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 "Trace.h" 29 #include "Handle.h" 30 #include "HBA.h" 31 #include "HBAPort.h" 32 #include "Exceptions.h" 33 #include "sun_fc.h" 34 #include <unistd.h> 35 36 #define BUSY_SLEEP 1000000 /* 1/100 second */ 37 #define BUSY_RETRY_TIMER 5000000000ULL /* Retry for 5 seconds */ 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 /** 43 * @memo Send a SCSI inquiry to a remote WWN 44 * @return HBA_STATUS_OK or other error code 45 * scsiStatus should be checked to ensure SCSI command 46 * was a success. 47 * @param handle The HBA to operate on 48 * @param portWWN Indicates the HBA port to send command through 49 * @param targetPortWWN Indicates the target to send command to 50 * @param fcLun Indicates the target unit to send command to 51 * @param cdb1 The first CDB byte 52 * @param cdb2 The second CDB byte 53 * @param responseBuffer User-allocated response buffer 54 * @param responseSize Size of User-allocated response buffer 55 * @param scsiStatus User-allocated scsi status byte 56 * 57 * @doc This routine will attempt a limited number of retries 58 * When busy or again errors are encountered. 59 */ 60 HBA_STATUS 61 Sun_fcScsiInquiryV2(HBA_HANDLE handle, HBA_WWN portWWN, HBA_WWN targetPortWWN, 62 HBA_UINT64 fcLun, HBA_UINT8 cdb1, HBA_UINT8 cdb2, 63 void *responseBuffer, HBA_UINT32 *responseSize, 64 HBA_UINT8 *scsiStatus, 65 void *senseBuffer, HBA_UINT32 *senseSize) { 66 Trace log("Sun_fcScsiInquiryV2"); 67 68 hrtime_t start = gethrtime(); 69 hrtime_t end = start + BUSY_RETRY_TIMER; 70 for (hrtime_t cur = start; cur < end; cur = gethrtime()) { 71 try { 72 Handle *myHandle = Handle::findHandle(handle); 73 HBA *hba = myHandle->getHBA(); 74 HBAPort *port = hba->getPort(wwnConversion(portWWN.wwn)); 75 76 port->sendScsiInquiry(wwnConversion(targetPortWWN.wwn), fcLun, 77 cdb1, cdb2, responseBuffer, responseSize, 78 scsiStatus, senseBuffer, senseSize); 79 return (HBA_STATUS_OK); 80 } catch (BusyException &e) { 81 usleep(BUSY_SLEEP); 82 continue; 83 } catch (TryAgainException &e) { 84 usleep(BUSY_SLEEP); 85 continue; 86 } catch (HBAException &e) { 87 return (e.getErrorCode()); 88 } catch (...) { 89 log.internalError( 90 "Uncaught exception"); 91 return (HBA_STATUS_ERROR); 92 } 93 } 94 } 95 #ifdef __cplusplus 96 } 97 #endif 98