1 files changed, 255 insertions, 102 deletions

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index fe94cc10cd3..41c7212081b 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -41,6 +41,10 @@
 
 #include "drm_crtc_internal.h"
 
+static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
+							struct drm_mode_fb_cmd2 *r,
+							struct drm_file *file_priv);
+
 /**
  * drm_modeset_lock_all - take all modeset locks
  * @dev: drm device
@@ -723,7 +727,7 @@ DEFINE_WW_CLASS(crtc_ww_class);
  */
 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
 			      struct drm_plane *primary,
-			      void *cursor,
+			      struct drm_plane *cursor,
 			      const struct drm_crtc_funcs *funcs)
 {
 	struct drm_mode_config *config = &dev->mode_config;
@@ -748,8 +752,11 @@ int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
 	config->num_crtc++;
 
 	crtc->primary = primary;
+	crtc->cursor = cursor;
 	if (primary)
 		primary->possible_crtcs = 1 << drm_crtc_index(crtc);
+	if (cursor)
+		cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
 
  out:
 	drm_modeset_unlock_all(dev);
@@ -2118,45 +2125,32 @@ out:
 	return ret;
 }
 
-/**
- * drm_mode_setplane - configure a plane's configuration
- * @dev: DRM device
- * @data: ioctl data*
- * @file_priv: DRM file info
+/*
+ * setplane_internal - setplane handler for internal callers
  *
- * Set plane configuration, including placement, fb, scaling, and other factors.
- * Or pass a NULL fb to disable.
+ * Note that we assume an extra reference has already been taken on fb.  If the
+ * update fails, this reference will be dropped before return; if it succeeds,
+ * the previous framebuffer (if any) will be unreferenced instead.
  *
- * Returns:
- * Zero on success, errno on failure.
+ * src_{x,y,w,h} are provided in 16.16 fixed point format
  */
-int drm_mode_setplane(struct drm_device *dev, void *data,
-		      struct drm_file *file_priv)
+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_mode_set_plane *plane_req = data;
-	struct drm_plane *plane;
-	struct drm_crtc *crtc;
-	struct drm_framebuffer *fb = NULL, *old_fb = NULL;
+	struct drm_device *dev = plane->dev;
+	struct drm_framebuffer *old_fb = NULL;
 	int ret = 0;
 	unsigned int fb_width, fb_height;
 	int i;
 
-	if (!drm_core_check_feature(dev, DRIVER_MODESET))
-		return -EINVAL;
-
-	/*
-	 * First, find the plane, crtc, and fb objects.  If not available,
-	 * we don't bother to call the driver.
-	 */
-	plane = drm_plane_find(dev, plane_req->plane_id);
-	if (!plane) {
-		DRM_DEBUG_KMS("Unknown plane ID %d\n",
-			      plane_req->plane_id);
-		return -ENOENT;
-	}
-
 	/* No fb means shut it down */
-	if (!plane_req->fb_id) {
+	if (!fb) {
 		drm_modeset_lock_all(dev);
 		old_fb = plane->fb;
 		ret = plane->funcs->disable_plane(plane);
@@ -2170,14 +2164,6 @@ int drm_mode_setplane(struct drm_device *dev, void *data,
 		goto out;
 	}
 
-	crtc = drm_crtc_find(dev, plane_req->crtc_id);
-	if (!crtc) {
-		DRM_DEBUG_KMS("Unknown crtc ID %d\n",
-			      plane_req->crtc_id);
-		ret = -ENOENT;
-		goto out;
-	}
-
 	/* Check whether this plane is usable on this CRTC */
 	if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
 		DRM_DEBUG_KMS("Invalid crtc for plane\n");
@@ -2185,14 +2171,6 @@ int drm_mode_setplane(struct drm_device *dev, void *data,
 		goto out;
 	}
 
-	fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
-	if (!fb) {
-		DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
-			      plane_req->fb_id);
-		ret = -ENOENT;
-		goto out;
-	}
-
 	/* Check whether this plane supports the fb pixel format. */
 	for (i = 0; i < plane->format_count; i++)
 		if (fb->pixel_format == plane->format_types[i])
@@ -2208,43 +2186,25 @@ int drm_mode_setplane(struct drm_device *dev, void *data,
 	fb_height = fb->height << 16;
 
 	/* Make sure source coordinates are inside the fb. */
-	if (plane_req->src_w > fb_width ||
-	    plane_req->src_x > fb_width - plane_req->src_w ||
-	    plane_req->src_h > fb_height ||
-	    plane_req->src_y > fb_height - plane_req->src_h) {
+	if (src_w > fb_width ||
+	    src_x > fb_width - src_w ||
+	    src_h > fb_height ||
+	    src_y > fb_height - src_h) {
 		DRM_DEBUG_KMS("Invalid source coordinates "
 			      "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
-			      plane_req->src_w >> 16,
-			      ((plane_req->src_w & 0xffff) * 15625) >> 10,
-			      plane_req->src_h >> 16,
-			      ((plane_req->src_h & 0xffff) * 15625) >> 10,
-			      plane_req->src_x >> 16,
-			      ((plane_req->src_x & 0xffff) * 15625) >> 10,
-			      plane_req->src_y >> 16,
-			      ((plane_req->src_y & 0xffff) * 15625) >> 10);
+			      src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
+			      src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
+			      src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
+			      src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
 		ret = -ENOSPC;
 		goto out;
 	}
 
-	/* Give drivers some help against integer overflows */
-	if (plane_req->crtc_w > INT_MAX ||
-	    plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
-	    plane_req->crtc_h > INT_MAX ||
-	    plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
-		DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
-			      plane_req->crtc_w, plane_req->crtc_h,
-			      plane_req->crtc_x, plane_req->crtc_y);
-		ret = -ERANGE;
-		goto out;
-	}
-
 	drm_modeset_lock_all(dev);
 	old_fb = plane->fb;
 	ret = plane->funcs->update_plane(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);
+					 crtc_x, crtc_y, crtc_w, crtc_h,
+					 src_x, src_y, src_w, src_h);
 	if (!ret) {
 		plane->crtc = crtc;
 		plane->fb = fb;
@@ -2261,6 +2221,85 @@ out:
 		drm_framebuffer_unreference(old_fb);
 
 	return ret;
+
+}
+
+/**
+ * drm_mode_setplane - configure a plane's configuration
+ * @dev: DRM device
+ * @data: ioctl data*
+ * @file_priv: DRM file info
+ *
+ * Set plane configuration, including placement, fb, scaling, and other factors.
+ * Or pass a NULL fb to disable (planes may be disabled without providing a
+ * valid crtc).
+ *
+ * Returns:
+ * Zero on success, errno on failure.
+ */
+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_mode_object *obj;
+	struct drm_plane *plane;
+	struct drm_crtc *crtc = NULL;
+	struct drm_framebuffer *fb = NULL;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	/* Give drivers some help against integer overflows */
+	if (plane_req->crtc_w > INT_MAX ||
+	    plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
+	    plane_req->crtc_h > INT_MAX ||
+	    plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
+		DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
+			      plane_req->crtc_w, plane_req->crtc_h,
+			      plane_req->crtc_x, plane_req->crtc_y);
+		return -ERANGE;
+	}
+
+	/*
+	 * First, find the plane, crtc, and fb objects.  If not available,
+	 * we don't bother to call the driver.
+	 */
+	obj = drm_mode_object_find(dev, plane_req->plane_id,
+				   DRM_MODE_OBJECT_PLANE);
+	if (!obj) {
+		DRM_DEBUG_KMS("Unknown plane ID %d\n",
+			      plane_req->plane_id);
+		return -ENOENT;
+	}
+	plane = obj_to_plane(obj);
+
+	if (plane_req->fb_id) {
+		fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
+		if (!fb) {
+			DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
+				      plane_req->fb_id);
+			return -ENOENT;
+		}
+
+		obj = drm_mode_object_find(dev, plane_req->crtc_id,
+					   DRM_MODE_OBJECT_CRTC);
+		if (!obj) {
+			DRM_DEBUG_KMS("Unknown crtc ID %d\n",
+				      plane_req->crtc_id);
+			return -ENOENT;
+		}
+		crtc = obj_to_crtc(obj);
+	}
+
+	/*
+	 * setplane_internal will take care of deref'ing either the old or new
+	 * framebuffer depending on success.
+	 */
+	return 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);
 }
 
 /**
@@ -2509,6 +2548,102 @@ out:
 	return ret;
 }
 
+/**
+ * drm_mode_cursor_universal - translate legacy cursor ioctl call into a
+ *     universal plane handler call
+ * @crtc: crtc to update cursor for
+ * @req: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Legacy cursor ioctl's work directly with driver buffer handles.  To
+ * translate legacy ioctl calls into universal plane handler calls, we need to
+ * wrap the native buffer handle in a drm_framebuffer.
+ *
+ * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
+ * buffer with a pitch of 4*width; the universal plane interface should be used
+ * directly in cases where the hardware can support other buffer settings and
+ * userspace wants to make use of these capabilities.
+ *
+ * Returns:
+ * Zero on success, errno on failure.
+ */
+static int drm_mode_cursor_universal(struct drm_crtc *crtc,
+				     struct drm_mode_cursor2 *req,
+				     struct drm_file *file_priv)
+{
+	struct drm_device *dev = crtc->dev;
+	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(!crtc->cursor);
+
+	/*
+	 * 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 = add_framebuffer_internal(dev, &fbreq, file_priv);
+			if (IS_ERR(fb)) {
+				DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
+				return PTR_ERR(fb);
+			}
+
+			drm_framebuffer_reference(fb);
+		} else {
+			fb = NULL;
+		}
+	} else {
+		mutex_lock(&dev->mode_config.mutex);
+		fb = crtc->cursor->fb;
+		if (fb)
+			drm_framebuffer_reference(fb);
+		mutex_unlock(&dev->mode_config.mutex);
+	}
+
+	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;
+	}
+
+	/*
+	 * setplane_internal will take care of deref'ing either the old or new
+	 * framebuffer depending on success.
+	 */
+	ret = setplane_internal(crtc->cursor, crtc, fb,
+				crtc_x, crtc_y, crtc_w, crtc_h,
+				0, 0, src_w, src_h);
+
+	/* 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)
@@ -2528,6 +2663,13 @@ static int drm_mode_cursor_common(struct drm_device *dev,
 		return -ENOENT;
 	}
 
+	/*
+	 * If this crtc has a universal cursor plane, call that plane's update
+	 * handler rather than using legacy cursor handlers.
+	 */
+	if (crtc->cursor)
+		return drm_mode_cursor_universal(crtc, req, file_priv);
+
 	drm_modeset_lock(&crtc->mutex, NULL);
 	if (req->flags & DRM_MODE_CURSOR_BO) {
 		if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
@@ -2827,56 +2969,38 @@ static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
 	return 0;
 }
 
-/**
- * drm_mode_addfb2 - add an FB to the graphics configuration
- * @dev: drm device for the ioctl
- * @data: data pointer for the ioctl
- * @file_priv: drm file for the ioctl call
- *
- * Add a new FB to the specified CRTC, given a user request with format. This is
- * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
- * and uses fourcc codes as pixel format specifiers.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, errno on failure.
- */
-int drm_mode_addfb2(struct drm_device *dev,
-		    void *data, struct drm_file *file_priv)
+static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
+							struct drm_mode_fb_cmd2 *r,
+							struct drm_file *file_priv)
 {
-	struct drm_mode_fb_cmd2 *r = data;
 	struct drm_mode_config *config = &dev->mode_config;
 	struct drm_framebuffer *fb;
 	int ret;
 
-	if (!drm_core_check_feature(dev, DRIVER_MODESET))
-		return -EINVAL;
-
 	if (r->flags & ~DRM_MODE_FB_INTERLACED) {
 		DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
-		return -EINVAL;
+		return ERR_PTR(-EINVAL);
 	}
 
 	if ((config->min_width > r->width) || (r->width > config->max_width)) {
 		DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
 			  r->width, config->min_width, config->max_width);
-		return -EINVAL;
+		return ERR_PTR(-EINVAL);
 	}
 	if ((config->min_height > r->height) || (r->height > config->max_height)) {
 		DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
 			  r->height, config->min_height, config->max_height);
-		return -EINVAL;
+		return ERR_PTR(-EINVAL);
 	}
 
 	ret = framebuffer_check(r);
 	if (ret)
-		return ret;
+		return ERR_PTR(ret);
 
 	fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
 	if (IS_ERR(fb)) {
 		DRM_DEBUG_KMS("could not create framebuffer\n");
-		return PTR_ERR(fb);
+		return fb;
 	}
 
 	mutex_lock(&file_priv->fbs_lock);
@@ -2885,8 +3009,37 @@ int drm_mode_addfb2(struct drm_device *dev,
 	DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
 	mutex_unlock(&file_priv->fbs_lock);
 
+	return fb;
+}
 
-	return ret;
+/**
+ * drm_mode_addfb2 - add an FB to the graphics configuration
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Add a new FB to the specified CRTC, given a user request with format. This is
+ * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
+ * and uses fourcc codes as pixel format specifiers.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, errno on failure.
+ */
+int drm_mode_addfb2(struct drm_device *dev,
+		    void *data, struct drm_file *file_priv)
+{
+	struct drm_framebuffer *fb;
+
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		return -EINVAL;
+
+	fb = add_framebuffer_internal(dev, data, file_priv);
+	if (IS_ERR(fb))
+		return PTR_ERR(fb);
+
+	return 0;
 }
 
 /**