sas2/common/sas2_functions.c

/*
 * 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 (c) 2010, Oracle and/or its affiliates. All rights reserved.
 */

#include <sys/types.h>
#include <sys/scsi/generic/commands.h>
#include <sys/scsi/impl/commands.h>
#include <sys/scsi/generic/smp_frames.h>

#include <scsi/libsmp.h>
#include <scsi/libsmp_plugin.h>
#include "sas2.h"

/*ARGSUSED*/
static size_t
sas2_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN);
}

/*ARGSUSED*/
static off_t
sas2_rq_dataoff(smp_action_t *ap, smp_target_t *tp)
{
    size_t len;

    smp_action_get_request_frame(ap, NULL, &len);

    if (len > SMP_REQ_MINLEN)
        return (offsetof(smp_request_frame_t, srf_data[0]));

    return (-1);
}

static void
sas2_rq_setframe(smp_action_t *ap, smp_target_t *tp)
{
    const smp_function_def_t *dp = smp_action_get_function_def(ap);
    smp_request_frame_t *fp;
    uint_t cap;
    uint16_t change_count;
    uint16_t *rqcc;
    size_t rqlen, rslen;

    smp_action_get_request_frame(ap, (void *)&fp, &rqlen);
    smp_action_get_response_frame(ap, NULL, &rslen);
    cap = smp_target_getcap(tp);

    fp->srf_frame_type = SMP_FRAME_TYPE_REQUEST;
    fp->srf_function = dp->sfd_function;

    if (cap & SMP_TARGET_C_LONG_RESP) {
        fp->srf_allocated_response_len = (rslen - SMP_RESP_MINLEN) / 4;
        fp->srf_request_len = (rqlen - SMP_REQ_MINLEN) / 4;
    } else {
        fp->srf_allocated_response_len = 0;
        fp->srf_request_len = 0;
    }

    /*
     * If this command requires that the expected expander change count
     * be set (as many do), we will attempt to set it based on the
     * most recently executed command.  However, if the user has set it
     * already, we will not overwrite that setting.  It is the consumer's
     * responsibility to keep track of expander changes each time it
     * receives a new change count in a response.
     */
    if (dp->sfd_flags & SMP_FD_F_NEEDS_CHANGE_COUNT) {
        ASSERT(rqlen >= SMP_REQ_MINLEN + sizeof (uint16_t));
        /* LINTED - alignment */
        rqcc = (uint16_t *)(&fp->srf_data[0]);
        if (SCSI_READ16(rqcc) == 0) {
            change_count = smp_target_get_change_count(tp);
            SCSI_WRITE16(rqcc, change_count);
        }
    }
}

/*ARGSUSED*/
static size_t
sas2_rs_datalen(smp_action_t *ap, smp_target_t *tp)
{
    smp_response_frame_t *fp;
    size_t len;

    smp_action_get_response_frame(ap, (void **)&fp, &len);

    if (len >= SMP_RESP_MINLEN)
        len -= SMP_RESP_MINLEN;
    else
        return (0);

    len &= ~3;

    if (fp->srf_response_len == 0)
        return (0);

    return (MIN(len, 4 * (fp->srf_response_len)));
}

/*ARGSUSED*/
static off_t
sas2_rs_dataoff(smp_action_t *ap, smp_target_t *tp)
{
    size_t len;

    smp_action_get_response_frame(ap, NULL, &len);

    if (len > SMP_RESP_MINLEN)
        return (offsetof(smp_request_frame_t, srf_data[0]));

    return (-1);
}

static void
sas2_rs_getparams(smp_action_t *ap, smp_target_t *tp)
{
    const smp_function_def_t *dp;
    smp_response_frame_t *fp;
    size_t len;
    uint16_t change_count;

    dp = smp_action_get_function_def(ap);

    smp_action_get_response_frame(ap, (void **)&fp, &len);

    smp_action_set_result(ap, fp->srf_result);

    if (!(dp->sfd_flags & SMP_FD_F_PROVIDES_CHANGE_COUNT))
        return;

    if (len <= SMP_RESP_MINLEN + sizeof (uint16_t))
        return;

    change_count = SCSI_READ16(&fp->srf_data[0]);
    smp_target_set_change_count(tp, change_count);
}

/*ARGSUSED*/
static size_t
sas2_report_general_rs_datalen(smp_action_t *ap, smp_target_t *tp)
{
    const smp_function_def_t *dp = smp_action_get_function_def(ap);
    smp_response_frame_t *fp;
    size_t len;

    ASSERT(dp->sfd_function == SMP_FUNC_REPORT_GENERAL);
    smp_action_get_response_frame(ap, (void **)&fp, &len);

    if (len >= SMP_RESP_MINLEN)
        len -= SMP_RESP_MINLEN;
    else
        return (0);

    len &= ~3;

    if (fp->srf_response_len == 0)
        return (MIN(len, 24));

    return (MIN(len, 4 * (fp->srf_response_len)));
}

/*ARGSUSED*/
static size_t
sas2_report_manufacturer_info_rs_datalen(smp_action_t *ap, smp_target_t *tp)
{
    const smp_function_def_t *dp = smp_action_get_function_def(ap);
    smp_response_frame_t *fp;
    size_t len;

    ASSERT(dp->sfd_function == SMP_FUNC_REPORT_MANUFACTURER_INFO);
    smp_action_get_response_frame(ap, (void **)&fp, &len);

    if (len >= SMP_RESP_MINLEN)
        len -= SMP_RESP_MINLEN;
    else
        return (0);

    len &= ~3;

    if (fp->srf_response_len == 0)
        return (MIN(len, 56));

    return (MIN(len, 4 * (fp->srf_response_len)));
}

/*ARGSUSED*/
static size_t
sas2_report_self_config_status_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_report_self_config_status_req_t));
}

/*ARGSUSED*/
static size_t
sas2_report_zone_perm_table_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_report_zone_perm_table_req_t));
}

/*ARGSUSED*/
static size_t
sas2_report_zone_mgr_password_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_report_zone_perm_table_req_t));
}

/*ARGSUSED*/
static size_t
sas2_report_broadcast_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_report_broadcast_req_t));
}

/*ARGSUSED*/
static size_t
sas2_discover_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_discover_req_t));
}

/*ARGSUSED*/
static size_t
sas2_discover_rs_datalen(smp_action_t *ap, smp_target_t *tp)
{
    const smp_function_def_t *dp = smp_action_get_function_def(ap);
    smp_response_frame_t *fp;
    size_t len;

    ASSERT(dp->sfd_function == SMP_FUNC_DISCOVER);
    smp_action_get_response_frame(ap, (void **)&fp, &len);

    if (len >= SMP_RESP_MINLEN)
        len -= SMP_RESP_MINLEN;
    else
        return (0);

    len &= ~3;

    if (fp->srf_response_len == 0)
        return (MIN(len, 48));

    return (MIN(len, 4 * (fp->srf_response_len)));
}

/*ARGSUSED*/
static size_t
sas2_report_phy_error_log_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_report_phy_error_log_req_t));
}

/*ARGSUSED*/
static size_t
sas2_report_phy_error_log_rs_datalen(smp_action_t *ap, smp_target_t *tp)
{
    const smp_function_def_t *dp = smp_action_get_function_def(ap);
    smp_response_frame_t *fp;
    size_t len;

    ASSERT(dp->sfd_function == SMP_FUNC_REPORT_PHY_ERROR_LOG);
    smp_action_get_response_frame(ap, (void **)&fp, &len);

    if (len >= SMP_RESP_MINLEN)
        len -= SMP_RESP_MINLEN;
    else
        return (0);

    len &= ~3;

    if (fp->srf_response_len == 0)
        return (MIN(len, sizeof (smp_report_phy_error_log_resp_t)));

    return (MIN(len, 4 * (fp->srf_response_len)));
}

/*ARGSUSED*/
static size_t
sas2_report_phy_sata_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_report_phy_sata_req_t));
}

/*ARGSUSED*/
static size_t
sas2_report_phy_sata_rs_datalen(smp_action_t *ap, smp_target_t *tp)
{
    const smp_function_def_t *dp = smp_action_get_function_def(ap);
    smp_response_frame_t *fp;
    size_t len;

    ASSERT(dp->sfd_function == SMP_FUNC_REPORT_PHY_SATA);
    smp_action_get_response_frame(ap, (void **)&fp, &len);

    if (len >= SMP_RESP_MINLEN)
        len -= SMP_RESP_MINLEN;
    else
        return (0);

    len &= ~3;

    if (fp->srf_response_len == 0)
        return (MIN(len, 52));

    return (MIN(len, 4 * (fp->srf_response_len)));
}

/*ARGSUSED*/
static size_t
sas2_report_route_info_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_report_route_info_req_t));
}

/*ARGSUSED*/
static size_t
sas2_report_route_info_rs_datalen(smp_action_t *ap, smp_target_t *tp)
{
    const smp_function_def_t *dp = smp_action_get_function_def(ap);
    smp_response_frame_t *fp;
    size_t len;

    ASSERT(dp->sfd_function == SMP_FUNC_REPORT_ROUTE_INFO);
    smp_action_get_response_frame(ap, (void **)&fp, &len);

    if (len >= SMP_RESP_MINLEN)
        len -= SMP_RESP_MINLEN;
    else
        return (0);

    len &= ~3;

    if (fp->srf_response_len == 0)
        return (MIN(len, sizeof (smp_report_route_info_resp_t)));

    return (MIN(len, 4 * (fp->srf_response_len)));
}

/*ARGSUSED*/
static size_t
sas2_report_phy_event_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_report_phy_event_req_t));
}

/*ARGSUSED*/
static size_t
sas2_discover_list_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_discover_list_req_t));
}

/*ARGSUSED*/
static size_t
sas2_report_phy_event_list_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_report_phy_event_list_req_t));
}

/*ARGSUSED*/
static size_t
sas2_report_exp_route_table_list_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN +
        sizeof (smp_report_exp_route_table_list_req_t));
}

/*ARGSUSED*/
static size_t
sas2_config_general_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_config_general_req_t));
}

/*ARGSUSED*/
static size_t
sas2_enable_disable_zoning_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_enable_disable_zoning_req_t));
}

/*ARGSUSED*/
static size_t
sas2_zoned_broadcast_rq_len(size_t user, smp_target_t *tp)
{
    size_t descrsz;

    if (user == 0 || user > 1008) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    descrsz = P2ROUNDUP((user - 1), 4);

    return (SMP_REQ_MINLEN + descrsz + sizeof (smp_zoned_broadcast_req_t));
}

/*ARGSUSED*/
static size_t
sas2_zone_lock_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_zone_lock_req_t));
}

/*ARGSUSED*/
static size_t
sas2_zone_activate_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_zone_activate_req_t));
}

/*ARGSUSED*/
static size_t
sas2_zone_unlock_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_zone_unlock_req_t));
}

/*ARGSUSED*/
static size_t
sas2_config_zone_manager_password_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN +
        sizeof (smp_config_zone_manager_password_req_t));
}

/*ARGSUSED*/
static size_t
sas2_config_zone_phy_info_rq_len(size_t user, smp_target_t *tp)
{
    if (user == 0 || user > 252) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_config_zone_phy_info_req_t) +
        (user - 1) * sizeof (smp_zone_phy_config_descr_t));
}

static size_t
sas2_config_zone_perm_table_rq_len(size_t user, smp_target_t *tp)
{
    uint_t cap = smp_target_getcap(tp);
    size_t maxdescr, descrsz;

    if (cap & SMP_TARGET_C_ZG_256)
        descrsz = sizeof (smp_zone_perm_descr256_t);
    else
        descrsz = sizeof (smp_zone_perm_descr128_t);

    maxdescr = (1020 - sizeof (smp_config_zone_perm_table_req_t)) / descrsz;

    if (user == 0 || user > maxdescr) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_config_zone_perm_table_req_t) - 1 +
        user * descrsz);
}

/*ARGSUSED*/
static size_t
sas2_config_route_info_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_config_route_info_req_t));
}

/*ARGSUSED*/
static size_t
sas2_phy_control_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_phy_control_req_t));
}

/*ARGSUSED*/
static size_t
sas2_phy_test_function_rq_len(size_t user, smp_target_t *tp)
{
    if (user != 0) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_phy_test_function_req_t));
}

/*ARGSUSED*/
static size_t
sas2_config_phy_event_rq_len(size_t user, smp_target_t *tp)
{
    if (user == 0 || user > 126) {
        (void) smp_set_errno(ESMP_RANGE);
        return (0);
    }

    return (SMP_REQ_MINLEN + sizeof (smp_config_phy_event_req_t) +
        (user - 1) * sizeof (smp_phy_event_config_descr_t));
}

smp_function_def_t sas2_functions[] = {
{
    .sfd_function = SMP_FUNC_REPORT_GENERAL,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_report_general_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_REPORT_MANUFACTURER_INFO,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_report_manufacturer_info_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_REPORT_SELF_CONFIG_STATUS,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_report_self_config_status_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_REPORT_ZONE_PERM_TABLE,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_report_zone_perm_table_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_REPORT_ZONE_MANAGER_PASSWORD,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_report_zone_mgr_password_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_REPORT_BROADCAST,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_report_broadcast_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_DISCOVER,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_discover_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_discover_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_REPORT_PHY_ERROR_LOG,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_report_phy_error_log_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_report_phy_error_log_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_REPORT_PHY_SATA,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_report_phy_sata_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_report_phy_sata_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_REPORT_ROUTE_INFO,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_report_route_info_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_report_route_info_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_REPORT_PHY_EVENT,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_report_phy_event_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_DISCOVER_LIST,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_discover_list_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_REPORT_PHY_EVENT_LIST,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_report_phy_event_list_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_REPORT_EXP_ROUTE_TABLE_LIST,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_PROVIDES_CHANGE_COUNT,
    .sfd_rq_len = sas2_report_exp_route_table_list_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_CONFIG_GENERAL,
    .sfd_flags = SMP_FD_F_WRITE | SMP_FD_F_NEEDS_CHANGE_COUNT,
    .sfd_rq_len = sas2_config_general_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_ENABLE_DISABLE_ZONING,
    .sfd_flags = SMP_FD_F_WRITE | SMP_FD_F_NEEDS_CHANGE_COUNT,
    .sfd_rq_len = sas2_enable_disable_zoning_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_ZONED_BROADCAST,
    .sfd_flags = SMP_FD_F_WRITE,
    .sfd_rq_len = sas2_zoned_broadcast_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_ZONE_LOCK,
    .sfd_flags = SMP_FD_F_READ | SMP_FD_F_WRITE |
        SMP_FD_F_NEEDS_CHANGE_COUNT,
    .sfd_rq_len = sas2_zone_lock_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_ZONE_ACTIVATE,
    .sfd_flags = SMP_FD_F_WRITE | SMP_FD_F_NEEDS_CHANGE_COUNT,
    .sfd_rq_len = sas2_zone_activate_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_ZONE_UNLOCK,
    .sfd_flags = SMP_FD_F_WRITE,
    .sfd_rq_len = sas2_zone_unlock_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_CONFIG_ZONE_MANAGER_PASSWORD,
    .sfd_flags = SMP_FD_F_WRITE | SMP_FD_F_NEEDS_CHANGE_COUNT,
    .sfd_rq_len = sas2_config_zone_manager_password_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_CONFIG_ZONE_PHY_INFO,
    .sfd_flags = SMP_FD_F_WRITE | SMP_FD_F_NEEDS_CHANGE_COUNT,
    .sfd_rq_len = sas2_config_zone_phy_info_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_CONFIG_ZONE_PERM_TABLE,
    .sfd_flags = SMP_FD_F_WRITE | SMP_FD_F_NEEDS_CHANGE_COUNT,
    .sfd_rq_len = sas2_config_zone_perm_table_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_CONFIG_ROUTE_INFO,
    .sfd_flags = SMP_FD_F_WRITE | SMP_FD_F_NEEDS_CHANGE_COUNT,
    .sfd_rq_len = sas2_config_route_info_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_PHY_CONTROL,
    .sfd_flags = SMP_FD_F_WRITE | SMP_FD_F_NEEDS_CHANGE_COUNT,
    .sfd_rq_len = sas2_phy_control_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_PHY_TEST_FUNCTION,
    .sfd_flags = SMP_FD_F_WRITE | SMP_FD_F_NEEDS_CHANGE_COUNT,
    .sfd_rq_len = sas2_phy_test_function_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = SMP_FUNC_CONFIG_PHY_EVENT,
    .sfd_flags = SMP_FD_F_WRITE | SMP_FD_F_NEEDS_CHANGE_COUNT,
    .sfd_rq_len = sas2_config_phy_event_rq_len,
    .sfd_rq_dataoff = sas2_rq_dataoff,
    .sfd_rq_setframe = sas2_rq_setframe,
    .sfd_rs_datalen = sas2_rs_datalen,
    .sfd_rs_dataoff = sas2_rs_dataoff,
    .sfd_rs_getparams = sas2_rs_getparams
},
{
    .sfd_function = -1
}
};

/*
 * Returns the number of bytes in the request frame, including the header
 * and footer, for the given function and capabilities.  Presently the only
 * relevant capability is long-request, which in some cases increases the
 * size of the request from the SAS-1 spec to that found in SAS-2.
 *
 * Variably-sized request frames have no default size; we return 0 in that
 * case, which will often be interpreted by the caller as an error although
 * in general it is not.
 */
size_t
smp_default_request_len(uint_t cap, smp_function_t fn)
{
    switch (fn) {
    case SMP_FUNC_REPORT_GENERAL:
    case SMP_FUNC_REPORT_MANUFACTURER_INFO:
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_REPORT_ZONE_MANAGER_PASSWORD:
        return (SMP_REQ_MINLEN +
            sizeof (smp_report_zone_mgr_password_req_t));
    case SMP_FUNC_REPORT_SELF_CONFIG_STATUS:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_report_self_config_status_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_REPORT_ZONE_PERM_TABLE:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_report_zone_perm_table_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_REPORT_BROADCAST:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_report_broadcast_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_DISCOVER:
        return (SMP_REQ_MINLEN + sizeof (smp_discover_req_t));
    case SMP_FUNC_REPORT_PHY_ERROR_LOG:
        return (SMP_REQ_MINLEN +
            sizeof (smp_report_phy_error_log_req_t));
    case SMP_FUNC_REPORT_PHY_SATA:
        return (SMP_REQ_MINLEN + sizeof (smp_report_phy_sata_req_t));
    case SMP_FUNC_REPORT_ROUTE_INFO:
        return (SMP_REQ_MINLEN + sizeof (smp_report_route_info_req_t));
    case SMP_FUNC_REPORT_PHY_EVENT:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_report_phy_event_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_DISCOVER_LIST:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_discover_list_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_REPORT_PHY_EVENT_LIST:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_report_phy_event_list_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_REPORT_EXP_ROUTE_TABLE_LIST:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_report_exp_route_table_list_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_CONFIG_GENERAL:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_config_general_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_ENABLE_DISABLE_ZONING:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_enable_disable_zoning_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_ZONE_LOCK:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_zone_lock_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_ZONE_ACTIVATE:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_zone_activate_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_ZONE_UNLOCK:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_zone_unlock_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_CONFIG_ZONE_MANAGER_PASSWORD:
        if (cap & SMP_TARGET_C_LONG_RESP)
            return (SMP_REQ_MINLEN +
                sizeof (smp_config_zone_manager_password_req_t));
        return (SMP_REQ_MINLEN);
    case SMP_FUNC_CONFIG_ROUTE_INFO:
        return (SMP_REQ_MINLEN + sizeof (smp_config_route_info_req_t));
    case SMP_FUNC_PHY_CONTROL:
        return (SMP_REQ_MINLEN + sizeof (smp_phy_control_req_t));
    case SMP_FUNC_PHY_TEST_FUNCTION:
        return (SMP_REQ_MINLEN + sizeof (smp_phy_test_function_req_t));

    case SMP_FUNC_ZONED_BROADCAST:
    case SMP_FUNC_CONFIG_ZONE_PHY_INFO:
    case SMP_FUNC_CONFIG_ZONE_PERM_TABLE:
    case SMP_FUNC_CONFIG_PHY_EVENT:
    default:
        return (0);
    }
}

/*
 * This is slightly different - return the length in bytes, including the
 * header and footer, to be assumed for the response frame type if the
 * length field is zero.  Since the length field will not be zero unless the
 * long response bit is clear or the target is buggy, we always assume that
 * the caller wants the size of the v1 frame.
 */
/*ARGSUSED*/
size_t
smp_default_response_len(uint_t cap, smp_function_t fn)
{
    switch (fn) {
    case SMP_FUNC_REPORT_SELF_CONFIG_STATUS:
    case SMP_FUNC_REPORT_ZONE_PERM_TABLE:
    case SMP_FUNC_REPORT_BROADCAST:
    case SMP_FUNC_REPORT_PHY_EVENT:
    case SMP_FUNC_DISCOVER_LIST:
    case SMP_FUNC_REPORT_PHY_EVENT_LIST:
    case SMP_FUNC_REPORT_EXP_ROUTE_TABLE_LIST:
    case SMP_FUNC_CONFIG_GENERAL:
    case SMP_FUNC_ENABLE_DISABLE_ZONING:
    case SMP_FUNC_ZONED_BROADCAST:
    case SMP_FUNC_ZONE_LOCK:
    case SMP_FUNC_ZONE_ACTIVATE:
    case SMP_FUNC_ZONE_UNLOCK:
    case SMP_FUNC_CONFIG_ZONE_MANAGER_PASSWORD:
    case SMP_FUNC_CONFIG_ZONE_PHY_INFO:
    case SMP_FUNC_CONFIG_ZONE_PERM_TABLE:
    case SMP_FUNC_CONFIG_ROUTE_INFO:
    case SMP_FUNC_PHY_CONTROL:
    case SMP_FUNC_PHY_TEST_FUNCTION:
    case SMP_FUNC_CONFIG_PHY_EVENT:
        return (SMP_RESP_MINLEN);
    case SMP_FUNC_REPORT_ZONE_MANAGER_PASSWORD:
        return (SMP_RESP_MINLEN +
            sizeof (smp_report_zone_mgr_password_resp_t));
    case SMP_FUNC_REPORT_GENERAL:
        return (SMP_RESP_MINLEN + 24);
    case SMP_FUNC_REPORT_MANUFACTURER_INFO:
        return (SMP_RESP_MINLEN +
            sizeof (smp_report_manufacturer_info_resp_t));
    case SMP_FUNC_DISCOVER:
        return (SMP_RESP_MINLEN + 48);
    case SMP_FUNC_REPORT_PHY_ERROR_LOG:
        return (SMP_RESP_MINLEN +
            sizeof (smp_report_phy_error_log_resp_t));
    case SMP_FUNC_REPORT_PHY_SATA:
        return (SMP_RESP_MINLEN + 52);
    case SMP_FUNC_REPORT_ROUTE_INFO:
        return (SMP_RESP_MINLEN +
            sizeof (smp_report_route_info_resp_t));

    default:
        return (0);
    }
}