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
43 nvkm_client_unmap(void *priv, void __iomem *ptr, u32 size)
44 {
45 	iounmap(ptr);
46 }
47 
48 static void __iomem *
49 nvkm_client_map(void *priv, u64 handle, u32 size)
50 {
51 	return ioremap(handle, size);
52 }
53 
54 static int
55 nvkm_client_ioctl(void *priv, void *data, u32 size, void **hack)
56 {
57 	return nvkm_ioctl(priv, data, size, hack);
58 }
59 
60 static int
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
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
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
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