source: freebsd-mos-driver/if_mos.c@ 276

Last change on this file since 276 was 276, checked in by Rick van der Zwet, 14 years ago

More documentation and cleanups.
File size: 26.0 KB
Line 
1/*-
2 * Copyright (c) 2011 Rick van der Zwet <info@rickvanderzwet.nl>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17/*-
18 * Copyright (c) 2008 Johann Christian Rode <jcrode@gmx.net>
19 *
20 * Permission to use, copy, modify, and distribute this software for any
21 * purpose with or without fee is hereby granted, provided that the above
22 * copyright notice and this permission notice appear in all copies.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
25 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
26 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
27 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
28 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
29 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
30 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
31 */
32
33/*-
34 * Copyright (c) 2005, 2006, 2007 Jonathan Gray <jsg@openbsd.org>
35 *
36 * Permission to use, copy, modify, and distribute this software for any
37 * purpose with or without fee is hereby granted, provided that the above
38 * copyright notice and this permission notice appear in all copies.
39 *
40 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
41 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
42 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
43 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
44 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
45 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
46 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
47 */
48
49/*-
50 * Copyright (c) 1997, 1998, 1999, 2000-2003
51 * Bill Paul <wpaul@windriver.com>. All rights reserved.
52 *
53 * Redistribution and use in source and binary forms, with or without
54 * modification, are permitted provided that the following conditions
55 * are met:
56 * 1. Redistributions of source code must retain the above copyright
57 * notice, this list of conditions and the following disclaimer.
58 * 2. Redistributions in binary form must reproduce the above copyright
59 * notice, this list of conditions and the following disclaimer in the
60 * documentation and/or other materials provided with the distribution.
61 * 3. All advertising materials mentioning features or use of this software
62 * must display the following acknowledgement:
63 * This product includes software developed by Bill Paul.
64 * 4. Neither the name of the author nor the names of any co-contributors
65 * may be used to endorse or promote products derived from this software
66 * without specific prior written permission.
67 *
68 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
69 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
70 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
71 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
72 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
73 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
74 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
75 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
76 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
77 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
78 * THE POSSIBILITY OF SUCH DAMAGE.
79 */
80
81#include <sys/cdefs.h>
82__FBSDID("$FreeBSD$");
83
84/*
85 * Moschip MCS7730/MCS7830 USB to Ethernet controller
86 * The datasheet is available at the following URL:
87 * http://www.moschip.com/data/products/MCS7830/Data%20Sheet_7830.pdf
88 */
89
90/*
91 * The FreeBSD if_mos.c driver is based on various different sources:
92 * The vendor provided driver at the following URL:
93 * http://www.moschip.com/data/products/MCS7830/Driver_FreeBSD_7830.tar.gz
94 *
95 * Mixed together with the OpenBSD if_mos.c driver for validation and checking
96 * and the FreeBSD if_reu.c as reference for the USB Ethernet framework.
97 */
98
99#include <sys/stdint.h>
100#include <sys/stddef.h>
101#include <sys/param.h>
102#include <sys/queue.h>
103#include <sys/types.h>
104#include <sys/systm.h>
105#include <sys/kernel.h>
106#include <sys/bus.h>
107#include <sys/linker_set.h>
108#include <sys/module.h>
109#include <sys/lock.h>
110#include <sys/mutex.h>
111#include <sys/condvar.h>
112#include <sys/sysctl.h>
113#include <sys/sx.h>
114#include <sys/unistd.h>
115#include <sys/callout.h>
116#include <sys/malloc.h>
117#include <sys/priv.h>
118
119#include <dev/usb/usb.h>
120#include <dev/usb/usbdi.h>
121#include <dev/usb/usbdi_util.h>
122#include "usbdevs.h"
123
124#define USB_DEBUG_VAR mos_debug
125#include <dev/usb/usb_debug.h>
126#include <dev/usb/usb_process.h>
127
128#include <dev/usb/net/usb_ethernet.h>
129
130//#include <dev/usb/net/if_mosreg.h>
131#include "if_mosreg.h"
132
133#ifdef USB_DEBUG
134static int mos_debug = 0;
135
136SYSCTL_NODE(_hw_usb, OID_AUTO, mos, CTLFLAG_RW, 0, "USB mos");
137SYSCTL_INT(_hw_usb_mos, OID_AUTO, debug, CTLFLAG_RW, &mos_debug, 0,
138 "Debug level");
139#endif
140
141#define MOS_DPRINTFN(fmt,...) \
142 DPRINTF("mos: %s: " fmt "\n",__FUNCTION__,## __VA_ARGS__)
143
144#define USB_PRODUCT_MOSCHIP_MCS7730 0x7730 /* MCS7730 Ethernet */
145#define USB_PRODUCT_SITECOMEU_LN030 0x0021 /* LN-030 */
146
147
148
149/*
150 * Various supported device vendors/products.
151 */
152static const struct usb_device_id mos_devs[] = {
153 {USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7730, MCS7730)},
154 {USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7830, MCS7830)},
155 {USB_VPI(USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_LN030, MCS7830)},
156};
157
158static int mos_probe(device_t dev);
159static int mos_attach(device_t dev);
160static void mos_attach_post(struct usb_ether *ue);
161static int mos_detach(device_t dev);
162
163static void mos_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error);
164static void mos_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error);
165static void mos_intr_callback(struct usb_xfer *xfer, usb_error_t error);
166static void mos_tick(struct usb_ether *);
167static void mos_start(struct usb_ether *);
168static void mos_init(struct usb_ether *);
169static void mos_chip_init(struct mos_softc *);
170static void mos_stop(struct usb_ether *);
171static int mos_miibus_readreg(device_t, int, int);
172static int mos_miibus_writereg(device_t, int, int, int);
173static void mos_miibus_statchg(device_t);
174static int mos_ifmedia_upd(struct ifnet *);
175static void mos_ifmedia_sts(struct ifnet *, struct ifmediareq *);
176static void mos_reset(struct mos_softc *sc);
177
178static int mos_reg_read_1(struct mos_softc *, int);
179static int mos_reg_read_2(struct mos_softc *, int);
180static int mos_reg_write_1(struct mos_softc *, int, int);
181static int mos_reg_write_2(struct mos_softc *, int, int);
182static int mos_readmac(struct mos_softc *, uint8_t *);
183static int mos_writemac(struct mos_softc *, uint8_t *);
184static int mos_write_mcast(struct mos_softc *, u_char *);
185
186static void mos_setmulti(struct usb_ether *);
187static void mos_setpromisc(struct usb_ether *);
188
189static const struct usb_config mos_config[MOS_ENDPT_MAX] = {
190
191 [MOS_ENDPT_TX] = {
192 .type = UE_BULK,
193 .endpoint = UE_ADDR_ANY,
194 .direction = UE_DIR_OUT,
195 .bufsize = (MCLBYTES + 2),
196 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
197 .callback = mos_bulk_write_callback,
198 .timeout = 10000, /* 10 seconds */
199 },
200
201 [MOS_ENDPT_RX] = {
202 .type = UE_BULK,
203 .endpoint = UE_ADDR_ANY,
204 .direction = UE_DIR_IN,
205 .bufsize = (MCLBYTES + 4 + ETHER_CRC_LEN),
206 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
207 .callback = mos_bulk_read_callback,
208 },
209
210 [MOS_ENDPT_INTR] = {
211 .type = UE_INTERRUPT,
212 .endpoint = UE_ADDR_ANY,
213 .direction = UE_DIR_IN,
214 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
215 .bufsize = 0, /* use wMaxPacketSize */
216 .callback = mos_intr_callback,
217 },
218};
219
220static device_method_t mos_methods[] = {
221 /* Device interface */
222 DEVMETHOD(device_probe, mos_probe),
223 DEVMETHOD(device_attach, mos_attach),
224 DEVMETHOD(device_detach, mos_detach),
225
226 /* bus interface */
227 DEVMETHOD(bus_print_child, bus_generic_print_child),
228 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
229
230 /* MII interface */
231 DEVMETHOD(miibus_readreg, mos_miibus_readreg),
232 DEVMETHOD(miibus_writereg, mos_miibus_writereg),
233 DEVMETHOD(miibus_statchg, mos_miibus_statchg),
234
235 {0, 0}
236};
237
238static driver_t mos_driver = {
239 .name = "mos",
240 .methods = mos_methods,
241 .size = sizeof(struct mos_softc)
242};
243
244static devclass_t mos_devclass;
245
246DRIVER_MODULE(mos, uhub, mos_driver, mos_devclass, NULL, 0);
247DRIVER_MODULE(miibus, mos, miibus_driver, miibus_devclass, 0, 0);
248MODULE_DEPEND(mos, uether, 1, 1, 1);
249MODULE_DEPEND(mos, usb, 1, 1, 1);
250MODULE_DEPEND(mos, ether, 1, 1, 1);
251MODULE_DEPEND(mos, miibus, 1, 1, 1);
252
253static const struct usb_ether_methods mos_ue_methods = {
254 .ue_attach_post = mos_attach_post,
255 .ue_start = mos_start,
256 .ue_init = mos_init,
257 .ue_stop = mos_stop,
258 .ue_tick = mos_tick,
259 .ue_setmulti = mos_setmulti,
260 .ue_setpromisc = mos_setpromisc,
261 .ue_mii_upd = mos_ifmedia_upd,
262 .ue_mii_sts = mos_ifmedia_sts,
263};
264
265
266static int
267mos_reg_read_1(struct mos_softc *sc, int reg)
268{
269 struct usb_device_request req;
270 usb_error_t err;
271 uByte val = 0;
272
273 req.bmRequestType = UT_READ_VENDOR_DEVICE;
274 req.bRequest = MOS_UR_READREG;
275 USETW(req.wValue, 0);
276 USETW(req.wIndex, reg);
277 USETW(req.wLength, 1);
278
279 err = uether_do_request(&sc->sc_ue, &req, &val, 1000);
280
281 if (err) {
282 MOS_DPRINTFN("mos_reg_read_1 error, reg: %d\n", reg);
283 return (-1);
284 }
285 return (val);
286}
287
288static int
289mos_reg_read_2(struct mos_softc *sc, int reg)
290{
291 struct usb_device_request req;
292 usb_error_t err;
293 uWord val;
294
295 USETW(val, 0);
296
297 req.bmRequestType = UT_READ_VENDOR_DEVICE;
298 req.bRequest = MOS_UR_READREG;
299 USETW(req.wValue, 0);
300 USETW(req.wIndex, reg);
301 USETW(req.wLength, 2);
302
303 err = uether_do_request(&sc->sc_ue, &req, &val, 1000);
304
305 if (err) {
306 MOS_DPRINTFN("mos_reg_read_2 error, reg: %d", reg);
307 return (-1);
308 }
309 return (UGETW(val));
310}
311
312static int
313mos_reg_write_1(struct mos_softc *sc, int reg, int aval)
314{
315 struct usb_device_request req;
316 usb_error_t err;
317 uByte val;
318
319 val = aval;
320
321 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
322 req.bRequest = MOS_UR_WRITEREG;
323 USETW(req.wValue, 0);
324 USETW(req.wIndex, reg);
325 USETW(req.wLength, 1);
326
327 err = uether_do_request(&sc->sc_ue, &req, &val, 1000);
328
329 if (err) {
330 MOS_DPRINTFN("mos_reg_write_1 error, reg: %d", reg);
331 return (-1);
332 }
333 return (0);
334}
335
336static int
337mos_reg_write_2(struct mos_softc *sc, int reg, int aval)
338{
339 struct usb_device_request req;
340 usb_error_t err;
341 uWord val;
342
343 USETW(val, aval);
344
345 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
346 req.bRequest = MOS_UR_WRITEREG;
347 USETW(req.wValue, 0);
348 USETW(req.wIndex, reg);
349 USETW(req.wLength, 2);
350
351 err = uether_do_request(&sc->sc_ue, &req, &val, 1000);
352
353 if (err) {
354 MOS_DPRINTFN("mos_reg_write_2 error, reg: %d", reg);
355 return (-1);
356 }
357 return (0);
358}
359
360static int
361mos_readmac(struct mos_softc *sc, u_char *mac)
362{
363 struct usb_device_request req;
364 usb_error_t err;
365
366 req.bmRequestType = UT_READ_VENDOR_DEVICE;
367 req.bRequest = MOS_UR_READREG;
368 USETW(req.wValue, 0);
369 USETW(req.wIndex, MOS_MAC);
370 USETW(req.wLength, ETHER_ADDR_LEN);
371
372 err = uether_do_request(&sc->sc_ue, &req, mac, 1000);
373
374 if (err) {
375 return (-1);
376 }
377 return (0);
378}
379
380static int
381mos_writemac(struct mos_softc *sc, uint8_t *mac)
382{
383 struct usb_device_request req;
384 usb_error_t err;
385
386 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
387 req.bRequest = MOS_UR_WRITEREG;
388 USETW(req.wValue, 0);
389 USETW(req.wIndex, MOS_MAC);
390 USETW(req.wLength, ETHER_ADDR_LEN);
391
392 err = uether_do_request(&sc->sc_ue, &req, mac, 1000);
393
394 if (err) {
395 MOS_DPRINTFN("mos_writemac error");
396 return (-1);
397 }
398 return (0);
399}
400
401static int
402mos_write_mcast(struct mos_softc *sc, u_char *hashtbl)
403{
404 struct usb_device_request req;
405 usb_error_t err;
406
407 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
408 req.bRequest = MOS_UR_WRITEREG;
409 USETW(req.wValue, 0);
410 USETW(req.wIndex, MOS_MCAST_TABLE);
411 USETW(req.wLength, 8);
412
413 err = uether_do_request(&sc->sc_ue, &req, hashtbl, 1000);
414
415 if (err) {
416 MOS_DPRINTFN("mos_reg_mcast error");
417 return (-1);
418 }
419 return (0);
420}
421
422static int
423mos_miibus_readreg(struct device *dev, int phy, int reg)
424{
425 struct mos_softc *sc = device_get_softc(dev);
426 uWord val;
427 int i, res, locked;
428
429 USETW(val, 0);
430
431 locked = mtx_owned(&sc->sc_mtx);
432 if (!locked)
433 MOS_LOCK(sc);
434
435 mos_reg_write_2(sc, MOS_PHY_DATA, 0);
436 mos_reg_write_1(sc, MOS_PHY_CTL, (phy & MOS_PHYCTL_PHYADDR) |
437 MOS_PHYCTL_READ);
438 mos_reg_write_1(sc, MOS_PHY_STS, (reg & MOS_PHYSTS_PHYREG) |
439 MOS_PHYSTS_PENDING);
440
441 for (i = 0; i < MOS_TIMEOUT; i++) {
442 if (mos_reg_read_1(sc, MOS_PHY_STS) & MOS_PHYSTS_READY)
443 break;
444 }
445 if (i == MOS_TIMEOUT) {
446 MOS_DPRINTFN("MII read timeout");
447 }
448 res = mos_reg_read_2(sc, MOS_PHY_DATA);
449
450 if (!locked)
451 MOS_UNLOCK(sc);
452 return (res);
453}
454
455static int
456mos_miibus_writereg(device_t dev, int phy, int reg, int val)
457{
458 struct mos_softc *sc = device_get_softc(dev);
459 int i, locked;
460
461 locked = mtx_owned(&sc->sc_mtx);
462 if (!locked)
463 MOS_LOCK(sc);
464
465 mos_reg_write_2(sc, MOS_PHY_DATA, val);
466 mos_reg_write_1(sc, MOS_PHY_CTL, (phy & MOS_PHYCTL_PHYADDR) |
467 MOS_PHYCTL_WRITE);
468 mos_reg_write_1(sc, MOS_PHY_STS, (reg & MOS_PHYSTS_PHYREG) |
469 MOS_PHYSTS_PENDING);
470
471 for (i = 0; i < MOS_TIMEOUT; i++) {
472 if (mos_reg_read_1(sc, MOS_PHY_STS) & MOS_PHYSTS_READY)
473 break;
474 }
475 if (i == MOS_TIMEOUT)
476 MOS_DPRINTFN("MII write timeout");
477
478 if (!locked)
479 MOS_UNLOCK(sc);
480 return 0;
481}
482
483static void
484mos_miibus_statchg(device_t dev)
485{
486 struct mos_softc *sc = device_get_softc(dev);
487 struct mii_data *mii = GET_MII(sc);
488 int val, err, locked;
489
490 locked = mtx_owned(&sc->sc_mtx);
491 if (!locked)
492 MOS_LOCK(sc);
493
494 /* disable RX, TX prior to changing FDX, SPEEDSEL */
495 val = mos_reg_read_1(sc, MOS_CTL);
496 val &= ~(MOS_CTL_TX_ENB | MOS_CTL_RX_ENB);
497 mos_reg_write_1(sc, MOS_CTL, val);
498
499 /* reset register which counts dropped frames */
500 mos_reg_write_1(sc, MOS_FRAME_DROP_CNT, 0);
501
502 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX)
503 val |= MOS_CTL_FDX_ENB;
504 else
505 val &= ~(MOS_CTL_FDX_ENB);
506
507 switch (IFM_SUBTYPE(mii->mii_media_active)) {
508 case IFM_100_TX:
509 val |= MOS_CTL_SPEEDSEL;
510 break;
511 case IFM_10_T:
512 val &= ~(MOS_CTL_SPEEDSEL);
513 break;
514 }
515
516 /* re-enable TX, RX */
517 val |= (MOS_CTL_TX_ENB | MOS_CTL_RX_ENB);
518 err = mos_reg_write_1(sc, MOS_CTL, val);
519
520 if (err)
521 MOS_DPRINTFN("media change failed");
522
523 if (!locked)
524 MOS_UNLOCK(sc);
525}
526
527/*
528 * Set media options.
529 */
530static int
531mos_ifmedia_upd(struct ifnet *ifp)
532{
533 struct mos_softc *sc = ifp->if_softc;
534 struct mii_data *mii = GET_MII(sc);
535
536 MOS_LOCK_ASSERT(sc, MA_OWNED);
537
538 sc->mos_link = 0;
539 if (mii->mii_instance) {
540 struct mii_softc *miisc;
541
542 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
543 mii_phy_reset(miisc);
544 }
545 mii_mediachg(mii);
546 return (0);
547}
548
549/*
550 * Report current media status.
551 */
552static void
553mos_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
554{
555 struct mos_softc *sc = ifp->if_softc;
556 struct mii_data *mii = GET_MII(sc);
557
558 MOS_LOCK(sc);
559 mii_pollstat(mii);
560 MOS_UNLOCK(sc);
561
562 ifmr->ifm_active = mii->mii_media_active;
563 ifmr->ifm_status = mii->mii_media_status;
564}
565
566static void
567mos_setpromisc(struct usb_ether *ue)
568{
569 struct mos_softc *sc = uether_getsc(ue);
570 struct ifnet *ifp = uether_getifp(ue);
571
572 u_int8_t rxmode;
573
574 MOS_LOCK_ASSERT(sc, MA_OWNED);
575
576 rxmode = mos_reg_read_1(sc, MOS_CTL);
577
578 /* If we want promiscuous mode, set the allframes bit. */
579 if (ifp->if_flags & IFF_PROMISC) {
580 rxmode |= MOS_CTL_RX_PROMISC;
581 } else {
582 rxmode &= ~MOS_CTL_RX_PROMISC;
583 }
584
585 mos_reg_write_1(sc, MOS_CTL, rxmode);
586}
587
588
589
590static void
591mos_setmulti(struct usb_ether *ue)
592{
593 struct mos_softc *sc = uether_getsc(ue);
594 struct ifnet *ifp = uether_getifp(ue);
595 struct ifmultiaddr *ifma;
596
597 u_int32_t h = 0;
598 u_int8_t rxmode;
599 u_int8_t hashtbl[8] = {0, 0, 0, 0, 0, 0, 0, 0};
600 int allmulti = 0;
601
602 MOS_LOCK_ASSERT(sc, MA_OWNED);
603
604 rxmode = mos_reg_read_1(sc, MOS_CTL);
605
606 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC)
607 allmulti = 1;
608
609 /* get all new ones */
610 if_maddr_rlock(ifp);
611 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
612 if (ifma->ifma_addr->sa_family != AF_LINK) {
613 allmulti = 1;
614 continue;
615 };
616 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
617 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
618 //h = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN) >> 26;
619 hashtbl[h / 8] |= 1 << (h % 8);
620 }
621 if_maddr_runlock(ifp);
622
623 /* now program new ones */
624 if (allmulti == 1) {
625 rxmode |= MOS_CTL_ALLMULTI;
626 mos_reg_write_1(sc, MOS_CTL, rxmode);
627 } else {
628 rxmode &= ~MOS_CTL_ALLMULTI;
629 mos_write_mcast(sc, (void *)&hashtbl);
630 mos_reg_write_1(sc, MOS_CTL, rxmode);
631 }
632}
633
634static void
635mos_reset(struct mos_softc *sc)
636{
637 u_int8_t ctl;
638
639 ctl = mos_reg_read_1(sc, MOS_CTL);
640 ctl &= ~(MOS_CTL_RX_PROMISC | MOS_CTL_ALLMULTI | MOS_CTL_TX_ENB |
641 MOS_CTL_RX_ENB);
642 /* Disable RX, TX, promiscuous and allmulticast mode */
643 mos_reg_write_1(sc, MOS_CTL, ctl);
644
645 /* Reset frame drop counter register to zero */
646 mos_reg_write_1(sc, MOS_FRAME_DROP_CNT, 0);
647
648 /* Wait a little while for the chip to get its brains in order. */
649 DELAY(1000);
650 return;
651}
652
653static void
654mos_chip_init(struct mos_softc *sc)
655{
656 int i;
657
658 /*
659 * Rev.C devices have a pause threshold register which needs to be set
660 * at startup.
661 */
662 if (mos_reg_read_1(sc, MOS_PAUSE_TRHD) != -1) {
663 for (i = 0; i < MOS_PAUSE_REWRITES; i++)
664 mos_reg_write_1(sc, MOS_PAUSE_TRHD, 0);
665 }
666 sc->mos_phyaddrs[0] = 1;
667 sc->mos_phyaddrs[1] = 0xFF;
668}
669
670/*
671 * Probe for a MCS7x30 chip.
672 */
673static int
674mos_probe(device_t dev)
675{
676 DPRINTFN(11, "mos: probe\n");
677 struct usb_attach_arg *uaa = device_get_ivars(dev);
678
679 if (uaa->usb_mode != USB_MODE_HOST) {
680 DPRINTFN(11, "mos: not USB_MODE_HOST\n");
681 return (ENXIO);
682 }
683 if (uaa->info.bConfigNum != MOS_CONFIG_NO) {
684 DPRINTFN(11, "mos: not MOS_CONFIG_NO %i vs %i\n", uaa->info.bConfigNum, MOS_CONFIG_NO);
685 return (ENXIO);
686 }
687 if (uaa->info.bIfaceIndex != MOS_IFACE_IDX) {
688 DPRINTFN(11, "mos: not MOS_IFACE_IDX %i vs %i\n", uaa->info.bIfaceIndex, MOS_IFACE_IDX);
689 return (ENXIO);
690 }
691 DPRINTFN(11, "mos: probe by generic means\n");
692 int retval = usbd_lookup_id_by_uaa(mos_devs, sizeof(mos_devs), uaa);
693
694 DPRINTFN(11, "mos: probe retval: %i (ENXIO:%i)\n", retval, ENXIO);
695 return retval;
696}
697
698/*
699 * Attach the interface. Allocate softc structures, do ifmedia
700 * setup and ethernet/BPF attach.
701 */
702static int
703mos_attach(device_t dev)
704{
705 struct usb_attach_arg *uaa = device_get_ivars(dev);
706 struct mos_softc *sc = device_get_softc(dev);
707 struct usb_ether *ue = &sc->sc_ue;
708
709 uint8_t iface_index;
710 int error;
711
712 sc->mos_flags = USB_GET_DRIVER_INFO(uaa);
713
714 device_set_usb_desc(dev);
715 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
716
717 iface_index = MOS_IFACE_IDX;
718 error = usbd_transfer_setup(uaa->device, &iface_index,
719 sc->sc_xfer, mos_config, MOS_ENDPT_MAX,
720 sc, &sc->sc_mtx);
721
722 if (error) {
723 device_printf(dev, "allocating USB transfers failed\n");
724 goto detach;
725 }
726 ue->ue_sc = sc;
727 ue->ue_dev = dev;
728 ue->ue_udev = uaa->device;
729 ue->ue_mtx = &sc->sc_mtx;
730 ue->ue_methods = &mos_ue_methods;
731
732
733 if (sc->mos_flags & MCS7730) {
734 DPRINTF("model: MCS7730\n");
735 } else if (sc->mos_flags & MCS7830) {
736 DPRINTF("model: MCS7830\n");
737 }
738 error = uether_ifattach(ue);
739 if (error) {
740 device_printf(dev, "could not attach interface\n");
741 goto detach;
742 }
743 return (0); /* success */
744
745
746detach:
747 mos_detach(dev);
748 return (ENXIO); /* failure */
749}
750
751
752static void
753mos_attach_post(struct usb_ether *ue)
754{
755 struct mos_softc *sc = uether_getsc(ue);
756
757 /*
758 * Read MAC address, inform the world.
759 */
760 int err = mos_readmac(sc, ue->ue_eaddr);
761
762 if (err)
763 MOS_DPRINTFN("couldn't get MAC address");
764
765 MOS_DPRINTFN("address: %s", ether_sprintf(ue->ue_eaddr));
766
767 mos_chip_init(sc);
768}
769
770static int
771mos_detach(device_t dev)
772{
773 struct mos_softc *sc = device_get_softc(dev);
774 struct usb_ether *ue = &sc->sc_ue;
775
776 usbd_transfer_unsetup(sc->sc_xfer, MOS_ENDPT_MAX);
777 uether_ifdetach(ue);
778 mtx_destroy(&sc->sc_mtx);
779
780 return (0);
781}
782
783
784
785
786/*
787 * A frame has been uploaded: pass the resulting mbuf chain up to
788 * the higher level protocols.
789 */
790static void
791mos_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
792{
793 struct mos_softc *sc = usbd_xfer_softc(xfer);
794 struct usb_ether *ue = &sc->sc_ue;
795 struct ifnet *ifp = uether_getifp(ue);
796
797 uint8_t rxstat = 0;
798 uint32_t actlen;
799 uint16_t pktlen = 0;
800 struct usb_page_cache *pc;
801
802
803 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
804 pc = usbd_xfer_get_frame(xfer, 0);
805
806 switch (USB_GET_STATE(xfer)) {
807 case USB_ST_TRANSFERRED:
808 MOS_DPRINTFN("actlen : %d", actlen);
809 if (actlen <= 1) {
810 ifp->if_ierrors++;
811 goto tr_setup;
812 }
813 /* evaluate status byte at the end */
814 usbd_copy_out(pc, actlen - sizeof(rxstat), &rxstat,
815 sizeof(rxstat));
816
817 if (rxstat != MOS_RXSTS_VALID) {
818 MOS_DPRINTFN("erroneous frame received");
819 if (rxstat & MOS_RXSTS_SHORT_FRAME)
820 MOS_DPRINTFN("frame size less than 64 bytes");
821 if (rxstat & MOS_RXSTS_LARGE_FRAME)
822 MOS_DPRINTFN("frame size larger than 1532 bytes");
823 if (rxstat & MOS_RXSTS_CRC_ERROR)
824 MOS_DPRINTFN("CRC error");
825 if (rxstat & MOS_RXSTS_ALIGN_ERROR)
826 MOS_DPRINTFN("alignment error");
827 ifp->if_ierrors++;
828 goto tr_setup;
829 }
830 /* Remember the last byte was used for the status fields */
831 pktlen = actlen - 1;
832 if (pktlen < sizeof(struct ether_header)) {
833 MOS_DPRINTFN("error: pktlen %i is smaller than ether_header %i", pktlen, sizeof(struct ether_header));
834 ifp->if_ierrors++;
835 goto tr_setup;
836 }
837 uether_rxbuf(ue, pc, 0, actlen);
838 /* FALLTHROUGH */
839 case USB_ST_SETUP:
840tr_setup:
841 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
842 usbd_transfer_submit(xfer);
843 uether_rxflush(ue);
844 return;
845 default: /* Error */
846 MOS_DPRINTFN("bulk read error, %s", usbd_errstr(error));
847 if (error != USB_ERR_CANCELLED) {
848 /* try to clear stall first */
849 usbd_xfer_set_stall(xfer);
850 goto tr_setup;
851 }
852 MOS_DPRINTFN("start rx %i", usbd_xfer_max_len(xfer));
853 return;
854 }
855}
856
857/*
858 * A frame was downloaded to the chip. It's safe for us to clean up
859 * the list buffers.
860 */
861
862static void
863mos_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
864{
865 struct mos_softc *sc = usbd_xfer_softc(xfer);
866 struct ifnet *ifp = uether_getifp(&sc->sc_ue);
867 struct usb_page_cache *pc;
868 struct mbuf *m;
869
870
871
872 switch (USB_GET_STATE(xfer)) {
873 case USB_ST_TRANSFERRED:
874 MOS_DPRINTFN("transfer of complete");
875 ifp->if_opackets++;
876 /* FALLTHROUGH */
877 case USB_ST_SETUP:
878tr_setup:
879 /*
880 * XXX: don't send anything if there is no link?
881 */
882 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
883 if (m == NULL)
884 return;
885
886 pc = usbd_xfer_get_frame(xfer, 0);
887 usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);
888
889 usbd_xfer_set_frame_len(xfer, 0, m->m_pkthdr.len);
890
891
892 /*
893 * if there's a BPF listener, bounce a copy
894 * of this frame to him:
895 */
896 BPF_MTAP(ifp, m);
897
898 m_freem(m);
899
900 usbd_transfer_submit(xfer);
901
902 ifp->if_opackets++;
903 return;
904 default: /* Error */
905 MOS_DPRINTFN("usb error on tx: %s\n", usbd_errstr(error));
906 ifp->if_oerrors++;
907 if (error != USB_ERR_CANCELLED) {
908 /* try to clear stall first */
909 usbd_xfer_set_stall(xfer);
910 goto tr_setup;
911 }
912 return;
913 }
914}
915
916static void
917mos_tick(struct usb_ether *ue)
918{
919 struct mos_softc *sc = uether_getsc(ue);
920 struct mii_data *mii = GET_MII(sc);
921
922 MOS_LOCK_ASSERT(sc, MA_OWNED);
923
924 mii_tick(mii);
925 if (!sc->mos_link && mii->mii_media_status & IFM_ACTIVE &&
926 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
927 MOS_DPRINTFN("got link");
928 sc->mos_link++;
929 mos_start(ue);
930 }
931}
932
933
934static void
935mos_start(struct usb_ether *ue)
936{
937 struct mos_softc *sc = uether_getsc(ue);
938
939 /*
940 * start the USB transfers, if not already started:
941 */
942 usbd_transfer_start(sc->sc_xfer[MOS_ENDPT_TX]);
943 usbd_transfer_start(sc->sc_xfer[MOS_ENDPT_RX]);
944 usbd_transfer_start(sc->sc_xfer[MOS_ENDPT_INTR]);
945}
946
947static void
948mos_init(struct usb_ether *ue)
949{
950 struct mos_softc *sc = uether_getsc(ue);
951 struct ifnet *ifp = uether_getifp(ue);
952 u_int8_t rxmode;
953
954 MOS_LOCK_ASSERT(sc, MA_OWNED);
955
956 /*
957 * Cancel pending I/O and free all RX/TX buffers.
958 */
959 mos_reset(sc);
960
961 /*
962 * Write MAC address
963 */
964 mos_writemac(sc, IF_LLADDR(ifp));
965
966
967
968 /* Read and set transmitter IPG values */
969 sc->mos_ipgs[0] = mos_reg_read_1(sc, MOS_IPG0);
970 sc->mos_ipgs[1] = mos_reg_read_1(sc, MOS_IPG1);
971 mos_reg_write_1(sc, MOS_IPG0, sc->mos_ipgs[0]);
972 mos_reg_write_1(sc, MOS_IPG1, sc->mos_ipgs[1]);
973
974 /*
975 * Enable receiver and transmitter, bridge controls speed/duplex
976 * mode
977 */
978 rxmode = mos_reg_read_1(sc, MOS_CTL);
979 rxmode |= MOS_CTL_RX_ENB | MOS_CTL_TX_ENB | MOS_CTL_BS_ENB;
980 rxmode &= ~(MOS_CTL_SLEEP);
981
982 mos_setpromisc(ue);
983
984 /* XXX: broadcast mode? */
985
986 mos_reg_write_1(sc, MOS_CTL, rxmode);
987
988 /* Load the multicast filter. */
989 mos_setmulti(ue);
990
991 ifp->if_drv_flags |= IFF_DRV_RUNNING;
992 mos_start(ue);
993}
994
995
996static void
997mos_intr_callback(struct usb_xfer *xfer, usb_error_t error)
998{
999 struct mos_softc *sc = usbd_xfer_softc(xfer);
1000 struct ifnet *ifp = uether_getifp(&sc->sc_ue);
1001 struct usb_page_cache *pc;
1002 int actlen;
1003 long pkt;
1004
1005 ifp->if_oerrors++;
1006
1007 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1008 MOS_DPRINTFN("actlen %i", actlen);
1009
1010 switch (USB_GET_STATE(xfer)) {
1011 case USB_ST_TRANSFERRED:
1012
1013 pc = usbd_xfer_get_frame(xfer, 0);
1014 usbd_copy_out(pc, 0, &pkt, sizeof(pkt));
1015 /* FALLTHROUGH */
1016 case USB_ST_SETUP:
1017tr_setup:
1018 return;
1019 default: /* Error */
1020 if (error != USB_ERR_CANCELLED) {
1021 /* try to clear stall first */
1022 usbd_xfer_set_stall(xfer);
1023 goto tr_setup;
1024 }
1025 return;
1026 }
1027}
1028
1029
1030/*
1031 * Stop the adapter and free any mbufs allocated to the
1032 * RX and TX lists.
1033 */
1034static void
1035mos_stop(struct usb_ether *ue)
1036{
1037 struct mos_softc *sc = uether_getsc(ue);
1038 struct ifnet *ifp = uether_getifp(ue);
1039
1040 mos_reset(sc);
1041
1042 MOS_LOCK_ASSERT(sc, MA_OWNED);
1043 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1044
1045 /*
1046 * stop all the transfers, if not already stopped:
1047 */
1048 usbd_transfer_stop(sc->sc_xfer[MOS_ENDPT_TX]);
1049 usbd_transfer_stop(sc->sc_xfer[MOS_ENDPT_RX]);
1050 usbd_transfer_stop(sc->sc_xfer[MOS_ENDPT_INTR]);
1051
1052 sc->mos_link = 0;
1053}
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