#ifndef _LINUX_AMIFDREG_H#define _LINUX_AMIFDREG_H /*** CIAAPRA bits (read only)*/ #define DSKRDY      (0x1<<5)        /* disk ready when low */#define DSKTRACK0   (0x1<<4)        /* head at track zero when low */#define DSKPROT     (0x1<<3)        /* disk protected when low */#define DSKCHANGE   (0x1<<2)        /* low when disk removed */ /*** CIAAPRB bits (read/write)*/ #define DSKMOTOR    (0x1<<7)        /* motor on when low */#define DSKSEL3     (0x1<<6)        /* select drive 3 when low */#define DSKSEL2     (0x1<<5)        /* select drive 2 when low */#define DSKSEL1     (0x1<<4)        /* select drive 1 when low */#define DSKSEL0     (0x1<<3)        /* select drive 0 when low */#define DSKSIDE     (0x1<<2)        /* side selection: 0 = upper, 1 = lower */#define DSKDIREC    (0x1<<1)        /* step direction: 0=in, 1=out (to trk 0) */#define DSKSTEP     (0x1)           /* pulse low to step head 1 track */ /*** DSKBYTR bits (read only)*/ #define DSKBYT      (1<<15)         /* register contains valid byte when set */#define DMAON       (1<<14)         /* disk DMA enabled */#define DISKWRITE   (1<<13)         /* disk write bit in DSKLEN enabled */#define WORDEQUAL   (1<<12)         /* DSKSYNC register match when true *//* bits 7-0 are data */ /*** ADKCON/ADKCONR bits*/ #ifndef SETCLR#define ADK_SETCLR      (1<<15)     /* control bit */#endif#define ADK_PRECOMP1    (1<<14)     /* precompensation selection */#define ADK_PRECOMP0    (1<<13)     /* 00=none, 01=140ns, 10=280ns, 11=500ns */#define ADK_MFMPREC     (1<<12)     /* 0=GCR precomp., 1=MFM precomp. */#define ADK_WORDSYNC    (1<<10)     /* enable DSKSYNC auto DMA */#define ADK_MSBSYNC     (1<<9)      /* when 1, enable sync on MSbit (for GCR) */#define ADK_FAST        (1<<8)      /* bit cell: 0=2us (GCR), 1=1us (MFM) */ /*** DSKLEN bits*/ #define DSKLEN_DMAEN    (1<<15)#define DSKLEN_WRITE    (1<<14) /*** INTENA/INTREQ bits*/ #define DSKINDEX    (0x1<<4)        /* DSKINDEX bit */ /*** Misc*/ #define MFM_SYNC    0x4489          /* standard MFM sync value */ /* Values for FD_COMMAND */#define FD_RECALIBRATE		0x07	/* move to track 0 */#define FD_SEEK			0x0F	/* seek track */#define FD_READ			0xE6	/* read with MT, MFM, SKip deleted */#define FD_WRITE		0xC5	/* write with MT, MFM */#define FD_SENSEI		0x08	/* Sense Interrupt Status */#define FD_SPECIFY		0x03	/* specify HUT etc */#define FD_FORMAT		0x4D	/* format one track */#define FD_VERSION		0x10	/* get version code */#define FD_CONFIGURE		0x13	/* configure FIFO operation */#define FD_PERPENDICULAR	0x12	/* perpendicular r/w mode */ #endif /* _LINUX_AMIFDREG_H */