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
32 int
nvif_client_ioctl(struct nvif_client * client,void * data,u32 size)33 nvif_client_ioctl(struct nvif_client *client, void *data, u32 size)
34 {
35 return client->driver->ioctl(client->object.priv, client->super, data, size, NULL);
36 }
37
38 int
nvif_client_suspend(struct nvif_client * client)39 nvif_client_suspend(struct nvif_client *client)
40 {
41 return client->driver->suspend(client->object.priv);
42 }
43
44 int
nvif_client_resume(struct nvif_client * client)45 nvif_client_resume(struct nvif_client *client)
46 {
47 return client->driver->resume(client->object.priv);
48 }
49
50 void
nvif_client_fini(struct nvif_client * client)51 nvif_client_fini(struct nvif_client *client)
52 {
53 nvif_object_fini(&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
61 int
nvif_client_init(struct nvif_client * parent,const char * name,u64 device,struct nvif_client * client)62 nvif_client_init(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_init(parent != client ? &parent->object : NULL,
74 0, NVIF_CLASS_CLIENT, &args, sizeof(args),
75 &client->object);
76 if (ret)
77 return ret;
78
79 client->object.client = client;
80 client->object.handle = ~0;
81 client->route = NVIF_IOCTL_V0_ROUTE_NVIF;
82 client->super = true;
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_fini(client);
92 return ret;
93 }
94
