linux-imx

/*

 *  FiberChannel transport specific attributes exported to sysfs.

 *

 *  Copyright (c) 2003 Silicon Graphics, Inc.  All rights reserved.

 *

 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 *  ========

 *

 *  Copyright (C) 2004-2007   James Smart, Emulex Corporation

 *    Rewrite for host, target, device, and remote port attributes,

 *    statistics, and service functions...

 *    Add vports, etc

 *

 */

#include <linux/module.h>

#include <linux/init.h>

#include <linux/slab.h>

#include <linux/delay.h>

#include <linux/kernel.h>

#include <linux/bsg-lib.h>

#include <scsi/scsi_device.h>

#include <scsi/scsi_host.h>

#include <scsi/scsi_transport.h>

#include <scsi/scsi_transport_fc.h>

#include <scsi/scsi_cmnd.h>

#include <net/netlink.h>

#include <scsi/scsi_netlink_fc.h>

#include <scsi/scsi_bsg_fc.h>

#include "scsi_priv.h"

​

static int fc_queue_work(struct Scsi_Host *, struct work_struct *);

static void fc_vport_sched_delete(struct work_struct *work);

static int fc_vport_setup(struct Scsi_Host *shost, int channel,

    struct device *pdev, struct fc_vport_identifiers  *ids,

    struct fc_vport **vport);

static int fc_bsg_hostadd(struct Scsi_Host *, struct fc_host_attrs *);

static int fc_bsg_rportadd(struct Scsi_Host *, struct fc_rport *);

static void fc_bsg_remove(struct request_queue *);

static void fc_bsg_goose_queue(struct fc_rport *);

​

/*

 * Module Parameters

 */

​

/*

 * dev_loss_tmo: the default number of seconds that the FC transport

 *   should insulate the loss of a remote port.

 *   The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT.

 */

static unsigned int fc_dev_loss_tmo = 60;       /* seconds */

​

module_param_named(dev_loss_tmo, fc_dev_loss_tmo, uint, S_IRUGO|S_IWUSR);

MODULE_PARM_DESC(dev_loss_tmo,

         "Maximum number of seconds that the FC transport should"

         " insulate the loss of a remote port. Once this value is"

         " exceeded, the scsi target is removed. Value should be"

         " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT if"

         " fast_io_fail_tmo is not set.");

​

/*

 * Redefine so that we can have same named attributes in the

 * sdev/starget/host objects.

 */

#define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store)        \

struct device_attribute device_attr_##_prefix##_##_name =   \

    __ATTR(_name,_mode,_show,_store)

​

#define fc_enum_name_search(title, table_type, table)           \

static const char *get_fc_##title##_name(enum table_type table_key) \

{                                   \

    int i;                              \

    char *name = NULL;                      \

                                    \

    for (i = 0; i < ARRAY_SIZE(table); i++) {           \

        if (table[i].value == table_key) {          \

            name = table[i].name;               \

            break;                      \

        }                           \

    }                               \