if_kue.c revision 330897
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: stable/11/sys/dev/usb/net/if_kue.c 330897 2018-03-14 03:19:51Z eadler $"); 37 38/* 39 * Kawasaki LSI KL5KUSB101B USB to ethernet adapter driver. 40 * 41 * Written by Bill Paul <wpaul@ee.columbia.edu> 42 * Electrical Engineering Department 43 * Columbia University, New York City 44 */ 45 46/* 47 * The KLSI USB to ethernet adapter chip contains an USB serial interface, 48 * ethernet MAC and embedded microcontroller (called the QT Engine). 49 * The chip must have firmware loaded into it before it will operate. 50 * Packets are passed between the chip and host via bulk transfers. 51 * There is an interrupt endpoint mentioned in the software spec, however 52 * it's currently unused. This device is 10Mbps half-duplex only, hence 53 * there is no media selection logic. The MAC supports a 128 entry 54 * multicast filter, though the exact size of the filter can depend 55 * on the firmware. Curiously, while the software spec describes various 56 * ethernet statistics counters, my sample adapter and firmware combination 57 * claims not to support any statistics counters at all. 58 * 59 * Note that once we load the firmware in the device, we have to be 60 * careful not to load it again: if you restart your computer but 61 * leave the adapter attached to the USB controller, it may remain 62 * powered on and retain its firmware. In this case, we don't need 63 * to load the firmware a second time. 64 * 65 * Special thanks to Rob Furr for providing an ADS Technologies 66 * adapter for development and testing. No monkeys were harmed during 67 * the development of this driver. 68 */ 69 70#include <sys/stdint.h> 71#include <sys/stddef.h> 72#include <sys/param.h> 73#include <sys/queue.h> 74#include <sys/types.h> 75#include <sys/systm.h> 76#include <sys/socket.h> 77#include <sys/kernel.h> 78#include <sys/bus.h> 79#include <sys/module.h> 80#include <sys/lock.h> 81#include <sys/mutex.h> 82#include <sys/condvar.h> 83#include <sys/sysctl.h> 84#include <sys/sx.h> 85#include <sys/unistd.h> 86#include <sys/callout.h> 87#include <sys/malloc.h> 88#include <sys/priv.h> 89 90#include <net/if.h> 91#include <net/if_var.h> 92 93#include <dev/usb/usb.h> 94#include <dev/usb/usbdi.h> 95#include <dev/usb/usbdi_util.h> 96#include "usbdevs.h" 97 98#define USB_DEBUG_VAR kue_debug 99#include <dev/usb/usb_debug.h> 100#include <dev/usb/usb_process.h> 101 102#include <dev/usb/net/usb_ethernet.h> 103#include <dev/usb/net/if_kuereg.h> 104#include <dev/usb/net/if_kuefw.h> 105 106/* 107 * Various supported device vendors/products. 108 */ 109static const STRUCT_USB_HOST_ID kue_devs[] = { 110#define KUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } 111 KUE_DEV(3COM, 3C19250), 112 KUE_DEV(3COM, 3C460), 113 KUE_DEV(ABOCOM, URE450), 114 KUE_DEV(ADS, UBS10BT), 115 KUE_DEV(ADS, UBS10BTX), 116 KUE_DEV(AOX, USB101), 117 KUE_DEV(ASANTE, EA), 118 KUE_DEV(ATEN, DSB650C), 119 KUE_DEV(ATEN, UC10T), 120 KUE_DEV(COREGA, ETHER_USB_T), 121 KUE_DEV(DLINK, DSB650C), 122 KUE_DEV(ENTREGA, E45), 123 KUE_DEV(ENTREGA, XX1), 124 KUE_DEV(ENTREGA, XX2), 125 KUE_DEV(IODATA, USBETT), 126 KUE_DEV(JATON, EDA), 127 KUE_DEV(KINGSTON, XX1), 128 KUE_DEV(KLSI, DUH3E10BT), 129 KUE_DEV(KLSI, DUH3E10BTN), 130 KUE_DEV(LINKSYS, USB10T), 131 KUE_DEV(MOBILITY, EA), 132 KUE_DEV(NETGEAR, EA101), 133 KUE_DEV(NETGEAR, EA101X), 134 KUE_DEV(PERACOM, ENET), 135 KUE_DEV(PERACOM, ENET2), 136 KUE_DEV(PERACOM, ENET3), 137 KUE_DEV(PORTGEAR, EA8), 138 KUE_DEV(PORTGEAR, EA9), 139 KUE_DEV(PORTSMITH, EEA), 140 KUE_DEV(SHARK, PA), 141 KUE_DEV(SILICOM, GPE), 142 KUE_DEV(SILICOM, U2E), 143 KUE_DEV(SMC, 2102USB), 144#undef KUE_DEV 145}; 146 147/* prototypes */ 148 149static device_probe_t kue_probe; 150static device_attach_t kue_attach; 151static device_detach_t kue_detach; 152 153static usb_callback_t kue_bulk_read_callback; 154static usb_callback_t kue_bulk_write_callback; 155 156static uether_fn_t kue_attach_post; 157static uether_fn_t kue_init; 158static uether_fn_t kue_stop; 159static uether_fn_t kue_start; 160static uether_fn_t kue_setmulti; 161static uether_fn_t kue_setpromisc; 162 163static int kue_do_request(struct kue_softc *, 164 struct usb_device_request *, void *); 165static int kue_setword(struct kue_softc *, uint8_t, uint16_t); 166static int kue_ctl(struct kue_softc *, uint8_t, uint8_t, uint16_t, 167 void *, int); 168static int kue_load_fw(struct kue_softc *); 169static void kue_reset(struct kue_softc *); 170 171#ifdef USB_DEBUG 172static int kue_debug = 0; 173 174static SYSCTL_NODE(_hw_usb, OID_AUTO, kue, CTLFLAG_RW, 0, "USB kue"); 175SYSCTL_INT(_hw_usb_kue, OID_AUTO, debug, CTLFLAG_RWTUN, &kue_debug, 0, 176 "Debug level"); 177#endif 178 179static const struct usb_config kue_config[KUE_N_TRANSFER] = { 180 181 [KUE_BULK_DT_WR] = { 182 .type = UE_BULK, 183 .endpoint = UE_ADDR_ANY, 184 .direction = UE_DIR_OUT, 185 .bufsize = (MCLBYTES + 2 + 64), 186 .flags = {.pipe_bof = 1,}, 187 .callback = kue_bulk_write_callback, 188 .timeout = 10000, /* 10 seconds */ 189 }, 190 191 [KUE_BULK_DT_RD] = { 192 .type = UE_BULK, 193 .endpoint = UE_ADDR_ANY, 194 .direction = UE_DIR_IN, 195 .bufsize = (MCLBYTES + 2), 196 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 197 .callback = kue_bulk_read_callback, 198 .timeout = 0, /* no timeout */ 199 }, 200}; 201 202static device_method_t kue_methods[] = { 203 /* Device interface */ 204 DEVMETHOD(device_probe, kue_probe), 205 DEVMETHOD(device_attach, kue_attach), 206 DEVMETHOD(device_detach, kue_detach), 207 208 DEVMETHOD_END 209}; 210 211static driver_t kue_driver = { 212 .name = "kue", 213 .methods = kue_methods, 214 .size = sizeof(struct kue_softc), 215}; 216 217static devclass_t kue_devclass; 218 219DRIVER_MODULE(kue, uhub, kue_driver, kue_devclass, NULL, 0); 220MODULE_DEPEND(kue, uether, 1, 1, 1); 221MODULE_DEPEND(kue, usb, 1, 1, 1); 222MODULE_DEPEND(kue, ether, 1, 1, 1); 223MODULE_VERSION(kue, 1); 224USB_PNP_HOST_INFO(kue_devs); 225 226static const struct usb_ether_methods kue_ue_methods = { 227 .ue_attach_post = kue_attach_post, 228 .ue_start = kue_start, 229 .ue_init = kue_init, 230 .ue_stop = kue_stop, 231 .ue_setmulti = kue_setmulti, 232 .ue_setpromisc = kue_setpromisc, 233}; 234 235/* 236 * We have a custom do_request function which is almost like the 237 * regular do_request function, except it has a much longer timeout. 238 * Why? Because we need to make requests over the control endpoint 239 * to download the firmware to the device, which can take longer 240 * than the default timeout. 241 */ 242static int 243kue_do_request(struct kue_softc *sc, struct usb_device_request *req, 244 void *data) 245{ 246 usb_error_t err; 247 248 err = uether_do_request(&sc->sc_ue, req, data, 60000); 249 250 return (err); 251} 252 253static int 254kue_setword(struct kue_softc *sc, uint8_t breq, uint16_t word) 255{ 256 struct usb_device_request req; 257 258 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 259 req.bRequest = breq; 260 USETW(req.wValue, word); 261 USETW(req.wIndex, 0); 262 USETW(req.wLength, 0); 263 264 return (kue_do_request(sc, &req, NULL)); 265} 266 267static int 268kue_ctl(struct kue_softc *sc, uint8_t rw, uint8_t breq, 269 uint16_t val, void *data, int len) 270{ 271 struct usb_device_request req; 272 273 if (rw == KUE_CTL_WRITE) 274 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 275 else 276 req.bmRequestType = UT_READ_VENDOR_DEVICE; 277 278 279 req.bRequest = breq; 280 USETW(req.wValue, val); 281 USETW(req.wIndex, 0); 282 USETW(req.wLength, len); 283 284 return (kue_do_request(sc, &req, data)); 285} 286 287static int 288kue_load_fw(struct kue_softc *sc) 289{ 290 struct usb_device_descriptor *dd; 291 uint16_t hwrev; 292 usb_error_t err; 293 294 dd = usbd_get_device_descriptor(sc->sc_ue.ue_udev); 295 hwrev = UGETW(dd->bcdDevice); 296 297 /* 298 * First, check if we even need to load the firmware. 299 * If the device was still attached when the system was 300 * rebooted, it may already have firmware loaded in it. 301 * If this is the case, we don't need to do it again. 302 * And in fact, if we try to load it again, we'll hang, 303 * so we have to avoid this condition if we don't want 304 * to look stupid. 305 * 306 * We can test this quickly by checking the bcdRevision 307 * code. The NIC will return a different revision code if 308 * it's probed while the firmware is still loaded and 309 * running. 310 */ 311 if (hwrev == 0x0202) 312 return(0); 313 314 /* Load code segment */ 315 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 316 0, kue_code_seg, sizeof(kue_code_seg)); 317 if (err) { 318 device_printf(sc->sc_ue.ue_dev, "failed to load code segment: %s\n", 319 usbd_errstr(err)); 320 return(ENXIO); 321 } 322 323 /* Load fixup segment */ 324 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 325 0, kue_fix_seg, sizeof(kue_fix_seg)); 326 if (err) { 327 device_printf(sc->sc_ue.ue_dev, "failed to load fixup segment: %s\n", 328 usbd_errstr(err)); 329 return(ENXIO); 330 } 331 332 /* Send trigger command. */ 333 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 334 0, kue_trig_seg, sizeof(kue_trig_seg)); 335 if (err) { 336 device_printf(sc->sc_ue.ue_dev, "failed to load trigger segment: %s\n", 337 usbd_errstr(err)); 338 return(ENXIO); 339 } 340 341 return (0); 342} 343 344static void 345kue_setpromisc(struct usb_ether *ue) 346{ 347 struct kue_softc *sc = uether_getsc(ue); 348 struct ifnet *ifp = uether_getifp(ue); 349 350 KUE_LOCK_ASSERT(sc, MA_OWNED); 351 352 if (ifp->if_flags & IFF_PROMISC) 353 sc->sc_rxfilt |= KUE_RXFILT_PROMISC; 354 else 355 sc->sc_rxfilt &= ~KUE_RXFILT_PROMISC; 356 357 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 358} 359 360static void 361kue_setmulti(struct usb_ether *ue) 362{ 363 struct kue_softc *sc = uether_getsc(ue); 364 struct ifnet *ifp = uether_getifp(ue); 365 struct ifmultiaddr *ifma; 366 int i = 0; 367 368 KUE_LOCK_ASSERT(sc, MA_OWNED); 369 370 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 371 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 372 sc->sc_rxfilt &= ~KUE_RXFILT_MULTICAST; 373 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 374 return; 375 } 376 377 sc->sc_rxfilt &= ~KUE_RXFILT_ALLMULTI; 378 379 if_maddr_rlock(ifp); 380 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) 381 { 382 if (ifma->ifma_addr->sa_family != AF_LINK) 383 continue; 384 /* 385 * If there are too many addresses for the 386 * internal filter, switch over to allmulti mode. 387 */ 388 if (i == KUE_MCFILTCNT(sc)) 389 break; 390 memcpy(KUE_MCFILT(sc, i), 391 LLADDR((struct sockaddr_dl *)ifma->ifma_addr), 392 ETHER_ADDR_LEN); 393 i++; 394 } 395 if_maddr_runlock(ifp); 396 397 if (i == KUE_MCFILTCNT(sc)) 398 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 399 else { 400 sc->sc_rxfilt |= KUE_RXFILT_MULTICAST; 401 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS, 402 i, sc->sc_mcfilters, i * ETHER_ADDR_LEN); 403 } 404 405 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 406} 407 408/* 409 * Issue a SET_CONFIGURATION command to reset the MAC. This should be 410 * done after the firmware is loaded into the adapter in order to 411 * bring it into proper operation. 412 */ 413static void 414kue_reset(struct kue_softc *sc) 415{ 416 struct usb_config_descriptor *cd; 417 usb_error_t err; 418 419 cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev); 420 421 err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx, 422 cd->bConfigurationValue); 423 if (err) 424 DPRINTF("reset failed (ignored)\n"); 425 426 /* wait a little while for the chip to get its brains in order */ 427 uether_pause(&sc->sc_ue, hz / 100); 428} 429 430static void 431kue_attach_post(struct usb_ether *ue) 432{ 433 struct kue_softc *sc = uether_getsc(ue); 434 int error; 435 436 /* load the firmware into the NIC */ 437 error = kue_load_fw(sc); 438 if (error) { 439 device_printf(sc->sc_ue.ue_dev, "could not load firmware\n"); 440 /* ignore the error */ 441 } 442 443 /* reset the adapter */ 444 kue_reset(sc); 445 446 /* read ethernet descriptor */ 447 kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR, 448 0, &sc->sc_desc, sizeof(sc->sc_desc)); 449 450 /* copy in ethernet address */ 451 memcpy(ue->ue_eaddr, sc->sc_desc.kue_macaddr, sizeof(ue->ue_eaddr)); 452} 453 454/* 455 * Probe for a KLSI chip. 456 */ 457static int 458kue_probe(device_t dev) 459{ 460 struct usb_attach_arg *uaa = device_get_ivars(dev); 461 462 if (uaa->usb_mode != USB_MODE_HOST) 463 return (ENXIO); 464 if (uaa->info.bConfigIndex != KUE_CONFIG_IDX) 465 return (ENXIO); 466 if (uaa->info.bIfaceIndex != KUE_IFACE_IDX) 467 return (ENXIO); 468 469 return (usbd_lookup_id_by_uaa(kue_devs, sizeof(kue_devs), uaa)); 470} 471 472/* 473 * Attach the interface. Allocate softc structures, do 474 * setup and ethernet/BPF attach. 475 */ 476static int 477kue_attach(device_t dev) 478{ 479 struct usb_attach_arg *uaa = device_get_ivars(dev); 480 struct kue_softc *sc = device_get_softc(dev); 481 struct usb_ether *ue = &sc->sc_ue; 482 uint8_t iface_index; 483 int error; 484 485 device_set_usb_desc(dev); 486 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 487 488 iface_index = KUE_IFACE_IDX; 489 error = usbd_transfer_setup(uaa->device, &iface_index, 490 sc->sc_xfer, kue_config, KUE_N_TRANSFER, sc, &sc->sc_mtx); 491 if (error) { 492 device_printf(dev, "allocating USB transfers failed\n"); 493 goto detach; 494 } 495 496 sc->sc_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN, 497 M_USBDEV, M_WAITOK); 498 if (sc->sc_mcfilters == NULL) { 499 device_printf(dev, "failed allocating USB memory\n"); 500 goto detach; 501 } 502 503 ue->ue_sc = sc; 504 ue->ue_dev = dev; 505 ue->ue_udev = uaa->device; 506 ue->ue_mtx = &sc->sc_mtx; 507 ue->ue_methods = &kue_ue_methods; 508 509 error = uether_ifattach(ue); 510 if (error) { 511 device_printf(dev, "could not attach interface\n"); 512 goto detach; 513 } 514 return (0); /* success */ 515 516detach: 517 kue_detach(dev); 518 return (ENXIO); /* failure */ 519} 520 521static int 522kue_detach(device_t dev) 523{ 524 struct kue_softc *sc = device_get_softc(dev); 525 struct usb_ether *ue = &sc->sc_ue; 526 527 usbd_transfer_unsetup(sc->sc_xfer, KUE_N_TRANSFER); 528 uether_ifdetach(ue); 529 mtx_destroy(&sc->sc_mtx); 530 free(sc->sc_mcfilters, M_USBDEV); 531 532 return (0); 533} 534 535/* 536 * A frame has been uploaded: pass the resulting mbuf chain up to 537 * the higher level protocols. 538 */ 539static void 540kue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 541{ 542 struct kue_softc *sc = usbd_xfer_softc(xfer); 543 struct usb_ether *ue = &sc->sc_ue; 544 struct ifnet *ifp = uether_getifp(ue); 545 struct usb_page_cache *pc; 546 uint8_t buf[2]; 547 int len; 548 int actlen; 549 550 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 551 552 switch (USB_GET_STATE(xfer)) { 553 case USB_ST_TRANSFERRED: 554 555 if (actlen <= (int)(2 + sizeof(struct ether_header))) { 556 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 557 goto tr_setup; 558 } 559 pc = usbd_xfer_get_frame(xfer, 0); 560 usbd_copy_out(pc, 0, buf, 2); 561 actlen -= 2; 562 len = buf[0] | (buf[1] << 8); 563 len = min(actlen, len); 564 565 uether_rxbuf(ue, pc, 2, len); 566 /* FALLTHROUGH */ 567 case USB_ST_SETUP: 568tr_setup: 569 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 570 usbd_transfer_submit(xfer); 571 uether_rxflush(ue); 572 return; 573 574 default: /* Error */ 575 DPRINTF("bulk read error, %s\n", 576 usbd_errstr(error)); 577 578 if (error != USB_ERR_CANCELLED) { 579 /* try to clear stall first */ 580 usbd_xfer_set_stall(xfer); 581 goto tr_setup; 582 } 583 return; 584 585 } 586} 587 588static void 589kue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 590{ 591 struct kue_softc *sc = usbd_xfer_softc(xfer); 592 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 593 struct usb_page_cache *pc; 594 struct mbuf *m; 595 int total_len; 596 int temp_len; 597 uint8_t buf[2]; 598 599 switch (USB_GET_STATE(xfer)) { 600 case USB_ST_TRANSFERRED: 601 DPRINTFN(11, "transfer complete\n"); 602 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 603 604 /* FALLTHROUGH */ 605 case USB_ST_SETUP: 606tr_setup: 607 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 608 609 if (m == NULL) 610 return; 611 if (m->m_pkthdr.len > MCLBYTES) 612 m->m_pkthdr.len = MCLBYTES; 613 temp_len = (m->m_pkthdr.len + 2); 614 total_len = (temp_len + (64 - (temp_len % 64))); 615 616 /* the first two bytes are the frame length */ 617 618 buf[0] = (uint8_t)(m->m_pkthdr.len); 619 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8); 620 621 pc = usbd_xfer_get_frame(xfer, 0); 622 usbd_copy_in(pc, 0, buf, 2); 623 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); 624 625 usbd_frame_zero(pc, temp_len, total_len - temp_len); 626 usbd_xfer_set_frame_len(xfer, 0, total_len); 627 628 /* 629 * if there's a BPF listener, bounce a copy 630 * of this frame to him: 631 */ 632 BPF_MTAP(ifp, m); 633 634 m_freem(m); 635 636 usbd_transfer_submit(xfer); 637 638 return; 639 640 default: /* Error */ 641 DPRINTFN(11, "transfer error, %s\n", 642 usbd_errstr(error)); 643 644 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 645 646 if (error != USB_ERR_CANCELLED) { 647 /* try to clear stall first */ 648 usbd_xfer_set_stall(xfer); 649 goto tr_setup; 650 } 651 return; 652 653 } 654} 655 656static void 657kue_start(struct usb_ether *ue) 658{ 659 struct kue_softc *sc = uether_getsc(ue); 660 661 /* 662 * start the USB transfers, if not already started: 663 */ 664 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_RD]); 665 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_WR]); 666} 667 668static void 669kue_init(struct usb_ether *ue) 670{ 671 struct kue_softc *sc = uether_getsc(ue); 672 struct ifnet *ifp = uether_getifp(ue); 673 674 KUE_LOCK_ASSERT(sc, MA_OWNED); 675 676 /* set MAC address */ 677 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC, 678 0, IF_LLADDR(ifp), ETHER_ADDR_LEN); 679 680 /* I'm not sure how to tune these. */ 681#if 0 682 /* 683 * Leave this one alone for now; setting it 684 * wrong causes lockups on some machines/controllers. 685 */ 686 kue_setword(sc, KUE_CMD_SET_SOFS, 1); 687#endif 688 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64); 689 690 /* load the multicast filter */ 691 kue_setpromisc(ue); 692 693 usbd_xfer_set_stall(sc->sc_xfer[KUE_BULK_DT_WR]); 694 695 ifp->if_drv_flags |= IFF_DRV_RUNNING; 696 kue_start(ue); 697} 698 699static void 700kue_stop(struct usb_ether *ue) 701{ 702 struct kue_softc *sc = uether_getsc(ue); 703 struct ifnet *ifp = uether_getifp(ue); 704 705 KUE_LOCK_ASSERT(sc, MA_OWNED); 706 707 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 708 709 /* 710 * stop all the transfers, if not already stopped: 711 */ 712 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_WR]); 713 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_RD]); 714} 715