LXR linux/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
  27u64
  28nvif_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
  41void
  42nvif_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
  50int
  51nvif_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}
  65