text: /*
   * 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.
   */
  #include "drmP.h"
  #include "via_drm.h"
  #include "via_drv.h"
  
  static int via_do_init_map(struct drm_device *dev, drm_via_init_t *init)
  {
  	drm_via_private_t *dev_priv = dev->dev_private;
  
  	DRM_DEBUG("\n");
  
  	dev_priv->sarea = drm_getsarea(dev);
  	if (!dev_priv->sarea) {
  		DRM_ERROR("could not find sarea!\n");
  		dev->dev_private = (void *)dev_priv;
  		via_do_cleanup_map(dev);
  		return -EINVAL;
  	}
  
  	dev_priv->fb = drm_core_findmap(dev, 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;
  	}
  	dev_priv->mmio = drm_core_findmap(dev, 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;
  
  	via_init_futex(dev_priv);
  
  	via_init_dmablit(dev);
  
  	dev->dev_private = (void *)dev_priv;
  	return 0;
  }
  
  int via_do_cleanup_map(struct drm_device *dev)
  {
  	via_dma_cleanup(dev);
  
  	return 0;
  }
  
  int via_map_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
  {
  	drm_via_init_t *init = data;
  
  	DRM_DEBUG("\n");
  
  	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_driver_load(struct drm_device *dev, unsigned long chipset)
  {
  	drm_via_private_t *dev_priv;
  	int ret = 0;
  
  	dev_priv = kzalloc(sizeof(drm_via_private_t), GFP_KERNEL);
  	if (dev_priv == NULL)
  		return -ENOMEM;
  
  	dev->dev_private = (void *)dev_priv;
  
  	dev_priv->chipset = chipset;
  
  	ret = drm_sman_init(&dev_priv->sman, 2, 12, 8);
  	if (ret) {
  		kfree(dev_priv);
  		return ret;
  	}
  
  	ret = drm_vblank_init(dev, 1);
  	if (ret) {
  		drm_sman_takedown(&dev_priv->sman);
  		kfree(dev_priv);
  		return ret;
  	}
  
  	return 0;
  }
  
  int via_driver_unload(struct drm_device *dev)
  {
  	drm_via_private_t *dev_priv = dev->dev_private;
  
  	drm_sman_takedown(&dev_priv->sman);
  
  	kfree(dev_priv);
  
  	return 0;
  }
  