1 #ifndef A2091_H
2 #define A2091_H
3
4 /* $Id: a2091.h,v 1.4 1997/01/19 23:07:09 davem Exp $
5 *
6 * Header file for the Commodore A2091 Zorro II SCSI controller for Linux
7 *
8 * Written and (C) 1993, Hamish Macdonald, see a2091.c for more info
9 *
10 */
11
12 #include <linux/types.h>
13
14 int a2091_detect(struct scsi_host_template *);
15 int a2091_release(struct Scsi_Host *);
16
17 #ifndef CMD_PER_LUN
18 #define CMD_PER_LUN 2
19 #endif
20
21 #ifndef CAN_QUEUE
22 #define CAN_QUEUE 16
23 #endif
24
25 /*
26 * if the transfer address ANDed with this results in a non-zero
27 * result, then we can't use DMA.
28 */
29 #define A2091_XFER_MASK (0xff000001)
30
31 typedef struct {
32 unsigned char pad1[64];
33 volatile unsigned short ISTR;
34 volatile unsigned short CNTR;
35 unsigned char pad2[60];
36 volatile unsigned int WTC;
37 volatile unsigned long ACR;
38 unsigned char pad3[6];
39 volatile unsigned short DAWR;
40 unsigned char pad4;
41 volatile unsigned char SASR;
42 unsigned char pad5;
43 volatile unsigned char SCMD;
44 unsigned char pad6[76];
45 volatile unsigned short ST_DMA;
46 volatile unsigned short SP_DMA;
47 volatile unsigned short CINT;
48 unsigned char pad7[2];
49 volatile unsigned short FLUSH;
50 } a2091_scsiregs;
51
52 #define DAWR_A2091 (3)
53
54 /* CNTR bits. */
55 #define CNTR_TCEN (1<<7)
56 #define CNTR_PREST (1<<6)
57 #define CNTR_PDMD (1<<5)
58 #define CNTR_INTEN (1<<4)
59 #define CNTR_DDIR (1<<3)
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 /* A2091_H */
73
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