Sun_sasGetTargetMapping.c revision 10652:9d0aff74d6fd
1234285Sdim/* 2234285Sdim * CDDL HEADER START 3234285Sdim * 4234285Sdim * The contents of this file are subject to the terms of the 5234285Sdim * Common Development and Distribution License (the "License"). 6234285Sdim * You may not use this file except in compliance with the License. 7234285Sdim * 8234285Sdim * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9234285Sdim * or http://www.opensolaris.org/os/licensing. 10234285Sdim * See the License for the specific language governing permissions 11234285Sdim * and limitations under the License. 12234285Sdim * 13234285Sdim * When distributing Covered Code, include this CDDL HEADER in each 14234285Sdim * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15234285Sdim * If applicable, add the following below this CDDL HEADER, with the 16239462Sdim * fields enclosed by brackets "[]" replaced with your own identifying 17234285Sdim * information: Portions Copyright [yyyy] [name of copyright owner] 18234285Sdim * 19234285Sdim * CDDL HEADER END 20234285Sdim */ 21234285Sdim 22234285Sdim/* 23234285Sdim * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24234285Sdim * Use is subject to license terms. 25234285Sdim */ 26234285Sdim 27234285Sdim#include <sun_sas.h> 28234285Sdim 29234285Sdim/* 30234285Sdim * Retrieves the mapping between targets and OS SCSI information 31234285Sdim */ 32249423SdimHBA_STATUS 33249423SdimSun_sasGetTargetMapping(HBA_HANDLE handle, HBA_WWN hbaPortWWN, 34249423Sdim HBA_WWN domainPortWWN, SMHBA_TARGETMAPPING *mapping) 35234285Sdim{ 36239462Sdim const char ROUTINE[] = "Sun_sasGetTargetMapping"; 37249423Sdim int i, index; 38249423Sdim int hbaPortFound = 0; 39249423Sdim int domainPortFound = 0; 40249423Sdim uint_t total_entries = 0; 41249423Sdim struct sun_sas_hba *hba_ptr; 42249423Sdim struct sun_sas_port *hba_port_ptr, *hba_disco_port; 43249423Sdim struct ScsiEntryList *mapping_ptr; 44239462Sdim 45239462Sdim if (mapping == NULL) { 46239462Sdim log(LOG_DEBUG, ROUTINE, "NULL mapping buffer"); 47239462Sdim return (HBA_STATUS_ERROR_ARG); 48239462Sdim } 49234285Sdim 50234285Sdim lock(&all_hbas_lock); 51234285Sdim index = RetrieveIndex(handle); 52234285Sdim lock(&open_handles_lock); 53243830Sdim hba_ptr = RetrieveHandle(index); 54243830Sdim if (hba_ptr == NULL) { 55243830Sdim log(LOG_DEBUG, ROUTINE, "Invalid handle %08lx.", handle); 56243830Sdim /* on error, need to set NumberOfEntries to 0 */ 57243830Sdim mapping->NumberOfEntries = 0; 58243830Sdim unlock(&open_handles_lock); 59243830Sdim unlock(&all_hbas_lock); 60234285Sdim return (HBA_STATUS_ERROR_INVALID_HANDLE); 61243830Sdim } 62243830Sdim 63243830Sdim /* 64243830Sdim * We should indicate an error if no domainPortWWN passed in. 65243830Sdim */ 66243830Sdim if (wwnConversion(domainPortWWN.wwn) == 0) { 67243830Sdim log(LOG_DEBUG, ROUTINE, "domainPortWWN must be provided"); 68234285Sdim mapping->NumberOfEntries = 0; 69234285Sdim unlock(&open_handles_lock); 70243830Sdim unlock(&all_hbas_lock); 71243830Sdim return (HBA_STATUS_ERROR_ARG); 72234285Sdim } 73234285Sdim /* 74234285Sdim * walk through the list of ports for this hba and count up the number 75249423Sdim * of discovered ports on each hba port 76249423Sdim */ 77249423Sdim i = 0; 78249423Sdim for (hba_port_ptr = hba_ptr->first_port; hba_port_ptr != NULL; 79234285Sdim hba_port_ptr = hba_port_ptr->next) { 80234285Sdim if (hbaPortFound == 0) { 81234285Sdim if (wwnConversion(hba_port_ptr->port_attributes. 82239462Sdim PortSpecificAttribute.SASPort->LocalSASAddress.wwn) 83239462Sdim != wwnConversion(hbaPortWWN.wwn)) { 84239462Sdim /* 85239462Sdim * Since all the ports under the same HBA have 86239462Sdim * the same LocalSASAddress, we should break 87234285Sdim * the loop once we find it dosn't match. 88239462Sdim */ 89263508Sdim break; 90263508Sdim } else { 91 hbaPortFound = 1; 92 } 93 } 94 95 /* 96 * Check whether the domainPortWWN matches. 97 */ 98 if ((validateDomainAddress(hba_port_ptr, domainPortWWN)) 99 != HBA_STATUS_OK) { 100 continue; 101 } 102 domainPortFound = 1; 103 104 for (hba_disco_port = hba_port_ptr->first_attached_port; 105 hba_disco_port != NULL; 106 hba_disco_port = hba_disco_port->next) { 107 for (mapping_ptr = hba_disco_port->scsiInfo; 108 mapping_ptr != NULL; 109 mapping_ptr = mapping_ptr->next) { 110 /* 111 * Add the information as much as mapping 112 * can hold. 113 */ 114 if (wwnConversion(domainPortWWN.wwn) != 115 wwnConversion(mapping_ptr->entry. 116 PortLun.domainPortWWN.wwn)) { 117 continue; 118 } 119 120 if (total_entries < mapping->NumberOfEntries) { 121 (void) memcpy(&mapping->entry[i].ScsiId, 122 &mapping_ptr->entry.ScsiId, 123 sizeof (SMHBA_SCSIID)); 124 (void) memcpy(&mapping->entry[i]. 125 PortLun, &mapping_ptr->entry. 126 PortLun, sizeof (SMHBA_PORTLUN)); 127 (void) memcpy(&mapping->entry[i].LUID, 128 &mapping_ptr->entry.LUID, 129 sizeof (SMHBA_LUID)); 130 i++; 131 } 132 total_entries++; 133 } 134 } 135 } 136 137 /* 138 * check to make sure user has passed in an acceptable PortWWN for 139 * the given handle 140 */ 141 if (hbaPortFound == 0) { 142 log(LOG_DEBUG, ROUTINE, "Unable to locate requested " 143 "HBA Port WWN %016llx on handle %08lx", 144 wwnConversion(hbaPortWWN.wwn), handle); 145 unlock(&open_handles_lock); 146 unlock(&all_hbas_lock); 147 return (HBA_STATUS_ERROR_ILLEGAL_WWN); 148 } 149 150 if (domainPortFound == 0) { 151 log(LOG_DEBUG, ROUTINE, "No matching domain " 152 "port %016llx for port %016llx on handle " 153 "%08lx", wwnConversion(domainPortWWN.wwn), 154 wwnConversion(hbaPortWWN.wwn), handle); 155 unlock(&open_handles_lock); 156 unlock(&all_hbas_lock); 157 return (HBA_STATUS_ERROR_ILLEGAL_WWN); 158 } 159 160 if (total_entries > mapping->NumberOfEntries) { 161 log(LOG_DEBUG, ROUTINE, 162 "total entries: %d: mapping->NumberofEntries: %d.", 163 total_entries, mapping->NumberOfEntries); 164 mapping->NumberOfEntries = total_entries; 165 unlock(&open_handles_lock); 166 unlock(&all_hbas_lock); 167 return (HBA_STATUS_ERROR_MORE_DATA); 168 } 169 170 mapping->NumberOfEntries = total_entries; 171 172 /* convert devpath to dev link */ 173 convertDevpathToDevlink(mapping); 174 175 unlock(&open_handles_lock); 176 unlock(&all_hbas_lock); 177 178 return (HBA_STATUS_OK); 179} 180