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 * Combine uscsi command ans send it out via ioctl 31 */ 32 static HBA_STATUS 33 SendScsiInquiry(const char *devpath, HBA_UINT8 cdb1, HBA_UINT8 cdb2, 34 void *responseBuffer, 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_INQUIRY; 47 cdb.g0_addr1 = cdb2; 48 cdb.g0_addr2 = cdb1; 49 cdb.g0_count0 = *responseSize; 50 51 ucmd_buf.uscsi_cdb = (char *)&cdb; 52 ucmd_buf.uscsi_cdblen = CDB_GROUP0; 53 ucmd_buf.uscsi_bufaddr = (caddr_t)responseBuffer; 54 ucmd_buf.uscsi_buflen = *responseSize; 55 ucmd_buf.uscsi_rqbuf = (caddr_t)senseBuffer; 56 ucmd_buf.uscsi_rqlen = *senseSize; 57 ucmd_buf.uscsi_flags = USCSI_READ | USCSI_SILENT | USCSI_RQENABLE; 58 59 status = send_uscsi_cmd(devpath, &ucmd_buf); 60 *scsiStatus = ucmd_buf.uscsi_status; 61 return (status); 62 } 63 64 65 /* 66 * Send a SCSI inquiry to a remote WWN 67 */ 68 HBA_STATUS 69 Sun_sasScsiInquiry(HBA_HANDLE handle, HBA_WWN portWWN, HBA_WWN targetPortWWN, 70 HBA_WWN domainPortWWN, SMHBA_SCSILUN smhbaLUN, HBA_UINT8 cdb1, 71 HBA_UINT8 cdb2, void *responseBuffer, HBA_UINT32 *responseSize, 72 HBA_UINT8 *scsiStatus, void *senseBuffer, HBA_UINT32 *senseSize) 73 { 74 const char ROUTINE[] = "Sun_sasScsiInquiry"; 75 HBA_STATUS status; 76 int index = 0; 77 int domainPortFound = 0; 78 int hbaPortFound = 0; 79 int chkDomainPort = 0; 80 struct sun_sas_hba *hba_ptr = NULL; 81 struct sun_sas_port *hba_port_ptr, *hba_disco_port; 82 struct ScsiEntryList *mapping_ptr; 83 hrtime_t start, end; 84 double duration; 85 HBA_SCSILUN hba_lun; 86 87 start = gethrtime(); 88 /* Validate the arguments */ 89 if (responseBuffer == NULL) { 90 log(LOG_DEBUG, ROUTINE, "NULL response buffer"); 91 return (HBA_STATUS_ERROR_ARG); 92 } 93 if (senseBuffer == NULL) { 94 log(LOG_DEBUG, ROUTINE, "NULL sense buffer"); 95 return (HBA_STATUS_ERROR_ARG); 96 } 97 if (responseSize == NULL) { 98 log(LOG_DEBUG, ROUTINE, "NULL response size"); 99 return (HBA_STATUS_ERROR_ARG); 100 } 101 if (senseSize == NULL) { 102 log(LOG_DEBUG, ROUTINE, "NULL sense size"); 103 return (HBA_STATUS_ERROR_ARG); 104 } 105 if (scsiStatus == NULL) { 106 log(LOG_DEBUG, ROUTINE, "NULL scsi status"); 107 return (HBA_STATUS_ERROR_ARG); 108 } 109 110 lock(&all_hbas_lock); 111 index = RetrieveIndex(handle); 112 lock(&open_handles_lock); 113 if ((hba_ptr = RetrieveHandle(index)) == NULL) { 114 log(LOG_DEBUG, ROUTINE, "Invalid handle %08lx", handle); 115 unlock(&open_handles_lock); 116 unlock(&all_hbas_lock); 117 return (HBA_STATUS_ERROR_INVALID_HANDLE); 118 } 119 120 /* Check for stale data */ 121 status = verifyAdapter(hba_ptr); 122 if (status != HBA_STATUS_OK) { 123 log(LOG_DEBUG, ROUTINE, "Verify adapter failed"); 124 unlock(&open_handles_lock); 125 unlock(&all_hbas_lock); 126 return (status); 127 } 128 129 /* 130 * We are not checking to see if our data is stale. 131 * By verifying this information here, we will take a big performance 132 * hit. This check will be done later only if the Inquiry ioctl fails 133 */ 134 if (hba_ptr->device_path == NULL) { 135 log(LOG_DEBUG, ROUTINE, 136 "HBA handle had NULL device path. \ 137 Unable to send SCSI cmd"); 138 unlock(&open_handles_lock); 139 unlock(&all_hbas_lock); 140 return (HBA_STATUS_ERROR); 141 } 142 143 if (wwnConversion(domainPortWWN.wwn)) 144 chkDomainPort = 1; 145 146 /* Determine which port to use */ 147 for (hba_port_ptr = hba_ptr->first_port; 148 hba_port_ptr != NULL; 149 hba_port_ptr = hba_port_ptr->next) { 150 151 if (hbaPortFound == 0) { 152 if (wwnConversion(hba_port_ptr->port_attributes. 153 PortSpecificAttribute.SASPort->LocalSASAddress.wwn) 154 != wwnConversion(portWWN.wwn)) { 155 /* 156 * Since all the ports under the same HBA have 157 * the same LocalSASAddress, we should break 158 * the loop once we find it dosn't match. 159 */ 160 break; 161 } else { 162 hbaPortFound = 1; 163 } 164 } 165 166 if (chkDomainPort) { 167 if (hba_port_ptr->first_phy != NULL && 168 wwnConversion(hba_port_ptr->first_phy-> 169 phy.domainPortWWN.wwn) == 170 wwnConversion(domainPortWWN.wwn)) { 171 domainPortFound = 1; 172 } 173 if (!(domainPortFound)) { 174 continue; 175 } 176 } 177 178 for (hba_disco_port = hba_port_ptr->first_attached_port; 179 hba_disco_port != NULL; 180 hba_disco_port = hba_disco_port->next) { 181 182 /* 183 * If discoveredPort is not given targetPort, just skip 184 */ 185 if (wwnConversion(hba_disco_port->port_attributes.\ 186 PortSpecificAttribute.SASPort->LocalSASAddress.wwn) 187 != wwnConversion(targetPortWWN.wwn)) { 188 /* Does not match */ 189 continue; 190 } 191 192 /* 193 * If discoveredPort is not a SAS/SATA port, it is not a 194 * target port 195 */ 196 if ((hba_disco_port->port_attributes.PortType != 197 HBA_PORTTYPE_SATADEVICE) && 198 (hba_disco_port->port_attributes.PortType != 199 HBA_PORTTYPE_SASDEVICE)) { 200 unlock(&open_handles_lock); 201 unlock(&all_hbas_lock); 202 log(LOG_DEBUG, ROUTINE, "Target Port WWN " 203 "%016llx on handle %08lx is not a Target", 204 wwnConversion(targetPortWWN.wwn), handle); 205 return (HBA_STATUS_ERROR_NOT_A_TARGET); 206 } 207 208 /* 209 * Iterating and matching is needed. 210 */ 211 for (mapping_ptr = hba_disco_port->scsiInfo; 212 mapping_ptr != NULL; 213 mapping_ptr = mapping_ptr->next) { 214 215 if (memcmp( 216 &mapping_ptr->entry.PortLun.TargetLun, 217 &smhbaLUN, sizeof (HBA_SCSILUN)) 218 != 0) { 219 continue; 220 } 221 222 status = SendScsiInquiry( 223 mapping_ptr->entry.ScsiId.OSDeviceName, 224 cdb1, cdb2, 225 responseBuffer, responseSize, 226 scsiStatus, senseBuffer, 227 senseSize); 228 229 unlock(&open_handles_lock); 230 unlock(&all_hbas_lock); 231 end = gethrtime(); 232 duration = end - start; 233 duration /= HR_SECOND; 234 log(LOG_DEBUG, ROUTINE, "Took total\ 235 of %.4f seconds", duration); 236 return (status); 237 } 238 unlock(&open_handles_lock); 239 unlock(&all_hbas_lock); 240 (void *) memcpy(&hba_lun, &smhbaLUN, 241 sizeof (HBA_SCSILUN)); 242 log(LOG_DEBUG, ROUTINE, "Unable to locate lun" 243 " %08lx for target %016llx on handle %08lx", 244 hba_lun, wwnConversion(targetPortWWN.wwn), handle); 245 return (HBA_STATUS_ERROR_INVALID_LUN); 246 } 247 if (chkDomainPort) { 248 unlock(&open_handles_lock); 249 unlock(&all_hbas_lock); 250 log(LOG_DEBUG, ROUTINE, "Unable to locate requested " 251 "Port WWN %016llx on handle %08lx", 252 wwnConversion(targetPortWWN.wwn), handle); 253 return (HBA_STATUS_ERROR_ILLEGAL_WWN); 254 } 255 } 256 257 unlock(&open_handles_lock); 258 unlock(&all_hbas_lock); 259 if (hbaPortFound == 0) { 260 log(LOG_DEBUG, ROUTINE, 261 "Unable to locate requested Port WWN %016llx on " 262 "handle %08lx", wwnConversion(portWWN.wwn), handle); 263 } else if (chkDomainPort && !domainPortFound) { 264 log(LOG_DEBUG, ROUTINE, "Unable to locate requested" 265 " domainPortWWN %016llx on handle %08lx", 266 wwnConversion(domainPortWWN.wwn), handle); 267 } else { 268 log(LOG_DEBUG, ROUTINE, "Unable to locate requested " 269 "Port WWN %016llx on handle %08lx", 270 wwnConversion(targetPortWWN.wwn), handle); 271 } 272 return (HBA_STATUS_ERROR_ILLEGAL_WWN); 273 } 274