drivers/gpu/drm/nouveau/nvkm/engine/disp/oimmnv50.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 #include "channv50.h"
  25 #include "rootnv50.h"
  26
  27 #include <core/client.h>
  28
  29 #include <nvif/class.h>
  30 #include <nvif/unpack.h>
  31
  32 int
  33 nv50_disp_oimm_new(const struct nv50_disp_chan_func *func,
  34                    const struct nv50_disp_chan_mthd *mthd,
  35                    struct nv50_disp_root *root, int chid,
  36                    const struct nvkm_oclass *oclass, void *data, u32 size,
  37                    struct nvkm_object **pobject)
  38 {
  39         union {
  40                 struct nv50_disp_overlay_v0 v0;
  41         } *args = data;
  42         struct nvkm_object *parent = oclass->parent;
  43         struct nv50_disp *disp = root->disp;
  44         int head, ret;
  45
  46         nvif_ioctl(parent, "create disp overlay size %d\n", size);
  47         if (nvif_unpack(args->v0, 0, 0, false)) {
  48                 nvif_ioctl(parent, "create disp overlay vers %d head %d\n",
  49                            args->v0.version, args->v0.head);
  50                 if (args->v0.head > disp->base.head.nr)
  51                         return -EINVAL;
  52                 head = args->v0.head;
  53         } else
  54                 return ret;
  55
  56         return nv50_disp_chan_new_(func, mthd, root, chid + head,
  57                                    head, oclass, pobject);
  58 }
  59
  60 const struct nv50_disp_pioc_oclass
  61 nv50_disp_oimm_oclass = {
  62         .base.oclass = NV50_DISP_OVERLAY,
  63         .base.minver = 0,
  64         .base.maxver = 0,
  65         .ctor = nv50_disp_oimm_new,
  66         .func = &nv50_disp_pioc_func,
  67         .chid = 5,
  68 };