1#ifndef A3000_H
2#define A3000_H
3
4/* $Id: a3000.h,v 1.4 1997/01/19 23:07:10 davem Exp $
5 *
6 * Header file for the Amiga 3000 built-in SCSI controller for Linux
7 *
8 * Written and (C) 1993, Hamish Macdonald, see a3000.c for more info
9 *
10 */
11
12#include <linux/types.h>
13
14#ifndef CMD_PER_LUN
15#define CMD_PER_LUN		2
16#endif
17
18#ifndef CAN_QUEUE
19#define CAN_QUEUE		16
20#endif
21
22/*
23 * if the transfer address ANDed with this results in a non-zero
24 * result, then we can't use DMA.
25 */
26#define A3000_XFER_MASK		(0x00000003)
27
28struct a3000_scsiregs {
29		 unsigned char	pad1[2];
30	volatile unsigned short	DAWR;
31	volatile unsigned int	WTC;
32		 unsigned char	pad2[2];
33	volatile unsigned short	CNTR;
34	volatile unsigned long	ACR;
35		 unsigned char	pad3[2];
36	volatile unsigned short	ST_DMA;
37		 unsigned char	pad4[2];
38	volatile unsigned short	FLUSH;
39		 unsigned char	pad5[2];
40	volatile unsigned short	CINT;
41		 unsigned char	pad6[2];
42	volatile unsigned short	ISTR;
43		 unsigned char	pad7[30];
44	volatile unsigned short	SP_DMA;
45		 unsigned char	pad8;
46	volatile unsigned char	SASR;
47		 unsigned char	pad9;
48	volatile unsigned char	SCMD;
49};
50
51#define DAWR_A3000		(3)
52
53/* CNTR bits. */
54#define CNTR_TCEN		(1<<5)
55#define CNTR_PREST		(1<<4)
56#define CNTR_PDMD		(1<<3)
57#define CNTR_INTEN		(1<<2)
58#define CNTR_DDIR		(1<<1)
59#define CNTR_IO_DX		(1<<0)
60
61/* ISTR bits. */
62#define ISTR_INTX		(1<<8)
63#define ISTR_INT_F		(1<<7)
64#define ISTR_INTS		(1<<6)
65#define ISTR_E_INT		(1<<5)
66#define ISTR_INT_P		(1<<4)
67#define ISTR_UE_INT		(1<<3)
68#define ISTR_OE_INT		(1<<2)
69#define ISTR_FF_FLG		(1<<1)
70#define ISTR_FE_FLG		(1<<0)
71
72#endif /* A3000_H */
73