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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sun_sas.h>
/*
* Pass request buffer into uscsi command and sent it out via ioctl
*/
static HBA_STATUS
SendScsiReadCapacity(const char *devpath, void *responseBuffer,
HBA_UINT32 *responseSize, HBA_UINT8 *scsiStatus,
void *senseBuffer, HBA_UINT32 *senseSize)
{
HBA_UINT32 status;
struct uscsi_cmd ucmd_buf;
union scsi_cdb cdb;
bzero(&cdb, sizeof (cdb));
bzero(&ucmd_buf, sizeof (ucmd_buf));
bzero(senseBuffer, *senseSize);
bzero(responseBuffer, *responseSize);
cdb.scc_cmd = SCMD_READ_CAPACITY;
ucmd_buf.uscsi_cdb = (char *)&cdb;
ucmd_buf.uscsi_cdblen = CDB_GROUP1;
ucmd_buf.uscsi_bufaddr = (caddr_t)responseBuffer;
ucmd_buf.uscsi_buflen = *responseSize;
ucmd_buf.uscsi_rqbuf = (caddr_t)senseBuffer;
ucmd_buf.uscsi_rqlen = *senseSize;
ucmd_buf.uscsi_flags = USCSI_READ | USCSI_SILENT | USCSI_RQENABLE;
ucmd_buf.uscsi_timeout = 60;
status = send_uscsi_cmd(devpath, &ucmd_buf);
*scsiStatus = ucmd_buf.uscsi_status;
return (status);
}
/*
* Send a read capacity to a remote WWN
*/
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)
{
const char ROUTINE[] = "Sun_sasScsiReadCapacity";
HBA_STATUS status;
int index = 0, domainPortFound = 0;
int hbaPortFound = 0;
int chkDomainPort = 0;
struct sun_sas_hba *hba_ptr = NULL;
struct sun_sas_port *hba_port_ptr, *hba_disco_port;
struct ScsiEntryList *mapping_ptr;
hrtime_t start, end;
double duration;
HBA_SCSILUN hba_lun;
start = gethrtime();
/* Validate the arguments */
if (responseBuffer == NULL) {
log(LOG_DEBUG, ROUTINE, "NULL response buffer");
return (HBA_STATUS_ERROR_ARG);
}
if (senseBuffer == NULL) {
log(LOG_DEBUG, ROUTINE, "NULL sense buffer");
return (HBA_STATUS_ERROR_ARG);
}
if (responseSize == NULL) {
log(LOG_DEBUG, ROUTINE, "NULL response size");
return (HBA_STATUS_ERROR_ARG);
}
if (senseSize == NULL) {
log(LOG_DEBUG, ROUTINE, "NULL sense size");
return (HBA_STATUS_ERROR_ARG);
}
if (scsiStatus == NULL) {
log(LOG_DEBUG, ROUTINE, "NULL scsi status");
return (HBA_STATUS_ERROR_ARG);
}
lock(&all_hbas_lock);
index = RetrieveIndex(handle);
lock(&open_handles_lock);
if ((hba_ptr = RetrieveHandle(index)) == NULL) {
log(LOG_DEBUG, ROUTINE, "Invalid handle %08lx", handle);
unlock(&open_handles_lock);
unlock(&all_hbas_lock);
return (HBA_STATUS_ERROR_INVALID_HANDLE);
}
/* Check for stale data */
status = verifyAdapter(hba_ptr);
if (status != HBA_STATUS_OK) {
log(LOG_DEBUG, ROUTINE, "Verify adapter failed");
unlock(&open_handles_lock);
unlock(&all_hbas_lock);
return (status);
}
if (wwnConversion(domainPortWWN.wwn))
chkDomainPort = 1;
/*
* We are not checking to see if our data is stale.
* By verifying this information here, we will take a big performance
* hit. This check will be done later only if the FCSM ioctl fails
*/
/* Determine which port to use */
for (hba_port_ptr = hba_ptr->first_port;
hba_port_ptr != NULL;
hba_port_ptr = hba_port_ptr->next) {
if (hbaPortFound == 0) {
if (wwnConversion(hba_port_ptr->port_attributes.
PortSpecificAttribute.SASPort->LocalSASAddress.wwn)
!= wwnConversion(portWWN.wwn)) {
/*
* Since all the ports under the same HBA have
* the same LocalSASAddress, we should break
* the loop once we find it dosn't match.
*/
break;
} else {
hbaPortFound = 1;
}
}
if (chkDomainPort != 0) {
if (hba_port_ptr->first_phy != NULL &&
wwnConversion(hba_port_ptr->first_phy->
phy.domainPortWWN.wwn) ==
wwnConversion(domainPortWWN.wwn)) {
domainPortFound = 1;
}
if (!(domainPortFound)) {
continue;
}
}
for (hba_disco_port = hba_port_ptr->first_attached_port;
hba_disco_port != NULL;
hba_disco_port = hba_disco_port->next) {
/*
* If discoveredPort is not given targetPort, just skip
*/
if (wwnConversion(hba_disco_port->port_attributes.\
PortSpecificAttribute.SASPort->LocalSASAddress.wwn)
!= wwnConversion(targetPortWWN.wwn)) {
/* Does not match */
continue;
}
/*
* If discoveredPort is not a SAS/SATA port, it is not a
* target port
*/
if ((hba_disco_port->port_attributes.PortType !=
HBA_PORTTYPE_SATADEVICE) &&
(hba_disco_port->port_attributes.PortType !=
HBA_PORTTYPE_SASDEVICE)) {
unlock(&open_handles_lock);
unlock(&all_hbas_lock);
log(LOG_DEBUG, ROUTINE, "Target Port WWN "
"%016llx on handle %08lx is not a Target",
wwnConversion(targetPortWWN.wwn), handle);
return (HBA_STATUS_ERROR_NOT_A_TARGET);
}
/*
* Iterating and matching is needed.
*/
for (mapping_ptr = hba_disco_port->scsiInfo;
mapping_ptr != NULL;
mapping_ptr = mapping_ptr->next) {
if (memcmp(
&mapping_ptr->entry.PortLun.TargetLun,
&smhbaLUN, sizeof (HBA_SCSILUN))
!= 0) {
continue;
}
status = SendScsiReadCapacity(
mapping_ptr->entry.ScsiId.\
OSDeviceName,
responseBuffer, responseSize,
scsiStatus, senseBuffer, senseSize);
unlock(&open_handles_lock);
unlock(&all_hbas_lock);
end = gethrtime();
duration = end - start;
duration /= HR_SECOND;
log(LOG_DEBUG, ROUTINE, "Took total\
of %.4f seconds", duration);
return (status);
}
unlock(&open_handles_lock);
unlock(&all_hbas_lock);
(void *) memcpy(&hba_lun, &smhbaLUN,
sizeof (HBA_SCSILUN));
log(LOG_DEBUG, ROUTINE, "Unable to locate lun"
" %08lx for target %016llx on handle %08lx",
hba_lun, wwnConversion(targetPortWWN.wwn), handle);
return (HBA_STATUS_ERROR_INVALID_LUN);
}
if (chkDomainPort) {
unlock(&open_handles_lock);
unlock(&all_hbas_lock);
log(LOG_DEBUG, ROUTINE, "Unable to locate requested "
"Port WWN %016llx on handle %08lx",
wwnConversion(targetPortWWN.wwn), handle);
return (HBA_STATUS_ERROR_ILLEGAL_WWN);
}
}
unlock(&open_handles_lock);
unlock(&all_hbas_lock);
if (hbaPortFound == 0) {
log(LOG_DEBUG, ROUTINE,
"Unable to locate requested Port WWN %016llx on "
"handle %08lx", wwnConversion(portWWN.wwn), handle);
} else if (chkDomainPort && !domainPortFound) {
log(LOG_DEBUG, ROUTINE, "Unable to locate requested"
" domainPortWWN %016llx on handle %08lx",
wwnConversion(domainPortWWN.wwn), handle);
} else {
log(LOG_DEBUG, ROUTINE, "Unable to locate requested "
"Port WWN %016llx on handle %08lx",
wwnConversion(targetPortWWN.wwn), handle);
}
return (HBA_STATUS_ERROR_ILLEGAL_WWN);
}
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