xref: /freebsd/sys/dev/usb/net/if_axe.c (revision a9d2f8d84f69e98100b5746816b35666bcf992ac)
1 /*-
2  * Copyright (c) 1997, 1998, 1999, 2000-2003
3  *	Bill Paul <wpaul@windriver.com>.  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 
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35 
36 /*
37  * ASIX Electronics AX88172/AX88178/AX88778 USB 2.0 ethernet driver.
38  * Used in the LinkSys USB200M and various other adapters.
39  *
40  * Manuals available from:
41  * http://www.asix.com.tw/datasheet/mac/Ax88172.PDF
42  * Note: you need the manual for the AX88170 chip (USB 1.x ethernet
43  * controller) to find the definitions for the RX control register.
44  * http://www.asix.com.tw/datasheet/mac/Ax88170.PDF
45  *
46  * Written by Bill Paul <wpaul@windriver.com>
47  * Senior Engineer
48  * Wind River Systems
49  */
50 
51 /*
52  * The AX88172 provides USB ethernet supports at 10 and 100Mbps.
53  * It uses an external PHY (reference designs use a RealTek chip),
54  * and has a 64-bit multicast hash filter. There is some information
55  * missing from the manual which one needs to know in order to make
56  * the chip function:
57  *
58  * - You must set bit 7 in the RX control register, otherwise the
59  *   chip won't receive any packets.
60  * - You must initialize all 3 IPG registers, or you won't be able
61  *   to send any packets.
62  *
63  * Note that this device appears to only support loading the station
64  * address via autload from the EEPROM (i.e. there's no way to manaully
65  * set it).
66  *
67  * (Adam Weinberger wanted me to name this driver if_gir.c.)
68  */
69 
70 /*
71  * Ax88178 and Ax88772 support backported from the OpenBSD driver.
72  * 2007/02/12, J.R. Oldroyd, fbsd@opal.com
73  *
74  * Manual here:
75  * http://www.asix.com.tw/FrootAttach/datasheet/AX88178_datasheet_Rev10.pdf
76  * http://www.asix.com.tw/FrootAttach/datasheet/AX88772_datasheet_Rev10.pdf
77  */
78 
79 #include <sys/stdint.h>
80 #include <sys/stddef.h>
81 #include <sys/param.h>
82 #include <sys/queue.h>
83 #include <sys/types.h>
84 #include <sys/systm.h>
85 #include <sys/kernel.h>
86 #include <sys/bus.h>
87 #include <sys/module.h>
88 #include <sys/lock.h>
89 #include <sys/mutex.h>
90 #include <sys/condvar.h>
91 #include <sys/sysctl.h>
92 #include <sys/sx.h>
93 #include <sys/unistd.h>
94 #include <sys/callout.h>
95 #include <sys/malloc.h>
96 #include <sys/priv.h>
97 
98 #include <dev/usb/usb.h>
99 #include <dev/usb/usbdi.h>
100 #include <dev/usb/usbdi_util.h>
101 #include "usbdevs.h"
102 
103 #define	USB_DEBUG_VAR axe_debug
104 #include <dev/usb/usb_debug.h>
105 #include <dev/usb/usb_process.h>
106 
107 #include <dev/usb/net/usb_ethernet.h>
108 #include <dev/usb/net/if_axereg.h>
109 
110 /*
111  * AXE_178_MAX_FRAME_BURST
112  * max frame burst size for Ax88178 and Ax88772
113  *	0	2048 bytes
114  *	1	4096 bytes
115  *	2	8192 bytes
116  *	3	16384 bytes
117  * use the largest your system can handle without USB stalling.
118  *
119  * NB: 88772 parts appear to generate lots of input errors with
120  * a 2K rx buffer and 8K is only slightly faster than 4K on an
121  * EHCI port on a T42 so change at your own risk.
122  */
123 #define AXE_178_MAX_FRAME_BURST	1
124 
125 #ifdef USB_DEBUG
126 static int axe_debug = 0;
127 
128 SYSCTL_NODE(_hw_usb, OID_AUTO, axe, CTLFLAG_RW, 0, "USB axe");
129 SYSCTL_INT(_hw_usb_axe, OID_AUTO, debug, CTLFLAG_RW, &axe_debug, 0,
130     "Debug level");
131 #endif
132 
133 /*
134  * Various supported device vendors/products.
135  */
136 static const STRUCT_USB_HOST_ID axe_devs[] = {
137 #define	AXE_DEV(v,p,i) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) }
138 	AXE_DEV(ABOCOM, UF200, 0),
139 	AXE_DEV(ACERCM, EP1427X2, 0),
140 	AXE_DEV(APPLE, ETHERNET, AXE_FLAG_772),
141 	AXE_DEV(ASIX, AX88172, 0),
142 	AXE_DEV(ASIX, AX88178, AXE_FLAG_178),
143 	AXE_DEV(ASIX, AX88772, AXE_FLAG_772),
144 	AXE_DEV(ASIX, AX88772A, AXE_FLAG_772A),
145 	AXE_DEV(ASIX, AX88772B, AXE_FLAG_772B),
146 	AXE_DEV(ATEN, UC210T, 0),
147 	AXE_DEV(BELKIN, F5D5055, AXE_FLAG_178),
148 	AXE_DEV(BILLIONTON, USB2AR, 0),
149 	AXE_DEV(CISCOLINKSYS, USB200MV2, AXE_FLAG_772A),
150 	AXE_DEV(COREGA, FETHER_USB2_TX, 0),
151 	AXE_DEV(DLINK, DUBE100, 0),
152 	AXE_DEV(DLINK, DUBE100B1, AXE_FLAG_772),
153 	AXE_DEV(GOODWAY, GWUSB2E, 0),
154 	AXE_DEV(IODATA, ETGUS2, AXE_FLAG_178),
155 	AXE_DEV(JVC, MP_PRX1, 0),
156 	AXE_DEV(LINKSYS2, USB200M, 0),
157 	AXE_DEV(LINKSYS4, USB1000, AXE_FLAG_178),
158 	AXE_DEV(LOGITEC, LAN_GTJU2A, AXE_FLAG_178),
159 	AXE_DEV(MELCO, LUAU2KTX, 0),
160 	AXE_DEV(MELCO, LUA3U2AGT, AXE_FLAG_178),
161 	AXE_DEV(NETGEAR, FA120, 0),
162 	AXE_DEV(OQO, ETHER01PLUS, AXE_FLAG_772),
163 	AXE_DEV(PLANEX3, GU1000T, AXE_FLAG_178),
164 	AXE_DEV(SITECOM, LN029, 0),
165 	AXE_DEV(SITECOMEU, LN028, AXE_FLAG_178),
166 	AXE_DEV(SYSTEMTALKS, SGCX2UL, 0),
167 #undef AXE_DEV
168 };
169 
170 static device_probe_t axe_probe;
171 static device_attach_t axe_attach;
172 static device_detach_t axe_detach;
173 
174 static usb_callback_t axe_bulk_read_callback;
175 static usb_callback_t axe_bulk_write_callback;
176 
177 static miibus_readreg_t axe_miibus_readreg;
178 static miibus_writereg_t axe_miibus_writereg;
179 static miibus_statchg_t axe_miibus_statchg;
180 
181 static uether_fn_t axe_attach_post;
182 static uether_fn_t axe_init;
183 static uether_fn_t axe_stop;
184 static uether_fn_t axe_start;
185 static uether_fn_t axe_tick;
186 static uether_fn_t axe_setmulti;
187 static uether_fn_t axe_setpromisc;
188 
189 static int	axe_ifmedia_upd(struct ifnet *);
190 static void	axe_ifmedia_sts(struct ifnet *, struct ifmediareq *);
191 static int	axe_cmd(struct axe_softc *, int, int, int, void *);
192 static void	axe_ax88178_init(struct axe_softc *);
193 static void	axe_ax88772_init(struct axe_softc *);
194 static void	axe_ax88772_phywake(struct axe_softc *);
195 static void	axe_ax88772a_init(struct axe_softc *);
196 static void	axe_ax88772b_init(struct axe_softc *);
197 static int	axe_get_phyno(struct axe_softc *, int);
198 
199 static const struct usb_config axe_config[AXE_N_TRANSFER] = {
200 
201 	[AXE_BULK_DT_WR] = {
202 		.type = UE_BULK,
203 		.endpoint = UE_ADDR_ANY,
204 		.direction = UE_DIR_OUT,
205 		.frames = 16,
206 		.bufsize = 16 * MCLBYTES,
207 		.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
208 		.callback = axe_bulk_write_callback,
209 		.timeout = 10000,	/* 10 seconds */
210 	},
211 
212 	[AXE_BULK_DT_RD] = {
213 		.type = UE_BULK,
214 		.endpoint = UE_ADDR_ANY,
215 		.direction = UE_DIR_IN,
216 		.bufsize = 16384,	/* bytes */
217 		.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
218 		.callback = axe_bulk_read_callback,
219 		.timeout = 0,	/* no timeout */
220 	},
221 };
222 
223 static const struct ax88772b_mfb ax88772b_mfb_table[] = {
224 	{ 0x8000, 0x8001, 2048 },
225 	{ 0x8100, 0x8147, 4096},
226 	{ 0x8200, 0x81EB, 6144},
227 	{ 0x8300, 0x83D7, 8192},
228 	{ 0x8400, 0x851E, 16384},
229 	{ 0x8500, 0x8666, 20480},
230 	{ 0x8600, 0x87AE, 24576},
231 	{ 0x8700, 0x8A3D, 32768}
232 };
233 
234 static device_method_t axe_methods[] = {
235 	/* Device interface */
236 	DEVMETHOD(device_probe, axe_probe),
237 	DEVMETHOD(device_attach, axe_attach),
238 	DEVMETHOD(device_detach, axe_detach),
239 
240 	/* bus interface */
241 	DEVMETHOD(bus_print_child, bus_generic_print_child),
242 
243 	/* MII interface */
244 	DEVMETHOD(miibus_readreg, axe_miibus_readreg),
245 	DEVMETHOD(miibus_writereg, axe_miibus_writereg),
246 	DEVMETHOD(miibus_statchg, axe_miibus_statchg),
247 
248 	{0, 0}
249 };
250 
251 static driver_t axe_driver = {
252 	.name = "axe",
253 	.methods = axe_methods,
254 	.size = sizeof(struct axe_softc),
255 };
256 
257 static devclass_t axe_devclass;
258 
259 DRIVER_MODULE(axe, uhub, axe_driver, axe_devclass, NULL, 0);
260 DRIVER_MODULE(miibus, axe, miibus_driver, miibus_devclass, 0, 0);
261 MODULE_DEPEND(axe, uether, 1, 1, 1);
262 MODULE_DEPEND(axe, usb, 1, 1, 1);
263 MODULE_DEPEND(axe, ether, 1, 1, 1);
264 MODULE_DEPEND(axe, miibus, 1, 1, 1);
265 MODULE_VERSION(axe, 1);
266 
267 static const struct usb_ether_methods axe_ue_methods = {
268 	.ue_attach_post = axe_attach_post,
269 	.ue_start = axe_start,
270 	.ue_init = axe_init,
271 	.ue_stop = axe_stop,
272 	.ue_tick = axe_tick,
273 	.ue_setmulti = axe_setmulti,
274 	.ue_setpromisc = axe_setpromisc,
275 	.ue_mii_upd = axe_ifmedia_upd,
276 	.ue_mii_sts = axe_ifmedia_sts,
277 };
278 
279 static int
280 axe_cmd(struct axe_softc *sc, int cmd, int index, int val, void *buf)
281 {
282 	struct usb_device_request req;
283 	usb_error_t err;
284 
285 	AXE_LOCK_ASSERT(sc, MA_OWNED);
286 
287 	req.bmRequestType = (AXE_CMD_IS_WRITE(cmd) ?
288 	    UT_WRITE_VENDOR_DEVICE :
289 	    UT_READ_VENDOR_DEVICE);
290 	req.bRequest = AXE_CMD_CMD(cmd);
291 	USETW(req.wValue, val);
292 	USETW(req.wIndex, index);
293 	USETW(req.wLength, AXE_CMD_LEN(cmd));
294 
295 	err = uether_do_request(&sc->sc_ue, &req, buf, 1000);
296 
297 	return (err);
298 }
299 
300 static int
301 axe_miibus_readreg(device_t dev, int phy, int reg)
302 {
303 	struct axe_softc *sc = device_get_softc(dev);
304 	uint16_t val;
305 	int locked;
306 
307 	if (sc->sc_phyno != phy)
308 		return (0);
309 
310 	locked = mtx_owned(&sc->sc_mtx);
311 	if (!locked)
312 		AXE_LOCK(sc);
313 
314 	axe_cmd(sc, AXE_CMD_MII_OPMODE_SW, 0, 0, NULL);
315 	axe_cmd(sc, AXE_CMD_MII_READ_REG, reg, phy, &val);
316 	axe_cmd(sc, AXE_CMD_MII_OPMODE_HW, 0, 0, NULL);
317 
318 	val = le16toh(val);
319 	if (AXE_IS_772(sc) && reg == MII_BMSR) {
320 		/*
321 		 * BMSR of AX88772 indicates that it supports extended
322 		 * capability but the extended status register is
323 		 * revered for embedded ethernet PHY. So clear the
324 		 * extended capability bit of BMSR.
325 		 */
326 		val &= ~BMSR_EXTCAP;
327 	}
328 
329 	if (!locked)
330 		AXE_UNLOCK(sc);
331 	return (val);
332 }
333 
334 static int
335 axe_miibus_writereg(device_t dev, int phy, int reg, int val)
336 {
337 	struct axe_softc *sc = device_get_softc(dev);
338 	int locked;
339 
340 	val = htole32(val);
341 
342 	if (sc->sc_phyno != phy)
343 		return (0);
344 
345 	locked = mtx_owned(&sc->sc_mtx);
346 	if (!locked)
347 		AXE_LOCK(sc);
348 
349 	axe_cmd(sc, AXE_CMD_MII_OPMODE_SW, 0, 0, NULL);
350 	axe_cmd(sc, AXE_CMD_MII_WRITE_REG, reg, phy, &val);
351 	axe_cmd(sc, AXE_CMD_MII_OPMODE_HW, 0, 0, NULL);
352 
353 	if (!locked)
354 		AXE_UNLOCK(sc);
355 	return (0);
356 }
357 
358 static void
359 axe_miibus_statchg(device_t dev)
360 {
361 	struct axe_softc *sc = device_get_softc(dev);
362 	struct mii_data *mii = GET_MII(sc);
363 	struct ifnet *ifp;
364 	uint16_t val;
365 	int err, locked;
366 
367 	locked = mtx_owned(&sc->sc_mtx);
368 	if (!locked)
369 		AXE_LOCK(sc);
370 
371 	ifp = uether_getifp(&sc->sc_ue);
372 	if (mii == NULL || ifp == NULL ||
373 	    (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
374 		goto done;
375 
376 	sc->sc_flags &= ~AXE_FLAG_LINK;
377 	if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
378 	    (IFM_ACTIVE | IFM_AVALID)) {
379 		switch (IFM_SUBTYPE(mii->mii_media_active)) {
380 		case IFM_10_T:
381 		case IFM_100_TX:
382 			sc->sc_flags |= AXE_FLAG_LINK;
383 			break;
384 		case IFM_1000_T:
385 			if ((sc->sc_flags & AXE_FLAG_178) == 0)
386 				break;
387 			sc->sc_flags |= AXE_FLAG_LINK;
388 			break;
389 		default:
390 			break;
391 		}
392 	}
393 
394 	/* Lost link, do nothing. */
395 	if ((sc->sc_flags & AXE_FLAG_LINK) == 0)
396 		goto done;
397 
398 	val = 0;
399 	if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0)
400 		val |= AXE_MEDIA_FULL_DUPLEX;
401 	if (AXE_IS_178_FAMILY(sc)) {
402 		val |= AXE_178_MEDIA_RX_EN | AXE_178_MEDIA_MAGIC;
403 		if ((sc->sc_flags & AXE_FLAG_178) != 0)
404 			val |= AXE_178_MEDIA_ENCK;
405 		switch (IFM_SUBTYPE(mii->mii_media_active)) {
406 		case IFM_1000_T:
407 			val |= AXE_178_MEDIA_GMII | AXE_178_MEDIA_ENCK;
408 			break;
409 		case IFM_100_TX:
410 			val |= AXE_178_MEDIA_100TX;
411 			break;
412 		case IFM_10_T:
413 			/* doesn't need to be handled */
414 			break;
415 		}
416 	}
417 	err = axe_cmd(sc, AXE_CMD_WRITE_MEDIA, 0, val, NULL);
418 	if (err)
419 		device_printf(dev, "media change failed, error %d\n", err);
420 done:
421 	if (!locked)
422 		AXE_UNLOCK(sc);
423 }
424 
425 /*
426  * Set media options.
427  */
428 static int
429 axe_ifmedia_upd(struct ifnet *ifp)
430 {
431 	struct axe_softc *sc = ifp->if_softc;
432 	struct mii_data *mii = GET_MII(sc);
433 	struct mii_softc *miisc;
434 	int error;
435 
436 	AXE_LOCK_ASSERT(sc, MA_OWNED);
437 
438 	LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
439 		PHY_RESET(miisc);
440 	error = mii_mediachg(mii);
441 	return (error);
442 }
443 
444 /*
445  * Report current media status.
446  */
447 static void
448 axe_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
449 {
450 	struct axe_softc *sc = ifp->if_softc;
451 	struct mii_data *mii = GET_MII(sc);
452 
453 	AXE_LOCK(sc);
454 	mii_pollstat(mii);
455 	AXE_UNLOCK(sc);
456 	ifmr->ifm_active = mii->mii_media_active;
457 	ifmr->ifm_status = mii->mii_media_status;
458 }
459 
460 static void
461 axe_setmulti(struct usb_ether *ue)
462 {
463 	struct axe_softc *sc = uether_getsc(ue);
464 	struct ifnet *ifp = uether_getifp(ue);
465 	struct ifmultiaddr *ifma;
466 	uint32_t h = 0;
467 	uint16_t rxmode;
468 	uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
469 
470 	AXE_LOCK_ASSERT(sc, MA_OWNED);
471 
472 	axe_cmd(sc, AXE_CMD_RXCTL_READ, 0, 0, &rxmode);
473 	rxmode = le16toh(rxmode);
474 
475 	if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
476 		rxmode |= AXE_RXCMD_ALLMULTI;
477 		axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, rxmode, NULL);
478 		return;
479 	}
480 	rxmode &= ~AXE_RXCMD_ALLMULTI;
481 
482 	if_maddr_rlock(ifp);
483 	TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
484 	{
485 		if (ifma->ifma_addr->sa_family != AF_LINK)
486 			continue;
487 		h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
488 		    ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
489 		hashtbl[h / 8] |= 1 << (h % 8);
490 	}
491 	if_maddr_runlock(ifp);
492 
493 	axe_cmd(sc, AXE_CMD_WRITE_MCAST, 0, 0, (void *)&hashtbl);
494 	axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, rxmode, NULL);
495 }
496 
497 static int
498 axe_get_phyno(struct axe_softc *sc, int sel)
499 {
500 	int phyno;
501 
502 	switch (AXE_PHY_TYPE(sc->sc_phyaddrs[sel])) {
503 	case PHY_TYPE_100_HOME:
504 	case PHY_TYPE_GIG:
505 		phyno = AXE_PHY_NO(sc->sc_phyaddrs[sel]);
506 		break;
507 	case PHY_TYPE_SPECIAL:
508 		/* FALLTHROUGH */
509 	case PHY_TYPE_RSVD:
510 		/* FALLTHROUGH */
511 	case PHY_TYPE_NON_SUP:
512 		/* FALLTHROUGH */
513 	default:
514 		phyno = -1;
515 		break;
516 	}
517 
518 	return (phyno);
519 }
520 
521 #define	AXE_GPIO_WRITE(x, y)	do {				\
522 	axe_cmd(sc, AXE_CMD_WRITE_GPIO, 0, (x), NULL);		\
523 	uether_pause(ue, (y));					\
524 } while (0)
525 
526 static void
527 axe_ax88178_init(struct axe_softc *sc)
528 {
529 	struct usb_ether *ue;
530 	int gpio0, ledmode, phymode;
531 	uint16_t eeprom, val;
532 
533 	ue = &sc->sc_ue;
534 	axe_cmd(sc, AXE_CMD_SROM_WR_ENABLE, 0, 0, NULL);
535 	/* XXX magic */
536 	axe_cmd(sc, AXE_CMD_SROM_READ, 0, 0x0017, &eeprom);
537 	eeprom = le16toh(eeprom);
538 	axe_cmd(sc, AXE_CMD_SROM_WR_DISABLE, 0, 0, NULL);
539 
540 	/* if EEPROM is invalid we have to use to GPIO0 */
541 	if (eeprom == 0xffff) {
542 		phymode = AXE_PHY_MODE_MARVELL;
543 		gpio0 = 1;
544 		ledmode = 0;
545 	} else {
546 		phymode = eeprom & 0x7f;
547 		gpio0 = (eeprom & 0x80) ? 0 : 1;
548 		ledmode = eeprom >> 8;
549 	}
550 
551 	if (bootverbose)
552 		device_printf(sc->sc_ue.ue_dev,
553 		    "EEPROM data : 0x%04x, phymode : 0x%02x\n", eeprom,
554 		    phymode);
555 	/* Program GPIOs depending on PHY hardware. */
556 	switch (phymode) {
557 	case AXE_PHY_MODE_MARVELL:
558 		if (gpio0 == 1) {
559 			AXE_GPIO_WRITE(AXE_GPIO_RELOAD_EEPROM | AXE_GPIO0_EN,
560 			    hz / 32);
561 			AXE_GPIO_WRITE(AXE_GPIO0_EN | AXE_GPIO2 | AXE_GPIO2_EN,
562 			    hz / 32);
563 			AXE_GPIO_WRITE(AXE_GPIO0_EN | AXE_GPIO2_EN, hz / 4);
564 			AXE_GPIO_WRITE(AXE_GPIO0_EN | AXE_GPIO2 | AXE_GPIO2_EN,
565 			    hz / 32);
566 		} else {
567 			AXE_GPIO_WRITE(AXE_GPIO_RELOAD_EEPROM | AXE_GPIO1 |
568 			    AXE_GPIO1_EN, hz / 3);
569 			if (ledmode == 1) {
570 				AXE_GPIO_WRITE(AXE_GPIO1_EN, hz / 3);
571 				AXE_GPIO_WRITE(AXE_GPIO1 | AXE_GPIO1_EN,
572 				    hz / 3);
573 			} else {
574 				AXE_GPIO_WRITE(AXE_GPIO1 | AXE_GPIO1_EN |
575 				    AXE_GPIO2 | AXE_GPIO2_EN, hz / 32);
576 				AXE_GPIO_WRITE(AXE_GPIO1 | AXE_GPIO1_EN |
577 				    AXE_GPIO2_EN, hz / 4);
578 				AXE_GPIO_WRITE(AXE_GPIO1 | AXE_GPIO1_EN |
579 				    AXE_GPIO2 | AXE_GPIO2_EN, hz / 32);
580 			}
581 		}
582 		break;
583 	case AXE_PHY_MODE_CICADA:
584 	case AXE_PHY_MODE_CICADA_V2:
585 	case AXE_PHY_MODE_CICADA_V2_ASIX:
586 		if (gpio0 == 1)
587 			AXE_GPIO_WRITE(AXE_GPIO_RELOAD_EEPROM | AXE_GPIO0 |
588 			    AXE_GPIO0_EN, hz / 32);
589 		else
590 			AXE_GPIO_WRITE(AXE_GPIO_RELOAD_EEPROM | AXE_GPIO1 |
591 			    AXE_GPIO1_EN, hz / 32);
592 		break;
593 	case AXE_PHY_MODE_AGERE:
594 		AXE_GPIO_WRITE(AXE_GPIO_RELOAD_EEPROM | AXE_GPIO1 |
595 		    AXE_GPIO1_EN, hz / 32);
596 		AXE_GPIO_WRITE(AXE_GPIO1 | AXE_GPIO1_EN | AXE_GPIO2 |
597 		    AXE_GPIO2_EN, hz / 32);
598 		AXE_GPIO_WRITE(AXE_GPIO1 | AXE_GPIO1_EN | AXE_GPIO2_EN, hz / 4);
599 		AXE_GPIO_WRITE(AXE_GPIO1 | AXE_GPIO1_EN | AXE_GPIO2 |
600 		    AXE_GPIO2_EN, hz / 32);
601 		break;
602 	case AXE_PHY_MODE_REALTEK_8211CL:
603 	case AXE_PHY_MODE_REALTEK_8211BN:
604 	case AXE_PHY_MODE_REALTEK_8251CL:
605 		val = gpio0 == 1 ? AXE_GPIO0 | AXE_GPIO0_EN :
606 		    AXE_GPIO1 | AXE_GPIO1_EN;
607 		AXE_GPIO_WRITE(val, hz / 32);
608 		AXE_GPIO_WRITE(val | AXE_GPIO2 | AXE_GPIO2_EN, hz / 32);
609 		AXE_GPIO_WRITE(val | AXE_GPIO2_EN, hz / 4);
610 		AXE_GPIO_WRITE(val | AXE_GPIO2 | AXE_GPIO2_EN, hz / 32);
611 		if (phymode == AXE_PHY_MODE_REALTEK_8211CL) {
612 			axe_miibus_writereg(ue->ue_dev, sc->sc_phyno,
613 			    0x1F, 0x0005);
614 			axe_miibus_writereg(ue->ue_dev, sc->sc_phyno,
615 			    0x0C, 0x0000);
616 			val = axe_miibus_readreg(ue->ue_dev, sc->sc_phyno,
617 			    0x0001);
618 			axe_miibus_writereg(ue->ue_dev, sc->sc_phyno,
619 			    0x01, val | 0x0080);
620 			axe_miibus_writereg(ue->ue_dev, sc->sc_phyno,
621 			    0x1F, 0x0000);
622 		}
623 		break;
624 	default:
625 		/* Unknown PHY model or no need to program GPIOs. */
626 		break;
627 	}
628 
629 	/* soft reset */
630 	axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0, AXE_SW_RESET_CLEAR, NULL);
631 	uether_pause(ue, hz / 4);
632 
633 	axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0,
634 	    AXE_SW_RESET_PRL | AXE_178_RESET_MAGIC, NULL);
635 	uether_pause(ue, hz / 4);
636 	/* Enable MII/GMII/RGMII interface to work with external PHY. */
637 	axe_cmd(sc, AXE_CMD_SW_PHY_SELECT, 0, 0, NULL);
638 	uether_pause(ue, hz / 4);
639 
640 	axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, 0, NULL);
641 }
642 
643 static void
644 axe_ax88772_init(struct axe_softc *sc)
645 {
646 	axe_cmd(sc, AXE_CMD_WRITE_GPIO, 0, 0x00b0, NULL);
647 	uether_pause(&sc->sc_ue, hz / 16);
648 
649 	if (sc->sc_phyno == AXE_772_PHY_NO_EPHY) {
650 		/* ask for the embedded PHY */
651 		axe_cmd(sc, AXE_CMD_SW_PHY_SELECT, 0, 0x01, NULL);
652 		uether_pause(&sc->sc_ue, hz / 64);
653 
654 		/* power down and reset state, pin reset state */
655 		axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0,
656 		    AXE_SW_RESET_CLEAR, NULL);
657 		uether_pause(&sc->sc_ue, hz / 16);
658 
659 		/* power down/reset state, pin operating state */
660 		axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0,
661 		    AXE_SW_RESET_IPPD | AXE_SW_RESET_PRL, NULL);
662 		uether_pause(&sc->sc_ue, hz / 4);
663 
664 		/* power up, reset */
665 		axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0, AXE_SW_RESET_PRL, NULL);
666 
667 		/* power up, operating */
668 		axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0,
669 		    AXE_SW_RESET_IPRL | AXE_SW_RESET_PRL, NULL);
670 	} else {
671 		/* ask for external PHY */
672 		axe_cmd(sc, AXE_CMD_SW_PHY_SELECT, 0, 0x00, NULL);
673 		uether_pause(&sc->sc_ue, hz / 64);
674 
675 		/* power down internal PHY */
676 		axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0,
677 		    AXE_SW_RESET_IPPD | AXE_SW_RESET_PRL, NULL);
678 	}
679 
680 	uether_pause(&sc->sc_ue, hz / 4);
681 	axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, 0, NULL);
682 }
683 
684 static void
685 axe_ax88772_phywake(struct axe_softc *sc)
686 {
687 	struct usb_ether *ue;
688 
689 	ue = &sc->sc_ue;
690 	if (sc->sc_phyno == AXE_772_PHY_NO_EPHY) {
691 		/* Manually select internal(embedded) PHY - MAC mode. */
692 		axe_cmd(sc, AXE_CMD_SW_PHY_SELECT, 0, AXE_SW_PHY_SELECT_SS_ENB |
693 		    AXE_SW_PHY_SELECT_EMBEDDED | AXE_SW_PHY_SELECT_SS_MII,
694 		    NULL);
695 		uether_pause(&sc->sc_ue, hz / 32);
696 	} else {
697 		/*
698 		 * Manually select external PHY - MAC mode.
699 		 * Reverse MII/RMII is for AX88772A PHY mode.
700 		 */
701 		axe_cmd(sc, AXE_CMD_SW_PHY_SELECT, 0, AXE_SW_PHY_SELECT_SS_ENB |
702 		    AXE_SW_PHY_SELECT_EXT | AXE_SW_PHY_SELECT_SS_MII, NULL);
703 		uether_pause(&sc->sc_ue, hz / 32);
704 	}
705 	/* Take PHY out of power down. */
706 	axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0, AXE_SW_RESET_IPPD |
707 	    AXE_SW_RESET_IPRL, NULL);
708 	uether_pause(&sc->sc_ue, hz / 4);
709 	axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0, AXE_SW_RESET_IPRL, NULL);
710 	uether_pause(&sc->sc_ue, hz);
711 	axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0, AXE_SW_RESET_CLEAR, NULL);
712 	uether_pause(&sc->sc_ue, hz / 32);
713 	axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0, AXE_SW_RESET_IPRL, NULL);
714 	uether_pause(&sc->sc_ue, hz / 32);
715 }
716 
717 static void
718 axe_ax88772a_init(struct axe_softc *sc)
719 {
720 	struct usb_ether *ue;
721 
722 	ue = &sc->sc_ue;
723 	/* Reload EEPROM. */
724 	AXE_GPIO_WRITE(AXE_GPIO_RELOAD_EEPROM, hz / 32);
725 	axe_ax88772_phywake(sc);
726 	/* Stop MAC. */
727 	axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, 0, NULL);
728 }
729 
730 static void
731 axe_ax88772b_init(struct axe_softc *sc)
732 {
733 	struct usb_ether *ue;
734 	uint16_t eeprom;
735 	uint8_t *eaddr;
736 	int i;
737 
738 	ue = &sc->sc_ue;
739 	/* Reload EEPROM. */
740 	AXE_GPIO_WRITE(AXE_GPIO_RELOAD_EEPROM, hz / 32);
741 	/*
742 	 * Save PHY power saving configuration(high byte) and
743 	 * clear EEPROM checksum value(low byte).
744 	 */
745 	axe_cmd(sc, AXE_CMD_SROM_READ, 0, AXE_EEPROM_772B_PHY_PWRCFG, &eeprom);
746 	sc->sc_pwrcfg = le16toh(eeprom) & 0xFF00;
747 
748 	/*
749 	 * Auto-loaded default station address from internal ROM is
750 	 * 00:00:00:00:00:00 such that an explicit access to EEPROM
751 	 * is required to get real station address.
752 	 */
753 	eaddr = ue->ue_eaddr;
754 	for (i = 0; i < ETHER_ADDR_LEN / 2; i++) {
755 		axe_cmd(sc, AXE_CMD_SROM_READ, 0, AXE_EEPROM_772B_NODE_ID + i,
756 		    &eeprom);
757 		eeprom = le16toh(eeprom);
758 		*eaddr++ = (uint8_t)(eeprom & 0xFF);
759 		*eaddr++ = (uint8_t)((eeprom >> 8) & 0xFF);
760 	}
761 	/* Wakeup PHY. */
762 	axe_ax88772_phywake(sc);
763 	/* Stop MAC. */
764 	axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, 0, NULL);
765 }
766 
767 #undef	AXE_GPIO_WRITE
768 
769 static void
770 axe_reset(struct axe_softc *sc)
771 {
772 	struct usb_config_descriptor *cd;
773 	usb_error_t err;
774 
775 	cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev);
776 
777 	err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx,
778 	    cd->bConfigurationValue);
779 	if (err)
780 		DPRINTF("reset failed (ignored)\n");
781 
782 	/* Wait a little while for the chip to get its brains in order. */
783 	uether_pause(&sc->sc_ue, hz / 100);
784 
785 	/* Reinitialize controller to achieve full reset. */
786 	if (sc->sc_flags & AXE_FLAG_178)
787 		axe_ax88178_init(sc);
788 	else if (sc->sc_flags & AXE_FLAG_772)
789 		axe_ax88772_init(sc);
790 	else if (sc->sc_flags & AXE_FLAG_772A)
791 		axe_ax88772a_init(sc);
792 	else if (sc->sc_flags & AXE_FLAG_772B)
793 		axe_ax88772b_init(sc);
794 }
795 
796 static void
797 axe_attach_post(struct usb_ether *ue)
798 {
799 	struct axe_softc *sc = uether_getsc(ue);
800 
801 	/*
802 	 * Load PHY indexes first. Needed by axe_xxx_init().
803 	 */
804 	axe_cmd(sc, AXE_CMD_READ_PHYID, 0, 0, sc->sc_phyaddrs);
805 	if (bootverbose)
806 		device_printf(sc->sc_ue.ue_dev, "PHYADDR 0x%02x:0x%02x\n",
807 		    sc->sc_phyaddrs[0], sc->sc_phyaddrs[1]);
808 	sc->sc_phyno = axe_get_phyno(sc, AXE_PHY_SEL_PRI);
809 	if (sc->sc_phyno == -1)
810 		sc->sc_phyno = axe_get_phyno(sc, AXE_PHY_SEL_SEC);
811 	if (sc->sc_phyno == -1) {
812 		device_printf(sc->sc_ue.ue_dev,
813 		    "no valid PHY address found, assuming PHY address 0\n");
814 		sc->sc_phyno = 0;
815 	}
816 
817 	/* Initialize controller and get station address. */
818 	if (sc->sc_flags & AXE_FLAG_178) {
819 		axe_ax88178_init(sc);
820 		sc->sc_tx_bufsz = 16 * 1024;
821 		axe_cmd(sc, AXE_178_CMD_READ_NODEID, 0, 0, ue->ue_eaddr);
822 	} else if (sc->sc_flags & AXE_FLAG_772) {
823 		axe_ax88772_init(sc);
824 		sc->sc_tx_bufsz = 8 * 1024;
825 		axe_cmd(sc, AXE_178_CMD_READ_NODEID, 0, 0, ue->ue_eaddr);
826 	} else if (sc->sc_flags & AXE_FLAG_772A) {
827 		axe_ax88772a_init(sc);
828 		sc->sc_tx_bufsz = 8 * 1024;
829 		axe_cmd(sc, AXE_178_CMD_READ_NODEID, 0, 0, ue->ue_eaddr);
830 	} else if (sc->sc_flags & AXE_FLAG_772B) {
831 		axe_ax88772b_init(sc);
832 		sc->sc_tx_bufsz = 8 * 1024;
833 	} else
834 		axe_cmd(sc, AXE_172_CMD_READ_NODEID, 0, 0, ue->ue_eaddr);
835 
836 	/*
837 	 * Fetch IPG values.
838 	 */
839 	if (sc->sc_flags & (AXE_FLAG_772A | AXE_FLAG_772B)) {
840 		/* Set IPG values. */
841 		sc->sc_ipgs[0] = 0x15;
842 		sc->sc_ipgs[1] = 0x16;
843 		sc->sc_ipgs[2] = 0x1A;
844 	} else
845 		axe_cmd(sc, AXE_CMD_READ_IPG012, 0, 0, sc->sc_ipgs);
846 }
847 
848 /*
849  * Probe for a AX88172 chip.
850  */
851 static int
852 axe_probe(device_t dev)
853 {
854 	struct usb_attach_arg *uaa = device_get_ivars(dev);
855 
856 	if (uaa->usb_mode != USB_MODE_HOST)
857 		return (ENXIO);
858 	if (uaa->info.bConfigIndex != AXE_CONFIG_IDX)
859 		return (ENXIO);
860 	if (uaa->info.bIfaceIndex != AXE_IFACE_IDX)
861 		return (ENXIO);
862 
863 	return (usbd_lookup_id_by_uaa(axe_devs, sizeof(axe_devs), uaa));
864 }
865 
866 /*
867  * Attach the interface. Allocate softc structures, do ifmedia
868  * setup and ethernet/BPF attach.
869  */
870 static int
871 axe_attach(device_t dev)
872 {
873 	struct usb_attach_arg *uaa = device_get_ivars(dev);
874 	struct axe_softc *sc = device_get_softc(dev);
875 	struct usb_ether *ue = &sc->sc_ue;
876 	uint8_t iface_index;
877 	int error;
878 
879 	sc->sc_flags = USB_GET_DRIVER_INFO(uaa);
880 
881 	device_set_usb_desc(dev);
882 
883 	mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
884 
885 	iface_index = AXE_IFACE_IDX;
886 	error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
887 	    axe_config, AXE_N_TRANSFER, sc, &sc->sc_mtx);
888 	if (error) {
889 		device_printf(dev, "allocating USB transfers failed\n");
890 		goto detach;
891 	}
892 
893 	ue->ue_sc = sc;
894 	ue->ue_dev = dev;
895 	ue->ue_udev = uaa->device;
896 	ue->ue_mtx = &sc->sc_mtx;
897 	ue->ue_methods = &axe_ue_methods;
898 
899 	error = uether_ifattach(ue);
900 	if (error) {
901 		device_printf(dev, "could not attach interface\n");
902 		goto detach;
903 	}
904 	return (0);			/* success */
905 
906 detach:
907 	axe_detach(dev);
908 	return (ENXIO);			/* failure */
909 }
910 
911 static int
912 axe_detach(device_t dev)
913 {
914 	struct axe_softc *sc = device_get_softc(dev);
915 	struct usb_ether *ue = &sc->sc_ue;
916 
917 	usbd_transfer_unsetup(sc->sc_xfer, AXE_N_TRANSFER);
918 	uether_ifdetach(ue);
919 	mtx_destroy(&sc->sc_mtx);
920 
921 	return (0);
922 }
923 
924 #if (AXE_BULK_BUF_SIZE >= 0x10000)
925 #error "Please update axe_bulk_read_callback()!"
926 #endif
927 
928 static void
929 axe_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
930 {
931 	struct axe_softc *sc = usbd_xfer_softc(xfer);
932 	struct usb_ether *ue = &sc->sc_ue;
933 	struct ifnet *ifp = uether_getifp(ue);
934 	struct axe_sframe_hdr hdr;
935 	struct usb_page_cache *pc;
936 	int err, pos, len;
937 	int actlen;
938 
939 	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
940 
941 	switch (USB_GET_STATE(xfer)) {
942 	case USB_ST_TRANSFERRED:
943 		pos = 0;
944 		len = 0;
945 		err = 0;
946 
947 		pc = usbd_xfer_get_frame(xfer, 0);
948 		if (AXE_IS_178_FAMILY(sc)) {
949 			while (pos < actlen) {
950 				if ((pos + sizeof(hdr)) > actlen) {
951 					/* too little data */
952 					err = EINVAL;
953 					break;
954 				}
955 				usbd_copy_out(pc, pos, &hdr, sizeof(hdr));
956 
957 				if ((hdr.len ^ hdr.ilen) != 0xFFFF) {
958 					/* we lost sync */
959 					err = EINVAL;
960 					break;
961 				}
962 				pos += sizeof(hdr);
963 
964 				len = le16toh(hdr.len);
965 				if ((pos + len) > actlen) {
966 					/* invalid length */
967 					err = EINVAL;
968 					break;
969 				}
970 				uether_rxbuf(ue, pc, pos, len);
971 
972 				pos += len + (len % 2);
973 			}
974 		} else
975 			uether_rxbuf(ue, pc, 0, actlen);
976 
977 		if (err != 0)
978 			ifp->if_ierrors++;
979 
980 		/* FALLTHROUGH */
981 	case USB_ST_SETUP:
982 tr_setup:
983 		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
984 		usbd_transfer_submit(xfer);
985 		uether_rxflush(ue);
986 		return;
987 
988 	default:			/* Error */
989 		DPRINTF("bulk read error, %s\n", usbd_errstr(error));
990 
991 		if (error != USB_ERR_CANCELLED) {
992 			/* try to clear stall first */
993 			usbd_xfer_set_stall(xfer);
994 			goto tr_setup;
995 		}
996 		return;
997 
998 	}
999 }
1000 
1001 #if ((AXE_BULK_BUF_SIZE >= 0x10000) || (AXE_BULK_BUF_SIZE < (MCLBYTES+4)))
1002 #error "Please update axe_bulk_write_callback()!"
1003 #endif
1004 
1005 static void
1006 axe_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
1007 {
1008 	struct axe_softc *sc = usbd_xfer_softc(xfer);
1009 	struct axe_sframe_hdr hdr;
1010 	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
1011 	struct usb_page_cache *pc;
1012 	struct mbuf *m;
1013 	int nframes, pos;
1014 
1015 	switch (USB_GET_STATE(xfer)) {
1016 	case USB_ST_TRANSFERRED:
1017 		DPRINTFN(11, "transfer complete\n");
1018 		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1019 		/* FALLTHROUGH */
1020 	case USB_ST_SETUP:
1021 tr_setup:
1022 		if ((sc->sc_flags & AXE_FLAG_LINK) == 0 ||
1023 		    (ifp->if_drv_flags & IFF_DRV_OACTIVE) != 0) {
1024 			/*
1025 			 * Don't send anything if there is no link or
1026 			 * controller is busy.
1027 			 */
1028 			return;
1029 		}
1030 
1031 		for (nframes = 0; nframes < 16 &&
1032 		    !IFQ_DRV_IS_EMPTY(&ifp->if_snd); nframes++) {
1033 			IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1034 			if (m == NULL)
1035 				break;
1036 			usbd_xfer_set_frame_offset(xfer, nframes * MCLBYTES,
1037 			    nframes);
1038 			pos = 0;
1039 			pc = usbd_xfer_get_frame(xfer, nframes);
1040 			if (AXE_IS_178_FAMILY(sc)) {
1041 				hdr.len = htole16(m->m_pkthdr.len);
1042 				hdr.ilen = ~hdr.len;
1043 				usbd_copy_in(pc, pos, &hdr, sizeof(hdr));
1044 				pos += sizeof(hdr);
1045 				usbd_m_copy_in(pc, pos, m, 0, m->m_pkthdr.len);
1046 				pos += m->m_pkthdr.len;
1047 				if ((pos % 512) == 0) {
1048 					hdr.len = 0;
1049 					hdr.ilen = 0xffff;
1050 					usbd_copy_in(pc, pos, &hdr,
1051 					    sizeof(hdr));
1052 					pos += sizeof(hdr);
1053 				}
1054 			} else {
1055 				usbd_m_copy_in(pc, pos, m, 0, m->m_pkthdr.len);
1056 				pos += m->m_pkthdr.len;
1057 			}
1058 
1059 			/*
1060 			 * XXX
1061 			 * Update TX packet counter here. This is not
1062 			 * correct way but it seems that there is no way
1063 			 * to know how many packets are sent at the end
1064 			 * of transfer because controller combines
1065 			 * multiple writes into single one if there is
1066 			 * room in TX buffer of controller.
1067 			 */
1068 			ifp->if_opackets++;
1069 
1070 			/*
1071 			 * if there's a BPF listener, bounce a copy
1072 			 * of this frame to him:
1073 			 */
1074 			BPF_MTAP(ifp, m);
1075 
1076 			m_freem(m);
1077 
1078 			/* Set frame length. */
1079 			usbd_xfer_set_frame_len(xfer, nframes, pos);
1080 		}
1081 		if (nframes != 0) {
1082 			usbd_xfer_set_frames(xfer, nframes);
1083 			usbd_transfer_submit(xfer);
1084 			ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1085 		}
1086 		return;
1087 		/* NOTREACHED */
1088 	default:			/* Error */
1089 		DPRINTFN(11, "transfer error, %s\n",
1090 		    usbd_errstr(error));
1091 
1092 		ifp->if_oerrors++;
1093 		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1094 
1095 		if (error != USB_ERR_CANCELLED) {
1096 			/* try to clear stall first */
1097 			usbd_xfer_set_stall(xfer);
1098 			goto tr_setup;
1099 		}
1100 		return;
1101 
1102 	}
1103 }
1104 
1105 static void
1106 axe_tick(struct usb_ether *ue)
1107 {
1108 	struct axe_softc *sc = uether_getsc(ue);
1109 	struct mii_data *mii = GET_MII(sc);
1110 
1111 	AXE_LOCK_ASSERT(sc, MA_OWNED);
1112 
1113 	mii_tick(mii);
1114 	if ((sc->sc_flags & AXE_FLAG_LINK) == 0) {
1115 		axe_miibus_statchg(ue->ue_dev);
1116 		if ((sc->sc_flags & AXE_FLAG_LINK) != 0)
1117 			axe_start(ue);
1118 	}
1119 }
1120 
1121 static void
1122 axe_start(struct usb_ether *ue)
1123 {
1124 	struct axe_softc *sc = uether_getsc(ue);
1125 
1126 	/*
1127 	 * start the USB transfers, if not already started:
1128 	 */
1129 	usbd_transfer_start(sc->sc_xfer[AXE_BULK_DT_RD]);
1130 	usbd_transfer_start(sc->sc_xfer[AXE_BULK_DT_WR]);
1131 }
1132 
1133 static void
1134 axe_init(struct usb_ether *ue)
1135 {
1136 	struct axe_softc *sc = uether_getsc(ue);
1137 	struct ifnet *ifp = uether_getifp(ue);
1138 	uint16_t rxmode;
1139 
1140 	AXE_LOCK_ASSERT(sc, MA_OWNED);
1141 
1142 	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
1143 		return;
1144 
1145 	/* Cancel pending I/O */
1146 	axe_stop(ue);
1147 
1148 	axe_reset(sc);
1149 
1150 	/* Set MAC address. */
1151 	if (AXE_IS_178_FAMILY(sc))
1152 		axe_cmd(sc, AXE_178_CMD_WRITE_NODEID, 0, 0, IF_LLADDR(ifp));
1153 	else
1154 		axe_cmd(sc, AXE_172_CMD_WRITE_NODEID, 0, 0, IF_LLADDR(ifp));
1155 
1156 	/* Set transmitter IPG values */
1157 	if (AXE_IS_178_FAMILY(sc))
1158 		axe_cmd(sc, AXE_178_CMD_WRITE_IPG012, sc->sc_ipgs[2],
1159 		    (sc->sc_ipgs[1] << 8) | (sc->sc_ipgs[0]), NULL);
1160 	else {
1161 		axe_cmd(sc, AXE_172_CMD_WRITE_IPG0, 0, sc->sc_ipgs[0], NULL);
1162 		axe_cmd(sc, AXE_172_CMD_WRITE_IPG1, 0, sc->sc_ipgs[1], NULL);
1163 		axe_cmd(sc, AXE_172_CMD_WRITE_IPG2, 0, sc->sc_ipgs[2], NULL);
1164 	}
1165 
1166 	/* AX88772B uses different maximum frame burst configuration. */
1167 	if (sc->sc_flags & AXE_FLAG_772B)
1168 		axe_cmd(sc, AXE_772B_CMD_RXCTL_WRITE_CFG,
1169 		    ax88772b_mfb_table[AX88772B_MFB_16K].threshold,
1170 		    ax88772b_mfb_table[AX88772B_MFB_16K].byte_cnt, NULL);
1171 
1172 	/* Enable receiver, set RX mode. */
1173 	rxmode = (AXE_RXCMD_MULTICAST | AXE_RXCMD_ENABLE);
1174 	if (AXE_IS_178_FAMILY(sc)) {
1175 		if (sc->sc_flags & AXE_FLAG_772B) {
1176 			/*
1177 			 * Select RX header format type 1.  Aligning IP
1178 			 * header on 4 byte boundary is not needed
1179 			 * because we always copy the received frame in
1180 			 * RX handler.
1181 			 */
1182 			rxmode |= AXE_772B_RXCMD_HDR_TYPE_1;
1183 		} else {
1184 			/*
1185 			 * Default Rx buffer size is too small to get
1186 			 * maximum performance.
1187 			 */
1188 			rxmode |= AXE_178_RXCMD_MFB_16384;
1189 		}
1190 	} else {
1191 		rxmode |= AXE_172_RXCMD_UNICAST;
1192 	}
1193 
1194 	/* If we want promiscuous mode, set the allframes bit. */
1195 	if (ifp->if_flags & IFF_PROMISC)
1196 		rxmode |= AXE_RXCMD_PROMISC;
1197 
1198 	if (ifp->if_flags & IFF_BROADCAST)
1199 		rxmode |= AXE_RXCMD_BROADCAST;
1200 
1201 	axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, rxmode, NULL);
1202 
1203 	/* Load the multicast filter. */
1204 	axe_setmulti(ue);
1205 
1206 	usbd_xfer_set_stall(sc->sc_xfer[AXE_BULK_DT_WR]);
1207 
1208 	ifp->if_drv_flags |= IFF_DRV_RUNNING;
1209 	/* Switch to selected media. */
1210 	axe_ifmedia_upd(ifp);
1211 	axe_start(ue);
1212 }
1213 
1214 static void
1215 axe_setpromisc(struct usb_ether *ue)
1216 {
1217 	struct axe_softc *sc = uether_getsc(ue);
1218 	struct ifnet *ifp = uether_getifp(ue);
1219 	uint16_t rxmode;
1220 
1221 	axe_cmd(sc, AXE_CMD_RXCTL_READ, 0, 0, &rxmode);
1222 
1223 	rxmode = le16toh(rxmode);
1224 
1225 	if (ifp->if_flags & IFF_PROMISC) {
1226 		rxmode |= AXE_RXCMD_PROMISC;
1227 	} else {
1228 		rxmode &= ~AXE_RXCMD_PROMISC;
1229 	}
1230 
1231 	axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, rxmode, NULL);
1232 
1233 	axe_setmulti(ue);
1234 }
1235 
1236 static void
1237 axe_stop(struct usb_ether *ue)
1238 {
1239 	struct axe_softc *sc = uether_getsc(ue);
1240 	struct ifnet *ifp = uether_getifp(ue);
1241 
1242 	AXE_LOCK_ASSERT(sc, MA_OWNED);
1243 
1244 	ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1245 	sc->sc_flags &= ~AXE_FLAG_LINK;
1246 
1247 	/*
1248 	 * stop all the transfers, if not already stopped:
1249 	 */
1250 	usbd_transfer_stop(sc->sc_xfer[AXE_BULK_DT_WR]);
1251 	usbd_transfer_stop(sc->sc_xfer[AXE_BULK_DT_RD]);
1252 }
1253