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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 | ||
25 | /******************************************************************************* | |
26 | * NVIF client driver - NVKM directly linked | |
27 | ******************************************************************************/ | |
28 | ||
29 | #include <core/client.h> | |
30 | #include <core/notify.h> | |
31 | #include <core/ioctl.h> | |
32 | ||
33 | #include <nvif/client.h> | |
34 | #include <nvif/driver.h> | |
35 | #include <nvif/notify.h> | |
36 | #include <nvif/event.h> | |
37 | #include <nvif/ioctl.h> | |
38 | ||
39 | #include "nouveau_drm.h" | |
40 | ||
41 | static void | |
42 | nvkm_client_unmap(void *priv, void *ptr, u32 size) | |
43 | { | |
44 | iounmap(ptr); | |
45 | } | |
46 | ||
47 | static void * | |
48 | nvkm_client_map(void *priv, u64 handle, u32 size) | |
49 | { | |
50 | return ioremap(handle, size); | |
51 | } | |
52 | ||
53 | static int | |
54 | nvkm_client_ioctl(void *priv, bool super, void *data, u32 size, void **hack) | |
55 | { | |
56 | return nvkm_ioctl(priv, super, data, size, hack); | |
57 | } | |
58 | ||
59 | static int | |
60 | nvkm_client_resume(void *priv) | |
61 | { | |
62 | return nouveau_client_init(priv); | |
63 | } | |
64 | ||
65 | static int | |
66 | nvkm_client_suspend(void *priv) | |
67 | { | |
68 | return nouveau_client_fini(priv, true); | |
69 | } | |
70 | ||
71 | static void | |
72 | nvkm_client_fini(void *priv) | |
73 | { | |
74 | struct nouveau_object *client = priv; | |
75 | nouveau_client_fini(nv_client(client), false); | |
76 | atomic_set(&client->refcount, 1); | |
77 | nouveau_object_ref(NULL, &client); | |
78 | } | |
79 | ||
80 | static int | |
81 | nvkm_client_ntfy(const void *header, u32 length, const void *data, u32 size) | |
82 | { | |
83 | const union { | |
84 | struct nvif_notify_req_v0 v0; | |
85 | } *args = header; | |
86 | u8 route; | |
87 | ||
88 | if (length == sizeof(args->v0) && args->v0.version == 0) { | |
89 | route = args->v0.route; | |
90 | } else { | |
91 | WARN_ON(1); | |
92 | return NVKM_NOTIFY_DROP; | |
93 | } | |
94 | ||
95 | switch (route) { | |
96 | case NVDRM_NOTIFY_NVIF: | |
97 | return nvif_notify(header, length, data, size); | |
98 | default: | |
99 | WARN_ON(1); | |
100 | break; | |
101 | } | |
102 | ||
103 | return NVKM_NOTIFY_DROP; | |
104 | } | |
105 | ||
106 | static int | |
107 | nvkm_client_init(const char *name, u64 device, const char *cfg, | |
108 | const char *dbg, void **ppriv) | |
109 | { | |
110 | struct nouveau_client *client; | |
111 | int ret; | |
112 | ||
113 | ret = nouveau_client_create(name, device, cfg, dbg, &client); | |
114 | *ppriv = client; | |
115 | if (ret) | |
116 | return ret; | |
117 | ||
118 | client->ntfy = nvkm_client_ntfy; | |
119 | return 0; | |
120 | } | |
121 | ||
122 | const struct nvif_driver | |
123 | nvif_driver_nvkm = { | |
124 | .name = "nvkm", | |
125 | .init = nvkm_client_init, | |
126 | .fini = nvkm_client_fini, | |
127 | .suspend = nvkm_client_suspend, | |
128 | .resume = nvkm_client_resume, | |
129 | .ioctl = nvkm_client_ioctl, | |
130 | .map = nvkm_client_map, | |
131 | .unmap = nvkm_client_unmap, | |
132 | .keep = false, | |
133 | }; |