xref: /freebsd/sys/dev/usb/net/if_ure.c (revision 076ad2f836d5f49dc1375f1677335a48fe0d4b82)
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(REALTEK, RTL8152, URE_FLAG_8152),
71 	URE_DEV(REALTEK, RTL8153, 0),
72 #undef URE_DEV
73 };
74 
75 static device_probe_t ure_probe;
76 static device_attach_t ure_attach;
77 static device_detach_t ure_detach;
78 
79 static usb_callback_t ure_bulk_read_callback;
80 static usb_callback_t ure_bulk_write_callback;
81 
82 static miibus_readreg_t ure_miibus_readreg;
83 static miibus_writereg_t ure_miibus_writereg;
84 static miibus_statchg_t ure_miibus_statchg;
85 
86 static uether_fn_t ure_attach_post;
87 static uether_fn_t ure_init;
88 static uether_fn_t ure_stop;
89 static uether_fn_t ure_start;
90 static uether_fn_t ure_tick;
91 static uether_fn_t ure_rxfilter;
92 
93 static int	ure_ctl(struct ure_softc *, uint8_t, uint16_t, uint16_t,
94 		    void *, int);
95 static int	ure_read_mem(struct ure_softc *, uint16_t, uint16_t, void *,
96 		    int);
97 static int	ure_write_mem(struct ure_softc *, uint16_t, uint16_t, void *,
98 		    int);
99 static uint8_t	ure_read_1(struct ure_softc *, uint16_t, uint16_t);
100 static uint16_t	ure_read_2(struct ure_softc *, uint16_t, uint16_t);
101 static uint32_t	ure_read_4(struct ure_softc *, uint16_t, uint16_t);
102 static int	ure_write_1(struct ure_softc *, uint16_t, uint16_t, uint32_t);
103 static int	ure_write_2(struct ure_softc *, uint16_t, uint16_t, uint32_t);
104 static int	ure_write_4(struct ure_softc *, uint16_t, uint16_t, uint32_t);
105 static uint16_t	ure_ocp_reg_read(struct ure_softc *, uint16_t);
106 static void	ure_ocp_reg_write(struct ure_softc *, uint16_t, uint16_t);
107 
108 static void	ure_read_chipver(struct ure_softc *);
109 static int	ure_attach_post_sub(struct usb_ether *);
110 static void	ure_reset(struct ure_softc *);
111 static int	ure_ifmedia_upd(struct ifnet *);
112 static void	ure_ifmedia_sts(struct ifnet *, struct ifmediareq *);
113 static int	ure_ioctl(struct ifnet *, u_long, caddr_t);
114 static void	ure_rtl8152_init(struct ure_softc *);
115 static void	ure_rtl8153_init(struct ure_softc *);
116 static void	ure_disable_teredo(struct ure_softc *);
117 static void	ure_init_fifo(struct ure_softc *);
118 
119 static const struct usb_config ure_config[URE_N_TRANSFER] = {
120 	[URE_BULK_DT_WR] = {
121 		.type = UE_BULK,
122 		.endpoint = UE_ADDR_ANY,
123 		.direction = UE_DIR_OUT,
124 		.bufsize = MCLBYTES,
125 		.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
126 		.callback = ure_bulk_write_callback,
127 		.timeout = 10000,	/* 10 seconds */
128 	},
129 	[URE_BULK_DT_RD] = {
130 		.type = UE_BULK,
131 		.endpoint = UE_ADDR_ANY,
132 		.direction = UE_DIR_IN,
133 		.bufsize = 16384,
134 		.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
135 		.callback = ure_bulk_read_callback,
136 		.timeout = 0,	/* no timeout */
137 	},
138 };
139 
140 static device_method_t ure_methods[] = {
141 	/* Device interface. */
142 	DEVMETHOD(device_probe, ure_probe),
143 	DEVMETHOD(device_attach, ure_attach),
144 	DEVMETHOD(device_detach, ure_detach),
145 
146 	/* MII interface. */
147 	DEVMETHOD(miibus_readreg, ure_miibus_readreg),
148 	DEVMETHOD(miibus_writereg, ure_miibus_writereg),
149 	DEVMETHOD(miibus_statchg, ure_miibus_statchg),
150 
151 	DEVMETHOD_END
152 };
153 
154 static driver_t ure_driver = {
155 	.name = "ure",
156 	.methods = ure_methods,
157 	.size = sizeof(struct ure_softc),
158 };
159 
160 static devclass_t ure_devclass;
161 
162 DRIVER_MODULE(ure, uhub, ure_driver, ure_devclass, NULL, NULL);
163 DRIVER_MODULE(miibus, ure, miibus_driver, miibus_devclass, NULL, NULL);
164 MODULE_DEPEND(ure, uether, 1, 1, 1);
165 MODULE_DEPEND(ure, usb, 1, 1, 1);
166 MODULE_DEPEND(ure, ether, 1, 1, 1);
167 MODULE_DEPEND(ure, miibus, 1, 1, 1);
168 MODULE_VERSION(ure, 1);
169 
170 static const struct usb_ether_methods ure_ue_methods = {
171 	.ue_attach_post = ure_attach_post,
172 	.ue_attach_post_sub = ure_attach_post_sub,
173 	.ue_start = ure_start,
174 	.ue_init = ure_init,
175 	.ue_stop = ure_stop,
176 	.ue_tick = ure_tick,
177 	.ue_setmulti = ure_rxfilter,
178 	.ue_setpromisc = ure_rxfilter,
179 	.ue_mii_upd = ure_ifmedia_upd,
180 	.ue_mii_sts = ure_ifmedia_sts,
181 };
182 
183 static int
184 ure_ctl(struct ure_softc *sc, uint8_t rw, uint16_t val, uint16_t index,
185     void *buf, int len)
186 {
187 	struct usb_device_request req;
188 
189 	URE_LOCK_ASSERT(sc, MA_OWNED);
190 
191 	if (rw == URE_CTL_WRITE)
192 		req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
193 	else
194 		req.bmRequestType = UT_READ_VENDOR_DEVICE;
195 	req.bRequest = UR_SET_ADDRESS;
196 	USETW(req.wValue, val);
197 	USETW(req.wIndex, index);
198 	USETW(req.wLength, len);
199 
200 	return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
201 }
202 
203 static int
204 ure_read_mem(struct ure_softc *sc, uint16_t addr, uint16_t index,
205     void *buf, int len)
206 {
207 
208 	return (ure_ctl(sc, URE_CTL_READ, addr, index, buf, len));
209 }
210 
211 static int
212 ure_write_mem(struct ure_softc *sc, uint16_t addr, uint16_t index,
213     void *buf, int len)
214 {
215 
216 	return (ure_ctl(sc, URE_CTL_WRITE, addr, index, buf, len));
217 }
218 
219 static uint8_t
220 ure_read_1(struct ure_softc *sc, uint16_t reg, uint16_t index)
221 {
222 	uint32_t val;
223 	uint8_t temp[4];
224 	uint8_t shift;
225 
226 	shift = (reg & 3) << 3;
227 	reg &= ~3;
228 
229 	ure_read_mem(sc, reg, index, &temp, 4);
230 	val = UGETDW(temp);
231 	val >>= shift;
232 
233 	return (val & 0xff);
234 }
235 
236 static uint16_t
237 ure_read_2(struct ure_softc *sc, uint16_t reg, uint16_t index)
238 {
239 	uint32_t val;
240 	uint8_t temp[4];
241 	uint8_t shift;
242 
243 	shift = (reg & 2) << 3;
244 	reg &= ~3;
245 
246 	ure_read_mem(sc, reg, index, &temp, 4);
247 	val = UGETDW(temp);
248 	val >>= shift;
249 
250 	return (val & 0xffff);
251 }
252 
253 static uint32_t
254 ure_read_4(struct ure_softc *sc, uint16_t reg, uint16_t index)
255 {
256 	uint8_t temp[4];
257 
258 	ure_read_mem(sc, reg, index, &temp, 4);
259 	return (UGETDW(temp));
260 }
261 
262 static int
263 ure_write_1(struct ure_softc *sc, uint16_t reg, uint16_t index, uint32_t val)
264 {
265 	uint16_t byen;
266 	uint8_t temp[4];
267 	uint8_t shift;
268 
269 	byen = URE_BYTE_EN_BYTE;
270 	shift = reg & 3;
271 	val &= 0xff;
272 
273 	if (reg & 3) {
274 		byen <<= shift;
275 		val <<= (shift << 3);
276 		reg &= ~3;
277 	}
278 
279 	USETDW(temp, val);
280 	return (ure_write_mem(sc, reg, index | byen, &temp, 4));
281 }
282 
283 static int
284 ure_write_2(struct ure_softc *sc, uint16_t reg, uint16_t index, uint32_t val)
285 {
286 	uint16_t byen;
287 	uint8_t temp[4];
288 	uint8_t shift;
289 
290 	byen = URE_BYTE_EN_WORD;
291 	shift = reg & 2;
292 	val &= 0xffff;
293 
294 	if (reg & 2) {
295 		byen <<= shift;
296 		val <<= (shift << 3);
297 		reg &= ~3;
298 	}
299 
300 	USETDW(temp, val);
301 	return (ure_write_mem(sc, reg, index | byen, &temp, 4));
302 }
303 
304 static int
305 ure_write_4(struct ure_softc *sc, uint16_t reg, uint16_t index, uint32_t val)
306 {
307 	uint8_t temp[4];
308 
309 	USETDW(temp, val);
310 	return (ure_write_mem(sc, reg, index | URE_BYTE_EN_DWORD, &temp, 4));
311 }
312 
313 static uint16_t
314 ure_ocp_reg_read(struct ure_softc *sc, uint16_t addr)
315 {
316 	uint16_t reg;
317 
318 	ure_write_2(sc, URE_PLA_OCP_GPHY_BASE, URE_MCU_TYPE_PLA, addr & 0xf000);
319 	reg = (addr & 0x0fff) | 0xb000;
320 
321 	return (ure_read_2(sc, reg, URE_MCU_TYPE_PLA));
322 }
323 
324 static void
325 ure_ocp_reg_write(struct ure_softc *sc, uint16_t addr, uint16_t data)
326 {
327 	uint16_t reg;
328 
329 	ure_write_2(sc, URE_PLA_OCP_GPHY_BASE, URE_MCU_TYPE_PLA, addr & 0xf000);
330 	reg = (addr & 0x0fff) | 0xb000;
331 
332 	ure_write_2(sc, reg, URE_MCU_TYPE_PLA, data);
333 }
334 
335 static int
336 ure_miibus_readreg(device_t dev, int phy, int reg)
337 {
338 	struct ure_softc *sc;
339 	uint16_t val;
340 	int locked;
341 
342 	sc = device_get_softc(dev);
343 	locked = mtx_owned(&sc->sc_mtx);
344 	if (!locked)
345 		URE_LOCK(sc);
346 
347 	/* Let the rgephy driver read the URE_GMEDIASTAT register. */
348 	if (reg == URE_GMEDIASTAT) {
349 		if (!locked)
350 			URE_UNLOCK(sc);
351 		return (ure_read_1(sc, URE_GMEDIASTAT, URE_MCU_TYPE_PLA));
352 	}
353 
354 	val = ure_ocp_reg_read(sc, URE_OCP_BASE_MII + reg * 2);
355 
356 	if (!locked)
357 		URE_UNLOCK(sc);
358 	return (val);
359 }
360 
361 static int
362 ure_miibus_writereg(device_t dev, int phy, int reg, int val)
363 {
364 	struct ure_softc *sc;
365 	int locked;
366 
367 	sc = device_get_softc(dev);
368 	if (sc->sc_phyno != phy)
369 		return (0);
370 
371 	locked = mtx_owned(&sc->sc_mtx);
372 	if (!locked)
373 		URE_LOCK(sc);
374 
375 	ure_ocp_reg_write(sc, URE_OCP_BASE_MII + reg * 2, val);
376 
377 	if (!locked)
378 		URE_UNLOCK(sc);
379 	return (0);
380 }
381 
382 static void
383 ure_miibus_statchg(device_t dev)
384 {
385 	struct ure_softc *sc;
386 	struct mii_data *mii;
387 	struct ifnet *ifp;
388 	int locked;
389 
390 	sc = device_get_softc(dev);
391 	mii = GET_MII(sc);
392 	locked = mtx_owned(&sc->sc_mtx);
393 	if (!locked)
394 		URE_LOCK(sc);
395 
396 	ifp = uether_getifp(&sc->sc_ue);
397 	if (mii == NULL || ifp == NULL ||
398 	    (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
399 		goto done;
400 
401 	sc->sc_flags &= ~URE_FLAG_LINK;
402 	if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
403 	    (IFM_ACTIVE | IFM_AVALID)) {
404 		switch (IFM_SUBTYPE(mii->mii_media_active)) {
405 		case IFM_10_T:
406 		case IFM_100_TX:
407 			sc->sc_flags |= URE_FLAG_LINK;
408 			break;
409 		case IFM_1000_T:
410 			if ((sc->sc_flags & URE_FLAG_8152) != 0)
411 				break;
412 			sc->sc_flags |= URE_FLAG_LINK;
413 			break;
414 		default:
415 			break;
416 		}
417 	}
418 
419 	/* Lost link, do nothing. */
420 	if ((sc->sc_flags & URE_FLAG_LINK) == 0)
421 		goto done;
422 done:
423 	if (!locked)
424 		URE_UNLOCK(sc);
425 }
426 
427 /*
428  * Probe for a RTL8152/RTL8153 chip.
429  */
430 static int
431 ure_probe(device_t dev)
432 {
433 	struct usb_attach_arg *uaa;
434 
435 	uaa = device_get_ivars(dev);
436 	if (uaa->usb_mode != USB_MODE_HOST)
437 		return (ENXIO);
438 	if (uaa->info.bConfigIndex != URE_CONFIG_IDX)
439 		return (ENXIO);
440 	if (uaa->info.bIfaceIndex != URE_IFACE_IDX)
441 		return (ENXIO);
442 
443 	return (usbd_lookup_id_by_uaa(ure_devs, sizeof(ure_devs), uaa));
444 }
445 
446 /*
447  * Attach the interface. Allocate softc structures, do ifmedia
448  * setup and ethernet/BPF attach.
449  */
450 static int
451 ure_attach(device_t dev)
452 {
453 	struct usb_attach_arg *uaa = device_get_ivars(dev);
454 	struct ure_softc *sc = device_get_softc(dev);
455 	struct usb_ether *ue = &sc->sc_ue;
456 	uint8_t iface_index;
457 	int error;
458 
459 	sc->sc_flags = USB_GET_DRIVER_INFO(uaa);
460 	device_set_usb_desc(dev);
461 	mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
462 
463 	iface_index = URE_IFACE_IDX;
464 	error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
465 	    ure_config, URE_N_TRANSFER, sc, &sc->sc_mtx);
466 	if (error != 0) {
467 		device_printf(dev, "allocating USB transfers failed\n");
468 		goto detach;
469 	}
470 
471 	ue->ue_sc = sc;
472 	ue->ue_dev = dev;
473 	ue->ue_udev = uaa->device;
474 	ue->ue_mtx = &sc->sc_mtx;
475 	ue->ue_methods = &ure_ue_methods;
476 
477 	error = uether_ifattach(ue);
478 	if (error != 0) {
479 		device_printf(dev, "could not attach interface\n");
480 		goto detach;
481 	}
482 	return (0);			/* success */
483 
484 detach:
485 	ure_detach(dev);
486 	return (ENXIO);			/* failure */
487 }
488 
489 static int
490 ure_detach(device_t dev)
491 {
492 	struct ure_softc *sc = device_get_softc(dev);
493 	struct usb_ether *ue = &sc->sc_ue;
494 
495 	usbd_transfer_unsetup(sc->sc_xfer, URE_N_TRANSFER);
496 	uether_ifdetach(ue);
497 	mtx_destroy(&sc->sc_mtx);
498 
499 	return (0);
500 }
501 
502 static void
503 ure_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
504 {
505 	struct ure_softc *sc = usbd_xfer_softc(xfer);
506 	struct usb_ether *ue = &sc->sc_ue;
507 	struct ifnet *ifp = uether_getifp(ue);
508 	struct usb_page_cache *pc;
509 	struct ure_rxpkt pkt;
510 	int actlen, len;
511 
512 	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
513 
514 	switch (USB_GET_STATE(xfer)) {
515 	case USB_ST_TRANSFERRED:
516 		if (actlen < (int)(sizeof(pkt))) {
517 			if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
518 			goto tr_setup;
519 		}
520 		pc = usbd_xfer_get_frame(xfer, 0);
521 		usbd_copy_out(pc, 0, &pkt, sizeof(pkt));
522 		len = le32toh(pkt.ure_pktlen) & URE_RXPKT_LEN_MASK;
523 		len -= ETHER_CRC_LEN;
524 		if (actlen < (int)(len + sizeof(pkt))) {
525 			if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
526 			goto tr_setup;
527 		}
528 
529 		uether_rxbuf(ue, pc, sizeof(pkt), len);
530 		/* FALLTHROUGH */
531 	case USB_ST_SETUP:
532 tr_setup:
533 		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
534 		usbd_transfer_submit(xfer);
535 		uether_rxflush(ue);
536 		return;
537 
538 	default:			/* Error */
539 		DPRINTF("bulk read error, %s\n",
540 		    usbd_errstr(error));
541 
542 		if (error != USB_ERR_CANCELLED) {
543 			/* try to clear stall first */
544 			usbd_xfer_set_stall(xfer);
545 			goto tr_setup;
546 		}
547 		return;
548 	}
549 }
550 
551 static void
552 ure_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
553 {
554 	struct ure_softc *sc = usbd_xfer_softc(xfer);
555 	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
556 	struct usb_page_cache *pc;
557 	struct mbuf *m;
558 	struct ure_txpkt txpkt;
559 	int len, pos;
560 
561 	switch (USB_GET_STATE(xfer)) {
562 	case USB_ST_TRANSFERRED:
563 		DPRINTFN(11, "transfer complete\n");
564 		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
565 		/* FALLTHROUGH */
566 	case USB_ST_SETUP:
567 tr_setup:
568 		if ((sc->sc_flags & URE_FLAG_LINK) == 0 ||
569 		    (ifp->if_drv_flags & IFF_DRV_OACTIVE) != 0) {
570 			/*
571 			 * don't send anything if there is no link !
572 			 */
573 			return;
574 		}
575 		IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
576 		if (m == NULL)
577 			break;
578 		pos = 0;
579 		len = m->m_pkthdr.len;
580 		pc = usbd_xfer_get_frame(xfer, 0);
581 		memset(&txpkt, 0, sizeof(txpkt));
582 		txpkt.ure_pktlen = htole32((len & URE_TXPKT_LEN_MASK) |
583 		    URE_TKPKT_TX_FS | URE_TKPKT_TX_LS);
584 		usbd_copy_in(pc, pos, &txpkt, sizeof(txpkt));
585 		pos += sizeof(txpkt);
586 		usbd_m_copy_in(pc, pos, m, 0, m->m_pkthdr.len);
587 		pos += m->m_pkthdr.len;
588 
589 		if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
590 
591 		/*
592 		 * If there's a BPF listener, bounce a copy
593 		 * of this frame to him.
594 		 */
595 		BPF_MTAP(ifp, m);
596 
597 		m_freem(m);
598 
599 		/* Set frame length. */
600 		usbd_xfer_set_frame_len(xfer, 0, pos);
601 
602 		usbd_transfer_submit(xfer);
603 		ifp->if_drv_flags |= IFF_DRV_OACTIVE;
604 		return;
605 	default:			/* Error */
606 		DPRINTFN(11, "transfer error, %s\n",
607 		    usbd_errstr(error));
608 
609 		if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
610 		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
611 
612 		if (error != USB_ERR_CANCELLED) {
613 			/* try to clear stall first */
614 			usbd_xfer_set_stall(xfer);
615 			goto tr_setup;
616 		}
617 		return;
618 	}
619 }
620 
621 static void
622 ure_read_chipver(struct ure_softc *sc)
623 {
624 	uint16_t ver;
625 
626 	ver = ure_read_2(sc, URE_PLA_TCR1, URE_MCU_TYPE_PLA) & URE_VERSION_MASK;
627 	switch (ver) {
628 	case 0x4c00:
629 		sc->sc_chip |= URE_CHIP_VER_4C00;
630 		break;
631 	case 0x4c10:
632 		sc->sc_chip |= URE_CHIP_VER_4C10;
633 		break;
634 	case 0x5c00:
635 		sc->sc_chip |= URE_CHIP_VER_5C00;
636 		break;
637 	case 0x5c10:
638 		sc->sc_chip |= URE_CHIP_VER_5C10;
639 		break;
640 	case 0x5c20:
641 		sc->sc_chip |= URE_CHIP_VER_5C20;
642 		break;
643 	case 0x5c30:
644 		sc->sc_chip |= URE_CHIP_VER_5C30;
645 		break;
646 	default:
647 		device_printf(sc->sc_ue.ue_dev,
648 		    "unknown version 0x%04x\n", ver);
649 		break;
650 	}
651 }
652 
653 static void
654 ure_attach_post(struct usb_ether *ue)
655 {
656 	struct ure_softc *sc = uether_getsc(ue);
657 
658 	sc->sc_phyno = 0;
659 
660 	/* Determine the chip version. */
661 	ure_read_chipver(sc);
662 
663 	/* Initialize controller and get station address. */
664 	if (sc->sc_flags & URE_FLAG_8152)
665 		ure_rtl8152_init(sc);
666 	else
667 		ure_rtl8153_init(sc);
668 
669 	if (sc->sc_chip & URE_CHIP_VER_4C00)
670 		ure_read_mem(sc, URE_PLA_IDR, URE_MCU_TYPE_PLA,
671 		    ue->ue_eaddr, 8);
672 	else
673 		ure_read_mem(sc, URE_PLA_BACKUP, URE_MCU_TYPE_PLA,
674 		    ue->ue_eaddr, 8);
675 }
676 
677 static int
678 ure_attach_post_sub(struct usb_ether *ue)
679 {
680 	struct ure_softc *sc;
681 	struct ifnet *ifp;
682 	int error;
683 
684 	sc = uether_getsc(ue);
685 	ifp = ue->ue_ifp;
686 	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
687 	ifp->if_start = uether_start;
688 	ifp->if_ioctl = ure_ioctl;
689 	ifp->if_init = uether_init;
690 	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
691 	ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
692 	IFQ_SET_READY(&ifp->if_snd);
693 
694 	mtx_lock(&Giant);
695 	error = mii_attach(ue->ue_dev, &ue->ue_miibus, ifp,
696 	    uether_ifmedia_upd, ue->ue_methods->ue_mii_sts,
697 	    BMSR_DEFCAPMASK, sc->sc_phyno, MII_OFFSET_ANY, 0);
698 	mtx_unlock(&Giant);
699 
700 	return (error);
701 }
702 
703 static void
704 ure_init(struct usb_ether *ue)
705 {
706 	struct ure_softc *sc = uether_getsc(ue);
707 	struct ifnet *ifp = uether_getifp(ue);
708 
709 	URE_LOCK_ASSERT(sc, MA_OWNED);
710 
711 	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
712 		return;
713 
714 	/* Cancel pending I/O. */
715 	ure_stop(ue);
716 
717 	ure_reset(sc);
718 
719 	/* Set MAC address. */
720 	ure_write_mem(sc, URE_PLA_IDR, URE_MCU_TYPE_PLA | URE_BYTE_EN_SIX_BYTES,
721 	    IF_LLADDR(ifp), 8);
722 
723 	/* Reset the packet filter. */
724 	ure_write_2(sc, URE_PLA_FMC, URE_MCU_TYPE_PLA,
725 	    ure_read_2(sc, URE_PLA_FMC, URE_MCU_TYPE_PLA) &
726 	    ~URE_FMC_FCR_MCU_EN);
727 	ure_write_2(sc, URE_PLA_FMC, URE_MCU_TYPE_PLA,
728 	    ure_read_2(sc, URE_PLA_FMC, URE_MCU_TYPE_PLA) |
729 	    URE_FMC_FCR_MCU_EN);
730 
731 	/* Enable transmit and receive. */
732 	ure_write_1(sc, URE_PLA_CR, URE_MCU_TYPE_PLA,
733 	    ure_read_1(sc, URE_PLA_CR, URE_MCU_TYPE_PLA) | URE_CR_RE |
734 	    URE_CR_TE);
735 
736 	ure_write_2(sc, URE_PLA_MISC_1, URE_MCU_TYPE_PLA,
737 	    ure_read_2(sc, URE_PLA_MISC_1, URE_MCU_TYPE_PLA) &
738 	    ~URE_RXDY_GATED_EN);
739 
740 	/*  Configure RX filters. */
741 	ure_rxfilter(ue);
742 
743 	usbd_xfer_set_stall(sc->sc_xfer[URE_BULK_DT_WR]);
744 
745 	/* Indicate we are up and running. */
746 	ifp->if_drv_flags |= IFF_DRV_RUNNING;
747 
748 	/* Switch to selected media. */
749 	ure_ifmedia_upd(ifp);
750 }
751 
752 static void
753 ure_tick(struct usb_ether *ue)
754 {
755 	struct ure_softc *sc = uether_getsc(ue);
756 	struct mii_data *mii = GET_MII(sc);
757 
758 	URE_LOCK_ASSERT(sc, MA_OWNED);
759 
760 	mii_tick(mii);
761 	if ((sc->sc_flags & URE_FLAG_LINK) == 0
762 	    && mii->mii_media_status & IFM_ACTIVE &&
763 	    IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
764 		sc->sc_flags |= URE_FLAG_LINK;
765 		ure_start(ue);
766 	}
767 }
768 
769 /*
770  * Program the 64-bit multicast hash filter.
771  */
772 static void
773 ure_rxfilter(struct usb_ether *ue)
774 {
775 	struct ure_softc *sc = uether_getsc(ue);
776 	struct ifnet *ifp = uether_getifp(ue);
777 	struct ifmultiaddr *ifma;
778 	uint32_t h, rxmode;
779 	uint32_t hashes[2] = { 0, 0 };
780 
781 	URE_LOCK_ASSERT(sc, MA_OWNED);
782 
783 	rxmode = URE_RCR_APM;
784 	if (ifp->if_flags & IFF_BROADCAST)
785 		 rxmode |= URE_RCR_AB;
786 	if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
787 		if (ifp->if_flags & IFF_PROMISC)
788 			rxmode |= URE_RCR_AAP;
789 		rxmode |= URE_RCR_AM;
790 		hashes[0] = hashes[1] = 0xffffffff;
791 		goto done;
792 	}
793 
794 	rxmode |= URE_RCR_AM;
795 	if_maddr_rlock(ifp);
796 	TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
797 		if (ifma->ifma_addr->sa_family != AF_LINK)
798 			continue;
799 		h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
800 		ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
801 		if (h < 32)
802 			hashes[0] |= (1 << h);
803 		else
804 			hashes[1] |= (1 << (h - 32));
805 	}
806 	if_maddr_runlock(ifp);
807 
808 	h = bswap32(hashes[0]);
809 	hashes[0] = bswap32(hashes[1]);
810 	hashes[1] = h;
811 	rxmode |= URE_RCR_AM;
812 
813 done:
814 	ure_write_4(sc, URE_PLA_MAR0, URE_MCU_TYPE_PLA, hashes[0]);
815 	ure_write_4(sc, URE_PLA_MAR4, URE_MCU_TYPE_PLA, hashes[1]);
816 	ure_write_4(sc, URE_PLA_RCR, URE_MCU_TYPE_PLA, rxmode);
817 }
818 
819 static void
820 ure_start(struct usb_ether *ue)
821 {
822 	struct ure_softc *sc = uether_getsc(ue);
823 
824 	/*
825 	 * start the USB transfers, if not already started:
826 	 */
827 	usbd_transfer_start(sc->sc_xfer[URE_BULK_DT_RD]);
828 	usbd_transfer_start(sc->sc_xfer[URE_BULK_DT_WR]);
829 }
830 
831 static void
832 ure_reset(struct ure_softc *sc)
833 {
834 	int i;
835 
836 	ure_write_1(sc, URE_PLA_CR, URE_MCU_TYPE_PLA, URE_CR_RST);
837 
838 	for (i = 0; i < URE_TIMEOUT; i++) {
839 		if (!(ure_read_1(sc, URE_PLA_CR, URE_MCU_TYPE_PLA) &
840 		    URE_CR_RST))
841 			break;
842 		uether_pause(&sc->sc_ue, hz / 100);
843 	}
844 	if (i == URE_TIMEOUT)
845 		device_printf(sc->sc_ue.ue_dev, "reset never completed\n");
846 }
847 
848 /*
849  * Set media options.
850  */
851 static int
852 ure_ifmedia_upd(struct ifnet *ifp)
853 {
854 	struct ure_softc *sc = ifp->if_softc;
855 	struct mii_data *mii = GET_MII(sc);
856 	struct mii_softc *miisc;
857 	int error;
858 
859 	URE_LOCK_ASSERT(sc, MA_OWNED);
860 
861 	LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
862 		PHY_RESET(miisc);
863 	error = mii_mediachg(mii);
864 	return (error);
865 }
866 
867 /*
868  * Report current media status.
869  */
870 static void
871 ure_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
872 {
873 	struct ure_softc *sc;
874 	struct mii_data *mii;
875 
876 	sc = ifp->if_softc;
877 	mii = GET_MII(sc);
878 
879 	URE_LOCK(sc);
880 	mii_pollstat(mii);
881 	ifmr->ifm_active = mii->mii_media_active;
882 	ifmr->ifm_status = mii->mii_media_status;
883 	URE_UNLOCK(sc);
884 }
885 
886 static int
887 ure_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
888 {
889 	struct usb_ether *ue = ifp->if_softc;
890 	struct ure_softc *sc;
891 	struct ifreq *ifr;
892 	int error, mask, reinit;
893 
894 	sc = uether_getsc(ue);
895 	ifr = (struct ifreq *)data;
896 	error = 0;
897 	reinit = 0;
898 	if (cmd == SIOCSIFCAP) {
899 		URE_LOCK(sc);
900 		mask = ifr->ifr_reqcap ^ ifp->if_capenable;
901 		if (reinit > 0 && ifp->if_drv_flags & IFF_DRV_RUNNING)
902 			ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
903 		else
904 			reinit = 0;
905 		URE_UNLOCK(sc);
906 		if (reinit > 0)
907 			uether_init(ue);
908 	} else
909 		error = uether_ioctl(ifp, cmd, data);
910 
911 	return (error);
912 }
913 
914 static void
915 ure_rtl8152_init(struct ure_softc *sc)
916 {
917 	uint32_t pwrctrl;
918 
919 	/* Disable ALDPS. */
920 	ure_ocp_reg_write(sc, URE_OCP_ALDPS_CONFIG, URE_ENPDNPS | URE_LINKENA |
921 	    URE_DIS_SDSAVE);
922 	uether_pause(&sc->sc_ue, hz / 50);
923 
924 	if (sc->sc_chip & URE_CHIP_VER_4C00) {
925 		ure_write_2(sc, URE_PLA_LED_FEATURE, URE_MCU_TYPE_PLA,
926 		    ure_read_2(sc, URE_PLA_LED_FEATURE, URE_MCU_TYPE_PLA) &
927 		    ~URE_LED_MODE_MASK);
928 	}
929 
930 	ure_write_2(sc, URE_USB_UPS_CTRL, URE_MCU_TYPE_USB,
931 	    ure_read_2(sc, URE_USB_UPS_CTRL, URE_MCU_TYPE_USB) &
932 	    ~URE_POWER_CUT);
933 	ure_write_2(sc, URE_USB_PM_CTRL_STATUS, URE_MCU_TYPE_USB,
934 	    ure_read_2(sc, URE_USB_PM_CTRL_STATUS, URE_MCU_TYPE_USB) &
935 	    ~URE_RESUME_INDICATE);
936 
937 	ure_write_2(sc, URE_PLA_PHY_PWR, URE_MCU_TYPE_PLA,
938 	    ure_read_2(sc, URE_PLA_PHY_PWR, URE_MCU_TYPE_PLA) |
939 	    URE_TX_10M_IDLE_EN | URE_PFM_PWM_SWITCH);
940 	pwrctrl = ure_read_4(sc, URE_PLA_MAC_PWR_CTRL, URE_MCU_TYPE_PLA);
941 	pwrctrl &= ~URE_MCU_CLK_RATIO_MASK;
942 	pwrctrl |= URE_MCU_CLK_RATIO | URE_D3_CLK_GATED_EN;
943 	ure_write_4(sc, URE_PLA_MAC_PWR_CTRL, URE_MCU_TYPE_PLA, pwrctrl);
944 	ure_write_2(sc, URE_PLA_GPHY_INTR_IMR, URE_MCU_TYPE_PLA,
945 	    URE_GPHY_STS_MSK | URE_SPEED_DOWN_MSK | URE_SPDWN_RXDV_MSK |
946 	    URE_SPDWN_LINKCHG_MSK);
947 
948 	/* Disable Rx aggregation. */
949 	ure_write_2(sc, URE_USB_USB_CTRL, URE_MCU_TYPE_USB,
950 	    ure_read_2(sc, URE_USB_USB_CTRL, URE_MCU_TYPE_USB) |
951 	    URE_RX_AGG_DISABLE);
952 
953         /* Disable ALDPS. */
954 	ure_ocp_reg_write(sc, URE_OCP_ALDPS_CONFIG, URE_ENPDNPS | URE_LINKENA |
955 	    URE_DIS_SDSAVE);
956 	uether_pause(&sc->sc_ue, hz / 50);
957 
958 	ure_init_fifo(sc);
959 
960 	ure_write_1(sc, URE_USB_TX_AGG, URE_MCU_TYPE_USB,
961 	    URE_TX_AGG_MAX_THRESHOLD);
962 	ure_write_4(sc, URE_USB_RX_BUF_TH, URE_MCU_TYPE_USB, URE_RX_THR_HIGH);
963 	ure_write_4(sc, URE_USB_TX_DMA, URE_MCU_TYPE_USB,
964 	    URE_TEST_MODE_DISABLE | URE_TX_SIZE_ADJUST1);
965 }
966 
967 static void
968 ure_rtl8153_init(struct ure_softc *sc)
969 {
970 	uint16_t val;
971 	uint8_t u1u2[8];
972 	int i;
973 
974 	/* Disable ALDPS. */
975 	ure_ocp_reg_write(sc, URE_OCP_POWER_CFG,
976 	    ure_ocp_reg_read(sc, URE_OCP_POWER_CFG) & ~URE_EN_ALDPS);
977 	uether_pause(&sc->sc_ue, hz / 50);
978 
979 	memset(u1u2, 0x00, sizeof(u1u2));
980 	ure_write_mem(sc, URE_USB_TOLERANCE,
981 	    URE_MCU_TYPE_USB | URE_BYTE_EN_SIX_BYTES, u1u2, sizeof(u1u2));
982 
983         for (i = 0; i < URE_TIMEOUT; i++) {
984 		if (ure_read_2(sc, URE_PLA_BOOT_CTRL, URE_MCU_TYPE_PLA) &
985 		    URE_AUTOLOAD_DONE)
986 			break;
987 		uether_pause(&sc->sc_ue, hz / 100);
988 	}
989 	if (i == URE_TIMEOUT)
990 		device_printf(sc->sc_ue.ue_dev,
991 		    "timeout waiting for chip autoload\n");
992 
993         for (i = 0; i < URE_TIMEOUT; i++) {
994 		val = ure_ocp_reg_read(sc, URE_OCP_PHY_STATUS) &
995 		    URE_PHY_STAT_MASK;
996 		if (val == URE_PHY_STAT_LAN_ON || val == URE_PHY_STAT_PWRDN)
997 			break;
998 		uether_pause(&sc->sc_ue, hz / 100);
999 	}
1000 	if (i == URE_TIMEOUT)
1001 		device_printf(sc->sc_ue.ue_dev,
1002 		    "timeout waiting for phy to stabilize\n");
1003 
1004 	ure_write_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB,
1005 	    ure_read_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB) &
1006 	    ~URE_U2P3_ENABLE);
1007 
1008 	if (sc->sc_chip & URE_CHIP_VER_5C10) {
1009 		val = ure_read_2(sc, URE_USB_SSPHYLINK2, URE_MCU_TYPE_USB);
1010 		val &= ~URE_PWD_DN_SCALE_MASK;
1011 		val |= URE_PWD_DN_SCALE(96);
1012 		ure_write_2(sc, URE_USB_SSPHYLINK2, URE_MCU_TYPE_USB, val);
1013 
1014 		ure_write_1(sc, URE_USB_USB2PHY, URE_MCU_TYPE_USB,
1015 		    ure_read_1(sc, URE_USB_USB2PHY, URE_MCU_TYPE_USB) |
1016 		    URE_USB2PHY_L1 | URE_USB2PHY_SUSPEND);
1017 	} else if (sc->sc_chip & URE_CHIP_VER_5C20) {
1018 		ure_write_1(sc, URE_PLA_DMY_REG0, URE_MCU_TYPE_PLA,
1019 		    ure_read_1(sc, URE_PLA_DMY_REG0, URE_MCU_TYPE_PLA) &
1020 		    ~URE_ECM_ALDPS);
1021 	}
1022 	if (sc->sc_chip & (URE_CHIP_VER_5C20 | URE_CHIP_VER_5C30)) {
1023 		val = ure_read_1(sc, URE_USB_CSR_DUMMY1, URE_MCU_TYPE_USB);
1024 		if (ure_read_2(sc, URE_USB_BURST_SIZE, URE_MCU_TYPE_USB) ==
1025 		    0)
1026 			val &= ~URE_DYNAMIC_BURST;
1027 		else
1028 			val |= URE_DYNAMIC_BURST;
1029 		ure_write_1(sc, URE_USB_CSR_DUMMY1, URE_MCU_TYPE_USB, val);
1030 	}
1031 
1032 	ure_write_1(sc, URE_USB_CSR_DUMMY2, URE_MCU_TYPE_USB,
1033 	    ure_read_1(sc, URE_USB_CSR_DUMMY2, URE_MCU_TYPE_USB) |
1034 	    URE_EP4_FULL_FC);
1035 
1036 	ure_write_2(sc, URE_USB_WDT11_CTRL, URE_MCU_TYPE_USB,
1037 	    ure_read_2(sc, URE_USB_WDT11_CTRL, URE_MCU_TYPE_USB) &
1038 	    ~URE_TIMER11_EN);
1039 
1040 	ure_write_2(sc, URE_PLA_LED_FEATURE, URE_MCU_TYPE_PLA,
1041 	    ure_read_2(sc, URE_PLA_LED_FEATURE, URE_MCU_TYPE_PLA) &
1042 	    ~URE_LED_MODE_MASK);
1043 
1044 	if ((sc->sc_chip & URE_CHIP_VER_5C10) &&
1045 	    usbd_get_speed(sc->sc_ue.ue_udev) != USB_SPEED_SUPER)
1046 		val = URE_LPM_TIMER_500MS;
1047 	else
1048 		val = URE_LPM_TIMER_500US;
1049 	ure_write_1(sc, URE_USB_LPM_CTRL, URE_MCU_TYPE_USB,
1050 	    val | URE_FIFO_EMPTY_1FB | URE_ROK_EXIT_LPM);
1051 
1052 	val = ure_read_2(sc, URE_USB_AFE_CTRL2, URE_MCU_TYPE_USB);
1053 	val &= ~URE_SEN_VAL_MASK;
1054 	val |= URE_SEN_VAL_NORMAL | URE_SEL_RXIDLE;
1055 	ure_write_2(sc, URE_USB_AFE_CTRL2, URE_MCU_TYPE_USB, val);
1056 
1057 	ure_write_2(sc, URE_USB_CONNECT_TIMER, URE_MCU_TYPE_USB, 0x0001);
1058 
1059 	ure_write_2(sc, URE_USB_POWER_CUT, URE_MCU_TYPE_USB,
1060 	    ure_read_2(sc, URE_USB_POWER_CUT, URE_MCU_TYPE_USB) &
1061 	    ~(URE_PWR_EN | URE_PHASE2_EN));
1062 	ure_write_2(sc, URE_USB_MISC_0, URE_MCU_TYPE_USB,
1063 	    ure_read_2(sc, URE_USB_MISC_0, URE_MCU_TYPE_USB) &
1064 	    ~URE_PCUT_STATUS);
1065 
1066 	memset(u1u2, 0xff, sizeof(u1u2));
1067 	ure_write_mem(sc, URE_USB_TOLERANCE,
1068 	    URE_MCU_TYPE_USB | URE_BYTE_EN_SIX_BYTES, u1u2, sizeof(u1u2));
1069 
1070 	ure_write_2(sc, URE_PLA_MAC_PWR_CTRL, URE_MCU_TYPE_PLA,
1071 	    URE_ALDPS_SPDWN_RATIO);
1072 	ure_write_2(sc, URE_PLA_MAC_PWR_CTRL2, URE_MCU_TYPE_PLA,
1073 	    URE_EEE_SPDWN_RATIO);
1074 	ure_write_2(sc, URE_PLA_MAC_PWR_CTRL3, URE_MCU_TYPE_PLA,
1075 	    URE_PKT_AVAIL_SPDWN_EN | URE_SUSPEND_SPDWN_EN |
1076 	    URE_U1U2_SPDWN_EN | URE_L1_SPDWN_EN);
1077 	ure_write_2(sc, URE_PLA_MAC_PWR_CTRL4, URE_MCU_TYPE_PLA,
1078 	    URE_PWRSAVE_SPDWN_EN | URE_RXDV_SPDWN_EN | URE_TX10MIDLE_EN |
1079 	    URE_TP100_SPDWN_EN | URE_TP500_SPDWN_EN | URE_TP1000_SPDWN_EN |
1080 	    URE_EEE_SPDWN_EN);
1081 
1082 	val = ure_read_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB);
1083 	if (!(sc->sc_chip & (URE_CHIP_VER_5C00 | URE_CHIP_VER_5C10)))
1084 		val |= URE_U2P3_ENABLE;
1085 	else
1086 		val &= ~URE_U2P3_ENABLE;
1087 	ure_write_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB, val);
1088 
1089 	memset(u1u2, 0x00, sizeof(u1u2));
1090         ure_write_mem(sc, URE_USB_TOLERANCE,
1091 	    URE_MCU_TYPE_USB | URE_BYTE_EN_SIX_BYTES, u1u2, sizeof(u1u2));
1092 
1093 	/* Disable ALDPS. */
1094 	ure_ocp_reg_write(sc, URE_OCP_POWER_CFG,
1095 	    ure_ocp_reg_read(sc, URE_OCP_POWER_CFG) & ~URE_EN_ALDPS);
1096 	uether_pause(&sc->sc_ue, hz / 50);
1097 
1098 	ure_init_fifo(sc);
1099 
1100 	/* Disable Rx aggregation. */
1101 	ure_write_2(sc, URE_USB_USB_CTRL, URE_MCU_TYPE_USB,
1102 	    ure_read_2(sc, URE_USB_USB_CTRL, URE_MCU_TYPE_USB) |
1103 	    URE_RX_AGG_DISABLE);
1104 
1105 	val = ure_read_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB);
1106 	if (!(sc->sc_chip & (URE_CHIP_VER_5C00 | URE_CHIP_VER_5C10)))
1107 		val |= URE_U2P3_ENABLE;
1108 	else
1109 		val &= ~URE_U2P3_ENABLE;
1110 	ure_write_2(sc, URE_USB_U2P3_CTRL, URE_MCU_TYPE_USB, val);
1111 
1112 	memset(u1u2, 0xff, sizeof(u1u2));
1113 	ure_write_mem(sc, URE_USB_TOLERANCE,
1114 	    URE_MCU_TYPE_USB | URE_BYTE_EN_SIX_BYTES, u1u2, sizeof(u1u2));
1115 }
1116 
1117 static void
1118 ure_stop(struct usb_ether *ue)
1119 {
1120 	struct ure_softc *sc = uether_getsc(ue);
1121 	struct ifnet *ifp = uether_getifp(ue);
1122 
1123 	URE_LOCK_ASSERT(sc, MA_OWNED);
1124 
1125 	ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1126 	sc->sc_flags &= ~URE_FLAG_LINK;
1127 
1128 	/*
1129 	 * stop all the transfers, if not already stopped:
1130 	 */
1131 	usbd_transfer_stop(sc->sc_xfer[URE_BULK_DT_WR]);
1132 	usbd_transfer_stop(sc->sc_xfer[URE_BULK_DT_RD]);
1133 }
1134 
1135 static void
1136 ure_disable_teredo(struct ure_softc *sc)
1137 {
1138 
1139 	ure_write_4(sc, URE_PLA_TEREDO_CFG, URE_MCU_TYPE_PLA,
1140 	    ure_read_4(sc, URE_PLA_TEREDO_CFG, URE_MCU_TYPE_PLA) &
1141 	    ~(URE_TEREDO_SEL | URE_TEREDO_RS_EVENT_MASK | URE_OOB_TEREDO_EN));
1142 	ure_write_2(sc, URE_PLA_WDT6_CTRL, URE_MCU_TYPE_PLA,
1143 	    URE_WDT6_SET_MODE);
1144 	ure_write_2(sc, URE_PLA_REALWOW_TIMER, URE_MCU_TYPE_PLA, 0);
1145 	ure_write_4(sc, URE_PLA_TEREDO_TIMER, URE_MCU_TYPE_PLA, 0);
1146 }
1147 
1148 static void
1149 ure_init_fifo(struct ure_softc *sc)
1150 {
1151 	uint32_t rx_fifo1, rx_fifo2;
1152 	int i;
1153 
1154 	ure_write_2(sc, URE_PLA_MISC_1, URE_MCU_TYPE_PLA,
1155 	    ure_read_2(sc, URE_PLA_MISC_1, URE_MCU_TYPE_PLA) |
1156 	    URE_RXDY_GATED_EN);
1157 
1158 	ure_disable_teredo(sc);
1159 
1160 	ure_write_4(sc, URE_PLA_RCR, URE_MCU_TYPE_PLA,
1161 	    ure_read_4(sc, URE_PLA_RCR, URE_MCU_TYPE_PLA) &
1162 	    ~URE_RCR_ACPT_ALL);
1163 
1164 	if (!(sc->sc_flags & URE_FLAG_8152)) {
1165 		if (sc->sc_chip & (URE_CHIP_VER_5C00 | URE_CHIP_VER_5C10 |
1166 		    URE_CHIP_VER_5C20)) {
1167 				ure_ocp_reg_write(sc, URE_OCP_ADC_CFG,
1168 				    URE_CKADSEL_L | URE_ADC_EN | URE_EN_EMI_L);
1169 		}
1170 		if (sc->sc_chip & URE_CHIP_VER_5C00) {
1171 			ure_ocp_reg_write(sc, URE_OCP_EEE_CFG,
1172 			    ure_ocp_reg_read(sc, URE_OCP_EEE_CFG) &
1173 			    ~URE_CTAP_SHORT_EN);
1174 		}
1175 		ure_ocp_reg_write(sc, URE_OCP_POWER_CFG,
1176 		    ure_ocp_reg_read(sc, URE_OCP_POWER_CFG) |
1177 		    URE_EEE_CLKDIV_EN);
1178 		ure_ocp_reg_write(sc, URE_OCP_DOWN_SPEED,
1179 		    ure_ocp_reg_read(sc, URE_OCP_DOWN_SPEED) |
1180 		    URE_EN_10M_BGOFF);
1181 		ure_ocp_reg_write(sc, URE_OCP_POWER_CFG,
1182 		    ure_ocp_reg_read(sc, URE_OCP_POWER_CFG) |
1183 		    URE_EN_10M_PLLOFF);
1184 		ure_ocp_reg_write(sc, URE_OCP_SRAM_ADDR, URE_SRAM_IMPEDANCE);
1185 		ure_ocp_reg_write(sc, URE_OCP_SRAM_DATA, 0x0b13);
1186 		ure_write_2(sc, URE_PLA_PHY_PWR, URE_MCU_TYPE_PLA,
1187 		    ure_read_2(sc, URE_PLA_PHY_PWR, URE_MCU_TYPE_PLA) |
1188 		    URE_PFM_PWM_SWITCH);
1189 
1190 		/* Enable LPF corner auto tune. */
1191 		ure_ocp_reg_write(sc, URE_OCP_SRAM_ADDR, URE_SRAM_LPF_CFG);
1192 		ure_ocp_reg_write(sc, URE_OCP_SRAM_DATA, 0xf70f);
1193 
1194 		/* Adjust 10M amplitude. */
1195 		ure_ocp_reg_write(sc, URE_OCP_SRAM_ADDR, URE_SRAM_10M_AMP1);
1196 		ure_ocp_reg_write(sc, URE_OCP_SRAM_DATA, 0x00af);
1197 		ure_ocp_reg_write(sc, URE_OCP_SRAM_ADDR, URE_SRAM_10M_AMP2);
1198 		ure_ocp_reg_write(sc, URE_OCP_SRAM_DATA, 0x0208);
1199 	}
1200 
1201 	ure_reset(sc);
1202 
1203 	ure_write_1(sc, URE_PLA_CR, URE_MCU_TYPE_PLA, 0);
1204 
1205 	ure_write_1(sc, URE_PLA_OOB_CTRL, URE_MCU_TYPE_PLA,
1206 	    ure_read_1(sc, URE_PLA_OOB_CTRL, URE_MCU_TYPE_PLA) &
1207 	    ~URE_NOW_IS_OOB);
1208 
1209 	ure_write_2(sc, URE_PLA_SFF_STS_7, URE_MCU_TYPE_PLA,
1210 	    ure_read_2(sc, URE_PLA_SFF_STS_7, URE_MCU_TYPE_PLA) &
1211 	    ~URE_MCU_BORW_EN);
1212 	for (i = 0; i < URE_TIMEOUT; i++) {
1213 		if (ure_read_1(sc, URE_PLA_OOB_CTRL, URE_MCU_TYPE_PLA) &
1214 		    URE_LINK_LIST_READY)
1215 			break;
1216 		uether_pause(&sc->sc_ue, hz / 100);
1217 	}
1218 	if (i == URE_TIMEOUT)
1219 		device_printf(sc->sc_ue.ue_dev,
1220 		    "timeout waiting for OOB control\n");
1221 	ure_write_2(sc, URE_PLA_SFF_STS_7, URE_MCU_TYPE_PLA,
1222 	    ure_read_2(sc, URE_PLA_SFF_STS_7, URE_MCU_TYPE_PLA) |
1223 	    URE_RE_INIT_LL);
1224 	for (i = 0; i < URE_TIMEOUT; i++) {
1225 		if (ure_read_1(sc, URE_PLA_OOB_CTRL, URE_MCU_TYPE_PLA) &
1226 		    URE_LINK_LIST_READY)
1227 			break;
1228 		uether_pause(&sc->sc_ue, hz / 100);
1229 	}
1230 	if (i == URE_TIMEOUT)
1231 		device_printf(sc->sc_ue.ue_dev,
1232 		    "timeout waiting for OOB control\n");
1233 
1234 	ure_write_2(sc, URE_PLA_CPCR, URE_MCU_TYPE_PLA,
1235 	    ure_read_2(sc, URE_PLA_CPCR, URE_MCU_TYPE_PLA) &
1236 	    ~URE_CPCR_RX_VLAN);
1237 	ure_write_2(sc, URE_PLA_TCR0, URE_MCU_TYPE_PLA,
1238 	    ure_read_2(sc, URE_PLA_TCR0, URE_MCU_TYPE_PLA) |
1239 	    URE_TCR0_AUTO_FIFO);
1240 
1241 	/* Configure Rx FIFO threshold. */
1242 	ure_write_4(sc, URE_PLA_RXFIFO_CTRL0, URE_MCU_TYPE_PLA,
1243 	    URE_RXFIFO_THR1_NORMAL);
1244 	if (usbd_get_speed(sc->sc_ue.ue_udev) == USB_SPEED_FULL) {
1245 		rx_fifo1 = URE_RXFIFO_THR2_FULL;
1246 		rx_fifo2 = URE_RXFIFO_THR3_FULL;
1247 	} else {
1248 		rx_fifo1 = URE_RXFIFO_THR2_HIGH;
1249 		rx_fifo2 = URE_RXFIFO_THR3_HIGH;
1250 	}
1251 	ure_write_4(sc, URE_PLA_RXFIFO_CTRL1, URE_MCU_TYPE_PLA, rx_fifo1);
1252 	ure_write_4(sc, URE_PLA_RXFIFO_CTRL2, URE_MCU_TYPE_PLA, rx_fifo2);
1253 
1254 	/* Configure Tx FIFO threshold. */
1255 	ure_write_4(sc, URE_PLA_TXFIFO_CTRL, URE_MCU_TYPE_PLA,
1256 	    URE_TXFIFO_THR_NORMAL);
1257 }
1258