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_drv.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 struct nvkm_client *client = priv;
64 return nvkm_object_init(&client->object);
65 }
66
67 static int
nvkm_client_suspend(void * priv)68 nvkm_client_suspend(void *priv)
69 {
70 struct nvkm_client *client = priv;
71 return nvkm_object_fini(&client->object, true);
72 }
73
74 static int
nvkm_client_ntfy(const void * header,u32 length,const void * data,u32 size)75 nvkm_client_ntfy(const void *header, u32 length, const void *data, u32 size)
76 {
77 const union {
78 struct nvif_notify_req_v0 v0;
79 } *args = header;
80 u8 route;
81
82 if (length == sizeof(args->v0) && args->v0.version == 0) {
83 route = args->v0.route;
84 } else {
85 WARN_ON(1);
86 return NVKM_NOTIFY_DROP;
87 }
88
89 switch (route) {
90 case NVDRM_NOTIFY_NVIF:
91 return nvif_notify(header, length, data, size);
92 case NVDRM_NOTIFY_USIF:
93 return usif_notify(header, length, data, size);
94 default:
95 WARN_ON(1);
96 break;
97 }
98
99 return NVKM_NOTIFY_DROP;
100 }
101
102 static int
nvkm_client_driver_init(const char * name,u64 device,const char * cfg,const char * dbg,void ** ppriv)103 nvkm_client_driver_init(const char *name, u64 device, const char *cfg,
104 const char *dbg, void **ppriv)
105 {
106 return nvkm_client_new(name, device, cfg, dbg, nvkm_client_ntfy,
107 (struct nvkm_client **)ppriv);
108 }
109
110 const struct nvif_driver
111 nvif_driver_nvkm = {
112 .name = "nvkm",
113 .init = nvkm_client_driver_init,
114 .suspend = nvkm_client_suspend,
115 .resume = nvkm_client_resume,
116 .ioctl = nvkm_client_ioctl,
117 .map = nvkm_client_map,
118 .unmap = nvkm_client_unmap,
119 .keep = false,
120 };
121
