/*      $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
*  [email protected] (John Capo)
*  [email protected] (Serge Vakulenko)
*  [email protected] (Andrew A. Chernov)
*
* Copyright (c) 1993, 1994, 1995 by
*  [email protected] (Joerg Wunsch)
*  [email protected] (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 *);

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