1 /* $NetBSD: cbiiisc.c,v 1.20 2012/01/10 20:29:50 rkujawa Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)dma.c 32 */ 33 34 /* 35 * Copyright (c) 1994,1998 Michael L. Hitch 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 * 57 * @(#)dma.c 58 */ 59 60 #include <sys/cdefs.h> 61 __KERNEL_RCSID(0, "$NetBSD: cbiiisc.c,v 1.20 2012/01/10 20:29:50 rkujawa Exp $"); 62 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/device.h> 67 #include <sys/cpu.h> 68 69 #include <dev/scsipi/scsi_all.h> 70 #include <dev/scsipi/scsipi_all.h> 71 #include <dev/scsipi/scsiconf.h> 72 #include <amiga/amiga/custom.h> 73 #include <amiga/amiga/cc.h> 74 #include <amiga/amiga/device.h> 75 #include <amiga/amiga/isr.h> 76 77 #define ARCH_720 /* This is for a 53c770 */ 78 79 #include <amiga/dev/siopreg.h> 80 #include <amiga/dev/siopvar.h> 81 #include <amiga/dev/zbusvar.h> 82 #include <amiga/dev/p5busvar.h> 83 84 void cbiiiscattach(struct device *, struct device *, void *); 85 int cbiiiscmatch(struct device *, struct cfdata *, void *); 86 int cbiiisc_dmaintr(void *); 87 #ifdef DEBUG 88 void cbiiisc_dump(void); 89 #endif 90 91 #ifdef DEBUG 92 #endif 93 94 CFATTACH_DECL(cbiiisc, sizeof(struct siop_softc), 95 cbiiiscmatch, cbiiiscattach, NULL, NULL); 96 97 /* 98 * if we are a CyberStorm MK III SCSI 99 */ 100 int 101 cbiiiscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 102 { 103 struct p5bus_attach_args *p5baa; 104 105 p5baa = (struct p5bus_attach_args *) auxp; 106 107 if (strcmp(p5baa->p5baa_name, "cbiiisc") == 0) 108 return 1; 109 110 return 0; 111 } 112 113 void 114 cbiiiscattach(struct device *pdp, struct device *dp, void *auxp) 115 { 116 struct siop_softc *sc = (struct siop_softc *)dp; 117 siop_regmap_p rp; 118 struct scsipi_adapter *adapt = &sc->sc_adapter; 119 struct scsipi_channel *chan = &sc->sc_channel; 120 121 aprint_normal(": CyberStorm PPC/Mk-III SCSI host adapter\n"); 122 123 sc->sc_siopp = rp = ztwomap(0xf40000); 124 /* siopng_dump_registers(sc); */ 125 126 /* 127 * CTEST7 = 00 128 */ 129 sc->sc_clock_freq = 50; /* Clock = 50 MHz >> */ 130 sc->sc_ctest7 = 0x00; 131 sc->sc_dcntl = 0x20; /* XXX ?? */ 132 133 /* 134 * Fill in the scsipi_adapter. 135 */ 136 memset(adapt, 0, sizeof(*adapt)); 137 adapt->adapt_dev = &sc->sc_dev; 138 adapt->adapt_nchannels = 1; 139 adapt->adapt_openings = 7; 140 adapt->adapt_max_periph = 1; 141 adapt->adapt_request = siopng_scsipi_request; 142 adapt->adapt_minphys = siopng_minphys; 143 144 /* 145 * Fill in the scsipi_channel. 146 */ 147 memset(chan, 0, sizeof(*chan)); 148 chan->chan_adapter = adapt; 149 chan->chan_bustype = &scsi_bustype; 150 chan->chan_channel = 0; 151 chan->chan_ntargets = 16; 152 chan->chan_nluns = 8; 153 chan->chan_id = 7; 154 155 siopnginitialize(sc); 156 157 if (sc->sc_channel.chan_ntargets < 0) 158 return; 159 160 sc->sc_isr.isr_intr = cbiiisc_dmaintr; 161 sc->sc_isr.isr_arg = sc; 162 sc->sc_isr.isr_ipl = 2; /* ?? */ 163 add_isr(&sc->sc_isr); 164 165 /* 166 * attach all scsi units on us 167 */ 168 config_found(dp, chan, scsiprint); 169 } 170 171 int 172 cbiiisc_dmaintr(void *arg) 173 { 174 struct siop_softc *sc = arg; 175 siop_regmap_p rp; 176 int istat; 177 178 if (sc->sc_flags & SIOP_INTSOFF) 179 return (0); /* interrupts are not active */ 180 rp = sc->sc_siopp; 181 amiga_membarrier(); 182 istat = rp->siop_istat; 183 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 184 return(0); 185 /* 186 * save interrupt status, DMA status, and SCSI status 0 187 * (may need to deal with stacked interrupts?) 188 */ 189 sc->sc_sist = rp->siop_sist; 190 sc->sc_istat = istat; 191 sc->sc_dstat = rp->siop_dstat; 192 amiga_membarrier(); 193 siopngintr(sc); 194 return(1); 195 } 196 197 #ifdef DEBUG 198 void 199 cbiiisc_dump(void) 200 { 201 extern struct cfdriver cbiiisc_cd; 202 struct siop_softc *sc; 203 int i; 204 205 for (i = 0; i < cbiiisc_cd.cd_ndevs; ++i) { 206 sc = device_lookup_private(&cbiiisc_cd, i); 207 if (sc != NULL) 208 siopng_dump(sc); 209 } 210 } 211 #endif 212