1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
2 /*
3 * Microsemi Ocelot Switch driver
4 *
5 * Copyright (c) 2017 Microsemi Corporation
6 */
7 #include <linux/dsa/ocelot.h>
8 #include <linux/if_bridge.h>
9 #include <soc/mscc/ocelot_vcap.h>
10 #include "ocelot.h"
11 #include "ocelot_vcap.h"
12
13 #define TABLE_UPDATE_SLEEP_US 10
14 #define TABLE_UPDATE_TIMEOUT_US 100000
15 #define OCELOT_RSV_VLAN_RANGE_START 4000
16
17 struct ocelot_mact_entry {
18 u8 mac[ETH_ALEN];
19 u16 vid;
20 enum macaccess_entry_type type;
21 };
22
23 /* Caller must hold &ocelot->mact_lock */
ocelot_mact_read_macaccess(struct ocelot * ocelot)24 static inline u32 ocelot_mact_read_macaccess(struct ocelot *ocelot)
25 {
26 return ocelot_read(ocelot, ANA_TABLES_MACACCESS);
27 }
28
29 /* Caller must hold &ocelot->mact_lock */
ocelot_mact_wait_for_completion(struct ocelot * ocelot)30 static inline int ocelot_mact_wait_for_completion(struct ocelot *ocelot)
31 {
32 u32 val;
33
34 return readx_poll_timeout(ocelot_mact_read_macaccess,
35 ocelot, val,
36 (val & ANA_TABLES_MACACCESS_MAC_TABLE_CMD_M) ==
37 MACACCESS_CMD_IDLE,
38 TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US);
39 }
40
41 /* Caller must hold &ocelot->mact_lock */
ocelot_mact_select(struct ocelot * ocelot,const unsigned char mac[ETH_ALEN],unsigned int vid)42 static void ocelot_mact_select(struct ocelot *ocelot,
43 const unsigned char mac[ETH_ALEN],
44 unsigned int vid)
45 {
46 u32 macl = 0, mach = 0;
47
48 /* Set the MAC address to handle and the vlan associated in a format
49 * understood by the hardware.
50 */
51 mach |= vid << 16;
52 mach |= mac[0] << 8;
53 mach |= mac[1] << 0;
54 macl |= mac[2] << 24;
55 macl |= mac[3] << 16;
56 macl |= mac[4] << 8;
57 macl |= mac[5] << 0;
58
59 ocelot_write(ocelot, macl, ANA_TABLES_MACLDATA);
60 ocelot_write(ocelot, mach, ANA_TABLES_MACHDATA);
61
62 }
63
__ocelot_mact_learn(struct ocelot * ocelot,int port,const unsigned char mac[ETH_ALEN],unsigned int vid,enum macaccess_entry_type type)64 static int __ocelot_mact_learn(struct ocelot *ocelot, int port,
65 const unsigned char mac[ETH_ALEN],
66 unsigned int vid, enum macaccess_entry_type type)
67 {
68 u32 cmd = ANA_TABLES_MACACCESS_VALID |
69 ANA_TABLES_MACACCESS_DEST_IDX(port) |
70 ANA_TABLES_MACACCESS_ENTRYTYPE(type) |
71 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_LEARN);
72 unsigned int mc_ports;
73 int err;
74
75 /* Set MAC_CPU_COPY if the CPU port is used by a multicast entry */
76 if (type == ENTRYTYPE_MACv4)
77 mc_ports = (mac[1] << 8) | mac[2];
78 else if (type == ENTRYTYPE_MACv6)
79 mc_ports = (mac[0] << 8) | mac[1];
80 else
81 mc_ports = 0;
82
83 if (mc_ports & BIT(ocelot->num_phys_ports))
84 cmd |= ANA_TABLES_MACACCESS_MAC_CPU_COPY;
85
86 ocelot_mact_select(ocelot, mac, vid);
87
88 /* Issue a write command */
89 ocelot_write(ocelot, cmd, ANA_TABLES_MACACCESS);
90
91 err = ocelot_mact_wait_for_completion(ocelot);
92
93 return err;
94 }
95
ocelot_mact_learn(struct ocelot * ocelot,int port,const unsigned char mac[ETH_ALEN],unsigned int vid,enum macaccess_entry_type type)96 int ocelot_mact_learn(struct ocelot *ocelot, int port,
97 const unsigned char mac[ETH_ALEN],
98 unsigned int vid, enum macaccess_entry_type type)
99 {
100 int ret;
101
102 mutex_lock(&ocelot->mact_lock);
103 ret = __ocelot_mact_learn(ocelot, port, mac, vid, type);
104 mutex_unlock(&ocelot->mact_lock);
105
106 return ret;
107 }
108 EXPORT_SYMBOL(ocelot_mact_learn);
109
ocelot_mact_forget(struct ocelot * ocelot,const unsigned char mac[ETH_ALEN],unsigned int vid)110 int ocelot_mact_forget(struct ocelot *ocelot,
111 const unsigned char mac[ETH_ALEN], unsigned int vid)
112 {
113 int err;
114
115 mutex_lock(&ocelot->mact_lock);
116
117 ocelot_mact_select(ocelot, mac, vid);
118
119 /* Issue a forget command */
120 ocelot_write(ocelot,
121 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_FORGET),
122 ANA_TABLES_MACACCESS);
123
124 err = ocelot_mact_wait_for_completion(ocelot);
125
126 mutex_unlock(&ocelot->mact_lock);
127
128 return err;
129 }
130 EXPORT_SYMBOL(ocelot_mact_forget);
131
ocelot_mact_lookup(struct ocelot * ocelot,int * dst_idx,const unsigned char mac[ETH_ALEN],unsigned int vid,enum macaccess_entry_type * type)132 int ocelot_mact_lookup(struct ocelot *ocelot, int *dst_idx,
133 const unsigned char mac[ETH_ALEN],
134 unsigned int vid, enum macaccess_entry_type *type)
135 {
136 int val;
137
138 mutex_lock(&ocelot->mact_lock);
139
140 ocelot_mact_select(ocelot, mac, vid);
141
142 /* Issue a read command with MACACCESS_VALID=1. */
143 ocelot_write(ocelot, ANA_TABLES_MACACCESS_VALID |
144 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ),
145 ANA_TABLES_MACACCESS);
146
147 if (ocelot_mact_wait_for_completion(ocelot)) {
148 mutex_unlock(&ocelot->mact_lock);
149 return -ETIMEDOUT;
150 }
151
152 /* Read back the entry flags */
153 val = ocelot_read(ocelot, ANA_TABLES_MACACCESS);
154
155 mutex_unlock(&ocelot->mact_lock);
156
157 if (!(val & ANA_TABLES_MACACCESS_VALID))
158 return -ENOENT;
159
160 *dst_idx = ANA_TABLES_MACACCESS_DEST_IDX_X(val);
161 *type = ANA_TABLES_MACACCESS_ENTRYTYPE_X(val);
162
163 return 0;
164 }
165 EXPORT_SYMBOL(ocelot_mact_lookup);
166
ocelot_mact_learn_streamdata(struct ocelot * ocelot,int dst_idx,const unsigned char mac[ETH_ALEN],unsigned int vid,enum macaccess_entry_type type,int sfid,int ssid)167 int ocelot_mact_learn_streamdata(struct ocelot *ocelot, int dst_idx,
168 const unsigned char mac[ETH_ALEN],
169 unsigned int vid,
170 enum macaccess_entry_type type,
171 int sfid, int ssid)
172 {
173 int ret;
174
175 mutex_lock(&ocelot->mact_lock);
176
177 ocelot_write(ocelot,
178 (sfid < 0 ? 0 : ANA_TABLES_STREAMDATA_SFID_VALID) |
179 ANA_TABLES_STREAMDATA_SFID(sfid) |
180 (ssid < 0 ? 0 : ANA_TABLES_STREAMDATA_SSID_VALID) |
181 ANA_TABLES_STREAMDATA_SSID(ssid),
182 ANA_TABLES_STREAMDATA);
183
184 ret = __ocelot_mact_learn(ocelot, dst_idx, mac, vid, type);
185
186 mutex_unlock(&ocelot->mact_lock);
187
188 return ret;
189 }
190 EXPORT_SYMBOL(ocelot_mact_learn_streamdata);
191
ocelot_mact_init(struct ocelot * ocelot)192 static void ocelot_mact_init(struct ocelot *ocelot)
193 {
194 /* Configure the learning mode entries attributes:
195 * - Do not copy the frame to the CPU extraction queues.
196 * - Use the vlan and mac_cpoy for dmac lookup.
197 */
198 ocelot_rmw(ocelot, 0,
199 ANA_AGENCTRL_LEARN_CPU_COPY | ANA_AGENCTRL_IGNORE_DMAC_FLAGS
200 | ANA_AGENCTRL_LEARN_FWD_KILL
201 | ANA_AGENCTRL_LEARN_IGNORE_VLAN,
202 ANA_AGENCTRL);
203
204 /* Clear the MAC table. We are not concurrent with anyone, so
205 * holding &ocelot->mact_lock is pointless.
206 */
207 ocelot_write(ocelot, MACACCESS_CMD_INIT, ANA_TABLES_MACACCESS);
208 }
209
ocelot_vcap_enable(struct ocelot * ocelot,int port)210 static void ocelot_vcap_enable(struct ocelot *ocelot, int port)
211 {
212 ocelot_write_gix(ocelot, ANA_PORT_VCAP_S2_CFG_S2_ENA |
213 ANA_PORT_VCAP_S2_CFG_S2_IP6_CFG(0xa),
214 ANA_PORT_VCAP_S2_CFG, port);
215
216 ocelot_write_gix(ocelot, ANA_PORT_VCAP_CFG_S1_ENA,
217 ANA_PORT_VCAP_CFG, port);
218
219 ocelot_rmw_gix(ocelot, REW_PORT_CFG_ES0_EN,
220 REW_PORT_CFG_ES0_EN,
221 REW_PORT_CFG, port);
222 }
223
ocelot_single_vlan_aware_bridge(struct ocelot * ocelot,struct netlink_ext_ack * extack)224 static int ocelot_single_vlan_aware_bridge(struct ocelot *ocelot,
225 struct netlink_ext_ack *extack)
226 {
227 struct net_device *bridge = NULL;
228 int port;
229
230 for (port = 0; port < ocelot->num_phys_ports; port++) {
231 struct ocelot_port *ocelot_port = ocelot->ports[port];
232
233 if (!ocelot_port || !ocelot_port->bridge ||
234 !br_vlan_enabled(ocelot_port->bridge))
235 continue;
236
237 if (!bridge) {
238 bridge = ocelot_port->bridge;
239 continue;
240 }
241
242 if (bridge == ocelot_port->bridge)
243 continue;
244
245 NL_SET_ERR_MSG_MOD(extack,
246 "Only one VLAN-aware bridge is supported");
247 return -EBUSY;
248 }
249
250 return 0;
251 }
252
ocelot_vlant_read_vlanaccess(struct ocelot * ocelot)253 static inline u32 ocelot_vlant_read_vlanaccess(struct ocelot *ocelot)
254 {
255 return ocelot_read(ocelot, ANA_TABLES_VLANACCESS);
256 }
257
ocelot_vlant_wait_for_completion(struct ocelot * ocelot)258 static inline int ocelot_vlant_wait_for_completion(struct ocelot *ocelot)
259 {
260 u32 val;
261
262 return readx_poll_timeout(ocelot_vlant_read_vlanaccess,
263 ocelot,
264 val,
265 (val & ANA_TABLES_VLANACCESS_VLAN_TBL_CMD_M) ==
266 ANA_TABLES_VLANACCESS_CMD_IDLE,
267 TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US);
268 }
269
ocelot_vlant_set_mask(struct ocelot * ocelot,u16 vid,u32 mask)270 static int ocelot_vlant_set_mask(struct ocelot *ocelot, u16 vid, u32 mask)
271 {
272 /* Select the VID to configure */
273 ocelot_write(ocelot, ANA_TABLES_VLANTIDX_V_INDEX(vid),
274 ANA_TABLES_VLANTIDX);
275 /* Set the vlan port members mask and issue a write command */
276 ocelot_write(ocelot, ANA_TABLES_VLANACCESS_VLAN_PORT_MASK(mask) |
277 ANA_TABLES_VLANACCESS_CMD_WRITE,
278 ANA_TABLES_VLANACCESS);
279
280 return ocelot_vlant_wait_for_completion(ocelot);
281 }
282
ocelot_port_num_untagged_vlans(struct ocelot * ocelot,int port)283 static int ocelot_port_num_untagged_vlans(struct ocelot *ocelot, int port)
284 {
285 struct ocelot_bridge_vlan *vlan;
286 int num_untagged = 0;
287
288 list_for_each_entry(vlan, &ocelot->vlans, list) {
289 if (!(vlan->portmask & BIT(port)))
290 continue;
291
292 /* Ignore the VLAN added by ocelot_add_vlan_unaware_pvid(),
293 * because this is never active in hardware at the same time as
294 * the bridge VLANs, which only matter in VLAN-aware mode.
295 */
296 if (vlan->vid >= OCELOT_RSV_VLAN_RANGE_START)
297 continue;
298
299 if (vlan->untagged & BIT(port))
300 num_untagged++;
301 }
302
303 return num_untagged;
304 }
305
ocelot_port_num_tagged_vlans(struct ocelot * ocelot,int port)306 static int ocelot_port_num_tagged_vlans(struct ocelot *ocelot, int port)
307 {
308 struct ocelot_bridge_vlan *vlan;
309 int num_tagged = 0;
310
311 list_for_each_entry(vlan, &ocelot->vlans, list) {
312 if (!(vlan->portmask & BIT(port)))
313 continue;
314
315 if (!(vlan->untagged & BIT(port)))
316 num_tagged++;
317 }
318
319 return num_tagged;
320 }
321
322 /* We use native VLAN when we have to mix egress-tagged VLANs with exactly
323 * _one_ egress-untagged VLAN (_the_ native VLAN)
324 */
ocelot_port_uses_native_vlan(struct ocelot * ocelot,int port)325 static bool ocelot_port_uses_native_vlan(struct ocelot *ocelot, int port)
326 {
327 return ocelot_port_num_tagged_vlans(ocelot, port) &&
328 ocelot_port_num_untagged_vlans(ocelot, port) == 1;
329 }
330
331 static struct ocelot_bridge_vlan *
ocelot_port_find_native_vlan(struct ocelot * ocelot,int port)332 ocelot_port_find_native_vlan(struct ocelot *ocelot, int port)
333 {
334 struct ocelot_bridge_vlan *vlan;
335
336 list_for_each_entry(vlan, &ocelot->vlans, list)
337 if (vlan->portmask & BIT(port) && vlan->untagged & BIT(port))
338 return vlan;
339
340 return NULL;
341 }
342
343 /* Keep in sync REW_TAG_CFG_TAG_CFG and, if applicable,
344 * REW_PORT_VLAN_CFG_PORT_VID, with the bridge VLAN table and VLAN awareness
345 * state of the port.
346 */
ocelot_port_manage_port_tag(struct ocelot * ocelot,int port)347 static void ocelot_port_manage_port_tag(struct ocelot *ocelot, int port)
348 {
349 struct ocelot_port *ocelot_port = ocelot->ports[port];
350 enum ocelot_port_tag_config tag_cfg;
351 bool uses_native_vlan = false;
352
353 if (ocelot_port->vlan_aware) {
354 uses_native_vlan = ocelot_port_uses_native_vlan(ocelot, port);
355
356 if (uses_native_vlan)
357 tag_cfg = OCELOT_PORT_TAG_NATIVE;
358 else if (ocelot_port_num_untagged_vlans(ocelot, port))
359 tag_cfg = OCELOT_PORT_TAG_DISABLED;
360 else
361 tag_cfg = OCELOT_PORT_TAG_TRUNK;
362 } else {
363 tag_cfg = OCELOT_PORT_TAG_DISABLED;
364 }
365
366 ocelot_rmw_gix(ocelot, REW_TAG_CFG_TAG_CFG(tag_cfg),
367 REW_TAG_CFG_TAG_CFG_M,
368 REW_TAG_CFG, port);
369
370 if (uses_native_vlan) {
371 struct ocelot_bridge_vlan *native_vlan;
372
373 /* Not having a native VLAN is impossible, because
374 * ocelot_port_num_untagged_vlans has returned 1.
375 * So there is no use in checking for NULL here.
376 */
377 native_vlan = ocelot_port_find_native_vlan(ocelot, port);
378
379 ocelot_rmw_gix(ocelot,
380 REW_PORT_VLAN_CFG_PORT_VID(native_vlan->vid),
381 REW_PORT_VLAN_CFG_PORT_VID_M,
382 REW_PORT_VLAN_CFG, port);
383 }
384 }
385
ocelot_bridge_num_find(struct ocelot * ocelot,const struct net_device * bridge)386 int ocelot_bridge_num_find(struct ocelot *ocelot,
387 const struct net_device *bridge)
388 {
389 int port;
390
391 for (port = 0; port < ocelot->num_phys_ports; port++) {
392 struct ocelot_port *ocelot_port = ocelot->ports[port];
393
394 if (ocelot_port && ocelot_port->bridge == bridge)
395 return ocelot_port->bridge_num;
396 }
397
398 return -1;
399 }
400 EXPORT_SYMBOL_GPL(ocelot_bridge_num_find);
401
ocelot_vlan_unaware_pvid(struct ocelot * ocelot,const struct net_device * bridge)402 static u16 ocelot_vlan_unaware_pvid(struct ocelot *ocelot,
403 const struct net_device *bridge)
404 {
405 int bridge_num;
406
407 /* Standalone ports use VID 0 */
408 if (!bridge)
409 return 0;
410
411 bridge_num = ocelot_bridge_num_find(ocelot, bridge);
412 if (WARN_ON(bridge_num < 0))
413 return 0;
414
415 /* VLAN-unaware bridges use a reserved VID going from 4095 downwards */
416 return VLAN_N_VID - bridge_num - 1;
417 }
418
419 /* Default vlan to clasify for untagged frames (may be zero) */
ocelot_port_set_pvid(struct ocelot * ocelot,int port,const struct ocelot_bridge_vlan * pvid_vlan)420 static void ocelot_port_set_pvid(struct ocelot *ocelot, int port,
421 const struct ocelot_bridge_vlan *pvid_vlan)
422 {
423 struct ocelot_port *ocelot_port = ocelot->ports[port];
424 u16 pvid = ocelot_vlan_unaware_pvid(ocelot, ocelot_port->bridge);
425 u32 val = 0;
426
427 ocelot_port->pvid_vlan = pvid_vlan;
428
429 if (ocelot_port->vlan_aware && pvid_vlan)
430 pvid = pvid_vlan->vid;
431
432 ocelot_rmw_gix(ocelot,
433 ANA_PORT_VLAN_CFG_VLAN_VID(pvid),
434 ANA_PORT_VLAN_CFG_VLAN_VID_M,
435 ANA_PORT_VLAN_CFG, port);
436
437 /* If there's no pvid, we should drop not only untagged traffic (which
438 * happens automatically), but also 802.1p traffic which gets
439 * classified to VLAN 0, but that is always in our RX filter, so it
440 * would get accepted were it not for this setting.
441 */
442 if (!pvid_vlan && ocelot_port->vlan_aware)
443 val = ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA |
444 ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA;
445
446 ocelot_rmw_gix(ocelot, val,
447 ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA |
448 ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA,
449 ANA_PORT_DROP_CFG, port);
450 }
451
ocelot_bridge_vlan_find(struct ocelot * ocelot,u16 vid)452 static struct ocelot_bridge_vlan *ocelot_bridge_vlan_find(struct ocelot *ocelot,
453 u16 vid)
454 {
455 struct ocelot_bridge_vlan *vlan;
456
457 list_for_each_entry(vlan, &ocelot->vlans, list)
458 if (vlan->vid == vid)
459 return vlan;
460
461 return NULL;
462 }
463
ocelot_vlan_member_add(struct ocelot * ocelot,int port,u16 vid,bool untagged)464 static int ocelot_vlan_member_add(struct ocelot *ocelot, int port, u16 vid,
465 bool untagged)
466 {
467 struct ocelot_bridge_vlan *vlan = ocelot_bridge_vlan_find(ocelot, vid);
468 unsigned long portmask;
469 int err;
470
471 if (vlan) {
472 portmask = vlan->portmask | BIT(port);
473
474 err = ocelot_vlant_set_mask(ocelot, vid, portmask);
475 if (err)
476 return err;
477
478 vlan->portmask = portmask;
479 /* Bridge VLANs can be overwritten with a different
480 * egress-tagging setting, so make sure to override an untagged
481 * with a tagged VID if that's going on.
482 */
483 if (untagged)
484 vlan->untagged |= BIT(port);
485 else
486 vlan->untagged &= ~BIT(port);
487
488 return 0;
489 }
490
491 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
492 if (!vlan)
493 return -ENOMEM;
494
495 portmask = BIT(port);
496
497 err = ocelot_vlant_set_mask(ocelot, vid, portmask);
498 if (err) {
499 kfree(vlan);
500 return err;
501 }
502
503 vlan->vid = vid;
504 vlan->portmask = portmask;
505 if (untagged)
506 vlan->untagged = BIT(port);
507 INIT_LIST_HEAD(&vlan->list);
508 list_add_tail(&vlan->list, &ocelot->vlans);
509
510 return 0;
511 }
512
ocelot_vlan_member_del(struct ocelot * ocelot,int port,u16 vid)513 static int ocelot_vlan_member_del(struct ocelot *ocelot, int port, u16 vid)
514 {
515 struct ocelot_bridge_vlan *vlan = ocelot_bridge_vlan_find(ocelot, vid);
516 unsigned long portmask;
517 int err;
518
519 if (!vlan)
520 return 0;
521
522 portmask = vlan->portmask & ~BIT(port);
523
524 err = ocelot_vlant_set_mask(ocelot, vid, portmask);
525 if (err)
526 return err;
527
528 vlan->portmask = portmask;
529 if (vlan->portmask)
530 return 0;
531
532 list_del(&vlan->list);
533 kfree(vlan);
534
535 return 0;
536 }
537
ocelot_add_vlan_unaware_pvid(struct ocelot * ocelot,int port,const struct net_device * bridge)538 static int ocelot_add_vlan_unaware_pvid(struct ocelot *ocelot, int port,
539 const struct net_device *bridge)
540 {
541 u16 vid = ocelot_vlan_unaware_pvid(ocelot, bridge);
542
543 return ocelot_vlan_member_add(ocelot, port, vid, true);
544 }
545
ocelot_del_vlan_unaware_pvid(struct ocelot * ocelot,int port,const struct net_device * bridge)546 static int ocelot_del_vlan_unaware_pvid(struct ocelot *ocelot, int port,
547 const struct net_device *bridge)
548 {
549 u16 vid = ocelot_vlan_unaware_pvid(ocelot, bridge);
550
551 return ocelot_vlan_member_del(ocelot, port, vid);
552 }
553
ocelot_port_vlan_filtering(struct ocelot * ocelot,int port,bool vlan_aware,struct netlink_ext_ack * extack)554 int ocelot_port_vlan_filtering(struct ocelot *ocelot, int port,
555 bool vlan_aware, struct netlink_ext_ack *extack)
556 {
557 struct ocelot_vcap_block *block = &ocelot->block[VCAP_IS1];
558 struct ocelot_port *ocelot_port = ocelot->ports[port];
559 struct ocelot_vcap_filter *filter;
560 int err = 0;
561 u32 val;
562
563 list_for_each_entry(filter, &block->rules, list) {
564 if (filter->ingress_port_mask & BIT(port) &&
565 filter->action.vid_replace_ena) {
566 NL_SET_ERR_MSG_MOD(extack,
567 "Cannot change VLAN state with vlan modify rules active");
568 return -EBUSY;
569 }
570 }
571
572 err = ocelot_single_vlan_aware_bridge(ocelot, extack);
573 if (err)
574 return err;
575
576 if (vlan_aware)
577 err = ocelot_del_vlan_unaware_pvid(ocelot, port,
578 ocelot_port->bridge);
579 else if (ocelot_port->bridge)
580 err = ocelot_add_vlan_unaware_pvid(ocelot, port,
581 ocelot_port->bridge);
582 if (err)
583 return err;
584
585 ocelot_port->vlan_aware = vlan_aware;
586
587 if (vlan_aware)
588 val = ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
589 ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1);
590 else
591 val = 0;
592 ocelot_rmw_gix(ocelot, val,
593 ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
594 ANA_PORT_VLAN_CFG_VLAN_POP_CNT_M,
595 ANA_PORT_VLAN_CFG, port);
596
597 ocelot_port_set_pvid(ocelot, port, ocelot_port->pvid_vlan);
598 ocelot_port_manage_port_tag(ocelot, port);
599
600 return 0;
601 }
602 EXPORT_SYMBOL(ocelot_port_vlan_filtering);
603
ocelot_vlan_prepare(struct ocelot * ocelot,int port,u16 vid,bool pvid,bool untagged,struct netlink_ext_ack * extack)604 int ocelot_vlan_prepare(struct ocelot *ocelot, int port, u16 vid, bool pvid,
605 bool untagged, struct netlink_ext_ack *extack)
606 {
607 if (untagged) {
608 /* We are adding an egress-tagged VLAN */
609 if (ocelot_port_uses_native_vlan(ocelot, port)) {
610 NL_SET_ERR_MSG_MOD(extack,
611 "Port with egress-tagged VLANs cannot have more than one egress-untagged (native) VLAN");
612 return -EBUSY;
613 }
614 } else {
615 /* We are adding an egress-tagged VLAN */
616 if (ocelot_port_num_untagged_vlans(ocelot, port) > 1) {
617 NL_SET_ERR_MSG_MOD(extack,
618 "Port with more than one egress-untagged VLAN cannot have egress-tagged VLANs");
619 return -EBUSY;
620 }
621 }
622
623 if (vid > OCELOT_RSV_VLAN_RANGE_START) {
624 NL_SET_ERR_MSG_MOD(extack,
625 "VLAN range 4000-4095 reserved for VLAN-unaware bridging");
626 return -EBUSY;
627 }
628
629 return 0;
630 }
631 EXPORT_SYMBOL(ocelot_vlan_prepare);
632
ocelot_vlan_add(struct ocelot * ocelot,int port,u16 vid,bool pvid,bool untagged)633 int ocelot_vlan_add(struct ocelot *ocelot, int port, u16 vid, bool pvid,
634 bool untagged)
635 {
636 int err;
637
638 /* Ignore VID 0 added to our RX filter by the 8021q module, since
639 * that collides with OCELOT_STANDALONE_PVID and changes it from
640 * egress-untagged to egress-tagged.
641 */
642 if (!vid)
643 return 0;
644
645 err = ocelot_vlan_member_add(ocelot, port, vid, untagged);
646 if (err)
647 return err;
648
649 /* Default ingress vlan classification */
650 if (pvid)
651 ocelot_port_set_pvid(ocelot, port,
652 ocelot_bridge_vlan_find(ocelot, vid));
653
654 /* Untagged egress vlan clasification */
655 ocelot_port_manage_port_tag(ocelot, port);
656
657 return 0;
658 }
659 EXPORT_SYMBOL(ocelot_vlan_add);
660
ocelot_vlan_del(struct ocelot * ocelot,int port,u16 vid)661 int ocelot_vlan_del(struct ocelot *ocelot, int port, u16 vid)
662 {
663 struct ocelot_port *ocelot_port = ocelot->ports[port];
664 bool del_pvid = false;
665 int err;
666
667 if (!vid)
668 return 0;
669
670 if (ocelot_port->pvid_vlan && ocelot_port->pvid_vlan->vid == vid)
671 del_pvid = true;
672
673 err = ocelot_vlan_member_del(ocelot, port, vid);
674 if (err)
675 return err;
676
677 /* Ingress */
678 if (del_pvid)
679 ocelot_port_set_pvid(ocelot, port, NULL);
680
681 /* Egress */
682 ocelot_port_manage_port_tag(ocelot, port);
683
684 return 0;
685 }
686 EXPORT_SYMBOL(ocelot_vlan_del);
687
ocelot_vlan_init(struct ocelot * ocelot)688 static void ocelot_vlan_init(struct ocelot *ocelot)
689 {
690 unsigned long all_ports = GENMASK(ocelot->num_phys_ports - 1, 0);
691 u16 port, vid;
692
693 /* Clear VLAN table, by default all ports are members of all VLANs */
694 ocelot_write(ocelot, ANA_TABLES_VLANACCESS_CMD_INIT,
695 ANA_TABLES_VLANACCESS);
696 ocelot_vlant_wait_for_completion(ocelot);
697
698 /* Configure the port VLAN memberships */
699 for (vid = 1; vid < VLAN_N_VID; vid++)
700 ocelot_vlant_set_mask(ocelot, vid, 0);
701
702 /* We need VID 0 to get traffic on standalone ports.
703 * It is added automatically if the 8021q module is loaded, but we
704 * can't rely on that since it might not be.
705 */
706 ocelot_vlant_set_mask(ocelot, OCELOT_STANDALONE_PVID, all_ports);
707
708 /* Set vlan ingress filter mask to all ports but the CPU port by
709 * default.
710 */
711 ocelot_write(ocelot, all_ports, ANA_VLANMASK);
712
713 for (port = 0; port < ocelot->num_phys_ports; port++) {
714 ocelot_write_gix(ocelot, 0, REW_PORT_VLAN_CFG, port);
715 ocelot_write_gix(ocelot, 0, REW_TAG_CFG, port);
716 }
717 }
718
ocelot_read_eq_avail(struct ocelot * ocelot,int port)719 static u32 ocelot_read_eq_avail(struct ocelot *ocelot, int port)
720 {
721 return ocelot_read_rix(ocelot, QSYS_SW_STATUS, port);
722 }
723
ocelot_port_flush(struct ocelot * ocelot,int port)724 static int ocelot_port_flush(struct ocelot *ocelot, int port)
725 {
726 unsigned int pause_ena;
727 int err, val;
728
729 /* Disable dequeuing from the egress queues */
730 ocelot_rmw_rix(ocelot, QSYS_PORT_MODE_DEQUEUE_DIS,
731 QSYS_PORT_MODE_DEQUEUE_DIS,
732 QSYS_PORT_MODE, port);
733
734 /* Disable flow control */
735 ocelot_fields_read(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, &pause_ena);
736 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 0);
737
738 /* Disable priority flow control */
739 ocelot_fields_write(ocelot, port,
740 QSYS_SWITCH_PORT_MODE_TX_PFC_ENA, 0);
741
742 /* Wait at least the time it takes to receive a frame of maximum length
743 * at the port.
744 * Worst-case delays for 10 kilobyte jumbo frames are:
745 * 8 ms on a 10M port
746 * 800 μs on a 100M port
747 * 80 μs on a 1G port
748 * 32 μs on a 2.5G port
749 */
750 usleep_range(8000, 10000);
751
752 /* Disable half duplex backpressure. */
753 ocelot_rmw_rix(ocelot, 0, SYS_FRONT_PORT_MODE_HDX_MODE,
754 SYS_FRONT_PORT_MODE, port);
755
756 /* Flush the queues associated with the port. */
757 ocelot_rmw_gix(ocelot, REW_PORT_CFG_FLUSH_ENA, REW_PORT_CFG_FLUSH_ENA,
758 REW_PORT_CFG, port);
759
760 /* Enable dequeuing from the egress queues. */
761 ocelot_rmw_rix(ocelot, 0, QSYS_PORT_MODE_DEQUEUE_DIS, QSYS_PORT_MODE,
762 port);
763
764 /* Wait until flushing is complete. */
765 err = read_poll_timeout(ocelot_read_eq_avail, val, !val,
766 100, 2000000, false, ocelot, port);
767
768 /* Clear flushing again. */
769 ocelot_rmw_gix(ocelot, 0, REW_PORT_CFG_FLUSH_ENA, REW_PORT_CFG, port);
770
771 /* Re-enable flow control */
772 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, pause_ena);
773
774 return err;
775 }
776
ocelot_phylink_mac_link_down(struct ocelot * ocelot,int port,unsigned int link_an_mode,phy_interface_t interface,unsigned long quirks)777 void ocelot_phylink_mac_link_down(struct ocelot *ocelot, int port,
778 unsigned int link_an_mode,
779 phy_interface_t interface,
780 unsigned long quirks)
781 {
782 struct ocelot_port *ocelot_port = ocelot->ports[port];
783 int err;
784
785 ocelot_port->speed = SPEED_UNKNOWN;
786
787 ocelot_port_rmwl(ocelot_port, 0, DEV_MAC_ENA_CFG_RX_ENA,
788 DEV_MAC_ENA_CFG);
789
790 if (ocelot->ops->cut_through_fwd) {
791 mutex_lock(&ocelot->fwd_domain_lock);
792 ocelot->ops->cut_through_fwd(ocelot);
793 mutex_unlock(&ocelot->fwd_domain_lock);
794 }
795
796 ocelot_fields_write(ocelot, port, QSYS_SWITCH_PORT_MODE_PORT_ENA, 0);
797
798 err = ocelot_port_flush(ocelot, port);
799 if (err)
800 dev_err(ocelot->dev, "failed to flush port %d: %d\n",
801 port, err);
802
803 /* Put the port in reset. */
804 if (interface != PHY_INTERFACE_MODE_QSGMII ||
805 !(quirks & OCELOT_QUIRK_QSGMII_PORTS_MUST_BE_UP))
806 ocelot_port_rmwl(ocelot_port,
807 DEV_CLOCK_CFG_MAC_TX_RST |
808 DEV_CLOCK_CFG_MAC_RX_RST,
809 DEV_CLOCK_CFG_MAC_TX_RST |
810 DEV_CLOCK_CFG_MAC_RX_RST,
811 DEV_CLOCK_CFG);
812 }
813 EXPORT_SYMBOL_GPL(ocelot_phylink_mac_link_down);
814
ocelot_phylink_mac_link_up(struct ocelot * ocelot,int port,struct phy_device * phydev,unsigned int link_an_mode,phy_interface_t interface,int speed,int duplex,bool tx_pause,bool rx_pause,unsigned long quirks)815 void ocelot_phylink_mac_link_up(struct ocelot *ocelot, int port,
816 struct phy_device *phydev,
817 unsigned int link_an_mode,
818 phy_interface_t interface,
819 int speed, int duplex,
820 bool tx_pause, bool rx_pause,
821 unsigned long quirks)
822 {
823 struct ocelot_port *ocelot_port = ocelot->ports[port];
824 int mac_speed, mode = 0;
825 u32 mac_fc_cfg;
826
827 ocelot_port->speed = speed;
828
829 /* The MAC might be integrated in systems where the MAC speed is fixed
830 * and it's the PCS who is performing the rate adaptation, so we have
831 * to write "1000Mbps" into the LINK_SPEED field of DEV_CLOCK_CFG
832 * (which is also its default value).
833 */
834 if ((quirks & OCELOT_QUIRK_PCS_PERFORMS_RATE_ADAPTATION) ||
835 speed == SPEED_1000) {
836 mac_speed = OCELOT_SPEED_1000;
837 mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
838 } else if (speed == SPEED_2500) {
839 mac_speed = OCELOT_SPEED_2500;
840 mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
841 } else if (speed == SPEED_100) {
842 mac_speed = OCELOT_SPEED_100;
843 } else {
844 mac_speed = OCELOT_SPEED_10;
845 }
846
847 if (duplex == DUPLEX_FULL)
848 mode |= DEV_MAC_MODE_CFG_FDX_ENA;
849
850 ocelot_port_writel(ocelot_port, mode, DEV_MAC_MODE_CFG);
851
852 /* Take port out of reset by clearing the MAC_TX_RST, MAC_RX_RST and
853 * PORT_RST bits in DEV_CLOCK_CFG.
854 */
855 ocelot_port_writel(ocelot_port, DEV_CLOCK_CFG_LINK_SPEED(mac_speed),
856 DEV_CLOCK_CFG);
857
858 switch (speed) {
859 case SPEED_10:
860 mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_10);
861 break;
862 case SPEED_100:
863 mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_100);
864 break;
865 case SPEED_1000:
866 case SPEED_2500:
867 mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_1000);
868 break;
869 default:
870 dev_err(ocelot->dev, "Unsupported speed on port %d: %d\n",
871 port, speed);
872 return;
873 }
874
875 /* Handle RX pause in all cases, with 2500base-X this is used for rate
876 * adaptation.
877 */
878 mac_fc_cfg |= SYS_MAC_FC_CFG_RX_FC_ENA;
879
880 if (tx_pause)
881 mac_fc_cfg |= SYS_MAC_FC_CFG_TX_FC_ENA |
882 SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) |
883 SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) |
884 SYS_MAC_FC_CFG_ZERO_PAUSE_ENA;
885
886 /* Flow control. Link speed is only used here to evaluate the time
887 * specification in incoming pause frames.
888 */
889 ocelot_write_rix(ocelot, mac_fc_cfg, SYS_MAC_FC_CFG, port);
890
891 ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, port);
892
893 /* Don't attempt to send PAUSE frames on the NPI port, it's broken */
894 if (port != ocelot->npi)
895 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA,
896 tx_pause);
897
898 /* Undo the effects of ocelot_phylink_mac_link_down:
899 * enable MAC module
900 */
901 ocelot_port_writel(ocelot_port, DEV_MAC_ENA_CFG_RX_ENA |
902 DEV_MAC_ENA_CFG_TX_ENA, DEV_MAC_ENA_CFG);
903
904 /* If the port supports cut-through forwarding, update the masks before
905 * enabling forwarding on the port.
906 */
907 if (ocelot->ops->cut_through_fwd) {
908 mutex_lock(&ocelot->fwd_domain_lock);
909 ocelot->ops->cut_through_fwd(ocelot);
910 mutex_unlock(&ocelot->fwd_domain_lock);
911 }
912
913 /* Core: Enable port for frame transfer */
914 ocelot_fields_write(ocelot, port,
915 QSYS_SWITCH_PORT_MODE_PORT_ENA, 1);
916 }
917 EXPORT_SYMBOL_GPL(ocelot_phylink_mac_link_up);
918
ocelot_rx_frame_word(struct ocelot * ocelot,u8 grp,bool ifh,u32 * rval)919 static int ocelot_rx_frame_word(struct ocelot *ocelot, u8 grp, bool ifh,
920 u32 *rval)
921 {
922 u32 bytes_valid, val;
923
924 val = ocelot_read_rix(ocelot, QS_XTR_RD, grp);
925 if (val == XTR_NOT_READY) {
926 if (ifh)
927 return -EIO;
928
929 do {
930 val = ocelot_read_rix(ocelot, QS_XTR_RD, grp);
931 } while (val == XTR_NOT_READY);
932 }
933
934 switch (val) {
935 case XTR_ABORT:
936 return -EIO;
937 case XTR_EOF_0:
938 case XTR_EOF_1:
939 case XTR_EOF_2:
940 case XTR_EOF_3:
941 case XTR_PRUNED:
942 bytes_valid = XTR_VALID_BYTES(val);
943 val = ocelot_read_rix(ocelot, QS_XTR_RD, grp);
944 if (val == XTR_ESCAPE)
945 *rval = ocelot_read_rix(ocelot, QS_XTR_RD, grp);
946 else
947 *rval = val;
948
949 return bytes_valid;
950 case XTR_ESCAPE:
951 *rval = ocelot_read_rix(ocelot, QS_XTR_RD, grp);
952
953 return 4;
954 default:
955 *rval = val;
956
957 return 4;
958 }
959 }
960
ocelot_xtr_poll_xfh(struct ocelot * ocelot,int grp,u32 * xfh)961 static int ocelot_xtr_poll_xfh(struct ocelot *ocelot, int grp, u32 *xfh)
962 {
963 int i, err = 0;
964
965 for (i = 0; i < OCELOT_TAG_LEN / 4; i++) {
966 err = ocelot_rx_frame_word(ocelot, grp, true, &xfh[i]);
967 if (err != 4)
968 return (err < 0) ? err : -EIO;
969 }
970
971 return 0;
972 }
973
ocelot_ptp_rx_timestamp(struct ocelot * ocelot,struct sk_buff * skb,u64 timestamp)974 void ocelot_ptp_rx_timestamp(struct ocelot *ocelot, struct sk_buff *skb,
975 u64 timestamp)
976 {
977 struct skb_shared_hwtstamps *shhwtstamps;
978 u64 tod_in_ns, full_ts_in_ns;
979 struct timespec64 ts;
980
981 ocelot_ptp_gettime64(&ocelot->ptp_info, &ts);
982
983 tod_in_ns = ktime_set(ts.tv_sec, ts.tv_nsec);
984 if ((tod_in_ns & 0xffffffff) < timestamp)
985 full_ts_in_ns = (((tod_in_ns >> 32) - 1) << 32) |
986 timestamp;
987 else
988 full_ts_in_ns = (tod_in_ns & GENMASK_ULL(63, 32)) |
989 timestamp;
990
991 shhwtstamps = skb_hwtstamps(skb);
992 memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps));
993 shhwtstamps->hwtstamp = full_ts_in_ns;
994 }
995 EXPORT_SYMBOL(ocelot_ptp_rx_timestamp);
996
ocelot_xtr_poll_frame(struct ocelot * ocelot,int grp,struct sk_buff ** nskb)997 int ocelot_xtr_poll_frame(struct ocelot *ocelot, int grp, struct sk_buff **nskb)
998 {
999 u64 timestamp, src_port, len;
1000 u32 xfh[OCELOT_TAG_LEN / 4];
1001 struct net_device *dev;
1002 struct sk_buff *skb;
1003 int sz, buf_len;
1004 u32 val, *buf;
1005 int err;
1006
1007 err = ocelot_xtr_poll_xfh(ocelot, grp, xfh);
1008 if (err)
1009 return err;
1010
1011 ocelot_xfh_get_src_port(xfh, &src_port);
1012 ocelot_xfh_get_len(xfh, &len);
1013 ocelot_xfh_get_rew_val(xfh, ×tamp);
1014
1015 if (WARN_ON(src_port >= ocelot->num_phys_ports))
1016 return -EINVAL;
1017
1018 dev = ocelot->ops->port_to_netdev(ocelot, src_port);
1019 if (!dev)
1020 return -EINVAL;
1021
1022 skb = netdev_alloc_skb(dev, len);
1023 if (unlikely(!skb)) {
1024 netdev_err(dev, "Unable to allocate sk_buff\n");
1025 return -ENOMEM;
1026 }
1027
1028 buf_len = len - ETH_FCS_LEN;
1029 buf = (u32 *)skb_put(skb, buf_len);
1030
1031 len = 0;
1032 do {
1033 sz = ocelot_rx_frame_word(ocelot, grp, false, &val);
1034 if (sz < 0) {
1035 err = sz;
1036 goto out_free_skb;
1037 }
1038 *buf++ = val;
1039 len += sz;
1040 } while (len < buf_len);
1041
1042 /* Read the FCS */
1043 sz = ocelot_rx_frame_word(ocelot, grp, false, &val);
1044 if (sz < 0) {
1045 err = sz;
1046 goto out_free_skb;
1047 }
1048
1049 /* Update the statistics if part of the FCS was read before */
1050 len -= ETH_FCS_LEN - sz;
1051
1052 if (unlikely(dev->features & NETIF_F_RXFCS)) {
1053 buf = (u32 *)skb_put(skb, ETH_FCS_LEN);
1054 *buf = val;
1055 }
1056
1057 if (ocelot->ptp)
1058 ocelot_ptp_rx_timestamp(ocelot, skb, timestamp);
1059
1060 /* Everything we see on an interface that is in the HW bridge
1061 * has already been forwarded.
1062 */
1063 if (ocelot->ports[src_port]->bridge)
1064 skb->offload_fwd_mark = 1;
1065
1066 skb->protocol = eth_type_trans(skb, dev);
1067
1068 *nskb = skb;
1069
1070 return 0;
1071
1072 out_free_skb:
1073 kfree_skb(skb);
1074 return err;
1075 }
1076 EXPORT_SYMBOL(ocelot_xtr_poll_frame);
1077
ocelot_can_inject(struct ocelot * ocelot,int grp)1078 bool ocelot_can_inject(struct ocelot *ocelot, int grp)
1079 {
1080 u32 val = ocelot_read(ocelot, QS_INJ_STATUS);
1081
1082 if (!(val & QS_INJ_STATUS_FIFO_RDY(BIT(grp))))
1083 return false;
1084 if (val & QS_INJ_STATUS_WMARK_REACHED(BIT(grp)))
1085 return false;
1086
1087 return true;
1088 }
1089 EXPORT_SYMBOL(ocelot_can_inject);
1090
ocelot_ifh_port_set(void * ifh,int port,u32 rew_op,u32 vlan_tag)1091 void ocelot_ifh_port_set(void *ifh, int port, u32 rew_op, u32 vlan_tag)
1092 {
1093 ocelot_ifh_set_bypass(ifh, 1);
1094 ocelot_ifh_set_dest(ifh, BIT_ULL(port));
1095 ocelot_ifh_set_tag_type(ifh, IFH_TAG_TYPE_C);
1096 if (vlan_tag)
1097 ocelot_ifh_set_vlan_tci(ifh, vlan_tag);
1098 if (rew_op)
1099 ocelot_ifh_set_rew_op(ifh, rew_op);
1100 }
1101 EXPORT_SYMBOL(ocelot_ifh_port_set);
1102
ocelot_port_inject_frame(struct ocelot * ocelot,int port,int grp,u32 rew_op,struct sk_buff * skb)1103 void ocelot_port_inject_frame(struct ocelot *ocelot, int port, int grp,
1104 u32 rew_op, struct sk_buff *skb)
1105 {
1106 u32 ifh[OCELOT_TAG_LEN / 4] = {0};
1107 unsigned int i, count, last;
1108
1109 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
1110 QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp);
1111
1112 ocelot_ifh_port_set(ifh, port, rew_op, skb_vlan_tag_get(skb));
1113
1114 for (i = 0; i < OCELOT_TAG_LEN / 4; i++)
1115 ocelot_write_rix(ocelot, ifh[i], QS_INJ_WR, grp);
1116
1117 count = DIV_ROUND_UP(skb->len, 4);
1118 last = skb->len % 4;
1119 for (i = 0; i < count; i++)
1120 ocelot_write_rix(ocelot, ((u32 *)skb->data)[i], QS_INJ_WR, grp);
1121
1122 /* Add padding */
1123 while (i < (OCELOT_BUFFER_CELL_SZ / 4)) {
1124 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
1125 i++;
1126 }
1127
1128 /* Indicate EOF and valid bytes in last word */
1129 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
1130 QS_INJ_CTRL_VLD_BYTES(skb->len < OCELOT_BUFFER_CELL_SZ ? 0 : last) |
1131 QS_INJ_CTRL_EOF,
1132 QS_INJ_CTRL, grp);
1133
1134 /* Add dummy CRC */
1135 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
1136 skb_tx_timestamp(skb);
1137
1138 skb->dev->stats.tx_packets++;
1139 skb->dev->stats.tx_bytes += skb->len;
1140 }
1141 EXPORT_SYMBOL(ocelot_port_inject_frame);
1142
ocelot_drain_cpu_queue(struct ocelot * ocelot,int grp)1143 void ocelot_drain_cpu_queue(struct ocelot *ocelot, int grp)
1144 {
1145 while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp))
1146 ocelot_read_rix(ocelot, QS_XTR_RD, grp);
1147 }
1148 EXPORT_SYMBOL(ocelot_drain_cpu_queue);
1149
ocelot_fdb_add(struct ocelot * ocelot,int port,const unsigned char * addr,u16 vid,const struct net_device * bridge)1150 int ocelot_fdb_add(struct ocelot *ocelot, int port, const unsigned char *addr,
1151 u16 vid, const struct net_device *bridge)
1152 {
1153 if (!vid)
1154 vid = ocelot_vlan_unaware_pvid(ocelot, bridge);
1155
1156 return ocelot_mact_learn(ocelot, port, addr, vid, ENTRYTYPE_LOCKED);
1157 }
1158 EXPORT_SYMBOL(ocelot_fdb_add);
1159
ocelot_fdb_del(struct ocelot * ocelot,int port,const unsigned char * addr,u16 vid,const struct net_device * bridge)1160 int ocelot_fdb_del(struct ocelot *ocelot, int port, const unsigned char *addr,
1161 u16 vid, const struct net_device *bridge)
1162 {
1163 if (!vid)
1164 vid = ocelot_vlan_unaware_pvid(ocelot, bridge);
1165
1166 return ocelot_mact_forget(ocelot, addr, vid);
1167 }
1168 EXPORT_SYMBOL(ocelot_fdb_del);
1169
1170 /* Caller must hold &ocelot->mact_lock */
ocelot_mact_read(struct ocelot * ocelot,int port,int row,int col,struct ocelot_mact_entry * entry)1171 static int ocelot_mact_read(struct ocelot *ocelot, int port, int row, int col,
1172 struct ocelot_mact_entry *entry)
1173 {
1174 u32 val, dst, macl, mach;
1175 char mac[ETH_ALEN];
1176
1177 /* Set row and column to read from */
1178 ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_M_INDEX, row);
1179 ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_BUCKET, col);
1180
1181 /* Issue a read command */
1182 ocelot_write(ocelot,
1183 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ),
1184 ANA_TABLES_MACACCESS);
1185
1186 if (ocelot_mact_wait_for_completion(ocelot))
1187 return -ETIMEDOUT;
1188
1189 /* Read the entry flags */
1190 val = ocelot_read(ocelot, ANA_TABLES_MACACCESS);
1191 if (!(val & ANA_TABLES_MACACCESS_VALID))
1192 return -EINVAL;
1193
1194 /* If the entry read has another port configured as its destination,
1195 * do not report it.
1196 */
1197 dst = (val & ANA_TABLES_MACACCESS_DEST_IDX_M) >> 3;
1198 if (dst != port)
1199 return -EINVAL;
1200
1201 /* Get the entry's MAC address and VLAN id */
1202 macl = ocelot_read(ocelot, ANA_TABLES_MACLDATA);
1203 mach = ocelot_read(ocelot, ANA_TABLES_MACHDATA);
1204
1205 mac[0] = (mach >> 8) & 0xff;
1206 mac[1] = (mach >> 0) & 0xff;
1207 mac[2] = (macl >> 24) & 0xff;
1208 mac[3] = (macl >> 16) & 0xff;
1209 mac[4] = (macl >> 8) & 0xff;
1210 mac[5] = (macl >> 0) & 0xff;
1211
1212 entry->vid = (mach >> 16) & 0xfff;
1213 ether_addr_copy(entry->mac, mac);
1214
1215 return 0;
1216 }
1217
ocelot_mact_flush(struct ocelot * ocelot,int port)1218 int ocelot_mact_flush(struct ocelot *ocelot, int port)
1219 {
1220 int err;
1221
1222 mutex_lock(&ocelot->mact_lock);
1223
1224 /* Program ageing filter for a single port */
1225 ocelot_write(ocelot, ANA_ANAGEFIL_PID_EN | ANA_ANAGEFIL_PID_VAL(port),
1226 ANA_ANAGEFIL);
1227
1228 /* Flushing dynamic FDB entries requires two successive age scans */
1229 ocelot_write(ocelot,
1230 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_AGE),
1231 ANA_TABLES_MACACCESS);
1232
1233 err = ocelot_mact_wait_for_completion(ocelot);
1234 if (err) {
1235 mutex_unlock(&ocelot->mact_lock);
1236 return err;
1237 }
1238
1239 /* And second... */
1240 ocelot_write(ocelot,
1241 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_AGE),
1242 ANA_TABLES_MACACCESS);
1243
1244 err = ocelot_mact_wait_for_completion(ocelot);
1245
1246 /* Restore ageing filter */
1247 ocelot_write(ocelot, 0, ANA_ANAGEFIL);
1248
1249 mutex_unlock(&ocelot->mact_lock);
1250
1251 return err;
1252 }
1253 EXPORT_SYMBOL_GPL(ocelot_mact_flush);
1254
ocelot_fdb_dump(struct ocelot * ocelot,int port,dsa_fdb_dump_cb_t * cb,void * data)1255 int ocelot_fdb_dump(struct ocelot *ocelot, int port,
1256 dsa_fdb_dump_cb_t *cb, void *data)
1257 {
1258 int err = 0;
1259 int i, j;
1260
1261 /* We could take the lock just around ocelot_mact_read, but doing so
1262 * thousands of times in a row seems rather pointless and inefficient.
1263 */
1264 mutex_lock(&ocelot->mact_lock);
1265
1266 /* Loop through all the mac tables entries. */
1267 for (i = 0; i < ocelot->num_mact_rows; i++) {
1268 for (j = 0; j < 4; j++) {
1269 struct ocelot_mact_entry entry;
1270 bool is_static;
1271
1272 err = ocelot_mact_read(ocelot, port, i, j, &entry);
1273 /* If the entry is invalid (wrong port, invalid...),
1274 * skip it.
1275 */
1276 if (err == -EINVAL)
1277 continue;
1278 else if (err)
1279 break;
1280
1281 is_static = (entry.type == ENTRYTYPE_LOCKED);
1282
1283 /* Hide the reserved VLANs used for
1284 * VLAN-unaware bridging.
1285 */
1286 if (entry.vid > OCELOT_RSV_VLAN_RANGE_START)
1287 entry.vid = 0;
1288
1289 err = cb(entry.mac, entry.vid, is_static, data);
1290 if (err)
1291 break;
1292 }
1293 }
1294
1295 mutex_unlock(&ocelot->mact_lock);
1296
1297 return err;
1298 }
1299 EXPORT_SYMBOL(ocelot_fdb_dump);
1300
ocelot_trap_add(struct ocelot * ocelot,int port,unsigned long cookie,bool take_ts,void (* populate)(struct ocelot_vcap_filter * f))1301 int ocelot_trap_add(struct ocelot *ocelot, int port,
1302 unsigned long cookie, bool take_ts,
1303 void (*populate)(struct ocelot_vcap_filter *f))
1304 {
1305 struct ocelot_vcap_block *block_vcap_is2;
1306 struct ocelot_vcap_filter *trap;
1307 bool new = false;
1308 int err;
1309
1310 block_vcap_is2 = &ocelot->block[VCAP_IS2];
1311
1312 trap = ocelot_vcap_block_find_filter_by_id(block_vcap_is2, cookie,
1313 false);
1314 if (!trap) {
1315 trap = kzalloc(sizeof(*trap), GFP_KERNEL);
1316 if (!trap)
1317 return -ENOMEM;
1318
1319 populate(trap);
1320 trap->prio = 1;
1321 trap->id.cookie = cookie;
1322 trap->id.tc_offload = false;
1323 trap->block_id = VCAP_IS2;
1324 trap->type = OCELOT_VCAP_FILTER_OFFLOAD;
1325 trap->lookup = 0;
1326 trap->action.cpu_copy_ena = true;
1327 trap->action.mask_mode = OCELOT_MASK_MODE_PERMIT_DENY;
1328 trap->action.port_mask = 0;
1329 trap->take_ts = take_ts;
1330 trap->is_trap = true;
1331 new = true;
1332 }
1333
1334 trap->ingress_port_mask |= BIT(port);
1335
1336 if (new)
1337 err = ocelot_vcap_filter_add(ocelot, trap, NULL);
1338 else
1339 err = ocelot_vcap_filter_replace(ocelot, trap);
1340 if (err) {
1341 trap->ingress_port_mask &= ~BIT(port);
1342 if (!trap->ingress_port_mask)
1343 kfree(trap);
1344 return err;
1345 }
1346
1347 return 0;
1348 }
1349
ocelot_trap_del(struct ocelot * ocelot,int port,unsigned long cookie)1350 int ocelot_trap_del(struct ocelot *ocelot, int port, unsigned long cookie)
1351 {
1352 struct ocelot_vcap_block *block_vcap_is2;
1353 struct ocelot_vcap_filter *trap;
1354
1355 block_vcap_is2 = &ocelot->block[VCAP_IS2];
1356
1357 trap = ocelot_vcap_block_find_filter_by_id(block_vcap_is2, cookie,
1358 false);
1359 if (!trap)
1360 return 0;
1361
1362 trap->ingress_port_mask &= ~BIT(port);
1363 if (!trap->ingress_port_mask)
1364 return ocelot_vcap_filter_del(ocelot, trap);
1365
1366 return ocelot_vcap_filter_replace(ocelot, trap);
1367 }
1368
ocelot_get_bond_mask(struct ocelot * ocelot,struct net_device * bond)1369 static u32 ocelot_get_bond_mask(struct ocelot *ocelot, struct net_device *bond)
1370 {
1371 u32 mask = 0;
1372 int port;
1373
1374 lockdep_assert_held(&ocelot->fwd_domain_lock);
1375
1376 for (port = 0; port < ocelot->num_phys_ports; port++) {
1377 struct ocelot_port *ocelot_port = ocelot->ports[port];
1378
1379 if (!ocelot_port)
1380 continue;
1381
1382 if (ocelot_port->bond == bond)
1383 mask |= BIT(port);
1384 }
1385
1386 return mask;
1387 }
1388
1389 /* The logical port number of a LAG is equal to the lowest numbered physical
1390 * port ID present in that LAG. It may change if that port ever leaves the LAG.
1391 */
ocelot_bond_get_id(struct ocelot * ocelot,struct net_device * bond)1392 int ocelot_bond_get_id(struct ocelot *ocelot, struct net_device *bond)
1393 {
1394 int bond_mask = ocelot_get_bond_mask(ocelot, bond);
1395
1396 if (!bond_mask)
1397 return -ENOENT;
1398
1399 return __ffs(bond_mask);
1400 }
1401 EXPORT_SYMBOL_GPL(ocelot_bond_get_id);
1402
1403 /* Returns the mask of user ports assigned to this DSA tag_8021q CPU port.
1404 * Note that when CPU ports are in a LAG, the user ports are assigned to the
1405 * 'primary' CPU port, the one whose physical port number gives the logical
1406 * port number of the LAG.
1407 *
1408 * We leave PGID_SRC poorly configured for the 'secondary' CPU port in the LAG
1409 * (to which no user port is assigned), but it appears that forwarding from
1410 * this secondary CPU port looks at the PGID_SRC associated with the logical
1411 * port ID that it's assigned to, which *is* configured properly.
1412 */
ocelot_dsa_8021q_cpu_assigned_ports(struct ocelot * ocelot,struct ocelot_port * cpu)1413 static u32 ocelot_dsa_8021q_cpu_assigned_ports(struct ocelot *ocelot,
1414 struct ocelot_port *cpu)
1415 {
1416 u32 mask = 0;
1417 int port;
1418
1419 for (port = 0; port < ocelot->num_phys_ports; port++) {
1420 struct ocelot_port *ocelot_port = ocelot->ports[port];
1421
1422 if (!ocelot_port)
1423 continue;
1424
1425 if (ocelot_port->dsa_8021q_cpu == cpu)
1426 mask |= BIT(port);
1427 }
1428
1429 if (cpu->bond)
1430 mask &= ~ocelot_get_bond_mask(ocelot, cpu->bond);
1431
1432 return mask;
1433 }
1434
1435 /* Returns the DSA tag_8021q CPU port that the given port is assigned to,
1436 * or the bit mask of CPU ports if said CPU port is in a LAG.
1437 */
ocelot_port_assigned_dsa_8021q_cpu_mask(struct ocelot * ocelot,int port)1438 u32 ocelot_port_assigned_dsa_8021q_cpu_mask(struct ocelot *ocelot, int port)
1439 {
1440 struct ocelot_port *ocelot_port = ocelot->ports[port];
1441 struct ocelot_port *cpu_port = ocelot_port->dsa_8021q_cpu;
1442
1443 if (!cpu_port)
1444 return 0;
1445
1446 if (cpu_port->bond)
1447 return ocelot_get_bond_mask(ocelot, cpu_port->bond);
1448
1449 return BIT(cpu_port->index);
1450 }
1451 EXPORT_SYMBOL_GPL(ocelot_port_assigned_dsa_8021q_cpu_mask);
1452
ocelot_get_bridge_fwd_mask(struct ocelot * ocelot,int src_port)1453 u32 ocelot_get_bridge_fwd_mask(struct ocelot *ocelot, int src_port)
1454 {
1455 struct ocelot_port *ocelot_port = ocelot->ports[src_port];
1456 const struct net_device *bridge;
1457 u32 mask = 0;
1458 int port;
1459
1460 if (!ocelot_port || ocelot_port->stp_state != BR_STATE_FORWARDING)
1461 return 0;
1462
1463 bridge = ocelot_port->bridge;
1464 if (!bridge)
1465 return 0;
1466
1467 for (port = 0; port < ocelot->num_phys_ports; port++) {
1468 ocelot_port = ocelot->ports[port];
1469
1470 if (!ocelot_port)
1471 continue;
1472
1473 if (ocelot_port->stp_state == BR_STATE_FORWARDING &&
1474 ocelot_port->bridge == bridge)
1475 mask |= BIT(port);
1476 }
1477
1478 return mask;
1479 }
1480 EXPORT_SYMBOL_GPL(ocelot_get_bridge_fwd_mask);
1481
ocelot_apply_bridge_fwd_mask(struct ocelot * ocelot,bool joining)1482 static void ocelot_apply_bridge_fwd_mask(struct ocelot *ocelot, bool joining)
1483 {
1484 int port;
1485
1486 lockdep_assert_held(&ocelot->fwd_domain_lock);
1487
1488 /* If cut-through forwarding is supported, update the masks before a
1489 * port joins the forwarding domain, to avoid potential underruns if it
1490 * has the highest speed from the new domain.
1491 */
1492 if (joining && ocelot->ops->cut_through_fwd)
1493 ocelot->ops->cut_through_fwd(ocelot);
1494
1495 /* Apply FWD mask. The loop is needed to add/remove the current port as
1496 * a source for the other ports.
1497 */
1498 for (port = 0; port < ocelot->num_phys_ports; port++) {
1499 struct ocelot_port *ocelot_port = ocelot->ports[port];
1500 unsigned long mask;
1501
1502 if (!ocelot_port) {
1503 /* Unused ports can't send anywhere */
1504 mask = 0;
1505 } else if (ocelot_port->is_dsa_8021q_cpu) {
1506 /* The DSA tag_8021q CPU ports need to be able to
1507 * forward packets to all ports assigned to them.
1508 */
1509 mask = ocelot_dsa_8021q_cpu_assigned_ports(ocelot,
1510 ocelot_port);
1511 } else if (ocelot_port->bridge) {
1512 struct net_device *bond = ocelot_port->bond;
1513
1514 mask = ocelot_get_bridge_fwd_mask(ocelot, port);
1515 mask &= ~BIT(port);
1516
1517 mask |= ocelot_port_assigned_dsa_8021q_cpu_mask(ocelot,
1518 port);
1519
1520 if (bond)
1521 mask &= ~ocelot_get_bond_mask(ocelot, bond);
1522 } else {
1523 /* Standalone ports forward only to DSA tag_8021q CPU
1524 * ports (if those exist), or to the hardware CPU port
1525 * module otherwise.
1526 */
1527 mask = ocelot_port_assigned_dsa_8021q_cpu_mask(ocelot,
1528 port);
1529 }
1530
1531 ocelot_write_rix(ocelot, mask, ANA_PGID_PGID, PGID_SRC + port);
1532 }
1533
1534 /* If cut-through forwarding is supported and a port is leaving, there
1535 * is a chance that cut-through was disabled on the other ports due to
1536 * the port which is leaving (it has a higher link speed). We need to
1537 * update the cut-through masks of the remaining ports no earlier than
1538 * after the port has left, to prevent underruns from happening between
1539 * the cut-through update and the forwarding domain update.
1540 */
1541 if (!joining && ocelot->ops->cut_through_fwd)
1542 ocelot->ops->cut_through_fwd(ocelot);
1543 }
1544
1545 /* Update PGID_CPU which is the destination port mask used for whitelisting
1546 * unicast addresses filtered towards the host. In the normal and NPI modes,
1547 * this points to the analyzer entry for the CPU port module, while in DSA
1548 * tag_8021q mode, it is a bit mask of all active CPU ports.
1549 * PGID_SRC will take care of forwarding a packet from one user port to
1550 * no more than a single CPU port.
1551 */
ocelot_update_pgid_cpu(struct ocelot * ocelot)1552 static void ocelot_update_pgid_cpu(struct ocelot *ocelot)
1553 {
1554 int pgid_cpu = 0;
1555 int port;
1556
1557 for (port = 0; port < ocelot->num_phys_ports; port++) {
1558 struct ocelot_port *ocelot_port = ocelot->ports[port];
1559
1560 if (!ocelot_port || !ocelot_port->is_dsa_8021q_cpu)
1561 continue;
1562
1563 pgid_cpu |= BIT(port);
1564 }
1565
1566 if (!pgid_cpu)
1567 pgid_cpu = BIT(ocelot->num_phys_ports);
1568
1569 ocelot_write_rix(ocelot, pgid_cpu, ANA_PGID_PGID, PGID_CPU);
1570 }
1571
ocelot_port_setup_dsa_8021q_cpu(struct ocelot * ocelot,int cpu)1572 void ocelot_port_setup_dsa_8021q_cpu(struct ocelot *ocelot, int cpu)
1573 {
1574 struct ocelot_port *cpu_port = ocelot->ports[cpu];
1575 u16 vid;
1576
1577 mutex_lock(&ocelot->fwd_domain_lock);
1578
1579 cpu_port->is_dsa_8021q_cpu = true;
1580
1581 for (vid = OCELOT_RSV_VLAN_RANGE_START; vid < VLAN_N_VID; vid++)
1582 ocelot_vlan_member_add(ocelot, cpu, vid, true);
1583
1584 ocelot_update_pgid_cpu(ocelot);
1585
1586 mutex_unlock(&ocelot->fwd_domain_lock);
1587 }
1588 EXPORT_SYMBOL_GPL(ocelot_port_setup_dsa_8021q_cpu);
1589
ocelot_port_teardown_dsa_8021q_cpu(struct ocelot * ocelot,int cpu)1590 void ocelot_port_teardown_dsa_8021q_cpu(struct ocelot *ocelot, int cpu)
1591 {
1592 struct ocelot_port *cpu_port = ocelot->ports[cpu];
1593 u16 vid;
1594
1595 mutex_lock(&ocelot->fwd_domain_lock);
1596
1597 cpu_port->is_dsa_8021q_cpu = false;
1598
1599 for (vid = OCELOT_RSV_VLAN_RANGE_START; vid < VLAN_N_VID; vid++)
1600 ocelot_vlan_member_del(ocelot, cpu_port->index, vid);
1601
1602 ocelot_update_pgid_cpu(ocelot);
1603
1604 mutex_unlock(&ocelot->fwd_domain_lock);
1605 }
1606 EXPORT_SYMBOL_GPL(ocelot_port_teardown_dsa_8021q_cpu);
1607
ocelot_port_assign_dsa_8021q_cpu(struct ocelot * ocelot,int port,int cpu)1608 void ocelot_port_assign_dsa_8021q_cpu(struct ocelot *ocelot, int port,
1609 int cpu)
1610 {
1611 struct ocelot_port *cpu_port = ocelot->ports[cpu];
1612
1613 mutex_lock(&ocelot->fwd_domain_lock);
1614
1615 ocelot->ports[port]->dsa_8021q_cpu = cpu_port;
1616 ocelot_apply_bridge_fwd_mask(ocelot, true);
1617
1618 mutex_unlock(&ocelot->fwd_domain_lock);
1619 }
1620 EXPORT_SYMBOL_GPL(ocelot_port_assign_dsa_8021q_cpu);
1621
ocelot_port_unassign_dsa_8021q_cpu(struct ocelot * ocelot,int port)1622 void ocelot_port_unassign_dsa_8021q_cpu(struct ocelot *ocelot, int port)
1623 {
1624 mutex_lock(&ocelot->fwd_domain_lock);
1625
1626 ocelot->ports[port]->dsa_8021q_cpu = NULL;
1627 ocelot_apply_bridge_fwd_mask(ocelot, true);
1628
1629 mutex_unlock(&ocelot->fwd_domain_lock);
1630 }
1631 EXPORT_SYMBOL_GPL(ocelot_port_unassign_dsa_8021q_cpu);
1632
ocelot_bridge_stp_state_set(struct ocelot * ocelot,int port,u8 state)1633 void ocelot_bridge_stp_state_set(struct ocelot *ocelot, int port, u8 state)
1634 {
1635 struct ocelot_port *ocelot_port = ocelot->ports[port];
1636 u32 learn_ena = 0;
1637
1638 mutex_lock(&ocelot->fwd_domain_lock);
1639
1640 ocelot_port->stp_state = state;
1641
1642 if ((state == BR_STATE_LEARNING || state == BR_STATE_FORWARDING) &&
1643 ocelot_port->learn_ena)
1644 learn_ena = ANA_PORT_PORT_CFG_LEARN_ENA;
1645
1646 ocelot_rmw_gix(ocelot, learn_ena, ANA_PORT_PORT_CFG_LEARN_ENA,
1647 ANA_PORT_PORT_CFG, port);
1648
1649 ocelot_apply_bridge_fwd_mask(ocelot, state == BR_STATE_FORWARDING);
1650
1651 mutex_unlock(&ocelot->fwd_domain_lock);
1652 }
1653 EXPORT_SYMBOL(ocelot_bridge_stp_state_set);
1654
ocelot_set_ageing_time(struct ocelot * ocelot,unsigned int msecs)1655 void ocelot_set_ageing_time(struct ocelot *ocelot, unsigned int msecs)
1656 {
1657 unsigned int age_period = ANA_AUTOAGE_AGE_PERIOD(msecs / 2000);
1658
1659 /* Setting AGE_PERIOD to zero effectively disables automatic aging,
1660 * which is clearly not what our intention is. So avoid that.
1661 */
1662 if (!age_period)
1663 age_period = 1;
1664
1665 ocelot_rmw(ocelot, age_period, ANA_AUTOAGE_AGE_PERIOD_M, ANA_AUTOAGE);
1666 }
1667 EXPORT_SYMBOL(ocelot_set_ageing_time);
1668
ocelot_multicast_get(struct ocelot * ocelot,const unsigned char * addr,u16 vid)1669 static struct ocelot_multicast *ocelot_multicast_get(struct ocelot *ocelot,
1670 const unsigned char *addr,
1671 u16 vid)
1672 {
1673 struct ocelot_multicast *mc;
1674
1675 list_for_each_entry(mc, &ocelot->multicast, list) {
1676 if (ether_addr_equal(mc->addr, addr) && mc->vid == vid)
1677 return mc;
1678 }
1679
1680 return NULL;
1681 }
1682
ocelot_classify_mdb(const unsigned char * addr)1683 static enum macaccess_entry_type ocelot_classify_mdb(const unsigned char *addr)
1684 {
1685 if (addr[0] == 0x01 && addr[1] == 0x00 && addr[2] == 0x5e)
1686 return ENTRYTYPE_MACv4;
1687 if (addr[0] == 0x33 && addr[1] == 0x33)
1688 return ENTRYTYPE_MACv6;
1689 return ENTRYTYPE_LOCKED;
1690 }
1691
ocelot_pgid_alloc(struct ocelot * ocelot,int index,unsigned long ports)1692 static struct ocelot_pgid *ocelot_pgid_alloc(struct ocelot *ocelot, int index,
1693 unsigned long ports)
1694 {
1695 struct ocelot_pgid *pgid;
1696
1697 pgid = kzalloc(sizeof(*pgid), GFP_KERNEL);
1698 if (!pgid)
1699 return ERR_PTR(-ENOMEM);
1700
1701 pgid->ports = ports;
1702 pgid->index = index;
1703 refcount_set(&pgid->refcount, 1);
1704 list_add_tail(&pgid->list, &ocelot->pgids);
1705
1706 return pgid;
1707 }
1708
ocelot_pgid_free(struct ocelot * ocelot,struct ocelot_pgid * pgid)1709 static void ocelot_pgid_free(struct ocelot *ocelot, struct ocelot_pgid *pgid)
1710 {
1711 if (!refcount_dec_and_test(&pgid->refcount))
1712 return;
1713
1714 list_del(&pgid->list);
1715 kfree(pgid);
1716 }
1717
ocelot_mdb_get_pgid(struct ocelot * ocelot,const struct ocelot_multicast * mc)1718 static struct ocelot_pgid *ocelot_mdb_get_pgid(struct ocelot *ocelot,
1719 const struct ocelot_multicast *mc)
1720 {
1721 struct ocelot_pgid *pgid;
1722 int index;
1723
1724 /* According to VSC7514 datasheet 3.9.1.5 IPv4 Multicast Entries and
1725 * 3.9.1.6 IPv6 Multicast Entries, "Instead of a lookup in the
1726 * destination mask table (PGID), the destination set is programmed as
1727 * part of the entry MAC address.", and the DEST_IDX is set to 0.
1728 */
1729 if (mc->entry_type == ENTRYTYPE_MACv4 ||
1730 mc->entry_type == ENTRYTYPE_MACv6)
1731 return ocelot_pgid_alloc(ocelot, 0, mc->ports);
1732
1733 list_for_each_entry(pgid, &ocelot->pgids, list) {
1734 /* When searching for a nonreserved multicast PGID, ignore the
1735 * dummy PGID of zero that we have for MACv4/MACv6 entries
1736 */
1737 if (pgid->index && pgid->ports == mc->ports) {
1738 refcount_inc(&pgid->refcount);
1739 return pgid;
1740 }
1741 }
1742
1743 /* Search for a free index in the nonreserved multicast PGID area */
1744 for_each_nonreserved_multicast_dest_pgid(ocelot, index) {
1745 bool used = false;
1746
1747 list_for_each_entry(pgid, &ocelot->pgids, list) {
1748 if (pgid->index == index) {
1749 used = true;
1750 break;
1751 }
1752 }
1753
1754 if (!used)
1755 return ocelot_pgid_alloc(ocelot, index, mc->ports);
1756 }
1757
1758 return ERR_PTR(-ENOSPC);
1759 }
1760
ocelot_encode_ports_to_mdb(unsigned char * addr,struct ocelot_multicast * mc)1761 static void ocelot_encode_ports_to_mdb(unsigned char *addr,
1762 struct ocelot_multicast *mc)
1763 {
1764 ether_addr_copy(addr, mc->addr);
1765
1766 if (mc->entry_type == ENTRYTYPE_MACv4) {
1767 addr[0] = 0;
1768 addr[1] = mc->ports >> 8;
1769 addr[2] = mc->ports & 0xff;
1770 } else if (mc->entry_type == ENTRYTYPE_MACv6) {
1771 addr[0] = mc->ports >> 8;
1772 addr[1] = mc->ports & 0xff;
1773 }
1774 }
1775
ocelot_port_mdb_add(struct ocelot * ocelot,int port,const struct switchdev_obj_port_mdb * mdb,const struct net_device * bridge)1776 int ocelot_port_mdb_add(struct ocelot *ocelot, int port,
1777 const struct switchdev_obj_port_mdb *mdb,
1778 const struct net_device *bridge)
1779 {
1780 unsigned char addr[ETH_ALEN];
1781 struct ocelot_multicast *mc;
1782 struct ocelot_pgid *pgid;
1783 u16 vid = mdb->vid;
1784
1785 if (!vid)
1786 vid = ocelot_vlan_unaware_pvid(ocelot, bridge);
1787
1788 mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
1789 if (!mc) {
1790 /* New entry */
1791 mc = devm_kzalloc(ocelot->dev, sizeof(*mc), GFP_KERNEL);
1792 if (!mc)
1793 return -ENOMEM;
1794
1795 mc->entry_type = ocelot_classify_mdb(mdb->addr);
1796 ether_addr_copy(mc->addr, mdb->addr);
1797 mc->vid = vid;
1798
1799 list_add_tail(&mc->list, &ocelot->multicast);
1800 } else {
1801 /* Existing entry. Clean up the current port mask from
1802 * hardware now, because we'll be modifying it.
1803 */
1804 ocelot_pgid_free(ocelot, mc->pgid);
1805 ocelot_encode_ports_to_mdb(addr, mc);
1806 ocelot_mact_forget(ocelot, addr, vid);
1807 }
1808
1809 mc->ports |= BIT(port);
1810
1811 pgid = ocelot_mdb_get_pgid(ocelot, mc);
1812 if (IS_ERR(pgid)) {
1813 dev_err(ocelot->dev,
1814 "Cannot allocate PGID for mdb %pM vid %d\n",
1815 mc->addr, mc->vid);
1816 devm_kfree(ocelot->dev, mc);
1817 return PTR_ERR(pgid);
1818 }
1819 mc->pgid = pgid;
1820
1821 ocelot_encode_ports_to_mdb(addr, mc);
1822
1823 if (mc->entry_type != ENTRYTYPE_MACv4 &&
1824 mc->entry_type != ENTRYTYPE_MACv6)
1825 ocelot_write_rix(ocelot, pgid->ports, ANA_PGID_PGID,
1826 pgid->index);
1827
1828 return ocelot_mact_learn(ocelot, pgid->index, addr, vid,
1829 mc->entry_type);
1830 }
1831 EXPORT_SYMBOL(ocelot_port_mdb_add);
1832
ocelot_port_mdb_del(struct ocelot * ocelot,int port,const struct switchdev_obj_port_mdb * mdb,const struct net_device * bridge)1833 int ocelot_port_mdb_del(struct ocelot *ocelot, int port,
1834 const struct switchdev_obj_port_mdb *mdb,
1835 const struct net_device *bridge)
1836 {
1837 unsigned char addr[ETH_ALEN];
1838 struct ocelot_multicast *mc;
1839 struct ocelot_pgid *pgid;
1840 u16 vid = mdb->vid;
1841
1842 if (!vid)
1843 vid = ocelot_vlan_unaware_pvid(ocelot, bridge);
1844
1845 mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
1846 if (!mc)
1847 return -ENOENT;
1848
1849 ocelot_encode_ports_to_mdb(addr, mc);
1850 ocelot_mact_forget(ocelot, addr, vid);
1851
1852 ocelot_pgid_free(ocelot, mc->pgid);
1853 mc->ports &= ~BIT(port);
1854 if (!mc->ports) {
1855 list_del(&mc->list);
1856 devm_kfree(ocelot->dev, mc);
1857 return 0;
1858 }
1859
1860 /* We have a PGID with fewer ports now */
1861 pgid = ocelot_mdb_get_pgid(ocelot, mc);
1862 if (IS_ERR(pgid))
1863 return PTR_ERR(pgid);
1864 mc->pgid = pgid;
1865
1866 ocelot_encode_ports_to_mdb(addr, mc);
1867
1868 if (mc->entry_type != ENTRYTYPE_MACv4 &&
1869 mc->entry_type != ENTRYTYPE_MACv6)
1870 ocelot_write_rix(ocelot, pgid->ports, ANA_PGID_PGID,
1871 pgid->index);
1872
1873 return ocelot_mact_learn(ocelot, pgid->index, addr, vid,
1874 mc->entry_type);
1875 }
1876 EXPORT_SYMBOL(ocelot_port_mdb_del);
1877
ocelot_port_bridge_join(struct ocelot * ocelot,int port,struct net_device * bridge,int bridge_num,struct netlink_ext_ack * extack)1878 int ocelot_port_bridge_join(struct ocelot *ocelot, int port,
1879 struct net_device *bridge, int bridge_num,
1880 struct netlink_ext_ack *extack)
1881 {
1882 struct ocelot_port *ocelot_port = ocelot->ports[port];
1883 int err;
1884
1885 err = ocelot_single_vlan_aware_bridge(ocelot, extack);
1886 if (err)
1887 return err;
1888
1889 mutex_lock(&ocelot->fwd_domain_lock);
1890
1891 ocelot_port->bridge = bridge;
1892 ocelot_port->bridge_num = bridge_num;
1893
1894 ocelot_apply_bridge_fwd_mask(ocelot, true);
1895
1896 mutex_unlock(&ocelot->fwd_domain_lock);
1897
1898 if (br_vlan_enabled(bridge))
1899 return 0;
1900
1901 return ocelot_add_vlan_unaware_pvid(ocelot, port, bridge);
1902 }
1903 EXPORT_SYMBOL(ocelot_port_bridge_join);
1904
ocelot_port_bridge_leave(struct ocelot * ocelot,int port,struct net_device * bridge)1905 void ocelot_port_bridge_leave(struct ocelot *ocelot, int port,
1906 struct net_device *bridge)
1907 {
1908 struct ocelot_port *ocelot_port = ocelot->ports[port];
1909
1910 mutex_lock(&ocelot->fwd_domain_lock);
1911
1912 if (!br_vlan_enabled(bridge))
1913 ocelot_del_vlan_unaware_pvid(ocelot, port, bridge);
1914
1915 ocelot_port->bridge = NULL;
1916 ocelot_port->bridge_num = -1;
1917
1918 ocelot_port_set_pvid(ocelot, port, NULL);
1919 ocelot_port_manage_port_tag(ocelot, port);
1920 ocelot_apply_bridge_fwd_mask(ocelot, false);
1921
1922 mutex_unlock(&ocelot->fwd_domain_lock);
1923 }
1924 EXPORT_SYMBOL(ocelot_port_bridge_leave);
1925
ocelot_set_aggr_pgids(struct ocelot * ocelot)1926 static void ocelot_set_aggr_pgids(struct ocelot *ocelot)
1927 {
1928 unsigned long visited = GENMASK(ocelot->num_phys_ports - 1, 0);
1929 int i, port, lag;
1930
1931 /* Reset destination and aggregation PGIDS */
1932 for_each_unicast_dest_pgid(ocelot, port)
1933 ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port);
1934
1935 for_each_aggr_pgid(ocelot, i)
1936 ocelot_write_rix(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0),
1937 ANA_PGID_PGID, i);
1938
1939 /* The visited ports bitmask holds the list of ports offloading any
1940 * bonding interface. Initially we mark all these ports as unvisited,
1941 * then every time we visit a port in this bitmask, we know that it is
1942 * the lowest numbered port, i.e. the one whose logical ID == physical
1943 * port ID == LAG ID. So we mark as visited all further ports in the
1944 * bitmask that are offloading the same bonding interface. This way,
1945 * we set up the aggregation PGIDs only once per bonding interface.
1946 */
1947 for (port = 0; port < ocelot->num_phys_ports; port++) {
1948 struct ocelot_port *ocelot_port = ocelot->ports[port];
1949
1950 if (!ocelot_port || !ocelot_port->bond)
1951 continue;
1952
1953 visited &= ~BIT(port);
1954 }
1955
1956 /* Now, set PGIDs for each active LAG */
1957 for (lag = 0; lag < ocelot->num_phys_ports; lag++) {
1958 struct net_device *bond = ocelot->ports[lag]->bond;
1959 int num_active_ports = 0;
1960 unsigned long bond_mask;
1961 u8 aggr_idx[16];
1962
1963 if (!bond || (visited & BIT(lag)))
1964 continue;
1965
1966 bond_mask = ocelot_get_bond_mask(ocelot, bond);
1967
1968 for_each_set_bit(port, &bond_mask, ocelot->num_phys_ports) {
1969 struct ocelot_port *ocelot_port = ocelot->ports[port];
1970
1971 // Destination mask
1972 ocelot_write_rix(ocelot, bond_mask,
1973 ANA_PGID_PGID, port);
1974
1975 if (ocelot_port->lag_tx_active)
1976 aggr_idx[num_active_ports++] = port;
1977 }
1978
1979 for_each_aggr_pgid(ocelot, i) {
1980 u32 ac;
1981
1982 ac = ocelot_read_rix(ocelot, ANA_PGID_PGID, i);
1983 ac &= ~bond_mask;
1984 /* Don't do division by zero if there was no active
1985 * port. Just make all aggregation codes zero.
1986 */
1987 if (num_active_ports)
1988 ac |= BIT(aggr_idx[i % num_active_ports]);
1989 ocelot_write_rix(ocelot, ac, ANA_PGID_PGID, i);
1990 }
1991
1992 /* Mark all ports in the same LAG as visited to avoid applying
1993 * the same config again.
1994 */
1995 for (port = lag; port < ocelot->num_phys_ports; port++) {
1996 struct ocelot_port *ocelot_port = ocelot->ports[port];
1997
1998 if (!ocelot_port)
1999 continue;
2000
2001 if (ocelot_port->bond == bond)
2002 visited |= BIT(port);
2003 }
2004 }
2005 }
2006
2007 /* When offloading a bonding interface, the switch ports configured under the
2008 * same bond must have the same logical port ID, equal to the physical port ID
2009 * of the lowest numbered physical port in that bond. Otherwise, in standalone/
2010 * bridged mode, each port has a logical port ID equal to its physical port ID.
2011 */
ocelot_setup_logical_port_ids(struct ocelot * ocelot)2012 static void ocelot_setup_logical_port_ids(struct ocelot *ocelot)
2013 {
2014 int port;
2015
2016 for (port = 0; port < ocelot->num_phys_ports; port++) {
2017 struct ocelot_port *ocelot_port = ocelot->ports[port];
2018 struct net_device *bond;
2019
2020 if (!ocelot_port)
2021 continue;
2022
2023 bond = ocelot_port->bond;
2024 if (bond) {
2025 int lag = ocelot_bond_get_id(ocelot, bond);
2026
2027 ocelot_rmw_gix(ocelot,
2028 ANA_PORT_PORT_CFG_PORTID_VAL(lag),
2029 ANA_PORT_PORT_CFG_PORTID_VAL_M,
2030 ANA_PORT_PORT_CFG, port);
2031 } else {
2032 ocelot_rmw_gix(ocelot,
2033 ANA_PORT_PORT_CFG_PORTID_VAL(port),
2034 ANA_PORT_PORT_CFG_PORTID_VAL_M,
2035 ANA_PORT_PORT_CFG, port);
2036 }
2037 }
2038 }
2039
ocelot_migrate_mc(struct ocelot * ocelot,struct ocelot_multicast * mc,unsigned long from_mask,unsigned long to_mask)2040 static int ocelot_migrate_mc(struct ocelot *ocelot, struct ocelot_multicast *mc,
2041 unsigned long from_mask, unsigned long to_mask)
2042 {
2043 unsigned char addr[ETH_ALEN];
2044 struct ocelot_pgid *pgid;
2045 u16 vid = mc->vid;
2046
2047 dev_dbg(ocelot->dev,
2048 "Migrating multicast %pM vid %d from port mask 0x%lx to 0x%lx\n",
2049 mc->addr, mc->vid, from_mask, to_mask);
2050
2051 /* First clean up the current port mask from hardware, because
2052 * we'll be modifying it.
2053 */
2054 ocelot_pgid_free(ocelot, mc->pgid);
2055 ocelot_encode_ports_to_mdb(addr, mc);
2056 ocelot_mact_forget(ocelot, addr, vid);
2057
2058 mc->ports &= ~from_mask;
2059 mc->ports |= to_mask;
2060
2061 pgid = ocelot_mdb_get_pgid(ocelot, mc);
2062 if (IS_ERR(pgid)) {
2063 dev_err(ocelot->dev,
2064 "Cannot allocate PGID for mdb %pM vid %d\n",
2065 mc->addr, mc->vid);
2066 devm_kfree(ocelot->dev, mc);
2067 return PTR_ERR(pgid);
2068 }
2069 mc->pgid = pgid;
2070
2071 ocelot_encode_ports_to_mdb(addr, mc);
2072
2073 if (mc->entry_type != ENTRYTYPE_MACv4 &&
2074 mc->entry_type != ENTRYTYPE_MACv6)
2075 ocelot_write_rix(ocelot, pgid->ports, ANA_PGID_PGID,
2076 pgid->index);
2077
2078 return ocelot_mact_learn(ocelot, pgid->index, addr, vid,
2079 mc->entry_type);
2080 }
2081
ocelot_migrate_mdbs(struct ocelot * ocelot,unsigned long from_mask,unsigned long to_mask)2082 int ocelot_migrate_mdbs(struct ocelot *ocelot, unsigned long from_mask,
2083 unsigned long to_mask)
2084 {
2085 struct ocelot_multicast *mc;
2086 int err;
2087
2088 list_for_each_entry(mc, &ocelot->multicast, list) {
2089 if (!(mc->ports & from_mask))
2090 continue;
2091
2092 err = ocelot_migrate_mc(ocelot, mc, from_mask, to_mask);
2093 if (err)
2094 return err;
2095 }
2096
2097 return 0;
2098 }
2099 EXPORT_SYMBOL_GPL(ocelot_migrate_mdbs);
2100
2101 /* Documentation for PORTID_VAL says:
2102 * Logical port number for front port. If port is not a member of a LLAG,
2103 * then PORTID must be set to the physical port number.
2104 * If port is a member of a LLAG, then PORTID must be set to the common
2105 * PORTID_VAL used for all member ports of the LLAG.
2106 * The value must not exceed the number of physical ports on the device.
2107 *
2108 * This means we have little choice but to migrate FDB entries pointing towards
2109 * a logical port when that changes.
2110 */
ocelot_migrate_lag_fdbs(struct ocelot * ocelot,struct net_device * bond,int lag)2111 static void ocelot_migrate_lag_fdbs(struct ocelot *ocelot,
2112 struct net_device *bond,
2113 int lag)
2114 {
2115 struct ocelot_lag_fdb *fdb;
2116 int err;
2117
2118 lockdep_assert_held(&ocelot->fwd_domain_lock);
2119
2120 list_for_each_entry(fdb, &ocelot->lag_fdbs, list) {
2121 if (fdb->bond != bond)
2122 continue;
2123
2124 err = ocelot_mact_forget(ocelot, fdb->addr, fdb->vid);
2125 if (err) {
2126 dev_err(ocelot->dev,
2127 "failed to delete LAG %s FDB %pM vid %d: %pe\n",
2128 bond->name, fdb->addr, fdb->vid, ERR_PTR(err));
2129 }
2130
2131 err = ocelot_mact_learn(ocelot, lag, fdb->addr, fdb->vid,
2132 ENTRYTYPE_LOCKED);
2133 if (err) {
2134 dev_err(ocelot->dev,
2135 "failed to migrate LAG %s FDB %pM vid %d: %pe\n",
2136 bond->name, fdb->addr, fdb->vid, ERR_PTR(err));
2137 }
2138 }
2139 }
2140
ocelot_port_lag_join(struct ocelot * ocelot,int port,struct net_device * bond,struct netdev_lag_upper_info * info,struct netlink_ext_ack * extack)2141 int ocelot_port_lag_join(struct ocelot *ocelot, int port,
2142 struct net_device *bond,
2143 struct netdev_lag_upper_info *info,
2144 struct netlink_ext_ack *extack)
2145 {
2146 if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH) {
2147 NL_SET_ERR_MSG_MOD(extack,
2148 "Can only offload LAG using hash TX type");
2149 return -EOPNOTSUPP;
2150 }
2151
2152 mutex_lock(&ocelot->fwd_domain_lock);
2153
2154 ocelot->ports[port]->bond = bond;
2155
2156 ocelot_setup_logical_port_ids(ocelot);
2157 ocelot_apply_bridge_fwd_mask(ocelot, true);
2158 ocelot_set_aggr_pgids(ocelot);
2159
2160 mutex_unlock(&ocelot->fwd_domain_lock);
2161
2162 return 0;
2163 }
2164 EXPORT_SYMBOL(ocelot_port_lag_join);
2165
ocelot_port_lag_leave(struct ocelot * ocelot,int port,struct net_device * bond)2166 void ocelot_port_lag_leave(struct ocelot *ocelot, int port,
2167 struct net_device *bond)
2168 {
2169 int old_lag_id, new_lag_id;
2170
2171 mutex_lock(&ocelot->fwd_domain_lock);
2172
2173 old_lag_id = ocelot_bond_get_id(ocelot, bond);
2174
2175 ocelot->ports[port]->bond = NULL;
2176
2177 ocelot_setup_logical_port_ids(ocelot);
2178 ocelot_apply_bridge_fwd_mask(ocelot, false);
2179 ocelot_set_aggr_pgids(ocelot);
2180
2181 new_lag_id = ocelot_bond_get_id(ocelot, bond);
2182
2183 if (new_lag_id >= 0 && old_lag_id != new_lag_id)
2184 ocelot_migrate_lag_fdbs(ocelot, bond, new_lag_id);
2185
2186 mutex_unlock(&ocelot->fwd_domain_lock);
2187 }
2188 EXPORT_SYMBOL(ocelot_port_lag_leave);
2189
ocelot_port_lag_change(struct ocelot * ocelot,int port,bool lag_tx_active)2190 void ocelot_port_lag_change(struct ocelot *ocelot, int port, bool lag_tx_active)
2191 {
2192 struct ocelot_port *ocelot_port = ocelot->ports[port];
2193
2194 mutex_lock(&ocelot->fwd_domain_lock);
2195
2196 ocelot_port->lag_tx_active = lag_tx_active;
2197
2198 /* Rebalance the LAGs */
2199 ocelot_set_aggr_pgids(ocelot);
2200
2201 mutex_unlock(&ocelot->fwd_domain_lock);
2202 }
2203 EXPORT_SYMBOL(ocelot_port_lag_change);
2204
ocelot_lag_fdb_add(struct ocelot * ocelot,struct net_device * bond,const unsigned char * addr,u16 vid,const struct net_device * bridge)2205 int ocelot_lag_fdb_add(struct ocelot *ocelot, struct net_device *bond,
2206 const unsigned char *addr, u16 vid,
2207 const struct net_device *bridge)
2208 {
2209 struct ocelot_lag_fdb *fdb;
2210 int lag, err;
2211
2212 fdb = kzalloc(sizeof(*fdb), GFP_KERNEL);
2213 if (!fdb)
2214 return -ENOMEM;
2215
2216 mutex_lock(&ocelot->fwd_domain_lock);
2217
2218 if (!vid)
2219 vid = ocelot_vlan_unaware_pvid(ocelot, bridge);
2220
2221 ether_addr_copy(fdb->addr, addr);
2222 fdb->vid = vid;
2223 fdb->bond = bond;
2224
2225 lag = ocelot_bond_get_id(ocelot, bond);
2226
2227 err = ocelot_mact_learn(ocelot, lag, addr, vid, ENTRYTYPE_LOCKED);
2228 if (err) {
2229 mutex_unlock(&ocelot->fwd_domain_lock);
2230 kfree(fdb);
2231 return err;
2232 }
2233
2234 list_add_tail(&fdb->list, &ocelot->lag_fdbs);
2235 mutex_unlock(&ocelot->fwd_domain_lock);
2236
2237 return 0;
2238 }
2239 EXPORT_SYMBOL_GPL(ocelot_lag_fdb_add);
2240
ocelot_lag_fdb_del(struct ocelot * ocelot,struct net_device * bond,const unsigned char * addr,u16 vid,const struct net_device * bridge)2241 int ocelot_lag_fdb_del(struct ocelot *ocelot, struct net_device *bond,
2242 const unsigned char *addr, u16 vid,
2243 const struct net_device *bridge)
2244 {
2245 struct ocelot_lag_fdb *fdb, *tmp;
2246
2247 mutex_lock(&ocelot->fwd_domain_lock);
2248
2249 if (!vid)
2250 vid = ocelot_vlan_unaware_pvid(ocelot, bridge);
2251
2252 list_for_each_entry_safe(fdb, tmp, &ocelot->lag_fdbs, list) {
2253 if (!ether_addr_equal(fdb->addr, addr) || fdb->vid != vid ||
2254 fdb->bond != bond)
2255 continue;
2256
2257 ocelot_mact_forget(ocelot, addr, vid);
2258 list_del(&fdb->list);
2259 mutex_unlock(&ocelot->fwd_domain_lock);
2260 kfree(fdb);
2261
2262 return 0;
2263 }
2264
2265 mutex_unlock(&ocelot->fwd_domain_lock);
2266
2267 return -ENOENT;
2268 }
2269 EXPORT_SYMBOL_GPL(ocelot_lag_fdb_del);
2270
2271 /* Configure the maximum SDU (L2 payload) on RX to the value specified in @sdu.
2272 * The length of VLAN tags is accounted for automatically via DEV_MAC_TAGS_CFG.
2273 * In the special case that it's the NPI port that we're configuring, the
2274 * length of the tag and optional prefix needs to be accounted for privately,
2275 * in order to be able to sustain communication at the requested @sdu.
2276 */
ocelot_port_set_maxlen(struct ocelot * ocelot,int port,size_t sdu)2277 void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu)
2278 {
2279 struct ocelot_port *ocelot_port = ocelot->ports[port];
2280 int maxlen = sdu + ETH_HLEN + ETH_FCS_LEN;
2281 int pause_start, pause_stop;
2282 int atop, atop_tot;
2283
2284 if (port == ocelot->npi) {
2285 maxlen += OCELOT_TAG_LEN;
2286
2287 if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_SHORT)
2288 maxlen += OCELOT_SHORT_PREFIX_LEN;
2289 else if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_LONG)
2290 maxlen += OCELOT_LONG_PREFIX_LEN;
2291 }
2292
2293 ocelot_port_writel(ocelot_port, maxlen, DEV_MAC_MAXLEN_CFG);
2294
2295 /* Set Pause watermark hysteresis */
2296 pause_start = 6 * maxlen / OCELOT_BUFFER_CELL_SZ;
2297 pause_stop = 4 * maxlen / OCELOT_BUFFER_CELL_SZ;
2298 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_START,
2299 pause_start);
2300 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_STOP,
2301 pause_stop);
2302
2303 /* Tail dropping watermarks */
2304 atop_tot = (ocelot->packet_buffer_size - 9 * maxlen) /
2305 OCELOT_BUFFER_CELL_SZ;
2306 atop = (9 * maxlen) / OCELOT_BUFFER_CELL_SZ;
2307 ocelot_write_rix(ocelot, ocelot->ops->wm_enc(atop), SYS_ATOP, port);
2308 ocelot_write(ocelot, ocelot->ops->wm_enc(atop_tot), SYS_ATOP_TOT_CFG);
2309 }
2310 EXPORT_SYMBOL(ocelot_port_set_maxlen);
2311
ocelot_get_max_mtu(struct ocelot * ocelot,int port)2312 int ocelot_get_max_mtu(struct ocelot *ocelot, int port)
2313 {
2314 int max_mtu = 65535 - ETH_HLEN - ETH_FCS_LEN;
2315
2316 if (port == ocelot->npi) {
2317 max_mtu -= OCELOT_TAG_LEN;
2318
2319 if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_SHORT)
2320 max_mtu -= OCELOT_SHORT_PREFIX_LEN;
2321 else if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_LONG)
2322 max_mtu -= OCELOT_LONG_PREFIX_LEN;
2323 }
2324
2325 return max_mtu;
2326 }
2327 EXPORT_SYMBOL(ocelot_get_max_mtu);
2328
ocelot_port_set_learning(struct ocelot * ocelot,int port,bool enabled)2329 static void ocelot_port_set_learning(struct ocelot *ocelot, int port,
2330 bool enabled)
2331 {
2332 struct ocelot_port *ocelot_port = ocelot->ports[port];
2333 u32 val = 0;
2334
2335 if (enabled)
2336 val = ANA_PORT_PORT_CFG_LEARN_ENA;
2337
2338 ocelot_rmw_gix(ocelot, val, ANA_PORT_PORT_CFG_LEARN_ENA,
2339 ANA_PORT_PORT_CFG, port);
2340
2341 ocelot_port->learn_ena = enabled;
2342 }
2343
ocelot_port_set_ucast_flood(struct ocelot * ocelot,int port,bool enabled)2344 static void ocelot_port_set_ucast_flood(struct ocelot *ocelot, int port,
2345 bool enabled)
2346 {
2347 u32 val = 0;
2348
2349 if (enabled)
2350 val = BIT(port);
2351
2352 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_UC);
2353 }
2354
ocelot_port_set_mcast_flood(struct ocelot * ocelot,int port,bool enabled)2355 static void ocelot_port_set_mcast_flood(struct ocelot *ocelot, int port,
2356 bool enabled)
2357 {
2358 u32 val = 0;
2359
2360 if (enabled)
2361 val = BIT(port);
2362
2363 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MC);
2364 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MCIPV4);
2365 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MCIPV6);
2366 }
2367
ocelot_port_set_bcast_flood(struct ocelot * ocelot,int port,bool enabled)2368 static void ocelot_port_set_bcast_flood(struct ocelot *ocelot, int port,
2369 bool enabled)
2370 {
2371 u32 val = 0;
2372
2373 if (enabled)
2374 val = BIT(port);
2375
2376 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_BC);
2377 }
2378
ocelot_port_pre_bridge_flags(struct ocelot * ocelot,int port,struct switchdev_brport_flags flags)2379 int ocelot_port_pre_bridge_flags(struct ocelot *ocelot, int port,
2380 struct switchdev_brport_flags flags)
2381 {
2382 if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
2383 BR_BCAST_FLOOD))
2384 return -EINVAL;
2385
2386 return 0;
2387 }
2388 EXPORT_SYMBOL(ocelot_port_pre_bridge_flags);
2389
ocelot_port_bridge_flags(struct ocelot * ocelot,int port,struct switchdev_brport_flags flags)2390 void ocelot_port_bridge_flags(struct ocelot *ocelot, int port,
2391 struct switchdev_brport_flags flags)
2392 {
2393 if (flags.mask & BR_LEARNING)
2394 ocelot_port_set_learning(ocelot, port,
2395 !!(flags.val & BR_LEARNING));
2396
2397 if (flags.mask & BR_FLOOD)
2398 ocelot_port_set_ucast_flood(ocelot, port,
2399 !!(flags.val & BR_FLOOD));
2400
2401 if (flags.mask & BR_MCAST_FLOOD)
2402 ocelot_port_set_mcast_flood(ocelot, port,
2403 !!(flags.val & BR_MCAST_FLOOD));
2404
2405 if (flags.mask & BR_BCAST_FLOOD)
2406 ocelot_port_set_bcast_flood(ocelot, port,
2407 !!(flags.val & BR_BCAST_FLOOD));
2408 }
2409 EXPORT_SYMBOL(ocelot_port_bridge_flags);
2410
ocelot_port_get_default_prio(struct ocelot * ocelot,int port)2411 int ocelot_port_get_default_prio(struct ocelot *ocelot, int port)
2412 {
2413 int val = ocelot_read_gix(ocelot, ANA_PORT_QOS_CFG, port);
2414
2415 return ANA_PORT_QOS_CFG_QOS_DEFAULT_VAL_X(val);
2416 }
2417 EXPORT_SYMBOL_GPL(ocelot_port_get_default_prio);
2418
ocelot_port_set_default_prio(struct ocelot * ocelot,int port,u8 prio)2419 int ocelot_port_set_default_prio(struct ocelot *ocelot, int port, u8 prio)
2420 {
2421 if (prio >= OCELOT_NUM_TC)
2422 return -ERANGE;
2423
2424 ocelot_rmw_gix(ocelot,
2425 ANA_PORT_QOS_CFG_QOS_DEFAULT_VAL(prio),
2426 ANA_PORT_QOS_CFG_QOS_DEFAULT_VAL_M,
2427 ANA_PORT_QOS_CFG,
2428 port);
2429
2430 return 0;
2431 }
2432 EXPORT_SYMBOL_GPL(ocelot_port_set_default_prio);
2433
ocelot_port_get_dscp_prio(struct ocelot * ocelot,int port,u8 dscp)2434 int ocelot_port_get_dscp_prio(struct ocelot *ocelot, int port, u8 dscp)
2435 {
2436 int qos_cfg = ocelot_read_gix(ocelot, ANA_PORT_QOS_CFG, port);
2437 int dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, dscp);
2438
2439 /* Return error if DSCP prioritization isn't enabled */
2440 if (!(qos_cfg & ANA_PORT_QOS_CFG_QOS_DSCP_ENA))
2441 return -EOPNOTSUPP;
2442
2443 if (qos_cfg & ANA_PORT_QOS_CFG_DSCP_TRANSLATE_ENA) {
2444 dscp = ANA_DSCP_CFG_DSCP_TRANSLATE_VAL_X(dscp_cfg);
2445 /* Re-read ANA_DSCP_CFG for the translated DSCP */
2446 dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, dscp);
2447 }
2448
2449 /* If the DSCP value is not trusted, the QoS classification falls back
2450 * to VLAN PCP or port-based default.
2451 */
2452 if (!(dscp_cfg & ANA_DSCP_CFG_DSCP_TRUST_ENA))
2453 return -EOPNOTSUPP;
2454
2455 return ANA_DSCP_CFG_QOS_DSCP_VAL_X(dscp_cfg);
2456 }
2457 EXPORT_SYMBOL_GPL(ocelot_port_get_dscp_prio);
2458
ocelot_port_add_dscp_prio(struct ocelot * ocelot,int port,u8 dscp,u8 prio)2459 int ocelot_port_add_dscp_prio(struct ocelot *ocelot, int port, u8 dscp, u8 prio)
2460 {
2461 int mask, val;
2462
2463 if (prio >= OCELOT_NUM_TC)
2464 return -ERANGE;
2465
2466 /* There is at least one app table priority (this one), so we need to
2467 * make sure DSCP prioritization is enabled on the port.
2468 * Also make sure DSCP translation is disabled
2469 * (dcbnl doesn't support it).
2470 */
2471 mask = ANA_PORT_QOS_CFG_QOS_DSCP_ENA |
2472 ANA_PORT_QOS_CFG_DSCP_TRANSLATE_ENA;
2473
2474 ocelot_rmw_gix(ocelot, ANA_PORT_QOS_CFG_QOS_DSCP_ENA, mask,
2475 ANA_PORT_QOS_CFG, port);
2476
2477 /* Trust this DSCP value and map it to the given QoS class */
2478 val = ANA_DSCP_CFG_DSCP_TRUST_ENA | ANA_DSCP_CFG_QOS_DSCP_VAL(prio);
2479
2480 ocelot_write_rix(ocelot, val, ANA_DSCP_CFG, dscp);
2481
2482 return 0;
2483 }
2484 EXPORT_SYMBOL_GPL(ocelot_port_add_dscp_prio);
2485
ocelot_port_del_dscp_prio(struct ocelot * ocelot,int port,u8 dscp,u8 prio)2486 int ocelot_port_del_dscp_prio(struct ocelot *ocelot, int port, u8 dscp, u8 prio)
2487 {
2488 int dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, dscp);
2489 int mask, i;
2490
2491 /* During a "dcb app replace" command, the new app table entry will be
2492 * added first, then the old one will be deleted. But the hardware only
2493 * supports one QoS class per DSCP value (duh), so if we blindly delete
2494 * the app table entry for this DSCP value, we end up deleting the
2495 * entry with the new priority. Avoid that by checking whether user
2496 * space wants to delete the priority which is currently configured, or
2497 * something else which is no longer current.
2498 */
2499 if (ANA_DSCP_CFG_QOS_DSCP_VAL_X(dscp_cfg) != prio)
2500 return 0;
2501
2502 /* Untrust this DSCP value */
2503 ocelot_write_rix(ocelot, 0, ANA_DSCP_CFG, dscp);
2504
2505 for (i = 0; i < 64; i++) {
2506 int dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, i);
2507
2508 /* There are still app table entries on the port, so we need to
2509 * keep DSCP enabled, nothing to do.
2510 */
2511 if (dscp_cfg & ANA_DSCP_CFG_DSCP_TRUST_ENA)
2512 return 0;
2513 }
2514
2515 /* Disable DSCP QoS classification if there isn't any trusted
2516 * DSCP value left.
2517 */
2518 mask = ANA_PORT_QOS_CFG_QOS_DSCP_ENA |
2519 ANA_PORT_QOS_CFG_DSCP_TRANSLATE_ENA;
2520
2521 ocelot_rmw_gix(ocelot, 0, mask, ANA_PORT_QOS_CFG, port);
2522
2523 return 0;
2524 }
2525 EXPORT_SYMBOL_GPL(ocelot_port_del_dscp_prio);
2526
ocelot_mirror_get(struct ocelot * ocelot,int to,struct netlink_ext_ack * extack)2527 struct ocelot_mirror *ocelot_mirror_get(struct ocelot *ocelot, int to,
2528 struct netlink_ext_ack *extack)
2529 {
2530 struct ocelot_mirror *m = ocelot->mirror;
2531
2532 if (m) {
2533 if (m->to != to) {
2534 NL_SET_ERR_MSG_MOD(extack,
2535 "Mirroring already configured towards different egress port");
2536 return ERR_PTR(-EBUSY);
2537 }
2538
2539 refcount_inc(&m->refcount);
2540 return m;
2541 }
2542
2543 m = kzalloc(sizeof(*m), GFP_KERNEL);
2544 if (!m)
2545 return ERR_PTR(-ENOMEM);
2546
2547 m->to = to;
2548 refcount_set(&m->refcount, 1);
2549 ocelot->mirror = m;
2550
2551 /* Program the mirror port to hardware */
2552 ocelot_write(ocelot, BIT(to), ANA_MIRRORPORTS);
2553
2554 return m;
2555 }
2556
ocelot_mirror_put(struct ocelot * ocelot)2557 void ocelot_mirror_put(struct ocelot *ocelot)
2558 {
2559 struct ocelot_mirror *m = ocelot->mirror;
2560
2561 if (!refcount_dec_and_test(&m->refcount))
2562 return;
2563
2564 ocelot_write(ocelot, 0, ANA_MIRRORPORTS);
2565 ocelot->mirror = NULL;
2566 kfree(m);
2567 }
2568
ocelot_port_mirror_add(struct ocelot * ocelot,int from,int to,bool ingress,struct netlink_ext_ack * extack)2569 int ocelot_port_mirror_add(struct ocelot *ocelot, int from, int to,
2570 bool ingress, struct netlink_ext_ack *extack)
2571 {
2572 struct ocelot_mirror *m = ocelot_mirror_get(ocelot, to, extack);
2573
2574 if (IS_ERR(m))
2575 return PTR_ERR(m);
2576
2577 if (ingress) {
2578 ocelot_rmw_gix(ocelot, ANA_PORT_PORT_CFG_SRC_MIRROR_ENA,
2579 ANA_PORT_PORT_CFG_SRC_MIRROR_ENA,
2580 ANA_PORT_PORT_CFG, from);
2581 } else {
2582 ocelot_rmw(ocelot, BIT(from), BIT(from),
2583 ANA_EMIRRORPORTS);
2584 }
2585
2586 return 0;
2587 }
2588 EXPORT_SYMBOL_GPL(ocelot_port_mirror_add);
2589
ocelot_port_mirror_del(struct ocelot * ocelot,int from,bool ingress)2590 void ocelot_port_mirror_del(struct ocelot *ocelot, int from, bool ingress)
2591 {
2592 if (ingress) {
2593 ocelot_rmw_gix(ocelot, 0, ANA_PORT_PORT_CFG_SRC_MIRROR_ENA,
2594 ANA_PORT_PORT_CFG, from);
2595 } else {
2596 ocelot_rmw(ocelot, 0, BIT(from), ANA_EMIRRORPORTS);
2597 }
2598
2599 ocelot_mirror_put(ocelot);
2600 }
2601 EXPORT_SYMBOL_GPL(ocelot_port_mirror_del);
2602
ocelot_init_port(struct ocelot * ocelot,int port)2603 void ocelot_init_port(struct ocelot *ocelot, int port)
2604 {
2605 struct ocelot_port *ocelot_port = ocelot->ports[port];
2606
2607 skb_queue_head_init(&ocelot_port->tx_skbs);
2608
2609 /* Basic L2 initialization */
2610
2611 /* Set MAC IFG Gaps
2612 * FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 0
2613 * !FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 5
2614 */
2615 ocelot_port_writel(ocelot_port, DEV_MAC_IFG_CFG_TX_IFG(5),
2616 DEV_MAC_IFG_CFG);
2617
2618 /* Load seed (0) and set MAC HDX late collision */
2619 ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67) |
2620 DEV_MAC_HDX_CFG_SEED_LOAD,
2621 DEV_MAC_HDX_CFG);
2622 mdelay(1);
2623 ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67),
2624 DEV_MAC_HDX_CFG);
2625
2626 /* Set Max Length and maximum tags allowed */
2627 ocelot_port_set_maxlen(ocelot, port, ETH_DATA_LEN);
2628 ocelot_port_writel(ocelot_port, DEV_MAC_TAGS_CFG_TAG_ID(ETH_P_8021AD) |
2629 DEV_MAC_TAGS_CFG_VLAN_AWR_ENA |
2630 DEV_MAC_TAGS_CFG_VLAN_DBL_AWR_ENA |
2631 DEV_MAC_TAGS_CFG_VLAN_LEN_AWR_ENA,
2632 DEV_MAC_TAGS_CFG);
2633
2634 /* Set SMAC of Pause frame (00:00:00:00:00:00) */
2635 ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_HIGH_CFG);
2636 ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_LOW_CFG);
2637
2638 /* Enable transmission of pause frames */
2639 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 1);
2640
2641 /* Drop frames with multicast source address */
2642 ocelot_rmw_gix(ocelot, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,
2643 ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,
2644 ANA_PORT_DROP_CFG, port);
2645
2646 /* Set default VLAN and tag type to 8021Q. */
2647 ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q),
2648 REW_PORT_VLAN_CFG_PORT_TPID_M,
2649 REW_PORT_VLAN_CFG, port);
2650
2651 /* Disable source address learning for standalone mode */
2652 ocelot_port_set_learning(ocelot, port, false);
2653
2654 /* Set the port's initial logical port ID value, enable receiving
2655 * frames on it, and configure the MAC address learning type to
2656 * automatic.
2657 */
2658 ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO |
2659 ANA_PORT_PORT_CFG_RECV_ENA |
2660 ANA_PORT_PORT_CFG_PORTID_VAL(port),
2661 ANA_PORT_PORT_CFG, port);
2662
2663 /* Enable vcap lookups */
2664 ocelot_vcap_enable(ocelot, port);
2665 }
2666 EXPORT_SYMBOL(ocelot_init_port);
2667
2668 /* Configure and enable the CPU port module, which is a set of queues
2669 * accessible through register MMIO, frame DMA or Ethernet (in case
2670 * NPI mode is used).
2671 */
ocelot_cpu_port_init(struct ocelot * ocelot)2672 static void ocelot_cpu_port_init(struct ocelot *ocelot)
2673 {
2674 int cpu = ocelot->num_phys_ports;
2675
2676 /* The unicast destination PGID for the CPU port module is unused */
2677 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, cpu);
2678 /* Instead set up a multicast destination PGID for traffic copied to
2679 * the CPU. Whitelisted MAC addresses like the port netdevice MAC
2680 * addresses will be copied to the CPU via this PGID.
2681 */
2682 ocelot_write_rix(ocelot, BIT(cpu), ANA_PGID_PGID, PGID_CPU);
2683 ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_RECV_ENA |
2684 ANA_PORT_PORT_CFG_PORTID_VAL(cpu),
2685 ANA_PORT_PORT_CFG, cpu);
2686
2687 /* Enable CPU port module */
2688 ocelot_fields_write(ocelot, cpu, QSYS_SWITCH_PORT_MODE_PORT_ENA, 1);
2689 /* CPU port Injection/Extraction configuration */
2690 ocelot_fields_write(ocelot, cpu, SYS_PORT_MODE_INCL_XTR_HDR,
2691 OCELOT_TAG_PREFIX_NONE);
2692 ocelot_fields_write(ocelot, cpu, SYS_PORT_MODE_INCL_INJ_HDR,
2693 OCELOT_TAG_PREFIX_NONE);
2694
2695 /* Configure the CPU port to be VLAN aware */
2696 ocelot_write_gix(ocelot,
2697 ANA_PORT_VLAN_CFG_VLAN_VID(OCELOT_STANDALONE_PVID) |
2698 ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
2699 ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1),
2700 ANA_PORT_VLAN_CFG, cpu);
2701 }
2702
ocelot_detect_features(struct ocelot * ocelot)2703 static void ocelot_detect_features(struct ocelot *ocelot)
2704 {
2705 int mmgt, eq_ctrl;
2706
2707 /* For Ocelot, Felix, Seville, Serval etc, SYS:MMGT:MMGT:FREECNT holds
2708 * the number of 240-byte free memory words (aka 4-cell chunks) and not
2709 * 192 bytes as the documentation incorrectly says.
2710 */
2711 mmgt = ocelot_read(ocelot, SYS_MMGT);
2712 ocelot->packet_buffer_size = 240 * SYS_MMGT_FREECNT(mmgt);
2713
2714 eq_ctrl = ocelot_read(ocelot, QSYS_EQ_CTRL);
2715 ocelot->num_frame_refs = QSYS_MMGT_EQ_CTRL_FP_FREE_CNT(eq_ctrl);
2716 }
2717
ocelot_init(struct ocelot * ocelot)2718 int ocelot_init(struct ocelot *ocelot)
2719 {
2720 int i, ret;
2721 u32 port;
2722
2723 if (ocelot->ops->reset) {
2724 ret = ocelot->ops->reset(ocelot);
2725 if (ret) {
2726 dev_err(ocelot->dev, "Switch reset failed\n");
2727 return ret;
2728 }
2729 }
2730
2731 mutex_init(&ocelot->mact_lock);
2732 mutex_init(&ocelot->fwd_domain_lock);
2733 mutex_init(&ocelot->tas_lock);
2734 spin_lock_init(&ocelot->ptp_clock_lock);
2735 spin_lock_init(&ocelot->ts_id_lock);
2736
2737 ocelot->owq = alloc_ordered_workqueue("ocelot-owq", 0);
2738 if (!ocelot->owq)
2739 return -ENOMEM;
2740
2741 ret = ocelot_stats_init(ocelot);
2742 if (ret) {
2743 destroy_workqueue(ocelot->owq);
2744 return ret;
2745 }
2746
2747 INIT_LIST_HEAD(&ocelot->multicast);
2748 INIT_LIST_HEAD(&ocelot->pgids);
2749 INIT_LIST_HEAD(&ocelot->vlans);
2750 INIT_LIST_HEAD(&ocelot->lag_fdbs);
2751 ocelot_detect_features(ocelot);
2752 ocelot_mact_init(ocelot);
2753 ocelot_vlan_init(ocelot);
2754 ocelot_vcap_init(ocelot);
2755 ocelot_cpu_port_init(ocelot);
2756
2757 if (ocelot->ops->psfp_init)
2758 ocelot->ops->psfp_init(ocelot);
2759
2760 for (port = 0; port < ocelot->num_phys_ports; port++) {
2761 /* Clear all counters (5 groups) */
2762 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port) |
2763 SYS_STAT_CFG_STAT_CLEAR_SHOT(0x7f),
2764 SYS_STAT_CFG);
2765 }
2766
2767 /* Only use S-Tag */
2768 ocelot_write(ocelot, ETH_P_8021AD, SYS_VLAN_ETYPE_CFG);
2769
2770 /* Aggregation mode */
2771 ocelot_write(ocelot, ANA_AGGR_CFG_AC_SMAC_ENA |
2772 ANA_AGGR_CFG_AC_DMAC_ENA |
2773 ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA |
2774 ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA |
2775 ANA_AGGR_CFG_AC_IP6_FLOW_LBL_ENA |
2776 ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA,
2777 ANA_AGGR_CFG);
2778
2779 /* Set MAC age time to default value. The entry is aged after
2780 * 2*AGE_PERIOD
2781 */
2782 ocelot_write(ocelot,
2783 ANA_AUTOAGE_AGE_PERIOD(BR_DEFAULT_AGEING_TIME / 2 / HZ),
2784 ANA_AUTOAGE);
2785
2786 /* Disable learning for frames discarded by VLAN ingress filtering */
2787 regmap_field_write(ocelot->regfields[ANA_ADVLEARN_VLAN_CHK], 1);
2788
2789 /* Setup frame ageing - fixed value "2 sec" - in 6.5 us units */
2790 ocelot_write(ocelot, SYS_FRM_AGING_AGE_TX_ENA |
2791 SYS_FRM_AGING_MAX_AGE(307692), SYS_FRM_AGING);
2792
2793 /* Setup flooding PGIDs */
2794 for (i = 0; i < ocelot->num_flooding_pgids; i++)
2795 ocelot_write_rix(ocelot, ANA_FLOODING_FLD_MULTICAST(PGID_MC) |
2796 ANA_FLOODING_FLD_BROADCAST(PGID_BC) |
2797 ANA_FLOODING_FLD_UNICAST(PGID_UC),
2798 ANA_FLOODING, i);
2799 ocelot_write(ocelot, ANA_FLOODING_IPMC_FLD_MC6_DATA(PGID_MCIPV6) |
2800 ANA_FLOODING_IPMC_FLD_MC6_CTRL(PGID_MC) |
2801 ANA_FLOODING_IPMC_FLD_MC4_DATA(PGID_MCIPV4) |
2802 ANA_FLOODING_IPMC_FLD_MC4_CTRL(PGID_MC),
2803 ANA_FLOODING_IPMC);
2804
2805 for (port = 0; port < ocelot->num_phys_ports; port++) {
2806 /* Transmit the frame to the local port. */
2807 ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port);
2808 /* Do not forward BPDU frames to the front ports. */
2809 ocelot_write_gix(ocelot,
2810 ANA_PORT_CPU_FWD_BPDU_CFG_BPDU_REDIR_ENA(0xffff),
2811 ANA_PORT_CPU_FWD_BPDU_CFG,
2812 port);
2813 /* Ensure bridging is disabled */
2814 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_SRC + port);
2815 }
2816
2817 for_each_nonreserved_multicast_dest_pgid(ocelot, i) {
2818 u32 val = ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports - 1, 0));
2819
2820 ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);
2821 }
2822
2823 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_BLACKHOLE);
2824
2825 /* Allow broadcast and unknown L2 multicast to the CPU. */
2826 ocelot_rmw_rix(ocelot, ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)),
2827 ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)),
2828 ANA_PGID_PGID, PGID_MC);
2829 ocelot_rmw_rix(ocelot, ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)),
2830 ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)),
2831 ANA_PGID_PGID, PGID_BC);
2832 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV4);
2833 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV6);
2834
2835 /* Allow manual injection via DEVCPU_QS registers, and byte swap these
2836 * registers endianness.
2837 */
2838 ocelot_write_rix(ocelot, QS_INJ_GRP_CFG_BYTE_SWAP |
2839 QS_INJ_GRP_CFG_MODE(1), QS_INJ_GRP_CFG, 0);
2840 ocelot_write_rix(ocelot, QS_XTR_GRP_CFG_BYTE_SWAP |
2841 QS_XTR_GRP_CFG_MODE(1), QS_XTR_GRP_CFG, 0);
2842 ocelot_write(ocelot, ANA_CPUQ_CFG_CPUQ_MIRROR(2) |
2843 ANA_CPUQ_CFG_CPUQ_LRN(2) |
2844 ANA_CPUQ_CFG_CPUQ_MAC_COPY(2) |
2845 ANA_CPUQ_CFG_CPUQ_SRC_COPY(2) |
2846 ANA_CPUQ_CFG_CPUQ_LOCKED_PORTMOVE(2) |
2847 ANA_CPUQ_CFG_CPUQ_ALLBRIDGE(6) |
2848 ANA_CPUQ_CFG_CPUQ_IPMC_CTRL(6) |
2849 ANA_CPUQ_CFG_CPUQ_IGMP(6) |
2850 ANA_CPUQ_CFG_CPUQ_MLD(6), ANA_CPUQ_CFG);
2851 for (i = 0; i < 16; i++)
2852 ocelot_write_rix(ocelot, ANA_CPUQ_8021_CFG_CPUQ_GARP_VAL(6) |
2853 ANA_CPUQ_8021_CFG_CPUQ_BPDU_VAL(6),
2854 ANA_CPUQ_8021_CFG, i);
2855
2856 return 0;
2857 }
2858 EXPORT_SYMBOL(ocelot_init);
2859
ocelot_deinit(struct ocelot * ocelot)2860 void ocelot_deinit(struct ocelot *ocelot)
2861 {
2862 ocelot_stats_deinit(ocelot);
2863 destroy_workqueue(ocelot->owq);
2864 }
2865 EXPORT_SYMBOL(ocelot_deinit);
2866
ocelot_deinit_port(struct ocelot * ocelot,int port)2867 void ocelot_deinit_port(struct ocelot *ocelot, int port)
2868 {
2869 struct ocelot_port *ocelot_port = ocelot->ports[port];
2870
2871 skb_queue_purge(&ocelot_port->tx_skbs);
2872 }
2873 EXPORT_SYMBOL(ocelot_deinit_port);
2874
2875 MODULE_LICENSE("Dual MIT/GPL");
2876