1 /*- 2 * Copyright (c) 1997, 1998, 1999, 2000 3 * Bill Paul <wpaul@ee.columbia.edu>. 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 by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 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 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 * $FreeBSD: head/sys/dev/usb/net/if_cue.c 271832 2014-09-18 21:09:22Z glebius $ 33 */ 34 35 /* 36 * CATC USB-EL1210A USB to ethernet driver. Used in the CATC Netmate 37 * adapters and others. 38 * 39 * Written by Bill Paul <wpaul@ee.columbia.edu> 40 * Electrical Engineering Department 41 * Columbia University, New York City 42 */ 43 44 /* 45 * The CATC USB-EL1210A provides USB ethernet support at 10Mbps. The 46 * RX filter uses a 512-bit multicast hash table, single perfect entry 47 * for the station address, and promiscuous mode. Unlike the ADMtek 48 * and KLSI chips, the CATC ASIC supports read and write combining 49 * mode where multiple packets can be transfered using a single bulk 50 * transaction, which helps performance a great deal. 51 */ 52 53 #include <sys/stdint.h> 54 #include <sys/param.h> 55 #include <sys/queue.h> 56 #include <sys/types.h> 57 #include <sys/systm.h> 58 #include <sys/socket.h> 59 #include <sys/kernel.h> 60 #include <sys/bus.h> 61 #include <sys/module.h> 62 #include <sys/lock.h> 63 #include <sys/condvar.h> 64 #include <sys/sysctl.h> 65 #include <sys/unistd.h> 66 #include <sys/callout.h> 67 #include <sys/malloc.h> 68 #include <sys/caps.h> 69 70 #include <net/if.h> 71 #include <net/if_var.h> 72 #include <net/ifq_var.h> 73 74 #include <bus/u4b/usb.h> 75 #include <bus/u4b/usbdi.h> 76 #include <bus/u4b/usbdi_util.h> 77 #include "usbdevs.h" 78 79 #define USB_DEBUG_VAR cue_debug 80 #include <bus/u4b/usb_debug.h> 81 #include <bus/u4b/usb_process.h> 82 83 #include <bus/u4b/net/usb_ethernet.h> 84 #include <bus/u4b/net/if_cuereg.h> 85 86 /* 87 * Various supported device vendors/products. 88 */ 89 90 /* Belkin F5U111 adapter covered by NETMATE entry */ 91 92 static const STRUCT_USB_HOST_ID cue_devs[] = { 93 #define CUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } 94 CUE_DEV(CATC, NETMATE), 95 CUE_DEV(CATC, NETMATE2), 96 CUE_DEV(SMARTBRIDGES, SMARTLINK), 97 #undef CUE_DEV 98 }; 99 100 /* prototypes */ 101 102 static device_probe_t cue_probe; 103 static device_attach_t cue_attach; 104 static device_detach_t cue_detach; 105 106 static usb_callback_t cue_bulk_read_callback; 107 static usb_callback_t cue_bulk_write_callback; 108 109 static uether_fn_t cue_attach_post; 110 static uether_fn_t cue_init; 111 static uether_fn_t cue_stop; 112 static uether_fn_t cue_start; 113 static uether_fn_t cue_tick; 114 static uether_fn_t cue_setmulti; 115 static uether_fn_t cue_setpromisc; 116 117 static uint8_t cue_csr_read_1(struct cue_softc *, uint16_t); 118 static uint16_t cue_csr_read_2(struct cue_softc *, uint8_t); 119 static int cue_csr_write_1(struct cue_softc *, uint16_t, uint16_t); 120 static int cue_mem(struct cue_softc *, uint8_t, uint16_t, void *, int); 121 static int cue_getmac(struct cue_softc *, void *); 122 static uint32_t cue_mchash(const uint8_t *); 123 static void cue_reset(struct cue_softc *); 124 125 #ifdef USB_DEBUG 126 static int cue_debug = 0; 127 128 static SYSCTL_NODE(_hw_usb, OID_AUTO, cue, CTLFLAG_RW, 0, "USB cue"); 129 SYSCTL_INT(_hw_usb_cue, OID_AUTO, debug, CTLFLAG_RW, &cue_debug, 0, 130 "Debug level"); 131 #endif 132 133 static const struct usb_config cue_config[CUE_N_TRANSFER] = { 134 135 [CUE_BULK_DT_WR] = { 136 .type = UE_BULK, 137 .endpoint = UE_ADDR_ANY, 138 .direction = UE_DIR_OUT, 139 .bufsize = (MCLBYTES + 2), 140 .flags = {.pipe_bof = 1,}, 141 .callback = cue_bulk_write_callback, 142 .timeout = 10000, /* 10 seconds */ 143 }, 144 145 [CUE_BULK_DT_RD] = { 146 .type = UE_BULK, 147 .endpoint = UE_ADDR_ANY, 148 .direction = UE_DIR_IN, 149 .bufsize = (MCLBYTES + 2), 150 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 151 .callback = cue_bulk_read_callback, 152 }, 153 }; 154 155 static device_method_t cue_methods[] = { 156 /* Device interface */ 157 DEVMETHOD(device_probe, cue_probe), 158 DEVMETHOD(device_attach, cue_attach), 159 DEVMETHOD(device_detach, cue_detach), 160 161 DEVMETHOD_END 162 }; 163 164 static driver_t cue_driver = { 165 .name = "cue", 166 .methods = cue_methods, 167 .size = sizeof(struct cue_softc), 168 }; 169 170 static devclass_t cue_devclass; 171 172 DRIVER_MODULE(cue, uhub, cue_driver, cue_devclass, NULL, NULL); 173 MODULE_DEPEND(cue, uether, 1, 1, 1); 174 MODULE_DEPEND(cue, usb, 1, 1, 1); 175 MODULE_DEPEND(cue, ether, 1, 1, 1); 176 MODULE_VERSION(cue, 1); 177 178 static const struct usb_ether_methods cue_ue_methods = { 179 .ue_attach_post = cue_attach_post, 180 .ue_start = cue_start, 181 .ue_init = cue_init, 182 .ue_stop = cue_stop, 183 .ue_tick = cue_tick, 184 .ue_setmulti = cue_setmulti, 185 .ue_setpromisc = cue_setpromisc, 186 }; 187 188 #define CUE_SETBIT(sc, reg, x) \ 189 cue_csr_write_1(sc, reg, cue_csr_read_1(sc, reg) | (x)) 190 191 #define CUE_CLRBIT(sc, reg, x) \ 192 cue_csr_write_1(sc, reg, cue_csr_read_1(sc, reg) & ~(x)) 193 194 static uint8_t 195 cue_csr_read_1(struct cue_softc *sc, uint16_t reg) 196 { 197 struct usb_device_request req; 198 uint8_t val; 199 200 req.bmRequestType = UT_READ_VENDOR_DEVICE; 201 req.bRequest = CUE_CMD_READREG; 202 USETW(req.wValue, 0); 203 USETW(req.wIndex, reg); 204 USETW(req.wLength, 1); 205 206 if (uether_do_request(&sc->sc_ue, &req, &val, 1000)) { 207 /* ignore any errors */ 208 } 209 return (val); 210 } 211 212 static uint16_t 213 cue_csr_read_2(struct cue_softc *sc, uint8_t reg) 214 { 215 struct usb_device_request req; 216 uint16_t val; 217 218 req.bmRequestType = UT_READ_VENDOR_DEVICE; 219 req.bRequest = CUE_CMD_READREG; 220 USETW(req.wValue, 0); 221 USETW(req.wIndex, reg); 222 USETW(req.wLength, 2); 223 224 (void)uether_do_request(&sc->sc_ue, &req, &val, 1000); 225 return (le16toh(val)); 226 } 227 228 static int 229 cue_csr_write_1(struct cue_softc *sc, uint16_t reg, uint16_t val) 230 { 231 struct usb_device_request req; 232 233 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 234 req.bRequest = CUE_CMD_WRITEREG; 235 USETW(req.wValue, val); 236 USETW(req.wIndex, reg); 237 USETW(req.wLength, 0); 238 239 return (uether_do_request(&sc->sc_ue, &req, NULL, 1000)); 240 } 241 242 static int 243 cue_mem(struct cue_softc *sc, uint8_t cmd, uint16_t addr, void *buf, int len) 244 { 245 struct usb_device_request req; 246 247 if (cmd == CUE_CMD_READSRAM) 248 req.bmRequestType = UT_READ_VENDOR_DEVICE; 249 else 250 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 251 req.bRequest = cmd; 252 USETW(req.wValue, 0); 253 USETW(req.wIndex, addr); 254 USETW(req.wLength, len); 255 256 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 257 } 258 259 static int 260 cue_getmac(struct cue_softc *sc, void *buf) 261 { 262 struct usb_device_request req; 263 264 req.bmRequestType = UT_READ_VENDOR_DEVICE; 265 req.bRequest = CUE_CMD_GET_MACADDR; 266 USETW(req.wValue, 0); 267 USETW(req.wIndex, 0); 268 USETW(req.wLength, ETHER_ADDR_LEN); 269 270 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 271 } 272 273 #define CUE_BITS 9 274 275 static uint32_t 276 cue_mchash(const uint8_t *addr) 277 { 278 uint32_t crc; 279 280 /* Compute CRC for the address value. */ 281 crc = ether_crc32_le(addr, ETHER_ADDR_LEN); 282 283 return (crc & ((1 << CUE_BITS) - 1)); 284 } 285 286 static void 287 cue_setpromisc(struct usb_ether *ue) 288 { 289 struct cue_softc *sc = uether_getsc(ue); 290 struct ifnet *ifp = uether_getifp(ue); 291 292 CUE_LOCK_ASSERT(sc); 293 294 /* if we want promiscuous mode, set the allframes bit */ 295 if (ifp->if_flags & IFF_PROMISC) 296 CUE_SETBIT(sc, CUE_ETHCTL, CUE_ETHCTL_PROMISC); 297 else 298 CUE_CLRBIT(sc, CUE_ETHCTL, CUE_ETHCTL_PROMISC); 299 300 /* write multicast hash-bits */ 301 cue_setmulti(ue); 302 } 303 304 static void 305 cue_setmulti(struct usb_ether *ue) 306 { 307 struct cue_softc *sc = uether_getsc(ue); 308 struct ifnet *ifp = uether_getifp(ue); 309 struct ifmultiaddr *ifma; 310 uint32_t h = 0, i; 311 uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; 312 313 CUE_LOCK_ASSERT(sc); 314 315 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 316 for (i = 0; i < 8; i++) 317 hashtbl[i] = 0xff; 318 cue_mem(sc, CUE_CMD_WRITESRAM, CUE_MCAST_TABLE_ADDR, 319 &hashtbl, 8); 320 return; 321 } 322 323 /* now program new ones */ 324 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) 325 { 326 if (ifma->ifma_addr->sa_family != AF_LINK) 327 continue; 328 h = cue_mchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 329 hashtbl[h >> 3] |= 1 << (h & 0x7); 330 } 331 332 /* 333 * Also include the broadcast address in the filter 334 * so we can receive broadcast frames. 335 */ 336 if (ifp->if_flags & IFF_BROADCAST) { 337 h = cue_mchash(ifp->if_broadcastaddr); 338 hashtbl[h >> 3] |= 1 << (h & 0x7); 339 } 340 341 cue_mem(sc, CUE_CMD_WRITESRAM, CUE_MCAST_TABLE_ADDR, &hashtbl, 8); 342 } 343 344 static void 345 cue_reset(struct cue_softc *sc) 346 { 347 struct usb_device_request req; 348 349 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 350 req.bRequest = CUE_CMD_RESET; 351 USETW(req.wValue, 0); 352 USETW(req.wIndex, 0); 353 USETW(req.wLength, 0); 354 355 if (uether_do_request(&sc->sc_ue, &req, NULL, 1000)) { 356 /* ignore any errors */ 357 } 358 359 /* 360 * wait a little while for the chip to get its brains in order: 361 */ 362 uether_pause(&sc->sc_ue, hz / 100); 363 } 364 365 static void 366 cue_attach_post(struct usb_ether *ue) 367 { 368 struct cue_softc *sc = uether_getsc(ue); 369 370 cue_getmac(sc, ue->ue_eaddr); 371 } 372 373 static int 374 cue_probe(device_t dev) 375 { 376 struct usb_attach_arg *uaa = device_get_ivars(dev); 377 378 if (uaa->usb_mode != USB_MODE_HOST) 379 return (ENXIO); 380 if (uaa->info.bConfigIndex != CUE_CONFIG_IDX) 381 return (ENXIO); 382 if (uaa->info.bIfaceIndex != CUE_IFACE_IDX) 383 return (ENXIO); 384 385 return (usbd_lookup_id_by_uaa(cue_devs, sizeof(cue_devs), uaa)); 386 } 387 388 /* 389 * Attach the interface. Allocate softc structures, do ifmedia 390 * setup and ethernet/BPF attach. 391 */ 392 static int 393 cue_attach(device_t dev) 394 { 395 struct usb_attach_arg *uaa = device_get_ivars(dev); 396 struct cue_softc *sc = device_get_softc(dev); 397 struct usb_ether *ue = &sc->sc_ue; 398 uint8_t iface_index; 399 int error; 400 401 device_set_usb_desc(dev); 402 lockinit(&sc->sc_lock, device_get_nameunit(dev), 0, LK_CANRECURSE); 403 404 iface_index = CUE_IFACE_IDX; 405 error = usbd_transfer_setup(uaa->device, &iface_index, 406 sc->sc_xfer, cue_config, CUE_N_TRANSFER, sc, &sc->sc_lock); 407 if (error) { 408 device_printf(dev, "allocating USB transfers failed\n"); 409 goto detach; 410 } 411 412 ue->ue_sc = sc; 413 ue->ue_dev = dev; 414 ue->ue_udev = uaa->device; 415 ue->ue_lock = &sc->sc_lock; 416 ue->ue_methods = &cue_ue_methods; 417 418 error = uether_ifattach(ue); 419 if (error) { 420 device_printf(dev, "could not attach interface\n"); 421 goto detach; 422 } 423 return (0); /* success */ 424 425 detach: 426 cue_detach(dev); 427 return (ENXIO); /* failure */ 428 } 429 430 static int 431 cue_detach(device_t dev) 432 { 433 struct cue_softc *sc = device_get_softc(dev); 434 struct usb_ether *ue = &sc->sc_ue; 435 436 usbd_transfer_unsetup(sc->sc_xfer, CUE_N_TRANSFER); 437 uether_ifdetach(ue); 438 lockuninit(&sc->sc_lock); 439 440 return (0); 441 } 442 443 static void 444 cue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 445 { 446 struct cue_softc *sc = usbd_xfer_softc(xfer); 447 struct usb_ether *ue = &sc->sc_ue; 448 struct ifnet *ifp = uether_getifp(ue); 449 struct usb_page_cache *pc; 450 uint8_t buf[2]; 451 int len; 452 int actlen; 453 454 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 455 456 switch (USB_GET_STATE(xfer)) { 457 case USB_ST_TRANSFERRED: 458 459 if (actlen <= (int)(2 + sizeof(struct ether_header))) { 460 IFNET_STAT_INC(ifp, ierrors, 1); 461 goto tr_setup; 462 } 463 pc = usbd_xfer_get_frame(xfer, 0); 464 usbd_copy_out(pc, 0, buf, 2); 465 actlen -= 2; 466 len = buf[0] | (buf[1] << 8); 467 len = min(actlen, len); 468 469 uether_rxbuf(ue, pc, 2, len); 470 /* FALLTHROUGH */ 471 case USB_ST_SETUP: 472 tr_setup: 473 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 474 usbd_transfer_submit(xfer); 475 uether_rxflush(ue); 476 return; 477 478 default: /* Error */ 479 DPRINTF("bulk read error, %s\n", 480 usbd_errstr(error)); 481 482 if (error != USB_ERR_CANCELLED) { 483 /* try to clear stall first */ 484 usbd_xfer_set_stall(xfer); 485 goto tr_setup; 486 } 487 return; 488 489 } 490 } 491 492 static void 493 cue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 494 { 495 struct cue_softc *sc = usbd_xfer_softc(xfer); 496 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 497 struct usb_page_cache *pc; 498 struct mbuf *m; 499 uint8_t buf[2]; 500 501 switch (USB_GET_STATE(xfer)) { 502 case USB_ST_TRANSFERRED: 503 DPRINTFN(11, "transfer complete\n"); 504 IFNET_STAT_INC(ifp, opackets, 1); 505 506 /* FALLTHROUGH */ 507 case USB_ST_SETUP: 508 tr_setup: 509 m = ifq_dequeue(&ifp->if_snd); 510 511 if (m == NULL) 512 return; 513 if (m->m_pkthdr.len > MCLBYTES) 514 m->m_pkthdr.len = MCLBYTES; 515 usbd_xfer_set_frame_len(xfer, 0, (m->m_pkthdr.len + 2)); 516 517 /* the first two bytes are the frame length */ 518 519 buf[0] = (uint8_t)(m->m_pkthdr.len); 520 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8); 521 522 pc = usbd_xfer_get_frame(xfer, 0); 523 usbd_copy_in(pc, 0, buf, 2); 524 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); 525 526 /* 527 * If there's a BPF listener, bounce a copy of this frame 528 * to him. 529 */ 530 BPF_MTAP(ifp, m); 531 532 m_freem(m); 533 534 usbd_transfer_submit(xfer); 535 536 return; 537 538 default: /* Error */ 539 DPRINTFN(11, "transfer error, %s\n", 540 usbd_errstr(error)); 541 542 IFNET_STAT_INC(ifp, oerrors, 1); 543 544 if (error != USB_ERR_CANCELLED) { 545 /* try to clear stall first */ 546 usbd_xfer_set_stall(xfer); 547 goto tr_setup; 548 } 549 return; 550 } 551 } 552 553 static void 554 cue_tick(struct usb_ether *ue) 555 { 556 struct cue_softc *sc = uether_getsc(ue); 557 struct ifnet *ifp = uether_getifp(ue); 558 559 CUE_LOCK_ASSERT(sc); 560 561 IFNET_STAT_INC(ifp, collisions, cue_csr_read_2(sc, CUE_TX_SINGLECOLL)); 562 IFNET_STAT_INC(ifp, collisions, cue_csr_read_2(sc, CUE_TX_MULTICOLL)); 563 IFNET_STAT_INC(ifp, collisions, cue_csr_read_2(sc, CUE_TX_EXCESSCOLL)); 564 565 if (cue_csr_read_2(sc, CUE_RX_FRAMEERR)) 566 IFNET_STAT_INC(ifp, ierrors, 1); 567 } 568 569 static void 570 cue_start(struct usb_ether *ue) 571 { 572 struct cue_softc *sc = uether_getsc(ue); 573 574 /* 575 * start the USB transfers, if not already started: 576 */ 577 usbd_transfer_start(sc->sc_xfer[CUE_BULK_DT_RD]); 578 usbd_transfer_start(sc->sc_xfer[CUE_BULK_DT_WR]); 579 } 580 581 static void 582 cue_init(struct usb_ether *ue) 583 { 584 struct cue_softc *sc = uether_getsc(ue); 585 struct ifnet *ifp = uether_getifp(ue); 586 int i; 587 588 CUE_LOCK_ASSERT(sc); 589 590 /* 591 * Cancel pending I/O and free all RX/TX buffers. 592 */ 593 cue_stop(ue); 594 #if 0 595 cue_reset(sc); 596 #endif 597 /* Set MAC address */ 598 for (i = 0; i < ETHER_ADDR_LEN; i++) 599 cue_csr_write_1(sc, CUE_PAR0 - i, IF_LLADDR(ifp)[i]); 600 601 /* Enable RX logic. */ 602 cue_csr_write_1(sc, CUE_ETHCTL, CUE_ETHCTL_RX_ON | CUE_ETHCTL_MCAST_ON); 603 604 /* Load the multicast filter */ 605 cue_setpromisc(ue); 606 607 /* 608 * Set the number of RX and TX buffers that we want 609 * to reserve inside the ASIC. 610 */ 611 cue_csr_write_1(sc, CUE_RX_BUFPKTS, CUE_RX_FRAMES); 612 cue_csr_write_1(sc, CUE_TX_BUFPKTS, CUE_TX_FRAMES); 613 614 /* Set advanced operation modes. */ 615 cue_csr_write_1(sc, CUE_ADVANCED_OPMODES, 616 CUE_AOP_EMBED_RXLEN | 0x01);/* 1 wait state */ 617 618 /* Program the LED operation. */ 619 cue_csr_write_1(sc, CUE_LEDCTL, CUE_LEDCTL_FOLLOW_LINK); 620 621 usbd_xfer_set_stall(sc->sc_xfer[CUE_BULK_DT_WR]); 622 623 ifp->if_flags |= IFF_RUNNING; 624 cue_start(ue); 625 } 626 627 /* 628 * Stop the adapter and free any mbufs allocated to the 629 * RX and TX lists. 630 */ 631 static void 632 cue_stop(struct usb_ether *ue) 633 { 634 struct cue_softc *sc = uether_getsc(ue); 635 struct ifnet *ifp = uether_getifp(ue); 636 637 CUE_LOCK_ASSERT(sc); 638 639 ifp->if_flags &= ~IFF_RUNNING; 640 641 /* 642 * stop all the transfers, if not already stopped: 643 */ 644 usbd_transfer_stop(sc->sc_xfer[CUE_BULK_DT_WR]); 645 usbd_transfer_stop(sc->sc_xfer[CUE_BULK_DT_RD]); 646 647 cue_csr_write_1(sc, CUE_ETHCTL, 0); 648 cue_reset(sc); 649 } 650