xref: /illumos-gate/usr/src/lib/sun_sas/common/Sun_sasOpenAdapter.c (revision c9ffe217655ce62448bdb45d6f113f43b4dfcc54)
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 /*
23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 /*
27  * Copyright 2019 Joyent, Inc.
28  */
29 
30 #include    <sun_sas.h>
31 
32 /*
33  * Opens a named adapter.
34  * By opening an adapter, an upper level application is ensuring that all access
35  * to an HBA_HANDLE between and open and a close is to the same adapter.
36  *
37  * Sun_sasOpenAdapter just creates a new handle and returns the handle.
38  * It does not do a driver open
39  */
40 HBA_HANDLE Sun_sasOpenAdapter(char *name) {
41 	const char		ROUTINE[] = "Sun_sasOpenAdapter";
42 	struct sun_sas_hba	*hba_ptr;
43 
44 	if (name == NULL) {
45 	    log(LOG_DEBUG, ROUTINE, "NULL adapter name.");
46 	    return (HANDLE_ERROR);
47 	}
48 	lock(&all_hbas_lock);
49 	for (hba_ptr = global_hba_head; hba_ptr != NULL;
50 		hba_ptr = hba_ptr->next) {
51 	    if (strcmp(hba_ptr->handle_name, name) == 0) {
52 		    break;
53 	    }
54 	}
55 	unlock(&all_hbas_lock);
56 	if (hba_ptr == NULL) {
57 	    log(LOG_DEBUG, ROUTINE, "Invalid adapter name \"%s\"", name);
58 	    return (HANDLE_ERROR);
59 	}
60 
61 	return (CreateHandle(hba_ptr->index));
62 }
63