1 /* $NetBSD: wesc.c,v 1.26 2001/04/25 17:53:09 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 62 #ifdef DEBUG 63 #endif 64 65 struct cfattach wesc_ca = { 66 sizeof(struct siop_softc), wescmatch, wescattach 67 }; 68 69 /* 70 * if we are an MacroSystemsUS Warp Engine 71 */ 72 int 73 wescmatch(pdp, cfp, auxp) 74 struct device *pdp; 75 struct cfdata *cfp; 76 void *auxp; 77 { 78 struct zbus_args *zap; 79 80 zap = auxp; 81 if (zap->manid == 2203 && zap->prodid == 19) 82 return(1); 83 return(0); 84 } 85 86 void 87 wescattach(pdp, dp, auxp) 88 struct device *pdp, *dp; 89 void *auxp; 90 { 91 struct siop_softc *sc = (struct siop_softc *)dp; 92 struct zbus_args *zap; 93 siop_regmap_p rp; 94 struct scsipi_adapter *adapt = &sc->sc_adapter; 95 struct scsipi_channel *chan = &sc->sc_channel; 96 97 98 printf("\n"); 99 100 zap = auxp; 101 102 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 0x40000); 103 104 /* 105 * CTEST7 = SC0, TT1 106 */ 107 sc->sc_clock_freq = 50; /* Clock = 50Mhz */ 108 sc->sc_ctest7 = SIOP_CTEST7_SC0 | SIOP_CTEST7_TT1; 109 sc->sc_dcntl = 0x00; 110 111 /* 112 * Fill in the scsipi_adapter. 113 */ 114 memset(adapt, 0, sizeof(*adapt)); 115 adapt->adapt_dev = &sc->sc_dev; 116 adapt->adapt_nchannels = 1; 117 adapt->adapt_openings = 7; 118 adapt->adapt_max_periph = 1; 119 adapt->adapt_request = siop_scsipi_request; 120 adapt->adapt_minphys = siop_minphys; 121 122 /* 123 * Fill in the scsipi_channel. 124 */ 125 memset(chan, 0, sizeof(*chan)); 126 chan->chan_adapter = adapt; 127 chan->chan_bustype = &scsi_bustype; 128 chan->chan_channel = 0; 129 chan->chan_ntargets = 8; 130 chan->chan_nluns = 8; 131 chan->chan_id = 7; 132 133 siopinitialize(sc); 134 135 sc->sc_isr.isr_intr = wesc_dmaintr; 136 sc->sc_isr.isr_arg = sc; 137 sc->sc_isr.isr_ipl = 2; 138 add_isr (&sc->sc_isr); 139 140 /* 141 * attach all scsi units on us 142 */ 143 config_found(dp, chan, scsiprint); 144 } 145 146 int 147 wesc_dmaintr(arg) 148 void *arg; 149 { 150 struct siop_softc *sc = arg; 151 siop_regmap_p rp; 152 u_char istat; 153 154 if (sc->sc_flags & SIOP_INTSOFF) 155 return (0); /* interrupts are not active */ 156 rp = sc->sc_siopp; 157 istat = rp->siop_istat; 158 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 159 return (0); 160 /* 161 * save interrupt status, DMA status, and SCSI status 0 162 * (may need to deal with stacked interrupts?) 163 */ 164 sc->sc_sstat0 = rp->siop_sstat0; 165 sc->sc_istat = istat; 166 sc->sc_dstat = rp->siop_dstat; 167 siopintr(sc); 168 return(1); 169 } 170 171 #ifdef DEBUG 172 void 173 wesc_dump() 174 { 175 extern struct cfdriver wesc_cd; 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