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 1.13 2004/07/23 07:16:30 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> 122 123 #include <sys/module.h> 124 #include <sys/bus.h> 125 126 #include <machine/bus.h> 127 #include <machine/resource.h> 128 #include <sys/rman.h> 129 130 #include <net/ethernet.h> 131 #include <net/if.h> 132 #include <net/if_arp.h> 133 #include <net/if_dl.h> 134 #include <net/if_media.h> 135 #include <net/if_mib.h> 136 #include <net/bpf.h> 137 138 #include <bus/pccard/pccardvar.h> 139 #include "card_if.h" 140 141 #include "if_xereg.h" 142 #include "if_xevar.h" 143 144 #include <machine/clock.h> 145 146 /* 147 * MII command structure 148 */ 149 struct xe_mii_frame { 150 u_int8_t mii_stdelim; 151 u_int8_t mii_opcode; 152 u_int8_t mii_phyaddr; 153 u_int8_t mii_regaddr; 154 u_int8_t mii_turnaround; 155 u_int16_t mii_data; 156 }; 157 158 /* 159 * Media autonegotiation progress constants 160 */ 161 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */ 162 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */ 163 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */ 164 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */ 165 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */ 166 167 168 /* 169 * Prototypes start here 170 */ 171 static int xe_probe (device_t dev); 172 static int xe_attach (device_t dev); 173 static int xe_detach (device_t dev); 174 static int xe_activate (device_t dev); 175 static void xe_deactivate (device_t dev); 176 static void xe_init (void *xscp); 177 static void xe_start (struct ifnet *ifp); 178 static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *); 179 static void xe_watchdog (struct ifnet *ifp); 180 static int xe_media_change (struct ifnet *ifp); 181 static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp); 182 static timeout_t xe_setmedia; 183 static void xe_hard_reset (struct xe_softc *scp); 184 static void xe_soft_reset (struct xe_softc *scp); 185 static void xe_stop (struct xe_softc *scp); 186 static void xe_enable_intr (struct xe_softc *scp); 187 static void xe_disable_intr (struct xe_softc *scp); 188 static void xe_setmulti (struct xe_softc *scp); 189 static void xe_setaddrs (struct xe_softc *scp); 190 static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp); 191 #if 0 192 static u_int32_t xe_compute_crc (u_int8_t *data, int len); 193 static int xe_compute_hashbit (u_int32_t crc); 194 #endif 195 196 /* 197 * MII functions 198 */ 199 static void xe_mii_sync (struct xe_softc *scp); 200 static int xe_mii_init (struct xe_softc *scp); 201 static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt); 202 static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame); 203 static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame); 204 static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg); 205 static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data); 206 207 /* 208 * Debug functions -- uncomment for VERY verbose dignostic information. 209 * Set to 1 for less verbose information 210 */ 211 /* #define XE_DEBUG 2 */ 212 #ifdef XE_DEBUG 213 #define XE_REG_DUMP(scp) xe_reg_dump((scp)) 214 #define XE_MII_DUMP(scp) xe_mii_dump((scp)) 215 static void xe_reg_dump (struct xe_softc *scp); 216 static void xe_mii_dump (struct xe_softc *scp); 217 #else 218 #define XE_REG_DUMP(scp) 219 #define XE_MII_DUMP(scp) 220 #endif 221 222 /* 223 * Fixing for RealPort cards - they need a little furtling to get the 224 * ethernet working 225 */ 226 static int 227 xe_cem56fix(device_t dev) 228 { 229 struct xe_softc *sc = (struct xe_softc *) device_get_softc(dev); 230 bus_space_tag_t bst; 231 bus_space_handle_t bsh; 232 struct resource *r; 233 int rid; 234 int ioport; 235 236 #ifdef XE_DEBUG 237 device_printf(dev, "Hacking your Realport, master\n"); 238 #endif 239 240 #if XE_DEBUG > 1 241 device_printf(dev, "Realport port 0x%0lx, size 0x%0lx\n", 242 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 243 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); 244 #endif 245 246 rid = 0; 247 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE); 248 if (!r) { 249 #if XE_DEBUG > 0 250 device_printf(dev, "Can't map in attribute memory\n"); 251 #endif 252 return -1; 253 } 254 255 bsh = rman_get_bushandle(r); 256 bst = rman_get_bustag(r); 257 258 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid, 259 PCCARD_A_MEM_ATTR); 260 261 bus_space_write_1(bst, bsh, DINGO_ECOR, DINGO_ECOR_IRQ_LEVEL | 262 DINGO_ECOR_INT_ENABLE | 263 DINGO_ECOR_IOB_ENABLE | 264 DINGO_ECOR_ETH_ENABLE); 265 ioport = bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid); 266 bus_space_write_1(bst, bsh, DINGO_EBAR0, ioport & 0xff); 267 bus_space_write_1(bst, bsh, DINGO_EBAR1, (ioport >> 8) & 0xff); 268 269 bus_space_write_1(bst, bsh, DINGO_DCOR0, DINGO_DCOR0_SF_INT); 270 bus_space_write_1(bst, bsh, DINGO_DCOR1, DINGO_DCOR1_INT_LEVEL | 271 DINGO_DCOR1_EEDIO); 272 bus_space_write_1(bst, bsh, DINGO_DCOR2, 0x00); 273 bus_space_write_1(bst, bsh, DINGO_DCOR3, 0x00); 274 bus_space_write_1(bst, bsh, DINGO_DCOR4, 0x00); 275 276 bus_release_resource(dev, SYS_RES_MEMORY, rid, r); 277 278 /* success! */ 279 return 0; 280 } 281 282 /* 283 * PCMCIA probe routine. 284 * Probe and identify the device. Called by the slot manager when the card is 285 * inserted or the machine wakes up from suspend mode. Assmes that the slot 286 * structure has been initialised already. 287 */ 288 static int 289 xe_probe(device_t dev) 290 { 291 struct xe_softc *scp = (struct xe_softc *) device_get_softc(dev); 292 bus_space_tag_t bst; 293 bus_space_handle_t bsh; 294 int buf; 295 u_char ver_str[CISTPL_BUFSIZE>>1]; 296 off_t offs; 297 int success, rc, i; 298 int rid; 299 struct resource *r; 300 301 success = 0; 302 303 #ifdef XE_DEBUG 304 device_printf(dev, "xe: Probing\n"); 305 #endif 306 307 /* Map in the CIS */ 308 rid = 0; 309 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE); 310 if (!r) { 311 #ifdef XE_DEBUG 312 device_printf(dev, "Can't map in cis\n"); 313 #endif 314 return ENOMEM; 315 } 316 bsh = rman_get_bushandle(r); 317 bst = rman_get_bustag(r); 318 buf = 0; 319 320 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid, 321 PCCARD_A_MEM_ATTR); 322 323 /* Grep through CIS looking for relevant tuples */ 324 rc = 0; 325 offs = 0; 326 do { 327 u_int16_t vendor; 328 u_int8_t rev, media, prod; 329 330 switch (CISTPL_TYPE(buf)) { 331 332 case 0x15: /* Grab version string (needed to ID some weird CE2's) */ 333 #if XE_DEBUG > 1 334 device_printf(dev, "Got version string (0x15)\n"); 335 #endif 336 for (i = 0; i < CISTPL_LEN(buf); ver_str[i] = CISTPL_DATA(buf, i++)); 337 ver_str[i] = '\0'; 338 ver_str[(CISTPL_BUFSIZE>>1) - 1] = CISTPL_LEN(buf); 339 success++; 340 break; 341 342 case 0x20: /* Figure out what type of card we have */ 343 #if XE_DEBUG > 1 344 device_printf(dev, "Got card ID (0x20)\n"); 345 #endif 346 vendor = CISTPL_DATA(buf, 0) + (CISTPL_DATA(buf, 1) << 8); 347 rev = CISTPL_DATA(buf, 2); 348 media = CISTPL_DATA(buf, 3); 349 prod = CISTPL_DATA(buf, 4); 350 351 switch (vendor) { /* Get vendor ID */ 352 case 0x0105: 353 scp->vendor = "Xircom"; break; 354 case 0x0138: 355 case 0x0183: 356 scp->vendor = "Compaq"; break; 357 case 0x0089: 358 scp->vendor = "Intel"; break; 359 default: 360 scp->vendor = "Unknown"; 361 } 362 363 if (!((prod & 0x40) && (media & 0x01))) { 364 #if XE_DEBUG > 1 365 device_printf(dev, "Not a PCMCIA Ethernet card!\n"); 366 #endif 367 rc = ENODEV; /* Not a PCMCIA Ethernet device */ 368 } else { 369 if (media & 0x10) { /* Ethernet/modem cards */ 370 #if XE_DEBUG > 1 371 device_printf(dev, "Card is Ethernet/modem combo\n"); 372 #endif 373 scp->modem = 1; 374 switch (prod & 0x0f) { 375 case 1: 376 scp->card_type = "CEM"; break; 377 case 2: 378 scp->ce2 = 1; 379 scp->card_type = "CEM2"; break; 380 case 3: 381 scp->ce2 = 1; 382 scp->card_type = "CEM3"; break; 383 case 4: 384 scp->ce2 = 1; 385 scp->card_type = "CEM33"; break; 386 case 5: 387 scp->mohawk = 1; 388 scp->card_type = "CEM56M"; break; 389 case 6: 390 case 7: /* Some kind of RealPort card */ 391 scp->mohawk = 1; 392 scp->dingo = 1; 393 scp->card_type = "CEM56"; break; 394 default: 395 rc = ENODEV; 396 } 397 } else { /* Ethernet-only cards */ 398 #if XE_DEBUG > 1 399 device_printf(dev, "Card is Ethernet only\n"); 400 #endif 401 switch (prod & 0x0f) { 402 case 1: 403 scp->card_type = "CE"; break; 404 case 2: 405 scp->ce2 = 1; 406 scp->card_type = "CE2"; break; 407 case 3: 408 scp->mohawk = 1; 409 scp->card_type = "CE3"; break; 410 default: 411 rc = ENODEV; 412 } 413 } 414 } 415 success++; 416 break; 417 418 case 0x22: /* Get MAC address */ 419 if ((CISTPL_LEN(buf) == 8) && 420 (CISTPL_DATA(buf, 0) == 0x04) && 421 (CISTPL_DATA(buf, 1) == ETHER_ADDR_LEN)) { 422 #if XE_DEBUG > 1 423 device_printf(dev, "Got MAC address (0x22)\n"); 424 #endif 425 for (i = 0; i < ETHER_ADDR_LEN; i++) 426 scp->arpcom.ac_enaddr[i] = CISTPL_DATA(buf, i+2); 427 } 428 success++; 429 break; 430 default: 431 break; 432 } 433 434 if (CISTPL_TYPE(buf) == 0xff) 435 break; 436 /* Skip to next tuple */ 437 buf += ((CISTPL_LEN(buf) + 2) << 1); 438 439 } while (1); 440 441 /* unmap the cis */ 442 bus_release_resource(dev, SYS_RES_MEMORY, rid, r); 443 444 if (rc) 445 return(rc); 446 447 /* Die now if something went wrong above */ 448 if (success < 3) 449 return ENXIO; 450 451 /* Check for certain strange CE2's that look like CE's */ 452 if (strcmp(scp->card_type, "CE") == 0) { 453 u_char *str = ver_str; 454 #if XE_DEBUG > 1 455 device_printf(dev, "Checking for weird CE2 string\n"); 456 #endif 457 str += strlen(str) + 1; /* Skip forward to 3rd version string */ 458 str += strlen(str) + 1; 459 str += strlen(str) + 1; 460 for (i = 0; i < strlen(str) - 2; i++) { 461 if (bcmp(&str[i], "CE2", 3) ==0) { /* Look for "CE2" string */ 462 scp->card_type = "CE2"; 463 } 464 } 465 } 466 467 /* Reject unsupported cards */ 468 if (strcmp(scp->card_type, "CE") == 0 || strcmp(scp->card_type, "CEM") == 0) { 469 device_printf(dev, "Sorry, your %s card is not supported :(\n", 470 scp->card_type); 471 return ENODEV; 472 } 473 474 /* Success */ 475 return 0; 476 } 477 478 /* 479 * The device entry is being removed, probably because someone ejected the 480 * card. The interface should have been brought down manually before calling 481 * this function; if not you may well lose packets. In any case, I shut down 482 * the card and the interface, and hope for the best. 483 */ 484 static int 485 xe_detach(device_t dev) { 486 struct xe_softc *sc = device_get_softc(dev); 487 488 sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING; 489 ether_ifdetach(&sc->arpcom.ac_if); 490 xe_deactivate(dev); 491 return 0; 492 } 493 494 /* 495 * Attach a device. 496 */ 497 static int 498 xe_attach (device_t dev) { 499 struct xe_softc *scp = device_get_softc(dev); 500 int err; 501 502 #ifdef XE_DEBUG 503 device_printf(dev, "attach\n"); 504 #endif 505 506 if ((err = xe_activate(dev)) != 0) 507 return (err); 508 509 /* Fill in some private data */ 510 scp->ifp = &scp->arpcom.ac_if; 511 scp->ifm = &scp->ifmedia; 512 scp->autoneg_status = 0; 513 514 /* Hack RealPorts into submission */ 515 if (scp->dingo && xe_cem56fix(dev) < 0) { 516 device_printf(dev, "Unable to fix your RealPort\n"); 517 xe_deactivate(dev); 518 return ENODEV; 519 } 520 521 /* Hopefully safe to read this here */ 522 XE_SELECT_PAGE(4); 523 scp->version = XE_INB(XE_BOV); 524 525 scp->dev = dev; 526 /* Initialise the ifnet structure */ 527 scp->ifp->if_softc = scp; 528 if_initname(scp->ifp, "xe", device_get_unit(dev)); 529 scp->ifp->if_timer = 0; 530 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 531 scp->ifp->if_linkmib = &scp->mibdata; 532 scp->ifp->if_linkmiblen = sizeof scp->mibdata; 533 scp->ifp->if_start = xe_start; 534 scp->ifp->if_ioctl = xe_ioctl; 535 scp->ifp->if_watchdog = xe_watchdog; 536 scp->ifp->if_init = xe_init; 537 scp->ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 538 539 /* Initialise the ifmedia structure */ 540 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status); 541 callout_handle_init(&scp->chand); 542 543 /* 544 * Fill in supported media types. Some cards _do_ support full duplex 545 * operation, but this driver doesn't, yet. Therefore we leave those modes 546 * out of the list. We support some form of autoselection in all cases. 547 */ 548 if (scp->mohawk) { 549 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL); 550 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 551 } 552 else { 553 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 554 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL); 555 } 556 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL); 557 558 /* Default is to autoselect best supported media type */ 559 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO); 560 561 /* Print some useful information */ 562 device_printf(dev, "%s %s, bonding version %#x%s%s\n", 563 scp->vendor, 564 scp->card_type, 565 scp->version, 566 scp->mohawk ? ", 100Mbps capable" : "", 567 scp->modem ? ", with modem" : ""); 568 if (scp->mohawk) { 569 XE_SELECT_PAGE(0x10); 570 device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n", 571 XE_INW(XE_DINGOID), 572 XE_INW(XE_RevID), 573 XE_INW(XE_VendorID)); 574 } 575 if (scp->ce2) { 576 XE_SELECT_PAGE(0x45); 577 device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV)); 578 } 579 580 /* Attach the interface */ 581 ether_ifattach(scp->ifp, scp->arpcom.ac_enaddr); 582 583 /* Done */ 584 return 0; 585 } 586 587 588 /* 589 * Initialize device. Completes the reset procedure on the card and starts 590 * output. If there's an autonegotiation in progress we DON'T do anything; 591 * the media selection code will call us again when it's done. 592 */ 593 static void 594 xe_init(void *xscp) { 595 struct xe_softc *scp = xscp; 596 int s; 597 598 #ifdef XE_DEBUG 599 device_printf(scp->dev, "init\n"); 600 #endif 601 602 if (TAILQ_EMPTY(&scp->ifp->if_addrhead)) return; 603 604 /* Reset transmitter flags */ 605 scp->tx_queued = 0; 606 scp->tx_tpr = 0; 607 scp->tx_collisions = 0; 608 scp->ifp->if_timer = 0; 609 610 s = splimp(); 611 612 XE_SELECT_PAGE(0x42); 613 XE_OUTB(XE_SWC0, 0x20); /* Disable source insertion (WTF is that?) */ 614 615 /* 616 * Set the 'local memory dividing line' -- splits the 32K card memory into 617 * 8K for transmit buffers and 24K for receive. This is done automatically 618 * on newer revision cards. 619 */ 620 if (scp->srev != 1) { 621 XE_SELECT_PAGE(2); 622 XE_OUTW(XE_RBS, 0x2000); 623 } 624 625 /* Set up multicast addresses */ 626 xe_setmulti(scp); 627 628 /* Fix the data offset register -- reset leaves it off-by-one */ 629 XE_SELECT_PAGE(0); 630 XE_OUTW(XE_DO, 0x2000); 631 632 /* 633 * Set MAC interrupt masks and clear status regs. The bit names are direct 634 * from the Linux code; I have no idea what most of them do. 635 */ 636 XE_SELECT_PAGE(0x40); /* Bit 7..0 */ 637 XE_OUTB(XE_RX0Msk, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */ 638 XE_OUTB(XE_TX0Msk, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ 639 XE_OUTB(XE_TX0Msk+1, 0xb0); /* rsv, rsv, PTD, EXT, rsv, rsv, rsv, rsv */ 640 XE_OUTB(XE_RST0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */ 641 XE_OUTB(XE_TXST0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ 642 XE_OUTB(XE_TXST1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */ 643 644 /* 645 * Check for an in-progress autonegotiation. If one is active, just set 646 * IFF_RUNNING and return. The media selection code will call us again when 647 * it's done. 648 */ 649 if (scp->autoneg_status) { 650 scp->ifp->if_flags |= IFF_RUNNING; 651 } 652 else { 653 /* Enable receiver, put MAC online */ 654 XE_SELECT_PAGE(0x40); 655 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); 656 657 /* Set up IMR, enable interrupts */ 658 xe_enable_intr(scp); 659 660 /* Attempt to start output */ 661 scp->ifp->if_flags |= IFF_RUNNING; 662 scp->ifp->if_flags &= ~IFF_OACTIVE; 663 xe_start(scp->ifp); 664 } 665 666 (void)splx(s); 667 } 668 669 670 /* 671 * Start output on interface. We make two assumptions here: 672 * 1) that the current priority is set to splimp _before_ this code 673 * is called *and* is returned to the appropriate priority after 674 * return 675 * 2) that the IFF_OACTIVE flag is checked before this code is called 676 * (i.e. that the output part of the interface is idle) 677 */ 678 static void 679 xe_start(struct ifnet *ifp) { 680 struct xe_softc *scp = ifp->if_softc; 681 struct mbuf *mbp; 682 683 /* 684 * Loop while there are packets to be sent, and space to send them. 685 */ 686 while (1) { 687 IF_DEQUEUE(&ifp->if_snd, mbp); /* Suck a packet off the send queue */ 688 689 if (mbp == NULL) { 690 /* 691 * We are using the !OACTIVE flag to indicate to the outside world that 692 * we can accept an additional packet rather than that the transmitter 693 * is _actually_ active. Indeed, the transmitter may be active, but if 694 * we haven't filled all the buffers with data then we still want to 695 * accept more. 696 */ 697 ifp->if_flags &= ~IFF_OACTIVE; 698 return; 699 } 700 701 if (xe_pio_write_packet(scp, mbp) != 0) { 702 IF_PREPEND(&ifp->if_snd, mbp); /* Push the packet back onto the queue */ 703 ifp->if_flags |= IFF_OACTIVE; 704 return; 705 } 706 707 /* Tap off here if there is a bpf listener */ 708 if (ifp->if_bpf) { 709 #if XE_DEBUG > 1 710 device_printf(scp->dev, "sending output packet to BPF\n"); 711 #endif 712 bpf_mtap(ifp, mbp); 713 } 714 715 ifp->if_timer = 5; /* In case we don't hear from the card again */ 716 scp->tx_queued++; 717 718 m_freem(mbp); 719 } 720 } 721 722 723 /* 724 * Process an ioctl request. Adapted from the ed driver. 725 */ 726 static int 727 xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) { 728 struct xe_softc *scp; 729 int s, error; 730 731 scp = ifp->if_softc; 732 error = 0; 733 734 s = splimp(); 735 736 switch (command) { 737 738 case SIOCSIFADDR: 739 case SIOCGIFADDR: 740 case SIOCSIFMTU: 741 error = ether_ioctl(ifp, command, data); 742 break; 743 744 case SIOCSIFFLAGS: 745 /* 746 * If the interface is marked up and stopped, then start it. If it is 747 * marked down and running, then stop it. 748 */ 749 if (ifp->if_flags & IFF_UP) { 750 if (!(ifp->if_flags & IFF_RUNNING)) { 751 xe_hard_reset(scp); 752 xe_setmedia(scp); 753 xe_init(scp); 754 } 755 } 756 else { 757 if (ifp->if_flags & IFF_RUNNING) 758 xe_stop(scp); 759 } 760 761 case SIOCADDMULTI: 762 case SIOCDELMULTI: 763 /* 764 * Multicast list has (maybe) changed; set the hardware filter 765 * accordingly. This also serves to deal with promiscuous mode if we have 766 * a BPF listener active. 767 */ 768 xe_setmulti(scp); 769 error = 0; 770 break; 771 772 case SIOCSIFMEDIA: 773 case SIOCGIFMEDIA: 774 /* 775 * Someone wants to get/set media options. 776 */ 777 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command); 778 break; 779 780 default: 781 error = EINVAL; 782 } 783 784 (void)splx(s); 785 786 return error; 787 } 788 789 790 /* 791 * Card interrupt handler. 792 * 793 * This function is probably more complicated than it needs to be, as it 794 * attempts to deal with the case where multiple packets get sent between 795 * interrupts. This is especially annoying when working out the collision 796 * stats. Not sure whether this case ever really happens or not (maybe on a 797 * slow/heavily loaded machine?) so it's probably best to leave this like it 798 * is. 799 * 800 * Note that the crappy PIO used to get packets on and off the card means that 801 * you will spend a lot of time in this routine -- I can get my P150 to spend 802 * 90% of its time servicing interrupts if I really hammer the network. Could 803 * fix this, but then you'd start dropping/losing packets. The moral of this 804 * story? If you want good network performance _and_ some cycles left over to 805 * get your work done, don't buy a Xircom card. Or convince them to tell me 806 * how to do memory-mapped I/O :) 807 */ 808 static void 809 xe_intr(void *xscp) 810 { 811 struct xe_softc *scp = (struct xe_softc *) xscp; 812 struct ifnet *ifp; 813 int result; 814 u_int16_t rx_bytes, rxs, txs; 815 u_int8_t psr, isr, esr, rsr; 816 817 ifp = &scp->arpcom.ac_if; 818 rx_bytes = 0; /* Bytes received on this interrupt */ 819 result = 0; /* Set true if the interrupt is for us */ 820 821 if (scp->mohawk) { 822 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 823 } 824 825 psr = XE_INB(XE_PR); /* Stash the current register page */ 826 827 /* 828 * Read ISR to see what caused this interrupt. Note that this clears the 829 * ISR on CE2 type cards. 830 */ 831 if ((isr = XE_INB(XE_ISR)) && isr != 0xff) { 832 833 result = 1; /* This device did generate an int */ 834 esr = XE_INB(XE_ESR); /* Read the other status registers */ 835 XE_SELECT_PAGE(0x40); 836 rxs = XE_INB(XE_RST0); 837 XE_OUTB(XE_RST0, ~rxs & 0xff); 838 txs = XE_INB(XE_TXST0); 839 txs |= XE_INB(XE_TXST1) << 8; 840 XE_OUTB(XE_TXST0, 0); 841 XE_OUTB(XE_TXST1, 0); 842 XE_SELECT_PAGE(0); 843 844 #if XE_DEBUG > 2 845 printf("xe%d: ISR=%#2.2x ESR=%#2.2x RST=%#2.2x TXST=%#4.4x\n", unit, isr, esr, rxs, txs); 846 #endif 847 848 /* 849 * Handle transmit interrupts 850 */ 851 if (isr & XE_ISR_TX_PACKET) { 852 u_int8_t new_tpr, sent; 853 854 if ((new_tpr = XE_INB(XE_TPR)) < scp->tx_tpr) /* Update packet count */ 855 sent = (0xff - scp->tx_tpr) + new_tpr; /* TPR rolled over */ 856 else 857 sent = new_tpr - scp->tx_tpr; 858 859 if (sent > 0) { /* Packets sent since last interrupt */ 860 scp->tx_tpr = new_tpr; 861 scp->tx_queued -= sent; 862 ifp->if_opackets += sent; 863 ifp->if_collisions += scp->tx_collisions; 864 865 /* 866 * Collision stats are a PITA. If multiples frames have been sent, we 867 * distribute any outstanding collision count equally amongst them. 868 * However, if we're missing interrupts we're quite likely to also 869 * miss some collisions; thus the total count will be off anyway. 870 * Likewise, if we miss a frame dropped due to excessive collisions 871 * any outstanding collisions count will be held against the next 872 * frame to be successfully sent. Hopefully it averages out in the 873 * end! 874 * XXX - This will screw up if tx_collisions/sent > 14. FIX IT! 875 */ 876 switch (scp->tx_collisions) { 877 case 0: 878 break; 879 case 1: 880 scp->mibdata.dot3StatsSingleCollisionFrames++; 881 scp->mibdata.dot3StatsCollFrequencies[0]++; 882 break; 883 default: 884 if (sent == 1) { 885 scp->mibdata.dot3StatsMultipleCollisionFrames++; 886 scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++; 887 } 888 else { /* Distribute across multiple frames */ 889 scp->mibdata.dot3StatsMultipleCollisionFrames += sent; 890 scp->mibdata. 891 dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent; 892 scp->mibdata. 893 dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent; 894 } 895 } 896 scp->tx_collisions = 0; 897 } 898 ifp->if_timer = 0; 899 ifp->if_flags &= ~IFF_OACTIVE; 900 } 901 if (txs & 0x0002) { /* Excessive collisions (packet dropped) */ 902 ifp->if_collisions += 16; 903 ifp->if_oerrors++; 904 scp->tx_collisions = 0; 905 scp->mibdata.dot3StatsExcessiveCollisions++; 906 scp->mibdata.dot3StatsMultipleCollisionFrames++; 907 scp->mibdata.dot3StatsCollFrequencies[15]++; 908 XE_OUTB(XE_CR, XE_CR_RESTART_TX); 909 } 910 if (txs & 0x0040) /* Transmit aborted -- probably collisions */ 911 scp->tx_collisions++; 912 913 914 /* 915 * Handle receive interrupts 916 */ 917 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) { 918 919 if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) { 920 struct ether_header *ehp; 921 struct mbuf *mbp; 922 u_int16_t len; 923 924 len = XE_INW(XE_RBC); 925 926 if (len == 0) 927 continue; 928 929 #if 0 930 /* 931 * Limit the amount of time we spend in this loop, dropping packets if 932 * necessary. The Linux code does this with considerably more 933 * finesse, adjusting the threshold dynamically. 934 */ 935 if ((rx_bytes += len) > 22000) { 936 ifp->if_iqdrops++; 937 scp->mibData.dot3StatsMissedFrames++; 938 XE_OUTW(XE_DO, 0x8000); 939 continue; 940 } 941 #endif 942 943 if (len & 0x01) 944 len++; 945 946 MGETHDR(mbp, MB_DONTWAIT, MT_DATA); /* Allocate a header mbuf */ 947 if (mbp != NULL) { 948 mbp->m_pkthdr.rcvif = ifp; 949 mbp->m_pkthdr.len = mbp->m_len = len; 950 951 /* 952 * If the mbuf header isn't big enough for the packet, attach an 953 * mbuf cluster to hold it. The +2 is to allow for the nasty little 954 * alignment hack below. 955 */ 956 if (len + 2 > MHLEN) { 957 MCLGET(mbp, MB_DONTWAIT); 958 if ((mbp->m_flags & M_EXT) == 0) { 959 m_freem(mbp); 960 mbp = NULL; 961 } 962 } 963 } 964 965 if (mbp != NULL) { 966 /* 967 * The Ethernet header is 14 bytes long; thus the actual packet data 968 * won't be 32-bit aligned when it's dumped into the mbuf. We 969 * offset everything by 2 bytes to fix this. Apparently the 970 * alignment is important for NFS, damn its eyes. 971 */ 972 mbp->m_data += 2; 973 ehp = mtod(mbp, struct ether_header *); 974 975 /* 976 * Now get the packet, including the Ethernet header and trailer (?) 977 * We use programmed I/O, because we don't know how to do shared 978 * memory with these cards. So yes, it's real slow, and heavy on 979 * the interrupts (CPU on my P150 maxed out at ~950KBps incoming). 980 */ 981 if (scp->srev == 0) { /* Workaround a bug in old cards */ 982 u_short rhs; 983 984 XE_SELECT_PAGE(5); 985 rhs = XE_INW(XE_RHSA); 986 XE_SELECT_PAGE(0); 987 988 rhs += 3; /* Skip control info */ 989 990 if (rhs >= 0x8000) 991 rhs = 0; 992 993 if (rhs + len > 0x8000) { 994 int i; 995 996 /* 997 * XXX - This i-- seems very wrong, but it's what the Linux guys 998 * XXX - do. Need someone with an old CE2 to test this for me. 999 * XXX - 99/3/28: Changed the first i-- to an i++, maybe that'll 1000 * XXX - fix it? It seems as though the previous version would 1001 * XXX - have caused an infinite loop (what, another one?). 1002 */ 1003 for (i = 0; i < len; i++, rhs++) { 1004 ((char *)ehp)[i] = XE_INB(XE_EDP); 1005 if (rhs == 0x8000) { 1006 rhs = 0; 1007 i--; 1008 } 1009 } 1010 } 1011 else 1012 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, 1013 (u_int16_t *) ehp, len >> 1); 1014 } 1015 else 1016 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, 1017 (u_int16_t *) ehp, len >> 1); 1018 1019 /* Deliver packet to upper layers */ 1020 if (mbp != NULL) { 1021 mbp->m_pkthdr.len = mbp->m_len = len; 1022 (*ifp->if_input)(ifp, mbp); /* Send the packet on its way */ 1023 ifp->if_ipackets++; /* Success! */ 1024 } 1025 XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */ 1026 } 1027 } 1028 else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */ 1029 scp->mibdata.dot3StatsFrameTooLongs++; 1030 ifp->if_ierrors++; 1031 } 1032 else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */ 1033 scp->mibdata.dot3StatsFCSErrors++; 1034 ifp->if_ierrors++; 1035 } 1036 else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */ 1037 scp->mibdata.dot3StatsAlignmentErrors++; 1038 ifp->if_ierrors++; 1039 } 1040 } 1041 if (rxs & 0x10) { /* Receiver overrun */ 1042 scp->mibdata.dot3StatsInternalMacReceiveErrors++; 1043 ifp->if_ierrors++; 1044 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN); 1045 } 1046 } 1047 1048 XE_SELECT_PAGE(psr); /* Restore saved page */ 1049 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */ 1050 1051 /* Could force an int here, instead of dropping packets? */ 1052 /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */ 1053 1054 return; 1055 } 1056 1057 1058 /* 1059 * Device timeout/watchdog routine. Called automatically if we queue a packet 1060 * for transmission but don't get an interrupt within a specified timeout 1061 * (usually 5 seconds). When this happens we assume the worst and reset the 1062 * card. 1063 */ 1064 static void 1065 xe_watchdog(struct ifnet *ifp) { 1066 struct xe_softc *scp = ifp->if_softc; 1067 1068 device_printf(scp->dev, "watchdog timeout; resetting card\n"); 1069 scp->tx_timeouts++; 1070 ifp->if_oerrors += scp->tx_queued; 1071 xe_stop(scp); 1072 xe_hard_reset(scp); 1073 xe_setmedia(scp); 1074 xe_init(scp); 1075 } 1076 1077 1078 /* 1079 * Change media selection. 1080 */ 1081 static int 1082 xe_media_change(struct ifnet *ifp) { 1083 struct xe_softc *scp = ifp->if_softc; 1084 1085 #ifdef XE_DEBUG 1086 printf("%s: media_change\n", ifp->if_xname); 1087 #endif 1088 1089 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER) 1090 return(EINVAL); 1091 1092 /* 1093 * Some card/media combos aren't always possible -- filter those out here. 1094 */ 1095 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO || 1096 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok) 1097 return (EINVAL); 1098 1099 xe_setmedia(scp); 1100 1101 return 0; 1102 } 1103 1104 1105 /* 1106 * Return current media selection. 1107 */ 1108 static void 1109 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) { 1110 1111 #ifdef XE_DEBUG 1112 printf("%s: media_status\n", ifp->if_xname); 1113 #endif 1114 1115 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media; 1116 1117 return; 1118 } 1119 1120 1121 /* 1122 * Select active media. 1123 */ 1124 static void xe_setmedia(void *xscp) { 1125 struct xe_softc *scp = xscp; 1126 u_int16_t bmcr, bmsr, anar, lpar; 1127 1128 #ifdef XE_DEBUG 1129 device_printf(scp->dev, "setmedia\n"); 1130 #endif 1131 1132 /* Cancel any pending timeout */ 1133 untimeout(xe_setmedia, scp, scp->chand); 1134 xe_disable_intr(scp); 1135 1136 /* Select media */ 1137 scp->media = IFM_ETHER; 1138 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) { 1139 1140 case IFM_AUTO: /* Autoselect media */ 1141 scp->media = IFM_ETHER|IFM_AUTO; 1142 1143 /* 1144 * Autoselection is really awful. It goes something like this: 1145 * 1146 * Wait until the transmitter goes idle (2sec timeout). 1147 * Reset card 1148 * IF a 100Mbit PHY exists 1149 * Start NWAY autonegotiation (3.5sec timeout) 1150 * IF that succeeds 1151 * Select 100baseTX or 10baseT, whichever was detected 1152 * ELSE 1153 * Reset card 1154 * IF a 100Mbit PHY exists 1155 * Try to force a 100baseTX link (3sec timeout) 1156 * IF that succeeds 1157 * Select 100baseTX 1158 * ELSE 1159 * Disable the PHY 1160 * ENDIF 1161 * ENDIF 1162 * ENDIF 1163 * ENDIF 1164 * IF nothing selected so far 1165 * IF a 100Mbit PHY exists 1166 * Select 10baseT 1167 * ELSE 1168 * Select 10baseT or 10base2, whichever is connected 1169 * ENDIF 1170 * ENDIF 1171 */ 1172 switch (scp->autoneg_status) { 1173 1174 case XE_AUTONEG_NONE: 1175 #if XE_DEBUG > 1 1176 device_printf(scp->dev, "Waiting for idle transmitter\n"); 1177 #endif 1178 scp->arpcom.ac_if.if_flags |= IFF_OACTIVE; 1179 scp->autoneg_status = XE_AUTONEG_WAITING; 1180 scp->chand = timeout(xe_setmedia, scp, hz * 2); 1181 return; 1182 1183 case XE_AUTONEG_WAITING: 1184 xe_soft_reset(scp); 1185 if (scp->phy_ok) { 1186 #if XE_DEBUG > 1 1187 device_printf(scp->dev, "Starting autonegotiation\n"); 1188 #endif 1189 bmcr = xe_phy_readreg(scp, PHY_BMCR); 1190 bmcr &= ~(PHY_BMCR_AUTONEGENBL); 1191 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1192 anar = xe_phy_readreg(scp, PHY_ANAR); 1193 anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL); 1194 anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF; 1195 xe_phy_writereg(scp, PHY_ANAR, anar); 1196 bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; 1197 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1198 scp->autoneg_status = XE_AUTONEG_STARTED; 1199 scp->chand = timeout(xe_setmedia, scp, hz * 7/2); 1200 return; 1201 } 1202 else { 1203 scp->autoneg_status = XE_AUTONEG_FAIL; 1204 } 1205 break; 1206 1207 case XE_AUTONEG_STARTED: 1208 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1209 lpar = xe_phy_readreg(scp, PHY_LPAR); 1210 if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) { 1211 #if XE_DEBUG > 1 1212 device_printf(scp->dev, "Autonegotiation complete!\n"); 1213 #endif 1214 /* 1215 * XXX - Shouldn't have to do this, but (on my hub at least) the 1216 * XXX - transmitter won't work after a successful autoneg. So we see 1217 * XXX - what the negotiation result was and force that mode. I'm 1218 * XXX - sure there is an easy fix for this. 1219 */ 1220 if (lpar & PHY_LPAR_100BTXHALF) { 1221 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1222 XE_MII_DUMP(scp); 1223 XE_SELECT_PAGE(2); 1224 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1225 scp->media = IFM_ETHER|IFM_100_TX; 1226 scp->autoneg_status = XE_AUTONEG_NONE; 1227 } 1228 else { 1229 /* 1230 * XXX - Bit of a hack going on in here. 1231 * XXX - This is derived from Ken Hughes patch to the Linux driver 1232 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B 1233 * XXX - cards. What's a CE3B and how's it differ from a plain CE3? 1234 * XXX - these are the things we need to find out. 1235 */ 1236 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1237 XE_SELECT_PAGE(2); 1238 /* BEGIN HACK */ 1239 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1240 XE_SELECT_PAGE(0x42); 1241 XE_OUTB(XE_SWC1, 0x80); 1242 scp->media = IFM_ETHER|IFM_10_T; 1243 scp->autoneg_status = XE_AUTONEG_NONE; 1244 /* END HACK */ 1245 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */ 1246 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/ 1247 } 1248 } 1249 else { 1250 #if XE_DEBUG > 1 1251 device_printf(scp->dev, "Autonegotiation failed; trying 100baseTX\n"); 1252 #endif 1253 XE_MII_DUMP(scp); 1254 xe_soft_reset(scp); 1255 if (scp->phy_ok) { 1256 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1257 scp->autoneg_status = XE_AUTONEG_100TX; 1258 scp->chand = timeout(xe_setmedia, scp, hz * 3); 1259 return; 1260 } 1261 else { 1262 scp->autoneg_status = XE_AUTONEG_FAIL; 1263 } 1264 } 1265 break; 1266 1267 case XE_AUTONEG_100TX: 1268 (void)xe_phy_readreg(scp, PHY_BMSR); 1269 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1270 if (bmsr & PHY_BMSR_LINKSTAT) { 1271 #if XE_DEBUG > 1 1272 device_printf(scp->dev, "Got 100baseTX link!\n"); 1273 #endif 1274 XE_MII_DUMP(scp); 1275 XE_SELECT_PAGE(2); 1276 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1277 scp->media = IFM_ETHER|IFM_100_TX; 1278 scp->autoneg_status = XE_AUTONEG_NONE; 1279 } 1280 else { 1281 #if XE_DEBUG > 1 1282 device_printf(scp->dev, "Autonegotiation failed; disabling PHY\n"); 1283 #endif 1284 XE_MII_DUMP(scp); 1285 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1286 XE_SELECT_PAGE(2); 1287 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */ 1288 scp->autoneg_status = XE_AUTONEG_FAIL; 1289 } 1290 break; 1291 } 1292 1293 /* 1294 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then 1295 * either autonegotiation failed, or never got started to begin with. In 1296 * either case, select a suitable 10Mbit media and hope it works. We 1297 * don't need to reset the card again, since it will have been done 1298 * already by the big switch above. 1299 */ 1300 if (scp->autoneg_status == XE_AUTONEG_FAIL) { 1301 #if XE_DEBUG > 1 1302 device_printf(scp->dev, "Selecting 10baseX\n"); 1303 #endif 1304 if (scp->mohawk) { 1305 XE_SELECT_PAGE(0x42); 1306 XE_OUTB(XE_SWC1, 0x80); 1307 scp->media = IFM_ETHER|IFM_10_T; 1308 scp->autoneg_status = XE_AUTONEG_NONE; 1309 } 1310 else { 1311 XE_SELECT_PAGE(4); 1312 XE_OUTB(XE_GPR0, 4); 1313 DELAY(50000); 1314 XE_SELECT_PAGE(0x42); 1315 XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0); 1316 scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2); 1317 scp->autoneg_status = XE_AUTONEG_NONE; 1318 } 1319 } 1320 break; 1321 1322 1323 /* 1324 * If a specific media has been requested, we just reset the card and 1325 * select it (one small exception -- if 100baseTX is requested by there is 1326 * no PHY, we fall back to 10baseT operation). 1327 */ 1328 case IFM_100_TX: /* Force 100baseTX */ 1329 xe_soft_reset(scp); 1330 if (scp->phy_ok) { 1331 #if XE_DEBUG > 1 1332 device_printf(scp->dev, "Selecting 100baseTX\n"); 1333 #endif 1334 XE_SELECT_PAGE(0x42); 1335 XE_OUTB(XE_SWC1, 0); 1336 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1337 XE_SELECT_PAGE(2); 1338 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1339 scp->media |= IFM_100_TX; 1340 break; 1341 } 1342 /* FALLTHROUGH */ 1343 1344 case IFM_10_T: /* Force 10baseT */ 1345 xe_soft_reset(scp); 1346 #if XE_DEBUG > 1 1347 device_printf(scp->dev, "Selecting 10baseT\n"); 1348 #endif 1349 if (scp->phy_ok) { 1350 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1351 XE_SELECT_PAGE(2); 1352 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */ 1353 } 1354 XE_SELECT_PAGE(0x42); 1355 XE_OUTB(XE_SWC1, 0x80); 1356 scp->media |= IFM_10_T; 1357 break; 1358 1359 case IFM_10_2: 1360 xe_soft_reset(scp); 1361 #if XE_DEBUG > 1 1362 device_printf(scp->dev, "Selecting 10base2\n"); 1363 #endif 1364 XE_SELECT_PAGE(0x42); 1365 XE_OUTB(XE_SWC1, 0xc0); 1366 scp->media |= IFM_10_2; 1367 break; 1368 } 1369 1370 1371 /* 1372 * Finally, the LEDs are set to match whatever media was chosen and the 1373 * transmitter is unblocked. 1374 */ 1375 #if XE_DEBUG > 1 1376 device_printf(scp->dev, "Setting LEDs\n"); 1377 #endif 1378 XE_SELECT_PAGE(2); 1379 switch (IFM_SUBTYPE(scp->media)) { 1380 case IFM_100_TX: 1381 case IFM_10_T: 1382 XE_OUTB(XE_LED, 0x3b); 1383 if (scp->dingo) 1384 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */ 1385 break; 1386 1387 case IFM_10_2: 1388 XE_OUTB(XE_LED, 0x3a); 1389 break; 1390 } 1391 1392 /* Restart output? */ 1393 scp->ifp->if_flags &= ~IFF_OACTIVE; 1394 xe_init(scp); 1395 } 1396 1397 1398 /* 1399 * Hard reset (power cycle) the card. 1400 */ 1401 static void 1402 xe_hard_reset(struct xe_softc *scp) { 1403 int s; 1404 1405 #ifdef XE_DEBUG 1406 device_printf(scp->dev, "hard_reset\n"); 1407 #endif 1408 1409 s = splimp(); 1410 1411 /* 1412 * Power cycle the card. 1413 */ 1414 XE_SELECT_PAGE(4); 1415 XE_OUTB(XE_GPR1, 0); /* Power off */ 1416 DELAY(40000); 1417 1418 if (scp->mohawk) 1419 XE_OUTB(XE_GPR1, 1); /* And back on again */ 1420 else 1421 XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */ 1422 DELAY(40000); 1423 XE_SELECT_PAGE(0); 1424 1425 (void)splx(s); 1426 } 1427 1428 1429 /* 1430 * Soft reset the card. Also makes sure that the ML6692 and 10Mbit controller 1431 * are powered up, sets the silicon revision number in softc, disables 1432 * interrupts and checks for the prescence of a 100Mbit PHY. This should 1433 * leave us in a position where we can access the PHY and do media 1434 * selection. The function imposes a 0.5s delay while the hardware powers up. 1435 */ 1436 static void 1437 xe_soft_reset(struct xe_softc *scp) { 1438 int s; 1439 1440 #ifdef XE_DEBUG 1441 device_printf(scp->dev, "soft_reset\n"); 1442 #endif 1443 1444 s = splimp(); 1445 1446 /* 1447 * Reset the card, (again). 1448 */ 1449 XE_SELECT_PAGE(0); 1450 XE_OUTB(XE_CR, XE_CR_SOFT_RESET); 1451 DELAY(40000); 1452 XE_OUTB(XE_CR, 0); 1453 DELAY(40000); 1454 1455 if (scp->mohawk) { 1456 /* 1457 * set GP1 and GP2 as outputs (bits 2 & 3) 1458 * set GP1 low to power on the ML6692 (bit 0) 1459 * set GP2 high to power on the 10Mhz chip (bit 1) 1460 */ 1461 XE_SELECT_PAGE(4); 1462 XE_OUTB(XE_GPR0, 0x0e); 1463 } 1464 1465 /* 1466 * Wait for everything to wake up. 1467 */ 1468 DELAY(500000); 1469 1470 /* 1471 * Get silicon revision number. 1472 */ 1473 XE_SELECT_PAGE(4); 1474 if (scp->mohawk) 1475 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4; 1476 else 1477 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4; 1478 #ifdef XE_DEBUG 1479 device_printf(scp->dev, "silicon revision = %d\n", scp->srev); 1480 #endif 1481 1482 /* 1483 * Shut off interrupts. 1484 */ 1485 xe_disable_intr(scp); 1486 1487 /* 1488 * Check for PHY. 1489 */ 1490 if (scp->mohawk) { 1491 scp->phy_ok = xe_mii_init(scp); 1492 } 1493 1494 XE_SELECT_PAGE(0); 1495 1496 (void)splx(s); 1497 } 1498 1499 1500 /* 1501 * Take interface offline. This is done by powering down the device, which I 1502 * assume means just shutting down the transceiver and Ethernet logic. This 1503 * requires a _hard_ reset to recover from, as we need to power up again. 1504 */ 1505 static void 1506 xe_stop(struct xe_softc *scp) { 1507 int s; 1508 1509 #ifdef XE_DEBUG 1510 device_printf(scp->dev, "stop\n"); 1511 #endif 1512 1513 s = splimp(); 1514 1515 /* 1516 * Shut off interrupts. 1517 */ 1518 xe_disable_intr(scp); 1519 1520 /* 1521 * Power down. 1522 */ 1523 XE_SELECT_PAGE(4); 1524 XE_OUTB(XE_GPR1, 0); 1525 XE_SELECT_PAGE(0); 1526 1527 /* 1528 * ~IFF_RUNNING == interface down. 1529 */ 1530 scp->ifp->if_flags &= ~IFF_RUNNING; 1531 scp->ifp->if_flags &= ~IFF_OACTIVE; 1532 scp->ifp->if_timer = 0; 1533 1534 (void)splx(s); 1535 } 1536 1537 1538 /* 1539 * Enable Ethernet interrupts from the card. 1540 */ 1541 static void 1542 xe_enable_intr(struct xe_softc *scp) { 1543 #ifdef XE_DEBUG 1544 device_printf(scp->dev, "enable_intr\n"); 1545 #endif 1546 1547 XE_SELECT_PAGE(1); 1548 XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */ 1549 XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */ 1550 DELAY(1); 1551 1552 XE_SELECT_PAGE(0); 1553 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */ 1554 if (scp->modem && !scp->dingo) { /* This bit is just magic */ 1555 if (!(XE_INB(0x10) & 0x01)) { 1556 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */ 1557 } 1558 } 1559 } 1560 1561 1562 /* 1563 * Disable all Ethernet interrupts from the card. 1564 */ 1565 static void 1566 xe_disable_intr(struct xe_softc *scp) { 1567 #ifdef XE_DEBUG 1568 device_printf(scp->dev, "disable_intr\n"); 1569 #endif 1570 1571 XE_SELECT_PAGE(0); 1572 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 1573 if (scp->modem && !scp->dingo) { /* More magic (does this work?) */ 1574 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */ 1575 } 1576 1577 XE_SELECT_PAGE(1); 1578 XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */ 1579 XE_OUTB(XE_IMR1, 0); 1580 XE_SELECT_PAGE(0); 1581 } 1582 1583 1584 /* 1585 * Set up multicast filter and promiscuous mode 1586 */ 1587 static void 1588 xe_setmulti(struct xe_softc *scp) { 1589 struct ifnet *ifp; 1590 struct ifmultiaddr *maddr; 1591 int count; 1592 1593 ifp = &scp->arpcom.ac_if; 1594 maddr = ifp->if_multiaddrs.lh_first; 1595 1596 /* Get length of multicast list */ 1597 for (count = 0; maddr != NULL; maddr = maddr->ifma_link.le_next, count++); 1598 1599 if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) { 1600 /* 1601 * Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are 1602 * set, or if we have been asked to deal with more than 9 multicast 1603 * addresses. To do this: set MPE and PME in SWC1 1604 */ 1605 XE_SELECT_PAGE(0x42); 1606 XE_OUTB(XE_SWC1, 0x06); 1607 } 1608 else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) { 1609 /* 1610 * Program the filters for up to 9 addresses 1611 */ 1612 XE_SELECT_PAGE(0x42); 1613 XE_OUTB(XE_SWC1, 0x01); 1614 XE_SELECT_PAGE(0x40); 1615 XE_OUTB(XE_CMD0, XE_CMD0_OFFLINE); 1616 /*xe_reg_dump(scp);*/ 1617 xe_setaddrs(scp); 1618 /*xe_reg_dump(scp);*/ 1619 XE_SELECT_PAGE(0x40); 1620 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); 1621 } 1622 else { 1623 /* 1624 * No multicast operation (default) 1625 */ 1626 XE_SELECT_PAGE(0x42); 1627 XE_OUTB(XE_SWC1, 0); 1628 } 1629 XE_SELECT_PAGE(0); 1630 } 1631 1632 1633 /* 1634 * Set up all on-chip addresses (for multicast). AFAICS, there are 10 1635 * of these things; the first is our MAC address, the other 9 are mcast 1636 * addresses, padded with the MAC address if there aren't enough. 1637 * XXX - This doesn't work right, but I'm not sure why yet. We seem to be 1638 * XXX - doing much the same as the Linux code, which is weird enough that 1639 * XXX - it's probably right (despite my earlier comments to the contrary). 1640 */ 1641 static void 1642 xe_setaddrs(struct xe_softc *scp) { 1643 struct ifmultiaddr *maddr; 1644 u_int8_t *addr; 1645 u_int8_t page, slot, byte, i; 1646 1647 maddr = scp->arpcom.ac_if.if_multiaddrs.lh_first; 1648 1649 XE_SELECT_PAGE(page = 0x50); 1650 1651 for (slot = 0, byte = 8; slot < 10; slot++) { 1652 1653 if (slot == 0) 1654 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1655 else { 1656 while (maddr != NULL && maddr->ifma_addr->sa_family != AF_LINK) 1657 maddr = maddr->ifma_link.le_next; 1658 if (maddr != NULL) 1659 addr = LLADDR((struct sockaddr_dl *)maddr->ifma_addr); 1660 else 1661 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1662 } 1663 1664 for (i = 0; i < 6; i++, byte++) { 1665 #if XE_DEBUG > 2 1666 if (i) 1667 printf(":%x", addr[i]); 1668 else 1669 device_printf(scp->dev, "individual addresses %d: %x", slot, addr[0]); 1670 #endif 1671 1672 if (byte > 15) { 1673 page++; 1674 byte = 8; 1675 XE_SELECT_PAGE(page); 1676 } 1677 1678 if (scp->mohawk) 1679 XE_OUTB(byte, addr[5 - i]); 1680 else 1681 XE_OUTB(byte, addr[i]); 1682 } 1683 #if XE_DEBUG > 2 1684 printf("\n"); 1685 #endif 1686 } 1687 1688 XE_SELECT_PAGE(0); 1689 } 1690 1691 1692 /* 1693 * Write an outgoing packet to the card using programmed I/O. 1694 */ 1695 static int 1696 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) { 1697 struct mbuf *mbp2; 1698 u_int16_t len, pad, free, ok; 1699 u_int8_t *data; 1700 u_int8_t savebyte[2], wantbyte; 1701 1702 /* Get total packet length */ 1703 for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next); 1704 1705 /* Packets < minimum length may need to be padded out */ 1706 pad = 0; 1707 if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) { 1708 pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1; 1709 len = ETHER_MIN_LEN - ETHER_CRC_LEN; 1710 } 1711 1712 /* Check transmit buffer space */ 1713 XE_SELECT_PAGE(0); 1714 XE_OUTW(XE_TRS, len+2); 1715 free = XE_INW(XE_TSO); 1716 ok = free & 0x8000; 1717 free &= 0x7fff; 1718 if (free <= len + 2) 1719 return 1; 1720 1721 /* Send packet length to card */ 1722 XE_OUTW(XE_EDP, len); 1723 1724 /* 1725 * Write packet to card using PIO (code stolen from the ed driver) 1726 */ 1727 wantbyte = 0; 1728 while (mbp != NULL) { 1729 len = mbp->m_len; 1730 if (len > 0) { 1731 data = mtod(mbp, caddr_t); 1732 if (wantbyte) { /* Finish the last word */ 1733 savebyte[1] = *data; 1734 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1735 data++; 1736 len--; 1737 wantbyte = 0; 1738 } 1739 if (len > 1) { /* Output contiguous words */ 1740 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data, 1741 len >> 1); 1742 data += len & ~1; 1743 len &= 1; 1744 } 1745 if (len == 1) { /* Save last byte, if necessary */ 1746 savebyte[0] = *data; 1747 wantbyte = 1; 1748 } 1749 } 1750 mbp = mbp->m_next; 1751 } 1752 if (wantbyte) /* Last byte for odd-length packets */ 1753 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1754 1755 /* 1756 * For CE3 cards, just tell 'em to send -- apparently the card will pad out 1757 * short packets with random cruft. Otherwise, write nonsense words to fill 1758 * out the packet. I guess it is then sent automatically (?) 1759 */ 1760 if (scp->mohawk) 1761 XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR); 1762 else 1763 while (pad > 0) { 1764 XE_OUTW(XE_EDP, 0xdead); 1765 pad--; 1766 } 1767 1768 return 0; 1769 } 1770 1771 #if 0 1772 /* 1773 * Compute the 32-bit Ethernet CRC for the given buffer. 1774 */ 1775 static u_int32_t 1776 xe_compute_crc(u_int8_t *data, int len) { 1777 u_int32_t crc = 0xffffffff; 1778 u_int32_t poly = 0x04c11db6; 1779 u_int8_t current, crc31, bit; 1780 int i, k; 1781 1782 for (i = 0; i < len; i++) { 1783 current = data[i]; 1784 for (k = 1; k <= 8; k++) { 1785 if (crc & 0x80000000) { 1786 crc31 = 0x01; 1787 } 1788 else { 1789 crc31 = 0; 1790 } 1791 bit = crc31 ^ (current & 0x01); 1792 crc <<= 1; 1793 current >>= 1; 1794 if (bit) { 1795 crc = (crc ^ poly)|1; 1796 } 1797 } 1798 } 1799 return crc; 1800 } 1801 1802 1803 /* 1804 * Convert a CRC into an index into the multicast hash table. What we do is 1805 * take the most-significant 6 bits of the CRC, reverse them, and use that as 1806 * the bit number in the hash table. Bits 5:3 of the result give the byte 1807 * within the table (0-7); bits 2:0 give the bit number within that byte (also 1808 * 0-7), ie. the number of shifts needed to get it into the lsb position. 1809 */ 1810 static int 1811 xe_compute_hashbit(u_int32_t crc) { 1812 u_int8_t hashbit = 0; 1813 int i; 1814 1815 for (i = 0; i < 6; i++) { 1816 hashbit >>= 1; 1817 if (crc & 0x80000000) { 1818 hashbit &= 0x80; 1819 } 1820 crc <<= 1; 1821 } 1822 return (hashbit >> 2); 1823 } 1824 1825 #endif 1826 1827 1828 1829 /************************************************************** 1830 * * 1831 * M I I F U N C T I O N S * 1832 * * 1833 **************************************************************/ 1834 1835 /* 1836 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't 1837 * seem to work any better than the xirc2_ps stuff, but it's cleaner code. 1838 * XXX - this stuff shouldn't be here. It should all be abstracted off to 1839 * XXX - some kind of common MII-handling code, shared by all drivers. But 1840 * XXX - that's a whole other mission. 1841 */ 1842 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x)) 1843 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x)) 1844 1845 1846 /* 1847 * Sync the PHYs by setting data bit and strobing the clock 32 times. 1848 */ 1849 static void 1850 xe_mii_sync(struct xe_softc *scp) { 1851 int i; 1852 1853 XE_SELECT_PAGE(2); 1854 XE_MII_SET(XE_MII_DIR|XE_MII_WRD); 1855 1856 for (i = 0; i < 32; i++) { 1857 XE_MII_SET(XE_MII_CLK); 1858 DELAY(1); 1859 XE_MII_CLR(XE_MII_CLK); 1860 DELAY(1); 1861 } 1862 } 1863 1864 1865 /* 1866 * Look for a MII-compliant PHY. If we find one, reset it. 1867 */ 1868 static int 1869 xe_mii_init(struct xe_softc *scp) { 1870 u_int16_t status; 1871 1872 status = xe_phy_readreg(scp, PHY_BMSR); 1873 if ((status & 0xff00) != 0x7800) { 1874 #if XE_DEBUG > 1 1875 device_printf(scp->dev, "no PHY found, %0x\n", status); 1876 #endif 1877 return 0; 1878 } 1879 else { 1880 #if XE_DEBUG > 1 1881 device_printf(scp->dev, "PHY OK!\n"); 1882 #endif 1883 1884 /* Reset the PHY */ 1885 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET); 1886 DELAY(500); 1887 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET); 1888 XE_MII_DUMP(scp); 1889 return 1; 1890 } 1891 } 1892 1893 1894 /* 1895 * Clock a series of bits through the MII. 1896 */ 1897 static void 1898 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) { 1899 int i; 1900 1901 XE_SELECT_PAGE(2); 1902 XE_MII_CLR(XE_MII_CLK); 1903 1904 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 1905 if (bits & i) { 1906 XE_MII_SET(XE_MII_WRD); 1907 } else { 1908 XE_MII_CLR(XE_MII_WRD); 1909 } 1910 DELAY(1); 1911 XE_MII_CLR(XE_MII_CLK); 1912 DELAY(1); 1913 XE_MII_SET(XE_MII_CLK); 1914 } 1915 } 1916 1917 1918 /* 1919 * Read an PHY register through the MII. 1920 */ 1921 static int 1922 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) { 1923 int i, ack, s; 1924 1925 s = splimp(); 1926 1927 /* 1928 * Set up frame for RX. 1929 */ 1930 frame->mii_stdelim = XE_MII_STARTDELIM; 1931 frame->mii_opcode = XE_MII_READOP; 1932 frame->mii_turnaround = 0; 1933 frame->mii_data = 0; 1934 1935 XE_SELECT_PAGE(2); 1936 XE_OUTB(XE_GPR2, 0); 1937 1938 /* 1939 * Turn on data xmit. 1940 */ 1941 XE_MII_SET(XE_MII_DIR); 1942 1943 xe_mii_sync(scp); 1944 1945 /* 1946 * Send command/address info. 1947 */ 1948 xe_mii_send(scp, frame->mii_stdelim, 2); 1949 xe_mii_send(scp, frame->mii_opcode, 2); 1950 xe_mii_send(scp, frame->mii_phyaddr, 5); 1951 xe_mii_send(scp, frame->mii_regaddr, 5); 1952 1953 /* Idle bit */ 1954 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD)); 1955 DELAY(1); 1956 XE_MII_SET(XE_MII_CLK); 1957 DELAY(1); 1958 1959 /* Turn off xmit. */ 1960 XE_MII_CLR(XE_MII_DIR); 1961 1962 /* Check for ack */ 1963 XE_MII_CLR(XE_MII_CLK); 1964 DELAY(1); 1965 ack = XE_INB(XE_GPR2) & XE_MII_RDD; 1966 XE_MII_SET(XE_MII_CLK); 1967 DELAY(1); 1968 1969 /* 1970 * Now try reading data bits. If the ack failed, we still 1971 * need to clock through 16 cycles to keep the PHY(s) in sync. 1972 */ 1973 if (ack) { 1974 for(i = 0; i < 16; i++) { 1975 XE_MII_CLR(XE_MII_CLK); 1976 DELAY(1); 1977 XE_MII_SET(XE_MII_CLK); 1978 DELAY(1); 1979 } 1980 goto fail; 1981 } 1982 1983 for (i = 0x8000; i; i >>= 1) { 1984 XE_MII_CLR(XE_MII_CLK); 1985 DELAY(1); 1986 if (!ack) { 1987 if (XE_INB(XE_GPR2) & XE_MII_RDD) 1988 frame->mii_data |= i; 1989 DELAY(1); 1990 } 1991 XE_MII_SET(XE_MII_CLK); 1992 DELAY(1); 1993 } 1994 1995 fail: 1996 1997 XE_MII_CLR(XE_MII_CLK); 1998 DELAY(1); 1999 XE_MII_SET(XE_MII_CLK); 2000 DELAY(1); 2001 2002 splx(s); 2003 2004 if (ack) 2005 return(1); 2006 return(0); 2007 } 2008 2009 2010 /* 2011 * Write to a PHY register through the MII. 2012 */ 2013 static int 2014 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) { 2015 int s; 2016 2017 s = splimp(); 2018 2019 /* 2020 * Set up frame for TX. 2021 */ 2022 frame->mii_stdelim = XE_MII_STARTDELIM; 2023 frame->mii_opcode = XE_MII_WRITEOP; 2024 frame->mii_turnaround = XE_MII_TURNAROUND; 2025 2026 XE_SELECT_PAGE(2); 2027 2028 /* 2029 * Turn on data output. 2030 */ 2031 XE_MII_SET(XE_MII_DIR); 2032 2033 xe_mii_sync(scp); 2034 2035 xe_mii_send(scp, frame->mii_stdelim, 2); 2036 xe_mii_send(scp, frame->mii_opcode, 2); 2037 xe_mii_send(scp, frame->mii_phyaddr, 5); 2038 xe_mii_send(scp, frame->mii_regaddr, 5); 2039 xe_mii_send(scp, frame->mii_turnaround, 2); 2040 xe_mii_send(scp, frame->mii_data, 16); 2041 2042 /* Idle bit. */ 2043 XE_MII_SET(XE_MII_CLK); 2044 DELAY(1); 2045 XE_MII_CLR(XE_MII_CLK); 2046 DELAY(1); 2047 2048 /* 2049 * Turn off xmit. 2050 */ 2051 XE_MII_CLR(XE_MII_DIR); 2052 2053 splx(s); 2054 2055 return(0); 2056 } 2057 2058 2059 /* 2060 * Read a register from the PHY. 2061 */ 2062 static u_int16_t 2063 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) { 2064 struct xe_mii_frame frame; 2065 2066 bzero((char *)&frame, sizeof(frame)); 2067 2068 frame.mii_phyaddr = 0; 2069 frame.mii_regaddr = reg; 2070 xe_mii_readreg(scp, &frame); 2071 2072 return(frame.mii_data); 2073 } 2074 2075 2076 /* 2077 * Write to a PHY register. 2078 */ 2079 static void 2080 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) { 2081 struct xe_mii_frame frame; 2082 2083 bzero((char *)&frame, sizeof(frame)); 2084 2085 frame.mii_phyaddr = 0; 2086 frame.mii_regaddr = reg; 2087 frame.mii_data = data; 2088 xe_mii_writereg(scp, &frame); 2089 2090 return; 2091 } 2092 2093 2094 #ifdef XE_DEBUG 2095 /* 2096 * A bit of debugging code. 2097 */ 2098 static void 2099 xe_mii_dump(struct xe_softc *scp) { 2100 int i, s; 2101 2102 s = splimp(); 2103 2104 device_printf(scp->dev, "MII registers: "); 2105 for (i = 0; i < 2; i++) { 2106 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 2107 } 2108 for (i = 4; i < 7; i++) { 2109 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 2110 } 2111 printf("\n"); 2112 2113 (void)splx(s); 2114 } 2115 2116 static void 2117 xe_reg_dump(struct xe_softc *scp) { 2118 int page, i, s; 2119 2120 s = splimp(); 2121 2122 device_printf(scp->dev, "Common registers: "); 2123 for (i = 0; i < 8; i++) { 2124 printf(" %2.2x", XE_INB(i)); 2125 } 2126 printf("\n"); 2127 2128 for (page = 0; page <= 8; page++) { 2129 device_printf(scp->dev, "Register page %2.2x: ", page); 2130 XE_SELECT_PAGE(page); 2131 for (i = 8; i < 16; i++) { 2132 printf(" %2.2x", XE_INB(i)); 2133 } 2134 printf("\n"); 2135 } 2136 2137 for (page = 0x10; page < 0x5f; page++) { 2138 if ((page >= 0x11 && page <= 0x3f) || 2139 (page == 0x41) || 2140 (page >= 0x43 && page <= 0x4f) || 2141 (page >= 0x59)) 2142 continue; 2143 device_printf(scp->dev, "Register page %2.2x: ", page); 2144 XE_SELECT_PAGE(page); 2145 for (i = 8; i < 16; i++) { 2146 printf(" %2.2x", XE_INB(i)); 2147 } 2148 printf("\n"); 2149 } 2150 2151 (void)splx(s); 2152 } 2153 #endif 2154 2155 int 2156 xe_activate(device_t dev) 2157 { 2158 struct xe_softc *sc = device_get_softc(dev); 2159 int start, err; 2160 2161 if (!sc->dingo) { 2162 sc->port_rid = 0; /* 0 is managed by pccard */ 2163 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, 2164 &sc->port_rid, 0, ~0, 16, RF_ACTIVE); 2165 } else { 2166 /* 2167 * Find a 16 byte aligned ioport for the card. 2168 */ 2169 #if XE_DEBUG > 0 2170 device_printf(dev, "Finding an aligned port for RealPort\n"); 2171 #endif /* XE_DEBUG */ 2172 sc->port_rid = 1; /* 0 is managed by pccard */ 2173 start = 0x100; 2174 do { 2175 sc->port_res = bus_alloc_resource(dev, 2176 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16, 2177 RF_ACTIVE); 2178 if (sc->port_res == 0) 2179 break; /* we failed */ 2180 if ((rman_get_start(sc->port_res) & 0xf) == 0) 2181 break; /* good */ 2182 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2183 sc->port_res); 2184 start = (rman_get_start(sc->port_res) + 15) & ~0xf; 2185 } while (1); 2186 #if XE_DEBUG > 2 2187 device_printf(dev, "port 0x%0lx, size 0x%0lx\n", 2188 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 2189 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); 2190 #endif /* XE_DEBUG */ 2191 } 2192 if (!sc->port_res) { 2193 #if XE_DEBUG > 0 2194 device_printf(dev, "Cannot allocate ioport\n"); 2195 #endif 2196 return ENOMEM; 2197 } 2198 2199 sc->irq_rid = 0; 2200 sc->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid, 2201 0, ~0, 1, RF_ACTIVE); 2202 if (!sc->irq_res) { 2203 #if XE_DEBUG > 0 2204 device_printf(dev, "Cannot allocate irq\n"); 2205 #endif 2206 xe_deactivate(dev); 2207 return ENOMEM; 2208 } 2209 if ((err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, xe_intr, sc, 2210 &sc->intrhand)) != 0) { 2211 xe_deactivate(dev); 2212 return err; 2213 } 2214 2215 sc->bst = rman_get_bustag(sc->port_res); 2216 sc->bsh = rman_get_bushandle(sc->port_res); 2217 return (0); 2218 } 2219 2220 void 2221 xe_deactivate(device_t dev) 2222 { 2223 struct xe_softc *sc = device_get_softc(dev); 2224 2225 if (sc->intrhand) 2226 bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 2227 sc->intrhand = 0; 2228 if (sc->port_res) 2229 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2230 sc->port_res); 2231 sc->port_res = 0; 2232 if (sc->irq_res) 2233 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, 2234 sc->irq_res); 2235 sc->irq_res = 0; 2236 return; 2237 } 2238 2239 static device_method_t xe_pccard_methods[] = { 2240 /* Device interface */ 2241 DEVMETHOD(device_probe, xe_probe), 2242 DEVMETHOD(device_attach, xe_attach), 2243 DEVMETHOD(device_detach, xe_detach), 2244 2245 { 0, 0 } 2246 }; 2247 2248 static driver_t xe_pccard_driver = { 2249 "xe", 2250 xe_pccard_methods, 2251 sizeof(struct xe_softc), 2252 }; 2253 2254 devclass_t xe_devclass; 2255 2256 DECLARE_DUMMY_MODULE(if_xe); 2257 DRIVER_MODULE(if_xe, pccard, xe_pccard_driver, xe_devclass, 0, 0); 2258 2259