sys/arch/arc/jazz/fdcvar.h

   1 /*      $NetBSD: fdcvar.h,v 1.5 2008/04/28 20:23:13 martin 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  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*-
  33  * Copyright (c) 1990 The Regents of the University of California.
  34  * All rights reserved.
  35  *
  36  * This code is derived from software contributed to Berkeley by
  37  * Don Ahn.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  * 1. Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  * 2. Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in the
  46  *    documentation and/or other materials provided with the distribution.
  47  * 3. Neither the name of the University nor the names of its contributors
  48  *    may be used to endorse or promote products derived from this software
  49  *    without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  52  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  53  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  54  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  55  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  56  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  57  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  58  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  59  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  60  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  61  * SUCH DAMAGE.
  62  *
  63  *      @(#)fd.c        7.4 (Berkeley) 5/25/91
  64  */
  65
  66 /*
  67  * Floppy formatting facilities merged from FreeBSD fd.c driver:
  68  *      Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp
  69  * which carries the same copyright/redistribution notice as shown above with
  70  * the addition of the following statement before the "Redistribution and
  71  * use ..." clause:
  72  *
  73  * Copyright (c) 1993, 1994 by
  74  *  jc@irbs.UUCP (John Capo)
  75  *  vak@zebub.msk.su (Serge Vakulenko)
  76  *  ache@astral.msk.su (Andrew A. Chernov)
  77  *
  78  * Copyright (c) 1993, 1994, 1995 by
  79  *  joerg_wunsch@uriah.sax.de (Joerg Wunsch)
  80  *  dufault@hda.com (Peter Dufault)
  81  */
  82
  83 enum fdc_state {
  84         DEVIDLE = 0,
  85         MOTORWAIT,
  86         DOSEEK,
  87         SEEKWAIT,
  88         SEEKTIMEDOUT,
  89         SEEKCOMPLETE,
  90         DOIO,
  91         IOCOMPLETE,
  92         IOTIMEDOUT,
  93         DORESET,
  94         RESETCOMPLETE,
  95         RESETTIMEDOUT,
  96         DORECAL,
  97         RECALWAIT,
  98         RECALTIMEDOUT,
  99         RECALCOMPLETE,
 100 };
 101
 102 /* software state, per controller */
 103 struct fdc_softc {
 104         device_t sc_dev;                /* boilerplate */
 105         void *sc_ih;
 106
 107         bus_space_tag_t sc_iot;         /* I/O space identifier */
 108         bus_space_handle_t sc_ioh;      /* I/O handle */
 109
 110         struct callout sc_timo_ch;      /* timeout callout */
 111         struct callout sc_intr_ch;      /* pseudo-intr callout */
 112
 113         bus_size_t sc_maxiosize;
 114
 115         struct fd_softc *sc_fd[4];      /* pointers to children */
 116         TAILQ_HEAD(drivehead, fd_softc) sc_drives;
 117         enum fdc_state sc_state;
 118         int sc_errors;                  /* number of retries so far */
 119         u_char sc_status[7];            /* copy of registers */
 120
 121         /* DMA functions set from MD code */
 122         void (*sc_dma_start)(struct fdc_softc *, void *, size_t, int);
 123         void (*sc_dma_abort)(struct fdc_softc *);
 124         void (*sc_dma_done)(struct fdc_softc *);
 125 };
 126
 127 #define FDCDMA_START(fdc, addr, len, datain)    \
 128     (*(fdc)->sc_dma_start)(fdc, addr, len, datain)
 129 #define FDCDMA_ABORT(fdc)       (*(fdc)->sc_dma_abort)(fdc)
 130 #define FDCDMA_DONE(fdc)        (*(fdc)->sc_dma_done)(fdc)
 131
 132 int out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x);
 133
 134 void fdcattach(struct fdc_softc *);
 135 int fdcintr(void *);