LXR linux/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
  32int
  33nv50_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
  60const struct nv50_disp_pioc_oclass
  61nv50_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};
  69