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a2091.h
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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 #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 A2091_XFER_MASK (0xff000001)
27 
29  unsigned char pad1[64];
30  volatile unsigned short ISTR;
31  volatile unsigned short CNTR;
32  unsigned char pad2[60];
33  volatile unsigned int WTC;
34  volatile unsigned long ACR;
35  unsigned char pad3[6];
36  volatile unsigned short DAWR;
37  unsigned char pad4;
38  volatile unsigned char SASR;
39  unsigned char pad5;
40  volatile unsigned char SCMD;
41  unsigned char pad6[76];
42  volatile unsigned short ST_DMA;
43  volatile unsigned short SP_DMA;
44  volatile unsigned short CINT;
45  unsigned char pad7[2];
46  volatile unsigned short FLUSH;
47 };
48 
49 #define DAWR_A2091 (3)
50 
51 /* CNTR bits. */
52 #define CNTR_TCEN (1<<7)
53 #define CNTR_PREST (1<<6)
54 #define CNTR_PDMD (1<<5)
55 #define CNTR_INTEN (1<<4)
56 #define CNTR_DDIR (1<<3)
57 
58 /* ISTR bits. */
59 #define ISTR_INTX (1<<8)
60 #define ISTR_INT_F (1<<7)
61 #define ISTR_INTS (1<<6)
62 #define ISTR_E_INT (1<<5)
63 #define ISTR_INT_P (1<<4)
64 #define ISTR_UE_INT (1<<3)
65 #define ISTR_OE_INT (1<<2)
66 #define ISTR_FF_FLG (1<<1)
67 #define ISTR_FE_FLG (1<<0)
68 
69 #endif /* A2091_H */