1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1997, 1998, 1999, 2000 5 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bill Paul. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 /* 39 * CATC USB-EL1210A USB to ethernet driver. Used in the CATC Netmate 40 * adapters and others. 41 * 42 * Written by Bill Paul <wpaul@ee.columbia.edu> 43 * Electrical Engineering Department 44 * Columbia University, New York City 45 */ 46 47 /* 48 * The CATC USB-EL1210A provides USB ethernet support at 10Mbps. The 49 * RX filter uses a 512-bit multicast hash table, single perfect entry 50 * for the station address, and promiscuous mode. Unlike the ADMtek 51 * and KLSI chips, the CATC ASIC supports read and write combining 52 * mode where multiple packets can be transferred using a single bulk 53 * transaction, which helps performance a great deal. 54 */ 55 56 #include <sys/stdint.h> 57 #include <sys/stddef.h> 58 #include <sys/param.h> 59 #include <sys/queue.h> 60 #include <sys/types.h> 61 #include <sys/systm.h> 62 #include <sys/socket.h> 63 #include <sys/kernel.h> 64 #include <sys/bus.h> 65 #include <sys/module.h> 66 #include <sys/lock.h> 67 #include <sys/mutex.h> 68 #include <sys/condvar.h> 69 #include <sys/sysctl.h> 70 #include <sys/sx.h> 71 #include <sys/unistd.h> 72 #include <sys/callout.h> 73 #include <sys/malloc.h> 74 #include <sys/priv.h> 75 76 #include <net/if.h> 77 #include <net/if_var.h> 78 79 #include <dev/usb/usb.h> 80 #include <dev/usb/usbdi.h> 81 #include <dev/usb/usbdi_util.h> 82 #include "usbdevs.h" 83 84 #define USB_DEBUG_VAR cue_debug 85 #include <dev/usb/usb_debug.h> 86 #include <dev/usb/usb_process.h> 87 88 #include <dev/usb/net/usb_ethernet.h> 89 #include <dev/usb/net/if_cuereg.h> 90 91 /* 92 * Various supported device vendors/products. 93 */ 94 95 /* Belkin F5U111 adapter covered by NETMATE entry */ 96 97 static const STRUCT_USB_HOST_ID cue_devs[] = { 98 #define CUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } 99 CUE_DEV(CATC, NETMATE), 100 CUE_DEV(CATC, NETMATE2), 101 CUE_DEV(SMARTBRIDGES, SMARTLINK), 102 #undef CUE_DEV 103 }; 104 105 /* prototypes */ 106 107 static device_probe_t cue_probe; 108 static device_attach_t cue_attach; 109 static device_detach_t cue_detach; 110 111 static usb_callback_t cue_bulk_read_callback; 112 static usb_callback_t cue_bulk_write_callback; 113 114 static uether_fn_t cue_attach_post; 115 static uether_fn_t cue_init; 116 static uether_fn_t cue_stop; 117 static uether_fn_t cue_start; 118 static uether_fn_t cue_tick; 119 static uether_fn_t cue_setmulti; 120 static uether_fn_t cue_setpromisc; 121 122 static uint8_t cue_csr_read_1(struct cue_softc *, uint16_t); 123 static uint16_t cue_csr_read_2(struct cue_softc *, uint8_t); 124 static int cue_csr_write_1(struct cue_softc *, uint16_t, uint16_t); 125 static int cue_mem(struct cue_softc *, uint8_t, uint16_t, void *, int); 126 static int cue_getmac(struct cue_softc *, void *); 127 static uint32_t cue_mchash(const uint8_t *); 128 static void cue_reset(struct cue_softc *); 129 130 #ifdef USB_DEBUG 131 static int cue_debug = 0; 132 133 static SYSCTL_NODE(_hw_usb, OID_AUTO, cue, CTLFLAG_RW, 0, "USB cue"); 134 SYSCTL_INT(_hw_usb_cue, OID_AUTO, debug, CTLFLAG_RWTUN, &cue_debug, 0, 135 "Debug level"); 136 #endif 137 138 static const struct usb_config cue_config[CUE_N_TRANSFER] = { 139 140 [CUE_BULK_DT_WR] = { 141 .type = UE_BULK, 142 .endpoint = UE_ADDR_ANY, 143 .direction = UE_DIR_OUT, 144 .bufsize = (MCLBYTES + 2), 145 .flags = {.pipe_bof = 1,}, 146 .callback = cue_bulk_write_callback, 147 .timeout = 10000, /* 10 seconds */ 148 }, 149 150 [CUE_BULK_DT_RD] = { 151 .type = UE_BULK, 152 .endpoint = UE_ADDR_ANY, 153 .direction = UE_DIR_IN, 154 .bufsize = (MCLBYTES + 2), 155 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 156 .callback = cue_bulk_read_callback, 157 }, 158 }; 159 160 static device_method_t cue_methods[] = { 161 /* Device interface */ 162 DEVMETHOD(device_probe, cue_probe), 163 DEVMETHOD(device_attach, cue_attach), 164 DEVMETHOD(device_detach, cue_detach), 165 166 DEVMETHOD_END 167 }; 168 169 static driver_t cue_driver = { 170 .name = "cue", 171 .methods = cue_methods, 172 .size = sizeof(struct cue_softc), 173 }; 174 175 static devclass_t cue_devclass; 176 177 DRIVER_MODULE(cue, uhub, cue_driver, cue_devclass, NULL, 0); 178 MODULE_DEPEND(cue, uether, 1, 1, 1); 179 MODULE_DEPEND(cue, usb, 1, 1, 1); 180 MODULE_DEPEND(cue, ether, 1, 1, 1); 181 MODULE_VERSION(cue, 1); 182 USB_PNP_HOST_INFO(cue_devs); 183 184 static const struct usb_ether_methods cue_ue_methods = { 185 .ue_attach_post = cue_attach_post, 186 .ue_start = cue_start, 187 .ue_init = cue_init, 188 .ue_stop = cue_stop, 189 .ue_tick = cue_tick, 190 .ue_setmulti = cue_setmulti, 191 .ue_setpromisc = cue_setpromisc, 192 }; 193 194 #define CUE_SETBIT(sc, reg, x) \ 195 cue_csr_write_1(sc, reg, cue_csr_read_1(sc, reg) | (x)) 196 197 #define CUE_CLRBIT(sc, reg, x) \ 198 cue_csr_write_1(sc, reg, cue_csr_read_1(sc, reg) & ~(x)) 199 200 static uint8_t 201 cue_csr_read_1(struct cue_softc *sc, uint16_t reg) 202 { 203 struct usb_device_request req; 204 uint8_t val; 205 206 req.bmRequestType = UT_READ_VENDOR_DEVICE; 207 req.bRequest = CUE_CMD_READREG; 208 USETW(req.wValue, 0); 209 USETW(req.wIndex, reg); 210 USETW(req.wLength, 1); 211 212 if (uether_do_request(&sc->sc_ue, &req, &val, 1000)) { 213 /* ignore any errors */ 214 } 215 return (val); 216 } 217 218 static uint16_t 219 cue_csr_read_2(struct cue_softc *sc, uint8_t reg) 220 { 221 struct usb_device_request req; 222 uint16_t val; 223 224 req.bmRequestType = UT_READ_VENDOR_DEVICE; 225 req.bRequest = CUE_CMD_READREG; 226 USETW(req.wValue, 0); 227 USETW(req.wIndex, reg); 228 USETW(req.wLength, 2); 229 230 (void)uether_do_request(&sc->sc_ue, &req, &val, 1000); 231 return (le16toh(val)); 232 } 233 234 static int 235 cue_csr_write_1(struct cue_softc *sc, uint16_t reg, uint16_t val) 236 { 237 struct usb_device_request req; 238 239 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 240 req.bRequest = CUE_CMD_WRITEREG; 241 USETW(req.wValue, val); 242 USETW(req.wIndex, reg); 243 USETW(req.wLength, 0); 244 245 return (uether_do_request(&sc->sc_ue, &req, NULL, 1000)); 246 } 247 248 static int 249 cue_mem(struct cue_softc *sc, uint8_t cmd, uint16_t addr, void *buf, int len) 250 { 251 struct usb_device_request req; 252 253 if (cmd == CUE_CMD_READSRAM) 254 req.bmRequestType = UT_READ_VENDOR_DEVICE; 255 else 256 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 257 req.bRequest = cmd; 258 USETW(req.wValue, 0); 259 USETW(req.wIndex, addr); 260 USETW(req.wLength, len); 261 262 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 263 } 264 265 static int 266 cue_getmac(struct cue_softc *sc, void *buf) 267 { 268 struct usb_device_request req; 269 270 req.bmRequestType = UT_READ_VENDOR_DEVICE; 271 req.bRequest = CUE_CMD_GET_MACADDR; 272 USETW(req.wValue, 0); 273 USETW(req.wIndex, 0); 274 USETW(req.wLength, ETHER_ADDR_LEN); 275 276 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 277 } 278 279 #define CUE_BITS 9 280 281 static uint32_t 282 cue_mchash(const uint8_t *addr) 283 { 284 uint32_t crc; 285 286 /* Compute CRC for the address value. */ 287 crc = ether_crc32_le(addr, ETHER_ADDR_LEN); 288 289 return (crc & ((1 << CUE_BITS) - 1)); 290 } 291 292 static void 293 cue_setpromisc(struct usb_ether *ue) 294 { 295 struct cue_softc *sc = uether_getsc(ue); 296 struct ifnet *ifp = uether_getifp(ue); 297 298 CUE_LOCK_ASSERT(sc, MA_OWNED); 299 300 /* if we want promiscuous mode, set the allframes bit */ 301 if (ifp->if_flags & IFF_PROMISC) 302 CUE_SETBIT(sc, CUE_ETHCTL, CUE_ETHCTL_PROMISC); 303 else 304 CUE_CLRBIT(sc, CUE_ETHCTL, CUE_ETHCTL_PROMISC); 305 306 /* write multicast hash-bits */ 307 cue_setmulti(ue); 308 } 309 310 static void 311 cue_setmulti(struct usb_ether *ue) 312 { 313 struct cue_softc *sc = uether_getsc(ue); 314 struct ifnet *ifp = uether_getifp(ue); 315 struct ifmultiaddr *ifma; 316 uint32_t h = 0, i; 317 uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; 318 319 CUE_LOCK_ASSERT(sc, MA_OWNED); 320 321 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 322 for (i = 0; i < 8; i++) 323 hashtbl[i] = 0xff; 324 cue_mem(sc, CUE_CMD_WRITESRAM, CUE_MCAST_TABLE_ADDR, 325 &hashtbl, 8); 326 return; 327 } 328 329 /* now program new ones */ 330 if_maddr_rlock(ifp); 331 CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) 332 { 333 if (ifma->ifma_addr->sa_family != AF_LINK) 334 continue; 335 h = cue_mchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 336 hashtbl[h >> 3] |= 1 << (h & 0x7); 337 } 338 if_maddr_runlock(ifp); 339 340 /* 341 * Also include the broadcast address in the filter 342 * so we can receive broadcast frames. 343 */ 344 if (ifp->if_flags & IFF_BROADCAST) { 345 h = cue_mchash(ifp->if_broadcastaddr); 346 hashtbl[h >> 3] |= 1 << (h & 0x7); 347 } 348 349 cue_mem(sc, CUE_CMD_WRITESRAM, CUE_MCAST_TABLE_ADDR, &hashtbl, 8); 350 } 351 352 static void 353 cue_reset(struct cue_softc *sc) 354 { 355 struct usb_device_request req; 356 357 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 358 req.bRequest = CUE_CMD_RESET; 359 USETW(req.wValue, 0); 360 USETW(req.wIndex, 0); 361 USETW(req.wLength, 0); 362 363 if (uether_do_request(&sc->sc_ue, &req, NULL, 1000)) { 364 /* ignore any errors */ 365 } 366 367 /* 368 * wait a little while for the chip to get its brains in order: 369 */ 370 uether_pause(&sc->sc_ue, hz / 100); 371 } 372 373 static void 374 cue_attach_post(struct usb_ether *ue) 375 { 376 struct cue_softc *sc = uether_getsc(ue); 377 378 cue_getmac(sc, ue->ue_eaddr); 379 } 380 381 static int 382 cue_probe(device_t dev) 383 { 384 struct usb_attach_arg *uaa = device_get_ivars(dev); 385 386 if (uaa->usb_mode != USB_MODE_HOST) 387 return (ENXIO); 388 if (uaa->info.bConfigIndex != CUE_CONFIG_IDX) 389 return (ENXIO); 390 if (uaa->info.bIfaceIndex != CUE_IFACE_IDX) 391 return (ENXIO); 392 393 return (usbd_lookup_id_by_uaa(cue_devs, sizeof(cue_devs), uaa)); 394 } 395 396 /* 397 * Attach the interface. Allocate softc structures, do ifmedia 398 * setup and ethernet/BPF attach. 399 */ 400 static int 401 cue_attach(device_t dev) 402 { 403 struct usb_attach_arg *uaa = device_get_ivars(dev); 404 struct cue_softc *sc = device_get_softc(dev); 405 struct usb_ether *ue = &sc->sc_ue; 406 uint8_t iface_index; 407 int error; 408 409 device_set_usb_desc(dev); 410 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 411 412 iface_index = CUE_IFACE_IDX; 413 error = usbd_transfer_setup(uaa->device, &iface_index, 414 sc->sc_xfer, cue_config, CUE_N_TRANSFER, sc, &sc->sc_mtx); 415 if (error) { 416 device_printf(dev, "allocating USB transfers failed\n"); 417 goto detach; 418 } 419 420 ue->ue_sc = sc; 421 ue->ue_dev = dev; 422 ue->ue_udev = uaa->device; 423 ue->ue_mtx = &sc->sc_mtx; 424 ue->ue_methods = &cue_ue_methods; 425 426 error = uether_ifattach(ue); 427 if (error) { 428 device_printf(dev, "could not attach interface\n"); 429 goto detach; 430 } 431 return (0); /* success */ 432 433 detach: 434 cue_detach(dev); 435 return (ENXIO); /* failure */ 436 } 437 438 static int 439 cue_detach(device_t dev) 440 { 441 struct cue_softc *sc = device_get_softc(dev); 442 struct usb_ether *ue = &sc->sc_ue; 443 444 usbd_transfer_unsetup(sc->sc_xfer, CUE_N_TRANSFER); 445 uether_ifdetach(ue); 446 mtx_destroy(&sc->sc_mtx); 447 448 return (0); 449 } 450 451 static void 452 cue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 453 { 454 struct cue_softc *sc = usbd_xfer_softc(xfer); 455 struct usb_ether *ue = &sc->sc_ue; 456 struct ifnet *ifp = uether_getifp(ue); 457 struct usb_page_cache *pc; 458 uint8_t buf[2]; 459 int len; 460 int actlen; 461 462 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 463 464 switch (USB_GET_STATE(xfer)) { 465 case USB_ST_TRANSFERRED: 466 467 if (actlen <= (int)(2 + sizeof(struct ether_header))) { 468 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 469 goto tr_setup; 470 } 471 pc = usbd_xfer_get_frame(xfer, 0); 472 usbd_copy_out(pc, 0, buf, 2); 473 actlen -= 2; 474 len = buf[0] | (buf[1] << 8); 475 len = min(actlen, len); 476 477 uether_rxbuf(ue, pc, 2, len); 478 /* FALLTHROUGH */ 479 case USB_ST_SETUP: 480 tr_setup: 481 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 482 usbd_transfer_submit(xfer); 483 uether_rxflush(ue); 484 return; 485 486 default: /* Error */ 487 DPRINTF("bulk read error, %s\n", 488 usbd_errstr(error)); 489 490 if (error != USB_ERR_CANCELLED) { 491 /* try to clear stall first */ 492 usbd_xfer_set_stall(xfer); 493 goto tr_setup; 494 } 495 return; 496 497 } 498 } 499 500 static void 501 cue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 502 { 503 struct cue_softc *sc = usbd_xfer_softc(xfer); 504 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 505 struct usb_page_cache *pc; 506 struct mbuf *m; 507 uint8_t buf[2]; 508 509 switch (USB_GET_STATE(xfer)) { 510 case USB_ST_TRANSFERRED: 511 DPRINTFN(11, "transfer complete\n"); 512 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 513 514 /* FALLTHROUGH */ 515 case USB_ST_SETUP: 516 tr_setup: 517 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 518 519 if (m == NULL) 520 return; 521 if (m->m_pkthdr.len > MCLBYTES) 522 m->m_pkthdr.len = MCLBYTES; 523 usbd_xfer_set_frame_len(xfer, 0, (m->m_pkthdr.len + 2)); 524 525 /* the first two bytes are the frame length */ 526 527 buf[0] = (uint8_t)(m->m_pkthdr.len); 528 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8); 529 530 pc = usbd_xfer_get_frame(xfer, 0); 531 usbd_copy_in(pc, 0, buf, 2); 532 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); 533 534 /* 535 * If there's a BPF listener, bounce a copy of this frame 536 * to him. 537 */ 538 BPF_MTAP(ifp, m); 539 540 m_freem(m); 541 542 usbd_transfer_submit(xfer); 543 544 return; 545 546 default: /* Error */ 547 DPRINTFN(11, "transfer error, %s\n", 548 usbd_errstr(error)); 549 550 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 551 552 if (error != USB_ERR_CANCELLED) { 553 /* try to clear stall first */ 554 usbd_xfer_set_stall(xfer); 555 goto tr_setup; 556 } 557 return; 558 } 559 } 560 561 static void 562 cue_tick(struct usb_ether *ue) 563 { 564 struct cue_softc *sc = uether_getsc(ue); 565 struct ifnet *ifp = uether_getifp(ue); 566 567 CUE_LOCK_ASSERT(sc, MA_OWNED); 568 569 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, cue_csr_read_2(sc, CUE_TX_SINGLECOLL)); 570 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, cue_csr_read_2(sc, CUE_TX_MULTICOLL)); 571 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, cue_csr_read_2(sc, CUE_TX_EXCESSCOLL)); 572 573 if (cue_csr_read_2(sc, CUE_RX_FRAMEERR)) 574 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 575 } 576 577 static void 578 cue_start(struct usb_ether *ue) 579 { 580 struct cue_softc *sc = uether_getsc(ue); 581 582 /* 583 * start the USB transfers, if not already started: 584 */ 585 usbd_transfer_start(sc->sc_xfer[CUE_BULK_DT_RD]); 586 usbd_transfer_start(sc->sc_xfer[CUE_BULK_DT_WR]); 587 } 588 589 static void 590 cue_init(struct usb_ether *ue) 591 { 592 struct cue_softc *sc = uether_getsc(ue); 593 struct ifnet *ifp = uether_getifp(ue); 594 int i; 595 596 CUE_LOCK_ASSERT(sc, MA_OWNED); 597 598 /* 599 * Cancel pending I/O and free all RX/TX buffers. 600 */ 601 cue_stop(ue); 602 #if 0 603 cue_reset(sc); 604 #endif 605 /* Set MAC address */ 606 for (i = 0; i < ETHER_ADDR_LEN; i++) 607 cue_csr_write_1(sc, CUE_PAR0 - i, IF_LLADDR(ifp)[i]); 608 609 /* Enable RX logic. */ 610 cue_csr_write_1(sc, CUE_ETHCTL, CUE_ETHCTL_RX_ON | CUE_ETHCTL_MCAST_ON); 611 612 /* Load the multicast filter */ 613 cue_setpromisc(ue); 614 615 /* 616 * Set the number of RX and TX buffers that we want 617 * to reserve inside the ASIC. 618 */ 619 cue_csr_write_1(sc, CUE_RX_BUFPKTS, CUE_RX_FRAMES); 620 cue_csr_write_1(sc, CUE_TX_BUFPKTS, CUE_TX_FRAMES); 621 622 /* Set advanced operation modes. */ 623 cue_csr_write_1(sc, CUE_ADVANCED_OPMODES, 624 CUE_AOP_EMBED_RXLEN | 0x01);/* 1 wait state */ 625 626 /* Program the LED operation. */ 627 cue_csr_write_1(sc, CUE_LEDCTL, CUE_LEDCTL_FOLLOW_LINK); 628 629 usbd_xfer_set_stall(sc->sc_xfer[CUE_BULK_DT_WR]); 630 631 ifp->if_drv_flags |= IFF_DRV_RUNNING; 632 cue_start(ue); 633 } 634 635 /* 636 * Stop the adapter and free any mbufs allocated to the 637 * RX and TX lists. 638 */ 639 static void 640 cue_stop(struct usb_ether *ue) 641 { 642 struct cue_softc *sc = uether_getsc(ue); 643 struct ifnet *ifp = uether_getifp(ue); 644 645 CUE_LOCK_ASSERT(sc, MA_OWNED); 646 647 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 648 649 /* 650 * stop all the transfers, if not already stopped: 651 */ 652 usbd_transfer_stop(sc->sc_xfer[CUE_BULK_DT_WR]); 653 usbd_transfer_stop(sc->sc_xfer[CUE_BULK_DT_RD]); 654 655 cue_csr_write_1(sc, CUE_ETHCTL, 0); 656 cue_reset(sc); 657 } 658