1 /* $NetBSD: smc91cxx.c,v 1.88 2014/08/10 16:44:35 tls 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 of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1996 Gardner Buchanan <gbuchanan@shl.com> 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by Gardner Buchanan. 48 * 4. The name of Gardner Buchanan may not be used to endorse or promote 49 * products derived from this software without specific prior written 50 * permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 53 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 54 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 55 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 56 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 57 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 61 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 * from FreeBSD Id: if_sn.c,v 1.4 1996/03/18 15:47:16 gardner Exp 64 */ 65 66 /* 67 * Core driver for the SMC 91Cxx family of Ethernet chips. 68 * 69 * Memory allocation interrupt logic is drived from an SMC 91C90 driver 70 * written for NetBSD/amiga by Michael Hitch. 71 */ 72 73 #include <sys/cdefs.h> 74 __KERNEL_RCSID(0, "$NetBSD: smc91cxx.c,v 1.88 2014/08/10 16:44:35 tls Exp $"); 75 76 #include "opt_inet.h" 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/mbuf.h> 81 #include <sys/syslog.h> 82 #include <sys/socket.h> 83 #include <sys/device.h> 84 #include <sys/kernel.h> 85 #include <sys/malloc.h> 86 #include <sys/ioctl.h> 87 #include <sys/errno.h> 88 #include <sys/rnd.h> 89 90 #include <sys/bus.h> 91 #include <sys/intr.h> 92 93 #include <net/if.h> 94 #include <net/if_dl.h> 95 #include <net/if_ether.h> 96 #include <net/if_media.h> 97 98 #ifdef INET 99 #include <netinet/in.h> 100 #include <netinet/if_inarp.h> 101 #include <netinet/in_systm.h> 102 #include <netinet/in_var.h> 103 #include <netinet/ip.h> 104 #endif 105 106 #include <net/bpf.h> 107 #include <net/bpfdesc.h> 108 109 #include <dev/mii/mii.h> 110 #include <dev/mii/miivar.h> 111 #include <dev/mii/mii_bitbang.h> 112 113 #include <dev/ic/smc91cxxreg.h> 114 #include <dev/ic/smc91cxxvar.h> 115 116 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 117 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 118 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 119 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 120 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 121 122 #define bus_space_write_stream_4 bus_space_write_4 123 #define bus_space_read_stream_4 bus_space_read_4 124 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 125 126 /* XXX Hardware padding doesn't work yet(?) */ 127 #define SMC91CXX_SW_PAD 128 129 const char *smc91cxx_idstrs[] = { 130 NULL, /* 0 */ 131 NULL, /* 1 */ 132 NULL, /* 2 */ 133 "SMC91C90/91C92", /* 3 */ 134 "SMC91C94/91C96", /* 4 */ 135 "SMC91C95", /* 5 */ 136 NULL, /* 6 */ 137 "SMC91C100", /* 7 */ 138 "SMC91C100FD", /* 8 */ 139 "SMC91C111", /* 9 */ 140 NULL, /* 10 */ 141 NULL, /* 11 */ 142 NULL, /* 12 */ 143 NULL, /* 13 */ 144 NULL, /* 14 */ 145 NULL, /* 15 */ 146 }; 147 148 /* Supported media types. */ 149 static const int smc91cxx_media[] = { 150 IFM_ETHER|IFM_10_T, 151 IFM_ETHER|IFM_10_5, 152 }; 153 #define NSMC91CxxMEDIA (sizeof(smc91cxx_media) / sizeof(smc91cxx_media[0])) 154 155 /* 156 * MII bit-bang glue. 157 */ 158 u_int32_t smc91cxx_mii_bitbang_read(device_t); 159 void smc91cxx_mii_bitbang_write(device_t, u_int32_t); 160 161 static const struct mii_bitbang_ops smc91cxx_mii_bitbang_ops = { 162 smc91cxx_mii_bitbang_read, 163 smc91cxx_mii_bitbang_write, 164 { 165 MR_MDO, /* MII_BIT_MDO */ 166 MR_MDI, /* MII_BIT_MDI */ 167 MR_MCLK, /* MII_BIT_MDC */ 168 MR_MDOE, /* MII_BIT_DIR_HOST_PHY */ 169 0, /* MII_BIT_DIR_PHY_HOST */ 170 } 171 }; 172 173 /* MII callbacks */ 174 int smc91cxx_mii_readreg(device_t, int, int); 175 void smc91cxx_mii_writereg(device_t, int, int, int); 176 void smc91cxx_statchg(struct ifnet *); 177 void smc91cxx_tick(void *); 178 179 int smc91cxx_mediachange(struct ifnet *); 180 void smc91cxx_mediastatus(struct ifnet *, struct ifmediareq *); 181 182 int smc91cxx_set_media(struct smc91cxx_softc *, int); 183 184 void smc91cxx_init(struct smc91cxx_softc *); 185 void smc91cxx_read(struct smc91cxx_softc *); 186 void smc91cxx_reset(struct smc91cxx_softc *); 187 void smc91cxx_start(struct ifnet *); 188 uint8_t smc91cxx_copy_tx_frame(struct smc91cxx_softc *, struct mbuf *); 189 void smc91cxx_resume(struct smc91cxx_softc *); 190 void smc91cxx_stop(struct smc91cxx_softc *); 191 void smc91cxx_watchdog(struct ifnet *); 192 int smc91cxx_ioctl(struct ifnet *, u_long, void *); 193 194 static inline int ether_cmp(const void *, const void *); 195 static inline int 196 ether_cmp(const void *va, const void *vb) 197 { 198 const u_int8_t *a = va; 199 const u_int8_t *b = vb; 200 201 return ((a[5] != b[5]) || (a[4] != b[4]) || (a[3] != b[3]) || 202 (a[2] != b[2]) || (a[1] != b[1]) || (a[0] != b[0])); 203 } 204 205 static inline void 206 smc91cxx_intr_mask_write(bus_space_tag_t bst, bus_space_handle_t bsh, 207 uint8_t mask) 208 { 209 KDASSERT((mask & IM_ERCV_INT) == 0); 210 #ifdef SMC91CXX_NO_BYTE_WRITE 211 bus_space_write_2(bst, bsh, INTR_STAT_REG_B, mask << 8); 212 #else 213 bus_space_write_1(bst, bsh, INTR_MASK_REG_B, mask); 214 #endif 215 KDASSERT(!(bus_space_read_1(bst, bsh, INTR_MASK_REG_B) & IM_ERCV_INT)); 216 } 217 218 static inline void 219 smc91cxx_intr_ack_write(bus_space_tag_t bst, bus_space_handle_t bsh, 220 uint8_t ack, uint8_t mask) 221 { 222 #ifdef SMC91CXX_NO_BYTE_WRITE 223 bus_space_write_2(bst, bsh, INTR_ACK_REG_B, ack | (mask << 8)); 224 #else 225 bus_space_write_1(bst, bsh, INTR_ACK_REG_B, ack); 226 #endif 227 KDASSERT(!(bus_space_read_1(bst, bsh, INTR_MASK_REG_B) & IM_ERCV_INT)); 228 } 229 230 void 231 smc91cxx_attach(struct smc91cxx_softc *sc, u_int8_t *myea) 232 { 233 struct ifnet *ifp = &sc->sc_ec.ec_if; 234 bus_space_tag_t bst = sc->sc_bst; 235 bus_space_handle_t bsh = sc->sc_bsh; 236 struct ifmedia *ifm = &sc->sc_mii.mii_media; 237 const char *idstr; 238 u_int32_t miicapabilities; 239 u_int16_t tmp; 240 u_int8_t enaddr[ETHER_ADDR_LEN]; 241 int i, aui, mult, scale, memsize; 242 char pbuf[9]; 243 244 tmp = bus_space_read_2(bst, bsh, BANK_SELECT_REG_W); 245 /* check magic number */ 246 if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE) { 247 aprint_error_dev(sc->sc_dev, 248 "failed to detect chip, bsr=%04x\n", tmp); 249 return; 250 } 251 252 /* Make sure the chip is stopped. */ 253 smc91cxx_stop(sc); 254 255 SMC_SELECT_BANK(sc, 3); 256 tmp = bus_space_read_2(bst, bsh, REVISION_REG_W); 257 sc->sc_chipid = RR_ID(tmp); 258 idstr = smc91cxx_idstrs[sc->sc_chipid]; 259 260 aprint_normal_dev(sc->sc_dev, ""); 261 if (idstr != NULL) 262 aprint_normal("%s, ", idstr); 263 else 264 aprint_normal("unknown chip id %d, ", sc->sc_chipid); 265 aprint_normal("revision %d, ", RR_REV(tmp)); 266 267 SMC_SELECT_BANK(sc, 0); 268 switch (sc->sc_chipid) { 269 default: 270 mult = MCR_MEM_MULT(bus_space_read_2(bst, bsh, MEM_CFG_REG_W)); 271 scale = MIR_SCALE_91C9x; 272 break; 273 274 case CHIP_91C111: 275 mult = MIR_MULT_91C111; 276 scale = MIR_SCALE_91C111; 277 } 278 memsize = bus_space_read_2(bst, bsh, MEM_INFO_REG_W) & MIR_TOTAL_MASK; 279 if (memsize == 255) 280 memsize++; 281 memsize *= scale * mult; 282 283 format_bytes(pbuf, sizeof(pbuf), memsize); 284 aprint_normal("buffer size: %s\n", pbuf); 285 286 /* Read the station address from the chip. */ 287 SMC_SELECT_BANK(sc, 1); 288 if (myea == NULL) { 289 myea = enaddr; 290 for (i = 0; i < ETHER_ADDR_LEN; i += 2) { 291 tmp = bus_space_read_2(bst, bsh, IAR_ADDR0_REG_W + i); 292 myea[i + 1] = (tmp >> 8) & 0xff; 293 myea[i] = tmp & 0xff; 294 } 295 } 296 aprint_normal_dev(sc->sc_dev, "MAC address %s, ", 297 ether_sprintf(myea)); 298 299 /* Initialize the ifnet structure. */ 300 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 301 ifp->if_softc = sc; 302 ifp->if_start = smc91cxx_start; 303 ifp->if_ioctl = smc91cxx_ioctl; 304 ifp->if_watchdog = smc91cxx_watchdog; 305 ifp->if_flags = 306 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 307 IFQ_SET_READY(&ifp->if_snd); 308 309 /* Attach the interface. */ 310 if_attach(ifp); 311 ether_ifattach(ifp, myea); 312 313 /* 314 * Initialize our media structures and MII info. We will 315 * probe the MII if we are on the SMC91Cxx 316 */ 317 sc->sc_mii.mii_ifp = ifp; 318 sc->sc_mii.mii_readreg = smc91cxx_mii_readreg; 319 sc->sc_mii.mii_writereg = smc91cxx_mii_writereg; 320 sc->sc_mii.mii_statchg = smc91cxx_statchg; 321 ifmedia_init(ifm, IFM_IMASK, smc91cxx_mediachange, smc91cxx_mediastatus); 322 323 SMC_SELECT_BANK(sc, 1); 324 tmp = bus_space_read_2(bst, bsh, CONFIG_REG_W); 325 326 miicapabilities = BMSR_MEDIAMASK|BMSR_ANEG; 327 switch (sc->sc_chipid) { 328 case CHIP_91100: 329 /* 330 * The 91100 does not have full-duplex capabilities, 331 * even if the PHY does. 332 */ 333 miicapabilities &= ~(BMSR_100TXFDX | BMSR_10TFDX); 334 /*FALLTHROUGH*/ 335 case CHIP_91100FD: 336 case CHIP_91C111: 337 if (tmp & CR_MII_SELECT) { 338 aprint_normal("default media MII"); 339 if (sc->sc_chipid == CHIP_91C111) { 340 aprint_normal(" (%s PHY)\n", 341 (tmp & CR_AUI_SELECT) ? 342 "external" : "internal"); 343 sc->sc_internal_phy = !(tmp & CR_AUI_SELECT); 344 } else 345 aprint_normal("\n"); 346 mii_attach(sc->sc_dev, &sc->sc_mii, miicapabilities, 347 MII_PHY_ANY, MII_OFFSET_ANY, 0); 348 if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) { 349 ifmedia_add(&sc->sc_mii.mii_media, 350 IFM_ETHER|IFM_NONE, 0, NULL); 351 ifmedia_set(&sc->sc_mii.mii_media, 352 IFM_ETHER|IFM_NONE); 353 } else { 354 ifmedia_set(&sc->sc_mii.mii_media, 355 IFM_ETHER|IFM_AUTO); 356 } 357 sc->sc_flags |= SMC_FLAGS_HAS_MII; 358 break; 359 } else 360 if (sc->sc_chipid == CHIP_91C111) { 361 /* 362 * XXX: Should bring it out of low-power mode 363 */ 364 aprint_normal("EPH interface in low power mode\n"); 365 sc->sc_internal_phy = 0; 366 return; 367 } 368 /*FALLTHROUGH*/ 369 default: 370 aprint_normal("default media %s\n", 371 (aui = (tmp & CR_AUI_SELECT)) ? 372 "AUI" : "UTP"); 373 for (i = 0; i < NSMC91CxxMEDIA; i++) 374 ifmedia_add(ifm, smc91cxx_media[i], 0, NULL); 375 ifmedia_set(ifm, IFM_ETHER | (aui ? IFM_10_5 : IFM_10_T)); 376 break; 377 } 378 379 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 380 RND_TYPE_NET, RND_FLAG_DEFAULT); 381 382 callout_init(&sc->sc_mii_callout, 0); 383 384 /* The attach is successful. */ 385 sc->sc_flags |= SMC_FLAGS_ATTACHED; 386 } 387 388 /* 389 * Change media according to request. 390 */ 391 int 392 smc91cxx_mediachange(struct ifnet *ifp) 393 { 394 struct smc91cxx_softc *sc = ifp->if_softc; 395 396 return (smc91cxx_set_media(sc, sc->sc_mii.mii_media.ifm_media)); 397 } 398 399 int 400 smc91cxx_set_media(struct smc91cxx_softc *sc, int media) 401 { 402 bus_space_tag_t bst = sc->sc_bst; 403 bus_space_handle_t bsh = sc->sc_bsh; 404 u_int16_t tmp; 405 int rc; 406 407 /* 408 * If the interface is not currently powered on, just return. 409 * When it is enabled later, smc91cxx_init() will properly set 410 * up the media for us. 411 */ 412 if ((sc->sc_flags & SMC_FLAGS_ENABLED) == 0) 413 return (0); 414 415 if (IFM_TYPE(media) != IFM_ETHER) 416 return (EINVAL); 417 418 if ((sc->sc_flags & SMC_FLAGS_HAS_MII) == 0 || 419 (rc = mii_mediachg(&sc->sc_mii)) == ENXIO) 420 rc = 0; 421 422 switch (IFM_SUBTYPE(media)) { 423 case IFM_10_T: 424 case IFM_10_5: 425 SMC_SELECT_BANK(sc, 1); 426 tmp = bus_space_read_2(bst, bsh, CONFIG_REG_W); 427 if (IFM_SUBTYPE(media) == IFM_10_5) 428 tmp |= CR_AUI_SELECT; 429 else 430 tmp &= ~CR_AUI_SELECT; 431 bus_space_write_2(bst, bsh, CONFIG_REG_W, tmp); 432 delay(20000); /* XXX is this needed? */ 433 break; 434 435 default: 436 return (EINVAL); 437 } 438 439 return rc; 440 } 441 442 /* 443 * Notify the world which media we're using. 444 */ 445 void 446 smc91cxx_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 447 { 448 struct smc91cxx_softc *sc = ifp->if_softc; 449 bus_space_tag_t bst = sc->sc_bst; 450 bus_space_handle_t bsh = sc->sc_bsh; 451 u_int16_t tmp; 452 453 if ((sc->sc_flags & SMC_FLAGS_ENABLED) == 0) { 454 ifmr->ifm_active = IFM_ETHER | IFM_NONE; 455 ifmr->ifm_status = 0; 456 return; 457 } 458 459 /* 460 * If we have MII, go ask the PHY what's going on. 461 */ 462 if (sc->sc_flags & SMC_FLAGS_HAS_MII) { 463 mii_pollstat(&sc->sc_mii); 464 ifmr->ifm_active = sc->sc_mii.mii_media_active; 465 ifmr->ifm_status = sc->sc_mii.mii_media_status; 466 return; 467 } 468 469 SMC_SELECT_BANK(sc, 1); 470 tmp = bus_space_read_2(bst, bsh, CONFIG_REG_W); 471 ifmr->ifm_active = 472 IFM_ETHER | ((tmp & CR_AUI_SELECT) ? IFM_10_5 : IFM_10_T); 473 } 474 475 /* 476 * Reset and initialize the chip. 477 */ 478 void 479 smc91cxx_init(struct smc91cxx_softc *sc) 480 { 481 struct ifnet *ifp = &sc->sc_ec.ec_if; 482 bus_space_tag_t bst = sc->sc_bst; 483 bus_space_handle_t bsh = sc->sc_bsh; 484 u_int16_t tmp; 485 const u_int8_t *enaddr; 486 int s, i; 487 488 s = splnet(); 489 490 /* 491 * This resets the registers mostly to defaults, but doesn't 492 * affect the EEPROM. The longest reset recovery time of those devices 493 * supported is the 91C111. Section 7.8 of its datasheet asks for 50ms. 494 */ 495 SMC_SELECT_BANK(sc, 0); 496 bus_space_write_2(bst, bsh, RECV_CONTROL_REG_W, RCR_SOFTRESET); 497 delay(5); 498 bus_space_write_2(bst, bsh, RECV_CONTROL_REG_W, 0); 499 delay(50000); 500 501 bus_space_write_2(bst, bsh, TXMIT_CONTROL_REG_W, 0); 502 503 /* Set the Ethernet address. */ 504 SMC_SELECT_BANK(sc, 1); 505 enaddr = (const u_int8_t *)CLLADDR(ifp->if_sadl); 506 for (i = 0; i < ETHER_ADDR_LEN; i += 2) { 507 tmp = enaddr[i + 1] << 8 | enaddr[i]; 508 bus_space_write_2(bst, bsh, IAR_ADDR0_REG_W + i, tmp); 509 } 510 511 /* 512 * Set the control register to automatically release successfully 513 * transmitted packets (making the best use of our limited memory) 514 * and enable the EPH interrupt on certain TX errors. 515 */ 516 bus_space_write_2(bst, bsh, CONTROL_REG_W, (CTR_AUTO_RELEASE | 517 CTR_TE_ENABLE | CTR_CR_ENABLE | CTR_LE_ENABLE)); 518 519 /* 520 * Reset the MMU and wait for it to be un-busy. 521 */ 522 SMC_SELECT_BANK(sc, 2); 523 bus_space_write_2(bst, bsh, MMU_CMD_REG_W, MMUCR_RESET); 524 sc->sc_txpacketno = ARR_FAILED; 525 for (;;) { 526 tmp = bus_space_read_2(bst, bsh, MMU_CMD_REG_W); 527 if (tmp == 0xffff) /* card went away! */ 528 return; 529 if ((tmp & MMUCR_BUSY) == 0) 530 break; 531 } 532 533 /* 534 * Disable all interrupts. 535 */ 536 smc91cxx_intr_mask_write(bst, bsh, 0); 537 538 /* 539 * On the 91c111, enable auto-negotiation, and set the LED 540 * status pins to something sane. 541 * XXX: Should be some way for MD code to decide the latter. 542 */ 543 SMC_SELECT_BANK(sc, 0); 544 if (sc->sc_chipid == CHIP_91C111) { 545 bus_space_write_2(bst, bsh, RX_PHY_CONTROL_REG_W, 546 RPC_ANEG | 547 (RPC_LS_LINK_DETECT << RPC_LSA_SHIFT) | 548 (RPC_LS_TXRX << RPC_LSB_SHIFT)); 549 } 550 551 /* 552 * Set current media. 553 */ 554 smc91cxx_set_media(sc, sc->sc_mii.mii_media.ifm_cur->ifm_media); 555 556 /* 557 * Set the receive filter. We want receive enable and auto 558 * strip of CRC from received packet. If we are in promisc. mode, 559 * then set that bit as well. 560 * 561 * XXX Initialize multicast filter. For now, we just accept 562 * XXX all multicast. 563 */ 564 SMC_SELECT_BANK(sc, 0); 565 566 tmp = RCR_ENABLE | RCR_STRIP_CRC | RCR_ALMUL; 567 if (ifp->if_flags & IFF_PROMISC) 568 tmp |= RCR_PROMISC; 569 570 bus_space_write_2(bst, bsh, RECV_CONTROL_REG_W, tmp); 571 572 /* 573 * Set transmitter control to "enabled". 574 */ 575 tmp = TCR_ENABLE; 576 577 #ifndef SMC91CXX_SW_PAD 578 /* 579 * Enable hardware padding of transmitted packets. 580 * XXX doesn't work? 581 */ 582 tmp |= TCR_PAD_ENABLE; 583 #endif 584 585 bus_space_write_2(bst, bsh, TXMIT_CONTROL_REG_W, tmp); 586 587 /* 588 * Now, enable interrupts. 589 */ 590 SMC_SELECT_BANK(sc, 2); 591 592 sc->sc_intmask = IM_EPH_INT | IM_RX_OVRN_INT | IM_RCV_INT; 593 if (sc->sc_chipid == CHIP_91C111 && sc->sc_internal_phy) { 594 sc->sc_intmask |= IM_MD_INT; 595 } 596 smc91cxx_intr_mask_write(bst, bsh, sc->sc_intmask); 597 598 /* Interface is now running, with no output active. */ 599 ifp->if_flags |= IFF_RUNNING; 600 ifp->if_flags &= ~IFF_OACTIVE; 601 602 if (sc->sc_flags & SMC_FLAGS_HAS_MII) { 603 /* Start the one second clock. */ 604 callout_reset(&sc->sc_mii_callout, hz, smc91cxx_tick, sc); 605 } 606 607 /* 608 * Attempt to start any pending transmission. 609 */ 610 smc91cxx_start(ifp); 611 612 splx(s); 613 } 614 615 /* 616 * Start output on an interface. 617 * Must be called at splnet or interrupt level. 618 */ 619 void 620 smc91cxx_start(struct ifnet *ifp) 621 { 622 struct smc91cxx_softc *sc = ifp->if_softc; 623 bus_space_tag_t bst = sc->sc_bst; 624 bus_space_handle_t bsh = sc->sc_bsh; 625 u_int len; 626 struct mbuf *m; 627 u_int16_t length, npages; 628 u_int16_t oddbyte; 629 u_int8_t packetno; 630 int timo, pad; 631 632 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 633 return; 634 635 again: 636 /* 637 * Peek at the next packet. 638 */ 639 IFQ_POLL(&ifp->if_snd, m); 640 if (m == NULL) 641 return; 642 643 /* 644 * Compute the frame length and set pad to give an overall even 645 * number of bytes. Below, we assume that the packet length 646 * is even. 647 */ 648 for (len = 0; m != NULL; m = m->m_next) 649 len += m->m_len; 650 651 /* 652 * We drop packets that are too large. Perhaps we should 653 * truncate them instead? 654 */ 655 if (len > (ETHER_MAX_LEN - ETHER_CRC_LEN)) { 656 printf("%s: large packet discarded\n", 657 device_xname(sc->sc_dev)); 658 ifp->if_oerrors++; 659 IFQ_DEQUEUE(&ifp->if_snd, m); 660 m_freem(m); 661 goto readcheck; 662 } 663 664 pad = 0; 665 #ifdef SMC91CXX_SW_PAD 666 /* 667 * Not using hardware padding; pad to ETHER_MIN_LEN. 668 */ 669 if (len < (ETHER_MIN_LEN - ETHER_CRC_LEN)) 670 pad = ETHER_MIN_LEN - ETHER_CRC_LEN - len; 671 #endif 672 673 length = pad + len; 674 675 /* 676 * The MMU has a 256 byte page size. The MMU expects us to 677 * ask for "npages - 1". We include space for the status word, 678 * byte count, and control bytes in the allocation request. 679 */ 680 npages = ((length & ~1) + 6) >> 8; 681 682 /* 683 * Now allocate the memory. 684 */ 685 SMC_SELECT_BANK(sc, 2); 686 bus_space_write_2(bst, bsh, MMU_CMD_REG_W, MMUCR_ALLOC | npages); 687 688 timo = MEMORY_WAIT_TIME; 689 if (__predict_false((sc->sc_txpacketno & ARR_FAILED) == 0)) { 690 packetno = sc->sc_txpacketno; 691 sc->sc_txpacketno = ARR_FAILED; 692 } else { 693 do { 694 if (bus_space_read_1(bst, bsh, 695 INTR_STAT_REG_B) & IM_ALLOC_INT) 696 break; 697 delay(1); 698 } while (--timo); 699 } 700 701 packetno = bus_space_read_1(bst, bsh, ALLOC_RESULT_REG_B); 702 703 if (packetno & ARR_FAILED || timo == 0) { 704 /* 705 * No transmit memory is available. Record the number 706 * of requested pages and enable the allocation completion 707 * interrupt. Set up the watchdog timer in case we miss 708 * the interrupt. Mark the interface as active so that 709 * no one else attempts to transmit while we're allocating 710 * memory. 711 */ 712 sc->sc_intmask |= IM_ALLOC_INT; 713 smc91cxx_intr_mask_write(bst, bsh, sc->sc_intmask); 714 ifp->if_timer = 5; 715 ifp->if_flags |= IFF_OACTIVE; 716 717 return; 718 } 719 720 /* 721 * We have a packet number - set the data window. 722 */ 723 bus_space_write_2(bst, bsh, PACKET_NUM_REG_B, packetno); 724 725 /* 726 * Point to the beginning of the packet. 727 */ 728 bus_space_write_2(bst, bsh, POINTER_REG_W, PTR_AUTOINC /* | 0x0000 */); 729 730 /* 731 * Send the packet length (+6 for stats, length, and control bytes) 732 * and the status word (set to zeros). 733 */ 734 bus_space_write_2(bst, bsh, DATA_REG_W, 0); 735 bus_space_write_2(bst, bsh, DATA_REG_W, (length + 6) & 0x7ff); 736 737 /* 738 * Get the packet from the kernel. This will include the Ethernet 739 * frame header, MAC address, etc. 740 */ 741 IFQ_DEQUEUE(&ifp->if_snd, m); 742 743 /* 744 * Push the packet out to the card. The copying function only does 745 * whole words and returns the straggling byte (if any). 746 */ 747 oddbyte = smc91cxx_copy_tx_frame(sc, m); 748 749 #ifdef SMC91CXX_SW_PAD 750 if (pad > 1 && (pad & 1)) { 751 bus_space_write_2(bst, bsh, DATA_REG_W, oddbyte); 752 oddbyte = 0; 753 pad -= 1; 754 } 755 756 /* 757 * Push out padding. 758 */ 759 while (pad > 1) { 760 bus_space_write_2(bst, bsh, DATA_REG_W, 0); 761 pad -= 2; 762 } 763 #endif 764 765 /* 766 * Push out control byte and unused packet byte. The control byte 767 * denotes whether this is an odd or even length packet, and that 768 * no special CRC handling is necessary. 769 */ 770 bus_space_write_2(bst, bsh, DATA_REG_W, 771 oddbyte | ((length & 1) ? (CTLB_ODD << 8) : 0)); 772 773 /* 774 * Enable transmit interrupts and let the chip go. Set a watchdog 775 * in case we miss the interrupt. 776 */ 777 sc->sc_intmask |= IM_TX_INT | IM_TX_EMPTY_INT; 778 smc91cxx_intr_mask_write(bst, bsh, sc->sc_intmask); 779 780 bus_space_write_2(bst, bsh, MMU_CMD_REG_W, MMUCR_ENQUEUE); 781 782 ifp->if_timer = 5; 783 784 /* Hand off a copy to the bpf. */ 785 bpf_mtap(ifp, m); 786 787 ifp->if_opackets++; 788 m_freem(m); 789 790 readcheck: 791 /* 792 * Check for incoming packets. We don't want to overflow the small 793 * RX FIFO. If nothing has arrived, attempt to queue another 794 * transmit packet. 795 */ 796 if (bus_space_read_2(bst, bsh, FIFO_PORTS_REG_W) & FIFO_REMPTY) 797 goto again; 798 } 799 800 /* 801 * Squirt a (possibly misaligned) mbuf to the device 802 */ 803 uint8_t 804 smc91cxx_copy_tx_frame(struct smc91cxx_softc *sc, struct mbuf *m0) 805 { 806 bus_space_tag_t bst = sc->sc_bst; 807 bus_space_handle_t bsh = sc->sc_bsh; 808 struct mbuf *m; 809 int len, leftover; 810 u_int16_t dbuf; 811 u_int8_t *p; 812 #ifdef DIAGNOSTIC 813 u_int8_t *lim; 814 #endif 815 816 /* start out with no leftover data */ 817 leftover = 0; 818 dbuf = 0; 819 820 /* Process the chain of mbufs */ 821 for (m = m0; m != NULL; m = m->m_next) { 822 /* 823 * Process all of the data in a single mbuf. 824 */ 825 p = mtod(m, u_int8_t *); 826 len = m->m_len; 827 #ifdef DIAGNOSTIC 828 lim = p + len; 829 #endif 830 831 while (len > 0) { 832 if (leftover) { 833 /* 834 * Data left over (from mbuf or realignment). 835 * Buffer the next byte, and write it and 836 * the leftover data out. 837 */ 838 dbuf |= *p++ << 8; 839 len--; 840 bus_space_write_2(bst, bsh, DATA_REG_W, dbuf); 841 leftover = 0; 842 } else if ((long) p & 1) { 843 /* 844 * Misaligned data. Buffer the next byte. 845 */ 846 dbuf = *p++; 847 len--; 848 leftover = 1; 849 } else { 850 /* 851 * Aligned data. This is the case we like. 852 * 853 * Write-region out as much as we can, then 854 * buffer the remaining byte (if any). 855 */ 856 leftover = len & 1; 857 len &= ~1; 858 bus_space_write_multi_stream_2(bst, bsh, 859 DATA_REG_W, (u_int16_t *)p, len >> 1); 860 p += len; 861 862 if (leftover) 863 dbuf = *p++; 864 len = 0; 865 } 866 } 867 if (len < 0) 868 panic("smc91cxx_copy_tx_frame: negative len"); 869 #ifdef DIAGNOSTIC 870 if (p != lim) 871 panic("smc91cxx_copy_tx_frame: p != lim"); 872 #endif 873 } 874 875 return dbuf; 876 } 877 878 /* 879 * Interrupt service routine. 880 */ 881 int 882 smc91cxx_intr(void *arg) 883 { 884 struct smc91cxx_softc *sc = arg; 885 struct ifnet *ifp = &sc->sc_ec.ec_if; 886 bus_space_tag_t bst = sc->sc_bst; 887 bus_space_handle_t bsh = sc->sc_bsh; 888 u_int8_t mask, interrupts, status; 889 u_int16_t packetno, tx_status, card_stats; 890 u_int16_t v; 891 892 if ((sc->sc_flags & SMC_FLAGS_ENABLED) == 0 || 893 !device_is_active(sc->sc_dev)) 894 return (0); 895 896 SMC_SELECT_BANK(sc, 2); 897 898 /* 899 * Obtain the current interrupt status and mask. 900 */ 901 v = bus_space_read_2(bst, bsh, INTR_STAT_REG_B); 902 903 /* 904 * Get the set of interrupt which occurred and eliminate any 905 * which are not enabled. 906 */ 907 mask = v >> 8; 908 interrupts = v & 0xff; 909 KDASSERT(mask == sc->sc_intmask); 910 status = interrupts & mask; 911 912 /* Ours? */ 913 if (status == 0) 914 return (0); 915 916 /* 917 * It's ours; disable all interrupts while we process them. 918 */ 919 smc91cxx_intr_mask_write(bst, bsh, 0); 920 921 /* 922 * Receive overrun interrupts. 923 */ 924 if (status & IM_RX_OVRN_INT) { 925 smc91cxx_intr_ack_write(bst, bsh, IM_RX_OVRN_INT, 0); 926 ifp->if_ierrors++; 927 } 928 929 /* 930 * Receive interrupts. 931 */ 932 if (status & IM_RCV_INT) { 933 smc91cxx_read(sc); 934 } 935 936 /* 937 * Memory allocation interrupts. 938 */ 939 if (status & IM_ALLOC_INT) { 940 /* Disable this interrupt. */ 941 mask &= ~IM_ALLOC_INT; 942 sc->sc_intmask &= ~IM_ALLOC_INT; 943 944 /* 945 * Save allocated packet number for use in start 946 */ 947 packetno = bus_space_read_1(bst, bsh, ALLOC_RESULT_REG_B); 948 KASSERT(sc->sc_txpacketno & ARR_FAILED); 949 sc->sc_txpacketno = packetno; 950 951 /* 952 * We can transmit again! 953 */ 954 ifp->if_flags &= ~IFF_OACTIVE; 955 ifp->if_timer = 0; 956 } 957 958 /* 959 * Transmit complete interrupt. Handle transmission error messages. 960 * This will only be called on error condition because of AUTO RELEASE 961 * mode. 962 */ 963 if (status & IM_TX_INT) { 964 smc91cxx_intr_ack_write(bst, bsh, IM_TX_INT, 0); 965 966 packetno = bus_space_read_2(bst, bsh, FIFO_PORTS_REG_W) & 967 FIFO_TX_MASK; 968 969 /* 970 * Select this as the packet to read from. 971 */ 972 bus_space_write_2(bst, bsh, PACKET_NUM_REG_B, packetno); 973 974 /* 975 * Position the pointer to the beginning of the packet, wait 976 * for preload. 977 */ 978 bus_space_write_2(bst, bsh, POINTER_REG_W, 979 PTR_AUTOINC | PTR_READ /* | 0x0000 */); 980 delay(1); 981 982 /* 983 * Fetch the TX status word. This will be a copy of 984 * the EPH_STATUS_REG_W at the time of the transmission 985 * failure. 986 */ 987 tx_status = bus_space_read_2(bst, bsh, DATA_REG_W); 988 989 if (tx_status & EPHSR_TX_SUC) { 990 static struct timeval txsuc_last; 991 static int txsuc_count; 992 if (ppsratecheck(&txsuc_last, &txsuc_count, 1)) 993 printf("%s: successful packet caused TX" 994 " interrupt?!\n", device_xname(sc->sc_dev)); 995 } else 996 ifp->if_oerrors++; 997 998 if (tx_status & EPHSR_LATCOL) 999 ifp->if_collisions++; 1000 1001 /* Disable this interrupt (start will reenable if needed). */ 1002 mask &= ~IM_TX_INT; 1003 sc->sc_intmask &= ~IM_TX_INT; 1004 1005 /* 1006 * Some of these errors disable the transmitter; reenable it. 1007 */ 1008 SMC_SELECT_BANK(sc, 0); 1009 #ifdef SMC91CXX_SW_PAD 1010 bus_space_write_2(bst, bsh, TXMIT_CONTROL_REG_W, TCR_ENABLE); 1011 #else 1012 bus_space_write_2(bst, bsh, TXMIT_CONTROL_REG_W, 1013 TCR_ENABLE | TCR_PAD_ENABLE); 1014 #endif 1015 1016 /* 1017 * Kill the failed packet and wait for the MMU to unbusy. 1018 */ 1019 SMC_SELECT_BANK(sc, 2); 1020 while (bus_space_read_2(bst, bsh, MMU_CMD_REG_W) & MMUCR_BUSY) 1021 /* XXX bound this loop! */ ; 1022 bus_space_write_2(bst, bsh, MMU_CMD_REG_W, MMUCR_FREEPKT); 1023 1024 ifp->if_timer = 0; 1025 } 1026 1027 /* 1028 * Transmit underrun interrupts. We use this opportunity to 1029 * update transmit statistics from the card. 1030 */ 1031 if (status & IM_TX_EMPTY_INT) { 1032 smc91cxx_intr_ack_write(bst, bsh, IM_TX_EMPTY_INT, 0); 1033 1034 /* Disable this interrupt. */ 1035 mask &= ~IM_TX_EMPTY_INT; 1036 sc->sc_intmask &= ~IM_TX_EMPTY_INT; 1037 1038 SMC_SELECT_BANK(sc, 0); 1039 card_stats = bus_space_read_2(bst, bsh, COUNTER_REG_W); 1040 1041 /* Single collisions. */ 1042 ifp->if_collisions += card_stats & ECR_COLN_MASK; 1043 1044 /* Multiple collisions. */ 1045 ifp->if_collisions += (card_stats & ECR_MCOLN_MASK) >> 4; 1046 1047 SMC_SELECT_BANK(sc, 2); 1048 1049 ifp->if_timer = 0; 1050 } 1051 1052 /* 1053 * Internal PHY status change 1054 */ 1055 if (sc->sc_chipid == CHIP_91C111 && sc->sc_internal_phy && 1056 (status & IM_MD_INT)) { 1057 1058 /* 1059 * Internal PHY status change 1060 */ 1061 smc91cxx_intr_ack_write(bst, bsh, IM_MD_INT, 0); 1062 mii_pollstat(&sc->sc_mii); 1063 } 1064 1065 /* 1066 * Other errors. Reset the interface. 1067 */ 1068 if (status & IM_EPH_INT) { 1069 smc91cxx_stop(sc); 1070 smc91cxx_init(sc); 1071 } 1072 1073 /* 1074 * Attempt to queue more packets for transmission. 1075 */ 1076 smc91cxx_start(ifp); 1077 1078 /* 1079 * Reenable the interrupts we wish to receive now that processing 1080 * is complete. 1081 */ 1082 mask |= sc->sc_intmask; 1083 smc91cxx_intr_mask_write(bst, bsh, mask); 1084 1085 if (status) 1086 rnd_add_uint32(&sc->rnd_source, status); 1087 1088 return (1); 1089 } 1090 1091 /* 1092 * Read a packet from the card and pass it up to the kernel. 1093 * NOTE! WE EXPECT TO BE IN REGISTER WINDOW 2! 1094 */ 1095 void 1096 smc91cxx_read(struct smc91cxx_softc *sc) 1097 { 1098 struct ifnet *ifp = &sc->sc_ec.ec_if; 1099 bus_space_tag_t bst = sc->sc_bst; 1100 bus_space_handle_t bsh = sc->sc_bsh; 1101 struct ether_header *eh; 1102 struct mbuf *m; 1103 u_int16_t status, packetno, packetlen; 1104 u_int8_t *data; 1105 u_int32_t dr; 1106 bool first = true; 1107 1108 again: 1109 /* 1110 * Set data pointer to the beginning of the packet. Since 1111 * PTR_RCV is set, the packet number will be found automatically 1112 * in FIFO_PORTS_REG_W, FIFO_RX_MASK. 1113 */ 1114 packetno = bus_space_read_2(bst, bsh, FIFO_PORTS_REG_W); 1115 if (packetno & FIFO_REMPTY) { 1116 if (first) { 1117 aprint_error_dev(sc->sc_dev, 1118 "receive interrupt on empty fifo\n"); 1119 } 1120 return; 1121 } 1122 first = false; 1123 1124 bus_space_write_2(bst, bsh, POINTER_REG_W, 1125 PTR_READ | PTR_RCV | PTR_AUTOINC /* | 0x0000 */); 1126 delay(1); 1127 1128 /* 1129 * First two words are status and packet length. 1130 */ 1131 dr = bus_space_read_4(bst, bsh, DATA_REG_W); 1132 status = (u_int16_t)dr; 1133 packetlen = (u_int16_t)(dr >> 16); 1134 1135 packetlen &= RLEN_MASK; 1136 if (packetlen < ETHER_MIN_LEN - ETHER_CRC_LEN + 6 || packetlen > 1534) { 1137 ifp->if_ierrors++; 1138 goto out; 1139 } 1140 1141 /* 1142 * The packet length includes 3 extra words: status, length, 1143 * and an extra word that includes the control byte. 1144 */ 1145 packetlen -= 6; 1146 1147 /* 1148 * Account for receive errors and discard. 1149 */ 1150 if (status & RS_ERRORS) { 1151 ifp->if_ierrors++; 1152 goto out; 1153 } 1154 1155 /* 1156 * Adjust for odd-length packet. 1157 */ 1158 if (status & RS_ODDFRAME) 1159 packetlen++; 1160 1161 /* 1162 * Allocate a header mbuf. 1163 */ 1164 MGETHDR(m, M_DONTWAIT, MT_DATA); 1165 if (m == NULL) 1166 goto out; 1167 m->m_pkthdr.rcvif = ifp; 1168 m->m_pkthdr.len = packetlen; 1169 1170 /* 1171 * Always put the packet in a cluster. 1172 * XXX should chain small mbufs if less than threshold. 1173 */ 1174 MCLGET(m, M_DONTWAIT); 1175 if ((m->m_flags & M_EXT) == 0) { 1176 m_freem(m); 1177 ifp->if_ierrors++; 1178 aprint_error_dev(sc->sc_dev, 1179 "can't allocate cluster for incoming packet\n"); 1180 goto out; 1181 } 1182 1183 /* 1184 * Pull the packet off the interface. Make sure the payload 1185 * is aligned. 1186 */ 1187 if ((sc->sc_flags & SMC_FLAGS_32BIT_READ) == 0) { 1188 m->m_data = (char *) ALIGN(mtod(m, char *) + 1189 sizeof(struct ether_header)) - sizeof(struct ether_header); 1190 1191 eh = mtod(m, struct ether_header *); 1192 data = mtod(m, u_int8_t *); 1193 KASSERT(trunc_page((uintptr_t)data) == 1194 trunc_page((uintptr_t)data + packetlen - 1)); 1195 if (packetlen > 1) 1196 bus_space_read_multi_stream_2(bst, bsh, DATA_REG_W, 1197 (u_int16_t *)data, packetlen >> 1); 1198 if (packetlen & 1) { 1199 data += packetlen & ~1; 1200 *data = bus_space_read_1(bst, bsh, DATA_REG_B); 1201 } 1202 } else { 1203 m->m_data = (void *) ALIGN(mtod(m, void *)); 1204 eh = mtod(m, struct ether_header *); 1205 data = mtod(m, u_int8_t *); 1206 KASSERT(trunc_page((uintptr_t)data) == 1207 trunc_page((uintptr_t)data + packetlen - 1)); 1208 if (packetlen > 3) 1209 bus_space_read_multi_stream_4(bst, bsh, DATA_REG_W, 1210 (u_int32_t *)data, packetlen >> 2); 1211 if (packetlen & 3) { 1212 data += packetlen & ~3; 1213 *((u_int32_t *)data) = 1214 bus_space_read_stream_4(bst, bsh, DATA_REG_W); 1215 } 1216 } 1217 1218 ifp->if_ipackets++; 1219 1220 /* 1221 * Make sure to behave as IFF_SIMPLEX in all cases. 1222 * This is to cope with SMC91C92 (Megahertz XJ10BT), which 1223 * loops back packets to itself on promiscuous mode. 1224 * (should be ensured by chipset configuration) 1225 */ 1226 if ((ifp->if_flags & IFF_PROMISC) != 0) { 1227 /* 1228 * Drop packet looped back from myself. 1229 */ 1230 if (ether_cmp(eh->ether_shost, CLLADDR(ifp->if_sadl)) == 0) { 1231 m_freem(m); 1232 goto out; 1233 } 1234 } 1235 1236 m->m_pkthdr.len = m->m_len = packetlen; 1237 1238 /* 1239 * Hand the packet off to bpf listeners. 1240 */ 1241 bpf_mtap(ifp, m); 1242 1243 (*ifp->if_input)(ifp, m); 1244 1245 out: 1246 /* 1247 * Tell the card to free the memory occupied by this packet. 1248 */ 1249 while (bus_space_read_2(bst, bsh, MMU_CMD_REG_W) & MMUCR_BUSY) 1250 /* XXX bound this loop! */ ; 1251 bus_space_write_2(bst, bsh, MMU_CMD_REG_W, MMUCR_RELEASE); 1252 1253 /* 1254 * Check for another packet. 1255 */ 1256 goto again; 1257 } 1258 1259 /* 1260 * Process an ioctl request. 1261 */ 1262 int 1263 smc91cxx_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1264 { 1265 struct smc91cxx_softc *sc = ifp->if_softc; 1266 struct ifaddr *ifa = (struct ifaddr *)data; 1267 struct ifreq *ifr = (struct ifreq *)data; 1268 int s, error = 0; 1269 1270 s = splnet(); 1271 1272 switch (cmd) { 1273 case SIOCINITIFADDR: 1274 if ((error = smc91cxx_enable(sc)) != 0) 1275 break; 1276 ifp->if_flags |= IFF_UP; 1277 smc91cxx_init(sc); 1278 switch (ifa->ifa_addr->sa_family) { 1279 #ifdef INET 1280 case AF_INET: 1281 arp_ifinit(ifp, ifa); 1282 break; 1283 #endif 1284 default: 1285 break; 1286 } 1287 break; 1288 1289 1290 case SIOCSIFFLAGS: 1291 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1292 break; 1293 /* XXX re-use ether_ioctl() */ 1294 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1295 case IFF_RUNNING: 1296 /* 1297 * If interface is marked down and it is running, 1298 * stop it. 1299 */ 1300 smc91cxx_stop(sc); 1301 ifp->if_flags &= ~IFF_RUNNING; 1302 smc91cxx_disable(sc); 1303 break; 1304 case IFF_UP: 1305 /* 1306 * If interface is marked up and it is stopped, 1307 * start it. 1308 */ 1309 if ((error = smc91cxx_enable(sc)) != 0) 1310 break; 1311 smc91cxx_init(sc); 1312 break; 1313 case IFF_UP|IFF_RUNNING: 1314 /* 1315 * Reset the interface to pick up changes in any 1316 * other flags that affect hardware registers. 1317 */ 1318 smc91cxx_reset(sc); 1319 break; 1320 case 0: 1321 break; 1322 } 1323 break; 1324 1325 case SIOCADDMULTI: 1326 case SIOCDELMULTI: 1327 if ((sc->sc_flags & SMC_FLAGS_ENABLED) == 0) { 1328 error = EIO; 1329 break; 1330 } 1331 1332 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1333 /* 1334 * Multicast list has changed; set the hardware 1335 * filter accordingly. 1336 */ 1337 if (ifp->if_flags & IFF_RUNNING) 1338 smc91cxx_reset(sc); 1339 error = 0; 1340 } 1341 break; 1342 1343 case SIOCGIFMEDIA: 1344 case SIOCSIFMEDIA: 1345 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd); 1346 break; 1347 1348 default: 1349 error = ether_ioctl(ifp, cmd, data); 1350 break; 1351 } 1352 1353 splx(s); 1354 return (error); 1355 } 1356 1357 /* 1358 * Reset the interface. 1359 */ 1360 void 1361 smc91cxx_reset(struct smc91cxx_softc *sc) 1362 { 1363 int s; 1364 1365 s = splnet(); 1366 smc91cxx_stop(sc); 1367 smc91cxx_init(sc); 1368 splx(s); 1369 } 1370 1371 /* 1372 * Watchdog timer. 1373 */ 1374 void 1375 smc91cxx_watchdog(struct ifnet *ifp) 1376 { 1377 struct smc91cxx_softc *sc = ifp->if_softc; 1378 1379 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 1380 ifp->if_oerrors++; 1381 smc91cxx_reset(sc); 1382 } 1383 1384 /* 1385 * Stop output on the interface. 1386 */ 1387 void 1388 smc91cxx_stop(struct smc91cxx_softc *sc) 1389 { 1390 bus_space_tag_t bst = sc->sc_bst; 1391 bus_space_handle_t bsh = sc->sc_bsh; 1392 1393 /* 1394 * Clear interrupt mask; disable all interrupts. 1395 */ 1396 SMC_SELECT_BANK(sc, 2); 1397 smc91cxx_intr_mask_write(bst, bsh, 0); 1398 1399 /* 1400 * Disable transmitter and receiver. 1401 */ 1402 SMC_SELECT_BANK(sc, 0); 1403 bus_space_write_2(bst, bsh, RECV_CONTROL_REG_W, 0); 1404 bus_space_write_2(bst, bsh, TXMIT_CONTROL_REG_W, 0); 1405 1406 /* 1407 * Cancel watchdog timer. 1408 */ 1409 sc->sc_ec.ec_if.if_timer = 0; 1410 } 1411 1412 /* 1413 * Enable power on the interface. 1414 */ 1415 int 1416 smc91cxx_enable(struct smc91cxx_softc *sc) 1417 { 1418 1419 if ((sc->sc_flags & SMC_FLAGS_ENABLED) == 0 && sc->sc_enable != NULL) { 1420 if ((*sc->sc_enable)(sc) != 0) { 1421 aprint_error_dev(sc->sc_dev, "device enable failed\n"); 1422 return (EIO); 1423 } 1424 } 1425 1426 sc->sc_flags |= SMC_FLAGS_ENABLED; 1427 return (0); 1428 } 1429 1430 /* 1431 * Disable power on the interface. 1432 */ 1433 void 1434 smc91cxx_disable(struct smc91cxx_softc *sc) 1435 { 1436 1437 if ((sc->sc_flags & SMC_FLAGS_ENABLED) != 0 && sc->sc_disable != NULL) { 1438 (*sc->sc_disable)(sc); 1439 sc->sc_flags &= ~SMC_FLAGS_ENABLED; 1440 } 1441 } 1442 1443 int 1444 smc91cxx_activate(device_t self, enum devact act) 1445 { 1446 struct smc91cxx_softc *sc = device_private(self); 1447 1448 switch (act) { 1449 case DVACT_DEACTIVATE: 1450 if_deactivate(&sc->sc_ec.ec_if); 1451 return 0; 1452 default: 1453 return EOPNOTSUPP; 1454 } 1455 } 1456 1457 int 1458 smc91cxx_detach(device_t self, int flags) 1459 { 1460 struct smc91cxx_softc *sc = device_private(self); 1461 struct ifnet *ifp = &sc->sc_ec.ec_if; 1462 1463 /* Succeed now if there's no work to do. */ 1464 if ((sc->sc_flags & SMC_FLAGS_ATTACHED) == 0) 1465 return (0); 1466 1467 /* smc91cxx_disable() checks SMC_FLAGS_ENABLED */ 1468 smc91cxx_disable(sc); 1469 1470 /* smc91cxx_attach() never fails */ 1471 1472 /* Delete all media. */ 1473 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 1474 1475 rnd_detach_source(&sc->rnd_source); 1476 1477 ether_ifdetach(ifp); 1478 if_detach(ifp); 1479 1480 return (0); 1481 } 1482 1483 u_int32_t 1484 smc91cxx_mii_bitbang_read(device_t self) 1485 { 1486 struct smc91cxx_softc *sc = device_private(self); 1487 1488 /* We're already in bank 3. */ 1489 return (bus_space_read_2(sc->sc_bst, sc->sc_bsh, MGMT_REG_W)); 1490 } 1491 1492 void 1493 smc91cxx_mii_bitbang_write(device_t self, u_int32_t val) 1494 { 1495 struct smc91cxx_softc *sc = device_private(self); 1496 1497 /* We're already in bank 3. */ 1498 bus_space_write_2(sc->sc_bst, sc->sc_bsh, MGMT_REG_W, val); 1499 } 1500 1501 int 1502 smc91cxx_mii_readreg(device_t self, int phy, int reg) 1503 { 1504 struct smc91cxx_softc *sc = device_private(self); 1505 int val; 1506 1507 SMC_SELECT_BANK(sc, 3); 1508 1509 val = mii_bitbang_readreg(self, &smc91cxx_mii_bitbang_ops, phy, reg); 1510 1511 SMC_SELECT_BANK(sc, 2); 1512 1513 return (val); 1514 } 1515 1516 void 1517 smc91cxx_mii_writereg(device_t self, int phy, int reg, int val) 1518 { 1519 struct smc91cxx_softc *sc = device_private(self); 1520 1521 SMC_SELECT_BANK(sc, 3); 1522 1523 mii_bitbang_writereg(self, &smc91cxx_mii_bitbang_ops, phy, reg, val); 1524 1525 SMC_SELECT_BANK(sc, 2); 1526 } 1527 1528 void 1529 smc91cxx_statchg(struct ifnet *ifp) 1530 { 1531 struct smc91cxx_softc *sc = ifp->if_softc; 1532 bus_space_tag_t bst = sc->sc_bst; 1533 bus_space_handle_t bsh = sc->sc_bsh; 1534 int mctl; 1535 1536 SMC_SELECT_BANK(sc, 0); 1537 mctl = bus_space_read_2(bst, bsh, TXMIT_CONTROL_REG_W); 1538 if (sc->sc_mii.mii_media_active & IFM_FDX) 1539 mctl |= TCR_SWFDUP; 1540 else 1541 mctl &= ~TCR_SWFDUP; 1542 bus_space_write_2(bst, bsh, TXMIT_CONTROL_REG_W, mctl); 1543 SMC_SELECT_BANK(sc, 2); /* back to operating window */ 1544 } 1545 1546 /* 1547 * One second timer, used to tick the MII. 1548 */ 1549 void 1550 smc91cxx_tick(void *arg) 1551 { 1552 struct smc91cxx_softc *sc = arg; 1553 int s; 1554 1555 #ifdef DIAGNOSTIC 1556 if ((sc->sc_flags & SMC_FLAGS_HAS_MII) == 0) 1557 panic("smc91cxx_tick"); 1558 #endif 1559 1560 if (!device_is_active(sc->sc_dev)) 1561 return; 1562 1563 s = splnet(); 1564 mii_tick(&sc->sc_mii); 1565 splx(s); 1566 1567 callout_reset(&sc->sc_mii_callout, hz, smc91cxx_tick, sc); 1568 } 1569