1 files changed, 132 insertions, 11 deletions

diff --git a/sys/dev/drm/drm_drawable.c b/sys/dev/drm/drm_drawable.c
index 8de8095..1223a41 100644
--- a/sys/dev/drm/drm_drawable.c
+++ b/sys/dev/drm/drm_drawable.c
@@ -1,6 +1,3 @@
-/* drm_drawable.h -- IOCTLs for drawables -*- linux-c -*-
- * Created: Tue Feb  2 08:37:54 1999 by faith@valinux.com
- */
 /*-
  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -34,21 +31,145 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+/** @file drm_drawable.c
+ * This file implements ioctls to store information along with DRM drawables,
+ * such as the current set of cliprects for vblank-synced buffer swaps.
+ */
+
 #include "dev/drm/drmP.h"
 
-int drm_adddraw(DRM_IOCTL_ARGS)
+struct bsd_drm_drawable_info {
+	struct drm_drawable_info info;
+	int handle;
+	RB_ENTRY(bsd_drm_drawable_info) tree;
+};
+
+static int
+drm_drawable_compare(struct bsd_drm_drawable_info *a,
+    struct bsd_drm_drawable_info *b)
+{
+	if (a->handle > b->handle)
+		return 1;
+	if (a->handle < b->handle)
+		return -1;
+	return 0;
+}
+
+RB_GENERATE_STATIC(drawable_tree, bsd_drm_drawable_info, tree,
+    drm_drawable_compare);
+
+struct drm_drawable_info *
+drm_get_drawable_info(struct drm_device *dev, int handle)
+{
+	struct bsd_drm_drawable_info find, *result;
+
+	find.handle = handle;
+	result = RB_FIND(drawable_tree, &dev->drw_head, &find);
+
+	return &result->info;
+}
+
+int drm_adddraw(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
-	drm_draw_t draw;
+	drm_draw_t *draw = data;
+	struct bsd_drm_drawable_info *info;
+
+	info = drm_calloc(1, sizeof(struct bsd_drm_drawable_info),
+	    DRM_MEM_DRAWABLE);
+	if (info == NULL)
+		return ENOMEM;
 
-	draw.handle = 0;	/* NOOP */
-	DRM_DEBUG("%d\n", draw.handle);
-	
-	DRM_COPY_TO_USER_IOCTL( (drm_draw_t *)data, draw, sizeof(draw) );
+	info->handle = alloc_unr(dev->drw_unrhdr);
+	DRM_SPINLOCK(&dev->drw_lock);
+	RB_INSERT(drawable_tree, &dev->drw_head, info);
+	draw->handle = info->handle;
+	DRM_SPINUNLOCK(&dev->drw_lock);
+
+	DRM_DEBUG("%d\n", draw->handle);
 
 	return 0;
 }
 
-int drm_rmdraw(DRM_IOCTL_ARGS)
+int drm_rmdraw(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	drm_draw_t *draw = (drm_draw_t *)data;
+	struct drm_drawable_info *info;
+
+	DRM_SPINLOCK(&dev->drw_lock);
+	info = drm_get_drawable_info(dev, draw->handle);
+	if (info != NULL) {
+		RB_REMOVE(drawable_tree, &dev->drw_head,
+		    (struct bsd_drm_drawable_info *)info);
+		DRM_SPINUNLOCK(&dev->drw_lock);
+		free_unr(dev->drw_unrhdr, draw->handle);
+		drm_free(info, sizeof(struct bsd_drm_drawable_info),
+		    DRM_MEM_DRAWABLE);
+		return 0;
+	} else {
+		DRM_SPINUNLOCK(&dev->drw_lock);
+		return EINVAL;
+	}
+}
+
+int drm_update_draw(struct drm_device *dev, void *data,
+		    struct drm_file *file_priv)
 {
-	return 0;		/* NOOP */
+	struct drm_drawable_info *info;
+	struct drm_update_draw *update = (struct drm_update_draw *)data;
+	int ret;
+
+	info = drm_get_drawable_info(dev, update->handle);
+	if (info == NULL)
+		return EINVAL;
+
+	switch (update->type) {
+	case DRM_DRAWABLE_CLIPRECTS:
+		DRM_SPINLOCK(&dev->drw_lock);
+		if (update->num != info->num_rects) {
+			drm_free(info->rects,
+			    sizeof(*info->rects) * info->num_rects,
+			    DRM_MEM_DRAWABLE);
+			info->rects = NULL;
+			info->num_rects = 0;
+		}
+		if (update->num == 0) {
+			DRM_SPINUNLOCK(&dev->drw_lock);
+			return 0;
+		}
+		if (info->rects == NULL) {
+			info->rects = drm_alloc(sizeof(*info->rects) *
+			    update->num, DRM_MEM_DRAWABLE);
+			if (info->rects == NULL) {
+				DRM_SPINUNLOCK(&dev->drw_lock);
+				return ENOMEM;
+			}
+			info->num_rects = update->num;
+		}
+		/* For some reason the pointer arg is unsigned long long. */
+		ret = copyin((void *)(intptr_t)update->data, info->rects,
+		    sizeof(*info->rects) * info->num_rects);
+		DRM_SPINUNLOCK(&dev->drw_lock);
+		return ret;
+	default:
+		return EINVAL;
+	}
+}
+
+void drm_drawable_free_all(struct drm_device *dev)
+{
+	struct bsd_drm_drawable_info *info, *next;
+
+	DRM_SPINLOCK(&dev->drw_lock);
+	for (info = RB_MIN(drawable_tree, &dev->drw_head);
+	    info != NULL ; info = next) {
+		next = RB_NEXT(drawable_tree, &dev->drw_head, info);
+		RB_REMOVE(drawable_tree, &dev->drw_head,
+		    (struct bsd_drm_drawable_info *)info);
+		DRM_SPINUNLOCK(&dev->drw_lock);
+		free_unr(dev->drw_unrhdr, info->handle);
+		drm_free(info, sizeof(struct bsd_drm_drawable_info),
+		    DRM_MEM_DRAWABLE);
+		DRM_SPINLOCK(&dev->drw_lock);
+	}
+	DRM_SPINUNLOCK(&dev->drw_lock);
 }