drivers/scsi/a3000.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef A3000_H
0003 #define A3000_H
0004
0005 /* $Id: a3000.h,v 1.4 1997/01/19 23:07:10 davem Exp $
0006  *
0007  * Header file for the Amiga 3000 built-in SCSI controller for Linux
0008  *
0009  * Written and (C) 1993, Hamish Macdonald, see a3000.c for more info
0010  *
0011  */
0012
0013 #include <linux/types.h>
0014
0015 #ifndef CMD_PER_LUN
0016 #define CMD_PER_LUN     2
0017 #endif
0018
0019 #ifndef CAN_QUEUE
0020 #define CAN_QUEUE       16
0021 #endif
0022
0023 /*
0024  * if the transfer address ANDed with this results in a non-zero
0025  * result, then we can't use DMA.
0026  */
0027 #define A3000_XFER_MASK     (0x00000003)
0028
0029 struct a3000_scsiregs {
0030          unsigned char  pad1[2];
0031     volatile unsigned short DAWR;
0032     volatile unsigned int   WTC;
0033          unsigned char  pad2[2];
0034     volatile unsigned short CNTR;
0035     volatile unsigned long  ACR;
0036          unsigned char  pad3[2];
0037     volatile unsigned short ST_DMA;
0038          unsigned char  pad4[2];
0039     volatile unsigned short FLUSH;
0040          unsigned char  pad5[2];
0041     volatile unsigned short CINT;
0042          unsigned char  pad6[2];
0043     volatile unsigned short ISTR;
0044          unsigned char  pad7[30];
0045     volatile unsigned short SP_DMA;
0046          unsigned char  pad8;
0047     volatile unsigned char  SASR;
0048          unsigned char  pad9;
0049     volatile unsigned char  SCMD;
0050 };
0051
0052 #define DAWR_A3000      (3)
0053
0054 /* CNTR bits. */
0055 #define CNTR_TCEN       (1<<5)
0056 #define CNTR_PREST      (1<<4)
0057 #define CNTR_PDMD       (1<<3)
0058 #define CNTR_INTEN      (1<<2)
0059 #define CNTR_DDIR       (1<<1)
0060 #define CNTR_IO_DX      (1<<0)
0061
0062 /* ISTR bits. */
0063 #define ISTR_INTX       (1<<8)
0064 #define ISTR_INT_F      (1<<7)
0065 #define ISTR_INTS       (1<<6)
0066 #define ISTR_E_INT      (1<<5)
0067 #define ISTR_INT_P      (1<<4)
0068 #define ISTR_UE_INT     (1<<3)
0069 #define ISTR_OE_INT     (1<<2)
0070 #define ISTR_FF_FLG     (1<<1)
0071 #define ISTR_FE_FLG     (1<<0)
0072
0073 #endif /* A3000_H */