/* * Copyright © 2008-2011 Kristian Høgsberg * Copyright © 2011 Intel Corporation * * Permission to use, copy, modify, distribute, and sell this software and * its documentation for any purpose is hereby granted without fee, provided * that the above copyright notice appear in all copies and that both that * copyright notice and this permission notice appear in supporting * documentation, and that the name of the copyright holders not be used in * advertising or publicity pertaining to distribution of the software * without specific, written prior permission. The copyright holders make * no representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. * * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include "compositor.h" #include "evdev.h" struct drm_compositor { struct weston_compositor base; struct udev *udev; struct wl_event_source *drm_source; struct udev_monitor *udev_monitor; struct wl_event_source *udev_drm_source; struct { int id; int fd; } drm; struct gbm_device *gbm; uint32_t *crtcs; int num_crtcs; uint32_t crtc_allocator; uint32_t connector_allocator; struct tty *tty; struct wl_list sprite_list; int sprites_are_broken; uint32_t prev_state; }; struct drm_mode { struct weston_mode base; drmModeModeInfo mode_info; }; struct drm_output { struct weston_output base; uint32_t crtc_id; uint32_t connector_id; drmModeCrtcPtr original_crtc; GLuint rbo[2]; uint32_t fb_id[2]; EGLImageKHR image[2]; struct gbm_bo *bo[2]; uint32_t current; uint32_t fs_surf_fb_id; uint32_t pending_fs_surf_fb_id; struct wl_buffer *scanout_buffer; struct wl_listener scanout_buffer_destroy_listener; struct wl_buffer *pending_scanout_buffer; struct wl_listener pending_scanout_buffer_destroy_listener; struct backlight *backlight; }; /* * An output has a primary display plane plus zero or more sprites for * blending display contents. */ struct drm_sprite { struct wl_list link; uint32_t fb_id; uint32_t pending_fb_id; struct weston_surface *surface; struct weston_surface *pending_surface; struct drm_compositor *compositor; struct wl_listener destroy_listener; struct wl_listener pending_destroy_listener; uint32_t possible_crtcs; uint32_t plane_id; uint32_t count_formats; int32_t src_x, src_y; uint32_t src_w, src_h; uint32_t dest_x, dest_y; uint32_t dest_w, dest_h; uint32_t formats[]; }; static int surface_is_primary(struct weston_compositor *ec, struct weston_surface *es) { struct weston_surface *primary; primary = container_of(ec->surface_list.next, struct weston_surface, link); if (es == primary) return -1; return 0; } static int drm_sprite_crtc_supported(struct weston_output *output_base, uint32_t supported) { struct weston_compositor *ec = output_base->compositor; struct drm_compositor *c =(struct drm_compositor *) ec; struct drm_output *output = (struct drm_output *) output_base; int crtc; for (crtc = 0; crtc < c->num_crtcs; crtc++) { if (c->crtcs[crtc] != output->crtc_id) continue; if (supported & (1 << crtc)) return -1; } return 0; } static int drm_output_prepare_scanout_surface(struct drm_output *output) { struct drm_compositor *c = (struct drm_compositor *) output->base.compositor; struct weston_surface *es; EGLint handle, stride; int ret; uint32_t fb_id = 0; struct gbm_bo *bo; es = container_of(c->base.surface_list.next, struct weston_surface, link); /* Need to verify output->region contained in surface opaque * region. Or maybe just that format doesn't have alpha. */ return -1; if (es->geometry.x != output->base.x || es->geometry.y != output->base.y || es->geometry.width != output->base.current->width || es->geometry.height != output->base.current->height || es->transform.enabled || es->image == EGL_NO_IMAGE_KHR) return -1; bo = gbm_bo_create_from_egl_image(c->gbm, c->base.display, es->image, es->geometry.width, es->geometry.height, GBM_BO_USE_SCANOUT); handle = gbm_bo_get_handle(bo).s32; stride = gbm_bo_get_pitch(bo); gbm_bo_destroy(bo); if (handle == 0) return -1; ret = drmModeAddFB(c->drm.fd, output->base.current->width, output->base.current->height, 24, 32, stride, handle, &fb_id); if (ret) return -1; output->pending_fs_surf_fb_id = fb_id; /* assert output->pending_scanout_buffer == NULL */ output->pending_scanout_buffer = es->buffer; output->pending_scanout_buffer->busy_count++; wl_list_insert(output->pending_scanout_buffer->resource.destroy_listener_list.prev, &output->pending_scanout_buffer_destroy_listener.link); pixman_region32_fini(&es->damage); pixman_region32_init(&es->damage); return 0; } static void drm_output_repaint(struct weston_output *output_base, pixman_region32_t *damage) { struct drm_output *output = (struct drm_output *) output_base; struct drm_compositor *compositor = (struct drm_compositor *) output->base.compositor; struct weston_surface *surface; struct drm_sprite *s; uint32_t fb_id = 0; int ret = 0; glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, output->rbo[output->current]); if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) return; drm_output_prepare_scanout_surface(output); wl_list_for_each_reverse(surface, &compositor->base.surface_list, link) weston_surface_draw(surface, &output->base, damage); glFlush(); output->current ^= 1; if (output->pending_fs_surf_fb_id != 0) { fb_id = output->pending_fs_surf_fb_id; } else { fb_id = output->fb_id[output->current ^ 1]; } if (drmModePageFlip(compositor->drm.fd, output->crtc_id, fb_id, DRM_MODE_PAGE_FLIP_EVENT, output) < 0) { fprintf(stderr, "queueing pageflip failed: %m\n"); return; } /* * Now, update all the sprite surfaces */ wl_list_for_each(s, &compositor->sprite_list, link) { uint32_t flags = 0; drmVBlank vbl = { .request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT, .request.sequence = 1, }; if (!drm_sprite_crtc_supported(output_base, s->possible_crtcs)) continue; ret = drmModeSetPlane(compositor->drm.fd, s->plane_id, output->crtc_id, s->pending_fb_id, flags, s->dest_x, s->dest_y, s->dest_w, s->dest_h, s->src_x, s->src_y, s->src_w, s->src_h); if (ret) fprintf(stderr, "setplane failed: %d: %s\n", ret, strerror(errno)); /* * Queue a vblank signal so we know when the surface * becomes active on the display or has been replaced. */ vbl.request.signal = (unsigned long)s; ret = drmWaitVBlank(compositor->drm.fd, &vbl); if (ret) { fprintf(stderr, "vblank event request failed: %d: %s\n", ret, strerror(errno)); } } return; } static void vblank_handler(int fd, unsigned int frame, unsigned int sec, unsigned int usec, void *data) { struct drm_sprite *s = (struct drm_sprite *)data; struct drm_compositor *c = s->compositor; if (s->surface) { weston_buffer_post_release(s->surface->buffer); wl_list_remove(&s->destroy_listener.link); s->surface = NULL; drmModeRmFB(c->drm.fd, s->fb_id); s->fb_id = 0; } if (s->pending_surface) { wl_list_remove(&s->pending_destroy_listener.link); wl_list_insert(s->pending_surface->buffer->resource.destroy_listener_list.prev, &s->destroy_listener.link); s->surface = s->pending_surface; s->pending_surface = NULL; s->fb_id = s->pending_fb_id; s->pending_fb_id = 0; } } static void page_flip_handler(int fd, unsigned int frame, unsigned int sec, unsigned int usec, void *data) { struct drm_output *output = (struct drm_output *) data; struct drm_compositor *c = (struct drm_compositor *) output->base.compositor; uint32_t msecs; if (output->scanout_buffer) { weston_buffer_post_release(output->scanout_buffer); wl_list_remove(&output->scanout_buffer_destroy_listener.link); output->scanout_buffer = NULL; drmModeRmFB(c->drm.fd, output->fs_surf_fb_id); output->fs_surf_fb_id = 0; } if (output->pending_scanout_buffer) { output->scanout_buffer = output->pending_scanout_buffer; wl_list_remove(&output->pending_scanout_buffer_destroy_listener.link); wl_list_insert(output->scanout_buffer->resource.destroy_listener_list.prev, &output->scanout_buffer_destroy_listener.link); output->pending_scanout_buffer = NULL; output->fs_surf_fb_id = output->pending_fs_surf_fb_id; output->pending_fs_surf_fb_id = 0; } msecs = sec * 1000 + usec / 1000; weston_output_finish_frame(&output->base, msecs); } static int drm_surface_format_supported(struct drm_sprite *s, uint32_t format) { int i; for (i = 0; i < s->count_formats; i++) if (s->formats[i] == format) return 1; return 0; } static int drm_surface_transform_supported(struct weston_surface *es) { if (es->transform.enabled) return 0; return 1; } static int drm_surface_overlap_supported(struct weston_output *output_base, pixman_region32_t *overlap) { /* We could potentially use a color key here if the surface left * to display has rectangular regions */ if (pixman_region32_not_empty(overlap)) return 0; return 1; } static void drm_disable_unused_sprites(struct weston_output *output_base) { struct weston_compositor *ec = output_base->compositor; struct drm_compositor *c =(struct drm_compositor *) ec; struct drm_output *output = (struct drm_output *) output_base; struct drm_sprite *s; int ret; wl_list_for_each(s, &c->sprite_list, link) { if (s->pending_fb_id) continue; ret = drmModeSetPlane(c->drm.fd, s->plane_id, output->crtc_id, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); if (ret) fprintf(stderr, "failed to disable plane: %d: %s\n", ret, strerror(errno)); drmModeRmFB(c->drm.fd, s->fb_id); s->surface = NULL; s->pending_surface = NULL; s->fb_id = 0; s->pending_fb_id = 0; } } /* * This function must take care to damage any previously assigned surface * if the sprite ends up binding to a different surface than in the * previous frame. */ static int drm_output_prepare_overlay_surface(struct weston_output *output_base, struct weston_surface *es, pixman_region32_t *overlap) { struct weston_compositor *ec = output_base->compositor; struct drm_compositor *c =(struct drm_compositor *) ec; struct drm_sprite *s; int found = 0; EGLint handle, stride; struct gbm_bo *bo; uint32_t fb_id = 0; uint32_t handles[4], pitches[4], offsets[4]; int ret = 0; pixman_region32_t dest_rect, src_rect; pixman_box32_t *box; uint32_t format; if (c->sprites_are_broken) return -1; if (surface_is_primary(ec, es)) return -1; if (es->image == EGL_NO_IMAGE_KHR) return -1; if (!drm_surface_transform_supported(es)) return -1; if (!drm_surface_overlap_supported(output_base, overlap)) return -1; wl_list_for_each(s, &c->sprite_list, link) { if (!drm_sprite_crtc_supported(output_base, s->possible_crtcs)) continue; if (!s->pending_fb_id) { found = 1; break; } } /* No sprites available */ if (!found) return -1; bo = gbm_bo_create_from_egl_image(c->gbm, c->base.display, es->image, es->geometry.width, es->geometry.height, GBM_BO_USE_SCANOUT); format = gbm_bo_get_format(bo); handle = gbm_bo_get_handle(bo).s32; stride = gbm_bo_get_pitch(bo); gbm_bo_destroy(bo); if (!drm_surface_format_supported(s, format)) return -1; if (!handle) return -1; handles[0] = handle; pitches[0] = stride; offsets[0] = 0; ret = drmModeAddFB2(c->drm.fd, es->geometry.width, es->geometry.height, format, handles, pitches, offsets, &fb_id, 0); if (ret) { fprintf(stderr, "addfb2 failed: %d\n", ret); c->sprites_are_broken = 1; return -1; } if (s->surface && s->surface != es) { struct weston_surface *old_surf = s->surface; pixman_region32_fini(&old_surf->damage); pixman_region32_init_rect(&old_surf->damage, old_surf->geometry.x, old_surf->geometry.y, old_surf->geometry.width, old_surf->geometry.height); } s->pending_fb_id = fb_id; s->pending_surface = es; es->buffer->busy_count++; /* * Calculate the source & dest rects properly based on actual * postion (note the caller has called weston_surface_update_transform() * for us already). */ pixman_region32_init(&dest_rect); pixman_region32_intersect(&dest_rect, &es->transform.boundingbox, &output_base->region); pixman_region32_translate(&dest_rect, -output_base->x, -output_base->y); box = pixman_region32_extents(&dest_rect); s->dest_x = box->x1; s->dest_y = box->y1; s->dest_w = box->x2 - box->x1; s->dest_h = box->y2 - box->y1; pixman_region32_fini(&dest_rect); pixman_region32_init(&src_rect); pixman_region32_intersect(&src_rect, &es->transform.boundingbox, &output_base->region); pixman_region32_translate(&src_rect, -es->geometry.x, -es->geometry.y); box = pixman_region32_extents(&src_rect); s->src_x = box->x1 << 16; s->src_y = box->y1 << 16; s->src_w = (box->x2 - box->x1) << 16; s->src_h = (box->y2 - box->y1) << 16; pixman_region32_fini(&src_rect); wl_list_insert(es->buffer->resource.destroy_listener_list.prev, &s->pending_destroy_listener.link); return 0; } static int drm_output_set_cursor(struct weston_output *output_base, struct weston_input_device *eid); static void weston_output_set_cursor(struct weston_output *output, struct weston_input_device *device, pixman_region32_t *overlap) { pixman_region32_t cursor_region; int prior_was_hardware; if (device->sprite == NULL) return; pixman_region32_init(&cursor_region); pixman_region32_intersect(&cursor_region, &device->sprite->transform.boundingbox, &output->region); if (!pixman_region32_not_empty(&cursor_region)) { drm_output_set_cursor(output, NULL); goto out; } prior_was_hardware = device->hw_cursor; if (pixman_region32_not_empty(overlap) || drm_output_set_cursor(output, device) < 0) { if (prior_was_hardware) { weston_surface_damage(device->sprite); drm_output_set_cursor(output, NULL); } device->hw_cursor = 0; } else { if (!prior_was_hardware) weston_surface_damage_below(device->sprite); pixman_region32_fini(&device->sprite->damage); pixman_region32_init(&device->sprite->damage); device->hw_cursor = 1; } out: pixman_region32_fini(&cursor_region); } static void drm_assign_planes(struct weston_output *output) { struct weston_compositor *ec = output->compositor; struct weston_surface *es; pixman_region32_t overlap, surface_overlap; struct weston_input_device *device; /* * Find a surface for each sprite in the output using some heuristics: * 1) size * 2) frequency of update * 3) opacity (though some hw might support alpha blending) * 4) clipping (this can be fixed with color keys) * * The idea is to save on blitting since this should save power. * If we can get a large video surface on the sprite for example, * the main display surface may not need to update at all, and * the client buffer can be used directly for the sprite surface * as we do for flipping full screen surfaces. */ pixman_region32_init(&overlap); wl_list_for_each(es, &ec->surface_list, link) { /* * FIXME: try to assign hw cursors here too, they're just * special overlays */ pixman_region32_init(&surface_overlap); pixman_region32_intersect(&surface_overlap, &overlap, &es->transform.boundingbox); device = (struct weston_input_device *) ec->input_device; if (es == device->sprite) { weston_output_set_cursor(output, device, &surface_overlap); if (!device->hw_cursor) pixman_region32_union(&overlap, &overlap, &es->transform.boundingbox); } else if (!drm_output_prepare_overlay_surface(output, es, &surface_overlap)) { pixman_region32_fini(&es->damage); pixman_region32_init(&es->damage); } else { pixman_region32_union(&overlap, &overlap, &es->transform.boundingbox); } pixman_region32_fini(&surface_overlap); } pixman_region32_fini(&overlap); drm_disable_unused_sprites(output); } static int drm_output_set_cursor(struct weston_output *output_base, struct weston_input_device *eid) { struct drm_output *output = (struct drm_output *) output_base; struct drm_compositor *c = (struct drm_compositor *) output->base.compositor; EGLint handle, stride; int ret = -1; struct gbm_bo *bo; if (eid == NULL) { drmModeSetCursor(c->drm.fd, output->crtc_id, 0, 0, 0); return 0; } if (eid->sprite->image == EGL_NO_IMAGE_KHR) goto out; if (eid->sprite->geometry.width > 64 || eid->sprite->geometry.height > 64) goto out; bo = gbm_bo_create_from_egl_image(c->gbm, c->base.display, eid->sprite->image, 64, 64, GBM_BO_USE_CURSOR_64X64); /* Not suitable for hw cursor, fall back */ if (bo == NULL) goto out; handle = gbm_bo_get_handle(bo).s32; stride = gbm_bo_get_pitch(bo); gbm_bo_destroy(bo); /* gbm_bo_create_from_egl_image() didn't always validate the usage * flags, and in that case we might end up with a bad stride. */ if (stride != 64 * 4) goto out; ret = drmModeSetCursor(c->drm.fd, output->crtc_id, handle, 64, 64); if (ret) { fprintf(stderr, "failed to set cursor: %s\n", strerror(-ret)); goto out; } ret = drmModeMoveCursor(c->drm.fd, output->crtc_id, eid->sprite->geometry.x - output->base.x, eid->sprite->geometry.y - output->base.y); if (ret) { fprintf(stderr, "failed to move cursor: %s\n", strerror(-ret)); goto out; } out: if (ret) drmModeSetCursor(c->drm.fd, output->crtc_id, 0, 0, 0); return ret; } static void drm_output_destroy(struct weston_output *output_base) { struct drm_output *output = (struct drm_output *) output_base; struct drm_compositor *c = (struct drm_compositor *) output->base.compositor; drmModeCrtcPtr origcrtc = output->original_crtc; int i; if (output->backlight) backlight_destroy(output->backlight); /* Turn off hardware cursor */ drm_output_set_cursor(&output->base, NULL); /* Restore original CRTC state */ drmModeSetCrtc(c->drm.fd, origcrtc->crtc_id, origcrtc->buffer_id, origcrtc->x, origcrtc->y, &output->connector_id, 1, &origcrtc->mode); drmModeFreeCrtc(origcrtc); glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, 0); glBindRenderbuffer(GL_RENDERBUFFER, 0); glDeleteRenderbuffers(2, output->rbo); /* Destroy output buffers */ for (i = 0; i < 2; i++) { drmModeRmFB(c->drm.fd, output->fb_id[i]); c->base.destroy_image(c->base.display, output->image[i]); gbm_bo_destroy(output->bo[i]); } c->crtc_allocator &= ~(1 << output->crtc_id); c->connector_allocator &= ~(1 << output->connector_id); weston_output_destroy(&output->base); wl_list_remove(&output->base.link); free(output); } static int on_drm_input(int fd, uint32_t mask, void *data) { drmEventContext evctx; memset(&evctx, 0, sizeof evctx); evctx.version = DRM_EVENT_CONTEXT_VERSION; evctx.page_flip_handler = page_flip_handler; evctx.vblank_handler = vblank_handler; drmHandleEvent(fd, &evctx); return 1; } static int init_egl(struct drm_compositor *ec, struct udev_device *device) { EGLint major, minor; const char *extensions, *filename, *sysnum; int fd; static const EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE }; sysnum = udev_device_get_sysnum(device); if (sysnum) ec->drm.id = atoi(sysnum); if (!sysnum || ec->drm.id < 0) { fprintf(stderr, "cannot get device sysnum\n"); return -1; } filename = udev_device_get_devnode(device); fd = open(filename, O_RDWR | O_CLOEXEC); if (fd < 0) { /* Probably permissions error */ fprintf(stderr, "couldn't open %s, skipping\n", udev_device_get_devnode(device)); return -1; } ec->drm.fd = fd; ec->gbm = gbm_create_device(ec->drm.fd); ec->base.display = eglGetDisplay(ec->gbm); if (ec->base.display == NULL) { fprintf(stderr, "failed to create display\n"); return -1; } if (!eglInitialize(ec->base.display, &major, &minor)) { fprintf(stderr, "failed to initialize display\n"); return -1; } extensions = eglQueryString(ec->base.display, EGL_EXTENSIONS); if (!strstr(extensions, "EGL_KHR_surfaceless_gles2")) { fprintf(stderr, "EGL_KHR_surfaceless_gles2 not available\n"); return -1; } if (!eglBindAPI(EGL_OPENGL_ES_API)) { fprintf(stderr, "failed to bind api EGL_OPENGL_ES_API\n"); return -1; } ec->base.context = eglCreateContext(ec->base.display, NULL, EGL_NO_CONTEXT, context_attribs); if (ec->base.context == NULL) { fprintf(stderr, "failed to create context\n"); return -1; } if (!eglMakeCurrent(ec->base.display, EGL_NO_SURFACE, EGL_NO_SURFACE, ec->base.context)) { fprintf(stderr, "failed to make context current\n"); return -1; } return 0; } static drmModeModeInfo builtin_1024x768 = { 63500, /* clock */ 1024, 1072, 1176, 1328, 0, 768, 771, 775, 798, 0, 59920, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC, 0, "1024x768" }; static int drm_output_add_mode(struct drm_output *output, drmModeModeInfo *info) { struct drm_mode *mode; mode = malloc(sizeof *mode); if (mode == NULL) return -1; mode->base.flags = 0; mode->base.width = info->hdisplay; mode->base.height = info->vdisplay; mode->base.refresh = info->vrefresh; mode->mode_info = *info; wl_list_insert(output->base.mode_list.prev, &mode->base.link); return 0; } static int drm_subpixel_to_wayland(int drm_value) { switch (drm_value) { default: case DRM_MODE_SUBPIXEL_UNKNOWN: return WL_OUTPUT_SUBPIXEL_UNKNOWN; case DRM_MODE_SUBPIXEL_NONE: return WL_OUTPUT_SUBPIXEL_NONE; case DRM_MODE_SUBPIXEL_HORIZONTAL_RGB: return WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB; case DRM_MODE_SUBPIXEL_HORIZONTAL_BGR: return WL_OUTPUT_SUBPIXEL_HORIZONTAL_BGR; case DRM_MODE_SUBPIXEL_VERTICAL_RGB: return WL_OUTPUT_SUBPIXEL_VERTICAL_RGB; case DRM_MODE_SUBPIXEL_VERTICAL_BGR: return WL_OUTPUT_SUBPIXEL_VERTICAL_BGR; } } static void output_handle_scanout_buffer_destroy(struct wl_listener *listener, struct wl_resource *resource, uint32_t time) { struct drm_output *output = container_of(listener, struct drm_output, scanout_buffer_destroy_listener); output->scanout_buffer = NULL; if (!output->pending_scanout_buffer) weston_compositor_schedule_repaint(output->base.compositor); } static void output_handle_pending_scanout_buffer_destroy(struct wl_listener *listener, struct wl_resource *resource, uint32_t time) { struct drm_output *output = container_of(listener, struct drm_output, pending_scanout_buffer_destroy_listener); output->pending_scanout_buffer = NULL; weston_compositor_schedule_repaint(output->base.compositor); } static void sprite_handle_buffer_destroy(struct wl_listener *listener, struct wl_resource *resource, uint32_t time) { struct drm_sprite *sprite = container_of(listener, struct drm_sprite, destroy_listener); sprite->surface = NULL; } static void sprite_handle_pending_buffer_destroy(struct wl_listener *listener, struct wl_resource *resource, uint32_t time) { struct drm_sprite *sprite = container_of(listener, struct drm_sprite, pending_destroy_listener); sprite->pending_surface = NULL; } /* returns a value between 0-255 range, where higher is brighter */ static uint32_t drm_get_backlight(struct drm_output *output) { long brightness, max_brightness, norm; brightness = backlight_get_brightness(output->backlight); max_brightness = backlight_get_max_brightness(output->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 = (struct drm_output *) output_base; long max_brightness, new_brightness; if (!output->backlight) return; if (value < 0 || value > 255) return; max_brightness = backlight_get_max_brightness(output->backlight); /* get denormalized value */ new_brightness = (value * max_brightness) / 255; backlight_set_brightness(output->backlight, new_brightness); } static drmModePropertyPtr drm_get_prop(int fd, drmModeConnectorPtr connector, const char *name) { drmModePropertyPtr props; int i; for (i = 0; i < connector->count_props; i++) { props = drmModeGetProperty(fd, connector->props[i]); if (!props) continue; if (!strcmp(props->name, name)) return props; drmModeFreeProperty(props); } return NULL; } static void drm_set_dpms(struct weston_output *output_base, enum dpms_enum level) { struct drm_output *output = (struct drm_output *) output_base; struct weston_compositor *ec = output_base->compositor; struct drm_compositor *c = (struct drm_compositor *) ec; drmModeConnectorPtr connector; drmModePropertyPtr prop; connector = drmModeGetConnector(c->drm.fd, output->connector_id); if (!connector) return; prop = drm_get_prop(c->drm.fd, connector, "DPMS"); if (!prop) { drmModeFreeConnector(connector); return; } drmModeConnectorSetProperty(c->drm.fd, connector->connector_id, prop->prop_id, level); drmModeFreeProperty(prop); drmModeFreeConnector(connector); } static int create_output_for_connector(struct drm_compositor *ec, drmModeRes *resources, drmModeConnector *connector, int x, int y, struct udev_device *drm_device) { struct drm_output *output; struct drm_mode *drm_mode, *next; drmModeEncoder *encoder; int i, ret; unsigned handle, stride; encoder = drmModeGetEncoder(ec->drm.fd, connector->encoders[0]); if (encoder == NULL) { fprintf(stderr, "No encoder for connector.\n"); return -1; } for (i = 0; i < resources->count_crtcs; i++) { if (encoder->possible_crtcs & (1 << i) && !(ec->crtc_allocator & (1 << resources->crtcs[i]))) break; } if (i == resources->count_crtcs) { fprintf(stderr, "No usable crtc for encoder.\n"); drmModeFreeEncoder(encoder); return -1; } output = malloc(sizeof *output); if (output == NULL) { drmModeFreeEncoder(encoder); return -1; } output->fb_id[0] = -1; output->fb_id[1] = -1; memset(output, 0, sizeof *output); output->base.subpixel = drm_subpixel_to_wayland(connector->subpixel); output->base.make = "unknown"; output->base.model = "unknown"; wl_list_init(&output->base.mode_list); output->crtc_id = resources->crtcs[i]; ec->crtc_allocator |= (1 << output->crtc_id); output->connector_id = connector->connector_id; ec->connector_allocator |= (1 << output->connector_id); output->original_crtc = drmModeGetCrtc(ec->drm.fd, output->crtc_id); drmModeFreeEncoder(encoder); for (i = 0; i < connector->count_modes; i++) { ret = drm_output_add_mode(output, &connector->modes[i]); if (ret) goto err_free; } if (connector->count_modes == 0) { ret = drm_output_add_mode(output, &builtin_1024x768); if (ret) goto err_free; } drm_mode = container_of(output->base.mode_list.next, struct drm_mode, base.link); output->base.current = &drm_mode->base; drm_mode->base.flags = WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED; glGenRenderbuffers(2, output->rbo); for (i = 0; i < 2; i++) { glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]); output->bo[i] = gbm_bo_create(ec->gbm, output->base.current->width, output->base.current->height, GBM_BO_FORMAT_XRGB8888, GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING); if (!output->bo[i]) goto err_bufs; output->image[i] = ec->base.create_image(ec->base.display, NULL, EGL_NATIVE_PIXMAP_KHR, output->bo[i], NULL); if (!output->image[i]) goto err_bufs; ec->base.image_target_renderbuffer_storage(GL_RENDERBUFFER, output->image[i]); stride = gbm_bo_get_pitch(output->bo[i]); handle = gbm_bo_get_handle(output->bo[i]).u32; ret = drmModeAddFB(ec->drm.fd, output->base.current->width, output->base.current->height, 24, 32, stride, handle, &output->fb_id[i]); if (ret) { fprintf(stderr, "failed to add fb %d: %m\n", i); goto err_bufs; } } output->current = 0; glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, output->rbo[output->current]); ret = drmModeSetCrtc(ec->drm.fd, output->crtc_id, output->fb_id[output->current ^ 1], 0, 0, &output->connector_id, 1, &drm_mode->mode_info); if (ret) { fprintf(stderr, "failed to set mode: %m\n"); goto err_fb; } output->backlight = backlight_init(drm_device, connector->connector_type); if (output->backlight) { output->base.set_backlight = drm_set_backlight; output->base.backlight_current = drm_get_backlight(output); } weston_output_init(&output->base, &ec->base, x, y, connector->mmWidth, connector->mmHeight, 0); wl_list_insert(ec->base.output_list.prev, &output->base.link); output->scanout_buffer_destroy_listener.func = output_handle_scanout_buffer_destroy; output->pending_scanout_buffer_destroy_listener.func = output_handle_pending_scanout_buffer_destroy; output->pending_fs_surf_fb_id = 0; output->base.repaint = drm_output_repaint; output->base.destroy = drm_output_destroy; output->base.assign_planes = drm_assign_planes; output->base.set_dpms = drm_set_dpms; return 0; err_fb: glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, 0); err_bufs: for (i = 0; i < 2; i++) { if (output->fb_id[i] != -1) drmModeRmFB(ec->drm.fd, output->fb_id[i]); if (output->image[i]) ec->base.destroy_image(ec->base.display, output->image[i]); if (output->bo[i]) gbm_bo_destroy(output->bo[i]); } glBindRenderbuffer(GL_RENDERBUFFER, 0); glDeleteRenderbuffers(2, output->rbo); err_free: wl_list_for_each_safe(drm_mode, next, &output->base.mode_list, base.link) { wl_list_remove(&drm_mode->base.link); free(drm_mode); } drmModeFreeCrtc(output->original_crtc); ec->crtc_allocator &= ~(1 << output->crtc_id); ec->connector_allocator &= ~(1 << output->connector_id); free(output); return -1; } static void create_sprites(struct drm_compositor *ec) { struct drm_sprite *sprite; drmModePlaneRes *plane_res; drmModePlane *plane; int i; plane_res = drmModeGetPlaneResources(ec->drm.fd); if (!plane_res) { fprintf(stderr, "failed to get plane resources: %s\n", strerror(errno)); return; } for (i = 0; i < plane_res->count_planes; i++) { plane = drmModeGetPlane(ec->drm.fd, plane_res->planes[i]); if (!plane) continue; sprite = malloc(sizeof(*sprite) + ((sizeof(uint32_t)) * plane->count_formats)); if (!sprite) { fprintf(stderr, "%s: out of memory\n", __func__); free(plane); continue; } memset(sprite, 0, sizeof *sprite); sprite->possible_crtcs = plane->possible_crtcs; sprite->plane_id = plane->plane_id; sprite->surface = NULL; sprite->pending_surface = NULL; sprite->fb_id = 0; sprite->pending_fb_id = 0; sprite->destroy_listener.func = sprite_handle_buffer_destroy; sprite->pending_destroy_listener.func = sprite_handle_pending_buffer_destroy; sprite->compositor = ec; sprite->count_formats = plane->count_formats; memcpy(sprite->formats, plane->formats, plane->count_formats * sizeof(plane->formats[0])); drmModeFreePlane(plane); wl_list_insert(&ec->sprite_list, &sprite->link); } free(plane_res->planes); free(plane_res); } static void destroy_sprites(struct drm_compositor *compositor) { struct drm_sprite *sprite, *next; struct drm_output *output; output = container_of(compositor->base.output_list.next, struct drm_output, base.link); wl_list_for_each_safe(sprite, next, &compositor->sprite_list, link) { drmModeSetPlane(compositor->drm.fd, sprite->plane_id, output->crtc_id, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); drmModeRmFB(compositor->drm.fd, sprite->fb_id); free(sprite); } } static int create_outputs(struct drm_compositor *ec, int option_connector, struct udev_device *drm_device) { drmModeConnector *connector; drmModeRes *resources; int i; int x = 0, y = 0; resources = drmModeGetResources(ec->drm.fd); if (!resources) { fprintf(stderr, "drmModeGetResources failed\n"); return -1; } ec->crtcs = calloc(resources->count_crtcs, sizeof(uint32_t)); if (!ec->crtcs) { drmModeFreeResources(resources); return -1; } ec->num_crtcs = resources->count_crtcs; memcpy(ec->crtcs, resources->crtcs, sizeof(uint32_t) * ec->num_crtcs); for (i = 0; i < resources->count_connectors; i++) { connector = drmModeGetConnector(ec->drm.fd, resources->connectors[i]); if (connector == NULL) continue; if (connector->connection == DRM_MODE_CONNECTED && (option_connector == 0 || connector->connector_id == option_connector)) { if (create_output_for_connector(ec, resources, connector, x, y, drm_device) < 0) { drmModeFreeConnector(connector); continue; } x += container_of(ec->base.output_list.prev, struct weston_output, link)->current->width; } drmModeFreeConnector(connector); } if (wl_list_empty(&ec->base.output_list)) { fprintf(stderr, "No currently active connector found.\n"); drmModeFreeResources(resources); return -1; } drmModeFreeResources(resources); return 0; } static void update_outputs(struct drm_compositor *ec, struct udev_device *drm_device) { drmModeConnector *connector; drmModeRes *resources; struct drm_output *output, *next; int x = 0, y = 0; int x_offset = 0, y_offset = 0; uint32_t connected = 0, disconnects = 0; int i; resources = drmModeGetResources(ec->drm.fd); if (!resources) { fprintf(stderr, "drmModeGetResources failed\n"); return; } /* collect new connects */ for (i = 0; i < resources->count_connectors; i++) { int connector_id = resources->connectors[i]; connector = drmModeGetConnector(ec->drm.fd, connector_id); if (connector == NULL) continue; if (connector->connection != DRM_MODE_CONNECTED) { drmModeFreeConnector(connector); continue; } connected |= (1 << connector_id); if (!(ec->connector_allocator & (1 << connector_id))) { struct weston_output *last = container_of(ec->base.output_list.prev, struct weston_output, link); /* XXX: not yet needed, we die with 0 outputs */ if (!wl_list_empty(&ec->base.output_list)) x = last->x + last->current->width; else x = 0; y = 0; create_output_for_connector(ec, resources, connector, x, y, drm_device); printf("connector %d connected\n", connector_id); } drmModeFreeConnector(connector); } drmModeFreeResources(resources); disconnects = ec->connector_allocator & ~connected; if (disconnects) { wl_list_for_each_safe(output, next, &ec->base.output_list, base.link) { if (x_offset != 0 || y_offset != 0) { weston_output_move(&output->base, output->base.x - x_offset, output->base.y - y_offset); } if (disconnects & (1 << output->connector_id)) { disconnects &= ~(1 << output->connector_id); printf("connector %d disconnected\n", output->connector_id); x_offset += output->base.current->width; drm_output_destroy(&output->base); } } } /* FIXME: handle zero outputs, without terminating */ if (ec->connector_allocator == 0) wl_display_terminate(ec->base.wl_display); } static int udev_event_is_hotplug(struct drm_compositor *ec, struct udev_device *device) { const char *sysnum; const char *val; sysnum = udev_device_get_sysnum(device); if (!sysnum || atoi(sysnum) != ec->drm.id) return 0; val = udev_device_get_property_value(device, "HOTPLUG"); if (!val) return 0; return strcmp(val, "1") == 0; } static int udev_drm_event(int fd, uint32_t mask, void *data) { struct drm_compositor *ec = data; struct udev_device *event; event = udev_monitor_receive_device(ec->udev_monitor); if (udev_event_is_hotplug(ec, event)) update_outputs(ec, event); udev_device_unref(event); return 1; } static void drm_destroy(struct weston_compositor *ec) { struct drm_compositor *d = (struct drm_compositor *) ec; struct weston_input_device *input, *next; weston_compositor_shutdown(ec); gbm_device_destroy(d->gbm); destroy_sprites(d); drmDropMaster(d->drm.fd); tty_destroy(d->tty); wl_list_for_each_safe(input, next, &ec->input_device_list, link) evdev_input_destroy(input); free(d); } static void drm_compositor_set_modes(struct drm_compositor *compositor) { struct drm_output *output; struct drm_mode *drm_mode; int ret; wl_list_for_each(output, &compositor->base.output_list, base.link) { drm_mode = (struct drm_mode *) output->base.current; ret = drmModeSetCrtc(compositor->drm.fd, output->crtc_id, output->fb_id[output->current ^ 1], 0, 0, &output->connector_id, 1, &drm_mode->mode_info); if (ret < 0) { fprintf(stderr, "failed to set mode %dx%d for output at %d,%d: %m", drm_mode->base.width, drm_mode->base.height, output->base.x, output->base.y); } } } static void vt_func(struct weston_compositor *compositor, int event) { struct drm_compositor *ec = (struct drm_compositor *) compositor; struct weston_output *output; struct weston_input_device *input; struct drm_sprite *sprite; struct drm_output *drm_output; switch (event) { case TTY_ENTER_VT: compositor->focus = 1; if (drmSetMaster(ec->drm.fd)) { fprintf(stderr, "failed to set master: %m\n"); wl_display_terminate(compositor->wl_display); } compositor->state = ec->prev_state; drm_compositor_set_modes(ec); weston_compositor_damage_all(compositor); wl_list_for_each(input, &compositor->input_device_list, link) evdev_add_devices(ec->udev, input); break; case TTY_LEAVE_VT: compositor->focus = 0; ec->prev_state = compositor->state; compositor->state = WESTON_COMPOSITOR_SLEEPING; /* 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 SLEEPING state will prevent * further attemps at repainting. When we switch * back, we schedule a repaint, which will process * pending frame callbacks. */ wl_list_for_each(output, &ec->base.output_list, link) { output->repaint_needed = 0; drm_output_set_cursor(output, NULL); } drm_output = container_of(ec->base.output_list.next, struct drm_output, base.link); wl_list_for_each(sprite, &ec->sprite_list, link) drmModeSetPlane(ec->drm.fd, sprite->plane_id, drm_output->crtc_id, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); wl_list_for_each(input, &compositor->input_device_list, link) evdev_remove_devices(input); if (drmDropMaster(ec->drm.fd) < 0) fprintf(stderr, "failed to drop master: %m\n"); break; }; } static const char default_seat[] = "seat0"; static struct weston_compositor * drm_compositor_create(struct wl_display *display, int connector, const char *seat, int tty) { struct drm_compositor *ec; struct udev_enumerate *e; struct udev_list_entry *entry; struct udev_device *device, *drm_device; const char *path, *device_seat; struct wl_event_loop *loop; ec = malloc(sizeof *ec); if (ec == NULL) return NULL; memset(ec, 0, sizeof *ec); ec->udev = udev_new(); if (ec->udev == NULL) { fprintf(stderr, "failed to initialize udev context\n"); return NULL; } ec->base.wl_display = display; ec->tty = tty_create(&ec->base, vt_func, tty); if (!ec->tty) { fprintf(stderr, "failed to initialize tty\n"); free(ec); return NULL; } e = udev_enumerate_new(ec->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)) { path = udev_list_entry_get_name(entry); device = udev_device_new_from_syspath(ec->udev, path); device_seat = udev_device_get_property_value(device, "ID_SEAT"); if (!device_seat) device_seat = default_seat; if (strcmp(device_seat, seat) == 0) { drm_device = device; break; } udev_device_unref(device); } if (drm_device == NULL) { fprintf(stderr, "no drm device found\n"); return NULL; } if (init_egl(ec, drm_device) < 0) { fprintf(stderr, "failed to initialize egl\n"); return NULL; } ec->base.destroy = drm_destroy; ec->base.focus = 1; ec->prev_state = WESTON_COMPOSITOR_ACTIVE; glGenFramebuffers(1, &ec->base.fbo); glBindFramebuffer(GL_FRAMEBUFFER, ec->base.fbo); /* Can't init base class until we have a current egl context */ if (weston_compositor_init(&ec->base, display) < 0) return NULL; wl_list_init(&ec->sprite_list); create_sprites(ec); if (create_outputs(ec, connector, drm_device) < 0) { fprintf(stderr, "failed to create output for %s\n", path); return NULL; } udev_device_unref(drm_device); udev_enumerate_unref(e); path = NULL; evdev_input_create(&ec->base, ec->udev, seat); loop = wl_display_get_event_loop(ec->base.wl_display); ec->drm_source = wl_event_loop_add_fd(loop, ec->drm.fd, WL_EVENT_READABLE, on_drm_input, ec); ec->udev_monitor = udev_monitor_new_from_netlink(ec->udev, "udev"); if (ec->udev_monitor == NULL) { fprintf(stderr, "failed to intialize udev monitor\n"); return NULL; } udev_monitor_filter_add_match_subsystem_devtype(ec->udev_monitor, "drm", NULL); ec->udev_drm_source = wl_event_loop_add_fd(loop, udev_monitor_get_fd(ec->udev_monitor), WL_EVENT_READABLE, udev_drm_event, ec); if (udev_monitor_enable_receiving(ec->udev_monitor) < 0) { fprintf(stderr, "failed to enable udev-monitor receiving\n"); return NULL; } return &ec->base; } WL_EXPORT struct weston_compositor * backend_init(struct wl_display *display, int argc, char *argv[]) { int connector = 0, tty = 0; const char *seat = default_seat; const struct weston_option drm_options[] = { { WESTON_OPTION_INTEGER, "connector", 0, &connector }, { WESTON_OPTION_STRING, "seat", 0, &seat }, { WESTON_OPTION_INTEGER, "tty", 0, &tty }, }; parse_options(drm_options, ARRAY_LENGTH(drm_options), argc, argv); return drm_compositor_create(display, connector, seat, tty); }