a3000.h

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#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 */