/*
 * 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;
	unsigned int i;
	
	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));
	
	DRM_GETSAREA();
	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;

	
	for (i=0; i<VIA_NR_XVMC_LOCKS; ++i) 
                DRM_INIT_WAITQUEUE( &(dev_priv->decoder_queue[i]) );

	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( DRM_IOCTL_ARGS )
{
        DRM_DEVICE;
	drm_via_init_t init;

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

	DRM_COPY_FROM_USER_IOCTL(init, (drm_via_init_t *)data, sizeof(init));

	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;
}

int via_decoder_futex( DRM_IOCTL_ARGS ) 
{
        DRM_DEVICE;
        drm_via_futex_t fx;
        volatile int *lock;
        drm_via_private_t *dev_priv = (drm_via_private_t*) dev->dev_private;
        drm_via_sarea_t *sAPriv = dev_priv->sarea_priv;
        int ret = 0;

        DRM_COPY_FROM_USER_IOCTL(fx, (drm_via_futex_t *) data, sizeof(fx));
    
        if (fx.lock > VIA_NR_XVMC_LOCKS)
                return -EFAULT;

        lock = XVMCLOCKPTR(sAPriv,fx.lock);

        switch(fx.op) {
        case VIA_FUTEX_WAIT:
                DRM_WAIT_ON(ret, dev_priv->decoder_queue[fx.lock], 
                            (fx.ms / 10)*(DRM_HZ/100), 
                            *lock != fx.val);
                return ret;
        case VIA_FUTEX_WAKE:
                DRM_WAKEUP( &(dev_priv->decoder_queue[fx.lock]) );
                return 0;
        }
        return 0;
}