src/gallium/winsys/drm/nouveau/nouveau_grobj.c

   1 /*
   2  * Copyright 2007 Nouveau Project
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include <stdlib.h>
  24 #include <errno.h>
  25
  26 #include "nouveau_drmif.h"
  27
  28 int
  29 nouveau_grobj_alloc(struct nouveau_channel *chan, uint32_t handle,
  30                     int class, struct nouveau_grobj **grobj)
  31 {
  32         struct nouveau_device_priv *nvdev = nouveau_device(chan->device);
  33         struct nouveau_grobj_priv *nvgrobj;
  34         struct drm_nouveau_grobj_alloc g;
  35         int ret;
  36
  37         if (!nvdev || !grobj || *grobj)
  38                 return -EINVAL;
  39
  40         nvgrobj = calloc(1, sizeof(*nvgrobj));
  41         if (!nvgrobj)
  42                 return -ENOMEM;
  43         nvgrobj->base.channel = chan;
  44         nvgrobj->base.handle  = handle;
  45         nvgrobj->base.grclass = class;
  46
  47         g.channel = chan->id;
  48         g.handle  = handle;
  49         g.class   = class;
  50         ret = drmCommandWrite(nvdev->fd, DRM_NOUVEAU_GROBJ_ALLOC,
  51                               &g, sizeof(g));
  52         if (ret) {
  53                 nouveau_grobj_free((void *)&nvgrobj);
  54                 return ret;
  55         }
  56
  57         *grobj = &nvgrobj->base;
  58         return 0;
  59 }
  60
  61 int
  62 nouveau_grobj_ref(struct nouveau_channel *chan, uint32_t handle,
  63                   struct nouveau_grobj **grobj)
  64 {
  65         struct nouveau_grobj_priv *nvgrobj;
  66
  67         if (!chan || !grobj || *grobj)
  68                 return -EINVAL;
  69
  70         nvgrobj = calloc(1, sizeof(struct nouveau_grobj_priv));
  71         if (!nvgrobj)
  72                 return -ENOMEM;
  73         nvgrobj->base.channel = chan;
  74         nvgrobj->base.handle = handle;
  75         nvgrobj->base.grclass = 0;
  76
  77         *grobj = &nvgrobj->base;
  78         return 0;
  79 }
  80
  81 void
  82 nouveau_grobj_free(struct nouveau_grobj **grobj)
  83 {
  84         struct nouveau_device_priv *nvdev;
  85         struct nouveau_channel_priv *chan;
  86         struct nouveau_grobj_priv *nvgrobj;
  87
  88         if (!grobj || !*grobj)
  89                 return;
  90         nvgrobj = nouveau_grobj(*grobj);
  91         *grobj = NULL;
  92
  93
  94         chan = nouveau_channel(nvgrobj->base.channel);
  95         nvdev = nouveau_device(chan->base.device);
  96
  97         if (nvgrobj->base.grclass) {
  98                 struct drm_nouveau_gpuobj_free f;
  99
 100                 f.channel = chan->drm.channel;
 101                 f.handle  = nvgrobj->base.handle;
 102                 drmCommandWrite(nvdev->fd, DRM_NOUVEAU_GPUOBJ_FREE,
 103                                 &f, sizeof(f));
 104         }
 105         free(nvgrobj);
 106 }
 107