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 /* 36 * Kawasaki LSI KL5KUSB101B USB to ethernet adapter driver. 37 * 38 * Written by Bill Paul <wpaul@ee.columbia.edu> 39 * Electrical Engineering Department 40 * Columbia University, New York City 41 */ 42 43 /* 44 * The KLSI USB to ethernet adapter chip contains an USB serial interface, 45 * ethernet MAC and embedded microcontroller (called the QT Engine). 46 * The chip must have firmware loaded into it before it will operate. 47 * Packets are passed between the chip and host via bulk transfers. 48 * There is an interrupt endpoint mentioned in the software spec, however 49 * it's currently unused. This device is 10Mbps half-duplex only, hence 50 * there is no media selection logic. The MAC supports a 128 entry 51 * multicast filter, though the exact size of the filter can depend 52 * on the firmware. Curiously, while the software spec describes various 53 * ethernet statistics counters, my sample adapter and firmware combination 54 * claims not to support any statistics counters at all. 55 * 56 * Note that once we load the firmware in the device, we have to be 57 * careful not to load it again: if you restart your computer but 58 * leave the adapter attached to the USB controller, it may remain 59 * powered on and retain its firmware. In this case, we don't need 60 * to load the firmware a second time. 61 * 62 * Special thanks to Rob Furr for providing an ADS Technologies 63 * adapter for development and testing. No monkeys were harmed during 64 * the development of this driver. 65 */ 66 67 #include <sys/stdint.h> 68 #include <sys/stddef.h> 69 #include <sys/param.h> 70 #include <sys/queue.h> 71 #include <sys/types.h> 72 #include <sys/systm.h> 73 #include <sys/socket.h> 74 #include <sys/kernel.h> 75 #include <sys/bus.h> 76 #include <sys/module.h> 77 #include <sys/lock.h> 78 #include <sys/mutex.h> 79 #include <sys/condvar.h> 80 #include <sys/sysctl.h> 81 #include <sys/sx.h> 82 #include <sys/unistd.h> 83 #include <sys/callout.h> 84 #include <sys/malloc.h> 85 #include <sys/priv.h> 86 87 #include <net/if.h> 88 #include <net/if_var.h> 89 90 #include <dev/usb/usb.h> 91 #include <dev/usb/usbdi.h> 92 #include <dev/usb/usbdi_util.h> 93 #include "usbdevs.h" 94 95 #define USB_DEBUG_VAR kue_debug 96 #include <dev/usb/usb_debug.h> 97 #include <dev/usb/usb_process.h> 98 99 #include <dev/usb/net/usb_ethernet.h> 100 #include <dev/usb/net/if_kuereg.h> 101 #include <dev/usb/net/if_kuefw.h> 102 103 /* 104 * Various supported device vendors/products. 105 */ 106 static const STRUCT_USB_HOST_ID kue_devs[] = { 107 #define KUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } 108 KUE_DEV(3COM, 3C19250), 109 KUE_DEV(3COM, 3C460), 110 KUE_DEV(ABOCOM, URE450), 111 KUE_DEV(ADS, UBS10BT), 112 KUE_DEV(ADS, UBS10BTX), 113 KUE_DEV(AOX, USB101), 114 KUE_DEV(ASANTE, EA), 115 KUE_DEV(ATEN, DSB650C), 116 KUE_DEV(ATEN, UC10T), 117 KUE_DEV(COREGA, ETHER_USB_T), 118 KUE_DEV(DLINK, DSB650C), 119 KUE_DEV(ENTREGA, E45), 120 KUE_DEV(ENTREGA, XX1), 121 KUE_DEV(ENTREGA, XX2), 122 KUE_DEV(IODATA, USBETT), 123 KUE_DEV(JATON, EDA), 124 KUE_DEV(KINGSTON, XX1), 125 KUE_DEV(KLSI, DUH3E10BT), 126 KUE_DEV(KLSI, DUH3E10BTN), 127 KUE_DEV(LINKSYS, USB10T), 128 KUE_DEV(MOBILITY, EA), 129 KUE_DEV(NETGEAR, EA101), 130 KUE_DEV(NETGEAR, EA101X), 131 KUE_DEV(PERACOM, ENET), 132 KUE_DEV(PERACOM, ENET2), 133 KUE_DEV(PERACOM, ENET3), 134 KUE_DEV(PORTGEAR, EA8), 135 KUE_DEV(PORTGEAR, EA9), 136 KUE_DEV(PORTSMITH, EEA), 137 KUE_DEV(SHARK, PA), 138 KUE_DEV(SILICOM, GPE), 139 KUE_DEV(SILICOM, U2E), 140 KUE_DEV(SMC, 2102USB), 141 #undef KUE_DEV 142 }; 143 144 /* prototypes */ 145 146 static device_probe_t kue_probe; 147 static device_attach_t kue_attach; 148 static device_detach_t kue_detach; 149 150 static usb_callback_t kue_bulk_read_callback; 151 static usb_callback_t kue_bulk_write_callback; 152 153 static uether_fn_t kue_attach_post; 154 static uether_fn_t kue_init; 155 static uether_fn_t kue_stop; 156 static uether_fn_t kue_start; 157 static uether_fn_t kue_setmulti; 158 static uether_fn_t kue_setpromisc; 159 160 static int kue_do_request(struct kue_softc *, 161 struct usb_device_request *, void *); 162 static int kue_setword(struct kue_softc *, uint8_t, uint16_t); 163 static int kue_ctl(struct kue_softc *, uint8_t, uint8_t, uint16_t, 164 void *, int); 165 static int kue_load_fw(struct kue_softc *); 166 static void kue_reset(struct kue_softc *); 167 168 #ifdef USB_DEBUG 169 static int kue_debug = 0; 170 171 static SYSCTL_NODE(_hw_usb, OID_AUTO, kue, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 172 "USB kue"); 173 SYSCTL_INT(_hw_usb_kue, OID_AUTO, debug, CTLFLAG_RWTUN, &kue_debug, 0, 174 "Debug level"); 175 #endif 176 177 static const struct usb_config kue_config[KUE_N_TRANSFER] = { 178 [KUE_BULK_DT_WR] = { 179 .type = UE_BULK, 180 .endpoint = UE_ADDR_ANY, 181 .direction = UE_DIR_OUT, 182 .bufsize = (MCLBYTES + 2 + 64), 183 .flags = {.pipe_bof = 1,}, 184 .callback = kue_bulk_write_callback, 185 .timeout = 10000, /* 10 seconds */ 186 }, 187 188 [KUE_BULK_DT_RD] = { 189 .type = UE_BULK, 190 .endpoint = UE_ADDR_ANY, 191 .direction = UE_DIR_IN, 192 .bufsize = (MCLBYTES + 2), 193 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 194 .callback = kue_bulk_read_callback, 195 .timeout = 0, /* no timeout */ 196 }, 197 }; 198 199 static device_method_t kue_methods[] = { 200 /* Device interface */ 201 DEVMETHOD(device_probe, kue_probe), 202 DEVMETHOD(device_attach, kue_attach), 203 DEVMETHOD(device_detach, kue_detach), 204 205 DEVMETHOD_END 206 }; 207 208 static driver_t kue_driver = { 209 .name = "kue", 210 .methods = kue_methods, 211 .size = sizeof(struct kue_softc), 212 }; 213 214 DRIVER_MODULE(kue, uhub, kue_driver, NULL, NULL); 215 MODULE_DEPEND(kue, uether, 1, 1, 1); 216 MODULE_DEPEND(kue, usb, 1, 1, 1); 217 MODULE_DEPEND(kue, ether, 1, 1, 1); 218 MODULE_VERSION(kue, 1); 219 USB_PNP_HOST_INFO(kue_devs); 220 221 static const struct usb_ether_methods kue_ue_methods = { 222 .ue_attach_post = kue_attach_post, 223 .ue_start = kue_start, 224 .ue_init = kue_init, 225 .ue_stop = kue_stop, 226 .ue_setmulti = kue_setmulti, 227 .ue_setpromisc = kue_setpromisc, 228 }; 229 230 /* 231 * We have a custom do_request function which is almost like the 232 * regular do_request function, except it has a much longer timeout. 233 * Why? Because we need to make requests over the control endpoint 234 * to download the firmware to the device, which can take longer 235 * than the default timeout. 236 */ 237 static int 238 kue_do_request(struct kue_softc *sc, struct usb_device_request *req, 239 void *data) 240 { 241 usb_error_t err; 242 243 err = uether_do_request(&sc->sc_ue, req, data, 60000); 244 245 return (err); 246 } 247 248 static int 249 kue_setword(struct kue_softc *sc, uint8_t breq, uint16_t word) 250 { 251 struct usb_device_request req; 252 253 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 254 req.bRequest = breq; 255 USETW(req.wValue, word); 256 USETW(req.wIndex, 0); 257 USETW(req.wLength, 0); 258 259 return (kue_do_request(sc, &req, NULL)); 260 } 261 262 static int 263 kue_ctl(struct kue_softc *sc, uint8_t rw, uint8_t breq, 264 uint16_t val, void *data, int len) 265 { 266 struct usb_device_request req; 267 268 if (rw == KUE_CTL_WRITE) 269 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 270 else 271 req.bmRequestType = UT_READ_VENDOR_DEVICE; 272 273 req.bRequest = breq; 274 USETW(req.wValue, val); 275 USETW(req.wIndex, 0); 276 USETW(req.wLength, len); 277 278 return (kue_do_request(sc, &req, data)); 279 } 280 281 static int 282 kue_load_fw(struct kue_softc *sc) 283 { 284 struct usb_device_descriptor *dd; 285 uint16_t hwrev; 286 usb_error_t err; 287 288 dd = usbd_get_device_descriptor(sc->sc_ue.ue_udev); 289 hwrev = UGETW(dd->bcdDevice); 290 291 /* 292 * First, check if we even need to load the firmware. 293 * If the device was still attached when the system was 294 * rebooted, it may already have firmware loaded in it. 295 * If this is the case, we don't need to do it again. 296 * And in fact, if we try to load it again, we'll hang, 297 * so we have to avoid this condition if we don't want 298 * to look stupid. 299 * 300 * We can test this quickly by checking the bcdRevision 301 * code. The NIC will return a different revision code if 302 * it's probed while the firmware is still loaded and 303 * running. 304 */ 305 if (hwrev == 0x0202) 306 return(0); 307 308 /* Load code segment */ 309 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 310 0, kue_code_seg, sizeof(kue_code_seg)); 311 if (err) { 312 device_printf(sc->sc_ue.ue_dev, "failed to load code segment: %s\n", 313 usbd_errstr(err)); 314 return(ENXIO); 315 } 316 317 /* Load fixup segment */ 318 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 319 0, kue_fix_seg, sizeof(kue_fix_seg)); 320 if (err) { 321 device_printf(sc->sc_ue.ue_dev, "failed to load fixup segment: %s\n", 322 usbd_errstr(err)); 323 return(ENXIO); 324 } 325 326 /* Send trigger command. */ 327 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 328 0, kue_trig_seg, sizeof(kue_trig_seg)); 329 if (err) { 330 device_printf(sc->sc_ue.ue_dev, "failed to load trigger segment: %s\n", 331 usbd_errstr(err)); 332 return(ENXIO); 333 } 334 335 return (0); 336 } 337 338 static void 339 kue_setpromisc(struct usb_ether *ue) 340 { 341 struct kue_softc *sc = uether_getsc(ue); 342 if_t ifp = uether_getifp(ue); 343 344 KUE_LOCK_ASSERT(sc, MA_OWNED); 345 346 if (if_getflags(ifp) & IFF_PROMISC) 347 sc->sc_rxfilt |= KUE_RXFILT_PROMISC; 348 else 349 sc->sc_rxfilt &= ~KUE_RXFILT_PROMISC; 350 351 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 352 } 353 354 static u_int 355 kue_copy_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt) 356 { 357 struct kue_softc *sc = arg; 358 359 if (cnt >= KUE_MCFILTCNT(sc)) 360 return (1); 361 362 memcpy(KUE_MCFILT(sc, cnt), LLADDR(sdl), ETHER_ADDR_LEN); 363 364 return (1); 365 } 366 367 static void 368 kue_setmulti(struct usb_ether *ue) 369 { 370 struct kue_softc *sc = uether_getsc(ue); 371 if_t ifp = uether_getifp(ue); 372 int i; 373 374 KUE_LOCK_ASSERT(sc, MA_OWNED); 375 376 if (if_getflags(ifp) & IFF_ALLMULTI || if_getflags(ifp) & IFF_PROMISC) { 377 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 378 sc->sc_rxfilt &= ~KUE_RXFILT_MULTICAST; 379 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 380 return; 381 } 382 383 sc->sc_rxfilt &= ~KUE_RXFILT_ALLMULTI; 384 385 i = if_foreach_llmaddr(ifp, kue_copy_maddr, sc); 386 387 if (i >= KUE_MCFILTCNT(sc)) 388 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 389 else { 390 sc->sc_rxfilt |= KUE_RXFILT_MULTICAST; 391 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS, 392 i, sc->sc_mcfilters, i * ETHER_ADDR_LEN); 393 } 394 395 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 396 } 397 398 /* 399 * Issue a SET_CONFIGURATION command to reset the MAC. This should be 400 * done after the firmware is loaded into the adapter in order to 401 * bring it into proper operation. 402 */ 403 static void 404 kue_reset(struct kue_softc *sc) 405 { 406 struct usb_config_descriptor *cd; 407 usb_error_t err; 408 409 cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev); 410 411 err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx, 412 cd->bConfigurationValue); 413 if (err) 414 DPRINTF("reset failed (ignored)\n"); 415 416 /* wait a little while for the chip to get its brains in order */ 417 uether_pause(&sc->sc_ue, hz / 100); 418 } 419 420 static void 421 kue_attach_post(struct usb_ether *ue) 422 { 423 struct kue_softc *sc = uether_getsc(ue); 424 int error; 425 426 /* load the firmware into the NIC */ 427 error = kue_load_fw(sc); 428 if (error) { 429 device_printf(sc->sc_ue.ue_dev, "could not load firmware\n"); 430 /* ignore the error */ 431 } 432 433 /* reset the adapter */ 434 kue_reset(sc); 435 436 /* read ethernet descriptor */ 437 kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR, 438 0, &sc->sc_desc, sizeof(sc->sc_desc)); 439 440 /* copy in ethernet address */ 441 memcpy(ue->ue_eaddr, sc->sc_desc.kue_macaddr, sizeof(ue->ue_eaddr)); 442 } 443 444 /* 445 * Probe for a KLSI chip. 446 */ 447 static int 448 kue_probe(device_t dev) 449 { 450 struct usb_attach_arg *uaa = device_get_ivars(dev); 451 452 if (uaa->usb_mode != USB_MODE_HOST) 453 return (ENXIO); 454 if (uaa->info.bConfigIndex != KUE_CONFIG_IDX) 455 return (ENXIO); 456 if (uaa->info.bIfaceIndex != KUE_IFACE_IDX) 457 return (ENXIO); 458 459 return (usbd_lookup_id_by_uaa(kue_devs, sizeof(kue_devs), uaa)); 460 } 461 462 /* 463 * Attach the interface. Allocate softc structures, do 464 * setup and ethernet/BPF attach. 465 */ 466 static int 467 kue_attach(device_t dev) 468 { 469 struct usb_attach_arg *uaa = device_get_ivars(dev); 470 struct kue_softc *sc = device_get_softc(dev); 471 struct usb_ether *ue = &sc->sc_ue; 472 uint8_t iface_index; 473 int error; 474 475 device_set_usb_desc(dev); 476 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 477 478 iface_index = KUE_IFACE_IDX; 479 error = usbd_transfer_setup(uaa->device, &iface_index, 480 sc->sc_xfer, kue_config, KUE_N_TRANSFER, sc, &sc->sc_mtx); 481 if (error) { 482 device_printf(dev, "allocating USB transfers failed\n"); 483 goto detach; 484 } 485 486 sc->sc_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN, 487 M_USBDEV, M_WAITOK); 488 if (sc->sc_mcfilters == NULL) { 489 device_printf(dev, "failed allocating USB memory\n"); 490 goto detach; 491 } 492 493 ue->ue_sc = sc; 494 ue->ue_dev = dev; 495 ue->ue_udev = uaa->device; 496 ue->ue_mtx = &sc->sc_mtx; 497 ue->ue_methods = &kue_ue_methods; 498 499 error = uether_ifattach(ue); 500 if (error) { 501 device_printf(dev, "could not attach interface\n"); 502 goto detach; 503 } 504 return (0); /* success */ 505 506 detach: 507 kue_detach(dev); 508 return (ENXIO); /* failure */ 509 } 510 511 static int 512 kue_detach(device_t dev) 513 { 514 struct kue_softc *sc = device_get_softc(dev); 515 struct usb_ether *ue = &sc->sc_ue; 516 517 usbd_transfer_unsetup(sc->sc_xfer, KUE_N_TRANSFER); 518 uether_ifdetach(ue); 519 mtx_destroy(&sc->sc_mtx); 520 free(sc->sc_mcfilters, M_USBDEV); 521 522 return (0); 523 } 524 525 /* 526 * A frame has been uploaded: pass the resulting mbuf chain up to 527 * the higher level protocols. 528 */ 529 static void 530 kue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 531 { 532 struct kue_softc *sc = usbd_xfer_softc(xfer); 533 struct usb_ether *ue = &sc->sc_ue; 534 if_t ifp = uether_getifp(ue); 535 struct usb_page_cache *pc; 536 uint8_t buf[2]; 537 int len; 538 int actlen; 539 540 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 541 542 switch (USB_GET_STATE(xfer)) { 543 case USB_ST_TRANSFERRED: 544 545 if (actlen <= (int)(2 + sizeof(struct ether_header))) { 546 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 547 goto tr_setup; 548 } 549 pc = usbd_xfer_get_frame(xfer, 0); 550 usbd_copy_out(pc, 0, buf, 2); 551 actlen -= 2; 552 len = buf[0] | (buf[1] << 8); 553 len = min(actlen, len); 554 555 uether_rxbuf(ue, pc, 2, len); 556 /* FALLTHROUGH */ 557 case USB_ST_SETUP: 558 tr_setup: 559 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 560 usbd_transfer_submit(xfer); 561 uether_rxflush(ue); 562 return; 563 564 default: /* Error */ 565 DPRINTF("bulk read error, %s\n", 566 usbd_errstr(error)); 567 568 if (error != USB_ERR_CANCELLED) { 569 /* try to clear stall first */ 570 usbd_xfer_set_stall(xfer); 571 goto tr_setup; 572 } 573 return; 574 } 575 } 576 577 static void 578 kue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 579 { 580 struct kue_softc *sc = usbd_xfer_softc(xfer); 581 if_t ifp = uether_getifp(&sc->sc_ue); 582 struct usb_page_cache *pc; 583 struct mbuf *m; 584 int total_len; 585 int temp_len; 586 uint8_t buf[2]; 587 588 switch (USB_GET_STATE(xfer)) { 589 case USB_ST_TRANSFERRED: 590 DPRINTFN(11, "transfer complete\n"); 591 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 592 593 /* FALLTHROUGH */ 594 case USB_ST_SETUP: 595 tr_setup: 596 m = if_dequeue(ifp); 597 598 if (m == NULL) 599 return; 600 if (m->m_pkthdr.len > MCLBYTES) 601 m->m_pkthdr.len = MCLBYTES; 602 temp_len = (m->m_pkthdr.len + 2); 603 total_len = (temp_len + (64 - (temp_len % 64))); 604 605 /* the first two bytes are the frame length */ 606 607 buf[0] = (uint8_t)(m->m_pkthdr.len); 608 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8); 609 610 pc = usbd_xfer_get_frame(xfer, 0); 611 usbd_copy_in(pc, 0, buf, 2); 612 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); 613 614 usbd_frame_zero(pc, temp_len, total_len - temp_len); 615 usbd_xfer_set_frame_len(xfer, 0, total_len); 616 617 /* 618 * if there's a BPF listener, bounce a copy 619 * of this frame to him: 620 */ 621 BPF_MTAP(ifp, m); 622 623 m_freem(m); 624 625 usbd_transfer_submit(xfer); 626 627 return; 628 629 default: /* Error */ 630 DPRINTFN(11, "transfer error, %s\n", 631 usbd_errstr(error)); 632 633 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 634 635 if (error != USB_ERR_CANCELLED) { 636 /* try to clear stall first */ 637 usbd_xfer_set_stall(xfer); 638 goto tr_setup; 639 } 640 return; 641 } 642 } 643 644 static void 645 kue_start(struct usb_ether *ue) 646 { 647 struct kue_softc *sc = uether_getsc(ue); 648 649 /* 650 * start the USB transfers, if not already started: 651 */ 652 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_RD]); 653 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_WR]); 654 } 655 656 static void 657 kue_init(struct usb_ether *ue) 658 { 659 struct kue_softc *sc = uether_getsc(ue); 660 if_t ifp = uether_getifp(ue); 661 662 KUE_LOCK_ASSERT(sc, MA_OWNED); 663 664 /* set MAC address */ 665 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC, 666 0, if_getlladdr(ifp), ETHER_ADDR_LEN); 667 668 /* I'm not sure how to tune these. */ 669 #if 0 670 /* 671 * Leave this one alone for now; setting it 672 * wrong causes lockups on some machines/controllers. 673 */ 674 kue_setword(sc, KUE_CMD_SET_SOFS, 1); 675 #endif 676 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64); 677 678 /* load the multicast filter */ 679 kue_setpromisc(ue); 680 681 usbd_xfer_set_stall(sc->sc_xfer[KUE_BULK_DT_WR]); 682 683 if_setdrvflagbits(ifp, IFF_DRV_RUNNING, 0); 684 kue_start(ue); 685 } 686 687 static void 688 kue_stop(struct usb_ether *ue) 689 { 690 struct kue_softc *sc = uether_getsc(ue); 691 if_t ifp = uether_getifp(ue); 692 693 KUE_LOCK_ASSERT(sc, MA_OWNED); 694 695 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING); 696 697 /* 698 * stop all the transfers, if not already stopped: 699 */ 700 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_WR]); 701 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_RD]); 702 } 703