1*9e86db79SHyon Kim /*
2*9e86db79SHyon Kim  * CDDL HEADER START
3*9e86db79SHyon Kim  *
4*9e86db79SHyon Kim  * The contents of this file are subject to the terms of the
5*9e86db79SHyon Kim  * Common Development and Distribution License (the "License").
6*9e86db79SHyon Kim  * You may not use this file except in compliance with the License.
7*9e86db79SHyon Kim  *
8*9e86db79SHyon Kim  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*9e86db79SHyon Kim  * or http://www.opensolaris.org/os/licensing.
10*9e86db79SHyon Kim  * See the License for the specific language governing permissions
11*9e86db79SHyon Kim  * and limitations under the License.
12*9e86db79SHyon Kim  *
13*9e86db79SHyon Kim  * When distributing Covered Code, include this CDDL HEADER in each
14*9e86db79SHyon Kim  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*9e86db79SHyon Kim  * If applicable, add the following below this CDDL HEADER, with the
16*9e86db79SHyon Kim  * fields enclosed by brackets "[]" replaced with your own identifying
17*9e86db79SHyon Kim  * information: Portions Copyright [yyyy] [name of copyright owner]
18*9e86db79SHyon Kim  *
19*9e86db79SHyon Kim  * CDDL HEADER END
20*9e86db79SHyon Kim  */
21*9e86db79SHyon Kim 
22*9e86db79SHyon Kim /*
23*9e86db79SHyon Kim  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24*9e86db79SHyon Kim  * Use is subject to license terms.
25*9e86db79SHyon Kim  */
26*9e86db79SHyon Kim 
27*9e86db79SHyon Kim #include <sun_sas.h>
28*9e86db79SHyon Kim 
29*9e86db79SHyon Kim /*
30*9e86db79SHyon Kim  * Pass request buffer into uscsi command and sent it out via ioctl
31*9e86db79SHyon Kim  */
32*9e86db79SHyon Kim static HBA_STATUS
SendScsiReadCapacity(const char * devpath,void * responseBuffer,HBA_UINT32 * responseSize,HBA_UINT8 * scsiStatus,void * senseBuffer,HBA_UINT32 * senseSize)33*9e86db79SHyon Kim SendScsiReadCapacity(const char *devpath, void *responseBuffer,
34*9e86db79SHyon Kim     HBA_UINT32 *responseSize, HBA_UINT8 *scsiStatus,
35*9e86db79SHyon Kim     void *senseBuffer, HBA_UINT32 *senseSize)
36*9e86db79SHyon Kim {
37*9e86db79SHyon Kim 	HBA_UINT32		status;
38*9e86db79SHyon Kim 	struct uscsi_cmd	ucmd_buf;
39*9e86db79SHyon Kim 	union scsi_cdb		cdb;
40*9e86db79SHyon Kim 
41*9e86db79SHyon Kim 	bzero(&cdb, sizeof (cdb));
42*9e86db79SHyon Kim 	bzero(&ucmd_buf, sizeof (ucmd_buf));
43*9e86db79SHyon Kim 	bzero(senseBuffer, *senseSize);
44*9e86db79SHyon Kim 	bzero(responseBuffer, *responseSize);
45*9e86db79SHyon Kim 
46*9e86db79SHyon Kim 	cdb.scc_cmd = SCMD_READ_CAPACITY;
47*9e86db79SHyon Kim 
48*9e86db79SHyon Kim 	ucmd_buf.uscsi_cdb = (char *)&cdb;
49*9e86db79SHyon Kim 	ucmd_buf.uscsi_cdblen = CDB_GROUP1;
50*9e86db79SHyon Kim 	ucmd_buf.uscsi_bufaddr = (caddr_t)responseBuffer;
51*9e86db79SHyon Kim 	ucmd_buf.uscsi_buflen = *responseSize;
52*9e86db79SHyon Kim 	ucmd_buf.uscsi_rqbuf = (caddr_t)senseBuffer;
53*9e86db79SHyon Kim 	ucmd_buf.uscsi_rqlen = *senseSize;
54*9e86db79SHyon Kim 	ucmd_buf.uscsi_flags = USCSI_READ | USCSI_SILENT | USCSI_RQENABLE;
55*9e86db79SHyon Kim 	ucmd_buf.uscsi_timeout = 60;
56*9e86db79SHyon Kim 
57*9e86db79SHyon Kim 	status = send_uscsi_cmd(devpath, &ucmd_buf);
58*9e86db79SHyon Kim 	*scsiStatus = ucmd_buf.uscsi_status;
59*9e86db79SHyon Kim 	return (status);
60*9e86db79SHyon Kim }
61*9e86db79SHyon Kim 
62*9e86db79SHyon Kim /*
63*9e86db79SHyon Kim  * Send a read capacity to a remote WWN
64*9e86db79SHyon Kim  */
65*9e86db79SHyon Kim HBA_STATUS
Sun_sasScsiReadCapacity(HBA_HANDLE handle,HBA_WWN portWWN,HBA_WWN targetPortWWN,HBA_WWN domainPortWWN,SMHBA_SCSILUN smhbaLUN,void * responseBuffer,HBA_UINT32 * responseSize,HBA_UINT8 * scsiStatus,void * senseBuffer,HBA_UINT32 * senseSize)66*9e86db79SHyon Kim Sun_sasScsiReadCapacity(HBA_HANDLE handle, HBA_WWN portWWN,
67*9e86db79SHyon Kim     HBA_WWN targetPortWWN, HBA_WWN domainPortWWN, SMHBA_SCSILUN smhbaLUN,
68*9e86db79SHyon Kim     void *responseBuffer, HBA_UINT32 *responseSize,
69*9e86db79SHyon Kim     HBA_UINT8 *scsiStatus, void *senseBuffer, HBA_UINT32 *senseSize)
70*9e86db79SHyon Kim {
71*9e86db79SHyon Kim 	const char		ROUTINE[] = "Sun_sasScsiReadCapacity";
72*9e86db79SHyon Kim 	HBA_STATUS		status;
73*9e86db79SHyon Kim 	int			index = 0, domainPortFound = 0;
74*9e86db79SHyon Kim 	int			hbaPortFound = 0;
75*9e86db79SHyon Kim 	int			chkDomainPort = 0;
76*9e86db79SHyon Kim 	struct sun_sas_hba	*hba_ptr = NULL;
77*9e86db79SHyon Kim 	struct sun_sas_port	*hba_port_ptr, *hba_disco_port;
78*9e86db79SHyon Kim 	struct ScsiEntryList	*mapping_ptr;
79*9e86db79SHyon Kim 	hrtime_t		start, end;
80*9e86db79SHyon Kim 	double			duration;
81*9e86db79SHyon Kim 	HBA_SCSILUN		hba_lun;
82*9e86db79SHyon Kim 
83*9e86db79SHyon Kim 	start = gethrtime();
84*9e86db79SHyon Kim 	/* Validate the arguments */
85*9e86db79SHyon Kim 	if (responseBuffer == NULL) {
86*9e86db79SHyon Kim 		log(LOG_DEBUG, ROUTINE, "NULL response buffer");
87*9e86db79SHyon Kim 		return (HBA_STATUS_ERROR_ARG);
88*9e86db79SHyon Kim 	}
89*9e86db79SHyon Kim 	if (senseBuffer == NULL) {
90*9e86db79SHyon Kim 		log(LOG_DEBUG, ROUTINE, "NULL sense buffer");
91*9e86db79SHyon Kim 		return (HBA_STATUS_ERROR_ARG);
92*9e86db79SHyon Kim 	}
93*9e86db79SHyon Kim 	if (responseSize == NULL) {
94*9e86db79SHyon Kim 		log(LOG_DEBUG, ROUTINE, "NULL response size");
95*9e86db79SHyon Kim 		return (HBA_STATUS_ERROR_ARG);
96*9e86db79SHyon Kim 	}
97*9e86db79SHyon Kim 	if (senseSize == NULL) {
98*9e86db79SHyon Kim 		log(LOG_DEBUG, ROUTINE, "NULL sense size");
99*9e86db79SHyon Kim 		return (HBA_STATUS_ERROR_ARG);
100*9e86db79SHyon Kim 	}
101*9e86db79SHyon Kim 	if (scsiStatus == NULL) {
102*9e86db79SHyon Kim 		log(LOG_DEBUG, ROUTINE, "NULL scsi status");
103*9e86db79SHyon Kim 		return (HBA_STATUS_ERROR_ARG);
104*9e86db79SHyon Kim 	}
105*9e86db79SHyon Kim 
106*9e86db79SHyon Kim 	lock(&all_hbas_lock);
107*9e86db79SHyon Kim 	index = RetrieveIndex(handle);
108*9e86db79SHyon Kim 	lock(&open_handles_lock);
109*9e86db79SHyon Kim 	if ((hba_ptr = RetrieveHandle(index)) == NULL) {
110*9e86db79SHyon Kim 		log(LOG_DEBUG, ROUTINE, "Invalid handle %08lx", handle);
111*9e86db79SHyon Kim 		unlock(&open_handles_lock);
112*9e86db79SHyon Kim 		unlock(&all_hbas_lock);
113*9e86db79SHyon Kim 		return (HBA_STATUS_ERROR_INVALID_HANDLE);
114*9e86db79SHyon Kim 	}
115*9e86db79SHyon Kim 
116*9e86db79SHyon Kim 	/* Check for stale data */
117*9e86db79SHyon Kim 	status = verifyAdapter(hba_ptr);
118*9e86db79SHyon Kim 	if (status != HBA_STATUS_OK) {
119*9e86db79SHyon Kim 		log(LOG_DEBUG, ROUTINE, "Verify adapter failed");
120*9e86db79SHyon Kim 		unlock(&open_handles_lock);
121*9e86db79SHyon Kim 		unlock(&all_hbas_lock);
122*9e86db79SHyon Kim 		return (status);
123*9e86db79SHyon Kim 	}
124*9e86db79SHyon Kim 
125*9e86db79SHyon Kim 	if (wwnConversion(domainPortWWN.wwn))
126*9e86db79SHyon Kim 		chkDomainPort = 1;
127*9e86db79SHyon Kim 
128*9e86db79SHyon Kim 	/*
129*9e86db79SHyon Kim 	 * We are not checking to see if our data is stale.
130*9e86db79SHyon Kim 	 * By verifying this information here, we will take a big performance
131*9e86db79SHyon Kim 	 * hit.  This check will be done later only if the FCSM ioctl fails
132*9e86db79SHyon Kim 	 */
133*9e86db79SHyon Kim 
134*9e86db79SHyon Kim 	/* Determine which port to use */
135*9e86db79SHyon Kim 	for (hba_port_ptr = hba_ptr->first_port;
136*9e86db79SHyon Kim 	    hba_port_ptr != NULL;
137*9e86db79SHyon Kim 	    hba_port_ptr = hba_port_ptr->next) {
138*9e86db79SHyon Kim 
139*9e86db79SHyon Kim 		if (hbaPortFound == 0) {
140*9e86db79SHyon Kim 			if (wwnConversion(hba_port_ptr->port_attributes.
141*9e86db79SHyon Kim 			    PortSpecificAttribute.SASPort->LocalSASAddress.wwn)
142*9e86db79SHyon Kim 			    != wwnConversion(portWWN.wwn)) {
143*9e86db79SHyon Kim 				/*
144*9e86db79SHyon Kim 				 * Since all the ports under the same HBA have
145*9e86db79SHyon Kim 				 * the same LocalSASAddress, we should break
146*9e86db79SHyon Kim 				 * the loop once we find it dosn't match.
147*9e86db79SHyon Kim 				 */
148*9e86db79SHyon Kim 				break;
149*9e86db79SHyon Kim 			} else {
150*9e86db79SHyon Kim 				hbaPortFound = 1;
151*9e86db79SHyon Kim 			}
152*9e86db79SHyon Kim 		}
153*9e86db79SHyon Kim 
154*9e86db79SHyon Kim 		if (chkDomainPort != 0) {
155*9e86db79SHyon Kim 			if (hba_port_ptr->first_phy != NULL &&
156*9e86db79SHyon Kim 			    wwnConversion(hba_port_ptr->first_phy->
157*9e86db79SHyon Kim 			    phy.domainPortWWN.wwn) ==
158*9e86db79SHyon Kim 			    wwnConversion(domainPortWWN.wwn)) {
159*9e86db79SHyon Kim 				domainPortFound = 1;
160*9e86db79SHyon Kim 			}
161*9e86db79SHyon Kim 			if (!(domainPortFound)) {
162*9e86db79SHyon Kim 				continue;
163*9e86db79SHyon Kim 			}
164*9e86db79SHyon Kim 		}
165*9e86db79SHyon Kim 
166*9e86db79SHyon Kim 		for (hba_disco_port = hba_port_ptr->first_attached_port;
167*9e86db79SHyon Kim 		    hba_disco_port != NULL;
168*9e86db79SHyon Kim 		    hba_disco_port = hba_disco_port->next) {
169*9e86db79SHyon Kim 
170*9e86db79SHyon Kim 			/*
171*9e86db79SHyon Kim 			 * If discoveredPort is not given targetPort, just skip
172*9e86db79SHyon Kim 			 */
173*9e86db79SHyon Kim 			if (wwnConversion(hba_disco_port->port_attributes.\
174*9e86db79SHyon Kim 			    PortSpecificAttribute.SASPort->LocalSASAddress.wwn)
175*9e86db79SHyon Kim 			    != wwnConversion(targetPortWWN.wwn)) {
176*9e86db79SHyon Kim 				/* Does not match */
177*9e86db79SHyon Kim 				continue;
178*9e86db79SHyon Kim 			}
179*9e86db79SHyon Kim 
180*9e86db79SHyon Kim 			/*
181*9e86db79SHyon Kim 			 * If discoveredPort is not a SAS/SATA port, it is not a
182*9e86db79SHyon Kim 			 * target port
183*9e86db79SHyon Kim 			 */
184*9e86db79SHyon Kim 			if ((hba_disco_port->port_attributes.PortType !=
185*9e86db79SHyon Kim 			    HBA_PORTTYPE_SATADEVICE) &&
186*9e86db79SHyon Kim 			    (hba_disco_port->port_attributes.PortType !=
187*9e86db79SHyon Kim 			    HBA_PORTTYPE_SASDEVICE)) {
188*9e86db79SHyon Kim 				unlock(&open_handles_lock);
189*9e86db79SHyon Kim 				unlock(&all_hbas_lock);
190*9e86db79SHyon Kim 				log(LOG_DEBUG, ROUTINE, "Target Port WWN "
191*9e86db79SHyon Kim 				    "%016llx on handle %08lx is not a Target",
192*9e86db79SHyon Kim 				    wwnConversion(targetPortWWN.wwn), handle);
193*9e86db79SHyon Kim 				return (HBA_STATUS_ERROR_NOT_A_TARGET);
194*9e86db79SHyon Kim 			}
195*9e86db79SHyon Kim 
196*9e86db79SHyon Kim 			/*
197*9e86db79SHyon Kim 			 * Iterating and matching is needed.
198*9e86db79SHyon Kim 			 */
199*9e86db79SHyon Kim 			for (mapping_ptr = hba_disco_port->scsiInfo;
200*9e86db79SHyon Kim 			    mapping_ptr != NULL;
201*9e86db79SHyon Kim 			    mapping_ptr = mapping_ptr->next) {
202*9e86db79SHyon Kim 
203*9e86db79SHyon Kim 				if (memcmp(
204*9e86db79SHyon Kim 				    &mapping_ptr->entry.PortLun.TargetLun,
205*9e86db79SHyon Kim 				    &smhbaLUN, sizeof (HBA_SCSILUN))
206*9e86db79SHyon Kim 				    != 0) {
207*9e86db79SHyon Kim 					continue;
208*9e86db79SHyon Kim 				}
209*9e86db79SHyon Kim 
210*9e86db79SHyon Kim 				status = SendScsiReadCapacity(
211*9e86db79SHyon Kim 				    mapping_ptr->entry.ScsiId.\
212*9e86db79SHyon Kim 				    OSDeviceName,
213*9e86db79SHyon Kim 				    responseBuffer, responseSize,
214*9e86db79SHyon Kim 				    scsiStatus, senseBuffer, senseSize);
215*9e86db79SHyon Kim 
216*9e86db79SHyon Kim 				unlock(&open_handles_lock);
217*9e86db79SHyon Kim 				unlock(&all_hbas_lock);
218*9e86db79SHyon Kim 				end = gethrtime();
219*9e86db79SHyon Kim 				duration = end - start;
220*9e86db79SHyon Kim 				duration /= HR_SECOND;
221*9e86db79SHyon Kim 				log(LOG_DEBUG, ROUTINE, "Took total\
222*9e86db79SHyon Kim 				    of %.4f seconds", duration);
223*9e86db79SHyon Kim 				return (status);
224*9e86db79SHyon Kim 			}
225*9e86db79SHyon Kim 			unlock(&open_handles_lock);
226*9e86db79SHyon Kim 			unlock(&all_hbas_lock);
227*9e86db79SHyon Kim 			(void *) memcpy(&hba_lun, &smhbaLUN,
228*9e86db79SHyon Kim 			    sizeof (HBA_SCSILUN));
229*9e86db79SHyon Kim 			log(LOG_DEBUG, ROUTINE, "Unable to locate lun"
230*9e86db79SHyon Kim 			    " %08lx for target %016llx on handle %08lx",
231*9e86db79SHyon Kim 			    hba_lun, wwnConversion(targetPortWWN.wwn), handle);
232*9e86db79SHyon Kim 			return (HBA_STATUS_ERROR_INVALID_LUN);
233*9e86db79SHyon Kim 		}
234*9e86db79SHyon Kim 
235*9e86db79SHyon Kim 		if (chkDomainPort) {
236*9e86db79SHyon Kim 			unlock(&open_handles_lock);
237*9e86db79SHyon Kim 			unlock(&all_hbas_lock);
238*9e86db79SHyon Kim 			log(LOG_DEBUG, ROUTINE, "Unable to locate requested "
239*9e86db79SHyon Kim 			    "Port WWN %016llx on handle %08lx",
240*9e86db79SHyon Kim 			    wwnConversion(targetPortWWN.wwn), handle);
241*9e86db79SHyon Kim 			return (HBA_STATUS_ERROR_ILLEGAL_WWN);
242*9e86db79SHyon Kim 		}
243*9e86db79SHyon Kim 	}
244*9e86db79SHyon Kim 
245*9e86db79SHyon Kim 	unlock(&open_handles_lock);
246*9e86db79SHyon Kim 	unlock(&all_hbas_lock);
247*9e86db79SHyon Kim 	if (hbaPortFound == 0) {
248*9e86db79SHyon Kim 		log(LOG_DEBUG, ROUTINE,
249*9e86db79SHyon Kim 		    "Unable to locate requested Port WWN %016llx on "
250*9e86db79SHyon Kim 		    "handle %08lx", wwnConversion(portWWN.wwn), handle);
251*9e86db79SHyon Kim 	} else if (chkDomainPort && !domainPortFound) {
252*9e86db79SHyon Kim 		log(LOG_DEBUG, ROUTINE, "Unable to locate requested"
253*9e86db79SHyon Kim 		    " domainPortWWN %016llx on handle %08lx",
254*9e86db79SHyon Kim 		    wwnConversion(domainPortWWN.wwn), handle);
255*9e86db79SHyon Kim 	} else {
256*9e86db79SHyon Kim 		log(LOG_DEBUG, ROUTINE, "Unable to locate requested "
257*9e86db79SHyon Kim 		    "Port WWN %016llx on handle %08lx",
258*9e86db79SHyon Kim 		    wwnConversion(targetPortWWN.wwn), handle);
259*9e86db79SHyon Kim 	}
260*9e86db79SHyon Kim 	return (HBA_STATUS_ERROR_ILLEGAL_WWN);
261*9e86db79SHyon Kim }
262