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 1.5 2003/08/07 21:17:07 dillon Exp $ 29 */ 30 31 /* 32 * XXX TODO XXX 33 * 34 * I've pushed this fairly far, but there are some things that need to be 35 * done here. I'm documenting them here in case I get destracted. -- imp 36 * 37 * xe_cem56fix -- need to figure out how to map the extra stuff. 38 */ 39 40 /* 41 * Portions of this software were derived from Werner Koch's xirc2ps driver 42 * for Linux under the terms of the following license (from v1.30 of the 43 * xirc2ps driver): 44 * 45 * Copyright (c) 1997 by Werner Koch (dd9jn) 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, and the entire permission notice in its entirety, 52 * including the disclaimer of warranties. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. The name of the author may not be used to endorse or promote 57 * products derived from this software without specific prior 58 * written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 61 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 63 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 64 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 65 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 66 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 68 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 69 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 70 * OF THE POSSIBILITY OF SUCH DAMAGE. 71 */ 72 73 /* 74 * FreeBSD device driver for Xircom CreditCard PCMCIA Ethernet adapters. The 75 * following cards are currently known to work with the driver: 76 * Xircom CreditCard 10/100 (CE3) 77 * Xircom CreditCard Ethernet + Modem 28 (CEM28) 78 * Xircom CreditCard Ethernet 10/100 + Modem 56 (CEM56) 79 * Xircom RealPort Ethernet 10 80 * Xircom RealPort Ethernet 10/100 81 * Xircom RealPort Ethernet 10/100 + Modem 56 (REM56, REM56G) 82 * Intel EtherExpress Pro/100 PC Card Mobile Adapter 16 (Pro/100 M16A) 83 * Compaq Netelligent 10/100 PC Card (CPQ-10/100) 84 * 85 * Some other cards *should* work, but support for them is either broken or in 86 * an unknown state at the moment. I'm always interested in hearing from 87 * people who own any of these cards: 88 * Xircom CreditCard 10Base-T (PS-CE2-10) 89 * Xircom CreditCard Ethernet + ModemII (CEM2) 90 * Xircom CEM28 and CEM33 Ethernet/Modem cards (may be variants of CEM2?) 91 * 92 * Thanks to all who assisted with the development and testing of the driver, 93 * especially: Werner Koch, Duke Kamstra, Duncan Barclay, Jason George, Dru 94 * Nelson, Mike Kephart, Bill Rainey and Douglas Rand. Apologies if I've left 95 * out anyone who deserves a mention here. 96 * 97 * Special thanks to Ade Lovett for both hosting the mailing list and doing 98 * the CEM56/REM56 support code; and the FreeBSD UK Users' Group for hosting 99 * the web pages. 100 * 101 * Contact points: 102 * 103 * Driver web page: http://ukug.uk.freebsd.org/~scott/xe_drv/ 104 * 105 * Mailing list: http://www.lovett.com/lists/freebsd-xircom/ 106 * or send "subscribe freebsd-xircom" to <majordomo@lovett.com> 107 * 108 * Author email: <scott@uk.freebsd.org> 109 */ 110 111 112 #include <sys/param.h> 113 #include <sys/cdefs.h> 114 #include <sys/errno.h> 115 #include <sys/kernel.h> 116 #include <sys/mbuf.h> 117 #include <sys/select.h> 118 #include <sys/socket.h> 119 #include <sys/sockio.h> 120 #include <sys/systm.h> 121 #include <sys/uio.h> 122 123 #include <sys/module.h> 124 #include <sys/bus.h> 125 126 #include <machine/bus.h> 127 #include <machine/resource.h> 128 #include <sys/rman.h> 129 130 #include <net/ethernet.h> 131 #include <net/if.h> 132 #include <net/if_arp.h> 133 #include <net/if_dl.h> 134 #include <net/if_media.h> 135 #include <net/if_mib.h> 136 #include <net/bpf.h> 137 138 #include <bus/pccard/pccardvar.h> 139 #include "card_if.h" 140 141 #include "if_xereg.h" 142 #include "if_xevar.h" 143 144 #include <machine/clock.h> 145 146 /* 147 * MII command structure 148 */ 149 struct xe_mii_frame { 150 u_int8_t mii_stdelim; 151 u_int8_t mii_opcode; 152 u_int8_t mii_phyaddr; 153 u_int8_t mii_regaddr; 154 u_int8_t mii_turnaround; 155 u_int16_t mii_data; 156 }; 157 158 /* 159 * Media autonegotiation progress constants 160 */ 161 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */ 162 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */ 163 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */ 164 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */ 165 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */ 166 167 168 /* 169 * Prototypes start here 170 */ 171 static int xe_probe (device_t dev); 172 static int xe_attach (device_t dev); 173 static int xe_detach (device_t dev); 174 static int xe_activate (device_t dev); 175 static void xe_deactivate (device_t dev); 176 static void xe_init (void *xscp); 177 static void xe_start (struct ifnet *ifp); 178 static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data); 179 static void xe_watchdog (struct ifnet *ifp); 180 static int xe_media_change (struct ifnet *ifp); 181 static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp); 182 static timeout_t xe_setmedia; 183 static void xe_hard_reset (struct xe_softc *scp); 184 static void xe_soft_reset (struct xe_softc *scp); 185 static void xe_stop (struct xe_softc *scp); 186 static void xe_enable_intr (struct xe_softc *scp); 187 static void xe_disable_intr (struct xe_softc *scp); 188 static void xe_setmulti (struct xe_softc *scp); 189 static void xe_setaddrs (struct xe_softc *scp); 190 static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp); 191 #if 0 192 static u_int32_t xe_compute_crc (u_int8_t *data, int len); 193 static int xe_compute_hashbit (u_int32_t crc); 194 #endif 195 196 /* 197 * MII functions 198 */ 199 static void xe_mii_sync (struct xe_softc *scp); 200 static int xe_mii_init (struct xe_softc *scp); 201 static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt); 202 static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame); 203 static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame); 204 static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg); 205 static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data); 206 207 /* 208 * Debug functions -- uncomment for VERY verbose dignostic information. 209 * Set to 1 for less verbose information 210 */ 211 /* #define XE_DEBUG 2 */ 212 #ifdef XE_DEBUG 213 #define XE_REG_DUMP(scp) xe_reg_dump((scp)) 214 #define XE_MII_DUMP(scp) xe_mii_dump((scp)) 215 static void xe_reg_dump (struct xe_softc *scp); 216 static void xe_mii_dump (struct xe_softc *scp); 217 #else 218 #define XE_REG_DUMP(scp) 219 #define XE_MII_DUMP(scp) 220 #endif 221 222 /* 223 * Fixing for RealPort cards - they need a little furtling to get the 224 * ethernet working 225 */ 226 static int 227 xe_cem56fix(device_t dev) 228 { 229 struct xe_softc *sc = (struct xe_softc *) device_get_softc(dev); 230 bus_space_tag_t bst; 231 bus_space_handle_t bsh; 232 struct resource *r; 233 int rid; 234 int ioport; 235 236 #ifdef XE_DEBUG 237 device_printf(dev, "Hacking your Realport, master\n"); 238 #endif 239 240 #if XE_DEBUG > 1 241 device_printf(dev, "Realport port 0x%0lx, size 0x%0lx\n", 242 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 243 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); 244 #endif 245 246 rid = 0; 247 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE); 248 if (!r) { 249 #if XE_DEBUG > 0 250 device_printf(dev, "Can't map in attribute memory\n"); 251 #endif 252 return -1; 253 } 254 255 bsh = rman_get_bushandle(r); 256 bst = rman_get_bustag(r); 257 258 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid, 259 PCCARD_A_MEM_ATTR); 260 261 bus_space_write_1(bst, bsh, DINGO_ECOR, DINGO_ECOR_IRQ_LEVEL | 262 DINGO_ECOR_INT_ENABLE | 263 DINGO_ECOR_IOB_ENABLE | 264 DINGO_ECOR_ETH_ENABLE); 265 ioport = bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid); 266 bus_space_write_1(bst, bsh, DINGO_EBAR0, ioport & 0xff); 267 bus_space_write_1(bst, bsh, DINGO_EBAR1, (ioport >> 8) & 0xff); 268 269 bus_space_write_1(bst, bsh, DINGO_DCOR0, DINGO_DCOR0_SF_INT); 270 bus_space_write_1(bst, bsh, DINGO_DCOR1, DINGO_DCOR1_INT_LEVEL | 271 DINGO_DCOR1_EEDIO); 272 bus_space_write_1(bst, bsh, DINGO_DCOR2, 0x00); 273 bus_space_write_1(bst, bsh, DINGO_DCOR3, 0x00); 274 bus_space_write_1(bst, bsh, DINGO_DCOR4, 0x00); 275 276 bus_release_resource(dev, SYS_RES_MEMORY, rid, r); 277 278 /* success! */ 279 return 0; 280 } 281 282 /* 283 * PCMCIA probe routine. 284 * Probe and identify the device. Called by the slot manager when the card is 285 * inserted or the machine wakes up from suspend mode. Assmes that the slot 286 * structure has been initialised already. 287 */ 288 static int 289 xe_probe(device_t dev) 290 { 291 struct xe_softc *scp = (struct xe_softc *) device_get_softc(dev); 292 bus_space_tag_t bst; 293 bus_space_handle_t bsh; 294 int buf; 295 u_char ver_str[CISTPL_BUFSIZE>>1]; 296 off_t offs; 297 int success, rc, i; 298 int rid; 299 struct resource *r; 300 301 success = 0; 302 303 #ifdef XE_DEBUG 304 device_printf(dev, "xe: Probing\n"); 305 #endif 306 307 /* Map in the CIS */ 308 rid = 0; 309 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE); 310 if (!r) { 311 #ifdef XE_DEBUG 312 device_printf(dev, "Can't map in cis\n"); 313 #endif 314 return ENOMEM; 315 } 316 bsh = rman_get_bushandle(r); 317 bst = rman_get_bustag(r); 318 buf = 0; 319 320 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid, 321 PCCARD_A_MEM_ATTR); 322 323 /* Grep through CIS looking for relevant tuples */ 324 offs = 0; 325 do { 326 u_int16_t vendor; 327 u_int8_t rev, media, prod; 328 329 switch (CISTPL_TYPE(buf)) { 330 331 case 0x15: /* Grab version string (needed to ID some weird CE2's) */ 332 #if XE_DEBUG > 1 333 device_printf(dev, "Got version string (0x15)\n"); 334 #endif 335 for (i = 0; i < CISTPL_LEN(buf); ver_str[i] = CISTPL_DATA(buf, i++)); 336 ver_str[i] = '\0'; 337 ver_str[(CISTPL_BUFSIZE>>1) - 1] = CISTPL_LEN(buf); 338 success++; 339 break; 340 341 case 0x20: /* Figure out what type of card we have */ 342 #if XE_DEBUG > 1 343 device_printf(dev, "Got card ID (0x20)\n"); 344 #endif 345 vendor = CISTPL_DATA(buf, 0) + (CISTPL_DATA(buf, 1) << 8); 346 rev = CISTPL_DATA(buf, 2); 347 media = CISTPL_DATA(buf, 3); 348 prod = CISTPL_DATA(buf, 4); 349 350 switch (vendor) { /* Get vendor ID */ 351 case 0x0105: 352 scp->vendor = "Xircom"; break; 353 case 0x0138: 354 case 0x0183: 355 scp->vendor = "Compaq"; break; 356 case 0x0089: 357 scp->vendor = "Intel"; break; 358 default: 359 scp->vendor = "Unknown"; 360 } 361 362 if (!((prod & 0x40) && (media & 0x01))) { 363 #if XE_DEBUG > 1 364 device_printf(dev, "Not a PCMCIA Ethernet card!\n"); 365 #endif 366 rc = ENODEV; /* Not a PCMCIA Ethernet device */ 367 } else { 368 if (media & 0x10) { /* Ethernet/modem cards */ 369 #if XE_DEBUG > 1 370 device_printf(dev, "Card is Ethernet/modem combo\n"); 371 #endif 372 scp->modem = 1; 373 switch (prod & 0x0f) { 374 case 1: 375 scp->card_type = "CEM"; break; 376 case 2: 377 scp->ce2 = 1; 378 scp->card_type = "CEM2"; break; 379 case 3: 380 scp->ce2 = 1; 381 scp->card_type = "CEM3"; break; 382 case 4: 383 scp->ce2 = 1; 384 scp->card_type = "CEM33"; break; 385 case 5: 386 scp->mohawk = 1; 387 scp->card_type = "CEM56M"; break; 388 case 6: 389 case 7: /* Some kind of RealPort card */ 390 scp->mohawk = 1; 391 scp->dingo = 1; 392 scp->card_type = "CEM56"; break; 393 default: 394 rc = ENODEV; 395 } 396 } else { /* Ethernet-only cards */ 397 #if XE_DEBUG > 1 398 device_printf(dev, "Card is Ethernet only\n"); 399 #endif 400 switch (prod & 0x0f) { 401 case 1: 402 scp->card_type = "CE"; break; 403 case 2: 404 scp->ce2 = 1; 405 scp->card_type = "CE2"; break; 406 case 3: 407 scp->mohawk = 1; 408 scp->card_type = "CE3"; break; 409 default: 410 rc = ENODEV; 411 } 412 } 413 } 414 success++; 415 break; 416 417 case 0x22: /* Get MAC address */ 418 if ((CISTPL_LEN(buf) == 8) && 419 (CISTPL_DATA(buf, 0) == 0x04) && 420 (CISTPL_DATA(buf, 1) == ETHER_ADDR_LEN)) { 421 #if XE_DEBUG > 1 422 device_printf(dev, "Got MAC address (0x22)\n"); 423 #endif 424 for (i = 0; i < ETHER_ADDR_LEN; i++) 425 scp->arpcom.ac_enaddr[i] = CISTPL_DATA(buf, i+2); 426 } 427 success++; 428 break; 429 default: 430 break; 431 } 432 433 if (CISTPL_TYPE(buf) == 0xff) 434 break; 435 /* Skip to next tuple */ 436 buf += ((CISTPL_LEN(buf) + 2) << 1); 437 438 } while (1); 439 440 /* unmap the cis */ 441 bus_release_resource(dev, SYS_RES_MEMORY, rid, r); 442 443 /* Die now if something went wrong above */ 444 if (success < 3) 445 return ENXIO; 446 447 /* Check for certain strange CE2's that look like CE's */ 448 if (strcmp(scp->card_type, "CE") == 0) { 449 u_char *str = ver_str; 450 #if XE_DEBUG > 1 451 device_printf(dev, "Checking for weird CE2 string\n"); 452 #endif 453 str += strlen(str) + 1; /* Skip forward to 3rd version string */ 454 str += strlen(str) + 1; 455 str += strlen(str) + 1; 456 for (i = 0; i < strlen(str) - 2; i++) { 457 if (bcmp(&str[i], "CE2", 3) ==0) { /* Look for "CE2" string */ 458 scp->card_type = "CE2"; 459 } 460 } 461 } 462 463 /* Reject unsupported cards */ 464 if (strcmp(scp->card_type, "CE") == 0 || strcmp(scp->card_type, "CEM") == 0) { 465 device_printf(dev, "Sorry, your %s card is not supported :(\n", 466 scp->card_type); 467 return ENODEV; 468 } 469 470 /* Success */ 471 return 0; 472 } 473 474 /* 475 * The device entry is being removed, probably because someone ejected the 476 * card. The interface should have been brought down manually before calling 477 * this function; if not you may well lose packets. In any case, I shut down 478 * the card and the interface, and hope for the best. 479 */ 480 static int 481 xe_detach(device_t dev) { 482 struct xe_softc *sc = device_get_softc(dev); 483 484 sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING; 485 ether_ifdetach(&sc->arpcom.ac_if, ETHER_BPF_SUPPORTED); 486 xe_deactivate(dev); 487 return 0; 488 } 489 490 /* 491 * Attach a device. 492 */ 493 static int 494 xe_attach (device_t dev) { 495 struct xe_softc *scp = device_get_softc(dev); 496 int err; 497 498 #ifdef XE_DEBUG 499 device_printf(dev, "attach\n"); 500 #endif 501 502 if ((err = xe_activate(dev)) != 0) 503 return (err); 504 505 /* Fill in some private data */ 506 scp->ifp = &scp->arpcom.ac_if; 507 scp->ifm = &scp->ifmedia; 508 scp->autoneg_status = 0; 509 510 /* Hack RealPorts into submission */ 511 if (scp->dingo && xe_cem56fix(dev) < 0) { 512 device_printf(dev, "Unable to fix your RealPort\n"); 513 xe_deactivate(dev); 514 return ENODEV; 515 } 516 517 /* Hopefully safe to read this here */ 518 XE_SELECT_PAGE(4); 519 scp->version = XE_INB(XE_BOV); 520 521 scp->dev = dev; 522 /* Initialise the ifnet structure */ 523 if (!scp->ifp->if_name) { 524 scp->ifp->if_softc = scp; 525 scp->ifp->if_name = "xe"; 526 scp->ifp->if_unit = device_get_unit(dev); 527 scp->ifp->if_timer = 0; 528 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 529 scp->ifp->if_linkmib = &scp->mibdata; 530 scp->ifp->if_linkmiblen = sizeof scp->mibdata; 531 scp->ifp->if_output = ether_output; 532 scp->ifp->if_start = xe_start; 533 scp->ifp->if_ioctl = xe_ioctl; 534 scp->ifp->if_watchdog = xe_watchdog; 535 scp->ifp->if_init = xe_init; 536 scp->ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 537 } 538 539 /* Initialise the ifmedia structure */ 540 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status); 541 callout_handle_init(&scp->chand); 542 543 /* 544 * Fill in supported media types. Some cards _do_ support full duplex 545 * operation, but this driver doesn't, yet. Therefore we leave those modes 546 * out of the list. We support some form of autoselection in all cases. 547 */ 548 if (scp->mohawk) { 549 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL); 550 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 551 } 552 else { 553 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); 554 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL); 555 } 556 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL); 557 558 /* Default is to autoselect best supported media type */ 559 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO); 560 561 /* Print some useful information */ 562 device_printf(dev, "%s %s, bonding version %#x%s%s\n", 563 scp->vendor, 564 scp->card_type, 565 scp->version, 566 scp->mohawk ? ", 100Mbps capable" : "", 567 scp->modem ? ", with modem" : ""); 568 if (scp->mohawk) { 569 XE_SELECT_PAGE(0x10); 570 device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n", 571 XE_INW(XE_DINGOID), 572 XE_INW(XE_RevID), 573 XE_INW(XE_VendorID)); 574 } 575 if (scp->ce2) { 576 XE_SELECT_PAGE(0x45); 577 device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV)); 578 } 579 580 /* Print MAC address */ 581 device_printf(dev, "Ethernet address %6D\n", scp->arpcom.ac_enaddr, ":"); 582 583 /* Attach the interface */ 584 ether_ifattach(scp->ifp, ETHER_BPF_SUPPORTED); 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 IF_DEQUEUE(&ifp->if_snd, mbp); /* 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 IF_PREPEND(&ifp->if_snd, mbp); /* Push the packet back onto the queue */ 706 ifp->if_flags |= IFF_OACTIVE; 707 return; 708 } 709 710 /* Tap off here if there is a bpf listener */ 711 if (ifp->if_bpf) { 712 #if XE_DEBUG > 1 713 device_printf(scp->dev, "sending output packet to BPF\n"); 714 #endif 715 bpf_mtap(ifp, mbp); 716 } 717 718 ifp->if_timer = 5; /* In case we don't hear from the card again */ 719 scp->tx_queued++; 720 721 m_freem(mbp); 722 } 723 } 724 725 726 /* 727 * Process an ioctl request. Adapted from the ed driver. 728 */ 729 static int 730 xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data) { 731 struct xe_softc *scp; 732 int s, error; 733 734 scp = ifp->if_softc; 735 error = 0; 736 737 s = splimp(); 738 739 switch (command) { 740 741 case SIOCSIFADDR: 742 case SIOCGIFADDR: 743 case SIOCSIFMTU: 744 error = ether_ioctl(ifp, command, data); 745 break; 746 747 case SIOCSIFFLAGS: 748 /* 749 * If the interface is marked up and stopped, then start it. If it is 750 * marked down and running, then stop it. 751 */ 752 if (ifp->if_flags & IFF_UP) { 753 if (!(ifp->if_flags & IFF_RUNNING)) { 754 xe_hard_reset(scp); 755 xe_setmedia(scp); 756 xe_init(scp); 757 } 758 } 759 else { 760 if (ifp->if_flags & IFF_RUNNING) 761 xe_stop(scp); 762 } 763 764 case SIOCADDMULTI: 765 case SIOCDELMULTI: 766 /* 767 * Multicast list has (maybe) changed; set the hardware filter 768 * accordingly. This also serves to deal with promiscuous mode if we have 769 * a BPF listener active. 770 */ 771 xe_setmulti(scp); 772 error = 0; 773 break; 774 775 case SIOCSIFMEDIA: 776 case SIOCGIFMEDIA: 777 /* 778 * Someone wants to get/set media options. 779 */ 780 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command); 781 break; 782 783 default: 784 error = EINVAL; 785 } 786 787 (void)splx(s); 788 789 return error; 790 } 791 792 793 /* 794 * Card interrupt handler. 795 * 796 * This function is probably more complicated than it needs to be, as it 797 * attempts to deal with the case where multiple packets get sent between 798 * interrupts. This is especially annoying when working out the collision 799 * stats. Not sure whether this case ever really happens or not (maybe on a 800 * slow/heavily loaded machine?) so it's probably best to leave this like it 801 * is. 802 * 803 * Note that the crappy PIO used to get packets on and off the card means that 804 * you will spend a lot of time in this routine -- I can get my P150 to spend 805 * 90% of its time servicing interrupts if I really hammer the network. Could 806 * fix this, but then you'd start dropping/losing packets. The moral of this 807 * story? If you want good network performance _and_ some cycles left over to 808 * get your work done, don't buy a Xircom card. Or convince them to tell me 809 * how to do memory-mapped I/O :) 810 */ 811 static void 812 xe_intr(void *xscp) 813 { 814 struct xe_softc *scp = (struct xe_softc *) xscp; 815 struct ifnet *ifp; 816 int result; 817 u_int16_t rx_bytes, rxs, txs; 818 u_int8_t psr, isr, esr, rsr; 819 820 ifp = &scp->arpcom.ac_if; 821 rx_bytes = 0; /* Bytes received on this interrupt */ 822 result = 0; /* Set true if the interrupt is for us */ 823 824 if (scp->mohawk) { 825 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 826 } 827 828 psr = XE_INB(XE_PR); /* Stash the current register page */ 829 830 /* 831 * Read ISR to see what caused this interrupt. Note that this clears the 832 * ISR on CE2 type cards. 833 */ 834 if ((isr = XE_INB(XE_ISR)) && isr != 0xff) { 835 836 result = 1; /* This device did generate an int */ 837 esr = XE_INB(XE_ESR); /* Read the other status registers */ 838 XE_SELECT_PAGE(0x40); 839 rxs = XE_INB(XE_RST0); 840 XE_OUTB(XE_RST0, ~rxs & 0xff); 841 txs = XE_INB(XE_TXST0); 842 txs |= XE_INB(XE_TXST1) << 8; 843 XE_OUTB(XE_TXST0, 0); 844 XE_OUTB(XE_TXST1, 0); 845 XE_SELECT_PAGE(0); 846 847 #if XE_DEBUG > 2 848 printf("xe%d: ISR=%#2.2x ESR=%#2.2x RST=%#2.2x TXST=%#4.4x\n", unit, isr, esr, rxs, txs); 849 #endif 850 851 /* 852 * Handle transmit interrupts 853 */ 854 if (isr & XE_ISR_TX_PACKET) { 855 u_int8_t new_tpr, sent; 856 857 if ((new_tpr = XE_INB(XE_TPR)) < scp->tx_tpr) /* Update packet count */ 858 sent = (0xff - scp->tx_tpr) + new_tpr; /* TPR rolled over */ 859 else 860 sent = new_tpr - scp->tx_tpr; 861 862 if (sent > 0) { /* Packets sent since last interrupt */ 863 scp->tx_tpr = new_tpr; 864 scp->tx_queued -= sent; 865 ifp->if_opackets += sent; 866 ifp->if_collisions += scp->tx_collisions; 867 868 /* 869 * Collision stats are a PITA. If multiples frames have been sent, we 870 * distribute any outstanding collision count equally amongst them. 871 * However, if we're missing interrupts we're quite likely to also 872 * miss some collisions; thus the total count will be off anyway. 873 * Likewise, if we miss a frame dropped due to excessive collisions 874 * any outstanding collisions count will be held against the next 875 * frame to be successfully sent. Hopefully it averages out in the 876 * end! 877 * XXX - This will screw up if tx_collisions/sent > 14. FIX IT! 878 */ 879 switch (scp->tx_collisions) { 880 case 0: 881 break; 882 case 1: 883 scp->mibdata.dot3StatsSingleCollisionFrames++; 884 scp->mibdata.dot3StatsCollFrequencies[0]++; 885 break; 886 default: 887 if (sent == 1) { 888 scp->mibdata.dot3StatsMultipleCollisionFrames++; 889 scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++; 890 } 891 else { /* Distribute across multiple frames */ 892 scp->mibdata.dot3StatsMultipleCollisionFrames += sent; 893 scp->mibdata. 894 dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent; 895 scp->mibdata. 896 dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent; 897 } 898 } 899 scp->tx_collisions = 0; 900 } 901 ifp->if_timer = 0; 902 ifp->if_flags &= ~IFF_OACTIVE; 903 } 904 if (txs & 0x0002) { /* Excessive collisions (packet dropped) */ 905 ifp->if_collisions += 16; 906 ifp->if_oerrors++; 907 scp->tx_collisions = 0; 908 scp->mibdata.dot3StatsExcessiveCollisions++; 909 scp->mibdata.dot3StatsMultipleCollisionFrames++; 910 scp->mibdata.dot3StatsCollFrequencies[15]++; 911 XE_OUTB(XE_CR, XE_CR_RESTART_TX); 912 } 913 if (txs & 0x0040) /* Transmit aborted -- probably collisions */ 914 scp->tx_collisions++; 915 916 917 /* 918 * Handle receive interrupts 919 */ 920 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) { 921 922 if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) { 923 struct ether_header *ehp; 924 struct mbuf *mbp; 925 u_int16_t len; 926 927 len = XE_INW(XE_RBC); 928 929 if (len == 0) 930 continue; 931 932 #if 0 933 /* 934 * Limit the amount of time we spend in this loop, dropping packets if 935 * necessary. The Linux code does this with considerably more 936 * finesse, adjusting the threshold dynamically. 937 */ 938 if ((rx_bytes += len) > 22000) { 939 ifp->if_iqdrops++; 940 scp->mibData.dot3StatsMissedFrames++; 941 XE_OUTW(XE_DO, 0x8000); 942 continue; 943 } 944 #endif 945 946 if (len & 0x01) 947 len++; 948 949 MGETHDR(mbp, M_DONTWAIT, MT_DATA); /* Allocate a header mbuf */ 950 if (mbp != NULL) { 951 mbp->m_pkthdr.rcvif = ifp; 952 mbp->m_pkthdr.len = mbp->m_len = len; 953 954 /* 955 * If the mbuf header isn't big enough for the packet, attach an 956 * mbuf cluster to hold it. The +2 is to allow for the nasty little 957 * alignment hack below. 958 */ 959 if (len + 2 > MHLEN) { 960 MCLGET(mbp, M_DONTWAIT); 961 if ((mbp->m_flags & M_EXT) == 0) { 962 m_freem(mbp); 963 mbp = NULL; 964 } 965 } 966 } 967 968 if (mbp != NULL) { 969 /* 970 * The Ethernet header is 14 bytes long; thus the actual packet data 971 * won't be 32-bit aligned when it's dumped into the mbuf. We 972 * offset everything by 2 bytes to fix this. Apparently the 973 * alignment is important for NFS, damn its eyes. 974 */ 975 mbp->m_data += 2; 976 ehp = mtod(mbp, struct ether_header *); 977 978 /* 979 * Now get the packet, including the Ethernet header and trailer (?) 980 * We use programmed I/O, because we don't know how to do shared 981 * memory with these cards. So yes, it's real slow, and heavy on 982 * the interrupts (CPU on my P150 maxed out at ~950KBps incoming). 983 */ 984 if (scp->srev == 0) { /* Workaround a bug in old cards */ 985 u_short rhs; 986 987 XE_SELECT_PAGE(5); 988 rhs = XE_INW(XE_RHSA); 989 XE_SELECT_PAGE(0); 990 991 rhs += 3; /* Skip control info */ 992 993 if (rhs >= 0x8000) 994 rhs = 0; 995 996 if (rhs + len > 0x8000) { 997 int i; 998 999 /* 1000 * XXX - This i-- seems very wrong, but it's what the Linux guys 1001 * XXX - do. Need someone with an old CE2 to test this for me. 1002 * XXX - 99/3/28: Changed the first i-- to an i++, maybe that'll 1003 * XXX - fix it? It seems as though the previous version would 1004 * XXX - have caused an infinite loop (what, another one?). 1005 */ 1006 for (i = 0; i < len; i++, rhs++) { 1007 ((char *)ehp)[i] = XE_INB(XE_EDP); 1008 if (rhs == 0x8000) { 1009 rhs = 0; 1010 i--; 1011 } 1012 } 1013 } 1014 else 1015 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, 1016 (u_int16_t *) ehp, len >> 1); 1017 } 1018 else 1019 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, 1020 (u_int16_t *) ehp, len >> 1); 1021 1022 /* Deliver packet to upper layers */ 1023 if (mbp != NULL) { 1024 mbp->m_pkthdr.len = mbp->m_len = len - ETHER_HDR_LEN; 1025 mbp->m_data += ETHER_HDR_LEN; /* Strip off Ethernet header */ 1026 ether_input(ifp, ehp, mbp); /* Send the packet on its way */ 1027 ifp->if_ipackets++; /* Success! */ 1028 } 1029 XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */ 1030 } 1031 } 1032 else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */ 1033 scp->mibdata.dot3StatsFrameTooLongs++; 1034 ifp->if_ierrors++; 1035 } 1036 else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */ 1037 scp->mibdata.dot3StatsFCSErrors++; 1038 ifp->if_ierrors++; 1039 } 1040 else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */ 1041 scp->mibdata.dot3StatsAlignmentErrors++; 1042 ifp->if_ierrors++; 1043 } 1044 } 1045 if (rxs & 0x10) { /* Receiver overrun */ 1046 scp->mibdata.dot3StatsInternalMacReceiveErrors++; 1047 ifp->if_ierrors++; 1048 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN); 1049 } 1050 } 1051 1052 XE_SELECT_PAGE(psr); /* Restore saved page */ 1053 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */ 1054 1055 /* Could force an int here, instead of dropping packets? */ 1056 /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */ 1057 1058 return; 1059 } 1060 1061 1062 /* 1063 * Device timeout/watchdog routine. Called automatically if we queue a packet 1064 * for transmission but don't get an interrupt within a specified timeout 1065 * (usually 5 seconds). When this happens we assume the worst and reset the 1066 * card. 1067 */ 1068 static void 1069 xe_watchdog(struct ifnet *ifp) { 1070 struct xe_softc *scp = ifp->if_softc; 1071 1072 device_printf(scp->dev, "watchdog timeout; resetting card\n"); 1073 scp->tx_timeouts++; 1074 ifp->if_oerrors += scp->tx_queued; 1075 xe_stop(scp); 1076 xe_hard_reset(scp); 1077 xe_setmedia(scp); 1078 xe_init(scp); 1079 } 1080 1081 1082 /* 1083 * Change media selection. 1084 */ 1085 static int 1086 xe_media_change(struct ifnet *ifp) { 1087 struct xe_softc *scp = ifp->if_softc; 1088 1089 #ifdef XE_DEBUG 1090 printf("xe%d: media_change\n", ifp->if_unit); 1091 #endif 1092 1093 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER) 1094 return(EINVAL); 1095 1096 /* 1097 * Some card/media combos aren't always possible -- filter those out here. 1098 */ 1099 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO || 1100 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok) 1101 return (EINVAL); 1102 1103 xe_setmedia(scp); 1104 1105 return 0; 1106 } 1107 1108 1109 /* 1110 * Return current media selection. 1111 */ 1112 static void 1113 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) { 1114 1115 #ifdef XE_DEBUG 1116 printf("xe%d: media_status\n", ifp->if_unit); 1117 #endif 1118 1119 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media; 1120 1121 return; 1122 } 1123 1124 1125 /* 1126 * Select active media. 1127 */ 1128 static void xe_setmedia(void *xscp) { 1129 struct xe_softc *scp = xscp; 1130 u_int16_t bmcr, bmsr, anar, lpar; 1131 1132 #ifdef XE_DEBUG 1133 device_printf(scp->dev, "setmedia\n"); 1134 #endif 1135 1136 /* Cancel any pending timeout */ 1137 untimeout(xe_setmedia, scp, scp->chand); 1138 xe_disable_intr(scp); 1139 1140 /* Select media */ 1141 scp->media = IFM_ETHER; 1142 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) { 1143 1144 case IFM_AUTO: /* Autoselect media */ 1145 scp->media = IFM_ETHER|IFM_AUTO; 1146 1147 /* 1148 * Autoselection is really awful. It goes something like this: 1149 * 1150 * Wait until the transmitter goes idle (2sec timeout). 1151 * Reset card 1152 * IF a 100Mbit PHY exists 1153 * Start NWAY autonegotiation (3.5sec timeout) 1154 * IF that succeeds 1155 * Select 100baseTX or 10baseT, whichever was detected 1156 * ELSE 1157 * Reset card 1158 * IF a 100Mbit PHY exists 1159 * Try to force a 100baseTX link (3sec timeout) 1160 * IF that succeeds 1161 * Select 100baseTX 1162 * ELSE 1163 * Disable the PHY 1164 * ENDIF 1165 * ENDIF 1166 * ENDIF 1167 * ENDIF 1168 * IF nothing selected so far 1169 * IF a 100Mbit PHY exists 1170 * Select 10baseT 1171 * ELSE 1172 * Select 10baseT or 10base2, whichever is connected 1173 * ENDIF 1174 * ENDIF 1175 */ 1176 switch (scp->autoneg_status) { 1177 1178 case XE_AUTONEG_NONE: 1179 #if XE_DEBUG > 1 1180 device_printf(scp->dev, "Waiting for idle transmitter\n"); 1181 #endif 1182 scp->arpcom.ac_if.if_flags |= IFF_OACTIVE; 1183 scp->autoneg_status = XE_AUTONEG_WAITING; 1184 scp->chand = timeout(xe_setmedia, scp, hz * 2); 1185 return; 1186 1187 case XE_AUTONEG_WAITING: 1188 xe_soft_reset(scp); 1189 if (scp->phy_ok) { 1190 #if XE_DEBUG > 1 1191 device_printf(scp->dev, "Starting autonegotiation\n"); 1192 #endif 1193 bmcr = xe_phy_readreg(scp, PHY_BMCR); 1194 bmcr &= ~(PHY_BMCR_AUTONEGENBL); 1195 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1196 anar = xe_phy_readreg(scp, PHY_ANAR); 1197 anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL); 1198 anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF; 1199 xe_phy_writereg(scp, PHY_ANAR, anar); 1200 bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; 1201 xe_phy_writereg(scp, PHY_BMCR, bmcr); 1202 scp->autoneg_status = XE_AUTONEG_STARTED; 1203 scp->chand = timeout(xe_setmedia, scp, hz * 7/2); 1204 return; 1205 } 1206 else { 1207 scp->autoneg_status = XE_AUTONEG_FAIL; 1208 } 1209 break; 1210 1211 case XE_AUTONEG_STARTED: 1212 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1213 lpar = xe_phy_readreg(scp, PHY_LPAR); 1214 if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) { 1215 #if XE_DEBUG > 1 1216 device_printf(scp->dev, "Autonegotiation complete!\n"); 1217 #endif 1218 /* 1219 * XXX - Shouldn't have to do this, but (on my hub at least) the 1220 * XXX - transmitter won't work after a successful autoneg. So we see 1221 * XXX - what the negotiation result was and force that mode. I'm 1222 * XXX - sure there is an easy fix for this. 1223 */ 1224 if (lpar & PHY_LPAR_100BTXHALF) { 1225 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1226 XE_MII_DUMP(scp); 1227 XE_SELECT_PAGE(2); 1228 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1229 scp->media = IFM_ETHER|IFM_100_TX; 1230 scp->autoneg_status = XE_AUTONEG_NONE; 1231 } 1232 else { 1233 /* 1234 * XXX - Bit of a hack going on in here. 1235 * XXX - This is derived from Ken Hughes patch to the Linux driver 1236 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B 1237 * XXX - cards. What's a CE3B and how's it differ from a plain CE3? 1238 * XXX - these are the things we need to find out. 1239 */ 1240 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1241 XE_SELECT_PAGE(2); 1242 /* BEGIN HACK */ 1243 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1244 XE_SELECT_PAGE(0x42); 1245 XE_OUTB(XE_SWC1, 0x80); 1246 scp->media = IFM_ETHER|IFM_10_T; 1247 scp->autoneg_status = XE_AUTONEG_NONE; 1248 /* END HACK */ 1249 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */ 1250 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/ 1251 } 1252 } 1253 else { 1254 #if XE_DEBUG > 1 1255 device_printf(scp->dev, "Autonegotiation failed; trying 100baseTX\n"); 1256 #endif 1257 XE_MII_DUMP(scp); 1258 xe_soft_reset(scp); 1259 if (scp->phy_ok) { 1260 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1261 scp->autoneg_status = XE_AUTONEG_100TX; 1262 scp->chand = timeout(xe_setmedia, scp, hz * 3); 1263 return; 1264 } 1265 else { 1266 scp->autoneg_status = XE_AUTONEG_FAIL; 1267 } 1268 } 1269 break; 1270 1271 case XE_AUTONEG_100TX: 1272 (void)xe_phy_readreg(scp, PHY_BMSR); 1273 bmsr = xe_phy_readreg(scp, PHY_BMSR); 1274 if (bmsr & PHY_BMSR_LINKSTAT) { 1275 #if XE_DEBUG > 1 1276 device_printf(scp->dev, "Got 100baseTX link!\n"); 1277 #endif 1278 XE_MII_DUMP(scp); 1279 XE_SELECT_PAGE(2); 1280 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1281 scp->media = IFM_ETHER|IFM_100_TX; 1282 scp->autoneg_status = XE_AUTONEG_NONE; 1283 } 1284 else { 1285 #if XE_DEBUG > 1 1286 device_printf(scp->dev, "Autonegotiation failed; disabling PHY\n"); 1287 #endif 1288 XE_MII_DUMP(scp); 1289 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1290 XE_SELECT_PAGE(2); 1291 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */ 1292 scp->autoneg_status = XE_AUTONEG_FAIL; 1293 } 1294 break; 1295 } 1296 1297 /* 1298 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then 1299 * either autonegotiation failed, or never got started to begin with. In 1300 * either case, select a suitable 10Mbit media and hope it works. We 1301 * don't need to reset the card again, since it will have been done 1302 * already by the big switch above. 1303 */ 1304 if (scp->autoneg_status == XE_AUTONEG_FAIL) { 1305 #if XE_DEBUG > 1 1306 device_printf(scp->dev, "Selecting 10baseX\n"); 1307 #endif 1308 if (scp->mohawk) { 1309 XE_SELECT_PAGE(0x42); 1310 XE_OUTB(XE_SWC1, 0x80); 1311 scp->media = IFM_ETHER|IFM_10_T; 1312 scp->autoneg_status = XE_AUTONEG_NONE; 1313 } 1314 else { 1315 XE_SELECT_PAGE(4); 1316 XE_OUTB(XE_GPR0, 4); 1317 DELAY(50000); 1318 XE_SELECT_PAGE(0x42); 1319 XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0); 1320 scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2); 1321 scp->autoneg_status = XE_AUTONEG_NONE; 1322 } 1323 } 1324 break; 1325 1326 1327 /* 1328 * If a specific media has been requested, we just reset the card and 1329 * select it (one small exception -- if 100baseTX is requested by there is 1330 * no PHY, we fall back to 10baseT operation). 1331 */ 1332 case IFM_100_TX: /* Force 100baseTX */ 1333 xe_soft_reset(scp); 1334 if (scp->phy_ok) { 1335 #if XE_DEBUG > 1 1336 device_printf(scp->dev, "Selecting 100baseTX\n"); 1337 #endif 1338 XE_SELECT_PAGE(0x42); 1339 XE_OUTB(XE_SWC1, 0); 1340 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); 1341 XE_SELECT_PAGE(2); 1342 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); 1343 scp->media |= IFM_100_TX; 1344 break; 1345 } 1346 /* FALLTHROUGH */ 1347 1348 case IFM_10_T: /* Force 10baseT */ 1349 xe_soft_reset(scp); 1350 #if XE_DEBUG > 1 1351 device_printf(scp->dev, "Selecting 10baseT\n"); 1352 #endif 1353 if (scp->phy_ok) { 1354 xe_phy_writereg(scp, PHY_BMCR, 0x0000); 1355 XE_SELECT_PAGE(2); 1356 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */ 1357 } 1358 XE_SELECT_PAGE(0x42); 1359 XE_OUTB(XE_SWC1, 0x80); 1360 scp->media |= IFM_10_T; 1361 break; 1362 1363 case IFM_10_2: 1364 xe_soft_reset(scp); 1365 #if XE_DEBUG > 1 1366 device_printf(scp->dev, "Selecting 10base2\n"); 1367 #endif 1368 XE_SELECT_PAGE(0x42); 1369 XE_OUTB(XE_SWC1, 0xc0); 1370 scp->media |= IFM_10_2; 1371 break; 1372 } 1373 1374 1375 /* 1376 * Finally, the LEDs are set to match whatever media was chosen and the 1377 * transmitter is unblocked. 1378 */ 1379 #if XE_DEBUG > 1 1380 device_printf(scp->dev, "Setting LEDs\n"); 1381 #endif 1382 XE_SELECT_PAGE(2); 1383 switch (IFM_SUBTYPE(scp->media)) { 1384 case IFM_100_TX: 1385 case IFM_10_T: 1386 XE_OUTB(XE_LED, 0x3b); 1387 if (scp->dingo) 1388 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */ 1389 break; 1390 1391 case IFM_10_2: 1392 XE_OUTB(XE_LED, 0x3a); 1393 break; 1394 } 1395 1396 /* Restart output? */ 1397 scp->ifp->if_flags &= ~IFF_OACTIVE; 1398 xe_init(scp); 1399 } 1400 1401 1402 /* 1403 * Hard reset (power cycle) the card. 1404 */ 1405 static void 1406 xe_hard_reset(struct xe_softc *scp) { 1407 int s; 1408 1409 #ifdef XE_DEBUG 1410 device_printf(scp->dev, "hard_reset\n"); 1411 #endif 1412 1413 s = splimp(); 1414 1415 /* 1416 * Power cycle the card. 1417 */ 1418 XE_SELECT_PAGE(4); 1419 XE_OUTB(XE_GPR1, 0); /* Power off */ 1420 DELAY(40000); 1421 1422 if (scp->mohawk) 1423 XE_OUTB(XE_GPR1, 1); /* And back on again */ 1424 else 1425 XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */ 1426 DELAY(40000); 1427 XE_SELECT_PAGE(0); 1428 1429 (void)splx(s); 1430 } 1431 1432 1433 /* 1434 * Soft reset the card. Also makes sure that the ML6692 and 10Mbit controller 1435 * are powered up, sets the silicon revision number in softc, disables 1436 * interrupts and checks for the prescence of a 100Mbit PHY. This should 1437 * leave us in a position where we can access the PHY and do media 1438 * selection. The function imposes a 0.5s delay while the hardware powers up. 1439 */ 1440 static void 1441 xe_soft_reset(struct xe_softc *scp) { 1442 int s; 1443 1444 #ifdef XE_DEBUG 1445 device_printf(scp->dev, "soft_reset\n"); 1446 #endif 1447 1448 s = splimp(); 1449 1450 /* 1451 * Reset the card, (again). 1452 */ 1453 XE_SELECT_PAGE(0); 1454 XE_OUTB(XE_CR, XE_CR_SOFT_RESET); 1455 DELAY(40000); 1456 XE_OUTB(XE_CR, 0); 1457 DELAY(40000); 1458 1459 if (scp->mohawk) { 1460 /* 1461 * set GP1 and GP2 as outputs (bits 2 & 3) 1462 * set GP1 low to power on the ML6692 (bit 0) 1463 * set GP2 high to power on the 10Mhz chip (bit 1) 1464 */ 1465 XE_SELECT_PAGE(4); 1466 XE_OUTB(XE_GPR0, 0x0e); 1467 } 1468 1469 /* 1470 * Wait for everything to wake up. 1471 */ 1472 DELAY(500000); 1473 1474 /* 1475 * Get silicon revision number. 1476 */ 1477 XE_SELECT_PAGE(4); 1478 if (scp->mohawk) 1479 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4; 1480 else 1481 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4; 1482 #ifdef XE_DEBUG 1483 device_printf(scp->dev, "silicon revision = %d\n", scp->srev); 1484 #endif 1485 1486 /* 1487 * Shut off interrupts. 1488 */ 1489 xe_disable_intr(scp); 1490 1491 /* 1492 * Check for PHY. 1493 */ 1494 if (scp->mohawk) { 1495 scp->phy_ok = xe_mii_init(scp); 1496 } 1497 1498 XE_SELECT_PAGE(0); 1499 1500 (void)splx(s); 1501 } 1502 1503 1504 /* 1505 * Take interface offline. This is done by powering down the device, which I 1506 * assume means just shutting down the transceiver and Ethernet logic. This 1507 * requires a _hard_ reset to recover from, as we need to power up again. 1508 */ 1509 static void 1510 xe_stop(struct xe_softc *scp) { 1511 int s; 1512 1513 #ifdef XE_DEBUG 1514 device_printf(scp->dev, "stop\n"); 1515 #endif 1516 1517 s = splimp(); 1518 1519 /* 1520 * Shut off interrupts. 1521 */ 1522 xe_disable_intr(scp); 1523 1524 /* 1525 * Power down. 1526 */ 1527 XE_SELECT_PAGE(4); 1528 XE_OUTB(XE_GPR1, 0); 1529 XE_SELECT_PAGE(0); 1530 1531 /* 1532 * ~IFF_RUNNING == interface down. 1533 */ 1534 scp->ifp->if_flags &= ~IFF_RUNNING; 1535 scp->ifp->if_flags &= ~IFF_OACTIVE; 1536 scp->ifp->if_timer = 0; 1537 1538 (void)splx(s); 1539 } 1540 1541 1542 /* 1543 * Enable Ethernet interrupts from the card. 1544 */ 1545 static void 1546 xe_enable_intr(struct xe_softc *scp) { 1547 #ifdef XE_DEBUG 1548 device_printf(scp->dev, "enable_intr\n"); 1549 #endif 1550 1551 XE_SELECT_PAGE(1); 1552 XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */ 1553 XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */ 1554 DELAY(1); 1555 1556 XE_SELECT_PAGE(0); 1557 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */ 1558 if (scp->modem && !scp->dingo) { /* This bit is just magic */ 1559 if (!(XE_INB(0x10) & 0x01)) { 1560 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */ 1561 } 1562 } 1563 } 1564 1565 1566 /* 1567 * Disable all Ethernet interrupts from the card. 1568 */ 1569 static void 1570 xe_disable_intr(struct xe_softc *scp) { 1571 #ifdef XE_DEBUG 1572 device_printf(scp->dev, "disable_intr\n"); 1573 #endif 1574 1575 XE_SELECT_PAGE(0); 1576 XE_OUTB(XE_CR, 0); /* Disable interrupts */ 1577 if (scp->modem && !scp->dingo) { /* More magic (does this work?) */ 1578 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */ 1579 } 1580 1581 XE_SELECT_PAGE(1); 1582 XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */ 1583 XE_OUTB(XE_IMR1, 0); 1584 XE_SELECT_PAGE(0); 1585 } 1586 1587 1588 /* 1589 * Set up multicast filter and promiscuous mode 1590 */ 1591 static void 1592 xe_setmulti(struct xe_softc *scp) { 1593 struct ifnet *ifp; 1594 struct ifmultiaddr *maddr; 1595 int count; 1596 1597 ifp = &scp->arpcom.ac_if; 1598 maddr = ifp->if_multiaddrs.lh_first; 1599 1600 /* Get length of multicast list */ 1601 for (count = 0; maddr != NULL; maddr = maddr->ifma_link.le_next, count++); 1602 1603 if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) { 1604 /* 1605 * Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are 1606 * set, or if we have been asked to deal with more than 9 multicast 1607 * addresses. To do this: set MPE and PME in SWC1 1608 */ 1609 XE_SELECT_PAGE(0x42); 1610 XE_OUTB(XE_SWC1, 0x06); 1611 } 1612 else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) { 1613 /* 1614 * Program the filters for up to 9 addresses 1615 */ 1616 XE_SELECT_PAGE(0x42); 1617 XE_OUTB(XE_SWC1, 0x01); 1618 XE_SELECT_PAGE(0x40); 1619 XE_OUTB(XE_CMD0, XE_CMD0_OFFLINE); 1620 /*xe_reg_dump(scp);*/ 1621 xe_setaddrs(scp); 1622 /*xe_reg_dump(scp);*/ 1623 XE_SELECT_PAGE(0x40); 1624 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); 1625 } 1626 else { 1627 /* 1628 * No multicast operation (default) 1629 */ 1630 XE_SELECT_PAGE(0x42); 1631 XE_OUTB(XE_SWC1, 0); 1632 } 1633 XE_SELECT_PAGE(0); 1634 } 1635 1636 1637 /* 1638 * Set up all on-chip addresses (for multicast). AFAICS, there are 10 1639 * of these things; the first is our MAC address, the other 9 are mcast 1640 * addresses, padded with the MAC address if there aren't enough. 1641 * XXX - This doesn't work right, but I'm not sure why yet. We seem to be 1642 * XXX - doing much the same as the Linux code, which is weird enough that 1643 * XXX - it's probably right (despite my earlier comments to the contrary). 1644 */ 1645 static void 1646 xe_setaddrs(struct xe_softc *scp) { 1647 struct ifmultiaddr *maddr; 1648 u_int8_t *addr; 1649 u_int8_t page, slot, byte, i; 1650 1651 maddr = scp->arpcom.ac_if.if_multiaddrs.lh_first; 1652 1653 XE_SELECT_PAGE(page = 0x50); 1654 1655 for (slot = 0, byte = 8; slot < 10; slot++) { 1656 1657 if (slot == 0) 1658 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1659 else { 1660 while (maddr != NULL && maddr->ifma_addr->sa_family != AF_LINK) 1661 maddr = maddr->ifma_link.le_next; 1662 if (maddr != NULL) 1663 addr = LLADDR((struct sockaddr_dl *)maddr->ifma_addr); 1664 else 1665 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); 1666 } 1667 1668 for (i = 0; i < 6; i++, byte++) { 1669 #if XE_DEBUG > 2 1670 if (i) 1671 printf(":%x", addr[i]); 1672 else 1673 device_printf(scp->dev, "individual addresses %d: %x", slot, addr[0]); 1674 #endif 1675 1676 if (byte > 15) { 1677 page++; 1678 byte = 8; 1679 XE_SELECT_PAGE(page); 1680 } 1681 1682 if (scp->mohawk) 1683 XE_OUTB(byte, addr[5 - i]); 1684 else 1685 XE_OUTB(byte, addr[i]); 1686 } 1687 #if XE_DEBUG > 2 1688 printf("\n"); 1689 #endif 1690 } 1691 1692 XE_SELECT_PAGE(0); 1693 } 1694 1695 1696 /* 1697 * Write an outgoing packet to the card using programmed I/O. 1698 */ 1699 static int 1700 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) { 1701 struct mbuf *mbp2; 1702 u_int16_t len, pad, free, ok; 1703 u_int8_t *data; 1704 u_int8_t savebyte[2], wantbyte; 1705 1706 /* Get total packet length */ 1707 for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next); 1708 1709 /* Packets < minimum length may need to be padded out */ 1710 pad = 0; 1711 if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) { 1712 pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1; 1713 len = ETHER_MIN_LEN - ETHER_CRC_LEN; 1714 } 1715 1716 /* Check transmit buffer space */ 1717 XE_SELECT_PAGE(0); 1718 XE_OUTW(XE_TRS, len+2); 1719 free = XE_INW(XE_TSO); 1720 ok = free & 0x8000; 1721 free &= 0x7fff; 1722 if (free <= len + 2) 1723 return 1; 1724 1725 /* Send packet length to card */ 1726 XE_OUTW(XE_EDP, len); 1727 1728 /* 1729 * Write packet to card using PIO (code stolen from the ed driver) 1730 */ 1731 wantbyte = 0; 1732 while (mbp != NULL) { 1733 len = mbp->m_len; 1734 if (len > 0) { 1735 data = mtod(mbp, caddr_t); 1736 if (wantbyte) { /* Finish the last word */ 1737 savebyte[1] = *data; 1738 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1739 data++; 1740 len--; 1741 wantbyte = 0; 1742 } 1743 if (len > 1) { /* Output contiguous words */ 1744 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data, 1745 len >> 1); 1746 data += len & ~1; 1747 len &= 1; 1748 } 1749 if (len == 1) { /* Save last byte, if necessary */ 1750 savebyte[0] = *data; 1751 wantbyte = 1; 1752 } 1753 } 1754 mbp = mbp->m_next; 1755 } 1756 if (wantbyte) /* Last byte for odd-length packets */ 1757 XE_OUTW(XE_EDP, *(u_short *)savebyte); 1758 1759 /* 1760 * For CE3 cards, just tell 'em to send -- apparently the card will pad out 1761 * short packets with random cruft. Otherwise, write nonsense words to fill 1762 * out the packet. I guess it is then sent automatically (?) 1763 */ 1764 if (scp->mohawk) 1765 XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR); 1766 else 1767 while (pad > 0) { 1768 XE_OUTW(XE_EDP, 0xdead); 1769 pad--; 1770 } 1771 1772 return 0; 1773 } 1774 1775 #if 0 1776 /* 1777 * Compute the 32-bit Ethernet CRC for the given buffer. 1778 */ 1779 static u_int32_t 1780 xe_compute_crc(u_int8_t *data, int len) { 1781 u_int32_t crc = 0xffffffff; 1782 u_int32_t poly = 0x04c11db6; 1783 u_int8_t current, crc31, bit; 1784 int i, k; 1785 1786 for (i = 0; i < len; i++) { 1787 current = data[i]; 1788 for (k = 1; k <= 8; k++) { 1789 if (crc & 0x80000000) { 1790 crc31 = 0x01; 1791 } 1792 else { 1793 crc31 = 0; 1794 } 1795 bit = crc31 ^ (current & 0x01); 1796 crc <<= 1; 1797 current >>= 1; 1798 if (bit) { 1799 crc = (crc ^ poly)|1; 1800 } 1801 } 1802 } 1803 return crc; 1804 } 1805 1806 1807 /* 1808 * Convert a CRC into an index into the multicast hash table. What we do is 1809 * take the most-significant 6 bits of the CRC, reverse them, and use that as 1810 * the bit number in the hash table. Bits 5:3 of the result give the byte 1811 * within the table (0-7); bits 2:0 give the bit number within that byte (also 1812 * 0-7), ie. the number of shifts needed to get it into the lsb position. 1813 */ 1814 static int 1815 xe_compute_hashbit(u_int32_t crc) { 1816 u_int8_t hashbit = 0; 1817 int i; 1818 1819 for (i = 0; i < 6; i++) { 1820 hashbit >>= 1; 1821 if (crc & 0x80000000) { 1822 hashbit &= 0x80; 1823 } 1824 crc <<= 1; 1825 } 1826 return (hashbit >> 2); 1827 } 1828 1829 #endif 1830 1831 1832 1833 /************************************************************** 1834 * * 1835 * M I I F U N C T I O N S * 1836 * * 1837 **************************************************************/ 1838 1839 /* 1840 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't 1841 * seem to work any better than the xirc2_ps stuff, but it's cleaner code. 1842 * XXX - this stuff shouldn't be here. It should all be abstracted off to 1843 * XXX - some kind of common MII-handling code, shared by all drivers. But 1844 * XXX - that's a whole other mission. 1845 */ 1846 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x)) 1847 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x)) 1848 1849 1850 /* 1851 * Sync the PHYs by setting data bit and strobing the clock 32 times. 1852 */ 1853 static void 1854 xe_mii_sync(struct xe_softc *scp) { 1855 int i; 1856 1857 XE_SELECT_PAGE(2); 1858 XE_MII_SET(XE_MII_DIR|XE_MII_WRD); 1859 1860 for (i = 0; i < 32; i++) { 1861 XE_MII_SET(XE_MII_CLK); 1862 DELAY(1); 1863 XE_MII_CLR(XE_MII_CLK); 1864 DELAY(1); 1865 } 1866 } 1867 1868 1869 /* 1870 * Look for a MII-compliant PHY. If we find one, reset it. 1871 */ 1872 static int 1873 xe_mii_init(struct xe_softc *scp) { 1874 u_int16_t status; 1875 1876 status = xe_phy_readreg(scp, PHY_BMSR); 1877 if ((status & 0xff00) != 0x7800) { 1878 #if XE_DEBUG > 1 1879 device_printf(scp->dev, "no PHY found, %0x\n", status); 1880 #endif 1881 return 0; 1882 } 1883 else { 1884 #if XE_DEBUG > 1 1885 device_printf(scp->dev, "PHY OK!\n"); 1886 #endif 1887 1888 /* Reset the PHY */ 1889 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET); 1890 DELAY(500); 1891 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET); 1892 XE_MII_DUMP(scp); 1893 return 1; 1894 } 1895 } 1896 1897 1898 /* 1899 * Clock a series of bits through the MII. 1900 */ 1901 static void 1902 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) { 1903 int i; 1904 1905 XE_SELECT_PAGE(2); 1906 XE_MII_CLR(XE_MII_CLK); 1907 1908 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 1909 if (bits & i) { 1910 XE_MII_SET(XE_MII_WRD); 1911 } else { 1912 XE_MII_CLR(XE_MII_WRD); 1913 } 1914 DELAY(1); 1915 XE_MII_CLR(XE_MII_CLK); 1916 DELAY(1); 1917 XE_MII_SET(XE_MII_CLK); 1918 } 1919 } 1920 1921 1922 /* 1923 * Read an PHY register through the MII. 1924 */ 1925 static int 1926 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) { 1927 int i, ack, s; 1928 1929 s = splimp(); 1930 1931 /* 1932 * Set up frame for RX. 1933 */ 1934 frame->mii_stdelim = XE_MII_STARTDELIM; 1935 frame->mii_opcode = XE_MII_READOP; 1936 frame->mii_turnaround = 0; 1937 frame->mii_data = 0; 1938 1939 XE_SELECT_PAGE(2); 1940 XE_OUTB(XE_GPR2, 0); 1941 1942 /* 1943 * Turn on data xmit. 1944 */ 1945 XE_MII_SET(XE_MII_DIR); 1946 1947 xe_mii_sync(scp); 1948 1949 /* 1950 * Send command/address info. 1951 */ 1952 xe_mii_send(scp, frame->mii_stdelim, 2); 1953 xe_mii_send(scp, frame->mii_opcode, 2); 1954 xe_mii_send(scp, frame->mii_phyaddr, 5); 1955 xe_mii_send(scp, frame->mii_regaddr, 5); 1956 1957 /* Idle bit */ 1958 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD)); 1959 DELAY(1); 1960 XE_MII_SET(XE_MII_CLK); 1961 DELAY(1); 1962 1963 /* Turn off xmit. */ 1964 XE_MII_CLR(XE_MII_DIR); 1965 1966 /* Check for ack */ 1967 XE_MII_CLR(XE_MII_CLK); 1968 DELAY(1); 1969 ack = XE_INB(XE_GPR2) & XE_MII_RDD; 1970 XE_MII_SET(XE_MII_CLK); 1971 DELAY(1); 1972 1973 /* 1974 * Now try reading data bits. If the ack failed, we still 1975 * need to clock through 16 cycles to keep the PHY(s) in sync. 1976 */ 1977 if (ack) { 1978 for(i = 0; i < 16; i++) { 1979 XE_MII_CLR(XE_MII_CLK); 1980 DELAY(1); 1981 XE_MII_SET(XE_MII_CLK); 1982 DELAY(1); 1983 } 1984 goto fail; 1985 } 1986 1987 for (i = 0x8000; i; i >>= 1) { 1988 XE_MII_CLR(XE_MII_CLK); 1989 DELAY(1); 1990 if (!ack) { 1991 if (XE_INB(XE_GPR2) & XE_MII_RDD) 1992 frame->mii_data |= i; 1993 DELAY(1); 1994 } 1995 XE_MII_SET(XE_MII_CLK); 1996 DELAY(1); 1997 } 1998 1999 fail: 2000 2001 XE_MII_CLR(XE_MII_CLK); 2002 DELAY(1); 2003 XE_MII_SET(XE_MII_CLK); 2004 DELAY(1); 2005 2006 splx(s); 2007 2008 if (ack) 2009 return(1); 2010 return(0); 2011 } 2012 2013 2014 /* 2015 * Write to a PHY register through the MII. 2016 */ 2017 static int 2018 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) { 2019 int s; 2020 2021 s = splimp(); 2022 2023 /* 2024 * Set up frame for TX. 2025 */ 2026 frame->mii_stdelim = XE_MII_STARTDELIM; 2027 frame->mii_opcode = XE_MII_WRITEOP; 2028 frame->mii_turnaround = XE_MII_TURNAROUND; 2029 2030 XE_SELECT_PAGE(2); 2031 2032 /* 2033 * Turn on data output. 2034 */ 2035 XE_MII_SET(XE_MII_DIR); 2036 2037 xe_mii_sync(scp); 2038 2039 xe_mii_send(scp, frame->mii_stdelim, 2); 2040 xe_mii_send(scp, frame->mii_opcode, 2); 2041 xe_mii_send(scp, frame->mii_phyaddr, 5); 2042 xe_mii_send(scp, frame->mii_regaddr, 5); 2043 xe_mii_send(scp, frame->mii_turnaround, 2); 2044 xe_mii_send(scp, frame->mii_data, 16); 2045 2046 /* Idle bit. */ 2047 XE_MII_SET(XE_MII_CLK); 2048 DELAY(1); 2049 XE_MII_CLR(XE_MII_CLK); 2050 DELAY(1); 2051 2052 /* 2053 * Turn off xmit. 2054 */ 2055 XE_MII_CLR(XE_MII_DIR); 2056 2057 splx(s); 2058 2059 return(0); 2060 } 2061 2062 2063 /* 2064 * Read a register from the PHY. 2065 */ 2066 static u_int16_t 2067 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) { 2068 struct xe_mii_frame frame; 2069 2070 bzero((char *)&frame, sizeof(frame)); 2071 2072 frame.mii_phyaddr = 0; 2073 frame.mii_regaddr = reg; 2074 xe_mii_readreg(scp, &frame); 2075 2076 return(frame.mii_data); 2077 } 2078 2079 2080 /* 2081 * Write to a PHY register. 2082 */ 2083 static void 2084 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) { 2085 struct xe_mii_frame frame; 2086 2087 bzero((char *)&frame, sizeof(frame)); 2088 2089 frame.mii_phyaddr = 0; 2090 frame.mii_regaddr = reg; 2091 frame.mii_data = data; 2092 xe_mii_writereg(scp, &frame); 2093 2094 return; 2095 } 2096 2097 2098 #ifdef XE_DEBUG 2099 /* 2100 * A bit of debugging code. 2101 */ 2102 static void 2103 xe_mii_dump(struct xe_softc *scp) { 2104 int i, s; 2105 2106 s = splimp(); 2107 2108 device_printf(scp->dev, "MII registers: "); 2109 for (i = 0; i < 2; i++) { 2110 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 2111 } 2112 for (i = 4; i < 7; i++) { 2113 printf(" %d:%04x", i, xe_phy_readreg(scp, i)); 2114 } 2115 printf("\n"); 2116 2117 (void)splx(s); 2118 } 2119 2120 static void 2121 xe_reg_dump(struct xe_softc *scp) { 2122 int page, i, s; 2123 2124 s = splimp(); 2125 2126 device_printf(scp->dev, "Common registers: "); 2127 for (i = 0; i < 8; i++) { 2128 printf(" %2.2x", XE_INB(i)); 2129 } 2130 printf("\n"); 2131 2132 for (page = 0; page <= 8; page++) { 2133 device_printf(scp->dev, "Register page %2.2x: ", page); 2134 XE_SELECT_PAGE(page); 2135 for (i = 8; i < 16; i++) { 2136 printf(" %2.2x", XE_INB(i)); 2137 } 2138 printf("\n"); 2139 } 2140 2141 for (page = 0x10; page < 0x5f; page++) { 2142 if ((page >= 0x11 && page <= 0x3f) || 2143 (page == 0x41) || 2144 (page >= 0x43 && page <= 0x4f) || 2145 (page >= 0x59)) 2146 continue; 2147 device_printf(scp->dev, "Register page %2.2x: ", page); 2148 XE_SELECT_PAGE(page); 2149 for (i = 8; i < 16; i++) { 2150 printf(" %2.2x", XE_INB(i)); 2151 } 2152 printf("\n"); 2153 } 2154 2155 (void)splx(s); 2156 } 2157 #endif 2158 2159 int 2160 xe_activate(device_t dev) 2161 { 2162 struct xe_softc *sc = device_get_softc(dev); 2163 int start, err; 2164 2165 if (!sc->dingo) { 2166 sc->port_rid = 0; /* 0 is managed by pccard */ 2167 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, 2168 &sc->port_rid, 0, ~0, 16, RF_ACTIVE); 2169 } else { 2170 /* 2171 * Find a 16 byte aligned ioport for the card. 2172 */ 2173 #if XE_DEBUG > 0 2174 device_printf(dev, "Finding an aligned port for RealPort\n"); 2175 #endif /* XE_DEBUG */ 2176 sc->port_rid = 1; /* 0 is managed by pccard */ 2177 start = 0x100; 2178 do { 2179 sc->port_res = bus_alloc_resource(dev, 2180 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16, 2181 RF_ACTIVE); 2182 if (sc->port_res == 0) 2183 break; /* we failed */ 2184 if ((rman_get_start(sc->port_res) & 0xf) == 0) 2185 break; /* good */ 2186 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2187 sc->port_res); 2188 start = (rman_get_start(sc->port_res) + 15) & ~0xf; 2189 } while (1); 2190 #if XE_DEBUG > 2 2191 device_printf(dev, "port 0x%0lx, size 0x%0lx\n", 2192 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), 2193 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); 2194 #endif /* XE_DEBUG */ 2195 } 2196 if (!sc->port_res) { 2197 #if XE_DEBUG > 0 2198 device_printf(dev, "Cannot allocate ioport\n"); 2199 #endif 2200 return ENOMEM; 2201 } 2202 2203 sc->irq_rid = 0; 2204 sc->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid, 2205 0, ~0, 1, RF_ACTIVE); 2206 if (!sc->irq_res) { 2207 #if XE_DEBUG > 0 2208 device_printf(dev, "Cannot allocate irq\n"); 2209 #endif 2210 xe_deactivate(dev); 2211 return ENOMEM; 2212 } 2213 if ((err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, xe_intr, sc, 2214 &sc->intrhand)) != 0) { 2215 xe_deactivate(dev); 2216 return err; 2217 } 2218 2219 sc->bst = rman_get_bustag(sc->port_res); 2220 sc->bsh = rman_get_bushandle(sc->port_res); 2221 return (0); 2222 } 2223 2224 void 2225 xe_deactivate(device_t dev) 2226 { 2227 struct xe_softc *sc = device_get_softc(dev); 2228 2229 if (sc->intrhand) 2230 bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 2231 sc->intrhand = 0; 2232 if (sc->port_res) 2233 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, 2234 sc->port_res); 2235 sc->port_res = 0; 2236 if (sc->irq_res) 2237 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, 2238 sc->irq_res); 2239 sc->irq_res = 0; 2240 return; 2241 } 2242 2243 static device_method_t xe_pccard_methods[] = { 2244 /* Device interface */ 2245 DEVMETHOD(device_probe, xe_probe), 2246 DEVMETHOD(device_attach, xe_attach), 2247 DEVMETHOD(device_detach, xe_detach), 2248 2249 { 0, 0 } 2250 }; 2251 2252 static driver_t xe_pccard_driver = { 2253 "xe", 2254 xe_pccard_methods, 2255 sizeof(struct xe_softc), 2256 }; 2257 2258 devclass_t xe_devclass; 2259 2260 DRIVER_MODULE(xe, pccard, xe_pccard_driver, xe_devclass, 0, 0); 2261