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 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD$"); 35 36/* 37 * Kawasaki LSI KL5KUSB101B USB to ethernet adapter driver. 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 KLSI USB to ethernet adapter chip contains an USB serial interface, 46 * ethernet MAC and embedded microcontroller (called the QT Engine). 47 * The chip must have firmware loaded into it before it will operate. 48 * Packets are passed between the chip and host via bulk transfers. 49 * There is an interrupt endpoint mentioned in the software spec, however 50 * it's currently unused. This device is 10Mbps half-duplex only, hence 51 * there is no media selection logic. The MAC supports a 128 entry 52 * multicast filter, though the exact size of the filter can depend 53 * on the firmware. Curiously, while the software spec describes various 54 * ethernet statistics counters, my sample adapter and firmware combination 55 * claims not to support any statistics counters at all. 56 * 57 * Note that once we load the firmware in the device, we have to be 58 * careful not to load it again: if you restart your computer but 59 * leave the adapter attached to the USB controller, it may remain 60 * powered on and retain its firmware. In this case, we don't need 61 * to load the firmware a second time. 62 * 63 * Special thanks to Rob Furr for providing an ADS Technologies 64 * adapter for development and testing. No monkeys were harmed during 65 * the development of this driver. 66 */ 67 68#include <sys/stdint.h> 69#include <sys/stddef.h> 70#include <sys/param.h> 71#include <sys/queue.h> 72#include <sys/types.h> 73#include <sys/systm.h> 74#include <sys/socket.h> 75#include <sys/kernel.h> 76#include <sys/bus.h> 77#include <sys/module.h> 78#include <sys/lock.h> 79#include <sys/mutex.h> 80#include <sys/condvar.h> 81#include <sys/sysctl.h> 82#include <sys/sx.h> 83#include <sys/unistd.h> 84#include <sys/callout.h> 85#include <sys/malloc.h> 86#include <sys/priv.h> 87 88#include <net/if.h> 89#include <net/if_var.h> 90 91#include <dev/usb/usb.h> 92#include <dev/usb/usbdi.h> 93#include <dev/usb/usbdi_util.h> 94#include "usbdevs.h" 95 96#define USB_DEBUG_VAR kue_debug 97#include <dev/usb/usb_debug.h> 98#include <dev/usb/usb_process.h> 99 100#include <dev/usb/net/usb_ethernet.h> 101#include <dev/usb/net/if_kuereg.h> 102#include <dev/usb/net/if_kuefw.h> 103 104/* 105 * Various supported device vendors/products. 106 */ 107static const STRUCT_USB_HOST_ID kue_devs[] = { 108#define KUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } 109 KUE_DEV(3COM, 3C19250), 110 KUE_DEV(3COM, 3C460), 111 KUE_DEV(ABOCOM, URE450), 112 KUE_DEV(ADS, UBS10BT), 113 KUE_DEV(ADS, UBS10BTX), 114 KUE_DEV(AOX, USB101), 115 KUE_DEV(ASANTE, EA), 116 KUE_DEV(ATEN, DSB650C), 117 KUE_DEV(ATEN, UC10T), 118 KUE_DEV(COREGA, ETHER_USB_T), 119 KUE_DEV(DLINK, DSB650C), 120 KUE_DEV(ENTREGA, E45), 121 KUE_DEV(ENTREGA, XX1), 122 KUE_DEV(ENTREGA, XX2), 123 KUE_DEV(IODATA, USBETT), 124 KUE_DEV(JATON, EDA), 125 KUE_DEV(KINGSTON, XX1), 126 KUE_DEV(KLSI, DUH3E10BT), 127 KUE_DEV(KLSI, DUH3E10BTN), 128 KUE_DEV(LINKSYS, USB10T), 129 KUE_DEV(MOBILITY, EA), 130 KUE_DEV(NETGEAR, EA101), 131 KUE_DEV(NETGEAR, EA101X), 132 KUE_DEV(PERACOM, ENET), 133 KUE_DEV(PERACOM, ENET2), 134 KUE_DEV(PERACOM, ENET3), 135 KUE_DEV(PORTGEAR, EA8), 136 KUE_DEV(PORTGEAR, EA9), 137 KUE_DEV(PORTSMITH, EEA), 138 KUE_DEV(SHARK, PA), 139 KUE_DEV(SILICOM, GPE), 140 KUE_DEV(SILICOM, U2E), 141 KUE_DEV(SMC, 2102USB), 142#undef KUE_DEV 143}; 144 145/* prototypes */ 146 147static device_probe_t kue_probe; 148static device_attach_t kue_attach; 149static device_detach_t kue_detach; 150 151static usb_callback_t kue_bulk_read_callback; 152static usb_callback_t kue_bulk_write_callback; 153 154static uether_fn_t kue_attach_post; 155static uether_fn_t kue_init; 156static uether_fn_t kue_stop; 157static uether_fn_t kue_start; 158static uether_fn_t kue_setmulti; 159static uether_fn_t kue_setpromisc; 160 161static int kue_do_request(struct kue_softc *, 162 struct usb_device_request *, void *); 163static int kue_setword(struct kue_softc *, uint8_t, uint16_t); 164static int kue_ctl(struct kue_softc *, uint8_t, uint8_t, uint16_t, 165 void *, int); 166static int kue_load_fw(struct kue_softc *); 167static void kue_reset(struct kue_softc *); 168 169#ifdef USB_DEBUG 170static int kue_debug = 0; 171 172static SYSCTL_NODE(_hw_usb, OID_AUTO, kue, CTLFLAG_RW, 0, "USB kue"); 173SYSCTL_INT(_hw_usb_kue, OID_AUTO, debug, CTLFLAG_RWTUN, &kue_debug, 0, 174 "Debug level"); 175#endif 176 177static const struct usb_config kue_config[KUE_N_TRANSFER] = { 178 179 [KUE_BULK_DT_WR] = { 180 .type = UE_BULK, 181 .endpoint = UE_ADDR_ANY, 182 .direction = UE_DIR_OUT, 183 .bufsize = (MCLBYTES + 2 + 64), 184 .flags = {.pipe_bof = 1,}, 185 .callback = kue_bulk_write_callback, 186 .timeout = 10000, /* 10 seconds */ 187 }, 188 189 [KUE_BULK_DT_RD] = { 190 .type = UE_BULK, 191 .endpoint = UE_ADDR_ANY, 192 .direction = UE_DIR_IN, 193 .bufsize = (MCLBYTES + 2), 194 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 195 .callback = kue_bulk_read_callback, 196 .timeout = 0, /* no timeout */ 197 }, 198}; 199 200static device_method_t kue_methods[] = { 201 /* Device interface */ 202 DEVMETHOD(device_probe, kue_probe), 203 DEVMETHOD(device_attach, kue_attach), 204 DEVMETHOD(device_detach, kue_detach), 205 206 DEVMETHOD_END 207}; 208 209static driver_t kue_driver = { 210 .name = "kue", 211 .methods = kue_methods, 212 .size = sizeof(struct kue_softc), 213}; 214 215static devclass_t kue_devclass; 216 217DRIVER_MODULE(kue, uhub, kue_driver, kue_devclass, NULL, 0); 218MODULE_DEPEND(kue, uether, 1, 1, 1); 219MODULE_DEPEND(kue, usb, 1, 1, 1); 220MODULE_DEPEND(kue, ether, 1, 1, 1); 221MODULE_VERSION(kue, 1); 222USB_PNP_HOST_INFO(kue_devs); 223 224static const struct usb_ether_methods kue_ue_methods = { 225 .ue_attach_post = kue_attach_post, 226 .ue_start = kue_start, 227 .ue_init = kue_init, 228 .ue_stop = kue_stop, 229 .ue_setmulti = kue_setmulti, 230 .ue_setpromisc = kue_setpromisc, 231}; 232 233/* 234 * We have a custom do_request function which is almost like the 235 * regular do_request function, except it has a much longer timeout. 236 * Why? Because we need to make requests over the control endpoint 237 * to download the firmware to the device, which can take longer 238 * than the default timeout. 239 */ 240static int 241kue_do_request(struct kue_softc *sc, struct usb_device_request *req, 242 void *data) 243{ 244 usb_error_t err; 245 246 err = uether_do_request(&sc->sc_ue, req, data, 60000); 247 248 return (err); 249} 250 251static int 252kue_setword(struct kue_softc *sc, uint8_t breq, uint16_t word) 253{ 254 struct usb_device_request req; 255 256 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 257 req.bRequest = breq; 258 USETW(req.wValue, word); 259 USETW(req.wIndex, 0); 260 USETW(req.wLength, 0); 261 262 return (kue_do_request(sc, &req, NULL)); 263} 264 265static int 266kue_ctl(struct kue_softc *sc, uint8_t rw, uint8_t breq, 267 uint16_t val, void *data, int len) 268{ 269 struct usb_device_request req; 270 271 if (rw == KUE_CTL_WRITE) 272 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 273 else 274 req.bmRequestType = UT_READ_VENDOR_DEVICE; 275 276 277 req.bRequest = breq; 278 USETW(req.wValue, val); 279 USETW(req.wIndex, 0); 280 USETW(req.wLength, len); 281 282 return (kue_do_request(sc, &req, data)); 283} 284 285static int 286kue_load_fw(struct kue_softc *sc) 287{ 288 struct usb_device_descriptor *dd; 289 uint16_t hwrev; 290 usb_error_t err; 291 292 dd = usbd_get_device_descriptor(sc->sc_ue.ue_udev); 293 hwrev = UGETW(dd->bcdDevice); 294 295 /* 296 * First, check if we even need to load the firmware. 297 * If the device was still attached when the system was 298 * rebooted, it may already have firmware loaded in it. 299 * If this is the case, we don't need to do it again. 300 * And in fact, if we try to load it again, we'll hang, 301 * so we have to avoid this condition if we don't want 302 * to look stupid. 303 * 304 * We can test this quickly by checking the bcdRevision 305 * code. The NIC will return a different revision code if 306 * it's probed while the firmware is still loaded and 307 * running. 308 */ 309 if (hwrev == 0x0202) 310 return(0); 311 312 /* Load code segment */ 313 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 314 0, kue_code_seg, sizeof(kue_code_seg)); 315 if (err) { 316 device_printf(sc->sc_ue.ue_dev, "failed to load code segment: %s\n", 317 usbd_errstr(err)); 318 return(ENXIO); 319 } 320 321 /* Load fixup segment */ 322 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 323 0, kue_fix_seg, sizeof(kue_fix_seg)); 324 if (err) { 325 device_printf(sc->sc_ue.ue_dev, "failed to load fixup segment: %s\n", 326 usbd_errstr(err)); 327 return(ENXIO); 328 } 329 330 /* Send trigger command. */ 331 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 332 0, kue_trig_seg, sizeof(kue_trig_seg)); 333 if (err) { 334 device_printf(sc->sc_ue.ue_dev, "failed to load trigger segment: %s\n", 335 usbd_errstr(err)); 336 return(ENXIO); 337 } 338 339 return (0); 340} 341 342static void 343kue_setpromisc(struct usb_ether *ue) 344{ 345 struct kue_softc *sc = uether_getsc(ue); 346 struct ifnet *ifp = uether_getifp(ue); 347 348 KUE_LOCK_ASSERT(sc, MA_OWNED); 349 350 if (ifp->if_flags & IFF_PROMISC) 351 sc->sc_rxfilt |= KUE_RXFILT_PROMISC; 352 else 353 sc->sc_rxfilt &= ~KUE_RXFILT_PROMISC; 354 355 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 356} 357 358static void 359kue_setmulti(struct usb_ether *ue) 360{ 361 struct kue_softc *sc = uether_getsc(ue); 362 struct ifnet *ifp = uether_getifp(ue); 363 struct ifmultiaddr *ifma; 364 int i = 0; 365 366 KUE_LOCK_ASSERT(sc, MA_OWNED); 367 368 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 369 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 370 sc->sc_rxfilt &= ~KUE_RXFILT_MULTICAST; 371 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 372 return; 373 } 374 375 sc->sc_rxfilt &= ~KUE_RXFILT_ALLMULTI; 376 377 if_maddr_rlock(ifp); 378 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) 379 { 380 if (ifma->ifma_addr->sa_family != AF_LINK) 381 continue; 382 /* 383 * If there are too many addresses for the 384 * internal filter, switch over to allmulti mode. 385 */ 386 if (i == KUE_MCFILTCNT(sc)) 387 break; 388 memcpy(KUE_MCFILT(sc, i), 389 LLADDR((struct sockaddr_dl *)ifma->ifma_addr), 390 ETHER_ADDR_LEN); 391 i++; 392 } 393 if_maddr_runlock(ifp); 394 395 if (i == KUE_MCFILTCNT(sc)) 396 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 397 else { 398 sc->sc_rxfilt |= KUE_RXFILT_MULTICAST; 399 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS, 400 i, sc->sc_mcfilters, i * ETHER_ADDR_LEN); 401 } 402 403 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 404} 405 406/* 407 * Issue a SET_CONFIGURATION command to reset the MAC. This should be 408 * done after the firmware is loaded into the adapter in order to 409 * bring it into proper operation. 410 */ 411static void 412kue_reset(struct kue_softc *sc) 413{ 414 struct usb_config_descriptor *cd; 415 usb_error_t err; 416 417 cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev); 418 419 err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx, 420 cd->bConfigurationValue); 421 if (err) 422 DPRINTF("reset failed (ignored)\n"); 423 424 /* wait a little while for the chip to get its brains in order */ 425 uether_pause(&sc->sc_ue, hz / 100); 426} 427 428static void 429kue_attach_post(struct usb_ether *ue) 430{ 431 struct kue_softc *sc = uether_getsc(ue); 432 int error; 433 434 /* load the firmware into the NIC */ 435 error = kue_load_fw(sc); 436 if (error) { 437 device_printf(sc->sc_ue.ue_dev, "could not load firmware\n"); 438 /* ignore the error */ 439 } 440 441 /* reset the adapter */ 442 kue_reset(sc); 443 444 /* read ethernet descriptor */ 445 kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR, 446 0, &sc->sc_desc, sizeof(sc->sc_desc)); 447 448 /* copy in ethernet address */ 449 memcpy(ue->ue_eaddr, sc->sc_desc.kue_macaddr, sizeof(ue->ue_eaddr)); 450} 451 452/* 453 * Probe for a KLSI chip. 454 */ 455static int 456kue_probe(device_t dev) 457{ 458 struct usb_attach_arg *uaa = device_get_ivars(dev); 459 460 if (uaa->usb_mode != USB_MODE_HOST) 461 return (ENXIO); 462 if (uaa->info.bConfigIndex != KUE_CONFIG_IDX) 463 return (ENXIO); 464 if (uaa->info.bIfaceIndex != KUE_IFACE_IDX) 465 return (ENXIO); 466 467 return (usbd_lookup_id_by_uaa(kue_devs, sizeof(kue_devs), uaa)); 468} 469 470/* 471 * Attach the interface. Allocate softc structures, do 472 * setup and ethernet/BPF attach. 473 */ 474static int 475kue_attach(device_t dev) 476{ 477 struct usb_attach_arg *uaa = device_get_ivars(dev); 478 struct kue_softc *sc = device_get_softc(dev); 479 struct usb_ether *ue = &sc->sc_ue; 480 uint8_t iface_index; 481 int error; 482 483 device_set_usb_desc(dev); 484 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 485 486 iface_index = KUE_IFACE_IDX; 487 error = usbd_transfer_setup(uaa->device, &iface_index, 488 sc->sc_xfer, kue_config, KUE_N_TRANSFER, sc, &sc->sc_mtx); 489 if (error) { 490 device_printf(dev, "allocating USB transfers failed\n"); 491 goto detach; 492 } 493 494 sc->sc_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN, 495 M_USBDEV, M_WAITOK); 496 if (sc->sc_mcfilters == NULL) { 497 device_printf(dev, "failed allocating USB memory\n"); 498 goto detach; 499 } 500 501 ue->ue_sc = sc; 502 ue->ue_dev = dev; 503 ue->ue_udev = uaa->device; 504 ue->ue_mtx = &sc->sc_mtx; 505 ue->ue_methods = &kue_ue_methods; 506 507 error = uether_ifattach(ue); 508 if (error) { 509 device_printf(dev, "could not attach interface\n"); 510 goto detach; 511 } 512 return (0); /* success */ 513 514detach: 515 kue_detach(dev); 516 return (ENXIO); /* failure */ 517} 518 519static int 520kue_detach(device_t dev) 521{ 522 struct kue_softc *sc = device_get_softc(dev); 523 struct usb_ether *ue = &sc->sc_ue; 524 525 usbd_transfer_unsetup(sc->sc_xfer, KUE_N_TRANSFER); 526 uether_ifdetach(ue); 527 mtx_destroy(&sc->sc_mtx); 528 free(sc->sc_mcfilters, M_USBDEV); 529 530 return (0); 531} 532 533/* 534 * A frame has been uploaded: pass the resulting mbuf chain up to 535 * the higher level protocols. 536 */ 537static void 538kue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 539{ 540 struct kue_softc *sc = usbd_xfer_softc(xfer); 541 struct usb_ether *ue = &sc->sc_ue; 542 struct ifnet *ifp = uether_getifp(ue); 543 struct usb_page_cache *pc; 544 uint8_t buf[2]; 545 int len; 546 int actlen; 547 548 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 549 550 switch (USB_GET_STATE(xfer)) { 551 case USB_ST_TRANSFERRED: 552 553 if (actlen <= (int)(2 + sizeof(struct ether_header))) { 554 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 555 goto tr_setup; 556 } 557 pc = usbd_xfer_get_frame(xfer, 0); 558 usbd_copy_out(pc, 0, buf, 2); 559 actlen -= 2; 560 len = buf[0] | (buf[1] << 8); 561 len = min(actlen, len); 562 563 uether_rxbuf(ue, pc, 2, len); 564 /* FALLTHROUGH */ 565 case USB_ST_SETUP: 566tr_setup: 567 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 568 usbd_transfer_submit(xfer); 569 uether_rxflush(ue); 570 return; 571 572 default: /* Error */ 573 DPRINTF("bulk read error, %s\n", 574 usbd_errstr(error)); 575 576 if (error != USB_ERR_CANCELLED) { 577 /* try to clear stall first */ 578 usbd_xfer_set_stall(xfer); 579 goto tr_setup; 580 } 581 return; 582 583 } 584} 585 586static void 587kue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 588{ 589 struct kue_softc *sc = usbd_xfer_softc(xfer); 590 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 591 struct usb_page_cache *pc; 592 struct mbuf *m; 593 int total_len; 594 int temp_len; 595 uint8_t buf[2]; 596 597 switch (USB_GET_STATE(xfer)) { 598 case USB_ST_TRANSFERRED: 599 DPRINTFN(11, "transfer complete\n"); 600 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 601 602 /* FALLTHROUGH */ 603 case USB_ST_SETUP: 604tr_setup: 605 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 606 607 if (m == NULL) 608 return; 609 if (m->m_pkthdr.len > MCLBYTES) 610 m->m_pkthdr.len = MCLBYTES; 611 temp_len = (m->m_pkthdr.len + 2); 612 total_len = (temp_len + (64 - (temp_len % 64))); 613 614 /* the first two bytes are the frame length */ 615 616 buf[0] = (uint8_t)(m->m_pkthdr.len); 617 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8); 618 619 pc = usbd_xfer_get_frame(xfer, 0); 620 usbd_copy_in(pc, 0, buf, 2); 621 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); 622 623 usbd_frame_zero(pc, temp_len, total_len - temp_len); 624 usbd_xfer_set_frame_len(xfer, 0, total_len); 625 626 /* 627 * if there's a BPF listener, bounce a copy 628 * of this frame to him: 629 */ 630 BPF_MTAP(ifp, m); 631 632 m_freem(m); 633 634 usbd_transfer_submit(xfer); 635 636 return; 637 638 default: /* Error */ 639 DPRINTFN(11, "transfer error, %s\n", 640 usbd_errstr(error)); 641 642 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 643 644 if (error != USB_ERR_CANCELLED) { 645 /* try to clear stall first */ 646 usbd_xfer_set_stall(xfer); 647 goto tr_setup; 648 } 649 return; 650 651 } 652} 653 654static void 655kue_start(struct usb_ether *ue) 656{ 657 struct kue_softc *sc = uether_getsc(ue); 658 659 /* 660 * start the USB transfers, if not already started: 661 */ 662 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_RD]); 663 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_WR]); 664} 665 666static void 667kue_init(struct usb_ether *ue) 668{ 669 struct kue_softc *sc = uether_getsc(ue); 670 struct ifnet *ifp = uether_getifp(ue); 671 672 KUE_LOCK_ASSERT(sc, MA_OWNED); 673 674 /* set MAC address */ 675 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC, 676 0, IF_LLADDR(ifp), ETHER_ADDR_LEN); 677 678 /* I'm not sure how to tune these. */ 679#if 0 680 /* 681 * Leave this one alone for now; setting it 682 * wrong causes lockups on some machines/controllers. 683 */ 684 kue_setword(sc, KUE_CMD_SET_SOFS, 1); 685#endif 686 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64); 687 688 /* load the multicast filter */ 689 kue_setpromisc(ue); 690 691 usbd_xfer_set_stall(sc->sc_xfer[KUE_BULK_DT_WR]); 692 693 ifp->if_drv_flags |= IFF_DRV_RUNNING; 694 kue_start(ue); 695} 696 697static void 698kue_stop(struct usb_ether *ue) 699{ 700 struct kue_softc *sc = uether_getsc(ue); 701 struct ifnet *ifp = uether_getifp(ue); 702 703 KUE_LOCK_ASSERT(sc, MA_OWNED); 704 705 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 706 707 /* 708 * stop all the transfers, if not already stopped: 709 */ 710 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_WR]); 711 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_RD]); 712} 713