| 1 | /* $NetBSD: am79900.c,v 1.24 2015/04/13 16:33:24 riastradh Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1997 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Jason R. Thorpe. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /*- |
| 33 | * Copyright (c) 1992, 1993 |
| 34 | * The Regents of the University of California. All rights reserved. |
| 35 | * |
| 36 | * This code is derived from software contributed to Berkeley by |
| 37 | * Ralph Campbell and Rick Macklem. |
| 38 | * |
| 39 | * Redistribution and use in source and binary forms, with or without |
| 40 | * modification, are permitted provided that the following conditions |
| 41 | * are met: |
| 42 | * 1. Redistributions of source code must retain the above copyright |
| 43 | * notice, this list of conditions and the following disclaimer. |
| 44 | * 2. Redistributions in binary form must reproduce the above copyright |
| 45 | * notice, this list of conditions and the following disclaimer in the |
| 46 | * documentation and/or other materials provided with the distribution. |
| 47 | * 3. Neither the name of the University nor the names of its contributors |
| 48 | * may be used to endorse or promote products derived from this software |
| 49 | * without specific prior written permission. |
| 50 | * |
| 51 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 52 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 53 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 54 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 55 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 56 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 57 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 58 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 59 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 60 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 61 | * SUCH DAMAGE. |
| 62 | * |
| 63 | * @(#)if_le.c 8.2 (Berkeley) 11/16/93 |
| 64 | */ |
| 65 | |
| 66 | /*- |
| 67 | * Copyright (c) 1998 |
| 68 | * Matthias Drochner. All rights reserved. |
| 69 | * Copyright (c) 1995 Charles M. Hannum. All rights reserved. |
| 70 | * |
| 71 | * This code is derived from software contributed to Berkeley by |
| 72 | * Ralph Campbell and Rick Macklem. |
| 73 | * |
| 74 | * Redistribution and use in source and binary forms, with or without |
| 75 | * modification, are permitted provided that the following conditions |
| 76 | * are met: |
| 77 | * 1. Redistributions of source code must retain the above copyright |
| 78 | * notice, this list of conditions and the following disclaimer. |
| 79 | * 2. Redistributions in binary form must reproduce the above copyright |
| 80 | * notice, this list of conditions and the following disclaimer in the |
| 81 | * documentation and/or other materials provided with the distribution. |
| 82 | * 3. All advertising materials mentioning features or use of this software |
| 83 | * must display the following acknowledgement: |
| 84 | * This product includes software developed by the University of |
| 85 | * California, Berkeley and its contributors. |
| 86 | * 4. Neither the name of the University nor the names of its contributors |
| 87 | * may be used to endorse or promote products derived from this software |
| 88 | * without specific prior written permission. |
| 89 | * |
| 90 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 91 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 92 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 93 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 94 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 95 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 96 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 97 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 98 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 99 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 100 | * SUCH DAMAGE. |
| 101 | * |
| 102 | * @(#)if_le.c 8.2 (Berkeley) 11/16/93 |
| 103 | */ |
| 104 | |
| 105 | #include <sys/cdefs.h> |
| 106 | __KERNEL_RCSID(0, "$NetBSD: am79900.c,v 1.24 2015/04/13 16:33:24 riastradh Exp $" ); |
| 107 | |
| 108 | #include <sys/param.h> |
| 109 | #include <sys/systm.h> |
| 110 | #include <sys/mbuf.h> |
| 111 | #include <sys/syslog.h> |
| 112 | #include <sys/socket.h> |
| 113 | #include <sys/device.h> |
| 114 | #include <sys/malloc.h> |
| 115 | #include <sys/ioctl.h> |
| 116 | #include <sys/errno.h> |
| 117 | #include <sys/rndsource.h> |
| 118 | |
| 119 | #include <net/if.h> |
| 120 | #include <net/if_dl.h> |
| 121 | #include <net/if_ether.h> |
| 122 | #include <net/if_media.h> |
| 123 | |
| 124 | #include <net/bpf.h> |
| 125 | #include <net/bpfdesc.h> |
| 126 | |
| 127 | #include <dev/ic/lancereg.h> |
| 128 | #include <dev/ic/lancevar.h> |
| 129 | #include <dev/ic/am79900reg.h> |
| 130 | #include <dev/ic/am79900var.h> |
| 131 | |
| 132 | static void am79900_meminit(struct lance_softc *); |
| 133 | static void am79900_start(struct ifnet *); |
| 134 | |
| 135 | #if defined(_KERNEL_OPT) |
| 136 | #include "opt_ddb.h" |
| 137 | #endif |
| 138 | |
| 139 | #ifdef LEDEBUG |
| 140 | static void am79900_recv_print(struct lance_softc *, int); |
| 141 | static void am79900_xmit_print(struct lance_softc *, int); |
| 142 | #endif |
| 143 | |
| 144 | #define ifp (&sc->sc_ethercom.ec_if) |
| 145 | |
| 146 | void |
| 147 | am79900_config(struct am79900_softc *sc) |
| 148 | { |
| 149 | int mem, i; |
| 150 | |
| 151 | sc->lsc.sc_meminit = am79900_meminit; |
| 152 | sc->lsc.sc_start = am79900_start; |
| 153 | |
| 154 | lance_config(&sc->lsc); |
| 155 | |
| 156 | mem = 0; |
| 157 | sc->lsc.sc_initaddr = mem; |
| 158 | mem += sizeof(struct leinit); |
| 159 | sc->lsc.sc_rmdaddr = mem; |
| 160 | mem += sizeof(struct lermd) * sc->lsc.sc_nrbuf; |
| 161 | sc->lsc.sc_tmdaddr = mem; |
| 162 | mem += sizeof(struct letmd) * sc->lsc.sc_ntbuf; |
| 163 | for (i = 0; i < sc->lsc.sc_nrbuf; i++, mem += LEBLEN) |
| 164 | sc->lsc.sc_rbufaddr[i] = mem; |
| 165 | for (i = 0; i < sc->lsc.sc_ntbuf; i++, mem += LEBLEN) |
| 166 | sc->lsc.sc_tbufaddr[i] = mem; |
| 167 | |
| 168 | if (mem > sc->lsc.sc_memsize) |
| 169 | panic("%s: memsize" , device_xname(sc->lsc.sc_dev)); |
| 170 | } |
| 171 | |
| 172 | /* |
| 173 | * Set up the initialization block and the descriptor rings. |
| 174 | */ |
| 175 | static void |
| 176 | am79900_meminit(struct lance_softc *sc) |
| 177 | { |
| 178 | u_long a; |
| 179 | int bix; |
| 180 | struct leinit init; |
| 181 | struct lermd rmd; |
| 182 | struct letmd tmd; |
| 183 | uint8_t *myaddr; |
| 184 | |
| 185 | if (ifp->if_flags & IFF_PROMISC) |
| 186 | init.init_mode = LE_MODE_NORMAL | LE_MODE_PROM; |
| 187 | else |
| 188 | init.init_mode = LE_MODE_NORMAL; |
| 189 | if (sc->sc_initmodemedia == 1) |
| 190 | init.init_mode |= LE_MODE_PSEL0; |
| 191 | |
| 192 | init.init_mode |= ((ffs(sc->sc_ntbuf) - 1) << 28) |
| 193 | | ((ffs(sc->sc_nrbuf) - 1) << 20); |
| 194 | |
| 195 | /* |
| 196 | * Update our private copy of the Ethernet address. |
| 197 | * We NEED the copy so we can ensure its alignment! |
| 198 | */ |
| 199 | memcpy(sc->sc_enaddr, CLLADDR(ifp->if_sadl), ETHER_ADDR_LEN); |
| 200 | myaddr = sc->sc_enaddr; |
| 201 | |
| 202 | init.init_padr[0] = myaddr[0] | (myaddr[1] << 8) |
| 203 | | (myaddr[2] << 16) | (myaddr[3] << 24); |
| 204 | init.init_padr[1] = myaddr[4] | (myaddr[5] << 8); |
| 205 | lance_setladrf(&sc->sc_ethercom, init.init_ladrf); |
| 206 | |
| 207 | sc->sc_last_rd = 0; |
| 208 | sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0; |
| 209 | |
| 210 | a = sc->sc_addr + LE_RMDADDR(sc, 0); |
| 211 | init.init_rdra = a; |
| 212 | |
| 213 | a = sc->sc_addr + LE_TMDADDR(sc, 0); |
| 214 | init.init_tdra = a; |
| 215 | |
| 216 | (*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init)); |
| 217 | |
| 218 | /* |
| 219 | * Set up receive ring descriptors. |
| 220 | */ |
| 221 | for (bix = 0; bix < sc->sc_nrbuf; bix++) { |
| 222 | a = sc->sc_addr + LE_RBUFADDR(sc, bix); |
| 223 | rmd.rmd0 = a; |
| 224 | rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff); |
| 225 | rmd.rmd2 = 0; |
| 226 | rmd.rmd3 = 0; |
| 227 | (*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix), |
| 228 | sizeof(rmd)); |
| 229 | } |
| 230 | |
| 231 | /* |
| 232 | * Set up transmit ring descriptors. |
| 233 | */ |
| 234 | for (bix = 0; bix < sc->sc_ntbuf; bix++) { |
| 235 | a = sc->sc_addr + LE_TBUFADDR(sc, bix); |
| 236 | tmd.tmd0 = a; |
| 237 | tmd.tmd1 = LE_T1_ONES; |
| 238 | tmd.tmd2 = 0; |
| 239 | tmd.tmd3 = 0; |
| 240 | (*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix), |
| 241 | sizeof(tmd)); |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | static inline void |
| 246 | am79900_rint(struct lance_softc *sc) |
| 247 | { |
| 248 | int bix; |
| 249 | int rp; |
| 250 | struct lermd rmd; |
| 251 | |
| 252 | bix = sc->sc_last_rd; |
| 253 | |
| 254 | /* Process all buffers with valid data. */ |
| 255 | for (;;) { |
| 256 | rp = LE_RMDADDR(sc, bix); |
| 257 | (*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd)); |
| 258 | |
| 259 | if (rmd.rmd1 & LE_R1_OWN) |
| 260 | break; |
| 261 | |
| 262 | if (rmd.rmd1 & LE_R1_ERR) { |
| 263 | if (rmd.rmd1 & LE_R1_ENP) { |
| 264 | #ifdef LEDEBUG |
| 265 | if ((rmd.rmd1 & LE_R1_OFLO) == 0) { |
| 266 | if (rmd.rmd1 & LE_R1_FRAM) |
| 267 | printf("%s: framing error\n" , |
| 268 | device_xname(sc->sc_dev)); |
| 269 | if (rmd.rmd1 & LE_R1_CRC) |
| 270 | printf("%s: crc mismatch\n" , |
| 271 | device_xname(sc->sc_dev)); |
| 272 | } |
| 273 | #endif |
| 274 | } else { |
| 275 | if (rmd.rmd1 & LE_R1_OFLO) |
| 276 | printf("%s: overflow\n" , |
| 277 | device_xname(sc->sc_dev)); |
| 278 | } |
| 279 | if (rmd.rmd1 & LE_R1_BUFF) |
| 280 | printf("%s: receive buffer error\n" , |
| 281 | device_xname(sc->sc_dev)); |
| 282 | ifp->if_ierrors++; |
| 283 | } else if ((rmd.rmd1 & (LE_R1_STP | LE_R1_ENP)) != |
| 284 | (LE_R1_STP | LE_R1_ENP)) { |
| 285 | printf("%s: dropping chained buffer\n" , |
| 286 | device_xname(sc->sc_dev)); |
| 287 | ifp->if_ierrors++; |
| 288 | } else { |
| 289 | #ifdef LEDEBUG |
| 290 | if (sc->sc_debug) |
| 291 | am79900_recv_print(sc, sc->sc_last_rd); |
| 292 | #endif |
| 293 | lance_read(sc, LE_RBUFADDR(sc, bix), |
| 294 | (rmd.rmd2 & 0xfff) - 4); |
| 295 | } |
| 296 | |
| 297 | rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff); |
| 298 | rmd.rmd2 = 0; |
| 299 | rmd.rmd3 = 0; |
| 300 | (*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd)); |
| 301 | |
| 302 | #ifdef LEDEBUG |
| 303 | if (sc->sc_debug) |
| 304 | printf("sc->sc_last_rd = %x, rmd: " |
| 305 | "adr %08x, flags/blen %08x\n" , |
| 306 | sc->sc_last_rd, |
| 307 | rmd.rmd0, rmd.rmd1); |
| 308 | #endif |
| 309 | |
| 310 | if (++bix == sc->sc_nrbuf) |
| 311 | bix = 0; |
| 312 | } |
| 313 | |
| 314 | sc->sc_last_rd = bix; |
| 315 | } |
| 316 | |
| 317 | static inline void |
| 318 | am79900_tint(struct lance_softc *sc) |
| 319 | { |
| 320 | int bix; |
| 321 | struct letmd tmd; |
| 322 | |
| 323 | bix = sc->sc_first_td; |
| 324 | |
| 325 | for (;;) { |
| 326 | if (sc->sc_no_td <= 0) |
| 327 | break; |
| 328 | |
| 329 | (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix), |
| 330 | sizeof(tmd)); |
| 331 | |
| 332 | #ifdef LEDEBUG |
| 333 | if (sc->sc_debug) |
| 334 | printf("trans tmd: " |
| 335 | "adr %08x, flags/blen %08x\n" , |
| 336 | tmd.tmd0, tmd.tmd1); |
| 337 | #endif |
| 338 | |
| 339 | if (tmd.tmd1 & LE_T1_OWN) |
| 340 | break; |
| 341 | |
| 342 | ifp->if_flags &= ~IFF_OACTIVE; |
| 343 | |
| 344 | if (tmd.tmd1 & LE_T1_ERR) { |
| 345 | if (tmd.tmd2 & LE_T2_BUFF) |
| 346 | printf("%s: transmit buffer error\n" , |
| 347 | device_xname(sc->sc_dev)); |
| 348 | else if (tmd.tmd2 & LE_T2_UFLO) |
| 349 | printf("%s: underflow\n" , |
| 350 | device_xname(sc->sc_dev)); |
| 351 | if (tmd.tmd2 & (LE_T2_BUFF | LE_T2_UFLO)) { |
| 352 | lance_reset(sc); |
| 353 | return; |
| 354 | } |
| 355 | if (tmd.tmd2 & LE_T2_LCAR) { |
| 356 | sc->sc_havecarrier = 0; |
| 357 | if (sc->sc_nocarrier) |
| 358 | (*sc->sc_nocarrier)(sc); |
| 359 | else |
| 360 | printf("%s: lost carrier\n" , |
| 361 | device_xname(sc->sc_dev)); |
| 362 | } |
| 363 | if (tmd.tmd2 & LE_T2_LCOL) |
| 364 | ifp->if_collisions++; |
| 365 | if (tmd.tmd2 & LE_T2_RTRY) { |
| 366 | #ifdef LEDEBUG |
| 367 | printf("%s: excessive collisions\n" , |
| 368 | device_xname(sc->sc_dev)); |
| 369 | #endif |
| 370 | ifp->if_collisions += 16; |
| 371 | } |
| 372 | ifp->if_oerrors++; |
| 373 | } else { |
| 374 | if (tmd.tmd1 & LE_T1_ONE) |
| 375 | ifp->if_collisions++; |
| 376 | else if (tmd.tmd1 & LE_T1_MORE) |
| 377 | /* Real number is unknown. */ |
| 378 | ifp->if_collisions += 2; |
| 379 | ifp->if_opackets++; |
| 380 | } |
| 381 | |
| 382 | if (++bix == sc->sc_ntbuf) |
| 383 | bix = 0; |
| 384 | |
| 385 | --sc->sc_no_td; |
| 386 | } |
| 387 | |
| 388 | sc->sc_first_td = bix; |
| 389 | |
| 390 | am79900_start(ifp); |
| 391 | |
| 392 | if (sc->sc_no_td == 0) |
| 393 | ifp->if_timer = 0; |
| 394 | } |
| 395 | |
| 396 | /* |
| 397 | * Controller interrupt. |
| 398 | */ |
| 399 | int |
| 400 | am79900_intr(void *arg) |
| 401 | { |
| 402 | struct lance_softc *sc = arg; |
| 403 | uint16_t isr; |
| 404 | |
| 405 | isr = (*sc->sc_rdcsr)(sc, LE_CSR0) | sc->sc_saved_csr0; |
| 406 | sc->sc_saved_csr0 = 0; |
| 407 | #if defined(LEDEBUG) && LEDEBUG > 1 |
| 408 | if (sc->sc_debug) |
| 409 | printf("%s: am79900_intr entering with isr=%04x\n" , |
| 410 | device_xname(sc->sc_dev), isr); |
| 411 | #endif |
| 412 | if ((isr & LE_C0_INTR) == 0) |
| 413 | return (0); |
| 414 | |
| 415 | (*sc->sc_wrcsr)(sc, LE_CSR0, |
| 416 | isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR | |
| 417 | LE_C0_RINT | LE_C0_TINT | LE_C0_IDON)); |
| 418 | if (isr & LE_C0_ERR) { |
| 419 | if (isr & LE_C0_BABL) { |
| 420 | #ifdef LEDEBUG |
| 421 | printf("%s: babble\n" , device_xname(sc->sc_dev)); |
| 422 | #endif |
| 423 | ifp->if_oerrors++; |
| 424 | } |
| 425 | #if 0 |
| 426 | if (isr & LE_C0_CERR) { |
| 427 | printf("%s: collision error\n" , |
| 428 | device_xname(sc->sc_dev)); |
| 429 | ifp->if_collisions++; |
| 430 | } |
| 431 | #endif |
| 432 | if (isr & LE_C0_MISS) { |
| 433 | #ifdef LEDEBUG |
| 434 | printf("%s: missed packet\n" , device_xname(sc->sc_dev)); |
| 435 | #endif |
| 436 | ifp->if_ierrors++; |
| 437 | } |
| 438 | if (isr & LE_C0_MERR) { |
| 439 | printf("%s: memory error\n" , device_xname(sc->sc_dev)); |
| 440 | lance_reset(sc); |
| 441 | return (1); |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | if ((isr & LE_C0_RXON) == 0) { |
| 446 | printf("%s: receiver disabled\n" , device_xname(sc->sc_dev)); |
| 447 | ifp->if_ierrors++; |
| 448 | lance_reset(sc); |
| 449 | return (1); |
| 450 | } |
| 451 | if ((isr & LE_C0_TXON) == 0) { |
| 452 | printf("%s: transmitter disabled\n" , device_xname(sc->sc_dev)); |
| 453 | ifp->if_oerrors++; |
| 454 | lance_reset(sc); |
| 455 | return (1); |
| 456 | } |
| 457 | |
| 458 | /* |
| 459 | * Pretend we have carrier; if we don't this will be cleared |
| 460 | * shortly. |
| 461 | */ |
| 462 | sc->sc_havecarrier = 1; |
| 463 | |
| 464 | if (isr & LE_C0_RINT) |
| 465 | am79900_rint(sc); |
| 466 | if (isr & LE_C0_TINT) |
| 467 | am79900_tint(sc); |
| 468 | |
| 469 | rnd_add_uint32(&sc->rnd_source, isr); |
| 470 | |
| 471 | return (1); |
| 472 | } |
| 473 | |
| 474 | #undef ifp |
| 475 | |
| 476 | /* |
| 477 | * Setup output on interface. |
| 478 | * Get another datagram to send off of the interface queue, and map it to the |
| 479 | * interface before starting the output. |
| 480 | * Called only at splnet or interrupt level. |
| 481 | */ |
| 482 | static void |
| 483 | am79900_start(struct ifnet *ifp) |
| 484 | { |
| 485 | struct lance_softc *sc = ifp->if_softc; |
| 486 | int bix; |
| 487 | struct mbuf *m; |
| 488 | struct letmd tmd; |
| 489 | int rp; |
| 490 | int len; |
| 491 | |
| 492 | if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) |
| 493 | return; |
| 494 | |
| 495 | bix = sc->sc_last_td; |
| 496 | |
| 497 | for (;;) { |
| 498 | rp = LE_TMDADDR(sc, bix); |
| 499 | (*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd)); |
| 500 | |
| 501 | if (tmd.tmd1 & LE_T1_OWN) { |
| 502 | ifp->if_flags |= IFF_OACTIVE; |
| 503 | printf("missing buffer, no_td = %d, last_td = %d\n" , |
| 504 | sc->sc_no_td, sc->sc_last_td); |
| 505 | } |
| 506 | |
| 507 | IFQ_DEQUEUE(&ifp->if_snd, m); |
| 508 | if (m == 0) |
| 509 | break; |
| 510 | |
| 511 | /* |
| 512 | * If BPF is listening on this interface, let it see the packet |
| 513 | * before we commit it to the wire. |
| 514 | */ |
| 515 | bpf_mtap(ifp, m); |
| 516 | |
| 517 | /* |
| 518 | * Copy the mbuf chain into the transmit buffer. |
| 519 | */ |
| 520 | len = lance_put(sc, LE_TBUFADDR(sc, bix), m); |
| 521 | |
| 522 | #ifdef LEDEBUG |
| 523 | if (len > ETHERMTU + sizeof(struct ether_header)) |
| 524 | printf("packet length %d\n" , len); |
| 525 | #endif |
| 526 | |
| 527 | ifp->if_timer = 5; |
| 528 | |
| 529 | /* |
| 530 | * Init transmit registers, and set transmit start flag. |
| 531 | */ |
| 532 | tmd.tmd1 = LE_T1_OWN | LE_T1_STP | LE_T1_ENP | LE_T1_ONES | (-len & 0xfff); |
| 533 | tmd.tmd2 = 0; |
| 534 | tmd.tmd3 = 0; |
| 535 | |
| 536 | (*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd)); |
| 537 | |
| 538 | #ifdef LEDEBUG |
| 539 | if (sc->sc_debug) |
| 540 | am79900_xmit_print(sc, sc->sc_last_td); |
| 541 | #endif |
| 542 | |
| 543 | (*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD); |
| 544 | |
| 545 | if (++bix == sc->sc_ntbuf) |
| 546 | bix = 0; |
| 547 | |
| 548 | if (++sc->sc_no_td == sc->sc_ntbuf) { |
| 549 | ifp->if_flags |= IFF_OACTIVE; |
| 550 | break; |
| 551 | } |
| 552 | |
| 553 | } |
| 554 | |
| 555 | sc->sc_last_td = bix; |
| 556 | } |
| 557 | |
| 558 | #ifdef LEDEBUG |
| 559 | static void |
| 560 | am79900_recv_print(struct lance_softc *sc, int no) |
| 561 | { |
| 562 | struct lermd rmd; |
| 563 | uint16_t len; |
| 564 | struct ether_header eh; |
| 565 | |
| 566 | (*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd)); |
| 567 | len = (rmd.rmd2 & 0xfff) - 4; |
| 568 | printf("%s: receive buffer %d, len = %d\n" , |
| 569 | device_xname(sc->sc_dev), no, len); |
| 570 | printf("%s: status %04x\n" , device_xname(sc->sc_dev), |
| 571 | (*sc->sc_rdcsr)(sc, LE_CSR0)); |
| 572 | printf("%s: adr %08x, flags/blen %08x\n" , |
| 573 | device_xname(sc->sc_dev), rmd.rmd0, rmd.rmd1); |
| 574 | if (len >= sizeof(eh)) { |
| 575 | (*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh)); |
| 576 | printf("%s: dst %s" , device_xname(sc->sc_dev), |
| 577 | ether_sprintf(eh.ether_dhost)); |
| 578 | printf(" src %s type %04x\n" , ether_sprintf(eh.ether_shost), |
| 579 | ntohs(eh.ether_type)); |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | static void |
| 584 | am79900_xmit_print(struct lance_softc *sc, int no) |
| 585 | { |
| 586 | struct letmd tmd; |
| 587 | uint16_t len; |
| 588 | struct ether_header eh; |
| 589 | |
| 590 | (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd)); |
| 591 | len = -(tmd.tmd1 & 0xfff); |
| 592 | printf("%s: transmit buffer %d, len = %d\n" , |
| 593 | device_xname(sc->sc_dev), no, len); |
| 594 | printf("%s: status %04x\n" , device_xname(sc->sc_dev), |
| 595 | (*sc->sc_rdcsr)(sc, LE_CSR0)); |
| 596 | printf("%s: adr %08x, flags/blen %08x\n" , |
| 597 | device_xname(sc->sc_dev), tmd.tmd0, tmd.tmd1); |
| 598 | if (len >= sizeof(eh)) { |
| 599 | (*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh)); |
| 600 | printf("%s: dst %s" , device_xname(sc->sc_dev), |
| 601 | ether_sprintf(eh.ether_dhost)); |
| 602 | printf(" src %s type %04x\n" , ether_sprintf(eh.ether_shost), |
| 603 | ntohs(eh.ether_type)); |
| 604 | } |
| 605 | } |
| 606 | #endif /* LEDEBUG */ |
| 607 | |