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 1.7 2004/01/06 03:17:24 dillon 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); 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 offs = 0; 325 do { 326 u_int16_t vendor; 327 u_int8_t rev, media, prod; 328 329 switch (CISTPL_TYPE(buf)) { 330 331 case 0x15: /* Grab version string (needed to ID some weird CE2's) */ 332 #if XE_DEBUG > 1 333 device_printf(dev, "Got version string (0x15)\n"); 334 #endif 335 for (i = 0; i < CISTPL_LEN(buf); ver_str[i] = CISTPL_DATA(buf, i++)); 336 ver_str[i] = '\0'; 337 ver_str[(CISTPL_BUFSIZE>>1) - 1] = CISTPL_LEN(buf); 338 success++; 339 break; 340 341 case 0x20: /* Figure out what type of card we have */ 342 #if XE_DEBUG > 1 343 device_printf(dev, "Got card ID (0x20)\n"); 344 #endif 345 vendor = CISTPL_DATA(buf, 0) + (CISTPL_DATA(buf, 1) << 8); 346 rev = CISTPL_DATA(buf, 2); 347 media = CISTPL_DATA(buf, 3); 348 prod = CISTPL_DATA(buf, 4); 349 350 switch (vendor) { /* Get vendor ID */ 351 case 0x0105: 352 scp->vendor = "Xircom"; break; 353 case 0x0138: 354 case 0x0183: 355 scp->vendor = "Compaq"; break; 356 case 0x0089: 357 scp->vendor = "Intel"; break; 358 default: 359 scp->vendor = "Unknown"; 360 } 361 362 if (!((prod & 0x40) && (media & 0x01))) { 363 #if XE_DEBUG > 1 364 device_printf(dev, "Not a PCMCIA Ethernet card!\n"); 365 #endif 366 rc = ENODEV; /* Not a PCMCIA Ethernet device */ 367 } else { 368 if (media & 0x10) { /* Ethernet/modem cards */ 369 #if XE_DEBUG > 1 370 device_printf(dev, "Card is Ethernet/modem combo\n"); 371 #endif 372 scp->modem = 1; 373 switch (prod & 0x0f) { 374 case 1: 375 scp->card_type = "CEM"; break; 376 case 2: 377 scp->ce2 = 1; 378 scp->card_type = "CEM2"; break; 379 case 3: 380 scp->ce2 = 1; 381 scp->card_type = "CEM3"; break; 382 case 4: 383 scp->ce2 = 1; 384 scp->card_type = "CEM33"; break; 385 case 5: 386 scp->mohawk = 1; 387 scp->card_type = "CEM56M"; break; 388 case 6: 389 case 7: /* Some kind of RealPort card */ 390 scp->mohawk = 1; 391 scp->dingo = 1; 392 scp->card_type = "CEM56"; break; 393 default: 394 rc = ENODEV; 395 } 396 } else { /* Ethernet-only cards */ 397 #if XE_DEBUG > 1 398 device_printf(dev, "Card is Ethernet only\n"); 399 #endif 400 switch (prod & 0x0f) { 401 case 1: 402 scp->card_type = "CE"; break; 403 case 2: 404 scp->ce2 = 1; 405 scp->card_type = "CE2"; break; 406 case 3: 407 scp->mohawk = 1; 408 scp->card_type = "CE3"; break; 409 default: 410 rc = ENODEV; 411 } 412 } 413 } 414 success++; 415 break; 416 417 case 0x22: /* Get MAC address */ 418 if ((CISTPL_LEN(buf) == 8) && 419 (CISTPL_DATA(buf, 0) == 0x04) && 420 (CISTPL_DATA(buf, 1) == ETHER_ADDR_LEN)) { 421 #if XE_DEBUG > 1 422 device_printf(dev, "Got MAC address (0x22)\n"); 423 #endif 424 for (i = 0; i < ETHER_ADDR_LEN; i++) 425 scp->arpcom.ac_enaddr[i] = CISTPL_DATA(buf, i+2); 426 } 427 success++; 428 break; 429 default: 430 break; 431 } 432 433 if (CISTPL_TYPE(buf) == 0xff) 434 break; 435 /* Skip to next tuple */ 436 buf += ((CISTPL_LEN(buf) + 2) << 1); 437 438 } while (1); 439 440 /* unmap the cis */ 441 bus_release_resource(dev, SYS_RES_MEMORY, rid, r); 442 443 /* Die now if something went wrong above */ 444 if (success < 3) 445 return ENXIO; 446 447 /* Check for certain strange CE2's that look like CE's */ 448 if (strcmp(scp->card_type, "CE") == 0) { 449 u_char *str = ver_str; 450 #if XE_DEBUG > 1 451 device_printf(dev, "Checking for weird CE2 string\n"); 452 #endif 453 str += strlen(str) + 1; /* Skip forward to 3rd version string */ 454 str += strlen(str) + 1; 455 str += strlen(str) + 1; 456 for (i = 0; i < strlen(str) - 2; i++) { 457 if (bcmp(&str[i], "CE2", 3) ==0) { /* Look for "CE2" string */ 458 scp->card_type = "CE2"; 459 } 460 } 461 } 462 463 /* Reject unsupported cards */ 464 if (strcmp(scp->card_type, "CE") == 0 || strcmp(scp->card_type, "CEM") == 0) { 465 device_printf(dev, "Sorry, your %s card is not supported :(\n", 466 scp->card_type); 467 return ENODEV; 468 } 469 470 /* Success */ 471 return 0; 472 } 473 474 /* 475 * The device entry is being removed, probably because someone ejected the 476 * card. The interface should have been brought down manually before calling 477 * this function; if not you may well lose packets. In any case, I shut down 478 * the card and the interface, and hope for the best. 479 */ 480 static int 481 xe_detach(device_t dev) { 482 struct xe_softc *sc = device_get_softc(dev); 483 484 sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING; 485 ether_ifdetach(&sc->arpcom.ac_if, ETHER_BPF_SUPPORTED); 486 xe_deactivate(dev); 487 return 0; 488 } 489 490 /* 491 * Attach a device. 492 */ 493 static int 494 xe_attach (device_t dev) { 495 struct xe_softc *scp = device_get_softc(dev); 496 int err; 497 498 #ifdef XE_DEBUG 499 device_printf(dev, "attach\n"); 500 #endif 501 502 if ((err = xe_activate(dev)) != 0) 503 return (err); 504 505 /* Fill in some private data */ 506 scp->ifp = &scp->arpcom.ac_if; 507 scp->ifm = &scp->ifmedia; 508 scp->autoneg_status = 0; 509 510 /* Hack RealPorts into submission */ 511 if (scp->dingo && xe_cem56fix(dev) < 0) { 512 device_printf(dev, "Unable to fix your RealPort\n"); 513 xe_deactivate(dev); 514 return ENODEV; 515 } 516 517 /* Hopefully safe to read this here */ 518 XE_SELECT_PAGE(4); 519 scp->version = XE_INB(XE_BOV); 520 521 scp->dev = dev; 522 /* Initialise the ifnet structure */ 523 scp->ifp->if_softc = scp; 524 if_initname(scp->ifp, "xe", device_get_unit(dev)); 525 scp->ifp->if_timer = 0; 526 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 527 scp->ifp->if_linkmib = &scp->mibdata; 528 scp->ifp->if_linkmiblen = sizeof scp->mibdata; 529 scp->ifp->if_output = ether_output; 530 scp->ifp->if_start = xe_start; 531 scp->ifp->if_ioctl = xe_ioctl; 532 scp->ifp->if_watchdog = xe_watchdog; 533 scp->ifp->if_init = xe_init; 534 scp->ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 535 536 /* Initialise the ifmedia structure */ 537 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status); 538 callout_handle_init(&scp->chand); 539 540 /* 541 * Fill in supported media types. Some cards _do_ support full duplex 542 * operation, but this driver doesn't, yet. Therefore we leave those modes 543 * out of the list. We support some form of autoselection in all cases. 544 */ 545 if (scp->mohawk) { 546 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL); 547 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 548 } 549 else { 550 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 551 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL); 552 } 553 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL); 554 555 /* Default is to autoselect best supported media type */ 556 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO); 557 558 /* Print some useful information */ 559 device_printf(dev, "%s %s, bonding version %#x%s%s\n", 560 scp->vendor, 561 scp->card_type, 562 scp->version, 563 scp->mohawk ? ", 100Mbps capable" : "", 564 scp->modem ? ", with modem" : ""); 565 if (scp->mohawk) { 566 XE_SELECT_PAGE(0x10); 567 device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n", 568 XE_INW(XE_DINGOID), 569 XE_INW(XE_RevID), 570 XE_INW(XE_VendorID)); 571 } 572 if (scp->ce2) { 573 XE_SELECT_PAGE(0x45); 574 device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV)); 575 } 576 577 /* Print MAC address */ 578 device_printf(dev, "Ethernet address %6D\n", scp->arpcom.ac_enaddr, ":"); 579 580 /* Attach the interface */ 581 ether_ifattach(scp->ifp, ETHER_BPF_SUPPORTED); 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) { 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, M_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, M_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 - ETHER_HDR_LEN; 1022 mbp->m_data += ETHER_HDR_LEN; /* Strip off Ethernet header */ 1023 ether_input(ifp, ehp, mbp); /* Send the packet on its way */ 1024 ifp->if_ipackets++; /* Success! */ 1025 } 1026 XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */ 1027 } 1028 } 1029 else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */ 1030 scp->mibdata.dot3StatsFrameTooLongs++; 1031 ifp->if_ierrors++; 1032 } 1033 else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */ 1034 scp->mibdata.dot3StatsFCSErrors++; 1035 ifp->if_ierrors++; 1036 } 1037 else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */ 1038 scp->mibdata.dot3StatsAlignmentErrors++; 1039 ifp->if_ierrors++; 1040 } 1041 } 1042 if (rxs & 0x10) { /* Receiver overrun */ 1043 scp->mibdata.dot3StatsInternalMacReceiveErrors++; 1044 ifp->if_ierrors++; 1045 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN); 1046 } 1047 } 1048 1049 XE_SELECT_PAGE(psr); /* Restore saved page */ 1050 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */ 1051 1052 /* Could force an int here, instead of dropping packets? */ 1053 /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */ 1054 1055 return; 1056 } 1057 1058 1059 /* 1060 * Device timeout/watchdog routine. Called automatically if we queue a packet 1061 * for transmission but don't get an interrupt within a specified timeout 1062 * (usually 5 seconds). When this happens we assume the worst and reset the 1063 * card. 1064 */ 1065 static void 1066 xe_watchdog(struct ifnet *ifp) { 1067 struct xe_softc *scp = ifp->if_softc; 1068 1069 device_printf(scp->dev, "watchdog timeout; resetting card\n"); 1070 scp->tx_timeouts++; 1071 ifp->if_oerrors += scp->tx_queued; 1072 xe_stop(scp); 1073 xe_hard_reset(scp); 1074 xe_setmedia(scp); 1075 xe_init(scp); 1076 } 1077 1078 1079 /* 1080 * Change media selection. 1081 */ 1082 static int 1083 xe_media_change(struct ifnet *ifp) { 1084 struct xe_softc *scp = ifp->if_softc; 1085 1086 #ifdef XE_DEBUG 1087 printf("%s: media_change\n", ifp->if_xname); 1088 #endif 1089 1090 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER) 1091 return(EINVAL); 1092 1093 /* 1094 * Some card/media combos aren't always possible -- filter those out here. 1095 */ 1096 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO || 1097 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok) 1098 return (EINVAL); 1099 1100 xe_setmedia(scp); 1101 1102 return 0; 1103 } 1104 1105 1106 /* 1107 * Return current media selection. 1108 */ 1109 static void 1110 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) { 1111 1112 #ifdef XE_DEBUG 1113 printf("%s: media_status\n", ifp->if_xname); 1114 #endif 1115 1116 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media; 1117 1118 return; 1119 } 1120 1121 1122 /* 1123 * Select active media. 1124 */ 1125 static void xe_setmedia(void *xscp) { 1126 struct xe_softc *scp = xscp; 1127 u_int16_t bmcr, bmsr, anar, lpar; 1128 1129 #ifdef XE_DEBUG 1130 device_printf(scp->dev, "setmedia\n"); 1131 #endif 1132 1133 /* Cancel any pending timeout */ 1134 untimeout(xe_setmedia, scp, scp->chand); 1135 xe_disable_intr(scp); 1136 1137 /* Select media */ 1138 scp->media = IFM_ETHER; 1139 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) { 1140 1141 case IFM_AUTO: /* Autoselect media */ 1142 scp->media = IFM_ETHER|IFM_AUTO; 1143 1144 /* 1145 * Autoselection is really awful. It goes something like this: 1146 * 1147 * Wait until the transmitter goes idle (2sec timeout). 1148 * Reset card 1149 * IF a 100Mbit PHY exists 1150 * Start NWAY autonegotiation (3.5sec timeout) 1151 * IF that succeeds 1152 * Select 100baseTX or 10baseT, whichever was detected 1153 * ELSE 1154 * Reset card 1155 * IF a 100Mbit PHY exists 1156 * Try to force a 100baseTX link (3sec timeout) 1157 * IF that succeeds 1158 * Select 100baseTX 1159 * ELSE 1160 * Disable the PHY 1161 * ENDIF 1162 * ENDIF 1163 * ENDIF 1164 * ENDIF 1165 * IF nothing selected so far 1166 * IF a 100Mbit PHY exists 1167 * Select 10baseT 1168 * ELSE 1169 * Select 10baseT or 10base2, whichever is connected 1170 * ENDIF 1171 * ENDIF 1172 */ 1173 switch (scp->autoneg_status) { 1174 1175 case XE_AUTONEG_NONE: 1176 #if XE_DEBUG > 1 1177 device_printf(scp->dev, "Waiting for idle transmitter\n"); 1178 #endif 1179 scp->arpcom.ac_if.if_flags |= IFF_OACTIVE; 1180 scp->autoneg_status = XE_AUTONEG_WAITING; 1181 scp->chand = timeout(xe_setmedia, scp, hz * 2); 1182 return; 1183 1184 case XE_AUTONEG_WAITING: 1185 xe_soft_reset(scp); 1186 if (scp->phy_ok) { 1187 #if XE_DEBUG > 1 1188 device_printf(scp->dev, "Starting autonegotiation\n"); 1189 #endif 1190 bmcr = xe_phy_readreg(scp, PHY_BMCR); 1191 bmcr &= ~(PHY_BMCR_AUTONEGENBL); 1192 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1193 anar = xe_phy_readreg(scp, PHY_ANAR); 1194 anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL); 1195 anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF; 1196 xe_phy_writereg(scp, PHY_ANAR, anar); 1197 bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; 1198 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1199 scp->autoneg_status = XE_AUTONEG_STARTED; 1200 scp->chand = timeout(xe_setmedia, scp, hz * 7/2); 1201 return; 1202 } 1203 else { 1204 scp->autoneg_status = XE_AUTONEG_FAIL; 1205 } 1206 break; 1207 1208 case XE_AUTONEG_STARTED: 1209 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1210 lpar = xe_phy_readreg(scp, PHY_LPAR); 1211 if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) { 1212 #if XE_DEBUG > 1 1213 device_printf(scp->dev, "Autonegotiation complete!\n"); 1214 #endif 1215 /* 1216 * XXX - Shouldn't have to do this, but (on my hub at least) the 1217 * XXX - transmitter won't work after a successful autoneg. So we see 1218 * XXX - what the negotiation result was and force that mode. I'm 1219 * XXX - sure there is an easy fix for this. 1220 */ 1221 if (lpar & PHY_LPAR_100BTXHALF) { 1222 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1223 XE_MII_DUMP(scp); 1224 XE_SELECT_PAGE(2); 1225 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1226 scp->media = IFM_ETHER|IFM_100_TX; 1227 scp->autoneg_status = XE_AUTONEG_NONE; 1228 } 1229 else { 1230 /* 1231 * XXX - Bit of a hack going on in here. 1232 * XXX - This is derived from Ken Hughes patch to the Linux driver 1233 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B 1234 * XXX - cards. What's a CE3B and how's it differ from a plain CE3? 1235 * XXX - these are the things we need to find out. 1236 */ 1237 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1238 XE_SELECT_PAGE(2); 1239 /* BEGIN HACK */ 1240 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1241 XE_SELECT_PAGE(0x42); 1242 XE_OUTB(XE_SWC1, 0x80); 1243 scp->media = IFM_ETHER|IFM_10_T; 1244 scp->autoneg_status = XE_AUTONEG_NONE; 1245 /* END HACK */ 1246 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */ 1247 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/ 1248 } 1249 } 1250 else { 1251 #if XE_DEBUG > 1 1252 device_printf(scp->dev, "Autonegotiation failed; trying 100baseTX\n"); 1253 #endif 1254 XE_MII_DUMP(scp); 1255 xe_soft_reset(scp); 1256 if (scp->phy_ok) { 1257 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1258 scp->autoneg_status = XE_AUTONEG_100TX; 1259 scp->chand = timeout(xe_setmedia, scp, hz * 3); 1260 return; 1261 } 1262 else { 1263 scp->autoneg_status = XE_AUTONEG_FAIL; 1264 } 1265 } 1266 break; 1267 1268 case XE_AUTONEG_100TX: 1269 (void)xe_phy_readreg(scp, PHY_BMSR); 1270 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1271 if (bmsr & PHY_BMSR_LINKSTAT) { 1272 #if XE_DEBUG > 1 1273 device_printf(scp->dev, "Got 100baseTX link!\n"); 1274 #endif 1275 XE_MII_DUMP(scp); 1276 XE_SELECT_PAGE(2); 1277 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1278 scp->media = IFM_ETHER|IFM_100_TX; 1279 scp->autoneg_status = XE_AUTONEG_NONE; 1280 } 1281 else { 1282 #if XE_DEBUG > 1 1283 device_printf(scp->dev, "Autonegotiation failed; disabling PHY\n"); 1284 #endif 1285 XE_MII_DUMP(scp); 1286 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1287 XE_SELECT_PAGE(2); 1288 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */ 1289 scp->autoneg_status = XE_AUTONEG_FAIL; 1290 } 1291 break; 1292 } 1293 1294 /* 1295 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then 1296 * either autonegotiation failed, or never got started to begin with. In 1297 * either case, select a suitable 10Mbit media and hope it works. We 1298 * don't need to reset the card again, since it will have been done 1299 * already by the big switch above. 1300 */ 1301 if (scp->autoneg_status == XE_AUTONEG_FAIL) { 1302 #if XE_DEBUG > 1 1303 device_printf(scp->dev, "Selecting 10baseX\n"); 1304 #endif 1305 if (scp->mohawk) { 1306 XE_SELECT_PAGE(0x42); 1307 XE_OUTB(XE_SWC1, 0x80); 1308 scp->media = IFM_ETHER|IFM_10_T; 1309 scp->autoneg_status = XE_AUTONEG_NONE; 1310 } 1311 else { 1312 XE_SELECT_PAGE(4); 1313 XE_OUTB(XE_GPR0, 4); 1314 DELAY(50000); 1315 XE_SELECT_PAGE(0x42); 1316 XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0); 1317 scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2); 1318 scp->autoneg_status = XE_AUTONEG_NONE; 1319 } 1320 } 1321 break; 1322 1323 1324 /* 1325 * If a specific media has been requested, we just reset the card and 1326 * select it (one small exception -- if 100baseTX is requested by there is 1327 * no PHY, we fall back to 10baseT operation). 1328 */ 1329 case IFM_100_TX: /* Force 100baseTX */ 1330 xe_soft_reset(scp); 1331 if (scp->phy_ok) { 1332 #if XE_DEBUG > 1 1333 device_printf(scp->dev, "Selecting 100baseTX\n"); 1334 #endif 1335 XE_SELECT_PAGE(0x42); 1336 XE_OUTB(XE_SWC1, 0); 1337 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1338 XE_SELECT_PAGE(2); 1339 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1340 scp->media |= IFM_100_TX; 1341 break; 1342 } 1343 /* FALLTHROUGH */ 1344 1345 case IFM_10_T: /* Force 10baseT */ 1346 xe_soft_reset(scp); 1347 #if XE_DEBUG > 1 1348 device_printf(scp->dev, "Selecting 10baseT\n"); 1349 #endif 1350 if (scp->phy_ok) { 1351 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1352 XE_SELECT_PAGE(2); 1353 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */ 1354 } 1355 XE_SELECT_PAGE(0x42); 1356 XE_OUTB(XE_SWC1, 0x80); 1357 scp->media |= IFM_10_T; 1358 break; 1359 1360 case IFM_10_2: 1361 xe_soft_reset(scp); 1362 #if XE_DEBUG > 1 1363 device_printf(scp->dev, "Selecting 10base2\n"); 1364 #endif 1365 XE_SELECT_PAGE(0x42); 1366 XE_OUTB(XE_SWC1, 0xc0); 1367 scp->media |= IFM_10_2; 1368 break; 1369 } 1370 1371 1372 /* 1373 * Finally, the LEDs are set to match whatever media was chosen and the 1374 * transmitter is unblocked. 1375 */ 1376 #if XE_DEBUG > 1 1377 device_printf(scp->dev, "Setting LEDs\n"); 1378 #endif 1379 XE_SELECT_PAGE(2); 1380 switch (IFM_SUBTYPE(scp->media)) { 1381 case IFM_100_TX: 1382 case IFM_10_T: 1383 XE_OUTB(XE_LED, 0x3b); 1384 if (scp->dingo) 1385 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */ 1386 break; 1387 1388 case IFM_10_2: 1389 XE_OUTB(XE_LED, 0x3a); 1390 break; 1391 } 1392 1393 /* Restart output? */ 1394 scp->ifp->if_flags &= ~IFF_OACTIVE; 1395 xe_init(scp); 1396 } 1397 1398 1399 /* 1400 * Hard reset (power cycle) the card. 1401 */ 1402 static void 1403 xe_hard_reset(struct xe_softc *scp) { 1404 int s; 1405 1406 #ifdef XE_DEBUG 1407 device_printf(scp->dev, "hard_reset\n"); 1408 #endif 1409 1410 s = splimp(); 1411 1412 /* 1413 * Power cycle the card. 1414 */ 1415 XE_SELECT_PAGE(4); 1416 XE_OUTB(XE_GPR1, 0); /* Power off */ 1417 DELAY(40000); 1418 1419 if (scp->mohawk) 1420 XE_OUTB(XE_GPR1, 1); /* And back on again */ 1421 else 1422 XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */ 1423 DELAY(40000); 1424 XE_SELECT_PAGE(0); 1425 1426 (void)splx(s); 1427 } 1428 1429 1430 /* 1431 * Soft reset the card. Also makes sure that the ML6692 and 10Mbit controller 1432 * are powered up, sets the silicon revision number in softc, disables 1433 * interrupts and checks for the prescence of a 100Mbit PHY. This should 1434 * leave us in a position where we can access the PHY and do media 1435 * selection. The function imposes a 0.5s delay while the hardware powers up. 1436 */ 1437 static void 1438 xe_soft_reset(struct xe_softc *scp) { 1439 int s; 1440 1441 #ifdef XE_DEBUG 1442 device_printf(scp->dev, "soft_reset\n"); 1443 #endif 1444 1445 s = splimp(); 1446 1447 /* 1448 * Reset the card, (again). 1449 */ 1450 XE_SELECT_PAGE(0); 1451 XE_OUTB(XE_CR, XE_CR_SOFT_RESET); 1452 DELAY(40000); 1453 XE_OUTB(XE_CR, 0); 1454 DELAY(40000); 1455 1456 if (scp->mohawk) { 1457 /* 1458 * set GP1 and GP2 as outputs (bits 2 & 3) 1459 * set GP1 low to power on the ML6692 (bit 0) 1460 * set GP2 high to power on the 10Mhz chip (bit 1) 1461 */ 1462 XE_SELECT_PAGE(4); 1463 XE_OUTB(XE_GPR0, 0x0e); 1464 } 1465 1466 /* 1467 * Wait for everything to wake up. 1468 */ 1469 DELAY(500000); 1470 1471 /* 1472 * Get silicon revision number. 1473 */ 1474 XE_SELECT_PAGE(4); 1475 if (scp->mohawk) 1476 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4; 1477 else 1478 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4; 1479 #ifdef XE_DEBUG 1480 device_printf(scp->dev, "silicon revision = %d\n", scp->srev); 1481 #endif 1482 1483 /* 1484 * Shut off interrupts. 1485 */ 1486 xe_disable_intr(scp); 1487 1488 /* 1489 * Check for PHY. 1490 */ 1491 if (scp->mohawk) { 1492 scp->phy_ok = xe_mii_init(scp); 1493 } 1494 1495 XE_SELECT_PAGE(0); 1496 1497 (void)splx(s); 1498 } 1499 1500 1501 /* 1502 * Take interface offline. This is done by powering down the device, which I 1503 * assume means just shutting down the transceiver and Ethernet logic. This 1504 * requires a _hard_ reset to recover from, as we need to power up again. 1505 */ 1506 static void 1507 xe_stop(struct xe_softc *scp) { 1508 int s; 1509 1510 #ifdef XE_DEBUG 1511 device_printf(scp->dev, "stop\n"); 1512 #endif 1513 1514 s = splimp(); 1515 1516 /* 1517 * Shut off interrupts. 1518 */ 1519 xe_disable_intr(scp); 1520 1521 /* 1522 * Power down. 1523 */ 1524 XE_SELECT_PAGE(4); 1525 XE_OUTB(XE_GPR1, 0); 1526 XE_SELECT_PAGE(0); 1527 1528 /* 1529 * ~IFF_RUNNING == interface down. 1530 */ 1531 scp->ifp->if_flags &= ~IFF_RUNNING; 1532 scp->ifp->if_flags &= ~IFF_OACTIVE; 1533 scp->ifp->if_timer = 0; 1534 1535 (void)splx(s); 1536 } 1537 1538 1539 /* 1540 * Enable Ethernet interrupts from the card. 1541 */ 1542 static void 1543 xe_enable_intr(struct xe_softc *scp) { 1544 #ifdef XE_DEBUG 1545 device_printf(scp->dev, "enable_intr\n"); 1546 #endif 1547 1548 XE_SELECT_PAGE(1); 1549 XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */ 1550 XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */ 1551 DELAY(1); 1552 1553 XE_SELECT_PAGE(0); 1554 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */ 1555 if (scp->modem && !scp->dingo) { /* This bit is just magic */ 1556 if (!(XE_INB(0x10) & 0x01)) { 1557 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */ 1558 } 1559 } 1560 } 1561 1562 1563 /* 1564 * Disable all Ethernet interrupts from the card. 1565 */ 1566 static void 1567 xe_disable_intr(struct xe_softc *scp) { 1568 #ifdef XE_DEBUG 1569 device_printf(scp->dev, "disable_intr\n"); 1570 #endif 1571 1572 XE_SELECT_PAGE(0); 1573 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 1574 if (scp->modem && !scp->dingo) { /* More magic (does this work?) */ 1575 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */ 1576 } 1577 1578 XE_SELECT_PAGE(1); 1579 XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */ 1580 XE_OUTB(XE_IMR1, 0); 1581 XE_SELECT_PAGE(0); 1582 } 1583 1584 1585 /* 1586 * Set up multicast filter and promiscuous mode 1587 */ 1588 static void 1589 xe_setmulti(struct xe_softc *scp) { 1590 struct ifnet *ifp; 1591 struct ifmultiaddr *maddr; 1592 int count; 1593 1594 ifp = &scp->arpcom.ac_if; 1595 maddr = ifp->if_multiaddrs.lh_first; 1596 1597 /* Get length of multicast list */ 1598 for (count = 0; maddr != NULL; maddr = maddr->ifma_link.le_next, count++); 1599 1600 if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) { 1601 /* 1602 * Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are 1603 * set, or if we have been asked to deal with more than 9 multicast 1604 * addresses. To do this: set MPE and PME in SWC1 1605 */ 1606 XE_SELECT_PAGE(0x42); 1607 XE_OUTB(XE_SWC1, 0x06); 1608 } 1609 else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) { 1610 /* 1611 * Program the filters for up to 9 addresses 1612 */ 1613 XE_SELECT_PAGE(0x42); 1614 XE_OUTB(XE_SWC1, 0x01); 1615 XE_SELECT_PAGE(0x40); 1616 XE_OUTB(XE_CMD0, XE_CMD0_OFFLINE); 1617 /*xe_reg_dump(scp);*/ 1618 xe_setaddrs(scp); 1619 /*xe_reg_dump(scp);*/ 1620 XE_SELECT_PAGE(0x40); 1621 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); 1622 } 1623 else { 1624 /* 1625 * No multicast operation (default) 1626 */ 1627 XE_SELECT_PAGE(0x42); 1628 XE_OUTB(XE_SWC1, 0); 1629 } 1630 XE_SELECT_PAGE(0); 1631 } 1632 1633 1634 /* 1635 * Set up all on-chip addresses (for multicast). AFAICS, there are 10 1636 * of these things; the first is our MAC address, the other 9 are mcast 1637 * addresses, padded with the MAC address if there aren't enough. 1638 * XXX - This doesn't work right, but I'm not sure why yet. We seem to be 1639 * XXX - doing much the same as the Linux code, which is weird enough that 1640 * XXX - it's probably right (despite my earlier comments to the contrary). 1641 */ 1642 static void 1643 xe_setaddrs(struct xe_softc *scp) { 1644 struct ifmultiaddr *maddr; 1645 u_int8_t *addr; 1646 u_int8_t page, slot, byte, i; 1647 1648 maddr = scp->arpcom.ac_if.if_multiaddrs.lh_first; 1649 1650 XE_SELECT_PAGE(page = 0x50); 1651 1652 for (slot = 0, byte = 8; slot < 10; slot++) { 1653 1654 if (slot == 0) 1655 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1656 else { 1657 while (maddr != NULL && maddr->ifma_addr->sa_family != AF_LINK) 1658 maddr = maddr->ifma_link.le_next; 1659 if (maddr != NULL) 1660 addr = LLADDR((struct sockaddr_dl *)maddr->ifma_addr); 1661 else 1662 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1663 } 1664 1665 for (i = 0; i < 6; i++, byte++) { 1666 #if XE_DEBUG > 2 1667 if (i) 1668 printf(":%x", addr[i]); 1669 else 1670 device_printf(scp->dev, "individual addresses %d: %x", slot, addr[0]); 1671 #endif 1672 1673 if (byte > 15) { 1674 page++; 1675 byte = 8; 1676 XE_SELECT_PAGE(page); 1677 } 1678 1679 if (scp->mohawk) 1680 XE_OUTB(byte, addr[5 - i]); 1681 else 1682 XE_OUTB(byte, addr[i]); 1683 } 1684 #if XE_DEBUG > 2 1685 printf("\n"); 1686 #endif 1687 } 1688 1689 XE_SELECT_PAGE(0); 1690 } 1691 1692 1693 /* 1694 * Write an outgoing packet to the card using programmed I/O. 1695 */ 1696 static int 1697 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) { 1698 struct mbuf *mbp2; 1699 u_int16_t len, pad, free, ok; 1700 u_int8_t *data; 1701 u_int8_t savebyte[2], wantbyte; 1702 1703 /* Get total packet length */ 1704 for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next); 1705 1706 /* Packets < minimum length may need to be padded out */ 1707 pad = 0; 1708 if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) { 1709 pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1; 1710 len = ETHER_MIN_LEN - ETHER_CRC_LEN; 1711 } 1712 1713 /* Check transmit buffer space */ 1714 XE_SELECT_PAGE(0); 1715 XE_OUTW(XE_TRS, len+2); 1716 free = XE_INW(XE_TSO); 1717 ok = free & 0x8000; 1718 free &= 0x7fff; 1719 if (free <= len + 2) 1720 return 1; 1721 1722 /* Send packet length to card */ 1723 XE_OUTW(XE_EDP, len); 1724 1725 /* 1726 * Write packet to card using PIO (code stolen from the ed driver) 1727 */ 1728 wantbyte = 0; 1729 while (mbp != NULL) { 1730 len = mbp->m_len; 1731 if (len > 0) { 1732 data = mtod(mbp, caddr_t); 1733 if (wantbyte) { /* Finish the last word */ 1734 savebyte[1] = *data; 1735 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1736 data++; 1737 len--; 1738 wantbyte = 0; 1739 } 1740 if (len > 1) { /* Output contiguous words */ 1741 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data, 1742 len >> 1); 1743 data += len & ~1; 1744 len &= 1; 1745 } 1746 if (len == 1) { /* Save last byte, if necessary */ 1747 savebyte[0] = *data; 1748 wantbyte = 1; 1749 } 1750 } 1751 mbp = mbp->m_next; 1752 } 1753 if (wantbyte) /* Last byte for odd-length packets */ 1754 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1755 1756 /* 1757 * For CE3 cards, just tell 'em to send -- apparently the card will pad out 1758 * short packets with random cruft. Otherwise, write nonsense words to fill 1759 * out the packet. I guess it is then sent automatically (?) 1760 */ 1761 if (scp->mohawk) 1762 XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR); 1763 else 1764 while (pad > 0) { 1765 XE_OUTW(XE_EDP, 0xdead); 1766 pad--; 1767 } 1768 1769 return 0; 1770 } 1771 1772 #if 0 1773 /* 1774 * Compute the 32-bit Ethernet CRC for the given buffer. 1775 */ 1776 static u_int32_t 1777 xe_compute_crc(u_int8_t *data, int len) { 1778 u_int32_t crc = 0xffffffff; 1779 u_int32_t poly = 0x04c11db6; 1780 u_int8_t current, crc31, bit; 1781 int i, k; 1782 1783 for (i = 0; i < len; i++) { 1784 current = data[i]; 1785 for (k = 1; k <= 8; k++) { 1786 if (crc & 0x80000000) { 1787 crc31 = 0x01; 1788 } 1789 else { 1790 crc31 = 0; 1791 } 1792 bit = crc31 ^ (current & 0x01); 1793 crc <<= 1; 1794 current >>= 1; 1795 if (bit) { 1796 crc = (crc ^ poly)|1; 1797 } 1798 } 1799 } 1800 return crc; 1801 } 1802 1803 1804 /* 1805 * Convert a CRC into an index into the multicast hash table. What we do is 1806 * take the most-significant 6 bits of the CRC, reverse them, and use that as 1807 * the bit number in the hash table. Bits 5:3 of the result give the byte 1808 * within the table (0-7); bits 2:0 give the bit number within that byte (also 1809 * 0-7), ie. the number of shifts needed to get it into the lsb position. 1810 */ 1811 static int 1812 xe_compute_hashbit(u_int32_t crc) { 1813 u_int8_t hashbit = 0; 1814 int i; 1815 1816 for (i = 0; i < 6; i++) { 1817 hashbit >>= 1; 1818 if (crc & 0x80000000) { 1819 hashbit &= 0x80; 1820 } 1821 crc <<= 1; 1822 } 1823 return (hashbit >> 2); 1824 } 1825 1826 #endif 1827 1828 1829 1830 /************************************************************** 1831 * * 1832 * M I I F U N C T I O N S * 1833 * * 1834 **************************************************************/ 1835 1836 /* 1837 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't 1838 * seem to work any better than the xirc2_ps stuff, but it's cleaner code. 1839 * XXX - this stuff shouldn't be here. It should all be abstracted off to 1840 * XXX - some kind of common MII-handling code, shared by all drivers. But 1841 * XXX - that's a whole other mission. 1842 */ 1843 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x)) 1844 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x)) 1845 1846 1847 /* 1848 * Sync the PHYs by setting data bit and strobing the clock 32 times. 1849 */ 1850 static void 1851 xe_mii_sync(struct xe_softc *scp) { 1852 int i; 1853 1854 XE_SELECT_PAGE(2); 1855 XE_MII_SET(XE_MII_DIR|XE_MII_WRD); 1856 1857 for (i = 0; i < 32; i++) { 1858 XE_MII_SET(XE_MII_CLK); 1859 DELAY(1); 1860 XE_MII_CLR(XE_MII_CLK); 1861 DELAY(1); 1862 } 1863 } 1864 1865 1866 /* 1867 * Look for a MII-compliant PHY. If we find one, reset it. 1868 */ 1869 static int 1870 xe_mii_init(struct xe_softc *scp) { 1871 u_int16_t status; 1872 1873 status = xe_phy_readreg(scp, PHY_BMSR); 1874 if ((status & 0xff00) != 0x7800) { 1875 #if XE_DEBUG > 1 1876 device_printf(scp->dev, "no PHY found, %0x\n", status); 1877 #endif 1878 return 0; 1879 } 1880 else { 1881 #if XE_DEBUG > 1 1882 device_printf(scp->dev, "PHY OK!\n"); 1883 #endif 1884 1885 /* Reset the PHY */ 1886 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET); 1887 DELAY(500); 1888 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET); 1889 XE_MII_DUMP(scp); 1890 return 1; 1891 } 1892 } 1893 1894 1895 /* 1896 * Clock a series of bits through the MII. 1897 */ 1898 static void 1899 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) { 1900 int i; 1901 1902 XE_SELECT_PAGE(2); 1903 XE_MII_CLR(XE_MII_CLK); 1904 1905 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 1906 if (bits & i) { 1907 XE_MII_SET(XE_MII_WRD); 1908 } else { 1909 XE_MII_CLR(XE_MII_WRD); 1910 } 1911 DELAY(1); 1912 XE_MII_CLR(XE_MII_CLK); 1913 DELAY(1); 1914 XE_MII_SET(XE_MII_CLK); 1915 } 1916 } 1917 1918 1919 /* 1920 * Read an PHY register through the MII. 1921 */ 1922 static int 1923 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) { 1924 int i, ack, s; 1925 1926 s = splimp(); 1927 1928 /* 1929 * Set up frame for RX. 1930 */ 1931 frame->mii_stdelim = XE_MII_STARTDELIM; 1932 frame->mii_opcode = XE_MII_READOP; 1933 frame->mii_turnaround = 0; 1934 frame->mii_data = 0; 1935 1936 XE_SELECT_PAGE(2); 1937 XE_OUTB(XE_GPR2, 0); 1938 1939 /* 1940 * Turn on data xmit. 1941 */ 1942 XE_MII_SET(XE_MII_DIR); 1943 1944 xe_mii_sync(scp); 1945 1946 /* 1947 * Send command/address info. 1948 */ 1949 xe_mii_send(scp, frame->mii_stdelim, 2); 1950 xe_mii_send(scp, frame->mii_opcode, 2); 1951 xe_mii_send(scp, frame->mii_phyaddr, 5); 1952 xe_mii_send(scp, frame->mii_regaddr, 5); 1953 1954 /* Idle bit */ 1955 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD)); 1956 DELAY(1); 1957 XE_MII_SET(XE_MII_CLK); 1958 DELAY(1); 1959 1960 /* Turn off xmit. */ 1961 XE_MII_CLR(XE_MII_DIR); 1962 1963 /* Check for ack */ 1964 XE_MII_CLR(XE_MII_CLK); 1965 DELAY(1); 1966 ack = XE_INB(XE_GPR2) & XE_MII_RDD; 1967 XE_MII_SET(XE_MII_CLK); 1968 DELAY(1); 1969 1970 /* 1971 * Now try reading data bits. If the ack failed, we still 1972 * need to clock through 16 cycles to keep the PHY(s) in sync. 1973 */ 1974 if (ack) { 1975 for(i = 0; i < 16; i++) { 1976 XE_MII_CLR(XE_MII_CLK); 1977 DELAY(1); 1978 XE_MII_SET(XE_MII_CLK); 1979 DELAY(1); 1980 } 1981 goto fail; 1982 } 1983 1984 for (i = 0x8000; i; i >>= 1) { 1985 XE_MII_CLR(XE_MII_CLK); 1986 DELAY(1); 1987 if (!ack) { 1988 if (XE_INB(XE_GPR2) & XE_MII_RDD) 1989 frame->mii_data |= i; 1990 DELAY(1); 1991 } 1992 XE_MII_SET(XE_MII_CLK); 1993 DELAY(1); 1994 } 1995 1996 fail: 1997 1998 XE_MII_CLR(XE_MII_CLK); 1999 DELAY(1); 2000 XE_MII_SET(XE_MII_CLK); 2001 DELAY(1); 2002 2003 splx(s); 2004 2005 if (ack) 2006 return(1); 2007 return(0); 2008 } 2009 2010 2011 /* 2012 * Write to a PHY register through the MII. 2013 */ 2014 static int 2015 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) { 2016 int s; 2017 2018 s = splimp(); 2019 2020 /* 2021 * Set up frame for TX. 2022 */ 2023 frame->mii_stdelim = XE_MII_STARTDELIM; 2024 frame->mii_opcode = XE_MII_WRITEOP; 2025 frame->mii_turnaround = XE_MII_TURNAROUND; 2026 2027 XE_SELECT_PAGE(2); 2028 2029 /* 2030 * Turn on data output. 2031 */ 2032 XE_MII_SET(XE_MII_DIR); 2033 2034 xe_mii_sync(scp); 2035 2036 xe_mii_send(scp, frame->mii_stdelim, 2); 2037 xe_mii_send(scp, frame->mii_opcode, 2); 2038 xe_mii_send(scp, frame->mii_phyaddr, 5); 2039 xe_mii_send(scp, frame->mii_regaddr, 5); 2040 xe_mii_send(scp, frame->mii_turnaround, 2); 2041 xe_mii_send(scp, frame->mii_data, 16); 2042 2043 /* Idle bit. */ 2044 XE_MII_SET(XE_MII_CLK); 2045 DELAY(1); 2046 XE_MII_CLR(XE_MII_CLK); 2047 DELAY(1); 2048 2049 /* 2050 * Turn off xmit. 2051 */ 2052 XE_MII_CLR(XE_MII_DIR); 2053 2054 splx(s); 2055 2056 return(0); 2057 } 2058 2059 2060 /* 2061 * Read a register from the PHY. 2062 */ 2063 static u_int16_t 2064 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) { 2065 struct xe_mii_frame frame; 2066 2067 bzero((char *)&frame, sizeof(frame)); 2068 2069 frame.mii_phyaddr = 0; 2070 frame.mii_regaddr = reg; 2071 xe_mii_readreg(scp, &frame); 2072 2073 return(frame.mii_data); 2074 } 2075 2076 2077 /* 2078 * Write to a PHY register. 2079 */ 2080 static void 2081 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) { 2082 struct xe_mii_frame frame; 2083 2084 bzero((char *)&frame, sizeof(frame)); 2085 2086 frame.mii_phyaddr = 0; 2087 frame.mii_regaddr = reg; 2088 frame.mii_data = data; 2089 xe_mii_writereg(scp, &frame); 2090 2091 return; 2092 } 2093 2094 2095 #ifdef XE_DEBUG 2096 /* 2097 * A bit of debugging code. 2098 */ 2099 static void 2100 xe_mii_dump(struct xe_softc *scp) { 2101 int i, s; 2102 2103 s = splimp(); 2104 2105 device_printf(scp->dev, "MII registers: "); 2106 for (i = 0; i < 2; i++) { 2107 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 2108 } 2109 for (i = 4; i < 7; i++) { 2110 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 2111 } 2112 printf("\n"); 2113 2114 (void)splx(s); 2115 } 2116 2117 static void 2118 xe_reg_dump(struct xe_softc *scp) { 2119 int page, i, s; 2120 2121 s = splimp(); 2122 2123 device_printf(scp->dev, "Common registers: "); 2124 for (i = 0; i < 8; i++) { 2125 printf(" %2.2x", XE_INB(i)); 2126 } 2127 printf("\n"); 2128 2129 for (page = 0; page <= 8; page++) { 2130 device_printf(scp->dev, "Register page %2.2x: ", page); 2131 XE_SELECT_PAGE(page); 2132 for (i = 8; i < 16; i++) { 2133 printf(" %2.2x", XE_INB(i)); 2134 } 2135 printf("\n"); 2136 } 2137 2138 for (page = 0x10; page < 0x5f; page++) { 2139 if ((page >= 0x11 && page <= 0x3f) || 2140 (page == 0x41) || 2141 (page >= 0x43 && page <= 0x4f) || 2142 (page >= 0x59)) 2143 continue; 2144 device_printf(scp->dev, "Register page %2.2x: ", page); 2145 XE_SELECT_PAGE(page); 2146 for (i = 8; i < 16; i++) { 2147 printf(" %2.2x", XE_INB(i)); 2148 } 2149 printf("\n"); 2150 } 2151 2152 (void)splx(s); 2153 } 2154 #endif 2155 2156 int 2157 xe_activate(device_t dev) 2158 { 2159 struct xe_softc *sc = device_get_softc(dev); 2160 int start, err; 2161 2162 if (!sc->dingo) { 2163 sc->port_rid = 0; /* 0 is managed by pccard */ 2164 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, 2165 &sc->port_rid, 0, ~0, 16, RF_ACTIVE); 2166 } else { 2167 /* 2168 * Find a 16 byte aligned ioport for the card. 2169 */ 2170 #if XE_DEBUG > 0 2171 device_printf(dev, "Finding an aligned port for RealPort\n"); 2172 #endif /* XE_DEBUG */ 2173 sc->port_rid = 1; /* 0 is managed by pccard */ 2174 start = 0x100; 2175 do { 2176 sc->port_res = bus_alloc_resource(dev, 2177 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16, 2178 RF_ACTIVE); 2179 if (sc->port_res == 0) 2180 break; /* we failed */ 2181 if ((rman_get_start(sc->port_res) & 0xf) == 0) 2182 break; /* good */ 2183 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2184 sc->port_res); 2185 start = (rman_get_start(sc->port_res) + 15) & ~0xf; 2186 } while (1); 2187 #if XE_DEBUG > 2 2188 device_printf(dev, "port 0x%0lx, size 0x%0lx\n", 2189 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 2190 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); 2191 #endif /* XE_DEBUG */ 2192 } 2193 if (!sc->port_res) { 2194 #if XE_DEBUG > 0 2195 device_printf(dev, "Cannot allocate ioport\n"); 2196 #endif 2197 return ENOMEM; 2198 } 2199 2200 sc->irq_rid = 0; 2201 sc->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid, 2202 0, ~0, 1, RF_ACTIVE); 2203 if (!sc->irq_res) { 2204 #if XE_DEBUG > 0 2205 device_printf(dev, "Cannot allocate irq\n"); 2206 #endif 2207 xe_deactivate(dev); 2208 return ENOMEM; 2209 } 2210 if ((err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, xe_intr, sc, 2211 &sc->intrhand)) != 0) { 2212 xe_deactivate(dev); 2213 return err; 2214 } 2215 2216 sc->bst = rman_get_bustag(sc->port_res); 2217 sc->bsh = rman_get_bushandle(sc->port_res); 2218 return (0); 2219 } 2220 2221 void 2222 xe_deactivate(device_t dev) 2223 { 2224 struct xe_softc *sc = device_get_softc(dev); 2225 2226 if (sc->intrhand) 2227 bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 2228 sc->intrhand = 0; 2229 if (sc->port_res) 2230 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2231 sc->port_res); 2232 sc->port_res = 0; 2233 if (sc->irq_res) 2234 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, 2235 sc->irq_res); 2236 sc->irq_res = 0; 2237 return; 2238 } 2239 2240 static device_method_t xe_pccard_methods[] = { 2241 /* Device interface */ 2242 DEVMETHOD(device_probe, xe_probe), 2243 DEVMETHOD(device_attach, xe_attach), 2244 DEVMETHOD(device_detach, xe_detach), 2245 2246 { 0, 0 } 2247 }; 2248 2249 static driver_t xe_pccard_driver = { 2250 "xe", 2251 xe_pccard_methods, 2252 sizeof(struct xe_softc), 2253 }; 2254 2255 devclass_t xe_devclass; 2256 2257 DECLARE_DUMMY_MODULE(if_xe); 2258 DRIVER_MODULE(if_xe, pccard, xe_pccard_driver, xe_devclass, 0, 0); 2259 2260