sys/arch/atari/isa/fdcisa.c

   1 /*      $NetBSD: fdcisa.c,v 1.12 2008/03/17 00:00:55 yamt 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 #include <sys/cdefs.h>
  67 __KERNEL_RCSID(0, "$NetBSD: fdcisa.c,v 1.12 2008/03/17 00:00:55 yamt Exp $");
  68
  69 #include <sys/param.h>
  70 #include <sys/systm.h>
  71 #include <sys/callout.h>
  72 #include <sys/device.h>
  73
  74 #include <machine/bus.h>
  75
  76 #include <dev/isa/isavar.h>
  77 #include <dev/isa/isadmavar.h>
  78 #include <dev/isa/fdreg.h>
  79 #include <dev/isa/fdcvar.h>
  80
  81 #include <atari/atari/device.h>
  82
  83
  84 /* controller driver configuration */
  85 int     fdc_isa_probe (device_t, cfdata_t, void *);
  86 void    fdc_isa_attach (device_t, device_t, void *);
  87
  88 struct fdc_isa_softc {
  89         struct fdc_softc        sc_fdc;         /* base fdc device */
  90         bus_space_handle_t      sc_baseioh;     /* base I/O handle */
  91 };
  92
  93 CFATTACH_DECL_NEW(fdcisa, sizeof(struct fdc_isa_softc),
  94     fdc_isa_probe, fdc_isa_attach, NULL, NULL);
  95
  96 int
  97 fdc_isa_probe(device_t parent, cfdata_t cfp, void *aux)
  98 {
  99         struct isa_attach_args  *ia = aux;
 100         static int              fdc_matched = 0;
 101         bus_space_tag_t         iot;
 102         bus_space_handle_t      ioh, ctl_ioh, base_ioh;
 103         int iobase;
 104
 105         if (!atari_realconfig)
 106                 return 0;
 107
 108         /* Match only once */
 109         if (fdc_matched)
 110                 return 0;
 111
 112         iot = ia->ia_iot;
 113
 114         if (ia->ia_nio < 1)
 115                 return (0);
 116         if (ia->ia_nirq < 1)
 117                 return (0);
 118         if (ia->ia_ndrq < 1)
 119                 return (0);
 120
 121         if (ISA_DIRECT_CONFIG(ia))
 122                 return (0);
 123
 124         /* Disallow wildcarded I/O addresses. */
 125         if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
 126                 return (0);
 127
 128         /* Don't allow wildcarded IRQ/DRQ. */
 129         if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
 130                 return (0);
 131
 132         if (ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ)
 133                 return (0);
 134
 135         /* Map the i/o space. */
 136         iobase = ia->ia_io[0].ir_addr;
 137         if (bus_space_map(iot, iobase, 6 /*  FDC_NPORT */, 0, &base_ioh)) {
 138                 printf("fdcisaprobe: cannot map io-area\n");
 139                 return 0;
 140         }
 141         if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) {
 142                 bus_space_unmap(iot, base_ioh, 6);
 143                 return (0);
 144         }
 145
 146         if (bus_space_map(iot, iobase + fdctl + 2, 1, 0, &ctl_ioh)) {
 147                 bus_space_unmap(iot, base_ioh, 6);
 148                 return (0);
 149         }
 150
 151         /* Not needed for the rest of the probe. */
 152         bus_space_unmap(iot, ctl_ioh, 1);
 153
 154         /* reset */
 155         bus_space_write_1(iot, ioh, fdout, 0);
 156         delay(100);
 157         bus_space_write_1(iot, ioh, fdout, FDO_FRST);
 158
 159         /* see if it can handle a command */
 160         if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0)
 161                 goto out;
 162         out_fdc(iot, ioh, 0xdf);
 163         out_fdc(iot, ioh, 2);
 164
 165         fdc_matched   = 1;
 166         ia->ia_nio = 1;
 167         ia->ia_io[0].ir_size = FDC_NPORT;
 168
 169         ia->ia_nirq = 1;
 170         ia->ia_ndrq = 1;
 171
 172         ia->ia_niomem = 0;
 173
 174 out:
 175         bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */);
 176
 177         return fdc_matched;
 178 }
 179
 180 void
 181 fdc_isa_attach(device_t parent, device_t self, void *aux)
 182 {
 183         struct fdc_isa_softc    *isc = device_private(self);
 184         struct fdc_softc        *fdc = &isc->sc_fdc;
 185         struct isa_attach_args  *ia = aux;
 186
 187         aprint_normal("\n");
 188
 189         fdc->sc_dev = self;
 190         fdc->sc_iot = ia->ia_iot;
 191         fdc->sc_ic = ia->ia_ic;
 192         fdc->sc_drq = ia->ia_drq[0].ir_drq;
 193
 194         if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr,
 195             6 /* FDC_NPORT */, 0, &isc->sc_baseioh)) {
 196                 aprint_error_dev(self, "unable to map I/O space\n");
 197                 return;
 198         }
 199
 200         if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4,
 201             &fdc->sc_ioh)) {
 202                 aprint_error_dev(self, "unable to subregion I/O space\n");
 203                 return;
 204         }
 205
 206         if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr + fdctl + 2, 1, 0,
 207             &fdc->sc_fdctlioh)) {
 208                 aprint_error_dev(self, "unable to map CTL I/O space\n");
 209                 return;
 210         }
 211
 212         fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
 213             IST_EDGE, IPL_BIO, fdcintr, fdc);
 214
 215         fdcattach(fdc);
 216 }