Logo Search packages:      
Sourcecode: linux version File versions  Download package

via_map.c

/*
 * 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("%s\n", __FUNCTION__);

      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("%s\n", __FUNCTION__);

      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 = drm_calloc(1, sizeof(drm_via_private_t), DRM_MEM_DRIVER);
      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) {
            drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER);
      }
      return ret;
}

int via_driver_unload(struct drm_device *dev)
{
      drm_via_private_t *dev_priv = dev->dev_private;

      drm_sman_takedown(&dev_priv->sman);

      drm_free(dev_priv, sizeof(drm_via_private_t), DRM_MEM_DRIVER);

      return 0;
}


Generated by  Doxygen 1.6.0   Back to index