linux-imx

/*

 * Target driver for EMC CLARiiON AX/CX-series hardware.

 * Based on code from Lars Marowsky-Bree <lmb@suse.de>

 * and Ed Goggin <egoggin@emc.com>.

 *

 * Copyright (C) 2006 Red Hat, Inc.  All rights reserved.

 * Copyright (C) 2006 Mike Christie

 *

 * 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, 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; see the file COPYING.  If not, write to

 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.

 */

#include <linux/slab.h>

#include <linux/module.h>

#include <scsi/scsi.h>

#include <scsi/scsi_eh.h>

#include <scsi/scsi_dh.h>

#include <scsi/scsi_device.h>

​

#define CLARIION_NAME           "emc"

​

#define CLARIION_TRESPASS_PAGE      0x22

#define CLARIION_BUFFER_SIZE        0xFC

#define CLARIION_TIMEOUT        (60 * HZ)

#define CLARIION_RETRIES        3

#define CLARIION_UNBOUND_LU     -1

#define CLARIION_SP_A           0

#define CLARIION_SP_B           1

​

/* Flags */

#define CLARIION_SHORT_TRESPASS     1

#define CLARIION_HONOR_RESERVATIONS 2

​

/* LUN states */

#define CLARIION_LUN_UNINITIALIZED  -1

#define CLARIION_LUN_UNBOUND        0

#define CLARIION_LUN_BOUND      1

#define CLARIION_LUN_OWNED      2

​

static unsigned char long_trespass[] = {

    0, 0, 0, 0, 0, 0, 0, 0,

    CLARIION_TRESPASS_PAGE, /* Page code */

    0x09,           /* Page length - 2 */

    0x01,           /* Trespass code */

    0xff, 0xff,     /* Trespass target */

    0, 0, 0, 0, 0, 0    /* Reserved bytes / unknown */

};

​

static unsigned char short_trespass[] = {

    0, 0, 0, 0,

    CLARIION_TRESPASS_PAGE, /* Page code */

    0x02,           /* Page length - 2 */

    0x01,           /* Trespass code */