1 /*- 2 * Copyright (c) 1998, 1999 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 * $Id: if_xe.c,v 1.20 1999/06/13 19:17:40 scott Exp $ 27 * $FreeBSD: src/sys/dev/xe/if_xe.c,v 1.13.2.6 2003/02/05 22:03:57 mbr Exp $ 28 * $DragonFly: src/sys/dev/netif/xe/if_xe.c,v 1.26 2005/07/13 17:46:05 joerg Exp $ 29 */ 30 31 /* 32 * XXX TODO XXX 33 * 34 * I've pushed this fairly far, but there are some things that need to be 35 * done here. I'm documenting them here in case I get destracted. -- imp 36 * 37 * xe_cem56fix -- need to figure out how to map the extra stuff. 38 */ 39 40 /* 41 * Portions of this software were derived from Werner Koch's xirc2ps driver 42 * for Linux under the terms of the following license (from v1.30 of the 43 * xirc2ps driver): 44 * 45 * Copyright (c) 1997 by Werner Koch (dd9jn) 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, and the entire permission notice in its entirety, 52 * including the disclaimer of warranties. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. The name of the author may not be used to endorse or promote 57 * products derived from this software without specific prior 58 * written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 61 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 63 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 64 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 65 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 66 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 68 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 69 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 70 * OF THE POSSIBILITY OF SUCH DAMAGE. 71 */ 72 73 /* 74 * FreeBSD device driver for Xircom CreditCard PCMCIA Ethernet adapters. The 75 * following cards are currently known to work with the driver: 76 * Xircom CreditCard 10/100 (CE3) 77 * Xircom CreditCard Ethernet + Modem 28 (CEM28) 78 * Xircom CreditCard Ethernet 10/100 + Modem 56 (CEM56) 79 * Xircom RealPort Ethernet 10 80 * Xircom RealPort Ethernet 10/100 81 * Xircom RealPort Ethernet 10/100 + Modem 56 (REM56, REM56G) 82 * Intel EtherExpress Pro/100 PC Card Mobile Adapter 16 (Pro/100 M16A) 83 * Compaq Netelligent 10/100 PC Card (CPQ-10/100) 84 * 85 * Some other cards *should* work, but support for them is either broken or in 86 * an unknown state at the moment. I'm always interested in hearing from 87 * people who own any of these cards: 88 * Xircom CreditCard 10Base-T (PS-CE2-10) 89 * Xircom CreditCard Ethernet + ModemII (CEM2) 90 * Xircom CEM28 and CEM33 Ethernet/Modem cards (may be variants of CEM2?) 91 * 92 * Thanks to all who assisted with the development and testing of the driver, 93 * especially: Werner Koch, Duke Kamstra, Duncan Barclay, Jason George, Dru 94 * Nelson, Mike Kephart, Bill Rainey and Douglas Rand. Apologies if I've left 95 * out anyone who deserves a mention here. 96 * 97 * Special thanks to Ade Lovett for both hosting the mailing list and doing 98 * the CEM56/REM56 support code; and the FreeBSD UK Users' Group for hosting 99 * the web pages. 100 * 101 * Contact points: 102 * 103 * Driver web page: http://ukug.uk.freebsd.org/~scott/xe_drv/ 104 * 105 * Mailing list: http://www.lovett.com/lists/freebsd-xircom/ 106 * or send "subscribe freebsd-xircom" to <majordomo@lovett.com> 107 * 108 * Author email: <scott@uk.freebsd.org> 109 */ 110 111 112 #include <sys/param.h> 113 #include <sys/cdefs.h> 114 #include <sys/errno.h> 115 #include <sys/kernel.h> 116 #include <sys/mbuf.h> 117 #include <sys/select.h> 118 #include <sys/socket.h> 119 #include <sys/sockio.h> 120 #include <sys/systm.h> 121 #include <sys/uio.h> 122 #include <sys/thread2.h> 123 124 #include <sys/module.h> 125 #include <sys/bus.h> 126 127 #include <machine/bus.h> 128 #include <machine/resource.h> 129 #include <sys/rman.h> 130 131 #include <net/ethernet.h> 132 #include <net/if.h> 133 #include <net/ifq_var.h> 134 #include <net/if_arp.h> 135 #include <net/if_dl.h> 136 #include <net/if_media.h> 137 #include <net/if_mib.h> 138 #include <net/bpf.h> 139 140 #include "if_xereg.h" 141 #include "if_xevar.h" 142 143 /* 144 * MII command structure 145 */ 146 struct xe_mii_frame { 147 u_int8_t mii_stdelim; 148 u_int8_t mii_opcode; 149 u_int8_t mii_phyaddr; 150 u_int8_t mii_regaddr; 151 u_int8_t mii_turnaround; 152 u_int16_t mii_data; 153 }; 154 155 /* 156 * Media autonegotiation progress constants 157 */ 158 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */ 159 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */ 160 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */ 161 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */ 162 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */ 163 164 165 /* 166 * Prototypes start here 167 */ 168 static void xe_init (void *xscp); 169 static void xe_intr (void *xscp); 170 static void xe_start (struct ifnet *ifp); 171 static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *); 172 static void xe_watchdog (struct ifnet *ifp); 173 static int xe_media_change (struct ifnet *ifp); 174 static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp); 175 static timeout_t xe_setmedia; 176 static void xe_hard_reset (struct xe_softc *scp); 177 static void xe_soft_reset (struct xe_softc *scp); 178 static void xe_stop (struct xe_softc *scp); 179 static void xe_enable_intr (struct xe_softc *scp); 180 static void xe_disable_intr (struct xe_softc *scp); 181 static void xe_setmulti (struct xe_softc *scp); 182 static void xe_setaddrs (struct xe_softc *scp); 183 static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp); 184 #if 0 185 static u_int32_t xe_compute_crc (u_int8_t *data, int len); 186 static int xe_compute_hashbit (u_int32_t crc); 187 #endif 188 189 /* 190 * MII functions 191 */ 192 static void xe_mii_sync (struct xe_softc *scp); 193 static int xe_mii_init (struct xe_softc *scp); 194 static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt); 195 static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame); 196 static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame); 197 static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg); 198 static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data); 199 200 /* 201 * Debug functions -- uncomment for VERY verbose dignostic information. 202 * Set to 1 for less verbose information 203 */ 204 /* #define XE_DEBUG 2 */ 205 #ifdef XE_DEBUG 206 #define XE_REG_DUMP(scp) xe_reg_dump((scp)) 207 #define XE_MII_DUMP(scp) xe_mii_dump((scp)) 208 static void xe_reg_dump (struct xe_softc *scp); 209 static void xe_mii_dump (struct xe_softc *scp); 210 #else 211 #define XE_REG_DUMP(scp) 212 #define XE_MII_DUMP(scp) 213 #endif 214 215 /* 216 * The device entry is being removed, probably because someone ejected the 217 * card. The interface should have been brought down manually before calling 218 * this function; if not you may well lose packets. In any case, I shut down 219 * the card and the interface, and hope for the best. 220 */ 221 int 222 xe_detach(device_t dev) 223 { 224 struct xe_softc *sc = device_get_softc(dev); 225 226 crit_enter(); 227 228 sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING; 229 callout_stop(&sc->xe_timer); 230 ether_ifdetach(&sc->arpcom.ac_if); 231 bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 232 233 crit_exit(); 234 235 xe_deactivate(dev); 236 return 0; 237 } 238 239 /* 240 * Attach a device. 241 */ 242 int 243 xe_attach (device_t dev) 244 { 245 struct xe_softc *scp = device_get_softc(dev); 246 int err; 247 248 #ifdef XE_DEBUG 249 device_printf(dev, "attach\n"); 250 #endif 251 252 /* Fill in some private data */ 253 scp->ifp = &scp->arpcom.ac_if; 254 scp->ifm = &scp->ifmedia; 255 scp->autoneg_status = 0; 256 257 /* Hopefully safe to read this here */ 258 XE_SELECT_PAGE(4); 259 scp->version = XE_INB(XE_BOV); 260 261 /* Initialise the ifnet structure */ 262 scp->ifp->if_softc = scp; 263 if_initname(scp->ifp, device_get_name(dev), device_get_unit(dev)); 264 scp->ifp->if_timer = 0; 265 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 266 scp->ifp->if_linkmib = &scp->mibdata; 267 scp->ifp->if_linkmiblen = sizeof scp->mibdata; 268 scp->ifp->if_start = xe_start; 269 scp->ifp->if_ioctl = xe_ioctl; 270 scp->ifp->if_watchdog = xe_watchdog; 271 scp->ifp->if_init = xe_init; 272 ifq_set_maxlen(&scp->ifp->if_snd, IFQ_MAXLEN); 273 ifq_set_ready(&scp->ifp->if_snd); 274 275 /* Initialise the ifmedia structure */ 276 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status); 277 callout_init(&scp->xe_timer); 278 279 /* 280 * Fill in supported media types. Some cards _do_ support full duplex 281 * operation, but this driver doesn't, yet. Therefore we leave those modes 282 * out of the list. We support some form of autoselection in all cases. 283 */ 284 if (scp->mohawk) { 285 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL); 286 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 287 } 288 else { 289 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 290 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL); 291 } 292 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL); 293 294 /* Default is to autoselect best supported media type */ 295 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO); 296 297 /* Print some useful information */ 298 device_printf(dev, "%s %s, bonding version %#x%s%s\n", 299 scp->vendor, 300 scp->card_type, 301 scp->version, 302 scp->mohawk ? ", 100Mbps capable" : "", 303 scp->modem ? ", with modem" : ""); 304 if (scp->mohawk) { 305 XE_SELECT_PAGE(0x10); 306 device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n", 307 XE_INW(XE_DINGOID), 308 XE_INW(XE_RevID), 309 XE_INW(XE_VendorID)); 310 } 311 if (scp->ce2) { 312 XE_SELECT_PAGE(0x45); 313 device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV)); 314 } 315 316 /* Attach the interface */ 317 ether_ifattach(scp->ifp, scp->arpcom.ac_enaddr); 318 319 err = bus_setup_intr(dev, scp->irq_res, INTR_TYPE_NET, xe_intr, scp, 320 &scp->intrhand, NULL); 321 if (err) { 322 ether_ifdetach(&scp->arpcom.ac_if); 323 xe_deactivate(dev); 324 return err; 325 } 326 327 /* Done */ 328 return 0; 329 } 330 331 332 /* 333 * Initialize device. Completes the reset procedure on the card and starts 334 * output. If there's an autonegotiation in progress we DON'T do anything; 335 * the media selection code will call us again when it's done. 336 */ 337 static void 338 xe_init(void *xscp) { 339 struct xe_softc *scp = xscp; 340 341 #ifdef XE_DEBUG 342 if_printf(scp->ifp, "init\n"); 343 #endif 344 345 /* Reset transmitter flags */ 346 scp->tx_queued = 0; 347 scp->tx_tpr = 0; 348 scp->tx_collisions = 0; 349 scp->ifp->if_timer = 0; 350 351 crit_enter(); 352 353 XE_SELECT_PAGE(0x42); 354 XE_OUTB(XE_SWC0, 0x20); /* Disable source insertion (WTF is that?) */ 355 356 /* 357 * Set the 'local memory dividing line' -- splits the 32K card memory into 358 * 8K for transmit buffers and 24K for receive. This is done automatically 359 * on newer revision cards. 360 */ 361 if (scp->srev != 1) { 362 XE_SELECT_PAGE(2); 363 XE_OUTW(XE_RBS, 0x2000); 364 } 365 366 /* Set up multicast addresses */ 367 xe_setmulti(scp); 368 369 /* Fix the data offset register -- reset leaves it off-by-one */ 370 XE_SELECT_PAGE(0); 371 XE_OUTW(XE_DO, 0x2000); 372 373 /* 374 * Set MAC interrupt masks and clear status regs. The bit names are direct 375 * from the Linux code; I have no idea what most of them do. 376 */ 377 XE_SELECT_PAGE(0x40); /* Bit 7..0 */ 378 XE_OUTB(XE_RX0Msk, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */ 379 XE_OUTB(XE_TX0Msk, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ 380 XE_OUTB(XE_TX0Msk+1, 0xb0); /* rsv, rsv, PTD, EXT, rsv, rsv, rsv, rsv */ 381 XE_OUTB(XE_RST0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */ 382 XE_OUTB(XE_TXST0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ 383 XE_OUTB(XE_TXST1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */ 384 385 /* 386 * Check for an in-progress autonegotiation. If one is active, just set 387 * IFF_RUNNING and return. The media selection code will call us again when 388 * it's done. 389 */ 390 if (scp->autoneg_status) { 391 scp->ifp->if_flags |= IFF_RUNNING; 392 } 393 else { 394 /* Enable receiver, put MAC online */ 395 XE_SELECT_PAGE(0x40); 396 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); 397 398 /* Set up IMR, enable interrupts */ 399 xe_enable_intr(scp); 400 401 /* Attempt to start output */ 402 scp->ifp->if_flags |= IFF_RUNNING; 403 scp->ifp->if_flags &= ~IFF_OACTIVE; 404 xe_start(scp->ifp); 405 } 406 407 crit_exit(); 408 } 409 410 411 /* 412 * Start output on interface. We make two assumptions here: 413 * 1) that we are in a critical section _before_ this code 414 * is called *and* is returned to the appropriate priority after 415 * return 416 * 2) that the IFF_OACTIVE flag is checked before this code is called 417 * (i.e. that the output part of the interface is idle) 418 */ 419 static void 420 xe_start(struct ifnet *ifp) { 421 struct xe_softc *scp = ifp->if_softc; 422 struct mbuf *mbp; 423 424 /* 425 * Loop while there are packets to be sent, and space to send them. 426 */ 427 while (1) { 428 mbp = ifq_poll(&ifp->if_snd); /* Suck a packet off the send queue */ 429 430 if (mbp == NULL) { 431 /* 432 * We are using the !OACTIVE flag to indicate to the outside world that 433 * we can accept an additional packet rather than that the transmitter 434 * is _actually_ active. Indeed, the transmitter may be active, but if 435 * we haven't filled all the buffers with data then we still want to 436 * accept more. 437 */ 438 ifp->if_flags &= ~IFF_OACTIVE; 439 return; 440 } 441 442 if (xe_pio_write_packet(scp, mbp) != 0) { 443 ifp->if_flags |= IFF_OACTIVE; 444 return; 445 } 446 447 mbp = ifq_dequeue(&ifp->if_snd); 448 BPF_MTAP(ifp, mbp); 449 450 ifp->if_timer = 5; /* In case we don't hear from the card again */ 451 scp->tx_queued++; 452 453 m_freem(mbp); 454 } 455 } 456 457 458 /* 459 * Process an ioctl request. Adapted from the ed driver. 460 */ 461 static int 462 xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) { 463 struct xe_softc *scp; 464 int error; 465 466 scp = ifp->if_softc; 467 error = 0; 468 469 crit_enter(); 470 471 switch (command) { 472 473 case SIOCSIFFLAGS: 474 /* 475 * If the interface is marked up and stopped, then start it. If it is 476 * marked down and running, then stop it. 477 */ 478 if (ifp->if_flags & IFF_UP) { 479 if (!(ifp->if_flags & IFF_RUNNING)) { 480 xe_hard_reset(scp); 481 xe_setmedia(scp); 482 xe_init(scp); 483 } 484 } 485 else { 486 if (ifp->if_flags & IFF_RUNNING) 487 xe_stop(scp); 488 } 489 490 case SIOCADDMULTI: 491 case SIOCDELMULTI: 492 /* 493 * Multicast list has (maybe) changed; set the hardware filter 494 * accordingly. This also serves to deal with promiscuous mode if we have 495 * a BPF listener active. 496 */ 497 xe_setmulti(scp); 498 error = 0; 499 break; 500 501 case SIOCSIFMEDIA: 502 case SIOCGIFMEDIA: 503 /* 504 * Someone wants to get/set media options. 505 */ 506 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command); 507 break; 508 509 default: 510 error = ether_ioctl(ifp, command, data); 511 break; 512 } 513 514 crit_exit(); 515 516 return error; 517 } 518 519 520 /* 521 * Card interrupt handler. 522 * 523 * This function is probably more complicated than it needs to be, as it 524 * attempts to deal with the case where multiple packets get sent between 525 * interrupts. This is especially annoying when working out the collision 526 * stats. Not sure whether this case ever really happens or not (maybe on a 527 * slow/heavily loaded machine?) so it's probably best to leave this like it 528 * is. 529 * 530 * Note that the crappy PIO used to get packets on and off the card means that 531 * you will spend a lot of time in this routine -- I can get my P150 to spend 532 * 90% of its time servicing interrupts if I really hammer the network. Could 533 * fix this, but then you'd start dropping/losing packets. The moral of this 534 * story? If you want good network performance _and_ some cycles left over to 535 * get your work done, don't buy a Xircom card. Or convince them to tell me 536 * how to do memory-mapped I/O :) 537 */ 538 static void 539 xe_intr(void *xscp) 540 { 541 struct xe_softc *scp = (struct xe_softc *) xscp; 542 struct ifnet *ifp; 543 int result; 544 u_int16_t rx_bytes, rxs, txs; 545 u_int8_t psr, isr, esr, rsr; 546 547 ifp = &scp->arpcom.ac_if; 548 rx_bytes = 0; /* Bytes received on this interrupt */ 549 result = 0; /* Set true if the interrupt is for us */ 550 551 if (scp->mohawk) { 552 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 553 } 554 555 psr = XE_INB(XE_PR); /* Stash the current register page */ 556 557 /* 558 * Read ISR to see what caused this interrupt. Note that this clears the 559 * ISR on CE2 type cards. 560 */ 561 if ((isr = XE_INB(XE_ISR)) && isr != 0xff) { 562 563 result = 1; /* This device did generate an int */ 564 esr = XE_INB(XE_ESR); /* Read the other status registers */ 565 XE_SELECT_PAGE(0x40); 566 rxs = XE_INB(XE_RST0); 567 XE_OUTB(XE_RST0, ~rxs & 0xff); 568 txs = XE_INB(XE_TXST0); 569 txs |= XE_INB(XE_TXST1) << 8; 570 XE_OUTB(XE_TXST0, 0); 571 XE_OUTB(XE_TXST1, 0); 572 XE_SELECT_PAGE(0); 573 574 #if XE_DEBUG > 2 575 if_printf(ifp, "ISR=%#2.2x ESR=%#2.2x RST=%#2.2x TXST=%#4.4x\n", isr, esr, rxs, txs); 576 #endif 577 578 /* 579 * Handle transmit interrupts 580 */ 581 if (isr & XE_ISR_TX_PACKET) { 582 u_int8_t new_tpr, sent; 583 584 if ((new_tpr = XE_INB(XE_TPR)) < scp->tx_tpr) /* Update packet count */ 585 sent = (0xff - scp->tx_tpr) + new_tpr; /* TPR rolled over */ 586 else 587 sent = new_tpr - scp->tx_tpr; 588 589 if (sent > 0) { /* Packets sent since last interrupt */ 590 scp->tx_tpr = new_tpr; 591 scp->tx_queued -= sent; 592 ifp->if_opackets += sent; 593 ifp->if_collisions += scp->tx_collisions; 594 595 /* 596 * Collision stats are a PITA. If multiples frames have been sent, we 597 * distribute any outstanding collision count equally amongst them. 598 * However, if we're missing interrupts we're quite likely to also 599 * miss some collisions; thus the total count will be off anyway. 600 * Likewise, if we miss a frame dropped due to excessive collisions 601 * any outstanding collisions count will be held against the next 602 * frame to be successfully sent. Hopefully it averages out in the 603 * end! 604 * XXX - This will screw up if tx_collisions/sent > 14. FIX IT! 605 */ 606 switch (scp->tx_collisions) { 607 case 0: 608 break; 609 case 1: 610 scp->mibdata.dot3StatsSingleCollisionFrames++; 611 scp->mibdata.dot3StatsCollFrequencies[0]++; 612 break; 613 default: 614 if (sent == 1) { 615 scp->mibdata.dot3StatsMultipleCollisionFrames++; 616 scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++; 617 } 618 else { /* Distribute across multiple frames */ 619 scp->mibdata.dot3StatsMultipleCollisionFrames += sent; 620 scp->mibdata. 621 dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent; 622 scp->mibdata. 623 dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent; 624 } 625 } 626 scp->tx_collisions = 0; 627 } 628 ifp->if_timer = 0; 629 ifp->if_flags &= ~IFF_OACTIVE; 630 } 631 if (txs & 0x0002) { /* Excessive collisions (packet dropped) */ 632 ifp->if_collisions += 16; 633 ifp->if_oerrors++; 634 scp->tx_collisions = 0; 635 scp->mibdata.dot3StatsExcessiveCollisions++; 636 scp->mibdata.dot3StatsMultipleCollisionFrames++; 637 scp->mibdata.dot3StatsCollFrequencies[15]++; 638 XE_OUTB(XE_CR, XE_CR_RESTART_TX); 639 } 640 if (txs & 0x0040) /* Transmit aborted -- probably collisions */ 641 scp->tx_collisions++; 642 643 644 /* 645 * Handle receive interrupts 646 */ 647 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) { 648 649 if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) { 650 struct ether_header *ehp; 651 struct mbuf *mbp; 652 u_int16_t len; 653 654 len = XE_INW(XE_RBC); 655 656 if (len == 0) 657 continue; 658 659 #if 0 660 /* 661 * Limit the amount of time we spend in this loop, dropping packets if 662 * necessary. The Linux code does this with considerably more 663 * finesse, adjusting the threshold dynamically. 664 */ 665 if ((rx_bytes += len) > 22000) { 666 ifp->if_iqdrops++; 667 scp->mibData.dot3StatsMissedFrames++; 668 XE_OUTW(XE_DO, 0x8000); 669 continue; 670 } 671 #endif 672 673 if (len & 0x01) 674 len++; 675 676 MGETHDR(mbp, MB_DONTWAIT, MT_DATA); /* Allocate a header mbuf */ 677 if (mbp != NULL) { 678 mbp->m_pkthdr.rcvif = ifp; 679 mbp->m_pkthdr.len = mbp->m_len = len; 680 681 /* 682 * If the mbuf header isn't big enough for the packet, attach an 683 * mbuf cluster to hold it. The +2 is to allow for the nasty little 684 * alignment hack below. 685 */ 686 if (len + 2 > MHLEN) { 687 MCLGET(mbp, MB_DONTWAIT); 688 if ((mbp->m_flags & M_EXT) == 0) { 689 m_freem(mbp); 690 mbp = NULL; 691 } 692 } 693 } 694 695 if (mbp != NULL) { 696 /* 697 * The Ethernet header is 14 bytes long; thus the actual packet data 698 * won't be 32-bit aligned when it's dumped into the mbuf. We 699 * offset everything by 2 bytes to fix this. Apparently the 700 * alignment is important for NFS, damn its eyes. 701 */ 702 mbp->m_data += 2; 703 ehp = mtod(mbp, struct ether_header *); 704 705 /* 706 * Now get the packet, including the Ethernet header and trailer (?) 707 * We use programmed I/O, because we don't know how to do shared 708 * memory with these cards. So yes, it's real slow, and heavy on 709 * the interrupts (CPU on my P150 maxed out at ~950KBps incoming). 710 */ 711 if (scp->srev == 0) { /* Workaround a bug in old cards */ 712 u_short rhs; 713 714 XE_SELECT_PAGE(5); 715 rhs = XE_INW(XE_RHSA); 716 XE_SELECT_PAGE(0); 717 718 rhs += 3; /* Skip control info */ 719 720 if (rhs >= 0x8000) 721 rhs = 0; 722 723 if (rhs + len > 0x8000) { 724 int i; 725 726 /* 727 * XXX - This i-- seems very wrong, but it's what the Linux guys 728 * XXX - do. Need someone with an old CE2 to test this for me. 729 * XXX - 99/3/28: Changed the first i-- to an i++, maybe that'll 730 * XXX - fix it? It seems as though the previous version would 731 * XXX - have caused an infinite loop (what, another one?). 732 */ 733 for (i = 0; i < len; i++, rhs++) { 734 ((char *)ehp)[i] = XE_INB(XE_EDP); 735 if (rhs == 0x8000) { 736 rhs = 0; 737 i--; 738 } 739 } 740 } 741 else 742 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, 743 (u_int16_t *) ehp, len >> 1); 744 } 745 else 746 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, 747 (u_int16_t *) ehp, len >> 1); 748 749 /* Deliver packet to upper layers */ 750 if (mbp != NULL) { 751 mbp->m_pkthdr.len = mbp->m_len = len; 752 (*ifp->if_input)(ifp, mbp); /* Send the packet on its way */ 753 ifp->if_ipackets++; /* Success! */ 754 } 755 XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */ 756 } 757 } 758 else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */ 759 scp->mibdata.dot3StatsFrameTooLongs++; 760 ifp->if_ierrors++; 761 } 762 else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */ 763 scp->mibdata.dot3StatsFCSErrors++; 764 ifp->if_ierrors++; 765 } 766 else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */ 767 scp->mibdata.dot3StatsAlignmentErrors++; 768 ifp->if_ierrors++; 769 } 770 } 771 if (rxs & 0x10) { /* Receiver overrun */ 772 scp->mibdata.dot3StatsInternalMacReceiveErrors++; 773 ifp->if_ierrors++; 774 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN); 775 } 776 } 777 778 XE_SELECT_PAGE(psr); /* Restore saved page */ 779 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */ 780 781 /* Could force an int here, instead of dropping packets? */ 782 /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */ 783 784 return; 785 } 786 787 788 /* 789 * Device timeout/watchdog routine. Called automatically if we queue a packet 790 * for transmission but don't get an interrupt within a specified timeout 791 * (usually 5 seconds). When this happens we assume the worst and reset the 792 * card. 793 */ 794 static void 795 xe_watchdog(struct ifnet *ifp) { 796 struct xe_softc *scp = ifp->if_softc; 797 798 if_printf(ifp, "watchdog timeout; resetting card\n"); 799 scp->tx_timeouts++; 800 ifp->if_oerrors += scp->tx_queued; 801 xe_stop(scp); 802 xe_hard_reset(scp); 803 xe_setmedia(scp); 804 xe_init(scp); 805 } 806 807 808 /* 809 * Change media selection. 810 */ 811 static int 812 xe_media_change(struct ifnet *ifp) { 813 struct xe_softc *scp = ifp->if_softc; 814 815 #ifdef XE_DEBUG 816 if_printf(ifp, "media_change\n"); 817 #endif 818 819 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER) 820 return(EINVAL); 821 822 /* 823 * Some card/media combos aren't always possible -- filter those out here. 824 */ 825 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO || 826 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok) 827 return (EINVAL); 828 829 xe_setmedia(scp); 830 831 return 0; 832 } 833 834 835 /* 836 * Return current media selection. 837 */ 838 static void 839 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) { 840 841 #ifdef XE_DEBUG 842 if_printf(ifp, "media_status\n"); 843 #endif 844 845 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media; 846 847 return; 848 } 849 850 851 /* 852 * Select active media. 853 */ 854 static void xe_setmedia(void *xscp) { 855 struct xe_softc *scp = xscp; 856 u_int16_t bmcr, bmsr, anar, lpar; 857 858 #ifdef XE_DEBUG 859 if_printf(scp->ifp, "setmedia\n"); 860 #endif 861 862 /* Cancel any pending timeout */ 863 callout_stop(&scp->xe_timer); 864 xe_disable_intr(scp); 865 866 /* Select media */ 867 scp->media = IFM_ETHER; 868 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) { 869 870 case IFM_AUTO: /* Autoselect media */ 871 scp->media = IFM_ETHER|IFM_AUTO; 872 873 /* 874 * Autoselection is really awful. It goes something like this: 875 * 876 * Wait until the transmitter goes idle (2sec timeout). 877 * Reset card 878 * IF a 100Mbit PHY exists 879 * Start NWAY autonegotiation (3.5sec timeout) 880 * IF that succeeds 881 * Select 100baseTX or 10baseT, whichever was detected 882 * ELSE 883 * Reset card 884 * IF a 100Mbit PHY exists 885 * Try to force a 100baseTX link (3sec timeout) 886 * IF that succeeds 887 * Select 100baseTX 888 * ELSE 889 * Disable the PHY 890 * ENDIF 891 * ENDIF 892 * ENDIF 893 * ENDIF 894 * IF nothing selected so far 895 * IF a 100Mbit PHY exists 896 * Select 10baseT 897 * ELSE 898 * Select 10baseT or 10base2, whichever is connected 899 * ENDIF 900 * ENDIF 901 */ 902 switch (scp->autoneg_status) { 903 904 case XE_AUTONEG_NONE: 905 #if XE_DEBUG > 1 906 if_printf(scp->ifp, "Waiting for idle transmitter\n"); 907 #endif 908 scp->arpcom.ac_if.if_flags |= IFF_OACTIVE; 909 scp->autoneg_status = XE_AUTONEG_WAITING; 910 callout_reset(&scp->xe_timer, hz * 2, xe_setmedia, scp); 911 return; 912 913 case XE_AUTONEG_WAITING: 914 xe_soft_reset(scp); 915 if (scp->phy_ok) { 916 #if XE_DEBUG > 1 917 if_printf(scp->ifp, "Starting autonegotiation\n"); 918 #endif 919 bmcr = xe_phy_readreg(scp, PHY_BMCR); 920 bmcr &= ~(PHY_BMCR_AUTONEGENBL); 921 xe_phy_writereg(scp, PHY_BMCR, bmcr); 922 anar = xe_phy_readreg(scp, PHY_ANAR); 923 anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL); 924 anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF; 925 xe_phy_writereg(scp, PHY_ANAR, anar); 926 bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; 927 xe_phy_writereg(scp, PHY_BMCR, bmcr); 928 scp->autoneg_status = XE_AUTONEG_STARTED; 929 callout_reset(&scp->xe_timer, hz * 7 / 2, xe_setmedia, scp); 930 return; 931 } 932 else { 933 scp->autoneg_status = XE_AUTONEG_FAIL; 934 } 935 break; 936 937 case XE_AUTONEG_STARTED: 938 bmsr = xe_phy_readreg(scp, PHY_BMSR); 939 lpar = xe_phy_readreg(scp, PHY_LPAR); 940 if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) { 941 #if XE_DEBUG > 1 942 if_printf(scp->ifp, "Autonegotiation complete!\n"); 943 #endif 944 /* 945 * XXX - Shouldn't have to do this, but (on my hub at least) the 946 * XXX - transmitter won't work after a successful autoneg. So we see 947 * XXX - what the negotiation result was and force that mode. I'm 948 * XXX - sure there is an easy fix for this. 949 */ 950 if (lpar & PHY_LPAR_100BTXHALF) { 951 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 952 XE_MII_DUMP(scp); 953 XE_SELECT_PAGE(2); 954 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 955 scp->media = IFM_ETHER|IFM_100_TX; 956 scp->autoneg_status = XE_AUTONEG_NONE; 957 } 958 else { 959 /* 960 * XXX - Bit of a hack going on in here. 961 * XXX - This is derived from Ken Hughes patch to the Linux driver 962 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B 963 * XXX - cards. What's a CE3B and how's it differ from a plain CE3? 964 * XXX - these are the things we need to find out. 965 */ 966 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 967 XE_SELECT_PAGE(2); 968 /* BEGIN HACK */ 969 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 970 XE_SELECT_PAGE(0x42); 971 XE_OUTB(XE_SWC1, 0x80); 972 scp->media = IFM_ETHER|IFM_10_T; 973 scp->autoneg_status = XE_AUTONEG_NONE; 974 /* END HACK */ 975 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */ 976 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/ 977 } 978 } 979 else { 980 #if XE_DEBUG > 1 981 if_printf(scp->ifp, "Autonegotiation failed; trying 100baseTX\n"); 982 #endif 983 XE_MII_DUMP(scp); 984 xe_soft_reset(scp); 985 if (scp->phy_ok) { 986 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 987 scp->autoneg_status = XE_AUTONEG_100TX; 988 callout_reset(&scp->xe_timer, hz * 3, xe_setmedia, scp); 989 return; 990 } 991 else { 992 scp->autoneg_status = XE_AUTONEG_FAIL; 993 } 994 } 995 break; 996 997 case XE_AUTONEG_100TX: 998 (void)xe_phy_readreg(scp, PHY_BMSR); 999 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1000 if (bmsr & PHY_BMSR_LINKSTAT) { 1001 #if XE_DEBUG > 1 1002 if_printf(scp->ifp, "Got 100baseTX link!\n"); 1003 #endif 1004 XE_MII_DUMP(scp); 1005 XE_SELECT_PAGE(2); 1006 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1007 scp->media = IFM_ETHER|IFM_100_TX; 1008 scp->autoneg_status = XE_AUTONEG_NONE; 1009 } 1010 else { 1011 #if XE_DEBUG > 1 1012 if_printf(scp->ifp, "Autonegotiation failed; disabling PHY\n"); 1013 #endif 1014 XE_MII_DUMP(scp); 1015 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1016 XE_SELECT_PAGE(2); 1017 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */ 1018 scp->autoneg_status = XE_AUTONEG_FAIL; 1019 } 1020 break; 1021 } 1022 1023 /* 1024 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then 1025 * either autonegotiation failed, or never got started to begin with. In 1026 * either case, select a suitable 10Mbit media and hope it works. We 1027 * don't need to reset the card again, since it will have been done 1028 * already by the big switch above. 1029 */ 1030 if (scp->autoneg_status == XE_AUTONEG_FAIL) { 1031 #if XE_DEBUG > 1 1032 if_printf(scp->ifp, "Selecting 10baseX\n"); 1033 #endif 1034 if (scp->mohawk) { 1035 XE_SELECT_PAGE(0x42); 1036 XE_OUTB(XE_SWC1, 0x80); 1037 scp->media = IFM_ETHER|IFM_10_T; 1038 scp->autoneg_status = XE_AUTONEG_NONE; 1039 } 1040 else { 1041 XE_SELECT_PAGE(4); 1042 XE_OUTB(XE_GPR0, 4); 1043 DELAY(50000); 1044 XE_SELECT_PAGE(0x42); 1045 XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0); 1046 scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2); 1047 scp->autoneg_status = XE_AUTONEG_NONE; 1048 } 1049 } 1050 break; 1051 1052 1053 /* 1054 * If a specific media has been requested, we just reset the card and 1055 * select it (one small exception -- if 100baseTX is requested by there is 1056 * no PHY, we fall back to 10baseT operation). 1057 */ 1058 case IFM_100_TX: /* Force 100baseTX */ 1059 xe_soft_reset(scp); 1060 if (scp->phy_ok) { 1061 #if XE_DEBUG > 1 1062 if_printf(scp->ifp, "Selecting 100baseTX\n"); 1063 #endif 1064 XE_SELECT_PAGE(0x42); 1065 XE_OUTB(XE_SWC1, 0); 1066 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1067 XE_SELECT_PAGE(2); 1068 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1069 scp->media |= IFM_100_TX; 1070 break; 1071 } 1072 /* FALLTHROUGH */ 1073 1074 case IFM_10_T: /* Force 10baseT */ 1075 xe_soft_reset(scp); 1076 #if XE_DEBUG > 1 1077 if_printf(scp->ifp, "Selecting 10baseT\n"); 1078 #endif 1079 if (scp->phy_ok) { 1080 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1081 XE_SELECT_PAGE(2); 1082 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */ 1083 } 1084 XE_SELECT_PAGE(0x42); 1085 XE_OUTB(XE_SWC1, 0x80); 1086 scp->media |= IFM_10_T; 1087 break; 1088 1089 case IFM_10_2: 1090 xe_soft_reset(scp); 1091 #if XE_DEBUG > 1 1092 if_printf(scp->ifp, "Selecting 10base2\n"); 1093 #endif 1094 XE_SELECT_PAGE(0x42); 1095 XE_OUTB(XE_SWC1, 0xc0); 1096 scp->media |= IFM_10_2; 1097 break; 1098 } 1099 1100 1101 /* 1102 * Finally, the LEDs are set to match whatever media was chosen and the 1103 * transmitter is unblocked. 1104 */ 1105 #if XE_DEBUG > 1 1106 if_printf(scp->ifp, "Setting LEDs\n"); 1107 #endif 1108 XE_SELECT_PAGE(2); 1109 switch (IFM_SUBTYPE(scp->media)) { 1110 case IFM_100_TX: 1111 case IFM_10_T: 1112 XE_OUTB(XE_LED, 0x3b); 1113 if (scp->dingo) 1114 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */ 1115 break; 1116 1117 case IFM_10_2: 1118 XE_OUTB(XE_LED, 0x3a); 1119 break; 1120 } 1121 1122 /* Restart output? */ 1123 scp->ifp->if_flags &= ~IFF_OACTIVE; 1124 xe_init(scp); 1125 } 1126 1127 1128 /* 1129 * Hard reset (power cycle) the card. 1130 */ 1131 static void 1132 xe_hard_reset(struct xe_softc *scp) { 1133 1134 #ifdef XE_DEBUG 1135 if_printf(scp->ifp, "hard_reset\n"); 1136 #endif 1137 1138 crit_enter(); 1139 1140 /* 1141 * Power cycle the card. 1142 */ 1143 XE_SELECT_PAGE(4); 1144 XE_OUTB(XE_GPR1, 0); /* Power off */ 1145 DELAY(40000); 1146 1147 if (scp->mohawk) 1148 XE_OUTB(XE_GPR1, 1); /* And back on again */ 1149 else 1150 XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */ 1151 DELAY(40000); 1152 XE_SELECT_PAGE(0); 1153 1154 crit_exit(); 1155 } 1156 1157 1158 /* 1159 * Soft reset the card. Also makes sure that the ML6692 and 10Mbit controller 1160 * are powered up, sets the silicon revision number in softc, disables 1161 * interrupts and checks for the prescence of a 100Mbit PHY. This should 1162 * leave us in a position where we can access the PHY and do media 1163 * selection. The function imposes a 0.5s delay while the hardware powers up. 1164 */ 1165 static void 1166 xe_soft_reset(struct xe_softc *scp) { 1167 1168 #ifdef XE_DEBUG 1169 if_printf(scp->ifp, "soft_reset\n"); 1170 #endif 1171 1172 crit_enter(); 1173 1174 /* 1175 * Reset the card, (again). 1176 */ 1177 XE_SELECT_PAGE(0); 1178 XE_OUTB(XE_CR, XE_CR_SOFT_RESET); 1179 DELAY(40000); 1180 XE_OUTB(XE_CR, 0); 1181 DELAY(40000); 1182 1183 if (scp->mohawk) { 1184 /* 1185 * set GP1 and GP2 as outputs (bits 2 & 3) 1186 * set GP1 low to power on the ML6692 (bit 0) 1187 * set GP2 high to power on the 10Mhz chip (bit 1) 1188 */ 1189 XE_SELECT_PAGE(4); 1190 XE_OUTB(XE_GPR0, 0x0e); 1191 } 1192 1193 /* 1194 * Wait for everything to wake up. 1195 */ 1196 DELAY(500000); 1197 1198 /* 1199 * Get silicon revision number. 1200 */ 1201 XE_SELECT_PAGE(4); 1202 if (scp->mohawk) 1203 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4; 1204 else 1205 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4; 1206 #ifdef XE_DEBUG 1207 if_printf(scp->ifp, "silicon revision = %d\n", scp->srev); 1208 #endif 1209 1210 /* 1211 * Shut off interrupts. 1212 */ 1213 xe_disable_intr(scp); 1214 1215 /* 1216 * Check for PHY. 1217 */ 1218 if (scp->mohawk) { 1219 scp->phy_ok = xe_mii_init(scp); 1220 } 1221 1222 XE_SELECT_PAGE(0); 1223 1224 crit_exit(); 1225 } 1226 1227 1228 /* 1229 * Take interface offline. This is done by powering down the device, which I 1230 * assume means just shutting down the transceiver and Ethernet logic. This 1231 * requires a _hard_ reset to recover from, as we need to power up again. 1232 */ 1233 static void 1234 xe_stop(struct xe_softc *scp) { 1235 1236 #ifdef XE_DEBUG 1237 if_printf(scp->ifp, "stop\n"); 1238 #endif 1239 1240 crit_enter(); 1241 1242 /* 1243 * Shut off interrupts. 1244 */ 1245 xe_disable_intr(scp); 1246 1247 /* 1248 * Power down. 1249 */ 1250 XE_SELECT_PAGE(4); 1251 XE_OUTB(XE_GPR1, 0); 1252 XE_SELECT_PAGE(0); 1253 1254 /* 1255 * ~IFF_RUNNING == interface down. 1256 */ 1257 scp->ifp->if_flags &= ~IFF_RUNNING; 1258 scp->ifp->if_flags &= ~IFF_OACTIVE; 1259 scp->ifp->if_timer = 0; 1260 1261 crit_exit(); 1262 } 1263 1264 1265 /* 1266 * Enable Ethernet interrupts from the card. 1267 */ 1268 static void 1269 xe_enable_intr(struct xe_softc *scp) { 1270 #ifdef XE_DEBUG 1271 if_printf(scp->ifp, "enable_intr\n"); 1272 #endif 1273 1274 XE_SELECT_PAGE(1); 1275 XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */ 1276 XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */ 1277 DELAY(1); 1278 1279 XE_SELECT_PAGE(0); 1280 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */ 1281 if (scp->modem && !scp->dingo) { /* This bit is just magic */ 1282 if (!(XE_INB(0x10) & 0x01)) { 1283 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */ 1284 } 1285 } 1286 } 1287 1288 1289 /* 1290 * Disable all Ethernet interrupts from the card. 1291 */ 1292 static void 1293 xe_disable_intr(struct xe_softc *scp) { 1294 #ifdef XE_DEBUG 1295 if_printf(scp->ifp, "disable_intr\n"); 1296 #endif 1297 1298 XE_SELECT_PAGE(0); 1299 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 1300 if (scp->modem && !scp->dingo) { /* More magic (does this work?) */ 1301 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */ 1302 } 1303 1304 XE_SELECT_PAGE(1); 1305 XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */ 1306 XE_OUTB(XE_IMR1, 0); 1307 XE_SELECT_PAGE(0); 1308 } 1309 1310 1311 /* 1312 * Set up multicast filter and promiscuous mode 1313 */ 1314 static void 1315 xe_setmulti(struct xe_softc *scp) { 1316 struct ifnet *ifp; 1317 struct ifmultiaddr *ifma; 1318 int count; 1319 1320 ifp = &scp->arpcom.ac_if; 1321 1322 /* Get length of multicast list */ 1323 count = 0; 1324 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) 1325 count++; 1326 1327 if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) { 1328 /* 1329 * Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are 1330 * set, or if we have been asked to deal with more than 9 multicast 1331 * addresses. To do this: set MPE and PME in SWC1 1332 */ 1333 XE_SELECT_PAGE(0x42); 1334 XE_OUTB(XE_SWC1, 0x06); 1335 } 1336 else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) { 1337 /* 1338 * Program the filters for up to 9 addresses 1339 */ 1340 XE_SELECT_PAGE(0x42); 1341 XE_OUTB(XE_SWC1, 0x01); 1342 XE_SELECT_PAGE(0x40); 1343 XE_OUTB(XE_CMD0, XE_CMD0_OFFLINE); 1344 /*xe_reg_dump(scp);*/ 1345 xe_setaddrs(scp); 1346 /*xe_reg_dump(scp);*/ 1347 XE_SELECT_PAGE(0x40); 1348 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); 1349 } 1350 else { 1351 /* 1352 * No multicast operation (default) 1353 */ 1354 XE_SELECT_PAGE(0x42); 1355 XE_OUTB(XE_SWC1, 0); 1356 } 1357 XE_SELECT_PAGE(0); 1358 } 1359 1360 1361 /* 1362 * Set up all on-chip addresses (for multicast). AFAICS, there are 10 1363 * of these things; the first is our MAC address, the other 9 are mcast 1364 * addresses, padded with the MAC address if there aren't enough. 1365 * XXX - This doesn't work right, but I'm not sure why yet. We seem to be 1366 * XXX - doing much the same as the Linux code, which is weird enough that 1367 * XXX - it's probably right (despite my earlier comments to the contrary). 1368 */ 1369 static void 1370 xe_setaddrs(struct xe_softc *scp) { 1371 struct ifmultiaddr *ifma; 1372 u_int8_t *addr; 1373 u_int8_t page, slot, byte, i; 1374 1375 ifma = LIST_FIRST(&scp->arpcom.ac_if.if_multiaddrs); 1376 1377 XE_SELECT_PAGE(page = 0x50); 1378 1379 for (slot = 0, byte = 8; slot < 10; slot++) { 1380 1381 if (slot == 0) 1382 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1383 else { 1384 while (ifma != NULL && ifma->ifma_addr->sa_family != AF_LINK) 1385 ifma = LIST_NEXT(ifma, ifma_link); 1386 if (ifma != NULL) 1387 addr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr); 1388 else 1389 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1390 } 1391 1392 for (i = 0; i < 6; i++, byte++) { 1393 #if XE_DEBUG > 2 1394 if (i) 1395 printf(":%x", addr[i]); 1396 else 1397 if_printf(scp->ifp, "individual addresses %d: %x", slot, addr[0]); 1398 #endif 1399 1400 if (byte > 15) { 1401 page++; 1402 byte = 8; 1403 XE_SELECT_PAGE(page); 1404 } 1405 1406 if (scp->mohawk) 1407 XE_OUTB(byte, addr[5 - i]); 1408 else 1409 XE_OUTB(byte, addr[i]); 1410 } 1411 #if XE_DEBUG > 2 1412 printf("\n"); 1413 #endif 1414 } 1415 1416 XE_SELECT_PAGE(0); 1417 } 1418 1419 1420 /* 1421 * Write an outgoing packet to the card using programmed I/O. 1422 */ 1423 static int 1424 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) { 1425 struct mbuf *mbp2; 1426 u_int16_t len, pad, free, ok; 1427 u_int8_t *data; 1428 u_int8_t savebyte[2], wantbyte; 1429 1430 /* Get total packet length */ 1431 for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next); 1432 1433 /* Packets < minimum length may need to be padded out */ 1434 pad = 0; 1435 if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) { 1436 pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1; 1437 len = ETHER_MIN_LEN - ETHER_CRC_LEN; 1438 } 1439 1440 /* Check transmit buffer space */ 1441 XE_SELECT_PAGE(0); 1442 XE_OUTW(XE_TRS, len+2); 1443 free = XE_INW(XE_TSO); 1444 ok = free & 0x8000; 1445 free &= 0x7fff; 1446 if (free <= len + 2) 1447 return 1; 1448 1449 /* Send packet length to card */ 1450 XE_OUTW(XE_EDP, len); 1451 1452 /* 1453 * Write packet to card using PIO (code stolen from the ed driver) 1454 */ 1455 wantbyte = 0; 1456 while (mbp != NULL) { 1457 len = mbp->m_len; 1458 if (len > 0) { 1459 data = mtod(mbp, caddr_t); 1460 if (wantbyte) { /* Finish the last word */ 1461 savebyte[1] = *data; 1462 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1463 data++; 1464 len--; 1465 wantbyte = 0; 1466 } 1467 if (len > 1) { /* Output contiguous words */ 1468 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data, 1469 len >> 1); 1470 data += len & ~1; 1471 len &= 1; 1472 } 1473 if (len == 1) { /* Save last byte, if necessary */ 1474 savebyte[0] = *data; 1475 wantbyte = 1; 1476 } 1477 } 1478 mbp = mbp->m_next; 1479 } 1480 if (wantbyte) /* Last byte for odd-length packets */ 1481 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1482 1483 /* 1484 * For CE3 cards, just tell 'em to send -- apparently the card will pad out 1485 * short packets with random cruft. Otherwise, write nonsense words to fill 1486 * out the packet. I guess it is then sent automatically (?) 1487 */ 1488 if (scp->mohawk) 1489 XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR); 1490 else 1491 while (pad > 0) { 1492 XE_OUTW(XE_EDP, 0xdead); 1493 pad--; 1494 } 1495 1496 return 0; 1497 } 1498 1499 #if 0 1500 /* 1501 * Compute the 32-bit Ethernet CRC for the given buffer. 1502 */ 1503 static u_int32_t 1504 xe_compute_crc(u_int8_t *data, int len) { 1505 u_int32_t crc = 0xffffffff; 1506 u_int32_t poly = 0x04c11db6; 1507 u_int8_t current, crc31, bit; 1508 int i, k; 1509 1510 for (i = 0; i < len; i++) { 1511 current = data[i]; 1512 for (k = 1; k <= 8; k++) { 1513 if (crc & 0x80000000) { 1514 crc31 = 0x01; 1515 } 1516 else { 1517 crc31 = 0; 1518 } 1519 bit = crc31 ^ (current & 0x01); 1520 crc <<= 1; 1521 current >>= 1; 1522 if (bit) { 1523 crc = (crc ^ poly)|1; 1524 } 1525 } 1526 } 1527 return crc; 1528 } 1529 1530 1531 /* 1532 * Convert a CRC into an index into the multicast hash table. What we do is 1533 * take the most-significant 6 bits of the CRC, reverse them, and use that as 1534 * the bit number in the hash table. Bits 5:3 of the result give the byte 1535 * within the table (0-7); bits 2:0 give the bit number within that byte (also 1536 * 0-7), ie. the number of shifts needed to get it into the lsb position. 1537 */ 1538 static int 1539 xe_compute_hashbit(u_int32_t crc) { 1540 u_int8_t hashbit = 0; 1541 int i; 1542 1543 for (i = 0; i < 6; i++) { 1544 hashbit >>= 1; 1545 if (crc & 0x80000000) { 1546 hashbit &= 0x80; 1547 } 1548 crc <<= 1; 1549 } 1550 return (hashbit >> 2); 1551 } 1552 1553 #endif 1554 1555 1556 1557 /************************************************************** 1558 * * 1559 * M I I F U N C T I O N S * 1560 * * 1561 **************************************************************/ 1562 1563 /* 1564 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't 1565 * seem to work any better than the xirc2_ps stuff, but it's cleaner code. 1566 * XXX - this stuff shouldn't be here. It should all be abstracted off to 1567 * XXX - some kind of common MII-handling code, shared by all drivers. But 1568 * XXX - that's a whole other mission. 1569 */ 1570 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x)) 1571 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x)) 1572 1573 1574 /* 1575 * Sync the PHYs by setting data bit and strobing the clock 32 times. 1576 */ 1577 static void 1578 xe_mii_sync(struct xe_softc *scp) { 1579 int i; 1580 1581 XE_SELECT_PAGE(2); 1582 XE_MII_SET(XE_MII_DIR|XE_MII_WRD); 1583 1584 for (i = 0; i < 32; i++) { 1585 XE_MII_SET(XE_MII_CLK); 1586 DELAY(1); 1587 XE_MII_CLR(XE_MII_CLK); 1588 DELAY(1); 1589 } 1590 } 1591 1592 1593 /* 1594 * Look for a MII-compliant PHY. If we find one, reset it. 1595 */ 1596 static int 1597 xe_mii_init(struct xe_softc *scp) { 1598 u_int16_t status; 1599 1600 status = xe_phy_readreg(scp, PHY_BMSR); 1601 if ((status & 0xff00) != 0x7800) { 1602 #if XE_DEBUG > 1 1603 if_printf(scp->ifp, "no PHY found, %0x\n", status); 1604 #endif 1605 return 0; 1606 } 1607 else { 1608 #if XE_DEBUG > 1 1609 if_printf(scp->ifp, "PHY OK!\n"); 1610 #endif 1611 1612 /* Reset the PHY */ 1613 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET); 1614 DELAY(500); 1615 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET); 1616 XE_MII_DUMP(scp); 1617 return 1; 1618 } 1619 } 1620 1621 1622 /* 1623 * Clock a series of bits through the MII. 1624 */ 1625 static void 1626 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) { 1627 int i; 1628 1629 XE_SELECT_PAGE(2); 1630 XE_MII_CLR(XE_MII_CLK); 1631 1632 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 1633 if (bits & i) { 1634 XE_MII_SET(XE_MII_WRD); 1635 } else { 1636 XE_MII_CLR(XE_MII_WRD); 1637 } 1638 DELAY(1); 1639 XE_MII_CLR(XE_MII_CLK); 1640 DELAY(1); 1641 XE_MII_SET(XE_MII_CLK); 1642 } 1643 } 1644 1645 1646 /* 1647 * Read an PHY register through the MII. 1648 */ 1649 static int 1650 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) { 1651 int i, ack; 1652 1653 crit_enter(); 1654 1655 /* 1656 * Set up frame for RX. 1657 */ 1658 frame->mii_stdelim = XE_MII_STARTDELIM; 1659 frame->mii_opcode = XE_MII_READOP; 1660 frame->mii_turnaround = 0; 1661 frame->mii_data = 0; 1662 1663 XE_SELECT_PAGE(2); 1664 XE_OUTB(XE_GPR2, 0); 1665 1666 /* 1667 * Turn on data xmit. 1668 */ 1669 XE_MII_SET(XE_MII_DIR); 1670 1671 xe_mii_sync(scp); 1672 1673 /* 1674 * Send command/address info. 1675 */ 1676 xe_mii_send(scp, frame->mii_stdelim, 2); 1677 xe_mii_send(scp, frame->mii_opcode, 2); 1678 xe_mii_send(scp, frame->mii_phyaddr, 5); 1679 xe_mii_send(scp, frame->mii_regaddr, 5); 1680 1681 /* Idle bit */ 1682 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD)); 1683 DELAY(1); 1684 XE_MII_SET(XE_MII_CLK); 1685 DELAY(1); 1686 1687 /* Turn off xmit. */ 1688 XE_MII_CLR(XE_MII_DIR); 1689 1690 /* Check for ack */ 1691 XE_MII_CLR(XE_MII_CLK); 1692 DELAY(1); 1693 ack = XE_INB(XE_GPR2) & XE_MII_RDD; 1694 XE_MII_SET(XE_MII_CLK); 1695 DELAY(1); 1696 1697 /* 1698 * Now try reading data bits. If the ack failed, we still 1699 * need to clock through 16 cycles to keep the PHY(s) in sync. 1700 */ 1701 if (ack) { 1702 for(i = 0; i < 16; i++) { 1703 XE_MII_CLR(XE_MII_CLK); 1704 DELAY(1); 1705 XE_MII_SET(XE_MII_CLK); 1706 DELAY(1); 1707 } 1708 goto fail; 1709 } 1710 1711 for (i = 0x8000; i; i >>= 1) { 1712 XE_MII_CLR(XE_MII_CLK); 1713 DELAY(1); 1714 if (!ack) { 1715 if (XE_INB(XE_GPR2) & XE_MII_RDD) 1716 frame->mii_data |= i; 1717 DELAY(1); 1718 } 1719 XE_MII_SET(XE_MII_CLK); 1720 DELAY(1); 1721 } 1722 1723 fail: 1724 1725 XE_MII_CLR(XE_MII_CLK); 1726 DELAY(1); 1727 XE_MII_SET(XE_MII_CLK); 1728 DELAY(1); 1729 1730 crit_exit(); 1731 1732 if (ack) 1733 return(1); 1734 return(0); 1735 } 1736 1737 1738 /* 1739 * Write to a PHY register through the MII. 1740 */ 1741 static int 1742 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) { 1743 1744 crit_enter(); 1745 1746 /* 1747 * Set up frame for TX. 1748 */ 1749 frame->mii_stdelim = XE_MII_STARTDELIM; 1750 frame->mii_opcode = XE_MII_WRITEOP; 1751 frame->mii_turnaround = XE_MII_TURNAROUND; 1752 1753 XE_SELECT_PAGE(2); 1754 1755 /* 1756 * Turn on data output. 1757 */ 1758 XE_MII_SET(XE_MII_DIR); 1759 1760 xe_mii_sync(scp); 1761 1762 xe_mii_send(scp, frame->mii_stdelim, 2); 1763 xe_mii_send(scp, frame->mii_opcode, 2); 1764 xe_mii_send(scp, frame->mii_phyaddr, 5); 1765 xe_mii_send(scp, frame->mii_regaddr, 5); 1766 xe_mii_send(scp, frame->mii_turnaround, 2); 1767 xe_mii_send(scp, frame->mii_data, 16); 1768 1769 /* Idle bit. */ 1770 XE_MII_SET(XE_MII_CLK); 1771 DELAY(1); 1772 XE_MII_CLR(XE_MII_CLK); 1773 DELAY(1); 1774 1775 /* 1776 * Turn off xmit. 1777 */ 1778 XE_MII_CLR(XE_MII_DIR); 1779 1780 crit_exit(); 1781 1782 return(0); 1783 } 1784 1785 1786 /* 1787 * Read a register from the PHY. 1788 */ 1789 static u_int16_t 1790 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) { 1791 struct xe_mii_frame frame; 1792 1793 bzero((char *)&frame, sizeof(frame)); 1794 1795 frame.mii_phyaddr = 0; 1796 frame.mii_regaddr = reg; 1797 xe_mii_readreg(scp, &frame); 1798 1799 return(frame.mii_data); 1800 } 1801 1802 1803 /* 1804 * Write to a PHY register. 1805 */ 1806 static void 1807 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) { 1808 struct xe_mii_frame frame; 1809 1810 bzero((char *)&frame, sizeof(frame)); 1811 1812 frame.mii_phyaddr = 0; 1813 frame.mii_regaddr = reg; 1814 frame.mii_data = data; 1815 xe_mii_writereg(scp, &frame); 1816 1817 return; 1818 } 1819 1820 1821 #ifdef XE_DEBUG 1822 /* 1823 * A bit of debugging code. 1824 */ 1825 static void 1826 xe_mii_dump(struct xe_softc *scp) { 1827 int i; 1828 1829 crit_enter(); 1830 1831 if_printf(scp->ifp, "MII registers: "); 1832 for (i = 0; i < 2; i++) { 1833 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 1834 } 1835 for (i = 4; i < 7; i++) { 1836 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 1837 } 1838 printf("\n"); 1839 1840 crit_exit(); 1841 } 1842 1843 static void 1844 xe_reg_dump(struct xe_softc *scp) { 1845 int page, i; 1846 1847 crit_enter(); 1848 1849 if_printf(scp->ifp, "Common registers: "); 1850 for (i = 0; i < 8; i++) { 1851 printf(" %2.2x", XE_INB(i)); 1852 } 1853 printf("\n"); 1854 1855 for (page = 0; page <= 8; page++) { 1856 if_printf(scp->ifp, "Register page %2.2x: ", page); 1857 XE_SELECT_PAGE(page); 1858 for (i = 8; i < 16; i++) { 1859 printf(" %2.2x", XE_INB(i)); 1860 } 1861 printf("\n"); 1862 } 1863 1864 for (page = 0x10; page < 0x5f; page++) { 1865 if ((page >= 0x11 && page <= 0x3f) || 1866 (page == 0x41) || 1867 (page >= 0x43 && page <= 0x4f) || 1868 (page >= 0x59)) 1869 continue; 1870 if_printf(scp->ifp, "Register page %2.2x: ", page); 1871 XE_SELECT_PAGE(page); 1872 for (i = 8; i < 16; i++) { 1873 printf(" %2.2x", XE_INB(i)); 1874 } 1875 printf("\n"); 1876 } 1877 1878 crit_exit(); 1879 } 1880 #endif 1881 1882 int 1883 xe_activate(device_t dev) 1884 { 1885 struct xe_softc *sc = device_get_softc(dev); 1886 int start; 1887 1888 if (!sc->dingo) { 1889 sc->port_rid = 0; /* 0 is managed by pccard */ 1890 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, 1891 &sc->port_rid, 0, ~0, 16, RF_ACTIVE); 1892 } else { 1893 /* 1894 * Find a 16 byte aligned ioport for the card. 1895 */ 1896 #if XE_DEBUG > 0 1897 device_printf(dev, "Finding an aligned port for RealPort\n"); 1898 #endif /* XE_DEBUG */ 1899 sc->port_rid = 1; /* 0 is managed by pccard */ 1900 start = 0x100; 1901 do { 1902 sc->port_res = bus_alloc_resource(dev, 1903 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16, 1904 RF_ACTIVE); 1905 if (sc->port_res == 0) 1906 break; /* we failed */ 1907 if ((rman_get_start(sc->port_res) & 0xf) == 0) 1908 break; /* good */ 1909 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 1910 sc->port_res); 1911 start = (rman_get_start(sc->port_res) + 15) & ~0xf; 1912 } while (1); 1913 #if XE_DEBUG > 2 1914 device_printf(dev, "port 0x%0lx, size 0x%0lx\n", 1915 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 1916 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); 1917 #endif /* XE_DEBUG */ 1918 } 1919 if (!sc->port_res) { 1920 #if XE_DEBUG > 0 1921 device_printf(dev, "Cannot allocate ioport\n"); 1922 #endif 1923 return ENOMEM; 1924 } 1925 1926 sc->irq_rid = 0; 1927 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 1928 RF_ACTIVE); 1929 if (!sc->irq_res) { 1930 #if XE_DEBUG > 0 1931 device_printf(dev, "Cannot allocate irq\n"); 1932 #endif 1933 xe_deactivate(dev); 1934 return ENOMEM; 1935 } 1936 1937 sc->bst = rman_get_bustag(sc->port_res); 1938 sc->bsh = rman_get_bushandle(sc->port_res); 1939 return (0); 1940 } 1941 1942 void 1943 xe_deactivate(device_t dev) 1944 { 1945 struct xe_softc *sc = device_get_softc(dev); 1946 1947 if (sc->port_res) 1948 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 1949 sc->port_res); 1950 sc->port_res = 0; 1951 if (sc->irq_res) 1952 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, 1953 sc->irq_res); 1954 sc->irq_res = 0; 1955 } 1956