct udev_device *drm_device, drmModeRes *resources) { drmModeConnector *conn; int i, ret; device->min_width = resources->min_width; device->max_width = resources->max_width; device->min_height = resources->min_height; device->max_height = resources->max_height; for (i = 0; i < resources->count_connectors; i++) { uint32_t connector_id = resources->connectors[i]; conn = drmModeGetConnector(device->drm.fd, connector_id); if (!conn) continue; ret = drm_backend_add_connector(device, conn, drm_device); if (ret < 0) drmModeFreeConnector(conn); } return 0; } static bool resources_has_connector(drmModeRes *resources, uint32_t connector_id) { for (int i = 0; i < resources->count_connectors; i++) { if (resources->connectors[i] == connector_id) return true; } return false; } static void drm_backend_update_connectors(struct drm_device *device, struct udev_device *drm_device) { struct drm_backend *b = device->backend; drmModeRes *resources; drmModeConnector *conn; struct weston_head *base, *base_next; struct drm_head *head; struct drm_writeback *writeback, *writeback_next; uint32_t connector_id; int i, ret; resources = drmModeGetResources(device->drm.fd); if (!resources) { weston_log("drmModeGetResources failed\n"); return; } /* collect new connectors that have appeared, e.g. MST */ for (i = 0; i < resources->count_connectors; i++) { connector_id = resources->connectors[i]; conn = drmModeGetConnector(device->drm.fd, connector_id); if (!conn) continue; head = drm_head_find_by_connector(b, connector_id); writeback = drm_writeback_find_by_connector(b, connector_id); /* Connector can't be owned by both a head and a writeback, so * one of the searches must fail. */ assert(head == NULL || writeback == NULL); if (head) ret = drm_head_update_info(head, conn); else if (writeback) ret = drm_writeback_update_info(writeback, conn); else ret = drm_backend_add_connector(b->drm, conn, drm_device); if (ret < 0) drmModeFreeConnector(conn); } /* Destroy head objects of connectors (except writeback connectors) that * have disappeared. */ wl_list_for_each_safe(base, base_next, &b->compositor->head_list, compositor_link) { head = to_drm_head(base); if (!head) continue; connector_id = head->connector.connector_id; if (head->connector.device != device) continue; if (resources_has_connector(resources, connector_id)) continue; weston_log("DRM: head '%s' (connector %d) disappeared.\n", head->base.name, connector_id); drm_head_destroy(base); } /* Destroy writeback objects of writeback connectors that have * disappeared. */ wl_list_for_each_safe(writeback, writeback_next, &b->drm->writeback_connector_list, link) { connector_id = writeback->connector.connector_id; if (resources_has_connector(resources, connector_id)) continue; weston_log("DRM: writeback connector (connector %d) disappeared.\n", connector_id); drm_writeback_destroy(writeback); } drmModeFreeResources(resources); } static enum wdrm_connector_property drm_connector_find_property_by_id(struct drm_connector *connector, uint32_t property_id) { int i; enum wdrm_connector_property prop = WDRM_CONNECTOR__COUNT; if (!connector || !property_id) return WDRM_CONNECTOR__COUNT; for (i = 0; i < WDRM_CONNECTOR__COUNT; i++) if (connector->props[i].prop_id == property_id) { prop = (enum wdrm_connector_property) i; break; } return prop; } static void drm_backend_update_conn_props(struct drm_backend *b, uint32_t connector_id, uint32_t property_id) { struct drm_head *head; enum wdrm_connector_property conn_prop; head = drm_head_find_by_connector(b, connector_id); if (!head) { weston_log("DRM: failed to find head for connector id: %d.\n", connector_id); return; } conn_prop = drm_connector_find_property_by_id(&head->connector, property_id); if (conn_prop >= WDRM_CONNECTOR__COUNT) return; if (drm_connector_update_properties(&head->connector) < 0) return; if (conn_prop == WDRM_CONNECTOR_CONTENT_PROTECTION) { weston_head_set_content_protection_status(&head->base, drm_head_get_current_protection(head)); } } static int udev_event_is_hotplug(struct drm_device *device, struct udev_device *udev_device) { const char *sysnum; const char *val; sysnum = udev_device_get_sysnum(udev_device); if (!sysnum || atoi(sysnum) != device->drm.id) return 0; val = udev_device_get_property_value(udev_device, "HOTPLUG"); if (!val) return 0; return strcmp(val, "1") == 0; } static int udev_event_is_conn_prop_change(struct drm_backend *b, struct udev_device *udev_device, uint32_t *connector_id, uint32_t *property_id) { const char *val; int id; val = udev_device_get_property_value(udev_device, "CONNECTOR"); if (!val || !safe_strtoint(val, &id)) return 0; else *connector_id = id; val = udev_device_get_property_value(udev_device, "PROPERTY"); if (!val || !safe_strtoint(val, &id)) return 0; else *property_id = id; return 1; } static int udev_drm_event(int fd, uint32_t mask, void *data) { struct drm_backend *b = data; struct udev_device *event; uint32_t conn_id, prop_id; event = udev_monitor_receive_device(b->udev_monitor); if (udev_event_is_hotplug(b->drm, event)) { if (udev_event_is_conn_prop_change(b, event, &conn_id, &prop_id)) drm_backend_update_conn_props(b, conn_id, prop_id); else drm_backend_update_connectors(b->drm, event); } udev_device_unref(event); return 1; } static void drm_destroy(struct weston_compositor *ec) { struct drm_backend *b = to_drm_backend(ec); struct drm_device *device = b->drm; struct weston_head *base, *next; struct drm_crtc *crtc, *crtc_tmp; struct drm_writeback *writeback, *writeback_tmp; udev_input_destroy(&b->input); wl_event_source_remove(b->udev_drm_source); wl_event_source_remove(b->drm_source); b->shutting_down = true; destroy_sprites(b->drm); weston_log_scope_destroy(b->debug); b->debug = NULL; weston_compositor_shutdown(ec); wl_list_for_each_safe(crtc, crtc_tmp, &b->drm->crtc_list, link) drm_crtc_destroy(crtc); wl_list_for_each_safe(base, next, &ec->head_list, compositor_link) { if (to_drm_head(base)) drm_head_destroy(base); } wl_list_for_each_safe(writeback, writeback_tmp, &b->drm->writeback_connector_list, link) drm_writeback_destroy(writeback); #ifdef BUILD_DRM_GBM if (b->gbm) gbm_device_destroy(b->gbm); #endif udev_monitor_unref(b->udev_monitor); udev_unref(b->udev); weston_launcher_close(ec->launcher, device->drm.fd); weston_launcher_destroy(ec->launcher); free(device->drm.filename); free(device); free(b); } static void session_notify(struct wl_listener *listener, void *data) { struct weston_compositor *compositor = data; struct drm_backend *b = to_drm_backend(compositor); struct drm_device *device = b->drm; struct weston_output *output; if (compositor->session_active) { weston_log("activating session\n"); weston_compositor_wake(compositor); weston_compositor_damage_all(compositor); device->state_invalid = true; udev_input_enable(&b->input); } else { weston_log("deactivating session\n"); udev_input_disable(&b->input); weston_compositor_offscreen(compositor); /* If we have a repaint scheduled (either from a * pending pageflip or the idle handler), make sure we * cancel that so we don't try to pageflip when we're * vt switched away. The OFFSCREEN state will prevent * further attempts at repainting. When we switch * back, we schedule a repaint, which will process * pending frame callbacks. */ wl_list_for_each(output, &compositor->output_list, link) if (to_drm_output(output)) output->repaint_needed = false; } } /** * Handle KMS GPU being added/removed * * If the device being added/removed is the KMS device, we activate/deactivate * the compositor session. * * @param compositor The compositor instance. * @param devnum The device being added/removed. * @param added Whether the device is being added (or removed) */ static void drm_device_changed(struct weston_compositor *compositor, dev_t devnum, bool added) { struct drm_backend *b = to_drm_backend(compositor); struct drm_device *device = b->drm; if (device->drm.fd < 0 || device->drm.devnum != devnum || compositor->session_active == added) return; compositor->session_active = added; wl_signal_emit(&compositor->session_signal, compositor); } /** * Determines whether or not a device is capable of modesetting. If successful, * sets b->drm.fd and b->drm.filename to the opened device. */ static bool drm_device_is_kms(struct drm_backend *b, struct drm_device *device, struct udev_device *udev_device) { struct weston_compositor *compositor = b->compositor; const char *filename = udev_device_get_devnode(udev_device); const char *sysnum = udev_device_get_sysnum(udev_device); dev_t devnum = udev_device_get_devnum(udev_device); drmModeRes *res; int id = -1, fd; if (!filename) return false; fd = weston_launcher_open(compositor->launcher, filename, O_RDWR); if (fd < 0) return false; res = drmModeGetResources(fd); if (!res) goto out_fd; if (res->count_crtcs <= 0 || res->count_connectors <= 0 || res->count_encoders <= 0) goto out_res; if (sysnum) id = atoi(sysnum); if (!sysnum || id < 0) { weston_log("couldn't get sysnum for device %s\n", filename); goto out_res; } /* We can be called successfully on multiple devices; if we have, * clean up old entries. */ if (device->drm.fd >= 0) weston_launcher_close(compositor->launcher, device->drm.fd); free(device->drm.filename); device->drm.fd = fd; device->drm.id = id; device->drm.filename = strdup(filename); device->drm.devnum = devnum; drmModeFreeResources(res); return true; out_res: drmModeFreeResources(res); out_fd: weston_launcher_close(b->compositor->launcher, fd); return false; } /* * Find primary GPU * Some systems may have multiple DRM devices attached to a single seat. This * function loops over all devices and tries to find a PCI device with the * boot_vga sysfs attribute set to 1. * If no such device is found, the first DRM device reported by udev is used. * Devices are also vetted to make sure they are are capable of modesetting, * rather than pure render nodes (GPU with no display), or pure * memory-allocation devices (VGEM). */ static struct udev_device* find_primary_gpu(struct drm_backend *b, const char *seat) { struct drm_device *device = b->drm; struct udev_enumerate *e; struct udev_list_entry *entry; const char *path, *device_seat, *id; struct udev_device *dev, *drm_device, *pci; e = udev_enumerate_new(b->udev); udev_enumerate_add_match_subsystem(e, "drm"); udev_enumerate_add_match_sysname(e, "card[0-9]*"); udev_enumerate_scan_devices(e); drm_device = NULL; udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) { bool is_boot_vga = false; path = udev_list_entry_get_name(entry); dev = udev_device_new_from_syspath(b->udev, path); if (!dev) continue; device_seat = udev_device_get_property_value(dev, "ID_SEAT"); if (!device_seat) device_seat = default_seat; if (strcmp(device_seat, seat)) { udev_device_unref(dev); continue; } pci = udev_device_get_parent_with_subsystem_devtype(dev, "pci", NULL); if (pci) { id = udev_device_get_sysattr_value(pci, "boot_vga"); if (id && !strcmp(id, "1")) is_boot_vga = true; } /* If we already have a modesetting-capable device, and this * device isn't our boot-VGA device, we aren't going to use * it. */ if (!is_boot_vga && drm_device) { udev_device_unref(dev); continue; } /* Make sure this device is actually capable of modesetting; * if this call succeeds, device->drm.{fd,filename} will be set, * and any old values freed. */ if (!drm_device_is_kms(b, b->drm, dev)) { udev_device_unref(dev); continue; } /* There can only be one boot_vga device, and we try to use it * at all costs. */ if (is_boot_vga) { if (drm_device) udev_device_unref(drm_device); drm_device = dev; break; } /* Per the (!is_boot_vga && drm_device) test above, we only * trump existing saved devices with boot-VGA devices, so if * we end up here, this must be the first device we've seen. */ assert(!drm_device); drm_device = dev; } /* If we're returning a device to use, we must have an open FD for * it. */ assert(!!drm_device == (device->drm.fd >= 0)); udev_enumerate_unref(e); return drm_device; } static struct udev_device * open_specific_drm_device(struct drm_backend *b, struct drm_device *device, const char *name) { struct udev_device *udev_device; udev_device = udev_device_new_from_subsystem_sysname(b->udev, "drm", name); if (!udev_device) { weston_log("ERROR: could not open DRM device '%s'\n", name); return NULL; } if (!drm_device_is_kms(b, device, udev_device)) { udev_device_unref(udev_device); weston_log("ERROR: DRM device '%s' is not a KMS device.\n", name); return NULL; } /* If we're returning a device to use, we must have an open FD for * it. */ assert(device->drm.fd >= 0); return udev_device; } static void planes_binding(struct weston_keyboard *keyboard, const struct timespec *time, uint32_t key, void *data) { struct drm_backend *b = data; struct drm_device *device = b->drm; switch (key) { case KEY_C: device->cursors_are_broken ^= true; break; case KEY_V: /* We don't support overlay-plane usage with legacy KMS. */ if (device->atomic_modeset) device->sprites_are_broken ^= true; break; default: break; } } #ifdef BUILD_VAAPI_RECORDER static void recorder_destroy(struct drm_output *output) { vaapi_recorder_destroy(output->recorder); output->recorder = NULL; weston_output_disable_planes_decr(&output->base); wl_list_remove(&output->recorder_frame_listener.link); weston_log("[libva recorder] done\n"); } static void recorder_frame_notify(struct wl_listener *listener, void *data) { struct drm_output *output; struct drm_device *device; int fd, ret; output = container_of(listener, struct drm_output, recorder_frame_listener); device = output->device; if (!output->recorder) return; ret = drmPrimeHandleToFD(device->drm.fd, output->scanout_plane->state_cur->fb->handles[0], DRM_CLOEXEC, &fd); if (ret) { weston_log("[libva recorder] " "failed to create prime fd for front buffer\n"); return; } ret = vaapi_recorder_frame(output->recorder, fd, output->scanout_plane->state_cur->fb->strides[0]); if (ret < 0) { weston_log("[libva recorder] aborted: %s\n", strerror(errno)); recorder_destroy(output); } } static void * create_recorder(struct drm_backend *b, int width, int height, const char *filename) { struct drm_device *device = b->drm; int fd; drm_magic_t magic; fd = open(device->drm.filename, O_RDWR | O_CLOEXEC); if (fd < 0) return NULL; drmGetMagic(fd, &magic); drmAuthMagic(device->drm.fd, magic); return vaapi_recorder_create(fd, width, height, filename); } static void recorder_binding(struct weston_keyboard *keyboard, const struct timespec *time, uint32_t key, void *data) { struct drm_backend *b = data; struct weston_output *base_output; struct drm_output *output; int width, height; wl_list_for_each(base_output, &b->compositor->output_list, link) { output = to_drm_output(base_output); if (output) break; } if (!output->recorder) { if (output->gbm_format != DRM_FORMAT_XRGB8888) { weston_log("failed to start vaapi recorder: " "output format not supported\n"); return; } width = output->base.current_mode->width; height = output->base.current_mode->height; output->recorder = create_recorder(b, width, height, "capture.h264"); if (!output->recorder) { weston_log("failed to create vaapi recorder\n"); return; } weston_output_disable_planes_incr(&output->base); output->recorder_frame_listener.notify = recorder_frame_notify; wl_signal_add(&output->base.frame_signal, &output->recorder_frame_listener); weston_output_schedule_repaint(&output->base); weston_log("[libva recorder] initialized\n"); } else { recorder_destroy(output); } } #else static void recorder_binding(struct weston_keyboard *keyboard, const struct timespec *time, uint32_t key, void *data) { weston_log("Compiled without libva support\n"); } #endif static const struct weston_drm_output_api api = { drm_output_set_mode, drm_output_set_gbm_format, drm_output_set_seat, drm_output_set_max_bpc, }; static struct drm_backend * drm_backend_create(struct weston_compositor *compositor, struct weston_drm_backend_config *config) { struct drm_backend *b; struct drm_device *device; struct udev_device *drm_device; struct wl_event_loop *loop; const char *seat_id = default_seat; const char *session_seat; struct weston_drm_format_array *scanout_formats; drmModeRes *res; int ret; session_seat = getenv("XDG_SEAT"); if (session_seat) seat_id = session_seat; if (config->seat_id) seat_id = config->seat_id; weston_log("initializing drm backend\n"); b = zalloc(sizeof *b); if (b == NULL) return NULL; device = zalloc(sizeof *device); if (device == NULL) return NULL; device->state_invalid = true; device->drm.fd = -1; device->backend = b; b->drm = device; b->compositor = compositor; b->use_pixman = config->use_pixman; b->pageflip_timeout = config->pageflip_timeout; b->use_pixman_shadow = config->use_pixman_shadow; b->debug = weston_compositor_add_log_scope(compositor, "drm-backend", "Debug messages from DRM/KMS backend\n", NULL, NULL, NULL); compositor->backend = &b->base; if (parse_gbm_format(config->gbm_format, DRM_FORMAT_XRGB8888, &b->gbm_format) < 0) goto err_compositor; /* Check if we run drm-backend using a compatible launcher */ compositor->launcher = weston_launcher_connect(compositor, seat_id, true); if (compositor->launcher == NULL) { weston_log("fatal: your system should either provide the " "logind D-Bus API, or use seatd.\n"); goto err_compositor; } b->udev = udev_new(); if (b->udev == NULL) { weston_log("failed to initialize udev context\n"); goto err_launcher; } b->session_listener.notify = session_notify; wl_signal_add(&compositor->session_signal, &b->session_listener); if (config->specific_device) drm_device = open_specific_drm_device(b, device, config->specific_device); else drm_device = find_primary_gpu(b, seat_id); if (drm_device == NULL) { weston_log("no drm device found\n"); goto err_udev; } if (init_kms_caps(device) < 0) { weston_log("failed to initialize kms\n"); goto err_udev_dev; } if (b->use_pixman) { if (init_pixman(b) < 0) { weston_log("failed to initialize pixman renderer\n"); goto err_udev_dev; } } else { if (init_egl(b) < 0) { weston_log("failed to initialize egl\n"); goto err_udev_dev; } } b->base.destroy = drm_destroy; b->base.repaint_begin = drm_repaint_begin; b->base.repaint_flush = drm_repaint_flush; b->base.repaint_cancel = drm_repaint_cancel; b->base.create_output = drm_output_create; b->base.device_changed = drm_device_changed; b->base.can_scanout_dmabuf = drm_can_scanout_dmabuf; weston_setup_vt_switch_bindings(compositor); res = drmModeGetResources(b->drm->drm.fd); if (!res) { weston_log("Failed to get drmModeRes\n"); goto err_udev_dev; } wl_list_init(&b->drm->crtc_list); if (drm_backend_create_crtc_list(b->drm, res) == -1) { weston_log("Failed to create CRTC list for DRM-backend\n"); goto err_create_crtc_list; } wl_list_init(&device->plane_list); create_sprites(b->drm); if (udev_input_init(&b->input, compositor, b->udev, seat_id, config->configure_device) < 0) { weston_log("failed to create input devices\n"); goto err_sprite; } wl_list_init(&b->drm->writeback_connector_list); if (drm_backend_discover_connectors(b->drm, drm_device, res) < 0) { weston_log("Failed to create heads for %s\n", b->drm->drm.filename); goto err_udev_input; } drmModeFreeResources(res); /* 'compute' faked zpos values in case HW doesn't expose any */ drm_backend_create_faked_zpos(b); /* A this point we have some idea of whether or not we have a working * cursor plane. */ if (!device->cursors_are_broken) compositor->capabilities |= WESTON_CAP_CURSOR_PLANE; loop = wl_display_get_event_loop(compositor->wl_display); b->drm_source = wl_event_loop_add_fd(loop, b->drm->drm.fd, WL_EVENT_READABLE, on_drm_input, b->drm); b->udev_monitor = udev_monitor_new_from_netlink(b->udev, "udev"); if (b->udev_monitor == NULL) { weston_log("failed to initialize udev monitor\n"); goto err_drm_source; } udev_monitor_filter_add_match_subsystem_devtype(b->udev_monitor, "drm", NULL); b->udev_drm_source = wl_event_loop_add_fd(loop, udev_monitor_get_fd(b->udev_monitor), WL_EVENT_READABLE, udev_drm_event, b); if (udev_monitor_enable_receiving(b->udev_monitor) < 0) { weston_log("failed to enable udev-monitor receiving\n"); goto err_udev_monitor; } udev_device_unref(drm_device); weston_compositor_add_debug_binding(compositor, KEY_O, planes_binding, b); weston_compositor_add_debug_binding(compositor, KEY_C, planes_binding, b); weston_compositor_add_debug_binding(compositor, KEY_V, planes_binding, b); weston_compositor_add_debug_binding(compositor, KEY_Q, recorder_binding, b); if (compositor->renderer->import_dmabuf) { if (linux_dmabuf_setup(compositor) < 0) weston_log("Error: initializing dmabuf " "support failed.\n"); if (compositor->default_dmabuf_feedback) { /* We were able to create the compositor's default * dma-buf feedback in the renderer, that means that the * table was already created and populated with * renderer's format/modifier pairs. So now we must * compute the scanout formats indices in the table */ scanout_formats = get_scanout_formats(b->drm); if (!scanout_formats) goto err_udev_monitor; ret = weston_dmabuf_feedback_format_table_set_scanout_indices(compositor->dmabuf_feedback_format_table, scanout_formats); weston_drm_format_array_fini(scanout_formats); free(scanout_formats); if (ret < 0) goto err_udev_monitor; } if (weston_direct_display_setup(compositor) < 0) weston_log("Error: initializing direct-display " "support failed.\n"); } if (compositor->capabilities & WESTON_CAP_EXPLICIT_SYNC) { if (linux_explicit_synchronization_setup(compositor) < 0) weston_log("Error: initializing explicit " " synchronization support failed.\n"); } if (device->atomic_modeset) if (weston_compositor_enable_content_protection(compositor) < 0) weston_log("Error: initializing content-protection " "support failed.\n"); ret = weston_plugin_api_register(compositor, WESTON_DRM_OUTPUT_API_NAME, &api, sizeof(api)); if (ret < 0) { weston_log("Failed to register output API.\n"); goto err_udev_monitor; } ret = drm_backend_init_virtual_output_api(compositor); if (ret < 0) { weston_log("Failed to register virtual output API.\n"); goto err_udev_monitor; } return b; err_udev_monitor: wl_event_source_remove(b->udev_drm_source); udev_monitor_unref(b->udev_monitor); err_drm_source: wl_event_source_remove(b->drm_source); err_udev_input: udev_input_destroy(&b->input); err_sprite: destroy_sprites(b->drm); err_create_crtc_list: drmModeFreeResources(res); err_udev_dev: udev_device_unref(drm_device); err_udev: udev_unref(b->udev); err_launcher: weston_launcher_destroy(compositor->launcher); err_compositor: weston_compositor_shutdown(compositor); #ifdef BUILD_DRM_GBM if (b->gbm) gbm_device_destroy(b->gbm); #endif free(b); return NULL; } static void config_init_to_defaults(struct weston_drm_backend_config *config) { config->use_pixman_shadow = true; } WL_EXPORT int weston_backend_init(struct weston_compositor *compositor, struct weston_backend_config *config_base) { struct drm_backend *b; struct weston_drm_backend_config config = {{ 0, }}; if (config_base == NULL || config_base->struct_version != WESTON_DRM_BACKEND_CONFIG_VERSION || config_base->struct_size > sizeof(struct weston_drm_backend_config)) { weston_log("drm backend config structure is invalid\n"); return -1; } config_init_to_defaults(&config); memcpy(&config, config_base, config_base->struct_size); b = drm_backend_create(compositor, &config); if (b == NULL) return -1; return 0; }