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
42static void
43nvkm_client_unmap(void *priv, void __iomem *ptr, u32 size)
44{
45	iounmap(ptr);
46}
47
48static void __iomem *
49nvkm_client_map(void *priv, u64 handle, u32 size)
50{
51	return ioremap(handle, size);
52}
53
54static int
55nvkm_client_ioctl(void *priv, bool super, void *data, u32 size, void **hack)
56{
57	return nvkm_ioctl(priv, super, data, size, hack);
58}
59
60static int
61nvkm_client_resume(void *priv)
62{
63	return nouveau_client_init(priv);
64}
65
66static int
67nvkm_client_suspend(void *priv)
68{
69	return nouveau_client_fini(priv, true);
70}
71
72static void
73nvkm_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
81static int
82nvkm_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
109static int
110nvkm_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
125const struct nvif_driver
126nvif_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