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10#include <linux/module.h>
11
12#include <linux/interrupt.h>
13#include <linux/msi.h>
14#include <linux/kthread.h>
15#include <linux/workqueue.h>
16
17#include <linux/fsl/mc.h>
18
19#include "ethsw.h"
20
21static struct workqueue_struct *ethsw_owq;
22
23
24#define DPSW_MIN_VER_MAJOR 8
25#define DPSW_MIN_VER_MINOR 1
26
27#define DEFAULT_VLAN_ID 1
28
29static int ethsw_add_vlan(struct ethsw_core *ethsw, u16 vid)
30{
31 int err;
32
33 struct dpsw_vlan_cfg vcfg = {
34 .fdb_id = 0,
35 };
36
37 err = dpsw_vlan_add(ethsw->mc_io, 0,
38 ethsw->dpsw_handle, vid, &vcfg);
39 if (err) {
40 dev_err(ethsw->dev, "dpsw_vlan_add err %d\n", err);
41 return err;
42 }
43 ethsw->vlans[vid] = ETHSW_VLAN_MEMBER;
44
45 return 0;
46}
47
48static int ethsw_port_set_pvid(struct ethsw_port_priv *port_priv, u16 pvid)
49{
50 struct ethsw_core *ethsw = port_priv->ethsw_data;
51 struct net_device *netdev = port_priv->netdev;
52 struct dpsw_tci_cfg tci_cfg = { 0 };
53 bool is_oper;
54 int err, ret;
55
56 err = dpsw_if_get_tci(ethsw->mc_io, 0, ethsw->dpsw_handle,
57 port_priv->idx, &tci_cfg);
58 if (err) {
59 netdev_err(netdev, "dpsw_if_get_tci err %d\n", err);
60 return err;
61 }
62
63 tci_cfg.vlan_id = pvid;
64
65
66 is_oper = netif_oper_up(netdev);
67 if (is_oper) {
68 err = dpsw_if_disable(ethsw->mc_io, 0,
69 ethsw->dpsw_handle,
70 port_priv->idx);
71 if (err) {
72 netdev_err(netdev, "dpsw_if_disable err %d\n", err);
73 return err;
74 }
75 }
76
77 err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle,
78 port_priv->idx, &tci_cfg);
79 if (err) {
80 netdev_err(netdev, "dpsw_if_set_tci err %d\n", err);
81 goto set_tci_error;
82 }
83
84
85 port_priv->vlans[port_priv->pvid] &= ~ETHSW_VLAN_PVID;
86 port_priv->vlans[pvid] |= ETHSW_VLAN_PVID;
87 port_priv->pvid = pvid;
88
89set_tci_error:
90 if (is_oper) {
91 ret = dpsw_if_enable(ethsw->mc_io, 0,
92 ethsw->dpsw_handle,
93 port_priv->idx);
94 if (ret) {
95 netdev_err(netdev, "dpsw_if_enable err %d\n", ret);
96 return ret;
97 }
98 }
99
100 return err;
101}
102
103static int ethsw_port_add_vlan(struct ethsw_port_priv *port_priv,
104 u16 vid, u16 flags)
105{
106 struct ethsw_core *ethsw = port_priv->ethsw_data;
107 struct net_device *netdev = port_priv->netdev;
108 struct dpsw_vlan_if_cfg vcfg;
109 int err;
110
111 if (port_priv->vlans[vid]) {
112 netdev_warn(netdev, "VLAN %d already configured\n", vid);
113 return -EEXIST;
114 }
115
116 vcfg.num_ifs = 1;
117 vcfg.if_id[0] = port_priv->idx;
118 err = dpsw_vlan_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle, vid, &vcfg);
119 if (err) {
120 netdev_err(netdev, "dpsw_vlan_add_if err %d\n", err);
121 return err;
122 }
123
124 port_priv->vlans[vid] = ETHSW_VLAN_MEMBER;
125
126 if (flags & BRIDGE_VLAN_INFO_UNTAGGED) {
127 err = dpsw_vlan_add_if_untagged(ethsw->mc_io, 0,
128 ethsw->dpsw_handle,
129 vid, &vcfg);
130 if (err) {
131 netdev_err(netdev,
132 "dpsw_vlan_add_if_untagged err %d\n", err);
133 return err;
134 }
135 port_priv->vlans[vid] |= ETHSW_VLAN_UNTAGGED;
136 }
137
138 if (flags & BRIDGE_VLAN_INFO_PVID) {
139 err = ethsw_port_set_pvid(port_priv, vid);
140 if (err)
141 return err;
142 }
143
144 return 0;
145}
146
147static int ethsw_set_learning(struct ethsw_core *ethsw, bool enable)
148{
149 enum dpsw_fdb_learning_mode learn_mode;
150 int err;
151
152 if (enable)
153 learn_mode = DPSW_FDB_LEARNING_MODE_HW;
154 else
155 learn_mode = DPSW_FDB_LEARNING_MODE_DIS;
156
157 err = dpsw_fdb_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 0,
158 learn_mode);
159 if (err) {
160 dev_err(ethsw->dev, "dpsw_fdb_set_learning_mode err %d\n", err);
161 return err;
162 }
163 ethsw->learning = enable;
164
165 return 0;
166}
167
168static int ethsw_port_set_flood(struct ethsw_port_priv *port_priv, bool enable)
169{
170 int err;
171
172 err = dpsw_if_set_flooding(port_priv->ethsw_data->mc_io, 0,
173 port_priv->ethsw_data->dpsw_handle,
174 port_priv->idx, enable);
175 if (err) {
176 netdev_err(port_priv->netdev,
177 "dpsw_if_set_flooding err %d\n", err);
178 return err;
179 }
180 port_priv->flood = enable;
181
182 return 0;
183}
184
185static int ethsw_port_set_stp_state(struct ethsw_port_priv *port_priv, u8 state)
186{
187 struct dpsw_stp_cfg stp_cfg = {
188 .vlan_id = DEFAULT_VLAN_ID,
189 .state = state,
190 };
191 int err;
192
193 if (!netif_oper_up(port_priv->netdev) || state == port_priv->stp_state)
194 return 0;
195
196 err = dpsw_if_set_stp(port_priv->ethsw_data->mc_io, 0,
197 port_priv->ethsw_data->dpsw_handle,
198 port_priv->idx, &stp_cfg);
199 if (err) {
200 netdev_err(port_priv->netdev,
201 "dpsw_if_set_stp err %d\n", err);
202 return err;
203 }
204
205 port_priv->stp_state = state;
206
207 return 0;
208}
209
210static int ethsw_dellink_switch(struct ethsw_core *ethsw, u16 vid)
211{
212 struct ethsw_port_priv *ppriv_local = NULL;
213 int i, err;
214
215 if (!ethsw->vlans[vid])
216 return -ENOENT;
217
218 err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, vid);
219 if (err) {
220 dev_err(ethsw->dev, "dpsw_vlan_remove err %d\n", err);
221 return err;
222 }
223 ethsw->vlans[vid] = 0;
224
225 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
226 ppriv_local = ethsw->ports[i];
227 ppriv_local->vlans[vid] = 0;
228 }
229
230 return 0;
231}
232
233static int ethsw_port_fdb_add_uc(struct ethsw_port_priv *port_priv,
234 const unsigned char *addr)
235{
236 struct dpsw_fdb_unicast_cfg entry = {0};
237 int err;
238
239 entry.if_egress = port_priv->idx;
240 entry.type = DPSW_FDB_ENTRY_STATIC;
241 ether_addr_copy(entry.mac_addr, addr);
242
243 err = dpsw_fdb_add_unicast(port_priv->ethsw_data->mc_io, 0,
244 port_priv->ethsw_data->dpsw_handle,
245 0, &entry);
246 if (err)
247 netdev_err(port_priv->netdev,
248 "dpsw_fdb_add_unicast err %d\n", err);
249 return err;
250}
251
252static int ethsw_port_fdb_del_uc(struct ethsw_port_priv *port_priv,
253 const unsigned char *addr)
254{
255 struct dpsw_fdb_unicast_cfg entry = {0};
256 int err;
257
258 entry.if_egress = port_priv->idx;
259 entry.type = DPSW_FDB_ENTRY_STATIC;
260 ether_addr_copy(entry.mac_addr, addr);
261
262 err = dpsw_fdb_remove_unicast(port_priv->ethsw_data->mc_io, 0,
263 port_priv->ethsw_data->dpsw_handle,
264 0, &entry);
265
266 if (err && err != -ENXIO)
267 netdev_err(port_priv->netdev,
268 "dpsw_fdb_remove_unicast err %d\n", err);
269 return err;
270}
271
272static int ethsw_port_fdb_add_mc(struct ethsw_port_priv *port_priv,
273 const unsigned char *addr)
274{
275 struct dpsw_fdb_multicast_cfg entry = {0};
276 int err;
277
278 ether_addr_copy(entry.mac_addr, addr);
279 entry.type = DPSW_FDB_ENTRY_STATIC;
280 entry.num_ifs = 1;
281 entry.if_id[0] = port_priv->idx;
282
283 err = dpsw_fdb_add_multicast(port_priv->ethsw_data->mc_io, 0,
284 port_priv->ethsw_data->dpsw_handle,
285 0, &entry);
286
287 if (err && err != -ENXIO)
288 netdev_err(port_priv->netdev, "dpsw_fdb_add_multicast err %d\n",
289 err);
290 return err;
291}
292
293static int ethsw_port_fdb_del_mc(struct ethsw_port_priv *port_priv,
294 const unsigned char *addr)
295{
296 struct dpsw_fdb_multicast_cfg entry = {0};
297 int err;
298
299 ether_addr_copy(entry.mac_addr, addr);
300 entry.type = DPSW_FDB_ENTRY_STATIC;
301 entry.num_ifs = 1;
302 entry.if_id[0] = port_priv->idx;
303
304 err = dpsw_fdb_remove_multicast(port_priv->ethsw_data->mc_io, 0,
305 port_priv->ethsw_data->dpsw_handle,
306 0, &entry);
307
308 if (err && err != -ENAVAIL)
309 netdev_err(port_priv->netdev,
310 "dpsw_fdb_remove_multicast err %d\n", err);
311 return err;
312}
313
314static int port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
315 struct net_device *dev, const unsigned char *addr,
316 u16 vid, u16 flags,
317 struct netlink_ext_ack *extack)
318{
319 if (is_unicast_ether_addr(addr))
320 return ethsw_port_fdb_add_uc(netdev_priv(dev),
321 addr);
322 else
323 return ethsw_port_fdb_add_mc(netdev_priv(dev),
324 addr);
325}
326
327static int port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
328 struct net_device *dev,
329 const unsigned char *addr, u16 vid)
330{
331 if (is_unicast_ether_addr(addr))
332 return ethsw_port_fdb_del_uc(netdev_priv(dev),
333 addr);
334 else
335 return ethsw_port_fdb_del_mc(netdev_priv(dev),
336 addr);
337}
338
339static void port_get_stats(struct net_device *netdev,
340 struct rtnl_link_stats64 *stats)
341{
342 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
343 u64 tmp;
344 int err;
345
346 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
347 port_priv->ethsw_data->dpsw_handle,
348 port_priv->idx,
349 DPSW_CNT_ING_FRAME, &stats->rx_packets);
350 if (err)
351 goto error;
352
353 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
354 port_priv->ethsw_data->dpsw_handle,
355 port_priv->idx,
356 DPSW_CNT_EGR_FRAME, &stats->tx_packets);
357 if (err)
358 goto error;
359
360 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
361 port_priv->ethsw_data->dpsw_handle,
362 port_priv->idx,
363 DPSW_CNT_ING_BYTE, &stats->rx_bytes);
364 if (err)
365 goto error;
366
367 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
368 port_priv->ethsw_data->dpsw_handle,
369 port_priv->idx,
370 DPSW_CNT_EGR_BYTE, &stats->tx_bytes);
371 if (err)
372 goto error;
373
374 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
375 port_priv->ethsw_data->dpsw_handle,
376 port_priv->idx,
377 DPSW_CNT_ING_FRAME_DISCARD,
378 &stats->rx_dropped);
379 if (err)
380 goto error;
381
382 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
383 port_priv->ethsw_data->dpsw_handle,
384 port_priv->idx,
385 DPSW_CNT_ING_FLTR_FRAME,
386 &tmp);
387 if (err)
388 goto error;
389 stats->rx_dropped += tmp;
390
391 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
392 port_priv->ethsw_data->dpsw_handle,
393 port_priv->idx,
394 DPSW_CNT_EGR_FRAME_DISCARD,
395 &stats->tx_dropped);
396 if (err)
397 goto error;
398
399 return;
400
401error:
402 netdev_err(netdev, "dpsw_if_get_counter err %d\n", err);
403}
404
405static bool port_has_offload_stats(const struct net_device *netdev,
406 int attr_id)
407{
408 return (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT);
409}
410
411static int port_get_offload_stats(int attr_id,
412 const struct net_device *netdev,
413 void *sp)
414{
415 switch (attr_id) {
416 case IFLA_OFFLOAD_XSTATS_CPU_HIT:
417 port_get_stats((struct net_device *)netdev, sp);
418 return 0;
419 }
420
421 return -EINVAL;
422}
423
424static int port_change_mtu(struct net_device *netdev, int mtu)
425{
426 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
427 int err;
428
429 err = dpsw_if_set_max_frame_length(port_priv->ethsw_data->mc_io,
430 0,
431 port_priv->ethsw_data->dpsw_handle,
432 port_priv->idx,
433 (u16)ETHSW_L2_MAX_FRM(mtu));
434 if (err) {
435 netdev_err(netdev,
436 "dpsw_if_set_max_frame_length() err %d\n", err);
437 return err;
438 }
439
440 netdev->mtu = mtu;
441 return 0;
442}
443
444static int port_carrier_state_sync(struct net_device *netdev)
445{
446 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
447 struct dpsw_link_state state;
448 int err;
449
450 err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0,
451 port_priv->ethsw_data->dpsw_handle,
452 port_priv->idx, &state);
453 if (err) {
454 netdev_err(netdev, "dpsw_if_get_link_state() err %d\n", err);
455 return err;
456 }
457
458 WARN_ONCE(state.up > 1, "Garbage read into link_state");
459
460 if (state.up != port_priv->link_state) {
461 if (state.up)
462 netif_carrier_on(netdev);
463 else
464 netif_carrier_off(netdev);
465 port_priv->link_state = state.up;
466 }
467 return 0;
468}
469
470static int port_open(struct net_device *netdev)
471{
472 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
473 int err;
474
475
476 netif_tx_stop_all_queues(netdev);
477
478 err = dpsw_if_enable(port_priv->ethsw_data->mc_io, 0,
479 port_priv->ethsw_data->dpsw_handle,
480 port_priv->idx);
481 if (err) {
482 netdev_err(netdev, "dpsw_if_enable err %d\n", err);
483 return err;
484 }
485
486
487 err = port_carrier_state_sync(netdev);
488 if (err) {
489 netdev_err(netdev,
490 "port_carrier_state_sync err %d\n", err);
491 goto err_carrier_sync;
492 }
493
494 return 0;
495
496err_carrier_sync:
497 dpsw_if_disable(port_priv->ethsw_data->mc_io, 0,
498 port_priv->ethsw_data->dpsw_handle,
499 port_priv->idx);
500 return err;
501}
502
503static int port_stop(struct net_device *netdev)
504{
505 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
506 int err;
507
508 err = dpsw_if_disable(port_priv->ethsw_data->mc_io, 0,
509 port_priv->ethsw_data->dpsw_handle,
510 port_priv->idx);
511 if (err) {
512 netdev_err(netdev, "dpsw_if_disable err %d\n", err);
513 return err;
514 }
515
516 return 0;
517}
518
519static netdev_tx_t port_dropframe(struct sk_buff *skb,
520 struct net_device *netdev)
521{
522
523 dev_kfree_skb_any(skb);
524
525 return NETDEV_TX_OK;
526}
527
528static int swdev_get_port_parent_id(struct net_device *dev,
529 struct netdev_phys_item_id *ppid)
530{
531 struct ethsw_port_priv *port_priv = netdev_priv(dev);
532
533 ppid->id_len = 1;
534 ppid->id[0] = port_priv->ethsw_data->dev_id;
535
536 return 0;
537}
538
539static int port_get_phys_name(struct net_device *netdev, char *name,
540 size_t len)
541{
542 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
543 int err;
544
545 err = snprintf(name, len, "p%d", port_priv->idx);
546 if (err >= len)
547 return -EINVAL;
548
549 return 0;
550}
551
552struct ethsw_dump_ctx {
553 struct net_device *dev;
554 struct sk_buff *skb;
555 struct netlink_callback *cb;
556 int idx;
557};
558
559static int ethsw_fdb_do_dump(struct fdb_dump_entry *entry,
560 struct ethsw_dump_ctx *dump)
561{
562 int is_dynamic = entry->type & DPSW_FDB_ENTRY_DINAMIC;
563 u32 portid = NETLINK_CB(dump->cb->skb).portid;
564 u32 seq = dump->cb->nlh->nlmsg_seq;
565 struct nlmsghdr *nlh;
566 struct ndmsg *ndm;
567
568 if (dump->idx < dump->cb->args[2])
569 goto skip;
570
571 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
572 sizeof(*ndm), NLM_F_MULTI);
573 if (!nlh)
574 return -EMSGSIZE;
575
576 ndm = nlmsg_data(nlh);
577 ndm->ndm_family = AF_BRIDGE;
578 ndm->ndm_pad1 = 0;
579 ndm->ndm_pad2 = 0;
580 ndm->ndm_flags = NTF_SELF;
581 ndm->ndm_type = 0;
582 ndm->ndm_ifindex = dump->dev->ifindex;
583 ndm->ndm_state = is_dynamic ? NUD_REACHABLE : NUD_NOARP;
584
585 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, entry->mac_addr))
586 goto nla_put_failure;
587
588 nlmsg_end(dump->skb, nlh);
589
590skip:
591 dump->idx++;
592 return 0;
593
594nla_put_failure:
595 nlmsg_cancel(dump->skb, nlh);
596 return -EMSGSIZE;
597}
598
599static int port_fdb_valid_entry(struct fdb_dump_entry *entry,
600 struct ethsw_port_priv *port_priv)
601{
602 int idx = port_priv->idx;
603 int valid;
604
605 if (entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST)
606 valid = entry->if_info == port_priv->idx;
607 else
608 valid = entry->if_mask[idx / 8] & BIT(idx % 8);
609
610 return valid;
611}
612
613static int port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
614 struct net_device *net_dev,
615 struct net_device *filter_dev, int *idx)
616{
617 struct ethsw_port_priv *port_priv = netdev_priv(net_dev);
618 struct ethsw_core *ethsw = port_priv->ethsw_data;
619 struct device *dev = net_dev->dev.parent;
620 struct fdb_dump_entry *fdb_entries;
621 struct fdb_dump_entry fdb_entry;
622 struct ethsw_dump_ctx dump = {
623 .dev = net_dev,
624 .skb = skb,
625 .cb = cb,
626 .idx = *idx,
627 };
628 dma_addr_t fdb_dump_iova;
629 u16 num_fdb_entries;
630 u32 fdb_dump_size;
631 int err = 0, i;
632 u8 *dma_mem;
633
634 fdb_dump_size = ethsw->sw_attr.max_fdb_entries * sizeof(fdb_entry);
635 dma_mem = kzalloc(fdb_dump_size, GFP_KERNEL);
636 if (!dma_mem)
637 return -ENOMEM;
638
639 fdb_dump_iova = dma_map_single(dev, dma_mem, fdb_dump_size,
640 DMA_FROM_DEVICE);
641 if (dma_mapping_error(dev, fdb_dump_iova)) {
642 netdev_err(net_dev, "dma_map_single() failed\n");
643 err = -ENOMEM;
644 goto err_map;
645 }
646
647 err = dpsw_fdb_dump(ethsw->mc_io, 0, ethsw->dpsw_handle, 0,
648 fdb_dump_iova, fdb_dump_size, &num_fdb_entries);
649 if (err) {
650 netdev_err(net_dev, "dpsw_fdb_dump() = %d\n", err);
651 goto err_dump;
652 }
653
654 dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_FROM_DEVICE);
655
656 fdb_entries = (struct fdb_dump_entry *)dma_mem;
657 for (i = 0; i < num_fdb_entries; i++) {
658 fdb_entry = fdb_entries[i];
659
660 if (!port_fdb_valid_entry(&fdb_entry, port_priv))
661 continue;
662
663 err = ethsw_fdb_do_dump(&fdb_entry, &dump);
664 if (err)
665 goto end;
666 }
667
668end:
669 *idx = dump.idx;
670
671 kfree(dma_mem);
672
673 return 0;
674
675err_dump:
676 dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_TO_DEVICE);
677err_map:
678 kfree(dma_mem);
679 return err;
680}
681
682static const struct net_device_ops ethsw_port_ops = {
683 .ndo_open = port_open,
684 .ndo_stop = port_stop,
685
686 .ndo_set_mac_address = eth_mac_addr,
687 .ndo_get_stats64 = port_get_stats,
688 .ndo_change_mtu = port_change_mtu,
689 .ndo_has_offload_stats = port_has_offload_stats,
690 .ndo_get_offload_stats = port_get_offload_stats,
691 .ndo_fdb_add = port_fdb_add,
692 .ndo_fdb_del = port_fdb_del,
693 .ndo_fdb_dump = port_fdb_dump,
694
695 .ndo_start_xmit = port_dropframe,
696 .ndo_get_port_parent_id = swdev_get_port_parent_id,
697 .ndo_get_phys_port_name = port_get_phys_name,
698};
699
700static void ethsw_links_state_update(struct ethsw_core *ethsw)
701{
702 int i;
703
704 for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
705 port_carrier_state_sync(ethsw->ports[i]->netdev);
706}
707
708static irqreturn_t ethsw_irq0_handler_thread(int irq_num, void *arg)
709{
710 struct device *dev = (struct device *)arg;
711 struct ethsw_core *ethsw = dev_get_drvdata(dev);
712
713
714 u32 status = DPSW_IRQ_EVENT_LINK_CHANGED | 0xFFFF0000;
715 int err;
716
717 err = dpsw_get_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle,
718 DPSW_IRQ_INDEX_IF, &status);
719 if (err) {
720 dev_err(dev, "Can't get irq status (err %d)\n", err);
721
722 err = dpsw_clear_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle,
723 DPSW_IRQ_INDEX_IF, 0xFFFFFFFF);
724 if (err)
725 dev_err(dev, "Can't clear irq status (err %d)\n", err);
726 goto out;
727 }
728
729 if (status & DPSW_IRQ_EVENT_LINK_CHANGED)
730 ethsw_links_state_update(ethsw);
731
732out:
733 return IRQ_HANDLED;
734}
735
736static int ethsw_setup_irqs(struct fsl_mc_device *sw_dev)
737{
738 struct device *dev = &sw_dev->dev;
739 struct ethsw_core *ethsw = dev_get_drvdata(dev);
740 u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED;
741 struct fsl_mc_device_irq *irq;
742 int err;
743
744 err = fsl_mc_allocate_irqs(sw_dev);
745 if (err) {
746 dev_err(dev, "MC irqs allocation failed\n");
747 return err;
748 }
749
750 if (WARN_ON(sw_dev->obj_desc.irq_count != DPSW_IRQ_NUM)) {
751 err = -EINVAL;
752 goto free_irq;
753 }
754
755 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle,
756 DPSW_IRQ_INDEX_IF, 0);
757 if (err) {
758 dev_err(dev, "dpsw_set_irq_enable err %d\n", err);
759 goto free_irq;
760 }
761
762 irq = sw_dev->irqs[DPSW_IRQ_INDEX_IF];
763
764 err = devm_request_threaded_irq(dev, irq->msi_desc->irq,
765 NULL,
766 ethsw_irq0_handler_thread,
767 IRQF_NO_SUSPEND | IRQF_ONESHOT,
768 dev_name(dev), dev);
769 if (err) {
770 dev_err(dev, "devm_request_threaded_irq(): %d\n", err);
771 goto free_irq;
772 }
773
774 err = dpsw_set_irq_mask(ethsw->mc_io, 0, ethsw->dpsw_handle,
775 DPSW_IRQ_INDEX_IF, mask);
776 if (err) {
777 dev_err(dev, "dpsw_set_irq_mask(): %d\n", err);
778 goto free_devm_irq;
779 }
780
781 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle,
782 DPSW_IRQ_INDEX_IF, 1);
783 if (err) {
784 dev_err(dev, "dpsw_set_irq_enable(): %d\n", err);
785 goto free_devm_irq;
786 }
787
788 return 0;
789
790free_devm_irq:
791 devm_free_irq(dev, irq->msi_desc->irq, dev);
792free_irq:
793 fsl_mc_free_irqs(sw_dev);
794 return err;
795}
796
797static void ethsw_teardown_irqs(struct fsl_mc_device *sw_dev)
798{
799 struct device *dev = &sw_dev->dev;
800 struct ethsw_core *ethsw = dev_get_drvdata(dev);
801 int err;
802
803 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle,
804 DPSW_IRQ_INDEX_IF, 0);
805 if (err)
806 dev_err(dev, "dpsw_set_irq_enable err %d\n", err);
807
808 fsl_mc_free_irqs(sw_dev);
809}
810
811static int port_attr_stp_state_set(struct net_device *netdev,
812 struct switchdev_trans *trans,
813 u8 state)
814{
815 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
816
817 if (switchdev_trans_ph_prepare(trans))
818 return 0;
819
820 return ethsw_port_set_stp_state(port_priv, state);
821}
822
823static int port_attr_br_flags_pre_set(struct net_device *netdev,
824 struct switchdev_trans *trans,
825 unsigned long flags)
826{
827 if (flags & ~(BR_LEARNING | BR_FLOOD))
828 return -EINVAL;
829
830 return 0;
831}
832
833static int port_attr_br_flags_set(struct net_device *netdev,
834 struct switchdev_trans *trans,
835 unsigned long flags)
836{
837 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
838 int err = 0;
839
840 if (switchdev_trans_ph_prepare(trans))
841 return 0;
842
843
844 err = ethsw_set_learning(port_priv->ethsw_data,
845 !!(flags & BR_LEARNING));
846 if (err)
847 goto exit;
848
849 err = ethsw_port_set_flood(port_priv, !!(flags & BR_FLOOD));
850
851exit:
852 return err;
853}
854
855static int swdev_port_attr_set(struct net_device *netdev,
856 const struct switchdev_attr *attr,
857 struct switchdev_trans *trans)
858{
859 int err = 0;
860
861 switch (attr->id) {
862 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
863 err = port_attr_stp_state_set(netdev, trans,
864 attr->u.stp_state);
865 break;
866 case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
867 err = port_attr_br_flags_pre_set(netdev, trans,
868 attr->u.brport_flags);
869 break;
870 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
871 err = port_attr_br_flags_set(netdev, trans,
872 attr->u.brport_flags);
873 break;
874 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
875
876 break;
877 default:
878 err = -EOPNOTSUPP;
879 break;
880 }
881
882 return err;
883}
884
885static int port_vlans_add(struct net_device *netdev,
886 const struct switchdev_obj_port_vlan *vlan,
887 struct switchdev_trans *trans)
888{
889 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
890 int vid, err = 0;
891
892 if (switchdev_trans_ph_prepare(trans))
893 return 0;
894
895 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
896 if (!port_priv->ethsw_data->vlans[vid]) {
897
898 err = ethsw_add_vlan(port_priv->ethsw_data, vid);
899 if (err)
900 return err;
901
902 port_priv->ethsw_data->vlans[vid] |= ETHSW_VLAN_GLOBAL;
903 }
904 err = ethsw_port_add_vlan(port_priv, vid, vlan->flags);
905 if (err)
906 break;
907 }
908
909 return err;
910}
911
912static int port_lookup_address(struct net_device *netdev, int is_uc,
913 const unsigned char *addr)
914{
915 struct netdev_hw_addr_list *list = (is_uc) ? &netdev->uc : &netdev->mc;
916 struct netdev_hw_addr *ha;
917
918 netif_addr_lock_bh(netdev);
919 list_for_each_entry(ha, &list->list, list) {
920 if (ether_addr_equal(ha->addr, addr)) {
921 netif_addr_unlock_bh(netdev);
922 return 1;
923 }
924 }
925 netif_addr_unlock_bh(netdev);
926 return 0;
927}
928
929static int port_mdb_add(struct net_device *netdev,
930 const struct switchdev_obj_port_mdb *mdb,
931 struct switchdev_trans *trans)
932{
933 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
934 int err;
935
936 if (switchdev_trans_ph_prepare(trans))
937 return 0;
938
939
940 if (port_lookup_address(netdev, 0, mdb->addr))
941 return -EEXIST;
942
943 err = ethsw_port_fdb_add_mc(port_priv, mdb->addr);
944 if (err)
945 return err;
946
947 err = dev_mc_add(netdev, mdb->addr);
948 if (err) {
949 netdev_err(netdev, "dev_mc_add err %d\n", err);
950 ethsw_port_fdb_del_mc(port_priv, mdb->addr);
951 }
952
953 return err;
954}
955
956static int swdev_port_obj_add(struct net_device *netdev,
957 const struct switchdev_obj *obj,
958 struct switchdev_trans *trans)
959{
960 int err;
961
962 switch (obj->id) {
963 case SWITCHDEV_OBJ_ID_PORT_VLAN:
964 err = port_vlans_add(netdev,
965 SWITCHDEV_OBJ_PORT_VLAN(obj),
966 trans);
967 break;
968 case SWITCHDEV_OBJ_ID_PORT_MDB:
969 err = port_mdb_add(netdev,
970 SWITCHDEV_OBJ_PORT_MDB(obj),
971 trans);
972 break;
973 default:
974 err = -EOPNOTSUPP;
975 break;
976 }
977
978 return err;
979}
980
981static int ethsw_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid)
982{
983 struct ethsw_core *ethsw = port_priv->ethsw_data;
984 struct net_device *netdev = port_priv->netdev;
985 struct dpsw_vlan_if_cfg vcfg;
986 int i, err;
987
988 if (!port_priv->vlans[vid])
989 return -ENOENT;
990
991 if (port_priv->vlans[vid] & ETHSW_VLAN_PVID) {
992 err = ethsw_port_set_pvid(port_priv, 0);
993 if (err)
994 return err;
995 }
996
997 vcfg.num_ifs = 1;
998 vcfg.if_id[0] = port_priv->idx;
999 if (port_priv->vlans[vid] & ETHSW_VLAN_UNTAGGED) {
1000 err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0,
1001 ethsw->dpsw_handle,
1002 vid, &vcfg);
1003 if (err) {
1004 netdev_err(netdev,
1005 "dpsw_vlan_remove_if_untagged err %d\n",
1006 err);
1007 }
1008 port_priv->vlans[vid] &= ~ETHSW_VLAN_UNTAGGED;
1009 }
1010
1011 if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) {
1012 err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
1013 vid, &vcfg);
1014 if (err) {
1015 netdev_err(netdev,
1016 "dpsw_vlan_remove_if err %d\n", err);
1017 return err;
1018 }
1019 port_priv->vlans[vid] &= ~ETHSW_VLAN_MEMBER;
1020
1021
1022
1023
1024 for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
1025 if (ethsw->ports[i]->vlans[vid] & ETHSW_VLAN_MEMBER)
1026 return 0;
1027
1028 ethsw->vlans[vid] &= ~ETHSW_VLAN_GLOBAL;
1029
1030 err = ethsw_dellink_switch(ethsw, vid);
1031 if (err)
1032 return err;
1033 }
1034
1035 return 0;
1036}
1037
1038static int port_vlans_del(struct net_device *netdev,
1039 const struct switchdev_obj_port_vlan *vlan)
1040{
1041 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
1042 int vid, err = 0;
1043
1044 if (netif_is_bridge_master(vlan->obj.orig_dev))
1045 return -EOPNOTSUPP;
1046
1047 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
1048 err = ethsw_port_del_vlan(port_priv, vid);
1049 if (err)
1050 break;
1051 }
1052
1053 return err;
1054}
1055
1056static int port_mdb_del(struct net_device *netdev,
1057 const struct switchdev_obj_port_mdb *mdb)
1058{
1059 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
1060 int err;
1061
1062 if (!port_lookup_address(netdev, 0, mdb->addr))
1063 return -ENOENT;
1064
1065 err = ethsw_port_fdb_del_mc(port_priv, mdb->addr);
1066 if (err)
1067 return err;
1068
1069 err = dev_mc_del(netdev, mdb->addr);
1070 if (err) {
1071 netdev_err(netdev, "dev_mc_del err %d\n", err);
1072 return err;
1073 }
1074
1075 return err;
1076}
1077
1078static int swdev_port_obj_del(struct net_device *netdev,
1079 const struct switchdev_obj *obj)
1080{
1081 int err;
1082
1083 switch (obj->id) {
1084 case SWITCHDEV_OBJ_ID_PORT_VLAN:
1085 err = port_vlans_del(netdev, SWITCHDEV_OBJ_PORT_VLAN(obj));
1086 break;
1087 case SWITCHDEV_OBJ_ID_PORT_MDB:
1088 err = port_mdb_del(netdev, SWITCHDEV_OBJ_PORT_MDB(obj));
1089 break;
1090 default:
1091 err = -EOPNOTSUPP;
1092 break;
1093 }
1094 return err;
1095}
1096
1097static int
1098ethsw_switchdev_port_attr_set_event(struct net_device *netdev,
1099 struct switchdev_notifier_port_attr_info *port_attr_info)
1100{
1101 int err;
1102
1103 err = swdev_port_attr_set(netdev, port_attr_info->attr,
1104 port_attr_info->trans);
1105
1106 port_attr_info->handled = true;
1107 return notifier_from_errno(err);
1108}
1109
1110
1111static int port_bridge_join(struct net_device *netdev,
1112 struct net_device *upper_dev)
1113{
1114 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
1115 struct ethsw_core *ethsw = port_priv->ethsw_data;
1116 int i, err;
1117
1118 for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
1119 if (ethsw->ports[i]->bridge_dev &&
1120 (ethsw->ports[i]->bridge_dev != upper_dev)) {
1121 netdev_err(netdev,
1122 "Only one bridge supported per DPSW object!\n");
1123 return -EINVAL;
1124 }
1125
1126
1127 err = ethsw_port_set_flood(port_priv, 1);
1128 if (!err)
1129 port_priv->bridge_dev = upper_dev;
1130
1131 return err;
1132}
1133
1134static int port_bridge_leave(struct net_device *netdev)
1135{
1136 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
1137 int err;
1138
1139
1140 err = ethsw_port_set_flood(port_priv, 0);
1141 if (!err)
1142 port_priv->bridge_dev = NULL;
1143
1144 return err;
1145}
1146
1147static bool ethsw_port_dev_check(const struct net_device *netdev)
1148{
1149 return netdev->netdev_ops == ðsw_port_ops;
1150}
1151
1152static int port_netdevice_event(struct notifier_block *unused,
1153 unsigned long event, void *ptr)
1154{
1155 struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
1156 struct netdev_notifier_changeupper_info *info = ptr;
1157 struct net_device *upper_dev;
1158 int err = 0;
1159
1160 if (!ethsw_port_dev_check(netdev))
1161 return NOTIFY_DONE;
1162
1163
1164 if (event == NETDEV_CHANGEUPPER) {
1165 upper_dev = info->upper_dev;
1166 if (netif_is_bridge_master(upper_dev)) {
1167 if (info->linking)
1168 err = port_bridge_join(netdev, upper_dev);
1169 else
1170 err = port_bridge_leave(netdev);
1171 }
1172 }
1173
1174 return notifier_from_errno(err);
1175}
1176
1177static struct notifier_block port_nb __read_mostly = {
1178 .notifier_call = port_netdevice_event,
1179};
1180
1181struct ethsw_switchdev_event_work {
1182 struct work_struct work;
1183 struct switchdev_notifier_fdb_info fdb_info;
1184 struct net_device *dev;
1185 unsigned long event;
1186};
1187
1188static void ethsw_switchdev_event_work(struct work_struct *work)
1189{
1190 struct ethsw_switchdev_event_work *switchdev_work =
1191 container_of(work, struct ethsw_switchdev_event_work, work);
1192 struct net_device *dev = switchdev_work->dev;
1193 struct switchdev_notifier_fdb_info *fdb_info;
1194 int err;
1195
1196 rtnl_lock();
1197 fdb_info = &switchdev_work->fdb_info;
1198
1199 switch (switchdev_work->event) {
1200 case SWITCHDEV_FDB_ADD_TO_DEVICE:
1201 if (!fdb_info->added_by_user)
1202 break;
1203 if (is_unicast_ether_addr(fdb_info->addr))
1204 err = ethsw_port_fdb_add_uc(netdev_priv(dev),
1205 fdb_info->addr);
1206 else
1207 err = ethsw_port_fdb_add_mc(netdev_priv(dev),
1208 fdb_info->addr);
1209 if (err)
1210 break;
1211 fdb_info->offloaded = true;
1212 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev,
1213 &fdb_info->info, NULL);
1214 break;
1215 case SWITCHDEV_FDB_DEL_TO_DEVICE:
1216 if (!fdb_info->added_by_user)
1217 break;
1218 if (is_unicast_ether_addr(fdb_info->addr))
1219 ethsw_port_fdb_del_uc(netdev_priv(dev), fdb_info->addr);
1220 else
1221 ethsw_port_fdb_del_mc(netdev_priv(dev), fdb_info->addr);
1222 break;
1223 }
1224
1225 rtnl_unlock();
1226 kfree(switchdev_work->fdb_info.addr);
1227 kfree(switchdev_work);
1228 dev_put(dev);
1229}
1230
1231
1232static int port_switchdev_event(struct notifier_block *unused,
1233 unsigned long event, void *ptr)
1234{
1235 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
1236 struct ethsw_switchdev_event_work *switchdev_work;
1237 struct switchdev_notifier_fdb_info *fdb_info = ptr;
1238
1239 if (!ethsw_port_dev_check(dev))
1240 return NOTIFY_DONE;
1241
1242 if (event == SWITCHDEV_PORT_ATTR_SET)
1243 return ethsw_switchdev_port_attr_set_event(dev, ptr);
1244
1245 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
1246 if (!switchdev_work)
1247 return NOTIFY_BAD;
1248
1249 INIT_WORK(&switchdev_work->work, ethsw_switchdev_event_work);
1250 switchdev_work->dev = dev;
1251 switchdev_work->event = event;
1252
1253 switch (event) {
1254 case SWITCHDEV_FDB_ADD_TO_DEVICE:
1255 case SWITCHDEV_FDB_DEL_TO_DEVICE:
1256 memcpy(&switchdev_work->fdb_info, ptr,
1257 sizeof(switchdev_work->fdb_info));
1258 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
1259 if (!switchdev_work->fdb_info.addr)
1260 goto err_addr_alloc;
1261
1262 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
1263 fdb_info->addr);
1264
1265
1266 dev_hold(dev);
1267 break;
1268 default:
1269 kfree(switchdev_work);
1270 return NOTIFY_DONE;
1271 }
1272
1273 queue_work(ethsw_owq, &switchdev_work->work);
1274
1275 return NOTIFY_DONE;
1276
1277err_addr_alloc:
1278 kfree(switchdev_work);
1279 return NOTIFY_BAD;
1280}
1281
1282static int
1283ethsw_switchdev_port_obj_event(unsigned long event, struct net_device *netdev,
1284 struct switchdev_notifier_port_obj_info *port_obj_info)
1285{
1286 int err = -EOPNOTSUPP;
1287
1288 switch (event) {
1289 case SWITCHDEV_PORT_OBJ_ADD:
1290 err = swdev_port_obj_add(netdev, port_obj_info->obj,
1291 port_obj_info->trans);
1292 break;
1293 case SWITCHDEV_PORT_OBJ_DEL:
1294 err = swdev_port_obj_del(netdev, port_obj_info->obj);
1295 break;
1296 }
1297
1298 port_obj_info->handled = true;
1299 return notifier_from_errno(err);
1300}
1301
1302static int port_switchdev_blocking_event(struct notifier_block *unused,
1303 unsigned long event, void *ptr)
1304{
1305 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
1306
1307 if (!ethsw_port_dev_check(dev))
1308 return NOTIFY_DONE;
1309
1310 switch (event) {
1311 case SWITCHDEV_PORT_OBJ_ADD:
1312 case SWITCHDEV_PORT_OBJ_DEL:
1313 return ethsw_switchdev_port_obj_event(event, dev, ptr);
1314 case SWITCHDEV_PORT_ATTR_SET:
1315 return ethsw_switchdev_port_attr_set_event(dev, ptr);
1316 }
1317
1318 return NOTIFY_DONE;
1319}
1320
1321static struct notifier_block port_switchdev_nb = {
1322 .notifier_call = port_switchdev_event,
1323};
1324
1325static struct notifier_block port_switchdev_blocking_nb = {
1326 .notifier_call = port_switchdev_blocking_event,
1327};
1328
1329static int ethsw_register_notifier(struct device *dev)
1330{
1331 int err;
1332
1333 err = register_netdevice_notifier(&port_nb);
1334 if (err) {
1335 dev_err(dev, "Failed to register netdev notifier\n");
1336 return err;
1337 }
1338
1339 err = register_switchdev_notifier(&port_switchdev_nb);
1340 if (err) {
1341 dev_err(dev, "Failed to register switchdev notifier\n");
1342 goto err_switchdev_nb;
1343 }
1344
1345 err = register_switchdev_blocking_notifier(&port_switchdev_blocking_nb);
1346 if (err) {
1347 dev_err(dev, "Failed to register switchdev blocking notifier\n");
1348 goto err_switchdev_blocking_nb;
1349 }
1350
1351 return 0;
1352
1353err_switchdev_blocking_nb:
1354 unregister_switchdev_notifier(&port_switchdev_nb);
1355err_switchdev_nb:
1356 unregister_netdevice_notifier(&port_nb);
1357 return err;
1358}
1359
1360static int ethsw_init(struct fsl_mc_device *sw_dev)
1361{
1362 struct device *dev = &sw_dev->dev;
1363 struct ethsw_core *ethsw = dev_get_drvdata(dev);
1364 u16 version_major, version_minor, i;
1365 struct dpsw_stp_cfg stp_cfg;
1366 int err;
1367
1368 ethsw->dev_id = sw_dev->obj_desc.id;
1369
1370 err = dpsw_open(ethsw->mc_io, 0, ethsw->dev_id, ðsw->dpsw_handle);
1371 if (err) {
1372 dev_err(dev, "dpsw_open err %d\n", err);
1373 return err;
1374 }
1375
1376 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle,
1377 ðsw->sw_attr);
1378 if (err) {
1379 dev_err(dev, "dpsw_get_attributes err %d\n", err);
1380 goto err_close;
1381 }
1382
1383 err = dpsw_get_api_version(ethsw->mc_io, 0,
1384 &version_major,
1385 &version_minor);
1386 if (err) {
1387 dev_err(dev, "dpsw_get_api_version err %d\n", err);
1388 goto err_close;
1389 }
1390
1391
1392 if (version_major < DPSW_MIN_VER_MAJOR ||
1393 (version_major == DPSW_MIN_VER_MAJOR &&
1394 version_minor < DPSW_MIN_VER_MINOR)) {
1395 dev_err(dev, "DPSW version %d:%d not supported. Use %d.%d or greater.\n",
1396 version_major,
1397 version_minor,
1398 DPSW_MIN_VER_MAJOR, DPSW_MIN_VER_MINOR);
1399 err = -ENOTSUPP;
1400 goto err_close;
1401 }
1402
1403 err = dpsw_reset(ethsw->mc_io, 0, ethsw->dpsw_handle);
1404 if (err) {
1405 dev_err(dev, "dpsw_reset err %d\n", err);
1406 goto err_close;
1407 }
1408
1409 err = dpsw_fdb_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 0,
1410 DPSW_FDB_LEARNING_MODE_HW);
1411 if (err) {
1412 dev_err(dev, "dpsw_fdb_set_learning_mode err %d\n", err);
1413 goto err_close;
1414 }
1415
1416 stp_cfg.vlan_id = DEFAULT_VLAN_ID;
1417 stp_cfg.state = DPSW_STP_STATE_FORWARDING;
1418
1419 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
1420 err = dpsw_if_set_stp(ethsw->mc_io, 0, ethsw->dpsw_handle, i,
1421 &stp_cfg);
1422 if (err) {
1423 dev_err(dev, "dpsw_if_set_stp err %d for port %d\n",
1424 err, i);
1425 goto err_close;
1426 }
1427
1428 err = dpsw_if_set_broadcast(ethsw->mc_io, 0,
1429 ethsw->dpsw_handle, i, 1);
1430 if (err) {
1431 dev_err(dev,
1432 "dpsw_if_set_broadcast err %d for port %d\n",
1433 err, i);
1434 goto err_close;
1435 }
1436 }
1437
1438 ethsw_owq = alloc_ordered_workqueue("%s_ordered", WQ_MEM_RECLAIM,
1439 "ethsw");
1440 if (!ethsw_owq) {
1441 err = -ENOMEM;
1442 goto err_close;
1443 }
1444
1445 err = ethsw_register_notifier(dev);
1446 if (err)
1447 goto err_destroy_ordered_workqueue;
1448
1449 return 0;
1450
1451err_destroy_ordered_workqueue:
1452 destroy_workqueue(ethsw_owq);
1453
1454err_close:
1455 dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle);
1456 return err;
1457}
1458
1459static int ethsw_port_init(struct ethsw_port_priv *port_priv, u16 port)
1460{
1461 struct net_device *netdev = port_priv->netdev;
1462 struct ethsw_core *ethsw = port_priv->ethsw_data;
1463 struct dpsw_vlan_if_cfg vcfg;
1464 int err;
1465
1466
1467
1468
1469 vcfg.num_ifs = 1;
1470 vcfg.if_id[0] = port_priv->idx;
1471
1472 err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, ethsw->dpsw_handle,
1473 DEFAULT_VLAN_ID, &vcfg);
1474 if (err) {
1475 netdev_err(netdev, "dpsw_vlan_remove_if_untagged err %d\n",
1476 err);
1477 return err;
1478 }
1479
1480 err = ethsw_port_set_pvid(port_priv, 0);
1481 if (err)
1482 return err;
1483
1484 err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
1485 DEFAULT_VLAN_ID, &vcfg);
1486 if (err)
1487 netdev_err(netdev, "dpsw_vlan_remove_if err %d\n", err);
1488
1489 return err;
1490}
1491
1492static void ethsw_unregister_notifier(struct device *dev)
1493{
1494 struct notifier_block *nb;
1495 int err;
1496
1497 nb = &port_switchdev_blocking_nb;
1498 err = unregister_switchdev_blocking_notifier(nb);
1499 if (err)
1500 dev_err(dev,
1501 "Failed to unregister switchdev blocking notifier (%d)\n", err);
1502
1503 err = unregister_switchdev_notifier(&port_switchdev_nb);
1504 if (err)
1505 dev_err(dev,
1506 "Failed to unregister switchdev notifier (%d)\n", err);
1507
1508 err = unregister_netdevice_notifier(&port_nb);
1509 if (err)
1510 dev_err(dev,
1511 "Failed to unregister netdev notifier (%d)\n", err);
1512}
1513
1514static void ethsw_takedown(struct fsl_mc_device *sw_dev)
1515{
1516 struct device *dev = &sw_dev->dev;
1517 struct ethsw_core *ethsw = dev_get_drvdata(dev);
1518 int err;
1519
1520 ethsw_unregister_notifier(dev);
1521
1522 err = dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle);
1523 if (err)
1524 dev_warn(dev, "dpsw_close err %d\n", err);
1525}
1526
1527static int ethsw_remove(struct fsl_mc_device *sw_dev)
1528{
1529 struct ethsw_port_priv *port_priv;
1530 struct ethsw_core *ethsw;
1531 struct device *dev;
1532 int i;
1533
1534 dev = &sw_dev->dev;
1535 ethsw = dev_get_drvdata(dev);
1536
1537 ethsw_teardown_irqs(sw_dev);
1538
1539 destroy_workqueue(ethsw_owq);
1540
1541 dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
1542
1543 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
1544 port_priv = ethsw->ports[i];
1545 unregister_netdev(port_priv->netdev);
1546 free_netdev(port_priv->netdev);
1547 }
1548 kfree(ethsw->ports);
1549
1550 ethsw_takedown(sw_dev);
1551 fsl_mc_portal_free(ethsw->mc_io);
1552
1553 kfree(ethsw);
1554
1555 dev_set_drvdata(dev, NULL);
1556
1557 return 0;
1558}
1559
1560static int ethsw_probe_port(struct ethsw_core *ethsw, u16 port_idx)
1561{
1562 struct ethsw_port_priv *port_priv;
1563 struct device *dev = ethsw->dev;
1564 struct net_device *port_netdev;
1565 int err;
1566
1567 port_netdev = alloc_etherdev(sizeof(struct ethsw_port_priv));
1568 if (!port_netdev) {
1569 dev_err(dev, "alloc_etherdev error\n");
1570 return -ENOMEM;
1571 }
1572
1573 port_priv = netdev_priv(port_netdev);
1574 port_priv->netdev = port_netdev;
1575 port_priv->ethsw_data = ethsw;
1576
1577 port_priv->idx = port_idx;
1578 port_priv->stp_state = BR_STATE_FORWARDING;
1579
1580
1581 port_priv->flood = true;
1582
1583 SET_NETDEV_DEV(port_netdev, dev);
1584 port_netdev->netdev_ops = ðsw_port_ops;
1585 port_netdev->ethtool_ops = ðsw_port_ethtool_ops;
1586
1587
1588 port_netdev->min_mtu = ETH_MIN_MTU;
1589 port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH;
1590
1591 err = ethsw_port_init(port_priv, port_idx);
1592 if (err)
1593 goto err_port_probe;
1594
1595 err = register_netdev(port_netdev);
1596 if (err < 0) {
1597 dev_err(dev, "register_netdev error %d\n", err);
1598 goto err_port_probe;
1599 }
1600
1601 ethsw->ports[port_idx] = port_priv;
1602
1603 return 0;
1604
1605err_port_probe:
1606 free_netdev(port_netdev);
1607
1608 return err;
1609}
1610
1611static int ethsw_probe(struct fsl_mc_device *sw_dev)
1612{
1613 struct device *dev = &sw_dev->dev;
1614 struct ethsw_core *ethsw;
1615 int i, err;
1616
1617
1618 ethsw = kzalloc(sizeof(*ethsw), GFP_KERNEL);
1619
1620 if (!ethsw)
1621 return -ENOMEM;
1622
1623 ethsw->dev = dev;
1624 dev_set_drvdata(dev, ethsw);
1625
1626 err = fsl_mc_portal_allocate(sw_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
1627 ðsw->mc_io);
1628 if (err) {
1629 if (err == -ENXIO)
1630 err = -EPROBE_DEFER;
1631 else
1632 dev_err(dev, "fsl_mc_portal_allocate err %d\n", err);
1633 goto err_free_drvdata;
1634 }
1635
1636 err = ethsw_init(sw_dev);
1637 if (err)
1638 goto err_free_cmdport;
1639
1640
1641 ethsw->vlans[DEFAULT_VLAN_ID] = ETHSW_VLAN_MEMBER;
1642
1643
1644 ethsw->learning = true;
1645
1646 ethsw->ports = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->ports),
1647 GFP_KERNEL);
1648 if (!(ethsw->ports)) {
1649 err = -ENOMEM;
1650 goto err_takedown;
1651 }
1652
1653 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
1654 err = ethsw_probe_port(ethsw, i);
1655 if (err)
1656 goto err_free_ports;
1657 }
1658
1659 err = dpsw_enable(ethsw->mc_io, 0, ethsw->dpsw_handle);
1660 if (err) {
1661 dev_err(ethsw->dev, "dpsw_enable err %d\n", err);
1662 goto err_free_ports;
1663 }
1664
1665
1666 err = ethsw_setup_irqs(sw_dev);
1667 if (err)
1668 goto err_stop;
1669
1670 dev_info(dev, "probed %d port switch\n", ethsw->sw_attr.num_ifs);
1671 return 0;
1672
1673err_stop:
1674 dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
1675
1676err_free_ports:
1677
1678 for (i--; i >= 0; i--) {
1679 unregister_netdev(ethsw->ports[i]->netdev);
1680 free_netdev(ethsw->ports[i]->netdev);
1681 }
1682 kfree(ethsw->ports);
1683
1684err_takedown:
1685 ethsw_takedown(sw_dev);
1686
1687err_free_cmdport:
1688 fsl_mc_portal_free(ethsw->mc_io);
1689
1690err_free_drvdata:
1691 kfree(ethsw);
1692 dev_set_drvdata(dev, NULL);
1693
1694 return err;
1695}
1696
1697static const struct fsl_mc_device_id ethsw_match_id_table[] = {
1698 {
1699 .vendor = FSL_MC_VENDOR_FREESCALE,
1700 .obj_type = "dpsw",
1701 },
1702 { .vendor = 0x0 }
1703};
1704MODULE_DEVICE_TABLE(fslmc, ethsw_match_id_table);
1705
1706static struct fsl_mc_driver eth_sw_drv = {
1707 .driver = {
1708 .name = KBUILD_MODNAME,
1709 .owner = THIS_MODULE,
1710 },
1711 .probe = ethsw_probe,
1712 .remove = ethsw_remove,
1713 .match_id_table = ethsw_match_id_table
1714};
1715
1716module_fsl_mc_driver(eth_sw_drv);
1717
1718MODULE_LICENSE("GPL v2");
1719MODULE_DESCRIPTION("DPAA2 Ethernet Switch Driver");
1720
