28 */ 29 30/* 31 * Device driver for National Semiconductor DS8390/WD83C690 based ethernet 32 * adapters. By David Greenman, 29-April-1993 33 * 34 * Currently supports the Western Digital/SMC 8003 and 8013 series, 35 * the SMC Elite Ultra (8216), the 3Com 3c503, the NE1000 and NE2000, 36 * and a variety of similar clones. 37 * 38 */ 39 40#include "opt_ed.h" 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/sockio.h> 45#include <sys/mbuf.h> 46#include <sys/kernel.h> 47#include <sys/socket.h> 48#include <sys/syslog.h> 49 50#include <sys/bus.h> 51 52#include <machine/bus.h> 53#include <sys/rman.h> 54#include <machine/resource.h> 55 56#include <net/ethernet.h> 57#include <net/if.h> 58#include <net/if_arp.h> 59#include <net/if_dl.h> 60#include <net/if_mib.h> 61#include <net/if_media.h> 62 63#ifndef ED_NO_MIIBUS 64#include <dev/mii/mii.h> 65#include <dev/mii/miivar.h> 66#endif 67 68#include <net/bpf.h> 69#include <net/bridge.h> 70 71#include <machine/md_var.h> 72 73#include <dev/ed/if_edreg.h> 74#include <dev/ed/if_edvar.h> 75 76devclass_t ed_devclass; 77 78static void ed_init (void *); 79static int ed_ioctl (struct ifnet *, u_long, caddr_t); 80static void ed_start (struct ifnet *); 81static void ed_reset (struct ifnet *); 82static void ed_watchdog (struct ifnet *); 83#ifndef ED_NO_MIIBUS 84static void ed_tick (void *); 85#endif 86 87static void ds_getmcaf (struct ed_softc *, u_int32_t *); 88 89static void ed_get_packet (struct ed_softc *, char *, /* u_short */ int); 90 91static __inline void ed_rint (struct ed_softc *); 92static __inline void ed_xmit (struct ed_softc *); 93static __inline char * ed_ring_copy(struct ed_softc *, char *, char *, 94 /* u_short */ int); 95static void ed_hpp_set_physical_link(struct ed_softc *); 96static void ed_hpp_readmem (struct ed_softc *, int, unsigned char *, 97 /* u_short */ int); 98static void ed_hpp_writemem (struct ed_softc *, unsigned char *, 99 /* u_short */ int, /* u_short */ int); 100static u_short ed_hpp_write_mbufs(struct ed_softc *, struct mbuf *, int); 101 102static u_short ed_pio_write_mbufs(struct ed_softc *, struct mbuf *, int); 103 104static void ed_setrcr (struct ed_softc *); 105 106static u_int32_t ds_crc (u_char *ep); 107 108/* 109 * Interrupt conversion table for WD/SMC ASIC/83C584 110 */ 111static unsigned short ed_intr_val[] = { 112 9, 113 3, 114 5, 115 7, 116 10, 117 11, 118 15, 119 4 120}; 121 122/* 123 * Interrupt conversion table for 83C790 124 */ 125static unsigned short ed_790_intr_val[] = { 126 0, 127 9, 128 3, 129 5, 130 7, 131 10, 132 11, 133 15 134}; 135 136/* 137 * Interrupt conversion table for the HP PC LAN+ 138 */ 139 140static unsigned short ed_hpp_intr_val[] = { 141 0, /* 0 */ 142 0, /* 1 */ 143 0, /* 2 */ 144 3, /* 3 */ 145 4, /* 4 */ 146 5, /* 5 */ 147 6, /* 6 */ 148 7, /* 7 */ 149 0, /* 8 */ 150 9, /* 9 */ 151 10, /* 10 */ 152 11, /* 11 */ 153 12, /* 12 */ 154 0, /* 13 */ 155 0, /* 14 */ 156 15 /* 15 */ 157}; 158 159/* 160 * Generic probe routine for testing for the existance of a DS8390. 161 * Must be called after the NIC has just been reset. This routine 162 * works by looking at certain register values that are guaranteed 163 * to be initialized a certain way after power-up or reset. Seems 164 * not to currently work on the 83C690. 165 * 166 * Specifically: 167 * 168 * Register reset bits set bits 169 * Command Register (CR) TXP, STA RD2, STP 170 * Interrupt Status (ISR) RST 171 * Interrupt Mask (IMR) All bits 172 * Data Control (DCR) LAS 173 * Transmit Config. (TCR) LB1, LB0 174 * 175 * We only look at the CR and ISR registers, however, because looking at 176 * the others would require changing register pages (which would be 177 * intrusive if this isn't an 8390). 178 * 179 * Return 1 if 8390 was found, 0 if not. 180 */ 181 182int 183ed_probe_generic8390(sc) 184 struct ed_softc *sc; 185{ 186 if ((ed_nic_inb(sc, ED_P0_CR) & 187 (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) != 188 (ED_CR_RD2 | ED_CR_STP)) 189 return (0); 190 if ((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RST) != ED_ISR_RST) 191 return (0); 192 193 return (1); 194} 195 196/* 197 * Probe and vendor-specific initialization routine for SMC/WD80x3 boards 198 */ 199int 200ed_probe_WD80x3_generic(dev, flags, intr_vals) 201 device_t dev; 202 int flags; 203 unsigned short *intr_vals[]; 204{ 205 struct ed_softc *sc = device_get_softc(dev); 206 int error; 207 int i; 208 u_int memsize, maddr; 209 u_char iptr, isa16bit, sum, totalsum; 210 u_long conf_maddr, conf_msize, irq, junk; 211 212 sc->chip_type = ED_CHIP_TYPE_DP8390; 213 214 if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_TOSH_ETHER) { 215 totalsum = ED_WD_ROM_CHECKSUM_TOTAL_TOSH_ETHER; 216 ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_POW); 217 DELAY(10000); 218 } 219 else 220 totalsum = ED_WD_ROM_CHECKSUM_TOTAL; 221 222 /* 223 * Attempt to do a checksum over the station address PROM. If it 224 * fails, it's probably not a SMC/WD board. There is a problem with 225 * this, though: some clone WD boards don't pass the checksum test. 226 * Danpex boards for one. 227 */ 228 for (sum = 0, i = 0; i < 8; ++i) 229 sum += ed_asic_inb(sc, ED_WD_PROM + i); 230 231 if (sum != totalsum) { 232 233 /* 234 * Checksum is invalid. This often happens with cheap WD8003E 235 * clones. In this case, the checksum byte (the eighth byte) 236 * seems to always be zero. 237 */ 238 if (ed_asic_inb(sc, ED_WD_CARD_ID) != ED_TYPE_WD8003E || 239 ed_asic_inb(sc, ED_WD_PROM + 7) != 0) 240 return (ENXIO); 241 } 242 /* reset card to force it into a known state. */ 243 if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_TOSH_ETHER) 244 ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_RST | ED_WD_MSR_POW); 245 else 246 ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_RST); 247 248 DELAY(100); 249 ed_asic_outb(sc, ED_WD_MSR, ed_asic_inb(sc, ED_WD_MSR) & ~ED_WD_MSR_RST); 250 /* wait in the case this card is reading its EEROM */ 251 DELAY(5000); 252 253 sc->vendor = ED_VENDOR_WD_SMC; 254 sc->type = ed_asic_inb(sc, ED_WD_CARD_ID); 255 256 /* 257 * Set initial values for width/size. 258 */ 259 memsize = 8192; 260 isa16bit = 0; 261 switch (sc->type) { 262 case ED_TYPE_WD8003S: 263 sc->type_str = "WD8003S"; 264 break; 265 case ED_TYPE_WD8003E: 266 sc->type_str = "WD8003E"; 267 break; 268 case ED_TYPE_WD8003EB: 269 sc->type_str = "WD8003EB"; 270 break; 271 case ED_TYPE_WD8003W: 272 sc->type_str = "WD8003W"; 273 break; 274 case ED_TYPE_WD8013EBT: 275 sc->type_str = "WD8013EBT"; 276 memsize = 16384; 277 isa16bit = 1; 278 break; 279 case ED_TYPE_WD8013W: 280 sc->type_str = "WD8013W"; 281 memsize = 16384; 282 isa16bit = 1; 283 break; 284 case ED_TYPE_WD8013EP: /* also WD8003EP */ 285 if (ed_asic_inb(sc, ED_WD_ICR) & ED_WD_ICR_16BIT) { 286 isa16bit = 1; 287 memsize = 16384; 288 sc->type_str = "WD8013EP"; 289 } else { 290 sc->type_str = "WD8003EP"; 291 } 292 break; 293 case ED_TYPE_WD8013WC: 294 sc->type_str = "WD8013WC"; 295 memsize = 16384; 296 isa16bit = 1; 297 break; 298 case ED_TYPE_WD8013EBP: 299 sc->type_str = "WD8013EBP"; 300 memsize = 16384; 301 isa16bit = 1; 302 break; 303 case ED_TYPE_WD8013EPC: 304 sc->type_str = "WD8013EPC"; 305 memsize = 16384; 306 isa16bit = 1; 307 break; 308 case ED_TYPE_SMC8216C: /* 8216 has 16K shared mem -- 8416 has 8K */ 309 case ED_TYPE_SMC8216T: 310 if (sc->type == ED_TYPE_SMC8216C) { 311 sc->type_str = "SMC8216/SMC8216C"; 312 } else { 313 sc->type_str = "SMC8216T"; 314 } 315 316 ed_asic_outb(sc, ED_WD790_HWR, 317 ed_asic_inb(sc, ED_WD790_HWR) | ED_WD790_HWR_SWH); 318 switch (ed_asic_inb(sc, ED_WD790_RAR) & ED_WD790_RAR_SZ64) { 319 case ED_WD790_RAR_SZ64: 320 memsize = 65536; 321 break; 322 case ED_WD790_RAR_SZ32: 323 memsize = 32768; 324 break; 325 case ED_WD790_RAR_SZ16: 326 memsize = 16384; 327 break; 328 case ED_WD790_RAR_SZ8: 329 /* 8216 has 16K shared mem -- 8416 has 8K */ 330 if (sc->type == ED_TYPE_SMC8216C) { 331 sc->type_str = "SMC8416C/SMC8416BT"; 332 } else { 333 sc->type_str = "SMC8416T"; 334 } 335 memsize = 8192; 336 break; 337 } 338 ed_asic_outb(sc, ED_WD790_HWR, 339 ed_asic_inb(sc, ED_WD790_HWR) & ~ED_WD790_HWR_SWH); 340 341 isa16bit = 1; 342 sc->chip_type = ED_CHIP_TYPE_WD790; 343 break; 344 case ED_TYPE_TOSHIBA1: 345 sc->type_str = "Toshiba1"; 346 memsize = 32768; 347 isa16bit = 1; 348 break; 349 case ED_TYPE_TOSHIBA4: 350 sc->type_str = "Toshiba4"; 351 memsize = 32768; 352 isa16bit = 1; 353 break; 354 default: 355 sc->type_str = ""; 356 break; 357 } 358 359 /* 360 * Make some adjustments to initial values depending on what is found 361 * in the ICR. 362 */ 363 if (isa16bit && (sc->type != ED_TYPE_WD8013EBT) 364 && (sc->type != ED_TYPE_TOSHIBA1) && (sc->type != ED_TYPE_TOSHIBA4) 365 && ((ed_asic_inb(sc, ED_WD_ICR) & ED_WD_ICR_16BIT) == 0)) { 366 isa16bit = 0; 367 memsize = 8192; 368 } 369 370 error = bus_get_resource(dev, SYS_RES_MEMORY, 0, 371 &conf_maddr, &conf_msize); 372 if (error) 373 return (error); 374 375#if ED_DEBUG 376 printf("type = %x type_str=%s isa16bit=%d memsize=%d id_msize=%d\n", 377 sc->type, sc->type_str, isa16bit, memsize, conf_msize); 378 for (i = 0; i < 8; i++) 379 printf("%x -> %x\n", i, ed_asic_inb(sc, i)); 380#endif 381 382 /* 383 * Allow the user to override the autoconfiguration 384 */ 385 if (conf_msize > 1) 386 memsize = conf_msize; 387 388 maddr = conf_maddr; 389 if (maddr < 0xa0000 || maddr + memsize > 0x1000000) { 390 device_printf(dev, "Invalid ISA memory address range configured: 0x%x - 0x%x\n", 391 maddr, maddr + memsize); 392 return (ENXIO); 393 } 394 395 /* 396 * (note that if the user specifies both of the following flags that 397 * '8bit' mode intentionally has precedence) 398 */ 399 if (flags & ED_FLAGS_FORCE_16BIT_MODE) 400 isa16bit = 1; 401 if (flags & ED_FLAGS_FORCE_8BIT_MODE) 402 isa16bit = 0; 403 404 /* 405 * If possible, get the assigned interrupt number from the card and 406 * use it. 407 */ 408 if ((sc->type & ED_WD_SOFTCONFIG) && 409 (sc->chip_type != ED_CHIP_TYPE_WD790)) { 410 411 /* 412 * Assemble together the encoded interrupt number. 413 */ 414 iptr = (ed_asic_inb(sc, ED_WD_ICR) & ED_WD_ICR_IR2) | 415 ((ed_asic_inb(sc, ED_WD_IRR) & 416 (ED_WD_IRR_IR0 | ED_WD_IRR_IR1)) >> 5); 417 418 /* 419 * If no interrupt specified (or "?"), use what the board tells us. 420 */ 421 error = bus_get_resource(dev, SYS_RES_IRQ, 0, 422 &irq, &junk); 423 if (error && intr_vals[0] != NULL) { 424 error = bus_set_resource(dev, SYS_RES_IRQ, 0, 425 intr_vals[0][iptr], 1); 426 } 427 if (error) 428 return (error); 429 430 /* 431 * Enable the interrupt. 432 */ 433 ed_asic_outb(sc, ED_WD_IRR, 434 ed_asic_inb(sc, ED_WD_IRR) | ED_WD_IRR_IEN); 435 } 436 if (sc->chip_type == ED_CHIP_TYPE_WD790) { 437 ed_asic_outb(sc, ED_WD790_HWR, 438 ed_asic_inb(sc, ED_WD790_HWR) | ED_WD790_HWR_SWH); 439 iptr = (((ed_asic_inb(sc, ED_WD790_GCR) & ED_WD790_GCR_IR2) >> 4) | 440 (ed_asic_inb(sc, ED_WD790_GCR) & 441 (ED_WD790_GCR_IR1 | ED_WD790_GCR_IR0)) >> 2); 442 ed_asic_outb(sc, ED_WD790_HWR, 443 ed_asic_inb(sc, ED_WD790_HWR) & ~ED_WD790_HWR_SWH); 444 445 /* 446 * If no interrupt specified (or "?"), use what the board tells us. 447 */ 448 error = bus_get_resource(dev, SYS_RES_IRQ, 0, 449 &irq, &junk); 450 if (error && intr_vals[1] != NULL) { 451 error = bus_set_resource(dev, SYS_RES_IRQ, 0, 452 intr_vals[1][iptr], 1); 453 } 454 if (error) 455 return (error); 456 457 /* 458 * Enable interrupts. 459 */ 460 ed_asic_outb(sc, ED_WD790_ICR, 461 ed_asic_inb(sc, ED_WD790_ICR) | ED_WD790_ICR_EIL); 462 } 463 error = bus_get_resource(dev, SYS_RES_IRQ, 0, 464 &irq, &junk); 465 if (error) { 466 device_printf(dev, "%s cards don't support auto-detected/assigned interrupts.\n", 467 sc->type_str); 468 return (ENXIO); 469 } 470 sc->isa16bit = isa16bit; 471 sc->mem_shared = 1; 472 473 error = ed_alloc_memory(dev, 0, memsize); 474 if (error) { 475 printf("*** ed_alloc_memory() failed! (%d)\n", error); 476 return (error); 477 } 478 sc->mem_start = (caddr_t) rman_get_virtual(sc->mem_res); 479 480 /* 481 * allocate one xmit buffer if < 16k, two buffers otherwise 482 */ 483 if ((memsize < 16384) || 484 (flags & ED_FLAGS_NO_MULTI_BUFFERING)) { 485 sc->txb_cnt = 1; 486 } else { 487 sc->txb_cnt = 2; 488 } 489 sc->tx_page_start = ED_WD_PAGE_OFFSET; 490 sc->rec_page_start = ED_WD_PAGE_OFFSET + ED_TXBUF_SIZE * sc->txb_cnt; 491 sc->rec_page_stop = ED_WD_PAGE_OFFSET + memsize / ED_PAGE_SIZE; 492 sc->mem_ring = sc->mem_start + (ED_PAGE_SIZE * sc->rec_page_start); 493 sc->mem_size = memsize; 494 sc->mem_end = sc->mem_start + memsize; 495 496 /* 497 * Get station address from on-board ROM 498 */ 499 for (i = 0; i < ETHER_ADDR_LEN; ++i) 500 sc->arpcom.ac_enaddr[i] = ed_asic_inb(sc, ED_WD_PROM + i); 501 502 /* 503 * Set upper address bits and 8/16 bit access to shared memory. 504 */ 505 if (isa16bit) { 506 if (sc->chip_type == ED_CHIP_TYPE_WD790) { 507 sc->wd_laar_proto = ed_asic_inb(sc, ED_WD_LAAR); 508 } else { 509 sc->wd_laar_proto = ED_WD_LAAR_L16EN | 510 ((kvtop(sc->mem_start) >> 19) & ED_WD_LAAR_ADDRHI); 511 } 512 /* 513 * Enable 16bit access 514 */ 515 ed_asic_outb(sc, ED_WD_LAAR, sc->wd_laar_proto | 516 ED_WD_LAAR_M16EN); 517 } else { 518 if (((sc->type & ED_WD_SOFTCONFIG) || 519 (sc->type == ED_TYPE_TOSHIBA1) || 520 (sc->type == ED_TYPE_TOSHIBA4) || 521 (sc->type == ED_TYPE_WD8013EBT)) && 522 (sc->chip_type != ED_CHIP_TYPE_WD790)) { 523 sc->wd_laar_proto = (kvtop(sc->mem_start) >> 19) & 524 ED_WD_LAAR_ADDRHI; 525 ed_asic_outb(sc, ED_WD_LAAR, sc->wd_laar_proto); 526 } 527 } 528 529 /* 530 * Set address and enable interface shared memory. 531 */ 532 if (sc->chip_type != ED_CHIP_TYPE_WD790) { 533 if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_TOSH_ETHER) { 534 ed_asic_outb(sc, ED_WD_MSR + 1, 535 ((kvtop(sc->mem_start) >> 8) & 0xe0) | 4); 536 ed_asic_outb(sc, ED_WD_MSR + 2, 537 ((kvtop(sc->mem_start) >> 16) & 0x0f)); 538 ed_asic_outb(sc, ED_WD_MSR, 539 ED_WD_MSR_MENB | ED_WD_MSR_POW); 540 } else { 541 ed_asic_outb(sc, ED_WD_MSR, 542 ((kvtop(sc->mem_start) >> 13) & 543 ED_WD_MSR_ADDR) | ED_WD_MSR_MENB); 544 } 545 sc->cr_proto = ED_CR_RD2; 546 } else { 547 ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_MENB); 548 ed_asic_outb(sc, ED_WD790_HWR, (ed_asic_inb(sc, ED_WD790_HWR) | ED_WD790_HWR_SWH)); 549 ed_asic_outb(sc, ED_WD790_RAR, ((kvtop(sc->mem_start) >> 13) & 0x0f) | 550 ((kvtop(sc->mem_start) >> 11) & 0x40) | 551 (ed_asic_inb(sc, ED_WD790_RAR) & 0xb0)); 552 ed_asic_outb(sc, ED_WD790_HWR, (ed_asic_inb(sc, ED_WD790_HWR) & ~ED_WD790_HWR_SWH)); 553 sc->cr_proto = 0; 554 } 555 556#if 0 557 printf("starting memory performance test at 0x%x, size %d...\n", 558 sc->mem_start, memsize*16384); 559 for (i = 0; i < 16384; i++) 560 bzero(sc->mem_start, memsize); 561 printf("***DONE***\n"); 562#endif 563 564 /* 565 * Now zero memory and verify that it is clear 566 */ 567 bzero(sc->mem_start, memsize); 568 569 for (i = 0; i < memsize; ++i) { 570 if (sc->mem_start[i]) { 571 device_printf(dev, "failed to clear shared memory at %jx - check configuration\n", 572 (uintmax_t)kvtop(sc->mem_start + i)); 573 574 /* 575 * Disable 16 bit access to shared memory 576 */ 577 if (isa16bit) { 578 if (sc->chip_type == ED_CHIP_TYPE_WD790) { 579 ed_asic_outb(sc, ED_WD_MSR, 0x00); 580 } 581 ed_asic_outb(sc, ED_WD_LAAR, sc->wd_laar_proto & 582 ~ED_WD_LAAR_M16EN); 583 } 584 return (ENXIO); 585 } 586 } 587 588 /* 589 * Disable 16bit access to shared memory - we leave it 590 * disabled so that 1) machines reboot properly when the board 591 * is set 16 bit mode and there are conflicting 8bit 592 * devices/ROMS in the same 128k address space as this boards 593 * shared memory. and 2) so that other 8 bit devices with 594 * shared memory can be used in this 128k region, too. 595 */ 596 if (isa16bit) { 597 if (sc->chip_type == ED_CHIP_TYPE_WD790) { 598 ed_asic_outb(sc, ED_WD_MSR, 0x00); 599 } 600 ed_asic_outb(sc, ED_WD_LAAR, sc->wd_laar_proto & 601 ~ED_WD_LAAR_M16EN); 602 } 603 return (0); 604} 605 606int 607ed_probe_WD80x3(dev, port_rid, flags) 608 device_t dev; 609 int port_rid; 610 int flags; 611{ 612 struct ed_softc *sc = device_get_softc(dev); 613 int error; 614 static unsigned short *intr_vals[] = {ed_intr_val, ed_790_intr_val}; 615 616 error = ed_alloc_port(dev, port_rid, ED_WD_IO_PORTS); 617 if (error) 618 return (error); 619 620 sc->asic_offset = ED_WD_ASIC_OFFSET; 621 sc->nic_offset = ED_WD_NIC_OFFSET; 622 623 return ed_probe_WD80x3_generic(dev, flags, intr_vals); 624} 625 626/* 627 * Probe and vendor-specific initialization routine for 3Com 3c503 boards 628 */ 629int 630ed_probe_3Com(dev, port_rid, flags) 631 device_t dev; 632 int port_rid; 633 int flags; 634{ 635 struct ed_softc *sc = device_get_softc(dev); 636 int error; 637 int i; 638 u_int memsize; 639 u_char isa16bit; 640 u_long conf_maddr, conf_msize, irq, junk; 641 642 error = ed_alloc_port(dev, 0, ED_3COM_IO_PORTS); 643 if (error) 644 return (error); 645 646 sc->asic_offset = ED_3COM_ASIC_OFFSET; 647 sc->nic_offset = ED_3COM_NIC_OFFSET; 648 649 /* 650 * Verify that the kernel configured I/O address matches the board 651 * configured address 652 */ 653 switch (ed_asic_inb(sc, ED_3COM_BCFR)) { 654 case ED_3COM_BCFR_300: 655 if (rman_get_start(sc->port_res) != 0x300) 656 return (ENXIO); 657 break; 658 case ED_3COM_BCFR_310: 659 if (rman_get_start(sc->port_res) != 0x310) 660 return (ENXIO); 661 break; 662 case ED_3COM_BCFR_330: 663 if (rman_get_start(sc->port_res) != 0x330) 664 return (ENXIO); 665 break; 666 case ED_3COM_BCFR_350: 667 if (rman_get_start(sc->port_res) != 0x350) 668 return (ENXIO); 669 break; 670 case ED_3COM_BCFR_250: 671 if (rman_get_start(sc->port_res) != 0x250) 672 return (ENXIO); 673 break; 674 case ED_3COM_BCFR_280: 675 if (rman_get_start(sc->port_res) != 0x280) 676 return (ENXIO); 677 break; 678 case ED_3COM_BCFR_2A0: 679 if (rman_get_start(sc->port_res) != 0x2a0) 680 return (ENXIO); 681 break; 682 case ED_3COM_BCFR_2E0: 683 if (rman_get_start(sc->port_res) != 0x2e0) 684 return (ENXIO); 685 break; 686 default: 687 return (ENXIO); 688 } 689 690 error = bus_get_resource(dev, SYS_RES_MEMORY, 0, 691 &conf_maddr, &conf_msize); 692 if (error) 693 return (error); 694 695 /* 696 * Verify that the kernel shared memory address matches the board 697 * configured address. 698 */ 699 switch (ed_asic_inb(sc, ED_3COM_PCFR)) { 700 case ED_3COM_PCFR_DC000: 701 if (conf_maddr != 0xdc000) 702 return (ENXIO); 703 break; 704 case ED_3COM_PCFR_D8000: 705 if (conf_maddr != 0xd8000) 706 return (ENXIO); 707 break; 708 case ED_3COM_PCFR_CC000: 709 if (conf_maddr != 0xcc000) 710 return (ENXIO); 711 break; 712 case ED_3COM_PCFR_C8000: 713 if (conf_maddr != 0xc8000) 714 return (ENXIO); 715 break; 716 default: 717 return (ENXIO); 718 } 719 720 721 /* 722 * Reset NIC and ASIC. Enable on-board transceiver throughout reset 723 * sequence because it'll lock up if the cable isn't connected if we 724 * don't. 725 */ 726 ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_RST | ED_3COM_CR_XSEL); 727 728 /* 729 * Wait for a while, then un-reset it 730 */ 731 DELAY(50); 732 733 /* 734 * The 3Com ASIC defaults to rather strange settings for the CR after 735 * a reset - it's important to set it again after the following outb 736 * (this is done when we map the PROM below). 737 */ 738 ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_XSEL); 739 740 /* 741 * Wait a bit for the NIC to recover from the reset 742 */ 743 DELAY(5000); 744 745 sc->vendor = ED_VENDOR_3COM; 746 sc->type_str = "3c503"; 747 sc->mem_shared = 1; 748 sc->cr_proto = ED_CR_RD2; 749 750 /* 751 * Hmmm...a 16bit 3Com board has 16k of memory, but only an 8k window 752 * to it. 753 */ 754 memsize = 8192; 755 756 /* 757 * Get station address from on-board ROM 758 */ 759 760 /* 761 * First, map ethernet address PROM over the top of where the NIC 762 * registers normally appear. 763 */ 764 ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_EALO | ED_3COM_CR_XSEL); 765 766 for (i = 0; i < ETHER_ADDR_LEN; ++i) 767 sc->arpcom.ac_enaddr[i] = ed_nic_inb(sc, i); 768 769 /* 770 * Unmap PROM - select NIC registers. The proper setting of the 771 * tranceiver is set in ed_init so that the attach code is given a 772 * chance to set the default based on a compile-time config option 773 */ 774 ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_XSEL); 775 776 /* 777 * Determine if this is an 8bit or 16bit board 778 */ 779 780 /* 781 * select page 0 registers 782 */ 783 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STP); 784 785 /* 786 * Attempt to clear WTS bit. If it doesn't clear, then this is a 16bit 787 * board. 788 */ 789 ed_nic_outb(sc, ED_P0_DCR, 0); 790 791 /* 792 * select page 2 registers 793 */ 794 ed_nic_outb(sc, ED_P0_CR, ED_CR_PAGE_2 | ED_CR_RD2 | ED_CR_STP); 795 796 /* 797 * The 3c503 forces the WTS bit to a one if this is a 16bit board 798 */ 799 if (ed_nic_inb(sc, ED_P2_DCR) & ED_DCR_WTS) 800 isa16bit = 1; 801 else 802 isa16bit = 0; 803 804 /* 805 * select page 0 registers 806 */ 807 ed_nic_outb(sc, ED_P2_CR, ED_CR_RD2 | ED_CR_STP); 808 809 error = ed_alloc_memory(dev, 0, memsize); 810 if (error) 811 return (error); 812 813 sc->mem_start = (caddr_t) rman_get_virtual(sc->mem_res); 814 sc->mem_size = memsize; 815 sc->mem_end = sc->mem_start + memsize; 816 817 /* 818 * We have an entire 8k window to put the transmit buffers on the 819 * 16bit boards. But since the 16bit 3c503's shared memory is only 820 * fast enough to overlap the loading of one full-size packet, trying 821 * to load more than 2 buffers can actually leave the transmitter idle 822 * during the load. So 2 seems the best value. (Although a mix of 823 * variable-sized packets might change this assumption. Nonetheless, 824 * we optimize for linear transfers of same-size packets.) 825 */ 826 if (isa16bit) { 827 if (flags & ED_FLAGS_NO_MULTI_BUFFERING) 828 sc->txb_cnt = 1; 829 else 830 sc->txb_cnt = 2; 831 832 sc->tx_page_start = ED_3COM_TX_PAGE_OFFSET_16BIT; 833 sc->rec_page_start = ED_3COM_RX_PAGE_OFFSET_16BIT; 834 sc->rec_page_stop = memsize / ED_PAGE_SIZE + 835 ED_3COM_RX_PAGE_OFFSET_16BIT; 836 sc->mem_ring = sc->mem_start; 837 } else { 838 sc->txb_cnt = 1; 839 sc->tx_page_start = ED_3COM_TX_PAGE_OFFSET_8BIT; 840 sc->rec_page_start = ED_TXBUF_SIZE + ED_3COM_TX_PAGE_OFFSET_8BIT; 841 sc->rec_page_stop = memsize / ED_PAGE_SIZE + 842 ED_3COM_TX_PAGE_OFFSET_8BIT; 843 sc->mem_ring = sc->mem_start + (ED_PAGE_SIZE * ED_TXBUF_SIZE); 844 } 845 846 sc->isa16bit = isa16bit; 847 848 /* 849 * Initialize GA page start/stop registers. Probably only needed if 850 * doing DMA, but what the hell. 851 */ 852 ed_asic_outb(sc, ED_3COM_PSTR, sc->rec_page_start); 853 ed_asic_outb(sc, ED_3COM_PSPR, sc->rec_page_stop); 854 855 /* 856 * Set IRQ. 3c503 only allows a choice of irq 2-5. 857 */ 858 error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk); 859 if (error) 860 return (error); 861 862 switch (irq) { 863 case 2: 864 case 9: 865 ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ2); 866 break; 867 case 3: 868 ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ3); 869 break; 870 case 4: 871 ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ4); 872 break; 873 case 5: 874 ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ5); 875 break; 876 default: 877 device_printf(dev, "Invalid irq configuration (%ld) must be 3-5,9 for 3c503\n", 878 irq); 879 return (ENXIO); 880 } 881 882 /* 883 * Initialize GA configuration register. Set bank and enable shared 884 * mem. 885 */ 886 ed_asic_outb(sc, ED_3COM_GACFR, ED_3COM_GACFR_RSEL | 887 ED_3COM_GACFR_MBS0); 888 889 /* 890 * Initialize "Vector Pointer" registers. These gawd-awful things are 891 * compared to 20 bits of the address on ISA, and if they match, the 892 * shared memory is disabled. We set them to 0xffff0...allegedly the 893 * reset vector. 894 */ 895 ed_asic_outb(sc, ED_3COM_VPTR2, 0xff); 896 ed_asic_outb(sc, ED_3COM_VPTR1, 0xff); 897 ed_asic_outb(sc, ED_3COM_VPTR0, 0x00); 898 899 /* 900 * Zero memory and verify that it is clear 901 */ 902 bzero(sc->mem_start, memsize); 903 904 for (i = 0; i < memsize; ++i) 905 if (sc->mem_start[i]) { 906 device_printf(dev, "failed to clear shared memory at %jx - check configuration\n", 907 (uintmax_t)kvtop(sc->mem_start + i)); 908 return (ENXIO); 909 } 910 return (0); 911} 912 913/* 914 * Probe and vendor-specific initialization routine for NE1000/2000 boards 915 */ 916int 917ed_probe_Novell_generic(dev, flags) 918 device_t dev; 919 int flags; 920{ 921 struct ed_softc *sc = device_get_softc(dev); 922 u_int memsize, n; 923 u_char romdata[16], tmp; 924 static char test_pattern[32] = "THIS is A memory TEST pattern"; 925 char test_buffer[32]; 926 927 /* XXX - do Novell-specific probe here */ 928 929 /* Reset the board */ 930 if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_GWETHER) { 931 ed_asic_outb(sc, ED_NOVELL_RESET, 0); 932 DELAY(200); 933 } 934 tmp = ed_asic_inb(sc, ED_NOVELL_RESET); 935 936 /* 937 * I don't know if this is necessary; probably cruft leftover from 938 * Clarkson packet driver code. Doesn't do a thing on the boards I've 939 * tested. -DG [note that an outb(0x84, 0) seems to work here, and is 940 * non-invasive...but some boards don't seem to reset and I don't have 941 * complete documentation on what the 'right' thing to do is...so we 942 * do the invasive thing for now. Yuck.] 943 */ 944 ed_asic_outb(sc, ED_NOVELL_RESET, tmp); 945 DELAY(5000); 946 947 /* 948 * This is needed because some NE clones apparently don't reset the 949 * NIC properly (or the NIC chip doesn't reset fully on power-up) XXX 950 * - this makes the probe invasive! ...Done against my better 951 * judgement. -DLG 952 */ 953 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STP); 954 955 DELAY(5000); 956 957 /* Make sure that we really have an 8390 based board */ 958 if (!ed_probe_generic8390(sc)) 959 return (ENXIO); 960 961 sc->vendor = ED_VENDOR_NOVELL; 962 sc->mem_shared = 0; 963 sc->cr_proto = ED_CR_RD2; 964 965 /* 966 * Test the ability to read and write to the NIC memory. This has the 967 * side affect of determining if this is an NE1000 or an NE2000. 968 */ 969 970 /* 971 * This prevents packets from being stored in the NIC memory when the 972 * readmem routine turns on the start bit in the CR. 973 */ 974 ed_nic_outb(sc, ED_P0_RCR, ED_RCR_MON); 975 976 /* Temporarily initialize DCR for byte operations */ 977 ed_nic_outb(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 978 979 ed_nic_outb(sc, ED_P0_PSTART, 8192 / ED_PAGE_SIZE); 980 ed_nic_outb(sc, ED_P0_PSTOP, 16384 / ED_PAGE_SIZE); 981 982 sc->isa16bit = 0; 983 984 /* 985 * Write a test pattern in byte mode. If this fails, then there 986 * probably isn't any memory at 8k - which likely means that the board 987 * is an NE2000. 988 */ 989 ed_pio_writemem(sc, test_pattern, 8192, sizeof(test_pattern)); 990 ed_pio_readmem(sc, 8192, test_buffer, sizeof(test_pattern)); 991 992 if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) { 993 sc->type = ED_TYPE_NE1000; 994 sc->type_str = "NE1000"; 995 } else { 996 997 /* neither an NE1000 nor a Linksys - try NE2000 */ 998 ed_nic_outb(sc, ED_P0_DCR, ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS); 999 ed_nic_outb(sc, ED_P0_PSTART, 16384 / ED_PAGE_SIZE); 1000 ed_nic_outb(sc, ED_P0_PSTOP, 32768 / ED_PAGE_SIZE); 1001 1002 sc->isa16bit = 1; 1003 1004 /* 1005 * Write a test pattern in word mode. If this also fails, then 1006 * we don't know what this board is. 1007 */ 1008 ed_pio_writemem(sc, test_pattern, 16384, sizeof(test_pattern)); 1009 ed_pio_readmem(sc, 16384, test_buffer, sizeof(test_pattern)); 1010 if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) { 1011 sc->type = ED_TYPE_NE2000; 1012 sc->type_str = "NE2000"; 1013 } else { 1014 return (ENXIO); 1015 } 1016 } 1017 1018 1019 /* 8k of memory plus an additional 8k if 16bit */ 1020 memsize = 8192 + sc->isa16bit * 8192; 1021 1022#if 0 /* probably not useful - NE boards only come two ways */ 1023 /* allow kernel config file overrides */ 1024 if (isa_dev->id_msize) 1025 memsize = isa_dev->id_msize; 1026#endif 1027 1028 sc->mem_size = memsize; 1029 1030 /* NIC memory doesn't start at zero on an NE board */ 1031 /* The start address is tied to the bus width */ 1032 sc->mem_start = (char *) 8192 + sc->isa16bit * 8192; 1033 sc->mem_end = sc->mem_start + memsize; 1034 sc->tx_page_start = memsize / ED_PAGE_SIZE; 1035 1036 if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_GWETHER) { 1037 int x, i, mstart = 0, msize = 0; 1038 char pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], tbuf[ED_PAGE_SIZE]; 1039 1040 for (i = 0; i < ED_PAGE_SIZE; i++) 1041 pbuf0[i] = 0; 1042 1043 /* Clear all the memory. */ 1044 for (x = 1; x < 256; x++) 1045 ed_pio_writemem(sc, pbuf0, x * 256, ED_PAGE_SIZE); 1046 1047 /* Search for the start of RAM. */ 1048 for (x = 1; x < 256; x++) { 1049 ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE); 1050 if (bcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 1051 for (i = 0; i < ED_PAGE_SIZE; i++) 1052 pbuf[i] = 255 - x; 1053 ed_pio_writemem(sc, pbuf, x * 256, ED_PAGE_SIZE); 1054 ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE); 1055 if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) { 1056 mstart = x * ED_PAGE_SIZE; 1057 msize = ED_PAGE_SIZE; 1058 break; 1059 } 1060 } 1061 } 1062 1063 if (mstart == 0) { 1064 device_printf(dev, "Cannot find start of RAM.\n"); 1065 return (ENXIO); 1066 } 1067 /* Search for the start of RAM. */ 1068 for (x = (mstart / ED_PAGE_SIZE) + 1; x < 256; x++) { 1069 ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE); 1070 if (bcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) { 1071 for (i = 0; i < ED_PAGE_SIZE; i++) 1072 pbuf[i] = 255 - x; 1073 ed_pio_writemem(sc, pbuf, x * 256, ED_PAGE_SIZE); 1074 ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE); 1075 if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) 1076 msize += ED_PAGE_SIZE; 1077 else { 1078 break; 1079 } 1080 } else { 1081 break; 1082 } 1083 } 1084 1085 if (msize == 0) { 1086 device_printf(dev, "Cannot find any RAM, start : %d, x = %d.\n", mstart, x); 1087 return (ENXIO); 1088 } 1089 device_printf(dev, "RAM start at %d, size : %d.\n", mstart, msize); 1090 1091 sc->mem_size = msize; 1092 sc->mem_start = (caddr_t) mstart; 1093 sc->mem_end = (caddr_t) (msize + mstart); 1094 sc->tx_page_start = mstart / ED_PAGE_SIZE; 1095 } 1096 1097 /* 1098 * Use one xmit buffer if < 16k, two buffers otherwise (if not told 1099 * otherwise). 1100 */ 1101 if ((memsize < 16384) || (flags & ED_FLAGS_NO_MULTI_BUFFERING)) 1102 sc->txb_cnt = 1; 1103 else 1104 sc->txb_cnt = 2; 1105 1106 sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE; 1107 sc->rec_page_stop = sc->tx_page_start + memsize / ED_PAGE_SIZE; 1108 1109 sc->mem_ring = sc->mem_start + sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE; 1110 1111 ed_pio_readmem(sc, 0, romdata, 16); 1112 for (n = 0; n < ETHER_ADDR_LEN; n++) 1113 sc->arpcom.ac_enaddr[n] = romdata[n * (sc->isa16bit + 1)]; 1114 1115 if ((ED_FLAGS_GETTYPE(flags) == ED_FLAGS_GWETHER) && 1116 (sc->arpcom.ac_enaddr[2] == 0x86)) { 1117 sc->type_str = "Gateway AT"; 1118 } 1119 1120 /* clear any pending interrupts that might have occurred above */ 1121 ed_nic_outb(sc, ED_P0_ISR, 0xff); 1122 1123 return (0); 1124} 1125 1126int 1127ed_probe_Novell(dev, port_rid, flags) 1128 device_t dev; 1129 int port_rid; 1130 int flags; 1131{ 1132 struct ed_softc *sc = device_get_softc(dev); 1133 int error; 1134 1135 error = ed_alloc_port(dev, port_rid, ED_NOVELL_IO_PORTS); 1136 if (error) 1137 return (error); 1138 1139 sc->asic_offset = ED_NOVELL_ASIC_OFFSET; 1140 sc->nic_offset = ED_NOVELL_NIC_OFFSET; 1141 1142 return ed_probe_Novell_generic(dev, flags); 1143} 1144 1145#define ED_HPP_TEST_SIZE 16 1146 1147/* 1148 * Probe and vendor specific initialization for the HP PC Lan+ Cards. 1149 * (HP Part nos: 27247B and 27252A). 1150 * 1151 * The card has an asic wrapper around a DS8390 core. The asic handles 1152 * host accesses and offers both standard register IO and memory mapped 1153 * IO. Memory mapped I/O allows better performance at the expense of greater 1154 * chance of an incompatibility with existing ISA cards. 1155 * 1156 * The card has a few caveats: it isn't tolerant of byte wide accesses, only 1157 * short (16 bit) or word (32 bit) accesses are allowed. Some card revisions 1158 * don't allow 32 bit accesses; these are indicated by a bit in the software 1159 * ID register (see if_edreg.h). 1160 * 1161 * Other caveats are: we should read the MAC address only when the card 1162 * is inactive. 1163 * 1164 * For more information; please consult the CRYNWR packet driver. 1165 * 1166 * The AUI port is turned on using the "link2" option on the ifconfig 1167 * command line. 1168 */ 1169int 1170ed_probe_HP_pclanp(dev, port_rid, flags) 1171 device_t dev; 1172 int port_rid; 1173 int flags; 1174{ 1175 struct ed_softc *sc = device_get_softc(dev); 1176 int error; 1177 int n; /* temp var */ 1178 int memsize; /* mem on board */ 1179 u_char checksum; /* checksum of board address */ 1180 u_char irq; /* board configured IRQ */ 1181 char test_pattern[ED_HPP_TEST_SIZE]; /* read/write areas for */ 1182 char test_buffer[ED_HPP_TEST_SIZE]; /* probing card */ 1183 u_long conf_maddr, conf_msize, conf_irq, junk; 1184 1185 error = ed_alloc_port(dev, 0, ED_HPP_IO_PORTS); 1186 if (error) 1187 return (error); 1188 1189 /* Fill in basic information */ 1190 sc->asic_offset = ED_HPP_ASIC_OFFSET; 1191 sc->nic_offset = ED_HPP_NIC_OFFSET; 1192 1193 sc->chip_type = ED_CHIP_TYPE_DP8390; 1194 sc->isa16bit = 0; /* the 8390 core needs to be in byte mode */ 1195 1196 /* 1197 * Look for the HP PCLAN+ signature: "0x50,0x48,0x00,0x53" 1198 */ 1199 1200 if ((ed_asic_inb(sc, ED_HPP_ID) != 0x50) || 1201 (ed_asic_inb(sc, ED_HPP_ID + 1) != 0x48) || 1202 ((ed_asic_inb(sc, ED_HPP_ID + 2) & 0xF0) != 0) || 1203 (ed_asic_inb(sc, ED_HPP_ID + 3) != 0x53)) 1204 return ENXIO; 1205 1206 /* 1207 * Read the MAC address and verify checksum on the address. 1208 */ 1209 1210 ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_MAC); 1211 for (n = 0, checksum = 0; n < ETHER_ADDR_LEN; n++) 1212 checksum += (sc->arpcom.ac_enaddr[n] = 1213 ed_asic_inb(sc, ED_HPP_MAC_ADDR + n)); 1214 1215 checksum += ed_asic_inb(sc, ED_HPP_MAC_ADDR + ETHER_ADDR_LEN); 1216 1217 if (checksum != 0xFF) 1218 return ENXIO; 1219 1220 /* 1221 * Verify that the software model number is 0. 1222 */ 1223 1224 ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_ID); 1225 if (((sc->hpp_id = ed_asic_inw(sc, ED_HPP_PAGE_4)) & 1226 ED_HPP_ID_SOFT_MODEL_MASK) != 0x0000) 1227 return ENXIO; 1228 1229 /* 1230 * Read in and save the current options configured on card. 1231 */ 1232 1233 sc->hpp_options = ed_asic_inw(sc, ED_HPP_OPTION); 1234 1235 sc->hpp_options |= (ED_HPP_OPTION_NIC_RESET | 1236 ED_HPP_OPTION_CHIP_RESET | 1237 ED_HPP_OPTION_ENABLE_IRQ); 1238 1239 /* 1240 * Reset the chip. This requires writing to the option register 1241 * so take care to preserve the other bits. 1242 */ 1243 1244 ed_asic_outw(sc, ED_HPP_OPTION, 1245 (sc->hpp_options & ~(ED_HPP_OPTION_NIC_RESET | 1246 ED_HPP_OPTION_CHIP_RESET))); 1247 1248 DELAY(5000); /* wait for chip reset to complete */ 1249 1250 ed_asic_outw(sc, ED_HPP_OPTION, 1251 (sc->hpp_options | (ED_HPP_OPTION_NIC_RESET | 1252 ED_HPP_OPTION_CHIP_RESET | 1253 ED_HPP_OPTION_ENABLE_IRQ))); 1254 1255 DELAY(5000); 1256 1257 if (!(ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RST)) 1258 return ENXIO; /* reset did not complete */ 1259 1260 /* 1261 * Read out configuration information. 1262 */ 1263 1264 ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_HW); 1265 1266 irq = ed_asic_inb(sc, ED_HPP_HW_IRQ); 1267 1268 /* 1269 * Check for impossible IRQ. 1270 */ 1271 1272 if (irq >= (sizeof(ed_hpp_intr_val) / sizeof(ed_hpp_intr_val[0]))) 1273 return ENXIO; 1274 1275 /* 1276 * If the kernel IRQ was specified with a '?' use the cards idea 1277 * of the IRQ. If the kernel IRQ was explicitly specified, it 1278 * should match that of the hardware. 1279 */ 1280 error = bus_get_resource(dev, SYS_RES_IRQ, 0, 1281 &conf_irq, &junk); 1282 if (error) { 1283 bus_set_resource(dev, SYS_RES_IRQ, 0, 1284 ed_hpp_intr_val[irq], 1); 1285 } else { 1286 if (conf_irq != ed_hpp_intr_val[irq]) 1287 return (ENXIO); 1288 } 1289 1290 /* 1291 * Fill in softconfig info. 1292 */ 1293 1294 sc->vendor = ED_VENDOR_HP; 1295 sc->type = ED_TYPE_HP_PCLANPLUS; 1296 sc->type_str = "HP-PCLAN+"; 1297 1298 sc->mem_shared = 0; /* we DON'T have dual ported RAM */ 1299 sc->mem_start = 0; /* we use offsets inside the card RAM */ 1300 1301 sc->hpp_mem_start = NULL;/* no memory mapped I/O by default */ 1302 1303 /* 1304 * The board has 32KB of memory. Is there a way to determine 1305 * this programmatically? 1306 */ 1307 1308 memsize = 32768; 1309 1310 /* 1311 * Check if memory mapping of the I/O registers possible. 1312 */ 1313 1314 if (sc->hpp_options & ED_HPP_OPTION_MEM_ENABLE) 1315 { 1316 u_long mem_addr; 1317 1318 /* 1319 * determine the memory address from the board. 1320 */ 1321 1322 ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_HW); 1323 mem_addr = (ed_asic_inw(sc, ED_HPP_HW_MEM_MAP) << 8); 1324 1325 /* 1326 * Check that the kernel specified start of memory and 1327 * hardware's idea of it match. 1328 */ 1329 error = bus_get_resource(dev, SYS_RES_MEMORY, 0, 1330 &conf_maddr, &conf_msize); 1331 if (error) 1332 return (error); 1333 1334 if (mem_addr != conf_maddr) 1335 return ENXIO; 1336 1337 error = ed_alloc_memory(dev, 0, memsize); 1338 if (error) 1339 return (error); 1340 1341 sc->hpp_mem_start = rman_get_virtual(sc->mem_res); 1342 } 1343 1344 /* 1345 * Fill in the rest of the soft config structure. 1346 */ 1347 1348 /* 1349 * The transmit page index. 1350 */ 1351 1352 sc->tx_page_start = ED_HPP_TX_PAGE_OFFSET; 1353 1354 if (device_get_flags(dev) & ED_FLAGS_NO_MULTI_BUFFERING) 1355 sc->txb_cnt = 1; 1356 else 1357 sc->txb_cnt = 2; 1358 1359 /* 1360 * Memory description 1361 */ 1362 1363 sc->mem_size = memsize; 1364 sc->mem_ring = sc->mem_start + 1365 (sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE); 1366 sc->mem_end = sc->mem_start + sc->mem_size; 1367 1368 /* 1369 * Receive area starts after the transmit area and 1370 * continues till the end of memory. 1371 */ 1372 1373 sc->rec_page_start = sc->tx_page_start + 1374 (sc->txb_cnt * ED_TXBUF_SIZE); 1375 sc->rec_page_stop = (sc->mem_size / ED_PAGE_SIZE); 1376 1377 1378 sc->cr_proto = 0; /* value works */ 1379 1380 /* 1381 * Set the wrap registers for string I/O reads. 1382 */ 1383 1384 ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_HW); 1385 ed_asic_outw(sc, ED_HPP_HW_WRAP, 1386 ((sc->rec_page_start / ED_PAGE_SIZE) | 1387 (((sc->rec_page_stop / ED_PAGE_SIZE) - 1) << 8))); 1388 1389 /* 1390 * Reset the register page to normal operation. 1391 */ 1392 1393 ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_PERF); 1394 1395 /* 1396 * Verify that we can read/write from adapter memory. 1397 * Create test pattern. 1398 */ 1399 1400 for (n = 0; n < ED_HPP_TEST_SIZE; n++) 1401 { 1402 test_pattern[n] = (n*n) ^ ~n; 1403 } 1404 1405#undef ED_HPP_TEST_SIZE 1406 1407 /* 1408 * Check that the memory is accessible thru the I/O ports. 1409 * Write out the contents of "test_pattern", read back 1410 * into "test_buffer" and compare the two for any 1411 * mismatch. 1412 */ 1413 1414 for (n = 0; n < (32768 / ED_PAGE_SIZE); n ++) { 1415 1416 ed_hpp_writemem(sc, test_pattern, (n * ED_PAGE_SIZE), 1417 sizeof(test_pattern)); 1418 ed_hpp_readmem(sc, (n * ED_PAGE_SIZE), 1419 test_buffer, sizeof(test_pattern)); 1420 1421 if (bcmp(test_pattern, test_buffer, 1422 sizeof(test_pattern))) 1423 return ENXIO; 1424 } 1425 1426 return (0); 1427 1428} 1429 1430/* 1431 * HP PC Lan+ : Set the physical link to use AUI or TP/TL. 1432 */ 1433 1434static void 1435ed_hpp_set_physical_link(struct ed_softc *sc) 1436{ 1437 struct ifnet *ifp = &sc->arpcom.ac_if; 1438 int lan_page; 1439 1440 ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_LAN); 1441 lan_page = ed_asic_inw(sc, ED_HPP_PAGE_0); 1442 1443 if (ifp->if_flags & IFF_ALTPHYS) { 1444 1445 /* 1446 * Use the AUI port. 1447 */ 1448 1449 lan_page |= ED_HPP_LAN_AUI; 1450 1451 ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_LAN); 1452 ed_asic_outw(sc, ED_HPP_PAGE_0, lan_page); 1453 1454 1455 } else { 1456 1457 /* 1458 * Use the ThinLan interface 1459 */ 1460 1461 lan_page &= ~ED_HPP_LAN_AUI; 1462 1463 ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_LAN); 1464 ed_asic_outw(sc, ED_HPP_PAGE_0, lan_page); 1465 1466 } 1467 1468 /* 1469 * Wait for the lan card to re-initialize itself 1470 */ 1471 1472 DELAY(150000); /* wait 150 ms */ 1473 1474 /* 1475 * Restore normal pages. 1476 */ 1477 1478 ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_PERF); 1479 1480} 1481 1482/* 1483 * Allocate a port resource with the given resource id. 1484 */ 1485int 1486ed_alloc_port(dev, rid, size) 1487 device_t dev; 1488 int rid; 1489 int size; 1490{ 1491 struct ed_softc *sc = device_get_softc(dev); 1492 struct resource *res; 1493 1494 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 1495 0ul, ~0ul, size, RF_ACTIVE); 1496 if (res) { 1497 sc->port_rid = rid; 1498 sc->port_res = res; 1499 sc->port_used = size; 1500 return (0); 1501 } else { 1502 return (ENOENT); 1503 } 1504} 1505 1506/* 1507 * Allocate a memory resource with the given resource id. 1508 */ 1509int 1510ed_alloc_memory(dev, rid, size) 1511 device_t dev; 1512 int rid; 1513 int size; 1514{ 1515 struct ed_softc *sc = device_get_softc(dev); 1516 struct resource *res; 1517 1518 res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 1519 0ul, ~0ul, size, RF_ACTIVE); 1520 if (res) { 1521 sc->mem_rid = rid; 1522 sc->mem_res = res; 1523 sc->mem_used = size; 1524 return (0); 1525 } else { 1526 return (ENOENT); 1527 } 1528} 1529 1530/* 1531 * Allocate an irq resource with the given resource id. 1532 */ 1533int 1534ed_alloc_irq(dev, rid, flags) 1535 device_t dev; 1536 int rid; 1537 int flags; 1538{ 1539 struct ed_softc *sc = device_get_softc(dev); 1540 struct resource *res; 1541 1542 res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 1543 0ul, ~0ul, 1, (RF_ACTIVE | flags)); 1544 if (res) { 1545 sc->irq_rid = rid; 1546 sc->irq_res = res; 1547 return (0); 1548 } else { 1549 return (ENOENT); 1550 } 1551} 1552 1553/* 1554 * Release all resources 1555 */ 1556void 1557ed_release_resources(dev) 1558 device_t dev; 1559{ 1560 struct ed_softc *sc = device_get_softc(dev); 1561 1562 if (sc->port_res) { 1563 bus_deactivate_resource(dev, SYS_RES_IOPORT, 1564 sc->port_rid, sc->port_res); 1565 bus_release_resource(dev, SYS_RES_IOPORT, 1566 sc->port_rid, sc->port_res); 1567 sc->port_res = 0; 1568 } 1569 if (sc->mem_res) { 1570 bus_deactivate_resource(dev, SYS_RES_MEMORY, 1571 sc->mem_rid, sc->mem_res); 1572 bus_release_resource(dev, SYS_RES_MEMORY, 1573 sc->mem_rid, sc->mem_res); 1574 sc->mem_res = 0; 1575 } 1576 if (sc->irq_res) { 1577 bus_deactivate_resource(dev, SYS_RES_IRQ, 1578 sc->irq_rid, sc->irq_res); 1579 bus_release_resource(dev, SYS_RES_IRQ, 1580 sc->irq_rid, sc->irq_res); 1581 sc->irq_res = 0; 1582 } 1583} 1584 1585/* 1586 * Install interface into kernel networking data structures 1587 */ 1588int 1589ed_attach(sc, unit, flags) 1590 struct ed_softc *sc; 1591 int unit; 1592 int flags; 1593{ 1594 struct ifnet *ifp = &sc->arpcom.ac_if; 1595 1596 callout_handle_init(&sc->tick_ch); 1597 /* 1598 * Set interface to stopped condition (reset) 1599 */ 1600 ed_stop(sc); 1601 1602 if (!ifp->if_name) { 1603 /* 1604 * Initialize ifnet structure 1605 */ 1606 ifp->if_softc = sc; 1607 ifp->if_unit = unit; 1608 ifp->if_name = "ed"; 1609 ifp->if_output = ether_output; 1610 ifp->if_start = ed_start; 1611 ifp->if_ioctl = ed_ioctl; 1612 ifp->if_watchdog = ed_watchdog; 1613 ifp->if_init = ed_init; 1614 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 1615 ifp->if_linkmib = &sc->mibdata; 1616 ifp->if_linkmiblen = sizeof sc->mibdata; 1617 /* 1618 * XXX - should do a better job. 1619 */ 1620 if (sc->chip_type == ED_CHIP_TYPE_WD790) 1621 sc->mibdata.dot3StatsEtherChipSet = 1622 DOT3CHIPSET(dot3VendorWesternDigital, 1623 dot3ChipSetWesternDigital83C790); 1624 else 1625 sc->mibdata.dot3StatsEtherChipSet = 1626 DOT3CHIPSET(dot3VendorNational, 1627 dot3ChipSetNational8390); 1628 sc->mibdata.dot3Compliance = DOT3COMPLIANCE_COLLS; 1629 1630 /* 1631 * Set default state for ALTPHYS flag (used to disable the 1632 * tranceiver for AUI operation), based on compile-time 1633 * config option. 1634 */ 1635 if (flags & ED_FLAGS_DISABLE_TRANCEIVER) 1636 ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | 1637 IFF_MULTICAST | IFF_ALTPHYS); 1638 else 1639 ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | 1640 IFF_MULTICAST); 1641 1642 /* 1643 * Attach the interface 1644 */ 1645 ether_ifattach(ifp, sc->arpcom.ac_enaddr); 1646 } 1647 /* device attach does transition from UNCONFIGURED to IDLE state */ 1648 1649 /* 1650 * Print additional info when attached 1651 */ 1652 if_printf(ifp, "address %6D, ", sc->arpcom.ac_enaddr, ":"); 1653 1654 if (sc->type_str && (*sc->type_str != 0)) 1655 printf("type %s ", sc->type_str); 1656 else 1657 printf("type unknown (0x%x) ", sc->type); 1658 1659 if (sc->vendor == ED_VENDOR_HP) 1660 printf("(%s %s IO)", (sc->hpp_id & ED_HPP_ID_16_BIT_ACCESS) ? 1661 "16-bit" : "32-bit", 1662 sc->hpp_mem_start ? "memory mapped" : "regular"); 1663 else 1664 printf("%s ", sc->isa16bit ? "(16 bit)" : "(8 bit)"); 1665 1666 printf("%s\n", (((sc->vendor == ED_VENDOR_3COM) || 1667 (sc->vendor == ED_VENDOR_HP)) && 1668 (ifp->if_flags & IFF_ALTPHYS)) ? " tranceiver disabled" : ""); 1669 1670 return (0); 1671} 1672 1673/* 1674 * Reset interface. 1675 */ 1676static void 1677ed_reset(ifp) 1678 struct ifnet *ifp; 1679{ 1680 struct ed_softc *sc = ifp->if_softc; 1681 int s; 1682 1683 if (sc->gone) 1684 return; 1685 s = splimp(); 1686 1687 /* 1688 * Stop interface and re-initialize. 1689 */ 1690 ed_stop(sc); 1691 ed_init(sc); 1692 1693 (void) splx(s); 1694} 1695 1696/* 1697 * Take interface offline. 1698 */ 1699void 1700ed_stop(sc) 1701 struct ed_softc *sc; 1702{ 1703 int n = 5000; 1704 1705#ifndef ED_NO_MIIBUS 1706 untimeout(ed_tick, sc, sc->tick_ch); 1707 callout_handle_init(&sc->tick_ch); 1708#endif 1709 if (sc->gone) 1710 return; 1711 /* 1712 * Stop everything on the interface, and select page 0 registers. 1713 */ 1714 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STP); 1715 1716 /* 1717 * Wait for interface to enter stopped state, but limit # of checks to 1718 * 'n' (about 5ms). It shouldn't even take 5us on modern DS8390's, but 1719 * just in case it's an old one. 1720 */ 1721 if (sc->chip_type != ED_CHIP_TYPE_AX88190) 1722 while (((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RST) == 0) && --n); 1723} 1724 1725/* 1726 * Device timeout/watchdog routine. Entered if the device neglects to 1727 * generate an interrupt after a transmit has been started on it. 1728 */ 1729static void 1730ed_watchdog(ifp) 1731 struct ifnet *ifp; 1732{ 1733 struct ed_softc *sc = ifp->if_softc; 1734 1735 if (sc->gone) 1736 return; 1737 log(LOG_ERR, "ed%d: device timeout\n", ifp->if_unit); 1738 ifp->if_oerrors++; 1739 1740 ed_reset(ifp); 1741} 1742 1743#ifndef ED_NO_MIIBUS 1744static void 1745ed_tick(arg) 1746 void *arg; 1747{ 1748 struct ed_softc *sc = arg; 1749 struct mii_data *mii; 1750 int s; 1751 1752 if (sc->gone) { 1753 callout_handle_init(&sc->tick_ch); 1754 return; 1755 } 1756 s = splimp(); 1757 if (sc->miibus != NULL) { 1758 mii = device_get_softc(sc->miibus); 1759 mii_tick(mii); 1760 } 1761 sc->tick_ch = timeout(ed_tick, sc, hz); 1762 splx(s); 1763} 1764#endif 1765 1766/* 1767 * Initialize device. 1768 */ 1769static void 1770ed_init(xsc) 1771 void *xsc; 1772{ 1773 struct ed_softc *sc = xsc; 1774 struct ifnet *ifp = &sc->arpcom.ac_if; 1775 int i, s; 1776 1777 if (sc->gone) 1778 return; 1779 1780 /* address not known */ 1781 if (TAILQ_EMPTY(&ifp->if_addrhead)) /* unlikely? XXX */ 1782 return; 1783 1784 /* 1785 * Initialize the NIC in the exact order outlined in the NS manual. 1786 * This init procedure is "mandatory"...don't change what or when 1787 * things happen. 1788 */ 1789 s = splimp(); 1790 1791 /* reset transmitter flags */ 1792 sc->xmit_busy = 0; 1793 ifp->if_timer = 0; 1794 1795 sc->txb_inuse = 0; 1796 sc->txb_new = 0; 1797 sc->txb_next_tx = 0; 1798 1799 /* This variable is used below - don't move this assignment */ 1800 sc->next_packet = sc->rec_page_start + 1; 1801 1802 /* 1803 * Set interface for page 0, Remote DMA complete, Stopped 1804 */ 1805 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STP); 1806 1807 if (sc->isa16bit) { 1808 1809 /* 1810 * Set FIFO threshold to 8, No auto-init Remote DMA, byte 1811 * order=80x86, word-wide DMA xfers, 1812 */ 1813 ed_nic_outb(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_WTS | ED_DCR_LS); 1814 } else { 1815 1816 /* 1817 * Same as above, but byte-wide DMA xfers 1818 */ 1819 ed_nic_outb(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 1820 } 1821 1822 /* 1823 * Clear Remote Byte Count Registers 1824 */ 1825 ed_nic_outb(sc, ED_P0_RBCR0, 0); 1826 ed_nic_outb(sc, ED_P0_RBCR1, 0); 1827 1828 /* 1829 * For the moment, don't store incoming packets in memory. 1830 */ 1831 ed_nic_outb(sc, ED_P0_RCR, ED_RCR_MON); 1832 1833 /* 1834 * Place NIC in internal loopback mode 1835 */ 1836 ed_nic_outb(sc, ED_P0_TCR, ED_TCR_LB0); 1837 1838 /* 1839 * Initialize transmit/receive (ring-buffer) Page Start 1840 */ 1841 ed_nic_outb(sc, ED_P0_TPSR, sc->tx_page_start); 1842 ed_nic_outb(sc, ED_P0_PSTART, sc->rec_page_start); 1843 /* Set lower bits of byte addressable framing to 0 */ 1844 if (sc->chip_type == ED_CHIP_TYPE_WD790) 1845 ed_nic_outb(sc, 0x09, 0); 1846 1847 /* 1848 * Initialize Receiver (ring-buffer) Page Stop and Boundry 1849 */ 1850 ed_nic_outb(sc, ED_P0_PSTOP, sc->rec_page_stop); 1851 ed_nic_outb(sc, ED_P0_BNRY, sc->rec_page_start); 1852 1853 /* 1854 * Clear all interrupts. A '1' in each bit position clears the 1855 * corresponding flag. 1856 */ 1857 ed_nic_outb(sc, ED_P0_ISR, 0xff); 1858 1859 /* 1860 * Enable the following interrupts: receive/transmit complete, 1861 * receive/transmit error, and Receiver OverWrite. 1862 * 1863 * Counter overflow and Remote DMA complete are *not* enabled. 1864 */ 1865 ed_nic_outb(sc, ED_P0_IMR, 1866 ED_IMR_PRXE | ED_IMR_PTXE | ED_IMR_RXEE | ED_IMR_TXEE | ED_IMR_OVWE); 1867 1868 /* 1869 * Program Command Register for page 1 1870 */ 1871 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); 1872 1873 /* 1874 * Copy out our station address 1875 */ 1876 for (i = 0; i < ETHER_ADDR_LEN; ++i) 1877 ed_nic_outb(sc, ED_P1_PAR(i), sc->arpcom.ac_enaddr[i]); 1878 1879 /* 1880 * Set Current Page pointer to next_packet (initialized above) 1881 */ 1882 ed_nic_outb(sc, ED_P1_CURR, sc->next_packet); 1883 1884 /* 1885 * Program Receiver Configuration Register and multicast filter. CR is 1886 * set to page 0 on return. 1887 */ 1888 ed_setrcr(sc); 1889 1890 /* 1891 * Take interface out of loopback 1892 */ 1893 ed_nic_outb(sc, ED_P0_TCR, 0); 1894 1895 /* 1896 * If this is a 3Com board, the tranceiver must be software enabled 1897 * (there is no settable hardware default). 1898 */ 1899 if (sc->vendor == ED_VENDOR_3COM) { 1900 if (ifp->if_flags & IFF_ALTPHYS) { 1901 ed_asic_outb(sc, ED_3COM_CR, 0); 1902 } else { 1903 ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_XSEL); 1904 } 1905 } 1906 1907#ifndef ED_NO_MIIBUS 1908 if (sc->miibus != NULL) { 1909 struct mii_data *mii; 1910 mii = device_get_softc(sc->miibus); 1911 mii_mediachg(mii); 1912 } 1913#endif 1914 /* 1915 * Set 'running' flag, and clear output active flag. 1916 */ 1917 ifp->if_flags |= IFF_RUNNING; 1918 ifp->if_flags &= ~IFF_OACTIVE; 1919 1920 /* 1921 * ...and attempt to start output 1922 */ 1923 ed_start(ifp); 1924 1925#ifndef ED_NO_MIIBUS 1926 untimeout(ed_tick, sc, sc->tick_ch); 1927 sc->tick_ch = timeout(ed_tick, sc, hz); 1928#endif 1929 (void) splx(s); 1930} 1931 1932/* 1933 * This routine actually starts the transmission on the interface 1934 */ 1935static __inline void 1936ed_xmit(sc) 1937 struct ed_softc *sc; 1938{ 1939 struct ifnet *ifp = (struct ifnet *)sc; 1940 unsigned short len; 1941 1942 if (sc->gone) 1943 return; 1944 len = sc->txb_len[sc->txb_next_tx]; 1945 1946 /* 1947 * Set NIC for page 0 register access 1948 */ 1949 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA); 1950 1951 /* 1952 * Set TX buffer start page 1953 */ 1954 ed_nic_outb(sc, ED_P0_TPSR, sc->tx_page_start + 1955 sc->txb_next_tx * ED_TXBUF_SIZE); 1956 1957 /* 1958 * Set TX length 1959 */ 1960 ed_nic_outb(sc, ED_P0_TBCR0, len); 1961 ed_nic_outb(sc, ED_P0_TBCR1, len >> 8); 1962 1963 /* 1964 * Set page 0, Remote DMA complete, Transmit Packet, and *Start* 1965 */ 1966 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_TXP | ED_CR_STA); 1967 sc->xmit_busy = 1; 1968 1969 /* 1970 * Point to next transmit buffer slot and wrap if necessary. 1971 */ 1972 sc->txb_next_tx++; 1973 if (sc->txb_next_tx == sc->txb_cnt) 1974 sc->txb_next_tx = 0; 1975 1976 /* 1977 * Set a timer just in case we never hear from the board again 1978 */ 1979 ifp->if_timer = 2; 1980} 1981 1982/* 1983 * Start output on interface. 1984 * We make two assumptions here: 1985 * 1) that the current priority is set to splimp _before_ this code 1986 * is called *and* is returned to the appropriate priority after 1987 * return 1988 * 2) that the IFF_OACTIVE flag is checked before this code is called 1989 * (i.e. that the output part of the interface is idle) 1990 */ 1991static void 1992ed_start(ifp) 1993 struct ifnet *ifp; 1994{ 1995 struct ed_softc *sc = ifp->if_softc; 1996 struct mbuf *m0, *m; 1997 caddr_t buffer; 1998 int len; 1999 2000 if (sc->gone) { 2001 printf("ed_start(%p) GONE\n",ifp); 2002 return; 2003 } 2004outloop: 2005 2006 /* 2007 * First, see if there are buffered packets and an idle transmitter - 2008 * should never happen at this point. 2009 */ 2010 if (sc->txb_inuse && (sc->xmit_busy == 0)) { 2011 printf("ed: packets buffered, but transmitter idle\n"); 2012 ed_xmit(sc); 2013 } 2014 2015 /* 2016 * See if there is room to put another packet in the buffer. 2017 */ 2018 if (sc->txb_inuse == sc->txb_cnt) { 2019 2020 /* 2021 * No room. Indicate this to the outside world and exit. 2022 */ 2023 ifp->if_flags |= IFF_OACTIVE; 2024 return; 2025 } 2026 IF_DEQUEUE(&ifp->if_snd, m); 2027 if (m == 0) { 2028 2029 /* 2030 * We are using the !OACTIVE flag to indicate to the outside 2031 * world that we can accept an additional packet rather than 2032 * that the transmitter is _actually_ active. Indeed, the 2033 * transmitter may be active, but if we haven't filled all the 2034 * buffers with data then we still want to accept more. 2035 */ 2036 ifp->if_flags &= ~IFF_OACTIVE; 2037 return; 2038 } 2039 2040 /* 2041 * Copy the mbuf chain into the transmit buffer 2042 */ 2043 2044 m0 = m; 2045 2046 /* txb_new points to next open buffer slot */ 2047 buffer = sc->mem_start + (sc->txb_new * ED_TXBUF_SIZE * ED_PAGE_SIZE); 2048 2049 if (sc->mem_shared) { 2050 2051 /* 2052 * Special case setup for 16 bit boards... 2053 */ 2054 if (sc->isa16bit) { 2055 switch (sc->vendor) { 2056 2057 /* 2058 * For 16bit 3Com boards (which have 16k of 2059 * memory), we have the xmit buffers in a 2060 * different page of memory ('page 0') - so 2061 * change pages. 2062 */ 2063 case ED_VENDOR_3COM: 2064 ed_asic_outb(sc, ED_3COM_GACFR, 2065 ED_3COM_GACFR_RSEL); 2066 break; 2067 2068 /* 2069 * Enable 16bit access to shared memory on 2070 * WD/SMC boards. 2071 */ 2072 case ED_VENDOR_WD_SMC: 2073 ed_asic_outb(sc, ED_WD_LAAR, 2074 sc->wd_laar_proto | ED_WD_LAAR_M16EN); 2075 if (sc->chip_type == ED_CHIP_TYPE_WD790) { 2076 ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_MENB); 2077 } 2078 break; 2079 } 2080 } 2081 for (len = 0; m != 0; m = m->m_next) { 2082 bcopy(mtod(m, caddr_t), buffer, m->m_len); 2083 buffer += m->m_len; 2084 len += m->m_len; 2085 } 2086 2087 /* 2088 * Restore previous shared memory access 2089 */ 2090 if (sc->isa16bit) { 2091 switch (sc->vendor) { 2092 case ED_VENDOR_3COM: 2093 ed_asic_outb(sc, ED_3COM_GACFR, 2094 ED_3COM_GACFR_RSEL | ED_3COM_GACFR_MBS0); 2095 break; 2096 case ED_VENDOR_WD_SMC: 2097 if (sc->chip_type == ED_CHIP_TYPE_WD790) { 2098 ed_asic_outb(sc, ED_WD_MSR, 0x00); 2099 } 2100 ed_asic_outb(sc, ED_WD_LAAR, 2101 sc->wd_laar_proto & ~ED_WD_LAAR_M16EN); 2102 break; 2103 } 2104 } 2105 } else { 2106 len = ed_pio_write_mbufs(sc, m, (int)buffer); 2107 if (len == 0) { 2108 m_freem(m0); 2109 goto outloop; 2110 } 2111 } 2112 2113 sc->txb_len[sc->txb_new] = max(len, (ETHER_MIN_LEN-ETHER_CRC_LEN)); 2114 2115 sc->txb_inuse++; 2116 2117 /* 2118 * Point to next buffer slot and wrap if necessary. 2119 */ 2120 sc->txb_new++; 2121 if (sc->txb_new == sc->txb_cnt) 2122 sc->txb_new = 0; 2123 2124 if (sc->xmit_busy == 0) 2125 ed_xmit(sc); 2126 2127 /* 2128 * Tap off here if there is a bpf listener. 2129 */ 2130 BPF_MTAP(ifp, m0); 2131 2132 m_freem(m0); 2133 2134 /* 2135 * Loop back to the top to possibly buffer more packets 2136 */ 2137 goto outloop; 2138} 2139 2140/* 2141 * Ethernet interface receiver interrupt. 2142 */ 2143static __inline void 2144ed_rint(sc) 2145 struct ed_softc *sc; 2146{ 2147 struct ifnet *ifp = &sc->arpcom.ac_if; 2148 u_char boundry; 2149 u_short len; 2150 struct ed_ring packet_hdr; 2151 char *packet_ptr; 2152 2153 if (sc->gone) 2154 return; 2155 2156 /* 2157 * Set NIC to page 1 registers to get 'current' pointer 2158 */ 2159 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); 2160 2161 /* 2162 * 'sc->next_packet' is the logical beginning of the ring-buffer - 2163 * i.e. it points to where new data has been buffered. The 'CURR' 2164 * (current) register points to the logical end of the ring-buffer - 2165 * i.e. it points to where additional new data will be added. We loop 2166 * here until the logical beginning equals the logical end (or in 2167 * other words, until the ring-buffer is empty). 2168 */ 2169 while (sc->next_packet != ed_nic_inb(sc, ED_P1_CURR)) { 2170 2171 /* get pointer to this buffer's header structure */ 2172 packet_ptr = sc->mem_ring + 2173 (sc->next_packet - sc->rec_page_start) * ED_PAGE_SIZE; 2174 2175 /* 2176 * The byte count includes a 4 byte header that was added by 2177 * the NIC. 2178 */ 2179 if (sc->mem_shared) 2180 packet_hdr = *(struct ed_ring *) packet_ptr; 2181 else 2182 ed_pio_readmem(sc, (int)packet_ptr, (char *) &packet_hdr, 2183 sizeof(packet_hdr)); 2184 len = packet_hdr.count; 2185 if (len > (ETHER_MAX_LEN - ETHER_CRC_LEN + sizeof(struct ed_ring)) || 2186 len < (ETHER_MIN_LEN - ETHER_CRC_LEN + sizeof(struct ed_ring))) { 2187 /* 2188 * Length is a wild value. There's a good chance that 2189 * this was caused by the NIC being old and buggy. 2190 * The bug is that the length low byte is duplicated in 2191 * the high byte. Try to recalculate the length based on 2192 * the pointer to the next packet. 2193 */ 2194 /* 2195 * NOTE: sc->next_packet is pointing at the current packet. 2196 */ 2197 len &= ED_PAGE_SIZE - 1; /* preserve offset into page */ 2198 if (packet_hdr.next_packet >= sc->next_packet) { 2199 len += (packet_hdr.next_packet - sc->next_packet) * ED_PAGE_SIZE; 2200 } else { 2201 len += ((packet_hdr.next_packet - sc->rec_page_start) + 2202 (sc->rec_page_stop - sc->next_packet)) * ED_PAGE_SIZE; 2203 } 2204 /* 2205 * because buffers are aligned on 256-byte boundary, 2206 * the length computed above is off by 256 in almost 2207 * all cases. Fix it... 2208 */ 2209 if (len & 0xff) 2210 len -= 256 ; 2211 if (len > (ETHER_MAX_LEN - ETHER_CRC_LEN 2212 + sizeof(struct ed_ring))) 2213 sc->mibdata.dot3StatsFrameTooLongs++; 2214 } 2215 /* 2216 * Be fairly liberal about what we allow as a "reasonable" length 2217 * so that a [crufty] packet will make it to BPF (and can thus 2218 * be analyzed). Note that all that is really important is that 2219 * we have a length that will fit into one mbuf cluster or less; 2220 * the upper layer protocols can then figure out the length from 2221 * their own length field(s). 2222 * But make sure that we have at least a full ethernet header 2223 * or we would be unable to call ether_input() later. 2224 */ 2225 if ((len >= sizeof(struct ed_ring) + ETHER_HDR_LEN) && 2226 (len <= MCLBYTES) && 2227 (packet_hdr.next_packet >= sc->rec_page_start) && 2228 (packet_hdr.next_packet < sc->rec_page_stop)) { 2229 /* 2230 * Go get packet. 2231 */ 2232 ed_get_packet(sc, packet_ptr + sizeof(struct ed_ring), 2233 len - sizeof(struct ed_ring)); 2234 ifp->if_ipackets++; 2235 } else { 2236 /* 2237 * Really BAD. The ring pointers are corrupted. 2238 */ 2239 log(LOG_ERR, 2240 "ed%d: NIC memory corrupt - invalid packet length %d\n", 2241 ifp->if_unit, len); 2242 ifp->if_ierrors++; 2243 ed_reset(ifp); 2244 return; 2245 } 2246 2247 /* 2248 * Update next packet pointer 2249 */ 2250 sc->next_packet = packet_hdr.next_packet; 2251 2252 /* 2253 * Update NIC boundry pointer - being careful to keep it one 2254 * buffer behind. (as recommended by NS databook) 2255 */ 2256 boundry = sc->next_packet - 1; 2257 if (boundry < sc->rec_page_start) 2258 boundry = sc->rec_page_stop - 1; 2259 2260 /* 2261 * Set NIC to page 0 registers to update boundry register 2262 */ 2263 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA); 2264 2265 ed_nic_outb(sc, ED_P0_BNRY, boundry); 2266 2267 /* 2268 * Set NIC to page 1 registers before looping to top (prepare 2269 * to get 'CURR' current pointer) 2270 */ 2271 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); 2272 } 2273} 2274 2275/* 2276 * Ethernet interface interrupt processor 2277 */ 2278void 2279edintr(arg) 2280 void *arg; 2281{ 2282 struct ed_softc *sc = (struct ed_softc*) arg; 2283 struct ifnet *ifp = (struct ifnet *)sc; 2284 u_char isr; 2285 int count; 2286 2287 if (sc->gone) 2288 return; 2289 /* 2290 * Set NIC to page 0 registers 2291 */ 2292 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA); 2293 2294 /* 2295 * loop until there are no more new interrupts. When the card 2296 * goes away, the hardware will read back 0xff. Looking at 2297 * the interrupts, it would appear that 0xff is impossible, 2298 * or at least extremely unlikely. 2299 */ 2300 while ((isr = ed_nic_inb(sc, ED_P0_ISR)) != 0 && isr != 0xff) { 2301 2302 /* 2303 * reset all the bits that we are 'acknowledging' by writing a 2304 * '1' to each bit position that was set (writing a '1' 2305 * *clears* the bit) 2306 */ 2307 ed_nic_outb(sc, ED_P0_ISR, isr); 2308 2309 /* 2310 * XXX workaround for AX88190 2311 * We limit this to 5000 iterations. At 1us per inb/outb, 2312 * this translates to about 15ms, which should be plenty 2313 * of time, and also gives protection in the card eject 2314 * case. 2315 */ 2316 if (sc->chip_type == ED_CHIP_TYPE_AX88190) { 2317 count = 5000; /* 15ms */ 2318 while (count-- && (ed_nic_inb(sc, ED_P0_ISR) & isr)) { 2319 ed_nic_outb(sc, ED_P0_ISR,0); 2320 ed_nic_outb(sc, ED_P0_ISR,isr); 2321 } 2322 if (count == 0) 2323 break; 2324 } 2325 2326 /* 2327 * Handle transmitter interrupts. Handle these first because 2328 * the receiver will reset the board under some conditions. 2329 */ 2330 if (isr & (ED_ISR_PTX | ED_ISR_TXE)) { 2331 u_char collisions = ed_nic_inb(sc, ED_P0_NCR) & 0x0f; 2332 2333 /* 2334 * Check for transmit error. If a TX completed with an 2335 * error, we end up throwing the packet away. Really 2336 * the only error that is possible is excessive 2337 * collisions, and in this case it is best to allow 2338 * the automatic mechanisms of TCP to backoff the 2339 * flow. Of course, with UDP we're screwed, but this 2340 * is expected when a network is heavily loaded. 2341 */ 2342 (void) ed_nic_inb(sc, ED_P0_TSR); 2343 if (isr & ED_ISR_TXE) { 2344 u_char tsr; 2345 2346 /* 2347 * Excessive collisions (16) 2348 */ 2349 tsr = ed_nic_inb(sc, ED_P0_TSR); 2350 if ((tsr & ED_TSR_ABT) 2351 && (collisions == 0)) { 2352 2353 /* 2354 * When collisions total 16, the 2355 * P0_NCR will indicate 0, and the 2356 * TSR_ABT is set. 2357 */ 2358 collisions = 16; 2359 sc->mibdata.dot3StatsExcessiveCollisions++; 2360 sc->mibdata.dot3StatsCollFrequencies[15]++; 2361 } 2362 if (tsr & ED_TSR_OWC) 2363 sc->mibdata.dot3StatsLateCollisions++; 2364 if (tsr & ED_TSR_CDH) 2365 sc->mibdata.dot3StatsSQETestErrors++; 2366 if (tsr & ED_TSR_CRS) 2367 sc->mibdata.dot3StatsCarrierSenseErrors++; 2368 if (tsr & ED_TSR_FU) 2369 sc->mibdata.dot3StatsInternalMacTransmitErrors++; 2370 2371 /* 2372 * update output errors counter 2373 */ 2374 ifp->if_oerrors++; 2375 } else { 2376 2377 /* 2378 * Update total number of successfully 2379 * transmitted packets. 2380 */ 2381 ifp->if_opackets++; 2382 } 2383 2384 /* 2385 * reset tx busy and output active flags 2386 */ 2387 sc->xmit_busy = 0; 2388 ifp->if_flags &= ~IFF_OACTIVE; 2389 2390 /* 2391 * clear watchdog timer 2392 */ 2393 ifp->if_timer = 0; 2394 2395 /* 2396 * Add in total number of collisions on last 2397 * transmission. 2398 */ 2399 ifp->if_collisions += collisions; 2400 switch(collisions) { 2401 case 0: 2402 case 16: 2403 break; 2404 case 1: 2405 sc->mibdata.dot3StatsSingleCollisionFrames++; 2406 sc->mibdata.dot3StatsCollFrequencies[0]++; 2407 break; 2408 default: 2409 sc->mibdata.dot3StatsMultipleCollisionFrames++; 2410 sc->mibdata. 2411 dot3StatsCollFrequencies[collisions-1] 2412 ++; 2413 break; 2414 } 2415 2416 /* 2417 * Decrement buffer in-use count if not zero (can only 2418 * be zero if a transmitter interrupt occured while 2419 * not actually transmitting). If data is ready to 2420 * transmit, start it transmitting, otherwise defer 2421 * until after handling receiver 2422 */ 2423 if (sc->txb_inuse && --sc->txb_inuse) 2424 ed_xmit(sc); 2425 } 2426 2427 /* 2428 * Handle receiver interrupts 2429 */ 2430 if (isr & (ED_ISR_PRX | ED_ISR_RXE | ED_ISR_OVW)) { 2431 2432 /* 2433 * Overwrite warning. In order to make sure that a 2434 * lockup of the local DMA hasn't occurred, we reset 2435 * and re-init the NIC. The NSC manual suggests only a 2436 * partial reset/re-init is necessary - but some chips 2437 * seem to want more. The DMA lockup has been seen 2438 * only with early rev chips - Methinks this bug was 2439 * fixed in later revs. -DG 2440 */ 2441 if (isr & ED_ISR_OVW) { 2442 ifp->if_ierrors++; 2443#ifdef DIAGNOSTIC 2444 log(LOG_WARNING, 2445 "ed%d: warning - receiver ring buffer overrun\n", 2446 ifp->if_unit); 2447#endif 2448 2449 /* 2450 * Stop/reset/re-init NIC 2451 */ 2452 ed_reset(ifp); 2453 } else { 2454 2455 /* 2456 * Receiver Error. One or more of: CRC error, 2457 * frame alignment error FIFO overrun, or 2458 * missed packet. 2459 */ 2460 if (isr & ED_ISR_RXE) { 2461 u_char rsr; 2462 rsr = ed_nic_inb(sc, ED_P0_RSR); 2463 if (rsr & ED_RSR_CRC) 2464 sc->mibdata.dot3StatsFCSErrors++; 2465 if (rsr & ED_RSR_FAE) 2466 sc->mibdata.dot3StatsAlignmentErrors++; 2467 if (rsr & ED_RSR_FO) 2468 sc->mibdata.dot3StatsInternalMacReceiveErrors++; 2469 ifp->if_ierrors++; 2470#ifdef ED_DEBUG 2471 if_printf(ifp, "receive error %x\n", 2472 ed_nic_inb(sc, ED_P0_RSR)); 2473#endif 2474 } 2475 2476 /* 2477 * Go get the packet(s) XXX - Doing this on an 2478 * error is dubious because there shouldn't be 2479 * any data to get (we've configured the 2480 * interface to not accept packets with 2481 * errors). 2482 */ 2483 2484 /* 2485 * Enable 16bit access to shared memory first 2486 * on WD/SMC boards. 2487 */ 2488 if (sc->isa16bit && 2489 (sc->vendor == ED_VENDOR_WD_SMC)) { 2490 2491 ed_asic_outb(sc, ED_WD_LAAR, 2492 sc->wd_laar_proto | ED_WD_LAAR_M16EN); 2493 if (sc->chip_type == ED_CHIP_TYPE_WD790) { 2494 ed_asic_outb(sc, ED_WD_MSR, 2495 ED_WD_MSR_MENB); 2496 } 2497 } 2498 ed_rint(sc); 2499 2500 /* disable 16bit access */ 2501 if (sc->isa16bit && 2502 (sc->vendor == ED_VENDOR_WD_SMC)) { 2503 2504 if (sc->chip_type == ED_CHIP_TYPE_WD790) { 2505 ed_asic_outb(sc, ED_WD_MSR, 0x00); 2506 } 2507 ed_asic_outb(sc, ED_WD_LAAR, 2508 sc->wd_laar_proto & ~ED_WD_LAAR_M16EN); 2509 } 2510 } 2511 } 2512 2513 /* 2514 * If it looks like the transmitter can take more data, 2515 * attempt to start output on the interface. This is done 2516 * after handling the receiver to give the receiver priority. 2517 */ 2518 if ((ifp->if_flags & IFF_OACTIVE) == 0) 2519 ed_start(ifp); 2520 2521 /* 2522 * return NIC CR to standard state: page 0, remote DMA 2523 * complete, start (toggling the TXP bit off, even if was just 2524 * set in the transmit routine, is *okay* - it is 'edge' 2525 * triggered from low to high) 2526 */ 2527 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA); 2528 2529 /* 2530 * If the Network Talley Counters overflow, read them to reset 2531 * them. It appears that old 8390's won't clear the ISR flag 2532 * otherwise - resulting in an infinite loop. 2533 */ 2534 if (isr & ED_ISR_CNT) { 2535 (void) ed_nic_inb(sc, ED_P0_CNTR0); 2536 (void) ed_nic_inb(sc, ED_P0_CNTR1); 2537 (void) ed_nic_inb(sc, ED_P0_CNTR2); 2538 } 2539 } 2540} 2541 2542/* 2543 * Process an ioctl request. This code needs some work - it looks 2544 * pretty ugly. 2545 */ 2546static int 2547ed_ioctl(ifp, command, data) 2548 register struct ifnet *ifp; 2549 u_long command; 2550 caddr_t data; 2551{ 2552 struct ed_softc *sc = ifp->if_softc; 2553#ifndef ED_NO_MIIBUS 2554 struct ifreq *ifr = (struct ifreq *)data; 2555 struct mii_data *mii; 2556#endif 2557 int s, error = 0; 2558 2559 if (sc == NULL || sc->gone) { 2560 ifp->if_flags &= ~IFF_RUNNING; 2561 return ENXIO; 2562 } 2563 s = splimp(); 2564 2565 switch (command) { 2566 case SIOCSIFFLAGS: 2567 2568 /* 2569 * If the interface is marked up and stopped, then start it. 2570 * If it is marked down and running, then stop it. 2571 */ 2572 if (ifp->if_flags & IFF_UP) { 2573 if ((ifp->if_flags & IFF_RUNNING) == 0) 2574 ed_init(sc); 2575 } else { 2576 if (ifp->if_flags & IFF_RUNNING) { 2577 ed_stop(sc); 2578 ifp->if_flags &= ~IFF_RUNNING; 2579 } 2580 } 2581 2582 /* 2583 * Promiscuous flag may have changed, so reprogram the RCR. 2584 */ 2585 ed_setrcr(sc); 2586 2587 /* 2588 * An unfortunate hack to provide the (required) software 2589 * control of the tranceiver for 3Com boards. The ALTPHYS flag 2590 * disables the tranceiver if set. 2591 */ 2592 if (sc->vendor == ED_VENDOR_3COM) { 2593 if (ifp->if_flags & IFF_ALTPHYS) { 2594 ed_asic_outb(sc, ED_3COM_CR, 0); 2595 } else { 2596 ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_XSEL); 2597 } 2598 } else if (sc->vendor == ED_VENDOR_HP) 2599 ed_hpp_set_physical_link(sc); 2600 break; 2601 2602 case SIOCADDMULTI: 2603 case SIOCDELMULTI: 2604 /* 2605 * Multicast list has changed; set the hardware filter 2606 * accordingly. 2607 */ 2608 ed_setrcr(sc); 2609 error = 0; 2610 break; 2611 2612#ifndef ED_NO_MIIBUS 2613 case SIOCGIFMEDIA: 2614 case SIOCSIFMEDIA: 2615 if (sc->miibus == NULL) { 2616 error = EINVAL; 2617 break; 2618 } 2619 mii = device_get_softc(sc->miibus); 2620 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 2621 break; 2622#endif 2623 2624 default: 2625 error = ether_ioctl(ifp, command, data); 2626 } 2627 (void) splx(s); 2628 return (error); 2629} 2630 2631/* 2632 * Given a source and destination address, copy 'amount' of a packet from 2633 * the ring buffer into a linear destination buffer. Takes into account 2634 * ring-wrap. 2635 */ 2636static __inline char * 2637ed_ring_copy(sc, src, dst, amount) 2638 struct ed_softc *sc; 2639 char *src; 2640 char *dst; 2641 u_short amount; 2642{ 2643 u_short tmp_amount; 2644 2645 /* does copy wrap to lower addr in ring buffer? */ 2646 if (src + amount > sc->mem_end) { 2647 tmp_amount = sc->mem_end - src; 2648 2649 /* copy amount up to end of NIC memory */ 2650 if (sc->mem_shared) 2651 bcopy(src, dst, tmp_amount); 2652 else 2653 ed_pio_readmem(sc, (int)src, dst, tmp_amount); 2654 2655 amount -= tmp_amount; 2656 src = sc->mem_ring; 2657 dst += tmp_amount; 2658 } 2659 if (sc->mem_shared) 2660 bcopy(src, dst, amount); 2661 else 2662 ed_pio_readmem(sc, (int)src, dst, amount); 2663 2664 return (src + amount); 2665} 2666 2667/* 2668 * Retreive packet from shared memory and send to the next level up via 2669 * ether_input(). 2670 */ 2671static void 2672ed_get_packet(sc, buf, len) 2673 struct ed_softc *sc; 2674 char *buf; 2675 u_short len; 2676{ 2677 struct ifnet *ifp = &sc->arpcom.ac_if; 2678 struct ether_header *eh; 2679 struct mbuf *m; 2680 2681 /* Allocate a header mbuf */ 2682 MGETHDR(m, M_DONTWAIT, MT_DATA); 2683 if (m == NULL) 2684 return; 2685 m->m_pkthdr.rcvif = ifp; 2686 m->m_pkthdr.len = m->m_len = len; 2687 2688 /* 2689 * We always put the received packet in a single buffer - 2690 * either with just an mbuf header or in a cluster attached 2691 * to the header. The +2 is to compensate for the alignment 2692 * fixup below. 2693 */ 2694 if ((len + 2) > MHLEN) { 2695 /* Attach an mbuf cluster */ 2696 MCLGET(m, M_DONTWAIT); 2697 2698 /* Insist on getting a cluster */ 2699 if ((m->m_flags & M_EXT) == 0) { 2700 m_freem(m); 2701 return; 2702 } 2703 } 2704 2705 /* 2706 * The +2 is to longword align the start of the real packet. 2707 * This is important for NFS. 2708 */ 2709 m->m_data += 2; 2710 eh = mtod(m, struct ether_header *); 2711 2712 /* 2713 * Don't read in the entire packet if we know we're going to drop it 2714 * and no bpf is active. 2715 */ 2716 if (!ifp->if_bpf && BDG_ACTIVE( (ifp) ) ) { 2717 struct ifnet *bif; 2718 2719 ed_ring_copy(sc, buf, (char *)eh, ETHER_HDR_LEN); 2720 bif = bridge_in_ptr(ifp, eh) ; 2721 if (bif == BDG_DROP) { 2722 m_freem(m); 2723 return; 2724 } 2725 if (len > ETHER_HDR_LEN) 2726 ed_ring_copy(sc, buf + ETHER_HDR_LEN, 2727 (char *)(eh + 1), len - ETHER_HDR_LEN); 2728 } else 2729 /* 2730 * Get packet, including link layer address, from interface. 2731 */ 2732 ed_ring_copy(sc, buf, (char *)eh, len); 2733 2734 m->m_pkthdr.len = m->m_len = len; 2735 2736 (*ifp->if_input)(ifp, m); 2737} 2738 2739/* 2740 * Supporting routines 2741 */ 2742 2743/* 2744 * Given a NIC memory source address and a host memory destination 2745 * address, copy 'amount' from NIC to host using Programmed I/O. 2746 * The 'amount' is rounded up to a word - okay as long as mbufs 2747 * are word sized. 2748 * This routine is currently Novell-specific. 2749 */ 2750void 2751ed_pio_readmem(sc, src, dst, amount) 2752 struct ed_softc *sc; 2753 int src; 2754 unsigned char *dst; 2755 unsigned short amount; 2756{ 2757 /* HP PC Lan+ cards need special handling */ 2758 if (sc->vendor == ED_VENDOR_HP && sc->type == ED_TYPE_HP_PCLANPLUS) { 2759 ed_hpp_readmem(sc, src, dst, amount); 2760 return; 2761 } 2762 2763 /* Regular Novell cards */ 2764 /* select page 0 registers */ 2765 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STA); 2766 2767 /* round up to a word */ 2768 if (amount & 1) 2769 ++amount; 2770 2771 /* set up DMA byte count */ 2772 ed_nic_outb(sc, ED_P0_RBCR0, amount); 2773 ed_nic_outb(sc, ED_P0_RBCR1, amount >> 8); 2774 2775 /* set up source address in NIC mem */ 2776 ed_nic_outb(sc, ED_P0_RSAR0, src); 2777 ed_nic_outb(sc, ED_P0_RSAR1, src >> 8); 2778 2779 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD0 | ED_CR_STA); 2780 2781 if (sc->isa16bit) { 2782 ed_asic_insw(sc, ED_NOVELL_DATA, dst, amount / 2); 2783 } else { 2784 ed_asic_insb(sc, ED_NOVELL_DATA, dst, amount); 2785 } 2786} 2787 2788/* 2789 * Stripped down routine for writing a linear buffer to NIC memory. 2790 * Only used in the probe routine to test the memory. 'len' must 2791 * be even. 2792 */ 2793void 2794ed_pio_writemem(sc, src, dst, len) 2795 struct ed_softc *sc; 2796 char *src; 2797 unsigned short dst; 2798 unsigned short len; 2799{ 2800 int maxwait = 200; /* about 240us */ 2801 2802 /* select page 0 registers */ 2803 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STA); 2804 2805 /* reset remote DMA complete flag */ 2806 ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC); 2807 2808 /* set up DMA byte count */ 2809 ed_nic_outb(sc, ED_P0_RBCR0, len); 2810 ed_nic_outb(sc, ED_P0_RBCR1, len >> 8); 2811 2812 /* set up destination address in NIC mem */ 2813 ed_nic_outb(sc, ED_P0_RSAR0, dst); 2814 ed_nic_outb(sc, ED_P0_RSAR1, dst >> 8); 2815 2816 /* set remote DMA write */ 2817 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD1 | ED_CR_STA); 2818 2819 if (sc->isa16bit) { 2820 ed_asic_outsw(sc, ED_NOVELL_DATA, src, len / 2); 2821 } else { 2822 ed_asic_outsb(sc, ED_NOVELL_DATA, src, len); 2823 } 2824 2825 /* 2826 * Wait for remote DMA complete. This is necessary because on the 2827 * transmit side, data is handled internally by the NIC in bursts and 2828 * we can't start another remote DMA until this one completes. Not 2829 * waiting causes really bad things to happen - like the NIC 2830 * irrecoverably jamming the ISA bus. 2831 */ 2832 while (((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RDC) != ED_ISR_RDC) && --maxwait); 2833} 2834 2835/* 2836 * Write an mbuf chain to the destination NIC memory address using 2837 * programmed I/O. 2838 */ 2839static u_short 2840ed_pio_write_mbufs(sc, m, dst) 2841 struct ed_softc *sc; 2842 struct mbuf *m; 2843 int dst; 2844{ 2845 struct ifnet *ifp = (struct ifnet *)sc; 2846 unsigned short total_len, dma_len; 2847 struct mbuf *mp; 2848 int maxwait = 200; /* about 240us */ 2849 2850 /* HP PC Lan+ cards need special handling */ 2851 if (sc->vendor == ED_VENDOR_HP && sc->type == ED_TYPE_HP_PCLANPLUS) { 2852 return ed_hpp_write_mbufs(sc, m, dst); 2853 } 2854 2855 /* Regular Novell cards */ 2856 /* First, count up the total number of bytes to copy */ 2857 for (total_len = 0, mp = m; mp; mp = mp->m_next) 2858 total_len += mp->m_len; 2859 2860 dma_len = total_len; 2861 if (sc->isa16bit && (dma_len & 1)) 2862 dma_len++; 2863 2864 /* select page 0 registers */ 2865 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STA); 2866 2867 /* reset remote DMA complete flag */ 2868 ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC); 2869 2870 /* set up DMA byte count */ 2871 ed_nic_outb(sc, ED_P0_RBCR0, dma_len); 2872 ed_nic_outb(sc, ED_P0_RBCR1, dma_len >> 8); 2873 2874 /* set up destination address in NIC mem */ 2875 ed_nic_outb(sc, ED_P0_RSAR0, dst); 2876 ed_nic_outb(sc, ED_P0_RSAR1, dst >> 8); 2877 2878 /* set remote DMA write */ 2879 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD1 | ED_CR_STA); 2880 2881 /* 2882 * Transfer the mbuf chain to the NIC memory. 2883 * 16-bit cards require that data be transferred as words, and only words. 2884 * So that case requires some extra code to patch over odd-length mbufs. 2885 */ 2886 2887 if (!sc->isa16bit) { 2888 /* NE1000s are easy */ 2889 while (m) { 2890 if (m->m_len) { 2891 ed_asic_outsb(sc, ED_NOVELL_DATA, 2892 m->m_data, m->m_len); 2893 } 2894 m = m->m_next; 2895 } 2896 } else { 2897 /* NE2000s are a pain */ 2898 unsigned char *data; 2899 int len, wantbyte; 2900 unsigned char savebyte[2]; 2901 2902 wantbyte = 0; 2903 2904 while (m) { 2905 len = m->m_len; 2906 if (len) { 2907 data = mtod(m, caddr_t); 2908 /* finish the last word */ 2909 if (wantbyte) { 2910 savebyte[1] = *data; 2911 ed_asic_outw(sc, ED_NOVELL_DATA, 2912 *(u_short *)savebyte); 2913 data++; 2914 len--; 2915 wantbyte = 0; 2916 } 2917 /* output contiguous words */ 2918 if (len > 1) { 2919 ed_asic_outsw(sc, ED_NOVELL_DATA, 2920 data, len >> 1); 2921 data += len & ~1; 2922 len &= 1; 2923 } 2924 /* save last byte, if necessary */ 2925 if (len == 1) { 2926 savebyte[0] = *data; 2927 wantbyte = 1; 2928 } 2929 } 2930 m = m->m_next; 2931 } 2932 /* spit last byte */ 2933 if (wantbyte) { 2934 ed_asic_outw(sc, ED_NOVELL_DATA, *(u_short *)savebyte); 2935 } 2936 } 2937 2938 /* 2939 * Wait for remote DMA complete. This is necessary because on the 2940 * transmit side, data is handled internally by the NIC in bursts and 2941 * we can't start another remote DMA until this one completes. Not 2942 * waiting causes really bad things to happen - like the NIC 2943 * irrecoverably jamming the ISA bus. 2944 */ 2945 while (((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RDC) != ED_ISR_RDC) && --maxwait); 2946 2947 if (!maxwait) { 2948 log(LOG_WARNING, "ed%d: remote transmit DMA failed to complete\n", 2949 ifp->if_unit); 2950 ed_reset(ifp); 2951 return(0); 2952 } 2953 return (total_len); 2954} 2955 2956/* 2957 * Support routines to handle the HP PC Lan+ card. 2958 */ 2959 2960/* 2961 * HP PC Lan+: Read from NIC memory, using either PIO or memory mapped 2962 * IO. 2963 */ 2964 2965static void 2966ed_hpp_readmem(sc, src, dst, amount) 2967 struct ed_softc *sc; 2968 unsigned short src; 2969 unsigned char *dst; 2970 unsigned short amount; 2971{ 2972 2973 int use_32bit_access = !(sc->hpp_id & ED_HPP_ID_16_BIT_ACCESS); 2974 2975 2976 /* Program the source address in RAM */ 2977 ed_asic_outw(sc, ED_HPP_PAGE_2, src); 2978 2979 /* 2980 * The HP PC Lan+ card supports word reads as well as 2981 * a memory mapped i/o port that is aliased to every 2982 * even address on the board. 2983 */ 2984 2985 if (sc->hpp_mem_start) { 2986 2987 /* Enable memory mapped access. */ 2988 ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options & 2989 ~(ED_HPP_OPTION_MEM_DISABLE | 2990 ED_HPP_OPTION_BOOT_ROM_ENB)); 2991 2992 if (use_32bit_access && (amount > 3)) { 2993 u_int32_t *dl = (u_int32_t *) dst; 2994 volatile u_int32_t *const sl = 2995 (u_int32_t *) sc->hpp_mem_start; 2996 u_int32_t *const fence = dl + (amount >> 2); 2997 2998 /* Copy out NIC data. We could probably write this 2999 as a `movsl'. The currently generated code is lousy. 3000 */ 3001 3002 while (dl < fence) 3003 *dl++ = *sl; 3004 3005 dst += (amount & ~3); 3006 amount &= 3; 3007 3008 } 3009 3010 /* Finish off any words left, as a series of short reads */ 3011 if (amount > 1) { 3012 u_short *d = (u_short *) dst; 3013 volatile u_short *const s = 3014 (u_short *) sc->hpp_mem_start; 3015 u_short *const fence = d + (amount >> 1); 3016 3017 /* Copy out NIC data. */ 3018 3019 while (d < fence) 3020 *d++ = *s; 3021 3022 dst += (amount & ~1); 3023 amount &= 1; 3024 } 3025 3026 /* 3027 * read in a byte; however we need to always read 16 bits 3028 * at a time or the hardware gets into a funny state 3029 */ 3030 3031 if (amount == 1) { 3032 /* need to read in a short and copy LSB */ 3033 volatile u_short *const s = 3034 (volatile u_short *) sc->hpp_mem_start; 3035 3036 *dst = (*s) & 0xFF; 3037 } 3038 3039 /* Restore Boot ROM access. */ 3040 3041 ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options); 3042 3043 3044 } else { 3045 /* Read in data using the I/O port */ 3046 if (use_32bit_access && (amount > 3)) { 3047 ed_asic_insl(sc, ED_HPP_PAGE_4, dst, amount >> 2); 3048 dst += (amount & ~3); 3049 amount &= 3; 3050 } 3051 if (amount > 1) { 3052 ed_asic_insw(sc, ED_HPP_PAGE_4, dst, amount >> 1); 3053 dst += (amount & ~1); 3054 amount &= 1; 3055 } 3056 if (amount == 1) { /* read in a short and keep the LSB */ 3057 *dst = ed_asic_inw(sc, ED_HPP_PAGE_4) & 0xFF; 3058 } 3059 } 3060} 3061 3062/* 3063 * HP PC Lan+: Write to NIC memory, using either PIO or memory mapped 3064 * IO. 3065 * Only used in the probe routine to test the memory. 'len' must 3066 * be even. 3067 */ 3068static void 3069ed_hpp_writemem(sc, src, dst, len) 3070 struct ed_softc *sc; 3071 unsigned char *src; 3072 unsigned short dst; 3073 unsigned short len; 3074{ 3075 /* reset remote DMA complete flag */ 3076 ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC); 3077 3078 /* program the write address in RAM */ 3079 ed_asic_outw(sc, ED_HPP_PAGE_0, dst); 3080 3081 if (sc->hpp_mem_start) { 3082 u_short *s = (u_short *) src; 3083 volatile u_short *d = (u_short *) sc->hpp_mem_start; 3084 u_short *const fence = s + (len >> 1); 3085 3086 /* 3087 * Enable memory mapped access. 3088 */ 3089 3090 ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options & 3091 ~(ED_HPP_OPTION_MEM_DISABLE | 3092 ED_HPP_OPTION_BOOT_ROM_ENB)); 3093 3094 /* 3095 * Copy to NIC memory. 3096 */ 3097 3098 while (s < fence) 3099 *d = *s++; 3100 3101 /* 3102 * Restore Boot ROM access. 3103 */ 3104 3105 ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options); 3106 3107 } else { 3108 /* write data using I/O writes */ 3109 ed_asic_outsw(sc, ED_HPP_PAGE_4, src, len / 2); 3110 } 3111} 3112 3113/* 3114 * Write to HP PC Lan+ NIC memory. Access to the NIC can be by using 3115 * outsw() or via the memory mapped interface to the same register. 3116 * Writes have to be in word units; byte accesses won't work and may cause 3117 * the NIC to behave weirdly. Long word accesses are permitted if the ASIC 3118 * allows it. 3119 */ 3120 3121static u_short 3122ed_hpp_write_mbufs(struct ed_softc *sc, struct mbuf *m, int dst) 3123{ 3124 int len, wantbyte; 3125 unsigned short total_len; 3126 unsigned char savebyte[2]; 3127 volatile u_short * const d = 3128 (volatile u_short *) sc->hpp_mem_start; 3129 int use_32bit_accesses = !(sc->hpp_id & ED_HPP_ID_16_BIT_ACCESS); 3130 3131 /* select page 0 registers */ 3132 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA); 3133 3134 /* reset remote DMA complete flag */ 3135 ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC); 3136 3137 /* program the write address in RAM */ 3138 ed_asic_outw(sc, ED_HPP_PAGE_0, dst); 3139 3140 if (sc->hpp_mem_start) /* enable memory mapped I/O */ 3141 ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options & 3142 ~(ED_HPP_OPTION_MEM_DISABLE | 3143 ED_HPP_OPTION_BOOT_ROM_ENB)); 3144 3145 wantbyte = 0; 3146 total_len = 0; 3147 3148 if (sc->hpp_mem_start) { /* Memory mapped I/O port */ 3149 while (m) { 3150 total_len += (len = m->m_len); 3151 if (len) { 3152 caddr_t data = mtod(m, caddr_t); 3153 /* finish the last word of the previous mbuf */ 3154 if (wantbyte) { 3155 savebyte[1] = *data;
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