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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 | |
28 | struct 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 |
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