a2091.h (1558B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef A2091_H 3#define A2091_H 4 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 Linux 8 * 9 * Written and (C) 1993, Hamish Macdonald, see a2091.c for more info 10 * 11 */ 12 13#include <linux/types.h> 14 15#ifndef CMD_PER_LUN 16#define CMD_PER_LUN 2 17#endif 18 19#ifndef CAN_QUEUE 20#define CAN_QUEUE 16 21#endif 22 23/* 24 * if the transfer address ANDed with this results in a non-zero 25 * 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 */