if_ie.c revision 40565
1/*- 2 * Copyright (c) 1992, 1993, University of Vermont and State 3 * Agricultural College. 4 * Copyright (c) 1992, 1993, Garrett A. Wollman. 5 * 6 * Portions: 7 * Copyright (c) 1990, 1991, William F. Jolitz 8 * Copyright (c) 1990, The Regents of the University of California 9 * 10 * 3Com 3C507 support: 11 * Copyright (c) 1993, 1994, Charles M. Hannum 12 * 13 * EtherExpress 16 support: 14 * Copyright (c) 1993, 1994, 1995, Rodney W. Grimes 15 * Copyright (c) 1997, Aaron C. Smith 16 * 17 * All rights reserved. 18 * 19 * Redistribution and use in source and binary forms, with or without 20 * modification, are permitted provided that the following conditions 21 * are met: 22 * 1. Redistributions of source code must retain the above copyright 23 * notice, this list of conditions and the following disclaimer. 24 * 2. Redistributions in binary form must reproduce the above copyright 25 * notice, this list of conditions and the following disclaimer in the 26 * documentation and/or other materials provided with the distribution. 27 * 3. All advertising materials mentioning features or use of this software 28 * must display the following acknowledgement: 29 * This product includes software developed by the University of 30 * Vermont and State Agricultural College and Garrett A. Wollman, by 31 * William F. Jolitz, by the University of California, Berkeley, 32 * Lawrence Berkeley Laboratory, and their contributors, by 33 * Charles M. Hannum, by Rodney W. Grimes, and by Aaron C. Smith. 34 * 4. Neither the names of the Universities nor the names of the authors 35 * may be used to endorse or promote products derived from this software 36 * without specific prior written permission. 37 * 38 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 39 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 41 * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR AUTHORS BE LIABLE 42 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 43 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 44 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 45 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 46 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 47 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * 50 * $Id: if_ie.c,v 1.56 1998/08/10 17:21:48 bde Exp $ 51 */ 52 53/* 54 * Intel 82586 Ethernet chip 55 * Register, bit, and structure definitions. 56 * 57 * Written by GAW with reference to the Clarkson Packet Driver code for this 58 * chip written by Russ Nelson and others. 59 * 60 * Intel EtherExpress 16 support from if_ix.c, written by Rodney W. Grimes. 61 */ 62 63/* 64 * The i82586 is a very versatile chip, found in many implementations. 65 * Programming this chip is mostly the same, but certain details differ 66 * from card to card. This driver is written so that different cards 67 * can be automatically detected at run-time. 68 */ 69 70/* 71Mode of operation: 72 73We run the 82586 in a standard Ethernet mode. We keep NFRAMES received 74frame descriptors around for the receiver to use, and NRXBUFS associated 75receive buffer descriptors, both in a circular list. Whenever a frame is 76received, we rotate both lists as necessary. (The 586 treats both lists 77as a simple queue.) We also keep a transmit command around so that packets 78can be sent off quickly. 79 80We configure the adapter in AL-LOC = 1 mode, which means that the 81Ethernet/802.3 MAC header is placed at the beginning of the receive buffer 82rather than being split off into various fields in the RFD. This also 83means that we must include this header in the transmit buffer as well. 84 85By convention, all transmit commands, and only transmit commands, shall 86have the I (IE_CMD_INTR) bit set in the command. This way, when an 87interrupt arrives at ieintr(), it is immediately possible to tell 88what precisely caused it. ANY OTHER command-sending routines should 89run at splimp(), and should post an acknowledgement to every interrupt 90they generate. 91 92The 82586 has a 24-bit address space internally, and the adaptor's memory 93is located at the top of this region. However, the value we are given in 94configuration is normally the *bottom* of the adaptor RAM. So, we must go 95through a few gyrations to come up with a kernel virtual address which 96represents the actual beginning of the 586 address space. First, we 97autosize the RAM by running through several possible sizes and trying to 98initialize the adapter under the assumption that the selected size is 99correct. Then, knowing the correct RAM size, we set up our pointers in 100ie_softc[unit]. `iomem' represents the computed base of the 586 address 101space. `iomembot' represents the actual configured base of adapter RAM. 102Finally, `iosize' represents the calculated size of 586 RAM. Then, when 103laying out commands, we use the interval [iomembot, iomembot + iosize); to 104make 24-pointers, we subtract iomem, and to make 16-pointers, we subtract 105iomem and and with 0xffff. 106 107*/ 108 109#include "ie.h" 110#if NIE > 0 111#include "opt_inet.h" 112#include "opt_ipx.h" 113 114#include <sys/param.h> 115#include <sys/systm.h> 116#include <sys/kernel.h> 117#include <sys/malloc.h> 118#include <sys/conf.h> 119#include <sys/mbuf.h> 120#include <sys/socket.h> 121#include <sys/sockio.h> 122#include <sys/syslog.h> 123 124#include <net/if.h> 125#include <net/if_types.h> 126#include <net/if_dl.h> 127 128#include "bpfilter.h" 129 130#ifdef INET 131#include <netinet/in.h> 132#include <netinet/if_ether.h> 133#endif 134 135#ifdef IPX 136#include <netipx/ipx.h> 137#include <netipx/ipx_if.h> 138#endif 139 140#ifdef NS 141#include <netns/ns.h> 142#include <netns/ns_if.h> 143#endif 144 145#include <machine/clock.h> 146#include <machine/md_var.h> 147 148#include <i386/isa/isa_device.h> 149#include <i386/isa/ic/i82586.h> 150#include <i386/isa/icu.h> 151#include <i386/isa/if_iereg.h> 152#include <i386/isa/if_ie507.h> 153#include <i386/isa/if_iee16.h> 154#include <i386/isa/elink.h> 155 156#if NBPFILTER > 0 157#include <net/bpf.h> 158#endif 159 160#ifdef DEBUG 161#define IED_RINT 0x01 162#define IED_TINT 0x02 163#define IED_RNR 0x04 164#define IED_CNA 0x08 165#define IED_READFRAME 0x10 166static int ie_debug = IED_RNR; 167 168#endif 169 170#define IE_BUF_LEN ETHER_MAX_LEN /* length of transmit buffer */ 171 172/* Forward declaration */ 173struct ie_softc; 174 175static struct mbuf *last_not_for_us; 176 177static int ieprobe(struct isa_device * dvp); 178static int ieattach(struct isa_device * dvp); 179static ointhand2_t ieintr; 180static int sl_probe(struct isa_device * dvp); 181static int el_probe(struct isa_device * dvp); 182static int ni_probe(struct isa_device * dvp); 183static int ee16_probe(struct isa_device * dvp); 184 185static int check_ie_present(int unit, caddr_t where, unsigned size); 186static void ieinit(int unit); 187static void ie_stop(int unit); 188static int ieioctl(struct ifnet * ifp, u_long command, caddr_t data); 189static void iestart(struct ifnet * ifp); 190 191static void el_reset_586(int unit); 192static void el_chan_attn(int unit); 193 194static void sl_reset_586(int unit); 195static void sl_chan_attn(int unit); 196 197static void ee16_reset_586(int unit); 198static void ee16_chan_attn(int unit); 199static __inline void ee16_interrupt_enable(struct ie_softc * ie); 200static void ee16_eeprom_outbits(struct ie_softc * ie, int edata, int cnt); 201static void ee16_eeprom_clock(struct ie_softc * ie, int state); 202static u_short ee16_read_eeprom(struct ie_softc * ie, int location); 203static int ee16_eeprom_inbits(struct ie_softc * ie); 204static void ee16_shutdown(int howto, void *sc); 205 206static void iereset(int unit); 207static void ie_readframe(int unit, struct ie_softc * ie, int bufno); 208static void ie_drop_packet_buffer(int unit, struct ie_softc * ie); 209static void sl_read_ether(int unit, unsigned char addr[6]); 210static void find_ie_mem_size(int unit); 211static void chan_attn_timeout(void *rock); 212static int command_and_wait(int unit, int command, 213 void volatile * pcmd, int); 214static void run_tdr(int unit, struct ie_tdr_cmd * cmd); 215static int ierint(int unit, struct ie_softc * ie); 216static int ietint(int unit, struct ie_softc * ie); 217static int iernr(int unit, struct ie_softc * ie); 218static void start_receiver(int unit); 219static __inline int ieget(int, struct ie_softc *, struct mbuf **, 220 struct ether_header *, int *); 221static caddr_t setup_rfa(caddr_t ptr, struct ie_softc * ie); 222static int mc_setup(int, caddr_t, volatile struct ie_sys_ctl_block *); 223static void ie_mc_reset(int unit); 224 225#ifdef DEBUG 226static void print_rbd(volatile struct ie_recv_buf_desc * rbd); 227 228static int in_ierint = 0; 229static int in_ietint = 0; 230 231#endif 232 233/* 234 * This tells the autoconf code how to set us up. 235 */ 236struct isa_driver iedriver = { 237 ieprobe, ieattach, "ie", 238}; 239 240enum ie_hardware { 241 IE_STARLAN10, 242 IE_EN100, 243 IE_SLFIBER, 244 IE_3C507, 245 IE_NI5210, 246 IE_EE16, 247 IE_UNKNOWN 248}; 249 250static const char *ie_hardware_names[] = { 251 "StarLAN 10", 252 "EN100", 253 "StarLAN Fiber", 254 "3C507", 255 "NI5210", 256 "EtherExpress 16", 257 "Unknown" 258}; 259 260/* 261sizeof(iscp) == 1+1+2+4 == 8 262sizeof(scb) == 2+2+2+2+2+2+2+2 == 16 263NFRAMES * sizeof(rfd) == NFRAMES*(2+2+2+2+6+6+2+2) == NFRAMES*24 == 384 264sizeof(xmit_cmd) == 2+2+2+2+6+2 == 18 265sizeof(transmit buffer) == 1512 266sizeof(transmit buffer desc) == 8 267----- 2681946 269 270NRXBUFS * sizeof(rbd) == NRXBUFS*(2+2+4+2+2) == NRXBUFS*12 271NRXBUFS * IE_RBUF_SIZE == NRXBUFS*256 272 273NRXBUFS should be (16384 - 1946) / (256 + 12) == 14438 / 268 == 53 274 275With NRXBUFS == 48, this leaves us 1574 bytes for another command or 276more buffers. Another transmit command would be 18+8+1512 == 1538 277---just barely fits! 278 279Obviously all these would have to be reduced for smaller memory sizes. 280With a larger memory, it would be possible to roughly double the number of 281both transmit and receive buffers. 282*/ 283 284#define NFRAMES 8 /* number of receive frames */ 285#define NRXBUFS 48 /* number of buffers to allocate */ 286#define IE_RBUF_SIZE 256 /* size of each buffer, MUST BE POWER OF TWO */ 287#define NTXBUFS 2 /* number of transmit commands */ 288#define IE_TBUF_SIZE ETHER_MAX_LEN /* size of transmit buffer */ 289 290/* 291 * Ethernet status, per interface. 292 */ 293static struct ie_softc { 294 struct arpcom arpcom; 295 void (*ie_reset_586) (int); 296 void (*ie_chan_attn) (int); 297 enum ie_hardware hard_type; 298 int hard_vers; 299 300 u_short port; /* i/o base address for this interface */ 301 caddr_t iomem; /* memory size */ 302 caddr_t iomembot; /* memory base address */ 303 unsigned iosize; 304 int bus_use; /* 0 means 16bit, 1 means 8 bit adapter */ 305 306 int want_mcsetup; 307 int promisc; 308 int nframes; 309 int nrxbufs; 310 int ntxbufs; 311 volatile struct ie_int_sys_conf_ptr *iscp; 312 volatile struct ie_sys_ctl_block *scb; 313 volatile struct ie_recv_frame_desc **rframes; /* nframes worth */ 314 volatile struct ie_recv_buf_desc **rbuffs; /* nrxbufs worth */ 315 volatile u_char **cbuffs; /* nrxbufs worth */ 316 int rfhead, rftail, rbhead, rbtail; 317 318 volatile struct ie_xmit_cmd **xmit_cmds; /* ntxbufs worth */ 319 volatile struct ie_xmit_buf **xmit_buffs; /* ntxbufs worth */ 320 u_char **xmit_cbuffs; /* ntxbufs worth */ 321 int xmit_count; 322 323 struct ie_en_addr mcast_addrs[MAXMCAST + 1]; 324 int mcast_count; 325 326 u_short irq_encoded; /* encoded interrupt on IEE16 */ 327} ie_softc[NIE]; 328 329#define MK_24(base, ptr) ((caddr_t)((uintptr_t)ptr - (uintptr_t)base)) 330#define MK_16(base, ptr) ((u_short)(uintptr_t)MK_24(base, ptr)) 331 332#define PORT ie_softc[unit].port 333#define MEM ie_softc[unit].iomem 334 335int 336ieprobe(struct isa_device *dvp) 337{ 338 int ret; 339 340 ret = sl_probe(dvp); 341 if (!ret) 342 ret = el_probe(dvp); 343 if (!ret) 344 ret = ni_probe(dvp); 345 if (!ret) 346 ret = ee16_probe(dvp); 347 348 return (ret); 349} 350 351static int 352sl_probe(struct isa_device *dvp) 353{ 354 int unit = dvp->id_unit; 355 u_char c; 356 357 ie_softc[unit].port = dvp->id_iobase; 358 ie_softc[unit].iomembot = dvp->id_maddr; 359 ie_softc[unit].iomem = 0; 360 ie_softc[unit].bus_use = 0; 361 362 c = inb(PORT + IEATT_REVISION); 363 switch (SL_BOARD(c)) { 364 case SL10_BOARD: 365 ie_softc[unit].hard_type = IE_STARLAN10; 366 ie_softc[unit].ie_reset_586 = sl_reset_586; 367 ie_softc[unit].ie_chan_attn = sl_chan_attn; 368 break; 369 case EN100_BOARD: 370 ie_softc[unit].hard_type = IE_EN100; 371 ie_softc[unit].ie_reset_586 = sl_reset_586; 372 ie_softc[unit].ie_chan_attn = sl_chan_attn; 373 break; 374 case SLFIBER_BOARD: 375 ie_softc[unit].hard_type = IE_SLFIBER; 376 ie_softc[unit].ie_reset_586 = sl_reset_586; 377 ie_softc[unit].ie_chan_attn = sl_chan_attn; 378 break; 379 380 /* 381 * Anything else is not recognized or cannot be used. 382 */ 383 default: 384 return (0); 385 } 386 387 ie_softc[unit].hard_vers = SL_REV(c); 388 389 /* 390 * Divine memory size on-board the card. Ususally 16k. 391 */ 392 find_ie_mem_size(unit); 393 394 if (!ie_softc[unit].iosize) { 395 return (0); 396 } 397 dvp->id_msize = ie_softc[unit].iosize; 398 399 switch (ie_softc[unit].hard_type) { 400 case IE_EN100: 401 case IE_STARLAN10: 402 case IE_SLFIBER: 403 sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr); 404 break; 405 406 default: 407 if (bootverbose) 408 printf("ie%d: unknown AT&T board type code %d\n", unit, 409 ie_softc[unit].hard_type); 410 return (0); 411 } 412 413 return (1); 414} 415 416 417static int 418el_probe(struct isa_device *dvp) 419{ 420 struct ie_softc *sc = &ie_softc[dvp->id_unit]; 421 u_char c; 422 int i; 423 u_char signature[] = "*3COM*"; 424 int unit = dvp->id_unit; 425 426 sc->port = dvp->id_iobase; 427 sc->iomembot = dvp->id_maddr; 428 sc->bus_use = 0; 429 430 /* Need this for part of the probe. */ 431 sc->ie_reset_586 = el_reset_586; 432 sc->ie_chan_attn = el_chan_attn; 433 434 /* Reset and put card in CONFIG state without changing address. */ 435 elink_reset(); 436 outb(ELINK_ID_PORT, 0x00); 437 elink_idseq(ELINK_507_POLY); 438 elink_idseq(ELINK_507_POLY); 439 outb(ELINK_ID_PORT, 0xff); 440 441 c = inb(PORT + IE507_MADDR); 442 if (c & 0x20) { 443#ifdef DEBUG 444 printf("ie%d: can't map 3C507 RAM in high memory\n", unit); 445#endif 446 return (0); 447 } 448 /* go to RUN state */ 449 outb(ELINK_ID_PORT, 0x00); 450 elink_idseq(ELINK_507_POLY); 451 outb(ELINK_ID_PORT, 0x00); 452 453 outb(PORT + IE507_CTRL, EL_CTRL_NRST); 454 455 for (i = 0; i < 6; i++) 456 if (inb(PORT + i) != signature[i]) 457 return (0); 458 459 c = inb(PORT + IE507_IRQ) & 0x0f; 460 461 if (dvp->id_irq != (1 << c)) { 462 printf("ie%d: kernel configured irq %d " 463 "doesn't match board configured irq %d\n", 464 unit, ffs(dvp->id_irq) - 1, c); 465 return (0); 466 } 467 c = (inb(PORT + IE507_MADDR) & 0x1c) + 0xc0; 468 469 if (kvtop(dvp->id_maddr) != ((int) c << 12)) { 470 printf("ie%d: kernel configured maddr %lx " 471 "doesn't match board configured maddr %x\n", 472 unit, kvtop(dvp->id_maddr), (int) c << 12); 473 return (0); 474 } 475 outb(PORT + IE507_CTRL, EL_CTRL_NORMAL); 476 477 sc->hard_type = IE_3C507; 478 sc->hard_vers = 0; /* 3C507 has no version number. */ 479 480 /* 481 * Divine memory size on-board the card. 482 */ 483 find_ie_mem_size(unit); 484 485 if (!sc->iosize) { 486 printf("ie%d: can't find shared memory\n", unit); 487 outb(PORT + IE507_CTRL, EL_CTRL_NRST); 488 return (0); 489 } 490 if (!dvp->id_msize) 491 dvp->id_msize = sc->iosize; 492 else if (dvp->id_msize != sc->iosize) { 493 printf("ie%d: kernel configured msize %d " 494 "doesn't match board configured msize %d\n", 495 unit, dvp->id_msize, sc->iosize); 496 outb(PORT + IE507_CTRL, EL_CTRL_NRST); 497 return (0); 498 } 499 sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr); 500 501 /* Clear the interrupt latch just in case. */ 502 outb(PORT + IE507_ICTRL, 1); 503 504 return (16); 505} 506 507 508static int 509ni_probe(struct isa_device *dvp) 510{ 511 int unit = dvp->id_unit; 512 int boardtype, c; 513 514 ie_softc[unit].port = dvp->id_iobase; 515 ie_softc[unit].iomembot = dvp->id_maddr; 516 ie_softc[unit].iomem = 0; 517 ie_softc[unit].bus_use = 1; 518 519 boardtype = inb(PORT + IEATT_REVISION); 520 c = inb(PORT + IEATT_REVISION + 1); 521 boardtype = boardtype + (c << 8); 522 switch (boardtype) { 523 case 0x5500: /* This is the magic cookie for the NI5210 */ 524 ie_softc[unit].hard_type = IE_NI5210; 525 ie_softc[unit].ie_reset_586 = sl_reset_586; 526 ie_softc[unit].ie_chan_attn = sl_chan_attn; 527 break; 528 529 /* 530 * Anything else is not recognized or cannot be used. 531 */ 532 default: 533 return (0); 534 } 535 536 ie_softc[unit].hard_vers = 0; 537 538 /* 539 * Divine memory size on-board the card. Either 8 or 16k. 540 */ 541 find_ie_mem_size(unit); 542 543 if (!ie_softc[unit].iosize) { 544 return (0); 545 } 546 if (!dvp->id_msize) 547 dvp->id_msize = ie_softc[unit].iosize; 548 else if (dvp->id_msize != ie_softc[unit].iosize) { 549 printf("ie%d: kernel configured msize %d " 550 "doesn't match board configured msize %d\n", 551 unit, dvp->id_msize, ie_softc[unit].iosize); 552 return (0); 553 } 554 sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr); 555 556 return (8); 557 558} 559 560 561static void 562ee16_shutdown(int howto, void *sc) 563{ 564 struct ie_softc *ie = (struct ie_softc *)sc; 565 int unit = ie - &ie_softc[0]; 566 567 ee16_reset_586(unit); 568 outb(PORT + IEE16_ECTRL, IEE16_RESET_ASIC); 569 outb(PORT + IEE16_ECTRL, 0); 570} 571 572 573/* Taken almost exactly from Rod's if_ix.c. */ 574 575int 576ee16_probe(struct isa_device *dvp) 577{ 578 struct ie_softc *sc = &ie_softc[dvp->id_unit]; 579 580 int i; 581 int unit = dvp->id_unit; 582 u_short board_id, id_var1, id_var2, checksum = 0; 583 u_short eaddrtemp, irq; 584 u_short pg, adjust, decode, edecode; 585 u_char bart_config; 586 u_long bd_maddr; 587 588 short irq_translate[] = {0, IRQ9, IRQ3, IRQ4, IRQ5, IRQ10, IRQ11, 0}; 589 char irq_encode[] = {0, 0, 0, 2, 3, 4, 0, 0, 0, 1, 5, 6, 0, 0, 0, 0}; 590 591 /* Need this for part of the probe. */ 592 sc->ie_reset_586 = ee16_reset_586; 593 sc->ie_chan_attn = ee16_chan_attn; 594 595 /* unsure if this is necessary */ 596 sc->bus_use = 0; 597 598 /* reset any ee16 at the current iobase */ 599 outb(dvp->id_iobase + IEE16_ECTRL, IEE16_RESET_ASIC); 600 outb(dvp->id_iobase + IEE16_ECTRL, 0); 601 DELAY(240); 602 603 /* now look for ee16. */ 604 board_id = id_var1 = id_var2 = 0; 605 for (i = 0; i < 4; i++) { 606 id_var1 = inb(dvp->id_iobase + IEE16_ID_PORT); 607 id_var2 = ((id_var1 & 0x03) << 2); 608 board_id |= ((id_var1 >> 4) << id_var2); 609 } 610 611 if (board_id != IEE16_ID) { 612 printf("ie%d: unknown board_id: %x\n", unit, board_id); 613 return (0); 614 } 615 /* need sc->port for ee16_read_eeprom */ 616 sc->port = dvp->id_iobase; 617 sc->hard_type = IE_EE16; 618 619 /* 620 * The shared RAM location on the EE16 is encoded into bits 3-7 of 621 * EEPROM location 6. We zero the upper byte, and shift the 5 bits 622 * right 3. The resulting number tells us the RAM location. 623 * Because the EE16 supports either 16k or 32k of shared RAM, we 624 * only worry about the 32k locations. 625 * 626 * NOTE: if a 64k EE16 exists, it should be added to this switch. then 627 * the ia->ia_msize would need to be set per case statement. 628 * 629 * value msize location ===== ===== ======== 0x03 0x8000 630 * 0xCC000 0x06 0x8000 0xD0000 0x0C 0x8000 0xD4000 0x18 631 * 0x8000 0xD8000 632 * 633 */ 634 635 bd_maddr = 0; 636 i = (ee16_read_eeprom(sc, 6) & 0x00ff) >> 3; 637 switch (i) { 638 case 0x03: 639 bd_maddr = 0xCC000; 640 break; 641 case 0x06: 642 bd_maddr = 0xD0000; 643 break; 644 case 0x0c: 645 bd_maddr = 0xD4000; 646 break; 647 case 0x18: 648 bd_maddr = 0xD8000; 649 break; 650 default: 651 bd_maddr = 0; 652 break; 653 } 654 dvp->id_msize = 0x8000; 655 if (kvtop(dvp->id_maddr) != bd_maddr) { 656 printf("ie%d: kernel configured maddr %lx " 657 "doesn't match board configured maddr %lx\n", 658 unit, kvtop(dvp->id_maddr), bd_maddr); 659 } 660 sc->iomembot = dvp->id_maddr; 661 sc->iomem = 0; /* XXX some probes set this and some don't */ 662 sc->iosize = dvp->id_msize; 663 664 /* need to put the 586 in RESET while we access the eeprom. */ 665 outb(PORT + IEE16_ECTRL, IEE16_RESET_586); 666 667 /* read the eeprom and checksum it, should == IEE16_ID */ 668 for (i = 0; i < 0x40; i++) 669 checksum += ee16_read_eeprom(sc, i); 670 671 if (checksum != IEE16_ID) { 672 printf("ie%d: invalid eeprom checksum: %x\n", unit, checksum); 673 return (0); 674 } 675 /* 676 * Size and test the memory on the board. The size of the memory 677 * can be one of 16k, 32k, 48k or 64k. It can be located in the 678 * address range 0xC0000 to 0xEFFFF on 16k boundaries. 679 * 680 * If the size does not match the passed in memory allocation size 681 * issue a warning, but continue with the minimum of the two sizes. 682 */ 683 684 switch (dvp->id_msize) { 685 case 65536: 686 case 32768: /* XXX Only support 32k and 64k right now */ 687 break; 688 case 16384: 689 case 49512: 690 default: 691 printf("ie%d: mapped memory size %d not supported\n", unit, 692 dvp->id_msize); 693 return (0); 694 break; /* NOTREACHED */ 695 } 696 697 if ((kvtop(dvp->id_maddr) < 0xC0000) || 698 (kvtop(dvp->id_maddr) + sc->iosize > 0xF0000)) { 699 printf("ie%d: mapped memory location %p out of range\n", unit, 700 (void *)dvp->id_maddr); 701 return (0); 702 } 703 pg = (kvtop(dvp->id_maddr) & 0x3C000) >> 14; 704 adjust = IEE16_MCTRL_FMCS16 | (pg & 0x3) << 2; 705 decode = ((1 << (sc->iosize / 16384)) - 1) << pg; 706 edecode = ((~decode >> 4) & 0xF0) | (decode >> 8); 707 708 /* ZZZ This should be checked against eeprom location 6, low byte */ 709 outb(PORT + IEE16_MEMDEC, decode & 0xFF); 710 /* ZZZ This should be checked against eeprom location 1, low byte */ 711 outb(PORT + IEE16_MCTRL, adjust); 712 /* ZZZ Now if I could find this one I would have it made */ 713 outb(PORT + IEE16_MPCTRL, (~decode & 0xFF)); 714 /* ZZZ I think this is location 6, high byte */ 715 outb(PORT + IEE16_MECTRL, edecode); /* XXX disable Exxx */ 716 717 (void) kvtop(dvp->id_maddr); 718 719 /* 720 * first prime the stupid bart DRAM controller so that it works, 721 * then zero out all of memory. 722 */ 723 bzero(sc->iomembot, 32); 724 bzero(sc->iomembot, sc->iosize); 725 726 /* 727 * Get the encoded interrupt number from the EEPROM, check it 728 * against the passed in IRQ. Issue a warning if they do not match. 729 * Always use the passed in IRQ, not the one in the EEPROM. 730 */ 731 irq = ee16_read_eeprom(sc, IEE16_EEPROM_CONFIG1); 732 irq = (irq & IEE16_EEPROM_IRQ) >> IEE16_EEPROM_IRQ_SHIFT; 733 irq = irq_translate[irq]; 734 if (dvp->id_irq > 0) { 735 if (irq != dvp->id_irq) { 736 printf("ie%d: WARNING: board configured " 737 "at irq %u, using %u\n", 738 dvp->id_unit, dvp->id_irq, irq); 739 irq = dvp->id_unit; 740 } 741 } else { 742 dvp->id_irq = irq; 743 } 744 sc->irq_encoded = irq_encode[ffs(irq) - 1]; 745 746 /* 747 * Get the hardware ethernet address from the EEPROM and save it in 748 * the softc for use by the 586 setup code. 749 */ 750 eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_HIGH); 751 sc->arpcom.ac_enaddr[1] = eaddrtemp & 0xFF; 752 sc->arpcom.ac_enaddr[0] = eaddrtemp >> 8; 753 eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_MID); 754 sc->arpcom.ac_enaddr[3] = eaddrtemp & 0xFF; 755 sc->arpcom.ac_enaddr[2] = eaddrtemp >> 8; 756 eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_LOW); 757 sc->arpcom.ac_enaddr[5] = eaddrtemp & 0xFF; 758 sc->arpcom.ac_enaddr[4] = eaddrtemp >> 8; 759 760 /* disable the board interrupts */ 761 outb(PORT + IEE16_IRQ, sc->irq_encoded); 762 763 /* enable loopback to keep bad packets off the wire */ 764 if (sc->hard_type == IE_EE16) { 765 bart_config = inb(PORT + IEE16_CONFIG); 766 bart_config |= IEE16_BART_LOOPBACK; 767 bart_config |= IEE16_BART_MCS16_TEST;/* inb doesn't get bit! */ 768 outb(PORT + IEE16_CONFIG, bart_config); 769 bart_config = inb(PORT + IEE16_CONFIG); 770 } 771 /* take the board out of reset state */ 772 outb(PORT + IEE16_ECTRL, 0); 773 DELAY(100); 774 775 if (!check_ie_present(unit, dvp->id_maddr, sc->iosize)) 776 return (0); 777 778 return (16); /* return the number of I/O ports */ 779} 780 781/* 782 * Taken almost exactly from Bill's if_is.c, then modified beyond recognition. 783 */ 784int 785ieattach(struct isa_device *dvp) 786{ 787 int factor; 788 int unit = dvp->id_unit; 789 struct ie_softc *ie = &ie_softc[unit]; 790 struct ifnet *ifp = &ie->arpcom.ac_if; 791 size_t allocsize; 792 793 dvp->id_ointr = ieintr; 794 795 /* 796 * based on the amount of memory we have, allocate our tx and rx 797 * resources. 798 */ 799 factor = dvp->id_msize / 16384; 800 ie->nframes = factor * NFRAMES; 801 ie->nrxbufs = factor * NRXBUFS; 802 ie->ntxbufs = factor * NTXBUFS; 803 804 /* 805 * Since all of these guys are arrays of pointers, allocate as one 806 * big chunk and dole out accordingly. 807 */ 808 allocsize = sizeof(void *) * (ie->nframes 809 + (ie->nrxbufs * 2) 810 + (ie->ntxbufs * 3)); 811 ie->rframes = (volatile struct ie_recv_frame_desc **) malloc(allocsize, 812 M_DEVBUF, 813 M_NOWAIT); 814 if (ie->rframes == NULL) 815 return (0); 816 ie->rbuffs = 817 (volatile struct ie_recv_buf_desc **)&ie->rframes[ie->nframes]; 818 ie->cbuffs = (volatile u_char **)&ie->rbuffs[ie->nrxbufs]; 819 ie->xmit_cmds = 820 (volatile struct ie_xmit_cmd **)&ie->cbuffs[ie->nrxbufs]; 821 ie->xmit_buffs = 822 (volatile struct ie_xmit_buf **)&ie->xmit_cmds[ie->ntxbufs]; 823 ie->xmit_cbuffs = (u_char **)&ie->xmit_buffs[ie->ntxbufs]; 824 825 ifp->if_softc = ie; 826 ifp->if_unit = unit; 827 ifp->if_name = iedriver.name; 828 ifp->if_mtu = ETHERMTU; 829 printf("ie%d: <%s R%d> address %6D\n", unit, 830 ie_hardware_names[ie->hard_type], 831 ie->hard_vers + 1, 832 ie->arpcom.ac_enaddr, ":"); 833 834 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 835 ifp->if_output = ether_output; 836 ifp->if_start = iestart; 837 ifp->if_ioctl = ieioctl; 838 ifp->if_type = IFT_ETHER; 839 ifp->if_addrlen = 6; 840 ifp->if_hdrlen = 14; 841 842 if (ie->hard_type == IE_EE16) 843 at_shutdown(ee16_shutdown, ie, SHUTDOWN_POST_SYNC); 844 845#if NBPFILTER > 0 846 bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header)); 847#endif 848 849 if_attach(ifp); 850 ether_ifattach(ifp); 851 return (1); 852} 853 854/* 855 * What to do upon receipt of an interrupt. 856 */ 857static void 858ieintr(int unit) 859{ 860 register struct ie_softc *ie = &ie_softc[unit]; 861 register u_short status; 862 863 /* Clear the interrupt latch on the 3C507. */ 864 if (ie->hard_type == IE_3C507 865 && (inb(PORT + IE507_CTRL) & EL_CTRL_INTL)) 866 outb(PORT + IE507_ICTRL, 1); 867 868 /* disable interrupts on the EE16. */ 869 if (ie->hard_type == IE_EE16) 870 outb(PORT + IEE16_IRQ, ie->irq_encoded); 871 872 status = ie->scb->ie_status; 873 874loop: 875 876 /* Don't ack interrupts which we didn't receive */ 877 ie_ack(ie->scb, IE_ST_WHENCE & status, unit, ie->ie_chan_attn); 878 879 if (status & (IE_ST_RECV | IE_ST_RNR)) { 880#ifdef DEBUG 881 in_ierint++; 882 if (ie_debug & IED_RINT) 883 printf("ie%d: rint\n", unit); 884#endif 885 ierint(unit, ie); 886#ifdef DEBUG 887 in_ierint--; 888#endif 889 } 890 if (status & IE_ST_DONE) { 891#ifdef DEBUG 892 in_ietint++; 893 if (ie_debug & IED_TINT) 894 printf("ie%d: tint\n", unit); 895#endif 896 ietint(unit, ie); 897#ifdef DEBUG 898 in_ietint--; 899#endif 900 } 901 if (status & IE_ST_RNR) { 902#ifdef DEBUG 903 if (ie_debug & IED_RNR) 904 printf("ie%d: rnr\n", unit); 905#endif 906 iernr(unit, ie); 907 } 908#ifdef DEBUG 909 if ((status & IE_ST_ALLDONE) 910 && (ie_debug & IED_CNA)) 911 printf("ie%d: cna\n", unit); 912#endif 913 914 if ((status = ie->scb->ie_status) & IE_ST_WHENCE) 915 goto loop; 916 917 /* Clear the interrupt latch on the 3C507. */ 918 if (ie->hard_type == IE_3C507) 919 outb(PORT + IE507_ICTRL, 1); 920 921 /* enable interrupts on the EE16. */ 922 if (ie->hard_type == IE_EE16) 923 outb(PORT + IEE16_IRQ, ie->irq_encoded | IEE16_IRQ_ENABLE); 924 925} 926 927/* 928 * Process a received-frame interrupt. 929 */ 930static int 931ierint(int unit, struct ie_softc *ie) 932{ 933 int i, status; 934 static int timesthru = 1024; 935 936 i = ie->rfhead; 937 while (1) { 938 status = ie->rframes[i]->ie_fd_status; 939 940 if ((status & IE_FD_COMPLETE) && (status & IE_FD_OK)) { 941 ie->arpcom.ac_if.if_ipackets++; 942 if (!--timesthru) { 943 ie->arpcom.ac_if.if_ierrors += 944 ie->scb->ie_err_crc + 945 ie->scb->ie_err_align + 946 ie->scb->ie_err_resource + 947 ie->scb->ie_err_overrun; 948 ie->scb->ie_err_crc = 0; 949 ie->scb->ie_err_align = 0; 950 ie->scb->ie_err_resource = 0; 951 ie->scb->ie_err_overrun = 0; 952 timesthru = 1024; 953 } 954 ie_readframe(unit, ie, i); 955 } else { 956 if (status & IE_FD_RNR) { 957 if (!(ie->scb->ie_status & IE_RU_READY)) { 958 ie->rframes[0]->ie_fd_next = 959 MK_16(MEM, ie->rbuffs[0]); 960 ie->scb->ie_recv_list = 961 MK_16(MEM, ie->rframes[0]); 962 command_and_wait(unit, IE_RU_START, 963 0, 0); 964 } 965 } 966 break; 967 } 968 i = (i + 1) % ie->nframes; 969 } 970 return (0); 971} 972 973/* 974 * Process a command-complete interrupt. These are only generated by 975 * the transmission of frames. This routine is deceptively simple, since 976 * most of the real work is done by iestart(). 977 */ 978static int 979ietint(int unit, struct ie_softc *ie) 980{ 981 int status; 982 int i; 983 984 ie->arpcom.ac_if.if_timer = 0; 985 ie->arpcom.ac_if.if_flags &= ~IFF_OACTIVE; 986 987 for (i = 0; i < ie->xmit_count; i++) { 988 status = ie->xmit_cmds[i]->ie_xmit_status; 989 990 if (status & IE_XS_LATECOLL) { 991 printf("ie%d: late collision\n", unit); 992 ie->arpcom.ac_if.if_collisions++; 993 ie->arpcom.ac_if.if_oerrors++; 994 } else if (status & IE_XS_NOCARRIER) { 995 printf("ie%d: no carrier\n", unit); 996 ie->arpcom.ac_if.if_oerrors++; 997 } else if (status & IE_XS_LOSTCTS) { 998 printf("ie%d: lost CTS\n", unit); 999 ie->arpcom.ac_if.if_oerrors++; 1000 } else if (status & IE_XS_UNDERRUN) { 1001 printf("ie%d: DMA underrun\n", unit); 1002 ie->arpcom.ac_if.if_oerrors++; 1003 } else if (status & IE_XS_EXCMAX) { 1004 printf("ie%d: too many collisions\n", unit); 1005 ie->arpcom.ac_if.if_collisions += 16; 1006 ie->arpcom.ac_if.if_oerrors++; 1007 } else { 1008 ie->arpcom.ac_if.if_opackets++; 1009 ie->arpcom.ac_if.if_collisions += status & IE_XS_MAXCOLL; 1010 } 1011 } 1012 ie->xmit_count = 0; 1013 1014 /* 1015 * If multicast addresses were added or deleted while we were 1016 * transmitting, ie_mc_reset() set the want_mcsetup flag indicating 1017 * that we should do it. 1018 */ 1019 if (ie->want_mcsetup) { 1020 mc_setup(unit, (caddr_t) ie->xmit_cbuffs[0], ie->scb); 1021 ie->want_mcsetup = 0; 1022 } 1023 /* Wish I knew why this seems to be necessary... */ 1024 ie->xmit_cmds[0]->ie_xmit_status |= IE_STAT_COMPL; 1025 1026 iestart(&ie->arpcom.ac_if); 1027 return (0); /* shouldn't be necessary */ 1028} 1029 1030/* 1031 * Process a receiver-not-ready interrupt. I believe that we get these 1032 * when there aren't enough buffers to go around. For now (FIXME), we 1033 * just restart the receiver, and hope everything's ok. 1034 */ 1035static int 1036iernr(int unit, struct ie_softc *ie) 1037{ 1038#ifdef doesnt_work 1039 setup_rfa((caddr_t) ie->rframes[0], ie); 1040 1041 ie->scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]); 1042 command_and_wait(unit, IE_RU_START, 0, 0); 1043#else 1044 /* This doesn't work either, but it doesn't hang either. */ 1045 command_and_wait(unit, IE_RU_DISABLE, 0, 0); /* just in case */ 1046 setup_rfa((caddr_t) ie->rframes[0], ie); /* ignore cast-qual */ 1047 1048 ie->scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]); 1049 command_and_wait(unit, IE_RU_START, 0, 0); /* was ENABLE */ 1050 1051#endif 1052 ie_ack(ie->scb, IE_ST_WHENCE, unit, ie->ie_chan_attn); 1053 1054 ie->arpcom.ac_if.if_ierrors++; 1055 return (0); 1056} 1057 1058/* 1059 * Compare two Ether/802 addresses for equality, inlined and 1060 * unrolled for speed. I'd love to have an inline assembler 1061 * version of this... 1062 */ 1063static __inline int 1064ether_equal(u_char * one, u_char * two) 1065{ 1066 if (one[0] != two[0]) 1067 return (0); 1068 if (one[1] != two[1]) 1069 return (0); 1070 if (one[2] != two[2]) 1071 return (0); 1072 if (one[3] != two[3]) 1073 return (0); 1074 if (one[4] != two[4]) 1075 return (0); 1076 if (one[5] != two[5]) 1077 return (0); 1078 return 1; 1079} 1080 1081/* 1082 * Check for a valid address. to_bpf is filled in with one of the following: 1083 * 0 -> BPF doesn't get this packet 1084 * 1 -> BPF does get this packet 1085 * 2 -> BPF does get this packet, but we don't 1086 * Return value is true if the packet is for us, and false otherwise. 1087 * 1088 * This routine is a mess, but it's also critical that it be as fast 1089 * as possible. It could be made cleaner if we can assume that the 1090 * only client which will fiddle with IFF_PROMISC is BPF. This is 1091 * probably a good assumption, but we do not make it here. (Yet.) 1092 */ 1093static __inline int 1094check_eh(struct ie_softc * ie, struct ether_header * eh, int *to_bpf) 1095{ 1096 int i; 1097 1098 switch (ie->promisc) { 1099 case IFF_ALLMULTI: 1100 /* 1101 * Receiving all multicasts, but no unicasts except those 1102 * destined for us. 1103 */ 1104#if NBPFILTER > 0 1105 /* BPF gets this packet if anybody cares */ 1106 *to_bpf = (ie->arpcom.ac_if.if_bpf != 0); 1107#endif 1108 if (eh->ether_dhost[0] & 1) { 1109 return (1); 1110 } 1111 if (ether_equal(eh->ether_dhost, ie->arpcom.ac_enaddr)) 1112 return (1); 1113 return (0); 1114 1115 case IFF_PROMISC: 1116 /* 1117 * Receiving all packets. These need to be passed on to 1118 * BPF. 1119 */ 1120#if NBPFILTER > 0 1121 *to_bpf = (ie->arpcom.ac_if.if_bpf != 0); 1122#endif 1123 /* If for us, accept and hand up to BPF */ 1124 if (ether_equal(eh->ether_dhost, ie->arpcom.ac_enaddr)) 1125 return (1); 1126 1127#if NBPFILTER > 0 1128 if (*to_bpf) 1129 *to_bpf = 2; /* we don't need to see it */ 1130#endif 1131 1132 /* 1133 * Not a multicast, so BPF wants to see it but we don't. 1134 */ 1135 if (!(eh->ether_dhost[0] & 1)) 1136 return (1); 1137 1138 /* 1139 * If it's one of our multicast groups, accept it and pass 1140 * it up. 1141 */ 1142 for (i = 0; i < ie->mcast_count; i++) { 1143 if (ether_equal(eh->ether_dhost, 1144 (u_char *)&ie->mcast_addrs[i])) { 1145#if NBPFILTER > 0 1146 if (*to_bpf) 1147 *to_bpf = 1; 1148#endif 1149 return (1); 1150 } 1151 } 1152 return (1); 1153 1154 case IFF_ALLMULTI | IFF_PROMISC: 1155 /* 1156 * Acting as a multicast router, and BPF running at the same 1157 * time. Whew! (Hope this is a fast machine...) 1158 */ 1159#if NBPFILTER > 0 1160 *to_bpf = (ie->arpcom.ac_if.if_bpf != 0); 1161#endif 1162 /* We want to see multicasts. */ 1163 if (eh->ether_dhost[0] & 1) 1164 return (1); 1165 1166 /* We want to see our own packets */ 1167 if (ether_equal(eh->ether_dhost, ie->arpcom.ac_enaddr)) 1168 return (1); 1169 1170 /* Anything else goes to BPF but nothing else. */ 1171#if NBPFILTER > 0 1172 if (*to_bpf) 1173 *to_bpf = 2; 1174#endif 1175 return (1); 1176 1177 default: 1178 /* 1179 * Only accept unicast packets destined for us, or 1180 * multicasts for groups that we belong to. For now, we 1181 * assume that the '586 will only return packets that we 1182 * asked it for. This isn't strictly true (it uses hashing 1183 * for the multicast filter), but it will do in this case, 1184 * and we want to get out of here as quickly as possible. 1185 */ 1186#if NBPFILTER > 0 1187 *to_bpf = (ie->arpcom.ac_if.if_bpf != 0); 1188#endif 1189 return (1); 1190 } 1191 return (0); 1192} 1193 1194/* 1195 * We want to isolate the bits that have meaning... This assumes that 1196 * IE_RBUF_SIZE is an even power of two. If somehow the act_len exceeds 1197 * the size of the buffer, then we are screwed anyway. 1198 */ 1199static __inline int 1200ie_buflen(struct ie_softc * ie, int head) 1201{ 1202 return (ie->rbuffs[head]->ie_rbd_actual 1203 & (IE_RBUF_SIZE | (IE_RBUF_SIZE - 1))); 1204} 1205 1206static __inline int 1207ie_packet_len(int unit, struct ie_softc * ie) 1208{ 1209 int i; 1210 int head = ie->rbhead; 1211 int acc = 0; 1212 1213 do { 1214 if (!(ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_USED)) { 1215#ifdef DEBUG 1216 print_rbd(ie->rbuffs[ie->rbhead]); 1217#endif 1218 log(LOG_ERR, 1219 "ie%d: receive descriptors out of sync at %d\n", 1220 unit, ie->rbhead); 1221 iereset(unit); 1222 return (-1); 1223 } 1224 i = ie->rbuffs[head]->ie_rbd_actual & IE_RBD_LAST; 1225 1226 acc += ie_buflen(ie, head); 1227 head = (head + 1) % ie->nrxbufs; 1228 } while (!i); 1229 1230 return (acc); 1231} 1232 1233/* 1234 * Read data off the interface, and turn it into an mbuf chain. 1235 * 1236 * This code is DRAMATICALLY different from the previous version; this 1237 * version tries to allocate the entire mbuf chain up front, given the 1238 * length of the data available. This enables us to allocate mbuf 1239 * clusters in many situations where before we would have had a long 1240 * chain of partially-full mbufs. This should help to speed up the 1241 * operation considerably. (Provided that it works, of course.) 1242 */ 1243static __inline int 1244ieget(int unit, struct ie_softc *ie, struct mbuf **mp, 1245 struct ether_header *ehp, int *to_bpf) 1246{ 1247 struct mbuf *m, *top, **mymp; 1248 int i; 1249 int offset; 1250 int totlen, resid; 1251 int thismboff; 1252 int head; 1253 1254 totlen = ie_packet_len(unit, ie); 1255 if (totlen <= 0) 1256 return (-1); 1257 1258 i = ie->rbhead; 1259 1260 /* 1261 * Snarf the Ethernet header. 1262 */ 1263 bcopy((caddr_t) ie->cbuffs[i], (caddr_t) ehp, sizeof *ehp); 1264 /* ignore cast-qual warning here */ 1265 1266 /* 1267 * As quickly as possible, check if this packet is for us. If not, 1268 * don't waste a single cycle copying the rest of the packet in. 1269 * This is only a consideration when FILTER is defined; i.e., when 1270 * we are either running BPF or doing multicasting. 1271 */ 1272 if (!check_eh(ie, ehp, to_bpf)) { 1273 ie_drop_packet_buffer(unit, ie); 1274 ie->arpcom.ac_if.if_ierrors--; /* just this case, it's not an 1275 * error 1276 */ 1277 return (-1); 1278 } 1279 totlen -= (offset = sizeof *ehp); 1280 1281 MGETHDR(*mp, M_DONTWAIT, MT_DATA); 1282 if (!*mp) { 1283 ie_drop_packet_buffer(unit, ie); 1284 return (-1); 1285 } 1286 m = *mp; 1287 m->m_pkthdr.rcvif = &ie->arpcom.ac_if; 1288 m->m_len = MHLEN; 1289 resid = m->m_pkthdr.len = totlen; 1290 top = 0; 1291 mymp = ⊤ 1292 1293 /* 1294 * This loop goes through and allocates mbufs for all the data we 1295 * will be copying in. It does not actually do the copying yet. 1296 */ 1297 do { /* while(resid > 0) */ 1298 /* 1299 * Try to allocate an mbuf to hold the data that we have. 1300 * If we already allocated one, just get another one and 1301 * stick it on the end (eventually). If we don't already 1302 * have one, try to allocate an mbuf cluster big enough to 1303 * hold the whole packet, if we think it's reasonable, or a 1304 * single mbuf which may or may not be big enough. Got that? 1305 */ 1306 if (top) { 1307 MGET(m, M_DONTWAIT, MT_DATA); 1308 if (!m) { 1309 m_freem(top); 1310 ie_drop_packet_buffer(unit, ie); 1311 return (-1); 1312 } 1313 m->m_len = MLEN; 1314 } 1315 if (resid >= MINCLSIZE) { 1316 MCLGET(m, M_DONTWAIT); 1317 if (m->m_flags & M_EXT) 1318 m->m_len = min(resid, MCLBYTES); 1319 } else { 1320 if (resid < m->m_len) { 1321 if (!top && resid + max_linkhdr <= m->m_len) 1322 m->m_data += max_linkhdr; 1323 m->m_len = resid; 1324 } 1325 } 1326 resid -= m->m_len; 1327 *mymp = m; 1328 mymp = &m->m_next; 1329 } while (resid > 0); 1330 1331 resid = totlen; 1332 m = top; 1333 thismboff = 0; 1334 head = ie->rbhead; 1335 1336 /* 1337 * Now we take the mbuf chain (hopefully only one mbuf most of the 1338 * time) and stuff the data into it. There are no possible failures 1339 * at or after this point. 1340 */ 1341 while (resid > 0) { /* while there's stuff left */ 1342 int thislen = ie_buflen(ie, head) - offset; 1343 1344 /* 1345 * If too much data for the current mbuf, then fill the 1346 * current one up, go to the next one, and try again. 1347 */ 1348 if (thislen > m->m_len - thismboff) { 1349 int newlen = m->m_len - thismboff; 1350 1351 bcopy((caddr_t) (ie->cbuffs[head] + offset), 1352 mtod(m, caddr_t) +thismboff, (unsigned) newlen); 1353 /* ignore cast-qual warning */ 1354 m = m->m_next; 1355 thismboff = 0; /* new mbuf, so no offset */ 1356 offset += newlen; /* we are now this far into 1357 * the packet */ 1358 resid -= newlen; /* so there is this much left 1359 * to get */ 1360 continue; 1361 } 1362 /* 1363 * If there is more than enough space in the mbuf to hold 1364 * the contents of this buffer, copy everything in, advance 1365 * pointers, and so on. 1366 */ 1367 if (thislen < m->m_len - thismboff) { 1368 bcopy((caddr_t) (ie->cbuffs[head] + offset), 1369 mtod(m, caddr_t) +thismboff, (unsigned) thislen); 1370 thismboff += thislen; /* we are this far into the 1371 * mbuf */ 1372 resid -= thislen; /* and this much is left */ 1373 goto nextbuf; 1374 } 1375 /* 1376 * Otherwise, there is exactly enough space to put this 1377 * buffer's contents into the current mbuf. Do the 1378 * combination of the above actions. 1379 */ 1380 bcopy((caddr_t) (ie->cbuffs[head] + offset), 1381 mtod(m, caddr_t) + thismboff, (unsigned) thislen); 1382 m = m->m_next; 1383 thismboff = 0; /* new mbuf, start at the beginning */ 1384 resid -= thislen; /* and we are this far through */ 1385 1386 /* 1387 * Advance all the pointers. We can get here from either of 1388 * the last two cases, but never the first. 1389 */ 1390nextbuf: 1391 offset = 0; 1392 ie->rbuffs[head]->ie_rbd_actual = 0; 1393 ie->rbuffs[head]->ie_rbd_length |= IE_RBD_LAST; 1394 ie->rbhead = head = (head + 1) % ie->nrxbufs; 1395 ie->rbuffs[ie->rbtail]->ie_rbd_length &= ~IE_RBD_LAST; 1396 ie->rbtail = (ie->rbtail + 1) % ie->nrxbufs; 1397 } 1398 1399 /* 1400 * Unless something changed strangely while we were doing the copy, 1401 * we have now copied everything in from the shared memory. This 1402 * means that we are done. 1403 */ 1404 return (0); 1405} 1406 1407/* 1408 * Read frame NUM from unit UNIT (pre-cached as IE). 1409 * 1410 * This routine reads the RFD at NUM, and copies in the buffers from 1411 * the list of RBD, then rotates the RBD and RFD lists so that the receiver 1412 * doesn't start complaining. Trailers are DROPPED---there's no point 1413 * in wasting time on confusing code to deal with them. Hopefully, 1414 * this machine will never ARP for trailers anyway. 1415 */ 1416static void 1417ie_readframe(int unit, struct ie_softc *ie, int num/* frame number to read */) 1418{ 1419 struct ie_recv_frame_desc rfd; 1420 struct mbuf *m = 0; 1421 struct ether_header eh; 1422 1423#if NBPFILTER > 0 1424 int bpf_gets_it = 0; 1425 1426#endif 1427 1428 bcopy((caddr_t) (ie->rframes[num]), &rfd, 1429 sizeof(struct ie_recv_frame_desc)); 1430 1431 /* 1432 * Immediately advance the RFD list, since we we have copied ours 1433 * now. 1434 */ 1435 ie->rframes[num]->ie_fd_status = 0; 1436 ie->rframes[num]->ie_fd_last |= IE_FD_LAST; 1437 ie->rframes[ie->rftail]->ie_fd_last &= ~IE_FD_LAST; 1438 ie->rftail = (ie->rftail + 1) % ie->nframes; 1439 ie->rfhead = (ie->rfhead + 1) % ie->nframes; 1440 1441 if (rfd.ie_fd_status & IE_FD_OK) { 1442#if NBPFILTER > 0 1443 if (ieget(unit, ie, &m, &eh, &bpf_gets_it)) { 1444#else 1445 if (ieget(unit, ie, &m, &eh, (int *)0)) { 1446#endif 1447 ie->arpcom.ac_if.if_ierrors++; /* this counts as an 1448 * error */ 1449 return; 1450 } 1451 } 1452#ifdef DEBUG 1453 if (ie_debug & IED_READFRAME) { 1454 printf("ie%d: frame from ether %6D type %x\n", unit, 1455 eh.ether_shost, ":", (unsigned) eh.ether_type); 1456 } 1457 if (ntohs(eh.ether_type) > ETHERTYPE_TRAIL 1458 && ntohs(eh.ether_type) < (ETHERTYPE_TRAIL + ETHERTYPE_NTRAILER)) 1459 printf("received trailer!\n"); 1460#endif 1461 1462 if (!m) 1463 return; 1464 1465 if (last_not_for_us) { 1466 m_freem(last_not_for_us); 1467 last_not_for_us = 0; 1468 } 1469#if NBPFILTER > 0 1470 /* 1471 * Check for a BPF filter; if so, hand it up. Note that we have to 1472 * stick an extra mbuf up front, because bpf_mtap expects to have 1473 * the ether header at the front. It doesn't matter that this 1474 * results in an ill-formatted mbuf chain, since BPF just looks at 1475 * the data. (It doesn't try to free the mbuf, tho' it will make a 1476 * copy for tcpdump.) 1477 */ 1478 if (bpf_gets_it) { 1479 struct mbuf m0; 1480 1481 m0.m_len = sizeof eh; 1482 m0.m_data = (caddr_t)&eh; 1483 m0.m_next = m; 1484 1485 /* Pass it up */ 1486 bpf_mtap(&ie->arpcom.ac_if, &m0); 1487 } 1488 /* 1489 * A signal passed up from the filtering code indicating that the 1490 * packet is intended for BPF but not for the protocol machinery. We 1491 * can save a few cycles by not handing it off to them. 1492 */ 1493 if (bpf_gets_it == 2) { 1494 last_not_for_us = m; 1495 return; 1496 } 1497#endif /* NBPFILTER > 0 */ 1498 /* 1499 * In here there used to be code to check destination addresses upon 1500 * receipt of a packet. We have deleted that code, and replaced it 1501 * with code to check the address much earlier in the cycle, before 1502 * copying the data in; this saves us valuable cycles when operating 1503 * as a multicast router or when using BPF. 1504 */ 1505 1506 /* 1507 * Finally pass this packet up to higher layers. 1508 */ 1509 ether_input(&ie->arpcom.ac_if, &eh, m); 1510} 1511 1512static void 1513ie_drop_packet_buffer(int unit, struct ie_softc * ie) 1514{ 1515 int i; 1516 1517 do { 1518 /* 1519 * This means we are somehow out of sync. So, we reset the 1520 * adapter. 1521 */ 1522 if (!(ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_USED)) { 1523#ifdef DEBUG 1524 print_rbd(ie->rbuffs[ie->rbhead]); 1525#endif 1526 log(LOG_ERR, "ie%d: receive descriptors out of sync at %d\n", 1527 unit, ie->rbhead); 1528 iereset(unit); 1529 return; 1530 } 1531 i = ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_LAST; 1532 1533 ie->rbuffs[ie->rbhead]->ie_rbd_length |= IE_RBD_LAST; 1534 ie->rbuffs[ie->rbhead]->ie_rbd_actual = 0; 1535 ie->rbhead = (ie->rbhead + 1) % ie->nrxbufs; 1536 ie->rbuffs[ie->rbtail]->ie_rbd_length &= ~IE_RBD_LAST; 1537 ie->rbtail = (ie->rbtail + 1) % ie->nrxbufs; 1538 } while (!i); 1539} 1540 1541 1542/* 1543 * Start transmission on an interface. 1544 */ 1545static void 1546iestart(struct ifnet *ifp) 1547{ 1548 struct ie_softc *ie = ifp->if_softc; 1549 struct mbuf *m0, *m; 1550 unsigned char *buffer; 1551 u_short len; 1552 1553 /* 1554 * This is not really volatile, in this routine, but it makes gcc 1555 * happy. 1556 */ 1557 volatile u_short *bptr = &ie->scb->ie_command_list; 1558 1559 if (!(ifp->if_flags & IFF_RUNNING)) 1560 return; 1561 if (ifp->if_flags & IFF_OACTIVE) 1562 return; 1563 1564 do { 1565 IF_DEQUEUE(&ie->arpcom.ac_if.if_snd, m); 1566 if (!m) 1567 break; 1568 1569 buffer = ie->xmit_cbuffs[ie->xmit_count]; 1570 len = 0; 1571 1572 for (m0 = m; m && len < IE_BUF_LEN; m = m->m_next) { 1573 bcopy(mtod(m, caddr_t), buffer, m->m_len); 1574 buffer += m->m_len; 1575 len += m->m_len; 1576 } 1577 1578 m_freem(m0); 1579 len = max(len, ETHER_MIN_LEN); 1580 1581#if NBPFILTER > 0 1582 /* 1583 * See if bpf is listening on this interface, let it see the 1584 * packet before we commit it to the wire. 1585 */ 1586 if (ie->arpcom.ac_if.if_bpf) 1587 bpf_tap(&ie->arpcom.ac_if, 1588 ie->xmit_cbuffs[ie->xmit_count], len); 1589#endif 1590 1591 ie->xmit_buffs[ie->xmit_count]->ie_xmit_flags = 1592 IE_XMIT_LAST|len; 1593 ie->xmit_buffs[ie->xmit_count]->ie_xmit_next = 0xffff; 1594 ie->xmit_buffs[ie->xmit_count]->ie_xmit_buf = 1595 MK_24(ie->iomem, ie->xmit_cbuffs[ie->xmit_count]); 1596 1597 ie->xmit_cmds[ie->xmit_count]->com.ie_cmd_cmd = IE_CMD_XMIT; 1598 ie->xmit_cmds[ie->xmit_count]->ie_xmit_status = 0; 1599 ie->xmit_cmds[ie->xmit_count]->ie_xmit_desc = 1600 MK_16(ie->iomem, ie->xmit_buffs[ie->xmit_count]); 1601 1602 *bptr = MK_16(ie->iomem, ie->xmit_cmds[ie->xmit_count]); 1603 bptr = &ie->xmit_cmds[ie->xmit_count]->com.ie_cmd_link; 1604 ie->xmit_count++; 1605 } while (ie->xmit_count < ie->ntxbufs); 1606 1607 /* 1608 * If we queued up anything for transmission, send it. 1609 */ 1610 if (ie->xmit_count) { 1611 ie->xmit_cmds[ie->xmit_count - 1]->com.ie_cmd_cmd |= 1612 IE_CMD_LAST | IE_CMD_INTR; 1613 1614 /* 1615 * By passing the command pointer as a null, we tell 1616 * command_and_wait() to pretend that this isn't an action 1617 * command. I wish I understood what was happening here. 1618 */ 1619 command_and_wait(ifp->if_unit, IE_CU_START, 0, 0); 1620 ifp->if_flags |= IFF_OACTIVE; 1621 } 1622 return; 1623} 1624 1625/* 1626 * Check to see if there's an 82586 out there. 1627 */ 1628static int 1629check_ie_present(int unit, caddr_t where, unsigned size) 1630{ 1631 volatile struct ie_sys_conf_ptr *scp; 1632 volatile struct ie_int_sys_conf_ptr *iscp; 1633 volatile struct ie_sys_ctl_block *scb; 1634 u_long realbase; 1635 int s; 1636 1637 s = splimp(); 1638 1639 realbase = (uintptr_t) where + size - (1 << 24); 1640 1641 scp = (volatile struct ie_sys_conf_ptr *) (uintptr_t) 1642 (realbase + IE_SCP_ADDR); 1643 bzero((char *) scp, sizeof *scp); 1644 1645 /* 1646 * First we put the ISCP at the bottom of memory; this tests to make 1647 * sure that our idea of the size of memory is the same as the 1648 * controller's. This is NOT where the ISCP will be in normal 1649 * operation. 1650 */ 1651 iscp = (volatile struct ie_int_sys_conf_ptr *) where; 1652 bzero((char *)iscp, sizeof *iscp); 1653 1654 scb = (volatile struct ie_sys_ctl_block *) where; 1655 bzero((char *)scb, sizeof *scb); 1656 1657 scp->ie_bus_use = ie_softc[unit].bus_use; /* 8-bit or 16-bit */ 1658 scp->ie_iscp_ptr = (caddr_t) ((volatile caddr_t) iscp - 1659 (volatile caddr_t) (volatile uintptr_t) 1660 realbase); 1661 1662 iscp->ie_busy = 1; 1663 iscp->ie_scb_offset = MK_16(realbase, scb) + 256; 1664 1665 (*ie_softc[unit].ie_reset_586) (unit); 1666 (*ie_softc[unit].ie_chan_attn) (unit); 1667 1668 DELAY(100); /* wait a while... */ 1669 1670 if (iscp->ie_busy) { 1671 splx(s); 1672 return (0); 1673 } 1674 /* 1675 * Now relocate the ISCP to its real home, and reset the controller 1676 * again. 1677 */ 1678 iscp = (void *) Align((caddr_t) (uintptr_t) 1679 (realbase + IE_SCP_ADDR - 1680 sizeof(struct ie_int_sys_conf_ptr))); 1681 bzero((char *) iscp, sizeof *iscp); /* ignore cast-qual */ 1682 1683 scp->ie_iscp_ptr = (caddr_t) ((caddr_t) iscp - 1684 (caddr_t) (uintptr_t) realbase); 1685 /* ignore cast-qual */ 1686 1687 iscp->ie_busy = 1; 1688 iscp->ie_scb_offset = MK_16(realbase, scb); 1689 1690 (*ie_softc[unit].ie_reset_586) (unit); 1691 (*ie_softc[unit].ie_chan_attn) (unit); 1692 1693 DELAY(100); 1694 1695 if (iscp->ie_busy) { 1696 splx(s); 1697 return (0); 1698 } 1699 ie_softc[unit].iosize = size; 1700 ie_softc[unit].iomem = (caddr_t) (uintptr_t) realbase; 1701 1702 ie_softc[unit].iscp = iscp; 1703 ie_softc[unit].scb = scb; 1704 1705 /* 1706 * Acknowledge any interrupts we may have caused... 1707 */ 1708 ie_ack(scb, IE_ST_WHENCE, unit, ie_softc[unit].ie_chan_attn); 1709 splx(s); 1710 1711 return (1); 1712} 1713 1714/* 1715 * Divine the memory size of ie board UNIT. 1716 * Better hope there's nothing important hiding just below the ie card... 1717 */ 1718static void 1719find_ie_mem_size(int unit) 1720{ 1721 unsigned size; 1722 1723 ie_softc[unit].iosize = 0; 1724 1725 for (size = 65536; size >= 8192; size -= 8192) { 1726 if (check_ie_present(unit, ie_softc[unit].iomembot, size)) { 1727 return; 1728 } 1729 } 1730 1731 return; 1732} 1733 1734void 1735el_reset_586(int unit) 1736{ 1737 outb(PORT + IE507_CTRL, EL_CTRL_RESET); 1738 DELAY(100); 1739 outb(PORT + IE507_CTRL, EL_CTRL_NORMAL); 1740 DELAY(100); 1741} 1742 1743void 1744sl_reset_586(int unit) 1745{ 1746 outb(PORT + IEATT_RESET, 0); 1747} 1748 1749void 1750ee16_reset_586(int unit) 1751{ 1752 outb(PORT + IEE16_ECTRL, IEE16_RESET_586); 1753 DELAY(100); 1754 outb(PORT + IEE16_ECTRL, 0); 1755 DELAY(100); 1756} 1757 1758void 1759el_chan_attn(int unit) 1760{ 1761 outb(PORT + IE507_ATTN, 1); 1762} 1763 1764void 1765sl_chan_attn(int unit) 1766{ 1767 outb(PORT + IEATT_ATTN, 0); 1768} 1769 1770void 1771ee16_chan_attn(int unit) 1772{ 1773 outb(PORT + IEE16_ATTN, 0); 1774} 1775 1776u_short 1777ee16_read_eeprom(struct ie_softc *sc, int location) 1778{ 1779 int ectrl, edata; 1780 1781 ectrl = inb(sc->port + IEE16_ECTRL); 1782 ectrl &= IEE16_ECTRL_MASK; 1783 ectrl |= IEE16_ECTRL_EECS; 1784 outb(sc->port + IEE16_ECTRL, ectrl); 1785 1786 ee16_eeprom_outbits(sc, IEE16_EEPROM_READ, IEE16_EEPROM_OPSIZE1); 1787 ee16_eeprom_outbits(sc, location, IEE16_EEPROM_ADDR_SIZE); 1788 edata = ee16_eeprom_inbits(sc); 1789 ectrl = inb(sc->port + IEE16_ECTRL); 1790 ectrl &= ~(IEE16_RESET_ASIC | IEE16_ECTRL_EEDI | IEE16_ECTRL_EECS); 1791 outb(sc->port + IEE16_ECTRL, ectrl); 1792 ee16_eeprom_clock(sc, 1); 1793 ee16_eeprom_clock(sc, 0); 1794 return edata; 1795} 1796 1797void 1798ee16_eeprom_outbits(struct ie_softc *sc, int edata, int count) 1799{ 1800 int ectrl, i; 1801 1802 ectrl = inb(sc->port + IEE16_ECTRL); 1803 ectrl &= ~IEE16_RESET_ASIC; 1804 for (i = count - 1; i >= 0; i--) { 1805 ectrl &= ~IEE16_ECTRL_EEDI; 1806 if (edata & (1 << i)) { 1807 ectrl |= IEE16_ECTRL_EEDI; 1808 } 1809 outb(sc->port + IEE16_ECTRL, ectrl); 1810 DELAY(1); /* eeprom data must be setup for 0.4 uSec */ 1811 ee16_eeprom_clock(sc, 1); 1812 ee16_eeprom_clock(sc, 0); 1813 } 1814 ectrl &= ~IEE16_ECTRL_EEDI; 1815 outb(sc->port + IEE16_ECTRL, ectrl); 1816 DELAY(1); /* eeprom data must be held for 0.4 uSec */ 1817} 1818 1819int 1820ee16_eeprom_inbits(struct ie_softc *sc) 1821{ 1822 int ectrl, edata, i; 1823 1824 ectrl = inb(sc->port + IEE16_ECTRL); 1825 ectrl &= ~IEE16_RESET_ASIC; 1826 for (edata = 0, i = 0; i < 16; i++) { 1827 edata = edata << 1; 1828 ee16_eeprom_clock(sc, 1); 1829 ectrl = inb(sc->port + IEE16_ECTRL); 1830 if (ectrl & IEE16_ECTRL_EEDO) { 1831 edata |= 1; 1832 } 1833 ee16_eeprom_clock(sc, 0); 1834 } 1835 return (edata); 1836} 1837 1838void 1839ee16_eeprom_clock(struct ie_softc *sc, int state) 1840{ 1841 int ectrl; 1842 1843 ectrl = inb(sc->port + IEE16_ECTRL); 1844 ectrl &= ~(IEE16_RESET_ASIC | IEE16_ECTRL_EESK); 1845 if (state) { 1846 ectrl |= IEE16_ECTRL_EESK; 1847 } 1848 outb(sc->port + IEE16_ECTRL, ectrl); 1849 DELAY(9); /* EESK must be stable for 8.38 uSec */ 1850} 1851 1852static __inline void 1853ee16_interrupt_enable(struct ie_softc *sc) 1854{ 1855 DELAY(100); 1856 outb(sc->port + IEE16_IRQ, sc->irq_encoded | IEE16_IRQ_ENABLE); 1857 DELAY(100); 1858} 1859 1860void 1861sl_read_ether(int unit, unsigned char addr[6]) 1862{ 1863 int i; 1864 1865 for (i = 0; i < 6; i++) 1866 addr[i] = inb(PORT + i); 1867} 1868 1869 1870static void 1871iereset(int unit) 1872{ 1873 int s = splimp(); 1874 1875 if (unit >= NIE) { 1876 splx(s); 1877 return; 1878 } 1879 printf("ie%d: reset\n", unit); 1880 ie_softc[unit].arpcom.ac_if.if_flags &= ~IFF_UP; 1881 ieioctl(&ie_softc[unit].arpcom.ac_if, SIOCSIFFLAGS, 0); 1882 1883 /* 1884 * Stop i82586 dead in its tracks. 1885 */ 1886 if (command_and_wait(unit, IE_RU_ABORT | IE_CU_ABORT, 0, 0)) 1887 printf("ie%d: abort commands timed out\n", unit); 1888 1889 if (command_and_wait(unit, IE_RU_DISABLE | IE_CU_STOP, 0, 0)) 1890 printf("ie%d: disable commands timed out\n", unit); 1891 1892#ifdef notdef 1893 if (!check_ie_present(unit, ie_softc[unit].iomembot, 1894 e_softc[unit].iosize)) 1895 panic("ie disappeared!"); 1896#endif 1897 1898 ie_softc[unit].arpcom.ac_if.if_flags |= IFF_UP; 1899 ieioctl(&ie_softc[unit].arpcom.ac_if, SIOCSIFFLAGS, 0); 1900 1901 splx(s); 1902 return; 1903} 1904 1905/* 1906 * This is called if we time out. 1907 */ 1908static void 1909chan_attn_timeout(void *rock) 1910{ 1911 *(int *) rock = 1; 1912} 1913 1914/* 1915 * Send a command to the controller and wait for it to either 1916 * complete or be accepted, depending on the command. If the 1917 * command pointer is null, then pretend that the command is 1918 * not an action command. If the command pointer is not null, 1919 * and the command is an action command, wait for 1920 * ((volatile struct ie_cmd_common *)pcmd)->ie_cmd_status & MASK 1921 * to become true. 1922 */ 1923static int 1924command_and_wait(int unit, int cmd, volatile void *pcmd, int mask) 1925{ 1926 volatile struct ie_cmd_common *cc = pcmd; 1927 volatile int timedout = 0; 1928 struct callout_handle ch; 1929 1930 ie_softc[unit].scb->ie_command = (u_short) cmd; 1931 1932 if (IE_ACTION_COMMAND(cmd) && pcmd) { 1933 (*ie_softc[unit].ie_chan_attn) (unit); 1934 1935 /* 1936 * According to the packet driver, the minimum timeout 1937 * should be .369 seconds, which we round up to .37. 1938 */ 1939 ch = timeout(chan_attn_timeout, (caddr_t)&timedout, 1940 37 * hz / 100); 1941 /* ignore cast-qual */ 1942 1943 /* 1944 * Now spin-lock waiting for status. This is not a very 1945 * nice thing to do, but I haven't figured out how, or 1946 * indeed if, we can put the process waiting for action to 1947 * sleep. (We may be getting called through some other 1948 * timeout running in the kernel.) 1949 */ 1950 while (1) { 1951 if ((cc->ie_cmd_status & mask) || timedout) 1952 break; 1953 } 1954 1955 untimeout(chan_attn_timeout, (caddr_t)&timedout, ch); 1956 /* ignore cast-qual */ 1957 1958 return (timedout); 1959 } else { 1960 1961 /* 1962 * Otherwise, just wait for the command to be accepted. 1963 */ 1964 (*ie_softc[unit].ie_chan_attn) (unit); 1965 1966 while (ie_softc[unit].scb->ie_command); /* spin lock */ 1967 1968 return (0); 1969 } 1970} 1971 1972/* 1973 * Run the time-domain reflectometer... 1974 */ 1975static void 1976run_tdr(int unit, struct ie_tdr_cmd *cmd) 1977{ 1978 int result; 1979 1980 cmd->com.ie_cmd_status = 0; 1981 cmd->com.ie_cmd_cmd = IE_CMD_TDR | IE_CMD_LAST; 1982 cmd->com.ie_cmd_link = 0xffff; 1983 cmd->ie_tdr_time = 0; 1984 1985 ie_softc[unit].scb->ie_command_list = MK_16(MEM, cmd); 1986 cmd->ie_tdr_time = 0; 1987 1988 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL)) 1989 result = 0x2000; 1990 else 1991 result = cmd->ie_tdr_time; 1992 1993 ie_ack(ie_softc[unit].scb, IE_ST_WHENCE, unit, 1994 ie_softc[unit].ie_chan_attn); 1995 1996 if (result & IE_TDR_SUCCESS) 1997 return; 1998 1999 if (result & IE_TDR_XCVR) { 2000 printf("ie%d: transceiver problem\n", unit); 2001 } else if (result & IE_TDR_OPEN) { 2002 printf("ie%d: TDR detected an open %d clocks away\n", unit, 2003 result & IE_TDR_TIME); 2004 } else if (result & IE_TDR_SHORT) { 2005 printf("ie%d: TDR detected a short %d clocks away\n", unit, 2006 result & IE_TDR_TIME); 2007 } else { 2008 printf("ie%d: TDR returned unknown status %x\n", unit, result); 2009 } 2010} 2011 2012static void 2013start_receiver(int unit) 2014{ 2015 int s = splimp(); 2016 2017 ie_softc[unit].scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]); 2018 command_and_wait(unit, IE_RU_START, 0, 0); 2019 2020 ie_ack(ie_softc[unit].scb, IE_ST_WHENCE, unit, ie_softc[unit].ie_chan_attn); 2021 2022 splx(s); 2023} 2024 2025/* 2026 * Here is a helper routine for iernr() and ieinit(). This sets up 2027 * the RFA. 2028 */ 2029static caddr_t 2030setup_rfa(caddr_t ptr, struct ie_softc * ie) 2031{ 2032 volatile struct ie_recv_frame_desc *rfd = (void *) ptr; 2033 volatile struct ie_recv_buf_desc *rbd; 2034 int i; 2035 int unit = ie - &ie_softc[0]; 2036 2037 /* First lay them out */ 2038 for (i = 0; i < ie->nframes; i++) { 2039 ie->rframes[i] = rfd; 2040 bzero((char *) rfd, sizeof *rfd); /* ignore cast-qual */ 2041 rfd++; 2042 } 2043 2044 ptr = (caddr_t) Align((caddr_t) rfd); /* ignore cast-qual */ 2045 2046 /* Now link them together */ 2047 for (i = 0; i < ie->nframes; i++) { 2048 ie->rframes[i]->ie_fd_next = 2049 MK_16(MEM, ie->rframes[(i + 1) % ie->nframes]); 2050 } 2051 2052 /* Finally, set the EOL bit on the last one. */ 2053 ie->rframes[ie->nframes - 1]->ie_fd_last |= IE_FD_LAST; 2054 2055 /* 2056 * Now lay out some buffers for the incoming frames. Note that we 2057 * set aside a bit of slop in each buffer, to make sure that we have 2058 * enough space to hold a single frame in every buffer. 2059 */ 2060 rbd = (void *) ptr; 2061 2062 for (i = 0; i < ie->nrxbufs; i++) { 2063 ie->rbuffs[i] = rbd; 2064 bzero((char *)rbd, sizeof *rbd); 2065 ptr = (caddr_t) Align(ptr + sizeof *rbd); 2066 rbd->ie_rbd_length = IE_RBUF_SIZE; 2067 rbd->ie_rbd_buffer = MK_24(MEM, ptr); 2068 ie->cbuffs[i] = (void *) ptr; 2069 ptr += IE_RBUF_SIZE; 2070 rbd = (void *) ptr; 2071 } 2072 2073 /* Now link them together */ 2074 for (i = 0; i < ie->nrxbufs; i++) { 2075 ie->rbuffs[i]->ie_rbd_next = 2076 MK_16(MEM, ie->rbuffs[(i + 1) % ie->nrxbufs]); 2077 } 2078 2079 /* Tag EOF on the last one */ 2080 ie->rbuffs[ie->nrxbufs - 1]->ie_rbd_length |= IE_RBD_LAST; 2081 2082 /* 2083 * We use the head and tail pointers on receive to keep track of the 2084 * order in which RFDs and RBDs are used. 2085 */ 2086 ie->rfhead = 0; 2087 ie->rftail = ie->nframes - 1; 2088 ie->rbhead = 0; 2089 ie->rbtail = ie->nrxbufs - 1; 2090 2091 ie->scb->ie_recv_list = MK_16(MEM, ie->rframes[0]); 2092 ie->rframes[0]->ie_fd_buf_desc = MK_16(MEM, ie->rbuffs[0]); 2093 2094 ptr = Align(ptr); 2095 return (ptr); 2096} 2097 2098/* 2099 * Run the multicast setup command. 2100 * Call at splimp(). 2101 */ 2102static int 2103mc_setup(int unit, caddr_t ptr, 2104 volatile struct ie_sys_ctl_block * scb) 2105{ 2106 struct ie_softc *ie = &ie_softc[unit]; 2107 volatile struct ie_mcast_cmd *cmd = (void *) ptr; 2108 2109 cmd->com.ie_cmd_status = 0; 2110 cmd->com.ie_cmd_cmd = IE_CMD_MCAST | IE_CMD_LAST; 2111 cmd->com.ie_cmd_link = 0xffff; 2112 2113 /* ignore cast-qual */ 2114 bcopy((caddr_t) ie->mcast_addrs, (caddr_t) cmd->ie_mcast_addrs, 2115 ie->mcast_count * sizeof *ie->mcast_addrs); 2116 2117 cmd->ie_mcast_bytes = ie->mcast_count * 6; /* grrr... */ 2118 2119 scb->ie_command_list = MK_16(MEM, cmd); 2120 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL) 2121 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) { 2122 printf("ie%d: multicast address setup command failed\n", unit); 2123 return (0); 2124 } 2125 return (1); 2126} 2127 2128/* 2129 * This routine takes the environment generated by check_ie_present() 2130 * and adds to it all the other structures we need to operate the adapter. 2131 * This includes executing the CONFIGURE, IA-SETUP, and MC-SETUP commands, 2132 * starting the receiver unit, and clearing interrupts. 2133 * 2134 * THIS ROUTINE MUST BE CALLED AT splimp() OR HIGHER. 2135 */ 2136static void 2137ieinit(int unit) 2138{ 2139 struct ie_softc *ie = &ie_softc[unit]; 2140 volatile struct ie_sys_ctl_block *scb = ie->scb; 2141 caddr_t ptr; 2142 int i; 2143 2144 ptr = (caddr_t) Align((caddr_t) scb + sizeof *scb); 2145 2146 /* 2147 * Send the configure command first. 2148 */ 2149 { 2150 volatile struct ie_config_cmd *cmd = (void *) ptr; 2151 2152 ie_setup_config(cmd, ie->promisc, 2153 ie->hard_type == IE_STARLAN10); 2154 cmd->com.ie_cmd_status = 0; 2155 cmd->com.ie_cmd_cmd = IE_CMD_CONFIG | IE_CMD_LAST; 2156 cmd->com.ie_cmd_link = 0xffff; 2157 2158 scb->ie_command_list = MK_16(MEM, cmd); 2159 2160 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL) 2161 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) { 2162 printf("ie%d: configure command failed\n", unit); 2163 return; 2164 } 2165 } 2166 /* 2167 * Now send the Individual Address Setup command. 2168 */ 2169 { 2170 volatile struct ie_iasetup_cmd *cmd = (void *) ptr; 2171 2172 cmd->com.ie_cmd_status = 0; 2173 cmd->com.ie_cmd_cmd = IE_CMD_IASETUP | IE_CMD_LAST; 2174 cmd->com.ie_cmd_link = 0xffff; 2175 2176 bcopy((char *)ie_softc[unit].arpcom.ac_enaddr, 2177 (char *)&cmd->ie_address, sizeof cmd->ie_address); 2178 scb->ie_command_list = MK_16(MEM, cmd); 2179 if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL) 2180 || !(cmd->com.ie_cmd_status & IE_STAT_OK)) { 2181 printf("ie%d: individual address " 2182 "setup command failed\n", unit); 2183 return; 2184 } 2185 } 2186 2187 /* 2188 * Now run the time-domain reflectometer. 2189 */ 2190 run_tdr(unit, (void *) ptr); 2191 2192 /* 2193 * Acknowledge any interrupts we have generated thus far. 2194 */ 2195 ie_ack(ie->scb, IE_ST_WHENCE, unit, ie->ie_chan_attn); 2196 2197 /* 2198 * Set up the RFA. 2199 */ 2200 ptr = setup_rfa(ptr, ie); 2201 2202 /* 2203 * Finally, the transmit command and buffer are the last little bit 2204 * of work. 2205 */ 2206 2207 /* transmit command buffers */ 2208 for (i = 0; i < ie->ntxbufs; i++) { 2209 ie->xmit_cmds[i] = (void *) ptr; 2210 ptr += sizeof *ie->xmit_cmds[i]; 2211 ptr = Align(ptr); 2212 ie->xmit_buffs[i] = (void *)ptr; 2213 ptr += sizeof *ie->xmit_buffs[i]; 2214 ptr = Align(ptr); 2215 } 2216 2217 /* transmit buffers */ 2218 for (i = 0; i < ie->ntxbufs - 1; i++) { 2219 ie->xmit_cbuffs[i] = (void *)ptr; 2220 ptr += IE_BUF_LEN; 2221 ptr = Align(ptr); 2222 } 2223 ie->xmit_cbuffs[ie->ntxbufs - 1] = (void *) ptr; 2224 2225 for (i = 1; i < ie->ntxbufs; i++) { 2226 bzero((caddr_t) ie->xmit_cmds[i], sizeof *ie->xmit_cmds[i]); 2227 bzero((caddr_t) ie->xmit_buffs[i], sizeof *ie->xmit_buffs[i]); 2228 } 2229 2230 /* 2231 * This must be coordinated with iestart() and ietint(). 2232 */ 2233 ie->xmit_cmds[0]->ie_xmit_status = IE_STAT_COMPL; 2234 2235 /* take the ee16 out of loopback */ 2236 if (ie->hard_type == IE_EE16) { 2237 u_int8_t bart_config; 2238 2239 bart_config = inb(PORT + IEE16_CONFIG); 2240 bart_config &= ~IEE16_BART_LOOPBACK; 2241 /* inb doesn't get bit! */ 2242 bart_config |= IEE16_BART_MCS16_TEST; 2243 outb(PORT + IEE16_CONFIG, bart_config); 2244 ee16_interrupt_enable(ie); 2245 ee16_chan_attn(unit); 2246 } 2247 ie->arpcom.ac_if.if_flags |= IFF_RUNNING; /* tell higher levels 2248 * we're here */ 2249 start_receiver(unit); 2250 2251 return; 2252} 2253 2254static void 2255ie_stop(int unit) 2256{ 2257 command_and_wait(unit, IE_RU_DISABLE, 0, 0); 2258} 2259 2260static int 2261ieioctl(struct ifnet *ifp, u_long command, caddr_t data) 2262{ 2263 struct ifaddr *ifa = (struct ifaddr *) data; 2264 struct ie_softc *ie = ifp->if_softc; 2265 struct ifreq *ifr = (struct ifreq *) data; 2266 int s, error = 0; 2267 2268 s = splimp(); 2269 2270 switch (command) { 2271 case SIOCSIFADDR: 2272 ifp->if_flags |= IFF_UP; 2273 2274 switch (ifa->ifa_addr->sa_family) { 2275#ifdef INET 2276 case AF_INET: 2277 ieinit(ifp->if_unit); 2278 arp_ifinit((struct arpcom *) ifp, ifa); 2279 break; 2280#endif /* INET */ 2281 2282#ifdef IPX 2283 /* 2284 * This magic copied from if_is.c; I don't use XNS, 2285 * so I have no way of telling if this actually 2286 * works or not. 2287 */ 2288 case AF_IPX: 2289 { 2290 struct ipx_addr *ina = 2291 &(IA_SIPX(ifa)->sipx_addr); 2292 2293 if (ipx_nullhost(*ina)) { 2294 ina->x_host = *(union ipx_host *) (ie->arpcom.ac_enaddr); 2295 } else { 2296 ifp->if_flags &= ~IFF_RUNNING; 2297 bcopy((caddr_t) ina->x_host.c_host, 2298 (caddr_t) ie->arpcom.ac_enaddr, 2299 sizeof ie->arpcom.ac_enaddr); 2300 } 2301 2302 ieinit(ifp->if_unit); 2303 } 2304 break; 2305#endif /* IPX */ 2306 2307#ifdef NS 2308 /* 2309 * This magic copied from if_is.c; I don't use XNS, 2310 * so I have no way of telling if this actually 2311 * works or not. 2312 */ 2313 case AF_NS: 2314 { 2315 struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); 2316 2317 if (ns_nullhost(*ina)) { 2318 ina->x_host = *(union ns_host *)(ie->arpcom.ac_enaddr); 2319 } else { 2320 ifp->if_flags &= ~IFF_RUNNING; 2321 bcopy((caddr_t) ina->x_host.c_host, 2322 (caddr_t) ie->arpcom.ac_enaddr, 2323 sizeof ie->arpcom.ac_enaddr); 2324 } 2325 2326 ieinit(ifp->if_unit); 2327 } 2328 break; 2329#endif /* NS */ 2330 2331 default: 2332 ieinit(ifp->if_unit); 2333 break; 2334 } 2335 break; 2336 2337 case SIOCSIFFLAGS: 2338 /* 2339 * Note that this device doesn't have an "all multicast" 2340 * mode, so we must turn on promiscuous mode and do the 2341 * filtering manually. 2342 */ 2343 if ((ifp->if_flags & IFF_UP) == 0 && 2344 (ifp->if_flags & IFF_RUNNING)) { 2345 ifp->if_flags &= ~IFF_RUNNING; 2346 ie_stop(ifp->if_unit); 2347 } else if ((ifp->if_flags & IFF_UP) && 2348 (ifp->if_flags & IFF_RUNNING) == 0) { 2349 ie_softc[ifp->if_unit].promisc = 2350 ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); 2351 ieinit(ifp->if_unit); 2352 } else if (ie_softc[ifp->if_unit].promisc ^ 2353 (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI))) { 2354 ie_softc[ifp->if_unit].promisc = 2355 ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); 2356 ieinit(ifp->if_unit); 2357 } 2358 break; 2359 2360 case SIOCADDMULTI: 2361 case SIOCDELMULTI: 2362 /* 2363 * Update multicast listeners 2364 */ 2365 /* reset multicast filtering */ 2366 ie_mc_reset(ifp->if_unit); 2367 error = 0; 2368 break; 2369 2370 case SIOCSIFMTU: 2371 /* 2372 * Set the interface MTU. 2373 */ 2374 if (ifr->ifr_mtu > ETHERMTU) { 2375 error = EINVAL; 2376 } else { 2377 ifp->if_mtu = ifr->ifr_mtu; 2378 } 2379 break; 2380 2381 default: 2382 error = EINVAL; 2383 } 2384 2385 splx(s); 2386 return (error); 2387} 2388 2389static void 2390ie_mc_reset(int unit) 2391{ 2392 struct ie_softc *ie = &ie_softc[unit]; 2393 struct ifmultiaddr *ifma; 2394 2395 /* 2396 * Step through the list of addresses. 2397 */ 2398 ie->mcast_count = 0; 2399 for (ifma = ie->arpcom.ac_if.if_multiaddrs.lh_first; ifma; 2400 ifma = ifma->ifma_link.le_next) { 2401 if (ifma->ifma_addr->sa_family != AF_LINK) 2402 continue; 2403 2404 /* XXX - this is broken... */ 2405 if (ie->mcast_count >= MAXMCAST) { 2406 ie->arpcom.ac_if.if_flags |= IFF_ALLMULTI; 2407 ieioctl(&ie->arpcom.ac_if, SIOCSIFFLAGS, (void *) 0); 2408 goto setflag; 2409 } 2410 bcopy(LLADDR((struct sockaddr_dl *) ifma->ifma_addr), 2411 &(ie->mcast_addrs[ie->mcast_count]), 6); 2412 ie->mcast_count++; 2413 } 2414 2415setflag: 2416 ie->want_mcsetup = 1; 2417} 2418 2419 2420#ifdef DEBUG 2421static void 2422print_rbd(volatile struct ie_recv_buf_desc * rbd) 2423{ 2424 printf("RBD at %p:\n" 2425 "actual %04x, next %04x, buffer %p\n" 2426 "length %04x, mbz %04x\n", 2427 (void *) rbd, 2428 rbd->ie_rbd_actual, rbd->ie_rbd_next, 2429 (void *) rbd->ie_rbd_buffer, 2430 rbd->ie_rbd_length, rbd->mbz); 2431} 2432 2433#endif /* DEBUG */ 2434#endif /* NIE > 0 */ 2435