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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef A2091_H3#define A2091_H4 5/* $Id: a2091.h,v 1.4 1997/01/19 23:07:09 davem Exp $6 *7 * Header file for the Commodore A2091 Zorro II SCSI controller for Linux8 *9 * Written and (C) 1993, Hamish Macdonald, see a2091.c for more info10 *11 */12 13#include <linux/types.h>14 15#ifndef CMD_PER_LUN16#define CMD_PER_LUN 217#endif18 19#ifndef CAN_QUEUE20#define CAN_QUEUE 1621#endif22 23/*24 * if the transfer address ANDed with this results in a non-zero25 * result, then we can't use DMA.26 */27#define A2091_XFER_MASK (0xff000001)28 29struct a2091_scsiregs {30 unsigned char pad1[64];31 volatile unsigned short ISTR;32 volatile unsigned short CNTR;33 unsigned char pad2[60];34 volatile unsigned int WTC;35 volatile unsigned long ACR;36 unsigned char pad3[6];37 volatile unsigned short DAWR;38 unsigned char pad4;39 volatile unsigned char SASR;40 unsigned char pad5;41 volatile unsigned char SCMD;42 unsigned char pad6[76];43 volatile unsigned short ST_DMA;44 volatile unsigned short SP_DMA;45 volatile unsigned short CINT;46 unsigned char pad7[2];47 volatile unsigned short FLUSH;48};49 50#define DAWR_A2091 (3)51 52/* CNTR bits. */53#define CNTR_TCEN (1<<7)54#define CNTR_PREST (1<<6)55#define CNTR_PDMD (1<<5)56#define CNTR_INTEN (1<<4)57#define CNTR_DDIR (1<<3)58 59/* ISTR bits. */60#define ISTR_INTX (1<<8)61#define ISTR_INT_F (1<<7)62#define ISTR_INTS (1<<6)63#define ISTR_E_INT (1<<5)64#define ISTR_INT_P (1<<4)65#define ISTR_UE_INT (1<<3)66#define ISTR_OE_INT (1<<2)67#define ISTR_FF_FLG (1<<1)68#define ISTR_FE_FLG (1<<0)69 70#endif /* A2091_H */71