if_ep_isa.c revision 1.26
1 /* $NetBSD: if_ep_isa.c,v 1.26 1999/04/28 01:20:01 jonathan Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 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) 1997 Jonathan Stone <jonathan (at) NetBSD.org> 42 * Copyright (c) 1994 Herb Peyerl <hpeyerl (at) beer.org> 43 * All rights reserved. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by Herb Peyerl. 56 * 4. The name of Herb Peyerl may not be used to endorse or promote products 57 * derived from this software without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 60 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 61 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 62 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 63 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 64 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 65 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 66 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 67 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 68 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 69 */ 70 71 #include "opt_inet.h" 72 #include "opt_ns.h" 73 #include "bpfilter.h" 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/mbuf.h> 78 #include <sys/socket.h> 79 #include <sys/ioctl.h> 80 #include <sys/errno.h> 81 #include <sys/syslog.h> 82 #include <sys/select.h> 83 #include <sys/device.h> 84 #include <sys/queue.h> 85 86 #include <net/if.h> 87 #include <net/if_dl.h> 88 #include <net/if_ether.h> 89 #include <net/if_media.h> 90 91 #ifdef INET 92 #include <netinet/in.h> 93 #include <netinet/in_systm.h> 94 #include <netinet/in_var.h> 95 #include <netinet/ip.h> 96 #include <netinet/if_inarp.h> 97 #endif 98 99 #ifdef NS 100 #include <netns/ns.h> 101 #include <netns/ns_if.h> 102 #endif 103 104 #if NBPFILTER > 0 105 #include <net/bpf.h> 106 #include <net/bpfdesc.h> 107 #endif 108 109 #include <machine/cpu.h> 110 #include <machine/bus.h> 111 #include <machine/intr.h> 112 113 #include <dev/mii/miivar.h> 114 115 #include <dev/ic/elink3var.h> 116 #include <dev/ic/elink3reg.h> 117 118 #include <dev/isa/isavar.h> 119 #include <dev/isa/elink.h> 120 121 int ep_isa_probe __P((struct device *, struct cfdata *, void *)); 122 void ep_isa_attach __P((struct device *, struct device *, void *)); 123 124 struct cfattach ep_isa_ca = { 125 sizeof(struct ep_softc), ep_isa_probe, ep_isa_attach 126 }; 127 128 static void epaddcard __P((int, int, int, int)); 129 130 /* 131 * This keeps track of which ISAs have been through an ep probe sequence. 132 * A simple static variable isn't enough, since it's conceivable that 133 * a system might have more than one ISA bus. 134 * 135 * The "er_bus" member is the unit number of the parent ISA bus, e.g. "0" 136 * for "isa0". 137 */ 138 struct ep_isa_done_probe { 139 LIST_ENTRY(ep_isa_done_probe) er_link; 140 int er_bus; 141 }; 142 static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes; 143 static int ep_isa_probes_initialized; 144 145 #define MAXEPCARDS 20 /* if you have more than 20, you lose */ 146 147 static struct epcard { 148 int bus; 149 int iobase; 150 int irq; 151 char available; 152 long model; 153 } epcards[MAXEPCARDS]; 154 static int nepcards; 155 156 static void 157 epaddcard(bus, iobase, irq, model) 158 int bus, iobase, irq, model; 159 { 160 161 if (nepcards >= MAXEPCARDS) 162 return; 163 epcards[nepcards].bus = bus; 164 epcards[nepcards].iobase = iobase; 165 epcards[nepcards].irq = (irq == 2) ? 9 : irq; 166 epcards[nepcards].model = model; 167 epcards[nepcards].available = 1; 168 nepcards++; 169 } 170 171 /* 172 * 3c509 cards on the ISA bus are probed in ethernet address order. 173 * The probe sequence requires careful orchestration, and we'd like 174 * like to allow the irq and base address to be wildcarded. So, we 175 * probe all the cards the first time epprobe() is called. On subsequent 176 * calls we look for matching cards. 177 */ 178 int 179 ep_isa_probe(parent, match, aux) 180 struct device *parent; 181 struct cfdata *match; 182 void *aux; 183 { 184 struct isa_attach_args *ia = aux; 185 bus_space_tag_t iot = ia->ia_iot; 186 bus_space_handle_t ioh; 187 int slot, iobase, irq, i; 188 u_int16_t vendor, model; 189 struct ep_isa_done_probe *er; 190 int bus = parent->dv_unit; 191 192 if (ep_isa_probes_initialized == 0) { 193 LIST_INIT(&ep_isa_all_probes); 194 ep_isa_probes_initialized = 1; 195 } 196 197 /* 198 * Probe this bus if we haven't done so already. 199 */ 200 for (er = ep_isa_all_probes.lh_first; er != NULL; 201 er = er->er_link.le_next) 202 if (er->er_bus == parent->dv_unit) 203 goto bus_probed; 204 205 /* 206 * Mark this bus so we don't probe it again. 207 */ 208 er = (struct ep_isa_done_probe *) 209 malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT); 210 if (er == NULL) 211 panic("ep_isa_probe: can't allocate state storage"); 212 213 er->er_bus = bus; 214 LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link); 215 216 /* 217 * Map the Etherlink ID port for the probe sequence. 218 */ 219 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 220 printf("ep_isa_probe: can't map Etherlink ID port\n"); 221 return 0; 222 } 223 224 for (slot = 0; slot < MAXEPCARDS; slot++) { 225 elink_reset(iot, ioh, parent->dv_unit); 226 elink_idseq(iot, ioh, ELINK_509_POLY); 227 228 /* Untag all the adapters so they will talk to us. */ 229 if (slot == 0) 230 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0); 231 232 vendor = htons(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); 233 if (vendor != MFG_ID) 234 continue; 235 236 model = htons(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); 237 /* 238 * XXX: Add a new product id to check for other cards 239 * (3c515?) and fix the check in ep_isa_attach. 240 */ 241 if ((model & 0xfff0) != PROD_ID_3C509) { 242 #ifndef trusted 243 printf( 244 "ep_isa_probe: ignoring model %04x\n", model); 245 #endif 246 continue; 247 } 248 249 iobase = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); 250 iobase = (iobase & 0x1f) * 0x10 + 0x200; 251 252 irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); 253 irq >>= 12; 254 255 /* XXX Should ignore card if non-ISA(EISA) io address? -chb */ 256 257 /* 258 * Don't attach a 3c509 in PnP mode. 259 * PnP mode was added with the 3C509B. 260 * Check some EEPROM registers to make sure this is really 261 * a 3C509B and test whether it is in PnP mode. 262 */ 263 if ((model & 0xfff0) == PROD_ID_3C509) { 264 u_int16_t cksum, eepromrev, eeprom_cap, eeprom_hi; 265 266 267 /* 268 * Fetch all the info we need to ascertain whether 269 * the card is PnP capable and in PnP mode. 270 * Skip over PnP cards. 271 */ 272 273 /* secondary configurable data checksum */ 274 cksum = epreadeeprom(iot, ioh, EEPROM_CHECKSUM_EL3) 275 & 0xFF; 276 for (i = EEPROM_CONFIG_HIGH; 277 i < EEPROM_CHECKSUM_EL3; i++) { 278 cksum ^= epreadeeprom(iot, ioh, i); 279 } 280 cksum = (cksum & 0xFF) ^ ((cksum >> 8) & 0xFF); 281 282 eepromrev = epreadeeprom(iot, ioh, EEPROM_SSI); 283 eeprom_hi = epreadeeprom(iot, ioh, EEPROM_CONFIG_HIGH); 284 eeprom_cap = epreadeeprom(iot, ioh, EEPROM_CAP); 285 286 /* 287 * Stop card responding to contention in future. 288 * (NB: stops rsponse to all reads from ID port.) 289 */ 290 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); 291 292 if (cksum != 0) { 293 #if 0 294 printf("ep_isa_probe: cksum mismatch 0x%02x\n", 295 (int)cksum); 296 #endif 297 } 298 else if ((eepromrev & 0xF) < 1) { 299 /* 3C509B is adapter revision level 1. */ 300 #if 0 301 printf("ep_isa_probe revision level 0\n"); 302 #endif 303 } 304 else if (eeprom_cap != 0x2083) { 305 #if 0 306 printf("ep_isa_probe: capabilities word mismatch0x%03x\n", 307 (int)epreadeeprom(iot, ioh, EEPROM_CAP)); 308 #endif 309 } 310 else 311 /* 312 * we have a 3c509B with PnP capabilities. 313 * Test partly documented bit which toggles when 314 * in PnP mode. 315 */ 316 if ((eeprom_hi & 8) != 0) { 317 printf("3COM 3C509B Ethernet card in PnP mode\n"); 318 continue; 319 } 320 } 321 322 /* 323 * XXX: this should probably not be done here 324 * because it enables the drq/irq lines from 325 * the board. Perhaps it should be done after 326 * we have checked for irq/drq collisions? 327 * 328 * According to the 3COM docs, this does not enable 329 * the irq lines. -chb 330 */ 331 bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); 332 333 epaddcard(bus, iobase, irq, model); 334 } 335 /* XXX should we sort by ethernet address? */ 336 337 bus_space_unmap(iot, ioh, 1); 338 339 bus_probed: 340 341 for (i = 0; i < nepcards; i++) { 342 if (epcards[i].bus != bus) 343 continue; 344 if (epcards[i].available == 0) 345 continue; 346 if (ia->ia_iobase != IOBASEUNK && 347 ia->ia_iobase != epcards[i].iobase) 348 continue; 349 if (ia->ia_irq != IRQUNK && 350 ia->ia_irq != epcards[i].irq) 351 continue; 352 goto good; 353 } 354 return 0; 355 356 good: 357 epcards[i].available = 0; 358 ia->ia_iobase = epcards[i].iobase; 359 ia->ia_irq = epcards[i].irq; 360 ia->ia_iosize = 0x10; 361 ia->ia_msize = 0; 362 ia->ia_aux = (void *)epcards[i].model; 363 return 1; 364 } 365 366 void 367 ep_isa_attach(parent, self, aux) 368 struct device *parent, *self; 369 void *aux; 370 { 371 struct ep_softc *sc = (void *)self; 372 struct isa_attach_args *ia = aux; 373 bus_space_tag_t iot = ia->ia_iot; 374 bus_space_handle_t ioh; 375 int chipset; 376 377 /* Map i/o space. */ 378 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) { 379 printf(": can't map i/o space\n"); 380 return; 381 } 382 383 sc->sc_iot = iot; 384 sc->sc_ioh = ioh; 385 sc->bustype = ELINK_BUS_ISA; 386 387 sc->enable = NULL; 388 sc->disable = NULL; 389 sc->enabled = 1; 390 391 chipset = (int)(long)ia->ia_aux; 392 if ((chipset & 0xfff0) == PROD_ID_3C509) { 393 printf(": 3Com 3C509 Ethernet\n"); 394 epconfig(sc, ELINK_CHIPSET_3C509, NULL); 395 } else { 396 /* 397 * XXX: Maybe a 3c515, but the check in ep_isa_probe looks 398 * at the moment only for a 3c509. 399 */ 400 printf(": unknown 3Com Ethernet card: %04x\n", chipset); 401 return; 402 } 403 404 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 405 IPL_NET, epintr, sc); 406 } 407
Indexes created Tue Sep 23 22:09:46 GMT 2025