zssc.c revision 1.24
1 /* $NetBSD: zssc.c,v 1.24 1998/01/12 10:40:17 thorpej 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 zsscattach __P((struct device *, struct device *, void *)); 55 int zsscmatch __P((struct device *, struct cfdata *, void *)); 56 int zssc_dmaintr __P((void *)); 57 #ifdef DEBUG 58 void zssc_dump __P((void)); 59 #endif 60 61 struct scsipi_adapter zssc_scsiswitch = { 62 siop_scsicmd, 63 siop_minphys, 64 0, /* no lun support */ 65 0, /* no lun support */ 66 }; 67 68 struct scsipi_device zssc_scsidev = { 69 NULL, /* use default error handler */ 70 NULL, /* do not have a start functio */ 71 NULL, /* have no async handler */ 72 NULL, /* Use default done routine */ 73 }; 74 75 76 #ifdef DEBUG 77 #endif 78 79 struct cfattach zssc_ca = { 80 sizeof(struct siop_softc), zsscmatch, zsscattach 81 }; 82 83 /* 84 * if we are an PPI Zeus 85 */ 86 int 87 zsscmatch(pdp, cfp, auxp) 88 struct device *pdp; 89 struct cfdata *cfp; 90 void *auxp; 91 { 92 struct zbus_args *zap; 93 94 zap = auxp; 95 if (zap->manid == 2026 && zap->prodid == 150) 96 return(1); 97 return(0); 98 } 99 100 void 101 zsscattach(pdp, dp, auxp) 102 struct device *pdp, *dp; 103 void *auxp; 104 { 105 struct siop_softc *sc; 106 struct zbus_args *zap; 107 siop_regmap_p rp; 108 109 printf("\n"); 110 111 zap = auxp; 112 113 sc = (struct siop_softc *)dp; 114 sc->sc_siopp = rp = zap->va + 0x4000; 115 116 /* 117 * CTEST7 = 00 118 */ 119 sc->sc_clock_freq = 66; /* Clock = 66Mhz */ 120 sc->sc_ctest7 = 0x00; 121 sc->sc_dcntl = 0x00; 122 123 alloc_sicallback(); 124 125 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 126 sc->sc_link.adapter_softc = sc; 127 sc->sc_link.scsipi_scsi.adapter_target = 7; 128 sc->sc_link.adapter = &zssc_scsiswitch; 129 sc->sc_link.device = &zssc_scsidev; 130 sc->sc_link.openings = 2; 131 sc->sc_link.scsipi_scsi.max_target = 7; 132 sc->sc_link.type = BUS_SCSI; 133 134 siopinitialize(sc); 135 136 sc->sc_isr.isr_intr = zssc_dmaintr; 137 sc->sc_isr.isr_arg = sc; 138 sc->sc_isr.isr_ipl = 6; 139 add_isr(&sc->sc_isr); 140 141 /* 142 * attach all scsi units on us 143 */ 144 config_found(dp, &sc->sc_link, scsiprint); 145 } 146 147 /* 148 * Level 6 interrupt processing for the Progressive Peripherals Inc 149 * Zeus SCSI. Because the level 6 interrupt is above splbio, the 150 * interrupt status is saved and an sicallback to the level 2 interrupt 151 * handler scheduled. This way, the actual processing of the interrupt 152 * can be deferred until splbio is unblocked. 153 */ 154 155 int 156 zssc_dmaintr(arg) 157 void *arg; 158 { 159 struct siop_softc *sc = arg; 160 siop_regmap_p rp; 161 int istat; 162 163 if (sc->sc_flags & SIOP_INTSOFF) 164 return (0); /* interrupts are not active */ 165 rp = sc->sc_siopp; 166 istat = rp->siop_istat; 167 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 168 return(0); 169 /* 170 * save interrupt status, DMA status, and SCSI status 0 171 * (may need to deal with stacked interrupts?) 172 */ 173 sc->sc_sstat0 = rp->siop_sstat0; 174 sc->sc_istat = istat; 175 sc->sc_dstat = rp->siop_dstat; 176 /* 177 * disable interrupts until the callback can process this 178 * interrupt. 179 */ 180 rp->siop_sien = 0; 181 rp->siop_dien = 0; 182 sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF; 183 add_sicallback((sifunc_t)siopintr, sc, NULL); 184 return(1); 185 } 186 187 #ifdef DEBUG 188 void 189 zssc_dump() 190 { 191 extern struct cfdriver zssc_cd; 192 int i; 193 194 for (i = 0; i < zssc_cd.cd_ndevs; ++i) 195 if (zssc_cd.cd_devs[i]) 196 siop_dump(zssc_cd.cd_devs[i]); 197 } 198 #endif 199
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