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#include <nvif/device.h>
25#include <nvif/client.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
41int
42nvif_device_map(struct nvif_device *device)
43{
44	return nvif_object_map(&device->object, NULL, 0);
45}
46
47void
48nvif_device_dtor(struct nvif_device *device)
49{
50	nvif_user_dtor(device);
51	kfree(device->runlist);
52	device->runlist = NULL;
53	nvif_object_dtor(&device->object);
54}
55
56int
57nvif_device_ctor(struct nvif_client *client, const char *name, struct nvif_device *device)
58{
59	int ret = nvif_object_ctor(&client->object, name ? name : "nvifDevice", 0,
60				   0x0080, NULL, 0, &device->object);
61	device->runlist = NULL;
62	device->user.func = NULL;
63	if (ret == 0) {
64		device->info.version = 0;
65		ret = nvif_object_mthd(&device->object, NV_DEVICE_V0_INFO,
66				       &device->info, sizeof(device->info));
67	}
68	return ret;
69}