sys/external/bsd/drm/dist/shared-core/via_map.c

   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
  28 static 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         int ret = 0;
  32
  33         DRM_DEBUG("\n");
  34
  35         dev_priv->sarea = drm_getsarea(dev);
  36         if (!dev_priv->sarea) {
  37                 DRM_ERROR("could not find sarea!\n");
  38                 dev->dev_private = (void *)dev_priv;
  39                 via_do_cleanup_map(dev);
  40                 return -EINVAL;
  41         }
  42
  43         dev_priv->fb = drm_core_findmap(dev, init->fb_offset);
  44         if (!dev_priv->fb) {
  45                 DRM_ERROR("could not find framebuffer!\n");
  46                 dev->dev_private = (void *)dev_priv;
  47                 via_do_cleanup_map(dev);
  48                 return -EINVAL;
  49         }
  50         dev_priv->mmio = drm_core_findmap(dev, init->mmio_offset);
  51         if (!dev_priv->mmio) {
  52                 DRM_ERROR("could not find mmio region!\n");
  53                 dev->dev_private = (void *)dev_priv;
  54                 via_do_cleanup_map(dev);
  55                 return -EINVAL;
  56         }
  57
  58         dev_priv->sarea_priv =
  59             (drm_via_sarea_t *) ((u8 *) dev_priv->sarea->handle +
  60                                  init->sarea_priv_offset);
  61
  62         dev_priv->agpAddr = init->agpAddr;
  63
  64         via_init_futex( dev_priv );
  65 #ifdef VIA_HAVE_DMABLIT
  66         via_init_dmablit( dev );
  67 #endif
  68 #ifdef VIA_HAVE_FENCE
  69         dev_priv->emit_0_sequence = 0;
  70         dev_priv->have_idlelock = 0;
  71         spin_lock_init(&dev_priv->fence_lock);
  72 #endif /* VIA_HAVE_FENCE */
  73         dev->dev_private = (void *)dev_priv;
  74 #ifdef VIA_HAVE_BUFFER
  75         ret = drm_bo_driver_init(dev);
  76         if (ret)
  77                 DRM_ERROR("Could not initialize buffer object driver.\n");
  78 #endif
  79         return ret;
  80
  81 }
  82
  83 int via_do_cleanup_map(struct drm_device * dev)
  84 {
  85         via_dma_cleanup(dev);
  86
  87         return 0;
  88 }
  89
  90
  91 int via_map_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
  92 {
  93         drm_via_init_t *init = data;
  94
  95         DRM_DEBUG("\n");
  96
  97         switch (init->func) {
  98         case VIA_INIT_MAP:
  99                 return via_do_init_map(dev, init);
 100         case VIA_CLEANUP_MAP:
 101                 return via_do_cleanup_map(dev);
 102         }
 103
 104         return -EINVAL;
 105 }
 106
 107 int via_driver_load(struct drm_device *dev, unsigned long chipset)
 108 {
 109         drm_via_private_t *dev_priv;
 110         int ret = 0;
 111
 112         dev_priv = drm_calloc(1, sizeof(drm_via_private_t), DRM_MEM_DRIVER);
 113         if (dev_priv == NULL)
 114                 return -ENOMEM;
 115
 116         dev->dev_private = (void *)dev_priv;
 117
 118         dev_priv->chipset = chipset;
 119
 120 #ifdef VIA_HAVE_CORE_MM
 121         ret = drm_sman_init(&dev_priv->sman, 2, 12, 8);
 122         if (ret) {
 123                 drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER);
 124                 return ret;
 125         }
 126 #endif
 127
 128         ret = drm_vblank_init(dev, 1);
 129         if (ret) {
 130 #ifdef VIA_HAVE_CORE_MM
 131                 drm_sman_takedown(&dev_priv->sman);
 132 #endif
 133                 drm_free(dev_priv, sizeof(drm_via_private_t), DRM_MEM_DRIVER);
 134                 return ret;
 135         }
 136
 137         return 0;
 138
 139 }
 140
 141 int via_driver_unload(struct drm_device *dev)
 142 {
 143         drm_via_private_t *dev_priv = dev->dev_private;
 144
 145 #ifdef VIA_HAVE_CORE_MM
 146         drm_sman_takedown(&dev_priv->sman);
 147 #endif
 148         drm_free(dev_priv, sizeof(drm_via_private_t), DRM_MEM_DRIVER);
 149
 150         return 0;
 151 }