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/*
 * Copyright 2006 Tungsten Graphics Inc., Bismarck, ND., USA.
 * 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
 * THE AUTHORS OR COPYRIGHT HOLDERS AND/OR THEIR 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.
 */
/*
 * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
 */

#include "drmP.h"
#include "via_drm.h"
#include "via_drv.h"
#include "drm_sman.h"

#define VIA_MM_ALIGN_SHIFT 4
#define VIA_MM_ALIGN_MASK ( (1 << VIA_MM_ALIGN_SHIFT) - 1)

int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
	drm_via_agp_t *agp = data;
	drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
	int ret;

	mutex_lock(&dev->struct_mutex);
	ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_AGP, 0,
				 agp->size >> VIA_MM_ALIGN_SHIFT);

	if (ret) {
		DRM_ERROR("AGP memory manager initialisation error\n");
		mutex_unlock(&dev->struct_mutex);
		return ret;
	}

	dev_priv->agp_initialized = 1;
	dev_priv->agp_offset = agp->offset;
	mutex_unlock(&dev->struct_mutex);