712326ecbd
but the registers actually begin at 0x3f2, and this is what PNPBIOS reports for the floppy controller resources. Adjust the register offsets and the mapping of them for the ISA front-end to compensate, so that the PNPBIOS attachment of the floppy controller actually works.
148 lines
6.1 KiB
C
148 lines
6.1 KiB
C
/* $NetBSD: fdreg.h,v 1.2 2000/05/02 03:33:45 thorpej Exp $ */
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/*-
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)fdreg.h 7.1 (Berkeley) 5/9/91
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*/
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/*
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* AT floppy controller registers and bitfields
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*/
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/* uses NEC765 controller */
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#include <dev/ic/nec765reg.h>
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/* registers */
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#define fdout 0 /* Digital Output Register (W) */
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#define FDO_FDSEL 0x03 /* floppy device select */
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#define FDO_FRST 0x04 /* floppy controller reset */
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#define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */
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#define FDO_MOEN(n) ((1 << n) * 0x10) /* motor enable */
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#define fdsts 2 /* NEC 765 Main Status Register (R) */
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#define fddata 3 /* NEC 765 Data Register (R/W) */
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#define fdctl 5 /* Control Register (W) */
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#define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */
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#define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */
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#define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */
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#define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */
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#define fdin 5 /* Digital Input Register (R) */
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#define FDI_DCHG 0x80 /* diskette has been changed */
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#define FDC_BSIZE 512
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/*
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* This constant is a little misleading. Historically, the floppy
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* controller is located at 0x3f0-0x3f7, but the actual registers
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* are 0x3f2, 0x3f3, 0x3f4, and 0x3f7. This constant assumes the
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* historic range, but the offsets above reflect the `real' offsets.
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*/
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#define FDC_NPORT 8
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/*
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* Copyright (C) 1992-1994 by Joerg Wunsch, Dresden
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* From: FreeBSD: Id: ioctl_fd.h,v 1.7 1994/10/30 19:17:39 joerg Exp
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*/
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#define FD_MAX_NSEC 36 /* highest known number of spt - allow for */
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/* 2.88 MB drives */
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struct ne7_fd_formb {
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int cyl, head;
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int transfer_rate; /* fdreg.h: FDC_???KBPS */
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union {
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struct fd_form_data {
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/*
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* DO NOT CHANGE THE LAYOUT OF THIS STRUCTS
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* it is hardware-dependant since it exactly
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* matches the byte sequence to write to FDC
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* during its `format track' operation
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*/
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u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */
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u_char nsecs; /* must be <= FD_MAX_NSEC */
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u_char gaplen; /* GAP 3 length; usually 84 */
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u_char fillbyte; /* usually 0xf6 */
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struct fd_idfield_data {
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/*
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* data to write into id fields;
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* for obscure formats, they mustn't match
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* the real values (but mostly do)
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*/
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u_char cylno; /* 0 thru 79 (or 39) */
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u_char headno; /* 0, or 1 */
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u_char secno; /* starting at 1! */
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u_char secsize; /* usually 2 */
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} idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */
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} structured;
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u_char raw[1]; /* to have continuous indexed access */
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} format_info;
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};
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/* make life easier */
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# define fd_formb_secshift format_info.structured.secshift
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# define fd_formb_nsecs format_info.structured.nsecs
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# define fd_formb_gaplen format_info.structured.gaplen
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# define fd_formb_fillbyte format_info.structured.fillbyte
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/* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */
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# define fd_formb_cylno(i) format_info.structured.idfields[i].cylno
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# define fd_formb_headno(i) format_info.structured.idfields[i].headno
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# define fd_formb_secno(i) format_info.structured.idfields[i].secno
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# define fd_formb_secsize(i) format_info.structured.idfields[i].secsize
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