/*      $NetBSD: fdcvar.h,v 1.6 2008/07/05 08:46:25 tsutsui Exp $       */

/*-
 * Copyright (c) 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Charles M. Hannum.
 *
 * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Don Ahn.
 *
 * 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.
 *
 *      @(#)fd.c        7.4 (Berkeley) 5/25/91
 */

/*
 * Floppy formatting facilities merged from FreeBSD fd.c driver:
 *      Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp
 * which carries the same copyright/redistribution notice as shown above with
 * the addition of the following statement before the "Redistribution and
 * use ..." clause:
 *
 * Copyright (c) 1993, 1994 by
 *  jc@irbs.UUCP (John Capo)
 *  vak@zebub.msk.su (Serge Vakulenko)
 *  ache@astral.msk.su (Andrew A. Chernov)
 *
 * Copyright (c) 1993, 1994, 1995 by
 *  joerg_wunsch@uriah.sax.de (Joerg Wunsch)
 *  dufault@hda.com (Peter Dufault)
 */

enum fdc_state {
        DEVIDLE = 0,
        MOTORWAIT,
        DOSEEK,
        SEEKWAIT,
        SEEKTIMEDOUT,
        SEEKCOMPLETE,
        DOIO,
        IOCOMPLETE,
        IOTIMEDOUT,
        DORESET,
        RESETCOMPLETE,
        RESETTIMEDOUT,
        DORECAL,
        RECALWAIT,
        RECALTIMEDOUT,
        RECALCOMPLETE,
};

/* software state, per controller */
struct fdc_softc {
        device_t sc_dev;                /* boilerplate */
        void *sc_ih;

        bus_space_tag_t sc_iot;         /* I/O space identifier */
        bus_space_handle_t sc_ioh;      /* I/O handle */

        struct callout sc_timo_ch;      /* timeout callout */
        struct callout sc_intr_ch;      /* pseudo-intr callout */

        bus_size_t sc_maxiosize;

        struct fd_softc *sc_fd[4];      /* pointers to children */
        TAILQ_HEAD(drivehead, fd_softc) sc_drives;
        enum fdc_state sc_state;
        int sc_errors;                  /* number of retries so far */
        u_char sc_status[7];            /* copy of registers */

        /* DMA functions set from MD code */
        void (*sc_dma_start)(struct fdc_softc *, void *, size_t, int);
        void (*sc_dma_abort)(struct fdc_softc *);
        void (*sc_dma_done)(struct fdc_softc *);
};

#define FDCDMA_START(fdc, addr, len, datain)    \
    (*(fdc)->sc_dma_start)(fdc, addr, len, datain)
#define FDCDMA_ABORT(fdc)       (*(fdc)->sc_dma_abort)(fdc)
#define FDCDMA_DONE(fdc)        (*(fdc)->sc_dma_done)(fdc)

int out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x);

void fdcattach(struct fdc_softc *);
int fdcintr(void *);