/*
 * 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 "Trace.h"
#include "Exceptions.h"
#include "sun_fc.h"



#include <string.h>
#include "Handle.h"
#include "HBA.h"
#include "HBAPort.h"
inline HBA_WWN
getAdapterPortWWN(HBA_HANDLE handle,HBA_UINT32 index) {
        HBA_WWN hba_wwn;
        memset(hba_wwn.wwn, 0, sizeof (hba_wwn));
        try {
            Handle *myHandle = Handle::findHandle(handle);
            HBA *hba = myHandle->getHBA();
                HBAPort *port = hba->getPortByIndex(index);
            uint64_t tmp = htonll(port->getPortWWN());
            memcpy(hba_wwn.wwn, &tmp, sizeof (hba_wwn));
        } catch (...) { }
        return (hba_wwn);
}

#ifdef  __cplusplus
extern "C" {
#endif

/**
 * @memo            Retrieves the mapping between FCP targets and OS
 *                  SCSI information
 * @return          HBA_STATUS_OK if the mapping structure contains valid
 *                  mapping data.
 * @param           handle The HBA to fetch mappings for
 * @param           mapping The user-allocated mapping structure
 *
 * @doc             This routine will call the V2 interface and convert
 *                  the results to the old data structure.  It will
 *                  call the V2 interface for all ports on the HBA.
 */
HBA_STATUS
Sun_fcGetFcpTargetMapping(HBA_HANDLE handle, PHBA_FCPTARGETMAPPING mapping) {
        HBA_STATUS                  status;
        int                         count;
        PHBA_FCPTARGETMAPPINGV2     mappingV2;
        HBA_ADAPTERATTRIBUTES       attributes;
        HBA_UINT32                  entries = 0;
        HBA_UINT32                  current = 0;
        HBA_UINT32                  port;
        HBA_UINT32                  limit;

        Trace log("Sun_fcGetFcpTargetMapping");

        if (mapping == NULL) {
            log.userError("NULL mapping argument.");
            return (HBA_STATUS_ERROR_ARG);
        }

        entries = mapping->NumberOfEntries;

        /* get adapter attributes for number of ports */
        status = Sun_fcGetAdapterAttributes(handle,&attributes);
        if (status != HBA_STATUS_OK) {
                log.userError("Unable to get adapter attributes");
                return HBA_STATUS_ERROR;
        }

        mappingV2 = (PHBA_FCPTARGETMAPPINGV2) new uchar_t[
            (sizeof (HBA_FCPSCSIENTRYV2)*(mapping->NumberOfEntries-1)) +
            sizeof (HBA_FCPTARGETMAPPINGV2)];
        mapping->NumberOfEntries = 0;

        for(port = 0; port < attributes.NumberOfPorts; port++) {
                mappingV2->NumberOfEntries = mapping->NumberOfEntries < entries ?
                    entries - mapping->NumberOfEntries : 0 ;
                status = Sun_fcGetFcpTargetMappingV2(handle,
                        getAdapterPortWWN(handle,port), mappingV2);
                mapping->NumberOfEntries += mappingV2->NumberOfEntries;

                if (status != HBA_STATUS_OK && status != HBA_STATUS_ERROR_MORE_DATA) {
                                log.userError("Unable to get mappings for port");
                                return status;
                }
                /*
                 * need to copy from PHBA_FCPTARGETMAPPINGV2 to
                 * PHBA_FCPTARGETMAPPING
                 */
                limit = (mapping->NumberOfEntries < entries) ? mapping->NumberOfEntries : entries;
                for (count = current; count < limit; count++) {
                        memcpy(&mapping->entry[count].ScsiId,
                                &mappingV2->entry[count-current].ScsiId,
                            sizeof (mapping->entry[count].ScsiId));
                        memcpy(&mapping->entry[count].FcpId,
                                &mappingV2->entry[count-current].FcpId,
                            sizeof (mapping->entry[count].FcpId));
                }
                current = mapping->NumberOfEntries;
        }

        delete[](mappingV2);
        return (status);
}
#ifdef  __cplusplus
}
#endif