if_le.c revision 1.4
1 /* $NetBSD: if_le.c,v 1.4 1998/08/15 10:51:19 mycroft Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace 9 * Simulation Facility, 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) 1992, 1993 44 * The Regents of the University of California. All rights reserved. 45 * 46 * This code is derived from software contributed to Berkeley by 47 * Ralph Campbell and Rick Macklem. 48 * 49 * Redistribution and use in source and binary forms, with or without 50 * modification, are permitted provided that the following conditions 51 * are met: 52 * 1. Redistributions of source code must retain the above copyright 53 * notice, this list of conditions and the following disclaimer. 54 * 2. Redistributions in binary form must reproduce the above copyright 55 * notice, this list of conditions and the following disclaimer in the 56 * documentation and/or other materials provided with the distribution. 57 * 3. All advertising materials mentioning features or use of this software 58 * must display the following acknowledgement: 59 * This product includes software developed by Aaron Brown and 60 * Harvard University. 61 * This product includes software developed by the University of 62 * California, Berkeley and its contributors. 63 * 4. Neither the name of the University nor the names of its contributors 64 * may be used to endorse or promote products derived from this software 65 * without specific prior written permission. 66 * 67 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 68 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 69 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 70 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 71 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 72 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 73 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 74 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 75 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 76 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 77 * SUCH DAMAGE. 78 * 79 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 80 */ 81 82 #include "opt_inet.h" 83 #include "bpfilter.h" 84 85 #include <sys/param.h> 86 #include <sys/systm.h> 87 #include <sys/mbuf.h> 88 #include <sys/syslog.h> 89 #include <sys/socket.h> 90 #include <sys/device.h> 91 #include <sys/malloc.h> 92 93 #include <net/if.h> 94 #include <net/if_ether.h> 95 #include <net/if_media.h> 96 97 #ifdef INET 98 #include <netinet/in.h> 99 #include <netinet/if_inarp.h> 100 #endif 101 102 #include <machine/autoconf.h> 103 #include <machine/cpu.h> 104 105 #include <dev/sbus/sbusvar.h> 106 #include <dev/sbus/lebuffervar.h> /*XXX*/ 107 108 #include <dev/ic/lancereg.h> 109 #include <dev/ic/lancevar.h> 110 #include <dev/ic/am7990reg.h> 111 #include <dev/ic/am7990var.h> 112 113 /* 114 * LANCE registers. 115 */ 116 struct lereg1 { 117 volatile u_int16_t ler1_rdp; /* data port */ 118 volatile u_int16_t ler1_rap; /* register select port */ 119 }; 120 121 struct le_softc { 122 struct am7990_softc sc_am7990; /* glue to MI code */ 123 struct sbusdev sc_sd; /* sbus device */ 124 bus_space_tag_t sc_bustag; 125 bus_dma_tag_t sc_dmatag; 126 struct lereg1 *sc_r1; /* LANCE registers */ 127 }; 128 129 #define MEMSIZE 0x4000 /* LANCE memory size */ 130 131 int lematch_sbus __P((struct device *, struct cfdata *, void *)); 132 void leattach_sbus __P((struct device *, struct device *, void *)); 133 134 /* 135 * Media types supported. 136 */ 137 static int lemedia[] = { 138 IFM_ETHER|IFM_10_5, 139 }; 140 #define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0])) 141 142 143 struct cfattach le_sbus_ca = { 144 sizeof(struct le_softc), lematch_sbus, leattach_sbus 145 }; 146 147 extern struct cfdriver le_cd; 148 149 #if defined(_KERNEL) && !defined(_LKM) 150 #include "opt_ddb.h" 151 #endif 152 153 #ifdef DDB 154 #define integrate 155 #define hide 156 #else 157 #define integrate static __inline 158 #define hide static 159 #endif 160 161 static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t)); 162 static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t)); 163 164 static void 165 lewrcsr(sc, port, val) 166 struct lance_softc *sc; 167 u_int16_t port, val; 168 { 169 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 170 171 ler1->ler1_rap = port; 172 ler1->ler1_rdp = val; 173 174 #if defined(SUN4M) 175 /* 176 * We need to flush the Sbus->Mbus write buffers. This can most 177 * easily be accomplished by reading back the register that we 178 * just wrote (thanks to Chris Torek for this solution). 179 */ 180 if (CPU_ISSUN4M) { 181 volatile u_int16_t discard; 182 discard = ler1->ler1_rdp; 183 } 184 #endif 185 } 186 187 static u_int16_t 188 lerdcsr(sc, port) 189 struct lance_softc *sc; 190 u_int16_t port; 191 { 192 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 193 u_int16_t val; 194 195 ler1->ler1_rap = port; 196 val = ler1->ler1_rdp; 197 return (val); 198 } 199 200 201 int 202 lematch_sbus(parent, cf, aux) 203 struct device *parent; 204 struct cfdata *cf; 205 void *aux; 206 { 207 struct sbus_attach_args *sa = aux; 208 209 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 210 } 211 212 #define SAME_LANCE(bp, sa) \ 213 ((bp->val[0] == sa->sa_slot && bp->val[1] == sa->sa_offset) || \ 214 (bp->val[0] == -1 && bp->val[1] == sc->sc_dev.dv_unit)) 215 216 void 217 leattach_sbus(parent, self, aux) 218 struct device *parent, *self; 219 void *aux; 220 { 221 struct sbus_attach_args *sa = aux; 222 struct le_softc *lesc = (struct le_softc *)self; 223 struct lance_softc *sc = &lesc->sc_am7990.lsc; 224 struct sbusdev *sd; 225 bus_space_handle_t bh; 226 /* XXX the following declarations should be elsewhere */ 227 extern void myetheraddr __P((u_char *)); 228 229 230 lesc->sc_bustag = sa->sa_bustag; 231 lesc->sc_dmatag = sa->sa_dmatag; 232 233 if (sbus_bus_map(sa->sa_bustag, 234 sa->sa_slot, 235 sa->sa_offset, 236 sizeof(struct lereg1), 237 BUS_SPACE_MAP_LINEAR, 238 0, &bh) != 0) { 239 printf("%s @ sbus: cannot map registers\n", self->dv_xname); 240 return; 241 } 242 lesc->sc_r1 = (struct lereg1 *)bh; 243 244 /* 245 * Look for an "unallocated" lebuffer and pair it with 246 * this `le' device on the assumption that we're on 247 * a pre-historic ROM that doesn't establish le<=>lebuffer 248 * parent-child relationships. 249 */ 250 for (sd = ((struct sbus_softc *)parent)->sc_sbdev; sd != NULL; 251 sd = sd->sd_bchain) { 252 253 struct lebuf_softc *lebuf = (struct lebuf_softc *)sd->sd_dev; 254 255 if (strncmp("lebuffer", sd->sd_dev->dv_xname, 8) != 0) 256 continue; 257 258 if (lebuf->attached != 0) 259 continue; 260 261 sc->sc_mem = lebuf->sc_buffer; 262 sc->sc_memsize = lebuf->sc_bufsiz; 263 sc->sc_addr = 0; /* Lance view is offset by buffer location */ 264 lebuf->attached = 1; 265 266 /* That old black magic... */ 267 sc->sc_conf3 = getpropint(sa->sa_node, 268 "busmaster-regval", 269 LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON); 270 break; 271 } 272 273 lesc->sc_sd.sd_reset = (void *)lance_reset; 274 sbus_establish(&lesc->sc_sd, &sc->sc_dev); 275 276 if (sa->sa_bp != NULL && strcmp(sa->sa_bp->name, le_cd.cd_name) == 0 && 277 SAME_LANCE(sa->sa_bp, sa)) 278 sa->sa_bp->dev = &sc->sc_dev; 279 280 if (sc->sc_mem == 0) { 281 bus_dma_segment_t seg; 282 int rseg, error; 283 284 error = bus_dmamem_alloc(lesc->sc_dmatag, MEMSIZE, NBPG, 0, 285 &seg, 1, &rseg, 286 BUS_DMA_NOWAIT | BUS_DMA_24BIT); 287 if (error) { 288 printf("if_le: DMA buffer alloc error %d\n", error); 289 return; 290 } 291 error = bus_dmamem_map(lesc->sc_dmatag, &seg, rseg, MEMSIZE, 292 (caddr_t *)&sc->sc_mem, 293 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 294 if (error) { 295 printf("if_le: DMA buffer map error %d\n", error); 296 return; 297 } 298 299 sc->sc_addr = seg.ds_addr & 0xffffff; 300 #if defined (SUN4M) 301 if ((sc->sc_addr & 0xffffff) >= 302 (sc->sc_addr & 0xffffff) + MEMSIZE) 303 panic("if_le: Lance buffer crosses 16MB boundary"); 304 #endif 305 sc->sc_memsize = MEMSIZE; 306 sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON; 307 } 308 309 myetheraddr(sc->sc_enaddr); 310 311 sc->sc_supmedia = lemedia; 312 sc->sc_nsupmedia = NLEMEDIA; 313 sc->sc_defaultmedia = lemedia[0]; 314 315 sc->sc_copytodesc = lance_copytobuf_contig; 316 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 317 sc->sc_copytobuf = lance_copytobuf_contig; 318 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 319 sc->sc_zerobuf = lance_zerobuf_contig; 320 321 sc->sc_rdcsr = lerdcsr; 322 sc->sc_wrcsr = lewrcsr; 323 324 am7990_config(&lesc->sc_am7990); 325 326 (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 0, 327 am7990_intr, sc); 328 } 329
Indexes created Tue Sep 23 14:10:03 GMT 2025