1 /* $NetBSD: if_ep_isa.c,v 1.41 2007/10/19 12:00:17 ad 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@NetBSD.org> 42 * Copyright (c) 1994 Herb Peyerl <hpeyerl@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 1.41 2007/10/19 12:00:17 ad 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 <sys/cpu.h> 91 #include <sys/bus.h> 92 #include <sys/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(struct device *, struct cfdata *, void *); 103 void ep_isa_attach(struct device *, struct device *, void *); 104 105 CFATTACH_DECL(ep_isa, sizeof(struct ep_softc), 106 ep_isa_probe, ep_isa_attach, NULL, NULL); 107 108 static void epaddcard(int, int, int, int); 109 110 /* 111 * This keeps track of which ISAs have been through an ep probe sequence. 112 * A simple static variable isn't enough, since it's conceivable that 113 * a system might have more than one ISA bus. 114 * 115 * The "er_bus" member is the unit number of the parent ISA bus, e.g. "0" 116 * for "isa0". 117 */ 118 struct ep_isa_done_probe { 119 LIST_ENTRY(ep_isa_done_probe) er_link; 120 int er_bus; 121 }; 122 static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes; 123 static int ep_isa_probes_initialized; 124 125 #define MAXEPCARDS 20 /* if you have more than 20, you lose */ 126 127 static struct epcard { 128 int bus; 129 int iobase; 130 int irq; 131 char available; 132 long model; 133 } epcards[MAXEPCARDS]; 134 static int nepcards; 135 136 static void 137 epaddcard(bus, iobase, irq, model) 138 int bus, iobase, irq, model; 139 { 140 141 if (nepcards >= MAXEPCARDS) 142 return; 143 epcards[nepcards].bus = bus; 144 epcards[nepcards].iobase = iobase; 145 epcards[nepcards].irq = (irq == 2) ? 9 : irq; 146 epcards[nepcards].model = model; 147 epcards[nepcards].available = 1; 148 nepcards++; 149 } 150 151 /* 152 * 3c509 cards on the ISA bus are probed in ethernet address order. 153 * The probe sequence requires careful orchestration, and we'd like 154 * like to allow the irq and base address to be wildcarded. So, we 155 * probe all the cards the first time epprobe() is called. On subsequent 156 * calls we look for matching cards. 157 */ 158 int 159 ep_isa_probe(struct device *parent, 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, eeprom_addr_cfg; 167 struct ep_isa_done_probe *er; 168 int bus = device_unit(parent); 169 170 if (ISA_DIRECT_CONFIG(ia)) 171 return (0); 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 == device_unit(parent)) 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, device_unit(parent)); 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 eeprom_addr_cfg = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); 231 iobase = (eeprom_addr_cfg & 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 bits which toggle when 295 * in PnP mode. 296 */ 297 if ((eeprom_hi & 0x8) != 0 || ((eeprom_hi & 0xc) == 0 && 298 (eeprom_addr_cfg & 0x80) != 0)) { 299 printf("3COM 3C509B Ethernet card in PnP mode\n"); 300 continue; 301 } 302 } 303 304 /* 305 * XXX: this should probably not be done here 306 * because it enables the drq/irq lines from 307 * the board. Perhaps it should be done after 308 * we have checked for irq/drq collisions? 309 * 310 * According to the 3COM docs, this does not enable 311 * the irq lines. -chb 312 */ 313 bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); 314 315 epaddcard(bus, iobase, irq, model); 316 } 317 /* XXX should we sort by ethernet address? */ 318 319 bus_space_unmap(iot, ioh, 1); 320 321 bus_probed: 322 323 if (ia->ia_nio < 1) 324 return (0); 325 if (ia->ia_nirq < 1) 326 return (0); 327 328 for (i = 0; i < nepcards; i++) { 329 if (epcards[i].bus != bus) 330 continue; 331 if (epcards[i].available == 0) 332 continue; 333 334 if (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT && 335 ia->ia_io[0].ir_addr != epcards[i].iobase) 336 continue; 337 338 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 339 ia->ia_irq[0].ir_irq != epcards[i].irq) 340 continue; 341 342 goto good; 343 } 344 return 0; 345 346 good: 347 epcards[i].available = 0; 348 349 ia->ia_nio = 1; 350 ia->ia_io[0].ir_addr = epcards[i].iobase; 351 ia->ia_io[0].ir_size = 0x10; 352 353 ia->ia_nirq = 1; 354 ia->ia_irq[0].ir_irq = epcards[i].irq; 355 356 ia->ia_niomem = 0; 357 ia->ia_ndrq = 0; 358 359 ia->ia_aux = (void *)epcards[i].model; 360 return 1; 361 } 362 363 void 364 ep_isa_attach(struct device *parent, struct device *self, void *aux) 365 { 366 struct ep_softc *sc = (void *)self; 367 struct isa_attach_args *ia = aux; 368 bus_space_tag_t iot = ia->ia_iot; 369 bus_space_handle_t ioh; 370 int chipset; 371 372 /* Map i/o space. */ 373 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x10, 0, &ioh)) { 374 printf(": can't map i/o space\n"); 375 return; 376 } 377 378 sc->sc_iot = iot; 379 sc->sc_ioh = ioh; 380 sc->bustype = ELINK_BUS_ISA; 381 382 sc->enable = NULL; 383 sc->disable = NULL; 384 sc->enabled = 1; 385 386 chipset = (int)(long)ia->ia_aux; 387 if ((chipset & 0xfff0) == PROD_ID_3C509) { 388 printf(": 3Com 3C509 Ethernet\n"); 389 epconfig(sc, ELINK_CHIPSET_3C509, NULL); 390 } else { 391 /* 392 * XXX: Maybe a 3c515, but the check in ep_isa_probe looks 393 * at the moment only for a 3c509. 394 */ 395 printf(": unknown 3Com Ethernet card: %04x\n", chipset); 396 return; 397 } 398 399 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 400 IST_EDGE, IPL_NET, epintr, sc); 401 } 402