1 /* $NetBSD: mgnsc.c,v 1.7 1994/12/01 17:25:26 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/zthreebusvar.h> 51 52 int mgnscprint __P((void *auxp, char *)); 53 void mgnscattach __P((struct device *, struct device *, void *)); 54 int mgnscmatch __P((struct device *, struct cfdata *, void *)); 55 56 struct scsi_adapter mgnsc_scsiswitch = { 57 siop_scsicmd, 58 siop_minphys, 59 0, /* no lun support */ 60 0, /* no lun support */ 61 siop_adinfo, 62 "mgnsc", 63 }; 64 65 struct scsi_device mgnsc_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 "mgnsc", 71 0, 72 }; 73 74 75 #ifdef DEBUG 76 #endif 77 78 struct cfdriver mgnsccd = { 79 NULL, "mgnsc", (cfmatch_t)mgnscmatch, mgnscattach, 80 DV_DULL, sizeof(struct siop_softc), NULL, 0 }; 81 82 /* 83 * if we are a CSA Magnum 40 SCSI 84 */ 85 int 86 mgnscmatch(pdp, cdp, auxp) 87 struct device *pdp; 88 struct cfdata *cdp; 89 void *auxp; 90 { 91 struct zthreebus_args *zap; 92 93 zap = auxp; 94 if (zap->manid == 1058 && zap->prodid == 17) 95 return(1); 96 return(0); 97 } 98 99 void 100 mgnscattach(pdp, dp, auxp) 101 struct device *pdp, *dp; 102 void *auxp; 103 { 104 struct siop_softc *sc; 105 struct zthreebus_args *zap; 106 siop_regmap_p rp; 107 108 printf("\n"); 109 zap = auxp; 110 111 sc = (struct siop_softc *)dp; 112 sc->sc_siopp = rp = zap->va + 0x8000; 113 114 /* 115 * DCNTL = 25.01->37.5MHZ / SCLK/1.5 116 * CTEST7 = TT1 117 */ 118 sc->sc_clock_freq = 0x0240; 119 120 siopinitialize(sc); 121 122 sc->sc_link.adapter_softc = sc; 123 sc->sc_link.adapter_targ = 7; 124 sc->sc_link.adapter = &mgnsc_scsiswitch; 125 sc->sc_link.device = &mgnsc_scsidev; 126 TAILQ_INIT(&sc->sc_xslist); 127 128 custom.intreq = INTF_PORTS; 129 custom.intena = INTF_SETCLR | INTF_PORTS; 130 131 /* 132 * attach all scsi units on us 133 */ 134 config_found(dp, &sc->sc_link, mgnscprint); 135 } 136 137 /* 138 * print diag if pnp is NULL else just extra 139 */ 140 int 141 mgnscprint(auxp, pnp) 142 void *auxp; 143 char *pnp; 144 { 145 if (pnp == NULL) 146 return(UNCONF); 147 return(QUIET); 148 } 149 150 151 int 152 mgnsc_dmaintr() 153 { 154 siop_regmap_p rp; 155 struct siop_softc *dev; 156 int i, found; 157 u_char istat; 158 159 found = 0; 160 for (i = 0; i < mgnsccd.cd_ndevs; i++) { 161 dev = mgnsccd.cd_devs[i]; 162 if (dev == NULL) 163 continue; 164 rp = dev->sc_siopp; 165 istat = rp->siop_istat; 166 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 167 continue; 168 if ((dev->sc_flags & (SIOP_DMA | SIOP_SELECTED)) == SIOP_SELECTED) 169 continue; /* doing non-interrupt I/O */ 170 found++; 171 dev->sc_istat = istat; 172 dev->sc_dstat = rp->siop_dstat; 173 dev->sc_sstat0 = rp->siop_sstat0; 174 siopintr(dev); 175 } 176 return(found); 177 } 178