sys/arch/x68k/dev/fdreg.h

   1 /*      $NetBSD: fdreg.h,v 1.2.42.3 2004/09/21 13:24:08 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 */