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