/* $NetBSD: fdreg.h,v 1.7 2011/06/30 20:09:39 wiz 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 0 /* 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 2 /* NEC 765 Main Status Register (R) */ #define FDS_DRVBUSY(n) ((1 << n) * 0x01) /* drive busy */ #define fddata 3 /* NEC 765 Data Register (R/W) */ #define fdctl 5 /* 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 5 /* Digital Input Register (R) */ #define FDI_DCHG 0x80 /* diskette has been changed */ #define FDC_BSIZE 512 /* * This constant is a little misleading. Historically, the floppy * controller is located at 0x3f0-0x3f7, but the actual registers * are 0x3f2, 0x3f3, 0x3f4, and 0x3f7. This constant assumes the * historic range, but the offsets above reflect the `real' offsets. */ #define FDC_NPORT 8 /* * Copyright (C) 1992-1994 by Joerg Wunsch, Dresden * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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. * * From: FreeBSD: Id: ioctl_fd.h,v 1.7 1994/10/30 19:17:39 joerg Exp */ #define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ /* 2.88 MB drives */ struct ne7_fd_formb { int cyl, head; int transfer_rate; /* fdreg.h: FDC_???KBPS */ union { struct fd_form_data { /* * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS * it is hardware-dependent since it exactly * matches the byte sequence to write to FDC * during its `format track' operation */ u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ u_char nsecs; /* must be <= FD_MAX_NSEC */ u_char gaplen; /* GAP 3 length; usually 84 */ u_char fillbyte; /* usually 0xf6 */ struct fd_idfield_data { /* * data to write into id fields; * for obscure formats, they mustn't match * the real values (but mostly do) */ u_char cylno; /* 0 thru 79 (or 39) */ u_char headno; /* 0, or 1 */ u_char secno; /* starting at 1! */ u_char secsize; /* usually 2 */ } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ } structured; u_char raw[1]; /* to have continuous indexed access */ } format_info; }; /* make life easier */ # define fd_formb_secshift format_info.structured.secshift # define fd_formb_nsecs format_info.structured.nsecs # define fd_formb_gaplen format_info.structured.gaplen # define fd_formb_fillbyte format_info.structured.fillbyte /* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ # define fd_formb_cylno(i) format_info.structured.idfields[i].cylno # define fd_formb_headno(i) format_info.structured.idfields[i].headno # define fd_formb_secno(i) format_info.structured.idfields[i].secno # define fd_formb_secsize(i) format_info.structured.idfields[i].secsize
