if_le_isa.c revision 1.20
1 /* $NetBSD: if_le_isa.c,v 1.20 1998/06/25 19:18:05 thorpej 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) 1995 Charles M. Hannum. All rights reserved. 42 * Copyright (c) 1992, 1993 43 * The Regents of the University of California. All rights reserved. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * Ralph Campbell and Rick Macklem. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 77 */ 78 79 #include "bpfilter.h" 80 81 #include <sys/param.h> 82 #include <sys/systm.h> 83 #include <sys/mbuf.h> 84 #include <sys/syslog.h> 85 #include <sys/socket.h> 86 #include <sys/device.h> 87 88 #include <net/if.h> 89 #include <net/if_ether.h> 90 #include <net/if_media.h> 91 92 #ifdef INET 93 #include <netinet/in.h> 94 #include <netinet/if_inarp.h> 95 #endif 96 97 #include <vm/vm.h> 98 99 #include <machine/cpu.h> 100 #include <machine/intr.h> 101 #include <machine/bus.h> 102 103 #include <dev/isa/isareg.h> 104 #include <dev/isa/isavar.h> 105 #include <dev/isa/isadmavar.h> 106 107 #include <dev/ic/am7990reg.h> 108 #include <dev/ic/am7990var.h> 109 110 #include <dev/isa/if_levar.h> 111 112 int ne2100_isa_probe __P((struct device *, struct cfdata *, void *)); 113 int bicc_isa_probe __P((struct device *, struct cfdata *, void *)); 114 void le_dummyattach __P((struct device *, struct device *, void *)); 115 int le_dummyprobe __P((struct device *, struct cfdata *, void *)); 116 void le_ne2100_attach __P((struct device *, struct device *, void *)); 117 void le_bicc_attach __P((struct device *, struct device *, void *)); 118 119 struct cfattach nele_ca = { 120 sizeof(struct device), ne2100_isa_probe, le_dummyattach 121 }, le_nele_ca = { 122 sizeof(struct le_softc), le_dummyprobe, le_ne2100_attach 123 }, bicc_ca = { 124 sizeof(struct device), bicc_isa_probe, le_dummyattach 125 }, le_bicc_ca = { 126 sizeof(struct le_softc), le_dummyprobe, le_bicc_attach 127 }; 128 129 struct le_isa_params { 130 char *name; 131 int iosize, rap, rdp; 132 int macstart, macstride; 133 } ne2100_params = { 134 "NE2100", 135 24, NE2100_RAP, NE2100_RDP, 136 0, 1 137 }, bicc_params = { 138 "BICC Isolan", 139 16, BICC_RAP, BICC_RDP, 140 0, 2 141 }; 142 143 int lance_isa_probe __P((struct isa_attach_args *, struct le_isa_params *)); 144 void le_isa_attach __P((struct device *, struct le_softc *, 145 struct isa_attach_args *, struct le_isa_params *)); 146 147 int le_isa_intredge __P((void *)); 148 149 hide void le_isa_wrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); 150 hide u_int16_t le_isa_rdcsr __P((struct am7990_softc *, u_int16_t)); 151 152 #define LE_ISA_MEMSIZE 16384 153 154 hide void 155 le_isa_wrcsr(sc, port, val) 156 struct am7990_softc *sc; 157 u_int16_t port, val; 158 { 159 struct le_softc *lesc = (struct le_softc *)sc; 160 bus_space_tag_t iot = lesc->sc_iot; 161 bus_space_handle_t ioh = lesc->sc_ioh; 162 163 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 164 bus_space_write_2(iot, ioh, lesc->sc_rdp, val); 165 } 166 167 hide u_int16_t 168 le_isa_rdcsr(sc, port) 169 struct am7990_softc *sc; 170 u_int16_t port; 171 { 172 struct le_softc *lesc = (struct le_softc *)sc; 173 bus_space_tag_t iot = lesc->sc_iot; 174 bus_space_handle_t ioh = lesc->sc_ioh; 175 u_int16_t val; 176 177 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 178 val = bus_space_read_2(iot, ioh, lesc->sc_rdp); 179 return (val); 180 } 181 182 int 183 ne2100_isa_probe(parent, match, aux) 184 struct device *parent; 185 struct cfdata *match; 186 void *aux; 187 { 188 return (lance_isa_probe(aux, &ne2100_params)); 189 } 190 191 int 192 bicc_isa_probe(parent, match, aux) 193 struct device *parent; 194 struct cfdata *match; 195 void *aux; 196 { 197 return (lance_isa_probe(aux, &bicc_params)); 198 } 199 200 /* 201 * Determine which chip is present on the card. 202 */ 203 int 204 lance_isa_probe(ia, p) 205 struct isa_attach_args *ia; 206 struct le_isa_params *p; 207 { 208 bus_space_tag_t iot = ia->ia_iot; 209 bus_space_handle_t ioh; 210 int rap, rdp; 211 int rv = 0; 212 213 /* Disallow wildcarded i/o address. */ 214 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 215 return (0); 216 217 /* Map i/o space. */ 218 if (bus_space_map(iot, ia->ia_iobase, p->iosize, 0, &ioh)) 219 return (0); 220 221 rap = p->rap; 222 rdp = p->rdp; 223 224 /* Stop the LANCE chip and put it in a known state. */ 225 bus_space_write_2(iot, ioh, rap, LE_CSR0); 226 bus_space_write_2(iot, ioh, rdp, LE_C0_STOP); 227 delay(100); 228 229 bus_space_write_2(iot, ioh, rap, LE_CSR0); 230 if (bus_space_read_2(iot, ioh, rdp) != LE_C0_STOP) 231 goto bad; 232 233 bus_space_write_2(iot, ioh, rap, LE_CSR3); 234 bus_space_write_2(iot, ioh, rdp, 0); 235 236 ia->ia_iosize = p->iosize; 237 rv = 1; 238 239 bad: 240 bus_space_unmap(iot, ioh, p->iosize); 241 return (rv); 242 } 243 244 void 245 le_dummyattach(parent, self, aux) 246 struct device *parent, *self; 247 void *aux; 248 { 249 printf("\n"); 250 251 config_found(self, aux, 0); 252 } 253 254 int 255 le_dummyprobe(parent, match, aux) 256 struct device *parent; 257 struct cfdata *match; 258 void *aux; 259 { 260 return (1); 261 } 262 263 void 264 le_ne2100_attach(parent, self, aux) 265 struct device *parent, *self; 266 void *aux; 267 { 268 le_isa_attach(parent, (void *)self, aux, &ne2100_params); 269 } 270 271 void 272 le_bicc_attach(parent, self, aux) 273 struct device *parent, *self; 274 void *aux; 275 { 276 le_isa_attach(parent, (void *)self, aux, &bicc_params); 277 } 278 279 void 280 le_isa_attach(parent, lesc, ia, p) 281 struct device *parent; 282 struct le_softc *lesc; 283 struct isa_attach_args *ia; 284 struct le_isa_params *p; 285 { 286 struct am7990_softc *sc = &lesc->sc_am7990; 287 bus_space_tag_t iot = ia->ia_iot; 288 bus_space_handle_t ioh; 289 bus_dma_tag_t dmat = ia->ia_dmat; 290 bus_dma_segment_t seg; 291 int i, rseg, error; 292 293 printf(": %s Ethernet\n", p->name); 294 295 if (bus_space_map(iot, ia->ia_iobase, p->iosize, 0, &ioh)) 296 panic("%s: can't map io", sc->sc_dev.dv_xname); 297 298 /* 299 * Extract the physical MAC address from the ROM. 300 */ 301 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 302 sc->sc_enaddr[i] = 303 bus_space_read_1(iot, ioh, p->macstart + i * p->macstride); 304 305 lesc->sc_iot = iot; 306 lesc->sc_ioh = ioh; 307 lesc->sc_dmat = dmat; 308 lesc->sc_rap = p->rap; 309 lesc->sc_rdp = p->rdp; 310 311 /* 312 * Allocate a DMA area for the card. 313 */ 314 if (bus_dmamem_alloc(dmat, LE_ISA_MEMSIZE, NBPG, 0, &seg, 1, 315 &rseg, BUS_DMA_NOWAIT)) { 316 printf("%s: couldn't allocate memory for card\n", 317 sc->sc_dev.dv_xname); 318 return; 319 } 320 if (bus_dmamem_map(dmat, &seg, rseg, LE_ISA_MEMSIZE, 321 (caddr_t *)&sc->sc_mem, 322 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 323 printf("%s: couldn't map memory for card\n", 324 sc->sc_dev.dv_xname); 325 return; 326 } 327 328 /* 329 * Create and load the DMA map for the DMA area. 330 */ 331 if (bus_dmamap_create(dmat, LE_ISA_MEMSIZE, 1, 332 LE_ISA_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) { 333 printf("%s: couldn't create DMA map\n", 334 sc->sc_dev.dv_xname); 335 bus_dmamem_free(dmat, &seg, rseg); 336 return; 337 } 338 if (bus_dmamap_load(dmat, lesc->sc_dmam, 339 sc->sc_mem, LE_ISA_MEMSIZE, NULL, BUS_DMA_NOWAIT)) { 340 printf("%s: coundn't load DMA map\n", 341 sc->sc_dev.dv_xname); 342 bus_dmamem_free(dmat, &seg, rseg); 343 return; 344 } 345 346 sc->sc_conf3 = 0; 347 sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr; 348 sc->sc_memsize = LE_ISA_MEMSIZE; 349 350 sc->sc_copytodesc = am7990_copytobuf_contig; 351 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 352 sc->sc_copytobuf = am7990_copytobuf_contig; 353 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 354 sc->sc_zerobuf = am7990_zerobuf_contig; 355 356 sc->sc_rdcsr = le_isa_rdcsr; 357 sc->sc_wrcsr = le_isa_wrcsr; 358 sc->sc_hwinit = NULL; 359 360 if (ia->ia_drq != DRQUNK) { 361 if ((error = isa_dmacascade(ia->ia_ic, ia->ia_drq)) != 0) { 362 printf("%s: unable to cascade DRQ, error = %d\n", 363 sc->sc_dev.dv_xname, error); 364 return; 365 } 366 } 367 368 lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 369 IPL_NET, le_isa_intredge, sc); 370 371 printf("%s", sc->sc_dev.dv_xname); 372 am7990_config(sc); 373 } 374 375 /* 376 * Controller interrupt. 377 */ 378 int 379 le_isa_intredge(arg) 380 void *arg; 381 { 382 383 if (am7990_intr(arg) == 0) 384 return (0); 385 for (;;) 386 if (am7990_intr(arg) == 0) 387 return (1); 388 } 389
Indexes created Tue Sep 30 20:09:53 GMT 2025