zssc.c revision 1.35
1 /* $NetBSD: zssc.c,v 1.35 2003/08/07 16:26:45 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: zssc.c,v 1.35 2003/08/07 16:26:45 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 zsscattach(struct device *, struct device *, void *); 90 int zsscmatch(struct device *, struct cfdata *, void *); 91 int zssc_dmaintr(void *); 92 #ifdef DEBUG 93 void zssc_dump(void); 94 #endif 95 96 CFATTACH_DECL(zssc, sizeof(struct siop_softc), 97 zsscmatch, zsscattach, NULL, NULL); 98 99 /* 100 * if we are an PPI Zeus 101 */ 102 int 103 zsscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 104 { 105 struct zbus_args *zap; 106 107 zap = auxp; 108 if (zap->manid == 2026 && zap->prodid == 150) 109 return(1); 110 return(0); 111 } 112 113 void 114 zsscattach(struct device *pdp, struct device *dp, void *auxp) 115 { 116 struct siop_softc *sc; 117 struct zbus_args *zap; 118 siop_regmap_p rp; 119 120 printf("\n"); 121 122 zap = auxp; 123 124 sc = (struct siop_softc *)dp; 125 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 0x4000); 126 127 /* 128 * CTEST7 = 00 129 */ 130 sc->sc_clock_freq = 66; /* Clock = 66Mhz */ 131 sc->sc_ctest7 = 0x00; 132 sc->sc_dcntl = 0x00; 133 134 alloc_sicallback(); 135 136 sc->sc_adapter.adapt_dev = &sc->sc_dev; 137 sc->sc_adapter.adapt_nchannels = 1; 138 sc->sc_adapter.adapt_openings = 7; 139 sc->sc_adapter.adapt_max_periph = 1; 140 sc->sc_adapter.adapt_ioctl = NULL; 141 sc->sc_adapter.adapt_minphys = siop_minphys; 142 sc->sc_adapter.adapt_request = siop_scsipi_request; 143 144 sc->sc_channel.chan_adapter = &sc->sc_adapter; 145 sc->sc_channel.chan_bustype = &scsi_bustype; 146 sc->sc_channel.chan_channel = 0; 147 sc->sc_channel.chan_ntargets = 8; 148 sc->sc_channel.chan_nluns = 8; 149 sc->sc_channel.chan_id = 7; 150 151 siopinitialize(sc); 152 153 sc->sc_isr.isr_intr = zssc_dmaintr; 154 sc->sc_isr.isr_arg = sc; 155 sc->sc_isr.isr_ipl = 6; 156 add_isr(&sc->sc_isr); 157 158 /* 159 * attach all scsi units on us 160 */ 161 config_found(dp, &sc->sc_channel, scsiprint); 162 } 163 164 /* 165 * Level 6 interrupt processing for the Progressive Peripherals Inc 166 * Zeus SCSI. Because the level 6 interrupt is above splbio, the 167 * interrupt status is saved and an sicallback to the level 2 interrupt 168 * handler scheduled. This way, the actual processing of the interrupt 169 * can be deferred until splbio is unblocked. 170 */ 171 172 int 173 zssc_dmaintr(void *arg) 174 { 175 struct siop_softc *sc = arg; 176 siop_regmap_p rp; 177 int istat; 178 179 if (sc->sc_flags & SIOP_INTSOFF) 180 return (0); /* interrupts are not active */ 181 rp = sc->sc_siopp; 182 istat = rp->siop_istat; 183 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 184 return(0); 185 /* 186 * save interrupt status, DMA status, and SCSI status 0 187 * (may need to deal with stacked interrupts?) 188 */ 189 sc->sc_sstat0 = rp->siop_sstat0; 190 sc->sc_istat = istat; 191 sc->sc_dstat = rp->siop_dstat; 192 /* 193 * disable interrupts until the callback can process this 194 * interrupt. 195 */ 196 rp->siop_sien = 0; 197 rp->siop_dien = 0; 198 sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF; 199 add_sicallback((sifunc_t)siopintr, sc, NULL); 200 return(1); 201 } 202 203 #ifdef DEBUG 204 void 205 zssc_dump(void) 206 { 207 extern struct cfdriver zssc_cd; 208 int i; 209 210 for (i = 0; i < zssc_cd.cd_ndevs; ++i) 211 if (zssc_cd.cd_devs[i]) 212 siop_dump(zssc_cd.cd_devs[i]); 213 } 214 #endif 215
Indexes created Sun Nov 02 07:10:05 GMT 2025