FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/if_rue.c
1 /*-
2 * Copyright (c) 2001-2003, Shunsuke Akiyama <akiyama@FreeBSD.org>.
3 * Copyright (c) 1997, 1998, 1999, 2000 Bill Paul <wpaul@ee.columbia.edu>.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27 /*-
28 * Copyright (c) 1997, 1998, 1999, 2000
29 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
30 *
31 * Redistribution and use in source and binary forms, with or without
32 * modification, are permitted provided that the following conditions
33 * are met:
34 * 1. Redistributions of source code must retain the above copyright
35 * notice, this list of conditions and the following disclaimer.
36 * 2. Redistributions in binary form must reproduce the above copyright
37 * notice, this list of conditions and the following disclaimer in the
38 * documentation and/or other materials provided with the distribution.
39 * 3. All advertising materials mentioning features or use of this software
40 * must display the following acknowledgement:
41 * This product includes software developed by Bill Paul.
42 * 4. Neither the name of the author nor the names of any co-contributors
43 * may be used to endorse or promote products derived from this software
44 * without specific prior written permission.
45 *
46 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
50 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
51 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
52 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
53 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
54 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
55 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
56 * THE POSSIBILITY OF SUCH DAMAGE.
57 */
58
59 #include <sys/cdefs.h>
60 __FBSDID("$FreeBSD: src/sys/dev/usb/if_rue.c,v 1.40 2007/07/09 16:58:07 imp Exp $");
61
62 /*
63 * RealTek RTL8150 USB to fast ethernet controller driver.
64 * Datasheet is available from
65 * ftp://ftp.realtek.com.tw/lancard/data_sheet/8150/.
66 */
67
68 #include <sys/param.h>
69 #include <sys/systm.h>
70 #include <sys/sockio.h>
71 #include <sys/mbuf.h>
72 #include <sys/malloc.h>
73 #include <sys/kernel.h>
74 #include <sys/module.h>
75 #include <sys/socket.h>
76 #include <sys/sysctl.h>
77
78 #include <net/if.h>
79 #include <net/if_arp.h>
80 #include <net/ethernet.h>
81 #include <net/if_dl.h>
82 #include <net/if_media.h>
83 #include <net/if_types.h>
84
85 #include <net/bpf.h>
86
87 #include <sys/bus.h>
88 #include <machine/bus.h>
89
90 #include <dev/usb/usb.h>
91 #include <dev/usb/usbdi.h>
92 #include <dev/usb/usbdi_util.h>
93 #include <dev/usb/usbdivar.h>
94 #include "usbdevs.h"
95 #include <dev/usb/usb_ethersubr.h>
96
97 #include <dev/mii/mii.h>
98 #include <dev/mii/miivar.h>
99
100 #include <dev/usb/if_ruereg.h>
101
102 /* "device miibus" required. See GENERIC if you get errors here. */
103 #include "miibus_if.h"
104
105 #ifdef USB_DEBUG
106 static int ruedebug = 0;
107 SYSCTL_NODE(_hw_usb, OID_AUTO, rue, CTLFLAG_RW, 0, "USB rue");
108 SYSCTL_INT(_hw_usb_rue, OID_AUTO, debug, CTLFLAG_RW,
109 &ruedebug, 0, "rue debug level");
110
111 #define DPRINTFN(n, x) do { \
112 if (ruedebug > (n)) \
113 printf x; \
114 } while (0);
115 #else
116 #define DPRINTFN(n, x)
117 #endif
118 #define DPRINTF(x) DPRINTFN(0, x)
119
120 /*
121 * Various supported device vendors/products.
122 */
123
124 static struct rue_type rue_devs[] = {
125 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_LUAKTX },
126 { USB_VENDOR_REALTEK, USB_PRODUCT_REALTEK_USBKR100 },
127 { 0, 0 }
128 };
129
130 static device_probe_t rue_match;
131 static device_attach_t rue_attach;
132 static device_detach_t rue_detach;
133 static device_shutdown_t rue_shutdown;
134 static miibus_readreg_t rue_miibus_readreg;
135 static miibus_writereg_t rue_miibus_writereg;
136 static miibus_statchg_t rue_miibus_statchg;
137
138 static int rue_encap(struct rue_softc *, struct mbuf *, int);
139 #ifdef RUE_INTR_PIPE
140 static void rue_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
141 #endif
142 static void rue_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
143 static void rue_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
144 static void rue_tick(void *);
145 static void rue_tick_task(void *);
146 static void rue_rxstart(struct ifnet *);
147 static void rue_start(struct ifnet *);
148 static int rue_ioctl(struct ifnet *, u_long, caddr_t);
149 static void rue_init(void *);
150 static void rue_stop(struct rue_softc *);
151 static void rue_watchdog(struct ifnet *);
152 static int rue_ifmedia_upd(struct ifnet *);
153 static void rue_ifmedia_sts(struct ifnet *, struct ifmediareq *);
154
155 static void rue_setmulti(struct rue_softc *);
156 static void rue_reset(struct rue_softc *);
157
158 static int rue_read_mem(struct rue_softc *, u_int16_t, void *, u_int16_t);
159 static int rue_write_mem(struct rue_softc *, u_int16_t, void *, u_int16_t);
160 static int rue_csr_read_1(struct rue_softc *, int);
161 static int rue_csr_write_1(struct rue_softc *, int, u_int8_t);
162 static int rue_csr_read_2(struct rue_softc *, int);
163 static int rue_csr_write_2(struct rue_softc *, int, u_int16_t);
164 static int rue_csr_write_4(struct rue_softc *, int, u_int32_t);
165
166 static device_method_t rue_methods[] = {
167 /* Device interface */
168 DEVMETHOD(device_probe, rue_match),
169 DEVMETHOD(device_attach, rue_attach),
170 DEVMETHOD(device_detach, rue_detach),
171 DEVMETHOD(device_shutdown, rue_shutdown),
172
173 /* Bus interface */
174 DEVMETHOD(bus_print_child, bus_generic_print_child),
175 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
176
177 /* MII interface */
178 DEVMETHOD(miibus_readreg, rue_miibus_readreg),
179 DEVMETHOD(miibus_writereg, rue_miibus_writereg),
180 DEVMETHOD(miibus_statchg, rue_miibus_statchg),
181
182 { 0, 0 }
183 };
184
185 static driver_t rue_driver = {
186 "rue",
187 rue_methods,
188 sizeof(struct rue_softc)
189 };
190
191 static devclass_t rue_devclass;
192
193 DRIVER_MODULE(rue, uhub, rue_driver, rue_devclass, usbd_driver_load, 0);
194 DRIVER_MODULE(miibus, rue, miibus_driver, miibus_devclass, 0, 0);
195 MODULE_DEPEND(rue, usb, 1, 1, 1);
196 MODULE_DEPEND(rue, ether, 1, 1, 1);
197 MODULE_DEPEND(rue, miibus, 1, 1, 1);
198
199 #define RUE_SETBIT(sc, reg, x) \
200 rue_csr_write_1(sc, reg, rue_csr_read_1(sc, reg) | (x))
201
202 #define RUE_CLRBIT(sc, reg, x) \
203 rue_csr_write_1(sc, reg, rue_csr_read_1(sc, reg) & ~(x))
204
205 #define RUE_SETBIT_2(sc, reg, x) \
206 rue_csr_write_2(sc, reg, rue_csr_read_2(sc, reg) | (x))
207
208 #define RUE_CLRBIT_2(sc, reg, x) \
209 rue_csr_write_2(sc, reg, rue_csr_read_2(sc, reg) & ~(x))
210
211 static int
212 rue_read_mem(struct rue_softc *sc, u_int16_t addr, void *buf, u_int16_t len)
213 {
214 usb_device_request_t req;
215 usbd_status err;
216
217 if (sc->rue_dying)
218 return (0);
219
220 RUE_LOCK(sc);
221
222 req.bmRequestType = UT_READ_VENDOR_DEVICE;
223 req.bRequest = UR_SET_ADDRESS;
224 USETW(req.wValue, addr);
225 USETW(req.wIndex, 0);
226 USETW(req.wLength, len);
227
228 err = usbd_do_request(sc->rue_udev, &req, buf);
229
230 RUE_UNLOCK(sc);
231
232 if (err) {
233 device_printf(sc->rue_dev, "control pipe read failed: %s\n",
234 usbd_errstr(err));
235 return (-1);
236 }
237
238 return (0);
239 }
240
241 static int
242 rue_write_mem(struct rue_softc *sc, u_int16_t addr, void *buf, u_int16_t len)
243 {
244 usb_device_request_t req;
245 usbd_status err;
246
247 if (sc->rue_dying)
248 return (0);
249
250 RUE_LOCK(sc);
251
252 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
253 req.bRequest = UR_SET_ADDRESS;
254 USETW(req.wValue, addr);
255 USETW(req.wIndex, 0);
256 USETW(req.wLength, len);
257
258 err = usbd_do_request(sc->rue_udev, &req, buf);
259
260 RUE_UNLOCK(sc);
261
262 if (err) {
263 device_printf(sc->rue_dev, "control pipe write failed: %s\n",
264 usbd_errstr(err));
265 return (-1);
266 }
267
268 return (0);
269 }
270
271 static int
272 rue_csr_read_1(struct rue_softc *sc, int reg)
273 {
274 int err;
275 u_int8_t val = 0;
276
277 err = rue_read_mem(sc, reg, &val, 1);
278
279 if (err)
280 return (0);
281
282 return (val);
283 }
284
285 static int
286 rue_csr_read_2(struct rue_softc *sc, int reg)
287 {
288 int err;
289 u_int16_t val = 0;
290 uWord w;
291
292 USETW(w, val);
293 err = rue_read_mem(sc, reg, &w, 2);
294 val = UGETW(w);
295
296 if (err)
297 return (0);
298
299 return (val);
300 }
301
302 static int
303 rue_csr_write_1(struct rue_softc *sc, int reg, u_int8_t val)
304 {
305 int err;
306
307 err = rue_write_mem(sc, reg, &val, 1);
308
309 if (err)
310 return (-1);
311
312 return (0);
313 }
314
315 static int
316 rue_csr_write_2(struct rue_softc *sc, int reg, u_int16_t val)
317 {
318 int err;
319 uWord w;
320
321 USETW(w, val);
322 err = rue_write_mem(sc, reg, &w, 2);
323
324 if (err)
325 return (-1);
326
327 return (0);
328 }
329
330 static int
331 rue_csr_write_4(struct rue_softc *sc, int reg, u_int32_t val)
332 {
333 int err;
334 uDWord dw;
335
336 USETDW(dw, val);
337 err = rue_write_mem(sc, reg, &dw, 4);
338
339 if (err)
340 return (-1);
341
342 return (0);
343 }
344
345 static int
346 rue_miibus_readreg(device_t dev, int phy, int reg)
347 {
348 struct rue_softc *sc = device_get_softc(dev);
349 int rval;
350 int ruereg;
351
352 if (phy != 0) /* RTL8150 supports PHY == 0, only */
353 return (0);
354
355 switch (reg) {
356 case MII_BMCR:
357 ruereg = RUE_BMCR;
358 break;
359 case MII_BMSR:
360 ruereg = RUE_BMSR;
361 break;
362 case MII_ANAR:
363 ruereg = RUE_ANAR;
364 break;
365 case MII_ANER:
366 ruereg = RUE_AER;
367 break;
368 case MII_ANLPAR:
369 ruereg = RUE_ANLP;
370 break;
371 case MII_PHYIDR1:
372 case MII_PHYIDR2:
373 return (0);
374 break;
375 default:
376 if (RUE_REG_MIN <= reg && reg <= RUE_REG_MAX) {
377 rval = rue_csr_read_1(sc, reg);
378 return (rval);
379 }
380 device_printf(sc->rue_dev, "bad phy register\n");
381 return (0);
382 }
383
384 rval = rue_csr_read_2(sc, ruereg);
385
386 return (rval);
387 }
388
389 static int
390 rue_miibus_writereg(device_t dev, int phy, int reg, int data)
391 {
392 struct rue_softc *sc = device_get_softc(dev);
393 int ruereg;
394
395 if (phy != 0) /* RTL8150 supports PHY == 0, only */
396 return (0);
397
398 switch (reg) {
399 case MII_BMCR:
400 ruereg = RUE_BMCR;
401 break;
402 case MII_BMSR:
403 ruereg = RUE_BMSR;
404 break;
405 case MII_ANAR:
406 ruereg = RUE_ANAR;
407 break;
408 case MII_ANER:
409 ruereg = RUE_AER;
410 break;
411 case MII_ANLPAR:
412 ruereg = RUE_ANLP;
413 break;
414 case MII_PHYIDR1:
415 case MII_PHYIDR2:
416 return (0);
417 break;
418 default:
419 if (RUE_REG_MIN <= reg && reg <= RUE_REG_MAX) {
420 rue_csr_write_1(sc, reg, data);
421 return (0);
422 }
423 device_printf(sc->rue_dev, "bad phy register\n");
424 return (0);
425 }
426 rue_csr_write_2(sc, ruereg, data);
427
428 return (0);
429 }
430
431 static void
432 rue_miibus_statchg(device_t dev)
433 {
434 /*
435 * When the code below is enabled the card starts doing weird
436 * things after link going from UP to DOWN and back UP.
437 *
438 * Looks like some of register writes below messes up PHY
439 * interface.
440 *
441 * No visible regressions were found after commenting this code
442 * out, so that disable it for good.
443 */
444 #if 0
445 struct rue_softc *sc = device_get_softc(dev);
446 struct mii_data *mii = GET_MII(sc);
447 int bmcr;
448
449 RUE_CLRBIT(sc, RUE_CR, (RUE_CR_RE | RUE_CR_TE));
450
451 bmcr = rue_csr_read_2(sc, RUE_BMCR);
452
453 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX)
454 bmcr |= RUE_BMCR_SPD_SET;
455 else
456 bmcr &= ~RUE_BMCR_SPD_SET;
457
458 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX)
459 bmcr |= RUE_BMCR_DUPLEX;
460 else
461 bmcr &= ~RUE_BMCR_DUPLEX;
462
463 rue_csr_write_2(sc, RUE_BMCR, bmcr);
464
465 RUE_SETBIT(sc, RUE_CR, (RUE_CR_RE | RUE_CR_TE));
466 #endif
467 }
468
469 /*
470 * Program the 64-bit multicast hash filter.
471 */
472
473 static void
474 rue_setmulti(struct rue_softc *sc)
475 {
476 struct ifnet *ifp;
477 int h = 0;
478 u_int32_t hashes[2] = { 0, 0 };
479 struct ifmultiaddr *ifma;
480 u_int32_t rxcfg;
481 int mcnt = 0;
482
483 ifp = sc->rue_ifp;
484
485 rxcfg = rue_csr_read_2(sc, RUE_RCR);
486
487 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
488 rxcfg |= (RUE_RCR_AAM | RUE_RCR_AAP);
489 rxcfg &= ~RUE_RCR_AM;
490 rue_csr_write_2(sc, RUE_RCR, rxcfg);
491 rue_csr_write_4(sc, RUE_MAR0, 0xFFFFFFFF);
492 rue_csr_write_4(sc, RUE_MAR4, 0xFFFFFFFF);
493 return;
494 }
495
496 /* first, zot all the existing hash bits */
497 rue_csr_write_4(sc, RUE_MAR0, 0);
498 rue_csr_write_4(sc, RUE_MAR4, 0);
499
500 /* now program new ones */
501 IF_ADDR_LOCK(ifp);
502 TAILQ_FOREACH (ifma, &ifp->if_multiaddrs, ifma_link)
503 {
504 if (ifma->ifma_addr->sa_family != AF_LINK)
505 continue;
506 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
507 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
508 if (h < 32)
509 hashes[0] |= (1 << h);
510 else
511 hashes[1] |= (1 << (h - 32));
512 mcnt++;
513 }
514 IF_ADDR_UNLOCK(ifp);
515
516 if (mcnt)
517 rxcfg |= RUE_RCR_AM;
518 else
519 rxcfg &= ~RUE_RCR_AM;
520
521 rxcfg &= ~(RUE_RCR_AAM | RUE_RCR_AAP);
522
523 rue_csr_write_2(sc, RUE_RCR, rxcfg);
524 rue_csr_write_4(sc, RUE_MAR0, hashes[0]);
525 rue_csr_write_4(sc, RUE_MAR4, hashes[1]);
526 }
527
528 static void
529 rue_reset(struct rue_softc *sc)
530 {
531 int i;
532
533 rue_csr_write_1(sc, RUE_CR, RUE_CR_SOFT_RST);
534
535 for (i = 0; i < RUE_TIMEOUT; i++) {
536 DELAY(500);
537 if (!(rue_csr_read_1(sc, RUE_CR) & RUE_CR_SOFT_RST))
538 break;
539 }
540 if (i == RUE_TIMEOUT)
541 device_printf(sc->rue_dev, "reset never completed!\n");
542
543 DELAY(10000);
544 }
545
546 /*
547 * Probe for a RTL8150 chip.
548 */
549
550 static int
551 rue_match(device_t self)
552 {
553 struct usb_attach_arg *uaa = device_get_ivars(self);
554 struct rue_type *t;
555
556 if (uaa->iface == NULL)
557 return (UMATCH_NONE);
558
559 t = rue_devs;
560 while (t->rue_vid) {
561 if (uaa->vendor == t->rue_vid &&
562 uaa->product == t->rue_did) {
563 return (UMATCH_VENDOR_PRODUCT);
564 }
565 t++;
566 }
567
568 return (UMATCH_NONE);
569 }
570
571 /*
572 * Attach the interface. Allocate softc structures, do ifmedia
573 * setup and ethernet/BPF attach.
574 */
575
576 static int
577 rue_attach(device_t self)
578 {
579 struct rue_softc *sc = device_get_softc(self);
580 struct usb_attach_arg *uaa = device_get_ivars(self);
581 u_char eaddr[ETHER_ADDR_LEN];
582 struct ifnet *ifp;
583 usbd_interface_handle iface;
584 usbd_status err;
585 usb_interface_descriptor_t *id;
586 usb_endpoint_descriptor_t *ed;
587 int i;
588 struct rue_type *t;
589
590 sc->rue_dev = self;
591 sc->rue_udev = uaa->device;
592
593 if (usbd_set_config_no(sc->rue_udev, RUE_CONFIG_NO, 0)) {
594 device_printf(sc->rue_dev, "getting interface handle failed\n");
595 goto error;
596 }
597
598 usb_init_task(&sc->rue_tick_task, rue_tick_task, sc);
599
600 err = usbd_device2interface_handle(uaa->device, RUE_IFACE_IDX, &iface);
601 if (err) {
602 device_printf(sc->rue_dev, "getting interface handle failed\n");
603 goto error;
604 }
605
606 sc->rue_iface = iface;
607
608 t = rue_devs;
609 while (t->rue_vid) {
610 if (uaa->vendor == t->rue_vid &&
611 uaa->product == t->rue_did) {
612 sc->rue_info = t;
613 break;
614 }
615 t++;
616 }
617
618 id = usbd_get_interface_descriptor(sc->rue_iface);
619
620 /* Find endpoints */
621 for (i = 0; i < id->bNumEndpoints; i++) {
622 ed = usbd_interface2endpoint_descriptor(iface, i);
623 if (ed == NULL) {
624 device_printf(sc->rue_dev, "couldn't get ep %d\n", i);
625 goto error;
626 }
627 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
628 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
629 sc->rue_ed[RUE_ENDPT_RX] = ed->bEndpointAddress;
630 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
631 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
632 sc->rue_ed[RUE_ENDPT_TX] = ed->bEndpointAddress;
633 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
634 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
635 sc->rue_ed[RUE_ENDPT_INTR] = ed->bEndpointAddress;
636 }
637 }
638
639 mtx_init(&sc->rue_mtx, device_get_nameunit(self), MTX_NETWORK_LOCK,
640 MTX_DEF | MTX_RECURSE);
641 RUE_LOCK(sc);
642
643 /* Reset the adapter */
644 rue_reset(sc);
645
646 /* Get station address from the EEPROM */
647 err = rue_read_mem(sc, RUE_EEPROM_IDR0,
648 (caddr_t)&eaddr, ETHER_ADDR_LEN);
649 if (err) {
650 device_printf(sc->rue_dev, "couldn't get station address\n");
651 goto error1;
652 }
653
654 ifp = sc->rue_ifp = if_alloc(IFT_ETHER);
655 if (ifp == NULL) {
656 device_printf(sc->rue_dev, "can not if_alloc()\n");
657 goto error1;
658 }
659 ifp->if_softc = sc;
660 if_initname(ifp, "rue", device_get_unit(sc->rue_dev));
661 ifp->if_mtu = ETHERMTU;
662 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST |
663 IFF_NEEDSGIANT;
664 ifp->if_ioctl = rue_ioctl;
665 ifp->if_start = rue_start;
666 ifp->if_watchdog = rue_watchdog;
667 ifp->if_init = rue_init;
668 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
669
670 /* MII setup */
671 if (mii_phy_probe(self, &sc->rue_miibus,
672 rue_ifmedia_upd, rue_ifmedia_sts)) {
673 device_printf(sc->rue_dev, "MII without any PHY!\n");
674 goto error2;
675 }
676
677 sc->rue_qdat.ifp = ifp;
678 sc->rue_qdat.if_rxstart = rue_rxstart;
679
680 /* Call MI attach routine */
681 ether_ifattach(ifp, eaddr);
682 callout_handle_init(&sc->rue_stat_ch);
683 usb_register_netisr();
684 sc->rue_dying = 0;
685
686 RUE_UNLOCK(sc);
687 return 0;
688
689 error2:
690 if_free(ifp);
691 error1:
692 RUE_UNLOCK(sc);
693 mtx_destroy(&sc->rue_mtx);
694 error:
695 return ENXIO;
696 }
697
698 static int
699 rue_detach(device_t dev)
700 {
701 struct rue_softc *sc;
702 struct ifnet *ifp;
703
704 sc = device_get_softc(dev);
705 RUE_LOCK(sc);
706 ifp = sc->rue_ifp;
707
708 sc->rue_dying = 1;
709 untimeout(rue_tick, sc, sc->rue_stat_ch);
710 usb_rem_task(sc->rue_udev, &sc->rue_tick_task);
711 ether_ifdetach(ifp);
712 if_free(ifp);
713
714 if (sc->rue_ep[RUE_ENDPT_TX] != NULL)
715 usbd_abort_pipe(sc->rue_ep[RUE_ENDPT_TX]);
716 if (sc->rue_ep[RUE_ENDPT_RX] != NULL)
717 usbd_abort_pipe(sc->rue_ep[RUE_ENDPT_RX]);
718 #ifdef RUE_INTR_PIPE
719 if (sc->rue_ep[RUE_ENDPT_INTR] != NULL)
720 usbd_abort_pipe(sc->rue_ep[RUE_ENDPT_INTR]);
721 #endif
722
723 RUE_UNLOCK(sc);
724 mtx_destroy(&sc->rue_mtx);
725
726 return (0);
727 }
728
729 #ifdef RUE_INTR_PIPE
730 static void
731 rue_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
732 {
733 struct rue_softc *sc = priv;
734 struct ifnet *ifp;
735 struct rue_intrpkt *p;
736
737 RUE_LOCK(sc);
738 ifp = sc->rue_ifp;
739
740 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
741 RUE_UNLOCK(sc);
742 return;
743 }
744
745 if (status != USBD_NORMAL_COMPLETION) {
746 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
747 RUE_UNLOCK(sc);
748 return;
749 }
750 device_printf(sc->rue_dev, "usb error on intr: %s\n",
751 usbd_errstr(status));
752 if (status == USBD_STALLED)
753 usbd_clear_endpoint_stall(sc->rue_ep[RUE_ENDPT_INTR]);
754 RUE_UNLOCK(sc);
755 return;
756 }
757
758 usbd_get_xfer_status(xfer, NULL, (void **)&p, NULL, NULL);
759
760 ifp->if_ierrors += p->rue_rxlost_cnt;
761 ifp->if_ierrors += p->rue_crcerr_cnt;
762 ifp->if_collisions += p->rue_col_cnt;
763
764 RUE_UNLOCK(sc);
765 }
766 #endif
767
768 static void
769 rue_rxstart(struct ifnet *ifp)
770 {
771 struct rue_softc *sc;
772 struct ue_chain *c;
773
774 sc = ifp->if_softc;
775 RUE_LOCK(sc);
776 c = &sc->rue_cdata.ue_rx_chain[sc->rue_cdata.ue_rx_prod];
777
778 c->ue_mbuf = usb_ether_newbuf();
779 if (c->ue_mbuf == NULL) {
780 printf("%s: no memory for rx list "
781 "-- packet dropped!\n", device_get_nameunit(sc->rue_dev));
782 ifp->if_ierrors++;
783 RUE_UNLOCK(sc);
784 return;
785 }
786
787 /* Setup new transfer. */
788 usbd_setup_xfer(c->ue_xfer, sc->rue_ep[RUE_ENDPT_RX],
789 c, mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK,
790 USBD_NO_TIMEOUT, rue_rxeof);
791 usbd_transfer(c->ue_xfer);
792
793 RUE_UNLOCK(sc);
794 }
795
796 /*
797 * A frame has been uploaded: pass the resulting mbuf chain up to
798 * the higher level protocols.
799 */
800
801 static void
802 rue_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
803 {
804 struct ue_chain *c = priv;
805 struct rue_softc *sc = c->ue_sc;
806 struct mbuf *m;
807 struct ifnet *ifp;
808 int total_len = 0;
809 struct rue_rxpkt r;
810
811 if (sc->rue_dying)
812 return;
813 RUE_LOCK(sc);
814 ifp = sc->rue_ifp;
815
816 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
817 RUE_UNLOCK(sc);
818 return;
819 }
820
821 if (status != USBD_NORMAL_COMPLETION) {
822 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
823 RUE_UNLOCK(sc);
824 return;
825 }
826 if (usbd_ratecheck(&sc->rue_rx_notice))
827 device_printf(sc->rue_dev, "usb error on rx: %s\n",
828 usbd_errstr(status));
829 if (status == USBD_STALLED)
830 usbd_clear_endpoint_stall(sc->rue_ep[RUE_ENDPT_RX]);
831 goto done;
832 }
833
834 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
835
836 if (total_len <= ETHER_CRC_LEN) {
837 ifp->if_ierrors++;
838 goto done;
839 }
840
841 m = c->ue_mbuf;
842 bcopy(mtod(m, char *) + total_len - 4, (char *)&r, sizeof (r));
843
844 /* Check recieve packet was valid or not */
845 if ((r.rue_rxstat & RUE_RXSTAT_VALID) == 0) {
846 ifp->if_ierrors++;
847 goto done;
848 }
849
850 /* No errors; receive the packet. */
851 total_len -= ETHER_CRC_LEN;
852
853 ifp->if_ipackets++;
854 m->m_pkthdr.rcvif = (void *)&sc->rue_qdat;
855 m->m_pkthdr.len = m->m_len = total_len;
856
857 /* Put the packet on the special USB input queue. */
858 usb_ether_input(m);
859
860 RUE_UNLOCK(sc);
861 return;
862
863 done:
864 /* Setup new transfer. */
865 usbd_setup_xfer(xfer, sc->rue_ep[RUE_ENDPT_RX],
866 c, mtod(c->ue_mbuf, char *), UE_BUFSZ,
867 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rue_rxeof);
868 usbd_transfer(xfer);
869 RUE_UNLOCK(sc);
870 }
871
872 /*
873 * A frame was downloaded to the chip. It's safe for us to clean up
874 * the list buffers.
875 */
876
877 static void
878 rue_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
879 {
880 struct ue_chain *c = priv;
881 struct rue_softc *sc = c->ue_sc;
882 struct ifnet *ifp;
883 usbd_status err;
884
885 RUE_LOCK(sc);
886
887 ifp = sc->rue_ifp;
888
889 if (status != USBD_NORMAL_COMPLETION) {
890 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
891 RUE_UNLOCK(sc);
892 return;
893 }
894 device_printf(sc->rue_dev, "usb error on tx: %s\n",
895 usbd_errstr(status));
896 if (status == USBD_STALLED)
897 usbd_clear_endpoint_stall(sc->rue_ep[RUE_ENDPT_TX]);
898 RUE_UNLOCK(sc);
899 return;
900 }
901
902 ifp->if_timer = 0;
903 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
904 usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL, &err);
905
906 if (c->ue_mbuf != NULL) {
907 c->ue_mbuf->m_pkthdr.rcvif = ifp;
908 usb_tx_done(c->ue_mbuf);
909 c->ue_mbuf = NULL;
910 }
911
912 if (err)
913 ifp->if_oerrors++;
914 else
915 ifp->if_opackets++;
916
917 RUE_UNLOCK(sc);
918 }
919
920 static void
921 rue_tick(void *xsc)
922 {
923 struct rue_softc *sc = xsc;
924
925 if (sc == NULL)
926 return;
927 if (sc->rue_dying)
928 return;
929
930 /* Perform periodic stuff in process context */
931 usb_add_task(sc->rue_udev, &sc->rue_tick_task, USB_TASKQ_DRIVER);
932 }
933
934 static void
935 rue_tick_task(void *xsc)
936 {
937 struct rue_softc *sc = xsc;
938 struct ifnet *ifp;
939 struct mii_data *mii;
940
941 if (sc == NULL)
942 return;
943
944 RUE_LOCK(sc);
945
946 ifp = sc->rue_ifp;
947 mii = GET_MII(sc);
948 if (mii == NULL) {
949 RUE_UNLOCK(sc);
950 return;
951 }
952
953 mii_tick(mii);
954 if (!sc->rue_link && mii->mii_media_status & IFM_ACTIVE &&
955 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
956 sc->rue_link++;
957 if (ifp->if_snd.ifq_head != NULL)
958 rue_start(ifp);
959 }
960
961 sc->rue_stat_ch = timeout(rue_tick, sc, hz);
962
963 RUE_UNLOCK(sc);
964 }
965
966 static int
967 rue_encap(struct rue_softc *sc, struct mbuf *m, int idx)
968 {
969 int total_len;
970 struct ue_chain *c;
971 usbd_status err;
972
973 c = &sc->rue_cdata.ue_tx_chain[idx];
974
975 /*
976 * Copy the mbuf data into a contiguous buffer
977 */
978 m_copydata(m, 0, m->m_pkthdr.len, c->ue_buf);
979 c->ue_mbuf = m;
980
981 total_len = m->m_pkthdr.len;
982
983 /*
984 * This is an undocumented behavior.
985 * RTL8150 chip doesn't send frame length smaller than
986 * RUE_MIN_FRAMELEN (60) byte packet.
987 */
988 if (total_len < RUE_MIN_FRAMELEN)
989 total_len = RUE_MIN_FRAMELEN;
990
991 usbd_setup_xfer(c->ue_xfer, sc->rue_ep[RUE_ENDPT_TX],
992 c, c->ue_buf, total_len, USBD_FORCE_SHORT_XFER,
993 10000, rue_txeof);
994
995 /* Transmit */
996 err = usbd_transfer(c->ue_xfer);
997 if (err != USBD_IN_PROGRESS) {
998 rue_stop(sc);
999 return (EIO);
1000 }
1001
1002 sc->rue_cdata.ue_tx_cnt++;
1003
1004 return (0);
1005 }
1006
1007 static void
1008 rue_start(struct ifnet *ifp)
1009 {
1010 struct rue_softc *sc = ifp->if_softc;
1011 struct mbuf *m_head = NULL;
1012
1013 RUE_LOCK(sc);
1014
1015 if (!sc->rue_link) {
1016 RUE_UNLOCK(sc);
1017 return;
1018 }
1019
1020 if (ifp->if_drv_flags & IFF_DRV_OACTIVE) {
1021 RUE_UNLOCK(sc);
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