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         if (!device->user.func) {
  31                 struct nv_device_time_v0 args = {};
  32                 int ret = nvif_object_mthd(&device->object, NV_DEVICE_V0_TIME,
  33                                            &args, sizeof(args));
  34                 WARN_ON_ONCE(ret != 0);
  35                 return args.time;
  36         }
  37
  38         return device->user.func->time(&device->user);
  39 }
  40
  41 void
  42 nvif_device_dtor(struct nvif_device *device)
  43 {
  44         nvif_user_dtor(device);
  45         kfree(device->runlist);
  46         device->runlist = NULL;
  47         nvif_object_dtor(&device->object);
  48 }
  49
  50 int
  51 nvif_device_ctor(struct nvif_object *parent, const char *name, u32 handle,
  52                  s32 oclass, void *data, u32 size, struct nvif_device *device)
  53 {
  54         int ret = nvif_object_ctor(parent, name ? name : "nvifDevice", handle,
  55                                    oclass, data, size, &device->object);
  56         device->runlist = NULL;
  57         device->user.func = NULL;
  58         if (ret == 0) {
  59                 device->info.version = 0;
  60                 ret = nvif_object_mthd(&device->object, NV_DEVICE_V0_INFO,
  61                                        &device->info, sizeof(device->info));
  62         }
  63         return ret;
  64 }