if_ep_isa.c revision 1.43
1 /* $NetBSD: if_ep_isa.c,v 1.43 2008/08/27 05:33:47 christos 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 1.43 2008/08/27 05:33:47 christos 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(device_t , cfdata_t , void *); 96 void ep_isa_attach(device_t , device_t , void *); 97 98 CFATTACH_DECL_NEW(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(device_t parent, cfdata_t match, void *aux) 153 { 154 struct isa_attach_args *ia = aux; 155 bus_space_tag_t iot = ia->ia_iot; 156 bus_space_handle_t ioh; 157 int slot, iobase, irq, i; 158 u_int16_t vendor, model, eeprom_addr_cfg; 159 struct ep_isa_done_probe *er; 160 int bus = device_unit(parent); 161 162 if (ISA_DIRECT_CONFIG(ia)) 163 return (0); 164 165 if (ep_isa_probes_initialized == 0) { 166 LIST_INIT(&ep_isa_all_probes); 167 ep_isa_probes_initialized = 1; 168 } 169 170 /* 171 * Probe this bus if we haven't done so already. 172 */ 173 for (er = ep_isa_all_probes.lh_first; er != NULL; 174 er = er->er_link.le_next) 175 if (er->er_bus == device_unit(parent)) 176 goto bus_probed; 177 178 /* 179 * Mark this bus so we don't probe it again. 180 */ 181 er = (struct ep_isa_done_probe *) 182 malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT); 183 if (er == NULL) 184 panic("ep_isa_probe: can't allocate state storage"); 185 186 er->er_bus = bus; 187 LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link); 188 189 /* 190 * Map the Etherlink ID port for the probe sequence. 191 */ 192 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 193 printf("ep_isa_probe: can't map Etherlink ID port\n"); 194 return 0; 195 } 196 197 for (slot = 0; slot < MAXEPCARDS; slot++) { 198 elink_reset(iot, ioh, device_unit(parent)); 199 elink_idseq(iot, ioh, ELINK_509_POLY); 200 201 /* Untag all the adapters so they will talk to us. */ 202 if (slot == 0) 203 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0); 204 205 vendor = bswap16(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); 206 if (vendor != MFG_ID) 207 continue; 208 209 model = bswap16(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); 210 /* 211 * XXX: Add a new product id to check for other cards 212 * (3c515?) and fix the check in ep_isa_attach. 213 */ 214 if ((model & 0xfff0) != PROD_ID_3C509) { 215 #ifndef trusted 216 printf( 217 "ep_isa_probe: ignoring model %04x\n", model); 218 #endif 219 continue; 220 } 221 222 eeprom_addr_cfg = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); 223 iobase = (eeprom_addr_cfg & 0x1f) * 0x10 + 0x200; 224 225 irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); 226 irq >>= 12; 227 228 /* XXX Should ignore card if non-ISA(EISA) io address? -chb */ 229 230 /* 231 * Don't attach a 3c509 in PnP mode. 232 * PnP mode was added with the 3C509B. 233 * Check some EEPROM registers to make sure this is really 234 * a 3C509B and test whether it is in PnP mode. 235 */ 236 if ((model & 0xfff0) == PROD_ID_3C509) { 237 u_int16_t cksum, eepromrev, eeprom_cap, eeprom_hi; 238 239 240 /* 241 * Fetch all the info we need to ascertain whether 242 * the card is PnP capable and in PnP mode. 243 * Skip over PnP cards. 244 */ 245 246 /* secondary configurable data checksum */ 247 cksum = epreadeeprom(iot, ioh, EEPROM_CHECKSUM_EL3) 248 & 0xFF; 249 for (i = EEPROM_CONFIG_HIGH; 250 i < EEPROM_CHECKSUM_EL3; i++) { 251 cksum ^= epreadeeprom(iot, ioh, i); 252 } 253 cksum = (cksum & 0xFF) ^ ((cksum >> 8) & 0xFF); 254 255 eepromrev = epreadeeprom(iot, ioh, EEPROM_SSI); 256 eeprom_hi = epreadeeprom(iot, ioh, EEPROM_CONFIG_HIGH); 257 eeprom_cap = epreadeeprom(iot, ioh, EEPROM_CAP); 258 259 /* 260 * Stop card responding to contention in future. 261 * (NB: stops rsponse to all reads from ID port.) 262 */ 263 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); 264 265 if (cksum != 0) { 266 #if 0 267 printf("ep_isa_probe: cksum mismatch 0x%02x\n", 268 (int)cksum); 269 #endif 270 } 271 else if ((eepromrev & 0xF) < 1) { 272 /* 3C509B is adapter revision level 1. */ 273 #if 0 274 printf("ep_isa_probe: revision level 0\n"); 275 #endif 276 } 277 else if (eeprom_cap != 0x2083) { 278 #if 0 279 printf("ep_isa_probe: capabilities word mismatch0x%03x\n", 280 (int)epreadeeprom(iot, ioh, EEPROM_CAP)); 281 #endif 282 } 283 else 284 /* 285 * we have a 3c509B with PnP capabilities. 286 * Test partly documented bits which toggle when 287 * in PnP mode. 288 */ 289 if ((eeprom_hi & 0x8) != 0 || ((eeprom_hi & 0xc) == 0 && 290 (eeprom_addr_cfg & 0x80) != 0)) { 291 printf("3COM 3C509B Ethernet card in PnP mode\n"); 292 continue; 293 } 294 } 295 296 /* 297 * XXX: this should probably not be done here 298 * because it enables the drq/irq lines from 299 * the board. Perhaps it should be done after 300 * we have checked for irq/drq collisions? 301 * 302 * According to the 3COM docs, this does not enable 303 * the irq lines. -chb 304 */ 305 bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); 306 307 epaddcard(bus, iobase, irq, model); 308 } 309 /* XXX should we sort by ethernet address? */ 310 311 bus_space_unmap(iot, ioh, 1); 312 313 bus_probed: 314 315 if (ia->ia_nio < 1) 316 return (0); 317 if (ia->ia_nirq < 1) 318 return (0); 319 320 for (i = 0; i < nepcards; i++) { 321 if (epcards[i].bus != bus) 322 continue; 323 if (epcards[i].available == 0) 324 continue; 325 326 if (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT && 327 ia->ia_io[0].ir_addr != epcards[i].iobase) 328 continue; 329 330 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 331 ia->ia_irq[0].ir_irq != epcards[i].irq) 332 continue; 333 334 goto good; 335 } 336 return 0; 337 338 good: 339 epcards[i].available = 0; 340 341 ia->ia_nio = 1; 342 ia->ia_io[0].ir_addr = epcards[i].iobase; 343 ia->ia_io[0].ir_size = 0x10; 344 345 ia->ia_nirq = 1; 346 ia->ia_irq[0].ir_irq = epcards[i].irq; 347 348 ia->ia_niomem = 0; 349 ia->ia_ndrq = 0; 350 351 ia->ia_aux = (void *)epcards[i].model; 352 return 1; 353 } 354 355 void 356 ep_isa_attach(device_t parent, device_t self, void *aux) 357 { 358 struct ep_softc *sc = device_private(self); 359 struct isa_attach_args *ia = aux; 360 bus_space_tag_t iot = ia->ia_iot; 361 bus_space_handle_t ioh; 362 int chipset; 363 364 /* Map i/o space. */ 365 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x10, 0, &ioh)) { 366 printf(": can't map i/o space\n"); 367 return; 368 } 369 370 sc->sc_dev = self; 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 Thu Sep 25 16:09:42 GMT 2025