zssc.c revision 1.16
1 /* $NetBSD: zssc.c,v 1.16 1996/04/21 21:12:45 veego 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 <scsi/scsi_all.h> 44 #include <scsi/scsiconf.h> 45 #include <amiga/amiga/custom.h> 46 #include <amiga/amiga/cc.h> 47 #include <amiga/amiga/device.h> 48 #include <amiga/amiga/isr.h> 49 #include <amiga/dev/siopreg.h> 50 #include <amiga/dev/siopvar.h> 51 #include <amiga/dev/zbusvar.h> 52 53 int zsscprint __P((void *auxp, char *)); 54 void zsscattach __P((struct device *, struct device *, void *)); 55 int zsscmatch __P((struct device *, void *, void *)); 56 int zssc_dmaintr __P((void *)); 57 #ifdef DEBUG 58 void zssc_dump __P((void)); 59 #endif 60 61 struct scsi_adapter zssc_scsiswitch = { 62 siop_scsicmd, 63 siop_minphys, 64 0, /* no lun support */ 65 0, /* no lun support */ 66 }; 67 68 struct scsi_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 struct cfdriver zssc_cd = { 84 NULL, "zssc", DV_DULL, NULL, 0 85 }; 86 87 /* 88 * if we are an PPI Zeus 89 */ 90 int 91 zsscmatch(pdp, match, auxp) 92 struct device *pdp; 93 void *match, *auxp; 94 { 95 struct zbus_args *zap; 96 97 zap = auxp; 98 if (zap->manid == 2026 && zap->prodid == 150) 99 return(1); 100 return(0); 101 } 102 103 void 104 zsscattach(pdp, dp, auxp) 105 struct device *pdp, *dp; 106 void *auxp; 107 { 108 struct siop_softc *sc; 109 struct zbus_args *zap; 110 siop_regmap_p rp; 111 112 printf("\n"); 113 114 zap = auxp; 115 116 sc = (struct siop_softc *)dp; 117 sc->sc_siopp = rp = zap->va + 0x4000; 118 119 /* 120 * CTEST7 = 00 121 */ 122 sc->sc_clock_freq = 66; /* Clock = 66Mhz */ 123 sc->sc_ctest7 = 0x00; 124 sc->sc_dcntl = 0x00; 125 126 alloc_sicallback(); 127 128 sc->sc_link.adapter_softc = sc; 129 sc->sc_link.adapter_target = 7; 130 sc->sc_link.adapter = &zssc_scsiswitch; 131 sc->sc_link.device = &zssc_scsidev; 132 sc->sc_link.openings = 2; 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, zsscprint); 145 } 146 147 /* 148 * print diag if pnp is NULL else just extra 149 */ 150 int 151 zsscprint(auxp, pnp) 152 void *auxp; 153 char *pnp; 154 { 155 if (pnp == NULL) 156 return(UNCONF); 157 return(QUIET); 158 } 159 160 161 /* 162 * Level 6 interrupt processing for the Progressive Peripherals Inc 163 * Zeus SCSI. Because the level 6 interrupt is above splbio, the 164 * interrupt status is saved and an sicallback to the level 2 interrupt 165 * handler scheduled. This way, the actual processing of the interrupt 166 * can be deferred until splbio is unblocked. 167 */ 168 169 int 170 zssc_dmaintr(arg) 171 void *arg; 172 { 173 struct siop_softc *sc = arg; 174 siop_regmap_p rp; 175 int istat; 176 177 if (sc->sc_flags & SIOP_INTSOFF) 178 return (0); /* interrupts are not active */ 179 rp = sc->sc_siopp; 180 istat = rp->siop_istat; 181 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 182 return(0); 183 /* 184 * save interrupt status, DMA status, and SCSI status 0 185 * (may need to deal with stacked interrupts?) 186 */ 187 sc->sc_sstat0 = rp->siop_sstat0; 188 sc->sc_istat = istat; 189 sc->sc_dstat = rp->siop_dstat; 190 /* 191 * disable interrupts until the callback can process this 192 * interrupt. 193 */ 194 rp->siop_sien = 0; 195 rp->siop_dien = 0; 196 sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF; 197 add_sicallback((sifunc_t)siopintr, sc, NULL); 198 return(1); 199 } 200 201 #ifdef DEBUG 202 void 203 zssc_dump() 204 { 205 int i; 206 207 for (i = 0; i < zssc_cd.cd_ndevs; ++i) 208 if (zssc_cd.cd_devs[i]) 209 siop_dump(zssc_cd.cd_devs[i]); 210 } 211 #endif 212
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