LXR linux/drivers/char/drm/via

   1/*
   2 * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
   3 * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
   4 *
   5 * Permission is hereby granted, free of charge, to any person obtaining a
   6 * copy of this software and associated documentation files (the "Software"),
   7 * to deal in the Software without restriction, including without limitation
   8 * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9 * and/or sell copies of the Software, and to permit persons to whom the
  10 * Software is furnished to do so, subject to the following conditions:
  11 *
  12 * The above copyright notice and this permission notice (including the
  13 * next paragraph) shall be included in all copies or substantial portions
  14 * of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19 * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22 * DEALINGS IN THE SOFTWARE.
  23 */
  24#include "drmP.h"
  25#include "via_drm.h"
  26#include "via_drv.h"
  27
  28static int via_do_init_map(struct drm_device * dev, drm_via_init_t * init)
  29{
  30        drm_via_private_t *dev_priv = dev->dev_private;
  31
  32        DRM_DEBUG("%s\n", __FUNCTION__);
  33
  34        dev_priv->sarea = drm_getsarea(dev);
  35        if (!dev_priv->sarea) {
  36                DRM_ERROR("could not find sarea!\n");
  37                dev->dev_private = (void *)dev_priv;
  38                via_do_cleanup_map(dev);
  39                return -EINVAL;
  40        }
  41
  42        dev_priv->fb = drm_core_findmap(dev, init->fb_offset);
  43        if (!dev_priv->fb) {
  44                DRM_ERROR("could not find framebuffer!\n");
  45                dev->dev_private = (void *)dev_priv;
  46                via_do_cleanup_map(dev);
  47                return -EINVAL;
  48        }
  49        dev_priv->mmio = drm_core_findmap(dev, init->mmio_offset);
  50        if (!dev_priv->mmio) {
  51                DRM_ERROR("could not find mmio region!\n");
  52                dev->dev_private = (void *)dev_priv;
  53                via_do_cleanup_map(dev);
  54                return -EINVAL;
  55        }
  56
  57        dev_priv->sarea_priv =
  58            (drm_via_sarea_t *) ((u8 *) dev_priv->sarea->handle +
  59                                 init->sarea_priv_offset);
  60
  61        dev_priv->agpAddr = init->agpAddr;
  62
  63        via_init_futex(dev_priv);
  64
  65        via_init_dmablit(dev);
  66
  67        dev->dev_private = (void *)dev_priv;
  68        return 0;
  69}
  70
  71int via_do_cleanup_map(struct drm_device * dev)
  72{
  73        via_dma_cleanup(dev);
  74
  75        return 0;
  76}
  77
  78int via_map_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
  79{
  80        drm_via_init_t *init = data;
  81
  82        DRM_DEBUG("%s\n", __FUNCTION__);
  83
  84        switch (init->func) {
  85        case VIA_INIT_MAP:
  86                return via_do_init_map(dev, init);
  87        case VIA_CLEANUP_MAP:
  88                return via_do_cleanup_map(dev);
  89        }
  90
  91        return -EINVAL;
  92}
  93
  94int via_driver_load(struct drm_device *dev, unsigned long chipset)
  95{
  96        drm_via_private_t *dev_priv;
  97        int ret = 0;
  98
  99        dev_priv = drm_calloc(1, sizeof(drm_via_private_t), DRM_MEM_DRIVER);
 100        if (dev_priv == NULL)
 101                return -ENOMEM;
 102
 103        dev->dev_private = (void *)dev_priv;
 104
 105        dev_priv->chipset = chipset;
 106
 107        ret = drm_sman_init(&dev_priv->sman, 2, 12, 8);
 108        if (ret) {
 109                drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER);
 110        }
 111        return ret;
 112}
 113
 114int via_driver_unload(struct drm_device *dev)
 115{
 116        drm_via_private_t *dev_priv = dev->dev_private;
 117
 118        drm_sman_takedown(&dev_priv->sman);
 119
 120        drm_free(dev_priv, sizeof(drm_via_private_t), DRM_MEM_DRIVER);
 121
 122        return 0;
 123}
 124
 125