1 #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 */ 82