1 /* SPDX-License-Identifier: GPL-2.0 */
5 /* $Id: a3000.h,v 1.4 1997/01/19 23:07:10 davem Exp $
7 * Header file for the Amiga 3000 built-in SCSI controller for Linux
9 * Written and (C) 1993, Hamish Macdonald, see a3000.c for more info
13 #include <linux/types.h>
24 * if the transfer address ANDed with this results in a non-zero
25 * result, then we can't use DMA.
27 #define A3000_XFER_MASK (0x00000003)
29 struct a3000_scsiregs {
30 unsigned char pad1[2];
31 volatile unsigned short DAWR;
32 volatile unsigned int WTC;
33 unsigned char pad2[2];
34 volatile unsigned short CNTR;
35 volatile unsigned long ACR;
36 unsigned char pad3[2];
37 volatile unsigned short ST_DMA;
38 unsigned char pad4[2];
39 volatile unsigned short FLUSH;
40 unsigned char pad5[2];
41 volatile unsigned short CINT;
42 unsigned char pad6[2];
43 volatile unsigned short ISTR;
44 unsigned char pad7[30];
45 volatile unsigned short SP_DMA;
47 volatile unsigned char SASR;
49 volatile unsigned char SCMD;
52 #define DAWR_A3000 (3)
55 #define CNTR_TCEN (1<<5)
56 #define CNTR_PREST (1<<4)
57 #define CNTR_PDMD (1<<3)
58 #define CNTR_INTEN (1<<2)
59 #define CNTR_DDIR (1<<1)
60 #define CNTR_IO_DX (1<<0)
63 #define ISTR_INTX (1<<8)
64 #define ISTR_INT_F (1<<7)
65 #define ISTR_INTS (1<<6)
66 #define ISTR_E_INT (1<<5)
67 #define ISTR_INT_P (1<<4)
68 #define ISTR_UE_INT (1<<3)
69 #define ISTR_OE_INT (1<<2)
70 #define ISTR_FF_FLG (1<<1)
71 #define ISTR_FE_FLG (1<<0)