LXR linux/drivers/scsi/libsas/sas

   1/*
   2 * Serial Attached SCSI (SAS) Event processing
   3 *
   4 * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
   5 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
   6 *
   7 * This file is licensed under GPLv2.
   8 *
   9 * This program is free software; you can redistribute it and/or
  10 * modify it under the terms of the GNU General Public License as
  11 * published by the Free Software Foundation; either version 2 of the
  12 * License, or (at your option) any later version.
  13 *
  14 * This program is distributed in the hope that it will be useful, but
  15 * WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17 * General Public License for more details.
  18 *
  19 * You should have received a copy of the GNU General Public License
  20 * along with this program; if not, write to the Free Software
  21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  22 *
  23 */
  24
  25#include <scsi/scsi_host.h>
  26#include "sas_internal.h"
  27#include "sas_dump.h"
  28
  29static void notify_ha_event(struct sas_ha_struct *sas_ha, enum ha_event event)
  30{
  31        BUG_ON(event >= HA_NUM_EVENTS);
  32
  33        sas_queue_event(event, &sas_ha->event_lock, &sas_ha->pending,
  34                        &sas_ha->ha_events[event].work, sas_ha);
  35}
  36
  37static void notify_port_event(struct asd_sas_phy *phy, enum port_event event)
  38{
  39        struct sas_ha_struct *ha = phy->ha;
  40
  41        BUG_ON(event >= PORT_NUM_EVENTS);
  42
  43        sas_queue_event(event, &ha->event_lock, &phy->port_events_pending,
  44                        &phy->port_events[event].work, ha);
  45}
  46
  47static void notify_phy_event(struct asd_sas_phy *phy, enum phy_event event)
  48{
  49        struct sas_ha_struct *ha = phy->ha;
  50
  51        BUG_ON(event >= PHY_NUM_EVENTS);
  52
  53        sas_queue_event(event, &ha->event_lock, &phy->phy_events_pending,
  54                        &phy->phy_events[event].work, ha);
  55}
  56
  57int sas_init_events(struct sas_ha_struct *sas_ha)
  58{
  59        static const work_func_t sas_ha_event_fns[HA_NUM_EVENTS] = {
  60                [HAE_RESET] = sas_hae_reset,
  61        };
  62
  63        int i;
  64
  65        spin_lock_init(&sas_ha->event_lock);
  66
  67        for (i = 0; i < HA_NUM_EVENTS; i++) {
  68                INIT_WORK(&sas_ha->ha_events[i].work, sas_ha_event_fns[i]);
  69                sas_ha->ha_events[i].ha = sas_ha;
  70        }
  71
  72        sas_ha->notify_ha_event = notify_ha_event;
  73        sas_ha->notify_port_event = notify_port_event;
  74        sas_ha->notify_phy_event = notify_phy_event;
  75
  76        return 0;
  77}
  78