1 /* $NetBSD: if_qt.c,v 1.15 2008/12/16 22:35:34 christos 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 1.15 2008/12/16 22:35:34 christos 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 uba_intr_establish(ua->ua_icookie, ua->ua_cvec, qtintr, sc, 262 &sc->sc_intrcnt); 263 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt, 264 device_xname(sc->sc_dev), "intr"); 265 266 sc->sc_dev = self; 267 sc->sc_uh = device_private(parent); 268 sc->sc_iot = ua->ua_iot; 269 sc->sc_ioh = ua->ua_ioh; 270 sc->sc_uh->uh_lastiv -= 4; 271 sc->vector = sc->sc_uh->uh_lastiv; 272 273 /* 274 * Now allocate the buffers and initialize the buffers. This should _never_ 275 * fail because main memory is allocated after the DMA pool is used up. 276 */ 277 278 sc->is_addr[0] = QT_RCSR(0); 279 sc->is_addr[1] = QT_RCSR(2); 280 sc->is_addr[2] = QT_RCSR(4); 281 sc->is_addr[3] = QT_RCSR(6); 282 sc->is_addr[4] = QT_RCSR(8); 283 sc->is_addr[5] = QT_RCSR(10); 284 285 strcpy(ifp->if_xname, device_xname(sc->sc_dev)); 286 ifp->if_softc = sc; 287 ifp->if_flags = IFF_BROADCAST|IFF_MULTICAST; 288 ifp->if_ioctl = qtioctl; 289 ifp->if_start = qtstart; 290 ifp->if_init = qtinit; 291 ifp->if_stop = qtstop; 292 IFQ_SET_READY(&ifp->if_snd); 293 294 printf("\n%s: delqa-plus in Turbo mode, hardware address %s\n", 295 device_xname(sc->sc_dev), ether_sprintf(sc->is_addr)); 296 if_attach(ifp); 297 ether_ifattach(ifp, sc->is_addr); 298 } 299 300 int 301 qtturbo(struct qt_softc *sc) 302 { 303 int i; 304 305 /* 306 * Issue the software reset. Delay 150us. The board should now be in 307 * DELQA-Normal mode. Set ITB and DEQTA select. If both bits do not 308 * stay turned on then the board is not a DELQA-YM. 309 */ 310 QT_WCSR(CSR_ARQR, ARQR_SR); 311 QT_WCSR(CSR_ARQR, 0); 312 delay(150L); 313 314 QT_WCSR(CSR_SRR, 0x8001); /* MS | ITB */ 315 i = QT_RCSR(CSR_SRR); 316 QT_WCSR(CSR_SRR, 0x8000); /* Turn off ITB, set DELQA select */ 317 if (i != 0x8001) 318 return(0); 319 /* 320 * Board is a DELQA-YM. Send the commands to enable Turbo mode. Delay 321 * 1 second, testing the SRR register every millisecond to see if the 322 * board has shifted to Turbo mode. 323 */ 324 QT_WCSR(CSR_XCR0, 0x0baf); 325 QT_WCSR(CSR_XCR1, 0xff00); 326 for (i = 0; i < 1000; i++) 327 { 328 if ((QT_RCSR(CSR_SRR) & SRR_RESP) == 1) 329 break; 330 delay(1000L); 331 } 332 if (i >= 1000) 333 { 334 printf("qt !Turbo\n"); 335 return(0); 336 } 337 return(1); 338 } 339 340 int 341 qtinit(struct ifnet *ifp) 342 { 343 struct qt_softc *sc = ifp->if_softc; 344 struct qt_init *iniblk; 345 struct ifrw *ifrw; 346 struct ifxmt *ifxp; 347 struct qt_rring *rp; 348 struct qt_tring *tp; 349 int i, error; 350 351 if (ifp->if_flags & IFF_RUNNING) { 352 /* Cancel any pending I/O. */ 353 qtstop(ifp, 0); 354 } 355 356 if (sc->sc_ib == NULL) { 357 if (if_ubaminit(&sc->sc_ifuba, sc->sc_uh, 358 MCLBYTES, sc->sc_ifr, NRCV, sc->sc_ifw, NXMT)) { 359 printf("%s: can't initialize\n", device_xname(sc->sc_dev)); 360 ifp->if_flags &= ~IFF_UP; 361 return 0; 362 } 363 sc->sc_ui.ui_size = sizeof(struct qt_cdata); 364 if ((error = ubmemalloc(sc->sc_uh, &sc->sc_ui, 0))) { 365 printf(": failed ubmemalloc(), error = %d\n", error); 366 return error; 367 } 368 sc->sc_ib = (struct qt_cdata *)sc->sc_ui.ui_vaddr; 369 sc->sc_pib = (struct qt_cdata *)sc->sc_ui.ui_baddr; 370 371 /* 372 * Fill in most of the INIT block: vector, options (interrupt enable), ring 373 * locations. The physical address is copied from the ROMs as part of the 374 * -YM testing proceedure. The CSR is saved here rather than in qtinit() 375 * because the qtturbo() routine needs it. 376 * 377 * The INIT block must be quadword aligned. Using malloc() guarantees click 378 * (64 byte) alignment. Since the only time the INIT block is referenced is 379 * at 'startup' or 'reset' time there is really no time penalty (and a modest 380 * D space savings) involved. 381 */ 382 memset(sc->sc_ib, 0, sizeof(struct qt_cdata)); 383 iniblk = &sc->sc_ib->qc_init; 384 385 iniblk->vector = sc->vector; 386 memcpy(iniblk->paddr, sc->is_addr, 6); 387 388 iniblk->options = INIT_OPTIONS_INT; 389 iniblk->rx_lo = loint(&sc->sc_pib->qc_r); 390 iniblk->rx_hi = hiint(&sc->sc_pib->qc_r); 391 iniblk->tx_lo = loint(&sc->sc_pib->qc_t); 392 iniblk->tx_hi = hiint(&sc->sc_pib->qc_t); 393 } 394 iniblk = &sc->sc_ib->qc_init; 395 iniblk->mode = ifp->if_flags & IFF_PROMISC ? INIT_MODE_PRO : 0; 396 397 398 /* 399 * Now initialize the receive ring descriptors. Because this routine can be 400 * called with outstanding I/O operations we check the ring descriptors for 401 * a non-zero 'rhost0' (or 'thost0') word and place those buffers back on 402 * the free list. 403 */ 404 for (i = 0; i < NRCV; i++) { 405 rp = &sc->sc_ib->qc_r[i]; 406 ifrw = &sc->sc_ifr[i]; 407 rp->rmd1 = MCLBYTES; 408 rp->rmd4 = loint(ifrw->ifrw_info); 409 rp->rmd5 = hiint(ifrw->ifrw_info); 410 rp->rmd3 = 0; /* clear RMD3_OWN */ 411 } 412 for (i = 0; i < NXMT; i++) { 413 tp = &sc->sc_ib->qc_t[i]; 414 ifxp = &sc->sc_ifw[i]; 415 tp->tmd4 = loint(ifxp->ifw_info); 416 tp->tmd5 = hiint(ifxp->ifw_info); 417 tp->tmd3 = TMD3_OWN; 418 } 419 420 sc->xnext = sc->xlast = sc->nxmit = 0; 421 sc->rindex = 0; 422 sc->nxtrcv = 0; 423 sc->nrcv = 0; 424 425 /* 426 * Now we tell the device the address of the INIT block. The device 427 * _must_ be in the Turbo mode at this time. The "START" command is 428 * then issued to the device. A 1 second timeout is then started. 429 * When the interrupt occurs the IFF_UP|IFF_RUNNING state is entered and 430 * full operations will proceed. If the timeout expires without an interrupt 431 * being received an error is printed, the flags cleared and the device left 432 * marked down. 433 */ 434 QT_WCSR(CSR_IBAL, loint(&sc->sc_pib->qc_init)); 435 QT_WCSR(CSR_IBAH, hiint(&sc->sc_pib->qc_init)); 436 QT_WCSR(CSR_SRQR, 2); 437 438 sc->is_if.if_flags |= IFF_RUNNING; 439 return 0; 440 } 441 442 /* 443 * Start output on interface. 444 */ 445 446 void 447 qtstart(struct ifnet *ifp) 448 { 449 int len, nxmit; 450 struct qt_softc *sc = ifp->if_softc; 451 struct qt_tring *rp; 452 struct mbuf *m = NULL; 453 454 for (nxmit = sc->nxmit; nxmit < NXMT; nxmit++) { 455 IF_DEQUEUE(&sc->is_if.if_snd, m); 456 if (m == 0) 457 break; 458 459 rp = &sc->sc_ib->qc_t[sc->xnext]; 460 if ((rp->tmd3 & TMD3_OWN) == 0) 461 panic("qtstart"); 462 463 #if NBPFILTER > 0 464 if (ifp->if_bpf) 465 bpf_mtap(ifp->if_bpf, m); 466 #endif 467 468 len = if_ubaput(&sc->sc_ifuba, &sc->sc_ifw[sc->xnext], m); 469 if (len < MINPACKETSIZE) 470 len = MINPACKETSIZE; 471 rp->tmd3 = len & TMD3_BCT; /* set length,clear ownership */ 472 QT_WCSR(CSR_ARQR, ARQR_TRQ); /* tell device it has buffer */ 473 474 if (++sc->xnext >= NXMT) 475 sc->xnext = 0; 476 } 477 if (sc->nxmit != nxmit) 478 sc->nxmit = nxmit; 479 /* XXX - set OACTIVE */ 480 } 481 482 /* 483 * General interrupt service routine. Receive, transmit, device start 484 * interrupts and timeouts come here. Check for hard device errors and print a 485 * message if any errors are found. If we are waiting for the device to 486 * START then check if the device is now running. 487 */ 488 489 void 490 qtintr(void *arg) 491 { 492 struct qt_softc *sc = arg; 493 struct ifnet *ifp = &sc->is_if; 494 short status; 495 496 497 status = QT_RCSR(CSR_SRR); 498 if (status < 0) 499 /* should we reset the device after a bunch of these errs? */ 500 qtsrr(sc, status); 501 if ((ifp->if_flags & IFF_UP) == 0) 502 return; /* Unwanted interrupt */ 503 qtrint(sc); 504 qttint(sc); 505 qtstart(&sc->is_ec.ec_if); 506 } 507 508 /* 509 * Transmit interrupt service. Only called if there are outstanding transmit 510 * requests which could have completed. The DELQA-YM doesn't provide the 511 * status bits telling the kind (receive, transmit) of interrupt. 512 */ 513 514 #define BBLMIS (TMD2_BBL|TMD2_MIS) 515 516 void 517 qttint(struct qt_softc *sc) 518 { 519 struct qt_tring *rp; 520 521 while (sc->nxmit > 0) 522 { 523 rp = &sc->sc_ib->qc_t[sc->xlast]; 524 if ((rp->tmd3 & TMD3_OWN) == 0) 525 break; 526 sc->is_if.if_opackets++; 527 /* 528 * Collisions don't count as output errors, but babbling and missing packets 529 * do count as output errors. 530 */ 531 if (rp->tmd2 & TMD2_CER) 532 sc->is_if.if_collisions++; 533 if ((rp->tmd0 & TMD0_ERR1) || 534 ((rp->tmd2 & TMD2_ERR2) && (rp->tmd2 & BBLMIS))) 535 { 536 #ifdef QTDEBUG 537 char buf[100]; 538 snprintb(buf, sizeof(buf), TMD2_BITS, rp->tmd2); 539 printf("%s: tmd2 %s\n", device_xname(sc->sc_dev), buf); 540 #endif 541 sc->is_if.if_oerrors++; 542 } 543 if_ubaend(&sc->sc_ifuba, &sc->sc_ifw[sc->xlast]); 544 if (++sc->xlast >= NXMT) 545 sc->xlast = 0; 546 sc->nxmit--; 547 } 548 } 549 550 /* 551 * Receive interrupt service. Pull packet off the interface and put into 552 * a mbuf chain for processing later. 553 */ 554 555 void 556 qtrint(struct qt_softc *sc) 557 { 558 struct qt_rring *rp; 559 struct ifnet *ifp = &sc->is_ec.ec_if; 560 struct mbuf *m; 561 int len; 562 563 while (sc->sc_ib->qc_r[(int)sc->rindex].rmd3 & RMD3_OWN) 564 { 565 rp = &sc->sc_ib->qc_r[(int)sc->rindex]; 566 if ((rp->rmd0 & (RMD0_STP|RMD0_ENP)) != (RMD0_STP|RMD0_ENP)) 567 { 568 printf("%s: chained packet\n", device_xname(sc->sc_dev)); 569 sc->is_if.if_ierrors++; 570 goto rnext; 571 } 572 len = (rp->rmd1 & RMD1_MCNT) - 4; /* -4 for CRC */ 573 sc->is_if.if_ipackets++; 574 575 if ((rp->rmd0 & RMD0_ERR3) || (rp->rmd2 & RMD2_ERR4)) 576 { 577 #ifdef QTDEBUG 578 char buf[100]; 579 snprintb(buf, sizeof(buf), RMD0_BITS, rp->rmd0); 580 printf("%s: rmd0 %s\n", device_xname(sc->sc_dev), buf); 581 snprintb(buf, sizeof(buf), RMD2_BITS, rp->rmd2); 582 printf("%s: rmd2 %s\n", device_xname(sc->sc_dev), buf); 583 #endif 584 sc->is_if.if_ierrors++; 585 goto rnext; 586 } 587 m = if_ubaget(&sc->sc_ifuba, &sc->sc_ifr[(int)sc->rindex], 588 ifp, len); 589 if (m == 0) { 590 sc->is_if.if_ierrors++; 591 goto rnext; 592 } 593 #if NBPFILTER > 0 594 if (ifp->if_bpf) 595 bpf_mtap(ifp->if_bpf, m); 596 #endif 597 (*ifp->if_input)(ifp, m); 598 rnext: 599 --sc->nrcv; 600 rp->rmd3 = 0; 601 rp->rmd1 = MCLBYTES; 602 if (++sc->rindex >= NRCV) 603 sc->rindex = 0; 604 } 605 QT_WCSR(CSR_ARQR, ARQR_RRQ); /* tell device it has buffer */ 606 } 607 608 int 609 qtioctl(struct ifnet *ifp, u_long cmd, void *data) 610 { 611 int s, error; 612 613 s = splnet(); 614 615 error = ether_ioctl(ifp, cmd, data); 616 if (error == ENETRESET) { 617 if (ifp->if_flags & IFF_RUNNING) 618 error = qtinit(ifp); 619 else 620 error = 0; 621 } 622 splx(s); 623 return (error); 624 } 625 626 void 627 qtsrr(struct qt_softc *sc, int srrbits) 628 { 629 char buf[100]; 630 snprintb(buf, sizeof(buf), SRR_BITS, srrbits); 631 printf("%s: srr=%s\n", device_xname(sc->sc_dev), buf); 632 } 633 634 /* 635 * Stop activity on the interface. 636 * Lose outstanding transmit requests. XXX - not good for multicast. 637 */ 638 void 639 qtstop(struct ifnet *ifp, int disable) 640 { 641 struct qt_softc *sc = ifp->if_softc; 642 int i; 643 644 QT_WCSR(CSR_SRQR, 3); 645 for (i = 0; i < 100; i++) 646 if ((QT_RCSR(CSR_SRR) & SRR_RESP) == 3) 647 break; 648 if (QT_RCSR(CSR_SRR) & SRR_FES) 649 qtsrr(sc, QT_RCSR(CSR_SRR)); 650 /* Forget already queued transmit requests */ 651 while (sc->nxmit > 0) { 652 if_ubaend(&sc->sc_ifuba, &sc->sc_ifw[sc->xlast]); 653 if (++sc->xlast >= NXMT) 654 sc->xlast = 0; 655 sc->nxmit--; 656 } 657 /* Handle late received packets */ 658 qtrint(sc); 659 ifp->if_flags &= ~IFF_RUNNING; 660 } 661 662 #ifdef notyet 663 /* 664 * Reset the device. This moves it from DELQA-T mode to DELQA-Normal mode. 665 * After the reset put the device back in -T mode. Then call qtinit() to 666 * reinitialize the ring structures and issue the 'timeout' for the "device 667 * started interrupt". 668 */ 669 670 void 671 qtreset(sc) 672 struct qt_softc *sc; 673 { 674 675 qtturbo(sc); 676 qtinit(&sc->is_ec.ec_if); 677 } 678 #endif 679