linux-imx

/*******************************************************************************

 * IBM Virtual SCSI Target Driver

 * Copyright (C) 2003-2005 Dave Boutcher (boutcher@us.ibm.com) IBM Corp.

 *             Santiago Leon (santil@us.ibm.com) IBM Corp.

 *             Linda Xie (lxie@us.ibm.com) IBM Corp.

 *

 * Copyright (C) 2005-2011 FUJITA Tomonori <tomof@acm.org>

 * Copyright (C) 2010 Nicholas A. Bellinger <nab@kernel.org>

 * Copyright (C) 2016 Bryant G. Ly <bryantly@linux.vnet.ibm.com> IBM Corp.

 *

 * Authors: Bryant G. Ly <bryantly@linux.vnet.ibm.com>

 * Authors: Michael Cyr <mikecyr@linux.vnet.ibm.com>

 *

 * 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.

 *

 ****************************************************************************/

​

#ifndef __H_IBMVSCSI_TGT

#define __H_IBMVSCSI_TGT

​

#include <linux/interrupt.h>

#include "libsrp.h"

​

#define SYS_ID_NAME_LEN     64

#define PARTITION_NAMELEN   96

#define IBMVSCSIS_NAMELEN       32

​

#define MSG_HI  0

#define MSG_LOW 1

​

#define MAX_CMD_Q_PAGES       4

#define CRQ_PER_PAGE          (PAGE_SIZE / sizeof(struct viosrp_crq))

/* in terms of number of elements */

#define DEFAULT_CMD_Q_SIZE    CRQ_PER_PAGE

#define MAX_CMD_Q_SIZE        (DEFAULT_CMD_Q_SIZE * MAX_CMD_Q_PAGES)

​

#define SRP_VIOLATION           0x102  /* general error code */

​

/*

 * SRP buffer formats defined as of 16.a supported by this driver.

 */

#define SUPPORTED_FORMATS  ((SRP_DATA_DESC_DIRECT << 1) | \

                (SRP_DATA_DESC_INDIRECT << 1))

​

#define SCSI_LUN_ADDR_METHOD_FLAT   1

​

struct dma_window {

    u32 liobn;  /* Unique per vdevice */

    u64 tce_base;   /* Physical location of the TCE table */

    u64 tce_size;   /* Size of the TCE table in bytes */

};

​

struct target_dds {

    u64 unit_id;                /* 64 bit will force alignment */

#define NUM_DMA_WINDOWS 2