if_ep_isa.c revision 1.28
1 /* $NetBSD: if_ep_isa.c,v 1.28 2001/09/02 06:46:57 tsutsui 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/param.h> 72 #include <sys/systm.h> 73 #include <sys/mbuf.h> 74 #include <sys/socket.h> 75 #include <sys/ioctl.h> 76 #include <sys/errno.h> 77 #include <sys/syslog.h> 78 #include <sys/select.h> 79 #include <sys/device.h> 80 #include <sys/queue.h> 81 82 #include <net/if.h> 83 #include <net/if_dl.h> 84 #include <net/if_ether.h> 85 #include <net/if_media.h> 86 87 #include <machine/cpu.h> 88 #include <machine/bus.h> 89 #include <machine/intr.h> 90 91 #include <dev/mii/miivar.h> 92 93 #include <dev/ic/elink3var.h> 94 #include <dev/ic/elink3reg.h> 95 96 #include <dev/isa/isavar.h> 97 #include <dev/isa/elink.h> 98 99 int ep_isa_probe __P((struct device *, struct cfdata *, void *)); 100 void ep_isa_attach __P((struct device *, struct device *, void *)); 101 102 struct cfattach ep_isa_ca = { 103 sizeof(struct ep_softc), ep_isa_probe, ep_isa_attach 104 }; 105 106 static void epaddcard __P((int, int, int, int)); 107 108 /* 109 * This keeps track of which ISAs have been through an ep probe sequence. 110 * A simple static variable isn't enough, since it's conceivable that 111 * a system might have more than one ISA bus. 112 * 113 * The "er_bus" member is the unit number of the parent ISA bus, e.g. "0" 114 * for "isa0". 115 */ 116 struct ep_isa_done_probe { 117 LIST_ENTRY(ep_isa_done_probe) er_link; 118 int er_bus; 119 }; 120 static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes; 121 static int ep_isa_probes_initialized; 122 123 #define MAXEPCARDS 20 /* if you have more than 20, you lose */ 124 125 static struct epcard { 126 int bus; 127 int iobase; 128 int irq; 129 char available; 130 long model; 131 } epcards[MAXEPCARDS]; 132 static int nepcards; 133 134 static void 135 epaddcard(bus, iobase, irq, model) 136 int bus, iobase, irq, model; 137 { 138 139 if (nepcards >= MAXEPCARDS) 140 return; 141 epcards[nepcards].bus = bus; 142 epcards[nepcards].iobase = iobase; 143 epcards[nepcards].irq = (irq == 2) ? 9 : irq; 144 epcards[nepcards].model = model; 145 epcards[nepcards].available = 1; 146 nepcards++; 147 } 148 149 /* 150 * 3c509 cards on the ISA bus are probed in ethernet address order. 151 * The probe sequence requires careful orchestration, and we'd like 152 * like to allow the irq and base address to be wildcarded. So, we 153 * probe all the cards the first time epprobe() is called. On subsequent 154 * calls we look for matching cards. 155 */ 156 int 157 ep_isa_probe(parent, match, aux) 158 struct device *parent; 159 struct cfdata *match; 160 void *aux; 161 { 162 struct isa_attach_args *ia = aux; 163 bus_space_tag_t iot = ia->ia_iot; 164 bus_space_handle_t ioh; 165 int slot, iobase, irq, i; 166 u_int16_t vendor, model; 167 struct ep_isa_done_probe *er; 168 int bus = parent->dv_unit; 169 170 if (ep_isa_probes_initialized == 0) { 171 LIST_INIT(&ep_isa_all_probes); 172 ep_isa_probes_initialized = 1; 173 } 174 175 /* 176 * Probe this bus if we haven't done so already. 177 */ 178 for (er = ep_isa_all_probes.lh_first; er != NULL; 179 er = er->er_link.le_next) 180 if (er->er_bus == parent->dv_unit) 181 goto bus_probed; 182 183 /* 184 * Mark this bus so we don't probe it again. 185 */ 186 er = (struct ep_isa_done_probe *) 187 malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT); 188 if (er == NULL) 189 panic("ep_isa_probe: can't allocate state storage"); 190 191 er->er_bus = bus; 192 LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link); 193 194 /* 195 * Map the Etherlink ID port for the probe sequence. 196 */ 197 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 198 printf("ep_isa_probe: can't map Etherlink ID port\n"); 199 return 0; 200 } 201 202 for (slot = 0; slot < MAXEPCARDS; slot++) { 203 elink_reset(iot, ioh, parent->dv_unit); 204 elink_idseq(iot, ioh, ELINK_509_POLY); 205 206 /* Untag all the adapters so they will talk to us. */ 207 if (slot == 0) 208 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0); 209 210 vendor = bswap16(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); 211 if (vendor != MFG_ID) 212 continue; 213 214 model = bswap16(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); 215 /* 216 * XXX: Add a new product id to check for other cards 217 * (3c515?) and fix the check in ep_isa_attach. 218 */ 219 if ((model & 0xfff0) != PROD_ID_3C509) { 220 #ifndef trusted 221 printf( 222 "ep_isa_probe: ignoring model %04x\n", model); 223 #endif 224 continue; 225 } 226 227 iobase = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); 228 iobase = (iobase & 0x1f) * 0x10 + 0x200; 229 230 irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); 231 irq >>= 12; 232 233 /* XXX Should ignore card if non-ISA(EISA) io address? -chb */ 234 235 /* 236 * Don't attach a 3c509 in PnP mode. 237 * PnP mode was added with the 3C509B. 238 * Check some EEPROM registers to make sure this is really 239 * a 3C509B and test whether it is in PnP mode. 240 */ 241 if ((model & 0xfff0) == PROD_ID_3C509) { 242 u_int16_t cksum, eepromrev, eeprom_cap, eeprom_hi; 243 244 245 /* 246 * Fetch all the info we need to ascertain whether 247 * the card is PnP capable and in PnP mode. 248 * Skip over PnP cards. 249 */ 250 251 /* secondary configurable data checksum */ 252 cksum = epreadeeprom(iot, ioh, EEPROM_CHECKSUM_EL3) 253 & 0xFF; 254 for (i = EEPROM_CONFIG_HIGH; 255 i < EEPROM_CHECKSUM_EL3; i++) { 256 cksum ^= epreadeeprom(iot, ioh, i); 257 } 258 cksum = (cksum & 0xFF) ^ ((cksum >> 8) & 0xFF); 259 260 eepromrev = epreadeeprom(iot, ioh, EEPROM_SSI); 261 eeprom_hi = epreadeeprom(iot, ioh, EEPROM_CONFIG_HIGH); 262 eeprom_cap = epreadeeprom(iot, ioh, EEPROM_CAP); 263 264 /* 265 * Stop card responding to contention in future. 266 * (NB: stops rsponse to all reads from ID port.) 267 */ 268 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); 269 270 if (cksum != 0) { 271 #if 0 272 printf("ep_isa_probe: cksum mismatch 0x%02x\n", 273 (int)cksum); 274 #endif 275 } 276 else if ((eepromrev & 0xF) < 1) { 277 /* 3C509B is adapter revision level 1. */ 278 #if 0 279 printf("ep_isa_probe revision level 0\n"); 280 #endif 281 } 282 else if (eeprom_cap != 0x2083) { 283 #if 0 284 printf("ep_isa_probe: capabilities word mismatch0x%03x\n", 285 (int)epreadeeprom(iot, ioh, EEPROM_CAP)); 286 #endif 287 } 288 else 289 /* 290 * we have a 3c509B with PnP capabilities. 291 * Test partly documented bit which toggles when 292 * in PnP mode. 293 */ 294 if ((eeprom_hi & 8) != 0) { 295 printf("3COM 3C509B Ethernet card in PnP mode\n"); 296 continue; 297 } 298 } 299 300 /* 301 * XXX: this should probably not be done here 302 * because it enables the drq/irq lines from 303 * the board. Perhaps it should be done after 304 * we have checked for irq/drq collisions? 305 * 306 * According to the 3COM docs, this does not enable 307 * the irq lines. -chb 308 */ 309 bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); 310 311 epaddcard(bus, iobase, irq, model); 312 } 313 /* XXX should we sort by ethernet address? */ 314 315 bus_space_unmap(iot, ioh, 1); 316 317 bus_probed: 318 319 for (i = 0; i < nepcards; i++) { 320 if (epcards[i].bus != bus) 321 continue; 322 if (epcards[i].available == 0) 323 continue; 324 if (ia->ia_iobase != IOBASEUNK && 325 ia->ia_iobase != epcards[i].iobase) 326 continue; 327 if (ia->ia_irq != IRQUNK && 328 ia->ia_irq != epcards[i].irq) 329 continue; 330 goto good; 331 } 332 return 0; 333 334 good: 335 epcards[i].available = 0; 336 ia->ia_iobase = epcards[i].iobase; 337 ia->ia_irq = epcards[i].irq; 338 ia->ia_iosize = 0x10; 339 ia->ia_msize = 0; 340 ia->ia_aux = (void *)epcards[i].model; 341 return 1; 342 } 343 344 void 345 ep_isa_attach(parent, self, aux) 346 struct device *parent, *self; 347 void *aux; 348 { 349 struct ep_softc *sc = (void *)self; 350 struct isa_attach_args *ia = aux; 351 bus_space_tag_t iot = ia->ia_iot; 352 bus_space_handle_t ioh; 353 int chipset; 354 355 /* Map i/o space. */ 356 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) { 357 printf(": can't map i/o space\n"); 358 return; 359 } 360 361 sc->sc_iot = iot; 362 sc->sc_ioh = ioh; 363 sc->bustype = ELINK_BUS_ISA; 364 365 sc->enable = NULL; 366 sc->disable = NULL; 367 sc->enabled = 1; 368 369 chipset = (int)(long)ia->ia_aux; 370 if ((chipset & 0xfff0) == PROD_ID_3C509) { 371 printf(": 3Com 3C509 Ethernet\n"); 372 epconfig(sc, ELINK_CHIPSET_3C509, NULL); 373 } else { 374 /* 375 * XXX: Maybe a 3c515, but the check in ep_isa_probe looks 376 * at the moment only for a 3c509. 377 */ 378 printf(": unknown 3Com Ethernet card: %04x\n", chipset); 379 return; 380 } 381 382 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 383 IPL_NET, epintr, sc); 384 } 385
Indexes created Mon Sep 29 03:10:08 GMT 2025