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/handle.h> 27 #include <core/notify.h> 28 #include <core/option.h> 29 30 #include <nvif/class.h> 31 #include <nvif/event.h> 32 #include <nvif/unpack.h> 33 34 struct nvkm_client_notify { 35 struct nvkm_client *client; 36 struct nvkm_notify n; 37 u8 version; 38 u8 size; 39 union { 40 struct nvif_notify_rep_v0 v0; 41 } rep; 42 }; 43 44 static int 45 nvkm_client_notify(struct nvkm_notify *n) 46 { 47 struct nvkm_client_notify *notify = container_of(n, typeof(*notify), n); 48 struct nvkm_client *client = notify->client; 49 return client->ntfy(¬ify->rep, notify->size, n->data, n->size); 50 } 51 52 int 53 nvkm_client_notify_put(struct nvkm_client *client, int index) 54 { 55 if (index < ARRAY_SIZE(client->notify)) { 56 if (client->notify[index]) { 57 nvkm_notify_put(&client->notify[index]->n); 58 return 0; 59 } 60 } 61 return -ENOENT; 62 } 63 64 int 65 nvkm_client_notify_get(struct nvkm_client *client, int index) 66 { 67 if (index < ARRAY_SIZE(client->notify)) { 68 if (client->notify[index]) { 69 nvkm_notify_get(&client->notify[index]->n); 70 return 0; 71 } 72 } 73 return -ENOENT; 74 } 75 76 int 77 nvkm_client_notify_del(struct nvkm_client *client, int index) 78 { 79 if (index < ARRAY_SIZE(client->notify)) { 80 if (client->notify[index]) { 81 nvkm_notify_fini(&client->notify[index]->n); 82 kfree(client->notify[index]); 83 client->notify[index] = NULL; 84 return 0; 85 } 86 } 87 return -ENOENT; 88 } 89 90 int 91 nvkm_client_notify_new(struct nvkm_object *object, 92 struct nvkm_event *event, void *data, u32 size) 93 { 94 struct nvkm_client *client = nvkm_client(object); 95 struct nvkm_client_notify *notify; 96 union { 97 struct nvif_notify_req_v0 v0; 98 } *req = data; 99 u8 index, reply; 100 int ret; 101 102 for (index = 0; index < ARRAY_SIZE(client->notify); index++) { 103 if (!client->notify[index]) 104 break; 105 } 106 107 if (index == ARRAY_SIZE(client->notify)) 108 return -ENOSPC; 109 110 notify = kzalloc(sizeof(*notify), GFP_KERNEL); 111 if (!notify) 112 return -ENOMEM; 113 114 nv_ioctl(client, "notify new size %d\n", size); 115 if (nvif_unpack(req->v0, 0, 0, true)) { 116 nv_ioctl(client, "notify new vers %d reply %d route %02x " 117 "token %llx\n", req->v0.version, 118 req->v0.reply, req->v0.route, req->v0.token); 119 notify->version = req->v0.version; 120 notify->size = sizeof(notify->rep.v0); 121 notify->rep.v0.version = req->v0.version; 122 notify->rep.v0.route = req->v0.route; 123 notify->rep.v0.token = req->v0.token; 124 reply = req->v0.reply; 125 } 126 127 if (ret == 0) { 128 ret = nvkm_notify_init(object, event, nvkm_client_notify, 129 false, data, size, reply, ¬ify->n); 130 if (ret == 0) { 131 client->notify[index] = notify; 132 notify->client = client; 133 return index; 134 } 135 } 136 137 kfree(notify); 138 return ret; 139 } 140 141 static int 142 nvkm_client_mthd_devlist(struct nvkm_object *object, void *data, u32 size) 143 { 144 union { 145 struct nv_client_devlist_v0 v0; 146 } *args = data; 147 int ret; 148 149 nv_ioctl(object, "client devlist size %d\n", size); 150 if (nvif_unpack(args->v0, 0, 0, true)) { 151 nv_ioctl(object, "client devlist vers %d count %d\n", 152 args->v0.version, args->v0.count); 153 if (size == sizeof(args->v0.device[0]) * args->v0.count) { 154 ret = nvkm_device_list(args->v0.device, args->v0.count); 155 if (ret >= 0) { 156 args->v0.count = ret; 157 ret = 0; 158 } 159 } else { 160 ret = -EINVAL; 161 } 162 } 163 164 return ret; 165 } 166 167 static int 168 nvkm_client_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size) 169 { 170 switch (mthd) { 171 case NV_CLIENT_DEVLIST: 172 return nvkm_client_mthd_devlist(object, data, size); 173 default: 174 break; 175 } 176 return -EINVAL; 177 } 178 179 static void 180 nvkm_client_dtor(struct nvkm_object *object) 181 { 182 struct nvkm_client *client = (void *)object; 183 int i; 184 for (i = 0; i < ARRAY_SIZE(client->notify); i++) 185 nvkm_client_notify_del(client, i); 186 nvkm_object_ref(NULL, &client->device); 187 nvkm_handle_destroy(client->root); 188 nvkm_namedb_destroy(&client->namedb); 189 } 190 191 static struct nvkm_oclass 192 nvkm_client_oclass = { 193 .ofuncs = &(struct nvkm_ofuncs) { 194 .dtor = nvkm_client_dtor, 195 .mthd = nvkm_client_mthd, 196 }, 197 }; 198 199 int 200 nvkm_client_create_(const char *name, u64 devname, const char *cfg, 201 const char *dbg, int length, void **pobject) 202 { 203 struct nvkm_object *device; 204 struct nvkm_client *client; 205 int ret; 206 207 device = (void *)nvkm_device_find(devname); 208 if (!device) 209 return -ENODEV; 210 211 ret = nvkm_namedb_create_(NULL, NULL, &nvkm_client_oclass, 212 NV_CLIENT_CLASS, NULL, 213 (1ULL << NVDEV_ENGINE_DEVICE), 214 length, pobject); 215 client = *pobject; 216 if (ret) 217 return ret; 218 219 ret = nvkm_handle_create(nv_object(client), ~0, ~0, nv_object(client), 220 &client->root); 221 if (ret) 222 return ret; 223 224 /* prevent init/fini being called, os in in charge of this */ 225 atomic_set(&nv_object(client)->usecount, 2); 226 227 nvkm_object_ref(device, &client->device); 228 snprintf(client->name, sizeof(client->name), "%s", name); 229 client->debug = nvkm_dbgopt(dbg, "CLIENT"); 230 return 0; 231 } 232 233 int 234 nvkm_client_init(struct nvkm_client *client) 235 { 236 int ret; 237 nv_debug(client, "init running\n"); 238 ret = nvkm_handle_init(client->root); 239 nv_debug(client, "init completed with %d\n", ret); 240 return ret; 241 } 242 243 int 244 nvkm_client_fini(struct nvkm_client *client, bool suspend) 245 { 246 const char *name[2] = { "fini", "suspend" }; 247 int ret, i; 248 nv_debug(client, "%s running\n", name[suspend]); 249 nv_debug(client, "%s notify\n", name[suspend]); 250 for (i = 0; i < ARRAY_SIZE(client->notify); i++) 251 nvkm_client_notify_put(client, i); 252 nv_debug(client, "%s object\n", name[suspend]); 253 ret = nvkm_handle_fini(client->root, suspend); 254 nv_debug(client, "%s completed with %d\n", name[suspend], ret); 255 return ret; 256 } 257 258 const char * 259 nvkm_client_name(void *obj) 260 { 261 const char *client_name = "unknown"; 262 struct nvkm_client *client = nvkm_client(obj); 263 if (client) 264 client_name = client->name; 265 return client_name; 266 } 267