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 1.15 2005/01/23 20:23:22 joerg Exp $ 29 */ 30 31 /* 32 * XXX TODO XXX 33 * 34 * I've pushed this fairly far, but there are some things that need to be 35 * done here. I'm documenting them here in case I get destracted. -- imp 36 * 37 * xe_cem56fix -- need to figure out how to map the extra stuff. 38 */ 39 40 /* 41 * Portions of this software were derived from Werner Koch's xirc2ps driver 42 * for Linux under the terms of the following license (from v1.30 of the 43 * xirc2ps driver): 44 * 45 * Copyright (c) 1997 by Werner Koch (dd9jn) 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, and the entire permission notice in its entirety, 52 * including the disclaimer of warranties. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. The name of the author may not be used to endorse or promote 57 * products derived from this software without specific prior 58 * written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 61 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 63 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 64 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 65 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 66 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 68 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 69 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 70 * OF THE POSSIBILITY OF SUCH DAMAGE. 71 */ 72 73 /* 74 * FreeBSD device driver for Xircom CreditCard PCMCIA Ethernet adapters. The 75 * following cards are currently known to work with the driver: 76 * Xircom CreditCard 10/100 (CE3) 77 * Xircom CreditCard Ethernet + Modem 28 (CEM28) 78 * Xircom CreditCard Ethernet 10/100 + Modem 56 (CEM56) 79 * Xircom RealPort Ethernet 10 80 * Xircom RealPort Ethernet 10/100 81 * Xircom RealPort Ethernet 10/100 + Modem 56 (REM56, REM56G) 82 * Intel EtherExpress Pro/100 PC Card Mobile Adapter 16 (Pro/100 M16A) 83 * Compaq Netelligent 10/100 PC Card (CPQ-10/100) 84 * 85 * Some other cards *should* work, but support for them is either broken or in 86 * an unknown state at the moment. I'm always interested in hearing from 87 * people who own any of these cards: 88 * Xircom CreditCard 10Base-T (PS-CE2-10) 89 * Xircom CreditCard Ethernet + ModemII (CEM2) 90 * Xircom CEM28 and CEM33 Ethernet/Modem cards (may be variants of CEM2?) 91 * 92 * Thanks to all who assisted with the development and testing of the driver, 93 * especially: Werner Koch, Duke Kamstra, Duncan Barclay, Jason George, Dru 94 * Nelson, Mike Kephart, Bill Rainey and Douglas Rand. Apologies if I've left 95 * out anyone who deserves a mention here. 96 * 97 * Special thanks to Ade Lovett for both hosting the mailing list and doing 98 * the CEM56/REM56 support code; and the FreeBSD UK Users' Group for hosting 99 * the web pages. 100 * 101 * Contact points: 102 * 103 * Driver web page: http://ukug.uk.freebsd.org/~scott/xe_drv/ 104 * 105 * Mailing list: http://www.lovett.com/lists/freebsd-xircom/ 106 * or send "subscribe freebsd-xircom" to <majordomo@lovett.com> 107 * 108 * Author email: <scott@uk.freebsd.org> 109 */ 110 111 112 #include <sys/param.h> 113 #include <sys/cdefs.h> 114 #include <sys/errno.h> 115 #include <sys/kernel.h> 116 #include <sys/mbuf.h> 117 #include <sys/select.h> 118 #include <sys/socket.h> 119 #include <sys/sockio.h> 120 #include <sys/systm.h> 121 #include <sys/uio.h> 122 123 #include <sys/module.h> 124 #include <sys/bus.h> 125 126 #include <machine/bus.h> 127 #include <machine/resource.h> 128 #include <sys/rman.h> 129 130 #include <net/ethernet.h> 131 #include <net/if.h> 132 #include <net/if_arp.h> 133 #include <net/if_dl.h> 134 #include <net/if_media.h> 135 #include <net/if_mib.h> 136 #include <net/bpf.h> 137 138 #include <bus/pccard/pccardvar.h> 139 #include "card_if.h" 140 141 #include "if_xereg.h" 142 #include "if_xevar.h" 143 144 #include <machine/clock.h> 145 146 /* 147 * MII command structure 148 */ 149 struct xe_mii_frame { 150 u_int8_t mii_stdelim; 151 u_int8_t mii_opcode; 152 u_int8_t mii_phyaddr; 153 u_int8_t mii_regaddr; 154 u_int8_t mii_turnaround; 155 u_int16_t mii_data; 156 }; 157 158 /* 159 * Media autonegotiation progress constants 160 */ 161 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */ 162 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */ 163 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */ 164 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */ 165 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */ 166 167 168 /* 169 * Prototypes start here 170 */ 171 static int xe_probe (device_t dev); 172 static int xe_attach (device_t dev); 173 static int xe_detach (device_t dev); 174 static int xe_activate (device_t dev); 175 static void xe_deactivate (device_t dev); 176 static void xe_init (void *xscp); 177 static void xe_start (struct ifnet *ifp); 178 static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *); 179 static void xe_watchdog (struct ifnet *ifp); 180 static int xe_media_change (struct ifnet *ifp); 181 static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp); 182 static timeout_t xe_setmedia; 183 static void xe_hard_reset (struct xe_softc *scp); 184 static void xe_soft_reset (struct xe_softc *scp); 185 static void xe_stop (struct xe_softc *scp); 186 static void xe_enable_intr (struct xe_softc *scp); 187 static void xe_disable_intr (struct xe_softc *scp); 188 static void xe_setmulti (struct xe_softc *scp); 189 static void xe_setaddrs (struct xe_softc *scp); 190 static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp); 191 #if 0 192 static u_int32_t xe_compute_crc (u_int8_t *data, int len); 193 static int xe_compute_hashbit (u_int32_t crc); 194 #endif 195 196 /* 197 * MII functions 198 */ 199 static void xe_mii_sync (struct xe_softc *scp); 200 static int xe_mii_init (struct xe_softc *scp); 201 static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt); 202 static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame); 203 static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame); 204 static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg); 205 static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data); 206 207 /* 208 * Debug functions -- uncomment for VERY verbose dignostic information. 209 * Set to 1 for less verbose information 210 */ 211 /* #define XE_DEBUG 2 */ 212 #ifdef XE_DEBUG 213 #define XE_REG_DUMP(scp) xe_reg_dump((scp)) 214 #define XE_MII_DUMP(scp) xe_mii_dump((scp)) 215 static void xe_reg_dump (struct xe_softc *scp); 216 static void xe_mii_dump (struct xe_softc *scp); 217 #else 218 #define XE_REG_DUMP(scp) 219 #define XE_MII_DUMP(scp) 220 #endif 221 222 /* 223 * Fixing for RealPort cards - they need a little furtling to get the 224 * ethernet working 225 */ 226 static int 227 xe_cem56fix(device_t dev) 228 { 229 struct xe_softc *sc = (struct xe_softc *) device_get_softc(dev); 230 bus_space_tag_t bst; 231 bus_space_handle_t bsh; 232 struct resource *r; 233 int rid; 234 int ioport; 235 236 #ifdef XE_DEBUG 237 device_printf(dev, "Hacking your Realport, master\n"); 238 #endif 239 240 #if XE_DEBUG > 1 241 device_printf(dev, "Realport port 0x%0lx, size 0x%0lx\n", 242 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 243 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); 244 #endif 245 246 rid = 0; 247 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE); 248 if (!r) { 249 #if XE_DEBUG > 0 250 device_printf(dev, "Can't map in attribute memory\n"); 251 #endif 252 return -1; 253 } 254 255 bsh = rman_get_bushandle(r); 256 bst = rman_get_bustag(r); 257 258 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid, 259 PCCARD_A_MEM_ATTR); 260 261 bus_space_write_1(bst, bsh, DINGO_ECOR, DINGO_ECOR_IRQ_LEVEL | 262 DINGO_ECOR_INT_ENABLE | 263 DINGO_ECOR_IOB_ENABLE | 264 DINGO_ECOR_ETH_ENABLE); 265 ioport = bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid); 266 bus_space_write_1(bst, bsh, DINGO_EBAR0, ioport & 0xff); 267 bus_space_write_1(bst, bsh, DINGO_EBAR1, (ioport >> 8) & 0xff); 268 269 bus_space_write_1(bst, bsh, DINGO_DCOR0, DINGO_DCOR0_SF_INT); 270 bus_space_write_1(bst, bsh, DINGO_DCOR1, DINGO_DCOR1_INT_LEVEL | 271 DINGO_DCOR1_EEDIO); 272 bus_space_write_1(bst, bsh, DINGO_DCOR2, 0x00); 273 bus_space_write_1(bst, bsh, DINGO_DCOR3, 0x00); 274 bus_space_write_1(bst, bsh, DINGO_DCOR4, 0x00); 275 276 bus_release_resource(dev, SYS_RES_MEMORY, rid, r); 277 278 /* success! */ 279 return 0; 280 } 281 282 /* 283 * PCMCIA probe routine. 284 * Probe and identify the device. Called by the slot manager when the card is 285 * inserted or the machine wakes up from suspend mode. Assmes that the slot 286 * structure has been initialised already. 287 */ 288 static int 289 xe_probe(device_t dev) 290 { 291 struct xe_softc *scp = (struct xe_softc *) device_get_softc(dev); 292 bus_space_tag_t bst; 293 bus_space_handle_t bsh; 294 int buf; 295 u_char ver_str[CISTPL_BUFSIZE>>1]; 296 off_t offs; 297 int success, rc, i; 298 int rid; 299 struct resource *r; 300 301 success = 0; 302 303 #ifdef XE_DEBUG 304 device_printf(dev, "xe: Probing\n"); 305 #endif 306 307 /* Map in the CIS */ 308 rid = 0; 309 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE); 310 if (!r) { 311 #ifdef XE_DEBUG 312 device_printf(dev, "Can't map in cis\n"); 313 #endif 314 return ENOMEM; 315 } 316 bsh = rman_get_bushandle(r); 317 bst = rman_get_bustag(r); 318 buf = 0; 319 320 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid, 321 PCCARD_A_MEM_ATTR); 322 323 /* Grep through CIS looking for relevant tuples */ 324 rc = 0; 325 offs = 0; 326 do { 327 u_int16_t vendor; 328 u_int8_t rev, media, prod; 329 330 switch (CISTPL_TYPE(buf)) { 331 332 case 0x15: /* Grab version string (needed to ID some weird CE2's) */ 333 #if XE_DEBUG > 1 334 device_printf(dev, "Got version string (0x15)\n"); 335 #endif 336 for (i = 0; i < CISTPL_LEN(buf); ver_str[i] = CISTPL_DATA(buf, i++)); 337 ver_str[i] = '\0'; 338 ver_str[(CISTPL_BUFSIZE>>1) - 1] = CISTPL_LEN(buf); 339 success++; 340 break; 341 342 case 0x20: /* Figure out what type of card we have */ 343 #if XE_DEBUG > 1 344 device_printf(dev, "Got card ID (0x20)\n"); 345 #endif 346 vendor = CISTPL_DATA(buf, 0) + (CISTPL_DATA(buf, 1) << 8); 347 rev = CISTPL_DATA(buf, 2); 348 media = CISTPL_DATA(buf, 3); 349 prod = CISTPL_DATA(buf, 4); 350 351 switch (vendor) { /* Get vendor ID */ 352 case 0x0105: 353 scp->vendor = "Xircom"; break; 354 case 0x0138: 355 case 0x0183: 356 scp->vendor = "Compaq"; break; 357 case 0x0089: 358 scp->vendor = "Intel"; break; 359 default: 360 scp->vendor = "Unknown"; 361 } 362 363 if (!((prod & 0x40) && (media & 0x01))) { 364 #if XE_DEBUG > 1 365 device_printf(dev, "Not a PCMCIA Ethernet card!\n"); 366 #endif 367 rc = ENODEV; /* Not a PCMCIA Ethernet device */ 368 } else { 369 if (media & 0x10) { /* Ethernet/modem cards */ 370 #if XE_DEBUG > 1 371 device_printf(dev, "Card is Ethernet/modem combo\n"); 372 #endif 373 scp->modem = 1; 374 switch (prod & 0x0f) { 375 case 1: 376 scp->card_type = "CEM"; break; 377 case 2: 378 scp->ce2 = 1; 379 scp->card_type = "CEM2"; break; 380 case 3: 381 scp->ce2 = 1; 382 scp->card_type = "CEM3"; break; 383 case 4: 384 scp->ce2 = 1; 385 scp->card_type = "CEM33"; break; 386 case 5: 387 scp->mohawk = 1; 388 scp->card_type = "CEM56M"; break; 389 case 6: 390 case 7: /* Some kind of RealPort card */ 391 scp->mohawk = 1; 392 scp->dingo = 1; 393 scp->card_type = "CEM56"; break; 394 default: 395 rc = ENODEV; 396 } 397 } else { /* Ethernet-only cards */ 398 #if XE_DEBUG > 1 399 device_printf(dev, "Card is Ethernet only\n"); 400 #endif 401 switch (prod & 0x0f) { 402 case 1: 403 scp->card_type = "CE"; break; 404 case 2: 405 scp->ce2 = 1; 406 scp->card_type = "CE2"; break; 407 case 3: 408 scp->mohawk = 1; 409 scp->card_type = "CE3"; break; 410 default: 411 rc = ENODEV; 412 } 413 } 414 } 415 success++; 416 break; 417 418 case 0x22: /* Get MAC address */ 419 if ((CISTPL_LEN(buf) == 8) && 420 (CISTPL_DATA(buf, 0) == 0x04) && 421 (CISTPL_DATA(buf, 1) == ETHER_ADDR_LEN)) { 422 #if XE_DEBUG > 1 423 device_printf(dev, "Got MAC address (0x22)\n"); 424 #endif 425 for (i = 0; i < ETHER_ADDR_LEN; i++) 426 scp->arpcom.ac_enaddr[i] = CISTPL_DATA(buf, i+2); 427 } 428 success++; 429 break; 430 default: 431 break; 432 } 433 434 if (CISTPL_TYPE(buf) == 0xff) 435 break; 436 /* Skip to next tuple */ 437 buf += ((CISTPL_LEN(buf) + 2) << 1); 438 439 } while (1); 440 441 /* unmap the cis */ 442 bus_release_resource(dev, SYS_RES_MEMORY, rid, r); 443 444 if (rc) 445 return(rc); 446 447 /* Die now if something went wrong above */ 448 if (success < 3) 449 return ENXIO; 450 451 /* Check for certain strange CE2's that look like CE's */ 452 if (strcmp(scp->card_type, "CE") == 0) { 453 u_char *str = ver_str; 454 #if XE_DEBUG > 1 455 device_printf(dev, "Checking for weird CE2 string\n"); 456 #endif 457 str += strlen(str) + 1; /* Skip forward to 3rd version string */ 458 str += strlen(str) + 1; 459 str += strlen(str) + 1; 460 for (i = 0; i < strlen(str) - 2; i++) { 461 if (bcmp(&str[i], "CE2", 3) ==0) { /* Look for "CE2" string */ 462 scp->card_type = "CE2"; 463 } 464 } 465 } 466 467 /* Reject unsupported cards */ 468 if (strcmp(scp->card_type, "CE") == 0 || strcmp(scp->card_type, "CEM") == 0) { 469 device_printf(dev, "Sorry, your %s card is not supported :(\n", 470 scp->card_type); 471 return ENODEV; 472 } 473 474 /* Success */ 475 return 0; 476 } 477 478 /* 479 * The device entry is being removed, probably because someone ejected the 480 * card. The interface should have been brought down manually before calling 481 * this function; if not you may well lose packets. In any case, I shut down 482 * the card and the interface, and hope for the best. 483 */ 484 static int 485 xe_detach(device_t dev) { 486 struct xe_softc *sc = device_get_softc(dev); 487 488 sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING; 489 callout_stop(&sc->xe_timer); 490 ether_ifdetach(&sc->arpcom.ac_if); 491 xe_deactivate(dev); 492 return 0; 493 } 494 495 /* 496 * Attach a device. 497 */ 498 static int 499 xe_attach (device_t dev) { 500 struct xe_softc *scp = device_get_softc(dev); 501 int err; 502 503 #ifdef XE_DEBUG 504 device_printf(dev, "attach\n"); 505 #endif 506 507 if ((err = xe_activate(dev)) != 0) 508 return (err); 509 510 /* Fill in some private data */ 511 scp->ifp = &scp->arpcom.ac_if; 512 scp->ifm = &scp->ifmedia; 513 scp->autoneg_status = 0; 514 515 /* Hack RealPorts into submission */ 516 if (scp->dingo && xe_cem56fix(dev) < 0) { 517 device_printf(dev, "Unable to fix your RealPort\n"); 518 xe_deactivate(dev); 519 return ENODEV; 520 } 521 522 /* Hopefully safe to read this here */ 523 XE_SELECT_PAGE(4); 524 scp->version = XE_INB(XE_BOV); 525 526 scp->dev = dev; 527 /* Initialise the ifnet structure */ 528 scp->ifp->if_softc = scp; 529 if_initname(scp->ifp, "xe", device_get_unit(dev)); 530 scp->ifp->if_timer = 0; 531 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 532 scp->ifp->if_linkmib = &scp->mibdata; 533 scp->ifp->if_linkmiblen = sizeof scp->mibdata; 534 scp->ifp->if_start = xe_start; 535 scp->ifp->if_ioctl = xe_ioctl; 536 scp->ifp->if_watchdog = xe_watchdog; 537 scp->ifp->if_init = xe_init; 538 scp->ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 539 540 /* Initialise the ifmedia structure */ 541 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status); 542 callout_init(&scp->xe_timer); 543 544 /* 545 * Fill in supported media types. Some cards _do_ support full duplex 546 * operation, but this driver doesn't, yet. Therefore we leave those modes 547 * out of the list. We support some form of autoselection in all cases. 548 */ 549 if (scp->mohawk) { 550 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL); 551 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 552 } 553 else { 554 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 555 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL); 556 } 557 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL); 558 559 /* Default is to autoselect best supported media type */ 560 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO); 561 562 /* Print some useful information */ 563 device_printf(dev, "%s %s, bonding version %#x%s%s\n", 564 scp->vendor, 565 scp->card_type, 566 scp->version, 567 scp->mohawk ? ", 100Mbps capable" : "", 568 scp->modem ? ", with modem" : ""); 569 if (scp->mohawk) { 570 XE_SELECT_PAGE(0x10); 571 device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n", 572 XE_INW(XE_DINGOID), 573 XE_INW(XE_RevID), 574 XE_INW(XE_VendorID)); 575 } 576 if (scp->ce2) { 577 XE_SELECT_PAGE(0x45); 578 device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV)); 579 } 580 581 /* Attach the interface */ 582 ether_ifattach(scp->ifp, scp->arpcom.ac_enaddr); 583 584 /* Done */ 585 return 0; 586 } 587 588 589 /* 590 * Initialize device. Completes the reset procedure on the card and starts 591 * output. If there's an autonegotiation in progress we DON'T do anything; 592 * the media selection code will call us again when it's done. 593 */ 594 static void 595 xe_init(void *xscp) { 596 struct xe_softc *scp = xscp; 597 int s; 598 599 #ifdef XE_DEBUG 600 device_printf(scp->dev, "init\n"); 601 #endif 602 603 if (TAILQ_EMPTY(&scp->ifp->if_addrhead)) return; 604 605 /* Reset transmitter flags */ 606 scp->tx_queued = 0; 607 scp->tx_tpr = 0; 608 scp->tx_collisions = 0; 609 scp->ifp->if_timer = 0; 610 611 s = splimp(); 612 613 XE_SELECT_PAGE(0x42); 614 XE_OUTB(XE_SWC0, 0x20); /* Disable source insertion (WTF is that?) */ 615 616 /* 617 * Set the 'local memory dividing line' -- splits the 32K card memory into 618 * 8K for transmit buffers and 24K for receive. This is done automatically 619 * on newer revision cards. 620 */ 621 if (scp->srev != 1) { 622 XE_SELECT_PAGE(2); 623 XE_OUTW(XE_RBS, 0x2000); 624 } 625 626 /* Set up multicast addresses */ 627 xe_setmulti(scp); 628 629 /* Fix the data offset register -- reset leaves it off-by-one */ 630 XE_SELECT_PAGE(0); 631 XE_OUTW(XE_DO, 0x2000); 632 633 /* 634 * Set MAC interrupt masks and clear status regs. The bit names are direct 635 * from the Linux code; I have no idea what most of them do. 636 */ 637 XE_SELECT_PAGE(0x40); /* Bit 7..0 */ 638 XE_OUTB(XE_RX0Msk, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */ 639 XE_OUTB(XE_TX0Msk, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ 640 XE_OUTB(XE_TX0Msk+1, 0xb0); /* rsv, rsv, PTD, EXT, rsv, rsv, rsv, rsv */ 641 XE_OUTB(XE_RST0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */ 642 XE_OUTB(XE_TXST0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ 643 XE_OUTB(XE_TXST1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */ 644 645 /* 646 * Check for an in-progress autonegotiation. If one is active, just set 647 * IFF_RUNNING and return. The media selection code will call us again when 648 * it's done. 649 */ 650 if (scp->autoneg_status) { 651 scp->ifp->if_flags |= IFF_RUNNING; 652 } 653 else { 654 /* Enable receiver, put MAC online */ 655 XE_SELECT_PAGE(0x40); 656 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); 657 658 /* Set up IMR, enable interrupts */ 659 xe_enable_intr(scp); 660 661 /* Attempt to start output */ 662 scp->ifp->if_flags |= IFF_RUNNING; 663 scp->ifp->if_flags &= ~IFF_OACTIVE; 664 xe_start(scp->ifp); 665 } 666 667 (void)splx(s); 668 } 669 670 671 /* 672 * Start output on interface. We make two assumptions here: 673 * 1) that the current priority is set to splimp _before_ this code 674 * is called *and* is returned to the appropriate priority after 675 * return 676 * 2) that the IFF_OACTIVE flag is checked before this code is called 677 * (i.e. that the output part of the interface is idle) 678 */ 679 static void 680 xe_start(struct ifnet *ifp) { 681 struct xe_softc *scp = ifp->if_softc; 682 struct mbuf *mbp; 683 684 /* 685 * Loop while there are packets to be sent, and space to send them. 686 */ 687 while (1) { 688 IF_DEQUEUE(&ifp->if_snd, mbp); /* Suck a packet off the send queue */ 689 690 if (mbp == NULL) { 691 /* 692 * We are using the !OACTIVE flag to indicate to the outside world that 693 * we can accept an additional packet rather than that the transmitter 694 * is _actually_ active. Indeed, the transmitter may be active, but if 695 * we haven't filled all the buffers with data then we still want to 696 * accept more. 697 */ 698 ifp->if_flags &= ~IFF_OACTIVE; 699 return; 700 } 701 702 if (xe_pio_write_packet(scp, mbp) != 0) { 703 IF_PREPEND(&ifp->if_snd, mbp); /* Push the packet back onto the queue */ 704 ifp->if_flags |= IFF_OACTIVE; 705 return; 706 } 707 708 BPF_MTAP(ifp, mbp); 709 710 ifp->if_timer = 5; /* In case we don't hear from the card again */ 711 scp->tx_queued++; 712 713 m_freem(mbp); 714 } 715 } 716 717 718 /* 719 * Process an ioctl request. Adapted from the ed driver. 720 */ 721 static int 722 xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) { 723 struct xe_softc *scp; 724 int s, error; 725 726 scp = ifp->if_softc; 727 error = 0; 728 729 s = splimp(); 730 731 switch (command) { 732 733 case SIOCSIFADDR: 734 case SIOCGIFADDR: 735 case SIOCSIFMTU: 736 error = ether_ioctl(ifp, command, data); 737 break; 738 739 case SIOCSIFFLAGS: 740 /* 741 * If the interface is marked up and stopped, then start it. If it is 742 * marked down and running, then stop it. 743 */ 744 if (ifp->if_flags & IFF_UP) { 745 if (!(ifp->if_flags & IFF_RUNNING)) { 746 xe_hard_reset(scp); 747 xe_setmedia(scp); 748 xe_init(scp); 749 } 750 } 751 else { 752 if (ifp->if_flags & IFF_RUNNING) 753 xe_stop(scp); 754 } 755 756 case SIOCADDMULTI: 757 case SIOCDELMULTI: 758 /* 759 * Multicast list has (maybe) changed; set the hardware filter 760 * accordingly. This also serves to deal with promiscuous mode if we have 761 * a BPF listener active. 762 */ 763 xe_setmulti(scp); 764 error = 0; 765 break; 766 767 case SIOCSIFMEDIA: 768 case SIOCGIFMEDIA: 769 /* 770 * Someone wants to get/set media options. 771 */ 772 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command); 773 break; 774 775 default: 776 error = EINVAL; 777 } 778 779 (void)splx(s); 780 781 return error; 782 } 783 784 785 /* 786 * Card interrupt handler. 787 * 788 * This function is probably more complicated than it needs to be, as it 789 * attempts to deal with the case where multiple packets get sent between 790 * interrupts. This is especially annoying when working out the collision 791 * stats. Not sure whether this case ever really happens or not (maybe on a 792 * slow/heavily loaded machine?) so it's probably best to leave this like it 793 * is. 794 * 795 * Note that the crappy PIO used to get packets on and off the card means that 796 * you will spend a lot of time in this routine -- I can get my P150 to spend 797 * 90% of its time servicing interrupts if I really hammer the network. Could 798 * fix this, but then you'd start dropping/losing packets. The moral of this 799 * story? If you want good network performance _and_ some cycles left over to 800 * get your work done, don't buy a Xircom card. Or convince them to tell me 801 * how to do memory-mapped I/O :) 802 */ 803 static void 804 xe_intr(void *xscp) 805 { 806 struct xe_softc *scp = (struct xe_softc *) xscp; 807 struct ifnet *ifp; 808 int result; 809 u_int16_t rx_bytes, rxs, txs; 810 u_int8_t psr, isr, esr, rsr; 811 812 ifp = &scp->arpcom.ac_if; 813 rx_bytes = 0; /* Bytes received on this interrupt */ 814 result = 0; /* Set true if the interrupt is for us */ 815 816 if (scp->mohawk) { 817 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 818 } 819 820 psr = XE_INB(XE_PR); /* Stash the current register page */ 821 822 /* 823 * Read ISR to see what caused this interrupt. Note that this clears the 824 * ISR on CE2 type cards. 825 */ 826 if ((isr = XE_INB(XE_ISR)) && isr != 0xff) { 827 828 result = 1; /* This device did generate an int */ 829 esr = XE_INB(XE_ESR); /* Read the other status registers */ 830 XE_SELECT_PAGE(0x40); 831 rxs = XE_INB(XE_RST0); 832 XE_OUTB(XE_RST0, ~rxs & 0xff); 833 txs = XE_INB(XE_TXST0); 834 txs |= XE_INB(XE_TXST1) << 8; 835 XE_OUTB(XE_TXST0, 0); 836 XE_OUTB(XE_TXST1, 0); 837 XE_SELECT_PAGE(0); 838 839 #if XE_DEBUG > 2 840 printf("xe%d: ISR=%#2.2x ESR=%#2.2x RST=%#2.2x TXST=%#4.4x\n", unit, isr, esr, rxs, txs); 841 #endif 842 843 /* 844 * Handle transmit interrupts 845 */ 846 if (isr & XE_ISR_TX_PACKET) { 847 u_int8_t new_tpr, sent; 848 849 if ((new_tpr = XE_INB(XE_TPR)) < scp->tx_tpr) /* Update packet count */ 850 sent = (0xff - scp->tx_tpr) + new_tpr; /* TPR rolled over */ 851 else 852 sent = new_tpr - scp->tx_tpr; 853 854 if (sent > 0) { /* Packets sent since last interrupt */ 855 scp->tx_tpr = new_tpr; 856 scp->tx_queued -= sent; 857 ifp->if_opackets += sent; 858 ifp->if_collisions += scp->tx_collisions; 859 860 /* 861 * Collision stats are a PITA. If multiples frames have been sent, we 862 * distribute any outstanding collision count equally amongst them. 863 * However, if we're missing interrupts we're quite likely to also 864 * miss some collisions; thus the total count will be off anyway. 865 * Likewise, if we miss a frame dropped due to excessive collisions 866 * any outstanding collisions count will be held against the next 867 * frame to be successfully sent. Hopefully it averages out in the 868 * end! 869 * XXX - This will screw up if tx_collisions/sent > 14. FIX IT! 870 */ 871 switch (scp->tx_collisions) { 872 case 0: 873 break; 874 case 1: 875 scp->mibdata.dot3StatsSingleCollisionFrames++; 876 scp->mibdata.dot3StatsCollFrequencies[0]++; 877 break; 878 default: 879 if (sent == 1) { 880 scp->mibdata.dot3StatsMultipleCollisionFrames++; 881 scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++; 882 } 883 else { /* Distribute across multiple frames */ 884 scp->mibdata.dot3StatsMultipleCollisionFrames += sent; 885 scp->mibdata. 886 dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent; 887 scp->mibdata. 888 dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent; 889 } 890 } 891 scp->tx_collisions = 0; 892 } 893 ifp->if_timer = 0; 894 ifp->if_flags &= ~IFF_OACTIVE; 895 } 896 if (txs & 0x0002) { /* Excessive collisions (packet dropped) */ 897 ifp->if_collisions += 16; 898 ifp->if_oerrors++; 899 scp->tx_collisions = 0; 900 scp->mibdata.dot3StatsExcessiveCollisions++; 901 scp->mibdata.dot3StatsMultipleCollisionFrames++; 902 scp->mibdata.dot3StatsCollFrequencies[15]++; 903 XE_OUTB(XE_CR, XE_CR_RESTART_TX); 904 } 905 if (txs & 0x0040) /* Transmit aborted -- probably collisions */ 906 scp->tx_collisions++; 907 908 909 /* 910 * Handle receive interrupts 911 */ 912 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) { 913 914 if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) { 915 struct ether_header *ehp; 916 struct mbuf *mbp; 917 u_int16_t len; 918 919 len = XE_INW(XE_RBC); 920 921 if (len == 0) 922 continue; 923 924 #if 0 925 /* 926 * Limit the amount of time we spend in this loop, dropping packets if 927 * necessary. The Linux code does this with considerably more 928 * finesse, adjusting the threshold dynamically. 929 */ 930 if ((rx_bytes += len) > 22000) { 931 ifp->if_iqdrops++; 932 scp->mibData.dot3StatsMissedFrames++; 933 XE_OUTW(XE_DO, 0x8000); 934 continue; 935 } 936 #endif 937 938 if (len & 0x01) 939 len++; 940 941 MGETHDR(mbp, MB_DONTWAIT, MT_DATA); /* Allocate a header mbuf */ 942 if (mbp != NULL) { 943 mbp->m_pkthdr.rcvif = ifp; 944 mbp->m_pkthdr.len = mbp->m_len = len; 945 946 /* 947 * If the mbuf header isn't big enough for the packet, attach an 948 * mbuf cluster to hold it. The +2 is to allow for the nasty little 949 * alignment hack below. 950 */ 951 if (len + 2 > MHLEN) { 952 MCLGET(mbp, MB_DONTWAIT); 953 if ((mbp->m_flags & M_EXT) == 0) { 954 m_freem(mbp); 955 mbp = NULL; 956 } 957 } 958 } 959 960 if (mbp != NULL) { 961 /* 962 * The Ethernet header is 14 bytes long; thus the actual packet data 963 * won't be 32-bit aligned when it's dumped into the mbuf. We 964 * offset everything by 2 bytes to fix this. Apparently the 965 * alignment is important for NFS, damn its eyes. 966 */ 967 mbp->m_data += 2; 968 ehp = mtod(mbp, struct ether_header *); 969 970 /* 971 * Now get the packet, including the Ethernet header and trailer (?) 972 * We use programmed I/O, because we don't know how to do shared 973 * memory with these cards. So yes, it's real slow, and heavy on 974 * the interrupts (CPU on my P150 maxed out at ~950KBps incoming). 975 */ 976 if (scp->srev == 0) { /* Workaround a bug in old cards */ 977 u_short rhs; 978 979 XE_SELECT_PAGE(5); 980 rhs = XE_INW(XE_RHSA); 981 XE_SELECT_PAGE(0); 982 983 rhs += 3; /* Skip control info */ 984 985 if (rhs >= 0x8000) 986 rhs = 0; 987 988 if (rhs + len > 0x8000) { 989 int i; 990 991 /* 992 * XXX - This i-- seems very wrong, but it's what the Linux guys 993 * XXX - do. Need someone with an old CE2 to test this for me. 994 * XXX - 99/3/28: Changed the first i-- to an i++, maybe that'll 995 * XXX - fix it? It seems as though the previous version would 996 * XXX - have caused an infinite loop (what, another one?). 997 */ 998 for (i = 0; i < len; i++, rhs++) { 999 ((char *)ehp)[i] = XE_INB(XE_EDP); 1000 if (rhs == 0x8000) { 1001 rhs = 0; 1002 i--; 1003 } 1004 } 1005 } 1006 else 1007 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, 1008 (u_int16_t *) ehp, len >> 1); 1009 } 1010 else 1011 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, 1012 (u_int16_t *) ehp, len >> 1); 1013 1014 /* Deliver packet to upper layers */ 1015 if (mbp != NULL) { 1016 mbp->m_pkthdr.len = mbp->m_len = len; 1017 (*ifp->if_input)(ifp, mbp); /* Send the packet on its way */ 1018 ifp->if_ipackets++; /* Success! */ 1019 } 1020 XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */ 1021 } 1022 } 1023 else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */ 1024 scp->mibdata.dot3StatsFrameTooLongs++; 1025 ifp->if_ierrors++; 1026 } 1027 else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */ 1028 scp->mibdata.dot3StatsFCSErrors++; 1029 ifp->if_ierrors++; 1030 } 1031 else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */ 1032 scp->mibdata.dot3StatsAlignmentErrors++; 1033 ifp->if_ierrors++; 1034 } 1035 } 1036 if (rxs & 0x10) { /* Receiver overrun */ 1037 scp->mibdata.dot3StatsInternalMacReceiveErrors++; 1038 ifp->if_ierrors++; 1039 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN); 1040 } 1041 } 1042 1043 XE_SELECT_PAGE(psr); /* Restore saved page */ 1044 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */ 1045 1046 /* Could force an int here, instead of dropping packets? */ 1047 /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */ 1048 1049 return; 1050 } 1051 1052 1053 /* 1054 * Device timeout/watchdog routine. Called automatically if we queue a packet 1055 * for transmission but don't get an interrupt within a specified timeout 1056 * (usually 5 seconds). When this happens we assume the worst and reset the 1057 * card. 1058 */ 1059 static void 1060 xe_watchdog(struct ifnet *ifp) { 1061 struct xe_softc *scp = ifp->if_softc; 1062 1063 device_printf(scp->dev, "watchdog timeout; resetting card\n"); 1064 scp->tx_timeouts++; 1065 ifp->if_oerrors += scp->tx_queued; 1066 xe_stop(scp); 1067 xe_hard_reset(scp); 1068 xe_setmedia(scp); 1069 xe_init(scp); 1070 } 1071 1072 1073 /* 1074 * Change media selection. 1075 */ 1076 static int 1077 xe_media_change(struct ifnet *ifp) { 1078 struct xe_softc *scp = ifp->if_softc; 1079 1080 #ifdef XE_DEBUG 1081 printf("%s: media_change\n", ifp->if_xname); 1082 #endif 1083 1084 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER) 1085 return(EINVAL); 1086 1087 /* 1088 * Some card/media combos aren't always possible -- filter those out here. 1089 */ 1090 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO || 1091 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok) 1092 return (EINVAL); 1093 1094 xe_setmedia(scp); 1095 1096 return 0; 1097 } 1098 1099 1100 /* 1101 * Return current media selection. 1102 */ 1103 static void 1104 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) { 1105 1106 #ifdef XE_DEBUG 1107 printf("%s: media_status\n", ifp->if_xname); 1108 #endif 1109 1110 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media; 1111 1112 return; 1113 } 1114 1115 1116 /* 1117 * Select active media. 1118 */ 1119 static void xe_setmedia(void *xscp) { 1120 struct xe_softc *scp = xscp; 1121 u_int16_t bmcr, bmsr, anar, lpar; 1122 1123 #ifdef XE_DEBUG 1124 device_printf(scp->dev, "setmedia\n"); 1125 #endif 1126 1127 /* Cancel any pending timeout */ 1128 callout_stop(&scp->xe_timer); 1129 xe_disable_intr(scp); 1130 1131 /* Select media */ 1132 scp->media = IFM_ETHER; 1133 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) { 1134 1135 case IFM_AUTO: /* Autoselect media */ 1136 scp->media = IFM_ETHER|IFM_AUTO; 1137 1138 /* 1139 * Autoselection is really awful. It goes something like this: 1140 * 1141 * Wait until the transmitter goes idle (2sec timeout). 1142 * Reset card 1143 * IF a 100Mbit PHY exists 1144 * Start NWAY autonegotiation (3.5sec timeout) 1145 * IF that succeeds 1146 * Select 100baseTX or 10baseT, whichever was detected 1147 * ELSE 1148 * Reset card 1149 * IF a 100Mbit PHY exists 1150 * Try to force a 100baseTX link (3sec timeout) 1151 * IF that succeeds 1152 * Select 100baseTX 1153 * ELSE 1154 * Disable the PHY 1155 * ENDIF 1156 * ENDIF 1157 * ENDIF 1158 * ENDIF 1159 * IF nothing selected so far 1160 * IF a 100Mbit PHY exists 1161 * Select 10baseT 1162 * ELSE 1163 * Select 10baseT or 10base2, whichever is connected 1164 * ENDIF 1165 * ENDIF 1166 */ 1167 switch (scp->autoneg_status) { 1168 1169 case XE_AUTONEG_NONE: 1170 #if XE_DEBUG > 1 1171 device_printf(scp->dev, "Waiting for idle transmitter\n"); 1172 #endif 1173 scp->arpcom.ac_if.if_flags |= IFF_OACTIVE; 1174 scp->autoneg_status = XE_AUTONEG_WAITING; 1175 callout_reset(&scp->xe_timer, hz * 2, xe_setmedia, scp); 1176 return; 1177 1178 case XE_AUTONEG_WAITING: 1179 xe_soft_reset(scp); 1180 if (scp->phy_ok) { 1181 #if XE_DEBUG > 1 1182 device_printf(scp->dev, "Starting autonegotiation\n"); 1183 #endif 1184 bmcr = xe_phy_readreg(scp, PHY_BMCR); 1185 bmcr &= ~(PHY_BMCR_AUTONEGENBL); 1186 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1187 anar = xe_phy_readreg(scp, PHY_ANAR); 1188 anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL); 1189 anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF; 1190 xe_phy_writereg(scp, PHY_ANAR, anar); 1191 bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; 1192 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1193 scp->autoneg_status = XE_AUTONEG_STARTED; 1194 callout_reset(&scp->xe_timer, hz * 7 / 2, xe_setmedia, scp); 1195 return; 1196 } 1197 else { 1198 scp->autoneg_status = XE_AUTONEG_FAIL; 1199 } 1200 break; 1201 1202 case XE_AUTONEG_STARTED: 1203 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1204 lpar = xe_phy_readreg(scp, PHY_LPAR); 1205 if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) { 1206 #if XE_DEBUG > 1 1207 device_printf(scp->dev, "Autonegotiation complete!\n"); 1208 #endif 1209 /* 1210 * XXX - Shouldn't have to do this, but (on my hub at least) the 1211 * XXX - transmitter won't work after a successful autoneg. So we see 1212 * XXX - what the negotiation result was and force that mode. I'm 1213 * XXX - sure there is an easy fix for this. 1214 */ 1215 if (lpar & PHY_LPAR_100BTXHALF) { 1216 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1217 XE_MII_DUMP(scp); 1218 XE_SELECT_PAGE(2); 1219 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1220 scp->media = IFM_ETHER|IFM_100_TX; 1221 scp->autoneg_status = XE_AUTONEG_NONE; 1222 } 1223 else { 1224 /* 1225 * XXX - Bit of a hack going on in here. 1226 * XXX - This is derived from Ken Hughes patch to the Linux driver 1227 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B 1228 * XXX - cards. What's a CE3B and how's it differ from a plain CE3? 1229 * XXX - these are the things we need to find out. 1230 */ 1231 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1232 XE_SELECT_PAGE(2); 1233 /* BEGIN HACK */ 1234 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1235 XE_SELECT_PAGE(0x42); 1236 XE_OUTB(XE_SWC1, 0x80); 1237 scp->media = IFM_ETHER|IFM_10_T; 1238 scp->autoneg_status = XE_AUTONEG_NONE; 1239 /* END HACK */ 1240 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */ 1241 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/ 1242 } 1243 } 1244 else { 1245 #if XE_DEBUG > 1 1246 device_printf(scp->dev, "Autonegotiation failed; trying 100baseTX\n"); 1247 #endif 1248 XE_MII_DUMP(scp); 1249 xe_soft_reset(scp); 1250 if (scp->phy_ok) { 1251 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1252 scp->autoneg_status = XE_AUTONEG_100TX; 1253 callout_reset(&scp->xe_timer, hz * 3, xe_setmedia, scp); 1254 return; 1255 } 1256 else { 1257 scp->autoneg_status = XE_AUTONEG_FAIL; 1258 } 1259 } 1260 break; 1261 1262 case XE_AUTONEG_100TX: 1263 (void)xe_phy_readreg(scp, PHY_BMSR); 1264 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1265 if (bmsr & PHY_BMSR_LINKSTAT) { 1266 #if XE_DEBUG > 1 1267 device_printf(scp->dev, "Got 100baseTX link!\n"); 1268 #endif 1269 XE_MII_DUMP(scp); 1270 XE_SELECT_PAGE(2); 1271 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1272 scp->media = IFM_ETHER|IFM_100_TX; 1273 scp->autoneg_status = XE_AUTONEG_NONE; 1274 } 1275 else { 1276 #if XE_DEBUG > 1 1277 device_printf(scp->dev, "Autonegotiation failed; disabling PHY\n"); 1278 #endif 1279 XE_MII_DUMP(scp); 1280 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1281 XE_SELECT_PAGE(2); 1282 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */ 1283 scp->autoneg_status = XE_AUTONEG_FAIL; 1284 } 1285 break; 1286 } 1287 1288 /* 1289 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then 1290 * either autonegotiation failed, or never got started to begin with. In 1291 * either case, select a suitable 10Mbit media and hope it works. We 1292 * don't need to reset the card again, since it will have been done 1293 * already by the big switch above. 1294 */ 1295 if (scp->autoneg_status == XE_AUTONEG_FAIL) { 1296 #if XE_DEBUG > 1 1297 device_printf(scp->dev, "Selecting 10baseX\n"); 1298 #endif 1299 if (scp->mohawk) { 1300 XE_SELECT_PAGE(0x42); 1301 XE_OUTB(XE_SWC1, 0x80); 1302 scp->media = IFM_ETHER|IFM_10_T; 1303 scp->autoneg_status = XE_AUTONEG_NONE; 1304 } 1305 else { 1306 XE_SELECT_PAGE(4); 1307 XE_OUTB(XE_GPR0, 4); 1308 DELAY(50000); 1309 XE_SELECT_PAGE(0x42); 1310 XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0); 1311 scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2); 1312 scp->autoneg_status = XE_AUTONEG_NONE; 1313 } 1314 } 1315 break; 1316 1317 1318 /* 1319 * If a specific media has been requested, we just reset the card and 1320 * select it (one small exception -- if 100baseTX is requested by there is 1321 * no PHY, we fall back to 10baseT operation). 1322 */ 1323 case IFM_100_TX: /* Force 100baseTX */ 1324 xe_soft_reset(scp); 1325 if (scp->phy_ok) { 1326 #if XE_DEBUG > 1 1327 device_printf(scp->dev, "Selecting 100baseTX\n"); 1328 #endif 1329 XE_SELECT_PAGE(0x42); 1330 XE_OUTB(XE_SWC1, 0); 1331 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1332 XE_SELECT_PAGE(2); 1333 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1334 scp->media |= IFM_100_TX; 1335 break; 1336 } 1337 /* FALLTHROUGH */ 1338 1339 case IFM_10_T: /* Force 10baseT */ 1340 xe_soft_reset(scp); 1341 #if XE_DEBUG > 1 1342 device_printf(scp->dev, "Selecting 10baseT\n"); 1343 #endif 1344 if (scp->phy_ok) { 1345 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1346 XE_SELECT_PAGE(2); 1347 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */ 1348 } 1349 XE_SELECT_PAGE(0x42); 1350 XE_OUTB(XE_SWC1, 0x80); 1351 scp->media |= IFM_10_T; 1352 break; 1353 1354 case IFM_10_2: 1355 xe_soft_reset(scp); 1356 #if XE_DEBUG > 1 1357 device_printf(scp->dev, "Selecting 10base2\n"); 1358 #endif 1359 XE_SELECT_PAGE(0x42); 1360 XE_OUTB(XE_SWC1, 0xc0); 1361 scp->media |= IFM_10_2; 1362 break; 1363 } 1364 1365 1366 /* 1367 * Finally, the LEDs are set to match whatever media was chosen and the 1368 * transmitter is unblocked. 1369 */ 1370 #if XE_DEBUG > 1 1371 device_printf(scp->dev, "Setting LEDs\n"); 1372 #endif 1373 XE_SELECT_PAGE(2); 1374 switch (IFM_SUBTYPE(scp->media)) { 1375 case IFM_100_TX: 1376 case IFM_10_T: 1377 XE_OUTB(XE_LED, 0x3b); 1378 if (scp->dingo) 1379 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */ 1380 break; 1381 1382 case IFM_10_2: 1383 XE_OUTB(XE_LED, 0x3a); 1384 break; 1385 } 1386 1387 /* Restart output? */ 1388 scp->ifp->if_flags &= ~IFF_OACTIVE; 1389 xe_init(scp); 1390 } 1391 1392 1393 /* 1394 * Hard reset (power cycle) the card. 1395 */ 1396 static void 1397 xe_hard_reset(struct xe_softc *scp) { 1398 int s; 1399 1400 #ifdef XE_DEBUG 1401 device_printf(scp->dev, "hard_reset\n"); 1402 #endif 1403 1404 s = splimp(); 1405 1406 /* 1407 * Power cycle the card. 1408 */ 1409 XE_SELECT_PAGE(4); 1410 XE_OUTB(XE_GPR1, 0); /* Power off */ 1411 DELAY(40000); 1412 1413 if (scp->mohawk) 1414 XE_OUTB(XE_GPR1, 1); /* And back on again */ 1415 else 1416 XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */ 1417 DELAY(40000); 1418 XE_SELECT_PAGE(0); 1419 1420 (void)splx(s); 1421 } 1422 1423 1424 /* 1425 * Soft reset the card. Also makes sure that the ML6692 and 10Mbit controller 1426 * are powered up, sets the silicon revision number in softc, disables 1427 * interrupts and checks for the prescence of a 100Mbit PHY. This should 1428 * leave us in a position where we can access the PHY and do media 1429 * selection. The function imposes a 0.5s delay while the hardware powers up. 1430 */ 1431 static void 1432 xe_soft_reset(struct xe_softc *scp) { 1433 int s; 1434 1435 #ifdef XE_DEBUG 1436 device_printf(scp->dev, "soft_reset\n"); 1437 #endif 1438 1439 s = splimp(); 1440 1441 /* 1442 * Reset the card, (again). 1443 */ 1444 XE_SELECT_PAGE(0); 1445 XE_OUTB(XE_CR, XE_CR_SOFT_RESET); 1446 DELAY(40000); 1447 XE_OUTB(XE_CR, 0); 1448 DELAY(40000); 1449 1450 if (scp->mohawk) { 1451 /* 1452 * set GP1 and GP2 as outputs (bits 2 & 3) 1453 * set GP1 low to power on the ML6692 (bit 0) 1454 * set GP2 high to power on the 10Mhz chip (bit 1) 1455 */ 1456 XE_SELECT_PAGE(4); 1457 XE_OUTB(XE_GPR0, 0x0e); 1458 } 1459 1460 /* 1461 * Wait for everything to wake up. 1462 */ 1463 DELAY(500000); 1464 1465 /* 1466 * Get silicon revision number. 1467 */ 1468 XE_SELECT_PAGE(4); 1469 if (scp->mohawk) 1470 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4; 1471 else 1472 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4; 1473 #ifdef XE_DEBUG 1474 device_printf(scp->dev, "silicon revision = %d\n", scp->srev); 1475 #endif 1476 1477 /* 1478 * Shut off interrupts. 1479 */ 1480 xe_disable_intr(scp); 1481 1482 /* 1483 * Check for PHY. 1484 */ 1485 if (scp->mohawk) { 1486 scp->phy_ok = xe_mii_init(scp); 1487 } 1488 1489 XE_SELECT_PAGE(0); 1490 1491 (void)splx(s); 1492 } 1493 1494 1495 /* 1496 * Take interface offline. This is done by powering down the device, which I 1497 * assume means just shutting down the transceiver and Ethernet logic. This 1498 * requires a _hard_ reset to recover from, as we need to power up again. 1499 */ 1500 static void 1501 xe_stop(struct xe_softc *scp) { 1502 int s; 1503 1504 #ifdef XE_DEBUG 1505 device_printf(scp->dev, "stop\n"); 1506 #endif 1507 1508 s = splimp(); 1509 1510 /* 1511 * Shut off interrupts. 1512 */ 1513 xe_disable_intr(scp); 1514 1515 /* 1516 * Power down. 1517 */ 1518 XE_SELECT_PAGE(4); 1519 XE_OUTB(XE_GPR1, 0); 1520 XE_SELECT_PAGE(0); 1521 1522 /* 1523 * ~IFF_RUNNING == interface down. 1524 */ 1525 scp->ifp->if_flags &= ~IFF_RUNNING; 1526 scp->ifp->if_flags &= ~IFF_OACTIVE; 1527 scp->ifp->if_timer = 0; 1528 1529 (void)splx(s); 1530 } 1531 1532 1533 /* 1534 * Enable Ethernet interrupts from the card. 1535 */ 1536 static void 1537 xe_enable_intr(struct xe_softc *scp) { 1538 #ifdef XE_DEBUG 1539 device_printf(scp->dev, "enable_intr\n"); 1540 #endif 1541 1542 XE_SELECT_PAGE(1); 1543 XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */ 1544 XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */ 1545 DELAY(1); 1546 1547 XE_SELECT_PAGE(0); 1548 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */ 1549 if (scp->modem && !scp->dingo) { /* This bit is just magic */ 1550 if (!(XE_INB(0x10) & 0x01)) { 1551 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */ 1552 } 1553 } 1554 } 1555 1556 1557 /* 1558 * Disable all Ethernet interrupts from the card. 1559 */ 1560 static void 1561 xe_disable_intr(struct xe_softc *scp) { 1562 #ifdef XE_DEBUG 1563 device_printf(scp->dev, "disable_intr\n"); 1564 #endif 1565 1566 XE_SELECT_PAGE(0); 1567 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 1568 if (scp->modem && !scp->dingo) { /* More magic (does this work?) */ 1569 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */ 1570 } 1571 1572 XE_SELECT_PAGE(1); 1573 XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */ 1574 XE_OUTB(XE_IMR1, 0); 1575 XE_SELECT_PAGE(0); 1576 } 1577 1578 1579 /* 1580 * Set up multicast filter and promiscuous mode 1581 */ 1582 static void 1583 xe_setmulti(struct xe_softc *scp) { 1584 struct ifnet *ifp; 1585 struct ifmultiaddr *maddr; 1586 int count; 1587 1588 ifp = &scp->arpcom.ac_if; 1589 maddr = ifp->if_multiaddrs.lh_first; 1590 1591 /* Get length of multicast list */ 1592 for (count = 0; maddr != NULL; maddr = maddr->ifma_link.le_next, count++); 1593 1594 if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) { 1595 /* 1596 * Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are 1597 * set, or if we have been asked to deal with more than 9 multicast 1598 * addresses. To do this: set MPE and PME in SWC1 1599 */ 1600 XE_SELECT_PAGE(0x42); 1601 XE_OUTB(XE_SWC1, 0x06); 1602 } 1603 else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) { 1604 /* 1605 * Program the filters for up to 9 addresses 1606 */ 1607 XE_SELECT_PAGE(0x42); 1608 XE_OUTB(XE_SWC1, 0x01); 1609 XE_SELECT_PAGE(0x40); 1610 XE_OUTB(XE_CMD0, XE_CMD0_OFFLINE); 1611 /*xe_reg_dump(scp);*/ 1612 xe_setaddrs(scp); 1613 /*xe_reg_dump(scp);*/ 1614 XE_SELECT_PAGE(0x40); 1615 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); 1616 } 1617 else { 1618 /* 1619 * No multicast operation (default) 1620 */ 1621 XE_SELECT_PAGE(0x42); 1622 XE_OUTB(XE_SWC1, 0); 1623 } 1624 XE_SELECT_PAGE(0); 1625 } 1626 1627 1628 /* 1629 * Set up all on-chip addresses (for multicast). AFAICS, there are 10 1630 * of these things; the first is our MAC address, the other 9 are mcast 1631 * addresses, padded with the MAC address if there aren't enough. 1632 * XXX - This doesn't work right, but I'm not sure why yet. We seem to be 1633 * XXX - doing much the same as the Linux code, which is weird enough that 1634 * XXX - it's probably right (despite my earlier comments to the contrary). 1635 */ 1636 static void 1637 xe_setaddrs(struct xe_softc *scp) { 1638 struct ifmultiaddr *maddr; 1639 u_int8_t *addr; 1640 u_int8_t page, slot, byte, i; 1641 1642 maddr = scp->arpcom.ac_if.if_multiaddrs.lh_first; 1643 1644 XE_SELECT_PAGE(page = 0x50); 1645 1646 for (slot = 0, byte = 8; slot < 10; slot++) { 1647 1648 if (slot == 0) 1649 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1650 else { 1651 while (maddr != NULL && maddr->ifma_addr->sa_family != AF_LINK) 1652 maddr = maddr->ifma_link.le_next; 1653 if (maddr != NULL) 1654 addr = LLADDR((struct sockaddr_dl *)maddr->ifma_addr); 1655 else 1656 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1657 } 1658 1659 for (i = 0; i < 6; i++, byte++) { 1660 #if XE_DEBUG > 2 1661 if (i) 1662 printf(":%x", addr[i]); 1663 else 1664 device_printf(scp->dev, "individual addresses %d: %x", slot, addr[0]); 1665 #endif 1666 1667 if (byte > 15) { 1668 page++; 1669 byte = 8; 1670 XE_SELECT_PAGE(page); 1671 } 1672 1673 if (scp->mohawk) 1674 XE_OUTB(byte, addr[5 - i]); 1675 else 1676 XE_OUTB(byte, addr[i]); 1677 } 1678 #if XE_DEBUG > 2 1679 printf("\n"); 1680 #endif 1681 } 1682 1683 XE_SELECT_PAGE(0); 1684 } 1685 1686 1687 /* 1688 * Write an outgoing packet to the card using programmed I/O. 1689 */ 1690 static int 1691 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) { 1692 struct mbuf *mbp2; 1693 u_int16_t len, pad, free, ok; 1694 u_int8_t *data; 1695 u_int8_t savebyte[2], wantbyte; 1696 1697 /* Get total packet length */ 1698 for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next); 1699 1700 /* Packets < minimum length may need to be padded out */ 1701 pad = 0; 1702 if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) { 1703 pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1; 1704 len = ETHER_MIN_LEN - ETHER_CRC_LEN; 1705 } 1706 1707 /* Check transmit buffer space */ 1708 XE_SELECT_PAGE(0); 1709 XE_OUTW(XE_TRS, len+2); 1710 free = XE_INW(XE_TSO); 1711 ok = free & 0x8000; 1712 free &= 0x7fff; 1713 if (free <= len + 2) 1714 return 1; 1715 1716 /* Send packet length to card */ 1717 XE_OUTW(XE_EDP, len); 1718 1719 /* 1720 * Write packet to card using PIO (code stolen from the ed driver) 1721 */ 1722 wantbyte = 0; 1723 while (mbp != NULL) { 1724 len = mbp->m_len; 1725 if (len > 0) { 1726 data = mtod(mbp, caddr_t); 1727 if (wantbyte) { /* Finish the last word */ 1728 savebyte[1] = *data; 1729 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1730 data++; 1731 len--; 1732 wantbyte = 0; 1733 } 1734 if (len > 1) { /* Output contiguous words */ 1735 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data, 1736 len >> 1); 1737 data += len & ~1; 1738 len &= 1; 1739 } 1740 if (len == 1) { /* Save last byte, if necessary */ 1741 savebyte[0] = *data; 1742 wantbyte = 1; 1743 } 1744 } 1745 mbp = mbp->m_next; 1746 } 1747 if (wantbyte) /* Last byte for odd-length packets */ 1748 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1749 1750 /* 1751 * For CE3 cards, just tell 'em to send -- apparently the card will pad out 1752 * short packets with random cruft. Otherwise, write nonsense words to fill 1753 * out the packet. I guess it is then sent automatically (?) 1754 */ 1755 if (scp->mohawk) 1756 XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR); 1757 else 1758 while (pad > 0) { 1759 XE_OUTW(XE_EDP, 0xdead); 1760 pad--; 1761 } 1762 1763 return 0; 1764 } 1765 1766 #if 0 1767 /* 1768 * Compute the 32-bit Ethernet CRC for the given buffer. 1769 */ 1770 static u_int32_t 1771 xe_compute_crc(u_int8_t *data, int len) { 1772 u_int32_t crc = 0xffffffff; 1773 u_int32_t poly = 0x04c11db6; 1774 u_int8_t current, crc31, bit; 1775 int i, k; 1776 1777 for (i = 0; i < len; i++) { 1778 current = data[i]; 1779 for (k = 1; k <= 8; k++) { 1780 if (crc & 0x80000000) { 1781 crc31 = 0x01; 1782 } 1783 else { 1784 crc31 = 0; 1785 } 1786 bit = crc31 ^ (current & 0x01); 1787 crc <<= 1; 1788 current >>= 1; 1789 if (bit) { 1790 crc = (crc ^ poly)|1; 1791 } 1792 } 1793 } 1794 return crc; 1795 } 1796 1797 1798 /* 1799 * Convert a CRC into an index into the multicast hash table. What we do is 1800 * take the most-significant 6 bits of the CRC, reverse them, and use that as 1801 * the bit number in the hash table. Bits 5:3 of the result give the byte 1802 * within the table (0-7); bits 2:0 give the bit number within that byte (also 1803 * 0-7), ie. the number of shifts needed to get it into the lsb position. 1804 */ 1805 static int 1806 xe_compute_hashbit(u_int32_t crc) { 1807 u_int8_t hashbit = 0; 1808 int i; 1809 1810 for (i = 0; i < 6; i++) { 1811 hashbit >>= 1; 1812 if (crc & 0x80000000) { 1813 hashbit &= 0x80; 1814 } 1815 crc <<= 1; 1816 } 1817 return (hashbit >> 2); 1818 } 1819 1820 #endif 1821 1822 1823 1824 /************************************************************** 1825 * * 1826 * M I I F U N C T I O N S * 1827 * * 1828 **************************************************************/ 1829 1830 /* 1831 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't 1832 * seem to work any better than the xirc2_ps stuff, but it's cleaner code. 1833 * XXX - this stuff shouldn't be here. It should all be abstracted off to 1834 * XXX - some kind of common MII-handling code, shared by all drivers. But 1835 * XXX - that's a whole other mission. 1836 */ 1837 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x)) 1838 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x)) 1839 1840 1841 /* 1842 * Sync the PHYs by setting data bit and strobing the clock 32 times. 1843 */ 1844 static void 1845 xe_mii_sync(struct xe_softc *scp) { 1846 int i; 1847 1848 XE_SELECT_PAGE(2); 1849 XE_MII_SET(XE_MII_DIR|XE_MII_WRD); 1850 1851 for (i = 0; i < 32; i++) { 1852 XE_MII_SET(XE_MII_CLK); 1853 DELAY(1); 1854 XE_MII_CLR(XE_MII_CLK); 1855 DELAY(1); 1856 } 1857 } 1858 1859 1860 /* 1861 * Look for a MII-compliant PHY. If we find one, reset it. 1862 */ 1863 static int 1864 xe_mii_init(struct xe_softc *scp) { 1865 u_int16_t status; 1866 1867 status = xe_phy_readreg(scp, PHY_BMSR); 1868 if ((status & 0xff00) != 0x7800) { 1869 #if XE_DEBUG > 1 1870 device_printf(scp->dev, "no PHY found, %0x\n", status); 1871 #endif 1872 return 0; 1873 } 1874 else { 1875 #if XE_DEBUG > 1 1876 device_printf(scp->dev, "PHY OK!\n"); 1877 #endif 1878 1879 /* Reset the PHY */ 1880 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET); 1881 DELAY(500); 1882 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET); 1883 XE_MII_DUMP(scp); 1884 return 1; 1885 } 1886 } 1887 1888 1889 /* 1890 * Clock a series of bits through the MII. 1891 */ 1892 static void 1893 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) { 1894 int i; 1895 1896 XE_SELECT_PAGE(2); 1897 XE_MII_CLR(XE_MII_CLK); 1898 1899 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 1900 if (bits & i) { 1901 XE_MII_SET(XE_MII_WRD); 1902 } else { 1903 XE_MII_CLR(XE_MII_WRD); 1904 } 1905 DELAY(1); 1906 XE_MII_CLR(XE_MII_CLK); 1907 DELAY(1); 1908 XE_MII_SET(XE_MII_CLK); 1909 } 1910 } 1911 1912 1913 /* 1914 * Read an PHY register through the MII. 1915 */ 1916 static int 1917 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) { 1918 int i, ack, s; 1919 1920 s = splimp(); 1921 1922 /* 1923 * Set up frame for RX. 1924 */ 1925 frame->mii_stdelim = XE_MII_STARTDELIM; 1926 frame->mii_opcode = XE_MII_READOP; 1927 frame->mii_turnaround = 0; 1928 frame->mii_data = 0; 1929 1930 XE_SELECT_PAGE(2); 1931 XE_OUTB(XE_GPR2, 0); 1932 1933 /* 1934 * Turn on data xmit. 1935 */ 1936 XE_MII_SET(XE_MII_DIR); 1937 1938 xe_mii_sync(scp); 1939 1940 /* 1941 * Send command/address info. 1942 */ 1943 xe_mii_send(scp, frame->mii_stdelim, 2); 1944 xe_mii_send(scp, frame->mii_opcode, 2); 1945 xe_mii_send(scp, frame->mii_phyaddr, 5); 1946 xe_mii_send(scp, frame->mii_regaddr, 5); 1947 1948 /* Idle bit */ 1949 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD)); 1950 DELAY(1); 1951 XE_MII_SET(XE_MII_CLK); 1952 DELAY(1); 1953 1954 /* Turn off xmit. */ 1955 XE_MII_CLR(XE_MII_DIR); 1956 1957 /* Check for ack */ 1958 XE_MII_CLR(XE_MII_CLK); 1959 DELAY(1); 1960 ack = XE_INB(XE_GPR2) & XE_MII_RDD; 1961 XE_MII_SET(XE_MII_CLK); 1962 DELAY(1); 1963 1964 /* 1965 * Now try reading data bits. If the ack failed, we still 1966 * need to clock through 16 cycles to keep the PHY(s) in sync. 1967 */ 1968 if (ack) { 1969 for(i = 0; i < 16; i++) { 1970 XE_MII_CLR(XE_MII_CLK); 1971 DELAY(1); 1972 XE_MII_SET(XE_MII_CLK); 1973 DELAY(1); 1974 } 1975 goto fail; 1976 } 1977 1978 for (i = 0x8000; i; i >>= 1) { 1979 XE_MII_CLR(XE_MII_CLK); 1980 DELAY(1); 1981 if (!ack) { 1982 if (XE_INB(XE_GPR2) & XE_MII_RDD) 1983 frame->mii_data |= i; 1984 DELAY(1); 1985 } 1986 XE_MII_SET(XE_MII_CLK); 1987 DELAY(1); 1988 } 1989 1990 fail: 1991 1992 XE_MII_CLR(XE_MII_CLK); 1993 DELAY(1); 1994 XE_MII_SET(XE_MII_CLK); 1995 DELAY(1); 1996 1997 splx(s); 1998 1999 if (ack) 2000 return(1); 2001 return(0); 2002 } 2003 2004 2005 /* 2006 * Write to a PHY register through the MII. 2007 */ 2008 static int 2009 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) { 2010 int s; 2011 2012 s = splimp(); 2013 2014 /* 2015 * Set up frame for TX. 2016 */ 2017 frame->mii_stdelim = XE_MII_STARTDELIM; 2018 frame->mii_opcode = XE_MII_WRITEOP; 2019 frame->mii_turnaround = XE_MII_TURNAROUND; 2020 2021 XE_SELECT_PAGE(2); 2022 2023 /* 2024 * Turn on data output. 2025 */ 2026 XE_MII_SET(XE_MII_DIR); 2027 2028 xe_mii_sync(scp); 2029 2030 xe_mii_send(scp, frame->mii_stdelim, 2); 2031 xe_mii_send(scp, frame->mii_opcode, 2); 2032 xe_mii_send(scp, frame->mii_phyaddr, 5); 2033 xe_mii_send(scp, frame->mii_regaddr, 5); 2034 xe_mii_send(scp, frame->mii_turnaround, 2); 2035 xe_mii_send(scp, frame->mii_data, 16); 2036 2037 /* Idle bit. */ 2038 XE_MII_SET(XE_MII_CLK); 2039 DELAY(1); 2040 XE_MII_CLR(XE_MII_CLK); 2041 DELAY(1); 2042 2043 /* 2044 * Turn off xmit. 2045 */ 2046 XE_MII_CLR(XE_MII_DIR); 2047 2048 splx(s); 2049 2050 return(0); 2051 } 2052 2053 2054 /* 2055 * Read a register from the PHY. 2056 */ 2057 static u_int16_t 2058 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) { 2059 struct xe_mii_frame frame; 2060 2061 bzero((char *)&frame, sizeof(frame)); 2062 2063 frame.mii_phyaddr = 0; 2064 frame.mii_regaddr = reg; 2065 xe_mii_readreg(scp, &frame); 2066 2067 return(frame.mii_data); 2068 } 2069 2070 2071 /* 2072 * Write to a PHY register. 2073 */ 2074 static void 2075 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) { 2076 struct xe_mii_frame frame; 2077 2078 bzero((char *)&frame, sizeof(frame)); 2079 2080 frame.mii_phyaddr = 0; 2081 frame.mii_regaddr = reg; 2082 frame.mii_data = data; 2083 xe_mii_writereg(scp, &frame); 2084 2085 return; 2086 } 2087 2088 2089 #ifdef XE_DEBUG 2090 /* 2091 * A bit of debugging code. 2092 */ 2093 static void 2094 xe_mii_dump(struct xe_softc *scp) { 2095 int i, s; 2096 2097 s = splimp(); 2098 2099 device_printf(scp->dev, "MII registers: "); 2100 for (i = 0; i < 2; i++) { 2101 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 2102 } 2103 for (i = 4; i < 7; i++) { 2104 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 2105 } 2106 printf("\n"); 2107 2108 (void)splx(s); 2109 } 2110 2111 static void 2112 xe_reg_dump(struct xe_softc *scp) { 2113 int page, i, s; 2114 2115 s = splimp(); 2116 2117 device_printf(scp->dev, "Common registers: "); 2118 for (i = 0; i < 8; i++) { 2119 printf(" %2.2x", XE_INB(i)); 2120 } 2121 printf("\n"); 2122 2123 for (page = 0; page <= 8; page++) { 2124 device_printf(scp->dev, "Register page %2.2x: ", page); 2125 XE_SELECT_PAGE(page); 2126 for (i = 8; i < 16; i++) { 2127 printf(" %2.2x", XE_INB(i)); 2128 } 2129 printf("\n"); 2130 } 2131 2132 for (page = 0x10; page < 0x5f; page++) { 2133 if ((page >= 0x11 && page <= 0x3f) || 2134 (page == 0x41) || 2135 (page >= 0x43 && page <= 0x4f) || 2136 (page >= 0x59)) 2137 continue; 2138 device_printf(scp->dev, "Register page %2.2x: ", page); 2139 XE_SELECT_PAGE(page); 2140 for (i = 8; i < 16; i++) { 2141 printf(" %2.2x", XE_INB(i)); 2142 } 2143 printf("\n"); 2144 } 2145 2146 (void)splx(s); 2147 } 2148 #endif 2149 2150 int 2151 xe_activate(device_t dev) 2152 { 2153 struct xe_softc *sc = device_get_softc(dev); 2154 int start, err; 2155 2156 if (!sc->dingo) { 2157 sc->port_rid = 0; /* 0 is managed by pccard */ 2158 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, 2159 &sc->port_rid, 0, ~0, 16, RF_ACTIVE); 2160 } else { 2161 /* 2162 * Find a 16 byte aligned ioport for the card. 2163 */ 2164 #if XE_DEBUG > 0 2165 device_printf(dev, "Finding an aligned port for RealPort\n"); 2166 #endif /* XE_DEBUG */ 2167 sc->port_rid = 1; /* 0 is managed by pccard */ 2168 start = 0x100; 2169 do { 2170 sc->port_res = bus_alloc_resource(dev, 2171 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16, 2172 RF_ACTIVE); 2173 if (sc->port_res == 0) 2174 break; /* we failed */ 2175 if ((rman_get_start(sc->port_res) & 0xf) == 0) 2176 break; /* good */ 2177 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2178 sc->port_res); 2179 start = (rman_get_start(sc->port_res) + 15) & ~0xf; 2180 } while (1); 2181 #if XE_DEBUG > 2 2182 device_printf(dev, "port 0x%0lx, size 0x%0lx\n", 2183 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 2184 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); 2185 #endif /* XE_DEBUG */ 2186 } 2187 if (!sc->port_res) { 2188 #if XE_DEBUG > 0 2189 device_printf(dev, "Cannot allocate ioport\n"); 2190 #endif 2191 return ENOMEM; 2192 } 2193 2194 sc->irq_rid = 0; 2195 sc->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid, 2196 0, ~0, 1, RF_ACTIVE); 2197 if (!sc->irq_res) { 2198 #if XE_DEBUG > 0 2199 device_printf(dev, "Cannot allocate irq\n"); 2200 #endif 2201 xe_deactivate(dev); 2202 return ENOMEM; 2203 } 2204 if ((err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, xe_intr, sc, 2205 &sc->intrhand)) != 0) { 2206 xe_deactivate(dev); 2207 return err; 2208 } 2209 2210 sc->bst = rman_get_bustag(sc->port_res); 2211 sc->bsh = rman_get_bushandle(sc->port_res); 2212 return (0); 2213 } 2214 2215 void 2216 xe_deactivate(device_t dev) 2217 { 2218 struct xe_softc *sc = device_get_softc(dev); 2219 2220 if (sc->intrhand) 2221 bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 2222 sc->intrhand = 0; 2223 if (sc->port_res) 2224 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2225 sc->port_res); 2226 sc->port_res = 0; 2227 if (sc->irq_res) 2228 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, 2229 sc->irq_res); 2230 sc->irq_res = 0; 2231 return; 2232 } 2233 2234 static device_method_t xe_pccard_methods[] = { 2235 /* Device interface */ 2236 DEVMETHOD(device_probe, xe_probe), 2237 DEVMETHOD(device_attach, xe_attach), 2238 DEVMETHOD(device_detach, xe_detach), 2239 2240 { 0, 0 } 2241 }; 2242 2243 static driver_t xe_pccard_driver = { 2244 "xe", 2245 xe_pccard_methods, 2246 sizeof(struct xe_softc), 2247 }; 2248 2249 devclass_t xe_devclass; 2250 2251 DECLARE_DUMMY_MODULE(if_xe); 2252 DRIVER_MODULE(if_xe, pccard, xe_pccard_driver, xe_devclass, 0, 0); 2253 2254