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1 /*-
2  * Copyright (c) 2010-2011 Solarflare Communications, Inc.
3  * All rights reserved.
4  *
5  * This software was developed in part by Philip Paeps under contract for
6  * Solarflare Communications, Inc.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32
33 #include <sys/types.h>
34 #include <sys/limits.h>
35 #include <net/ethernet.h>
36 #include <net/if_dl.h>
37
38 #include "common/efx.h"
39
40 #include "sfxge.h"
41
42 static int
43 sfxge_mac_stat_update(struct sfxge_softc *sc)
44 {
45         struct sfxge_port *port = &sc->port;
46         efsys_mem_t *esmp = &(port->mac_stats.dma_buf);
47         clock_t now;
48         unsigned int count;
49         int rc;
50
51         mtx_lock(&port->lock);
52
53         if (port->init_state != SFXGE_PORT_STARTED) {
54                 rc = 0;
55                 goto out;
56         }
57
58         now = ticks;
59         if (now - port->mac_stats.update_time < hz) {
60                 rc = 0;
61                 goto out;
62         }
63
64         port->mac_stats.update_time = now;
65
66         /* If we're unlucky enough to read statistics wduring the DMA, wait
67          * up to 10ms for it to finish (typically takes <500us) */
68         for (count = 0; count < 100; ++count) {
69                 EFSYS_PROBE1(wait, unsigned int, count);
70
71                 /* Synchronize the DMA memory for reading */
72                 bus_dmamap_sync(esmp->esm_tag, esmp->esm_map,
73                     BUS_DMASYNC_POSTREAD);
74
75                 /* Try to update the cached counters */
76                 if ((rc = efx_mac_stats_update(sc->enp, esmp,
77                     port->mac_stats.decode_buf, NULL)) != EAGAIN)
78                         goto out;
79
80                 DELAY(100);
81         }
82
83         rc = ETIMEDOUT;
84 out:
85         mtx_unlock(&port->lock);
86         return rc;
87 }
88
89 static int
90 sfxge_mac_stat_handler(SYSCTL_HANDLER_ARGS)
91 {
92         struct sfxge_softc *sc = arg1;
93         unsigned int id = arg2;
94         int rc;
95
96         if ((rc = sfxge_mac_stat_update(sc)) != 0)
97                 return rc;
98
99         return SYSCTL_OUT(req,
100                           (uint64_t *)sc->port.mac_stats.decode_buf + id,
101                           sizeof(uint64_t));
102 }
103
104 static void
105 sfxge_mac_stat_init(struct sfxge_softc *sc)
106 {
107         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
108         struct sysctl_oid_list *stat_list;
109         unsigned int id;
110         const char *name;
111
112         stat_list = SYSCTL_CHILDREN(sc->stats_node);
113
114         /* Initialise the named stats */
115         for (id = 0; id < EFX_MAC_NSTATS; id++) {
116                 name = efx_mac_stat_name(sc->enp, id);
117                 SYSCTL_ADD_PROC(
118                         ctx, stat_list,
119                         OID_AUTO, name, CTLTYPE_U64|CTLFLAG_RD,
120                         sc, id, sfxge_mac_stat_handler, "Q",
121                         "");
122         }
123 }
124
125 #ifdef SFXGE_HAVE_PAUSE_MEDIAOPTS
126
127 static unsigned int
128 sfxge_port_wanted_fc(struct sfxge_softc *sc)
129 {
130         struct ifmedia_entry *ifm = sc->media.ifm_cur;
131
132         if (ifm->ifm_media == (IFM_ETHER | IFM_AUTO))
133                 return EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE;
134         return ((ifm->ifm_media & IFM_ETH_RXPAUSE) ? EFX_FCNTL_RESPOND : 0) |
135                 ((ifm->ifm_media & IFM_ETH_TXPAUSE) ? EFX_FCNTL_GENERATE : 0);
136 }
137
138 static unsigned int
139 sfxge_port_link_fc_ifm(struct sfxge_softc *sc)
140 {
141         unsigned int wanted_fc, link_fc;
142
143         efx_mac_fcntl_get(sc->enp, &wanted_fc, &link_fc);
144         return ((link_fc & EFX_FCNTL_RESPOND) ? IFM_ETH_RXPAUSE : 0) |
145                 ((link_fc & EFX_FCNTL_GENERATE) ? IFM_ETH_TXPAUSE : 0);
146 }
147
148 #else /* !SFXGE_HAVE_PAUSE_MEDIAOPTS */
149
150 static unsigned int
151 sfxge_port_wanted_fc(struct sfxge_softc *sc)
152 {
153         return sc->port.wanted_fc;
154 }
155
156 static unsigned int
157 sfxge_port_link_fc_ifm(struct sfxge_softc *sc)
158 {
159         return 0;
160 }
161
162 static int
163 sfxge_port_wanted_fc_handler(SYSCTL_HANDLER_ARGS)
164 {
165         struct sfxge_softc *sc;
166         struct sfxge_port *port;
167         unsigned int fcntl;
168         int error;
169
170         sc = arg1;
171         port = &sc->port;
172
173         mtx_lock(&port->lock);
174
175         if (req->newptr) {
176                 if ((error = SYSCTL_IN(req, &fcntl, sizeof(fcntl))) != 0)
177                         goto out;
178
179                 if (port->wanted_fc == fcntl)
180                         goto out;
181
182                 port->wanted_fc = fcntl;
183
184                 if (port->init_state != SFXGE_PORT_STARTED)
185                         goto out;
186
187                 error = efx_mac_fcntl_set(sc->enp, port->wanted_fc, B_TRUE);
188         } else {
189                 error = SYSCTL_OUT(req, &port->wanted_fc,
190                                    sizeof(port->wanted_fc));
191         }
192
193 out:
194         mtx_unlock(&port->lock);
195
196         return (error);
197 }
198
199 static int
200 sfxge_port_link_fc_handler(SYSCTL_HANDLER_ARGS)
201 {
202         struct sfxge_softc *sc;
203         struct sfxge_port *port;
204         unsigned int wanted_fc, link_fc;
205         int error;
206
207         sc = arg1;
208         port = &sc->port;
209
210         mtx_lock(&port->lock);
211         if (port->init_state == SFXGE_PORT_STARTED && SFXGE_LINK_UP(sc))
212                 efx_mac_fcntl_get(sc->enp, &wanted_fc, &link_fc);
213         else
214                 link_fc = 0;
215         error = SYSCTL_OUT(req, &link_fc, sizeof(link_fc));
216         mtx_unlock(&port->lock);
217
218         return (error);
219 }
220
221 #endif /* SFXGE_HAVE_PAUSE_MEDIAOPTS */
222
223 static const u_long sfxge_link_baudrate[EFX_LINK_NMODES] = {
224         [EFX_LINK_10HDX]        = IF_Mbps(10),
225         [EFX_LINK_10FDX]        = IF_Mbps(10),
226         [EFX_LINK_100HDX]       = IF_Mbps(100),
227         [EFX_LINK_100FDX]       = IF_Mbps(100),
228         [EFX_LINK_1000HDX]      = IF_Gbps(1),
229         [EFX_LINK_1000FDX]      = IF_Gbps(1),
230         [EFX_LINK_10000FDX]     = MIN(IF_Gbps(10ULL), ULONG_MAX),
231 };
232
233 void
234 sfxge_mac_link_update(struct sfxge_softc *sc, efx_link_mode_t mode)
235 {
236         struct sfxge_port *port;
237         int link_state;
238         
239         port = &sc->port;
240
241         if (port->link_mode == mode)
242                 return;
243
244         port->link_mode = mode;
245
246         /* Push link state update to the OS */
247         link_state = (port->link_mode != EFX_LINK_DOWN ?
248                       LINK_STATE_UP : LINK_STATE_DOWN);
249         sc->ifnet->if_baudrate = sfxge_link_baudrate[port->link_mode];
250         if_link_state_change(sc->ifnet, link_state);
251 }
252
253 static void
254 sfxge_mac_poll_work(void *arg, int npending)
255 {
256         struct sfxge_softc *sc;
257         efx_nic_t *enp;
258         struct sfxge_port *port;
259         efx_link_mode_t mode;
260
261         sc = (struct sfxge_softc *)arg;
262         enp = sc->enp;
263         port = &sc->port;
264
265         mtx_lock(&port->lock);
266
267         if (port->init_state != SFXGE_PORT_STARTED)
268                 goto done;
269
270         /* This may sleep waiting for MCDI completion */
271         (void)efx_port_poll(enp, &mode);
272         sfxge_mac_link_update(sc, mode);
273
274 done:
275         mtx_unlock(&port->lock);
276 }
277
278 static int
279 sfxge_mac_filter_set_locked(struct sfxge_softc *sc)
280 {
281         unsigned int bucket[EFX_MAC_HASH_BITS];
282         struct ifnet *ifp = sc->ifnet;
283         struct ifmultiaddr *ifma;
284         struct sockaddr_dl *sa;
285         efx_nic_t *enp = sc->enp;
286         unsigned int index;
287         int rc;
288
289         /* Set promisc-unicast and broadcast filter bits */
290         if ((rc = efx_mac_filter_set(enp, !!(ifp->if_flags & IFF_PROMISC),
291                                      B_TRUE)) != 0)
292                 return rc;
293
294         /* Set multicast hash filter */
295         if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) {
296                 for (index = 0; index < EFX_MAC_HASH_BITS; index++)
297                         bucket[index] = 1;
298         } else {
299                 /* Broadcast frames also go through the multicast
300                  * filter, and the broadcast address hashes to
301                  * 0xff. */
302                 bucket[0xff] = 1;
303
304                 if_maddr_rlock(ifp);
305                 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
306                         if (ifma->ifma_addr->sa_family == AF_LINK) {
307                                 sa = (struct sockaddr_dl *)ifma->ifma_addr;
308                                 index = ether_crc32_le(LLADDR(sa), 6) & 0xff;
309                                 bucket[index] = 1;
310                         }
311                 }
312                 if_maddr_runlock(ifp);
313         }
314         return efx_mac_hash_set(enp, bucket);
315 }
316
317 int
318 sfxge_mac_filter_set(struct sfxge_softc *sc)
319 {
320         struct sfxge_port *port = &sc->port;
321         int rc;
322
323         KASSERT(port->init_state == SFXGE_PORT_STARTED, ("port not started"));
324
325         mtx_lock(&port->lock);
326         rc = sfxge_mac_filter_set_locked(sc);
327         mtx_unlock(&port->lock);
328         return rc;
329 }
330
331 void
332 sfxge_port_stop(struct sfxge_softc *sc)
333 {
334         struct sfxge_port *port;
335         efx_nic_t *enp;
336
337         port = &sc->port;
338         enp = sc->enp;
339
340         mtx_lock(&port->lock);
341
342         KASSERT(port->init_state == SFXGE_PORT_STARTED,
343             ("port not started"));
344
345         port->init_state = SFXGE_PORT_INITIALIZED;
346
347         port->mac_stats.update_time = 0;
348
349         /* This may call MCDI */
350         (void)efx_mac_drain(enp, B_TRUE);
351
352         (void)efx_mac_stats_periodic(enp, &port->mac_stats.dma_buf, 0, B_FALSE);
353
354         port->link_mode = EFX_LINK_UNKNOWN;
355
356         /* Destroy the common code port object. */
357         efx_port_fini(sc->enp);
358
359         mtx_unlock(&port->lock);
360 }
361
362 int
363 sfxge_port_start(struct sfxge_softc *sc)
364 {
365         uint8_t mac_addr[ETHER_ADDR_LEN];
366         struct ifnet *ifp = sc->ifnet;
367         struct sfxge_port *port;
368         efx_nic_t *enp;
369         size_t pdu;
370         int rc;
371
372         port = &sc->port;
373         enp = sc->enp;
374
375         mtx_lock(&port->lock);
376
377         KASSERT(port->init_state == SFXGE_PORT_INITIALIZED,
378             ("port not initialized"));
379
380         /* Initialize the port object in the common code. */
381         if ((rc = efx_port_init(sc->enp)) != 0)
382                 goto fail;
383
384         /* Set the SDU */
385         pdu = EFX_MAC_PDU(ifp->if_mtu);
386         if ((rc = efx_mac_pdu_set(enp, pdu)) != 0)
387                 goto fail2;
388
389         if ((rc = efx_mac_fcntl_set(enp, sfxge_port_wanted_fc(sc), B_TRUE))
390             != 0)
391                 goto fail2;
392
393         /* Set the unicast address */
394         if_addr_rlock(ifp);
395         bcopy(LLADDR((struct sockaddr_dl *)ifp->if_addr->ifa_addr),
396               mac_addr, sizeof(mac_addr));
397         if_addr_runlock(ifp);
398         if ((rc = efx_mac_addr_set(enp, mac_addr)) != 0)
399                 goto fail;
400
401         sfxge_mac_filter_set_locked(sc);
402
403         /* Update MAC stats by DMA every second */
404         if ((rc = efx_mac_stats_periodic(enp, &port->mac_stats.dma_buf,
405             1000, B_FALSE)) != 0)
406                 goto fail2;
407
408         if ((rc = efx_mac_drain(enp, B_FALSE)) != 0)
409                 goto fail3;
410
411         if ((rc = efx_phy_adv_cap_set(sc->enp, sc->media.ifm_cur->ifm_data))
412             != 0)
413                 goto fail4;
414
415         port->init_state = SFXGE_PORT_STARTED;
416
417         /* Single poll in case there were missing initial events */
418         mtx_unlock(&port->lock);
419         sfxge_mac_poll_work(sc, 0);
420
421         return (0);
422
423 fail4:
424         (void)efx_mac_drain(enp, B_TRUE);
425 fail3:
426         (void)efx_mac_stats_periodic(enp, &port->mac_stats.dma_buf,
427             0, B_FALSE);
428 fail2:
429         efx_port_fini(sc->enp);
430 fail:
431         mtx_unlock(&port->lock);
432
433         return (rc);
434 }
435
436 static int
437 sfxge_phy_stat_update(struct sfxge_softc *sc)
438 {
439         struct sfxge_port *port = &sc->port;
440         efsys_mem_t *esmp = &port->phy_stats.dma_buf;
441         clock_t now;
442         unsigned int count;
443         int rc;
444
445         mtx_lock(&port->lock);
446
447         if (port->init_state != SFXGE_PORT_STARTED) {
448                 rc = 0;
449                 goto out;
450         }
451
452         now = ticks;
453         if (now - port->phy_stats.update_time < hz) {
454                 rc = 0;
455                 goto out;
456         }
457
458         port->phy_stats.update_time = now;
459
460         /* If we're unlucky enough to read statistics wduring the DMA, wait
461          * up to 10ms for it to finish (typically takes <500us) */
462         for (count = 0; count < 100; ++count) {
463                 EFSYS_PROBE1(wait, unsigned int, count);
464
465                 /* Synchronize the DMA memory for reading */
466                 bus_dmamap_sync(esmp->esm_tag, esmp->esm_map,
467                     BUS_DMASYNC_POSTREAD);
468
469                 /* Try to update the cached counters */
470                 if ((rc = efx_phy_stats_update(sc->enp, esmp,
471                     port->phy_stats.decode_buf)) != EAGAIN)
472                         goto out;
473
474                 DELAY(100);
475         }
476
477         rc = ETIMEDOUT;
478 out:
479         mtx_unlock(&port->lock);
480         return rc;
481 }
482
483 static int
484 sfxge_phy_stat_handler(SYSCTL_HANDLER_ARGS)
485 {
486         struct sfxge_softc *sc = arg1;
487         unsigned int id = arg2;
488         int rc;
489
490         if ((rc = sfxge_phy_stat_update(sc)) != 0)
491                 return rc;
492
493         return SYSCTL_OUT(req,
494                           (uint32_t *)sc->port.phy_stats.decode_buf + id,
495                           sizeof(uint32_t));
496 }
497
498 static void
499 sfxge_phy_stat_init(struct sfxge_softc *sc)
500 {
501         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
502         struct sysctl_oid_list *stat_list;
503         unsigned int id;
504         const char *name;
505         uint64_t stat_mask = efx_nic_cfg_get(sc->enp)->enc_phy_stat_mask;
506
507         stat_list = SYSCTL_CHILDREN(sc->stats_node);
508
509         /* Initialise the named stats */
510         for (id = 0; id < EFX_PHY_NSTATS; id++) {
511                 if (!(stat_mask & ((uint64_t)1 << id)))
512                         continue;
513                 name = efx_phy_stat_name(sc->enp, id);
514                 SYSCTL_ADD_PROC(
515                         ctx, stat_list,
516                         OID_AUTO, name, CTLTYPE_UINT|CTLFLAG_RD,
517                         sc, id, sfxge_phy_stat_handler,
518                         id == EFX_PHY_STAT_OUI ? "IX" : "IU",
519                         "");
520         }
521 }
522
523 void
524 sfxge_port_fini(struct sfxge_softc *sc)
525 {
526         struct sfxge_port *port;
527         efsys_mem_t *esmp;
528
529         port = &sc->port;
530         esmp = &port->mac_stats.dma_buf;
531
532         KASSERT(port->init_state == SFXGE_PORT_INITIALIZED,
533             ("Port not initialized"));
534
535         port->init_state = SFXGE_PORT_UNINITIALIZED;
536
537         port->link_mode = EFX_LINK_UNKNOWN;
538
539         /* Finish with PHY DMA memory */
540         sfxge_dma_free(&port->phy_stats.dma_buf);
541         free(port->phy_stats.decode_buf, M_SFXGE);
542
543         sfxge_dma_free(esmp);
544         free(port->mac_stats.decode_buf, M_SFXGE);
545
546         mtx_destroy(&port->lock);
547
548         port->sc = NULL;
549 }
550
551 int
552 sfxge_port_init(struct sfxge_softc *sc)
553 {
554         struct sfxge_port *port;
555         struct sysctl_ctx_list *sysctl_ctx;
556         struct sysctl_oid *sysctl_tree;
557         efsys_mem_t *mac_stats_buf, *phy_stats_buf;
558         int rc;
559
560         port = &sc->port;
561         mac_stats_buf = &port->mac_stats.dma_buf;
562         phy_stats_buf = &port->phy_stats.dma_buf;
563
564         KASSERT(port->init_state == SFXGE_PORT_UNINITIALIZED,
565             ("Port already initialized"));
566
567         port->sc = sc;
568
569         mtx_init(&port->lock, "sfxge_port", NULL, MTX_DEF);
570
571         port->phy_stats.decode_buf = malloc(EFX_PHY_NSTATS * sizeof(uint32_t),
572                                             M_SFXGE, M_WAITOK | M_ZERO);
573         if ((rc = sfxge_dma_alloc(sc, EFX_PHY_STATS_SIZE, phy_stats_buf)) != 0)
574                 goto fail;
575         bzero(phy_stats_buf->esm_base, phy_stats_buf->esm_size);
576         sfxge_phy_stat_init(sc);
577
578         sysctl_ctx = device_get_sysctl_ctx(sc->dev);
579         sysctl_tree = device_get_sysctl_tree(sc->dev);
580
581 #ifndef SFXGE_HAVE_PAUSE_MEDIAOPTS
582         /* If flow control cannot be configured or reported through
583          * ifmedia, provide sysctls for it. */
584         port->wanted_fc = EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE;
585         SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO,
586             "wanted_fc", CTLTYPE_UINT|CTLFLAG_RW, sc, 0,
587             sfxge_port_wanted_fc_handler, "IU", "wanted flow control mode");
588         SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO,
589             "link_fc", CTLTYPE_UINT|CTLFLAG_RD, sc, 0,
590             sfxge_port_link_fc_handler, "IU", "link flow control mode");
591 #endif
592
593         port->mac_stats.decode_buf = malloc(EFX_MAC_NSTATS * sizeof(uint64_t),
594                                             M_SFXGE, M_WAITOK | M_ZERO);
595         if ((rc = sfxge_dma_alloc(sc, EFX_MAC_STATS_SIZE, mac_stats_buf)) != 0)
596                 goto fail2;
597         bzero(mac_stats_buf->esm_base, mac_stats_buf->esm_size);
598         sfxge_mac_stat_init(sc);
599
600         port->init_state = SFXGE_PORT_INITIALIZED;
601
602         return (0);
603
604 fail2:
605         free(port->mac_stats.decode_buf, M_SFXGE);
606         sfxge_dma_free(phy_stats_buf);
607 fail:
608         free(port->phy_stats.decode_buf, M_SFXGE);
609         (void)mtx_destroy(&port->lock);
610         port->sc = NULL;
611         return rc;
612 }
613
614 static int sfxge_link_mode[EFX_PHY_MEDIA_NTYPES][EFX_LINK_NMODES] = {
615         [EFX_PHY_MEDIA_CX4] = {
616                 [EFX_LINK_10000FDX]     = IFM_ETHER | IFM_FDX | IFM_10G_CX4,
617         },
618         [EFX_PHY_MEDIA_KX4] = {
619                 [EFX_LINK_10000FDX]     = IFM_ETHER | IFM_FDX | IFM_10G_KX4,
620         },
621         [EFX_PHY_MEDIA_XFP] = {
622                 /* Don't know the module type, but assume SR for now. */
623                 [EFX_LINK_10000FDX]     = IFM_ETHER | IFM_FDX | IFM_10G_SR,
624         },
625         [EFX_PHY_MEDIA_SFP_PLUS] = {
626                 /* Don't know the module type, but assume SX/SR for now. */
627                 [EFX_LINK_1000FDX]      = IFM_ETHER | IFM_FDX | IFM_1000_SX,
628                 [EFX_LINK_10000FDX]     = IFM_ETHER | IFM_FDX | IFM_10G_SR,
629         },
630         [EFX_PHY_MEDIA_BASE_T] = {
631                 [EFX_LINK_10HDX]        = IFM_ETHER | IFM_HDX | IFM_10_T,
632                 [EFX_LINK_10FDX]        = IFM_ETHER | IFM_FDX | IFM_10_T,
633                 [EFX_LINK_100HDX]       = IFM_ETHER | IFM_HDX | IFM_100_TX,
634                 [EFX_LINK_100FDX]       = IFM_ETHER | IFM_FDX | IFM_100_TX,
635                 [EFX_LINK_1000HDX]      = IFM_ETHER | IFM_HDX | IFM_1000_T,
636                 [EFX_LINK_1000FDX]      = IFM_ETHER | IFM_FDX | IFM_1000_T,
637                 [EFX_LINK_10000FDX]     = IFM_ETHER | IFM_FDX | IFM_10G_T,
638         },
639 };
640
641 static void
642 sfxge_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
643 {
644         struct sfxge_softc *sc;
645         efx_phy_media_type_t medium_type;
646         efx_link_mode_t mode;
647
648         sc = ifp->if_softc;
649         sx_xlock(&sc->softc_lock);
650
651         ifmr->ifm_status = IFM_AVALID;
652         ifmr->ifm_active = IFM_ETHER;
653
654         if (SFXGE_RUNNING(sc) && SFXGE_LINK_UP(sc)) {
655                 ifmr->ifm_status |= IFM_ACTIVE;
656
657                 efx_phy_media_type_get(sc->enp, &medium_type);
658                 mode = sc->port.link_mode;
659                 ifmr->ifm_active |= sfxge_link_mode[medium_type][mode];
660                 ifmr->ifm_active |= sfxge_port_link_fc_ifm(sc);
661         }
662
663         sx_xunlock(&sc->softc_lock);
664 }
665
666 static int
667 sfxge_media_change(struct ifnet *ifp)
668 {
669         struct sfxge_softc *sc;
670         struct ifmedia_entry *ifm;
671         int rc;
672
673         sc = ifp->if_softc;
674         ifm = sc->media.ifm_cur;
675
676         sx_xlock(&sc->softc_lock);
677
678         if (!SFXGE_RUNNING(sc)) {
679                 rc = 0;
680                 goto out;
681         }
682
683         rc = efx_mac_fcntl_set(sc->enp, sfxge_port_wanted_fc(sc), B_TRUE);
684         if (rc != 0)
685                 goto out;
686
687         rc = efx_phy_adv_cap_set(sc->enp, ifm->ifm_data);
688 out:
689         sx_xunlock(&sc->softc_lock);    
690
691         return rc;
692 }
693
694 int sfxge_port_ifmedia_init(struct sfxge_softc *sc)
695 {
696         efx_phy_media_type_t medium_type;
697         uint32_t cap_mask, mode_cap_mask;
698         efx_link_mode_t mode;
699         int mode_ifm, best_mode_ifm = 0;
700         int rc;
701
702         /* We need port state to initialise the ifmedia list. */
703         if ((rc = efx_nic_init(sc->enp)) != 0)
704                 goto out;
705         if ((rc = efx_port_init(sc->enp)) != 0)
706                 goto out2;
707
708         /*
709          * Register ifconfig callbacks for querying and setting the
710          * link mode and link status.
711          */
712         ifmedia_init(&sc->media, IFM_IMASK, sfxge_media_change,
713             sfxge_media_status);
714
715         /*
716          * Map firmware medium type and capabilities to ifmedia types.
717          * ifmedia does not distinguish between forcing the link mode
718          * and disabling auto-negotiation.  1000BASE-T and 10GBASE-T
719          * require AN even if only one link mode is enabled, and for
720          * 100BASE-TX it is useful even if the link mode is forced.
721          * Therefore we never disable auto-negotiation.
722          *
723          * Also enable and advertise flow control by default.
724          */
725
726         efx_phy_media_type_get(sc->enp, &medium_type);
727         efx_phy_adv_cap_get(sc->enp, EFX_PHY_CAP_PERM, &cap_mask);
728
729         EFX_STATIC_ASSERT(EFX_LINK_10HDX == EFX_PHY_CAP_10HDX + 1);
730         EFX_STATIC_ASSERT(EFX_LINK_10FDX == EFX_PHY_CAP_10FDX + 1);
731         EFX_STATIC_ASSERT(EFX_LINK_100HDX == EFX_PHY_CAP_100HDX + 1);
732         EFX_STATIC_ASSERT(EFX_LINK_100FDX == EFX_PHY_CAP_100FDX + 1);
733         EFX_STATIC_ASSERT(EFX_LINK_1000HDX == EFX_PHY_CAP_1000HDX + 1);
734         EFX_STATIC_ASSERT(EFX_LINK_1000FDX == EFX_PHY_CAP_1000FDX + 1);
735         EFX_STATIC_ASSERT(EFX_LINK_10000FDX == EFX_PHY_CAP_10000FDX + 1);
736
737         for (mode = EFX_LINK_10HDX; mode <= EFX_LINK_10000FDX; mode++) {
738                 mode_cap_mask = 1 << (mode - 1);
739                 mode_ifm = sfxge_link_mode[medium_type][mode];
740
741                 if ((cap_mask & mode_cap_mask) && mode_ifm) {
742                         mode_cap_mask |= cap_mask & (1 << EFX_PHY_CAP_AN);
743
744 #ifdef SFXGE_HAVE_PAUSE_MEDIAOPTS
745                         /* No flow-control */
746                         ifmedia_add(&sc->media, mode_ifm, mode_cap_mask, NULL);
747
748                         /* Respond-only.  If using AN, we implicitly
749                          * offer symmetric as well, but that doesn't
750                          * mean we *have* to generate pause frames.
751                          */
752                         mode_cap_mask |= cap_mask & ((1 << EFX_PHY_CAP_PAUSE) |
753                                                      (1 << EFX_PHY_CAP_ASYM));
754                         mode_ifm |= IFM_ETH_RXPAUSE;
755                         ifmedia_add(&sc->media, mode_ifm, mode_cap_mask, NULL);
756
757                         /* Symmetric */
758                         mode_cap_mask &= ~(1 << EFX_PHY_CAP_ASYM);
759                         mode_ifm |= IFM_ETH_TXPAUSE;
760 #else /* !SFXGE_HAVE_PAUSE_MEDIAOPTS */
761                         mode_cap_mask |= cap_mask & (1 << EFX_PHY_CAP_PAUSE);
762 #endif
763                         ifmedia_add(&sc->media, mode_ifm, mode_cap_mask, NULL);
764
765                         /* Link modes are numbered in order of speed,
766                          * so assume the last one available is the best.
767                          */
768                         best_mode_ifm = mode_ifm;
769                 }
770         }
771
772         if (cap_mask & (1 << EFX_PHY_CAP_AN)) {
773                 /* Add autoselect mode. */
774                 mode_ifm = IFM_ETHER | IFM_AUTO;
775                 ifmedia_add(&sc->media, mode_ifm,
776                             cap_mask & ~(1 << EFX_PHY_CAP_ASYM), NULL);
777                 best_mode_ifm = mode_ifm;
778         }
779
780         if (best_mode_ifm)
781                 ifmedia_set(&sc->media, best_mode_ifm);
782
783         /* Now discard port state until interface is started. */
784         efx_port_fini(sc->enp);
785 out2:
786         efx_nic_fini(sc->enp);
787 out:
788         return rc;
789 }