if_ni.c revision 1.33.16.1
1 /* $NetBSD: if_ni.c,v 1.33.16.1 2008/04/03 12:42:38 mjf Exp $ */ 2 /* 3 * Copyright (c) 2000 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 DEBNA/DEBNT/DEBNK ethernet cards. 34 * Things that is still to do: 35 * Collect statistics. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: if_ni.c,v 1.33.16.1 2008/04/03 12:42:38 mjf Exp $"); 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 #include <sys/sched.h> 51 52 #include <uvm/uvm_extern.h> 53 54 #include <net/if.h> 55 #include <net/if_ether.h> 56 #include <net/if_dl.h> 57 58 #include <netinet/in.h> 59 #include <netinet/if_inarp.h> 60 61 #if NBPFILTER > 0 62 #include <net/bpf.h> 63 #include <net/bpfdesc.h> 64 #endif 65 66 #include <sys/bus.h> 67 #ifdef __vax__ 68 #include <machine/mtpr.h> 69 #include <machine/pte.h> 70 #endif 71 72 #include <dev/bi/bireg.h> 73 #include <dev/bi/bivar.h> 74 75 #include "ioconf.h" 76 #include "locators.h" 77 78 /* 79 * Tunable buffer parameters. Good idea to have them as power of 8; then 80 * they will fit into a logical VAX page. 81 */ 82 #define NMSGBUF 8 /* Message queue entries */ 83 #define NTXBUF 16 /* Transmit queue entries */ 84 #define NTXFRAGS 8 /* Number of transmit buffer fragments */ 85 #define NRXBUF 24 /* Receive queue entries */ 86 #define NBDESCS (NTXBUF * NTXFRAGS + NRXBUF) 87 #define NQUEUES 3 /* RX + TX + MSG */ 88 #define PKTHDR 18 /* Length of (control) packet header */ 89 #define RXADD 18 /* Additional length of receive datagram */ 90 #define TXADD (10+NTXFRAGS*8) /* "" transmit "" */ 91 #define MSGADD 134 /* "" message "" */ 92 93 #include <dev/bi/if_nireg.h> /* XXX include earlier */ 94 95 /* 96 * Macros for (most cases of) insqti/remqhi. 97 * Retry NRETRIES times to do the operation, if it still fails assume 98 * a lost lock and panic. 99 */ 100 #define NRETRIES 100 101 #define INSQTI(e, h) ({ \ 102 int ret = 0, __i; \ 103 for (__i = 0; __i < NRETRIES; __i++) { \ 104 if ((ret = insqti(e, h)) != ILCK_FAILED) \ 105 break; \ 106 } \ 107 if (__i == NRETRIES) \ 108 panic("ni: insqti failed at %d", __LINE__); \ 109 ret; \ 110 }) 111 #define REMQHI(h) ({ \ 112 int __i; void *ret = NULL; \ 113 for (__i = 0; __i < NRETRIES; __i++) { \ 114 if ((ret = remqhi(h)) != (void *)ILCK_FAILED) \ 115 break; \ 116 } \ 117 if (__i == NRETRIES) \ 118 panic("ni: remqhi failed at %d", __LINE__); \ 119 ret; \ 120 }) 121 122 123 #define nipqb (&sc->sc_gvppqb->nc_pqb) 124 #define gvp sc->sc_gvppqb 125 #define fqb sc->sc_fqb 126 #define bbd sc->sc_bbd 127 128 struct ni_softc { 129 struct device sc_dev; /* Configuration common part */ 130 struct evcnt sc_intrcnt; /* Interrupt coounting */ 131 struct ethercom sc_ec; /* Ethernet common part */ 132 #define sc_if sc_ec.ec_if /* network-visible interface */ 133 bus_space_tag_t sc_iot; 134 bus_addr_t sc_ioh; 135 bus_dma_tag_t sc_dmat; 136 struct ni_gvppqb *sc_gvppqb; /* Port queue block */ 137 struct ni_gvppqb *sc_pgvppqb; /* Phys address of PQB */ 138 struct ni_fqb *sc_fqb; /* Free Queue block */ 139 struct ni_bbd *sc_bbd; /* Buffer descriptors */ 140 u_int8_t sc_enaddr[ETHER_ADDR_LEN]; 141 }; 142 143 static int nimatch(device_t, cfdata_t, void *); 144 static void niattach(device_t, device_t, void *); 145 static void niinit(struct ni_softc *); 146 static void nistart(struct ifnet *); 147 static void niintr(void *); 148 static int niioctl(struct ifnet *, u_long, void *); 149 static int ni_add_rxbuf(struct ni_softc *, struct ni_dg *, int); 150 static void ni_setup(struct ni_softc *); 151 static void nitimeout(struct ifnet *); 152 static void ni_shutdown(void *); 153 static void ni_getpgs(struct ni_softc *sc, int size, void **v, paddr_t *p); 154 static int failtest(struct ni_softc *, int, int, int, const char *); 155 156 volatile int endwait, retry; /* Used during autoconfig */ 157 158 CFATTACH_DECL(ni, sizeof(struct ni_softc), 159 nimatch, niattach, NULL, NULL); 160 161 #define NI_WREG(csr, val) \ 162 bus_space_write_4(sc->sc_iot, sc->sc_ioh, csr, val) 163 #define NI_RREG(csr) \ 164 bus_space_read_4(sc->sc_iot, sc->sc_ioh, csr) 165 166 #define WAITREG(csr,val) while (NI_RREG(csr) & val); 167 /* 168 * Check for present device. 169 */ 170 int 171 nimatch(parent, cf, aux) 172 struct device *parent; 173 struct cfdata *cf; 174 void *aux; 175 { 176 struct bi_attach_args *ba = aux; 177 u_short type; 178 179 type = bus_space_read_2(ba->ba_iot, ba->ba_ioh, BIREG_DTYPE); 180 if (type != BIDT_DEBNA && type != BIDT_DEBNT && type != BIDT_DEBNK) 181 return 0; 182 183 if (cf->cf_loc[BICF_NODE] != BICF_NODE_DEFAULT && 184 cf->cf_loc[BICF_NODE] != ba->ba_nodenr) 185 return 0; 186 187 return 1; 188 } 189 190 /* 191 * Allocate a bunch of descriptor-safe memory. 192 * We need to get the structures from the beginning of its own pages. 193 */ 194 static void 195 ni_getpgs(struct ni_softc *sc, int size, void **v, paddr_t *p) 196 { 197 bus_dma_segment_t seg; 198 int nsegs, error; 199 200 if ((error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1, 201 &nsegs, BUS_DMA_NOWAIT)) != 0) 202 panic(" unable to allocate memory: error %d", error); 203 204 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, nsegs, size, v, 205 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) 206 panic(" unable to map memory: error %d", error); 207 208 if (p) 209 *p = seg.ds_addr; 210 memset(*v, 0, size); 211 } 212 213 static int 214 failtest(struct ni_softc *sc, int reg, int mask, int test, const char *str) 215 { 216 int i = 100; 217 218 do { 219 DELAY(100000); 220 } while (((NI_RREG(reg) & mask) != test) && --i); 221 222 if (i == 0) { 223 printf("%s: %s\n", sc->sc_dev.dv_xname, str); 224 return 1; 225 } 226 return 0; 227 } 228 229 230 /* 231 * Interface exists: make available by filling in network interface 232 * record. System will initialize the interface when it is ready 233 * to accept packets. 234 */ 235 void 236 niattach(parent, self, aux) 237 struct device *parent, *self; 238 void *aux; 239 { 240 struct bi_attach_args *ba = aux; 241 struct ni_softc *sc = (struct ni_softc *)self; 242 struct ifnet *ifp = (struct ifnet *)&sc->sc_if; 243 struct ni_msg *msg; 244 struct ni_ptdb *ptdb; 245 void *va; 246 int i, j, s, res; 247 u_short type; 248 249 type = bus_space_read_2(ba->ba_iot, ba->ba_ioh, BIREG_DTYPE); 250 printf(": DEBN%c\n", type == BIDT_DEBNA ? 'A' : type == BIDT_DEBNT ? 251 'T' : 'K'); 252 sc->sc_iot = ba->ba_iot; 253 sc->sc_ioh = ba->ba_ioh; 254 sc->sc_dmat = ba->ba_dmat; 255 256 bi_intr_establish(ba->ba_icookie, ba->ba_ivec, 257 niintr, sc, &sc->sc_intrcnt); 258 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 259 sc->sc_dev.dv_xname, "intr"); 260 261 ni_getpgs(sc, sizeof(struct ni_gvppqb), (void **)&sc->sc_gvppqb, 262 (paddr_t *)&sc->sc_pgvppqb); 263 ni_getpgs(sc, sizeof(struct ni_fqb), (void **)&sc->sc_fqb, 0); 264 ni_getpgs(sc, NBDESCS * sizeof(struct ni_bbd), 265 (void **)&sc->sc_bbd, 0); 266 /* 267 * Zero the newly allocated memory. 268 */ 269 270 nipqb->np_veclvl = (ba->ba_ivec << 2) + 2; 271 nipqb->np_node = ba->ba_intcpu; 272 nipqb->np_vpqb = (u_int32_t)gvp; 273 #ifdef __vax__ 274 nipqb->np_spt = nipqb->np_gpt = mfpr(PR_SBR); 275 nipqb->np_sptlen = nipqb->np_gptlen = mfpr(PR_SLR); 276 #else 277 #error Must fix support for non-vax. 278 #endif 279 nipqb->np_bvplvl = 1; 280 nipqb->np_vfqb = (u_int32_t)fqb; 281 nipqb->np_vbdt = (u_int32_t)bbd; 282 nipqb->np_nbdr = NBDESCS; 283 284 /* Free queue block */ 285 nipqb->np_freeq = NQUEUES; 286 fqb->nf_mlen = PKTHDR+MSGADD; 287 fqb->nf_dlen = PKTHDR+TXADD; 288 fqb->nf_rlen = PKTHDR+RXADD; 289 290 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 291 ifp->if_softc = sc; 292 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 293 ifp->if_start = nistart; 294 ifp->if_ioctl = niioctl; 295 ifp->if_watchdog = nitimeout; 296 IFQ_SET_READY(&ifp->if_snd); 297 298 /* 299 * Start init sequence. 300 */ 301 302 /* Reset the node */ 303 NI_WREG(BIREG_VAXBICSR, NI_RREG(BIREG_VAXBICSR) | BICSR_NRST); 304 DELAY(500000); 305 i = 20; 306 while ((NI_RREG(BIREG_VAXBICSR) & BICSR_BROKE) && --i) 307 DELAY(500000); 308 if (i == 0) { 309 printf("%s: BROKE bit set after reset\n", sc->sc_dev.dv_xname); 310 return; 311 } 312 313 /* Check state */ 314 if (failtest(sc, NI_PSR, PSR_STATE, PSR_UNDEF, "not undefined state")) 315 return; 316 317 /* Clear owner bits */ 318 NI_WREG(NI_PSR, NI_RREG(NI_PSR) & ~PSR_OWN); 319 NI_WREG(NI_PCR, NI_RREG(NI_PCR) & ~PCR_OWN); 320 321 /* kick off init */ 322 NI_WREG(NI_PCR, (u_int32_t)sc->sc_pgvppqb | PCR_INIT | PCR_OWN); 323 while (NI_RREG(NI_PCR) & PCR_OWN) 324 DELAY(100000); 325 326 /* Check state */ 327 if (failtest(sc, NI_PSR, PSR_INITED, PSR_INITED, "failed initialize")) 328 return; 329 330 NI_WREG(NI_PSR, NI_RREG(NI_PSR) & ~PSR_OWN); 331 332 WAITREG(NI_PCR, PCR_OWN); 333 NI_WREG(NI_PCR, PCR_OWN|PCR_ENABLE); 334 WAITREG(NI_PCR, PCR_OWN); 335 WAITREG(NI_PSR, PSR_OWN); 336 337 /* Check state */ 338 if (failtest(sc, NI_PSR, PSR_STATE, PSR_ENABLED, "failed enable")) 339 return; 340 341 NI_WREG(NI_PSR, NI_RREG(NI_PSR) & ~PSR_OWN); 342 343 /* 344 * The message queue packets must be located on the beginning 345 * of a page. A VAX page is 512 bytes, but it clusters 8 pages. 346 * This knowledge is used here when allocating pages. 347 * !!! How should this be done on MIPS and Alpha??? !!! 348 */ 349 #if NBPG < 4096 350 #error pagesize too small 351 #endif 352 s = splvm(); 353 /* Set up message free queue */ 354 ni_getpgs(sc, NMSGBUF * 512, &va, 0); 355 for (i = 0; i < NMSGBUF; i++) { 356 msg = (void *)((char *)va + i * 512); 357 res = INSQTI(msg, &fqb->nf_mforw); 358 } 359 WAITREG(NI_PCR, PCR_OWN); 360 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_MFREEQ|PCR_OWN); 361 WAITREG(NI_PCR, PCR_OWN); 362 363 /* Set up xmit queue */ 364 ni_getpgs(sc, NTXBUF * 512, &va, 0); 365 for (i = 0; i < NTXBUF; i++) { 366 struct ni_dg *data; 367 368 data = (void *)((char *)va + i * 512); 369 data->nd_status = 0; 370 data->nd_len = TXADD; 371 data->nd_ptdbidx = 1; 372 data->nd_opcode = BVP_DGRAM; 373 for (j = 0; j < NTXFRAGS; j++) { 374 data->bufs[j]._offset = 0; 375 data->bufs[j]._key = 1; 376 bbd[i * NTXFRAGS + j].nb_key = 1; 377 bbd[i * NTXFRAGS + j].nb_status = 0; 378 data->bufs[j]._index = i * NTXFRAGS + j; 379 } 380 res = INSQTI(data, &fqb->nf_dforw); 381 } 382 WAITREG(NI_PCR, PCR_OWN); 383 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_DFREEQ|PCR_OWN); 384 WAITREG(NI_PCR, PCR_OWN); 385 386 /* recv buffers */ 387 ni_getpgs(sc, NRXBUF * 512, &va, 0); 388 for (i = 0; i < NRXBUF; i++) { 389 struct ni_dg *data; 390 int idx; 391 392 data = (void *)((char *)va + i * 512); 393 data->nd_len = RXADD; 394 data->nd_opcode = BVP_DGRAMRX; 395 data->nd_ptdbidx = 2; 396 data->bufs[0]._key = 1; 397 398 idx = NTXBUF * NTXFRAGS + i; 399 if (ni_add_rxbuf(sc, data, idx)) 400 panic("niattach: ni_add_rxbuf: out of mbufs"); 401 402 res = INSQTI(data, &fqb->nf_rforw); 403 } 404 WAITREG(NI_PCR, PCR_OWN); 405 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_RFREEQ|PCR_OWN); 406 WAITREG(NI_PCR, PCR_OWN); 407 408 splx(s); 409 410 /* Set initial parameters */ 411 msg = REMQHI(&fqb->nf_mforw); 412 413 msg->nm_opcode = BVP_MSG; 414 msg->nm_status = 0; 415 msg->nm_len = sizeof(struct ni_param) + 6; 416 msg->nm_opcode2 = NI_WPARAM; 417 ((struct ni_param *)&msg->nm_text[0])->np_flags = NP_PAD; 418 419 endwait = retry = 0; 420 res = INSQTI(msg, &gvp->nc_forw0); 421 422 retry: WAITREG(NI_PCR, PCR_OWN); 423 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 424 WAITREG(NI_PCR, PCR_OWN); 425 i = 1000; 426 while (endwait == 0 && --i) 427 DELAY(10000); 428 429 if (endwait == 0) { 430 if (++retry < 3) 431 goto retry; 432 printf("%s: no response to set params\n", sc->sc_dev.dv_xname); 433 return; 434 } 435 436 /* Clear counters */ 437 msg = REMQHI(&fqb->nf_mforw); 438 msg->nm_opcode = BVP_MSG; 439 msg->nm_status = 0; 440 msg->nm_len = sizeof(struct ni_param) + 6; 441 msg->nm_opcode2 = NI_RCCNTR; 442 443 res = INSQTI(msg, &gvp->nc_forw0); 444 445 WAITREG(NI_PCR, PCR_OWN); 446 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 447 WAITREG(NI_PCR, PCR_OWN); 448 449 /* Enable transmit logic */ 450 msg = REMQHI(&fqb->nf_mforw); 451 452 msg->nm_opcode = BVP_MSG; 453 msg->nm_status = 0; 454 msg->nm_len = 18; 455 msg->nm_opcode2 = NI_STPTDB; 456 ptdb = (struct ni_ptdb *)&msg->nm_text[0]; 457 memset(ptdb, 0, sizeof(struct ni_ptdb)); 458 ptdb->np_index = 1; 459 ptdb->np_fque = 1; 460 461 res = INSQTI(msg, &gvp->nc_forw0); 462 463 WAITREG(NI_PCR, PCR_OWN); 464 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 465 WAITREG(NI_PCR, PCR_OWN); 466 467 /* Wait for everything to finish */ 468 WAITREG(NI_PSR, PSR_OWN); 469 470 printf("%s: hardware address %s\n", sc->sc_dev.dv_xname, 471 ether_sprintf(sc->sc_enaddr)); 472 473 /* 474 * Attach the interface. 475 */ 476 if_attach(ifp); 477 ether_ifattach(ifp, sc->sc_enaddr); 478 if (shutdownhook_establish(ni_shutdown, sc) == 0) 479 printf("%s: WARNING: unable to establish shutdown hook\n", 480 sc->sc_dev.dv_xname); 481 } 482 483 /* 484 * Initialization of interface. 485 */ 486 void 487 niinit(sc) 488 struct ni_softc *sc; 489 { 490 struct ifnet *ifp = (struct ifnet *)&sc->sc_if; 491 492 /* 493 * Set flags (so ni_setup() do the right thing). 494 */ 495 ifp->if_flags |= IFF_RUNNING; 496 ifp->if_flags &= ~IFF_OACTIVE; 497 498 /* 499 * Send setup messages so that the rx/tx locic starts. 500 */ 501 ni_setup(sc); 502 503 } 504 505 /* 506 * Start output on interface. 507 */ 508 void 509 nistart(ifp) 510 struct ifnet *ifp; 511 { 512 struct ni_softc *sc = ifp->if_softc; 513 struct ni_dg *data; 514 struct ni_bbd *bdp; 515 struct mbuf *m, *m0; 516 int i, cnt, res, mlen; 517 518 if (ifp->if_flags & IFF_OACTIVE) 519 return; 520 #ifdef DEBUG 521 if (ifp->if_flags & IFF_DEBUG) 522 printf("%s: nistart\n", sc->sc_dev.dv_xname); 523 #endif 524 525 while (fqb->nf_dforw) { 526 IFQ_POLL(&ifp->if_snd, m); 527 if (m == 0) 528 break; 529 530 data = REMQHI(&fqb->nf_dforw); 531 if ((int)data == Q_EMPTY) { 532 ifp->if_flags |= IFF_OACTIVE; 533 break; 534 } 535 536 IFQ_DEQUEUE(&ifp->if_snd, m); 537 538 /* 539 * Count number of mbufs in chain. 540 * Always do DMA directly from mbufs, therefore the transmit 541 * ring is really big. 542 */ 543 for (m0 = m, cnt = 0; m0; m0 = m0->m_next) 544 if (m0->m_len) 545 cnt++; 546 if (cnt > NTXFRAGS) 547 panic("nistart"); /* XXX */ 548 549 #if NBPFILTER > 0 550 if (ifp->if_bpf) 551 bpf_mtap(ifp->if_bpf, m); 552 #endif 553 bdp = &bbd[(data->bufs[0]._index & 0x7fff)]; 554 for (m0 = m, i = 0, mlen = 0; m0; m0 = m0->m_next) { 555 if (m0->m_len == 0) 556 continue; 557 bdp->nb_status = (mtod(m0, u_int32_t) & NIBD_OFFSET) | 558 NIBD_VALID; 559 bdp->nb_pte = (u_int32_t)kvtopte(mtod(m0, void *)); 560 bdp->nb_len = m0->m_len; 561 data->bufs[i]._offset = 0; 562 data->bufs[i]._len = bdp->nb_len; 563 data->bufs[i]._index |= NIDG_CHAIN; 564 mlen += bdp->nb_len; 565 bdp++; 566 i++; 567 } 568 data->nd_opcode = BVP_DGRAM; 569 data->nd_pad3 = 1; 570 data->nd_ptdbidx = 1; 571 data->nd_len = 10 + i * 8; 572 data->bufs[i - 1]._index &= ~NIDG_CHAIN; 573 data->nd_cmdref = (u_int32_t)m; 574 #ifdef DEBUG 575 if (ifp->if_flags & IFF_DEBUG) 576 printf("%s: sending %d bytes (%d segments)\n", 577 sc->sc_dev.dv_xname, mlen, i); 578 #endif 579 580 res = INSQTI(data, &gvp->nc_forw0); 581 if (res == Q_EMPTY) { 582 WAITREG(NI_PCR, PCR_OWN); 583 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 584 } 585 } 586 } 587 588 void 589 niintr(void *arg) 590 { 591 struct ni_softc *sc = arg; 592 struct ni_dg *data; 593 struct ni_msg *msg; 594 struct ifnet *ifp = &sc->sc_if; 595 struct ni_bbd *bd; 596 struct mbuf *m; 597 int idx, res; 598 599 if ((NI_RREG(NI_PSR) & PSR_STATE) != PSR_ENABLED) 600 return; 601 602 if ((NI_RREG(NI_PSR) & PSR_ERR)) 603 printf("%s: PSR %x\n", sc->sc_dev.dv_xname, NI_RREG(NI_PSR)); 604 605 KERNEL_LOCK(1, NULL); 606 /* Got any response packets? */ 607 while ((NI_RREG(NI_PSR) & PSR_RSQ) && (data = REMQHI(&gvp->nc_forwr))) { 608 609 switch (data->nd_opcode) { 610 case BVP_DGRAMRX: /* Receive datagram */ 611 idx = data->bufs[0]._index; 612 bd = &bbd[idx]; 613 m = (void *)data->nd_cmdref; 614 m->m_pkthdr.len = m->m_len = 615 data->bufs[0]._len - ETHER_CRC_LEN; 616 m->m_pkthdr.rcvif = ifp; 617 if (ni_add_rxbuf(sc, data, idx)) { 618 bd->nb_len = (m->m_ext.ext_size - 2); 619 bd->nb_pte = 620 (long)kvtopte(m->m_ext.ext_buf); 621 bd->nb_status = 2 | NIBD_VALID; 622 bd->nb_key = 1; 623 } 624 data->nd_len = RXADD; 625 data->nd_status = 0; 626 res = INSQTI(data, &fqb->nf_rforw); 627 if (res == Q_EMPTY) { 628 WAITREG(NI_PCR, PCR_OWN); 629 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_RFREEQ|PCR_OWN); 630 } 631 if (m == (void *)data->nd_cmdref) 632 break; /* Out of mbufs */ 633 634 #if NBPFILTER > 0 635 if (ifp->if_bpf) 636 bpf_mtap(ifp->if_bpf, m); 637 #endif 638 (*ifp->if_input)(ifp, m); 639 break; 640 641 case BVP_DGRAM: 642 m = (struct mbuf *)data->nd_cmdref; 643 ifp->if_flags &= ~IFF_OACTIVE; 644 m_freem(m); 645 res = INSQTI(data, &fqb->nf_dforw); 646 if (res == Q_EMPTY) { 647 WAITREG(NI_PCR, PCR_OWN); 648 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_DFREEQ|PCR_OWN); 649 } 650 break; 651 652 case BVP_MSGRX: 653 msg = (struct ni_msg *)data; 654 switch (msg->nm_opcode2) { 655 case NI_WPARAM: 656 memcpy(sc->sc_enaddr, ((struct ni_param *)&msg->nm_text[0])->np_dpa, ETHER_ADDR_LEN); 657 endwait = 1; 658 break; 659 660 case NI_RCCNTR: 661 case NI_CLPTDB: 662 case NI_STPTDB: 663 break; 664 665 default: 666 printf("Unkn resp %d\n", 667 msg->nm_opcode2); 668 break; 669 } 670 res = INSQTI(data, &fqb->nf_mforw); 671 if (res == Q_EMPTY) { 672 WAITREG(NI_PCR, PCR_OWN); 673 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_MFREEQ|PCR_OWN); 674 } 675 break; 676 677 default: 678 printf("Unknown opcode %d\n", data->nd_opcode); 679 res = INSQTI(data, &fqb->nf_mforw); 680 if (res == Q_EMPTY) { 681 WAITREG(NI_PCR, PCR_OWN); 682 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_MFREEQ|PCR_OWN); 683 } 684 } 685 } 686 687 /* Try to kick on the start routine again */ 688 nistart(ifp); 689 690 NI_WREG(NI_PSR, NI_RREG(NI_PSR) & ~(PSR_OWN|PSR_RSQ)); 691 KERNEL_UNLOCK_ONE(NULL); 692 } 693 694 /* 695 * Process an ioctl request. 696 */ 697 int 698 niioctl(ifp, cmd, data) 699 register struct ifnet *ifp; 700 u_long cmd; 701 void *data; 702 { 703 struct ni_softc *sc = ifp->if_softc; 704 struct ifaddr *ifa = (struct ifaddr *)data; 705 int s = splnet(), error = 0; 706 707 switch (cmd) { 708 709 case SIOCSIFADDR: 710 ifp->if_flags |= IFF_UP; 711 switch(ifa->ifa_addr->sa_family) { 712 #ifdef INET 713 case AF_INET: 714 niinit(sc); 715 arp_ifinit(ifp, ifa); 716 break; 717 #endif 718 } 719 break; 720 721 case SIOCSIFFLAGS: 722 if ((ifp->if_flags & IFF_UP) == 0 && 723 (ifp->if_flags & IFF_RUNNING) != 0) { 724 /* 725 * If interface is marked down and it is running, 726 * stop it. 727 */ 728 ifp->if_flags &= ~IFF_RUNNING; 729 ni_setup(sc); 730 } else if ((ifp->if_flags & IFF_UP) != 0 && 731 (ifp->if_flags & IFF_RUNNING) == 0) { 732 /* 733 * If interface it marked up and it is stopped, then 734 * start it. 735 */ 736 niinit(sc); 737 } else if ((ifp->if_flags & IFF_UP) != 0) { 738 /* 739 * Send a new setup packet to match any new changes. 740 * (Like IFF_PROMISC etc) 741 */ 742 ni_setup(sc); 743 } 744 break; 745 746 case SIOCADDMULTI: 747 case SIOCDELMULTI: 748 /* 749 * Update our multicast list. 750 */ 751 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 752 /* 753 * Multicast list has changed; set the hardware filter 754 * accordingly. 755 */ 756 if (ifp->if_flags & IFF_RUNNING) 757 ni_setup(sc); 758 error = 0; 759 } 760 break; 761 762 default: 763 error = EINVAL; 764 765 } 766 splx(s); 767 return (error); 768 } 769 770 /* 771 * Add a receive buffer to the indicated descriptor. 772 */ 773 int 774 ni_add_rxbuf(struct ni_softc *sc, struct ni_dg *data, int idx) 775 { 776 struct ni_bbd *bd = &bbd[idx]; 777 struct mbuf *m; 778 779 MGETHDR(m, M_DONTWAIT, MT_DATA); 780 if (m == NULL) 781 return (ENOBUFS); 782 783 MCLGET(m, M_DONTWAIT); 784 if ((m->m_flags & M_EXT) == 0) { 785 m_freem(m); 786 return (ENOBUFS); 787 } 788 789 m->m_data += 2; 790 bd->nb_len = (m->m_ext.ext_size - 2); 791 bd->nb_pte = (long)kvtopte(m->m_ext.ext_buf); 792 bd->nb_status = 2 | NIBD_VALID; 793 bd->nb_key = 1; 794 795 data->bufs[0]._offset = 0; 796 data->bufs[0]._len = bd->nb_len; 797 data->bufs[0]._index = idx; 798 data->nd_cmdref = (long)m; 799 800 return (0); 801 } 802 803 /* 804 * Create setup packet and put in queue for sending. 805 */ 806 void 807 ni_setup(struct ni_softc *sc) 808 { 809 struct ifnet *ifp = &sc->sc_if; 810 struct ni_msg *msg; 811 struct ni_ptdb *ptdb; 812 struct ether_multi *enm; 813 struct ether_multistep step; 814 int i, res; 815 816 msg = REMQHI(&fqb->nf_mforw); 817 if ((int)msg == Q_EMPTY) 818 return; /* What to do? */ 819 820 ptdb = (struct ni_ptdb *)&msg->nm_text[0]; 821 memset(ptdb, 0, sizeof(struct ni_ptdb)); 822 823 msg->nm_opcode = BVP_MSG; 824 msg->nm_len = 18; 825 ptdb->np_index = 2; /* definition type index */ 826 ptdb->np_fque = 2; /* Free queue */ 827 if (ifp->if_flags & IFF_RUNNING) { 828 msg->nm_opcode2 = NI_STPTDB; 829 ptdb->np_type = ETHERTYPE_IP; 830 ptdb->np_flags = PTDB_UNKN|PTDB_BDC; 831 if (ifp->if_flags & IFF_PROMISC) 832 ptdb->np_flags |= PTDB_PROMISC; 833 memset(ptdb->np_mcast[0], 0xff, ETHER_ADDR_LEN); /* Broadcast */ 834 ptdb->np_adrlen = 1; 835 msg->nm_len += 8; 836 ifp->if_flags &= ~IFF_ALLMULTI; 837 if ((ifp->if_flags & IFF_PROMISC) == 0) { 838 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 839 i = 1; 840 while (enm != NULL) { 841 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 6)) { 842 ifp->if_flags |= IFF_ALLMULTI; 843 ptdb->np_flags |= PTDB_AMC; 844 break; 845 } 846 msg->nm_len += 8; 847 ptdb->np_adrlen++; 848 memcpy(ptdb->np_mcast[i++], enm->enm_addrlo, 849 ETHER_ADDR_LEN); 850 ETHER_NEXT_MULTI(step, enm); 851 } 852 } 853 } else 854 msg->nm_opcode2 = NI_CLPTDB; 855 856 res = INSQTI(msg, &gvp->nc_forw0); 857 if (res == Q_EMPTY) { 858 WAITREG(NI_PCR, PCR_OWN); 859 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 860 } 861 } 862 863 /* 864 * Check for dead transmit logic. Not uncommon. 865 */ 866 void 867 nitimeout(ifp) 868 struct ifnet *ifp; 869 { 870 #if 0 871 struct ni_softc *sc = ifp->if_softc; 872 873 if (sc->sc_inq == 0) 874 return; 875 876 printf("%s: xmit logic died, resetting...\n", sc->sc_dev.dv_xname); 877 /* 878 * Do a reset of interface, to get it going again. 879 * Will it work by just restart the transmit logic? 880 */ 881 niinit(sc); 882 #endif 883 } 884 885 /* 886 * Shutdown hook. Make sure the interface is stopped at reboot. 887 */ 888 void 889 ni_shutdown(arg) 890 void *arg; 891 { 892 struct ni_softc *sc = arg; 893 894 WAITREG(NI_PCR, PCR_OWN); 895 NI_WREG(NI_PCR, PCR_OWN|PCR_SHUTDOWN); 896 WAITREG(NI_PCR, PCR_OWN); 897 WAITREG(NI_PSR, PSR_OWN); 898 899 } 900 901
Indexes created Wed Oct 15 16:09:53 GMT 2025