1 /* $NetBSD: wesc.c,v 1.20 1997/08/27 11:23:23 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Michael L. Hitch 5 * Copyright (c) 1982, 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)dma.c 37 */ 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 #include <dev/scsipi/scsi_all.h> 44 #include <dev/scsipi/scsipi_all.h> 45 #include <dev/scsipi/scsiconf.h> 46 #include <amiga/amiga/custom.h> 47 #include <amiga/amiga/cc.h> 48 #include <amiga/amiga/device.h> 49 #include <amiga/amiga/isr.h> 50 #include <amiga/dev/siopreg.h> 51 #include <amiga/dev/siopvar.h> 52 #include <amiga/dev/zbusvar.h> 53 54 void wescattach __P((struct device *, struct device *, void *)); 55 int wescmatch __P((struct device *, struct cfdata *, void *)); 56 int wesc_dmaintr __P((void *)); 57 #ifdef DEBUG 58 void wesc_dump __P((void)); 59 #endif 60 61 struct scsipi_adapter wesc_scsiswitch = { 62 siop_scsicmd, 63 siop_minphys, 64 0, /* no lun support */ 65 0, /* no lun support */ 66 }; 67 68 struct scsipi_device wesc_scsidev = { 69 NULL, /* use default error handler */ 70 NULL, /* do not have a start functio */ 71 NULL, /* have no async handler */ 72 NULL, /* Use default done routine */ 73 }; 74 75 76 #ifdef DEBUG 77 #endif 78 79 struct cfattach wesc_ca = { 80 sizeof(struct siop_softc), wescmatch, wescattach 81 }; 82 83 struct cfdriver wesc_cd = { 84 NULL, "wesc", DV_DULL, NULL, 0 85 }; 86 87 /* 88 * if we are an MacroSystemsUS Warp Engine 89 */ 90 int 91 wescmatch(pdp, cfp, auxp) 92 struct device *pdp; 93 struct cfdata *cfp; 94 void *auxp; 95 { 96 struct zbus_args *zap; 97 98 zap = auxp; 99 if (zap->manid == 2203 && zap->prodid == 19) 100 return(1); 101 return(0); 102 } 103 104 void 105 wescattach(pdp, dp, auxp) 106 struct device *pdp, *dp; 107 void *auxp; 108 { 109 struct siop_softc *sc; 110 struct zbus_args *zap; 111 siop_regmap_p rp; 112 113 printf("\n"); 114 115 zap = auxp; 116 117 sc = (struct siop_softc *)dp; 118 sc->sc_siopp = rp = zap->va + 0x40000; 119 120 /* 121 * CTEST7 = SC0, TT1 122 */ 123 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 124 sc->sc_ctest7 = SIOP_CTEST7_SC0 | SIOP_CTEST7_TT1; 125 sc->sc_dcntl = 0x00; 126 127 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 128 sc->sc_link.adapter_softc = sc; 129 sc->sc_link.scsipi_scsi.adapter_target = 7; 130 sc->sc_link.adapter = &wesc_scsiswitch; 131 sc->sc_link.device = &wesc_scsidev; 132 sc->sc_link.openings = 2; 133 sc->sc_link.scsipi_scsi.max_target = 7; 134 sc->sc_link.type = BUS_SCSI; 135 136 siopinitialize(sc); 137 138 sc->sc_isr.isr_intr = wesc_dmaintr; 139 sc->sc_isr.isr_arg = sc; 140 sc->sc_isr.isr_ipl = 2; 141 add_isr (&sc->sc_isr); 142 143 /* 144 * attach all scsi units on us 145 */ 146 config_found(dp, &sc->sc_link, scsiprint); 147 } 148 149 int 150 wesc_dmaintr(arg) 151 void *arg; 152 { 153 struct siop_softc *sc = arg; 154 siop_regmap_p rp; 155 u_char istat; 156 157 if (sc->sc_flags & SIOP_INTSOFF) 158 return (0); /* interrupts are not active */ 159 rp = sc->sc_siopp; 160 istat = rp->siop_istat; 161 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 162 return (0); 163 /* 164 * save interrupt status, DMA status, and SCSI status 0 165 * (may need to deal with stacked interrupts?) 166 */ 167 sc->sc_sstat0 = rp->siop_sstat0; 168 sc->sc_istat = istat; 169 sc->sc_dstat = rp->siop_dstat; 170 siopintr(sc); 171 return(1); 172 } 173 174 #ifdef DEBUG 175 void 176 wesc_dump() 177 { 178 int i; 179 180 for (i = 0; i < wesc_cd.cd_ndevs; ++i) 181 if (wesc_cd.cd_devs[i]) 182 siop_dump(wesc_cd.cd_devs[i]); 183 } 184 #endif 185