1 /* $NetBSD: if_se.c,v 1.84 2012/02/03 23:39:59 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Ian W. Dall <ian.dall@dsto.defence.gov.au> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Ian W. Dall. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Driver for Cabletron EA41x scsi ethernet adaptor. 35 * 36 * Written by Ian Dall <ian.dall@dsto.defence.gov.au> Feb 3, 1997 37 * 38 * Acknowledgement: Thanks are due to Philip L. Budne <budd@cs.bu.edu> 39 * who reverse engineered the EA41x. In developing this code, 40 * Phil's userland daemon "etherd", was refered to extensively in lieu 41 * of accurate documentation for the device. 42 * 43 * This is a weird device! It doesn't conform to the scsi spec in much 44 * at all. About the only standard command supported is inquiry. Most 45 * commands are 6 bytes long, but the recv data is only 1 byte. Data 46 * must be received by periodically polling the device with the recv 47 * command. 48 * 49 * This driver is also a bit unusual. It must look like a network 50 * interface and it must also appear to be a scsi device to the scsi 51 * system. Hence there are cases where there are two entry points. eg 52 * sestart is to be called from the scsi subsytem and se_ifstart from 53 * the network interface subsystem. In addition, to facilitate scsi 54 * commands issued by userland programs, there are open, close and 55 * ioctl entry points. This allows a user program to, for example, 56 * display the ea41x stats and download new code into the adaptor --- 57 * functions which can't be performed through the ifconfig interface. 58 * Normal operation does not require any special userland program. 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: if_se.c,v 1.84 2012/02/03 23:39:59 christos Exp $"); 63 64 #include "opt_inet.h" 65 #include "opt_atalk.h" 66 67 #include <sys/param.h> 68 #include <sys/systm.h> 69 #include <sys/callout.h> 70 #include <sys/syslog.h> 71 #include <sys/kernel.h> 72 #include <sys/file.h> 73 #include <sys/stat.h> 74 #include <sys/ioctl.h> 75 #include <sys/buf.h> 76 #include <sys/uio.h> 77 #include <sys/malloc.h> 78 #include <sys/errno.h> 79 #include <sys/device.h> 80 #include <sys/disklabel.h> 81 #include <sys/disk.h> 82 #include <sys/proc.h> 83 #include <sys/conf.h> 84 85 #include <dev/scsipi/scsipi_all.h> 86 #include <dev/scsipi/scsi_ctron_ether.h> 87 #include <dev/scsipi/scsiconf.h> 88 89 #include <sys/mbuf.h> 90 91 #include <sys/socket.h> 92 #include <net/if.h> 93 #include <net/if_dl.h> 94 #include <net/if_ether.h> 95 #include <net/if_media.h> 96 97 #ifdef INET 98 #include <netinet/in.h> 99 #include <netinet/if_inarp.h> 100 #endif 101 102 103 #ifdef NETATALK 104 #include <netatalk/at.h> 105 #endif 106 107 108 #include <net/bpf.h> 109 #include <net/bpfdesc.h> 110 111 #define SETIMEOUT 1000 112 #define SEOUTSTANDING 4 113 #define SERETRIES 4 114 #define SE_PREFIX 4 115 #define ETHER_CRC 4 116 #define SEMINSIZE 60 117 118 /* Make this big enough for an ETHERMTU packet in promiscuous mode. */ 119 #define MAX_SNAP (ETHERMTU + sizeof(struct ether_header) + \ 120 SE_PREFIX + ETHER_CRC) 121 122 /* 10 full length packets appears to be the max ever returned. 16k is OK */ 123 #define RBUF_LEN (16 * 1024) 124 125 /* Tuning parameters: 126 * The EA41x only returns a maximum of 10 packets (regardless of size). 127 * We will attempt to adapt to polling fast enough to get RDATA_GOAL packets 128 * per read 129 */ 130 #define RDATA_MAX 10 131 #define RDATA_GOAL 8 132 133 /* se_poll and se_poll0 are the normal polling rate and the minimum 134 * polling rate respectively. se_poll0 should be chosen so that at 135 * maximum ethernet speed, we will read nearly RDATA_MAX packets. se_poll 136 * should be chosen for reasonable maximum latency. 137 * In practice, if we are being saturated with min length packets, we 138 * can't poll fast enough. Polling with zero delay actually 139 * worsens performance. se_poll0 is enforced to be always at least 1 140 */ 141 #define SE_POLL 40 /* default in milliseconds */ 142 #define SE_POLL0 10 /* default in milliseconds */ 143 int se_poll = 0; /* Delay in ticks set at attach time */ 144 int se_poll0 = 0; 145 int se_max_received = 0; /* Instrumentation */ 146 147 #define PROTOCMD(p, d) \ 148 ((d) = (p)) 149 150 #define PROTOCMD_DECL(name) \ 151 static const struct scsi_ctron_ether_generic name 152 153 #define PROTOCMD_DECL_SPECIAL(name) \ 154 static const struct __CONCAT(scsi_,name) name 155 156 /* Command initializers for commands using scsi_ctron_ether_generic */ 157 PROTOCMD_DECL(ctron_ether_send) = {CTRON_ETHER_SEND, 0, {0,0}, 0}; 158 PROTOCMD_DECL(ctron_ether_add_proto) = {CTRON_ETHER_ADD_PROTO, 0, {0,0}, 0}; 159 PROTOCMD_DECL(ctron_ether_get_addr) = {CTRON_ETHER_GET_ADDR, 0, {0,0}, 0}; 160 PROTOCMD_DECL(ctron_ether_set_media) = {CTRON_ETHER_SET_MEDIA, 0, {0,0}, 0}; 161 PROTOCMD_DECL(ctron_ether_set_addr) = {CTRON_ETHER_SET_ADDR, 0, {0,0}, 0}; 162 PROTOCMD_DECL(ctron_ether_set_multi) = {CTRON_ETHER_SET_MULTI, 0, {0,0}, 0}; 163 PROTOCMD_DECL(ctron_ether_remove_multi) = 164 {CTRON_ETHER_REMOVE_MULTI, 0, {0,0}, 0}; 165 166 /* Command initializers for commands using their own structures */ 167 PROTOCMD_DECL_SPECIAL(ctron_ether_recv) = {CTRON_ETHER_RECV}; 168 PROTOCMD_DECL_SPECIAL(ctron_ether_set_mode) = 169 {CTRON_ETHER_SET_MODE, 0, {0,0}, 0}; 170 171 struct se_softc { 172 struct device sc_dev; 173 struct ethercom sc_ethercom; /* Ethernet common part */ 174 struct scsipi_periph *sc_periph;/* contains our targ, lun, etc. */ 175 176 struct callout sc_ifstart_ch; 177 struct callout sc_recv_ch; 178 179 char *sc_tbuf; 180 char *sc_rbuf; 181 int protos; 182 #define PROTO_IP 0x01 183 #define PROTO_ARP 0x02 184 #define PROTO_REVARP 0x04 185 #define PROTO_AT 0x08 186 #define PROTO_AARP 0x10 187 int sc_debug; 188 int sc_flags; 189 #define SE_NEED_RECV 0x1 190 int sc_last_timeout; 191 int sc_enabled; 192 }; 193 194 static int sematch(device_t, cfdata_t, void *); 195 static void seattach(device_t, device_t, void *); 196 197 static void se_ifstart(struct ifnet *); 198 static void sestart(struct scsipi_periph *); 199 200 static void sedone(struct scsipi_xfer *, int); 201 static int se_ioctl(struct ifnet *, u_long, void *); 202 static void sewatchdog(struct ifnet *); 203 204 static inline u_int16_t ether_cmp(void *, void *); 205 static void se_recv(void *); 206 static struct mbuf *se_get(struct se_softc *, char *, int); 207 static int se_read(struct se_softc *, char *, int); 208 static int se_reset(struct se_softc *); 209 static int se_add_proto(struct se_softc *, int); 210 static int se_get_addr(struct se_softc *, u_int8_t *); 211 static int se_set_media(struct se_softc *, int); 212 static int se_init(struct se_softc *); 213 static int se_set_multi(struct se_softc *, u_int8_t *); 214 static int se_remove_multi(struct se_softc *, u_int8_t *); 215 #if 0 216 static int sc_set_all_multi(struct se_softc *, int); 217 #endif 218 static void se_stop(struct se_softc *); 219 static inline int se_scsipi_cmd(struct scsipi_periph *periph, 220 struct scsipi_generic *scsipi_cmd, 221 int cmdlen, u_char *data_addr, int datalen, 222 int retries, int timeout, struct buf *bp, 223 int flags); 224 static void se_delayed_ifstart(void *); 225 static int se_set_mode(struct se_softc *, int, int); 226 227 int se_enable(struct se_softc *); 228 void se_disable(struct se_softc *); 229 230 CFATTACH_DECL(se, sizeof(struct se_softc), 231 sematch, seattach, NULL, NULL); 232 233 extern struct cfdriver se_cd; 234 235 dev_type_open(seopen); 236 dev_type_close(seclose); 237 dev_type_ioctl(seioctl); 238 239 const struct cdevsw se_cdevsw = { 240 seopen, seclose, noread, nowrite, seioctl, 241 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER 242 }; 243 244 const struct scsipi_periphsw se_switch = { 245 NULL, /* Use default error handler */ 246 sestart, /* have a queue, served by this */ 247 NULL, /* have no async handler */ 248 sedone, /* deal with stats at interrupt time */ 249 }; 250 251 const struct scsipi_inquiry_pattern se_patterns[] = { 252 {T_PROCESSOR, T_FIXED, 253 "CABLETRN", "EA412", ""}, 254 {T_PROCESSOR, T_FIXED, 255 "Cabletrn", "EA412", ""}, 256 }; 257 258 /* 259 * Compare two Ether/802 addresses for equality, inlined and 260 * unrolled for speed. 261 * Note: use this like memcmp() 262 */ 263 static inline u_int16_t 264 ether_cmp(void *one, void *two) 265 { 266 u_int16_t *a = (u_int16_t *) one; 267 u_int16_t *b = (u_int16_t *) two; 268 u_int16_t diff; 269 270 diff = (a[0] - b[0]) | (a[1] - b[1]) | (a[2] - b[2]); 271 272 return (diff); 273 } 274 275 #define ETHER_CMP ether_cmp 276 277 static int 278 sematch(device_t parent, cfdata_t match, void *aux) 279 { 280 struct scsipibus_attach_args *sa = aux; 281 int priority; 282 283 (void)scsipi_inqmatch(&sa->sa_inqbuf, 284 se_patterns, sizeof(se_patterns) / sizeof(se_patterns[0]), 285 sizeof(se_patterns[0]), &priority); 286 return (priority); 287 } 288 289 /* 290 * The routine called by the low level scsi routine when it discovers 291 * a device suitable for this driver. 292 */ 293 static void 294 seattach(device_t parent, device_t self, void *aux) 295 { 296 struct se_softc *sc = device_private(self); 297 struct scsipibus_attach_args *sa = aux; 298 struct scsipi_periph *periph = sa->sa_periph; 299 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 300 u_int8_t myaddr[ETHER_ADDR_LEN]; 301 302 printf("\n"); 303 SC_DEBUG(periph, SCSIPI_DB2, ("seattach: ")); 304 305 callout_init(&sc->sc_ifstart_ch, 0); 306 callout_init(&sc->sc_recv_ch, 0); 307 308 309 /* 310 * Store information needed to contact our base driver 311 */ 312 sc->sc_periph = periph; 313 periph->periph_dev = &sc->sc_dev; 314 periph->periph_switch = &se_switch; 315 316 /* XXX increase openings? */ 317 318 se_poll = (SE_POLL * hz) / 1000; 319 se_poll = se_poll? se_poll: 1; 320 se_poll0 = (SE_POLL0 * hz) / 1000; 321 se_poll0 = se_poll0? se_poll0: 1; 322 323 /* 324 * Initialize and attach a buffer 325 */ 326 sc->sc_tbuf = malloc(ETHERMTU + sizeof(struct ether_header), 327 M_DEVBUF, M_NOWAIT); 328 if (sc->sc_tbuf == 0) 329 panic("seattach: can't allocate transmit buffer"); 330 331 sc->sc_rbuf = malloc(RBUF_LEN, M_DEVBUF, M_NOWAIT);/* A Guess */ 332 if (sc->sc_rbuf == 0) 333 panic("seattach: can't allocate receive buffer"); 334 335 se_get_addr(sc, myaddr); 336 337 /* Initialize ifnet structure. */ 338 strlcpy(ifp->if_xname, device_xname(&sc->sc_dev), sizeof(ifp->if_xname)); 339 ifp->if_softc = sc; 340 ifp->if_start = se_ifstart; 341 ifp->if_ioctl = se_ioctl; 342 ifp->if_watchdog = sewatchdog; 343 ifp->if_flags = 344 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 345 IFQ_SET_READY(&ifp->if_snd); 346 347 /* Attach the interface. */ 348 if_attach(ifp); 349 ether_ifattach(ifp, myaddr); 350 } 351 352 353 static inline int 354 se_scsipi_cmd(struct scsipi_periph *periph, struct scsipi_generic *cmd, 355 int cmdlen, u_char *data_addr, int datalen, int retries, int timeout, 356 struct buf *bp, int flags) 357 { 358 int error; 359 int s = splbio(); 360 361 error = scsipi_command(periph, cmd, cmdlen, data_addr, 362 datalen, retries, timeout, bp, flags); 363 splx(s); 364 return (error); 365 } 366 367 /* Start routine for calling from scsi sub system */ 368 static void 369 sestart(struct scsipi_periph *periph) 370 { 371 struct se_softc *sc = (void *)periph->periph_dev; 372 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 373 int s = splnet(); 374 375 se_ifstart(ifp); 376 (void) splx(s); 377 } 378 379 static void 380 se_delayed_ifstart(void *v) 381 { 382 struct ifnet *ifp = v; 383 struct se_softc *sc = ifp->if_softc; 384 int s; 385 386 s = splnet(); 387 if (sc->sc_enabled) { 388 ifp->if_flags &= ~IFF_OACTIVE; 389 se_ifstart(ifp); 390 } 391 splx(s); 392 } 393 394 /* 395 * Start transmission on the interface. 396 * Always called at splnet(). 397 */ 398 static void 399 se_ifstart(struct ifnet *ifp) 400 { 401 struct se_softc *sc = ifp->if_softc; 402 struct scsi_ctron_ether_generic send_cmd; 403 struct mbuf *m, *m0; 404 int len, error; 405 u_char *cp; 406 407 /* Don't transmit if interface is busy or not running */ 408 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 409 return; 410 411 IFQ_DEQUEUE(&ifp->if_snd, m0); 412 if (m0 == 0) 413 return; 414 /* If BPF is listening on this interface, let it see the 415 * packet before we commit it to the wire. 416 */ 417 bpf_mtap(ifp, m0); 418 419 /* We need to use m->m_pkthdr.len, so require the header */ 420 if ((m0->m_flags & M_PKTHDR) == 0) 421 panic("ctscstart: no header mbuf"); 422 len = m0->m_pkthdr.len; 423 424 /* Mark the interface busy. */ 425 ifp->if_flags |= IFF_OACTIVE; 426 427 /* Chain; copy into linear buffer we allocated at attach time. */ 428 cp = sc->sc_tbuf; 429 for (m = m0; m != NULL; ) { 430 memcpy(cp, mtod(m, u_char *), m->m_len); 431 cp += m->m_len; 432 MFREE(m, m0); 433 m = m0; 434 } 435 if (len < SEMINSIZE) { 436 #ifdef SEDEBUG 437 if (sc->sc_debug) 438 printf("se: packet size %d (%zu) < %d\n", len, 439 cp - (u_char *)sc->sc_tbuf, SEMINSIZE); 440 #endif 441 memset(cp, 0, SEMINSIZE - len); 442 len = SEMINSIZE; 443 } 444 445 /* Fill out SCSI command. */ 446 PROTOCMD(ctron_ether_send, send_cmd); 447 _lto2b(len, send_cmd.length); 448 449 /* Send command to device. */ 450 error = se_scsipi_cmd(sc->sc_periph, 451 (void *)&send_cmd, sizeof(send_cmd), 452 sc->sc_tbuf, len, SERETRIES, 453 SETIMEOUT, NULL, XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_DATA_OUT); 454 if (error) { 455 aprint_error_dev(&sc->sc_dev, "not queued, error %d\n", error); 456 ifp->if_oerrors++; 457 ifp->if_flags &= ~IFF_OACTIVE; 458 } else 459 ifp->if_opackets++; 460 if (sc->sc_flags & SE_NEED_RECV) { 461 sc->sc_flags &= ~SE_NEED_RECV; 462 se_recv((void *) sc); 463 } 464 } 465 466 467 /* 468 * Called from the scsibus layer via our scsi device switch. 469 */ 470 static void 471 sedone(struct scsipi_xfer *xs, int error) 472 { 473 struct se_softc *sc = (void *)xs->xs_periph->periph_dev; 474 struct scsipi_generic *cmd = xs->cmd; 475 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 476 int s; 477 478 s = splnet(); 479 if(IS_SEND(cmd)) { 480 if (xs->error == XS_BUSY) { 481 printf("se: busy, retry txmit\n"); 482 callout_reset(&sc->sc_ifstart_ch, hz, 483 se_delayed_ifstart, ifp); 484 } else { 485 ifp->if_flags &= ~IFF_OACTIVE; 486 /* the generic scsipi_done will call 487 * sestart (through scsipi_free_xs). 488 */ 489 } 490 } else if(IS_RECV(cmd)) { 491 /* RECV complete */ 492 /* pass data up. reschedule a recv */ 493 /* scsipi_free_xs will call start. Harmless. */ 494 if (error) { 495 /* Reschedule after a delay */ 496 callout_reset(&sc->sc_recv_ch, se_poll, 497 se_recv, (void *)sc); 498 } else { 499 int n, ntimeo; 500 n = se_read(sc, xs->data, xs->datalen - xs->resid); 501 if (n > se_max_received) 502 se_max_received = n; 503 if (n == 0) 504 ntimeo = se_poll; 505 else if (n >= RDATA_MAX) 506 ntimeo = se_poll0; 507 else { 508 ntimeo = sc->sc_last_timeout; 509 ntimeo = (ntimeo * RDATA_GOAL)/n; 510 ntimeo = (ntimeo < se_poll0? 511 se_poll0: ntimeo); 512 ntimeo = (ntimeo > se_poll? 513 se_poll: ntimeo); 514 } 515 sc->sc_last_timeout = ntimeo; 516 if (ntimeo == se_poll0 && 517 IFQ_IS_EMPTY(&ifp->if_snd) == 0) 518 /* Output is pending. Do next recv 519 * after the next send. */ 520 sc->sc_flags |= SE_NEED_RECV; 521 else { 522 callout_reset(&sc->sc_recv_ch, ntimeo, 523 se_recv, (void *)sc); 524 } 525 } 526 } 527 splx(s); 528 } 529 530 static void 531 se_recv(void *v) 532 { 533 /* do a recv command */ 534 struct se_softc *sc = (struct se_softc *) v; 535 struct scsi_ctron_ether_recv recv_cmd; 536 int error; 537 538 if (sc->sc_enabled == 0) 539 return; 540 541 PROTOCMD(ctron_ether_recv, recv_cmd); 542 543 error = se_scsipi_cmd(sc->sc_periph, 544 (void *)&recv_cmd, sizeof(recv_cmd), 545 sc->sc_rbuf, RBUF_LEN, SERETRIES, SETIMEOUT, NULL, 546 XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_DATA_IN); 547 if (error) 548 callout_reset(&sc->sc_recv_ch, se_poll, se_recv, (void *)sc); 549 } 550 551 /* 552 * We copy the data into mbufs. When full cluster sized units are present 553 * we copy into clusters. 554 */ 555 static struct mbuf * 556 se_get(struct se_softc *sc, char *data, int totlen) 557 { 558 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 559 struct mbuf *m, *m0, *newm; 560 int len; 561 562 MGETHDR(m0, M_DONTWAIT, MT_DATA); 563 if (m0 == 0) 564 return (0); 565 m0->m_pkthdr.rcvif = ifp; 566 m0->m_pkthdr.len = totlen; 567 len = MHLEN; 568 m = m0; 569 570 while (totlen > 0) { 571 if (totlen >= MINCLSIZE) { 572 MCLGET(m, M_DONTWAIT); 573 if ((m->m_flags & M_EXT) == 0) 574 goto bad; 575 len = MCLBYTES; 576 } 577 578 if (m == m0) { 579 char *newdata = (char *) 580 ALIGN(m->m_data + sizeof(struct ether_header)) - 581 sizeof(struct ether_header); 582 len -= newdata - m->m_data; 583 m->m_data = newdata; 584 } 585 586 m->m_len = len = min(totlen, len); 587 memcpy(mtod(m, void *), data, len); 588 data += len; 589 590 totlen -= len; 591 if (totlen > 0) { 592 MGET(newm, M_DONTWAIT, MT_DATA); 593 if (newm == 0) 594 goto bad; 595 len = MLEN; 596 m = m->m_next = newm; 597 } 598 } 599 600 return (m0); 601 602 bad: 603 m_freem(m0); 604 return (0); 605 } 606 607 /* 608 * Pass packets to higher levels. 609 */ 610 static int 611 se_read(struct se_softc *sc, char *data, int datalen) 612 { 613 struct mbuf *m; 614 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 615 int n; 616 617 n = 0; 618 while (datalen >= 2) { 619 int len = _2btol(data); 620 data += 2; 621 datalen -= 2; 622 623 if (len == 0) 624 break; 625 #ifdef SEDEBUG 626 if (sc->sc_debug) { 627 printf("se_read: datalen = %d, packetlen = %d, proto = 0x%04x\n", datalen, len, 628 ntohs(((struct ether_header *)data)->ether_type)); 629 } 630 #endif 631 if (len <= sizeof(struct ether_header) || 632 len > MAX_SNAP) { 633 #ifdef SEDEBUG 634 printf("%s: invalid packet size %d; dropping\n", 635 device_xname(&sc->sc_dev), len); 636 #endif 637 ifp->if_ierrors++; 638 goto next_packet; 639 } 640 641 /* Don't need crc. Must keep ether header for BPF */ 642 m = se_get(sc, data, len - ETHER_CRC); 643 if (m == 0) { 644 #ifdef SEDEBUG 645 if (sc->sc_debug) 646 printf("se_read: se_get returned null\n"); 647 #endif 648 ifp->if_ierrors++; 649 goto next_packet; 650 } 651 if ((ifp->if_flags & IFF_PROMISC) != 0) { 652 m_adj(m, SE_PREFIX); 653 } 654 ifp->if_ipackets++; 655 656 /* 657 * Check if there's a BPF listener on this interface. 658 * If so, hand off the raw packet to BPF. 659 */ 660 bpf_mtap(ifp, m); 661 662 /* Pass the packet up. */ 663 (*ifp->if_input)(ifp, m); 664 665 next_packet: 666 data += len; 667 datalen -= len; 668 n++; 669 } 670 return (n); 671 } 672 673 674 static void 675 sewatchdog(struct ifnet *ifp) 676 { 677 struct se_softc *sc = ifp->if_softc; 678 679 log(LOG_ERR, "%s: device timeout\n", device_xname(&sc->sc_dev)); 680 ++ifp->if_oerrors; 681 682 se_reset(sc); 683 } 684 685 static int 686 se_reset(struct se_softc *sc) 687 { 688 int error; 689 int s = splnet(); 690 #if 0 691 /* Maybe we don't *really* want to reset the entire bus 692 * because the ctron isn't working. We would like to send a 693 * "BUS DEVICE RESET" message, but don't think the ctron 694 * understands it. 695 */ 696 error = se_scsipi_cmd(sc->sc_periph, 0, 0, 0, 0, SERETRIES, 2000, NULL, 697 XS_CTL_RESET); 698 #endif 699 error = se_init(sc); 700 splx(s); 701 return (error); 702 } 703 704 static int 705 se_add_proto(struct se_softc *sc, int proto) 706 { 707 int error; 708 struct scsi_ctron_ether_generic add_proto_cmd; 709 u_int8_t data[2]; 710 _lto2b(proto, data); 711 #ifdef SEDEBUG 712 if (sc->sc_debug) 713 printf("se: adding proto 0x%02x%02x\n", data[0], data[1]); 714 #endif 715 716 PROTOCMD(ctron_ether_add_proto, add_proto_cmd); 717 _lto2b(sizeof(data), add_proto_cmd.length); 718 error = se_scsipi_cmd(sc->sc_periph, 719 (void *)&add_proto_cmd, sizeof(add_proto_cmd), 720 data, sizeof(data), SERETRIES, SETIMEOUT, NULL, 721 XS_CTL_DATA_OUT); 722 return (error); 723 } 724 725 static int 726 se_get_addr(struct se_softc *sc, u_int8_t *myaddr) 727 { 728 int error; 729 struct scsi_ctron_ether_generic get_addr_cmd; 730 731 PROTOCMD(ctron_ether_get_addr, get_addr_cmd); 732 _lto2b(ETHER_ADDR_LEN, get_addr_cmd.length); 733 error = se_scsipi_cmd(sc->sc_periph, 734 (void *)&get_addr_cmd, sizeof(get_addr_cmd), 735 myaddr, ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, 736 XS_CTL_DATA_IN); 737 printf("%s: ethernet address %s\n", device_xname(&sc->sc_dev), 738 ether_sprintf(myaddr)); 739 return (error); 740 } 741 742 743 static int 744 se_set_media(struct se_softc *sc, int type) 745 { 746 int error; 747 struct scsi_ctron_ether_generic set_media_cmd; 748 749 PROTOCMD(ctron_ether_set_media, set_media_cmd); 750 set_media_cmd.byte3 = type; 751 error = se_scsipi_cmd(sc->sc_periph, 752 (void *)&set_media_cmd, sizeof(set_media_cmd), 753 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 754 return (error); 755 } 756 757 static int 758 se_set_mode(struct se_softc *sc, int len, int mode) 759 { 760 int error; 761 struct scsi_ctron_ether_set_mode set_mode_cmd; 762 763 PROTOCMD(ctron_ether_set_mode, set_mode_cmd); 764 set_mode_cmd.mode = mode; 765 _lto2b(len, set_mode_cmd.length); 766 error = se_scsipi_cmd(sc->sc_periph, 767 (void *)&set_mode_cmd, sizeof(set_mode_cmd), 768 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 769 return (error); 770 } 771 772 773 static int 774 se_init(struct se_softc *sc) 775 { 776 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 777 struct scsi_ctron_ether_generic set_addr_cmd; 778 uint8_t enaddr[ETHER_ADDR_LEN]; 779 int error; 780 781 if (ifp->if_flags & IFF_PROMISC) { 782 error = se_set_mode(sc, MAX_SNAP, 1); 783 } 784 else 785 error = se_set_mode(sc, ETHERMTU + sizeof(struct ether_header), 786 0); 787 if (error != 0) 788 return (error); 789 790 PROTOCMD(ctron_ether_set_addr, set_addr_cmd); 791 _lto2b(ETHER_ADDR_LEN, set_addr_cmd.length); 792 memcpy(enaddr, CLLADDR(ifp->if_sadl), sizeof(enaddr)); 793 error = se_scsipi_cmd(sc->sc_periph, 794 (void *)&set_addr_cmd, sizeof(set_addr_cmd), 795 enaddr, ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, 796 XS_CTL_DATA_OUT); 797 if (error != 0) 798 return (error); 799 800 if ((sc->protos & PROTO_IP) && 801 (error = se_add_proto(sc, ETHERTYPE_IP)) != 0) 802 return (error); 803 if ((sc->protos & PROTO_ARP) && 804 (error = se_add_proto(sc, ETHERTYPE_ARP)) != 0) 805 return (error); 806 if ((sc->protos & PROTO_REVARP) && 807 (error = se_add_proto(sc, ETHERTYPE_REVARP)) != 0) 808 return (error); 809 #ifdef NETATALK 810 if ((sc->protos & PROTO_AT) && 811 (error = se_add_proto(sc, ETHERTYPE_ATALK)) != 0) 812 return (error); 813 if ((sc->protos & PROTO_AARP) && 814 (error = se_add_proto(sc, ETHERTYPE_AARP)) != 0) 815 return (error); 816 #endif 817 818 if ((ifp->if_flags & (IFF_RUNNING|IFF_UP)) == IFF_UP) { 819 ifp->if_flags |= IFF_RUNNING; 820 se_recv(sc); 821 ifp->if_flags &= ~IFF_OACTIVE; 822 se_ifstart(ifp); 823 } 824 return (error); 825 } 826 827 static int 828 se_set_multi(struct se_softc *sc, u_int8_t *addr) 829 { 830 struct scsi_ctron_ether_generic set_multi_cmd; 831 int error; 832 833 if (sc->sc_debug) 834 printf("%s: set_set_multi: %s\n", device_xname(&sc->sc_dev), 835 ether_sprintf(addr)); 836 837 PROTOCMD(ctron_ether_set_multi, set_multi_cmd); 838 _lto2b(sizeof(addr), set_multi_cmd.length); 839 /* XXX sizeof(addr) is the size of the pointer. Surely it 840 * is too small? --dyoung 841 */ 842 error = se_scsipi_cmd(sc->sc_periph, 843 (void *)&set_multi_cmd, sizeof(set_multi_cmd), 844 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, XS_CTL_DATA_OUT); 845 return (error); 846 } 847 848 static int 849 se_remove_multi(struct se_softc *sc, u_int8_t *addr) 850 { 851 struct scsi_ctron_ether_generic remove_multi_cmd; 852 int error; 853 854 if (sc->sc_debug) 855 printf("%s: se_remove_multi: %s\n", device_xname(&sc->sc_dev), 856 ether_sprintf(addr)); 857 858 PROTOCMD(ctron_ether_remove_multi, remove_multi_cmd); 859 _lto2b(sizeof(addr), remove_multi_cmd.length); 860 /* XXX sizeof(addr) is the size of the pointer. Surely it 861 * is too small? --dyoung 862 */ 863 error = se_scsipi_cmd(sc->sc_periph, 864 (void *)&remove_multi_cmd, sizeof(remove_multi_cmd), 865 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, XS_CTL_DATA_OUT); 866 return (error); 867 } 868 869 #if 0 /* not used --thorpej */ 870 static int 871 sc_set_all_multi(struct se_softc *sc, int set) 872 { 873 int error = 0; 874 u_int8_t *addr; 875 struct ethercom *ac = &sc->sc_ethercom; 876 struct ether_multi *enm; 877 struct ether_multistep step; 878 879 ETHER_FIRST_MULTI(step, ac, enm); 880 while (enm != NULL) { 881 if (ETHER_CMP(enm->enm_addrlo, enm->enm_addrhi)) { 882 /* 883 * We must listen to a range of multicast addresses. 884 * For now, just accept all multicasts, rather than 885 * trying to set only those filter bits needed to match 886 * the range. (At this time, the only use of address 887 * ranges is for IP multicast routing, for which the 888 * range is big enough to require all bits set.) 889 */ 890 /* We have no way of adding a range to this device. 891 * stepping through all addresses in the range is 892 * typically not possible. The only real alternative 893 * is to go into promicuous mode and filter by hand. 894 */ 895 return (ENODEV); 896 897 } 898 899 addr = enm->enm_addrlo; 900 if ((error = set ? se_set_multi(sc, addr) : 901 se_remove_multi(sc, addr)) != 0) 902 return (error); 903 ETHER_NEXT_MULTI(step, enm); 904 } 905 return (error); 906 } 907 #endif /* not used */ 908 909 static void 910 se_stop(struct se_softc *sc) 911 { 912 913 /* Don't schedule any reads */ 914 callout_stop(&sc->sc_recv_ch); 915 916 /* How can we abort any scsi cmds in progress? */ 917 } 918 919 920 /* 921 * Process an ioctl request. 922 */ 923 static int 924 se_ioctl(struct ifnet *ifp, u_long cmd, void *data) 925 { 926 struct se_softc *sc = ifp->if_softc; 927 struct ifaddr *ifa = (struct ifaddr *)data; 928 struct ifreq *ifr = (struct ifreq *)data; 929 struct sockaddr *sa; 930 int s, error = 0; 931 932 s = splnet(); 933 934 switch (cmd) { 935 936 case SIOCINITIFADDR: 937 if ((error = se_enable(sc)) != 0) 938 break; 939 ifp->if_flags |= IFF_UP; 940 941 if ((error = se_set_media(sc, CMEDIA_AUTOSENSE)) != 0) 942 break; 943 944 switch (ifa->ifa_addr->sa_family) { 945 #ifdef INET 946 case AF_INET: 947 sc->protos |= (PROTO_IP | PROTO_ARP | PROTO_REVARP); 948 if ((error = se_init(sc)) != 0) 949 break; 950 arp_ifinit(ifp, ifa); 951 break; 952 #endif 953 #ifdef NETATALK 954 case AF_APPLETALK: 955 sc->protos |= (PROTO_AT | PROTO_AARP); 956 if ((error = se_init(sc)) != 0) 957 break; 958 break; 959 #endif 960 default: 961 error = se_init(sc); 962 break; 963 } 964 break; 965 966 967 case SIOCSIFFLAGS: 968 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 969 break; 970 /* XXX re-use ether_ioctl() */ 971 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 972 case IFF_RUNNING: 973 /* 974 * If interface is marked down and it is running, then 975 * stop it. 976 */ 977 se_stop(sc); 978 ifp->if_flags &= ~IFF_RUNNING; 979 se_disable(sc); 980 break; 981 case IFF_UP: 982 /* 983 * If interface is marked up and it is stopped, then 984 * start it. 985 */ 986 if ((error = se_enable(sc)) != 0) 987 break; 988 error = se_init(sc); 989 break; 990 default: 991 /* 992 * Reset the interface to pick up changes in any other 993 * flags that affect hardware registers. 994 */ 995 if (sc->sc_enabled) 996 error = se_init(sc); 997 break; 998 } 999 #ifdef SEDEBUG 1000 if (ifp->if_flags & IFF_DEBUG) 1001 sc->sc_debug = 1; 1002 else 1003 sc->sc_debug = 0; 1004 #endif 1005 break; 1006 1007 case SIOCADDMULTI: 1008 case SIOCDELMULTI: 1009 sa = sockaddr_dup(ifreq_getaddr(cmd, ifr), M_NOWAIT); 1010 if (sa == NULL) { 1011 error = ENOBUFS; 1012 break; 1013 } 1014 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1015 if (ifp->if_flags & IFF_RUNNING) { 1016 error = (cmd == SIOCADDMULTI) ? 1017 se_set_multi(sc, sa->sa_data) : 1018 se_remove_multi(sc, sa->sa_data); 1019 } else 1020 error = 0; 1021 } 1022 sockaddr_free(sa); 1023 break; 1024 1025 default: 1026 1027 error = ether_ioctl(ifp, cmd, data); 1028 break; 1029 } 1030 1031 splx(s); 1032 return (error); 1033 } 1034 1035 /* 1036 * Enable the network interface. 1037 */ 1038 int 1039 se_enable(struct se_softc *sc) 1040 { 1041 struct scsipi_periph *periph = sc->sc_periph; 1042 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1043 int error = 0; 1044 1045 if (sc->sc_enabled == 0 && 1046 (error = scsipi_adapter_addref(adapt)) == 0) 1047 sc->sc_enabled = 1; 1048 else 1049 aprint_error_dev(&sc->sc_dev, "device enable failed\n"); 1050 1051 return (error); 1052 } 1053 1054 /* 1055 * Disable the network interface. 1056 */ 1057 void 1058 se_disable(struct se_softc *sc) 1059 { 1060 struct scsipi_periph *periph = sc->sc_periph; 1061 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1062 1063 if (sc->sc_enabled != 0) { 1064 scsipi_adapter_delref(adapt); 1065 sc->sc_enabled = 0; 1066 } 1067 } 1068 1069 #define SEUNIT(z) (minor(z)) 1070 /* 1071 * open the device. 1072 */ 1073 int 1074 seopen(dev_t dev, int flag, int fmt, struct lwp *l) 1075 { 1076 int unit, error; 1077 struct se_softc *sc; 1078 struct scsipi_periph *periph; 1079 struct scsipi_adapter *adapt; 1080 1081 unit = SEUNIT(dev); 1082 sc = device_lookup_private(&se_cd, unit); 1083 if (sc == NULL) 1084 return (ENXIO); 1085 1086 periph = sc->sc_periph; 1087 adapt = periph->periph_channel->chan_adapter; 1088 1089 if ((error = scsipi_adapter_addref(adapt)) != 0) 1090 return (error); 1091 1092 SC_DEBUG(periph, SCSIPI_DB1, 1093 ("scopen: dev=0x%"PRIx64" (unit %d (of %d))\n", dev, unit, 1094 se_cd.cd_ndevs)); 1095 1096 periph->periph_flags |= PERIPH_OPEN; 1097 1098 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 1099 return (0); 1100 } 1101 1102 /* 1103 * close the device.. only called if we are the LAST 1104 * occurence of an open device 1105 */ 1106 int 1107 seclose(dev_t dev, int flag, int fmt, struct lwp *l) 1108 { 1109 struct se_softc *sc = device_lookup_private(&se_cd, SEUNIT(dev)); 1110 struct scsipi_periph *periph = sc->sc_periph; 1111 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1112 1113 SC_DEBUG(sc->sc_periph, SCSIPI_DB1, ("closing\n")); 1114 1115 scsipi_wait_drain(periph); 1116 1117 scsipi_adapter_delref(adapt); 1118 periph->periph_flags &= ~PERIPH_OPEN; 1119 1120 return (0); 1121 } 1122 1123 /* 1124 * Perform special action on behalf of the user 1125 * Only does generic scsi ioctls. 1126 */ 1127 int 1128 seioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1129 { 1130 struct se_softc *sc = device_lookup_private(&se_cd, SEUNIT(dev)); 1131 1132 return (scsipi_do_ioctl(sc->sc_periph, dev, cmd, addr, flag, l)); 1133 } 1134