linux/drivers/scsi/libsas/sas_event.c

/*
 * Serial Attached SCSI (SAS) Event processing
 *
 * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
 *
 * This file is licensed under GPLv2.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#include <scsi/scsi_host.h>
#include "sas_internal.h"
#include "sas_dump.h"

static void notify_ha_event(struct sas_ha_struct *sas_ha, enum ha_event event)
{
	BUG_ON(event >= HA_NUM_EVENTS);

	sas_queue_event(event, &sas_ha->event_lock, &sas_ha->pending,
			&sas_ha->ha_events[event].work, sas_ha);
}

static void notify_port_event(struct asd_sas_phy *phy, enum port_event event)
{
	struct sas_ha_struct *ha = phy->ha;

	BUG_ON(event >= PORT_NUM_EVENTS);

	sas_queue_event(event, &ha->event_lock, &phy->port_events_pending,
			&phy->port_events[event].work, ha);
}

static void notify_phy_event(struct asd_sas_phy *phy, enum phy_event event)
{
	struct sas_ha_struct *ha = phy->ha;

	BUG_ON(event >= PHY_NUM_EVENTS);

	sas_queue_event(event, &ha->event_lock, &phy->phy_events_pending,
			&phy->phy_events[event].work, ha);
}

int sas_init_events(struct sas_ha_struct *sas_ha)
{
	static const work_func_t sas_ha_event_fns[HA_NUM_EVENTS] = {
		[HAE_RESET] = sas_hae_reset,
	};

	int i;

	spin_lock_init(&sas_ha->event_lock);

	for (i = 0; i < HA_NUM_EVENTS; i++) {
		INIT_WORK(&sas_ha->ha_events[i].work, sas_ha_event_fns[i]);
		sas_ha->ha_events[i].ha = sas_ha;
	}

	sas_ha->notify_ha_event = notify_ha_event;
	sas_ha->notify_port_event = notify_port_event;
	sas_ha->notify_phy_event = notify_phy_event;

	return 0;
}