if_ep_isa.c revision 1.29
1 /* $NetBSD: if_ep_isa.c,v 1.29 2001/11/13 08:01:18 lukem 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 <sys/cdefs.h> 72 __KERNEL_RCSID(0, "$NetBSD: if_ep_isa.c,v 1.29 2001/11/13 08:01:18 lukem Exp $"); 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/mbuf.h> 77 #include <sys/socket.h> 78 #include <sys/ioctl.h> 79 #include <sys/errno.h> 80 #include <sys/syslog.h> 81 #include <sys/select.h> 82 #include <sys/device.h> 83 #include <sys/queue.h> 84 85 #include <net/if.h> 86 #include <net/if_dl.h> 87 #include <net/if_ether.h> 88 #include <net/if_media.h> 89 90 #include <machine/cpu.h> 91 #include <machine/bus.h> 92 #include <machine/intr.h> 93 94 #include <dev/mii/miivar.h> 95 96 #include <dev/ic/elink3var.h> 97 #include <dev/ic/elink3reg.h> 98 99 #include <dev/isa/isavar.h> 100 #include <dev/isa/elink.h> 101 102 int ep_isa_probe __P((struct device *, struct cfdata *, void *)); 103 void ep_isa_attach __P((struct device *, struct device *, void *)); 104 105 struct cfattach ep_isa_ca = { 106 sizeof(struct ep_softc), ep_isa_probe, ep_isa_attach 107 }; 108 109 static void epaddcard __P((int, int, int, int)); 110 111 /* 112 * This keeps track of which ISAs have been through an ep probe sequence. 113 * A simple static variable isn't enough, since it's conceivable that 114 * a system might have more than one ISA bus. 115 * 116 * The "er_bus" member is the unit number of the parent ISA bus, e.g. "0" 117 * for "isa0". 118 */ 119 struct ep_isa_done_probe { 120 LIST_ENTRY(ep_isa_done_probe) er_link; 121 int er_bus; 122 }; 123 static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes; 124 static int ep_isa_probes_initialized; 125 126 #define MAXEPCARDS 20 /* if you have more than 20, you lose */ 127 128 static struct epcard { 129 int bus; 130 int iobase; 131 int irq; 132 char available; 133 long model; 134 } epcards[MAXEPCARDS]; 135 static int nepcards; 136 137 static void 138 epaddcard(bus, iobase, irq, model) 139 int bus, iobase, irq, model; 140 { 141 142 if (nepcards >= MAXEPCARDS) 143 return; 144 epcards[nepcards].bus = bus; 145 epcards[nepcards].iobase = iobase; 146 epcards[nepcards].irq = (irq == 2) ? 9 : irq; 147 epcards[nepcards].model = model; 148 epcards[nepcards].available = 1; 149 nepcards++; 150 } 151 152 /* 153 * 3c509 cards on the ISA bus are probed in ethernet address order. 154 * The probe sequence requires careful orchestration, and we'd like 155 * like to allow the irq and base address to be wildcarded. So, we 156 * probe all the cards the first time epprobe() is called. On subsequent 157 * calls we look for matching cards. 158 */ 159 int 160 ep_isa_probe(parent, match, aux) 161 struct device *parent; 162 struct cfdata *match; 163 void *aux; 164 { 165 struct isa_attach_args *ia = aux; 166 bus_space_tag_t iot = ia->ia_iot; 167 bus_space_handle_t ioh; 168 int slot, iobase, irq, i; 169 u_int16_t vendor, model; 170 struct ep_isa_done_probe *er; 171 int bus = parent->dv_unit; 172 173 if (ep_isa_probes_initialized == 0) { 174 LIST_INIT(&ep_isa_all_probes); 175 ep_isa_probes_initialized = 1; 176 } 177 178 /* 179 * Probe this bus if we haven't done so already. 180 */ 181 for (er = ep_isa_all_probes.lh_first; er != NULL; 182 er = er->er_link.le_next) 183 if (er->er_bus == parent->dv_unit) 184 goto bus_probed; 185 186 /* 187 * Mark this bus so we don't probe it again. 188 */ 189 er = (struct ep_isa_done_probe *) 190 malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT); 191 if (er == NULL) 192 panic("ep_isa_probe: can't allocate state storage"); 193 194 er->er_bus = bus; 195 LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link); 196 197 /* 198 * Map the Etherlink ID port for the probe sequence. 199 */ 200 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 201 printf("ep_isa_probe: can't map Etherlink ID port\n"); 202 return 0; 203 } 204 205 for (slot = 0; slot < MAXEPCARDS; slot++) { 206 elink_reset(iot, ioh, parent->dv_unit); 207 elink_idseq(iot, ioh, ELINK_509_POLY); 208 209 /* Untag all the adapters so they will talk to us. */ 210 if (slot == 0) 211 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0); 212 213 vendor = bswap16(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); 214 if (vendor != MFG_ID) 215 continue; 216 217 model = bswap16(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); 218 /* 219 * XXX: Add a new product id to check for other cards 220 * (3c515?) and fix the check in ep_isa_attach. 221 */ 222 if ((model & 0xfff0) != PROD_ID_3C509) { 223 #ifndef trusted 224 printf( 225 "ep_isa_probe: ignoring model %04x\n", model); 226 #endif 227 continue; 228 } 229 230 iobase = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); 231 iobase = (iobase & 0x1f) * 0x10 + 0x200; 232 233 irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); 234 irq >>= 12; 235 236 /* XXX Should ignore card if non-ISA(EISA) io address? -chb */ 237 238 /* 239 * Don't attach a 3c509 in PnP mode. 240 * PnP mode was added with the 3C509B. 241 * Check some EEPROM registers to make sure this is really 242 * a 3C509B and test whether it is in PnP mode. 243 */ 244 if ((model & 0xfff0) == PROD_ID_3C509) { 245 u_int16_t cksum, eepromrev, eeprom_cap, eeprom_hi; 246 247 248 /* 249 * Fetch all the info we need to ascertain whether 250 * the card is PnP capable and in PnP mode. 251 * Skip over PnP cards. 252 */ 253 254 /* secondary configurable data checksum */ 255 cksum = epreadeeprom(iot, ioh, EEPROM_CHECKSUM_EL3) 256 & 0xFF; 257 for (i = EEPROM_CONFIG_HIGH; 258 i < EEPROM_CHECKSUM_EL3; i++) { 259 cksum ^= epreadeeprom(iot, ioh, i); 260 } 261 cksum = (cksum & 0xFF) ^ ((cksum >> 8) & 0xFF); 262 263 eepromrev = epreadeeprom(iot, ioh, EEPROM_SSI); 264 eeprom_hi = epreadeeprom(iot, ioh, EEPROM_CONFIG_HIGH); 265 eeprom_cap = epreadeeprom(iot, ioh, EEPROM_CAP); 266 267 /* 268 * Stop card responding to contention in future. 269 * (NB: stops rsponse to all reads from ID port.) 270 */ 271 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); 272 273 if (cksum != 0) { 274 #if 0 275 printf("ep_isa_probe: cksum mismatch 0x%02x\n", 276 (int)cksum); 277 #endif 278 } 279 else if ((eepromrev & 0xF) < 1) { 280 /* 3C509B is adapter revision level 1. */ 281 #if 0 282 printf("ep_isa_probe revision level 0\n"); 283 #endif 284 } 285 else if (eeprom_cap != 0x2083) { 286 #if 0 287 printf("ep_isa_probe: capabilities word mismatch0x%03x\n", 288 (int)epreadeeprom(iot, ioh, EEPROM_CAP)); 289 #endif 290 } 291 else 292 /* 293 * we have a 3c509B with PnP capabilities. 294 * Test partly documented bit which toggles when 295 * in PnP mode. 296 */ 297 if ((eeprom_hi & 8) != 0) { 298 printf("3COM 3C509B Ethernet card in PnP mode\n"); 299 continue; 300 } 301 } 302 303 /* 304 * XXX: this should probably not be done here 305 * because it enables the drq/irq lines from 306 * the board. Perhaps it should be done after 307 * we have checked for irq/drq collisions? 308 * 309 * According to the 3COM docs, this does not enable 310 * the irq lines. -chb 311 */ 312 bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); 313 314 epaddcard(bus, iobase, irq, model); 315 } 316 /* XXX should we sort by ethernet address? */ 317 318 bus_space_unmap(iot, ioh, 1); 319 320 bus_probed: 321 322 for (i = 0; i < nepcards; i++) { 323 if (epcards[i].bus != bus) 324 continue; 325 if (epcards[i].available == 0) 326 continue; 327 if (ia->ia_iobase != IOBASEUNK && 328 ia->ia_iobase != epcards[i].iobase) 329 continue; 330 if (ia->ia_irq != IRQUNK && 331 ia->ia_irq != epcards[i].irq) 332 continue; 333 goto good; 334 } 335 return 0; 336 337 good: 338 epcards[i].available = 0; 339 ia->ia_iobase = epcards[i].iobase; 340 ia->ia_irq = epcards[i].irq; 341 ia->ia_iosize = 0x10; 342 ia->ia_msize = 0; 343 ia->ia_aux = (void *)epcards[i].model; 344 return 1; 345 } 346 347 void 348 ep_isa_attach(parent, self, aux) 349 struct device *parent, *self; 350 void *aux; 351 { 352 struct ep_softc *sc = (void *)self; 353 struct isa_attach_args *ia = aux; 354 bus_space_tag_t iot = ia->ia_iot; 355 bus_space_handle_t ioh; 356 int chipset; 357 358 /* Map i/o space. */ 359 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) { 360 printf(": can't map i/o space\n"); 361 return; 362 } 363 364 sc->sc_iot = iot; 365 sc->sc_ioh = ioh; 366 sc->bustype = ELINK_BUS_ISA; 367 368 sc->enable = NULL; 369 sc->disable = NULL; 370 sc->enabled = 1; 371 372 chipset = (int)(long)ia->ia_aux; 373 if ((chipset & 0xfff0) == PROD_ID_3C509) { 374 printf(": 3Com 3C509 Ethernet\n"); 375 epconfig(sc, ELINK_CHIPSET_3C509, NULL); 376 } else { 377 /* 378 * XXX: Maybe a 3c515, but the check in ep_isa_probe looks 379 * at the moment only for a 3c509. 380 */ 381 printf(": unknown 3Com Ethernet card: %04x\n", chipset); 382 return; 383 } 384 385 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 386 IPL_NET, epintr, sc); 387 } 388
Indexes created Wed Sep 24 05:09:52 GMT 2025