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1da177e4 LT |
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 | ||
d0be4a7d | 14 | int a2091_detect(struct scsi_host_template *); |
1da177e4 | 15 | int a2091_release(struct Scsi_Host *); |
1da177e4 LT |
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 */ |