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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sun_sas.h>
mutex_t all_hbas_lock = DEFAULTMUTEX;
mutex_t open_handles_lock = DEFAULTMUTEX;
HBA_UINT16 open_handle_index;
HBA_UINT32 hba_count;
/*
* Loads the HBA Library. Must be called before calling any HBA library
* functions
*
* Return values:
* HBA_STATUS_OK library properly loaded
* HBA_STATUS_ERROR library loaded incorrectly
*/
int loadCount = 0;
HBA_STATUS Sun_sasLoadLibrary() {
const char ROUTINE[] = "Sun_sasLoadLibrary";
di_node_t root;
boolean_t atLeastOneHBA = B_FALSE;
boolean_t atLeastOneFailure = B_FALSE;
hrtime_t start = 0;
hrtime_t end = 0;
double duration = 0;
/* Make sure that library has not been already loaded */
if (loadCount++ > 0) {
log(LOG_DEBUG, ROUTINE, "Library already loaded %d time."
" Ignoring.", loadCount);
return (HBA_STATUS_ERROR);
}
hba_count = 0;
open_handle_index = 1;
/* grab write lock */
lock(&all_hbas_lock);
start = gethrtime();
if ((root = di_init("/", DINFOCACHE)) == DI_NODE_NIL) {
log(LOG_DEBUG, ROUTINE,
"Unable to load device tree: \"%s\"",
strerror(errno));
unlock(&all_hbas_lock);
return (HBA_STATUS_ERROR);
}
end = gethrtime();
duration = end - start;
duration /= HR_SECOND;
log(LOG_DEBUG, ROUTINE, "Loading device tree init took "
"%.6f seconds", duration);
/* At load time, we only gather libdevinfo information */
if (devtree_get_all_hbas(root) == HBA_STATUS_OK) {
atLeastOneHBA = B_TRUE;
} else {
atLeastOneFailure = B_TRUE;
}
di_fini(root);
unlock(&all_hbas_lock);
/* Now determine what status code to return */
if (atLeastOneHBA) {
/* We've got at least one HBA and possibly some failures */
return (HBA_STATUS_OK);
}
if (atLeastOneFailure) {
/* We have no HBAs but have failures */
return (HBA_STATUS_ERROR);
}
/* We have no HBAs and no failures */
return (HBA_STATUS_OK);
}
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