xref: /freebsd/sys/dev/etherswitch/e6000sw/e6000sw.c (revision 38a52bd3)
1 /*-
2  * Copyright (c) 2015 Semihalf
3  * Copyright (c) 2015 Stormshield
4  * Copyright (c) 2018-2019, Rubicon Communications, LLC (Netgate)
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 
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31 
32 #include <sys/param.h>
33 #include <sys/bus.h>
34 #include <sys/errno.h>
35 #include <sys/kernel.h>
36 #include <sys/kthread.h>
37 #include <sys/module.h>
38 #include <sys/taskqueue.h>
39 #include <sys/socket.h>
40 #include <sys/sockio.h>
41 
42 #include <net/if.h>
43 #include <net/if_media.h>
44 #include <net/if_types.h>
45 
46 #include <dev/etherswitch/etherswitch.h>
47 #include <dev/mii/mii.h>
48 #include <dev/mii/miivar.h>
49 
50 #include <dev/ofw/ofw_bus.h>
51 #include <dev/ofw/ofw_bus_subr.h>
52 
53 #include "e6000swreg.h"
54 #include "etherswitch_if.h"
55 #include "miibus_if.h"
56 #include "mdio_if.h"
57 
58 MALLOC_DECLARE(M_E6000SW);
59 MALLOC_DEFINE(M_E6000SW, "e6000sw", "e6000sw switch");
60 
61 #define	E6000SW_LOCK(_sc)		sx_xlock(&(_sc)->sx)
62 #define	E6000SW_UNLOCK(_sc)		sx_unlock(&(_sc)->sx)
63 #define	E6000SW_LOCK_ASSERT(_sc, _what)	sx_assert(&(_sc)->sx, (_what))
64 #define	E6000SW_TRYLOCK(_sc)		sx_tryxlock(&(_sc)->sx)
65 #define	E6000SW_WAITREADY(_sc, _reg, _bit)				\
66     e6000sw_waitready((_sc), REG_GLOBAL, (_reg), (_bit))
67 #define	E6000SW_WAITREADY2(_sc, _reg, _bit)				\
68     e6000sw_waitready((_sc), REG_GLOBAL2, (_reg), (_bit))
69 #define	MDIO_READ(dev, addr, reg)					\
70     MDIO_READREG(device_get_parent(dev), (addr), (reg))
71 #define	MDIO_WRITE(dev, addr, reg, val)					\
72     MDIO_WRITEREG(device_get_parent(dev), (addr), (reg), (val))
73 
74 
75 typedef struct e6000sw_softc {
76 	device_t		dev;
77 	phandle_t		node;
78 
79 	struct sx		sx;
80 	struct ifnet		*ifp[E6000SW_MAX_PORTS];
81 	char			*ifname[E6000SW_MAX_PORTS];
82 	device_t		miibus[E6000SW_MAX_PORTS];
83 	struct taskqueue	*sc_tq;
84 	struct timeout_task	sc_tt;
85 
86 	int			vlans[E6000SW_NUM_VLANS];
87 	uint32_t		swid;
88 	uint32_t		vlan_mode;
89 	uint32_t		cpuports_mask;
90 	uint32_t		fixed_mask;
91 	uint32_t		fixed25_mask;
92 	uint32_t		ports_mask;
93 	int			phy_base;
94 	int			sw_addr;
95 	int			num_ports;
96 } e6000sw_softc_t;
97 
98 static etherswitch_info_t etherswitch_info = {
99 	.es_nports =		0,
100 	.es_nvlangroups =	0,
101 	.es_vlan_caps =		ETHERSWITCH_VLAN_PORT | ETHERSWITCH_VLAN_DOT1Q,
102 	.es_name =		"Marvell 6000 series switch"
103 };
104 
105 static void e6000sw_identify(driver_t *, device_t);
106 static int e6000sw_probe(device_t);
107 static int e6000sw_parse_fixed_link(e6000sw_softc_t *, phandle_t, uint32_t);
108 static int e6000sw_parse_ethernet(e6000sw_softc_t *, phandle_t, uint32_t);
109 static int e6000sw_attach(device_t);
110 static int e6000sw_detach(device_t);
111 static int e6000sw_read_xmdio(device_t, int, int, int);
112 static int e6000sw_write_xmdio(device_t, int, int, int, int);
113 static int e6000sw_readphy(device_t, int, int);
114 static int e6000sw_writephy(device_t, int, int, int);
115 static int e6000sw_readphy_locked(device_t, int, int);
116 static int e6000sw_writephy_locked(device_t, int, int, int);
117 static etherswitch_info_t* e6000sw_getinfo(device_t);
118 static int e6000sw_getconf(device_t, etherswitch_conf_t *);
119 static int e6000sw_setconf(device_t, etherswitch_conf_t *);
120 static void e6000sw_lock(device_t);
121 static void e6000sw_unlock(device_t);
122 static int e6000sw_getport(device_t, etherswitch_port_t *);
123 static int e6000sw_setport(device_t, etherswitch_port_t *);
124 static int e6000sw_set_vlan_mode(e6000sw_softc_t *, uint32_t);
125 static int e6000sw_readreg_wrapper(device_t, int);
126 static int e6000sw_writereg_wrapper(device_t, int, int);
127 static int e6000sw_getvgroup_wrapper(device_t, etherswitch_vlangroup_t *);
128 static int e6000sw_setvgroup_wrapper(device_t, etherswitch_vlangroup_t *);
129 static int e6000sw_setvgroup(device_t, etherswitch_vlangroup_t *);
130 static int e6000sw_getvgroup(device_t, etherswitch_vlangroup_t *);
131 static void e6000sw_setup(device_t, e6000sw_softc_t *);
132 static void e6000sw_tick(void *, int);
133 static void e6000sw_set_atustat(device_t, e6000sw_softc_t *, int, int);
134 static int e6000sw_atu_flush(device_t, e6000sw_softc_t *, int);
135 static int e6000sw_vtu_flush(e6000sw_softc_t *);
136 static int e6000sw_vtu_update(e6000sw_softc_t *, int, int, int, int, int);
137 static __inline void e6000sw_writereg(e6000sw_softc_t *, int, int, int);
138 static __inline uint32_t e6000sw_readreg(e6000sw_softc_t *, int, int);
139 static int e6000sw_ifmedia_upd(struct ifnet *);
140 static void e6000sw_ifmedia_sts(struct ifnet *, struct ifmediareq *);
141 static int e6000sw_atu_mac_table(device_t, e6000sw_softc_t *, struct atu_opt *,
142     int);
143 static int e6000sw_get_pvid(e6000sw_softc_t *, int, int *);
144 static void e6000sw_set_pvid(e6000sw_softc_t *, int, int);
145 static __inline bool e6000sw_is_cpuport(e6000sw_softc_t *, int);
146 static __inline bool e6000sw_is_fixedport(e6000sw_softc_t *, int);
147 static __inline bool e6000sw_is_fixed25port(e6000sw_softc_t *, int);
148 static __inline bool e6000sw_is_phyport(e6000sw_softc_t *, int);
149 static __inline bool e6000sw_is_portenabled(e6000sw_softc_t *, int);
150 static __inline struct mii_data *e6000sw_miiforphy(e6000sw_softc_t *,
151     unsigned int);
152 
153 static device_method_t e6000sw_methods[] = {
154 	/* device interface */
155 	DEVMETHOD(device_identify,		e6000sw_identify),
156 	DEVMETHOD(device_probe,			e6000sw_probe),
157 	DEVMETHOD(device_attach,		e6000sw_attach),
158 	DEVMETHOD(device_detach,		e6000sw_detach),
159 
160 	/* bus interface */
161 	DEVMETHOD(bus_add_child,		device_add_child_ordered),
162 
163 	/* mii interface */
164 	DEVMETHOD(miibus_readreg,		e6000sw_readphy_locked),
165 	DEVMETHOD(miibus_writereg,		e6000sw_writephy_locked),
166 
167 	/* etherswitch interface */
168 	DEVMETHOD(etherswitch_getinfo,		e6000sw_getinfo),
169 	DEVMETHOD(etherswitch_getconf,		e6000sw_getconf),
170 	DEVMETHOD(etherswitch_setconf,		e6000sw_setconf),
171 	DEVMETHOD(etherswitch_lock,		e6000sw_lock),
172 	DEVMETHOD(etherswitch_unlock,		e6000sw_unlock),
173 	DEVMETHOD(etherswitch_getport,		e6000sw_getport),
174 	DEVMETHOD(etherswitch_setport,		e6000sw_setport),
175 	DEVMETHOD(etherswitch_readreg,		e6000sw_readreg_wrapper),
176 	DEVMETHOD(etherswitch_writereg,		e6000sw_writereg_wrapper),
177 	DEVMETHOD(etherswitch_readphyreg,	e6000sw_readphy),
178 	DEVMETHOD(etherswitch_writephyreg,	e6000sw_writephy),
179 	DEVMETHOD(etherswitch_setvgroup,	e6000sw_setvgroup_wrapper),
180 	DEVMETHOD(etherswitch_getvgroup,	e6000sw_getvgroup_wrapper),
181 
182 	DEVMETHOD_END
183 };
184 
185 DEFINE_CLASS_0(e6000sw, e6000sw_driver, e6000sw_methods,
186     sizeof(e6000sw_softc_t));
187 
188 DRIVER_MODULE(e6000sw, mdio, e6000sw_driver, 0, 0);
189 DRIVER_MODULE(etherswitch, e6000sw, etherswitch_driver, 0, 0);
190 DRIVER_MODULE(miibus, e6000sw, miibus_driver, 0, 0);
191 MODULE_DEPEND(e6000sw, mdio, 1, 1, 1);
192 
193 
194 static void
195 e6000sw_identify(driver_t *driver, device_t parent)
196 {
197 
198 	if (device_find_child(parent, "e6000sw", -1) == NULL)
199 		BUS_ADD_CHILD(parent, 0, "e6000sw", -1);
200 }
201 
202 static int
203 e6000sw_probe(device_t dev)
204 {
205 	e6000sw_softc_t *sc;
206 	const char *description;
207 	phandle_t switch_node;
208 
209 	sc = device_get_softc(dev);
210 	switch_node = ofw_bus_find_compatible(OF_finddevice("/"),
211 	    "marvell,mv88e6085");
212 	if (switch_node == 0) {
213 		switch_node = ofw_bus_find_compatible(OF_finddevice("/"),
214 		    "marvell,mv88e6190");
215 
216 		if (switch_node == 0)
217 			return (ENXIO);
218 
219 		/*
220 		 * Trust DTS and fix the port register offset for the MV88E6190
221 		 * detection bellow.
222 		 */
223 		sc->swid = MV88E6190;
224 	}
225 
226 	if (bootverbose)
227 		device_printf(dev, "Found switch_node: 0x%x\n", switch_node);
228 
229 	sc->dev = dev;
230 	sc->node = switch_node;
231 
232 	if (OF_getencprop(sc->node, "reg", &sc->sw_addr,
233 	    sizeof(sc->sw_addr)) < 0)
234 		return (ENXIO);
235 	if (sc->sw_addr < 0 || sc->sw_addr > 32)
236 		return (ENXIO);
237 
238 	/*
239 	 * Create temporary lock, just to satisfy assertions,
240 	 * when obtaining the switch ID. Destroy immediately afterwards.
241 	 */
242 	sx_init(&sc->sx, "e6000sw_tmp");
243 	E6000SW_LOCK(sc);
244 	sc->swid = e6000sw_readreg(sc, REG_PORT(sc, 0), SWITCH_ID) & 0xfff0;
245 	E6000SW_UNLOCK(sc);
246 	sx_destroy(&sc->sx);
247 
248 	switch (sc->swid) {
249 	case MV88E6141:
250 		description = "Marvell 88E6141";
251 		sc->phy_base = 0x10;
252 		sc->num_ports = 6;
253 		break;
254 	case MV88E6341:
255 		description = "Marvell 88E6341";
256 		sc->phy_base = 0x10;
257 		sc->num_ports = 6;
258 		break;
259 	case MV88E6352:
260 		description = "Marvell 88E6352";
261 		sc->num_ports = 7;
262 		break;
263 	case MV88E6172:
264 		description = "Marvell 88E6172";
265 		sc->num_ports = 7;
266 		break;
267 	case MV88E6176:
268 		description = "Marvell 88E6176";
269 		sc->num_ports = 7;
270 		break;
271 	case MV88E6190:
272 		description = "Marvell 88E6190";
273 		sc->num_ports = 11;
274 		break;
275 	default:
276 		device_printf(dev, "Unrecognized device, id 0x%x.\n", sc->swid);
277 		return (ENXIO);
278 	}
279 
280 	device_set_desc(dev, description);
281 
282 	return (BUS_PROBE_DEFAULT);
283 }
284 
285 static int
286 e6000sw_parse_fixed_link(e6000sw_softc_t *sc, phandle_t node, uint32_t port)
287 {
288 	int speed;
289 	phandle_t fixed_link;
290 
291 	fixed_link = ofw_bus_find_child(node, "fixed-link");
292 
293 	if (fixed_link != 0) {
294 		sc->fixed_mask |= (1 << port);
295 
296 		if (OF_getencprop(fixed_link,
297 		    "speed", &speed, sizeof(speed)) < 0) {
298 			device_printf(sc->dev,
299 			    "Port %d has a fixed-link node without a speed "
300 			    "property\n", port);
301 			return (ENXIO);
302 		}
303 		if (speed == 2500 && (MVSWITCH(sc, MV88E6141) ||
304 		     MVSWITCH(sc, MV88E6341) || MVSWITCH(sc, MV88E6190)))
305 			sc->fixed25_mask |= (1 << port);
306 	}
307 
308 	return (0);
309 }
310 
311 static int
312 e6000sw_parse_ethernet(e6000sw_softc_t *sc, phandle_t port_handle, uint32_t port) {
313 	phandle_t switch_eth, switch_eth_handle;
314 
315 	if (OF_getencprop(port_handle, "ethernet", (void*)&switch_eth_handle,
316 	    sizeof(switch_eth_handle)) > 0) {
317 		if (switch_eth_handle > 0) {
318 			switch_eth = OF_node_from_xref(switch_eth_handle);
319 
320 			device_printf(sc->dev, "CPU port at %d\n", port);
321 			sc->cpuports_mask |= (1 << port);
322 
323 			return (e6000sw_parse_fixed_link(sc, switch_eth, port));
324 		} else
325 			device_printf(sc->dev,
326 				"Port %d has ethernet property but it points "
327 				"to an invalid location\n", port);
328 	}
329 
330 	return (0);
331 }
332 
333 static int
334 e6000sw_parse_child_fdt(e6000sw_softc_t *sc, phandle_t child, int *pport)
335 {
336 	uint32_t port;
337 
338 	if (pport == NULL)
339 		return (ENXIO);
340 
341 	if (OF_getencprop(child, "reg", (void *)&port, sizeof(port)) < 0)
342 		return (ENXIO);
343 	if (port >= sc->num_ports)
344 		return (ENXIO);
345 	*pport = port;
346 
347 	if (e6000sw_parse_fixed_link(sc, child, port) != 0)
348 		return (ENXIO);
349 
350 	if (e6000sw_parse_ethernet(sc, child, port) != 0)
351 		return (ENXIO);
352 
353 	if ((sc->fixed_mask & (1 << port)) != 0)
354 		device_printf(sc->dev, "fixed port at %d\n", port);
355 	else
356 		device_printf(sc->dev, "PHY at port %d\n", port);
357 
358 	return (0);
359 }
360 
361 static int
362 e6000sw_init_interface(e6000sw_softc_t *sc, int port)
363 {
364 	char name[IFNAMSIZ];
365 
366 	snprintf(name, IFNAMSIZ, "%sport", device_get_nameunit(sc->dev));
367 
368 	sc->ifp[port] = if_alloc(IFT_ETHER);
369 	if (sc->ifp[port] == NULL)
370 		return (ENOMEM);
371 	sc->ifp[port]->if_softc = sc;
372 	sc->ifp[port]->if_flags |= IFF_UP | IFF_BROADCAST |
373 	    IFF_DRV_RUNNING | IFF_SIMPLEX;
374 	sc->ifname[port] = malloc(strlen(name) + 1, M_E6000SW, M_NOWAIT);
375 	if (sc->ifname[port] == NULL) {
376 		if_free(sc->ifp[port]);
377 		return (ENOMEM);
378 	}
379 	memcpy(sc->ifname[port], name, strlen(name) + 1);
380 	if_initname(sc->ifp[port], sc->ifname[port], port);
381 
382 	return (0);
383 }
384 
385 static int
386 e6000sw_attach_miibus(e6000sw_softc_t *sc, int port)
387 {
388 	int err;
389 
390 	err = mii_attach(sc->dev, &sc->miibus[port], sc->ifp[port],
391 	    e6000sw_ifmedia_upd, e6000sw_ifmedia_sts, BMSR_DEFCAPMASK,
392 	    port + sc->phy_base, MII_OFFSET_ANY, 0);
393 	if (err != 0)
394 		return (err);
395 
396 	return (0);
397 }
398 
399 static void
400 e6000sw_serdes_power(device_t dev, int port, bool sgmii)
401 {
402 	uint32_t reg;
403 
404 	/* SGMII */
405 	reg = e6000sw_read_xmdio(dev, port, E6000SW_SERDES_DEV,
406 	    E6000SW_SERDES_SGMII_CTL);
407 	if (sgmii)
408 		reg &= ~E6000SW_SERDES_PDOWN;
409 	else
410 		reg |= E6000SW_SERDES_PDOWN;
411 	e6000sw_write_xmdio(dev, port, E6000SW_SERDES_DEV,
412 	    E6000SW_SERDES_SGMII_CTL, reg);
413 
414 	/* 10GBASE-R/10GBASE-X4/X2 */
415 	reg = e6000sw_read_xmdio(dev, port, E6000SW_SERDES_DEV,
416 	    E6000SW_SERDES_PCS_CTL1);
417 	if (sgmii)
418 		reg |= E6000SW_SERDES_PDOWN;
419 	else
420 		reg &= ~E6000SW_SERDES_PDOWN;
421 	e6000sw_write_xmdio(dev, port, E6000SW_SERDES_DEV,
422 	    E6000SW_SERDES_PCS_CTL1, reg);
423 }
424 
425 static int
426 e6000sw_attach(device_t dev)
427 {
428 	bool sgmii;
429 	e6000sw_softc_t *sc;
430 	phandle_t child, ports;
431 	int err, port;
432 	uint32_t reg;
433 
434 	err = 0;
435 	sc = device_get_softc(dev);
436 
437 	/*
438 	 * According to the Linux source code, all of the Switch IDs we support
439 	 * are multi_chip capable, and should go into multi-chip mode if the
440 	 * sw_addr != 0.
441 	 */
442 	if (MVSWITCH_MULTICHIP(sc))
443 		device_printf(dev, "multi-chip addressing mode (%#x)\n",
444 		    sc->sw_addr);
445 	else
446 		device_printf(dev, "single-chip addressing mode\n");
447 
448 	sx_init(&sc->sx, "e6000sw");
449 
450 	E6000SW_LOCK(sc);
451 	e6000sw_setup(dev, sc);
452 	ports = ofw_bus_find_child(sc->node, "ports");
453 	sc->sc_tq = taskqueue_create("e6000sw_taskq", M_NOWAIT,
454 	    taskqueue_thread_enqueue, &sc->sc_tq);
455 
456 	TIMEOUT_TASK_INIT(sc->sc_tq, &sc->sc_tt, 0, e6000sw_tick, sc);
457 	taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
458 	    device_get_nameunit(dev));
459 
460 	if (ports == 0) {
461 		device_printf(dev, "failed to parse DTS: no ports found for "
462 		    "switch\n");
463 		E6000SW_UNLOCK(sc);
464 		return (ENXIO);
465 	}
466 
467 	for (child = OF_child(ports); child != 0; child = OF_peer(child)) {
468 		err = e6000sw_parse_child_fdt(sc, child, &port);
469 		if (err != 0) {
470 			device_printf(sc->dev, "failed to parse DTS\n");
471 			goto out_fail;
472 		}
473 
474 		/* Port is in use. */
475 		sc->ports_mask |= (1 << port);
476 
477 		err = e6000sw_init_interface(sc, port);
478 		if (err != 0) {
479 			device_printf(sc->dev, "failed to init interface\n");
480 			goto out_fail;
481 		}
482 
483 		if (e6000sw_is_fixedport(sc, port)) {
484 			/* Link must be down to change speed force value. */
485 			reg = e6000sw_readreg(sc, REG_PORT(sc, port),
486 			    PSC_CONTROL);
487 			reg &= ~PSC_CONTROL_LINK_UP;
488 			reg |= PSC_CONTROL_FORCED_LINK;
489 			e6000sw_writereg(sc, REG_PORT(sc, port), PSC_CONTROL,
490 			    reg);
491 
492 			/*
493 			 * Force speed, full-duplex, EEE off and flow-control
494 			 * on.
495 			 */
496 			reg &= ~(PSC_CONTROL_SPD2500 | PSC_CONTROL_ALT_SPD |
497 			    PSC_CONTROL_FORCED_FC | PSC_CONTROL_FC_ON |
498 			    PSC_CONTROL_FORCED_EEE);
499 			if (e6000sw_is_fixed25port(sc, port))
500 				reg |= PSC_CONTROL_SPD2500;
501 			else
502 				reg |= PSC_CONTROL_SPD1000;
503 			if (MVSWITCH(sc, MV88E6190) &&
504 			    e6000sw_is_fixed25port(sc, port))
505 				reg |= PSC_CONTROL_ALT_SPD;
506 			reg |= PSC_CONTROL_FORCED_DPX | PSC_CONTROL_FULLDPX |
507 			    PSC_CONTROL_FORCED_LINK | PSC_CONTROL_LINK_UP |
508 			    PSC_CONTROL_FORCED_SPD;
509 			if (!MVSWITCH(sc, MV88E6190))
510 				reg |= PSC_CONTROL_FORCED_FC | PSC_CONTROL_FC_ON;
511 			if (MVSWITCH(sc, MV88E6141) ||
512 			    MVSWITCH(sc, MV88E6341) ||
513 			    MVSWITCH(sc, MV88E6190))
514 				reg |= PSC_CONTROL_FORCED_EEE;
515 			e6000sw_writereg(sc, REG_PORT(sc, port), PSC_CONTROL,
516 			    reg);
517 			/* Power on the SERDES interfaces. */
518 			if (MVSWITCH(sc, MV88E6190) &&
519 			    (port == 9 || port == 10)) {
520 				if (e6000sw_is_fixed25port(sc, port))
521 					sgmii = false;
522 				else
523 					sgmii = true;
524 				e6000sw_serdes_power(sc->dev, port, sgmii);
525 			}
526 		}
527 
528 		/* Don't attach miibus at CPU/fixed ports */
529 		if (!e6000sw_is_phyport(sc, port))
530 			continue;
531 
532 		err = e6000sw_attach_miibus(sc, port);
533 		if (err != 0) {
534 			device_printf(sc->dev, "failed to attach miibus\n");
535 			goto out_fail;
536 		}
537 	}
538 
539 	etherswitch_info.es_nports = sc->num_ports;
540 
541 	/* Default to port vlan. */
542 	e6000sw_set_vlan_mode(sc, ETHERSWITCH_VLAN_PORT);
543 
544 	reg = e6000sw_readreg(sc, REG_GLOBAL, SWITCH_GLOBAL_STATUS);
545 	if (reg & SWITCH_GLOBAL_STATUS_IR)
546 		device_printf(dev, "switch is ready.\n");
547 	E6000SW_UNLOCK(sc);
548 
549 	bus_generic_probe(dev);
550 	bus_generic_attach(dev);
551 
552 	taskqueue_enqueue_timeout(sc->sc_tq, &sc->sc_tt, hz);
553 
554 	return (0);
555 
556 out_fail:
557 	e6000sw_detach(dev);
558 
559 	return (err);
560 }
561 
562 static int
563 e6000sw_waitready(e6000sw_softc_t *sc, uint32_t phy, uint32_t reg,
564     uint32_t busybit)
565 {
566 	int i;
567 
568 	for (i = 0; i < E6000SW_RETRIES; i++) {
569 		if ((e6000sw_readreg(sc, phy, reg) & busybit) == 0)
570 			return (0);
571 		DELAY(1);
572 	}
573 
574 	return (1);
575 }
576 
577 /* XMDIO/Clause 45 access. */
578 static int
579 e6000sw_read_xmdio(device_t dev, int phy, int devaddr, int devreg)
580 {
581 	e6000sw_softc_t *sc;
582 	uint32_t reg;
583 
584 	sc = device_get_softc(dev);
585 	E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
586 	if (E6000SW_WAITREADY2(sc, SMI_PHY_CMD_REG, SMI_CMD_BUSY)) {
587 		device_printf(dev, "Timeout while waiting for switch\n");
588 		return (ETIMEDOUT);
589 	}
590 
591 	reg = devaddr & SMI_CMD_REG_ADDR_MASK;
592 	reg |= (phy << SMI_CMD_DEV_ADDR) & SMI_CMD_DEV_ADDR_MASK;
593 
594 	/* Load C45 register address. */
595 	e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_DATA_REG, devreg);
596 	e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_CMD_REG,
597 	    reg | SMI_CMD_OP_C45_ADDR);
598 	if (E6000SW_WAITREADY2(sc, SMI_PHY_CMD_REG, SMI_CMD_BUSY)) {
599 		device_printf(dev, "Timeout while waiting for switch\n");
600 		return (ETIMEDOUT);
601 	}
602 
603 	/* Start C45 read operation. */
604 	e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_CMD_REG,
605 	    reg | SMI_CMD_OP_C45_READ);
606 	if (E6000SW_WAITREADY2(sc, SMI_PHY_CMD_REG, SMI_CMD_BUSY)) {
607 		device_printf(dev, "Timeout while waiting for switch\n");
608 		return (ETIMEDOUT);
609 	}
610 
611 	/* Read C45 data. */
612 	reg = e6000sw_readreg(sc, REG_GLOBAL2, SMI_PHY_DATA_REG);
613 
614 	return (reg & PHY_DATA_MASK);
615 }
616 
617 static int
618 e6000sw_write_xmdio(device_t dev, int phy, int devaddr, int devreg, int val)
619 {
620 	e6000sw_softc_t *sc;
621 	uint32_t reg;
622 
623 	sc = device_get_softc(dev);
624 	E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
625 	if (E6000SW_WAITREADY2(sc, SMI_PHY_CMD_REG, SMI_CMD_BUSY)) {
626 		device_printf(dev, "Timeout while waiting for switch\n");
627 		return (ETIMEDOUT);
628 	}
629 
630 	reg = devaddr & SMI_CMD_REG_ADDR_MASK;
631 	reg |= (phy << SMI_CMD_DEV_ADDR) & SMI_CMD_DEV_ADDR_MASK;
632 
633 	/* Load C45 register address. */
634 	e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_DATA_REG, devreg);
635 	e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_CMD_REG,
636 	    reg | SMI_CMD_OP_C45_ADDR);
637 	if (E6000SW_WAITREADY2(sc, SMI_PHY_CMD_REG, SMI_CMD_BUSY)) {
638 		device_printf(dev, "Timeout while waiting for switch\n");
639 		return (ETIMEDOUT);
640 	}
641 
642 	/* Load data and start the C45 write operation. */
643 	e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_DATA_REG, devreg);
644 	e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_CMD_REG,
645 	    reg | SMI_CMD_OP_C45_WRITE);
646 
647 	return (0);
648 }
649 
650 static int e6000sw_readphy(device_t dev, int phy, int reg)
651 {
652 	e6000sw_softc_t *sc;
653 	int ret;
654 
655 	sc = device_get_softc(dev);
656 	E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
657 
658 	E6000SW_LOCK(sc);
659 	ret = e6000sw_readphy_locked(dev, phy, reg);
660 	E6000SW_UNLOCK(sc);
661 
662 	return (ret);
663 }
664 
665 /*
666  * PHY registers are paged. Put page index in reg 22 (accessible from every
667  * page), then access specific register.
668  */
669 static int
670 e6000sw_readphy_locked(device_t dev, int phy, int reg)
671 {
672 	e6000sw_softc_t *sc;
673 	uint32_t val;
674 
675 	sc = device_get_softc(dev);
676 	E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
677 
678 	if (!e6000sw_is_phyport(sc, phy) || reg >= E6000SW_NUM_PHY_REGS) {
679 		device_printf(dev, "Wrong register address.\n");
680 		return (EINVAL);
681 	}
682 
683 	if (E6000SW_WAITREADY2(sc, SMI_PHY_CMD_REG, SMI_CMD_BUSY)) {
684 		device_printf(dev, "Timeout while waiting for switch\n");
685 		return (ETIMEDOUT);
686 	}
687 
688 	e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_CMD_REG,
689 	    SMI_CMD_OP_C22_READ | (reg & SMI_CMD_REG_ADDR_MASK) |
690 	    ((phy << SMI_CMD_DEV_ADDR) & SMI_CMD_DEV_ADDR_MASK));
691 	if (E6000SW_WAITREADY2(sc, SMI_PHY_CMD_REG, SMI_CMD_BUSY)) {
692 		device_printf(dev, "Timeout while waiting for switch\n");
693 		return (ETIMEDOUT);
694 	}
695 
696 	val = e6000sw_readreg(sc, REG_GLOBAL2, SMI_PHY_DATA_REG);
697 
698 	return (val & PHY_DATA_MASK);
699 }
700 
701 static int e6000sw_writephy(device_t dev, int phy, int reg, int data)
702 {
703 	e6000sw_softc_t *sc;
704 	int ret;
705 
706 	sc = device_get_softc(dev);
707 	E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
708 
709 	E6000SW_LOCK(sc);
710 	ret = e6000sw_writephy_locked(dev, phy, reg, data);
711 	E6000SW_UNLOCK(sc);
712 
713 	return (ret);
714 }
715 
716 static int
717 e6000sw_writephy_locked(device_t dev, int phy, int reg, int data)
718 {
719 	e6000sw_softc_t *sc;
720 
721 	sc = device_get_softc(dev);
722 	E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
723 
724 	if (!e6000sw_is_phyport(sc, phy) || reg >= E6000SW_NUM_PHY_REGS) {
725 		device_printf(dev, "Wrong register address.\n");
726 		return (EINVAL);
727 	}
728 
729 	if (E6000SW_WAITREADY2(sc, SMI_PHY_CMD_REG, SMI_CMD_BUSY)) {
730 		device_printf(dev, "Timeout while waiting for switch\n");
731 		return (ETIMEDOUT);
732 	}
733 
734 	e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_DATA_REG,
735 	    data & PHY_DATA_MASK);
736 	e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_CMD_REG,
737 	    SMI_CMD_OP_C22_WRITE | (reg & SMI_CMD_REG_ADDR_MASK) |
738 	    ((phy << SMI_CMD_DEV_ADDR) & SMI_CMD_DEV_ADDR_MASK));
739 
740 	return (0);
741 }
742 
743 static int
744 e6000sw_detach(device_t dev)
745 {
746 	int phy;
747 	e6000sw_softc_t *sc;
748 
749 	sc = device_get_softc(dev);
750 
751 	if (device_is_attached(dev))
752 		taskqueue_drain_timeout(sc->sc_tq, &sc->sc_tt);
753 
754 	if (sc->sc_tq != NULL)
755 		taskqueue_free(sc->sc_tq);
756 
757 	device_delete_children(dev);
758 
759 	sx_destroy(&sc->sx);
760 	for (phy = 0; phy < sc->num_ports; phy++) {
761 		if (sc->ifp[phy] != NULL)
762 			if_free(sc->ifp[phy]);
763 		if (sc->ifname[phy] != NULL)
764 			free(sc->ifname[phy], M_E6000SW);
765 	}
766 
767 	return (0);
768 }
769 
770 static etherswitch_info_t*
771 e6000sw_getinfo(device_t dev)
772 {
773 
774 	return (&etherswitch_info);
775 }
776 
777 static int
778 e6000sw_getconf(device_t dev, etherswitch_conf_t *conf)
779 {
780 	struct e6000sw_softc *sc;
781 
782 	/* Return the VLAN mode. */
783 	sc = device_get_softc(dev);
784 	conf->cmd = ETHERSWITCH_CONF_VLAN_MODE;
785 	conf->vlan_mode = sc->vlan_mode;
786 
787 	return (0);
788 }
789 
790 static int
791 e6000sw_setconf(device_t dev, etherswitch_conf_t *conf)
792 {
793 	struct e6000sw_softc *sc;
794 
795 	/* Set the VLAN mode. */
796 	sc = device_get_softc(dev);
797 	if (conf->cmd & ETHERSWITCH_CONF_VLAN_MODE) {
798 		E6000SW_LOCK(sc);
799 		e6000sw_set_vlan_mode(sc, conf->vlan_mode);
800 		E6000SW_UNLOCK(sc);
801 	}
802 
803 	return (0);
804 }
805 
806 static void
807 e6000sw_lock(device_t dev)
808 {
809 	struct e6000sw_softc *sc;
810 
811 	sc = device_get_softc(dev);
812 
813 	E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
814 	E6000SW_LOCK(sc);
815 }
816 
817 static void
818 e6000sw_unlock(device_t dev)
819 {
820 	struct e6000sw_softc *sc;
821 
822 	sc = device_get_softc(dev);
823 
824 	E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
825 	E6000SW_UNLOCK(sc);
826 }
827 
828 static int
829 e6000sw_getport(device_t dev, etherswitch_port_t *p)
830 {
831 	struct mii_data *mii;
832 	int err;
833 	struct ifmediareq *ifmr;
834 	uint32_t reg;
835 
836 	e6000sw_softc_t *sc = device_get_softc(dev);
837 	E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
838 
839 	if (p->es_port >= sc->num_ports || p->es_port < 0)
840 		return (EINVAL);
841 	if (!e6000sw_is_portenabled(sc, p->es_port))
842 		return (0);
843 
844 	E6000SW_LOCK(sc);
845 	e6000sw_get_pvid(sc, p->es_port, &p->es_pvid);
846 
847 	/* Port flags. */
848 	reg = e6000sw_readreg(sc, REG_PORT(sc, p->es_port), PORT_CONTROL2);
849 	if (reg & PORT_CONTROL2_DISC_TAGGED)
850 		p->es_flags |= ETHERSWITCH_PORT_DROPTAGGED;
851 	if (reg & PORT_CONTROL2_DISC_UNTAGGED)
852 		p->es_flags |= ETHERSWITCH_PORT_DROPUNTAGGED;
853 
854 	err = 0;
855 	if (e6000sw_is_fixedport(sc, p->es_port)) {
856 		if (e6000sw_is_cpuport(sc, p->es_port))
857 			p->es_flags |= ETHERSWITCH_PORT_CPU;
858 		ifmr = &p->es_ifmr;
859 		ifmr->ifm_status = IFM_ACTIVE | IFM_AVALID;
860 		ifmr->ifm_count = 0;
861 		if (e6000sw_is_fixed25port(sc, p->es_port))
862 			ifmr->ifm_active = IFM_2500_T;
863 		else
864 			ifmr->ifm_active = IFM_1000_T;
865 		ifmr->ifm_active |= IFM_ETHER | IFM_FDX;
866 		ifmr->ifm_current = ifmr->ifm_active;
867 		ifmr->ifm_mask = 0;
868 	} else {
869 		mii = e6000sw_miiforphy(sc, p->es_port);
870 		err = ifmedia_ioctl(mii->mii_ifp, &p->es_ifr,
871 		    &mii->mii_media, SIOCGIFMEDIA);
872 	}
873 	E6000SW_UNLOCK(sc);
874 
875 	return (err);
876 }
877 
878 static int
879 e6000sw_setport(device_t dev, etherswitch_port_t *p)
880 {
881 	e6000sw_softc_t *sc;
882 	int err;
883 	struct mii_data *mii;
884 	uint32_t reg;
885 
886 	sc = device_get_softc(dev);
887 	E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
888 
889 	if (p->es_port >= sc->num_ports || p->es_port < 0)
890 		return (EINVAL);
891 	if (!e6000sw_is_portenabled(sc, p->es_port))
892 		return (0);
893 
894 	E6000SW_LOCK(sc);
895 
896 	/* Port flags. */
897 	reg = e6000sw_readreg(sc, REG_PORT(sc, p->es_port), PORT_CONTROL2);
898 	if (p->es_flags & ETHERSWITCH_PORT_DROPTAGGED)
899 		reg |= PORT_CONTROL2_DISC_TAGGED;
900 	else
901 		reg &= ~PORT_CONTROL2_DISC_TAGGED;
902 	if (p->es_flags & ETHERSWITCH_PORT_DROPUNTAGGED)
903 		reg |= PORT_CONTROL2_DISC_UNTAGGED;
904 	else
905 		reg &= ~PORT_CONTROL2_DISC_UNTAGGED;
906 	e6000sw_writereg(sc, REG_PORT(sc, p->es_port), PORT_CONTROL2, reg);
907 
908 	err = 0;
909 	if (p->es_pvid != 0)
910 		e6000sw_set_pvid(sc, p->es_port, p->es_pvid);
911 	if (e6000sw_is_phyport(sc, p->es_port)) {
912 		mii = e6000sw_miiforphy(sc, p->es_port);
913 		err = ifmedia_ioctl(mii->mii_ifp, &p->es_ifr, &mii->mii_media,
914 		    SIOCSIFMEDIA);
915 	}
916 	E6000SW_UNLOCK(sc);
917 
918 	return (err);
919 }
920 
921 static __inline void
922 e6000sw_port_vlan_assign(e6000sw_softc_t *sc, int port, uint32_t fid,
923     uint32_t members)
924 {
925 	uint32_t reg;
926 
927 	reg = e6000sw_readreg(sc, REG_PORT(sc, port), PORT_VLAN_MAP);
928 	reg &= ~(PORT_MASK(sc) | PORT_VLAN_MAP_FID_MASK);
929 	reg |= members & PORT_MASK(sc) & ~(1 << port);
930 	reg |= (fid << PORT_VLAN_MAP_FID) & PORT_VLAN_MAP_FID_MASK;
931 	e6000sw_writereg(sc, REG_PORT(sc, port), PORT_VLAN_MAP, reg);
932 	reg = e6000sw_readreg(sc, REG_PORT(sc, port), PORT_CONTROL1);
933 	reg &= ~PORT_CONTROL1_FID_MASK;
934 	reg |= (fid >> 4) & PORT_CONTROL1_FID_MASK;
935 	e6000sw_writereg(sc, REG_PORT(sc, port), PORT_CONTROL1, reg);
936 }
937 
938 static int
939 e6000sw_init_vlan(struct e6000sw_softc *sc)
940 {
941 	int i, port, ret;
942 	uint32_t members;
943 
944 	/* Disable all ports */
945 	for (port = 0; port < sc->num_ports; port++) {
946 		ret = e6000sw_readreg(sc, REG_PORT(sc, port), PORT_CONTROL);
947 		e6000sw_writereg(sc, REG_PORT(sc, port), PORT_CONTROL,
948 		    (ret & ~PORT_CONTROL_ENABLE));
949 	}
950 
951 	/* Flush VTU. */
952 	e6000sw_vtu_flush(sc);
953 
954 	for (port = 0; port < sc->num_ports; port++) {
955 		/* Reset the egress and frame mode. */
956 		ret = e6000sw_readreg(sc, REG_PORT(sc, port), PORT_CONTROL);
957 		ret &= ~(PORT_CONTROL_EGRESS | PORT_CONTROL_FRAME);
958 		e6000sw_writereg(sc, REG_PORT(sc, port), PORT_CONTROL, ret);
959 
960 		/* Set the 802.1q mode. */
961 		ret = e6000sw_readreg(sc, REG_PORT(sc, port), PORT_CONTROL2);
962 		ret &= ~PORT_CONTROL2_DOT1Q;
963 		if (sc->vlan_mode == ETHERSWITCH_VLAN_DOT1Q)
964 			ret |= PORT_CONTROL2_DOT1Q;
965 		e6000sw_writereg(sc, REG_PORT(sc, port), PORT_CONTROL2, ret);
966 	}
967 
968 	for (port = 0; port < sc->num_ports; port++) {
969 		if (!e6000sw_is_portenabled(sc, port))
970 			continue;
971 
972 		ret = e6000sw_readreg(sc, REG_PORT(sc, port), PORT_VID);
973 
974 		/* Set port priority */
975 		ret &= ~PORT_VID_PRIORITY_MASK;
976 
977 		/* Set VID map */
978 		ret &= ~PORT_VID_DEF_VID_MASK;
979 		if (sc->vlan_mode == ETHERSWITCH_VLAN_DOT1Q)
980 			ret |= 1;
981 		else
982 			ret |= (port + 1);
983 		e6000sw_writereg(sc, REG_PORT(sc, port), PORT_VID, ret);
984 	}
985 
986 	/* Assign the member ports to each origin port. */
987 	for (port = 0; port < sc->num_ports; port++) {
988 		members = 0;
989 		if (e6000sw_is_portenabled(sc, port)) {
990 			for (i = 0; i < sc->num_ports; i++) {
991 				if (i == port || !e6000sw_is_portenabled(sc, i))
992 					continue;
993 				members |= (1 << i);
994 			}
995 		}
996 		/* Default to FID 0. */
997 		e6000sw_port_vlan_assign(sc, port, 0, members);
998 	}
999 
1000 	/* Reset internal VLAN table. */
1001 	for (i = 0; i < nitems(sc->vlans); i++)
1002 		sc->vlans[i] = 0;
1003 
1004 	/* Create default VLAN (1). */
1005 	if (sc->vlan_mode == ETHERSWITCH_VLAN_DOT1Q) {
1006 		sc->vlans[0] = 1;
1007 		e6000sw_vtu_update(sc, 0, sc->vlans[0], 1, 0, sc->ports_mask);
1008 	}
1009 
1010 	/* Enable all ports */
1011 	for (port = 0; port < sc->num_ports; port++) {
1012 		if (!e6000sw_is_portenabled(sc, port))
1013 			continue;
1014 		ret = e6000sw_readreg(sc, REG_PORT(sc, port), PORT_CONTROL);
1015 		e6000sw_writereg(sc, REG_PORT(sc, port), PORT_CONTROL,
1016 		    (ret | PORT_CONTROL_ENABLE));
1017 	}
1018 
1019 	return (0);
1020 }
1021 
1022 static int
1023 e6000sw_set_vlan_mode(struct e6000sw_softc *sc, uint32_t mode)
1024 {
1025 
1026 	E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
1027 	switch (mode) {
1028 	case ETHERSWITCH_VLAN_PORT:
1029 		sc->vlan_mode = ETHERSWITCH_VLAN_PORT;
1030 		etherswitch_info.es_nvlangroups = sc->num_ports;
1031 		return (e6000sw_init_vlan(sc));
1032 		break;
1033 	case ETHERSWITCH_VLAN_DOT1Q:
1034 		sc->vlan_mode = ETHERSWITCH_VLAN_DOT1Q;
1035 		etherswitch_info.es_nvlangroups = E6000SW_NUM_VLANS;
1036 		return (e6000sw_init_vlan(sc));
1037 		break;
1038 	default:
1039 		return (EINVAL);
1040 	}
1041 }
1042 
1043 /*
1044  * Registers in this switch are divided into sections, specified in
1045  * documentation. So as to access any of them, section index and reg index
1046  * is necessary. etherswitchcfg uses only one variable, so indexes were
1047  * compressed into addr_reg: 32 * section_index + reg_index.
1048  */
1049 static int
1050 e6000sw_readreg_wrapper(device_t dev, int addr_reg)
1051 {
1052 	e6000sw_softc_t *sc;
1053 
1054 	sc = device_get_softc(dev);
1055 	if ((addr_reg > (REG_GLOBAL2 * 32 + REG_NUM_MAX)) ||
1056 	    (addr_reg < (REG_PORT(sc, 0) * 32))) {
1057 		device_printf(dev, "Wrong register address.\n");
1058 		return (EINVAL);
1059 	}
1060 
1061 	return (e6000sw_readreg(device_get_softc(dev), addr_reg / 32,
1062 	    addr_reg % 32));
1063 }
1064 
1065 static int
1066 e6000sw_writereg_wrapper(device_t dev, int addr_reg, int val)
1067 {
1068 	e6000sw_softc_t *sc;
1069 
1070 	sc = device_get_softc(dev);
1071 	if ((addr_reg > (REG_GLOBAL2 * 32 + REG_NUM_MAX)) ||
1072 	    (addr_reg < (REG_PORT(sc, 0) * 32))) {
1073 		device_printf(dev, "Wrong register address.\n");
1074 		return (EINVAL);
1075 	}
1076 	e6000sw_writereg(device_get_softc(dev), addr_reg / 32,
1077 	    addr_reg % 32, val);
1078 
1079 	return (0);
1080 }
1081 
1082 /*
1083  * setvgroup/getvgroup called from etherswitchfcg need to be locked,
1084  * while internal calls do not.
1085  */
1086 static int
1087 e6000sw_setvgroup_wrapper(device_t dev, etherswitch_vlangroup_t *vg)
1088 {
1089 	e6000sw_softc_t *sc;
1090 	int ret;
1091 
1092 	sc = device_get_softc(dev);
1093 	E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
1094 
1095 	E6000SW_LOCK(sc);
1096 	ret = e6000sw_setvgroup(dev, vg);
1097 	E6000SW_UNLOCK(sc);
1098 
1099 	return (ret);
1100 }
1101 
1102 static int
1103 e6000sw_getvgroup_wrapper(device_t dev, etherswitch_vlangroup_t *vg)
1104 {
1105 	e6000sw_softc_t *sc;
1106 	int ret;
1107 
1108 	sc = device_get_softc(dev);
1109 	E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
1110 
1111 	E6000SW_LOCK(sc);
1112 	ret = e6000sw_getvgroup(dev, vg);
1113 	E6000SW_UNLOCK(sc);
1114 
1115 	return (ret);
1116 }
1117 
1118 static int
1119 e6000sw_set_port_vlan(e6000sw_softc_t *sc, etherswitch_vlangroup_t *vg)
1120 {
1121 	uint32_t port;
1122 
1123 	port = vg->es_vlangroup;
1124 	if (port > sc->num_ports)
1125 		return (EINVAL);
1126 
1127 	if (vg->es_member_ports != vg->es_untagged_ports) {
1128 		device_printf(sc->dev, "Tagged ports not supported.\n");
1129 		return (EINVAL);
1130 	}
1131 
1132 	e6000sw_port_vlan_assign(sc, port, 0, vg->es_untagged_ports);
1133 	vg->es_vid = port | ETHERSWITCH_VID_VALID;
1134 
1135 	return (0);
1136 }
1137 
1138 static int
1139 e6000sw_set_dot1q_vlan(e6000sw_softc_t *sc, etherswitch_vlangroup_t *vg)
1140 {
1141 	int i, vlan;
1142 
1143 	vlan = vg->es_vid & ETHERSWITCH_VID_MASK;
1144 
1145 	/* Set VLAN to '0' removes it from table. */
1146 	if (vlan == 0) {
1147 		e6000sw_vtu_update(sc, VTU_PURGE,
1148 		    sc->vlans[vg->es_vlangroup], 0, 0, 0);
1149 		sc->vlans[vg->es_vlangroup] = 0;
1150 		return (0);
1151 	}
1152 
1153 	/* Is this VLAN already in table ? */
1154 	for (i = 0; i < etherswitch_info.es_nvlangroups; i++)
1155 		if (i != vg->es_vlangroup && vlan == sc->vlans[i])
1156 			return (EINVAL);
1157 
1158 	sc->vlans[vg->es_vlangroup] = vlan;
1159 	e6000sw_vtu_update(sc, 0, vlan, vg->es_vlangroup + 1,
1160 	    vg->es_member_ports & sc->ports_mask,
1161 	    vg->es_untagged_ports & sc->ports_mask);
1162 
1163 	return (0);
1164 }
1165 
1166 static int
1167 e6000sw_setvgroup(device_t dev, etherswitch_vlangroup_t *vg)
1168 {
1169 	e6000sw_softc_t *sc;
1170 
1171 	sc = device_get_softc(dev);
1172 	E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
1173 
1174 	if (sc->vlan_mode == ETHERSWITCH_VLAN_PORT)
1175 		return (e6000sw_set_port_vlan(sc, vg));
1176 	else if (sc->vlan_mode == ETHERSWITCH_VLAN_DOT1Q)
1177 		return (e6000sw_set_dot1q_vlan(sc, vg));
1178 
1179 	return (EINVAL);
1180 }
1181 
1182 static int
1183 e6000sw_get_port_vlan(e6000sw_softc_t *sc, etherswitch_vlangroup_t *vg)
1184 {
1185 	uint32_t port, reg;
1186 
1187 	port = vg->es_vlangroup;
1188 	if (port > sc->num_ports)
1189 		return (EINVAL);
1190 
1191 	if (!e6000sw_is_portenabled(sc, port)) {
1192 		vg->es_vid = port;
1193 		return (0);
1194 	}
1195 
1196 	reg = e6000sw_readreg(sc, REG_PORT(sc, port), PORT_VLAN_MAP);
1197 	vg->es_untagged_ports = vg->es_member_ports = reg & PORT_MASK(sc);
1198 	vg->es_vid = port | ETHERSWITCH_VID_VALID;
1199 	vg->es_fid = (reg & PORT_VLAN_MAP_FID_MASK) >> PORT_VLAN_MAP_FID;
1200 	reg = e6000sw_readreg(sc, REG_PORT(sc, port), PORT_CONTROL1);
1201 	vg->es_fid |= (reg & PORT_CONTROL1_FID_MASK) << 4;
1202 
1203 	return (0);
1204 }
1205 
1206 static int
1207 e6000sw_get_dot1q_vlan(e6000sw_softc_t *sc, etherswitch_vlangroup_t *vg)
1208 {
1209 	int i, port;
1210 	uint32_t reg;
1211 
1212 	vg->es_fid = 0;
1213 	vg->es_vid = sc->vlans[vg->es_vlangroup];
1214 	vg->es_untagged_ports = vg->es_member_ports = 0;
1215 	if (vg->es_vid == 0)
1216 		return (0);
1217 
1218 	if (E6000SW_WAITREADY(sc, VTU_OPERATION, VTU_BUSY)) {
1219 		device_printf(sc->dev, "VTU unit is busy, cannot access\n");
1220 		return (EBUSY);
1221 	}
1222 
1223 	e6000sw_writereg(sc, REG_GLOBAL, VTU_VID, vg->es_vid - 1);
1224 
1225 	reg = e6000sw_readreg(sc, REG_GLOBAL, VTU_OPERATION);
1226 	reg &= ~VTU_OP_MASK;
1227 	reg |= VTU_GET_NEXT | VTU_BUSY;
1228 	e6000sw_writereg(sc, REG_GLOBAL, VTU_OPERATION, reg);
1229 	if (E6000SW_WAITREADY(sc, VTU_OPERATION, VTU_BUSY)) {
1230 		device_printf(sc->dev, "Timeout while reading\n");
1231 		return (EBUSY);
1232 	}
1233 
1234 	reg = e6000sw_readreg(sc, REG_GLOBAL, VTU_VID);
1235 	if (reg == VTU_VID_MASK || (reg & VTU_VID_VALID) == 0)
1236 		return (EINVAL);
1237 	if ((reg & VTU_VID_MASK) != vg->es_vid)
1238 		return (EINVAL);
1239 
1240 	vg->es_vid |= ETHERSWITCH_VID_VALID;
1241 	reg = e6000sw_readreg(sc, REG_GLOBAL, VTU_DATA);
1242 	for (i = 0; i < sc->num_ports; i++) {
1243 		if (i == VTU_PPREG(sc))
1244 			reg = e6000sw_readreg(sc, REG_GLOBAL, VTU_DATA2);
1245 		port = (reg >> VTU_PORT(sc, i)) & VTU_PORT_MASK;
1246 		if (port == VTU_PORT_UNTAGGED) {
1247 			vg->es_untagged_ports |= (1 << i);
1248 			vg->es_member_ports |= (1 << i);
1249 		} else if (port == VTU_PORT_TAGGED)
1250 			vg->es_member_ports |= (1 << i);
1251 	}
1252 
1253 	return (0);
1254 }
1255 
1256 static int
1257 e6000sw_getvgroup(device_t dev, etherswitch_vlangroup_t *vg)
1258 {
1259 	e6000sw_softc_t *sc;
1260 
1261 	sc = device_get_softc(dev);
1262 	E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
1263 
1264 	if (sc->vlan_mode == ETHERSWITCH_VLAN_PORT)
1265 		return (e6000sw_get_port_vlan(sc, vg));
1266 	else if (sc->vlan_mode == ETHERSWITCH_VLAN_DOT1Q)
1267 		return (e6000sw_get_dot1q_vlan(sc, vg));
1268 
1269 	return (EINVAL);
1270 }
1271 
1272 static __inline struct mii_data*
1273 e6000sw_miiforphy(e6000sw_softc_t *sc, unsigned int phy)
1274 {
1275 
1276 	if (!e6000sw_is_phyport(sc, phy))
1277 		return (NULL);
1278 
1279 	return (device_get_softc(sc->miibus[phy]));
1280 }
1281 
1282 static int
1283 e6000sw_ifmedia_upd(struct ifnet *ifp)
1284 {
1285 	e6000sw_softc_t *sc;
1286 	struct mii_data *mii;
1287 
1288 	sc = ifp->if_softc;
1289 	mii = e6000sw_miiforphy(sc, ifp->if_dunit);
1290 	if (mii == NULL)
1291 		return (ENXIO);
1292 	mii_mediachg(mii);
1293 
1294 	return (0);
1295 }
1296 
1297 static void
1298 e6000sw_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
1299 {
1300 	e6000sw_softc_t *sc;
1301 	struct mii_data *mii;
1302 
1303 	sc = ifp->if_softc;
1304 	mii = e6000sw_miiforphy(sc, ifp->if_dunit);
1305 
1306 	if (mii == NULL)
1307 		return;
1308 
1309 	mii_pollstat(mii);
1310 	ifmr->ifm_active = mii->mii_media_active;
1311 	ifmr->ifm_status = mii->mii_media_status;
1312 }
1313 
1314 static int
1315 e6000sw_smi_waitready(e6000sw_softc_t *sc, int phy)
1316 {
1317 	int i;
1318 
1319 	for (i = 0; i < E6000SW_SMI_TIMEOUT; i++) {
1320 		if ((MDIO_READ(sc->dev, phy, SMI_CMD) & SMI_CMD_BUSY) == 0)
1321 			return (0);
1322 		DELAY(1);
1323 	}
1324 
1325 	return (1);
1326 }
1327 
1328 static __inline uint32_t
1329 e6000sw_readreg(e6000sw_softc_t *sc, int addr, int reg)
1330 {
1331 
1332 	E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
1333 
1334 	if (!MVSWITCH_MULTICHIP(sc))
1335 		return (MDIO_READ(sc->dev, addr, reg) & 0xffff);
1336 
1337 	if (e6000sw_smi_waitready(sc, sc->sw_addr)) {
1338 		printf("e6000sw: readreg timeout\n");
1339 		return (0xffff);
1340 	}
1341 	MDIO_WRITE(sc->dev, sc->sw_addr, SMI_CMD,
1342 	    SMI_CMD_OP_C22_READ | (reg & SMI_CMD_REG_ADDR_MASK) |
1343 	    ((addr << SMI_CMD_DEV_ADDR) & SMI_CMD_DEV_ADDR_MASK));
1344 	if (e6000sw_smi_waitready(sc, sc->sw_addr)) {
1345 		printf("e6000sw: readreg timeout\n");
1346 		return (0xffff);
1347 	}
1348 
1349 	return (MDIO_READ(sc->dev, sc->sw_addr, SMI_DATA) & 0xffff);
1350 }
1351 
1352 static __inline void
1353 e6000sw_writereg(e6000sw_softc_t *sc, int addr, int reg, int val)
1354 {
1355 
1356 	E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
1357 
1358 	if (!MVSWITCH_MULTICHIP(sc)) {
1359 		MDIO_WRITE(sc->dev, addr, reg, val);
1360 		return;
1361 	}
1362 
1363 	if (e6000sw_smi_waitready(sc, sc->sw_addr)) {
1364 		printf("e6000sw: readreg timeout\n");
1365 		return;
1366 	}
1367 	MDIO_WRITE(sc->dev, sc->sw_addr, SMI_DATA, val);
1368 	MDIO_WRITE(sc->dev, sc->sw_addr, SMI_CMD,
1369 	    SMI_CMD_OP_C22_WRITE | (reg & SMI_CMD_REG_ADDR_MASK) |
1370 	    ((addr << SMI_CMD_DEV_ADDR) & SMI_CMD_DEV_ADDR_MASK));
1371 }
1372 
1373 static __inline bool
1374 e6000sw_is_cpuport(e6000sw_softc_t *sc, int port)
1375 {
1376 
1377 	return ((sc->cpuports_mask & (1 << port)) ? true : false);
1378 }
1379 
1380 static __inline bool
1381 e6000sw_is_fixedport(e6000sw_softc_t *sc, int port)
1382 {
1383 
1384 	return ((sc->fixed_mask & (1 << port)) ? true : false);
1385 }
1386 
1387 static __inline bool
1388 e6000sw_is_fixed25port(e6000sw_softc_t *sc, int port)
1389 {
1390 
1391 	return ((sc->fixed25_mask & (1 << port)) ? true : false);
1392 }
1393 
1394 static __inline bool
1395 e6000sw_is_phyport(e6000sw_softc_t *sc, int port)
1396 {
1397 	uint32_t phy_mask;
1398 	phy_mask = ~(sc->fixed_mask | sc->cpuports_mask);
1399 
1400 	return ((phy_mask & (1 << port)) ? true : false);
1401 }
1402 
1403 static __inline bool
1404 e6000sw_is_portenabled(e6000sw_softc_t *sc, int port)
1405 {
1406 
1407 	return ((sc->ports_mask & (1 << port)) ? true : false);
1408 }
1409 
1410 static __inline void
1411 e6000sw_set_pvid(e6000sw_softc_t *sc, int port, int pvid)
1412 {
1413 	uint32_t reg;
1414 
1415 	reg = e6000sw_readreg(sc, REG_PORT(sc, port), PORT_VID);
1416 	reg &= ~PORT_VID_DEF_VID_MASK;
1417 	reg |= (pvid & PORT_VID_DEF_VID_MASK);
1418 	e6000sw_writereg(sc, REG_PORT(sc, port), PORT_VID, reg);
1419 }
1420 
1421 static __inline int
1422 e6000sw_get_pvid(e6000sw_softc_t *sc, int port, int *pvid)
1423 {
1424 
1425 	if (pvid == NULL)
1426 		return (ENXIO);
1427 
1428 	*pvid = e6000sw_readreg(sc, REG_PORT(sc, port), PORT_VID) &
1429 	    PORT_VID_DEF_VID_MASK;
1430 
1431 	return (0);
1432 }
1433 
1434 /*
1435  * Convert port status to ifmedia.
1436  */
1437 static void
1438 e6000sw_update_ifmedia(uint16_t portstatus, u_int *media_status, u_int *media_active)
1439 {
1440 	*media_active = IFM_ETHER;
1441 	*media_status = IFM_AVALID;
1442 
1443 	if ((portstatus & PORT_STATUS_LINK_MASK) != 0)
1444 		*media_status |= IFM_ACTIVE;
1445 	else {
1446 		*media_active |= IFM_NONE;
1447 		return;
1448 	}
1449 
1450 	switch (portstatus & PORT_STATUS_SPEED_MASK) {
1451 	case PORT_STATUS_SPEED_10:
1452 		*media_active |= IFM_10_T;
1453 		break;
1454 	case PORT_STATUS_SPEED_100:
1455 		*media_active |= IFM_100_TX;
1456 		break;
1457 	case PORT_STATUS_SPEED_1000:
1458 		*media_active |= IFM_1000_T;
1459 		break;
1460 	}
1461 
1462 	if ((portstatus & PORT_STATUS_DUPLEX_MASK) == 0)
1463 		*media_active |= IFM_FDX;
1464 	else
1465 		*media_active |= IFM_HDX;
1466 }
1467 
1468 static void
1469 e6000sw_tick(void *arg, int p __unused)
1470 {
1471 	e6000sw_softc_t *sc;
1472 	struct mii_data *mii;
1473 	struct mii_softc *miisc;
1474 	uint16_t portstatus;
1475 	int port;
1476 
1477 	sc = arg;
1478 
1479 	E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
1480 
1481 	E6000SW_LOCK(sc);
1482 	for (port = 0; port < sc->num_ports; port++) {
1483 		/* Tick only on PHY ports */
1484 		if (!e6000sw_is_portenabled(sc, port) ||
1485 		    !e6000sw_is_phyport(sc, port))
1486 			continue;
1487 
1488 		mii = e6000sw_miiforphy(sc, port);
1489 		if (mii == NULL)
1490 			continue;
1491 
1492 		portstatus = e6000sw_readreg(sc, REG_PORT(sc, port),
1493 		    PORT_STATUS);
1494 
1495 		e6000sw_update_ifmedia(portstatus,
1496 		    &mii->mii_media_status, &mii->mii_media_active);
1497 
1498 		LIST_FOREACH(miisc, &mii->mii_phys, mii_list) {
1499 			if (IFM_INST(mii->mii_media.ifm_cur->ifm_media)
1500 			    != miisc->mii_inst)
1501 				continue;
1502 			mii_phy_update(miisc, MII_POLLSTAT);
1503 		}
1504 	}
1505 	E6000SW_UNLOCK(sc);
1506 }
1507 
1508 static void
1509 e6000sw_setup(device_t dev, e6000sw_softc_t *sc)
1510 {
1511 	uint32_t atu_ctrl;
1512 
1513 	/* Set aging time. */
1514 	atu_ctrl = e6000sw_readreg(sc, REG_GLOBAL, ATU_CONTROL);
1515 	atu_ctrl &= ~ATU_CONTROL_AGETIME_MASK;
1516 	atu_ctrl |= E6000SW_DEFAULT_AGETIME << ATU_CONTROL_AGETIME;
1517 	e6000sw_writereg(sc, REG_GLOBAL, ATU_CONTROL, atu_ctrl);
1518 
1519 	/* Send all with specific mac address to cpu port */
1520 	e6000sw_writereg(sc, REG_GLOBAL2, MGMT_EN_2x, MGMT_EN_ALL);
1521 	e6000sw_writereg(sc, REG_GLOBAL2, MGMT_EN_0x, MGMT_EN_ALL);
1522 
1523 	/* Disable Remote Management */
1524 	e6000sw_writereg(sc, REG_GLOBAL, SWITCH_GLOBAL_CONTROL2, 0);
1525 
1526 	/* Disable loopback filter and flow control messages */
1527 	e6000sw_writereg(sc, REG_GLOBAL2, SWITCH_MGMT,
1528 	    SWITCH_MGMT_PRI_MASK |
1529 	    (1 << SWITCH_MGMT_RSVD2CPU) |
1530 	    SWITCH_MGMT_FC_PRI_MASK |
1531 	    (1 << SWITCH_MGMT_FORCEFLOW));
1532 
1533 	e6000sw_atu_flush(dev, sc, NO_OPERATION);
1534 	e6000sw_atu_mac_table(dev, sc, NULL, NO_OPERATION);
1535 	e6000sw_set_atustat(dev, sc, 0, COUNT_ALL);
1536 }
1537 
1538 static void
1539 e6000sw_set_atustat(device_t dev, e6000sw_softc_t *sc, int bin, int flag)
1540 {
1541 
1542 	e6000sw_readreg(sc, REG_GLOBAL2, ATU_STATS);
1543 	e6000sw_writereg(sc, REG_GLOBAL2, ATU_STATS, (bin << ATU_STATS_BIN ) |
1544 	    (flag << ATU_STATS_FLAG));
1545 }
1546 
1547 static int
1548 e6000sw_atu_mac_table(device_t dev, e6000sw_softc_t *sc, struct atu_opt *atu,
1549     int flag)
1550 {
1551 	uint16_t ret_opt;
1552 	uint16_t ret_data;
1553 
1554 	if (flag == NO_OPERATION)
1555 		return (0);
1556 	else if ((flag & (LOAD_FROM_FIB | PURGE_FROM_FIB | GET_NEXT_IN_FIB |
1557 	    GET_VIOLATION_DATA | CLEAR_VIOLATION_DATA)) == 0) {
1558 		device_printf(dev, "Wrong Opcode for ATU operation\n");
1559 		return (EINVAL);
1560 	}
1561 
1562 	if (E6000SW_WAITREADY(sc, ATU_OPERATION, ATU_UNIT_BUSY)) {
1563 		device_printf(dev, "ATU unit is busy, cannot access\n");
1564 		return (EBUSY);
1565 	}
1566 
1567 	ret_opt = e6000sw_readreg(sc, REG_GLOBAL, ATU_OPERATION);
1568 	if (flag & LOAD_FROM_FIB) {
1569 		ret_data = e6000sw_readreg(sc, REG_GLOBAL, ATU_DATA);
1570 		e6000sw_writereg(sc, REG_GLOBAL2, ATU_DATA, (ret_data &
1571 		    ~ENTRY_STATE));
1572 	}
1573 	e6000sw_writereg(sc, REG_GLOBAL, ATU_MAC_ADDR01, atu->mac_01);
1574 	e6000sw_writereg(sc, REG_GLOBAL, ATU_MAC_ADDR23, atu->mac_23);
1575 	e6000sw_writereg(sc, REG_GLOBAL, ATU_MAC_ADDR45, atu->mac_45);
1576 	e6000sw_writereg(sc, REG_GLOBAL, ATU_FID, atu->fid);
1577 
1578 	e6000sw_writereg(sc, REG_GLOBAL, ATU_OPERATION,
1579 	    (ret_opt | ATU_UNIT_BUSY | flag));
1580 
1581 	if (E6000SW_WAITREADY(sc, ATU_OPERATION, ATU_UNIT_BUSY))
1582 		device_printf(dev, "Timeout while waiting ATU\n");
1583 	else if (flag & GET_NEXT_IN_FIB) {
1584 		atu->mac_01 = e6000sw_readreg(sc, REG_GLOBAL,
1585 		    ATU_MAC_ADDR01);
1586 		atu->mac_23 = e6000sw_readreg(sc, REG_GLOBAL,
1587 		    ATU_MAC_ADDR23);
1588 		atu->mac_45 = e6000sw_readreg(sc, REG_GLOBAL,
1589 		    ATU_MAC_ADDR45);
1590 	}
1591 
1592 	return (0);
1593 }
1594 
1595 static int
1596 e6000sw_atu_flush(device_t dev, e6000sw_softc_t *sc, int flag)
1597 {
1598 	uint32_t reg;
1599 
1600 	if (flag == NO_OPERATION)
1601 		return (0);
1602 
1603 	if (E6000SW_WAITREADY(sc, ATU_OPERATION, ATU_UNIT_BUSY)) {
1604 		device_printf(dev, "ATU unit is busy, cannot access\n");
1605 		return (EBUSY);
1606 	}
1607 	reg = e6000sw_readreg(sc, REG_GLOBAL, ATU_OPERATION);
1608 	e6000sw_writereg(sc, REG_GLOBAL, ATU_OPERATION,
1609 	    (reg | ATU_UNIT_BUSY | flag));
1610 	if (E6000SW_WAITREADY(sc, ATU_OPERATION, ATU_UNIT_BUSY))
1611 		device_printf(dev, "Timeout while flushing ATU\n");
1612 
1613 	return (0);
1614 }
1615 
1616 static int
1617 e6000sw_vtu_flush(e6000sw_softc_t *sc)
1618 {
1619 
1620 	if (E6000SW_WAITREADY(sc, VTU_OPERATION, VTU_BUSY)) {
1621 		device_printf(sc->dev, "VTU unit is busy, cannot access\n");
1622 		return (EBUSY);
1623 	}
1624 
1625 	e6000sw_writereg(sc, REG_GLOBAL, VTU_OPERATION, VTU_FLUSH | VTU_BUSY);
1626 	if (E6000SW_WAITREADY(sc, VTU_OPERATION, VTU_BUSY)) {
1627 		device_printf(sc->dev, "Timeout while flushing VTU\n");
1628 		return (ETIMEDOUT);
1629 	}
1630 
1631 	return (0);
1632 }
1633 
1634 static int
1635 e6000sw_vtu_update(e6000sw_softc_t *sc, int purge, int vid, int fid,
1636     int members, int untagged)
1637 {
1638 	int i, op;
1639 	uint32_t data[2];
1640 
1641 	if (E6000SW_WAITREADY(sc, VTU_OPERATION, VTU_BUSY)) {
1642 		device_printf(sc->dev, "VTU unit is busy, cannot access\n");
1643 		return (EBUSY);
1644 	}
1645 
1646 	*data = (vid & VTU_VID_MASK);
1647 	if (purge == 0)
1648 		*data |= VTU_VID_VALID;
1649 	e6000sw_writereg(sc, REG_GLOBAL, VTU_VID, *data);
1650 
1651 	if (purge == 0) {
1652 		data[0] = 0;
1653 		data[1] = 0;
1654 		for (i = 0; i < sc->num_ports; i++) {
1655 			if ((untagged & (1 << i)) != 0)
1656 				data[i / VTU_PPREG(sc)] |=
1657 				    VTU_PORT_UNTAGGED << VTU_PORT(sc, i);
1658 			else if ((members & (1 << i)) != 0)
1659 				data[i / VTU_PPREG(sc)] |=
1660 				    VTU_PORT_TAGGED << VTU_PORT(sc, i);
1661 			else
1662 				data[i / VTU_PPREG(sc)] |=
1663 				    VTU_PORT_DISCARD << VTU_PORT(sc, i);
1664 		}
1665 		e6000sw_writereg(sc, REG_GLOBAL, VTU_DATA, data[0]);
1666 		e6000sw_writereg(sc, REG_GLOBAL, VTU_DATA2, data[1]);
1667 		e6000sw_writereg(sc, REG_GLOBAL, VTU_FID,
1668 		    fid & VTU_FID_MASK(sc));
1669 		op = VTU_LOAD;
1670 	} else
1671 		op = VTU_PURGE;
1672 
1673 	e6000sw_writereg(sc, REG_GLOBAL, VTU_OPERATION, op | VTU_BUSY);
1674 	if (E6000SW_WAITREADY(sc, VTU_OPERATION, VTU_BUSY)) {
1675 		device_printf(sc->dev, "Timeout while flushing VTU\n");
1676 		return (ETIMEDOUT);
1677 	}
1678 
1679 	return (0);
1680 }
1681