1 /* $NetBSD: if_qt.c,v 1.16 2009/01/11 07:40:02 matt Exp $ */ 2 /* 3 * Copyright (c) 1992 Steven M. Schultz 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * @(#)if_qt.c 1.2 (2.11BSD) 2/20/93 29 */ 30 /* 31 * 32 * Modification History 33 * 23-Feb-92 -- sms 34 * Rewrite the buffer handling so that fewer than the maximum number of 35 * buffers may be used (32 receive and 12 transmit buffers consume 66+kb 36 * of main system memory in addition to the internal structures in the 37 * networking code). A freelist of available buffers is maintained now. 38 * When I/O operations complete the associated buffer is placed on the 39 * freelist (a single linked list for simplicity) and when an I/O is 40 * started a buffer is pulled off the list. 41 * 42 * 20-Feb-92 -- sms 43 * It works! Darned board couldn't handle "short" rings - those rings 44 * where only half the entries were made available to the board (the 45 * ring descriptors were the full size, merely half the entries were 46 * flagged as belonging always to the driver). Grrrr. Would have thought 47 * the board could skip over those entries reserved by the driver. 48 * Now to find a way not to have to allocated 32+12 times 1.5kb worth of 49 * buffers... 50 * 51 * 03-Feb-92 -- sms 52 * Released but still not working. The driver now responds to arp and 53 * ping requests. The board is apparently not returning ring descriptors 54 * to the driver so eventually we run out of buffers. Back to the 55 * drawing board. 56 * 57 * 28-Dec-92 -- sms 58 * Still not released. Hiatus in finding free time and thin-netting 59 * the systems (many thanks Terry!). 60 * Added logic to dynamically allocate a vector and initialize it. 61 * 62 * 23-Oct-92 -- sms 63 * The INIT block must (apparently) be quadword aligned [no thanks to 64 * the manual for not mentioning that fact]. The necessary alignment 65 * is achieved by allocating the INIT block from main memory ('malloc' 66 * guarantees click alignment) and mapping it as needed (which is _very_ 67 * infrequently). A check for quadword alignment of the ring descriptors 68 * was added - at present the descriptors are properly aligned, if this 69 * should change then something will have to be done (like do it "right"). 70 * Darned alignment restrictions! 71 * 72 * A couple of typos were corrected (missing parentheses, reversed 73 * arguments to printf calls, etc). 74 * 75 * 13-Oct-92 -- sms@wlv.iipo.gtegsc.com 76 * Created based on the DELQA-PLUS addendum to DELQA User's Guide. 77 * This driver ('qt') is selected at system configuration time. If the 78 * board * is not a DELQA-YM an error message will be printed and the 79 * interface will not be attached. 80 */ 81 82 #include <sys/cdefs.h> 83 __KERNEL_RCSID(0, "$NetBSD: if_qt.c,v 1.16 2009/01/11 07:40:02 matt Exp $"); 84 85 #include "opt_inet.h" 86 #include "bpfilter.h" 87 88 #include <sys/param.h> 89 #include <sys/systm.h> 90 #include <sys/mbuf.h> 91 #include <sys/protosw.h> 92 #include <sys/socket.h> 93 #include <sys/ioctl.h> 94 #include <sys/device.h> 95 #include <sys/errno.h> 96 #include <sys/syslog.h> 97 #include <sys/time.h> 98 #include <sys/kernel.h> 99 100 #include <net/if.h> 101 #include <net/if_ether.h> 102 #include <net/netisr.h> 103 #include <net/route.h> 104 105 #ifdef INET 106 #include <sys/domain.h> 107 #include <netinet/in.h> 108 #include <netinet/in_systm.h> 109 #include <netinet/in_var.h> 110 #include <netinet/ip.h> 111 #endif 112 113 #if NBPFILTER > 0 114 #include <net/bpf.h> 115 #include <net/bpfdesc.h> 116 #endif 117 118 119 #include <sys/bus.h> 120 121 #include <dev/qbus/ubavar.h> 122 #include <dev/qbus/if_uba.h> 123 #include <dev/qbus/if_qtreg.h> 124 125 #define NRCV QT_MAX_RCV /* Receive descriptors (must be == 32) */ 126 #define NXMT QT_MAX_XMT /* Transmit descriptors (must be == 12) */ 127 #if NRCV != 32 || NXMT != 12 128 hardware requires these sizes. 129 #endif 130 131 /* 132 * Control data structures, must be in DMA-friendly memory. 133 */ 134 struct qt_cdata { 135 struct qt_init qc_init; /* Init block */ 136 struct qt_rring qc_r[NRCV]; /* Receive descriptor ring */ 137 struct qt_tring qc_t[NXMT]; /* Transmit descriptor ring */ 138 }; 139 140 struct qt_softc { 141 device_t sc_dev; /* Configuration common part */ 142 struct ethercom is_ec; /* common part - must be first */ 143 struct uba_softc *sc_uh; 144 struct evcnt sc_intrcnt; /* Interrupt counting */ 145 #define is_if is_ec.ec_if /* network-visible interface */ 146 u_int8_t is_addr[ETHER_ADDR_LEN]; /* hardware Ethernet address */ 147 bus_space_tag_t sc_iot; 148 bus_addr_t sc_ioh; 149 150 struct ubinfo sc_ui; /* control block address desc */ 151 struct qt_cdata *sc_ib; /* virt address of ctrl block */ 152 struct qt_cdata *sc_pib; /* phys address of ctrl block */ 153 154 struct ifubinfo sc_ifuba; /* UNIBUS resources */ 155 struct ifrw sc_ifr[NRCV]; /* UNIBUS receive buffer maps */ 156 struct ifxmt sc_ifw[NXMT]; /* UNIBUS receive buffer maps */ 157 158 int rindex; /* Receive Completed Index */ 159 int nxtrcv; /* Next Receive Index */ 160 int nrcv; /* Number of Receives active */ 161 162 int xnext; /* Next descriptor to transmit */ 163 int xlast; /* Last descriptor transmitted */ 164 int nxmit; /* # packets in send queue */ 165 166 short vector; /* Interrupt vector assigned */ 167 }; 168 169 static int qtmatch(device_t, cfdata_t, void *); 170 static void qtattach(device_t, device_t, void *); 171 static void qtintr(void *); 172 static int qtinit(struct ifnet *); 173 static int qtioctl(struct ifnet *, u_long, void *); 174 static int qtturbo(struct qt_softc *); 175 static void qtstart(struct ifnet *ifp); 176 static void qtstop(struct ifnet *ifp, int disable); 177 static void qtsrr(struct qt_softc *, int); 178 static void qtrint(struct qt_softc *sc); 179 static void qttint(struct qt_softc *sc); 180 181 /* static void qtrestart(struct qt_softc *sc); */ 182 183 CFATTACH_DECL_NEW(qt, sizeof(struct qt_softc), 184 qtmatch, qtattach, NULL, NULL); 185 186 /* 187 * Maximum packet size needs to include 4 bytes for the CRC 188 * on received packets. 189 */ 190 #define MAXPACKETSIZE (ETHERMTU + sizeof (struct ether_header) + 4) 191 #define MINPACKETSIZE 64 192 193 #define QT_WCSR(csr, val) \ 194 bus_space_write_2(sc->sc_iot, sc->sc_ioh, csr, val) 195 #define QT_RCSR(csr) \ 196 bus_space_read_2(sc->sc_iot, sc->sc_ioh, csr) 197 198 199 #define loint(x) ((int)(x) & 0xffff) 200 #define hiint(x) (((int)(x) >> 16) & 0x3f) 201 202 /* 203 * Check if this card is a turbo delqa. 204 */ 205 int 206 qtmatch(device_t parent, cfdata_t cf, void *aux) 207 { 208 struct qt_softc ssc; 209 struct qt_softc *sc = &ssc; 210 struct uba_attach_args *ua = aux; 211 struct uba_softc *uh = device_private(parent); 212 struct qt_init *qi; 213 struct ubinfo ui; 214 215 sc->sc_iot = ua->ua_iot; 216 sc->sc_ioh = ua->ua_ioh; 217 if (qtturbo(sc) == 0) 218 return 0; /* Not a turbo card */ 219 220 /* Force the card to interrupt */ 221 ui.ui_size = sizeof(struct qt_init); 222 if (ubmemalloc(uh, &ui, 0)) 223 return 0; /* Failed */ 224 qi = (struct qt_init *)ui.ui_vaddr; 225 memset(qi, 0, sizeof(struct qt_init)); 226 qi->vector = uh->uh_lastiv - 4; 227 qi->options = INIT_OPTIONS_INT; 228 229 QT_WCSR(CSR_IBAL, loint(ui.ui_baddr)); 230 QT_WCSR(CSR_IBAH, hiint(ui.ui_baddr)); 231 QT_WCSR(CSR_SRQR, 2); 232 delay(100000); /* Wait some time for interrupt */ 233 QT_WCSR(CSR_SRQR, 3); /* Stop card */ 234 235 ubmemfree(uh, &ui); 236 237 return 10; 238 } 239 240 241 /* 242 * Interface exists. More accurately, something exists at the CSR (see 243 * sys/sys_net.c) -- there's no guarantee it's a DELQA-YM. 244 * 245 * The ring descriptors are initialized, the buffers allocated using first the 246 * DMA region allocated at network load time and then later main memory. The 247 * INIT block is filled in and the device is poked/probed to see if it really 248 * is a DELQA-YM. If the device is not a -YM then a message is printed and 249 * the 'if_attach' call is skipped. For a -YM the START command is issued, 250 * but the device is not marked as running|up - that happens at interrupt level 251 * when the device interrupts to say it has started. 252 */ 253 254 void 255 qtattach(device_t parent, device_t self, void *aux) 256 { 257 struct qt_softc *sc = device_private(self); 258 struct ifnet *ifp = &sc->is_if; 259 struct uba_attach_args *ua = aux; 260 261 sc->sc_dev = self; 262 263 uba_intr_establish(ua->ua_icookie, ua->ua_cvec, qtintr, sc, 264 &sc->sc_intrcnt); 265 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt, 266 device_xname(sc->sc_dev), "intr"); 267 268 sc->sc_uh = device_private(parent); 269 sc->sc_iot = ua->ua_iot; 270 sc->sc_ioh = ua->ua_ioh; 271 sc->sc_uh->uh_lastiv -= 4; 272 sc->vector = sc->sc_uh->uh_lastiv; 273 274 /* 275 * Now allocate the buffers and initialize the buffers. This should _never_ 276 * fail because main memory is allocated after the DMA pool is used up. 277 */ 278 279 sc->is_addr[0] = QT_RCSR(0); 280 sc->is_addr[1] = QT_RCSR(2); 281 sc->is_addr[2] = QT_RCSR(4); 282 sc->is_addr[3] = QT_RCSR(6); 283 sc->is_addr[4] = QT_RCSR(8); 284 sc->is_addr[5] = QT_RCSR(10); 285 286 strcpy(ifp->if_xname, device_xname(sc->sc_dev)); 287 ifp->if_softc = sc; 288 ifp->if_flags = IFF_BROADCAST|IFF_MULTICAST; 289 ifp->if_ioctl = qtioctl; 290 ifp->if_start = qtstart; 291 ifp->if_init = qtinit; 292 ifp->if_stop = qtstop; 293 IFQ_SET_READY(&ifp->if_snd); 294 295 printf("\n%s: delqa-plus in Turbo mode, hardware address %s\n", 296 device_xname(sc->sc_dev), ether_sprintf(sc->is_addr)); 297 if_attach(ifp); 298 ether_ifattach(ifp, sc->is_addr); 299 } 300 301 int 302 qtturbo(struct qt_softc *sc) 303 { 304 int i; 305 306 /* 307 * Issue the software reset. Delay 150us. The board should now be in 308 * DELQA-Normal mode. Set ITB and DEQTA select. If both bits do not 309 * stay turned on then the board is not a DELQA-YM. 310 */ 311 QT_WCSR(CSR_ARQR, ARQR_SR); 312 QT_WCSR(CSR_ARQR, 0); 313 delay(150L); 314 315 QT_WCSR(CSR_SRR, 0x8001); /* MS | ITB */ 316 i = QT_RCSR(CSR_SRR); 317 QT_WCSR(CSR_SRR, 0x8000); /* Turn off ITB, set DELQA select */ 318 if (i != 0x8001) 319 return(0); 320 /* 321 * Board is a DELQA-YM. Send the commands to enable Turbo mode. Delay 322 * 1 second, testing the SRR register every millisecond to see if the 323 * board has shifted to Turbo mode. 324 */ 325 QT_WCSR(CSR_XCR0, 0x0baf); 326 QT_WCSR(CSR_XCR1, 0xff00); 327 for (i = 0; i < 1000; i++) 328 { 329 if ((QT_RCSR(CSR_SRR) & SRR_RESP) == 1) 330 break; 331 delay(1000L); 332 } 333 if (i >= 1000) 334 { 335 printf("qt !Turbo\n"); 336 return(0); 337 } 338 return(1); 339 } 340 341 int 342 qtinit(struct ifnet *ifp) 343 { 344 struct qt_softc *sc = ifp->if_softc; 345 struct qt_init *iniblk; 346 struct ifrw *ifrw; 347 struct ifxmt *ifxp; 348 struct qt_rring *rp; 349 struct qt_tring *tp; 350 int i, error; 351 352 if (ifp->if_flags & IFF_RUNNING) { 353 /* Cancel any pending I/O. */ 354 qtstop(ifp, 0); 355 } 356 357 if (sc->sc_ib == NULL) { 358 if (if_ubaminit(&sc->sc_ifuba, sc->sc_uh, 359 MCLBYTES, sc->sc_ifr, NRCV, sc->sc_ifw, NXMT)) { 360 printf("%s: can't initialize\n", device_xname(sc->sc_dev)); 361 ifp->if_flags &= ~IFF_UP; 362 return 0; 363 } 364 sc->sc_ui.ui_size = sizeof(struct qt_cdata); 365 if ((error = ubmemalloc(sc->sc_uh, &sc->sc_ui, 0))) { 366 printf(": failed ubmemalloc(), error = %d\n", error); 367 return error; 368 } 369 sc->sc_ib = (struct qt_cdata *)sc->sc_ui.ui_vaddr; 370 sc->sc_pib = (struct qt_cdata *)sc->sc_ui.ui_baddr; 371 372 /* 373 * Fill in most of the INIT block: vector, options (interrupt enable), ring 374 * locations. The physical address is copied from the ROMs as part of the 375 * -YM testing proceedure. The CSR is saved here rather than in qtinit() 376 * because the qtturbo() routine needs it. 377 * 378 * The INIT block must be quadword aligned. Using malloc() guarantees click 379 * (64 byte) alignment. Since the only time the INIT block is referenced is 380 * at 'startup' or 'reset' time there is really no time penalty (and a modest 381 * D space savings) involved. 382 */ 383 memset(sc->sc_ib, 0, sizeof(struct qt_cdata)); 384 iniblk = &sc->sc_ib->qc_init; 385 386 iniblk->vector = sc->vector; 387 memcpy(iniblk->paddr, sc->is_addr, 6); 388 389 iniblk->options = INIT_OPTIONS_INT; 390 iniblk->rx_lo = loint(&sc->sc_pib->qc_r); 391 iniblk->rx_hi = hiint(&sc->sc_pib->qc_r); 392 iniblk->tx_lo = loint(&sc->sc_pib->qc_t); 393 iniblk->tx_hi = hiint(&sc->sc_pib->qc_t); 394 } 395 iniblk = &sc->sc_ib->qc_init; 396 iniblk->mode = ifp->if_flags & IFF_PROMISC ? INIT_MODE_PRO : 0; 397 398 399 /* 400 * Now initialize the receive ring descriptors. Because this routine can be 401 * called with outstanding I/O operations we check the ring descriptors for 402 * a non-zero 'rhost0' (or 'thost0') word and place those buffers back on 403 * the free list. 404 */ 405 for (i = 0; i < NRCV; i++) { 406 rp = &sc->sc_ib->qc_r[i]; 407 ifrw = &sc->sc_ifr[i]; 408 rp->rmd1 = MCLBYTES; 409 rp->rmd4 = loint(ifrw->ifrw_info); 410 rp->rmd5 = hiint(ifrw->ifrw_info); 411 rp->rmd3 = 0; /* clear RMD3_OWN */ 412 } 413 for (i = 0; i < NXMT; i++) { 414 tp = &sc->sc_ib->qc_t[i]; 415 ifxp = &sc->sc_ifw[i]; 416 tp->tmd4 = loint(ifxp->ifw_info); 417 tp->tmd5 = hiint(ifxp->ifw_info); 418 tp->tmd3 = TMD3_OWN; 419 } 420 421 sc->xnext = sc->xlast = sc->nxmit = 0; 422 sc->rindex = 0; 423 sc->nxtrcv = 0; 424 sc->nrcv = 0; 425 426 /* 427 * Now we tell the device the address of the INIT block. The device 428 * _must_ be in the Turbo mode at this time. The "START" command is 429 * then issued to the device. A 1 second timeout is then started. 430 * When the interrupt occurs the IFF_UP|IFF_RUNNING state is entered and 431 * full operations will proceed. If the timeout expires without an interrupt 432 * being received an error is printed, the flags cleared and the device left 433 * marked down. 434 */ 435 QT_WCSR(CSR_IBAL, loint(&sc->sc_pib->qc_init)); 436 QT_WCSR(CSR_IBAH, hiint(&sc->sc_pib->qc_init)); 437 QT_WCSR(CSR_SRQR, 2); 438 439 sc->is_if.if_flags |= IFF_RUNNING; 440 return 0; 441 } 442 443 /* 444 * Start output on interface. 445 */ 446 447 void 448 qtstart(struct ifnet *ifp) 449 { 450 int len, nxmit; 451 struct qt_softc *sc = ifp->if_softc; 452 struct qt_tring *rp; 453 struct mbuf *m = NULL; 454 455 for (nxmit = sc->nxmit; nxmit < NXMT; nxmit++) { 456 IF_DEQUEUE(&sc->is_if.if_snd, m); 457 if (m == 0) 458 break; 459 460 rp = &sc->sc_ib->qc_t[sc->xnext]; 461 if ((rp->tmd3 & TMD3_OWN) == 0) 462 panic("qtstart"); 463 464 #if NBPFILTER > 0 465 if (ifp->if_bpf) 466 bpf_mtap(ifp->if_bpf, m); 467 #endif 468 469 len = if_ubaput(&sc->sc_ifuba, &sc->sc_ifw[sc->xnext], m); 470 if (len < MINPACKETSIZE) 471 len = MINPACKETSIZE; 472 rp->tmd3 = len & TMD3_BCT; /* set length,clear ownership */ 473 QT_WCSR(CSR_ARQR, ARQR_TRQ); /* tell device it has buffer */ 474 475 if (++sc->xnext >= NXMT) 476 sc->xnext = 0; 477 } 478 if (sc->nxmit != nxmit) 479 sc->nxmit = nxmit; 480 /* XXX - set OACTIVE */ 481 } 482 483 /* 484 * General interrupt service routine. Receive, transmit, device start 485 * interrupts and timeouts come here. Check for hard device errors and print a 486 * message if any errors are found. If we are waiting for the device to 487 * START then check if the device is now running. 488 */ 489 490 void 491 qtintr(void *arg) 492 { 493 struct qt_softc *sc = arg; 494 struct ifnet *ifp = &sc->is_if; 495 short status; 496 497 498 status = QT_RCSR(CSR_SRR); 499 if (status < 0) 500 /* should we reset the device after a bunch of these errs? */ 501 qtsrr(sc, status); 502 if ((ifp->if_flags & IFF_UP) == 0) 503 return; /* Unwanted interrupt */ 504 qtrint(sc); 505 qttint(sc); 506 qtstart(&sc->is_ec.ec_if); 507 } 508 509 /* 510 * Transmit interrupt service. Only called if there are outstanding transmit 511 * requests which could have completed. The DELQA-YM doesn't provide the 512 * status bits telling the kind (receive, transmit) of interrupt. 513 */ 514 515 #define BBLMIS (TMD2_BBL|TMD2_MIS) 516 517 void 518 qttint(struct qt_softc *sc) 519 { 520 struct qt_tring *rp; 521 522 while (sc->nxmit > 0) 523 { 524 rp = &sc->sc_ib->qc_t[sc->xlast]; 525 if ((rp->tmd3 & TMD3_OWN) == 0) 526 break; 527 sc->is_if.if_opackets++; 528 /* 529 * Collisions don't count as output errors, but babbling and missing packets 530 * do count as output errors. 531 */ 532 if (rp->tmd2 & TMD2_CER) 533 sc->is_if.if_collisions++; 534 if ((rp->tmd0 & TMD0_ERR1) || 535 ((rp->tmd2 & TMD2_ERR2) && (rp->tmd2 & BBLMIS))) 536 { 537 #ifdef QTDEBUG 538 char buf[100]; 539 snprintb(buf, sizeof(buf), TMD2_BITS, rp->tmd2); 540 printf("%s: tmd2 %s\n", device_xname(sc->sc_dev), buf); 541 #endif 542 sc->is_if.if_oerrors++; 543 } 544 if_ubaend(&sc->sc_ifuba, &sc->sc_ifw[sc->xlast]); 545 if (++sc->xlast >= NXMT) 546 sc->xlast = 0; 547 sc->nxmit--; 548 } 549 } 550 551 /* 552 * Receive interrupt service. Pull packet off the interface and put into 553 * a mbuf chain for processing later. 554 */ 555 556 void 557 qtrint(struct qt_softc *sc) 558 { 559 struct qt_rring *rp; 560 struct ifnet *ifp = &sc->is_ec.ec_if; 561 struct mbuf *m; 562 int len; 563 564 while (sc->sc_ib->qc_r[(int)sc->rindex].rmd3 & RMD3_OWN) 565 { 566 rp = &sc->sc_ib->qc_r[(int)sc->rindex]; 567 if ((rp->rmd0 & (RMD0_STP|RMD0_ENP)) != (RMD0_STP|RMD0_ENP)) 568 { 569 printf("%s: chained packet\n", device_xname(sc->sc_dev)); 570 sc->is_if.if_ierrors++; 571 goto rnext; 572 } 573 len = (rp->rmd1 & RMD1_MCNT) - 4; /* -4 for CRC */ 574 sc->is_if.if_ipackets++; 575 576 if ((rp->rmd0 & RMD0_ERR3) || (rp->rmd2 & RMD2_ERR4)) 577 { 578 #ifdef QTDEBUG 579 char buf[100]; 580 snprintb(buf, sizeof(buf), RMD0_BITS, rp->rmd0); 581 printf("%s: rmd0 %s\n", device_xname(sc->sc_dev), buf); 582 snprintb(buf, sizeof(buf), RMD2_BITS, rp->rmd2); 583 printf("%s: rmd2 %s\n", device_xname(sc->sc_dev), buf); 584 #endif 585 sc->is_if.if_ierrors++; 586 goto rnext; 587 } 588 m = if_ubaget(&sc->sc_ifuba, &sc->sc_ifr[(int)sc->rindex], 589 ifp, len); 590 if (m == 0) { 591 sc->is_if.if_ierrors++; 592 goto rnext; 593 } 594 #if NBPFILTER > 0 595 if (ifp->if_bpf) 596 bpf_mtap(ifp->if_bpf, m); 597 #endif 598 (*ifp->if_input)(ifp, m); 599 rnext: 600 --sc->nrcv; 601 rp->rmd3 = 0; 602 rp->rmd1 = MCLBYTES; 603 if (++sc->rindex >= NRCV) 604 sc->rindex = 0; 605 } 606 QT_WCSR(CSR_ARQR, ARQR_RRQ); /* tell device it has buffer */ 607 } 608 609 int 610 qtioctl(struct ifnet *ifp, u_long cmd, void *data) 611 { 612 int s, error; 613 614 s = splnet(); 615 616 error = ether_ioctl(ifp, cmd, data); 617 if (error == ENETRESET) { 618 if (ifp->if_flags & IFF_RUNNING) 619 error = qtinit(ifp); 620 else 621 error = 0; 622 } 623 splx(s); 624 return (error); 625 } 626 627 void 628 qtsrr(struct qt_softc *sc, int srrbits) 629 { 630 char buf[100]; 631 snprintb(buf, sizeof(buf), SRR_BITS, srrbits); 632 printf("%s: srr=%s\n", device_xname(sc->sc_dev), buf); 633 } 634 635 /* 636 * Stop activity on the interface. 637 * Lose outstanding transmit requests. XXX - not good for multicast. 638 */ 639 void 640 qtstop(struct ifnet *ifp, int disable) 641 { 642 struct qt_softc *sc = ifp->if_softc; 643 int i; 644 645 QT_WCSR(CSR_SRQR, 3); 646 for (i = 0; i < 100; i++) 647 if ((QT_RCSR(CSR_SRR) & SRR_RESP) == 3) 648 break; 649 if (QT_RCSR(CSR_SRR) & SRR_FES) 650 qtsrr(sc, QT_RCSR(CSR_SRR)); 651 /* Forget already queued transmit requests */ 652 while (sc->nxmit > 0) { 653 if_ubaend(&sc->sc_ifuba, &sc->sc_ifw[sc->xlast]); 654 if (++sc->xlast >= NXMT) 655 sc->xlast = 0; 656 sc->nxmit--; 657 } 658 /* Handle late received packets */ 659 qtrint(sc); 660 ifp->if_flags &= ~IFF_RUNNING; 661 } 662 663 #ifdef notyet 664 /* 665 * Reset the device. This moves it from DELQA-T mode to DELQA-Normal mode. 666 * After the reset put the device back in -T mode. Then call qtinit() to 667 * reinitialize the ring structures and issue the 'timeout' for the "device 668 * started interrupt". 669 */ 670 671 void 672 qtreset(sc) 673 struct qt_softc *sc; 674 { 675 676 qtturbo(sc); 677 qtinit(&sc->is_ec.ec_if); 678 } 679 #endif 680