Esempio n. 1
0
int drm_mode_setplane(struct drm_device *dev, void *data,
		      struct drm_file *file_priv)
{
	struct drm_mode_set_plane *plane_req = data;
	struct drm_plane *plane;
	struct drm_crtc *crtc = NULL;
	struct drm_framebuffer *fb = NULL;
	int ret;

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

	/*
	 * First, find the plane, crtc, and fb objects.  If not available,
	 * we don't bother to call the driver.
	 */
	plane = drm_plane_find(dev, file_priv, plane_req->plane_id);
	if (!plane) {
		DRM_DEBUG_KMS("Unknown plane ID %d\n",
			      plane_req->plane_id);
		return -ENOENT;
	}

	if (plane_req->fb_id) {
		fb = drm_framebuffer_lookup(dev, file_priv, plane_req->fb_id);
		if (!fb) {
			DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
				      plane_req->fb_id);
			return -ENOENT;
		}

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

	ret = setplane_internal(plane, crtc, fb,
				plane_req->crtc_x, plane_req->crtc_y,
				plane_req->crtc_w, plane_req->crtc_h,
				plane_req->src_x, plane_req->src_y,
				plane_req->src_w, plane_req->src_h);

	if (fb)
		drm_framebuffer_put(fb);

	return ret;
}
Esempio n. 2
0
static void hibmc_fbdev_destroy(struct hibmc_fbdev *fbdev)
{
	struct hibmc_framebuffer *gfb = fbdev->fb;
	struct drm_fb_helper *fbh = &fbdev->helper;

	drm_fb_helper_unregister_fbi(fbh);

	drm_fb_helper_fini(fbh);

	if (gfb)
		drm_framebuffer_put(&gfb->fb);
}
Esempio n. 3
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;
}
Esempio n. 4
0
/**
 * __drm_atomic_helper_plane_destroy_state - release plane state
 * @state: plane state object to release
 *
 * Releases all resources stored in the plane state without actually freeing
 * the memory of the plane state. This is useful for drivers that subclass the
 * plane state.
 */
void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state)
{
	if (state->fb)
		drm_framebuffer_put(state->fb);

	if (state->fence)
		dma_fence_put(state->fence);

	if (state->commit)
		drm_crtc_commit_put(state->commit);

	drm_property_blob_put(state->fb_damage_clips);
}
Esempio n. 5
0
void drm_writeback_cleanup_job(struct drm_writeback_job *job)
{
	struct drm_writeback_connector *connector = job->connector;
	const struct drm_connector_helper_funcs *funcs =
		connector->base.helper_private;

	if (job->prepared && funcs->cleanup_writeback_job)
		funcs->cleanup_writeback_job(connector, job);

	if (job->fb)
		drm_framebuffer_put(job->fb);

	kfree(job);
}
Esempio n. 6
0
static void vkms_plane_destroy_state(struct drm_plane *plane,
				     struct drm_plane_state *old_state)
{
	struct vkms_plane_state *vkms_state = to_vkms_plane_state(old_state);
	struct drm_crtc *crtc = vkms_state->base.crtc;

	if (crtc) {
		/* dropping the reference we acquired in
		 * vkms_primary_plane_update()
		 */
		if (drm_framebuffer_read_refcount(&vkms_state->crc_data->fb))
			drm_framebuffer_put(&vkms_state->crc_data->fb);
	}

	kfree(vkms_state->crc_data);
	vkms_state->crc_data = NULL;

	__drm_atomic_helper_plane_destroy_state(old_state);
	kfree(vkms_state);
}
Esempio n. 7
0
/**
 * drm_plane_force_disable - Forcibly disable a plane
 * @plane: plane to disable
 *
 * Forces the plane to be disabled.
 *
 * Used when the plane's current framebuffer is destroyed,
 * and when restoring fbdev mode.
 *
 * Note that this function is not suitable for atomic drivers, since it doesn't
 * wire through the lock acquisition context properly and hence can't handle
 * retries or driver private locks. You probably want to use
 * drm_atomic_helper_disable_plane() or
 * drm_atomic_helper_disable_planes_on_crtc() instead.
 */
void drm_plane_force_disable(struct drm_plane *plane)
{
	int ret;

	if (!plane->fb)
		return;

	WARN_ON(drm_drv_uses_atomic_modeset(plane->dev));

	plane->old_fb = plane->fb;
	ret = plane->funcs->disable_plane(plane, NULL);
	if (ret) {
		DRM_ERROR("failed to disable plane with busy fb\n");
		plane->old_fb = NULL;
		return;
	}
	/* disconnect the plane from the fb and crtc: */
	drm_framebuffer_put(plane->old_fb);
	plane->old_fb = NULL;
	plane->fb = NULL;
	plane->crtc = NULL;
}
Esempio n. 8
0
static int intelfb_create(struct drm_fb_helper *helper,
			  struct drm_fb_helper_surface_size *sizes)
{
	struct intel_fbdev *ifbdev =
		container_of(helper, struct intel_fbdev, helper);
	struct intel_framebuffer *intel_fb = ifbdev->fb;
	struct drm_device *dev = helper->dev;
	struct drm_i915_private *dev_priv = to_i915(dev);
	struct pci_dev *pdev = dev_priv->drm.pdev;
	struct i915_ggtt *ggtt = &dev_priv->ggtt;
	struct fb_info *info;
	struct drm_framebuffer *fb;
	struct i915_vma *vma;
	unsigned long flags = 0;
	bool prealloc = false;
	void __iomem *vaddr;
	int ret;

	if (intel_fb &&
	    (sizes->fb_width > intel_fb->base.width ||
	     sizes->fb_height > intel_fb->base.height)) {
		DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d),"
			      " releasing it\n",
			      intel_fb->base.width, intel_fb->base.height,
			      sizes->fb_width, sizes->fb_height);
		drm_framebuffer_put(&intel_fb->base);
		intel_fb = ifbdev->fb = NULL;
	}
	if (!intel_fb || WARN_ON(!intel_fb_obj(&intel_fb->base))) {
		DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n");
		ret = intelfb_alloc(helper, sizes);
		if (ret)
			return ret;
		intel_fb = ifbdev->fb;
	} else {
		DRM_DEBUG_KMS("re-using BIOS fb\n");
		prealloc = true;
		sizes->fb_width = intel_fb->base.width;
		sizes->fb_height = intel_fb->base.height;
	}

	mutex_lock(&dev->struct_mutex);
	intel_runtime_pm_get(dev_priv);

	/* Pin the GGTT vma for our access via info->screen_base.
	 * This also validates that any existing fb inherited from the
	 * BIOS is suitable for own access.
	 */
	vma = intel_pin_and_fence_fb_obj(&ifbdev->fb->base,
					 DRM_MODE_ROTATE_0,
					 false, &flags);
	if (IS_ERR(vma)) {
		ret = PTR_ERR(vma);
		goto out_unlock;
	}

	fb = &ifbdev->fb->base;
	intel_fb_obj_flush(intel_fb_obj(fb), ORIGIN_DIRTYFB);

	info = drm_fb_helper_alloc_fbi(helper);
	if (IS_ERR(info)) {
		DRM_ERROR("Failed to allocate fb_info\n");
		ret = PTR_ERR(info);
		goto out_unpin;
	}

	info->par = helper;

	ifbdev->helper.fb = fb;

	strcpy(info->fix.id, "inteldrmfb");

	info->fbops = &intelfb_ops;

	/* setup aperture base/size for vesafb takeover */
	info->apertures->ranges[0].base = dev->mode_config.fb_base;
	info->apertures->ranges[0].size = ggtt->mappable_end;

	info->fix.smem_start = dev->mode_config.fb_base + i915_ggtt_offset(vma);
	info->fix.smem_len = vma->node.size;

	vaddr = i915_vma_pin_iomap(vma);
	if (IS_ERR(vaddr)) {
		DRM_ERROR("Failed to remap framebuffer into virtual memory\n");
		ret = PTR_ERR(vaddr);
		goto out_unpin;
	}
	info->screen_base = vaddr;
	info->screen_size = vma->node.size;

	/* This driver doesn't need a VT switch to restore the mode on resume */
	info->skip_vt_switch = true;

	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
	drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);

	/* If the object is shmemfs backed, it will have given us zeroed pages.
	 * If the object is stolen however, it will be full of whatever
	 * garbage was left in there.
	 */
	if (intel_fb_obj(fb)->stolen && !prealloc)
		memset_io(info->screen_base, 0, info->screen_size);

	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */

	DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x\n",
		      fb->width, fb->height, i915_ggtt_offset(vma));
	ifbdev->vma = vma;
	ifbdev->vma_flags = flags;

	intel_runtime_pm_put(dev_priv);
	mutex_unlock(&dev->struct_mutex);
	vga_switcheroo_client_fb_set(pdev, info);
	return 0;

out_unpin:
	intel_unpin_fb_vma(vma, flags);
out_unlock:
	intel_runtime_pm_put(dev_priv);
	mutex_unlock(&dev->struct_mutex);
	return ret;
}
Esempio n. 9
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;
}