elink3.c revision 1.138
1 /* $NetBSD: elink3.c,v 1.138 2016/06/10 13:27:13 ozaki-r Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2001 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) 1996, 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: elink3.c,v 1.138 2016/06/10 13:27:13 ozaki-r Exp $"); 66 67 #include "opt_inet.h" 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/callout.h> 72 #include <sys/kernel.h> 73 #include <sys/mbuf.h> 74 #include <sys/socket.h> 75 #include <sys/ioctl.h> 76 #include <sys/errno.h> 77 #include <sys/syslog.h> 78 #include <sys/select.h> 79 #include <sys/device.h> 80 #include <sys/rndsource.h> 81 82 #include <net/if.h> 83 #include <net/if_dl.h> 84 #include <net/if_ether.h> 85 #include <net/if_media.h> 86 87 #include <net/bpf.h> 88 #include <net/bpfdesc.h> 89 90 #include <sys/cpu.h> 91 #include <sys/bus.h> 92 #include <sys/intr.h> 93 94 #include <dev/mii/mii.h> 95 #include <dev/mii/miivar.h> 96 #include <dev/mii/mii_bitbang.h> 97 98 #include <dev/ic/elink3var.h> 99 #include <dev/ic/elink3reg.h> 100 101 #ifdef DEBUG 102 int epdebug = 0; 103 #endif 104 105 /* 106 * XXX endian workaround for big-endian CPUs with pcmcia: 107 * if stream methods for bus_space_multi are not provided, define them 108 * using non-stream bus_space_{read,write}_multi_. 109 * Assumes host CPU is same endian-ness as bus. 110 */ 111 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 112 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 113 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 114 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 115 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 116 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 117 118 /* 119 * Structure to map media-present bits in boards to ifmedia codes and 120 * printable media names. Used for table-driven ifmedia initialization. 121 */ 122 struct ep_media { 123 int epm_mpbit; /* media present bit */ 124 const char *epm_name; /* name of medium */ 125 int epm_ifmedia; /* ifmedia word for medium */ 126 int epm_epmedia; /* ELINKMEDIA_* constant */ 127 }; 128 129 /* 130 * Media table for the Demon/Vortex/Boomerang chipsets. 131 * 132 * Note that MII on the Demon and Vortex (3c59x) indicates an external 133 * MII connector (for connecting an external PHY) ... I think. Treat 134 * it as `manual' on these chips. 135 * 136 * Any Boomerang (3c90x) chips with MII really do have an internal 137 * MII and real PHYs attached; no `native' media. 138 */ 139 const struct ep_media ep_vortex_media[] = { 140 { ELINK_PCI_10BASE_T, "10baseT", IFM_ETHER|IFM_10_T, 141 ELINKMEDIA_10BASE_T }, 142 { ELINK_PCI_10BASE_T, "10baseT-FDX", IFM_ETHER|IFM_10_T|IFM_FDX, 143 ELINKMEDIA_10BASE_T }, 144 { ELINK_PCI_AUI, "10base5", IFM_ETHER|IFM_10_5, 145 ELINKMEDIA_AUI }, 146 { ELINK_PCI_BNC, "10base2", IFM_ETHER|IFM_10_2, 147 ELINKMEDIA_10BASE_2 }, 148 { ELINK_PCI_100BASE_TX, "100baseTX", IFM_ETHER|IFM_100_TX, 149 ELINKMEDIA_100BASE_TX }, 150 { ELINK_PCI_100BASE_TX, "100baseTX-FDX",IFM_ETHER|IFM_100_TX|IFM_FDX, 151 ELINKMEDIA_100BASE_TX }, 152 { ELINK_PCI_100BASE_FX, "100baseFX", IFM_ETHER|IFM_100_FX, 153 ELINKMEDIA_100BASE_FX }, 154 { ELINK_PCI_100BASE_MII,"manual", IFM_ETHER|IFM_MANUAL, 155 ELINKMEDIA_MII }, 156 { ELINK_PCI_100BASE_T4, "100baseT4", IFM_ETHER|IFM_100_T4, 157 ELINKMEDIA_100BASE_T4 }, 158 { 0, NULL, 0, 159 0 }, 160 }; 161 162 /* 163 * Media table for the older 3Com Etherlink III chipset, used 164 * in the 3c509, 3c579, and 3c589. 165 */ 166 const struct ep_media ep_509_media[] = { 167 { ELINK_W0_CC_UTP, "10baseT", IFM_ETHER|IFM_10_T, 168 ELINKMEDIA_10BASE_T }, 169 { ELINK_W0_CC_AUI, "10base5", IFM_ETHER|IFM_10_5, 170 ELINKMEDIA_AUI }, 171 { ELINK_W0_CC_BNC, "10base2", IFM_ETHER|IFM_10_2, 172 ELINKMEDIA_10BASE_2 }, 173 { 0, NULL, 0, 174 0 }, 175 }; 176 177 void ep_internalconfig(struct ep_softc *sc); 178 void ep_vortex_probemedia(struct ep_softc *sc); 179 void ep_509_probemedia(struct ep_softc *sc); 180 181 static void eptxstat(struct ep_softc *); 182 static int epstatus(struct ep_softc *); 183 int epinit(struct ifnet *); 184 void epstop(struct ifnet *, int); 185 int epioctl(struct ifnet *, u_long, void *); 186 void epstart(struct ifnet *); 187 void epwatchdog(struct ifnet *); 188 void epreset(struct ep_softc *); 189 static bool epshutdown(device_t, int); 190 void epread(struct ep_softc *); 191 struct mbuf *epget(struct ep_softc *, int); 192 void epmbuffill(void *); 193 void epmbufempty(struct ep_softc *); 194 void epsetfilter(struct ep_softc *); 195 void ep_roadrunner_mii_enable(struct ep_softc *); 196 void epsetmedia(struct ep_softc *); 197 198 /* ifmedia callbacks */ 199 int ep_media_change(struct ifnet *ifp); 200 void ep_media_status(struct ifnet *ifp, struct ifmediareq *req); 201 202 /* MII callbacks */ 203 int ep_mii_readreg(device_t, int, int); 204 void ep_mii_writereg(device_t, int, int, int); 205 void ep_statchg(struct ifnet *); 206 207 void ep_tick(void *); 208 209 static int epbusyeeprom(struct ep_softc *); 210 u_int16_t ep_read_eeprom(struct ep_softc *, u_int16_t); 211 static inline void ep_reset_cmd(struct ep_softc *sc, u_int cmd, u_int arg); 212 static inline void ep_finish_reset(bus_space_tag_t, bus_space_handle_t); 213 static inline void ep_discard_rxtop(bus_space_tag_t, bus_space_handle_t); 214 static inline int ep_w1_reg(struct ep_softc *, int); 215 216 /* 217 * MII bit-bang glue. 218 */ 219 u_int32_t ep_mii_bitbang_read(device_t); 220 void ep_mii_bitbang_write(device_t, u_int32_t); 221 222 const struct mii_bitbang_ops ep_mii_bitbang_ops = { 223 ep_mii_bitbang_read, 224 ep_mii_bitbang_write, 225 { 226 PHYSMGMT_DATA, /* MII_BIT_MDO */ 227 PHYSMGMT_DATA, /* MII_BIT_MDI */ 228 PHYSMGMT_CLK, /* MII_BIT_MDC */ 229 PHYSMGMT_DIR, /* MII_BIT_DIR_HOST_PHY */ 230 0, /* MII_BIT_DIR_PHY_HOST */ 231 } 232 }; 233 234 /* 235 * Some chips (3c515 [Corkscrew] and 3c574 [RoadRunner]) have 236 * Window 1 registers offset! 237 */ 238 static inline int 239 ep_w1_reg(struct ep_softc *sc, int reg) 240 { 241 242 switch (sc->ep_chipset) { 243 case ELINK_CHIPSET_CORKSCREW: 244 return (reg + 0x10); 245 246 case ELINK_CHIPSET_ROADRUNNER: 247 switch (reg) { 248 case ELINK_W1_FREE_TX: 249 case ELINK_W1_RUNNER_RDCTL: 250 case ELINK_W1_RUNNER_WRCTL: 251 return (reg); 252 } 253 return (reg + 0x10); 254 } 255 256 return (reg); 257 } 258 259 /* 260 * Wait for any pending reset to complete. 261 * On newer hardware we could poll SC_COMMAND_IN_PROGRESS, 262 * but older hardware doesn't implement it and we must delay. 263 */ 264 static inline void 265 ep_finish_reset(bus_space_tag_t iot, bus_space_handle_t ioh) 266 { 267 int i; 268 269 for (i = 0; i < 10000; i++) { 270 if ((bus_space_read_2(iot, ioh, ELINK_STATUS) & 271 COMMAND_IN_PROGRESS) == 0) 272 break; 273 DELAY(10); 274 } 275 } 276 277 /* 278 * Issue a (reset) command, and be sure it has completed. 279 * Used for global reset, TX_RESET, RX_RESET. 280 */ 281 static inline void 282 ep_reset_cmd(struct ep_softc *sc, u_int cmd, u_int arg) 283 { 284 bus_space_tag_t iot = sc->sc_iot; 285 bus_space_handle_t ioh = sc->sc_ioh; 286 287 bus_space_write_2(iot, ioh, cmd, arg); 288 ep_finish_reset(iot, ioh); 289 } 290 291 292 static inline void 293 ep_discard_rxtop(bus_space_tag_t iot, bus_space_handle_t ioh) 294 { 295 int i; 296 297 bus_space_write_2(iot, ioh, ELINK_COMMAND, RX_DISCARD_TOP_PACK); 298 299 /* 300 * Spin for about 1 msec, to avoid forcing a DELAY() between 301 * every received packet (adding latency and limiting pkt-recv rate). 302 * On PCI, at 4 30-nsec PCI bus cycles for a read, 8000 iterations 303 * is about right. 304 */ 305 for (i = 0; i < 8000; i++) { 306 if ((bus_space_read_2(iot, ioh, ELINK_STATUS) & 307 COMMAND_IN_PROGRESS) == 0) 308 return; 309 } 310 311 /* Didn't complete in a hurry. Do DELAY()s. */ 312 ep_finish_reset(iot, ioh); 313 } 314 315 /* 316 * Back-end attach and configure. 317 */ 318 int 319 epconfig(struct ep_softc *sc, u_short chipset, u_int8_t *enaddr) 320 { 321 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 322 bus_space_tag_t iot = sc->sc_iot; 323 bus_space_handle_t ioh = sc->sc_ioh; 324 u_int16_t i; 325 u_int8_t myla[ETHER_ADDR_LEN]; 326 327 callout_init(&sc->sc_mii_callout, 0); 328 callout_init(&sc->sc_mbuf_callout, 0); 329 330 sc->ep_chipset = chipset; 331 332 /* 333 * We could have been groveling around in other register 334 * windows in the front-end; make sure we're in window 0 335 * to read the EEPROM. 336 */ 337 GO_WINDOW(0); 338 339 if (enaddr == NULL) { 340 /* 341 * Read the station address from the eeprom. 342 */ 343 for (i = 0; i < ETHER_ADDR_LEN / 2; i++) { 344 u_int16_t x = ep_read_eeprom(sc, i); 345 myla[(i << 1)] = x >> 8; 346 myla[(i << 1) + 1] = x; 347 } 348 enaddr = myla; 349 } 350 351 /* 352 * Vortex-based (3c59x pci,eisa) and Boomerang (3c900) cards 353 * allow FDDI-sized (4500) byte packets. Commands only take an 354 * 11-bit parameter, and 11 bits isn't enough to hold a full-size 355 * packet length. 356 * Commands to these cards implicitly upshift a packet size 357 * or threshold by 2 bits. 358 * To detect cards with large-packet support, we probe by setting 359 * the transmit threshold register, then change windows and 360 * read back the threshold register directly, and see if the 361 * threshold value was shifted or not. 362 */ 363 bus_space_write_2(iot, ioh, ELINK_COMMAND, 364 SET_TX_AVAIL_THRESH | ELINK_LARGEWIN_PROBE); 365 GO_WINDOW(5); 366 i = bus_space_read_2(iot, ioh, ELINK_W5_TX_AVAIL_THRESH); 367 GO_WINDOW(1); 368 switch (i) { 369 case ELINK_LARGEWIN_PROBE: 370 case (ELINK_LARGEWIN_PROBE & ELINK_LARGEWIN_MASK): 371 sc->ep_pktlenshift = 0; 372 break; 373 374 case (ELINK_LARGEWIN_PROBE << 2): 375 sc->ep_pktlenshift = 2; 376 break; 377 378 default: 379 aprint_error_dev(sc->sc_dev, 380 "wrote 0x%x to TX_AVAIL_THRESH, read back 0x%x. " 381 "Interface disabled\n", 382 ELINK_LARGEWIN_PROBE, (int) i); 383 return (1); 384 } 385 386 /* 387 * Ensure Tx-available interrupts are enabled for 388 * start the interface. 389 * XXX should be in epinit()? 390 */ 391 bus_space_write_2(iot, ioh, ELINK_COMMAND, 392 SET_TX_AVAIL_THRESH | (1600 >> sc->ep_pktlenshift)); 393 394 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 395 ifp->if_softc = sc; 396 ifp->if_start = epstart; 397 ifp->if_ioctl = epioctl; 398 ifp->if_watchdog = epwatchdog; 399 ifp->if_init = epinit; 400 ifp->if_stop = epstop; 401 ifp->if_flags = 402 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 403 IFQ_SET_READY(&ifp->if_snd); 404 405 if_attach(ifp); 406 ether_ifattach(ifp, enaddr); 407 408 /* 409 * Finish configuration: 410 * determine chipset if the front-end couldn't do so, 411 * show board details, set media. 412 */ 413 414 /* 415 * Print RAM size. We also print the Ethernet address in here. 416 * It's extracted from the ifp, so we have to make sure it's 417 * been attached first. 418 */ 419 ep_internalconfig(sc); 420 GO_WINDOW(0); 421 422 /* 423 * Display some additional information, if pertinent. 424 */ 425 if (sc->ep_flags & ELINK_FLAGS_USEFIFOBUFFER) 426 aprint_normal_dev(sc->sc_dev, "RoadRunner FIFO buffer enabled\n"); 427 428 /* 429 * Initialize our media structures and MII info. We'll 430 * probe the MII if we discover that we have one. 431 */ 432 sc->sc_mii.mii_ifp = ifp; 433 sc->sc_mii.mii_readreg = ep_mii_readreg; 434 sc->sc_mii.mii_writereg = ep_mii_writereg; 435 sc->sc_mii.mii_statchg = ep_statchg; 436 ifmedia_init(&sc->sc_mii.mii_media, IFM_IMASK, ep_media_change, 437 ep_media_status); 438 439 /* 440 * All CORKSCREW chips have MII. 441 */ 442 if (sc->ep_chipset == ELINK_CHIPSET_CORKSCREW) 443 sc->ep_flags |= ELINK_FLAGS_MII; 444 445 /* 446 * Now, determine which media we have. 447 */ 448 switch (sc->ep_chipset) { 449 case ELINK_CHIPSET_ROADRUNNER: 450 if (sc->ep_flags & ELINK_FLAGS_MII) { 451 ep_roadrunner_mii_enable(sc); 452 GO_WINDOW(0); 453 } 454 /* FALLTHROUGH */ 455 456 case ELINK_CHIPSET_CORKSCREW: 457 case ELINK_CHIPSET_BOOMERANG: 458 /* 459 * If the device has MII, probe it. We won't be using 460 * any `native' media in this case, only PHYs. If 461 * we don't, just treat the Boomerang like the Vortex. 462 */ 463 if (sc->ep_flags & ELINK_FLAGS_MII) { 464 mii_attach(sc->sc_dev, &sc->sc_mii, 0xffffffff, 465 MII_PHY_ANY, MII_OFFSET_ANY, 0); 466 if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) { 467 ifmedia_add(&sc->sc_mii.mii_media, 468 IFM_ETHER|IFM_NONE, 0, NULL); 469 ifmedia_set(&sc->sc_mii.mii_media, 470 IFM_ETHER|IFM_NONE); 471 } else { 472 ifmedia_set(&sc->sc_mii.mii_media, 473 IFM_ETHER|IFM_AUTO); 474 } 475 break; 476 } 477 /* FALLTHROUGH */ 478 479 case ELINK_CHIPSET_VORTEX: 480 ep_vortex_probemedia(sc); 481 break; 482 483 default: 484 ep_509_probemedia(sc); 485 break; 486 } 487 488 GO_WINDOW(1); /* Window 1 is operating window */ 489 490 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 491 RND_TYPE_NET, RND_FLAG_DEFAULT); 492 493 sc->tx_start_thresh = 20; /* probably a good starting point. */ 494 495 /* Establish callback to reset card when we reboot. */ 496 if (pmf_device_register1(sc->sc_dev, NULL, NULL, epshutdown)) 497 pmf_class_network_register(sc->sc_dev, ifp); 498 else 499 aprint_error_dev(sc->sc_dev, 500 "couldn't establish power handler\n"); 501 502 ep_reset_cmd(sc, ELINK_COMMAND, RX_RESET); 503 ep_reset_cmd(sc, ELINK_COMMAND, TX_RESET); 504 505 /* The attach is successful. */ 506 sc->sc_flags |= ELINK_FLAGS_ATTACHED; 507 return (0); 508 } 509 510 511 /* 512 * Show interface-model-independent info from window 3 513 * internal-configuration register. 514 */ 515 void 516 ep_internalconfig(struct ep_softc *sc) 517 { 518 bus_space_tag_t iot = sc->sc_iot; 519 bus_space_handle_t ioh = sc->sc_ioh; 520 521 u_int config0; 522 u_int config1; 523 524 int ram_size, ram_width, ram_split; 525 /* 526 * NVRAM buffer Rx:Tx config names for busmastering cards 527 * (Demon, Vortex, and later). 528 */ 529 const char *const onboard_ram_config[] = { 530 "5:3", "3:1", "1:1", "3:5" }; 531 532 GO_WINDOW(3); 533 config0 = (u_int)bus_space_read_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG); 534 config1 = (u_int)bus_space_read_2(iot, ioh, 535 ELINK_W3_INTERNAL_CONFIG + 2); 536 GO_WINDOW(0); 537 538 ram_size = (config0 & CONFIG_RAMSIZE) >> CONFIG_RAMSIZE_SHIFT; 539 ram_width = (config0 & CONFIG_RAMWIDTH) >> CONFIG_RAMWIDTH_SHIFT; 540 541 ram_split = (config1 & CONFIG_RAMSPLIT) >> CONFIG_RAMSPLIT_SHIFT; 542 543 aprint_normal_dev(sc->sc_dev, "address %s, %dKB %s-wide FIFO, %s Rx:Tx split\n", 544 ether_sprintf(CLLADDR(sc->sc_ethercom.ec_if.if_sadl)), 545 8 << ram_size, 546 (ram_width) ? "word" : "byte", 547 onboard_ram_config[ram_split]); 548 } 549 550 551 /* 552 * Find supported media on 3c509-generation hardware that doesn't have 553 * a "reset_options" register in window 3. 554 * Use the config_cntrl register in window 0 instead. 555 * Used on original, 10Mbit ISA (3c509), 3c509B, and pre-Demon EISA cards 556 * that implement CONFIG_CTRL. We don't have a good way to set the 557 * default active medium; punt to ifconfig instead. 558 */ 559 void 560 ep_509_probemedia(struct ep_softc *sc) 561 { 562 bus_space_tag_t iot = sc->sc_iot; 563 bus_space_handle_t ioh = sc->sc_ioh; 564 struct ifmedia *ifm = &sc->sc_mii.mii_media; 565 u_int16_t ep_w0_config, port; 566 const struct ep_media *epm; 567 const char *sep = "", *defmedianame = NULL; 568 int defmedia = 0; 569 570 GO_WINDOW(0); 571 ep_w0_config = bus_space_read_2(iot, ioh, ELINK_W0_CONFIG_CTRL); 572 573 aprint_normal_dev(sc->sc_dev, ""); 574 575 /* Sanity check that there are any media! */ 576 if ((ep_w0_config & ELINK_W0_CC_MEDIAMASK) == 0) { 577 aprint_error("no media present!\n"); 578 ifmedia_add(ifm, IFM_ETHER|IFM_NONE, 0, NULL); 579 ifmedia_set(ifm, IFM_ETHER|IFM_NONE); 580 return; 581 } 582 583 /* 584 * Get the default media from the EEPROM. 585 */ 586 port = ep_read_eeprom(sc, EEPROM_ADDR_CFG) >> 14; 587 588 #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " 589 590 for (epm = ep_509_media; epm->epm_name != NULL; epm++) { 591 if (ep_w0_config & epm->epm_mpbit) { 592 /* 593 * This simple test works because 509 chipsets 594 * don't do full-duplex. 595 */ 596 if (epm->epm_epmedia == port || defmedia == 0) { 597 defmedia = epm->epm_ifmedia; 598 defmedianame = epm->epm_name; 599 } 600 ifmedia_add(ifm, epm->epm_ifmedia, epm->epm_epmedia, 601 NULL); 602 PRINT(epm->epm_name); 603 } 604 } 605 606 #undef PRINT 607 608 #ifdef DIAGNOSTIC 609 if (defmedia == 0) 610 panic("ep_509_probemedia: impossible"); 611 #endif 612 613 aprint_normal(" (default %s)\n", defmedianame); 614 ifmedia_set(ifm, defmedia); 615 } 616 617 /* 618 * Find media present on large-packet-capable elink3 devices. 619 * Show onboard configuration of large-packet-capable elink3 devices 620 * (Demon, Vortex, Boomerang), which do not implement CONFIG_CTRL in window 0. 621 * Use media and card-version info in window 3 instead. 622 */ 623 void 624 ep_vortex_probemedia(struct ep_softc *sc) 625 { 626 bus_space_tag_t iot = sc->sc_iot; 627 bus_space_handle_t ioh = sc->sc_ioh; 628 struct ifmedia *ifm = &sc->sc_mii.mii_media; 629 const struct ep_media *epm; 630 u_int config1; 631 int reset_options; 632 int default_media; /* 3-bit encoding of default (EEPROM) media */ 633 int defmedia = 0; 634 const char *sep = "", *defmedianame = NULL; 635 636 GO_WINDOW(3); 637 config1 = (u_int)bus_space_read_2(iot, ioh, 638 ELINK_W3_INTERNAL_CONFIG + 2); 639 reset_options = (int)bus_space_read_2(iot, ioh, ELINK_W3_RESET_OPTIONS); 640 GO_WINDOW(0); 641 642 default_media = (config1 & CONFIG_MEDIAMASK) >> CONFIG_MEDIAMASK_SHIFT; 643 644 aprint_normal_dev(sc->sc_dev, ""); 645 646 /* Sanity check that there are any media! */ 647 if ((reset_options & ELINK_PCI_MEDIAMASK) == 0) { 648 aprint_error("no media present!\n"); 649 ifmedia_add(ifm, IFM_ETHER|IFM_NONE, 0, NULL); 650 ifmedia_set(ifm, IFM_ETHER|IFM_NONE); 651 return; 652 } 653 654 #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " 655 656 for (epm = ep_vortex_media; epm->epm_name != NULL; epm++) { 657 if (reset_options & epm->epm_mpbit) { 658 /* 659 * Default media is a little more complicated 660 * on the Vortex. We support full-duplex which 661 * uses the same reset options bit. 662 * 663 * XXX Check EEPROM for default to FDX? 664 */ 665 if (epm->epm_epmedia == default_media) { 666 if ((epm->epm_ifmedia & IFM_FDX) == 0) { 667 defmedia = epm->epm_ifmedia; 668 defmedianame = epm->epm_name; 669 } 670 } else if (defmedia == 0) { 671 defmedia = epm->epm_ifmedia; 672 defmedianame = epm->epm_name; 673 } 674 ifmedia_add(ifm, epm->epm_ifmedia, epm->epm_epmedia, 675 NULL); 676 PRINT(epm->epm_name); 677 } 678 } 679 680 #undef PRINT 681 682 #ifdef DIAGNOSTIC 683 if (defmedia == 0) 684 panic("ep_vortex_probemedia: impossible"); 685 #endif 686 687 aprint_normal(" (default %s)\n", defmedianame); 688 ifmedia_set(ifm, defmedia); 689 } 690 691 /* 692 * One second timer, used to tick the MII. 693 */ 694 void 695 ep_tick(void *arg) 696 { 697 struct ep_softc *sc = arg; 698 int s; 699 700 #ifdef DIAGNOSTIC 701 if ((sc->ep_flags & ELINK_FLAGS_MII) == 0) 702 panic("ep_tick"); 703 #endif 704 705 if (!device_is_active(sc->sc_dev)) 706 return; 707 708 s = splnet(); 709 mii_tick(&sc->sc_mii); 710 splx(s); 711 712 callout_reset(&sc->sc_mii_callout, hz, ep_tick, sc); 713 } 714 715 /* 716 * Bring device up. 717 * 718 * The order in here seems important. Otherwise we may not receive 719 * interrupts. ?! 720 */ 721 int 722 epinit(struct ifnet *ifp) 723 { 724 struct ep_softc *sc = ifp->if_softc; 725 bus_space_tag_t iot = sc->sc_iot; 726 bus_space_handle_t ioh = sc->sc_ioh; 727 int i, error; 728 const u_int8_t *addr; 729 730 if (!sc->enabled && (error = epenable(sc)) != 0) 731 return (error); 732 733 /* Make sure any pending reset has completed before touching board */ 734 ep_finish_reset(iot, ioh); 735 736 /* 737 * Cancel any pending I/O. 738 */ 739 epstop(ifp, 0); 740 741 if (sc->bustype != ELINK_BUS_PCI && sc->bustype != ELINK_BUS_EISA 742 && sc->bustype != ELINK_BUS_MCA) { 743 GO_WINDOW(0); 744 bus_space_write_2(iot, ioh, ELINK_W0_CONFIG_CTRL, 0); 745 bus_space_write_2(iot, ioh, ELINK_W0_CONFIG_CTRL, 746 ENABLE_DRQ_IRQ); 747 } 748 749 if (sc->bustype == ELINK_BUS_PCMCIA) { 750 bus_space_write_2(iot, ioh, ELINK_W0_RESOURCE_CFG, 0x3f00); 751 } 752 753 GO_WINDOW(2); 754 /* Reload the ether_addr. */ 755 addr = CLLADDR(ifp->if_sadl); 756 for (i = 0; i < 6; i += 2) 757 bus_space_write_2(iot, ioh, ELINK_W2_ADDR_0 + i, 758 (addr[i] << 0) | (addr[i + 1] << 8)); 759 760 /* 761 * Reset the station-address receive filter. 762 * A bug workaround for busmastering (Vortex, Demon) cards. 763 */ 764 for (i = 0; i < 6; i += 2) 765 bus_space_write_2(iot, ioh, ELINK_W2_RECVMASK_0 + i, 0); 766 767 ep_reset_cmd(sc, ELINK_COMMAND, RX_RESET); 768 ep_reset_cmd(sc, ELINK_COMMAND, TX_RESET); 769 770 GO_WINDOW(1); /* Window 1 is operating window */ 771 for (i = 0; i < 31; i++) 772 (void)bus_space_read_2(iot, ioh, 773 ep_w1_reg(sc, ELINK_W1_TX_STATUS)); 774 775 /* Set threshold for Tx-space available interrupt. */ 776 bus_space_write_2(iot, ioh, ELINK_COMMAND, 777 SET_TX_AVAIL_THRESH | (1600 >> sc->ep_pktlenshift)); 778 779 if (sc->ep_chipset == ELINK_CHIPSET_ROADRUNNER) { 780 /* 781 * Enable options in the PCMCIA LAN COR register, via 782 * RoadRunner Window 1. 783 * 784 * XXX MAGIC CONSTANTS! 785 */ 786 u_int16_t cor; 787 788 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, (1 << 11)); 789 790 cor = bus_space_read_2(iot, ioh, 0) & ~0x30; 791 if (sc->ep_flags & ELINK_FLAGS_USESHAREDMEM) 792 cor |= 0x10; 793 if (sc->ep_flags & ELINK_FLAGS_FORCENOWAIT) 794 cor |= 0x20; 795 bus_space_write_2(iot, ioh, 0, cor); 796 797 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_WRCTL, 0); 798 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, 0); 799 800 if (sc->ep_flags & ELINK_FLAGS_MII) { 801 ep_roadrunner_mii_enable(sc); 802 GO_WINDOW(1); 803 } 804 } 805 806 /* Enable interrupts. */ 807 bus_space_write_2(iot, ioh, ELINK_COMMAND, 808 SET_RD_0_MASK | WATCHED_INTERRUPTS); 809 bus_space_write_2(iot, ioh, ELINK_COMMAND, 810 SET_INTR_MASK | WATCHED_INTERRUPTS); 811 812 /* 813 * Attempt to get rid of any stray interrupts that occurred during 814 * configuration. On the i386 this isn't possible because one may 815 * already be queued. However, a single stray interrupt is 816 * unimportant. 817 */ 818 bus_space_write_2(iot, ioh, ELINK_COMMAND, ACK_INTR | 0xff); 819 820 epsetfilter(sc); 821 epsetmedia(sc); 822 823 bus_space_write_2(iot, ioh, ELINK_COMMAND, RX_ENABLE); 824 bus_space_write_2(iot, ioh, ELINK_COMMAND, TX_ENABLE); 825 826 epmbuffill(sc); 827 828 /* Interface is now `running', with no output active. */ 829 ifp->if_flags |= IFF_RUNNING; 830 ifp->if_flags &= ~IFF_OACTIVE; 831 832 if (sc->ep_flags & ELINK_FLAGS_MII) { 833 /* Start the one second clock. */ 834 callout_reset(&sc->sc_mii_callout, hz, ep_tick, sc); 835 } 836 837 /* Attempt to start output, if any. */ 838 epstart(ifp); 839 840 return (0); 841 } 842 843 844 /* 845 * Set multicast receive filter. 846 * elink3 hardware has no selective multicast filter in hardware. 847 * Enable reception of all multicasts and filter in software. 848 */ 849 void 850 epsetfilter(struct ep_softc *sc) 851 { 852 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 853 854 GO_WINDOW(1); /* Window 1 is operating window */ 855 bus_space_write_2(sc->sc_iot, sc->sc_ioh, ELINK_COMMAND, 856 SET_RX_FILTER | FIL_INDIVIDUAL | FIL_BRDCST | 857 ((ifp->if_flags & IFF_MULTICAST) ? FIL_MULTICAST : 0) | 858 ((ifp->if_flags & IFF_PROMISC) ? FIL_PROMISC : 0)); 859 } 860 861 int 862 ep_media_change(struct ifnet *ifp) 863 { 864 struct ep_softc *sc = ifp->if_softc; 865 866 if (sc->enabled && (ifp->if_flags & IFF_UP) != 0) 867 epreset(sc); 868 869 return (0); 870 } 871 872 /* 873 * Reset and enable the MII on the RoadRunner. 874 */ 875 void 876 ep_roadrunner_mii_enable(struct ep_softc *sc) 877 { 878 bus_space_tag_t iot = sc->sc_iot; 879 bus_space_handle_t ioh = sc->sc_ioh; 880 881 GO_WINDOW(3); 882 bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS, 883 ELINK_PCI_100BASE_MII|ELINK_RUNNER_ENABLE_MII); 884 delay(1000); 885 bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS, 886 ELINK_PCI_100BASE_MII|ELINK_RUNNER_MII_RESET| 887 ELINK_RUNNER_ENABLE_MII); 888 ep_reset_cmd(sc, ELINK_COMMAND, TX_RESET); 889 ep_reset_cmd(sc, ELINK_COMMAND, RX_RESET); 890 delay(1000); 891 bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS, 892 ELINK_PCI_100BASE_MII|ELINK_RUNNER_ENABLE_MII); 893 } 894 895 /* 896 * Set the card to use the specified media. 897 */ 898 void 899 epsetmedia(struct ep_softc *sc) 900 { 901 bus_space_tag_t iot = sc->sc_iot; 902 bus_space_handle_t ioh = sc->sc_ioh; 903 904 /* Turn everything off. First turn off linkbeat and UTP. */ 905 GO_WINDOW(4); 906 bus_space_write_2(iot, ioh, ELINK_W4_MEDIA_TYPE, 0x0); 907 908 /* Turn off coax */ 909 bus_space_write_2(iot, ioh, ELINK_COMMAND, STOP_TRANSCEIVER); 910 delay(1000); 911 912 /* 913 * If the device has MII, select it, and then tell the 914 * PHY which media to use. 915 */ 916 if (sc->ep_flags & ELINK_FLAGS_MII) { 917 int config0, config1; 918 919 GO_WINDOW(3); 920 921 if (sc->ep_chipset == ELINK_CHIPSET_ROADRUNNER) { 922 int resopt; 923 924 resopt = bus_space_read_2(iot, ioh, 925 ELINK_W3_RESET_OPTIONS); 926 bus_space_write_2(iot, ioh, ELINK_W3_RESET_OPTIONS, 927 resopt | ELINK_RUNNER_ENABLE_MII); 928 } 929 930 config0 = (u_int)bus_space_read_2(iot, ioh, 931 ELINK_W3_INTERNAL_CONFIG); 932 config1 = (u_int)bus_space_read_2(iot, ioh, 933 ELINK_W3_INTERNAL_CONFIG + 2); 934 935 config1 = config1 & ~CONFIG_MEDIAMASK; 936 config1 |= (ELINKMEDIA_MII << CONFIG_MEDIAMASK_SHIFT); 937 938 bus_space_write_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG, config0); 939 bus_space_write_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG + 2, 940 config1); 941 GO_WINDOW(1); /* back to operating window */ 942 943 mii_mediachg(&sc->sc_mii); 944 return; 945 } 946 947 /* 948 * Now turn on the selected media/transceiver. 949 */ 950 GO_WINDOW(4); 951 switch (IFM_SUBTYPE(sc->sc_mii.mii_media.ifm_cur->ifm_media)) { 952 case IFM_10_T: 953 bus_space_write_2(iot, ioh, ELINK_W4_MEDIA_TYPE, 954 JABBER_GUARD_ENABLE|LINKBEAT_ENABLE); 955 break; 956 957 case IFM_10_2: 958 bus_space_write_2(iot, ioh, ELINK_COMMAND, START_TRANSCEIVER); 959 DELAY(1000); /* 50ms not enmough? */ 960 break; 961 962 case IFM_100_TX: 963 case IFM_100_FX: 964 case IFM_100_T4: /* XXX check documentation */ 965 bus_space_write_2(iot, ioh, ELINK_W4_MEDIA_TYPE, 966 LINKBEAT_ENABLE); 967 DELAY(1000); /* not strictly necessary? */ 968 break; 969 970 case IFM_10_5: 971 bus_space_write_2(iot, ioh, ELINK_W4_MEDIA_TYPE, 972 SQE_ENABLE); 973 DELAY(1000); /* not strictly necessary? */ 974 break; 975 976 case IFM_MANUAL: 977 /* 978 * Nothing to do here; we are actually enabling the 979 * external PHY on the MII port. 980 */ 981 break; 982 983 case IFM_NONE: 984 printf("%s: interface disabled\n", device_xname(sc->sc_dev)); 985 return; 986 987 default: 988 panic("epsetmedia: impossible"); 989 } 990 991 /* 992 * Tell the chip which port to use. 993 */ 994 switch (sc->ep_chipset) { 995 case ELINK_CHIPSET_VORTEX: 996 case ELINK_CHIPSET_BOOMERANG: 997 { 998 int mctl, config0, config1; 999 1000 GO_WINDOW(3); 1001 config0 = (u_int)bus_space_read_2(iot, ioh, 1002 ELINK_W3_INTERNAL_CONFIG); 1003 config1 = (u_int)bus_space_read_2(iot, ioh, 1004 ELINK_W3_INTERNAL_CONFIG + 2); 1005 1006 config1 = config1 & ~CONFIG_MEDIAMASK; 1007 config1 |= (sc->sc_mii.mii_media.ifm_cur->ifm_data << 1008 CONFIG_MEDIAMASK_SHIFT); 1009 1010 bus_space_write_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG, config0); 1011 bus_space_write_2(iot, ioh, ELINK_W3_INTERNAL_CONFIG + 2, 1012 config1); 1013 1014 mctl = bus_space_read_2(iot, ioh, ELINK_W3_MAC_CONTROL); 1015 if (sc->sc_mii.mii_media.ifm_cur->ifm_media & IFM_FDX) 1016 mctl |= MAC_CONTROL_FDX; 1017 else 1018 mctl &= ~MAC_CONTROL_FDX; 1019 bus_space_write_2(iot, ioh, ELINK_W3_MAC_CONTROL, mctl); 1020 break; 1021 } 1022 default: 1023 { 1024 int w0_addr_cfg; 1025 1026 GO_WINDOW(0); 1027 w0_addr_cfg = bus_space_read_2(iot, ioh, ELINK_W0_ADDRESS_CFG); 1028 w0_addr_cfg &= 0x3fff; 1029 bus_space_write_2(iot, ioh, ELINK_W0_ADDRESS_CFG, w0_addr_cfg | 1030 (sc->sc_mii.mii_media.ifm_cur->ifm_data << 14)); 1031 DELAY(1000); 1032 break; 1033 } 1034 } 1035 1036 GO_WINDOW(1); /* Window 1 is operating window */ 1037 } 1038 1039 /* 1040 * Get currently-selected media from card. 1041 * (if_media callback, may be called before interface is brought up). 1042 */ 1043 void 1044 ep_media_status(struct ifnet *ifp, struct ifmediareq *req) 1045 { 1046 struct ep_softc *sc = ifp->if_softc; 1047 bus_space_tag_t iot = sc->sc_iot; 1048 bus_space_handle_t ioh = sc->sc_ioh; 1049 1050 if (sc->enabled == 0) { 1051 req->ifm_active = IFM_ETHER|IFM_NONE; 1052 req->ifm_status = 0; 1053 return; 1054 } 1055 1056 /* 1057 * If we have MII, go ask the PHY what's going on. 1058 */ 1059 if (sc->ep_flags & ELINK_FLAGS_MII) { 1060 mii_pollstat(&sc->sc_mii); 1061 req->ifm_active = sc->sc_mii.mii_media_active; 1062 req->ifm_status = sc->sc_mii.mii_media_status; 1063 return; 1064 } 1065 1066 /* 1067 * Ok, at this point we claim that our active media is 1068 * the currently selected media. We'll update our status 1069 * if our chipset allows us to detect link. 1070 */ 1071 req->ifm_active = sc->sc_mii.mii_media.ifm_cur->ifm_media; 1072 req->ifm_status = 0; 1073 1074 switch (sc->ep_chipset) { 1075 case ELINK_CHIPSET_VORTEX: 1076 case ELINK_CHIPSET_BOOMERANG: 1077 GO_WINDOW(4); 1078 req->ifm_status = IFM_AVALID; 1079 if (bus_space_read_2(iot, ioh, ELINK_W4_MEDIA_TYPE) & 1080 LINKBEAT_DETECT) 1081 req->ifm_status |= IFM_ACTIVE; 1082 GO_WINDOW(1); /* back to operating window */ 1083 break; 1084 } 1085 } 1086 1087 1088 1089 /* 1090 * Start outputting on the interface. 1091 * Always called as splnet(). 1092 */ 1093 void 1094 epstart(struct ifnet *ifp) 1095 { 1096 struct ep_softc *sc = ifp->if_softc; 1097 bus_space_tag_t iot = sc->sc_iot; 1098 bus_space_handle_t ioh = sc->sc_ioh; 1099 struct mbuf *m, *m0; 1100 int sh, len, pad; 1101 bus_size_t txreg; 1102 1103 /* Don't transmit if interface is busy or not running */ 1104 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1105 return; 1106 1107 startagain: 1108 /* Sneak a peek at the next packet */ 1109 IFQ_POLL(&ifp->if_snd, m0); 1110 if (m0 == 0) 1111 return; 1112 1113 /* We need to use m->m_pkthdr.len, so require the header */ 1114 if ((m0->m_flags & M_PKTHDR) == 0) 1115 panic("epstart: no header mbuf"); 1116 len = m0->m_pkthdr.len; 1117 1118 pad = (4 - len) & 3; 1119 1120 /* 1121 * The 3c509 automatically pads short packets to minimum ethernet 1122 * length, but we drop packets that are too large. Perhaps we should 1123 * truncate them instead? 1124 */ 1125 if (len + pad > ETHER_MAX_LEN) { 1126 /* packet is obviously too large: toss it */ 1127 ++ifp->if_oerrors; 1128 IFQ_DEQUEUE(&ifp->if_snd, m0); 1129 m_freem(m0); 1130 goto readcheck; 1131 } 1132 1133 if (bus_space_read_2(iot, ioh, ep_w1_reg(sc, ELINK_W1_FREE_TX)) < 1134 len + pad + 4) { 1135 bus_space_write_2(iot, ioh, ELINK_COMMAND, 1136 SET_TX_AVAIL_THRESH | 1137 ((len + pad + 4) >> sc->ep_pktlenshift)); 1138 /* not enough room in FIFO */ 1139 ifp->if_flags |= IFF_OACTIVE; 1140 return; 1141 } else { 1142 bus_space_write_2(iot, ioh, ELINK_COMMAND, 1143 SET_TX_AVAIL_THRESH | ELINK_THRESH_DISABLE); 1144 } 1145 1146 IFQ_DEQUEUE(&ifp->if_snd, m0); 1147 if (m0 == 0) /* not really needed */ 1148 return; 1149 1150 bus_space_write_2(iot, ioh, ELINK_COMMAND, SET_TX_START_THRESH | 1151 ((len / 4 + sc->tx_start_thresh) /* >> sc->ep_pktlenshift*/)); 1152 1153 bpf_mtap(ifp, m0); 1154 1155 /* 1156 * Do the output at a high interrupt priority level so that an 1157 * interrupt from another device won't cause a FIFO underrun. 1158 * We choose splsched() since that blocks essentially everything 1159 * except for interrupts from serial devices (which typically 1160 * lose data if their interrupt isn't serviced fast enough). 1161 * 1162 * XXX THIS CAN CAUSE CLOCK DRIFT! 1163 */ 1164 sh = splsched(); 1165 1166 txreg = ep_w1_reg(sc, ELINK_W1_TX_PIO_WR_1); 1167 1168 if (sc->ep_flags & ELINK_FLAGS_USEFIFOBUFFER) { 1169 /* 1170 * Prime the FIFO buffer counter (number of 16-bit 1171 * words about to be written to the FIFO). 1172 * 1173 * NOTE: NO OTHER ACCESS CAN BE PERFORMED WHILE THIS 1174 * COUNTER IS NON-ZERO! 1175 */ 1176 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_WRCTL, 1177 (len + pad) >> 1); 1178 } 1179 1180 bus_space_write_2(iot, ioh, txreg, len); 1181 bus_space_write_2(iot, ioh, txreg, 0xffff); /* Second is meaningless */ 1182 if (ELINK_IS_BUS_32(sc->bustype)) { 1183 for (m = m0; m;) { 1184 if (m->m_len > 3) { 1185 /* align our reads from core */ 1186 if (mtod(m, u_long) & 3) { 1187 u_long count = 1188 4 - (mtod(m, u_long) & 3); 1189 bus_space_write_multi_1(iot, ioh, 1190 txreg, mtod(m, u_int8_t *), count); 1191 m->m_data = 1192 (void *)(mtod(m, u_long) + count); 1193 m->m_len -= count; 1194 } 1195 bus_space_write_multi_stream_4(iot, ioh, 1196 txreg, mtod(m, u_int32_t *), m->m_len >> 2); 1197 m->m_data = (void *)(mtod(m, u_long) + 1198 (u_long)(m->m_len & ~3)); 1199 m->m_len -= m->m_len & ~3; 1200 } 1201 if (m->m_len) { 1202 bus_space_write_multi_1(iot, ioh, 1203 txreg, mtod(m, u_int8_t *), m->m_len); 1204 } 1205 MFREE(m, m0); 1206 m = m0; 1207 } 1208 } else { 1209 for (m = m0; m;) { 1210 if (m->m_len > 1) { 1211 if (mtod(m, u_long) & 1) { 1212 bus_space_write_1(iot, ioh, 1213 txreg, *(mtod(m, u_int8_t *))); 1214 m->m_data = 1215 (void *)(mtod(m, u_long) + 1); 1216 m->m_len -= 1; 1217 } 1218 bus_space_write_multi_stream_2(iot, ioh, 1219 txreg, mtod(m, u_int16_t *), 1220 m->m_len >> 1); 1221 } 1222 if (m->m_len & 1) { 1223 bus_space_write_1(iot, ioh, txreg, 1224 *(mtod(m, u_int8_t *) + m->m_len - 1)); 1225 } 1226 MFREE(m, m0); 1227 m = m0; 1228 } 1229 } 1230 while (pad--) 1231 bus_space_write_1(iot, ioh, txreg, 0); 1232 1233 splx(sh); 1234 1235 ++ifp->if_opackets; 1236 1237 readcheck: 1238 if ((bus_space_read_2(iot, ioh, ep_w1_reg(sc, ELINK_W1_RX_STATUS)) & 1239 ERR_INCOMPLETE) == 0) { 1240 /* We received a complete packet. */ 1241 u_int16_t status = bus_space_read_2(iot, ioh, ELINK_STATUS); 1242 1243 if ((status & INTR_LATCH) == 0) { 1244 /* 1245 * No interrupt, read the packet and continue 1246 * Is this supposed to happen? Is my motherboard 1247 * completely busted? 1248 */ 1249 epread(sc); 1250 } else { 1251 /* Got an interrupt, return so that it gets serviced. */ 1252 return; 1253 } 1254 } else { 1255 /* Check if we are stuck and reset [see XXX comment] */ 1256 if (epstatus(sc)) { 1257 if (ifp->if_flags & IFF_DEBUG) 1258 printf("%s: adapter reset\n", 1259 device_xname(sc->sc_dev)); 1260 epreset(sc); 1261 } 1262 } 1263 1264 goto startagain; 1265 } 1266 1267 1268 /* 1269 * XXX: The 3c509 card can get in a mode where both the fifo status bit 1270 * FIFOS_RX_OVERRUN and the status bit ERR_INCOMPLETE are set 1271 * We detect this situation and we reset the adapter. 1272 * It happens at times when there is a lot of broadcast traffic 1273 * on the cable (once in a blue moon). 1274 */ 1275 static int 1276 epstatus(struct ep_softc *sc) 1277 { 1278 bus_space_tag_t iot = sc->sc_iot; 1279 bus_space_handle_t ioh = sc->sc_ioh; 1280 u_int16_t fifost; 1281 1282 /* 1283 * Check the FIFO status and act accordingly 1284 */ 1285 GO_WINDOW(4); 1286 fifost = bus_space_read_2(iot, ioh, ELINK_W4_FIFO_DIAG); 1287 GO_WINDOW(1); 1288 1289 if (fifost & FIFOS_RX_UNDERRUN) { 1290 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1291 printf("%s: RX underrun\n", device_xname(sc->sc_dev)); 1292 epreset(sc); 1293 return 0; 1294 } 1295 1296 if (fifost & FIFOS_RX_STATUS_OVERRUN) { 1297 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1298 printf("%s: RX Status overrun\n", device_xname(sc->sc_dev)); 1299 return 1; 1300 } 1301 1302 if (fifost & FIFOS_RX_OVERRUN) { 1303 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1304 printf("%s: RX overrun\n", device_xname(sc->sc_dev)); 1305 return 1; 1306 } 1307 1308 if (fifost & FIFOS_TX_OVERRUN) { 1309 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1310 printf("%s: TX overrun\n", device_xname(sc->sc_dev)); 1311 epreset(sc); 1312 return 0; 1313 } 1314 1315 return 0; 1316 } 1317 1318 1319 static void 1320 eptxstat(struct ep_softc *sc) 1321 { 1322 bus_space_tag_t iot = sc->sc_iot; 1323 bus_space_handle_t ioh = sc->sc_ioh; 1324 int i; 1325 1326 /* 1327 * We need to read+write TX_STATUS until we get a 0 status 1328 * in order to turn off the interrupt flag. 1329 */ 1330 while ((i = bus_space_read_2(iot, ioh, 1331 ep_w1_reg(sc, ELINK_W1_TX_STATUS))) & TXS_COMPLETE) { 1332 bus_space_write_2(iot, ioh, ep_w1_reg(sc, ELINK_W1_TX_STATUS), 1333 0x0); 1334 1335 if (i & TXS_JABBER) { 1336 ++sc->sc_ethercom.ec_if.if_oerrors; 1337 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1338 printf("%s: jabber (%x)\n", 1339 device_xname(sc->sc_dev), i); 1340 epreset(sc); 1341 } else if (i & TXS_UNDERRUN) { 1342 ++sc->sc_ethercom.ec_if.if_oerrors; 1343 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 1344 printf("%s: fifo underrun (%x) @%d\n", 1345 device_xname(sc->sc_dev), i, 1346 sc->tx_start_thresh); 1347 if (sc->tx_succ_ok < 100) 1348 sc->tx_start_thresh = min(ETHER_MAX_LEN, 1349 sc->tx_start_thresh + 20); 1350 sc->tx_succ_ok = 0; 1351 epreset(sc); 1352 } else if (i & TXS_MAX_COLLISION) { 1353 ++sc->sc_ethercom.ec_if.if_collisions; 1354 bus_space_write_2(iot, ioh, ELINK_COMMAND, TX_ENABLE); 1355 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 1356 } else 1357 sc->tx_succ_ok = (sc->tx_succ_ok+1) & 127; 1358 } 1359 } 1360 1361 int 1362 epintr(void *arg) 1363 { 1364 struct ep_softc *sc = arg; 1365 bus_space_tag_t iot = sc->sc_iot; 1366 bus_space_handle_t ioh = sc->sc_ioh; 1367 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1368 u_int16_t status; 1369 int ret = 0; 1370 1371 if (sc->enabled == 0 || !device_is_active(sc->sc_dev)) 1372 return (0); 1373 1374 1375 for (;;) { 1376 status = bus_space_read_2(iot, ioh, ELINK_STATUS); 1377 1378 if ((status & WATCHED_INTERRUPTS) == 0) { 1379 if ((status & INTR_LATCH) == 0) { 1380 #if 0 1381 printf("%s: intr latch cleared\n", 1382 device_xname(sc->sc_dev)); 1383 #endif 1384 break; 1385 } 1386 } 1387 1388 ret = 1; 1389 1390 /* 1391 * Acknowledge any interrupts. It's important that we do this 1392 * first, since there would otherwise be a race condition. 1393 * Due to the i386 interrupt queueing, we may get spurious 1394 * interrupts occasionally. 1395 */ 1396 bus_space_write_2(iot, ioh, ELINK_COMMAND, ACK_INTR | 1397 (status & (INTR_LATCH | ALL_INTERRUPTS))); 1398 1399 #if 0 1400 status = bus_space_read_2(iot, ioh, ELINK_STATUS); 1401 1402 printf("%s: intr%s%s%s%s\n", device_xname(sc->sc_dev), 1403 (status & RX_COMPLETE)?" RX_COMPLETE":"", 1404 (status & TX_COMPLETE)?" TX_COMPLETE":"", 1405 (status & TX_AVAIL)?" TX_AVAIL":"", 1406 (status & CARD_FAILURE)?" CARD_FAILURE":""); 1407 #endif 1408 1409 if (status & RX_COMPLETE) { 1410 epread(sc); 1411 } 1412 if (status & TX_AVAIL) { 1413 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 1414 epstart(&sc->sc_ethercom.ec_if); 1415 } 1416 if (status & CARD_FAILURE) { 1417 printf("%s: adapter failure (%x)\n", 1418 device_xname(sc->sc_dev), status); 1419 #if 1 1420 epinit(ifp); 1421 #else 1422 epreset(sc); 1423 #endif 1424 return (1); 1425 } 1426 if (status & TX_COMPLETE) { 1427 eptxstat(sc); 1428 epstart(ifp); 1429 } 1430 1431 if (status) 1432 rnd_add_uint32(&sc->rnd_source, status); 1433 } 1434 1435 /* no more interrupts */ 1436 return (ret); 1437 } 1438 1439 void 1440 epread(struct ep_softc *sc) 1441 { 1442 bus_space_tag_t iot = sc->sc_iot; 1443 bus_space_handle_t ioh = sc->sc_ioh; 1444 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1445 struct mbuf *m; 1446 int len; 1447 1448 len = bus_space_read_2(iot, ioh, ep_w1_reg(sc, ELINK_W1_RX_STATUS)); 1449 1450 again: 1451 if (ifp->if_flags & IFF_DEBUG) { 1452 int err = len & ERR_MASK; 1453 const char *s = NULL; 1454 1455 if (len & ERR_INCOMPLETE) 1456 s = "incomplete packet"; 1457 else if (err == ERR_OVERRUN) 1458 s = "packet overrun"; 1459 else if (err == ERR_RUNT) 1460 s = "runt packet"; 1461 else if (err == ERR_ALIGNMENT) 1462 s = "bad alignment"; 1463 else if (err == ERR_CRC) 1464 s = "bad crc"; 1465 else if (err == ERR_OVERSIZE) 1466 s = "oversized packet"; 1467 else if (err == ERR_DRIBBLE) 1468 s = "dribble bits"; 1469 1470 if (s) 1471 printf("%s: %s\n", device_xname(sc->sc_dev), s); 1472 } 1473 1474 if (len & ERR_INCOMPLETE) 1475 return; 1476 1477 if (len & ERR_RX) { 1478 ++ifp->if_ierrors; 1479 goto abort; 1480 } 1481 1482 len &= RX_BYTES_MASK; /* Lower 11 bits = RX bytes. */ 1483 1484 /* Pull packet off interface. */ 1485 m = epget(sc, len); 1486 if (m == 0) { 1487 ifp->if_ierrors++; 1488 goto abort; 1489 } 1490 1491 ++ifp->if_ipackets; 1492 1493 /* 1494 * Check if there's a BPF listener on this interface. 1495 * If so, hand off the raw packet to BPF. 1496 */ 1497 bpf_mtap(ifp, m); 1498 1499 if_percpuq_enqueue(ifp->if_percpuq, m); 1500 1501 /* 1502 * In periods of high traffic we can actually receive enough 1503 * packets so that the fifo overrun bit will be set at this point, 1504 * even though we just read a packet. In this case we 1505 * are not going to receive any more interrupts. We check for 1506 * this condition and read again until the fifo is not full. 1507 * We could simplify this test by not using epstatus(), but 1508 * rechecking the RX_STATUS register directly. This test could 1509 * result in unnecessary looping in cases where there is a new 1510 * packet but the fifo is not full, but it will not fix the 1511 * stuck behavior. 1512 * 1513 * Even with this improvement, we still get packet overrun errors 1514 * which are hurting performance. Maybe when I get some more time 1515 * I'll modify epread() so that it can handle RX_EARLY interrupts. 1516 */ 1517 if (epstatus(sc)) { 1518 len = bus_space_read_2(iot, ioh, 1519 ep_w1_reg(sc, ELINK_W1_RX_STATUS)); 1520 /* Check if we are stuck and reset [see XXX comment] */ 1521 if (len & ERR_INCOMPLETE) { 1522 if (ifp->if_flags & IFF_DEBUG) 1523 printf("%s: adapter reset\n", 1524 device_xname(sc->sc_dev)); 1525 epreset(sc); 1526 return; 1527 } 1528 goto again; 1529 } 1530 1531 return; 1532 1533 abort: 1534 ep_discard_rxtop(iot, ioh); 1535 1536 } 1537 1538 struct mbuf * 1539 epget(struct ep_softc *sc, int totlen) 1540 { 1541 bus_space_tag_t iot = sc->sc_iot; 1542 bus_space_handle_t ioh = sc->sc_ioh; 1543 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1544 struct mbuf *m; 1545 bus_size_t rxreg; 1546 int len, remaining; 1547 int s; 1548 void *newdata; 1549 u_long offset; 1550 1551 m = sc->mb[sc->next_mb]; 1552 sc->mb[sc->next_mb] = 0; 1553 if (m == 0) { 1554 MGETHDR(m, M_DONTWAIT, MT_DATA); 1555 if (m == 0) 1556 return 0; 1557 } else { 1558 /* If the queue is no longer full, refill. */ 1559 if (sc->last_mb == sc->next_mb) 1560 callout_reset(&sc->sc_mbuf_callout, 1, epmbuffill, sc); 1561 1562 /* Convert one of our saved mbuf's. */ 1563 sc->next_mb = (sc->next_mb + 1) % MAX_MBS; 1564 m->m_data = m->m_pktdat; 1565 m->m_flags = M_PKTHDR; 1566 memset(&m->m_pkthdr, 0, sizeof(m->m_pkthdr)); 1567 } 1568 m_set_rcvif(m, ifp); 1569 m->m_pkthdr.len = totlen; 1570 len = MHLEN; 1571 1572 /* 1573 * Allocate big enough space to hold whole packet, to avoid 1574 * allocating new mbufs on splsched(). 1575 */ 1576 if (totlen + ALIGNBYTES > len) { 1577 if (totlen + ALIGNBYTES > MCLBYTES) { 1578 len = ALIGN(totlen + ALIGNBYTES); 1579 MEXTMALLOC(m, len, M_DONTWAIT); 1580 } else { 1581 len = MCLBYTES; 1582 MCLGET(m, M_DONTWAIT); 1583 } 1584 if ((m->m_flags & M_EXT) == 0) { 1585 m_free(m); 1586 return 0; 1587 } 1588 } 1589 1590 /* align the struct ip header */ 1591 newdata = (char *)ALIGN(m->m_data + sizeof(struct ether_header)) 1592 - sizeof(struct ether_header); 1593 m->m_data = newdata; 1594 m->m_len = totlen; 1595 1596 rxreg = ep_w1_reg(sc, ELINK_W1_RX_PIO_RD_1); 1597 remaining = totlen; 1598 offset = mtod(m, u_long); 1599 1600 /* 1601 * We read the packet at a high interrupt priority level so that 1602 * an interrupt from another device won't cause the card's packet 1603 * buffer to overflow. We choose splsched() since that blocks 1604 * essentially everything except for interrupts from serial 1605 * devices (which typically lose data if their interrupt isn't 1606 * serviced fast enough). 1607 * 1608 * XXX THIS CAN CAUSE CLOCK DRIFT! 1609 */ 1610 s = splsched(); 1611 1612 if (sc->ep_flags & ELINK_FLAGS_USEFIFOBUFFER) { 1613 /* 1614 * Prime the FIFO buffer counter (number of 16-bit 1615 * words about to be read from the FIFO). 1616 * 1617 * NOTE: NO OTHER ACCESS CAN BE PERFORMED WHILE THIS 1618 * COUNTER IS NON-ZERO! 1619 */ 1620 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, totlen >> 1); 1621 } 1622 1623 if (ELINK_IS_BUS_32(sc->bustype)) { 1624 /* 1625 * Read bytes up to the point where we are aligned. 1626 * (We can align to 4 bytes, rather than ALIGNBYTES, 1627 * here because we're later reading 4-byte chunks.) 1628 */ 1629 if ((remaining > 3) && (offset & 3)) { 1630 int count = (4 - (offset & 3)); 1631 bus_space_read_multi_1(iot, ioh, 1632 rxreg, (u_int8_t *) offset, count); 1633 offset += count; 1634 remaining -= count; 1635 } 1636 if (remaining > 3) { 1637 bus_space_read_multi_stream_4(iot, ioh, 1638 rxreg, (u_int32_t *) offset, 1639 remaining >> 2); 1640 offset += remaining & ~3; 1641 remaining &= 3; 1642 } 1643 if (remaining) { 1644 bus_space_read_multi_1(iot, ioh, 1645 rxreg, (u_int8_t *) offset, remaining); 1646 } 1647 } else { 1648 if ((remaining > 1) && (offset & 1)) { 1649 bus_space_read_multi_1(iot, ioh, 1650 rxreg, (u_int8_t *) offset, 1); 1651 remaining -= 1; 1652 offset += 1; 1653 } 1654 if (remaining > 1) { 1655 bus_space_read_multi_stream_2(iot, ioh, 1656 rxreg, (u_int16_t *) offset, 1657 remaining >> 1); 1658 offset += remaining & ~1; 1659 } 1660 if (remaining & 1) { 1661 bus_space_read_multi_1(iot, ioh, 1662 rxreg, (u_int8_t *) offset, remaining & 1); 1663 } 1664 } 1665 1666 ep_discard_rxtop(iot, ioh); 1667 1668 if (sc->ep_flags & ELINK_FLAGS_USEFIFOBUFFER) 1669 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, 0); 1670 splx(s); 1671 1672 return (m); 1673 } 1674 1675 int 1676 epioctl(struct ifnet *ifp, u_long cmd, void *data) 1677 { 1678 struct ep_softc *sc = ifp->if_softc; 1679 struct ifreq *ifr = (struct ifreq *)data; 1680 int s, error = 0; 1681 1682 s = splnet(); 1683 1684 switch (cmd) { 1685 1686 case SIOCSIFMEDIA: 1687 case SIOCGIFMEDIA: 1688 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd); 1689 break; 1690 1691 case SIOCADDMULTI: 1692 case SIOCDELMULTI: 1693 if (sc->enabled == 0) { 1694 error = EIO; 1695 break; 1696 } 1697 1698 default: 1699 error = ether_ioctl(ifp, cmd, data); 1700 1701 if (error == ENETRESET) { 1702 /* 1703 * Multicast list has changed; set the hardware filter 1704 * accordingly. 1705 */ 1706 if (ifp->if_flags & IFF_RUNNING) 1707 epreset(sc); 1708 error = 0; 1709 } 1710 break; 1711 } 1712 1713 splx(s); 1714 return (error); 1715 } 1716 1717 void 1718 epreset(struct ep_softc *sc) 1719 { 1720 int s; 1721 1722 s = splnet(); 1723 epinit(&sc->sc_ethercom.ec_if); 1724 splx(s); 1725 } 1726 1727 void 1728 epwatchdog(struct ifnet *ifp) 1729 { 1730 struct ep_softc *sc = ifp->if_softc; 1731 1732 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 1733 ++sc->sc_ethercom.ec_if.if_oerrors; 1734 1735 epreset(sc); 1736 } 1737 1738 void 1739 epstop(struct ifnet *ifp, int disable) 1740 { 1741 struct ep_softc *sc = ifp->if_softc; 1742 bus_space_tag_t iot = sc->sc_iot; 1743 bus_space_handle_t ioh = sc->sc_ioh; 1744 1745 if (sc->ep_flags & ELINK_FLAGS_MII) { 1746 /* Stop the one second clock. */ 1747 callout_stop(&sc->sc_mbuf_callout); 1748 1749 /* Down the MII. */ 1750 mii_down(&sc->sc_mii); 1751 } 1752 1753 if (sc->ep_chipset == ELINK_CHIPSET_ROADRUNNER) { 1754 /* 1755 * Clear the FIFO buffer count, thus halting 1756 * any currently-running transactions. 1757 */ 1758 GO_WINDOW(1); /* sanity */ 1759 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_WRCTL, 0); 1760 bus_space_write_2(iot, ioh, ELINK_W1_RUNNER_RDCTL, 0); 1761 } 1762 1763 bus_space_write_2(iot, ioh, ELINK_COMMAND, RX_DISABLE); 1764 ep_discard_rxtop(iot, ioh); 1765 1766 bus_space_write_2(iot, ioh, ELINK_COMMAND, TX_DISABLE); 1767 bus_space_write_2(iot, ioh, ELINK_COMMAND, STOP_TRANSCEIVER); 1768 1769 ep_reset_cmd(sc, ELINK_COMMAND, RX_RESET); 1770 ep_reset_cmd(sc, ELINK_COMMAND, TX_RESET); 1771 1772 bus_space_write_2(iot, ioh, ELINK_COMMAND, ACK_INTR | INTR_LATCH); 1773 bus_space_write_2(iot, ioh, ELINK_COMMAND, SET_RD_0_MASK); 1774 bus_space_write_2(iot, ioh, ELINK_COMMAND, SET_INTR_MASK); 1775 bus_space_write_2(iot, ioh, ELINK_COMMAND, SET_RX_FILTER); 1776 1777 epmbufempty(sc); 1778 1779 if (disable) 1780 epdisable(sc); 1781 1782 ifp->if_flags &= ~IFF_RUNNING; 1783 } 1784 1785 1786 /* 1787 * Before reboots, reset card completely. 1788 */ 1789 static bool 1790 epshutdown(device_t self, int howto) 1791 { 1792 struct ep_softc *sc = device_private(self); 1793 int s = splnet(); 1794 1795 if (sc->enabled) { 1796 epstop(&sc->sc_ethercom.ec_if, 0); 1797 ep_reset_cmd(sc, ELINK_COMMAND, GLOBAL_RESET); 1798 epdisable(sc); 1799 sc->enabled = 0; 1800 } 1801 splx(s); 1802 1803 return true; 1804 } 1805 1806 /* 1807 * We get eeprom data from the id_port given an offset into the 1808 * eeprom. Basically; after the ID_sequence is sent to all of 1809 * the cards; they enter the ID_CMD state where they will accept 1810 * command requests. 0x80-0xbf loads the eeprom data. We then 1811 * read the port 16 times and with every read; the cards check 1812 * for contention (ie: if one card writes a 0 bit and another 1813 * writes a 1 bit then the host sees a 0. At the end of the cycle; 1814 * each card compares the data on the bus; if there is a difference 1815 * then that card goes into ID_WAIT state again). In the meantime; 1816 * one bit of data is returned in the AX register which is conveniently 1817 * returned to us by bus_space_read_2(). Hence; we read 16 times getting one 1818 * bit of data with each read. 1819 * 1820 * NOTE: the caller must provide an i/o handle for ELINK_ID_PORT! 1821 */ 1822 u_int16_t 1823 epreadeeprom(bus_space_tag_t iot, bus_space_handle_t ioh, int offset) 1824 { 1825 u_int16_t data = 0; 1826 int i; 1827 1828 bus_space_write_2(iot, ioh, 0, 0x80 + offset); 1829 delay(1000); 1830 for (i = 0; i < 16; i++) 1831 data = (data << 1) | (bus_space_read_2(iot, ioh, 0) & 1); 1832 return (data); 1833 } 1834 1835 static int 1836 epbusyeeprom(struct ep_softc *sc) 1837 { 1838 bus_space_tag_t iot = sc->sc_iot; 1839 bus_space_handle_t ioh = sc->sc_ioh; 1840 bus_size_t eecmd; 1841 int i = 100, j; 1842 uint16_t busybit; 1843 1844 if (sc->bustype == ELINK_BUS_PCMCIA) { 1845 delay(1000); 1846 return 0; 1847 } 1848 1849 if (sc->ep_chipset == ELINK_CHIPSET_CORKSCREW) { 1850 eecmd = CORK_ASIC_EEPROM_COMMAND; 1851 busybit = CORK_EEPROM_BUSY; 1852 } else { 1853 eecmd = ELINK_W0_EEPROM_COMMAND; 1854 busybit = EEPROM_BUSY; 1855 } 1856 1857 j = 0; /* bad GCC flow analysis */ 1858 while (i--) { 1859 j = bus_space_read_2(iot, ioh, eecmd); 1860 if (j & busybit) 1861 delay(100); 1862 else 1863 break; 1864 } 1865 if (i == 0) { 1866 aprint_normal("\n"); 1867 aprint_error_dev(sc->sc_dev, "eeprom failed to come ready\n"); 1868 return (1); 1869 } 1870 if (sc->ep_chipset != ELINK_CHIPSET_CORKSCREW && 1871 (j & EEPROM_TST_MODE) != 0) { 1872 /* XXX PnP mode? */ 1873 printf("\n%s: erase pencil mark!\n", device_xname(sc->sc_dev)); 1874 return (1); 1875 } 1876 return (0); 1877 } 1878 1879 u_int16_t 1880 ep_read_eeprom(struct ep_softc *sc, u_int16_t offset) 1881 { 1882 bus_size_t eecmd, eedata; 1883 u_int16_t readcmd; 1884 1885 if (sc->ep_chipset == ELINK_CHIPSET_CORKSCREW) { 1886 eecmd = CORK_ASIC_EEPROM_COMMAND; 1887 eedata = CORK_ASIC_EEPROM_DATA; 1888 } else { 1889 eecmd = ELINK_W0_EEPROM_COMMAND; 1890 eedata = ELINK_W0_EEPROM_DATA; 1891 } 1892 1893 /* 1894 * RoadRunner has a larger EEPROM, so a different read command 1895 * is required. 1896 */ 1897 if (sc->ep_chipset == ELINK_CHIPSET_ROADRUNNER) 1898 readcmd = READ_EEPROM_RR; 1899 else 1900 readcmd = READ_EEPROM; 1901 1902 if (epbusyeeprom(sc)) 1903 return (0); /* XXX why is eeprom busy? */ 1904 1905 bus_space_write_2(sc->sc_iot, sc->sc_ioh, eecmd, readcmd | offset); 1906 1907 if (epbusyeeprom(sc)) 1908 return (0); /* XXX why is eeprom busy? */ 1909 1910 return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, eedata)); 1911 } 1912 1913 void 1914 epmbuffill(void *v) 1915 { 1916 struct ep_softc *sc = v; 1917 struct mbuf *m; 1918 int s, i; 1919 1920 s = splnet(); 1921 i = sc->last_mb; 1922 do { 1923 if (sc->mb[i] == 0) { 1924 MGET(m, M_DONTWAIT, MT_DATA); 1925 if (m == 0) 1926 break; 1927 sc->mb[i] = m; 1928 } 1929 i = (i + 1) % MAX_MBS; 1930 } while (i != sc->next_mb); 1931 sc->last_mb = i; 1932 /* If the queue was not filled, try again. */ 1933 if (sc->last_mb != sc->next_mb) 1934 callout_reset(&sc->sc_mbuf_callout, 1, epmbuffill, sc); 1935 splx(s); 1936 } 1937 1938 void 1939 epmbufempty(struct ep_softc *sc) 1940 { 1941 int s, i; 1942 1943 s = splnet(); 1944 for (i = 0; i < MAX_MBS; i++) { 1945 if (sc->mb[i]) { 1946 m_freem(sc->mb[i]); 1947 sc->mb[i] = NULL; 1948 } 1949 } 1950 sc->last_mb = sc->next_mb = 0; 1951 callout_stop(&sc->sc_mbuf_callout); 1952 splx(s); 1953 } 1954 1955 int 1956 epenable(struct ep_softc *sc) 1957 { 1958 1959 if (sc->enabled == 0 && sc->enable != NULL) { 1960 if ((*sc->enable)(sc) != 0) { 1961 aprint_error_dev(sc->sc_dev, "device enable failed\n"); 1962 return (EIO); 1963 } 1964 } 1965 1966 sc->enabled = 1; 1967 return (0); 1968 } 1969 1970 void 1971 epdisable(struct ep_softc *sc) 1972 { 1973 1974 if (sc->enabled != 0 && sc->disable != NULL) { 1975 (*sc->disable)(sc); 1976 sc->enabled = 0; 1977 } 1978 } 1979 1980 /* 1981 * ep_activate: 1982 * 1983 * Handle device activation/deactivation requests. 1984 */ 1985 int 1986 ep_activate(device_t self, enum devact act) 1987 { 1988 struct ep_softc *sc = device_private(self); 1989 1990 switch (act) { 1991 case DVACT_DEACTIVATE: 1992 if_deactivate(&sc->sc_ethercom.ec_if); 1993 return 0; 1994 default: 1995 return EOPNOTSUPP; 1996 } 1997 } 1998 1999 /* 2000 * ep_detach: 2001 * 2002 * Detach a elink3 interface. 2003 */ 2004 int 2005 ep_detach(device_t self, int flags) 2006 { 2007 struct ep_softc *sc = device_private(self); 2008 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 2009 2010 /* Succeed now if there's no work to do. */ 2011 if ((sc->sc_flags & ELINK_FLAGS_ATTACHED) == 0) 2012 return (0); 2013 2014 epdisable(sc); 2015 2016 callout_stop(&sc->sc_mii_callout); 2017 callout_stop(&sc->sc_mbuf_callout); 2018 2019 if (sc->ep_flags & ELINK_FLAGS_MII) { 2020 /* Detach all PHYs */ 2021 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 2022 } 2023 2024 /* Delete all remaining media. */ 2025 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 2026 2027 rnd_detach_source(&sc->rnd_source); 2028 ether_ifdetach(ifp); 2029 if_detach(ifp); 2030 2031 pmf_device_deregister(sc->sc_dev); 2032 2033 return (0); 2034 } 2035 2036 u_int32_t 2037 ep_mii_bitbang_read(device_t self) 2038 { 2039 struct ep_softc *sc = device_private(self); 2040 2041 /* We're already in Window 4. */ 2042 return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, 2043 ELINK_W4_BOOM_PHYSMGMT)); 2044 } 2045 2046 void 2047 ep_mii_bitbang_write(device_t self, u_int32_t val) 2048 { 2049 struct ep_softc *sc = device_private(self); 2050 2051 /* We're already in Window 4. */ 2052 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 2053 ELINK_W4_BOOM_PHYSMGMT, val); 2054 } 2055 2056 int 2057 ep_mii_readreg(device_t self, int phy, int reg) 2058 { 2059 struct ep_softc *sc = device_private(self); 2060 int val; 2061 2062 GO_WINDOW(4); 2063 2064 val = mii_bitbang_readreg(self, &ep_mii_bitbang_ops, phy, reg); 2065 2066 GO_WINDOW(1); 2067 2068 return (val); 2069 } 2070 2071 void 2072 ep_mii_writereg(device_t self, int phy, int reg, int val) 2073 { 2074 struct ep_softc *sc = device_private(self); 2075 2076 GO_WINDOW(4); 2077 2078 mii_bitbang_writereg(self, &ep_mii_bitbang_ops, phy, reg, val); 2079 2080 GO_WINDOW(1); 2081 } 2082 2083 void 2084 ep_statchg(struct ifnet *ifp) 2085 { 2086 struct ep_softc *sc = ifp->if_softc; 2087 bus_space_tag_t iot = sc->sc_iot; 2088 bus_space_handle_t ioh = sc->sc_ioh; 2089 int mctl; 2090 2091 GO_WINDOW(3); 2092 mctl = bus_space_read_2(iot, ioh, ELINK_W3_MAC_CONTROL); 2093 if (sc->sc_mii.mii_media_active & IFM_FDX) 2094 mctl |= MAC_CONTROL_FDX; 2095 else 2096 mctl &= ~MAC_CONTROL_FDX; 2097 bus_space_write_2(iot, ioh, ELINK_W3_MAC_CONTROL, mctl); 2098 GO_WINDOW(1); /* back to operating window */ 2099 } 2100 2101 void 2102 ep_power(int why, void *arg) 2103 { 2104 struct ep_softc *sc = arg; 2105 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 2106 int s; 2107 2108 s = splnet(); 2109 switch (why) { 2110 case PWR_SUSPEND: 2111 case PWR_STANDBY: 2112 epstop(ifp, 1); 2113 break; 2114 case PWR_RESUME: 2115 if (ifp->if_flags & IFF_UP) { 2116 (void)epinit(ifp); 2117 } 2118 break; 2119 case PWR_SOFTSUSPEND: 2120 case PWR_SOFTSTANDBY: 2121 case PWR_SOFTRESUME: 2122 break; 2123 } 2124 splx(s); 2125 } 2126
Indexes created Sat Sep 27 22:09:54 GMT 2025