drivers/gpu/drm/nouveau/nvc0_software.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24
  25 #include "drmP.h"
  26
  27 #include "nouveau_drv.h"
  28 #include <core/ramht.h>
  29 #include "nouveau_software.h"
  30
  31 #include "nv50_display.h"
  32
  33 struct nvc0_software_priv {
  34         struct nouveau_software_priv base;
  35 };
  36
  37 struct nvc0_software_chan {
  38         struct nouveau_software_chan base;
  39 };
  40
  41 static int
  42 nvc0_software_context_new(struct nouveau_channel *chan, int engine)
  43 {
  44         struct nvc0_software_chan *pch;
  45
  46         pch = kzalloc(sizeof(*pch), GFP_KERNEL);
  47         if (!pch)
  48                 return -ENOMEM;
  49
  50         nouveau_software_context_new(chan, &pch->base);
  51         chan->engctx[engine] = pch;
  52         return 0;
  53 }
  54
  55 static void
  56 nvc0_software_context_del(struct nouveau_channel *chan, int engine)
  57 {
  58         struct nvc0_software_chan *pch = chan->engctx[engine];
  59         chan->engctx[engine] = NULL;
  60         kfree(pch);
  61 }
  62
  63 static int
  64 nvc0_software_object_new(struct nouveau_channel *chan, int engine,
  65                          u32 handle, u16 class)
  66 {
  67         return 0;
  68 }
  69
  70 static int
  71 nvc0_software_init(struct drm_device *dev, int engine)
  72 {
  73         return 0;
  74 }
  75
  76 static int
  77 nvc0_software_fini(struct drm_device *dev, int engine, bool suspend)
  78 {
  79         return 0;
  80 }
  81
  82 static void
  83 nvc0_software_destroy(struct drm_device *dev, int engine)
  84 {
  85         struct nvc0_software_priv *psw = nv_engine(dev, engine);
  86
  87         NVOBJ_ENGINE_DEL(dev, SW);
  88         kfree(psw);
  89 }
  90
  91 int
  92 nvc0_software_create(struct drm_device *dev)
  93 {
  94         struct nvc0_software_priv *psw = kzalloc(sizeof(*psw), GFP_KERNEL);
  95         if (!psw)
  96                 return -ENOMEM;
  97
  98         psw->base.base.destroy = nvc0_software_destroy;
  99         psw->base.base.init = nvc0_software_init;
 100         psw->base.base.fini = nvc0_software_fini;
 101         psw->base.base.context_new = nvc0_software_context_new;
 102         psw->base.base.context_del = nvc0_software_context_del;
 103         psw->base.base.object_new = nvc0_software_object_new;
 104         nouveau_software_create(&psw->base);
 105
 106         NVOBJ_ENGINE_ADD(dev, SW, &psw->base.base);
 107         NVOBJ_CLASS(dev, 0x906e, SW);
 108         return 0;
 109 }