usr/src/lib/sun_fc/common/Sun_fcGetNumberOfAdapters.cc

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26
  27
  28 #include "HBAList.h"
  29 #include "Trace.h"
  30 #include <libdevinfo.h>
  31
  32 /**
  33  * @memo            Returns the number of HBAs supported by the library.
  34  * @precondition    Load library must have been called
  35  * @return          The number of adapters detected by this VSL
  36  * @doc             Refer to the HBAList documentation for behavior
  37  * @see             HBAList::getNnumberofAdapters
  38  *
  39  */
  40 extern "C" HBA_UINT32 Sun_fcGetNumberOfAdapters() {
  41         Trace log("Sun_fcGetNumberOfAdapters");
  42         try {
  43             HBAList* list = HBAList::instance();
  44             HBA_UINT32 ret = list->getNumberofAdapters();
  45             if (ret == 0) {
  46                 /* run di_init to forceattach fp and retry it */
  47                 di_node_t root_node;
  48                 if ((root_node = di_init("/", DINFOSUBTREE|DINFOFORCE)) != DI_NODE_NIL) {
  49                         di_fini(root_node);
  50                         return (list->getNumberofAdapters());
  51                 }
  52             }
  53             return (ret);
  54         } catch (...) {
  55             log.internalError(
  56                 "Uncaught exception");
  57             return (0);
  58         }
  59 }