drivers/gpu/drm/nouveau/nvkm/engine/disp/cursnv50.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 "head.h"
  26 #include "rootnv50.h"
  27
  28 #include <core/client.h>
  29
  30 #include <nvif/class.h>
  31 #include <nvif/cl507a.h>
  32 #include <nvif/unpack.h>
  33
  34 int
  35 nv50_disp_curs_new(const struct nv50_disp_chan_func *func,
  36                    const struct nv50_disp_chan_mthd *mthd,
  37                    struct nv50_disp_root *root, int ctrl, int user,
  38                    const struct nvkm_oclass *oclass, void *data, u32 size,
  39                    struct nvkm_object **pobject)
  40 {
  41         union {
  42                 struct nv50_disp_cursor_v0 v0;
  43         } *args = data;
  44         struct nvkm_object *parent = oclass->parent;
  45         struct nv50_disp *disp = root->disp;
  46         int head, ret = -ENOSYS;
  47
  48         nvif_ioctl(parent, "create disp cursor size %d\n", size);
  49         if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
  50                 nvif_ioctl(parent, "create disp cursor vers %d head %d\n",
  51                            args->v0.version, args->v0.head);
  52                 if (!nvkm_head_find(&disp->base, args->v0.head))
  53                         return -EINVAL;
  54                 head = args->v0.head;
  55         } else
  56                 return ret;
  57
  58         return nv50_disp_chan_new_(func, mthd, root, ctrl + head, user + head,
  59                                    head, oclass, pobject);
  60 }
  61
  62 const struct nv50_disp_pioc_oclass
  63 nv50_disp_curs_oclass = {
  64         .base.oclass = NV50_DISP_CURSOR,
  65         .base.minver = 0,
  66         .base.maxver = 0,
  67         .ctor = nv50_disp_curs_new,
  68         .func = &nv50_disp_pioc_func,
  69         .chid = { 7, 7 },
  70 };