71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
/* 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 */
|