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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / ethernet / intel / ice / ice_dcb.c
blobadb8dab765c8fae0a39f8c4360eedbadfb0e6715
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2019, Intel Corporation. */
3
4 #include "ice_common.h"
5 #include "ice_sched.h"
6 #include "ice_dcb.h"
7
8 /**
9 * ice_aq_get_lldp_mib
10 * @hw: pointer to the HW struct
11 * @bridge_type: type of bridge requested
12 * @mib_type: Local, Remote or both Local and Remote MIBs
13 * @buf: pointer to the caller-supplied buffer to store the MIB block
14 * @buf_size: size of the buffer (in bytes)
15 * @local_len: length of the returned Local LLDP MIB
16 * @remote_len: length of the returned Remote LLDP MIB
17 * @cd: pointer to command details structure or NULL
18 *
19 * Requests the complete LLDP MIB (entire packet). (0x0A00)
20 */
21 static enum ice_status
22 ice_aq_get_lldp_mib(struct ice_hw *hw, u8 bridge_type, u8 mib_type, void *buf,
23 u16 buf_size, u16 *local_len, u16 *remote_len,
24 struct ice_sq_cd *cd)
25 {
26 struct ice_aqc_lldp_get_mib *cmd;
27 struct ice_aq_desc desc;
28 enum ice_status status;
29
30 cmd = &desc.params.lldp_get_mib;
31
32 if (buf_size == 0 || !buf)
33 return ICE_ERR_PARAM;
34
35 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_get_mib);
36
37 cmd->type = mib_type & ICE_AQ_LLDP_MIB_TYPE_M;
38 cmd->type |= (bridge_type << ICE_AQ_LLDP_BRID_TYPE_S) &
39 ICE_AQ_LLDP_BRID_TYPE_M;
40
41 desc.datalen = cpu_to_le16(buf_size);
42
43 status = ice_aq_send_cmd(hw, &desc, buf, buf_size, cd);
44 if (!status) {
45 if (local_len)
46 *local_len = le16_to_cpu(cmd->local_len);
47 if (remote_len)
48 *remote_len = le16_to_cpu(cmd->remote_len);
49 }
50
51 return status;
52 }
53
54 /**
55 * ice_aq_cfg_lldp_mib_change
56 * @hw: pointer to the HW struct
57 * @ena_update: Enable or Disable event posting
58 * @cd: pointer to command details structure or NULL
59 *
60 * Enable or Disable posting of an event on ARQ when LLDP MIB
61 * associated with the interface changes (0x0A01)
62 */
63 static enum ice_status
64 ice_aq_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_update,
65 struct ice_sq_cd *cd)
66 {
67 struct ice_aqc_lldp_set_mib_change *cmd;
68 struct ice_aq_desc desc;
69
70 cmd = &desc.params.lldp_set_event;
71
72 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_set_mib_change);
73
74 if (!ena_update)
75 cmd->command |= ICE_AQ_LLDP_MIB_UPDATE_DIS;
76
77 return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
78 }
79
80 /**
81 * ice_aq_stop_lldp
82 * @hw: pointer to the HW struct
83 * @shutdown_lldp_agent: True if LLDP Agent needs to be Shutdown
84 * False if LLDP Agent needs to be Stopped
85 * @persist: True if Stop/Shutdown of LLDP Agent needs to be persistent across
86 * reboots
87 * @cd: pointer to command details structure or NULL
88 *
89 * Stop or Shutdown the embedded LLDP Agent (0x0A05)
90 */
91 enum ice_status
92 ice_aq_stop_lldp(struct ice_hw *hw, bool shutdown_lldp_agent, bool persist,
93 struct ice_sq_cd *cd)
94 {
95 struct ice_aqc_lldp_stop *cmd;
96 struct ice_aq_desc desc;
97
98 cmd = &desc.params.lldp_stop;
99
100 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_stop);
101
102 if (shutdown_lldp_agent)
103 cmd->command |= ICE_AQ_LLDP_AGENT_SHUTDOWN;
104
105 if (persist)
106 cmd->command |= ICE_AQ_LLDP_AGENT_PERSIST_DIS;
107
108 return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
109 }
110
111 /**
112 * ice_aq_start_lldp
113 * @hw: pointer to the HW struct
114 * @persist: True if Start of LLDP Agent needs to be persistent across reboots
115 * @cd: pointer to command details structure or NULL
116 *
117 * Start the embedded LLDP Agent on all ports. (0x0A06)
118 */
119 enum ice_status
120 ice_aq_start_lldp(struct ice_hw *hw, bool persist, struct ice_sq_cd *cd)
121 {
122 struct ice_aqc_lldp_start *cmd;
123 struct ice_aq_desc desc;
124
125 cmd = &desc.params.lldp_start;
126
127 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_start);
128
129 cmd->command = ICE_AQ_LLDP_AGENT_START;
130
131 if (persist)
132 cmd->command |= ICE_AQ_LLDP_AGENT_PERSIST_ENA;
133
134 return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
135 }
136
137 /**
138 * ice_aq_set_lldp_mib - Set the LLDP MIB
139 * @hw: pointer to the HW struct
140 * @mib_type: Local, Remote or both Local and Remote MIBs
141 * @buf: pointer to the caller-supplied buffer to store the MIB block
142 * @buf_size: size of the buffer (in bytes)
143 * @cd: pointer to command details structure or NULL
144 *
145 * Set the LLDP MIB. (0x0A08)
146 */
147 static enum ice_status
148 ice_aq_set_lldp_mib(struct ice_hw *hw, u8 mib_type, void *buf, u16 buf_size,
149 struct ice_sq_cd *cd)
150 {
151 struct ice_aqc_lldp_set_local_mib *cmd;
152 struct ice_aq_desc desc;
153
154 cmd = &desc.params.lldp_set_mib;
155
156 if (buf_size == 0 || !buf)
157 return ICE_ERR_PARAM;
158
159 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_set_local_mib);
160
161 desc.flags |= cpu_to_le16((u16)ICE_AQ_FLAG_RD);
162 desc.datalen = cpu_to_le16(buf_size);
163
164 cmd->type = mib_type;
165 cmd->length = cpu_to_le16(buf_size);
166
167 return ice_aq_send_cmd(hw, &desc, buf, buf_size, cd);
168 }
169
170 /**
171 * ice_get_dcbx_status
172 * @hw: pointer to the HW struct
173 *
174 * Get the DCBX status from the Firmware
175 */
176 static u8 ice_get_dcbx_status(struct ice_hw *hw)
177 {
178 u32 reg;
179
180 reg = rd32(hw, PRTDCB_GENS);
181 return (u8)((reg & PRTDCB_GENS_DCBX_STATUS_M) >>
182 PRTDCB_GENS_DCBX_STATUS_S);
183 }
184
185 /**
186 * ice_parse_ieee_ets_common_tlv
187 * @buf: Data buffer to be parsed for ETS CFG/REC data
188 * @ets_cfg: Container to store parsed data
189 *
190 * Parses the common data of IEEE 802.1Qaz ETS CFG/REC TLV
191 */
192 static void
193 ice_parse_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
194 {
195 u8 offset = 0;
196 int i;
197
198 /* Priority Assignment Table (4 octets)
199 * Octets:| 1 | 2 | 3 | 4 |
200 * -----------------------------------------
201 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
202 * -----------------------------------------
203 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
204 * -----------------------------------------
205 */
206 for (i = 0; i < 4; i++) {
207 ets_cfg->prio_table[i * 2] =
208 ((buf[offset] & ICE_IEEE_ETS_PRIO_1_M) >>
209 ICE_IEEE_ETS_PRIO_1_S);
210 ets_cfg->prio_table[i * 2 + 1] =
211 ((buf[offset] & ICE_IEEE_ETS_PRIO_0_M) >>
212 ICE_IEEE_ETS_PRIO_0_S);
213 offset++;
214 }
215
216 /* TC Bandwidth Table (8 octets)
217 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
218 * ---------------------------------
219 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
220 * ---------------------------------
221 *
222 * TSA Assignment Table (8 octets)
223 * Octets:| 9 | 10| 11| 12| 13| 14| 15| 16|
224 * ---------------------------------
225 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
226 * ---------------------------------
227 */
228 ice_for_each_traffic_class(i) {
229 ets_cfg->tcbwtable[i] = buf[offset];
230 ets_cfg->tsatable[i] = buf[ICE_MAX_TRAFFIC_CLASS + offset++];
231 }
232 }
233
234 /**
235 * ice_parse_ieee_etscfg_tlv
236 * @tlv: IEEE 802.1Qaz ETS CFG TLV
237 * @dcbcfg: Local store to update ETS CFG data
238 *
239 * Parses IEEE 802.1Qaz ETS CFG TLV
240 */
241 static void
242 ice_parse_ieee_etscfg_tlv(struct ice_lldp_org_tlv *tlv,
243 struct ice_dcbx_cfg *dcbcfg)
244 {
245 struct ice_dcb_ets_cfg *etscfg;
246 u8 *buf = tlv->tlvinfo;
247
248 /* First Octet post subtype
249 * --------------------------
250 * |will-|CBS | Re- | Max |
251 * |ing | |served| TCs |
252 * --------------------------
253 * |1bit | 1bit|3 bits|3bits|
254 */
255 etscfg = &dcbcfg->etscfg;
256 etscfg->willing = ((buf[0] & ICE_IEEE_ETS_WILLING_M) >>
257 ICE_IEEE_ETS_WILLING_S);
258 etscfg->cbs = ((buf[0] & ICE_IEEE_ETS_CBS_M) >> ICE_IEEE_ETS_CBS_S);
259 etscfg->maxtcs = ((buf[0] & ICE_IEEE_ETS_MAXTC_M) >>
260 ICE_IEEE_ETS_MAXTC_S);
261
262 /* Begin parsing at Priority Assignment Table (offset 1 in buf) */
263 ice_parse_ieee_ets_common_tlv(&buf[1], etscfg);
264 }
265
266 /**
267 * ice_parse_ieee_etsrec_tlv
268 * @tlv: IEEE 802.1Qaz ETS REC TLV
269 * @dcbcfg: Local store to update ETS REC data
270 *
271 * Parses IEEE 802.1Qaz ETS REC TLV
272 */
273 static void
274 ice_parse_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
275 struct ice_dcbx_cfg *dcbcfg)
276 {
277 u8 *buf = tlv->tlvinfo;
278
279 /* Begin parsing at Priority Assignment Table (offset 1 in buf) */
280 ice_parse_ieee_ets_common_tlv(&buf[1], &dcbcfg->etsrec);
281 }
282
283 /**
284 * ice_parse_ieee_pfccfg_tlv
285 * @tlv: IEEE 802.1Qaz PFC CFG TLV
286 * @dcbcfg: Local store to update PFC CFG data
287 *
288 * Parses IEEE 802.1Qaz PFC CFG TLV
289 */
290 static void
291 ice_parse_ieee_pfccfg_tlv(struct ice_lldp_org_tlv *tlv,
292 struct ice_dcbx_cfg *dcbcfg)
293 {
294 u8 *buf = tlv->tlvinfo;
295
296 /* ----------------------------------------
297 * |will-|MBC | Re- | PFC | PFC Enable |
298 * |ing | |served| cap | |
299 * -----------------------------------------
300 * |1bit | 1bit|2 bits|4bits| 1 octet |
301 */
302 dcbcfg->pfc.willing = ((buf[0] & ICE_IEEE_PFC_WILLING_M) >>
303 ICE_IEEE_PFC_WILLING_S);
304 dcbcfg->pfc.mbc = ((buf[0] & ICE_IEEE_PFC_MBC_M) >> ICE_IEEE_PFC_MBC_S);
305 dcbcfg->pfc.pfccap = ((buf[0] & ICE_IEEE_PFC_CAP_M) >>
306 ICE_IEEE_PFC_CAP_S);
307 dcbcfg->pfc.pfcena = buf[1];
308 }
309
310 /**
311 * ice_parse_ieee_app_tlv
312 * @tlv: IEEE 802.1Qaz APP TLV
313 * @dcbcfg: Local store to update APP PRIO data
314 *
315 * Parses IEEE 802.1Qaz APP PRIO TLV
316 */
317 static void
318 ice_parse_ieee_app_tlv(struct ice_lldp_org_tlv *tlv,
319 struct ice_dcbx_cfg *dcbcfg)
320 {
321 u16 offset = 0;
322 u16 typelen;
323 int i = 0;
324 u16 len;
325 u8 *buf;
326
327 typelen = ntohs(tlv->typelen);
328 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
329 buf = tlv->tlvinfo;
330
331 /* Removing sizeof(ouisubtype) and reserved byte from len.
332 * Remaining len div 3 is number of APP TLVs.
333 */
334 len -= (sizeof(tlv->ouisubtype) + 1);
335
336 /* Move offset to App Priority Table */
337 offset++;
338
339 /* Application Priority Table (3 octets)
340 * Octets:| 1 | 2 | 3 |
341 * -----------------------------------------
342 * |Priority|Rsrvd| Sel | Protocol ID |
343 * -----------------------------------------
344 * Bits:|23 21|20 19|18 16|15 0|
345 * -----------------------------------------
346 */
347 while (offset < len) {
348 dcbcfg->app[i].priority = ((buf[offset] &
349 ICE_IEEE_APP_PRIO_M) >>
350 ICE_IEEE_APP_PRIO_S);
351 dcbcfg->app[i].selector = ((buf[offset] &
352 ICE_IEEE_APP_SEL_M) >>
353 ICE_IEEE_APP_SEL_S);
354 dcbcfg->app[i].prot_id = (buf[offset + 1] << 0x8) |
355 buf[offset + 2];
356 /* Move to next app */
357 offset += 3;
358 i++;
359 if (i >= ICE_DCBX_MAX_APPS)
360 break;
361 }
362
363 dcbcfg->numapps = i;
364 }
365
366 /**
367 * ice_parse_ieee_tlv
368 * @tlv: IEEE 802.1Qaz TLV
369 * @dcbcfg: Local store to update ETS REC data
370 *
371 * Get the TLV subtype and send it to parsing function
372 * based on the subtype value
373 */
374 static void
375 ice_parse_ieee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
376 {
377 u32 ouisubtype;
378 u8 subtype;
379
380 ouisubtype = ntohl(tlv->ouisubtype);
381 subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
382 ICE_LLDP_TLV_SUBTYPE_S);
383 switch (subtype) {
384 case ICE_IEEE_SUBTYPE_ETS_CFG:
385 ice_parse_ieee_etscfg_tlv(tlv, dcbcfg);
386 break;
387 case ICE_IEEE_SUBTYPE_ETS_REC:
388 ice_parse_ieee_etsrec_tlv(tlv, dcbcfg);
389 break;
390 case ICE_IEEE_SUBTYPE_PFC_CFG:
391 ice_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
392 break;
393 case ICE_IEEE_SUBTYPE_APP_PRI:
394 ice_parse_ieee_app_tlv(tlv, dcbcfg);
395 break;
396 default:
397 break;
398 }
399 }
400
401 /**
402 * ice_parse_cee_pgcfg_tlv
403 * @tlv: CEE DCBX PG CFG TLV
404 * @dcbcfg: Local store to update ETS CFG data
405 *
406 * Parses CEE DCBX PG CFG TLV
407 */
408 static void
409 ice_parse_cee_pgcfg_tlv(struct ice_cee_feat_tlv *tlv,
410 struct ice_dcbx_cfg *dcbcfg)
411 {
412 struct ice_dcb_ets_cfg *etscfg;
413 u8 *buf = tlv->tlvinfo;
414 u16 offset = 0;
415 int i;
416
417 etscfg = &dcbcfg->etscfg;
418
419 if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
420 etscfg->willing = 1;
421
422 etscfg->cbs = 0;
423 /* Priority Group Table (4 octets)
424 * Octets:| 1 | 2 | 3 | 4 |
425 * -----------------------------------------
426 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
427 * -----------------------------------------
428 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
429 * -----------------------------------------
430 */
431 for (i = 0; i < 4; i++) {
432 etscfg->prio_table[i * 2] =
433 ((buf[offset] & ICE_CEE_PGID_PRIO_1_M) >>
434 ICE_CEE_PGID_PRIO_1_S);
435 etscfg->prio_table[i * 2 + 1] =
436 ((buf[offset] & ICE_CEE_PGID_PRIO_0_M) >>
437 ICE_CEE_PGID_PRIO_0_S);
438 offset++;
439 }
440
441 /* PG Percentage Table (8 octets)
442 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
443 * ---------------------------------
444 * |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
445 * ---------------------------------
446 */
447 ice_for_each_traffic_class(i) {
448 etscfg->tcbwtable[i] = buf[offset++];
449
450 if (etscfg->prio_table[i] == ICE_CEE_PGID_STRICT)
451 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
452 else
453 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
454 }
455
456 /* Number of TCs supported (1 octet) */
457 etscfg->maxtcs = buf[offset];
458 }
459
460 /**
461 * ice_parse_cee_pfccfg_tlv
462 * @tlv: CEE DCBX PFC CFG TLV
463 * @dcbcfg: Local store to update PFC CFG data
464 *
465 * Parses CEE DCBX PFC CFG TLV
466 */
467 static void
468 ice_parse_cee_pfccfg_tlv(struct ice_cee_feat_tlv *tlv,
469 struct ice_dcbx_cfg *dcbcfg)
470 {
471 u8 *buf = tlv->tlvinfo;
472
473 if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
474 dcbcfg->pfc.willing = 1;
475
476 /* ------------------------
477 * | PFC Enable | PFC TCs |
478 * ------------------------
479 * | 1 octet | 1 octet |
480 */
481 dcbcfg->pfc.pfcena = buf[0];
482 dcbcfg->pfc.pfccap = buf[1];
483 }
484
485 /**
486 * ice_parse_cee_app_tlv
487 * @tlv: CEE DCBX APP TLV
488 * @dcbcfg: Local store to update APP PRIO data
489 *
490 * Parses CEE DCBX APP PRIO TLV
491 */
492 static void
493 ice_parse_cee_app_tlv(struct ice_cee_feat_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
494 {
495 u16 len, typelen, offset = 0;
496 struct ice_cee_app_prio *app;
497 u8 i;
498
499 typelen = ntohs(tlv->hdr.typelen);
500 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
501
502 dcbcfg->numapps = len / sizeof(*app);
503 if (!dcbcfg->numapps)
504 return;
505 if (dcbcfg->numapps > ICE_DCBX_MAX_APPS)
506 dcbcfg->numapps = ICE_DCBX_MAX_APPS;
507
508 for (i = 0; i < dcbcfg->numapps; i++) {
509 u8 up, selector;
510
511 app = (struct ice_cee_app_prio *)(tlv->tlvinfo + offset);
512 for (up = 0; up < ICE_MAX_USER_PRIORITY; up++)
513 if (app->prio_map & BIT(up))
514 break;
515
516 dcbcfg->app[i].priority = up;
517
518 /* Get Selector from lower 2 bits, and convert to IEEE */
519 selector = (app->upper_oui_sel & ICE_CEE_APP_SELECTOR_M);
520 switch (selector) {
521 case ICE_CEE_APP_SEL_ETHTYPE:
522 dcbcfg->app[i].selector = ICE_APP_SEL_ETHTYPE;
523 break;
524 case ICE_CEE_APP_SEL_TCPIP:
525 dcbcfg->app[i].selector = ICE_APP_SEL_TCPIP;
526 break;
527 default:
528 /* Keep selector as it is for unknown types */
529 dcbcfg->app[i].selector = selector;
530 }
531
532 dcbcfg->app[i].prot_id = ntohs(app->protocol);
533 /* Move to next app */
534 offset += sizeof(*app);
535 }
536 }
537
538 /**
539 * ice_parse_cee_tlv
540 * @tlv: CEE DCBX TLV
541 * @dcbcfg: Local store to update DCBX config data
542 *
543 * Get the TLV subtype and send it to parsing function
544 * based on the subtype value
545 */
546 static void
547 ice_parse_cee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
548 {
549 struct ice_cee_feat_tlv *sub_tlv;
550 u8 subtype, feat_tlv_count = 0;
551 u16 len, tlvlen, typelen;
552 u32 ouisubtype;
553
554 ouisubtype = ntohl(tlv->ouisubtype);
555 subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
556 ICE_LLDP_TLV_SUBTYPE_S);
557 /* Return if not CEE DCBX */
558 if (subtype != ICE_CEE_DCBX_TYPE)
559 return;
560
561 typelen = ntohs(tlv->typelen);
562 tlvlen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
563 len = sizeof(tlv->typelen) + sizeof(ouisubtype) +
564 sizeof(struct ice_cee_ctrl_tlv);
565 /* Return if no CEE DCBX Feature TLVs */
566 if (tlvlen <= len)
567 return;
568
569 sub_tlv = (struct ice_cee_feat_tlv *)((char *)tlv + len);
570 while (feat_tlv_count < ICE_CEE_MAX_FEAT_TYPE) {
571 u16 sublen;
572
573 typelen = ntohs(sub_tlv->hdr.typelen);
574 sublen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
575 subtype = (u8)((typelen & ICE_LLDP_TLV_TYPE_M) >>
576 ICE_LLDP_TLV_TYPE_S);
577 switch (subtype) {
578 case ICE_CEE_SUBTYPE_PG_CFG:
579 ice_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
580 break;
581 case ICE_CEE_SUBTYPE_PFC_CFG:
582 ice_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
583 break;
584 case ICE_CEE_SUBTYPE_APP_PRI:
585 ice_parse_cee_app_tlv(sub_tlv, dcbcfg);
586 break;
587 default:
588 return; /* Invalid Sub-type return */
589 }
590 feat_tlv_count++;
591 /* Move to next sub TLV */
592 sub_tlv = (struct ice_cee_feat_tlv *)
593 ((char *)sub_tlv + sizeof(sub_tlv->hdr.typelen) +
594 sublen);
595 }
596 }
597
598 /**
599 * ice_parse_org_tlv
600 * @tlv: Organization specific TLV
601 * @dcbcfg: Local store to update ETS REC data
602 *
603 * Currently only IEEE 802.1Qaz TLV is supported, all others
604 * will be returned
605 */
606 static void
607 ice_parse_org_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
608 {
609 u32 ouisubtype;
610 u32 oui;
611
612 ouisubtype = ntohl(tlv->ouisubtype);
613 oui = ((ouisubtype & ICE_LLDP_TLV_OUI_M) >> ICE_LLDP_TLV_OUI_S);
614 switch (oui) {
615 case ICE_IEEE_8021QAZ_OUI:
616 ice_parse_ieee_tlv(tlv, dcbcfg);
617 break;
618 case ICE_CEE_DCBX_OUI:
619 ice_parse_cee_tlv(tlv, dcbcfg);
620 break;
621 default:
622 break;
623 }
624 }
625
626 /**
627 * ice_lldp_to_dcb_cfg
628 * @lldpmib: LLDPDU to be parsed
629 * @dcbcfg: store for LLDPDU data
630 *
631 * Parse DCB configuration from the LLDPDU
632 */
633 static enum ice_status
634 ice_lldp_to_dcb_cfg(u8 *lldpmib, struct ice_dcbx_cfg *dcbcfg)
635 {
636 struct ice_lldp_org_tlv *tlv;
637 enum ice_status ret = 0;
638 u16 offset = 0;
639 u16 typelen;
640 u16 type;
641 u16 len;
642
643 if (!lldpmib || !dcbcfg)
644 return ICE_ERR_PARAM;
645
646 /* set to the start of LLDPDU */
647 lldpmib += ETH_HLEN;
648 tlv = (struct ice_lldp_org_tlv *)lldpmib;
649 while (1) {
650 typelen = ntohs(tlv->typelen);
651 type = ((typelen & ICE_LLDP_TLV_TYPE_M) >> ICE_LLDP_TLV_TYPE_S);
652 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
653 offset += sizeof(typelen) + len;
654
655 /* END TLV or beyond LLDPDU size */
656 if (type == ICE_TLV_TYPE_END || offset > ICE_LLDPDU_SIZE)
657 break;
658
659 switch (type) {
660 case ICE_TLV_TYPE_ORG:
661 ice_parse_org_tlv(tlv, dcbcfg);
662 break;
663 default:
664 break;
665 }
666
667 /* Move to next TLV */
668 tlv = (struct ice_lldp_org_tlv *)
669 ((char *)tlv + sizeof(tlv->typelen) + len);
670 }
671
672 return ret;
673 }
674
675 /**
676 * ice_aq_get_dcb_cfg
677 * @hw: pointer to the HW struct
678 * @mib_type: MIB type for the query
679 * @bridgetype: bridge type for the query (remote)
680 * @dcbcfg: store for LLDPDU data
681 *
682 * Query DCB configuration from the firmware
683 */
684 enum ice_status
685 ice_aq_get_dcb_cfg(struct ice_hw *hw, u8 mib_type, u8 bridgetype,
686 struct ice_dcbx_cfg *dcbcfg)
687 {
688 enum ice_status ret;
689 u8 *lldpmib;
690
691 /* Allocate the LLDPDU */
692 lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
693 if (!lldpmib)
694 return ICE_ERR_NO_MEMORY;
695
696 ret = ice_aq_get_lldp_mib(hw, bridgetype, mib_type, (void *)lldpmib,
697 ICE_LLDPDU_SIZE, NULL, NULL, NULL);
698
699 if (!ret)
700 /* Parse LLDP MIB to get DCB configuration */
701 ret = ice_lldp_to_dcb_cfg(lldpmib, dcbcfg);
702
703 devm_kfree(ice_hw_to_dev(hw), lldpmib);
704
705 return ret;
706 }
707
708 /**
709 * ice_aq_start_stop_dcbx - Start/Stop DCBX service in FW
710 * @hw: pointer to the HW struct
711 * @start_dcbx_agent: True if DCBX Agent needs to be started
712 * False if DCBX Agent needs to be stopped
713 * @dcbx_agent_status: FW indicates back the DCBX agent status
714 * True if DCBX Agent is active
715 * False if DCBX Agent is stopped
716 * @cd: pointer to command details structure or NULL
717 *
718 * Start/Stop the embedded dcbx Agent. In case that this wrapper function
719 * returns ICE_SUCCESS, caller will need to check if FW returns back the same
720 * value as stated in dcbx_agent_status, and react accordingly. (0x0A09)
721 */
722 enum ice_status
723 ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent,
724 bool *dcbx_agent_status, struct ice_sq_cd *cd)
725 {
726 struct ice_aqc_lldp_stop_start_specific_agent *cmd;
727 enum ice_status status;
728 struct ice_aq_desc desc;
729 u16 opcode;
730
731 cmd = &desc.params.lldp_agent_ctrl;
732
733 opcode = ice_aqc_opc_lldp_stop_start_specific_agent;
734
735 ice_fill_dflt_direct_cmd_desc(&desc, opcode);
736
737 if (start_dcbx_agent)
738 cmd->command = ICE_AQC_START_STOP_AGENT_START_DCBX;
739
740 status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
741
742 *dcbx_agent_status = false;
743
744 if (!status &&
745 cmd->command == ICE_AQC_START_STOP_AGENT_START_DCBX)
746 *dcbx_agent_status = true;
747
748 return status;
749 }
750
751 /**
752 * ice_aq_get_cee_dcb_cfg
753 * @hw: pointer to the HW struct
754 * @buff: response buffer that stores CEE operational configuration
755 * @cd: pointer to command details structure or NULL
756 *
757 * Get CEE DCBX mode operational configuration from firmware (0x0A07)
758 */
759 static enum ice_status
760 ice_aq_get_cee_dcb_cfg(struct ice_hw *hw,
761 struct ice_aqc_get_cee_dcb_cfg_resp *buff,
762 struct ice_sq_cd *cd)
763 {
764 struct ice_aq_desc desc;
765
766 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_cee_dcb_cfg);
767
768 return ice_aq_send_cmd(hw, &desc, (void *)buff, sizeof(*buff), cd);
769 }
770
771 /**
772 * ice_cee_to_dcb_cfg
773 * @cee_cfg: pointer to CEE configuration struct
774 * @dcbcfg: DCB configuration struct
775 *
776 * Convert CEE configuration from firmware to DCB configuration
777 */
778 static void
779 ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg,
780 struct ice_dcbx_cfg *dcbcfg)
781 {
782 u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
783 u32 ice_aqc_cee_status_mask, ice_aqc_cee_status_shift;
784 u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
785 u8 i, err, sync, oper, app_index, ice_app_sel_type;
786 u16 ice_aqc_cee_app_mask, ice_aqc_cee_app_shift;
787 u16 ice_app_prot_id_type;
788
789 /* CEE PG data to ETS config */
790 dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
791
792 /* Note that the FW creates the oper_prio_tc nibbles reversed
793 * from those in the CEE Priority Group sub-TLV.
794 */
795 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
796 dcbcfg->etscfg.prio_table[i * 2] =
797 ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_0_M) >>
798 ICE_CEE_PGID_PRIO_0_S);
799 dcbcfg->etscfg.prio_table[i * 2 + 1] =
800 ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_1_M) >>
801 ICE_CEE_PGID_PRIO_1_S);
802 }
803
804 ice_for_each_traffic_class(i) {
805 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
806
807 if (dcbcfg->etscfg.prio_table[i] == ICE_CEE_PGID_STRICT) {
808 /* Map it to next empty TC */
809 dcbcfg->etscfg.prio_table[i] = cee_cfg->oper_num_tc - 1;
810 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
811 } else {
812 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
813 }
814 }
815
816 /* CEE PFC data to ETS config */
817 dcbcfg->pfc.pfcena = cee_cfg->oper_pfc_en;
818 dcbcfg->pfc.pfccap = ICE_MAX_TRAFFIC_CLASS;
819
820 app_index = 0;
821 for (i = 0; i < 3; i++) {
822 if (i == 0) {
823 /* FCoE APP */
824 ice_aqc_cee_status_mask = ICE_AQC_CEE_FCOE_STATUS_M;
825 ice_aqc_cee_status_shift = ICE_AQC_CEE_FCOE_STATUS_S;
826 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FCOE_M;
827 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FCOE_S;
828 ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
829 ice_app_prot_id_type = ICE_APP_PROT_ID_FCOE;
830 } else if (i == 1) {
831 /* iSCSI APP */
832 ice_aqc_cee_status_mask = ICE_AQC_CEE_ISCSI_STATUS_M;
833 ice_aqc_cee_status_shift = ICE_AQC_CEE_ISCSI_STATUS_S;
834 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_ISCSI_M;
835 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_ISCSI_S;
836 ice_app_sel_type = ICE_APP_SEL_TCPIP;
837 ice_app_prot_id_type = ICE_APP_PROT_ID_ISCSI;
838 } else {
839 /* FIP APP */
840 ice_aqc_cee_status_mask = ICE_AQC_CEE_FIP_STATUS_M;
841 ice_aqc_cee_status_shift = ICE_AQC_CEE_FIP_STATUS_S;
842 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FIP_M;
843 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FIP_S;
844 ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
845 ice_app_prot_id_type = ICE_APP_PROT_ID_FIP;
846 }
847
848 status = (tlv_status & ice_aqc_cee_status_mask) >>
849 ice_aqc_cee_status_shift;
850 err = (status & ICE_TLV_STATUS_ERR) ? 1 : 0;
851 sync = (status & ICE_TLV_STATUS_SYNC) ? 1 : 0;
852 oper = (status & ICE_TLV_STATUS_OPER) ? 1 : 0;
853 /* Add FCoE/iSCSI/FIP APP if Error is False and
854 * Oper/Sync is True
855 */
856 if (!err && sync && oper) {
857 dcbcfg->app[app_index].priority =
858 (app_prio & ice_aqc_cee_app_mask) >>
859 ice_aqc_cee_app_shift;
860 dcbcfg->app[app_index].selector = ice_app_sel_type;
861 dcbcfg->app[app_index].prot_id = ice_app_prot_id_type;
862 app_index++;
863 }
864 }
865
866 dcbcfg->numapps = app_index;
867 }
868
869 /**
870 * ice_get_ieee_dcb_cfg
871 * @pi: port information structure
872 * @dcbx_mode: mode of DCBX (IEEE or CEE)
873 *
874 * Get IEEE or CEE mode DCB configuration from the Firmware
875 */
876 static enum ice_status
877 ice_get_ieee_or_cee_dcb_cfg(struct ice_port_info *pi, u8 dcbx_mode)
878 {
879 struct ice_dcbx_cfg *dcbx_cfg = NULL;
880 enum ice_status ret;
881
882 if (!pi)
883 return ICE_ERR_PARAM;
884
885 if (dcbx_mode == ICE_DCBX_MODE_IEEE)
886 dcbx_cfg = &pi->local_dcbx_cfg;
887 else if (dcbx_mode == ICE_DCBX_MODE_CEE)
888 dcbx_cfg = &pi->desired_dcbx_cfg;
889
890 /* Get Local DCB Config in case of ICE_DCBX_MODE_IEEE
891 * or get CEE DCB Desired Config in case of ICE_DCBX_MODE_CEE
892 */
893 ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_LOCAL,
894 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
895 if (ret)
896 goto out;
897
898 /* Get Remote DCB Config */
899 dcbx_cfg = &pi->remote_dcbx_cfg;
900 ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE,
901 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
902 /* Don't treat ENOENT as an error for Remote MIBs */
903 if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT)
904 ret = 0;
905
906 out:
907 return ret;
908 }
909
910 /**
911 * ice_get_dcb_cfg
912 * @pi: port information structure
913 *
914 * Get DCB configuration from the Firmware
915 */
916 enum ice_status ice_get_dcb_cfg(struct ice_port_info *pi)
917 {
918 struct ice_aqc_get_cee_dcb_cfg_resp cee_cfg;
919 struct ice_dcbx_cfg *dcbx_cfg;
920 enum ice_status ret;
921
922 if (!pi)
923 return ICE_ERR_PARAM;
924
925 ret = ice_aq_get_cee_dcb_cfg(pi->hw, &cee_cfg, NULL);
926 if (!ret) {
927 /* CEE mode */
928 dcbx_cfg = &pi->local_dcbx_cfg;
929 dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_CEE;
930 dcbx_cfg->tlv_status = le32_to_cpu(cee_cfg.tlv_status);
931 ice_cee_to_dcb_cfg(&cee_cfg, dcbx_cfg);
932 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_CEE);
933 } else if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT) {
934 /* CEE mode not enabled try querying IEEE data */
935 dcbx_cfg = &pi->local_dcbx_cfg;
936 dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE;
937 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_IEEE);
938 }
939
940 return ret;
941 }
942
943 /**
944 * ice_init_dcb
945 * @hw: pointer to the HW struct
946 * @enable_mib_change: enable MIB change event
947 *
948 * Update DCB configuration from the Firmware
949 */
950 enum ice_status ice_init_dcb(struct ice_hw *hw, bool enable_mib_change)
951 {
952 struct ice_port_info *pi = hw->port_info;
953 enum ice_status ret = 0;
954
955 if (!hw->func_caps.common_cap.dcb)
956 return ICE_ERR_NOT_SUPPORTED;
957
958 pi->is_sw_lldp = true;
959
960 /* Get DCBX status */
961 pi->dcbx_status = ice_get_dcbx_status(hw);
962
963 if (pi->dcbx_status == ICE_DCBX_STATUS_DONE ||
964 pi->dcbx_status == ICE_DCBX_STATUS_IN_PROGRESS ||
965 pi->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) {
966 /* Get current DCBX configuration */
967 ret = ice_get_dcb_cfg(pi);
968 if (ret)
969 return ret;
970 pi->is_sw_lldp = false;
971 } else if (pi->dcbx_status == ICE_DCBX_STATUS_DIS) {
972 return ICE_ERR_NOT_READY;
973 }
974
975 /* Configure the LLDP MIB change event */
976 if (enable_mib_change) {
977 ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL);
978 if (ret)
979 pi->is_sw_lldp = true;
980 }
981
982 return ret;
983 }
984
985 /**
986 * ice_cfg_lldp_mib_change
987 * @hw: pointer to the HW struct
988 * @ena_mib: enable/disable MIB change event
989 *
990 * Configure (disable/enable) MIB
991 */
992 enum ice_status ice_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_mib)
993 {
994 struct ice_port_info *pi = hw->port_info;
995 enum ice_status ret;
996
997 if (!hw->func_caps.common_cap.dcb)
998 return ICE_ERR_NOT_SUPPORTED;
999
1000 /* Get DCBX status */
1001 pi->dcbx_status = ice_get_dcbx_status(hw);
1002
1003 if (pi->dcbx_status == ICE_DCBX_STATUS_DIS)
1004 return ICE_ERR_NOT_READY;
1005
1006 ret = ice_aq_cfg_lldp_mib_change(hw, ena_mib, NULL);
1007 if (!ret)
1008 pi->is_sw_lldp = !ena_mib;
1009
1010 return ret;
1011 }
1012
1013 /**
1014 * ice_add_ieee_ets_common_tlv
1015 * @buf: Data buffer to be populated with ice_dcb_ets_cfg data
1016 * @ets_cfg: Container for ice_dcb_ets_cfg data
1017 *
1018 * Populate the TLV buffer with ice_dcb_ets_cfg data
1019 */
1020 static void
1021 ice_add_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
1022 {
1023 u8 priority0, priority1;
1024 u8 offset = 0;
1025 int i;
1026
1027 /* Priority Assignment Table (4 octets)
1028 * Octets:| 1 | 2 | 3 | 4 |
1029 * -----------------------------------------
1030 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
1031 * -----------------------------------------
1032 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
1033 * -----------------------------------------
1034 */
1035 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
1036 priority0 = ets_cfg->prio_table[i * 2] & 0xF;
1037 priority1 = ets_cfg->prio_table[i * 2 + 1] & 0xF;
1038 buf[offset] = (priority0 << ICE_IEEE_ETS_PRIO_1_S) | priority1;
1039 offset++;
1040 }
1041
1042 /* TC Bandwidth Table (8 octets)
1043 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1044 * ---------------------------------
1045 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1046 * ---------------------------------
1047 *
1048 * TSA Assignment Table (8 octets)
1049 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1050 * ---------------------------------
1051 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1052 * ---------------------------------
1053 */
1054 ice_for_each_traffic_class(i) {
1055 buf[offset] = ets_cfg->tcbwtable[i];
1056 buf[ICE_MAX_TRAFFIC_CLASS + offset] = ets_cfg->tsatable[i];
1057 offset++;
1058 }
1059 }
1060
1061 /**
1062 * ice_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
1063 * @tlv: Fill the ETS config data in IEEE format
1064 * @dcbcfg: Local store which holds the DCB Config
1065 *
1066 * Prepare IEEE 802.1Qaz ETS CFG TLV
1067 */
1068 static void
1069 ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1070 {
1071 struct ice_dcb_ets_cfg *etscfg;
1072 u8 *buf = tlv->tlvinfo;
1073 u8 maxtcwilling = 0;
1074 u32 ouisubtype;
1075 u16 typelen;
1076
1077 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1078 ICE_IEEE_ETS_TLV_LEN);
1079 tlv->typelen = htons(typelen);
1080
1081 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1082 ICE_IEEE_SUBTYPE_ETS_CFG);
1083 tlv->ouisubtype = htonl(ouisubtype);
1084
1085 /* First Octet post subtype
1086 * --------------------------
1087 * |will-|CBS | Re- | Max |
1088 * |ing | |served| TCs |
1089 * --------------------------
1090 * |1bit | 1bit|3 bits|3bits|
1091 */
1092 etscfg = &dcbcfg->etscfg;
1093 if (etscfg->willing)
1094 maxtcwilling = BIT(ICE_IEEE_ETS_WILLING_S);
1095 maxtcwilling |= etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
1096 buf[0] = maxtcwilling;
1097
1098 /* Begin adding at Priority Assignment Table (offset 1 in buf) */
1099 ice_add_ieee_ets_common_tlv(&buf[1], etscfg);
1100 }
1101
1102 /**
1103 * ice_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
1104 * @tlv: Fill ETS Recommended TLV in IEEE format
1105 * @dcbcfg: Local store which holds the DCB Config
1106 *
1107 * Prepare IEEE 802.1Qaz ETS REC TLV
1108 */
1109 static void
1110 ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
1111 struct ice_dcbx_cfg *dcbcfg)
1112 {
1113 struct ice_dcb_ets_cfg *etsrec;
1114 u8 *buf = tlv->tlvinfo;
1115 u32 ouisubtype;
1116 u16 typelen;
1117
1118 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1119 ICE_IEEE_ETS_TLV_LEN);
1120 tlv->typelen = htons(typelen);
1121
1122 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1123 ICE_IEEE_SUBTYPE_ETS_REC);
1124 tlv->ouisubtype = htonl(ouisubtype);
1125
1126 etsrec = &dcbcfg->etsrec;
1127
1128 /* First Octet is reserved */
1129 /* Begin adding at Priority Assignment Table (offset 1 in buf) */
1130 ice_add_ieee_ets_common_tlv(&buf[1], etsrec);
1131 }
1132
1133 /**
1134 * ice_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
1135 * @tlv: Fill PFC TLV in IEEE format
1136 * @dcbcfg: Local store which holds the PFC CFG data
1137 *
1138 * Prepare IEEE 802.1Qaz PFC CFG TLV
1139 */
1140 static void
1141 ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1142 {
1143 u8 *buf = tlv->tlvinfo;
1144 u32 ouisubtype;
1145 u16 typelen;
1146
1147 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1148 ICE_IEEE_PFC_TLV_LEN);
1149 tlv->typelen = htons(typelen);
1150
1151 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1152 ICE_IEEE_SUBTYPE_PFC_CFG);
1153 tlv->ouisubtype = htonl(ouisubtype);
1154
1155 /* ----------------------------------------
1156 * |will-|MBC | Re- | PFC | PFC Enable |
1157 * |ing | |served| cap | |
1158 * -----------------------------------------
1159 * |1bit | 1bit|2 bits|4bits| 1 octet |
1160 */
1161 if (dcbcfg->pfc.willing)
1162 buf[0] = BIT(ICE_IEEE_PFC_WILLING_S);
1163
1164 if (dcbcfg->pfc.mbc)
1165 buf[0] |= BIT(ICE_IEEE_PFC_MBC_S);
1166
1167 buf[0] |= dcbcfg->pfc.pfccap & 0xF;
1168 buf[1] = dcbcfg->pfc.pfcena;
1169 }
1170
1171 /**
1172 * ice_add_ieee_app_pri_tlv - Prepare APP TLV in IEEE format
1173 * @tlv: Fill APP TLV in IEEE format
1174 * @dcbcfg: Local store which holds the APP CFG data
1175 *
1176 * Prepare IEEE 802.1Qaz APP CFG TLV
1177 */
1178 static void
1179 ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv *tlv,
1180 struct ice_dcbx_cfg *dcbcfg)
1181 {
1182 u16 typelen, len, offset = 0;
1183 u8 priority, selector, i = 0;
1184 u8 *buf = tlv->tlvinfo;
1185 u32 ouisubtype;
1186
1187 /* No APP TLVs then just return */
1188 if (dcbcfg->numapps == 0)
1189 return;
1190 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1191 ICE_IEEE_SUBTYPE_APP_PRI);
1192 tlv->ouisubtype = htonl(ouisubtype);
1193
1194 /* Move offset to App Priority Table */
1195 offset++;
1196 /* Application Priority Table (3 octets)
1197 * Octets:| 1 | 2 | 3 |
1198 * -----------------------------------------
1199 * |Priority|Rsrvd| Sel | Protocol ID |
1200 * -----------------------------------------
1201 * Bits:|23 21|20 19|18 16|15 0|
1202 * -----------------------------------------
1203 */
1204 while (i < dcbcfg->numapps) {
1205 priority = dcbcfg->app[i].priority & 0x7;
1206 selector = dcbcfg->app[i].selector & 0x7;
1207 buf[offset] = (priority << ICE_IEEE_APP_PRIO_S) | selector;
1208 buf[offset + 1] = (dcbcfg->app[i].prot_id >> 0x8) & 0xFF;
1209 buf[offset + 2] = dcbcfg->app[i].prot_id & 0xFF;
1210 /* Move to next app */
1211 offset += 3;
1212 i++;
1213 if (i >= ICE_DCBX_MAX_APPS)
1214 break;
1215 }
1216 /* len includes size of ouisubtype + 1 reserved + 3*numapps */
1217 len = sizeof(tlv->ouisubtype) + 1 + (i * 3);
1218 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | (len & 0x1FF));
1219 tlv->typelen = htons(typelen);
1220 }
1221
1222 /**
1223 * ice_add_dcb_tlv - Add all IEEE TLVs
1224 * @tlv: Fill TLV data in IEEE format
1225 * @dcbcfg: Local store which holds the DCB Config
1226 * @tlvid: Type of IEEE TLV
1227 *
1228 * Add tlv information
1229 */
1230 static void
1231 ice_add_dcb_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg,
1232 u16 tlvid)
1233 {
1234 switch (tlvid) {
1235 case ICE_IEEE_TLV_ID_ETS_CFG:
1236 ice_add_ieee_ets_tlv(tlv, dcbcfg);
1237 break;
1238 case ICE_IEEE_TLV_ID_ETS_REC:
1239 ice_add_ieee_etsrec_tlv(tlv, dcbcfg);
1240 break;
1241 case ICE_IEEE_TLV_ID_PFC_CFG:
1242 ice_add_ieee_pfc_tlv(tlv, dcbcfg);
1243 break;
1244 case ICE_IEEE_TLV_ID_APP_PRI:
1245 ice_add_ieee_app_pri_tlv(tlv, dcbcfg);
1246 break;
1247 default:
1248 break;
1249 }
1250 }
1251
1252 /**
1253 * ice_dcb_cfg_to_lldp - Convert DCB configuration to MIB format
1254 * @lldpmib: pointer to the HW struct
1255 * @miblen: length of LLDP MIB
1256 * @dcbcfg: Local store which holds the DCB Config
1257 *
1258 * Convert the DCB configuration to MIB format
1259 */
1260 static void
1261 ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg)
1262 {
1263 u16 len, offset = 0, tlvid = ICE_TLV_ID_START;
1264 struct ice_lldp_org_tlv *tlv;
1265 u16 typelen;
1266
1267 tlv = (struct ice_lldp_org_tlv *)lldpmib;
1268 while (1) {
1269 ice_add_dcb_tlv(tlv, dcbcfg, tlvid++);
1270 typelen = ntohs(tlv->typelen);
1271 len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
1272 if (len)
1273 offset += len + 2;
1274 /* END TLV or beyond LLDPDU size */
1275 if (tlvid >= ICE_TLV_ID_END_OF_LLDPPDU ||
1276 offset > ICE_LLDPDU_SIZE)
1277 break;
1278 /* Move to next TLV */
1279 if (len)
1280 tlv = (struct ice_lldp_org_tlv *)
1281 ((char *)tlv + sizeof(tlv->typelen) + len);
1282 }
1283 *miblen = offset;
1284 }
1285
1286 /**
1287 * ice_set_dcb_cfg - Set the local LLDP MIB to FW
1288 * @pi: port information structure
1289 *
1290 * Set DCB configuration to the Firmware
1291 */
1292 enum ice_status ice_set_dcb_cfg(struct ice_port_info *pi)
1293 {
1294 u8 mib_type, *lldpmib = NULL;
1295 struct ice_dcbx_cfg *dcbcfg;
1296 enum ice_status ret;
1297 struct ice_hw *hw;
1298 u16 miblen;
1299
1300 if (!pi)
1301 return ICE_ERR_PARAM;
1302
1303 hw = pi->hw;
1304
1305 /* update the HW local config */
1306 dcbcfg = &pi->local_dcbx_cfg;
1307 /* Allocate the LLDPDU */
1308 lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
1309 if (!lldpmib)
1310 return ICE_ERR_NO_MEMORY;
1311
1312 mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
1313 if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
1314 mib_type |= SET_LOCAL_MIB_TYPE_CEE_NON_WILLING;
1315
1316 ice_dcb_cfg_to_lldp(lldpmib, &miblen, dcbcfg);
1317 ret = ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen,
1318 NULL);
1319
1320 devm_kfree(ice_hw_to_dev(hw), lldpmib);
1321
1322 return ret;
1323 }
1324
1325 /**
1326 * ice_aq_query_port_ets - query port ETS configuration
1327 * @pi: port information structure
1328 * @buf: pointer to buffer
1329 * @buf_size: buffer size in bytes
1330 * @cd: pointer to command details structure or NULL
1331 *
1332 * query current port ETS configuration
1333 */
1334 static enum ice_status
1335 ice_aq_query_port_ets(struct ice_port_info *pi,
1336 struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1337 struct ice_sq_cd *cd)
1338 {
1339 struct ice_aqc_query_port_ets *cmd;
1340 struct ice_aq_desc desc;
1341 enum ice_status status;
1342
1343 if (!pi)
1344 return ICE_ERR_PARAM;
1345 cmd = &desc.params.port_ets;
1346 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_query_port_ets);
1347 cmd->port_teid = pi->root->info.node_teid;
1348
1349 status = ice_aq_send_cmd(pi->hw, &desc, buf, buf_size, cd);
1350 return status;
1351 }
1352
1353 /**
1354 * ice_update_port_tc_tree_cfg - update TC tree configuration
1355 * @pi: port information structure
1356 * @buf: pointer to buffer
1357 *
1358 * update the SW DB with the new TC changes
1359 */
1360 static enum ice_status
1361 ice_update_port_tc_tree_cfg(struct ice_port_info *pi,
1362 struct ice_aqc_port_ets_elem *buf)
1363 {
1364 struct ice_sched_node *node, *tc_node;
1365 struct ice_aqc_get_elem elem;
1366 enum ice_status status = 0;
1367 u32 teid1, teid2;
1368 u8 i, j;
1369
1370 if (!pi)
1371 return ICE_ERR_PARAM;
1372 /* suspend the missing TC nodes */
1373 for (i = 0; i < pi->root->num_children; i++) {
1374 teid1 = le32_to_cpu(pi->root->children[i]->info.node_teid);
1375 ice_for_each_traffic_class(j) {
1376 teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1377 if (teid1 == teid2)
1378 break;
1379 }
1380 if (j < ICE_MAX_TRAFFIC_CLASS)
1381 continue;
1382 /* TC is missing */
1383 pi->root->children[i]->in_use = false;
1384 }
1385 /* add the new TC nodes */
1386 ice_for_each_traffic_class(j) {
1387 teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1388 if (teid2 == ICE_INVAL_TEID)
1389 continue;
1390 /* Is it already present in the tree ? */
1391 for (i = 0; i < pi->root->num_children; i++) {
1392 tc_node = pi->root->children[i];
1393 if (!tc_node)
1394 continue;
1395 teid1 = le32_to_cpu(tc_node->info.node_teid);
1396 if (teid1 == teid2) {
1397 tc_node->tc_num = j;
1398 tc_node->in_use = true;
1399 break;
1400 }
1401 }
1402 if (i < pi->root->num_children)
1403 continue;
1404 /* new TC */
1405 status = ice_sched_query_elem(pi->hw, teid2, &elem);
1406 if (!status)
1407 status = ice_sched_add_node(pi, 1, &elem.generic[0]);
1408 if (status)
1409 break;
1410 /* update the TC number */
1411 node = ice_sched_find_node_by_teid(pi->root, teid2);
1412 if (node)
1413 node->tc_num = j;
1414 }
1415 return status;
1416 }
1417
1418 /**
1419 * ice_query_port_ets - query port ETS configuration
1420 * @pi: port information structure
1421 * @buf: pointer to buffer
1422 * @buf_size: buffer size in bytes
1423 * @cd: pointer to command details structure or NULL
1424 *
1425 * query current port ETS configuration and update the
1426 * SW DB with the TC changes
1427 */
1428 enum ice_status
1429 ice_query_port_ets(struct ice_port_info *pi,
1430 struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1431 struct ice_sq_cd *cd)
1432 {
1433 enum ice_status status;
1434
1435 mutex_lock(&pi->sched_lock);
1436 status = ice_aq_query_port_ets(pi, buf, buf_size, cd);
1437 if (!status)
1438 status = ice_update_port_tc_tree_cfg(pi, buf);
1439 mutex_unlock(&pi->sched_lock);
1440 return status;
1441 }
Linux with added FPC-III support