sys/arch/amiga/dev/cbiiisc.c

   1 /*      $NetBSD: cbiiisc.c,v 1.16 2008/06/13 08:13:37 cegger 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) 1994,1998 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: cbiiisc.c,v 1.16 2008/06/13 08:13:37 cegger 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
  78 #define ARCH_720                        /* This is for a 53c770 */
  79
  80 #include <amiga/dev/siopreg.h>
  81 #include <amiga/dev/siopvar.h>
  82 #include <amiga/dev/zbusvar.h>
  83
  84 void cbiiiscattach(struct device *, struct device *, void *);
  85 int  cbiiiscmatch(struct device *, struct cfdata *, void *);
  86 int  cbiiisc_dmaintr(void *);
  87 #ifdef DEBUG
  88 void cbiiisc_dump(void);
  89 #endif
  90
  91 #ifdef DEBUG
  92 #endif
  93
  94 CFATTACH_DECL(cbiiisc, sizeof(struct siop_softc),
  95     cbiiiscmatch, cbiiiscattach, NULL, NULL);
  96
  97 /*
  98  * if we are a CyberStorm MK III SCSI
  99  */
 100 int
 101 cbiiiscmatch(struct device *pdp, struct cfdata *cfp, void *auxp)
 102 {
 103         struct zbus_args *zap;
 104
 105         zap = auxp;
 106         if (zap->manid == 8512 && zap->prodid == 100)
 107                 return(1);
 108         return(0);
 109 }
 110
 111 void
 112 cbiiiscattach(struct device *pdp, struct device *dp, void *auxp)
 113 {
 114         struct siop_softc *sc = (struct siop_softc *)dp;
 115         struct zbus_args *zap;
 116         siop_regmap_p rp;
 117         struct scsipi_adapter *adapt = &sc->sc_adapter;
 118         struct scsipi_channel *chan = &sc->sc_channel;
 119
 120         printf("\n");
 121
 122         zap = auxp;
 123
 124         sc->sc_siopp = rp = ztwomap(0xf40000);
 125         /* siopng_dump_registers(sc); */
 126
 127         /*
 128          * CTEST7 = 00
 129          */
 130         sc->sc_clock_freq = 50;         /* Clock = 50 MHz >> */
 131         sc->sc_ctest7 = 0x00;
 132         sc->sc_dcntl = 0x20;            /* XXX ?? */
 133
 134         /*
 135          * Fill in the scsipi_adapter.
 136          */
 137         memset(adapt, 0, sizeof(*adapt));
 138         adapt->adapt_dev = &sc->sc_dev;
 139         adapt->adapt_nchannels = 1;
 140         adapt->adapt_openings = 7;
 141         adapt->adapt_max_periph = 1;
 142         adapt->adapt_request = siopng_scsipi_request;
 143         adapt->adapt_minphys = siopng_minphys;
 144
 145         /*
 146          * Fill in the scsipi_channel.
 147          */
 148         memset(chan, 0, sizeof(*chan));
 149         chan->chan_adapter = adapt;
 150         chan->chan_bustype = &scsi_bustype;
 151         chan->chan_channel = 0;
 152         chan->chan_ntargets = 16;
 153         chan->chan_nluns = 8;
 154         chan->chan_id = 7;
 155
 156         siopnginitialize(sc);
 157
 158         if (sc->sc_channel.chan_ntargets < 0)
 159                 return;
 160
 161         sc->sc_isr.isr_intr = cbiiisc_dmaintr;
 162         sc->sc_isr.isr_arg = sc;
 163         sc->sc_isr.isr_ipl = 2;         /* ?? */
 164         add_isr(&sc->sc_isr);
 165
 166         /*
 167          * attach all scsi units on us
 168          */
 169         config_found(dp, chan, scsiprint);
 170 }
 171
 172 int
 173 cbiiisc_dmaintr(void *arg)
 174 {
 175         struct siop_softc *sc = arg;
 176         siop_regmap_p rp;
 177         int istat;
 178
 179         if (sc->sc_flags & SIOP_INTSOFF)
 180                 return (0);     /* interrupts are not active */
 181         rp = sc->sc_siopp;
 182         istat = rp->siop_istat;
 183         if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
 184                 return(0);
 185         /*
 186          * save interrupt status, DMA status, and SCSI status 0
 187          * (may need to deal with stacked interrupts?)
 188          */
 189         sc->sc_sist = rp->siop_sist;
 190         sc->sc_istat = istat;
 191         sc->sc_dstat = rp->siop_dstat;
 192         siopngintr(sc);
 193         return(1);
 194 }
 195
 196 #ifdef DEBUG
 197 void
 198 cbiiisc_dump(void)
 199 {
 200         extern struct cfdriver cbiiisc_cd;
 201         struct siop_softc *sc;
 202         int i;
 203
 204         for (i = 0; i < cbiiisc_cd.cd_ndevs; ++i) {
 205                 sc = device_lookup_private(&cbiiisc_cd, i);
 206                 if (sc != NULL)
 207                         siopng_dump(sc);
 208         }
 209 }
 210 #endif