if_ep_isa.c revision 1.41.20.1
1 /* $NetBSD: if_ep_isa.c,v 1.41.20.1 2008/05/16 02:24:27 yamt 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Jonathan Stone <jonathan (at) NetBSD.org> 35 * Copyright (c) 1994 Herb Peyerl <hpeyerl (at) beer.org> 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by Herb Peyerl. 49 * 4. The name of Herb Peyerl may not be used to endorse or promote products 50 * derived from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 53 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 54 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 55 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 56 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 57 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 61 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 */ 63 64 #include <sys/cdefs.h> 65 __KERNEL_RCSID(0, "$NetBSD: if_ep_isa.c,v 1.41.20.1 2008/05/16 02:24:27 yamt Exp $"); 66 67 #include <sys/param.h> 68 #include <sys/systm.h> 69 #include <sys/mbuf.h> 70 #include <sys/socket.h> 71 #include <sys/ioctl.h> 72 #include <sys/errno.h> 73 #include <sys/syslog.h> 74 #include <sys/select.h> 75 #include <sys/device.h> 76 #include <sys/queue.h> 77 78 #include <net/if.h> 79 #include <net/if_dl.h> 80 #include <net/if_ether.h> 81 #include <net/if_media.h> 82 83 #include <sys/cpu.h> 84 #include <sys/bus.h> 85 #include <sys/intr.h> 86 87 #include <dev/mii/miivar.h> 88 89 #include <dev/ic/elink3var.h> 90 #include <dev/ic/elink3reg.h> 91 92 #include <dev/isa/isavar.h> 93 #include <dev/isa/elink.h> 94 95 int ep_isa_probe(struct device *, struct cfdata *, void *); 96 void ep_isa_attach(struct device *, struct device *, void *); 97 98 CFATTACH_DECL(ep_isa, sizeof(struct ep_softc), 99 ep_isa_probe, ep_isa_attach, NULL, NULL); 100 101 static void epaddcard(int, int, int, int); 102 103 /* 104 * This keeps track of which ISAs have been through an ep probe sequence. 105 * A simple static variable isn't enough, since it's conceivable that 106 * a system might have more than one ISA bus. 107 * 108 * The "er_bus" member is the unit number of the parent ISA bus, e.g. "0" 109 * for "isa0". 110 */ 111 struct ep_isa_done_probe { 112 LIST_ENTRY(ep_isa_done_probe) er_link; 113 int er_bus; 114 }; 115 static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes; 116 static int ep_isa_probes_initialized; 117 118 #define MAXEPCARDS 20 /* if you have more than 20, you lose */ 119 120 static struct epcard { 121 int bus; 122 int iobase; 123 int irq; 124 char available; 125 long model; 126 } epcards[MAXEPCARDS]; 127 static int nepcards; 128 129 static void 130 epaddcard(bus, iobase, irq, model) 131 int bus, iobase, irq, model; 132 { 133 134 if (nepcards >= MAXEPCARDS) 135 return; 136 epcards[nepcards].bus = bus; 137 epcards[nepcards].iobase = iobase; 138 epcards[nepcards].irq = (irq == 2) ? 9 : irq; 139 epcards[nepcards].model = model; 140 epcards[nepcards].available = 1; 141 nepcards++; 142 } 143 144 /* 145 * 3c509 cards on the ISA bus are probed in ethernet address order. 146 * The probe sequence requires careful orchestration, and we'd like 147 * like to allow the irq and base address to be wildcarded. So, we 148 * probe all the cards the first time epprobe() is called. On subsequent 149 * calls we look for matching cards. 150 */ 151 int 152 ep_isa_probe(struct device *parent, struct cfdata *match, 153 void *aux) 154 { 155 struct isa_attach_args *ia = aux; 156 bus_space_tag_t iot = ia->ia_iot; 157 bus_space_handle_t ioh; 158 int slot, iobase, irq, i; 159 u_int16_t vendor, model, eeprom_addr_cfg; 160 struct ep_isa_done_probe *er; 161 int bus = device_unit(parent); 162 163 if (ISA_DIRECT_CONFIG(ia)) 164 return (0); 165 166 if (ep_isa_probes_initialized == 0) { 167 LIST_INIT(&ep_isa_all_probes); 168 ep_isa_probes_initialized = 1; 169 } 170 171 /* 172 * Probe this bus if we haven't done so already. 173 */ 174 for (er = ep_isa_all_probes.lh_first; er != NULL; 175 er = er->er_link.le_next) 176 if (er->er_bus == device_unit(parent)) 177 goto bus_probed; 178 179 /* 180 * Mark this bus so we don't probe it again. 181 */ 182 er = (struct ep_isa_done_probe *) 183 malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT); 184 if (er == NULL) 185 panic("ep_isa_probe: can't allocate state storage"); 186 187 er->er_bus = bus; 188 LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link); 189 190 /* 191 * Map the Etherlink ID port for the probe sequence. 192 */ 193 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 194 printf("ep_isa_probe: can't map Etherlink ID port\n"); 195 return 0; 196 } 197 198 for (slot = 0; slot < MAXEPCARDS; slot++) { 199 elink_reset(iot, ioh, device_unit(parent)); 200 elink_idseq(iot, ioh, ELINK_509_POLY); 201 202 /* Untag all the adapters so they will talk to us. */ 203 if (slot == 0) 204 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0); 205 206 vendor = bswap16(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); 207 if (vendor != MFG_ID) 208 continue; 209 210 model = bswap16(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); 211 /* 212 * XXX: Add a new product id to check for other cards 213 * (3c515?) and fix the check in ep_isa_attach. 214 */ 215 if ((model & 0xfff0) != PROD_ID_3C509) { 216 #ifndef trusted 217 printf( 218 "ep_isa_probe: ignoring model %04x\n", model); 219 #endif 220 continue; 221 } 222 223 eeprom_addr_cfg = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); 224 iobase = (eeprom_addr_cfg & 0x1f) * 0x10 + 0x200; 225 226 irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); 227 irq >>= 12; 228 229 /* XXX Should ignore card if non-ISA(EISA) io address? -chb */ 230 231 /* 232 * Don't attach a 3c509 in PnP mode. 233 * PnP mode was added with the 3C509B. 234 * Check some EEPROM registers to make sure this is really 235 * a 3C509B and test whether it is in PnP mode. 236 */ 237 if ((model & 0xfff0) == PROD_ID_3C509) { 238 u_int16_t cksum, eepromrev, eeprom_cap, eeprom_hi; 239 240 241 /* 242 * Fetch all the info we need to ascertain whether 243 * the card is PnP capable and in PnP mode. 244 * Skip over PnP cards. 245 */ 246 247 /* secondary configurable data checksum */ 248 cksum = epreadeeprom(iot, ioh, EEPROM_CHECKSUM_EL3) 249 & 0xFF; 250 for (i = EEPROM_CONFIG_HIGH; 251 i < EEPROM_CHECKSUM_EL3; i++) { 252 cksum ^= epreadeeprom(iot, ioh, i); 253 } 254 cksum = (cksum & 0xFF) ^ ((cksum >> 8) & 0xFF); 255 256 eepromrev = epreadeeprom(iot, ioh, EEPROM_SSI); 257 eeprom_hi = epreadeeprom(iot, ioh, EEPROM_CONFIG_HIGH); 258 eeprom_cap = epreadeeprom(iot, ioh, EEPROM_CAP); 259 260 /* 261 * Stop card responding to contention in future. 262 * (NB: stops rsponse to all reads from ID port.) 263 */ 264 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); 265 266 if (cksum != 0) { 267 #if 0 268 printf("ep_isa_probe: cksum mismatch 0x%02x\n", 269 (int)cksum); 270 #endif 271 } 272 else if ((eepromrev & 0xF) < 1) { 273 /* 3C509B is adapter revision level 1. */ 274 #if 0 275 printf("ep_isa_probe: revision level 0\n"); 276 #endif 277 } 278 else if (eeprom_cap != 0x2083) { 279 #if 0 280 printf("ep_isa_probe: capabilities word mismatch0x%03x\n", 281 (int)epreadeeprom(iot, ioh, EEPROM_CAP)); 282 #endif 283 } 284 else 285 /* 286 * we have a 3c509B with PnP capabilities. 287 * Test partly documented bits which toggle when 288 * in PnP mode. 289 */ 290 if ((eeprom_hi & 0x8) != 0 || ((eeprom_hi & 0xc) == 0 && 291 (eeprom_addr_cfg & 0x80) != 0)) { 292 printf("3COM 3C509B Ethernet card in PnP mode\n"); 293 continue; 294 } 295 } 296 297 /* 298 * XXX: this should probably not be done here 299 * because it enables the drq/irq lines from 300 * the board. Perhaps it should be done after 301 * we have checked for irq/drq collisions? 302 * 303 * According to the 3COM docs, this does not enable 304 * the irq lines. -chb 305 */ 306 bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); 307 308 epaddcard(bus, iobase, irq, model); 309 } 310 /* XXX should we sort by ethernet address? */ 311 312 bus_space_unmap(iot, ioh, 1); 313 314 bus_probed: 315 316 if (ia->ia_nio < 1) 317 return (0); 318 if (ia->ia_nirq < 1) 319 return (0); 320 321 for (i = 0; i < nepcards; i++) { 322 if (epcards[i].bus != bus) 323 continue; 324 if (epcards[i].available == 0) 325 continue; 326 327 if (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT && 328 ia->ia_io[0].ir_addr != epcards[i].iobase) 329 continue; 330 331 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 332 ia->ia_irq[0].ir_irq != epcards[i].irq) 333 continue; 334 335 goto good; 336 } 337 return 0; 338 339 good: 340 epcards[i].available = 0; 341 342 ia->ia_nio = 1; 343 ia->ia_io[0].ir_addr = epcards[i].iobase; 344 ia->ia_io[0].ir_size = 0x10; 345 346 ia->ia_nirq = 1; 347 ia->ia_irq[0].ir_irq = epcards[i].irq; 348 349 ia->ia_niomem = 0; 350 ia->ia_ndrq = 0; 351 352 ia->ia_aux = (void *)epcards[i].model; 353 return 1; 354 } 355 356 void 357 ep_isa_attach(struct device *parent, struct device *self, void *aux) 358 { 359 struct ep_softc *sc = (void *)self; 360 struct isa_attach_args *ia = aux; 361 bus_space_tag_t iot = ia->ia_iot; 362 bus_space_handle_t ioh; 363 int chipset; 364 365 /* Map i/o space. */ 366 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x10, 0, &ioh)) { 367 printf(": can't map i/o space\n"); 368 return; 369 } 370 371 sc->sc_iot = iot; 372 sc->sc_ioh = ioh; 373 sc->bustype = ELINK_BUS_ISA; 374 375 sc->enable = NULL; 376 sc->disable = NULL; 377 sc->enabled = 1; 378 379 chipset = (int)(long)ia->ia_aux; 380 if ((chipset & 0xfff0) == PROD_ID_3C509) { 381 printf(": 3Com 3C509 Ethernet\n"); 382 epconfig(sc, ELINK_CHIPSET_3C509, NULL); 383 } else { 384 /* 385 * XXX: Maybe a 3c515, but the check in ep_isa_probe looks 386 * at the moment only for a 3c509. 387 */ 388 printf(": unknown 3Com Ethernet card: %04x\n", chipset); 389 return; 390 } 391 392 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 393 IST_EDGE, IPL_NET, epintr, sc); 394 } 395
Indexes created Wed Oct 15 07:09:58 GMT 2025