xref: /titanic_44/usr/src/lib/sun_fc/common/Sun_fcGetNumberOfAdapters.cc (revision 49b225e1cfa7bbf7738d4df0a03f18e3283426eb)
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 }
60