1/* $OpenBSD: dma_sbus.c,v 1.19 2022/10/16 01:22:40 jsg Exp $ */ 2/* $NetBSD: dma_sbus.c,v 1.5 2000/07/09 20:57:42 pk Exp $ */ 3 4/*- 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Paul Kranenburg. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/* 34 * Copyright (c) 1994 Peter Galbavy. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57#include <sys/param.h> 58#include <sys/systm.h> 59#include <sys/kernel.h> 60#include <sys/errno.h> 61#include <sys/device.h> 62#include <sys/malloc.h> 63 64#include <machine/bus.h> 65#include <machine/intr.h> 66#include <machine/autoconf.h> 67 68#include <dev/sbus/sbusvar.h> 69 70#include <dev/ic/lsi64854reg.h> 71#include <dev/ic/lsi64854var.h> 72 73#include <scsi/scsi_all.h> 74#include <scsi/scsiconf.h> 75 76#include <dev/ic/ncr53c9xreg.h> 77#include <dev/ic/ncr53c9xvar.h> 78 79struct dma_softc { 80 struct lsi64854_softc sc_lsi64854; /* base device */ 81}; 82 83int dmamatch_sbus(struct device *, void *, void *); 84void dmaattach_sbus(struct device *, struct device *, void *); 85 86int dmaprint_sbus(void *, const char *); 87 88void *dmabus_intr_establish( 89 bus_space_tag_t, 90 bus_space_tag_t, 91 int, /*bus interrupt priority*/ 92 int, /*`device class' level*/ 93 int, /*flags*/ 94 int (*)(void *), /*handler*/ 95 void *, /*handler arg*/ 96 const char *); /*what*/ 97 98static bus_space_tag_t dma_alloc_bustag(struct dma_softc *sc); 99 100const struct cfattach dma_sbus_ca = { 101 sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus 102}; 103 104const struct cfattach ledma_ca = { 105 sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus 106}; 107 108struct cfdriver ledma_cd = { 109 NULL, "ledma", DV_DULL 110}; 111 112struct cfdriver dma_cd = { 113 NULL, "dma", DV_DULL 114}; 115 116int 117dmaprint_sbus(void *aux, const char *busname) 118{ 119 struct sbus_attach_args *sa = aux; 120 bus_space_tag_t t = sa->sa_bustag; 121 struct dma_softc *sc = t->cookie; 122 123 sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */ 124 sbus_print(aux, busname); /* XXX */ 125 sa->sa_bustag = t; /* XXX */ 126 return (UNCONF); 127} 128 129int 130dmamatch_sbus(struct device *parent, void *vcf, void *aux) 131{ 132 struct cfdata *cf = vcf; 133 struct sbus_attach_args *sa = aux; 134 135 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 || 136 strcmp("espdma", sa->sa_name) == 0); 137} 138 139void 140dmaattach_sbus(struct device *parent, struct device *self, void *aux) 141{ 142 struct sbus_attach_args *sa = aux; 143 struct dma_softc *dsc = (void *)self; 144 struct lsi64854_softc *sc = &dsc->sc_lsi64854; 145 bus_space_handle_t bh; 146 bus_space_tag_t sbt; 147 int sbusburst, burst; 148 int node; 149 150 node = sa->sa_node; 151 152 sc->sc_bustag = sa->sa_bustag; 153 sc->sc_dmatag = sa->sa_dmatag; 154 155 /* Map registers */ 156 if (sa->sa_npromvaddrs != 0) { 157 if (sbus_bus_map(sa->sa_bustag, 0, 158 sa->sa_promvaddrs[0], 159 sa->sa_size, /* ???? */ 160 BUS_SPACE_MAP_PROMADDRESS, 161 0, &bh) != 0) { 162 printf("%s: cannot map registers\n", self->dv_xname); 163 return; 164 } 165 } else if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 166 sa->sa_offset, 167 sa->sa_size, 168 0, 0, &bh) != 0) { 169 printf("%s: cannot map registers\n", self->dv_xname); 170 return; 171 } 172 sc->sc_regs = bh; 173 174 /* 175 * Get transfer burst size from PROM and plug it into the 176 * controller registers. This is needed on the Sun4m; do 177 * others need it too? 178 */ 179 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 180 if (sbusburst == 0) 181 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 182 183 burst = getpropint(node,"burst-sizes", -1); 184 if (burst == -1) 185 /* take SBus burst sizes */ 186 burst = sbusburst; 187 188 /* Clamp at parent's burst sizes */ 189 burst &= sbusburst; 190 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 191 (burst & SBUS_BURST_16) ? 16 : 0; 192 193 if (sc->sc_dev.dv_cfdata->cf_attach == &ledma_ca) { 194 char *cabletype; 195 u_int32_t csr; 196 /* 197 * Check to see which cable type is currently active and 198 * set the appropriate bit in the ledma csr so that it 199 * gets used. If we didn't netboot, the PROM won't have 200 * the "cable-selection" property; default to TP and then 201 * the user can change it via a "media" option to ifconfig. 202 */ 203 cabletype = getpropstring(node, "cable-selection"); 204 csr = L64854_GCSR(sc); 205 if (strcmp(cabletype, "tpe") == 0) { 206 csr |= E_TP_AUI; 207 } else if (strcmp(cabletype, "aui") == 0) { 208 csr &= ~E_TP_AUI; 209 } else { 210 /* assume TP if nothing there */ 211 csr |= E_TP_AUI; 212 } 213 L64854_SCSR(sc, csr); 214 delay(20000); /* manual says we need a 20ms delay */ 215 sc->sc_channel = L64854_CHANNEL_ENET; 216 } else { 217 sc->sc_channel = L64854_CHANNEL_SCSI; 218 } 219 220 sbt = dma_alloc_bustag(dsc); 221 if (lsi64854_attach(sc) != 0) 222 return; 223 224 /* Attach children */ 225 for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) { 226 struct sbus_attach_args sa; 227 sbus_setup_attach_args((struct sbus_softc *)parent, 228 sbt, sc->sc_dmatag, node, &sa); 229 (void) config_found(&sc->sc_dev, (void *)&sa, dmaprint_sbus); 230 sbus_destroy_attach_args(&sa); 231 } 232} 233 234void * 235dmabus_intr_establish( 236 bus_space_tag_t t, 237 bus_space_tag_t t0, 238 int pri, 239 int level, 240 int flags, 241 int (*handler)(void *), 242 void *arg, 243 const char *what) 244{ 245 struct lsi64854_softc *sc = t->cookie; 246 247 /* XXX - for now only le; do esp later */ 248 if (sc->sc_channel == L64854_CHANNEL_ENET) { 249 sc->sc_intrchain = handler; 250 sc->sc_intrchainarg = arg; 251 handler = lsi64854_enet_intr; 252 arg = sc; 253 } 254 255 for (t = t->parent; t; t = t->parent) { 256 if (t->sparc_intr_establish != NULL) 257 return ((*t->sparc_intr_establish) 258 (t, t0, pri, level, flags, handler, arg, what)); 259 260 } 261 262 panic("dmabus_intr_establish: no handler found"); 263 264 return (NULL); 265} 266 267bus_space_tag_t 268dma_alloc_bustag(struct dma_softc *sc) 269{ 270 struct sparc_bus_space_tag *sbt; 271 272 sbt = malloc(sizeof(*sbt), M_DEVBUF, M_NOWAIT | M_ZERO); 273 if (sbt == NULL) 274 return (NULL); 275 276 sbt->cookie = sc; 277 sbt->parent = sc->sc_lsi64854.sc_bustag; 278 sbt->asi = sbt->parent->asi; 279 sbt->sasi = sbt->parent->sasi; 280 sbt->sparc_intr_establish = dmabus_intr_establish; 281 return (sbt); 282} 283