Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/xe/if_xe.c
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1 /*- 2 * Copyright (c) 1998, 1999, 2003 Scott Mitchell 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 /*- 27 * Portions of this software were derived from Werner Koch's xirc2ps driver 28 * for Linux under the terms of the following license (from v1.30 of the 29 * xirc2ps driver): 30 * 31 * Copyright (c) 1997 by Werner Koch (dd9jn) 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, and the entire permission notice in its entirety, 38 * including the disclaimer of warranties. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. The name of the author may not be used to endorse or promote 43 * products derived from this software without specific prior 44 * written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 47 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 49 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 50 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 51 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 52 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 54 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 55 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 56 * OF THE POSSIBILITY OF SUCH DAMAGE. 57 */ 58 59 #include <sys/cdefs.h> 60 __FBSDID("$FreeBSD: releng/11.0/sys/dev/xe/if_xe.c 297000 2016-03-18 01:28:41Z jhibbits $"); 61 62 /* 63 * FreeBSD device driver for Xircom CreditCard PCMCIA Ethernet adapters. The 64 * following cards are currently known to work with the driver: 65 * Xircom CreditCard 10/100 (CE3) 66 * Xircom CreditCard Ethernet + Modem 28 (CEM28) 67 * Xircom CreditCard Ethernet 10/100 + Modem 56 (CEM56) 68 * Xircom RealPort Ethernet 10 69 * Xircom RealPort Ethernet 10/100 70 * Xircom RealPort Ethernet 10/100 + Modem 56 (REM56, REM56G) 71 * Intel EtherExpress Pro/100 PC Card Mobile Adapter 16 (Pro/100 M16A) 72 * Compaq Netelligent 10/100 PC Card (CPQ-10/100) 73 * 74 * Some other cards *should* work, but support for them is either broken or in 75 * an unknown state at the moment. I'm always interested in hearing from 76 * people who own any of these cards: 77 * Xircom CreditCard 10Base-T (PS-CE2-10) 78 * Xircom CreditCard Ethernet + ModemII (CEM2) 79 * Xircom CEM28 and CEM33 Ethernet/Modem cards (may be variants of CEM2?) 80 * 81 * Thanks to all who assisted with the development and testing of the driver, 82 * especially: Werner Koch, Duke Kamstra, Duncan Barclay, Jason George, Dru 83 * Nelson, Mike Kephart, Bill Rainey and Douglas Rand. Apologies if I've left 84 * out anyone who deserves a mention here. 85 * 86 * Special thanks to Ade Lovett for both hosting the mailing list and doing 87 * the CEM56/REM56 support code; and the FreeBSD UK Users' Group for hosting 88 * the web pages. 89 * 90 * Author email: <scott@uk.freebsd.org> 91 * Driver web page: http://ukug.uk.freebsd.org/~scott/xe_drv/ 92 */ 93 94 95 #include <sys/param.h> 96 #include <sys/cdefs.h> 97 #include <sys/errno.h> 98 #include <sys/kernel.h> 99 #include <sys/malloc.h> 100 #include <sys/mbuf.h> 101 #include <sys/socket.h> 102 #include <sys/sockio.h> 103 #include <sys/systm.h> 104 #include <sys/uio.h> 105 #include <sys/sysctl.h> 106 107 #include <sys/module.h> 108 #include <sys/bus.h> 109 110 #include <machine/bus.h> 111 #include <machine/resource.h> 112 #include <sys/rman.h> 113 114 #include <net/ethernet.h> 115 #include <net/if.h> 116 #include <net/if_var.h> 117 #include <net/if_arp.h> 118 #include <net/if_dl.h> 119 #include <net/if_media.h> 120 #include <net/if_mib.h> 121 #include <net/bpf.h> 122 #include <net/if_types.h> 123 124 #include <dev/xe/if_xereg.h> 125 #include <dev/xe/if_xevar.h> 126 127 /* 128 * MII command structure 129 */ 130 struct xe_mii_frame { 131 uint8_t mii_stdelim; 132 uint8_t mii_opcode; 133 uint8_t mii_phyaddr; 134 uint8_t mii_regaddr; 135 uint8_t mii_turnaround; 136 uint16_t mii_data; 137 }; 138 139 /* 140 * Media autonegotiation progress constants 141 */ 142 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */ 143 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */ 144 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */ 145 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */ 146 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */ 147 148 /* 149 * Prototypes start here 150 */ 151 static void xe_init(void *xscp); 152 static void xe_init_locked(struct xe_softc *scp); 153 static void xe_start(struct ifnet *ifp); 154 static void xe_start_locked(struct ifnet *ifp); 155 static int xe_ioctl(struct ifnet *ifp, u_long command, caddr_t data); 156 static void xe_watchdog(void *arg); 157 static void xe_intr(void *xscp); 158 static void xe_txintr(struct xe_softc *scp, uint8_t txst1); 159 static void xe_macintr(struct xe_softc *scp, uint8_t rst0, uint8_t txst0, 160 uint8_t txst1); 161 static void xe_rxintr(struct xe_softc *scp, uint8_t rst0); 162 static int xe_media_change(struct ifnet *ifp); 163 static void xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp); 164 static void xe_setmedia(void *arg); 165 static void xe_reset(struct xe_softc *scp); 166 static void xe_enable_intr(struct xe_softc *scp); 167 static void xe_disable_intr(struct xe_softc *scp); 168 static void xe_set_multicast(struct xe_softc *scp); 169 static void xe_set_addr(struct xe_softc *scp, uint8_t* addr, unsigned idx); 170 static void xe_mchash(struct xe_softc *scp, const uint8_t *addr); 171 static int xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp); 172 173 /* 174 * MII functions 175 */ 176 static void xe_mii_sync(struct xe_softc *scp); 177 static int xe_mii_init(struct xe_softc *scp); 178 static void xe_mii_send(struct xe_softc *scp, uint32_t bits, int cnt); 179 static int xe_mii_readreg(struct xe_softc *scp, 180 struct xe_mii_frame *frame); 181 static int xe_mii_writereg(struct xe_softc *scp, 182 struct xe_mii_frame *frame); 183 static uint16_t xe_phy_readreg(struct xe_softc *scp, uint16_t reg); 184 static void xe_phy_writereg(struct xe_softc *scp, uint16_t reg, 185 uint16_t data); 186 187 /* 188 * Debugging functions 189 */ 190 static void xe_mii_dump(struct xe_softc *scp); 191 #if 0 192 static void xe_reg_dump(struct xe_softc *scp); 193 #endif 194 195 /* 196 * Debug logging levels - set with hw.xe.debug sysctl 197 * 0 = None 198 * 1 = More hardware details, probe/attach progress 199 * 2 = Most function calls, ioctls and media selection progress 200 * 3 = Everything - interrupts, packets in/out and multicast address setup 201 */ 202 #define XE_DEBUG 203 #ifdef XE_DEBUG 204 205 /* sysctl vars */ 206 static SYSCTL_NODE(_hw, OID_AUTO, xe, CTLFLAG_RD, 0, "if_xe parameters"); 207 208 int xe_debug = 0; 209 SYSCTL_INT(_hw_xe, OID_AUTO, debug, CTLFLAG_RW, &xe_debug, 0, 210 "if_xe debug level"); 211 212 #define DEVPRINTF(level, arg) if (xe_debug >= (level)) device_printf arg 213 #define DPRINTF(level, arg) if (xe_debug >= (level)) printf arg 214 #define XE_MII_DUMP(scp) if (xe_debug >= 3) xe_mii_dump(scp) 215 #if 0 216 #define XE_REG_DUMP(scp) if (xe_debug >= 3) xe_reg_dump(scp) 217 #endif 218 #else 219 #define DEVPRINTF(level, arg) 220 #define DPRINTF(level, arg) 221 #define XE_MII_DUMP(scp) 222 #if 0 223 #define XE_REG_DUMP(scp) 224 #endif 225 #endif 226 227 /* 228 * Attach a device. 229 */ 230 int 231 xe_attach(device_t dev) 232 { 233 struct xe_softc *scp = device_get_softc(dev); 234 int err; 235 236 DEVPRINTF(2, (dev, "attach\n")); 237 238 /* Initialise stuff... */ 239 scp->dev = dev; 240 scp->ifp = if_alloc(IFT_ETHER); 241 if (scp->ifp == NULL) 242 return (ENOSPC); 243 scp->ifm = &scp->ifmedia; 244 scp->autoneg_status = XE_AUTONEG_NONE; 245 mtx_init(&scp->lock, device_get_nameunit(dev), MTX_NETWORK_LOCK, 246 MTX_DEF); 247 callout_init_mtx(&scp->wdog_timer, &scp->lock, 0); 248 249 /* Initialise the ifnet structure */ 250 scp->ifp->if_softc = scp; 251 if_initname(scp->ifp, device_get_name(dev), device_get_unit(dev)); 252 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 253 scp->ifp->if_linkmib = &scp->mibdata; 254 scp->ifp->if_linkmiblen = sizeof(scp->mibdata); 255 scp->ifp->if_start = xe_start; 256 scp->ifp->if_ioctl = xe_ioctl; 257 scp->ifp->if_init = xe_init; 258 scp->ifp->if_baudrate = 100000000; 259 IFQ_SET_MAXLEN(&scp->ifp->if_snd, ifqmaxlen); 260 261 /* Initialise the ifmedia structure */ 262 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status); 263 callout_init_mtx(&scp->media_timer, &scp->lock, 0); 264 265 /* Add supported media types */ 266 if (scp->mohawk) { 267 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL); 268 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); 269 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); 270 } 271 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 272 if (scp->ce2) 273 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL); 274 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL); 275 276 /* Default is to autoselect best supported media type */ 277 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO); 278 279 /* Get the hardware into a known state */ 280 XE_LOCK(scp); 281 xe_reset(scp); 282 XE_UNLOCK(scp); 283 284 /* Get hardware version numbers */ 285 XE_SELECT_PAGE(4); 286 scp->version = XE_INB(XE_BOV); 287 if (scp->mohawk) 288 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4; 289 else 290 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4; 291 292 /* Print some useful information */ 293 device_printf(dev, "version 0x%02x/0x%02x%s%s\n", scp->version, 294 scp->srev, scp->mohawk ? ", 100Mbps capable" : "", 295 scp->modem ? ", with modem" : ""); 296 if (scp->mohawk) { 297 XE_SELECT_PAGE(0x10); 298 DEVPRINTF(1, (dev, 299 "DingoID=0x%04x, RevisionID=0x%04x, VendorID=0x%04x\n", 300 XE_INW(XE_DINGOID), XE_INW(XE_RevID), XE_INW(XE_VendorID))); 301 } 302 if (scp->ce2) { 303 XE_SELECT_PAGE(0x45); 304 DEVPRINTF(1, (dev, "CE2 version = 0x%02x\n", XE_INB(XE_REV))); 305 } 306 307 /* Attach the interface */ 308 ether_ifattach(scp->ifp, scp->enaddr); 309 310 err = bus_setup_intr(dev, scp->irq_res, INTR_TYPE_NET | INTR_MPSAFE, 311 NULL, xe_intr, scp, &scp->intrhand); 312 if (err) { 313 ether_ifdetach(scp->ifp); 314 mtx_destroy(&scp->lock); 315 return (err); 316 } 317 318 /* Done */ 319 return (0); 320 } 321 322 /* 323 * Complete hardware intitialisation and enable output. Exits without doing 324 * anything if there's no address assigned to the card, or if media selection 325 * is in progress (the latter implies we've already run this function). 326 */ 327 static void 328 xe_init(void *xscp) 329 { 330 struct xe_softc *scp = xscp; 331 332 XE_LOCK(scp); 333 xe_init_locked(scp); 334 XE_UNLOCK(scp); 335 } 336 337 static void 338 xe_init_locked(struct xe_softc *scp) 339 { 340 unsigned i; 341 342 if (scp->autoneg_status != XE_AUTONEG_NONE) 343 return; 344 345 DEVPRINTF(2, (scp->dev, "init\n")); 346 347 /* Reset transmitter flags */ 348 scp->tx_queued = 0; 349 scp->tx_tpr = 0; 350 scp->tx_timeouts = 0; 351 scp->tx_thres = 64; 352 scp->tx_min = ETHER_MIN_LEN - ETHER_CRC_LEN; 353 scp->tx_timeout = 0; 354 355 /* Soft reset the card */ 356 XE_SELECT_PAGE(0); 357 XE_OUTB(XE_CR, XE_CR_SOFT_RESET); 358 DELAY(40000); 359 XE_OUTB(XE_CR, 0); 360 DELAY(40000); 361 362 if (scp->mohawk) { 363 /* 364 * set GP1 and GP2 as outputs (bits 2 & 3) 365 * set GP1 low to power on the ML6692 (bit 0) 366 * set GP2 high to power on the 10Mhz chip (bit 1) 367 */ 368 XE_SELECT_PAGE(4); 369 XE_OUTB(XE_GPR0, XE_GPR0_GP2_SELECT | XE_GPR0_GP1_SELECT | 370 XE_GPR0_GP2_OUT); 371 } 372 373 /* Shut off interrupts */ 374 xe_disable_intr(scp); 375 376 /* Wait for everything to wake up */ 377 DELAY(500000); 378 379 /* Check for PHY */ 380 if (scp->mohawk) 381 scp->phy_ok = xe_mii_init(scp); 382 383 /* Disable 'source insertion' (not sure what that means) */ 384 XE_SELECT_PAGE(0x42); 385 XE_OUTB(XE_SWC0, XE_SWC0_NO_SRC_INSERT); 386 387 /* Set 8K/24K Tx/Rx buffer split */ 388 if (scp->srev != 1) { 389 XE_SELECT_PAGE(2); 390 XE_OUTW(XE_RBS, 0x2000); 391 } 392 393 /* Enable early transmit mode on Mohawk/Dingo */ 394 if (scp->mohawk) { 395 XE_SELECT_PAGE(0x03); 396 XE_OUTW(XE_TPT, scp->tx_thres); 397 XE_SELECT_PAGE(0x01); 398 XE_OUTB(XE_ECR, XE_INB(XE_ECR) | XE_ECR_EARLY_TX); 399 } 400 401 /* Put MAC address in first 'individual address' register */ 402 XE_SELECT_PAGE(0x50); 403 for (i = 0; i < ETHER_ADDR_LEN; i++) 404 XE_OUTB(0x08 + i, IF_LLADDR(scp->ifp)[scp->mohawk ? 5 - i : i]); 405 406 /* Set up multicast addresses */ 407 xe_set_multicast(scp); 408 409 /* Fix the receive data offset -- reset can leave it off-by-one */ 410 XE_SELECT_PAGE(0); 411 XE_OUTW(XE_DO, 0x2000); 412 413 /* Set interrupt masks */ 414 XE_SELECT_PAGE(1); 415 XE_OUTB(XE_IMR0, XE_IMR0_TX_PACKET | XE_IMR0_MAC_INTR | 416 XE_IMR0_RX_PACKET); 417 418 /* Set MAC interrupt masks */ 419 XE_SELECT_PAGE(0x40); 420 XE_OUTB(XE_RX0Msk, 421 ~(XE_RX0M_RX_OVERRUN | XE_RX0M_CRC_ERROR | XE_RX0M_ALIGN_ERROR | 422 XE_RX0M_LONG_PACKET)); 423 XE_OUTB(XE_TX0Msk, 424 ~(XE_TX0M_SQE_FAIL | XE_TX0M_LATE_COLLISION | XE_TX0M_TX_UNDERRUN | 425 XE_TX0M_16_COLLISIONS | XE_TX0M_NO_CARRIER)); 426 427 /* Clear MAC status registers */ 428 XE_SELECT_PAGE(0x40); 429 XE_OUTB(XE_RST0, 0x00); 430 XE_OUTB(XE_TXST0, 0x00); 431 432 /* Enable receiver and put MAC online */ 433 XE_SELECT_PAGE(0x40); 434 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); 435 436 /* Set up IMR, enable interrupts */ 437 xe_enable_intr(scp); 438 439 /* Start media selection */ 440 xe_setmedia(scp); 441 442 /* Enable output */ 443 scp->ifp->if_drv_flags |= IFF_DRV_RUNNING; 444 scp->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 445 callout_reset(&scp->wdog_timer, hz, xe_watchdog, scp); 446 } 447 448 /* 449 * Start output on interface. Should be called at splimp() priority. Check 450 * that the output is idle (ie, IFF_DRV_OACTIVE is not set) before calling this 451 * function. If media selection is in progress we set IFF_DRV_OACTIVE ourselves 452 * and return immediately. 453 */ 454 static void 455 xe_start(struct ifnet *ifp) 456 { 457 struct xe_softc *scp = ifp->if_softc; 458 459 XE_LOCK(scp); 460 xe_start_locked(ifp); 461 XE_UNLOCK(scp); 462 } 463 464 static void 465 xe_start_locked(struct ifnet *ifp) 466 { 467 struct xe_softc *scp = ifp->if_softc; 468 struct mbuf *mbp; 469 470 if (scp->autoneg_status != XE_AUTONEG_NONE) { 471 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 472 return; 473 } 474 475 DEVPRINTF(3, (scp->dev, "start\n")); 476 477 /* 478 * Loop while there are packets to be sent, and space to send 479 * them. 480 */ 481 for (;;) { 482 /* Suck a packet off the send queue */ 483 IF_DEQUEUE(&ifp->if_snd, mbp); 484 485 if (mbp == NULL) { 486 /* 487 * We are using the !OACTIVE flag to indicate 488 * to the outside world that we can accept an 489 * additional packet rather than that the 490 * transmitter is _actually_ active. Indeed, 491 * the transmitter may be active, but if we 492 * haven't filled all the buffers with data 493 * then we still want to accept more. 494 */ 495 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 496 return; 497 } 498 499 if (xe_pio_write_packet(scp, mbp) != 0) { 500 /* Push the packet back onto the queue */ 501 IF_PREPEND(&ifp->if_snd, mbp); 502 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 503 return; 504 } 505 506 /* Tap off here if there is a bpf listener */ 507 BPF_MTAP(ifp, mbp); 508 509 /* In case we don't hear from the card again... */ 510 scp->tx_timeout = 5; 511 scp->tx_queued++; 512 513 m_freem(mbp); 514 } 515 } 516 517 /* 518 * Process an ioctl request. Adapted from the ed driver. 519 */ 520 static int 521 xe_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 522 { 523 struct xe_softc *scp; 524 int error; 525 526 scp = ifp->if_softc; 527 error = 0; 528 529 switch (command) { 530 case SIOCSIFFLAGS: 531 DEVPRINTF(2, (scp->dev, "ioctl: SIOCSIFFLAGS: 0x%04x\n", 532 ifp->if_flags)); 533 /* 534 * If the interface is marked up and stopped, then 535 * start it. If it is marked down and running, then 536 * stop it. 537 */ 538 XE_LOCK(scp); 539 if (ifp->if_flags & IFF_UP) { 540 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 541 xe_reset(scp); 542 xe_init_locked(scp); 543 } 544 } else { 545 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 546 xe_stop(scp); 547 } 548 549 /* handle changes to PROMISC/ALLMULTI flags */ 550 xe_set_multicast(scp); 551 XE_UNLOCK(scp); 552 error = 0; 553 break; 554 case SIOCADDMULTI: 555 case SIOCDELMULTI: 556 DEVPRINTF(2, (scp->dev, "ioctl: SIOC{ADD,DEL}MULTI\n")); 557 /* 558 * Multicast list has (maybe) changed; set the 559 * hardware filters accordingly. 560 */ 561 XE_LOCK(scp); 562 xe_set_multicast(scp); 563 XE_UNLOCK(scp); 564 error = 0; 565 break; 566 case SIOCSIFMEDIA: 567 case SIOCGIFMEDIA: 568 DEVPRINTF(3, (scp->dev, "ioctl: bounce to ifmedia_ioctl\n")); 569 /* 570 * Someone wants to get/set media options. 571 */ 572 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, 573 command); 574 break; 575 default: 576 DEVPRINTF(3, (scp->dev, "ioctl: bounce to ether_ioctl\n")); 577 error = ether_ioctl(ifp, command, data); 578 } 579 580 return (error); 581 } 582 583 /* 584 * Card interrupt handler. 585 * 586 * This function is probably more complicated than it needs to be, as it 587 * attempts to deal with the case where multiple packets get sent between 588 * interrupts. This is especially annoying when working out the collision 589 * stats. Not sure whether this case ever really happens or not (maybe on a 590 * slow/heavily loaded machine?) so it's probably best to leave this like it 591 * is. 592 * 593 * Note that the crappy PIO used to get packets on and off the card means that 594 * you will spend a lot of time in this routine -- I can get my P150 to spend 595 * 90% of its time servicing interrupts if I really hammer the network. Could 596 * fix this, but then you'd start dropping/losing packets. The moral of this 597 * story? If you want good network performance _and_ some cycles left over to 598 * get your work done, don't buy a Xircom card. Or convince them to tell me 599 * how to do memory-mapped I/O :) 600 */ 601 static void 602 xe_txintr(struct xe_softc *scp, uint8_t txst1) 603 { 604 struct ifnet *ifp; 605 uint8_t tpr, sent, coll; 606 607 ifp = scp->ifp; 608 609 /* Update packet count, accounting for rollover */ 610 tpr = XE_INB(XE_TPR); 611 sent = -scp->tx_tpr + tpr; 612 613 /* Update statistics if we actually sent anything */ 614 if (sent > 0) { 615 coll = txst1 & XE_TXST1_RETRY_COUNT; 616 scp->tx_tpr = tpr; 617 scp->tx_queued -= sent; 618 if_inc_counter(ifp, IFCOUNTER_OPACKETS, sent); 619 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, coll); 620 621 /* 622 * According to the Xircom manual, Dingo will 623 * sometimes manage to transmit a packet with 624 * triggering an interrupt. If this happens, we have 625 * sent > 1 and the collision count only reflects 626 * collisions on the last packet sent (the one that 627 * triggered the interrupt). Collision stats might 628 * therefore be a bit low, but there doesn't seem to 629 * be anything we can do about that. 630 */ 631 switch (coll) { 632 case 0: 633 break; 634 case 1: 635 scp->mibdata.dot3StatsSingleCollisionFrames++; 636 scp->mibdata.dot3StatsCollFrequencies[0]++; 637 break; 638 default: 639 scp->mibdata.dot3StatsMultipleCollisionFrames++; 640 scp->mibdata.dot3StatsCollFrequencies[coll-1]++; 641 } 642 } 643 scp->tx_timeout = 0; 644 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 645 } 646 647 /* Handle most MAC interrupts */ 648 static void 649 xe_macintr(struct xe_softc *scp, uint8_t rst0, uint8_t txst0, uint8_t txst1) 650 { 651 struct ifnet *ifp; 652 653 ifp = scp->ifp; 654 655 #if 0 656 /* Carrier sense lost -- only in 10Mbit HDX mode */ 657 if (txst0 & XE_TXST0_NO_CARRIER || !(txst1 & XE_TXST1_LINK_STATUS)) { 658 /* XXX - Need to update media status here */ 659 device_printf(scp->dev, "no carrier\n"); 660 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 661 scp->mibdata.dot3StatsCarrierSenseErrors++; 662 } 663 #endif 664 /* Excessive collisions -- try sending again */ 665 if (txst0 & XE_TXST0_16_COLLISIONS) { 666 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 16); 667 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 668 scp->mibdata.dot3StatsExcessiveCollisions++; 669 scp->mibdata.dot3StatsMultipleCollisionFrames++; 670 scp->mibdata.dot3StatsCollFrequencies[15]++; 671 XE_OUTB(XE_CR, XE_CR_RESTART_TX); 672 } 673 674 /* Transmit underrun -- increase early transmit threshold */ 675 if (txst0 & XE_TXST0_TX_UNDERRUN && scp->mohawk) { 676 DEVPRINTF(1, (scp->dev, "transmit underrun")); 677 if (scp->tx_thres < ETHER_MAX_LEN) { 678 if ((scp->tx_thres += 64) > ETHER_MAX_LEN) 679 scp->tx_thres = ETHER_MAX_LEN; 680 DPRINTF(1, (": increasing transmit threshold to %u", 681 scp->tx_thres)); 682 XE_SELECT_PAGE(0x3); 683 XE_OUTW(XE_TPT, scp->tx_thres); 684 XE_SELECT_PAGE(0x0); 685 } 686 DPRINTF(1, ("\n")); 687 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 688 scp->mibdata.dot3StatsInternalMacTransmitErrors++; 689 } 690 691 /* Late collision -- just complain about it */ 692 if (txst0 & XE_TXST0_LATE_COLLISION) { 693 device_printf(scp->dev, "late collision\n"); 694 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 695 scp->mibdata.dot3StatsLateCollisions++; 696 } 697 698 /* SQE test failure -- just complain about it */ 699 if (txst0 & XE_TXST0_SQE_FAIL) { 700 device_printf(scp->dev, "SQE test failure\n"); 701 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 702 scp->mibdata.dot3StatsSQETestErrors++; 703 } 704 705 /* Packet too long -- what happens to these */ 706 if (rst0 & XE_RST0_LONG_PACKET) { 707 device_printf(scp->dev, "received giant packet\n"); 708 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 709 scp->mibdata.dot3StatsFrameTooLongs++; 710 } 711 712 /* CRC error -- packet dropped */ 713 if (rst0 & XE_RST0_CRC_ERROR) { 714 device_printf(scp->dev, "CRC error\n"); 715 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 716 scp->mibdata.dot3StatsFCSErrors++; 717 } 718 } 719 720 static void 721 xe_rxintr(struct xe_softc *scp, uint8_t rst0) 722 { 723 struct ifnet *ifp; 724 uint8_t esr, rsr; 725 726 ifp = scp->ifp; 727 728 /* Handle received packet(s) */ 729 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) { 730 rsr = XE_INB(XE_RSR); 731 732 DEVPRINTF(3, (scp->dev, "intr: ESR=0x%02x, RSR=0x%02x\n", esr, 733 rsr)); 734 735 /* Make sure packet is a good one */ 736 if (rsr & XE_RSR_RX_OK) { 737 struct ether_header *ehp; 738 struct mbuf *mbp; 739 uint16_t len; 740 741 len = XE_INW(XE_RBC) - ETHER_CRC_LEN; 742 743 DEVPRINTF(3, (scp->dev, "intr: receive length = %d\n", 744 len)); 745 746 if (len == 0) { 747 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 748 continue; 749 } 750 751 /* 752 * Allocate mbuf to hold received packet. If 753 * the mbuf header isn't big enough, we attach 754 * an mbuf cluster to hold the packet. Note 755 * the +=2 to align the packet data on a 756 * 32-bit boundary, and the +3 to allow for 757 * the possibility of reading one more byte 758 * than the actual packet length (we always 759 * read 16-bit words). XXX - Surely there's a 760 * better way to do this alignment? 761 */ 762 MGETHDR(mbp, M_NOWAIT, MT_DATA); 763 if (mbp == NULL) { 764 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 765 continue; 766 } 767 768 if (len + 3 > MHLEN) { 769 if (!(MCLGET(mbp, M_NOWAIT))) { 770 m_freem(mbp); 771 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 772 continue; 773 } 774 } 775 776 mbp->m_data += 2; 777 ehp = mtod(mbp, struct ether_header *); 778 779 /* 780 * Now get the packet in PIO mode, including 781 * the Ethernet header but omitting the 782 * trailing CRC. 783 */ 784 785 /* 786 * Work around a bug in CE2 cards. There 787 * seems to be a problem with duplicated and 788 * extraneous bytes in the receive buffer, but 789 * without any real documentation for the CE2 790 * it's hard to tell for sure. XXX - Needs 791 * testing on CE2 hardware 792 */ 793 if (scp->srev == 0) { 794 u_short rhs; 795 796 XE_SELECT_PAGE(5); 797 rhs = XE_INW(XE_RHSA); 798 XE_SELECT_PAGE(0); 799 800 rhs += 3; /* Skip control info */ 801 802 if (rhs >= 0x8000) 803 rhs = 0; 804 805 if (rhs + len > 0x8000) { 806 int i; 807 808 for (i = 0; i < len; i++, rhs++) { 809 ((char *)ehp)[i] = 810 XE_INB(XE_EDP); 811 if (rhs == 0x8000) { 812 rhs = 0; 813 i--; 814 } 815 } 816 } else 817 bus_read_multi_2(scp->port_res, XE_EDP, 818 (uint16_t *)ehp, (len + 1) >> 1); 819 } else 820 bus_read_multi_2(scp->port_res, XE_EDP, 821 (uint16_t *)ehp, (len + 1) >> 1); 822 823 /* Deliver packet to upper layers */ 824 mbp->m_pkthdr.rcvif = ifp; 825 mbp->m_pkthdr.len = mbp->m_len = len; 826 XE_UNLOCK(scp); 827 (*ifp->if_input)(ifp, mbp); 828 XE_LOCK(scp); 829 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); 830 831 } else if (rsr & XE_RSR_ALIGN_ERROR) { 832 /* Packet alignment error -- drop packet */ 833 device_printf(scp->dev, "alignment error\n"); 834 scp->mibdata.dot3StatsAlignmentErrors++; 835 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 836 } 837 838 /* Skip to next packet, if there is one */ 839 XE_OUTW(XE_DO, 0x8000); 840 } 841 842 /* Clear receiver overruns now we have some free buffer space */ 843 if (rst0 & XE_RST0_RX_OVERRUN) { 844 DEVPRINTF(1, (scp->dev, "receive overrun\n")); 845 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 846 scp->mibdata.dot3StatsInternalMacReceiveErrors++; 847 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN); 848 } 849 } 850 851 static void 852 xe_intr(void *xscp) 853 { 854 struct xe_softc *scp = (struct xe_softc *) xscp; 855 struct ifnet *ifp; 856 uint8_t psr, isr, rst0, txst0, txst1; 857 858 ifp = scp->ifp; 859 XE_LOCK(scp); 860 861 /* Disable interrupts */ 862 if (scp->mohawk) 863 XE_OUTB(XE_CR, 0); 864 865 /* Cache current register page */ 866 psr = XE_INB(XE_PR); 867 868 /* Read ISR to see what caused this interrupt */ 869 while ((isr = XE_INB(XE_ISR)) != 0) { 870 871 /* 0xff might mean the card is no longer around */ 872 if (isr == 0xff) { 873 DEVPRINTF(3, (scp->dev, 874 "intr: interrupt received for missing card?\n")); 875 break; 876 } 877 878 /* Read other status registers */ 879 XE_SELECT_PAGE(0x40); 880 rst0 = XE_INB(XE_RST0); 881 XE_OUTB(XE_RST0, 0); 882 txst0 = XE_INB(XE_TXST0); 883 txst1 = XE_INB(XE_TXST1); 884 XE_OUTB(XE_TXST0, 0); 885 XE_OUTB(XE_TXST1, 0); 886 XE_SELECT_PAGE(0); 887 888 DEVPRINTF(3, (scp->dev, 889 "intr: ISR=0x%02x, RST=0x%02x, TXT=0x%02x%02x\n", isr, 890 rst0, txst1, txst0)); 891 892 if (isr & XE_ISR_TX_PACKET) 893 xe_txintr(scp, txst1); 894 895 if (isr & XE_ISR_MAC_INTR) 896 xe_macintr(scp, rst0, txst0, txst1); 897 898 xe_rxintr(scp, rst0); 899 } 900 901 /* Restore saved page */ 902 XE_SELECT_PAGE(psr); 903 904 /* Re-enable interrupts */ 905 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); 906 907 XE_UNLOCK(scp); 908 } 909 910 /* 911 * Device timeout/watchdog routine. Called automatically if we queue a packet 912 * for transmission but don't get an interrupt within a specified timeout 913 * (usually 5 seconds). When this happens we assume the worst and reset the 914 * card. 915 */ 916 static void 917 xe_watchdog(void *arg) 918 { 919 struct xe_softc *scp = arg; 920 921 XE_ASSERT_LOCKED(scp); 922 923 if (scp->tx_timeout && --scp->tx_timeout == 0) { 924 device_printf(scp->dev, "watchdog timeout: resetting card\n"); 925 scp->tx_timeouts++; 926 if_inc_counter(scp->ifp, IFCOUNTER_OERRORS, scp->tx_queued); 927 xe_stop(scp); 928 xe_reset(scp); 929 xe_init_locked(scp); 930 } 931 callout_reset(&scp->wdog_timer, hz, xe_watchdog, scp); 932 } 933 934 /* 935 * Change media selection. 936 */ 937 static int 938 xe_media_change(struct ifnet *ifp) 939 { 940 struct xe_softc *scp = ifp->if_softc; 941 942 DEVPRINTF(2, (scp->dev, "media_change\n")); 943 944 XE_LOCK(scp); 945 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER) { 946 XE_UNLOCK(scp); 947 return(EINVAL); 948 } 949 950 /* 951 * Some card/media combos aren't always possible -- filter 952 * those out here. 953 */ 954 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO || 955 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok) { 956 XE_UNLOCK(scp); 957 return (EINVAL); 958 } 959 960 xe_setmedia(scp); 961 XE_UNLOCK(scp); 962 963 return (0); 964 } 965 966 /* 967 * Return current media selection. 968 */ 969 static void 970 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) 971 { 972 struct xe_softc *scp = ifp->if_softc; 973 974 DEVPRINTF(3, (scp->dev, "media_status\n")); 975 976 /* XXX - This is clearly wrong. Will fix once I have CE2 working */ 977 XE_LOCK(scp); 978 mrp->ifm_status = IFM_AVALID | IFM_ACTIVE; 979 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media; 980 XE_UNLOCK(scp); 981 } 982 983 /* 984 * Select active media. 985 */ 986 static void 987 xe_setmedia(void *xscp) 988 { 989 struct xe_softc *scp = xscp; 990 uint16_t bmcr, bmsr, anar, lpar; 991 992 DEVPRINTF(2, (scp->dev, "setmedia\n")); 993 994 XE_ASSERT_LOCKED(scp); 995 996 /* Cancel any pending timeout */ 997 callout_stop(&scp->media_timer); 998 xe_disable_intr(scp); 999 1000 /* Select media */ 1001 scp->media = IFM_ETHER; 1002 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) { 1003 1004 case IFM_AUTO: /* Autoselect media */ 1005 scp->media = IFM_ETHER|IFM_AUTO; 1006 1007 /* 1008 * Autoselection is really awful. It goes something like this: 1009 * 1010 * Wait until the transmitter goes idle (2sec timeout). 1011 * Reset card 1012 * IF a 100Mbit PHY exists 1013 * Start NWAY autonegotiation (3.5sec timeout) 1014 * IF that succeeds 1015 * Select 100baseTX or 10baseT, whichever was detected 1016 * ELSE 1017 * Reset card 1018 * IF a 100Mbit PHY exists 1019 * Try to force a 100baseTX link (3sec timeout) 1020 * IF that succeeds 1021 * Select 100baseTX 1022 * ELSE 1023 * Disable the PHY 1024 * ENDIF 1025 * ENDIF 1026 * ENDIF 1027 * ENDIF 1028 * IF nothing selected so far 1029 * IF a 100Mbit PHY exists 1030 * Select 10baseT 1031 * ELSE 1032 * Select 10baseT or 10base2, whichever is connected 1033 * ENDIF 1034 * ENDIF 1035 */ 1036 switch (scp->autoneg_status) { 1037 case XE_AUTONEG_NONE: 1038 DEVPRINTF(2, (scp->dev, 1039 "Waiting for idle transmitter\n")); 1040 scp->ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1041 scp->autoneg_status = XE_AUTONEG_WAITING; 1042 /* FALL THROUGH */ 1043 case XE_AUTONEG_WAITING: 1044 if (scp->tx_queued != 0) { 1045 callout_reset(&scp->media_timer, hz / 2, 1046 xe_setmedia, scp); 1047 return; 1048 } 1049 if (scp->phy_ok) { 1050 DEVPRINTF(2, (scp->dev, 1051 "Starting autonegotiation\n")); 1052 bmcr = xe_phy_readreg(scp, PHY_BMCR); 1053 bmcr &= ~(PHY_BMCR_AUTONEGENBL); 1054 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1055 anar = xe_phy_readreg(scp, PHY_ANAR); 1056 anar &= ~(PHY_ANAR_100BT4 | 1057 PHY_ANAR_100BTXFULL | PHY_ANAR_10BTFULL); 1058 anar |= PHY_ANAR_100BTXHALF | PHY_ANAR_10BTHALF; 1059 xe_phy_writereg(scp, PHY_ANAR, anar); 1060 bmcr |= PHY_BMCR_AUTONEGENBL | 1061 PHY_BMCR_AUTONEGRSTR; 1062 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1063 scp->autoneg_status = XE_AUTONEG_STARTED; 1064 callout_reset(&scp->media_timer, hz * 7/2, 1065 xe_setmedia, scp); 1066 return; 1067 } else { 1068 scp->autoneg_status = XE_AUTONEG_FAIL; 1069 } 1070 break; 1071 case XE_AUTONEG_STARTED: 1072 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1073 lpar = xe_phy_readreg(scp, PHY_LPAR); 1074 if (bmsr & (PHY_BMSR_AUTONEGCOMP | PHY_BMSR_LINKSTAT)) { 1075 DEVPRINTF(2, (scp->dev, 1076 "Autonegotiation complete!\n")); 1077 1078 /* 1079 * XXX - Shouldn't have to do this, 1080 * but (on my hub at least) the 1081 * transmitter won't work after a 1082 * successful autoneg. So we see what 1083 * the negotiation result was and 1084 * force that mode. I'm sure there is 1085 * an easy fix for this. 1086 */ 1087 if (lpar & PHY_LPAR_100BTXHALF) { 1088 xe_phy_writereg(scp, PHY_BMCR, 1089 PHY_BMCR_SPEEDSEL); 1090 XE_MII_DUMP(scp); 1091 XE_SELECT_PAGE(2); 1092 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1093 scp->media = IFM_ETHER | IFM_100_TX; 1094 scp->autoneg_status = XE_AUTONEG_NONE; 1095 } else { 1096 /* 1097 * XXX - Bit of a hack going 1098 * on in here. This is 1099 * derived from Ken Hughes 1100 * patch to the Linux driver 1101 * to make it work with 10Mbit 1102 * _autonegotiated_ links on 1103 * CE3B cards. What's a CE3B 1104 * and how's it differ from a 1105 * plain CE3? these are the 1106 * things we need to find out. 1107 */ 1108 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1109 XE_SELECT_PAGE(2); 1110 /* BEGIN HACK */ 1111 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1112 XE_SELECT_PAGE(0x42); 1113 XE_OUTB(XE_SWC1, 0x80); 1114 scp->media = IFM_ETHER | IFM_10_T; 1115 scp->autoneg_status = XE_AUTONEG_NONE; 1116 /* END HACK */ 1117 #if 0 1118 /* Display PHY? */ 1119 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); 1120 scp->autoneg_status = XE_AUTONEG_FAIL; 1121 #endif 1122 } 1123 } else { 1124 DEVPRINTF(2, (scp->dev, 1125 "Autonegotiation failed; trying 100baseTX\n")); 1126 XE_MII_DUMP(scp); 1127 if (scp->phy_ok) { 1128 xe_phy_writereg(scp, PHY_BMCR, 1129 PHY_BMCR_SPEEDSEL); 1130 scp->autoneg_status = XE_AUTONEG_100TX; 1131 callout_reset(&scp->media_timer, hz * 3, 1132 xe_setmedia, scp); 1133 return; 1134 } else { 1135 scp->autoneg_status = XE_AUTONEG_FAIL; 1136 } 1137 } 1138 break; 1139 case XE_AUTONEG_100TX: 1140 (void)xe_phy_readreg(scp, PHY_BMSR); 1141 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1142 if (bmsr & PHY_BMSR_LINKSTAT) { 1143 DEVPRINTF(2, (scp->dev, 1144 "Got 100baseTX link!\n")); 1145 XE_MII_DUMP(scp); 1146 XE_SELECT_PAGE(2); 1147 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1148 scp->media = IFM_ETHER | IFM_100_TX; 1149 scp->autoneg_status = XE_AUTONEG_NONE; 1150 } else { 1151 DEVPRINTF(2, (scp->dev, 1152 "Autonegotiation failed; disabling PHY\n")); 1153 XE_MII_DUMP(scp); 1154 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1155 XE_SELECT_PAGE(2); 1156 1157 /* Disable PHY? */ 1158 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); 1159 scp->autoneg_status = XE_AUTONEG_FAIL; 1160 } 1161 break; 1162 } 1163 1164 /* 1165 * If we got down here _and_ autoneg_status is 1166 * XE_AUTONEG_FAIL, then either autonegotiation 1167 * failed, or never got started to begin with. In 1168 * either case, select a suitable 10Mbit media and 1169 * hope it works. We don't need to reset the card 1170 * again, since it will have been done already by the 1171 * big switch above. 1172 */ 1173 if (scp->autoneg_status == XE_AUTONEG_FAIL) { 1174 DEVPRINTF(2, (scp->dev, "Selecting 10baseX\n")); 1175 if (scp->mohawk) { 1176 XE_SELECT_PAGE(0x42); 1177 XE_OUTB(XE_SWC1, 0x80); 1178 scp->media = IFM_ETHER | IFM_10_T; 1179 scp->autoneg_status = XE_AUTONEG_NONE; 1180 } else { 1181 XE_SELECT_PAGE(4); 1182 XE_OUTB(XE_GPR0, 4); 1183 DELAY(50000); 1184 XE_SELECT_PAGE(0x42); 1185 XE_OUTB(XE_SWC1, 1186 (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 1187 0x80 : 0xc0); 1188 scp->media = IFM_ETHER | ((XE_INB(XE_ESR) & 1189 XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2); 1190 scp->autoneg_status = XE_AUTONEG_NONE; 1191 } 1192 } 1193 break; 1194 1195 /* 1196 * If a specific media has been requested, we just reset the 1197 * card and select it (one small exception -- if 100baseTX is 1198 * requested but there is no PHY, we fall back to 10baseT 1199 * operation). 1200 */ 1201 case IFM_100_TX: /* Force 100baseTX */ 1202 if (scp->phy_ok) { 1203 DEVPRINTF(2, (scp->dev, "Selecting 100baseTX\n")); 1204 XE_SELECT_PAGE(0x42); 1205 XE_OUTB(XE_SWC1, 0); 1206 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1207 XE_SELECT_PAGE(2); 1208 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1209 scp->media |= IFM_100_TX; 1210 break; 1211 } 1212 /* FALLTHROUGH */ 1213 case IFM_10_T: /* Force 10baseT */ 1214 DEVPRINTF(2, (scp->dev, "Selecting 10baseT\n")); 1215 if (scp->phy_ok) { 1216 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1217 XE_SELECT_PAGE(2); 1218 1219 /* Disable PHY */ 1220 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); 1221 } 1222 XE_SELECT_PAGE(0x42); 1223 XE_OUTB(XE_SWC1, 0x80); 1224 scp->media |= IFM_10_T; 1225 break; 1226 case IFM_10_2: 1227 DEVPRINTF(2, (scp->dev, "Selecting 10base2\n")); 1228 XE_SELECT_PAGE(0x42); 1229 XE_OUTB(XE_SWC1, 0xc0); 1230 scp->media |= IFM_10_2; 1231 break; 1232 } 1233 1234 /* 1235 * Finally, the LEDs are set to match whatever media was 1236 * chosen and the transmitter is unblocked. 1237 */ 1238 DEVPRINTF(2, (scp->dev, "Setting LEDs\n")); 1239 XE_SELECT_PAGE(2); 1240 switch (IFM_SUBTYPE(scp->media)) { 1241 case IFM_100_TX: 1242 case IFM_10_T: 1243 XE_OUTB(XE_LED, 0x3b); 1244 if (scp->dingo) 1245 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */ 1246 break; 1247 case IFM_10_2: 1248 XE_OUTB(XE_LED, 0x3a); 1249 break; 1250 } 1251 1252 /* Restart output? */ 1253 xe_enable_intr(scp); 1254 scp->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1255 xe_start_locked(scp->ifp); 1256 } 1257 1258 /* 1259 * Hard reset (power cycle) the card. 1260 */ 1261 static void 1262 xe_reset(struct xe_softc *scp) 1263 { 1264 1265 DEVPRINTF(2, (scp->dev, "reset\n")); 1266 1267 XE_ASSERT_LOCKED(scp); 1268 1269 /* Power down */ 1270 XE_SELECT_PAGE(4); 1271 XE_OUTB(XE_GPR1, 0); 1272 DELAY(40000); 1273 1274 /* Power up again */ 1275 if (scp->mohawk) 1276 XE_OUTB(XE_GPR1, XE_GPR1_POWER_DOWN); 1277 else 1278 XE_OUTB(XE_GPR1, XE_GPR1_POWER_DOWN | XE_GPR1_AIC); 1279 1280 DELAY(40000); 1281 XE_SELECT_PAGE(0); 1282 } 1283 1284 /* 1285 * Take interface offline. This is done by powering down the device, which I 1286 * assume means just shutting down the transceiver and Ethernet logic. This 1287 * requires a _hard_ reset to recover from, as we need to power up again. 1288 */ 1289 void 1290 xe_stop(struct xe_softc *scp) 1291 { 1292 1293 DEVPRINTF(2, (scp->dev, "stop\n")); 1294 1295 XE_ASSERT_LOCKED(scp); 1296 1297 /* 1298 * Shut off interrupts. 1299 */ 1300 xe_disable_intr(scp); 1301 1302 /* 1303 * Power down. 1304 */ 1305 XE_SELECT_PAGE(4); 1306 XE_OUTB(XE_GPR1, 0); 1307 XE_SELECT_PAGE(0); 1308 if (scp->mohawk) { 1309 /* 1310 * set GP1 and GP2 as outputs (bits 2 & 3) 1311 * set GP1 high to power on the ML6692 (bit 0) 1312 * set GP2 low to power on the 10Mhz chip (bit 1) 1313 */ 1314 XE_SELECT_PAGE(4); 1315 XE_OUTB(XE_GPR0, XE_GPR0_GP2_SELECT | XE_GPR0_GP1_SELECT | 1316 XE_GPR0_GP1_OUT); 1317 } 1318 1319 /* 1320 * ~IFF_DRV_RUNNING == interface down. 1321 */ 1322 scp->ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1323 scp->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1324 scp->tx_timeout = 0; 1325 callout_stop(&scp->wdog_timer); 1326 callout_stop(&scp->media_timer); 1327 } 1328 1329 /* 1330 * Enable interrupts from the card. 1331 */ 1332 static void 1333 xe_enable_intr(struct xe_softc *scp) 1334 { 1335 1336 DEVPRINTF(2, (scp->dev, "enable_intr\n")); 1337 1338 XE_SELECT_PAGE(0); 1339 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */ 1340 if (scp->modem && !scp->dingo) { /* This bit is just magic */ 1341 if (!(XE_INB(0x10) & 0x01)) { 1342 XE_OUTB(0x10, 0x11); /* Unmask master int enable */ 1343 } 1344 } 1345 } 1346 1347 /* 1348 * Disable interrupts from the card. 1349 */ 1350 static void 1351 xe_disable_intr(struct xe_softc *scp) 1352 { 1353 1354 DEVPRINTF(2, (scp->dev, "disable_intr\n")); 1355 1356 XE_SELECT_PAGE(0); 1357 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 1358 if (scp->modem && !scp->dingo) { /* More magic */ 1359 XE_OUTB(0x10, 0x10); /* Mask the master int enable */ 1360 } 1361 } 1362 1363 /* 1364 * Set up multicast filter and promiscuous modes. 1365 */ 1366 static void 1367 xe_set_multicast(struct xe_softc *scp) 1368 { 1369 struct ifnet *ifp; 1370 struct ifmultiaddr *maddr; 1371 unsigned count, i; 1372 1373 DEVPRINTF(2, (scp->dev, "set_multicast\n")); 1374 1375 ifp = scp->ifp; 1376 XE_SELECT_PAGE(0x42); 1377 1378 /* Handle PROMISC flag */ 1379 if (ifp->if_flags & IFF_PROMISC) { 1380 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) | XE_SWC1_PROMISCUOUS); 1381 return; 1382 } else 1383 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) & ~XE_SWC1_PROMISCUOUS); 1384 1385 /* Handle ALLMULTI flag */ 1386 if (ifp->if_flags & IFF_ALLMULTI) { 1387 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) | XE_SWC1_ALLMULTI); 1388 return; 1389 } else 1390 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI); 1391 1392 /* Iterate over multicast address list */ 1393 count = 0; 1394 if_maddr_rlock(ifp); 1395 TAILQ_FOREACH(maddr, &ifp->if_multiaddrs, ifma_link) { 1396 if (maddr->ifma_addr->sa_family != AF_LINK) 1397 continue; 1398 1399 count++; 1400 1401 if (count < 10) 1402 /* 1403 * First 9 use Individual Addresses for exact 1404 * matching. 1405 */ 1406 xe_set_addr(scp, 1407 LLADDR((struct sockaddr_dl *)maddr->ifma_addr), 1408 count); 1409 else if (scp->mohawk) 1410 /* Use hash filter on Mohawk and Dingo */ 1411 xe_mchash(scp, 1412 LLADDR((struct sockaddr_dl *)maddr->ifma_addr)); 1413 else 1414 /* Nowhere else to put them on CE2 */ 1415 break; 1416 } 1417 if_maddr_runlock(ifp); 1418 1419 DEVPRINTF(2, (scp->dev, "set_multicast: count = %u\n", count)); 1420 1421 /* Now do some cleanup and enable multicast handling as needed */ 1422 if (count == 0) { 1423 /* Disable all multicast handling */ 1424 XE_SELECT_PAGE(0x42); 1425 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) & 1426 ~(XE_SWC1_IA_ENABLE | XE_SWC1_ALLMULTI)); 1427 if (scp->mohawk) { 1428 XE_SELECT_PAGE(0x02); 1429 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE); 1430 } 1431 } else if (count < 10) { 1432 /* 1433 * Full in any unused Individual Addresses with our 1434 * MAC address. 1435 */ 1436 for (i = count + 1; i < 10; i++) 1437 xe_set_addr(scp, IF_LLADDR(scp->ifp), i); 1438 1439 /* Enable Individual Address matching only */ 1440 XE_SELECT_PAGE(0x42); 1441 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI) | 1442 XE_SWC1_IA_ENABLE); 1443 if (scp->mohawk) { 1444 XE_SELECT_PAGE(0x02); 1445 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE); 1446 } 1447 } else if (scp->mohawk) { 1448 /* Check whether hash table is full */ 1449 XE_SELECT_PAGE(0x58); 1450 for (i = 0x08; i < 0x10; i++) 1451 if (XE_INB(i) != 0xff) 1452 break; 1453 if (i == 0x10) { 1454 /* 1455 * Hash table full - enable 1456 * promiscuous multicast matching 1457 */ 1458 XE_SELECT_PAGE(0x42); 1459 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & 1460 ~XE_SWC1_IA_ENABLE) | XE_SWC1_ALLMULTI); 1461 XE_SELECT_PAGE(0x02); 1462 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE); 1463 } else { 1464 /* Enable hash table and Individual Address matching */ 1465 XE_SELECT_PAGE(0x42); 1466 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI) | 1467 XE_SWC1_IA_ENABLE); 1468 XE_SELECT_PAGE(0x02); 1469 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | XE_MSR_HASH_TABLE); 1470 } 1471 } else { 1472 /* Enable promiscuous multicast matching */ 1473 XE_SELECT_PAGE(0x42); 1474 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_IA_ENABLE) | 1475 XE_SWC1_ALLMULTI); 1476 } 1477 1478 XE_SELECT_PAGE(0); 1479 } 1480 1481 /* 1482 * Copy the Ethernet multicast address in addr to the on-chip registers for 1483 * Individual Address idx. Assumes that addr is really a multicast address 1484 * and that idx > 0 (slot 0 is always used for the card MAC address). 1485 */ 1486 static void 1487 xe_set_addr(struct xe_softc *scp, uint8_t* addr, unsigned idx) 1488 { 1489 uint8_t page, reg; 1490 unsigned i; 1491 1492 /* 1493 * Individual Addresses are stored in registers 8-F of pages 1494 * 0x50-0x57. IA1 therefore starts at register 0xE on page 1495 * 0x50. The expressions below compute the starting page and 1496 * register for any IA index > 0. 1497 */ 1498 --idx; 1499 page = 0x50 + idx % 4 + idx / 4 * 3; 1500 reg = 0x0e - 2 * (idx % 4); 1501 1502 DEVPRINTF(3, (scp->dev, 1503 "set_addr: idx = %u, page = 0x%02x, reg = 0x%02x\n", idx + 1, page, 1504 reg)); 1505 1506 /* 1507 * Copy the IA bytes. Note that the byte order is reversed 1508 * for Mohawk and Dingo wrt. CE2 hardware. 1509 */ 1510 XE_SELECT_PAGE(page); 1511 for (i = 0; i < ETHER_ADDR_LEN; i++) { 1512 if (i > 0) { 1513 DPRINTF(3, (":%02x", addr[i])); 1514 } else { 1515 DEVPRINTF(3, (scp->dev, "set_addr: %02x", addr[0])); 1516 } 1517 XE_OUTB(reg, addr[scp->mohawk ? 5 - i : i]); 1518 if (++reg == 0x10) { 1519 reg = 0x08; 1520 XE_SELECT_PAGE(++page); 1521 } 1522 } 1523 DPRINTF(3, ("\n")); 1524 } 1525 1526 /* 1527 * Set the appropriate bit in the multicast hash table for the supplied 1528 * Ethernet multicast address addr. Assumes that addr is really a multicast 1529 * address. 1530 */ 1531 static void 1532 xe_mchash(struct xe_softc* scp, const uint8_t *addr) 1533 { 1534 int bit; 1535 uint8_t byte, hash; 1536 1537 hash = ether_crc32_le(addr, ETHER_ADDR_LEN) & 0x3F; 1538 1539 /* 1540 * Top 3 bits of hash give register - 8, bottom 3 give bit 1541 * within register. 1542 */ 1543 byte = hash >> 3 | 0x08; 1544 bit = 0x01 << (hash & 0x07); 1545 1546 DEVPRINTF(3, (scp->dev, 1547 "set_hash: hash = 0x%02x, byte = 0x%02x, bit = 0x%02x\n", hash, 1548 byte, bit)); 1549 1550 XE_SELECT_PAGE(0x58); 1551 XE_OUTB(byte, XE_INB(byte) | bit); 1552 } 1553 1554 /* 1555 * Write an outgoing packet to the card using programmed I/O. 1556 */ 1557 static int 1558 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) 1559 { 1560 unsigned len, pad; 1561 unsigned char wantbyte; 1562 uint8_t *data; 1563 uint8_t savebyte[2]; 1564 1565 /* Get total packet length */ 1566 if (mbp->m_flags & M_PKTHDR) 1567 len = mbp->m_pkthdr.len; 1568 else { 1569 struct mbuf* mbp2 = mbp; 1570 for (len = 0; mbp2 != NULL; 1571 len += mbp2->m_len, mbp2 = mbp2->m_next); 1572 } 1573 1574 DEVPRINTF(3, (scp->dev, "pio_write_packet: len = %u\n", len)); 1575 1576 /* Packets < minimum length may need to be padded out */ 1577 pad = 0; 1578 if (len < scp->tx_min) { 1579 pad = scp->tx_min - len; 1580 len = scp->tx_min; 1581 } 1582 1583 /* Check transmit buffer space */ 1584 XE_SELECT_PAGE(0); 1585 XE_OUTW(XE_TRS, len + 2); /* Only effective on rev. 1 CE2 cards */ 1586 if ((XE_INW(XE_TSO) & 0x7fff) <= len + 2) 1587 return (1); 1588 1589 /* Send packet length to card */ 1590 XE_OUTW(XE_EDP, len); 1591 1592 /* 1593 * Write packet to card using PIO (code stolen from the ed driver) 1594 */ 1595 wantbyte = 0; 1596 while (mbp != NULL) { 1597 len = mbp->m_len; 1598 if (len > 0) { 1599 data = mtod(mbp, caddr_t); 1600 if (wantbyte) { /* Finish the last word */ 1601 savebyte[1] = *data; 1602 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1603 data++; 1604 len--; 1605 wantbyte = 0; 1606 } 1607 if (len > 1) { /* Output contiguous words */ 1608 bus_write_multi_2(scp->port_res, XE_EDP, 1609 (uint16_t *)data, len >> 1); 1610 data += len & ~1; 1611 len &= 1; 1612 } 1613 if (len == 1) { /* Save last byte, if needed */ 1614 savebyte[0] = *data; 1615 wantbyte = 1; 1616 } 1617 } 1618 mbp = mbp->m_next; 1619 } 1620 1621 /* 1622 * Send last byte of odd-length packets 1623 */ 1624 if (wantbyte) 1625 XE_OUTB(XE_EDP, savebyte[0]); 1626 1627 /* 1628 * Can just tell CE3 cards to send; short packets will be 1629 * padded out with random cruft automatically. For CE2, 1630 * manually pad the packet with garbage; it will be sent when 1631 * the required number of bytes have been delivered to the 1632 * card. 1633 */ 1634 if (scp->mohawk) 1635 XE_OUTB(XE_CR, XE_CR_TX_PACKET | XE_CR_RESTART_TX | 1636 XE_CR_ENABLE_INTR); 1637 else if (pad > 0) { 1638 if (pad & 0x01) 1639 XE_OUTB(XE_EDP, 0xaa); 1640 pad >>= 1; 1641 while (pad > 0) { 1642 XE_OUTW(XE_EDP, 0xdead); 1643 pad--; 1644 } 1645 } 1646 1647 return (0); 1648 } 1649 1650 /************************************************************** 1651 * * 1652 * M I I F U N C T I O N S * 1653 * * 1654 **************************************************************/ 1655 1656 /* 1657 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't 1658 * seem to work any better than the xirc2_ps stuff, but it's cleaner code. 1659 * XXX - this stuff shouldn't be here. It should all be abstracted off to 1660 * XXX - some kind of common MII-handling code, shared by all drivers. But 1661 * XXX - that's a whole other mission. 1662 */ 1663 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x)) 1664 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x)) 1665 1666 /* 1667 * Sync the PHYs by setting data bit and strobing the clock 32 times. 1668 */ 1669 static void 1670 xe_mii_sync(struct xe_softc *scp) 1671 { 1672 int i; 1673 1674 XE_SELECT_PAGE(2); 1675 XE_MII_SET(XE_MII_DIR|XE_MII_WRD); 1676 1677 for (i = 0; i < 32; i++) { 1678 XE_MII_SET(XE_MII_CLK); 1679 DELAY(1); 1680 XE_MII_CLR(XE_MII_CLK); 1681 DELAY(1); 1682 } 1683 } 1684 1685 /* 1686 * Look for a MII-compliant PHY. If we find one, reset it. 1687 */ 1688 static int 1689 xe_mii_init(struct xe_softc *scp) 1690 { 1691 uint16_t status; 1692 1693 status = xe_phy_readreg(scp, PHY_BMSR); 1694 if ((status & 0xff00) != 0x7800) { 1695 DEVPRINTF(2, (scp->dev, "no PHY found, %0x\n", status)); 1696 return (0); 1697 } else { 1698 DEVPRINTF(2, (scp->dev, "PHY OK!\n")); 1699 1700 /* Reset the PHY */ 1701 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET); 1702 DELAY(500); 1703 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET) 1704 ; /* nothing */ 1705 XE_MII_DUMP(scp); 1706 return (1); 1707 } 1708 } 1709 1710 /* 1711 * Clock a series of bits through the MII. 1712 */ 1713 static void 1714 xe_mii_send(struct xe_softc *scp, uint32_t bits, int cnt) 1715 { 1716 int i; 1717 1718 XE_SELECT_PAGE(2); 1719 XE_MII_CLR(XE_MII_CLK); 1720 1721 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 1722 if (bits & i) { 1723 XE_MII_SET(XE_MII_WRD); 1724 } else { 1725 XE_MII_CLR(XE_MII_WRD); 1726 } 1727 DELAY(1); 1728 XE_MII_CLR(XE_MII_CLK); 1729 DELAY(1); 1730 XE_MII_SET(XE_MII_CLK); 1731 } 1732 } 1733 1734 /* 1735 * Read an PHY register through the MII. 1736 */ 1737 static int 1738 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) 1739 { 1740 int i, ack; 1741 1742 XE_ASSERT_LOCKED(scp); 1743 1744 /* 1745 * Set up frame for RX. 1746 */ 1747 frame->mii_stdelim = XE_MII_STARTDELIM; 1748 frame->mii_opcode = XE_MII_READOP; 1749 frame->mii_turnaround = 0; 1750 frame->mii_data = 0; 1751 1752 XE_SELECT_PAGE(2); 1753 XE_OUTB(XE_GPR2, 0); 1754 1755 /* 1756 * Turn on data xmit. 1757 */ 1758 XE_MII_SET(XE_MII_DIR); 1759 1760 xe_mii_sync(scp); 1761 1762 /* 1763 * Send command/address info. 1764 */ 1765 xe_mii_send(scp, frame->mii_stdelim, 2); 1766 xe_mii_send(scp, frame->mii_opcode, 2); 1767 xe_mii_send(scp, frame->mii_phyaddr, 5); 1768 xe_mii_send(scp, frame->mii_regaddr, 5); 1769 1770 /* Idle bit */ 1771 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD)); 1772 DELAY(1); 1773 XE_MII_SET(XE_MII_CLK); 1774 DELAY(1); 1775 1776 /* Turn off xmit. */ 1777 XE_MII_CLR(XE_MII_DIR); 1778 1779 /* Check for ack */ 1780 XE_MII_CLR(XE_MII_CLK); 1781 DELAY(1); 1782 ack = XE_INB(XE_GPR2) & XE_MII_RDD; 1783 XE_MII_SET(XE_MII_CLK); 1784 DELAY(1); 1785 1786 /* 1787 * Now try reading data bits. If the ack failed, we still 1788 * need to clock through 16 cycles to keep the PHY(s) in sync. 1789 */ 1790 if (ack) { 1791 for(i = 0; i < 16; i++) { 1792 XE_MII_CLR(XE_MII_CLK); 1793 DELAY(1); 1794 XE_MII_SET(XE_MII_CLK); 1795 DELAY(1); 1796 } 1797 goto fail; 1798 } 1799 1800 for (i = 0x8000; i; i >>= 1) { 1801 XE_MII_CLR(XE_MII_CLK); 1802 DELAY(1); 1803 if (!ack) { 1804 if (XE_INB(XE_GPR2) & XE_MII_RDD) 1805 frame->mii_data |= i; 1806 DELAY(1); 1807 } 1808 XE_MII_SET(XE_MII_CLK); 1809 DELAY(1); 1810 } 1811 1812 fail: 1813 XE_MII_CLR(XE_MII_CLK); 1814 DELAY(1); 1815 XE_MII_SET(XE_MII_CLK); 1816 DELAY(1); 1817 1818 if (ack) 1819 return(1); 1820 return(0); 1821 } 1822 1823 /* 1824 * Write to a PHY register through the MII. 1825 */ 1826 static int 1827 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) 1828 { 1829 1830 XE_ASSERT_LOCKED(scp); 1831 1832 /* 1833 * Set up frame for TX. 1834 */ 1835 frame->mii_stdelim = XE_MII_STARTDELIM; 1836 frame->mii_opcode = XE_MII_WRITEOP; 1837 frame->mii_turnaround = XE_MII_TURNAROUND; 1838 1839 XE_SELECT_PAGE(2); 1840 1841 /* 1842 * Turn on data output. 1843 */ 1844 XE_MII_SET(XE_MII_DIR); 1845 1846 xe_mii_sync(scp); 1847 1848 xe_mii_send(scp, frame->mii_stdelim, 2); 1849 xe_mii_send(scp, frame->mii_opcode, 2); 1850 xe_mii_send(scp, frame->mii_phyaddr, 5); 1851 xe_mii_send(scp, frame->mii_regaddr, 5); 1852 xe_mii_send(scp, frame->mii_turnaround, 2); 1853 xe_mii_send(scp, frame->mii_data, 16); 1854 1855 /* Idle bit. */ 1856 XE_MII_SET(XE_MII_CLK); 1857 DELAY(1); 1858 XE_MII_CLR(XE_MII_CLK); 1859 DELAY(1); 1860 1861 /* 1862 * Turn off xmit. 1863 */ 1864 XE_MII_CLR(XE_MII_DIR); 1865 1866 return(0); 1867 } 1868 1869 /* 1870 * Read a register from the PHY. 1871 */ 1872 static uint16_t 1873 xe_phy_readreg(struct xe_softc *scp, uint16_t reg) 1874 { 1875 struct xe_mii_frame frame; 1876 1877 bzero((char *)&frame, sizeof(frame)); 1878 1879 frame.mii_phyaddr = 0; 1880 frame.mii_regaddr = reg; 1881 xe_mii_readreg(scp, &frame); 1882 1883 return (frame.mii_data); 1884 } 1885 1886 /* 1887 * Write to a PHY register. 1888 */ 1889 static void 1890 xe_phy_writereg(struct xe_softc *scp, uint16_t reg, uint16_t data) 1891 { 1892 struct xe_mii_frame frame; 1893 1894 bzero((char *)&frame, sizeof(frame)); 1895 1896 frame.mii_phyaddr = 0; 1897 frame.mii_regaddr = reg; 1898 frame.mii_data = data; 1899 xe_mii_writereg(scp, &frame); 1900 } 1901 1902 /* 1903 * A bit of debugging code. 1904 */ 1905 static void 1906 xe_mii_dump(struct xe_softc *scp) 1907 { 1908 int i; 1909 1910 device_printf(scp->dev, "MII registers: "); 1911 for (i = 0; i < 2; i++) { 1912 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 1913 } 1914 for (i = 4; i < 7; i++) { 1915 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 1916 } 1917 printf("\n"); 1918 } 1919 1920 #if 0 1921 void 1922 xe_reg_dump(struct xe_softc *scp) 1923 { 1924 int page, i; 1925 1926 device_printf(scp->dev, "Common registers: "); 1927 for (i = 0; i < 8; i++) { 1928 printf(" %2.2x", XE_INB(i)); 1929 } 1930 printf("\n"); 1931 1932 for (page = 0; page <= 8; page++) { 1933 device_printf(scp->dev, "Register page %2.2x: ", page); 1934 XE_SELECT_PAGE(page); 1935 for (i = 8; i < 16; i++) { 1936 printf(" %2.2x", XE_INB(i)); 1937 } 1938 printf("\n"); 1939 } 1940 1941 for (page = 0x10; page < 0x5f; page++) { 1942 if ((page >= 0x11 && page <= 0x3f) || 1943 (page == 0x41) || 1944 (page >= 0x43 && page <= 0x4f) || 1945 (page >= 0x59)) 1946 continue; 1947 device_printf(scp->dev, "Register page %2.2x: ", page); 1948 XE_SELECT_PAGE(page); 1949 for (i = 8; i < 16; i++) { 1950 printf(" %2.2x", XE_INB(i)); 1951 } 1952 printf("\n"); 1953 } 1954 } 1955 #endif 1956 1957 int 1958 xe_activate(device_t dev) 1959 { 1960 struct xe_softc *sc = device_get_softc(dev); 1961 int start, i; 1962 1963 DEVPRINTF(2, (dev, "activate\n")); 1964 1965 if (!sc->modem) { 1966 sc->port_rid = 0; /* 0 is managed by pccard */ 1967 sc->port_res = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, 1968 &sc->port_rid, 16, RF_ACTIVE); 1969 } else if (sc->dingo) { 1970 /* 1971 * Find a 16 byte aligned ioport for the card. 1972 */ 1973 DEVPRINTF(1, (dev, "Finding an aligned port for RealPort\n")); 1974 sc->port_rid = 1; /* 0 is managed by pccard */ 1975 start = 0x100; 1976 do { 1977 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, 1978 &sc->port_rid, start, 0x3ff, 16, RF_ACTIVE); 1979 if (sc->port_res == NULL) 1980 break; 1981 if ((rman_get_start(sc->port_res) & 0xf) == 0) 1982 break; 1983 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 1984 sc->port_res); 1985 start = (rman_get_start(sc->port_res) + 15) & ~0xf; 1986 } while (1); 1987 DEVPRINTF(1, (dev, "RealPort port 0x%0jx, size 0x%0jx\n", 1988 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 1989 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid))); 1990 } else if (sc->ce2) { 1991 /* 1992 * Find contiguous I/O port for the Ethernet function 1993 * on CEM2 and CEM3 cards. We allocate window 0 1994 * wherever pccard has decided it should be, then find 1995 * an available window adjacent to it for the second 1996 * function. Not sure that both windows are actually 1997 * needed. 1998 */ 1999 DEVPRINTF(1, (dev, "Finding I/O port for CEM2/CEM3\n")); 2000 sc->ce2_port_rid = 0; /* 0 is managed by pccard */ 2001 sc->ce2_port_res = bus_alloc_resource_anywhere(dev, 2002 SYS_RES_IOPORT, &sc->ce2_port_rid, 8, RF_ACTIVE); 2003 if (sc->ce2_port_res == NULL) { 2004 DEVPRINTF(1, (dev, 2005 "Cannot allocate I/O port for modem\n")); 2006 xe_deactivate(dev); 2007 return (ENOMEM); 2008 } 2009 2010 sc->port_rid = 1; 2011 start = bus_get_resource_start(dev, SYS_RES_IOPORT, 2012 sc->ce2_port_rid); 2013 for (i = 0; i < 2; i++) { 2014 start += (i == 0 ? 8 : -24); 2015 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, 2016 &sc->port_rid, start, start + 15, 16, RF_ACTIVE); 2017 if (sc->port_res == NULL) 2018 continue; 2019 if (bus_get_resource_start(dev, SYS_RES_IOPORT, 2020 sc->port_rid) == start) 2021 break; 2022 2023 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2024 sc->port_res); 2025 sc->port_res = NULL; 2026 } 2027 DEVPRINTF(1, (dev, "CEM2/CEM3 port 0x%0jx, size 0x%0jx\n", 2028 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 2029 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid))); 2030 } 2031 2032 if (!sc->port_res) { 2033 DEVPRINTF(1, (dev, "Cannot allocate ioport\n")); 2034 xe_deactivate(dev); 2035 return (ENOMEM); 2036 } 2037 2038 sc->irq_rid = 0; 2039 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 2040 RF_ACTIVE); 2041 if (sc->irq_res == NULL) { 2042 DEVPRINTF(1, (dev, "Cannot allocate irq\n")); 2043 xe_deactivate(dev); 2044 return (ENOMEM); 2045 } 2046 2047 return (0); 2048 } 2049 2050 void 2051 xe_deactivate(device_t dev) 2052 { 2053 struct xe_softc *sc = device_get_softc(dev); 2054 2055 DEVPRINTF(2, (dev, "deactivate\n")); 2056 if (sc->intrhand) 2057 bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 2058 sc->intrhand = NULL; 2059 if (sc->port_res) 2060 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2061 sc->port_res); 2062 sc->port_res = NULL; 2063 if (sc->ce2_port_res) 2064 bus_release_resource(dev, SYS_RES_IOPORT, sc->ce2_port_rid, 2065 sc->ce2_port_res); 2066 sc->ce2_port_res = NULL; 2067 if (sc->irq_res) 2068 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, 2069 sc->irq_res); 2070 sc->irq_res = NULL; 2071 if (sc->ifp) 2072 if_free(sc->ifp); 2073 sc->ifp = NULL; 2074 }
Cache object: 867395db383a61a42a11c5be67a2032a
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