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
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)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