/* SPDX-License-Identifier: GPL-2.0 */ #ifndef A2091_H #define A2091_H /* $Id: a2091.h,v 1.4 1997/01/19 23:07:09 davem Exp $ * * Header file for the Commodore A2091 Zorro II SCSI controller for Linux * * Written and (C) 1993, Hamish Macdonald, see a2091.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 A2091_XFER_MASK (0xff000001) struct a2091_scsiregs { unsigned char pad1[64]; volatile unsigned short ISTR; volatile unsigned short CNTR; unsigned char pad2[60]; volatile unsigned int WTC; volatile unsigned long ACR; unsigned char pad3[6]; volatile unsigned short DAWR; unsigned char pad4; volatile unsigned char SASR; unsigned char pad5; volatile unsigned char SCMD; unsigned char pad6[76]; volatile unsigned short ST_DMA; volatile unsigned short SP_DMA; volatile unsigned short CINT; unsigned char pad7[2]; volatile unsigned short FLUSH; }; #define DAWR_A2091 (3) /* CNTR bits. */ #define CNTR_TCEN (1<<7) #define CNTR_PREST (1<<6) #define CNTR_PDMD (1<<5) #define CNTR_INTEN (1<<4) #define CNTR_DDIR (1<<3) /* 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 /* A2091_H */