linux-imx

/*

 *

 *          Linux MegaRAID device driver

 *

 * Copyright (c) 2003-2004  LSI Logic Corporation.

 *

 *     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.

 *

 * FILE     : mega_common.h

 *

 * Libaray of common routine used by all low-level megaraid drivers

 */

​

#ifndef _MEGA_COMMON_H_

#define _MEGA_COMMON_H_

​

#include <linux/kernel.h>

#include <linux/types.h>

#include <linux/pci.h>

#include <linux/spinlock.h>

#include <linux/mutex.h>

#include <linux/interrupt.h>

#include <linux/delay.h>

#include <linux/blkdev.h>

#include <linux/list.h>

#include <linux/moduleparam.h>

#include <linux/dma-mapping.h>

#include <scsi/scsi.h>

#include <scsi/scsi_cmnd.h>

#include <scsi/scsi_device.h>

#include <scsi/scsi_host.h>

​

​

#define LSI_MAX_CHANNELS        16

#define LSI_MAX_LOGICAL_DRIVES_64LD (64+1)

​

#define HBA_SIGNATURE_64_BIT        0x299

#define PCI_CONF_AMISIG64       0xa4

​

#define MEGA_SCSI_INQ_EVPD      1

#define MEGA_INVALID_FIELD_IN_CDB   0x24

​

​

/**

 * scb_t - scsi command control block

 * @ccb         : command control block for individual driver

 * @list        : list of control blocks

 * @gp          : general purpose field for LLDs

 * @sno         : all SCBs have a serial number

 * @scp         : associated scsi command

 * @state       : current state of scb

 * @dma_dir     : direction of data transfer

 * @dma_type        : transfer with sg list, buffer, or no data transfer

 * @dev_channel     : actual channel on the device

 * @dev_target      : actual target on the device

 * @status      : completion status

 *

 * This is our central data structure to issue commands the each driver.

 * Driver specific data structures are maintained in the ccb field.

 * scb provides a field 'gp', which can be used by LLD for its own purposes