1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1997, 1998, 1999, 2000
5 *	Bill Paul <wpaul@ee.columbia.edu>.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD$");
37
38/*
39 * CATC USB-EL1210A USB to ethernet driver. Used in the CATC Netmate
40 * adapters and others.
41 *
42 * Written by Bill Paul <wpaul@ee.columbia.edu>
43 * Electrical Engineering Department
44 * Columbia University, New York City
45 */
46
47/*
48 * The CATC USB-EL1210A provides USB ethernet support at 10Mbps. The
49 * RX filter uses a 512-bit multicast hash table, single perfect entry
50 * for the station address, and promiscuous mode. Unlike the ADMtek
51 * and KLSI chips, the CATC ASIC supports read and write combining
52 * mode where multiple packets can be transferred using a single bulk
53 * transaction, which helps performance a great deal.
54 */
55
56#include <sys/stdint.h>
57#include <sys/stddef.h>
58#include <sys/param.h>
59#include <sys/queue.h>
60#include <sys/types.h>
61#include <sys/systm.h>
62#include <sys/socket.h>
63#include <sys/kernel.h>
64#include <sys/bus.h>
65#include <sys/module.h>
66#include <sys/lock.h>
67#include <sys/mutex.h>
68#include <sys/condvar.h>
69#include <sys/sysctl.h>
70#include <sys/sx.h>
71#include <sys/unistd.h>
72#include <sys/callout.h>
73#include <sys/malloc.h>
74#include <sys/priv.h>
75
76#include <net/if.h>
77#include <net/if_var.h>
78
79#include <dev/usb/usb.h>
80#include <dev/usb/usbdi.h>
81#include <dev/usb/usbdi_util.h>
82#include "usbdevs.h"
83
84#define	USB_DEBUG_VAR cue_debug
85#include <dev/usb/usb_debug.h>
86#include <dev/usb/usb_process.h>
87
88#include <dev/usb/net/usb_ethernet.h>
89#include <dev/usb/net/if_cuereg.h>
90
91/*
92 * Various supported device vendors/products.
93 */
94
95/* Belkin F5U111 adapter covered by NETMATE entry */
96
97static const STRUCT_USB_HOST_ID cue_devs[] = {
98#define	CUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
99	CUE_DEV(CATC, NETMATE),
100	CUE_DEV(CATC, NETMATE2),
101	CUE_DEV(SMARTBRIDGES, SMARTLINK),
102#undef CUE_DEV
103};
104
105/* prototypes */
106
107static device_probe_t cue_probe;
108static device_attach_t cue_attach;
109static device_detach_t cue_detach;
110
111static usb_callback_t cue_bulk_read_callback;
112static usb_callback_t cue_bulk_write_callback;
113
114static uether_fn_t cue_attach_post;
115static uether_fn_t cue_init;
116static uether_fn_t cue_stop;
117static uether_fn_t cue_start;
118static uether_fn_t cue_tick;
119static uether_fn_t cue_setmulti;
120static uether_fn_t cue_setpromisc;
121
122static uint8_t	cue_csr_read_1(struct cue_softc *, uint16_t);
123static uint16_t	cue_csr_read_2(struct cue_softc *, uint8_t);
124static int	cue_csr_write_1(struct cue_softc *, uint16_t, uint16_t);
125static int	cue_mem(struct cue_softc *, uint8_t, uint16_t, void *, int);
126static int	cue_getmac(struct cue_softc *, void *);
127static uint32_t	cue_mchash(const uint8_t *);
128static void	cue_reset(struct cue_softc *);
129
130#ifdef USB_DEBUG
131static int cue_debug = 0;
132
133static SYSCTL_NODE(_hw_usb, OID_AUTO, cue, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
134    "USB cue");
135SYSCTL_INT(_hw_usb_cue, OID_AUTO, debug, CTLFLAG_RWTUN, &cue_debug, 0,
136    "Debug level");
137#endif
138
139static const struct usb_config cue_config[CUE_N_TRANSFER] = {
140	[CUE_BULK_DT_WR] = {
141		.type = UE_BULK,
142		.endpoint = UE_ADDR_ANY,
143		.direction = UE_DIR_OUT,
144		.bufsize = (MCLBYTES + 2),
145		.flags = {.pipe_bof = 1,},
146		.callback = cue_bulk_write_callback,
147		.timeout = 10000,	/* 10 seconds */
148	},
149
150	[CUE_BULK_DT_RD] = {
151		.type = UE_BULK,
152		.endpoint = UE_ADDR_ANY,
153		.direction = UE_DIR_IN,
154		.bufsize = (MCLBYTES + 2),
155		.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
156		.callback = cue_bulk_read_callback,
157	},
158};
159
160static device_method_t cue_methods[] = {
161	/* Device interface */
162	DEVMETHOD(device_probe, cue_probe),
163	DEVMETHOD(device_attach, cue_attach),
164	DEVMETHOD(device_detach, cue_detach),
165
166	DEVMETHOD_END
167};
168
169static driver_t cue_driver = {
170	.name = "cue",
171	.methods = cue_methods,
172	.size = sizeof(struct cue_softc),
173};
174
175static devclass_t cue_devclass;
176
177DRIVER_MODULE(cue, uhub, cue_driver, cue_devclass, NULL, 0);
178MODULE_DEPEND(cue, uether, 1, 1, 1);
179MODULE_DEPEND(cue, usb, 1, 1, 1);
180MODULE_DEPEND(cue, ether, 1, 1, 1);
181MODULE_VERSION(cue, 1);
182USB_PNP_HOST_INFO(cue_devs);
183
184static const struct usb_ether_methods cue_ue_methods = {
185	.ue_attach_post = cue_attach_post,
186	.ue_start = cue_start,
187	.ue_init = cue_init,
188	.ue_stop = cue_stop,
189	.ue_tick = cue_tick,
190	.ue_setmulti = cue_setmulti,
191	.ue_setpromisc = cue_setpromisc,
192};
193
194#define	CUE_SETBIT(sc, reg, x)				\
195	cue_csr_write_1(sc, reg, cue_csr_read_1(sc, reg) | (x))
196
197#define	CUE_CLRBIT(sc, reg, x)				\
198	cue_csr_write_1(sc, reg, cue_csr_read_1(sc, reg) & ~(x))
199
200static uint8_t
201cue_csr_read_1(struct cue_softc *sc, uint16_t reg)
202{
203	struct usb_device_request req;
204	uint8_t val;
205
206	req.bmRequestType = UT_READ_VENDOR_DEVICE;
207	req.bRequest = CUE_CMD_READREG;
208	USETW(req.wValue, 0);
209	USETW(req.wIndex, reg);
210	USETW(req.wLength, 1);
211
212	if (uether_do_request(&sc->sc_ue, &req, &val, 1000)) {
213		/* ignore any errors */
214	}
215	return (val);
216}
217
218static uint16_t
219cue_csr_read_2(struct cue_softc *sc, uint8_t reg)
220{
221	struct usb_device_request req;
222	uint16_t val;
223
224	req.bmRequestType = UT_READ_VENDOR_DEVICE;
225	req.bRequest = CUE_CMD_READREG;
226	USETW(req.wValue, 0);
227	USETW(req.wIndex, reg);
228	USETW(req.wLength, 2);
229
230	(void)uether_do_request(&sc->sc_ue, &req, &val, 1000);
231	return (le16toh(val));
232}
233
234static int
235cue_csr_write_1(struct cue_softc *sc, uint16_t reg, uint16_t val)
236{
237	struct usb_device_request req;
238
239	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
240	req.bRequest = CUE_CMD_WRITEREG;
241	USETW(req.wValue, val);
242	USETW(req.wIndex, reg);
243	USETW(req.wLength, 0);
244
245	return (uether_do_request(&sc->sc_ue, &req, NULL, 1000));
246}
247
248static int
249cue_mem(struct cue_softc *sc, uint8_t cmd, uint16_t addr, void *buf, int len)
250{
251	struct usb_device_request req;
252
253	if (cmd == CUE_CMD_READSRAM)
254		req.bmRequestType = UT_READ_VENDOR_DEVICE;
255	else
256		req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
257	req.bRequest = cmd;
258	USETW(req.wValue, 0);
259	USETW(req.wIndex, addr);
260	USETW(req.wLength, len);
261
262	return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
263}
264
265static int
266cue_getmac(struct cue_softc *sc, void *buf)
267{
268	struct usb_device_request req;
269
270	req.bmRequestType = UT_READ_VENDOR_DEVICE;
271	req.bRequest = CUE_CMD_GET_MACADDR;
272	USETW(req.wValue, 0);
273	USETW(req.wIndex, 0);
274	USETW(req.wLength, ETHER_ADDR_LEN);
275
276	return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
277}
278
279#define	CUE_BITS 9
280
281static uint32_t
282cue_mchash(const uint8_t *addr)
283{
284	uint32_t crc;
285
286	/* Compute CRC for the address value. */
287	crc = ether_crc32_le(addr, ETHER_ADDR_LEN);
288
289	return (crc & ((1 << CUE_BITS) - 1));
290}
291
292static void
293cue_setpromisc(struct usb_ether *ue)
294{
295	struct cue_softc *sc = uether_getsc(ue);
296	struct ifnet *ifp = uether_getifp(ue);
297
298	CUE_LOCK_ASSERT(sc, MA_OWNED);
299
300	/* if we want promiscuous mode, set the allframes bit */
301	if (ifp->if_flags & IFF_PROMISC)
302		CUE_SETBIT(sc, CUE_ETHCTL, CUE_ETHCTL_PROMISC);
303	else
304		CUE_CLRBIT(sc, CUE_ETHCTL, CUE_ETHCTL_PROMISC);
305
306	/* write multicast hash-bits */
307	cue_setmulti(ue);
308}
309
310static u_int
311cue_hash_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt)
312{
313	uint8_t *hashtbl = arg;
314	uint32_t h;
315
316	h = cue_mchash(LLADDR(sdl));
317	hashtbl[h >> 3] |= 1 << (h & 0x7);
318
319	return (1);
320}
321
322static void
323cue_setmulti(struct usb_ether *ue)
324{
325	struct cue_softc *sc = uether_getsc(ue);
326	struct ifnet *ifp = uether_getifp(ue);
327	uint32_t h, i;
328	uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
329
330	CUE_LOCK_ASSERT(sc, MA_OWNED);
331
332	if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
333		for (i = 0; i < 8; i++)
334			hashtbl[i] = 0xff;
335		cue_mem(sc, CUE_CMD_WRITESRAM, CUE_MCAST_TABLE_ADDR,
336		    &hashtbl, 8);
337		return;
338	}
339
340	/* now program new ones */
341	if_foreach_llmaddr(ifp, cue_hash_maddr, hashtbl);
342
343	/*
344	 * Also include the broadcast address in the filter
345	 * so we can receive broadcast frames.
346 	 */
347	if (ifp->if_flags & IFF_BROADCAST) {
348		h = cue_mchash(ifp->if_broadcastaddr);
349		hashtbl[h >> 3] |= 1 << (h & 0x7);
350	}
351
352	cue_mem(sc, CUE_CMD_WRITESRAM, CUE_MCAST_TABLE_ADDR, &hashtbl, 8);
353}
354
355static void
356cue_reset(struct cue_softc *sc)
357{
358	struct usb_device_request req;
359
360	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
361	req.bRequest = CUE_CMD_RESET;
362	USETW(req.wValue, 0);
363	USETW(req.wIndex, 0);
364	USETW(req.wLength, 0);
365
366	if (uether_do_request(&sc->sc_ue, &req, NULL, 1000)) {
367		/* ignore any errors */
368	}
369
370	/*
371	 * wait a little while for the chip to get its brains in order:
372	 */
373	uether_pause(&sc->sc_ue, hz / 100);
374}
375
376static void
377cue_attach_post(struct usb_ether *ue)
378{
379	struct cue_softc *sc = uether_getsc(ue);
380
381	cue_getmac(sc, ue->ue_eaddr);
382}
383
384static int
385cue_probe(device_t dev)
386{
387	struct usb_attach_arg *uaa = device_get_ivars(dev);
388
389	if (uaa->usb_mode != USB_MODE_HOST)
390		return (ENXIO);
391	if (uaa->info.bConfigIndex != CUE_CONFIG_IDX)
392		return (ENXIO);
393	if (uaa->info.bIfaceIndex != CUE_IFACE_IDX)
394		return (ENXIO);
395
396	return (usbd_lookup_id_by_uaa(cue_devs, sizeof(cue_devs), uaa));
397}
398
399/*
400 * Attach the interface. Allocate softc structures, do ifmedia
401 * setup and ethernet/BPF attach.
402 */
403static int
404cue_attach(device_t dev)
405{
406	struct usb_attach_arg *uaa = device_get_ivars(dev);
407	struct cue_softc *sc = device_get_softc(dev);
408	struct usb_ether *ue = &sc->sc_ue;
409	uint8_t iface_index;
410	int error;
411
412	device_set_usb_desc(dev);
413	mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
414
415	iface_index = CUE_IFACE_IDX;
416	error = usbd_transfer_setup(uaa->device, &iface_index,
417	    sc->sc_xfer, cue_config, CUE_N_TRANSFER, sc, &sc->sc_mtx);
418	if (error) {
419		device_printf(dev, "allocating USB transfers failed\n");
420		goto detach;
421	}
422
423	ue->ue_sc = sc;
424	ue->ue_dev = dev;
425	ue->ue_udev = uaa->device;
426	ue->ue_mtx = &sc->sc_mtx;
427	ue->ue_methods = &cue_ue_methods;
428
429	error = uether_ifattach(ue);
430	if (error) {
431		device_printf(dev, "could not attach interface\n");
432		goto detach;
433	}
434	return (0);			/* success */
435
436detach:
437	cue_detach(dev);
438	return (ENXIO);			/* failure */
439}
440
441static int
442cue_detach(device_t dev)
443{
444	struct cue_softc *sc = device_get_softc(dev);
445	struct usb_ether *ue = &sc->sc_ue;
446
447	usbd_transfer_unsetup(sc->sc_xfer, CUE_N_TRANSFER);
448	uether_ifdetach(ue);
449	mtx_destroy(&sc->sc_mtx);
450
451	return (0);
452}
453
454static void
455cue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
456{
457	struct cue_softc *sc = usbd_xfer_softc(xfer);
458	struct usb_ether *ue = &sc->sc_ue;
459	struct ifnet *ifp = uether_getifp(ue);
460	struct usb_page_cache *pc;
461	uint8_t buf[2];
462	int len;
463	int actlen;
464
465	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
466
467	switch (USB_GET_STATE(xfer)) {
468	case USB_ST_TRANSFERRED:
469
470		if (actlen <= (int)(2 + sizeof(struct ether_header))) {
471			if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
472			goto tr_setup;
473		}
474		pc = usbd_xfer_get_frame(xfer, 0);
475		usbd_copy_out(pc, 0, buf, 2);
476		actlen -= 2;
477		len = buf[0] | (buf[1] << 8);
478		len = min(actlen, len);
479
480		uether_rxbuf(ue, pc, 2, len);
481		/* FALLTHROUGH */
482	case USB_ST_SETUP:
483tr_setup:
484		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
485		usbd_transfer_submit(xfer);
486		uether_rxflush(ue);
487		return;
488
489	default:			/* Error */
490		DPRINTF("bulk read error, %s\n",
491		    usbd_errstr(error));
492
493		if (error != USB_ERR_CANCELLED) {
494			/* try to clear stall first */
495			usbd_xfer_set_stall(xfer);
496			goto tr_setup;
497		}
498		return;
499	}
500}
501
502static void
503cue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
504{
505	struct cue_softc *sc = usbd_xfer_softc(xfer);
506	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
507	struct usb_page_cache *pc;
508	struct mbuf *m;
509	uint8_t buf[2];
510
511	switch (USB_GET_STATE(xfer)) {
512	case USB_ST_TRANSFERRED:
513		DPRINTFN(11, "transfer complete\n");
514		if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
515
516		/* FALLTHROUGH */
517	case USB_ST_SETUP:
518tr_setup:
519		IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
520
521		if (m == NULL)
522			return;
523		if (m->m_pkthdr.len > MCLBYTES)
524			m->m_pkthdr.len = MCLBYTES;
525		usbd_xfer_set_frame_len(xfer, 0, (m->m_pkthdr.len + 2));
526
527		/* the first two bytes are the frame length */
528
529		buf[0] = (uint8_t)(m->m_pkthdr.len);
530		buf[1] = (uint8_t)(m->m_pkthdr.len >> 8);
531
532		pc = usbd_xfer_get_frame(xfer, 0);
533		usbd_copy_in(pc, 0, buf, 2);
534		usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len);
535
536		/*
537		 * If there's a BPF listener, bounce a copy of this frame
538		 * to him.
539		 */
540		BPF_MTAP(ifp, m);
541
542		m_freem(m);
543
544		usbd_transfer_submit(xfer);
545
546		return;
547
548	default:			/* Error */
549		DPRINTFN(11, "transfer error, %s\n",
550		    usbd_errstr(error));
551
552		if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
553
554		if (error != USB_ERR_CANCELLED) {
555			/* try to clear stall first */
556			usbd_xfer_set_stall(xfer);
557			goto tr_setup;
558		}
559		return;
560	}
561}
562
563static void
564cue_tick(struct usb_ether *ue)
565{
566	struct cue_softc *sc = uether_getsc(ue);
567	struct ifnet *ifp = uether_getifp(ue);
568
569	CUE_LOCK_ASSERT(sc, MA_OWNED);
570
571	if_inc_counter(ifp, IFCOUNTER_COLLISIONS, cue_csr_read_2(sc, CUE_TX_SINGLECOLL));
572	if_inc_counter(ifp, IFCOUNTER_COLLISIONS, cue_csr_read_2(sc, CUE_TX_MULTICOLL));
573	if_inc_counter(ifp, IFCOUNTER_COLLISIONS, cue_csr_read_2(sc, CUE_TX_EXCESSCOLL));
574
575	if (cue_csr_read_2(sc, CUE_RX_FRAMEERR))
576		if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
577}
578
579static void
580cue_start(struct usb_ether *ue)
581{
582	struct cue_softc *sc = uether_getsc(ue);
583
584	/*
585	 * start the USB transfers, if not already started:
586	 */
587	usbd_transfer_start(sc->sc_xfer[CUE_BULK_DT_RD]);
588	usbd_transfer_start(sc->sc_xfer[CUE_BULK_DT_WR]);
589}
590
591static void
592cue_init(struct usb_ether *ue)
593{
594	struct cue_softc *sc = uether_getsc(ue);
595	struct ifnet *ifp = uether_getifp(ue);
596	int i;
597
598	CUE_LOCK_ASSERT(sc, MA_OWNED);
599
600	/*
601	 * Cancel pending I/O and free all RX/TX buffers.
602	 */
603	cue_stop(ue);
604#if 0
605	cue_reset(sc);
606#endif
607	/* Set MAC address */
608	for (i = 0; i < ETHER_ADDR_LEN; i++)
609		cue_csr_write_1(sc, CUE_PAR0 - i, IF_LLADDR(ifp)[i]);
610
611	/* Enable RX logic. */
612	cue_csr_write_1(sc, CUE_ETHCTL, CUE_ETHCTL_RX_ON | CUE_ETHCTL_MCAST_ON);
613
614	/* Load the multicast filter */
615	cue_setpromisc(ue);
616
617	/*
618	 * Set the number of RX and TX buffers that we want
619	 * to reserve inside the ASIC.
620	 */
621	cue_csr_write_1(sc, CUE_RX_BUFPKTS, CUE_RX_FRAMES);
622	cue_csr_write_1(sc, CUE_TX_BUFPKTS, CUE_TX_FRAMES);
623
624	/* Set advanced operation modes. */
625	cue_csr_write_1(sc, CUE_ADVANCED_OPMODES,
626	    CUE_AOP_EMBED_RXLEN | 0x01);/* 1 wait state */
627
628	/* Program the LED operation. */
629	cue_csr_write_1(sc, CUE_LEDCTL, CUE_LEDCTL_FOLLOW_LINK);
630
631	usbd_xfer_set_stall(sc->sc_xfer[CUE_BULK_DT_WR]);
632
633	ifp->if_drv_flags |= IFF_DRV_RUNNING;
634	cue_start(ue);
635}
636
637/*
638 * Stop the adapter and free any mbufs allocated to the
639 * RX and TX lists.
640 */
641static void
642cue_stop(struct usb_ether *ue)
643{
644	struct cue_softc *sc = uether_getsc(ue);
645	struct ifnet *ifp = uether_getifp(ue);
646
647	CUE_LOCK_ASSERT(sc, MA_OWNED);
648
649	ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
650
651	/*
652	 * stop all the transfers, if not already stopped:
653	 */
654	usbd_transfer_stop(sc->sc_xfer[CUE_BULK_DT_WR]);
655	usbd_transfer_stop(sc->sc_xfer[CUE_BULK_DT_RD]);
656
657	cue_csr_write_1(sc, CUE_ETHCTL, 0);
658	cue_reset(sc);
659}
660