zssc.c revision 1.6
1 /* $NetBSD: zssc.c,v 1.6 1994/10/26 02:05:15 cgd 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/dev/siopreg.h> 49 #include <amiga/dev/siopvar.h> 50 #include <amiga/dev/ztwobusvar.h> 51 52 int zsscprint __P((void *auxp, char *)); 53 void zsscattach __P((struct device *, struct device *, void *)); 54 int zsscmatch __P((struct device *, struct cfdata *, void *)); 55 int siopintr __P((struct siop_softc *)); 56 57 struct scsi_adapter zssc_scsiswitch = { 58 siop_scsicmd, 59 siop_minphys, 60 0, /* no lun support */ 61 0, /* no lun support */ 62 siop_adinfo, 63 "zssc", 64 }; 65 66 struct scsi_device zssc_scsidev = { 67 NULL, /* use default error handler */ 68 NULL, /* do not have a start functio */ 69 NULL, /* have no async handler */ 70 NULL, /* Use default done routine */ 71 "zssc", 72 0, 73 }; 74 75 76 #ifdef DEBUG 77 #endif 78 79 struct cfdriver zssccd = { 80 NULL, "zssc", zsscmatch, zsscattach, 81 DV_DULL, sizeof(struct siop_softc), NULL, 0 }; 82 83 /* 84 * if we are an PPI Zeus 85 */ 86 int 87 zsscmatch(pdp, cdp, auxp) 88 struct device *pdp; 89 struct cfdata *cdp; 90 void *auxp; 91 { 92 struct ztwobus_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 ztwobus_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 * DCNTL = 50.01->66MHZ / SCLK/3 118 * CTEST7 = 00 119 */ 120 sc->sc_clock_freq = 0xc0; 121 122 123 siopinitialize(sc); 124 125 sc->sc_link.adapter_softc = sc; 126 sc->sc_link.adapter_targ = 7; 127 sc->sc_link.adapter = &zssc_scsiswitch; 128 sc->sc_link.device = &zssc_scsidev; 129 TAILQ_INIT(&sc->sc_xslist); 130 131 #if 1 132 custom.intreq = INTF_EXTER; 133 custom.intena = INTF_SETCLR | INTF_EXTER; 134 #endif 135 136 /* 137 * attach all scsi units on us 138 */ 139 config_found(dp, &sc->sc_link, zsscprint); 140 } 141 142 /* 143 * print diag if pnp is NULL else just extra 144 */ 145 int 146 zsscprint(auxp, pnp) 147 void *auxp; 148 char *pnp; 149 { 150 if (pnp == NULL) 151 return(UNCONF); 152 return(QUIET); 153 } 154 155 156 /* 157 * Level 6 interrupt processing for the Progressive Peripherals Inc 158 * Zeus SCSI. Because the level 6 interrupt is above splbio, the 159 * interrupt status is saved and an sicallback to the level 2 interrupt 160 * handler scheduled. This way, the actual processing of the interrupt 161 * can be deferred until splbio is unblocked. 162 */ 163 164 #if 0 165 int 166 zssc_dmaintr() 167 #else 168 int 169 siopintr6 () 170 #endif 171 { 172 siop_regmap_p rp; 173 struct siop_softc *dev; 174 int i, istat, found; 175 176 found = 0; 177 for (i = 0; i < zssccd.cd_ndevs; i++) { 178 dev = zssccd.cd_devs[i]; 179 if (dev == NULL) 180 continue; 181 rp = dev->sc_siopp; 182 istat = rp->siop_istat; 183 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 184 continue; 185 if ((dev->sc_flags & (SIOP_DMA | SIOP_SELECTED)) == SIOP_SELECTED) 186 continue; /* doing non-interrupt I/O */ 187 found++; 188 dev->sc_istat = istat; 189 dev->sc_dstat = rp->siop_dstat; 190 dev->sc_sstat0 = rp->siop_sstat0; 191 custom.intreq = INTF_EXTER; 192 add_sicallback (siopintr, dev, NULL); 193 } 194 return(found); 195 } 196
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