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
33 static int
nvkm_uclient_new(const struct nvkm_oclass * oclass,void * argv,u32 argc,struct nvkm_object ** pobject)34 nvkm_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
62 static const struct nvkm_sclass
63 nvkm_uclient_sclass = {
64 .oclass = NVIF_CLASS_CLIENT,
65 .minver = 0,
66 .maxver = 0,
67 .ctor = nvkm_uclient_new,
68 };
69
70 static const struct nvkm_object_func nvkm_client;
71 struct nvkm_client *
nvkm_client_search(struct nvkm_client * client,u64 handle)72 nvkm_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
83 static int
nvkm_client_mthd_devlist(struct nvkm_client * client,void * data,u32 size)84 nvkm_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
109 static int
nvkm_client_mthd(struct nvkm_object * object,u32 mthd,void * data,u32 size)110 nvkm_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
122 static int
nvkm_client_child_new(const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)123 nvkm_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
129 static int
nvkm_client_child_get(struct nvkm_object * object,int index,struct nvkm_oclass * oclass)130 nvkm_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
147 static int
nvkm_client_fini(struct nvkm_object * object,bool suspend)148 nvkm_client_fini(struct nvkm_object *object, bool suspend)
149 {
150 return 0;
151 }
152
153 static void *
nvkm_client_dtor(struct nvkm_object * object)154 nvkm_client_dtor(struct nvkm_object *object)
155 {
156 return nvkm_client(object);
157 }
158
159 static const struct nvkm_object_func
160 nvkm_client = {
161 .dtor = nvkm_client_dtor,
162 .fini = nvkm_client_fini,
163 .mthd = nvkm_client_mthd,
164 .sclass = nvkm_client_child_get,
165 };
166
167 int
nvkm_client_new(const char * name,u64 device,const char * cfg,const char * dbg,int (* event)(u64,void *,u32),struct nvkm_client ** pclient)168 nvkm_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