1 /* $NetBSD: wesc.c,v 1.8 1995/02/12 19:19:30 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/amiga/isr.h> 49 #include <amiga/dev/siopreg.h> 50 #include <amiga/dev/siopvar.h> 51 #include <amiga/dev/zbusvar.h> 52 53 int wescprint __P((void *auxp, char *)); 54 void wescattach __P((struct device *, struct device *, void *)); 55 int wescmatch __P((struct device *, struct cfdata *, void *)); 56 int wesc_dmaintr __P((struct siop_softc *)); 57 58 struct scsi_adapter wesc_scsiswitch = { 59 siop_scsicmd, 60 siop_minphys, 61 0, /* no lun support */ 62 0, /* no lun support */ 63 }; 64 65 struct scsi_device wesc_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 }; 71 72 73 #ifdef DEBUG 74 #endif 75 76 struct cfdriver wesccd = { 77 NULL, "wesc", (cfmatch_t)wescmatch, wescattach, 78 DV_DULL, sizeof(struct siop_softc), NULL, 0 }; 79 80 /* 81 * if we are an MacroSystemsUS Warp Engine 82 */ 83 int 84 wescmatch(pdp, cdp, auxp) 85 struct device *pdp; 86 struct cfdata *cdp; 87 void *auxp; 88 { 89 struct zbus_args *zap; 90 91 zap = auxp; 92 if (zap->manid == 2203 && zap->prodid == 19) 93 return(1); 94 return(0); 95 } 96 97 void 98 wescattach(pdp, dp, auxp) 99 struct device *pdp, *dp; 100 void *auxp; 101 { 102 struct siop_softc *sc; 103 struct zbus_args *zap; 104 siop_regmap_p rp; 105 106 printf("\n"); 107 108 zap = auxp; 109 110 sc = (struct siop_softc *)dp; 111 sc->sc_siopp = rp = zap->va + 0x40000; 112 113 /* 114 * DCNTL = 37.51->50.00MHZ / SCLK/2 115 * CTEST7 = SC0, TT1 116 */ 117 sc->sc_clock_freq = 0x2200; 118 119 siopinitialize(sc); 120 121 sc->sc_link.adapter_softc = sc; 122 sc->sc_link.adapter_target = 7; 123 sc->sc_link.adapter = &wesc_scsiswitch; 124 sc->sc_link.device = &wesc_scsidev; 125 sc->sc_link.openings = 1; 126 TAILQ_INIT(&sc->sc_xslist); 127 128 sc->sc_isr.isr_intr = wesc_dmaintr; 129 sc->sc_isr.isr_arg = sc; 130 sc->sc_isr.isr_ipl = 2; 131 add_isr (&sc->sc_isr); 132 133 /* 134 * attach all scsi units on us 135 */ 136 config_found(dp, &sc->sc_link, wescprint); 137 } 138 139 /* 140 * print diag if pnp is NULL else just extra 141 */ 142 int 143 wescprint(auxp, pnp) 144 void *auxp; 145 char *pnp; 146 { 147 if (pnp == NULL) 148 return(UNCONF); 149 return(QUIET); 150 } 151 152 153 int 154 wesc_dmaintr(sc) 155 struct siop_softc *sc; 156 { 157 siop_regmap_p rp; 158 u_char istat; 159 160 rp = sc->sc_siopp; 161 istat = rp->siop_istat; 162 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 163 return (0); 164 if ((rp->siop_sien | rp->siop_dien) == 0) 165 return(0); /* no interrupts enabled */ 166 /* 167 * save interrupt status, DMA status, and SCSI status 0 168 * (may need to deal with stacked interrupts?) 169 */ 170 sc->sc_istat = istat; 171 sc->sc_dstat = rp->siop_dstat; 172 sc->sc_sstat0 = rp->siop_sstat0; 173 siopintr(sc); 174 return(1); 175 } 176