1 /* $OpenBSD: fdreg.h,v 1.9 1996/12/05 13:13:21 deraadt Exp $ */ 2 /* $NetBSD: fdreg.h,v 1.8 1995/06/28 04:30:57 cgd Exp $ */ 3 4 /*- 5 * Copyright (c) 1991 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)fdreg.h 7.1 (Berkeley) 5/9/91 37 */ 38 39 /* 40 * AT floppy controller registers and bitfields 41 */ 42 43 /* uses NEC765 controller */ 44 #include <dev/ic/nec765reg.h> 45 46 /* registers */ 47 #define fdout 2 /* Digital Output Register (W) */ 48 #define FDO_FDSEL 0x03 /* floppy device select */ 49 #define FDO_FRST 0x04 /* floppy controller reset */ 50 #define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ 51 #define FDO_MOEN(n) ((1 << n) * 0x10) /* motor enable */ 52 53 #define fdsts 4 /* NEC 765 Main Status Register (R) */ 54 #define fddata 5 /* NEC 765 Data Register (R/W) */ 55 56 #define fdctl 7 /* Control Register (W) */ 57 #define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ 58 #define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ 59 #define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ 60 #define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */ 61 62 #define fdin 7 /* Digital Input Register (R) */ 63 #define FDI_DCHG 0x80 /* diskette has been changed */ 64 65 #define FDC_BSIZE 512 66 #define FDC_NPORT 8 67 #define FDC_MAXIOSIZE NBPG /* XXX should be MAXBSIZE */ 68 69 #define FDUNIT(dev) ((dev & 0x80) >> 7) /* XXX two drives max, sorry */ 70 #define FDTYPE(dev) ((minor(dev) & 0x70) >> 4) 71 #define FDPART(dev) (minor(dev) & 0x0f) 72