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#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
  34int
  35nv50_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
  62const struct nv50_disp_pioc_oclass
  63nv50_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};
  71