1/*
2 * Copyright 2012 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
23 */
24#include <core/client.h>
25#include <core/device.h>
26#include <core/option.h>
27
28#include <nvif/class.h>
29#include <nvif/event.h>
30#include <nvif/if0000.h>
31#include <nvif/unpack.h>
32
33static int
34nvkm_uclient_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
35		 struct nvkm_object **pobject)
36{
37	union {
38		struct nvif_client_v0 v0;
39	} *args = argv;
40	struct nvkm_client *client;
41	int ret = -ENOSYS;
42
43	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))){
44		args->v0.name[sizeof(args->v0.name) - 1] = 0;
45		ret = nvkm_client_new(args->v0.name, args->v0.device, NULL,
46				      NULL, oclass->client->event, &client);
47		if (ret)
48			return ret;
49	} else
50		return ret;
51
52	client->object.client = oclass->client;
53	client->object.handle = oclass->handle;
54	client->object.route  = oclass->route;
55	client->object.token  = oclass->token;
56	client->object.object = oclass->object;
57	client->debug = oclass->client->debug;
58	*pobject = &client->object;
59	return 0;
60}
61
62static const struct nvkm_sclass
63nvkm_uclient_sclass = {
64	.oclass = NVIF_CLASS_CLIENT,
65	.minver = 0,
66	.maxver = 0,
67	.ctor = nvkm_uclient_new,
68};
69
70static const struct nvkm_object_func nvkm_client;
71struct nvkm_client *
72nvkm_client_search(struct nvkm_client *client, u64 handle)
73{
74	struct nvkm_object *object;
75
76	object = nvkm_object_search(client, handle, &nvkm_client);
77	if (IS_ERR(object))
78		return (void *)object;
79
80	return nvkm_client(object);
81}
82
83static int
84nvkm_client_mthd_devlist(struct nvkm_client *client, void *data, u32 size)
85{
86	union {
87		struct nvif_client_devlist_v0 v0;
88	} *args = data;
89	int ret = -ENOSYS;
90
91	nvif_ioctl(&client->object, "client devlist size %d\n", size);
92	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
93		nvif_ioctl(&client->object, "client devlist vers %d count %d\n",
94			   args->v0.version, args->v0.count);
95		if (size == sizeof(args->v0.device[0]) * args->v0.count) {
96			ret = nvkm_device_list(args->v0.device, args->v0.count);
97			if (ret >= 0) {
98				args->v0.count = ret;
99				ret = 0;
100			}
101		} else {
102			ret = -EINVAL;
103		}
104	}
105
106	return ret;
107}
108
109static int
110nvkm_client_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
111{
112	struct nvkm_client *client = nvkm_client(object);
113	switch (mthd) {
114	case NVIF_CLIENT_V0_DEVLIST:
115		return nvkm_client_mthd_devlist(client, data, size);
116	default:
117		break;
118	}
119	return -EINVAL;
120}
121
122static int
123nvkm_client_child_new(const struct nvkm_oclass *oclass,
124		      void *data, u32 size, struct nvkm_object **pobject)
125{
126	return oclass->base.ctor(oclass, data, size, pobject);
127}
128
129static int
130nvkm_client_child_get(struct nvkm_object *object, int index,
131		      struct nvkm_oclass *oclass)
132{
133	const struct nvkm_sclass *sclass;
134
135	switch (index) {
136	case 0: sclass = &nvkm_uclient_sclass; break;
137	case 1: sclass = &nvkm_udevice_sclass; break;
138	default:
139		return -EINVAL;
140	}
141
142	oclass->ctor = nvkm_client_child_new;
143	oclass->base = *sclass;
144	return 0;
145}
146
147static int
148nvkm_client_fini(struct nvkm_object *object, bool suspend)
149{
150	return 0;
151}
152
153static void *
154nvkm_client_dtor(struct nvkm_object *object)
155{
156	return nvkm_client(object);
157}
158
159static const struct nvkm_object_func
160nvkm_client = {
161	.dtor = nvkm_client_dtor,
162	.fini = nvkm_client_fini,
163	.mthd = nvkm_client_mthd,
164	.sclass = nvkm_client_child_get,
165};
166
167int
168nvkm_client_new(const char *name, u64 device, const char *cfg, const char *dbg,
169		int (*event)(u64, void *, u32), struct nvkm_client **pclient)
170{
171	struct nvkm_oclass oclass = { .base = nvkm_uclient_sclass };
172	struct nvkm_client *client;
173
174	if (!(client = *pclient = kzalloc(sizeof(*client), GFP_KERNEL)))
175		return -ENOMEM;
176	oclass.client = client;
177
178	nvkm_object_ctor(&nvkm_client, &oclass, &client->object);
179	snprintf(client->name, sizeof(client->name), "%s", name);
180	client->device = device;
181	client->debug = nvkm_dbgopt(dbg, "CLIENT");
182	client->objroot = RB_ROOT;
183	spin_lock_init(&client->obj_lock);
184	client->event = event;
185	INIT_LIST_HEAD(&client->umem);
186	spin_lock_init(&client->lock);
187	return 0;
188}
189