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 * Pass request buffer into uscsi command and sent it out via ioctl 31 */ 32 static HBA_STATUS 33 SendScsiReadCapacity(const char *devpath, void *responseBuffer, 34 HBA_UINT32 *responseSize, HBA_UINT8 *scsiStatus, 35 void *senseBuffer, HBA_UINT32 *senseSize) 36 { 37 HBA_UINT32 status; 38 struct uscsi_cmd ucmd_buf; 39 union scsi_cdb cdb; 40 41 bzero(&cdb, sizeof (cdb)); 42 bzero(&ucmd_buf, sizeof (ucmd_buf)); 43 bzero(senseBuffer, *senseSize); 44 bzero(responseBuffer, *responseSize); 45 46 cdb.scc_cmd = SCMD_READ_CAPACITY; 47 48 ucmd_buf.uscsi_cdb = (char *)&cdb; 49 ucmd_buf.uscsi_cdblen = CDB_GROUP1; 50 ucmd_buf.uscsi_bufaddr = (caddr_t)responseBuffer; 51 ucmd_buf.uscsi_buflen = *responseSize; 52 ucmd_buf.uscsi_rqbuf = (caddr_t)senseBuffer; 53 ucmd_buf.uscsi_rqlen = *senseSize; 54 ucmd_buf.uscsi_flags = USCSI_READ | USCSI_SILENT | USCSI_RQENABLE; 55 ucmd_buf.uscsi_timeout = 60; 56 57 status = send_uscsi_cmd(devpath, &ucmd_buf); 58 *scsiStatus = ucmd_buf.uscsi_status; 59 return (status); 60 } 61 62 /* 63 * Send a read capacity to a remote WWN 64 */ 65 HBA_STATUS 66 Sun_sasScsiReadCapacity(HBA_HANDLE handle, HBA_WWN portWWN, 67 HBA_WWN targetPortWWN, HBA_WWN domainPortWWN, SMHBA_SCSILUN smhbaLUN, 68 void *responseBuffer, HBA_UINT32 *responseSize, 69 HBA_UINT8 *scsiStatus, void *senseBuffer, HBA_UINT32 *senseSize) 70 { 71 const char ROUTINE[] = "Sun_sasScsiReadCapacity"; 72 HBA_STATUS status; 73 int index = 0, domainPortFound = 0; 74 int hbaPortFound = 0; 75 int chkDomainPort = 0; 76 struct sun_sas_hba *hba_ptr = NULL; 77 struct sun_sas_port *hba_port_ptr, *hba_disco_port; 78 struct ScsiEntryList *mapping_ptr; 79 hrtime_t start, end; 80 double duration; 81 HBA_SCSILUN hba_lun; 82 83 start = gethrtime(); 84 /* Validate the arguments */ 85 if (responseBuffer == NULL) { 86 log(LOG_DEBUG, ROUTINE, "NULL response buffer"); 87 return (HBA_STATUS_ERROR_ARG); 88 } 89 if (senseBuffer == NULL) { 90 log(LOG_DEBUG, ROUTINE, "NULL sense buffer"); 91 return (HBA_STATUS_ERROR_ARG); 92 } 93 if (responseSize == NULL) { 94 log(LOG_DEBUG, ROUTINE, "NULL response size"); 95 return (HBA_STATUS_ERROR_ARG); 96 } 97 if (senseSize == NULL) { 98 log(LOG_DEBUG, ROUTINE, "NULL sense size"); 99 return (HBA_STATUS_ERROR_ARG); 100 } 101 if (scsiStatus == NULL) { 102 log(LOG_DEBUG, ROUTINE, "NULL scsi status"); 103 return (HBA_STATUS_ERROR_ARG); 104 } 105 106 lock(&all_hbas_lock); 107 index = RetrieveIndex(handle); 108 lock(&open_handles_lock); 109 if ((hba_ptr = RetrieveHandle(index)) == NULL) { 110 log(LOG_DEBUG, ROUTINE, "Invalid handle %08lx", handle); 111 unlock(&open_handles_lock); 112 unlock(&all_hbas_lock); 113 return (HBA_STATUS_ERROR_INVALID_HANDLE); 114 } 115 116 /* Check for stale data */ 117 status = verifyAdapter(hba_ptr); 118 if (status != HBA_STATUS_OK) { 119 log(LOG_DEBUG, ROUTINE, "Verify adapter failed"); 120 unlock(&open_handles_lock); 121 unlock(&all_hbas_lock); 122 return (status); 123 } 124 125 if (wwnConversion(domainPortWWN.wwn)) 126 chkDomainPort = 1; 127 128 /* 129 * We are not checking to see if our data is stale. 130 * By verifying this information here, we will take a big performance 131 * hit. This check will be done later only if the FCSM ioctl fails 132 */ 133 134 /* Determine which port to use */ 135 for (hba_port_ptr = hba_ptr->first_port; 136 hba_port_ptr != NULL; 137 hba_port_ptr = hba_port_ptr->next) { 138 139 if (hbaPortFound == 0) { 140 if (wwnConversion(hba_port_ptr->port_attributes. 141 PortSpecificAttribute.SASPort->LocalSASAddress.wwn) 142 != wwnConversion(portWWN.wwn)) { 143 /* 144 * Since all the ports under the same HBA have 145 * the same LocalSASAddress, we should break 146 * the loop once we find it dosn't match. 147 */ 148 break; 149 } else { 150 hbaPortFound = 1; 151 } 152 } 153 154 if (chkDomainPort != 0) { 155 if (hba_port_ptr->first_phy != NULL && 156 wwnConversion(hba_port_ptr->first_phy-> 157 phy.domainPortWWN.wwn) == 158 wwnConversion(domainPortWWN.wwn)) { 159 domainPortFound = 1; 160 } 161 if (!(domainPortFound)) { 162 continue; 163 } 164 } 165 166 for (hba_disco_port = hba_port_ptr->first_attached_port; 167 hba_disco_port != NULL; 168 hba_disco_port = hba_disco_port->next) { 169 170 /* 171 * If discoveredPort is not given targetPort, just skip 172 */ 173 if (wwnConversion(hba_disco_port->port_attributes.\ 174 PortSpecificAttribute.SASPort->LocalSASAddress.wwn) 175 != wwnConversion(targetPortWWN.wwn)) { 176 /* Does not match */ 177 continue; 178 } 179 180 /* 181 * If discoveredPort is not a SAS/SATA port, it is not a 182 * target port 183 */ 184 if ((hba_disco_port->port_attributes.PortType != 185 HBA_PORTTYPE_SATADEVICE) && 186 (hba_disco_port->port_attributes.PortType != 187 HBA_PORTTYPE_SASDEVICE)) { 188 unlock(&open_handles_lock); 189 unlock(&all_hbas_lock); 190 log(LOG_DEBUG, ROUTINE, "Target Port WWN " 191 "%016llx on handle %08lx is not a Target", 192 wwnConversion(targetPortWWN.wwn), handle); 193 return (HBA_STATUS_ERROR_NOT_A_TARGET); 194 } 195 196 /* 197 * Iterating and matching is needed. 198 */ 199 for (mapping_ptr = hba_disco_port->scsiInfo; 200 mapping_ptr != NULL; 201 mapping_ptr = mapping_ptr->next) { 202 203 if (memcmp( 204 &mapping_ptr->entry.PortLun.TargetLun, 205 &smhbaLUN, sizeof (HBA_SCSILUN)) 206 != 0) { 207 continue; 208 } 209 210 status = SendScsiReadCapacity( 211 mapping_ptr->entry.ScsiId.\ 212 OSDeviceName, 213 responseBuffer, responseSize, 214 scsiStatus, senseBuffer, senseSize); 215 216 unlock(&open_handles_lock); 217 unlock(&all_hbas_lock); 218 end = gethrtime(); 219 duration = end - start; 220 duration /= HR_SECOND; 221 log(LOG_DEBUG, ROUTINE, "Took total\ 222 of %.4f seconds", duration); 223 return (status); 224 } 225 unlock(&open_handles_lock); 226 unlock(&all_hbas_lock); 227 (void *) memcpy(&hba_lun, &smhbaLUN, 228 sizeof (HBA_SCSILUN)); 229 log(LOG_DEBUG, ROUTINE, "Unable to locate lun" 230 " %08lx for target %016llx on handle %08lx", 231 hba_lun, wwnConversion(targetPortWWN.wwn), handle); 232 return (HBA_STATUS_ERROR_INVALID_LUN); 233 } 234 235 if (chkDomainPort) { 236 unlock(&open_handles_lock); 237 unlock(&all_hbas_lock); 238 log(LOG_DEBUG, ROUTINE, "Unable to locate requested " 239 "Port WWN %016llx on handle %08lx", 240 wwnConversion(targetPortWWN.wwn), handle); 241 return (HBA_STATUS_ERROR_ILLEGAL_WWN); 242 } 243 } 244 245 unlock(&open_handles_lock); 246 unlock(&all_hbas_lock); 247 if (hbaPortFound == 0) { 248 log(LOG_DEBUG, ROUTINE, 249 "Unable to locate requested Port WWN %016llx on " 250 "handle %08lx", wwnConversion(portWWN.wwn), handle); 251 } else if (chkDomainPort && !domainPortFound) { 252 log(LOG_DEBUG, ROUTINE, "Unable to locate requested" 253 " domainPortWWN %016llx on handle %08lx", 254 wwnConversion(domainPortWWN.wwn), handle); 255 } else { 256 log(LOG_DEBUG, ROUTINE, "Unable to locate requested " 257 "Port WWN %016llx on handle %08lx", 258 wwnConversion(targetPortWWN.wwn), handle); 259 } 260 return (HBA_STATUS_ERROR_ILLEGAL_WWN); 261 } 262