if_qt.c revision 1.21.14.1
1 /* $NetBSD: if_qt.c,v 1.21.14.1 2018/06/25 07:26:01 pgoyette 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 (at) 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 1.21.14.1 2018/06/25 07:26:01 pgoyette Exp $"); 84 85 #include "opt_inet.h" 86 87 #include <sys/param.h> 88 #include <sys/systm.h> 89 #include <sys/mbuf.h> 90 #include <sys/protosw.h> 91 #include <sys/socket.h> 92 #include <sys/ioctl.h> 93 #include <sys/device.h> 94 #include <sys/errno.h> 95 #include <sys/syslog.h> 96 #include <sys/time.h> 97 #include <sys/kernel.h> 98 99 #include <net/if.h> 100 #include <net/if_ether.h> 101 #include <net/netisr.h> 102 #include <net/route.h> 103 #include <net/bpf.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 #include <sys/bus.h> 114 115 #include <dev/qbus/ubavar.h> 116 #include <dev/qbus/if_uba.h> 117 #include <dev/qbus/if_qtreg.h> 118 119 #define NRCV QT_MAX_RCV /* Receive descriptors (must be == 32) */ 120 #define NXMT QT_MAX_XMT /* Transmit descriptors (must be == 12) */ 121 #if NRCV != 32 || NXMT != 12 122 hardware requires these sizes. 123 #endif 124 125 /* 126 * Control data structures, must be in DMA-friendly memory. 127 */ 128 struct qt_cdata { 129 struct qt_init qc_init; /* Init block */ 130 struct qt_rring qc_r[NRCV]; /* Receive descriptor ring */ 131 struct qt_tring qc_t[NXMT]; /* Transmit descriptor ring */ 132 }; 133 134 struct qt_softc { 135 device_t sc_dev; /* Configuration common part */ 136 struct ethercom is_ec; /* common part - must be first */ 137 struct uba_softc *sc_uh; 138 struct evcnt sc_intrcnt; /* Interrupt counting */ 139 #define is_if is_ec.ec_if /* network-visible interface */ 140 u_int8_t is_addr[ETHER_ADDR_LEN]; /* hardware Ethernet address */ 141 bus_space_tag_t sc_iot; 142 bus_addr_t sc_ioh; 143 144 struct ubinfo sc_ui; /* control block address desc */ 145 struct qt_cdata *sc_ib; /* virt address of ctrl block */ 146 struct qt_cdata *sc_pib; /* phys address of ctrl block */ 147 148 struct ifubinfo sc_ifuba; /* UNIBUS resources */ 149 struct ifrw sc_ifr[NRCV]; /* UNIBUS receive buffer maps */ 150 struct ifxmt sc_ifw[NXMT]; /* UNIBUS receive buffer maps */ 151 152 int rindex; /* Receive Completed Index */ 153 int nxtrcv; /* Next Receive Index */ 154 int nrcv; /* Number of Receives active */ 155 156 int xnext; /* Next descriptor to transmit */ 157 int xlast; /* Last descriptor transmitted */ 158 int nxmit; /* # packets in send queue */ 159 160 short vector; /* Interrupt vector assigned */ 161 }; 162 163 static int qtmatch(device_t, cfdata_t, void *); 164 static void qtattach(device_t, device_t, void *); 165 static void qtintr(void *); 166 static int qtinit(struct ifnet *); 167 static int qtioctl(struct ifnet *, u_long, void *); 168 static int qtturbo(struct qt_softc *); 169 static void qtstart(struct ifnet *ifp); 170 static void qtstop(struct ifnet *ifp, int disable); 171 static void qtsrr(struct qt_softc *, int); 172 static void qtrint(struct qt_softc *sc); 173 static void qttint(struct qt_softc *sc); 174 175 /* static void qtrestart(struct qt_softc *sc); */ 176 177 CFATTACH_DECL_NEW(qt, sizeof(struct qt_softc), 178 qtmatch, qtattach, NULL, NULL); 179 180 /* 181 * Maximum packet size needs to include 4 bytes for the CRC 182 * on received packets. 183 */ 184 #define MAXPACKETSIZE (ETHERMTU + sizeof (struct ether_header) + 4) 185 #define MINPACKETSIZE 64 186 187 #define QT_WCSR(csr, val) \ 188 bus_space_write_2(sc->sc_iot, sc->sc_ioh, csr, val) 189 #define QT_RCSR(csr) \ 190 bus_space_read_2(sc->sc_iot, sc->sc_ioh, csr) 191 192 193 #define loint(x) ((int)(x) & 0xffff) 194 #define hiint(x) (((int)(x) >> 16) & 0x3f) 195 196 /* 197 * Check if this card is a turbo delqa. 198 */ 199 int 200 qtmatch(device_t parent, cfdata_t cf, void *aux) 201 { 202 struct qt_softc ssc; 203 struct qt_softc *sc = &ssc; 204 struct uba_attach_args *ua = aux; 205 struct uba_softc *uh = device_private(parent); 206 struct qt_init *qi; 207 struct ubinfo ui; 208 209 sc->sc_iot = ua->ua_iot; 210 sc->sc_ioh = ua->ua_ioh; 211 if (qtturbo(sc) == 0) 212 return 0; /* Not a turbo card */ 213 214 /* Force the card to interrupt */ 215 ui.ui_size = sizeof(struct qt_init); 216 if (ubmemalloc(uh, &ui, 0)) 217 return 0; /* Failed */ 218 qi = (struct qt_init *)ui.ui_vaddr; 219 memset(qi, 0, sizeof(struct qt_init)); 220 qi->vector = uh->uh_lastiv - 4; 221 qi->options = INIT_OPTIONS_INT; 222 223 QT_WCSR(CSR_IBAL, loint(ui.ui_baddr)); 224 QT_WCSR(CSR_IBAH, hiint(ui.ui_baddr)); 225 QT_WCSR(CSR_SRQR, 2); 226 delay(100000); /* Wait some time for interrupt */ 227 QT_WCSR(CSR_SRQR, 3); /* Stop card */ 228 229 ubmemfree(uh, &ui); 230 231 return 10; 232 } 233 234 235 /* 236 * Interface exists. More accurately, something exists at the CSR (see 237 * sys/sys_net.c) -- there's no guarantee it's a DELQA-YM. 238 * 239 * The ring descriptors are initialized, the buffers allocated using first the 240 * DMA region allocated at network load time and then later main memory. The 241 * INIT block is filled in and the device is poked/probed to see if it really 242 * is a DELQA-YM. If the device is not a -YM then a message is printed and 243 * the 'if_attach' call is skipped. For a -YM the START command is issued, 244 * but the device is not marked as running|up - that happens at interrupt level 245 * when the device interrupts to say it has started. 246 */ 247 248 void 249 qtattach(device_t parent, device_t self, void *aux) 250 { 251 struct qt_softc *sc = device_private(self); 252 struct ifnet *ifp = &sc->is_if; 253 struct uba_attach_args *ua = aux; 254 255 sc->sc_dev = self; 256 257 uba_intr_establish(ua->ua_icookie, ua->ua_cvec, qtintr, sc, 258 &sc->sc_intrcnt); 259 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt, 260 device_xname(sc->sc_dev), "intr"); 261 262 sc->sc_uh = device_private(parent); 263 sc->sc_iot = ua->ua_iot; 264 sc->sc_ioh = ua->ua_ioh; 265 sc->sc_uh->uh_lastiv -= 4; 266 sc->vector = sc->sc_uh->uh_lastiv; 267 268 /* 269 * Now allocate the buffers and initialize the buffers. This should _never_ 270 * fail because main memory is allocated after the DMA pool is used up. 271 */ 272 273 sc->is_addr[0] = QT_RCSR(0); 274 sc->is_addr[1] = QT_RCSR(2); 275 sc->is_addr[2] = QT_RCSR(4); 276 sc->is_addr[3] = QT_RCSR(6); 277 sc->is_addr[4] = QT_RCSR(8); 278 sc->is_addr[5] = QT_RCSR(10); 279 280 strcpy(ifp->if_xname, device_xname(sc->sc_dev)); 281 ifp->if_softc = sc; 282 ifp->if_flags = IFF_BROADCAST|IFF_MULTICAST; 283 ifp->if_ioctl = qtioctl; 284 ifp->if_start = qtstart; 285 ifp->if_init = qtinit; 286 ifp->if_stop = qtstop; 287 IFQ_SET_READY(&ifp->if_snd); 288 289 printf("\n%s: delqa-plus in Turbo mode, hardware address %s\n", 290 device_xname(sc->sc_dev), ether_sprintf(sc->is_addr)); 291 if_attach(ifp); 292 ether_ifattach(ifp, sc->is_addr); 293 } 294 295 int 296 qtturbo(struct qt_softc *sc) 297 { 298 int i; 299 300 /* 301 * Issue the software reset. Delay 150us. The board should now be in 302 * DELQA-Normal mode. Set ITB and DEQTA select. If both bits do not 303 * stay turned on then the board is not a DELQA-YM. 304 */ 305 QT_WCSR(CSR_ARQR, ARQR_SR); 306 QT_WCSR(CSR_ARQR, 0); 307 delay(150L); 308 309 QT_WCSR(CSR_SRR, 0x8001); /* MS | ITB */ 310 i = QT_RCSR(CSR_SRR); 311 QT_WCSR(CSR_SRR, 0x8000); /* Turn off ITB, set DELQA select */ 312 if (i != 0x8001) 313 return(0); 314 /* 315 * Board is a DELQA-YM. Send the commands to enable Turbo mode. Delay 316 * 1 second, testing the SRR register every millisecond to see if the 317 * board has shifted to Turbo mode. 318 */ 319 QT_WCSR(CSR_XCR0, 0x0baf); 320 QT_WCSR(CSR_XCR1, 0xff00); 321 for (i = 0; i < 1000; i++) 322 { 323 if ((QT_RCSR(CSR_SRR) & SRR_RESP) == 1) 324 break; 325 delay(1000L); 326 } 327 if (i >= 1000) 328 { 329 printf("qt !Turbo\n"); 330 return(0); 331 } 332 return(1); 333 } 334 335 int 336 qtinit(struct ifnet *ifp) 337 { 338 struct qt_softc *sc = ifp->if_softc; 339 struct qt_init *iniblk; 340 struct ifrw *ifrw; 341 struct ifxmt *ifxp; 342 struct qt_rring *rp; 343 struct qt_tring *tp; 344 int i, error; 345 346 if (ifp->if_flags & IFF_RUNNING) { 347 /* Cancel any pending I/O. */ 348 qtstop(ifp, 0); 349 } 350 351 if (sc->sc_ib == NULL) { 352 if (if_ubaminit(&sc->sc_ifuba, sc->sc_uh, 353 MCLBYTES, sc->sc_ifr, NRCV, sc->sc_ifw, NXMT)) { 354 printf("%s: can't initialize\n", device_xname(sc->sc_dev)); 355 ifp->if_flags &= ~IFF_UP; 356 return 0; 357 } 358 sc->sc_ui.ui_size = sizeof(struct qt_cdata); 359 if ((error = ubmemalloc(sc->sc_uh, &sc->sc_ui, 0))) { 360 printf(": failed ubmemalloc(), error = %d\n", error); 361 return error; 362 } 363 sc->sc_ib = (struct qt_cdata *)sc->sc_ui.ui_vaddr; 364 sc->sc_pib = (struct qt_cdata *)sc->sc_ui.ui_baddr; 365 366 /* 367 * Fill in most of the INIT block: vector, options (interrupt enable), ring 368 * locations. The physical address is copied from the ROMs as part of the 369 * -YM testing procedure. The CSR is saved here rather than in qtinit() 370 * because the qtturbo() routine needs it. 371 * 372 * The INIT block must be quadword aligned. Using malloc() guarantees click 373 * (64 byte) alignment. Since the only time the INIT block is referenced is 374 * at 'startup' or 'reset' time there is really no time penalty (and a modest 375 * D space savings) involved. 376 */ 377 memset(sc->sc_ib, 0, sizeof(struct qt_cdata)); 378 iniblk = &sc->sc_ib->qc_init; 379 380 iniblk->vector = sc->vector; 381 memcpy(iniblk->paddr, sc->is_addr, 6); 382 383 iniblk->options = INIT_OPTIONS_INT; 384 iniblk->rx_lo = loint(&sc->sc_pib->qc_r); 385 iniblk->rx_hi = hiint(&sc->sc_pib->qc_r); 386 iniblk->tx_lo = loint(&sc->sc_pib->qc_t); 387 iniblk->tx_hi = hiint(&sc->sc_pib->qc_t); 388 } 389 iniblk = &sc->sc_ib->qc_init; 390 iniblk->mode = ifp->if_flags & IFF_PROMISC ? INIT_MODE_PRO : 0; 391 392 393 /* 394 * Now initialize the receive ring descriptors. Because this routine can be 395 * called with outstanding I/O operations we check the ring descriptors for 396 * a non-zero 'rhost0' (or 'thost0') word and place those buffers back on 397 * the free list. 398 */ 399 for (i = 0; i < NRCV; i++) { 400 rp = &sc->sc_ib->qc_r[i]; 401 ifrw = &sc->sc_ifr[i]; 402 rp->rmd1 = MCLBYTES; 403 rp->rmd4 = loint(ifrw->ifrw_info); 404 rp->rmd5 = hiint(ifrw->ifrw_info); 405 rp->rmd3 = 0; /* clear RMD3_OWN */ 406 } 407 for (i = 0; i < NXMT; i++) { 408 tp = &sc->sc_ib->qc_t[i]; 409 ifxp = &sc->sc_ifw[i]; 410 tp->tmd4 = loint(ifxp->ifw_info); 411 tp->tmd5 = hiint(ifxp->ifw_info); 412 tp->tmd3 = TMD3_OWN; 413 } 414 415 sc->xnext = sc->xlast = sc->nxmit = 0; 416 sc->rindex = 0; 417 sc->nxtrcv = 0; 418 sc->nrcv = 0; 419 420 /* 421 * Now we tell the device the address of the INIT block. The device 422 * _must_ be in the Turbo mode at this time. The "START" command is 423 * then issued to the device. A 1 second timeout is then started. 424 * When the interrupt occurs the IFF_UP|IFF_RUNNING state is entered and 425 * full operations will proceed. If the timeout expires without an interrupt 426 * being received an error is printed, the flags cleared and the device left 427 * marked down. 428 */ 429 QT_WCSR(CSR_IBAL, loint(&sc->sc_pib->qc_init)); 430 QT_WCSR(CSR_IBAH, hiint(&sc->sc_pib->qc_init)); 431 QT_WCSR(CSR_SRQR, 2); 432 433 sc->is_if.if_flags |= IFF_RUNNING; 434 return 0; 435 } 436 437 /* 438 * Start output on interface. 439 */ 440 441 void 442 qtstart(struct ifnet *ifp) 443 { 444 int len, nxmit; 445 struct qt_softc *sc = ifp->if_softc; 446 struct qt_tring *rp; 447 struct mbuf *m = NULL; 448 449 for (nxmit = sc->nxmit; nxmit < NXMT; nxmit++) { 450 IF_DEQUEUE(&sc->is_if.if_snd, m); 451 if (m == 0) 452 break; 453 454 rp = &sc->sc_ib->qc_t[sc->xnext]; 455 if ((rp->tmd3 & TMD3_OWN) == 0) 456 panic("qtstart"); 457 458 bpf_mtap(ifp, m); 459 460 len = if_ubaput(&sc->sc_ifuba, &sc->sc_ifw[sc->xnext], m); 461 if (len < MINPACKETSIZE) 462 len = MINPACKETSIZE; 463 rp->tmd3 = len & TMD3_BCT; /* set length,clear ownership */ 464 QT_WCSR(CSR_ARQR, ARQR_TRQ); /* tell device it has buffer */ 465 466 if (++sc->xnext >= NXMT) 467 sc->xnext = 0; 468 } 469 if (sc->nxmit != nxmit) 470 sc->nxmit = nxmit; 471 /* XXX - set OACTIVE */ 472 } 473 474 /* 475 * General interrupt service routine. Receive, transmit, device start 476 * interrupts and timeouts come here. Check for hard device errors and print a 477 * message if any errors are found. If we are waiting for the device to 478 * START then check if the device is now running. 479 */ 480 481 void 482 qtintr(void *arg) 483 { 484 struct qt_softc *sc = arg; 485 struct ifnet *ifp = &sc->is_if; 486 short status; 487 488 489 status = QT_RCSR(CSR_SRR); 490 if (status < 0) 491 /* should we reset the device after a bunch of these errs? */ 492 qtsrr(sc, status); 493 if ((ifp->if_flags & IFF_UP) == 0) 494 return; /* Unwanted interrupt */ 495 qtrint(sc); 496 qttint(sc); 497 qtstart(&sc->is_ec.ec_if); 498 } 499 500 /* 501 * Transmit interrupt service. Only called if there are outstanding transmit 502 * requests which could have completed. The DELQA-YM doesn't provide the 503 * status bits telling the kind (receive, transmit) of interrupt. 504 */ 505 506 #define BBLMIS (TMD2_BBL|TMD2_MIS) 507 508 void 509 qttint(struct qt_softc *sc) 510 { 511 struct qt_tring *rp; 512 513 while (sc->nxmit > 0) 514 { 515 rp = &sc->sc_ib->qc_t[sc->xlast]; 516 if ((rp->tmd3 & TMD3_OWN) == 0) 517 break; 518 sc->is_if.if_opackets++; 519 /* 520 * Collisions don't count as output errors, but babbling and missing packets 521 * do count as output errors. 522 */ 523 if (rp->tmd2 & TMD2_CER) 524 sc->is_if.if_collisions++; 525 if ((rp->tmd0 & TMD0_ERR1) || 526 ((rp->tmd2 & TMD2_ERR2) && (rp->tmd2 & BBLMIS))) 527 { 528 #ifdef QTDEBUG 529 char buf[100]; 530 snprintb(buf, sizeof(buf), TMD2_BITS, rp->tmd2); 531 printf("%s: tmd2 %s\n", device_xname(sc->sc_dev), buf); 532 #endif 533 sc->is_if.if_oerrors++; 534 } 535 if_ubaend(&sc->sc_ifuba, &sc->sc_ifw[sc->xlast]); 536 if (++sc->xlast >= NXMT) 537 sc->xlast = 0; 538 sc->nxmit--; 539 } 540 } 541 542 /* 543 * Receive interrupt service. Pull packet off the interface and put into 544 * a mbuf chain for processing later. 545 */ 546 547 void 548 qtrint(struct qt_softc *sc) 549 { 550 struct qt_rring *rp; 551 struct ifnet *ifp = &sc->is_ec.ec_if; 552 struct mbuf *m; 553 int len; 554 555 while (sc->sc_ib->qc_r[(int)sc->rindex].rmd3 & RMD3_OWN) 556 { 557 rp = &sc->sc_ib->qc_r[(int)sc->rindex]; 558 if ((rp->rmd0 & (RMD0_STP|RMD0_ENP)) != (RMD0_STP|RMD0_ENP)) 559 { 560 printf("%s: chained packet\n", device_xname(sc->sc_dev)); 561 sc->is_if.if_ierrors++; 562 goto rnext; 563 } 564 len = (rp->rmd1 & RMD1_MCNT) - 4; /* -4 for CRC */ 565 sc->is_if.if_ipackets++; 566 567 if ((rp->rmd0 & RMD0_ERR3) || (rp->rmd2 & RMD2_ERR4)) 568 { 569 #ifdef QTDEBUG 570 char buf[100]; 571 snprintb(buf, sizeof(buf), RMD0_BITS, rp->rmd0); 572 printf("%s: rmd0 %s\n", device_xname(sc->sc_dev), buf); 573 snprintb(buf, sizeof(buf), RMD2_BITS, rp->rmd2); 574 printf("%s: rmd2 %s\n", device_xname(sc->sc_dev), buf); 575 #endif 576 sc->is_if.if_ierrors++; 577 goto rnext; 578 } 579 m = if_ubaget(&sc->sc_ifuba, &sc->sc_ifr[(int)sc->rindex], 580 ifp, len); 581 if (m == 0) { 582 sc->is_if.if_ierrors++; 583 goto rnext; 584 } 585 if_percpuq_enqueue(ifp->if_percpuq, m); 586 rnext: 587 --sc->nrcv; 588 rp->rmd3 = 0; 589 rp->rmd1 = MCLBYTES; 590 if (++sc->rindex >= NRCV) 591 sc->rindex = 0; 592 } 593 QT_WCSR(CSR_ARQR, ARQR_RRQ); /* tell device it has buffer */ 594 } 595 596 int 597 qtioctl(struct ifnet *ifp, u_long cmd, void *data) 598 { 599 int s, error; 600 601 s = splnet(); 602 603 error = ether_ioctl(ifp, cmd, data); 604 if (error == ENETRESET) { 605 if (ifp->if_flags & IFF_RUNNING) 606 error = qtinit(ifp); 607 else 608 error = 0; 609 } 610 splx(s); 611 return (error); 612 } 613 614 void 615 qtsrr(struct qt_softc *sc, int srrbits) 616 { 617 char buf[100]; 618 snprintb(buf, sizeof(buf), SRR_BITS, srrbits); 619 printf("%s: srr=%s\n", device_xname(sc->sc_dev), buf); 620 } 621 622 /* 623 * Stop activity on the interface. 624 * Lose outstanding transmit requests. XXX - not good for multicast. 625 */ 626 void 627 qtstop(struct ifnet *ifp, int disable) 628 { 629 struct qt_softc *sc = ifp->if_softc; 630 int i; 631 632 QT_WCSR(CSR_SRQR, 3); 633 for (i = 0; i < 100; i++) 634 if ((QT_RCSR(CSR_SRR) & SRR_RESP) == 3) 635 break; 636 if (QT_RCSR(CSR_SRR) & SRR_FES) 637 qtsrr(sc, QT_RCSR(CSR_SRR)); 638 /* Forget already queued transmit requests */ 639 while (sc->nxmit > 0) { 640 if_ubaend(&sc->sc_ifuba, &sc->sc_ifw[sc->xlast]); 641 if (++sc->xlast >= NXMT) 642 sc->xlast = 0; 643 sc->nxmit--; 644 } 645 /* Handle late received packets */ 646 qtrint(sc); 647 ifp->if_flags &= ~IFF_RUNNING; 648 } 649 650 #ifdef notyet 651 /* 652 * Reset the device. This moves it from DELQA-T mode to DELQA-Normal mode. 653 * After the reset put the device back in -T mode. Then call qtinit() to 654 * reinitialize the ring structures and issue the 'timeout' for the "device 655 * started interrupt". 656 */ 657 658 void 659 qtreset(sc) 660 struct qt_softc *sc; 661 { 662 663 qtturbo(sc); 664 qtinit(&sc->is_ec.ec_if); 665 } 666 #endif 667
Indexes created Wed Oct 15 07:09:58 GMT 2025