1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
2 /* QLogic qed NIC Driver
3  * Copyright (c) 2015-2017  QLogic Corporation
4  * Copyright (c) 2019-2020 Marvell International Ltd.
5  */
6 
7 #include <linux/types.h>
8 #include <asm/byteorder.h>
9 #include <linux/bitops.h>
10 #include <linux/dcbnl.h>
11 #include <linux/errno.h>
12 #include <linux/kernel.h>
13 #include <linux/slab.h>
14 #include <linux/string.h>
15 #include "qed.h"
16 #include "qed_cxt.h"
17 #include "qed_dcbx.h"
18 #include "qed_hsi.h"
19 #include "qed_sp.h"
20 #include "qed_sriov.h"
21 #include "qed_rdma.h"
22 #ifdef CONFIG_DCB
23 #include <linux/qed/qed_eth_if.h>
24 #endif
25 
26 #define QED_DCBX_MAX_MIB_READ_TRY       (100)
27 #define QED_ETH_TYPE_DEFAULT            (0)
28 #define QED_ETH_TYPE_ROCE               (0x8915)
29 #define QED_UDP_PORT_TYPE_ROCE_V2       (0x12B7)
30 #define QED_ETH_TYPE_FCOE               (0x8906)
31 #define QED_TCP_PORT_ISCSI              (0xCBC)
32 
33 #define QED_DCBX_INVALID_PRIORITY       0xFF
34 
35 /* Get Traffic Class from priority traffic class table, 4 bits represent
36  * the traffic class corresponding to the priority.
37  */
38 #define QED_DCBX_PRIO2TC(prio_tc_tbl, prio) \
39 	((u32)(prio_tc_tbl >> ((7 - prio) * 4)) & 0x7)
40 
41 static const struct qed_dcbx_app_metadata qed_dcbx_app_update[] = {
42 	{DCBX_PROTOCOL_ISCSI, "ISCSI", QED_PCI_ISCSI},
43 	{DCBX_PROTOCOL_FCOE, "FCOE", QED_PCI_FCOE},
44 	{DCBX_PROTOCOL_ROCE, "ROCE", QED_PCI_ETH_ROCE},
45 	{DCBX_PROTOCOL_ROCE_V2, "ROCE_V2", QED_PCI_ETH_ROCE},
46 	{DCBX_PROTOCOL_ETH, "ETH", QED_PCI_ETH},
47 };
48 
49 static bool qed_dcbx_app_ethtype(u32 app_info_bitmap)
50 {
51 	return !!(QED_MFW_GET_FIELD(app_info_bitmap, DCBX_APP_SF) ==
52 		  DCBX_APP_SF_ETHTYPE);
53 }
54 
55 static bool qed_dcbx_ieee_app_ethtype(u32 app_info_bitmap)
56 {
57 	u8 mfw_val = QED_MFW_GET_FIELD(app_info_bitmap, DCBX_APP_SF_IEEE);
58 
59 	/* Old MFW */
60 	if (mfw_val == DCBX_APP_SF_IEEE_RESERVED)
61 		return qed_dcbx_app_ethtype(app_info_bitmap);
62 
63 	return !!(mfw_val == DCBX_APP_SF_IEEE_ETHTYPE);
64 }
65 
66 static bool qed_dcbx_app_port(u32 app_info_bitmap)
67 {
68 	return !!(QED_MFW_GET_FIELD(app_info_bitmap, DCBX_APP_SF) ==
69 		  DCBX_APP_SF_PORT);
70 }
71 
72 static bool qed_dcbx_ieee_app_port(u32 app_info_bitmap, u8 type)
73 {
74 	u8 mfw_val = QED_MFW_GET_FIELD(app_info_bitmap, DCBX_APP_SF_IEEE);
75 
76 	/* Old MFW */
77 	if (mfw_val == DCBX_APP_SF_IEEE_RESERVED)
78 		return qed_dcbx_app_port(app_info_bitmap);
79 
80 	return !!(mfw_val == type || mfw_val == DCBX_APP_SF_IEEE_TCP_UDP_PORT);
81 }
82 
83 static bool qed_dcbx_default_tlv(u32 app_info_bitmap, u16 proto_id, bool ieee)
84 {
85 	bool ethtype;
86 
87 	if (ieee)
88 		ethtype = qed_dcbx_ieee_app_ethtype(app_info_bitmap);
89 	else
90 		ethtype = qed_dcbx_app_ethtype(app_info_bitmap);
91 
92 	return !!(ethtype && (proto_id == QED_ETH_TYPE_DEFAULT));
93 }
94 
95 static bool qed_dcbx_iscsi_tlv(u32 app_info_bitmap, u16 proto_id, bool ieee)
96 {
97 	bool port;
98 
99 	if (ieee)
100 		port = qed_dcbx_ieee_app_port(app_info_bitmap,
101 					      DCBX_APP_SF_IEEE_TCP_PORT);
102 	else
103 		port = qed_dcbx_app_port(app_info_bitmap);
104 
105 	return !!(port && (proto_id == QED_TCP_PORT_ISCSI));
106 }
107 
108 static bool qed_dcbx_fcoe_tlv(u32 app_info_bitmap, u16 proto_id, bool ieee)
109 {
110 	bool ethtype;
111 
112 	if (ieee)
113 		ethtype = qed_dcbx_ieee_app_ethtype(app_info_bitmap);
114 	else
115 		ethtype = qed_dcbx_app_ethtype(app_info_bitmap);
116 
117 	return !!(ethtype && (proto_id == QED_ETH_TYPE_FCOE));
118 }
119 
120 static bool qed_dcbx_roce_tlv(u32 app_info_bitmap, u16 proto_id, bool ieee)
121 {
122 	bool ethtype;
123 
124 	if (ieee)
125 		ethtype = qed_dcbx_ieee_app_ethtype(app_info_bitmap);
126 	else
127 		ethtype = qed_dcbx_app_ethtype(app_info_bitmap);
128 
129 	return !!(ethtype && (proto_id == QED_ETH_TYPE_ROCE));
130 }
131 
132 static bool qed_dcbx_roce_v2_tlv(u32 app_info_bitmap, u16 proto_id, bool ieee)
133 {
134 	bool port;
135 
136 	if (ieee)
137 		port = qed_dcbx_ieee_app_port(app_info_bitmap,
138 					      DCBX_APP_SF_IEEE_UDP_PORT);
139 	else
140 		port = qed_dcbx_app_port(app_info_bitmap);
141 
142 	return !!(port && (proto_id == QED_UDP_PORT_TYPE_ROCE_V2));
143 }
144 
145 static void
146 qed_dcbx_dp_protocol(struct qed_hwfn *p_hwfn, struct qed_dcbx_results *p_data)
147 {
148 	enum dcbx_protocol_type id;
149 	int i;
150 
151 	DP_VERBOSE(p_hwfn, QED_MSG_DCB, "DCBX negotiated: %d\n",
152 		   p_data->dcbx_enabled);
153 
154 	for (i = 0; i < ARRAY_SIZE(qed_dcbx_app_update); i++) {
155 		id = qed_dcbx_app_update[i].id;
156 
157 		DP_VERBOSE(p_hwfn, QED_MSG_DCB,
158 			   "%s info: update %d, enable %d, prio %d, tc %d, num_tc %d\n",
159 			   qed_dcbx_app_update[i].name, p_data->arr[id].update,
160 			   p_data->arr[id].enable, p_data->arr[id].priority,
161 			   p_data->arr[id].tc, p_hwfn->hw_info.num_active_tc);
162 	}
163 }
164 
165 static void
166 qed_dcbx_set_params(struct qed_dcbx_results *p_data,
167 		    struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
168 		    bool app_tlv, bool enable, u8 prio, u8 tc,
169 		    enum dcbx_protocol_type type,
170 		    enum qed_pci_personality personality)
171 {
172 	/* PF update ramrod data */
173 	p_data->arr[type].enable = enable;
174 	p_data->arr[type].priority = prio;
175 	p_data->arr[type].tc = tc;
176 	if (enable)
177 		p_data->arr[type].update = UPDATE_DCB;
178 	else
179 		p_data->arr[type].update = DONT_UPDATE_DCB_DSCP;
180 
181 	if (test_bit(QED_MF_DONT_ADD_VLAN0_TAG, &p_hwfn->cdev->mf_bits))
182 		p_data->arr[type].dont_add_vlan0 = true;
183 
184 	/* QM reconf data */
185 	if (app_tlv && p_hwfn->hw_info.personality == personality)
186 		qed_hw_info_set_offload_tc(&p_hwfn->hw_info, tc);
187 
188 	/* Configure dcbx vlan priority in doorbell block for roce EDPM */
189 	if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) &&
190 	    type == DCBX_PROTOCOL_ROCE) {
191 		qed_wr(p_hwfn, p_ptt, DORQ_REG_TAG1_OVRD_MODE, 1);
192 		qed_wr(p_hwfn, p_ptt, DORQ_REG_PF_PCP_BB_K2, prio << 1);
193 	}
194 }
195 
196 /* Update app protocol data and hw_info fields with the TLV info */
197 static void
198 qed_dcbx_update_app_info(struct qed_dcbx_results *p_data,
199 			 struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
200 			 bool app_tlv, bool enable, u8 prio, u8 tc,
201 			 enum dcbx_protocol_type type)
202 {
203 	enum qed_pci_personality personality;
204 	enum dcbx_protocol_type id;
205 	int i;
206 
207 	for (i = 0; i < ARRAY_SIZE(qed_dcbx_app_update); i++) {
208 		id = qed_dcbx_app_update[i].id;
209 
210 		if (type != id)
211 			continue;
212 
213 		personality = qed_dcbx_app_update[i].personality;
214 
215 		qed_dcbx_set_params(p_data, p_hwfn, p_ptt, app_tlv, enable,
216 				    prio, tc, type, personality);
217 	}
218 }
219 
220 static bool
221 qed_dcbx_get_app_protocol_type(struct qed_hwfn *p_hwfn,
222 			       u32 app_prio_bitmap,
223 			       u16 id, enum dcbx_protocol_type *type, bool ieee)
224 {
225 	if (qed_dcbx_fcoe_tlv(app_prio_bitmap, id, ieee)) {
226 		*type = DCBX_PROTOCOL_FCOE;
227 	} else if (qed_dcbx_roce_tlv(app_prio_bitmap, id, ieee)) {
228 		*type = DCBX_PROTOCOL_ROCE;
229 	} else if (qed_dcbx_iscsi_tlv(app_prio_bitmap, id, ieee)) {
230 		*type = DCBX_PROTOCOL_ISCSI;
231 	} else if (qed_dcbx_default_tlv(app_prio_bitmap, id, ieee)) {
232 		*type = DCBX_PROTOCOL_ETH;
233 	} else if (qed_dcbx_roce_v2_tlv(app_prio_bitmap, id, ieee)) {
234 		*type = DCBX_PROTOCOL_ROCE_V2;
235 	} else {
236 		*type = DCBX_MAX_PROTOCOL_TYPE;
237 		DP_VERBOSE(p_hwfn, QED_MSG_DCB,
238 			   "No action required, App TLV entry = 0x%x\n",
239 			   app_prio_bitmap);
240 		return false;
241 	}
242 
243 	return true;
244 }
245 
246 /* Parse app TLV's to update TC information in hw_info structure for
247  * reconfiguring QM. Get protocol specific data for PF update ramrod command.
248  */
249 static int
250 qed_dcbx_process_tlv(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
251 		     struct qed_dcbx_results *p_data,
252 		     struct dcbx_app_priority_entry *p_tbl,
253 		     u32 pri_tc_tbl, int count, u8 dcbx_version)
254 {
255 	enum dcbx_protocol_type type;
256 	bool enable, ieee, eth_tlv;
257 	u8 tc, priority_map;
258 	u16 protocol_id;
259 	int priority;
260 	int i;
261 
262 	DP_VERBOSE(p_hwfn, QED_MSG_DCB, "Num APP entries = %d\n", count);
263 
264 	ieee = (dcbx_version == DCBX_CONFIG_VERSION_IEEE);
265 	eth_tlv = false;
266 	/* Parse APP TLV */
267 	for (i = 0; i < count; i++) {
268 		protocol_id = QED_MFW_GET_FIELD(p_tbl[i].entry,
269 						DCBX_APP_PROTOCOL_ID);
270 		priority_map = QED_MFW_GET_FIELD(p_tbl[i].entry,
271 						 DCBX_APP_PRI_MAP);
272 		priority = ffs(priority_map) - 1;
273 		if (priority < 0) {
274 			DP_ERR(p_hwfn, "Invalid priority\n");
275 			return -EINVAL;
276 		}
277 
278 		tc = QED_DCBX_PRIO2TC(pri_tc_tbl, priority);
279 		if (qed_dcbx_get_app_protocol_type(p_hwfn, p_tbl[i].entry,
280 						   protocol_id, &type, ieee)) {
281 			/* ETH always have the enable bit reset, as it gets
282 			 * vlan information per packet. For other protocols,
283 			 * should be set according to the dcbx_enabled
284 			 * indication, but we only got here if there was an
285 			 * app tlv for the protocol, so dcbx must be enabled.
286 			 */
287 			if (type == DCBX_PROTOCOL_ETH) {
288 				enable = false;
289 				eth_tlv = true;
290 			} else {
291 				enable = true;
292 			}
293 
294 			qed_dcbx_update_app_info(p_data, p_hwfn, p_ptt, true,
295 						 enable, priority, tc, type);
296 		}
297 	}
298 
299 	/* If Eth TLV is not detected, use UFP TC as default TC */
300 	if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) && !eth_tlv)
301 		p_data->arr[DCBX_PROTOCOL_ETH].tc = p_hwfn->ufp_info.tc;
302 
303 	/* Update ramrod protocol data and hw_info fields
304 	 * with default info when corresponding APP TLV's are not detected.
305 	 * The enabled field has a different logic for ethernet as only for
306 	 * ethernet dcb should disabled by default, as the information arrives
307 	 * from the OS (unless an explicit app tlv was present).
308 	 */
309 	tc = p_data->arr[DCBX_PROTOCOL_ETH].tc;
310 	priority = p_data->arr[DCBX_PROTOCOL_ETH].priority;
311 	for (type = 0; type < DCBX_MAX_PROTOCOL_TYPE; type++) {
312 		if (p_data->arr[type].update)
313 			continue;
314 
315 		enable = (type == DCBX_PROTOCOL_ETH) ? false : !!dcbx_version;
316 		qed_dcbx_update_app_info(p_data, p_hwfn, p_ptt, false, enable,
317 					 priority, tc, type);
318 	}
319 
320 	return 0;
321 }
322 
323 /* Parse app TLV's to update TC information in hw_info structure for
324  * reconfiguring QM. Get protocol specific data for PF update ramrod command.
325  */
326 static int
327 qed_dcbx_process_mib_info(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
328 {
329 	struct dcbx_app_priority_feature *p_app;
330 	struct dcbx_app_priority_entry *p_tbl;
331 	struct qed_dcbx_results data = { 0 };
332 	struct dcbx_ets_feature *p_ets;
333 	struct qed_hw_info *p_info;
334 	u32 pri_tc_tbl, flags;
335 	u8 dcbx_version;
336 	int num_entries;
337 	int rc = 0;
338 
339 	flags = p_hwfn->p_dcbx_info->operational.flags;
340 	dcbx_version = QED_MFW_GET_FIELD(flags, DCBX_CONFIG_VERSION);
341 
342 	p_app = &p_hwfn->p_dcbx_info->operational.features.app;
343 	p_tbl = p_app->app_pri_tbl;
344 
345 	p_ets = &p_hwfn->p_dcbx_info->operational.features.ets;
346 	pri_tc_tbl = p_ets->pri_tc_tbl[0];
347 
348 	p_info = &p_hwfn->hw_info;
349 	num_entries = QED_MFW_GET_FIELD(p_app->flags, DCBX_APP_NUM_ENTRIES);
350 
351 	rc = qed_dcbx_process_tlv(p_hwfn, p_ptt, &data, p_tbl, pri_tc_tbl,
352 				  num_entries, dcbx_version);
353 	if (rc)
354 		return rc;
355 
356 	p_info->num_active_tc = QED_MFW_GET_FIELD(p_ets->flags,
357 						  DCBX_ETS_MAX_TCS);
358 	p_hwfn->qm_info.ooo_tc = QED_MFW_GET_FIELD(p_ets->flags, DCBX_OOO_TC);
359 	data.pf_id = p_hwfn->rel_pf_id;
360 	data.dcbx_enabled = !!dcbx_version;
361 
362 	qed_dcbx_dp_protocol(p_hwfn, &data);
363 
364 	memcpy(&p_hwfn->p_dcbx_info->results, &data,
365 	       sizeof(struct qed_dcbx_results));
366 
367 	return 0;
368 }
369 
370 static int
371 qed_dcbx_copy_mib(struct qed_hwfn *p_hwfn,
372 		  struct qed_ptt *p_ptt,
373 		  struct qed_dcbx_mib_meta_data *p_data,
374 		  enum qed_mib_read_type type)
375 {
376 	u32 prefix_seq_num, suffix_seq_num;
377 	int read_count = 0;
378 	int rc = 0;
379 
380 	/* The data is considered to be valid only if both sequence numbers are
381 	 * the same.
382 	 */
383 	do {
384 		if (type == QED_DCBX_REMOTE_LLDP_MIB) {
385 			qed_memcpy_from(p_hwfn, p_ptt, p_data->lldp_remote,
386 					p_data->addr, p_data->size);
387 			prefix_seq_num = p_data->lldp_remote->prefix_seq_num;
388 			suffix_seq_num = p_data->lldp_remote->suffix_seq_num;
389 		} else {
390 			qed_memcpy_from(p_hwfn, p_ptt, p_data->mib,
391 					p_data->addr, p_data->size);
392 			prefix_seq_num = p_data->mib->prefix_seq_num;
393 			suffix_seq_num = p_data->mib->suffix_seq_num;
394 		}
395 		read_count++;
396 
397 		DP_VERBOSE(p_hwfn,
398 			   QED_MSG_DCB,
399 			   "mib type = %d, try count = %d prefix seq num  = %d suffix seq num = %d\n",
400 			   type, read_count, prefix_seq_num, suffix_seq_num);
401 	} while ((prefix_seq_num != suffix_seq_num) &&
402 		 (read_count < QED_DCBX_MAX_MIB_READ_TRY));
403 
404 	if (read_count >= QED_DCBX_MAX_MIB_READ_TRY) {
405 		DP_ERR(p_hwfn,
406 		       "MIB read err, mib type = %d, try count = %d prefix seq num = %d suffix seq num = %d\n",
407 		       type, read_count, prefix_seq_num, suffix_seq_num);
408 		rc = -EIO;
409 	}
410 
411 	return rc;
412 }
413 
414 static void
415 qed_dcbx_get_priority_info(struct qed_hwfn *p_hwfn,
416 			   struct qed_dcbx_app_prio *p_prio,
417 			   struct qed_dcbx_results *p_results)
418 {
419 	u8 val;
420 
421 	p_prio->roce = QED_DCBX_INVALID_PRIORITY;
422 	p_prio->roce_v2 = QED_DCBX_INVALID_PRIORITY;
423 	p_prio->iscsi = QED_DCBX_INVALID_PRIORITY;
424 	p_prio->fcoe = QED_DCBX_INVALID_PRIORITY;
425 
426 	if (p_results->arr[DCBX_PROTOCOL_ROCE].update &&
427 	    p_results->arr[DCBX_PROTOCOL_ROCE].enable)
428 		p_prio->roce = p_results->arr[DCBX_PROTOCOL_ROCE].priority;
429 
430 	if (p_results->arr[DCBX_PROTOCOL_ROCE_V2].update &&
431 	    p_results->arr[DCBX_PROTOCOL_ROCE_V2].enable) {
432 		val = p_results->arr[DCBX_PROTOCOL_ROCE_V2].priority;
433 		p_prio->roce_v2 = val;
434 	}
435 
436 	if (p_results->arr[DCBX_PROTOCOL_ISCSI].update &&
437 	    p_results->arr[DCBX_PROTOCOL_ISCSI].enable)
438 		p_prio->iscsi = p_results->arr[DCBX_PROTOCOL_ISCSI].priority;
439 
440 	if (p_results->arr[DCBX_PROTOCOL_FCOE].update &&
441 	    p_results->arr[DCBX_PROTOCOL_FCOE].enable)
442 		p_prio->fcoe = p_results->arr[DCBX_PROTOCOL_FCOE].priority;
443 
444 	if (p_results->arr[DCBX_PROTOCOL_ETH].update &&
445 	    p_results->arr[DCBX_PROTOCOL_ETH].enable)
446 		p_prio->eth = p_results->arr[DCBX_PROTOCOL_ETH].priority;
447 
448 	DP_VERBOSE(p_hwfn, QED_MSG_DCB,
449 		   "Priorities: iscsi %d, roce %d, roce v2 %d, fcoe %d, eth %d\n",
450 		   p_prio->iscsi, p_prio->roce, p_prio->roce_v2, p_prio->fcoe,
451 		   p_prio->eth);
452 }
453 
454 static void
455 qed_dcbx_get_app_data(struct qed_hwfn *p_hwfn,
456 		      struct dcbx_app_priority_feature *p_app,
457 		      struct dcbx_app_priority_entry *p_tbl,
458 		      struct qed_dcbx_params *p_params, bool ieee)
459 {
460 	struct qed_app_entry *entry;
461 	u8 pri_map;
462 	int i;
463 
464 	p_params->app_willing = QED_MFW_GET_FIELD(p_app->flags,
465 						  DCBX_APP_WILLING);
466 	p_params->app_valid = QED_MFW_GET_FIELD(p_app->flags, DCBX_APP_ENABLED);
467 	p_params->app_error = QED_MFW_GET_FIELD(p_app->flags, DCBX_APP_ERROR);
468 	p_params->num_app_entries = QED_MFW_GET_FIELD(p_app->flags,
469 						      DCBX_APP_NUM_ENTRIES);
470 	for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
471 		entry = &p_params->app_entry[i];
472 		if (ieee) {
473 			u8 sf_ieee;
474 			u32 val;
475 
476 			sf_ieee = QED_MFW_GET_FIELD(p_tbl[i].entry,
477 						    DCBX_APP_SF_IEEE);
478 			switch (sf_ieee) {
479 			case DCBX_APP_SF_IEEE_RESERVED:
480 				/* Old MFW */
481 				val = QED_MFW_GET_FIELD(p_tbl[i].entry,
482 							DCBX_APP_SF);
483 				entry->sf_ieee = val ?
484 				    QED_DCBX_SF_IEEE_TCP_UDP_PORT :
485 				    QED_DCBX_SF_IEEE_ETHTYPE;
486 				break;
487 			case DCBX_APP_SF_IEEE_ETHTYPE:
488 				entry->sf_ieee = QED_DCBX_SF_IEEE_ETHTYPE;
489 				break;
490 			case DCBX_APP_SF_IEEE_TCP_PORT:
491 				entry->sf_ieee = QED_DCBX_SF_IEEE_TCP_PORT;
492 				break;
493 			case DCBX_APP_SF_IEEE_UDP_PORT:
494 				entry->sf_ieee = QED_DCBX_SF_IEEE_UDP_PORT;
495 				break;
496 			case DCBX_APP_SF_IEEE_TCP_UDP_PORT:
497 				entry->sf_ieee = QED_DCBX_SF_IEEE_TCP_UDP_PORT;
498 				break;
499 			}
500 		} else {
501 			entry->ethtype = !(QED_MFW_GET_FIELD(p_tbl[i].entry,
502 							     DCBX_APP_SF));
503 		}
504 
505 		pri_map = QED_MFW_GET_FIELD(p_tbl[i].entry, DCBX_APP_PRI_MAP);
506 		entry->prio = ffs(pri_map) - 1;
507 		entry->proto_id = QED_MFW_GET_FIELD(p_tbl[i].entry,
508 						    DCBX_APP_PROTOCOL_ID);
509 		qed_dcbx_get_app_protocol_type(p_hwfn, p_tbl[i].entry,
510 					       entry->proto_id,
511 					       &entry->proto_type, ieee);
512 	}
513 
514 	DP_VERBOSE(p_hwfn, QED_MSG_DCB,
515 		   "APP params: willing %d, valid %d error = %d\n",
516 		   p_params->app_willing, p_params->app_valid,
517 		   p_params->app_error);
518 }
519 
520 static void
521 qed_dcbx_get_pfc_data(struct qed_hwfn *p_hwfn,
522 		      u32 pfc, struct qed_dcbx_params *p_params)
523 {
524 	u8 pfc_map;
525 
526 	p_params->pfc.willing = QED_MFW_GET_FIELD(pfc, DCBX_PFC_WILLING);
527 	p_params->pfc.max_tc = QED_MFW_GET_FIELD(pfc, DCBX_PFC_CAPS);
528 	p_params->pfc.enabled = QED_MFW_GET_FIELD(pfc, DCBX_PFC_ENABLED);
529 	pfc_map = QED_MFW_GET_FIELD(pfc, DCBX_PFC_PRI_EN_BITMAP);
530 	p_params->pfc.prio[0] = !!(pfc_map & DCBX_PFC_PRI_EN_BITMAP_PRI_0);
531 	p_params->pfc.prio[1] = !!(pfc_map & DCBX_PFC_PRI_EN_BITMAP_PRI_1);
532 	p_params->pfc.prio[2] = !!(pfc_map & DCBX_PFC_PRI_EN_BITMAP_PRI_2);
533 	p_params->pfc.prio[3] = !!(pfc_map & DCBX_PFC_PRI_EN_BITMAP_PRI_3);
534 	p_params->pfc.prio[4] = !!(pfc_map & DCBX_PFC_PRI_EN_BITMAP_PRI_4);
535 	p_params->pfc.prio[5] = !!(pfc_map & DCBX_PFC_PRI_EN_BITMAP_PRI_5);
536 	p_params->pfc.prio[6] = !!(pfc_map & DCBX_PFC_PRI_EN_BITMAP_PRI_6);
537 	p_params->pfc.prio[7] = !!(pfc_map & DCBX_PFC_PRI_EN_BITMAP_PRI_7);
538 
539 	DP_VERBOSE(p_hwfn, QED_MSG_DCB,
540 		   "PFC params: willing %d, pfc_bitmap %u max_tc = %u enabled = %d\n",
541 		   p_params->pfc.willing, pfc_map, p_params->pfc.max_tc,
542 		   p_params->pfc.enabled);
543 }
544 
545 static void
546 qed_dcbx_get_ets_data(struct qed_hwfn *p_hwfn,
547 		      struct dcbx_ets_feature *p_ets,
548 		      struct qed_dcbx_params *p_params)
549 {
550 	__be32 bw_map[2], tsa_map[2];
551 	u32 pri_map;
552 	int i;
553 
554 	p_params->ets_willing = QED_MFW_GET_FIELD(p_ets->flags,
555 						  DCBX_ETS_WILLING);
556 	p_params->ets_enabled = QED_MFW_GET_FIELD(p_ets->flags,
557 						  DCBX_ETS_ENABLED);
558 	p_params->ets_cbs = QED_MFW_GET_FIELD(p_ets->flags, DCBX_ETS_CBS);
559 	p_params->max_ets_tc = QED_MFW_GET_FIELD(p_ets->flags,
560 						 DCBX_ETS_MAX_TCS);
561 	DP_VERBOSE(p_hwfn, QED_MSG_DCB,
562 		   "ETS params: willing %d, enabled = %d ets_cbs %d pri_tc_tbl_0 %x max_ets_tc %d\n",
563 		   p_params->ets_willing, p_params->ets_enabled,
564 		   p_params->ets_cbs, p_ets->pri_tc_tbl[0],
565 		   p_params->max_ets_tc);
566 
567 	if (p_params->ets_enabled && !p_params->max_ets_tc) {
568 		p_params->max_ets_tc = QED_MAX_PFC_PRIORITIES;
569 		DP_VERBOSE(p_hwfn, QED_MSG_DCB,
570 			   "ETS params: max_ets_tc is forced to %d\n",
571 		p_params->max_ets_tc);
572 	}
573 
574 	/* 8 bit tsa and bw data corresponding to each of the 8 TC's are
575 	 * encoded in a type u32 array of size 2.
576 	 */
577 	cpu_to_be32_array(bw_map, p_ets->tc_bw_tbl, 2);
578 	cpu_to_be32_array(tsa_map, p_ets->tc_tsa_tbl, 2);
579 	pri_map = p_ets->pri_tc_tbl[0];
580 
581 	for (i = 0; i < QED_MAX_PFC_PRIORITIES; i++) {
582 		p_params->ets_tc_bw_tbl[i] = ((u8 *)bw_map)[i];
583 		p_params->ets_tc_tsa_tbl[i] = ((u8 *)tsa_map)[i];
584 		p_params->ets_pri_tc_tbl[i] = QED_DCBX_PRIO2TC(pri_map, i);
585 		DP_VERBOSE(p_hwfn, QED_MSG_DCB,
586 			   "elem %d  bw_tbl %x tsa_tbl %x\n",
587 			   i, p_params->ets_tc_bw_tbl[i],
588 			   p_params->ets_tc_tsa_tbl[i]);
589 	}
590 }
591 
592 static void
593 qed_dcbx_get_common_params(struct qed_hwfn *p_hwfn,
594 			   struct dcbx_app_priority_feature *p_app,
595 			   struct dcbx_app_priority_entry *p_tbl,
596 			   struct dcbx_ets_feature *p_ets,
597 			   u32 pfc, struct qed_dcbx_params *p_params, bool ieee)
598 {
599 	qed_dcbx_get_app_data(p_hwfn, p_app, p_tbl, p_params, ieee);
600 	qed_dcbx_get_ets_data(p_hwfn, p_ets, p_params);
601 	qed_dcbx_get_pfc_data(p_hwfn, pfc, p_params);
602 }
603 
604 static void
605 qed_dcbx_get_local_params(struct qed_hwfn *p_hwfn, struct qed_dcbx_get *params)
606 {
607 	struct dcbx_features *p_feat;
608 
609 	p_feat = &p_hwfn->p_dcbx_info->local_admin.features;
610 	qed_dcbx_get_common_params(p_hwfn, &p_feat->app,
611 				   p_feat->app.app_pri_tbl, &p_feat->ets,
612 				   p_feat->pfc, &params->local.params, false);
613 	params->local.valid = true;
614 }
615 
616 static void
617 qed_dcbx_get_remote_params(struct qed_hwfn *p_hwfn, struct qed_dcbx_get *params)
618 {
619 	struct dcbx_features *p_feat;
620 
621 	p_feat = &p_hwfn->p_dcbx_info->remote.features;
622 	qed_dcbx_get_common_params(p_hwfn, &p_feat->app,
623 				   p_feat->app.app_pri_tbl, &p_feat->ets,
624 				   p_feat->pfc, &params->remote.params, false);
625 	params->remote.valid = true;
626 }
627 
628 static void
629 qed_dcbx_get_operational_params(struct qed_hwfn *p_hwfn,
630 				struct qed_dcbx_get *params)
631 {
632 	struct qed_dcbx_operational_params *p_operational;
633 	struct qed_dcbx_results *p_results;
634 	struct dcbx_features *p_feat;
635 	bool enabled, err;
636 	u32 flags;
637 	bool val;
638 
639 	flags = p_hwfn->p_dcbx_info->operational.flags;
640 
641 	/* If DCBx version is non zero, then negotiation
642 	 * was successfuly performed
643 	 */
644 	p_operational = &params->operational;
645 	enabled = !!(QED_MFW_GET_FIELD(flags, DCBX_CONFIG_VERSION) !=
646 		     DCBX_CONFIG_VERSION_DISABLED);
647 	if (!enabled) {
648 		p_operational->enabled = enabled;
649 		p_operational->valid = false;
650 		DP_VERBOSE(p_hwfn, QED_MSG_DCB, "Dcbx is disabled\n");
651 		return;
652 	}
653 
654 	p_feat = &p_hwfn->p_dcbx_info->operational.features;
655 	p_results = &p_hwfn->p_dcbx_info->results;
656 
657 	val = !!(QED_MFW_GET_FIELD(flags, DCBX_CONFIG_VERSION) ==
658 		 DCBX_CONFIG_VERSION_IEEE);
659 	p_operational->ieee = val;
660 	val = !!(QED_MFW_GET_FIELD(flags, DCBX_CONFIG_VERSION) ==
661 		 DCBX_CONFIG_VERSION_CEE);
662 	p_operational->cee = val;
663 
664 	val = !!(QED_MFW_GET_FIELD(flags, DCBX_CONFIG_VERSION) ==
665 		 DCBX_CONFIG_VERSION_STATIC);
666 	p_operational->local = val;
667 
668 	DP_VERBOSE(p_hwfn, QED_MSG_DCB,
669 		   "Version support: ieee %d, cee %d, static %d\n",
670 		   p_operational->ieee, p_operational->cee,
671 		   p_operational->local);
672 
673 	qed_dcbx_get_common_params(p_hwfn, &p_feat->app,
674 				   p_feat->app.app_pri_tbl, &p_feat->ets,
675 				   p_feat->pfc, &params->operational.params,
676 				   p_operational->ieee);
677 	qed_dcbx_get_priority_info(p_hwfn, &p_operational->app_prio, p_results);
678 	err = QED_MFW_GET_FIELD(p_feat->app.flags, DCBX_APP_ERROR);
679 	p_operational->err = err;
680 	p_operational->enabled = enabled;
681 	p_operational->valid = true;
682 }
683 
684 static void
685 qed_dcbx_get_local_lldp_params(struct qed_hwfn *p_hwfn,
686 			       struct qed_dcbx_get *params)
687 {
688 	struct lldp_config_params_s *p_local;
689 
690 	p_local = &p_hwfn->p_dcbx_info->lldp_local[LLDP_NEAREST_BRIDGE];
691 
692 	memcpy(params->lldp_local.local_chassis_id, p_local->local_chassis_id,
693 	       sizeof(p_local->local_chassis_id));
694 	memcpy(params->lldp_local.local_port_id, p_local->local_port_id,
695 	       sizeof(p_local->local_port_id));
696 }
697 
698 static void
699 qed_dcbx_get_remote_lldp_params(struct qed_hwfn *p_hwfn,
700 				struct qed_dcbx_get *params)
701 {
702 	struct lldp_status_params_s *p_remote;
703 
704 	p_remote = &p_hwfn->p_dcbx_info->lldp_remote[LLDP_NEAREST_BRIDGE];
705 
706 	memcpy(params->lldp_remote.peer_chassis_id, p_remote->peer_chassis_id,
707 	       sizeof(p_remote->peer_chassis_id));
708 	memcpy(params->lldp_remote.peer_port_id, p_remote->peer_port_id,
709 	       sizeof(p_remote->peer_port_id));
710 }
711 
712 static int
713 qed_dcbx_get_params(struct qed_hwfn *p_hwfn, struct qed_dcbx_get *p_params,
714 		    enum qed_mib_read_type type)
715 {
716 	switch (type) {
717 	case QED_DCBX_REMOTE_MIB:
718 		qed_dcbx_get_remote_params(p_hwfn, p_params);
719 		break;
720 	case QED_DCBX_LOCAL_MIB:
721 		qed_dcbx_get_local_params(p_hwfn, p_params);
722 		break;
723 	case QED_DCBX_OPERATIONAL_MIB:
724 		qed_dcbx_get_operational_params(p_hwfn, p_params);
725 		break;
726 	case QED_DCBX_REMOTE_LLDP_MIB:
727 		qed_dcbx_get_remote_lldp_params(p_hwfn, p_params);
728 		break;
729 	case QED_DCBX_LOCAL_LLDP_MIB:
730 		qed_dcbx_get_local_lldp_params(p_hwfn, p_params);
731 		break;
732 	default:
733 		DP_ERR(p_hwfn, "MIB read err, unknown mib type %d\n", type);
734 		return -EINVAL;
735 	}
736 
737 	return 0;
738 }
739 
740 static int
741 qed_dcbx_read_local_lldp_mib(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
742 {
743 	struct qed_dcbx_mib_meta_data data;
744 
745 	memset(&data, 0, sizeof(data));
746 	data.addr = p_hwfn->mcp_info->port_addr + offsetof(struct public_port,
747 							   lldp_config_params);
748 	data.lldp_local = p_hwfn->p_dcbx_info->lldp_local;
749 	data.size = sizeof(struct lldp_config_params_s);
750 	qed_memcpy_from(p_hwfn, p_ptt, data.lldp_local, data.addr, data.size);
751 
752 	return 0;
753 }
754 
755 static int
756 qed_dcbx_read_remote_lldp_mib(struct qed_hwfn *p_hwfn,
757 			      struct qed_ptt *p_ptt,
758 			      enum qed_mib_read_type type)
759 {
760 	struct qed_dcbx_mib_meta_data data;
761 	int rc = 0;
762 
763 	memset(&data, 0, sizeof(data));
764 	data.addr = p_hwfn->mcp_info->port_addr + offsetof(struct public_port,
765 							   lldp_status_params);
766 	data.lldp_remote = p_hwfn->p_dcbx_info->lldp_remote;
767 	data.size = sizeof(struct lldp_status_params_s);
768 	rc = qed_dcbx_copy_mib(p_hwfn, p_ptt, &data, type);
769 
770 	return rc;
771 }
772 
773 static int
774 qed_dcbx_read_operational_mib(struct qed_hwfn *p_hwfn,
775 			      struct qed_ptt *p_ptt,
776 			      enum qed_mib_read_type type)
777 {
778 	struct qed_dcbx_mib_meta_data data;
779 	int rc = 0;
780 
781 	memset(&data, 0, sizeof(data));
782 	data.addr = p_hwfn->mcp_info->port_addr +
783 		    offsetof(struct public_port, operational_dcbx_mib);
784 	data.mib = &p_hwfn->p_dcbx_info->operational;
785 	data.size = sizeof(struct dcbx_mib);
786 	rc = qed_dcbx_copy_mib(p_hwfn, p_ptt, &data, type);
787 
788 	return rc;
789 }
790 
791 static int
792 qed_dcbx_read_remote_mib(struct qed_hwfn *p_hwfn,
793 			 struct qed_ptt *p_ptt, enum qed_mib_read_type type)
794 {
795 	struct qed_dcbx_mib_meta_data data;
796 	int rc = 0;
797 
798 	memset(&data, 0, sizeof(data));
799 	data.addr = p_hwfn->mcp_info->port_addr +
800 		    offsetof(struct public_port, remote_dcbx_mib);
801 	data.mib = &p_hwfn->p_dcbx_info->remote;
802 	data.size = sizeof(struct dcbx_mib);
803 	rc = qed_dcbx_copy_mib(p_hwfn, p_ptt, &data, type);
804 
805 	return rc;
806 }
807 
808 static int
809 qed_dcbx_read_local_mib(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
810 {
811 	struct qed_dcbx_mib_meta_data data;
812 
813 	memset(&data, 0, sizeof(data));
814 	data.addr = p_hwfn->mcp_info->port_addr +
815 		    offsetof(struct public_port, local_admin_dcbx_mib);
816 	data.local_admin = &p_hwfn->p_dcbx_info->local_admin;
817 	data.size = sizeof(struct dcbx_local_params);
818 	qed_memcpy_from(p_hwfn, p_ptt, data.local_admin, data.addr, data.size);
819 
820 	return 0;
821 }
822 
823 static int qed_dcbx_read_mib(struct qed_hwfn *p_hwfn,
824 			     struct qed_ptt *p_ptt, enum qed_mib_read_type type)
825 {
826 	int rc = -EINVAL;
827 
828 	switch (type) {
829 	case QED_DCBX_OPERATIONAL_MIB:
830 		rc = qed_dcbx_read_operational_mib(p_hwfn, p_ptt, type);
831 		break;
832 	case QED_DCBX_REMOTE_MIB:
833 		rc = qed_dcbx_read_remote_mib(p_hwfn, p_ptt, type);
834 		break;
835 	case QED_DCBX_LOCAL_MIB:
836 		rc = qed_dcbx_read_local_mib(p_hwfn, p_ptt);
837 		break;
838 	case QED_DCBX_REMOTE_LLDP_MIB:
839 		rc = qed_dcbx_read_remote_lldp_mib(p_hwfn, p_ptt, type);
840 		break;
841 	case QED_DCBX_LOCAL_LLDP_MIB:
842 		rc = qed_dcbx_read_local_lldp_mib(p_hwfn, p_ptt);
843 		break;
844 	default:
845 		DP_ERR(p_hwfn, "MIB read err, unknown mib type %d\n", type);
846 	}
847 
848 	return rc;
849 }
850 
851 static void qed_dcbx_aen(struct qed_hwfn *hwfn, u32 mib_type)
852 {
853 	struct qed_common_cb_ops *op = hwfn->cdev->protocol_ops.common;
854 	void *cookie = hwfn->cdev->ops_cookie;
855 
856 	if (cookie && op->dcbx_aen)
857 		op->dcbx_aen(cookie, &hwfn->p_dcbx_info->get, mib_type);
858 }
859 
860 /* Read updated MIB.
861  * Reconfigure QM and invoke PF update ramrod command if operational MIB
862  * change is detected.
863  */
864 int
865 qed_dcbx_mib_update_event(struct qed_hwfn *p_hwfn,
866 			  struct qed_ptt *p_ptt, enum qed_mib_read_type type)
867 {
868 	int rc = 0;
869 
870 	rc = qed_dcbx_read_mib(p_hwfn, p_ptt, type);
871 	if (rc)
872 		return rc;
873 
874 	if (type == QED_DCBX_OPERATIONAL_MIB) {
875 		rc = qed_dcbx_process_mib_info(p_hwfn, p_ptt);
876 		if (!rc) {
877 			/* reconfigure tcs of QM queues according
878 			 * to negotiation results
879 			 */
880 			qed_qm_reconf(p_hwfn, p_ptt);
881 
882 			/* update storm FW with negotiation results */
883 			qed_sp_pf_update(p_hwfn);
884 
885 			/* for roce PFs, we may want to enable/disable DPM
886 			 * when DCBx change occurs
887 			 */
888 			if (p_hwfn->hw_info.personality ==
889 			    QED_PCI_ETH_ROCE)
890 				qed_roce_dpm_dcbx(p_hwfn, p_ptt);
891 		}
892 	}
893 
894 	qed_dcbx_get_params(p_hwfn, &p_hwfn->p_dcbx_info->get, type);
895 
896 	if (type == QED_DCBX_OPERATIONAL_MIB) {
897 		struct qed_dcbx_results *p_data;
898 		u16 val;
899 
900 		/* Configure in NIG which protocols support EDPM and should
901 		 * honor PFC.
902 		 */
903 		p_data = &p_hwfn->p_dcbx_info->results;
904 		val = (0x1 << p_data->arr[DCBX_PROTOCOL_ROCE].tc) |
905 		      (0x1 << p_data->arr[DCBX_PROTOCOL_ROCE_V2].tc);
906 		val <<= NIG_REG_TX_EDPM_CTRL_TX_EDPM_TC_EN_SHIFT;
907 		val |= NIG_REG_TX_EDPM_CTRL_TX_EDPM_EN;
908 		qed_wr(p_hwfn, p_ptt, NIG_REG_TX_EDPM_CTRL, val);
909 	}
910 
911 	qed_dcbx_aen(p_hwfn, type);
912 
913 	return rc;
914 }
915 
916 int qed_dcbx_info_alloc(struct qed_hwfn *p_hwfn)
917 {
918 	p_hwfn->p_dcbx_info = kzalloc(sizeof(*p_hwfn->p_dcbx_info), GFP_KERNEL);
919 	if (!p_hwfn->p_dcbx_info)
920 		return -ENOMEM;
921 
922 	return 0;
923 }
924 
925 void qed_dcbx_info_free(struct qed_hwfn *p_hwfn)
926 {
927 	kfree(p_hwfn->p_dcbx_info);
928 	p_hwfn->p_dcbx_info = NULL;
929 }
930 
931 static void qed_dcbx_update_protocol_data(struct protocol_dcb_data *p_data,
932 					  struct qed_dcbx_results *p_src,
933 					  enum dcbx_protocol_type type)
934 {
935 	p_data->dcb_enable_flag = p_src->arr[type].enable;
936 	p_data->dcb_priority = p_src->arr[type].priority;
937 	p_data->dcb_tc = p_src->arr[type].tc;
938 	p_data->dcb_dont_add_vlan0 = p_src->arr[type].dont_add_vlan0;
939 }
940 
941 /* Set pf update ramrod command params */
942 void qed_dcbx_set_pf_update_params(struct qed_dcbx_results *p_src,
943 				   struct pf_update_ramrod_data *p_dest)
944 {
945 	struct protocol_dcb_data *p_dcb_data;
946 	u8 update_flag;
947 
948 	update_flag = p_src->arr[DCBX_PROTOCOL_FCOE].update;
949 	p_dest->update_fcoe_dcb_data_mode = update_flag;
950 
951 	update_flag = p_src->arr[DCBX_PROTOCOL_ROCE].update;
952 	p_dest->update_roce_dcb_data_mode = update_flag;
953 
954 	update_flag = p_src->arr[DCBX_PROTOCOL_ROCE_V2].update;
955 	p_dest->update_rroce_dcb_data_mode = update_flag;
956 
957 	update_flag = p_src->arr[DCBX_PROTOCOL_ISCSI].update;
958 	p_dest->update_iscsi_dcb_data_mode = update_flag;
959 	update_flag = p_src->arr[DCBX_PROTOCOL_ETH].update;
960 	p_dest->update_eth_dcb_data_mode = update_flag;
961 
962 	p_dcb_data = &p_dest->fcoe_dcb_data;
963 	qed_dcbx_update_protocol_data(p_dcb_data, p_src, DCBX_PROTOCOL_FCOE);
964 	p_dcb_data = &p_dest->roce_dcb_data;
965 	qed_dcbx_update_protocol_data(p_dcb_data, p_src, DCBX_PROTOCOL_ROCE);
966 	p_dcb_data = &p_dest->rroce_dcb_data;
967 	qed_dcbx_update_protocol_data(p_dcb_data, p_src, DCBX_PROTOCOL_ROCE_V2);
968 	p_dcb_data = &p_dest->iscsi_dcb_data;
969 	qed_dcbx_update_protocol_data(p_dcb_data, p_src, DCBX_PROTOCOL_ISCSI);
970 	p_dcb_data = &p_dest->eth_dcb_data;
971 	qed_dcbx_update_protocol_data(p_dcb_data, p_src, DCBX_PROTOCOL_ETH);
972 }
973 
974 u8 qed_dcbx_get_priority_tc(struct qed_hwfn *p_hwfn, u8 pri)
975 {
976 	struct qed_dcbx_get *dcbx_info = &p_hwfn->p_dcbx_info->get;
977 
978 	if (pri >= QED_MAX_PFC_PRIORITIES) {
979 		DP_ERR(p_hwfn, "Invalid priority %d\n", pri);
980 		return QED_DCBX_DEFAULT_TC;
981 	}
982 
983 	if (!dcbx_info->operational.valid) {
984 		DP_VERBOSE(p_hwfn, QED_MSG_DCB,
985 			   "Dcbx parameters not available\n");
986 		return QED_DCBX_DEFAULT_TC;
987 	}
988 
989 	return dcbx_info->operational.params.ets_pri_tc_tbl[pri];
990 }
991 
992 #ifdef CONFIG_DCB
993 static int qed_dcbx_query_params(struct qed_hwfn *p_hwfn,
994 				 struct qed_dcbx_get *p_get,
995 				 enum qed_mib_read_type type)
996 {
997 	struct qed_ptt *p_ptt;
998 	int rc;
999 
1000 	if (IS_VF(p_hwfn->cdev))
1001 		return -EINVAL;
1002 
1003 	p_ptt = qed_ptt_acquire(p_hwfn);
1004 	if (!p_ptt)
1005 		return -EBUSY;
1006 
1007 	rc = qed_dcbx_read_mib(p_hwfn, p_ptt, type);
1008 	if (rc)
1009 		goto out;
1010 
1011 	rc = qed_dcbx_get_params(p_hwfn, p_get, type);
1012 
1013 out:
1014 	qed_ptt_release(p_hwfn, p_ptt);
1015 	return rc;
1016 }
1017 
1018 static void
1019 qed_dcbx_set_pfc_data(struct qed_hwfn *p_hwfn,
1020 		      u32 *pfc, struct qed_dcbx_params *p_params)
1021 {
1022 	u8 pfc_map = 0;
1023 	int i;
1024 
1025 	*pfc &= ~DCBX_PFC_ERROR_MASK;
1026 
1027 	if (p_params->pfc.willing)
1028 		*pfc |= DCBX_PFC_WILLING_MASK;
1029 	else
1030 		*pfc &= ~DCBX_PFC_WILLING_MASK;
1031 
1032 	if (p_params->pfc.enabled)
1033 		*pfc |= DCBX_PFC_ENABLED_MASK;
1034 	else
1035 		*pfc &= ~DCBX_PFC_ENABLED_MASK;
1036 
1037 	*pfc &= ~DCBX_PFC_CAPS_MASK;
1038 	*pfc |= (u32)p_params->pfc.max_tc << DCBX_PFC_CAPS_SHIFT;
1039 
1040 	for (i = 0; i < QED_MAX_PFC_PRIORITIES; i++)
1041 		if (p_params->pfc.prio[i])
1042 			pfc_map |= BIT(i);
1043 
1044 	*pfc &= ~DCBX_PFC_PRI_EN_BITMAP_MASK;
1045 	*pfc |= (pfc_map << DCBX_PFC_PRI_EN_BITMAP_SHIFT);
1046 
1047 	DP_VERBOSE(p_hwfn, QED_MSG_DCB, "pfc = 0x%x\n", *pfc);
1048 }
1049 
1050 static void
1051 qed_dcbx_set_ets_data(struct qed_hwfn *p_hwfn,
1052 		      struct dcbx_ets_feature *p_ets,
1053 		      struct qed_dcbx_params *p_params)
1054 {
1055 	__be32 bw_map[2], tsa_map[2];
1056 	u32 val;
1057 	int i;
1058 
1059 	if (p_params->ets_willing)
1060 		p_ets->flags |= DCBX_ETS_WILLING_MASK;
1061 	else
1062 		p_ets->flags &= ~DCBX_ETS_WILLING_MASK;
1063 
1064 	if (p_params->ets_cbs)
1065 		p_ets->flags |= DCBX_ETS_CBS_MASK;
1066 	else
1067 		p_ets->flags &= ~DCBX_ETS_CBS_MASK;
1068 
1069 	if (p_params->ets_enabled)
1070 		p_ets->flags |= DCBX_ETS_ENABLED_MASK;
1071 	else
1072 		p_ets->flags &= ~DCBX_ETS_ENABLED_MASK;
1073 
1074 	p_ets->flags &= ~DCBX_ETS_MAX_TCS_MASK;
1075 	p_ets->flags |= (u32)p_params->max_ets_tc << DCBX_ETS_MAX_TCS_SHIFT;
1076 
1077 	p_ets->pri_tc_tbl[0] = 0;
1078 
1079 	for (i = 0; i < QED_MAX_PFC_PRIORITIES; i++) {
1080 		((u8 *)bw_map)[i] = p_params->ets_tc_bw_tbl[i];
1081 		((u8 *)tsa_map)[i] = p_params->ets_tc_tsa_tbl[i];
1082 
1083 		/* Copy the priority value to the corresponding 4 bits in the
1084 		 * traffic class table.
1085 		 */
1086 		val = (((u32)p_params->ets_pri_tc_tbl[i]) << ((7 - i) * 4));
1087 		p_ets->pri_tc_tbl[0] |= val;
1088 	}
1089 
1090 	be32_to_cpu_array(p_ets->tc_bw_tbl, bw_map, 2);
1091 	be32_to_cpu_array(p_ets->tc_tsa_tbl, tsa_map, 2);
1092 }
1093 
1094 static void
1095 qed_dcbx_set_app_data(struct qed_hwfn *p_hwfn,
1096 		      struct dcbx_app_priority_feature *p_app,
1097 		      struct qed_dcbx_params *p_params, bool ieee)
1098 {
1099 	u32 *entry;
1100 	int i;
1101 
1102 	if (p_params->app_willing)
1103 		p_app->flags |= DCBX_APP_WILLING_MASK;
1104 	else
1105 		p_app->flags &= ~DCBX_APP_WILLING_MASK;
1106 
1107 	if (p_params->app_valid)
1108 		p_app->flags |= DCBX_APP_ENABLED_MASK;
1109 	else
1110 		p_app->flags &= ~DCBX_APP_ENABLED_MASK;
1111 
1112 	p_app->flags &= ~DCBX_APP_NUM_ENTRIES_MASK;
1113 	p_app->flags |= (u32)p_params->num_app_entries <<
1114 	    DCBX_APP_NUM_ENTRIES_SHIFT;
1115 
1116 	for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
1117 		entry = &p_app->app_pri_tbl[i].entry;
1118 		*entry = 0;
1119 		if (ieee) {
1120 			*entry &= ~(DCBX_APP_SF_IEEE_MASK | DCBX_APP_SF_MASK);
1121 			switch (p_params->app_entry[i].sf_ieee) {
1122 			case QED_DCBX_SF_IEEE_ETHTYPE:
1123 				*entry |= ((u32)DCBX_APP_SF_IEEE_ETHTYPE <<
1124 					   DCBX_APP_SF_IEEE_SHIFT);
1125 				*entry |= ((u32)DCBX_APP_SF_ETHTYPE <<
1126 					   DCBX_APP_SF_SHIFT);
1127 				break;
1128 			case QED_DCBX_SF_IEEE_TCP_PORT:
1129 				*entry |= ((u32)DCBX_APP_SF_IEEE_TCP_PORT <<
1130 					   DCBX_APP_SF_IEEE_SHIFT);
1131 				*entry |= ((u32)DCBX_APP_SF_PORT <<
1132 					   DCBX_APP_SF_SHIFT);
1133 				break;
1134 			case QED_DCBX_SF_IEEE_UDP_PORT:
1135 				*entry |= ((u32)DCBX_APP_SF_IEEE_UDP_PORT <<
1136 					   DCBX_APP_SF_IEEE_SHIFT);
1137 				*entry |= ((u32)DCBX_APP_SF_PORT <<
1138 					   DCBX_APP_SF_SHIFT);
1139 				break;
1140 			case QED_DCBX_SF_IEEE_TCP_UDP_PORT:
1141 				*entry |= ((u32)DCBX_APP_SF_IEEE_TCP_UDP_PORT <<
1142 					   DCBX_APP_SF_IEEE_SHIFT);
1143 				*entry |= ((u32)DCBX_APP_SF_PORT <<
1144 					   DCBX_APP_SF_SHIFT);
1145 				break;
1146 			}
1147 		} else {
1148 			*entry &= ~DCBX_APP_SF_MASK;
1149 			if (p_params->app_entry[i].ethtype)
1150 				*entry |= ((u32)DCBX_APP_SF_ETHTYPE <<
1151 					   DCBX_APP_SF_SHIFT);
1152 			else
1153 				*entry |= ((u32)DCBX_APP_SF_PORT <<
1154 					   DCBX_APP_SF_SHIFT);
1155 		}
1156 
1157 		*entry &= ~DCBX_APP_PROTOCOL_ID_MASK;
1158 		*entry |= ((u32)p_params->app_entry[i].proto_id <<
1159 			   DCBX_APP_PROTOCOL_ID_SHIFT);
1160 		*entry &= ~DCBX_APP_PRI_MAP_MASK;
1161 		*entry |= ((u32)(p_params->app_entry[i].prio) <<
1162 			   DCBX_APP_PRI_MAP_SHIFT);
1163 	}
1164 }
1165 
1166 static void
1167 qed_dcbx_set_local_params(struct qed_hwfn *p_hwfn,
1168 			  struct dcbx_local_params *local_admin,
1169 			  struct qed_dcbx_set *params)
1170 {
1171 	bool ieee = false;
1172 
1173 	local_admin->flags = 0;
1174 	memcpy(&local_admin->features,
1175 	       &p_hwfn->p_dcbx_info->operational.features,
1176 	       sizeof(local_admin->features));
1177 
1178 	if (params->enabled) {
1179 		local_admin->config = params->ver_num;
1180 		ieee = !!(params->ver_num & DCBX_CONFIG_VERSION_IEEE);
1181 	} else {
1182 		local_admin->config = DCBX_CONFIG_VERSION_DISABLED;
1183 	}
1184 
1185 	DP_VERBOSE(p_hwfn, QED_MSG_DCB, "Dcbx version = %d\n",
1186 		   local_admin->config);
1187 
1188 	if (params->override_flags & QED_DCBX_OVERRIDE_PFC_CFG)
1189 		qed_dcbx_set_pfc_data(p_hwfn, &local_admin->features.pfc,
1190 				      &params->config.params);
1191 
1192 	if (params->override_flags & QED_DCBX_OVERRIDE_ETS_CFG)
1193 		qed_dcbx_set_ets_data(p_hwfn, &local_admin->features.ets,
1194 				      &params->config.params);
1195 
1196 	if (params->override_flags & QED_DCBX_OVERRIDE_APP_CFG)
1197 		qed_dcbx_set_app_data(p_hwfn, &local_admin->features.app,
1198 				      &params->config.params, ieee);
1199 }
1200 
1201 int qed_dcbx_config_params(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
1202 			   struct qed_dcbx_set *params, bool hw_commit)
1203 {
1204 	struct dcbx_local_params local_admin;
1205 	struct qed_dcbx_mib_meta_data data;
1206 	u32 resp = 0, param = 0;
1207 	int rc = 0;
1208 
1209 	if (!hw_commit) {
1210 		memcpy(&p_hwfn->p_dcbx_info->set, params,
1211 		       sizeof(struct qed_dcbx_set));
1212 		return 0;
1213 	}
1214 
1215 	/* clear set-parmas cache */
1216 	memset(&p_hwfn->p_dcbx_info->set, 0, sizeof(p_hwfn->p_dcbx_info->set));
1217 
1218 	memset(&local_admin, 0, sizeof(local_admin));
1219 	qed_dcbx_set_local_params(p_hwfn, &local_admin, params);
1220 
1221 	data.addr = p_hwfn->mcp_info->port_addr +
1222 	    offsetof(struct public_port, local_admin_dcbx_mib);
1223 	data.local_admin = &local_admin;
1224 	data.size = sizeof(struct dcbx_local_params);
1225 	qed_memcpy_to(p_hwfn, p_ptt, data.addr, data.local_admin, data.size);
1226 
1227 	rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_SET_DCBX,
1228 			 1 << DRV_MB_PARAM_LLDP_SEND_SHIFT, &resp, &param);
1229 	if (rc)
1230 		DP_NOTICE(p_hwfn, "Failed to send DCBX update request\n");
1231 
1232 	return rc;
1233 }
1234 
1235 int qed_dcbx_get_config_params(struct qed_hwfn *p_hwfn,
1236 			       struct qed_dcbx_set *params)
1237 {
1238 	struct qed_dcbx_get *dcbx_info;
1239 	int rc;
1240 
1241 	if (p_hwfn->p_dcbx_info->set.config.valid) {
1242 		memcpy(params, &p_hwfn->p_dcbx_info->set,
1243 		       sizeof(struct qed_dcbx_set));
1244 		return 0;
1245 	}
1246 
1247 	dcbx_info = kzalloc(sizeof(*dcbx_info), GFP_KERNEL);
1248 	if (!dcbx_info)
1249 		return -ENOMEM;
1250 
1251 	rc = qed_dcbx_query_params(p_hwfn, dcbx_info, QED_DCBX_OPERATIONAL_MIB);
1252 	if (rc) {
1253 		kfree(dcbx_info);
1254 		return rc;
1255 	}
1256 
1257 	p_hwfn->p_dcbx_info->set.override_flags = 0;
1258 	p_hwfn->p_dcbx_info->set.ver_num = DCBX_CONFIG_VERSION_DISABLED;
1259 	if (dcbx_info->operational.cee)
1260 		p_hwfn->p_dcbx_info->set.ver_num |= DCBX_CONFIG_VERSION_CEE;
1261 	if (dcbx_info->operational.ieee)
1262 		p_hwfn->p_dcbx_info->set.ver_num |= DCBX_CONFIG_VERSION_IEEE;
1263 	if (dcbx_info->operational.local)
1264 		p_hwfn->p_dcbx_info->set.ver_num |= DCBX_CONFIG_VERSION_STATIC;
1265 
1266 	p_hwfn->p_dcbx_info->set.enabled = dcbx_info->operational.enabled;
1267 	BUILD_BUG_ON(sizeof(dcbx_info->operational.params) !=
1268 		     sizeof(p_hwfn->p_dcbx_info->set.config.params));
1269 	memcpy(&p_hwfn->p_dcbx_info->set.config.params,
1270 	       &dcbx_info->operational.params,
1271 	       sizeof(p_hwfn->p_dcbx_info->set.config.params));
1272 	p_hwfn->p_dcbx_info->set.config.valid = true;
1273 
1274 	memcpy(params, &p_hwfn->p_dcbx_info->set, sizeof(struct qed_dcbx_set));
1275 
1276 	kfree(dcbx_info);
1277 
1278 	return 0;
1279 }
1280 
1281 static struct qed_dcbx_get *qed_dcbnl_get_dcbx(struct qed_hwfn *hwfn,
1282 					       enum qed_mib_read_type type)
1283 {
1284 	struct qed_dcbx_get *dcbx_info;
1285 
1286 	dcbx_info = kzalloc(sizeof(*dcbx_info), GFP_ATOMIC);
1287 	if (!dcbx_info)
1288 		return NULL;
1289 
1290 	if (qed_dcbx_query_params(hwfn, dcbx_info, type)) {
1291 		kfree(dcbx_info);
1292 		return NULL;
1293 	}
1294 
1295 	if ((type == QED_DCBX_OPERATIONAL_MIB) &&
1296 	    !dcbx_info->operational.enabled) {
1297 		DP_INFO(hwfn, "DCBX is not enabled/operational\n");
1298 		kfree(dcbx_info);
1299 		return NULL;
1300 	}
1301 
1302 	return dcbx_info;
1303 }
1304 
1305 static u8 qed_dcbnl_getstate(struct qed_dev *cdev)
1306 {
1307 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1308 	struct qed_dcbx_get *dcbx_info;
1309 	bool enabled;
1310 
1311 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
1312 	if (!dcbx_info)
1313 		return 0;
1314 
1315 	enabled = dcbx_info->operational.enabled;
1316 	DP_VERBOSE(hwfn, QED_MSG_DCB, "DCB state = %d\n", enabled);
1317 	kfree(dcbx_info);
1318 
1319 	return enabled;
1320 }
1321 
1322 static u8 qed_dcbnl_setstate(struct qed_dev *cdev, u8 state)
1323 {
1324 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1325 	struct qed_dcbx_set dcbx_set;
1326 	struct qed_ptt *ptt;
1327 	int rc;
1328 
1329 	DP_VERBOSE(hwfn, QED_MSG_DCB, "DCB state = %d\n", state);
1330 
1331 	memset(&dcbx_set, 0, sizeof(dcbx_set));
1332 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
1333 	if (rc)
1334 		return 1;
1335 
1336 	dcbx_set.enabled = !!state;
1337 
1338 	ptt = qed_ptt_acquire(hwfn);
1339 	if (!ptt)
1340 		return 1;
1341 
1342 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
1343 
1344 	qed_ptt_release(hwfn, ptt);
1345 
1346 	return rc ? 1 : 0;
1347 }
1348 
1349 static void qed_dcbnl_getpgtccfgtx(struct qed_dev *cdev, int tc, u8 *prio_type,
1350 				   u8 *pgid, u8 *bw_pct, u8 *up_map)
1351 {
1352 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1353 	struct qed_dcbx_get *dcbx_info;
1354 
1355 	DP_VERBOSE(hwfn, QED_MSG_DCB, "tc = %d\n", tc);
1356 	*prio_type = *pgid = *bw_pct = *up_map = 0;
1357 	if (tc < 0 || tc >= QED_MAX_PFC_PRIORITIES) {
1358 		DP_INFO(hwfn, "Invalid tc %d\n", tc);
1359 		return;
1360 	}
1361 
1362 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
1363 	if (!dcbx_info)
1364 		return;
1365 
1366 	*pgid = dcbx_info->operational.params.ets_pri_tc_tbl[tc];
1367 	kfree(dcbx_info);
1368 }
1369 
1370 static void qed_dcbnl_getpgbwgcfgtx(struct qed_dev *cdev, int pgid, u8 *bw_pct)
1371 {
1372 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1373 	struct qed_dcbx_get *dcbx_info;
1374 
1375 	*bw_pct = 0;
1376 	DP_VERBOSE(hwfn, QED_MSG_DCB, "pgid = %d\n", pgid);
1377 	if (pgid < 0 || pgid >= QED_MAX_PFC_PRIORITIES) {
1378 		DP_INFO(hwfn, "Invalid pgid %d\n", pgid);
1379 		return;
1380 	}
1381 
1382 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
1383 	if (!dcbx_info)
1384 		return;
1385 
1386 	*bw_pct = dcbx_info->operational.params.ets_tc_bw_tbl[pgid];
1387 	DP_VERBOSE(hwfn, QED_MSG_DCB, "bw_pct = %d\n", *bw_pct);
1388 	kfree(dcbx_info);
1389 }
1390 
1391 static void qed_dcbnl_getpgtccfgrx(struct qed_dev *cdev, int tc, u8 *prio,
1392 				   u8 *bwg_id, u8 *bw_pct, u8 *up_map)
1393 {
1394 	DP_INFO(QED_LEADING_HWFN(cdev), "Rx ETS is not supported\n");
1395 	*prio = *bwg_id = *bw_pct = *up_map = 0;
1396 }
1397 
1398 static void qed_dcbnl_getpgbwgcfgrx(struct qed_dev *cdev,
1399 				    int bwg_id, u8 *bw_pct)
1400 {
1401 	DP_INFO(QED_LEADING_HWFN(cdev), "Rx ETS is not supported\n");
1402 	*bw_pct = 0;
1403 }
1404 
1405 static void qed_dcbnl_getpfccfg(struct qed_dev *cdev,
1406 				int priority, u8 *setting)
1407 {
1408 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1409 	struct qed_dcbx_get *dcbx_info;
1410 
1411 	DP_VERBOSE(hwfn, QED_MSG_DCB, "priority = %d\n", priority);
1412 	if (priority < 0 || priority >= QED_MAX_PFC_PRIORITIES) {
1413 		DP_INFO(hwfn, "Invalid priority %d\n", priority);
1414 		return;
1415 	}
1416 
1417 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
1418 	if (!dcbx_info)
1419 		return;
1420 
1421 	*setting = dcbx_info->operational.params.pfc.prio[priority];
1422 	DP_VERBOSE(hwfn, QED_MSG_DCB, "setting = %d\n", *setting);
1423 	kfree(dcbx_info);
1424 }
1425 
1426 static void qed_dcbnl_setpfccfg(struct qed_dev *cdev, int priority, u8 setting)
1427 {
1428 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1429 	struct qed_dcbx_set dcbx_set;
1430 	struct qed_ptt *ptt;
1431 	int rc;
1432 
1433 	DP_VERBOSE(hwfn, QED_MSG_DCB, "priority = %d setting = %d\n",
1434 		   priority, setting);
1435 	if (priority < 0 || priority >= QED_MAX_PFC_PRIORITIES) {
1436 		DP_INFO(hwfn, "Invalid priority %d\n", priority);
1437 		return;
1438 	}
1439 
1440 	memset(&dcbx_set, 0, sizeof(dcbx_set));
1441 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
1442 	if (rc)
1443 		return;
1444 
1445 	dcbx_set.override_flags |= QED_DCBX_OVERRIDE_PFC_CFG;
1446 	dcbx_set.config.params.pfc.prio[priority] = !!setting;
1447 
1448 	ptt = qed_ptt_acquire(hwfn);
1449 	if (!ptt)
1450 		return;
1451 
1452 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
1453 
1454 	qed_ptt_release(hwfn, ptt);
1455 }
1456 
1457 static u8 qed_dcbnl_getcap(struct qed_dev *cdev, int capid, u8 *cap)
1458 {
1459 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1460 	struct qed_dcbx_get *dcbx_info;
1461 	int rc = 0;
1462 
1463 	DP_VERBOSE(hwfn, QED_MSG_DCB, "capid = %d\n", capid);
1464 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
1465 	if (!dcbx_info)
1466 		return 1;
1467 
1468 	switch (capid) {
1469 	case DCB_CAP_ATTR_PG:
1470 	case DCB_CAP_ATTR_PFC:
1471 	case DCB_CAP_ATTR_UP2TC:
1472 	case DCB_CAP_ATTR_GSP:
1473 		*cap = true;
1474 		break;
1475 	case DCB_CAP_ATTR_PG_TCS:
1476 	case DCB_CAP_ATTR_PFC_TCS:
1477 		*cap = 0x80;
1478 		break;
1479 	case DCB_CAP_ATTR_DCBX:
1480 		*cap = (DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_VER_IEEE |
1481 			DCB_CAP_DCBX_STATIC);
1482 		break;
1483 	default:
1484 		*cap = false;
1485 		rc = 1;
1486 	}
1487 
1488 	DP_VERBOSE(hwfn, QED_MSG_DCB, "id = %d caps = %d\n", capid, *cap);
1489 	kfree(dcbx_info);
1490 
1491 	return rc;
1492 }
1493 
1494 static int qed_dcbnl_getnumtcs(struct qed_dev *cdev, int tcid, u8 *num)
1495 {
1496 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1497 	struct qed_dcbx_get *dcbx_info;
1498 	int rc = 0;
1499 
1500 	DP_VERBOSE(hwfn, QED_MSG_DCB, "tcid = %d\n", tcid);
1501 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
1502 	if (!dcbx_info)
1503 		return -EINVAL;
1504 
1505 	switch (tcid) {
1506 	case DCB_NUMTCS_ATTR_PG:
1507 		*num = dcbx_info->operational.params.max_ets_tc;
1508 		break;
1509 	case DCB_NUMTCS_ATTR_PFC:
1510 		*num = dcbx_info->operational.params.pfc.max_tc;
1511 		break;
1512 	default:
1513 		rc = -EINVAL;
1514 	}
1515 
1516 	kfree(dcbx_info);
1517 	DP_VERBOSE(hwfn, QED_MSG_DCB, "numtcs = %d\n", *num);
1518 
1519 	return rc;
1520 }
1521 
1522 static u8 qed_dcbnl_getpfcstate(struct qed_dev *cdev)
1523 {
1524 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1525 	struct qed_dcbx_get *dcbx_info;
1526 	bool enabled;
1527 
1528 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
1529 	if (!dcbx_info)
1530 		return 0;
1531 
1532 	enabled = dcbx_info->operational.params.pfc.enabled;
1533 	DP_VERBOSE(hwfn, QED_MSG_DCB, "pfc state = %d\n", enabled);
1534 	kfree(dcbx_info);
1535 
1536 	return enabled;
1537 }
1538 
1539 static u8 qed_dcbnl_getdcbx(struct qed_dev *cdev)
1540 {
1541 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1542 	struct qed_dcbx_get *dcbx_info;
1543 	u8 mode = 0;
1544 
1545 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
1546 	if (!dcbx_info)
1547 		return 0;
1548 
1549 	if (dcbx_info->operational.ieee)
1550 		mode |= DCB_CAP_DCBX_VER_IEEE;
1551 	if (dcbx_info->operational.cee)
1552 		mode |= DCB_CAP_DCBX_VER_CEE;
1553 	if (dcbx_info->operational.local)
1554 		mode |= DCB_CAP_DCBX_STATIC;
1555 
1556 	DP_VERBOSE(hwfn, QED_MSG_DCB, "dcb mode = %d\n", mode);
1557 	kfree(dcbx_info);
1558 
1559 	return mode;
1560 }
1561 
1562 static void qed_dcbnl_setpgtccfgtx(struct qed_dev *cdev,
1563 				   int tc,
1564 				   u8 pri_type, u8 pgid, u8 bw_pct, u8 up_map)
1565 {
1566 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1567 	struct qed_dcbx_set dcbx_set;
1568 	struct qed_ptt *ptt;
1569 	int rc;
1570 
1571 	DP_VERBOSE(hwfn, QED_MSG_DCB,
1572 		   "tc = %d pri_type = %d pgid = %d bw_pct = %d up_map = %d\n",
1573 		   tc, pri_type, pgid, bw_pct, up_map);
1574 
1575 	if (tc < 0 || tc >= QED_MAX_PFC_PRIORITIES) {
1576 		DP_INFO(hwfn, "Invalid tc %d\n", tc);
1577 		return;
1578 	}
1579 
1580 	memset(&dcbx_set, 0, sizeof(dcbx_set));
1581 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
1582 	if (rc)
1583 		return;
1584 
1585 	dcbx_set.override_flags |= QED_DCBX_OVERRIDE_ETS_CFG;
1586 	dcbx_set.config.params.ets_pri_tc_tbl[tc] = pgid;
1587 
1588 	ptt = qed_ptt_acquire(hwfn);
1589 	if (!ptt)
1590 		return;
1591 
1592 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
1593 
1594 	qed_ptt_release(hwfn, ptt);
1595 }
1596 
1597 static void qed_dcbnl_setpgtccfgrx(struct qed_dev *cdev, int prio,
1598 				   u8 pri_type, u8 pgid, u8 bw_pct, u8 up_map)
1599 {
1600 	DP_INFO(QED_LEADING_HWFN(cdev), "Rx ETS is not supported\n");
1601 }
1602 
1603 static void qed_dcbnl_setpgbwgcfgtx(struct qed_dev *cdev, int pgid, u8 bw_pct)
1604 {
1605 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1606 	struct qed_dcbx_set dcbx_set;
1607 	struct qed_ptt *ptt;
1608 	int rc;
1609 
1610 	DP_VERBOSE(hwfn, QED_MSG_DCB, "pgid = %d bw_pct = %d\n", pgid, bw_pct);
1611 	if (pgid < 0 || pgid >= QED_MAX_PFC_PRIORITIES) {
1612 		DP_INFO(hwfn, "Invalid pgid %d\n", pgid);
1613 		return;
1614 	}
1615 
1616 	memset(&dcbx_set, 0, sizeof(dcbx_set));
1617 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
1618 	if (rc)
1619 		return;
1620 
1621 	dcbx_set.override_flags |= QED_DCBX_OVERRIDE_ETS_CFG;
1622 	dcbx_set.config.params.ets_tc_bw_tbl[pgid] = bw_pct;
1623 
1624 	ptt = qed_ptt_acquire(hwfn);
1625 	if (!ptt)
1626 		return;
1627 
1628 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
1629 
1630 	qed_ptt_release(hwfn, ptt);
1631 }
1632 
1633 static void qed_dcbnl_setpgbwgcfgrx(struct qed_dev *cdev, int pgid, u8 bw_pct)
1634 {
1635 	DP_INFO(QED_LEADING_HWFN(cdev), "Rx ETS is not supported\n");
1636 }
1637 
1638 static u8 qed_dcbnl_setall(struct qed_dev *cdev)
1639 {
1640 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1641 	struct qed_dcbx_set dcbx_set;
1642 	struct qed_ptt *ptt;
1643 	int rc;
1644 
1645 	memset(&dcbx_set, 0, sizeof(dcbx_set));
1646 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
1647 	if (rc)
1648 		return 1;
1649 
1650 	ptt = qed_ptt_acquire(hwfn);
1651 	if (!ptt)
1652 		return 1;
1653 
1654 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 1);
1655 
1656 	qed_ptt_release(hwfn, ptt);
1657 
1658 	return rc;
1659 }
1660 
1661 static int qed_dcbnl_setnumtcs(struct qed_dev *cdev, int tcid, u8 num)
1662 {
1663 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1664 	struct qed_dcbx_set dcbx_set;
1665 	struct qed_ptt *ptt;
1666 	int rc;
1667 
1668 	DP_VERBOSE(hwfn, QED_MSG_DCB, "tcid = %d num = %d\n", tcid, num);
1669 	memset(&dcbx_set, 0, sizeof(dcbx_set));
1670 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
1671 	if (rc)
1672 		return 1;
1673 
1674 	switch (tcid) {
1675 	case DCB_NUMTCS_ATTR_PG:
1676 		dcbx_set.override_flags |= QED_DCBX_OVERRIDE_ETS_CFG;
1677 		dcbx_set.config.params.max_ets_tc = num;
1678 		break;
1679 	case DCB_NUMTCS_ATTR_PFC:
1680 		dcbx_set.override_flags |= QED_DCBX_OVERRIDE_PFC_CFG;
1681 		dcbx_set.config.params.pfc.max_tc = num;
1682 		break;
1683 	default:
1684 		DP_INFO(hwfn, "Invalid tcid %d\n", tcid);
1685 		return -EINVAL;
1686 	}
1687 
1688 	ptt = qed_ptt_acquire(hwfn);
1689 	if (!ptt)
1690 		return -EINVAL;
1691 
1692 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
1693 
1694 	qed_ptt_release(hwfn, ptt);
1695 
1696 	return 0;
1697 }
1698 
1699 static void qed_dcbnl_setpfcstate(struct qed_dev *cdev, u8 state)
1700 {
1701 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1702 	struct qed_dcbx_set dcbx_set;
1703 	struct qed_ptt *ptt;
1704 	int rc;
1705 
1706 	DP_VERBOSE(hwfn, QED_MSG_DCB, "new state = %d\n", state);
1707 
1708 	memset(&dcbx_set, 0, sizeof(dcbx_set));
1709 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
1710 	if (rc)
1711 		return;
1712 
1713 	dcbx_set.override_flags |= QED_DCBX_OVERRIDE_PFC_CFG;
1714 	dcbx_set.config.params.pfc.enabled = !!state;
1715 
1716 	ptt = qed_ptt_acquire(hwfn);
1717 	if (!ptt)
1718 		return;
1719 
1720 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
1721 
1722 	qed_ptt_release(hwfn, ptt);
1723 }
1724 
1725 static int qed_dcbnl_getapp(struct qed_dev *cdev, u8 idtype, u16 idval)
1726 {
1727 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1728 	struct qed_dcbx_get *dcbx_info;
1729 	struct qed_app_entry *entry;
1730 	bool ethtype;
1731 	u8 prio = 0;
1732 	int i;
1733 
1734 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
1735 	if (!dcbx_info)
1736 		return -EINVAL;
1737 
1738 	ethtype = !!(idtype == DCB_APP_IDTYPE_ETHTYPE);
1739 	for (i = 0; i < QED_DCBX_MAX_APP_PROTOCOL; i++) {
1740 		entry = &dcbx_info->operational.params.app_entry[i];
1741 		if ((entry->ethtype == ethtype) && (entry->proto_id == idval)) {
1742 			prio = entry->prio;
1743 			break;
1744 		}
1745 	}
1746 
1747 	if (i == QED_DCBX_MAX_APP_PROTOCOL) {
1748 		DP_ERR(cdev, "App entry (%d, %d) not found\n", idtype, idval);
1749 		kfree(dcbx_info);
1750 		return -EINVAL;
1751 	}
1752 
1753 	kfree(dcbx_info);
1754 
1755 	return prio;
1756 }
1757 
1758 static int qed_dcbnl_setapp(struct qed_dev *cdev,
1759 			    u8 idtype, u16 idval, u8 pri_map)
1760 {
1761 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1762 	struct qed_dcbx_set dcbx_set;
1763 	struct qed_app_entry *entry;
1764 	struct qed_ptt *ptt;
1765 	bool ethtype;
1766 	int rc, i;
1767 
1768 	memset(&dcbx_set, 0, sizeof(dcbx_set));
1769 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
1770 	if (rc)
1771 		return -EINVAL;
1772 
1773 	ethtype = !!(idtype == DCB_APP_IDTYPE_ETHTYPE);
1774 	for (i = 0; i < QED_DCBX_MAX_APP_PROTOCOL; i++) {
1775 		entry = &dcbx_set.config.params.app_entry[i];
1776 		if ((entry->ethtype == ethtype) && (entry->proto_id == idval))
1777 			break;
1778 		/* First empty slot */
1779 		if (!entry->proto_id) {
1780 			dcbx_set.config.params.num_app_entries++;
1781 			break;
1782 		}
1783 	}
1784 
1785 	if (i == QED_DCBX_MAX_APP_PROTOCOL) {
1786 		DP_ERR(cdev, "App table is full\n");
1787 		return -EBUSY;
1788 	}
1789 
1790 	dcbx_set.override_flags |= QED_DCBX_OVERRIDE_APP_CFG;
1791 	dcbx_set.config.params.app_entry[i].ethtype = ethtype;
1792 	dcbx_set.config.params.app_entry[i].proto_id = idval;
1793 	dcbx_set.config.params.app_entry[i].prio = pri_map;
1794 
1795 	ptt = qed_ptt_acquire(hwfn);
1796 	if (!ptt)
1797 		return -EBUSY;
1798 
1799 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
1800 
1801 	qed_ptt_release(hwfn, ptt);
1802 
1803 	return rc;
1804 }
1805 
1806 static u8 qed_dcbnl_setdcbx(struct qed_dev *cdev, u8 mode)
1807 {
1808 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1809 	struct qed_dcbx_set dcbx_set;
1810 	struct qed_ptt *ptt;
1811 	int rc;
1812 
1813 	DP_VERBOSE(hwfn, QED_MSG_DCB, "new mode = %x\n", mode);
1814 
1815 	if (!(mode & DCB_CAP_DCBX_VER_IEEE) &&
1816 	    !(mode & DCB_CAP_DCBX_VER_CEE) && !(mode & DCB_CAP_DCBX_STATIC)) {
1817 		DP_INFO(hwfn, "Allowed modes are cee, ieee or static\n");
1818 		return 1;
1819 	}
1820 
1821 	memset(&dcbx_set, 0, sizeof(dcbx_set));
1822 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
1823 	if (rc)
1824 		return 1;
1825 
1826 	dcbx_set.ver_num = 0;
1827 	if (mode & DCB_CAP_DCBX_VER_CEE) {
1828 		dcbx_set.ver_num |= DCBX_CONFIG_VERSION_CEE;
1829 		dcbx_set.enabled = true;
1830 	}
1831 
1832 	if (mode & DCB_CAP_DCBX_VER_IEEE) {
1833 		dcbx_set.ver_num |= DCBX_CONFIG_VERSION_IEEE;
1834 		dcbx_set.enabled = true;
1835 	}
1836 
1837 	if (mode & DCB_CAP_DCBX_STATIC) {
1838 		dcbx_set.ver_num |= DCBX_CONFIG_VERSION_STATIC;
1839 		dcbx_set.enabled = true;
1840 	}
1841 
1842 	ptt = qed_ptt_acquire(hwfn);
1843 	if (!ptt)
1844 		return 1;
1845 
1846 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
1847 
1848 	qed_ptt_release(hwfn, ptt);
1849 
1850 	return rc;
1851 }
1852 
1853 static u8 qed_dcbnl_getfeatcfg(struct qed_dev *cdev, int featid, u8 *flags)
1854 {
1855 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1856 	struct qed_dcbx_get *dcbx_info;
1857 
1858 	DP_VERBOSE(hwfn, QED_MSG_DCB, "Feature id  = %d\n", featid);
1859 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
1860 	if (!dcbx_info)
1861 		return 1;
1862 
1863 	*flags = 0;
1864 	switch (featid) {
1865 	case DCB_FEATCFG_ATTR_PG:
1866 		if (dcbx_info->operational.params.ets_enabled)
1867 			*flags = DCB_FEATCFG_ENABLE;
1868 		else
1869 			*flags = DCB_FEATCFG_ERROR;
1870 		break;
1871 	case DCB_FEATCFG_ATTR_PFC:
1872 		if (dcbx_info->operational.params.pfc.enabled)
1873 			*flags = DCB_FEATCFG_ENABLE;
1874 		else
1875 			*flags = DCB_FEATCFG_ERROR;
1876 		break;
1877 	case DCB_FEATCFG_ATTR_APP:
1878 		if (dcbx_info->operational.params.app_valid)
1879 			*flags = DCB_FEATCFG_ENABLE;
1880 		else
1881 			*flags = DCB_FEATCFG_ERROR;
1882 		break;
1883 	default:
1884 		DP_INFO(hwfn, "Invalid feature-ID %d\n", featid);
1885 		kfree(dcbx_info);
1886 		return 1;
1887 	}
1888 
1889 	DP_VERBOSE(hwfn, QED_MSG_DCB, "flags = %d\n", *flags);
1890 	kfree(dcbx_info);
1891 
1892 	return 0;
1893 }
1894 
1895 static u8 qed_dcbnl_setfeatcfg(struct qed_dev *cdev, int featid, u8 flags)
1896 {
1897 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1898 	struct qed_dcbx_set dcbx_set;
1899 	bool enabled, willing;
1900 	struct qed_ptt *ptt;
1901 	int rc;
1902 
1903 	DP_VERBOSE(hwfn, QED_MSG_DCB, "featid = %d flags = %d\n",
1904 		   featid, flags);
1905 	memset(&dcbx_set, 0, sizeof(dcbx_set));
1906 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
1907 	if (rc)
1908 		return 1;
1909 
1910 	enabled = !!(flags & DCB_FEATCFG_ENABLE);
1911 	willing = !!(flags & DCB_FEATCFG_WILLING);
1912 	switch (featid) {
1913 	case DCB_FEATCFG_ATTR_PG:
1914 		dcbx_set.override_flags |= QED_DCBX_OVERRIDE_ETS_CFG;
1915 		dcbx_set.config.params.ets_enabled = enabled;
1916 		dcbx_set.config.params.ets_willing = willing;
1917 		break;
1918 	case DCB_FEATCFG_ATTR_PFC:
1919 		dcbx_set.override_flags |= QED_DCBX_OVERRIDE_PFC_CFG;
1920 		dcbx_set.config.params.pfc.enabled = enabled;
1921 		dcbx_set.config.params.pfc.willing = willing;
1922 		break;
1923 	case DCB_FEATCFG_ATTR_APP:
1924 		dcbx_set.override_flags |= QED_DCBX_OVERRIDE_APP_CFG;
1925 		dcbx_set.config.params.app_willing = willing;
1926 		break;
1927 	default:
1928 		DP_INFO(hwfn, "Invalid feature-ID %d\n", featid);
1929 		return 1;
1930 	}
1931 
1932 	ptt = qed_ptt_acquire(hwfn);
1933 	if (!ptt)
1934 		return 1;
1935 
1936 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
1937 
1938 	qed_ptt_release(hwfn, ptt);
1939 
1940 	return 0;
1941 }
1942 
1943 static int qed_dcbnl_peer_getappinfo(struct qed_dev *cdev,
1944 				     struct dcb_peer_app_info *info,
1945 				     u16 *app_count)
1946 {
1947 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1948 	struct qed_dcbx_get *dcbx_info;
1949 
1950 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_REMOTE_MIB);
1951 	if (!dcbx_info)
1952 		return -EINVAL;
1953 
1954 	info->willing = dcbx_info->remote.params.app_willing;
1955 	info->error = dcbx_info->remote.params.app_error;
1956 	*app_count = dcbx_info->remote.params.num_app_entries;
1957 	kfree(dcbx_info);
1958 
1959 	return 0;
1960 }
1961 
1962 static int qed_dcbnl_peer_getapptable(struct qed_dev *cdev,
1963 				      struct dcb_app *table)
1964 {
1965 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1966 	struct qed_dcbx_get *dcbx_info;
1967 	int i;
1968 
1969 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_REMOTE_MIB);
1970 	if (!dcbx_info)
1971 		return -EINVAL;
1972 
1973 	for (i = 0; i < dcbx_info->remote.params.num_app_entries; i++) {
1974 		if (dcbx_info->remote.params.app_entry[i].ethtype)
1975 			table[i].selector = DCB_APP_IDTYPE_ETHTYPE;
1976 		else
1977 			table[i].selector = DCB_APP_IDTYPE_PORTNUM;
1978 		table[i].priority = dcbx_info->remote.params.app_entry[i].prio;
1979 		table[i].protocol =
1980 		    dcbx_info->remote.params.app_entry[i].proto_id;
1981 	}
1982 
1983 	kfree(dcbx_info);
1984 
1985 	return 0;
1986 }
1987 
1988 static int qed_dcbnl_cee_peer_getpfc(struct qed_dev *cdev, struct cee_pfc *pfc)
1989 {
1990 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1991 	struct qed_dcbx_get *dcbx_info;
1992 	int i;
1993 
1994 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_REMOTE_MIB);
1995 	if (!dcbx_info)
1996 		return -EINVAL;
1997 
1998 	for (i = 0; i < QED_MAX_PFC_PRIORITIES; i++)
1999 		if (dcbx_info->remote.params.pfc.prio[i])
2000 			pfc->pfc_en |= BIT(i);
2001 
2002 	pfc->tcs_supported = dcbx_info->remote.params.pfc.max_tc;
2003 	DP_VERBOSE(hwfn, QED_MSG_DCB, "pfc state = %d tcs_supported = %d\n",
2004 		   pfc->pfc_en, pfc->tcs_supported);
2005 	kfree(dcbx_info);
2006 
2007 	return 0;
2008 }
2009 
2010 static int qed_dcbnl_cee_peer_getpg(struct qed_dev *cdev, struct cee_pg *pg)
2011 {
2012 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
2013 	struct qed_dcbx_get *dcbx_info;
2014 	int i;
2015 
2016 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_REMOTE_MIB);
2017 	if (!dcbx_info)
2018 		return -EINVAL;
2019 
2020 	pg->willing = dcbx_info->remote.params.ets_willing;
2021 	for (i = 0; i < QED_MAX_PFC_PRIORITIES; i++) {
2022 		pg->pg_bw[i] = dcbx_info->remote.params.ets_tc_bw_tbl[i];
2023 		pg->prio_pg[i] = dcbx_info->remote.params.ets_pri_tc_tbl[i];
2024 	}
2025 
2026 	DP_VERBOSE(hwfn, QED_MSG_DCB, "willing = %d", pg->willing);
2027 	kfree(dcbx_info);
2028 
2029 	return 0;
2030 }
2031 
2032 static int qed_dcbnl_get_ieee_pfc(struct qed_dev *cdev,
2033 				  struct ieee_pfc *pfc, bool remote)
2034 {
2035 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
2036 	struct qed_dcbx_params *params;
2037 	struct qed_dcbx_get *dcbx_info;
2038 	int rc, i;
2039 
2040 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
2041 	if (!dcbx_info)
2042 		return -EINVAL;
2043 
2044 	if (!dcbx_info->operational.ieee) {
2045 		DP_INFO(hwfn, "DCBX is not enabled/operational in IEEE mode\n");
2046 		kfree(dcbx_info);
2047 		return -EINVAL;
2048 	}
2049 
2050 	if (remote) {
2051 		memset(dcbx_info, 0, sizeof(*dcbx_info));
2052 		rc = qed_dcbx_query_params(hwfn, dcbx_info,
2053 					   QED_DCBX_REMOTE_MIB);
2054 		if (rc) {
2055 			kfree(dcbx_info);
2056 			return -EINVAL;
2057 		}
2058 
2059 		params = &dcbx_info->remote.params;
2060 	} else {
2061 		params = &dcbx_info->operational.params;
2062 	}
2063 
2064 	pfc->pfc_cap = params->pfc.max_tc;
2065 	pfc->pfc_en = 0;
2066 	for (i = 0; i < QED_MAX_PFC_PRIORITIES; i++)
2067 		if (params->pfc.prio[i])
2068 			pfc->pfc_en |= BIT(i);
2069 
2070 	kfree(dcbx_info);
2071 
2072 	return 0;
2073 }
2074 
2075 static int qed_dcbnl_ieee_getpfc(struct qed_dev *cdev, struct ieee_pfc *pfc)
2076 {
2077 	return qed_dcbnl_get_ieee_pfc(cdev, pfc, false);
2078 }
2079 
2080 static int qed_dcbnl_ieee_setpfc(struct qed_dev *cdev, struct ieee_pfc *pfc)
2081 {
2082 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
2083 	struct qed_dcbx_get *dcbx_info;
2084 	struct qed_dcbx_set dcbx_set;
2085 	struct qed_ptt *ptt;
2086 	int rc, i;
2087 
2088 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
2089 	if (!dcbx_info)
2090 		return -EINVAL;
2091 
2092 	if (!dcbx_info->operational.ieee) {
2093 		DP_INFO(hwfn, "DCBX is not enabled/operational in IEEE mode\n");
2094 		kfree(dcbx_info);
2095 		return -EINVAL;
2096 	}
2097 
2098 	kfree(dcbx_info);
2099 
2100 	memset(&dcbx_set, 0, sizeof(dcbx_set));
2101 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
2102 	if (rc)
2103 		return -EINVAL;
2104 
2105 	dcbx_set.override_flags |= QED_DCBX_OVERRIDE_PFC_CFG;
2106 	for (i = 0; i < QED_MAX_PFC_PRIORITIES; i++)
2107 		dcbx_set.config.params.pfc.prio[i] = !!(pfc->pfc_en & BIT(i));
2108 
2109 	dcbx_set.config.params.pfc.max_tc = pfc->pfc_cap;
2110 
2111 	ptt = qed_ptt_acquire(hwfn);
2112 	if (!ptt)
2113 		return -EINVAL;
2114 
2115 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
2116 
2117 	qed_ptt_release(hwfn, ptt);
2118 
2119 	return rc;
2120 }
2121 
2122 static int qed_dcbnl_get_ieee_ets(struct qed_dev *cdev,
2123 				  struct ieee_ets *ets, bool remote)
2124 {
2125 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
2126 	struct qed_dcbx_get *dcbx_info;
2127 	struct qed_dcbx_params *params;
2128 	int rc;
2129 
2130 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
2131 	if (!dcbx_info)
2132 		return -EINVAL;
2133 
2134 	if (!dcbx_info->operational.ieee) {
2135 		DP_INFO(hwfn, "DCBX is not enabled/operational in IEEE mode\n");
2136 		kfree(dcbx_info);
2137 		return -EINVAL;
2138 	}
2139 
2140 	if (remote) {
2141 		memset(dcbx_info, 0, sizeof(*dcbx_info));
2142 		rc = qed_dcbx_query_params(hwfn, dcbx_info,
2143 					   QED_DCBX_REMOTE_MIB);
2144 		if (rc) {
2145 			kfree(dcbx_info);
2146 			return -EINVAL;
2147 		}
2148 
2149 		params = &dcbx_info->remote.params;
2150 	} else {
2151 		params = &dcbx_info->operational.params;
2152 	}
2153 
2154 	ets->ets_cap = params->max_ets_tc;
2155 	ets->willing = params->ets_willing;
2156 	ets->cbs = params->ets_cbs;
2157 	memcpy(ets->tc_tx_bw, params->ets_tc_bw_tbl, sizeof(ets->tc_tx_bw));
2158 	memcpy(ets->tc_tsa, params->ets_tc_tsa_tbl, sizeof(ets->tc_tsa));
2159 	memcpy(ets->prio_tc, params->ets_pri_tc_tbl, sizeof(ets->prio_tc));
2160 	kfree(dcbx_info);
2161 
2162 	return 0;
2163 }
2164 
2165 static int qed_dcbnl_ieee_getets(struct qed_dev *cdev, struct ieee_ets *ets)
2166 {
2167 	return qed_dcbnl_get_ieee_ets(cdev, ets, false);
2168 }
2169 
2170 static int qed_dcbnl_ieee_setets(struct qed_dev *cdev, struct ieee_ets *ets)
2171 {
2172 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
2173 	struct qed_dcbx_get *dcbx_info;
2174 	struct qed_dcbx_set dcbx_set;
2175 	struct qed_ptt *ptt;
2176 	int rc;
2177 
2178 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
2179 	if (!dcbx_info)
2180 		return -EINVAL;
2181 
2182 	if (!dcbx_info->operational.ieee) {
2183 		DP_INFO(hwfn, "DCBX is not enabled/operational in IEEE mode\n");
2184 		kfree(dcbx_info);
2185 		return -EINVAL;
2186 	}
2187 
2188 	kfree(dcbx_info);
2189 
2190 	memset(&dcbx_set, 0, sizeof(dcbx_set));
2191 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
2192 	if (rc)
2193 		return -EINVAL;
2194 
2195 	dcbx_set.override_flags |= QED_DCBX_OVERRIDE_ETS_CFG;
2196 	dcbx_set.config.params.max_ets_tc = ets->ets_cap;
2197 	dcbx_set.config.params.ets_willing = ets->willing;
2198 	dcbx_set.config.params.ets_cbs = ets->cbs;
2199 	memcpy(dcbx_set.config.params.ets_tc_bw_tbl, ets->tc_tx_bw,
2200 	       sizeof(ets->tc_tx_bw));
2201 	memcpy(dcbx_set.config.params.ets_tc_tsa_tbl, ets->tc_tsa,
2202 	       sizeof(ets->tc_tsa));
2203 	memcpy(dcbx_set.config.params.ets_pri_tc_tbl, ets->prio_tc,
2204 	       sizeof(ets->prio_tc));
2205 
2206 	ptt = qed_ptt_acquire(hwfn);
2207 	if (!ptt)
2208 		return -EINVAL;
2209 
2210 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
2211 
2212 	qed_ptt_release(hwfn, ptt);
2213 
2214 	return rc;
2215 }
2216 
2217 static int
2218 qed_dcbnl_ieee_peer_getets(struct qed_dev *cdev, struct ieee_ets *ets)
2219 {
2220 	return qed_dcbnl_get_ieee_ets(cdev, ets, true);
2221 }
2222 
2223 static int
2224 qed_dcbnl_ieee_peer_getpfc(struct qed_dev *cdev, struct ieee_pfc *pfc)
2225 {
2226 	return qed_dcbnl_get_ieee_pfc(cdev, pfc, true);
2227 }
2228 
2229 static int qed_get_sf_ieee_value(u8 selector, u8 *sf_ieee)
2230 {
2231 	switch (selector) {
2232 	case IEEE_8021QAZ_APP_SEL_ETHERTYPE:
2233 		*sf_ieee = QED_DCBX_SF_IEEE_ETHTYPE;
2234 		break;
2235 	case IEEE_8021QAZ_APP_SEL_STREAM:
2236 		*sf_ieee = QED_DCBX_SF_IEEE_TCP_PORT;
2237 		break;
2238 	case IEEE_8021QAZ_APP_SEL_DGRAM:
2239 		*sf_ieee = QED_DCBX_SF_IEEE_UDP_PORT;
2240 		break;
2241 	case IEEE_8021QAZ_APP_SEL_ANY:
2242 		*sf_ieee = QED_DCBX_SF_IEEE_TCP_UDP_PORT;
2243 		break;
2244 	default:
2245 		return -EINVAL;
2246 	}
2247 
2248 	return 0;
2249 }
2250 
2251 static int qed_dcbnl_ieee_getapp(struct qed_dev *cdev, struct dcb_app *app)
2252 {
2253 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
2254 	struct qed_dcbx_get *dcbx_info;
2255 	struct qed_app_entry *entry;
2256 	u8 prio = 0;
2257 	u8 sf_ieee;
2258 	int i;
2259 
2260 	DP_VERBOSE(hwfn, QED_MSG_DCB, "selector = %d protocol = %d\n",
2261 		   app->selector, app->protocol);
2262 
2263 	if (qed_get_sf_ieee_value(app->selector, &sf_ieee)) {
2264 		DP_INFO(cdev, "Invalid selector field value %d\n",
2265 			app->selector);
2266 		return -EINVAL;
2267 	}
2268 
2269 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
2270 	if (!dcbx_info)
2271 		return -EINVAL;
2272 
2273 	if (!dcbx_info->operational.ieee) {
2274 		DP_INFO(hwfn, "DCBX is not enabled/operational in IEEE mode\n");
2275 		kfree(dcbx_info);
2276 		return -EINVAL;
2277 	}
2278 
2279 	for (i = 0; i < QED_DCBX_MAX_APP_PROTOCOL; i++) {
2280 		entry = &dcbx_info->operational.params.app_entry[i];
2281 		if ((entry->sf_ieee == sf_ieee) &&
2282 		    (entry->proto_id == app->protocol)) {
2283 			prio = entry->prio;
2284 			break;
2285 		}
2286 	}
2287 
2288 	if (i == QED_DCBX_MAX_APP_PROTOCOL) {
2289 		DP_ERR(cdev, "App entry (%d, %d) not found\n", app->selector,
2290 		       app->protocol);
2291 		kfree(dcbx_info);
2292 		return -EINVAL;
2293 	}
2294 
2295 	app->priority = ffs(prio) - 1;
2296 
2297 	kfree(dcbx_info);
2298 
2299 	return 0;
2300 }
2301 
2302 static int qed_dcbnl_ieee_setapp(struct qed_dev *cdev, struct dcb_app *app)
2303 {
2304 	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
2305 	struct qed_dcbx_get *dcbx_info;
2306 	struct qed_dcbx_set dcbx_set;
2307 	struct qed_app_entry *entry;
2308 	struct qed_ptt *ptt;
2309 	u8 sf_ieee;
2310 	int rc, i;
2311 
2312 	DP_VERBOSE(hwfn, QED_MSG_DCB, "selector = %d protocol = %d pri = %d\n",
2313 		   app->selector, app->protocol, app->priority);
2314 	if (app->priority >= QED_MAX_PFC_PRIORITIES) {
2315 		DP_INFO(hwfn, "Invalid priority %d\n", app->priority);
2316 		return -EINVAL;
2317 	}
2318 
2319 	if (qed_get_sf_ieee_value(app->selector, &sf_ieee)) {
2320 		DP_INFO(cdev, "Invalid selector field value %d\n",
2321 			app->selector);
2322 		return -EINVAL;
2323 	}
2324 
2325 	dcbx_info = qed_dcbnl_get_dcbx(hwfn, QED_DCBX_OPERATIONAL_MIB);
2326 	if (!dcbx_info)
2327 		return -EINVAL;
2328 
2329 	if (!dcbx_info->operational.ieee) {
2330 		DP_INFO(hwfn, "DCBX is not enabled/operational in IEEE mode\n");
2331 		kfree(dcbx_info);
2332 		return -EINVAL;
2333 	}
2334 
2335 	kfree(dcbx_info);
2336 
2337 	memset(&dcbx_set, 0, sizeof(dcbx_set));
2338 	rc = qed_dcbx_get_config_params(hwfn, &dcbx_set);
2339 	if (rc)
2340 		return -EINVAL;
2341 
2342 	for (i = 0; i < QED_DCBX_MAX_APP_PROTOCOL; i++) {
2343 		entry = &dcbx_set.config.params.app_entry[i];
2344 		if ((entry->sf_ieee == sf_ieee) &&
2345 		    (entry->proto_id == app->protocol))
2346 			break;
2347 		/* First empty slot */
2348 		if (!entry->proto_id) {
2349 			dcbx_set.config.params.num_app_entries++;
2350 			break;
2351 		}
2352 	}
2353 
2354 	if (i == QED_DCBX_MAX_APP_PROTOCOL) {
2355 		DP_ERR(cdev, "App table is full\n");
2356 		return -EBUSY;
2357 	}
2358 
2359 	dcbx_set.override_flags |= QED_DCBX_OVERRIDE_APP_CFG;
2360 	dcbx_set.config.params.app_entry[i].sf_ieee = sf_ieee;
2361 	dcbx_set.config.params.app_entry[i].proto_id = app->protocol;
2362 	dcbx_set.config.params.app_entry[i].prio = BIT(app->priority);
2363 
2364 	ptt = qed_ptt_acquire(hwfn);
2365 	if (!ptt)
2366 		return -EBUSY;
2367 
2368 	rc = qed_dcbx_config_params(hwfn, ptt, &dcbx_set, 0);
2369 
2370 	qed_ptt_release(hwfn, ptt);
2371 
2372 	return rc;
2373 }
2374 
2375 const struct qed_eth_dcbnl_ops qed_dcbnl_ops_pass = {
2376 	.getstate = qed_dcbnl_getstate,
2377 	.setstate = qed_dcbnl_setstate,
2378 	.getpgtccfgtx = qed_dcbnl_getpgtccfgtx,
2379 	.getpgbwgcfgtx = qed_dcbnl_getpgbwgcfgtx,
2380 	.getpgtccfgrx = qed_dcbnl_getpgtccfgrx,
2381 	.getpgbwgcfgrx = qed_dcbnl_getpgbwgcfgrx,
2382 	.getpfccfg = qed_dcbnl_getpfccfg,
2383 	.setpfccfg = qed_dcbnl_setpfccfg,
2384 	.getcap = qed_dcbnl_getcap,
2385 	.getnumtcs = qed_dcbnl_getnumtcs,
2386 	.getpfcstate = qed_dcbnl_getpfcstate,
2387 	.getdcbx = qed_dcbnl_getdcbx,
2388 	.setpgtccfgtx = qed_dcbnl_setpgtccfgtx,
2389 	.setpgtccfgrx = qed_dcbnl_setpgtccfgrx,
2390 	.setpgbwgcfgtx = qed_dcbnl_setpgbwgcfgtx,
2391 	.setpgbwgcfgrx = qed_dcbnl_setpgbwgcfgrx,
2392 	.setall = qed_dcbnl_setall,
2393 	.setnumtcs = qed_dcbnl_setnumtcs,
2394 	.setpfcstate = qed_dcbnl_setpfcstate,
2395 	.setapp = qed_dcbnl_setapp,
2396 	.setdcbx = qed_dcbnl_setdcbx,
2397 	.setfeatcfg = qed_dcbnl_setfeatcfg,
2398 	.getfeatcfg = qed_dcbnl_getfeatcfg,
2399 	.getapp = qed_dcbnl_getapp,
2400 	.peer_getappinfo = qed_dcbnl_peer_getappinfo,
2401 	.peer_getapptable = qed_dcbnl_peer_getapptable,
2402 	.cee_peer_getpfc = qed_dcbnl_cee_peer_getpfc,
2403 	.cee_peer_getpg = qed_dcbnl_cee_peer_getpg,
2404 	.ieee_getpfc = qed_dcbnl_ieee_getpfc,
2405 	.ieee_setpfc = qed_dcbnl_ieee_setpfc,
2406 	.ieee_getets = qed_dcbnl_ieee_getets,
2407 	.ieee_setets = qed_dcbnl_ieee_setets,
2408 	.ieee_peer_getpfc = qed_dcbnl_ieee_peer_getpfc,
2409 	.ieee_peer_getets = qed_dcbnl_ieee_peer_getets,
2410 	.ieee_getapp = qed_dcbnl_ieee_getapp,
2411 	.ieee_setapp = qed_dcbnl_ieee_setapp,
2412 };
2413 
2414 #endif
2415