sun_sas/common/Sun_sasGetSASPhyAttributes.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 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include    <sun_sas.h>

/*
 * Retrieves the statistics for a specified port on an adapter
 */
HBA_STATUS Sun_sasGetSASPhyAttributes(HBA_HANDLE handle,
    HBA_UINT32 port, HBA_UINT32 phy, SMHBA_SAS_PHY *pAttributes)
{
    const char  ROUTINE[] = "Sun_sasGetSASPhyAttributes";
    HBA_STATUS      status = HBA_STATUS_OK;
    struct sun_sas_hba  *hba_ptr;
    struct sun_sas_port *hba_port_ptr;
    struct phy_info     *phy_ptr;

    /* Validate the arguments */
    if (pAttributes == NULL) {
        log(LOG_DEBUG, ROUTINE, "NULL response buffer");
        return (HBA_STATUS_ERROR_ARG);
    }
    lock(&all_hbas_lock);

    if ((hba_ptr = Retrieve_Sun_sasHandle(handle)) == NULL) {
        log(LOG_DEBUG, ROUTINE, "Invalid handle %08lx", handle);
        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(&all_hbas_lock);
        return (status);
    }

    for (hba_port_ptr = hba_ptr->first_port;
        hba_port_ptr != NULL;
        hba_port_ptr = hba_port_ptr->next) {
        if (hba_port_ptr->index == port) {
            break;
        }
    }

    if (hba_port_ptr == NULL) {
        log(LOG_DEBUG, ROUTINE, "Invalid port index");
        unlock(&all_hbas_lock);
        return (HBA_STATUS_ERROR_ILLEGAL_INDEX);
    }

    /* match phy index. */
    if (phy >= hba_port_ptr->port_attributes.PortSpecificAttribute.
        SASPort->NumberofPhys) {
        log(LOG_DEBUG, ROUTINE, "Invalid phy index %d", phy);
        unlock(&all_hbas_lock);
        return (HBA_STATUS_ERROR_ILLEGAL_INDEX);
    } else {
        for (phy_ptr = hba_port_ptr->first_phy; phy_ptr != NULL;
            phy_ptr = phy_ptr->next) {
            if (phy == phy_ptr->index) {
                (void) memset(pAttributes, 0,
                    sizeof (SMHBA_SAS_PHY));
                (void) memcpy(pAttributes, &phy_ptr->phy,
                    sizeof (SMHBA_SAS_PHY));
                unlock(&all_hbas_lock);
                return (HBA_STATUS_OK);
            }
        }
    }

    unlock(&all_hbas_lock);
    log(LOG_DEBUG, ROUTINE, "Illegal phy index %d", phy);
    return (HBA_STATUS_ERROR_ILLEGAL_INDEX);
}