sys/external/bsd/drm/dist/libdrm/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_private.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         nvgrobj->base.bound   = NOUVEAU_GROBJ_UNBOUND;
  47         nvgrobj->base.subc    = -1;
  48
  49         g.channel = chan->id;
  50         g.handle  = handle;
  51         g.class   = class;
  52         ret = drmCommandWrite(nvdev->fd, DRM_NOUVEAU_GROBJ_ALLOC,
  53                               &g, sizeof(g));
  54         if (ret) {
  55                 nouveau_grobj_free((void *)&nvgrobj);
  56                 return ret;
  57         }
  58
  59         *grobj = &nvgrobj->base;
  60         return 0;
  61 }
  62
  63 int
  64 nouveau_grobj_ref(struct nouveau_channel *chan, uint32_t handle,
  65                   struct nouveau_grobj **grobj)
  66 {
  67         struct nouveau_grobj_priv *nvgrobj;
  68
  69         if (!chan || !grobj || *grobj)
  70                 return -EINVAL;
  71
  72         nvgrobj = calloc(1, sizeof(struct nouveau_grobj_priv));
  73         if (!nvgrobj)
  74                 return -ENOMEM;
  75         nvgrobj->base.channel = chan;
  76         nvgrobj->base.handle = handle;
  77         nvgrobj->base.grclass = 0;
  78
  79         *grobj = &nvgrobj->base;
  80         return 0;
  81 }
  82
  83 void
  84 nouveau_grobj_free(struct nouveau_grobj **grobj)
  85 {
  86         struct nouveau_device_priv *nvdev;
  87         struct nouveau_channel_priv *chan;
  88         struct nouveau_grobj_priv *nvgrobj;
  89
  90         if (!grobj || !*grobj)
  91                 return;
  92         nvgrobj = nouveau_grobj(*grobj);
  93         *grobj = NULL;
  94
  95
  96         chan = nouveau_channel(nvgrobj->base.channel);
  97         nvdev = nouveau_device(chan->base.device);
  98
  99         if (nvgrobj->base.grclass) {
 100                 struct drm_nouveau_gpuobj_free f;
 101
 102                 f.channel = chan->drm.channel;
 103                 f.handle  = nvgrobj->base.handle;
 104                 drmCommandWrite(nvdev->fd, DRM_NOUVEAU_GPUOBJ_FREE,
 105                                 &f, sizeof(f));
 106         }
 107         free(nvgrobj);
 108 }
 109
 110 void
 111 nouveau_grobj_autobind(struct nouveau_grobj *grobj)
 112 {
 113         struct nouveau_subchannel *subc = NULL;
 114         int i;
 115
 116         for (i = 0; i < 8; i++) {
 117                 struct nouveau_subchannel *scc = &grobj->channel->subc[i];
 118
 119                 if (scc->gr && scc->gr->bound == NOUVEAU_GROBJ_BOUND_EXPLICIT)
 120                         continue;
 121
 122                 if (!subc || scc->sequence < subc->sequence)
 123                         subc = scc;
 124         }
 125
 126         if (subc->gr) {
 127                 subc->gr->bound = NOUVEAU_GROBJ_UNBOUND;
 128                 subc->gr->subc  = -1;
 129         }
 130
 131         subc->gr = grobj;
 132         subc->gr->bound = NOUVEAU_GROBJ_BOUND;
 133         subc->gr->subc  = subc - &grobj->channel->subc[0];
 134
 135         BEGIN_RING(grobj->channel, grobj, 0x0000, 1);
 136         OUT_RING  (grobj->channel, grobj->handle);
 137 }
 138