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 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <sun_sas.h> 28 29 /* 30 * Retrieves the mapping between targets and OS SCSI information 31 */ 32 HBA_STATUS 33 Sun_sasGetTargetMapping(HBA_HANDLE handle, HBA_WWN hbaPortWWN, 34 HBA_WWN domainPortWWN, SMHBA_TARGETMAPPING *mapping) 35 { 36 const char ROUTINE[] = "Sun_sasGetTargetMapping"; 37 int i, index; 38 int hbaPortFound = 0; 39 int domainPortFound = 0; 40 uint_t total_entries = 0; 41 struct sun_sas_hba *hba_ptr; 42 struct sun_sas_port *hba_port_ptr, *hba_disco_port; 43 struct ScsiEntryList *mapping_ptr; 44 45 if (mapping == NULL) { 46 log(LOG_DEBUG, ROUTINE, "NULL mapping buffer"); 47 return (HBA_STATUS_ERROR_ARG); 48 } 49 50 lock(&all_hbas_lock); 51 index = RetrieveIndex(handle); 52 lock(&open_handles_lock); 53 hba_ptr = RetrieveHandle(index); 54 if (hba_ptr == NULL) { 55 log(LOG_DEBUG, ROUTINE, "Invalid handle %08lx.", handle); 56 /* on error, need to set NumberOfEntries to 0 */ 57 mapping->NumberOfEntries = 0; 58 unlock(&open_handles_lock); 59 unlock(&all_hbas_lock); 60 return (HBA_STATUS_ERROR_INVALID_HANDLE); 61 } 62 63 /* 64 * We should indicate an error if no domainPortWWN passed in. 65 */ 66 if (wwnConversion(domainPortWWN.wwn) == 0) { 67 log(LOG_DEBUG, ROUTINE, "domainPortWWN must be provided"); 68 mapping->NumberOfEntries = 0; 69 unlock(&open_handles_lock); 70 unlock(&all_hbas_lock); 71 return (HBA_STATUS_ERROR_ARG); 72 } 73 /* 74 * walk through the list of ports for this hba and count up the number 75 * of discovered ports on each hba port 76 */ 77 i = 0; 78 for (hba_port_ptr = hba_ptr->first_port; hba_port_ptr != NULL; 79 hba_port_ptr = hba_port_ptr->next) { 80 if (hbaPortFound == 0) { 81 if (wwnConversion(hba_port_ptr->port_attributes. 82 PortSpecificAttribute.SASPort->LocalSASAddress.wwn) 83 != wwnConversion(hbaPortWWN.wwn)) { 84 /* 85 * Since all the ports under the same HBA have 86 * the same LocalSASAddress, we should break 87 * the loop once we find it dosn't match. 88 */ 89 break; 90 } 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