zssc.c revision 1.33
1 /* $NetBSD: zssc.c,v 1.33 2002/10/02 04:55:53 thorpej 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/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: zssc.c,v 1.33 2002/10/02 04:55:53 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/device.h> 46 #include <dev/scsipi/scsi_all.h> 47 #include <dev/scsipi/scsipi_all.h> 48 #include <dev/scsipi/scsiconf.h> 49 #include <amiga/amiga/custom.h> 50 #include <amiga/amiga/cc.h> 51 #include <amiga/amiga/device.h> 52 #include <amiga/amiga/isr.h> 53 #include <amiga/dev/siopreg.h> 54 #include <amiga/dev/siopvar.h> 55 #include <amiga/dev/zbusvar.h> 56 57 void zsscattach(struct device *, struct device *, void *); 58 int zsscmatch(struct device *, struct cfdata *, void *); 59 int zssc_dmaintr(void *); 60 #ifdef DEBUG 61 void zssc_dump(void); 62 #endif 63 64 CFATTACH_DECL(zssc, sizeof(struct siop_softc), 65 zsscmatch, zsscattach, NULL, NULL); 66 67 /* 68 * if we are an PPI Zeus 69 */ 70 int 71 zsscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 72 { 73 struct zbus_args *zap; 74 75 zap = auxp; 76 if (zap->manid == 2026 && zap->prodid == 150) 77 return(1); 78 return(0); 79 } 80 81 void 82 zsscattach(struct device *pdp, struct device *dp, void *auxp) 83 { 84 struct siop_softc *sc; 85 struct zbus_args *zap; 86 siop_regmap_p rp; 87 88 printf("\n"); 89 90 zap = auxp; 91 92 sc = (struct siop_softc *)dp; 93 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 0x4000); 94 95 /* 96 * CTEST7 = 00 97 */ 98 sc->sc_clock_freq = 66; /* Clock = 66Mhz */ 99 sc->sc_ctest7 = 0x00; 100 sc->sc_dcntl = 0x00; 101 102 alloc_sicallback(); 103 104 sc->sc_adapter.adapt_dev = &sc->sc_dev; 105 sc->sc_adapter.adapt_nchannels = 1; 106 sc->sc_adapter.adapt_openings = 7; 107 sc->sc_adapter.adapt_max_periph = 1; 108 sc->sc_adapter.adapt_ioctl = NULL; 109 sc->sc_adapter.adapt_minphys = siop_minphys; 110 sc->sc_adapter.adapt_request = siop_scsipi_request; 111 112 sc->sc_channel.chan_adapter = &sc->sc_adapter; 113 sc->sc_channel.chan_bustype = &scsi_bustype; 114 sc->sc_channel.chan_channel = 0; 115 sc->sc_channel.chan_ntargets = 8; 116 sc->sc_channel.chan_nluns = 8; 117 sc->sc_channel.chan_id = 7; 118 119 siopinitialize(sc); 120 121 sc->sc_isr.isr_intr = zssc_dmaintr; 122 sc->sc_isr.isr_arg = sc; 123 sc->sc_isr.isr_ipl = 6; 124 add_isr(&sc->sc_isr); 125 126 /* 127 * attach all scsi units on us 128 */ 129 config_found(dp, &sc->sc_channel, scsiprint); 130 } 131 132 /* 133 * Level 6 interrupt processing for the Progressive Peripherals Inc 134 * Zeus SCSI. Because the level 6 interrupt is above splbio, the 135 * interrupt status is saved and an sicallback to the level 2 interrupt 136 * handler scheduled. This way, the actual processing of the interrupt 137 * can be deferred until splbio is unblocked. 138 */ 139 140 int 141 zssc_dmaintr(void *arg) 142 { 143 struct siop_softc *sc = arg; 144 siop_regmap_p rp; 145 int istat; 146 147 if (sc->sc_flags & SIOP_INTSOFF) 148 return (0); /* interrupts are not active */ 149 rp = sc->sc_siopp; 150 istat = rp->siop_istat; 151 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 152 return(0); 153 /* 154 * save interrupt status, DMA status, and SCSI status 0 155 * (may need to deal with stacked interrupts?) 156 */ 157 sc->sc_sstat0 = rp->siop_sstat0; 158 sc->sc_istat = istat; 159 sc->sc_dstat = rp->siop_dstat; 160 /* 161 * disable interrupts until the callback can process this 162 * interrupt. 163 */ 164 rp->siop_sien = 0; 165 rp->siop_dien = 0; 166 sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF; 167 add_sicallback((sifunc_t)siopintr, sc, NULL); 168 return(1); 169 } 170 171 #ifdef DEBUG 172 void 173 zssc_dump(void) 174 { 175 extern struct cfdriver zssc_cd; 176 int i; 177 178 for (i = 0; i < zssc_cd.cd_ndevs; ++i) 179 if (zssc_cd.cd_devs[i]) 180 siop_dump(zssc_cd.cd_devs[i]); 181 } 182 #endif 183
Indexes created Sun Nov 02 07:10:05 GMT 2025