if_ni.c revision 1.35.4.3
1 /* $NetBSD: if_ni.c,v 1.35.4.3 2010/08/11 22:53:18 yamt 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 1.35.4.3 2010/08/11 22:53:18 yamt Exp $"); 40 41 #include "opt_inet.h" 42 43 #include <sys/param.h> 44 #include <sys/mbuf.h> 45 #include <sys/socket.h> 46 #include <sys/device.h> 47 #include <sys/systm.h> 48 #include <sys/sockio.h> 49 #include <sys/sched.h> 50 51 #include <uvm/uvm_extern.h> 52 53 #include <net/if.h> 54 #include <net/if_ether.h> 55 #include <net/if_dl.h> 56 57 #include <netinet/in.h> 58 #include <netinet/if_inarp.h> 59 60 #include <net/bpf.h> 61 #include <net/bpfdesc.h> 62 63 #include <sys/bus.h> 64 #ifdef __vax__ 65 #include <machine/mtpr.h> 66 #include <machine/pte.h> 67 #endif 68 69 #include <dev/bi/bireg.h> 70 #include <dev/bi/bivar.h> 71 72 #include "ioconf.h" 73 #include "locators.h" 74 75 /* 76 * Tunable buffer parameters. Good idea to have them as power of 8; then 77 * they will fit into a logical VAX page. 78 */ 79 #define NMSGBUF 8 /* Message queue entries */ 80 #define NTXBUF 16 /* Transmit queue entries */ 81 #define NTXFRAGS 8 /* Number of transmit buffer fragments */ 82 #define NRXBUF 24 /* Receive queue entries */ 83 #define NBDESCS (NTXBUF * NTXFRAGS + NRXBUF) 84 #define NQUEUES 3 /* RX + TX + MSG */ 85 #define PKTHDR 18 /* Length of (control) packet header */ 86 #define RXADD 18 /* Additional length of receive datagram */ 87 #define TXADD (10+NTXFRAGS*8) /* "" transmit "" */ 88 #define MSGADD 134 /* "" message "" */ 89 90 #include <dev/bi/if_nireg.h> /* XXX include earlier */ 91 92 /* 93 * Macros for (most cases of) insqti/remqhi. 94 * Retry NRETRIES times to do the operation, if it still fails assume 95 * a lost lock and panic. 96 */ 97 #define NRETRIES 100 98 #define INSQTI(e, h) ({ \ 99 int ret = 0, __i; \ 100 for (__i = 0; __i < NRETRIES; __i++) { \ 101 if ((ret = insqti(e, h)) != ILCK_FAILED) \ 102 break; \ 103 } \ 104 if (__i == NRETRIES) \ 105 panic("ni: insqti failed at %d", __LINE__); \ 106 ret; \ 107 }) 108 #define REMQHI(h) ({ \ 109 int __i; void *ret = NULL; \ 110 for (__i = 0; __i < NRETRIES; __i++) { \ 111 if ((ret = remqhi(h)) != (void *)ILCK_FAILED) \ 112 break; \ 113 } \ 114 if (__i == NRETRIES) \ 115 panic("ni: remqhi failed at %d", __LINE__); \ 116 ret; \ 117 }) 118 119 120 #define nipqb (&sc->sc_gvppqb->nc_pqb) 121 #define gvp sc->sc_gvppqb 122 #define fqb sc->sc_fqb 123 #define bbd sc->sc_bbd 124 125 struct ni_softc { 126 device_t sc_dev; /* Configuration common part */ 127 struct evcnt sc_intrcnt; /* Interrupt coounting */ 128 struct ethercom sc_ec; /* Ethernet common part */ 129 #define sc_if sc_ec.ec_if /* network-visible interface */ 130 bus_space_tag_t sc_iot; 131 bus_addr_t sc_ioh; 132 bus_dma_tag_t sc_dmat; 133 struct ni_gvppqb *sc_gvppqb; /* Port queue block */ 134 struct ni_gvppqb *sc_pgvppqb; /* Phys address of PQB */ 135 struct ni_fqb *sc_fqb; /* Free Queue block */ 136 struct ni_bbd *sc_bbd; /* Buffer descriptors */ 137 u_int8_t sc_enaddr[ETHER_ADDR_LEN]; 138 }; 139 140 static int nimatch(device_t, cfdata_t, void *); 141 static void niattach(device_t, device_t, void *); 142 static void niinit(struct ni_softc *); 143 static void nistart(struct ifnet *); 144 static void niintr(void *); 145 static int niioctl(struct ifnet *, u_long, void *); 146 static int ni_add_rxbuf(struct ni_softc *, struct ni_dg *, int); 147 static void ni_setup(struct ni_softc *); 148 static void nitimeout(struct ifnet *); 149 static void ni_shutdown(void *); 150 static void ni_getpgs(struct ni_softc *sc, int size, void **v, paddr_t *p); 151 static int failtest(struct ni_softc *, int, int, int, const char *); 152 153 volatile int endwait, retry; /* Used during autoconfig */ 154 155 CFATTACH_DECL_NEW(ni, sizeof(struct ni_softc), 156 nimatch, niattach, NULL, NULL); 157 158 #define NI_WREG(csr, val) \ 159 bus_space_write_4(sc->sc_iot, sc->sc_ioh, csr, val) 160 #define NI_RREG(csr) \ 161 bus_space_read_4(sc->sc_iot, sc->sc_ioh, csr) 162 163 #define WAITREG(csr,val) while (NI_RREG(csr) & val); 164 /* 165 * Check for present device. 166 */ 167 static int 168 nimatch(device_t parent, cfdata_t cf, void *aux) 169 { 170 struct bi_attach_args *ba = aux; 171 u_short type; 172 173 type = bus_space_read_2(ba->ba_iot, ba->ba_ioh, BIREG_DTYPE); 174 if (type != BIDT_DEBNA && type != BIDT_DEBNT && type != BIDT_DEBNK) 175 return 0; 176 177 if (cf->cf_loc[BICF_NODE] != BICF_NODE_DEFAULT && 178 cf->cf_loc[BICF_NODE] != ba->ba_nodenr) 179 return 0; 180 181 return 1; 182 } 183 184 /* 185 * Allocate a bunch of descriptor-safe memory. 186 * We need to get the structures from the beginning of its own pages. 187 */ 188 static void 189 ni_getpgs(struct ni_softc *sc, int size, void **v, paddr_t *p) 190 { 191 bus_dma_segment_t seg; 192 int nsegs, error; 193 194 if ((error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1, 195 &nsegs, BUS_DMA_NOWAIT)) != 0) 196 panic(" unable to allocate memory: error %d", error); 197 198 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, nsegs, size, v, 199 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) 200 panic(" unable to map memory: error %d", error); 201 202 if (p) 203 *p = seg.ds_addr; 204 memset(*v, 0, size); 205 } 206 207 static int 208 failtest(struct ni_softc *sc, int reg, int mask, int test, const char *str) 209 { 210 int i = 100; 211 212 do { 213 DELAY(100000); 214 } while (((NI_RREG(reg) & mask) != test) && --i); 215 216 if (i == 0) { 217 printf("%s: %s\n", device_xname(sc->sc_dev), str); 218 return 1; 219 } 220 return 0; 221 } 222 223 224 /* 225 * Interface exists: make available by filling in network interface 226 * record. System will initialize the interface when it is ready 227 * to accept packets. 228 */ 229 static void 230 niattach(device_t parent, device_t self, void *aux) 231 { 232 struct bi_attach_args *ba = aux; 233 struct ni_softc *sc = device_private(self); 234 struct ifnet *ifp = (struct ifnet *)&sc->sc_if; 235 struct ni_msg *msg; 236 struct ni_ptdb *ptdb; 237 void *va; 238 int i, j, s, res; 239 u_short type; 240 241 sc->sc_dev = self; 242 243 type = bus_space_read_2(ba->ba_iot, ba->ba_ioh, BIREG_DTYPE); 244 printf(": DEBN%c\n", type == BIDT_DEBNA ? 'A' : type == BIDT_DEBNT ? 245 'T' : 'K'); 246 sc->sc_iot = ba->ba_iot; 247 sc->sc_ioh = ba->ba_ioh; 248 sc->sc_dmat = ba->ba_dmat; 249 250 bi_intr_establish(ba->ba_icookie, ba->ba_ivec, 251 niintr, sc, &sc->sc_intrcnt); 252 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 253 device_xname(self), "intr"); 254 255 ni_getpgs(sc, sizeof(struct ni_gvppqb), (void **)&sc->sc_gvppqb, 256 (paddr_t *)&sc->sc_pgvppqb); 257 ni_getpgs(sc, sizeof(struct ni_fqb), (void **)&sc->sc_fqb, 0); 258 ni_getpgs(sc, NBDESCS * sizeof(struct ni_bbd), 259 (void **)&sc->sc_bbd, 0); 260 /* 261 * Zero the newly allocated memory. 262 */ 263 264 nipqb->np_veclvl = (ba->ba_ivec << 2) + 2; 265 nipqb->np_node = ba->ba_intcpu; 266 nipqb->np_vpqb = (u_int32_t)gvp; 267 #ifdef __vax__ 268 nipqb->np_spt = nipqb->np_gpt = mfpr(PR_SBR); 269 nipqb->np_sptlen = nipqb->np_gptlen = mfpr(PR_SLR); 270 #else 271 #error Must fix support for non-vax. 272 #endif 273 nipqb->np_bvplvl = 1; 274 nipqb->np_vfqb = (u_int32_t)fqb; 275 nipqb->np_vbdt = (u_int32_t)bbd; 276 nipqb->np_nbdr = NBDESCS; 277 278 /* Free queue block */ 279 nipqb->np_freeq = NQUEUES; 280 fqb->nf_mlen = PKTHDR+MSGADD; 281 fqb->nf_dlen = PKTHDR+TXADD; 282 fqb->nf_rlen = PKTHDR+RXADD; 283 284 strlcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 285 ifp->if_softc = sc; 286 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 287 ifp->if_start = nistart; 288 ifp->if_ioctl = niioctl; 289 ifp->if_watchdog = nitimeout; 290 IFQ_SET_READY(&ifp->if_snd); 291 292 /* 293 * Start init sequence. 294 */ 295 296 /* Reset the node */ 297 NI_WREG(BIREG_VAXBICSR, NI_RREG(BIREG_VAXBICSR) | BICSR_NRST); 298 DELAY(500000); 299 i = 20; 300 while ((NI_RREG(BIREG_VAXBICSR) & BICSR_BROKE) && --i) 301 DELAY(500000); 302 if (i == 0) { 303 printf("%s: BROKE bit set after reset\n", device_xname(self)); 304 return; 305 } 306 307 /* Check state */ 308 if (failtest(sc, NI_PSR, PSR_STATE, PSR_UNDEF, "not undefined state")) 309 return; 310 311 /* Clear owner bits */ 312 NI_WREG(NI_PSR, NI_RREG(NI_PSR) & ~PSR_OWN); 313 NI_WREG(NI_PCR, NI_RREG(NI_PCR) & ~PCR_OWN); 314 315 /* kick off init */ 316 NI_WREG(NI_PCR, (u_int32_t)sc->sc_pgvppqb | PCR_INIT | PCR_OWN); 317 while (NI_RREG(NI_PCR) & PCR_OWN) 318 DELAY(100000); 319 320 /* Check state */ 321 if (failtest(sc, NI_PSR, PSR_INITED, PSR_INITED, "failed initialize")) 322 return; 323 324 NI_WREG(NI_PSR, NI_RREG(NI_PSR) & ~PSR_OWN); 325 326 WAITREG(NI_PCR, PCR_OWN); 327 NI_WREG(NI_PCR, PCR_OWN|PCR_ENABLE); 328 WAITREG(NI_PCR, PCR_OWN); 329 WAITREG(NI_PSR, PSR_OWN); 330 331 /* Check state */ 332 if (failtest(sc, NI_PSR, PSR_STATE, PSR_ENABLED, "failed enable")) 333 return; 334 335 NI_WREG(NI_PSR, NI_RREG(NI_PSR) & ~PSR_OWN); 336 337 /* 338 * The message queue packets must be located on the beginning 339 * of a page. A VAX page is 512 bytes, but it clusters 8 pages. 340 * This knowledge is used here when allocating pages. 341 * !!! How should this be done on MIPS and Alpha??? !!! 342 */ 343 #if NBPG < 4096 344 #error pagesize too small 345 #endif 346 s = splvm(); 347 /* Set up message free queue */ 348 ni_getpgs(sc, NMSGBUF * 512, &va, 0); 349 for (i = 0; i < NMSGBUF; i++) { 350 msg = (void *)((char *)va + i * 512); 351 res = INSQTI(msg, &fqb->nf_mforw); 352 } 353 WAITREG(NI_PCR, PCR_OWN); 354 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_MFREEQ|PCR_OWN); 355 WAITREG(NI_PCR, PCR_OWN); 356 357 /* Set up xmit queue */ 358 ni_getpgs(sc, NTXBUF * 512, &va, 0); 359 for (i = 0; i < NTXBUF; i++) { 360 struct ni_dg *data; 361 362 data = (void *)((char *)va + i * 512); 363 data->nd_status = 0; 364 data->nd_len = TXADD; 365 data->nd_ptdbidx = 1; 366 data->nd_opcode = BVP_DGRAM; 367 for (j = 0; j < NTXFRAGS; j++) { 368 data->bufs[j]._offset = 0; 369 data->bufs[j]._key = 1; 370 bbd[i * NTXFRAGS + j].nb_key = 1; 371 bbd[i * NTXFRAGS + j].nb_status = 0; 372 data->bufs[j]._index = i * NTXFRAGS + j; 373 } 374 res = INSQTI(data, &fqb->nf_dforw); 375 } 376 WAITREG(NI_PCR, PCR_OWN); 377 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_DFREEQ|PCR_OWN); 378 WAITREG(NI_PCR, PCR_OWN); 379 380 /* recv buffers */ 381 ni_getpgs(sc, NRXBUF * 512, &va, 0); 382 for (i = 0; i < NRXBUF; i++) { 383 struct ni_dg *data; 384 int idx; 385 386 data = (void *)((char *)va + i * 512); 387 data->nd_len = RXADD; 388 data->nd_opcode = BVP_DGRAMRX; 389 data->nd_ptdbidx = 2; 390 data->bufs[0]._key = 1; 391 392 idx = NTXBUF * NTXFRAGS + i; 393 if (ni_add_rxbuf(sc, data, idx)) 394 panic("niattach: ni_add_rxbuf: out of mbufs"); 395 396 res = INSQTI(data, &fqb->nf_rforw); 397 } 398 WAITREG(NI_PCR, PCR_OWN); 399 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_RFREEQ|PCR_OWN); 400 WAITREG(NI_PCR, PCR_OWN); 401 402 splx(s); 403 404 /* Set initial parameters */ 405 msg = REMQHI(&fqb->nf_mforw); 406 407 msg->nm_opcode = BVP_MSG; 408 msg->nm_status = 0; 409 msg->nm_len = sizeof(struct ni_param) + 6; 410 msg->nm_opcode2 = NI_WPARAM; 411 ((struct ni_param *)&msg->nm_text[0])->np_flags = NP_PAD; 412 413 endwait = retry = 0; 414 res = INSQTI(msg, &gvp->nc_forw0); 415 416 retry: WAITREG(NI_PCR, PCR_OWN); 417 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 418 WAITREG(NI_PCR, PCR_OWN); 419 i = 1000; 420 while (endwait == 0 && --i) 421 DELAY(10000); 422 423 if (endwait == 0) { 424 if (++retry < 3) 425 goto retry; 426 printf("%s: no response to set params\n", device_xname(self)); 427 return; 428 } 429 430 /* Clear counters */ 431 msg = REMQHI(&fqb->nf_mforw); 432 msg->nm_opcode = BVP_MSG; 433 msg->nm_status = 0; 434 msg->nm_len = sizeof(struct ni_param) + 6; 435 msg->nm_opcode2 = NI_RCCNTR; 436 437 res = INSQTI(msg, &gvp->nc_forw0); 438 439 WAITREG(NI_PCR, PCR_OWN); 440 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 441 WAITREG(NI_PCR, PCR_OWN); 442 443 /* Enable transmit logic */ 444 msg = REMQHI(&fqb->nf_mforw); 445 446 msg->nm_opcode = BVP_MSG; 447 msg->nm_status = 0; 448 msg->nm_len = 18; 449 msg->nm_opcode2 = NI_STPTDB; 450 ptdb = (struct ni_ptdb *)&msg->nm_text[0]; 451 memset(ptdb, 0, sizeof(struct ni_ptdb)); 452 ptdb->np_index = 1; 453 ptdb->np_fque = 1; 454 455 res = INSQTI(msg, &gvp->nc_forw0); 456 457 WAITREG(NI_PCR, PCR_OWN); 458 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 459 WAITREG(NI_PCR, PCR_OWN); 460 461 /* Wait for everything to finish */ 462 WAITREG(NI_PSR, PSR_OWN); 463 464 printf("%s: hardware address %s\n", device_xname(self), 465 ether_sprintf(sc->sc_enaddr)); 466 467 /* 468 * Attach the interface. 469 */ 470 if_attach(ifp); 471 ether_ifattach(ifp, sc->sc_enaddr); 472 if (shutdownhook_establish(ni_shutdown, sc) == 0) 473 aprint_error_dev(self, "WARNING: unable to establish shutdown hook\n"); 474 } 475 476 /* 477 * Initialization of interface. 478 */ 479 void 480 niinit(struct ni_softc *sc) 481 { 482 struct ifnet *ifp = &sc->sc_if; 483 484 /* 485 * Set flags (so ni_setup() do the right thing). 486 */ 487 ifp->if_flags |= IFF_RUNNING; 488 ifp->if_flags &= ~IFF_OACTIVE; 489 490 /* 491 * Send setup messages so that the rx/tx locic starts. 492 */ 493 ni_setup(sc); 494 495 } 496 497 /* 498 * Start output on interface. 499 */ 500 void 501 nistart(struct ifnet *ifp) 502 { 503 struct ni_softc *sc = ifp->if_softc; 504 struct ni_dg *data; 505 struct ni_bbd *bdp; 506 struct mbuf *m, *m0; 507 int i, cnt, res, mlen; 508 509 if (ifp->if_flags & IFF_OACTIVE) 510 return; 511 #ifdef DEBUG 512 if (ifp->if_flags & IFF_DEBUG) 513 printf("%s: nistart\n", device_xname(sc->sc_dev)); 514 #endif 515 516 while (fqb->nf_dforw) { 517 IFQ_POLL(&ifp->if_snd, m); 518 if (m == 0) 519 break; 520 521 data = REMQHI(&fqb->nf_dforw); 522 if ((int)data == Q_EMPTY) { 523 ifp->if_flags |= IFF_OACTIVE; 524 break; 525 } 526 527 IFQ_DEQUEUE(&ifp->if_snd, m); 528 529 /* 530 * Count number of mbufs in chain. 531 * Always do DMA directly from mbufs, therefore the transmit 532 * ring is really big. 533 */ 534 for (m0 = m, cnt = 0; m0; m0 = m0->m_next) 535 if (m0->m_len) 536 cnt++; 537 if (cnt > NTXFRAGS) 538 panic("nistart"); /* XXX */ 539 540 bpf_mtap(ifp, m); 541 bdp = &bbd[(data->bufs[0]._index & 0x7fff)]; 542 for (m0 = m, i = 0, mlen = 0; m0; m0 = m0->m_next) { 543 if (m0->m_len == 0) 544 continue; 545 bdp->nb_status = (mtod(m0, u_int32_t) & NIBD_OFFSET) | 546 NIBD_VALID; 547 bdp->nb_pte = (u_int32_t)kvtopte(mtod(m0, void *)); 548 bdp->nb_len = m0->m_len; 549 data->bufs[i]._offset = 0; 550 data->bufs[i]._len = bdp->nb_len; 551 data->bufs[i]._index |= NIDG_CHAIN; 552 mlen += bdp->nb_len; 553 bdp++; 554 i++; 555 } 556 data->nd_opcode = BVP_DGRAM; 557 data->nd_pad3 = 1; 558 data->nd_ptdbidx = 1; 559 data->nd_len = 10 + i * 8; 560 data->bufs[i - 1]._index &= ~NIDG_CHAIN; 561 data->nd_cmdref = (u_int32_t)m; 562 #ifdef DEBUG 563 if (ifp->if_flags & IFF_DEBUG) 564 printf("%s: sending %d bytes (%d segments)\n", 565 device_xname(sc->sc_dev), mlen, i); 566 #endif 567 568 res = INSQTI(data, &gvp->nc_forw0); 569 if (res == Q_EMPTY) { 570 WAITREG(NI_PCR, PCR_OWN); 571 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 572 } 573 } 574 } 575 576 void 577 niintr(void *arg) 578 { 579 struct ni_softc *sc = arg; 580 struct ni_dg *data; 581 struct ni_msg *msg; 582 struct ifnet *ifp = &sc->sc_if; 583 struct ni_bbd *bd; 584 struct mbuf *m; 585 int idx, res; 586 587 if ((NI_RREG(NI_PSR) & PSR_STATE) != PSR_ENABLED) 588 return; 589 590 if ((NI_RREG(NI_PSR) & PSR_ERR)) 591 printf("%s: PSR %x\n", device_xname(sc->sc_dev), NI_RREG(NI_PSR)); 592 593 KERNEL_LOCK(1, NULL); 594 /* Got any response packets? */ 595 while ((NI_RREG(NI_PSR) & PSR_RSQ) && (data = REMQHI(&gvp->nc_forwr))) { 596 597 switch (data->nd_opcode) { 598 case BVP_DGRAMRX: /* Receive datagram */ 599 idx = data->bufs[0]._index; 600 bd = &bbd[idx]; 601 m = (void *)data->nd_cmdref; 602 m->m_pkthdr.len = m->m_len = 603 data->bufs[0]._len - ETHER_CRC_LEN; 604 m->m_pkthdr.rcvif = ifp; 605 if (ni_add_rxbuf(sc, data, idx)) { 606 bd->nb_len = (m->m_ext.ext_size - 2); 607 bd->nb_pte = 608 (long)kvtopte(m->m_ext.ext_buf); 609 bd->nb_status = 2 | NIBD_VALID; 610 bd->nb_key = 1; 611 } 612 data->nd_len = RXADD; 613 data->nd_status = 0; 614 res = INSQTI(data, &fqb->nf_rforw); 615 if (res == Q_EMPTY) { 616 WAITREG(NI_PCR, PCR_OWN); 617 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_RFREEQ|PCR_OWN); 618 } 619 if (m == (void *)data->nd_cmdref) 620 break; /* Out of mbufs */ 621 622 bpf_mtap(ifp, m); 623 (*ifp->if_input)(ifp, m); 624 break; 625 626 case BVP_DGRAM: 627 m = (struct mbuf *)data->nd_cmdref; 628 ifp->if_flags &= ~IFF_OACTIVE; 629 m_freem(m); 630 res = INSQTI(data, &fqb->nf_dforw); 631 if (res == Q_EMPTY) { 632 WAITREG(NI_PCR, PCR_OWN); 633 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_DFREEQ|PCR_OWN); 634 } 635 break; 636 637 case BVP_MSGRX: 638 msg = (struct ni_msg *)data; 639 switch (msg->nm_opcode2) { 640 case NI_WPARAM: 641 memcpy(sc->sc_enaddr, ((struct ni_param *)&msg->nm_text[0])->np_dpa, ETHER_ADDR_LEN); 642 endwait = 1; 643 break; 644 645 case NI_RCCNTR: 646 case NI_CLPTDB: 647 case NI_STPTDB: 648 break; 649 650 default: 651 printf("Unkn resp %d\n", 652 msg->nm_opcode2); 653 break; 654 } 655 res = INSQTI(data, &fqb->nf_mforw); 656 if (res == Q_EMPTY) { 657 WAITREG(NI_PCR, PCR_OWN); 658 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_MFREEQ|PCR_OWN); 659 } 660 break; 661 662 default: 663 printf("Unknown opcode %d\n", data->nd_opcode); 664 res = INSQTI(data, &fqb->nf_mforw); 665 if (res == Q_EMPTY) { 666 WAITREG(NI_PCR, PCR_OWN); 667 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_MFREEQ|PCR_OWN); 668 } 669 } 670 } 671 672 /* Try to kick on the start routine again */ 673 nistart(ifp); 674 675 NI_WREG(NI_PSR, NI_RREG(NI_PSR) & ~(PSR_OWN|PSR_RSQ)); 676 KERNEL_UNLOCK_ONE(NULL); 677 } 678 679 /* 680 * Process an ioctl request. 681 */ 682 int 683 niioctl(struct ifnet *ifp, u_long cmd, void *data) 684 { 685 struct ni_softc *sc = ifp->if_softc; 686 struct ifaddr *ifa = (struct ifaddr *)data; 687 int s = splnet(), error = 0; 688 689 switch (cmd) { 690 691 case SIOCINITIFADDR: 692 ifp->if_flags |= IFF_UP; 693 switch(ifa->ifa_addr->sa_family) { 694 #ifdef INET 695 case AF_INET: 696 niinit(sc); 697 arp_ifinit(ifp, ifa); 698 break; 699 #endif 700 } 701 break; 702 703 case SIOCSIFFLAGS: 704 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 705 break; 706 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 707 case IFF_RUNNING: 708 /* 709 * If interface is marked down and it is running, 710 * stop it. 711 */ 712 ifp->if_flags &= ~IFF_RUNNING; 713 ni_setup(sc); 714 break; 715 case IFF_UP: 716 /* 717 * If interface it marked up and it is stopped, then 718 * start it. 719 */ 720 niinit(sc); 721 break; 722 case IFF_UP|IFF_RUNNING: 723 /* 724 * Send a new setup packet to match any new changes. 725 * (Like IFF_PROMISC etc) 726 */ 727 ni_setup(sc); 728 break; 729 default: 730 break; 731 } 732 break; 733 734 case SIOCADDMULTI: 735 case SIOCDELMULTI: 736 /* 737 * Update our multicast list. 738 */ 739 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 740 /* 741 * Multicast list has changed; set the hardware filter 742 * accordingly. 743 */ 744 if (ifp->if_flags & IFF_RUNNING) 745 ni_setup(sc); 746 error = 0; 747 } 748 break; 749 750 default: 751 error = ether_ioctl(ifp, cmd, data); 752 break; 753 } 754 splx(s); 755 return (error); 756 } 757 758 /* 759 * Add a receive buffer to the indicated descriptor. 760 */ 761 int 762 ni_add_rxbuf(struct ni_softc *sc, struct ni_dg *data, int idx) 763 { 764 struct ni_bbd *bd = &bbd[idx]; 765 struct mbuf *m; 766 767 MGETHDR(m, M_DONTWAIT, MT_DATA); 768 if (m == NULL) 769 return (ENOBUFS); 770 771 MCLGET(m, M_DONTWAIT); 772 if ((m->m_flags & M_EXT) == 0) { 773 m_freem(m); 774 return (ENOBUFS); 775 } 776 777 m->m_data += 2; 778 bd->nb_len = (m->m_ext.ext_size - 2); 779 bd->nb_pte = (long)kvtopte(m->m_ext.ext_buf); 780 bd->nb_status = 2 | NIBD_VALID; 781 bd->nb_key = 1; 782 783 data->bufs[0]._offset = 0; 784 data->bufs[0]._len = bd->nb_len; 785 data->bufs[0]._index = idx; 786 data->nd_cmdref = (long)m; 787 788 return (0); 789 } 790 791 /* 792 * Create setup packet and put in queue for sending. 793 */ 794 void 795 ni_setup(struct ni_softc *sc) 796 { 797 struct ifnet *ifp = &sc->sc_if; 798 struct ni_msg *msg; 799 struct ni_ptdb *ptdb; 800 struct ether_multi *enm; 801 struct ether_multistep step; 802 int i, res; 803 804 msg = REMQHI(&fqb->nf_mforw); 805 if ((int)msg == Q_EMPTY) 806 return; /* What to do? */ 807 808 ptdb = (struct ni_ptdb *)&msg->nm_text[0]; 809 memset(ptdb, 0, sizeof(struct ni_ptdb)); 810 811 msg->nm_opcode = BVP_MSG; 812 msg->nm_len = 18; 813 ptdb->np_index = 2; /* definition type index */ 814 ptdb->np_fque = 2; /* Free queue */ 815 if (ifp->if_flags & IFF_RUNNING) { 816 msg->nm_opcode2 = NI_STPTDB; 817 ptdb->np_type = ETHERTYPE_IP; 818 ptdb->np_flags = PTDB_UNKN|PTDB_BDC; 819 if (ifp->if_flags & IFF_PROMISC) 820 ptdb->np_flags |= PTDB_PROMISC; 821 memset(ptdb->np_mcast[0], 0xff, ETHER_ADDR_LEN); /* Broadcast */ 822 ptdb->np_adrlen = 1; 823 msg->nm_len += 8; 824 ifp->if_flags &= ~IFF_ALLMULTI; 825 if ((ifp->if_flags & IFF_PROMISC) == 0) { 826 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 827 i = 1; 828 while (enm != NULL) { 829 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 6)) { 830 ifp->if_flags |= IFF_ALLMULTI; 831 ptdb->np_flags |= PTDB_AMC; 832 break; 833 } 834 msg->nm_len += 8; 835 ptdb->np_adrlen++; 836 memcpy(ptdb->np_mcast[i++], enm->enm_addrlo, 837 ETHER_ADDR_LEN); 838 ETHER_NEXT_MULTI(step, enm); 839 } 840 } 841 } else 842 msg->nm_opcode2 = NI_CLPTDB; 843 844 res = INSQTI(msg, &gvp->nc_forw0); 845 if (res == Q_EMPTY) { 846 WAITREG(NI_PCR, PCR_OWN); 847 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 848 } 849 } 850 851 /* 852 * Check for dead transmit logic. Not uncommon. 853 */ 854 void 855 nitimeout(struct ifnet *ifp) 856 { 857 #if 0 858 struct ni_softc *sc = ifp->if_softc; 859 860 if (sc->sc_inq == 0) 861 return; 862 863 printf("%s: xmit logic died, resetting...\n", device_xname(sc->sc_dev)); 864 /* 865 * Do a reset of interface, to get it going again. 866 * Will it work by just restart the transmit logic? 867 */ 868 niinit(sc); 869 #endif 870 } 871 872 /* 873 * Shutdown hook. Make sure the interface is stopped at reboot. 874 */ 875 void 876 ni_shutdown(void *arg) 877 { 878 struct ni_softc *sc = arg; 879 880 WAITREG(NI_PCR, PCR_OWN); 881 NI_WREG(NI_PCR, PCR_OWN|PCR_SHUTDOWN); 882 WAITREG(NI_PCR, PCR_OWN); 883 WAITREG(NI_PSR, PSR_OWN); 884 } 885
Indexes created Wed Oct 15 16:09:53 GMT 2025