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, 0, "USB kue"); 175 SYSCTL_INT(_hw_usb_kue, OID_AUTO, debug, CTLFLAG_RWTUN, &kue_debug, 0, 176 "Debug level"); 177 #endif 178 179 static 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 }; 201 202 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; 277 278 279 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 } 286 287 static int 288 kue_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 } 343 344 static void 345 kue_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 } 359 360 static u_int 361 kue_copy_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt) 362 { 363 struct kue_softc *sc = arg; 364 365 if (cnt >= KUE_MCFILTCNT(sc)) 366 return (1); 367 368 memcpy(KUE_MCFILT(sc, cnt), LLADDR(sdl), ETHER_ADDR_LEN); 369 370 return (1); 371 } 372 373 static void 374 kue_setmulti(struct usb_ether *ue) 375 { 376 struct kue_softc *sc = uether_getsc(ue); 377 struct ifnet *ifp = uether_getifp(ue); 378 int i; 379 380 KUE_LOCK_ASSERT(sc, MA_OWNED); 381 382 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 383 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 384 sc->sc_rxfilt &= ~KUE_RXFILT_MULTICAST; 385 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 386 return; 387 } 388 389 sc->sc_rxfilt &= ~KUE_RXFILT_ALLMULTI; 390 391 i = if_foreach_llmaddr(ifp, kue_copy_maddr, sc); 392 393 if (i >= KUE_MCFILTCNT(sc)) 394 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 395 else { 396 sc->sc_rxfilt |= KUE_RXFILT_MULTICAST; 397 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS, 398 i, sc->sc_mcfilters, i * ETHER_ADDR_LEN); 399 } 400 401 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 402 } 403 404 /* 405 * Issue a SET_CONFIGURATION command to reset the MAC. This should be 406 * done after the firmware is loaded into the adapter in order to 407 * bring it into proper operation. 408 */ 409 static void 410 kue_reset(struct kue_softc *sc) 411 { 412 struct usb_config_descriptor *cd; 413 usb_error_t err; 414 415 cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev); 416 417 err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx, 418 cd->bConfigurationValue); 419 if (err) 420 DPRINTF("reset failed (ignored)\n"); 421 422 /* wait a little while for the chip to get its brains in order */ 423 uether_pause(&sc->sc_ue, hz / 100); 424 } 425 426 static void 427 kue_attach_post(struct usb_ether *ue) 428 { 429 struct kue_softc *sc = uether_getsc(ue); 430 int error; 431 432 /* load the firmware into the NIC */ 433 error = kue_load_fw(sc); 434 if (error) { 435 device_printf(sc->sc_ue.ue_dev, "could not load firmware\n"); 436 /* ignore the error */ 437 } 438 439 /* reset the adapter */ 440 kue_reset(sc); 441 442 /* read ethernet descriptor */ 443 kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR, 444 0, &sc->sc_desc, sizeof(sc->sc_desc)); 445 446 /* copy in ethernet address */ 447 memcpy(ue->ue_eaddr, sc->sc_desc.kue_macaddr, sizeof(ue->ue_eaddr)); 448 } 449 450 /* 451 * Probe for a KLSI chip. 452 */ 453 static int 454 kue_probe(device_t dev) 455 { 456 struct usb_attach_arg *uaa = device_get_ivars(dev); 457 458 if (uaa->usb_mode != USB_MODE_HOST) 459 return (ENXIO); 460 if (uaa->info.bConfigIndex != KUE_CONFIG_IDX) 461 return (ENXIO); 462 if (uaa->info.bIfaceIndex != KUE_IFACE_IDX) 463 return (ENXIO); 464 465 return (usbd_lookup_id_by_uaa(kue_devs, sizeof(kue_devs), uaa)); 466 } 467 468 /* 469 * Attach the interface. Allocate softc structures, do 470 * setup and ethernet/BPF attach. 471 */ 472 static int 473 kue_attach(device_t dev) 474 { 475 struct usb_attach_arg *uaa = device_get_ivars(dev); 476 struct kue_softc *sc = device_get_softc(dev); 477 struct usb_ether *ue = &sc->sc_ue; 478 uint8_t iface_index; 479 int error; 480 481 device_set_usb_desc(dev); 482 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 483 484 iface_index = KUE_IFACE_IDX; 485 error = usbd_transfer_setup(uaa->device, &iface_index, 486 sc->sc_xfer, kue_config, KUE_N_TRANSFER, sc, &sc->sc_mtx); 487 if (error) { 488 device_printf(dev, "allocating USB transfers failed\n"); 489 goto detach; 490 } 491 492 sc->sc_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN, 493 M_USBDEV, M_WAITOK); 494 if (sc->sc_mcfilters == NULL) { 495 device_printf(dev, "failed allocating USB memory\n"); 496 goto detach; 497 } 498 499 ue->ue_sc = sc; 500 ue->ue_dev = dev; 501 ue->ue_udev = uaa->device; 502 ue->ue_mtx = &sc->sc_mtx; 503 ue->ue_methods = &kue_ue_methods; 504 505 error = uether_ifattach(ue); 506 if (error) { 507 device_printf(dev, "could not attach interface\n"); 508 goto detach; 509 } 510 return (0); /* success */ 511 512 detach: 513 kue_detach(dev); 514 return (ENXIO); /* failure */ 515 } 516 517 static int 518 kue_detach(device_t dev) 519 { 520 struct kue_softc *sc = device_get_softc(dev); 521 struct usb_ether *ue = &sc->sc_ue; 522 523 usbd_transfer_unsetup(sc->sc_xfer, KUE_N_TRANSFER); 524 uether_ifdetach(ue); 525 mtx_destroy(&sc->sc_mtx); 526 free(sc->sc_mcfilters, M_USBDEV); 527 528 return (0); 529 } 530 531 /* 532 * A frame has been uploaded: pass the resulting mbuf chain up to 533 * the higher level protocols. 534 */ 535 static void 536 kue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 537 { 538 struct kue_softc *sc = usbd_xfer_softc(xfer); 539 struct usb_ether *ue = &sc->sc_ue; 540 struct ifnet *ifp = uether_getifp(ue); 541 struct usb_page_cache *pc; 542 uint8_t buf[2]; 543 int len; 544 int actlen; 545 546 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 547 548 switch (USB_GET_STATE(xfer)) { 549 case USB_ST_TRANSFERRED: 550 551 if (actlen <= (int)(2 + sizeof(struct ether_header))) { 552 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 553 goto tr_setup; 554 } 555 pc = usbd_xfer_get_frame(xfer, 0); 556 usbd_copy_out(pc, 0, buf, 2); 557 actlen -= 2; 558 len = buf[0] | (buf[1] << 8); 559 len = min(actlen, len); 560 561 uether_rxbuf(ue, pc, 2, len); 562 /* FALLTHROUGH */ 563 case USB_ST_SETUP: 564 tr_setup: 565 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 566 usbd_transfer_submit(xfer); 567 uether_rxflush(ue); 568 return; 569 570 default: /* Error */ 571 DPRINTF("bulk read error, %s\n", 572 usbd_errstr(error)); 573 574 if (error != USB_ERR_CANCELLED) { 575 /* try to clear stall first */ 576 usbd_xfer_set_stall(xfer); 577 goto tr_setup; 578 } 579 return; 580 581 } 582 } 583 584 static void 585 kue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 586 { 587 struct kue_softc *sc = usbd_xfer_softc(xfer); 588 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 589 struct usb_page_cache *pc; 590 struct mbuf *m; 591 int total_len; 592 int temp_len; 593 uint8_t buf[2]; 594 595 switch (USB_GET_STATE(xfer)) { 596 case USB_ST_TRANSFERRED: 597 DPRINTFN(11, "transfer complete\n"); 598 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 599 600 /* FALLTHROUGH */ 601 case USB_ST_SETUP: 602 tr_setup: 603 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 604 605 if (m == NULL) 606 return; 607 if (m->m_pkthdr.len > MCLBYTES) 608 m->m_pkthdr.len = MCLBYTES; 609 temp_len = (m->m_pkthdr.len + 2); 610 total_len = (temp_len + (64 - (temp_len % 64))); 611 612 /* the first two bytes are the frame length */ 613 614 buf[0] = (uint8_t)(m->m_pkthdr.len); 615 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8); 616 617 pc = usbd_xfer_get_frame(xfer, 0); 618 usbd_copy_in(pc, 0, buf, 2); 619 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); 620 621 usbd_frame_zero(pc, temp_len, total_len - temp_len); 622 usbd_xfer_set_frame_len(xfer, 0, total_len); 623 624 /* 625 * if there's a BPF listener, bounce a copy 626 * of this frame to him: 627 */ 628 BPF_MTAP(ifp, m); 629 630 m_freem(m); 631 632 usbd_transfer_submit(xfer); 633 634 return; 635 636 default: /* Error */ 637 DPRINTFN(11, "transfer error, %s\n", 638 usbd_errstr(error)); 639 640 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 641 642 if (error != USB_ERR_CANCELLED) { 643 /* try to clear stall first */ 644 usbd_xfer_set_stall(xfer); 645 goto tr_setup; 646 } 647 return; 648 649 } 650 } 651 652 static void 653 kue_start(struct usb_ether *ue) 654 { 655 struct kue_softc *sc = uether_getsc(ue); 656 657 /* 658 * start the USB transfers, if not already started: 659 */ 660 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_RD]); 661 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_WR]); 662 } 663 664 static void 665 kue_init(struct usb_ether *ue) 666 { 667 struct kue_softc *sc = uether_getsc(ue); 668 struct ifnet *ifp = uether_getifp(ue); 669 670 KUE_LOCK_ASSERT(sc, MA_OWNED); 671 672 /* set MAC address */ 673 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC, 674 0, IF_LLADDR(ifp), ETHER_ADDR_LEN); 675 676 /* I'm not sure how to tune these. */ 677 #if 0 678 /* 679 * Leave this one alone for now; setting it 680 * wrong causes lockups on some machines/controllers. 681 */ 682 kue_setword(sc, KUE_CMD_SET_SOFS, 1); 683 #endif 684 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64); 685 686 /* load the multicast filter */ 687 kue_setpromisc(ue); 688 689 usbd_xfer_set_stall(sc->sc_xfer[KUE_BULK_DT_WR]); 690 691 ifp->if_drv_flags |= IFF_DRV_RUNNING; 692 kue_start(ue); 693 } 694 695 static void 696 kue_stop(struct usb_ether *ue) 697 { 698 struct kue_softc *sc = uether_getsc(ue); 699 struct ifnet *ifp = uether_getifp(ue); 700 701 KUE_LOCK_ASSERT(sc, MA_OWNED); 702 703 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 704 705 /* 706 * stop all the transfers, if not already stopped: 707 */ 708 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_WR]); 709 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_RD]); 710 } 711