linux-imx

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef A3000_H

#define A3000_H

​

/* $Id: a3000.h,v 1.4 1997/01/19 23:07:10 davem Exp $

 *

 * Header file for the Amiga 3000 built-in SCSI controller for Linux

 *

 * Written and (C) 1993, Hamish Macdonald, see a3000.c for more info

 *

 */

​

#include <linux/types.h>

​

#ifndef CMD_PER_LUN

#define CMD_PER_LUN     2

#endif

​

#ifndef CAN_QUEUE

#define CAN_QUEUE       16

#endif

​

/*

 * if the transfer address ANDed with this results in a non-zero

 * result, then we can't use DMA.

 */

#define A3000_XFER_MASK     (0x00000003)

​

struct a3000_scsiregs {

         unsigned char  pad1[2];

    volatile unsigned short DAWR;

    volatile unsigned int   WTC;

         unsigned char  pad2[2];

    volatile unsigned short CNTR;

    volatile unsigned long  ACR;

         unsigned char  pad3[2];

    volatile unsigned short ST_DMA;

         unsigned char  pad4[2];

    volatile unsigned short FLUSH;

         unsigned char  pad5[2];

    volatile unsigned short CINT;

         unsigned char  pad6[2];

    volatile unsigned short ISTR;

         unsigned char  pad7[30];

    volatile unsigned short SP_DMA;

         unsigned char  pad8;

    volatile unsigned char  SASR;

         unsigned char  pad9;

    volatile unsigned char  SCMD;

};

​

#define DAWR_A3000      (3)

​

/* CNTR bits. */

#define CNTR_TCEN       (1<<5)

#define CNTR_PREST      (1<<4)

#define CNTR_PDMD       (1<<3)

#define CNTR_INTEN      (1<<2)

#define CNTR_DDIR       (1<<1)

#define CNTR_IO_DX      (1<<0)

​

/* ISTR bits. */

#define ISTR_INTX       (1<<8)