/* $OpenBSD: fdreg.h,v 1.13 2025/11/13 20:59:14 deraadt Exp $ */ /* $NetBSD: fdreg.h,v 1.8 1995/06/28 04:30:57 cgd Exp $ */ /*- * Copyright (c) 1991 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)fdreg.h 7.1 (Berkeley) 5/9/91 */ /* * AT floppy controller registers and bitfields */ /* uses NEC765 controller */ #include <dev/ic/nec765reg.h> /* registers */ #define fdout 2 /* Digital Output Register (W) */ #define FDO_FDSEL 0x03 /* floppy device select */ #define FDO_FRST 0x04 /* floppy controller reset */ #define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ #define FDO_MOEN(n) ((1 << n) * 0x10) /* motor enable */ #define fdsts 4 /* NEC 765 Main Status Register (R) */ #define fddata 5 /* NEC 765 Data Register (R/W) */ #define FDCTL_OFFSET 7 /* Offset from the other registers. */ #define fdctl 0 /* Control Register (W) */ #define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ #define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ #define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ #define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */ #define fdin 0 /* Digital Input Register (R) */ #define FDI_DCHG 0x80 /* diskette has been changed */ #define FDC_NPORT 6 #define FDCTL_NPORT 1 #define FDC_MAXIOSIZE NBPG /* XXX should be MAXBSIZE */ #define FD_BSIZE(fd) (128 << fd->sc_type->secsize) #define FDUNIT(dev) ((minor(dev) / MAXPARTITIONSUNIT) / 8) #define FDTYPE(dev) ((minor(dev) / MAXPARTITIONSUNIT) % 8) #define FDPART(dev) (minor(dev) % MAXPARTITIONSUNIT)
