drm: reorganise drm tree to be more future proof.

With the coming of kernel based modesetting and the memory manager stuff,
the everything in one directory approach was getting very ugly and
starting to be unmanageable.

This restructures the drm along the lines of other kernel components.

It creates a drivers/gpu/drm directory and moves the hw drivers into
subdirectores. It moves the includes into an include/drm, and
sets up the unifdef for the userspace headers we should be exporting.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 192 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_drawable.c b/drivers/gpu/drm/drm_drawable.c
new file mode 100644
index 000000000000..1839c57663c5
--- /dev/null
+++ b/drivers/gpu/drm/drm_drawable.c
@@ -0,0 +1,192 @@
+/**
+ * \file drm_drawable.c
+ * IOCTLs for drawables
+ *
+ * \author Rickard E. (Rik) Faith <faith@valinux.com>
+ * \author Gareth Hughes <gareth@valinux.com>
+ * \author Michel Dänzer <michel@tungstengraphics.com>
+ */
+
+/*
+ * 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.
+ * Copyright 2006 Tungsten Graphics, Inc., Bismarck, North Dakota.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "drmP.h"
+
+/**
+ * Allocate drawable ID and memory to store information about it.
+ */
+int drm_adddraw(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	unsigned long irqflags;
+	struct drm_draw *draw = data;
+	int new_id = 0;
+	int ret;
+
+again:
+	if (idr_pre_get(&dev->drw_idr, GFP_KERNEL) == 0) {
+		DRM_ERROR("Out of memory expanding drawable idr\n");
+		return -ENOMEM;
+	}
+
+	spin_lock_irqsave(&dev->drw_lock, irqflags);
+	ret = idr_get_new_above(&dev->drw_idr, NULL, 1, &new_id);
+	if (ret == -EAGAIN) {
+		spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+		goto again;
+	}
+
+	spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+
+	draw->handle = new_id;
+
+	DRM_DEBUG("%d\n", draw->handle);
+
+	return 0;
+}
+
+/**
+ * Free drawable ID and memory to store information about it.
+ */
+int drm_rmdraw(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	struct drm_draw *draw = data;
+	unsigned long irqflags;
+
+	spin_lock_irqsave(&dev->drw_lock, irqflags);
+
+	drm_free(drm_get_drawable_info(dev, draw->handle),
+		 sizeof(struct drm_drawable_info), DRM_MEM_BUFS);
+
+	idr_remove(&dev->drw_idr, draw->handle);
+
+	spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+	DRM_DEBUG("%d\n", draw->handle);
+	return 0;
+}
+
+int drm_update_drawable_info(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	struct drm_update_draw *update = data;
+	unsigned long irqflags;
+	struct drm_clip_rect *rects;
+	struct drm_drawable_info *info;
+	int err;
+
+	info = idr_find(&dev->drw_idr, update->handle);
+	if (!info) {
+		info = drm_calloc(1, sizeof(*info), DRM_MEM_BUFS);
+		if (!info)
+			return -ENOMEM;
+		if (IS_ERR(idr_replace(&dev->drw_idr, info, update->handle))) {
+			DRM_ERROR("No such drawable %d\n", update->handle);
+			drm_free(info, sizeof(*info), DRM_MEM_BUFS);
+			return -EINVAL;
+		}
+	}
+
+	switch (update->type) {
+	case DRM_DRAWABLE_CLIPRECTS:
+		if (update->num != info->num_rects) {
+			rects = drm_alloc(update->num * sizeof(struct drm_clip_rect),
+					 DRM_MEM_BUFS);
+		} else
+			rects = info->rects;
+
+		if (update->num && !rects) {
+			DRM_ERROR("Failed to allocate cliprect memory\n");
+			err = -ENOMEM;
+			goto error;
+		}
+
+		if (update->num && DRM_COPY_FROM_USER(rects,
+						     (struct drm_clip_rect __user *)
+						     (unsigned long)update->data,
+						     update->num *
+						     sizeof(*rects))) {
+			DRM_ERROR("Failed to copy cliprects from userspace\n");
+			err = -EFAULT;
+			goto error;
+		}
+
+		spin_lock_irqsave(&dev->drw_lock, irqflags);
+
+		if (rects != info->rects) {
+			drm_free(info->rects, info->num_rects *
+				 sizeof(struct drm_clip_rect), DRM_MEM_BUFS);
+		}
+
+		info->rects = rects;
+		info->num_rects = update->num;
+
+		spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+
+		DRM_DEBUG("Updated %d cliprects for drawable %d\n",
+			  info->num_rects, update->handle);
+		break;
+	default:
+		DRM_ERROR("Invalid update type %d\n", update->type);
+		return -EINVAL;
+	}
+
+	return 0;
+
+error:
+	if (rects != info->rects)
+		drm_free(rects, update->num * sizeof(struct drm_clip_rect),
+			 DRM_MEM_BUFS);
+
+	return err;
+}
+
+/**
+ * Caller must hold the drawable spinlock!
+ */
+struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev, drm_drawable_t id)
+{
+	return idr_find(&dev->drw_idr, id);
+}
+EXPORT_SYMBOL(drm_get_drawable_info);
+
+static int drm_drawable_free(int idr, void *p, void *data)
+{
+	struct drm_drawable_info *info = p;
+
+	if (info) {
+		drm_free(info->rects, info->num_rects *
+			 sizeof(struct drm_clip_rect), DRM_MEM_BUFS);
+		drm_free(info, sizeof(*info), DRM_MEM_BUFS);
+	}
+
+	return 0;
+}
+
+void drm_drawable_free_all(struct drm_device *dev)
+{
+	idr_for_each(&dev->drw_idr, drm_drawable_free, NULL);
+	idr_remove_all(&dev->drw_idr);
+}