1/* $NetBSD: mgnsc.c,v 1.44 2009/05/19 18:39:26 phx 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 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: mgnsc.c,v 1.44 2009/05/19 18:39:26 phx 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 <dev/scsipi/scsi_all.h> 69#include <dev/scsipi/scsipi_all.h> 70#include <dev/scsipi/scsiconf.h> 71#include <amiga/amiga/custom.h> 72#include <amiga/amiga/cc.h> 73#include <amiga/amiga/device.h> 74#include <amiga/amiga/isr.h> 75#include <amiga/dev/siopreg.h> 76#include <amiga/dev/siopvar.h> 77#include <amiga/dev/zbusvar.h> 78 79void mgnscattach(struct device *, struct device *, void *); 80int mgnscmatch(struct device *, struct cfdata *, void *); 81int mgnsc_dmaintr(void *); 82#ifdef DEBUG 83void mgnsc_dump(void); 84#endif 85 86 87#ifdef DEBUG 88#endif 89 90CFATTACH_DECL(mgnsc, sizeof(struct siop_softc), 91 mgnscmatch, mgnscattach, NULL, NULL); 92 93/* 94 * if we are a CSA Magnum 40 SCSI 95 */ 96int 97mgnscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 98{ 99 struct zbus_args *zap; 100 101 zap = auxp; 102 if (zap->manid == 1058 && zap->prodid == 17) 103 return(1); 104 return(0); 105} 106 107void 108mgnscattach(struct device *pdp, struct device *dp, void *auxp) 109{ 110 struct siop_softc *sc = (struct siop_softc *)dp; 111 struct zbus_args *zap; 112 siop_regmap_p rp; 113 struct scsipi_adapter *adapt = &sc->sc_adapter; 114 struct scsipi_channel *chan = &sc->sc_channel; 115 116 printf("\n"); 117 zap = auxp; 118 119 sc->sc_siopp = rp = (siop_regmap_p)((char *)zap->va + 0x8000); 120 121 /* 122 * CTEST7 = TT1 123 */ 124 sc->sc_clock_freq = 33; /* Clock = 33 MHz */ 125 sc->sc_ctest7 = SIOP_CTEST7_TT1; 126 sc->sc_dcntl = 0x00; 127 128 sc->sc_siop_si = softint_establish(SOFTINT_BIO, 129 (void (*)(void *))siopintr, sc); 130 131 /* 132 * Fill in the scsipi_adapter. 133 */ 134 memset(adapt, 0, sizeof(*adapt)); 135 adapt->adapt_dev = &sc->sc_dev; 136 adapt->adapt_nchannels = 1; 137 adapt->adapt_openings = 7; 138 adapt->adapt_max_periph = 1; 139 adapt->adapt_request = siop_scsipi_request; 140 adapt->adapt_minphys = siop_minphys; 141 142 /* 143 * Fill in the scsipi_channel. 144 */ 145 memset(chan, 0, sizeof(*chan)); 146 chan->chan_adapter = adapt; 147 chan->chan_bustype = &scsi_bustype; 148 chan->chan_channel = 0; 149 chan->chan_ntargets = 8; 150 chan->chan_nluns = 8; 151 chan->chan_id = 7; 152 153 siopinitialize(sc); 154 155 sc->sc_isr.isr_intr = mgnsc_dmaintr; 156 sc->sc_isr.isr_arg = sc; 157 sc->sc_isr.isr_ipl = 6; 158 add_isr (&sc->sc_isr); 159 160 /* 161 * attach all scsi units on us 162 */ 163 config_found(dp, chan, scsiprint); 164} 165 166/* 167 * Level 6 interrupt processing for the Magnum/40 SCSI. Because the 168 * level 6 interrupt is above splbio, the interrupt status is saved 169 * and a softint scheduled. This way, the actual processing of the 170 * interrupt can be deferred until splbio is unblocked. 171 */ 172 173int 174mgnsc_dmaintr(void *arg) 175{ 176 struct siop_softc *sc = arg; 177 siop_regmap_p rp; 178 u_char istat; 179 180 if (sc->sc_flags & SIOP_INTSOFF) 181 return (0); /* interrupts are not active */ 182 rp = sc->sc_siopp; 183 istat = rp->siop_istat; 184 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 185 return (0); 186 /* 187 * save interrupt status, DMA status, and SCSI status 0 188 * (may need to deal with stacked interrupts?) 189 */ 190 sc->sc_sstat0 = rp->siop_sstat0; 191 sc->sc_istat = istat; 192 sc->sc_dstat = rp->siop_dstat; 193 /* 194 * disable interrupts until the callback can process this 195 * interrupt. 196 */ 197 rp->siop_sien = 0; 198 rp->siop_dien = 0; 199 sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF; 200 softint_schedule(sc->sc_siop_si); 201 return (1); 202} 203 204#ifdef DEBUG 205void 206mgnsc_dump(void) 207{ 208 extern struct cfdriver mgnsc_cd; 209 struct siop_softc *sc; 210 int i; 211 212 for (i = 0; i < mgnsc_cd.cd_ndevs; ++i) { 213 sc = device_lookup_private(&mgnsc_cd, i); 214 if (sc != NULL) 215 siop_dump(sc); 216 } 217} 218#endif 219