/* 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)
#define ISTR_INT_F              (1<<7)
#define ISTR_INTS               (1<<6)
#define ISTR_E_INT              (1<<5)
#define ISTR_INT_P              (1<<4)
#define ISTR_UE_INT             (1<<3)
#define ISTR_OE_INT             (1<<2)
#define ISTR_FF_FLG             (1<<1)
#define ISTR_FE_FLG             (1<<0)

#endif /* A3000_H */