drivers/scsi/libsas/sas_event.c

   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
  29 static 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
  37 static 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
  47 static 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
  57 int 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 }