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sys/dev/bi/if_ni.c
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1 /* $NetBSD: if_ni.c,v 1.22 2003/11/06 00:25:50 he 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 1.22 2003/11/06 00:25:50 he 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 <machine/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 __P((struct device *, struct cfdata *, void *)); 144 static void niattach __P((struct device *, struct device *, void *)); 145 static void niinit __P((struct ni_softc *)); 146 static void nistart __P((struct ifnet *)); 147 static void niintr __P((void *)); 148 static int niioctl __P((struct ifnet *, u_long, caddr_t)); 149 static int ni_add_rxbuf(struct ni_softc *, struct ni_dg *, int); 150 static void ni_setup __P((struct ni_softc *)); 151 static void nitimeout __P((struct ifnet *)); 152 static void ni_shutdown(void *); 153 static void ni_getpgs(struct ni_softc *sc, int size, caddr_t *v, paddr_t *p); 154 static int failtest(struct ni_softc *, int, int, int, 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, caddr_t *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, 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 caddr_t 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), (caddr_t *)&sc->sc_gvppqb, 262 (paddr_t *)&sc->sc_pgvppqb); 263 ni_getpgs(sc, sizeof(struct ni_fqb), (caddr_t *)&sc->sc_fqb, 0); 264 ni_getpgs(sc, NBDESCS * sizeof(struct ni_bbd), 265 (caddr_t *)&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 struct ni_msg *msg; 357 358 msg = (void *)(va + i * 512); 359 360 res = INSQTI(msg, &fqb->nf_mforw); 361 } 362 WAITREG(NI_PCR, PCR_OWN); 363 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_MFREEQ|PCR_OWN); 364 WAITREG(NI_PCR, PCR_OWN); 365 366 /* Set up xmit queue */ 367 ni_getpgs(sc, NTXBUF * 512, &va, 0); 368 for (i = 0; i < NTXBUF; i++) { 369 struct ni_dg *data; 370 371 data = (void *)(va + i * 512); 372 data->nd_status = 0; 373 data->nd_len = TXADD; 374 data->nd_ptdbidx = 1; 375 data->nd_opcode = BVP_DGRAM; 376 for (j = 0; j < NTXFRAGS; j++) { 377 data->bufs[j]._offset = 0; 378 data->bufs[j]._key = 1; 379 bbd[i * NTXFRAGS + j].nb_key = 1; 380 bbd[i * NTXFRAGS + j].nb_status = 0; 381 data->bufs[j]._index = i * NTXFRAGS + j; 382 } 383 res = INSQTI(data, &fqb->nf_dforw); 384 } 385 WAITREG(NI_PCR, PCR_OWN); 386 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_DFREEQ|PCR_OWN); 387 WAITREG(NI_PCR, PCR_OWN); 388 389 /* recv buffers */ 390 ni_getpgs(sc, NRXBUF * 512, &va, 0); 391 for (i = 0; i < NRXBUF; i++) { 392 struct ni_dg *data; 393 int idx; 394 395 data = (void *)(va + i * 512); 396 data->nd_len = RXADD; 397 data->nd_opcode = BVP_DGRAMRX; 398 data->nd_ptdbidx = 2; 399 data->bufs[0]._key = 1; 400 401 idx = NTXBUF * NTXFRAGS + i; 402 if (ni_add_rxbuf(sc, data, idx)) 403 panic("niattach: ni_add_rxbuf: out of mbufs"); 404 405 res = INSQTI(data, &fqb->nf_rforw); 406 } 407 WAITREG(NI_PCR, PCR_OWN); 408 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_RFREEQ|PCR_OWN); 409 WAITREG(NI_PCR, PCR_OWN); 410 411 splx(s); 412 413 /* Set initial parameters */ 414 msg = REMQHI(&fqb->nf_mforw); 415 416 msg->nm_opcode = BVP_MSG; 417 msg->nm_status = 0; 418 msg->nm_len = sizeof(struct ni_param) + 6; 419 msg->nm_opcode2 = NI_WPARAM; 420 ((struct ni_param *)&msg->nm_text[0])->np_flags = NP_PAD; 421 422 endwait = retry = 0; 423 res = INSQTI(msg, &gvp->nc_forw0); 424 425 retry: WAITREG(NI_PCR, PCR_OWN); 426 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 427 WAITREG(NI_PCR, PCR_OWN); 428 i = 1000; 429 while (endwait == 0 && --i) 430 DELAY(10000); 431 432 if (endwait == 0) { 433 if (++retry < 3) 434 goto retry; 435 printf("%s: no response to set params\n", sc->sc_dev.dv_xname); 436 return; 437 } 438 439 /* Clear counters */ 440 msg = REMQHI(&fqb->nf_mforw); 441 msg->nm_opcode = BVP_MSG; 442 msg->nm_status = 0; 443 msg->nm_len = sizeof(struct ni_param) + 6; 444 msg->nm_opcode2 = NI_RCCNTR; 445 446 res = INSQTI(msg, &gvp->nc_forw0); 447 448 WAITREG(NI_PCR, PCR_OWN); 449 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 450 WAITREG(NI_PCR, PCR_OWN); 451 452 /* Enable transmit logic */ 453 msg = REMQHI(&fqb->nf_mforw); 454 455 msg->nm_opcode = BVP_MSG; 456 msg->nm_status = 0; 457 msg->nm_len = 18; 458 msg->nm_opcode2 = NI_STPTDB; 459 ptdb = (struct ni_ptdb *)&msg->nm_text[0]; 460 memset(ptdb, 0, sizeof(struct ni_ptdb)); 461 ptdb->np_index = 1; 462 ptdb->np_fque = 1; 463 464 res = INSQTI(msg, &gvp->nc_forw0); 465 466 WAITREG(NI_PCR, PCR_OWN); 467 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 468 WAITREG(NI_PCR, PCR_OWN); 469 470 /* Wait for everything to finish */ 471 WAITREG(NI_PSR, PSR_OWN); 472 473 printf("%s: hardware address %s\n", sc->sc_dev.dv_xname, 474 ether_sprintf(sc->sc_enaddr)); 475 476 /* 477 * Attach the interface. 478 */ 479 if_attach(ifp); 480 ether_ifattach(ifp, sc->sc_enaddr); 481 if (shutdownhook_establish(ni_shutdown, sc) == 0) 482 printf("%s: WARNING: unable to establish shutdown hook\n", 483 sc->sc_dev.dv_xname); 484 } 485 486 /* 487 * Initialization of interface. 488 */ 489 void 490 niinit(sc) 491 struct ni_softc *sc; 492 { 493 struct ifnet *ifp = (struct ifnet *)&sc->sc_if; 494 495 /* 496 * Set flags (so ni_setup() do the right thing). 497 */ 498 ifp->if_flags |= IFF_RUNNING; 499 ifp->if_flags &= ~IFF_OACTIVE; 500 501 /* 502 * Send setup messages so that the rx/tx locic starts. 503 */ 504 ni_setup(sc); 505 506 } 507 508 /* 509 * Start output on interface. 510 */ 511 void 512 nistart(ifp) 513 struct ifnet *ifp; 514 { 515 struct ni_softc *sc = ifp->if_softc; 516 struct ni_dg *data; 517 struct ni_bbd *bdp; 518 struct mbuf *m, *m0; 519 int i, cnt, res, mlen; 520 521 if (ifp->if_flags & IFF_OACTIVE) 522 return; 523 #ifdef DEBUG 524 if (ifp->if_flags & IFF_DEBUG) 525 printf("%s: nistart\n", sc->sc_dev.dv_xname); 526 #endif 527 528 while (fqb->nf_dforw) { 529 IFQ_POLL(&ifp->if_snd, m); 530 if (m == 0) 531 break; 532 533 data = REMQHI(&fqb->nf_dforw); 534 if ((int)data == Q_EMPTY) { 535 ifp->if_flags |= IFF_OACTIVE; 536 break; 537 } 538 539 IFQ_DEQUEUE(&ifp->if_snd, m); 540 541 /* 542 * Count number of mbufs in chain. 543 * Always do DMA directly from mbufs, therefore the transmit 544 * ring is really big. 545 */ 546 for (m0 = m, cnt = 0; m0; m0 = m0->m_next) 547 if (m0->m_len) 548 cnt++; 549 if (cnt > NTXFRAGS) 550 panic("nistart"); /* XXX */ 551 552 #if NBPFILTER > 0 553 if (ifp->if_bpf) 554 bpf_mtap(ifp->if_bpf, m); 555 #endif 556 bdp = &bbd[(data->bufs[0]._index & 0x7fff)]; 557 for (m0 = m, i = 0, mlen = 0; m0; m0 = m0->m_next) { 558 if (m0->m_len == 0) 559 continue; 560 bdp->nb_status = (mtod(m0, u_int32_t) & NIBD_OFFSET) | 561 NIBD_VALID; 562 bdp->nb_pte = (u_int32_t)kvtopte(mtod(m0, void *)); 563 bdp->nb_len = m0->m_len; 564 data->bufs[i]._offset = 0; 565 data->bufs[i]._len = bdp->nb_len; 566 data->bufs[i]._index |= NIDG_CHAIN; 567 mlen += bdp->nb_len; 568 bdp++; 569 i++; 570 } 571 data->nd_opcode = BVP_DGRAM; 572 data->nd_pad3 = 1; 573 data->nd_ptdbidx = 1; 574 data->nd_len = 10 + i * 8; 575 data->bufs[i - 1]._index &= ~NIDG_CHAIN; 576 data->nd_cmdref = (u_int32_t)m; 577 #ifdef DEBUG 578 if (ifp->if_flags & IFF_DEBUG) 579 printf("%s: sending %d bytes (%d segments)\n", 580 sc->sc_dev.dv_xname, mlen, i); 581 #endif 582 583 res = INSQTI(data, &gvp->nc_forw0); 584 if (res == Q_EMPTY) { 585 WAITREG(NI_PCR, PCR_OWN); 586 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 587 } 588 } 589 } 590 591 void 592 niintr(void *arg) 593 { 594 struct ni_softc *sc = arg; 595 struct ni_dg *data; 596 struct ni_msg *msg; 597 struct ifnet *ifp = &sc->sc_if; 598 struct ni_bbd *bd; 599 struct mbuf *m; 600 int idx, res; 601 602 if ((NI_RREG(NI_PSR) & PSR_STATE) != PSR_ENABLED) 603 return; 604 605 if ((NI_RREG(NI_PSR) & PSR_ERR)) 606 printf("%s: PSR %x\n", sc->sc_dev.dv_xname, NI_RREG(NI_PSR)); 607 608 KERNEL_LOCK(LK_CANRECURSE|LK_EXCLUSIVE); 609 /* Got any response packets? */ 610 while ((NI_RREG(NI_PSR) & PSR_RSQ) && (data = REMQHI(&gvp->nc_forwr))) { 611 612 switch (data->nd_opcode) { 613 case BVP_DGRAMRX: /* Receive datagram */ 614 idx = data->bufs[0]._index; 615 bd = &bbd[idx]; 616 m = (void *)data->nd_cmdref; 617 m->m_pkthdr.len = m->m_len = 618 data->bufs[0]._len - ETHER_CRC_LEN; 619 m->m_pkthdr.rcvif = ifp; 620 if (ni_add_rxbuf(sc, data, idx)) { 621 bd->nb_len = (m->m_ext.ext_size - 2); 622 bd->nb_pte = 623 (long)kvtopte(m->m_ext.ext_buf); 624 bd->nb_status = 2 | NIBD_VALID; 625 bd->nb_key = 1; 626 } 627 data->nd_len = RXADD; 628 data->nd_status = 0; 629 res = INSQTI(data, &fqb->nf_rforw); 630 if (res == Q_EMPTY) { 631 WAITREG(NI_PCR, PCR_OWN); 632 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_RFREEQ|PCR_OWN); 633 } 634 if (m == (void *)data->nd_cmdref) 635 break; /* Out of mbufs */ 636 637 #if NBPFILTER > 0 638 if (ifp->if_bpf) 639 bpf_mtap(ifp->if_bpf, m); 640 #endif 641 (*ifp->if_input)(ifp, m); 642 break; 643 644 case BVP_DGRAM: 645 m = (struct mbuf *)data->nd_cmdref; 646 ifp->if_flags &= ~IFF_OACTIVE; 647 m_freem(m); 648 res = INSQTI(data, &fqb->nf_dforw); 649 if (res == Q_EMPTY) { 650 WAITREG(NI_PCR, PCR_OWN); 651 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_DFREEQ|PCR_OWN); 652 } 653 break; 654 655 case BVP_MSGRX: 656 msg = (struct ni_msg *)data; 657 switch (msg->nm_opcode2) { 658 case NI_WPARAM: 659 memcpy(sc->sc_enaddr, ((struct ni_param *)&msg->nm_text[0])->np_dpa, ETHER_ADDR_LEN); 660 endwait = 1; 661 break; 662 663 case NI_RCCNTR: 664 case NI_CLPTDB: 665 case NI_STPTDB: 666 break; 667 668 default: 669 printf("Unkn resp %d\n", 670 msg->nm_opcode2); 671 break; 672 } 673 res = INSQTI(data, &fqb->nf_mforw); 674 if (res == Q_EMPTY) { 675 WAITREG(NI_PCR, PCR_OWN); 676 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_MFREEQ|PCR_OWN); 677 } 678 break; 679 680 default: 681 printf("Unknown opcode %d\n", data->nd_opcode); 682 res = INSQTI(data, &fqb->nf_mforw); 683 if (res == Q_EMPTY) { 684 WAITREG(NI_PCR, PCR_OWN); 685 NI_WREG(NI_PCR, PCR_FREEQNE|PCR_MFREEQ|PCR_OWN); 686 } 687 } 688 } 689 690 /* Try to kick on the start routine again */ 691 nistart(ifp); 692 693 NI_WREG(NI_PSR, NI_RREG(NI_PSR) & ~(PSR_OWN|PSR_RSQ)); 694 KERNEL_UNLOCK(); 695 } 696 697 /* 698 * Process an ioctl request. 699 */ 700 int 701 niioctl(ifp, cmd, data) 702 register struct ifnet *ifp; 703 u_long cmd; 704 caddr_t data; 705 { 706 struct ni_softc *sc = ifp->if_softc; 707 struct ifreq *ifr = (struct ifreq *)data; 708 struct ifaddr *ifa = (struct ifaddr *)data; 709 int s = splnet(), error = 0; 710 711 switch (cmd) { 712 713 case SIOCSIFADDR: 714 ifp->if_flags |= IFF_UP; 715 switch(ifa->ifa_addr->sa_family) { 716 #ifdef INET 717 case AF_INET: 718 niinit(sc); 719 arp_ifinit(ifp, ifa); 720 break; 721 #endif 722 } 723 break; 724 725 case SIOCSIFFLAGS: 726 if ((ifp->if_flags & IFF_UP) == 0 && 727 (ifp->if_flags & IFF_RUNNING) != 0) { 728 /* 729 * If interface is marked down and it is running, 730 * stop it. 731 */ 732 ifp->if_flags &= ~IFF_RUNNING; 733 ni_setup(sc); 734 } else if ((ifp->if_flags & IFF_UP) != 0 && 735 (ifp->if_flags & IFF_RUNNING) == 0) { 736 /* 737 * If interface it marked up and it is stopped, then 738 * start it. 739 */ 740 niinit(sc); 741 } else if ((ifp->if_flags & IFF_UP) != 0) { 742 /* 743 * Send a new setup packet to match any new changes. 744 * (Like IFF_PROMISC etc) 745 */ 746 ni_setup(sc); 747 } 748 break; 749 750 case SIOCADDMULTI: 751 case SIOCDELMULTI: 752 /* 753 * Update our multicast list. 754 */ 755 error = (cmd == SIOCADDMULTI) ? 756 ether_addmulti(ifr, &sc->sc_ec): 757 ether_delmulti(ifr, &sc->sc_ec); 758 759 if (error == ENETRESET) { 760 /* 761 * Multicast list has changed; set the hardware filter 762 * accordingly. 763 */ 764 ni_setup(sc); 765 error = 0; 766 } 767 break; 768 769 default: 770 error = EINVAL; 771 772 } 773 splx(s); 774 return (error); 775 } 776 777 /* 778 * Add a receive buffer to the indicated descriptor. 779 */ 780 int 781 ni_add_rxbuf(struct ni_softc *sc, struct ni_dg *data, int idx) 782 { 783 struct ni_bbd *bd = &bbd[idx]; 784 struct mbuf *m; 785 786 MGETHDR(m, M_DONTWAIT, MT_DATA); 787 if (m == NULL) 788 return (ENOBUFS); 789 790 MCLGET(m, M_DONTWAIT); 791 if ((m->m_flags & M_EXT) == 0) { 792 m_freem(m); 793 return (ENOBUFS); 794 } 795 796 m->m_data += 2; 797 bd->nb_len = (m->m_ext.ext_size - 2); 798 bd->nb_pte = (long)kvtopte(m->m_ext.ext_buf); 799 bd->nb_status = 2 | NIBD_VALID; 800 bd->nb_key = 1; 801 802 data->bufs[0]._offset = 0; 803 data->bufs[0]._len = bd->nb_len; 804 data->bufs[0]._index = idx; 805 data->nd_cmdref = (long)m; 806 807 return (0); 808 } 809 810 /* 811 * Create setup packet and put in queue for sending. 812 */ 813 void 814 ni_setup(struct ni_softc *sc) 815 { 816 struct ifnet *ifp = &sc->sc_if; 817 struct ni_msg *msg; 818 struct ni_ptdb *ptdb; 819 struct ether_multi *enm; 820 struct ether_multistep step; 821 int i, res; 822 823 msg = REMQHI(&fqb->nf_mforw); 824 if ((int)msg == Q_EMPTY) 825 return; /* What to do? */ 826 827 ptdb = (struct ni_ptdb *)&msg->nm_text[0]; 828 memset(ptdb, 0, sizeof(struct ni_ptdb)); 829 830 msg->nm_opcode = BVP_MSG; 831 msg->nm_len = 18; 832 ptdb->np_index = 2; /* definition type index */ 833 ptdb->np_fque = 2; /* Free queue */ 834 if (ifp->if_flags & IFF_RUNNING) { 835 msg->nm_opcode2 = NI_STPTDB; 836 ptdb->np_type = ETHERTYPE_IP; 837 ptdb->np_flags = PTDB_UNKN|PTDB_BDC; 838 if (ifp->if_flags & IFF_PROMISC) 839 ptdb->np_flags |= PTDB_PROMISC; 840 memset(ptdb->np_mcast[0], 0xff, ETHER_ADDR_LEN); /* Broadcast */ 841 ptdb->np_adrlen = 1; 842 msg->nm_len += 8; 843 ifp->if_flags &= ~IFF_ALLMULTI; 844 if ((ifp->if_flags & IFF_PROMISC) == 0) { 845 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 846 i = 1; 847 while (enm != NULL) { 848 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 6)) { 849 ifp->if_flags |= IFF_ALLMULTI; 850 ptdb->np_flags |= PTDB_AMC; 851 break; 852 } 853 msg->nm_len += 8; 854 ptdb->np_adrlen++; 855 memcpy(ptdb->np_mcast[i++], enm->enm_addrlo, 856 ETHER_ADDR_LEN); 857 ETHER_NEXT_MULTI(step, enm); 858 } 859 } 860 } else 861 msg->nm_opcode2 = NI_CLPTDB; 862 863 res = INSQTI(msg, &gvp->nc_forw0); 864 if (res == Q_EMPTY) { 865 WAITREG(NI_PCR, PCR_OWN); 866 NI_WREG(NI_PCR, PCR_CMDQNE|PCR_CMDQ0|PCR_OWN); 867 } 868 } 869 870 /* 871 * Check for dead transmit logic. Not uncommon. 872 */ 873 void 874 nitimeout(ifp) 875 struct ifnet *ifp; 876 { 877 #if 0 878 struct ni_softc *sc = ifp->if_softc; 879 880 if (sc->sc_inq == 0) 881 return; 882 883 printf("%s: xmit logic died, resetting...\n", sc->sc_dev.dv_xname); 884 /* 885 * Do a reset of interface, to get it going again. 886 * Will it work by just restart the transmit logic? 887 */ 888 niinit(sc); 889 #endif 890 } 891 892 /* 893 * Shutdown hook. Make sure the interface is stopped at reboot. 894 */ 895 void 896 ni_shutdown(arg) 897 void *arg; 898 { 899 struct ni_softc *sc = arg; 900 901 WAITREG(NI_PCR, PCR_OWN); 902 NI_WREG(NI_PCR, PCR_OWN|PCR_SHUTDOWN); 903 WAITREG(NI_PCR, PCR_OWN); 904 WAITREG(NI_PSR, PSR_OWN); 905 906 } 907
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