1 /*-
2 * Copyright (c) 1997, 1998, 1999, 2000
3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 *
32 * $FreeBSD: head/sys/dev/usb/net/if_kue.c 271832 2014-09-18 21:09:22Z glebius $
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/param.h>
69 #include <sys/queue.h>
70 #include <sys/types.h>
71 #include <sys/systm.h>
72 #include <sys/socket.h>
73 #include <sys/kernel.h>
74 #include <sys/bus.h>
75 #include <sys/module.h>
76 #include <sys/lock.h>
77 #include <sys/condvar.h>
78 #include <sys/sysctl.h>
79 #include <sys/unistd.h>
80 #include <sys/callout.h>
81 #include <sys/malloc.h>
82 #include <sys/caps.h>
83
84 #include <net/if.h>
85 #include <net/if_var.h>
86 #include <net/ifq_var.h>
87
88 #include <bus/u4b/usb.h>
89 #include <bus/u4b/usbdi.h>
90 #include <bus/u4b/usbdi_util.h>
91 #include "usbdevs.h"
92
93 #define USB_DEBUG_VAR kue_debug
94 #include <bus/u4b/usb_debug.h>
95 #include <bus/u4b/usb_process.h>
96
97 #include <bus/u4b/net/usb_ethernet.h>
98 #include <bus/u4b/net/if_kuereg.h>
99 #include <bus/u4b/net/if_kuefw.h>
100
101 /*
102 * Various supported device vendors/products.
103 */
104 static const STRUCT_USB_HOST_ID kue_devs[] = {
105 #define KUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
106 KUE_DEV(3COM, 3C19250),
107 KUE_DEV(3COM, 3C460),
108 KUE_DEV(ABOCOM, URE450),
109 KUE_DEV(ADS, UBS10BT),
110 KUE_DEV(ADS, UBS10BTX),
111 KUE_DEV(AOX, USB101),
112 KUE_DEV(ASANTE, EA),
113 KUE_DEV(ATEN, DSB650C),
114 KUE_DEV(ATEN, UC10T),
115 KUE_DEV(COREGA, ETHER_USB_T),
116 KUE_DEV(DLINK, DSB650C),
117 KUE_DEV(ENTREGA, E45),
118 KUE_DEV(ENTREGA, XX1),
119 KUE_DEV(ENTREGA, XX2),
120 KUE_DEV(IODATA, USBETT),
121 KUE_DEV(JATON, EDA),
122 KUE_DEV(KINGSTON, XX1),
123 KUE_DEV(KLSI, DUH3E10BT),
124 KUE_DEV(KLSI, DUH3E10BTN),
125 KUE_DEV(LINKSYS, USB10T),
126 KUE_DEV(MOBILITY, EA),
127 KUE_DEV(NETGEAR, EA101),
128 KUE_DEV(NETGEAR, EA101X),
129 KUE_DEV(PERACOM, ENET),
130 KUE_DEV(PERACOM, ENET2),
131 KUE_DEV(PERACOM, ENET3),
132 KUE_DEV(PORTGEAR, EA8),
133 KUE_DEV(PORTGEAR, EA9),
134 KUE_DEV(PORTSMITH, EEA),
135 KUE_DEV(SHARK, PA),
136 KUE_DEV(SILICOM, GPE),
137 KUE_DEV(SILICOM, U2E),
138 KUE_DEV(SMC, 2102USB),
139 #undef KUE_DEV
140 };
141
142 /* prototypes */
143
144 static device_probe_t kue_probe;
145 static device_attach_t kue_attach;
146 static device_detach_t kue_detach;
147
148 static usb_callback_t kue_bulk_read_callback;
149 static usb_callback_t kue_bulk_write_callback;
150
151 static uether_fn_t kue_attach_post;
152 static uether_fn_t kue_init;
153 static uether_fn_t kue_stop;
154 static uether_fn_t kue_start;
155 static uether_fn_t kue_setmulti;
156 static uether_fn_t kue_setpromisc;
157
158 static int kue_do_request(struct kue_softc *,
159 struct usb_device_request *, void *);
160 static int kue_setword(struct kue_softc *, uint8_t, uint16_t);
161 static int kue_ctl(struct kue_softc *, uint8_t, uint8_t, uint16_t,
162 void *, int);
163 static int kue_load_fw(struct kue_softc *);
164 static void kue_reset(struct kue_softc *);
165
166 #ifdef USB_DEBUG
167 static int kue_debug = 0;
168
169 static SYSCTL_NODE(_hw_usb, OID_AUTO, kue, CTLFLAG_RW, 0, "USB kue");
170 SYSCTL_INT(_hw_usb_kue, OID_AUTO, debug, CTLFLAG_RW, &kue_debug, 0,
171 "Debug level");
172 #endif
173
174 static const struct usb_config kue_config[KUE_N_TRANSFER] = {
175
176 [KUE_BULK_DT_WR] = {
177 .type = UE_BULK,
178 .endpoint = UE_ADDR_ANY,
179 .direction = UE_DIR_OUT,
180 .bufsize = (MCLBYTES + 2 + 64),
181 .flags = {.pipe_bof = 1,},
182 .callback = kue_bulk_write_callback,
183 .timeout = 10000, /* 10 seconds */
184 },
185
186 [KUE_BULK_DT_RD] = {
187 .type = UE_BULK,
188 .endpoint = UE_ADDR_ANY,
189 .direction = UE_DIR_IN,
190 .bufsize = (MCLBYTES + 2),
191 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
192 .callback = kue_bulk_read_callback,
193 .timeout = 0, /* no timeout */
194 },
195 };
196
197 static device_method_t kue_methods[] = {
198 /* Device interface */
199 DEVMETHOD(device_probe, kue_probe),
200 DEVMETHOD(device_attach, kue_attach),
201 DEVMETHOD(device_detach, kue_detach),
202
203 DEVMETHOD_END
204 };
205
206 static driver_t kue_driver = {
207 .name = "kue",
208 .methods = kue_methods,
209 .size = sizeof(struct kue_softc),
210 };
211
212 static devclass_t kue_devclass;
213
214 DRIVER_MODULE(kue, uhub, kue_driver, kue_devclass, 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
220 static const struct usb_ether_methods kue_ue_methods = {
221 .ue_attach_post = kue_attach_post,
222 .ue_start = kue_start,
223 .ue_init = kue_init,
224 .ue_stop = kue_stop,
225 .ue_setmulti = kue_setmulti,
226 .ue_setpromisc = kue_setpromisc,
227 };
228
229 /*
230 * We have a custom do_request function which is almost like the
231 * regular do_request function, except it has a much longer timeout.
232 * Why? Because we need to make requests over the control endpoint
233 * to download the firmware to the device, which can take longer
234 * than the default timeout.
235 */
236 static int
kue_do_request(struct kue_softc * sc,struct usb_device_request * req,void * data)237 kue_do_request(struct kue_softc *sc, struct usb_device_request *req,
238 void *data)
239 {
240 usb_error_t err;
241
242 err = uether_do_request(&sc->sc_ue, req, data, 60000);
243
244 return (err);
245 }
246
247 static int
kue_setword(struct kue_softc * sc,uint8_t breq,uint16_t word)248 kue_setword(struct kue_softc *sc, uint8_t breq, uint16_t word)
249 {
250 struct usb_device_request req;
251
252 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
253 req.bRequest = breq;
254 USETW(req.wValue, word);
255 USETW(req.wIndex, 0);
256 USETW(req.wLength, 0);
257
258 return (kue_do_request(sc, &req, NULL));
259 }
260
261 static int
kue_ctl(struct kue_softc * sc,uint8_t rw,uint8_t breq,uint16_t val,void * data,int len)262 kue_ctl(struct kue_softc *sc, uint8_t rw, uint8_t breq,
263 uint16_t val, void *data, int len)
264 {
265 struct usb_device_request req;
266
267 if (rw == KUE_CTL_WRITE)
268 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
269 else
270 req.bmRequestType = UT_READ_VENDOR_DEVICE;
271
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
kue_load_fw(struct kue_softc * sc)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
kue_setpromisc(struct usb_ether * ue)339 kue_setpromisc(struct usb_ether *ue)
340 {
341 struct kue_softc *sc = uether_getsc(ue);
342 struct ifnet *ifp = uether_getifp(ue);
343
344 KUE_LOCK_ASSERT(sc);
345
346 if (ifp->if_flags & 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 void
kue_setmulti(struct usb_ether * ue)355 kue_setmulti(struct usb_ether *ue)
356 {
357 struct kue_softc *sc = uether_getsc(ue);
358 struct ifnet *ifp = uether_getifp(ue);
359 struct ifmultiaddr *ifma;
360 int i = 0;
361
362 KUE_LOCK_ASSERT(sc);
363
364 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
365 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI;
366 sc->sc_rxfilt &= ~KUE_RXFILT_MULTICAST;
367 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt);
368 return;
369 }
370
371 sc->sc_rxfilt &= ~KUE_RXFILT_ALLMULTI;
372
373 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
374 {
375 if (ifma->ifma_addr->sa_family != AF_LINK)
376 continue;
377 /*
378 * If there are too many addresses for the
379 * internal filter, switch over to allmulti mode.
380 */
381 if (i == KUE_MCFILTCNT(sc))
382 break;
383 memcpy(KUE_MCFILT(sc, i),
384 LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
385 ETHER_ADDR_LEN);
386 i++;
387 }
388
389 if (i == KUE_MCFILTCNT(sc))
390 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI;
391 else {
392 sc->sc_rxfilt |= KUE_RXFILT_MULTICAST;
393 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS,
394 i, sc->sc_mcfilters, i * ETHER_ADDR_LEN);
395 }
396
397 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt);
398 }
399
400 /*
401 * Issue a SET_CONFIGURATION command to reset the MAC. This should be
402 * done after the firmware is loaded into the adapter in order to
403 * bring it into proper operation.
404 */
405 static void
kue_reset(struct kue_softc * sc)406 kue_reset(struct kue_softc *sc)
407 {
408 struct usb_config_descriptor *cd;
409 usb_error_t err;
410
411 cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev);
412
413 err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_lock,
414 cd->bConfigurationValue);
415 if (err)
416 DPRINTF("reset failed (ignored)\n");
417
418 /* wait a little while for the chip to get its brains in order */
419 uether_pause(&sc->sc_ue, hz / 100);
420 }
421
422 static void
kue_attach_post(struct usb_ether * ue)423 kue_attach_post(struct usb_ether *ue)
424 {
425 struct kue_softc *sc = uether_getsc(ue);
426 int error;
427
428 /* load the firmware into the NIC */
429 error = kue_load_fw(sc);
430 if (error) {
431 device_printf(sc->sc_ue.ue_dev, "could not load firmware\n");
432 /* ignore the error */
433 }
434
435 /* reset the adapter */
436 kue_reset(sc);
437
438 /* read ethernet descriptor */
439 kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR,
440 0, &sc->sc_desc, sizeof(sc->sc_desc));
441
442 /* copy in ethernet address */
443 memcpy(ue->ue_eaddr, sc->sc_desc.kue_macaddr, sizeof(ue->ue_eaddr));
444 }
445
446 /*
447 * Probe for a KLSI chip.
448 */
449 static int
kue_probe(device_t dev)450 kue_probe(device_t dev)
451 {
452 struct usb_attach_arg *uaa = device_get_ivars(dev);
453
454 if (uaa->usb_mode != USB_MODE_HOST)
455 return (ENXIO);
456 if (uaa->info.bConfigIndex != KUE_CONFIG_IDX)
457 return (ENXIO);
458 if (uaa->info.bIfaceIndex != KUE_IFACE_IDX)
459 return (ENXIO);
460
461 return (usbd_lookup_id_by_uaa(kue_devs, sizeof(kue_devs), uaa));
462 }
463
464 /*
465 * Attach the interface. Allocate softc structures, do
466 * setup and ethernet/BPF attach.
467 */
468 static int
kue_attach(device_t dev)469 kue_attach(device_t dev)
470 {
471 struct usb_attach_arg *uaa = device_get_ivars(dev);
472 struct kue_softc *sc = device_get_softc(dev);
473 struct usb_ether *ue = &sc->sc_ue;
474 uint8_t iface_index;
475 int error;
476
477 device_set_usb_desc(dev);
478 lockinit(&sc->sc_lock, device_get_nameunit(dev), 0, LK_CANRECURSE);
479
480 iface_index = KUE_IFACE_IDX;
481 error = usbd_transfer_setup(uaa->device, &iface_index,
482 sc->sc_xfer, kue_config, KUE_N_TRANSFER, sc, &sc->sc_lock);
483 if (error) {
484 device_printf(dev, "allocating USB transfers failed\n");
485 goto detach;
486 }
487
488 sc->sc_mcfilters = kmalloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN,
489 M_USBDEV, M_WAITOK);
490 if (sc->sc_mcfilters == NULL) {
491 device_printf(dev, "failed allocating USB memory\n");
492 goto detach;
493 }
494
495 ue->ue_sc = sc;
496 ue->ue_dev = dev;
497 ue->ue_udev = uaa->device;
498 ue->ue_lock = &sc->sc_lock;
499 ue->ue_methods = &kue_ue_methods;
500
501 error = uether_ifattach(ue);
502 if (error) {
503 device_printf(dev, "could not attach interface\n");
504 goto detach;
505 }
506 return (0); /* success */
507
508 detach:
509 kue_detach(dev);
510 return (ENXIO); /* failure */
511 }
512
513 static int
kue_detach(device_t dev)514 kue_detach(device_t dev)
515 {
516 struct kue_softc *sc = device_get_softc(dev);
517 struct usb_ether *ue = &sc->sc_ue;
518
519 usbd_transfer_unsetup(sc->sc_xfer, KUE_N_TRANSFER);
520 uether_ifdetach(ue);
521 lockuninit(&sc->sc_lock);
522 kfree(sc->sc_mcfilters, M_USBDEV);
523
524 return (0);
525 }
526
527 /*
528 * A frame has been uploaded: pass the resulting mbuf chain up to
529 * the higher level protocols.
530 */
531 static void
kue_bulk_read_callback(struct usb_xfer * xfer,usb_error_t error)532 kue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
533 {
534 struct kue_softc *sc = usbd_xfer_softc(xfer);
535 struct usb_ether *ue = &sc->sc_ue;
536 struct ifnet *ifp = uether_getifp(ue);
537 struct usb_page_cache *pc;
538 uint8_t buf[2];
539 int len;
540 int actlen;
541
542 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
543
544 switch (USB_GET_STATE(xfer)) {
545 case USB_ST_TRANSFERRED:
546
547 if (actlen <= (int)(2 + sizeof(struct ether_header))) {
548 IFNET_STAT_INC(ifp, ierrors, 1);
549 goto tr_setup;
550 }
551 pc = usbd_xfer_get_frame(xfer, 0);
552 usbd_copy_out(pc, 0, buf, 2);
553 actlen -= 2;
554 len = buf[0] | (buf[1] << 8);
555 len = min(actlen, len);
556
557 uether_rxbuf(ue, pc, 2, len);
558 /* FALLTHROUGH */
559 case USB_ST_SETUP:
560 tr_setup:
561 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
562 usbd_transfer_submit(xfer);
563 uether_rxflush(ue);
564 return;
565
566 default: /* Error */
567 DPRINTF("bulk read error, %s\n",
568 usbd_errstr(error));
569
570 if (error != USB_ERR_CANCELLED) {
571 /* try to clear stall first */
572 usbd_xfer_set_stall(xfer);
573 goto tr_setup;
574 }
575 return;
576
577 }
578 }
579
580 static void
kue_bulk_write_callback(struct usb_xfer * xfer,usb_error_t error)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 IFNET_STAT_INC(ifp, opackets, 1);
595
596 /* FALLTHROUGH */
597 case USB_ST_SETUP:
598 tr_setup:
599 m = ifq_dequeue(&ifp->if_snd);
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 IFNET_STAT_INC(ifp, 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
648 static void
kue_start(struct usb_ether * ue)649 kue_start(struct usb_ether *ue)
650 {
651 struct kue_softc *sc = uether_getsc(ue);
652
653 /*
654 * start the USB transfers, if not already started:
655 */
656 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_RD]);
657 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_WR]);
658 }
659
660 static void
kue_init(struct usb_ether * ue)661 kue_init(struct usb_ether *ue)
662 {
663 struct kue_softc *sc = uether_getsc(ue);
664 struct ifnet *ifp = uether_getifp(ue);
665
666 KUE_LOCK_ASSERT(sc);
667
668 /* set MAC address */
669 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC,
670 0, IF_LLADDR(ifp), ETHER_ADDR_LEN);
671
672 /* I'm not sure how to tune these. */
673 #if 0
674 /*
675 * Leave this one alone for now; setting it
676 * wrong causes lockups on some machines/controllers.
677 */
678 kue_setword(sc, KUE_CMD_SET_SOFS, 1);
679 #endif
680 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64);
681
682 /* load the multicast filter */
683 kue_setpromisc(ue);
684
685 usbd_xfer_set_stall(sc->sc_xfer[KUE_BULK_DT_WR]);
686
687 ifp->if_flags |= IFF_RUNNING;
688 kue_start(ue);
689 }
690
691 static void
kue_stop(struct usb_ether * ue)692 kue_stop(struct usb_ether *ue)
693 {
694 struct kue_softc *sc = uether_getsc(ue);
695 struct ifnet *ifp = uether_getifp(ue);
696
697 KUE_LOCK_ASSERT(sc);
698
699 ifp->if_flags &= ~IFF_RUNNING;
700
701 /*
702 * stop all the transfers, if not already stopped:
703 */
704 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_WR]);
705 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_RD]);
706 }
707