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/notify.h> 27 #include <core/option.h> 28 29 #include <nvif/class.h> 30 #include <nvif/event.h> 31 #include <nvif/if0000.h> 32 #include <nvif/unpack.h> 33 34 static int 35 nvkm_uclient_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, 36 struct nvkm_object **pobject) 37 { 38 union { 39 struct nvif_client_v0 v0; 40 } *args = argv; 41 struct nvkm_client *client; 42 int ret = -ENOSYS; 43 44 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))){ 45 args->v0.name[sizeof(args->v0.name) - 1] = 0; 46 ret = nvkm_client_new(args->v0.name, args->v0.device, NULL, 47 NULL, oclass->client->ntfy, &client); 48 if (ret) 49 return ret; 50 } else 51 return ret; 52 53 client->object.client = oclass->client; 54 client->object.handle = oclass->handle; 55 client->object.route = oclass->route; 56 client->object.token = oclass->token; 57 client->object.object = oclass->object; 58 client->debug = oclass->client->debug; 59 *pobject = &client->object; 60 return 0; 61 } 62 63 const struct nvkm_sclass 64 nvkm_uclient_sclass = { 65 .oclass = NVIF_CLASS_CLIENT, 66 .minver = 0, 67 .maxver = 0, 68 .ctor = nvkm_uclient_new, 69 }; 70 71 struct nvkm_client_notify { 72 struct nvkm_client *client; 73 struct nvkm_notify n; 74 u8 version; 75 u8 size; 76 union { 77 struct nvif_notify_rep_v0 v0; 78 } rep; 79 }; 80 81 static int 82 nvkm_client_notify(struct nvkm_notify *n) 83 { 84 struct nvkm_client_notify *notify = container_of(n, typeof(*notify), n); 85 struct nvkm_client *client = notify->client; 86 return client->ntfy(¬ify->rep, notify->size, n->data, n->size); 87 } 88 89 int 90 nvkm_client_notify_put(struct nvkm_client *client, int index) 91 { 92 if (index < ARRAY_SIZE(client->notify)) { 93 if (client->notify[index]) { 94 nvkm_notify_put(&client->notify[index]->n); 95 return 0; 96 } 97 } 98 return -ENOENT; 99 } 100 101 int 102 nvkm_client_notify_get(struct nvkm_client *client, int index) 103 { 104 if (index < ARRAY_SIZE(client->notify)) { 105 if (client->notify[index]) { 106 nvkm_notify_get(&client->notify[index]->n); 107 return 0; 108 } 109 } 110 return -ENOENT; 111 } 112 113 int 114 nvkm_client_notify_del(struct nvkm_client *client, int index) 115 { 116 if (index < ARRAY_SIZE(client->notify)) { 117 if (client->notify[index]) { 118 nvkm_notify_fini(&client->notify[index]->n); 119 kfree(client->notify[index]); 120 client->notify[index] = NULL; 121 return 0; 122 } 123 } 124 return -ENOENT; 125 } 126 127 int 128 nvkm_client_notify_new(struct nvkm_object *object, 129 struct nvkm_event *event, void *data, u32 size) 130 { 131 struct nvkm_client *client = object->client; 132 struct nvkm_client_notify *notify; 133 union { 134 struct nvif_notify_req_v0 v0; 135 } *req = data; 136 u8 index, reply; 137 int ret = -ENOSYS; 138 139 for (index = 0; index < ARRAY_SIZE(client->notify); index++) { 140 if (!client->notify[index]) 141 break; 142 } 143 144 if (index == ARRAY_SIZE(client->notify)) 145 return -ENOSPC; 146 147 notify = kzalloc(sizeof(*notify), GFP_KERNEL); 148 if (!notify) 149 return -ENOMEM; 150 151 nvif_ioctl(object, "notify new size %d\n", size); 152 if (!(ret = nvif_unpack(ret, &data, &size, req->v0, 0, 0, true))) { 153 nvif_ioctl(object, "notify new vers %d reply %d route %02x " 154 "token %llx\n", req->v0.version, 155 req->v0.reply, req->v0.route, req->v0.token); 156 notify->version = req->v0.version; 157 notify->size = sizeof(notify->rep.v0); 158 notify->rep.v0.version = req->v0.version; 159 notify->rep.v0.route = req->v0.route; 160 notify->rep.v0.token = req->v0.token; 161 reply = req->v0.reply; 162 } 163 164 if (ret == 0) { 165 ret = nvkm_notify_init(object, event, nvkm_client_notify, 166 false, data, size, reply, ¬ify->n); 167 if (ret == 0) { 168 client->notify[index] = notify; 169 notify->client = client; 170 return index; 171 } 172 } 173 174 kfree(notify); 175 return ret; 176 } 177 178 static const struct nvkm_object_func nvkm_client; 179 struct nvkm_client * 180 nvkm_client_search(struct nvkm_client *client, u64 handle) 181 { 182 struct nvkm_object *object; 183 184 object = nvkm_object_search(client, handle, &nvkm_client); 185 if (IS_ERR(object)) 186 return (void *)object; 187 188 return nvkm_client(object); 189 } 190 191 static int 192 nvkm_client_mthd_devlist(struct nvkm_client *client, void *data, u32 size) 193 { 194 union { 195 struct nvif_client_devlist_v0 v0; 196 } *args = data; 197 int ret = -ENOSYS; 198 199 nvif_ioctl(&client->object, "client devlist size %d\n", size); 200 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) { 201 nvif_ioctl(&client->object, "client devlist vers %d count %d\n", 202 args->v0.version, args->v0.count); 203 if (size == sizeof(args->v0.device[0]) * args->v0.count) { 204 ret = nvkm_device_list(args->v0.device, args->v0.count); 205 if (ret >= 0) { 206 args->v0.count = ret; 207 ret = 0; 208 } 209 } else { 210 ret = -EINVAL; 211 } 212 } 213 214 return ret; 215 } 216 217 static int 218 nvkm_client_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size) 219 { 220 struct nvkm_client *client = nvkm_client(object); 221 switch (mthd) { 222 case NVIF_CLIENT_V0_DEVLIST: 223 return nvkm_client_mthd_devlist(client, data, size); 224 default: 225 break; 226 } 227 return -EINVAL; 228 } 229 230 static int 231 nvkm_client_child_new(const struct nvkm_oclass *oclass, 232 void *data, u32 size, struct nvkm_object **pobject) 233 { 234 return oclass->base.ctor(oclass, data, size, pobject); 235 } 236 237 static int 238 nvkm_client_child_get(struct nvkm_object *object, int index, 239 struct nvkm_oclass *oclass) 240 { 241 const struct nvkm_sclass *sclass; 242 243 switch (index) { 244 case 0: sclass = &nvkm_uclient_sclass; break; 245 case 1: sclass = &nvkm_udevice_sclass; break; 246 default: 247 return -EINVAL; 248 } 249 250 oclass->ctor = nvkm_client_child_new; 251 oclass->base = *sclass; 252 return 0; 253 } 254 255 static int 256 nvkm_client_fini(struct nvkm_object *object, bool suspend) 257 { 258 struct nvkm_client *client = nvkm_client(object); 259 const char *name[2] = { "fini", "suspend" }; 260 int i; 261 nvif_debug(object, "%s notify\n", name[suspend]); 262 for (i = 0; i < ARRAY_SIZE(client->notify); i++) 263 nvkm_client_notify_put(client, i); 264 return 0; 265 } 266 267 static void * 268 nvkm_client_dtor(struct nvkm_object *object) 269 { 270 struct nvkm_client *client = nvkm_client(object); 271 int i; 272 for (i = 0; i < ARRAY_SIZE(client->notify); i++) 273 nvkm_client_notify_del(client, i); 274 return client; 275 } 276 277 static const struct nvkm_object_func 278 nvkm_client = { 279 .dtor = nvkm_client_dtor, 280 .fini = nvkm_client_fini, 281 .mthd = nvkm_client_mthd, 282 .sclass = nvkm_client_child_get, 283 }; 284 285 int 286 nvkm_client_new(const char *name, u64 device, const char *cfg, 287 const char *dbg, 288 int (*ntfy)(const void *, u32, const void *, u32), 289 struct nvkm_client **pclient) 290 { 291 struct nvkm_oclass oclass = { .base = nvkm_uclient_sclass }; 292 struct nvkm_client *client; 293 294 if (!(client = *pclient = kzalloc(sizeof(*client), GFP_KERNEL))) 295 return -ENOMEM; 296 oclass.client = client; 297 298 nvkm_object_ctor(&nvkm_client, &oclass, &client->object); 299 snprintf(client->name, sizeof(client->name), "%s", name); 300 client->device = device; 301 client->debug = nvkm_dbgopt(dbg, "CLIENT"); 302 client->objroot = RB_ROOT; 303 client->ntfy = ntfy; 304 INIT_LIST_HEAD(&client->umem); 305 spin_lock_init(&client->lock); 306 return 0; 307 } 308