Exemplo n.º 1
0
/**
 * __drm_atomic_helper_plane_duplicate_state - copy atomic plane state
 * @plane: plane object
 * @state: atomic plane state
 *
 * Copies atomic state from a plane's current state. This is useful for
 * drivers that subclass the plane state.
 */
void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,
					       struct drm_plane_state *state)
{
	memcpy(state, plane->state, sizeof(*state));

	if (state->fb)
		drm_framebuffer_get(state->fb);

	state->fence = NULL;
	state->commit = NULL;
	state->fb_damage_clips = NULL;
}
Exemplo n.º 2
0
/*
 * __setplane_internal - setplane handler for internal callers
 *
 * This function will take a reference on the new fb for the plane
 * on success.
 *
 * src_{x,y,w,h} are provided in 16.16 fixed point format
 */
static int __setplane_internal(struct drm_plane *plane,
			       struct drm_crtc *crtc,
			       struct drm_framebuffer *fb,
			       int32_t crtc_x, int32_t crtc_y,
			       uint32_t crtc_w, uint32_t crtc_h,
			       /* src_{x,y,w,h} values are 16.16 fixed point */
			       uint32_t src_x, uint32_t src_y,
			       uint32_t src_w, uint32_t src_h,
			       struct drm_modeset_acquire_ctx *ctx)
{
	int ret = 0;

	WARN_ON(drm_drv_uses_atomic_modeset(plane->dev));

	/* No fb means shut it down */
	if (!fb) {
		plane->old_fb = plane->fb;
		ret = plane->funcs->disable_plane(plane, ctx);
		if (!ret) {
			plane->crtc = NULL;
			plane->fb = NULL;
		} else {
			plane->old_fb = NULL;
		}
		goto out;
	}

	ret = __setplane_check(plane, crtc, fb,
			       crtc_x, crtc_y, crtc_w, crtc_h,
			       src_x, src_y, src_w, src_h);
	if (ret)
		goto out;

	plane->old_fb = plane->fb;
	ret = plane->funcs->update_plane(plane, crtc, fb,
					 crtc_x, crtc_y, crtc_w, crtc_h,
					 src_x, src_y, src_w, src_h, ctx);
	if (!ret) {
		plane->crtc = crtc;
		plane->fb = fb;
		drm_framebuffer_get(plane->fb);
	} else {
		plane->old_fb = NULL;
	}

out:
	if (plane->old_fb)
		drm_framebuffer_put(plane->old_fb);
	plane->old_fb = NULL;

	return ret;
}
Exemplo n.º 3
0
static void vkms_plane_atomic_update(struct drm_plane *plane,
				     struct drm_plane_state *old_state)
{
	struct vkms_plane_state *vkms_plane_state;
	struct drm_framebuffer *fb = plane->state->fb;
	struct vkms_crc_data *crc_data;

	if (!plane->state->crtc || !fb)
		return;

	vkms_plane_state = to_vkms_plane_state(plane->state);

	crc_data = vkms_plane_state->crc_data;
	memcpy(&crc_data->src, &plane->state->src, sizeof(struct drm_rect));
	memcpy(&crc_data->dst, &plane->state->dst, sizeof(struct drm_rect));
	memcpy(&crc_data->fb, fb, sizeof(struct drm_framebuffer));
	drm_framebuffer_get(&crc_data->fb);
	crc_data->offset = fb->offsets[0];
	crc_data->pitch = fb->pitches[0];
	crc_data->cpp = fb->format->cpp[0];
}
Exemplo n.º 4
0
static int drm_mode_cursor_universal(struct drm_crtc *crtc,
				     struct drm_mode_cursor2 *req,
				     struct drm_file *file_priv,
				     struct drm_modeset_acquire_ctx *ctx)
{
	struct drm_device *dev = crtc->dev;
	struct drm_plane *plane = crtc->cursor;
	struct drm_framebuffer *fb = NULL;
	struct drm_mode_fb_cmd2 fbreq = {
		.width = req->width,
		.height = req->height,
		.pixel_format = DRM_FORMAT_ARGB8888,
		.pitches = { req->width * 4 },
		.handles = { req->handle },
	};
	int32_t crtc_x, crtc_y;
	uint32_t crtc_w = 0, crtc_h = 0;
	uint32_t src_w = 0, src_h = 0;
	int ret = 0;

	BUG_ON(!plane);
	WARN_ON(plane->crtc != crtc && plane->crtc != NULL);

	/*
	 * Obtain fb we'll be using (either new or existing) and take an extra
	 * reference to it if fb != null.  setplane will take care of dropping
	 * the reference if the plane update fails.
	 */
	if (req->flags & DRM_MODE_CURSOR_BO) {
		if (req->handle) {
			fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv);
			if (IS_ERR(fb)) {
				DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
				return PTR_ERR(fb);
			}

			fb->hot_x = req->hot_x;
			fb->hot_y = req->hot_y;
		} else {
			fb = NULL;
		}
	} else {
		if (plane->state)
			fb = plane->state->fb;
		else
			fb = plane->fb;

		if (fb)
			drm_framebuffer_get(fb);
	}

	if (req->flags & DRM_MODE_CURSOR_MOVE) {
		crtc_x = req->x;
		crtc_y = req->y;
	} else {
		crtc_x = crtc->cursor_x;
		crtc_y = crtc->cursor_y;
	}

	if (fb) {
		crtc_w = fb->width;
		crtc_h = fb->height;
		src_w = fb->width << 16;
		src_h = fb->height << 16;
	}

	if (drm_drv_uses_atomic_modeset(dev))
		ret = __setplane_atomic(plane, crtc, fb,
					crtc_x, crtc_y, crtc_w, crtc_h,
					0, 0, src_w, src_h, ctx);
	else
		ret = __setplane_internal(plane, crtc, fb,
					  crtc_x, crtc_y, crtc_w, crtc_h,
					  0, 0, src_w, src_h, ctx);

	if (fb)
		drm_framebuffer_put(fb);

	/* Update successful; save new cursor position, if necessary */
	if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
		crtc->cursor_x = req->x;
		crtc->cursor_y = req->y;
	}

	return ret;
}

static int drm_mode_cursor_common(struct drm_device *dev,
				  struct drm_mode_cursor2 *req,
				  struct drm_file *file_priv)
{
	struct drm_crtc *crtc;
	struct drm_modeset_acquire_ctx ctx;
	int ret = 0;

	if (!drm_core_check_feature(dev, DRIVER_MODESET))
		return -EOPNOTSUPP;

	if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
		return -EINVAL;

	crtc = drm_crtc_find(dev, file_priv, req->crtc_id);
	if (!crtc) {
		DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
		return -ENOENT;
	}

	drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
retry:
	ret = drm_modeset_lock(&crtc->mutex, &ctx);
	if (ret)
		goto out;
	/*
	 * If this crtc has a universal cursor plane, call that plane's update
	 * handler rather than using legacy cursor handlers.
	 */
	if (crtc->cursor) {
		ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
		if (ret)
			goto out;

		ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx);
		goto out;
	}

	if (req->flags & DRM_MODE_CURSOR_BO) {
		if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
			ret = -ENXIO;
			goto out;
		}
		/* Turns off the cursor if handle is 0 */
		if (crtc->funcs->cursor_set2)
			ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
						      req->width, req->height, req->hot_x, req->hot_y);
		else
			ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
						      req->width, req->height);
	}

	if (req->flags & DRM_MODE_CURSOR_MOVE) {
		if (crtc->funcs->cursor_move) {
			ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
		} else {
			ret = -EFAULT;
			goto out;
		}
	}
out:
	if (ret == -EDEADLK) {
		ret = drm_modeset_backoff(&ctx);
		if (!ret)
			goto retry;
	}

	drm_modeset_drop_locks(&ctx);
	drm_modeset_acquire_fini(&ctx);

	return ret;

}


int drm_mode_cursor_ioctl(struct drm_device *dev,
			  void *data, struct drm_file *file_priv)
{
	struct drm_mode_cursor *req = data;
	struct drm_mode_cursor2 new_req;

	memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
	new_req.hot_x = new_req.hot_y = 0;

	return drm_mode_cursor_common(dev, &new_req, file_priv);
}

/*
 * Set the cursor configuration based on user request. This implements the 2nd
 * version of the cursor ioctl, which allows userspace to additionally specify
 * the hotspot of the pointer.
 */
int drm_mode_cursor2_ioctl(struct drm_device *dev,
			   void *data, struct drm_file *file_priv)
{
	struct drm_mode_cursor2 *req = data;

	return drm_mode_cursor_common(dev, req, file_priv);
}

int drm_mode_page_flip_ioctl(struct drm_device *dev,
			     void *data, struct drm_file *file_priv)
{
	struct drm_mode_crtc_page_flip_target *page_flip = data;
	struct drm_crtc *crtc;
	struct drm_plane *plane;
	struct drm_framebuffer *fb = NULL, *old_fb;
	struct drm_pending_vblank_event *e = NULL;
	u32 target_vblank = page_flip->sequence;
	struct drm_modeset_acquire_ctx ctx;
	int ret = -EINVAL;

	if (!drm_core_check_feature(dev, DRIVER_MODESET))
		return -EOPNOTSUPP;

	if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS)
		return -EINVAL;

	if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET))
		return -EINVAL;

	/* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags
	 * can be specified
	 */
	if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET)
		return -EINVAL;

	if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
		return -EINVAL;

	crtc = drm_crtc_find(dev, file_priv, page_flip->crtc_id);
	if (!crtc)
		return -ENOENT;

	plane = crtc->primary;

	if (crtc->funcs->page_flip_target) {
		u32 current_vblank;
		int r;

		r = drm_crtc_vblank_get(crtc);
		if (r)
			return r;

		current_vblank = (u32)drm_crtc_vblank_count(crtc);

		switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) {
		case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE:
			if ((int)(target_vblank - current_vblank) > 1) {
				DRM_DEBUG("Invalid absolute flip target %u, "
					  "must be <= %u\n", target_vblank,
					  current_vblank + 1);
				drm_crtc_vblank_put(crtc);
				return -EINVAL;
			}
			break;
		case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE:
			if (target_vblank != 0 && target_vblank != 1) {
				DRM_DEBUG("Invalid relative flip target %u, "
					  "must be 0 or 1\n", target_vblank);
				drm_crtc_vblank_put(crtc);
				return -EINVAL;
			}
			target_vblank += current_vblank;
			break;
		default:
			target_vblank = current_vblank +
				!(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC);
			break;
		}
	} else if (crtc->funcs->page_flip == NULL ||
		   (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) {
		return -EINVAL;
	}

	drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
retry:
	ret = drm_modeset_lock(&crtc->mutex, &ctx);
	if (ret)
		goto out;
	ret = drm_modeset_lock(&plane->mutex, &ctx);
	if (ret)
		goto out;

	if (plane->state)
		old_fb = plane->state->fb;
	else
		old_fb = plane->fb;

	if (old_fb == NULL) {
		/* The framebuffer is currently unbound, presumably
		 * due to a hotplug event, that userspace has not
		 * yet discovered.
		 */
		ret = -EBUSY;
		goto out;
	}

	fb = drm_framebuffer_lookup(dev, file_priv, page_flip->fb_id);
	if (!fb) {
		ret = -ENOENT;
		goto out;
	}

	if (plane->state) {
		const struct drm_plane_state *state = plane->state;

		ret = drm_framebuffer_check_src_coords(state->src_x,
						       state->src_y,
						       state->src_w,
						       state->src_h,
						       fb);
	} else {
		ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y,
					      &crtc->mode, fb);
	}
	if (ret)
		goto out;

	if (old_fb->format != fb->format) {
		DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
		ret = -EINVAL;
		goto out;
	}

	if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
		e = kzalloc(sizeof *e, GFP_KERNEL);
		if (!e) {
			ret = -ENOMEM;
			goto out;
		}

		e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
		e->event.base.length = sizeof(e->event);
		e->event.vbl.user_data = page_flip->user_data;
		e->event.vbl.crtc_id = crtc->base.id;

		ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
		if (ret) {
			kfree(e);
			e = NULL;
			goto out;
		}
	}

	plane->old_fb = plane->fb;
	if (crtc->funcs->page_flip_target)
		ret = crtc->funcs->page_flip_target(crtc, fb, e,
						    page_flip->flags,
						    target_vblank,
						    &ctx);
	else
		ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags,
					     &ctx);
	if (ret) {
		if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
			drm_event_cancel_free(dev, &e->base);
		/* Keep the old fb, don't unref it. */
		plane->old_fb = NULL;
	} else {
		if (!plane->state) {
			plane->fb = fb;
			drm_framebuffer_get(fb);
		}
	}

out:
	if (fb)
		drm_framebuffer_put(fb);
	if (plane->old_fb)
		drm_framebuffer_put(plane->old_fb);
	plane->old_fb = NULL;

	if (ret == -EDEADLK) {
		ret = drm_modeset_backoff(&ctx);
		if (!ret)
			goto retry;
	}

	drm_modeset_drop_locks(&ctx);
	drm_modeset_acquire_fini(&ctx);

	if (ret && crtc->funcs->page_flip_target)
		drm_crtc_vblank_put(crtc);

	return ret;
}