Changeset a92cf94f in mainline for uspace/srv/devman/devman.c


Ignore:
Timestamp:
2011-08-18T18:45:42Z (13 years ago)
Author:
Petr Koupy <petr.koupy@…>
Branches:
lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
Children:
1f44b056
Parents:
ee24574 (diff), f55b12b (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.
Message:

Merge libposix changes.

File:
1 edited

Legend:

Unmodified
Added
Removed

  • uspace/srv/devman/devman.c

    ree24574 ra92cf94f  
    7373}
    7474
    75 static int loc_devices_class_compare(unsigned long key[], hash_count_t keys,
    76     link_t *item)
    77 {
    78         dev_class_info_t *class_info
    79             = hash_table_get_instance(item, dev_class_info_t, loc_link);
    80         assert(class_info != NULL);
    81 
    82         return (class_info->service_id == (service_id_t) key[0]);
    83 }
    84 
    8575static void devices_remove_callback(link_t *item)
    8676{
    … …  
    10292        .hash = devices_hash,
    10393        .compare = loc_functions_compare,
    104         .remove_callback = devices_remove_callback
    105 };
    106 
    107 static hash_table_operations_t loc_devices_class_ops = {
    108         .hash = devices_hash,
    109         .compare = loc_devices_class_compare,
    11094        .remove_callback = devices_remove_callback
    11195};
    … …  
    950934                link_initialize(&res->dev_functions);
    951935                list_initialize(&res->match_ids.ids);
    952                 list_initialize(&res->classes);
    953936                link_initialize(&res->devman_fun);
    954937                link_initialize(&res->loc_fun);
    … …  
    11931176}
    11941177
    1195 /** Find function node by its class name and index. */
    1196 fun_node_t *find_fun_node_by_class(class_list_t *class_list,
    1197     const char *class_name, const char *dev_name)
    1198 {
    1199         assert(class_list != NULL);
    1200         assert(class_name != NULL);
    1201         assert(dev_name != NULL);
    1202 
    1203         fibril_rwlock_read_lock(&class_list->rwlock);
    1204 
    1205         dev_class_t *cl = find_dev_class_no_lock(class_list, class_name);
    1206         if (cl == NULL) {
    1207                 fibril_rwlock_read_unlock(&class_list->rwlock);
    1208                 return NULL;
    1209         }
    1210 
    1211         dev_class_info_t *dev = find_dev_in_class(cl, dev_name);
    1212         if (dev == NULL) {
    1213                 fibril_rwlock_read_unlock(&class_list->rwlock);
    1214                 return NULL;
    1215         }
    1216 
    1217         fun_node_t *fun = dev->fun;
    1218 
    1219         fibril_rwlock_read_unlock(&class_list->rwlock);
    1220 
    1221         return fun;
    1222 }
    1223 
    1224 
    12251178/** Find child function node with a specified name.
    12261179 *
    … …  
    12351188        return find_fun_node_in_device(pfun->child, name);
    12361189}
    1237 
    1238 /* Device classes */
    1239 
    1240 /** Create device class.
    1241  *
    1242  * @return      Device class.
    1243  */
    1244 dev_class_t *create_dev_class(void)
    1245 {
    1246         dev_class_t *cl;
    1247        
    1248         cl = (dev_class_t *) malloc(sizeof(dev_class_t));
    1249         if (cl != NULL) {
    1250                 memset(cl, 0, sizeof(dev_class_t));
    1251                 list_initialize(&cl->devices);
    1252                 fibril_mutex_initialize(&cl->mutex);
    1253         }
    1254        
    1255         return cl;
    1256 }
    1257 
    1258 /** Create device class info.
    1259  *
    1260  * @return              Device class info.
    1261  */
    1262 dev_class_info_t *create_dev_class_info(void)
    1263 {
    1264         dev_class_info_t *info;
    1265        
    1266         info = (dev_class_info_t *) malloc(sizeof(dev_class_info_t));
    1267         if (info != NULL) {
    1268                 memset(info, 0, sizeof(dev_class_info_t));
    1269                 link_initialize(&info->dev_classes);
    1270                 link_initialize(&info->loc_link);
    1271                 link_initialize(&info->link);
    1272         }
    1273        
    1274         return info;
    1275 }
    1276 
    1277 size_t get_new_class_dev_idx(dev_class_t *cl)
    1278 {
    1279         size_t dev_idx;
    1280        
    1281         fibril_mutex_lock(&cl->mutex);
    1282         dev_idx = ++cl->curr_dev_idx;
    1283         fibril_mutex_unlock(&cl->mutex);
    1284        
    1285         return dev_idx;
    1286 }
    1287 
    1288 
    1289 /** Create unique device name within the class.
    1290  *
    1291  * @param cl            The class.
    1292  * @param base_dev_name Contains the base name for the device if it was
    1293  *                      specified by the driver when it registered the device by
    1294  *                      the class; NULL if driver specified no base name.
    1295  * @return              The unique name for the device within the class.
    1296  */
    1297 char *create_dev_name_for_class(dev_class_t *cl, const char *base_dev_name)
    1298 {
    1299         char *dev_name;
    1300         const char *base_name;
    1301        
    1302         if (base_dev_name != NULL)
    1303                 base_name = base_dev_name;
    1304         else
    1305                 base_name = cl->base_dev_name;
    1306        
    1307         size_t idx = get_new_class_dev_idx(cl);
    1308         asprintf(&dev_name, "%s%zu", base_name, idx);
    1309        
    1310         return dev_name;
    1311 }
    1312 
    1313 /** Add the device function to the class.
    1314  *
    1315  * The device may be added to multiple classes and a class may contain multiple
    1316  * devices. The class and the device are associated with each other by the
    1317  * dev_class_info_t structure.
    1318  *
    1319  * @param dev           The device.
    1320  * @param class         The class.
    1321  * @param base_dev_name The base name of the device within the class if
    1322  *                      specified by the driver, NULL otherwise.
    1323  * @return              dev_class_info_t structure which associates the device
    1324  *                      with the class.
    1325  */
    1326 dev_class_info_t *add_function_to_class(fun_node_t *fun, dev_class_t *cl,
    1327     const char *base_dev_name)
    1328 {
    1329         dev_class_info_t *info;
    1330 
    1331         assert(fun != NULL);
    1332         assert(cl != NULL);
    1333 
    1334         info = create_dev_class_info();
    1335 
    1336        
    1337         if (info != NULL) {
    1338                 info->dev_class = cl;
    1339                 info->fun = fun;
    1340                
    1341                 /* Add the device to the class. */
    1342                 fibril_mutex_lock(&cl->mutex);
    1343                 list_append(&info->link, &cl->devices);
    1344                 fibril_mutex_unlock(&cl->mutex);
    1345                
    1346                 /* Add the class to the device. */
    1347                 list_append(&info->dev_classes, &fun->classes);
    1348                
    1349                 /* Create unique name for the device within the class. */
    1350                 info->dev_name = create_dev_name_for_class(cl, base_dev_name);
    1351         }
    1352        
    1353         return info;
    1354 }
    1355 
    1356 dev_class_t *get_dev_class(class_list_t *class_list, char *class_name)
    1357 {
    1358         dev_class_t *cl;
    1359        
    1360         fibril_rwlock_write_lock(&class_list->rwlock);
    1361         cl = find_dev_class_no_lock(class_list, class_name);
    1362         if (cl == NULL) {
    1363                 cl = create_dev_class();
    1364                 if (cl != NULL) {
    1365                         cl->name = class_name;
    1366                         cl->base_dev_name = "";
    1367                         add_dev_class_no_lock(class_list, cl);
    1368                 }
    1369         }
    1370 
    1371         fibril_rwlock_write_unlock(&class_list->rwlock);
    1372         return cl;
    1373 }
    1374 
    1375 dev_class_t *find_dev_class_no_lock(class_list_t *class_list,
    1376     const char *class_name)
    1377 {
    1378         dev_class_t *cl;
    1379        
    1380         list_foreach(class_list->classes, link) {
    1381                 cl = list_get_instance(link, dev_class_t, link);
    1382                 if (str_cmp(cl->name, class_name) == 0) {
    1383                         return cl;
    1384                 }
    1385         }
    1386        
    1387         return NULL;
    1388 }
    1389 
    1390 void add_dev_class_no_lock(class_list_t *class_list, dev_class_t *cl)
    1391 {
    1392         list_append(&cl->link, &class_list->classes);
    1393 }
    1394 
    1395 dev_class_info_t *find_dev_in_class(dev_class_t *dev_class, const char *dev_name)
    1396 {
    1397         assert(dev_class != NULL);
    1398         assert(dev_name != NULL);
    1399 
    1400         list_foreach(dev_class->devices, link) {
    1401                 dev_class_info_t *dev = list_get_instance(link,
    1402                     dev_class_info_t, link);
    1403 
    1404                 if (str_cmp(dev->dev_name, dev_name) == 0) {
    1405                         return dev;
    1406                 }
    1407         }
    1408 
    1409         return NULL;
    1410 }
    1411 
    1412 void init_class_list(class_list_t *class_list)
    1413 {
    1414         list_initialize(&class_list->classes);
    1415         fibril_rwlock_initialize(&class_list->rwlock);
    1416         hash_table_create(&class_list->loc_functions, DEVICE_BUCKETS, 1,
    1417             &loc_devices_class_ops);
    1418 }
    1419 
    14201190
    14211191/* loc devices */
    … …  
    14361206}
    14371207
    1438 fun_node_t *find_loc_class_function(class_list_t *classes,
    1439     service_id_t service_id)
    1440 {
    1441         fun_node_t *fun = NULL;
    1442         dev_class_info_t *cli;
    1443         link_t *link;
    1444         unsigned long key = (unsigned long)service_id;
    1445        
    1446         fibril_rwlock_read_lock(&classes->rwlock);
    1447         link = hash_table_find(&classes->loc_functions, &key);
    1448         if (link != NULL) {
    1449                 cli = hash_table_get_instance(link, dev_class_info_t,
    1450                     loc_link);
    1451                 fun = cli->fun;
    1452         }
    1453         fibril_rwlock_read_unlock(&classes->rwlock);
    1454        
    1455         return fun;
    1456 }
    1457 
    1458 void class_add_loc_function(class_list_t *class_list, dev_class_info_t *cli)
    1459 {
    1460         unsigned long key = (unsigned long) cli->service_id;
    1461        
    1462         fibril_rwlock_write_lock(&class_list->rwlock);
    1463         hash_table_insert(&class_list->loc_functions, &key, &cli->loc_link);
    1464         fibril_rwlock_write_unlock(&class_list->rwlock);
    1465 
    1466         assert(find_loc_class_function(class_list, cli->service_id) != NULL);
    1467 }
    1468 
    14691208void tree_add_loc_function(dev_tree_t *tree, fun_node_t *fun)
    14701209{
Note: See TracChangeset for help on using the changeset viewer.