1 /* bnx2x_dcb.c: QLogic Everest network driver.
2  *
3  * Copyright 2009-2013 Broadcom Corporation
4  * Copyright 2014 QLogic Corporation
5  * All rights reserved
6  *
7  * Unless you and QLogic execute a separate written software license
8  * agreement governing use of this software, this software is licensed to you
9  * under the terms of the GNU General Public License version 2, available
10  * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL").
11  *
12  * Notwithstanding the above, under no circumstances may you combine this
13  * software in any way with any other QLogic software provided under a
14  * license other than the GPL, without QLogic's express prior written
15  * consent.
16  *
17  * Maintained by: Ariel Elior <ariel.elior@qlogic.com>
18  * Written by: Dmitry Kravkov
19  *
20  */
21 
22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
23 
24 #include <linux/netdevice.h>
25 #include <linux/types.h>
26 #include <linux/errno.h>
27 #include <linux/rtnetlink.h>
28 #include <net/dcbnl.h>
29 
30 #include "bnx2x.h"
31 #include "bnx2x_cmn.h"
32 #include "bnx2x_dcb.h"
33 
34 /* forward declarations of dcbx related functions */
35 static void bnx2x_pfc_set_pfc(struct bnx2x *bp);
36 static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp);
37 static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp,
38 					  u32 *set_configuration_ets_pg,
39 					  u32 *pri_pg_tbl);
40 static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp,
41 					    u32 *pg_pri_orginal_spread,
42 					    struct pg_help_data *help_data);
43 static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
44 				       struct pg_help_data *help_data,
45 				       struct dcbx_ets_feature *ets,
46 				       u32 *pg_pri_orginal_spread);
47 static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp,
48 				struct cos_help_data *cos_data,
49 				u32 *pg_pri_orginal_spread,
50 				struct dcbx_ets_feature *ets);
51 static void bnx2x_dcbx_fw_struct(struct bnx2x *bp,
52 				 struct bnx2x_func_tx_start_params*);
53 
54 /* helpers: read/write len bytes from addr into buff by REG_RD/REG_WR */
bnx2x_read_data(struct bnx2x * bp,u32 * buff,u32 addr,u32 len)55 static void bnx2x_read_data(struct bnx2x *bp, u32 *buff,
56 				   u32 addr, u32 len)
57 {
58 	int i;
59 	for (i = 0; i < len; i += 4, buff++)
60 		*buff = REG_RD(bp, addr + i);
61 }
62 
bnx2x_write_data(struct bnx2x * bp,u32 * buff,u32 addr,u32 len)63 static void bnx2x_write_data(struct bnx2x *bp, u32 *buff,
64 				    u32 addr, u32 len)
65 {
66 	int i;
67 	for (i = 0; i < len; i += 4, buff++)
68 		REG_WR(bp, addr + i, *buff);
69 }
70 
bnx2x_pfc_set(struct bnx2x * bp)71 static void bnx2x_pfc_set(struct bnx2x *bp)
72 {
73 	struct bnx2x_nig_brb_pfc_port_params pfc_params = {0};
74 	u32 pri_bit, val = 0;
75 	int i;
76 
77 	pfc_params.num_of_rx_cos_priority_mask =
78 					bp->dcbx_port_params.ets.num_of_cos;
79 
80 	/* Tx COS configuration */
81 	for (i = 0; i < bp->dcbx_port_params.ets.num_of_cos; i++)
82 		/*
83 		 * We configure only the pauseable bits (non pauseable aren't
84 		 * configured at all) it's done to avoid false pauses from
85 		 * network
86 		 */
87 		pfc_params.rx_cos_priority_mask[i] =
88 			bp->dcbx_port_params.ets.cos_params[i].pri_bitmask
89 				& DCBX_PFC_PRI_PAUSE_MASK(bp);
90 
91 	/*
92 	 * Rx COS configuration
93 	 * Changing PFC RX configuration .
94 	 * In RX COS0 will always be configured to lossless and COS1 to lossy
95 	 */
96 	for (i = 0 ; i < MAX_PFC_PRIORITIES ; i++) {
97 		pri_bit = 1 << i;
98 
99 		if (!(pri_bit & DCBX_PFC_PRI_PAUSE_MASK(bp)))
100 			val |= 1 << (i * 4);
101 	}
102 
103 	pfc_params.pkt_priority_to_cos = val;
104 
105 	/* RX COS0 */
106 	pfc_params.llfc_low_priority_classes = DCBX_PFC_PRI_PAUSE_MASK(bp);
107 	/* RX COS1 */
108 	pfc_params.llfc_high_priority_classes = 0;
109 
110 	bnx2x_acquire_phy_lock(bp);
111 	bp->link_params.feature_config_flags |= FEATURE_CONFIG_PFC_ENABLED;
112 	bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &pfc_params);
113 	bnx2x_release_phy_lock(bp);
114 }
115 
bnx2x_pfc_clear(struct bnx2x * bp)116 static void bnx2x_pfc_clear(struct bnx2x *bp)
117 {
118 	struct bnx2x_nig_brb_pfc_port_params nig_params = {0};
119 	nig_params.pause_enable = 1;
120 	bnx2x_acquire_phy_lock(bp);
121 	bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_PFC_ENABLED;
122 	bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &nig_params);
123 	bnx2x_release_phy_lock(bp);
124 }
125 
bnx2x_dump_dcbx_drv_param(struct bnx2x * bp,struct dcbx_features * features,u32 error)126 static void  bnx2x_dump_dcbx_drv_param(struct bnx2x *bp,
127 				       struct dcbx_features *features,
128 				       u32 error)
129 {
130 	u8 i = 0;
131 	DP(NETIF_MSG_LINK, "local_mib.error %x\n", error);
132 
133 	/* PG */
134 	DP(NETIF_MSG_LINK,
135 	   "local_mib.features.ets.enabled %x\n", features->ets.enabled);
136 	for (i = 0; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++)
137 		DP(NETIF_MSG_LINK,
138 		   "local_mib.features.ets.pg_bw_tbl[%d] %d\n", i,
139 		   DCBX_PG_BW_GET(features->ets.pg_bw_tbl, i));
140 	for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++)
141 		DP(NETIF_MSG_LINK,
142 		   "local_mib.features.ets.pri_pg_tbl[%d] %d\n", i,
143 		   DCBX_PRI_PG_GET(features->ets.pri_pg_tbl, i));
144 
145 	/* pfc */
146 	DP(BNX2X_MSG_DCB, "dcbx_features.pfc.pri_en_bitmap %x\n",
147 					features->pfc.pri_en_bitmap);
148 	DP(BNX2X_MSG_DCB, "dcbx_features.pfc.pfc_caps %x\n",
149 					features->pfc.pfc_caps);
150 	DP(BNX2X_MSG_DCB, "dcbx_features.pfc.enabled %x\n",
151 					features->pfc.enabled);
152 
153 	DP(BNX2X_MSG_DCB, "dcbx_features.app.default_pri %x\n",
154 					features->app.default_pri);
155 	DP(BNX2X_MSG_DCB, "dcbx_features.app.tc_supported %x\n",
156 					features->app.tc_supported);
157 	DP(BNX2X_MSG_DCB, "dcbx_features.app.enabled %x\n",
158 					features->app.enabled);
159 	for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
160 		DP(BNX2X_MSG_DCB,
161 		   "dcbx_features.app.app_pri_tbl[%x].app_id %x\n",
162 		   i, features->app.app_pri_tbl[i].app_id);
163 		DP(BNX2X_MSG_DCB,
164 		   "dcbx_features.app.app_pri_tbl[%x].pri_bitmap %x\n",
165 		   i, features->app.app_pri_tbl[i].pri_bitmap);
166 		DP(BNX2X_MSG_DCB,
167 		   "dcbx_features.app.app_pri_tbl[%x].appBitfield %x\n",
168 		   i, features->app.app_pri_tbl[i].appBitfield);
169 	}
170 }
171 
bnx2x_dcbx_get_ap_priority(struct bnx2x * bp,u8 pri_bitmap,u8 llfc_traf_type)172 static void bnx2x_dcbx_get_ap_priority(struct bnx2x *bp,
173 				       u8 pri_bitmap,
174 				       u8 llfc_traf_type)
175 {
176 	u32 pri = MAX_PFC_PRIORITIES;
177 	u32 index = MAX_PFC_PRIORITIES - 1;
178 	u32 pri_mask;
179 	u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
180 
181 	/* Choose the highest priority */
182 	while ((MAX_PFC_PRIORITIES == pri) && (0 != index)) {
183 		pri_mask = 1 << index;
184 		if (GET_FLAGS(pri_bitmap, pri_mask))
185 			pri = index ;
186 		index--;
187 	}
188 
189 	if (pri < MAX_PFC_PRIORITIES)
190 		ttp[llfc_traf_type] = max_t(u32, ttp[llfc_traf_type], pri);
191 }
192 
bnx2x_dcbx_get_ap_feature(struct bnx2x * bp,struct dcbx_app_priority_feature * app,u32 error)193 static void bnx2x_dcbx_get_ap_feature(struct bnx2x *bp,
194 				   struct dcbx_app_priority_feature *app,
195 				   u32 error) {
196 	u8 index;
197 	u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
198 	u8 iscsi_pri_found = 0, fcoe_pri_found = 0;
199 
200 	if (GET_FLAGS(error, DCBX_LOCAL_APP_ERROR))
201 		DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_ERROR\n");
202 
203 	if (GET_FLAGS(error, DCBX_LOCAL_APP_MISMATCH))
204 		DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_MISMATCH\n");
205 
206 	if (GET_FLAGS(error, DCBX_REMOTE_APP_TLV_NOT_FOUND))
207 		DP(BNX2X_MSG_DCB, "DCBX_REMOTE_APP_TLV_NOT_FOUND\n");
208 	if (app->enabled &&
209 	    !GET_FLAGS(error, DCBX_LOCAL_APP_ERROR | DCBX_LOCAL_APP_MISMATCH |
210 			      DCBX_REMOTE_APP_TLV_NOT_FOUND)) {
211 
212 		bp->dcbx_port_params.app.enabled = true;
213 
214 		/* Use 0 as the default application priority for all. */
215 		for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
216 			ttp[index] = 0;
217 
218 		for (index = 0 ; index < DCBX_MAX_APP_PROTOCOL; index++) {
219 			struct dcbx_app_priority_entry *entry =
220 							app->app_pri_tbl;
221 			enum traffic_type type = MAX_TRAFFIC_TYPE;
222 
223 			if (GET_FLAGS(entry[index].appBitfield,
224 				      DCBX_APP_SF_DEFAULT) &&
225 			    GET_FLAGS(entry[index].appBitfield,
226 				      DCBX_APP_SF_ETH_TYPE)) {
227 				type = LLFC_TRAFFIC_TYPE_NW;
228 			} else if (GET_FLAGS(entry[index].appBitfield,
229 					     DCBX_APP_SF_PORT) &&
230 				   TCP_PORT_ISCSI == entry[index].app_id) {
231 				type = LLFC_TRAFFIC_TYPE_ISCSI;
232 				iscsi_pri_found = 1;
233 			} else if (GET_FLAGS(entry[index].appBitfield,
234 					     DCBX_APP_SF_ETH_TYPE) &&
235 				   ETH_TYPE_FCOE == entry[index].app_id) {
236 				type = LLFC_TRAFFIC_TYPE_FCOE;
237 				fcoe_pri_found = 1;
238 			}
239 
240 			if (type == MAX_TRAFFIC_TYPE)
241 				continue;
242 
243 			bnx2x_dcbx_get_ap_priority(bp,
244 						   entry[index].pri_bitmap,
245 						   type);
246 		}
247 
248 		/* If we have received a non-zero default application
249 		 * priority, then use that for applications which are
250 		 * not configured with any priority.
251 		 */
252 		if (ttp[LLFC_TRAFFIC_TYPE_NW] != 0) {
253 			if (!iscsi_pri_found) {
254 				ttp[LLFC_TRAFFIC_TYPE_ISCSI] =
255 					ttp[LLFC_TRAFFIC_TYPE_NW];
256 				DP(BNX2X_MSG_DCB,
257 				   "ISCSI is using default priority.\n");
258 			}
259 			if (!fcoe_pri_found) {
260 				ttp[LLFC_TRAFFIC_TYPE_FCOE] =
261 					ttp[LLFC_TRAFFIC_TYPE_NW];
262 				DP(BNX2X_MSG_DCB,
263 				   "FCoE is using default priority.\n");
264 			}
265 		}
266 	} else {
267 		DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_DISABLED\n");
268 		bp->dcbx_port_params.app.enabled = false;
269 		for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
270 			ttp[index] = INVALID_TRAFFIC_TYPE_PRIORITY;
271 	}
272 }
273 
bnx2x_dcbx_get_ets_feature(struct bnx2x * bp,struct dcbx_ets_feature * ets,u32 error)274 static void bnx2x_dcbx_get_ets_feature(struct bnx2x *bp,
275 				       struct dcbx_ets_feature *ets,
276 				       u32 error) {
277 	int i = 0;
278 	u32 pg_pri_orginal_spread[DCBX_MAX_NUM_PG_BW_ENTRIES] = {0};
279 	struct pg_help_data pg_help_data;
280 	struct bnx2x_dcbx_cos_params *cos_params =
281 			bp->dcbx_port_params.ets.cos_params;
282 
283 	memset(&pg_help_data, 0, sizeof(struct pg_help_data));
284 
285 	if (GET_FLAGS(error, DCBX_LOCAL_ETS_ERROR))
286 		DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_ERROR\n");
287 
288 	if (GET_FLAGS(error, DCBX_REMOTE_ETS_TLV_NOT_FOUND))
289 		DP(BNX2X_MSG_DCB, "DCBX_REMOTE_ETS_TLV_NOT_FOUND\n");
290 
291 	/* Clean up old settings of ets on COS */
292 	for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params) ; i++) {
293 		cos_params[i].pauseable = false;
294 		cos_params[i].strict = BNX2X_DCBX_STRICT_INVALID;
295 		cos_params[i].bw_tbl = DCBX_INVALID_COS_BW;
296 		cos_params[i].pri_bitmask = 0;
297 	}
298 
299 	if (bp->dcbx_port_params.app.enabled && ets->enabled &&
300 	   !GET_FLAGS(error,
301 		      DCBX_LOCAL_ETS_ERROR | DCBX_REMOTE_ETS_TLV_NOT_FOUND)) {
302 		DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_ENABLE\n");
303 		bp->dcbx_port_params.ets.enabled = true;
304 
305 		bnx2x_dcbx_get_ets_pri_pg_tbl(bp,
306 					      pg_pri_orginal_spread,
307 					      ets->pri_pg_tbl);
308 
309 		bnx2x_dcbx_get_num_pg_traf_type(bp,
310 						pg_pri_orginal_spread,
311 						&pg_help_data);
312 
313 		bnx2x_dcbx_fill_cos_params(bp, &pg_help_data,
314 					   ets, pg_pri_orginal_spread);
315 
316 	} else {
317 		DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_DISABLED\n");
318 		bp->dcbx_port_params.ets.enabled = false;
319 		ets->pri_pg_tbl[0] = 0;
320 
321 		for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES ; i++)
322 			DCBX_PG_BW_SET(ets->pg_bw_tbl, i, 1);
323 	}
324 }
325 
bnx2x_dcbx_get_pfc_feature(struct bnx2x * bp,struct dcbx_pfc_feature * pfc,u32 error)326 static void  bnx2x_dcbx_get_pfc_feature(struct bnx2x *bp,
327 					struct dcbx_pfc_feature *pfc, u32 error)
328 {
329 	if (GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR))
330 		DP(BNX2X_MSG_DCB, "DCBX_LOCAL_PFC_ERROR\n");
331 
332 	if (GET_FLAGS(error, DCBX_REMOTE_PFC_TLV_NOT_FOUND))
333 		DP(BNX2X_MSG_DCB, "DCBX_REMOTE_PFC_TLV_NOT_FOUND\n");
334 	if (bp->dcbx_port_params.app.enabled && pfc->enabled &&
335 	   !GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR | DCBX_LOCAL_PFC_MISMATCH |
336 			     DCBX_REMOTE_PFC_TLV_NOT_FOUND)) {
337 		bp->dcbx_port_params.pfc.enabled = true;
338 		bp->dcbx_port_params.pfc.priority_non_pauseable_mask =
339 			~(pfc->pri_en_bitmap);
340 	} else {
341 		DP(BNX2X_MSG_DCB, "DCBX_LOCAL_PFC_DISABLED\n");
342 		bp->dcbx_port_params.pfc.enabled = false;
343 		bp->dcbx_port_params.pfc.priority_non_pauseable_mask = 0;
344 	}
345 }
346 
347 /* maps unmapped priorities to to the same COS as L2 */
bnx2x_dcbx_map_nw(struct bnx2x * bp)348 static void bnx2x_dcbx_map_nw(struct bnx2x *bp)
349 {
350 	int i;
351 	u32 unmapped = (1 << MAX_PFC_PRIORITIES) - 1; /* all ones */
352 	u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
353 	u32 nw_prio = 1 << ttp[LLFC_TRAFFIC_TYPE_NW];
354 	struct bnx2x_dcbx_cos_params *cos_params =
355 			bp->dcbx_port_params.ets.cos_params;
356 
357 	/* get unmapped priorities by clearing mapped bits */
358 	for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
359 		unmapped &= ~(1 << ttp[i]);
360 
361 	/* find cos for nw prio and extend it with unmapped */
362 	for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params); i++) {
363 		if (cos_params[i].pri_bitmask & nw_prio) {
364 			/* extend the bitmask with unmapped */
365 			DP(BNX2X_MSG_DCB,
366 			   "cos %d extended with 0x%08x\n", i, unmapped);
367 			cos_params[i].pri_bitmask |= unmapped;
368 			break;
369 		}
370 	}
371 }
372 
bnx2x_get_dcbx_drv_param(struct bnx2x * bp,struct dcbx_features * features,u32 error)373 static void bnx2x_get_dcbx_drv_param(struct bnx2x *bp,
374 				     struct dcbx_features *features,
375 				     u32 error)
376 {
377 	bnx2x_dcbx_get_ap_feature(bp, &features->app, error);
378 
379 	bnx2x_dcbx_get_pfc_feature(bp, &features->pfc, error);
380 
381 	bnx2x_dcbx_get_ets_feature(bp, &features->ets, error);
382 
383 	bnx2x_dcbx_map_nw(bp);
384 }
385 
386 #define DCBX_LOCAL_MIB_MAX_TRY_READ		(100)
bnx2x_dcbx_read_mib(struct bnx2x * bp,u32 * base_mib_addr,u32 offset,int read_mib_type)387 static int bnx2x_dcbx_read_mib(struct bnx2x *bp,
388 			       u32 *base_mib_addr,
389 			       u32 offset,
390 			       int read_mib_type)
391 {
392 	int max_try_read = 0;
393 	u32 mib_size, prefix_seq_num, suffix_seq_num;
394 	struct lldp_remote_mib *remote_mib ;
395 	struct lldp_local_mib  *local_mib;
396 
397 	switch (read_mib_type) {
398 	case DCBX_READ_LOCAL_MIB:
399 		mib_size = sizeof(struct lldp_local_mib);
400 		break;
401 	case DCBX_READ_REMOTE_MIB:
402 		mib_size = sizeof(struct lldp_remote_mib);
403 		break;
404 	default:
405 		return 1; /*error*/
406 	}
407 
408 	offset += BP_PORT(bp) * mib_size;
409 
410 	do {
411 		bnx2x_read_data(bp, base_mib_addr, offset, mib_size);
412 
413 		max_try_read++;
414 
415 		switch (read_mib_type) {
416 		case DCBX_READ_LOCAL_MIB:
417 			local_mib = (struct lldp_local_mib *) base_mib_addr;
418 			prefix_seq_num = local_mib->prefix_seq_num;
419 			suffix_seq_num = local_mib->suffix_seq_num;
420 			break;
421 		case DCBX_READ_REMOTE_MIB:
422 			remote_mib = (struct lldp_remote_mib *) base_mib_addr;
423 			prefix_seq_num = remote_mib->prefix_seq_num;
424 			suffix_seq_num = remote_mib->suffix_seq_num;
425 			break;
426 		default:
427 			return 1; /*error*/
428 		}
429 	} while ((prefix_seq_num != suffix_seq_num) &&
430 	       (max_try_read < DCBX_LOCAL_MIB_MAX_TRY_READ));
431 
432 	if (max_try_read >= DCBX_LOCAL_MIB_MAX_TRY_READ) {
433 		BNX2X_ERR("MIB could not be read\n");
434 		return 1;
435 	}
436 
437 	return 0;
438 }
439 
bnx2x_pfc_set_pfc(struct bnx2x * bp)440 static void bnx2x_pfc_set_pfc(struct bnx2x *bp)
441 {
442 	int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
443 			     GET_FLAGS(SHMEM2_RD(bp, drv_flags),
444 				       1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
445 
446 	if (bp->dcbx_port_params.pfc.enabled &&
447 	    (!(bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) || mfw_configured))
448 		/*
449 		 * 1. Fills up common PFC structures if required
450 		 * 2. Configure NIG, MAC and BRB via the elink
451 		 */
452 		bnx2x_pfc_set(bp);
453 	else
454 		bnx2x_pfc_clear(bp);
455 }
456 
bnx2x_dcbx_stop_hw_tx(struct bnx2x * bp)457 int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp)
458 {
459 	struct bnx2x_func_state_params func_params = {NULL};
460 	int rc;
461 
462 	func_params.f_obj = &bp->func_obj;
463 	func_params.cmd = BNX2X_F_CMD_TX_STOP;
464 
465 	__set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
466 	__set_bit(RAMROD_RETRY, &func_params.ramrod_flags);
467 
468 	DP(BNX2X_MSG_DCB, "STOP TRAFFIC\n");
469 
470 	rc = bnx2x_func_state_change(bp, &func_params);
471 	if (rc) {
472 		BNX2X_ERR("Unable to hold traffic for HW configuration\n");
473 		bnx2x_panic();
474 	}
475 
476 	return rc;
477 }
478 
bnx2x_dcbx_resume_hw_tx(struct bnx2x * bp)479 int bnx2x_dcbx_resume_hw_tx(struct bnx2x *bp)
480 {
481 	struct bnx2x_func_state_params func_params = {NULL};
482 	struct bnx2x_func_tx_start_params *tx_params =
483 		&func_params.params.tx_start;
484 	int rc;
485 
486 	func_params.f_obj = &bp->func_obj;
487 	func_params.cmd = BNX2X_F_CMD_TX_START;
488 
489 	__set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
490 	__set_bit(RAMROD_RETRY, &func_params.ramrod_flags);
491 
492 	bnx2x_dcbx_fw_struct(bp, tx_params);
493 
494 	DP(BNX2X_MSG_DCB, "START TRAFFIC\n");
495 
496 	rc = bnx2x_func_state_change(bp, &func_params);
497 	if (rc) {
498 		BNX2X_ERR("Unable to resume traffic after HW configuration\n");
499 		bnx2x_panic();
500 	}
501 
502 	return rc;
503 }
504 
bnx2x_dcbx_2cos_limit_update_ets_config(struct bnx2x * bp)505 static void bnx2x_dcbx_2cos_limit_update_ets_config(struct bnx2x *bp)
506 {
507 	struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
508 	int rc = 0;
509 
510 	if (ets->num_of_cos == 0 || ets->num_of_cos > DCBX_COS_MAX_NUM_E2) {
511 		BNX2X_ERR("Illegal number of COSes %d\n", ets->num_of_cos);
512 		return;
513 	}
514 
515 	/* valid COS entries */
516 	if (ets->num_of_cos == 1)   /* no ETS */
517 		return;
518 
519 	/* sanity */
520 	if (((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[0].strict) &&
521 	     (DCBX_INVALID_COS_BW == ets->cos_params[0].bw_tbl)) ||
522 	    ((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[1].strict) &&
523 	     (DCBX_INVALID_COS_BW == ets->cos_params[1].bw_tbl))) {
524 		BNX2X_ERR("all COS should have at least bw_limit or strict"
525 			    "ets->cos_params[0].strict= %x"
526 			    "ets->cos_params[0].bw_tbl= %x"
527 			    "ets->cos_params[1].strict= %x"
528 			    "ets->cos_params[1].bw_tbl= %x",
529 			  ets->cos_params[0].strict,
530 			  ets->cos_params[0].bw_tbl,
531 			  ets->cos_params[1].strict,
532 			  ets->cos_params[1].bw_tbl);
533 		return;
534 	}
535 	/* If we join a group and there is bw_tbl and strict then bw rules */
536 	if ((DCBX_INVALID_COS_BW != ets->cos_params[0].bw_tbl) &&
537 	    (DCBX_INVALID_COS_BW != ets->cos_params[1].bw_tbl)) {
538 		u32 bw_tbl_0 = ets->cos_params[0].bw_tbl;
539 		u32 bw_tbl_1 = ets->cos_params[1].bw_tbl;
540 		/* Do not allow 0-100 configuration
541 		 * since PBF does not support it
542 		 * force 1-99 instead
543 		 */
544 		if (bw_tbl_0 == 0) {
545 			bw_tbl_0 = 1;
546 			bw_tbl_1 = 99;
547 		} else if (bw_tbl_1 == 0) {
548 			bw_tbl_1 = 1;
549 			bw_tbl_0 = 99;
550 		}
551 
552 		bnx2x_ets_bw_limit(&bp->link_params, bw_tbl_0, bw_tbl_1);
553 	} else {
554 		if (ets->cos_params[0].strict == BNX2X_DCBX_STRICT_COS_HIGHEST)
555 			rc = bnx2x_ets_strict(&bp->link_params, 0);
556 		else if (ets->cos_params[1].strict
557 					== BNX2X_DCBX_STRICT_COS_HIGHEST)
558 			rc = bnx2x_ets_strict(&bp->link_params, 1);
559 		if (rc)
560 			BNX2X_ERR("update_ets_params failed\n");
561 	}
562 }
563 
564 /*
565  * In E3B0 the configuration may have more than 2 COS.
566  */
bnx2x_dcbx_update_ets_config(struct bnx2x * bp)567 static void bnx2x_dcbx_update_ets_config(struct bnx2x *bp)
568 {
569 	struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
570 	struct bnx2x_ets_params ets_params = { 0 };
571 	u8 i;
572 
573 	ets_params.num_of_cos = ets->num_of_cos;
574 
575 	for (i = 0; i < ets->num_of_cos; i++) {
576 		/* COS is SP */
577 		if (ets->cos_params[i].strict != BNX2X_DCBX_STRICT_INVALID) {
578 			if (ets->cos_params[i].bw_tbl != DCBX_INVALID_COS_BW) {
579 				BNX2X_ERR("COS can't be not BW and not SP\n");
580 				return;
581 			}
582 
583 			ets_params.cos[i].state = bnx2x_cos_state_strict;
584 			ets_params.cos[i].params.sp_params.pri =
585 						ets->cos_params[i].strict;
586 		} else { /* COS is BW */
587 			if (ets->cos_params[i].bw_tbl == DCBX_INVALID_COS_BW) {
588 				BNX2X_ERR("COS can't be not BW and not SP\n");
589 				return;
590 			}
591 			ets_params.cos[i].state = bnx2x_cos_state_bw;
592 			ets_params.cos[i].params.bw_params.bw =
593 						(u8)ets->cos_params[i].bw_tbl;
594 		}
595 	}
596 
597 	/* Configure the ETS in HW */
598 	if (bnx2x_ets_e3b0_config(&bp->link_params, &bp->link_vars,
599 				  &ets_params)) {
600 		BNX2X_ERR("bnx2x_ets_e3b0_config failed\n");
601 		bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
602 	}
603 }
604 
bnx2x_dcbx_update_ets_params(struct bnx2x * bp)605 static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp)
606 {
607 	int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
608 			     GET_FLAGS(SHMEM2_RD(bp, drv_flags),
609 				       1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
610 
611 	bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
612 
613 	if (!bp->dcbx_port_params.ets.enabled ||
614 	    ((bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) && !mfw_configured))
615 		return;
616 
617 	if (CHIP_IS_E3B0(bp))
618 		bnx2x_dcbx_update_ets_config(bp);
619 	else
620 		bnx2x_dcbx_2cos_limit_update_ets_config(bp);
621 }
622 
623 #ifdef BCM_DCBNL
bnx2x_dcbx_read_shmem_remote_mib(struct bnx2x * bp)624 static int bnx2x_dcbx_read_shmem_remote_mib(struct bnx2x *bp)
625 {
626 	struct lldp_remote_mib remote_mib = {0};
627 	u32 dcbx_remote_mib_offset = SHMEM2_RD(bp, dcbx_remote_mib_offset);
628 	int rc;
629 
630 	DP(BNX2X_MSG_DCB, "dcbx_remote_mib_offset 0x%x\n",
631 	   dcbx_remote_mib_offset);
632 
633 	if (SHMEM_DCBX_REMOTE_MIB_NONE == dcbx_remote_mib_offset) {
634 		BNX2X_ERR("FW doesn't support dcbx_remote_mib_offset\n");
635 		return -EINVAL;
636 	}
637 
638 	rc = bnx2x_dcbx_read_mib(bp, (u32 *)&remote_mib, dcbx_remote_mib_offset,
639 				 DCBX_READ_REMOTE_MIB);
640 
641 	if (rc) {
642 		BNX2X_ERR("Failed to read remote mib from FW\n");
643 		return rc;
644 	}
645 
646 	/* save features and flags */
647 	bp->dcbx_remote_feat = remote_mib.features;
648 	bp->dcbx_remote_flags = remote_mib.flags;
649 	return 0;
650 }
651 #endif
652 
bnx2x_dcbx_read_shmem_neg_results(struct bnx2x * bp)653 static int bnx2x_dcbx_read_shmem_neg_results(struct bnx2x *bp)
654 {
655 	struct lldp_local_mib local_mib = {0};
656 	u32 dcbx_neg_res_offset = SHMEM2_RD(bp, dcbx_neg_res_offset);
657 	int rc;
658 
659 	DP(BNX2X_MSG_DCB, "dcbx_neg_res_offset 0x%x\n", dcbx_neg_res_offset);
660 
661 	if (SHMEM_DCBX_NEG_RES_NONE == dcbx_neg_res_offset) {
662 		BNX2X_ERR("FW doesn't support dcbx_neg_res_offset\n");
663 		return -EINVAL;
664 	}
665 
666 	rc = bnx2x_dcbx_read_mib(bp, (u32 *)&local_mib, dcbx_neg_res_offset,
667 				 DCBX_READ_LOCAL_MIB);
668 
669 	if (rc) {
670 		BNX2X_ERR("Failed to read local mib from FW\n");
671 		return rc;
672 	}
673 
674 	/* save features and error */
675 	bp->dcbx_local_feat = local_mib.features;
676 	bp->dcbx_error = local_mib.error;
677 	return 0;
678 }
679 
680 #ifdef BCM_DCBNL
681 static inline
bnx2x_dcbx_dcbnl_app_up(struct dcbx_app_priority_entry * ent)682 u8 bnx2x_dcbx_dcbnl_app_up(struct dcbx_app_priority_entry *ent)
683 {
684 	u8 pri;
685 
686 	/* Choose the highest priority */
687 	for (pri = MAX_PFC_PRIORITIES - 1; pri > 0; pri--)
688 		if (ent->pri_bitmap & (1 << pri))
689 			break;
690 	return pri;
691 }
692 
693 static inline
bnx2x_dcbx_dcbnl_app_idtype(struct dcbx_app_priority_entry * ent)694 u8 bnx2x_dcbx_dcbnl_app_idtype(struct dcbx_app_priority_entry *ent)
695 {
696 	return ((ent->appBitfield & DCBX_APP_ENTRY_SF_MASK) ==
697 		DCBX_APP_SF_PORT) ? DCB_APP_IDTYPE_PORTNUM :
698 		DCB_APP_IDTYPE_ETHTYPE;
699 }
700 
bnx2x_dcbnl_update_applist(struct bnx2x * bp,bool delall)701 int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall)
702 {
703 	int i, err = 0;
704 
705 	for (i = 0; i < DCBX_MAX_APP_PROTOCOL && err == 0; i++) {
706 		struct dcbx_app_priority_entry *ent =
707 			&bp->dcbx_local_feat.app.app_pri_tbl[i];
708 
709 		if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
710 			u8 up = bnx2x_dcbx_dcbnl_app_up(ent);
711 
712 			/* avoid invalid user-priority */
713 			if (up) {
714 				struct dcb_app app;
715 				app.selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
716 				app.protocol = ent->app_id;
717 				app.priority = delall ? 0 : up;
718 				err = dcb_setapp(bp->dev, &app);
719 			}
720 		}
721 	}
722 	return err;
723 }
724 #endif
725 
bnx2x_dcbx_update_tc_mapping(struct bnx2x * bp)726 static inline void bnx2x_dcbx_update_tc_mapping(struct bnx2x *bp)
727 {
728 	u8 prio, cos;
729 	for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++) {
730 		for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
731 			if (bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask
732 			    & (1 << prio)) {
733 				bp->prio_to_cos[prio] = cos;
734 				DP(BNX2X_MSG_DCB,
735 				   "tx_mapping %d --> %d\n", prio, cos);
736 			}
737 		}
738 	}
739 
740 	/* setup tc must be called under rtnl lock, but we can't take it here
741 	 * as we are handling an attention on a work queue which must be
742 	 * flushed at some rtnl-locked contexts (e.g. if down)
743 	 */
744 	bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_SETUP_TC, 0);
745 }
746 
bnx2x_dcbx_set_params(struct bnx2x * bp,u32 state)747 void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state)
748 {
749 	switch (state) {
750 	case BNX2X_DCBX_STATE_NEG_RECEIVED:
751 		{
752 			DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_NEG_RECEIVED\n");
753 #ifdef BCM_DCBNL
754 			/**
755 			 * Delete app tlvs from dcbnl before reading new
756 			 * negotiation results
757 			 */
758 			bnx2x_dcbnl_update_applist(bp, true);
759 
760 			/* Read remote mib if dcbx is in the FW */
761 			if (bnx2x_dcbx_read_shmem_remote_mib(bp))
762 				return;
763 #endif
764 			/* Read neg results if dcbx is in the FW */
765 			if (bnx2x_dcbx_read_shmem_neg_results(bp))
766 				return;
767 
768 			bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
769 						  bp->dcbx_error);
770 
771 			bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
772 						 bp->dcbx_error);
773 
774 			/* mark DCBX result for PMF migration */
775 			bnx2x_update_drv_flags(bp,
776 					       1 << DRV_FLAGS_DCB_CONFIGURED,
777 					       1);
778 #ifdef BCM_DCBNL
779 			/*
780 			 * Add new app tlvs to dcbnl
781 			 */
782 			bnx2x_dcbnl_update_applist(bp, false);
783 #endif
784 			/*
785 			 * reconfigure the netdevice with the results of the new
786 			 * dcbx negotiation.
787 			 */
788 			bnx2x_dcbx_update_tc_mapping(bp);
789 
790 			/*
791 			 * allow other functions to update their netdevices
792 			 * accordingly
793 			 */
794 			if (IS_MF(bp))
795 				bnx2x_link_sync_notify(bp);
796 
797 			bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_TX_STOP, 0);
798 			return;
799 		}
800 	case BNX2X_DCBX_STATE_TX_PAUSED:
801 		DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_TX_PAUSED\n");
802 		bnx2x_pfc_set_pfc(bp);
803 
804 		bnx2x_dcbx_update_ets_params(bp);
805 
806 		/* ets may affect cmng configuration: reinit it in hw */
807 		bnx2x_set_local_cmng(bp);
808 		return;
809 	case BNX2X_DCBX_STATE_TX_RELEASED:
810 		DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_TX_RELEASED\n");
811 		bnx2x_fw_command(bp, DRV_MSG_CODE_DCBX_PMF_DRV_OK, 0);
812 #ifdef BCM_DCBNL
813 		/*
814 		 * Send a notification for the new negotiated parameters
815 		 */
816 		dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
817 #endif
818 		return;
819 	default:
820 		BNX2X_ERR("Unknown DCBX_STATE\n");
821 	}
822 }
823 
824 #define LLDP_ADMIN_MIB_OFFSET(bp)	(PORT_MAX*sizeof(struct lldp_params) + \
825 				      BP_PORT(bp)*sizeof(struct lldp_admin_mib))
826 
bnx2x_dcbx_admin_mib_updated_params(struct bnx2x * bp,u32 dcbx_lldp_params_offset)827 static void bnx2x_dcbx_admin_mib_updated_params(struct bnx2x *bp,
828 				u32 dcbx_lldp_params_offset)
829 {
830 	struct lldp_admin_mib admin_mib;
831 	u32 i, other_traf_type = PREDEFINED_APP_IDX_MAX, traf_type = 0;
832 	u32 offset = dcbx_lldp_params_offset + LLDP_ADMIN_MIB_OFFSET(bp);
833 
834 	/*shortcuts*/
835 	struct dcbx_features *af = &admin_mib.features;
836 	struct bnx2x_config_dcbx_params *dp = &bp->dcbx_config_params;
837 
838 	memset(&admin_mib, 0, sizeof(struct lldp_admin_mib));
839 
840 	/* Read the data first */
841 	bnx2x_read_data(bp, (u32 *)&admin_mib, offset,
842 			sizeof(struct lldp_admin_mib));
843 
844 	if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON)
845 		SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
846 	else
847 		RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
848 
849 	if (dp->overwrite_settings == BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE) {
850 
851 		RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_CEE_VERSION_MASK);
852 		admin_mib.ver_cfg_flags |=
853 			(dp->admin_dcbx_version << DCBX_CEE_VERSION_SHIFT) &
854 			 DCBX_CEE_VERSION_MASK;
855 
856 		af->ets.enabled = (u8)dp->admin_ets_enable;
857 
858 		af->pfc.enabled = (u8)dp->admin_pfc_enable;
859 
860 		/* FOR IEEE dp->admin_tc_supported_tx_enable */
861 		if (dp->admin_ets_configuration_tx_enable)
862 			SET_FLAGS(admin_mib.ver_cfg_flags,
863 				  DCBX_ETS_CONFIG_TX_ENABLED);
864 		else
865 			RESET_FLAGS(admin_mib.ver_cfg_flags,
866 				    DCBX_ETS_CONFIG_TX_ENABLED);
867 		/* For IEEE admin_ets_recommendation_tx_enable */
868 		if (dp->admin_pfc_tx_enable)
869 			SET_FLAGS(admin_mib.ver_cfg_flags,
870 				  DCBX_PFC_CONFIG_TX_ENABLED);
871 		else
872 			RESET_FLAGS(admin_mib.ver_cfg_flags,
873 				  DCBX_PFC_CONFIG_TX_ENABLED);
874 
875 		if (dp->admin_application_priority_tx_enable)
876 			SET_FLAGS(admin_mib.ver_cfg_flags,
877 				  DCBX_APP_CONFIG_TX_ENABLED);
878 		else
879 			RESET_FLAGS(admin_mib.ver_cfg_flags,
880 				  DCBX_APP_CONFIG_TX_ENABLED);
881 
882 		if (dp->admin_ets_willing)
883 			SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
884 		else
885 			RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
886 		/* For IEEE admin_ets_reco_valid */
887 		if (dp->admin_pfc_willing)
888 			SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
889 		else
890 			RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
891 
892 		if (dp->admin_app_priority_willing)
893 			SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
894 		else
895 			RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
896 
897 		for (i = 0 ; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++) {
898 			DCBX_PG_BW_SET(af->ets.pg_bw_tbl, i,
899 				(u8)dp->admin_configuration_bw_precentage[i]);
900 
901 			DP(BNX2X_MSG_DCB, "pg_bw_tbl[%d] = %02x\n",
902 			   i, DCBX_PG_BW_GET(af->ets.pg_bw_tbl, i));
903 		}
904 
905 		for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
906 			DCBX_PRI_PG_SET(af->ets.pri_pg_tbl, i,
907 					(u8)dp->admin_configuration_ets_pg[i]);
908 
909 			DP(BNX2X_MSG_DCB, "pri_pg_tbl[%d] = %02x\n",
910 			   i, DCBX_PRI_PG_GET(af->ets.pri_pg_tbl, i));
911 		}
912 
913 		/*For IEEE admin_recommendation_bw_percentage
914 		 *For IEEE admin_recommendation_ets_pg */
915 		af->pfc.pri_en_bitmap = (u8)dp->admin_pfc_bitmap;
916 		for (i = 0; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) {
917 			if (dp->admin_priority_app_table[i].valid) {
918 				struct bnx2x_admin_priority_app_table *table =
919 					dp->admin_priority_app_table;
920 				if ((ETH_TYPE_FCOE == table[i].app_id) &&
921 				   (TRAFFIC_TYPE_ETH == table[i].traffic_type))
922 					traf_type = FCOE_APP_IDX;
923 				else if ((TCP_PORT_ISCSI == table[i].app_id) &&
924 				   (TRAFFIC_TYPE_PORT == table[i].traffic_type))
925 					traf_type = ISCSI_APP_IDX;
926 				else
927 					traf_type = other_traf_type++;
928 
929 				af->app.app_pri_tbl[traf_type].app_id =
930 					table[i].app_id;
931 
932 				af->app.app_pri_tbl[traf_type].pri_bitmap =
933 					(u8)(1 << table[i].priority);
934 
935 				af->app.app_pri_tbl[traf_type].appBitfield =
936 				    (DCBX_APP_ENTRY_VALID);
937 
938 				af->app.app_pri_tbl[traf_type].appBitfield |=
939 				   (TRAFFIC_TYPE_ETH == table[i].traffic_type) ?
940 					DCBX_APP_SF_ETH_TYPE : DCBX_APP_SF_PORT;
941 			}
942 		}
943 
944 		af->app.default_pri = (u8)dp->admin_default_priority;
945 	}
946 
947 	/* Write the data. */
948 	bnx2x_write_data(bp, (u32 *)&admin_mib, offset,
949 			 sizeof(struct lldp_admin_mib));
950 }
951 
bnx2x_dcbx_set_state(struct bnx2x * bp,bool dcb_on,u32 dcbx_enabled)952 void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled)
953 {
954 	if (!CHIP_IS_E1x(bp)) {
955 		bp->dcb_state = dcb_on;
956 		bp->dcbx_enabled = dcbx_enabled;
957 	} else {
958 		bp->dcb_state = false;
959 		bp->dcbx_enabled = BNX2X_DCBX_ENABLED_INVALID;
960 	}
961 	DP(BNX2X_MSG_DCB, "DCB state [%s:%s]\n",
962 	   dcb_on ? "ON" : "OFF",
963 	   dcbx_enabled == BNX2X_DCBX_ENABLED_OFF ? "user-mode" :
964 	   dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF ? "on-chip static" :
965 	   dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON ?
966 	   "on-chip with negotiation" : "invalid");
967 }
968 
bnx2x_dcbx_init_params(struct bnx2x * bp)969 void bnx2x_dcbx_init_params(struct bnx2x *bp)
970 {
971 	bp->dcbx_config_params.admin_dcbx_version = 0x0; /* 0 - CEE; 1 - IEEE */
972 	bp->dcbx_config_params.admin_ets_willing = 1;
973 	bp->dcbx_config_params.admin_pfc_willing = 1;
974 	bp->dcbx_config_params.overwrite_settings = 1;
975 	bp->dcbx_config_params.admin_ets_enable = 1;
976 	bp->dcbx_config_params.admin_pfc_enable = 1;
977 	bp->dcbx_config_params.admin_tc_supported_tx_enable = 1;
978 	bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
979 	bp->dcbx_config_params.admin_pfc_tx_enable = 1;
980 	bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
981 	bp->dcbx_config_params.admin_ets_reco_valid = 1;
982 	bp->dcbx_config_params.admin_app_priority_willing = 1;
983 	bp->dcbx_config_params.admin_configuration_bw_precentage[0] = 100;
984 	bp->dcbx_config_params.admin_configuration_bw_precentage[1] = 0;
985 	bp->dcbx_config_params.admin_configuration_bw_precentage[2] = 0;
986 	bp->dcbx_config_params.admin_configuration_bw_precentage[3] = 0;
987 	bp->dcbx_config_params.admin_configuration_bw_precentage[4] = 0;
988 	bp->dcbx_config_params.admin_configuration_bw_precentage[5] = 0;
989 	bp->dcbx_config_params.admin_configuration_bw_precentage[6] = 0;
990 	bp->dcbx_config_params.admin_configuration_bw_precentage[7] = 0;
991 	bp->dcbx_config_params.admin_configuration_ets_pg[0] = 0;
992 	bp->dcbx_config_params.admin_configuration_ets_pg[1] = 0;
993 	bp->dcbx_config_params.admin_configuration_ets_pg[2] = 0;
994 	bp->dcbx_config_params.admin_configuration_ets_pg[3] = 0;
995 	bp->dcbx_config_params.admin_configuration_ets_pg[4] = 0;
996 	bp->dcbx_config_params.admin_configuration_ets_pg[5] = 0;
997 	bp->dcbx_config_params.admin_configuration_ets_pg[6] = 0;
998 	bp->dcbx_config_params.admin_configuration_ets_pg[7] = 0;
999 	bp->dcbx_config_params.admin_recommendation_bw_precentage[0] = 100;
1000 	bp->dcbx_config_params.admin_recommendation_bw_precentage[1] = 0;
1001 	bp->dcbx_config_params.admin_recommendation_bw_precentage[2] = 0;
1002 	bp->dcbx_config_params.admin_recommendation_bw_precentage[3] = 0;
1003 	bp->dcbx_config_params.admin_recommendation_bw_precentage[4] = 0;
1004 	bp->dcbx_config_params.admin_recommendation_bw_precentage[5] = 0;
1005 	bp->dcbx_config_params.admin_recommendation_bw_precentage[6] = 0;
1006 	bp->dcbx_config_params.admin_recommendation_bw_precentage[7] = 0;
1007 	bp->dcbx_config_params.admin_recommendation_ets_pg[0] = 0;
1008 	bp->dcbx_config_params.admin_recommendation_ets_pg[1] = 1;
1009 	bp->dcbx_config_params.admin_recommendation_ets_pg[2] = 2;
1010 	bp->dcbx_config_params.admin_recommendation_ets_pg[3] = 3;
1011 	bp->dcbx_config_params.admin_recommendation_ets_pg[4] = 4;
1012 	bp->dcbx_config_params.admin_recommendation_ets_pg[5] = 5;
1013 	bp->dcbx_config_params.admin_recommendation_ets_pg[6] = 6;
1014 	bp->dcbx_config_params.admin_recommendation_ets_pg[7] = 7;
1015 	bp->dcbx_config_params.admin_pfc_bitmap = 0x0;
1016 	bp->dcbx_config_params.admin_priority_app_table[0].valid = 0;
1017 	bp->dcbx_config_params.admin_priority_app_table[1].valid = 0;
1018 	bp->dcbx_config_params.admin_priority_app_table[2].valid = 0;
1019 	bp->dcbx_config_params.admin_priority_app_table[3].valid = 0;
1020 	bp->dcbx_config_params.admin_default_priority = 0;
1021 }
1022 
bnx2x_dcbx_init(struct bnx2x * bp,bool update_shmem)1023 void bnx2x_dcbx_init(struct bnx2x *bp, bool update_shmem)
1024 {
1025 	u32 dcbx_lldp_params_offset = SHMEM_LLDP_DCBX_PARAMS_NONE;
1026 
1027 	/* only PMF can send ADMIN msg to MFW in old MFW versions */
1028 	if ((!bp->port.pmf) && (!(bp->flags & BC_SUPPORTS_DCBX_MSG_NON_PMF)))
1029 		return;
1030 
1031 	if (bp->dcbx_enabled <= 0)
1032 		return;
1033 
1034 	/* validate:
1035 	 * chip of good for dcbx version,
1036 	 * dcb is wanted
1037 	 * shmem2 contains DCBX support fields
1038 	 */
1039 	DP(BNX2X_MSG_DCB, "dcb_state %d bp->port.pmf %d\n",
1040 	   bp->dcb_state, bp->port.pmf);
1041 
1042 	if (bp->dcb_state == BNX2X_DCB_STATE_ON &&
1043 	    SHMEM2_HAS(bp, dcbx_lldp_params_offset)) {
1044 		dcbx_lldp_params_offset =
1045 			SHMEM2_RD(bp, dcbx_lldp_params_offset);
1046 
1047 		DP(BNX2X_MSG_DCB, "dcbx_lldp_params_offset 0x%x\n",
1048 		   dcbx_lldp_params_offset);
1049 
1050 		bnx2x_update_drv_flags(bp, 1 << DRV_FLAGS_DCB_CONFIGURED, 0);
1051 
1052 		if (SHMEM_LLDP_DCBX_PARAMS_NONE != dcbx_lldp_params_offset) {
1053 			/* need HW lock to avoid scenario of two drivers
1054 			 * writing in parallel to shmem
1055 			 */
1056 			bnx2x_acquire_hw_lock(bp,
1057 					      HW_LOCK_RESOURCE_DCBX_ADMIN_MIB);
1058 			if (update_shmem)
1059 				bnx2x_dcbx_admin_mib_updated_params(bp,
1060 					dcbx_lldp_params_offset);
1061 
1062 			/* Let HW start negotiation */
1063 			bnx2x_fw_command(bp,
1064 					 DRV_MSG_CODE_DCBX_ADMIN_PMF_MSG, 0);
1065 			/* release HW lock only after MFW acks that it finished
1066 			 * reading values from shmem
1067 			 */
1068 			bnx2x_release_hw_lock(bp,
1069 					      HW_LOCK_RESOURCE_DCBX_ADMIN_MIB);
1070 		}
1071 	}
1072 }
1073 static void
bnx2x_dcbx_print_cos_params(struct bnx2x * bp,struct bnx2x_func_tx_start_params * pfc_fw_cfg)1074 bnx2x_dcbx_print_cos_params(struct bnx2x *bp,
1075 			    struct bnx2x_func_tx_start_params *pfc_fw_cfg)
1076 {
1077 	u8 pri = 0;
1078 	u8 cos = 0;
1079 
1080 	DP(BNX2X_MSG_DCB,
1081 	   "pfc_fw_cfg->dcb_version %x\n", pfc_fw_cfg->dcb_version);
1082 	DP(BNX2X_MSG_DCB,
1083 	   "pdev->params.dcbx_port_params.pfc.priority_non_pauseable_mask %x\n",
1084 	   bp->dcbx_port_params.pfc.priority_non_pauseable_mask);
1085 
1086 	for (cos = 0 ; cos < bp->dcbx_port_params.ets.num_of_cos ; cos++) {
1087 		DP(BNX2X_MSG_DCB,
1088 		   "pdev->params.dcbx_port_params.ets.cos_params[%d].pri_bitmask %x\n",
1089 		   cos, bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask);
1090 
1091 		DP(BNX2X_MSG_DCB,
1092 		   "pdev->params.dcbx_port_params.ets.cos_params[%d].bw_tbl %x\n",
1093 		   cos, bp->dcbx_port_params.ets.cos_params[cos].bw_tbl);
1094 
1095 		DP(BNX2X_MSG_DCB,
1096 		   "pdev->params.dcbx_port_params.ets.cos_params[%d].strict %x\n",
1097 		   cos, bp->dcbx_port_params.ets.cos_params[cos].strict);
1098 
1099 		DP(BNX2X_MSG_DCB,
1100 		   "pdev->params.dcbx_port_params.ets.cos_params[%d].pauseable %x\n",
1101 		   cos, bp->dcbx_port_params.ets.cos_params[cos].pauseable);
1102 	}
1103 
1104 	for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
1105 		DP(BNX2X_MSG_DCB,
1106 		   "pfc_fw_cfg->traffic_type_to_priority_cos[%d].priority %x\n",
1107 		   pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].priority);
1108 
1109 		DP(BNX2X_MSG_DCB,
1110 		   "pfc_fw_cfg->traffic_type_to_priority_cos[%d].cos %x\n",
1111 		   pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].cos);
1112 	}
1113 }
1114 
1115 /* fills help_data according to pg_info */
bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x * bp,u32 * pg_pri_orginal_spread,struct pg_help_data * help_data)1116 static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp,
1117 					    u32 *pg_pri_orginal_spread,
1118 					    struct pg_help_data *help_data)
1119 {
1120 	bool pg_found  = false;
1121 	u32 i, traf_type, add_traf_type, add_pg;
1122 	u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1123 	struct pg_entry_help_data *data = help_data->data; /*shortcut*/
1124 
1125 	/* Set to invalid */
1126 	for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
1127 		data[i].pg = DCBX_ILLEGAL_PG;
1128 
1129 	for (add_traf_type = 0;
1130 	     add_traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX; add_traf_type++) {
1131 		pg_found = false;
1132 		if (ttp[add_traf_type] < MAX_PFC_PRIORITIES) {
1133 			add_pg = (u8)pg_pri_orginal_spread[ttp[add_traf_type]];
1134 			for (traf_type = 0;
1135 			     traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1136 			     traf_type++) {
1137 				if (data[traf_type].pg == add_pg) {
1138 					if (!(data[traf_type].pg_priority &
1139 					     (1 << ttp[add_traf_type])))
1140 						data[traf_type].
1141 							num_of_dif_pri++;
1142 					data[traf_type].pg_priority |=
1143 						(1 << ttp[add_traf_type]);
1144 					pg_found = true;
1145 					break;
1146 				}
1147 			}
1148 			if (!pg_found) {
1149 				data[help_data->num_of_pg].pg = add_pg;
1150 				data[help_data->num_of_pg].pg_priority =
1151 						(1 << ttp[add_traf_type]);
1152 				data[help_data->num_of_pg].num_of_dif_pri = 1;
1153 				help_data->num_of_pg++;
1154 			}
1155 		}
1156 		DP(BNX2X_MSG_DCB,
1157 		   "add_traf_type %d pg_found %s num_of_pg %d\n",
1158 		   add_traf_type, !pg_found ? "NO" : "YES",
1159 		   help_data->num_of_pg);
1160 	}
1161 }
1162 
bnx2x_dcbx_ets_disabled_entry_data(struct bnx2x * bp,struct cos_help_data * cos_data,u32 pri_join_mask)1163 static void bnx2x_dcbx_ets_disabled_entry_data(struct bnx2x *bp,
1164 					       struct cos_help_data *cos_data,
1165 					       u32 pri_join_mask)
1166 {
1167 	/* Only one priority than only one COS */
1168 	cos_data->data[0].pausable =
1169 		IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1170 	cos_data->data[0].pri_join_mask = pri_join_mask;
1171 	cos_data->data[0].cos_bw = 100;
1172 	cos_data->num_of_cos = 1;
1173 }
1174 
bnx2x_dcbx_add_to_cos_bw(struct bnx2x * bp,struct cos_entry_help_data * data,u8 pg_bw)1175 static inline void bnx2x_dcbx_add_to_cos_bw(struct bnx2x *bp,
1176 					    struct cos_entry_help_data *data,
1177 					    u8 pg_bw)
1178 {
1179 	if (data->cos_bw == DCBX_INVALID_COS_BW)
1180 		data->cos_bw = pg_bw;
1181 	else
1182 		data->cos_bw += pg_bw;
1183 }
1184 
bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x * bp,struct cos_help_data * cos_data,u32 * pg_pri_orginal_spread,struct dcbx_ets_feature * ets)1185 static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp,
1186 			struct cos_help_data *cos_data,
1187 			u32 *pg_pri_orginal_spread,
1188 			struct dcbx_ets_feature *ets)
1189 {
1190 	u32	pri_tested	= 0;
1191 	u8	i		= 0;
1192 	u8	entry		= 0;
1193 	u8	pg_entry	= 0;
1194 	u8	num_of_pri	= LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1195 
1196 	cos_data->data[0].pausable = true;
1197 	cos_data->data[1].pausable = false;
1198 	cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
1199 
1200 	for (i = 0 ; i < num_of_pri ; i++) {
1201 		pri_tested = 1 << bp->dcbx_port_params.
1202 					app.traffic_type_priority[i];
1203 
1204 		if (pri_tested & DCBX_PFC_PRI_NON_PAUSE_MASK(bp)) {
1205 			cos_data->data[1].pri_join_mask |= pri_tested;
1206 			entry = 1;
1207 		} else {
1208 			cos_data->data[0].pri_join_mask |= pri_tested;
1209 			entry = 0;
1210 		}
1211 		pg_entry = (u8)pg_pri_orginal_spread[bp->dcbx_port_params.
1212 						app.traffic_type_priority[i]];
1213 		/* There can be only one strict pg */
1214 		if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES)
1215 			bnx2x_dcbx_add_to_cos_bw(bp, &cos_data->data[entry],
1216 				DCBX_PG_BW_GET(ets->pg_bw_tbl, pg_entry));
1217 		else
1218 			/* If we join a group and one is strict
1219 			 * than the bw rules
1220 			 */
1221 			cos_data->data[entry].strict =
1222 						BNX2X_DCBX_STRICT_COS_HIGHEST;
1223 	}
1224 	if ((0 == cos_data->data[0].pri_join_mask) &&
1225 	    (0 == cos_data->data[1].pri_join_mask))
1226 		BNX2X_ERR("dcbx error: Both groups must have priorities\n");
1227 }
1228 
1229 #ifndef POWER_OF_2
1230 #define POWER_OF_2(x)	((0 != x) && (0 == (x & (x-1))))
1231 #endif
1232 
bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(struct bnx2x * bp,struct pg_help_data * pg_help_data,struct cos_help_data * cos_data,u32 pri_join_mask,u8 num_of_dif_pri)1233 static void bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(struct bnx2x *bp,
1234 					      struct pg_help_data *pg_help_data,
1235 					      struct cos_help_data *cos_data,
1236 					      u32 pri_join_mask,
1237 					      u8 num_of_dif_pri)
1238 {
1239 	u8 i = 0;
1240 	u32 pri_tested = 0;
1241 	u32 pri_mask_without_pri = 0;
1242 	u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1243 	/*debug*/
1244 	if (num_of_dif_pri == 1) {
1245 		bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data, pri_join_mask);
1246 		return;
1247 	}
1248 	/* single priority group */
1249 	if (pg_help_data->data[0].pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1250 		/* If there are both pauseable and non-pauseable priorities,
1251 		 * the pauseable priorities go to the first queue and
1252 		 * the non-pauseable priorities go to the second queue.
1253 		 */
1254 		if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1255 			/* Pauseable */
1256 			cos_data->data[0].pausable = true;
1257 			/* Non pauseable.*/
1258 			cos_data->data[1].pausable = false;
1259 
1260 			if (2 == num_of_dif_pri) {
1261 				cos_data->data[0].cos_bw = 50;
1262 				cos_data->data[1].cos_bw = 50;
1263 			}
1264 
1265 			if (3 == num_of_dif_pri) {
1266 				if (POWER_OF_2(DCBX_PFC_PRI_GET_PAUSE(bp,
1267 							pri_join_mask))) {
1268 					cos_data->data[0].cos_bw = 33;
1269 					cos_data->data[1].cos_bw = 67;
1270 				} else {
1271 					cos_data->data[0].cos_bw = 67;
1272 					cos_data->data[1].cos_bw = 33;
1273 				}
1274 			}
1275 
1276 		} else if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask)) {
1277 			/* If there are only pauseable priorities,
1278 			 * then one/two priorities go to the first queue
1279 			 * and one priority goes to the second queue.
1280 			 */
1281 			if (2 == num_of_dif_pri) {
1282 				cos_data->data[0].cos_bw = 50;
1283 				cos_data->data[1].cos_bw = 50;
1284 			} else {
1285 				cos_data->data[0].cos_bw = 67;
1286 				cos_data->data[1].cos_bw = 33;
1287 			}
1288 			cos_data->data[1].pausable = true;
1289 			cos_data->data[0].pausable = true;
1290 			/* All priorities except FCOE */
1291 			cos_data->data[0].pri_join_mask = (pri_join_mask &
1292 				((u8)~(1 << ttp[LLFC_TRAFFIC_TYPE_FCOE])));
1293 			/* Only FCOE priority.*/
1294 			cos_data->data[1].pri_join_mask =
1295 				(1 << ttp[LLFC_TRAFFIC_TYPE_FCOE]);
1296 		} else
1297 			/* If there are only non-pauseable priorities,
1298 			 * they will all go to the same queue.
1299 			 */
1300 			bnx2x_dcbx_ets_disabled_entry_data(bp,
1301 						cos_data, pri_join_mask);
1302 	} else {
1303 		/* priority group which is not BW limited (PG#15):*/
1304 		if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1305 			/* If there are both pauseable and non-pauseable
1306 			 * priorities, the pauseable priorities go to the first
1307 			 * queue and the non-pauseable priorities
1308 			 * go to the second queue.
1309 			 */
1310 			if (DCBX_PFC_PRI_GET_PAUSE(bp, pri_join_mask) >
1311 			    DCBX_PFC_PRI_GET_NON_PAUSE(bp, pri_join_mask)) {
1312 				cos_data->data[0].strict =
1313 					BNX2X_DCBX_STRICT_COS_HIGHEST;
1314 				cos_data->data[1].strict =
1315 					BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1316 						BNX2X_DCBX_STRICT_COS_HIGHEST);
1317 			} else {
1318 				cos_data->data[0].strict =
1319 					BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1320 						BNX2X_DCBX_STRICT_COS_HIGHEST);
1321 				cos_data->data[1].strict =
1322 					BNX2X_DCBX_STRICT_COS_HIGHEST;
1323 			}
1324 			/* Pauseable */
1325 			cos_data->data[0].pausable = true;
1326 			/* Non pause-able.*/
1327 			cos_data->data[1].pausable = false;
1328 		} else {
1329 			/* If there are only pauseable priorities or
1330 			 * only non-pauseable,* the lower priorities go
1331 			 * to the first queue and the higher priorities go
1332 			 * to the second queue.
1333 			 */
1334 			cos_data->data[0].pausable =
1335 				cos_data->data[1].pausable =
1336 				IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1337 
1338 			for (i = 0 ; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++) {
1339 				pri_tested = 1 << bp->dcbx_port_params.
1340 					app.traffic_type_priority[i];
1341 				/* Remove priority tested */
1342 				pri_mask_without_pri =
1343 					(pri_join_mask & ((u8)(~pri_tested)));
1344 				if (pri_mask_without_pri < pri_tested)
1345 					break;
1346 			}
1347 
1348 			if (i == LLFC_DRIVER_TRAFFIC_TYPE_MAX)
1349 				BNX2X_ERR("Invalid value for pri_join_mask - could not find a priority\n");
1350 
1351 			cos_data->data[0].pri_join_mask = pri_mask_without_pri;
1352 			cos_data->data[1].pri_join_mask = pri_tested;
1353 			/* Both queues are strict priority,
1354 			 * and that with the highest priority
1355 			 * gets the highest strict priority in the arbiter.
1356 			 */
1357 			cos_data->data[0].strict =
1358 					BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1359 						BNX2X_DCBX_STRICT_COS_HIGHEST);
1360 			cos_data->data[1].strict =
1361 					BNX2X_DCBX_STRICT_COS_HIGHEST;
1362 		}
1363 	}
1364 }
1365 
bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(struct bnx2x * bp,struct pg_help_data * pg_help_data,struct dcbx_ets_feature * ets,struct cos_help_data * cos_data,u32 * pg_pri_orginal_spread,u32 pri_join_mask,u8 num_of_dif_pri)1366 static void bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
1367 			    struct bnx2x		*bp,
1368 			    struct  pg_help_data	*pg_help_data,
1369 			    struct dcbx_ets_feature	*ets,
1370 			    struct cos_help_data	*cos_data,
1371 			    u32			*pg_pri_orginal_spread,
1372 			    u32				pri_join_mask,
1373 			    u8				num_of_dif_pri)
1374 {
1375 	u8 i = 0;
1376 	u8 pg[DCBX_COS_MAX_NUM_E2] = { 0 };
1377 
1378 	/* If there are both pauseable and non-pauseable priorities,
1379 	 * the pauseable priorities go to the first queue and
1380 	 * the non-pauseable priorities go to the second queue.
1381 	 */
1382 	if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1383 		if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
1384 					 pg_help_data->data[0].pg_priority) ||
1385 		    IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
1386 					 pg_help_data->data[1].pg_priority)) {
1387 			/* If one PG contains both pauseable and
1388 			 * non-pauseable priorities then ETS is disabled.
1389 			 */
1390 			bnx2x_dcbx_separate_pauseable_from_non(bp, cos_data,
1391 					pg_pri_orginal_spread, ets);
1392 			bp->dcbx_port_params.ets.enabled = false;
1393 			return;
1394 		}
1395 
1396 		/* Pauseable */
1397 		cos_data->data[0].pausable = true;
1398 		/* Non pauseable. */
1399 		cos_data->data[1].pausable = false;
1400 		if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp,
1401 				pg_help_data->data[0].pg_priority)) {
1402 			/* 0 is pauseable */
1403 			cos_data->data[0].pri_join_mask =
1404 				pg_help_data->data[0].pg_priority;
1405 			pg[0] = pg_help_data->data[0].pg;
1406 			cos_data->data[1].pri_join_mask =
1407 				pg_help_data->data[1].pg_priority;
1408 			pg[1] = pg_help_data->data[1].pg;
1409 		} else {/* 1 is pauseable */
1410 			cos_data->data[0].pri_join_mask =
1411 				pg_help_data->data[1].pg_priority;
1412 			pg[0] = pg_help_data->data[1].pg;
1413 			cos_data->data[1].pri_join_mask =
1414 				pg_help_data->data[0].pg_priority;
1415 			pg[1] = pg_help_data->data[0].pg;
1416 		}
1417 	} else {
1418 		/* If there are only pauseable priorities or
1419 		 * only non-pauseable, each PG goes to a queue.
1420 		 */
1421 		cos_data->data[0].pausable = cos_data->data[1].pausable =
1422 			IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1423 		cos_data->data[0].pri_join_mask =
1424 			pg_help_data->data[0].pg_priority;
1425 		pg[0] = pg_help_data->data[0].pg;
1426 		cos_data->data[1].pri_join_mask =
1427 			pg_help_data->data[1].pg_priority;
1428 		pg[1] = pg_help_data->data[1].pg;
1429 	}
1430 
1431 	/* There can be only one strict pg */
1432 	for (i = 0 ; i < ARRAY_SIZE(pg); i++) {
1433 		if (pg[i] < DCBX_MAX_NUM_PG_BW_ENTRIES)
1434 			cos_data->data[i].cos_bw =
1435 				DCBX_PG_BW_GET(ets->pg_bw_tbl, pg[i]);
1436 		else
1437 			cos_data->data[i].strict =
1438 						BNX2X_DCBX_STRICT_COS_HIGHEST;
1439 	}
1440 }
1441 
bnx2x_dcbx_join_pgs(struct bnx2x * bp,struct dcbx_ets_feature * ets,struct pg_help_data * pg_help_data,u8 required_num_of_pg)1442 static int bnx2x_dcbx_join_pgs(
1443 			      struct bnx2x            *bp,
1444 			      struct dcbx_ets_feature *ets,
1445 			      struct pg_help_data     *pg_help_data,
1446 			      u8                      required_num_of_pg)
1447 {
1448 	u8 entry_joined    = pg_help_data->num_of_pg - 1;
1449 	u8 entry_removed   = entry_joined + 1;
1450 	u8 pg_joined       = 0;
1451 
1452 	if (required_num_of_pg == 0 || ARRAY_SIZE(pg_help_data->data)
1453 						<= pg_help_data->num_of_pg) {
1454 
1455 		BNX2X_ERR("required_num_of_pg can't be zero\n");
1456 		return -EINVAL;
1457 	}
1458 
1459 	while (required_num_of_pg < pg_help_data->num_of_pg) {
1460 		entry_joined = pg_help_data->num_of_pg - 2;
1461 		entry_removed = entry_joined + 1;
1462 		/* protect index */
1463 		entry_removed %= ARRAY_SIZE(pg_help_data->data);
1464 
1465 		pg_help_data->data[entry_joined].pg_priority |=
1466 			pg_help_data->data[entry_removed].pg_priority;
1467 
1468 		pg_help_data->data[entry_joined].num_of_dif_pri +=
1469 			pg_help_data->data[entry_removed].num_of_dif_pri;
1470 
1471 		if (pg_help_data->data[entry_joined].pg == DCBX_STRICT_PRI_PG ||
1472 		    pg_help_data->data[entry_removed].pg == DCBX_STRICT_PRI_PG)
1473 			/* Entries joined strict priority rules */
1474 			pg_help_data->data[entry_joined].pg =
1475 							DCBX_STRICT_PRI_PG;
1476 		else {
1477 			/* Entries can be joined join BW */
1478 			pg_joined = DCBX_PG_BW_GET(ets->pg_bw_tbl,
1479 					pg_help_data->data[entry_joined].pg) +
1480 				    DCBX_PG_BW_GET(ets->pg_bw_tbl,
1481 					pg_help_data->data[entry_removed].pg);
1482 
1483 			DCBX_PG_BW_SET(ets->pg_bw_tbl,
1484 				pg_help_data->data[entry_joined].pg, pg_joined);
1485 		}
1486 		/* Joined the entries */
1487 		pg_help_data->num_of_pg--;
1488 	}
1489 
1490 	return 0;
1491 }
1492 
bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(struct bnx2x * bp,struct pg_help_data * pg_help_data,struct dcbx_ets_feature * ets,struct cos_help_data * cos_data,u32 * pg_pri_orginal_spread,u32 pri_join_mask,u8 num_of_dif_pri)1493 static void bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
1494 			      struct bnx2x		*bp,
1495 			      struct pg_help_data	*pg_help_data,
1496 			      struct dcbx_ets_feature	*ets,
1497 			      struct cos_help_data	*cos_data,
1498 			      u32			*pg_pri_orginal_spread,
1499 			      u32			pri_join_mask,
1500 			      u8			num_of_dif_pri)
1501 {
1502 	u8 i = 0;
1503 	u32 pri_tested = 0;
1504 	u8 entry = 0;
1505 	u8 pg_entry = 0;
1506 	bool b_found_strict = false;
1507 	u8 num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1508 
1509 	cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
1510 	/* If there are both pauseable and non-pauseable priorities,
1511 	 * the pauseable priorities go to the first queue and the
1512 	 * non-pauseable priorities go to the second queue.
1513 	 */
1514 	if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask))
1515 		bnx2x_dcbx_separate_pauseable_from_non(bp,
1516 				cos_data, pg_pri_orginal_spread, ets);
1517 	else {
1518 		/* If two BW-limited PG-s were combined to one queue,
1519 		 * the BW is their sum.
1520 		 *
1521 		 * If there are only pauseable priorities or only non-pauseable,
1522 		 * and there are both BW-limited and non-BW-limited PG-s,
1523 		 * the BW-limited PG/s go to one queue and the non-BW-limited
1524 		 * PG/s go to the second queue.
1525 		 *
1526 		 * If there are only pauseable priorities or only non-pauseable
1527 		 * and all are BW limited, then	two priorities go to the first
1528 		 * queue and one priority goes to the second queue.
1529 		 *
1530 		 * We will join this two cases:
1531 		 * if one is BW limited it will go to the second queue
1532 		 * otherwise the last priority will get it
1533 		 */
1534 
1535 		cos_data->data[0].pausable = cos_data->data[1].pausable =
1536 			IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1537 
1538 		for (i = 0 ; i < num_of_pri; i++) {
1539 			pri_tested = 1 << bp->dcbx_port_params.
1540 				app.traffic_type_priority[i];
1541 			pg_entry = (u8)pg_pri_orginal_spread[bp->
1542 				dcbx_port_params.app.traffic_type_priority[i]];
1543 
1544 			if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1545 				entry = 0;
1546 
1547 				if (i == (num_of_pri-1) && !b_found_strict)
1548 					/* last entry will be handled separately
1549 					 * If no priority is strict than last
1550 					 * entry goes to last queue.
1551 					 */
1552 					entry = 1;
1553 				cos_data->data[entry].pri_join_mask |=
1554 								pri_tested;
1555 				bnx2x_dcbx_add_to_cos_bw(bp,
1556 					&cos_data->data[entry],
1557 					DCBX_PG_BW_GET(ets->pg_bw_tbl,
1558 						       pg_entry));
1559 			} else {
1560 				b_found_strict = true;
1561 				cos_data->data[1].pri_join_mask |= pri_tested;
1562 				/* If we join a group and one is strict
1563 				 * than the bw rules
1564 				 */
1565 				cos_data->data[1].strict =
1566 					BNX2X_DCBX_STRICT_COS_HIGHEST;
1567 			}
1568 		}
1569 	}
1570 }
1571 
bnx2x_dcbx_2cos_limit_cee_fill_cos_params(struct bnx2x * bp,struct pg_help_data * help_data,struct dcbx_ets_feature * ets,struct cos_help_data * cos_data,u32 * pg_pri_orginal_spread,u32 pri_join_mask,u8 num_of_dif_pri)1572 static void bnx2x_dcbx_2cos_limit_cee_fill_cos_params(struct bnx2x *bp,
1573 				       struct pg_help_data *help_data,
1574 				       struct dcbx_ets_feature *ets,
1575 				       struct cos_help_data *cos_data,
1576 				       u32 *pg_pri_orginal_spread,
1577 				       u32 pri_join_mask,
1578 				       u8 num_of_dif_pri)
1579 {
1580 	/* default E2 settings */
1581 	cos_data->num_of_cos = DCBX_COS_MAX_NUM_E2;
1582 
1583 	switch (help_data->num_of_pg) {
1584 	case 1:
1585 		bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(
1586 					       bp,
1587 					       help_data,
1588 					       cos_data,
1589 					       pri_join_mask,
1590 					       num_of_dif_pri);
1591 		break;
1592 	case 2:
1593 		bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
1594 					    bp,
1595 					    help_data,
1596 					    ets,
1597 					    cos_data,
1598 					    pg_pri_orginal_spread,
1599 					    pri_join_mask,
1600 					    num_of_dif_pri);
1601 		break;
1602 
1603 	case 3:
1604 		bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
1605 					      bp,
1606 					      help_data,
1607 					      ets,
1608 					      cos_data,
1609 					      pg_pri_orginal_spread,
1610 					      pri_join_mask,
1611 					      num_of_dif_pri);
1612 		break;
1613 	default:
1614 		BNX2X_ERR("Wrong pg_help_data.num_of_pg\n");
1615 		bnx2x_dcbx_ets_disabled_entry_data(bp,
1616 						   cos_data, pri_join_mask);
1617 	}
1618 }
1619 
bnx2x_dcbx_spread_strict_pri(struct bnx2x * bp,struct cos_help_data * cos_data,u8 entry,u8 num_spread_of_entries,u8 strict_app_pris)1620 static int bnx2x_dcbx_spread_strict_pri(struct bnx2x *bp,
1621 					struct cos_help_data *cos_data,
1622 					u8 entry,
1623 					u8 num_spread_of_entries,
1624 					u8 strict_app_pris)
1625 {
1626 	u8 strict_pri = BNX2X_DCBX_STRICT_COS_HIGHEST;
1627 	u8 num_of_app_pri = MAX_PFC_PRIORITIES;
1628 	u8 app_pri_bit = 0;
1629 
1630 	while (num_spread_of_entries && num_of_app_pri > 0) {
1631 		app_pri_bit = 1 << (num_of_app_pri - 1);
1632 		if (app_pri_bit & strict_app_pris) {
1633 			struct cos_entry_help_data *data = &cos_data->
1634 								data[entry];
1635 			num_spread_of_entries--;
1636 			if (num_spread_of_entries == 0) {
1637 				/* last entry needed put all the entries left */
1638 				data->cos_bw = DCBX_INVALID_COS_BW;
1639 				data->strict = strict_pri;
1640 				data->pri_join_mask = strict_app_pris;
1641 				data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1642 							data->pri_join_mask);
1643 			} else {
1644 				strict_app_pris &= ~app_pri_bit;
1645 
1646 				data->cos_bw = DCBX_INVALID_COS_BW;
1647 				data->strict = strict_pri;
1648 				data->pri_join_mask = app_pri_bit;
1649 				data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1650 							data->pri_join_mask);
1651 			}
1652 
1653 			strict_pri =
1654 			    BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(strict_pri);
1655 			entry++;
1656 		}
1657 
1658 		num_of_app_pri--;
1659 	}
1660 
1661 	if (num_spread_of_entries) {
1662 		BNX2X_ERR("Didn't succeed to spread strict priorities\n");
1663 		return -EINVAL;
1664 	}
1665 
1666 	return 0;
1667 }
1668 
bnx2x_dcbx_cee_fill_strict_pri(struct bnx2x * bp,struct cos_help_data * cos_data,u8 entry,u8 num_spread_of_entries,u8 strict_app_pris)1669 static u8 bnx2x_dcbx_cee_fill_strict_pri(struct bnx2x *bp,
1670 					 struct cos_help_data *cos_data,
1671 					 u8 entry,
1672 					 u8 num_spread_of_entries,
1673 					 u8 strict_app_pris)
1674 {
1675 	if (bnx2x_dcbx_spread_strict_pri(bp, cos_data, entry,
1676 					 num_spread_of_entries,
1677 					 strict_app_pris)) {
1678 		struct cos_entry_help_data *data = &cos_data->
1679 						    data[entry];
1680 		/* Fill BW entry */
1681 		data->cos_bw = DCBX_INVALID_COS_BW;
1682 		data->strict = BNX2X_DCBX_STRICT_COS_HIGHEST;
1683 		data->pri_join_mask = strict_app_pris;
1684 		data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1685 				 data->pri_join_mask);
1686 		return 1;
1687 	}
1688 
1689 	return num_spread_of_entries;
1690 }
1691 
bnx2x_dcbx_cee_fill_cos_params(struct bnx2x * bp,struct pg_help_data * help_data,struct dcbx_ets_feature * ets,struct cos_help_data * cos_data,u32 pri_join_mask)1692 static void bnx2x_dcbx_cee_fill_cos_params(struct bnx2x *bp,
1693 					   struct pg_help_data *help_data,
1694 					   struct dcbx_ets_feature *ets,
1695 					   struct cos_help_data *cos_data,
1696 					   u32 pri_join_mask)
1697 
1698 {
1699 	u8 need_num_of_entries = 0;
1700 	u8 i = 0;
1701 	u8 entry = 0;
1702 
1703 	/*
1704 	 * if the number of requested PG-s in CEE is greater than 3
1705 	 * then the results are not determined since this is a violation
1706 	 * of the standard.
1707 	 */
1708 	if (help_data->num_of_pg > DCBX_COS_MAX_NUM_E3B0) {
1709 		if (bnx2x_dcbx_join_pgs(bp, ets, help_data,
1710 					DCBX_COS_MAX_NUM_E3B0)) {
1711 			BNX2X_ERR("Unable to reduce the number of PGs - we will disables ETS\n");
1712 			bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data,
1713 							   pri_join_mask);
1714 			return;
1715 		}
1716 	}
1717 
1718 	for (i = 0 ; i < help_data->num_of_pg; i++) {
1719 		struct pg_entry_help_data *pg =  &help_data->data[i];
1720 		if (pg->pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1721 			struct cos_entry_help_data *data = &cos_data->
1722 							    data[entry];
1723 			/* Fill BW entry */
1724 			data->cos_bw = DCBX_PG_BW_GET(ets->pg_bw_tbl, pg->pg);
1725 			data->strict = BNX2X_DCBX_STRICT_INVALID;
1726 			data->pri_join_mask = pg->pg_priority;
1727 			data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1728 						data->pri_join_mask);
1729 
1730 			entry++;
1731 		} else {
1732 			need_num_of_entries =  min_t(u8,
1733 				(u8)pg->num_of_dif_pri,
1734 				(u8)DCBX_COS_MAX_NUM_E3B0 -
1735 						 help_data->num_of_pg + 1);
1736 			/*
1737 			 * If there are still VOQ-s which have no associated PG,
1738 			 * then associate these VOQ-s to PG15. These PG-s will
1739 			 * be used for SP between priorities on PG15.
1740 			 */
1741 			entry += bnx2x_dcbx_cee_fill_strict_pri(bp, cos_data,
1742 				entry, need_num_of_entries, pg->pg_priority);
1743 		}
1744 	}
1745 
1746 	/* the entry will represent the number of COSes used */
1747 	cos_data->num_of_cos = entry;
1748 }
bnx2x_dcbx_fill_cos_params(struct bnx2x * bp,struct pg_help_data * help_data,struct dcbx_ets_feature * ets,u32 * pg_pri_orginal_spread)1749 static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
1750 				       struct pg_help_data *help_data,
1751 				       struct dcbx_ets_feature *ets,
1752 				       u32 *pg_pri_orginal_spread)
1753 {
1754 	struct cos_help_data         cos_data;
1755 	u8                    i                           = 0;
1756 	u32                   pri_join_mask               = 0;
1757 	u8                    num_of_dif_pri              = 0;
1758 
1759 	memset(&cos_data, 0, sizeof(cos_data));
1760 
1761 	/* Validate the pg value */
1762 	for (i = 0; i < help_data->num_of_pg ; i++) {
1763 		if (DCBX_STRICT_PRIORITY != help_data->data[i].pg &&
1764 		    DCBX_MAX_NUM_PG_BW_ENTRIES <= help_data->data[i].pg)
1765 			BNX2X_ERR("Invalid pg[%d] data %x\n", i,
1766 				  help_data->data[i].pg);
1767 		pri_join_mask   |=  help_data->data[i].pg_priority;
1768 		num_of_dif_pri  += help_data->data[i].num_of_dif_pri;
1769 	}
1770 
1771 	/* defaults */
1772 	cos_data.num_of_cos = 1;
1773 	for (i = 0; i < ARRAY_SIZE(cos_data.data); i++) {
1774 		cos_data.data[i].pri_join_mask = 0;
1775 		cos_data.data[i].pausable = false;
1776 		cos_data.data[i].strict = BNX2X_DCBX_STRICT_INVALID;
1777 		cos_data.data[i].cos_bw = DCBX_INVALID_COS_BW;
1778 	}
1779 
1780 	if (CHIP_IS_E3B0(bp))
1781 		bnx2x_dcbx_cee_fill_cos_params(bp, help_data, ets,
1782 					       &cos_data, pri_join_mask);
1783 	else /* E2 + E3A0 */
1784 		bnx2x_dcbx_2cos_limit_cee_fill_cos_params(bp,
1785 							  help_data, ets,
1786 							  &cos_data,
1787 							  pg_pri_orginal_spread,
1788 							  pri_join_mask,
1789 							  num_of_dif_pri);
1790 
1791 	for (i = 0; i < cos_data.num_of_cos ; i++) {
1792 		struct bnx2x_dcbx_cos_params *p =
1793 			&bp->dcbx_port_params.ets.cos_params[i];
1794 
1795 		p->strict = cos_data.data[i].strict;
1796 		p->bw_tbl = cos_data.data[i].cos_bw;
1797 		p->pri_bitmask = cos_data.data[i].pri_join_mask;
1798 		p->pauseable = cos_data.data[i].pausable;
1799 
1800 		/* sanity */
1801 		if (p->bw_tbl != DCBX_INVALID_COS_BW ||
1802 		    p->strict != BNX2X_DCBX_STRICT_INVALID) {
1803 			if (p->pri_bitmask == 0)
1804 				BNX2X_ERR("Invalid pri_bitmask for %d\n", i);
1805 
1806 			if (CHIP_IS_E2(bp) || CHIP_IS_E3A0(bp)) {
1807 
1808 				if (p->pauseable &&
1809 				    DCBX_PFC_PRI_GET_NON_PAUSE(bp,
1810 						p->pri_bitmask) != 0)
1811 					BNX2X_ERR("Inconsistent config for pausable COS %d\n",
1812 						  i);
1813 
1814 				if (!p->pauseable &&
1815 				    DCBX_PFC_PRI_GET_PAUSE(bp,
1816 						p->pri_bitmask) != 0)
1817 					BNX2X_ERR("Inconsistent config for nonpausable COS %d\n",
1818 						  i);
1819 			}
1820 		}
1821 
1822 		if (p->pauseable)
1823 			DP(BNX2X_MSG_DCB, "COS %d PAUSABLE prijoinmask 0x%x\n",
1824 				  i, cos_data.data[i].pri_join_mask);
1825 		else
1826 			DP(BNX2X_MSG_DCB,
1827 			   "COS %d NONPAUSABLE prijoinmask 0x%x\n",
1828 			   i, cos_data.data[i].pri_join_mask);
1829 	}
1830 
1831 	bp->dcbx_port_params.ets.num_of_cos = cos_data.num_of_cos ;
1832 }
1833 
bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x * bp,u32 * set_configuration_ets_pg,u32 * pri_pg_tbl)1834 static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp,
1835 				u32 *set_configuration_ets_pg,
1836 				u32 *pri_pg_tbl)
1837 {
1838 	int i;
1839 
1840 	for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
1841 		set_configuration_ets_pg[i] = DCBX_PRI_PG_GET(pri_pg_tbl, i);
1842 
1843 		DP(BNX2X_MSG_DCB, "set_configuration_ets_pg[%d] = 0x%x\n",
1844 		   i, set_configuration_ets_pg[i]);
1845 	}
1846 }
1847 
bnx2x_dcbx_fw_struct(struct bnx2x * bp,struct bnx2x_func_tx_start_params * pfc_fw_cfg)1848 static void bnx2x_dcbx_fw_struct(struct bnx2x *bp,
1849 				 struct bnx2x_func_tx_start_params *pfc_fw_cfg)
1850 {
1851 	u16 pri_bit = 0;
1852 	u8 cos = 0, pri = 0;
1853 	struct priority_cos *tt2cos;
1854 	u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1855 	int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
1856 			     GET_FLAGS(SHMEM2_RD(bp, drv_flags),
1857 				       1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
1858 
1859 	memset(pfc_fw_cfg, 0, sizeof(*pfc_fw_cfg));
1860 
1861 	/* to disable DCB - the structure must be zeroed */
1862 	if ((bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) && !mfw_configured)
1863 		return;
1864 
1865 	/*shortcut*/
1866 	tt2cos = pfc_fw_cfg->traffic_type_to_priority_cos;
1867 
1868 	/* Fw version should be incremented each update */
1869 	pfc_fw_cfg->dcb_version = ++bp->dcb_version;
1870 	pfc_fw_cfg->dcb_enabled = 1;
1871 
1872 	/* Fill priority parameters */
1873 	for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
1874 		tt2cos[pri].priority = ttp[pri];
1875 		pri_bit = 1 << tt2cos[pri].priority;
1876 
1877 		/* Fill COS parameters based on COS calculated to
1878 		 * make it more general for future use */
1879 		for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++)
1880 			if (bp->dcbx_port_params.ets.cos_params[cos].
1881 						pri_bitmask & pri_bit)
1882 					tt2cos[pri].cos = cos;
1883 
1884 		pfc_fw_cfg->dcb_outer_pri[pri]  = ttp[pri];
1885 	}
1886 
1887 	/* we never want the FW to add a 0 vlan tag */
1888 	pfc_fw_cfg->dont_add_pri_0_en = 1;
1889 
1890 	bnx2x_dcbx_print_cos_params(bp,	pfc_fw_cfg);
1891 }
1892 
bnx2x_dcbx_pmf_update(struct bnx2x * bp)1893 void bnx2x_dcbx_pmf_update(struct bnx2x *bp)
1894 {
1895 	/* if we need to synchronize DCBX result from prev PMF
1896 	 * read it from shmem and update bp and netdev accordingly
1897 	 */
1898 	if (SHMEM2_HAS(bp, drv_flags) &&
1899 	   GET_FLAGS(SHMEM2_RD(bp, drv_flags), 1 << DRV_FLAGS_DCB_CONFIGURED)) {
1900 		/* Read neg results if dcbx is in the FW */
1901 		if (bnx2x_dcbx_read_shmem_neg_results(bp))
1902 			return;
1903 
1904 		bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
1905 					  bp->dcbx_error);
1906 		bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
1907 					 bp->dcbx_error);
1908 #ifdef BCM_DCBNL
1909 		/*
1910 		 * Add new app tlvs to dcbnl
1911 		 */
1912 		bnx2x_dcbnl_update_applist(bp, false);
1913 		/*
1914 		 * Send a notification for the new negotiated parameters
1915 		 */
1916 		dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
1917 #endif
1918 		/*
1919 		 * reconfigure the netdevice with the results of the new
1920 		 * dcbx negotiation.
1921 		 */
1922 		bnx2x_dcbx_update_tc_mapping(bp);
1923 	}
1924 }
1925 
1926 /* DCB netlink */
1927 #ifdef BCM_DCBNL
1928 
1929 #define BNX2X_DCBX_CAPS		(DCB_CAP_DCBX_LLD_MANAGED | \
1930 				DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_STATIC)
1931 
bnx2x_dcbnl_set_valid(struct bnx2x * bp)1932 static inline bool bnx2x_dcbnl_set_valid(struct bnx2x *bp)
1933 {
1934 	/* validate dcbnl call that may change HW state:
1935 	 * DCB is on and DCBX mode was SUCCESSFULLY set by the user.
1936 	 */
1937 	return bp->dcb_state && bp->dcbx_mode_uset;
1938 }
1939 
bnx2x_dcbnl_get_state(struct net_device * netdev)1940 static u8 bnx2x_dcbnl_get_state(struct net_device *netdev)
1941 {
1942 	struct bnx2x *bp = netdev_priv(netdev);
1943 	DP(BNX2X_MSG_DCB, "state = %d\n", bp->dcb_state);
1944 	return bp->dcb_state;
1945 }
1946 
bnx2x_dcbnl_set_state(struct net_device * netdev,u8 state)1947 static u8 bnx2x_dcbnl_set_state(struct net_device *netdev, u8 state)
1948 {
1949 	struct bnx2x *bp = netdev_priv(netdev);
1950 	DP(BNX2X_MSG_DCB, "state = %s\n", state ? "on" : "off");
1951 
1952 	/* Fail to set state to "enabled" if dcbx is disabled in nvram */
1953 	if (state && ((bp->dcbx_enabled == BNX2X_DCBX_ENABLED_OFF) ||
1954 		      (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_INVALID))) {
1955 		DP(BNX2X_MSG_DCB, "Can not set dcbx to enabled while it is disabled in nvm\n");
1956 		return 1;
1957 	}
1958 
1959 	bnx2x_dcbx_set_state(bp, (state ? true : false), bp->dcbx_enabled);
1960 	return 0;
1961 }
1962 
bnx2x_dcbnl_get_perm_hw_addr(struct net_device * netdev,u8 * perm_addr)1963 static void bnx2x_dcbnl_get_perm_hw_addr(struct net_device *netdev,
1964 					 u8 *perm_addr)
1965 {
1966 	struct bnx2x *bp = netdev_priv(netdev);
1967 	DP(BNX2X_MSG_DCB, "GET-PERM-ADDR\n");
1968 
1969 	/* first the HW mac address */
1970 	memcpy(perm_addr, netdev->dev_addr, netdev->addr_len);
1971 
1972 	if (CNIC_LOADED(bp))
1973 		/* second SAN address */
1974 		memcpy(perm_addr+netdev->addr_len, bp->fip_mac,
1975 		       netdev->addr_len);
1976 }
1977 
bnx2x_dcbnl_set_pg_tccfg_tx(struct net_device * netdev,int prio,u8 prio_type,u8 pgid,u8 bw_pct,u8 up_map)1978 static void bnx2x_dcbnl_set_pg_tccfg_tx(struct net_device *netdev, int prio,
1979 					u8 prio_type, u8 pgid, u8 bw_pct,
1980 					u8 up_map)
1981 {
1982 	struct bnx2x *bp = netdev_priv(netdev);
1983 
1984 	DP(BNX2X_MSG_DCB, "prio[%d] = %d\n", prio, pgid);
1985 	if (!bnx2x_dcbnl_set_valid(bp) || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
1986 		return;
1987 
1988 	/**
1989 	 * bw_pct ignored -	band-width percentage devision between user
1990 	 *			priorities within the same group is not
1991 	 *			standard and hence not supported
1992 	 *
1993 	 * prio_type ignored -	priority levels within the same group are not
1994 	 *			standard and hence are not supported. According
1995 	 *			to the standard pgid 15 is dedicated to strict
1996 	 *			priority traffic (on the port level).
1997 	 *
1998 	 * up_map ignored
1999 	 */
2000 
2001 	bp->dcbx_config_params.admin_configuration_ets_pg[prio] = pgid;
2002 	bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
2003 }
2004 
bnx2x_dcbnl_set_pg_bwgcfg_tx(struct net_device * netdev,int pgid,u8 bw_pct)2005 static void bnx2x_dcbnl_set_pg_bwgcfg_tx(struct net_device *netdev,
2006 					 int pgid, u8 bw_pct)
2007 {
2008 	struct bnx2x *bp = netdev_priv(netdev);
2009 	DP(BNX2X_MSG_DCB, "pgid[%d] = %d\n", pgid, bw_pct);
2010 
2011 	if (!bnx2x_dcbnl_set_valid(bp) || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
2012 		return;
2013 
2014 	bp->dcbx_config_params.admin_configuration_bw_precentage[pgid] = bw_pct;
2015 	bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
2016 }
2017 
bnx2x_dcbnl_set_pg_tccfg_rx(struct net_device * netdev,int prio,u8 prio_type,u8 pgid,u8 bw_pct,u8 up_map)2018 static void bnx2x_dcbnl_set_pg_tccfg_rx(struct net_device *netdev, int prio,
2019 					u8 prio_type, u8 pgid, u8 bw_pct,
2020 					u8 up_map)
2021 {
2022 	struct bnx2x *bp = netdev_priv(netdev);
2023 	DP(BNX2X_MSG_DCB, "Nothing to set; No RX support\n");
2024 }
2025 
bnx2x_dcbnl_set_pg_bwgcfg_rx(struct net_device * netdev,int pgid,u8 bw_pct)2026 static void bnx2x_dcbnl_set_pg_bwgcfg_rx(struct net_device *netdev,
2027 					 int pgid, u8 bw_pct)
2028 {
2029 	struct bnx2x *bp = netdev_priv(netdev);
2030 	DP(BNX2X_MSG_DCB, "Nothing to set; No RX support\n");
2031 }
2032 
bnx2x_dcbnl_get_pg_tccfg_tx(struct net_device * netdev,int prio,u8 * prio_type,u8 * pgid,u8 * bw_pct,u8 * up_map)2033 static void bnx2x_dcbnl_get_pg_tccfg_tx(struct net_device *netdev, int prio,
2034 					u8 *prio_type, u8 *pgid, u8 *bw_pct,
2035 					u8 *up_map)
2036 {
2037 	struct bnx2x *bp = netdev_priv(netdev);
2038 	DP(BNX2X_MSG_DCB, "prio = %d\n", prio);
2039 
2040 	/**
2041 	 * bw_pct ignored -	band-width percentage devision between user
2042 	 *			priorities within the same group is not
2043 	 *			standard and hence not supported
2044 	 *
2045 	 * prio_type ignored -	priority levels within the same group are not
2046 	 *			standard and hence are not supported. According
2047 	 *			to the standard pgid 15 is dedicated to strict
2048 	 *			priority traffic (on the port level).
2049 	 *
2050 	 * up_map ignored
2051 	 */
2052 	*up_map = *bw_pct = *prio_type = *pgid = 0;
2053 
2054 	if (!bp->dcb_state || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
2055 		return;
2056 
2057 	*pgid = DCBX_PRI_PG_GET(bp->dcbx_local_feat.ets.pri_pg_tbl, prio);
2058 }
2059 
bnx2x_dcbnl_get_pg_bwgcfg_tx(struct net_device * netdev,int pgid,u8 * bw_pct)2060 static void bnx2x_dcbnl_get_pg_bwgcfg_tx(struct net_device *netdev,
2061 					 int pgid, u8 *bw_pct)
2062 {
2063 	struct bnx2x *bp = netdev_priv(netdev);
2064 	DP(BNX2X_MSG_DCB, "pgid = %d\n", pgid);
2065 
2066 	*bw_pct = 0;
2067 
2068 	if (!bp->dcb_state || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
2069 		return;
2070 
2071 	*bw_pct = DCBX_PG_BW_GET(bp->dcbx_local_feat.ets.pg_bw_tbl, pgid);
2072 }
2073 
bnx2x_dcbnl_get_pg_tccfg_rx(struct net_device * netdev,int prio,u8 * prio_type,u8 * pgid,u8 * bw_pct,u8 * up_map)2074 static void bnx2x_dcbnl_get_pg_tccfg_rx(struct net_device *netdev, int prio,
2075 					u8 *prio_type, u8 *pgid, u8 *bw_pct,
2076 					u8 *up_map)
2077 {
2078 	struct bnx2x *bp = netdev_priv(netdev);
2079 	DP(BNX2X_MSG_DCB, "Nothing to get; No RX support\n");
2080 
2081 	*prio_type = *pgid = *bw_pct = *up_map = 0;
2082 }
2083 
bnx2x_dcbnl_get_pg_bwgcfg_rx(struct net_device * netdev,int pgid,u8 * bw_pct)2084 static void bnx2x_dcbnl_get_pg_bwgcfg_rx(struct net_device *netdev,
2085 					 int pgid, u8 *bw_pct)
2086 {
2087 	struct bnx2x *bp = netdev_priv(netdev);
2088 	DP(BNX2X_MSG_DCB, "Nothing to get; No RX support\n");
2089 
2090 	*bw_pct = 0;
2091 }
2092 
bnx2x_dcbnl_set_pfc_cfg(struct net_device * netdev,int prio,u8 setting)2093 static void bnx2x_dcbnl_set_pfc_cfg(struct net_device *netdev, int prio,
2094 				    u8 setting)
2095 {
2096 	struct bnx2x *bp = netdev_priv(netdev);
2097 	DP(BNX2X_MSG_DCB, "prio[%d] = %d\n", prio, setting);
2098 
2099 	if (!bnx2x_dcbnl_set_valid(bp) || prio >= MAX_PFC_PRIORITIES)
2100 		return;
2101 
2102 	if (setting) {
2103 		bp->dcbx_config_params.admin_pfc_bitmap |= (1 << prio);
2104 		bp->dcbx_config_params.admin_pfc_tx_enable = 1;
2105 	} else {
2106 		bp->dcbx_config_params.admin_pfc_bitmap &= ~(1 << prio);
2107 	}
2108 }
2109 
bnx2x_dcbnl_get_pfc_cfg(struct net_device * netdev,int prio,u8 * setting)2110 static void bnx2x_dcbnl_get_pfc_cfg(struct net_device *netdev, int prio,
2111 				    u8 *setting)
2112 {
2113 	struct bnx2x *bp = netdev_priv(netdev);
2114 	DP(BNX2X_MSG_DCB, "prio = %d\n", prio);
2115 
2116 	*setting = 0;
2117 
2118 	if (!bp->dcb_state || prio >= MAX_PFC_PRIORITIES)
2119 		return;
2120 
2121 	*setting = (bp->dcbx_local_feat.pfc.pri_en_bitmap >> prio) & 0x1;
2122 }
2123 
bnx2x_dcbnl_set_all(struct net_device * netdev)2124 static u8 bnx2x_dcbnl_set_all(struct net_device *netdev)
2125 {
2126 	struct bnx2x *bp = netdev_priv(netdev);
2127 
2128 	DP(BNX2X_MSG_DCB, "SET-ALL\n");
2129 
2130 	if (!bnx2x_dcbnl_set_valid(bp))
2131 		return 1;
2132 
2133 	if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
2134 		netdev_err(bp->dev,
2135 			   "Handling parity error recovery. Try again later\n");
2136 		return 1;
2137 	}
2138 	if (netif_running(bp->dev)) {
2139 		bnx2x_update_drv_flags(bp,
2140 				       1 << DRV_FLAGS_DCB_MFW_CONFIGURED,
2141 				       1);
2142 		bnx2x_dcbx_init(bp, true);
2143 	}
2144 	DP(BNX2X_MSG_DCB, "set_dcbx_params done\n");
2145 
2146 	return 0;
2147 }
2148 
bnx2x_dcbnl_get_cap(struct net_device * netdev,int capid,u8 * cap)2149 static u8 bnx2x_dcbnl_get_cap(struct net_device *netdev, int capid, u8 *cap)
2150 {
2151 	struct bnx2x *bp = netdev_priv(netdev);
2152 	u8 rval = 0;
2153 
2154 	if (bp->dcb_state) {
2155 		switch (capid) {
2156 		case DCB_CAP_ATTR_PG:
2157 			*cap = true;
2158 			break;
2159 		case DCB_CAP_ATTR_PFC:
2160 			*cap = true;
2161 			break;
2162 		case DCB_CAP_ATTR_UP2TC:
2163 			*cap = false;
2164 			break;
2165 		case DCB_CAP_ATTR_PG_TCS:
2166 			*cap = 0x80;	/* 8 priorities for PGs */
2167 			break;
2168 		case DCB_CAP_ATTR_PFC_TCS:
2169 			*cap = 0x80;	/* 8 priorities for PFC */
2170 			break;
2171 		case DCB_CAP_ATTR_GSP:
2172 			*cap = true;
2173 			break;
2174 		case DCB_CAP_ATTR_BCN:
2175 			*cap = false;
2176 			break;
2177 		case DCB_CAP_ATTR_DCBX:
2178 			*cap = BNX2X_DCBX_CAPS;
2179 			break;
2180 		default:
2181 			BNX2X_ERR("Non valid capability ID\n");
2182 			rval = 1;
2183 			break;
2184 		}
2185 	} else {
2186 		DP(BNX2X_MSG_DCB, "DCB disabled\n");
2187 		rval = 1;
2188 	}
2189 
2190 	DP(BNX2X_MSG_DCB, "capid %d:%x\n", capid, *cap);
2191 	return rval;
2192 }
2193 
bnx2x_dcbnl_get_numtcs(struct net_device * netdev,int tcid,u8 * num)2194 static int bnx2x_dcbnl_get_numtcs(struct net_device *netdev, int tcid, u8 *num)
2195 {
2196 	struct bnx2x *bp = netdev_priv(netdev);
2197 	u8 rval = 0;
2198 
2199 	DP(BNX2X_MSG_DCB, "tcid %d\n", tcid);
2200 
2201 	if (bp->dcb_state) {
2202 		switch (tcid) {
2203 		case DCB_NUMTCS_ATTR_PG:
2204 			*num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
2205 						  DCBX_COS_MAX_NUM_E2;
2206 			break;
2207 		case DCB_NUMTCS_ATTR_PFC:
2208 			*num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
2209 						  DCBX_COS_MAX_NUM_E2;
2210 			break;
2211 		default:
2212 			BNX2X_ERR("Non valid TC-ID\n");
2213 			rval = 1;
2214 			break;
2215 		}
2216 	} else {
2217 		DP(BNX2X_MSG_DCB, "DCB disabled\n");
2218 		rval = 1;
2219 	}
2220 
2221 	return rval;
2222 }
2223 
bnx2x_dcbnl_set_numtcs(struct net_device * netdev,int tcid,u8 num)2224 static int bnx2x_dcbnl_set_numtcs(struct net_device *netdev, int tcid, u8 num)
2225 {
2226 	struct bnx2x *bp = netdev_priv(netdev);
2227 	DP(BNX2X_MSG_DCB, "num tcs = %d; Not supported\n", num);
2228 	return -EINVAL;
2229 }
2230 
bnx2x_dcbnl_get_pfc_state(struct net_device * netdev)2231 static u8 bnx2x_dcbnl_get_pfc_state(struct net_device *netdev)
2232 {
2233 	struct bnx2x *bp = netdev_priv(netdev);
2234 	DP(BNX2X_MSG_DCB, "state = %d\n", bp->dcbx_local_feat.pfc.enabled);
2235 
2236 	if (!bp->dcb_state)
2237 		return 0;
2238 
2239 	return bp->dcbx_local_feat.pfc.enabled;
2240 }
2241 
bnx2x_dcbnl_set_pfc_state(struct net_device * netdev,u8 state)2242 static void bnx2x_dcbnl_set_pfc_state(struct net_device *netdev, u8 state)
2243 {
2244 	struct bnx2x *bp = netdev_priv(netdev);
2245 	DP(BNX2X_MSG_DCB, "state = %s\n", state ? "on" : "off");
2246 
2247 	if (!bnx2x_dcbnl_set_valid(bp))
2248 		return;
2249 
2250 	bp->dcbx_config_params.admin_pfc_tx_enable =
2251 	bp->dcbx_config_params.admin_pfc_enable = (state ? 1 : 0);
2252 }
2253 
bnx2x_admin_app_set_ent(struct bnx2x_admin_priority_app_table * app_ent,u8 idtype,u16 idval,u8 up)2254 static void bnx2x_admin_app_set_ent(
2255 	struct bnx2x_admin_priority_app_table *app_ent,
2256 	u8 idtype, u16 idval, u8 up)
2257 {
2258 	app_ent->valid = 1;
2259 
2260 	switch (idtype) {
2261 	case DCB_APP_IDTYPE_ETHTYPE:
2262 		app_ent->traffic_type = TRAFFIC_TYPE_ETH;
2263 		break;
2264 	case DCB_APP_IDTYPE_PORTNUM:
2265 		app_ent->traffic_type = TRAFFIC_TYPE_PORT;
2266 		break;
2267 	default:
2268 		break; /* never gets here */
2269 	}
2270 	app_ent->app_id = idval;
2271 	app_ent->priority = up;
2272 }
2273 
bnx2x_admin_app_is_equal(struct bnx2x_admin_priority_app_table * app_ent,u8 idtype,u16 idval)2274 static bool bnx2x_admin_app_is_equal(
2275 	struct bnx2x_admin_priority_app_table *app_ent,
2276 	u8 idtype, u16 idval)
2277 {
2278 	if (!app_ent->valid)
2279 		return false;
2280 
2281 	switch (idtype) {
2282 	case DCB_APP_IDTYPE_ETHTYPE:
2283 		if (app_ent->traffic_type != TRAFFIC_TYPE_ETH)
2284 			return false;
2285 		break;
2286 	case DCB_APP_IDTYPE_PORTNUM:
2287 		if (app_ent->traffic_type != TRAFFIC_TYPE_PORT)
2288 			return false;
2289 		break;
2290 	default:
2291 		return false;
2292 	}
2293 	if (app_ent->app_id != idval)
2294 		return false;
2295 
2296 	return true;
2297 }
2298 
bnx2x_set_admin_app_up(struct bnx2x * bp,u8 idtype,u16 idval,u8 up)2299 static int bnx2x_set_admin_app_up(struct bnx2x *bp, u8 idtype, u16 idval, u8 up)
2300 {
2301 	int i, ff;
2302 
2303 	/* iterate over the app entries looking for idtype and idval */
2304 	for (i = 0, ff = -1; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) {
2305 		struct bnx2x_admin_priority_app_table *app_ent =
2306 			&bp->dcbx_config_params.admin_priority_app_table[i];
2307 		if (bnx2x_admin_app_is_equal(app_ent, idtype, idval))
2308 			break;
2309 
2310 		if (ff < 0 && !app_ent->valid)
2311 			ff = i;
2312 	}
2313 	if (i < DCBX_CONFIG_MAX_APP_PROTOCOL)
2314 		/* if found overwrite up */
2315 		bp->dcbx_config_params.
2316 			admin_priority_app_table[i].priority = up;
2317 	else if (ff >= 0)
2318 		/* not found use first-free */
2319 		bnx2x_admin_app_set_ent(
2320 			&bp->dcbx_config_params.admin_priority_app_table[ff],
2321 			idtype, idval, up);
2322 	else {
2323 		/* app table is full */
2324 		BNX2X_ERR("Application table is too large\n");
2325 		return -EBUSY;
2326 	}
2327 
2328 	/* up configured, if not 0 make sure feature is enabled */
2329 	if (up)
2330 		bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
2331 
2332 	return 0;
2333 }
2334 
bnx2x_dcbnl_set_app_up(struct net_device * netdev,u8 idtype,u16 idval,u8 up)2335 static int bnx2x_dcbnl_set_app_up(struct net_device *netdev, u8 idtype,
2336 				  u16 idval, u8 up)
2337 {
2338 	struct bnx2x *bp = netdev_priv(netdev);
2339 
2340 	DP(BNX2X_MSG_DCB, "app_type %d, app_id %x, prio bitmap %d\n",
2341 	   idtype, idval, up);
2342 
2343 	if (!bnx2x_dcbnl_set_valid(bp)) {
2344 		DP(BNX2X_MSG_DCB, "dcbnl call not valid\n");
2345 		return -EINVAL;
2346 	}
2347 
2348 	/* verify idtype */
2349 	switch (idtype) {
2350 	case DCB_APP_IDTYPE_ETHTYPE:
2351 	case DCB_APP_IDTYPE_PORTNUM:
2352 		break;
2353 	default:
2354 		DP(BNX2X_MSG_DCB, "Wrong ID type\n");
2355 		return -EINVAL;
2356 	}
2357 	return bnx2x_set_admin_app_up(bp, idtype, idval, up);
2358 }
2359 
bnx2x_dcbnl_get_dcbx(struct net_device * netdev)2360 static u8 bnx2x_dcbnl_get_dcbx(struct net_device *netdev)
2361 {
2362 	struct bnx2x *bp = netdev_priv(netdev);
2363 	u8 state;
2364 
2365 	state = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_CEE;
2366 
2367 	if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF)
2368 		state |= DCB_CAP_DCBX_STATIC;
2369 
2370 	return state;
2371 }
2372 
bnx2x_dcbnl_set_dcbx(struct net_device * netdev,u8 state)2373 static u8 bnx2x_dcbnl_set_dcbx(struct net_device *netdev, u8 state)
2374 {
2375 	struct bnx2x *bp = netdev_priv(netdev);
2376 	DP(BNX2X_MSG_DCB, "state = %02x\n", state);
2377 
2378 	/* set dcbx mode */
2379 
2380 	if ((state & BNX2X_DCBX_CAPS) != state) {
2381 		BNX2X_ERR("Requested DCBX mode %x is beyond advertised capabilities\n",
2382 			  state);
2383 		return 1;
2384 	}
2385 
2386 	if (bp->dcb_state != BNX2X_DCB_STATE_ON) {
2387 		BNX2X_ERR("DCB turned off, DCBX configuration is invalid\n");
2388 		return 1;
2389 	}
2390 
2391 	if (state & DCB_CAP_DCBX_STATIC)
2392 		bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_OFF;
2393 	else
2394 		bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_ON;
2395 
2396 	bp->dcbx_mode_uset = true;
2397 	return 0;
2398 }
2399 
bnx2x_dcbnl_get_featcfg(struct net_device * netdev,int featid,u8 * flags)2400 static u8 bnx2x_dcbnl_get_featcfg(struct net_device *netdev, int featid,
2401 				  u8 *flags)
2402 {
2403 	struct bnx2x *bp = netdev_priv(netdev);
2404 	u8 rval = 0;
2405 
2406 	DP(BNX2X_MSG_DCB, "featid %d\n", featid);
2407 
2408 	if (bp->dcb_state) {
2409 		*flags = 0;
2410 		switch (featid) {
2411 		case DCB_FEATCFG_ATTR_PG:
2412 			if (bp->dcbx_local_feat.ets.enabled)
2413 				*flags |= DCB_FEATCFG_ENABLE;
2414 			if (bp->dcbx_error & (DCBX_LOCAL_ETS_ERROR |
2415 					      DCBX_REMOTE_MIB_ERROR))
2416 				*flags |= DCB_FEATCFG_ERROR;
2417 			break;
2418 		case DCB_FEATCFG_ATTR_PFC:
2419 			if (bp->dcbx_local_feat.pfc.enabled)
2420 				*flags |= DCB_FEATCFG_ENABLE;
2421 			if (bp->dcbx_error & (DCBX_LOCAL_PFC_ERROR |
2422 					      DCBX_LOCAL_PFC_MISMATCH |
2423 					      DCBX_REMOTE_MIB_ERROR))
2424 				*flags |= DCB_FEATCFG_ERROR;
2425 			break;
2426 		case DCB_FEATCFG_ATTR_APP:
2427 			if (bp->dcbx_local_feat.app.enabled)
2428 				*flags |= DCB_FEATCFG_ENABLE;
2429 			if (bp->dcbx_error & (DCBX_LOCAL_APP_ERROR |
2430 					      DCBX_LOCAL_APP_MISMATCH |
2431 					      DCBX_REMOTE_MIB_ERROR))
2432 				*flags |= DCB_FEATCFG_ERROR;
2433 			break;
2434 		default:
2435 			BNX2X_ERR("Non valid feature-ID\n");
2436 			rval = 1;
2437 			break;
2438 		}
2439 	} else {
2440 		DP(BNX2X_MSG_DCB, "DCB disabled\n");
2441 		rval = 1;
2442 	}
2443 
2444 	return rval;
2445 }
2446 
bnx2x_dcbnl_set_featcfg(struct net_device * netdev,int featid,u8 flags)2447 static u8 bnx2x_dcbnl_set_featcfg(struct net_device *netdev, int featid,
2448 				  u8 flags)
2449 {
2450 	struct bnx2x *bp = netdev_priv(netdev);
2451 	u8 rval = 0;
2452 
2453 	DP(BNX2X_MSG_DCB, "featid = %d flags = %02x\n", featid, flags);
2454 
2455 	/* ignore the 'advertise' flag */
2456 	if (bnx2x_dcbnl_set_valid(bp)) {
2457 		switch (featid) {
2458 		case DCB_FEATCFG_ATTR_PG:
2459 			bp->dcbx_config_params.admin_ets_enable =
2460 				flags & DCB_FEATCFG_ENABLE ? 1 : 0;
2461 			bp->dcbx_config_params.admin_ets_willing =
2462 				flags & DCB_FEATCFG_WILLING ? 1 : 0;
2463 			break;
2464 		case DCB_FEATCFG_ATTR_PFC:
2465 			bp->dcbx_config_params.admin_pfc_enable =
2466 				flags & DCB_FEATCFG_ENABLE ? 1 : 0;
2467 			bp->dcbx_config_params.admin_pfc_willing =
2468 				flags & DCB_FEATCFG_WILLING ? 1 : 0;
2469 			break;
2470 		case DCB_FEATCFG_ATTR_APP:
2471 			/* ignore enable, always enabled */
2472 			bp->dcbx_config_params.admin_app_priority_willing =
2473 				flags & DCB_FEATCFG_WILLING ? 1 : 0;
2474 			break;
2475 		default:
2476 			BNX2X_ERR("Non valid feature-ID\n");
2477 			rval = 1;
2478 			break;
2479 		}
2480 	} else {
2481 		DP(BNX2X_MSG_DCB, "dcbnl call not valid\n");
2482 		rval = 1;
2483 	}
2484 
2485 	return rval;
2486 }
2487 
bnx2x_peer_appinfo(struct net_device * netdev,struct dcb_peer_app_info * info,u16 * app_count)2488 static int bnx2x_peer_appinfo(struct net_device *netdev,
2489 			      struct dcb_peer_app_info *info, u16* app_count)
2490 {
2491 	int i;
2492 	struct bnx2x *bp = netdev_priv(netdev);
2493 
2494 	DP(BNX2X_MSG_DCB, "APP-INFO\n");
2495 
2496 	info->willing = (bp->dcbx_remote_flags & DCBX_APP_REM_WILLING) ?: 0;
2497 	info->error = (bp->dcbx_remote_flags & DCBX_APP_RX_ERROR) ?: 0;
2498 	*app_count = 0;
2499 
2500 	for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++)
2501 		if (bp->dcbx_remote_feat.app.app_pri_tbl[i].appBitfield &
2502 		    DCBX_APP_ENTRY_VALID)
2503 			(*app_count)++;
2504 	return 0;
2505 }
2506 
bnx2x_peer_apptable(struct net_device * netdev,struct dcb_app * table)2507 static int bnx2x_peer_apptable(struct net_device *netdev,
2508 			       struct dcb_app *table)
2509 {
2510 	int i, j;
2511 	struct bnx2x *bp = netdev_priv(netdev);
2512 
2513 	DP(BNX2X_MSG_DCB, "APP-TABLE\n");
2514 
2515 	for (i = 0, j = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
2516 		struct dcbx_app_priority_entry *ent =
2517 			&bp->dcbx_remote_feat.app.app_pri_tbl[i];
2518 
2519 		if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
2520 			table[j].selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
2521 			table[j].priority = bnx2x_dcbx_dcbnl_app_up(ent);
2522 			table[j++].protocol = ent->app_id;
2523 		}
2524 	}
2525 	return 0;
2526 }
2527 
bnx2x_cee_peer_getpg(struct net_device * netdev,struct cee_pg * pg)2528 static int bnx2x_cee_peer_getpg(struct net_device *netdev, struct cee_pg *pg)
2529 {
2530 	int i;
2531 	struct bnx2x *bp = netdev_priv(netdev);
2532 
2533 	pg->willing = (bp->dcbx_remote_flags & DCBX_ETS_REM_WILLING) ?: 0;
2534 
2535 	for (i = 0; i < CEE_DCBX_MAX_PGS; i++) {
2536 		pg->pg_bw[i] =
2537 			DCBX_PG_BW_GET(bp->dcbx_remote_feat.ets.pg_bw_tbl, i);
2538 		pg->prio_pg[i] =
2539 			DCBX_PRI_PG_GET(bp->dcbx_remote_feat.ets.pri_pg_tbl, i);
2540 	}
2541 	return 0;
2542 }
2543 
bnx2x_cee_peer_getpfc(struct net_device * netdev,struct cee_pfc * pfc)2544 static int bnx2x_cee_peer_getpfc(struct net_device *netdev,
2545 				 struct cee_pfc *pfc)
2546 {
2547 	struct bnx2x *bp = netdev_priv(netdev);
2548 	pfc->tcs_supported = bp->dcbx_remote_feat.pfc.pfc_caps;
2549 	pfc->pfc_en = bp->dcbx_remote_feat.pfc.pri_en_bitmap;
2550 	return 0;
2551 }
2552 
2553 const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops = {
2554 	.getstate		= bnx2x_dcbnl_get_state,
2555 	.setstate		= bnx2x_dcbnl_set_state,
2556 	.getpermhwaddr		= bnx2x_dcbnl_get_perm_hw_addr,
2557 	.setpgtccfgtx		= bnx2x_dcbnl_set_pg_tccfg_tx,
2558 	.setpgbwgcfgtx		= bnx2x_dcbnl_set_pg_bwgcfg_tx,
2559 	.setpgtccfgrx		= bnx2x_dcbnl_set_pg_tccfg_rx,
2560 	.setpgbwgcfgrx		= bnx2x_dcbnl_set_pg_bwgcfg_rx,
2561 	.getpgtccfgtx		= bnx2x_dcbnl_get_pg_tccfg_tx,
2562 	.getpgbwgcfgtx		= bnx2x_dcbnl_get_pg_bwgcfg_tx,
2563 	.getpgtccfgrx		= bnx2x_dcbnl_get_pg_tccfg_rx,
2564 	.getpgbwgcfgrx		= bnx2x_dcbnl_get_pg_bwgcfg_rx,
2565 	.setpfccfg		= bnx2x_dcbnl_set_pfc_cfg,
2566 	.getpfccfg		= bnx2x_dcbnl_get_pfc_cfg,
2567 	.setall			= bnx2x_dcbnl_set_all,
2568 	.getcap			= bnx2x_dcbnl_get_cap,
2569 	.getnumtcs		= bnx2x_dcbnl_get_numtcs,
2570 	.setnumtcs		= bnx2x_dcbnl_set_numtcs,
2571 	.getpfcstate		= bnx2x_dcbnl_get_pfc_state,
2572 	.setpfcstate		= bnx2x_dcbnl_set_pfc_state,
2573 	.setapp			= bnx2x_dcbnl_set_app_up,
2574 	.getdcbx		= bnx2x_dcbnl_get_dcbx,
2575 	.setdcbx		= bnx2x_dcbnl_set_dcbx,
2576 	.getfeatcfg		= bnx2x_dcbnl_get_featcfg,
2577 	.setfeatcfg		= bnx2x_dcbnl_set_featcfg,
2578 	.peer_getappinfo	= bnx2x_peer_appinfo,
2579 	.peer_getapptable	= bnx2x_peer_apptable,
2580 	.cee_peer_getpg		= bnx2x_cee_peer_getpg,
2581 	.cee_peer_getpfc	= bnx2x_cee_peer_getpfc,
2582 };
2583 
2584 #endif /* BCM_DCBNL */
2585