1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1997, 1998, 1999 5 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bill Paul. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 /* 37 * 3Com 3c90x Etherlink XL PCI NIC driver 38 * 39 * Supports the 3Com "boomerang", "cyclone" and "hurricane" PCI 40 * bus-master chips (3c90x cards and embedded controllers) including 41 * the following: 42 * 43 * 3Com 3c900-TPO 10Mbps/RJ-45 44 * 3Com 3c900-COMBO 10Mbps/RJ-45,AUI,BNC 45 * 3Com 3c905-TX 10/100Mbps/RJ-45 46 * 3Com 3c905-T4 10/100Mbps/RJ-45 47 * 3Com 3c900B-TPO 10Mbps/RJ-45 48 * 3Com 3c900B-COMBO 10Mbps/RJ-45,AUI,BNC 49 * 3Com 3c900B-TPC 10Mbps/RJ-45,BNC 50 * 3Com 3c900B-FL 10Mbps/Fiber-optic 51 * 3Com 3c905B-COMBO 10/100Mbps/RJ-45,AUI,BNC 52 * 3Com 3c905B-TX 10/100Mbps/RJ-45 53 * 3Com 3c905B-FL/FX 10/100Mbps/Fiber-optic 54 * 3Com 3c905C-TX 10/100Mbps/RJ-45 (Tornado ASIC) 55 * 3Com 3c980-TX 10/100Mbps server adapter (Hurricane ASIC) 56 * 3Com 3c980C-TX 10/100Mbps server adapter (Tornado ASIC) 57 * 3Com 3cSOHO100-TX 10/100Mbps/RJ-45 (Hurricane ASIC) 58 * 3Com 3c450-TX 10/100Mbps/RJ-45 (Tornado ASIC) 59 * 3Com 3c555 10/100Mbps/RJ-45 (MiniPCI, Laptop Hurricane) 60 * 3Com 3c556 10/100Mbps/RJ-45 (MiniPCI, Hurricane ASIC) 61 * 3Com 3c556B 10/100Mbps/RJ-45 (MiniPCI, Hurricane ASIC) 62 * 3Com 3c575TX 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) 63 * 3Com 3c575B 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) 64 * 3Com 3c575C 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) 65 * 3Com 3cxfem656 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) 66 * 3Com 3cxfem656b 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) 67 * 3Com 3cxfem656c 10/100Mbps/RJ-45 (Cardbus, Tornado ASIC) 68 * Dell Optiplex GX1 on-board 3c918 10/100Mbps/RJ-45 69 * Dell on-board 3c920 10/100Mbps/RJ-45 70 * Dell Precision on-board 3c905B 10/100Mbps/RJ-45 71 * Dell Latitude laptop docking station embedded 3c905-TX 72 * 73 * Written by Bill Paul <wpaul@ctr.columbia.edu> 74 * Electrical Engineering Department 75 * Columbia University, New York City 76 */ 77 /* 78 * The 3c90x series chips use a bus-master DMA interface for transferring 79 * packets to and from the controller chip. Some of the "vortex" cards 80 * (3c59x) also supported a bus master mode, however for those chips 81 * you could only DMA packets to/from a contiguous memory buffer. For 82 * transmission this would mean copying the contents of the queued mbuf 83 * chain into an mbuf cluster and then DMAing the cluster. This extra 84 * copy would sort of defeat the purpose of the bus master support for 85 * any packet that doesn't fit into a single mbuf. 86 * 87 * By contrast, the 3c90x cards support a fragment-based bus master 88 * mode where mbuf chains can be encapsulated using TX descriptors. 89 * This is similar to other PCI chips such as the Texas Instruments 90 * ThunderLAN and the Intel 82557/82558. 91 * 92 * The "vortex" driver (if_vx.c) happens to work for the "boomerang" 93 * bus master chips because they maintain the old PIO interface for 94 * backwards compatibility, but starting with the 3c905B and the 95 * "cyclone" chips, the compatibility interface has been dropped. 96 * Since using bus master DMA is a big win, we use this driver to 97 * support the PCI "boomerang" chips even though they work with the 98 * "vortex" driver in order to obtain better performance. 99 */ 100 101 #ifdef HAVE_KERNEL_OPTION_HEADERS 102 #include "opt_device_polling.h" 103 #endif 104 105 #include <sys/param.h> 106 #include <sys/systm.h> 107 #include <sys/sockio.h> 108 #include <sys/endian.h> 109 #include <sys/kernel.h> 110 #include <sys/malloc.h> 111 #include <sys/mbuf.h> 112 #include <sys/module.h> 113 #include <sys/socket.h> 114 #include <sys/taskqueue.h> 115 116 #include <net/if.h> 117 #include <net/if_var.h> 118 #include <net/if_arp.h> 119 #include <net/ethernet.h> 120 #include <net/if_dl.h> 121 #include <net/if_media.h> 122 #include <net/if_types.h> 123 124 #include <net/bpf.h> 125 126 #include <machine/bus.h> 127 #include <machine/resource.h> 128 #include <sys/bus.h> 129 #include <sys/rman.h> 130 131 #include <dev/mii/mii.h> 132 #include <dev/mii/mii_bitbang.h> 133 #include <dev/mii/miivar.h> 134 135 #include <dev/pci/pcireg.h> 136 #include <dev/pci/pcivar.h> 137 138 MODULE_DEPEND(xl, pci, 1, 1, 1); 139 MODULE_DEPEND(xl, ether, 1, 1, 1); 140 MODULE_DEPEND(xl, miibus, 1, 1, 1); 141 142 /* "device miibus" required. See GENERIC if you get errors here. */ 143 #include "miibus_if.h" 144 145 #include <dev/xl/if_xlreg.h> 146 147 /* 148 * TX Checksumming is disabled by default for two reasons: 149 * - TX Checksumming will occasionally produce corrupt packets 150 * - TX Checksumming seems to reduce performance 151 * 152 * Only 905B/C cards were reported to have this problem, it is possible 153 * that later chips _may_ be immune. 154 */ 155 #define XL905B_TXCSUM_BROKEN 1 156 157 #ifdef XL905B_TXCSUM_BROKEN 158 #define XL905B_CSUM_FEATURES 0 159 #else 160 #define XL905B_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) 161 #endif 162 163 /* 164 * Various supported device vendors/types and their names. 165 */ 166 static const struct xl_type xl_devs[] = { 167 { TC_VENDORID, TC_DEVICEID_BOOMERANG_10BT, 168 "3Com 3c900-TPO Etherlink XL" }, 169 { TC_VENDORID, TC_DEVICEID_BOOMERANG_10BT_COMBO, 170 "3Com 3c900-COMBO Etherlink XL" }, 171 { TC_VENDORID, TC_DEVICEID_BOOMERANG_10_100BT, 172 "3Com 3c905-TX Fast Etherlink XL" }, 173 { TC_VENDORID, TC_DEVICEID_BOOMERANG_100BT4, 174 "3Com 3c905-T4 Fast Etherlink XL" }, 175 { TC_VENDORID, TC_DEVICEID_KRAKATOA_10BT, 176 "3Com 3c900B-TPO Etherlink XL" }, 177 { TC_VENDORID, TC_DEVICEID_KRAKATOA_10BT_COMBO, 178 "3Com 3c900B-COMBO Etherlink XL" }, 179 { TC_VENDORID, TC_DEVICEID_KRAKATOA_10BT_TPC, 180 "3Com 3c900B-TPC Etherlink XL" }, 181 { TC_VENDORID, TC_DEVICEID_CYCLONE_10FL, 182 "3Com 3c900B-FL Etherlink XL" }, 183 { TC_VENDORID, TC_DEVICEID_HURRICANE_10_100BT, 184 "3Com 3c905B-TX Fast Etherlink XL" }, 185 { TC_VENDORID, TC_DEVICEID_CYCLONE_10_100BT4, 186 "3Com 3c905B-T4 Fast Etherlink XL" }, 187 { TC_VENDORID, TC_DEVICEID_CYCLONE_10_100FX, 188 "3Com 3c905B-FX/SC Fast Etherlink XL" }, 189 { TC_VENDORID, TC_DEVICEID_CYCLONE_10_100_COMBO, 190 "3Com 3c905B-COMBO Fast Etherlink XL" }, 191 { TC_VENDORID, TC_DEVICEID_TORNADO_10_100BT, 192 "3Com 3c905C-TX Fast Etherlink XL" }, 193 { TC_VENDORID, TC_DEVICEID_TORNADO_10_100BT_920B, 194 "3Com 3c920B-EMB Integrated Fast Etherlink XL" }, 195 { TC_VENDORID, TC_DEVICEID_TORNADO_10_100BT_920B_WNM, 196 "3Com 3c920B-EMB-WNM Integrated Fast Etherlink XL" }, 197 { TC_VENDORID, TC_DEVICEID_HURRICANE_10_100BT_SERV, 198 "3Com 3c980 Fast Etherlink XL" }, 199 { TC_VENDORID, TC_DEVICEID_TORNADO_10_100BT_SERV, 200 "3Com 3c980C Fast Etherlink XL" }, 201 { TC_VENDORID, TC_DEVICEID_HURRICANE_SOHO100TX, 202 "3Com 3cSOHO100-TX OfficeConnect" }, 203 { TC_VENDORID, TC_DEVICEID_TORNADO_HOMECONNECT, 204 "3Com 3c450-TX HomeConnect" }, 205 { TC_VENDORID, TC_DEVICEID_HURRICANE_555, 206 "3Com 3c555 Fast Etherlink XL" }, 207 { TC_VENDORID, TC_DEVICEID_HURRICANE_556, 208 "3Com 3c556 Fast Etherlink XL" }, 209 { TC_VENDORID, TC_DEVICEID_HURRICANE_556B, 210 "3Com 3c556B Fast Etherlink XL" }, 211 { TC_VENDORID, TC_DEVICEID_HURRICANE_575A, 212 "3Com 3c575TX Fast Etherlink XL" }, 213 { TC_VENDORID, TC_DEVICEID_HURRICANE_575B, 214 "3Com 3c575B Fast Etherlink XL" }, 215 { TC_VENDORID, TC_DEVICEID_HURRICANE_575C, 216 "3Com 3c575C Fast Etherlink XL" }, 217 { TC_VENDORID, TC_DEVICEID_HURRICANE_656, 218 "3Com 3c656 Fast Etherlink XL" }, 219 { TC_VENDORID, TC_DEVICEID_HURRICANE_656B, 220 "3Com 3c656B Fast Etherlink XL" }, 221 { TC_VENDORID, TC_DEVICEID_TORNADO_656C, 222 "3Com 3c656C Fast Etherlink XL" }, 223 { 0, 0, NULL } 224 }; 225 226 static int xl_probe(device_t); 227 static int xl_attach(device_t); 228 static int xl_detach(device_t); 229 230 static int xl_newbuf(struct xl_softc *, struct xl_chain_onefrag *); 231 static void xl_tick(void *); 232 static void xl_stats_update(struct xl_softc *); 233 static int xl_encap(struct xl_softc *, struct xl_chain *, struct mbuf **); 234 static int xl_rxeof(struct xl_softc *); 235 static void xl_rxeof_task(void *, int); 236 static int xl_rx_resync(struct xl_softc *); 237 static void xl_txeof(struct xl_softc *); 238 static void xl_txeof_90xB(struct xl_softc *); 239 static void xl_txeoc(struct xl_softc *); 240 static void xl_intr(void *); 241 static void xl_start(if_t); 242 static void xl_start_locked(if_t); 243 static void xl_start_90xB_locked(if_t); 244 static int xl_ioctl(if_t, u_long, caddr_t); 245 static void xl_init(void *); 246 static void xl_init_locked(struct xl_softc *); 247 static void xl_stop(struct xl_softc *); 248 static int xl_watchdog(struct xl_softc *); 249 static int xl_shutdown(device_t); 250 static int xl_suspend(device_t); 251 static int xl_resume(device_t); 252 static void xl_setwol(struct xl_softc *); 253 254 #ifdef DEVICE_POLLING 255 static int xl_poll(if_t ifp, enum poll_cmd cmd, int count); 256 static int xl_poll_locked(if_t ifp, enum poll_cmd cmd, int count); 257 #endif 258 259 static int xl_ifmedia_upd(if_t); 260 static void xl_ifmedia_sts(if_t, struct ifmediareq *); 261 262 static int xl_eeprom_wait(struct xl_softc *); 263 static int xl_read_eeprom(struct xl_softc *, caddr_t, int, int, int); 264 265 static void xl_rxfilter(struct xl_softc *); 266 static void xl_rxfilter_90x(struct xl_softc *); 267 static void xl_rxfilter_90xB(struct xl_softc *); 268 static void xl_setcfg(struct xl_softc *); 269 static void xl_setmode(struct xl_softc *, int); 270 static void xl_reset(struct xl_softc *); 271 static int xl_list_rx_init(struct xl_softc *); 272 static int xl_list_tx_init(struct xl_softc *); 273 static int xl_list_tx_init_90xB(struct xl_softc *); 274 static void xl_wait(struct xl_softc *); 275 static void xl_mediacheck(struct xl_softc *); 276 static void xl_choose_media(struct xl_softc *sc, int *media); 277 static void xl_choose_xcvr(struct xl_softc *, int); 278 static void xl_dma_map_addr(void *, bus_dma_segment_t *, int, int); 279 #ifdef notdef 280 static void xl_testpacket(struct xl_softc *); 281 #endif 282 283 static int xl_miibus_readreg(device_t, int, int); 284 static int xl_miibus_writereg(device_t, int, int, int); 285 static void xl_miibus_statchg(device_t); 286 static void xl_miibus_mediainit(device_t); 287 288 /* 289 * MII bit-bang glue 290 */ 291 static uint32_t xl_mii_bitbang_read(device_t); 292 static void xl_mii_bitbang_write(device_t, uint32_t); 293 294 static const struct mii_bitbang_ops xl_mii_bitbang_ops = { 295 xl_mii_bitbang_read, 296 xl_mii_bitbang_write, 297 { 298 XL_MII_DATA, /* MII_BIT_MDO */ 299 XL_MII_DATA, /* MII_BIT_MDI */ 300 XL_MII_CLK, /* MII_BIT_MDC */ 301 XL_MII_DIR, /* MII_BIT_DIR_HOST_PHY */ 302 0, /* MII_BIT_DIR_PHY_HOST */ 303 } 304 }; 305 306 static device_method_t xl_methods[] = { 307 /* Device interface */ 308 DEVMETHOD(device_probe, xl_probe), 309 DEVMETHOD(device_attach, xl_attach), 310 DEVMETHOD(device_detach, xl_detach), 311 DEVMETHOD(device_shutdown, xl_shutdown), 312 DEVMETHOD(device_suspend, xl_suspend), 313 DEVMETHOD(device_resume, xl_resume), 314 315 /* MII interface */ 316 DEVMETHOD(miibus_readreg, xl_miibus_readreg), 317 DEVMETHOD(miibus_writereg, xl_miibus_writereg), 318 DEVMETHOD(miibus_statchg, xl_miibus_statchg), 319 DEVMETHOD(miibus_mediainit, xl_miibus_mediainit), 320 321 DEVMETHOD_END 322 }; 323 324 static driver_t xl_driver = { 325 "xl", 326 xl_methods, 327 sizeof(struct xl_softc) 328 }; 329 330 DRIVER_MODULE_ORDERED(xl, pci, xl_driver, NULL, NULL, SI_ORDER_ANY); 331 DRIVER_MODULE(miibus, xl, miibus_driver, NULL, NULL); 332 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, xl, xl_devs, 333 nitems(xl_devs) - 1); 334 335 static void 336 xl_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 337 { 338 u_int32_t *paddr; 339 340 paddr = arg; 341 *paddr = segs->ds_addr; 342 } 343 344 /* 345 * Murphy's law says that it's possible the chip can wedge and 346 * the 'command in progress' bit may never clear. Hence, we wait 347 * only a finite amount of time to avoid getting caught in an 348 * infinite loop. Normally this delay routine would be a macro, 349 * but it isn't called during normal operation so we can afford 350 * to make it a function. Suppress warning when card gone. 351 */ 352 static void 353 xl_wait(struct xl_softc *sc) 354 { 355 int i; 356 357 for (i = 0; i < XL_TIMEOUT; i++) { 358 if ((CSR_READ_2(sc, XL_STATUS) & XL_STAT_CMDBUSY) == 0) 359 break; 360 } 361 362 if (i == XL_TIMEOUT && bus_child_present(sc->xl_dev)) 363 device_printf(sc->xl_dev, "command never completed!\n"); 364 } 365 366 /* 367 * MII access routines are provided for adapters with external 368 * PHYs (3c905-TX, 3c905-T4, 3c905B-T4) and those with built-in 369 * autoneg logic that's faked up to look like a PHY (3c905B-TX). 370 * Note: if you don't perform the MDIO operations just right, 371 * it's possible to end up with code that works correctly with 372 * some chips/CPUs/processor speeds/bus speeds/etc but not 373 * with others. 374 */ 375 376 /* 377 * Read the MII serial port for the MII bit-bang module. 378 */ 379 static uint32_t 380 xl_mii_bitbang_read(device_t dev) 381 { 382 struct xl_softc *sc; 383 uint32_t val; 384 385 sc = device_get_softc(dev); 386 387 /* We're already in window 4. */ 388 val = CSR_READ_2(sc, XL_W4_PHY_MGMT); 389 CSR_BARRIER(sc, XL_W4_PHY_MGMT, 2, 390 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 391 392 return (val); 393 } 394 395 /* 396 * Write the MII serial port for the MII bit-bang module. 397 */ 398 static void 399 xl_mii_bitbang_write(device_t dev, uint32_t val) 400 { 401 struct xl_softc *sc; 402 403 sc = device_get_softc(dev); 404 405 /* We're already in window 4. */ 406 CSR_WRITE_2(sc, XL_W4_PHY_MGMT, val); 407 CSR_BARRIER(sc, XL_W4_PHY_MGMT, 2, 408 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 409 } 410 411 static int 412 xl_miibus_readreg(device_t dev, int phy, int reg) 413 { 414 struct xl_softc *sc; 415 416 sc = device_get_softc(dev); 417 418 /* Select the window 4. */ 419 XL_SEL_WIN(4); 420 421 return (mii_bitbang_readreg(dev, &xl_mii_bitbang_ops, phy, reg)); 422 } 423 424 static int 425 xl_miibus_writereg(device_t dev, int phy, int reg, int data) 426 { 427 struct xl_softc *sc; 428 429 sc = device_get_softc(dev); 430 431 /* Select the window 4. */ 432 XL_SEL_WIN(4); 433 434 mii_bitbang_writereg(dev, &xl_mii_bitbang_ops, phy, reg, data); 435 436 return (0); 437 } 438 439 static void 440 xl_miibus_statchg(device_t dev) 441 { 442 struct xl_softc *sc; 443 struct mii_data *mii; 444 uint8_t macctl; 445 446 sc = device_get_softc(dev); 447 mii = device_get_softc(sc->xl_miibus); 448 449 xl_setcfg(sc); 450 451 /* Set ASIC's duplex mode to match the PHY. */ 452 XL_SEL_WIN(3); 453 macctl = CSR_READ_1(sc, XL_W3_MAC_CTRL); 454 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 455 macctl |= XL_MACCTRL_DUPLEX; 456 if (sc->xl_type == XL_TYPE_905B) { 457 if ((IFM_OPTIONS(mii->mii_media_active) & 458 IFM_ETH_RXPAUSE) != 0) 459 macctl |= XL_MACCTRL_FLOW_CONTROL_ENB; 460 else 461 macctl &= ~XL_MACCTRL_FLOW_CONTROL_ENB; 462 } 463 } else { 464 macctl &= ~XL_MACCTRL_DUPLEX; 465 if (sc->xl_type == XL_TYPE_905B) 466 macctl &= ~XL_MACCTRL_FLOW_CONTROL_ENB; 467 } 468 CSR_WRITE_1(sc, XL_W3_MAC_CTRL, macctl); 469 } 470 471 /* 472 * Special support for the 3c905B-COMBO. This card has 10/100 support 473 * plus BNC and AUI ports. This means we will have both an miibus attached 474 * plus some non-MII media settings. In order to allow this, we have to 475 * add the extra media to the miibus's ifmedia struct, but we can't do 476 * that during xl_attach() because the miibus hasn't been attached yet. 477 * So instead, we wait until the miibus probe/attach is done, at which 478 * point we will get a callback telling is that it's safe to add our 479 * extra media. 480 */ 481 static void 482 xl_miibus_mediainit(device_t dev) 483 { 484 struct xl_softc *sc; 485 struct mii_data *mii; 486 struct ifmedia *ifm; 487 488 sc = device_get_softc(dev); 489 mii = device_get_softc(sc->xl_miibus); 490 ifm = &mii->mii_media; 491 492 if (sc->xl_media & (XL_MEDIAOPT_AUI | XL_MEDIAOPT_10FL)) { 493 /* 494 * Check for a 10baseFL board in disguise. 495 */ 496 if (sc->xl_type == XL_TYPE_905B && 497 sc->xl_media == XL_MEDIAOPT_10FL) { 498 if (bootverbose) 499 device_printf(sc->xl_dev, "found 10baseFL\n"); 500 ifmedia_add(ifm, IFM_ETHER | IFM_10_FL, 0, NULL); 501 ifmedia_add(ifm, IFM_ETHER | IFM_10_FL|IFM_HDX, 0, 502 NULL); 503 if (sc->xl_caps & XL_CAPS_FULL_DUPLEX) 504 ifmedia_add(ifm, 505 IFM_ETHER | IFM_10_FL | IFM_FDX, 0, NULL); 506 } else { 507 if (bootverbose) 508 device_printf(sc->xl_dev, "found AUI\n"); 509 ifmedia_add(ifm, IFM_ETHER | IFM_10_5, 0, NULL); 510 } 511 } 512 513 if (sc->xl_media & XL_MEDIAOPT_BNC) { 514 if (bootverbose) 515 device_printf(sc->xl_dev, "found BNC\n"); 516 ifmedia_add(ifm, IFM_ETHER | IFM_10_2, 0, NULL); 517 } 518 } 519 520 /* 521 * The EEPROM is slow: give it time to come ready after issuing 522 * it a command. 523 */ 524 static int 525 xl_eeprom_wait(struct xl_softc *sc) 526 { 527 int i; 528 529 for (i = 0; i < 100; i++) { 530 if (CSR_READ_2(sc, XL_W0_EE_CMD) & XL_EE_BUSY) 531 DELAY(162); 532 else 533 break; 534 } 535 536 if (i == 100) { 537 device_printf(sc->xl_dev, "eeprom failed to come ready\n"); 538 return (1); 539 } 540 541 return (0); 542 } 543 544 /* 545 * Read a sequence of words from the EEPROM. Note that ethernet address 546 * data is stored in the EEPROM in network byte order. 547 */ 548 static int 549 xl_read_eeprom(struct xl_softc *sc, caddr_t dest, int off, int cnt, int swap) 550 { 551 int err = 0, i; 552 u_int16_t word = 0, *ptr; 553 554 #define EEPROM_5BIT_OFFSET(A) ((((A) << 2) & 0x7F00) | ((A) & 0x003F)) 555 #define EEPROM_8BIT_OFFSET(A) ((A) & 0x003F) 556 /* 557 * XXX: WARNING! DANGER! 558 * It's easy to accidentally overwrite the rom content! 559 * Note: the 3c575 uses 8bit EEPROM offsets. 560 */ 561 XL_SEL_WIN(0); 562 563 if (xl_eeprom_wait(sc)) 564 return (1); 565 566 if (sc->xl_flags & XL_FLAG_EEPROM_OFFSET_30) 567 off += 0x30; 568 569 for (i = 0; i < cnt; i++) { 570 if (sc->xl_flags & XL_FLAG_8BITROM) 571 CSR_WRITE_2(sc, XL_W0_EE_CMD, 572 XL_EE_8BIT_READ | EEPROM_8BIT_OFFSET(off + i)); 573 else 574 CSR_WRITE_2(sc, XL_W0_EE_CMD, 575 XL_EE_READ | EEPROM_5BIT_OFFSET(off + i)); 576 err = xl_eeprom_wait(sc); 577 if (err) 578 break; 579 word = CSR_READ_2(sc, XL_W0_EE_DATA); 580 ptr = (u_int16_t *)(dest + (i * 2)); 581 if (swap) 582 *ptr = ntohs(word); 583 else 584 *ptr = word; 585 } 586 587 return (err ? 1 : 0); 588 } 589 590 static void 591 xl_rxfilter(struct xl_softc *sc) 592 { 593 594 if (sc->xl_type == XL_TYPE_905B) 595 xl_rxfilter_90xB(sc); 596 else 597 xl_rxfilter_90x(sc); 598 } 599 600 /* 601 * NICs older than the 3c905B have only one multicast option, which 602 * is to enable reception of all multicast frames. 603 */ 604 static u_int 605 xl_check_maddr_90x(void *arg, struct sockaddr_dl *sdl, u_int cnt) 606 { 607 uint8_t *rxfilt = arg; 608 609 *rxfilt |= XL_RXFILTER_ALLMULTI; 610 611 return (1); 612 } 613 614 static void 615 xl_rxfilter_90x(struct xl_softc *sc) 616 { 617 if_t ifp; 618 u_int8_t rxfilt; 619 620 XL_LOCK_ASSERT(sc); 621 622 ifp = sc->xl_ifp; 623 624 XL_SEL_WIN(5); 625 rxfilt = CSR_READ_1(sc, XL_W5_RX_FILTER); 626 rxfilt &= ~(XL_RXFILTER_ALLFRAMES | XL_RXFILTER_ALLMULTI | 627 XL_RXFILTER_BROADCAST | XL_RXFILTER_INDIVIDUAL); 628 629 /* Set the individual bit to receive frames for this host only. */ 630 rxfilt |= XL_RXFILTER_INDIVIDUAL; 631 /* Set capture broadcast bit to capture broadcast frames. */ 632 if (if_getflags(ifp) & IFF_BROADCAST) 633 rxfilt |= XL_RXFILTER_BROADCAST; 634 635 /* If we want promiscuous mode, set the allframes bit. */ 636 if (if_getflags(ifp) & (IFF_PROMISC | IFF_ALLMULTI)) { 637 if (if_getflags(ifp) & IFF_PROMISC) 638 rxfilt |= XL_RXFILTER_ALLFRAMES; 639 if (if_getflags(ifp) & IFF_ALLMULTI) 640 rxfilt |= XL_RXFILTER_ALLMULTI; 641 } else 642 if_foreach_llmaddr(sc->xl_ifp, xl_check_maddr_90x, &rxfilt); 643 644 CSR_WRITE_2(sc, XL_COMMAND, rxfilt | XL_CMD_RX_SET_FILT); 645 XL_SEL_WIN(7); 646 } 647 648 /* 649 * 3c905B adapters have a hash filter that we can program. 650 * Note: the 3c905B currently only supports a 64-bit 651 * hash table, which means we really only need 6 bits, 652 * but the manual indicates that future chip revisions 653 * will have a 256-bit hash table, hence the routine 654 * is set up to calculate 8 bits of position info in 655 * case we need it some day. 656 * Note II, The Sequel: _CURRENT_ versions of the 657 * 3c905B have a 256 bit hash table. This means we have 658 * to use all 8 bits regardless. On older cards, the 659 * upper 2 bits will be ignored. Grrrr.... 660 */ 661 static u_int 662 xl_check_maddr_90xB(void *arg, struct sockaddr_dl *sdl, u_int count) 663 { 664 struct xl_softc *sc = arg; 665 uint16_t h; 666 667 h = ether_crc32_be(LLADDR(sdl), ETHER_ADDR_LEN) & 0xFF; 668 CSR_WRITE_2(sc, XL_COMMAND, h | XL_CMD_RX_SET_HASH | XL_HASH_SET); 669 670 return (1); 671 } 672 673 static void 674 xl_rxfilter_90xB(struct xl_softc *sc) 675 { 676 if_t ifp; 677 int i; 678 u_int8_t rxfilt; 679 680 XL_LOCK_ASSERT(sc); 681 682 ifp = sc->xl_ifp; 683 684 XL_SEL_WIN(5); 685 rxfilt = CSR_READ_1(sc, XL_W5_RX_FILTER); 686 rxfilt &= ~(XL_RXFILTER_ALLFRAMES | XL_RXFILTER_ALLMULTI | 687 XL_RXFILTER_BROADCAST | XL_RXFILTER_INDIVIDUAL | 688 XL_RXFILTER_MULTIHASH); 689 690 /* Set the individual bit to receive frames for this host only. */ 691 rxfilt |= XL_RXFILTER_INDIVIDUAL; 692 /* Set capture broadcast bit to capture broadcast frames. */ 693 if (if_getflags(ifp) & IFF_BROADCAST) 694 rxfilt |= XL_RXFILTER_BROADCAST; 695 696 /* If we want promiscuous mode, set the allframes bit. */ 697 if (if_getflags(ifp) & (IFF_PROMISC | IFF_ALLMULTI)) { 698 if (if_getflags(ifp) & IFF_PROMISC) 699 rxfilt |= XL_RXFILTER_ALLFRAMES; 700 if (if_getflags(ifp) & IFF_ALLMULTI) 701 rxfilt |= XL_RXFILTER_ALLMULTI; 702 } else { 703 /* First, zot all the existing hash bits. */ 704 for (i = 0; i < XL_HASHFILT_SIZE; i++) 705 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_HASH | i); 706 707 /* Now program new ones. */ 708 if (if_foreach_llmaddr(sc->xl_ifp, xl_check_maddr_90xB, sc) > 0) 709 rxfilt |= XL_RXFILTER_MULTIHASH; 710 } 711 712 CSR_WRITE_2(sc, XL_COMMAND, rxfilt | XL_CMD_RX_SET_FILT); 713 XL_SEL_WIN(7); 714 } 715 716 static void 717 xl_setcfg(struct xl_softc *sc) 718 { 719 u_int32_t icfg; 720 721 /*XL_LOCK_ASSERT(sc);*/ 722 723 XL_SEL_WIN(3); 724 icfg = CSR_READ_4(sc, XL_W3_INTERNAL_CFG); 725 icfg &= ~XL_ICFG_CONNECTOR_MASK; 726 if (sc->xl_media & XL_MEDIAOPT_MII || 727 sc->xl_media & XL_MEDIAOPT_BT4) 728 icfg |= (XL_XCVR_MII << XL_ICFG_CONNECTOR_BITS); 729 if (sc->xl_media & XL_MEDIAOPT_BTX) 730 icfg |= (XL_XCVR_AUTO << XL_ICFG_CONNECTOR_BITS); 731 732 CSR_WRITE_4(sc, XL_W3_INTERNAL_CFG, icfg); 733 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); 734 } 735 736 static void 737 xl_setmode(struct xl_softc *sc, int media) 738 { 739 u_int32_t icfg; 740 u_int16_t mediastat; 741 char *pmsg = "", *dmsg = ""; 742 743 XL_LOCK_ASSERT(sc); 744 745 XL_SEL_WIN(4); 746 mediastat = CSR_READ_2(sc, XL_W4_MEDIA_STATUS); 747 XL_SEL_WIN(3); 748 icfg = CSR_READ_4(sc, XL_W3_INTERNAL_CFG); 749 750 if (sc->xl_media & XL_MEDIAOPT_BT) { 751 if (IFM_SUBTYPE(media) == IFM_10_T) { 752 pmsg = "10baseT transceiver"; 753 sc->xl_xcvr = XL_XCVR_10BT; 754 icfg &= ~XL_ICFG_CONNECTOR_MASK; 755 icfg |= (XL_XCVR_10BT << XL_ICFG_CONNECTOR_BITS); 756 mediastat |= XL_MEDIASTAT_LINKBEAT | 757 XL_MEDIASTAT_JABGUARD; 758 mediastat &= ~XL_MEDIASTAT_SQEENB; 759 } 760 } 761 762 if (sc->xl_media & XL_MEDIAOPT_BFX) { 763 if (IFM_SUBTYPE(media) == IFM_100_FX) { 764 pmsg = "100baseFX port"; 765 sc->xl_xcvr = XL_XCVR_100BFX; 766 icfg &= ~XL_ICFG_CONNECTOR_MASK; 767 icfg |= (XL_XCVR_100BFX << XL_ICFG_CONNECTOR_BITS); 768 mediastat |= XL_MEDIASTAT_LINKBEAT; 769 mediastat &= ~XL_MEDIASTAT_SQEENB; 770 } 771 } 772 773 if (sc->xl_media & (XL_MEDIAOPT_AUI|XL_MEDIAOPT_10FL)) { 774 if (IFM_SUBTYPE(media) == IFM_10_5) { 775 pmsg = "AUI port"; 776 sc->xl_xcvr = XL_XCVR_AUI; 777 icfg &= ~XL_ICFG_CONNECTOR_MASK; 778 icfg |= (XL_XCVR_AUI << XL_ICFG_CONNECTOR_BITS); 779 mediastat &= ~(XL_MEDIASTAT_LINKBEAT | 780 XL_MEDIASTAT_JABGUARD); 781 mediastat |= ~XL_MEDIASTAT_SQEENB; 782 } 783 if (IFM_SUBTYPE(media) == IFM_10_FL) { 784 pmsg = "10baseFL transceiver"; 785 sc->xl_xcvr = XL_XCVR_AUI; 786 icfg &= ~XL_ICFG_CONNECTOR_MASK; 787 icfg |= (XL_XCVR_AUI << XL_ICFG_CONNECTOR_BITS); 788 mediastat &= ~(XL_MEDIASTAT_LINKBEAT | 789 XL_MEDIASTAT_JABGUARD); 790 mediastat |= ~XL_MEDIASTAT_SQEENB; 791 } 792 } 793 794 if (sc->xl_media & XL_MEDIAOPT_BNC) { 795 if (IFM_SUBTYPE(media) == IFM_10_2) { 796 pmsg = "AUI port"; 797 sc->xl_xcvr = XL_XCVR_COAX; 798 icfg &= ~XL_ICFG_CONNECTOR_MASK; 799 icfg |= (XL_XCVR_COAX << XL_ICFG_CONNECTOR_BITS); 800 mediastat &= ~(XL_MEDIASTAT_LINKBEAT | 801 XL_MEDIASTAT_JABGUARD | XL_MEDIASTAT_SQEENB); 802 } 803 } 804 805 if ((media & IFM_GMASK) == IFM_FDX || 806 IFM_SUBTYPE(media) == IFM_100_FX) { 807 dmsg = "full"; 808 XL_SEL_WIN(3); 809 CSR_WRITE_1(sc, XL_W3_MAC_CTRL, XL_MACCTRL_DUPLEX); 810 } else { 811 dmsg = "half"; 812 XL_SEL_WIN(3); 813 CSR_WRITE_1(sc, XL_W3_MAC_CTRL, 814 (CSR_READ_1(sc, XL_W3_MAC_CTRL) & ~XL_MACCTRL_DUPLEX)); 815 } 816 817 if (IFM_SUBTYPE(media) == IFM_10_2) 818 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_START); 819 else 820 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); 821 822 CSR_WRITE_4(sc, XL_W3_INTERNAL_CFG, icfg); 823 XL_SEL_WIN(4); 824 CSR_WRITE_2(sc, XL_W4_MEDIA_STATUS, mediastat); 825 826 DELAY(800); 827 XL_SEL_WIN(7); 828 829 device_printf(sc->xl_dev, "selecting %s, %s duplex\n", pmsg, dmsg); 830 } 831 832 static void 833 xl_reset(struct xl_softc *sc) 834 { 835 int i; 836 837 XL_LOCK_ASSERT(sc); 838 839 XL_SEL_WIN(0); 840 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RESET | 841 ((sc->xl_flags & XL_FLAG_WEIRDRESET) ? 842 XL_RESETOPT_DISADVFD:0)); 843 844 /* 845 * If we're using memory mapped register mode, pause briefly 846 * after issuing the reset command before trying to access any 847 * other registers. With my 3c575C CardBus card, failing to do 848 * this results in the system locking up while trying to poll 849 * the command busy bit in the status register. 850 */ 851 if (sc->xl_flags & XL_FLAG_USE_MMIO) 852 DELAY(100000); 853 854 for (i = 0; i < XL_TIMEOUT; i++) { 855 DELAY(10); 856 if (!(CSR_READ_2(sc, XL_STATUS) & XL_STAT_CMDBUSY)) 857 break; 858 } 859 860 if (i == XL_TIMEOUT) 861 device_printf(sc->xl_dev, "reset didn't complete\n"); 862 863 /* Reset TX and RX. */ 864 /* Note: the RX reset takes an absurd amount of time 865 * on newer versions of the Tornado chips such as those 866 * on the 3c905CX and newer 3c908C cards. We wait an 867 * extra amount of time so that xl_wait() doesn't complain 868 * and annoy the users. 869 */ 870 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); 871 DELAY(100000); 872 xl_wait(sc); 873 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); 874 xl_wait(sc); 875 876 if (sc->xl_flags & XL_FLAG_INVERT_LED_PWR || 877 sc->xl_flags & XL_FLAG_INVERT_MII_PWR) { 878 XL_SEL_WIN(2); 879 CSR_WRITE_2(sc, XL_W2_RESET_OPTIONS, 880 CSR_READ_2(sc, XL_W2_RESET_OPTIONS) | 881 ((sc->xl_flags & XL_FLAG_INVERT_LED_PWR) ? 882 XL_RESETOPT_INVERT_LED : 0) | 883 ((sc->xl_flags & XL_FLAG_INVERT_MII_PWR) ? 884 XL_RESETOPT_INVERT_MII : 0)); 885 } 886 887 /* Wait a little while for the chip to get its brains in order. */ 888 DELAY(100000); 889 } 890 891 /* 892 * Probe for a 3Com Etherlink XL chip. Check the PCI vendor and device 893 * IDs against our list and return a device name if we find a match. 894 */ 895 static int 896 xl_probe(device_t dev) 897 { 898 const struct xl_type *t; 899 900 t = xl_devs; 901 902 while (t->xl_name != NULL) { 903 if ((pci_get_vendor(dev) == t->xl_vid) && 904 (pci_get_device(dev) == t->xl_did)) { 905 device_set_desc(dev, t->xl_name); 906 return (BUS_PROBE_DEFAULT); 907 } 908 t++; 909 } 910 911 return (ENXIO); 912 } 913 914 /* 915 * This routine is a kludge to work around possible hardware faults 916 * or manufacturing defects that can cause the media options register 917 * (or reset options register, as it's called for the first generation 918 * 3c90x adapters) to return an incorrect result. I have encountered 919 * one Dell Latitude laptop docking station with an integrated 3c905-TX 920 * which doesn't have any of the 'mediaopt' bits set. This screws up 921 * the attach routine pretty badly because it doesn't know what media 922 * to look for. If we find ourselves in this predicament, this routine 923 * will try to guess the media options values and warn the user of a 924 * possible manufacturing defect with his adapter/system/whatever. 925 */ 926 static void 927 xl_mediacheck(struct xl_softc *sc) 928 { 929 930 /* 931 * If some of the media options bits are set, assume they are 932 * correct. If not, try to figure it out down below. 933 * XXX I should check for 10baseFL, but I don't have an adapter 934 * to test with. 935 */ 936 if (sc->xl_media & (XL_MEDIAOPT_MASK & ~XL_MEDIAOPT_VCO)) { 937 /* 938 * Check the XCVR value. If it's not in the normal range 939 * of values, we need to fake it up here. 940 */ 941 if (sc->xl_xcvr <= XL_XCVR_AUTO) 942 return; 943 else { 944 device_printf(sc->xl_dev, 945 "bogus xcvr value in EEPROM (%x)\n", sc->xl_xcvr); 946 device_printf(sc->xl_dev, 947 "choosing new default based on card type\n"); 948 } 949 } else { 950 if (sc->xl_type == XL_TYPE_905B && 951 sc->xl_media & XL_MEDIAOPT_10FL) 952 return; 953 device_printf(sc->xl_dev, 954 "WARNING: no media options bits set in the media options register!!\n"); 955 device_printf(sc->xl_dev, 956 "this could be a manufacturing defect in your adapter or system\n"); 957 device_printf(sc->xl_dev, 958 "attempting to guess media type; you should probably consult your vendor\n"); 959 } 960 961 xl_choose_xcvr(sc, 1); 962 } 963 964 static void 965 xl_choose_xcvr(struct xl_softc *sc, int verbose) 966 { 967 u_int16_t devid; 968 969 /* 970 * Read the device ID from the EEPROM. 971 * This is what's loaded into the PCI device ID register, so it has 972 * to be correct otherwise we wouldn't have gotten this far. 973 */ 974 xl_read_eeprom(sc, (caddr_t)&devid, XL_EE_PRODID, 1, 0); 975 976 switch (devid) { 977 case TC_DEVICEID_BOOMERANG_10BT: /* 3c900-TPO */ 978 case TC_DEVICEID_KRAKATOA_10BT: /* 3c900B-TPO */ 979 sc->xl_media = XL_MEDIAOPT_BT; 980 sc->xl_xcvr = XL_XCVR_10BT; 981 if (verbose) 982 device_printf(sc->xl_dev, 983 "guessing 10BaseT transceiver\n"); 984 break; 985 case TC_DEVICEID_BOOMERANG_10BT_COMBO: /* 3c900-COMBO */ 986 case TC_DEVICEID_KRAKATOA_10BT_COMBO: /* 3c900B-COMBO */ 987 sc->xl_media = XL_MEDIAOPT_BT|XL_MEDIAOPT_BNC|XL_MEDIAOPT_AUI; 988 sc->xl_xcvr = XL_XCVR_10BT; 989 if (verbose) 990 device_printf(sc->xl_dev, 991 "guessing COMBO (AUI/BNC/TP)\n"); 992 break; 993 case TC_DEVICEID_KRAKATOA_10BT_TPC: /* 3c900B-TPC */ 994 sc->xl_media = XL_MEDIAOPT_BT|XL_MEDIAOPT_BNC; 995 sc->xl_xcvr = XL_XCVR_10BT; 996 if (verbose) 997 device_printf(sc->xl_dev, "guessing TPC (BNC/TP)\n"); 998 break; 999 case TC_DEVICEID_CYCLONE_10FL: /* 3c900B-FL */ 1000 sc->xl_media = XL_MEDIAOPT_10FL; 1001 sc->xl_xcvr = XL_XCVR_AUI; 1002 if (verbose) 1003 device_printf(sc->xl_dev, "guessing 10baseFL\n"); 1004 break; 1005 case TC_DEVICEID_BOOMERANG_10_100BT: /* 3c905-TX */ 1006 case TC_DEVICEID_HURRICANE_555: /* 3c555 */ 1007 case TC_DEVICEID_HURRICANE_556: /* 3c556 */ 1008 case TC_DEVICEID_HURRICANE_556B: /* 3c556B */ 1009 case TC_DEVICEID_HURRICANE_575A: /* 3c575TX */ 1010 case TC_DEVICEID_HURRICANE_575B: /* 3c575B */ 1011 case TC_DEVICEID_HURRICANE_575C: /* 3c575C */ 1012 case TC_DEVICEID_HURRICANE_656: /* 3c656 */ 1013 case TC_DEVICEID_HURRICANE_656B: /* 3c656B */ 1014 case TC_DEVICEID_TORNADO_656C: /* 3c656C */ 1015 case TC_DEVICEID_TORNADO_10_100BT_920B: /* 3c920B-EMB */ 1016 case TC_DEVICEID_TORNADO_10_100BT_920B_WNM: /* 3c920B-EMB-WNM */ 1017 sc->xl_media = XL_MEDIAOPT_MII; 1018 sc->xl_xcvr = XL_XCVR_MII; 1019 if (verbose) 1020 device_printf(sc->xl_dev, "guessing MII\n"); 1021 break; 1022 case TC_DEVICEID_BOOMERANG_100BT4: /* 3c905-T4 */ 1023 case TC_DEVICEID_CYCLONE_10_100BT4: /* 3c905B-T4 */ 1024 sc->xl_media = XL_MEDIAOPT_BT4; 1025 sc->xl_xcvr = XL_XCVR_MII; 1026 if (verbose) 1027 device_printf(sc->xl_dev, "guessing 100baseT4/MII\n"); 1028 break; 1029 case TC_DEVICEID_HURRICANE_10_100BT: /* 3c905B-TX */ 1030 case TC_DEVICEID_HURRICANE_10_100BT_SERV:/*3c980-TX */ 1031 case TC_DEVICEID_TORNADO_10_100BT_SERV: /* 3c980C-TX */ 1032 case TC_DEVICEID_HURRICANE_SOHO100TX: /* 3cSOHO100-TX */ 1033 case TC_DEVICEID_TORNADO_10_100BT: /* 3c905C-TX */ 1034 case TC_DEVICEID_TORNADO_HOMECONNECT: /* 3c450-TX */ 1035 sc->xl_media = XL_MEDIAOPT_BTX; 1036 sc->xl_xcvr = XL_XCVR_AUTO; 1037 if (verbose) 1038 device_printf(sc->xl_dev, "guessing 10/100 internal\n"); 1039 break; 1040 case TC_DEVICEID_CYCLONE_10_100_COMBO: /* 3c905B-COMBO */ 1041 sc->xl_media = XL_MEDIAOPT_BTX|XL_MEDIAOPT_BNC|XL_MEDIAOPT_AUI; 1042 sc->xl_xcvr = XL_XCVR_AUTO; 1043 if (verbose) 1044 device_printf(sc->xl_dev, 1045 "guessing 10/100 plus BNC/AUI\n"); 1046 break; 1047 default: 1048 device_printf(sc->xl_dev, 1049 "unknown device ID: %x -- defaulting to 10baseT\n", devid); 1050 sc->xl_media = XL_MEDIAOPT_BT; 1051 break; 1052 } 1053 } 1054 1055 /* 1056 * Attach the interface. Allocate softc structures, do ifmedia 1057 * setup and ethernet/BPF attach. 1058 */ 1059 static int 1060 xl_attach(device_t dev) 1061 { 1062 u_char eaddr[ETHER_ADDR_LEN]; 1063 u_int16_t sinfo2, xcvr[2]; 1064 struct xl_softc *sc; 1065 if_t ifp; 1066 int media; 1067 int error = 0, phy, rid, res; 1068 uint16_t did; 1069 1070 sc = device_get_softc(dev); 1071 sc->xl_dev = dev; 1072 1073 mtx_init(&sc->xl_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 1074 MTX_DEF); 1075 ifmedia_init(&sc->ifmedia, 0, xl_ifmedia_upd, xl_ifmedia_sts); 1076 1077 did = pci_get_device(dev); 1078 1079 sc->xl_flags = 0; 1080 if (did == TC_DEVICEID_HURRICANE_555) 1081 sc->xl_flags |= XL_FLAG_EEPROM_OFFSET_30 | XL_FLAG_PHYOK; 1082 if (did == TC_DEVICEID_HURRICANE_556 || 1083 did == TC_DEVICEID_HURRICANE_556B) 1084 sc->xl_flags |= XL_FLAG_FUNCREG | XL_FLAG_PHYOK | 1085 XL_FLAG_EEPROM_OFFSET_30 | XL_FLAG_WEIRDRESET | 1086 XL_FLAG_INVERT_LED_PWR | XL_FLAG_INVERT_MII_PWR; 1087 if (did == TC_DEVICEID_HURRICANE_555 || 1088 did == TC_DEVICEID_HURRICANE_556) 1089 sc->xl_flags |= XL_FLAG_8BITROM; 1090 if (did == TC_DEVICEID_HURRICANE_556B) 1091 sc->xl_flags |= XL_FLAG_NO_XCVR_PWR; 1092 1093 if (did == TC_DEVICEID_HURRICANE_575B || 1094 did == TC_DEVICEID_HURRICANE_575C || 1095 did == TC_DEVICEID_HURRICANE_656B || 1096 did == TC_DEVICEID_TORNADO_656C) 1097 sc->xl_flags |= XL_FLAG_FUNCREG; 1098 if (did == TC_DEVICEID_HURRICANE_575A || 1099 did == TC_DEVICEID_HURRICANE_575B || 1100 did == TC_DEVICEID_HURRICANE_575C || 1101 did == TC_DEVICEID_HURRICANE_656B || 1102 did == TC_DEVICEID_TORNADO_656C) 1103 sc->xl_flags |= XL_FLAG_PHYOK | XL_FLAG_EEPROM_OFFSET_30 | 1104 XL_FLAG_8BITROM; 1105 if (did == TC_DEVICEID_HURRICANE_656) 1106 sc->xl_flags |= XL_FLAG_FUNCREG | XL_FLAG_PHYOK; 1107 if (did == TC_DEVICEID_HURRICANE_575B) 1108 sc->xl_flags |= XL_FLAG_INVERT_LED_PWR; 1109 if (did == TC_DEVICEID_HURRICANE_575C) 1110 sc->xl_flags |= XL_FLAG_INVERT_MII_PWR; 1111 if (did == TC_DEVICEID_TORNADO_656C) 1112 sc->xl_flags |= XL_FLAG_INVERT_MII_PWR; 1113 if (did == TC_DEVICEID_HURRICANE_656 || 1114 did == TC_DEVICEID_HURRICANE_656B) 1115 sc->xl_flags |= XL_FLAG_INVERT_MII_PWR | 1116 XL_FLAG_INVERT_LED_PWR; 1117 if (did == TC_DEVICEID_TORNADO_10_100BT_920B || 1118 did == TC_DEVICEID_TORNADO_10_100BT_920B_WNM) 1119 sc->xl_flags |= XL_FLAG_PHYOK; 1120 1121 switch (did) { 1122 case TC_DEVICEID_BOOMERANG_10_100BT: /* 3c905-TX */ 1123 case TC_DEVICEID_HURRICANE_575A: 1124 case TC_DEVICEID_HURRICANE_575B: 1125 case TC_DEVICEID_HURRICANE_575C: 1126 sc->xl_flags |= XL_FLAG_NO_MMIO; 1127 break; 1128 default: 1129 break; 1130 } 1131 1132 /* 1133 * Map control/status registers. 1134 */ 1135 pci_enable_busmaster(dev); 1136 1137 if ((sc->xl_flags & XL_FLAG_NO_MMIO) == 0) { 1138 rid = XL_PCI_LOMEM; 1139 res = SYS_RES_MEMORY; 1140 1141 sc->xl_res = bus_alloc_resource_any(dev, res, &rid, RF_ACTIVE); 1142 } 1143 1144 if (sc->xl_res != NULL) { 1145 sc->xl_flags |= XL_FLAG_USE_MMIO; 1146 if (bootverbose) 1147 device_printf(dev, "using memory mapped I/O\n"); 1148 } else { 1149 rid = XL_PCI_LOIO; 1150 res = SYS_RES_IOPORT; 1151 sc->xl_res = bus_alloc_resource_any(dev, res, &rid, RF_ACTIVE); 1152 if (sc->xl_res == NULL) { 1153 device_printf(dev, "couldn't map ports/memory\n"); 1154 error = ENXIO; 1155 goto fail; 1156 } 1157 if (bootverbose) 1158 device_printf(dev, "using port I/O\n"); 1159 } 1160 1161 sc->xl_btag = rman_get_bustag(sc->xl_res); 1162 sc->xl_bhandle = rman_get_bushandle(sc->xl_res); 1163 1164 if (sc->xl_flags & XL_FLAG_FUNCREG) { 1165 rid = XL_PCI_FUNCMEM; 1166 sc->xl_fres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 1167 RF_ACTIVE); 1168 1169 if (sc->xl_fres == NULL) { 1170 device_printf(dev, "couldn't map funcreg memory\n"); 1171 error = ENXIO; 1172 goto fail; 1173 } 1174 1175 sc->xl_ftag = rman_get_bustag(sc->xl_fres); 1176 sc->xl_fhandle = rman_get_bushandle(sc->xl_fres); 1177 } 1178 1179 /* Allocate interrupt */ 1180 rid = 0; 1181 sc->xl_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 1182 RF_SHAREABLE | RF_ACTIVE); 1183 if (sc->xl_irq == NULL) { 1184 device_printf(dev, "couldn't map interrupt\n"); 1185 error = ENXIO; 1186 goto fail; 1187 } 1188 1189 /* Initialize interface name. */ 1190 ifp = sc->xl_ifp = if_alloc(IFT_ETHER); 1191 if_setsoftc(ifp, sc); 1192 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 1193 1194 /* Reset the adapter. */ 1195 XL_LOCK(sc); 1196 xl_reset(sc); 1197 XL_UNLOCK(sc); 1198 1199 /* 1200 * Get station address from the EEPROM. 1201 */ 1202 if (xl_read_eeprom(sc, (caddr_t)&eaddr, XL_EE_OEM_ADR0, 3, 1)) { 1203 device_printf(dev, "failed to read station address\n"); 1204 error = ENXIO; 1205 goto fail; 1206 } 1207 1208 callout_init_mtx(&sc->xl_tick_callout, &sc->xl_mtx, 0); 1209 NET_TASK_INIT(&sc->xl_task, 0, xl_rxeof_task, sc); 1210 1211 /* 1212 * Now allocate a tag for the DMA descriptor lists and a chunk 1213 * of DMA-able memory based on the tag. Also obtain the DMA 1214 * addresses of the RX and TX ring, which we'll need later. 1215 * All of our lists are allocated as a contiguous block 1216 * of memory. 1217 */ 1218 error = bus_dma_tag_create(bus_get_dma_tag(dev), 8, 0, 1219 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 1220 XL_RX_LIST_SZ, 1, XL_RX_LIST_SZ, 0, NULL, NULL, 1221 &sc->xl_ldata.xl_rx_tag); 1222 if (error) { 1223 device_printf(dev, "failed to allocate rx dma tag\n"); 1224 goto fail; 1225 } 1226 1227 error = bus_dmamem_alloc(sc->xl_ldata.xl_rx_tag, 1228 (void **)&sc->xl_ldata.xl_rx_list, BUS_DMA_NOWAIT | 1229 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->xl_ldata.xl_rx_dmamap); 1230 if (error) { 1231 device_printf(dev, "no memory for rx list buffers!\n"); 1232 bus_dma_tag_destroy(sc->xl_ldata.xl_rx_tag); 1233 sc->xl_ldata.xl_rx_tag = NULL; 1234 goto fail; 1235 } 1236 1237 error = bus_dmamap_load(sc->xl_ldata.xl_rx_tag, 1238 sc->xl_ldata.xl_rx_dmamap, sc->xl_ldata.xl_rx_list, 1239 XL_RX_LIST_SZ, xl_dma_map_addr, 1240 &sc->xl_ldata.xl_rx_dmaaddr, BUS_DMA_NOWAIT); 1241 if (error) { 1242 device_printf(dev, "cannot get dma address of the rx ring!\n"); 1243 bus_dmamem_free(sc->xl_ldata.xl_rx_tag, sc->xl_ldata.xl_rx_list, 1244 sc->xl_ldata.xl_rx_dmamap); 1245 bus_dma_tag_destroy(sc->xl_ldata.xl_rx_tag); 1246 sc->xl_ldata.xl_rx_tag = NULL; 1247 goto fail; 1248 } 1249 1250 error = bus_dma_tag_create(bus_get_dma_tag(dev), 8, 0, 1251 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 1252 XL_TX_LIST_SZ, 1, XL_TX_LIST_SZ, 0, NULL, NULL, 1253 &sc->xl_ldata.xl_tx_tag); 1254 if (error) { 1255 device_printf(dev, "failed to allocate tx dma tag\n"); 1256 goto fail; 1257 } 1258 1259 error = bus_dmamem_alloc(sc->xl_ldata.xl_tx_tag, 1260 (void **)&sc->xl_ldata.xl_tx_list, BUS_DMA_NOWAIT | 1261 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->xl_ldata.xl_tx_dmamap); 1262 if (error) { 1263 device_printf(dev, "no memory for list buffers!\n"); 1264 bus_dma_tag_destroy(sc->xl_ldata.xl_tx_tag); 1265 sc->xl_ldata.xl_tx_tag = NULL; 1266 goto fail; 1267 } 1268 1269 error = bus_dmamap_load(sc->xl_ldata.xl_tx_tag, 1270 sc->xl_ldata.xl_tx_dmamap, sc->xl_ldata.xl_tx_list, 1271 XL_TX_LIST_SZ, xl_dma_map_addr, 1272 &sc->xl_ldata.xl_tx_dmaaddr, BUS_DMA_NOWAIT); 1273 if (error) { 1274 device_printf(dev, "cannot get dma address of the tx ring!\n"); 1275 bus_dmamem_free(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_list, 1276 sc->xl_ldata.xl_tx_dmamap); 1277 bus_dma_tag_destroy(sc->xl_ldata.xl_tx_tag); 1278 sc->xl_ldata.xl_tx_tag = NULL; 1279 goto fail; 1280 } 1281 1282 /* 1283 * Allocate a DMA tag for the mapping of mbufs. 1284 */ 1285 error = bus_dma_tag_create(bus_get_dma_tag(dev), 1, 0, 1286 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 1287 MCLBYTES * XL_MAXFRAGS, XL_MAXFRAGS, MCLBYTES, 0, NULL, 1288 NULL, &sc->xl_mtag); 1289 if (error) { 1290 device_printf(dev, "failed to allocate mbuf dma tag\n"); 1291 goto fail; 1292 } 1293 1294 /* We need a spare DMA map for the RX ring. */ 1295 error = bus_dmamap_create(sc->xl_mtag, 0, &sc->xl_tmpmap); 1296 if (error) 1297 goto fail; 1298 1299 /* 1300 * Figure out the card type. 3c905B adapters have the 1301 * 'supportsNoTxLength' bit set in the capabilities 1302 * word in the EEPROM. 1303 * Note: my 3c575C CardBus card lies. It returns a value 1304 * of 0x1578 for its capabilities word, which is somewhat 1305 * nonsensical. Another way to distinguish a 3c90x chip 1306 * from a 3c90xB/C chip is to check for the 'supportsLargePackets' 1307 * bit. This will only be set for 3c90x boomerage chips. 1308 */ 1309 xl_read_eeprom(sc, (caddr_t)&sc->xl_caps, XL_EE_CAPS, 1, 0); 1310 if (sc->xl_caps & XL_CAPS_NO_TXLENGTH || 1311 !(sc->xl_caps & XL_CAPS_LARGE_PKTS)) 1312 sc->xl_type = XL_TYPE_905B; 1313 else 1314 sc->xl_type = XL_TYPE_90X; 1315 1316 /* Check availability of WOL. */ 1317 if ((sc->xl_caps & XL_CAPS_PWRMGMT) != 0 && pci_has_pm(dev)) { 1318 sc->xl_flags |= XL_FLAG_WOL; 1319 sinfo2 = 0; 1320 xl_read_eeprom(sc, (caddr_t)&sinfo2, XL_EE_SOFTINFO2, 1, 0); 1321 if ((sinfo2 & XL_SINFO2_AUX_WOL_CON) == 0 && bootverbose) 1322 device_printf(dev, 1323 "No auxiliary remote wakeup connector!\n"); 1324 } 1325 1326 /* Set the TX start threshold for best performance. */ 1327 sc->xl_tx_thresh = XL_MIN_FRAMELEN; 1328 1329 if_setflags(ifp, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 1330 if_setioctlfn(ifp, xl_ioctl); 1331 if_setcapabilities(ifp, IFCAP_VLAN_MTU); 1332 if (sc->xl_type == XL_TYPE_905B) { 1333 if_sethwassist(ifp, XL905B_CSUM_FEATURES); 1334 #ifdef XL905B_TXCSUM_BROKEN 1335 if_setcapabilitiesbit(ifp, IFCAP_RXCSUM, 0); 1336 #else 1337 if_setcapabilitiesbit(ifp, IFCAP_HWCSUM, 0); 1338 #endif 1339 } 1340 if ((sc->xl_flags & XL_FLAG_WOL) != 0) 1341 if_setcapabilitiesbit(ifp, IFCAP_WOL_MAGIC, 0); 1342 if_setcapenable(ifp, if_getcapabilities(ifp)); 1343 #ifdef DEVICE_POLLING 1344 if_setcapabilitiesbit(ifp, IFCAP_POLLING, 0); 1345 #endif 1346 if_setstartfn(ifp, xl_start); 1347 if_setinitfn(ifp, xl_init); 1348 if_setsendqlen(ifp, XL_TX_LIST_CNT - 1); 1349 if_setsendqready(ifp); 1350 1351 /* 1352 * Now we have to see what sort of media we have. 1353 * This includes probing for an MII interace and a 1354 * possible PHY. 1355 */ 1356 XL_SEL_WIN(3); 1357 sc->xl_media = CSR_READ_2(sc, XL_W3_MEDIA_OPT); 1358 if (bootverbose) 1359 device_printf(dev, "media options word: %x\n", sc->xl_media); 1360 1361 xl_read_eeprom(sc, (char *)&xcvr, XL_EE_ICFG_0, 2, 0); 1362 sc->xl_xcvr = xcvr[0] | xcvr[1] << 16; 1363 sc->xl_xcvr &= XL_ICFG_CONNECTOR_MASK; 1364 sc->xl_xcvr >>= XL_ICFG_CONNECTOR_BITS; 1365 1366 xl_mediacheck(sc); 1367 1368 if (sc->xl_media & XL_MEDIAOPT_MII || 1369 sc->xl_media & XL_MEDIAOPT_BTX || 1370 sc->xl_media & XL_MEDIAOPT_BT4) { 1371 if (bootverbose) 1372 device_printf(dev, "found MII/AUTO\n"); 1373 xl_setcfg(sc); 1374 /* 1375 * Attach PHYs only at MII address 24 if !XL_FLAG_PHYOK. 1376 * This is to guard against problems with certain 3Com ASIC 1377 * revisions that incorrectly map the internal transceiver 1378 * control registers at all MII addresses. 1379 */ 1380 phy = MII_PHY_ANY; 1381 if ((sc->xl_flags & XL_FLAG_PHYOK) == 0) 1382 phy = 24; 1383 error = mii_attach(dev, &sc->xl_miibus, ifp, xl_ifmedia_upd, 1384 xl_ifmedia_sts, BMSR_DEFCAPMASK, phy, MII_OFFSET_ANY, 1385 sc->xl_type == XL_TYPE_905B ? MIIF_DOPAUSE : 0); 1386 if (error != 0) { 1387 device_printf(dev, "attaching PHYs failed\n"); 1388 goto fail; 1389 } 1390 goto done; 1391 } 1392 1393 /* 1394 * Sanity check. If the user has selected "auto" and this isn't 1395 * a 10/100 card of some kind, we need to force the transceiver 1396 * type to something sane. 1397 */ 1398 if (sc->xl_xcvr == XL_XCVR_AUTO) 1399 xl_choose_xcvr(sc, bootverbose); 1400 1401 /* 1402 * Do ifmedia setup. 1403 */ 1404 if (sc->xl_media & XL_MEDIAOPT_BT) { 1405 if (bootverbose) 1406 device_printf(dev, "found 10baseT\n"); 1407 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL); 1408 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); 1409 if (sc->xl_caps & XL_CAPS_FULL_DUPLEX) 1410 ifmedia_add(&sc->ifmedia, 1411 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); 1412 } 1413 1414 if (sc->xl_media & (XL_MEDIAOPT_AUI|XL_MEDIAOPT_10FL)) { 1415 /* 1416 * Check for a 10baseFL board in disguise. 1417 */ 1418 if (sc->xl_type == XL_TYPE_905B && 1419 sc->xl_media == XL_MEDIAOPT_10FL) { 1420 if (bootverbose) 1421 device_printf(dev, "found 10baseFL\n"); 1422 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_FL, 0, NULL); 1423 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_FL|IFM_HDX, 1424 0, NULL); 1425 if (sc->xl_caps & XL_CAPS_FULL_DUPLEX) 1426 ifmedia_add(&sc->ifmedia, 1427 IFM_ETHER|IFM_10_FL|IFM_FDX, 0, NULL); 1428 } else { 1429 if (bootverbose) 1430 device_printf(dev, "found AUI\n"); 1431 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_5, 0, NULL); 1432 } 1433 } 1434 1435 if (sc->xl_media & XL_MEDIAOPT_BNC) { 1436 if (bootverbose) 1437 device_printf(dev, "found BNC\n"); 1438 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_2, 0, NULL); 1439 } 1440 1441 if (sc->xl_media & XL_MEDIAOPT_BFX) { 1442 if (bootverbose) 1443 device_printf(dev, "found 100baseFX\n"); 1444 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_FX, 0, NULL); 1445 } 1446 1447 media = IFM_ETHER|IFM_100_TX|IFM_FDX; 1448 xl_choose_media(sc, &media); 1449 1450 if (sc->xl_miibus == NULL) 1451 ifmedia_set(&sc->ifmedia, media); 1452 1453 done: 1454 if (sc->xl_flags & XL_FLAG_NO_XCVR_PWR) { 1455 XL_SEL_WIN(0); 1456 CSR_WRITE_2(sc, XL_W0_MFG_ID, XL_NO_XCVR_PWR_MAGICBITS); 1457 } 1458 1459 /* 1460 * Call MI attach routine. 1461 */ 1462 ether_ifattach(ifp, eaddr); 1463 1464 error = bus_setup_intr(dev, sc->xl_irq, INTR_TYPE_NET | INTR_MPSAFE, 1465 NULL, xl_intr, sc, &sc->xl_intrhand); 1466 if (error) { 1467 device_printf(dev, "couldn't set up irq\n"); 1468 ether_ifdetach(ifp); 1469 goto fail; 1470 } 1471 1472 fail: 1473 if (error) 1474 xl_detach(dev); 1475 1476 return (error); 1477 } 1478 1479 /* 1480 * Choose a default media. 1481 * XXX This is a leaf function only called by xl_attach() and 1482 * acquires/releases the non-recursible driver mutex to 1483 * satisfy lock assertions. 1484 */ 1485 static void 1486 xl_choose_media(struct xl_softc *sc, int *media) 1487 { 1488 1489 XL_LOCK(sc); 1490 1491 switch (sc->xl_xcvr) { 1492 case XL_XCVR_10BT: 1493 *media = IFM_ETHER|IFM_10_T; 1494 xl_setmode(sc, *media); 1495 break; 1496 case XL_XCVR_AUI: 1497 if (sc->xl_type == XL_TYPE_905B && 1498 sc->xl_media == XL_MEDIAOPT_10FL) { 1499 *media = IFM_ETHER|IFM_10_FL; 1500 xl_setmode(sc, *media); 1501 } else { 1502 *media = IFM_ETHER|IFM_10_5; 1503 xl_setmode(sc, *media); 1504 } 1505 break; 1506 case XL_XCVR_COAX: 1507 *media = IFM_ETHER|IFM_10_2; 1508 xl_setmode(sc, *media); 1509 break; 1510 case XL_XCVR_AUTO: 1511 case XL_XCVR_100BTX: 1512 case XL_XCVR_MII: 1513 /* Chosen by miibus */ 1514 break; 1515 case XL_XCVR_100BFX: 1516 *media = IFM_ETHER|IFM_100_FX; 1517 break; 1518 default: 1519 device_printf(sc->xl_dev, "unknown XCVR type: %d\n", 1520 sc->xl_xcvr); 1521 /* 1522 * This will probably be wrong, but it prevents 1523 * the ifmedia code from panicking. 1524 */ 1525 *media = IFM_ETHER|IFM_10_T; 1526 break; 1527 } 1528 1529 XL_UNLOCK(sc); 1530 } 1531 1532 /* 1533 * Shutdown hardware and free up resources. This can be called any 1534 * time after the mutex has been initialized. It is called in both 1535 * the error case in attach and the normal detach case so it needs 1536 * to be careful about only freeing resources that have actually been 1537 * allocated. 1538 */ 1539 static int 1540 xl_detach(device_t dev) 1541 { 1542 struct xl_softc *sc; 1543 if_t ifp; 1544 int rid, res; 1545 1546 sc = device_get_softc(dev); 1547 ifp = sc->xl_ifp; 1548 1549 KASSERT(mtx_initialized(&sc->xl_mtx), ("xl mutex not initialized")); 1550 1551 #ifdef DEVICE_POLLING 1552 if (ifp && if_getcapenable(ifp) & IFCAP_POLLING) 1553 ether_poll_deregister(ifp); 1554 #endif 1555 1556 if (sc->xl_flags & XL_FLAG_USE_MMIO) { 1557 rid = XL_PCI_LOMEM; 1558 res = SYS_RES_MEMORY; 1559 } else { 1560 rid = XL_PCI_LOIO; 1561 res = SYS_RES_IOPORT; 1562 } 1563 1564 /* These should only be active if attach succeeded */ 1565 if (device_is_attached(dev)) { 1566 XL_LOCK(sc); 1567 xl_stop(sc); 1568 XL_UNLOCK(sc); 1569 taskqueue_drain(taskqueue_swi, &sc->xl_task); 1570 callout_drain(&sc->xl_tick_callout); 1571 ether_ifdetach(ifp); 1572 } 1573 bus_generic_detach(dev); 1574 ifmedia_removeall(&sc->ifmedia); 1575 1576 if (sc->xl_intrhand) 1577 bus_teardown_intr(dev, sc->xl_irq, sc->xl_intrhand); 1578 if (sc->xl_irq) 1579 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->xl_irq); 1580 if (sc->xl_fres != NULL) 1581 bus_release_resource(dev, SYS_RES_MEMORY, 1582 XL_PCI_FUNCMEM, sc->xl_fres); 1583 if (sc->xl_res) 1584 bus_release_resource(dev, res, rid, sc->xl_res); 1585 1586 if (ifp) 1587 if_free(ifp); 1588 1589 if (sc->xl_mtag) { 1590 bus_dmamap_destroy(sc->xl_mtag, sc->xl_tmpmap); 1591 bus_dma_tag_destroy(sc->xl_mtag); 1592 } 1593 if (sc->xl_ldata.xl_rx_tag) { 1594 bus_dmamap_unload(sc->xl_ldata.xl_rx_tag, 1595 sc->xl_ldata.xl_rx_dmamap); 1596 bus_dmamem_free(sc->xl_ldata.xl_rx_tag, sc->xl_ldata.xl_rx_list, 1597 sc->xl_ldata.xl_rx_dmamap); 1598 bus_dma_tag_destroy(sc->xl_ldata.xl_rx_tag); 1599 } 1600 if (sc->xl_ldata.xl_tx_tag) { 1601 bus_dmamap_unload(sc->xl_ldata.xl_tx_tag, 1602 sc->xl_ldata.xl_tx_dmamap); 1603 bus_dmamem_free(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_list, 1604 sc->xl_ldata.xl_tx_dmamap); 1605 bus_dma_tag_destroy(sc->xl_ldata.xl_tx_tag); 1606 } 1607 1608 mtx_destroy(&sc->xl_mtx); 1609 1610 return (0); 1611 } 1612 1613 /* 1614 * Initialize the transmit descriptors. 1615 */ 1616 static int 1617 xl_list_tx_init(struct xl_softc *sc) 1618 { 1619 struct xl_chain_data *cd; 1620 struct xl_list_data *ld; 1621 int error, i; 1622 1623 XL_LOCK_ASSERT(sc); 1624 1625 cd = &sc->xl_cdata; 1626 ld = &sc->xl_ldata; 1627 for (i = 0; i < XL_TX_LIST_CNT; i++) { 1628 cd->xl_tx_chain[i].xl_ptr = &ld->xl_tx_list[i]; 1629 error = bus_dmamap_create(sc->xl_mtag, 0, 1630 &cd->xl_tx_chain[i].xl_map); 1631 if (error) 1632 return (error); 1633 cd->xl_tx_chain[i].xl_phys = ld->xl_tx_dmaaddr + 1634 i * sizeof(struct xl_list); 1635 if (i == (XL_TX_LIST_CNT - 1)) 1636 cd->xl_tx_chain[i].xl_next = NULL; 1637 else 1638 cd->xl_tx_chain[i].xl_next = &cd->xl_tx_chain[i + 1]; 1639 } 1640 1641 cd->xl_tx_free = &cd->xl_tx_chain[0]; 1642 cd->xl_tx_tail = cd->xl_tx_head = NULL; 1643 1644 bus_dmamap_sync(ld->xl_tx_tag, ld->xl_tx_dmamap, BUS_DMASYNC_PREWRITE); 1645 return (0); 1646 } 1647 1648 /* 1649 * Initialize the transmit descriptors. 1650 */ 1651 static int 1652 xl_list_tx_init_90xB(struct xl_softc *sc) 1653 { 1654 struct xl_chain_data *cd; 1655 struct xl_list_data *ld; 1656 int error, i; 1657 1658 XL_LOCK_ASSERT(sc); 1659 1660 cd = &sc->xl_cdata; 1661 ld = &sc->xl_ldata; 1662 for (i = 0; i < XL_TX_LIST_CNT; i++) { 1663 cd->xl_tx_chain[i].xl_ptr = &ld->xl_tx_list[i]; 1664 error = bus_dmamap_create(sc->xl_mtag, 0, 1665 &cd->xl_tx_chain[i].xl_map); 1666 if (error) 1667 return (error); 1668 cd->xl_tx_chain[i].xl_phys = ld->xl_tx_dmaaddr + 1669 i * sizeof(struct xl_list); 1670 if (i == (XL_TX_LIST_CNT - 1)) 1671 cd->xl_tx_chain[i].xl_next = &cd->xl_tx_chain[0]; 1672 else 1673 cd->xl_tx_chain[i].xl_next = &cd->xl_tx_chain[i + 1]; 1674 if (i == 0) 1675 cd->xl_tx_chain[i].xl_prev = 1676 &cd->xl_tx_chain[XL_TX_LIST_CNT - 1]; 1677 else 1678 cd->xl_tx_chain[i].xl_prev = 1679 &cd->xl_tx_chain[i - 1]; 1680 } 1681 1682 bzero(ld->xl_tx_list, XL_TX_LIST_SZ); 1683 ld->xl_tx_list[0].xl_status = htole32(XL_TXSTAT_EMPTY); 1684 1685 cd->xl_tx_prod = 1; 1686 cd->xl_tx_cons = 1; 1687 cd->xl_tx_cnt = 0; 1688 1689 bus_dmamap_sync(ld->xl_tx_tag, ld->xl_tx_dmamap, BUS_DMASYNC_PREWRITE); 1690 return (0); 1691 } 1692 1693 /* 1694 * Initialize the RX descriptors and allocate mbufs for them. Note that 1695 * we arrange the descriptors in a closed ring, so that the last descriptor 1696 * points back to the first. 1697 */ 1698 static int 1699 xl_list_rx_init(struct xl_softc *sc) 1700 { 1701 struct xl_chain_data *cd; 1702 struct xl_list_data *ld; 1703 int error, i, next; 1704 u_int32_t nextptr; 1705 1706 XL_LOCK_ASSERT(sc); 1707 1708 cd = &sc->xl_cdata; 1709 ld = &sc->xl_ldata; 1710 1711 for (i = 0; i < XL_RX_LIST_CNT; i++) { 1712 cd->xl_rx_chain[i].xl_ptr = &ld->xl_rx_list[i]; 1713 error = bus_dmamap_create(sc->xl_mtag, 0, 1714 &cd->xl_rx_chain[i].xl_map); 1715 if (error) 1716 return (error); 1717 error = xl_newbuf(sc, &cd->xl_rx_chain[i]); 1718 if (error) 1719 return (error); 1720 if (i == (XL_RX_LIST_CNT - 1)) 1721 next = 0; 1722 else 1723 next = i + 1; 1724 nextptr = ld->xl_rx_dmaaddr + 1725 next * sizeof(struct xl_list_onefrag); 1726 cd->xl_rx_chain[i].xl_next = &cd->xl_rx_chain[next]; 1727 ld->xl_rx_list[i].xl_next = htole32(nextptr); 1728 } 1729 1730 bus_dmamap_sync(ld->xl_rx_tag, ld->xl_rx_dmamap, BUS_DMASYNC_PREWRITE); 1731 cd->xl_rx_head = &cd->xl_rx_chain[0]; 1732 1733 return (0); 1734 } 1735 1736 /* 1737 * Initialize an RX descriptor and attach an MBUF cluster. 1738 * If we fail to do so, we need to leave the old mbuf and 1739 * the old DMA map untouched so that it can be reused. 1740 */ 1741 static int 1742 xl_newbuf(struct xl_softc *sc, struct xl_chain_onefrag *c) 1743 { 1744 struct mbuf *m_new = NULL; 1745 bus_dmamap_t map; 1746 bus_dma_segment_t segs[1]; 1747 int error, nseg; 1748 1749 XL_LOCK_ASSERT(sc); 1750 1751 m_new = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1752 if (m_new == NULL) 1753 return (ENOBUFS); 1754 1755 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 1756 1757 /* Force longword alignment for packet payload. */ 1758 m_adj(m_new, ETHER_ALIGN); 1759 1760 error = bus_dmamap_load_mbuf_sg(sc->xl_mtag, sc->xl_tmpmap, m_new, 1761 segs, &nseg, BUS_DMA_NOWAIT); 1762 if (error) { 1763 m_freem(m_new); 1764 device_printf(sc->xl_dev, "can't map mbuf (error %d)\n", 1765 error); 1766 return (error); 1767 } 1768 KASSERT(nseg == 1, 1769 ("%s: too many DMA segments (%d)", __func__, nseg)); 1770 1771 bus_dmamap_unload(sc->xl_mtag, c->xl_map); 1772 map = c->xl_map; 1773 c->xl_map = sc->xl_tmpmap; 1774 sc->xl_tmpmap = map; 1775 c->xl_mbuf = m_new; 1776 c->xl_ptr->xl_frag.xl_len = htole32(m_new->m_len | XL_LAST_FRAG); 1777 c->xl_ptr->xl_frag.xl_addr = htole32(segs->ds_addr); 1778 c->xl_ptr->xl_status = 0; 1779 bus_dmamap_sync(sc->xl_mtag, c->xl_map, BUS_DMASYNC_PREREAD); 1780 return (0); 1781 } 1782 1783 static int 1784 xl_rx_resync(struct xl_softc *sc) 1785 { 1786 struct xl_chain_onefrag *pos; 1787 int i; 1788 1789 XL_LOCK_ASSERT(sc); 1790 1791 pos = sc->xl_cdata.xl_rx_head; 1792 1793 for (i = 0; i < XL_RX_LIST_CNT; i++) { 1794 if (pos->xl_ptr->xl_status) 1795 break; 1796 pos = pos->xl_next; 1797 } 1798 1799 if (i == XL_RX_LIST_CNT) 1800 return (0); 1801 1802 sc->xl_cdata.xl_rx_head = pos; 1803 1804 return (EAGAIN); 1805 } 1806 1807 /* 1808 * A frame has been uploaded: pass the resulting mbuf chain up to 1809 * the higher level protocols. 1810 */ 1811 static int 1812 xl_rxeof(struct xl_softc *sc) 1813 { 1814 struct mbuf *m; 1815 if_t ifp = sc->xl_ifp; 1816 struct xl_chain_onefrag *cur_rx; 1817 int total_len; 1818 int rx_npkts = 0; 1819 u_int32_t rxstat; 1820 1821 XL_LOCK_ASSERT(sc); 1822 again: 1823 bus_dmamap_sync(sc->xl_ldata.xl_rx_tag, sc->xl_ldata.xl_rx_dmamap, 1824 BUS_DMASYNC_POSTREAD); 1825 while ((rxstat = le32toh(sc->xl_cdata.xl_rx_head->xl_ptr->xl_status))) { 1826 #ifdef DEVICE_POLLING 1827 if (if_getcapenable(ifp) & IFCAP_POLLING) { 1828 if (sc->rxcycles <= 0) 1829 break; 1830 sc->rxcycles--; 1831 } 1832 #endif 1833 cur_rx = sc->xl_cdata.xl_rx_head; 1834 sc->xl_cdata.xl_rx_head = cur_rx->xl_next; 1835 total_len = rxstat & XL_RXSTAT_LENMASK; 1836 rx_npkts++; 1837 1838 /* 1839 * Since we have told the chip to allow large frames, 1840 * we need to trap giant frame errors in software. We allow 1841 * a little more than the normal frame size to account for 1842 * frames with VLAN tags. 1843 */ 1844 if (total_len > XL_MAX_FRAMELEN) 1845 rxstat |= (XL_RXSTAT_UP_ERROR|XL_RXSTAT_OVERSIZE); 1846 1847 /* 1848 * If an error occurs, update stats, clear the 1849 * status word and leave the mbuf cluster in place: 1850 * it should simply get re-used next time this descriptor 1851 * comes up in the ring. 1852 */ 1853 if (rxstat & XL_RXSTAT_UP_ERROR) { 1854 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1855 cur_rx->xl_ptr->xl_status = 0; 1856 bus_dmamap_sync(sc->xl_ldata.xl_rx_tag, 1857 sc->xl_ldata.xl_rx_dmamap, BUS_DMASYNC_PREWRITE); 1858 continue; 1859 } 1860 1861 /* 1862 * If the error bit was not set, the upload complete 1863 * bit should be set which means we have a valid packet. 1864 * If not, something truly strange has happened. 1865 */ 1866 if (!(rxstat & XL_RXSTAT_UP_CMPLT)) { 1867 device_printf(sc->xl_dev, 1868 "bad receive status -- packet dropped\n"); 1869 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1870 cur_rx->xl_ptr->xl_status = 0; 1871 bus_dmamap_sync(sc->xl_ldata.xl_rx_tag, 1872 sc->xl_ldata.xl_rx_dmamap, BUS_DMASYNC_PREWRITE); 1873 continue; 1874 } 1875 1876 /* No errors; receive the packet. */ 1877 bus_dmamap_sync(sc->xl_mtag, cur_rx->xl_map, 1878 BUS_DMASYNC_POSTREAD); 1879 m = cur_rx->xl_mbuf; 1880 1881 /* 1882 * Try to conjure up a new mbuf cluster. If that 1883 * fails, it means we have an out of memory condition and 1884 * should leave the buffer in place and continue. This will 1885 * result in a lost packet, but there's little else we 1886 * can do in this situation. 1887 */ 1888 if (xl_newbuf(sc, cur_rx)) { 1889 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1890 cur_rx->xl_ptr->xl_status = 0; 1891 bus_dmamap_sync(sc->xl_ldata.xl_rx_tag, 1892 sc->xl_ldata.xl_rx_dmamap, BUS_DMASYNC_PREWRITE); 1893 continue; 1894 } 1895 bus_dmamap_sync(sc->xl_ldata.xl_rx_tag, 1896 sc->xl_ldata.xl_rx_dmamap, BUS_DMASYNC_PREWRITE); 1897 1898 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); 1899 m->m_pkthdr.rcvif = ifp; 1900 m->m_pkthdr.len = m->m_len = total_len; 1901 1902 if (if_getcapenable(ifp) & IFCAP_RXCSUM) { 1903 /* Do IP checksum checking. */ 1904 if (rxstat & XL_RXSTAT_IPCKOK) 1905 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; 1906 if (!(rxstat & XL_RXSTAT_IPCKERR)) 1907 m->m_pkthdr.csum_flags |= CSUM_IP_VALID; 1908 if ((rxstat & XL_RXSTAT_TCPCOK && 1909 !(rxstat & XL_RXSTAT_TCPCKERR)) || 1910 (rxstat & XL_RXSTAT_UDPCKOK && 1911 !(rxstat & XL_RXSTAT_UDPCKERR))) { 1912 m->m_pkthdr.csum_flags |= 1913 CSUM_DATA_VALID|CSUM_PSEUDO_HDR; 1914 m->m_pkthdr.csum_data = 0xffff; 1915 } 1916 } 1917 1918 XL_UNLOCK(sc); 1919 if_input(ifp, m); 1920 XL_LOCK(sc); 1921 1922 /* 1923 * If we are running from the taskqueue, the interface 1924 * might have been stopped while we were passing the last 1925 * packet up the network stack. 1926 */ 1927 if (!(if_getdrvflags(ifp) & IFF_DRV_RUNNING)) 1928 return (rx_npkts); 1929 } 1930 1931 /* 1932 * Handle the 'end of channel' condition. When the upload 1933 * engine hits the end of the RX ring, it will stall. This 1934 * is our cue to flush the RX ring, reload the uplist pointer 1935 * register and unstall the engine. 1936 * XXX This is actually a little goofy. With the ThunderLAN 1937 * chip, you get an interrupt when the receiver hits the end 1938 * of the receive ring, which tells you exactly when you 1939 * you need to reload the ring pointer. Here we have to 1940 * fake it. I'm mad at myself for not being clever enough 1941 * to avoid the use of a goto here. 1942 */ 1943 if (CSR_READ_4(sc, XL_UPLIST_PTR) == 0 || 1944 CSR_READ_4(sc, XL_UPLIST_STATUS) & XL_PKTSTAT_UP_STALLED) { 1945 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_STALL); 1946 xl_wait(sc); 1947 CSR_WRITE_4(sc, XL_UPLIST_PTR, sc->xl_ldata.xl_rx_dmaaddr); 1948 sc->xl_cdata.xl_rx_head = &sc->xl_cdata.xl_rx_chain[0]; 1949 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_UNSTALL); 1950 goto again; 1951 } 1952 return (rx_npkts); 1953 } 1954 1955 /* 1956 * Taskqueue wrapper for xl_rxeof(). 1957 */ 1958 static void 1959 xl_rxeof_task(void *arg, int pending) 1960 { 1961 struct xl_softc *sc = (struct xl_softc *)arg; 1962 1963 XL_LOCK(sc); 1964 if (if_getdrvflags(sc->xl_ifp) & IFF_DRV_RUNNING) 1965 xl_rxeof(sc); 1966 XL_UNLOCK(sc); 1967 } 1968 1969 /* 1970 * A frame was downloaded to the chip. It's safe for us to clean up 1971 * the list buffers. 1972 */ 1973 static void 1974 xl_txeof(struct xl_softc *sc) 1975 { 1976 struct xl_chain *cur_tx; 1977 if_t ifp = sc->xl_ifp; 1978 1979 XL_LOCK_ASSERT(sc); 1980 1981 /* 1982 * Go through our tx list and free mbufs for those 1983 * frames that have been uploaded. Note: the 3c905B 1984 * sets a special bit in the status word to let us 1985 * know that a frame has been downloaded, but the 1986 * original 3c900/3c905 adapters don't do that. 1987 * Consequently, we have to use a different test if 1988 * xl_type != XL_TYPE_905B. 1989 */ 1990 while (sc->xl_cdata.xl_tx_head != NULL) { 1991 cur_tx = sc->xl_cdata.xl_tx_head; 1992 1993 if (CSR_READ_4(sc, XL_DOWNLIST_PTR)) 1994 break; 1995 1996 sc->xl_cdata.xl_tx_head = cur_tx->xl_next; 1997 bus_dmamap_sync(sc->xl_mtag, cur_tx->xl_map, 1998 BUS_DMASYNC_POSTWRITE); 1999 bus_dmamap_unload(sc->xl_mtag, cur_tx->xl_map); 2000 m_freem(cur_tx->xl_mbuf); 2001 cur_tx->xl_mbuf = NULL; 2002 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 2003 if_setdrvflagbits(ifp, 0, IFF_DRV_OACTIVE); 2004 2005 cur_tx->xl_next = sc->xl_cdata.xl_tx_free; 2006 sc->xl_cdata.xl_tx_free = cur_tx; 2007 } 2008 2009 if (sc->xl_cdata.xl_tx_head == NULL) { 2010 sc->xl_wdog_timer = 0; 2011 sc->xl_cdata.xl_tx_tail = NULL; 2012 } else { 2013 if (CSR_READ_4(sc, XL_DMACTL) & XL_DMACTL_DOWN_STALLED || 2014 !CSR_READ_4(sc, XL_DOWNLIST_PTR)) { 2015 CSR_WRITE_4(sc, XL_DOWNLIST_PTR, 2016 sc->xl_cdata.xl_tx_head->xl_phys); 2017 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); 2018 } 2019 } 2020 } 2021 2022 static void 2023 xl_txeof_90xB(struct xl_softc *sc) 2024 { 2025 struct xl_chain *cur_tx = NULL; 2026 if_t ifp = sc->xl_ifp; 2027 int idx; 2028 2029 XL_LOCK_ASSERT(sc); 2030 2031 bus_dmamap_sync(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_dmamap, 2032 BUS_DMASYNC_POSTREAD); 2033 idx = sc->xl_cdata.xl_tx_cons; 2034 while (idx != sc->xl_cdata.xl_tx_prod) { 2035 cur_tx = &sc->xl_cdata.xl_tx_chain[idx]; 2036 2037 if (!(le32toh(cur_tx->xl_ptr->xl_status) & 2038 XL_TXSTAT_DL_COMPLETE)) 2039 break; 2040 2041 if (cur_tx->xl_mbuf != NULL) { 2042 bus_dmamap_sync(sc->xl_mtag, cur_tx->xl_map, 2043 BUS_DMASYNC_POSTWRITE); 2044 bus_dmamap_unload(sc->xl_mtag, cur_tx->xl_map); 2045 m_freem(cur_tx->xl_mbuf); 2046 cur_tx->xl_mbuf = NULL; 2047 } 2048 2049 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 2050 2051 sc->xl_cdata.xl_tx_cnt--; 2052 XL_INC(idx, XL_TX_LIST_CNT); 2053 } 2054 2055 if (sc->xl_cdata.xl_tx_cnt == 0) 2056 sc->xl_wdog_timer = 0; 2057 sc->xl_cdata.xl_tx_cons = idx; 2058 2059 if (cur_tx != NULL) 2060 if_setdrvflagbits(ifp, 0, IFF_DRV_OACTIVE); 2061 } 2062 2063 /* 2064 * TX 'end of channel' interrupt handler. Actually, we should 2065 * only get a 'TX complete' interrupt if there's a transmit error, 2066 * so this is really TX error handler. 2067 */ 2068 static void 2069 xl_txeoc(struct xl_softc *sc) 2070 { 2071 u_int8_t txstat; 2072 2073 XL_LOCK_ASSERT(sc); 2074 2075 while ((txstat = CSR_READ_1(sc, XL_TX_STATUS))) { 2076 if (txstat & XL_TXSTATUS_UNDERRUN || 2077 txstat & XL_TXSTATUS_JABBER || 2078 txstat & XL_TXSTATUS_RECLAIM) { 2079 device_printf(sc->xl_dev, 2080 "transmission error: 0x%02x\n", txstat); 2081 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); 2082 xl_wait(sc); 2083 if (sc->xl_type == XL_TYPE_905B) { 2084 if (sc->xl_cdata.xl_tx_cnt) { 2085 int i; 2086 struct xl_chain *c; 2087 2088 i = sc->xl_cdata.xl_tx_cons; 2089 c = &sc->xl_cdata.xl_tx_chain[i]; 2090 CSR_WRITE_4(sc, XL_DOWNLIST_PTR, 2091 c->xl_phys); 2092 CSR_WRITE_1(sc, XL_DOWN_POLL, 64); 2093 sc->xl_wdog_timer = 5; 2094 } 2095 } else { 2096 if (sc->xl_cdata.xl_tx_head != NULL) { 2097 CSR_WRITE_4(sc, XL_DOWNLIST_PTR, 2098 sc->xl_cdata.xl_tx_head->xl_phys); 2099 sc->xl_wdog_timer = 5; 2100 } 2101 } 2102 /* 2103 * Remember to set this for the 2104 * first generation 3c90X chips. 2105 */ 2106 CSR_WRITE_1(sc, XL_TX_FREETHRESH, XL_PACKET_SIZE >> 8); 2107 if (txstat & XL_TXSTATUS_UNDERRUN && 2108 sc->xl_tx_thresh < XL_PACKET_SIZE) { 2109 sc->xl_tx_thresh += XL_MIN_FRAMELEN; 2110 device_printf(sc->xl_dev, 2111 "tx underrun, increasing tx start threshold to %d bytes\n", sc->xl_tx_thresh); 2112 } 2113 CSR_WRITE_2(sc, XL_COMMAND, 2114 XL_CMD_TX_SET_START|sc->xl_tx_thresh); 2115 if (sc->xl_type == XL_TYPE_905B) { 2116 CSR_WRITE_2(sc, XL_COMMAND, 2117 XL_CMD_SET_TX_RECLAIM|(XL_PACKET_SIZE >> 4)); 2118 } 2119 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_ENABLE); 2120 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); 2121 } else { 2122 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_ENABLE); 2123 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); 2124 } 2125 /* 2126 * Write an arbitrary byte to the TX_STATUS register 2127 * to clear this interrupt/error and advance to the next. 2128 */ 2129 CSR_WRITE_1(sc, XL_TX_STATUS, 0x01); 2130 } 2131 } 2132 2133 static void 2134 xl_intr(void *arg) 2135 { 2136 struct xl_softc *sc = arg; 2137 if_t ifp = sc->xl_ifp; 2138 u_int16_t status; 2139 2140 XL_LOCK(sc); 2141 2142 #ifdef DEVICE_POLLING 2143 if (if_getcapenable(ifp) & IFCAP_POLLING) { 2144 XL_UNLOCK(sc); 2145 return; 2146 } 2147 #endif 2148 2149 for (;;) { 2150 status = CSR_READ_2(sc, XL_STATUS); 2151 if ((status & XL_INTRS) == 0 || status == 0xFFFF) 2152 break; 2153 CSR_WRITE_2(sc, XL_COMMAND, 2154 XL_CMD_INTR_ACK|(status & XL_INTRS)); 2155 if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) == 0) 2156 break; 2157 2158 if (status & XL_STAT_UP_COMPLETE) { 2159 if (xl_rxeof(sc) == 0) { 2160 while (xl_rx_resync(sc)) 2161 xl_rxeof(sc); 2162 } 2163 } 2164 2165 if (status & XL_STAT_DOWN_COMPLETE) { 2166 if (sc->xl_type == XL_TYPE_905B) 2167 xl_txeof_90xB(sc); 2168 else 2169 xl_txeof(sc); 2170 } 2171 2172 if (status & XL_STAT_TX_COMPLETE) { 2173 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2174 xl_txeoc(sc); 2175 } 2176 2177 if (status & XL_STAT_ADFAIL) { 2178 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING); 2179 xl_init_locked(sc); 2180 break; 2181 } 2182 2183 if (status & XL_STAT_STATSOFLOW) 2184 xl_stats_update(sc); 2185 } 2186 2187 if (!if_sendq_empty(ifp) && 2188 if_getdrvflags(ifp) & IFF_DRV_RUNNING) { 2189 if (sc->xl_type == XL_TYPE_905B) 2190 xl_start_90xB_locked(ifp); 2191 else 2192 xl_start_locked(ifp); 2193 } 2194 2195 XL_UNLOCK(sc); 2196 } 2197 2198 #ifdef DEVICE_POLLING 2199 static int 2200 xl_poll(if_t ifp, enum poll_cmd cmd, int count) 2201 { 2202 struct xl_softc *sc = if_getsoftc(ifp); 2203 int rx_npkts = 0; 2204 2205 XL_LOCK(sc); 2206 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) 2207 rx_npkts = xl_poll_locked(ifp, cmd, count); 2208 XL_UNLOCK(sc); 2209 return (rx_npkts); 2210 } 2211 2212 static int 2213 xl_poll_locked(if_t ifp, enum poll_cmd cmd, int count) 2214 { 2215 struct xl_softc *sc = if_getsoftc(ifp); 2216 int rx_npkts; 2217 2218 XL_LOCK_ASSERT(sc); 2219 2220 sc->rxcycles = count; 2221 rx_npkts = xl_rxeof(sc); 2222 if (sc->xl_type == XL_TYPE_905B) 2223 xl_txeof_90xB(sc); 2224 else 2225 xl_txeof(sc); 2226 2227 if (!if_sendq_empty(ifp)) { 2228 if (sc->xl_type == XL_TYPE_905B) 2229 xl_start_90xB_locked(ifp); 2230 else 2231 xl_start_locked(ifp); 2232 } 2233 2234 if (cmd == POLL_AND_CHECK_STATUS) { 2235 u_int16_t status; 2236 2237 status = CSR_READ_2(sc, XL_STATUS); 2238 if (status & XL_INTRS && status != 0xFFFF) { 2239 CSR_WRITE_2(sc, XL_COMMAND, 2240 XL_CMD_INTR_ACK|(status & XL_INTRS)); 2241 2242 if (status & XL_STAT_TX_COMPLETE) { 2243 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2244 xl_txeoc(sc); 2245 } 2246 2247 if (status & XL_STAT_ADFAIL) { 2248 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING); 2249 xl_init_locked(sc); 2250 } 2251 2252 if (status & XL_STAT_STATSOFLOW) 2253 xl_stats_update(sc); 2254 } 2255 } 2256 return (rx_npkts); 2257 } 2258 #endif /* DEVICE_POLLING */ 2259 2260 static void 2261 xl_tick(void *xsc) 2262 { 2263 struct xl_softc *sc = xsc; 2264 struct mii_data *mii; 2265 2266 XL_LOCK_ASSERT(sc); 2267 2268 if (sc->xl_miibus != NULL) { 2269 mii = device_get_softc(sc->xl_miibus); 2270 mii_tick(mii); 2271 } 2272 2273 xl_stats_update(sc); 2274 if (xl_watchdog(sc) == EJUSTRETURN) 2275 return; 2276 2277 callout_reset(&sc->xl_tick_callout, hz, xl_tick, sc); 2278 } 2279 2280 static void 2281 xl_stats_update(struct xl_softc *sc) 2282 { 2283 if_t ifp = sc->xl_ifp; 2284 struct xl_stats xl_stats; 2285 u_int8_t *p; 2286 int i; 2287 2288 XL_LOCK_ASSERT(sc); 2289 2290 bzero((char *)&xl_stats, sizeof(struct xl_stats)); 2291 2292 p = (u_int8_t *)&xl_stats; 2293 2294 /* Read all the stats registers. */ 2295 XL_SEL_WIN(6); 2296 2297 for (i = 0; i < 16; i++) 2298 *p++ = CSR_READ_1(sc, XL_W6_CARRIER_LOST + i); 2299 2300 if_inc_counter(ifp, IFCOUNTER_IERRORS, xl_stats.xl_rx_overrun); 2301 2302 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 2303 xl_stats.xl_tx_multi_collision + 2304 xl_stats.xl_tx_single_collision + 2305 xl_stats.xl_tx_late_collision); 2306 2307 /* 2308 * Boomerang and cyclone chips have an extra stats counter 2309 * in window 4 (BadSSD). We have to read this too in order 2310 * to clear out all the stats registers and avoid a statsoflow 2311 * interrupt. 2312 */ 2313 XL_SEL_WIN(4); 2314 CSR_READ_1(sc, XL_W4_BADSSD); 2315 XL_SEL_WIN(7); 2316 } 2317 2318 /* 2319 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 2320 * pointers to the fragment pointers. 2321 */ 2322 static int 2323 xl_encap(struct xl_softc *sc, struct xl_chain *c, struct mbuf **m_head) 2324 { 2325 struct mbuf *m_new; 2326 if_t ifp = sc->xl_ifp; 2327 int error, i, nseg, total_len; 2328 u_int32_t status; 2329 2330 XL_LOCK_ASSERT(sc); 2331 2332 error = bus_dmamap_load_mbuf_sg(sc->xl_mtag, c->xl_map, *m_head, 2333 sc->xl_cdata.xl_tx_segs, &nseg, BUS_DMA_NOWAIT); 2334 2335 if (error && error != EFBIG) { 2336 if_printf(ifp, "can't map mbuf (error %d)\n", error); 2337 return (error); 2338 } 2339 2340 /* 2341 * Handle special case: we used up all 63 fragments, 2342 * but we have more mbufs left in the chain. Copy the 2343 * data into an mbuf cluster. Note that we don't 2344 * bother clearing the values in the other fragment 2345 * pointers/counters; it wouldn't gain us anything, 2346 * and would waste cycles. 2347 */ 2348 if (error) { 2349 m_new = m_collapse(*m_head, M_NOWAIT, XL_MAXFRAGS); 2350 if (m_new == NULL) { 2351 m_freem(*m_head); 2352 *m_head = NULL; 2353 return (ENOBUFS); 2354 } 2355 *m_head = m_new; 2356 2357 error = bus_dmamap_load_mbuf_sg(sc->xl_mtag, c->xl_map, 2358 *m_head, sc->xl_cdata.xl_tx_segs, &nseg, BUS_DMA_NOWAIT); 2359 if (error) { 2360 m_freem(*m_head); 2361 *m_head = NULL; 2362 if_printf(ifp, "can't map mbuf (error %d)\n", error); 2363 return (error); 2364 } 2365 } 2366 2367 KASSERT(nseg <= XL_MAXFRAGS, 2368 ("%s: too many DMA segments (%d)", __func__, nseg)); 2369 if (nseg == 0) { 2370 m_freem(*m_head); 2371 *m_head = NULL; 2372 return (EIO); 2373 } 2374 bus_dmamap_sync(sc->xl_mtag, c->xl_map, BUS_DMASYNC_PREWRITE); 2375 2376 total_len = 0; 2377 for (i = 0; i < nseg; i++) { 2378 KASSERT(sc->xl_cdata.xl_tx_segs[i].ds_len <= MCLBYTES, 2379 ("segment size too large")); 2380 c->xl_ptr->xl_frag[i].xl_addr = 2381 htole32(sc->xl_cdata.xl_tx_segs[i].ds_addr); 2382 c->xl_ptr->xl_frag[i].xl_len = 2383 htole32(sc->xl_cdata.xl_tx_segs[i].ds_len); 2384 total_len += sc->xl_cdata.xl_tx_segs[i].ds_len; 2385 } 2386 c->xl_ptr->xl_frag[nseg - 1].xl_len |= htole32(XL_LAST_FRAG); 2387 2388 if (sc->xl_type == XL_TYPE_905B) { 2389 status = XL_TXSTAT_RND_DEFEAT; 2390 2391 #ifndef XL905B_TXCSUM_BROKEN 2392 if ((*m_head)->m_pkthdr.csum_flags) { 2393 if ((*m_head)->m_pkthdr.csum_flags & CSUM_IP) 2394 status |= XL_TXSTAT_IPCKSUM; 2395 if ((*m_head)->m_pkthdr.csum_flags & CSUM_TCP) 2396 status |= XL_TXSTAT_TCPCKSUM; 2397 if ((*m_head)->m_pkthdr.csum_flags & CSUM_UDP) 2398 status |= XL_TXSTAT_UDPCKSUM; 2399 } 2400 #endif 2401 } else 2402 status = total_len; 2403 c->xl_ptr->xl_status = htole32(status); 2404 c->xl_ptr->xl_next = 0; 2405 2406 c->xl_mbuf = *m_head; 2407 return (0); 2408 } 2409 2410 /* 2411 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 2412 * to the mbuf data regions directly in the transmit lists. We also save a 2413 * copy of the pointers since the transmit list fragment pointers are 2414 * physical addresses. 2415 */ 2416 2417 static void 2418 xl_start(if_t ifp) 2419 { 2420 struct xl_softc *sc = if_getsoftc(ifp); 2421 2422 XL_LOCK(sc); 2423 2424 if (sc->xl_type == XL_TYPE_905B) 2425 xl_start_90xB_locked(ifp); 2426 else 2427 xl_start_locked(ifp); 2428 2429 XL_UNLOCK(sc); 2430 } 2431 2432 static void 2433 xl_start_locked(if_t ifp) 2434 { 2435 struct xl_softc *sc = if_getsoftc(ifp); 2436 struct mbuf *m_head; 2437 struct xl_chain *prev = NULL, *cur_tx = NULL, *start_tx; 2438 struct xl_chain *prev_tx; 2439 int error; 2440 2441 XL_LOCK_ASSERT(sc); 2442 2443 if ((if_getdrvflags(ifp) & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 2444 IFF_DRV_RUNNING) 2445 return; 2446 /* 2447 * Check for an available queue slot. If there are none, 2448 * punt. 2449 */ 2450 if (sc->xl_cdata.xl_tx_free == NULL) { 2451 xl_txeoc(sc); 2452 xl_txeof(sc); 2453 if (sc->xl_cdata.xl_tx_free == NULL) { 2454 if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, 0); 2455 return; 2456 } 2457 } 2458 2459 start_tx = sc->xl_cdata.xl_tx_free; 2460 2461 for (; !if_sendq_empty(ifp) && 2462 sc->xl_cdata.xl_tx_free != NULL;) { 2463 m_head = if_dequeue(ifp); 2464 if (m_head == NULL) 2465 break; 2466 2467 /* Pick a descriptor off the free list. */ 2468 prev_tx = cur_tx; 2469 cur_tx = sc->xl_cdata.xl_tx_free; 2470 2471 /* Pack the data into the descriptor. */ 2472 error = xl_encap(sc, cur_tx, &m_head); 2473 if (error) { 2474 cur_tx = prev_tx; 2475 if (m_head == NULL) 2476 break; 2477 if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, 0); 2478 if_sendq_prepend(ifp, m_head); 2479 break; 2480 } 2481 2482 sc->xl_cdata.xl_tx_free = cur_tx->xl_next; 2483 cur_tx->xl_next = NULL; 2484 2485 /* Chain it together. */ 2486 if (prev != NULL) { 2487 prev->xl_next = cur_tx; 2488 prev->xl_ptr->xl_next = htole32(cur_tx->xl_phys); 2489 } 2490 prev = cur_tx; 2491 2492 /* 2493 * If there's a BPF listener, bounce a copy of this frame 2494 * to him. 2495 */ 2496 BPF_MTAP(ifp, cur_tx->xl_mbuf); 2497 } 2498 2499 /* 2500 * If there are no packets queued, bail. 2501 */ 2502 if (cur_tx == NULL) 2503 return; 2504 2505 /* 2506 * Place the request for the upload interrupt 2507 * in the last descriptor in the chain. This way, if 2508 * we're chaining several packets at once, we'll only 2509 * get an interrupt once for the whole chain rather than 2510 * once for each packet. 2511 */ 2512 cur_tx->xl_ptr->xl_status |= htole32(XL_TXSTAT_DL_INTR); 2513 2514 /* 2515 * Queue the packets. If the TX channel is clear, update 2516 * the downlist pointer register. 2517 */ 2518 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_STALL); 2519 xl_wait(sc); 2520 2521 if (sc->xl_cdata.xl_tx_head != NULL) { 2522 sc->xl_cdata.xl_tx_tail->xl_next = start_tx; 2523 sc->xl_cdata.xl_tx_tail->xl_ptr->xl_next = 2524 htole32(start_tx->xl_phys); 2525 sc->xl_cdata.xl_tx_tail->xl_ptr->xl_status &= 2526 htole32(~XL_TXSTAT_DL_INTR); 2527 sc->xl_cdata.xl_tx_tail = cur_tx; 2528 } else { 2529 sc->xl_cdata.xl_tx_head = start_tx; 2530 sc->xl_cdata.xl_tx_tail = cur_tx; 2531 } 2532 bus_dmamap_sync(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_dmamap, 2533 BUS_DMASYNC_PREWRITE); 2534 if (!CSR_READ_4(sc, XL_DOWNLIST_PTR)) 2535 CSR_WRITE_4(sc, XL_DOWNLIST_PTR, start_tx->xl_phys); 2536 2537 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); 2538 2539 XL_SEL_WIN(7); 2540 2541 /* 2542 * Set a timeout in case the chip goes out to lunch. 2543 */ 2544 sc->xl_wdog_timer = 5; 2545 2546 /* 2547 * XXX Under certain conditions, usually on slower machines 2548 * where interrupts may be dropped, it's possible for the 2549 * adapter to chew up all the buffers in the receive ring 2550 * and stall, without us being able to do anything about it. 2551 * To guard against this, we need to make a pass over the 2552 * RX queue to make sure there aren't any packets pending. 2553 * Doing it here means we can flush the receive ring at the 2554 * same time the chip is DMAing the transmit descriptors we 2555 * just gave it. 2556 * 2557 * 3Com goes to some lengths to emphasize the Parallel Tasking (tm) 2558 * nature of their chips in all their marketing literature; 2559 * we may as well take advantage of it. :) 2560 */ 2561 taskqueue_enqueue(taskqueue_swi, &sc->xl_task); 2562 } 2563 2564 static void 2565 xl_start_90xB_locked(if_t ifp) 2566 { 2567 struct xl_softc *sc = if_getsoftc(ifp); 2568 struct mbuf *m_head; 2569 struct xl_chain *prev = NULL, *cur_tx = NULL, *start_tx; 2570 struct xl_chain *prev_tx; 2571 int error, idx; 2572 2573 XL_LOCK_ASSERT(sc); 2574 2575 if ((if_getdrvflags(ifp) & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 2576 IFF_DRV_RUNNING) 2577 return; 2578 2579 idx = sc->xl_cdata.xl_tx_prod; 2580 start_tx = &sc->xl_cdata.xl_tx_chain[idx]; 2581 2582 for (; !if_sendq_empty(ifp) && 2583 sc->xl_cdata.xl_tx_chain[idx].xl_mbuf == NULL;) { 2584 if ((XL_TX_LIST_CNT - sc->xl_cdata.xl_tx_cnt) < 3) { 2585 if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, 0); 2586 break; 2587 } 2588 2589 m_head = if_dequeue(ifp); 2590 if (m_head == NULL) 2591 break; 2592 2593 prev_tx = cur_tx; 2594 cur_tx = &sc->xl_cdata.xl_tx_chain[idx]; 2595 2596 /* Pack the data into the descriptor. */ 2597 error = xl_encap(sc, cur_tx, &m_head); 2598 if (error) { 2599 cur_tx = prev_tx; 2600 if (m_head == NULL) 2601 break; 2602 if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, 0); 2603 if_sendq_prepend(ifp, m_head); 2604 break; 2605 } 2606 2607 /* Chain it together. */ 2608 if (prev != NULL) 2609 prev->xl_ptr->xl_next = htole32(cur_tx->xl_phys); 2610 prev = cur_tx; 2611 2612 /* 2613 * If there's a BPF listener, bounce a copy of this frame 2614 * to him. 2615 */ 2616 BPF_MTAP(ifp, cur_tx->xl_mbuf); 2617 2618 XL_INC(idx, XL_TX_LIST_CNT); 2619 sc->xl_cdata.xl_tx_cnt++; 2620 } 2621 2622 /* 2623 * If there are no packets queued, bail. 2624 */ 2625 if (cur_tx == NULL) 2626 return; 2627 2628 /* 2629 * Place the request for the upload interrupt 2630 * in the last descriptor in the chain. This way, if 2631 * we're chaining several packets at once, we'll only 2632 * get an interrupt once for the whole chain rather than 2633 * once for each packet. 2634 */ 2635 cur_tx->xl_ptr->xl_status |= htole32(XL_TXSTAT_DL_INTR); 2636 2637 /* Start transmission */ 2638 sc->xl_cdata.xl_tx_prod = idx; 2639 start_tx->xl_prev->xl_ptr->xl_next = htole32(start_tx->xl_phys); 2640 bus_dmamap_sync(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_dmamap, 2641 BUS_DMASYNC_PREWRITE); 2642 2643 /* 2644 * Set a timeout in case the chip goes out to lunch. 2645 */ 2646 sc->xl_wdog_timer = 5; 2647 } 2648 2649 static void 2650 xl_init(void *xsc) 2651 { 2652 struct xl_softc *sc = xsc; 2653 2654 XL_LOCK(sc); 2655 xl_init_locked(sc); 2656 XL_UNLOCK(sc); 2657 } 2658 2659 static void 2660 xl_init_locked(struct xl_softc *sc) 2661 { 2662 if_t ifp = sc->xl_ifp; 2663 int error, i; 2664 struct mii_data *mii = NULL; 2665 2666 XL_LOCK_ASSERT(sc); 2667 2668 if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) != 0) 2669 return; 2670 /* 2671 * Cancel pending I/O and free all RX/TX buffers. 2672 */ 2673 xl_stop(sc); 2674 2675 /* Reset the chip to a known state. */ 2676 xl_reset(sc); 2677 2678 if (sc->xl_miibus == NULL) { 2679 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); 2680 xl_wait(sc); 2681 } 2682 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); 2683 xl_wait(sc); 2684 DELAY(10000); 2685 2686 if (sc->xl_miibus != NULL) 2687 mii = device_get_softc(sc->xl_miibus); 2688 2689 /* 2690 * Clear WOL status and disable all WOL feature as WOL 2691 * would interfere Rx operation under normal environments. 2692 */ 2693 if ((sc->xl_flags & XL_FLAG_WOL) != 0) { 2694 XL_SEL_WIN(7); 2695 CSR_READ_2(sc, XL_W7_BM_PME); 2696 CSR_WRITE_2(sc, XL_W7_BM_PME, 0); 2697 } 2698 /* Init our MAC address */ 2699 XL_SEL_WIN(2); 2700 for (i = 0; i < ETHER_ADDR_LEN; i++) { 2701 CSR_WRITE_1(sc, XL_W2_STATION_ADDR_LO + i, 2702 if_getlladdr(sc->xl_ifp)[i]); 2703 } 2704 2705 /* Clear the station mask. */ 2706 for (i = 0; i < 3; i++) 2707 CSR_WRITE_2(sc, XL_W2_STATION_MASK_LO + (i * 2), 0); 2708 #ifdef notdef 2709 /* Reset TX and RX. */ 2710 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); 2711 xl_wait(sc); 2712 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); 2713 xl_wait(sc); 2714 #endif 2715 /* Init circular RX list. */ 2716 error = xl_list_rx_init(sc); 2717 if (error) { 2718 device_printf(sc->xl_dev, "initialization of the rx ring failed (%d)\n", 2719 error); 2720 xl_stop(sc); 2721 return; 2722 } 2723 2724 /* Init TX descriptors. */ 2725 if (sc->xl_type == XL_TYPE_905B) 2726 error = xl_list_tx_init_90xB(sc); 2727 else 2728 error = xl_list_tx_init(sc); 2729 if (error) { 2730 device_printf(sc->xl_dev, "initialization of the tx ring failed (%d)\n", 2731 error); 2732 xl_stop(sc); 2733 return; 2734 } 2735 2736 /* 2737 * Set the TX freethresh value. 2738 * Note that this has no effect on 3c905B "cyclone" 2739 * cards but is required for 3c900/3c905 "boomerang" 2740 * cards in order to enable the download engine. 2741 */ 2742 CSR_WRITE_1(sc, XL_TX_FREETHRESH, XL_PACKET_SIZE >> 8); 2743 2744 /* Set the TX start threshold for best performance. */ 2745 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_SET_START|sc->xl_tx_thresh); 2746 2747 /* 2748 * If this is a 3c905B, also set the tx reclaim threshold. 2749 * This helps cut down on the number of tx reclaim errors 2750 * that could happen on a busy network. The chip multiplies 2751 * the register value by 16 to obtain the actual threshold 2752 * in bytes, so we divide by 16 when setting the value here. 2753 * The existing threshold value can be examined by reading 2754 * the register at offset 9 in window 5. 2755 */ 2756 if (sc->xl_type == XL_TYPE_905B) { 2757 CSR_WRITE_2(sc, XL_COMMAND, 2758 XL_CMD_SET_TX_RECLAIM|(XL_PACKET_SIZE >> 4)); 2759 } 2760 2761 /* Set RX filter bits. */ 2762 xl_rxfilter(sc); 2763 2764 /* 2765 * Load the address of the RX list. We have to 2766 * stall the upload engine before we can manipulate 2767 * the uplist pointer register, then unstall it when 2768 * we're finished. We also have to wait for the 2769 * stall command to complete before proceeding. 2770 * Note that we have to do this after any RX resets 2771 * have completed since the uplist register is cleared 2772 * by a reset. 2773 */ 2774 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_STALL); 2775 xl_wait(sc); 2776 CSR_WRITE_4(sc, XL_UPLIST_PTR, sc->xl_ldata.xl_rx_dmaaddr); 2777 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_UNSTALL); 2778 xl_wait(sc); 2779 2780 if (sc->xl_type == XL_TYPE_905B) { 2781 /* Set polling interval */ 2782 CSR_WRITE_1(sc, XL_DOWN_POLL, 64); 2783 /* Load the address of the TX list */ 2784 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_STALL); 2785 xl_wait(sc); 2786 CSR_WRITE_4(sc, XL_DOWNLIST_PTR, 2787 sc->xl_cdata.xl_tx_chain[0].xl_phys); 2788 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); 2789 xl_wait(sc); 2790 } 2791 2792 /* 2793 * If the coax transceiver is on, make sure to enable 2794 * the DC-DC converter. 2795 */ 2796 XL_SEL_WIN(3); 2797 if (sc->xl_xcvr == XL_XCVR_COAX) 2798 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_START); 2799 else 2800 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); 2801 2802 /* 2803 * increase packet size to allow reception of 802.1q or ISL packets. 2804 * For the 3c90x chip, set the 'allow large packets' bit in the MAC 2805 * control register. For 3c90xB/C chips, use the RX packet size 2806 * register. 2807 */ 2808 2809 if (sc->xl_type == XL_TYPE_905B) 2810 CSR_WRITE_2(sc, XL_W3_MAXPKTSIZE, XL_PACKET_SIZE); 2811 else { 2812 u_int8_t macctl; 2813 macctl = CSR_READ_1(sc, XL_W3_MAC_CTRL); 2814 macctl |= XL_MACCTRL_ALLOW_LARGE_PACK; 2815 CSR_WRITE_1(sc, XL_W3_MAC_CTRL, macctl); 2816 } 2817 2818 /* Clear out the stats counters. */ 2819 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STATS_DISABLE); 2820 xl_stats_update(sc); 2821 XL_SEL_WIN(4); 2822 CSR_WRITE_2(sc, XL_W4_NET_DIAG, XL_NETDIAG_UPPER_BYTES_ENABLE); 2823 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STATS_ENABLE); 2824 2825 /* 2826 * Enable interrupts. 2827 */ 2828 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ACK|0xFF); 2829 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STAT_ENB|XL_INTRS); 2830 #ifdef DEVICE_POLLING 2831 /* Disable interrupts if we are polling. */ 2832 if (if_getcapenable(ifp) & IFCAP_POLLING) 2833 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|0); 2834 else 2835 #endif 2836 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|XL_INTRS); 2837 if (sc->xl_flags & XL_FLAG_FUNCREG) 2838 bus_space_write_4(sc->xl_ftag, sc->xl_fhandle, 4, 0x8000); 2839 2840 /* Set the RX early threshold */ 2841 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_THRESH|(XL_PACKET_SIZE >>2)); 2842 CSR_WRITE_4(sc, XL_DMACTL, XL_DMACTL_UP_RX_EARLY); 2843 2844 /* Enable receiver and transmitter. */ 2845 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_ENABLE); 2846 xl_wait(sc); 2847 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_ENABLE); 2848 xl_wait(sc); 2849 2850 /* XXX Downcall to miibus. */ 2851 if (mii != NULL) 2852 mii_mediachg(mii); 2853 2854 /* Select window 7 for normal operations. */ 2855 XL_SEL_WIN(7); 2856 2857 if_setdrvflagbits(ifp, IFF_DRV_RUNNING, 0); 2858 if_setdrvflagbits(ifp, 0, IFF_DRV_OACTIVE); 2859 2860 sc->xl_wdog_timer = 0; 2861 callout_reset(&sc->xl_tick_callout, hz, xl_tick, sc); 2862 } 2863 2864 /* 2865 * Set media options. 2866 */ 2867 static int 2868 xl_ifmedia_upd(if_t ifp) 2869 { 2870 struct xl_softc *sc = if_getsoftc(ifp); 2871 struct ifmedia *ifm = NULL; 2872 struct mii_data *mii = NULL; 2873 2874 XL_LOCK(sc); 2875 2876 if (sc->xl_miibus != NULL) 2877 mii = device_get_softc(sc->xl_miibus); 2878 if (mii == NULL) 2879 ifm = &sc->ifmedia; 2880 else 2881 ifm = &mii->mii_media; 2882 2883 switch (IFM_SUBTYPE(ifm->ifm_media)) { 2884 case IFM_100_FX: 2885 case IFM_10_FL: 2886 case IFM_10_2: 2887 case IFM_10_5: 2888 xl_setmode(sc, ifm->ifm_media); 2889 XL_UNLOCK(sc); 2890 return (0); 2891 } 2892 2893 if (sc->xl_media & XL_MEDIAOPT_MII || 2894 sc->xl_media & XL_MEDIAOPT_BTX || 2895 sc->xl_media & XL_MEDIAOPT_BT4) { 2896 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING); 2897 xl_init_locked(sc); 2898 } else { 2899 xl_setmode(sc, ifm->ifm_media); 2900 } 2901 2902 XL_UNLOCK(sc); 2903 2904 return (0); 2905 } 2906 2907 /* 2908 * Report current media status. 2909 */ 2910 static void 2911 xl_ifmedia_sts(if_t ifp, struct ifmediareq *ifmr) 2912 { 2913 struct xl_softc *sc = if_getsoftc(ifp); 2914 u_int32_t icfg; 2915 u_int16_t status = 0; 2916 struct mii_data *mii = NULL; 2917 2918 XL_LOCK(sc); 2919 2920 if (sc->xl_miibus != NULL) 2921 mii = device_get_softc(sc->xl_miibus); 2922 2923 XL_SEL_WIN(4); 2924 status = CSR_READ_2(sc, XL_W4_MEDIA_STATUS); 2925 2926 XL_SEL_WIN(3); 2927 icfg = CSR_READ_4(sc, XL_W3_INTERNAL_CFG) & XL_ICFG_CONNECTOR_MASK; 2928 icfg >>= XL_ICFG_CONNECTOR_BITS; 2929 2930 ifmr->ifm_active = IFM_ETHER; 2931 ifmr->ifm_status = IFM_AVALID; 2932 2933 if ((status & XL_MEDIASTAT_CARRIER) == 0) 2934 ifmr->ifm_status |= IFM_ACTIVE; 2935 2936 switch (icfg) { 2937 case XL_XCVR_10BT: 2938 ifmr->ifm_active = IFM_ETHER|IFM_10_T; 2939 if (CSR_READ_1(sc, XL_W3_MAC_CTRL) & XL_MACCTRL_DUPLEX) 2940 ifmr->ifm_active |= IFM_FDX; 2941 else 2942 ifmr->ifm_active |= IFM_HDX; 2943 break; 2944 case XL_XCVR_AUI: 2945 if (sc->xl_type == XL_TYPE_905B && 2946 sc->xl_media == XL_MEDIAOPT_10FL) { 2947 ifmr->ifm_active = IFM_ETHER|IFM_10_FL; 2948 if (CSR_READ_1(sc, XL_W3_MAC_CTRL) & XL_MACCTRL_DUPLEX) 2949 ifmr->ifm_active |= IFM_FDX; 2950 else 2951 ifmr->ifm_active |= IFM_HDX; 2952 } else 2953 ifmr->ifm_active = IFM_ETHER|IFM_10_5; 2954 break; 2955 case XL_XCVR_COAX: 2956 ifmr->ifm_active = IFM_ETHER|IFM_10_2; 2957 break; 2958 /* 2959 * XXX MII and BTX/AUTO should be separate cases. 2960 */ 2961 2962 case XL_XCVR_100BTX: 2963 case XL_XCVR_AUTO: 2964 case XL_XCVR_MII: 2965 if (mii != NULL) { 2966 mii_pollstat(mii); 2967 ifmr->ifm_active = mii->mii_media_active; 2968 ifmr->ifm_status = mii->mii_media_status; 2969 } 2970 break; 2971 case XL_XCVR_100BFX: 2972 ifmr->ifm_active = IFM_ETHER|IFM_100_FX; 2973 break; 2974 default: 2975 if_printf(ifp, "unknown XCVR type: %d\n", icfg); 2976 break; 2977 } 2978 2979 XL_UNLOCK(sc); 2980 } 2981 2982 static int 2983 xl_ioctl(if_t ifp, u_long command, caddr_t data) 2984 { 2985 struct xl_softc *sc = if_getsoftc(ifp); 2986 struct ifreq *ifr = (struct ifreq *) data; 2987 int error = 0, mask; 2988 struct mii_data *mii = NULL; 2989 2990 switch (command) { 2991 case SIOCSIFFLAGS: 2992 XL_LOCK(sc); 2993 if (if_getflags(ifp) & IFF_UP) { 2994 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING && 2995 (if_getflags(ifp) ^ sc->xl_if_flags) & 2996 (IFF_PROMISC | IFF_ALLMULTI)) 2997 xl_rxfilter(sc); 2998 else 2999 xl_init_locked(sc); 3000 } else { 3001 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) 3002 xl_stop(sc); 3003 } 3004 sc->xl_if_flags = if_getflags(ifp); 3005 XL_UNLOCK(sc); 3006 break; 3007 case SIOCADDMULTI: 3008 case SIOCDELMULTI: 3009 /* XXX Downcall from if_addmulti() possibly with locks held. */ 3010 XL_LOCK(sc); 3011 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) 3012 xl_rxfilter(sc); 3013 XL_UNLOCK(sc); 3014 break; 3015 case SIOCGIFMEDIA: 3016 case SIOCSIFMEDIA: 3017 if (sc->xl_miibus != NULL) 3018 mii = device_get_softc(sc->xl_miibus); 3019 if (mii == NULL) 3020 error = ifmedia_ioctl(ifp, ifr, 3021 &sc->ifmedia, command); 3022 else 3023 error = ifmedia_ioctl(ifp, ifr, 3024 &mii->mii_media, command); 3025 break; 3026 case SIOCSIFCAP: 3027 mask = ifr->ifr_reqcap ^ if_getcapenable(ifp); 3028 #ifdef DEVICE_POLLING 3029 if ((mask & IFCAP_POLLING) != 0 && 3030 (if_getcapabilities(ifp) & IFCAP_POLLING) != 0) { 3031 if_togglecapenable(ifp, IFCAP_POLLING); 3032 if ((if_getcapenable(ifp) & IFCAP_POLLING) != 0) { 3033 error = ether_poll_register(xl_poll, ifp); 3034 if (error) 3035 break; 3036 XL_LOCK(sc); 3037 /* Disable interrupts */ 3038 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|0); 3039 if_setcapenablebit(ifp, IFCAP_POLLING, 0); 3040 XL_UNLOCK(sc); 3041 } else { 3042 error = ether_poll_deregister(ifp); 3043 /* Enable interrupts. */ 3044 XL_LOCK(sc); 3045 CSR_WRITE_2(sc, XL_COMMAND, 3046 XL_CMD_INTR_ACK | 0xFF); 3047 CSR_WRITE_2(sc, XL_COMMAND, 3048 XL_CMD_INTR_ENB | XL_INTRS); 3049 if (sc->xl_flags & XL_FLAG_FUNCREG) 3050 bus_space_write_4(sc->xl_ftag, 3051 sc->xl_fhandle, 4, 0x8000); 3052 XL_UNLOCK(sc); 3053 } 3054 } 3055 #endif /* DEVICE_POLLING */ 3056 XL_LOCK(sc); 3057 if ((mask & IFCAP_TXCSUM) != 0 && 3058 (if_getcapabilities(ifp) & IFCAP_TXCSUM) != 0) { 3059 if_togglecapenable(ifp, IFCAP_TXCSUM); 3060 if ((if_getcapenable(ifp) & IFCAP_TXCSUM) != 0) 3061 if_sethwassistbits(ifp, XL905B_CSUM_FEATURES, 0); 3062 else 3063 if_sethwassistbits(ifp, 0, XL905B_CSUM_FEATURES); 3064 } 3065 if ((mask & IFCAP_RXCSUM) != 0 && 3066 (if_getcapabilities(ifp) & IFCAP_RXCSUM) != 0) 3067 if_togglecapenable(ifp, IFCAP_RXCSUM); 3068 if ((mask & IFCAP_WOL_MAGIC) != 0 && 3069 (if_getcapabilities(ifp) & IFCAP_WOL_MAGIC) != 0) 3070 if_togglecapenable(ifp, IFCAP_WOL_MAGIC); 3071 XL_UNLOCK(sc); 3072 break; 3073 default: 3074 error = ether_ioctl(ifp, command, data); 3075 break; 3076 } 3077 3078 return (error); 3079 } 3080 3081 static int 3082 xl_watchdog(struct xl_softc *sc) 3083 { 3084 if_t ifp = sc->xl_ifp; 3085 u_int16_t status = 0; 3086 int misintr; 3087 3088 XL_LOCK_ASSERT(sc); 3089 3090 if (sc->xl_wdog_timer == 0 || --sc->xl_wdog_timer != 0) 3091 return (0); 3092 3093 xl_rxeof(sc); 3094 xl_txeoc(sc); 3095 misintr = 0; 3096 if (sc->xl_type == XL_TYPE_905B) { 3097 xl_txeof_90xB(sc); 3098 if (sc->xl_cdata.xl_tx_cnt == 0) 3099 misintr++; 3100 } else { 3101 xl_txeof(sc); 3102 if (sc->xl_cdata.xl_tx_head == NULL) 3103 misintr++; 3104 } 3105 if (misintr != 0) { 3106 device_printf(sc->xl_dev, 3107 "watchdog timeout (missed Tx interrupts) -- recovering\n"); 3108 return (0); 3109 } 3110 3111 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 3112 XL_SEL_WIN(4); 3113 status = CSR_READ_2(sc, XL_W4_MEDIA_STATUS); 3114 device_printf(sc->xl_dev, "watchdog timeout\n"); 3115 3116 if (status & XL_MEDIASTAT_CARRIER) 3117 device_printf(sc->xl_dev, 3118 "no carrier - transceiver cable problem?\n"); 3119 3120 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING); 3121 xl_init_locked(sc); 3122 3123 if (!if_sendq_empty(ifp)) { 3124 if (sc->xl_type == XL_TYPE_905B) 3125 xl_start_90xB_locked(ifp); 3126 else 3127 xl_start_locked(ifp); 3128 } 3129 3130 return (EJUSTRETURN); 3131 } 3132 3133 /* 3134 * Stop the adapter and free any mbufs allocated to the 3135 * RX and TX lists. 3136 */ 3137 static void 3138 xl_stop(struct xl_softc *sc) 3139 { 3140 int i; 3141 if_t ifp = sc->xl_ifp; 3142 3143 XL_LOCK_ASSERT(sc); 3144 3145 sc->xl_wdog_timer = 0; 3146 3147 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_DISABLE); 3148 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STATS_DISABLE); 3149 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB); 3150 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_DISCARD); 3151 xl_wait(sc); 3152 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_DISABLE); 3153 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); 3154 DELAY(800); 3155 3156 #ifdef foo 3157 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); 3158 xl_wait(sc); 3159 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); 3160 xl_wait(sc); 3161 #endif 3162 3163 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ACK|XL_STAT_INTLATCH); 3164 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STAT_ENB|0); 3165 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|0); 3166 if (sc->xl_flags & XL_FLAG_FUNCREG) 3167 bus_space_write_4(sc->xl_ftag, sc->xl_fhandle, 4, 0x8000); 3168 3169 /* Stop the stats updater. */ 3170 callout_stop(&sc->xl_tick_callout); 3171 3172 /* 3173 * Free data in the RX lists. 3174 */ 3175 for (i = 0; i < XL_RX_LIST_CNT; i++) { 3176 if (sc->xl_cdata.xl_rx_chain[i].xl_mbuf != NULL) { 3177 bus_dmamap_unload(sc->xl_mtag, 3178 sc->xl_cdata.xl_rx_chain[i].xl_map); 3179 bus_dmamap_destroy(sc->xl_mtag, 3180 sc->xl_cdata.xl_rx_chain[i].xl_map); 3181 m_freem(sc->xl_cdata.xl_rx_chain[i].xl_mbuf); 3182 sc->xl_cdata.xl_rx_chain[i].xl_mbuf = NULL; 3183 } 3184 } 3185 if (sc->xl_ldata.xl_rx_list != NULL) 3186 bzero(sc->xl_ldata.xl_rx_list, XL_RX_LIST_SZ); 3187 /* 3188 * Free the TX list buffers. 3189 */ 3190 for (i = 0; i < XL_TX_LIST_CNT; i++) { 3191 if (sc->xl_cdata.xl_tx_chain[i].xl_mbuf != NULL) { 3192 bus_dmamap_unload(sc->xl_mtag, 3193 sc->xl_cdata.xl_tx_chain[i].xl_map); 3194 bus_dmamap_destroy(sc->xl_mtag, 3195 sc->xl_cdata.xl_tx_chain[i].xl_map); 3196 m_freem(sc->xl_cdata.xl_tx_chain[i].xl_mbuf); 3197 sc->xl_cdata.xl_tx_chain[i].xl_mbuf = NULL; 3198 } 3199 } 3200 if (sc->xl_ldata.xl_tx_list != NULL) 3201 bzero(sc->xl_ldata.xl_tx_list, XL_TX_LIST_SZ); 3202 3203 if_setdrvflagbits(ifp, 0, (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)); 3204 } 3205 3206 /* 3207 * Stop all chip I/O so that the kernel's probe routines don't 3208 * get confused by errant DMAs when rebooting. 3209 */ 3210 static int 3211 xl_shutdown(device_t dev) 3212 { 3213 3214 return (xl_suspend(dev)); 3215 } 3216 3217 static int 3218 xl_suspend(device_t dev) 3219 { 3220 struct xl_softc *sc; 3221 3222 sc = device_get_softc(dev); 3223 3224 XL_LOCK(sc); 3225 xl_stop(sc); 3226 xl_setwol(sc); 3227 XL_UNLOCK(sc); 3228 3229 return (0); 3230 } 3231 3232 static int 3233 xl_resume(device_t dev) 3234 { 3235 struct xl_softc *sc; 3236 if_t ifp; 3237 3238 sc = device_get_softc(dev); 3239 ifp = sc->xl_ifp; 3240 3241 XL_LOCK(sc); 3242 3243 if (if_getflags(ifp) & IFF_UP) { 3244 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING); 3245 xl_init_locked(sc); 3246 } 3247 3248 XL_UNLOCK(sc); 3249 3250 return (0); 3251 } 3252 3253 static void 3254 xl_setwol(struct xl_softc *sc) 3255 { 3256 if_t ifp; 3257 u_int16_t cfg; 3258 3259 if ((sc->xl_flags & XL_FLAG_WOL) == 0) 3260 return; 3261 3262 ifp = sc->xl_ifp; 3263 XL_SEL_WIN(7); 3264 /* Clear any pending PME events. */ 3265 CSR_READ_2(sc, XL_W7_BM_PME); 3266 cfg = 0; 3267 if ((if_getcapenable(ifp) & IFCAP_WOL_MAGIC) != 0) 3268 cfg |= XL_BM_PME_MAGIC; 3269 CSR_WRITE_2(sc, XL_W7_BM_PME, cfg); 3270 /* Enable RX. */ 3271 if ((if_getcapenable(ifp) & IFCAP_WOL_MAGIC) != 0) 3272 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_ENABLE); 3273 /* Request PME. */ 3274 if ((if_getcapenable(ifp) & IFCAP_WOL_MAGIC) != 0) 3275 pci_enable_pme(sc->xl_dev); 3276 } 3277