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1 /*-
2  * Copyright (c) 2015 Semihalf
3  * Copyright (c) 2015 Stormshield
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
30
31 #include <sys/param.h>
32 #include <sys/bus.h>
33 #include <sys/errno.h>
34 #include <sys/kernel.h>
35 #include <sys/kthread.h>
36 #include <sys/module.h>
37 #include <sys/socket.h>
38 #include <sys/sockio.h>
39
40 #include <net/if.h>
41 #include <net/if_media.h>
42 #include <net/if_types.h>
43
44 #include <dev/etherswitch/etherswitch.h>
45 #include <dev/mii/mii.h>
46 #include <dev/mii/miivar.h>
47
48 #include <dev/fdt/fdt_common.h>
49 #include <dev/ofw/ofw_bus.h>
50
51 #include "e6000swreg.h"
52 #include "etherswitch_if.h"
53 #include "miibus_if.h"
54 #include "mdio_if.h"
55
56 MALLOC_DECLARE(M_E6000SW);
57 MALLOC_DEFINE(M_E6000SW, "e6000sw", "e6000sw switch");
58
59 #define E6000SW_LOCK(_sc)               sx_xlock(&(_sc)->sx)
60 #define E6000SW_UNLOCK(_sc)             sx_unlock(&(_sc)->sx)
61 #define E6000SW_LOCK_ASSERT(_sc, _what) sx_assert(&(_sc)->sx, (_what))
62 #define E6000SW_TRYLOCK(_sc)            sx_tryxlock(&(_sc)->sx)
63
64 typedef struct e6000sw_softc {
65         device_t                dev;
66         phandle_t               node;
67
68         struct sx               sx;
69         struct ifnet            *ifp[E6000SW_MAX_PORTS];
70         char                    *ifname[E6000SW_MAX_PORTS];
71         device_t                miibus[E6000SW_MAX_PORTS];
72         struct proc             *kproc;
73
74         uint32_t                swid;
75         uint32_t                vlan_mode;
76         uint32_t                cpuports_mask;
77         uint32_t                fixed_mask;
78         uint32_t                fixed25_mask;
79         uint32_t                ports_mask;
80         int                     phy_base;
81         int                     sw_addr;
82         int                     num_ports;
83         boolean_t               multi_chip;
84 } e6000sw_softc_t;
85
86 static etherswitch_info_t etherswitch_info = {
87         .es_nports =            0,
88         .es_nvlangroups =       0,
89         .es_vlan_caps =         ETHERSWITCH_VLAN_PORT,
90         .es_name =              "Marvell 6000 series switch"
91 };
92
93 static void e6000sw_identify(driver_t *, device_t);
94 static int e6000sw_probe(device_t);
95 static int e6000sw_attach(device_t);
96 static int e6000sw_detach(device_t);
97 static int e6000sw_readphy(device_t, int, int);
98 static int e6000sw_writephy(device_t, int, int, int);
99 static etherswitch_info_t* e6000sw_getinfo(device_t);
100 static int e6000sw_getconf(device_t, etherswitch_conf_t *);
101 static void e6000sw_lock(device_t);
102 static void e6000sw_unlock(device_t);
103 static int e6000sw_getport(device_t, etherswitch_port_t *);
104 static int e6000sw_setport(device_t, etherswitch_port_t *);
105 static int e6000sw_readreg_wrapper(device_t, int);
106 static int e6000sw_writereg_wrapper(device_t, int, int);
107 static int e6000sw_readphy_wrapper(device_t, int, int);
108 static int e6000sw_writephy_wrapper(device_t, int, int, int);
109 static int e6000sw_getvgroup_wrapper(device_t, etherswitch_vlangroup_t *);
110 static int e6000sw_setvgroup_wrapper(device_t, etherswitch_vlangroup_t *);
111 static int e6000sw_setvgroup(device_t, etherswitch_vlangroup_t *);
112 static int e6000sw_getvgroup(device_t, etherswitch_vlangroup_t *);
113 static void e6000sw_setup(device_t, e6000sw_softc_t *);
114 static void e6000sw_port_vlan_conf(e6000sw_softc_t *);
115 static void e6000sw_tick(void *);
116 static void e6000sw_set_atustat(device_t, e6000sw_softc_t *, int, int);
117 static int e6000sw_atu_flush(device_t, e6000sw_softc_t *, int);
118 static __inline void e6000sw_writereg(e6000sw_softc_t *, int, int, int);
119 static __inline uint32_t e6000sw_readreg(e6000sw_softc_t *, int, int);
120 static int e6000sw_ifmedia_upd(struct ifnet *);
121 static void e6000sw_ifmedia_sts(struct ifnet *, struct ifmediareq *);
122 static int e6000sw_atu_mac_table(device_t, e6000sw_softc_t *, struct atu_opt *,
123     int);
124 static int e6000sw_get_pvid(e6000sw_softc_t *, int, int *);
125 static int e6000sw_set_pvid(e6000sw_softc_t *, int, int);
126 static __inline bool e6000sw_is_cpuport(e6000sw_softc_t *, int);
127 static __inline bool e6000sw_is_fixedport(e6000sw_softc_t *, int);
128 static __inline bool e6000sw_is_fixed25port(e6000sw_softc_t *, int);
129 static __inline bool e6000sw_is_phyport(e6000sw_softc_t *, int);
130 static __inline bool e6000sw_is_portenabled(e6000sw_softc_t *, int);
131 static __inline struct mii_data *e6000sw_miiforphy(e6000sw_softc_t *,
132     unsigned int);
133
134 static device_method_t e6000sw_methods[] = {
135         /* device interface */
136         DEVMETHOD(device_identify,              e6000sw_identify),
137         DEVMETHOD(device_probe,                 e6000sw_probe),
138         DEVMETHOD(device_attach,                e6000sw_attach),
139         DEVMETHOD(device_detach,                e6000sw_detach),
140
141         /* bus interface */
142         DEVMETHOD(bus_add_child,                device_add_child_ordered),
143
144         /* mii interface */
145         DEVMETHOD(miibus_readreg,               e6000sw_readphy),
146         DEVMETHOD(miibus_writereg,              e6000sw_writephy),
147
148         /* etherswitch interface */
149         DEVMETHOD(etherswitch_getinfo,          e6000sw_getinfo),
150         DEVMETHOD(etherswitch_getconf,          e6000sw_getconf),
151         DEVMETHOD(etherswitch_lock,             e6000sw_lock),
152         DEVMETHOD(etherswitch_unlock,           e6000sw_unlock),
153         DEVMETHOD(etherswitch_getport,          e6000sw_getport),
154         DEVMETHOD(etherswitch_setport,          e6000sw_setport),
155         DEVMETHOD(etherswitch_readreg,          e6000sw_readreg_wrapper),
156         DEVMETHOD(etherswitch_writereg,         e6000sw_writereg_wrapper),
157         DEVMETHOD(etherswitch_readphyreg,       e6000sw_readphy_wrapper),
158         DEVMETHOD(etherswitch_writephyreg,      e6000sw_writephy_wrapper),
159         DEVMETHOD(etherswitch_setvgroup,        e6000sw_setvgroup_wrapper),
160         DEVMETHOD(etherswitch_getvgroup,        e6000sw_getvgroup_wrapper),
161
162         DEVMETHOD_END
163 };
164
165 static devclass_t e6000sw_devclass;
166
167 DEFINE_CLASS_0(e6000sw, e6000sw_driver, e6000sw_methods,
168     sizeof(e6000sw_softc_t));
169
170 DRIVER_MODULE(e6000sw, mdio, e6000sw_driver, e6000sw_devclass, 0, 0);
171 DRIVER_MODULE(etherswitch, e6000sw, etherswitch_driver, etherswitch_devclass, 0,
172     0);
173 DRIVER_MODULE(miibus, e6000sw, miibus_driver, miibus_devclass, 0, 0);
174 MODULE_DEPEND(e6000sw, mdio, 1, 1, 1);
175
176 #define SMI_CMD                 0
177 #define SMI_CMD_BUSY            (1 << 15)
178 #define SMI_CMD_OP_READ         ((2 << 10) | SMI_CMD_BUSY | (1 << 12))
179 #define SMI_CMD_OP_WRITE        ((1 << 10) | SMI_CMD_BUSY | (1 << 12))
180 #define SMI_DATA                1
181
182 #define MDIO_READ(dev, addr, reg)                                       \
183         MDIO_READREG(device_get_parent(dev), (addr), (reg))
184 #define MDIO_WRITE(dev, addr, reg, val)                                 \
185         MDIO_WRITEREG(device_get_parent(dev), (addr), (reg), (val))
186
187 static void
188 e6000sw_identify(driver_t *driver, device_t parent)
189 {
190
191         if (device_find_child(parent, "e6000sw", -1) == NULL)
192                 BUS_ADD_CHILD(parent, 0, "e6000sw", -1);
193 }
194
195 static int
196 e6000sw_probe(device_t dev)
197 {
198         e6000sw_softc_t *sc;
199         const char *description;
200         phandle_t dsa_node, switch_node;
201
202         dsa_node = fdt_find_compatible(OF_finddevice("/"),
203             "marvell,dsa", 0);
204         switch_node = OF_child(dsa_node);
205
206         if (switch_node == 0)
207                 return (ENXIO);
208
209         sc = device_get_softc(dev);
210         sc->dev = dev;
211         sc->node = switch_node;
212
213         if (OF_getencprop(sc->node, "reg", &sc->sw_addr,
214             sizeof(sc->sw_addr)) < 0)
215                 return (ENXIO);
216         if (sc->sw_addr != 0 && (sc->sw_addr % 2) == 0)
217                 sc->multi_chip = true;
218
219         /*
220          * Create temporary lock, just to satisfy assertions,
221          * when obtaining the switch ID. Destroy immediately afterwards.
222          */
223         sx_init(&sc->sx, "e6000sw_tmp");
224         E6000SW_LOCK(sc);
225         sc->swid = e6000sw_readreg(sc, REG_PORT(0), SWITCH_ID) & 0xfff0;
226         E6000SW_UNLOCK(sc);
227         sx_destroy(&sc->sx);
228
229         switch (sc->swid) {
230         case MV88E6141:
231                 description = "Marvell 88E6141";
232                 sc->phy_base = 0x10;
233                 sc->num_ports = 6;
234                 break;
235         case MV88E6341:
236                 description = "Marvell 88E6341";
237                 sc->phy_base = 0x10;
238                 sc->num_ports = 6;
239                 break;
240         case MV88E6352:
241                 description = "Marvell 88E6352";
242                 sc->num_ports = 7;
243                 break;
244         case MV88E6172:
245                 description = "Marvell 88E6172";
246                 sc->num_ports = 7;
247                 break;
248         case MV88E6176:
249                 description = "Marvell 88E6176";
250                 sc->num_ports = 7;
251                 break;
252         default:
253                 device_printf(dev, "Unrecognized device, id 0x%x.\n", sc->swid);
254                 return (ENXIO);
255         }
256
257         device_set_desc(dev, description);
258
259         return (BUS_PROBE_DEFAULT);
260 }
261
262 static int
263 e6000sw_parse_child_fdt(e6000sw_softc_t *sc, phandle_t child, int *pport)
264 {
265         char *name, *portlabel;
266         int speed;
267         phandle_t fixed_link;
268         uint32_t port;
269
270         if (pport == NULL)
271                 return (ENXIO);
272
273         if (OF_getencprop(child, "reg", (void *)&port, sizeof(port)) < 0)
274                 return (ENXIO);
275         if (port >= sc->num_ports)
276                 return (ENXIO);
277         *pport = port;
278
279         if (OF_getprop_alloc(child, "label", 1, (void **)&portlabel) > 0) {
280                 if (strncmp(portlabel, "cpu", 3) == 0) {
281                         device_printf(sc->dev, "CPU port at %d\n", port);
282                         sc->cpuports_mask |= (1 << port);
283                         sc->fixed_mask |= (1 << port);
284                 }
285                 free(portlabel, M_OFWPROP);
286         }
287
288         fixed_link = OF_child(child);
289         if (fixed_link != 0 &&
290             OF_getprop_alloc(fixed_link, "name", 1, (void **)&name) > 0) {
291                 if (strncmp(name, "fixed-link", 10) == 0) {
292                         /* Assume defaults: 1g - full-duplex. */
293                         sc->fixed_mask |= (1 << port);
294                         if (OF_getencprop(fixed_link, "speed", &speed,
295                              sizeof(speed)) > 0) {
296                                 if (speed == 2500 &&
297                                     (MVSWITCH(sc, MV88E6141) ||
298                                      MVSWITCH(sc, MV88E6341))) {
299                                         sc->fixed25_mask |= (1 << port);
300                                 }
301                         }
302                 }
303                 free(name, M_OFWPROP);
304         }
305         if ((sc->fixed_mask & (1 << port)) != 0)
306                 device_printf(sc->dev, "fixed port at %d\n", port);
307         else
308                 device_printf(sc->dev, "PHY at port %d\n", port);
309
310         return (0);
311 }
312
313 static int
314 e6000sw_init_interface(e6000sw_softc_t *sc, int port)
315 {
316         char name[IFNAMSIZ];
317
318         snprintf(name, IFNAMSIZ, "%sport", device_get_nameunit(sc->dev));
319
320         sc->ifp[port] = if_alloc(IFT_ETHER);
321         if (sc->ifp[port] == NULL)
322                 return (ENOMEM);
323         sc->ifp[port]->if_softc = sc;
324         sc->ifp[port]->if_flags |= IFF_UP | IFF_BROADCAST |
325             IFF_DRV_RUNNING | IFF_SIMPLEX;
326         sc->ifname[port] = malloc(strlen(name) + 1, M_E6000SW, M_NOWAIT);
327         if (sc->ifname[port] == NULL) {
328                 if_free(sc->ifp[port]);
329                 return (ENOMEM);
330         }
331         memcpy(sc->ifname[port], name, strlen(name) + 1);
332         if_initname(sc->ifp[port], sc->ifname[port], port);
333
334         return (0);
335 }
336
337 static int
338 e6000sw_attach_miibus(e6000sw_softc_t *sc, int port)
339 {
340         int err;
341
342         err = mii_attach(sc->dev, &sc->miibus[port], sc->ifp[port],
343             e6000sw_ifmedia_upd, e6000sw_ifmedia_sts, BMSR_DEFCAPMASK,
344             port + sc->phy_base, MII_OFFSET_ANY, 0);
345         if (err != 0)
346                 return (err);
347
348         return (0);
349 }
350
351 static int
352 e6000sw_attach(device_t dev)
353 {
354         e6000sw_softc_t *sc;
355         phandle_t child;
356         int err, port;
357         uint32_t reg;
358
359         err = 0;
360         sc = device_get_softc(dev);
361
362         if (sc->multi_chip)
363                 device_printf(dev, "multi-chip addressing mode\n");
364         else
365                 device_printf(dev, "single-chip addressing mode\n");
366
367         sx_init(&sc->sx, "e6000sw");
368
369         E6000SW_LOCK(sc);
370         e6000sw_setup(dev, sc);
371
372         for (child = OF_child(sc->node); child != 0; child = OF_peer(child)) {
373                 err = e6000sw_parse_child_fdt(sc, child, &port);
374                 if (err != 0) {
375                         device_printf(sc->dev, "failed to parse DTS\n");
376                         goto out_fail;
377                 }
378
379                 /* Port is in use. */
380                 sc->ports_mask |= (1 << port);
381
382                 err = e6000sw_init_interface(sc, port);
383                 if (err != 0) {
384                         device_printf(sc->dev, "failed to init interface\n");
385                         goto out_fail;
386                 }
387
388                 if (e6000sw_is_fixedport(sc, port)) {
389                         /* Link must be down to change speed force value. */
390                         reg = e6000sw_readreg(sc, REG_PORT(port), PSC_CONTROL);
391                         reg &= ~PSC_CONTROL_LINK_UP;
392                         reg |= PSC_CONTROL_FORCED_LINK;
393                         e6000sw_writereg(sc, REG_PORT(port), PSC_CONTROL, reg);
394
395                         /*
396                          * Force speed, full-duplex, EEE off and flow-control
397                          * on.
398                          */
399                         if (e6000sw_is_fixed25port(sc, port))
400                                 reg = PSC_CONTROL_SPD2500;
401                         else
402                                 reg = PSC_CONTROL_SPD1000;
403                         reg |= PSC_CONTROL_FORCED_DPX | PSC_CONTROL_FULLDPX |
404                             PSC_CONTROL_FORCED_LINK | PSC_CONTROL_LINK_UP |
405                             PSC_CONTROL_FORCED_FC | PSC_CONTROL_FC_ON |
406                             PSC_CONTROL_FORCED_SPD;
407                         if (MVSWITCH(sc, MV88E6141) || MVSWITCH(sc, MV88E6341))
408                             reg |= PSC_CONTROL_FORCED_EEE;
409                         e6000sw_writereg(sc, REG_PORT(port), PSC_CONTROL, reg);
410                 }
411
412                 /* Don't attach miibus at CPU/fixed ports */
413                 if (!e6000sw_is_phyport(sc, port))
414                         continue;
415
416                 err = e6000sw_attach_miibus(sc, port);
417                 if (err != 0) {
418                         device_printf(sc->dev, "failed to attach miibus\n");
419                         goto out_fail;
420                 }
421         }
422
423         etherswitch_info.es_nports = sc->num_ports;
424
425         /* Default to port vlan. */
426         e6000sw_port_vlan_conf(sc);
427         E6000SW_UNLOCK(sc);
428
429         bus_generic_probe(dev);
430         bus_generic_attach(dev);
431
432         kproc_create(e6000sw_tick, sc, &sc->kproc, 0, 0, "e6000sw tick kproc");
433
434         return (0);
435
436 out_fail:
437         E6000SW_UNLOCK(sc);
438         e6000sw_detach(dev);
439
440         return (err);
441 }
442
443 static __inline int
444 e6000sw_poll_done(e6000sw_softc_t *sc)
445 {
446         int i;
447
448         for (i = 0; i < E6000SW_SMI_TIMEOUT; i++) {
449
450                 if ((e6000sw_readreg(sc, REG_GLOBAL2, SMI_PHY_CMD_REG) &
451                     (1 << PHY_CMD_SMI_BUSY)) == 0)
452                         return (0);
453
454                 pause("e6000sw PHY poll", hz/1000);
455         }
456
457         return (ETIMEDOUT);
458 }
459
460 /*
461  * PHY registers are paged. Put page index in reg 22 (accessible from every
462  * page), then access specific register.
463  */
464 static int
465 e6000sw_readphy(device_t dev, int phy, int reg)
466 {
467         e6000sw_softc_t *sc;
468         uint32_t val;
469         int err;
470
471         sc = device_get_softc(dev);
472         if (!e6000sw_is_phyport(sc, phy) || reg >= E6000SW_NUM_PHY_REGS) {
473                 device_printf(dev, "Wrong register address.\n");
474                 return (EINVAL);
475         }
476
477         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
478
479         err = e6000sw_poll_done(sc);
480         if (err != 0) {
481                 device_printf(dev, "Timeout while waiting for switch\n");
482                 return (err);
483         }
484
485         val = 1 << PHY_CMD_SMI_BUSY;
486         val |= PHY_CMD_MODE_MDIO << PHY_CMD_MODE;
487         val |= PHY_CMD_OPCODE_READ << PHY_CMD_OPCODE;
488         val |= (reg << PHY_CMD_REG_ADDR) & PHY_CMD_REG_ADDR_MASK;
489         val |= (phy << PHY_CMD_DEV_ADDR) & PHY_CMD_DEV_ADDR_MASK;
490         e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_CMD_REG, val);
491
492         err = e6000sw_poll_done(sc);
493         if (err != 0) {
494                 device_printf(dev, "Timeout while waiting for switch\n");
495                 return (err);
496         }
497
498         val = e6000sw_readreg(sc, REG_GLOBAL2, SMI_PHY_DATA_REG);
499
500         return (val & PHY_DATA_MASK);
501 }
502
503 static int
504 e6000sw_writephy(device_t dev, int phy, int reg, int data)
505 {
506         e6000sw_softc_t *sc;
507         uint32_t val;
508         int err;
509
510         sc = device_get_softc(dev);
511         if (!e6000sw_is_phyport(sc, phy) || reg >= E6000SW_NUM_PHY_REGS) {
512                 device_printf(dev, "Wrong register address.\n");
513                 return (EINVAL);
514         }
515
516         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
517
518         err = e6000sw_poll_done(sc);
519         if (err != 0) {
520                 device_printf(dev, "Timeout while waiting for switch\n");
521                 return (err);
522         }
523
524         val = 1 << PHY_CMD_SMI_BUSY;
525         val |= PHY_CMD_MODE_MDIO << PHY_CMD_MODE;
526         val |= PHY_CMD_OPCODE_WRITE << PHY_CMD_OPCODE;
527         val |= (reg << PHY_CMD_REG_ADDR) & PHY_CMD_REG_ADDR_MASK;
528         val |= (phy << PHY_CMD_DEV_ADDR) & PHY_CMD_DEV_ADDR_MASK;
529         e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_DATA_REG,
530             data & PHY_DATA_MASK);
531         e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_CMD_REG, val);
532
533         err = e6000sw_poll_done(sc);
534         if (err != 0)
535                 device_printf(dev, "Timeout while waiting for switch\n");
536
537         return (err);
538 }
539
540 static int
541 e6000sw_detach(device_t dev)
542 {
543         int phy;
544         e6000sw_softc_t *sc;
545
546         sc = device_get_softc(dev);
547         bus_generic_detach(dev);
548         sx_destroy(&sc->sx);
549         for (phy = 0; phy < sc->num_ports; phy++) {
550                 if (sc->miibus[phy] != NULL)
551                         device_delete_child(dev, sc->miibus[phy]);
552                 if (sc->ifp[phy] != NULL)
553                         if_free(sc->ifp[phy]);
554                 if (sc->ifname[phy] != NULL)
555                         free(sc->ifname[phy], M_E6000SW);
556         }
557
558         return (0);
559 }
560
561 static etherswitch_info_t*
562 e6000sw_getinfo(device_t dev)
563 {
564
565         return (&etherswitch_info);
566 }
567
568 static int
569 e6000sw_getconf(device_t dev, etherswitch_conf_t *conf)
570 {
571         struct e6000sw_softc *sc;
572
573         /* Return the VLAN mode. */
574         sc = device_get_softc(dev);
575         conf->cmd = ETHERSWITCH_CONF_VLAN_MODE;
576         conf->vlan_mode = sc->vlan_mode;
577
578         return (0);
579 }
580
581 static void
582 e6000sw_lock(device_t dev)
583 {
584         struct e6000sw_softc *sc;
585
586         sc = device_get_softc(dev);
587
588         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
589         E6000SW_LOCK(sc);
590 }
591
592 static void
593 e6000sw_unlock(device_t dev)
594 {
595         struct e6000sw_softc *sc;
596
597         sc = device_get_softc(dev);
598
599         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
600         E6000SW_UNLOCK(sc);
601 }
602
603 static int
604 e6000sw_getport(device_t dev, etherswitch_port_t *p)
605 {
606         struct mii_data *mii;
607         int err;
608         struct ifmediareq *ifmr;
609
610         e6000sw_softc_t *sc = device_get_softc(dev);
611         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
612
613         if (p->es_port >= sc->num_ports || p->es_port < 0)
614                 return (EINVAL);
615         if (!e6000sw_is_portenabled(sc, p->es_port))
616                 return (0);
617
618         err = 0;
619         E6000SW_LOCK(sc);
620         e6000sw_get_pvid(sc, p->es_port, &p->es_pvid);
621
622         if (e6000sw_is_fixedport(sc, p->es_port)) {
623                 if (e6000sw_is_cpuport(sc, p->es_port))
624                         p->es_flags |= ETHERSWITCH_PORT_CPU;
625                 ifmr = &p->es_ifmr;
626                 ifmr->ifm_status = IFM_ACTIVE | IFM_AVALID;
627                 ifmr->ifm_count = 0;
628                 if (e6000sw_is_fixed25port(sc, p->es_port))
629                         ifmr->ifm_active = IFM_2500_T;
630                 else
631                         ifmr->ifm_active = IFM_1000_T;
632                 ifmr->ifm_active |= IFM_ETHER | IFM_FDX;
633                 ifmr->ifm_current = ifmr->ifm_active;
634                 ifmr->ifm_mask = 0;
635         } else {
636                 mii = e6000sw_miiforphy(sc, p->es_port);
637                 err = ifmedia_ioctl(mii->mii_ifp, &p->es_ifr,
638                     &mii->mii_media, SIOCGIFMEDIA);
639         }
640         E6000SW_UNLOCK(sc);
641
642         return (err);
643 }
644
645 static int
646 e6000sw_setport(device_t dev, etherswitch_port_t *p)
647 {
648         e6000sw_softc_t *sc;
649         int err;
650         struct mii_data *mii;
651
652         sc = device_get_softc(dev);
653         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
654
655         if (p->es_port >= sc->num_ports || p->es_port < 0)
656                 return (EINVAL);
657         if (!e6000sw_is_portenabled(sc, p->es_port))
658                 return (0);
659
660         err = 0;
661         E6000SW_LOCK(sc);
662         if (p->es_pvid != 0)
663                 e6000sw_set_pvid(sc, p->es_port, p->es_pvid);
664         if (e6000sw_is_phyport(sc, p->es_port)) {
665                 mii = e6000sw_miiforphy(sc, p->es_port);
666                 err = ifmedia_ioctl(mii->mii_ifp, &p->es_ifr, &mii->mii_media,
667                     SIOCSIFMEDIA);
668         }
669         E6000SW_UNLOCK(sc);
670
671         return (err);
672 }
673
674 /*
675  * Registers in this switch are divided into sections, specified in
676  * documentation. So as to access any of them, section index and reg index
677  * is necessary. etherswitchcfg uses only one variable, so indexes were
678  * compressed into addr_reg: 32 * section_index + reg_index.
679  */
680 static int
681 e6000sw_readreg_wrapper(device_t dev, int addr_reg)
682 {
683
684         if ((addr_reg > (REG_GLOBAL2 * 32 + REG_NUM_MAX)) ||
685             (addr_reg < (REG_PORT(0) * 32))) {
686                 device_printf(dev, "Wrong register address.\n");
687                 return (EINVAL);
688         }
689
690         return (e6000sw_readreg(device_get_softc(dev), addr_reg / 32,
691             addr_reg % 32));
692 }
693
694 static int
695 e6000sw_writereg_wrapper(device_t dev, int addr_reg, int val)
696 {
697
698         if ((addr_reg > (REG_GLOBAL2 * 32 + REG_NUM_MAX)) ||
699             (addr_reg < (REG_PORT(0) * 32))) {
700                 device_printf(dev, "Wrong register address.\n");
701                 return (EINVAL);
702         }
703         e6000sw_writereg(device_get_softc(dev), addr_reg / 5,
704             addr_reg % 32, val);
705
706         return (0);
707 }
708
709 /*
710  * These wrappers are necessary because PHY accesses from etherswitchcfg
711  * need to be synchronized with locks, while miibus PHY accesses do not.
712  */
713 static int
714 e6000sw_readphy_wrapper(device_t dev, int phy, int reg)
715 {
716         e6000sw_softc_t *sc;
717         int ret;
718
719         sc = device_get_softc(dev);
720         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
721
722         E6000SW_LOCK(sc);
723         ret = e6000sw_readphy(dev, phy, reg);
724         E6000SW_UNLOCK(sc);
725
726         return (ret);
727 }
728
729 static int
730 e6000sw_writephy_wrapper(device_t dev, int phy, int reg, int data)
731 {
732         e6000sw_softc_t *sc;
733         int ret;
734
735         sc = device_get_softc(dev);
736         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
737
738         E6000SW_LOCK(sc);
739         ret = e6000sw_writephy(dev, phy, reg, data);
740         E6000SW_UNLOCK(sc);
741
742         return (ret);
743 }
744
745 /*
746  * setvgroup/getvgroup called from etherswitchfcg need to be locked,
747  * while internal calls do not.
748  */
749 static int
750 e6000sw_setvgroup_wrapper(device_t dev, etherswitch_vlangroup_t *vg)
751 {
752         e6000sw_softc_t *sc;
753         int ret;
754
755         sc = device_get_softc(dev);
756         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
757
758         E6000SW_LOCK(sc);
759         ret = e6000sw_setvgroup(dev, vg);
760         E6000SW_UNLOCK(sc);
761
762         return (ret);
763 }
764
765 static int
766 e6000sw_getvgroup_wrapper(device_t dev, etherswitch_vlangroup_t *vg)
767 {
768         e6000sw_softc_t *sc;
769         int ret;
770
771         sc = device_get_softc(dev);
772         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
773
774         E6000SW_LOCK(sc);
775         ret = e6000sw_getvgroup(dev, vg);
776         E6000SW_UNLOCK(sc);
777
778         return (ret);
779 }
780
781 static __inline void
782 e6000sw_port_vlan_assign(e6000sw_softc_t *sc, int port, uint32_t fid,
783     uint32_t members)
784 {
785         uint32_t reg;
786
787         reg = e6000sw_readreg(sc, REG_PORT(port), PORT_VLAN_MAP);
788         reg &= ~PORT_VLAN_MAP_TABLE_MASK;
789         reg &= ~PORT_VLAN_MAP_FID_MASK;
790         reg |= members & PORT_VLAN_MAP_TABLE_MASK & ~(1 << port);
791         reg |= (fid << PORT_VLAN_MAP_FID) & PORT_VLAN_MAP_FID_MASK;
792         e6000sw_writereg(sc, REG_PORT(port), PORT_VLAN_MAP, reg);
793         reg = e6000sw_readreg(sc, REG_PORT(port), PORT_CONTROL_1);
794         reg &= ~PORT_CONTROL_1_FID_MASK;
795         reg |= (fid >> 4) & PORT_CONTROL_1_FID_MASK;
796         e6000sw_writereg(sc, REG_PORT(port), PORT_CONTROL_1, reg);
797 }
798
799 static int
800 e6000sw_set_port_vlan(e6000sw_softc_t *sc, etherswitch_vlangroup_t *vg)
801 {
802         uint32_t port;
803
804         port = vg->es_vlangroup;
805         if (port > sc->num_ports)
806                 return (EINVAL);
807
808         if (vg->es_member_ports != vg->es_untagged_ports) {
809                 device_printf(sc->dev, "Tagged ports not supported.\n");
810                 return (EINVAL);
811         }
812
813         e6000sw_port_vlan_assign(sc, port, port + 1, vg->es_untagged_ports);
814         vg->es_vid = port | ETHERSWITCH_VID_VALID;
815
816         return (0);
817 }
818
819 static int
820 e6000sw_setvgroup(device_t dev, etherswitch_vlangroup_t *vg)
821 {
822         e6000sw_softc_t *sc;
823
824         sc = device_get_softc(dev);
825         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
826
827         if (sc->vlan_mode == ETHERSWITCH_VLAN_PORT)
828                 return (e6000sw_set_port_vlan(sc, vg));
829
830         return (EINVAL);
831 }
832
833 static int
834 e6000sw_get_port_vlan(e6000sw_softc_t *sc, etherswitch_vlangroup_t *vg)
835 {
836         uint32_t port, reg;
837
838         port = vg->es_vlangroup;
839         if (port > sc->num_ports)
840                 return (EINVAL);
841
842         if (!e6000sw_is_portenabled(sc, port)) {
843                 vg->es_vid = port;
844                 return (0);
845         }
846
847         reg = e6000sw_readreg(sc, REG_PORT(port), PORT_VLAN_MAP);
848         vg->es_untagged_ports = vg->es_member_ports =
849             reg & PORT_VLAN_MAP_TABLE_MASK;
850         vg->es_vid = port | ETHERSWITCH_VID_VALID;
851         vg->es_fid = (reg & PORT_VLAN_MAP_FID_MASK) >> PORT_VLAN_MAP_FID;
852         reg = e6000sw_readreg(sc, REG_PORT(port), PORT_CONTROL_1);
853         vg->es_fid |= (reg & PORT_CONTROL_1_FID_MASK) << 4;
854
855         return (0);
856 }
857
858 static int
859 e6000sw_getvgroup(device_t dev, etherswitch_vlangroup_t *vg)
860 {
861         e6000sw_softc_t *sc;
862
863         sc = device_get_softc(dev);
864         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
865
866         if (sc->vlan_mode == ETHERSWITCH_VLAN_PORT)
867                 return (e6000sw_get_port_vlan(sc, vg));
868
869         return (EINVAL);
870 }
871
872 static __inline struct mii_data*
873 e6000sw_miiforphy(e6000sw_softc_t *sc, unsigned int phy)
874 {
875
876         if (!e6000sw_is_phyport(sc, phy))
877                 return (NULL);
878
879         return (device_get_softc(sc->miibus[phy]));
880 }
881
882 static int
883 e6000sw_ifmedia_upd(struct ifnet *ifp)
884 {
885         e6000sw_softc_t *sc;
886         struct mii_data *mii;
887
888         sc = ifp->if_softc;
889         mii = e6000sw_miiforphy(sc, ifp->if_dunit);
890         if (mii == NULL)
891                 return (ENXIO);
892         mii_mediachg(mii);
893
894         return (0);
895 }
896
897 static void
898 e6000sw_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
899 {
900         e6000sw_softc_t *sc;
901         struct mii_data *mii;
902
903         sc = ifp->if_softc;
904         mii = e6000sw_miiforphy(sc, ifp->if_dunit);
905
906         if (mii == NULL)
907                 return;
908
909         mii_pollstat(mii);
910         ifmr->ifm_active = mii->mii_media_active;
911         ifmr->ifm_status = mii->mii_media_status;
912 }
913
914 static int
915 e6000sw_smi_waitready(e6000sw_softc_t *sc, int phy)
916 {
917         int i;
918
919         for (i = 0; i < E6000SW_SMI_TIMEOUT; i++) {
920                 if ((MDIO_READ(sc->dev, phy, SMI_CMD) & SMI_CMD_BUSY) == 0)
921                         return (0);
922                 DELAY(1);
923         }
924
925         return (1);
926 }
927
928 static __inline uint32_t
929 e6000sw_readreg(e6000sw_softc_t *sc, int addr, int reg)
930 {
931
932         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
933
934         if (!sc->multi_chip)
935                 return (MDIO_READ(sc->dev, addr, reg) & 0xffff);
936
937         if (e6000sw_smi_waitready(sc, sc->sw_addr)) {
938                 printf("e6000sw: readreg timeout\n");
939                 return (0xffff);
940         }
941         MDIO_WRITE(sc->dev, sc->sw_addr, SMI_CMD,
942             SMI_CMD_OP_READ | (addr << 5) | reg);
943         if (e6000sw_smi_waitready(sc, sc->sw_addr)) {
944                 printf("e6000sw: readreg timeout\n");
945                 return (0xffff);
946         }
947
948         return (MDIO_READ(sc->dev, sc->sw_addr, SMI_DATA) & 0xffff);
949 }
950
951 static __inline void
952 e6000sw_writereg(e6000sw_softc_t *sc, int addr, int reg, int val)
953 {
954
955         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
956
957         if (!sc->multi_chip) {
958                 MDIO_WRITE(sc->dev, addr, reg, val);
959                 return;
960         }
961
962         if (e6000sw_smi_waitready(sc, sc->sw_addr)) {
963                 printf("e6000sw: readreg timeout\n");
964                 return;
965         }
966         MDIO_WRITE(sc->dev, sc->sw_addr, SMI_DATA, val);
967         MDIO_WRITE(sc->dev, sc->sw_addr, SMI_CMD,
968             SMI_CMD_OP_WRITE | (addr << 5) | reg);
969         if (e6000sw_smi_waitready(sc, sc->sw_addr)) {
970                 printf("e6000sw: readreg timeout\n");
971                 return;
972         }
973 }
974
975 static __inline bool
976 e6000sw_is_cpuport(e6000sw_softc_t *sc, int port)
977 {
978
979         return ((sc->cpuports_mask & (1 << port)) ? true : false);
980 }
981
982 static __inline bool
983 e6000sw_is_fixedport(e6000sw_softc_t *sc, int port)
984 {
985
986         return ((sc->fixed_mask & (1 << port)) ? true : false);
987 }
988
989 static __inline bool
990 e6000sw_is_fixed25port(e6000sw_softc_t *sc, int port)
991 {
992
993         return ((sc->fixed25_mask & (1 << port)) ? true : false);
994 }
995
996 static __inline bool
997 e6000sw_is_phyport(e6000sw_softc_t *sc, int port)
998 {
999         uint32_t phy_mask;
1000         phy_mask = ~(sc->fixed_mask | sc->cpuports_mask);
1001
1002         return ((phy_mask & (1 << port)) ? true : false);
1003 }
1004
1005 static __inline bool
1006 e6000sw_is_portenabled(e6000sw_softc_t *sc, int port)
1007 {
1008
1009         return ((sc->ports_mask & (1 << port)) ? true : false);
1010 }
1011
1012 static __inline int
1013 e6000sw_set_pvid(e6000sw_softc_t *sc, int port, int pvid)
1014 {
1015
1016         e6000sw_writereg(sc, REG_PORT(port), PORT_VID, pvid &
1017             PORT_VID_DEF_VID_MASK);
1018
1019         return (0);
1020 }
1021
1022 static __inline int
1023 e6000sw_get_pvid(e6000sw_softc_t *sc, int port, int *pvid)
1024 {
1025
1026         if (pvid == NULL)
1027                 return (ENXIO);
1028
1029         *pvid = e6000sw_readreg(sc, REG_PORT(port), PORT_VID) &
1030             PORT_VID_DEF_VID_MASK;
1031
1032         return (0);
1033 }
1034
1035 /*
1036  * Convert port status to ifmedia.
1037  */
1038 static void
1039 e6000sw_update_ifmedia(uint16_t portstatus, u_int *media_status, u_int *media_active)
1040 {
1041         *media_active = IFM_ETHER;
1042         *media_status = IFM_AVALID;
1043
1044         if ((portstatus & PORT_STATUS_LINK_MASK) != 0)
1045                 *media_status |= IFM_ACTIVE;
1046         else {
1047                 *media_active |= IFM_NONE;
1048                 return;
1049         }
1050
1051         switch (portstatus & PORT_STATUS_SPEED_MASK) {
1052         case PORT_STATUS_SPEED_10:
1053                 *media_active |= IFM_10_T;
1054                 break;
1055         case PORT_STATUS_SPEED_100:
1056                 *media_active |= IFM_100_TX;
1057                 break;
1058         case PORT_STATUS_SPEED_1000:
1059                 *media_active |= IFM_1000_T;
1060                 break;
1061         }
1062
1063         if ((portstatus & PORT_STATUS_DUPLEX_MASK) == 0)
1064                 *media_active |= IFM_FDX;
1065         else
1066                 *media_active |= IFM_HDX;
1067 }
1068
1069 static void
1070 e6000sw_tick (void *arg)
1071 {
1072         e6000sw_softc_t *sc;
1073         struct mii_data *mii;
1074         struct mii_softc *miisc;
1075         uint16_t portstatus;
1076         int port;
1077
1078         sc = arg;
1079
1080         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
1081
1082         for (;;) {
1083                 E6000SW_LOCK(sc);
1084                 for (port = 0; port < sc->num_ports; port++) {
1085                         /* Tick only on PHY ports */
1086                         if (!e6000sw_is_portenabled(sc, port) ||
1087                             !e6000sw_is_phyport(sc, port))
1088                                 continue;
1089
1090                         mii = e6000sw_miiforphy(sc, port);
1091                         if (mii == NULL)
1092                                 continue;
1093
1094                         portstatus = e6000sw_readreg(sc, REG_PORT(port),
1095                             PORT_STATUS);
1096
1097                         e6000sw_update_ifmedia(portstatus,
1098                             &mii->mii_media_status, &mii->mii_media_active);
1099
1100                         LIST_FOREACH(miisc, &mii->mii_phys, mii_list) {
1101                                 if (IFM_INST(mii->mii_media.ifm_cur->ifm_media)
1102                                     != miisc->mii_inst)
1103                                         continue;
1104                                 mii_phy_update(miisc, MII_POLLSTAT);
1105                         }
1106                 }
1107                 E6000SW_UNLOCK(sc);
1108                 pause("e6000sw tick", 1000);
1109         }
1110 }
1111
1112 static void
1113 e6000sw_setup(device_t dev, e6000sw_softc_t *sc)
1114 {
1115         uint16_t atu_ctrl, atu_age;
1116
1117         /* Set aging time */
1118         e6000sw_writereg(sc, REG_GLOBAL, ATU_CONTROL,
1119             (E6000SW_DEFAULT_AGETIME << ATU_CONTROL_AGETIME) |
1120             (1 << ATU_CONTROL_LEARN2ALL));
1121
1122         /* Send all with specific mac address to cpu port */
1123         e6000sw_writereg(sc, REG_GLOBAL2, MGMT_EN_2x, MGMT_EN_ALL);
1124         e6000sw_writereg(sc, REG_GLOBAL2, MGMT_EN_0x, MGMT_EN_ALL);
1125
1126         /* Disable Remote Management */
1127         e6000sw_writereg(sc, REG_GLOBAL, SWITCH_GLOBAL_CONTROL2, 0);
1128
1129         /* Disable loopback filter and flow control messages */
1130         e6000sw_writereg(sc, REG_GLOBAL2, SWITCH_MGMT,
1131             SWITCH_MGMT_PRI_MASK |
1132             (1 << SWITCH_MGMT_RSVD2CPU) |
1133             SWITCH_MGMT_FC_PRI_MASK |
1134             (1 << SWITCH_MGMT_FORCEFLOW));
1135
1136         e6000sw_atu_flush(dev, sc, NO_OPERATION);
1137         e6000sw_atu_mac_table(dev, sc, NULL, NO_OPERATION);
1138         e6000sw_set_atustat(dev, sc, 0, COUNT_ALL);
1139
1140         /* Set ATU AgeTime to 15 seconds */
1141         atu_age = 1;
1142
1143         atu_ctrl = e6000sw_readreg(sc, REG_GLOBAL, ATU_CONTROL);
1144
1145         /* Set new AgeTime field */
1146         atu_ctrl &= ~ATU_CONTROL_AGETIME_MASK;
1147         e6000sw_writereg(sc, REG_GLOBAL, ATU_CONTROL, atu_ctrl |
1148             (atu_age << ATU_CONTROL_AGETIME));
1149 }
1150
1151 static void
1152 e6000sw_port_vlan_conf(e6000sw_softc_t *sc)
1153 {
1154         int i, port, ret;
1155         uint32_t members;
1156
1157         /* Disable all ports */
1158         for (port = 0; port < sc->num_ports; port++) {
1159                 ret = e6000sw_readreg(sc, REG_PORT(port), PORT_CONTROL);
1160                 e6000sw_writereg(sc, REG_PORT(port), PORT_CONTROL,
1161                     (ret & ~PORT_CONTROL_ENABLE));
1162         }
1163
1164         /* Set port priority */
1165         for (port = 0; port < sc->num_ports; port++) {
1166                 if (!e6000sw_is_portenabled(sc, port))
1167                         continue;
1168                 ret = e6000sw_readreg(sc, REG_PORT(port), PORT_VID);
1169                 ret &= ~PORT_VID_PRIORITY_MASK;
1170                 e6000sw_writereg(sc, REG_PORT(port), PORT_VID, ret);
1171         }
1172
1173         /* Set VID map */
1174         for (port = 0; port < sc->num_ports; port++) {
1175                 if (!e6000sw_is_portenabled(sc, port))
1176                         continue;
1177                 ret = e6000sw_readreg(sc, REG_PORT(port), PORT_VID);
1178                 ret &= ~PORT_VID_DEF_VID_MASK;
1179                 ret |= (port + 1);
1180                 e6000sw_writereg(sc, REG_PORT(port), PORT_VID, ret);
1181         }
1182
1183         /* Enable all ports */
1184         for (port = 0; port < sc->num_ports; port++) {
1185                 if (!e6000sw_is_portenabled(sc, port))
1186                         continue;
1187                 ret = e6000sw_readreg(sc, REG_PORT(port), PORT_CONTROL);
1188                 e6000sw_writereg(sc, REG_PORT(port), PORT_CONTROL,
1189                     (ret | PORT_CONTROL_ENABLE));
1190         }
1191
1192         /* Set VLAN mode. */
1193         sc->vlan_mode = ETHERSWITCH_VLAN_PORT;
1194         etherswitch_info.es_nvlangroups = sc->num_ports;
1195         for (port = 0; port < sc->num_ports; port++) {
1196                 members = 0;
1197                 if (e6000sw_is_portenabled(sc, port)) {
1198                         for (i = 0; i < sc->num_ports; i++) {
1199                                 if (i == port || !e6000sw_is_portenabled(sc, i))
1200                                         continue;
1201                                 members |= (1 << i);
1202                         }
1203                 }
1204                 e6000sw_port_vlan_assign(sc, port, port + 1, members);
1205         }
1206 }
1207
1208 static void
1209 e6000sw_set_atustat(device_t dev, e6000sw_softc_t *sc, int bin, int flag)
1210 {
1211         uint16_t ret;
1212
1213         ret = e6000sw_readreg(sc, REG_GLOBAL2, ATU_STATS);
1214         e6000sw_writereg(sc, REG_GLOBAL2, ATU_STATS, (bin << ATU_STATS_BIN ) |
1215             (flag << ATU_STATS_FLAG));
1216 }
1217
1218 static int
1219 e6000sw_atu_mac_table(device_t dev, e6000sw_softc_t *sc, struct atu_opt *atu,
1220     int flag)
1221 {
1222         uint16_t ret_opt;
1223         uint16_t ret_data;
1224         int retries;
1225
1226         if (flag == NO_OPERATION)
1227                 return (0);
1228         else if ((flag & (LOAD_FROM_FIB | PURGE_FROM_FIB | GET_NEXT_IN_FIB |
1229             GET_VIOLATION_DATA | CLEAR_VIOLATION_DATA)) == 0) {
1230                 device_printf(dev, "Wrong Opcode for ATU operation\n");
1231                 return (EINVAL);
1232         }
1233
1234         ret_opt = e6000sw_readreg(sc, REG_GLOBAL, ATU_OPERATION);
1235
1236         if (ret_opt & ATU_UNIT_BUSY) {
1237                 device_printf(dev, "ATU unit is busy, cannot access"
1238                     "register\n");
1239                 return (EBUSY);
1240         } else {
1241                 if(flag & LOAD_FROM_FIB) {
1242                         ret_data = e6000sw_readreg(sc, REG_GLOBAL, ATU_DATA);
1243                         e6000sw_writereg(sc, REG_GLOBAL2, ATU_DATA, (ret_data &
1244                             ~ENTRY_STATE));
1245                 }
1246                 e6000sw_writereg(sc, REG_GLOBAL, ATU_MAC_ADDR01, atu->mac_01);
1247                 e6000sw_writereg(sc, REG_GLOBAL, ATU_MAC_ADDR23, atu->mac_23);
1248                 e6000sw_writereg(sc, REG_GLOBAL, ATU_MAC_ADDR45, atu->mac_45);
1249                 e6000sw_writereg(sc, REG_GLOBAL, ATU_FID, atu->fid);
1250
1251                 e6000sw_writereg(sc, REG_GLOBAL, ATU_OPERATION, (ret_opt |
1252                     ATU_UNIT_BUSY | flag));
1253
1254                 retries = E6000SW_RETRIES;
1255                 while (--retries & (e6000sw_readreg(sc, REG_GLOBAL,
1256                     ATU_OPERATION) & ATU_UNIT_BUSY))
1257                         DELAY(1);
1258
1259                 if (retries == 0)
1260                         device_printf(dev, "Timeout while flushing\n");
1261                 else if (flag & GET_NEXT_IN_FIB) {
1262                         atu->mac_01 = e6000sw_readreg(sc, REG_GLOBAL,
1263                             ATU_MAC_ADDR01);
1264                         atu->mac_23 = e6000sw_readreg(sc, REG_GLOBAL,
1265                             ATU_MAC_ADDR23);
1266                         atu->mac_45 = e6000sw_readreg(sc, REG_GLOBAL,
1267                             ATU_MAC_ADDR45);
1268                 }
1269         }
1270
1271         return (0);
1272 }
1273
1274 static int
1275 e6000sw_atu_flush(device_t dev, e6000sw_softc_t *sc, int flag)
1276 {
1277         uint16_t ret;
1278         int retries;
1279
1280         if (flag == NO_OPERATION)
1281                 return (0);
1282
1283         ret = e6000sw_readreg(sc, REG_GLOBAL, ATU_OPERATION);
1284         if (ret & ATU_UNIT_BUSY) {
1285                 device_printf(dev, "Atu unit is busy, cannot flush\n");
1286                 return (EBUSY);
1287         } else {
1288                 e6000sw_writereg(sc, REG_GLOBAL, ATU_OPERATION, (ret |
1289                     ATU_UNIT_BUSY | flag));
1290                 retries = E6000SW_RETRIES;
1291                 while (--retries & (e6000sw_readreg(sc, REG_GLOBAL,
1292                     ATU_OPERATION) & ATU_UNIT_BUSY))
1293                         DELAY(1);
1294
1295                 if (retries == 0)
1296                         device_printf(dev, "Timeout while flushing\n");
1297         }
1298
1299         return (0);
1300 }