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 #include "nouveau_usif.h"
41
42 static void
nvkm_client_unmap(void * priv,void __iomem * ptr,u32 size)43 nvkm_client_unmap(void *priv, void __iomem *ptr, u32 size)
44 {
45 iounmap(ptr);
46 }
47
48 static void __iomem *
nvkm_client_map(void * priv,u64 handle,u32 size)49 nvkm_client_map(void *priv, u64 handle, u32 size)
50 {
51 return ioremap(handle, size);
52 }
53
54 static int
nvkm_client_ioctl(void * priv,bool super,void * data,u32 size,void ** hack)55 nvkm_client_ioctl(void *priv, bool super, void *data, u32 size, void **hack)
56 {
57 return nvkm_ioctl(priv, super, data, size, hack);
58 }
59
60 static int
nvkm_client_resume(void * priv)61 nvkm_client_resume(void *priv)
62 {
63 return nouveau_client_init(priv);
64 }
65
66 static int
nvkm_client_suspend(void * priv)67 nvkm_client_suspend(void *priv)
68 {
69 return nouveau_client_fini(priv, true);
70 }
71
72 static void
nvkm_client_fini(void * priv)73 nvkm_client_fini(void *priv)
74 {
75 struct nouveau_object *client = priv;
76 nouveau_client_fini(nv_client(client), false);
77 atomic_set(&client->refcount, 1);
78 nouveau_object_ref(NULL, &client);
79 }
80
81 static int
nvkm_client_ntfy(const void * header,u32 length,const void * data,u32 size)82 nvkm_client_ntfy(const void *header, u32 length, const void *data, u32 size)
83 {
84 const union {
85 struct nvif_notify_req_v0 v0;
86 } *args = header;
87 u8 route;
88
89 if (length == sizeof(args->v0) && args->v0.version == 0) {
90 route = args->v0.route;
91 } else {
92 WARN_ON(1);
93 return NVKM_NOTIFY_DROP;
94 }
95
96 switch (route) {
97 case NVDRM_NOTIFY_NVIF:
98 return nvif_notify(header, length, data, size);
99 case NVDRM_NOTIFY_USIF:
100 return usif_notify(header, length, data, size);
101 default:
102 WARN_ON(1);
103 break;
104 }
105
106 return NVKM_NOTIFY_DROP;
107 }
108
109 static int
nvkm_client_init(const char * name,u64 device,const char * cfg,const char * dbg,void ** ppriv)110 nvkm_client_init(const char *name, u64 device, const char *cfg,
111 const char *dbg, void **ppriv)
112 {
113 struct nouveau_client *client;
114 int ret;
115
116 ret = nouveau_client_create(name, device, cfg, dbg, &client);
117 *ppriv = client;
118 if (ret)
119 return ret;
120
121 client->ntfy = nvkm_client_ntfy;
122 return 0;
123 }
124
125 const struct nvif_driver
126 nvif_driver_nvkm = {
127 .name = "nvkm",
128 .init = nvkm_client_init,
129 .fini = nvkm_client_fini,
130 .suspend = nvkm_client_suspend,
131 .resume = nvkm_client_resume,
132 .ioctl = nvkm_client_ioctl,
133 .map = nvkm_client_map,
134 .unmap = nvkm_client_unmap,
135 .keep = false,
136 };
137