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