1/* 2 * All Rights Reserved, Copyright (C) Fujitsu Limited 1995 3 * 4 * This software may be used, modified, copied, distributed, and sold, in 5 * both source and binary form provided that the above copyright, these 6 * terms and the following disclaimer are retained. The name of the author 7 * and/or the contributor may not be used to endorse or promote products 8 * derived from this software without specific prior written permission. 9 * 10 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND THE CONTRIBUTOR ``AS IS'' AND 11 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 12 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 13 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE CONTRIBUTOR BE LIABLE 14 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 15 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 16 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION. 17 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 18 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 19 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 20 * SUCH DAMAGE. 21 */ 22 23#define FE_VERSION "if_fe.c ver. 0.8a" 24 25/* 26 * Device driver for Fujitsu MB86960A/MB86965A based Ethernet cards. 27 * To be used with FreeBSD 2.0 RELEASE. 28 * Contributed by M.S. <seki@sysrap.cs.fujitsu.co.jp> 29 * 30 * This version is intended to be a generic template for various 31 * MB86960A/MB86965A based Ethernet cards. It currently supports 32 * Fujitsu FMV-180 series (i.e., FMV-181 and FMV-182) and Allied- 33 * Telesis AT1700 series and RE2000 series. There are some 34 * unnecessary hooks embedded, which are primarily intended to support 35 * other types of Ethernet cards, but the author is not sure whether 36 * they are useful. 37 * 38 * This software is a derivative work of if_ed.c version 1.56 by David 39 * Greenman available as a part of FreeBSD 2.0 RELEASE source distribution. 40 * 41 * The following lines are retained from the original if_ed.c: 42 * 43 * Copyright (C) 1993, David Greenman. This software may be used, modified, 44 * copied, distributed, and sold, in both source and binary form provided 45 * that the above copyright and these terms are retained. Under no 46 * circumstances is the author responsible for the proper functioning 47 * of this software, nor does the author assume any responsibility 48 * for damages incurred with its use. 49 */ 50 51#include "fe.h" 52#include "bpfilter.h" 53 54#include <sys/param.h> 55#include <sys/systm.h> 56#include <sys/conf.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/devconf.h> 63 64#include <net/if.h> 65#include <net/if_dl.h> 66#include <net/if_types.h> 67 68#ifdef INET 69#include <netinet/in.h> 70#include <netinet/in_systm.h> 71#include <netinet/in_var.h> 72#include <netinet/ip.h> 73#include <netinet/if_ether.h> 74#endif 75 76#ifdef IPX 77#include <netipx/ipx.h> 78#include <netipx/ipx_if.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/clock.h> 92 93#include <i386/isa/isa.h> 94#include <i386/isa/isa_device.h> 95#include <i386/isa/icu.h> 96 97#include <i386/isa/ic/mb86960.h> 98#include <i386/isa/if_fereg.h> 99 100#ifdef __GNUC__ 101#define INLINE inline 102#else 103#define INLINE 104#endif 105 106/* 107 * Default settings for fe driver specific options. 108 * They can be set in config file by "options" statements. 109 */ 110 111/* 112 * Debug control. 113 * 0: No debug at all. All debug specific codes are stripped off. 114 * 1: Silent. No debug messages are logged except emergent ones. 115 * 2: Brief. Lair events and/or important information are logged. 116 * 3: Detailed. Logs all information which *may* be useful for debugging. 117 * 4: Trace. All actions in the driver is logged. Super verbose. 118 */ 119#ifndef FE_DEBUG 120#define FE_DEBUG 1 121#endif 122 123/* 124 * Delay padding of short transmission packets to minimum Ethernet size. 125 * This may or may not gain performance. An EXPERIMENTAL option. 126 */ 127#ifndef FE_DELAYED_PADDING 128#define FE_DELAYED_PADDING 0 129#endif 130 131/* 132 * Transmit just one packet per a "send"command to 86960. 133 * This option is intended for performance test. An EXPERIMENTAL option. 134 */ 135#ifndef FE_SINGLE_TRANSMISSION 136#define FE_SINGLE_TRANSMISSION 0 137#endif 138 139/* 140 * Device configuration flags. 141 */ 142 143/* DLCR6 settings. */ 144#define FE_FLAGS_DLCR6_VALUE 0x007F 145 146/* Force DLCR6 override. */ 147#define FE_FLAGS_OVERRIDE_DLCR6 0x0080 148 149/* A cludge for PCMCIA support. */ 150#define FE_FLAGS_PCMCIA 0x8000 151 152/* Shouldn't this be defined somewhere else such as isa_device.h? */ 153#define NO_IOADDR 0xFFFFFFFF 154 155/* Identification of the driver version. */ 156static char const fe_version [] = FE_VERSION " / " FE_REG_VERSION; 157 158/* 159 * Supported hardware (Ethernet card) types 160 * This information is currently used only for debugging 161 */ 162enum fe_type 163{ 164 /* For cards which are successfully probed but not identified. */ 165 FE_TYPE_UNKNOWN, 166 167 /* Fujitsu FMV-180 series. */ 168 FE_TYPE_FMV181, 169 FE_TYPE_FMV182, 170 171 /* Allied-Telesis AT1700 series and RE2000 series. */ 172 FE_TYPE_AT1700, 173 174 /* PCMCIA by Fujitsu. */ 175 FE_TYPE_MBH10302, 176 FE_TYPE_MBH10304, 177 178 /* More can be here. */ 179}; 180 181/* 182 * Data type for a multicast address filter on 86960. 183 */ 184struct fe_filter { u_char data [ FE_FILTER_LEN ]; }; 185 186/* 187 * Special filter values. 188 */ 189static struct fe_filter const fe_filter_nothing = { FE_FILTER_NOTHING }; 190static struct fe_filter const fe_filter_all = { FE_FILTER_ALL }; 191 192/* 193 * fe_softc: per line info and status 194 */ 195static struct fe_softc { 196 197 /* Used by "common" codes. */ 198 struct arpcom arpcom; /* ethernet common */ 199 200 /* Used by config codes. */ 201 struct kern_devconf kdc;/* Kernel configuration database info. */ 202 203 /* Set by probe() and not modified in later phases. */ 204 enum fe_type type; /* interface type code */ 205 char * typestr; /* printable name of the interface. */ 206 u_short addr; /* MB86960A I/O base address */ 207 u_short txb_size; /* size of TX buffer, in bytes */ 208 u_char proto_dlcr4; /* DLCR4 prototype. */ 209 u_char proto_dlcr5; /* DLCR5 prototype. */ 210 u_char proto_dlcr6; /* DLCR6 prototype. */ 211 u_char proto_dlcr7; /* DLCR7 prototype. */ 212 213 /* Vendor specific hooks. */ 214 void ( * init )( struct fe_softc * ); /* Just before fe_init(). */ 215 void ( * stop )( struct fe_softc * ); /* Just after fe_stop(). */ 216
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217 /* For BPF. */
218 caddr_t bpf; /* BPF "magic cookie" */
219
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217 /* Transmission buffer management. */ 218 u_short txb_free; /* free bytes in TX buffer */ 219 u_char txb_count; /* number of packets in TX buffer */ 220 u_char txb_sched; /* number of scheduled packets */ 221 u_char txb_padding; /* number of delayed padding bytes */ 222 223 /* Multicast address filter management. */ 224 u_char filter_change; /* MARs must be changed ASAP. */ 225 struct fe_filter filter;/* new filter value. */ 226 227} fe_softc[NFE]; 228 229/* Frequently accessed members in arpcom and kdc. */ 230#define sc_if arpcom.ac_if 231#define sc_unit arpcom.ac_if.if_unit 232#define sc_enaddr arpcom.ac_enaddr 233#define sc_dcstate kdc.kdc_state 234#define sc_description kdc.kdc_description 235
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239/*
240 * Some entry functions receive a "struct ifnet *" typed pointer as an
241 * argument. It points to arpcom.ac_if of our softc. Remember arpcom.ac_if
242 * is located at very first of the fe_softc struct. So, there is no
243 * difference between "struct fe_softc *" and "struct ifnet *" at the machine
244 * language level. We just cast to turn a "struct ifnet *" value into "struct
245 * fe_softc * value". If this were C++, we would need no such cast at all.
246 */
247#define IFNET2SOFTC(P) ( ( struct fe_softc * )(P) )
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236#define IFNET2SOFTC(P) (P)->if_softc |
237 238/* Standard driver entry points. These can be static. */ 239static int fe_probe ( struct isa_device * ); 240static int fe_attach ( struct isa_device * ); 241static void fe_init ( int ); 242static int fe_ioctl ( struct ifnet *, int, caddr_t ); 243static void fe_start ( struct ifnet * ); 244static void fe_reset ( int ); 245static void fe_watchdog ( struct ifnet * ); 246 247/* Local functions. Order of declaration is confused. FIXME. */ 248static int fe_probe_fmv ( struct isa_device *, struct fe_softc * ); 249static int fe_probe_ati ( struct isa_device *, struct fe_softc * ); 250static int fe_probe_mbh ( struct isa_device *, struct fe_softc * ); 251static void fe_init_mbh ( struct fe_softc * ); 252static int fe_get_packet ( struct fe_softc *, u_short ); 253static void fe_stop ( int ); 254static void fe_tint ( struct fe_softc *, u_char ); 255static void fe_rint ( struct fe_softc *, u_char ); 256static void fe_xmit ( struct fe_softc * ); 257static void fe_write_mbufs ( struct fe_softc *, struct mbuf * ); 258static struct fe_filter 259 fe_mcaf ( struct fe_softc * ); 260static int fe_hash ( u_char * ); 261static void fe_setmode ( struct fe_softc * ); 262static void fe_loadmar ( struct fe_softc * );
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274static void fe_setlinkaddr ( struct fe_softc * );
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263#if FE_DEBUG >= 1 264static void fe_dump ( int, struct fe_softc *, char * ); 265#endif 266 267/* Ethernet constants. To be defined in if_ehter.h? FIXME. */ 268#define ETHER_MIN_LEN 60 /* with header, without CRC. */ 269#define ETHER_MAX_LEN 1514 /* with header, without CRC. */ 270#define ETHER_ADDR_LEN 6 /* number of bytes in an address. */ 271#define ETHER_TYPE_LEN 2 /* number of bytes in a data type field. */ 272#define ETHER_HDR_SIZE 14 /* src addr, dst addr, and data type. */ 273#define ETHER_CRC_LEN 4 /* number of bytes in CRC field. */ 274 275/* Driver struct used in the config code. This must be public (external.) */ 276struct isa_driver fedriver = 277{ 278 fe_probe, 279 fe_attach, 280 "fe", 281 0 /* Assume we are insensitive. FIXME. */ 282}; 283 284/* Initial value for a kdc struct. */ 285static struct kern_devconf const fe_kdc_template = 286{ 287 0, 0, 0, 288 "fe", 0, { MDDT_ISA, 0, "net" }, 289 isa_generic_externalize, 0, 0, ISA_EXTERNALLEN, 290 &kdc_isa0, /* We are an ISA device. */ 291 0, 292 DC_UNCONFIGURED, /* Not yet configured. */ 293 "Ethernet (fe)", /* Tentative description (filled in later.) */ 294 DC_CLS_NETIF /* We are a network interface. */ 295}; 296 297/* 298 * Fe driver specific constants which relate to 86960/86965. 299 * They are here (not in if_fereg.h), since selection of those 300 * values depend on driver design. I want to keep definitions in 301 * if_fereg.h "clean", so that if someone wrote another driver 302 * for 86960/86965, if_fereg.h were usable unchanged. 303 * 304 * The above statement sounds somothing like it's better to name 305 * it "ic/mb86960.h" but "if_fereg.h"... Should I do so? FIXME. 306 */ 307 308/* Interrupt masks */ 309#define FE_TMASK ( FE_D2_COLL16 | FE_D2_TXDONE ) 310#define FE_RMASK ( FE_D3_OVRFLO | FE_D3_CRCERR \ 311 | FE_D3_ALGERR | FE_D3_SRTPKT | FE_D3_PKTRDY ) 312 313/* Maximum number of iterrations for a receive interrupt. */ 314#define FE_MAX_RECV_COUNT ( ( 65536 - 2048 * 2 ) / 64 ) 315 /* Maximum size of SRAM is 65536, 316 * minimum size of transmission buffer in fe is 2x2KB, 317 * and minimum amount of received packet including headers 318 * added by the chip is 64 bytes. 319 * Hence FE_MAX_RECV_COUNT is the upper limit for number 320 * of packets in the receive buffer. */ 321 322/* 323 * Convenient routines to access contiguous I/O ports. 324 */ 325 326static INLINE void 327inblk ( u_short addr, u_char * mem, int len ) 328{ 329 while ( --len >= 0 ) { 330 *mem++ = inb( addr++ ); 331 } 332} 333 334static INLINE void 335outblk ( u_short addr, u_char const * mem, int len ) 336{ 337 while ( --len >= 0 ) { 338 outb( addr++, *mem++ ); 339 } 340} 341 342/* 343 * Hardware probe routines. 344 */ 345 346/* How and where to probe; to support automatic I/O address detection. */ 347struct fe_probe_list 348{ 349 int ( * probe ) ( struct isa_device *, struct fe_softc * ); 350 u_short const * addresses; 351}; 352 353/* Lists of possible addresses. */ 354static u_short const fe_fmv_addr [] = 355 { 0x220, 0x240, 0x260, 0x280, 0x2A0, 0x2C0, 0x300, 0x340, 0 }; 356static u_short const fe_ati_addr [] = 357 { 0x240, 0x260, 0x280, 0x2A0, 0x300, 0x320, 0x340, 0x380, 0 }; 358 359static struct fe_probe_list const fe_probe_list [] = 360{ 361 { fe_probe_fmv, fe_fmv_addr }, 362 { fe_probe_ati, fe_ati_addr }, 363 { fe_probe_mbh, NULL }, /* PCMCIAs cannot be auto-detected. */ 364 { NULL, NULL } 365}; 366 367/* 368 * Determine if the device is present 369 * 370 * on entry: 371 * a pointer to an isa_device struct 372 * on exit: 373 * zero if device not found 374 * or number of i/o addresses used (if found) 375 */ 376 377static int 378fe_probe ( struct isa_device * isa_dev ) 379{ 380 struct fe_softc * sc, * u; 381 int nports; 382 struct fe_probe_list const * list; 383 u_short const * addr; 384 u_short single [ 2 ]; 385 386 /* Initialize "minimum" parts of our softc. */ 387 sc = &fe_softc[ isa_dev->id_unit ]; 388 sc->sc_unit = isa_dev->id_unit; 389 390#if FE_DEBUG >= 2 391 log( LOG_INFO, "fe%d: %s\n", sc->sc_unit, fe_version ); 392#endif 393 394#ifndef DEV_LKM 395 /* Fill the device config data and register it. */ 396 sc->kdc = fe_kdc_template; 397 sc->kdc.kdc_unit = sc->sc_unit; 398 sc->kdc.kdc_parentdata = isa_dev; 399 dev_attach( &sc->kdc ); 400#endif 401 402 /* Probe each possibility, one at a time. */ 403 for ( list = fe_probe_list; list->probe != NULL; list++ ) { 404 405 if ( isa_dev->id_iobase != NO_IOADDR ) { 406 /* Probe one specific address. */ 407 single[ 0 ] = isa_dev->id_iobase; 408 single[ 1 ] = 0; 409 addr = single; 410 } else if ( list->addresses != NULL ) { 411 /* Auto detect. */ 412 addr = list->addresses; 413 } else { 414 /* We need a list of addresses to do auto detect. */ 415 continue; 416 } 417 418 /* Probe all possible addresses for the board. */ 419 while ( *addr != 0 ) { 420 421 /* Don't probe already used address. */ 422 for ( u = &fe_softc[0]; u < &fe_softc[NFE]; u++ ) { 423 if ( u->addr == *addr ) break; 424 } 425 if ( u < &fe_softc[NFE] ) continue; 426 427 /* Probe an address. */ 428 sc->addr = *addr; 429 nports = list->probe( isa_dev, sc ); 430 if ( nports > 0 ) { 431 /* Found. */ 432 isa_dev->id_iobase = *addr; 433 return ( nports ); 434 } 435 436 /* Try next. */ 437 sc->addr = 0; 438 addr++; 439 } 440 } 441 442 /* Probe failed. */ 443 return ( 0 ); 444} 445 446/* 447 * Check for specific bits in specific registers have specific values. 448 */ 449struct fe_simple_probe_struct 450{ 451 u_char port; /* Offset from the base I/O address. */ 452 u_char mask; /* Bits to be checked. */ 453 u_char bits; /* Values to be compared against. */ 454}; 455 456static INLINE int 457fe_simple_probe ( u_short addr, struct fe_simple_probe_struct const * sp ) 458{ 459 struct fe_simple_probe_struct const * p; 460 461 for ( p = sp; p->mask != 0; p++ ) { 462 if ( ( inb( addr + p->port ) & p->mask ) != p->bits ) { 463 return ( 0 ); 464 } 465 } 466 return ( 1 ); 467} 468 469/* 470 * Routines to read all bytes from the config EEPROM through MB86965A. 471 * I'm not sure what exactly I'm doing here... I was told just to follow 472 * the steps, and it worked. Could someone tell me why the following 473 * code works? (Or, why all similar codes I tried previously doesn't 474 * work.) FIXME. 475 */ 476 477static INLINE void 478strobe ( u_short bmpr16 ) 479{ 480 /* 481 * Output same value twice. To speed-down execution? 482 */ 483 outb( bmpr16, FE_B16_SELECT ); 484 outb( bmpr16, FE_B16_SELECT ); 485 outb( bmpr16, FE_B16_SELECT | FE_B16_CLOCK ); 486 outb( bmpr16, FE_B16_SELECT | FE_B16_CLOCK ); 487 outb( bmpr16, FE_B16_SELECT ); 488 outb( bmpr16, FE_B16_SELECT ); 489} 490 491static void 492fe_read_eeprom ( struct fe_softc * sc, u_char * data ) 493{ 494 u_short bmpr16 = sc->addr + FE_BMPR16; 495 u_short bmpr17 = sc->addr + FE_BMPR17; 496 u_char n, val, bit; 497 u_char save16, save17; 498 499 /* Save old values of the registers. */ 500 save16 = inb( bmpr16 ); 501 save17 = inb( bmpr17 ); 502 503 /* Read bytes from EEPROM; two bytes per an iterration. */ 504 for ( n = 0; n < FE_EEPROM_SIZE / 2; n++ ) { 505 506 /* Reset the EEPROM interface. */ 507 outb( bmpr16, 0x00 ); 508 outb( bmpr17, 0x00 ); 509 outb( bmpr16, FE_B16_SELECT ); 510 511 /* Start EEPROM access. */ 512 outb( bmpr17, FE_B17_DATA ); 513 strobe( bmpr16 ); 514 515 /* Pass the iterration count to the chip. */ 516 val = 0x80 | n; 517 for ( bit = 0x80; bit != 0x00; bit >>= 1 ) { 518 outb( bmpr17, ( val & bit ) ? FE_B17_DATA : 0 ); 519 strobe( bmpr16 ); 520 } 521 outb( bmpr17, 0x00 ); 522 523 /* Read a byte. */ 524 val = 0; 525 for ( bit = 0x80; bit != 0x00; bit >>= 1 ) { 526 strobe( bmpr16 ); 527 if ( inb( bmpr17 ) & FE_B17_DATA ) { 528 val |= bit; 529 } 530 } 531 *data++ = val; 532 533 /* Read one more byte. */ 534 val = 0; 535 for ( bit = 0x80; bit != 0x00; bit >>= 1 ) { 536 strobe( bmpr16 ); 537 if ( inb( bmpr17 ) & FE_B17_DATA ) { 538 val |= bit; 539 } 540 } 541 *data++ = val; 542 } 543 544 /* Restore register values, in the case we had no 86965. */ 545 outb( bmpr16, save16 ); 546 outb( bmpr17, save17 ); 547 548#if FE_DEBUG >= 3 549 /* Report what we got. */ 550 data -= FE_EEPROM_SIZE; 551 log( LOG_INFO, "fe%d: EEPROM:" 552 " %02x%02x%02x%02x %02x%02x%02x%02x -" 553 " %02x%02x%02x%02x %02x%02x%02x%02x -" 554 " %02x%02x%02x%02x %02x%02x%02x%02x -" 555 " %02x%02x%02x%02x %02x%02x%02x%02x\n", 556 sc->sc_unit, 557 data[ 0], data[ 1], data[ 2], data[ 3], 558 data[ 4], data[ 5], data[ 6], data[ 7], 559 data[ 8], data[ 9], data[10], data[11], 560 data[12], data[13], data[14], data[15], 561 data[16], data[17], data[18], data[19], 562 data[20], data[21], data[22], data[23], 563 data[24], data[25], data[26], data[27], 564 data[28], data[29], data[30], data[31] ); 565#endif 566} 567 568/* 569 * Hardware (vendor) specific probe routines. 570 */ 571 572/* 573 * Probe and initialization for Fujitsu FMV-180 series boards 574 */ 575static int 576fe_probe_fmv ( struct isa_device *isa_dev, struct fe_softc * sc ) 577{ 578 int i, n; 579 580 static u_short const ioaddr [ 8 ] = 581 { 0x220, 0x240, 0x260, 0x280, 0x2A0, 0x2C0, 0x300, 0x340 }; 582 static u_short const irqmap [ 4 ] = 583 { IRQ3, IRQ7, IRQ10, IRQ15 }; 584 585 static struct fe_simple_probe_struct const probe_table [] = { 586 { FE_DLCR2, 0x70, 0x00 }, 587 { FE_DLCR4, 0x08, 0x00 }, 588 /* { FE_DLCR5, 0x80, 0x00 }, Doesn't work. */ 589 590 { FE_FMV0, FE_FMV0_MAGIC_MASK, FE_FMV0_MAGIC_VALUE }, 591 { FE_FMV1, FE_FMV1_CARDID_MASK, FE_FMV1_CARDID_ID }, 592 { FE_FMV3, FE_FMV3_EXTRA_MASK, FE_FMV3_EXTRA_VALUE }, 593#if 1 594 /* 595 * Test *vendor* part of the station address for Fujitsu. 596 * The test will gain reliability of probe process, but 597 * it rejects FMV-180 clone boards manufactured by other vendors. 598 * We have to turn the test off when such cards are made available. 599 */ 600 { FE_FMV4, 0xFF, 0x00 }, 601 { FE_FMV5, 0xFF, 0x00 }, 602 { FE_FMV6, 0xFF, 0x0E }, 603#else 604 /* 605 * We can always verify the *first* 2 bits (in Ehternet 606 * bit order) are "no multicast" and "no local" even for 607 * unknown vendors. 608 */ 609 { FE_FMV4, 0x03, 0x00 }, 610#endif 611 { 0 } 612 }; 613 614#if 0 615 /* 616 * Dont probe at all if the config says we are PCMCIA... 617 */ 618 if ( isa_dev->id_flags & FE_FLAGS_PCMCIA ) return ( 0 ); 619#endif 620 621 /* 622 * See if the sepcified address is possible for FMV-180 series. 623 */ 624 for ( i = 0; i < 8; i++ ) { 625 if ( ioaddr[ i ] == sc->addr ) break; 626 } 627 if ( i == 8 ) return 0; 628 629 /* Simple probe. */ 630 if ( !fe_simple_probe( sc->addr, probe_table ) ) return 0; 631 632 /* Check if our I/O address matches config info on EEPROM. */ 633 n = ( inb( sc->addr + FE_FMV2 ) & FE_FMV2_ADDR ) >> FE_FMV2_ADDR_SHIFT; 634 if ( ioaddr[ n ] != sc->addr ) return 0; 635 636 /* Determine the card type. */ 637 switch ( inb( sc->addr + FE_FMV0 ) & FE_FMV0_MODEL ) { 638 case FE_FMV0_MODEL_FMV181: 639 sc->type = FE_TYPE_FMV181; 640 sc->typestr = "FMV-181"; 641 sc->sc_description = "Ethernet adapter: FMV-181"; 642 break; 643 case FE_FMV0_MODEL_FMV182: 644 sc->type = FE_TYPE_FMV182; 645 sc->typestr = "FMV-182"; 646 sc->sc_description = "Ethernet adapter: FMV-182"; 647 break; 648 default: 649 /* Unknown card type: maybe a new model, but... */ 650 return 0; 651 } 652 653 /* 654 * An FMV-180 has successfully been proved. 655 * Determine which IRQ to be used. 656 * 657 * In this version, we always get an IRQ assignment from the 658 * FMV-180's configuration EEPROM, ignoring that specified in 659 * config file. 660 */ 661 n = ( inb( sc->addr + FE_FMV2 ) & FE_FMV2_IRQ ) >> FE_FMV2_IRQ_SHIFT; 662 isa_dev->id_irq = irqmap[ n ]; 663 664 /* 665 * Initialize constants in the per-line structure. 666 */ 667 668 /* Get our station address from EEPROM. */ 669 inblk( sc->addr + FE_FMV4, sc->sc_enaddr, ETHER_ADDR_LEN ); 670 671 /* Make sure we got a valid station address. */ 672 if ( ( sc->sc_enaddr[ 0 ] & 0x03 ) != 0x00 673 || ( sc->sc_enaddr[ 0 ] == 0x00 674 && sc->sc_enaddr[ 1 ] == 0x00 675 && sc->sc_enaddr[ 2 ] == 0x00 ) ) return 0; 676 677 /* Register values which depend on board design. */ 678 sc->proto_dlcr4 = FE_D4_LBC_DISABLE | FE_D4_CNTRL; 679 sc->proto_dlcr5 = 0; 680 sc->proto_dlcr7 = FE_D7_BYTSWP_LH | FE_D7_IDENT_EC; 681 682 /* 683 * Program the 86960 as follows: 684 * SRAM: 32KB, 100ns, byte-wide access. 685 * Transmission buffer: 4KB x 2. 686 * System bus interface: 16 bits. 687 * We cannot change these values but TXBSIZE, because they 688 * are hard-wired on the board. Modifying TXBSIZE will affect 689 * the driver performance. 690 */ 691 sc->proto_dlcr6 = FE_D6_BUFSIZ_32KB | FE_D6_TXBSIZ_2x4KB 692 | FE_D6_BBW_BYTE | FE_D6_SBW_WORD | FE_D6_SRAM_100ns; 693 694 /* 695 * Minimum initialization of the hardware. 696 * We write into registers; hope I/O ports have no 697 * overlap with other boards. 698 */ 699 700 /* Initialize ASIC. */ 701 outb( sc->addr + FE_FMV3, 0 ); 702 outb( sc->addr + FE_FMV10, 0 ); 703 704 /* Wait for a while. I'm not sure this is necessary. FIXME. */ 705 DELAY(200); 706 707 /* Initialize 86960. */ 708 outb( sc->addr + FE_DLCR6, sc->proto_dlcr6 | FE_D6_DLC_DISABLE ); 709 DELAY(200); 710 711 /* Disable all interrupts. */ 712 outb( sc->addr + FE_DLCR2, 0 ); 713 outb( sc->addr + FE_DLCR3, 0 ); 714 715 /* Turn the "master interrupt control" flag of ASIC on. */ 716 outb( sc->addr + FE_FMV3, FE_FMV3_ENABLE_FLAG ); 717 718 /* 719 * That's all. FMV-180 occupies 32 I/O addresses, by the way. 720 */ 721 return 32; 722} 723 724/* 725 * Probe and initialization for Allied-Telesis AT1700/RE2000 series. 726 */ 727static int 728fe_probe_ati ( struct isa_device * isa_dev, struct fe_softc * sc ) 729{ 730 int i, n; 731 u_char eeprom [ FE_EEPROM_SIZE ]; 732 733 static u_short const ioaddr [ 8 ] = 734 { 0x260, 0x280, 0x2A0, 0x240, 0x340, 0x320, 0x380, 0x300 }; 735 static u_short const irqmap_lo [ 4 ] = 736 { IRQ3, IRQ4, IRQ5, IRQ9 }; 737 static u_short const irqmap_hi [ 4 ] = 738 { IRQ10, IRQ11, IRQ12, IRQ15 }; 739 static struct fe_simple_probe_struct const probe_table [] = { 740 { FE_DLCR2, 0x70, 0x00 }, 741 { FE_DLCR4, 0x08, 0x00 }, 742 { FE_DLCR5, 0x80, 0x00 }, 743#if 0 744 { FE_BMPR16, 0x1B, 0x00 }, 745 { FE_BMPR17, 0x7F, 0x00 }, 746#endif 747 { 0 } 748 }; 749 750#if 0 751 /* 752 * Don't probe at all if the config says we are PCMCIA... 753 */ 754 if ( isa_dev->id_flags & FE_FLAGS_PCMCIA ) return ( 0 ); 755#endif 756 757#if FE_DEBUG >= 3 758 log( LOG_INFO, "fe%d: probe (0x%x) for ATI\n", sc->sc_unit, sc->addr ); 759 fe_dump( LOG_INFO, sc, NULL ); 760#endif 761 762 /* 763 * See if the sepcified address is possible for MB86965A JLI mode. 764 */ 765 for ( i = 0; i < 8; i++ ) { 766 if ( ioaddr[ i ] == sc->addr ) break; 767 } 768 if ( i == 8 ) return 0; 769 770 /* 771 * We should test if MB86965A is on the base address now. 772 * Unfortunately, it is very hard to probe it reliably, since 773 * we have no way to reset the chip under software control. 774 * On cold boot, we could check the "signature" bit patterns 775 * described in the Fujitsu document. On warm boot, however, 776 * we can predict almost nothing about register values. 777 */ 778 if ( !fe_simple_probe( sc->addr, probe_table ) ) return 0; 779 780 /* Check if our I/O address matches config info on 86965. */ 781 n = ( inb( sc->addr + FE_BMPR19 ) & FE_B19_ADDR ) >> FE_B19_ADDR_SHIFT; 782 if ( ioaddr[ n ] != sc->addr ) return 0; 783 784 /* 785 * We are now almost sure we have an AT1700 at the given 786 * address. So, read EEPROM through 86965. We have to write 787 * into LSI registers to read from EEPROM. I want to avoid it 788 * at this stage, but I cannot test the presense of the chip 789 * any further without reading EEPROM. FIXME. 790 */ 791 fe_read_eeprom( sc, eeprom ); 792 793 /* Make sure that config info in EEPROM and 86965 agree. */ 794 if ( eeprom[ FE_EEPROM_CONF ] != inb( sc->addr + FE_BMPR19 ) ) { 795 return 0; 796 } 797 798 /* 799 * Determine the card type. 800 * There may be a way to identify various models. FIXME. 801 */ 802 sc->type = FE_TYPE_AT1700; 803 sc->typestr = "AT1700/RE2000"; 804 sc->sc_description = "Ethernet adapter: AT1700 or RE2000"; 805 806 /* 807 * I was told that RE2000 series has two variants on IRQ 808 * selection. They are 3/4/5/9 and 10/11/12/15. I don't know 809 * how we can distinguish which model is which. For now, we 810 * just trust irq setting in config. FIXME. 811 * 812 * I've heard that ATI puts an identification between these 813 * two models in the EEPROM. Sounds reasonable. I've also 814 * heard that Linux driver for AT1700 tests it. O.K. Let's 815 * try using it and see what happens. Anyway, we will use an 816 * IRQ value passed by config (i.e., user), if one is 817 * available. FIXME. 818 */ 819 n = ( inb( sc->addr + FE_BMPR19 ) & FE_B19_IRQ ) >> FE_B19_IRQ_SHIFT; 820 if ( isa_dev->id_irq == 0 ) { 821 /* Try to determine IRQ settings. */ 822 if ( eeprom[ FE_EEP_ATI_TYPE ] & FE_EEP_ATI_TYPE_HIGHIRQ ) { 823 isa_dev->id_irq = irqmap_hi[ n ]; 824 } else { 825 isa_dev->id_irq = irqmap_lo[ n ]; 826 } 827 } 828 829 /* 830 * Initialize constants in the per-line structure. 831 */ 832 833 /* Get our station address from EEPROM. */ 834 bcopy( eeprom + FE_EEP_ATI_ADDR, sc->sc_enaddr, ETHER_ADDR_LEN ); 835 836#if 1 837 /* 838 * This test doesn't work well for AT1700 look-alike by 839 * other vendors. 840 */ 841 /* Make sure the vendor part is for Allied-Telesis. */ 842 if ( sc->sc_enaddr[ 0 ] != 0x00 843 || sc->sc_enaddr[ 1 ] != 0x00 844 || sc->sc_enaddr[ 2 ] != 0xF4 ) return 0; 845 846#else 847 /* Make sure we got a valid station address. */ 848 if ( ( sc->sc_enaddr[ 0 ] & 0x03 ) != 0x00 849 || ( sc->sc_enaddr[ 0 ] == 0x00 850 && sc->sc_enaddr[ 1 ] == 0x00 851 && sc->sc_enaddr[ 2 ] == 0x00 ) ) return 0; 852#endif 853 854 /* Should find all register prototypes here. FIXME. */ 855 sc->proto_dlcr4 = FE_D4_LBC_DISABLE | FE_D4_CNTRL; /* FIXME */ 856 sc->proto_dlcr5 = 0; 857 sc->proto_dlcr7 = FE_D7_BYTSWP_LH | FE_D7_IDENT_EC; 858 859 /* 860 * Program the 86960 as follows: 861 * SRAM: 32KB, 100ns, byte-wide access. 862 * Transmission buffer: 4KB x 2. 863 * System bus interface: 16 bits. 864 * We cannot change these values but TXBSIZE, because they 865 * are hard-wired on the board. Modifying TXBSIZE will affect 866 * the driver performance. 867 */ 868 sc->proto_dlcr6 = FE_D6_BUFSIZ_32KB | FE_D6_TXBSIZ_2x4KB 869 | FE_D6_BBW_BYTE | FE_D6_SBW_WORD | FE_D6_SRAM_100ns; 870 871#if FE_DEBUG >= 3 872 fe_dump( LOG_INFO, sc, "ATI found" ); 873#endif 874 875 /* Initialize 86965. */ 876 outb( sc->addr + FE_DLCR6, sc->proto_dlcr6 | FE_D6_DLC_DISABLE ); 877 DELAY(200); 878 879 /* Disable all interrupts. */ 880 outb( sc->addr + FE_DLCR2, 0 ); 881 outb( sc->addr + FE_DLCR3, 0 ); 882 883#if FE_DEBUG >= 3 884 fe_dump( LOG_INFO, sc, "end of fe_probe_ati()" ); 885#endif 886 887 /* 888 * That's all. AT1700 occupies 32 I/O addresses, by the way. 889 */ 890 return 32; 891} 892 893/* 894 * Probe and initialization for Fujitsu MBH10302 PCMCIA Ethernet interface. 895 */ 896static int 897fe_probe_mbh ( struct isa_device * isa_dev, struct fe_softc * sc ) 898{ 899 static struct fe_simple_probe_struct probe_table [] = { 900 { FE_DLCR2, 0x70, 0x00 }, 901 { FE_DLCR4, 0x08, 0x00 }, 902 /* { FE_DLCR5, 0x80, 0x00 }, Does not work well. */ 903#if 0 904 /* 905 * Test *vendor* part of the address for Fujitsu. 906 * The test will gain reliability of probe process, but 907 * it rejects clones by other vendors, or OEM product 908 * supplied by resalers other than Fujitsu. 909 */ 910 { FE_MBH10, 0xFF, 0x00 }, 911 { FE_MBH11, 0xFF, 0x00 }, 912 { FE_MBH12, 0xFF, 0x0E }, 913#else 914 /* 915 * We can always verify the *first* 2 bits (in Ehternet 916 * bit order) are "global" and "unicast" even for 917 * unknown vendors. 918 */ 919 { FE_MBH10, 0x03, 0x00 }, 920#endif 921 /* Just a gap? Seems reliable, anyway. */ 922 { 0x12, 0xFF, 0x00 }, 923 { 0x13, 0xFF, 0x00 }, 924 { 0x14, 0xFF, 0x00 }, 925 { 0x15, 0xFF, 0x00 }, 926 { 0x16, 0xFF, 0x00 }, 927 { 0x17, 0xFF, 0x00 }, 928 { 0x18, 0xFF, 0xFF }, 929 { 0x19, 0xFF, 0xFF }, 930 931 { 0 } 932 }; 933 934#if 0 935 /* 936 * We need a PCMCIA flag. 937 */ 938 if ( ( isa_dev->id_flags & FE_FLAGS_PCMCIA ) == 0 ) return ( 0 ); 939#endif 940 941 /* 942 * We need explicit IRQ and supported address. 943 */ 944 if ( isa_dev->id_irq == 0 || ( sc->addr & ~0x3E0 ) != 0 ) return ( 0 ); 945 946#if FE_DEBUG >= 3 947 fe_dump( LOG_INFO, sc, "top of probe" ); 948#endif 949 950 /* 951 * See if MBH10302 is on its address. 952 * I'm not sure the following probe code works. FIXME. 953 */ 954 if ( !fe_simple_probe( sc->addr, probe_table ) ) return 0; 955 956 /* Determine the card type. */ 957 sc->type = FE_TYPE_MBH10302; 958 sc->typestr = "MBH10302 (PCMCIA)"; 959 sc->sc_description = "Ethernet adapter: MBH10302 (PCMCIA)"; 960 961 /* 962 * Initialize constants in the per-line structure. 963 */ 964 965 /* Get our station address from EEPROM. */ 966 inblk( sc->addr + FE_MBH10, sc->sc_enaddr, ETHER_ADDR_LEN ); 967 968 /* Make sure we got a valid station address. */ 969 if ( ( sc->sc_enaddr[ 0 ] & 0x03 ) != 0x00 970 || ( sc->sc_enaddr[ 0 ] == 0x00 971 && sc->sc_enaddr[ 1 ] == 0x00 972 && sc->sc_enaddr[ 2 ] == 0x00 ) ) return 0; 973 974 /* Should find all register prototypes here. FIXME. */ 975 sc->proto_dlcr4 = FE_D4_LBC_DISABLE | FE_D4_CNTRL; 976 sc->proto_dlcr5 = 0; 977 sc->proto_dlcr7 = FE_D7_BYTSWP_LH | FE_D7_IDENT_NICE; 978 979 /* 980 * Program the 86960 as follows: 981 * SRAM: 32KB, 100ns, byte-wide access. 982 * Transmission buffer: 4KB x 2. 983 * System bus interface: 16 bits. 984 * We cannot change these values but TXBSIZE, because they 985 * are hard-wired on the board. Modifying TXBSIZE will affect 986 * the driver performance. 987 */ 988 sc->proto_dlcr6 = FE_D6_BUFSIZ_32KB | FE_D6_TXBSIZ_2x4KB 989 | FE_D6_BBW_BYTE | FE_D6_SBW_WORD | FE_D6_SRAM_100ns; 990 991 /* Setup hooks. We need a special initialization procedure. */ 992 sc->init = fe_init_mbh; 993 994 /* 995 * Minimum initialization. 996 */ 997 998 /* Wait for a while. I'm not sure this is necessary. FIXME. */ 999 DELAY(200); 1000 1001 /* Minimul initialization of 86960. */ 1002 outb( sc->addr + FE_DLCR6, sc->proto_dlcr6 | FE_D6_DLC_DISABLE ); 1003 DELAY( 200 ); 1004 1005 /* Disable all interrupts. */ 1006 outb( sc->addr + FE_DLCR2, 0 ); 1007 outb( sc->addr + FE_DLCR3, 0 ); 1008 1009#if 1 /* FIXME. */ 1010 /* Initialize system bus interface and encoder/decoder operation. */ 1011 outb( sc->addr + FE_MBH0, FE_MBH0_MAGIC | FE_MBH0_INTR_DISABLE ); 1012#endif 1013 1014 /* 1015 * That's all. MBH10302 occupies 32 I/O addresses, by the way. 1016 */ 1017 return 32; 1018} 1019 1020/* MBH specific initialization routine. */ 1021static void 1022fe_init_mbh ( struct fe_softc * sc ) 1023{ 1024 /* Probably required after hot-insertion... */ 1025 1026 /* Wait for a while. I'm not sure this is necessary. FIXME. */ 1027 DELAY(200); 1028 1029 /* Minimul initialization of 86960. */ 1030 outb( sc->addr + FE_DLCR6, sc->proto_dlcr6 | FE_D6_DLC_DISABLE ); 1031 DELAY( 200 ); 1032 1033 /* Disable all interrupts. */ 1034 outb( sc->addr + FE_DLCR2, 0 ); 1035 outb( sc->addr + FE_DLCR3, 0 ); 1036 1037 /* Enable master interrupt flag. */ 1038 outb( sc->addr + FE_MBH0, FE_MBH0_MAGIC | FE_MBH0_INTR_ENABLE ); 1039} 1040 1041/* 1042 * Install interface into kernel networking data structures 1043 */ 1044static int 1045fe_attach ( struct isa_device *isa_dev ) 1046{ 1047 struct fe_softc *sc = &fe_softc[isa_dev->id_unit]; 1048 1049 /* 1050 * Initialize ifnet structure 1051 */
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1052 sc->sc_if.if_softc = sc; |
1053 sc->sc_if.if_unit = sc->sc_unit; 1054 sc->sc_if.if_name = "fe"; 1055 sc->sc_if.if_output = ether_output; 1056 sc->sc_if.if_start = fe_start; 1057 sc->sc_if.if_ioctl = fe_ioctl; 1058 sc->sc_if.if_watchdog = fe_watchdog; 1059 1060 /* 1061 * Set default interface flags. 1062 */ 1063 sc->sc_if.if_flags = IFF_BROADCAST | IFF_MULTICAST; 1064 1065 /* 1066 * Set maximum size of output queue, if it has not been set. 1067 * It is done here as this driver may be started after the 1068 * system intialization (i.e., the interface is PCMCIA.) 1069 * 1070 * I'm not sure this is really necessary, but, even if it is, 1071 * it should be done somewhere else, e.g., in if_attach(), 1072 * since it must be a common workaround for all network drivers. 1073 * FIXME. 1074 */ 1075 if ( sc->sc_if.if_snd.ifq_maxlen == 0 ) { 1076 sc->sc_if.if_snd.ifq_maxlen = ifqmaxlen; 1077 } 1078 1079#if FE_DEBUG >= 3 1080 fe_dump( LOG_INFO, sc, "attach()" ); 1081#endif 1082 1083#if FE_SINGLE_TRANSMISSION 1084 /* Override txb config to allocate minimum. */ 1085 sc->proto_dlcr6 &= ~FE_D6_TXBSIZ 1086 sc->proto_dlcr6 |= FE_D6_TXBSIZ_2x2KB; 1087#endif 1088 1089 /* Modify hardware config if it is requested. */ 1090 if ( isa_dev->id_flags & FE_FLAGS_OVERRIDE_DLCR6 ) { 1091 sc->proto_dlcr6 = isa_dev->id_flags & FE_FLAGS_DLCR6_VALUE; 1092 } 1093 1094 /* Find TX buffer size, based on the hardware dependent proto. */ 1095 switch ( sc->proto_dlcr6 & FE_D6_TXBSIZ ) { 1096 case FE_D6_TXBSIZ_2x2KB: sc->txb_size = 2048; break; 1097 case FE_D6_TXBSIZ_2x4KB: sc->txb_size = 4096; break; 1098 case FE_D6_TXBSIZ_2x8KB: sc->txb_size = 8192; break; 1099 default: 1100 /* Oops, we can't work with single buffer configuration. */ 1101#if FE_DEBUG >= 2 1102 log( LOG_WARNING, "fe%d: strange TXBSIZ config; fixing\n", 1103 sc->sc_unit ); 1104#endif 1105 sc->proto_dlcr6 &= ~FE_D6_TXBSIZ; 1106 sc->proto_dlcr6 |= FE_D6_TXBSIZ_2x2KB; 1107 sc->txb_size = 2048; 1108 break; 1109 } 1110 1111 /* Attach and stop the interface. */ 1112 if_attach( &sc->sc_if ); 1113 fe_stop( sc->sc_unit ); /* This changes the state to IDLE. */
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1125 fe_setlinkaddr( sc );
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1114 ether_ifattach(&sc->sc_if); |
1115 1116 /* Print additional info when attached. */ 1117 printf( "fe%d: address %6D, type %s\n", sc->sc_unit, 1118 sc->sc_enaddr, ":" , sc->typestr ); 1119#if FE_DEBUG >= 3 1120 { 1121 int buf, txb, bbw, sbw, ram; 1122 1123 buf = txb = bbw = sbw = ram = -1; 1124 switch ( sc->proto_dlcr6 & FE_D6_BUFSIZ ) { 1125 case FE_D6_BUFSIZ_8KB: buf = 8; break; 1126 case FE_D6_BUFSIZ_16KB: buf = 16; break; 1127 case FE_D6_BUFSIZ_32KB: buf = 32; break; 1128 case FE_D6_BUFSIZ_64KB: buf = 64; break; 1129 } 1130 switch ( sc->proto_dlcr6 & FE_D6_TXBSIZ ) { 1131 case FE_D6_TXBSIZ_2x2KB: txb = 2; break; 1132 case FE_D6_TXBSIZ_2x4KB: txb = 4; break; 1133 case FE_D6_TXBSIZ_2x8KB: txb = 8; break; 1134 } 1135 switch ( sc->proto_dlcr6 & FE_D6_BBW ) { 1136 case FE_D6_BBW_BYTE: bbw = 8; break; 1137 case FE_D6_BBW_WORD: bbw = 16; break; 1138 } 1139 switch ( sc->proto_dlcr6 & FE_D6_SBW ) { 1140 case FE_D6_SBW_BYTE: sbw = 8; break; 1141 case FE_D6_SBW_WORD: sbw = 16; break; 1142 } 1143 switch ( sc->proto_dlcr6 & FE_D6_SRAM ) { 1144 case FE_D6_SRAM_100ns: ram = 100; break; 1145 case FE_D6_SRAM_150ns: ram = 150; break; 1146 } 1147 printf( "fe%d: SRAM %dKB %dbit %dns, TXB %dKBx2, %dbit I/O\n", 1148 sc->sc_unit, buf, bbw, ram, txb, sbw ); 1149 } 1150#endif 1151 1152#if NBPFILTER > 0 1153 /* If BPF is in the kernel, call the attach for it. */
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1165 bpfattach(&sc->bpf, &sc->sc_if, DLT_EN10MB,
1166 sizeof(struct ether_header));
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1154 bpfattach(&sc->sc_if, DLT_EN10MB, sizeof(struct ether_header)); |
1155#endif 1156 return 1; 1157} 1158 1159/* 1160 * Reset interface. 1161 */ 1162static void 1163fe_reset ( int unit ) 1164{ 1165 /* 1166 * Stop interface and re-initialize. 1167 */ 1168 fe_stop(unit); 1169 fe_init(unit); 1170} 1171 1172/* 1173 * Stop everything on the interface. 1174 * 1175 * All buffered packets, both transmitting and receiving, 1176 * if any, will be lost by stopping the interface. 1177 */ 1178static void 1179fe_stop ( int unit ) 1180{ 1181 struct fe_softc *sc = &fe_softc[unit]; 1182 int s; 1183 1184 s = splimp(); 1185 1186#if FE_DEBUG >= 3 1187 fe_dump( LOG_INFO, sc, "stop()" ); 1188#endif 1189 1190 /* Disable interrupts. */ 1191 outb( sc->addr + FE_DLCR2, 0x00 ); 1192 outb( sc->addr + FE_DLCR3, 0x00 ); 1193 1194 /* Stop interface hardware. */ 1195 DELAY( 200 ); 1196 outb( sc->addr + FE_DLCR6, sc->proto_dlcr6 | FE_D6_DLC_DISABLE ); 1197 DELAY( 200 ); 1198 1199 /* Clear all interrupt status. */ 1200 outb( sc->addr + FE_DLCR0, 0xFF ); 1201 outb( sc->addr + FE_DLCR1, 0xFF ); 1202 1203 /* Put the chip in stand-by mode. */ 1204 DELAY( 200 ); 1205 outb( sc->addr + FE_DLCR7, sc->proto_dlcr7 | FE_D7_POWER_DOWN ); 1206 DELAY( 200 ); 1207 1208 /* Reset transmitter variables and interface flags. */ 1209 sc->sc_if.if_flags &= ~( IFF_OACTIVE | IFF_RUNNING ); 1210 sc->sc_if.if_timer = 0; 1211 sc->txb_free = sc->txb_size; 1212 sc->txb_count = 0; 1213 sc->txb_sched = 0; 1214 1215 /* MAR loading can be delayed. */ 1216 sc->filter_change = 0; 1217 1218 /* Update config status also. */ 1219 sc->sc_dcstate = DC_IDLE; 1220 1221 /* Call a hook. */ 1222 if ( sc->stop ) sc->stop( sc ); 1223 1224#if FE_DEBUG >= 3 1225 fe_dump( LOG_INFO, sc, "end of stop()" ); 1226#endif 1227 1228 (void) splx(s); 1229} 1230 1231/* 1232 * Device timeout/watchdog routine. Entered if the device neglects to 1233 * generate an interrupt after a transmit has been started on it. 1234 */ 1235static void 1236fe_watchdog ( struct ifnet *ifp ) 1237{ 1238 struct fe_softc *sc = (struct fe_softc *)ifp; 1239 1240#if FE_DEBUG >= 1 1241 log( LOG_ERR, "fe%d: transmission timeout (%d+%d)%s\n", 1242 ifp->if_unit, sc->txb_sched, sc->txb_count, 1243 ( ifp->if_flags & IFF_UP ) ? "" : " when down" ); 1244#endif 1245#if FE_DEBUG >= 3 1246 fe_dump( LOG_INFO, sc, NULL ); 1247#endif 1248 1249 /* Record how many packets are lost by this accident. */ 1250 ifp->if_oerrors += sc->txb_sched + sc->txb_count; 1251 1252 /* Put the interface into known initial state. */ 1253 if ( ifp->if_flags & IFF_UP ) { 1254 fe_reset( ifp->if_unit ); 1255 } else { 1256 fe_stop( ifp->if_unit ); 1257 } 1258} 1259 1260/* 1261 * Initialize device. 1262 */ 1263static void 1264fe_init ( int unit ) 1265{ 1266 struct fe_softc *sc = &fe_softc[unit]; 1267 int i, s; 1268 1269#if FE_DEBUG >= 3 1270 fe_dump( LOG_INFO, sc, "init()" ); 1271#endif 1272 1273 /* We need an address. */ 1274 if (sc->sc_if.if_addrlist == 0) { 1275#if FE_DEBUG >= 1 1276 log( LOG_ERR, "fe%d: init() without any address\n", 1277 sc->sc_unit ); 1278#endif 1279 return; 1280 } 1281 1282#if FE_DEBUG >= 1 1283 /* 1284 * Make sure we have a valid station address. 1285 * The following test is applicable for any Ethernet interfaces. 1286 * It can be done in somewhere common to all of them. FIXME. 1287 */ 1288 if ( ( sc->sc_enaddr[ 0 ] & 0x01 ) != 0 1289 || ( sc->sc_enaddr[ 0 ] == 0x00 1290 && sc->sc_enaddr[ 1 ] == 0x00 1291 && sc->sc_enaddr[ 2 ] == 0x00 ) ) { 1292 log( LOG_ERR, "fe%d: invalid station address (%6D)\n", 1293 sc->sc_unit, sc->sc_enaddr, ":" ); 1294 return; 1295 } 1296#endif 1297 1298 /* Start initializing 86960. */ 1299 s = splimp(); 1300 1301 /* Call a hook. */ 1302 if ( sc->init ) sc->init( sc ); 1303 1304#if FE_DEBUG >= 3 1305 fe_dump( LOG_INFO, sc, "after init hook" ); 1306#endif 1307 1308 /* 1309 * Make sure to disable the chip, also. 1310 * This may also help re-programming the chip after 1311 * hot insertion of PCMCIAs. 1312 */ 1313 outb( sc->addr + FE_DLCR6, sc->proto_dlcr6 | FE_D6_DLC_DISABLE ); 1314 1315 /* Power up the chip and select register bank for DLCRs. */ 1316 DELAY(200); 1317 outb( sc->addr + FE_DLCR7, 1318 sc->proto_dlcr7 | FE_D7_RBS_DLCR | FE_D7_POWER_UP ); 1319 DELAY(200); 1320 1321 /* Feed the station address. */ 1322 outblk( sc->addr + FE_DLCR8, sc->sc_enaddr, ETHER_ADDR_LEN ); 1323 1324 /* Clear multicast address filter to receive nothing. */ 1325 outb( sc->addr + FE_DLCR7, 1326 sc->proto_dlcr7 | FE_D7_RBS_MAR | FE_D7_POWER_UP ); 1327 outblk( sc->addr + FE_MAR8, fe_filter_nothing.data, FE_FILTER_LEN ); 1328 1329 /* Select the BMPR bank for runtime register access. */ 1330 outb( sc->addr + FE_DLCR7, 1331 sc->proto_dlcr7 | FE_D7_RBS_BMPR | FE_D7_POWER_UP ); 1332 1333 /* Initialize registers. */ 1334 outb( sc->addr + FE_DLCR0, 0xFF ); /* Clear all bits. */ 1335 outb( sc->addr + FE_DLCR1, 0xFF ); /* ditto. */ 1336 outb( sc->addr + FE_DLCR2, 0x00 ); 1337 outb( sc->addr + FE_DLCR3, 0x00 ); 1338 outb( sc->addr + FE_DLCR4, sc->proto_dlcr4 ); 1339 outb( sc->addr + FE_DLCR5, sc->proto_dlcr5 ); 1340 outb( sc->addr + FE_BMPR10, 0x00 ); 1341 outb( sc->addr + FE_BMPR11, FE_B11_CTRL_SKIP ); 1342 outb( sc->addr + FE_BMPR12, 0x00 ); 1343 outb( sc->addr + FE_BMPR13, FE_B13_TPTYPE_UTP | FE_B13_PORT_AUTO ); 1344 outb( sc->addr + FE_BMPR14, 0x00 ); 1345 outb( sc->addr + FE_BMPR15, 0x00 ); 1346 1347#if FE_DEBUG >= 3 1348 fe_dump( LOG_INFO, sc, "just before enabling DLC" ); 1349#endif 1350 1351 /* Enable interrupts. */ 1352 outb( sc->addr + FE_DLCR2, FE_TMASK ); 1353 outb( sc->addr + FE_DLCR3, FE_RMASK ); 1354 1355 /* Enable transmitter and receiver. */ 1356 DELAY(200); 1357 outb( sc->addr + FE_DLCR6, sc->proto_dlcr6 | FE_D6_DLC_ENABLE ); 1358 DELAY(200); 1359 1360#if FE_DEBUG >= 3 1361 fe_dump( LOG_INFO, sc, "just after enabling DLC" ); 1362#endif 1363 /* 1364 * Make sure to empty the receive buffer. 1365 * 1366 * This may be redundant, but *if* the receive buffer were full 1367 * at this point, the driver would hang. I have experienced 1368 * some strange hangups just after UP. I hope the following 1369 * code solve the problem. 1370 * 1371 * I have changed the order of hardware initialization. 1372 * I think the receive buffer cannot have any packets at this 1373 * point in this version. The following code *must* be 1374 * redundant now. FIXME. 1375 */ 1376 for ( i = 0; i < FE_MAX_RECV_COUNT; i++ ) { 1377 if ( inb( sc->addr + FE_DLCR5 ) & FE_D5_BUFEMP ) break; 1378 outb( sc->addr + FE_BMPR14, FE_B14_SKIP ); 1379 } 1380#if FE_DEBUG >= 1 1381 if ( i >= FE_MAX_RECV_COUNT ) { 1382 log( LOG_ERR, "fe%d: cannot empty receive buffer\n", 1383 sc->sc_unit ); 1384 } 1385#endif 1386#if FE_DEBUG >= 3 1387 if ( i < FE_MAX_RECV_COUNT ) { 1388 log( LOG_INFO, "fe%d: receive buffer emptied (%d)\n", 1389 sc->sc_unit, i ); 1390 } 1391#endif 1392 1393#if FE_DEBUG >= 3 1394 fe_dump( LOG_INFO, sc, "after ERB loop" ); 1395#endif 1396 1397 /* Do we need this here? */ 1398 outb( sc->addr + FE_DLCR0, 0xFF ); /* Clear all bits. */ 1399 outb( sc->addr + FE_DLCR1, 0xFF ); /* ditto. */ 1400 1401#if FE_DEBUG >= 3 1402 fe_dump( LOG_INFO, sc, "after FIXME" ); 1403#endif 1404 /* Set 'running' flag, because we are now running. */ 1405 sc->sc_if.if_flags |= IFF_RUNNING; 1406 1407 /* Update device config status. */ 1408 sc->sc_dcstate = DC_BUSY; 1409 1410 /* 1411 * At this point, the interface is runnung properly, 1412 * except that it receives *no* packets. we then call 1413 * fe_setmode() to tell the chip what packets to be 1414 * received, based on the if_flags and multicast group 1415 * list. It completes the initialization process. 1416 */ 1417 fe_setmode( sc ); 1418 1419#if FE_DEBUG >= 3 1420 fe_dump( LOG_INFO, sc, "after setmode" ); 1421#endif 1422 1423 /* ...and attempt to start output queued packets. */ 1424 fe_start( &sc->sc_if ); 1425 1426#if FE_DEBUG >= 3 1427 fe_dump( LOG_INFO, sc, "init() done" ); 1428#endif 1429 1430 (void) splx(s); 1431} 1432 1433/* 1434 * This routine actually starts the transmission on the interface 1435 */ 1436static INLINE void 1437fe_xmit ( struct fe_softc * sc ) 1438{ 1439 /* 1440 * Set a timer just in case we never hear from the board again. 1441 * We use longer timeout for multiple packet transmission. 1442 * I'm not sure this timer value is appropriate. FIXME. 1443 */ 1444 sc->sc_if.if_timer = 1 + sc->txb_count; 1445 1446 /* Update txb variables. */ 1447 sc->txb_sched = sc->txb_count; 1448 sc->txb_count = 0; 1449 sc->txb_free = sc->txb_size; 1450 1451#if FE_DELAYED_PADDING 1452 /* Omit the postponed padding process. */ 1453 sc->txb_padding = 0; 1454#endif 1455 1456 /* Start transmitter, passing packets in TX buffer. */ 1457 outb( sc->addr + FE_BMPR10, sc->txb_sched | FE_B10_START ); 1458} 1459 1460/* 1461 * Start output on interface. 1462 * We make two assumptions here: 1463 * 1) that the current priority is set to splimp _before_ this code 1464 * is called *and* is returned to the appropriate priority after 1465 * return 1466 * 2) that the IFF_OACTIVE flag is checked before this code is called 1467 * (i.e. that the output part of the interface is idle) 1468 */ 1469void 1470fe_start ( struct ifnet *ifp ) 1471{ 1472 struct fe_softc *sc = IFNET2SOFTC( ifp ); 1473 struct mbuf *m; 1474 1475#if FE_DEBUG >= 1 1476 /* Just a sanity check. */ 1477 if ( ( sc->txb_count == 0 ) != ( sc->txb_free == sc->txb_size ) ) { 1478 /* 1479 * Txb_count and txb_free co-works to manage the 1480 * transmission buffer. Txb_count keeps track of the 1481 * used potion of the buffer, while txb_free does unused 1482 * potion. So, as long as the driver runs properly, 1483 * txb_count is zero if and only if txb_free is same 1484 * as txb_size (which represents whole buffer.) 1485 */ 1486 log( LOG_ERR, "fe%d: inconsistent txb variables (%d, %d)\n", 1487 sc->sc_unit, sc->txb_count, sc->txb_free ); 1488 /* 1489 * So, what should I do, then? 1490 * 1491 * We now know txb_count and txb_free contradicts. We 1492 * cannot, however, tell which is wrong. More 1493 * over, we cannot peek 86960 transmission buffer or 1494 * reset the transmission buffer. (In fact, we can 1495 * reset the entire interface. I don't want to do it.) 1496 * 1497 * If txb_count is incorrect, leaving it as is will cause 1498 * sending of gabages after next interrupt. We have to 1499 * avoid it. Hence, we reset the txb_count here. If 1500 * txb_free was incorrect, resetting txb_count just loose 1501 * some packets. We can live with it. 1502 */ 1503 sc->txb_count = 0; 1504 } 1505#endif 1506 1507#if FE_DEBUG >= 1 1508 /* 1509 * First, see if there are buffered packets and an idle 1510 * transmitter - should never happen at this point. 1511 */ 1512 if ( ( sc->txb_count > 0 ) && ( sc->txb_sched == 0 ) ) { 1513 log( LOG_ERR, 1514 "fe%d: transmitter idle with %d buffered packets\n", 1515 sc->sc_unit, sc->txb_count ); 1516 fe_xmit( sc ); 1517 } 1518#endif 1519 1520 /* 1521 * Stop accepting more transmission packets temporarily, when 1522 * a filter change request is delayed. Updating the MARs on 1523 * 86960 flushes the transmisstion buffer, so it is delayed 1524 * until all buffered transmission packets have been sent 1525 * out. 1526 */ 1527 if ( sc->filter_change ) { 1528 /* 1529 * Filter change requst is delayed only when the DLC is 1530 * working. DLC soon raise an interrupt after finishing 1531 * the work. 1532 */ 1533 goto indicate_active; 1534 } 1535 1536 for (;;) { 1537 1538 /* 1539 * See if there is room to put another packet in the buffer. 1540 * We *could* do better job by peeking the send queue to 1541 * know the length of the next packet. Current version just 1542 * tests against the worst case (i.e., longest packet). FIXME. 1543 * 1544 * When adding the packet-peek feature, don't forget adding a 1545 * test on txb_count against QUEUEING_MAX. 1546 * There is a little chance the packet count exceeds 1547 * the limit. Assume transmission buffer is 8KB (2x8KB 1548 * configuration) and an application sends a bunch of small 1549 * (i.e., minimum packet sized) packets rapidly. An 8KB 1550 * buffer can hold 130 blocks of 62 bytes long... 1551 */ 1552 if ( sc->txb_free < ETHER_MAX_LEN + FE_DATA_LEN_LEN ) { 1553 /* No room. */ 1554 goto indicate_active; 1555 } 1556 1557#if FE_SINGLE_TRANSMISSION 1558 if ( sc->txb_count > 0 ) { 1559 /* Just one packet per a transmission buffer. */ 1560 goto indicate_active; 1561 } 1562#endif 1563 1564 /* 1565 * Get the next mbuf chain for a packet to send. 1566 */ 1567 IF_DEQUEUE( &sc->sc_if.if_snd, m ); 1568 if ( m == NULL ) { 1569 /* No more packets to send. */ 1570 goto indicate_inactive; 1571 } 1572 1573 /* 1574 * Copy the mbuf chain into the transmission buffer. 1575 * txb_* variables are updated as necessary. 1576 */ 1577 fe_write_mbufs( sc, m ); 1578 1579 /* Start transmitter if it's idle. */ 1580 if ( sc->txb_sched == 0 ) fe_xmit( sc ); 1581 1582#if 0 /* Turned of, since our interface is now duplex. */ 1583 /* 1584 * Tap off here if there is a bpf listener. 1585 */ 1586#if NBPFILTER > 0 1587 if ( sc->bpf ) bpf_mtap( sc->bpf, m ); 1588#endif 1589#endif 1590 1591 m_freem( m ); 1592 } 1593 1594 indicate_inactive: 1595 /* 1596 * We are using the !OACTIVE flag to indicate to 1597 * the outside world that we can accept an 1598 * additional packet rather than that the 1599 * transmitter is _actually_ active. Indeed, the 1600 * transmitter may be active, but if we haven't 1601 * filled all the buffers with data then we still 1602 * want to accept more. 1603 */ 1604 sc->sc_if.if_flags &= ~IFF_OACTIVE; 1605 return; 1606 1607 indicate_active: 1608 /* 1609 * The transmitter is active, and there are no room for 1610 * more outgoing packets in the transmission buffer. 1611 */ 1612 sc->sc_if.if_flags |= IFF_OACTIVE; 1613 return; 1614} 1615 1616/* 1617 * Drop (skip) a packet from receive buffer in 86960 memory. 1618 */ 1619static INLINE void 1620fe_droppacket ( struct fe_softc * sc ) 1621{ 1622 outb( sc->addr + FE_BMPR14, FE_B14_SKIP ); 1623} 1624 1625/* 1626 * Transmission interrupt handler 1627 * The control flow of this function looks silly. FIXME. 1628 */ 1629static void 1630fe_tint ( struct fe_softc * sc, u_char tstat ) 1631{ 1632 int left; 1633 int col; 1634 1635 /* 1636 * Handle "excessive collision" interrupt. 1637 */ 1638 if ( tstat & FE_D0_COLL16 ) { 1639 1640 /* 1641 * Find how many packets (including this collided one) 1642 * are left unsent in transmission buffer. 1643 */ 1644 left = inb( sc->addr + FE_BMPR10 ); 1645 1646#if FE_DEBUG >= 2 1647 log( LOG_WARNING, "fe%d: excessive collision (%d/%d)\n", 1648 sc->sc_unit, left, sc->txb_sched ); 1649#endif 1650#if FE_DEBUG >= 3 1651 fe_dump( LOG_INFO, sc, NULL ); 1652#endif 1653 1654 /* 1655 * Update statistics. 1656 */ 1657 sc->sc_if.if_collisions += 16; 1658 sc->sc_if.if_oerrors++; 1659 sc->sc_if.if_opackets += sc->txb_sched - left; 1660 1661 /* 1662 * Collision statistics has been updated. 1663 * Clear the collision flag on 86960 now to avoid confusion. 1664 */ 1665 outb( sc->addr + FE_DLCR0, FE_D0_COLLID ); 1666 1667 /* 1668 * Restart transmitter, skipping the 1669 * collided packet. 1670 * 1671 * We *must* skip the packet to keep network running 1672 * properly. Excessive collision error is an 1673 * indication of the network overload. If we 1674 * tried sending the same packet after excessive 1675 * collision, the network would be filled with 1676 * out-of-time packets. Packets belonging 1677 * to reliable transport (such as TCP) are resent 1678 * by some upper layer. 1679 */ 1680 outb( sc->addr + FE_BMPR11, 1681 FE_B11_CTRL_SKIP | FE_B11_MODE1 ); 1682 sc->txb_sched = left - 1; 1683 } 1684 1685 /* 1686 * Handle "transmission complete" interrupt. 1687 */ 1688 if ( tstat & FE_D0_TXDONE ) { 1689 1690 /* 1691 * Add in total number of collisions on last 1692 * transmission. We also clear "collision occurred" flag 1693 * here. 1694 * 1695 * 86960 has a design flaw on collision count on multiple 1696 * packet transmission. When we send two or more packets 1697 * with one start command (that's what we do when the 1698 * transmission queue is clauded), 86960 informs us number 1699 * of collisions occured on the last packet on the 1700 * transmission only. Number of collisions on previous 1701 * packets are lost. I have told that the fact is clearly 1702 * stated in the Fujitsu document. 1703 * 1704 * I considered not to mind it seriously. Collision 1705 * count is not so important, anyway. Any comments? FIXME. 1706 */ 1707 1708 if ( inb( sc->addr + FE_DLCR0 ) & FE_D0_COLLID ) { 1709 1710 /* Clear collision flag. */ 1711 outb( sc->addr + FE_DLCR0, FE_D0_COLLID ); 1712 1713 /* Extract collision count from 86960. */ 1714 col = inb( sc->addr + FE_DLCR4 ); 1715 col = ( col & FE_D4_COL ) >> FE_D4_COL_SHIFT; 1716 if ( col == 0 ) { 1717 /* 1718 * Status register indicates collisions, 1719 * while the collision count is zero. 1720 * This can happen after multiple packet 1721 * transmission, indicating that one or more 1722 * previous packet(s) had been collided. 1723 * 1724 * Since the accurate number of collisions 1725 * has been lost, we just guess it as 1; 1726 * Am I too optimistic? FIXME. 1727 */ 1728 col = 1; 1729 } 1730 sc->sc_if.if_collisions += col; 1731#if FE_DEBUG >= 3 1732 log( LOG_WARNING, "fe%d: %d collision(s) (%d)\n", 1733 sc->sc_unit, col, sc->txb_sched ); 1734#endif 1735 } 1736 1737 /* 1738 * Update total number of successfully 1739 * transmitted packets. 1740 */ 1741 sc->sc_if.if_opackets += sc->txb_sched; 1742 sc->txb_sched = 0; 1743 1744 /* 1745 * The transmitter is no more active. 1746 * Reset output active flag and watchdog timer. 1747 */ 1748 sc->sc_if.if_flags &= ~IFF_OACTIVE; 1749 sc->sc_if.if_timer = 0; 1750 1751 /* 1752 * If more data is ready to transmit in the buffer, start 1753 * transmitting them. Otherwise keep transmitter idle, 1754 * even if more data is queued. This gives receive 1755 * process a slight priority. 1756 */ 1757 if ( sc->txb_count > 0 ) fe_xmit( sc ); 1758 } 1759} 1760 1761/* 1762 * Ethernet interface receiver interrupt. 1763 */ 1764static void 1765fe_rint ( struct fe_softc * sc, u_char rstat ) 1766{ 1767 u_short len; 1768 u_char status; 1769 int i; 1770 1771 /* 1772 * Update statistics if this interrupt is caused by an error. 1773 */ 1774 if ( rstat & ( FE_D1_OVRFLO | FE_D1_CRCERR 1775 | FE_D1_ALGERR | FE_D1_SRTPKT ) ) { 1776#if FE_DEBUG >= 3 1777 log( LOG_WARNING, 1778 "fe%d: receive error: %s%s%s%s(%02x)\n", 1779 sc->sc_unit, 1780 rstat & FE_D1_OVRFLO ? "OVR " : "", 1781 rstat & FE_D1_CRCERR ? "CRC " : "", 1782 rstat & FE_D1_ALGERR ? "ALG " : "", 1783 rstat & FE_D1_SRTPKT ? "LEN " : "", 1784 rstat ); 1785#endif 1786 sc->sc_if.if_ierrors++; 1787 } 1788 1789 /* 1790 * MB86960 has a flag indicating "receive queue empty." 1791 * We just loop cheking the flag to pull out all received 1792 * packets. 1793 * 1794 * We limit the number of iterrations to avoid inifnit-loop. 1795 * It can be caused by a very slow CPU (some broken 1796 * peripheral may insert incredible number of wait cycles) 1797 * or, worse, by a broken MB86960 chip. 1798 */ 1799 for ( i = 0; i < FE_MAX_RECV_COUNT; i++ ) { 1800 1801 /* Stop the iterration if 86960 indicates no packets. */ 1802 if ( inb( sc->addr + FE_DLCR5 ) & FE_D5_BUFEMP ) break; 1803 1804 /* 1805 * Extract A receive status byte. 1806 * As our 86960 is in 16 bit bus access mode, we have to 1807 * use inw() to get the status byte. The significant 1808 * value is returned in lower 8 bits. 1809 */ 1810 status = ( u_char )inw( sc->addr + FE_BMPR8 ); 1811#if FE_DEBUG >= 4 1812 log( LOG_INFO, "fe%d: receive status = %04x\n", 1813 sc->sc_unit, status ); 1814#endif 1815 1816 /* 1817 * If there was an error, update statistics and drop 1818 * the packet, unless the interface is in promiscuous 1819 * mode. 1820 */ 1821 if ( ( status & 0xF0 ) != 0x20 ) { 1822 if ( !( sc->sc_if.if_flags & IFF_PROMISC ) ) { 1823 sc->sc_if.if_ierrors++; 1824 fe_droppacket(sc); 1825 continue; 1826 } 1827 } 1828 1829 /* 1830 * Extract the packet length. 1831 * It is a sum of a header (14 bytes) and a payload. 1832 * CRC has been stripped off by the 86960. 1833 */ 1834 len = inw( sc->addr + FE_BMPR8 ); 1835 1836 /* 1837 * MB86965 checks the packet length and drop big packet 1838 * before passing it to us. There are no chance we can 1839 * get [crufty] packets. Hence, if the length exceeds 1840 * the specified limit, it means some serious failure, 1841 * such as out-of-sync on receive buffer management. 1842 * 1843 * Is this statement true? FIXME. 1844 */ 1845 if ( len > ETHER_MAX_LEN || len < ETHER_HDR_SIZE ) { 1846#if FE_DEBUG >= 2 1847 log( LOG_WARNING, 1848 "fe%d: received a %s packet? (%u bytes)\n", 1849 sc->sc_unit, 1850 len < ETHER_HDR_SIZE ? "partial" : "big", 1851 len ); 1852#endif 1853 sc->sc_if.if_ierrors++; 1854 fe_droppacket( sc ); 1855 continue; 1856 } 1857 1858 /* 1859 * Check for a short (RUNT) packet. We *do* check 1860 * but do nothing other than print a message. 1861 * Short packets are illegal, but does nothing bad 1862 * if it carries data for upper layer. 1863 */ 1864#if FE_DEBUG >= 2 1865 if ( len < ETHER_MIN_LEN ) { 1866 log( LOG_WARNING, 1867 "fe%d: received a short packet? (%u bytes)\n", 1868 sc->sc_unit, len ); 1869 } 1870#endif 1871 1872 /* 1873 * Go get a packet. 1874 */ 1875 if ( fe_get_packet( sc, len ) < 0 ) { 1876 /* Skip a packet, updating statistics. */ 1877#if FE_DEBUG >= 2 1878 log( LOG_WARNING, "%s%d: no enough mbuf;" 1879 " a packet (%u bytes) dropped\n", 1880 sc->sc_unit, len ); 1881#endif 1882 sc->sc_if.if_ierrors++; 1883 fe_droppacket( sc ); 1884 1885 /* 1886 * We stop receiving packets, even if there are 1887 * more in the buffer. We hope we can get more 1888 * mbuf next time. 1889 */ 1890 return; 1891 } 1892 1893 /* Successfully received a packet. Update stat. */ 1894 sc->sc_if.if_ipackets++; 1895 } 1896} 1897 1898/* 1899 * Ethernet interface interrupt processor 1900 */ 1901void 1902feintr ( int unit ) 1903{ 1904 struct fe_softc *sc = &fe_softc[unit]; 1905 u_char tstat, rstat; 1906 1907 /* 1908 * Loop until there are no more new interrupt conditions. 1909 */ 1910 for (;;) { 1911 1912#if FE_DEBUG >= 4 1913 fe_dump( LOG_INFO, sc, "intr()" ); 1914#endif 1915 1916 /* 1917 * Get interrupt conditions, masking unneeded flags. 1918 */ 1919 tstat = inb( sc->addr + FE_DLCR0 ) & FE_TMASK; 1920 rstat = inb( sc->addr + FE_DLCR1 ) & FE_RMASK; 1921 if ( tstat == 0 && rstat == 0 ) break; 1922 1923 /* 1924 * Reset the conditions we are acknowledging. 1925 */ 1926 outb( sc->addr + FE_DLCR0, tstat ); 1927 outb( sc->addr + FE_DLCR1, rstat ); 1928 1929 /* 1930 * Handle transmitter interrupts. Handle these first because 1931 * the receiver will reset the board under some conditions. 1932 */ 1933 if ( tstat ) { 1934 fe_tint( sc, tstat ); 1935 } 1936 1937 /* 1938 * Handle receiver interrupts 1939 */ 1940 if ( rstat ) { 1941 fe_rint( sc, rstat ); 1942 } 1943 1944 /* 1945 * Update the multicast address filter if it is 1946 * needed and possible. We do it now, because 1947 * we can make sure the transmission buffer is empty, 1948 * and there is a good chance that the receive queue 1949 * is empty. It will minimize the possibility of 1950 * packet lossage. 1951 */ 1952 if ( sc->filter_change 1953 && sc->txb_count == 0 && sc->txb_sched == 0 ) { 1954 fe_loadmar(sc); 1955 sc->sc_if.if_flags &= ~IFF_OACTIVE; 1956 } 1957 1958 /* 1959 * If it looks like the transmitter can take more data, 1960 * attempt to start output on the interface. This is done 1961 * after handling the receiver interrupt to give the 1962 * receive operation priority. 1963 * 1964 * BTW, I'm not sure in what case the OACTIVE is on at 1965 * this point. Is the following test redundant? 1966 * 1967 * No. This routine polls for both transmitter and 1968 * receiver interrupts. 86960 can raise a receiver 1969 * interrupt when the transmission buffer is full. 1970 */ 1971 if ( ( sc->sc_if.if_flags & IFF_OACTIVE ) == 0 ) { 1972 fe_start( &sc->sc_if ); 1973 } 1974 1975 } 1976} 1977 1978/* 1979 * Process an ioctl request. This code needs some work - it looks 1980 * pretty ugly. 1981 */ 1982int 1983fe_ioctl ( struct ifnet *ifp, int command, caddr_t data ) 1984{ 1985 struct fe_softc *sc = IFNET2SOFTC( ifp ); 1986 int s, error = 0; 1987 1988#if FE_DEBUG >= 3 1989 log( LOG_INFO, "fe%d: ioctl(%x)\n", sc->sc_unit, command ); 1990#endif 1991 1992 s = splimp(); 1993 1994 switch (command) { 1995 1996 case SIOCSIFADDR: 1997 { 1998 struct ifaddr * ifa = ( struct ifaddr * )data; 1999 2000 sc->sc_if.if_flags |= IFF_UP; 2001 2002 switch (ifa->ifa_addr->sa_family) { 2003#ifdef INET 2004 case AF_INET: 2005 fe_init( sc->sc_unit ); /* before arpwhohas */ 2006 arp_ifinit( &sc->arpcom, ifa ); 2007 break; 2008#endif 2009#ifdef IPX 2010 2011 /* 2012 * XXX - This code is probably wrong 2013 */ 2014 case AF_IPX: 2015 { 2016 register struct ipx_addr *ina 2017 = &(IA_SIPX(ifa)->sipx_addr); 2018 2019 if (ipx_nullhost(*ina)) 2020 ina->x_host = 2021 *(union ipx_host *) (sc->sc_enaddr); 2022 else { 2023 bcopy((caddr_t) ina->x_host.c_host, 2024 (caddr_t) sc->sc_enaddr, 2025 sizeof(sc->sc_enaddr)); 2026 } 2027 2028 /* 2029 * Set new address 2030 */ 2031 fe_init(sc->sc_unit); 2032 break; 2033 } 2034#endif 2035#ifdef NS 2036 2037 /* 2038 * XXX - This code is probably wrong 2039 */ 2040 case AF_NS: 2041 { 2042 register struct ns_addr *ina 2043 = &(IA_SNS(ifa)->sns_addr); 2044 2045 if (ns_nullhost(*ina)) 2046 ina->x_host = 2047 *(union ns_host *) (sc->sc_enaddr); 2048 else { 2049 bcopy((caddr_t) ina->x_host.c_host, 2050 (caddr_t) sc->sc_enaddr, 2051 sizeof(sc->sc_enaddr)); 2052 } 2053 2054 /* 2055 * Set new address 2056 */ 2057 fe_init(sc->sc_unit); 2058 break; 2059 } 2060#endif 2061 default: 2062 fe_init( sc->sc_unit ); 2063 break; 2064 } 2065 break; 2066 } 2067 2068#ifdef SIOCGIFADDR 2069 case SIOCGIFADDR: 2070 { 2071 struct ifreq * ifr = ( struct ifreq * )data; 2072 struct sockaddr * sa = ( struct sockaddr * )&ifr->ifr_data; 2073 2074 bcopy((caddr_t)sc->sc_enaddr, 2075 (caddr_t)sa->sa_data, ETHER_ADDR_LEN); 2076 break; 2077 } 2078#endif 2079 2080#ifdef SIOCGIFPHYSADDR 2081 case SIOCGIFPHYSADDR: 2082 { 2083 struct ifreq * ifr = ( struct ifreq * )data; 2084 2085 bcopy((caddr_t)sc->sc_enaddr, 2086 (caddr_t)&ifr->ifr_data, ETHER_ADDR_LEN); 2087 break; 2088 } 2089#endif 2090
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2091#ifdef notdef |
2092#ifdef SIOCSIFPHYSADDR 2093 case SIOCSIFPHYSADDR: 2094 { 2095 /* 2096 * Set the physical (Ehternet) address of the interface. 2097 * When and by whom is this command used? FIXME. 2098 */ 2099 struct ifreq * ifr = ( struct ifreq * )data; 2100 2101 bcopy((caddr_t)&ifr->ifr_data, 2102 (caddr_t)sc->sc_enaddr, ETHER_ADDR_LEN); 2103 fe_setlinkaddr( sc ); 2104 break; 2105 } 2106#endif
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2107#endif /* notdef */ |
2108 2109#ifdef SIOCSIFFLAGS 2110 case SIOCSIFFLAGS: 2111 { 2112 /* 2113 * Switch interface state between "running" and 2114 * "stopped", reflecting the UP flag. 2115 */ 2116 if ( sc->sc_if.if_flags & IFF_UP ) { 2117 if ( ( sc->sc_if.if_flags & IFF_RUNNING ) == 0 ) { 2118 fe_init( sc->sc_unit ); 2119 } 2120 } else { 2121 if ( ( sc->sc_if.if_flags & IFF_RUNNING ) != 0 ) { 2122 fe_stop( sc->sc_unit ); 2123 } 2124 } 2125 2126 /* 2127 * Promiscuous and/or multicast flags may have changed, 2128 * so reprogram the multicast filter and/or receive mode. 2129 */ 2130 fe_setmode( sc ); 2131 2132#if FE_DEBUG >= 1 2133 /* "ifconfig fe0 debug" to print register dump. */ 2134 if ( sc->sc_if.if_flags & IFF_DEBUG ) { 2135 fe_dump( LOG_DEBUG, sc, "SIOCSIFFLAGS(DEBUG)" ); 2136 } 2137#endif 2138 break; 2139 } 2140#endif 2141 2142#ifdef SIOCADDMULTI 2143 case SIOCADDMULTI: 2144 case SIOCDELMULTI: 2145 { 2146 /* 2147 * Update out multicast list. 2148 */ 2149 struct ifreq * ifr = ( struct ifreq * )data; 2150 2151 error = ( command == SIOCADDMULTI ) 2152 ? ether_addmulti( ifr, &sc->arpcom ) 2153 : ether_delmulti( ifr, &sc->arpcom ); 2154 2155 if ( error == ENETRESET ) { 2156 /* 2157 * Multicast list has changed; set the hardware filter 2158 * accordingly. 2159 */ 2160 fe_setmode( sc ); 2161 error = 0; 2162 } 2163 2164 break; 2165 } 2166#endif 2167 2168#ifdef SIOCSIFMTU 2169 case SIOCSIFMTU: 2170 { 2171 /* 2172 * Set the interface MTU. 2173 */ 2174 struct ifreq * ifr = ( struct ifreq * )data; 2175 2176 if ( ifr->ifr_mtu > ETHERMTU ) { 2177 error = EINVAL; 2178 } else { 2179 sc->sc_if.if_mtu = ifr->ifr_mtu; 2180 } 2181 break; 2182 } 2183#endif 2184 2185 default: 2186 error = EINVAL; 2187 } 2188 2189 (void) splx(s); 2190 return (error); 2191} 2192 2193/* 2194 * Retreive packet from receive buffer and send to the next level up via 2195 * ether_input(). If there is a BPF listener, give a copy to BPF, too. 2196 * Returns 0 if success, -1 if error (i.e., mbuf allocation failure). 2197 */ 2198static int 2199fe_get_packet ( struct fe_softc * sc, u_short len ) 2200{ 2201 struct ether_header *eh; 2202 struct mbuf *m; 2203 2204 /* 2205 * NFS wants the data be aligned to the word (4 byte) 2206 * boundary. Ethernet header has 14 bytes. There is a 2207 * 2-byte gap. 2208 */ 2209#define NFS_MAGIC_OFFSET 2 2210 2211 /* 2212 * This function assumes that an Ethernet packet fits in an 2213 * mbuf (with a cluster attached when necessary.) On FreeBSD 2214 * 2.0 for x86, which is the primary target of this driver, an 2215 * mbuf cluster has 4096 bytes, and we are happy. On ancient 2216 * BSDs, such as vanilla 4.3 for 386, a cluster size was 1024, 2217 * however. If the following #error message were printed upon 2218 * compile, you need to rewrite this function. 2219 */ 2220#if ( MCLBYTES < ETHER_MAX_LEN + NFS_MAGIC_OFFSET ) 2221#error "Too small MCLBYTES to use fe driver." 2222#endif 2223 2224 /* 2225 * Our strategy has one more problem. There is a policy on 2226 * mbuf cluster allocation. It says that we must have at 2227 * least MINCLSIZE (208 bytes on FreeBSD 2.0 for x86) to 2228 * allocate a cluster. For a packet of a size between 2229 * (MHLEN - 2) to (MINCLSIZE - 2), our code violates the rule... 2230 * On the other hand, the current code is short, simle, 2231 * and fast, however. It does no harmful thing, just waists 2232 * some memory. Any comments? FIXME. 2233 */ 2234 2235 /* Allocate an mbuf with packet header info. */ 2236 MGETHDR(m, M_DONTWAIT, MT_DATA); 2237 if ( m == NULL ) return -1; 2238 2239 /* Attach a cluster if this packet doesn't fit in a normal mbuf. */ 2240 if ( len > MHLEN - NFS_MAGIC_OFFSET ) { 2241 MCLGET( m, M_DONTWAIT ); 2242 if ( !( m->m_flags & M_EXT ) ) { 2243 m_freem( m ); 2244 return -1; 2245 } 2246 } 2247 2248 /* Initialize packet header info. */ 2249 m->m_pkthdr.rcvif = &sc->sc_if; 2250 m->m_pkthdr.len = len; 2251 2252 /* Set the length of this packet. */ 2253 m->m_len = len; 2254 2255 /* The following sillines is to make NFS happy */ 2256 m->m_data += NFS_MAGIC_OFFSET; 2257 2258 /* Get a packet. */ 2259 insw( sc->addr + FE_BMPR8, m->m_data, ( len + 1 ) >> 1 ); 2260 2261 /* Get (actually just point to) the header part. */ 2262 eh = mtod( m, struct ether_header *); 2263 2264#define ETHER_ADDR_IS_MULTICAST(A) (*(char *)(A) & 1) 2265 2266#if NBPFILTER > 0 2267 /* 2268 * Check if there's a BPF listener on this interface. 2269 * If it is, hand off the raw packet to bpf. 2270 */
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2281 if ( sc->bpf ) {
2282 bpf_mtap( sc->bpf, m );
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2271 if ( sc->sc_if.if_bpf ) { 2272 bpf_mtap( &sc->sc_if, m ); |
2273 } 2274#endif 2275 2276 /* 2277 * Make sure this packet is (or may be) directed to us. 2278 * That is, the packet is either unicasted to our address, 2279 * or broad/multi-casted. If any other packets are 2280 * received, it is an indication of an error -- probably 2281 * 86960 is in a wrong operation mode. 2282 * Promiscuous mode is an exception. Under the mode, all 2283 * packets on the media must be received. (We must have 2284 * programmed the 86960 so.) 2285 */ 2286 2287 if ( ( sc->sc_if.if_flags & IFF_PROMISC ) 2288 && !ETHER_ADDR_IS_MULTICAST( eh->ether_dhost ) 2289 && bcmp( eh->ether_dhost, sc->sc_enaddr, ETHER_ADDR_LEN ) != 0 ) { 2290 /* 2291 * The packet was not for us. This is normal since 2292 * we are now in promiscuous mode. Just drop the packet. 2293 */ 2294 m_freem( m ); 2295 return 0; 2296 } 2297 2298#if FE_DEBUG >= 3 2299 if ( !ETHER_ADDR_IS_MULTICAST( eh->ether_dhost ) 2300 && bcmp( eh->ether_dhost, sc->sc_enaddr, ETHER_ADDR_LEN ) != 0 ) { 2301 /* 2302 * This packet was not for us. We can't be in promiscuous 2303 * mode since the case was handled by above test. 2304 * We found an error (of this driver.) 2305 */ 2306 log( LOG_WARNING, 2307 "fe%d: got an unwanted packet, dst = %6D\n", 2308 sc->sc_unit, 2309 eh->ether_dhost , ":" ); 2310 m_freem( m ); 2311 return 0; 2312 } 2313#endif 2314 2315 /* Strip off the Ethernet header. */ 2316 m->m_pkthdr.len -= sizeof ( struct ether_header ); 2317 m->m_len -= sizeof ( struct ether_header ); 2318 m->m_data += sizeof ( struct ether_header ); 2319 2320 /* Feed the packet to upper layer. */ 2321 ether_input( &sc->sc_if, eh, m ); 2322 return 0; 2323} 2324 2325/* 2326 * Write an mbuf chain to the transmission buffer memory using 16 bit PIO. 2327 * Returns number of bytes actually written, including length word. 2328 * 2329 * If an mbuf chain is too long for an Ethernet frame, it is not sent. 2330 * Packets shorter than Ethernet minimum are legal, and we pad them 2331 * before sending out. An exception is "partial" packets which are 2332 * shorter than mandatory Ethernet header. 2333 * 2334 * I wrote a code for an experimental "delayed padding" technique. 2335 * When employed, it postpones the padding process for short packets. 2336 * If xmit() occured at the moment, the padding process is omitted, and 2337 * garbages are sent as pad data. If next packet is stored in the 2338 * transmission buffer before xmit(), write_mbuf() pads the previous 2339 * packet before transmitting new packet. This *may* gain the 2340 * system performance (slightly). 2341 */ 2342static void 2343fe_write_mbufs ( struct fe_softc *sc, struct mbuf *m ) 2344{ 2345 u_short addr_bmpr8 = sc->addr + FE_BMPR8; 2346 u_short length, len; 2347 short pad; 2348 struct mbuf *mp; 2349 u_char *data; 2350 u_short savebyte; /* WARNING: Architecture dependent! */ 2351#define NO_PENDING_BYTE 0xFFFF 2352 2353#if FE_DELAYED_PADDING 2354 /* Do the "delayed padding." */ 2355 pad = sc->txb_padding >> 1; 2356 if ( pad > 0 ) { 2357 while ( --pad >= 0 ) { 2358 outw( addr_bmpr8, 0 ); 2359 } 2360 sc->txb_padding = 0; 2361 } 2362#endif 2363 2364#if FE_DEBUG >= 2 2365 /* First, count up the total number of bytes to copy */ 2366 length = 0; 2367 for ( mp = m; mp != NULL; mp = mp->m_next ) { 2368 length += mp->m_len; 2369 } 2370 /* Check if this matches the one in the packet header. */ 2371 if ( length != m->m_pkthdr.len ) { 2372 log( LOG_WARNING, "fe%d: packet length mismatch? (%d/%d)\n", 2373 sc->sc_unit, length, m->m_pkthdr.len ); 2374 } 2375#else 2376 /* Just use the length value in the packet header. */ 2377 length = m->m_pkthdr.len; 2378#endif 2379 2380#if FE_DEBUG >= 1 2381 /* 2382 * Should never send big packets. If such a packet is passed, 2383 * it should be a bug of upper layer. We just ignore it. 2384 * ... Partial (too short) packets, neither. 2385 */ 2386 if ( length > ETHER_MAX_LEN || length < ETHER_HDR_SIZE ) { 2387 log( LOG_ERR, 2388 "fe%d: got a %s packet (%u bytes) to send\n", 2389 sc->sc_unit, 2390 length < ETHER_HDR_SIZE ? "partial" : "big", length ); 2391 sc->sc_if.if_oerrors++; 2392 return; 2393 } 2394#endif 2395 2396 /* 2397 * Put the length word for this frame. 2398 * Does 86960 accept odd length? -- Yes. 2399 * Do we need to pad the length to minimum size by ourselves? 2400 * -- Generally yes. But for (or will be) the last 2401 * packet in the transmission buffer, we can skip the 2402 * padding process. It may gain performance slightly. FIXME. 2403 */ 2404 outw( addr_bmpr8, max( length, ETHER_MIN_LEN ) ); 2405 2406 /* 2407 * Update buffer status now. 2408 * Truncate the length up to an even number, since we use outw(). 2409 */ 2410 length = ( length + 1 ) & ~1; 2411 sc->txb_free -= FE_DATA_LEN_LEN + max( length, ETHER_MIN_LEN ); 2412 sc->txb_count++; 2413 2414#if FE_DELAYED_PADDING 2415 /* Postpone the packet padding if necessary. */ 2416 if ( length < ETHER_MIN_LEN ) { 2417 sc->txb_padding = ETHER_MIN_LEN - length; 2418 } 2419#endif 2420 2421 /* 2422 * Transfer the data from mbuf chain to the transmission buffer. 2423 * MB86960 seems to require that data be transferred as words, and 2424 * only words. So that we require some extra code to patch 2425 * over odd-length mbufs. 2426 */ 2427 savebyte = NO_PENDING_BYTE; 2428 for ( mp = m; mp != 0; mp = mp->m_next ) { 2429 2430 /* Ignore empty mbuf. */ 2431 len = mp->m_len; 2432 if ( len == 0 ) continue; 2433 2434 /* Find the actual data to send. */ 2435 data = mtod(mp, caddr_t); 2436 2437 /* Finish the last byte. */ 2438 if ( savebyte != NO_PENDING_BYTE ) { 2439 outw( addr_bmpr8, savebyte | ( *data << 8 ) ); 2440 data++; 2441 len--; 2442 savebyte = NO_PENDING_BYTE; 2443 } 2444 2445 /* output contiguous words */ 2446 if (len > 1) { 2447 outsw( addr_bmpr8, data, len >> 1); 2448 data += len & ~1; 2449 len &= 1; 2450 } 2451 2452 /* Save a remaining byte, if there is one. */ 2453 if ( len > 0 ) { 2454 savebyte = *data; 2455 } 2456 } 2457 2458 /* Spit the last byte, if the length is odd. */ 2459 if ( savebyte != NO_PENDING_BYTE ) { 2460 outw( addr_bmpr8, savebyte ); 2461 } 2462 2463#if ! FE_DELAYED_PADDING 2464 /* 2465 * Pad the packet to the minimum length if necessary. 2466 */ 2467 pad = ( ETHER_MIN_LEN >> 1 ) - ( length >> 1 ); 2468 while ( --pad >= 0 ) { 2469 outw( addr_bmpr8, 0 ); 2470 } 2471#endif 2472} 2473 2474/* 2475 * Compute hash value for an Ethernet address 2476 */ 2477static int 2478fe_hash ( u_char * ep ) 2479{ 2480#define FE_HASH_MAGIC_NUMBER 0xEDB88320L 2481 2482 u_long hash = 0xFFFFFFFFL; 2483 int i, j; 2484 u_char b; 2485 u_long m; 2486 2487 for ( i = ETHER_ADDR_LEN; --i >= 0; ) { 2488 b = *ep++; 2489 for ( j = 8; --j >= 0; ) { 2490 m = hash; 2491 hash >>= 1; 2492 if ( ( m ^ b ) & 1 ) hash ^= FE_HASH_MAGIC_NUMBER; 2493 b >>= 1; 2494 } 2495 } 2496 return ( ( int )( hash >> 26 ) ); 2497} 2498 2499/* 2500 * Compute the multicast address filter from the 2501 * list of multicast addresses we need to listen to. 2502 */ 2503static struct fe_filter 2504fe_mcaf ( struct fe_softc *sc ) 2505{ 2506 int index; 2507 struct fe_filter filter; 2508 struct ether_multi *enm; 2509 struct ether_multistep step; 2510 2511 filter = fe_filter_nothing; 2512 ETHER_FIRST_MULTI(step, &sc->arpcom, enm); 2513 while ( enm != NULL) { 2514 if ( bcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN) ) { 2515 return ( fe_filter_all ); 2516 } 2517 index = fe_hash( enm->enm_addrlo ); 2518#if FE_DEBUG >= 4 2519 log( LOG_INFO, "fe%d: hash(%6D) == %d\n", 2520 sc->sc_unit, enm->enm_addrlo , ":", index ); 2521#endif 2522 2523 filter.data[index >> 3] |= 1 << (index & 7); 2524 ETHER_NEXT_MULTI(step, enm); 2525 } 2526 return ( filter ); 2527} 2528 2529/* 2530 * Calculate a new "multicast packet filter" and put the 86960 2531 * receiver in appropriate mode. 2532 */ 2533static void 2534fe_setmode ( struct fe_softc *sc ) 2535{ 2536 int flags = sc->sc_if.if_flags; 2537 2538 /* 2539 * If the interface is not running, we postpone the update 2540 * process for receive modes and multicast address filter 2541 * until the interface is restarted. It reduces some 2542 * complicated job on maintaining chip states. (Earlier versions 2543 * of this driver had a bug on that point...) 2544 * 2545 * To complete the trick, fe_init() calls fe_setmode() after 2546 * restarting the interface. 2547 */ 2548 if ( !( flags & IFF_RUNNING ) ) return; 2549 2550 /* 2551 * Promiscuous mode is handled separately. 2552 */ 2553 if ( flags & IFF_PROMISC ) { 2554 /* 2555 * Program 86960 to receive all packets on the segment 2556 * including those directed to other stations. 2557 * Multicast filter stored in MARs are ignored 2558 * under this setting, so we don't need to update it. 2559 * 2560 * Promiscuous mode in FreeBSD 2 is used solely by 2561 * BPF, and BPF only listens to valid (no error) packets. 2562 * So, we ignore errornous ones even in this mode. 2563 * (Older versions of fe driver mistook the point.) 2564 */ 2565 outb( sc->addr + FE_DLCR5, 2566 sc->proto_dlcr5 | FE_D5_AFM0 | FE_D5_AFM1 ); 2567 sc->filter_change = 0; 2568 2569#if FE_DEBUG >= 3 2570 log( LOG_INFO, "fe%d: promiscuous mode\n", sc->sc_unit ); 2571#endif 2572 return; 2573 } 2574 2575 /* 2576 * Turn the chip to the normal (non-promiscuous) mode. 2577 */ 2578 outb( sc->addr + FE_DLCR5, sc->proto_dlcr5 | FE_D5_AFM1 ); 2579 2580 /* 2581 * Find the new multicast filter value. 2582 * I'm not sure we have to handle modes other than MULTICAST. 2583 * Who sets ALLMULTI? Who turns MULTICAST off? FIXME. 2584 */ 2585 if ( flags & IFF_ALLMULTI ) { 2586 sc->filter = fe_filter_all; 2587 } else if ( flags & IFF_MULTICAST ) { 2588 sc->filter = fe_mcaf( sc ); 2589 } else { 2590 sc->filter = fe_filter_nothing; 2591 } 2592 sc->filter_change = 1; 2593 2594#if FE_DEBUG >= 3 2595 log( LOG_INFO, "fe%d: address filter:" 2596 " [%02x %02x %02x %02x %02x %02x %02x %02x]\n", 2597 sc->sc_unit, 2598 sc->filter.data[0], sc->filter.data[1], 2599 sc->filter.data[2], sc->filter.data[3], 2600 sc->filter.data[4], sc->filter.data[5], 2601 sc->filter.data[6], sc->filter.data[7] ); 2602#endif 2603 2604 /* 2605 * We have to update the multicast filter in the 86960, A.S.A.P. 2606 * 2607 * Note that the DLC (Data Linc Control unit, i.e. transmitter 2608 * and receiver) must be stopped when feeding the filter, and 2609 * DLC trushes all packets in both transmission and receive 2610 * buffers when stopped. 2611 * 2612 * ... Are the above sentenses correct? I have to check the 2613 * manual of the MB86960A. FIXME. 2614 * 2615 * To reduce the packet lossage, we delay the filter update 2616 * process until buffers are empty. 2617 */ 2618 if ( sc->txb_sched == 0 && sc->txb_count == 0 2619 && !( inb( sc->addr + FE_DLCR1 ) & FE_D1_PKTRDY ) ) { 2620 /* 2621 * Buffers are (apparently) empty. Load 2622 * the new filter value into MARs now. 2623 */ 2624 fe_loadmar(sc); 2625 } else { 2626 /* 2627 * Buffers are not empty. Mark that we have to update 2628 * the MARs. The new filter will be loaded by feintr() 2629 * later. 2630 */ 2631#if FE_DEBUG >= 4 2632 log( LOG_INFO, "fe%d: filter change delayed\n", sc->sc_unit ); 2633#endif 2634 } 2635} 2636 2637/* 2638 * Load a new multicast address filter into MARs. 2639 * 2640 * The caller must have splimp'ed befor fe_loadmar. 2641 * This function starts the DLC upon return. So it can be called only 2642 * when the chip is working, i.e., from the driver's point of view, when 2643 * a device is RUNNING. (I mistook the point in previous versions.) 2644 */ 2645static void 2646fe_loadmar ( struct fe_softc * sc ) 2647{ 2648 /* Stop the DLC (transmitter and receiver). */ 2649 outb( sc->addr + FE_DLCR6, sc->proto_dlcr6 | FE_D6_DLC_DISABLE ); 2650 2651 /* Select register bank 1 for MARs. */ 2652 outb( sc->addr + FE_DLCR7, 2653 sc->proto_dlcr7 | FE_D7_RBS_MAR | FE_D7_POWER_UP ); 2654 2655 /* Copy filter value into the registers. */ 2656 outblk( sc->addr + FE_MAR8, sc->filter.data, FE_FILTER_LEN ); 2657 2658 /* Restore the bank selection for BMPRs (i.e., runtime registers). */ 2659 outb( sc->addr + FE_DLCR7, 2660 sc->proto_dlcr7 | FE_D7_RBS_BMPR | FE_D7_POWER_UP ); 2661 2662 /* Restart the DLC. */ 2663 outb( sc->addr + FE_DLCR6, sc->proto_dlcr6 | FE_D6_DLC_ENABLE ); 2664 2665 /* We have just updated the filter. */ 2666 sc->filter_change = 0; 2667 2668#if FE_DEBUG >= 3 2669 log( LOG_INFO, "fe%d: address filter changed\n", sc->sc_unit ); 2670#endif 2671} 2672
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2683/*
2684 * Copy the physical (Ethernet) address into the "data link" address
2685 * entry of the address list for an interface.
2686 * This is (said to be) useful for netstat(1) to keep track of which
2687 * interface is which.
2688 *
2689 * What I'm not sure on this function is, why this is a driver's function.
2690 * Probably this should be moved to somewhere independent to a specific
2691 * hardware, such as if_ehtersubr.c. FIXME.
2692 */
2693static void
2694fe_setlinkaddr ( struct fe_softc * sc )
2695{
2696 struct ifaddr *ifa;
2697 struct sockaddr_dl * sdl;
2698
2699 /*
2700 * Search down the ifa address list looking for the AF_LINK type entry.
2701 */
2702 for ( ifa = sc->sc_if.if_addrlist; ifa != NULL; ifa = ifa->ifa_next ) {
2703 if ( ifa->ifa_addr != NULL
2704 && ifa->ifa_addr->sa_family == AF_LINK ) {
2705
2706 /*
2707 * We have found an AF_LINK type entry.
2708 * Fill in the link-level address for this interface
2709 */
2710 sdl = (struct sockaddr_dl *) ifa->ifa_addr;
2711 sdl->sdl_type = IFT_ETHER;
2712 sdl->sdl_alen = ETHER_ADDR_LEN;
2713 sdl->sdl_slen = 0;
2714 bcopy(sc->sc_enaddr, LLADDR(sdl), ETHER_ADDR_LEN);
2715#if FE_DEBUG >= 3
2716 log( LOG_INFO, "fe%d: link address set\n",
2717 sc->sc_unit );
2718#endif
2719 return;
2720 }
2721 }
2722}
2723
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2673#if FE_DEBUG >= 1 2674static void 2675fe_dump ( int level, struct fe_softc * sc, char * message ) 2676{ 2677 log( level, "fe%d: %s," 2678 " DLCR = %02x %02x %02x %02x %02x %02x %02x %02x," 2679 " BMPR = xx xx %02x %02x %02x %02x %02x %02x," 2680 " asic = %02x %02x %02x %02x %02x %02x %02x %02x" 2681 " + %02x %02x %02x %02x %02x %02x %02x %02x\n", 2682 sc->sc_unit, message ? message : "registers", 2683 inb( sc->addr + FE_DLCR0 ), inb( sc->addr + FE_DLCR1 ), 2684 inb( sc->addr + FE_DLCR2 ), inb( sc->addr + FE_DLCR3 ), 2685 inb( sc->addr + FE_DLCR4 ), inb( sc->addr + FE_DLCR5 ), 2686 inb( sc->addr + FE_DLCR6 ), inb( sc->addr + FE_DLCR7 ), 2687 inb( sc->addr + FE_BMPR10 ), inb( sc->addr + FE_BMPR11 ), 2688 inb( sc->addr + FE_BMPR12 ), inb( sc->addr + FE_BMPR13 ), 2689 inb( sc->addr + FE_BMPR14 ), inb( sc->addr + FE_BMPR15 ), 2690 inb( sc->addr + 0x10 ), inb( sc->addr + 0x11 ), 2691 inb( sc->addr + 0x12 ), inb( sc->addr + 0x13 ), 2692 inb( sc->addr + 0x14 ), inb( sc->addr + 0x15 ), 2693 inb( sc->addr + 0x16 ), inb( sc->addr + 0x17 ), 2694 inb( sc->addr + 0x18 ), inb( sc->addr + 0x19 ), 2695 inb( sc->addr + 0x1A ), inb( sc->addr + 0x1B ), 2696 inb( sc->addr + 0x1C ), inb( sc->addr + 0x1D ), 2697 inb( sc->addr + 0x1E ), inb( sc->addr + 0x1F ) ); 2698} 2699#endif
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