root/drivers/gpu/drm/via/via_map.c

DEFINITIONS

1. via_do_init_map
2. via_do_cleanup_map
3. via_map_init
4. via_driver_load
5. via_driver_unload

   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 
  25 #include <drm/drm_device.h>
  26 #include <drm/drm_pci.h>
  27 #include <drm/drm_vblank.h>
  28 #include <drm/via_drm.h>
  29 
  30 #include "via_drv.h"
  31 
  32 static int via_do_init_map(struct drm_device *dev, drm_via_init_t *init)
  33 {
  34         drm_via_private_t *dev_priv = dev->dev_private;
  35 
  36         DRM_DEBUG("\n");
  37 
  38         dev_priv->sarea = drm_legacy_getsarea(dev);
  39         if (!dev_priv->sarea) {
  40                 DRM_ERROR("could not find sarea!\n");
  41                 dev->dev_private = (void *)dev_priv;
  42                 via_do_cleanup_map(dev);
  43                 return -EINVAL;
  44         }
  45 
  46         dev_priv->fb = drm_legacy_findmap(dev, init->fb_offset);
  47         if (!dev_priv->fb) {
  48                 DRM_ERROR("could not find framebuffer!\n");
  49                 dev->dev_private = (void *)dev_priv;
  50                 via_do_cleanup_map(dev);
  51                 return -EINVAL;
  52         }
  53         dev_priv->mmio = drm_legacy_findmap(dev, init->mmio_offset);
  54         if (!dev_priv->mmio) {
  55                 DRM_ERROR("could not find mmio region!\n");
  56                 dev->dev_private = (void *)dev_priv;
  57                 via_do_cleanup_map(dev);
  58                 return -EINVAL;
  59         }
  60 
  61         dev_priv->sarea_priv =
  62             (drm_via_sarea_t *) ((u8 *) dev_priv->sarea->handle +
  63                                  init->sarea_priv_offset);
  64 
  65         dev_priv->agpAddr = init->agpAddr;
  66 
  67         via_init_futex(dev_priv);
  68 
  69         via_init_dmablit(dev);
  70 
  71         dev->dev_private = (void *)dev_priv;
  72         return 0;
  73 }
  74 
  75 int via_do_cleanup_map(struct drm_device *dev)
  76 {
  77         via_dma_cleanup(dev);
  78 
  79         return 0;
  80 }
  81 
  82 int via_map_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
  83 {
  84         drm_via_init_t *init = data;
  85 
  86         DRM_DEBUG("\n");
  87 
  88         switch (init->func) {
  89         case VIA_INIT_MAP:
  90                 return via_do_init_map(dev, init);
  91         case VIA_CLEANUP_MAP:
  92                 return via_do_cleanup_map(dev);
  93         }
  94 
  95         return -EINVAL;
  96 }
  97 
  98 int via_driver_load(struct drm_device *dev, unsigned long chipset)
  99 {
 100         drm_via_private_t *dev_priv;
 101         int ret = 0;
 102 
 103         dev_priv = kzalloc(sizeof(drm_via_private_t), GFP_KERNEL);
 104         if (dev_priv == NULL)
 105                 return -ENOMEM;
 106 
 107         idr_init(&dev_priv->object_idr);
 108         dev->dev_private = (void *)dev_priv;
 109 
 110         dev_priv->chipset = chipset;
 111 
 112         pci_set_master(dev->pdev);
 113 
 114         ret = drm_vblank_init(dev, 1);
 115         if (ret) {
 116                 kfree(dev_priv);
 117                 return ret;
 118         }
 119 
 120         return 0;
 121 }
 122 
 123 void via_driver_unload(struct drm_device *dev)
 124 {
 125         drm_via_private_t *dev_priv = dev->dev_private;
 126 
 127         idr_destroy(&dev_priv->object_idr);
 128 
 129         kfree(dev_priv);
 130 }