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
29int
30nvif_client_ioctl(struct nvif_client *client, void *data, u32 size)
31{
32	return client->driver->ioctl(client->base.priv, client->super, data, size, NULL);
33}
34
35int
36nvif_client_suspend(struct nvif_client *client)
37{
38	return client->driver->suspend(client->base.priv);
39}
40
41int
42nvif_client_resume(struct nvif_client *client)
43{
44	return client->driver->resume(client->base.priv);
45}
46
47void
48nvif_client_fini(struct nvif_client *client)
49{
50	if (client->driver) {
51		client->driver->fini(client->base.priv);
52		client->driver = NULL;
53		client->base.parent = NULL;
54		nvif_object_fini(&client->base);
55	}
56}
57
58const struct nvif_driver *
59nvif_drivers[] = {
60#ifdef __KERNEL__
61	&nvif_driver_nvkm,
62#else
63	&nvif_driver_drm,
64	&nvif_driver_lib,
65	&nvif_driver_null,
66#endif
67	NULL
68};
69
70int
71nvif_client_init(void (*dtor)(struct nvif_client *), const char *driver,
72		 const char *name, u64 device, const char *cfg, const char *dbg,
73		 struct nvif_client *client)
74{
75	int ret, i;
76
77	ret = nvif_object_init(NULL, (void*)dtor, 0, 0, NULL, 0, &client->base);
78	if (ret)
79		return ret;
80
81	client->base.parent = &client->base;
82	client->base.handle = ~0;
83	client->object = &client->base;
84	client->super = true;
85
86	for (i = 0, ret = -EINVAL; (client->driver = nvif_drivers[i]); i++) {
87		if (!driver || !strcmp(client->driver->name, driver)) {
88			ret = client->driver->init(name, device, cfg, dbg,
89						  &client->base.priv);
90			if (!ret || driver)
91				break;
92		}
93	}
94
95	if (ret)
96		nvif_client_fini(client);
97	return ret;
98}
99
100static void
101nvif_client_del(struct nvif_client *client)
102{
103	nvif_client_fini(client);
104	kfree(client);
105}
106
107int
108nvif_client_new(const char *driver, const char *name, u64 device,
109		const char *cfg, const char *dbg,
110		struct nvif_client **pclient)
111{
112	struct nvif_client *client = kzalloc(sizeof(*client), GFP_KERNEL);
113	if (client) {
114		int ret = nvif_client_init(nvif_client_del, driver, name,
115					   device, cfg, dbg, client);
116		if (ret) {
117			kfree(client);
118			client = NULL;
119		}
120		*pclient = client;
121		return ret;
122	}
123	return -ENOMEM;
124}
125
126void
127nvif_client_ref(struct nvif_client *client, struct nvif_client **pclient)
128{
129	nvif_object_ref(&client->base, (struct nvif_object **)pclient);
130}
131