elink3.c revision 1.73
1 /* $NetBSD: elink3.c,v 1.73 2000/02/02 17:09:46 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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) 1996, 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 "opt_inet.h" 72 #include "opt_ns.h" 73 #include "bpfilter.h" 74 #include "rnd.h" 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/kernel.h> 79 #include <sys/mbuf.h> 80 #include <sys/socket.h> 81 #include <sys/ioctl.h> 82 #include <sys/errno.h> 83 #include <sys/syslog.h> 84 #include <sys/select.h> 85 #include <sys/device.h> 86 #if NRND > 0 87 #include <sys/rnd.h> 88 #endif 89 90 #include <net/if.h> 91 #include <net/if_dl.h> 92 #include <net/if_ether.h> 93 #include <net/if_media.h> 94 95 #ifdef INET 96 #include <netinet/in.h> 97 #include <netinet/in_systm.h> 98 #include <netinet/in_var.h> 99 #include <netinet/ip.h> 100 #include <netinet/if_inarp.h> 101 #endif 102 103 #ifdef NS 104 #include <netns/ns.h> 105 #include <netns/ns_if.h> 106 #endif 107 108 #if NBPFILTER > 0 109 #include <net/bpf.h> 110 #include <net/bpfdesc.h> 111 #endif 112 113 #include <machine/cpu.h> 114 #include <machine/bus.h> 115 #include <machine/intr.h> 116 117 #include <dev/mii/mii.h> 118 #include <dev/mii/miivar.h> 119 #include <dev/mii/mii_bitbang.h> 120 121 #include <dev/ic/elink3var.h> 122 #include <dev/ic/elink3reg.h> 123 124 #ifdef DEBUG 125 int epdebug = 0; 126 #endif 127 128 /* 129 * XXX endian workaround for big-endian CPUs with pcmcia: 130 * if stream methods for bus_space_multi are not provided, define them 131 * using non-stream bus_space_{read,write}_multi_. 132 * Assumes host CPU is same endian-ness as bus. 133 */ 134 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 135 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 136 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 137 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 138 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 139 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 140 141 /* 142 * Structure to map media-present bits in boards to ifmedia codes and 143 * printable media names. Used for table-driven ifmedia initialization. 144 */ 145 struct ep_media { 146 int epm_mpbit; /* media present bit */ 147 const char *epm_name; /* name of medium */ 148 int epm_ifmedia; /* ifmedia word for medium */ 149 int epm_epmedia; /* ELINKMEDIA_* constant */ 150 }; 151 152 /* 153 * Media table for the Demon/Vortex/Boomerang chipsets. 154 * 155 * Note that MII on the Demon and Vortex (3c59x) indicates an external 156 * MII connector (for connecting an external PHY) ... I think. Treat 157 * it as `manual' on these chips. 158 * 159 * Any Boomerang (3c90x) chips with MII really do have an internal 160 * MII and real PHYs attached; no `native' media. 161 */ 162 struct ep_media ep_vortex_media[] = { 163 { ELINK_PCI_10BASE_T, "10baseT", IFM_ETHER|IFM_10_T, 164 ELINKMEDIA_10BASE_T }, 165 { ELINK_PCI_10BASE_T, "10baseT-FDX", IFM_ETHER|IFM_10_T|IFM_FDX, 166 ELINKMEDIA_10BASE_T }, 167 { ELINK_PCI_AUI, "10base5", IFM_ETHER|IFM_10_5, 168 ELINKMEDIA_AUI }, 169 { ELINK_PCI_BNC, "10base2", IFM_ETHER|IFM_10_2, 170 ELINKMEDIA_10BASE_2 }, 171 { ELINK_PCI_100BASE_TX, "100baseTX", IFM_ETHER|IFM_100_TX, 172 ELINKMEDIA_100BASE_TX }, 173 { ELINK_PCI_100BASE_TX, "100baseTX-FDX",IFM_ETHER|IFM_100_TX|IFM_FDX, 174 ELINKMEDIA_100BASE_TX }, 175 { ELINK_PCI_100BASE_FX, "100baseFX", IFM_ETHER|IFM_100_FX, 176 ELINKMEDIA_100BASE_FX }, 177 { ELINK_PCI_100BASE_MII,"manual", IFM_ETHER|IFM_MANUAL, 178 ELINKMEDIA_MII }, 179 { ELINK_PCI_100BASE_T4, "100baseT4", IFM_ETHER|IFM_100_T4, 180 ELINKMEDIA_100BASE_T4 }, 181 { 0, NULL, 0, 182 0 }, 183 }; 184 185 /* 186 * Media table for the older 3Com Etherlink III chipset, used 187 * in the 3c509, 3c579, and 3c589. 188 */ 189 struct ep_media ep_509_media[] = { 190 { ELINK_W0_CC_UTP, "10baseT", IFM_ETHER|IFM_10_T, 191 ELINKMEDIA_10BASE_T }, 192 { ELINK_W0_CC_AUI, "10base5", IFM_ETHER|IFM_10_5, 193 ELINKMEDIA_AUI }, 194 { ELINK_W0_CC_BNC, "10base2", IFM_ETHER|IFM_10_2, 195 ELINKMEDIA_10BASE_2 }, 196 { 0, NULL, 0, 197 0 }, 198 }; 199 200 void ep_internalconfig __P((struct ep_softc *sc)); 201 void ep_vortex_probemedia __P((struct ep_softc *sc)); 202 void ep_509_probemedia __P((struct ep_softc *sc)); 203 204 static void eptxstat __P((struct ep_softc *)); 205 static int epstatus __P((struct ep_softc *)); 206 void epinit __P((struct ep_softc *)); 207 int epioctl __P((struct ifnet *, u_long, caddr_t)); 208 void epstart __P((struct ifnet *)); 209 void epwatchdog __P((struct ifnet *)); 210 void epreset __P((struct ep_softc *)); 211 static void epshutdown __P((void *)); 212 void epread __P((struct ep_softc *)); 213 struct mbuf *epget __P((struct ep_softc *, int)); 214 void epmbuffill __P((void *)); 215 void epmbufempty __P((struct ep_softc *)); 216 void epsetfilter __P((struct ep_softc *)); 217 void ep_roadrunner_mii_enable __P((struct ep_softc *)); 218 void epsetmedia __P((struct ep_softc *)); 219 220 /* ifmedia callbacks */ 221 int ep_media_change __P((struct ifnet *ifp)); 222 void ep_media_status __P((struct ifnet *ifp, struct ifmediareq *req)); 223 224 /* MII callbacks */ 225 int ep_mii_readreg __P((struct device *, int, int)); 226 void ep_mii_writereg __P((struct device *, int, int, int)); 227 void ep_statchg __P((struct device *)); 228 229 void ep_tick __P((void *)); 230 231 static int epbusyeeprom __P((struct ep_softc *)); 232 u_int16_t ep_read_eeprom __P((struct ep_softc *, u_int16_t)); 233 static inline void ep_reset_cmd __P((struct ep_softc *sc, 234 u_int cmd, u_int arg)); 235 static inline void ep_finish_reset __P((bus_space_tag_t, bus_space_handle_t)); 236 static inline void ep_discard_rxtop __P((bus_space_tag_t, bus_space_handle_t)); 237 static __inline int ep_w1_reg __P((struct ep_softc *, int)); 238 239 /* 240 * MII bit-bang glue. 241 */ 242 u_int32_t ep_mii_bitbang_read __P((struct device *)); 243 void ep_mii_bitbang_write __P((struct device *, u_int32_t)); 244 245 const struct mii_bitbang_ops ep_mii_bitbang_ops = { 246 ep_mii_bitbang_read, 247 ep_mii_bitbang_write, 248 { 249 PHYSMGMT_DATA, /* MII_BIT_MDO */ 250 PHYSMGMT_DATA, /* MII_BIT_MDI */ 251 PHYSMGMT_CLK, /* MII_BIT_MDC */ 252 PHYSMGMT_DIR, /* MII_BIT_DIR_HOST_PHY */ 253 0, /* MII_BIT_DIR_PHY_HOST */ 254 } 255 }; 256 257 /* 258 * Some chips (3c515 [Corkscrew] and 3c574 [RoadRunner]) have 259 * Window 1 registers offset! 260 */ 261 static __inline int 262 ep_w1_reg(sc, reg) 263 struct ep_softc *sc; 264 int reg; 265 { 266 267 switch (sc->ep_chipset) { 268 case ELINK_CHIPSET_CORKSCREW: 269 return (reg + 0x10); 270 271 case ELINK_CHIPSET_ROADRUNNER: 272 switch (reg) { 273 case ELINK_W1_FREE_TX: 274 case ELINK_W1_RUNNER_RDCTL: 275 case ELINK_W1_RUNNER_WRCTL: 276 return (reg); 277 } 278 return (reg + 0x10); 279 } 280 281 return (reg); 282 } 283 284 /* 285 * Wait for any pending reset to complete. 286 * On newer hardware we could poll SC_COMMAND_IN_PROGRESS, 287 * but older hardware doesn't implement it and we must delay. 288 */ 289 static inline void 290 ep_finish_reset(iot, ioh) 291 bus_space_tag_t iot; 292 bus_space_handle_t ioh; 293 { 294 int i; 295 296 for (i = 0; i < 10000; i++) { 297 if ((bus_space_read_2(iot, ioh, ELINK_STATUS) & 298 S_COMMAND_IN_PROGRESS) == 0) 299 break; 300 DELAY(10); 301 } 302 } 303 304 /* 305 * Issue a (reset) command, and be sure it has completed. 306 * Used for global reset, TX_RESET, RX_RESET. 307 */ 308 static inline void 309 ep_reset_cmd(sc, cmd, arg) 310 struct ep_softc *sc; 311 u_int cmd, arg; 312 { 313 register bus_space_tag_t iot = sc->sc_iot; 314 register bus_space_handle_t ioh = sc->sc_ioh; 315 316 bus_space_write_2(iot, ioh, cmd, arg); 317 ep_finish_reset(iot, ioh); 318 } 319 320 321 static inline void 322 ep_discard_rxtop(iot, ioh) 323 register bus_space_tag_t iot; 324 register bus_space_handle_t ioh; 325 { 326 int i; 327 328 bus_space_write_2(iot, ioh, ELINK_COMMAND, RX_DISCARD_TOP_PACK); 329 330 /* 331 * Spin for about 1 msec, to avoid forcing a DELAY() between 332 * every received packet (adding latency and limiting pkt-recv rate). 333 * On PCI, at 4 30-nsec PCI bus cycles for a read, 8000 iterations 334 * is about right. 335 */ 336 for (i = 0; i < 8000; i++) { 337 if ((bus_space_read_2(iot, ioh, ELINK_STATUS) & 338 S_COMMAND_IN_PROGRESS) == 0) 339 return; 340 } 341 342 /* Didn't complete in a hurry. Do DELAY()s. */ 343 ep_finish_reset(iot, ioh); 344 } 345 346 /* 347 * Back-end attach and configure. 348 */ 349 void 350 epconfig(sc, chipset, enaddr) 351 struct ep_softc *sc; 352 u_short chipset; 353 u_int8_t *enaddr; 354 { 355 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 356 bus_space_tag_t iot = sc->sc_iot; 357 bus_space_handle_t ioh = sc->sc_ioh; 358 u_int16_t i; 359 u_int8_t myla[6]; 360 361 sc->ep_chipset = chipset; 362 363 /* 364 * We could have been groveling around in other register 365 * windows in the front-end; make sure we're in window 0 366 * to read the EEPROM. 367 */ 368 GO_WINDOW(0); 369 370 if (enaddr == NULL) { 371 /* 372 * Read the station address from the eeprom. 373 */ 374 for (i = 0; i < 3; i++) { 375 u_int16_t x = ep_read_eeprom(sc, i); 376 myla[(i << 1)] = x >> 8; 377 myla[(i << 1) + 1] = x; 378 } 379 enaddr = myla; 380 } 381 382 /* 383 * Vortex-based (3c59x pci,eisa) and Boomerang (3c900) cards 384 * allow FDDI-sized (4500) byte packets. Commands only take an 385 * 11-bit parameter, and 11 bits isn't enough to hold a full-size 386 * packet length. 387 * Commands to these cards implicitly upshift a packet size 388 * or threshold by 2 bits. 389 * To detect cards with large-packet support, we probe by setting 390 * the transmit threshold register, then change windows and 391 * read back the threshold register directly, and see if the 392 * threshold value was shifted or not. 393 */ 394 bus_space_write_2(iot, ioh, ELINK_COMMAND, 395 SET_TX_AVAIL_THRESH | ELINK_LARGEWIN_PROBE); 396 GO_WINDOW(5); 397 i = bus_space_read_2(iot, ioh, ELINK_W5_TX_AVAIL_THRESH); 398 GO_WINDOW(1); 399 switch (i) { 400 case ELINK_LARGEWIN_PROBE: 401 case (ELINK_LARGEWIN_PROBE & ELINK_LARGEWIN_MASK): 402 sc->ep_pktlenshift = 0; 403 break; 404 405 case (ELINK_LARGEWIN_PROBE << 2): 406 sc->ep_pktlenshift = 2; 407 break; 408 409 default: 410 printf("%s: wrote 0x%x to TX_AVAIL_THRESH, read back 0x%x. " 411 "Interface disabled\n", 412 sc->sc_dev.dv_xname, ELINK_LARGEWIN_PROBE, (int) i); 413 return; 414 } 415 416 /* 417 * Ensure Tx-available interrupts are enabled for 418 * start the interface. 419 * XXX should be in epinit()? 420 */ 421 bus_space_write_2(iot, ioh, ELINK_COMMAND, 422 SET_TX_AVAIL_THRESH | (1600 >> sc->ep_pktlenshift)); 423 424 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 425 ifp->if_softc = sc; 426 ifp->if_start = epstart; 427 ifp->if_ioctl = epioctl; 428 ifp->if_watchdog = epwatchdog; 429 ifp->if_flags = 430 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 431 432 if_attach(ifp); 433 ether_ifattach(ifp, enaddr); 434 435 /* 436 * Finish configuration: 437 * determine chipset if the front-end couldn't do so, 438 * show board details, set media. 439 */ 440 441 /* 442 * Print RAM size. We also print the Ethernet address in here. 443 * It's extracted from the ifp, so we have to make sure it's 444 * been attached first. 445 */ 446 ep_internalconfig(sc); 447 GO_WINDOW(0); 448 449 /* 450 * Display some additional information, if pertinent. 451 */ 452 if (sc->ep_flags & ELINK_FLAGS_USEFIFOBUFFER) 453 printf("%s: RoadRunner FIFO buffer enabled\n", 454 sc->sc_dev.dv_xname); 455 456 /* 457 * Initialize our media structures and MII info. We'll 458 * probe the MII if we discover that we have one. 459 */ 460 sc->sc_mii.mii_ifp = ifp; 461 sc->sc_mii.mii_readreg = ep_mii_readreg; 462 sc->sc_mii.mii_writereg = ep_mii_writereg; 463 sc->sc_mii.mii_statchg = ep_statchg; 464 ifmedia_init(&sc->sc_mii.mii_media, 0, ep_media_change, 465 ep_media_status); 466 467 /* 468 * Now, determine which media we have. 469 */ 470 switch (sc->ep_chipset) { 471 case ELINK_CHIPSET_ROADRUNNER: 472 if (sc->ep_flags & ELINK_FLAGS_MII) { 473 ep_roadrunner_mii_enable(sc); 474 GO_WINDOW(0); 475 } 476 /* FALLTHROUGH */ 477 478 case ELINK_CHIPSET_BOOMERANG: 479 /* 480 * If the device has MII, probe it. We won't be using 481 * any `native' media in this case, only PHYs. If 482 * we don't, just treat the Boomerang like the Vortex. 483 */ 484 if (sc->ep_flags & ELINK_FLAGS_MII) { 485 mii_attach(&sc->sc_dev, &sc->sc_mii, 0xffffffff, 486 MII_PHY_ANY, MII_OFFSET_ANY, 0); 487 if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) { 488 ifmedia_add(&sc->sc_mii.mii_media, 489 IFM_ETHER|IFM_NONE, 0, NULL); 490 ifmedia_set(&sc->sc_mii.mii_media, 491 IFM_ETHER|IFM_NONE); 492 } else { 493 ifmedia_set(&sc->sc_mii.mii_media, 494 IFM_ETHER|IFM_AUTO); 495 } 496 break; 497 } 498 /* FALLTHROUGH */ 499 500 case ELINK_CHIPSET_VORTEX: 501 ep_vortex_probemedia(sc); 502 break; 503 504 default: 505 ep_509_probemedia(sc); 506 break; 507 } 508 509 GO_WINDOW(1); /* Window 1 is operating window */ 510 511 #if NBPFILTER > 0 512 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); 513 #endif 514 515 #if NRND > 0 516 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 517 RND_TYPE_NET, 0); 518 #endif 519 520 sc->tx_start_thresh = 20; /* probably a good starting point. */ 521 522 /* Establish callback to reset card when we reboot. */ 523 sc->sd_hook = shutdownhook_establish(epshutdown, sc); 524 525 ep_reset_cmd(sc, ELINK_COMMAND, RX_RESET); 526 ep_reset_cmd(sc, ELINK_COMMAND, TX_RESET); 527 } 528 529 530 /* 531 * Show interface-model-independent info from window 3 532 * internal-configuration register. 533 */ 534 void 535 ep_internalconfig(sc) 536 struct ep_softc *sc; 537 { 538 bus_space_tag_t iot = sc->sc_iot; 539 bus_space_handle_t ioh = sc->sc_ioh; 540 541 u_int config0; 542 u_int config1; 543 544 int ram_size, ram_width, ram_speed, rom_size, ram_split; 545 /* 546 * NVRAM buffer Rx:Tx config names for busmastering cards 547 * (Demon, Vortex, and later). 548 */ 549 const char *onboard_ram_config[] = { 550 "5:3", "3:1", "1:1", "3:5" }; 551 552 GO_WINDOW(3); 553 config0 = (u_int)bus_space_read_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG); 554 config1 = (u_int)bus_space_read_2(iot, ioh, 555 ELINK_W3_INTERNAL_CONFIG + 2); 556 GO_WINDOW(0); 557 558 ram_size = (config0 & CONFIG_RAMSIZE) >> CONFIG_RAMSIZE_SHIFT; 559 ram_width = (config0 & CONFIG_RAMWIDTH) >> CONFIG_RAMWIDTH_SHIFT; 560 ram_speed = (config0 & CONFIG_RAMSPEED) >> CONFIG_RAMSPEED_SHIFT; 561 rom_size = (config0 & CONFIG_ROMSIZE) >> CONFIG_ROMSIZE_SHIFT; 562 563 ram_split = (config1 & CONFIG_RAMSPLIT) >> CONFIG_RAMSPLIT_SHIFT; 564 565 printf("%s: address %s, %dKB %s-wide FIFO, %s Rx:Tx split\n", 566 sc->sc_dev.dv_xname, 567 ether_sprintf(LLADDR(sc->sc_ethercom.ec_if.if_sadl)), 568 8 << ram_size, 569 (ram_width) ? "word" : "byte", 570 onboard_ram_config[ram_split]); 571 } 572 573 574 /* 575 * Find supported media on 3c509-generation hardware that doesn't have 576 * a "reset_options" register in window 3. 577 * Use the config_cntrl register in window 0 instead. 578 * Used on original, 10Mbit ISA (3c509), 3c509B, and pre-Demon EISA cards 579 * that implement CONFIG_CTRL. We don't have a good way to set the 580 * default active mediuim; punt to ifconfig instead. 581 */ 582 void 583 ep_509_probemedia(sc) 584 struct ep_softc *sc; 585 { 586 bus_space_tag_t iot = sc->sc_iot; 587 bus_space_handle_t ioh = sc->sc_ioh; 588 struct ifmedia *ifm = &sc->sc_mii.mii_media; 589 u_int16_t ep_w0_config, port; 590 struct ep_media *epm; 591 const char *sep = "", *defmedianame = NULL; 592 int defmedia = 0; 593 594 GO_WINDOW(0); 595 ep_w0_config = bus_space_read_2(iot, ioh, ELINK_W0_CONFIG_CTRL); 596 597 printf("%s: ", sc->sc_dev.dv_xname); 598 599 /* Sanity check that there are any media! */ 600 if ((ep_w0_config & ELINK_W0_CC_MEDIAMASK) == 0) { 601 printf("no media present!\n"); 602 ifmedia_add(ifm, IFM_ETHER|IFM_NONE, 0, NULL); 603 ifmedia_set(ifm, IFM_ETHER|IFM_NONE); 604 return; 605 } 606 607 /* 608 * Get the default media from the EEPROM. 609 */ 610 port = ep_read_eeprom(sc, EEPROM_ADDR_CFG) >> 14; 611 612 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 613 614 for (epm = ep_509_media; epm->epm_name != NULL; epm++) { 615 if (ep_w0_config & epm->epm_mpbit) { 616 /* 617 * This simple test works because 509 chipsets 618 * don't do full-duplex. 619 */ 620 if (epm->epm_epmedia == port || defmedia == 0) { 621 defmedia = epm->epm_ifmedia; 622 defmedianame = epm->epm_name; 623 } 624 ifmedia_add(ifm, epm->epm_ifmedia, epm->epm_epmedia, 625 NULL); 626 PRINT(epm->epm_name); 627 } 628 } 629 630 #undef PRINT 631 632 #ifdef DIAGNOSTIC 633 if (defmedia == 0) 634 panic("ep_509_probemedia: impossible"); 635 #endif 636 637 printf(" (default %s)\n", defmedianame); 638 ifmedia_set(ifm, defmedia); 639 } 640 641 /* 642 * Find media present on large-packet-capable elink3 devices. 643 * Show onboard configuration of large-packet-capable elink3 devices 644 * (Demon, Vortex, Boomerang), which do not implement CONFIG_CTRL in window 0. 645 * Use media and card-version info in window 3 instead. 646 */ 647 void 648 ep_vortex_probemedia(sc) 649 struct ep_softc *sc; 650 { 651 bus_space_tag_t iot = sc->sc_iot; 652 bus_space_handle_t ioh = sc->sc_ioh; 653 struct ifmedia *ifm = &sc->sc_mii.mii_media; 654 struct ep_media *epm; 655 u_int config1; 656 int reset_options; 657 int default_media; /* 3-bit encoding of default (EEPROM) media */ 658 int defmedia = 0; 659 const char *sep = "", *defmedianame = NULL; 660 661 GO_WINDOW(3); 662 config1 = (u_int)bus_space_read_2(iot, ioh, 663 ELINK_W3_INTERNAL_CONFIG + 2); 664 reset_options = (int)bus_space_read_1(iot, ioh, ELINK_W3_RESET_OPTIONS); 665 GO_WINDOW(0); 666 667 default_media = (config1 & CONFIG_MEDIAMASK) >> CONFIG_MEDIAMASK_SHIFT; 668 669 printf("%s: ", sc->sc_dev.dv_xname); 670 671 /* Sanity check that there are any media! */ 672 if ((reset_options & ELINK_PCI_MEDIAMASK) == 0) { 673 printf("no media present!\n"); 674 ifmedia_add(ifm, IFM_ETHER|IFM_NONE, 0, NULL); 675 ifmedia_set(ifm, IFM_ETHER|IFM_NONE); 676 return; 677 } 678 679 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 680 681 for (epm = ep_vortex_media; epm->epm_name != NULL; epm++) { 682 if (reset_options & epm->epm_mpbit) { 683 /* 684 * Default media is a little more complicated 685 * on the Vortex. We support full-duplex which 686 * uses the same reset options bit. 687 * 688 * XXX Check EEPROM for default to FDX? 689 */ 690 if (epm->epm_epmedia == default_media) { 691 if ((epm->epm_ifmedia & IFM_FDX) == 0) { 692 defmedia = epm->epm_ifmedia; 693 defmedianame = epm->epm_name; 694 } 695 } else if (defmedia == 0) { 696 defmedia = epm->epm_ifmedia; 697 defmedianame = epm->epm_name; 698 } 699 ifmedia_add(ifm, epm->epm_ifmedia, epm->epm_epmedia, 700 NULL); 701 PRINT(epm->epm_name); 702 } 703 } 704 705 #undef PRINT 706 707 #ifdef DIAGNOSTIC 708 if (defmedia == 0) 709 panic("ep_vortex_probemedia: impossible"); 710 #endif 711 712 printf(" (default %s)\n", defmedianame); 713 ifmedia_set(ifm, defmedia); 714 } 715 716 /* 717 * One second timer, used to tick the MII. 718 */ 719 void 720 ep_tick(arg) 721 void *arg; 722 { 723 struct ep_softc *sc = arg; 724 int s; 725 726 #ifdef DIAGNOSTIC 727 if ((sc->ep_flags & ELINK_FLAGS_MII) == 0) 728 panic("ep_tick"); 729 #endif 730 731 s = splnet(); 732 mii_tick(&sc->sc_mii); 733 splx(s); 734 735 timeout(ep_tick, sc, hz); 736 } 737 738 /* 739 * Bring device up. 740 * 741 * The order in here seems important. Otherwise we may not receive 742 * interrupts. ?! 743 */ 744 void 745 epinit(sc) 746 register struct ep_softc *sc; 747 { 748 register struct ifnet *ifp = &sc->sc_ethercom.ec_if; 749 bus_space_tag_t iot = sc->sc_iot; 750 bus_space_handle_t ioh = sc->sc_ioh; 751 int i; 752 753 /* Make sure any pending reset has completed before touching board. */ 754 ep_finish_reset(iot, ioh); 755 756 /* 757 * Cance any pending I/O. 758 */ 759 epstop(sc); 760 761 if (sc->bustype != ELINK_BUS_PCI) { 762 GO_WINDOW(0); 763 bus_space_write_2(iot, ioh, ELINK_W0_CONFIG_CTRL, 0); 764 bus_space_write_2(iot, ioh, ELINK_W0_CONFIG_CTRL, 765 ENABLE_DRQ_IRQ); 766 } 767 768 if (sc->bustype == ELINK_BUS_PCMCIA) { 769 bus_space_write_2(iot, ioh, ELINK_W0_RESOURCE_CFG, 0x3f00); 770 } 771 772 GO_WINDOW(2); 773 for (i = 0; i < 6; i++) /* Reload the ether_addr. */ 774 bus_space_write_1(iot, ioh, ELINK_W2_ADDR_0 + i, 775 LLADDR(ifp->if_sadl)[i]); 776 777 /* 778 * Reset the station-address receive filter. 779 * A bug workaround for busmastering (Vortex, Demon) cards. 780 */ 781 for (i = 0; i < 6; i++) 782 bus_space_write_1(iot, ioh, ELINK_W2_RECVMASK_0 + i, 0); 783 784 ep_reset_cmd(sc, ELINK_COMMAND, RX_RESET); 785 ep_reset_cmd(sc, ELINK_COMMAND, TX_RESET); 786 787 GO_WINDOW(1); /* Window 1 is operating window */ 788 for (i = 0; i < 31; i++) 789 bus_space_read_1(iot, ioh, ep_w1_reg(sc, ELINK_W1_TX_STATUS)); 790 791 /* Set threshhold for for Tx-space avaiable interrupt. */ 792 bus_space_write_2(iot, ioh, ELINK_COMMAND, 793 SET_TX_AVAIL_THRESH | (1600 >> sc->ep_pktlenshift)); 794 795 if (sc->ep_chipset == ELINK_CHIPSET_ROADRUNNER) { 796 /* 797 * Enable options in the PCMCIA LAN COR register, via 798 * RoadRunner Window 1. 799 * 800 * XXX MAGIC CONSTANTS! 801 */ 802 u_int16_t cor; 803 804 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, (1 << 11)); 805 806 cor = bus_space_read_2(iot, ioh, 0) & ~0x30; 807 if (sc->ep_flags & ELINK_FLAGS_USESHAREDMEM) 808 cor |= 0x10; 809 if (sc->ep_flags & ELINK_FLAGS_FORCENOWAIT) 810 cor |= 0x20; 811 bus_space_write_2(iot, ioh, 0, cor); 812 813 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_WRCTL, 0); 814 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, 0); 815 816 if (sc->ep_flags & ELINK_FLAGS_MII) { 817 ep_roadrunner_mii_enable(sc); 818 GO_WINDOW(1); 819 } 820 } 821 822 /* Enable interrupts. */ 823 bus_space_write_2(iot, ioh, ELINK_COMMAND, 824 SET_RD_0_MASK | S_CARD_FAILURE | S_RX_COMPLETE | S_TX_COMPLETE | 825 S_TX_AVAIL); 826 bus_space_write_2(iot, ioh, ELINK_COMMAND, 827 SET_INTR_MASK | S_CARD_FAILURE | S_RX_COMPLETE | S_TX_COMPLETE | 828 S_TX_AVAIL); 829 830 /* 831 * Attempt to get rid of any stray interrupts that occured during 832 * configuration. On the i386 this isn't possible because one may 833 * already be queued. However, a single stray interrupt is 834 * unimportant. 835 */ 836 bus_space_write_2(iot, ioh, ELINK_COMMAND, ACK_INTR | 0xff); 837 838 epsetfilter(sc); 839 epsetmedia(sc); 840 841 bus_space_write_2(iot, ioh, ELINK_COMMAND, RX_ENABLE); 842 bus_space_write_2(iot, ioh, ELINK_COMMAND, TX_ENABLE); 843 844 epmbuffill(sc); 845 846 /* Interface is now `running', with no output active. */ 847 ifp->if_flags |= IFF_RUNNING; 848 ifp->if_flags &= ~IFF_OACTIVE; 849 850 if (sc->ep_flags & ELINK_FLAGS_MII) { 851 /* Start the one second clock. */ 852 timeout(ep_tick, sc, hz); 853 } 854 855 /* Attempt to start output, if any. */ 856 epstart(ifp); 857 } 858 859 860 /* 861 * Set multicast receive filter. 862 * elink3 hardware has no selective multicast filter in hardware. 863 * Enable reception of all multicasts and filter in software. 864 */ 865 void 866 epsetfilter(sc) 867 register struct ep_softc *sc; 868 { 869 register struct ifnet *ifp = &sc->sc_ethercom.ec_if; 870 871 GO_WINDOW(1); /* Window 1 is operating window */ 872 bus_space_write_2(sc->sc_iot, sc->sc_ioh, ELINK_COMMAND, 873 SET_RX_FILTER | FIL_INDIVIDUAL | FIL_BRDCST | 874 ((ifp->if_flags & IFF_MULTICAST) ? FIL_MULTICAST : 0) | 875 ((ifp->if_flags & IFF_PROMISC) ? FIL_PROMISC : 0)); 876 } 877 878 int 879 ep_media_change(ifp) 880 struct ifnet *ifp; 881 { 882 register struct ep_softc *sc = ifp->if_softc; 883 884 if (sc->enabled && (ifp->if_flags & IFF_UP) != 0) 885 epreset(sc); 886 887 return (0); 888 } 889 890 /* 891 * Reset and enable the MII on the RoadRunner. 892 */ 893 void 894 ep_roadrunner_mii_enable(sc) 895 struct ep_softc *sc; 896 { 897 bus_space_tag_t iot = sc->sc_iot; 898 bus_space_handle_t ioh = sc->sc_ioh; 899 900 GO_WINDOW(3); 901 bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS, 902 ELINK_PCI_100BASE_MII|ELINK_RUNNER_ENABLE_MII); 903 delay(1000); 904 bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS, 905 ELINK_PCI_100BASE_MII|ELINK_RUNNER_MII_RESET| 906 ELINK_RUNNER_ENABLE_MII); 907 ep_reset_cmd(sc, ELINK_COMMAND, TX_RESET); 908 ep_reset_cmd(sc, ELINK_COMMAND, RX_RESET); 909 delay(1000); 910 bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS, 911 ELINK_PCI_100BASE_MII|ELINK_RUNNER_ENABLE_MII); 912 } 913 914 /* 915 * Set the card to use the specified media. 916 */ 917 void 918 epsetmedia(sc) 919 struct ep_softc *sc; 920 { 921 bus_space_tag_t iot = sc->sc_iot; 922 bus_space_handle_t ioh = sc->sc_ioh; 923 924 /* Turn everything off. First turn off linkbeat and UTP. */ 925 GO_WINDOW(4); 926 bus_space_write_2(iot, ioh, ELINK_W4_MEDIA_TYPE, 0x0); 927 928 /* Turn off coax */ 929 bus_space_write_2(iot, ioh, ELINK_COMMAND, STOP_TRANSCEIVER); 930 delay(1000); 931 932 /* 933 * If the device has MII, select it, and then tell the 934 * PHY which media to use. 935 */ 936 if (sc->ep_flags & ELINK_FLAGS_MII) { 937 int config0, config1; 938 939 GO_WINDOW(3); 940 941 if (sc->ep_chipset == ELINK_CHIPSET_ROADRUNNER) { 942 int resopt; 943 944 resopt = bus_space_read_2(iot, ioh, 945 ELINK_W3_RESET_OPTIONS); 946 bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS, 947 resopt | ELINK_RUNNER_ENABLE_MII); 948 } 949 950 config0 = (u_int)bus_space_read_2(iot, ioh, 951 ELINK_W3_INTERNAL_CONFIG); 952 config1 = (u_int)bus_space_read_2(iot, ioh, 953 ELINK_W3_INTERNAL_CONFIG + 2); 954 955 config1 = config1 & ~CONFIG_MEDIAMASK; 956 config1 |= (ELINKMEDIA_MII << CONFIG_MEDIAMASK_SHIFT); 957 958 bus_space_write_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG, config0); 959 bus_space_write_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG + 2, 960 config1); 961 GO_WINDOW(1); /* back to operating window */ 962 963 mii_mediachg(&sc->sc_mii); 964 return; 965 } 966 967 /* 968 * Now turn on the selected media/transceiver. 969 */ 970 GO_WINDOW(4); 971 switch (IFM_SUBTYPE(sc->sc_mii.mii_media.ifm_cur->ifm_media)) { 972 case IFM_10_T: 973 bus_space_write_2(iot, ioh, ELINK_W4_MEDIA_TYPE, 974 JABBER_GUARD_ENABLE|LINKBEAT_ENABLE); 975 break; 976 977 case IFM_10_2: 978 bus_space_write_2(iot, ioh, ELINK_COMMAND, START_TRANSCEIVER); 979 DELAY(1000); /* 50ms not enmough? */ 980 break; 981 982 case IFM_100_TX: 983 case IFM_100_FX: 984 case IFM_100_T4: /* XXX check documentation */ 985 bus_space_write_2(iot, ioh, ELINK_W4_MEDIA_TYPE, 986 LINKBEAT_ENABLE); 987 DELAY(1000); /* not strictly necessary? */ 988 break; 989 990 case IFM_10_5: 991 bus_space_write_2(iot, ioh, ELINK_W4_MEDIA_TYPE, 992 SQE_ENABLE); 993 DELAY(1000); /* not strictly necessary? */ 994 break; 995 996 case IFM_MANUAL: 997 /* 998 * Nothing to do here; we are actually enabling the 999 * external PHY on the MII port. 1000 */ 1001 break; 1002 1003 case IFM_NONE: 1004 printf("%s: interface disabled\n", sc->sc_dev.dv_xname); 1005 return; 1006 1007 default: 1008 panic("epsetmedia: impossible"); 1009 } 1010 1011 /* 1012 * Tell the chip which port to use. 1013 */ 1014 switch (sc->ep_chipset) { 1015 case ELINK_CHIPSET_VORTEX: 1016 case ELINK_CHIPSET_BOOMERANG: 1017 { 1018 int mctl, config0, config1; 1019 1020 GO_WINDOW(3); 1021 config0 = (u_int)bus_space_read_2(iot, ioh, 1022 ELINK_W3_INTERNAL_CONFIG); 1023 config1 = (u_int)bus_space_read_2(iot, ioh, 1024 ELINK_W3_INTERNAL_CONFIG + 2); 1025 1026 config1 = config1 & ~CONFIG_MEDIAMASK; 1027 config1 |= (sc->sc_mii.mii_media.ifm_cur->ifm_data << 1028 CONFIG_MEDIAMASK_SHIFT); 1029 1030 bus_space_write_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG, config0); 1031 bus_space_write_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG + 2, 1032 config1); 1033 1034 mctl = bus_space_read_2(iot, ioh, ELINK_W3_MAC_CONTROL); 1035 if (sc->sc_mii.mii_media.ifm_cur->ifm_media & IFM_FDX) 1036 mctl |= MAC_CONTROL_FDX; 1037 else 1038 mctl &= ~MAC_CONTROL_FDX; 1039 bus_space_write_2(iot, ioh, ELINK_W3_MAC_CONTROL, mctl); 1040 break; 1041 } 1042 default: 1043 { 1044 int w0_addr_cfg; 1045 1046 GO_WINDOW(0); 1047 w0_addr_cfg = bus_space_read_2(iot, ioh, ELINK_W0_ADDRESS_CFG); 1048 w0_addr_cfg &= 0x3fff; 1049 bus_space_write_2(iot, ioh, ELINK_W0_ADDRESS_CFG, w0_addr_cfg | 1050 (sc->sc_mii.mii_media.ifm_cur->ifm_data << 14)); 1051 DELAY(1000); 1052 break; 1053 } 1054 } 1055 1056 GO_WINDOW(1); /* Window 1 is operating window */ 1057 } 1058 1059 /* 1060 * Get currently-selected media from card. 1061 * (if_media callback, may be called before interface is brought up). 1062 */ 1063 void 1064 ep_media_status(ifp, req) 1065 struct ifnet *ifp; 1066 struct ifmediareq *req; 1067 { 1068 register struct ep_softc *sc = ifp->if_softc; 1069 bus_space_tag_t iot = sc->sc_iot; 1070 bus_space_handle_t ioh = sc->sc_ioh; 1071 1072 if (sc->enabled == 0) { 1073 req->ifm_active = IFM_ETHER|IFM_NONE; 1074 req->ifm_status = 0; 1075 return; 1076 } 1077 1078 /* 1079 * If we have MII, go ask the PHY what's going on. 1080 */ 1081 if (sc->ep_flags & ELINK_FLAGS_MII) { 1082 mii_pollstat(&sc->sc_mii); 1083 req->ifm_active = sc->sc_mii.mii_media_active; 1084 req->ifm_status = sc->sc_mii.mii_media_status; 1085 return; 1086 } 1087 1088 /* 1089 * Ok, at this point we claim that our active media is 1090 * the currently selected media. We'll update our status 1091 * if our chipset allows us to detect link. 1092 */ 1093 req->ifm_active = sc->sc_mii.mii_media.ifm_cur->ifm_media; 1094 req->ifm_status = 0; 1095 1096 switch (sc->ep_chipset) { 1097 case ELINK_CHIPSET_VORTEX: 1098 case ELINK_CHIPSET_BOOMERANG: 1099 GO_WINDOW(4); 1100 req->ifm_status = IFM_AVALID; 1101 if (bus_space_read_2(iot, ioh, ELINK_W4_MEDIA_TYPE) & 1102 LINKBEAT_DETECT) 1103 req->ifm_status |= IFM_ACTIVE; 1104 GO_WINDOW(1); /* back to operating window */ 1105 break; 1106 } 1107 } 1108 1109 1110 1111 /* 1112 * Start outputting on the interface. 1113 * Always called as splnet(). 1114 */ 1115 void 1116 epstart(ifp) 1117 struct ifnet *ifp; 1118 { 1119 register struct ep_softc *sc = ifp->if_softc; 1120 bus_space_tag_t iot = sc->sc_iot; 1121 bus_space_handle_t ioh = sc->sc_ioh; 1122 struct mbuf *m, *m0; 1123 int sh, len, pad; 1124 bus_addr_t txreg; 1125 1126 /* Don't transmit if interface is busy or not running */ 1127 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1128 return; 1129 1130 startagain: 1131 /* Sneak a peek at the next packet */ 1132 m0 = ifp->if_snd.ifq_head; 1133 if (m0 == 0) 1134 return; 1135 1136 /* We need to use m->m_pkthdr.len, so require the header */ 1137 if ((m0->m_flags & M_PKTHDR) == 0) 1138 panic("epstart: no header mbuf"); 1139 len = m0->m_pkthdr.len; 1140 1141 pad = (4 - len) & 3; 1142 1143 /* 1144 * The 3c509 automatically pads short packets to minimum ethernet 1145 * length, but we drop packets that are too large. Perhaps we should 1146 * truncate them instead? 1147 */ 1148 if (len + pad > ETHER_MAX_LEN) { 1149 /* packet is obviously too large: toss it */ 1150 ++ifp->if_oerrors; 1151 IF_DEQUEUE(&ifp->if_snd, m0); 1152 m_freem(m0); 1153 goto readcheck; 1154 } 1155 1156 if (bus_space_read_2(iot, ioh, ep_w1_reg(sc, ELINK_W1_FREE_TX)) < 1157 len + pad + 4) { 1158 bus_space_write_2(iot, ioh, ELINK_COMMAND, 1159 SET_TX_AVAIL_THRESH | 1160 ((len + pad + 4) >> sc->ep_pktlenshift)); 1161 /* not enough room in FIFO */ 1162 ifp->if_flags |= IFF_OACTIVE; 1163 return; 1164 } else { 1165 bus_space_write_2(iot, ioh, ELINK_COMMAND, 1166 SET_TX_AVAIL_THRESH | ELINK_THRESH_DISABLE); 1167 } 1168 1169 IF_DEQUEUE(&ifp->if_snd, m0); 1170 if (m0 == 0) /* not really needed */ 1171 return; 1172 1173 bus_space_write_2(iot, ioh, ELINK_COMMAND, SET_TX_START_THRESH | 1174 ((len / 4 + sc->tx_start_thresh) /* >> sc->ep_pktlenshift*/)); 1175 1176 #if NBPFILTER > 0 1177 if (ifp->if_bpf) 1178 bpf_mtap(ifp->if_bpf, m0); 1179 #endif 1180 1181 /* 1182 * Do the output at splhigh() so that an interrupt from another device 1183 * won't cause a FIFO underrun. 1184 */ 1185 sh = splhigh(); 1186 1187 txreg = ep_w1_reg(sc, ELINK_W1_TX_PIO_WR_1); 1188 1189 if (sc->ep_flags & ELINK_FLAGS_USEFIFOBUFFER) { 1190 /* 1191 * Prime the FIFO buffer counter (number of 16-bit 1192 * words about to be written to the FIFO). 1193 * 1194 * NOTE: NO OTHER ACCESS CAN BE PERFORMED WHILE THIS 1195 * COUNTER IS NON-ZERO! 1196 */ 1197 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_WRCTL, 1198 (len + pad) >> 1); 1199 } 1200 1201 bus_space_write_2(iot, ioh, txreg, len); 1202 bus_space_write_2(iot, ioh, txreg, 0xffff); /* Second is meaningless */ 1203 if (ELINK_IS_BUS_32(sc->bustype)) { 1204 for (m = m0; m;) { 1205 if (m->m_len > 3) { 1206 /* align our reads from core */ 1207 if (mtod(m, u_long) & 3) { 1208 u_long count = 1209 4 - (mtod(m, u_long) & 3); 1210 bus_space_write_multi_1(iot, ioh, 1211 txreg, mtod(m, u_int8_t *), count); 1212 m->m_data = 1213 (void *)(mtod(m, u_long) + count); 1214 m->m_len -= count; 1215 } 1216 bus_space_write_multi_stream_4(iot, ioh, 1217 txreg, mtod(m, u_int32_t *), m->m_len >> 2); 1218 m->m_data = (void *)(mtod(m, u_long) + 1219 (u_long)(m->m_len & ~3)); 1220 m->m_len -= m->m_len & ~3; 1221 } 1222 if (m->m_len) { 1223 bus_space_write_multi_1(iot, ioh, 1224 txreg, mtod(m, u_int8_t *), m->m_len); 1225 } 1226 MFREE(m, m0); 1227 m = m0; 1228 } 1229 } else { 1230 for (m = m0; m;) { 1231 if (m->m_len > 1) { 1232 if (mtod(m, u_long) & 1) { 1233 bus_space_write_1(iot, ioh, 1234 txreg, *(mtod(m, u_int8_t *))); 1235 m->m_data = 1236 (void *)(mtod(m, u_long) + 1); 1237 m->m_len -= 1; 1238 } 1239 bus_space_write_multi_stream_2(iot, ioh, 1240 txreg, mtod(m, u_int16_t *), 1241 m->m_len >> 1); 1242 } 1243 if (m->m_len & 1) { 1244 bus_space_write_1(iot, ioh, txreg, 1245 *(mtod(m, u_int8_t *) + m->m_len - 1)); 1246 } 1247 MFREE(m, m0); 1248 m = m0; 1249 } 1250 } 1251 while (pad--) 1252 bus_space_write_1(iot, ioh, txreg, 0); 1253 1254 splx(sh); 1255 1256 ++ifp->if_opackets; 1257 1258 readcheck: 1259 if ((bus_space_read_2(iot, ioh, ep_w1_reg(sc, ELINK_W1_RX_STATUS)) & 1260 ERR_INCOMPLETE) == 0) { 1261 /* We received a complete packet. */ 1262 u_int16_t status = bus_space_read_2(iot, ioh, ELINK_STATUS); 1263 1264 if ((status & S_INTR_LATCH) == 0) { 1265 /* 1266 * No interrupt, read the packet and continue 1267 * Is this supposed to happen? Is my motherboard 1268 * completely busted? 1269 */ 1270 epread(sc); 1271 } else { 1272 /* Got an interrupt, return so that it gets serviced. */ 1273 return; 1274 } 1275 } else { 1276 /* Check if we are stuck and reset [see XXX comment] */ 1277 if (epstatus(sc)) { 1278 if (ifp->if_flags & IFF_DEBUG) 1279 printf("%s: adapter reset\n", 1280 sc->sc_dev.dv_xname); 1281 epreset(sc); 1282 } 1283 } 1284 1285 goto startagain; 1286 } 1287 1288 1289 /* 1290 * XXX: The 3c509 card can get in a mode where both the fifo status bit 1291 * FIFOS_RX_OVERRUN and the status bit ERR_INCOMPLETE are set 1292 * We detect this situation and we reset the adapter. 1293 * It happens at times when there is a lot of broadcast traffic 1294 * on the cable (once in a blue moon). 1295 */ 1296 static int 1297 epstatus(sc) 1298 register struct ep_softc *sc; 1299 { 1300 bus_space_tag_t iot = sc->sc_iot; 1301 bus_space_handle_t ioh = sc->sc_ioh; 1302 u_int16_t fifost; 1303 1304 /* 1305 * Check the FIFO status and act accordingly 1306 */ 1307 GO_WINDOW(4); 1308 fifost = bus_space_read_2(iot, ioh, ELINK_W4_FIFO_DIAG); 1309 GO_WINDOW(1); 1310 1311 if (fifost & FIFOS_RX_UNDERRUN) { 1312 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1313 printf("%s: RX underrun\n", sc->sc_dev.dv_xname); 1314 epreset(sc); 1315 return 0; 1316 } 1317 1318 if (fifost & FIFOS_RX_STATUS_OVERRUN) { 1319 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1320 printf("%s: RX Status overrun\n", sc->sc_dev.dv_xname); 1321 return 1; 1322 } 1323 1324 if (fifost & FIFOS_RX_OVERRUN) { 1325 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1326 printf("%s: RX overrun\n", sc->sc_dev.dv_xname); 1327 return 1; 1328 } 1329 1330 if (fifost & FIFOS_TX_OVERRUN) { 1331 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1332 printf("%s: TX overrun\n", sc->sc_dev.dv_xname); 1333 epreset(sc); 1334 return 0; 1335 } 1336 1337 return 0; 1338 } 1339 1340 1341 static void 1342 eptxstat(sc) 1343 register struct ep_softc *sc; 1344 { 1345 bus_space_tag_t iot = sc->sc_iot; 1346 bus_space_handle_t ioh = sc->sc_ioh; 1347 int i; 1348 1349 /* 1350 * We need to read+write TX_STATUS until we get a 0 status 1351 * in order to turn off the interrupt flag. 1352 */ 1353 while ((i = bus_space_read_1(iot, ioh, 1354 ep_w1_reg(sc, ELINK_W1_TX_STATUS))) & TXS_COMPLETE) { 1355 bus_space_write_1(iot, ioh, ep_w1_reg(sc, ELINK_W1_TX_STATUS), 1356 0x0); 1357 1358 if (i & TXS_JABBER) { 1359 ++sc->sc_ethercom.ec_if.if_oerrors; 1360 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1361 printf("%s: jabber (%x)\n", 1362 sc->sc_dev.dv_xname, i); 1363 epreset(sc); 1364 } else if (i & TXS_UNDERRUN) { 1365 ++sc->sc_ethercom.ec_if.if_oerrors; 1366 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1367 printf("%s: fifo underrun (%x) @%d\n", 1368 sc->sc_dev.dv_xname, i, 1369 sc->tx_start_thresh); 1370 if (sc->tx_succ_ok < 100) 1371 sc->tx_start_thresh = min(ETHER_MAX_LEN, 1372 sc->tx_start_thresh + 20); 1373 sc->tx_succ_ok = 0; 1374 epreset(sc); 1375 } else if (i & TXS_MAX_COLLISION) { 1376 ++sc->sc_ethercom.ec_if.if_collisions; 1377 bus_space_write_2(iot, ioh, ELINK_COMMAND, TX_ENABLE); 1378 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 1379 } else 1380 sc->tx_succ_ok = (sc->tx_succ_ok+1) & 127; 1381 } 1382 } 1383 1384 int 1385 epintr(arg) 1386 void *arg; 1387 { 1388 register struct ep_softc *sc = arg; 1389 bus_space_tag_t iot = sc->sc_iot; 1390 bus_space_handle_t ioh = sc->sc_ioh; 1391 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1392 u_int16_t status; 1393 int ret = 0; 1394 int addrandom = 0; 1395 1396 if (sc->enabled == 0 || 1397 (sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1398 return (0); 1399 1400 for (;;) { 1401 bus_space_write_2(iot, ioh, ELINK_COMMAND, C_INTR_LATCH); 1402 1403 status = bus_space_read_2(iot, ioh, ELINK_STATUS); 1404 1405 if ((status & (S_TX_COMPLETE | S_TX_AVAIL | 1406 S_RX_COMPLETE | S_CARD_FAILURE)) == 0) { 1407 if ((status & S_INTR_LATCH) == 0) { 1408 #if 0 1409 printf("%s: intr latch cleared\n", 1410 sc->sc_dev.dv_xname); 1411 #endif 1412 break; 1413 } 1414 } 1415 1416 ret = 1; 1417 1418 /* 1419 * Acknowledge any interrupts. It's important that we do this 1420 * first, since there would otherwise be a race condition. 1421 * Due to the i386 interrupt queueing, we may get spurious 1422 * interrupts occasionally. 1423 */ 1424 bus_space_write_2(iot, ioh, ELINK_COMMAND, ACK_INTR | 1425 (status & (C_INTR_LATCH | 1426 C_CARD_FAILURE | 1427 C_TX_COMPLETE | 1428 C_TX_AVAIL | 1429 C_RX_COMPLETE | 1430 C_RX_EARLY | 1431 C_INT_RQD | 1432 C_UPD_STATS))); 1433 1434 #if 0 1435 status = bus_space_read_2(iot, ioh, ELINK_STATUS); 1436 1437 printf("%s: intr%s%s%s%s\n", sc->sc_dev.dv_xname, 1438 (status & S_RX_COMPLETE)?" RX_COMPLETE":"", 1439 (status & S_TX_COMPLETE)?" TX_COMPLETE":"", 1440 (status & S_TX_AVAIL)?" TX_AVAIL":"", 1441 (status & S_CARD_FAILURE)?" CARD_FAILURE":""); 1442 #endif 1443 1444 if (status & S_RX_COMPLETE) { 1445 epread(sc); 1446 addrandom = 1; 1447 } 1448 if (status & S_TX_AVAIL) { 1449 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 1450 epstart(&sc->sc_ethercom.ec_if); 1451 addrandom = 1; 1452 } 1453 if (status & S_CARD_FAILURE) { 1454 printf("%s: adapter failure (%x)\n", 1455 sc->sc_dev.dv_xname, status); 1456 #if 1 1457 epinit(sc); 1458 #else 1459 epreset(sc); 1460 #endif 1461 return (1); 1462 } 1463 if (status & S_TX_COMPLETE) { 1464 eptxstat(sc); 1465 epstart(ifp); 1466 addrandom = 1; 1467 } 1468 1469 #if NRND > 0 1470 if (status) 1471 rnd_add_uint32(&sc->rnd_source, status); 1472 #endif 1473 } 1474 1475 /* no more interrupts */ 1476 return (ret); 1477 } 1478 1479 void 1480 epread(sc) 1481 register struct ep_softc *sc; 1482 { 1483 bus_space_tag_t iot = sc->sc_iot; 1484 bus_space_handle_t ioh = sc->sc_ioh; 1485 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1486 struct mbuf *m; 1487 struct ether_header *eh; 1488 int len; 1489 1490 len = bus_space_read_2(iot, ioh, ep_w1_reg(sc, ELINK_W1_RX_STATUS)); 1491 1492 again: 1493 if (ifp->if_flags & IFF_DEBUG) { 1494 int err = len & ERR_MASK; 1495 char *s = NULL; 1496 1497 if (len & ERR_INCOMPLETE) 1498 s = "incomplete packet"; 1499 else if (err == ERR_OVERRUN) 1500 s = "packet overrun"; 1501 else if (err == ERR_RUNT) 1502 s = "runt packet"; 1503 else if (err == ERR_ALIGNMENT) 1504 s = "bad alignment"; 1505 else if (err == ERR_CRC) 1506 s = "bad crc"; 1507 else if (err == ERR_OVERSIZE) 1508 s = "oversized packet"; 1509 else if (err == ERR_DRIBBLE) 1510 s = "dribble bits"; 1511 1512 if (s) 1513 printf("%s: %s\n", sc->sc_dev.dv_xname, s); 1514 } 1515 1516 if (len & ERR_INCOMPLETE) 1517 return; 1518 1519 if (len & ERR_RX) { 1520 ++ifp->if_ierrors; 1521 goto abort; 1522 } 1523 1524 len &= RX_BYTES_MASK; /* Lower 11 bits = RX bytes. */ 1525 1526 /* Pull packet off interface. */ 1527 m = epget(sc, len); 1528 if (m == 0) { 1529 ifp->if_ierrors++; 1530 goto abort; 1531 } 1532 1533 ++ifp->if_ipackets; 1534 1535 /* We assume the header fit entirely in one mbuf. */ 1536 eh = mtod(m, struct ether_header *); 1537 1538 #if NBPFILTER > 0 1539 /* 1540 * Check if there's a BPF listener on this interface. 1541 * If so, hand off the raw packet to BPF. 1542 */ 1543 if (ifp->if_bpf) { 1544 bpf_mtap(ifp->if_bpf, m); 1545 1546 /* 1547 * Note that the interface cannot be in promiscuous mode if 1548 * there are no BPF listeners. And if we are in promiscuous 1549 * mode, we have to check if this packet is really ours. 1550 */ 1551 if ((ifp->if_flags & IFF_PROMISC) && 1552 (eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */ 1553 bcmp(eh->ether_dhost, LLADDR(sc->sc_ethercom.ec_if.if_sadl), 1554 sizeof(eh->ether_dhost)) != 0) { 1555 m_freem(m); 1556 return; 1557 } 1558 } 1559 #endif 1560 (*ifp->if_input)(ifp, m); 1561 1562 /* 1563 * In periods of high traffic we can actually receive enough 1564 * packets so that the fifo overrun bit will be set at this point, 1565 * even though we just read a packet. In this case we 1566 * are not going to receive any more interrupts. We check for 1567 * this condition and read again until the fifo is not full. 1568 * We could simplify this test by not using epstatus(), but 1569 * rechecking the RX_STATUS register directly. This test could 1570 * result in unnecessary looping in cases where there is a new 1571 * packet but the fifo is not full, but it will not fix the 1572 * stuck behavior. 1573 * 1574 * Even with this improvement, we still get packet overrun errors 1575 * which are hurting performance. Maybe when I get some more time 1576 * I'll modify epread() so that it can handle RX_EARLY interrupts. 1577 */ 1578 if (epstatus(sc)) { 1579 len = bus_space_read_2(iot, ioh, 1580 ep_w1_reg(sc, ELINK_W1_RX_STATUS)); 1581 /* Check if we are stuck and reset [see XXX comment] */ 1582 if (len & ERR_INCOMPLETE) { 1583 if (ifp->if_flags & IFF_DEBUG) 1584 printf("%s: adapter reset\n", 1585 sc->sc_dev.dv_xname); 1586 epreset(sc); 1587 return; 1588 } 1589 goto again; 1590 } 1591 1592 return; 1593 1594 abort: 1595 ep_discard_rxtop(iot, ioh); 1596 1597 } 1598 1599 struct mbuf * 1600 epget(sc, totlen) 1601 struct ep_softc *sc; 1602 int totlen; 1603 { 1604 bus_space_tag_t iot = sc->sc_iot; 1605 bus_space_handle_t ioh = sc->sc_ioh; 1606 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1607 struct mbuf *top, **mp, *m, *rv = NULL; 1608 bus_addr_t rxreg; 1609 int len, remaining; 1610 int sh; 1611 1612 m = sc->mb[sc->next_mb]; 1613 sc->mb[sc->next_mb] = 0; 1614 if (m == 0) { 1615 MGETHDR(m, M_DONTWAIT, MT_DATA); 1616 if (m == 0) 1617 return 0; 1618 } else { 1619 /* If the queue is no longer full, refill. */ 1620 if (sc->last_mb == sc->next_mb) 1621 timeout(epmbuffill, sc, 1); 1622 /* Convert one of our saved mbuf's. */ 1623 sc->next_mb = (sc->next_mb + 1) % MAX_MBS; 1624 m->m_data = m->m_pktdat; 1625 m->m_flags = M_PKTHDR; 1626 } 1627 m->m_pkthdr.rcvif = ifp; 1628 m->m_pkthdr.len = totlen; 1629 len = MHLEN; 1630 top = 0; 1631 mp = ⊤ 1632 1633 /* 1634 * We read the packet at splhigh() so that an interrupt from another 1635 * device doesn't cause the card's buffer to overflow while we're 1636 * reading it. We may still lose packets at other times. 1637 */ 1638 sh = splhigh(); 1639 1640 rxreg = ep_w1_reg(sc, ELINK_W1_RX_PIO_RD_1); 1641 1642 if (sc->ep_flags & ELINK_FLAGS_USEFIFOBUFFER) { 1643 /* 1644 * Prime the FIFO buffer counter (number of 16-bit 1645 * words about to be read from the FIFO). 1646 * 1647 * NOTE: NO OTHER ACCESS CAN BE PERFORMED WHILE THIS 1648 * COUNTER IS NON-ZERO! 1649 */ 1650 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, totlen >> 1); 1651 } 1652 1653 while (totlen > 0) { 1654 if (top) { 1655 m = sc->mb[sc->next_mb]; 1656 sc->mb[sc->next_mb] = 0; 1657 if (m == 0) { 1658 MGET(m, M_DONTWAIT, MT_DATA); 1659 if (m == 0) { 1660 m_freem(top); 1661 goto out; 1662 } 1663 } else { 1664 sc->next_mb = (sc->next_mb + 1) % MAX_MBS; 1665 } 1666 len = MLEN; 1667 } 1668 if (totlen >= MINCLSIZE) { 1669 MCLGET(m, M_DONTWAIT); 1670 if ((m->m_flags & M_EXT) == 0) { 1671 m_free(m); 1672 m_freem(top); 1673 goto out; 1674 } 1675 len = MCLBYTES; 1676 } 1677 if (top == 0) { 1678 /* align the struct ip header */ 1679 caddr_t newdata = (caddr_t) 1680 ALIGN(m->m_data + sizeof(struct ether_header)) 1681 - sizeof(struct ether_header); 1682 len -= newdata - m->m_data; 1683 m->m_data = newdata; 1684 } 1685 remaining = len = min(totlen, len); 1686 if (ELINK_IS_BUS_32(sc->bustype)) { 1687 u_long offset = mtod(m, u_long); 1688 /* 1689 * Read bytes up to the point where we are aligned. 1690 * (We can align to 4 bytes, rather than ALIGNBYTES, 1691 * here because we're later reading 4-byte chunks.) 1692 */ 1693 if ((remaining > 3) && (offset & 3)) { 1694 int count = (4 - (offset & 3)); 1695 bus_space_read_multi_1(iot, ioh, 1696 rxreg, (u_int8_t *) offset, count); 1697 offset += count; 1698 remaining -= count; 1699 } 1700 if (remaining > 3) { 1701 bus_space_read_multi_stream_4(iot, ioh, 1702 rxreg, (u_int32_t *) offset, 1703 remaining >> 2); 1704 offset += remaining & ~3; 1705 remaining &= 3; 1706 } 1707 if (remaining) { 1708 bus_space_read_multi_1(iot, ioh, 1709 rxreg, (u_int8_t *) offset, remaining); 1710 } 1711 } else { 1712 u_long offset = mtod(m, u_long); 1713 if ((remaining > 1) && (offset & 1)) { 1714 bus_space_read_multi_1(iot, ioh, 1715 rxreg, (u_int8_t *) offset, 1); 1716 remaining -= 1; 1717 offset += 1; 1718 } 1719 if (remaining > 1) { 1720 bus_space_read_multi_stream_2(iot, ioh, 1721 rxreg, (u_int16_t *) offset, 1722 remaining >> 1); 1723 offset += remaining & ~1; 1724 } 1725 if (remaining & 1) { 1726 bus_space_read_multi_1(iot, ioh, 1727 rxreg, (u_int8_t *) offset, remaining & 1); 1728 } 1729 } 1730 m->m_len = len; 1731 totlen -= len; 1732 *mp = m; 1733 mp = &m->m_next; 1734 } 1735 1736 rv = top; 1737 1738 ep_discard_rxtop(iot, ioh); 1739 1740 out: 1741 if (sc->ep_flags & ELINK_FLAGS_USEFIFOBUFFER) 1742 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, 0); 1743 splx(sh); 1744 1745 return rv; 1746 } 1747 1748 int 1749 epioctl(ifp, cmd, data) 1750 register struct ifnet *ifp; 1751 u_long cmd; 1752 caddr_t data; 1753 { 1754 struct ep_softc *sc = ifp->if_softc; 1755 struct ifaddr *ifa = (struct ifaddr *)data; 1756 struct ifreq *ifr = (struct ifreq *)data; 1757 int s, error = 0; 1758 1759 s = splnet(); 1760 1761 switch (cmd) { 1762 1763 case SIOCSIFADDR: 1764 if ((error = epenable(sc)) != 0) 1765 break; 1766 /* epinit is called just below */ 1767 ifp->if_flags |= IFF_UP; 1768 switch (ifa->ifa_addr->sa_family) { 1769 #ifdef INET 1770 case AF_INET: 1771 epinit(sc); 1772 arp_ifinit(&sc->sc_ethercom.ec_if, ifa); 1773 break; 1774 #endif 1775 #ifdef NS 1776 case AF_NS: 1777 { 1778 register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 1779 1780 if (ns_nullhost(*ina)) 1781 ina->x_host = *(union ns_host *) 1782 LLADDR(ifp->if_sadl); 1783 else 1784 bcopy(ina->x_host.c_host, 1785 LLADDR(ifp->if_sadl), 1786 ifp->if_addrlen); 1787 /* Set new address. */ 1788 epinit(sc); 1789 break; 1790 } 1791 #endif 1792 default: 1793 epinit(sc); 1794 break; 1795 } 1796 break; 1797 1798 case SIOCSIFMEDIA: 1799 case SIOCGIFMEDIA: 1800 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd); 1801 break; 1802 1803 case SIOCSIFFLAGS: 1804 if ((ifp->if_flags & IFF_UP) == 0 && 1805 (ifp->if_flags & IFF_RUNNING) != 0) { 1806 /* 1807 * If interface is marked down and it is running, then 1808 * stop it. 1809 */ 1810 epstop(sc); 1811 ifp->if_flags &= ~IFF_RUNNING; 1812 epdisable(sc); 1813 } else if ((ifp->if_flags & IFF_UP) != 0 && 1814 (ifp->if_flags & IFF_RUNNING) == 0) { 1815 /* 1816 * If interface is marked up and it is stopped, then 1817 * start it. 1818 */ 1819 if ((error = epenable(sc)) != 0) 1820 break; 1821 epinit(sc); 1822 } else if ((ifp->if_flags & IFF_UP) != 0) { 1823 /* 1824 * deal with flags changes: 1825 * IFF_MULTICAST, IFF_PROMISC. 1826 */ 1827 epsetfilter(sc); 1828 } 1829 break; 1830 1831 case SIOCADDMULTI: 1832 case SIOCDELMULTI: 1833 if (sc->enabled == 0) { 1834 error = EIO; 1835 break; 1836 } 1837 1838 error = (cmd == SIOCADDMULTI) ? 1839 ether_addmulti(ifr, &sc->sc_ethercom) : 1840 ether_delmulti(ifr, &sc->sc_ethercom); 1841 1842 if (error == ENETRESET) { 1843 /* 1844 * Multicast list has changed; set the hardware filter 1845 * accordingly. 1846 */ 1847 epreset(sc); 1848 error = 0; 1849 } 1850 break; 1851 1852 default: 1853 error = EINVAL; 1854 break; 1855 } 1856 1857 splx(s); 1858 return (error); 1859 } 1860 1861 void 1862 epreset(sc) 1863 struct ep_softc *sc; 1864 { 1865 int s; 1866 1867 s = splnet(); 1868 epinit(sc); 1869 splx(s); 1870 } 1871 1872 void 1873 epwatchdog(ifp) 1874 struct ifnet *ifp; 1875 { 1876 struct ep_softc *sc = ifp->if_softc; 1877 1878 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 1879 ++sc->sc_ethercom.ec_if.if_oerrors; 1880 1881 epreset(sc); 1882 } 1883 1884 void 1885 epstop(sc) 1886 register struct ep_softc *sc; 1887 { 1888 bus_space_tag_t iot = sc->sc_iot; 1889 bus_space_handle_t ioh = sc->sc_ioh; 1890 1891 if (sc->ep_flags & ELINK_FLAGS_MII) { 1892 /* Stop the one second clock. */ 1893 untimeout(ep_tick, sc); 1894 1895 /* Down the MII. */ 1896 mii_down(&sc->sc_mii); 1897 } 1898 1899 if (sc->ep_chipset == ELINK_CHIPSET_ROADRUNNER) { 1900 /* 1901 * Clear the FIFO buffer count, thus halting 1902 * any currently-running transactions. 1903 */ 1904 GO_WINDOW(1); /* sanity */ 1905 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_WRCTL, 0); 1906 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, 0); 1907 } 1908 1909 bus_space_write_2(iot, ioh, ELINK_COMMAND, RX_DISABLE); 1910 ep_discard_rxtop(iot, ioh); 1911 1912 bus_space_write_2(iot, ioh, ELINK_COMMAND, TX_DISABLE); 1913 bus_space_write_2(iot, ioh, ELINK_COMMAND, STOP_TRANSCEIVER); 1914 1915 ep_reset_cmd(sc, ELINK_COMMAND, RX_RESET); 1916 ep_reset_cmd(sc, ELINK_COMMAND, TX_RESET); 1917 1918 bus_space_write_2(iot, ioh, ELINK_COMMAND, C_INTR_LATCH); 1919 bus_space_write_2(iot, ioh, ELINK_COMMAND, SET_RD_0_MASK); 1920 bus_space_write_2(iot, ioh, ELINK_COMMAND, SET_INTR_MASK); 1921 bus_space_write_2(iot, ioh, ELINK_COMMAND, SET_RX_FILTER); 1922 1923 epmbufempty(sc); 1924 } 1925 1926 1927 /* 1928 * Before reboots, reset card completely. 1929 */ 1930 static void 1931 epshutdown(arg) 1932 void *arg; 1933 { 1934 register struct ep_softc *sc = arg; 1935 int s = splnet(); 1936 1937 if (sc->enabled) { 1938 epstop(sc); 1939 ep_reset_cmd(sc, ELINK_COMMAND, GLOBAL_RESET); 1940 sc->enabled = 0; 1941 } 1942 splx(s); 1943 } 1944 1945 /* 1946 * We get eeprom data from the id_port given an offset into the 1947 * eeprom. Basically; after the ID_sequence is sent to all of 1948 * the cards; they enter the ID_CMD state where they will accept 1949 * command requests. 0x80-0xbf loads the eeprom data. We then 1950 * read the port 16 times and with every read; the cards check 1951 * for contention (ie: if one card writes a 0 bit and another 1952 * writes a 1 bit then the host sees a 0. At the end of the cycle; 1953 * each card compares the data on the bus; if there is a difference 1954 * then that card goes into ID_WAIT state again). In the meantime; 1955 * one bit of data is returned in the AX register which is conveniently 1956 * returned to us by bus_space_read_1(). Hence; we read 16 times getting one 1957 * bit of data with each read. 1958 * 1959 * NOTE: the caller must provide an i/o handle for ELINK_ID_PORT! 1960 */ 1961 u_int16_t 1962 epreadeeprom(iot, ioh, offset) 1963 bus_space_tag_t iot; 1964 bus_space_handle_t ioh; 1965 int offset; 1966 { 1967 u_int16_t data = 0; 1968 int i; 1969 1970 bus_space_write_1(iot, ioh, 0, 0x80 + offset); 1971 delay(1000); 1972 for (i = 0; i < 16; i++) 1973 data = (data << 1) | (bus_space_read_2(iot, ioh, 0) & 1); 1974 return (data); 1975 } 1976 1977 static int 1978 epbusyeeprom(sc) 1979 struct ep_softc *sc; 1980 { 1981 bus_space_tag_t iot = sc->sc_iot; 1982 bus_space_handle_t ioh = sc->sc_ioh; 1983 int i = 100, j; 1984 1985 if (sc->bustype == ELINK_BUS_PCMCIA) { 1986 delay(1000); 1987 return 0; 1988 } 1989 1990 j = 0; /* bad GCC flow analysis */ 1991 while (i--) { 1992 j = bus_space_read_2(iot, ioh, ELINK_W0_EEPROM_COMMAND); 1993 if (j & EEPROM_BUSY) 1994 delay(100); 1995 else 1996 break; 1997 } 1998 if (!i) { 1999 printf("\n%s: eeprom failed to come ready\n", 2000 sc->sc_dev.dv_xname); 2001 return (1); 2002 } 2003 if (j & EEPROM_TST_MODE) { 2004 /* XXX PnP mode? */ 2005 printf("\n%s: erase pencil mark!\n", sc->sc_dev.dv_xname); 2006 return (1); 2007 } 2008 return (0); 2009 } 2010 2011 u_int16_t 2012 ep_read_eeprom(sc, offset) 2013 struct ep_softc *sc; 2014 u_int16_t offset; 2015 { 2016 u_int16_t readcmd; 2017 2018 /* 2019 * RoadRunner has a larger EEPROM, so a different read command 2020 * is required. 2021 */ 2022 if (sc->ep_chipset == ELINK_CHIPSET_ROADRUNNER) 2023 readcmd = READ_EEPROM_RR; 2024 else 2025 readcmd = READ_EEPROM; 2026 2027 if (epbusyeeprom(sc)) 2028 return (0); /* XXX why is eeprom busy? */ 2029 bus_space_write_2(sc->sc_iot, sc->sc_ioh, ELINK_W0_EEPROM_COMMAND, 2030 readcmd | offset); 2031 if (epbusyeeprom(sc)) 2032 return (0); /* XXX why is eeprom busy? */ 2033 return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, ELINK_W0_EEPROM_DATA)); 2034 } 2035 2036 void 2037 epmbuffill(v) 2038 void *v; 2039 { 2040 struct ep_softc *sc = v; 2041 struct mbuf *m; 2042 int s, i; 2043 2044 s = splnet(); 2045 i = sc->last_mb; 2046 do { 2047 if (sc->mb[i] == 0) { 2048 MGET(m, M_DONTWAIT, MT_DATA); 2049 if (m == 0) 2050 break; 2051 sc->mb[i] = m; 2052 } 2053 i = (i + 1) % MAX_MBS; 2054 } while (i != sc->next_mb); 2055 sc->last_mb = i; 2056 /* If the queue was not filled, try again. */ 2057 if (sc->last_mb != sc->next_mb) 2058 timeout(epmbuffill, sc, 1); 2059 splx(s); 2060 } 2061 2062 void 2063 epmbufempty(sc) 2064 struct ep_softc *sc; 2065 { 2066 int s, i; 2067 2068 s = splnet(); 2069 for (i = 0; i<MAX_MBS; i++) { 2070 if (sc->mb[i]) { 2071 m_freem(sc->mb[i]); 2072 sc->mb[i] = NULL; 2073 } 2074 } 2075 sc->last_mb = sc->next_mb = 0; 2076 untimeout(epmbuffill, sc); 2077 splx(s); 2078 } 2079 2080 int 2081 epenable(sc) 2082 struct ep_softc *sc; 2083 { 2084 2085 if (sc->enabled == 0 && sc->enable != NULL) { 2086 if ((*sc->enable)(sc) != 0) { 2087 printf("%s: device enable failed\n", 2088 sc->sc_dev.dv_xname); 2089 return (EIO); 2090 } 2091 } 2092 2093 sc->enabled = 1; 2094 return (0); 2095 } 2096 2097 void 2098 epdisable(sc) 2099 struct ep_softc *sc; 2100 { 2101 2102 if (sc->enabled != 0 && sc->disable != NULL) { 2103 (*sc->disable)(sc); 2104 sc->enabled = 0; 2105 } 2106 } 2107 2108 int 2109 ep_activate(self, act) 2110 struct device *self; 2111 enum devact act; 2112 { 2113 struct ep_softc *sc = (struct ep_softc *)self; 2114 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 2115 int error = 0, s; 2116 2117 s = splnet(); 2118 switch (act) { 2119 case DVACT_ACTIVATE: 2120 error = EOPNOTSUPP; 2121 break; 2122 2123 case DVACT_DEACTIVATE: 2124 if_deactivate(ifp); 2125 break; 2126 } 2127 splx(s); 2128 return (error); 2129 } 2130 2131 int 2132 ep_detach(self, flags) 2133 struct device *self; 2134 int flags; 2135 { 2136 struct ep_softc *sc = (struct ep_softc *)self; 2137 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 2138 2139 epdisable(sc); 2140 2141 untimeout(ep_tick, sc); 2142 untimeout(epmbuffill, sc); 2143 2144 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 2145 2146 #if NRND > 0 2147 rnd_detach_source(&sc->rnd_source); 2148 #endif 2149 #if NBPFILTER > 0 2150 bpfdetach(ifp); 2151 #endif 2152 ether_ifdetach(ifp); 2153 if_detach(ifp); 2154 2155 shutdownhook_disestablish(sc->sd_hook); 2156 2157 return (0); 2158 } 2159 2160 u_int32_t 2161 ep_mii_bitbang_read(self) 2162 struct device *self; 2163 { 2164 struct ep_softc *sc = (void *) self; 2165 2166 /* We're already in Window 4. */ 2167 return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, 2168 ELINK_W4_BOOM_PHYSMGMT)); 2169 } 2170 2171 void 2172 ep_mii_bitbang_write(self, val) 2173 struct device *self; 2174 u_int32_t val; 2175 { 2176 struct ep_softc *sc = (void *) self; 2177 2178 /* We're already in Window 4. */ 2179 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 2180 ELINK_W4_BOOM_PHYSMGMT, val); 2181 } 2182 2183 int 2184 ep_mii_readreg(self, phy, reg) 2185 struct device *self; 2186 int phy, reg; 2187 { 2188 struct ep_softc *sc = (void *) self; 2189 int val; 2190 2191 GO_WINDOW(4); 2192 2193 val = mii_bitbang_readreg(self, &ep_mii_bitbang_ops, phy, reg); 2194 2195 GO_WINDOW(1); 2196 2197 return (val); 2198 } 2199 2200 void 2201 ep_mii_writereg(self, phy, reg, val) 2202 struct device *self; 2203 int phy, reg, val; 2204 { 2205 struct ep_softc *sc = (void *) self; 2206 2207 GO_WINDOW(4); 2208 2209 mii_bitbang_writereg(self, &ep_mii_bitbang_ops, phy, reg, val); 2210 2211 GO_WINDOW(1); 2212 } 2213 2214 void 2215 ep_statchg(self) 2216 struct device *self; 2217 { 2218 struct ep_softc *sc = (struct ep_softc *)self; 2219 bus_space_tag_t iot = sc->sc_iot; 2220 bus_space_handle_t ioh = sc->sc_ioh; 2221 int mctl; 2222 2223 /* XXX Update ifp->if_baudrate */ 2224 2225 GO_WINDOW(3); 2226 mctl = bus_space_read_2(iot, ioh, ELINK_W3_MAC_CONTROL); 2227 if (sc->sc_mii.mii_media_active & IFM_FDX) 2228 mctl |= MAC_CONTROL_FDX; 2229 else 2230 mctl &= ~MAC_CONTROL_FDX; 2231 bus_space_write_2(iot, ioh, ELINK_W3_MAC_CONTROL, mctl); 2232 GO_WINDOW(1); /* back to operating window */ 2233 } 2234
Indexes created Wed Sep 24 15:09:51 GMT 2025