1/*-
2 * Copyright (c) 2016 Stanislav Galabov.
3 * Copyright (c) 2011-2012 Stefan Bethke.
4 * Copyright (c) 2012 Adrian Chadd.
5 * 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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#include <sys/param.h>
32#include <sys/bus.h>
33#include <sys/errno.h>
34#include <sys/kernel.h>
35#include <sys/lock.h>
36#include <sys/malloc.h>
37#include <sys/module.h>
38#include <sys/mutex.h>
39#include <sys/socket.h>
40#include <sys/sockio.h>
41#include <sys/sysctl.h>
42#include <sys/systm.h>
43
44#include <net/if.h>
45#include <net/if_var.h>
46#include <net/ethernet.h>
47#include <net/if_media.h>
48#include <net/if_types.h>
49
50#include <machine/bus.h>
51#include <dev/mii/mii.h>
52#include <dev/mii/miivar.h>
53#include <dev/mdio/mdio.h>
54
55#include <dev/etherswitch/etherswitch.h>
56#include <dev/etherswitch/mtkswitch/mtkswitchvar.h>
57
58#include <dev/ofw/ofw_bus_subr.h>
59
60#include "mdio_if.h"
61#include "miibus_if.h"
62#include "etherswitch_if.h"
63
64#define DEBUG
65
66#if defined(DEBUG)
67static SYSCTL_NODE(_debug, OID_AUTO, mtkswitch, CTLFLAG_RD, 0, "mtkswitch");
68#endif
69
70static inline int mtkswitch_portforphy(int phy);
71static int mtkswitch_ifmedia_upd(struct ifnet *ifp);
72static void mtkswitch_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr);
73static void mtkswitch_tick(void *arg);
74
75static const struct ofw_compat_data compat_data[] = {
76	{ "ralink,rt3050-esw",		MTK_SWITCH_RT3050 },
77	{ "ralink,rt3352-esw",		MTK_SWITCH_RT3352 },
78	{ "ralink,rt5350-esw",		MTK_SWITCH_RT5350 },
79	{ "mediatek,mt7620-gsw",	MTK_SWITCH_MT7620 },
80	{ "mediatek,mt7621-gsw",	MTK_SWITCH_MT7621 },
81	{ "mediatek,mt7628-esw",	MTK_SWITCH_MT7628 },
82
83	/* Sentinel */
84	{ NULL,				MTK_SWITCH_NONE }
85};
86
87static int
88mtkswitch_probe(device_t dev)
89{
90	struct mtkswitch_softc *sc;
91	mtk_switch_type switch_type;
92
93	if (!ofw_bus_status_okay(dev))
94		return (ENXIO);
95
96	switch_type = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
97	if (switch_type == MTK_SWITCH_NONE)
98		return (ENXIO);
99
100	sc = device_get_softc(dev);
101	bzero(sc, sizeof(*sc));
102	sc->sc_switchtype = switch_type;
103
104	device_set_desc_copy(dev, "MTK Switch Driver");
105
106	return (0);
107}
108
109static int
110mtkswitch_attach_phys(struct mtkswitch_softc *sc)
111{
112	int phy, err = 0;
113	char name[IFNAMSIZ];
114
115	/* PHYs need an interface, so we generate a dummy one */
116	snprintf(name, IFNAMSIZ, "%sport", device_get_nameunit(sc->sc_dev));
117	for (phy = 0; phy < sc->numphys; phy++) {
118		if ((sc->phymap & (1u << phy)) == 0) {
119			sc->ifp[phy] = NULL;
120			sc->ifname[phy] = NULL;
121			sc->miibus[phy] = NULL;
122			continue;
123		}
124		sc->ifp[phy] = if_alloc(IFT_ETHER);
125		sc->ifp[phy]->if_softc = sc;
126		sc->ifp[phy]->if_flags |= IFF_UP | IFF_BROADCAST |
127		    IFF_DRV_RUNNING | IFF_SIMPLEX;
128		sc->ifname[phy] = malloc(strlen(name) + 1, M_DEVBUF, M_WAITOK);
129		bcopy(name, sc->ifname[phy], strlen(name) + 1);
130		if_initname(sc->ifp[phy], sc->ifname[phy],
131		    mtkswitch_portforphy(phy));
132		err = mii_attach(sc->sc_dev, &sc->miibus[phy], sc->ifp[phy],
133		    mtkswitch_ifmedia_upd, mtkswitch_ifmedia_sts,
134		    BMSR_DEFCAPMASK, phy, MII_OFFSET_ANY, 0);
135		if (err != 0) {
136			device_printf(sc->sc_dev,
137			    "attaching PHY %d failed\n",
138			    phy);
139		} else {
140			DPRINTF(sc->sc_dev, "%s attached to pseudo interface "
141			    "%s\n", device_get_nameunit(sc->miibus[phy]),
142			    sc->ifp[phy]->if_xname);
143		}
144	}
145	return (err);
146}
147
148static int
149mtkswitch_set_vlan_mode(struct mtkswitch_softc *sc, uint32_t mode)
150{
151
152	/* Check for invalid modes. */
153	if ((mode & sc->info.es_vlan_caps) != mode)
154		return (EINVAL);
155
156	sc->vlan_mode = mode;
157
158	/* Reset VLANs. */
159	sc->hal.mtkswitch_vlan_init_hw(sc);
160
161	return (0);
162}
163
164static int
165mtkswitch_attach(device_t dev)
166{
167	struct mtkswitch_softc *sc;
168	int err = 0;
169	int port, rid;
170
171	sc = device_get_softc(dev);
172
173	/* sc->sc_switchtype is already decided in mtkswitch_probe() */
174	sc->numports = MTKSWITCH_MAX_PORTS;
175	sc->numphys = MTKSWITCH_MAX_PHYS;
176	sc->cpuport = MTKSWITCH_CPU_PORT;
177	sc->sc_dev = dev;
178
179	/* Attach switch related functions */
180	if (sc->sc_switchtype == MTK_SWITCH_NONE) {
181		device_printf(dev, "Unknown switch type\n");
182		return (ENXIO);
183	}
184
185	if (sc->sc_switchtype == MTK_SWITCH_MT7620 ||
186	    sc->sc_switchtype == MTK_SWITCH_MT7621)
187		mtk_attach_switch_mt7620(sc);
188	else
189		mtk_attach_switch_rt3050(sc);
190
191	/* Allocate resources */
192	rid = 0;
193	sc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
194	    RF_ACTIVE);
195	if (sc->sc_res == NULL) {
196		device_printf(dev, "could not map memory\n");
197		return (ENXIO);
198	}
199
200	mtx_init(&sc->sc_mtx, "mtkswitch", NULL, MTX_DEF);
201
202	/* Reset the switch */
203	if (sc->hal.mtkswitch_reset(sc)) {
204		DPRINTF(dev, "%s: mtkswitch_reset: failed\n", __func__);
205		return (ENXIO);
206	}
207
208	err = sc->hal.mtkswitch_hw_setup(sc);
209	DPRINTF(dev, "%s: hw_setup: err=%d\n", __func__, err);
210	if (err != 0)
211		return (err);
212
213	err = sc->hal.mtkswitch_hw_global_setup(sc);
214	DPRINTF(dev, "%s: hw_global_setup: err=%d\n", __func__, err);
215	if (err != 0)
216		return (err);
217
218	/* Initialize the switch ports */
219	for (port = 0; port < sc->numports; port++) {
220		sc->hal.mtkswitch_port_init(sc, port);
221	}
222
223	/* Attach the PHYs and complete the bus enumeration */
224	err = mtkswitch_attach_phys(sc);
225	DPRINTF(dev, "%s: attach_phys: err=%d\n", __func__, err);
226	if (err != 0)
227		return (err);
228
229	/* Default to ingress filters off. */
230	err = mtkswitch_set_vlan_mode(sc, ETHERSWITCH_VLAN_DOT1Q);
231	DPRINTF(dev, "%s: set_vlan_mode: err=%d\n", __func__, err);
232	if (err != 0)
233		return (err);
234
235	bus_generic_probe(dev);
236	bus_enumerate_hinted_children(dev);
237	err = bus_generic_attach(dev);
238	DPRINTF(dev, "%s: bus_generic_attach: err=%d\n", __func__, err);
239	if (err != 0)
240		return (err);
241
242	callout_init_mtx(&sc->callout_tick, &sc->sc_mtx, 0);
243
244	MTKSWITCH_LOCK(sc);
245	mtkswitch_tick(sc);
246	MTKSWITCH_UNLOCK(sc);
247
248	return (0);
249}
250
251static int
252mtkswitch_detach(device_t dev)
253{
254	struct mtkswitch_softc *sc = device_get_softc(dev);
255	int phy;
256
257	callout_drain(&sc->callout_tick);
258
259	for (phy = 0; phy < MTKSWITCH_MAX_PHYS; phy++) {
260		if (sc->miibus[phy] != NULL)
261			device_delete_child(dev, sc->miibus[phy]);
262		if (sc->ifp[phy] != NULL)
263			if_free(sc->ifp[phy]);
264		free(sc->ifname[phy], M_DEVBUF);
265	}
266
267	bus_generic_detach(dev);
268	mtx_destroy(&sc->sc_mtx);
269
270	return (0);
271}
272
273/* PHY <-> port mapping is currently 1:1 */
274static inline int
275mtkswitch_portforphy(int phy)
276{
277
278	return (phy);
279}
280
281static inline int
282mtkswitch_phyforport(int port)
283{
284
285	return (port);
286}
287
288static inline struct mii_data *
289mtkswitch_miiforport(struct mtkswitch_softc *sc, int port)
290{
291	int phy = mtkswitch_phyforport(port);
292
293	if (phy < 0 || phy >= MTKSWITCH_MAX_PHYS || sc->miibus[phy] == NULL)
294		return (NULL);
295
296	return (device_get_softc(sc->miibus[phy]));
297}
298
299static inline struct ifnet *
300mtkswitch_ifpforport(struct mtkswitch_softc *sc, int port)
301{
302	int phy = mtkswitch_phyforport(port);
303
304	if (phy < 0 || phy >= MTKSWITCH_MAX_PHYS)
305		return (NULL);
306
307	return (sc->ifp[phy]);
308}
309
310/*
311 * Convert port status to ifmedia.
312 */
313static void
314mtkswitch_update_ifmedia(uint32_t portstatus, u_int *media_status,
315    u_int *media_active)
316{
317	*media_active = IFM_ETHER;
318	*media_status = IFM_AVALID;
319
320	if ((portstatus & MTKSWITCH_LINK_UP) != 0)
321		*media_status |= IFM_ACTIVE;
322	else {
323		*media_active |= IFM_NONE;
324		return;
325	}
326
327	switch (portstatus & MTKSWITCH_SPEED_MASK) {
328	case MTKSWITCH_SPEED_10:
329		*media_active |= IFM_10_T;
330		break;
331	case MTKSWITCH_SPEED_100:
332		*media_active |= IFM_100_TX;
333		break;
334	case MTKSWITCH_SPEED_1000:
335		*media_active |= IFM_1000_T;
336		break;
337	}
338
339	if ((portstatus & MTKSWITCH_DUPLEX) != 0)
340		*media_active |= IFM_FDX;
341	else
342		*media_active |= IFM_HDX;
343
344	if ((portstatus & MTKSWITCH_TXFLOW) != 0)
345		*media_active |= IFM_ETH_TXPAUSE;
346	if ((portstatus & MTKSWITCH_RXFLOW) != 0)
347		*media_active |= IFM_ETH_RXPAUSE;
348}
349
350static void
351mtkswitch_miipollstat(struct mtkswitch_softc *sc)
352{
353	struct mii_data *mii;
354	struct mii_softc *miisc;
355	uint32_t portstatus;
356	int i, port_flap = 0;
357
358	MTKSWITCH_LOCK_ASSERT(sc, MA_OWNED);
359
360	for (i = 0; i < sc->numphys; i++) {
361		if (sc->miibus[i] == NULL)
362			continue;
363		mii = device_get_softc(sc->miibus[i]);
364		portstatus = sc->hal.mtkswitch_get_port_status(sc,
365		    mtkswitch_portforphy(i));
366
367		/* If a port has flapped - mark it so we can flush the ATU */
368		if (((mii->mii_media_status & IFM_ACTIVE) == 0 &&
369		    (portstatus & MTKSWITCH_LINK_UP) != 0) ||
370		    ((mii->mii_media_status & IFM_ACTIVE) != 0 &&
371		    (portstatus & MTKSWITCH_LINK_UP) == 0)) {
372			port_flap = 1;
373		}
374
375		mtkswitch_update_ifmedia(portstatus, &mii->mii_media_status,
376		    &mii->mii_media_active);
377		LIST_FOREACH(miisc, &mii->mii_phys, mii_list) {
378			if (IFM_INST(mii->mii_media.ifm_cur->ifm_media) !=
379			    miisc->mii_inst)
380				continue;
381			mii_phy_update(miisc, MII_POLLSTAT);
382		}
383	}
384
385	if (port_flap)
386		sc->hal.mtkswitch_atu_flush(sc);
387}
388
389static void
390mtkswitch_tick(void *arg)
391{
392	struct mtkswitch_softc *sc = arg;
393
394	mtkswitch_miipollstat(sc);
395	callout_reset(&sc->callout_tick, hz, mtkswitch_tick, sc);
396}
397
398static void
399mtkswitch_lock(device_t dev)
400{
401        struct mtkswitch_softc *sc = device_get_softc(dev);
402
403	MTKSWITCH_LOCK_ASSERT(sc, MA_NOTOWNED);
404	MTKSWITCH_LOCK(sc);
405}
406
407static void
408mtkswitch_unlock(device_t dev)
409{
410	struct mtkswitch_softc *sc = device_get_softc(dev);
411
412	MTKSWITCH_LOCK_ASSERT(sc, MA_OWNED);
413	MTKSWITCH_UNLOCK(sc);
414}
415
416static etherswitch_info_t *
417mtkswitch_getinfo(device_t dev)
418{
419	struct mtkswitch_softc *sc = device_get_softc(dev);
420
421	return (&sc->info);
422}
423
424static inline int
425mtkswitch_is_cpuport(struct mtkswitch_softc *sc, int port)
426{
427
428	return (sc->cpuport == port);
429}
430
431static int
432mtkswitch_getport(device_t dev, etherswitch_port_t *p)
433{
434	struct mtkswitch_softc *sc;
435	struct mii_data *mii;
436	struct ifmediareq *ifmr;
437	int err;
438
439	sc = device_get_softc(dev);
440	if (p->es_port < 0 || p->es_port > sc->info.es_nports)
441		return (ENXIO);
442
443	err = sc->hal.mtkswitch_port_vlan_get(sc, p);
444	if (err != 0)
445		return (err);
446
447	mii = mtkswitch_miiforport(sc, p->es_port);
448	if (mtkswitch_is_cpuport(sc, p->es_port)) {
449		/* fill in fixed values for CPU port */
450		/* XXX is this valid in all cases? */
451		p->es_flags |= ETHERSWITCH_PORT_CPU;
452		ifmr = &p->es_ifmr;
453		ifmr->ifm_count = 0;
454		ifmr->ifm_current = ifmr->ifm_active =
455		    IFM_ETHER | IFM_1000_T | IFM_FDX;
456		ifmr->ifm_mask = 0;
457		ifmr->ifm_status = IFM_ACTIVE | IFM_AVALID;
458	} else if (mii != NULL) {
459		err = ifmedia_ioctl(mii->mii_ifp, &p->es_ifr,
460		    &mii->mii_media, SIOCGIFMEDIA);
461		if (err)
462			return (err);
463	} else {
464		ifmr = &p->es_ifmr;
465		ifmr->ifm_count = 0;
466		ifmr->ifm_current = ifmr->ifm_active = IFM_NONE;
467		ifmr->ifm_mask = 0;
468		ifmr->ifm_status = 0;
469	}
470	return (0);
471}
472
473static int
474mtkswitch_setport(device_t dev, etherswitch_port_t *p)
475{
476	int err;
477	struct mtkswitch_softc *sc;
478	struct ifmedia *ifm;
479	struct mii_data *mii;
480	struct ifnet *ifp;
481
482	sc = device_get_softc(dev);
483	if (p->es_port < 0 || p->es_port > sc->info.es_nports)
484		return (ENXIO);
485
486	/* Port flags. */
487	if (sc->vlan_mode == ETHERSWITCH_VLAN_DOT1Q) {
488		err = sc->hal.mtkswitch_port_vlan_setup(sc, p);
489		if (err)
490			return (err);
491	}
492
493	/* Do not allow media changes on CPU port. */
494	if (mtkswitch_is_cpuport(sc, p->es_port))
495		return (0);
496
497	mii = mtkswitch_miiforport(sc, p->es_port);
498	if (mii == NULL)
499		return (ENXIO);
500
501	ifp = mtkswitch_ifpforport(sc, p->es_port);
502
503	ifm = &mii->mii_media;
504	return (ifmedia_ioctl(ifp, &p->es_ifr, ifm, SIOCSIFMEDIA));
505}
506
507static void
508mtkswitch_statchg(device_t dev)
509{
510
511	DPRINTF(dev, "%s\n", __func__);
512}
513
514static int
515mtkswitch_ifmedia_upd(struct ifnet *ifp)
516{
517	struct mtkswitch_softc *sc = ifp->if_softc;
518	struct mii_data *mii = mtkswitch_miiforport(sc, ifp->if_dunit);
519
520	if (mii == NULL)
521		return (ENXIO);
522	mii_mediachg(mii);
523	return (0);
524}
525
526static void
527mtkswitch_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
528{
529	struct mtkswitch_softc *sc = ifp->if_softc;
530	struct mii_data *mii = mtkswitch_miiforport(sc, ifp->if_dunit);
531
532	DPRINTF(sc->sc_dev, "%s\n", __func__);
533
534	if (mii == NULL)
535		return;
536	mii_pollstat(mii);
537	ifmr->ifm_active = mii->mii_media_active;
538	ifmr->ifm_status = mii->mii_media_status;
539}
540
541static int
542mtkswitch_getconf(device_t dev, etherswitch_conf_t *conf)
543{
544	struct mtkswitch_softc *sc;
545
546	sc = device_get_softc(dev);
547
548	/* Return the VLAN mode. */
549	conf->cmd = ETHERSWITCH_CONF_VLAN_MODE;
550	conf->vlan_mode = sc->vlan_mode;
551
552	return (0);
553}
554
555static int
556mtkswitch_setconf(device_t dev, etherswitch_conf_t *conf)
557{
558	struct mtkswitch_softc *sc;
559	int err;
560
561	sc = device_get_softc(dev);
562
563	/* Set the VLAN mode. */
564	if (conf->cmd & ETHERSWITCH_CONF_VLAN_MODE) {
565		err = mtkswitch_set_vlan_mode(sc, conf->vlan_mode);
566		if (err != 0)
567			return (err);
568	}
569
570	return (0);
571}
572
573static int
574mtkswitch_getvgroup(device_t dev, etherswitch_vlangroup_t *e)
575{
576        struct mtkswitch_softc *sc = device_get_softc(dev);
577
578        return (sc->hal.mtkswitch_vlan_getvgroup(sc, e));
579}
580
581static int
582mtkswitch_setvgroup(device_t dev, etherswitch_vlangroup_t *e)
583{
584	struct mtkswitch_softc *sc = device_get_softc(dev);
585
586	return (sc->hal.mtkswitch_vlan_setvgroup(sc, e));
587}
588
589static int
590mtkswitch_readphy(device_t dev, int phy, int reg)
591{
592	struct mtkswitch_softc *sc = device_get_softc(dev);
593
594	return (sc->hal.mtkswitch_phy_read(dev, phy, reg));
595}
596
597static int
598mtkswitch_writephy(device_t dev, int phy, int reg, int val)
599{
600	struct mtkswitch_softc *sc = device_get_softc(dev);
601
602	return (sc->hal.mtkswitch_phy_write(dev, phy, reg, val));
603}
604
605static int
606mtkswitch_readreg(device_t dev, int addr)
607{
608	struct mtkswitch_softc *sc = device_get_softc(dev);
609
610	return (sc->hal.mtkswitch_reg_read(dev, addr));
611}
612
613static int
614mtkswitch_writereg(device_t dev, int addr, int value)
615{
616	struct mtkswitch_softc *sc = device_get_softc(dev);
617
618	return (sc->hal.mtkswitch_reg_write(dev, addr, value));
619}
620
621static device_method_t mtkswitch_methods[] = {
622	/* Device interface */
623	DEVMETHOD(device_probe,		mtkswitch_probe),
624	DEVMETHOD(device_attach,	mtkswitch_attach),
625	DEVMETHOD(device_detach,	mtkswitch_detach),
626
627	/* bus interface */
628	DEVMETHOD(bus_add_child,	device_add_child_ordered),
629
630	/* MII interface */
631	DEVMETHOD(miibus_readreg,	mtkswitch_readphy),
632	DEVMETHOD(miibus_writereg,	mtkswitch_writephy),
633	DEVMETHOD(miibus_statchg,	mtkswitch_statchg),
634
635	/* MDIO interface */
636	DEVMETHOD(mdio_readreg,		mtkswitch_readphy),
637	DEVMETHOD(mdio_writereg,	mtkswitch_writephy),
638
639	/* ehterswitch interface */
640	DEVMETHOD(etherswitch_lock,	mtkswitch_lock),
641	DEVMETHOD(etherswitch_unlock,	mtkswitch_unlock),
642	DEVMETHOD(etherswitch_getinfo,	mtkswitch_getinfo),
643	DEVMETHOD(etherswitch_readreg,	mtkswitch_readreg),
644	DEVMETHOD(etherswitch_writereg,	mtkswitch_writereg),
645	DEVMETHOD(etherswitch_readphyreg,	mtkswitch_readphy),
646	DEVMETHOD(etherswitch_writephyreg,	mtkswitch_writephy),
647	DEVMETHOD(etherswitch_getport,	mtkswitch_getport),
648	DEVMETHOD(etherswitch_setport,	mtkswitch_setport),
649	DEVMETHOD(etherswitch_getvgroup,	mtkswitch_getvgroup),
650	DEVMETHOD(etherswitch_setvgroup,	mtkswitch_setvgroup),
651	DEVMETHOD(etherswitch_getconf,	mtkswitch_getconf),
652	DEVMETHOD(etherswitch_setconf,	mtkswitch_setconf),
653
654	DEVMETHOD_END
655};
656
657DEFINE_CLASS_0(mtkswitch, mtkswitch_driver, mtkswitch_methods,
658    sizeof(struct mtkswitch_softc));
659static devclass_t mtkswitch_devclass;
660
661DRIVER_MODULE(mtkswitch, simplebus, mtkswitch_driver, mtkswitch_devclass, 0, 0);
662DRIVER_MODULE(miibus, mtkswitch, miibus_driver, miibus_devclass, 0, 0);
663DRIVER_MODULE(mdio, mtkswitch, mdio_driver, mdio_devclass, 0, 0);
664DRIVER_MODULE(etherswitch, mtkswitch, etherswitch_driver, etherswitch_devclass,
665    0, 0);
666MODULE_VERSION(mtkswitch, 1);
667MODULE_DEPEND(mtkswitch, miibus, 1, 1, 1);
668MODULE_DEPEND(mtkswitch, etherswitch, 1, 1, 1);
669