if_qe.c revision 1.39
1 /* $NetBSD: if_qe.c,v 1.39 2000/01/24 02:40:29 matt Exp $ */ 2 /* 3 * Copyright (c) 1999 Ludd, University of Lule}, Sweden. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed at Ludd, University of 16 * Lule}, Sweden and its contributors. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Driver for DEQNA/DELQA ethernet cards. 34 * Things that is still to do: 35 * Have a timeout check for hang transmit logic. 36 * Handle ubaresets. Does not work at all right now. 37 * Fix ALLMULTI reception. But someone must tell me how... 38 * Collect statistics. 39 */ 40 41 #include "opt_inet.h" 42 #include "bpfilter.h" 43 44 #include <sys/param.h> 45 #include <sys/mbuf.h> 46 #include <sys/socket.h> 47 #include <sys/device.h> 48 #include <sys/systm.h> 49 #include <sys/sockio.h> 50 51 #include <net/if.h> 52 #include <net/if_ether.h> 53 #include <net/if_dl.h> 54 55 #include <netinet/in.h> 56 #include <netinet/if_inarp.h> 57 58 #if NBPFILTER > 0 59 #include <net/bpf.h> 60 #include <net/bpfdesc.h> 61 #endif 62 63 #include <machine/bus.h> 64 65 #include <dev/qbus/ubavar.h> 66 #include <dev/qbus/if_qereg.h> 67 68 #include "ioconf.h" 69 70 #define RXDESCS 30 /* # of receive descriptors */ 71 #define TXDESCS 60 /* # transmit descs */ 72 73 /* 74 * Structure containing the elements that must be in DMA-safe memory. 75 */ 76 struct qe_cdata { 77 struct qe_ring qc_recv[RXDESCS+1]; /* Receive descriptors */ 78 struct qe_ring qc_xmit[TXDESCS+1]; /* Transmit descriptors */ 79 u_int8_t qc_setup[128]; /* Setup packet layout */ 80 }; 81 82 struct qe_softc { 83 struct device sc_dev; /* Configuration common part */ 84 struct ethercom sc_ec; /* Ethernet common part */ 85 #define sc_if sc_ec.ec_if /* network-visible interface */ 86 bus_space_tag_t sc_iot; 87 bus_addr_t sc_ioh; 88 bus_dma_tag_t sc_dmat; 89 struct qe_cdata *sc_qedata; /* Descriptor struct */ 90 struct qe_cdata *sc_pqedata; /* Unibus address of above */ 91 bus_dmamap_t sc_cmap; /* Map for control structures */ 92 struct mbuf* sc_txmbuf[TXDESCS]; 93 struct mbuf* sc_rxmbuf[RXDESCS]; 94 bus_dmamap_t sc_xmtmap[TXDESCS]; 95 bus_dmamap_t sc_rcvmap[RXDESCS]; 96 int sc_intvec; /* Interrupt vector */ 97 int sc_nexttx; 98 int sc_inq; 99 int sc_lastack; 100 int sc_nextrx; 101 int sc_setup; /* Setup packet in queue */ 102 }; 103 104 static int qematch __P((struct device *, struct cfdata *, void *)); 105 static void qeattach __P((struct device *, struct device *, void *)); 106 static void qeinit __P((struct qe_softc *)); 107 static void qestart __P((struct ifnet *)); 108 static void qeintr __P((void *)); 109 static int qeioctl __P((struct ifnet *, u_long, caddr_t)); 110 static int qe_add_rxbuf __P((struct qe_softc *, int)); 111 static void qe_setup __P((struct qe_softc *)); 112 static void qetimeout __P((struct ifnet *)); 113 114 struct cfattach qe_ca = { 115 sizeof(struct qe_softc), qematch, qeattach 116 }; 117 118 #define QE_WCSR(csr, val) \ 119 bus_space_write_2(sc->sc_iot, sc->sc_ioh, csr, val) 120 #define QE_RCSR(csr) \ 121 bus_space_read_2(sc->sc_iot, sc->sc_ioh, csr) 122 123 #define LOWORD(x) ((int)(x) & 0xffff) 124 #define HIWORD(x) (((int)(x) >> 16) & 0x3f) 125 126 /* 127 * Check for present DEQNA. Done by sending a fake setup packet 128 * and wait for interrupt. 129 */ 130 int 131 qematch(parent, cf, aux) 132 struct device *parent; 133 struct cfdata *cf; 134 void *aux; 135 { 136 bus_dmamap_t cmap; 137 struct qe_softc ssc; 138 struct qe_softc *sc = &ssc; 139 struct uba_attach_args *ua = aux; 140 struct uba_softc *ubasc = (struct uba_softc *)parent; 141 142 #define PROBESIZE (sizeof(struct qe_ring) * 4 + 128) 143 struct qe_ring ring[15]; /* For diag purposes only */ 144 struct qe_ring *rp; 145 int error; 146 147 bzero(sc, sizeof(struct qe_softc)); 148 bzero(ring, PROBESIZE); 149 sc->sc_iot = ua->ua_iot; 150 sc->sc_ioh = ua->ua_ioh; 151 sc->sc_dmat = ua->ua_dmat; 152 153 ubasc->uh_lastiv -= 4; 154 QE_WCSR(QE_CSR_CSR, QE_RESET); 155 QE_WCSR(QE_CSR_VECTOR, ubasc->uh_lastiv); 156 157 /* 158 * Map the ring area. Actually this is done only to be able to 159 * send and receive a internal packet; some junk is loopbacked 160 * so that the DEQNA has a reason to interrupt. 161 */ 162 if ((error = bus_dmamap_create(sc->sc_dmat, PROBESIZE, 1, PROBESIZE, 0, 163 BUS_DMA_NOWAIT, &cmap))) { 164 printf("qematch: bus_dmamap_create failed = %d\n", error); 165 return 0; 166 } 167 if ((error = bus_dmamap_load(sc->sc_dmat, cmap, ring, PROBESIZE, 0, 168 BUS_DMA_NOWAIT))) { 169 printf("qematch: bus_dmamap_load failed = %d\n", error); 170 bus_dmamap_destroy(sc->sc_dmat, cmap); 171 return 0; 172 } 173 174 /* 175 * Init a simple "fake" receive and transmit descriptor that 176 * points to some unused area. Send a fake setup packet. 177 */ 178 rp = (void *)cmap->dm_segs[0].ds_addr; 179 ring[0].qe_flag = ring[0].qe_status1 = QE_NOTYET; 180 ring[0].qe_addr_lo = LOWORD(&rp[4]); 181 ring[0].qe_addr_hi = HIWORD(&rp[4]) | QE_VALID | QE_EOMSG | QE_SETUP; 182 ring[0].qe_buf_len = 128; 183 184 ring[2].qe_flag = ring[2].qe_status1 = QE_NOTYET; 185 ring[2].qe_addr_lo = LOWORD(&rp[4]); 186 ring[2].qe_addr_hi = HIWORD(&rp[4]) | QE_VALID; 187 ring[2].qe_buf_len = 128; 188 189 QE_WCSR(QE_CSR_CSR, QE_RCSR(QE_CSR_CSR) & ~QE_RESET); 190 DELAY(1000); 191 192 /* 193 * Start the interface and wait for the packet. 194 */ 195 QE_WCSR(QE_CSR_CSR, QE_INT_ENABLE|QE_XMIT_INT|QE_RCV_INT); 196 QE_WCSR(QE_CSR_RCLL, LOWORD(&rp[2])); 197 QE_WCSR(QE_CSR_RCLH, HIWORD(&rp[2])); 198 QE_WCSR(QE_CSR_XMTL, LOWORD(rp)); 199 QE_WCSR(QE_CSR_XMTH, HIWORD(rp)); 200 DELAY(10000); 201 202 /* 203 * All done with the bus resources. 204 */ 205 bus_dmamap_unload(sc->sc_dmat, cmap); 206 bus_dmamap_destroy(sc->sc_dmat, cmap); 207 return 1; 208 } 209 210 /* 211 * Interface exists: make available by filling in network interface 212 * record. System will initialize the interface when it is ready 213 * to accept packets. 214 */ 215 void 216 qeattach(parent, self, aux) 217 struct device *parent, *self; 218 void *aux; 219 { 220 struct uba_attach_args *ua = aux; 221 struct uba_softc *ubasc = (struct uba_softc *)parent; 222 struct qe_softc *sc = (struct qe_softc *)self; 223 struct ifnet *ifp = (struct ifnet *)&sc->sc_if; 224 struct qe_ring *rp; 225 u_int8_t enaddr[ETHER_ADDR_LEN]; 226 bus_dma_segment_t seg; 227 int i, rseg, error; 228 229 sc->sc_iot = ua->ua_iot; 230 sc->sc_ioh = ua->ua_ioh; 231 sc->sc_dmat = ua->ua_dmat; 232 233 /* 234 * Allocate DMA safe memory for descriptors and setup memory. 235 */ 236 if ((error = bus_dmamem_alloc(sc->sc_dmat, 237 sizeof(struct qe_cdata), NBPG, 0, &seg, 1, &rseg, 238 BUS_DMA_NOWAIT)) != 0) { 239 printf(": unable to allocate control data, error = %d\n", 240 error); 241 goto fail_0; 242 } 243 244 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 245 sizeof(struct qe_cdata), (caddr_t *)&sc->sc_qedata, 246 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 247 printf(": unable to map control data, error = %d\n", error); 248 goto fail_1; 249 } 250 251 if ((error = bus_dmamap_create(sc->sc_dmat, 252 sizeof(struct qe_cdata), 1, 253 sizeof(struct qe_cdata), 0, BUS_DMA_NOWAIT, 254 &sc->sc_cmap)) != 0) { 255 printf(": unable to create control data DMA map, error = %d\n", 256 error); 257 goto fail_2; 258 } 259 260 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_cmap, 261 sc->sc_qedata, sizeof(struct qe_cdata), NULL, 262 BUS_DMA_NOWAIT)) != 0) { 263 printf(": unable to load control data DMA map, error = %d\n", 264 error); 265 goto fail_3; 266 } 267 268 /* 269 * Zero the newly allocated memory. 270 */ 271 bzero(sc->sc_qedata, sizeof(struct qe_cdata)); 272 /* 273 * Create the transmit descriptor DMA maps. We take advantage 274 * of the fact that the Qbus address space is big, and therefore 275 * allocate map registers for all transmit descriptors also, 276 * so that we can avoid this each time we send a packet. 277 */ 278 for (i = 0; i < TXDESCS; i++) { 279 if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 280 1, MCLBYTES, 0, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW, 281 &sc->sc_xmtmap[i]))) { 282 printf(": unable to create tx DMA map %d, error = %d\n", 283 i, error); 284 goto fail_4; 285 } 286 } 287 288 /* 289 * Create receive buffer DMA maps. 290 */ 291 for (i = 0; i < RXDESCS; i++) { 292 if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, 293 MCLBYTES, 0, BUS_DMA_NOWAIT, 294 &sc->sc_rcvmap[i]))) { 295 printf(": unable to create rx DMA map %d, error = %d\n", 296 i, error); 297 goto fail_5; 298 } 299 } 300 /* 301 * Pre-allocate the receive buffers. 302 */ 303 for (i = 0; i < RXDESCS; i++) { 304 if ((error = qe_add_rxbuf(sc, i)) != 0) { 305 printf(": unable to allocate or map rx buffer %d\n," 306 " error = %d\n", i, error); 307 goto fail_6; 308 } 309 } 310 311 /* 312 * Create ring loops of the buffer chains. 313 * This is only done once. 314 */ 315 sc->sc_pqedata = (struct qe_cdata *)sc->sc_cmap->dm_segs[0].ds_addr; 316 317 rp = sc->sc_qedata->qc_recv; 318 rp[RXDESCS].qe_addr_lo = LOWORD(&sc->sc_pqedata->qc_recv[0]); 319 rp[RXDESCS].qe_addr_hi = HIWORD(&sc->sc_pqedata->qc_recv[0]) | 320 QE_VALID | QE_CHAIN; 321 rp[RXDESCS].qe_flag = rp[RXDESCS].qe_status1 = QE_NOTYET; 322 323 rp = sc->sc_qedata->qc_xmit; 324 rp[TXDESCS].qe_addr_lo = LOWORD(&sc->sc_pqedata->qc_xmit[0]); 325 rp[TXDESCS].qe_addr_hi = HIWORD(&sc->sc_pqedata->qc_xmit[0]) | 326 QE_VALID | QE_CHAIN; 327 rp[TXDESCS].qe_flag = rp[TXDESCS].qe_status1 = QE_NOTYET; 328 329 /* 330 * Get the vector that were set at match time, and remember it. 331 */ 332 sc->sc_intvec = ubasc->uh_lastiv; 333 QE_WCSR(QE_CSR_CSR, QE_RESET); 334 DELAY(1000); 335 QE_WCSR(QE_CSR_CSR, QE_RCSR(QE_CSR_CSR) & ~QE_RESET); 336 337 /* 338 * Read out ethernet address and tell which type this card is. 339 */ 340 for (i = 0; i < 6; i++) 341 enaddr[i] = QE_RCSR(i * 2) & 0xff; 342 343 QE_WCSR(QE_CSR_VECTOR, sc->sc_intvec | 1); 344 printf("\n%s: %s, hardware address %s\n", sc->sc_dev.dv_xname, 345 QE_RCSR(QE_CSR_VECTOR) & 1 ? "delqa":"deqna", 346 ether_sprintf(enaddr)); 347 348 QE_WCSR(QE_CSR_VECTOR, QE_RCSR(QE_CSR_VECTOR) & ~1); /* ??? */ 349 350 uba_intr_establish(ua->ua_icookie, ua->ua_cvec, qeintr, sc); 351 352 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 353 ifp->if_softc = sc; 354 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 355 ifp->if_start = qestart; 356 ifp->if_ioctl = qeioctl; 357 ifp->if_watchdog = qetimeout; 358 359 /* 360 * Attach the interface. 361 */ 362 if_attach(ifp); 363 ether_ifattach(ifp, enaddr); 364 365 #if NBPFILTER > 0 366 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); 367 #endif 368 return; 369 370 /* 371 * Free any resources we've allocated during the failed attach 372 * attempt. Do this in reverse order and fall through. 373 */ 374 fail_6: 375 for (i = 0; i < RXDESCS; i++) { 376 if (sc->sc_rxmbuf[i] != NULL) { 377 bus_dmamap_unload(sc->sc_dmat, sc->sc_xmtmap[i]); 378 m_freem(sc->sc_rxmbuf[i]); 379 } 380 } 381 fail_5: 382 for (i = 0; i < RXDESCS; i++) { 383 if (sc->sc_xmtmap[i] != NULL) 384 bus_dmamap_destroy(sc->sc_dmat, sc->sc_xmtmap[i]); 385 } 386 fail_4: 387 for (i = 0; i < TXDESCS; i++) { 388 if (sc->sc_rcvmap[i] != NULL) 389 bus_dmamap_destroy(sc->sc_dmat, sc->sc_rcvmap[i]); 390 } 391 bus_dmamap_unload(sc->sc_dmat, sc->sc_cmap); 392 fail_3: 393 bus_dmamap_destroy(sc->sc_dmat, sc->sc_cmap); 394 fail_2: 395 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->sc_qedata, 396 sizeof(struct qe_cdata)); 397 fail_1: 398 bus_dmamem_free(sc->sc_dmat, &seg, rseg); 399 fail_0: 400 return; 401 } 402 403 /* 404 * Initialization of interface. 405 */ 406 void 407 qeinit(sc) 408 struct qe_softc *sc; 409 { 410 struct ifnet *ifp = (struct ifnet *)&sc->sc_if; 411 struct qe_cdata *qc = sc->sc_qedata; 412 int i; 413 414 415 /* 416 * Reset the interface. 417 */ 418 QE_WCSR(QE_CSR_CSR, QE_RESET); 419 DELAY(1000); 420 QE_WCSR(QE_CSR_CSR, QE_RCSR(QE_CSR_CSR) & ~QE_RESET); 421 QE_WCSR(QE_CSR_VECTOR, sc->sc_intvec); 422 423 sc->sc_nexttx = sc->sc_inq = sc->sc_lastack = 0; 424 /* 425 * Release and init transmit descriptors. 426 */ 427 for (i = 0; i < TXDESCS; i++) { 428 if (sc->sc_txmbuf[i]) { 429 bus_dmamap_unload(sc->sc_dmat, sc->sc_xmtmap[i]); 430 m_freem(sc->sc_txmbuf[i]); 431 sc->sc_txmbuf[i] = 0; 432 } 433 qc->qc_xmit[i].qe_addr_hi = 0; /* Clear valid bit */ 434 qc->qc_xmit[i].qe_status1 = qc->qc_xmit[i].qe_flag = QE_NOTYET; 435 } 436 437 438 /* 439 * Init receive descriptors. 440 */ 441 for (i = 0; i < RXDESCS; i++) 442 qc->qc_recv[i].qe_status1 = qc->qc_recv[i].qe_flag = QE_NOTYET; 443 sc->sc_nextrx = 0; 444 445 /* 446 * Write the descriptor addresses to the device. 447 * Receiving packets will be enabled in the interrupt routine. 448 */ 449 QE_WCSR(QE_CSR_CSR, QE_INT_ENABLE|QE_XMIT_INT|QE_RCV_INT); 450 QE_WCSR(QE_CSR_RCLL, LOWORD(sc->sc_pqedata->qc_recv)); 451 QE_WCSR(QE_CSR_RCLH, HIWORD(sc->sc_pqedata->qc_recv)); 452 453 ifp->if_flags |= IFF_RUNNING; 454 ifp->if_flags &= ~IFF_OACTIVE; 455 456 /* 457 * Send a setup frame. 458 * This will start the transmit machinery as well. 459 */ 460 qe_setup(sc); 461 462 } 463 464 /* 465 * Start output on interface. 466 */ 467 void 468 qestart(ifp) 469 struct ifnet *ifp; 470 { 471 struct qe_softc *sc = ifp->if_softc; 472 struct qe_cdata *qc = sc->sc_qedata; 473 paddr_t buffer; 474 struct mbuf *m, *m0; 475 int idx, len, s, i, totlen, error; 476 short orword; 477 478 if ((QE_RCSR(QE_CSR_CSR) & QE_RCV_ENABLE) == 0) 479 return; 480 481 s = splimp(); 482 while (sc->sc_inq < (TXDESCS - 1)) { 483 484 if (sc->sc_setup) { 485 qe_setup(sc); 486 continue; 487 } 488 idx = sc->sc_nexttx; 489 IF_DEQUEUE(&sc->sc_if.if_snd, m); 490 if (m == 0) 491 goto out; 492 /* 493 * Count number of mbufs in chain. 494 * Always do DMA directly from mbufs, therefore the transmit 495 * ring is really big. 496 */ 497 for (m0 = m, i = 0; m0; m0 = m0->m_next) 498 if (m0->m_len) 499 i++; 500 if (i >= TXDESCS) 501 panic("qestart"); 502 503 if ((i + sc->sc_inq) >= (TXDESCS - 1)) { 504 IF_PREPEND(&sc->sc_if.if_snd, m); 505 ifp->if_flags |= IFF_OACTIVE; 506 goto out; 507 } 508 509 #if NBPFILTER > 0 510 if (ifp->if_bpf) 511 bpf_mtap(ifp->if_bpf, m); 512 #endif 513 /* 514 * m now points to a mbuf chain that can be loaded. 515 * Loop around and set it. 516 */ 517 totlen = 0; 518 for (m0 = m; m0; m0 = m0->m_next) { 519 error = bus_dmamap_load(sc->sc_dmat, sc->sc_xmtmap[idx], 520 mtod(m0, void *), m0->m_len, 0, 0); 521 buffer = sc->sc_xmtmap[idx]->dm_segs[0].ds_addr; 522 len = m0->m_len; 523 if (len == 0) 524 continue; 525 526 totlen += len; 527 /* Word alignment calc */ 528 orword = 0; 529 if (totlen == m->m_pkthdr.len) { 530 if (totlen < ETHER_MIN_LEN) 531 len += (ETHER_MIN_LEN - totlen); 532 orword |= QE_EOMSG; 533 sc->sc_txmbuf[idx] = m; 534 } 535 if ((buffer & 1) || (len & 1)) 536 len += 2; 537 if (buffer & 1) 538 orword |= QE_ODDBEGIN; 539 if ((buffer + len) & 1) 540 orword |= QE_ODDEND; 541 qc->qc_xmit[idx].qe_buf_len = -(len/2); 542 qc->qc_xmit[idx].qe_addr_lo = LOWORD(buffer); 543 qc->qc_xmit[idx].qe_addr_hi = HIWORD(buffer); 544 qc->qc_xmit[idx].qe_flag = 545 qc->qc_xmit[idx].qe_status1 = QE_NOTYET; 546 qc->qc_xmit[idx].qe_addr_hi |= (QE_VALID | orword); 547 if (++idx == TXDESCS) 548 idx = 0; 549 sc->sc_inq++; 550 } 551 #ifdef DIAGNOSTIC 552 if (totlen != m->m_pkthdr.len) 553 panic("qestart: len fault"); 554 #endif 555 556 /* 557 * Kick off the transmit logic, if it is stopped. 558 */ 559 if (QE_RCSR(QE_CSR_CSR) & QE_XL_INVALID) { 560 QE_WCSR(QE_CSR_XMTL, 561 LOWORD(&sc->sc_pqedata->qc_xmit[sc->sc_nexttx])); 562 QE_WCSR(QE_CSR_XMTH, 563 HIWORD(&sc->sc_pqedata->qc_xmit[sc->sc_nexttx])); 564 } 565 sc->sc_nexttx = idx; 566 } 567 if (sc->sc_inq == (TXDESCS - 1)) 568 ifp->if_flags |= IFF_OACTIVE; 569 570 out: if (sc->sc_inq) 571 ifp->if_timer = 5; /* If transmit logic dies */ 572 splx(s); 573 } 574 575 static void 576 qeintr(arg) 577 void *arg; 578 { 579 struct qe_softc *sc = arg; 580 struct qe_cdata *qc = sc->sc_qedata; 581 struct ifnet *ifp = &sc->sc_if; 582 struct ether_header *eh; 583 struct mbuf *m; 584 int csr, status1, status2, len; 585 586 csr = QE_RCSR(QE_CSR_CSR); 587 588 QE_WCSR(QE_CSR_CSR, QE_RCV_ENABLE | QE_INT_ENABLE | QE_XMIT_INT | 589 QE_RCV_INT | QE_ILOOP); 590 591 if (csr & QE_RCV_INT) 592 while (qc->qc_recv[sc->sc_nextrx].qe_status1 != QE_NOTYET) { 593 status1 = qc->qc_recv[sc->sc_nextrx].qe_status1; 594 status2 = qc->qc_recv[sc->sc_nextrx].qe_status2; 595 m = sc->sc_rxmbuf[sc->sc_nextrx]; 596 len = ((status1 & QE_RBL_HI) | 597 (status2 & QE_RBL_LO)) + 60; 598 qe_add_rxbuf(sc, sc->sc_nextrx); 599 m->m_pkthdr.rcvif = ifp; 600 m->m_pkthdr.len = m->m_len = len; 601 if (++sc->sc_nextrx == RXDESCS) 602 sc->sc_nextrx = 0; 603 eh = mtod(m, struct ether_header *); 604 #if NBPFILTER > 0 605 if (ifp->if_bpf) { 606 bpf_mtap(ifp->if_bpf, m); 607 if ((ifp->if_flags & IFF_PROMISC) != 0 && 608 bcmp(LLADDR(ifp->if_sadl), eh->ether_dhost, 609 ETHER_ADDR_LEN) != 0 && 610 ((eh->ether_dhost[0] & 1) == 0)) { 611 m_freem(m); 612 continue; 613 } 614 } 615 #endif 616 /* 617 * ALLMULTI means PROMISC in this driver. 618 */ 619 if ((ifp->if_flags & IFF_ALLMULTI) && 620 ((eh->ether_dhost[0] & 1) == 0) && 621 bcmp(LLADDR(ifp->if_sadl), eh->ether_dhost, 622 ETHER_ADDR_LEN)) { 623 m_freem(m); 624 continue; 625 } 626 (*ifp->if_input)(ifp, m); 627 } 628 629 if (csr & QE_XMIT_INT) { 630 while (qc->qc_xmit[sc->sc_lastack].qe_status1 != QE_NOTYET) { 631 int idx = sc->sc_lastack; 632 633 sc->sc_inq--; 634 if (++sc->sc_lastack == TXDESCS) 635 sc->sc_lastack = 0; 636 637 /* XXX collect statistics */ 638 qc->qc_xmit[idx].qe_addr_hi &= ~QE_VALID; 639 qc->qc_xmit[idx].qe_status1 = 640 qc->qc_xmit[idx].qe_flag = QE_NOTYET; 641 642 if (qc->qc_xmit[idx].qe_addr_hi & QE_SETUP) 643 continue; 644 bus_dmamap_unload(sc->sc_dmat, sc->sc_xmtmap[idx]); 645 if (sc->sc_txmbuf[idx]) { 646 m_freem(sc->sc_txmbuf[idx]); 647 sc->sc_txmbuf[idx] = 0; 648 } 649 } 650 ifp->if_timer = 0; 651 ifp->if_flags &= ~IFF_OACTIVE; 652 qestart(ifp); /* Put in more in queue */ 653 } 654 /* 655 * How can the receive list get invalid??? 656 * Verified that it happens anyway. 657 */ 658 if ((qc->qc_recv[sc->sc_nextrx].qe_status1 == QE_NOTYET) && 659 (QE_RCSR(QE_CSR_CSR) & QE_RL_INVALID)) { 660 QE_WCSR(QE_CSR_RCLL, 661 LOWORD(&sc->sc_pqedata->qc_recv[sc->sc_nextrx])); 662 QE_WCSR(QE_CSR_RCLH, 663 HIWORD(&sc->sc_pqedata->qc_recv[sc->sc_nextrx])); 664 } 665 } 666 667 /* 668 * Process an ioctl request. 669 */ 670 int 671 qeioctl(ifp, cmd, data) 672 register struct ifnet *ifp; 673 u_long cmd; 674 caddr_t data; 675 { 676 struct qe_softc *sc = ifp->if_softc; 677 struct ifreq *ifr = (struct ifreq *)data; 678 struct ifaddr *ifa = (struct ifaddr *)data; 679 int s = splnet(), error = 0; 680 681 switch (cmd) { 682 683 case SIOCSIFADDR: 684 ifp->if_flags |= IFF_UP; 685 switch(ifa->ifa_addr->sa_family) { 686 #ifdef INET 687 case AF_INET: 688 qeinit(sc); 689 arp_ifinit(ifp, ifa); 690 break; 691 #endif 692 } 693 break; 694 695 case SIOCSIFFLAGS: 696 if ((ifp->if_flags & IFF_UP) == 0 && 697 (ifp->if_flags & IFF_RUNNING) != 0) { 698 /* 699 * If interface is marked down and it is running, 700 * stop it. (by disabling receive mechanism). 701 */ 702 QE_WCSR(QE_CSR_CSR, 703 QE_RCSR(QE_CSR_CSR) & ~QE_RCV_ENABLE); 704 ifp->if_flags &= ~IFF_RUNNING; 705 } else if ((ifp->if_flags & IFF_UP) != 0 && 706 (ifp->if_flags & IFF_RUNNING) == 0) { 707 /* 708 * If interface it marked up and it is stopped, then 709 * start it. 710 */ 711 qeinit(sc); 712 } else if ((ifp->if_flags & IFF_UP) != 0) { 713 /* 714 * Send a new setup packet to match any new changes. 715 * (Like IFF_PROMISC etc) 716 */ 717 qe_setup(sc); 718 } 719 break; 720 721 case SIOCADDMULTI: 722 case SIOCDELMULTI: 723 /* 724 * Update our multicast list. 725 */ 726 error = (cmd == SIOCADDMULTI) ? 727 ether_addmulti(ifr, &sc->sc_ec): 728 ether_delmulti(ifr, &sc->sc_ec); 729 730 if (error == ENETRESET) { 731 /* 732 * Multicast list has changed; set the hardware filter 733 * accordingly. 734 */ 735 qe_setup(sc); 736 error = 0; 737 } 738 break; 739 740 default: 741 error = EINVAL; 742 743 } 744 splx(s); 745 return (error); 746 } 747 748 /* 749 * Add a receive buffer to the indicated descriptor. 750 */ 751 int 752 qe_add_rxbuf(sc, i) 753 struct qe_softc *sc; 754 int i; 755 { 756 struct mbuf *m; 757 struct qe_ring *rp; 758 vaddr_t addr; 759 int error; 760 761 MGETHDR(m, M_DONTWAIT, MT_DATA); 762 if (m == NULL) 763 return (ENOBUFS); 764 765 MCLGET(m, M_DONTWAIT); 766 if ((m->m_flags & M_EXT) == 0) { 767 m_freem(m); 768 return (ENOBUFS); 769 } 770 771 if (sc->sc_rxmbuf[i] != NULL) 772 bus_dmamap_unload(sc->sc_dmat, sc->sc_rcvmap[i]); 773 774 error = bus_dmamap_load(sc->sc_dmat, sc->sc_rcvmap[i], 775 m->m_ext.ext_buf, m->m_ext.ext_size, NULL, BUS_DMA_NOWAIT); 776 if (error) 777 panic("%s: can't load rx DMA map %d, error = %d\n", 778 sc->sc_dev.dv_xname, i, error); 779 sc->sc_rxmbuf[i] = m; 780 781 bus_dmamap_sync(sc->sc_dmat, sc->sc_rcvmap[i], 0, 782 sc->sc_rcvmap[i]->dm_mapsize, BUS_DMASYNC_PREREAD); 783 784 /* 785 * We know that the mbuf cluster is page aligned. Also, be sure 786 * that the IP header will be longword aligned. 787 */ 788 m->m_data += 2; 789 addr = sc->sc_rcvmap[i]->dm_segs[0].ds_addr + 2; 790 rp = &sc->sc_qedata->qc_recv[i]; 791 rp->qe_flag = rp->qe_status1 = QE_NOTYET; 792 rp->qe_addr_lo = LOWORD(addr); 793 rp->qe_addr_hi = HIWORD(addr) | QE_VALID; 794 rp->qe_buf_len = -(m->m_ext.ext_size - 2)/2; 795 796 return (0); 797 } 798 799 /* 800 * Create a setup packet and put in queue for sending. 801 */ 802 void 803 qe_setup(sc) 804 struct qe_softc *sc; 805 { 806 struct ether_multi *enm; 807 struct ether_multistep step; 808 struct qe_cdata *qc = sc->sc_qedata; 809 struct ifnet *ifp = &sc->sc_if; 810 u_int8_t *enaddr = LLADDR(ifp->if_sadl); 811 int i, j, k, idx, s; 812 813 s = splimp(); 814 if (sc->sc_inq == (TXDESCS - 1)) { 815 sc->sc_setup = 1; 816 splx(s); 817 return; 818 } 819 sc->sc_setup = 0; 820 /* 821 * Init the setup packet with valid info. 822 */ 823 memset(qc->qc_setup, 0xff, sizeof(qc->qc_setup)); /* Broadcast */ 824 for (i = 0; i < ETHER_ADDR_LEN; i++) 825 qc->qc_setup[i * 8 + 1] = enaddr[i]; /* Own address */ 826 827 /* 828 * Multicast handling. The DEQNA can handle up to 12 direct 829 * ethernet addresses. 830 */ 831 j = 3; k = 0; 832 ifp->if_flags &= ~IFF_ALLMULTI; 833 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 834 while (enm != NULL) { 835 if (bcmp(enm->enm_addrlo, enm->enm_addrhi, 6)) { 836 ifp->if_flags |= IFF_ALLMULTI; 837 break; 838 } 839 for (i = 0; i < ETHER_ADDR_LEN; i++) 840 qc->qc_setup[i * 8 + j + k] = enm->enm_addrlo[i]; 841 j++; 842 if (j == 8) { 843 j = 1; k += 64; 844 } 845 if (k > 64) { 846 ifp->if_flags |= IFF_ALLMULTI; 847 break; 848 } 849 ETHER_NEXT_MULTI(step, enm); 850 } 851 idx = sc->sc_nexttx; 852 qc->qc_xmit[idx].qe_buf_len = -64; 853 854 /* 855 * How is the DEQNA turned in ALLMULTI mode??? 856 * Until someone tells me, fall back to PROMISC when more than 857 * 12 ethernet addresses. 858 */ 859 if (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI)) 860 qc->qc_xmit[idx].qe_buf_len = -65; 861 862 qc->qc_xmit[idx].qe_addr_lo = LOWORD(sc->sc_pqedata->qc_setup); 863 qc->qc_xmit[idx].qe_addr_hi = 864 HIWORD(sc->sc_pqedata->qc_setup) | QE_SETUP | QE_EOMSG; 865 qc->qc_xmit[idx].qe_status1 = qc->qc_xmit[idx].qe_flag = QE_NOTYET; 866 qc->qc_xmit[idx].qe_addr_hi |= QE_VALID; 867 868 if (QE_RCSR(QE_CSR_CSR) & QE_XL_INVALID) { 869 QE_WCSR(QE_CSR_XMTL, 870 LOWORD(&sc->sc_pqedata->qc_xmit[idx])); 871 QE_WCSR(QE_CSR_XMTH, 872 HIWORD(&sc->sc_pqedata->qc_xmit[idx])); 873 } 874 875 sc->sc_inq++; 876 if (++sc->sc_nexttx == TXDESCS) 877 sc->sc_nexttx = 0; 878 splx(s); 879 } 880 881 /* 882 * Check for dead transmit logic. Not uncommon. 883 */ 884 void 885 qetimeout(ifp) 886 struct ifnet *ifp; 887 { 888 struct qe_softc *sc = ifp->if_softc; 889 890 if (sc->sc_inq == 0) 891 return; 892 893 printf("%s: xmit logic died, resetting...\n", sc->sc_dev.dv_xname); 894 /* 895 * Do a reset of interface, to get it going again. 896 * Will it work by just restart the transmit logic? 897 */ 898 qeinit(sc); 899 } 900
Indexes created Tue Sep 30 11:09:46 GMT 2025