1*fcf3ce44SJohn Forte /* 2*fcf3ce44SJohn Forte * CDDL HEADER START 3*fcf3ce44SJohn Forte * 4*fcf3ce44SJohn Forte * The contents of this file are subject to the terms of the 5*fcf3ce44SJohn Forte * Common Development and Distribution License (the "License"). 6*fcf3ce44SJohn Forte * You may not use this file except in compliance with the License. 7*fcf3ce44SJohn Forte * 8*fcf3ce44SJohn Forte * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*fcf3ce44SJohn Forte * or http://www.opensolaris.org/os/licensing. 10*fcf3ce44SJohn Forte * See the License for the specific language governing permissions 11*fcf3ce44SJohn Forte * and limitations under the License. 12*fcf3ce44SJohn Forte * 13*fcf3ce44SJohn Forte * When distributing Covered Code, include this CDDL HEADER in each 14*fcf3ce44SJohn Forte * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*fcf3ce44SJohn Forte * If applicable, add the following below this CDDL HEADER, with the 16*fcf3ce44SJohn Forte * fields enclosed by brackets "[]" replaced with your own identifying 17*fcf3ce44SJohn Forte * information: Portions Copyright [yyyy] [name of copyright owner] 18*fcf3ce44SJohn Forte * 19*fcf3ce44SJohn Forte * CDDL HEADER END 20*fcf3ce44SJohn Forte */ 21*fcf3ce44SJohn Forte /* 22*fcf3ce44SJohn Forte * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23*fcf3ce44SJohn Forte * Use is subject to license terms. 24*fcf3ce44SJohn Forte */ 25*fcf3ce44SJohn Forte 26*fcf3ce44SJohn Forte 27*fcf3ce44SJohn Forte 28*fcf3ce44SJohn Forte #include "Trace.h" 29*fcf3ce44SJohn Forte #include "HBA.h" 30*fcf3ce44SJohn Forte #include "HBAPort.h" 31*fcf3ce44SJohn Forte #include "Exceptions.h" 32*fcf3ce44SJohn Forte #include "sun_fc.h" 33*fcf3ce44SJohn Forte #include <unistd.h> 34*fcf3ce44SJohn Forte 35*fcf3ce44SJohn Forte #define BUSY_SLEEP 1000 /* 1/100 second */ 36*fcf3ce44SJohn Forte #define BUSY_RETRY_TIMER 5000000000ULL /* Retry for 5 seconds */ 37*fcf3ce44SJohn Forte #ifdef __cplusplus 38*fcf3ce44SJohn Forte extern "C" { 39*fcf3ce44SJohn Forte #endif 40*fcf3ce44SJohn Forte 41*fcf3ce44SJohn Forte /** 42*fcf3ce44SJohn Forte * @memo Send a read capacity to a remote WWN 43*fcf3ce44SJohn Forte * @return HBA_STATUS_OK or other error code 44*fcf3ce44SJohn Forte * scsiStatus should be checked to ensure SCSI command 45*fcf3ce44SJohn Forte * was a success. 46*fcf3ce44SJohn Forte * @param handle The HBA to operate on 47*fcf3ce44SJohn Forte * @param portWWN Indicates the HBA port to send command through 48*fcf3ce44SJohn Forte * @param targetPortWWN Indicates the target to send command to 49*fcf3ce44SJohn Forte * @param fcLun Indicates the target unit to send command to 50*fcf3ce44SJohn Forte * @param responseBuffer User-allocated response buffer 51*fcf3ce44SJohn Forte * @param responseSize Size of User-allocated response buffer 52*fcf3ce44SJohn Forte * @param scsiStatus User-allocated scsi status byte 53*fcf3ce44SJohn Forte * 54*fcf3ce44SJohn Forte * @doc This routine will attempt a limited number of retries 55*fcf3ce44SJohn Forte * When busy or again errors are encountered. 56*fcf3ce44SJohn Forte */ 57*fcf3ce44SJohn Forte HBA_STATUS 58*fcf3ce44SJohn Forte Sun_fcScsiReadCapacityV2(HBA_HANDLE handle, HBA_WWN portWWN, 59*fcf3ce44SJohn Forte HBA_WWN targetPortWWN, HBA_UINT64 fcLun, 60*fcf3ce44SJohn Forte void *responseBuffer, HBA_UINT32 *responseSize, 61*fcf3ce44SJohn Forte HBA_UINT8 *scsiStatus, 62*fcf3ce44SJohn Forte void *senseBuffer, HBA_UINT32 *senseSize) { 63*fcf3ce44SJohn Forte Trace log("Sun_fcScsiReadCapacityV2"); 64*fcf3ce44SJohn Forte 65*fcf3ce44SJohn Forte hrtime_t start = gethrtime(); 66*fcf3ce44SJohn Forte hrtime_t end = start + BUSY_RETRY_TIMER; 67*fcf3ce44SJohn Forte for (hrtime_t cur = start; cur < end; cur = gethrtime()) { 68*fcf3ce44SJohn Forte try { 69*fcf3ce44SJohn Forte Handle *myHandle = Handle::findHandle(handle); 70*fcf3ce44SJohn Forte HBA *hba = myHandle->getHBA(); 71*fcf3ce44SJohn Forte HBAPort *port = hba->getPort(wwnConversion(portWWN.wwn)); 72*fcf3ce44SJohn Forte port->sendReadCapacity(wwnConversion(targetPortWWN.wwn), 73*fcf3ce44SJohn Forte fcLun, responseBuffer, responseSize, scsiStatus, 74*fcf3ce44SJohn Forte senseBuffer, senseSize); 75*fcf3ce44SJohn Forte return (HBA_STATUS_OK); 76*fcf3ce44SJohn Forte } catch (BusyException &e) { 77*fcf3ce44SJohn Forte usleep(BUSY_SLEEP); 78*fcf3ce44SJohn Forte continue; 79*fcf3ce44SJohn Forte } catch (TryAgainException &e) { 80*fcf3ce44SJohn Forte usleep(BUSY_SLEEP); 81*fcf3ce44SJohn Forte continue; 82*fcf3ce44SJohn Forte } catch (HBAException &e) { 83*fcf3ce44SJohn Forte return (e.getErrorCode()); 84*fcf3ce44SJohn Forte } catch (...) { 85*fcf3ce44SJohn Forte log.internalError( 86*fcf3ce44SJohn Forte "Uncaught exception"); 87*fcf3ce44SJohn Forte return (HBA_STATUS_ERROR); 88*fcf3ce44SJohn Forte } 89*fcf3ce44SJohn Forte } 90*fcf3ce44SJohn Forte } 91*fcf3ce44SJohn Forte #ifdef __cplusplus 92*fcf3ce44SJohn Forte } 93*fcf3ce44SJohn Forte #endif 94