mgnsc.c revision 1.37
1 /* $NetBSD: mgnsc.c,v 1.37 2003/08/07 16:26:42 agc 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 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)dma.c 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: mgnsc.c,v 1.37 2003/08/07 16:26:42 agc Exp $"); 70 71 #include <sys/param.h> 72 #include <sys/systm.h> 73 #include <sys/kernel.h> 74 #include <sys/device.h> 75 76 #include <uvm/uvm_extern.h> 77 78 #include <dev/scsipi/scsi_all.h> 79 #include <dev/scsipi/scsipi_all.h> 80 #include <dev/scsipi/scsiconf.h> 81 #include <amiga/amiga/custom.h> 82 #include <amiga/amiga/cc.h> 83 #include <amiga/amiga/device.h> 84 #include <amiga/amiga/isr.h> 85 #include <amiga/dev/siopreg.h> 86 #include <amiga/dev/siopvar.h> 87 #include <amiga/dev/zbusvar.h> 88 89 void mgnscattach(struct device *, struct device *, void *); 90 int mgnscmatch(struct device *, struct cfdata *, void *); 91 int mgnsc_dmaintr(void *); 92 #ifdef DEBUG 93 void mgnsc_dump(void); 94 #endif 95 96 97 #ifdef DEBUG 98 #endif 99 100 CFATTACH_DECL(mgnsc, sizeof(struct siop_softc), 101 mgnscmatch, mgnscattach, NULL, NULL); 102 103 /* 104 * if we are a CSA Magnum 40 SCSI 105 */ 106 int 107 mgnscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 108 { 109 struct zbus_args *zap; 110 111 zap = auxp; 112 if (zap->manid == 1058 && zap->prodid == 17) 113 return(1); 114 return(0); 115 } 116 117 void 118 mgnscattach(struct device *pdp, struct device *dp, void *auxp) 119 { 120 struct siop_softc *sc = (struct siop_softc *)dp; 121 struct zbus_args *zap; 122 siop_regmap_p rp; 123 struct scsipi_adapter *adapt = &sc->sc_adapter; 124 struct scsipi_channel *chan = &sc->sc_channel; 125 126 printf("\n"); 127 zap = auxp; 128 129 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 0x8000); 130 131 /* 132 * CTEST7 = TT1 133 */ 134 sc->sc_clock_freq = 33; /* Clock = 33Mhz */ 135 sc->sc_ctest7 = SIOP_CTEST7_TT1; 136 sc->sc_dcntl = 0x00; 137 138 alloc_sicallback(); 139 140 /* 141 * Fill in the scsipi_adapter. 142 */ 143 memset(adapt, 0, sizeof(*adapt)); 144 adapt->adapt_dev = &sc->sc_dev; 145 adapt->adapt_nchannels = 1; 146 adapt->adapt_openings = 7; 147 adapt->adapt_max_periph = 1; 148 adapt->adapt_request = siop_scsipi_request; 149 adapt->adapt_minphys = siop_minphys; 150 151 /* 152 * Fill in the scsipi_channel. 153 */ 154 memset(chan, 0, sizeof(*chan)); 155 chan->chan_adapter = adapt; 156 chan->chan_bustype = &scsi_bustype; 157 chan->chan_channel = 0; 158 chan->chan_ntargets = 8; 159 chan->chan_nluns = 8; 160 chan->chan_id = 7; 161 162 siopinitialize(sc); 163 164 sc->sc_isr.isr_intr = mgnsc_dmaintr; 165 sc->sc_isr.isr_arg = sc; 166 sc->sc_isr.isr_ipl = 6; 167 add_isr (&sc->sc_isr); 168 169 /* 170 * attach all scsi units on us 171 */ 172 config_found(dp, chan, scsiprint); 173 } 174 175 /* 176 * Level 6 interrupt processing for the Magnum/40 SCSI. Because the 177 * level 6 interrupt is above splbio, the interrupt status is saved 178 * and an sicallback to the level 2 interrupt handler scheduled. 179 * This way, the actual processing of the interrupt can be deferred 180 * until splbio is unblocked. 181 */ 182 183 int 184 mgnsc_dmaintr(void *arg) 185 { 186 struct siop_softc *sc = arg; 187 siop_regmap_p rp; 188 u_char istat; 189 190 if (sc->sc_flags & SIOP_INTSOFF) 191 return (0); /* interrupts are not active */ 192 rp = sc->sc_siopp; 193 istat = rp->siop_istat; 194 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 195 return (0); 196 /* 197 * save interrupt status, DMA status, and SCSI status 0 198 * (may need to deal with stacked interrupts?) 199 */ 200 sc->sc_sstat0 = rp->siop_sstat0; 201 sc->sc_istat = istat; 202 sc->sc_dstat = rp->siop_dstat; 203 /* 204 * disable interrupts until the callback can process this 205 * interrupt. 206 */ 207 rp->siop_sien = 0; 208 rp->siop_dien = 0; 209 sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF; 210 add_sicallback((sifunc_t)siopintr, sc, NULL); 211 return (1); 212 } 213 214 #ifdef DEBUG 215 void 216 mgnsc_dump(void) 217 { 218 extern struct cfdriver mgnsc_cd; 219 int i; 220 221 for (i = 0; i < mgnsc_cd.cd_ndevs; ++i) 222 if (mgnsc_cd.cd_devs[i]) 223 siop_dump(mgnsc_cd.cd_devs[i]); 224 } 225 #endif 226
Indexes created Wed Sep 24 14:09:57 GMT 2025