/*
* 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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include "Trace.h"
#include "Handle.h"
#include "HBA.h"
#include "HBAPort.h"
#include "Exceptions.h"
#include "sun_fc.h"
#include <unistd.h>
#define BUSY_SLEEP 1000000 /* 1/100 second */
#define BUSY_RETRY_TIMER 5000000000ULL /* Retry for 5 seconds */
#ifdef __cplusplus
extern "C" {
#endif
/**
* @memo Send a SCSI inquiry to a remote WWN
* @return HBA_STATUS_OK or other error code
* scsiStatus should be checked to ensure SCSI command
* was a success.
* @param handle The HBA to operate on
* @param portWWN Indicates the HBA port to send command through
* @param targetPortWWN Indicates the target to send command to
* @param fcLun Indicates the target unit to send command to
* @param cdb1 The first CDB byte
* @param cdb2 The second CDB byte
* @param responseBuffer User-allocated response buffer
* @param responseSize Size of User-allocated response buffer
* @param scsiStatus User-allocated scsi status byte
*
* @doc This routine will attempt a limited number of retries
* When busy or again errors are encountered.
*/
HBA_STATUS
Sun_fcScsiInquiryV2(HBA_HANDLE handle, HBA_WWN portWWN, HBA_WWN targetPortWWN,
HBA_UINT64 fcLun, HBA_UINT8 cdb1, HBA_UINT8 cdb2,
void *responseBuffer, HBA_UINT32 *responseSize,
HBA_UINT8 *scsiStatus,
void *senseBuffer, HBA_UINT32 *senseSize) {
Trace log("Sun_fcScsiInquiryV2");
hrtime_t start = gethrtime();
hrtime_t end = start + BUSY_RETRY_TIMER;
for (hrtime_t cur = start; cur < end; cur = gethrtime()) {
try {
Handle *myHandle = Handle::findHandle(handle);
HBA *hba = myHandle->getHBA();
HBAPort *port = hba->getPort(wwnConversion(portWWN.wwn));
port->sendScsiInquiry(wwnConversion(targetPortWWN.wwn), fcLun,
cdb1, cdb2, responseBuffer, responseSize,
scsiStatus, senseBuffer, senseSize);
return (HBA_STATUS_OK);
} catch (BusyException &e) {
usleep(BUSY_SLEEP);
continue;
} catch (TryAgainException &e) {
usleep(BUSY_SLEEP);
continue;
} catch (HBAException &e) {
return (e.getErrorCode());
} catch (...) {
log.internalError(
"Uncaught exception");
return (HBA_STATUS_ERROR);
}
}
}
#ifdef __cplusplus
}
#endif