1 /* $NetBSD: if_ep_isa.c,v 1.47 2019/12/27 04:50:41 msaitoh 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 1.47 2019/12/27 04:50:41 msaitoh 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(int bus, int iobase, int irq, int model) 131 { 132 133 if (nepcards >= MAXEPCARDS) 134 return; 135 epcards[nepcards].bus = bus; 136 epcards[nepcards].iobase = iobase; 137 epcards[nepcards].irq = (irq == 2) ? 9 : irq; 138 epcards[nepcards].model = model; 139 epcards[nepcards].available = 1; 140 nepcards++; 141 } 142 143 /* 144 * 3c509 cards on the ISA bus are probed in ethernet address order. 145 * The probe sequence requires careful orchestration, and we'd like 146 * to allow the irq and base address to be wildcarded. So, we 147 * probe all the cards the first time epprobe() is called. On subsequent 148 * calls we look for matching cards. 149 */ 150 int 151 ep_isa_probe(device_t parent, cfdata_t match, void *aux) 152 { 153 struct isa_attach_args *ia = aux; 154 bus_space_tag_t iot = ia->ia_iot; 155 bus_space_handle_t ioh; 156 int slot, iobase, irq, i; 157 u_int16_t vendor, model, eeprom_addr_cfg; 158 struct ep_isa_done_probe *er; 159 int bus = device_unit(parent); 160 161 if (ISA_DIRECT_CONFIG(ia)) 162 return (0); 163 164 if (ep_isa_probes_initialized == 0) { 165 LIST_INIT(&ep_isa_all_probes); 166 ep_isa_probes_initialized = 1; 167 } 168 169 /* 170 * Probe this bus if we haven't done so already. 171 */ 172 for (er = ep_isa_all_probes.lh_first; er != NULL; 173 er = er->er_link.le_next) 174 if (er->er_bus == device_unit(parent)) 175 goto bus_probed; 176 177 /* 178 * Mark this bus so we don't probe it again. 179 */ 180 er = malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_WAITOK); 181 er->er_bus = bus; 182 LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link); 183 184 /* 185 * Map the Etherlink ID port for the probe sequence. 186 */ 187 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 188 printf("ep_isa_probe: can't map Etherlink ID port\n"); 189 return 0; 190 } 191 192 for (slot = 0; slot < MAXEPCARDS; slot++) { 193 elink_reset(iot, ioh, device_unit(parent)); 194 elink_idseq(iot, ioh, ELINK_509_POLY); 195 196 /* Untag all the adapters so they will talk to us. */ 197 if (slot == 0) 198 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0); 199 200 vendor = bswap16(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); 201 if (vendor != MFG_ID) 202 continue; 203 204 model = bswap16(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); 205 /* 206 * XXX: Add a new product id to check for other cards 207 * (3c515?) and fix the check in ep_isa_attach. 208 */ 209 if ((model & 0xfff0) != PROD_ID_3C509) { 210 #ifndef trusted 211 printf( 212 "ep_isa_probe: ignoring model %04x\n", model); 213 #endif 214 continue; 215 } 216 217 eeprom_addr_cfg = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); 218 iobase = (eeprom_addr_cfg & 0x1f) * 0x10 + 0x200; 219 220 irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); 221 irq >>= 12; 222 223 /* XXX Should ignore card if non-ISA(EISA) io address? -chb */ 224 225 /* 226 * Don't attach a 3c509 in PnP mode. 227 * PnP mode was added with the 3C509B. 228 * Check some EEPROM registers to make sure this is really 229 * a 3C509B and test whether it is in PnP mode. 230 */ 231 if ((model & 0xfff0) == PROD_ID_3C509) { 232 u_int16_t cksum, eepromrev, eeprom_cap, eeprom_hi; 233 234 235 /* 236 * Fetch all the info we need to ascertain whether 237 * the card is PnP capable and in PnP mode. 238 * Skip over PnP cards. 239 */ 240 241 /* secondary configurable data checksum */ 242 cksum = epreadeeprom(iot, ioh, EEPROM_CHECKSUM_EL3) 243 & 0xFF; 244 for (i = EEPROM_CONFIG_HIGH; 245 i < EEPROM_CHECKSUM_EL3; i++) { 246 cksum ^= epreadeeprom(iot, ioh, i); 247 } 248 cksum = (cksum & 0xFF) ^ ((cksum >> 8) & 0xFF); 249 250 eepromrev = epreadeeprom(iot, ioh, EEPROM_SSI); 251 eeprom_hi = epreadeeprom(iot, ioh, EEPROM_CONFIG_HIGH); 252 eeprom_cap = epreadeeprom(iot, ioh, EEPROM_CAP); 253 254 /* 255 * Stop card responding to contention in future. 256 * (NB: stops rsponse to all reads from ID port.) 257 */ 258 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); 259 260 if (cksum != 0) { 261 #if 0 262 printf("ep_isa_probe: cksum mismatch 0x%02x\n", 263 (int)cksum); 264 #endif 265 } 266 else if ((eepromrev & 0xF) < 1) { 267 /* 3C509B is adapter revision level 1. */ 268 #if 0 269 printf("ep_isa_probe: revision level 0\n"); 270 #endif 271 } 272 else if (eeprom_cap != 0x2083) { 273 #if 0 274 printf("ep_isa_probe: capabilities word mismatch0x%03x\n", 275 (int)epreadeeprom(iot, ioh, EEPROM_CAP)); 276 #endif 277 } 278 else 279 /* 280 * we have a 3c509B with PnP capabilities. 281 * Test partly documented bits which toggle when 282 * in PnP mode. 283 */ 284 if ((eeprom_hi & 0x8) != 0 || ((eeprom_hi & 0xc) == 0 && 285 (eeprom_addr_cfg & 0x80) != 0)) { 286 printf("3COM 3C509B Ethernet card in PnP mode\n"); 287 continue; 288 } 289 } 290 291 /* 292 * XXX: this should probably not be done here 293 * because it enables the drq/irq lines from 294 * the board. Perhaps it should be done after 295 * we have checked for irq/drq collisions? 296 * 297 * According to the 3COM docs, this does not enable 298 * the irq lines. -chb 299 */ 300 bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); 301 302 epaddcard(bus, iobase, irq, model); 303 } 304 /* XXX should we sort by ethernet address? */ 305 306 bus_space_unmap(iot, ioh, 1); 307 308 bus_probed: 309 310 if (ia->ia_nio < 1) 311 return (0); 312 if (ia->ia_nirq < 1) 313 return (0); 314 315 for (i = 0; i < nepcards; i++) { 316 if (epcards[i].bus != bus) 317 continue; 318 if (epcards[i].available == 0) 319 continue; 320 321 if (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT && 322 ia->ia_io[0].ir_addr != epcards[i].iobase) 323 continue; 324 325 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 326 ia->ia_irq[0].ir_irq != epcards[i].irq) 327 continue; 328 329 goto good; 330 } 331 return 0; 332 333 good: 334 epcards[i].available = 0; 335 336 ia->ia_nio = 1; 337 ia->ia_io[0].ir_addr = epcards[i].iobase; 338 ia->ia_io[0].ir_size = 0x10; 339 340 ia->ia_nirq = 1; 341 ia->ia_irq[0].ir_irq = epcards[i].irq; 342 343 ia->ia_niomem = 0; 344 ia->ia_ndrq = 0; 345 346 ia->ia_aux = (void *)epcards[i].model; 347 return 1; 348 } 349 350 void 351 ep_isa_attach(device_t parent, device_t self, void *aux) 352 { 353 struct ep_softc *sc = device_private(self); 354 struct isa_attach_args *ia = aux; 355 bus_space_tag_t iot = ia->ia_iot; 356 bus_space_handle_t ioh; 357 int chipset; 358 359 /* Map i/o space. */ 360 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x10, 0, &ioh)) { 361 aprint_error(": can't map i/o space\n"); 362 return; 363 } 364 365 sc->sc_dev = self; 366 sc->sc_iot = iot; 367 sc->sc_ioh = ioh; 368 sc->bustype = ELINK_BUS_ISA; 369 370 sc->enable = NULL; 371 sc->disable = NULL; 372 sc->enabled = 1; 373 374 chipset = (int)(long)ia->ia_aux; 375 if ((chipset & 0xfff0) == PROD_ID_3C509) { 376 aprint_normal(": 3Com 3C509 Ethernet\n"); 377 epconfig(sc, ELINK_CHIPSET_3C509, NULL); 378 } else { 379 /* 380 * XXX: Maybe a 3c515, but the check in ep_isa_probe looks 381 * at the moment only for a 3c509. 382 */ 383 aprint_error(": unknown 3Com Ethernet card: %04x\n", chipset); 384 return; 385 } 386 387 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 388 IST_EDGE, IPL_NET, epintr, sc); 389 } 390
Indexes created Sat Sep 20 22:09:52 GMT 2025