1 /* $NetBSD: afsc.c,v 1.3 1994/12/01 17:24:49 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 afscprint __P((void *auxp, char *)); 53 void afscattach __P((struct device *, struct device *, void *)); 54 int afscmatch __P((struct device *, struct cfdata *, void *)); 55 int siopintr __P((struct siop_softc *)); 56 57 struct scsi_adapter afsc_scsiswitch = { 58 siop_scsicmd, 59 siop_minphys, 60 0, /* no lun support */ 61 0, /* no lun support */ 62 siop_adinfo, 63 "afsc", 64 }; 65 66 struct scsi_device afsc_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 "afsc", 72 0, 73 }; 74 75 76 #ifdef DEBUG 77 #endif 78 79 struct cfdriver afsccd = { 80 NULL, "afsc", (cfmatch_t)afscmatch, afscattach, 81 DV_DULL, sizeof(struct siop_softc), NULL, 0 }; 82 83 /* 84 * if we are a Commodore Amiga A4091 85 */ 86 int 87 afscmatch(pdp, cdp, auxp) 88 struct device *pdp; 89 struct cfdata *cdp; 90 void *auxp; 91 { 92 struct zthreebus_args *zap; 93 94 zap = auxp; 95 if (zap->manid == 514 && zap->prodid == 84) 96 return(1); 97 return(0); 98 } 99 100 void 101 afscattach(pdp, dp, auxp) 102 struct device *pdp, *dp; 103 void *auxp; 104 { 105 struct siop_softc *sc; 106 struct zthreebus_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 + 0x00800000; 115 116 /* 117 * DCNTL = 37.51->50MHZ / SCLK/2 118 * CTEST7 = 80 [disable burst] 119 */ 120 sc->sc_clock_freq = 0x8000; 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 = &afsc_scsiswitch; 128 sc->sc_link.device = &afsc_scsidev; 129 TAILQ_INIT(&sc->sc_xslist); 130 131 custom.intreq = INTF_PORTS; 132 custom.intena = INTF_SETCLR | INTF_PORTS; 133 134 /* 135 * attach all scsi units on us 136 */ 137 config_found(dp, &sc->sc_link, afscprint); 138 } 139 140 /* 141 * print diag if pnp is NULL else just extra 142 */ 143 int 144 afscprint(auxp, pnp) 145 void *auxp; 146 char *pnp; 147 { 148 if (pnp == NULL) 149 return(UNCONF); 150 return(QUIET); 151 } 152 153 int 154 afsc_dmaintr() 155 { 156 siop_regmap_p rp; 157 struct siop_softc *dev; 158 int i, found; 159 u_char istat; 160 161 found = 0; 162 for (i = 0; i < afsccd.cd_ndevs; i++) { 163 dev = afsccd.cd_devs[i]; 164 if (dev == NULL) 165 continue; 166 rp = dev->sc_siopp; 167 istat = rp->siop_istat; 168 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 169 continue; 170 if ((dev->sc_flags & (SIOP_DMA | SIOP_SELECTED)) == SIOP_SELECTED) 171 continue; /* doing non-interrupt I/O */ 172 found++; 173 dev->sc_istat = istat; 174 dev->sc_dstat = rp->siop_dstat; 175 dev->sc_sstat0 = rp->siop_sstat0; 176 siopintr(dev); 177 } 178 return(found); 179 } 180