zssc.c revision 1.34
1 /* $NetBSD: zssc.c,v 1.34 2003/04/09 01:54:44 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 1.34 2003/04/09 01:54:44 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/device.h> 46 47 #include <uvm/uvm_extern.h> 48 49 #include <dev/scsipi/scsi_all.h> 50 #include <dev/scsipi/scsipi_all.h> 51 #include <dev/scsipi/scsiconf.h> 52 #include <amiga/amiga/custom.h> 53 #include <amiga/amiga/cc.h> 54 #include <amiga/amiga/device.h> 55 #include <amiga/amiga/isr.h> 56 #include <amiga/dev/siopreg.h> 57 #include <amiga/dev/siopvar.h> 58 #include <amiga/dev/zbusvar.h> 59 60 void zsscattach(struct device *, struct device *, void *); 61 int zsscmatch(struct device *, struct cfdata *, void *); 62 int zssc_dmaintr(void *); 63 #ifdef DEBUG 64 void zssc_dump(void); 65 #endif 66 67 CFATTACH_DECL(zssc, sizeof(struct siop_softc), 68 zsscmatch, zsscattach, NULL, NULL); 69 70 /* 71 * if we are an PPI Zeus 72 */ 73 int 74 zsscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 75 { 76 struct zbus_args *zap; 77 78 zap = auxp; 79 if (zap->manid == 2026 && zap->prodid == 150) 80 return(1); 81 return(0); 82 } 83 84 void 85 zsscattach(struct device *pdp, struct device *dp, void *auxp) 86 { 87 struct siop_softc *sc; 88 struct zbus_args *zap; 89 siop_regmap_p rp; 90 91 printf("\n"); 92 93 zap = auxp; 94 95 sc = (struct siop_softc *)dp; 96 sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 0x4000); 97 98 /* 99 * CTEST7 = 00 100 */ 101 sc->sc_clock_freq = 66; /* Clock = 66Mhz */ 102 sc->sc_ctest7 = 0x00; 103 sc->sc_dcntl = 0x00; 104 105 alloc_sicallback(); 106 107 sc->sc_adapter.adapt_dev = &sc->sc_dev; 108 sc->sc_adapter.adapt_nchannels = 1; 109 sc->sc_adapter.adapt_openings = 7; 110 sc->sc_adapter.adapt_max_periph = 1; 111 sc->sc_adapter.adapt_ioctl = NULL; 112 sc->sc_adapter.adapt_minphys = siop_minphys; 113 sc->sc_adapter.adapt_request = siop_scsipi_request; 114 115 sc->sc_channel.chan_adapter = &sc->sc_adapter; 116 sc->sc_channel.chan_bustype = &scsi_bustype; 117 sc->sc_channel.chan_channel = 0; 118 sc->sc_channel.chan_ntargets = 8; 119 sc->sc_channel.chan_nluns = 8; 120 sc->sc_channel.chan_id = 7; 121 122 siopinitialize(sc); 123 124 sc->sc_isr.isr_intr = zssc_dmaintr; 125 sc->sc_isr.isr_arg = sc; 126 sc->sc_isr.isr_ipl = 6; 127 add_isr(&sc->sc_isr); 128 129 /* 130 * attach all scsi units on us 131 */ 132 config_found(dp, &sc->sc_channel, scsiprint); 133 } 134 135 /* 136 * Level 6 interrupt processing for the Progressive Peripherals Inc 137 * Zeus SCSI. Because the level 6 interrupt is above splbio, the 138 * interrupt status is saved and an sicallback to the level 2 interrupt 139 * handler scheduled. This way, the actual processing of the interrupt 140 * can be deferred until splbio is unblocked. 141 */ 142 143 int 144 zssc_dmaintr(void *arg) 145 { 146 struct siop_softc *sc = arg; 147 siop_regmap_p rp; 148 int istat; 149 150 if (sc->sc_flags & SIOP_INTSOFF) 151 return (0); /* interrupts are not active */ 152 rp = sc->sc_siopp; 153 istat = rp->siop_istat; 154 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 155 return(0); 156 /* 157 * save interrupt status, DMA status, and SCSI status 0 158 * (may need to deal with stacked interrupts?) 159 */ 160 sc->sc_sstat0 = rp->siop_sstat0; 161 sc->sc_istat = istat; 162 sc->sc_dstat = rp->siop_dstat; 163 /* 164 * disable interrupts until the callback can process this 165 * interrupt. 166 */ 167 rp->siop_sien = 0; 168 rp->siop_dien = 0; 169 sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF; 170 add_sicallback((sifunc_t)siopintr, sc, NULL); 171 return(1); 172 } 173 174 #ifdef DEBUG 175 void 176 zssc_dump(void) 177 { 178 extern struct cfdriver zssc_cd; 179 int i; 180 181 for (i = 0; i < zssc_cd.cd_ndevs; ++i) 182 if (zssc_cd.cd_devs[i]) 183 siop_dump(zssc_cd.cd_devs[i]); 184 } 185 #endif 186
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