if_le.c revision 1.3
1 /* $NetBSD: if_le.c,v 1.3 1998/07/30 22:44:51 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /*- 41 * Copyright (c) 1996 42 * The President and Fellows of Harvard College. All rights reserved. 43 * Copyright (c) 1995 Charles M. Hannum. All rights reserved. 44 * Copyright (c) 1992, 1993 45 * The Regents of the University of California. All rights reserved. 46 * 47 * This code is derived from software contributed to Berkeley by 48 * Ralph Campbell and Rick Macklem. 49 * 50 * Redistribution and use in source and binary forms, with or without 51 * modification, are permitted provided that the following conditions 52 * are met: 53 * 1. Redistributions of source code must retain the above copyright 54 * notice, this list of conditions and the following disclaimer. 55 * 2. Redistributions in binary form must reproduce the above copyright 56 * notice, this list of conditions and the following disclaimer in the 57 * documentation and/or other materials provided with the distribution. 58 * 3. All advertising materials mentioning features or use of this software 59 * must display the following acknowledgement: 60 * This product includes software developed by Aaron Brown and 61 * Harvard University. 62 * This product includes software developed by the University of 63 * California, Berkeley and its contributors. 64 * 4. Neither the name of the University nor the names of its contributors 65 * may be used to endorse or promote products derived from this software 66 * without specific prior written permission. 67 * 68 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 69 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 70 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 71 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 72 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 73 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 74 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 75 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 76 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 77 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 78 * SUCH DAMAGE. 79 * 80 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 81 */ 82 83 #include "opt_inet.h" 84 #include "bpfilter.h" 85 86 #include <sys/param.h> 87 #include <sys/systm.h> 88 #include <sys/mbuf.h> 89 #include <sys/syslog.h> 90 #include <sys/socket.h> 91 #include <sys/device.h> 92 #include <sys/malloc.h> 93 94 #include <net/if.h> 95 #include <net/if_ether.h> 96 #include <net/if_media.h> 97 98 #ifdef INET 99 #include <netinet/in.h> 100 #include <netinet/if_inarp.h> 101 #endif 102 103 #include <machine/autoconf.h> 104 #include <machine/cpu.h> 105 106 #include <dev/sbus/sbusvar.h> 107 #include <dev/sbus/lebuffervar.h> /*XXX*/ 108 109 #include <dev/ic/lancereg.h> 110 #include <dev/ic/lancevar.h> 111 #include <dev/ic/am7990reg.h> 112 #include <dev/ic/am7990var.h> 113 114 /* 115 * LANCE registers. 116 */ 117 struct lereg1 { 118 volatile u_int16_t ler1_rdp; /* data port */ 119 volatile u_int16_t ler1_rap; /* register select port */ 120 }; 121 122 struct le_softc { 123 struct am7990_softc sc_am7990; /* glue to MI code */ 124 struct sbusdev sc_sd; /* sbus device */ 125 bus_space_tag_t sc_bustag; 126 bus_dma_tag_t sc_dmatag; 127 struct lereg1 *sc_r1; /* LANCE registers */ 128 }; 129 130 #define MEMSIZE 0x4000 /* LANCE memory size */ 131 132 int lematch_sbus __P((struct device *, struct cfdata *, void *)); 133 void leattach_sbus __P((struct device *, struct device *, void *)); 134 135 /* 136 * Media types supported. 137 */ 138 static int lemedia[] = { 139 IFM_ETHER|IFM_10_5, 140 }; 141 #define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0])) 142 143 144 struct cfattach le_sbus_ca = { 145 sizeof(struct le_softc), lematch_sbus, leattach_sbus 146 }; 147 148 extern struct cfdriver le_cd; 149 150 #if defined(_KERNEL) && !defined(_LKM) 151 #include "opt_ddb.h" 152 #endif 153 154 #ifdef DDB 155 #define integrate 156 #define hide 157 #else 158 #define integrate static __inline 159 #define hide static 160 #endif 161 162 static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t)); 163 static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t)); 164 165 static void 166 lewrcsr(sc, port, val) 167 struct lance_softc *sc; 168 u_int16_t port, val; 169 { 170 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 171 172 ler1->ler1_rap = port; 173 ler1->ler1_rdp = val; 174 175 #if defined(SUN4M) 176 /* 177 * We need to flush the Sbus->Mbus write buffers. This can most 178 * easily be accomplished by reading back the register that we 179 * just wrote (thanks to Chris Torek for this solution). 180 */ 181 if (CPU_ISSUN4M) { 182 volatile u_int16_t discard; 183 discard = ler1->ler1_rdp; 184 } 185 #endif 186 } 187 188 static u_int16_t 189 lerdcsr(sc, port) 190 struct lance_softc *sc; 191 u_int16_t port; 192 { 193 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 194 u_int16_t val; 195 196 ler1->ler1_rap = port; 197 val = ler1->ler1_rdp; 198 return (val); 199 } 200 201 202 int 203 lematch_sbus(parent, cf, aux) 204 struct device *parent; 205 struct cfdata *cf; 206 void *aux; 207 { 208 struct sbus_attach_args *sa = aux; 209 210 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 211 } 212 213 #define SAME_LANCE(bp, sa) \ 214 ((bp->val[0] == sa->sa_slot && bp->val[1] == sa->sa_offset) || \ 215 (bp->val[0] == -1 && bp->val[1] == sc->sc_dev.dv_unit)) 216 217 void 218 leattach_sbus(parent, self, aux) 219 struct device *parent, *self; 220 void *aux; 221 { 222 struct sbus_attach_args *sa = aux; 223 struct le_softc *lesc = (struct le_softc *)self; 224 struct lance_softc *sc = &lesc->sc_am7990.lsc; 225 struct sbusdev *sd; 226 bus_space_handle_t bh; 227 /* XXX the following declarations should be elsewhere */ 228 extern void myetheraddr __P((u_char *)); 229 230 231 lesc->sc_bustag = sa->sa_bustag; 232 lesc->sc_dmatag = sa->sa_dmatag; 233 234 if (sbus_bus_map(sa->sa_bustag, 235 sa->sa_slot, 236 sa->sa_offset, 237 sizeof(struct lereg1), 238 BUS_SPACE_MAP_LINEAR, 239 0, &bh) != 0) { 240 printf("%s @ sbus: cannot map registers\n", self->dv_xname); 241 return; 242 } 243 lesc->sc_r1 = (struct lereg1 *)bh; 244 245 /* 246 * Look for an "unallocated" lebuffer and pair it with 247 * this `le' device on the assumption that we're on 248 * a pre-historic ROM that doesn't establish le<=>lebuffer 249 * parent-child relationships. 250 */ 251 for (sd = ((struct sbus_softc *)parent)->sc_sbdev; sd != NULL; 252 sd = sd->sd_bchain) { 253 254 struct lebuf_softc *lebuf = (struct lebuf_softc *)sd->sd_dev; 255 256 if (strncmp("lebuffer", sd->sd_dev->dv_xname, 8) != 0) 257 continue; 258 259 if (lebuf->attached != 0) 260 continue; 261 262 sc->sc_mem = lebuf->sc_buffer; 263 sc->sc_memsize = lebuf->sc_bufsiz; 264 sc->sc_addr = 0; /* Lance view is offset by buffer location */ 265 lebuf->attached = 1; 266 267 /* That old black magic... */ 268 sc->sc_conf3 = getpropint(sa->sa_node, 269 "busmaster-regval", 270 LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON); 271 break; 272 } 273 274 lesc->sc_sd.sd_reset = (void *)lance_reset; 275 sbus_establish(&lesc->sc_sd, &sc->sc_dev); 276 277 if (sa->sa_bp != NULL && strcmp(sa->sa_bp->name, le_cd.cd_name) == 0 && 278 SAME_LANCE(sa->sa_bp, sa)) 279 sa->sa_bp->dev = &sc->sc_dev; 280 281 if (sc->sc_mem == 0) { 282 bus_dma_segment_t seg; 283 int rseg, error; 284 285 error = bus_dmamem_alloc(lesc->sc_dmatag, MEMSIZE, NBPG, 0, 286 &seg, 1, &rseg, 287 BUS_DMA_NOWAIT | BUS_DMA_24BIT); 288 if (error) { 289 printf("if_le: DMA buffer alloc error %d\n", error); 290 return; 291 } 292 error = bus_dmamem_map(lesc->sc_dmatag, &seg, rseg, MEMSIZE, 293 (caddr_t *)&sc->sc_mem, 294 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 295 if (error) { 296 printf("if_le: DMA buffer map error %d\n", error); 297 return; 298 } 299 300 sc->sc_addr = seg.ds_addr & 0xffffff; 301 #if defined (SUN4M) 302 if ((sc->sc_addr & 0xffffff) >= 303 (sc->sc_addr & 0xffffff) + MEMSIZE) 304 panic("if_le: Lance buffer crosses 16MB boundary"); 305 #endif 306 sc->sc_memsize = MEMSIZE; 307 sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON; 308 } 309 310 myetheraddr(sc->sc_enaddr); 311 312 sc->sc_supmedia = lemedia; 313 sc->sc_nsupmedia = NLEMEDIA; 314 sc->sc_defaultmedia = lemedia[0]; 315 316 sc->sc_copytodesc = lance_copytobuf_contig; 317 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 318 sc->sc_copytobuf = lance_copytobuf_contig; 319 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 320 sc->sc_zerobuf = lance_zerobuf_contig; 321 322 sc->sc_rdcsr = lerdcsr; 323 sc->sc_wrcsr = lewrcsr; 324 325 am7990_config(&lesc->sc_am7990); 326 327 (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 0, 328 am7990_intr, sc); 329 } 330
Indexes created Wed Sep 24 05:09:52 GMT 2025