1 /* $NetBSD: wesc.c,v 1.19 1996/12/23 09:10:30 veego 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 <scsi/scsi_all.h> 44 #include <scsi/scsiconf.h> 45 #include <amiga/amiga/custom.h> 46 #include <amiga/amiga/cc.h> 47 #include <amiga/amiga/device.h> 48 #include <amiga/amiga/isr.h> 49 #include <amiga/dev/siopreg.h> 50 #include <amiga/dev/siopvar.h> 51 #include <amiga/dev/zbusvar.h> 52 53 void wescattach __P((struct device *, struct device *, void *)); 54 int wescmatch __P((struct device *, struct cfdata *, void *)); 55 int wesc_dmaintr __P((void *)); 56 #ifdef DEBUG 57 void wesc_dump __P((void)); 58 #endif 59 60 struct scsi_adapter wesc_scsiswitch = { 61 siop_scsicmd, 62 siop_minphys, 63 0, /* no lun support */ 64 0, /* no lun support */ 65 }; 66 67 struct scsi_device wesc_scsidev = { 68 NULL, /* use default error handler */ 69 NULL, /* do not have a start functio */ 70 NULL, /* have no async handler */ 71 NULL, /* Use default done routine */ 72 }; 73 74 75 #ifdef DEBUG 76 #endif 77 78 struct cfattach wesc_ca = { 79 sizeof(struct siop_softc), wescmatch, wescattach 80 }; 81 82 struct cfdriver wesc_cd = { 83 NULL, "wesc", DV_DULL, NULL, 0 84 }; 85 86 /* 87 * if we are an MacroSystemsUS Warp Engine 88 */ 89 int 90 wescmatch(pdp, cfp, auxp) 91 struct device *pdp; 92 struct cfdata *cfp; 93 void *auxp; 94 { 95 struct zbus_args *zap; 96 97 zap = auxp; 98 if (zap->manid == 2203 && zap->prodid == 19) 99 return(1); 100 return(0); 101 } 102 103 void 104 wescattach(pdp, dp, auxp) 105 struct device *pdp, *dp; 106 void *auxp; 107 { 108 struct siop_softc *sc; 109 struct zbus_args *zap; 110 siop_regmap_p rp; 111 112 printf("\n"); 113 114 zap = auxp; 115 116 sc = (struct siop_softc *)dp; 117 sc->sc_siopp = rp = zap->va + 0x40000; 118 119 /* 120 * CTEST7 = SC0, TT1 121 */ 122 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 123 sc->sc_ctest7 = SIOP_CTEST7_SC0 | SIOP_CTEST7_TT1; 124 sc->sc_dcntl = 0x00; 125 126 sc->sc_link.channel = SCSI_CHANNEL_ONLY_ONE; 127 sc->sc_link.adapter_softc = sc; 128 sc->sc_link.adapter_target = 7; 129 sc->sc_link.adapter = &wesc_scsiswitch; 130 sc->sc_link.device = &wesc_scsidev; 131 sc->sc_link.openings = 2; 132 sc->sc_link.max_target = 7; 133 134 siopinitialize(sc); 135 136 sc->sc_isr.isr_intr = wesc_dmaintr; 137 sc->sc_isr.isr_arg = sc; 138 sc->sc_isr.isr_ipl = 2; 139 add_isr (&sc->sc_isr); 140 141 /* 142 * attach all scsi units on us 143 */ 144 config_found(dp, &sc->sc_link, scsiprint); 145 } 146 147 int 148 wesc_dmaintr(arg) 149 void *arg; 150 { 151 struct siop_softc *sc = arg; 152 siop_regmap_p rp; 153 u_char istat; 154 155 if (sc->sc_flags & SIOP_INTSOFF) 156 return (0); /* interrupts are not active */ 157 rp = sc->sc_siopp; 158 istat = rp->siop_istat; 159 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 160 return (0); 161 /* 162 * save interrupt status, DMA status, and SCSI status 0 163 * (may need to deal with stacked interrupts?) 164 */ 165 sc->sc_sstat0 = rp->siop_sstat0; 166 sc->sc_istat = istat; 167 sc->sc_dstat = rp->siop_dstat; 168 siopintr(sc); 169 return(1); 170 } 171 172 #ifdef DEBUG 173 void 174 wesc_dump() 175 { 176 int i; 177 178 for (i = 0; i < wesc_cd.cd_ndevs; ++i) 179 if (wesc_cd.cd_devs[i]) 180 siop_dump(wesc_cd.cd_devs[i]); 181 } 182 #endif 183