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hdfdreg.h revision 1.1 
      1 /*	$NetBSD: hdfdreg.h,v 1.1 1996/11/09 22:27:26 leo Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1991 The Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  *	@(#)fdreg.h	7.1 (Berkeley) 5/9/91
     36  */
     37 
     38 /*
     39  * AT floppy controller registers and bitfields
     40  */
     41 
     42 /* uses NEC765 controller */
     43 #include <dev/ic/nec765reg.h>
     44 
     45 /*
     46  * The FDC in the Hades does not like multi-track mode!
     47  */
     48 #undef NE7CMD_WRITE
     49 #undef NE7CMD_READ
     50 #define NE7CMD_WRITE		0x45
     51 #define NE7CMD_READ		0x66
     52 
     53 #define NE7CMD_CONFIGURE	0x13
     54 #define NE7CMD_LOCK		0x94
     55 
     56 /* registers */
     57 #define	fdout	0xc0	/* Digital Output Register (W) */
     58 #define	FDO_FDSEL	0x03	/*  floppy device select */
     59 #define	FDO_FRST	0x04	/*  floppy controller reset */
     60 #define	FDO_FDMAEN	0x08	/*  enable floppy DMA and Interrupt */
     61 #define	FDO_MOEN(n)	((1 << n) * 0x10)	/* motor enable */
     62 
     63 #define	fdsts	0x80	/* NEC 765 Main Status Register (R) */
     64 #define	fddata	0x82	/* NEC 765 Data Register (R/W) */
     65 
     66 #define	fdctl	0xe0	/* Control Register (W) */
     67 #define	FDC_500KBPS	0x00	/* 500KBPS MFM drive transfer rate */
     68 #define	FDC_300KBPS	0x01	/* 300KBPS MFM drive transfer rate */
     69 #define	FDC_250KBPS	0x02	/* 250KBPS MFM drive transfer rate */
     70 #define	FDC_125KBPS	0x03	/* 125KBPS FM drive transfer rate */
     71 
     72 #define	fdin	0xe0	/* Digital Input Register (R) */
     73 #define	FDI_DCHG	0x80	/* diskette has been changed */
     74 
     75 #define	FDC_BSIZE	512
     76 #define	FDC_NPORT	8
     77 #define	FDC_MAXIOSIZE	NBPG	/* XXX should be MAXBSIZE */
     78