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fdreg.h revision 1.2.42.2 
      1 /*	$NetBSD: fdreg.h,v 1.2.42.2 2004/09/18 14:42:24 skrll 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  *	@(#)fdreg.h	7.1 (Berkeley) 5/9/91
     32  */
     33 
     34 /*
     35  * x680x0 floppy controller registers and bitfields
     36  */
     37 
     38 /* uses NEC72065 controller */
     39 #include <dev/ic/nec765reg.h>
     40 
     41 /* registers */
     42 #define	fdsts	0	/* NEC 765 Main Status Register (R) */
     43 #define	fddata	1	/* NEC 765 Data Register (R/W) */
     44 #define fdout	2	/* Digital Output Register (W) */
     45 #define	fdctl	3	/* Control Register (W) */
     46 #define	FDC_500KBPS	0x00	/* 500KBPS MFM drive transfer rate */
     47 #define	FDC_300KBPS	0x01	/* 300KBPS MFM drive transfer rate */
     48 #define	FDC_250KBPS	0x02	/* 250KBPS MFM drive transfer rate */
     49 #define	FDC_125KBPS	0x03	/* 125KBPS FM drive transfer rate */
     50 
     51 #define	FDC_BSIZE	512
     52 #define	FDC_MAXIOSIZE	MAXBSIZE
     53 
     54 /* Floppy disk controller command bytes. */
     55 #define NE7CMD_RESET       0x36	/* reset command for fdc */
     56 
     57 /* default attach args */
     58 #define FDC_ADDR 0xe94000	/* builtin fdc is here */
     59 #define FDC_INTR 96		/* interrupt vector */
     60 #define FDC_DMA 0		/* DMA ch# */
     61 #define FDC_DMAINTR 100		/* DMA interrupt vector */
     62