drivers/gpu/drm/nouveau/nvif/device.c

   1 /*
   2  * Copyright 2014 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 <bskeggs@redhat.com>
  23  */
  24
  25 #include <nvif/device.h>
  26
  27 u64
  28 nvif_device_time(struct nvif_device *device)
  29 {
  30         struct nv_device_time_v0 args = {};
  31         int ret = nvif_object_mthd(&device->object, NV_DEVICE_V0_TIME,
  32                                    &args, sizeof(args));
  33         WARN_ON_ONCE(ret != 0);
  34         return args.time;
  35 }
  36
  37 void
  38 nvif_device_fini(struct nvif_device *device)
  39 {
  40         nvif_object_fini(&device->object);
  41 }
  42
  43 int
  44 nvif_device_init(struct nvif_object *parent, u32 handle, s32 oclass,
  45                  void *data, u32 size, struct nvif_device *device)
  46 {
  47         int ret = nvif_object_init(parent, handle, oclass, data, size,
  48                                    &device->object);
  49         if (ret == 0) {
  50                 device->info.version = 0;
  51                 ret = nvif_object_mthd(&device->object, NV_DEVICE_V0_INFO,
  52                                        &device->info, sizeof(device->info));
  53         }
  54         return ret;
  55 }