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 /*
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/stddef.h>
69 #include <sys/param.h>
70 #include <sys/queue.h>
71 #include <sys/types.h>
72 #include <sys/systm.h>
73 #include <sys/socket.h>
74 #include <sys/kernel.h>
75 #include <sys/bus.h>
76 #include <sys/module.h>
77 #include <sys/lock.h>
78 #include <sys/mutex.h>
79 #include <sys/condvar.h>
80 #include <sys/sysctl.h>
81 #include <sys/sx.h>
82 #include <sys/unistd.h>
83 #include <sys/callout.h>
84 #include <sys/malloc.h>
85 #include <sys/priv.h>
86
87 #include <net/if.h>
88 #include <net/if_var.h>
89
90 #include <dev/usb/usb.h>
91 #include <dev/usb/usbdi.h>
92 #include <dev/usb/usbdi_util.h>
93 #include "usbdevs.h"
94
95 #define USB_DEBUG_VAR kue_debug
96 #include <dev/usb/usb_debug.h>
97 #include <dev/usb/usb_process.h>
98
99 #include <dev/usb/net/usb_ethernet.h>
100 #include <dev/usb/net/if_kuereg.h>
101 #include <dev/usb/net/if_kuefw.h>
102
103 /*
104 * Various supported device vendors/products.
105 */
106 static const STRUCT_USB_HOST_ID kue_devs[] = {
107 #define KUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
108 KUE_DEV(3COM, 3C19250),
109 KUE_DEV(3COM, 3C460),
110 KUE_DEV(ABOCOM, URE450),
111 KUE_DEV(ADS, UBS10BT),
112 KUE_DEV(ADS, UBS10BTX),
113 KUE_DEV(AOX, USB101),
114 KUE_DEV(ASANTE, EA),
115 KUE_DEV(ATEN, DSB650C),
116 KUE_DEV(ATEN, UC10T),
117 KUE_DEV(COREGA, ETHER_USB_T),
118 KUE_DEV(DLINK, DSB650C),
119 KUE_DEV(ENTREGA, E45),
120 KUE_DEV(ENTREGA, XX1),
121 KUE_DEV(ENTREGA, XX2),
122 KUE_DEV(IODATA, USBETT),
123 KUE_DEV(JATON, EDA),
124 KUE_DEV(KINGSTON, XX1),
125 KUE_DEV(KLSI, DUH3E10BT),
126 KUE_DEV(KLSI, DUH3E10BTN),
127 KUE_DEV(LINKSYS, USB10T),
128 KUE_DEV(MOBILITY, EA),
129 KUE_DEV(NETGEAR, EA101),
130 KUE_DEV(NETGEAR, EA101X),
131 KUE_DEV(PERACOM, ENET),
132 KUE_DEV(PERACOM, ENET2),
133 KUE_DEV(PERACOM, ENET3),
134 KUE_DEV(PORTGEAR, EA8),
135 KUE_DEV(PORTGEAR, EA9),
136 KUE_DEV(PORTSMITH, EEA),
137 KUE_DEV(SHARK, PA),
138 KUE_DEV(SILICOM, GPE),
139 KUE_DEV(SILICOM, U2E),
140 KUE_DEV(SMC, 2102USB),
141 #undef KUE_DEV
142 };
143
144 /* prototypes */
145
146 static device_probe_t kue_probe;
147 static device_attach_t kue_attach;
148 static device_detach_t kue_detach;
149
150 static usb_callback_t kue_bulk_read_callback;
151 static usb_callback_t kue_bulk_write_callback;
152
153 static uether_fn_t kue_attach_post;
154 static uether_fn_t kue_init;
155 static uether_fn_t kue_stop;
156 static uether_fn_t kue_start;
157 static uether_fn_t kue_setmulti;
158 static uether_fn_t kue_setpromisc;
159
160 static int kue_do_request(struct kue_softc *,
161 struct usb_device_request *, void *);
162 static int kue_setword(struct kue_softc *, uint8_t, uint16_t);
163 static int kue_ctl(struct kue_softc *, uint8_t, uint8_t, uint16_t,
164 void *, int);
165 static int kue_load_fw(struct kue_softc *);
166 static void kue_reset(struct kue_softc *);
167
168 #ifdef USB_DEBUG
169 static int kue_debug = 0;
170
171 static SYSCTL_NODE(_hw_usb, OID_AUTO, kue, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
172 "USB kue");
173 SYSCTL_INT(_hw_usb_kue, OID_AUTO, debug, CTLFLAG_RWTUN, &kue_debug, 0,
174 "Debug level");
175 #endif
176
177 static const struct usb_config kue_config[KUE_N_TRANSFER] = {
178 [KUE_BULK_DT_WR] = {
179 .type = UE_BULK,
180 .endpoint = UE_ADDR_ANY,
181 .direction = UE_DIR_OUT,
182 .bufsize = (MCLBYTES + 2 + 64),
183 .flags = {.pipe_bof = 1,},
184 .callback = kue_bulk_write_callback,
185 .timeout = 10000, /* 10 seconds */
186 },
187
188 [KUE_BULK_DT_RD] = {
189 .type = UE_BULK,
190 .endpoint = UE_ADDR_ANY,
191 .direction = UE_DIR_IN,
192 .bufsize = (MCLBYTES + 2),
193 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
194 .callback = kue_bulk_read_callback,
195 .timeout = 0, /* no timeout */
196 },
197 };
198
199 static device_method_t kue_methods[] = {
200 /* Device interface */
201 DEVMETHOD(device_probe, kue_probe),
202 DEVMETHOD(device_attach, kue_attach),
203 DEVMETHOD(device_detach, kue_detach),
204
205 DEVMETHOD_END
206 };
207
208 static driver_t kue_driver = {
209 .name = "kue",
210 .methods = kue_methods,
211 .size = sizeof(struct kue_softc),
212 };
213
214 DRIVER_MODULE(kue, uhub, kue_driver, 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 USB_PNP_HOST_INFO(kue_devs);
220
221 static const struct usb_ether_methods kue_ue_methods = {
222 .ue_attach_post = kue_attach_post,
223 .ue_start = kue_start,
224 .ue_init = kue_init,
225 .ue_stop = kue_stop,
226 .ue_setmulti = kue_setmulti,
227 .ue_setpromisc = kue_setpromisc,
228 };
229
230 /*
231 * We have a custom do_request function which is almost like the
232 * regular do_request function, except it has a much longer timeout.
233 * Why? Because we need to make requests over the control endpoint
234 * to download the firmware to the device, which can take longer
235 * than the default timeout.
236 */
237 static int
kue_do_request(struct kue_softc * sc,struct usb_device_request * req,void * data)238 kue_do_request(struct kue_softc *sc, struct usb_device_request *req,
239 void *data)
240 {
241 usb_error_t err;
242
243 err = uether_do_request(&sc->sc_ue, req, data, 60000);
244
245 return (err);
246 }
247
248 static int
kue_setword(struct kue_softc * sc,uint8_t breq,uint16_t word)249 kue_setword(struct kue_softc *sc, uint8_t breq, uint16_t word)
250 {
251 struct usb_device_request req;
252
253 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
254 req.bRequest = breq;
255 USETW(req.wValue, word);
256 USETW(req.wIndex, 0);
257 USETW(req.wLength, 0);
258
259 return (kue_do_request(sc, &req, NULL));
260 }
261
262 static int
kue_ctl(struct kue_softc * sc,uint8_t rw,uint8_t breq,uint16_t val,void * data,int len)263 kue_ctl(struct kue_softc *sc, uint8_t rw, uint8_t breq,
264 uint16_t val, void *data, int len)
265 {
266 struct usb_device_request req;
267
268 if (rw == KUE_CTL_WRITE)
269 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
270 else
271 req.bmRequestType = UT_READ_VENDOR_DEVICE;
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 if_t ifp = uether_getifp(ue);
343
344 KUE_LOCK_ASSERT(sc, MA_OWNED);
345
346 if (if_getflags(ifp) & 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 u_int
kue_copy_maddr(void * arg,struct sockaddr_dl * sdl,u_int cnt)355 kue_copy_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt)
356 {
357 struct kue_softc *sc = arg;
358
359 if (cnt >= KUE_MCFILTCNT(sc))
360 return (1);
361
362 memcpy(KUE_MCFILT(sc, cnt), LLADDR(sdl), ETHER_ADDR_LEN);
363
364 return (1);
365 }
366
367 static void
kue_setmulti(struct usb_ether * ue)368 kue_setmulti(struct usb_ether *ue)
369 {
370 struct kue_softc *sc = uether_getsc(ue);
371 if_t ifp = uether_getifp(ue);
372 int i;
373
374 KUE_LOCK_ASSERT(sc, MA_OWNED);
375
376 if (if_getflags(ifp) & IFF_ALLMULTI || if_getflags(ifp) & IFF_PROMISC) {
377 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI;
378 sc->sc_rxfilt &= ~KUE_RXFILT_MULTICAST;
379 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt);
380 return;
381 }
382
383 sc->sc_rxfilt &= ~KUE_RXFILT_ALLMULTI;
384
385 i = if_foreach_llmaddr(ifp, kue_copy_maddr, sc);
386
387 if (i >= KUE_MCFILTCNT(sc))
388 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI;
389 else {
390 sc->sc_rxfilt |= KUE_RXFILT_MULTICAST;
391 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS,
392 i, sc->sc_mcfilters, i * ETHER_ADDR_LEN);
393 }
394
395 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt);
396 }
397
398 /*
399 * Issue a SET_CONFIGURATION command to reset the MAC. This should be
400 * done after the firmware is loaded into the adapter in order to
401 * bring it into proper operation.
402 */
403 static void
kue_reset(struct kue_softc * sc)404 kue_reset(struct kue_softc *sc)
405 {
406 struct usb_config_descriptor *cd;
407 usb_error_t err;
408
409 cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev);
410
411 err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx,
412 cd->bConfigurationValue);
413 if (err)
414 DPRINTF("reset failed (ignored)\n");
415
416 /* wait a little while for the chip to get its brains in order */
417 uether_pause(&sc->sc_ue, hz / 100);
418 }
419
420 static void
kue_attach_post(struct usb_ether * ue)421 kue_attach_post(struct usb_ether *ue)
422 {
423 struct kue_softc *sc = uether_getsc(ue);
424 int error;
425
426 /* load the firmware into the NIC */
427 error = kue_load_fw(sc);
428 if (error) {
429 device_printf(sc->sc_ue.ue_dev, "could not load firmware\n");
430 /* ignore the error */
431 }
432
433 /* reset the adapter */
434 kue_reset(sc);
435
436 /* read ethernet descriptor */
437 kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR,
438 0, &sc->sc_desc, sizeof(sc->sc_desc));
439
440 /* copy in ethernet address */
441 memcpy(ue->ue_eaddr, sc->sc_desc.kue_macaddr, sizeof(ue->ue_eaddr));
442 }
443
444 /*
445 * Probe for a KLSI chip.
446 */
447 static int
kue_probe(device_t dev)448 kue_probe(device_t dev)
449 {
450 struct usb_attach_arg *uaa = device_get_ivars(dev);
451
452 if (uaa->usb_mode != USB_MODE_HOST)
453 return (ENXIO);
454 if (uaa->info.bConfigIndex != KUE_CONFIG_IDX)
455 return (ENXIO);
456 if (uaa->info.bIfaceIndex != KUE_IFACE_IDX)
457 return (ENXIO);
458
459 return (usbd_lookup_id_by_uaa(kue_devs, sizeof(kue_devs), uaa));
460 }
461
462 /*
463 * Attach the interface. Allocate softc structures, do
464 * setup and ethernet/BPF attach.
465 */
466 static int
kue_attach(device_t dev)467 kue_attach(device_t dev)
468 {
469 struct usb_attach_arg *uaa = device_get_ivars(dev);
470 struct kue_softc *sc = device_get_softc(dev);
471 struct usb_ether *ue = &sc->sc_ue;
472 uint8_t iface_index;
473 int error;
474
475 device_set_usb_desc(dev);
476 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
477
478 iface_index = KUE_IFACE_IDX;
479 error = usbd_transfer_setup(uaa->device, &iface_index,
480 sc->sc_xfer, kue_config, KUE_N_TRANSFER, sc, &sc->sc_mtx);
481 if (error) {
482 device_printf(dev, "allocating USB transfers failed\n");
483 goto detach;
484 }
485
486 sc->sc_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN,
487 M_USBDEV, M_WAITOK);
488 if (sc->sc_mcfilters == NULL) {
489 device_printf(dev, "failed allocating USB memory\n");
490 goto detach;
491 }
492
493 ue->ue_sc = sc;
494 ue->ue_dev = dev;
495 ue->ue_udev = uaa->device;
496 ue->ue_mtx = &sc->sc_mtx;
497 ue->ue_methods = &kue_ue_methods;
498
499 error = uether_ifattach(ue);
500 if (error) {
501 device_printf(dev, "could not attach interface\n");
502 goto detach;
503 }
504 return (0); /* success */
505
506 detach:
507 kue_detach(dev);
508 return (ENXIO); /* failure */
509 }
510
511 static int
kue_detach(device_t dev)512 kue_detach(device_t dev)
513 {
514 struct kue_softc *sc = device_get_softc(dev);
515 struct usb_ether *ue = &sc->sc_ue;
516
517 usbd_transfer_unsetup(sc->sc_xfer, KUE_N_TRANSFER);
518 uether_ifdetach(ue);
519 mtx_destroy(&sc->sc_mtx);
520 free(sc->sc_mcfilters, M_USBDEV);
521
522 return (0);
523 }
524
525 /*
526 * A frame has been uploaded: pass the resulting mbuf chain up to
527 * the higher level protocols.
528 */
529 static void
kue_bulk_read_callback(struct usb_xfer * xfer,usb_error_t error)530 kue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
531 {
532 struct kue_softc *sc = usbd_xfer_softc(xfer);
533 struct usb_ether *ue = &sc->sc_ue;
534 if_t ifp = uether_getifp(ue);
535 struct usb_page_cache *pc;
536 uint8_t buf[2];
537 int len;
538 int actlen;
539
540 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
541
542 switch (USB_GET_STATE(xfer)) {
543 case USB_ST_TRANSFERRED:
544
545 if (actlen <= (int)(2 + sizeof(struct ether_header))) {
546 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
547 goto tr_setup;
548 }
549 pc = usbd_xfer_get_frame(xfer, 0);
550 usbd_copy_out(pc, 0, buf, 2);
551 actlen -= 2;
552 len = buf[0] | (buf[1] << 8);
553 len = min(actlen, len);
554
555 uether_rxbuf(ue, pc, 2, len);
556 /* FALLTHROUGH */
557 case USB_ST_SETUP:
558 tr_setup:
559 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
560 usbd_transfer_submit(xfer);
561 uether_rxflush(ue);
562 return;
563
564 default: /* Error */
565 DPRINTF("bulk read error, %s\n",
566 usbd_errstr(error));
567
568 if (error != USB_ERR_CANCELLED) {
569 /* try to clear stall first */
570 usbd_xfer_set_stall(xfer);
571 goto tr_setup;
572 }
573 return;
574 }
575 }
576
577 static void
kue_bulk_write_callback(struct usb_xfer * xfer,usb_error_t error)578 kue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
579 {
580 struct kue_softc *sc = usbd_xfer_softc(xfer);
581 if_t ifp = uether_getifp(&sc->sc_ue);
582 struct usb_page_cache *pc;
583 struct mbuf *m;
584 int total_len;
585 int temp_len;
586 uint8_t buf[2];
587
588 switch (USB_GET_STATE(xfer)) {
589 case USB_ST_TRANSFERRED:
590 DPRINTFN(11, "transfer complete\n");
591 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
592
593 /* FALLTHROUGH */
594 case USB_ST_SETUP:
595 tr_setup:
596 m = if_dequeue(ifp);
597
598 if (m == NULL)
599 return;
600 if (m->m_pkthdr.len > MCLBYTES)
601 m->m_pkthdr.len = MCLBYTES;
602 temp_len = (m->m_pkthdr.len + 2);
603 total_len = (temp_len + (64 - (temp_len % 64)));
604
605 /* the first two bytes are the frame length */
606
607 buf[0] = (uint8_t)(m->m_pkthdr.len);
608 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8);
609
610 pc = usbd_xfer_get_frame(xfer, 0);
611 usbd_copy_in(pc, 0, buf, 2);
612 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len);
613
614 usbd_frame_zero(pc, temp_len, total_len - temp_len);
615 usbd_xfer_set_frame_len(xfer, 0, total_len);
616
617 /*
618 * if there's a BPF listener, bounce a copy
619 * of this frame to him:
620 */
621 BPF_MTAP(ifp, m);
622
623 m_freem(m);
624
625 usbd_transfer_submit(xfer);
626
627 return;
628
629 default: /* Error */
630 DPRINTFN(11, "transfer error, %s\n",
631 usbd_errstr(error));
632
633 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
634
635 if (error != USB_ERR_CANCELLED) {
636 /* try to clear stall first */
637 usbd_xfer_set_stall(xfer);
638 goto tr_setup;
639 }
640 return;
641 }
642 }
643
644 static void
kue_start(struct usb_ether * ue)645 kue_start(struct usb_ether *ue)
646 {
647 struct kue_softc *sc = uether_getsc(ue);
648
649 /*
650 * start the USB transfers, if not already started:
651 */
652 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_RD]);
653 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_WR]);
654 }
655
656 static void
kue_init(struct usb_ether * ue)657 kue_init(struct usb_ether *ue)
658 {
659 struct kue_softc *sc = uether_getsc(ue);
660 if_t ifp = uether_getifp(ue);
661
662 KUE_LOCK_ASSERT(sc, MA_OWNED);
663
664 /* set MAC address */
665 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC,
666 0, if_getlladdr(ifp), ETHER_ADDR_LEN);
667
668 /* I'm not sure how to tune these. */
669 #if 0
670 /*
671 * Leave this one alone for now; setting it
672 * wrong causes lockups on some machines/controllers.
673 */
674 kue_setword(sc, KUE_CMD_SET_SOFS, 1);
675 #endif
676 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64);
677
678 /* load the multicast filter */
679 kue_setpromisc(ue);
680
681 usbd_xfer_set_stall(sc->sc_xfer[KUE_BULK_DT_WR]);
682
683 if_setdrvflagbits(ifp, IFF_DRV_RUNNING, 0);
684 kue_start(ue);
685 }
686
687 static void
kue_stop(struct usb_ether * ue)688 kue_stop(struct usb_ether *ue)
689 {
690 struct kue_softc *sc = uether_getsc(ue);
691 if_t ifp = uether_getifp(ue);
692
693 KUE_LOCK_ASSERT(sc, MA_OWNED);
694
695 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING);
696
697 /*
698 * stop all the transfers, if not already stopped:
699 */
700 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_WR]);
701 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_RD]);
702 }
703