zssc.c revision 1.31
1 /* $NetBSD: zssc.c,v 1.31 2002/01/28 09:57:04 aymeric 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 1.31 2002/01/28 09:57:04 aymeric 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 struct cfattach zssc_ca = { 65 sizeof(struct siop_softc), zsscmatch, zsscattach 66 }; 67 68 /* 69 * if we are an PPI Zeus 70 */ 71 int 72 zsscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 73 { 74 struct zbus_args *zap; 75 76 zap = auxp; 77 if (zap->manid == 2026 && zap->prodid == 150) 78 return(1); 79 return(0); 80 } 81 82 void 83 zsscattach(struct device *pdp, struct device *dp, void *auxp) 84 { 85 struct siop_softc *sc; 86 struct zbus_args *zap; 87 siop_regmap_p rp; 88 89 printf("\n"); 90 91 zap = auxp; 92 93 sc = (struct siop_softc *)dp; 94 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 0x4000); 95 96 /* 97 * CTEST7 = 00 98 */ 99 sc->sc_clock_freq = 66; /* Clock = 66Mhz */ 100 sc->sc_ctest7 = 0x00; 101 sc->sc_dcntl = 0x00; 102 103 alloc_sicallback(); 104 105 sc->sc_adapter.adapt_dev = &sc->sc_dev; 106 sc->sc_adapter.adapt_nchannels = 1; 107 sc->sc_adapter.adapt_openings = 7; 108 sc->sc_adapter.adapt_max_periph = 1; 109 sc->sc_adapter.adapt_ioctl = NULL; 110 sc->sc_adapter.adapt_minphys = siop_minphys; 111 sc->sc_adapter.adapt_request = siop_scsipi_request; 112 113 sc->sc_channel.chan_adapter = &sc->sc_adapter; 114 sc->sc_channel.chan_bustype = &scsi_bustype; 115 sc->sc_channel.chan_channel = 0; 116 sc->sc_channel.chan_ntargets = 8; 117 sc->sc_channel.chan_nluns = 8; 118 sc->sc_channel.chan_id = 7; 119 120 siopinitialize(sc); 121 122 sc->sc_isr.isr_intr = zssc_dmaintr; 123 sc->sc_isr.isr_arg = sc; 124 sc->sc_isr.isr_ipl = 6; 125 add_isr(&sc->sc_isr); 126 127 /* 128 * attach all scsi units on us 129 */ 130 config_found(dp, &sc->sc_channel, scsiprint); 131 } 132 133 /* 134 * Level 6 interrupt processing for the Progressive Peripherals Inc 135 * Zeus SCSI. Because the level 6 interrupt is above splbio, the 136 * interrupt status is saved and an sicallback to the level 2 interrupt 137 * handler scheduled. This way, the actual processing of the interrupt 138 * can be deferred until splbio is unblocked. 139 */ 140 141 int 142 zssc_dmaintr(void *arg) 143 { 144 struct siop_softc *sc = arg; 145 siop_regmap_p rp; 146 int istat; 147 148 if (sc->sc_flags & SIOP_INTSOFF) 149 return (0); /* interrupts are not active */ 150 rp = sc->sc_siopp; 151 istat = rp->siop_istat; 152 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 153 return(0); 154 /* 155 * save interrupt status, DMA status, and SCSI status 0 156 * (may need to deal with stacked interrupts?) 157 */ 158 sc->sc_sstat0 = rp->siop_sstat0; 159 sc->sc_istat = istat; 160 sc->sc_dstat = rp->siop_dstat; 161 /* 162 * disable interrupts until the callback can process this 163 * interrupt. 164 */ 165 rp->siop_sien = 0; 166 rp->siop_dien = 0; 167 sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF; 168 add_sicallback((sifunc_t)siopintr, sc, NULL); 169 return(1); 170 } 171 172 #ifdef DEBUG 173 void 174 zssc_dump(void) 175 { 176 extern struct cfdriver zssc_cd; 177 int i; 178 179 for (i = 0; i < zssc_cd.cd_ndevs; ++i) 180 if (zssc_cd.cd_devs[i]) 181 siop_dump(zssc_cd.cd_devs[i]); 182 } 183 #endif 184
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