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