cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

device.c (2158B)

      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}