LXR linux/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
  27#include <core/client.h>
  28
  29#include <nvif/cl507a.h>
  30#include <nvif/unpack.h>
  31
  32int
  33nv50_disp_curs_new_(const struct nv50_disp_chan_func *func,
  34                    struct nv50_disp *disp, int ctrl, int user,
  35                    const struct nvkm_oclass *oclass, void *argv, u32 argc,
  36                    struct nvkm_object **pobject)
  37{
  38        union {
  39                struct nv50_disp_cursor_v0 v0;
  40        } *args = argv;
  41        struct nvkm_object *parent = oclass->parent;
  42        int head, ret = -ENOSYS;
  43
  44        nvif_ioctl(parent, "create disp cursor size %d\n", argc);
  45        if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
  46                nvif_ioctl(parent, "create disp cursor vers %d head %d\n",
  47                           args->v0.version, args->v0.head);
  48                if (!nvkm_head_find(&disp->base, args->v0.head))
  49                        return -EINVAL;
  50                head = args->v0.head;
  51        } else
  52                return ret;
  53
  54        return nv50_disp_chan_new_(func, NULL, disp, ctrl + head, user + head,
  55                                   head, oclass, pobject);
  56}
  57
  58int
  59nv50_disp_curs_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
  60                   struct nv50_disp *disp, struct nvkm_object **pobject)
  61{
  62        return nv50_disp_curs_new_(&nv50_disp_pioc_func, disp, 7, 7,
  63                                   oclass, argv, argc, pobject);
  64}
  65