dma_sbus.c revision 1.3
1 /* $NetBSD: dma_sbus.c,v 1.3 1998/09/05 17:28:57 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1994 Peter Galbavy. All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by Peter Galbavy. 53 * 4. The name of the author may not be used to endorse or promote products 54 * derived from this software without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 57 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 58 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 59 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 60 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 61 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 62 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 63 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 64 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 65 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #include <sys/types.h> 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/kernel.h> 72 #include <sys/errno.h> 73 #include <sys/device.h> 74 #include <sys/malloc.h> 75 76 #include <machine/bus.h> 77 #include <machine/autoconf.h> 78 #include <machine/cpu.h> 79 80 #include <dev/sbus/sbusvar.h> 81 82 #include <dev/ic/lsi64854reg.h> 83 #include <dev/ic/lsi64854var.h> 84 85 #include <dev/scsipi/scsi_all.h> 86 #include <dev/scsipi/scsipi_all.h> 87 #include <dev/scsipi/scsiconf.h> 88 89 #include <dev/ic/ncr53c9xreg.h> 90 #include <dev/ic/ncr53c9xvar.h> 91 92 struct dma_softc { 93 struct lsi64854_softc sc_lsi64854; /* base device */ 94 struct sbusdev sc_sd; /* sbus device */ 95 }; 96 97 int dmamatch_sbus __P((struct device *, struct cfdata *, void *)); 98 void dmaattach_sbus __P((struct device *, struct device *, void *)); 99 100 int dmaprint_sbus __P((void *, const char *)); 101 102 void *dmabus_intr_establish __P(( 103 bus_space_tag_t, 104 int, /*level*/ 105 int, /*flags*/ 106 int (*) __P((void *)), /*handler*/ 107 void *)); /*handler arg*/ 108 109 static bus_space_tag_t dma_alloc_bustag __P((struct dma_softc *sc)); 110 111 struct cfattach dma_sbus_ca = { 112 sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus 113 }; 114 115 struct cfattach ledma_ca = { 116 sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus 117 }; 118 119 int 120 dmaprint_sbus(aux, busname) 121 void *aux; 122 const char *busname; 123 { 124 struct sbus_attach_args *sa = aux; 125 bus_space_tag_t t = sa->sa_bustag; 126 struct dma_softc *sc = t->cookie; 127 128 sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */ 129 sbus_print(aux, busname); /* XXX */ 130 sa->sa_bustag = t; /* XXX */ 131 return (UNCONF); 132 } 133 134 int 135 dmamatch_sbus(parent, cf, aux) 136 struct device *parent; 137 struct cfdata *cf; 138 void *aux; 139 { 140 struct sbus_attach_args *sa = aux; 141 142 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 || 143 strcmp("espdma", sa->sa_name) == 0); 144 } 145 146 void 147 dmaattach_sbus(parent, self, aux) 148 struct device *parent, *self; 149 void *aux; 150 { 151 struct sbus_attach_args *sa = aux; 152 struct dma_softc *dsc = (void *)self; 153 struct lsi64854_softc *sc = &dsc->sc_lsi64854; 154 bus_space_handle_t bh; 155 /*XXX*/ struct bootpath *bp; 156 bus_space_tag_t sbt; 157 int sbusburst, burst; 158 int node; 159 160 node = sa->sa_node; 161 162 sc->sc_bustag = sa->sa_bustag; 163 sc->sc_dmatag = sa->sa_dmatag; 164 165 /* Map registers */ 166 if (sa->sa_npromvaddrs != 0) 167 sc->sc_regs = (bus_space_handle_t)sa->sa_promvaddrs[0]; 168 else { 169 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 170 sa->sa_offset, 171 sa->sa_size, 172 0, 0, &bh) != 0) { 173 printf("%s: cannot map registers\n", self->dv_xname); 174 return; 175 } 176 sc->sc_regs = bh; 177 } 178 179 /* 180 * Get transfer burst size from PROM and plug it into the 181 * controller registers. This is needed on the Sun4m; do 182 * others need it too? 183 */ 184 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 185 if (sbusburst == 0) 186 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 187 188 burst = getpropint(node,"burst-sizes", -1); 189 if (burst == -1) 190 /* take SBus burst sizes */ 191 burst = sbusburst; 192 193 /* Clamp at parent's burst sizes */ 194 burst &= sbusburst; 195 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 196 (burst & SBUS_BURST_16) ? 16 : 0; 197 198 if (sc->sc_dev.dv_cfdata->cf_attach == &ledma_ca) { 199 char *cabletype; 200 u_int32_t csr; 201 /* 202 * Check to see which cable type is currently active and 203 * set the appropriate bit in the ledma csr so that it 204 * gets used. If we didn't netboot, the PROM won't have 205 * the "cable-selection" property; default to TP and then 206 * the user can change it via a "media" option to ifconfig. 207 */ 208 cabletype = getpropstring(node, "cable-selection"); 209 csr = L64854_GCSR(sc); 210 if (strcmp(cabletype, "tpe") == 0) { 211 csr |= E_TP_AUI; 212 } else if (strcmp(cabletype, "aui") == 0) { 213 csr &= ~E_TP_AUI; 214 } else { 215 /* assume TP if nothing there */ 216 csr |= E_TP_AUI; 217 } 218 L64854_SCSR(sc, csr); 219 delay(20000); /* manual says we need a 20ms delay */ 220 sc->sc_channel = L64854_CHANNEL_ENET; 221 } else { 222 sc->sc_channel = L64854_CHANNEL_SCSI; 223 } 224 225 226 /* Propagate bootpath */ 227 bp = NULL; 228 if (sa->sa_bp != NULL) { 229 char *bpname = sa->sa_bp->name; 230 if (strcmp(bpname, "espdma") == 0) 231 /* We call everything "dma" */ 232 bpname = "dma"; 233 234 if (strcmp(bpname, self->dv_cfdata->cf_driver->cd_name) == 0) 235 bp = sa->sa_bp + 1; 236 } 237 238 sbus_establish(&dsc->sc_sd, &sc->sc_dev); 239 sbt = dma_alloc_bustag(dsc); 240 lsi64854_attach(sc); 241 242 /* Attach children */ 243 for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) { 244 struct sbus_attach_args sa; 245 sbus_setup_attach_args((struct sbus_softc *)parent, 246 sbt, sc->sc_dmatag, node, bp, &sa); 247 (void) config_found(&sc->sc_dev, (void *)&sa, dmaprint_sbus); 248 sbus_destroy_attach_args(&sa); 249 } 250 } 251 252 void * 253 dmabus_intr_establish(t, level, flags, handler, arg) 254 bus_space_tag_t t; 255 int level; 256 int flags; 257 int (*handler) __P((void *)); 258 void *arg; 259 { 260 struct lsi64854_softc *sc = t->cookie; 261 262 /* XXX - for now only le; do esp later */ 263 if (sc->sc_channel == L64854_CHANNEL_ENET) { 264 sc->sc_intrchain = handler; 265 sc->sc_intrchainarg = arg; 266 handler = lsi64854_enet_intr; 267 arg = sc; 268 } 269 return (bus_intr_establish(sc->sc_bustag, level, flags, handler, arg)); 270 } 271 272 bus_space_tag_t 273 dma_alloc_bustag(sc) 274 struct dma_softc *sc; 275 { 276 bus_space_tag_t sbt; 277 278 sbt = (bus_space_tag_t) 279 malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT); 280 if (sbt == NULL) 281 return (NULL); 282 283 bzero(sbt, sizeof *sbt); 284 sbt->cookie = sc; 285 sbt->parent = sc->sc_lsi64854.sc_bustag; 286 sbt->sparc_intr_establish = dmabus_intr_establish; 287 return (sbt); 288 } 289
Indexes created Sat Sep 27 14:09:57 GMT 2025