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sys/dev/cs/if_cs.c
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1 /*- 2 * Copyright (c) 1997,1998 Maxim Bolotin and Oleg Sharoiko. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 /* 33 * 34 * Device driver for Crystal Semiconductor CS8920 based ethernet 35 * adapters. By Maxim Bolotin and Oleg Sharoiko, 27-April-1997 36 */ 37 38 /* 39 #define CS_DEBUG 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/malloc.h> 45 #include <sys/mbuf.h> 46 #include <sys/socket.h> 47 #include <sys/sockio.h> 48 #include <sys/kernel.h> 49 #include <sys/sysctl.h> 50 #include <sys/syslog.h> 51 52 #include <sys/module.h> 53 #include <sys/bus.h> 54 #include <machine/bus.h> 55 #include <sys/rman.h> 56 #include <machine/resource.h> 57 58 #include <net/if.h> 59 #include <net/if_arp.h> 60 #include <net/if_media.h> 61 #include <net/ethernet.h> 62 #include <net/bpf.h> 63 64 #include <dev/cs/if_csvar.h> 65 #include <dev/cs/if_csreg.h> 66 67 #ifdef CS_USE_64K_DMA 68 #define CS_DMA_BUFFER_SIZE 65536 69 #else 70 #define CS_DMA_BUFFER_SIZE 16384 71 #endif 72 73 static void cs_init(void *); 74 static int cs_ioctl(struct ifnet *, u_long, caddr_t); 75 static void cs_start(struct ifnet *); 76 static void cs_stop(struct cs_softc *); 77 static void cs_reset(struct cs_softc *); 78 static void cs_watchdog(struct ifnet *); 79 80 static int cs_mediachange(struct ifnet *); 81 static void cs_mediastatus(struct ifnet *, struct ifmediareq *); 82 static int cs_mediaset(struct cs_softc *, int); 83 84 static void cs_write_mbufs(struct cs_softc*, struct mbuf*); 85 static void cs_xmit_buf(struct cs_softc*); 86 static int cs_get_packet(struct cs_softc*); 87 static void cs_setmode(struct cs_softc*); 88 89 static int get_eeprom_data(struct cs_softc *sc, int, int, uint16_t *); 90 static int get_eeprom_cksum(int, int, uint16_t *); 91 static int wait_eeprom_ready( struct cs_softc *); 92 static void control_dc_dc( struct cs_softc *, int ); 93 static int send_test_pkt( struct cs_softc * ); 94 static int enable_tp(struct cs_softc *); 95 static int enable_aui(struct cs_softc *); 96 static int enable_bnc(struct cs_softc *); 97 static int cs_duplex_auto(struct cs_softc *); 98 99 devclass_t cs_devclass; 100 101 /* sysctl vars */ 102 SYSCTL_NODE(_hw, OID_AUTO, cs, CTLFLAG_RD, 0, "cs device parameters"); 103 104 int cs_debug = 0; 105 TUNABLE_INT("hw.cs.debug", &cs_debug); 106 SYSCTL_INT(_hw_cs, OID_AUTO, debug, CTLFLAG_RW, 107 &cs_debug, 0, 108 "cs debug"); 109 110 int cs_ignore_cksum_failure = 0; 111 TUNABLE_INT("hw.cs.ignore_checksum_failure", &cs_ignore_cksum_failure); 112 SYSCTL_INT(_hw_cs, OID_AUTO, ignore_checksum_failure, CTLFLAG_RW, 113 &cs_ignore_cksum_failure, 0, 114 "ignore checksum errors in cs card EEPROM"); 115 116 static int cs_recv_delay = 570; 117 TUNABLE_INT("hw.cs.recv_delay", &cs_recv_delay); 118 SYSCTL_INT(_hw_cs, OID_AUTO, recv_delay, CTLFLAG_RW, &cs_recv_delay, 570, ""); 119 120 static int 121 get_eeprom_data(struct cs_softc *sc, int off, int len, uint16_t *buffer) 122 { 123 int i; 124 125 #ifdef CS_DEBUG 126 printf(CS_NAME":EEPROM data from %x for %x:\n", off, len); 127 #endif 128 129 for (i=0; i < len; i++) { 130 if (wait_eeprom_ready(sc) < 0) 131 return (-1); 132 /* Send command to EEPROM to read */ 133 cs_writereg(sc, PP_EECMD, (off + i) | EEPROM_READ_CMD); 134 if (wait_eeprom_ready(sc) < 0) 135 return (-1); 136 buffer[i] = cs_readreg(sc, PP_EEData); 137 138 #ifdef CS_DEBUG 139 printf("%02x %02x ",(unsigned char)buffer[i], 140 (unsigned char)buffer[i] >> 8); 141 #endif 142 } 143 144 #ifdef CS_DEBUG 145 printf("\n"); 146 #endif 147 return (0); 148 } 149 150 static int 151 get_eeprom_cksum(int off, int len, uint16_t *buffer) 152 { 153 int i; 154 uint16_t cksum=0; 155 156 for (i = 0; i < len; i++) 157 cksum += buffer[i]; 158 cksum &= 0xffff; 159 if (cksum==0) 160 return (0); 161 if (cs_ignore_cksum_failure) { 162 printf(CS_NAME": checksum mismatch, ignoring\n"); 163 return (0); 164 } 165 return (-1); 166 } 167 168 static int 169 wait_eeprom_ready(struct cs_softc *sc) 170 { 171 DELAY(30000); /* XXX should we do some checks here ? */ 172 return (0); 173 } 174 175 static void 176 control_dc_dc(struct cs_softc *sc, int on_not_off) 177 { 178 unsigned int self_control = HCB1_ENBL; 179 180 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0) ^ on_not_off) 181 self_control |= HCB1; 182 else 183 self_control &= ~HCB1; 184 cs_writereg(sc, PP_SelfCTL, self_control); 185 186 DELAY(500000); 187 } 188 189 190 static int 191 cs_duplex_auto(struct cs_softc *sc) 192 { 193 int i, error=0; 194 195 cs_writereg(sc, PP_AutoNegCTL, 196 RE_NEG_NOW | ALLOW_FDX | AUTO_NEG_ENABLE); 197 for (i=0; cs_readreg(sc, PP_AutoNegST) & AUTO_NEG_BUSY; i++) { 198 if (i > 40000) { 199 if_printf(&sc->arpcom.ac_if, 200 "full/half duplex auto negotiation timeout\n"); 201 error = ETIMEDOUT; 202 break; 203 } 204 DELAY(1000); 205 } 206 DELAY(1000000); 207 return (error); 208 } 209 210 static int 211 enable_tp(struct cs_softc *sc) 212 { 213 214 cs_writereg(sc, PP_LineCTL, sc->line_ctl & ~AUI_ONLY); 215 control_dc_dc(sc, 0); 216 DELAY( 150000 ); 217 218 if ((cs_readreg(sc, PP_LineST) & LINK_OK)==0) { 219 if_printf(&sc->arpcom.ac_if, "failed to enable TP\n"); 220 return (EINVAL); 221 } 222 223 return (0); 224 } 225 226 /* 227 * XXX This was rewritten from Linux driver without any tests. 228 */ 229 static int 230 send_test_pkt(struct cs_softc *sc) 231 { 232 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0, 233 0, 46, /* A 46 in network order */ 234 0, 0, /* DSAP=0 & SSAP=0 fields */ 235 0xf3, 0 /* Control (Test Req + P bit set) */ }; 236 int i; 237 u_char ether_address_backup[ETHER_ADDR_LEN]; 238 239 for (i = 0; i < ETHER_ADDR_LEN; i++) 240 ether_address_backup[i] = sc->arpcom.ac_enaddr[i]; 241 242 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_TX_ON); 243 bcopy(test_packet, sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 244 bcopy(test_packet+ETHER_ADDR_LEN, 245 sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 246 cs_outw(sc, TX_CMD_PORT, sc->send_cmd); 247 cs_outw(sc, TX_LEN_PORT, sizeof(test_packet)); 248 249 /* Wait for chip to allocate memory */ 250 DELAY(50000); 251 if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) { 252 for (i = 0; i < ETHER_ADDR_LEN; i++) 253 sc->arpcom.ac_enaddr[i] = ether_address_backup[i]; 254 return (0); 255 } 256 257 outsw(sc->nic_addr + TX_FRAME_PORT, test_packet, sizeof(test_packet)); 258 259 DELAY(30000); 260 261 for (i = 0; i < ETHER_ADDR_LEN; i++) 262 sc->arpcom.ac_enaddr[i] = ether_address_backup[i]; 263 if ((cs_readreg(sc, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) 264 return (1); 265 return (0); 266 } 267 268 /* 269 * XXX This was rewritten from Linux driver without any tests. 270 */ 271 static int 272 enable_aui(struct cs_softc *sc) 273 { 274 275 control_dc_dc(sc, 0); 276 cs_writereg(sc, PP_LineCTL, 277 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY); 278 279 if (!send_test_pkt(sc)) { 280 if_printf(&sc->arpcom.ac_if, "failed to enable AUI\n"); 281 return (EINVAL); 282 } 283 return (0); 284 } 285 286 /* 287 * XXX This was rewritten from Linux driver without any tests. 288 */ 289 static int 290 enable_bnc(struct cs_softc *sc) 291 { 292 293 control_dc_dc(sc, 1); 294 cs_writereg(sc, PP_LineCTL, 295 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY); 296 297 if (!send_test_pkt(sc)) { 298 if_printf(&sc->arpcom.ac_if, "failed to enable BNC\n"); 299 return (EINVAL); 300 } 301 return (0); 302 } 303 304 int 305 cs_cs89x0_probe(device_t dev) 306 { 307 int i; 308 int error; 309 u_long irq, junk; 310 struct cs_softc *sc = device_get_softc(dev); 311 unsigned rev_type = 0; 312 uint16_t id; 313 char chip_revision; 314 uint16_t eeprom_buff[CHKSUM_LEN]; 315 int chip_type, pp_isaint, pp_isadma; 316 317 error = cs_alloc_port(dev, 0, CS_89x0_IO_PORTS); 318 if (error) 319 return (error); 320 321 sc->nic_addr = rman_get_start(sc->port_res); 322 323 if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG) { 324 /* Chip not detected. Let's try to reset it */ 325 if (bootverbose) 326 device_printf(dev, "trying to reset the chip.\n"); 327 cs_outw(sc, ADD_PORT, PP_SelfCTL); 328 i = cs_inw(sc, DATA_PORT); 329 cs_outw(sc, ADD_PORT, PP_SelfCTL); 330 cs_outw(sc, DATA_PORT, i | POWER_ON_RESET); 331 if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG) 332 return (ENXIO); 333 } 334 335 for (i = 0; i < 10000; i++) { 336 id = cs_readreg(sc, PP_ChipID); 337 if (id == CHIP_EISA_ID_SIG) 338 break; 339 } 340 if (i == 10000) 341 return (ENXIO); 342 343 rev_type = cs_readreg(sc, PRODUCT_ID_ADD); 344 chip_type = rev_type & ~REVISON_BITS; 345 chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A'; 346 347 sc->chip_type = chip_type; 348 349 if(chip_type==CS8900) { 350 pp_isaint = PP_CS8900_ISAINT; 351 pp_isadma = PP_CS8900_ISADMA; 352 sc->send_cmd = TX_CS8900_AFTER_ALL; 353 } else { 354 pp_isaint = PP_CS8920_ISAINT; 355 pp_isadma = PP_CS8920_ISADMA; 356 sc->send_cmd = TX_CS8920_AFTER_ALL; 357 } 358 359 /* 360 * Clear some fields so that fail of EEPROM will left them clean 361 */ 362 sc->auto_neg_cnf = 0; 363 sc->adapter_cnf = 0; 364 sc->isa_config = 0; 365 366 /* 367 * If no interrupt specified (or "?"), use what the board tells us. 368 */ 369 error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk); 370 371 /* 372 * Get data from EEPROM 373 */ 374 if((cs_readreg(sc, PP_SelfST) & EEPROM_PRESENT) == 0) { 375 device_printf(dev, "No EEPROM, assuming defaults.\n"); 376 } else { 377 if (get_eeprom_data(sc,START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) { 378 device_printf(dev, "EEPROM read failed, " 379 "assuming defaults.\n"); 380 } else { 381 if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) { 382 device_printf(dev, "EEPROM cheksum bad, " 383 "assuming defaults.\n"); 384 } else { 385 sc->auto_neg_cnf = 386 eeprom_buff[AUTO_NEG_CNF_OFFSET/2]; 387 sc->adapter_cnf = 388 eeprom_buff[ADAPTER_CNF_OFFSET/2]; 389 sc->isa_config = 390 eeprom_buff[ISA_CNF_OFFSET/2]; 391 392 for (i=0; i<ETHER_ADDR_LEN/2; i++) { 393 sc->arpcom.ac_enaddr[i*2]= 394 eeprom_buff[i]; 395 sc->arpcom.ac_enaddr[i*2+1]= 396 eeprom_buff[i] >> 8; 397 } 398 399 /* 400 * If no interrupt specified, 401 * use what the board tells us. 402 */ 403 if (error) { 404 irq = sc->isa_config & INT_NO_MASK; 405 error = 0; 406 if (chip_type==CS8900) { 407 switch(irq) { 408 case 0: 409 irq=10; 410 break; 411 case 1: 412 irq=11; 413 break; 414 case 2: 415 irq=12; 416 break; 417 case 3: 418 irq=5; 419 break; 420 default: 421 device_printf(dev, "invalid irq in EEPROM.\n"); 422 error=EINVAL; 423 } 424 } else { 425 if (irq>CS8920_NO_INTS) { 426 device_printf(dev, "invalid irq in EEPROM.\n"); 427 error=EINVAL; 428 } 429 } 430 if (!error) 431 bus_set_resource(dev, SYS_RES_IRQ, 0, 432 irq, 1); 433 } 434 } 435 } 436 } 437 438 if (!error) { 439 if (chip_type == CS8900) { 440 switch(irq) { 441 case 5: 442 irq = 3; 443 break; 444 case 10: 445 irq = 0; 446 break; 447 case 11: 448 irq = 1; 449 break; 450 case 12: 451 irq = 2; 452 break; 453 default: 454 error=EINVAL; 455 } 456 } else { 457 if (irq > CS8920_NO_INTS) { 458 error = EINVAL; 459 } 460 } 461 } 462 463 if (!error) { 464 if (!(sc->flags & CS_NO_IRQ)) 465 cs_writereg(sc, pp_isaint, irq); 466 } else { 467 device_printf(dev, "Unknown or invalid irq\n"); 468 return (ENXIO); 469 } 470 471 /* 472 * Temporary disabled 473 * 474 if (drq>0) 475 cs_writereg(sc, pp_isadma, drq); 476 else { 477 device_printf(dev, "incorrect drq\n",); 478 return (0); 479 } 480 */ 481 482 if (bootverbose) 483 device_printf(dev, "CS89%c0%s rev %c media%s%s%s\n", 484 chip_type==CS8900 ? '' : '2', 485 chip_type==CS8920M ? "M" : "", 486 chip_revision, 487 (sc->adapter_cnf & A_CNF_10B_T) ? " TP" : "", 488 (sc->adapter_cnf & A_CNF_AUI) ? " AUI" : "", 489 (sc->adapter_cnf & A_CNF_10B_2) ? " BNC" : ""); 490 491 if ((sc->adapter_cnf & A_CNF_EXTND_10B_2) && 492 (sc->adapter_cnf & A_CNF_LOW_RX_SQUELCH)) 493 sc->line_ctl = LOW_RX_SQUELCH; 494 else 495 sc->line_ctl = 0; 496 497 return (0); 498 } 499 500 /* 501 * Allocate a port resource with the given resource id. 502 */ 503 int cs_alloc_port(device_t dev, int rid, int size) 504 { 505 struct cs_softc *sc = device_get_softc(dev); 506 struct resource *res; 507 508 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 509 0ul, ~0ul, size, RF_ACTIVE); 510 if (res == NULL) 511 return (ENOENT); 512 sc->port_rid = rid; 513 sc->port_res = res; 514 sc->port_used = size; 515 return (0); 516 } 517 518 /* 519 * Allocate a memory resource with the given resource id. 520 */ 521 int cs_alloc_memory(device_t dev, int rid, int size) 522 { 523 struct cs_softc *sc = device_get_softc(dev); 524 struct resource *res; 525 526 res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 527 0ul, ~0ul, size, RF_ACTIVE); 528 if (res == NULL) 529 return (ENOENT); 530 sc->mem_rid = rid; 531 sc->mem_res = res; 532 sc->mem_used = size; 533 return (0); 534 } 535 536 /* 537 * Allocate an irq resource with the given resource id. 538 */ 539 int cs_alloc_irq(device_t dev, int rid, int flags) 540 { 541 struct cs_softc *sc = device_get_softc(dev); 542 struct resource *res; 543 544 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 545 (RF_ACTIVE | flags)); 546 if (res == NULL) 547 return (ENOENT); 548 sc->irq_rid = rid; 549 sc->irq_res = res; 550 return (0); 551 } 552 553 /* 554 * Release all resources 555 */ 556 void cs_release_resources(device_t dev) 557 { 558 struct cs_softc *sc = device_get_softc(dev); 559 560 if (sc->port_res) { 561 bus_release_resource(dev, SYS_RES_IOPORT, 562 sc->port_rid, sc->port_res); 563 sc->port_res = 0; 564 } 565 if (sc->mem_res) { 566 bus_release_resource(dev, SYS_RES_MEMORY, 567 sc->mem_rid, sc->mem_res); 568 sc->mem_res = 0; 569 } 570 if (sc->irq_res) { 571 bus_release_resource(dev, SYS_RES_IRQ, 572 sc->irq_rid, sc->irq_res); 573 sc->irq_res = 0; 574 } 575 } 576 577 /* 578 * Install the interface into kernel networking data structures 579 */ 580 int 581 cs_attach(device_t dev) 582 { 583 int media=0; 584 struct cs_softc *sc = device_get_softc(dev);; 585 struct ifnet *ifp = &(sc->arpcom.ac_if); 586 587 cs_stop( sc ); 588 589 ifp->if_softc=sc; 590 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 591 ifp->if_start=cs_start; 592 ifp->if_ioctl=cs_ioctl; 593 ifp->if_watchdog=cs_watchdog; 594 ifp->if_init=cs_init; 595 ifp->if_snd.ifq_maxlen= IFQ_MAXLEN; 596 /* 597 * MIB DATA 598 */ 599 /* 600 ifp->if_linkmib=&sc->mibdata; 601 ifp->if_linkmiblen=sizeof sc->mibdata; 602 */ 603 604 ifp->if_flags=(IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST | 605 IFF_NEEDSGIANT); 606 607 /* 608 * this code still in progress (DMA support) 609 * 610 611 sc->recv_ring=malloc(CS_DMA_BUFFER_SIZE<<1, M_DEVBUF, M_NOWAIT); 612 if (sc->recv_ring == NULL) { 613 log(LOG_ERR, 614 "%s: Couldn't allocate memory for NIC\n", ifp->if_xname); 615 return(0); 616 } 617 if ((sc->recv_ring-(sc->recv_ring & 0x1FFFF)) 618 < (128*1024-CS_DMA_BUFFER_SIZE)) 619 sc->recv_ring+=16*1024; 620 621 */ 622 623 sc->buffer=malloc(ETHER_MAX_LEN-ETHER_CRC_LEN,M_DEVBUF,M_NOWAIT); 624 if (sc->buffer == NULL) { 625 if_printf(ifp, "Couldn't allocate memory for NIC\n"); 626 return(0); 627 } 628 629 /* 630 * Initialize the media structures. 631 */ 632 ifmedia_init(&sc->media, 0, cs_mediachange, cs_mediastatus); 633 634 if (sc->adapter_cnf & A_CNF_10B_T) { 635 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL); 636 if (sc->chip_type != CS8900) { 637 ifmedia_add(&sc->media, 638 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); 639 ifmedia_add(&sc->media, 640 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); 641 } 642 } 643 644 if (sc->adapter_cnf & A_CNF_10B_2) 645 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_2, 0, NULL); 646 647 if (sc->adapter_cnf & A_CNF_AUI) 648 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_5, 0, NULL); 649 650 if (sc->adapter_cnf & A_CNF_MEDIA) 651 ifmedia_add(&sc->media, IFM_ETHER|IFM_AUTO, 0, NULL); 652 653 /* Set default media from EEPROM */ 654 switch (sc->adapter_cnf & A_CNF_MEDIA_TYPE) { 655 case A_CNF_MEDIA_AUTO: media = IFM_ETHER|IFM_AUTO; break; 656 case A_CNF_MEDIA_10B_T: media = IFM_ETHER|IFM_10_T; break; 657 case A_CNF_MEDIA_10B_2: media = IFM_ETHER|IFM_10_2; break; 658 case A_CNF_MEDIA_AUI: media = IFM_ETHER|IFM_10_5; break; 659 default: 660 if_printf(ifp, "no media, assuming 10baseT\n"); 661 sc->adapter_cnf |= A_CNF_10B_T; 662 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL); 663 if (sc->chip_type != CS8900) { 664 ifmedia_add(&sc->media, 665 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); 666 ifmedia_add(&sc->media, 667 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); 668 } 669 media = IFM_ETHER | IFM_10_T; 670 break; 671 } 672 ifmedia_set(&sc->media, media); 673 cs_mediaset(sc, media); 674 675 ether_ifattach(ifp, sc->arpcom.ac_enaddr); 676 677 return (0); 678 } 679 680 int 681 cs_detach(device_t dev) 682 { 683 struct cs_softc *sc; 684 struct ifnet *ifp; 685 686 sc = device_get_softc(dev); 687 ifp = &sc->arpcom.ac_if; 688 689 cs_stop(sc); 690 ifp->if_flags &= ~IFF_RUNNING; 691 ether_ifdetach(ifp); 692 cs_release_resources(dev); 693 return (0); 694 } 695 696 /* 697 * Initialize the board 698 */ 699 static void 700 cs_init(void *xsc) 701 { 702 struct cs_softc *sc=(struct cs_softc *)xsc; 703 struct ifnet *ifp = &sc->arpcom.ac_if; 704 int i, s, rx_cfg; 705 706 /* 707 * reset whatchdog timer 708 */ 709 ifp->if_timer=0; 710 sc->buf_len = 0; 711 712 s=splimp(); 713 714 /* 715 * Hardware initialization of cs 716 */ 717 718 /* Enable receiver and transmitter */ 719 cs_writereg(sc, PP_LineCTL, 720 cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON); 721 722 /* Configure the receiver mode */ 723 cs_setmode(sc); 724 725 /* 726 * This defines what type of frames will cause interrupts 727 * Bad frames should generate interrupts so that the driver 728 * could track statistics of discarded packets 729 */ 730 rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL | RX_RUNT_ENBL | 731 RX_EXTRA_DATA_ENBL; 732 if (sc->isa_config & STREAM_TRANSFER) 733 rx_cfg |= RX_STREAM_ENBL; 734 cs_writereg(sc, PP_RxCFG, rx_cfg); 735 cs_writereg(sc, PP_TxCFG, TX_LOST_CRS_ENBL | 736 TX_SQE_ERROR_ENBL | TX_OK_ENBL | TX_LATE_COL_ENBL | 737 TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL); 738 cs_writereg(sc, PP_BufCFG, READY_FOR_TX_ENBL | 739 RX_MISS_COUNT_OVRFLOW_ENBL | TX_COL_COUNT_OVRFLOW_ENBL | 740 TX_UNDERRUN_ENBL /*| RX_DMA_ENBL*/); 741 742 /* Write MAC address into IA filter */ 743 for (i=0; i<ETHER_ADDR_LEN/2; i++) 744 cs_writereg(sc, PP_IA + i * 2, 745 sc->arpcom.ac_enaddr[i * 2] | 746 (sc->arpcom.ac_enaddr[i * 2 + 1] << 8) ); 747 748 /* 749 * Now enable everything 750 */ 751 /* 752 #ifdef CS_USE_64K_DMA 753 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ | RX_DMA_SIZE_64K); 754 #else 755 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ); 756 #endif 757 */ 758 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ); 759 760 /* 761 * Set running and clear output active flags 762 */ 763 sc->arpcom.ac_if.if_flags |= IFF_RUNNING; 764 sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE; 765 766 /* 767 * Start sending process 768 */ 769 cs_start(ifp); 770 771 (void) splx(s); 772 } 773 774 /* 775 * Get the packet from the board and send it to the upper layer. 776 */ 777 static int 778 cs_get_packet(struct cs_softc *sc) 779 { 780 struct ifnet *ifp = &(sc->arpcom.ac_if); 781 int iobase = sc->nic_addr, status, length; 782 struct ether_header *eh; 783 struct mbuf *m; 784 785 #ifdef CS_DEBUG 786 int i; 787 #endif 788 789 status = cs_inw(sc, RX_FRAME_PORT); 790 length = cs_inw(sc, RX_FRAME_PORT); 791 792 #ifdef CS_DEBUG 793 if_printf(ifp, "rcvd: stat %x, len %d\n", 794 status, length); 795 #endif 796 797 if (!(status & RX_OK)) { 798 #ifdef CS_DEBUG 799 if_printf(ifp, "bad pkt stat %x\n", status); 800 #endif 801 ifp->if_ierrors++; 802 return (-1); 803 } 804 805 MGETHDR(m, M_DONTWAIT, MT_DATA); 806 if (m==NULL) 807 return (-1); 808 809 if (length > MHLEN) { 810 MCLGET(m, M_DONTWAIT); 811 if (!(m->m_flags & M_EXT)) { 812 m_freem(m); 813 return (-1); 814 } 815 } 816 817 /* Initialize packet's header info */ 818 m->m_pkthdr.rcvif = ifp; 819 m->m_pkthdr.len = length; 820 m->m_len = length; 821 822 /* Get the data */ 823 insw(iobase + RX_FRAME_PORT, m->m_data, (length+1)>>1); 824 825 eh = mtod(m, struct ether_header *); 826 827 #ifdef CS_DEBUG 828 for (i=0;i<length;i++) 829 printf(" %02x",(unsigned char)*((char *)(m->m_data+i))); 830 printf( "\n" ); 831 #endif 832 833 if (status & (RX_IA | RX_BROADCAST) || 834 (ifp->if_flags & IFF_MULTICAST && status & RX_HASHED)) { 835 /* Feed the packet to the upper layer */ 836 (*ifp->if_input)(ifp, m); 837 ifp->if_ipackets++; 838 if (length == ETHER_MAX_LEN-ETHER_CRC_LEN) 839 DELAY(cs_recv_delay); 840 } else { 841 m_freem(m); 842 } 843 844 return (0); 845 } 846 847 /* 848 * Handle interrupts 849 */ 850 void 851 csintr(void *arg) 852 { 853 struct cs_softc *sc = (struct cs_softc*) arg; 854 struct ifnet *ifp = &(sc->arpcom.ac_if); 855 int status; 856 857 #ifdef CS_DEBUG 858 if_printf(ifp, "Interrupt.\n"); 859 #endif 860 861 while ((status=cs_inw(sc, ISQ_PORT))) { 862 863 #ifdef CS_DEBUG 864 if_printf(ifp, "from ISQ: %04x\n", status); 865 #endif 866 867 switch (status & ISQ_EVENT_MASK) { 868 case ISQ_RECEIVER_EVENT: 869 cs_get_packet(sc); 870 break; 871 872 case ISQ_TRANSMITTER_EVENT: 873 if (status & TX_OK) 874 ifp->if_opackets++; 875 else 876 ifp->if_oerrors++; 877 ifp->if_flags &= ~IFF_OACTIVE; 878 ifp->if_timer = 0; 879 break; 880 881 case ISQ_BUFFER_EVENT: 882 if (status & READY_FOR_TX) { 883 ifp->if_flags &= ~IFF_OACTIVE; 884 ifp->if_timer = 0; 885 } 886 887 if (status & TX_UNDERRUN) { 888 ifp->if_flags &= ~IFF_OACTIVE; 889 ifp->if_timer = 0; 890 ifp->if_oerrors++; 891 } 892 break; 893 894 case ISQ_RX_MISS_EVENT: 895 ifp->if_ierrors+=(status>>6); 896 break; 897 898 case ISQ_TX_COL_EVENT: 899 ifp->if_collisions+=(status>>6); 900 break; 901 } 902 } 903 904 if (!(ifp->if_flags & IFF_OACTIVE)) { 905 cs_start(ifp); 906 } 907 } 908 909 /* 910 * Save the data in buffer 911 */ 912 913 static void 914 cs_write_mbufs( struct cs_softc *sc, struct mbuf *m ) 915 { 916 int len; 917 struct mbuf *mp; 918 unsigned char *data, *buf; 919 920 for (mp=m, buf=sc->buffer, sc->buf_len=0; mp != NULL; mp=mp->m_next) { 921 len = mp->m_len; 922 923 /* 924 * Ignore empty parts 925 */ 926 if (!len) 927 continue; 928 929 /* 930 * Find actual data address 931 */ 932 data = mtod(mp, caddr_t); 933 934 bcopy((caddr_t) data, (caddr_t) buf, len); 935 buf += len; 936 sc->buf_len += len; 937 } 938 } 939 940 941 static void 942 cs_xmit_buf( struct cs_softc *sc ) 943 { 944 outsw(sc->nic_addr+TX_FRAME_PORT, sc->buffer, (sc->buf_len+1)>>1); 945 sc->buf_len = 0; 946 } 947 948 static void 949 cs_start(struct ifnet *ifp) 950 { 951 int s, length; 952 struct mbuf *m, *mp; 953 struct cs_softc *sc = ifp->if_softc; 954 955 s = splimp(); 956 957 for (;;) { 958 if (sc->buf_len) 959 length = sc->buf_len; 960 else { 961 IF_DEQUEUE( &ifp->if_snd, m ); 962 963 if (m==NULL) { 964 (void) splx(s); 965 return; 966 } 967 968 for (length=0, mp=m; mp != NULL; mp=mp->m_next) 969 length += mp->m_len; 970 971 /* Skip zero-length packets */ 972 if (length == 0) { 973 m_freem(m); 974 continue; 975 } 976 977 cs_write_mbufs(sc, m); 978 979 BPF_MTAP(ifp, m); 980 981 m_freem(m); 982 } 983 984 /* 985 * Issue a SEND command 986 */ 987 cs_outw(sc, TX_CMD_PORT, sc->send_cmd); 988 cs_outw(sc, TX_LEN_PORT, length ); 989 990 /* 991 * If there's no free space in the buffer then leave 992 * this packet for the next time: indicate output active 993 * and return. 994 */ 995 if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) { 996 ifp->if_timer = sc->buf_len; 997 (void) splx(s); 998 ifp->if_flags |= IFF_OACTIVE; 999 return; 1000 } 1001 1002 cs_xmit_buf(sc); 1003 1004 /* 1005 * Set the watchdog timer in case we never hear 1006 * from board again. (I don't know about correct 1007 * value for this timeout) 1008 */ 1009 ifp->if_timer = length; 1010 1011 (void) splx(s); 1012 ifp->if_flags |= IFF_OACTIVE; 1013 return; 1014 } 1015 } 1016 1017 /* 1018 * Stop everything on the interface 1019 */ 1020 static void 1021 cs_stop(struct cs_softc *sc) 1022 { 1023 int s = splimp(); 1024 1025 cs_writereg(sc, PP_RxCFG, 0); 1026 cs_writereg(sc, PP_TxCFG, 0); 1027 cs_writereg(sc, PP_BufCFG, 0); 1028 cs_writereg(sc, PP_BusCTL, 0); 1029 1030 sc->arpcom.ac_if.if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 1031 sc->arpcom.ac_if.if_timer = 0; 1032 1033 (void) splx(s); 1034 } 1035 1036 /* 1037 * Reset the interface 1038 */ 1039 static void 1040 cs_reset(struct cs_softc *sc) 1041 { 1042 cs_stop(sc); 1043 cs_init(sc); 1044 } 1045 1046 static void 1047 cs_setmode(struct cs_softc *sc) 1048 { 1049 struct ifnet *ifp = &(sc->arpcom.ac_if); 1050 int rx_ctl; 1051 1052 /* Stop the receiver while changing filters */ 1053 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) & ~SERIAL_RX_ON); 1054 1055 if (ifp->if_flags & IFF_PROMISC) { 1056 /* Turn on promiscuous mode. */ 1057 rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT; 1058 } else { 1059 if (ifp->if_flags & IFF_MULTICAST) { 1060 /* Allow receiving frames with multicast addresses */ 1061 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT | 1062 RX_OK_ACCEPT | RX_MULTCAST_ACCEPT; 1063 /* 1064 * Here the reconfiguration of chip's multicast 1065 * filters should be done but I've no idea about 1066 * hash transformation in this chip. If you can 1067 * add this code or describe me the transformation 1068 * I'd be very glad. 1069 */ 1070 } else { 1071 /* 1072 * Receive only good frames addressed for us and 1073 * good broadcasts. 1074 */ 1075 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT | 1076 RX_OK_ACCEPT; 1077 } 1078 } 1079 1080 /* Set up the filter */ 1081 cs_writereg(sc, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl); 1082 1083 /* Turn on receiver */ 1084 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON); 1085 } 1086 1087 static int 1088 cs_ioctl(register struct ifnet *ifp, u_long command, caddr_t data) 1089 { 1090 struct cs_softc *sc=ifp->if_softc; 1091 struct ifreq *ifr = (struct ifreq *)data; 1092 int s,error=0; 1093 1094 #ifdef CS_DEBUG 1095 if_printf(ifp, "ioctl(%lx)\n", command); 1096 #endif 1097 1098 s=splimp(); 1099 1100 switch (command) { 1101 case SIOCSIFFLAGS: 1102 /* 1103 * Switch interface state between "running" and 1104 * "stopped", reflecting the UP flag. 1105 */ 1106 if (sc->arpcom.ac_if.if_flags & IFF_UP) { 1107 if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)==0) { 1108 cs_init(sc); 1109 } 1110 } else { 1111 if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)!=0) { 1112 cs_stop(sc); 1113 } 1114 } 1115 /* 1116 * Promiscuous and/or multicast flags may have changed, 1117 * so reprogram the multicast filter and/or receive mode. 1118 * 1119 * See note about multicasts in cs_setmode 1120 */ 1121 cs_setmode(sc); 1122 break; 1123 1124 case SIOCADDMULTI: 1125 case SIOCDELMULTI: 1126 /* 1127 * Multicast list has changed; set the hardware filter 1128 * accordingly. 1129 * 1130 * See note about multicasts in cs_setmode 1131 */ 1132 cs_setmode(sc); 1133 error = 0; 1134 break; 1135 1136 case SIOCSIFMEDIA: 1137 case SIOCGIFMEDIA: 1138 error = ifmedia_ioctl(ifp, ifr, &sc->media, command); 1139 break; 1140 1141 default: 1142 error = ether_ioctl(ifp, command, data); 1143 break; 1144 } 1145 1146 (void) splx(s); 1147 return (error); 1148 } 1149 1150 /* 1151 * Device timeout/watchdog routine. Entered if the device neglects to 1152 * generate an interrupt after a transmit has been started on it. 1153 */ 1154 static void 1155 cs_watchdog(struct ifnet *ifp) 1156 { 1157 struct cs_softc *sc = ifp->if_softc; 1158 1159 ifp->if_oerrors++; 1160 log(LOG_ERR, "%s: device timeout\n", ifp->if_xname); 1161 1162 /* Reset the interface */ 1163 if (ifp->if_flags & IFF_UP) 1164 cs_reset(sc); 1165 else 1166 cs_stop(sc); 1167 } 1168 1169 static int 1170 cs_mediachange(struct ifnet *ifp) 1171 { 1172 struct cs_softc *sc = ifp->if_softc; 1173 struct ifmedia *ifm = &sc->media; 1174 1175 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) 1176 return (EINVAL); 1177 1178 return (cs_mediaset(sc, ifm->ifm_media)); 1179 } 1180 1181 static void 1182 cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 1183 { 1184 int line_status; 1185 struct cs_softc *sc = ifp->if_softc; 1186 1187 ifmr->ifm_active = IFM_ETHER; 1188 line_status = cs_readreg(sc, PP_LineST); 1189 if (line_status & TENBASET_ON) { 1190 ifmr->ifm_active |= IFM_10_T; 1191 if (sc->chip_type != CS8900) { 1192 if (cs_readreg(sc, PP_AutoNegST) & FDX_ACTIVE) 1193 ifmr->ifm_active |= IFM_FDX; 1194 if (cs_readreg(sc, PP_AutoNegST) & HDX_ACTIVE) 1195 ifmr->ifm_active |= IFM_HDX; 1196 } 1197 ifmr->ifm_status = IFM_AVALID; 1198 if (line_status & LINK_OK) 1199 ifmr->ifm_status |= IFM_ACTIVE; 1200 } else { 1201 if (line_status & AUI_ON) { 1202 cs_writereg(sc, PP_SelfCTL, cs_readreg(sc, PP_SelfCTL) | 1203 HCB1_ENBL); 1204 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0)^ 1205 (cs_readreg(sc, PP_SelfCTL) & HCB1)) 1206 ifmr->ifm_active |= IFM_10_2; 1207 else 1208 ifmr->ifm_active |= IFM_10_5; 1209 } 1210 } 1211 } 1212 1213 static int 1214 cs_mediaset(struct cs_softc *sc, int media) 1215 { 1216 int error; 1217 1218 /* Stop the receiver & transmitter */ 1219 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) & 1220 ~(SERIAL_RX_ON | SERIAL_TX_ON)); 1221 1222 #ifdef CS_DEBUG 1223 if_printf(&sc->arpcom.ac_if, "cs_setmedia(%x)\n", media); 1224 #endif 1225 1226 switch (IFM_SUBTYPE(media)) { 1227 default: 1228 case IFM_AUTO: 1229 if ((error=enable_tp(sc))==0) 1230 error = cs_duplex_auto(sc); 1231 else if ((error=enable_bnc(sc)) != 0) 1232 error = enable_aui(sc); 1233 break; 1234 case IFM_10_T: 1235 if ((error=enable_tp(sc)) != 0) 1236 break; 1237 if (media & IFM_FDX) 1238 cs_duplex_full(sc); 1239 else if (media & IFM_HDX) 1240 cs_duplex_half(sc); 1241 else 1242 error = cs_duplex_auto(sc); 1243 break; 1244 case IFM_10_2: 1245 error = enable_bnc(sc); 1246 break; 1247 case IFM_10_5: 1248 error = enable_aui(sc); 1249 break; 1250 } 1251 1252 /* 1253 * Turn the transmitter & receiver back on 1254 */ 1255 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | 1256 SERIAL_RX_ON | SERIAL_TX_ON); 1257 1258 return (error); 1259 }
Cache object: edc0fb117ee1dd0a6948f1b1af0f9e8f
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