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

client.c (2696B)

      1/*
      2 * Copyright 2013 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/client.h>
     26#include <nvif/driver.h>
     27#include <nvif/ioctl.h>
     28
     29#include <nvif/class.h>
     30#include <nvif/if0000.h>
     31
     32int
     33nvif_client_ioctl(struct nvif_client *client, void *data, u32 size)
     34{
     35	return client->driver->ioctl(client->object.priv, data, size, NULL);
     36}
     37
     38int
     39nvif_client_suspend(struct nvif_client *client)
     40{
     41	return client->driver->suspend(client->object.priv);
     42}
     43
     44int
     45nvif_client_resume(struct nvif_client *client)
     46{
     47	return client->driver->resume(client->object.priv);
     48}
     49
     50void
     51nvif_client_dtor(struct nvif_client *client)
     52{
     53	nvif_object_dtor(&client->object);
     54	if (client->driver) {
     55		if (client->driver->fini)
     56			client->driver->fini(client->object.priv);
     57		client->driver = NULL;
     58	}
     59}
     60
     61int
     62nvif_client_ctor(struct nvif_client *parent, const char *name, u64 device,
     63		 struct nvif_client *client)
     64{
     65	struct nvif_client_v0 args = { .device = device };
     66	struct {
     67		struct nvif_ioctl_v0 ioctl;
     68		struct nvif_ioctl_nop_v0 nop;
     69	} nop = {};
     70	int ret;
     71
     72	strncpy(args.name, name, sizeof(args.name));
     73	ret = nvif_object_ctor(parent != client ? &parent->object : NULL,
     74			       name ? name : "nvifClient", 0,
     75			       NVIF_CLASS_CLIENT, &args, sizeof(args),
     76			       &client->object);
     77	if (ret)
     78		return ret;
     79
     80	client->object.client = client;
     81	client->object.handle = ~0;
     82	client->route = NVIF_IOCTL_V0_ROUTE_NVIF;
     83	client->driver = parent->driver;
     84
     85	if (ret == 0) {
     86		ret = nvif_client_ioctl(client, &nop, sizeof(nop));
     87		client->version = nop.nop.version;
     88	}
     89
     90	if (ret)
     91		nvif_client_dtor(client);
     92	return ret;
     93}