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] = { 181 182 [KUE_BULK_DT_WR] = { 183 .type = UE_BULK, 184 .endpoint = UE_ADDR_ANY, 185 .direction = UE_DIR_OUT, 186 .bufsize = (MCLBYTES + 2 + 64), 187 .flags = {.pipe_bof = 1,}, 188 .callback = kue_bulk_write_callback, 189 .timeout = 10000, /* 10 seconds */ 190 }, 191 192 [KUE_BULK_DT_RD] = { 193 .type = UE_BULK, 194 .endpoint = UE_ADDR_ANY, 195 .direction = UE_DIR_IN, 196 .bufsize = (MCLBYTES + 2), 197 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 198 .callback = kue_bulk_read_callback, 199 .timeout = 0, /* no timeout */ 200 }, 201 }; 202 203 static device_method_t kue_methods[] = { 204 /* Device interface */ 205 DEVMETHOD(device_probe, kue_probe), 206 DEVMETHOD(device_attach, kue_attach), 207 DEVMETHOD(device_detach, kue_detach), 208 209 DEVMETHOD_END 210 }; 211 212 static driver_t kue_driver = { 213 .name = "kue", 214 .methods = kue_methods, 215 .size = sizeof(struct kue_softc), 216 }; 217 218 static devclass_t kue_devclass; 219 220 DRIVER_MODULE(kue, uhub, kue_driver, kue_devclass, NULL, 0); 221 MODULE_DEPEND(kue, uether, 1, 1, 1); 222 MODULE_DEPEND(kue, usb, 1, 1, 1); 223 MODULE_DEPEND(kue, ether, 1, 1, 1); 224 MODULE_VERSION(kue, 1); 225 USB_PNP_HOST_INFO(kue_devs); 226 227 static const struct usb_ether_methods kue_ue_methods = { 228 .ue_attach_post = kue_attach_post, 229 .ue_start = kue_start, 230 .ue_init = kue_init, 231 .ue_stop = kue_stop, 232 .ue_setmulti = kue_setmulti, 233 .ue_setpromisc = kue_setpromisc, 234 }; 235 236 /* 237 * We have a custom do_request function which is almost like the 238 * regular do_request function, except it has a much longer timeout. 239 * Why? Because we need to make requests over the control endpoint 240 * to download the firmware to the device, which can take longer 241 * than the default timeout. 242 */ 243 static int 244 kue_do_request(struct kue_softc *sc, struct usb_device_request *req, 245 void *data) 246 { 247 usb_error_t err; 248 249 err = uether_do_request(&sc->sc_ue, req, data, 60000); 250 251 return (err); 252 } 253 254 static int 255 kue_setword(struct kue_softc *sc, uint8_t breq, uint16_t word) 256 { 257 struct usb_device_request req; 258 259 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 260 req.bRequest = breq; 261 USETW(req.wValue, word); 262 USETW(req.wIndex, 0); 263 USETW(req.wLength, 0); 264 265 return (kue_do_request(sc, &req, NULL)); 266 } 267 268 static int 269 kue_ctl(struct kue_softc *sc, uint8_t rw, uint8_t breq, 270 uint16_t val, void *data, int len) 271 { 272 struct usb_device_request req; 273 274 if (rw == KUE_CTL_WRITE) 275 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 276 else 277 req.bmRequestType = UT_READ_VENDOR_DEVICE; 278 279 280 req.bRequest = breq; 281 USETW(req.wValue, val); 282 USETW(req.wIndex, 0); 283 USETW(req.wLength, len); 284 285 return (kue_do_request(sc, &req, data)); 286 } 287 288 static int 289 kue_load_fw(struct kue_softc *sc) 290 { 291 struct usb_device_descriptor *dd; 292 uint16_t hwrev; 293 usb_error_t err; 294 295 dd = usbd_get_device_descriptor(sc->sc_ue.ue_udev); 296 hwrev = UGETW(dd->bcdDevice); 297 298 /* 299 * First, check if we even need to load the firmware. 300 * If the device was still attached when the system was 301 * rebooted, it may already have firmware loaded in it. 302 * If this is the case, we don't need to do it again. 303 * And in fact, if we try to load it again, we'll hang, 304 * so we have to avoid this condition if we don't want 305 * to look stupid. 306 * 307 * We can test this quickly by checking the bcdRevision 308 * code. The NIC will return a different revision code if 309 * it's probed while the firmware is still loaded and 310 * running. 311 */ 312 if (hwrev == 0x0202) 313 return(0); 314 315 /* Load code segment */ 316 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 317 0, kue_code_seg, sizeof(kue_code_seg)); 318 if (err) { 319 device_printf(sc->sc_ue.ue_dev, "failed to load code segment: %s\n", 320 usbd_errstr(err)); 321 return(ENXIO); 322 } 323 324 /* Load fixup segment */ 325 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 326 0, kue_fix_seg, sizeof(kue_fix_seg)); 327 if (err) { 328 device_printf(sc->sc_ue.ue_dev, "failed to load fixup segment: %s\n", 329 usbd_errstr(err)); 330 return(ENXIO); 331 } 332 333 /* Send trigger command. */ 334 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 335 0, kue_trig_seg, sizeof(kue_trig_seg)); 336 if (err) { 337 device_printf(sc->sc_ue.ue_dev, "failed to load trigger segment: %s\n", 338 usbd_errstr(err)); 339 return(ENXIO); 340 } 341 342 return (0); 343 } 344 345 static void 346 kue_setpromisc(struct usb_ether *ue) 347 { 348 struct kue_softc *sc = uether_getsc(ue); 349 struct ifnet *ifp = uether_getifp(ue); 350 351 KUE_LOCK_ASSERT(sc, MA_OWNED); 352 353 if (ifp->if_flags & IFF_PROMISC) 354 sc->sc_rxfilt |= KUE_RXFILT_PROMISC; 355 else 356 sc->sc_rxfilt &= ~KUE_RXFILT_PROMISC; 357 358 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 359 } 360 361 static u_int 362 kue_copy_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt) 363 { 364 struct kue_softc *sc = arg; 365 366 if (cnt >= KUE_MCFILTCNT(sc)) 367 return (1); 368 369 memcpy(KUE_MCFILT(sc, cnt), LLADDR(sdl), ETHER_ADDR_LEN); 370 371 return (1); 372 } 373 374 static void 375 kue_setmulti(struct usb_ether *ue) 376 { 377 struct kue_softc *sc = uether_getsc(ue); 378 struct ifnet *ifp = uether_getifp(ue); 379 int i; 380 381 KUE_LOCK_ASSERT(sc, MA_OWNED); 382 383 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 384 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 385 sc->sc_rxfilt &= ~KUE_RXFILT_MULTICAST; 386 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 387 return; 388 } 389 390 sc->sc_rxfilt &= ~KUE_RXFILT_ALLMULTI; 391 392 i = if_foreach_llmaddr(ifp, kue_copy_maddr, sc); 393 394 if (i >= KUE_MCFILTCNT(sc)) 395 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 396 else { 397 sc->sc_rxfilt |= KUE_RXFILT_MULTICAST; 398 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS, 399 i, sc->sc_mcfilters, i * ETHER_ADDR_LEN); 400 } 401 402 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 403 } 404 405 /* 406 * Issue a SET_CONFIGURATION command to reset the MAC. This should be 407 * done after the firmware is loaded into the adapter in order to 408 * bring it into proper operation. 409 */ 410 static void 411 kue_reset(struct kue_softc *sc) 412 { 413 struct usb_config_descriptor *cd; 414 usb_error_t err; 415 416 cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev); 417 418 err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx, 419 cd->bConfigurationValue); 420 if (err) 421 DPRINTF("reset failed (ignored)\n"); 422 423 /* wait a little while for the chip to get its brains in order */ 424 uether_pause(&sc->sc_ue, hz / 100); 425 } 426 427 static void 428 kue_attach_post(struct usb_ether *ue) 429 { 430 struct kue_softc *sc = uether_getsc(ue); 431 int error; 432 433 /* load the firmware into the NIC */ 434 error = kue_load_fw(sc); 435 if (error) { 436 device_printf(sc->sc_ue.ue_dev, "could not load firmware\n"); 437 /* ignore the error */ 438 } 439 440 /* reset the adapter */ 441 kue_reset(sc); 442 443 /* read ethernet descriptor */ 444 kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR, 445 0, &sc->sc_desc, sizeof(sc->sc_desc)); 446 447 /* copy in ethernet address */ 448 memcpy(ue->ue_eaddr, sc->sc_desc.kue_macaddr, sizeof(ue->ue_eaddr)); 449 } 450 451 /* 452 * Probe for a KLSI chip. 453 */ 454 static int 455 kue_probe(device_t dev) 456 { 457 struct usb_attach_arg *uaa = device_get_ivars(dev); 458 459 if (uaa->usb_mode != USB_MODE_HOST) 460 return (ENXIO); 461 if (uaa->info.bConfigIndex != KUE_CONFIG_IDX) 462 return (ENXIO); 463 if (uaa->info.bIfaceIndex != KUE_IFACE_IDX) 464 return (ENXIO); 465 466 return (usbd_lookup_id_by_uaa(kue_devs, sizeof(kue_devs), uaa)); 467 } 468 469 /* 470 * Attach the interface. Allocate softc structures, do 471 * setup and ethernet/BPF attach. 472 */ 473 static int 474 kue_attach(device_t dev) 475 { 476 struct usb_attach_arg *uaa = device_get_ivars(dev); 477 struct kue_softc *sc = device_get_softc(dev); 478 struct usb_ether *ue = &sc->sc_ue; 479 uint8_t iface_index; 480 int error; 481 482 device_set_usb_desc(dev); 483 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 484 485 iface_index = KUE_IFACE_IDX; 486 error = usbd_transfer_setup(uaa->device, &iface_index, 487 sc->sc_xfer, kue_config, KUE_N_TRANSFER, sc, &sc->sc_mtx); 488 if (error) { 489 device_printf(dev, "allocating USB transfers failed\n"); 490 goto detach; 491 } 492 493 sc->sc_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN, 494 M_USBDEV, M_WAITOK); 495 if (sc->sc_mcfilters == NULL) { 496 device_printf(dev, "failed allocating USB memory\n"); 497 goto detach; 498 } 499 500 ue->ue_sc = sc; 501 ue->ue_dev = dev; 502 ue->ue_udev = uaa->device; 503 ue->ue_mtx = &sc->sc_mtx; 504 ue->ue_methods = &kue_ue_methods; 505 506 error = uether_ifattach(ue); 507 if (error) { 508 device_printf(dev, "could not attach interface\n"); 509 goto detach; 510 } 511 return (0); /* success */ 512 513 detach: 514 kue_detach(dev); 515 return (ENXIO); /* failure */ 516 } 517 518 static int 519 kue_detach(device_t dev) 520 { 521 struct kue_softc *sc = device_get_softc(dev); 522 struct usb_ether *ue = &sc->sc_ue; 523 524 usbd_transfer_unsetup(sc->sc_xfer, KUE_N_TRANSFER); 525 uether_ifdetach(ue); 526 mtx_destroy(&sc->sc_mtx); 527 free(sc->sc_mcfilters, M_USBDEV); 528 529 return (0); 530 } 531 532 /* 533 * A frame has been uploaded: pass the resulting mbuf chain up to 534 * the higher level protocols. 535 */ 536 static void 537 kue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 538 { 539 struct kue_softc *sc = usbd_xfer_softc(xfer); 540 struct usb_ether *ue = &sc->sc_ue; 541 struct ifnet *ifp = uether_getifp(ue); 542 struct usb_page_cache *pc; 543 uint8_t buf[2]; 544 int len; 545 int actlen; 546 547 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 548 549 switch (USB_GET_STATE(xfer)) { 550 case USB_ST_TRANSFERRED: 551 552 if (actlen <= (int)(2 + sizeof(struct ether_header))) { 553 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 554 goto tr_setup; 555 } 556 pc = usbd_xfer_get_frame(xfer, 0); 557 usbd_copy_out(pc, 0, buf, 2); 558 actlen -= 2; 559 len = buf[0] | (buf[1] << 8); 560 len = min(actlen, len); 561 562 uether_rxbuf(ue, pc, 2, len); 563 /* FALLTHROUGH */ 564 case USB_ST_SETUP: 565 tr_setup: 566 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 567 usbd_transfer_submit(xfer); 568 uether_rxflush(ue); 569 return; 570 571 default: /* Error */ 572 DPRINTF("bulk read error, %s\n", 573 usbd_errstr(error)); 574 575 if (error != USB_ERR_CANCELLED) { 576 /* try to clear stall first */ 577 usbd_xfer_set_stall(xfer); 578 goto tr_setup; 579 } 580 return; 581 582 } 583 } 584 585 static void 586 kue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 587 { 588 struct kue_softc *sc = usbd_xfer_softc(xfer); 589 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 590 struct usb_page_cache *pc; 591 struct mbuf *m; 592 int total_len; 593 int temp_len; 594 uint8_t buf[2]; 595 596 switch (USB_GET_STATE(xfer)) { 597 case USB_ST_TRANSFERRED: 598 DPRINTFN(11, "transfer complete\n"); 599 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 600 601 /* FALLTHROUGH */ 602 case USB_ST_SETUP: 603 tr_setup: 604 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 605 606 if (m == NULL) 607 return; 608 if (m->m_pkthdr.len > MCLBYTES) 609 m->m_pkthdr.len = MCLBYTES; 610 temp_len = (m->m_pkthdr.len + 2); 611 total_len = (temp_len + (64 - (temp_len % 64))); 612 613 /* the first two bytes are the frame length */ 614 615 buf[0] = (uint8_t)(m->m_pkthdr.len); 616 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8); 617 618 pc = usbd_xfer_get_frame(xfer, 0); 619 usbd_copy_in(pc, 0, buf, 2); 620 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); 621 622 usbd_frame_zero(pc, temp_len, total_len - temp_len); 623 usbd_xfer_set_frame_len(xfer, 0, total_len); 624 625 /* 626 * if there's a BPF listener, bounce a copy 627 * of this frame to him: 628 */ 629 BPF_MTAP(ifp, m); 630 631 m_freem(m); 632 633 usbd_transfer_submit(xfer); 634 635 return; 636 637 default: /* Error */ 638 DPRINTFN(11, "transfer error, %s\n", 639 usbd_errstr(error)); 640 641 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 642 643 if (error != USB_ERR_CANCELLED) { 644 /* try to clear stall first */ 645 usbd_xfer_set_stall(xfer); 646 goto tr_setup; 647 } 648 return; 649 650 } 651 } 652 653 static void 654 kue_start(struct usb_ether *ue) 655 { 656 struct kue_softc *sc = uether_getsc(ue); 657 658 /* 659 * start the USB transfers, if not already started: 660 */ 661 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_RD]); 662 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_WR]); 663 } 664 665 static void 666 kue_init(struct usb_ether *ue) 667 { 668 struct kue_softc *sc = uether_getsc(ue); 669 struct ifnet *ifp = uether_getifp(ue); 670 671 KUE_LOCK_ASSERT(sc, MA_OWNED); 672 673 /* set MAC address */ 674 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC, 675 0, IF_LLADDR(ifp), ETHER_ADDR_LEN); 676 677 /* I'm not sure how to tune these. */ 678 #if 0 679 /* 680 * Leave this one alone for now; setting it 681 * wrong causes lockups on some machines/controllers. 682 */ 683 kue_setword(sc, KUE_CMD_SET_SOFS, 1); 684 #endif 685 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64); 686 687 /* load the multicast filter */ 688 kue_setpromisc(ue); 689 690 usbd_xfer_set_stall(sc->sc_xfer[KUE_BULK_DT_WR]); 691 692 ifp->if_drv_flags |= IFF_DRV_RUNNING; 693 kue_start(ue); 694 } 695 696 static void 697 kue_stop(struct usb_ether *ue) 698 { 699 struct kue_softc *sc = uether_getsc(ue); 700 struct ifnet *ifp = uether_getifp(ue); 701 702 KUE_LOCK_ASSERT(sc, MA_OWNED); 703 704 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 705 706 /* 707 * stop all the transfers, if not already stopped: 708 */ 709 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_WR]); 710 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_RD]); 711 } 712