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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _LINUX_AMIFDREG_H
2#define _LINUX_AMIFDREG_H
3
4/*
5** CIAAPRA bits (read only)
6*/
7
8#define DSKRDY (0x1<<5) /* disk ready when low */
9#define DSKTRACK0 (0x1<<4) /* head at track zero when low */
10#define DSKPROT (0x1<<3) /* disk protected when low */
11#define DSKCHANGE (0x1<<2) /* low when disk removed */
12
13/*
14** CIAAPRB bits (read/write)
15*/
16
17#define DSKMOTOR (0x1<<7) /* motor on when low */
18#define DSKSEL3 (0x1<<6) /* select drive 3 when low */
19#define DSKSEL2 (0x1<<5) /* select drive 2 when low */
20#define DSKSEL1 (0x1<<4) /* select drive 1 when low */
21#define DSKSEL0 (0x1<<3) /* select drive 0 when low */
22#define DSKSIDE (0x1<<2) /* side selection: 0 = upper, 1 = lower */
23#define DSKDIREC (0x1<<1) /* step direction: 0=in, 1=out (to trk 0) */
24#define DSKSTEP (0x1) /* pulse low to step head 1 track */
25
26/*
27** DSKBYTR bits (read only)
28*/
29
30#define DSKBYT (1<<15) /* register contains valid byte when set */
31#define DMAON (1<<14) /* disk DMA enabled */
32#define DISKWRITE (1<<13) /* disk write bit in DSKLEN enabled */
33#define WORDEQUAL (1<<12) /* DSKSYNC register match when true */
34/* bits 7-0 are data */
35
36/*
37** ADKCON/ADKCONR bits
38*/
39
40#ifndef SETCLR
41#define ADK_SETCLR (1<<15) /* control bit */
42#endif
43#define ADK_PRECOMP1 (1<<14) /* precompensation selection */
44#define ADK_PRECOMP0 (1<<13) /* 00=none, 01=140ns, 10=280ns, 11=500ns */
45#define ADK_MFMPREC (1<<12) /* 0=GCR precomp., 1=MFM precomp. */
46#define ADK_WORDSYNC (1<<10) /* enable DSKSYNC auto DMA */
47#define ADK_MSBSYNC (1<<9) /* when 1, enable sync on MSbit (for GCR) */
48#define ADK_FAST (1<<8) /* bit cell: 0=2us (GCR), 1=1us (MFM) */
49
50/*
51** DSKLEN bits
52*/
53
54#define DSKLEN_DMAEN (1<<15)
55#define DSKLEN_WRITE (1<<14)
56
57/*
58** INTENA/INTREQ bits
59*/
60
61#define DSKINDEX (0x1<<4) /* DSKINDEX bit */
62
63/*
64** Misc
65*/
66
67#define MFM_SYNC 0x4489 /* standard MFM sync value */
68
69/* Values for FD_COMMAND */
70#define FD_RECALIBRATE 0x07 /* move to track 0 */
71#define FD_SEEK 0x0F /* seek track */
72#define FD_READ 0xE6 /* read with MT, MFM, SKip deleted */
73#define FD_WRITE 0xC5 /* write with MT, MFM */
74#define FD_SENSEI 0x08 /* Sense Interrupt Status */
75#define FD_SPECIFY 0x03 /* specify HUT etc */
76#define FD_FORMAT 0x4D /* format one track */
77#define FD_VERSION 0x10 /* get version code */
78#define FD_CONFIGURE 0x13 /* configure FIFO operation */
79#define FD_PERPENDICULAR 0x12 /* perpendicular r/w mode */
80
81#endif /* _LINUX_AMIFDREG_H */