zssc.c revision 1.2
1 /* 2 * Copyright (c) 1994 Michael L. Hitch 3 * Copyright (c) 1982, 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)dma.c 35 * $Id: zssc.c,v 1.2 1994/05/12 05:57:26 chopps Exp $ 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/device.h> 42 #include <scsi/scsi_all.h> 43 #include <scsi/scsiconf.h> 44 #include <amiga/amiga/custom.h> 45 #include <amiga/amiga/cc.h> 46 #include <amiga/amiga/device.h> 47 #include <amiga/dev/siopreg.h> 48 #include <amiga/dev/siopvar.h> 49 #include <amiga/dev/ztwobusvar.h> 50 51 int zsscprint __P((void *auxp, char *)); 52 void zsscattach __P((struct device *, struct device *, void *)); 53 int zsscmatch __P((struct device *, struct cfdata *, void *)); 54 int siopintr __P((struct siop_softc *)); 55 56 struct scsi_adapter zssc_scsiswitch = { 57 siop_scsicmd, 58 siop_minphys, 59 0, /* no lun support */ 60 0, /* no lun support */ 61 siop_adinfo, 62 "zssc", 63 }; 64 65 struct scsi_device zssc_scsidev = { 66 NULL, /* use default error handler */ 67 NULL, /* do not have a start functio */ 68 NULL, /* have no async handler */ 69 NULL, /* Use default done routine */ 70 "zssc", 71 0, 72 }; 73 74 75 #ifdef DEBUG 76 #endif 77 78 struct cfdriver zssccd = { 79 NULL, "zssc", zsscmatch, zsscattach, 80 DV_DULL, sizeof(struct siop_softc), NULL, 0 }; 81 82 /* 83 * if we are an PPI Zeus 84 */ 85 int 86 zsscmatch(pdp, cdp, auxp) 87 struct device *pdp; 88 struct cfdata *cdp; 89 void *auxp; 90 { 91 struct ztwobus_args *zap; 92 93 zap = auxp; 94 if (zap->manid == 2026 && zap->prodid == 150) 95 return(1); 96 return(0); 97 } 98 99 void 100 zsscattach(pdp, dp, auxp) 101 struct device *pdp, *dp; 102 void *auxp; 103 { 104 struct siop_softc *sc; 105 struct ztwobus_args *zap; 106 siop_regmap_p rp; 107 108 zap = auxp; 109 110 sc = (struct siop_softc *)dp; 111 sc->sc_siopp = rp = zap->va + 0x4000; 112 113 /* 114 * DCNTL = 50.01->66MHZ / SCLK/3 115 * CTEST7 = 00 116 */ 117 sc->sc_clock_freq = 0xc0; 118 119 120 siopreset(sc); 121 122 sc->sc_link.adapter_softc = sc; 123 sc->sc_link.adapter_targ = 7; 124 sc->sc_link.adapter = &zssc_scsiswitch; 125 sc->sc_link.device = &zssc_scsidev; 126 TAILQ_INIT(&sc->sc_xslist); 127 128 #if 0 129 custom.intreq = INTF_EXTER; 130 custom.intena = INTF_SETCLR | INTF_EXTER; 131 #endif 132 133 /* 134 * attach all scsi units on us 135 */ 136 config_found(dp, &sc->sc_link, zsscprint); 137 } 138 139 /* 140 * print diag if pnp is NULL else just extra 141 */ 142 int 143 zsscprint(auxp, pnp) 144 void *auxp; 145 char *pnp; 146 { 147 if (pnp == NULL) 148 return(UNCONF); 149 return(QUIET); 150 } 151 152 153 /* 154 * Level 6 interrupt processing for the Progressive Peripherals Inc 155 * Zeus SCSI. Because the level 6 interrupt is above splbio, the 156 * interrupt status is saved and an sicallback to the level 2 interrupt 157 * handler scheduled. This way, the actual processing of the interrupt 158 * can be deferred until splbio is unblocked. 159 */ 160 161 #if 0 162 int 163 zssc_dmaintr() 164 #else 165 int 166 siopintr6 () 167 #endif 168 { 169 siop_regmap_p rp; 170 struct siop_softc *dev; 171 int i, istat, found; 172 173 found = 0; 174 for (i = 0; i < zssccd.cd_ndevs; i++) { 175 dev = zssccd.cd_devs[i]; 176 if (dev == NULL) 177 continue; 178 rp = dev->sc_siopp; 179 istat = rp->siop_istat; 180 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 181 continue; 182 if ((dev->sc_flags & (SIOP_DMA | SIOP_SELECTED)) == SIOP_SELECTED) 183 continue; /* doing non-interrupt I/O */ 184 found++; 185 dev->sc_istat = istat; 186 dev->sc_dstat = rp->siop_dstat; 187 dev->sc_sstat0 = rp->siop_sstat0; 188 custom.intreq = INTF_EXTER; 189 add_sicallback (siopintr, dev, NULL); 190 } 191 return(found); 192 } 193
Indexes created Sun Nov 02 07:10:05 GMT 2025