sys/arch/amiga/dev/wesc.c

   1 /*      $NetBSD: wesc.c,v 1.37 2007/03/05 20:47:52 he Exp $ */
   2
   3 /*
   4  * Copyright (c) 1982, 1990 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)dma.c
  32  */
  33
  34 /*
  35  * Copyright (c) 1994 Michael L. Hitch
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  * 1. Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  * 2. Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in the
  44  *    documentation and/or other materials provided with the distribution.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  47  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  48  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  49  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  50  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  51  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  52  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  53  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  54  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  55  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  56  *
  57  *      @(#)dma.c
  58  */
  59
  60 #include <sys/cdefs.h>
  61 __KERNEL_RCSID(0, "$NetBSD: wesc.c,v 1.37 2007/03/05 20:47:52 he Exp $");
  62
  63 #include <sys/param.h>
  64 #include <sys/systm.h>
  65 #include <sys/kernel.h>
  66 #include <sys/device.h>
  67
  68 #include <uvm/uvm_extern.h>
  69
  70 #include <dev/scsipi/scsi_all.h>
  71 #include <dev/scsipi/scsipi_all.h>
  72 #include <dev/scsipi/scsiconf.h>
  73 #include <amiga/amiga/custom.h>
  74 #include <amiga/amiga/cc.h>
  75 #include <amiga/amiga/device.h>
  76 #include <amiga/amiga/isr.h>
  77 #include <amiga/dev/siopreg.h>
  78 #include <amiga/dev/siopvar.h>
  79 #include <amiga/dev/zbusvar.h>
  80
  81 void wescattach(struct device *, struct device *, void *);
  82 int wescmatch(struct device *, struct cfdata *, void *);
  83 int wesc_dmaintr(void *);
  84 #ifdef DEBUG
  85 void wesc_dump(void);
  86 #endif
  87
  88
  89 #ifdef DEBUG
  90 #endif
  91
  92 CFATTACH_DECL(wesc, sizeof(struct siop_softc),
  93     wescmatch, wescattach, NULL, NULL);
  94
  95 /*
  96  * if we are an MacroSystemsUS Warp Engine
  97  */
  98 int
  99 wescmatch(struct device *pdp, struct cfdata *cfp, void *auxp)
 100 {
 101         struct zbus_args *zap;
 102
 103         zap = auxp;
 104         if (zap->manid == 2203 && zap->prodid == 19)
 105                 return(1);
 106         return(0);
 107 }
 108
 109 void
 110 wescattach(struct device *pdp, struct device *dp, void *auxp)
 111 {
 112         struct siop_softc *sc = (struct siop_softc *)dp;
 113         struct zbus_args *zap;
 114         siop_regmap_p rp;
 115         struct scsipi_adapter *adapt = &sc->sc_adapter;
 116         struct scsipi_channel *chan = &sc->sc_channel;
 117
 118
 119         printf("\n");
 120
 121         zap = auxp;
 122
 123         sc->sc_siopp = rp = (siop_regmap_p)((char *)zap->va + 0x40000);
 124
 125         /*
 126          * CTEST7 = SC0, TT1
 127          */
 128         sc->sc_clock_freq = 50;         /* Clock = 50 MHz */
 129         sc->sc_ctest7 = SIOP_CTEST7_SC0 | SIOP_CTEST7_TT1;
 130         sc->sc_dcntl = 0x00;
 131
 132         /*
 133          * Fill in the scsipi_adapter.
 134          */
 135         memset(adapt, 0, sizeof(*adapt));
 136         adapt->adapt_dev = &sc->sc_dev;
 137         adapt->adapt_nchannels = 1;
 138         adapt->adapt_openings = 7;
 139         adapt->adapt_max_periph = 1;
 140         adapt->adapt_request = siop_scsipi_request;
 141         adapt->adapt_minphys = siop_minphys;
 142
 143         /*
 144          * Fill in the scsipi_channel.
 145          */
 146         memset(chan, 0, sizeof(*chan));
 147         chan->chan_adapter = adapt;
 148         chan->chan_bustype = &scsi_bustype;
 149         chan->chan_channel = 0;
 150         chan->chan_ntargets = 8;
 151         chan->chan_nluns = 8;
 152         chan->chan_id = 7;
 153
 154         siopinitialize(sc);
 155
 156         sc->sc_isr.isr_intr = wesc_dmaintr;
 157         sc->sc_isr.isr_arg = sc;
 158         sc->sc_isr.isr_ipl = 2;
 159         add_isr (&sc->sc_isr);
 160
 161         /*
 162          * attach all scsi units on us
 163          */
 164         config_found(dp, chan, scsiprint);
 165 }
 166
 167 int
 168 wesc_dmaintr(void *arg)
 169 {
 170         struct siop_softc *sc = arg;
 171         siop_regmap_p rp;
 172         u_char istat;
 173
 174         if (sc->sc_flags & SIOP_INTSOFF)
 175                 return (0);     /* interrupts are not active */
 176         rp = sc->sc_siopp;
 177         istat = rp->siop_istat;
 178         if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
 179                 return (0);
 180         /*
 181          * save interrupt status, DMA status, and SCSI status 0
 182          * (may need to deal with stacked interrupts?)
 183          */
 184         sc->sc_sstat0 = rp->siop_sstat0;
 185         sc->sc_istat = istat;
 186         sc->sc_dstat = rp->siop_dstat;
 187         siopintr(sc);
 188         return(1);
 189 }
 190
 191 #ifdef DEBUG
 192 void
 193 wesc_dump(void)
 194 {
 195         extern struct cfdriver wesc_cd;
 196         struct siop_softc *sc;
 197         int i;
 198
 199         for (i = 0; i < wesc_cd.cd_ndevs; ++i) {
 200                 sc = device_lookup_private(&wesc_cd, i);
 201                 if (sc != NULL)
 202                         siop_dump(sc);
 203         }
 204 }
 205 #endif