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 int
nvif_client_ioctl(struct nvif_client * client,void * data,u32 size)30 nvif_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
35 int
nvif_client_suspend(struct nvif_client * client)36 nvif_client_suspend(struct nvif_client *client)
37 {
38 return client->driver->suspend(client->base.priv);
39 }
40
41 int
nvif_client_resume(struct nvif_client * client)42 nvif_client_resume(struct nvif_client *client)
43 {
44 return client->driver->resume(client->base.priv);
45 }
46
47 void
nvif_client_fini(struct nvif_client * client)48 nvif_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
58 const struct nvif_driver *
59 nvif_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
70 int
nvif_client_init(void (* dtor)(struct nvif_client *),const char * driver,const char * name,u64 device,const char * cfg,const char * dbg,struct nvif_client * client)71 nvif_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
100 static void
nvif_client_del(struct nvif_client * client)101 nvif_client_del(struct nvif_client *client)
102 {
103 nvif_client_fini(client);
104 kfree(client);
105 }
106
107 int
nvif_client_new(const char * driver,const char * name,u64 device,const char * cfg,const char * dbg,struct nvif_client ** pclient)108 nvif_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
126 void
nvif_client_ref(struct nvif_client * client,struct nvif_client ** pclient)127 nvif_client_ref(struct nvif_client *client, struct nvif_client **pclient)
128 {
129 nvif_object_ref(&client->base, (struct nvif_object **)pclient);
130 }
131