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fdcvar.h revision 1.2 
      1 /*	$NetBSD: fdcvar.h,v 1.2 2003/01/08 23:51:11 jmcneill Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Charles M. Hannum.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*-
     40  * Copyright (c) 1990 The Regents of the University of California.
     41  * All rights reserved.
     42  *
     43  * This code is derived from software contributed to Berkeley by
     44  * Don Ahn.
     45  *
     46  * Redistribution and use in source and binary forms, with or without
     47  * modification, are permitted provided that the following conditions
     48  * are met:
     49  * 1. Redistributions of source code must retain the above copyright
     50  *    notice, this list of conditions and the following disclaimer.
     51  * 2. Redistributions in binary form must reproduce the above copyright
     52  *    notice, this list of conditions and the following disclaimer in the
     53  *    documentation and/or other materials provided with the distribution.
     54  * 3. All advertising materials mentioning features or use of this software
     55  *    must display the following acknowledgement:
     56  *	This product includes software developed by the University of
     57  *	California, Berkeley and its contributors.
     58  * 4. Neither the name of the University nor the names of its contributors
     59  *    may be used to endorse or promote products derived from this software
     60  *    without specific prior written permission.
     61  *
     62  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     63  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     64  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     65  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     66  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     67  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     68  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     69  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     70  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     71  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     72  * SUCH DAMAGE.
     73  *
     74  *	@(#)fd.c	7.4 (Berkeley) 5/25/91
     75  */
     76 
     77 /*
     78  * Floppy formatting facilities merged from FreeBSD fd.c driver:
     79  *	Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp
     80  * which carries the same copyright/redistribution notice as shown above with
     81  * the addition of the following statement before the "Redistribution and
     82  * use ..." clause:
     83  *
     84  * Copyright (c) 1993, 1994 by
     85  *  jc (at) irbs.UUCP (John Capo)
     86  *  vak (at) zebub.msk.su (Serge Vakulenko)
     87  *  ache (at) astral.msk.su (Andrew A. Chernov)
     88  *
     89  * Copyright (c) 1993, 1994, 1995 by
     90  *  joerg_wunsch (at) uriah.sax.de (Joerg Wunsch)
     91  *  dufault (at) hda.com (Peter Dufault)
     92  */
     93 
     94 enum fdc_state {
     95 	DEVIDLE = 0,
     96 	MOTORWAIT,
     97 	DOSEEK,
     98 	SEEKWAIT,
     99 	SEEKTIMEDOUT,
    100 	SEEKCOMPLETE,
    101 	DOIO,
    102 	IOCOMPLETE,
    103 	IOTIMEDOUT,
    104 	DORESET,
    105 	RESETCOMPLETE,
    106 	RESETTIMEDOUT,
    107 	DORECAL,
    108 	RECALWAIT,
    109 	RECALTIMEDOUT,
    110 	RECALCOMPLETE,
    111 };
    112 
    113 /* software state, per controller */
    114 struct fdc_softc {
    115 	struct device sc_dev;		/* boilerplate */
    116 	void *sc_ih;
    117 
    118 	bus_space_tag_t sc_iot;		/* ISA i/o space identifier */
    119 	bus_space_handle_t sc_ioh;	/* ISA io handle */
    120 	isa_chipset_tag_t sc_ic;	/* ISA chipset info */
    121 
    122 	struct callout sc_timo_ch;	/* timeout callout */
    123 	struct callout sc_intr_ch;	/* pseudo-intr callout */
    124 
    125 	/*
    126 	 * XXX We have port overlap with the first IDE controller.
    127 	 * Until we have a reasonable solution for handling overlap
    128 	 * like this, we kludge access to our control register at
    129 	 * offset 7.
    130 	 */
    131 	bus_space_handle_t sc_fdctlioh;
    132 #define	sc_fdinioh	sc_fdctlioh
    133 
    134 	int sc_drq;
    135 	bus_size_t sc_maxiosize;
    136 
    137 	struct fd_softc *sc_fd[4];	/* pointers to children */
    138 	TAILQ_HEAD(drivehead, fd_softc) sc_drives;
    139 	enum fdc_state sc_state;
    140 	int sc_errors;			/* number of retries so far */
    141 	u_char sc_status[7];		/* copy of registers */
    142 
    143 	int sc_known;			/* direct configuration if non-zero */
    144 	int sc_present;			/* bitmap of available fds */
    145 	const struct fd_type *sc_knownfds[4];	/* drive info known fds */
    146 };
    147 
    148 int	out_fdc __P((bus_space_tag_t iot, bus_space_handle_t ioh, u_char x));
    149 
    150 void	fdcattach __P((struct fdc_softc *));
    151 int	fdcintr __P((void *));
    152