zssc.c revision 1.9
1 /* $NetBSD: zssc.c,v 1.9 1995/01/05 07:22:55 chopps 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/zbusvar.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 }; 63 64 struct scsi_device zssc_scsidev = { 65 NULL, /* use default error handler */ 66 NULL, /* do not have a start functio */ 67 NULL, /* have no async handler */ 68 NULL, /* Use default done routine */ 69 }; 70 71 72 #ifdef DEBUG 73 #endif 74 75 struct cfdriver zssccd = { 76 NULL, "zssc", (cfmatch_t)zsscmatch, zsscattach, 77 DV_DULL, sizeof(struct siop_softc), NULL, 0 }; 78 79 /* 80 * if we are an PPI Zeus 81 */ 82 int 83 zsscmatch(pdp, cdp, auxp) 84 struct device *pdp; 85 struct cfdata *cdp; 86 void *auxp; 87 { 88 struct zbus_args *zap; 89 90 zap = auxp; 91 if (zap->manid == 2026 && zap->prodid == 150) 92 return(1); 93 return(0); 94 } 95 96 void 97 zsscattach(pdp, dp, auxp) 98 struct device *pdp, *dp; 99 void *auxp; 100 { 101 struct siop_softc *sc; 102 struct zbus_args *zap; 103 siop_regmap_p rp; 104 105 printf("\n"); 106 107 zap = auxp; 108 109 sc = (struct siop_softc *)dp; 110 sc->sc_siopp = rp = zap->va + 0x4000; 111 112 /* 113 * DCNTL = 50.01->66MHZ / SCLK/3 114 * CTEST7 = 00 115 */ 116 sc->sc_clock_freq = 0xc0; 117 118 alloc_sicallback(); 119 siopinitialize(sc); 120 121 sc->sc_link.adapter_softc = sc; 122 sc->sc_link.adapter_target = 7; 123 sc->sc_link.adapter = &zssc_scsiswitch; 124 sc->sc_link.device = &zssc_scsidev; 125 sc->sc_link.openings = 1; 126 TAILQ_INIT(&sc->sc_xslist); 127 128 #if 1 129 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
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