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 /* 37 * Kawasaki LSI KL5KUSB101B USB to ethernet adapter driver. 38 * 39 * Written by Bill Paul <wpaul@ee.columbia.edu> 40 * Electrical Engineering Department 41 * Columbia University, New York City 42 */ 43 44 /* 45 * The KLSI USB to ethernet adapter chip contains an USB serial interface, 46 * ethernet MAC and embedded microcontroller (called the QT Engine). 47 * The chip must have firmware loaded into it before it will operate. 48 * Packets are passed between the chip and host via bulk transfers. 49 * There is an interrupt endpoint mentioned in the software spec, however 50 * it's currently unused. This device is 10Mbps half-duplex only, hence 51 * there is no media selection logic. The MAC supports a 128 entry 52 * multicast filter, though the exact size of the filter can depend 53 * on the firmware. Curiously, while the software spec describes various 54 * ethernet statistics counters, my sample adapter and firmware combination 55 * claims not to support any statistics counters at all. 56 * 57 * Note that once we load the firmware in the device, we have to be 58 * careful not to load it again: if you restart your computer but 59 * leave the adapter attached to the USB controller, it may remain 60 * powered on and retain its firmware. In this case, we don't need 61 * to load the firmware a second time. 62 * 63 * Special thanks to Rob Furr for providing an ADS Technologies 64 * adapter for development and testing. No monkeys were harmed during 65 * the development of this driver. 66 */ 67 68 #include <sys/stdint.h> 69 #include <sys/stddef.h> 70 #include <sys/param.h> 71 #include <sys/queue.h> 72 #include <sys/types.h> 73 #include <sys/systm.h> 74 #include <sys/socket.h> 75 #include <sys/kernel.h> 76 #include <sys/bus.h> 77 #include <sys/module.h> 78 #include <sys/lock.h> 79 #include <sys/mutex.h> 80 #include <sys/condvar.h> 81 #include <sys/sysctl.h> 82 #include <sys/sx.h> 83 #include <sys/unistd.h> 84 #include <sys/callout.h> 85 #include <sys/malloc.h> 86 #include <sys/priv.h> 87 88 #include <net/if.h> 89 #include <net/if_var.h> 90 91 #include <dev/usb/usb.h> 92 #include <dev/usb/usbdi.h> 93 #include <dev/usb/usbdi_util.h> 94 #include "usbdevs.h" 95 96 #define USB_DEBUG_VAR kue_debug 97 #include <dev/usb/usb_debug.h> 98 #include <dev/usb/usb_process.h> 99 100 #include <dev/usb/net/usb_ethernet.h> 101 #include <dev/usb/net/if_kuereg.h> 102 #include <dev/usb/net/if_kuefw.h> 103 104 /* 105 * Various supported device vendors/products. 106 */ 107 static const STRUCT_USB_HOST_ID kue_devs[] = { 108 #define KUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } 109 KUE_DEV(3COM, 3C19250), 110 KUE_DEV(3COM, 3C460), 111 KUE_DEV(ABOCOM, URE450), 112 KUE_DEV(ADS, UBS10BT), 113 KUE_DEV(ADS, UBS10BTX), 114 KUE_DEV(AOX, USB101), 115 KUE_DEV(ASANTE, EA), 116 KUE_DEV(ATEN, DSB650C), 117 KUE_DEV(ATEN, UC10T), 118 KUE_DEV(COREGA, ETHER_USB_T), 119 KUE_DEV(DLINK, DSB650C), 120 KUE_DEV(ENTREGA, E45), 121 KUE_DEV(ENTREGA, XX1), 122 KUE_DEV(ENTREGA, XX2), 123 KUE_DEV(IODATA, USBETT), 124 KUE_DEV(JATON, EDA), 125 KUE_DEV(KINGSTON, XX1), 126 KUE_DEV(KLSI, DUH3E10BT), 127 KUE_DEV(KLSI, DUH3E10BTN), 128 KUE_DEV(LINKSYS, USB10T), 129 KUE_DEV(MOBILITY, EA), 130 KUE_DEV(NETGEAR, EA101), 131 KUE_DEV(NETGEAR, EA101X), 132 KUE_DEV(PERACOM, ENET), 133 KUE_DEV(PERACOM, ENET2), 134 KUE_DEV(PERACOM, ENET3), 135 KUE_DEV(PORTGEAR, EA8), 136 KUE_DEV(PORTGEAR, EA9), 137 KUE_DEV(PORTSMITH, EEA), 138 KUE_DEV(SHARK, PA), 139 KUE_DEV(SILICOM, GPE), 140 KUE_DEV(SILICOM, U2E), 141 KUE_DEV(SMC, 2102USB), 142 #undef KUE_DEV 143 }; 144 145 /* prototypes */ 146 147 static device_probe_t kue_probe; 148 static device_attach_t kue_attach; 149 static device_detach_t kue_detach; 150 151 static usb_callback_t kue_bulk_read_callback; 152 static usb_callback_t kue_bulk_write_callback; 153 154 static uether_fn_t kue_attach_post; 155 static uether_fn_t kue_init; 156 static uether_fn_t kue_stop; 157 static uether_fn_t kue_start; 158 static uether_fn_t kue_setmulti; 159 static uether_fn_t kue_setpromisc; 160 161 static int kue_do_request(struct kue_softc *, 162 struct usb_device_request *, void *); 163 static int kue_setword(struct kue_softc *, uint8_t, uint16_t); 164 static int kue_ctl(struct kue_softc *, uint8_t, uint8_t, uint16_t, 165 void *, int); 166 static int kue_load_fw(struct kue_softc *); 167 static void kue_reset(struct kue_softc *); 168 169 #ifdef USB_DEBUG 170 static int kue_debug = 0; 171 172 static SYSCTL_NODE(_hw_usb, OID_AUTO, kue, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 173 "USB kue"); 174 SYSCTL_INT(_hw_usb_kue, OID_AUTO, debug, CTLFLAG_RWTUN, &kue_debug, 0, 175 "Debug level"); 176 #endif 177 178 static const struct usb_config kue_config[KUE_N_TRANSFER] = { 179 [KUE_BULK_DT_WR] = { 180 .type = UE_BULK, 181 .endpoint = UE_ADDR_ANY, 182 .direction = UE_DIR_OUT, 183 .bufsize = (MCLBYTES + 2 + 64), 184 .flags = {.pipe_bof = 1,}, 185 .callback = kue_bulk_write_callback, 186 .timeout = 10000, /* 10 seconds */ 187 }, 188 189 [KUE_BULK_DT_RD] = { 190 .type = UE_BULK, 191 .endpoint = UE_ADDR_ANY, 192 .direction = UE_DIR_IN, 193 .bufsize = (MCLBYTES + 2), 194 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 195 .callback = kue_bulk_read_callback, 196 .timeout = 0, /* no timeout */ 197 }, 198 }; 199 200 static device_method_t kue_methods[] = { 201 /* Device interface */ 202 DEVMETHOD(device_probe, kue_probe), 203 DEVMETHOD(device_attach, kue_attach), 204 DEVMETHOD(device_detach, kue_detach), 205 206 DEVMETHOD_END 207 }; 208 209 static driver_t kue_driver = { 210 .name = "kue", 211 .methods = kue_methods, 212 .size = sizeof(struct kue_softc), 213 }; 214 215 DRIVER_MODULE(kue, uhub, kue_driver, NULL, NULL); 216 MODULE_DEPEND(kue, uether, 1, 1, 1); 217 MODULE_DEPEND(kue, usb, 1, 1, 1); 218 MODULE_DEPEND(kue, ether, 1, 1, 1); 219 MODULE_VERSION(kue, 1); 220 USB_PNP_HOST_INFO(kue_devs); 221 222 static const struct usb_ether_methods kue_ue_methods = { 223 .ue_attach_post = kue_attach_post, 224 .ue_start = kue_start, 225 .ue_init = kue_init, 226 .ue_stop = kue_stop, 227 .ue_setmulti = kue_setmulti, 228 .ue_setpromisc = kue_setpromisc, 229 }; 230 231 /* 232 * We have a custom do_request function which is almost like the 233 * regular do_request function, except it has a much longer timeout. 234 * Why? Because we need to make requests over the control endpoint 235 * to download the firmware to the device, which can take longer 236 * than the default timeout. 237 */ 238 static int 239 kue_do_request(struct kue_softc *sc, struct usb_device_request *req, 240 void *data) 241 { 242 usb_error_t err; 243 244 err = uether_do_request(&sc->sc_ue, req, data, 60000); 245 246 return (err); 247 } 248 249 static int 250 kue_setword(struct kue_softc *sc, uint8_t breq, uint16_t word) 251 { 252 struct usb_device_request req; 253 254 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 255 req.bRequest = breq; 256 USETW(req.wValue, word); 257 USETW(req.wIndex, 0); 258 USETW(req.wLength, 0); 259 260 return (kue_do_request(sc, &req, NULL)); 261 } 262 263 static int 264 kue_ctl(struct kue_softc *sc, uint8_t rw, uint8_t breq, 265 uint16_t val, void *data, int len) 266 { 267 struct usb_device_request req; 268 269 if (rw == KUE_CTL_WRITE) 270 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 271 else 272 req.bmRequestType = UT_READ_VENDOR_DEVICE; 273 274 req.bRequest = breq; 275 USETW(req.wValue, val); 276 USETW(req.wIndex, 0); 277 USETW(req.wLength, len); 278 279 return (kue_do_request(sc, &req, data)); 280 } 281 282 static int 283 kue_load_fw(struct kue_softc *sc) 284 { 285 struct usb_device_descriptor *dd; 286 uint16_t hwrev; 287 usb_error_t err; 288 289 dd = usbd_get_device_descriptor(sc->sc_ue.ue_udev); 290 hwrev = UGETW(dd->bcdDevice); 291 292 /* 293 * First, check if we even need to load the firmware. 294 * If the device was still attached when the system was 295 * rebooted, it may already have firmware loaded in it. 296 * If this is the case, we don't need to do it again. 297 * And in fact, if we try to load it again, we'll hang, 298 * so we have to avoid this condition if we don't want 299 * to look stupid. 300 * 301 * We can test this quickly by checking the bcdRevision 302 * code. The NIC will return a different revision code if 303 * it's probed while the firmware is still loaded and 304 * running. 305 */ 306 if (hwrev == 0x0202) 307 return(0); 308 309 /* Load code segment */ 310 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 311 0, kue_code_seg, sizeof(kue_code_seg)); 312 if (err) { 313 device_printf(sc->sc_ue.ue_dev, "failed to load code segment: %s\n", 314 usbd_errstr(err)); 315 return(ENXIO); 316 } 317 318 /* Load fixup segment */ 319 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 320 0, kue_fix_seg, sizeof(kue_fix_seg)); 321 if (err) { 322 device_printf(sc->sc_ue.ue_dev, "failed to load fixup segment: %s\n", 323 usbd_errstr(err)); 324 return(ENXIO); 325 } 326 327 /* Send trigger command. */ 328 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 329 0, kue_trig_seg, sizeof(kue_trig_seg)); 330 if (err) { 331 device_printf(sc->sc_ue.ue_dev, "failed to load trigger segment: %s\n", 332 usbd_errstr(err)); 333 return(ENXIO); 334 } 335 336 return (0); 337 } 338 339 static void 340 kue_setpromisc(struct usb_ether *ue) 341 { 342 struct kue_softc *sc = uether_getsc(ue); 343 if_t ifp = uether_getifp(ue); 344 345 KUE_LOCK_ASSERT(sc, MA_OWNED); 346 347 if (if_getflags(ifp) & IFF_PROMISC) 348 sc->sc_rxfilt |= KUE_RXFILT_PROMISC; 349 else 350 sc->sc_rxfilt &= ~KUE_RXFILT_PROMISC; 351 352 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 353 } 354 355 static u_int 356 kue_copy_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt) 357 { 358 struct kue_softc *sc = arg; 359 360 if (cnt >= KUE_MCFILTCNT(sc)) 361 return (1); 362 363 memcpy(KUE_MCFILT(sc, cnt), LLADDR(sdl), ETHER_ADDR_LEN); 364 365 return (1); 366 } 367 368 static void 369 kue_setmulti(struct usb_ether *ue) 370 { 371 struct kue_softc *sc = uether_getsc(ue); 372 if_t ifp = uether_getifp(ue); 373 int i; 374 375 KUE_LOCK_ASSERT(sc, MA_OWNED); 376 377 if (if_getflags(ifp) & IFF_ALLMULTI || if_getflags(ifp) & IFF_PROMISC) { 378 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 379 sc->sc_rxfilt &= ~KUE_RXFILT_MULTICAST; 380 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 381 return; 382 } 383 384 sc->sc_rxfilt &= ~KUE_RXFILT_ALLMULTI; 385 386 i = if_foreach_llmaddr(ifp, kue_copy_maddr, sc); 387 388 if (i >= KUE_MCFILTCNT(sc)) 389 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI; 390 else { 391 sc->sc_rxfilt |= KUE_RXFILT_MULTICAST; 392 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS, 393 i, sc->sc_mcfilters, i * ETHER_ADDR_LEN); 394 } 395 396 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt); 397 } 398 399 /* 400 * Issue a SET_CONFIGURATION command to reset the MAC. This should be 401 * done after the firmware is loaded into the adapter in order to 402 * bring it into proper operation. 403 */ 404 static void 405 kue_reset(struct kue_softc *sc) 406 { 407 struct usb_config_descriptor *cd; 408 usb_error_t err; 409 410 cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev); 411 412 err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx, 413 cd->bConfigurationValue); 414 if (err) 415 DPRINTF("reset failed (ignored)\n"); 416 417 /* wait a little while for the chip to get its brains in order */ 418 uether_pause(&sc->sc_ue, hz / 100); 419 } 420 421 static void 422 kue_attach_post(struct usb_ether *ue) 423 { 424 struct kue_softc *sc = uether_getsc(ue); 425 int error; 426 427 /* load the firmware into the NIC */ 428 error = kue_load_fw(sc); 429 if (error) { 430 device_printf(sc->sc_ue.ue_dev, "could not load firmware\n"); 431 /* ignore the error */ 432 } 433 434 /* reset the adapter */ 435 kue_reset(sc); 436 437 /* read ethernet descriptor */ 438 kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR, 439 0, &sc->sc_desc, sizeof(sc->sc_desc)); 440 441 /* copy in ethernet address */ 442 memcpy(ue->ue_eaddr, sc->sc_desc.kue_macaddr, sizeof(ue->ue_eaddr)); 443 } 444 445 /* 446 * Probe for a KLSI chip. 447 */ 448 static int 449 kue_probe(device_t dev) 450 { 451 struct usb_attach_arg *uaa = device_get_ivars(dev); 452 453 if (uaa->usb_mode != USB_MODE_HOST) 454 return (ENXIO); 455 if (uaa->info.bConfigIndex != KUE_CONFIG_IDX) 456 return (ENXIO); 457 if (uaa->info.bIfaceIndex != KUE_IFACE_IDX) 458 return (ENXIO); 459 460 return (usbd_lookup_id_by_uaa(kue_devs, sizeof(kue_devs), uaa)); 461 } 462 463 /* 464 * Attach the interface. Allocate softc structures, do 465 * setup and ethernet/BPF attach. 466 */ 467 static int 468 kue_attach(device_t dev) 469 { 470 struct usb_attach_arg *uaa = device_get_ivars(dev); 471 struct kue_softc *sc = device_get_softc(dev); 472 struct usb_ether *ue = &sc->sc_ue; 473 uint8_t iface_index; 474 int error; 475 476 device_set_usb_desc(dev); 477 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 478 479 iface_index = KUE_IFACE_IDX; 480 error = usbd_transfer_setup(uaa->device, &iface_index, 481 sc->sc_xfer, kue_config, KUE_N_TRANSFER, sc, &sc->sc_mtx); 482 if (error) { 483 device_printf(dev, "allocating USB transfers failed\n"); 484 goto detach; 485 } 486 487 sc->sc_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN, 488 M_USBDEV, M_WAITOK); 489 if (sc->sc_mcfilters == NULL) { 490 device_printf(dev, "failed allocating USB memory\n"); 491 goto detach; 492 } 493 494 ue->ue_sc = sc; 495 ue->ue_dev = dev; 496 ue->ue_udev = uaa->device; 497 ue->ue_mtx = &sc->sc_mtx; 498 ue->ue_methods = &kue_ue_methods; 499 500 error = uether_ifattach(ue); 501 if (error) { 502 device_printf(dev, "could not attach interface\n"); 503 goto detach; 504 } 505 return (0); /* success */ 506 507 detach: 508 kue_detach(dev); 509 return (ENXIO); /* failure */ 510 } 511 512 static int 513 kue_detach(device_t dev) 514 { 515 struct kue_softc *sc = device_get_softc(dev); 516 struct usb_ether *ue = &sc->sc_ue; 517 518 usbd_transfer_unsetup(sc->sc_xfer, KUE_N_TRANSFER); 519 uether_ifdetach(ue); 520 mtx_destroy(&sc->sc_mtx); 521 free(sc->sc_mcfilters, M_USBDEV); 522 523 return (0); 524 } 525 526 /* 527 * A frame has been uploaded: pass the resulting mbuf chain up to 528 * the higher level protocols. 529 */ 530 static void 531 kue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 532 { 533 struct kue_softc *sc = usbd_xfer_softc(xfer); 534 struct usb_ether *ue = &sc->sc_ue; 535 if_t ifp = uether_getifp(ue); 536 struct usb_page_cache *pc; 537 uint8_t buf[2]; 538 int len; 539 int actlen; 540 541 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 542 543 switch (USB_GET_STATE(xfer)) { 544 case USB_ST_TRANSFERRED: 545 546 if (actlen <= (int)(2 + sizeof(struct ether_header))) { 547 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 548 goto tr_setup; 549 } 550 pc = usbd_xfer_get_frame(xfer, 0); 551 usbd_copy_out(pc, 0, buf, 2); 552 actlen -= 2; 553 len = buf[0] | (buf[1] << 8); 554 len = min(actlen, len); 555 556 uether_rxbuf(ue, pc, 2, len); 557 /* FALLTHROUGH */ 558 case USB_ST_SETUP: 559 tr_setup: 560 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 561 usbd_transfer_submit(xfer); 562 uether_rxflush(ue); 563 return; 564 565 default: /* Error */ 566 DPRINTF("bulk read error, %s\n", 567 usbd_errstr(error)); 568 569 if (error != USB_ERR_CANCELLED) { 570 /* try to clear stall first */ 571 usbd_xfer_set_stall(xfer); 572 goto tr_setup; 573 } 574 return; 575 } 576 } 577 578 static void 579 kue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 580 { 581 struct kue_softc *sc = usbd_xfer_softc(xfer); 582 if_t ifp = uether_getifp(&sc->sc_ue); 583 struct usb_page_cache *pc; 584 struct mbuf *m; 585 int total_len; 586 int temp_len; 587 uint8_t buf[2]; 588 589 switch (USB_GET_STATE(xfer)) { 590 case USB_ST_TRANSFERRED: 591 DPRINTFN(11, "transfer complete\n"); 592 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 593 594 /* FALLTHROUGH */ 595 case USB_ST_SETUP: 596 tr_setup: 597 m = if_dequeue(ifp); 598 599 if (m == NULL) 600 return; 601 if (m->m_pkthdr.len > MCLBYTES) 602 m->m_pkthdr.len = MCLBYTES; 603 temp_len = (m->m_pkthdr.len + 2); 604 total_len = (temp_len + (64 - (temp_len % 64))); 605 606 /* the first two bytes are the frame length */ 607 608 buf[0] = (uint8_t)(m->m_pkthdr.len); 609 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8); 610 611 pc = usbd_xfer_get_frame(xfer, 0); 612 usbd_copy_in(pc, 0, buf, 2); 613 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); 614 615 usbd_frame_zero(pc, temp_len, total_len - temp_len); 616 usbd_xfer_set_frame_len(xfer, 0, total_len); 617 618 /* 619 * if there's a BPF listener, bounce a copy 620 * of this frame to him: 621 */ 622 BPF_MTAP(ifp, m); 623 624 m_freem(m); 625 626 usbd_transfer_submit(xfer); 627 628 return; 629 630 default: /* Error */ 631 DPRINTFN(11, "transfer error, %s\n", 632 usbd_errstr(error)); 633 634 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 635 636 if (error != USB_ERR_CANCELLED) { 637 /* try to clear stall first */ 638 usbd_xfer_set_stall(xfer); 639 goto tr_setup; 640 } 641 return; 642 } 643 } 644 645 static void 646 kue_start(struct usb_ether *ue) 647 { 648 struct kue_softc *sc = uether_getsc(ue); 649 650 /* 651 * start the USB transfers, if not already started: 652 */ 653 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_RD]); 654 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_WR]); 655 } 656 657 static void 658 kue_init(struct usb_ether *ue) 659 { 660 struct kue_softc *sc = uether_getsc(ue); 661 if_t ifp = uether_getifp(ue); 662 663 KUE_LOCK_ASSERT(sc, MA_OWNED); 664 665 /* set MAC address */ 666 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC, 667 0, if_getlladdr(ifp), ETHER_ADDR_LEN); 668 669 /* I'm not sure how to tune these. */ 670 #if 0 671 /* 672 * Leave this one alone for now; setting it 673 * wrong causes lockups on some machines/controllers. 674 */ 675 kue_setword(sc, KUE_CMD_SET_SOFS, 1); 676 #endif 677 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64); 678 679 /* load the multicast filter */ 680 kue_setpromisc(ue); 681 682 usbd_xfer_set_stall(sc->sc_xfer[KUE_BULK_DT_WR]); 683 684 if_setdrvflagbits(ifp, IFF_DRV_RUNNING, 0); 685 kue_start(ue); 686 } 687 688 static void 689 kue_stop(struct usb_ether *ue) 690 { 691 struct kue_softc *sc = uether_getsc(ue); 692 if_t ifp = uether_getifp(ue); 693 694 KUE_LOCK_ASSERT(sc, MA_OWNED); 695 696 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING); 697 698 /* 699 * stop all the transfers, if not already stopped: 700 */ 701 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_WR]); 702 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_RD]); 703 } 704