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 * 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 */ 109 static 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 */ 148 149 static device_probe_t kue_probe; 150 static device_attach_t kue_attach; 151 static device_detach_t kue_detach; 152 153 static usb_callback_t kue_bulk_read_callback; 154 static usb_callback_t kue_bulk_write_callback; 155 156 static uether_fn_t kue_attach_post; 157 static uether_fn_t kue_init; 158 static uether_fn_t kue_stop; 159 static uether_fn_t kue_start; 160 static uether_fn_t kue_setmulti; 161 static uether_fn_t kue_setpromisc; 162 163 static int kue_do_request(struct kue_softc *, 164 struct usb_device_request *, void *); 165 static int kue_setword(struct kue_softc *, uint8_t, uint16_t); 166 static int kue_ctl(struct kue_softc *, uint8_t, uint8_t, uint16_t, 167 void *, int); 168 static int kue_load_fw(struct kue_softc *); 169 static void kue_reset(struct kue_softc *); 170 171 #ifdef USB_DEBUG 172 static int kue_debug = 0; 173 174 static SYSCTL_NODE(_hw_usb, OID_AUTO, kue, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 175 "USB kue"); 176 SYSCTL_INT(_hw_usb_kue, OID_AUTO, debug, CTLFLAG_RWTUN, &kue_debug, 0, 177 "Debug level"); 178 #endif 179 180 static const struct usb_config kue_config[KUE_N_TRANSFER] = { 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 }; 201 202 static 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 }; 210 211 static driver_t kue_driver = { 212 .name = "kue", 213 .methods = kue_methods, 214 .size = sizeof(struct kue_softc), 215 }; 216 217 static devclass_t kue_devclass; 218 219 DRIVER_MODULE(kue, uhub, kue_driver, kue_devclass, NULL, 0); 220 MODULE_DEPEND(kue, uether, 1, 1, 1); 221 MODULE_DEPEND(kue, usb, 1, 1, 1); 222 MODULE_DEPEND(kue, ether, 1, 1, 1); 223 MODULE_VERSION(kue, 1); 224 USB_PNP_HOST_INFO(kue_devs); 225 226 static 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 */ 242 static int 243 kue_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 } 252 253 static int 254 kue_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 } 266 267 static int 268 kue_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 req.bRequest = breq; 279 USETW(req.wValue, val); 280 USETW(req.wIndex, 0); 281 USETW(req.wLength, len); 282 283 return (kue_do_request(sc, &req, data)); 284 } 285 286 static int 287 kue_load_fw(struct kue_softc *sc) 288 { 289 struct usb_device_descriptor *dd; 290 uint16_t hwrev; 291 usb_error_t err; 292 293 dd = usbd_get_device_descriptor(sc->sc_ue.ue_udev); 294 hwrev = UGETW(dd->bcdDevice); 295 296 /* 297 * First, check if we even need to load the firmware. 298 * If the device was still attached when the system was 299 * rebooted, it may already have firmware loaded in it. 300 * If this is the case, we don't need to do it again. 301 * And in fact, if we try to load it again, we'll hang, 302 * so we have to avoid this condition if we don't want 303 * to look stupid. 304 * 305 * We can test this quickly by checking the bcdRevision 306 * code. The NIC will return a different revision code if 307 * it's probed while the firmware is still loaded and 308 * running. 309 */ 310 if (hwrev == 0x0202) 311 return(0); 312 313 /* Load code segment */ 314 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 315 0, kue_code_seg, sizeof(kue_code_seg)); 316 if (err) { 317 device_printf(sc->sc_ue.ue_dev, "failed to load code segment: %s\n", 318 usbd_errstr(err)); 319 return(ENXIO); 320 } 321 322 /* Load fixup segment */ 323 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 324 0, kue_fix_seg, sizeof(kue_fix_seg)); 325 if (err) { 326 device_printf(sc->sc_ue.ue_dev, "failed to load fixup segment: %s\n", 327 usbd_errstr(err)); 328 return(ENXIO); 329 } 330 331 /* Send trigger command. */ 332 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 333 0, kue_trig_seg, sizeof(kue_trig_seg)); 334 if (err) { 335 device_printf(sc->sc_ue.ue_dev, "failed to load trigger segment: %s\n", 336 usbd_errstr(err)); 337 return(ENXIO); 338 } 339 340 return (0); 341 } 342 343 static void 344 kue_setpromisc(struct usb_ether *ue) 345 { 346 struct kue_softc *sc = uether_getsc(ue); 347 struct ifnet *ifp = uether_getifp(ue); 348 349 KUE_LOCK_ASSERT(sc, MA_OWNED); 350 351 if (ifp->if_flags & IFF_PROMISC) 352 sc->sc_rxfilt |= KUE_RXFILT_PROMISC; 353 else 354 sc->sc_rxfilt &= ~KUE_RXFILT_PROMISC; 355 356 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 357 } 358 359 static u_int 360 kue_copy_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt) 361 { 362 struct kue_softc *sc = arg; 363 364 if (cnt >= KUE_MCFILTCNT(sc)) 365 return (1); 366 367 memcpy(KUE_MCFILT(sc, cnt), LLADDR(sdl), ETHER_ADDR_LEN); 368 369 return (1); 370 } 371 372 static void 373 kue_setmulti(struct usb_ether *ue) 374 { 375 struct kue_softc *sc = uether_getsc(ue); 376 struct ifnet *ifp = uether_getifp(ue); 377 int i; 378 379 KUE_LOCK_ASSERT(sc, MA_OWNED); 380 381 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 382 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 383 sc->sc_rxfilt &= ~KUE_RXFILT_MULTICAST; 384 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 385 return; 386 } 387 388 sc->sc_rxfilt &= ~KUE_RXFILT_ALLMULTI; 389 390 i = if_foreach_llmaddr(ifp, kue_copy_maddr, sc); 391 392 if (i >= KUE_MCFILTCNT(sc)) 393 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 394 else { 395 sc->sc_rxfilt |= KUE_RXFILT_MULTICAST; 396 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS, 397 i, sc->sc_mcfilters, i * ETHER_ADDR_LEN); 398 } 399 400 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 401 } 402 403 /* 404 * Issue a SET_CONFIGURATION command to reset the MAC. This should be 405 * done after the firmware is loaded into the adapter in order to 406 * bring it into proper operation. 407 */ 408 static void 409 kue_reset(struct kue_softc *sc) 410 { 411 struct usb_config_descriptor *cd; 412 usb_error_t err; 413 414 cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev); 415 416 err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx, 417 cd->bConfigurationValue); 418 if (err) 419 DPRINTF("reset failed (ignored)\n"); 420 421 /* wait a little while for the chip to get its brains in order */ 422 uether_pause(&sc->sc_ue, hz / 100); 423 } 424 425 static void 426 kue_attach_post(struct usb_ether *ue) 427 { 428 struct kue_softc *sc = uether_getsc(ue); 429 int error; 430 431 /* load the firmware into the NIC */ 432 error = kue_load_fw(sc); 433 if (error) { 434 device_printf(sc->sc_ue.ue_dev, "could not load firmware\n"); 435 /* ignore the error */ 436 } 437 438 /* reset the adapter */ 439 kue_reset(sc); 440 441 /* read ethernet descriptor */ 442 kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR, 443 0, &sc->sc_desc, sizeof(sc->sc_desc)); 444 445 /* copy in ethernet address */ 446 memcpy(ue->ue_eaddr, sc->sc_desc.kue_macaddr, sizeof(ue->ue_eaddr)); 447 } 448 449 /* 450 * Probe for a KLSI chip. 451 */ 452 static int 453 kue_probe(device_t dev) 454 { 455 struct usb_attach_arg *uaa = device_get_ivars(dev); 456 457 if (uaa->usb_mode != USB_MODE_HOST) 458 return (ENXIO); 459 if (uaa->info.bConfigIndex != KUE_CONFIG_IDX) 460 return (ENXIO); 461 if (uaa->info.bIfaceIndex != KUE_IFACE_IDX) 462 return (ENXIO); 463 464 return (usbd_lookup_id_by_uaa(kue_devs, sizeof(kue_devs), uaa)); 465 } 466 467 /* 468 * Attach the interface. Allocate softc structures, do 469 * setup and ethernet/BPF attach. 470 */ 471 static int 472 kue_attach(device_t dev) 473 { 474 struct usb_attach_arg *uaa = device_get_ivars(dev); 475 struct kue_softc *sc = device_get_softc(dev); 476 struct usb_ether *ue = &sc->sc_ue; 477 uint8_t iface_index; 478 int error; 479 480 device_set_usb_desc(dev); 481 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 482 483 iface_index = KUE_IFACE_IDX; 484 error = usbd_transfer_setup(uaa->device, &iface_index, 485 sc->sc_xfer, kue_config, KUE_N_TRANSFER, sc, &sc->sc_mtx); 486 if (error) { 487 device_printf(dev, "allocating USB transfers failed\n"); 488 goto detach; 489 } 490 491 sc->sc_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN, 492 M_USBDEV, M_WAITOK); 493 if (sc->sc_mcfilters == NULL) { 494 device_printf(dev, "failed allocating USB memory\n"); 495 goto detach; 496 } 497 498 ue->ue_sc = sc; 499 ue->ue_dev = dev; 500 ue->ue_udev = uaa->device; 501 ue->ue_mtx = &sc->sc_mtx; 502 ue->ue_methods = &kue_ue_methods; 503 504 error = uether_ifattach(ue); 505 if (error) { 506 device_printf(dev, "could not attach interface\n"); 507 goto detach; 508 } 509 return (0); /* success */ 510 511 detach: 512 kue_detach(dev); 513 return (ENXIO); /* failure */ 514 } 515 516 static int 517 kue_detach(device_t dev) 518 { 519 struct kue_softc *sc = device_get_softc(dev); 520 struct usb_ether *ue = &sc->sc_ue; 521 522 usbd_transfer_unsetup(sc->sc_xfer, KUE_N_TRANSFER); 523 uether_ifdetach(ue); 524 mtx_destroy(&sc->sc_mtx); 525 free(sc->sc_mcfilters, M_USBDEV); 526 527 return (0); 528 } 529 530 /* 531 * A frame has been uploaded: pass the resulting mbuf chain up to 532 * the higher level protocols. 533 */ 534 static void 535 kue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 536 { 537 struct kue_softc *sc = usbd_xfer_softc(xfer); 538 struct usb_ether *ue = &sc->sc_ue; 539 struct ifnet *ifp = uether_getifp(ue); 540 struct usb_page_cache *pc; 541 uint8_t buf[2]; 542 int len; 543 int actlen; 544 545 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 546 547 switch (USB_GET_STATE(xfer)) { 548 case USB_ST_TRANSFERRED: 549 550 if (actlen <= (int)(2 + sizeof(struct ether_header))) { 551 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 552 goto tr_setup; 553 } 554 pc = usbd_xfer_get_frame(xfer, 0); 555 usbd_copy_out(pc, 0, buf, 2); 556 actlen -= 2; 557 len = buf[0] | (buf[1] << 8); 558 len = min(actlen, len); 559 560 uether_rxbuf(ue, pc, 2, len); 561 /* FALLTHROUGH */ 562 case USB_ST_SETUP: 563 tr_setup: 564 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 565 usbd_transfer_submit(xfer); 566 uether_rxflush(ue); 567 return; 568 569 default: /* Error */ 570 DPRINTF("bulk read error, %s\n", 571 usbd_errstr(error)); 572 573 if (error != USB_ERR_CANCELLED) { 574 /* try to clear stall first */ 575 usbd_xfer_set_stall(xfer); 576 goto tr_setup; 577 } 578 return; 579 } 580 } 581 582 static void 583 kue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 584 { 585 struct kue_softc *sc = usbd_xfer_softc(xfer); 586 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 587 struct usb_page_cache *pc; 588 struct mbuf *m; 589 int total_len; 590 int temp_len; 591 uint8_t buf[2]; 592 593 switch (USB_GET_STATE(xfer)) { 594 case USB_ST_TRANSFERRED: 595 DPRINTFN(11, "transfer complete\n"); 596 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 597 598 /* FALLTHROUGH */ 599 case USB_ST_SETUP: 600 tr_setup: 601 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 602 603 if (m == NULL) 604 return; 605 if (m->m_pkthdr.len > MCLBYTES) 606 m->m_pkthdr.len = MCLBYTES; 607 temp_len = (m->m_pkthdr.len + 2); 608 total_len = (temp_len + (64 - (temp_len % 64))); 609 610 /* the first two bytes are the frame length */ 611 612 buf[0] = (uint8_t)(m->m_pkthdr.len); 613 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8); 614 615 pc = usbd_xfer_get_frame(xfer, 0); 616 usbd_copy_in(pc, 0, buf, 2); 617 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); 618 619 usbd_frame_zero(pc, temp_len, total_len - temp_len); 620 usbd_xfer_set_frame_len(xfer, 0, total_len); 621 622 /* 623 * if there's a BPF listener, bounce a copy 624 * of this frame to him: 625 */ 626 BPF_MTAP(ifp, m); 627 628 m_freem(m); 629 630 usbd_transfer_submit(xfer); 631 632 return; 633 634 default: /* Error */ 635 DPRINTFN(11, "transfer error, %s\n", 636 usbd_errstr(error)); 637 638 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 639 640 if (error != USB_ERR_CANCELLED) { 641 /* try to clear stall first */ 642 usbd_xfer_set_stall(xfer); 643 goto tr_setup; 644 } 645 return; 646 } 647 } 648 649 static void 650 kue_start(struct usb_ether *ue) 651 { 652 struct kue_softc *sc = uether_getsc(ue); 653 654 /* 655 * start the USB transfers, if not already started: 656 */ 657 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_RD]); 658 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_WR]); 659 } 660 661 static void 662 kue_init(struct usb_ether *ue) 663 { 664 struct kue_softc *sc = uether_getsc(ue); 665 struct ifnet *ifp = uether_getifp(ue); 666 667 KUE_LOCK_ASSERT(sc, MA_OWNED); 668 669 /* set MAC address */ 670 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC, 671 0, IF_LLADDR(ifp), ETHER_ADDR_LEN); 672 673 /* I'm not sure how to tune these. */ 674 #if 0 675 /* 676 * Leave this one alone for now; setting it 677 * wrong causes lockups on some machines/controllers. 678 */ 679 kue_setword(sc, KUE_CMD_SET_SOFS, 1); 680 #endif 681 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64); 682 683 /* load the multicast filter */ 684 kue_setpromisc(ue); 685 686 usbd_xfer_set_stall(sc->sc_xfer[KUE_BULK_DT_WR]); 687 688 ifp->if_drv_flags |= IFF_DRV_RUNNING; 689 kue_start(ue); 690 } 691 692 static void 693 kue_stop(struct usb_ether *ue) 694 { 695 struct kue_softc *sc = uether_getsc(ue); 696 struct ifnet *ifp = uether_getifp(ue); 697 698 KUE_LOCK_ASSERT(sc, MA_OWNED); 699 700 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 701 702 /* 703 * stop all the transfers, if not already stopped: 704 */ 705 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_WR]); 706 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_RD]); 707 } 708