1 /* $NetBSD: wesc.c,v 1.17 1996/10/13 03:07:36 christos 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 *, void *, 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, match, auxp) 91 struct device *pdp; 92 void *match, *auxp; 93 { 94 struct zbus_args *zap; 95 96 zap = auxp; 97 if (zap->manid == 2203 && zap->prodid == 19) 98 return(1); 99 return(0); 100 } 101 102 void 103 wescattach(pdp, dp, auxp) 104 struct device *pdp, *dp; 105 void *auxp; 106 { 107 struct siop_softc *sc; 108 struct zbus_args *zap; 109 siop_regmap_p rp; 110 111 printf("\n"); 112 113 zap = auxp; 114 115 sc = (struct siop_softc *)dp; 116 sc->sc_siopp = rp = zap->va + 0x40000; 117 118 /* 119 * CTEST7 = SC0, TT1 120 */ 121 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 122 sc->sc_ctest7 = SIOP_CTEST7_SC0 | SIOP_CTEST7_TT1; 123 sc->sc_dcntl = 0x00; 124 125 sc->sc_link.channel = SCSI_CHANNEL_ONLY_ONE; 126 sc->sc_link.adapter_softc = sc; 127 sc->sc_link.adapter_target = 7; 128 sc->sc_link.adapter = &wesc_scsiswitch; 129 sc->sc_link.device = &wesc_scsidev; 130 sc->sc_link.openings = 2; 131 132 siopinitialize(sc); 133 134 sc->sc_isr.isr_intr = wesc_dmaintr; 135 sc->sc_isr.isr_arg = sc; 136 sc->sc_isr.isr_ipl = 2; 137 add_isr (&sc->sc_isr); 138 139 /* 140 * attach all scsi units on us 141 */ 142 config_found(dp, &sc->sc_link, scsiprint); 143 } 144 145 int 146 wesc_dmaintr(arg) 147 void *arg; 148 { 149 struct siop_softc *sc = arg; 150 siop_regmap_p rp; 151 u_char istat; 152 153 if (sc->sc_flags & SIOP_INTSOFF) 154 return (0); /* interrupts are not active */ 155 rp = sc->sc_siopp; 156 istat = rp->siop_istat; 157 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 158 return (0); 159 /* 160 * save interrupt status, DMA status, and SCSI status 0 161 * (may need to deal with stacked interrupts?) 162 */ 163 sc->sc_sstat0 = rp->siop_sstat0; 164 sc->sc_istat = istat; 165 sc->sc_dstat = rp->siop_dstat; 166 siopintr(sc); 167 return(1); 168 } 169 170 #ifdef DEBUG 171 void 172 wesc_dump() 173 { 174 int i; 175 176 for (i = 0; i < wesc_cd.cd_ndevs; ++i) 177 if (wesc_cd.cd_devs[i]) 178 siop_dump(wesc_cd.cd_devs[i]); 179 } 180 #endif 181