xref: /freebsd/sys/dev/usb/net/if_ure.c (revision 396c556d77189a5c474d35cec6f44a762e310b7d)
1 /*-
2  * Copyright (c) 2015-2016 Kevin Lo <kevlo@FreeBSD.org>
3  * 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  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/bus.h>
33 #include <sys/condvar.h>
34 #include <sys/kernel.h>
35 #include <sys/lock.h>
36 #include <sys/module.h>
37 #include <sys/mutex.h>
38 #include <sys/socket.h>
39 #include <sys/sysctl.h>
40 #include <sys/unistd.h>
41 
42 #include <net/if.h>
43 #include <net/if_var.h>
44 
45 #include <dev/usb/usb.h>
46 #include <dev/usb/usbdi.h>
47 #include <dev/usb/usbdi_util.h>
48 #include "usbdevs.h"
49 
50 #define USB_DEBUG_VAR	ure_debug
51 #include <dev/usb/usb_debug.h>
52 #include <dev/usb/usb_process.h>
53 
54 #include <dev/usb/net/usb_ethernet.h>
55 #include <dev/usb/net/if_urereg.h>
56 
57 #ifdef USB_DEBUG
58 static int ure_debug = 0;
59 
60 static SYSCTL_NODE(_hw_usb, OID_AUTO, ure, CTLFLAG_RW, 0, "USB ure");
61 SYSCTL_INT(_hw_usb_ure, OID_AUTO, debug, CTLFLAG_RWTUN, &ure_debug, 0,
62     "Debug level");
63 #endif
64 
65 /*
66  * Various supported device vendors/products.
67  */
68 static const STRUCT_USB_HOST_ID ure_devs[] = {
69 #define	URE_DEV(v,p,i)	{ USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) }
70 	URE_DEV(LENOVO, RTL8153, 0),
71 	URE_DEV(REALTEK, RTL8152, URE_FLAG_8152),
72 	URE_DEV(REALTEK, RTL8153, 0),
73 	URE_DEV(TPLINK, RTL8153, 0),
74 #undef URE_DEV
75 };
76 
77 static device_probe_t ure_probe;
78 static device_attach_t ure_attach;
79 static device_detach_t ure_detach;
80 
81 static usb_callback_t ure_bulk_read_callback;
82 static usb_callback_t ure_bulk_write_callback;
83 
84 static miibus_readreg_t ure_miibus_readreg;
85 static miibus_writereg_t ure_miibus_writereg;
86 static miibus_statchg_t ure_miibus_statchg;
87 
88 static uether_fn_t ure_attach_post;
89 static uether_fn_t ure_init;
90 static uether_fn_t ure_stop;
91 static uether_fn_t ure_start;
92 static uether_fn_t ure_tick;
93 static uether_fn_t ure_rxfilter;
94 
95 static int	ure_ctl(struct ure_softc *, uint8_t, uint16_t, uint16_t,
96 		    void *, int);
97 static int	ure_read_mem(struct ure_softc *, uint16_t, uint16_t, void *,
98 		    int);
99 static int	ure_write_mem(struct ure_softc *, uint16_t, uint16_t, void *,
100 		    int);
101 static uint8_t	ure_read_1(struct ure_softc *, uint16_t, uint16_t);
102 static uint16_t	ure_read_2(struct ure_softc *, uint16_t, uint16_t);
103 static uint32_t	ure_read_4(struct ure_softc *, uint16_t, uint16_t);
104 static int	ure_write_1(struct ure_softc *, uint16_t, uint16_t, uint32_t);
105 static int	ure_write_2(struct ure_softc *, uint16_t, uint16_t, uint32_t);
106 static int	ure_write_4(struct ure_softc *, uint16_t, uint16_t, uint32_t);
107 static uint16_t	ure_ocp_reg_read(struct ure_softc *, uint16_t);
108 static void	ure_ocp_reg_write(struct ure_softc *, uint16_t, uint16_t);
109 
110 static void	ure_read_chipver(struct ure_softc *);
111 static int	ure_attach_post_sub(struct usb_ether *);
112 static void	ure_reset(struct ure_softc *);
113 static int	ure_ifmedia_upd(struct ifnet *);
114 static void	ure_ifmedia_sts(struct ifnet *, struct ifmediareq *);
115 static int	ure_ioctl(struct ifnet *, u_long, caddr_t);
116 static void	ure_rtl8152_init(struct ure_softc *);
117 static void	ure_rtl8153_init(struct ure_softc *);
118 static void	ure_disable_teredo(struct ure_softc *);
119 static void	ure_init_fifo(struct ure_softc *);
120 
121 static const struct usb_config ure_config[URE_N_TRANSFER] = {
122 	[URE_BULK_DT_WR] = {
123 		.type = UE_BULK,
124 		.endpoint = UE_ADDR_ANY,
125 		.direction = UE_DIR_OUT,
126 		.bufsize = MCLBYTES,
127 		.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
128 		.callback = ure_bulk_write_callback,
129 		.timeout = 10000,	/* 10 seconds */
130 	},
131 	[URE_BULK_DT_RD] = {
132 		.type = UE_BULK,
133 		.endpoint = UE_ADDR_ANY,
134 		.direction = UE_DIR_IN,
135 		.bufsize = 16384,
136 		.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
137 		.callback = ure_bulk_read_callback,
138 		.timeout = 0,	/* no timeout */
139 	},
140 };
141 
142 static device_method_t ure_methods[] = {
143 	/* Device interface. */
144 	DEVMETHOD(device_probe, ure_probe),
145 	DEVMETHOD(device_attach, ure_attach),
146 	DEVMETHOD(device_detach, ure_detach),
147 
148 	/* MII interface. */
149 	DEVMETHOD(miibus_readreg, ure_miibus_readreg),
150 	DEVMETHOD(miibus_writereg, ure_miibus_writereg),
151 	DEVMETHOD(miibus_statchg, ure_miibus_statchg),
152 
153 	DEVMETHOD_END
154 };
155 
156 static driver_t ure_driver = {
157 	.name = "ure",
158 	.methods = ure_methods,
159 	.size = sizeof(struct ure_softc),
160 };
161 
162 static devclass_t ure_devclass;
163 
164 DRIVER_MODULE(ure, uhub, ure_driver, ure_devclass, NULL, NULL);
165 DRIVER_MODULE(miibus, ure, miibus_driver, miibus_devclass, NULL, NULL);
166 MODULE_DEPEND(ure, uether, 1, 1, 1);
167 MODULE_DEPEND(ure, usb, 1, 1, 1);
168 MODULE_DEPEND(ure, ether, 1, 1, 1);
169 MODULE_DEPEND(ure, miibus, 1, 1, 1);
170 MODULE_VERSION(ure, 1);
171 
172 static const struct usb_ether_methods ure_ue_methods = {
173 	.ue_attach_post = ure_attach_post,
174 	.ue_attach_post_sub = ure_attach_post_sub,
175 	.ue_start = ure_start,
176 	.ue_init = ure_init,
177 	.ue_stop = ure_stop,
178 	.ue_tick = ure_tick,
179 	.ue_setmulti = ure_rxfilter,
180 	.ue_setpromisc = ure_rxfilter,
181 	.ue_mii_upd = ure_ifmedia_upd,
182 	.ue_mii_sts = ure_ifmedia_sts,
183 };
184 
185 static int
186 ure_ctl(struct ure_softc *sc, uint8_t rw, uint16_t val, uint16_t index,
187     void *buf, int len)
188 {
189 	struct usb_device_request req;
190 
191 	URE_LOCK_ASSERT(sc, MA_OWNED);
192 
193 	if (rw == URE_CTL_WRITE)
194 		req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
195 	else
196 		req.bmRequestType = UT_READ_VENDOR_DEVICE;
197 	req.bRequest = UR_SET_ADDRESS;
198 	USETW(req.wValue, val);
199 	USETW(req.wIndex, index);
200 	USETW(req.wLength, len);
201 
202 	return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
203 }
204 
205 static int
206 ure_read_mem(struct ure_softc *sc, uint16_t addr, uint16_t index,
207     void *buf, int len)
208 {
209 
210 	return (ure_ctl(sc, URE_CTL_READ, addr, index, buf, len));
211 }
212 
213 static int
214 ure_write_mem(struct ure_softc *sc, uint16_t addr, uint16_t index,
215     void *buf, int len)
216 {
217 
218 	return (ure_ctl(sc, URE_CTL_WRITE, addr, index, buf, len));
219 }
220 
221 static uint8_t
222 ure_read_1(struct ure_softc *sc, uint16_t reg, uint16_t index)
223 {
224 	uint32_t val;
225 	uint8_t temp[4];
226 	uint8_t shift;
227 
228 	shift = (reg & 3) << 3;
229 	reg &= ~3;
230 
231 	ure_read_mem(sc, reg, index, &temp, 4);
232 	val = UGETDW(temp);
233 	val >>= shift;
234 
235 	return (val & 0xff);
236 }
237 
238 static uint16_t
239 ure_read_2(struct ure_softc *sc, uint16_t reg, uint16_t index)
240 {
241 	uint32_t val;
242 	uint8_t temp[4];
243 	uint8_t shift;
244 
245 	shift = (reg & 2) << 3;
246 	reg &= ~3;
247 
248 	ure_read_mem(sc, reg, index, &temp, 4);
249 	val = UGETDW(temp);
250 	val >>= shift;
251 
252 	return (val & 0xffff);
253 }
254 
255 static uint32_t
256 ure_read_4(struct ure_softc *sc, uint16_t reg, uint16_t index)
257 {
258 	uint8_t temp[4];
259 
260 	ure_read_mem(sc, reg, index, &temp, 4);
261 	return (UGETDW(temp));
262 }
263 
264 static int
265 ure_write_1(struct ure_softc *sc, uint16_t reg, uint16_t index, uint32_t val)
266 {
267 	uint16_t byen;
268 	uint8_t temp[4];
269 	uint8_t shift;
270 
271 	byen = URE_BYTE_EN_BYTE;
272 	shift = reg & 3;
273 	val &= 0xff;
274 
275 	if (reg & 3) {
276 		byen <<= shift;
277 		val <<= (shift << 3);
278 		reg &= ~3;
279 	}
280 
281 	USETDW(temp, val);
282 	return (ure_write_mem(sc, reg, index | byen, &temp, 4));
283 }
284 
285 static int
286 ure_write_2(struct ure_softc *sc, uint16_t reg, uint16_t index, uint32_t val)
287 {
288 	uint16_t byen;
289 	uint8_t temp[4];
290 	uint8_t shift;
291 
292 	byen = URE_BYTE_EN_WORD;
293 	shift = reg & 2;
294 	val &= 0xffff;
295 
296 	if (reg & 2) {
297 		byen <<= shift;
298 		val <<= (shift << 3);
299 		reg &= ~3;
300 	}
301 
302 	USETDW(temp, val);
303 	return (ure_write_mem(sc, reg, index | byen, &temp, 4));
304 }
305 
306 static int
307 ure_write_4(struct ure_softc *sc, uint16_t reg, uint16_t index, uint32_t val)
308 {
309 	uint8_t temp[4];
310 
311 	USETDW(temp, val);
312 	return (ure_write_mem(sc, reg, index | URE_BYTE_EN_DWORD, &temp, 4));
313 }
314 
315 static uint16_t
316 ure_ocp_reg_read(struct ure_softc *sc, uint16_t addr)
317 {
318 	uint16_t reg;
319 
320 	ure_write_2(sc, URE_PLA_OCP_GPHY_BASE, URE_MCU_TYPE_PLA, addr & 0xf000);
321 	reg = (addr & 0x0fff) | 0xb000;
322 
323 	return (ure_read_2(sc, reg, URE_MCU_TYPE_PLA));
324 }
325 
326 static void
327 ure_ocp_reg_write(struct ure_softc *sc, uint16_t addr, uint16_t data)
328 {
329 	uint16_t reg;
330 
331 	ure_write_2(sc, URE_PLA_OCP_GPHY_BASE, URE_MCU_TYPE_PLA, addr & 0xf000);
332 	reg = (addr & 0x0fff) | 0xb000;
333 
334 	ure_write_2(sc, reg, URE_MCU_TYPE_PLA, data);
335 }
336 
337 static int
338 ure_miibus_readreg(device_t dev, int phy, int reg)
339 {
340 	struct ure_softc *sc;
341 	uint16_t val;
342 	int locked;
343 
344 	sc = device_get_softc(dev);
345 	locked = mtx_owned(&sc->sc_mtx);
346 	if (!locked)
347 		URE_LOCK(sc);
348 
349 	/* Let the rgephy driver read the URE_GMEDIASTAT register. */
350 	if (reg == URE_GMEDIASTAT) {
351 		if (!locked)
352 			URE_UNLOCK(sc);
353 		return (ure_read_1(sc, URE_GMEDIASTAT, URE_MCU_TYPE_PLA));
354 	}
355 
356 	val = ure_ocp_reg_read(sc, URE_OCP_BASE_MII + reg * 2);
357 
358 	if (!locked)
359 		URE_UNLOCK(sc);
360 	return (val);
361 }
362 
363 static int
364 ure_miibus_writereg(device_t dev, int phy, int reg, int val)
365 {
366 	struct ure_softc *sc;
367 	int locked;
368 
369 	sc = device_get_softc(dev);
370 	if (sc->sc_phyno != phy)
371 		return (0);
372 
373 	locked = mtx_owned(&sc->sc_mtx);
374 	if (!locked)
375 		URE_LOCK(sc);
376 
377 	ure_ocp_reg_write(sc, URE_OCP_BASE_MII + reg * 2, val);
378 
379 	if (!locked)
380 		URE_UNLOCK(sc);
381 	return (0);
382 }
383 
384 static void
385 ure_miibus_statchg(device_t dev)
386 {
387 	struct ure_softc *sc;
388 	struct mii_data *mii;
389 	struct ifnet *ifp;
390 	int locked;
391 
392 	sc = device_get_softc(dev);
393 	mii = GET_MII(sc);
394 	locked = mtx_owned(&sc->sc_mtx);
395 	if (!locked)
396 		URE_LOCK(sc);
397 
398 	ifp = uether_getifp(&sc->sc_ue);
399 	if (mii == NULL || ifp == NULL ||
400 	    (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
401 		goto done;
402 
403 	sc->sc_flags &= ~URE_FLAG_LINK;
404 	if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
405 	    (IFM_ACTIVE | IFM_AVALID)) {
406 		switch (IFM_SUBTYPE(mii->mii_media_active)) {
407 		case IFM_10_T:
408 		case IFM_100_TX:
409 			sc->sc_flags |= URE_FLAG_LINK;
410 			break;
411 		case IFM_1000_T:
412 			if ((sc->sc_flags & URE_FLAG_8152) != 0)
413 				break;
414 			sc->sc_flags |= URE_FLAG_LINK;
415 			break;
416 		default:
417 			break;
418 		}
419 	}
420 
421 	/* Lost link, do nothing. */
422 	if ((sc->sc_flags & URE_FLAG_LINK) == 0)
423 		goto done;
424 done:
425 	if (!locked)
426 		URE_UNLOCK(sc);
427 }
428 
429 /*
430  * Probe for a RTL8152/RTL8153 chip.
431  */
432 static int
433 ure_probe(device_t dev)
434 {
435 	struct usb_attach_arg *uaa;
436 
437 	uaa = device_get_ivars(dev);
438 	if (uaa->usb_mode != USB_MODE_HOST)
439 		return (ENXIO);
440 	if (uaa->info.bConfigIndex != URE_CONFIG_IDX)
441 		return (ENXIO);
442 	if (uaa->info.bIfaceIndex != URE_IFACE_IDX)
443 		return (ENXIO);
444 
445 	return (usbd_lookup_id_by_uaa(ure_devs, sizeof(ure_devs), uaa));
446 }
447 
448 /*
449  * Attach the interface. Allocate softc structures, do ifmedia
450  * setup and ethernet/BPF attach.
451  */
452 static int
453 ure_attach(device_t dev)
454 {
455 	struct usb_attach_arg *uaa = device_get_ivars(dev);
456 	struct ure_softc *sc = device_get_softc(dev);
457 	struct usb_ether *ue = &sc->sc_ue;
458 	uint8_t iface_index;
459 	int error;
460 
461 	sc->sc_flags = USB_GET_DRIVER_INFO(uaa);
462 	device_set_usb_desc(dev);
463 	mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
464 
465 	iface_index = URE_IFACE_IDX;
466 	error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
467 	    ure_config, URE_N_TRANSFER, sc, &sc->sc_mtx);
468 	if (error != 0) {
469 		device_printf(dev, "allocating USB transfers failed\n");
470 		goto detach;
471 	}
472 
473 	ue->ue_sc = sc;
474 	ue->ue_dev = dev;
475 	ue->ue_udev = uaa->device;
476 	ue->ue_mtx = &sc->sc_mtx;
477 	ue->ue_methods = &ure_ue_methods;
478 
479 	error = uether_ifattach(ue);
480 	if (error != 0) {
481 		device_printf(dev, "could not attach interface\n");
482 		goto detach;
483 	}
484 	return (0);			/* success */
485 
486 detach:
487 	ure_detach(dev);
488 	return (ENXIO);			/* failure */
489 }
490 
491 static int
492 ure_detach(device_t dev)
493 {
494 	struct ure_softc *sc = device_get_softc(dev);
495 	struct usb_ether *ue = &sc->sc_ue;
496 
497 	usbd_transfer_unsetup(sc->sc_xfer, URE_N_TRANSFER);
498 	uether_ifdetach(ue);
499 	mtx_destroy(&sc->sc_mtx);
500 
501 	return (0);
502 }
503 
504 static void
505 ure_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
506 {
507 	struct ure_softc *sc = usbd_xfer_softc(xfer);
508 	struct usb_ether *ue = &sc->sc_ue;
509 	struct ifnet *ifp = uether_getifp(ue);
510 	struct usb_page_cache *pc;
511 	struct ure_rxpkt pkt;
512 	int actlen, len;
513 
514 	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
515 
516 	switch (USB_GET_STATE(xfer)) {
517 	case USB_ST_TRANSFERRED:
518 		if (actlen < (int)(sizeof(pkt))) {
519 			if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
520 			goto tr_setup;
521 		}
522 		pc = usbd_xfer_get_frame(xfer, 0);
523 		usbd_copy_out(pc, 0, &pkt, sizeof(pkt));
524 		len = le32toh(pkt.ure_pktlen) & URE_RXPKT_LEN_MASK;
525 		len -= ETHER_CRC_LEN;
526 		if (actlen < (int)(len + sizeof(pkt))) {
527 			if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
528 			goto tr_setup;
529 		}
530 
531 		uether_rxbuf(ue, pc, sizeof(pkt), len);
532 		/* FALLTHROUGH */
533 	case USB_ST_SETUP:
534 tr_setup:
535 		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
536 		usbd_transfer_submit(xfer);
537 		uether_rxflush(ue);
538 		return;
539 
540 	default:			/* Error */
541 		DPRINTF("bulk read error, %s\n",
542 		    usbd_errstr(error));
543 
544 		if (error != USB_ERR_CANCELLED) {
545 			/* try to clear stall first */
546 			usbd_xfer_set_stall(xfer);
547 			goto tr_setup;
548 		}
549 		return;
550 	}
551 }
552 
553 static void
554 ure_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
555 {
556 	struct ure_softc *sc = usbd_xfer_softc(xfer);
557 	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
558 	struct usb_page_cache *pc;
559 	struct mbuf *m;
560 	struct ure_txpkt txpkt;
561 	int len, pos;
562 
563 	switch (USB_GET_STATE(xfer)) {
564 	case USB_ST_TRANSFERRED:
565 		DPRINTFN(11, "transfer complete\n");
566 		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
567 		/* FALLTHROUGH */
568 	case USB_ST_SETUP:
569 tr_setup:
570 		if ((sc->sc_flags & URE_FLAG_LINK) == 0 ||
571 		    (ifp->if_drv_flags & IFF_DRV_OACTIVE) != 0) {
572 			/*
573 			 * don't send anything if there is no link !
574 			 */
575 			return;
576 		}
577 		IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
578 		if (m == NULL)
579 			break;
580 		pos = 0;
581 		len = m->m_pkthdr.len;
582 		pc = usbd_xfer_get_frame(xfer, 0);
583 		memset(&txpkt, 0, sizeof(txpkt));
584 		txpkt.ure_pktlen = htole32((len & URE_TXPKT_LEN_MASK) |
585 		    URE_TKPKT_TX_FS | URE_TKPKT_TX_LS);
586 		usbd_copy_in(pc, pos, &txpkt, sizeof(txpkt));
587 		pos += sizeof(txpkt);
588 		usbd_m_copy_in(pc, pos, m, 0, m->m_pkthdr.len);
589 		pos += m->m_pkthdr.len;
590 
591 		if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
592 
593 		/*
594 		 * If there's a BPF listener, bounce a copy
595 		 * of this frame to him.
596 		 */
597 		BPF_MTAP(ifp, m);
598 
599 		m_freem(m);
600 
601 		/* Set frame length. */
602 		usbd_xfer_set_frame_len(xfer, 0, pos);
603 
604 		usbd_transfer_submit(xfer);
605 		ifp->if_drv_flags |= IFF_DRV_OACTIVE;
606 		return;
607 	default:			/* Error */
608 		DPRINTFN(11, "transfer error, %s\n",
609 		    usbd_errstr(error));
610 
611 		if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
612 		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
613 
614 		if (error != USB_ERR_CANCELLED) {
615 			/* try to clear stall first */
616 			usbd_xfer_set_stall(xfer);
617 			goto tr_setup;
618 		}
619 		return;
620 	}
621 }
622 
623 static void
624 ure_read_chipver(struct ure_softc *sc)
625 {
626 	uint16_t ver;
627 
628 	ver = ure_read_2(sc, URE_PLA_TCR1, URE_MCU_TYPE_PLA) & URE_VERSION_MASK;
629 	switch (ver) {
630 	case 0x4c00:
631 		sc->sc_chip |= URE_CHIP_VER_4C00;
632 		break;
633 	case 0x4c10:
634 		sc->sc_chip |= URE_CHIP_VER_4C10;
635 		break;
636 	case 0x5c00:
637 		sc->sc_chip |= URE_CHIP_VER_5C00;
638 		break;
639 	case 0x5c10:
640 		sc->sc_chip |= URE_CHIP_VER_5C10;
641 		break;
642 	case 0x5c20:
643 		sc->sc_chip |= URE_CHIP_VER_5C20;
644 		break;
645 	case 0x5c30:
646 		sc->sc_chip |= URE_CHIP_VER_5C30;
647 		break;
648 	default:
649 		device_printf(sc->sc_ue.ue_dev,
650 		    "unknown version 0x%04x\n", ver);
651 		break;
652 	}
653 }
654 
655 static void
656 ure_attach_post(struct usb_ether *ue)
657 {
658 	struct ure_softc *sc = uether_getsc(ue);
659 
660 	sc->sc_phyno = 0;
661 
662 	/* Determine the chip version. */
663 	ure_read_chipver(sc);
664 
665 	/* Initialize controller and get station address. */
666 	if (sc->sc_flags & URE_FLAG_8152)
667 		ure_rtl8152_init(sc);
668 	else
669 		ure_rtl8153_init(sc);
670 
671 	if (sc->sc_chip & URE_CHIP_VER_4C00)
672 		ure_read_mem(sc, URE_PLA_IDR, URE_MCU_TYPE_PLA,
673 		    ue->ue_eaddr, 8);
674 	else
675 		ure_read_mem(sc, URE_PLA_BACKUP, URE_MCU_TYPE_PLA,
676 		    ue->ue_eaddr, 8);
677 }
678 
679 static int
680 ure_attach_post_sub(struct usb_ether *ue)
681 {
682 	struct ure_softc *sc;
683 	struct ifnet *ifp;
684 	int error;
685 
686 	sc = uether_getsc(ue);
687 	ifp = ue->ue_ifp;
688 	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
689 	ifp->if_start = uether_start;
690 	ifp->if_ioctl = ure_ioctl;
691 	ifp->if_init = uether_init;
692 	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
693 	ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
694 	IFQ_SET_READY(&ifp->if_snd);
695 
696 	mtx_lock(&Giant);
697 	error = mii_attach(ue->ue_dev, &ue->ue_miibus, ifp,
698 	    uether_ifmedia_upd, ue->ue_methods->ue_mii_sts,
699 	    BMSR_DEFCAPMASK, sc->sc_phyno, MII_OFFSET_ANY, 0);
700 	mtx_unlock(&Giant);
701 
702 	return (error);
703 }
704 
705 static void
706 ure_init(struct usb_ether *ue)
707 {
708 	struct ure_softc *sc = uether_getsc(ue);
709 	struct ifnet *ifp = uether_getifp(ue);
710 
711 	URE_LOCK_ASSERT(sc, MA_OWNED);
712 
713 	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
714 		return;
715 
716 	/* Cancel pending I/O. */
717 	ure_stop(ue);
718 
719 	ure_reset(sc);
720 
721 	/* Set MAC address. */
722 	ure_write_mem(sc, URE_PLA_IDR, URE_MCU_TYPE_PLA | URE_BYTE_EN_SIX_BYTES,
723 	    IF_LLADDR(ifp), 8);
724 
725 	/* Reset the packet filter. */
726 	ure_write_2(sc, URE_PLA_FMC, URE_MCU_TYPE_PLA,
727 	    ure_read_2(sc, URE_PLA_FMC, URE_MCU_TYPE_PLA) &
728 	    ~URE_FMC_FCR_MCU_EN);
729 	ure_write_2(sc, URE_PLA_FMC, URE_MCU_TYPE_PLA,
730 	    ure_read_2(sc, URE_PLA_FMC, URE_MCU_TYPE_PLA) |
731 	    URE_FMC_FCR_MCU_EN);
732 
733 	/* Enable transmit and receive. */
734 	ure_write_1(sc, URE_PLA_CR, URE_MCU_TYPE_PLA,
735 	    ure_read_1(sc, URE_PLA_CR, URE_MCU_TYPE_PLA) | URE_CR_RE |
736 	    URE_CR_TE);
737 
738 	ure_write_2(sc, URE_PLA_MISC_1, URE_MCU_TYPE_PLA,
739 	    ure_read_2(sc, URE_PLA_MISC_1, URE_MCU_TYPE_PLA) &
740 	    ~URE_RXDY_GATED_EN);
741 
742 	/*  Configure RX filters. */
743 	ure_rxfilter(ue);
744 
745 	usbd_xfer_set_stall(sc->sc_xfer[URE_BULK_DT_WR]);
746 
747 	/* Indicate we are up and running. */
748 	ifp->if_drv_flags |= IFF_DRV_RUNNING;
749 
750 	/* Switch to selected media. */
751 	ure_ifmedia_upd(ifp);
752 }
753 
754 static void
755 ure_tick(struct usb_ether *ue)
756 {
757 	struct ure_softc *sc = uether_getsc(ue);
758 	struct mii_data *mii = GET_MII(sc);
759 
760 	URE_LOCK_ASSERT(sc, MA_OWNED);
761 
762 	mii_tick(mii);
763 	if ((sc->sc_flags & URE_FLAG_LINK) == 0
764 	    && mii->mii_media_status & IFM_ACTIVE &&
765 	    IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
766 		sc->sc_flags |= URE_FLAG_LINK;
767 		ure_start(ue);
768 	}
769 }
770 
771 /*
772  * Program the 64-bit multicast hash filter.
773  */
774 static void
775 ure_rxfilter(struct usb_ether *ue)
776 {
777 	struct ure_softc *sc = uether_getsc(ue);
778 	struct ifnet *ifp = uether_getifp(ue);
779 	struct ifmultiaddr *ifma;
780 	uint32_t h, rxmode;
781 	uint32_t hashes[2] = { 0, 0 };
782 
783 	URE_LOCK_ASSERT(sc, MA_OWNED);
784 
785 	rxmode = URE_RCR_APM;
786 	if (ifp->if_flags & IFF_BROADCAST)
787 		 rxmode |= URE_RCR_AB;
788 	if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
789 		if (ifp->if_flags & IFF_PROMISC)
790 			rxmode |= URE_RCR_AAP;
791 		rxmode |= URE_RCR_AM;
792 		hashes[0] = hashes[1] = 0xffffffff;
793 		goto done;
794 	}
795 
796 	rxmode |= URE_RCR_AM;
797 	if_maddr_rlock(ifp);
798 	TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
799 		if (ifma->ifma_addr->sa_family != AF_LINK)
800 			continue;
801 		h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
802 		ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
803 		if (h < 32)
804 			hashes[0] |= (1 << h);
805 		else
806 			hashes[1] |= (1 << (h - 32));
807 	}
808 	if_maddr_runlock(ifp);
809 
810 	h = bswap32(hashes[0]);
811 	hashes[0] = bswap32(hashes[1]);
812 	hashes[1] = h;
813 	rxmode |= URE_RCR_AM;
814 
815 done:
816 	ure_write_4(sc, URE_PLA_MAR0, URE_MCU_TYPE_PLA, hashes[0]);
817 	ure_write_4(sc, URE_PLA_MAR4, URE_MCU_TYPE_PLA, hashes[1]);
818 	ure_write_4(sc, URE_PLA_RCR, URE_MCU_TYPE_PLA, rxmode);
819 }
820 
821 static void
822 ure_start(struct usb_ether *ue)
823 {
824 	struct ure_softc *sc = uether_getsc(ue);
825 
826 	/*
827 	 * start the USB transfers, if not already started:
828 	 */
829 	usbd_transfer_start(sc->sc_xfer[URE_BULK_DT_RD]);
830 	usbd_transfer_start(sc->sc_xfer[URE_BULK_DT_WR]);
831 }
832 
833 static void
834 ure_reset(struct ure_softc *sc)
835 {
836 	int i;
837 
838 	ure_write_1(sc, URE_PLA_CR, URE_MCU_TYPE_PLA, URE_CR_RST);
839 
840 	for (i = 0; i < URE_TIMEOUT; i++) {
841 		if (!(ure_read_1(sc, URE_PLA_CR, URE_MCU_TYPE_PLA) &
842 		    URE_CR_RST))
843 			break;
844 		uether_pause(&sc->sc_ue, hz / 100);
845 	}
846 	if (i == URE_TIMEOUT)
847 		device_printf(sc->sc_ue.ue_dev, "reset never completed\n");
848 }
849 
850 /*
851  * Set media options.
852  */
853 static int
854 ure_ifmedia_upd(struct ifnet *ifp)
855 {
856 	struct ure_softc *sc = ifp->if_softc;
857 	struct mii_data *mii = GET_MII(sc);
858 	struct mii_softc *miisc;
859 	int error;
860 
861 	URE_LOCK_ASSERT(sc, MA_OWNED);
862 
863 	LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
864 		PHY_RESET(miisc);
865 	error = mii_mediachg(mii);
866 	return (error);
867 }
868 
869 /*
870  * Report current media status.
871  */
872 static void
873 ure_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
874 {
875 	struct ure_softc *sc;
876 	struct mii_data *mii;
877 
878 	sc = ifp->if_softc;
879 	mii = GET_MII(sc);
880 
881 	URE_LOCK(sc);
882 	mii_pollstat(mii);
883 	ifmr->ifm_active = mii->mii_media_active;
884 	ifmr->ifm_status = mii->mii_media_status;
885 	URE_UNLOCK(sc);
886 }
887 
888 static int
889 ure_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
890 {
891 	struct usb_ether *ue = ifp->if_softc;
892 	struct ure_softc *sc;
893 	struct ifreq *ifr;
894 	int error, mask, reinit;
895 
896 	sc = uether_getsc(ue);
897 	ifr = (struct ifreq *)data;
898 	error = 0;
899 	reinit = 0;
900 	if (cmd == SIOCSIFCAP) {
901 		URE_LOCK(sc);
902 		mask = ifr->ifr_reqcap ^ ifp->if_capenable;
903 		if (reinit > 0 && ifp->if_drv_flags & IFF_DRV_RUNNING)
904 			ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
905 		else
906 			reinit = 0;
907 		URE_UNLOCK(sc);
908 		if (reinit > 0)
909 			uether_init(ue);
910 	} else
911 		error = uether_ioctl(ifp, cmd, data);
912 
913 	return (error);
914 }
915 
916 static void
917 ure_rtl8152_init(struct ure_softc *sc)
918 {
919 	uint32_t pwrctrl;
920 
921 	/* Disable ALDPS. */
922 	ure_ocp_reg_write(sc, URE_OCP_ALDPS_CONFIG, URE_ENPDNPS | URE_LINKENA |
923 	    URE_DIS_SDSAVE);
924 	uether_pause(&sc->sc_ue, hz / 50);
925 
926 	if (sc->sc_chip & URE_CHIP_VER_4C00) {
927 		ure_write_2(sc, URE_PLA_LED_FEATURE, URE_MCU_TYPE_PLA,
928 		    ure_read_2(sc, URE_PLA_LED_FEATURE, URE_MCU_TYPE_PLA) &
929 		    ~URE_LED_MODE_MASK);
930 	}
931 
932 	ure_write_2(sc, URE_USB_UPS_CTRL, URE_MCU_TYPE_USB,
933 	    ure_read_2(sc, URE_USB_UPS_CTRL, URE_MCU_TYPE_USB) &
934 	    ~URE_POWER_CUT);
935 	ure_write_2(sc, URE_USB_PM_CTRL_STATUS, URE_MCU_TYPE_USB,
936 	    ure_read_2(sc, URE_USB_PM_CTRL_STATUS, URE_MCU_TYPE_USB) &
937 	    ~URE_RESUME_INDICATE);
938 
939 	ure_write_2(sc, URE_PLA_PHY_PWR, URE_MCU_TYPE_PLA,
940 	    ure_read_2(sc, URE_PLA_PHY_PWR, URE_MCU_TYPE_PLA) |
941 	    URE_TX_10M_IDLE_EN | URE_PFM_PWM_SWITCH);
942 	pwrctrl = ure_read_4(sc, URE_PLA_MAC_PWR_CTRL, URE_MCU_TYPE_PLA);
943 	pwrctrl &= ~URE_MCU_CLK_RATIO_MASK;
944 	pwrctrl |= URE_MCU_CLK_RATIO | URE_D3_CLK_GATED_EN;
945 	ure_write_4(sc, URE_PLA_MAC_PWR_CTRL, URE_MCU_TYPE_PLA, pwrctrl);
946 	ure_write_2(sc, URE_PLA_GPHY_INTR_IMR, URE_MCU_TYPE_PLA,
947 	    URE_GPHY_STS_MSK | URE_SPEED_DOWN_MSK | URE_SPDWN_RXDV_MSK |
948 	    URE_SPDWN_LINKCHG_MSK);
949 
950 	/* Disable Rx aggregation. */
951 	ure_write_2(sc, URE_USB_USB_CTRL, URE_MCU_TYPE_USB,
952 	    ure_read_2(sc, URE_USB_USB_CTRL, URE_MCU_TYPE_USB) |
953 	    URE_RX_AGG_DISABLE);
954 
955         /* Disable ALDPS. */
956 	ure_ocp_reg_write(sc, URE_OCP_ALDPS_CONFIG, URE_ENPDNPS | URE_LINKENA |
957 	    URE_DIS_SDSAVE);
958 	uether_pause(&sc->sc_ue, hz / 50);
959 
960 	ure_init_fifo(sc);
961 
962 	ure_write_1(sc, URE_USB_TX_AGG, URE_MCU_TYPE_USB,
963 	    URE_TX_AGG_MAX_THRESHOLD);
964 	ure_write_4(sc, URE_USB_RX_BUF_TH, URE_MCU_TYPE_USB, URE_RX_THR_HIGH);
965 	ure_write_4(sc, URE_USB_TX_DMA, URE_MCU_TYPE_USB,
966 	    URE_TEST_MODE_DISABLE | URE_TX_SIZE_ADJUST1);
967 }
968 
969 static void
970 ure_rtl8153_init(struct ure_softc *sc)
971 {
972 	uint16_t val;
973 	uint8_t u1u2[8];
974 	int i;
975 
976 	/* Disable ALDPS. */
977 	ure_ocp_reg_write(sc, URE_OCP_POWER_CFG,
978 	    ure_ocp_reg_read(sc, URE_OCP_POWER_CFG) & ~URE_EN_ALDPS);
979 	uether_pause(&sc->sc_ue, hz / 50);
980 
981 	memset(u1u2, 0x00, sizeof(u1u2));
982 	ure_write_mem(sc, URE_USB_TOLERANCE,
983 	    URE_MCU_TYPE_USB | URE_BYTE_EN_SIX_BYTES, u1u2, sizeof(u1u2));
984 
985         for (i = 0; i < URE_TIMEOUT; i++) {
986 		if (ure_read_2(sc, URE_PLA_BOOT_CTRL, URE_MCU_TYPE_PLA) &
987 		    URE_AUTOLOAD_DONE)
988 			break;
989 		uether_pause(&sc->sc_ue, hz / 100);
990 	}
991 	if (i == URE_TIMEOUT)
992 		device_printf(sc->sc_ue.ue_dev,
993 		    "timeout waiting for chip autoload\n");
994 
995         for (i = 0; i < URE_TIMEOUT; i++) {
996 		val = ure_ocp_reg_read(sc, URE_OCP_PHY_STATUS) &
997 		    URE_PHY_STAT_MASK;
998 		if (val == URE_PHY_STAT_LAN_ON || val == URE_PHY_STAT_PWRDN)
999 			break;
1000 		uether_pause(&sc->sc_ue, hz / 100);
1001 	}
1002 	if (i == URE_TIMEOUT)
1003 		device_printf(sc->sc_ue.ue_dev,
1004 		    "timeout waiting for phy to stabilize\n");
1005 
1006 	ure_write_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB,
1007 	    ure_read_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB) &
1008 	    ~URE_U2P3_ENABLE);
1009 
1010 	if (sc->sc_chip & URE_CHIP_VER_5C10) {
1011 		val = ure_read_2(sc, URE_USB_SSPHYLINK2, URE_MCU_TYPE_USB);
1012 		val &= ~URE_PWD_DN_SCALE_MASK;
1013 		val |= URE_PWD_DN_SCALE(96);
1014 		ure_write_2(sc, URE_USB_SSPHYLINK2, URE_MCU_TYPE_USB, val);
1015 
1016 		ure_write_1(sc, URE_USB_USB2PHY, URE_MCU_TYPE_USB,
1017 		    ure_read_1(sc, URE_USB_USB2PHY, URE_MCU_TYPE_USB) |
1018 		    URE_USB2PHY_L1 | URE_USB2PHY_SUSPEND);
1019 	} else if (sc->sc_chip & URE_CHIP_VER_5C20) {
1020 		ure_write_1(sc, URE_PLA_DMY_REG0, URE_MCU_TYPE_PLA,
1021 		    ure_read_1(sc, URE_PLA_DMY_REG0, URE_MCU_TYPE_PLA) &
1022 		    ~URE_ECM_ALDPS);
1023 	}
1024 	if (sc->sc_chip & (URE_CHIP_VER_5C20 | URE_CHIP_VER_5C30)) {
1025 		val = ure_read_1(sc, URE_USB_CSR_DUMMY1, URE_MCU_TYPE_USB);
1026 		if (ure_read_2(sc, URE_USB_BURST_SIZE, URE_MCU_TYPE_USB) ==
1027 		    0)
1028 			val &= ~URE_DYNAMIC_BURST;
1029 		else
1030 			val |= URE_DYNAMIC_BURST;
1031 		ure_write_1(sc, URE_USB_CSR_DUMMY1, URE_MCU_TYPE_USB, val);
1032 	}
1033 
1034 	ure_write_1(sc, URE_USB_CSR_DUMMY2, URE_MCU_TYPE_USB,
1035 	    ure_read_1(sc, URE_USB_CSR_DUMMY2, URE_MCU_TYPE_USB) |
1036 	    URE_EP4_FULL_FC);
1037 
1038 	ure_write_2(sc, URE_USB_WDT11_CTRL, URE_MCU_TYPE_USB,
1039 	    ure_read_2(sc, URE_USB_WDT11_CTRL, URE_MCU_TYPE_USB) &
1040 	    ~URE_TIMER11_EN);
1041 
1042 	ure_write_2(sc, URE_PLA_LED_FEATURE, URE_MCU_TYPE_PLA,
1043 	    ure_read_2(sc, URE_PLA_LED_FEATURE, URE_MCU_TYPE_PLA) &
1044 	    ~URE_LED_MODE_MASK);
1045 
1046 	if ((sc->sc_chip & URE_CHIP_VER_5C10) &&
1047 	    usbd_get_speed(sc->sc_ue.ue_udev) != USB_SPEED_SUPER)
1048 		val = URE_LPM_TIMER_500MS;
1049 	else
1050 		val = URE_LPM_TIMER_500US;
1051 	ure_write_1(sc, URE_USB_LPM_CTRL, URE_MCU_TYPE_USB,
1052 	    val | URE_FIFO_EMPTY_1FB | URE_ROK_EXIT_LPM);
1053 
1054 	val = ure_read_2(sc, URE_USB_AFE_CTRL2, URE_MCU_TYPE_USB);
1055 	val &= ~URE_SEN_VAL_MASK;
1056 	val |= URE_SEN_VAL_NORMAL | URE_SEL_RXIDLE;
1057 	ure_write_2(sc, URE_USB_AFE_CTRL2, URE_MCU_TYPE_USB, val);
1058 
1059 	ure_write_2(sc, URE_USB_CONNECT_TIMER, URE_MCU_TYPE_USB, 0x0001);
1060 
1061 	ure_write_2(sc, URE_USB_POWER_CUT, URE_MCU_TYPE_USB,
1062 	    ure_read_2(sc, URE_USB_POWER_CUT, URE_MCU_TYPE_USB) &
1063 	    ~(URE_PWR_EN | URE_PHASE2_EN));
1064 	ure_write_2(sc, URE_USB_MISC_0, URE_MCU_TYPE_USB,
1065 	    ure_read_2(sc, URE_USB_MISC_0, URE_MCU_TYPE_USB) &
1066 	    ~URE_PCUT_STATUS);
1067 
1068 	memset(u1u2, 0xff, sizeof(u1u2));
1069 	ure_write_mem(sc, URE_USB_TOLERANCE,
1070 	    URE_MCU_TYPE_USB | URE_BYTE_EN_SIX_BYTES, u1u2, sizeof(u1u2));
1071 
1072 	ure_write_2(sc, URE_PLA_MAC_PWR_CTRL, URE_MCU_TYPE_PLA,
1073 	    URE_ALDPS_SPDWN_RATIO);
1074 	ure_write_2(sc, URE_PLA_MAC_PWR_CTRL2, URE_MCU_TYPE_PLA,
1075 	    URE_EEE_SPDWN_RATIO);
1076 	ure_write_2(sc, URE_PLA_MAC_PWR_CTRL3, URE_MCU_TYPE_PLA,
1077 	    URE_PKT_AVAIL_SPDWN_EN | URE_SUSPEND_SPDWN_EN |
1078 	    URE_U1U2_SPDWN_EN | URE_L1_SPDWN_EN);
1079 	ure_write_2(sc, URE_PLA_MAC_PWR_CTRL4, URE_MCU_TYPE_PLA,
1080 	    URE_PWRSAVE_SPDWN_EN | URE_RXDV_SPDWN_EN | URE_TX10MIDLE_EN |
1081 	    URE_TP100_SPDWN_EN | URE_TP500_SPDWN_EN | URE_TP1000_SPDWN_EN |
1082 	    URE_EEE_SPDWN_EN);
1083 
1084 	val = ure_read_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB);
1085 	if (!(sc->sc_chip & (URE_CHIP_VER_5C00 | URE_CHIP_VER_5C10)))
1086 		val |= URE_U2P3_ENABLE;
1087 	else
1088 		val &= ~URE_U2P3_ENABLE;
1089 	ure_write_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB, val);
1090 
1091 	memset(u1u2, 0x00, sizeof(u1u2));
1092         ure_write_mem(sc, URE_USB_TOLERANCE,
1093 	    URE_MCU_TYPE_USB | URE_BYTE_EN_SIX_BYTES, u1u2, sizeof(u1u2));
1094 
1095 	/* Disable ALDPS. */
1096 	ure_ocp_reg_write(sc, URE_OCP_POWER_CFG,
1097 	    ure_ocp_reg_read(sc, URE_OCP_POWER_CFG) & ~URE_EN_ALDPS);
1098 	uether_pause(&sc->sc_ue, hz / 50);
1099 
1100 	ure_init_fifo(sc);
1101 
1102 	/* Disable Rx aggregation. */
1103 	ure_write_2(sc, URE_USB_USB_CTRL, URE_MCU_TYPE_USB,
1104 	    ure_read_2(sc, URE_USB_USB_CTRL, URE_MCU_TYPE_USB) |
1105 	    URE_RX_AGG_DISABLE);
1106 
1107 	val = ure_read_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB);
1108 	if (!(sc->sc_chip & (URE_CHIP_VER_5C00 | URE_CHIP_VER_5C10)))
1109 		val |= URE_U2P3_ENABLE;
1110 	else
1111 		val &= ~URE_U2P3_ENABLE;
1112 	ure_write_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB, val);
1113 
1114 	memset(u1u2, 0xff, sizeof(u1u2));
1115 	ure_write_mem(sc, URE_USB_TOLERANCE,
1116 	    URE_MCU_TYPE_USB | URE_BYTE_EN_SIX_BYTES, u1u2, sizeof(u1u2));
1117 }
1118 
1119 static void
1120 ure_stop(struct usb_ether *ue)
1121 {
1122 	struct ure_softc *sc = uether_getsc(ue);
1123 	struct ifnet *ifp = uether_getifp(ue);
1124 
1125 	URE_LOCK_ASSERT(sc, MA_OWNED);
1126 
1127 	ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1128 	sc->sc_flags &= ~URE_FLAG_LINK;
1129 
1130 	/*
1131 	 * stop all the transfers, if not already stopped:
1132 	 */
1133 	usbd_transfer_stop(sc->sc_xfer[URE_BULK_DT_WR]);
1134 	usbd_transfer_stop(sc->sc_xfer[URE_BULK_DT_RD]);
1135 }
1136 
1137 static void
1138 ure_disable_teredo(struct ure_softc *sc)
1139 {
1140 
1141 	ure_write_4(sc, URE_PLA_TEREDO_CFG, URE_MCU_TYPE_PLA,
1142 	    ure_read_4(sc, URE_PLA_TEREDO_CFG, URE_MCU_TYPE_PLA) &
1143 	    ~(URE_TEREDO_SEL | URE_TEREDO_RS_EVENT_MASK | URE_OOB_TEREDO_EN));
1144 	ure_write_2(sc, URE_PLA_WDT6_CTRL, URE_MCU_TYPE_PLA,
1145 	    URE_WDT6_SET_MODE);
1146 	ure_write_2(sc, URE_PLA_REALWOW_TIMER, URE_MCU_TYPE_PLA, 0);
1147 	ure_write_4(sc, URE_PLA_TEREDO_TIMER, URE_MCU_TYPE_PLA, 0);
1148 }
1149 
1150 static void
1151 ure_init_fifo(struct ure_softc *sc)
1152 {
1153 	uint32_t rx_fifo1, rx_fifo2;
1154 	int i;
1155 
1156 	ure_write_2(sc, URE_PLA_MISC_1, URE_MCU_TYPE_PLA,
1157 	    ure_read_2(sc, URE_PLA_MISC_1, URE_MCU_TYPE_PLA) |
1158 	    URE_RXDY_GATED_EN);
1159 
1160 	ure_disable_teredo(sc);
1161 
1162 	ure_write_4(sc, URE_PLA_RCR, URE_MCU_TYPE_PLA,
1163 	    ure_read_4(sc, URE_PLA_RCR, URE_MCU_TYPE_PLA) &
1164 	    ~URE_RCR_ACPT_ALL);
1165 
1166 	if (!(sc->sc_flags & URE_FLAG_8152)) {
1167 		if (sc->sc_chip & (URE_CHIP_VER_5C00 | URE_CHIP_VER_5C10 |
1168 		    URE_CHIP_VER_5C20)) {
1169 				ure_ocp_reg_write(sc, URE_OCP_ADC_CFG,
1170 				    URE_CKADSEL_L | URE_ADC_EN | URE_EN_EMI_L);
1171 		}
1172 		if (sc->sc_chip & URE_CHIP_VER_5C00) {
1173 			ure_ocp_reg_write(sc, URE_OCP_EEE_CFG,
1174 			    ure_ocp_reg_read(sc, URE_OCP_EEE_CFG) &
1175 			    ~URE_CTAP_SHORT_EN);
1176 		}
1177 		ure_ocp_reg_write(sc, URE_OCP_POWER_CFG,
1178 		    ure_ocp_reg_read(sc, URE_OCP_POWER_CFG) |
1179 		    URE_EEE_CLKDIV_EN);
1180 		ure_ocp_reg_write(sc, URE_OCP_DOWN_SPEED,
1181 		    ure_ocp_reg_read(sc, URE_OCP_DOWN_SPEED) |
1182 		    URE_EN_10M_BGOFF);
1183 		ure_ocp_reg_write(sc, URE_OCP_POWER_CFG,
1184 		    ure_ocp_reg_read(sc, URE_OCP_POWER_CFG) |
1185 		    URE_EN_10M_PLLOFF);
1186 		ure_ocp_reg_write(sc, URE_OCP_SRAM_ADDR, URE_SRAM_IMPEDANCE);
1187 		ure_ocp_reg_write(sc, URE_OCP_SRAM_DATA, 0x0b13);
1188 		ure_write_2(sc, URE_PLA_PHY_PWR, URE_MCU_TYPE_PLA,
1189 		    ure_read_2(sc, URE_PLA_PHY_PWR, URE_MCU_TYPE_PLA) |
1190 		    URE_PFM_PWM_SWITCH);
1191 
1192 		/* Enable LPF corner auto tune. */
1193 		ure_ocp_reg_write(sc, URE_OCP_SRAM_ADDR, URE_SRAM_LPF_CFG);
1194 		ure_ocp_reg_write(sc, URE_OCP_SRAM_DATA, 0xf70f);
1195 
1196 		/* Adjust 10M amplitude. */
1197 		ure_ocp_reg_write(sc, URE_OCP_SRAM_ADDR, URE_SRAM_10M_AMP1);
1198 		ure_ocp_reg_write(sc, URE_OCP_SRAM_DATA, 0x00af);
1199 		ure_ocp_reg_write(sc, URE_OCP_SRAM_ADDR, URE_SRAM_10M_AMP2);
1200 		ure_ocp_reg_write(sc, URE_OCP_SRAM_DATA, 0x0208);
1201 	}
1202 
1203 	ure_reset(sc);
1204 
1205 	ure_write_1(sc, URE_PLA_CR, URE_MCU_TYPE_PLA, 0);
1206 
1207 	ure_write_1(sc, URE_PLA_OOB_CTRL, URE_MCU_TYPE_PLA,
1208 	    ure_read_1(sc, URE_PLA_OOB_CTRL, URE_MCU_TYPE_PLA) &
1209 	    ~URE_NOW_IS_OOB);
1210 
1211 	ure_write_2(sc, URE_PLA_SFF_STS_7, URE_MCU_TYPE_PLA,
1212 	    ure_read_2(sc, URE_PLA_SFF_STS_7, URE_MCU_TYPE_PLA) &
1213 	    ~URE_MCU_BORW_EN);
1214 	for (i = 0; i < URE_TIMEOUT; i++) {
1215 		if (ure_read_1(sc, URE_PLA_OOB_CTRL, URE_MCU_TYPE_PLA) &
1216 		    URE_LINK_LIST_READY)
1217 			break;
1218 		uether_pause(&sc->sc_ue, hz / 100);
1219 	}
1220 	if (i == URE_TIMEOUT)
1221 		device_printf(sc->sc_ue.ue_dev,
1222 		    "timeout waiting for OOB control\n");
1223 	ure_write_2(sc, URE_PLA_SFF_STS_7, URE_MCU_TYPE_PLA,
1224 	    ure_read_2(sc, URE_PLA_SFF_STS_7, URE_MCU_TYPE_PLA) |
1225 	    URE_RE_INIT_LL);
1226 	for (i = 0; i < URE_TIMEOUT; i++) {
1227 		if (ure_read_1(sc, URE_PLA_OOB_CTRL, URE_MCU_TYPE_PLA) &
1228 		    URE_LINK_LIST_READY)
1229 			break;
1230 		uether_pause(&sc->sc_ue, hz / 100);
1231 	}
1232 	if (i == URE_TIMEOUT)
1233 		device_printf(sc->sc_ue.ue_dev,
1234 		    "timeout waiting for OOB control\n");
1235 
1236 	ure_write_2(sc, URE_PLA_CPCR, URE_MCU_TYPE_PLA,
1237 	    ure_read_2(sc, URE_PLA_CPCR, URE_MCU_TYPE_PLA) &
1238 	    ~URE_CPCR_RX_VLAN);
1239 	ure_write_2(sc, URE_PLA_TCR0, URE_MCU_TYPE_PLA,
1240 	    ure_read_2(sc, URE_PLA_TCR0, URE_MCU_TYPE_PLA) |
1241 	    URE_TCR0_AUTO_FIFO);
1242 
1243 	/* Configure Rx FIFO threshold. */
1244 	ure_write_4(sc, URE_PLA_RXFIFO_CTRL0, URE_MCU_TYPE_PLA,
1245 	    URE_RXFIFO_THR1_NORMAL);
1246 	if (usbd_get_speed(sc->sc_ue.ue_udev) == USB_SPEED_FULL) {
1247 		rx_fifo1 = URE_RXFIFO_THR2_FULL;
1248 		rx_fifo2 = URE_RXFIFO_THR3_FULL;
1249 	} else {
1250 		rx_fifo1 = URE_RXFIFO_THR2_HIGH;
1251 		rx_fifo2 = URE_RXFIFO_THR3_HIGH;
1252 	}
1253 	ure_write_4(sc, URE_PLA_RXFIFO_CTRL1, URE_MCU_TYPE_PLA, rx_fifo1);
1254 	ure_write_4(sc, URE_PLA_RXFIFO_CTRL2, URE_MCU_TYPE_PLA, rx_fifo2);
1255 
1256 	/* Configure Tx FIFO threshold. */
1257 	ure_write_4(sc, URE_PLA_TXFIFO_CTRL, URE_MCU_TYPE_PLA,
1258 	    URE_TXFIFO_THR_NORMAL);
1259 }
1260