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/*

 * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.

 * Copyright 2001-2003 S3 Graphics, Inc. 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, sub license,

 * 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 NON-INFRINGEMENT. IN NO EVENT SHALL

 * VIA, S3 GRAPHICS, 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.

 */

#define __NO_VERSION__

#include "via.h"

#include "drmP.h"

#include "via_drv.h"

int via_do_init_map(drm_device_t *dev, drm_via_init_t *init)

{

        drm_via_private_t *dev_priv;

        struct list_head *list;

        DRM_DEBUG("%s\n", __FUNCTION__);

        dev_priv = DRM(alloc)(sizeof(drm_via_private_t), DRM_MEM_DRIVER);

        if (dev_priv == NULL)

                return -ENOMEM;

        memset(dev_priv, 0, sizeof(drm_via_private_t));

        list_for_each(list, &dev->maplist->head) {

                drm_map_list_t *r_list = (drm_map_list_t *)list;

                if ( r_list->map &&

                    r_list->map->type == _DRM_SHM &&

                    r_list->map->flags & _DRM_CONTAINS_LOCK) {

                        dev_priv->sarea = r_list->map;

                        break;

                }

        }

        if (!dev_priv->sarea) {

                DRM_ERROR("could not find sarea!\n");

                dev->dev_private = (void *)dev_priv;

                via_do_cleanup_map(dev);

                return -EINVAL;

        }

        DRM_FIND_MAP(dev_priv->fb, init->fb_offset);

        if (!dev_priv->fb) {

                DRM_ERROR("could not find framebuffer!\n");

                dev->dev_private = (void *)dev_priv;

                via_do_cleanup_map(dev);

                return -EINVAL;

        }

        DRM_FIND_MAP(dev_priv->mmio, init->mmio_offset);

        if (!dev_priv->mmio) {

                DRM_ERROR("could not find mmio region!\n");

                dev->dev_private = (void *)dev_priv;

                via_do_cleanup_map(dev);

                return -EINVAL;

        }

        dev_priv->sarea_priv =  (drm_via_sarea_t *)((u8 *)dev_priv->sarea->handle +

                                     init->sarea_priv_offset);

        dev_priv->agpAddr = init->agpAddr;

        dev->dev_private = (void *)dev_priv;

        return 0;

}

int via_do_cleanup_map(drm_device_t *dev)

{

        if (dev->dev_private) {

                drm_via_private_t *dev_priv = dev->dev_private;

                DRM(free)(dev_priv, sizeof(drm_via_private_t),

                           DRM_MEM_DRIVER);

                dev->dev_private = NULL;

        }

        return 0;

}

int via_map_init(struct inode *inode, struct file *filp,

                   unsigned int cmd, unsigned long arg)

{

        drm_file_t *priv = filp->private_data;

        drm_device_t *dev = priv->dev;

        drm_via_init_t init;

        DRM_DEBUG("%s\n", __FUNCTION__);

        if (copy_from_user(&init, (drm_via_init_t *)arg, sizeof(init)))

                return -EFAULT;

        switch (init.func) {

            case VIA_INIT_MAP:

                return via_do_init_map(dev, &init);

            case VIA_CLEANUP_MAP:

                return via_do_cleanup_map(dev);

        }

        return -EINVAL;

}