1 /* $NetBSD: mb86960.c,v 1.76 2010/01/19 22:06:24 pooka Exp $ */ 2 3 /* 4 * All Rights Reserved, Copyright (C) Fujitsu Limited 1995 5 * 6 * This software may be used, modified, copied, distributed, and sold, in 7 * both source and binary form provided that the above copyright, these 8 * terms and the following disclaimer are retained. The name of the author 9 * and/or the contributor may not be used to endorse or promote products 10 * derived from this software without specific prior written permission. 11 * 12 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND THE CONTRIBUTOR ``AS IS'' AND 13 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 14 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 15 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE CONTRIBUTOR BE LIABLE 16 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 17 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 18 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION. 19 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 20 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 21 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 22 * SUCH DAMAGE. 23 */ 24 25 /* 26 * Portions copyright (C) 1993, David Greenman. This software may be used, 27 * modified, copied, distributed, and sold, in both source and binary form 28 * provided that the above copyright and these terms are retained. Under no 29 * circumstances is the author responsible for the proper functioning of this 30 * software, nor does the author assume any responsibility for damages 31 * incurred with its use. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: mb86960.c,v 1.76 2010/01/19 22:06:24 pooka Exp $"); 36 37 /* 38 * Device driver for Fujitsu MB86960A/MB86965A based Ethernet cards. 39 * Contributed by M.S. <seki@sysrap.cs.fujitsu.co.jp> 40 * 41 * This version is intended to be a generic template for various 42 * MB86960A/MB86965A based Ethernet cards. It currently supports 43 * Fujitsu FMV-180 series (i.e., FMV-181 and FMV-182) and Allied- 44 * Telesis AT1700 series and RE2000 series. There are some 45 * unnecessary hooks embedded, which are primarily intended to support 46 * other types of Ethernet cards, but the author is not sure whether 47 * they are useful. 48 */ 49 50 #include "opt_inet.h" 51 #include "rnd.h" 52 53 #include <sys/param.h> 54 #include <sys/systm.h> 55 #include <sys/errno.h> 56 #include <sys/ioctl.h> 57 #include <sys/mbuf.h> 58 #include <sys/socket.h> 59 #include <sys/syslog.h> 60 #include <sys/device.h> 61 #if NRND > 0 62 #include <sys/rnd.h> 63 #endif 64 65 #include <net/if.h> 66 #include <net/if_dl.h> 67 #include <net/if_types.h> 68 #include <net/if_media.h> 69 #include <net/if_ether.h> 70 71 #ifdef INET 72 #include <netinet/in.h> 73 #include <netinet/in_systm.h> 74 #include <netinet/in_var.h> 75 #include <netinet/ip.h> 76 #include <netinet/if_inarp.h> 77 #endif 78 79 80 #include <net/bpf.h> 81 #include <net/bpfdesc.h> 82 83 #include <sys/bus.h> 84 85 #include <dev/ic/mb86960reg.h> 86 #include <dev/ic/mb86960var.h> 87 88 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 89 #define bus_space_write_stream_2 bus_space_write_2 90 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 91 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 92 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 93 94 /* Standard driver entry points. These can be static. */ 95 void mb86960_init(struct mb86960_softc *); 96 int mb86960_ioctl(struct ifnet *, u_long, void *); 97 void mb86960_start(struct ifnet *); 98 void mb86960_reset(struct mb86960_softc *); 99 void mb86960_watchdog(struct ifnet *); 100 101 /* Local functions. Order of declaration is confused. FIXME. */ 102 int mb86960_get_packet(struct mb86960_softc *, u_int); 103 void mb86960_stop(struct mb86960_softc *); 104 void mb86960_tint(struct mb86960_softc *, uint8_t); 105 void mb86960_rint(struct mb86960_softc *, uint8_t); 106 static inline 107 void mb86960_xmit(struct mb86960_softc *); 108 void mb86960_write_mbufs(struct mb86960_softc *, struct mbuf *); 109 static inline 110 void mb86960_droppacket(struct mb86960_softc *); 111 void mb86960_getmcaf(struct ethercom *, uint8_t *); 112 void mb86960_setmode(struct mb86960_softc *); 113 void mb86960_loadmar(struct mb86960_softc *); 114 115 int mb86960_mediachange(struct ifnet *); 116 void mb86960_mediastatus(struct ifnet *, struct ifmediareq *); 117 118 #if FE_DEBUG >= 1 119 void mb86960_dump(int, struct mb86960_softc *); 120 #endif 121 122 void 123 mb86960_attach(struct mb86960_softc *sc, uint8_t *myea) 124 { 125 bus_space_tag_t bst = sc->sc_bst; 126 bus_space_handle_t bsh = sc->sc_bsh; 127 128 /* Register values which depend on board design. */ 129 sc->proto_dlcr4 = FE_D4_LBC_DISABLE | FE_D4_CNTRL; 130 sc->proto_dlcr5 = 0; 131 sc->proto_dlcr7 = FE_D7_BYTSWP_LH; 132 if ((sc->sc_flags & FE_FLAGS_MB86960) != 0) 133 sc->proto_dlcr7 |= FE_D7_ED_TEST; /* XXX */ 134 sc->proto_bmpr13 = FE_B13_TPTYPE_UTP | FE_B13_PORT_AUTO; 135 136 /* 137 * Program the 86960 as following defaults: 138 * SRAM: 32KB, 100ns, byte-wide access. 139 * Transmission buffer: 4KB x 2. 140 * System bus interface: 16 bits. 141 * These values except TXBSIZE should be modified as per 142 * sc_flags which is set in MD attachments, because they 143 * are hard-wired on the board. Modifying TXBSIZE will affect 144 * the driver performance. 145 */ 146 sc->proto_dlcr6 = FE_D6_BUFSIZ_32KB | FE_D6_TXBSIZ_2x4KB | 147 FE_D6_BBW_BYTE | FE_D6_SRAM_100ns; 148 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) 149 sc->proto_dlcr6 |= FE_D6_SBW_BYTE; 150 if (sc->sc_flags & FE_FLAGS_SRAM_150ns) 151 sc->proto_dlcr6 &= ~FE_D6_SRAM_100ns; 152 153 /* 154 * Minimum initialization of the hardware. 155 * We write into registers; hope I/O ports have no 156 * overlap with other boards. 157 */ 158 159 /* Initialize 86960. */ 160 bus_space_write_1(bst, bsh, FE_DLCR6, 161 sc->proto_dlcr6 | FE_D6_DLC_DISABLE); 162 delay(200); 163 164 #ifdef DIAGNOSTIC 165 if (myea == NULL) { 166 aprint_error_dev(sc->sc_dev, 167 "ethernet address shouldn't be NULL\n"); 168 panic("NULL ethernet address"); 169 } 170 #endif 171 memcpy(sc->sc_enaddr, myea, sizeof(sc->sc_enaddr)); 172 173 /* Disable all interrupts. */ 174 bus_space_write_1(bst, bsh, FE_DLCR2, 0); 175 bus_space_write_1(bst, bsh, FE_DLCR3, 0); 176 } 177 178 /* 179 * Install interface into kernel networking data structures 180 */ 181 void 182 mb86960_config(struct mb86960_softc *sc, int *media, int nmedia, int defmedia) 183 { 184 cfdata_t cf = device_cfdata(sc->sc_dev); 185 struct ifnet *ifp = &sc->sc_ec.ec_if; 186 int i; 187 188 /* Stop the 86960. */ 189 mb86960_stop(sc); 190 191 /* Initialize ifnet structure. */ 192 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 193 ifp->if_softc = sc; 194 ifp->if_start = mb86960_start; 195 ifp->if_ioctl = mb86960_ioctl; 196 ifp->if_watchdog = mb86960_watchdog; 197 ifp->if_flags = 198 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 199 IFQ_SET_READY(&ifp->if_snd); 200 201 #if FE_DEBUG >= 3 202 log(LOG_INFO, "%s: mb86960_config()\n", device_xname(sc->sc_dev)); 203 mb86960_dump(LOG_INFO, sc); 204 #endif 205 206 #if FE_SINGLE_TRANSMISSION 207 /* Override txb config to allocate minimum. */ 208 sc->proto_dlcr6 &= ~FE_D6_TXBSIZ; 209 sc->proto_dlcr6 |= FE_D6_TXBSIZ_2x2KB; 210 #endif 211 212 /* Modify hardware config if it is requested. */ 213 if ((cf->cf_flags & FE_FLAGS_OVERRIDE_DLCR6) != 0) 214 sc->proto_dlcr6 = cf->cf_flags & FE_FLAGS_DLCR6_VALUE; 215 216 /* Find TX buffer size, based on the hardware dependent proto. */ 217 switch (sc->proto_dlcr6 & FE_D6_TXBSIZ) { 218 case FE_D6_TXBSIZ_2x2KB: 219 sc->txb_size = 2048; 220 break; 221 case FE_D6_TXBSIZ_2x4KB: 222 sc->txb_size = 4096; 223 break; 224 case FE_D6_TXBSIZ_2x8KB: 225 sc->txb_size = 8192; 226 break; 227 default: 228 /* Oops, we can't work with single buffer configuration. */ 229 #if FE_DEBUG >= 2 230 log(LOG_WARNING, "%s: strange TXBSIZ config; fixing\n", 231 device_xname(sc->sc_dev)); 232 #endif 233 sc->proto_dlcr6 &= ~FE_D6_TXBSIZ; 234 sc->proto_dlcr6 |= FE_D6_TXBSIZ_2x2KB; 235 sc->txb_size = 2048; 236 break; 237 } 238 239 /* Initialize media goo. */ 240 ifmedia_init(&sc->sc_media, 0, mb86960_mediachange, 241 mb86960_mediastatus); 242 if (media != NULL) { 243 for (i = 0; i < nmedia; i++) 244 ifmedia_add(&sc->sc_media, media[i], 0, NULL); 245 ifmedia_set(&sc->sc_media, defmedia); 246 } else { 247 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL); 248 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL); 249 } 250 251 /* Attach the interface. */ 252 if_attach(ifp); 253 ether_ifattach(ifp, sc->sc_enaddr); 254 255 #if NRND > 0 256 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 257 RND_TYPE_NET, 0); 258 #endif 259 /* Print additional info when attached. */ 260 aprint_normal_dev(sc->sc_dev, "Ethernet address %s\n", 261 ether_sprintf(sc->sc_enaddr)); 262 263 #if FE_DEBUG >= 3 264 { 265 int buf, txb, bbw, sbw, ram; 266 267 buf = txb = bbw = sbw = ram = -1; 268 switch (sc->proto_dlcr6 & FE_D6_BUFSIZ) { 269 case FE_D6_BUFSIZ_8KB: 270 buf = 8; 271 break; 272 case FE_D6_BUFSIZ_16KB: 273 buf = 16; 274 break; 275 case FE_D6_BUFSIZ_32KB: 276 buf = 32; 277 break; 278 case FE_D6_BUFSIZ_64KB: 279 buf = 64; 280 break; 281 } 282 switch (sc->proto_dlcr6 & FE_D6_TXBSIZ) { 283 case FE_D6_TXBSIZ_2x2KB: 284 txb = 2; 285 break; 286 case FE_D6_TXBSIZ_2x4KB: 287 txb = 4; 288 break; 289 case FE_D6_TXBSIZ_2x8KB: 290 txb = 8; 291 break; 292 } 293 switch (sc->proto_dlcr6 & FE_D6_BBW) { 294 case FE_D6_BBW_BYTE: 295 bbw = 8; 296 break; 297 case FE_D6_BBW_WORD: 298 bbw = 16; 299 break; 300 } 301 switch (sc->proto_dlcr6 & FE_D6_SBW) { 302 case FE_D6_SBW_BYTE: 303 sbw = 8; 304 break; 305 case FE_D6_SBW_WORD: 306 sbw = 16; 307 break; 308 } 309 switch (sc->proto_dlcr6 & FE_D6_SRAM) { 310 case FE_D6_SRAM_100ns: 311 ram = 100; 312 break; 313 case FE_D6_SRAM_150ns: 314 ram = 150; 315 break; 316 } 317 aprint_debug_dev(sc->sc_dev, 318 "SRAM %dKB %dbit %dns, TXB %dKBx2, %dbit I/O\n", 319 buf, bbw, ram, txb, sbw); 320 } 321 #endif 322 323 /* The attach is successful. */ 324 sc->sc_stat |= FE_STAT_ATTACHED; 325 } 326 327 /* 328 * Media change callback. 329 */ 330 int 331 mb86960_mediachange(struct ifnet *ifp) 332 { 333 struct mb86960_softc *sc = ifp->if_softc; 334 335 if (sc->sc_mediachange) 336 return (*sc->sc_mediachange)(sc); 337 return 0; 338 } 339 340 /* 341 * Media status callback. 342 */ 343 void 344 mb86960_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 345 { 346 struct mb86960_softc *sc = ifp->if_softc; 347 348 if ((sc->sc_stat & FE_STAT_ENABLED) == 0) { 349 ifmr->ifm_active = IFM_ETHER | IFM_NONE; 350 ifmr->ifm_status = 0; 351 return; 352 } 353 354 if (sc->sc_mediastatus) 355 (*sc->sc_mediastatus)(sc, ifmr); 356 } 357 358 /* 359 * Reset interface. 360 */ 361 void 362 mb86960_reset(struct mb86960_softc *sc) 363 { 364 int s; 365 366 s = splnet(); 367 mb86960_stop(sc); 368 mb86960_init(sc); 369 splx(s); 370 } 371 372 /* 373 * Stop everything on the interface. 374 * 375 * All buffered packets, both transmitting and receiving, 376 * if any, will be lost by stopping the interface. 377 */ 378 void 379 mb86960_stop(struct mb86960_softc *sc) 380 { 381 bus_space_tag_t bst = sc->sc_bst; 382 bus_space_handle_t bsh = sc->sc_bsh; 383 384 #if FE_DEBUG >= 3 385 log(LOG_INFO, "%s: top of mb86960_stop()\n", device_xname(sc->sc_dev)); 386 mb86960_dump(LOG_INFO, sc); 387 #endif 388 389 /* Disable interrupts. */ 390 bus_space_write_1(bst, bsh, FE_DLCR2, 0x00); 391 bus_space_write_1(bst, bsh, FE_DLCR3, 0x00); 392 393 /* Stop interface hardware. */ 394 delay(200); 395 bus_space_write_1(bst, bsh, FE_DLCR6, 396 sc->proto_dlcr6 | FE_D6_DLC_DISABLE); 397 delay(200); 398 399 /* Clear all interrupt status. */ 400 bus_space_write_1(bst, bsh, FE_DLCR0, 0xFF); 401 bus_space_write_1(bst, bsh, FE_DLCR1, 0xFF); 402 403 /* Put the chip in stand-by mode. */ 404 delay(200); 405 bus_space_write_1(bst, bsh, FE_DLCR7, 406 sc->proto_dlcr7 | FE_D7_POWER_DOWN); 407 delay(200); 408 409 /* MAR loading can be delayed. */ 410 sc->filter_change = 0; 411 412 /* Call a hook. */ 413 if (sc->stop_card) 414 (*sc->stop_card)(sc); 415 416 #if FE_DEBUG >= 3 417 log(LOG_INFO, "%s: end of mb86960_stop()\n", device_xname(sc->sc_dev)); 418 mb86960_dump(LOG_INFO, sc); 419 #endif 420 } 421 422 /* 423 * Device timeout/watchdog routine. Entered if the device neglects to 424 * generate an interrupt after a transmit has been started on it. 425 */ 426 void 427 mb86960_watchdog(struct ifnet *ifp) 428 { 429 struct mb86960_softc *sc = ifp->if_softc; 430 431 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 432 #if FE_DEBUG >= 3 433 mb86960_dump(LOG_INFO, sc); 434 #endif 435 436 /* Record how many packets are lost by this accident. */ 437 sc->sc_ec.ec_if.if_oerrors += sc->txb_sched + sc->txb_count; 438 439 mb86960_reset(sc); 440 } 441 442 /* 443 * Drop (skip) a packet from receive buffer in 86960 memory. 444 */ 445 static inline void 446 mb86960_droppacket(struct mb86960_softc *sc) 447 { 448 bus_space_tag_t bst = sc->sc_bst; 449 bus_space_handle_t bsh = sc->sc_bsh; 450 451 bus_space_write_1(bst, bsh, FE_BMPR14, FE_B14_FILTER | FE_B14_SKIP); 452 } 453 454 /* 455 * Initialize device. 456 */ 457 void 458 mb86960_init(struct mb86960_softc *sc) 459 { 460 bus_space_tag_t bst = sc->sc_bst; 461 bus_space_handle_t bsh = sc->sc_bsh; 462 struct ifnet *ifp = &sc->sc_ec.ec_if; 463 int i; 464 465 #if FE_DEBUG >= 3 466 log(LOG_INFO, "%s: top of mb86960_init()\n", device_xname(sc->sc_dev)); 467 mb86960_dump(LOG_INFO, sc); 468 #endif 469 470 /* Reset transmitter flags. */ 471 ifp->if_flags &= ~IFF_OACTIVE; 472 ifp->if_timer = 0; 473 474 sc->txb_free = sc->txb_size; 475 sc->txb_count = 0; 476 sc->txb_sched = 0; 477 478 /* Do any card-specific initialization, if applicable. */ 479 if (sc->init_card) 480 (*sc->init_card)(sc); 481 482 #if FE_DEBUG >= 3 483 log(LOG_INFO, "%s: after init hook\n", device_xname(sc->sc_dev)); 484 mb86960_dump(LOG_INFO, sc); 485 #endif 486 487 /* 488 * Make sure to disable the chip, also. 489 * This may also help re-programming the chip after 490 * hot insertion of PCMCIAs. 491 */ 492 bus_space_write_1(bst, bsh, FE_DLCR6, 493 sc->proto_dlcr6 | FE_D6_DLC_DISABLE); 494 delay(200); 495 496 /* Power up the chip and select register bank for DLCRs. */ 497 bus_space_write_1(bst, bsh, FE_DLCR7, 498 sc->proto_dlcr7 | FE_D7_RBS_DLCR | FE_D7_POWER_UP); 499 delay(200); 500 501 /* Feed the station address. */ 502 bus_space_write_region_1(bst, bsh, FE_DLCR8, 503 sc->sc_enaddr, ETHER_ADDR_LEN); 504 505 /* Select the BMPR bank for runtime register access. */ 506 bus_space_write_1(bst, bsh, FE_DLCR7, 507 sc->proto_dlcr7 | FE_D7_RBS_BMPR | FE_D7_POWER_UP); 508 509 /* Initialize registers. */ 510 bus_space_write_1(bst, bsh, FE_DLCR0, 0xFF); /* Clear all bits. */ 511 bus_space_write_1(bst, bsh, FE_DLCR1, 0xFF); /* ditto. */ 512 bus_space_write_1(bst, bsh, FE_DLCR2, 0x00); 513 bus_space_write_1(bst, bsh, FE_DLCR3, 0x00); 514 bus_space_write_1(bst, bsh, FE_DLCR4, sc->proto_dlcr4); 515 bus_space_write_1(bst, bsh, FE_DLCR5, sc->proto_dlcr5); 516 bus_space_write_1(bst, bsh, FE_BMPR10, 0x00); 517 bus_space_write_1(bst, bsh, FE_BMPR11, FE_B11_CTRL_SKIP); 518 bus_space_write_1(bst, bsh, FE_BMPR12, 0x00); 519 bus_space_write_1(bst, bsh, FE_BMPR13, sc->proto_bmpr13); 520 bus_space_write_1(bst, bsh, FE_BMPR14, FE_B14_FILTER); 521 bus_space_write_1(bst, bsh, FE_BMPR15, 0x00); 522 523 #if FE_DEBUG >= 3 524 log(LOG_INFO, "%s: just before enabling DLC\n", 525 device_xname(sc->sc_dev)); 526 mb86960_dump(LOG_INFO, sc); 527 #endif 528 529 /* Enable interrupts. */ 530 bus_space_write_1(bst, bsh, FE_DLCR2, FE_TMASK); 531 bus_space_write_1(bst, bsh, FE_DLCR3, FE_RMASK); 532 533 /* Enable transmitter and receiver. */ 534 delay(200); 535 bus_space_write_1(bst, bsh, FE_DLCR6, 536 sc->proto_dlcr6 | FE_D6_DLC_ENABLE); 537 delay(200); 538 539 #if FE_DEBUG >= 3 540 log(LOG_INFO, "%s: just after enabling DLC\n", 541 device_xname(sc->sc_dev)); 542 mb86960_dump(LOG_INFO, sc); 543 #endif 544 545 /* 546 * Make sure to empty the receive buffer. 547 * 548 * This may be redundant, but *if* the receive buffer were full 549 * at this point, the driver would hang. I have experienced 550 * some strange hangups just after UP. I hope the following 551 * code solve the problem. 552 * 553 * I have changed the order of hardware initialization. 554 * I think the receive buffer cannot have any packets at this 555 * point in this version. The following code *must* be 556 * redundant now. FIXME. 557 */ 558 for (i = 0; i < FE_MAX_RECV_COUNT; i++) { 559 if (bus_space_read_1(bst, bsh, FE_DLCR5) & FE_D5_BUFEMP) 560 break; 561 mb86960_droppacket(sc); 562 } 563 #if FE_DEBUG >= 1 564 if (i >= FE_MAX_RECV_COUNT) 565 log(LOG_ERR, "%s: cannot empty receive buffer\n", 566 device_xname(sc->sc_dev)); 567 #endif 568 #if FE_DEBUG >= 3 569 if (i < FE_MAX_RECV_COUNT) 570 log(LOG_INFO, "%s: receive buffer emptied (%d)\n", 571 device_xname(sc->sc_dev), i); 572 #endif 573 574 #if FE_DEBUG >= 3 575 log(LOG_INFO, "%s: after ERB loop\n", device_xname(sc->sc_dev)); 576 mb86960_dump(LOG_INFO, sc); 577 #endif 578 579 /* Do we need this here? */ 580 bus_space_write_1(bst, bsh, FE_DLCR0, 0xFF); /* Clear all bits. */ 581 bus_space_write_1(bst, bsh, FE_DLCR1, 0xFF); /* ditto. */ 582 583 #if FE_DEBUG >= 3 584 log(LOG_INFO, "%s: after FIXME\n", device_xname(sc->sc_dev)); 585 mb86960_dump(LOG_INFO, sc); 586 #endif 587 588 /* Set 'running' flag. */ 589 ifp->if_flags |= IFF_RUNNING; 590 591 /* 592 * At this point, the interface is runnung properly, 593 * except that it receives *no* packets. we then call 594 * mb86960_setmode() to tell the chip what packets to be 595 * received, based on the if_flags and multicast group 596 * list. It completes the initialization process. 597 */ 598 mb86960_setmode(sc); 599 600 #if FE_DEBUG >= 3 601 log(LOG_INFO, "%s: after setmode\n", device_xname(sc->sc_dev)); 602 mb86960_dump(LOG_INFO, sc); 603 #endif 604 605 /* ...and attempt to start output. */ 606 mb86960_start(ifp); 607 608 #if FE_DEBUG >= 3 609 log(LOG_INFO, "%s: end of mb86960_init()\n", device_xname(sc->sc_dev)); 610 mb86960_dump(LOG_INFO, sc); 611 #endif 612 } 613 614 /* 615 * This routine actually starts the transmission on the interface 616 */ 617 static inline void 618 mb86960_xmit(struct mb86960_softc *sc) 619 { 620 bus_space_tag_t bst = sc->sc_bst; 621 bus_space_handle_t bsh = sc->sc_bsh; 622 623 /* 624 * Set a timer just in case we never hear from the board again. 625 * We use longer timeout for multiple packet transmission. 626 * I'm not sure this timer value is appropriate. FIXME. 627 */ 628 sc->sc_ec.ec_if.if_timer = 1 + sc->txb_count; 629 630 /* Update txb variables. */ 631 sc->txb_sched = sc->txb_count; 632 sc->txb_count = 0; 633 sc->txb_free = sc->txb_size; 634 635 #if FE_DELAYED_PADDING 636 /* Omit the postponed padding process. */ 637 sc->txb_padding = 0; 638 #endif 639 640 /* Start transmitter, passing packets in TX buffer. */ 641 bus_space_write_1(bst, bsh, FE_BMPR10, sc->txb_sched | FE_B10_START); 642 } 643 644 /* 645 * Start output on interface. 646 * We make two assumptions here: 647 * 1) that the current priority is set to splnet _before_ this code 648 * is called *and* is returned to the appropriate priority after 649 * return 650 * 2) that the IFF_OACTIVE flag is checked before this code is called 651 * (i.e. that the output part of the interface is idle) 652 */ 653 void 654 mb86960_start(struct ifnet *ifp) 655 { 656 struct mb86960_softc *sc = ifp->if_softc; 657 struct mbuf *m; 658 659 #if FE_DEBUG >= 1 660 /* Just a sanity check. */ 661 if ((sc->txb_count == 0) != (sc->txb_free == sc->txb_size)) { 662 /* 663 * Txb_count and txb_free co-works to manage the 664 * transmission buffer. Txb_count keeps track of the 665 * used potion of the buffer, while txb_free does unused 666 * potion. So, as long as the driver runs properly, 667 * txb_count is zero if and only if txb_free is same 668 * as txb_size (which represents whole buffer.) 669 */ 670 log(LOG_ERR, "%s: inconsistent txb variables (%d, %d)\n", 671 device_xname(sc->sc_dev), sc->txb_count, sc->txb_free); 672 /* 673 * So, what should I do, then? 674 * 675 * We now know txb_count and txb_free contradicts. We 676 * cannot, however, tell which is wrong. More 677 * over, we cannot peek 86960 transmission buffer or 678 * reset the transmission buffer. (In fact, we can 679 * reset the entire interface. I don't want to do it.) 680 * 681 * If txb_count is incorrect, leaving it as is will cause 682 * sending of gabages after next interrupt. We have to 683 * avoid it. Hence, we reset the txb_count here. If 684 * txb_free was incorrect, resetting txb_count just loose 685 * some packets. We can live with it. 686 */ 687 sc->txb_count = 0; 688 } 689 #endif 690 691 #if FE_DEBUG >= 1 692 /* 693 * First, see if there are buffered packets and an idle 694 * transmitter - should never happen at this point. 695 */ 696 if ((sc->txb_count > 0) && (sc->txb_sched == 0)) { 697 log(LOG_ERR, "%s: transmitter idle with %d buffered packets\n", 698 device_xname(sc->sc_dev), sc->txb_count); 699 mb86960_xmit(sc); 700 } 701 #endif 702 703 /* 704 * Stop accepting more transmission packets temporarily, when 705 * a filter change request is delayed. Updating the MARs on 706 * 86960 flushes the transmisstion buffer, so it is delayed 707 * until all buffered transmission packets have been sent 708 * out. 709 */ 710 if (sc->filter_change) { 711 /* 712 * Filter change request is delayed only when the DLC is 713 * working. DLC soon raise an interrupt after finishing 714 * the work. 715 */ 716 goto indicate_active; 717 } 718 719 for (;;) { 720 /* 721 * See if there is room to put another packet in the buffer. 722 * We *could* do better job by peeking the send queue to 723 * know the length of the next packet. Current version just 724 * tests against the worst case (i.e., longest packet). FIXME. 725 * 726 * When adding the packet-peek feature, don't forget adding a 727 * test on txb_count against QUEUEING_MAX. 728 * There is a little chance the packet count exceeds 729 * the limit. Assume transmission buffer is 8KB (2x8KB 730 * configuration) and an application sends a bunch of small 731 * (i.e., minimum packet sized) packets rapidly. An 8KB 732 * buffer can hold 130 blocks of 62 bytes long... 733 */ 734 if (sc->txb_free < 735 (ETHER_MAX_LEN - ETHER_CRC_LEN) + FE_TXLEN_SIZE) { 736 /* No room. */ 737 goto indicate_active; 738 } 739 740 #if FE_SINGLE_TRANSMISSION 741 if (sc->txb_count > 0) { 742 /* Just one packet per a transmission buffer. */ 743 goto indicate_active; 744 } 745 #endif 746 747 /* 748 * Get the next mbuf chain for a packet to send. 749 */ 750 IFQ_DEQUEUE(&ifp->if_snd, m); 751 if (m == 0) { 752 /* No more packets to send. */ 753 goto indicate_inactive; 754 } 755 756 /* Tap off here if there is a BPF listener. */ 757 if (ifp->if_bpf) 758 bpf_ops->bpf_mtap(ifp->if_bpf, m); 759 760 /* 761 * Copy the mbuf chain into the transmission buffer. 762 * txb_* variables are updated as necessary. 763 */ 764 mb86960_write_mbufs(sc, m); 765 766 m_freem(m); 767 768 /* Start transmitter if it's idle. */ 769 if (sc->txb_sched == 0) 770 mb86960_xmit(sc); 771 } 772 773 indicate_inactive: 774 /* 775 * We are using the !OACTIVE flag to indicate to 776 * the outside world that we can accept an 777 * additional packet rather than that the 778 * transmitter is _actually_ active. Indeed, the 779 * transmitter may be active, but if we haven't 780 * filled all the buffers with data then we still 781 * want to accept more. 782 */ 783 ifp->if_flags &= ~IFF_OACTIVE; 784 return; 785 786 indicate_active: 787 /* 788 * The transmitter is active, and there are no room for 789 * more outgoing packets in the transmission buffer. 790 */ 791 ifp->if_flags |= IFF_OACTIVE; 792 return; 793 } 794 795 /* 796 * Transmission interrupt handler 797 * The control flow of this function looks silly. FIXME. 798 */ 799 void 800 mb86960_tint(struct mb86960_softc *sc, uint8_t tstat) 801 { 802 bus_space_tag_t bst = sc->sc_bst; 803 bus_space_handle_t bsh = sc->sc_bsh; 804 struct ifnet *ifp = &sc->sc_ec.ec_if; 805 int left; 806 int col; 807 808 /* 809 * Handle "excessive collision" interrupt. 810 */ 811 if (tstat & FE_D0_COLL16) { 812 /* 813 * Find how many packets (including this collided one) 814 * are left unsent in transmission buffer. 815 */ 816 left = bus_space_read_1(bst, bsh, FE_BMPR10); 817 818 #if FE_DEBUG >= 2 819 log(LOG_WARNING, "%s: excessive collision (%d/%d)\n", 820 device_xname(sc->sc_dev), left, sc->txb_sched); 821 #endif 822 #if FE_DEBUG >= 3 823 mb86960_dump(LOG_INFO, sc); 824 #endif 825 826 /* 827 * Update statistics. 828 */ 829 ifp->if_collisions += 16; 830 ifp->if_oerrors++; 831 ifp->if_opackets += sc->txb_sched - left; 832 833 /* 834 * Collision statistics has been updated. 835 * Clear the collision flag on 86960 now to avoid confusion. 836 */ 837 bus_space_write_1(bst, bsh, FE_DLCR0, FE_D0_COLLID); 838 839 /* 840 * Restart transmitter, skipping the 841 * collided packet. 842 * 843 * We *must* skip the packet to keep network running 844 * properly. Excessive collision error is an 845 * indication of the network overload. If we 846 * tried sending the same packet after excessive 847 * collision, the network would be filled with 848 * out-of-time packets. Packets belonging 849 * to reliable transport (such as TCP) are resent 850 * by some upper layer. 851 */ 852 bus_space_write_1(bst, bsh, FE_BMPR11, 853 FE_B11_CTRL_SKIP | FE_B11_MODE1); 854 sc->txb_sched = left - 1; 855 } 856 857 /* 858 * Handle "transmission complete" interrupt. 859 */ 860 if (tstat & FE_D0_TXDONE) { 861 /* 862 * Add in total number of collisions on last 863 * transmission. We also clear "collision occurred" flag 864 * here. 865 * 866 * 86960 has a design flow on collision count on multiple 867 * packet transmission. When we send two or more packets 868 * with one start command (that's what we do when the 869 * transmission queue is clauded), 86960 informs us number 870 * of collisions occurred on the last packet on the 871 * transmission only. Number of collisions on previous 872 * packets are lost. I have told that the fact is clearly 873 * stated in the Fujitsu document. 874 * 875 * I considered not to mind it seriously. Collision 876 * count is not so important, anyway. Any comments? FIXME. 877 */ 878 879 if (bus_space_read_1(bst, bsh, FE_DLCR0) & FE_D0_COLLID) { 880 /* Clear collision flag. */ 881 bus_space_write_1(bst, bsh, FE_DLCR0, FE_D0_COLLID); 882 883 /* Extract collision count from 86960. */ 884 col = bus_space_read_1(bst, bsh, FE_DLCR4) & FE_D4_COL; 885 if (col == 0) { 886 /* 887 * Status register indicates collisions, 888 * while the collision count is zero. 889 * This can happen after multiple packet 890 * transmission, indicating that one or more 891 * previous packet(s) had been collided. 892 * 893 * Since the accurate number of collisions 894 * has been lost, we just guess it as 1; 895 * Am I too optimistic? FIXME. 896 */ 897 col = 1; 898 } else 899 col >>= FE_D4_COL_SHIFT; 900 ifp->if_collisions += col; 901 #if FE_DEBUG >= 4 902 log(LOG_WARNING, "%s: %d collision%s (%d)\n", 903 device_xname(sc->sc_dev), col, col == 1 ? "" : "s", 904 sc->txb_sched); 905 #endif 906 } 907 908 /* 909 * Update total number of successfully 910 * transmitted packets. 911 */ 912 ifp->if_opackets += sc->txb_sched; 913 sc->txb_sched = 0; 914 } 915 916 if (sc->txb_sched == 0) { 917 /* 918 * The transmitter is no more active. 919 * Reset output active flag and watchdog timer. 920 */ 921 ifp->if_flags &= ~IFF_OACTIVE; 922 ifp->if_timer = 0; 923 924 /* 925 * If more data is ready to transmit in the buffer, start 926 * transmitting them. Otherwise keep transmitter idle, 927 * even if more data is queued. This gives receive 928 * process a slight priority. 929 */ 930 if (sc->txb_count > 0) 931 mb86960_xmit(sc); 932 } 933 } 934 935 /* 936 * Ethernet interface receiver interrupt. 937 */ 938 void 939 mb86960_rint(struct mb86960_softc *sc, uint8_t rstat) 940 { 941 bus_space_tag_t bst = sc->sc_bst; 942 bus_space_handle_t bsh = sc->sc_bsh; 943 struct ifnet *ifp = &sc->sc_ec.ec_if; 944 u_int status, len; 945 int i; 946 947 /* 948 * Update statistics if this interrupt is caused by an error. 949 */ 950 if (rstat & (FE_D1_OVRFLO | FE_D1_CRCERR | FE_D1_ALGERR | 951 FE_D1_SRTPKT)) { 952 #if FE_DEBUG >= 3 953 char sbuf[sizeof(FE_D1_ERRBITS) + 64]; 954 955 snprintb(sbuf, sizeof(sbuf), FE_D1_ERRBITS, rstat); 956 log(LOG_WARNING, "%s: receive error: %s\n", 957 device_xname(sc->sc_dev), sbuf); 958 #endif 959 ifp->if_ierrors++; 960 } 961 962 /* 963 * MB86960 has a flag indicating "receive queue empty." 964 * We just loop checking the flag to pull out all received 965 * packets. 966 * 967 * We limit the number of iterrations to avoid infinite loop. 968 * It can be caused by a very slow CPU (some broken 969 * peripheral may insert incredible number of wait cycles) 970 * or, worse, by a broken MB86960 chip. 971 */ 972 for (i = 0; i < FE_MAX_RECV_COUNT; i++) { 973 /* Stop the iterration if 86960 indicates no packets. */ 974 if (bus_space_read_1(bst, bsh, FE_DLCR5) & FE_D5_BUFEMP) 975 break; 976 977 /* 978 * Extract receive packet status from the receive 979 * packet header. 980 */ 981 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 982 status = bus_space_read_1(bst, bsh, FE_BMPR8); 983 (void)bus_space_read_1(bst, bsh, FE_BMPR8); 984 } else 985 status = bus_space_read_2(bst, bsh, FE_BMPR8); 986 987 #if FE_DEBUG >= 4 988 log(LOG_INFO, "%s: receive status = %02x\n", 989 device_xname(sc->sc_dev), status); 990 #endif 991 992 /* 993 * If there was an error, update statistics and drop 994 * the packet, unless the interface is in promiscuous 995 * mode. 996 */ 997 if ((status & FE_RXSTAT_GOODPKT) == 0) { 998 if ((ifp->if_flags & IFF_PROMISC) == 0) { 999 ifp->if_ierrors++; 1000 mb86960_droppacket(sc); 1001 continue; 1002 } 1003 } 1004 1005 /* 1006 * Extract the packet length from the receive packet header. 1007 * It is a sum of a header (14 bytes) and a payload. 1008 * CRC has been stripped off by the 86960. 1009 */ 1010 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 1011 len = bus_space_read_1(bst, bsh, FE_BMPR8); 1012 len |= bus_space_read_1(bst, bsh, FE_BMPR8) << 8; 1013 } else 1014 len = bus_space_read_2(bst, bsh, FE_BMPR8); 1015 1016 /* 1017 * MB86965 checks the packet length and drop big packet 1018 * before passing it to us. There are no chance we can 1019 * get [crufty] packets. Hence, if the length exceeds 1020 * the specified limit, it means some serious failure, 1021 * such as out-of-sync on receive buffer management. 1022 * 1023 * Is this statement true? FIXME. 1024 */ 1025 if (len > (ETHER_MAX_LEN - ETHER_CRC_LEN) || 1026 len < ETHER_HDR_LEN) { 1027 #if FE_DEBUG >= 2 1028 log(LOG_WARNING, 1029 "%s: received a %s packet? (%u bytes)\n", 1030 device_xname(sc->sc_dev), 1031 len < ETHER_HDR_LEN ? "partial" : "big", len); 1032 #endif 1033 ifp->if_ierrors++; 1034 mb86960_droppacket(sc); 1035 continue; 1036 } 1037 1038 /* 1039 * Check for a short (RUNT) packet. We *do* check 1040 * but do nothing other than print a message. 1041 * Short packets are illegal, but does nothing bad 1042 * if it carries data for upper layer. 1043 */ 1044 #if FE_DEBUG >= 2 1045 if (len < (ETHER_MIN_LEN - ETHER_CRC_LEN)) { 1046 log(LOG_WARNING, 1047 "%s: received a short packet? (%u bytes)\n", 1048 device_xname(sc->sc_dev), len); 1049 } 1050 #endif 1051 1052 /* 1053 * Go get a packet. 1054 */ 1055 if (mb86960_get_packet(sc, len) == 0) { 1056 /* Skip a packet, updating statistics. */ 1057 #if FE_DEBUG >= 2 1058 log(LOG_WARNING, 1059 "%s: out of mbufs; dropping packet (%u bytes)\n", 1060 device_xname(sc->sc_dev), len); 1061 #endif 1062 ifp->if_ierrors++; 1063 mb86960_droppacket(sc); 1064 1065 /* 1066 * We stop receiving packets, even if there are 1067 * more in the buffer. We hope we can get more 1068 * mbufs next time. 1069 */ 1070 return; 1071 } 1072 1073 /* Successfully received a packet. Update stat. */ 1074 ifp->if_ipackets++; 1075 } 1076 } 1077 1078 /* 1079 * Ethernet interface interrupt processor 1080 */ 1081 int 1082 mb86960_intr(void *arg) 1083 { 1084 struct mb86960_softc *sc = arg; 1085 bus_space_tag_t bst = sc->sc_bst; 1086 bus_space_handle_t bsh = sc->sc_bsh; 1087 struct ifnet *ifp = &sc->sc_ec.ec_if; 1088 uint8_t tstat, rstat; 1089 1090 if ((sc->sc_stat & FE_STAT_ENABLED) == 0 || 1091 !device_is_active(sc->sc_dev)) 1092 return 0; 1093 1094 #if FE_DEBUG >= 4 1095 log(LOG_INFO, "%s: mb86960_intr()\n", device_xname(sc->sc_dev)); 1096 mb86960_dump(LOG_INFO, sc); 1097 #endif 1098 1099 /* 1100 * Get interrupt conditions, masking unneeded flags. 1101 */ 1102 tstat = bus_space_read_1(bst, bsh, FE_DLCR0) & FE_TMASK; 1103 rstat = bus_space_read_1(bst, bsh, FE_DLCR1) & FE_RMASK; 1104 if (tstat == 0 && rstat == 0) 1105 return 0; 1106 1107 /* 1108 * Loop until there are no more new interrupt conditions. 1109 */ 1110 for (;;) { 1111 /* 1112 * Reset the conditions we are acknowledging. 1113 */ 1114 bus_space_write_1(bst, bsh, FE_DLCR0, tstat); 1115 bus_space_write_1(bst, bsh, FE_DLCR1, rstat); 1116 1117 /* 1118 * Handle transmitter interrupts. Handle these first because 1119 * the receiver will reset the board under some conditions. 1120 */ 1121 if (tstat != 0) 1122 mb86960_tint(sc, tstat); 1123 1124 /* 1125 * Handle receiver interrupts. 1126 */ 1127 if (rstat != 0) 1128 mb86960_rint(sc, rstat); 1129 1130 /* 1131 * Update the multicast address filter if it is 1132 * needed and possible. We do it now, because 1133 * we can make sure the transmission buffer is empty, 1134 * and there is a good chance that the receive queue 1135 * is empty. It will minimize the possibility of 1136 * packet lossage. 1137 */ 1138 if (sc->filter_change && 1139 sc->txb_count == 0 && sc->txb_sched == 0) { 1140 mb86960_loadmar(sc); 1141 ifp->if_flags &= ~IFF_OACTIVE; 1142 } 1143 1144 /* 1145 * If it looks like the transmitter can take more data, 1146 * attempt to start output on the interface. This is done 1147 * after handling the receiver interrupt to give the 1148 * receive operation priority. 1149 */ 1150 if ((ifp->if_flags & IFF_OACTIVE) == 0) 1151 mb86960_start(ifp); 1152 1153 #if NRND > 0 1154 if (rstat != 0 || tstat != 0) 1155 rnd_add_uint32(&sc->rnd_source, rstat + tstat); 1156 #endif 1157 1158 /* 1159 * Get interrupt conditions, masking unneeded flags. 1160 */ 1161 tstat = bus_space_read_1(bst, bsh, FE_DLCR0) & FE_TMASK; 1162 rstat = bus_space_read_1(bst, bsh, FE_DLCR1) & FE_RMASK; 1163 if (tstat == 0 && rstat == 0) 1164 return 1; 1165 } 1166 } 1167 1168 /* 1169 * Process an ioctl request. This code needs some work - it looks pretty ugly. 1170 */ 1171 int 1172 mb86960_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1173 { 1174 struct mb86960_softc *sc = ifp->if_softc; 1175 struct ifaddr *ifa = (struct ifaddr *)data; 1176 struct ifreq *ifr = (struct ifreq *)data; 1177 int s, error = 0; 1178 1179 #if FE_DEBUG >= 3 1180 log(LOG_INFO, "%s: ioctl(%lx)\n", device_xname(sc->sc_dev), cmd); 1181 #endif 1182 1183 s = splnet(); 1184 1185 switch (cmd) { 1186 case SIOCINITIFADDR: 1187 if ((error = mb86960_enable(sc)) != 0) 1188 break; 1189 ifp->if_flags |= IFF_UP; 1190 1191 mb86960_init(sc); 1192 switch (ifa->ifa_addr->sa_family) { 1193 #ifdef INET 1194 case AF_INET: 1195 arp_ifinit(ifp, ifa); 1196 break; 1197 #endif 1198 default: 1199 break; 1200 } 1201 break; 1202 1203 case SIOCSIFFLAGS: 1204 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1205 break; 1206 /* XXX re-use ether_ioctl() */ 1207 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1208 case IFF_RUNNING: 1209 /* 1210 * If interface is marked down and it is running, then 1211 * stop it. 1212 */ 1213 mb86960_stop(sc); 1214 ifp->if_flags &= ~IFF_RUNNING; 1215 mb86960_disable(sc); 1216 break; 1217 case IFF_UP: 1218 /* 1219 * If interface is marked up and it is stopped, then 1220 * start it. 1221 */ 1222 if ((error = mb86960_enable(sc)) != 0) 1223 break; 1224 mb86960_init(sc); 1225 break; 1226 case IFF_UP|IFF_RUNNING: 1227 /* 1228 * Reset the interface to pick up changes in any other 1229 * flags that affect hardware registers. 1230 */ 1231 mb86960_setmode(sc); 1232 break; 1233 case 0: 1234 break; 1235 } 1236 #if FE_DEBUG >= 1 1237 /* "ifconfig fe0 debug" to print register dump. */ 1238 if (ifp->if_flags & IFF_DEBUG) { 1239 log(LOG_INFO, "%s: SIOCSIFFLAGS(DEBUG)\n", 1240 device_xname(sc->sc_dev)); 1241 mb86960_dump(LOG_DEBUG, sc); 1242 } 1243 #endif 1244 break; 1245 1246 case SIOCADDMULTI: 1247 case SIOCDELMULTI: 1248 if ((sc->sc_stat & FE_STAT_ENABLED) == 0) { 1249 error = EIO; 1250 break; 1251 } 1252 1253 /* Update our multicast list. */ 1254 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1255 /* 1256 * Multicast list has changed; set the hardware filter 1257 * accordingly. 1258 */ 1259 if (ifp->if_flags & IFF_RUNNING) 1260 mb86960_setmode(sc); 1261 error = 0; 1262 } 1263 break; 1264 1265 case SIOCGIFMEDIA: 1266 case SIOCSIFMEDIA: 1267 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 1268 break; 1269 1270 default: 1271 error = ether_ioctl(ifp, cmd, data); 1272 break; 1273 } 1274 1275 splx(s); 1276 return error; 1277 } 1278 1279 /* 1280 * Retrieve packet from receive buffer and send to the next level up via 1281 * ether_input(). If there is a BPF listener, give a copy to BPF, too. 1282 * Returns 0 if success, -1 if error (i.e., mbuf allocation failure). 1283 */ 1284 int 1285 mb86960_get_packet(struct mb86960_softc *sc, u_int len) 1286 { 1287 bus_space_tag_t bst = sc->sc_bst; 1288 bus_space_handle_t bsh = sc->sc_bsh; 1289 struct ifnet *ifp = &sc->sc_ec.ec_if; 1290 struct mbuf *m; 1291 1292 /* Allocate a header mbuf. */ 1293 MGETHDR(m, M_DONTWAIT, MT_DATA); 1294 if (m == 0) 1295 return 0; 1296 m->m_pkthdr.rcvif = ifp; 1297 m->m_pkthdr.len = len; 1298 1299 /* The following silliness is to make NFS happy. */ 1300 #define EROUND ((sizeof(struct ether_header) + 3) & ~3) 1301 #define EOFF (EROUND - sizeof(struct ether_header)) 1302 1303 /* 1304 * Our strategy has one more problem. There is a policy on 1305 * mbuf cluster allocation. It says that we must have at 1306 * least MINCLSIZE (208 bytes) to allocate a cluster. For a 1307 * packet of a size between (MHLEN - 2) to (MINCLSIZE - 2), 1308 * our code violates the rule... 1309 * On the other hand, the current code is short, simple, 1310 * and fast, however. It does no harmful thing, just waists 1311 * some memory. Any comments? FIXME. 1312 */ 1313 1314 /* Attach a cluster if this packet doesn't fit in a normal mbuf. */ 1315 if (len > MHLEN - EOFF) { 1316 MCLGET(m, M_DONTWAIT); 1317 if ((m->m_flags & M_EXT) == 0) { 1318 m_freem(m); 1319 return 0; 1320 } 1321 } 1322 1323 /* 1324 * The following assumes there is room for the ether header in the 1325 * header mbuf. 1326 */ 1327 m->m_data += EOFF; 1328 1329 /* Set the length of this packet. */ 1330 m->m_len = len; 1331 1332 /* Get a packet. */ 1333 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) 1334 bus_space_read_multi_1(bst, bsh, FE_BMPR8, 1335 mtod(m, uint8_t *), len); 1336 else 1337 bus_space_read_multi_stream_2(bst, bsh, FE_BMPR8, 1338 mtod(m, uint16_t *), (len + 1) >> 1); 1339 1340 /* 1341 * Check if there's a BPF listener on this interface. If so, hand off 1342 * the raw packet to bpf. 1343 */ 1344 if (ifp->if_bpf) 1345 bpf_ops->bpf_mtap(ifp->if_bpf, m); 1346 1347 (*ifp->if_input)(ifp, m); 1348 return 1; 1349 } 1350 1351 /* 1352 * Write an mbuf chain to the transmission buffer memory using 16 bit PIO. 1353 * Returns number of bytes actually written, including length word. 1354 * 1355 * If an mbuf chain is too long for an Ethernet frame, it is not sent. 1356 * Packets shorter than Ethernet minimum are legal, and we pad them 1357 * before sending out. An exception is "partial" packets which are 1358 * shorter than mandatory Ethernet header. 1359 * 1360 * I wrote a code for an experimental "delayed padding" technique. 1361 * When employed, it postpones the padding process for short packets. 1362 * If xmit() occurred at the moment, the padding process is omitted, and 1363 * garbages are sent as pad data. If next packet is stored in the 1364 * transmission buffer before xmit(), write_mbuf() pads the previous 1365 * packet before transmitting new packet. This *may* gain the 1366 * system performance (slightly). 1367 */ 1368 void 1369 mb86960_write_mbufs(struct mb86960_softc *sc, struct mbuf *m) 1370 { 1371 bus_space_tag_t bst = sc->sc_bst; 1372 bus_space_handle_t bsh = sc->sc_bsh; 1373 int totlen, len; 1374 #if FE_DEBUG >= 2 1375 struct mbuf *mp; 1376 #endif 1377 1378 #if FE_DELAYED_PADDING 1379 /* Do the "delayed padding." */ 1380 if (sc->txb_padding > 0) { 1381 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 1382 for (len = sc->txb_padding; len > 0; len--) 1383 bus_space_write_1(bst, bsh, FE_BMPR8, 0); 1384 } else { 1385 for (len = sc->txb_padding >> 1; len > 0; len--) 1386 bus_space_write_2(bst, bsh, FE_BMPR8, 0); 1387 } 1388 sc->txb_padding = 0; 1389 } 1390 #endif 1391 1392 /* We need to use m->m_pkthdr.len, so require the header */ 1393 if ((m->m_flags & M_PKTHDR) == 0) 1394 panic("mb86960_write_mbufs: no header mbuf"); 1395 1396 #if FE_DEBUG >= 2 1397 /* First, count up the total number of bytes to copy. */ 1398 for (totlen = 0, mp = m; mp != 0; mp = mp->m_next) 1399 totlen += mp->m_len; 1400 /* Check if this matches the one in the packet header. */ 1401 if (totlen != m->m_pkthdr.len) 1402 log(LOG_WARNING, "%s: packet length mismatch? (%d/%d)\n", 1403 device_xname(sc->sc_dev), totlen, m->m_pkthdr.len); 1404 #else 1405 /* Just use the length value in the packet header. */ 1406 totlen = m->m_pkthdr.len; 1407 #endif 1408 1409 #if FE_DEBUG >= 1 1410 /* 1411 * Should never send big packets. If such a packet is passed, 1412 * it should be a bug of upper layer. We just ignore it. 1413 * ... Partial (too short) packets, neither. 1414 */ 1415 if (totlen > (ETHER_MAX_LEN - ETHER_CRC_LEN) || 1416 totlen < ETHER_HDR_LEN) { 1417 log(LOG_ERR, "%s: got a %s packet (%u bytes) to send\n", 1418 device_xname(sc->sc_dev), 1419 totlen < ETHER_HDR_LEN ? "partial" : "big", totlen); 1420 sc->sc_ec.ec_if.if_oerrors++; 1421 return; 1422 } 1423 #endif 1424 1425 /* 1426 * Put the length word for this frame. 1427 * Does 86960 accept odd length? -- Yes. 1428 * Do we need to pad the length to minimum size by ourselves? 1429 * -- Generally yes. But for (or will be) the last 1430 * packet in the transmission buffer, we can skip the 1431 * padding process. It may gain performance slightly. FIXME. 1432 */ 1433 len = max(totlen, (ETHER_MIN_LEN - ETHER_CRC_LEN)); 1434 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 1435 bus_space_write_1(bst, bsh, FE_BMPR8, len); 1436 bus_space_write_1(bst, bsh, FE_BMPR8, len >> 8); 1437 } else { 1438 bus_space_write_2(bst, bsh, FE_BMPR8, len); 1439 /* roundup packet length since we will use word access */ 1440 totlen = (totlen + 1) & ~1; 1441 } 1442 1443 /* 1444 * Update buffer status now. 1445 * Truncate the length up to an even number 1446 * if the chip is set in SBW_WORD mode. 1447 */ 1448 sc->txb_free -= FE_TXLEN_SIZE + 1449 max(totlen, (ETHER_MIN_LEN - ETHER_CRC_LEN)); 1450 sc->txb_count++; 1451 1452 #if FE_DELAYED_PADDING 1453 /* Postpone the packet padding if necessary. */ 1454 if (totlen < (ETHER_MIN_LEN - ETHER_CRC_LEN)) 1455 sc->txb_padding = (ETHER_MIN_LEN - ETHER_CRC_LEN) - totlen; 1456 #endif 1457 1458 /* 1459 * Transfer the data from mbuf chain to the transmission buffer. 1460 * If the MB86960 is configured in word mode, data needs to be 1461 * transferred as words, and only words. 1462 * So that we require some extra code to patch over odd-length 1463 * or unaligned mbufs. 1464 */ 1465 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 1466 /* It's simple in byte mode. */ 1467 for (; m != NULL; m = m->m_next) { 1468 if (m->m_len) { 1469 bus_space_write_multi_1(bst, bsh, FE_BMPR8, 1470 mtod(m, uint8_t *), m->m_len); 1471 } 1472 } 1473 } else { 1474 /* a bit trickier in word mode. */ 1475 uint8_t *data, savebyte[2]; 1476 int leftover; 1477 1478 leftover = 0; 1479 savebyte[0] = savebyte[1] = 0; 1480 1481 for (; m != NULL; m = m->m_next) { 1482 len = m->m_len; 1483 if (len == 0) 1484 continue; 1485 data = mtod(m, uint8_t *); 1486 while (len > 0) { 1487 if (leftover) { 1488 /* 1489 * Data left over (from mbuf or 1490 * realignment). Buffer the next 1491 * byte, and write it and the 1492 * leftover data out. 1493 */ 1494 savebyte[1] = *data++; 1495 len--; 1496 bus_space_write_stream_2(bst, bsh, 1497 FE_BMPR8, *(uint16_t *)savebyte); 1498 leftover = 0; 1499 } else if (BUS_SPACE_ALIGNED_POINTER(data, 1500 uint16_t) == 0) { 1501 /* 1502 * Unaligned data; buffer the next byte. 1503 */ 1504 savebyte[0] = *data++; 1505 len--; 1506 leftover = 1; 1507 } else { 1508 /* 1509 * Aligned data; output contiguous 1510 * words as much as we can, then 1511 * buffer the remaining byte, if any. 1512 */ 1513 leftover = len & 1; 1514 len &= ~1; 1515 bus_space_write_multi_stream_2(bst, bsh, 1516 FE_BMPR8, (uint16_t *)data, 1517 len >> 1); 1518 data += len; 1519 if (leftover) 1520 savebyte[0] = *data++; 1521 len = 0; 1522 } 1523 } 1524 if (len < 0) 1525 panic("mb86960_write_mbufs: negative len"); 1526 } 1527 if (leftover) { 1528 savebyte[1] = 0; 1529 bus_space_write_stream_2(bst, bsh, FE_BMPR8, 1530 *(uint16_t *)savebyte); 1531 } 1532 } 1533 #if FE_DELAYED_PADDING == 0 1534 /* 1535 * Pad the packet to the minimum length if necessary. 1536 */ 1537 len = (ETHER_MIN_LEN - ETHER_CRC_LEN) - totlen; 1538 if (len > 0) { 1539 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 1540 while (len-- > 0) 1541 bus_space_write_1(bst, bsh, FE_BMPR8, 0); 1542 } else { 1543 len >>= 1; 1544 while (len-- > 0) 1545 bus_space_write_2(bst, bsh, FE_BMPR8, 0); 1546 } 1547 } 1548 #endif 1549 } 1550 1551 /* 1552 * Compute the multicast address filter from the 1553 * list of multicast addresses we need to listen to. 1554 */ 1555 void 1556 mb86960_getmcaf(struct ethercom *ec, uint8_t *af) 1557 { 1558 struct ifnet *ifp = &ec->ec_if; 1559 struct ether_multi *enm; 1560 uint32_t crc; 1561 struct ether_multistep step; 1562 1563 /* 1564 * Set up multicast address filter by passing all multicast addresses 1565 * through a crc generator, and then using the high order 6 bits as an 1566 * index into the 64 bit logical address filter. The high order bit 1567 * selects the word, while the rest of the bits select the bit within 1568 * the word. 1569 */ 1570 1571 if ((ifp->if_flags & IFF_PROMISC) != 0) 1572 goto allmulti; 1573 1574 memset(af, 0, FE_FILTER_LEN); 1575 ETHER_FIRST_MULTI(step, ec, enm); 1576 while (enm != NULL) { 1577 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 1578 sizeof(enm->enm_addrlo)) != 0) { 1579 /* 1580 * We must listen to a range of multicast addresses. 1581 * For now, just accept all multicasts, rather than 1582 * trying to set only those filter bits needed to match 1583 * the range. (At this time, the only use of address 1584 * ranges is for IP multicast routing, for which the 1585 * range is big enough to require all bits set.) 1586 */ 1587 goto allmulti; 1588 } 1589 1590 crc = ether_crc32_le(enm->enm_addrlo, ETHER_ADDR_LEN); 1591 1592 /* Just want the 6 most significant bits. */ 1593 crc >>= 26; 1594 1595 /* Turn on the corresponding bit in the filter. */ 1596 af[crc >> 3] |= 1 << (crc & 7); 1597 1598 ETHER_NEXT_MULTI(step, enm); 1599 } 1600 ifp->if_flags &= ~IFF_ALLMULTI; 1601 return; 1602 1603 allmulti: 1604 ifp->if_flags |= IFF_ALLMULTI; 1605 memset(af, 0xff, FE_FILTER_LEN); 1606 } 1607 1608 /* 1609 * Calculate a new "multicast packet filter" and put the 86960 1610 * receiver in appropriate mode. 1611 */ 1612 void 1613 mb86960_setmode(struct mb86960_softc *sc) 1614 { 1615 bus_space_tag_t bst = sc->sc_bst; 1616 bus_space_handle_t bsh = sc->sc_bsh; 1617 int flags = sc->sc_ec.ec_if.if_flags; 1618 1619 /* 1620 * If the interface is not running, we postpone the update 1621 * process for receive modes and multicast address filter 1622 * until the interface is restarted. It reduces some 1623 * complicated job on maintaining chip states. (Earlier versions 1624 * of this driver had a bug on that point...) 1625 * 1626 * To complete the trick, mb86960_init() calls mb86960_setmode() after 1627 * restarting the interface. 1628 */ 1629 if ((flags & IFF_RUNNING) == 0) 1630 return; 1631 1632 /* 1633 * Promiscuous mode is handled separately. 1634 */ 1635 if ((flags & IFF_PROMISC) != 0) { 1636 /* 1637 * Program 86960 to receive all packets on the segment 1638 * including those directed to other stations. 1639 * Multicast filter stored in MARs are ignored 1640 * under this setting, so we don't need to update it. 1641 * 1642 * Promiscuous mode is used solely by BPF, and BPF only 1643 * listens to valid (no error) packets. So, we ignore 1644 * errornous ones even in this mode. 1645 */ 1646 bus_space_write_1(bst, bsh, FE_DLCR5, 1647 sc->proto_dlcr5 | FE_D5_AFM0 | FE_D5_AFM1); 1648 sc->filter_change = 0; 1649 1650 #if FE_DEBUG >= 3 1651 log(LOG_INFO, "%s: promiscuous mode\n", 1652 device_xname(sc->sc_dev)); 1653 #endif 1654 return; 1655 } 1656 1657 /* 1658 * Turn the chip to the normal (non-promiscuous) mode. 1659 */ 1660 bus_space_write_1(bst, bsh, FE_DLCR5, sc->proto_dlcr5 | FE_D5_AFM1); 1661 1662 /* 1663 * Find the new multicast filter value. 1664 */ 1665 mb86960_getmcaf(&sc->sc_ec, sc->filter); 1666 sc->filter_change = 1; 1667 1668 #if FE_DEBUG >= 3 1669 log(LOG_INFO, 1670 "%s: address filter: [%02x %02x %02x %02x %02x %02x %02x %02x]\n", 1671 device_xname(sc->sc_dev), 1672 sc->filter[0], sc->filter[1], sc->filter[2], sc->filter[3], 1673 sc->filter[4], sc->filter[5], sc->filter[6], sc->filter[7]); 1674 #endif 1675 1676 /* 1677 * We have to update the multicast filter in the 86960, A.S.A.P. 1678 * 1679 * Note that the DLC (Data Linc Control unit, i.e. transmitter 1680 * and receiver) must be stopped when feeding the filter, and 1681 * DLC trashes all packets in both transmission and receive 1682 * buffers when stopped. 1683 * 1684 * ... Are the above sentenses correct? I have to check the 1685 * manual of the MB86960A. FIXME. 1686 * 1687 * To reduce the packet lossage, we delay the filter update 1688 * process until buffers are empty. 1689 */ 1690 if (sc->txb_sched == 0 && sc->txb_count == 0 && 1691 (bus_space_read_1(bst, bsh, FE_DLCR1) & FE_D1_PKTRDY) == 0) { 1692 /* 1693 * Buffers are (apparently) empty. Load 1694 * the new filter value into MARs now. 1695 */ 1696 mb86960_loadmar(sc); 1697 } else { 1698 /* 1699 * Buffers are not empty. Mark that we have to update 1700 * the MARs. The new filter will be loaded by mb86960_intr() 1701 * later. 1702 */ 1703 #if FE_DEBUG >= 4 1704 log(LOG_INFO, "%s: filter change delayed\n", 1705 device_xname(sc->sc_dev)); 1706 #endif 1707 } 1708 } 1709 1710 /* 1711 * Load a new multicast address filter into MARs. 1712 * 1713 * The caller must have splnet'ed befor mb86960_loadmar. 1714 * This function starts the DLC upon return. So it can be called only 1715 * when the chip is working, i.e., from the driver's point of view, when 1716 * a device is RUNNING. (I mistook the point in previous versions.) 1717 */ 1718 void 1719 mb86960_loadmar(struct mb86960_softc *sc) 1720 { 1721 bus_space_tag_t bst = sc->sc_bst; 1722 bus_space_handle_t bsh = sc->sc_bsh; 1723 1724 /* Stop the DLC (transmitter and receiver). */ 1725 bus_space_write_1(bst, bsh, FE_DLCR6, 1726 sc->proto_dlcr6 | FE_D6_DLC_DISABLE); 1727 1728 /* Select register bank 1 for MARs. */ 1729 bus_space_write_1(bst, bsh, FE_DLCR7, 1730 sc->proto_dlcr7 | FE_D7_RBS_MAR | FE_D7_POWER_UP); 1731 1732 /* Copy filter value into the registers. */ 1733 bus_space_write_region_1(bst, bsh, FE_MAR8, sc->filter, FE_FILTER_LEN); 1734 1735 /* Restore the bank selection for BMPRs (i.e., runtime registers). */ 1736 bus_space_write_1(bst, bsh, FE_DLCR7, 1737 sc->proto_dlcr7 | FE_D7_RBS_BMPR | FE_D7_POWER_UP); 1738 1739 /* Restart the DLC. */ 1740 bus_space_write_1(bst, bsh, FE_DLCR6, 1741 sc->proto_dlcr6 | FE_D6_DLC_ENABLE); 1742 1743 /* We have just updated the filter. */ 1744 sc->filter_change = 0; 1745 1746 #if FE_DEBUG >= 3 1747 log(LOG_INFO, "%s: address filter changed\n", device_xname(sc->sc_dev)); 1748 #endif 1749 } 1750 1751 /* 1752 * Enable power on the interface. 1753 */ 1754 int 1755 mb86960_enable(struct mb86960_softc *sc) 1756 { 1757 1758 #if FE_DEBUG >= 3 1759 log(LOG_INFO, "%s: mb86960_enable()\n", device_xname(sc->sc_dev)); 1760 #endif 1761 1762 if ((sc->sc_stat & FE_STAT_ENABLED) == 0 && sc->sc_enable != NULL) { 1763 if ((*sc->sc_enable)(sc) != 0) { 1764 aprint_error_dev(sc->sc_dev, "device enable failed\n"); 1765 return EIO; 1766 } 1767 } 1768 1769 sc->sc_stat |= FE_STAT_ENABLED; 1770 return 0; 1771 } 1772 1773 /* 1774 * Disable power on the interface. 1775 */ 1776 void 1777 mb86960_disable(struct mb86960_softc *sc) 1778 { 1779 1780 #if FE_DEBUG >= 3 1781 log(LOG_INFO, "%s: mb86960_disable()\n", device_xname(sc->sc_dev)); 1782 #endif 1783 1784 if ((sc->sc_stat & FE_STAT_ENABLED) != 0 && sc->sc_disable != NULL) { 1785 (*sc->sc_disable)(sc); 1786 sc->sc_stat &= ~FE_STAT_ENABLED; 1787 } 1788 } 1789 1790 /* 1791 * mbe_activate: 1792 * 1793 * Handle device activation/deactivation requests. 1794 */ 1795 int 1796 mb86960_activate(device_t self, enum devact act) 1797 { 1798 struct mb86960_softc *sc = device_private(self); 1799 1800 switch (act) { 1801 case DVACT_DEACTIVATE: 1802 if_deactivate(&sc->sc_ec.ec_if); 1803 return 0; 1804 default: 1805 return EOPNOTSUPP; 1806 } 1807 } 1808 1809 /* 1810 * mb86960_detach: 1811 * 1812 * Detach a MB86960 interface. 1813 */ 1814 int 1815 mb86960_detach(struct mb86960_softc *sc) 1816 { 1817 struct ifnet *ifp = &sc->sc_ec.ec_if; 1818 1819 /* Succeed now if there's no work to do. */ 1820 if ((sc->sc_stat & FE_STAT_ATTACHED) == 0) 1821 return 0; 1822 1823 /* Delete all media. */ 1824 ifmedia_delete_instance(&sc->sc_media, IFM_INST_ANY); 1825 1826 #if NRND > 0 1827 /* Unhook the entropy source. */ 1828 rnd_detach_source(&sc->rnd_source); 1829 #endif 1830 ether_ifdetach(ifp); 1831 if_detach(ifp); 1832 1833 mb86960_disable(sc); 1834 return 0; 1835 } 1836 1837 /* 1838 * Routines to read all bytes from the config EEPROM (93C06) through MB86965A. 1839 */ 1840 void 1841 mb86965_read_eeprom(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t *data) 1842 { 1843 int addr, op, bit; 1844 uint16_t val; 1845 1846 /* Read bytes from EEPROM; two bytes per an iteration. */ 1847 for (addr = 0; addr < FE_EEPROM_SIZE / 2; addr++) { 1848 /* Reset the EEPROM interface. */ 1849 bus_space_write_1(iot, ioh, FE_BMPR16, 0x00); 1850 bus_space_write_1(iot, ioh, FE_BMPR17, 0x00); 1851 bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT); 1852 1853 /* Send start bit. */ 1854 bus_space_write_1(iot, ioh, FE_BMPR17, FE_B17_DATA); 1855 FE_EEPROM_DELAY(); 1856 bus_space_write_1(iot, ioh, 1857 FE_BMPR16, FE_B16_SELECT | FE_B16_CLOCK); 1858 FE_EEPROM_DELAY(); 1859 bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT); 1860 1861 /* Send read command and read address. */ 1862 op = 0x80 | addr; /* READ instruction */ 1863 for (bit = 8; bit > 0; bit--) { 1864 bus_space_write_1(iot, ioh, FE_BMPR17, 1865 (op & (1 << (bit - 1))) ? FE_B17_DATA : 0); 1866 FE_EEPROM_DELAY(); 1867 bus_space_write_1(iot, ioh, 1868 FE_BMPR16, FE_B16_SELECT | FE_B16_CLOCK); 1869 FE_EEPROM_DELAY(); 1870 bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT); 1871 } 1872 bus_space_write_1(iot, ioh, FE_BMPR17, 0x00); 1873 1874 /* Read two bytes in each address */ 1875 val = 0; 1876 for (bit = 16; bit > 0; bit--) { 1877 FE_EEPROM_DELAY(); 1878 bus_space_write_1(iot, ioh, 1879 FE_BMPR16, FE_B16_SELECT | FE_B16_CLOCK); 1880 FE_EEPROM_DELAY(); 1881 if (bus_space_read_1(iot, ioh, FE_BMPR17) & 1882 FE_B17_DATA) 1883 val |= 1 << (bit - 1); 1884 bus_space_write_1(iot, ioh, 1885 FE_BMPR16, FE_B16_SELECT); 1886 } 1887 data[addr * 2] = val >> 8; 1888 data[addr * 2 + 1] = val & 0xff; 1889 } 1890 1891 /* Make sure the EEPROM is turned off. */ 1892 bus_space_write_1(iot, ioh, FE_BMPR16, 0); 1893 bus_space_write_1(iot, ioh, FE_BMPR17, 0); 1894 1895 #if FE_DEBUG >= 3 1896 /* Report what we got. */ 1897 log(LOG_INFO, "mb86965_read_eeprom: " 1898 " %02x%02x%02x%02x %02x%02x%02x%02x -" 1899 " %02x%02x%02x%02x %02x%02x%02x%02x -" 1900 " %02x%02x%02x%02x %02x%02x%02x%02x -" 1901 " %02x%02x%02x%02x %02x%02x%02x%02x\n", 1902 data[ 0], data[ 1], data[ 2], data[ 3], 1903 data[ 4], data[ 5], data[ 6], data[ 7], 1904 data[ 8], data[ 9], data[10], data[11], 1905 data[12], data[13], data[14], data[15], 1906 data[16], data[17], data[18], data[19], 1907 data[20], data[21], data[22], data[23], 1908 data[24], data[25], data[26], data[27], 1909 data[28], data[29], data[30], data[31]); 1910 #endif 1911 } 1912 1913 #if FE_DEBUG >= 1 1914 void 1915 mb86960_dump(int level, struct mb86960_softc *sc) 1916 { 1917 bus_space_tag_t bst = sc->sc_bst; 1918 bus_space_handle_t bsh = sc->sc_bsh; 1919 uint8_t save_dlcr7; 1920 1921 save_dlcr7 = bus_space_read_1(bst, bsh, FE_DLCR7); 1922 1923 log(level, "\tDLCR = %02x %02x %02x %02x %02x %02x %02x %02x\n", 1924 bus_space_read_1(bst, bsh, FE_DLCR0), 1925 bus_space_read_1(bst, bsh, FE_DLCR1), 1926 bus_space_read_1(bst, bsh, FE_DLCR2), 1927 bus_space_read_1(bst, bsh, FE_DLCR3), 1928 bus_space_read_1(bst, bsh, FE_DLCR4), 1929 bus_space_read_1(bst, bsh, FE_DLCR5), 1930 bus_space_read_1(bst, bsh, FE_DLCR6), 1931 bus_space_read_1(bst, bsh, FE_DLCR7)); 1932 1933 bus_space_write_1(bst, bsh, FE_DLCR7, 1934 (save_dlcr7 & ~FE_D7_RBS) | FE_D7_RBS_DLCR); 1935 log(level, "\t %02x %02x %02x %02x %02x %02x %02x %02x\n", 1936 bus_space_read_1(bst, bsh, FE_DLCR8), 1937 bus_space_read_1(bst, bsh, FE_DLCR9), 1938 bus_space_read_1(bst, bsh, FE_DLCR10), 1939 bus_space_read_1(bst, bsh, FE_DLCR11), 1940 bus_space_read_1(bst, bsh, FE_DLCR12), 1941 bus_space_read_1(bst, bsh, FE_DLCR13), 1942 bus_space_read_1(bst, bsh, FE_DLCR14), 1943 bus_space_read_1(bst, bsh, FE_DLCR15)); 1944 1945 bus_space_write_1(bst, bsh, FE_DLCR7, 1946 (save_dlcr7 & ~FE_D7_RBS) | FE_D7_RBS_MAR); 1947 log(level, "\tMAR = %02x %02x %02x %02x %02x %02x %02x %02x\n", 1948 bus_space_read_1(bst, bsh, FE_MAR8), 1949 bus_space_read_1(bst, bsh, FE_MAR9), 1950 bus_space_read_1(bst, bsh, FE_MAR10), 1951 bus_space_read_1(bst, bsh, FE_MAR11), 1952 bus_space_read_1(bst, bsh, FE_MAR12), 1953 bus_space_read_1(bst, bsh, FE_MAR13), 1954 bus_space_read_1(bst, bsh, FE_MAR14), 1955 bus_space_read_1(bst, bsh, FE_MAR15)); 1956 1957 bus_space_write_1(bst, bsh, FE_DLCR7, 1958 (save_dlcr7 & ~FE_D7_RBS) | FE_D7_RBS_BMPR); 1959 log(level, 1960 "\tBMPR = xx xx %02x %02x %02x %02x %02x %02x %02x %02x xx %02x\n", 1961 bus_space_read_1(bst, bsh, FE_BMPR10), 1962 bus_space_read_1(bst, bsh, FE_BMPR11), 1963 bus_space_read_1(bst, bsh, FE_BMPR12), 1964 bus_space_read_1(bst, bsh, FE_BMPR13), 1965 bus_space_read_1(bst, bsh, FE_BMPR14), 1966 bus_space_read_1(bst, bsh, FE_BMPR15), 1967 bus_space_read_1(bst, bsh, FE_BMPR16), 1968 bus_space_read_1(bst, bsh, FE_BMPR17), 1969 bus_space_read_1(bst, bsh, FE_BMPR19)); 1970 1971 bus_space_write_1(bst, bsh, FE_DLCR7, save_dlcr7); 1972 } 1973 #endif 1974 1975