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 1.16 2005/02/20 04:02:14 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/ifq_var.h> 133 #include <net/if_arp.h> 134 #include <net/if_dl.h> 135 #include <net/if_media.h> 136 #include <net/if_mib.h> 137 #include <net/bpf.h> 138 139 #include <bus/pccard/pccardvar.h> 140 #include "card_if.h" 141 142 #include "if_xereg.h" 143 #include "if_xevar.h" 144 145 #include <machine/clock.h> 146 147 /* 148 * MII command structure 149 */ 150 struct xe_mii_frame { 151 u_int8_t mii_stdelim; 152 u_int8_t mii_opcode; 153 u_int8_t mii_phyaddr; 154 u_int8_t mii_regaddr; 155 u_int8_t mii_turnaround; 156 u_int16_t mii_data; 157 }; 158 159 /* 160 * Media autonegotiation progress constants 161 */ 162 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */ 163 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */ 164 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */ 165 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */ 166 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */ 167 168 169 /* 170 * Prototypes start here 171 */ 172 static int xe_probe (device_t dev); 173 static int xe_attach (device_t dev); 174 static int xe_detach (device_t dev); 175 static int xe_activate (device_t dev); 176 static void xe_deactivate (device_t dev); 177 static void xe_init (void *xscp); 178 static void xe_start (struct ifnet *ifp); 179 static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *); 180 static void xe_watchdog (struct ifnet *ifp); 181 static int xe_media_change (struct ifnet *ifp); 182 static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp); 183 static timeout_t xe_setmedia; 184 static void xe_hard_reset (struct xe_softc *scp); 185 static void xe_soft_reset (struct xe_softc *scp); 186 static void xe_stop (struct xe_softc *scp); 187 static void xe_enable_intr (struct xe_softc *scp); 188 static void xe_disable_intr (struct xe_softc *scp); 189 static void xe_setmulti (struct xe_softc *scp); 190 static void xe_setaddrs (struct xe_softc *scp); 191 static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp); 192 #if 0 193 static u_int32_t xe_compute_crc (u_int8_t *data, int len); 194 static int xe_compute_hashbit (u_int32_t crc); 195 #endif 196 197 /* 198 * MII functions 199 */ 200 static void xe_mii_sync (struct xe_softc *scp); 201 static int xe_mii_init (struct xe_softc *scp); 202 static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt); 203 static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame); 204 static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame); 205 static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg); 206 static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data); 207 208 /* 209 * Debug functions -- uncomment for VERY verbose dignostic information. 210 * Set to 1 for less verbose information 211 */ 212 /* #define XE_DEBUG 2 */ 213 #ifdef XE_DEBUG 214 #define XE_REG_DUMP(scp) xe_reg_dump((scp)) 215 #define XE_MII_DUMP(scp) xe_mii_dump((scp)) 216 static void xe_reg_dump (struct xe_softc *scp); 217 static void xe_mii_dump (struct xe_softc *scp); 218 #else 219 #define XE_REG_DUMP(scp) 220 #define XE_MII_DUMP(scp) 221 #endif 222 223 /* 224 * Fixing for RealPort cards - they need a little furtling to get the 225 * ethernet working 226 */ 227 static int 228 xe_cem56fix(device_t dev) 229 { 230 struct xe_softc *sc = (struct xe_softc *) device_get_softc(dev); 231 bus_space_tag_t bst; 232 bus_space_handle_t bsh; 233 struct resource *r; 234 int rid; 235 int ioport; 236 237 #ifdef XE_DEBUG 238 device_printf(dev, "Hacking your Realport, master\n"); 239 #endif 240 241 #if XE_DEBUG > 1 242 device_printf(dev, "Realport port 0x%0lx, size 0x%0lx\n", 243 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 244 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); 245 #endif 246 247 rid = 0; 248 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE); 249 if (!r) { 250 #if XE_DEBUG > 0 251 device_printf(dev, "Can't map in attribute memory\n"); 252 #endif 253 return -1; 254 } 255 256 bsh = rman_get_bushandle(r); 257 bst = rman_get_bustag(r); 258 259 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid, 260 PCCARD_A_MEM_ATTR); 261 262 bus_space_write_1(bst, bsh, DINGO_ECOR, DINGO_ECOR_IRQ_LEVEL | 263 DINGO_ECOR_INT_ENABLE | 264 DINGO_ECOR_IOB_ENABLE | 265 DINGO_ECOR_ETH_ENABLE); 266 ioport = bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid); 267 bus_space_write_1(bst, bsh, DINGO_EBAR0, ioport & 0xff); 268 bus_space_write_1(bst, bsh, DINGO_EBAR1, (ioport >> 8) & 0xff); 269 270 bus_space_write_1(bst, bsh, DINGO_DCOR0, DINGO_DCOR0_SF_INT); 271 bus_space_write_1(bst, bsh, DINGO_DCOR1, DINGO_DCOR1_INT_LEVEL | 272 DINGO_DCOR1_EEDIO); 273 bus_space_write_1(bst, bsh, DINGO_DCOR2, 0x00); 274 bus_space_write_1(bst, bsh, DINGO_DCOR3, 0x00); 275 bus_space_write_1(bst, bsh, DINGO_DCOR4, 0x00); 276 277 bus_release_resource(dev, SYS_RES_MEMORY, rid, r); 278 279 /* success! */ 280 return 0; 281 } 282 283 /* 284 * PCMCIA probe routine. 285 * Probe and identify the device. Called by the slot manager when the card is 286 * inserted or the machine wakes up from suspend mode. Assmes that the slot 287 * structure has been initialised already. 288 */ 289 static int 290 xe_probe(device_t dev) 291 { 292 struct xe_softc *scp = (struct xe_softc *) device_get_softc(dev); 293 bus_space_tag_t bst; 294 bus_space_handle_t bsh; 295 int buf; 296 u_char ver_str[CISTPL_BUFSIZE>>1]; 297 off_t offs; 298 int success, rc, i; 299 int rid; 300 struct resource *r; 301 302 success = 0; 303 304 #ifdef XE_DEBUG 305 device_printf(dev, "xe: Probing\n"); 306 #endif 307 308 /* Map in the CIS */ 309 rid = 0; 310 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE); 311 if (!r) { 312 #ifdef XE_DEBUG 313 device_printf(dev, "Can't map in cis\n"); 314 #endif 315 return ENOMEM; 316 } 317 bsh = rman_get_bushandle(r); 318 bst = rman_get_bustag(r); 319 buf = 0; 320 321 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid, 322 PCCARD_A_MEM_ATTR); 323 324 /* Grep through CIS looking for relevant tuples */ 325 rc = 0; 326 offs = 0; 327 do { 328 u_int16_t vendor; 329 u_int8_t rev, media, prod; 330 331 switch (CISTPL_TYPE(buf)) { 332 333 case 0x15: /* Grab version string (needed to ID some weird CE2's) */ 334 #if XE_DEBUG > 1 335 device_printf(dev, "Got version string (0x15)\n"); 336 #endif 337 for (i = 0; i < CISTPL_LEN(buf); ver_str[i] = CISTPL_DATA(buf, i++)); 338 ver_str[i] = '\0'; 339 ver_str[(CISTPL_BUFSIZE>>1) - 1] = CISTPL_LEN(buf); 340 success++; 341 break; 342 343 case 0x20: /* Figure out what type of card we have */ 344 #if XE_DEBUG > 1 345 device_printf(dev, "Got card ID (0x20)\n"); 346 #endif 347 vendor = CISTPL_DATA(buf, 0) + (CISTPL_DATA(buf, 1) << 8); 348 rev = CISTPL_DATA(buf, 2); 349 media = CISTPL_DATA(buf, 3); 350 prod = CISTPL_DATA(buf, 4); 351 352 switch (vendor) { /* Get vendor ID */ 353 case 0x0105: 354 scp->vendor = "Xircom"; break; 355 case 0x0138: 356 case 0x0183: 357 scp->vendor = "Compaq"; break; 358 case 0x0089: 359 scp->vendor = "Intel"; break; 360 default: 361 scp->vendor = "Unknown"; 362 } 363 364 if (!((prod & 0x40) && (media & 0x01))) { 365 #if XE_DEBUG > 1 366 device_printf(dev, "Not a PCMCIA Ethernet card!\n"); 367 #endif 368 rc = ENODEV; /* Not a PCMCIA Ethernet device */ 369 } else { 370 if (media & 0x10) { /* Ethernet/modem cards */ 371 #if XE_DEBUG > 1 372 device_printf(dev, "Card is Ethernet/modem combo\n"); 373 #endif 374 scp->modem = 1; 375 switch (prod & 0x0f) { 376 case 1: 377 scp->card_type = "CEM"; break; 378 case 2: 379 scp->ce2 = 1; 380 scp->card_type = "CEM2"; break; 381 case 3: 382 scp->ce2 = 1; 383 scp->card_type = "CEM3"; break; 384 case 4: 385 scp->ce2 = 1; 386 scp->card_type = "CEM33"; break; 387 case 5: 388 scp->mohawk = 1; 389 scp->card_type = "CEM56M"; break; 390 case 6: 391 case 7: /* Some kind of RealPort card */ 392 scp->mohawk = 1; 393 scp->dingo = 1; 394 scp->card_type = "CEM56"; break; 395 default: 396 rc = ENODEV; 397 } 398 } else { /* Ethernet-only cards */ 399 #if XE_DEBUG > 1 400 device_printf(dev, "Card is Ethernet only\n"); 401 #endif 402 switch (prod & 0x0f) { 403 case 1: 404 scp->card_type = "CE"; break; 405 case 2: 406 scp->ce2 = 1; 407 scp->card_type = "CE2"; break; 408 case 3: 409 scp->mohawk = 1; 410 scp->card_type = "CE3"; break; 411 default: 412 rc = ENODEV; 413 } 414 } 415 } 416 success++; 417 break; 418 419 case 0x22: /* Get MAC address */ 420 if ((CISTPL_LEN(buf) == 8) && 421 (CISTPL_DATA(buf, 0) == 0x04) && 422 (CISTPL_DATA(buf, 1) == ETHER_ADDR_LEN)) { 423 #if XE_DEBUG > 1 424 device_printf(dev, "Got MAC address (0x22)\n"); 425 #endif 426 for (i = 0; i < ETHER_ADDR_LEN; i++) 427 scp->arpcom.ac_enaddr[i] = CISTPL_DATA(buf, i+2); 428 } 429 success++; 430 break; 431 default: 432 break; 433 } 434 435 if (CISTPL_TYPE(buf) == 0xff) 436 break; 437 /* Skip to next tuple */ 438 buf += ((CISTPL_LEN(buf) + 2) << 1); 439 440 } while (1); 441 442 /* unmap the cis */ 443 bus_release_resource(dev, SYS_RES_MEMORY, rid, r); 444 445 if (rc) 446 return(rc); 447 448 /* Die now if something went wrong above */ 449 if (success < 3) 450 return ENXIO; 451 452 /* Check for certain strange CE2's that look like CE's */ 453 if (strcmp(scp->card_type, "CE") == 0) { 454 u_char *str = ver_str; 455 #if XE_DEBUG > 1 456 device_printf(dev, "Checking for weird CE2 string\n"); 457 #endif 458 str += strlen(str) + 1; /* Skip forward to 3rd version string */ 459 str += strlen(str) + 1; 460 str += strlen(str) + 1; 461 for (i = 0; i < strlen(str) - 2; i++) { 462 if (bcmp(&str[i], "CE2", 3) ==0) { /* Look for "CE2" string */ 463 scp->card_type = "CE2"; 464 } 465 } 466 } 467 468 /* Reject unsupported cards */ 469 if (strcmp(scp->card_type, "CE") == 0 || strcmp(scp->card_type, "CEM") == 0) { 470 device_printf(dev, "Sorry, your %s card is not supported :(\n", 471 scp->card_type); 472 return ENODEV; 473 } 474 475 /* Success */ 476 return 0; 477 } 478 479 /* 480 * The device entry is being removed, probably because someone ejected the 481 * card. The interface should have been brought down manually before calling 482 * this function; if not you may well lose packets. In any case, I shut down 483 * the card and the interface, and hope for the best. 484 */ 485 static int 486 xe_detach(device_t dev) { 487 struct xe_softc *sc = device_get_softc(dev); 488 489 sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING; 490 callout_stop(&sc->xe_timer); 491 ether_ifdetach(&sc->arpcom.ac_if); 492 xe_deactivate(dev); 493 return 0; 494 } 495 496 /* 497 * Attach a device. 498 */ 499 static int 500 xe_attach (device_t dev) { 501 struct xe_softc *scp = device_get_softc(dev); 502 int err; 503 504 #ifdef XE_DEBUG 505 device_printf(dev, "attach\n"); 506 #endif 507 508 if ((err = xe_activate(dev)) != 0) 509 return (err); 510 511 /* Fill in some private data */ 512 scp->ifp = &scp->arpcom.ac_if; 513 scp->ifm = &scp->ifmedia; 514 scp->autoneg_status = 0; 515 516 /* Hack RealPorts into submission */ 517 if (scp->dingo && xe_cem56fix(dev) < 0) { 518 device_printf(dev, "Unable to fix your RealPort\n"); 519 xe_deactivate(dev); 520 return ENODEV; 521 } 522 523 /* Hopefully safe to read this here */ 524 XE_SELECT_PAGE(4); 525 scp->version = XE_INB(XE_BOV); 526 527 scp->dev = dev; 528 /* Initialise the ifnet structure */ 529 scp->ifp->if_softc = scp; 530 if_initname(scp->ifp, "xe", device_get_unit(dev)); 531 scp->ifp->if_timer = 0; 532 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 533 scp->ifp->if_linkmib = &scp->mibdata; 534 scp->ifp->if_linkmiblen = sizeof scp->mibdata; 535 scp->ifp->if_start = xe_start; 536 scp->ifp->if_ioctl = xe_ioctl; 537 scp->ifp->if_watchdog = xe_watchdog; 538 scp->ifp->if_init = xe_init; 539 ifq_set_maxlen(&scp->ifp->if_snd, IFQ_MAXLEN); 540 ifq_set_ready(&scp->ifp->if_snd); 541 542 /* Initialise the ifmedia structure */ 543 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status); 544 callout_init(&scp->xe_timer); 545 546 /* 547 * Fill in supported media types. Some cards _do_ support full duplex 548 * operation, but this driver doesn't, yet. Therefore we leave those modes 549 * out of the list. We support some form of autoselection in all cases. 550 */ 551 if (scp->mohawk) { 552 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL); 553 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 554 } 555 else { 556 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 557 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL); 558 } 559 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL); 560 561 /* Default is to autoselect best supported media type */ 562 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO); 563 564 /* Print some useful information */ 565 device_printf(dev, "%s %s, bonding version %#x%s%s\n", 566 scp->vendor, 567 scp->card_type, 568 scp->version, 569 scp->mohawk ? ", 100Mbps capable" : "", 570 scp->modem ? ", with modem" : ""); 571 if (scp->mohawk) { 572 XE_SELECT_PAGE(0x10); 573 device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n", 574 XE_INW(XE_DINGOID), 575 XE_INW(XE_RevID), 576 XE_INW(XE_VendorID)); 577 } 578 if (scp->ce2) { 579 XE_SELECT_PAGE(0x45); 580 device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV)); 581 } 582 583 /* Attach the interface */ 584 ether_ifattach(scp->ifp, scp->arpcom.ac_enaddr); 585 586 /* Done */ 587 return 0; 588 } 589 590 591 /* 592 * Initialize device. Completes the reset procedure on the card and starts 593 * output. If there's an autonegotiation in progress we DON'T do anything; 594 * the media selection code will call us again when it's done. 595 */ 596 static void 597 xe_init(void *xscp) { 598 struct xe_softc *scp = xscp; 599 int s; 600 601 #ifdef XE_DEBUG 602 device_printf(scp->dev, "init\n"); 603 #endif 604 605 if (TAILQ_EMPTY(&scp->ifp->if_addrhead)) return; 606 607 /* Reset transmitter flags */ 608 scp->tx_queued = 0; 609 scp->tx_tpr = 0; 610 scp->tx_collisions = 0; 611 scp->ifp->if_timer = 0; 612 613 s = splimp(); 614 615 XE_SELECT_PAGE(0x42); 616 XE_OUTB(XE_SWC0, 0x20); /* Disable source insertion (WTF is that?) */ 617 618 /* 619 * Set the 'local memory dividing line' -- splits the 32K card memory into 620 * 8K for transmit buffers and 24K for receive. This is done automatically 621 * on newer revision cards. 622 */ 623 if (scp->srev != 1) { 624 XE_SELECT_PAGE(2); 625 XE_OUTW(XE_RBS, 0x2000); 626 } 627 628 /* Set up multicast addresses */ 629 xe_setmulti(scp); 630 631 /* Fix the data offset register -- reset leaves it off-by-one */ 632 XE_SELECT_PAGE(0); 633 XE_OUTW(XE_DO, 0x2000); 634 635 /* 636 * Set MAC interrupt masks and clear status regs. The bit names are direct 637 * from the Linux code; I have no idea what most of them do. 638 */ 639 XE_SELECT_PAGE(0x40); /* Bit 7..0 */ 640 XE_OUTB(XE_RX0Msk, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */ 641 XE_OUTB(XE_TX0Msk, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ 642 XE_OUTB(XE_TX0Msk+1, 0xb0); /* rsv, rsv, PTD, EXT, rsv, rsv, rsv, rsv */ 643 XE_OUTB(XE_RST0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */ 644 XE_OUTB(XE_TXST0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ 645 XE_OUTB(XE_TXST1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */ 646 647 /* 648 * Check for an in-progress autonegotiation. If one is active, just set 649 * IFF_RUNNING and return. The media selection code will call us again when 650 * it's done. 651 */ 652 if (scp->autoneg_status) { 653 scp->ifp->if_flags |= IFF_RUNNING; 654 } 655 else { 656 /* Enable receiver, put MAC online */ 657 XE_SELECT_PAGE(0x40); 658 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); 659 660 /* Set up IMR, enable interrupts */ 661 xe_enable_intr(scp); 662 663 /* Attempt to start output */ 664 scp->ifp->if_flags |= IFF_RUNNING; 665 scp->ifp->if_flags &= ~IFF_OACTIVE; 666 xe_start(scp->ifp); 667 } 668 669 (void)splx(s); 670 } 671 672 673 /* 674 * Start output on interface. We make two assumptions here: 675 * 1) that the current priority is set to splimp _before_ this code 676 * is called *and* is returned to the appropriate priority after 677 * return 678 * 2) that the IFF_OACTIVE flag is checked before this code is called 679 * (i.e. that the output part of the interface is idle) 680 */ 681 static void 682 xe_start(struct ifnet *ifp) { 683 struct xe_softc *scp = ifp->if_softc; 684 struct mbuf *mbp; 685 686 /* 687 * Loop while there are packets to be sent, and space to send them. 688 */ 689 while (1) { 690 mbp = ifq_poll(&ifp->if_snd); /* Suck a packet off the send queue */ 691 692 if (mbp == NULL) { 693 /* 694 * We are using the !OACTIVE flag to indicate to the outside world that 695 * we can accept an additional packet rather than that the transmitter 696 * is _actually_ active. Indeed, the transmitter may be active, but if 697 * we haven't filled all the buffers with data then we still want to 698 * accept more. 699 */ 700 ifp->if_flags &= ~IFF_OACTIVE; 701 return; 702 } 703 704 if (xe_pio_write_packet(scp, mbp) != 0) { 705 ifp->if_flags |= IFF_OACTIVE; 706 return; 707 } 708 709 mbp = ifq_dequeue(&ifp->if_snd); 710 BPF_MTAP(ifp, mbp); 711 712 ifp->if_timer = 5; /* In case we don't hear from the card again */ 713 scp->tx_queued++; 714 715 m_freem(mbp); 716 } 717 } 718 719 720 /* 721 * Process an ioctl request. Adapted from the ed driver. 722 */ 723 static int 724 xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) { 725 struct xe_softc *scp; 726 int s, error; 727 728 scp = ifp->if_softc; 729 error = 0; 730 731 s = splimp(); 732 733 switch (command) { 734 735 case SIOCSIFADDR: 736 case SIOCGIFADDR: 737 case SIOCSIFMTU: 738 error = ether_ioctl(ifp, command, data); 739 break; 740 741 case SIOCSIFFLAGS: 742 /* 743 * If the interface is marked up and stopped, then start it. If it is 744 * marked down and running, then stop it. 745 */ 746 if (ifp->if_flags & IFF_UP) { 747 if (!(ifp->if_flags & IFF_RUNNING)) { 748 xe_hard_reset(scp); 749 xe_setmedia(scp); 750 xe_init(scp); 751 } 752 } 753 else { 754 if (ifp->if_flags & IFF_RUNNING) 755 xe_stop(scp); 756 } 757 758 case SIOCADDMULTI: 759 case SIOCDELMULTI: 760 /* 761 * Multicast list has (maybe) changed; set the hardware filter 762 * accordingly. This also serves to deal with promiscuous mode if we have 763 * a BPF listener active. 764 */ 765 xe_setmulti(scp); 766 error = 0; 767 break; 768 769 case SIOCSIFMEDIA: 770 case SIOCGIFMEDIA: 771 /* 772 * Someone wants to get/set media options. 773 */ 774 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command); 775 break; 776 777 default: 778 error = EINVAL; 779 } 780 781 (void)splx(s); 782 783 return error; 784 } 785 786 787 /* 788 * Card interrupt handler. 789 * 790 * This function is probably more complicated than it needs to be, as it 791 * attempts to deal with the case where multiple packets get sent between 792 * interrupts. This is especially annoying when working out the collision 793 * stats. Not sure whether this case ever really happens or not (maybe on a 794 * slow/heavily loaded machine?) so it's probably best to leave this like it 795 * is. 796 * 797 * Note that the crappy PIO used to get packets on and off the card means that 798 * you will spend a lot of time in this routine -- I can get my P150 to spend 799 * 90% of its time servicing interrupts if I really hammer the network. Could 800 * fix this, but then you'd start dropping/losing packets. The moral of this 801 * story? If you want good network performance _and_ some cycles left over to 802 * get your work done, don't buy a Xircom card. Or convince them to tell me 803 * how to do memory-mapped I/O :) 804 */ 805 static void 806 xe_intr(void *xscp) 807 { 808 struct xe_softc *scp = (struct xe_softc *) xscp; 809 struct ifnet *ifp; 810 int result; 811 u_int16_t rx_bytes, rxs, txs; 812 u_int8_t psr, isr, esr, rsr; 813 814 ifp = &scp->arpcom.ac_if; 815 rx_bytes = 0; /* Bytes received on this interrupt */ 816 result = 0; /* Set true if the interrupt is for us */ 817 818 if (scp->mohawk) { 819 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 820 } 821 822 psr = XE_INB(XE_PR); /* Stash the current register page */ 823 824 /* 825 * Read ISR to see what caused this interrupt. Note that this clears the 826 * ISR on CE2 type cards. 827 */ 828 if ((isr = XE_INB(XE_ISR)) && isr != 0xff) { 829 830 result = 1; /* This device did generate an int */ 831 esr = XE_INB(XE_ESR); /* Read the other status registers */ 832 XE_SELECT_PAGE(0x40); 833 rxs = XE_INB(XE_RST0); 834 XE_OUTB(XE_RST0, ~rxs & 0xff); 835 txs = XE_INB(XE_TXST0); 836 txs |= XE_INB(XE_TXST1) << 8; 837 XE_OUTB(XE_TXST0, 0); 838 XE_OUTB(XE_TXST1, 0); 839 XE_SELECT_PAGE(0); 840 841 #if XE_DEBUG > 2 842 printf("xe%d: ISR=%#2.2x ESR=%#2.2x RST=%#2.2x TXST=%#4.4x\n", unit, isr, esr, rxs, txs); 843 #endif 844 845 /* 846 * Handle transmit interrupts 847 */ 848 if (isr & XE_ISR_TX_PACKET) { 849 u_int8_t new_tpr, sent; 850 851 if ((new_tpr = XE_INB(XE_TPR)) < scp->tx_tpr) /* Update packet count */ 852 sent = (0xff - scp->tx_tpr) + new_tpr; /* TPR rolled over */ 853 else 854 sent = new_tpr - scp->tx_tpr; 855 856 if (sent > 0) { /* Packets sent since last interrupt */ 857 scp->tx_tpr = new_tpr; 858 scp->tx_queued -= sent; 859 ifp->if_opackets += sent; 860 ifp->if_collisions += scp->tx_collisions; 861 862 /* 863 * Collision stats are a PITA. If multiples frames have been sent, we 864 * distribute any outstanding collision count equally amongst them. 865 * However, if we're missing interrupts we're quite likely to also 866 * miss some collisions; thus the total count will be off anyway. 867 * Likewise, if we miss a frame dropped due to excessive collisions 868 * any outstanding collisions count will be held against the next 869 * frame to be successfully sent. Hopefully it averages out in the 870 * end! 871 * XXX - This will screw up if tx_collisions/sent > 14. FIX IT! 872 */ 873 switch (scp->tx_collisions) { 874 case 0: 875 break; 876 case 1: 877 scp->mibdata.dot3StatsSingleCollisionFrames++; 878 scp->mibdata.dot3StatsCollFrequencies[0]++; 879 break; 880 default: 881 if (sent == 1) { 882 scp->mibdata.dot3StatsMultipleCollisionFrames++; 883 scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++; 884 } 885 else { /* Distribute across multiple frames */ 886 scp->mibdata.dot3StatsMultipleCollisionFrames += sent; 887 scp->mibdata. 888 dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent; 889 scp->mibdata. 890 dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent; 891 } 892 } 893 scp->tx_collisions = 0; 894 } 895 ifp->if_timer = 0; 896 ifp->if_flags &= ~IFF_OACTIVE; 897 } 898 if (txs & 0x0002) { /* Excessive collisions (packet dropped) */ 899 ifp->if_collisions += 16; 900 ifp->if_oerrors++; 901 scp->tx_collisions = 0; 902 scp->mibdata.dot3StatsExcessiveCollisions++; 903 scp->mibdata.dot3StatsMultipleCollisionFrames++; 904 scp->mibdata.dot3StatsCollFrequencies[15]++; 905 XE_OUTB(XE_CR, XE_CR_RESTART_TX); 906 } 907 if (txs & 0x0040) /* Transmit aborted -- probably collisions */ 908 scp->tx_collisions++; 909 910 911 /* 912 * Handle receive interrupts 913 */ 914 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) { 915 916 if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) { 917 struct ether_header *ehp; 918 struct mbuf *mbp; 919 u_int16_t len; 920 921 len = XE_INW(XE_RBC); 922 923 if (len == 0) 924 continue; 925 926 #if 0 927 /* 928 * Limit the amount of time we spend in this loop, dropping packets if 929 * necessary. The Linux code does this with considerably more 930 * finesse, adjusting the threshold dynamically. 931 */ 932 if ((rx_bytes += len) > 22000) { 933 ifp->if_iqdrops++; 934 scp->mibData.dot3StatsMissedFrames++; 935 XE_OUTW(XE_DO, 0x8000); 936 continue; 937 } 938 #endif 939 940 if (len & 0x01) 941 len++; 942 943 MGETHDR(mbp, MB_DONTWAIT, MT_DATA); /* Allocate a header mbuf */ 944 if (mbp != NULL) { 945 mbp->m_pkthdr.rcvif = ifp; 946 mbp->m_pkthdr.len = mbp->m_len = len; 947 948 /* 949 * If the mbuf header isn't big enough for the packet, attach an 950 * mbuf cluster to hold it. The +2 is to allow for the nasty little 951 * alignment hack below. 952 */ 953 if (len + 2 > MHLEN) { 954 MCLGET(mbp, MB_DONTWAIT); 955 if ((mbp->m_flags & M_EXT) == 0) { 956 m_freem(mbp); 957 mbp = NULL; 958 } 959 } 960 } 961 962 if (mbp != NULL) { 963 /* 964 * The Ethernet header is 14 bytes long; thus the actual packet data 965 * won't be 32-bit aligned when it's dumped into the mbuf. We 966 * offset everything by 2 bytes to fix this. Apparently the 967 * alignment is important for NFS, damn its eyes. 968 */ 969 mbp->m_data += 2; 970 ehp = mtod(mbp, struct ether_header *); 971 972 /* 973 * Now get the packet, including the Ethernet header and trailer (?) 974 * We use programmed I/O, because we don't know how to do shared 975 * memory with these cards. So yes, it's real slow, and heavy on 976 * the interrupts (CPU on my P150 maxed out at ~950KBps incoming). 977 */ 978 if (scp->srev == 0) { /* Workaround a bug in old cards */ 979 u_short rhs; 980 981 XE_SELECT_PAGE(5); 982 rhs = XE_INW(XE_RHSA); 983 XE_SELECT_PAGE(0); 984 985 rhs += 3; /* Skip control info */ 986 987 if (rhs >= 0x8000) 988 rhs = 0; 989 990 if (rhs + len > 0x8000) { 991 int i; 992 993 /* 994 * XXX - This i-- seems very wrong, but it's what the Linux guys 995 * XXX - do. Need someone with an old CE2 to test this for me. 996 * XXX - 99/3/28: Changed the first i-- to an i++, maybe that'll 997 * XXX - fix it? It seems as though the previous version would 998 * XXX - have caused an infinite loop (what, another one?). 999 */ 1000 for (i = 0; i < len; i++, rhs++) { 1001 ((char *)ehp)[i] = XE_INB(XE_EDP); 1002 if (rhs == 0x8000) { 1003 rhs = 0; 1004 i--; 1005 } 1006 } 1007 } 1008 else 1009 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, 1010 (u_int16_t *) ehp, len >> 1); 1011 } 1012 else 1013 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, 1014 (u_int16_t *) ehp, len >> 1); 1015 1016 /* Deliver packet to upper layers */ 1017 if (mbp != NULL) { 1018 mbp->m_pkthdr.len = mbp->m_len = len; 1019 (*ifp->if_input)(ifp, mbp); /* Send the packet on its way */ 1020 ifp->if_ipackets++; /* Success! */ 1021 } 1022 XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */ 1023 } 1024 } 1025 else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */ 1026 scp->mibdata.dot3StatsFrameTooLongs++; 1027 ifp->if_ierrors++; 1028 } 1029 else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */ 1030 scp->mibdata.dot3StatsFCSErrors++; 1031 ifp->if_ierrors++; 1032 } 1033 else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */ 1034 scp->mibdata.dot3StatsAlignmentErrors++; 1035 ifp->if_ierrors++; 1036 } 1037 } 1038 if (rxs & 0x10) { /* Receiver overrun */ 1039 scp->mibdata.dot3StatsInternalMacReceiveErrors++; 1040 ifp->if_ierrors++; 1041 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN); 1042 } 1043 } 1044 1045 XE_SELECT_PAGE(psr); /* Restore saved page */ 1046 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */ 1047 1048 /* Could force an int here, instead of dropping packets? */ 1049 /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */ 1050 1051 return; 1052 } 1053 1054 1055 /* 1056 * Device timeout/watchdog routine. Called automatically if we queue a packet 1057 * for transmission but don't get an interrupt within a specified timeout 1058 * (usually 5 seconds). When this happens we assume the worst and reset the 1059 * card. 1060 */ 1061 static void 1062 xe_watchdog(struct ifnet *ifp) { 1063 struct xe_softc *scp = ifp->if_softc; 1064 1065 device_printf(scp->dev, "watchdog timeout; resetting card\n"); 1066 scp->tx_timeouts++; 1067 ifp->if_oerrors += scp->tx_queued; 1068 xe_stop(scp); 1069 xe_hard_reset(scp); 1070 xe_setmedia(scp); 1071 xe_init(scp); 1072 } 1073 1074 1075 /* 1076 * Change media selection. 1077 */ 1078 static int 1079 xe_media_change(struct ifnet *ifp) { 1080 struct xe_softc *scp = ifp->if_softc; 1081 1082 #ifdef XE_DEBUG 1083 printf("%s: media_change\n", ifp->if_xname); 1084 #endif 1085 1086 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER) 1087 return(EINVAL); 1088 1089 /* 1090 * Some card/media combos aren't always possible -- filter those out here. 1091 */ 1092 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO || 1093 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok) 1094 return (EINVAL); 1095 1096 xe_setmedia(scp); 1097 1098 return 0; 1099 } 1100 1101 1102 /* 1103 * Return current media selection. 1104 */ 1105 static void 1106 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) { 1107 1108 #ifdef XE_DEBUG 1109 printf("%s: media_status\n", ifp->if_xname); 1110 #endif 1111 1112 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media; 1113 1114 return; 1115 } 1116 1117 1118 /* 1119 * Select active media. 1120 */ 1121 static void xe_setmedia(void *xscp) { 1122 struct xe_softc *scp = xscp; 1123 u_int16_t bmcr, bmsr, anar, lpar; 1124 1125 #ifdef XE_DEBUG 1126 device_printf(scp->dev, "setmedia\n"); 1127 #endif 1128 1129 /* Cancel any pending timeout */ 1130 callout_stop(&scp->xe_timer); 1131 xe_disable_intr(scp); 1132 1133 /* Select media */ 1134 scp->media = IFM_ETHER; 1135 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) { 1136 1137 case IFM_AUTO: /* Autoselect media */ 1138 scp->media = IFM_ETHER|IFM_AUTO; 1139 1140 /* 1141 * Autoselection is really awful. It goes something like this: 1142 * 1143 * Wait until the transmitter goes idle (2sec timeout). 1144 * Reset card 1145 * IF a 100Mbit PHY exists 1146 * Start NWAY autonegotiation (3.5sec timeout) 1147 * IF that succeeds 1148 * Select 100baseTX or 10baseT, whichever was detected 1149 * ELSE 1150 * Reset card 1151 * IF a 100Mbit PHY exists 1152 * Try to force a 100baseTX link (3sec timeout) 1153 * IF that succeeds 1154 * Select 100baseTX 1155 * ELSE 1156 * Disable the PHY 1157 * ENDIF 1158 * ENDIF 1159 * ENDIF 1160 * ENDIF 1161 * IF nothing selected so far 1162 * IF a 100Mbit PHY exists 1163 * Select 10baseT 1164 * ELSE 1165 * Select 10baseT or 10base2, whichever is connected 1166 * ENDIF 1167 * ENDIF 1168 */ 1169 switch (scp->autoneg_status) { 1170 1171 case XE_AUTONEG_NONE: 1172 #if XE_DEBUG > 1 1173 device_printf(scp->dev, "Waiting for idle transmitter\n"); 1174 #endif 1175 scp->arpcom.ac_if.if_flags |= IFF_OACTIVE; 1176 scp->autoneg_status = XE_AUTONEG_WAITING; 1177 callout_reset(&scp->xe_timer, hz * 2, xe_setmedia, scp); 1178 return; 1179 1180 case XE_AUTONEG_WAITING: 1181 xe_soft_reset(scp); 1182 if (scp->phy_ok) { 1183 #if XE_DEBUG > 1 1184 device_printf(scp->dev, "Starting autonegotiation\n"); 1185 #endif 1186 bmcr = xe_phy_readreg(scp, PHY_BMCR); 1187 bmcr &= ~(PHY_BMCR_AUTONEGENBL); 1188 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1189 anar = xe_phy_readreg(scp, PHY_ANAR); 1190 anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL); 1191 anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF; 1192 xe_phy_writereg(scp, PHY_ANAR, anar); 1193 bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; 1194 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1195 scp->autoneg_status = XE_AUTONEG_STARTED; 1196 callout_reset(&scp->xe_timer, hz * 7 / 2, xe_setmedia, scp); 1197 return; 1198 } 1199 else { 1200 scp->autoneg_status = XE_AUTONEG_FAIL; 1201 } 1202 break; 1203 1204 case XE_AUTONEG_STARTED: 1205 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1206 lpar = xe_phy_readreg(scp, PHY_LPAR); 1207 if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) { 1208 #if XE_DEBUG > 1 1209 device_printf(scp->dev, "Autonegotiation complete!\n"); 1210 #endif 1211 /* 1212 * XXX - Shouldn't have to do this, but (on my hub at least) the 1213 * XXX - transmitter won't work after a successful autoneg. So we see 1214 * XXX - what the negotiation result was and force that mode. I'm 1215 * XXX - sure there is an easy fix for this. 1216 */ 1217 if (lpar & PHY_LPAR_100BTXHALF) { 1218 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1219 XE_MII_DUMP(scp); 1220 XE_SELECT_PAGE(2); 1221 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1222 scp->media = IFM_ETHER|IFM_100_TX; 1223 scp->autoneg_status = XE_AUTONEG_NONE; 1224 } 1225 else { 1226 /* 1227 * XXX - Bit of a hack going on in here. 1228 * XXX - This is derived from Ken Hughes patch to the Linux driver 1229 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B 1230 * XXX - cards. What's a CE3B and how's it differ from a plain CE3? 1231 * XXX - these are the things we need to find out. 1232 */ 1233 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1234 XE_SELECT_PAGE(2); 1235 /* BEGIN HACK */ 1236 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1237 XE_SELECT_PAGE(0x42); 1238 XE_OUTB(XE_SWC1, 0x80); 1239 scp->media = IFM_ETHER|IFM_10_T; 1240 scp->autoneg_status = XE_AUTONEG_NONE; 1241 /* END HACK */ 1242 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */ 1243 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/ 1244 } 1245 } 1246 else { 1247 #if XE_DEBUG > 1 1248 device_printf(scp->dev, "Autonegotiation failed; trying 100baseTX\n"); 1249 #endif 1250 XE_MII_DUMP(scp); 1251 xe_soft_reset(scp); 1252 if (scp->phy_ok) { 1253 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1254 scp->autoneg_status = XE_AUTONEG_100TX; 1255 callout_reset(&scp->xe_timer, hz * 3, xe_setmedia, scp); 1256 return; 1257 } 1258 else { 1259 scp->autoneg_status = XE_AUTONEG_FAIL; 1260 } 1261 } 1262 break; 1263 1264 case XE_AUTONEG_100TX: 1265 (void)xe_phy_readreg(scp, PHY_BMSR); 1266 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1267 if (bmsr & PHY_BMSR_LINKSTAT) { 1268 #if XE_DEBUG > 1 1269 device_printf(scp->dev, "Got 100baseTX link!\n"); 1270 #endif 1271 XE_MII_DUMP(scp); 1272 XE_SELECT_PAGE(2); 1273 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1274 scp->media = IFM_ETHER|IFM_100_TX; 1275 scp->autoneg_status = XE_AUTONEG_NONE; 1276 } 1277 else { 1278 #if XE_DEBUG > 1 1279 device_printf(scp->dev, "Autonegotiation failed; disabling PHY\n"); 1280 #endif 1281 XE_MII_DUMP(scp); 1282 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1283 XE_SELECT_PAGE(2); 1284 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */ 1285 scp->autoneg_status = XE_AUTONEG_FAIL; 1286 } 1287 break; 1288 } 1289 1290 /* 1291 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then 1292 * either autonegotiation failed, or never got started to begin with. In 1293 * either case, select a suitable 10Mbit media and hope it works. We 1294 * don't need to reset the card again, since it will have been done 1295 * already by the big switch above. 1296 */ 1297 if (scp->autoneg_status == XE_AUTONEG_FAIL) { 1298 #if XE_DEBUG > 1 1299 device_printf(scp->dev, "Selecting 10baseX\n"); 1300 #endif 1301 if (scp->mohawk) { 1302 XE_SELECT_PAGE(0x42); 1303 XE_OUTB(XE_SWC1, 0x80); 1304 scp->media = IFM_ETHER|IFM_10_T; 1305 scp->autoneg_status = XE_AUTONEG_NONE; 1306 } 1307 else { 1308 XE_SELECT_PAGE(4); 1309 XE_OUTB(XE_GPR0, 4); 1310 DELAY(50000); 1311 XE_SELECT_PAGE(0x42); 1312 XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0); 1313 scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2); 1314 scp->autoneg_status = XE_AUTONEG_NONE; 1315 } 1316 } 1317 break; 1318 1319 1320 /* 1321 * If a specific media has been requested, we just reset the card and 1322 * select it (one small exception -- if 100baseTX is requested by there is 1323 * no PHY, we fall back to 10baseT operation). 1324 */ 1325 case IFM_100_TX: /* Force 100baseTX */ 1326 xe_soft_reset(scp); 1327 if (scp->phy_ok) { 1328 #if XE_DEBUG > 1 1329 device_printf(scp->dev, "Selecting 100baseTX\n"); 1330 #endif 1331 XE_SELECT_PAGE(0x42); 1332 XE_OUTB(XE_SWC1, 0); 1333 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1334 XE_SELECT_PAGE(2); 1335 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1336 scp->media |= IFM_100_TX; 1337 break; 1338 } 1339 /* FALLTHROUGH */ 1340 1341 case IFM_10_T: /* Force 10baseT */ 1342 xe_soft_reset(scp); 1343 #if XE_DEBUG > 1 1344 device_printf(scp->dev, "Selecting 10baseT\n"); 1345 #endif 1346 if (scp->phy_ok) { 1347 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1348 XE_SELECT_PAGE(2); 1349 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */ 1350 } 1351 XE_SELECT_PAGE(0x42); 1352 XE_OUTB(XE_SWC1, 0x80); 1353 scp->media |= IFM_10_T; 1354 break; 1355 1356 case IFM_10_2: 1357 xe_soft_reset(scp); 1358 #if XE_DEBUG > 1 1359 device_printf(scp->dev, "Selecting 10base2\n"); 1360 #endif 1361 XE_SELECT_PAGE(0x42); 1362 XE_OUTB(XE_SWC1, 0xc0); 1363 scp->media |= IFM_10_2; 1364 break; 1365 } 1366 1367 1368 /* 1369 * Finally, the LEDs are set to match whatever media was chosen and the 1370 * transmitter is unblocked. 1371 */ 1372 #if XE_DEBUG > 1 1373 device_printf(scp->dev, "Setting LEDs\n"); 1374 #endif 1375 XE_SELECT_PAGE(2); 1376 switch (IFM_SUBTYPE(scp->media)) { 1377 case IFM_100_TX: 1378 case IFM_10_T: 1379 XE_OUTB(XE_LED, 0x3b); 1380 if (scp->dingo) 1381 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */ 1382 break; 1383 1384 case IFM_10_2: 1385 XE_OUTB(XE_LED, 0x3a); 1386 break; 1387 } 1388 1389 /* Restart output? */ 1390 scp->ifp->if_flags &= ~IFF_OACTIVE; 1391 xe_init(scp); 1392 } 1393 1394 1395 /* 1396 * Hard reset (power cycle) the card. 1397 */ 1398 static void 1399 xe_hard_reset(struct xe_softc *scp) { 1400 int s; 1401 1402 #ifdef XE_DEBUG 1403 device_printf(scp->dev, "hard_reset\n"); 1404 #endif 1405 1406 s = splimp(); 1407 1408 /* 1409 * Power cycle the card. 1410 */ 1411 XE_SELECT_PAGE(4); 1412 XE_OUTB(XE_GPR1, 0); /* Power off */ 1413 DELAY(40000); 1414 1415 if (scp->mohawk) 1416 XE_OUTB(XE_GPR1, 1); /* And back on again */ 1417 else 1418 XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */ 1419 DELAY(40000); 1420 XE_SELECT_PAGE(0); 1421 1422 (void)splx(s); 1423 } 1424 1425 1426 /* 1427 * Soft reset the card. Also makes sure that the ML6692 and 10Mbit controller 1428 * are powered up, sets the silicon revision number in softc, disables 1429 * interrupts and checks for the prescence of a 100Mbit PHY. This should 1430 * leave us in a position where we can access the PHY and do media 1431 * selection. The function imposes a 0.5s delay while the hardware powers up. 1432 */ 1433 static void 1434 xe_soft_reset(struct xe_softc *scp) { 1435 int s; 1436 1437 #ifdef XE_DEBUG 1438 device_printf(scp->dev, "soft_reset\n"); 1439 #endif 1440 1441 s = splimp(); 1442 1443 /* 1444 * Reset the card, (again). 1445 */ 1446 XE_SELECT_PAGE(0); 1447 XE_OUTB(XE_CR, XE_CR_SOFT_RESET); 1448 DELAY(40000); 1449 XE_OUTB(XE_CR, 0); 1450 DELAY(40000); 1451 1452 if (scp->mohawk) { 1453 /* 1454 * set GP1 and GP2 as outputs (bits 2 & 3) 1455 * set GP1 low to power on the ML6692 (bit 0) 1456 * set GP2 high to power on the 10Mhz chip (bit 1) 1457 */ 1458 XE_SELECT_PAGE(4); 1459 XE_OUTB(XE_GPR0, 0x0e); 1460 } 1461 1462 /* 1463 * Wait for everything to wake up. 1464 */ 1465 DELAY(500000); 1466 1467 /* 1468 * Get silicon revision number. 1469 */ 1470 XE_SELECT_PAGE(4); 1471 if (scp->mohawk) 1472 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4; 1473 else 1474 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4; 1475 #ifdef XE_DEBUG 1476 device_printf(scp->dev, "silicon revision = %d\n", scp->srev); 1477 #endif 1478 1479 /* 1480 * Shut off interrupts. 1481 */ 1482 xe_disable_intr(scp); 1483 1484 /* 1485 * Check for PHY. 1486 */ 1487 if (scp->mohawk) { 1488 scp->phy_ok = xe_mii_init(scp); 1489 } 1490 1491 XE_SELECT_PAGE(0); 1492 1493 (void)splx(s); 1494 } 1495 1496 1497 /* 1498 * Take interface offline. This is done by powering down the device, which I 1499 * assume means just shutting down the transceiver and Ethernet logic. This 1500 * requires a _hard_ reset to recover from, as we need to power up again. 1501 */ 1502 static void 1503 xe_stop(struct xe_softc *scp) { 1504 int s; 1505 1506 #ifdef XE_DEBUG 1507 device_printf(scp->dev, "stop\n"); 1508 #endif 1509 1510 s = splimp(); 1511 1512 /* 1513 * Shut off interrupts. 1514 */ 1515 xe_disable_intr(scp); 1516 1517 /* 1518 * Power down. 1519 */ 1520 XE_SELECT_PAGE(4); 1521 XE_OUTB(XE_GPR1, 0); 1522 XE_SELECT_PAGE(0); 1523 1524 /* 1525 * ~IFF_RUNNING == interface down. 1526 */ 1527 scp->ifp->if_flags &= ~IFF_RUNNING; 1528 scp->ifp->if_flags &= ~IFF_OACTIVE; 1529 scp->ifp->if_timer = 0; 1530 1531 (void)splx(s); 1532 } 1533 1534 1535 /* 1536 * Enable Ethernet interrupts from the card. 1537 */ 1538 static void 1539 xe_enable_intr(struct xe_softc *scp) { 1540 #ifdef XE_DEBUG 1541 device_printf(scp->dev, "enable_intr\n"); 1542 #endif 1543 1544 XE_SELECT_PAGE(1); 1545 XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */ 1546 XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */ 1547 DELAY(1); 1548 1549 XE_SELECT_PAGE(0); 1550 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */ 1551 if (scp->modem && !scp->dingo) { /* This bit is just magic */ 1552 if (!(XE_INB(0x10) & 0x01)) { 1553 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */ 1554 } 1555 } 1556 } 1557 1558 1559 /* 1560 * Disable all Ethernet interrupts from the card. 1561 */ 1562 static void 1563 xe_disable_intr(struct xe_softc *scp) { 1564 #ifdef XE_DEBUG 1565 device_printf(scp->dev, "disable_intr\n"); 1566 #endif 1567 1568 XE_SELECT_PAGE(0); 1569 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 1570 if (scp->modem && !scp->dingo) { /* More magic (does this work?) */ 1571 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */ 1572 } 1573 1574 XE_SELECT_PAGE(1); 1575 XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */ 1576 XE_OUTB(XE_IMR1, 0); 1577 XE_SELECT_PAGE(0); 1578 } 1579 1580 1581 /* 1582 * Set up multicast filter and promiscuous mode 1583 */ 1584 static void 1585 xe_setmulti(struct xe_softc *scp) { 1586 struct ifnet *ifp; 1587 struct ifmultiaddr *maddr; 1588 int count; 1589 1590 ifp = &scp->arpcom.ac_if; 1591 maddr = ifp->if_multiaddrs.lh_first; 1592 1593 /* Get length of multicast list */ 1594 for (count = 0; maddr != NULL; maddr = maddr->ifma_link.le_next, count++); 1595 1596 if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) { 1597 /* 1598 * Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are 1599 * set, or if we have been asked to deal with more than 9 multicast 1600 * addresses. To do this: set MPE and PME in SWC1 1601 */ 1602 XE_SELECT_PAGE(0x42); 1603 XE_OUTB(XE_SWC1, 0x06); 1604 } 1605 else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) { 1606 /* 1607 * Program the filters for up to 9 addresses 1608 */ 1609 XE_SELECT_PAGE(0x42); 1610 XE_OUTB(XE_SWC1, 0x01); 1611 XE_SELECT_PAGE(0x40); 1612 XE_OUTB(XE_CMD0, XE_CMD0_OFFLINE); 1613 /*xe_reg_dump(scp);*/ 1614 xe_setaddrs(scp); 1615 /*xe_reg_dump(scp);*/ 1616 XE_SELECT_PAGE(0x40); 1617 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); 1618 } 1619 else { 1620 /* 1621 * No multicast operation (default) 1622 */ 1623 XE_SELECT_PAGE(0x42); 1624 XE_OUTB(XE_SWC1, 0); 1625 } 1626 XE_SELECT_PAGE(0); 1627 } 1628 1629 1630 /* 1631 * Set up all on-chip addresses (for multicast). AFAICS, there are 10 1632 * of these things; the first is our MAC address, the other 9 are mcast 1633 * addresses, padded with the MAC address if there aren't enough. 1634 * XXX - This doesn't work right, but I'm not sure why yet. We seem to be 1635 * XXX - doing much the same as the Linux code, which is weird enough that 1636 * XXX - it's probably right (despite my earlier comments to the contrary). 1637 */ 1638 static void 1639 xe_setaddrs(struct xe_softc *scp) { 1640 struct ifmultiaddr *maddr; 1641 u_int8_t *addr; 1642 u_int8_t page, slot, byte, i; 1643 1644 maddr = scp->arpcom.ac_if.if_multiaddrs.lh_first; 1645 1646 XE_SELECT_PAGE(page = 0x50); 1647 1648 for (slot = 0, byte = 8; slot < 10; slot++) { 1649 1650 if (slot == 0) 1651 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1652 else { 1653 while (maddr != NULL && maddr->ifma_addr->sa_family != AF_LINK) 1654 maddr = maddr->ifma_link.le_next; 1655 if (maddr != NULL) 1656 addr = LLADDR((struct sockaddr_dl *)maddr->ifma_addr); 1657 else 1658 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1659 } 1660 1661 for (i = 0; i < 6; i++, byte++) { 1662 #if XE_DEBUG > 2 1663 if (i) 1664 printf(":%x", addr[i]); 1665 else 1666 device_printf(scp->dev, "individual addresses %d: %x", slot, addr[0]); 1667 #endif 1668 1669 if (byte > 15) { 1670 page++; 1671 byte = 8; 1672 XE_SELECT_PAGE(page); 1673 } 1674 1675 if (scp->mohawk) 1676 XE_OUTB(byte, addr[5 - i]); 1677 else 1678 XE_OUTB(byte, addr[i]); 1679 } 1680 #if XE_DEBUG > 2 1681 printf("\n"); 1682 #endif 1683 } 1684 1685 XE_SELECT_PAGE(0); 1686 } 1687 1688 1689 /* 1690 * Write an outgoing packet to the card using programmed I/O. 1691 */ 1692 static int 1693 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) { 1694 struct mbuf *mbp2; 1695 u_int16_t len, pad, free, ok; 1696 u_int8_t *data; 1697 u_int8_t savebyte[2], wantbyte; 1698 1699 /* Get total packet length */ 1700 for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next); 1701 1702 /* Packets < minimum length may need to be padded out */ 1703 pad = 0; 1704 if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) { 1705 pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1; 1706 len = ETHER_MIN_LEN - ETHER_CRC_LEN; 1707 } 1708 1709 /* Check transmit buffer space */ 1710 XE_SELECT_PAGE(0); 1711 XE_OUTW(XE_TRS, len+2); 1712 free = XE_INW(XE_TSO); 1713 ok = free & 0x8000; 1714 free &= 0x7fff; 1715 if (free <= len + 2) 1716 return 1; 1717 1718 /* Send packet length to card */ 1719 XE_OUTW(XE_EDP, len); 1720 1721 /* 1722 * Write packet to card using PIO (code stolen from the ed driver) 1723 */ 1724 wantbyte = 0; 1725 while (mbp != NULL) { 1726 len = mbp->m_len; 1727 if (len > 0) { 1728 data = mtod(mbp, caddr_t); 1729 if (wantbyte) { /* Finish the last word */ 1730 savebyte[1] = *data; 1731 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1732 data++; 1733 len--; 1734 wantbyte = 0; 1735 } 1736 if (len > 1) { /* Output contiguous words */ 1737 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data, 1738 len >> 1); 1739 data += len & ~1; 1740 len &= 1; 1741 } 1742 if (len == 1) { /* Save last byte, if necessary */ 1743 savebyte[0] = *data; 1744 wantbyte = 1; 1745 } 1746 } 1747 mbp = mbp->m_next; 1748 } 1749 if (wantbyte) /* Last byte for odd-length packets */ 1750 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1751 1752 /* 1753 * For CE3 cards, just tell 'em to send -- apparently the card will pad out 1754 * short packets with random cruft. Otherwise, write nonsense words to fill 1755 * out the packet. I guess it is then sent automatically (?) 1756 */ 1757 if (scp->mohawk) 1758 XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR); 1759 else 1760 while (pad > 0) { 1761 XE_OUTW(XE_EDP, 0xdead); 1762 pad--; 1763 } 1764 1765 return 0; 1766 } 1767 1768 #if 0 1769 /* 1770 * Compute the 32-bit Ethernet CRC for the given buffer. 1771 */ 1772 static u_int32_t 1773 xe_compute_crc(u_int8_t *data, int len) { 1774 u_int32_t crc = 0xffffffff; 1775 u_int32_t poly = 0x04c11db6; 1776 u_int8_t current, crc31, bit; 1777 int i, k; 1778 1779 for (i = 0; i < len; i++) { 1780 current = data[i]; 1781 for (k = 1; k <= 8; k++) { 1782 if (crc & 0x80000000) { 1783 crc31 = 0x01; 1784 } 1785 else { 1786 crc31 = 0; 1787 } 1788 bit = crc31 ^ (current & 0x01); 1789 crc <<= 1; 1790 current >>= 1; 1791 if (bit) { 1792 crc = (crc ^ poly)|1; 1793 } 1794 } 1795 } 1796 return crc; 1797 } 1798 1799 1800 /* 1801 * Convert a CRC into an index into the multicast hash table. What we do is 1802 * take the most-significant 6 bits of the CRC, reverse them, and use that as 1803 * the bit number in the hash table. Bits 5:3 of the result give the byte 1804 * within the table (0-7); bits 2:0 give the bit number within that byte (also 1805 * 0-7), ie. the number of shifts needed to get it into the lsb position. 1806 */ 1807 static int 1808 xe_compute_hashbit(u_int32_t crc) { 1809 u_int8_t hashbit = 0; 1810 int i; 1811 1812 for (i = 0; i < 6; i++) { 1813 hashbit >>= 1; 1814 if (crc & 0x80000000) { 1815 hashbit &= 0x80; 1816 } 1817 crc <<= 1; 1818 } 1819 return (hashbit >> 2); 1820 } 1821 1822 #endif 1823 1824 1825 1826 /************************************************************** 1827 * * 1828 * M I I F U N C T I O N S * 1829 * * 1830 **************************************************************/ 1831 1832 /* 1833 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't 1834 * seem to work any better than the xirc2_ps stuff, but it's cleaner code. 1835 * XXX - this stuff shouldn't be here. It should all be abstracted off to 1836 * XXX - some kind of common MII-handling code, shared by all drivers. But 1837 * XXX - that's a whole other mission. 1838 */ 1839 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x)) 1840 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x)) 1841 1842 1843 /* 1844 * Sync the PHYs by setting data bit and strobing the clock 32 times. 1845 */ 1846 static void 1847 xe_mii_sync(struct xe_softc *scp) { 1848 int i; 1849 1850 XE_SELECT_PAGE(2); 1851 XE_MII_SET(XE_MII_DIR|XE_MII_WRD); 1852 1853 for (i = 0; i < 32; i++) { 1854 XE_MII_SET(XE_MII_CLK); 1855 DELAY(1); 1856 XE_MII_CLR(XE_MII_CLK); 1857 DELAY(1); 1858 } 1859 } 1860 1861 1862 /* 1863 * Look for a MII-compliant PHY. If we find one, reset it. 1864 */ 1865 static int 1866 xe_mii_init(struct xe_softc *scp) { 1867 u_int16_t status; 1868 1869 status = xe_phy_readreg(scp, PHY_BMSR); 1870 if ((status & 0xff00) != 0x7800) { 1871 #if XE_DEBUG > 1 1872 device_printf(scp->dev, "no PHY found, %0x\n", status); 1873 #endif 1874 return 0; 1875 } 1876 else { 1877 #if XE_DEBUG > 1 1878 device_printf(scp->dev, "PHY OK!\n"); 1879 #endif 1880 1881 /* Reset the PHY */ 1882 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET); 1883 DELAY(500); 1884 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET); 1885 XE_MII_DUMP(scp); 1886 return 1; 1887 } 1888 } 1889 1890 1891 /* 1892 * Clock a series of bits through the MII. 1893 */ 1894 static void 1895 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) { 1896 int i; 1897 1898 XE_SELECT_PAGE(2); 1899 XE_MII_CLR(XE_MII_CLK); 1900 1901 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 1902 if (bits & i) { 1903 XE_MII_SET(XE_MII_WRD); 1904 } else { 1905 XE_MII_CLR(XE_MII_WRD); 1906 } 1907 DELAY(1); 1908 XE_MII_CLR(XE_MII_CLK); 1909 DELAY(1); 1910 XE_MII_SET(XE_MII_CLK); 1911 } 1912 } 1913 1914 1915 /* 1916 * Read an PHY register through the MII. 1917 */ 1918 static int 1919 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) { 1920 int i, ack, s; 1921 1922 s = splimp(); 1923 1924 /* 1925 * Set up frame for RX. 1926 */ 1927 frame->mii_stdelim = XE_MII_STARTDELIM; 1928 frame->mii_opcode = XE_MII_READOP; 1929 frame->mii_turnaround = 0; 1930 frame->mii_data = 0; 1931 1932 XE_SELECT_PAGE(2); 1933 XE_OUTB(XE_GPR2, 0); 1934 1935 /* 1936 * Turn on data xmit. 1937 */ 1938 XE_MII_SET(XE_MII_DIR); 1939 1940 xe_mii_sync(scp); 1941 1942 /* 1943 * Send command/address info. 1944 */ 1945 xe_mii_send(scp, frame->mii_stdelim, 2); 1946 xe_mii_send(scp, frame->mii_opcode, 2); 1947 xe_mii_send(scp, frame->mii_phyaddr, 5); 1948 xe_mii_send(scp, frame->mii_regaddr, 5); 1949 1950 /* Idle bit */ 1951 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD)); 1952 DELAY(1); 1953 XE_MII_SET(XE_MII_CLK); 1954 DELAY(1); 1955 1956 /* Turn off xmit. */ 1957 XE_MII_CLR(XE_MII_DIR); 1958 1959 /* Check for ack */ 1960 XE_MII_CLR(XE_MII_CLK); 1961 DELAY(1); 1962 ack = XE_INB(XE_GPR2) & XE_MII_RDD; 1963 XE_MII_SET(XE_MII_CLK); 1964 DELAY(1); 1965 1966 /* 1967 * Now try reading data bits. If the ack failed, we still 1968 * need to clock through 16 cycles to keep the PHY(s) in sync. 1969 */ 1970 if (ack) { 1971 for(i = 0; i < 16; i++) { 1972 XE_MII_CLR(XE_MII_CLK); 1973 DELAY(1); 1974 XE_MII_SET(XE_MII_CLK); 1975 DELAY(1); 1976 } 1977 goto fail; 1978 } 1979 1980 for (i = 0x8000; i; i >>= 1) { 1981 XE_MII_CLR(XE_MII_CLK); 1982 DELAY(1); 1983 if (!ack) { 1984 if (XE_INB(XE_GPR2) & XE_MII_RDD) 1985 frame->mii_data |= i; 1986 DELAY(1); 1987 } 1988 XE_MII_SET(XE_MII_CLK); 1989 DELAY(1); 1990 } 1991 1992 fail: 1993 1994 XE_MII_CLR(XE_MII_CLK); 1995 DELAY(1); 1996 XE_MII_SET(XE_MII_CLK); 1997 DELAY(1); 1998 1999 splx(s); 2000 2001 if (ack) 2002 return(1); 2003 return(0); 2004 } 2005 2006 2007 /* 2008 * Write to a PHY register through the MII. 2009 */ 2010 static int 2011 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) { 2012 int s; 2013 2014 s = splimp(); 2015 2016 /* 2017 * Set up frame for TX. 2018 */ 2019 frame->mii_stdelim = XE_MII_STARTDELIM; 2020 frame->mii_opcode = XE_MII_WRITEOP; 2021 frame->mii_turnaround = XE_MII_TURNAROUND; 2022 2023 XE_SELECT_PAGE(2); 2024 2025 /* 2026 * Turn on data output. 2027 */ 2028 XE_MII_SET(XE_MII_DIR); 2029 2030 xe_mii_sync(scp); 2031 2032 xe_mii_send(scp, frame->mii_stdelim, 2); 2033 xe_mii_send(scp, frame->mii_opcode, 2); 2034 xe_mii_send(scp, frame->mii_phyaddr, 5); 2035 xe_mii_send(scp, frame->mii_regaddr, 5); 2036 xe_mii_send(scp, frame->mii_turnaround, 2); 2037 xe_mii_send(scp, frame->mii_data, 16); 2038 2039 /* Idle bit. */ 2040 XE_MII_SET(XE_MII_CLK); 2041 DELAY(1); 2042 XE_MII_CLR(XE_MII_CLK); 2043 DELAY(1); 2044 2045 /* 2046 * Turn off xmit. 2047 */ 2048 XE_MII_CLR(XE_MII_DIR); 2049 2050 splx(s); 2051 2052 return(0); 2053 } 2054 2055 2056 /* 2057 * Read a register from the PHY. 2058 */ 2059 static u_int16_t 2060 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) { 2061 struct xe_mii_frame frame; 2062 2063 bzero((char *)&frame, sizeof(frame)); 2064 2065 frame.mii_phyaddr = 0; 2066 frame.mii_regaddr = reg; 2067 xe_mii_readreg(scp, &frame); 2068 2069 return(frame.mii_data); 2070 } 2071 2072 2073 /* 2074 * Write to a PHY register. 2075 */ 2076 static void 2077 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) { 2078 struct xe_mii_frame frame; 2079 2080 bzero((char *)&frame, sizeof(frame)); 2081 2082 frame.mii_phyaddr = 0; 2083 frame.mii_regaddr = reg; 2084 frame.mii_data = data; 2085 xe_mii_writereg(scp, &frame); 2086 2087 return; 2088 } 2089 2090 2091 #ifdef XE_DEBUG 2092 /* 2093 * A bit of debugging code. 2094 */ 2095 static void 2096 xe_mii_dump(struct xe_softc *scp) { 2097 int i, s; 2098 2099 s = splimp(); 2100 2101 device_printf(scp->dev, "MII registers: "); 2102 for (i = 0; i < 2; i++) { 2103 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 2104 } 2105 for (i = 4; i < 7; i++) { 2106 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 2107 } 2108 printf("\n"); 2109 2110 (void)splx(s); 2111 } 2112 2113 static void 2114 xe_reg_dump(struct xe_softc *scp) { 2115 int page, i, s; 2116 2117 s = splimp(); 2118 2119 device_printf(scp->dev, "Common registers: "); 2120 for (i = 0; i < 8; i++) { 2121 printf(" %2.2x", XE_INB(i)); 2122 } 2123 printf("\n"); 2124 2125 for (page = 0; page <= 8; page++) { 2126 device_printf(scp->dev, "Register page %2.2x: ", page); 2127 XE_SELECT_PAGE(page); 2128 for (i = 8; i < 16; i++) { 2129 printf(" %2.2x", XE_INB(i)); 2130 } 2131 printf("\n"); 2132 } 2133 2134 for (page = 0x10; page < 0x5f; page++) { 2135 if ((page >= 0x11 && page <= 0x3f) || 2136 (page == 0x41) || 2137 (page >= 0x43 && page <= 0x4f) || 2138 (page >= 0x59)) 2139 continue; 2140 device_printf(scp->dev, "Register page %2.2x: ", page); 2141 XE_SELECT_PAGE(page); 2142 for (i = 8; i < 16; i++) { 2143 printf(" %2.2x", XE_INB(i)); 2144 } 2145 printf("\n"); 2146 } 2147 2148 (void)splx(s); 2149 } 2150 #endif 2151 2152 int 2153 xe_activate(device_t dev) 2154 { 2155 struct xe_softc *sc = device_get_softc(dev); 2156 int start, err; 2157 2158 if (!sc->dingo) { 2159 sc->port_rid = 0; /* 0 is managed by pccard */ 2160 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, 2161 &sc->port_rid, 0, ~0, 16, RF_ACTIVE); 2162 } else { 2163 /* 2164 * Find a 16 byte aligned ioport for the card. 2165 */ 2166 #if XE_DEBUG > 0 2167 device_printf(dev, "Finding an aligned port for RealPort\n"); 2168 #endif /* XE_DEBUG */ 2169 sc->port_rid = 1; /* 0 is managed by pccard */ 2170 start = 0x100; 2171 do { 2172 sc->port_res = bus_alloc_resource(dev, 2173 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16, 2174 RF_ACTIVE); 2175 if (sc->port_res == 0) 2176 break; /* we failed */ 2177 if ((rman_get_start(sc->port_res) & 0xf) == 0) 2178 break; /* good */ 2179 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2180 sc->port_res); 2181 start = (rman_get_start(sc->port_res) + 15) & ~0xf; 2182 } while (1); 2183 #if XE_DEBUG > 2 2184 device_printf(dev, "port 0x%0lx, size 0x%0lx\n", 2185 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 2186 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); 2187 #endif /* XE_DEBUG */ 2188 } 2189 if (!sc->port_res) { 2190 #if XE_DEBUG > 0 2191 device_printf(dev, "Cannot allocate ioport\n"); 2192 #endif 2193 return ENOMEM; 2194 } 2195 2196 sc->irq_rid = 0; 2197 sc->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid, 2198 0, ~0, 1, RF_ACTIVE); 2199 if (!sc->irq_res) { 2200 #if XE_DEBUG > 0 2201 device_printf(dev, "Cannot allocate irq\n"); 2202 #endif 2203 xe_deactivate(dev); 2204 return ENOMEM; 2205 } 2206 if ((err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, xe_intr, sc, 2207 &sc->intrhand)) != 0) { 2208 xe_deactivate(dev); 2209 return err; 2210 } 2211 2212 sc->bst = rman_get_bustag(sc->port_res); 2213 sc->bsh = rman_get_bushandle(sc->port_res); 2214 return (0); 2215 } 2216 2217 void 2218 xe_deactivate(device_t dev) 2219 { 2220 struct xe_softc *sc = device_get_softc(dev); 2221 2222 if (sc->intrhand) 2223 bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 2224 sc->intrhand = 0; 2225 if (sc->port_res) 2226 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2227 sc->port_res); 2228 sc->port_res = 0; 2229 if (sc->irq_res) 2230 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, 2231 sc->irq_res); 2232 sc->irq_res = 0; 2233 return; 2234 } 2235 2236 static device_method_t xe_pccard_methods[] = { 2237 /* Device interface */ 2238 DEVMETHOD(device_probe, xe_probe), 2239 DEVMETHOD(device_attach, xe_attach), 2240 DEVMETHOD(device_detach, xe_detach), 2241 2242 { 0, 0 } 2243 }; 2244 2245 static driver_t xe_pccard_driver = { 2246 "xe", 2247 xe_pccard_methods, 2248 sizeof(struct xe_softc), 2249 }; 2250 2251 devclass_t xe_devclass; 2252 2253 DECLARE_DUMMY_MODULE(if_xe); 2254 DRIVER_MODULE(if_xe, pccard, xe_pccard_driver, xe_devclass, 0, 0); 2255 2256