/*
 * 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 attributes for a specified port discovered in the network
 */
HBA_STATUS
Sun_sasGetDiscoveredPortAttributes(HBA_HANDLE handle,
	    HBA_UINT32 port, HBA_UINT32 discoveredport,
	    SMHBA_PORTATTRIBUTES *attributes) {
	const char		ROUTINE[] =
	    "Sun_sasGetDiscoveredPortAttributes";
	HBA_STATUS		status;
	HBA_STATUS		ret = HBA_STATUS_OK;
	struct sun_sas_hba	*hba_ptr;
	struct sun_sas_port	*hba_port_ptr, *hba_disco_port;
	int			index;

	if (attributes == NULL) {
	    log(LOG_DEBUG, ROUTINE,
		"NULL attributes argument. Handle %08lx, port %d, "
		"discovered port %d", handle, port, discoveredport);
	    return (HBA_STATUS_ERROR_ARG);
	}

	lock(&all_hbas_lock);
	index = RetrieveIndex(handle);
	lock(&open_handles_lock);
	hba_ptr = RetrieveHandle(index);
	if (hba_ptr == 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 (hba_ptr->first_port == NULL) {
	    /* This is probably an internal failure of the library */
	    if (hba_ptr->device_path) {
		log(LOG_DEBUG, ROUTINE,
		    "Internal failure:  Adapter %s contains no port data",
		    hba_ptr->device_path);
	    } else {
		log(LOG_DEBUG, ROUTINE,
		    "Internal failure:  Adapter at index %d contains no port "
		    "data", hba_ptr->index);
	    }
	    unlock(&open_handles_lock);
	    unlock(&all_hbas_lock);
	    return (HBA_STATUS_ERROR);
	}

	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 %d for handle %08lx",
		    port, handle);
		unlock(&open_handles_lock);
		unlock(&all_hbas_lock);
		return (HBA_STATUS_ERROR_ILLEGAL_INDEX);
	}

	/* check to make sure there are devices attached to this port */
	if (hba_port_ptr->first_attached_port != NULL) {
		for (hba_disco_port = hba_port_ptr->first_attached_port;
			hba_disco_port != NULL;
			hba_disco_port = hba_disco_port->next) {
		    if (hba_disco_port->index == discoveredport) {
			break;
		    }
		}
		if (hba_disco_port == NULL) {
			log(LOG_DEBUG, ROUTINE,
			    "Invalid discovered port index %d for hba port "
			    "index %d on handle %08lx.",
			    discoveredport, port, handle);
			ret = HBA_STATUS_ERROR_ILLEGAL_INDEX;
		} else {
		    attributes->PortType =
			hba_disco_port->port_attributes.PortType;
		    attributes->PortState =
			hba_disco_port->port_attributes.PortState;
		    (void) strlcpy(attributes->OSDeviceName,
			hba_disco_port->port_attributes.OSDeviceName,
			sizeof (attributes->OSDeviceName));
		    (void) memcpy(attributes->PortSpecificAttribute.SASPort,
			hba_disco_port->port_attributes.PortSpecificAttribute.
			SASPort, sizeof (struct SMHBA_SAS_Port));
		}
	} else {
		/* No ports, so we can't possibly return anything */
		log(LOG_DEBUG, ROUTINE,
		    "No discovered port on HBA port index %d for handle %08lx",
		    port, handle);
		ret = HBA_STATUS_ERROR;
	}
	unlock(&open_handles_lock);
	unlock(&all_hbas_lock);

	return (ret);
}