1 /* $NetBSD: bppcsc.c,v 1.5 2021/08/07 16:18:41 thorpej 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) 2011 Radoslaw Kujawa 36 * Copyright (c) 1994 Michael L. Hitch 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 50 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 51 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 52 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 53 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 54 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 55 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 56 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 57 * 58 * @(#)dma.c 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: bppcsc.c,v 1.5 2021/08/07 16:18:41 thorpej Exp $"); 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/device.h> 68 69 #include <uvm/uvm_extern.h> 70 71 #include <dev/scsipi/scsi_all.h> 72 #include <dev/scsipi/scsipi_all.h> 73 #include <dev/scsipi/scsiconf.h> 74 75 #include <amiga/amiga/custom.h> 76 #include <amiga/amiga/cc.h> 77 #include <amiga/amiga/device.h> 78 #include <amiga/amiga/isr.h> 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 #define BPPC_SCSI_OFF 0xf40000 85 #define BPPC_PUPROM_OFF 0xf00010 86 87 void bppcscattach(device_t, device_t, void *); 88 int bppcscmatch(device_t, cfdata_t, void *); 89 int bppcsc_dmaintr(void *); 90 #ifdef DEBUG 91 void bppcsc_dump(void); 92 #endif 93 94 CFATTACH_DECL_NEW(bppcsc, sizeof(struct siop_softc), 95 bppcscmatch, bppcscattach, NULL, NULL); 96 97 /* 98 * if we are a Phase5 BlizzardPPC 603e+ 99 */ 100 int 101 bppcscmatch(device_t parent, cfdata_t cf, void *aux) 102 { 103 struct p5bus_attach_args *p5baa; 104 105 p5baa = aux; 106 107 if (strcmp(p5baa->p5baa_name, "bppcsc") == 0) 108 return 1; 109 110 return 0 ; 111 } 112 113 void 114 bppcscattach(device_t parent, device_t self, void *aux) 115 { 116 struct siop_softc *sc; 117 struct scsipi_adapter *adapt; 118 struct scsipi_channel *chan; 119 siop_regmap_p rp; 120 121 sc = device_private(self); 122 sc->sc_dev = self; 123 adapt = &sc->sc_adapter; 124 chan = &sc->sc_channel; 125 126 aprint_naive(": SCSI controller\n"); 127 aprint_normal(": BlizzardPPC 603e+ SCSI adapter\n"); 128 129 sc->sc_siopp = rp = ztwomap(BPPC_SCSI_OFF); 130 #ifdef DEBUG 131 siop_dump(sc); 132 #endif 133 /* 134 * CTEST7 = 00 135 */ 136 sc->sc_clock_freq = 50; /* Clock = 50 MHz */ 137 sc->sc_ctest7 = 0x00; 138 sc->sc_dcntl = 0x20; /* XXX - taken from cbiiisc */ 139 140 /* 141 * Fill in the scsipi_adapter. 142 */ 143 memset(adapt, 0, sizeof(*adapt)); 144 adapt->adapt_dev = self; 145 adapt->adapt_nchannels = 1; 146 adapt->adapt_openings = 7; 147 adapt->adapt_max_periph = 1; 148 adapt->adapt_request = siop_scsipi_request; 149 adapt->adapt_minphys = siop_minphys; 150 151 /* 152 * Fill in the scsipi_channel. 153 */ 154 memset(chan, 0, sizeof(*chan)); 155 chan->chan_adapter = adapt; 156 chan->chan_bustype = &scsi_bustype; 157 chan->chan_channel = 0; 158 chan->chan_ntargets = 8; 159 chan->chan_nluns = 8; 160 chan->chan_id = 7; 161 162 siopinitialize(sc); 163 164 sc->sc_isr.isr_intr = bppcsc_dmaintr; 165 sc->sc_isr.isr_arg = sc; 166 sc->sc_isr.isr_ipl = 2; 167 add_isr (&sc->sc_isr); 168 169 /* 170 * attach all scsi units on us 171 */ 172 config_found(self, chan, scsiprint, CFARGS_NONE); 173 } 174 175 int 176 bppcsc_dmaintr(void *arg) 177 { 178 struct siop_softc *sc; 179 siop_regmap_p rp; 180 u_char istat; 181 182 sc = arg; 183 if (sc->sc_flags & SIOP_INTSOFF) 184 return 0; /* interrupts are not active */ 185 rp = sc->sc_siopp; 186 amiga_membarrier(); 187 istat = rp->siop_istat; 188 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) 189 return 0; 190 /* 191 * save interrupt status, DMA status, and SCSI status 0 192 * (may need to deal with stacked interrupts?) 193 */ 194 sc->sc_sstat0 = rp->siop_sstat0; 195 sc->sc_istat = istat; 196 sc->sc_dstat = rp->siop_dstat; 197 amiga_membarrier(); 198 siopintr(sc); 199 return 1; 200 } 201 202 #ifdef DEBUG 203 void 204 bppcsc_dump(void) 205 { 206 extern struct cfdriver bppcsc_cd; 207 struct siop_softc *sc; 208 int i; 209 210 for (i = 0; i < bppcsc_cd.cd_ndevs; ++i) { 211 sc = device_lookup_private(&bppcsc_cd, i); 212 if (sc != NULL) 213 siop_dump(sc); 214 } 215 } 216 #endif 217
Indexes created Mon Sep 22 10:09:38 GMT 2025