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-rw-r--r--include/linux/amifdreg.h81
1 files changed, 81 insertions, 0 deletions
diff --git a/include/linux/amifdreg.h b/include/linux/amifdreg.h
new file mode 100644
index 0000000..76188bf
--- /dev/null
+++ b/include/linux/amifdreg.h
@@ -0,0 +1,81 @@
+#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 */
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