mb86960.c revision 1.56.2.4
1 /* $NetBSD: mb86960.c,v 1.56.2.4 2004/11/02 07:51:31 skrll 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 1.56.2.4 2004/11/02 07:51:31 skrll Exp $"); 36 37 /* 38 * Device driver for Fujitsu MB86960A/MB86965A based Ethernet cards. 39 * Contributed by M.S. <seki (at) 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 "opt_ns.h" 52 #include "bpfilter.h" 53 #include "rnd.h" 54 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <sys/errno.h> 58 #include <sys/ioctl.h> 59 #include <sys/mbuf.h> 60 #include <sys/socket.h> 61 #include <sys/syslog.h> 62 #include <sys/device.h> 63 #if NRND > 0 64 #include <sys/rnd.h> 65 #endif 66 67 #include <net/if.h> 68 #include <net/if_dl.h> 69 #include <net/if_types.h> 70 #include <net/if_media.h> 71 #include <net/if_ether.h> 72 73 #ifdef INET 74 #include <netinet/in.h> 75 #include <netinet/in_systm.h> 76 #include <netinet/in_var.h> 77 #include <netinet/ip.h> 78 #include <netinet/if_inarp.h> 79 #endif 80 81 #ifdef NS 82 #include <netns/ns.h> 83 #include <netns/ns_if.h> 84 #endif 85 86 #if NBPFILTER > 0 87 #include <net/bpf.h> 88 #include <net/bpfdesc.h> 89 #endif 90 91 #include <machine/bus.h> 92 93 #include <dev/ic/mb86960reg.h> 94 #include <dev/ic/mb86960var.h> 95 96 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 97 #define bus_space_write_stream_2 bus_space_write_2 98 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 99 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 100 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 101 102 /* Standard driver entry points. These can be static. */ 103 void mb86960_init __P((struct mb86960_softc *)); 104 int mb86960_ioctl __P((struct ifnet *, u_long, caddr_t)); 105 void mb86960_start __P((struct ifnet *)); 106 void mb86960_reset __P((struct mb86960_softc *)); 107 void mb86960_watchdog __P((struct ifnet *)); 108 109 /* Local functions. Order of declaration is confused. FIXME. */ 110 int mb86960_get_packet __P((struct mb86960_softc *, u_int)); 111 void mb86960_stop __P((struct mb86960_softc *)); 112 void mb86960_tint __P((struct mb86960_softc *, u_int8_t)); 113 void mb86960_rint __P((struct mb86960_softc *, u_int8_t)); 114 static __inline__ 115 void mb86960_xmit __P((struct mb86960_softc *)); 116 void mb86960_write_mbufs __P((struct mb86960_softc *, struct mbuf *)); 117 static __inline__ 118 void mb86960_droppacket __P((struct mb86960_softc *)); 119 void mb86960_getmcaf __P((struct ethercom *, u_int8_t *)); 120 void mb86960_setmode __P((struct mb86960_softc *)); 121 void mb86960_loadmar __P((struct mb86960_softc *)); 122 123 int mb86960_mediachange __P((struct ifnet *)); 124 void mb86960_mediastatus __P((struct ifnet *, struct ifmediareq *)); 125 126 #if FE_DEBUG >= 1 127 void mb86960_dump __P((int, struct mb86960_softc *)); 128 #endif 129 130 void 131 mb86960_attach(sc, myea) 132 struct mb86960_softc *sc; 133 u_int8_t *myea; 134 { 135 bus_space_tag_t bst = sc->sc_bst; 136 bus_space_handle_t bsh = sc->sc_bsh; 137 138 /* Register values which depend on board design. */ 139 sc->proto_dlcr4 = FE_D4_LBC_DISABLE | FE_D4_CNTRL; 140 sc->proto_dlcr5 = 0; 141 sc->proto_dlcr7 = FE_D7_BYTSWP_LH; 142 if ((sc->sc_flags & FE_FLAGS_MB86960) != 0) 143 sc->proto_dlcr7 |= FE_D7_ED_TEST; /* XXX */ 144 sc->proto_bmpr13 = FE_B13_TPTYPE_UTP | FE_B13_PORT_AUTO; 145 146 /* 147 * Program the 86960 as following defaults: 148 * SRAM: 32KB, 100ns, byte-wide access. 149 * Transmission buffer: 4KB x 2. 150 * System bus interface: 16 bits. 151 * These values except TXBSIZE should be modified as per 152 * sc_flags which is set in MD attachments, because they 153 * are hard-wired on the board. Modifying TXBSIZE will affect 154 * the driver performance. 155 */ 156 sc->proto_dlcr6 = FE_D6_BUFSIZ_32KB | FE_D6_TXBSIZ_2x4KB | 157 FE_D6_BBW_BYTE | FE_D6_SRAM_100ns; 158 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) 159 sc->proto_dlcr6 |= FE_D6_SBW_BYTE; 160 if (sc->sc_flags & FE_FLAGS_SRAM_150ns) 161 sc->proto_dlcr6 &= ~FE_D6_SRAM_100ns; 162 163 /* 164 * Minimum initialization of the hardware. 165 * We write into registers; hope I/O ports have no 166 * overlap with other boards. 167 */ 168 169 /* Initialize 86960. */ 170 bus_space_write_1(bst, bsh, FE_DLCR6, 171 sc->proto_dlcr6 | FE_D6_DLC_DISABLE); 172 delay(200); 173 174 #ifdef DIAGNOSTIC 175 if (myea == NULL) { 176 printf("%s: ethernet address shouldn't be NULL\n", 177 sc->sc_dev.dv_xname); 178 panic("NULL ethernet address"); 179 } 180 #endif 181 memcpy(sc->sc_enaddr, myea, sizeof(sc->sc_enaddr)); 182 183 /* Disable all interrupts. */ 184 bus_space_write_1(bst, bsh, FE_DLCR2, 0); 185 bus_space_write_1(bst, bsh, FE_DLCR3, 0); 186 } 187 188 /* 189 * Install interface into kernel networking data structures 190 */ 191 void 192 mb86960_config(sc, media, nmedia, defmedia) 193 struct mb86960_softc *sc; 194 int *media, nmedia, defmedia; 195 { 196 struct cfdata *cf = sc->sc_dev.dv_cfdata; 197 struct ifnet *ifp = &sc->sc_ec.ec_if; 198 int i; 199 200 /* Stop the 86960. */ 201 mb86960_stop(sc); 202 203 /* Initialize ifnet structure. */ 204 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 205 ifp->if_softc = sc; 206 ifp->if_start = mb86960_start; 207 ifp->if_ioctl = mb86960_ioctl; 208 ifp->if_watchdog = mb86960_watchdog; 209 ifp->if_flags = 210 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 211 IFQ_SET_READY(&ifp->if_snd); 212 213 #if FE_DEBUG >= 3 214 log(LOG_INFO, "%s: mb86960_config()\n", sc->sc_dev.dv_xname); 215 mb86960_dump(LOG_INFO, sc); 216 #endif 217 218 #if FE_SINGLE_TRANSMISSION 219 /* Override txb config to allocate minimum. */ 220 sc->proto_dlcr6 &= ~FE_D6_TXBSIZ; 221 sc->proto_dlcr6 |= FE_D6_TXBSIZ_2x2KB; 222 #endif 223 224 /* Modify hardware config if it is requested. */ 225 if ((cf->cf_flags & FE_FLAGS_OVERRIDE_DLCR6) != 0) 226 sc->proto_dlcr6 = cf->cf_flags & FE_FLAGS_DLCR6_VALUE; 227 228 /* Find TX buffer size, based on the hardware dependent proto. */ 229 switch (sc->proto_dlcr6 & FE_D6_TXBSIZ) { 230 case FE_D6_TXBSIZ_2x2KB: 231 sc->txb_size = 2048; 232 break; 233 case FE_D6_TXBSIZ_2x4KB: 234 sc->txb_size = 4096; 235 break; 236 case FE_D6_TXBSIZ_2x8KB: 237 sc->txb_size = 8192; 238 break; 239 default: 240 /* Oops, we can't work with single buffer configuration. */ 241 #if FE_DEBUG >= 2 242 log(LOG_WARNING, "%s: strange TXBSIZ config; fixing\n", 243 sc->sc_dev.dv_xname); 244 #endif 245 sc->proto_dlcr6 &= ~FE_D6_TXBSIZ; 246 sc->proto_dlcr6 |= FE_D6_TXBSIZ_2x2KB; 247 sc->txb_size = 2048; 248 break; 249 } 250 251 /* Initialize media goo. */ 252 ifmedia_init(&sc->sc_media, 0, mb86960_mediachange, 253 mb86960_mediastatus); 254 if (media != NULL) { 255 for (i = 0; i < nmedia; i++) 256 ifmedia_add(&sc->sc_media, media[i], 0, NULL); 257 ifmedia_set(&sc->sc_media, defmedia); 258 } else { 259 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL); 260 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL); 261 } 262 263 /* Attach the interface. */ 264 if_attach(ifp); 265 ether_ifattach(ifp, sc->sc_enaddr); 266 267 #if NRND > 0 268 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 269 RND_TYPE_NET, 0); 270 #endif 271 /* Print additional info when attached. */ 272 printf("%s: Ethernet address %s\n", sc->sc_dev.dv_xname, 273 ether_sprintf(sc->sc_enaddr)); 274 275 #if FE_DEBUG >= 3 276 { 277 int buf, txb, bbw, sbw, ram; 278 279 buf = txb = bbw = sbw = ram = -1; 280 switch (sc->proto_dlcr6 & FE_D6_BUFSIZ) { 281 case FE_D6_BUFSIZ_8KB: 282 buf = 8; 283 break; 284 case FE_D6_BUFSIZ_16KB: 285 buf = 16; 286 break; 287 case FE_D6_BUFSIZ_32KB: 288 buf = 32; 289 break; 290 case FE_D6_BUFSIZ_64KB: 291 buf = 64; 292 break; 293 } 294 switch (sc->proto_dlcr6 & FE_D6_TXBSIZ) { 295 case FE_D6_TXBSIZ_2x2KB: 296 txb = 2; 297 break; 298 case FE_D6_TXBSIZ_2x4KB: 299 txb = 4; 300 break; 301 case FE_D6_TXBSIZ_2x8KB: 302 txb = 8; 303 break; 304 } 305 switch (sc->proto_dlcr6 & FE_D6_BBW) { 306 case FE_D6_BBW_BYTE: 307 bbw = 8; 308 break; 309 case FE_D6_BBW_WORD: 310 bbw = 16; 311 break; 312 } 313 switch (sc->proto_dlcr6 & FE_D6_SBW) { 314 case FE_D6_SBW_BYTE: 315 sbw = 8; 316 break; 317 case FE_D6_SBW_WORD: 318 sbw = 16; 319 break; 320 } 321 switch (sc->proto_dlcr6 & FE_D6_SRAM) { 322 case FE_D6_SRAM_100ns: 323 ram = 100; 324 break; 325 case FE_D6_SRAM_150ns: 326 ram = 150; 327 break; 328 } 329 printf("%s: SRAM %dKB %dbit %dns, TXB %dKBx2, %dbit I/O\n", 330 sc->sc_dev.dv_xname, buf, bbw, ram, txb, sbw); 331 } 332 #endif 333 334 /* The attach is successful. */ 335 sc->sc_stat |= FE_STAT_ATTACHED; 336 } 337 338 /* 339 * Media change callback. 340 */ 341 int 342 mb86960_mediachange(ifp) 343 struct ifnet *ifp; 344 { 345 struct mb86960_softc *sc = ifp->if_softc; 346 347 if (sc->sc_mediachange) 348 return ((*sc->sc_mediachange)(sc)); 349 return (0); 350 } 351 352 /* 353 * Media status callback. 354 */ 355 void 356 mb86960_mediastatus(ifp, ifmr) 357 struct ifnet *ifp; 358 struct ifmediareq *ifmr; 359 { 360 struct mb86960_softc *sc = ifp->if_softc; 361 362 if ((sc->sc_stat & FE_STAT_ENABLED) == 0) { 363 ifmr->ifm_active = IFM_ETHER | IFM_NONE; 364 ifmr->ifm_status = 0; 365 return; 366 } 367 368 if (sc->sc_mediastatus) 369 (*sc->sc_mediastatus)(sc, ifmr); 370 } 371 372 /* 373 * Reset interface. 374 */ 375 void 376 mb86960_reset(sc) 377 struct mb86960_softc *sc; 378 { 379 int s; 380 381 s = splnet(); 382 mb86960_stop(sc); 383 mb86960_init(sc); 384 splx(s); 385 } 386 387 /* 388 * Stop everything on the interface. 389 * 390 * All buffered packets, both transmitting and receiving, 391 * if any, will be lost by stopping the interface. 392 */ 393 void 394 mb86960_stop(sc) 395 struct mb86960_softc *sc; 396 { 397 bus_space_tag_t bst = sc->sc_bst; 398 bus_space_handle_t bsh = sc->sc_bsh; 399 400 #if FE_DEBUG >= 3 401 log(LOG_INFO, "%s: top of mb86960_stop()\n", sc->sc_dev.dv_xname); 402 mb86960_dump(LOG_INFO, sc); 403 #endif 404 405 /* Disable interrupts. */ 406 bus_space_write_1(bst, bsh, FE_DLCR2, 0x00); 407 bus_space_write_1(bst, bsh, FE_DLCR3, 0x00); 408 409 /* Stop interface hardware. */ 410 delay(200); 411 bus_space_write_1(bst, bsh, FE_DLCR6, 412 sc->proto_dlcr6 | FE_D6_DLC_DISABLE); 413 delay(200); 414 415 /* Clear all interrupt status. */ 416 bus_space_write_1(bst, bsh, FE_DLCR0, 0xFF); 417 bus_space_write_1(bst, bsh, FE_DLCR1, 0xFF); 418 419 /* Put the chip in stand-by mode. */ 420 delay(200); 421 bus_space_write_1(bst, bsh, FE_DLCR7, 422 sc->proto_dlcr7 | FE_D7_POWER_DOWN); 423 delay(200); 424 425 /* MAR loading can be delayed. */ 426 sc->filter_change = 0; 427 428 /* Call a hook. */ 429 if (sc->stop_card) 430 (*sc->stop_card)(sc); 431 432 #if FE_DEBUG >= 3 433 log(LOG_INFO, "%s: end of mb86960_stop()\n", sc->sc_dev.dv_xname); 434 mb86960_dump(LOG_INFO, sc); 435 #endif 436 } 437 438 /* 439 * Device timeout/watchdog routine. Entered if the device neglects to 440 * generate an interrupt after a transmit has been started on it. 441 */ 442 void 443 mb86960_watchdog(ifp) 444 struct ifnet *ifp; 445 { 446 struct mb86960_softc *sc = ifp->if_softc; 447 448 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 449 #if FE_DEBUG >= 3 450 mb86960_dump(LOG_INFO, sc); 451 #endif 452 453 /* Record how many packets are lost by this accident. */ 454 sc->sc_ec.ec_if.if_oerrors += sc->txb_sched + sc->txb_count; 455 456 mb86960_reset(sc); 457 } 458 459 /* 460 * Drop (skip) a packet from receive buffer in 86960 memory. 461 */ 462 static __inline__ void 463 mb86960_droppacket(sc) 464 struct mb86960_softc *sc; 465 { 466 bus_space_tag_t bst = sc->sc_bst; 467 bus_space_handle_t bsh = sc->sc_bsh; 468 469 bus_space_write_1(bst, bsh, FE_BMPR14, FE_B14_FILTER | FE_B14_SKIP); 470 } 471 472 /* 473 * Initialize device. 474 */ 475 void 476 mb86960_init(sc) 477 struct mb86960_softc *sc; 478 { 479 bus_space_tag_t bst = sc->sc_bst; 480 bus_space_handle_t bsh = sc->sc_bsh; 481 struct ifnet *ifp = &sc->sc_ec.ec_if; 482 int i; 483 484 #if FE_DEBUG >= 3 485 log(LOG_INFO, "%s: top of mb86960_init()\n", sc->sc_dev.dv_xname); 486 mb86960_dump(LOG_INFO, sc); 487 #endif 488 489 /* Reset transmitter flags. */ 490 ifp->if_flags &= ~IFF_OACTIVE; 491 ifp->if_timer = 0; 492 493 sc->txb_free = sc->txb_size; 494 sc->txb_count = 0; 495 sc->txb_sched = 0; 496 497 /* Do any card-specific initialization, if applicable. */ 498 if (sc->init_card) 499 (*sc->init_card)(sc); 500 501 #if FE_DEBUG >= 3 502 log(LOG_INFO, "%s: after init hook\n", sc->sc_dev.dv_xname); 503 mb86960_dump(LOG_INFO, sc); 504 #endif 505 506 /* 507 * Make sure to disable the chip, also. 508 * This may also help re-programming the chip after 509 * hot insertion of PCMCIAs. 510 */ 511 bus_space_write_1(bst, bsh, FE_DLCR6, 512 sc->proto_dlcr6 | FE_D6_DLC_DISABLE); 513 delay(200); 514 515 /* Power up the chip and select register bank for DLCRs. */ 516 bus_space_write_1(bst, bsh, FE_DLCR7, 517 sc->proto_dlcr7 | FE_D7_RBS_DLCR | FE_D7_POWER_UP); 518 delay(200); 519 520 /* Feed the station address. */ 521 bus_space_write_region_1(bst, bsh, FE_DLCR8, 522 sc->sc_enaddr, ETHER_ADDR_LEN); 523 524 /* Select the BMPR bank for runtime register access. */ 525 bus_space_write_1(bst, bsh, FE_DLCR7, 526 sc->proto_dlcr7 | FE_D7_RBS_BMPR | FE_D7_POWER_UP); 527 528 /* Initialize registers. */ 529 bus_space_write_1(bst, bsh, FE_DLCR0, 0xFF); /* Clear all bits. */ 530 bus_space_write_1(bst, bsh, FE_DLCR1, 0xFF); /* ditto. */ 531 bus_space_write_1(bst, bsh, FE_DLCR2, 0x00); 532 bus_space_write_1(bst, bsh, FE_DLCR3, 0x00); 533 bus_space_write_1(bst, bsh, FE_DLCR4, sc->proto_dlcr4); 534 bus_space_write_1(bst, bsh, FE_DLCR5, sc->proto_dlcr5); 535 bus_space_write_1(bst, bsh, FE_BMPR10, 0x00); 536 bus_space_write_1(bst, bsh, FE_BMPR11, FE_B11_CTRL_SKIP); 537 bus_space_write_1(bst, bsh, FE_BMPR12, 0x00); 538 bus_space_write_1(bst, bsh, FE_BMPR13, sc->proto_bmpr13); 539 bus_space_write_1(bst, bsh, FE_BMPR14, FE_B14_FILTER); 540 bus_space_write_1(bst, bsh, FE_BMPR15, 0x00); 541 542 #if FE_DEBUG >= 3 543 log(LOG_INFO, "%s: just before enabling DLC\n", sc->sc_dev.dv_xname); 544 mb86960_dump(LOG_INFO, sc); 545 #endif 546 547 /* Enable interrupts. */ 548 bus_space_write_1(bst, bsh, FE_DLCR2, FE_TMASK); 549 bus_space_write_1(bst, bsh, FE_DLCR3, FE_RMASK); 550 551 /* Enable transmitter and receiver. */ 552 delay(200); 553 bus_space_write_1(bst, bsh, FE_DLCR6, 554 sc->proto_dlcr6 | FE_D6_DLC_ENABLE); 555 delay(200); 556 557 #if FE_DEBUG >= 3 558 log(LOG_INFO, "%s: just after enabling DLC\n", sc->sc_dev.dv_xname); 559 mb86960_dump(LOG_INFO, sc); 560 #endif 561 562 /* 563 * Make sure to empty the receive buffer. 564 * 565 * This may be redundant, but *if* the receive buffer were full 566 * at this point, the driver would hang. I have experienced 567 * some strange hangups just after UP. I hope the following 568 * code solve the problem. 569 * 570 * I have changed the order of hardware initialization. 571 * I think the receive buffer cannot have any packets at this 572 * point in this version. The following code *must* be 573 * redundant now. FIXME. 574 */ 575 for (i = 0; i < FE_MAX_RECV_COUNT; i++) { 576 if (bus_space_read_1(bst, bsh, FE_DLCR5) & FE_D5_BUFEMP) 577 break; 578 mb86960_droppacket(sc); 579 } 580 #if FE_DEBUG >= 1 581 if (i >= FE_MAX_RECV_COUNT) 582 log(LOG_ERR, "%s: cannot empty receive buffer\n", 583 sc->sc_dev.dv_xname); 584 #endif 585 #if FE_DEBUG >= 3 586 if (i < FE_MAX_RECV_COUNT) 587 log(LOG_INFO, "%s: receive buffer emptied (%d)\n", 588 sc->sc_dev.dv_xname, i); 589 #endif 590 591 #if FE_DEBUG >= 3 592 log(LOG_INFO, "%s: after ERB loop\n", sc->sc_dev.dv_xname); 593 mb86960_dump(LOG_INFO, sc); 594 #endif 595 596 /* Do we need this here? */ 597 bus_space_write_1(bst, bsh, FE_DLCR0, 0xFF); /* Clear all bits. */ 598 bus_space_write_1(bst, bsh, FE_DLCR1, 0xFF); /* ditto. */ 599 600 #if FE_DEBUG >= 3 601 log(LOG_INFO, "%s: after FIXME\n", sc->sc_dev.dv_xname); 602 mb86960_dump(LOG_INFO, sc); 603 #endif 604 605 /* Set 'running' flag. */ 606 ifp->if_flags |= IFF_RUNNING; 607 608 /* 609 * At this point, the interface is runnung properly, 610 * except that it receives *no* packets. we then call 611 * mb86960_setmode() to tell the chip what packets to be 612 * received, based on the if_flags and multicast group 613 * list. It completes the initialization process. 614 */ 615 mb86960_setmode(sc); 616 617 #if FE_DEBUG >= 3 618 log(LOG_INFO, "%s: after setmode\n", sc->sc_dev.dv_xname); 619 mb86960_dump(LOG_INFO, sc); 620 #endif 621 622 /* ...and attempt to start output. */ 623 mb86960_start(ifp); 624 625 #if FE_DEBUG >= 3 626 log(LOG_INFO, "%s: end of mb86960_init()\n", sc->sc_dev.dv_xname); 627 mb86960_dump(LOG_INFO, sc); 628 #endif 629 } 630 631 /* 632 * This routine actually starts the transmission on the interface 633 */ 634 static __inline__ void 635 mb86960_xmit(sc) 636 struct mb86960_softc *sc; 637 { 638 bus_space_tag_t bst = sc->sc_bst; 639 bus_space_handle_t bsh = sc->sc_bsh; 640 641 /* 642 * Set a timer just in case we never hear from the board again. 643 * We use longer timeout for multiple packet transmission. 644 * I'm not sure this timer value is appropriate. FIXME. 645 */ 646 sc->sc_ec.ec_if.if_timer = 1 + sc->txb_count; 647 648 /* Update txb variables. */ 649 sc->txb_sched = sc->txb_count; 650 sc->txb_count = 0; 651 sc->txb_free = sc->txb_size; 652 653 #if FE_DELAYED_PADDING 654 /* Omit the postponed padding process. */ 655 sc->txb_padding = 0; 656 #endif 657 658 /* Start transmitter, passing packets in TX buffer. */ 659 bus_space_write_1(bst, bsh, FE_BMPR10, sc->txb_sched | FE_B10_START); 660 } 661 662 /* 663 * Start output on interface. 664 * We make two assumptions here: 665 * 1) that the current priority is set to splnet _before_ this code 666 * is called *and* is returned to the appropriate priority after 667 * return 668 * 2) that the IFF_OACTIVE flag is checked before this code is called 669 * (i.e. that the output part of the interface is idle) 670 */ 671 void 672 mb86960_start(ifp) 673 struct ifnet *ifp; 674 { 675 struct mb86960_softc *sc = ifp->if_softc; 676 struct mbuf *m; 677 678 #if FE_DEBUG >= 1 679 /* Just a sanity check. */ 680 if ((sc->txb_count == 0) != (sc->txb_free == sc->txb_size)) { 681 /* 682 * Txb_count and txb_free co-works to manage the 683 * transmission buffer. Txb_count keeps track of the 684 * used potion of the buffer, while txb_free does unused 685 * potion. So, as long as the driver runs properly, 686 * txb_count is zero if and only if txb_free is same 687 * as txb_size (which represents whole buffer.) 688 */ 689 log(LOG_ERR, "%s: inconsistent txb variables (%d, %d)\n", 690 sc->sc_dev.dv_xname, sc->txb_count, sc->txb_free); 691 /* 692 * So, what should I do, then? 693 * 694 * We now know txb_count and txb_free contradicts. We 695 * cannot, however, tell which is wrong. More 696 * over, we cannot peek 86960 transmission buffer or 697 * reset the transmission buffer. (In fact, we can 698 * reset the entire interface. I don't want to do it.) 699 * 700 * If txb_count is incorrect, leaving it as is will cause 701 * sending of gabages after next interrupt. We have to 702 * avoid it. Hence, we reset the txb_count here. If 703 * txb_free was incorrect, resetting txb_count just loose 704 * some packets. We can live with it. 705 */ 706 sc->txb_count = 0; 707 } 708 #endif 709 710 #if FE_DEBUG >= 1 711 /* 712 * First, see if there are buffered packets and an idle 713 * transmitter - should never happen at this point. 714 */ 715 if ((sc->txb_count > 0) && (sc->txb_sched == 0)) { 716 log(LOG_ERR, "%s: transmitter idle with %d buffered packets\n", 717 sc->sc_dev.dv_xname, sc->txb_count); 718 mb86960_xmit(sc); 719 } 720 #endif 721 722 /* 723 * Stop accepting more transmission packets temporarily, when 724 * a filter change request is delayed. Updating the MARs on 725 * 86960 flushes the transmisstion buffer, so it is delayed 726 * until all buffered transmission packets have been sent 727 * out. 728 */ 729 if (sc->filter_change) { 730 /* 731 * Filter change request is delayed only when the DLC is 732 * working. DLC soon raise an interrupt after finishing 733 * the work. 734 */ 735 goto indicate_active; 736 } 737 738 for (;;) { 739 /* 740 * See if there is room to put another packet in the buffer. 741 * We *could* do better job by peeking the send queue to 742 * know the length of the next packet. Current version just 743 * tests against the worst case (i.e., longest packet). FIXME. 744 * 745 * When adding the packet-peek feature, don't forget adding a 746 * test on txb_count against QUEUEING_MAX. 747 * There is a little chance the packet count exceeds 748 * the limit. Assume transmission buffer is 8KB (2x8KB 749 * configuration) and an application sends a bunch of small 750 * (i.e., minimum packet sized) packets rapidly. An 8KB 751 * buffer can hold 130 blocks of 62 bytes long... 752 */ 753 if (sc->txb_free < 754 (ETHER_MAX_LEN - ETHER_CRC_LEN) + FE_TXLEN_SIZE) { 755 /* No room. */ 756 goto indicate_active; 757 } 758 759 #if FE_SINGLE_TRANSMISSION 760 if (sc->txb_count > 0) { 761 /* Just one packet per a transmission buffer. */ 762 goto indicate_active; 763 } 764 #endif 765 766 /* 767 * Get the next mbuf chain for a packet to send. 768 */ 769 IFQ_DEQUEUE(&ifp->if_snd, m); 770 if (m == 0) { 771 /* No more packets to send. */ 772 goto indicate_inactive; 773 } 774 775 #if NBPFILTER > 0 776 /* Tap off here if there is a BPF listener. */ 777 if (ifp->if_bpf) 778 bpf_mtap(ifp->if_bpf, m); 779 #endif 780 781 /* 782 * Copy the mbuf chain into the transmission buffer. 783 * txb_* variables are updated as necessary. 784 */ 785 mb86960_write_mbufs(sc, m); 786 787 m_freem(m); 788 789 /* Start transmitter if it's idle. */ 790 if (sc->txb_sched == 0) 791 mb86960_xmit(sc); 792 } 793 794 indicate_inactive: 795 /* 796 * We are using the !OACTIVE flag to indicate to 797 * the outside world that we can accept an 798 * additional packet rather than that the 799 * transmitter is _actually_ active. Indeed, the 800 * transmitter may be active, but if we haven't 801 * filled all the buffers with data then we still 802 * want to accept more. 803 */ 804 ifp->if_flags &= ~IFF_OACTIVE; 805 return; 806 807 indicate_active: 808 /* 809 * The transmitter is active, and there are no room for 810 * more outgoing packets in the transmission buffer. 811 */ 812 ifp->if_flags |= IFF_OACTIVE; 813 return; 814 } 815 816 /* 817 * Transmission interrupt handler 818 * The control flow of this function looks silly. FIXME. 819 */ 820 void 821 mb86960_tint(sc, tstat) 822 struct mb86960_softc *sc; 823 u_int8_t tstat; 824 { 825 bus_space_tag_t bst = sc->sc_bst; 826 bus_space_handle_t bsh = sc->sc_bsh; 827 struct ifnet *ifp = &sc->sc_ec.ec_if; 828 int left; 829 int col; 830 831 /* 832 * Handle "excessive collision" interrupt. 833 */ 834 if (tstat & FE_D0_COLL16) { 835 /* 836 * Find how many packets (including this collided one) 837 * are left unsent in transmission buffer. 838 */ 839 left = bus_space_read_1(bst, bsh, FE_BMPR10); 840 841 #if FE_DEBUG >= 2 842 log(LOG_WARNING, "%s: excessive collision (%d/%d)\n", 843 sc->sc_dev.dv_xname, left, sc->txb_sched); 844 #endif 845 #if FE_DEBUG >= 3 846 mb86960_dump(LOG_INFO, sc); 847 #endif 848 849 /* 850 * Update statistics. 851 */ 852 ifp->if_collisions += 16; 853 ifp->if_oerrors++; 854 ifp->if_opackets += sc->txb_sched - left; 855 856 /* 857 * Collision statistics has been updated. 858 * Clear the collision flag on 86960 now to avoid confusion. 859 */ 860 bus_space_write_1(bst, bsh, FE_DLCR0, FE_D0_COLLID); 861 862 /* 863 * Restart transmitter, skipping the 864 * collided packet. 865 * 866 * We *must* skip the packet to keep network running 867 * properly. Excessive collision error is an 868 * indication of the network overload. If we 869 * tried sending the same packet after excessive 870 * collision, the network would be filled with 871 * out-of-time packets. Packets belonging 872 * to reliable transport (such as TCP) are resent 873 * by some upper layer. 874 */ 875 bus_space_write_1(bst, bsh, FE_BMPR11, 876 FE_B11_CTRL_SKIP | FE_B11_MODE1); 877 sc->txb_sched = left - 1; 878 } 879 880 /* 881 * Handle "transmission complete" interrupt. 882 */ 883 if (tstat & FE_D0_TXDONE) { 884 /* 885 * Add in total number of collisions on last 886 * transmission. We also clear "collision occurred" flag 887 * here. 888 * 889 * 86960 has a design flow on collision count on multiple 890 * packet transmission. When we send two or more packets 891 * with one start command (that's what we do when the 892 * transmission queue is clauded), 86960 informs us number 893 * of collisions occurred on the last packet on the 894 * transmission only. Number of collisions on previous 895 * packets are lost. I have told that the fact is clearly 896 * stated in the Fujitsu document. 897 * 898 * I considered not to mind it seriously. Collision 899 * count is not so important, anyway. Any comments? FIXME. 900 */ 901 902 if (bus_space_read_1(bst, bsh, FE_DLCR0) & FE_D0_COLLID) { 903 /* Clear collision flag. */ 904 bus_space_write_1(bst, bsh, FE_DLCR0, FE_D0_COLLID); 905 906 /* Extract collision count from 86960. */ 907 col = bus_space_read_1(bst, bsh, FE_DLCR4) & FE_D4_COL; 908 if (col == 0) { 909 /* 910 * Status register indicates collisions, 911 * while the collision count is zero. 912 * This can happen after multiple packet 913 * transmission, indicating that one or more 914 * previous packet(s) had been collided. 915 * 916 * Since the accurate number of collisions 917 * has been lost, we just guess it as 1; 918 * Am I too optimistic? FIXME. 919 */ 920 col = 1; 921 } else 922 col >>= FE_D4_COL_SHIFT; 923 ifp->if_collisions += col; 924 #if FE_DEBUG >= 4 925 log(LOG_WARNING, "%s: %d collision%s (%d)\n", 926 sc->sc_dev.dv_xname, col, col == 1 ? "" : "s", 927 sc->txb_sched); 928 #endif 929 } 930 931 /* 932 * Update total number of successfully 933 * transmitted packets. 934 */ 935 ifp->if_opackets += sc->txb_sched; 936 sc->txb_sched = 0; 937 } 938 939 if (sc->txb_sched == 0) { 940 /* 941 * The transmitter is no more active. 942 * Reset output active flag and watchdog timer. 943 */ 944 ifp->if_flags &= ~IFF_OACTIVE; 945 ifp->if_timer = 0; 946 947 /* 948 * If more data is ready to transmit in the buffer, start 949 * transmitting them. Otherwise keep transmitter idle, 950 * even if more data is queued. This gives receive 951 * process a slight priority. 952 */ 953 if (sc->txb_count > 0) 954 mb86960_xmit(sc); 955 } 956 } 957 958 /* 959 * Ethernet interface receiver interrupt. 960 */ 961 void 962 mb86960_rint(sc, rstat) 963 struct mb86960_softc *sc; 964 u_int8_t rstat; 965 { 966 bus_space_tag_t bst = sc->sc_bst; 967 bus_space_handle_t bsh = sc->sc_bsh; 968 struct ifnet *ifp = &sc->sc_ec.ec_if; 969 u_int status, len; 970 int i; 971 972 /* 973 * Update statistics if this interrupt is caused by an error. 974 */ 975 if (rstat & (FE_D1_OVRFLO | FE_D1_CRCERR | FE_D1_ALGERR | 976 FE_D1_SRTPKT)) { 977 #if FE_DEBUG >= 3 978 char sbuf[sizeof(FE_D1_ERRBITS) + 64]; 979 980 bitmask_snprintf(rstat, FE_D1_ERRBITS, sbuf, sizeof(sbuf)); 981 log(LOG_WARNING, "%s: receive error: %s\n", 982 sc->sc_dev.dv_xname, sbuf); 983 #endif 984 ifp->if_ierrors++; 985 } 986 987 /* 988 * MB86960 has a flag indicating "receive queue empty." 989 * We just loop checking the flag to pull out all received 990 * packets. 991 * 992 * We limit the number of iterrations to avoid infinite loop. 993 * It can be caused by a very slow CPU (some broken 994 * peripheral may insert incredible number of wait cycles) 995 * or, worse, by a broken MB86960 chip. 996 */ 997 for (i = 0; i < FE_MAX_RECV_COUNT; i++) { 998 /* Stop the iterration if 86960 indicates no packets. */ 999 if (bus_space_read_1(bst, bsh, FE_DLCR5) & FE_D5_BUFEMP) 1000 break; 1001 1002 /* 1003 * Extract receive packet status from the receive 1004 * packet header. 1005 */ 1006 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 1007 status = bus_space_read_1(bst, bsh, FE_BMPR8); 1008 (void)bus_space_read_1(bst, bsh, FE_BMPR8); 1009 } else 1010 status = bus_space_read_2(bst, bsh, FE_BMPR8); 1011 1012 #if FE_DEBUG >= 4 1013 log(LOG_INFO, "%s: receive status = %02x\n", 1014 sc->sc_dev.dv_xname, status); 1015 #endif 1016 1017 /* 1018 * If there was an error, update statistics and drop 1019 * the packet, unless the interface is in promiscuous 1020 * mode. 1021 */ 1022 if ((status & FE_RXSTAT_GOODPKT) == 0) { 1023 if ((ifp->if_flags & IFF_PROMISC) == 0) { 1024 ifp->if_ierrors++; 1025 mb86960_droppacket(sc); 1026 continue; 1027 } 1028 } 1029 1030 /* 1031 * Extract the packet length from the receive packet header. 1032 * It is a sum of a header (14 bytes) and a payload. 1033 * CRC has been stripped off by the 86960. 1034 */ 1035 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 1036 len = bus_space_read_1(bst, bsh, FE_BMPR8); 1037 len |= bus_space_read_1(bst, bsh, FE_BMPR8) << 8; 1038 } else 1039 len = bus_space_read_2(bst, bsh, FE_BMPR8); 1040 1041 /* 1042 * MB86965 checks the packet length and drop big packet 1043 * before passing it to us. There are no chance we can 1044 * get [crufty] packets. Hence, if the length exceeds 1045 * the specified limit, it means some serious failure, 1046 * such as out-of-sync on receive buffer management. 1047 * 1048 * Is this statement true? FIXME. 1049 */ 1050 if (len > (ETHER_MAX_LEN - ETHER_CRC_LEN) || 1051 len < ETHER_HDR_LEN) { 1052 #if FE_DEBUG >= 2 1053 log(LOG_WARNING, 1054 "%s: received a %s packet? (%u bytes)\n", 1055 sc->sc_dev.dv_xname, 1056 len < ETHER_HDR_LEN ? "partial" : "big", len); 1057 #endif 1058 ifp->if_ierrors++; 1059 mb86960_droppacket(sc); 1060 continue; 1061 } 1062 1063 /* 1064 * Check for a short (RUNT) packet. We *do* check 1065 * but do nothing other than print a message. 1066 * Short packets are illegal, but does nothing bad 1067 * if it carries data for upper layer. 1068 */ 1069 #if FE_DEBUG >= 2 1070 if (len < (ETHER_MIN_LEN - ETHER_CRC_LEN)) { 1071 log(LOG_WARNING, 1072 "%s: received a short packet? (%u bytes)\n", 1073 sc->sc_dev.dv_xname, len); 1074 } 1075 #endif 1076 1077 /* 1078 * Go get a packet. 1079 */ 1080 if (mb86960_get_packet(sc, len) == 0) { 1081 /* Skip a packet, updating statistics. */ 1082 #if FE_DEBUG >= 2 1083 log(LOG_WARNING, 1084 "%s: out of mbufs; dropping packet (%u bytes)\n", 1085 sc->sc_dev.dv_xname, len); 1086 #endif 1087 ifp->if_ierrors++; 1088 mb86960_droppacket(sc); 1089 1090 /* 1091 * We stop receiving packets, even if there are 1092 * more in the buffer. We hope we can get more 1093 * mbufs next time. 1094 */ 1095 return; 1096 } 1097 1098 /* Successfully received a packet. Update stat. */ 1099 ifp->if_ipackets++; 1100 } 1101 } 1102 1103 /* 1104 * Ethernet interface interrupt processor 1105 */ 1106 int 1107 mb86960_intr(arg) 1108 void *arg; 1109 { 1110 struct mb86960_softc *sc = arg; 1111 bus_space_tag_t bst = sc->sc_bst; 1112 bus_space_handle_t bsh = sc->sc_bsh; 1113 struct ifnet *ifp = &sc->sc_ec.ec_if; 1114 u_int8_t tstat, rstat; 1115 1116 if ((sc->sc_stat & FE_STAT_ENABLED) == 0 || 1117 (sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1118 return (0); 1119 1120 #if FE_DEBUG >= 4 1121 log(LOG_INFO, "%s: mb86960_intr()\n", sc->sc_dev.dv_xname); 1122 mb86960_dump(LOG_INFO, sc); 1123 #endif 1124 1125 /* 1126 * Get interrupt conditions, masking unneeded flags. 1127 */ 1128 tstat = bus_space_read_1(bst, bsh, FE_DLCR0) & FE_TMASK; 1129 rstat = bus_space_read_1(bst, bsh, FE_DLCR1) & FE_RMASK; 1130 if (tstat == 0 && rstat == 0) 1131 return (0); 1132 1133 /* 1134 * Loop until there are no more new interrupt conditions. 1135 */ 1136 for (;;) { 1137 /* 1138 * Reset the conditions we are acknowledging. 1139 */ 1140 bus_space_write_1(bst, bsh, FE_DLCR0, tstat); 1141 bus_space_write_1(bst, bsh, FE_DLCR1, rstat); 1142 1143 /* 1144 * Handle transmitter interrupts. Handle these first because 1145 * the receiver will reset the board under some conditions. 1146 */ 1147 if (tstat != 0) 1148 mb86960_tint(sc, tstat); 1149 1150 /* 1151 * Handle receiver interrupts. 1152 */ 1153 if (rstat != 0) 1154 mb86960_rint(sc, rstat); 1155 1156 /* 1157 * Update the multicast address filter if it is 1158 * needed and possible. We do it now, because 1159 * we can make sure the transmission buffer is empty, 1160 * and there is a good chance that the receive queue 1161 * is empty. It will minimize the possibility of 1162 * packet lossage. 1163 */ 1164 if (sc->filter_change && 1165 sc->txb_count == 0 && sc->txb_sched == 0) { 1166 mb86960_loadmar(sc); 1167 ifp->if_flags &= ~IFF_OACTIVE; 1168 } 1169 1170 /* 1171 * If it looks like the transmitter can take more data, 1172 * attempt to start output on the interface. This is done 1173 * after handling the receiver interrupt to give the 1174 * receive operation priority. 1175 */ 1176 if ((ifp->if_flags & IFF_OACTIVE) == 0) 1177 mb86960_start(ifp); 1178 1179 #if NRND > 0 1180 if (rstat != 0 || tstat != 0) 1181 rnd_add_uint32(&sc->rnd_source, rstat + tstat); 1182 #endif 1183 1184 /* 1185 * Get interrupt conditions, masking unneeded flags. 1186 */ 1187 tstat = bus_space_read_1(bst, bsh, FE_DLCR0) & FE_TMASK; 1188 rstat = bus_space_read_1(bst, bsh, FE_DLCR1) & FE_RMASK; 1189 if (tstat == 0 && rstat == 0) 1190 return (1); 1191 } 1192 } 1193 1194 /* 1195 * Process an ioctl request. This code needs some work - it looks pretty ugly. 1196 */ 1197 int 1198 mb86960_ioctl(ifp, cmd, data) 1199 struct ifnet *ifp; 1200 u_long cmd; 1201 caddr_t data; 1202 { 1203 struct mb86960_softc *sc = ifp->if_softc; 1204 struct ifaddr *ifa = (struct ifaddr *)data; 1205 struct ifreq *ifr = (struct ifreq *)data; 1206 int s, error = 0; 1207 1208 #if FE_DEBUG >= 3 1209 log(LOG_INFO, "%s: ioctl(%lx)\n", sc->sc_dev.dv_xname, cmd); 1210 #endif 1211 1212 s = splnet(); 1213 1214 switch (cmd) { 1215 case SIOCSIFADDR: 1216 if ((error = mb86960_enable(sc)) != 0) 1217 break; 1218 ifp->if_flags |= IFF_UP; 1219 1220 switch (ifa->ifa_addr->sa_family) { 1221 #ifdef INET 1222 case AF_INET: 1223 mb86960_init(sc); 1224 arp_ifinit(ifp, ifa); 1225 break; 1226 #endif 1227 #ifdef NS 1228 case AF_NS: 1229 { 1230 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 1231 1232 if (ns_nullhost(*ina)) 1233 ina->x_host = 1234 *(union ns_host *)LLADDR(ifp->if_sadl); 1235 else { 1236 memcpy(LLADDR(ifp->if_sadl), 1237 ina->x_host.c_host, ETHER_ADDR_LEN); 1238 } 1239 /* Set new address. */ 1240 mb86960_init(sc); 1241 break; 1242 } 1243 #endif 1244 default: 1245 mb86960_init(sc); 1246 break; 1247 } 1248 break; 1249 1250 case SIOCSIFFLAGS: 1251 if ((ifp->if_flags & IFF_UP) == 0 && 1252 (ifp->if_flags & IFF_RUNNING) != 0) { 1253 /* 1254 * If interface is marked down and it is running, then 1255 * stop it. 1256 */ 1257 mb86960_stop(sc); 1258 ifp->if_flags &= ~IFF_RUNNING; 1259 mb86960_disable(sc); 1260 } else if ((ifp->if_flags & IFF_UP) != 0 && 1261 (ifp->if_flags & IFF_RUNNING) == 0) { 1262 /* 1263 * If interface is marked up and it is stopped, then 1264 * start it. 1265 */ 1266 if ((error = mb86960_enable(sc)) != 0) 1267 break; 1268 mb86960_init(sc); 1269 } else if ((ifp->if_flags & IFF_UP) != 0) { 1270 /* 1271 * Reset the interface to pick up changes in any other 1272 * flags that affect hardware registers. 1273 */ 1274 mb86960_setmode(sc); 1275 } 1276 #if FE_DEBUG >= 1 1277 /* "ifconfig fe0 debug" to print register dump. */ 1278 if (ifp->if_flags & IFF_DEBUG) { 1279 log(LOG_INFO, "%s: SIOCSIFFLAGS(DEBUG)\n", 1280 sc->sc_dev.dv_xname); 1281 mb86960_dump(LOG_DEBUG, sc); 1282 } 1283 #endif 1284 break; 1285 1286 case SIOCADDMULTI: 1287 case SIOCDELMULTI: 1288 if ((sc->sc_stat & FE_STAT_ENABLED) == 0) { 1289 error = EIO; 1290 break; 1291 } 1292 1293 /* Update our multicast list. */ 1294 error = (cmd == SIOCADDMULTI) ? 1295 ether_addmulti(ifr, &sc->sc_ec) : 1296 ether_delmulti(ifr, &sc->sc_ec); 1297 1298 if (error == ENETRESET) { 1299 /* 1300 * Multicast list has changed; set the hardware filter 1301 * accordingly. 1302 */ 1303 if (ifp->if_flags & IFF_RUNNING) 1304 mb86960_setmode(sc); 1305 error = 0; 1306 } 1307 break; 1308 1309 case SIOCGIFMEDIA: 1310 case SIOCSIFMEDIA: 1311 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 1312 break; 1313 1314 default: 1315 error = EINVAL; 1316 break; 1317 } 1318 1319 splx(s); 1320 return (error); 1321 } 1322 1323 /* 1324 * Retrieve packet from receive buffer and send to the next level up via 1325 * ether_input(). If there is a BPF listener, give a copy to BPF, too. 1326 * Returns 0 if success, -1 if error (i.e., mbuf allocation failure). 1327 */ 1328 int 1329 mb86960_get_packet(sc, len) 1330 struct mb86960_softc *sc; 1331 u_int len; 1332 { 1333 bus_space_tag_t bst = sc->sc_bst; 1334 bus_space_handle_t bsh = sc->sc_bsh; 1335 struct ifnet *ifp = &sc->sc_ec.ec_if; 1336 struct mbuf *m; 1337 1338 /* Allocate a header mbuf. */ 1339 MGETHDR(m, M_DONTWAIT, MT_DATA); 1340 if (m == 0) 1341 return (0); 1342 m->m_pkthdr.rcvif = ifp; 1343 m->m_pkthdr.len = len; 1344 1345 /* The following silliness is to make NFS happy. */ 1346 #define EROUND ((sizeof(struct ether_header) + 3) & ~3) 1347 #define EOFF (EROUND - sizeof(struct ether_header)) 1348 1349 /* 1350 * Our strategy has one more problem. There is a policy on 1351 * mbuf cluster allocation. It says that we must have at 1352 * least MINCLSIZE (208 bytes) to allocate a cluster. For a 1353 * packet of a size between (MHLEN - 2) to (MINCLSIZE - 2), 1354 * our code violates the rule... 1355 * On the other hand, the current code is short, simple, 1356 * and fast, however. It does no harmful thing, just waists 1357 * some memory. Any comments? FIXME. 1358 */ 1359 1360 /* Attach a cluster if this packet doesn't fit in a normal mbuf. */ 1361 if (len > MHLEN - EOFF) { 1362 MCLGET(m, M_DONTWAIT); 1363 if ((m->m_flags & M_EXT) == 0) { 1364 m_freem(m); 1365 return (0); 1366 } 1367 } 1368 1369 /* 1370 * The following assumes there is room for the ether header in the 1371 * header mbuf. 1372 */ 1373 m->m_data += EOFF; 1374 1375 /* Set the length of this packet. */ 1376 m->m_len = len; 1377 1378 /* Get a packet. */ 1379 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) 1380 bus_space_read_multi_1(bst, bsh, FE_BMPR8, 1381 mtod(m, u_int8_t *), len); 1382 else 1383 bus_space_read_multi_stream_2(bst, bsh, FE_BMPR8, 1384 mtod(m, u_int16_t *), (len + 1) >> 1); 1385 1386 #if NBPFILTER > 0 1387 /* 1388 * Check if there's a BPF listener on this interface. If so, hand off 1389 * the raw packet to bpf. 1390 */ 1391 if (ifp->if_bpf) 1392 bpf_mtap(ifp->if_bpf, m); 1393 #endif 1394 1395 (*ifp->if_input)(ifp, m); 1396 return (1); 1397 } 1398 1399 /* 1400 * Write an mbuf chain to the transmission buffer memory using 16 bit PIO. 1401 * Returns number of bytes actually written, including length word. 1402 * 1403 * If an mbuf chain is too long for an Ethernet frame, it is not sent. 1404 * Packets shorter than Ethernet minimum are legal, and we pad them 1405 * before sending out. An exception is "partial" packets which are 1406 * shorter than mandatory Ethernet header. 1407 * 1408 * I wrote a code for an experimental "delayed padding" technique. 1409 * When employed, it postpones the padding process for short packets. 1410 * If xmit() occurred at the moment, the padding process is omitted, and 1411 * garbages are sent as pad data. If next packet is stored in the 1412 * transmission buffer before xmit(), write_mbuf() pads the previous 1413 * packet before transmitting new packet. This *may* gain the 1414 * system performance (slightly). 1415 */ 1416 void 1417 mb86960_write_mbufs(sc, m) 1418 struct mb86960_softc *sc; 1419 struct mbuf *m; 1420 { 1421 bus_space_tag_t bst = sc->sc_bst; 1422 bus_space_handle_t bsh = sc->sc_bsh; 1423 int totlen, len; 1424 #if FE_DEBUG >= 2 1425 struct mbuf *mp; 1426 #endif 1427 1428 #if FE_DELAYED_PADDING 1429 /* Do the "delayed padding." */ 1430 if (sc->txb_padding > 0) { 1431 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 1432 for (len = sc->txb_padding; len > 0; len--) 1433 bus_space_write_1(bst, bsh, FE_BMPR8, 0); 1434 } else { 1435 for (len = sc->txb_padding >> 1; len > 0; len--) 1436 bus_space_write_2(bst, bsh, FE_BMPR8, 0); 1437 } 1438 sc->txb_padding = 0; 1439 } 1440 #endif 1441 1442 /* We need to use m->m_pkthdr.len, so require the header */ 1443 if ((m->m_flags & M_PKTHDR) == 0) 1444 panic("mb86960_write_mbufs: no header mbuf"); 1445 1446 #if FE_DEBUG >= 2 1447 /* First, count up the total number of bytes to copy. */ 1448 for (totlen = 0, mp = m; mp != 0; mp = mp->m_next) 1449 totlen += mp->m_len; 1450 /* Check if this matches the one in the packet header. */ 1451 if (totlen != m->m_pkthdr.len) 1452 log(LOG_WARNING, "%s: packet length mismatch? (%d/%d)\n", 1453 sc->sc_dev.dv_xname, totlen, m->m_pkthdr.len); 1454 #else 1455 /* Just use the length value in the packet header. */ 1456 totlen = m->m_pkthdr.len; 1457 #endif 1458 1459 #if FE_DEBUG >= 1 1460 /* 1461 * Should never send big packets. If such a packet is passed, 1462 * it should be a bug of upper layer. We just ignore it. 1463 * ... Partial (too short) packets, neither. 1464 */ 1465 if (totlen > (ETHER_MAX_LEN - ETHER_CRC_LEN) || 1466 totlen < ETHER_HDR_LEN) { 1467 log(LOG_ERR, "%s: got a %s packet (%u bytes) to send\n", 1468 sc->sc_dev.dv_xname, 1469 totlen < ETHER_HDR_LEN ? "partial" : "big", totlen); 1470 sc->sc_ec.ec_if.if_oerrors++; 1471 return; 1472 } 1473 #endif 1474 1475 /* 1476 * Put the length word for this frame. 1477 * Does 86960 accept odd length? -- Yes. 1478 * Do we need to pad the length to minimum size by ourselves? 1479 * -- Generally yes. But for (or will be) the last 1480 * packet in the transmission buffer, we can skip the 1481 * padding process. It may gain performance slightly. FIXME. 1482 */ 1483 len = max(totlen, (ETHER_MIN_LEN - ETHER_CRC_LEN)); 1484 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 1485 bus_space_write_1(bst, bsh, FE_BMPR8, len); 1486 bus_space_write_1(bst, bsh, FE_BMPR8, len >> 8); 1487 } else { 1488 bus_space_write_2(bst, bsh, FE_BMPR8, len); 1489 /* roundup packet length since we will use word access */ 1490 totlen = (totlen + 1) & ~1; 1491 } 1492 1493 /* 1494 * Update buffer status now. 1495 * Truncate the length up to an even number 1496 * if the chip is set in SBW_WORD mode. 1497 */ 1498 sc->txb_free -= FE_TXLEN_SIZE + 1499 max(totlen, (ETHER_MIN_LEN - ETHER_CRC_LEN)); 1500 sc->txb_count++; 1501 1502 #if FE_DELAYED_PADDING 1503 /* Postpone the packet padding if necessary. */ 1504 if (totlen < (ETHER_MIN_LEN - ETHER_CRC_LEN)) 1505 sc->txb_padding = (ETHER_MIN_LEN - ETHER_CRC_LEN) - totlen; 1506 #endif 1507 1508 /* 1509 * Transfer the data from mbuf chain to the transmission buffer. 1510 * If the MB86960 is configured in word mode, data needs to be 1511 * transferred as words, and only words. 1512 * So that we require some extra code to patch over odd-length 1513 * or unaligned mbufs. 1514 */ 1515 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 1516 /* It's simple in byte mode. */ 1517 for (; m != NULL; m = m->m_next) { 1518 if (m->m_len) { 1519 bus_space_write_multi_1(bst, bsh, FE_BMPR8, 1520 mtod(m, u_int8_t *), m->m_len); 1521 } 1522 } 1523 } else { 1524 /* a bit trickier in word mode. */ 1525 u_int8_t *data, savebyte[2]; 1526 int leftover; 1527 1528 leftover = 0; 1529 savebyte[0] = savebyte[1] = 0; 1530 1531 for (; m != NULL; m = m->m_next) { 1532 len = m->m_len; 1533 if (len == 0) 1534 continue; 1535 data = mtod(m, u_int8_t *); 1536 while (len > 0) { 1537 if (leftover) { 1538 /* 1539 * Data left over (from mbuf or 1540 * realignment). Buffer the next 1541 * byte, and write it and the 1542 * leftover data out. 1543 */ 1544 savebyte[1] = *data++; 1545 len--; 1546 bus_space_write_stream_2(bst, bsh, 1547 FE_BMPR8, *(u_int16_t *)savebyte); 1548 leftover = 0; 1549 } else if (BUS_SPACE_ALIGNED_POINTER(data, 1550 u_int16_t) == 0) { 1551 /* 1552 * Unaligned data; buffer the next byte. 1553 */ 1554 savebyte[0] = *data++; 1555 len--; 1556 leftover = 1; 1557 } else { 1558 /* 1559 * Aligned data; output contiguous 1560 * words as much as we can, then 1561 * buffer the remaining byte, if any. 1562 */ 1563 leftover = len & 1; 1564 len &= ~1; 1565 bus_space_write_multi_stream_2(bst, bsh, 1566 FE_BMPR8, (u_int16_t *)data, 1567 len >> 1); 1568 data += len; 1569 if (leftover) 1570 savebyte[0] = *data++; 1571 len = 0; 1572 } 1573 } 1574 if (len < 0) 1575 panic("mb86960_write_mbufs: negative len"); 1576 } 1577 if (leftover) { 1578 savebyte[1] = 0; 1579 bus_space_write_stream_2(bst, bsh, FE_BMPR8, 1580 *(u_int16_t *)savebyte); 1581 } 1582 } 1583 #if FE_DELAYED_PADDING == 0 1584 /* 1585 * Pad the packet to the minimum length if necessary. 1586 */ 1587 len = (ETHER_MIN_LEN - ETHER_CRC_LEN) - totlen; 1588 if (len > 0) { 1589 if (sc->sc_flags & FE_FLAGS_SBW_BYTE) { 1590 while (len-- > 0) 1591 bus_space_write_1(bst, bsh, FE_BMPR8, 0); 1592 } else { 1593 len >>= 1; 1594 while (len-- > 0) 1595 bus_space_write_2(bst, bsh, FE_BMPR8, 0); 1596 } 1597 } 1598 #endif 1599 } 1600 1601 /* 1602 * Compute the multicast address filter from the 1603 * list of multicast addresses we need to listen to. 1604 */ 1605 void 1606 mb86960_getmcaf(ec, af) 1607 struct ethercom *ec; 1608 u_int8_t *af; 1609 { 1610 struct ifnet *ifp = &ec->ec_if; 1611 struct ether_multi *enm; 1612 u_int32_t crc; 1613 struct ether_multistep step; 1614 1615 /* 1616 * Set up multicast address filter by passing all multicast addresses 1617 * through a crc generator, and then using the high order 6 bits as an 1618 * index into the 64 bit logical address filter. The high order bit 1619 * selects the word, while the rest of the bits select the bit within 1620 * the word. 1621 */ 1622 1623 if ((ifp->if_flags & IFF_PROMISC) != 0) 1624 goto allmulti; 1625 1626 memset(af, 0, FE_FILTER_LEN); 1627 ETHER_FIRST_MULTI(step, ec, enm); 1628 while (enm != NULL) { 1629 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 1630 sizeof(enm->enm_addrlo)) != 0) { 1631 /* 1632 * We must listen to a range of multicast addresses. 1633 * For now, just accept all multicasts, rather than 1634 * trying to set only those filter bits needed to match 1635 * the range. (At this time, the only use of address 1636 * ranges is for IP multicast routing, for which the 1637 * range is big enough to require all bits set.) 1638 */ 1639 goto allmulti; 1640 } 1641 1642 crc = ether_crc32_le(enm->enm_addrlo, ETHER_ADDR_LEN); 1643 1644 /* Just want the 6 most significant bits. */ 1645 crc >>= 26; 1646 1647 /* Turn on the corresponding bit in the filter. */ 1648 af[crc >> 3] |= 1 << (crc & 7); 1649 1650 ETHER_NEXT_MULTI(step, enm); 1651 } 1652 ifp->if_flags &= ~IFF_ALLMULTI; 1653 return; 1654 1655 allmulti: 1656 ifp->if_flags |= IFF_ALLMULTI; 1657 memset(af, 0xff, FE_FILTER_LEN); 1658 } 1659 1660 /* 1661 * Calculate a new "multicast packet filter" and put the 86960 1662 * receiver in appropriate mode. 1663 */ 1664 void 1665 mb86960_setmode(sc) 1666 struct mb86960_softc *sc; 1667 { 1668 bus_space_tag_t bst = sc->sc_bst; 1669 bus_space_handle_t bsh = sc->sc_bsh; 1670 int flags = sc->sc_ec.ec_if.if_flags; 1671 1672 /* 1673 * If the interface is not running, we postpone the update 1674 * process for receive modes and multicast address filter 1675 * until the interface is restarted. It reduces some 1676 * complicated job on maintaining chip states. (Earlier versions 1677 * of this driver had a bug on that point...) 1678 * 1679 * To complete the trick, mb86960_init() calls mb86960_setmode() after 1680 * restarting the interface. 1681 */ 1682 if ((flags & IFF_RUNNING) == 0) 1683 return; 1684 1685 /* 1686 * Promiscuous mode is handled separately. 1687 */ 1688 if ((flags & IFF_PROMISC) != 0) { 1689 /* 1690 * Program 86960 to receive all packets on the segment 1691 * including those directed to other stations. 1692 * Multicast filter stored in MARs are ignored 1693 * under this setting, so we don't need to update it. 1694 * 1695 * Promiscuous mode is used solely by BPF, and BPF only 1696 * listens to valid (no error) packets. So, we ignore 1697 * errornous ones even in this mode. 1698 */ 1699 bus_space_write_1(bst, bsh, FE_DLCR5, 1700 sc->proto_dlcr5 | FE_D5_AFM0 | FE_D5_AFM1); 1701 sc->filter_change = 0; 1702 1703 #if FE_DEBUG >= 3 1704 log(LOG_INFO, "%s: promiscuous mode\n", sc->sc_dev.dv_xname); 1705 #endif 1706 return; 1707 } 1708 1709 /* 1710 * Turn the chip to the normal (non-promiscuous) mode. 1711 */ 1712 bus_space_write_1(bst, bsh, FE_DLCR5, sc->proto_dlcr5 | FE_D5_AFM1); 1713 1714 /* 1715 * Find the new multicast filter value. 1716 */ 1717 mb86960_getmcaf(&sc->sc_ec, sc->filter); 1718 sc->filter_change = 1; 1719 1720 #if FE_DEBUG >= 3 1721 log(LOG_INFO, 1722 "%s: address filter: [%02x %02x %02x %02x %02x %02x %02x %02x]\n", 1723 sc->sc_dev.dv_xname, 1724 sc->filter[0], sc->filter[1], sc->filter[2], sc->filter[3], 1725 sc->filter[4], sc->filter[5], sc->filter[6], sc->filter[7]); 1726 #endif 1727 1728 /* 1729 * We have to update the multicast filter in the 86960, A.S.A.P. 1730 * 1731 * Note that the DLC (Data Linc Control unit, i.e. transmitter 1732 * and receiver) must be stopped when feeding the filter, and 1733 * DLC trashes all packets in both transmission and receive 1734 * buffers when stopped. 1735 * 1736 * ... Are the above sentenses correct? I have to check the 1737 * manual of the MB86960A. FIXME. 1738 * 1739 * To reduce the packet lossage, we delay the filter update 1740 * process until buffers are empty. 1741 */ 1742 if (sc->txb_sched == 0 && sc->txb_count == 0 && 1743 (bus_space_read_1(bst, bsh, FE_DLCR1) & FE_D1_PKTRDY) == 0) { 1744 /* 1745 * Buffers are (apparently) empty. Load 1746 * the new filter value into MARs now. 1747 */ 1748 mb86960_loadmar(sc); 1749 } else { 1750 /* 1751 * Buffers are not empty. Mark that we have to update 1752 * the MARs. The new filter will be loaded by mb86960_intr() 1753 * later. 1754 */ 1755 #if FE_DEBUG >= 4 1756 log(LOG_INFO, "%s: filter change delayed\n", 1757 sc->sc_dev.dv_xname); 1758 #endif 1759 } 1760 } 1761 1762 /* 1763 * Load a new multicast address filter into MARs. 1764 * 1765 * The caller must have splnet'ed befor mb86960_loadmar. 1766 * This function starts the DLC upon return. So it can be called only 1767 * when the chip is working, i.e., from the driver's point of view, when 1768 * a device is RUNNING. (I mistook the point in previous versions.) 1769 */ 1770 void 1771 mb86960_loadmar(sc) 1772 struct mb86960_softc *sc; 1773 { 1774 bus_space_tag_t bst = sc->sc_bst; 1775 bus_space_handle_t bsh = sc->sc_bsh; 1776 1777 /* Stop the DLC (transmitter and receiver). */ 1778 bus_space_write_1(bst, bsh, FE_DLCR6, 1779 sc->proto_dlcr6 | FE_D6_DLC_DISABLE); 1780 1781 /* Select register bank 1 for MARs. */ 1782 bus_space_write_1(bst, bsh, FE_DLCR7, 1783 sc->proto_dlcr7 | FE_D7_RBS_MAR | FE_D7_POWER_UP); 1784 1785 /* Copy filter value into the registers. */ 1786 bus_space_write_region_1(bst, bsh, FE_MAR8, sc->filter, FE_FILTER_LEN); 1787 1788 /* Restore the bank selection for BMPRs (i.e., runtime registers). */ 1789 bus_space_write_1(bst, bsh, FE_DLCR7, 1790 sc->proto_dlcr7 | FE_D7_RBS_BMPR | FE_D7_POWER_UP); 1791 1792 /* Restart the DLC. */ 1793 bus_space_write_1(bst, bsh, FE_DLCR6, 1794 sc->proto_dlcr6 | FE_D6_DLC_ENABLE); 1795 1796 /* We have just updated the filter. */ 1797 sc->filter_change = 0; 1798 1799 #if FE_DEBUG >= 3 1800 log(LOG_INFO, "%s: address filter changed\n", sc->sc_dev.dv_xname); 1801 #endif 1802 } 1803 1804 /* 1805 * Enable power on the interface. 1806 */ 1807 int 1808 mb86960_enable(sc) 1809 struct mb86960_softc *sc; 1810 { 1811 1812 #if FE_DEBUG >= 3 1813 log(LOG_INFO, "%s: mb86960_enable()\n", sc->sc_dev.dv_xname); 1814 #endif 1815 1816 if ((sc->sc_stat & FE_STAT_ENABLED) == 0 && sc->sc_enable != NULL) { 1817 if ((*sc->sc_enable)(sc) != 0) { 1818 printf("%s: device enable failed\n", 1819 sc->sc_dev.dv_xname); 1820 return (EIO); 1821 } 1822 } 1823 1824 sc->sc_stat |= FE_STAT_ENABLED; 1825 return (0); 1826 } 1827 1828 /* 1829 * Disable power on the interface. 1830 */ 1831 void 1832 mb86960_disable(sc) 1833 struct mb86960_softc *sc; 1834 { 1835 1836 #if FE_DEBUG >= 3 1837 log(LOG_INFO, "%s: mb86960_disable()\n", sc->sc_dev.dv_xname); 1838 #endif 1839 1840 if ((sc->sc_stat & FE_STAT_ENABLED) != 0 && sc->sc_disable != NULL) { 1841 (*sc->sc_disable)(sc); 1842 sc->sc_stat &= ~FE_STAT_ENABLED; 1843 } 1844 } 1845 1846 /* 1847 * mbe_activate: 1848 * 1849 * Handle device activation/deactivation requests. 1850 */ 1851 int 1852 mb86960_activate(self, act) 1853 struct device *self; 1854 enum devact act; 1855 { 1856 struct mb86960_softc *sc = (struct mb86960_softc *)self; 1857 int rv, s; 1858 1859 rv = 0; 1860 s = splnet(); 1861 switch (act) { 1862 case DVACT_ACTIVATE: 1863 rv = EOPNOTSUPP; 1864 break; 1865 1866 case DVACT_DEACTIVATE: 1867 if_deactivate(&sc->sc_ec.ec_if); 1868 break; 1869 } 1870 splx(s); 1871 return (rv); 1872 } 1873 1874 /* 1875 * mb86960_detach: 1876 * 1877 * Detach a MB86960 interface. 1878 */ 1879 int 1880 mb86960_detach(sc) 1881 struct mb86960_softc *sc; 1882 { 1883 struct ifnet *ifp = &sc->sc_ec.ec_if; 1884 1885 /* Succeed now if there's no work to do. */ 1886 if ((sc->sc_stat & FE_STAT_ATTACHED) == 0) 1887 return (0); 1888 1889 /* Delete all media. */ 1890 ifmedia_delete_instance(&sc->sc_media, IFM_INST_ANY); 1891 1892 #if NRND > 0 1893 /* Unhook the entropy source. */ 1894 rnd_detach_source(&sc->rnd_source); 1895 #endif 1896 ether_ifdetach(ifp); 1897 if_detach(ifp); 1898 1899 mb86960_disable(sc); 1900 return (0); 1901 } 1902 1903 /* 1904 * Routines to read all bytes from the config EEPROM (93C06) through MB86965A. 1905 */ 1906 void 1907 mb86965_read_eeprom(iot, ioh, data) 1908 bus_space_tag_t iot; 1909 bus_space_handle_t ioh; 1910 u_int8_t *data; 1911 { 1912 int addr, op, bit; 1913 u_int16_t val; 1914 1915 /* Read bytes from EEPROM; two bytes per an iteration. */ 1916 for (addr = 0; addr < FE_EEPROM_SIZE / 2; addr++) { 1917 /* Reset the EEPROM interface. */ 1918 bus_space_write_1(iot, ioh, FE_BMPR16, 0x00); 1919 bus_space_write_1(iot, ioh, FE_BMPR17, 0x00); 1920 bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT); 1921 1922 /* Send start bit. */ 1923 bus_space_write_1(iot, ioh, FE_BMPR17, FE_B17_DATA); 1924 FE_EEPROM_DELAY(); 1925 bus_space_write_1(iot, ioh, 1926 FE_BMPR16, FE_B16_SELECT | FE_B16_CLOCK); 1927 FE_EEPROM_DELAY(); 1928 bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT); 1929 1930 /* Send read command and read address. */ 1931 op = 0x80 | addr; /* READ instruction */ 1932 for (bit = 8; bit > 0; bit--) { 1933 bus_space_write_1(iot, ioh, FE_BMPR17, 1934 (op & (1 << (bit - 1))) ? FE_B17_DATA : 0); 1935 FE_EEPROM_DELAY(); 1936 bus_space_write_1(iot, ioh, 1937 FE_BMPR16, FE_B16_SELECT | FE_B16_CLOCK); 1938 FE_EEPROM_DELAY(); 1939 bus_space_write_1(iot, ioh, FE_BMPR16, FE_B16_SELECT); 1940 } 1941 bus_space_write_1(iot, ioh, FE_BMPR17, 0x00); 1942 1943 /* Read two bytes in each address */ 1944 val = 0; 1945 for (bit = 16; bit > 0; bit--) { 1946 FE_EEPROM_DELAY(); 1947 bus_space_write_1(iot, ioh, 1948 FE_BMPR16, FE_B16_SELECT | FE_B16_CLOCK); 1949 FE_EEPROM_DELAY(); 1950 if (bus_space_read_1(iot, ioh, FE_BMPR17) & 1951 FE_B17_DATA) 1952 val |= 1 << (bit - 1); 1953 bus_space_write_1(iot, ioh, 1954 FE_BMPR16, FE_B16_SELECT); 1955 } 1956 data[addr * 2] = val >> 8; 1957 data[addr * 2 + 1] = val & 0xff; 1958 } 1959 1960 /* Make sure the EEPROM is turned off. */ 1961 bus_space_write_1(iot, ioh, FE_BMPR16, 0); 1962 bus_space_write_1(iot, ioh, FE_BMPR17, 0); 1963 1964 #if FE_DEBUG >= 3 1965 /* Report what we got. */ 1966 log(LOG_INFO, "mb86965_read_eeprom: " 1967 " %02x%02x%02x%02x %02x%02x%02x%02x -" 1968 " %02x%02x%02x%02x %02x%02x%02x%02x -" 1969 " %02x%02x%02x%02x %02x%02x%02x%02x -" 1970 " %02x%02x%02x%02x %02x%02x%02x%02x\n", 1971 data[ 0], data[ 1], data[ 2], data[ 3], 1972 data[ 4], data[ 5], data[ 6], data[ 7], 1973 data[ 8], data[ 9], data[10], data[11], 1974 data[12], data[13], data[14], data[15], 1975 data[16], data[17], data[18], data[19], 1976 data[20], data[21], data[22], data[23], 1977 data[24], data[25], data[26], data[27], 1978 data[28], data[29], data[30], data[31]); 1979 #endif 1980 } 1981 1982 #if FE_DEBUG >= 1 1983 void 1984 mb86960_dump(level, sc) 1985 int level; 1986 struct mb86960_softc *sc; 1987 { 1988 bus_space_tag_t bst = sc->sc_bst; 1989 bus_space_handle_t bsh = sc->sc_bsh; 1990 u_int8_t save_dlcr7; 1991 1992 save_dlcr7 = bus_space_read_1(bst, bsh, FE_DLCR7); 1993 1994 log(level, "\tDLCR = %02x %02x %02x %02x %02x %02x %02x %02x\n", 1995 bus_space_read_1(bst, bsh, FE_DLCR0), 1996 bus_space_read_1(bst, bsh, FE_DLCR1), 1997 bus_space_read_1(bst, bsh, FE_DLCR2), 1998 bus_space_read_1(bst, bsh, FE_DLCR3), 1999 bus_space_read_1(bst, bsh, FE_DLCR4), 2000 bus_space_read_1(bst, bsh, FE_DLCR5), 2001 bus_space_read_1(bst, bsh, FE_DLCR6), 2002 bus_space_read_1(bst, bsh, FE_DLCR7)); 2003 2004 bus_space_write_1(bst, bsh, FE_DLCR7, 2005 (save_dlcr7 & ~FE_D7_RBS) | FE_D7_RBS_DLCR); 2006 log(level, "\t %02x %02x %02x %02x %02x %02x %02x %02x\n", 2007 bus_space_read_1(bst, bsh, FE_DLCR8), 2008 bus_space_read_1(bst, bsh, FE_DLCR9), 2009 bus_space_read_1(bst, bsh, FE_DLCR10), 2010 bus_space_read_1(bst, bsh, FE_DLCR11), 2011 bus_space_read_1(bst, bsh, FE_DLCR12), 2012 bus_space_read_1(bst, bsh, FE_DLCR13), 2013 bus_space_read_1(bst, bsh, FE_DLCR14), 2014 bus_space_read_1(bst, bsh, FE_DLCR15)); 2015 2016 bus_space_write_1(bst, bsh, FE_DLCR7, 2017 (save_dlcr7 & ~FE_D7_RBS) | FE_D7_RBS_MAR); 2018 log(level, "\tMAR = %02x %02x %02x %02x %02x %02x %02x %02x\n", 2019 bus_space_read_1(bst, bsh, FE_MAR8), 2020 bus_space_read_1(bst, bsh, FE_MAR9), 2021 bus_space_read_1(bst, bsh, FE_MAR10), 2022 bus_space_read_1(bst, bsh, FE_MAR11), 2023 bus_space_read_1(bst, bsh, FE_MAR12), 2024 bus_space_read_1(bst, bsh, FE_MAR13), 2025 bus_space_read_1(bst, bsh, FE_MAR14), 2026 bus_space_read_1(bst, bsh, FE_MAR15)); 2027 2028 bus_space_write_1(bst, bsh, FE_DLCR7, 2029 (save_dlcr7 & ~FE_D7_RBS) | FE_D7_RBS_BMPR); 2030 log(level, 2031 "\tBMPR = xx xx %02x %02x %02x %02x %02x %02x %02x %02x xx %02x\n", 2032 bus_space_read_1(bst, bsh, FE_BMPR10), 2033 bus_space_read_1(bst, bsh, FE_BMPR11), 2034 bus_space_read_1(bst, bsh, FE_BMPR12), 2035 bus_space_read_1(bst, bsh, FE_BMPR13), 2036 bus_space_read_1(bst, bsh, FE_BMPR14), 2037 bus_space_read_1(bst, bsh, FE_BMPR15), 2038 bus_space_read_1(bst, bsh, FE_BMPR16), 2039 bus_space_read_1(bst, bsh, FE_BMPR17), 2040 bus_space_read_1(bst, bsh, FE_BMPR19)); 2041 2042 bus_space_write_1(bst, bsh, FE_DLCR7, save_dlcr7); 2043 } 2044 #endif 2045 2046
Indexes created Mon Oct 27 02:09:54 GMT 2025