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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / net / ethernet / broadcom / bnx2x / bnx2x_dcb.c
blob6d82ade4c31c0ab9e676774c3c2c073a3cd50d9f
1 /* bnx2x_dcb.c: Broadcom Everest network driver.
2 *
3 * Copyright 2009-2011 Broadcom Corporation
4 *
5 * Unless you and Broadcom execute a separate written software license
6 * agreement governing use of this software, this software is licensed to you
7 * under the terms of the GNU General Public License version 2, available
8 * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL").
9 *
10 * Notwithstanding the above, under no circumstances may you combine this
11 * software in any way with any other Broadcom software provided under a
12 * license other than the GPL, without Broadcom's express prior written
13 * consent.
14 *
15 * Maintained by: Eilon Greenstein <eilong@broadcom.com>
16 * Written by: Dmitry Kravkov
17 *
18 */
19
20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21
22 #include <linux/netdevice.h>
23 #include <linux/types.h>
24 #include <linux/errno.h>
25 #include <linux/rtnetlink.h>
26 #include <net/dcbnl.h>
27
28 #include "bnx2x.h"
29 #include "bnx2x_cmn.h"
30 #include "bnx2x_dcb.h"
31
32 /* forward declarations of dcbx related functions */
33 static int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp);
34 static void bnx2x_pfc_set_pfc(struct bnx2x *bp);
35 static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp);
36 static int bnx2x_dcbx_resume_hw_tx(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 */
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
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
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 lossy and COS1 to lossless
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 = 0;
107 /* RX COS1 */
108 pfc_params.llfc_high_priority_classes = DCBX_PFC_PRI_PAUSE_MASK(bp);
109
110 /* BRB configuration */
111 pfc_params.cos0_pauseable = false;
112 pfc_params.cos1_pauseable = true;
113
114 bnx2x_acquire_phy_lock(bp);
115 bp->link_params.feature_config_flags |= FEATURE_CONFIG_PFC_ENABLED;
116 bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &pfc_params);
117 bnx2x_release_phy_lock(bp);
118 }
119
120 static void bnx2x_pfc_clear(struct bnx2x *bp)
121 {
122 struct bnx2x_nig_brb_pfc_port_params nig_params = {0};
123 nig_params.pause_enable = 1;
124 #ifdef BNX2X_SAFC
125 if (bp->flags & SAFC_TX_FLAG) {
126 u32 high = 0, low = 0;
127 int i;
128
129 for (i = 0; i < BNX2X_MAX_PRIORITY; i++) {
130 if (bp->pri_map[i] == 1)
131 high |= (1 << i);
132 if (bp->pri_map[i] == 0)
133 low |= (1 << i);
134 }
135
136 nig_params.llfc_low_priority_classes = high;
137 nig_params.llfc_low_priority_classes = low;
138
139 nig_params.pause_enable = 0;
140 nig_params.llfc_enable = 1;
141 nig_params.llfc_out_en = 1;
142 }
143 #endif /* BNX2X_SAFC */
144 bnx2x_acquire_phy_lock(bp);
145 bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_PFC_ENABLED;
146 bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &nig_params);
147 bnx2x_release_phy_lock(bp);
148 }
149
150 static void bnx2x_dump_dcbx_drv_param(struct bnx2x *bp,
151 struct dcbx_features *features,
152 u32 error)
153 {
154 u8 i = 0;
155 DP(NETIF_MSG_LINK, "local_mib.error %x\n", error);
156
157 /* PG */
158 DP(NETIF_MSG_LINK,
159 "local_mib.features.ets.enabled %x\n", features->ets.enabled);
160 for (i = 0; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++)
161 DP(NETIF_MSG_LINK,
162 "local_mib.features.ets.pg_bw_tbl[%d] %d\n", i,
163 DCBX_PG_BW_GET(features->ets.pg_bw_tbl, i));
164 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++)
165 DP(NETIF_MSG_LINK,
166 "local_mib.features.ets.pri_pg_tbl[%d] %d\n", i,
167 DCBX_PRI_PG_GET(features->ets.pri_pg_tbl, i));
168
169 /* pfc */
170 DP(NETIF_MSG_LINK, "dcbx_features.pfc.pri_en_bitmap %x\n",
171 features->pfc.pri_en_bitmap);
172 DP(NETIF_MSG_LINK, "dcbx_features.pfc.pfc_caps %x\n",
173 features->pfc.pfc_caps);
174 DP(NETIF_MSG_LINK, "dcbx_features.pfc.enabled %x\n",
175 features->pfc.enabled);
176
177 DP(NETIF_MSG_LINK, "dcbx_features.app.default_pri %x\n",
178 features->app.default_pri);
179 DP(NETIF_MSG_LINK, "dcbx_features.app.tc_supported %x\n",
180 features->app.tc_supported);
181 DP(NETIF_MSG_LINK, "dcbx_features.app.enabled %x\n",
182 features->app.enabled);
183 for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
184 DP(NETIF_MSG_LINK,
185 "dcbx_features.app.app_pri_tbl[%x].app_id %x\n",
186 i, features->app.app_pri_tbl[i].app_id);
187 DP(NETIF_MSG_LINK,
188 "dcbx_features.app.app_pri_tbl[%x].pri_bitmap %x\n",
189 i, features->app.app_pri_tbl[i].pri_bitmap);
190 DP(NETIF_MSG_LINK,
191 "dcbx_features.app.app_pri_tbl[%x].appBitfield %x\n",
192 i, features->app.app_pri_tbl[i].appBitfield);
193 }
194 }
195
196 static void bnx2x_dcbx_get_ap_priority(struct bnx2x *bp,
197 u8 pri_bitmap,
198 u8 llfc_traf_type)
199 {
200 u32 pri = MAX_PFC_PRIORITIES;
201 u32 index = MAX_PFC_PRIORITIES - 1;
202 u32 pri_mask;
203 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
204
205 /* Choose the highest priority */
206 while ((MAX_PFC_PRIORITIES == pri) && (0 != index)) {
207 pri_mask = 1 << index;
208 if (GET_FLAGS(pri_bitmap, pri_mask))
209 pri = index ;
210 index--;
211 }
212
213 if (pri < MAX_PFC_PRIORITIES)
214 ttp[llfc_traf_type] = max_t(u32, ttp[llfc_traf_type], pri);
215 }
216
217 static void bnx2x_dcbx_get_ap_feature(struct bnx2x *bp,
218 struct dcbx_app_priority_feature *app,
219 u32 error) {
220 u8 index;
221 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
222
223 if (GET_FLAGS(error, DCBX_LOCAL_APP_ERROR))
224 DP(NETIF_MSG_LINK, "DCBX_LOCAL_APP_ERROR\n");
225
226 if (GET_FLAGS(error, DCBX_LOCAL_APP_MISMATCH))
227 DP(NETIF_MSG_LINK, "DCBX_LOCAL_APP_MISMATCH\n");
228
229 if (app->enabled &&
230 !GET_FLAGS(error, DCBX_LOCAL_APP_ERROR | DCBX_LOCAL_APP_MISMATCH)) {
231
232 bp->dcbx_port_params.app.enabled = true;
233
234 for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
235 ttp[index] = 0;
236
237 if (app->default_pri < MAX_PFC_PRIORITIES)
238 ttp[LLFC_TRAFFIC_TYPE_NW] = app->default_pri;
239
240 for (index = 0 ; index < DCBX_MAX_APP_PROTOCOL; index++) {
241 struct dcbx_app_priority_entry *entry =
242 app->app_pri_tbl;
243
244 if (GET_FLAGS(entry[index].appBitfield,
245 DCBX_APP_SF_ETH_TYPE) &&
246 ETH_TYPE_FCOE == entry[index].app_id)
247 bnx2x_dcbx_get_ap_priority(bp,
248 entry[index].pri_bitmap,
249 LLFC_TRAFFIC_TYPE_FCOE);
250
251 if (GET_FLAGS(entry[index].appBitfield,
252 DCBX_APP_SF_PORT) &&
253 TCP_PORT_ISCSI == entry[index].app_id)
254 bnx2x_dcbx_get_ap_priority(bp,
255 entry[index].pri_bitmap,
256 LLFC_TRAFFIC_TYPE_ISCSI);
257 }
258 } else {
259 DP(NETIF_MSG_LINK, "DCBX_LOCAL_APP_DISABLED\n");
260 bp->dcbx_port_params.app.enabled = false;
261 for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
262 ttp[index] = INVALID_TRAFFIC_TYPE_PRIORITY;
263 }
264 }
265
266 static void bnx2x_dcbx_get_ets_feature(struct bnx2x *bp,
267 struct dcbx_ets_feature *ets,
268 u32 error) {
269 int i = 0;
270 u32 pg_pri_orginal_spread[DCBX_MAX_NUM_PG_BW_ENTRIES] = {0};
271 struct pg_help_data pg_help_data;
272 struct bnx2x_dcbx_cos_params *cos_params =
273 bp->dcbx_port_params.ets.cos_params;
274
275 memset(&pg_help_data, 0, sizeof(struct pg_help_data));
276
277
278 if (GET_FLAGS(error, DCBX_LOCAL_ETS_ERROR))
279 DP(NETIF_MSG_LINK, "DCBX_LOCAL_ETS_ERROR\n");
280
281
282 /* Clean up old settings of ets on COS */
283 for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params) ; i++) {
284 cos_params[i].pauseable = false;
285 cos_params[i].strict = BNX2X_DCBX_STRICT_INVALID;
286 cos_params[i].bw_tbl = DCBX_INVALID_COS_BW;
287 cos_params[i].pri_bitmask = 0;
288 }
289
290 if (bp->dcbx_port_params.app.enabled &&
291 !GET_FLAGS(error, DCBX_LOCAL_ETS_ERROR) &&
292 ets->enabled) {
293 DP(NETIF_MSG_LINK, "DCBX_LOCAL_ETS_ENABLE\n");
294 bp->dcbx_port_params.ets.enabled = true;
295
296 bnx2x_dcbx_get_ets_pri_pg_tbl(bp,
297 pg_pri_orginal_spread,
298 ets->pri_pg_tbl);
299
300 bnx2x_dcbx_get_num_pg_traf_type(bp,
301 pg_pri_orginal_spread,
302 &pg_help_data);
303
304 bnx2x_dcbx_fill_cos_params(bp, &pg_help_data,
305 ets, pg_pri_orginal_spread);
306
307 } else {
308 DP(NETIF_MSG_LINK, "DCBX_LOCAL_ETS_DISABLED\n");
309 bp->dcbx_port_params.ets.enabled = false;
310 ets->pri_pg_tbl[0] = 0;
311
312 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES ; i++)
313 DCBX_PG_BW_SET(ets->pg_bw_tbl, i, 1);
314 }
315 }
316
317 static void bnx2x_dcbx_get_pfc_feature(struct bnx2x *bp,
318 struct dcbx_pfc_feature *pfc, u32 error)
319 {
320
321 if (GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR))
322 DP(NETIF_MSG_LINK, "DCBX_LOCAL_PFC_ERROR\n");
323
324 if (bp->dcbx_port_params.app.enabled &&
325 !GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR | DCBX_LOCAL_PFC_MISMATCH) &&
326 pfc->enabled) {
327 bp->dcbx_port_params.pfc.enabled = true;
328 bp->dcbx_port_params.pfc.priority_non_pauseable_mask =
329 ~(pfc->pri_en_bitmap);
330 } else {
331 DP(NETIF_MSG_LINK, "DCBX_LOCAL_PFC_DISABLED\n");
332 bp->dcbx_port_params.pfc.enabled = false;
333 bp->dcbx_port_params.pfc.priority_non_pauseable_mask = 0;
334 }
335 }
336
337 /* maps unmapped priorities to to the same COS as L2 */
338 static void bnx2x_dcbx_map_nw(struct bnx2x *bp)
339 {
340 int i;
341 u32 unmapped = (1 << MAX_PFC_PRIORITIES) - 1; /* all ones */
342 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
343 u32 nw_prio = 1 << ttp[LLFC_TRAFFIC_TYPE_NW];
344 struct bnx2x_dcbx_cos_params *cos_params =
345 bp->dcbx_port_params.ets.cos_params;
346
347 /* get unmapped priorities by clearing mapped bits */
348 for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
349 unmapped &= ~(1 << ttp[i]);
350
351 /* find cos for nw prio and extend it with unmapped */
352 for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params); i++) {
353 if (cos_params[i].pri_bitmask & nw_prio) {
354 /* extend the bitmask with unmapped */
355 DP(NETIF_MSG_LINK,
356 "cos %d extended with 0x%08x\n", i, unmapped);
357 cos_params[i].pri_bitmask |= unmapped;
358 break;
359 }
360 }
361 }
362
363 static void bnx2x_get_dcbx_drv_param(struct bnx2x *bp,
364 struct dcbx_features *features,
365 u32 error)
366 {
367 bnx2x_dcbx_get_ap_feature(bp, &features->app, error);
368
369 bnx2x_dcbx_get_pfc_feature(bp, &features->pfc, error);
370
371 bnx2x_dcbx_get_ets_feature(bp, &features->ets, error);
372
373 bnx2x_dcbx_map_nw(bp);
374 }
375
376 #define DCBX_LOCAL_MIB_MAX_TRY_READ (100)
377 static int bnx2x_dcbx_read_mib(struct bnx2x *bp,
378 u32 *base_mib_addr,
379 u32 offset,
380 int read_mib_type)
381 {
382 int max_try_read = 0;
383 u32 mib_size, prefix_seq_num, suffix_seq_num;
384 struct lldp_remote_mib *remote_mib ;
385 struct lldp_local_mib *local_mib;
386
387
388 switch (read_mib_type) {
389 case DCBX_READ_LOCAL_MIB:
390 mib_size = sizeof(struct lldp_local_mib);
391 break;
392 case DCBX_READ_REMOTE_MIB:
393 mib_size = sizeof(struct lldp_remote_mib);
394 break;
395 default:
396 return 1; /*error*/
397 }
398
399 offset += BP_PORT(bp) * mib_size;
400
401 do {
402 bnx2x_read_data(bp, base_mib_addr, offset, mib_size);
403
404 max_try_read++;
405
406 switch (read_mib_type) {
407 case DCBX_READ_LOCAL_MIB:
408 local_mib = (struct lldp_local_mib *) base_mib_addr;
409 prefix_seq_num = local_mib->prefix_seq_num;
410 suffix_seq_num = local_mib->suffix_seq_num;
411 break;
412 case DCBX_READ_REMOTE_MIB:
413 remote_mib = (struct lldp_remote_mib *) base_mib_addr;
414 prefix_seq_num = remote_mib->prefix_seq_num;
415 suffix_seq_num = remote_mib->suffix_seq_num;
416 break;
417 default:
418 return 1; /*error*/
419 }
420 } while ((prefix_seq_num != suffix_seq_num) &&
421 (max_try_read < DCBX_LOCAL_MIB_MAX_TRY_READ));
422
423 if (max_try_read >= DCBX_LOCAL_MIB_MAX_TRY_READ) {
424 BNX2X_ERR("MIB could not be read\n");
425 return 1;
426 }
427
428 return 0;
429 }
430
431 static void bnx2x_pfc_set_pfc(struct bnx2x *bp)
432 {
433 if (bp->dcbx_port_params.pfc.enabled &&
434 !(bp->dcbx_error & DCBX_REMOTE_MIB_ERROR))
435 /*
436 * 1. Fills up common PFC structures if required
437 * 2. Configure NIG, MAC and BRB via the elink
438 */
439 bnx2x_pfc_set(bp);
440 else
441 bnx2x_pfc_clear(bp);
442 }
443
444 static int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp)
445 {
446 struct bnx2x_func_state_params func_params = {0};
447
448 func_params.f_obj = &bp->func_obj;
449 func_params.cmd = BNX2X_F_CMD_TX_STOP;
450
451 DP(NETIF_MSG_LINK, "STOP TRAFFIC\n");
452 return bnx2x_func_state_change(bp, &func_params);
453 }
454
455 static int bnx2x_dcbx_resume_hw_tx(struct bnx2x *bp)
456 {
457 struct bnx2x_func_state_params func_params = {0};
458 struct bnx2x_func_tx_start_params *tx_params =
459 &func_params.params.tx_start;
460
461 func_params.f_obj = &bp->func_obj;
462 func_params.cmd = BNX2X_F_CMD_TX_START;
463
464 bnx2x_dcbx_fw_struct(bp, tx_params);
465
466 DP(NETIF_MSG_LINK, "START TRAFFIC\n");
467 return bnx2x_func_state_change(bp, &func_params);
468 }
469
470 static void bnx2x_dcbx_2cos_limit_update_ets_config(struct bnx2x *bp)
471 {
472 struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
473 int rc = 0;
474
475 if (ets->num_of_cos == 0 || ets->num_of_cos > DCBX_COS_MAX_NUM_E2) {
476 BNX2X_ERR("Illegal number of COSes %d\n", ets->num_of_cos);
477 return;
478 }
479
480 /* valid COS entries */
481 if (ets->num_of_cos == 1) /* no ETS */
482 return;
483
484 /* sanity */
485 if (((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[0].strict) &&
486 (DCBX_INVALID_COS_BW == ets->cos_params[0].bw_tbl)) ||
487 ((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[1].strict) &&
488 (DCBX_INVALID_COS_BW == ets->cos_params[1].bw_tbl))) {
489 BNX2X_ERR("all COS should have at least bw_limit or strict"
490 "ets->cos_params[0].strict= %x"
491 "ets->cos_params[0].bw_tbl= %x"
492 "ets->cos_params[1].strict= %x"
493 "ets->cos_params[1].bw_tbl= %x",
494 ets->cos_params[0].strict,
495 ets->cos_params[0].bw_tbl,
496 ets->cos_params[1].strict,
497 ets->cos_params[1].bw_tbl);
498 return;
499 }
500 /* If we join a group and there is bw_tbl and strict then bw rules */
501 if ((DCBX_INVALID_COS_BW != ets->cos_params[0].bw_tbl) &&
502 (DCBX_INVALID_COS_BW != ets->cos_params[1].bw_tbl)) {
503 u32 bw_tbl_0 = ets->cos_params[0].bw_tbl;
504 u32 bw_tbl_1 = ets->cos_params[1].bw_tbl;
505 /* Do not allow 0-100 configuration
506 * since PBF does not support it
507 * force 1-99 instead
508 */
509 if (bw_tbl_0 == 0) {
510 bw_tbl_0 = 1;
511 bw_tbl_1 = 99;
512 } else if (bw_tbl_1 == 0) {
513 bw_tbl_1 = 1;
514 bw_tbl_0 = 99;
515 }
516
517 bnx2x_ets_bw_limit(&bp->link_params, bw_tbl_0, bw_tbl_1);
518 } else {
519 if (ets->cos_params[0].strict == BNX2X_DCBX_STRICT_COS_HIGHEST)
520 rc = bnx2x_ets_strict(&bp->link_params, 0);
521 else if (ets->cos_params[1].strict
522 == BNX2X_DCBX_STRICT_COS_HIGHEST)
523 rc = bnx2x_ets_strict(&bp->link_params, 1);
524 if (rc)
525 BNX2X_ERR("update_ets_params failed\n");
526 }
527 }
528
529 /*
530 * In E3B0 the configuration may have more than 2 COS.
531 */
532 void bnx2x_dcbx_update_ets_config(struct bnx2x *bp)
533 {
534 struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
535 struct bnx2x_ets_params ets_params = { 0 };
536 u8 i;
537
538 ets_params.num_of_cos = ets->num_of_cos;
539
540 for (i = 0; i < ets->num_of_cos; i++) {
541 /* COS is SP */
542 if (ets->cos_params[i].strict != BNX2X_DCBX_STRICT_INVALID) {
543 if (ets->cos_params[i].bw_tbl != DCBX_INVALID_COS_BW) {
544 BNX2X_ERR("COS can't be not BW and not SP\n");
545 return;
546 }
547
548 ets_params.cos[i].state = bnx2x_cos_state_strict;
549 ets_params.cos[i].params.sp_params.pri =
550 ets->cos_params[i].strict;
551 } else { /* COS is BW */
552 if (ets->cos_params[i].bw_tbl == DCBX_INVALID_COS_BW) {
553 BNX2X_ERR("COS can't be not BW and not SP\n");
554 return;
555 }
556 ets_params.cos[i].state = bnx2x_cos_state_bw;
557 ets_params.cos[i].params.bw_params.bw =
558 (u8)ets->cos_params[i].bw_tbl;
559 }
560 }
561
562 /* Configure the ETS in HW */
563 if (bnx2x_ets_e3b0_config(&bp->link_params, &bp->link_vars,
564 &ets_params)) {
565 BNX2X_ERR("bnx2x_ets_e3b0_config failed\n");
566 bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
567 }
568 }
569
570 static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp)
571 {
572 bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
573
574 if (!bp->dcbx_port_params.ets.enabled ||
575 (bp->dcbx_error & DCBX_REMOTE_MIB_ERROR))
576 return;
577
578 if (CHIP_IS_E3B0(bp))
579 bnx2x_dcbx_update_ets_config(bp);
580 else
581 bnx2x_dcbx_2cos_limit_update_ets_config(bp);
582 }
583
584 #ifdef BCM_DCBNL
585 static int bnx2x_dcbx_read_shmem_remote_mib(struct bnx2x *bp)
586 {
587 struct lldp_remote_mib remote_mib = {0};
588 u32 dcbx_remote_mib_offset = SHMEM2_RD(bp, dcbx_remote_mib_offset);
589 int rc;
590
591 DP(NETIF_MSG_LINK, "dcbx_remote_mib_offset 0x%x\n",
592 dcbx_remote_mib_offset);
593
594 if (SHMEM_DCBX_REMOTE_MIB_NONE == dcbx_remote_mib_offset) {
595 BNX2X_ERR("FW doesn't support dcbx_remote_mib_offset\n");
596 return -EINVAL;
597 }
598
599 rc = bnx2x_dcbx_read_mib(bp, (u32 *)&remote_mib, dcbx_remote_mib_offset,
600 DCBX_READ_REMOTE_MIB);
601
602 if (rc) {
603 BNX2X_ERR("Faild to read remote mib from FW\n");
604 return rc;
605 }
606
607 /* save features and flags */
608 bp->dcbx_remote_feat = remote_mib.features;
609 bp->dcbx_remote_flags = remote_mib.flags;
610 return 0;
611 }
612 #endif
613
614 static int bnx2x_dcbx_read_shmem_neg_results(struct bnx2x *bp)
615 {
616 struct lldp_local_mib local_mib = {0};
617 u32 dcbx_neg_res_offset = SHMEM2_RD(bp, dcbx_neg_res_offset);
618 int rc;
619
620 DP(NETIF_MSG_LINK, "dcbx_neg_res_offset 0x%x\n", dcbx_neg_res_offset);
621
622 if (SHMEM_DCBX_NEG_RES_NONE == dcbx_neg_res_offset) {
623 BNX2X_ERR("FW doesn't support dcbx_neg_res_offset\n");
624 return -EINVAL;
625 }
626
627 rc = bnx2x_dcbx_read_mib(bp, (u32 *)&local_mib, dcbx_neg_res_offset,
628 DCBX_READ_LOCAL_MIB);
629
630 if (rc) {
631 BNX2X_ERR("Faild to read local mib from FW\n");
632 return rc;
633 }
634
635 /* save features and error */
636 bp->dcbx_local_feat = local_mib.features;
637 bp->dcbx_error = local_mib.error;
638 return 0;
639 }
640
641
642 #ifdef BCM_DCBNL
643 static inline
644 u8 bnx2x_dcbx_dcbnl_app_up(struct dcbx_app_priority_entry *ent)
645 {
646 u8 pri;
647
648 /* Choose the highest priority */
649 for (pri = MAX_PFC_PRIORITIES - 1; pri > 0; pri--)
650 if (ent->pri_bitmap & (1 << pri))
651 break;
652 return pri;
653 }
654
655 static inline
656 u8 bnx2x_dcbx_dcbnl_app_idtype(struct dcbx_app_priority_entry *ent)
657 {
658 return ((ent->appBitfield & DCBX_APP_ENTRY_SF_MASK) ==
659 DCBX_APP_SF_PORT) ? DCB_APP_IDTYPE_PORTNUM :
660 DCB_APP_IDTYPE_ETHTYPE;
661 }
662
663 int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall)
664 {
665 int i, err = 0;
666
667 for (i = 0; i < DCBX_MAX_APP_PROTOCOL && err == 0; i++) {
668 struct dcbx_app_priority_entry *ent =
669 &bp->dcbx_local_feat.app.app_pri_tbl[i];
670
671 if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
672 u8 up = bnx2x_dcbx_dcbnl_app_up(ent);
673
674 /* avoid invalid user-priority */
675 if (up) {
676 struct dcb_app app;
677 app.selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
678 app.protocol = ent->app_id;
679 app.priority = delall ? 0 : up;
680 err = dcb_setapp(bp->dev, &app);
681 }
682 }
683 }
684 return err;
685 }
686 #endif
687
688 static inline void bnx2x_dcbx_update_tc_mapping(struct bnx2x *bp)
689 {
690 u8 prio, cos;
691 for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++) {
692 for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
693 if (bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask
694 & (1 << prio)) {
695 bp->prio_to_cos[prio] = cos;
696 DP(NETIF_MSG_LINK,
697 "tx_mapping %d --> %d\n", prio, cos);
698 }
699 }
700 }
701
702 /* setup tc must be called under rtnl lock, but we can't take it here
703 * as we are handling an attetntion on a work queue which must be
704 * flushed at some rtnl-locked contexts (e.g. if down)
705 */
706 if (!test_and_set_bit(BNX2X_SP_RTNL_SETUP_TC, &bp->sp_rtnl_state))
707 schedule_delayed_work(&bp->sp_rtnl_task, 0);
708 }
709
710 void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state)
711 {
712 switch (state) {
713 case BNX2X_DCBX_STATE_NEG_RECEIVED:
714 {
715 DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_NEG_RECEIVED\n");
716 #ifdef BCM_DCBNL
717 /**
718 * Delete app tlvs from dcbnl before reading new
719 * negotiation results
720 */
721 bnx2x_dcbnl_update_applist(bp, true);
722
723 /* Read rmeote mib if dcbx is in the FW */
724 if (bnx2x_dcbx_read_shmem_remote_mib(bp))
725 return;
726 #endif
727 /* Read neg results if dcbx is in the FW */
728 if (bnx2x_dcbx_read_shmem_neg_results(bp))
729 return;
730
731 bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
732 bp->dcbx_error);
733
734 bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
735 bp->dcbx_error);
736
737 /* mark DCBX result for PMF migration */
738 bnx2x_update_drv_flags(bp,
739 1 << DRV_FLAGS_DCB_CONFIGURED,
740 1);
741 #ifdef BCM_DCBNL
742 /*
743 * Add new app tlvs to dcbnl
744 */
745 bnx2x_dcbnl_update_applist(bp, false);
746 #endif
747 /*
748 * reconfigure the netdevice with the results of the new
749 * dcbx negotiation.
750 */
751 bnx2x_dcbx_update_tc_mapping(bp);
752
753 /*
754 * allow other funtions to update their netdevices
755 * accordingly
756 */
757 if (IS_MF(bp))
758 bnx2x_link_sync_notify(bp);
759
760 bnx2x_dcbx_stop_hw_tx(bp);
761
762 return;
763 }
764 case BNX2X_DCBX_STATE_TX_PAUSED:
765 DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_TX_PAUSED\n");
766 bnx2x_pfc_set_pfc(bp);
767
768 bnx2x_dcbx_update_ets_params(bp);
769 bnx2x_dcbx_resume_hw_tx(bp);
770
771 return;
772 case BNX2X_DCBX_STATE_TX_RELEASED:
773 DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_TX_RELEASED\n");
774 bnx2x_fw_command(bp, DRV_MSG_CODE_DCBX_PMF_DRV_OK, 0);
775 #ifdef BCM_DCBNL
776 /*
777 * Send a notification for the new negotiated parameters
778 */
779 dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
780 #endif
781 return;
782 default:
783 BNX2X_ERR("Unknown DCBX_STATE\n");
784 }
785 }
786
787 #define LLDP_ADMIN_MIB_OFFSET(bp) (PORT_MAX*sizeof(struct lldp_params) + \
788 BP_PORT(bp)*sizeof(struct lldp_admin_mib))
789
790 static void bnx2x_dcbx_admin_mib_updated_params(struct bnx2x *bp,
791 u32 dcbx_lldp_params_offset)
792 {
793 struct lldp_admin_mib admin_mib;
794 u32 i, other_traf_type = PREDEFINED_APP_IDX_MAX, traf_type = 0;
795 u32 offset = dcbx_lldp_params_offset + LLDP_ADMIN_MIB_OFFSET(bp);
796
797 /*shortcuts*/
798 struct dcbx_features *af = &admin_mib.features;
799 struct bnx2x_config_dcbx_params *dp = &bp->dcbx_config_params;
800
801 memset(&admin_mib, 0, sizeof(struct lldp_admin_mib));
802
803 /* Read the data first */
804 bnx2x_read_data(bp, (u32 *)&admin_mib, offset,
805 sizeof(struct lldp_admin_mib));
806
807 if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON)
808 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
809 else
810 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
811
812 if (dp->overwrite_settings == BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE) {
813
814 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_CEE_VERSION_MASK);
815 admin_mib.ver_cfg_flags |=
816 (dp->admin_dcbx_version << DCBX_CEE_VERSION_SHIFT) &
817 DCBX_CEE_VERSION_MASK;
818
819 af->ets.enabled = (u8)dp->admin_ets_enable;
820
821 af->pfc.enabled = (u8)dp->admin_pfc_enable;
822
823 /* FOR IEEE dp->admin_tc_supported_tx_enable */
824 if (dp->admin_ets_configuration_tx_enable)
825 SET_FLAGS(admin_mib.ver_cfg_flags,
826 DCBX_ETS_CONFIG_TX_ENABLED);
827 else
828 RESET_FLAGS(admin_mib.ver_cfg_flags,
829 DCBX_ETS_CONFIG_TX_ENABLED);
830 /* For IEEE admin_ets_recommendation_tx_enable */
831 if (dp->admin_pfc_tx_enable)
832 SET_FLAGS(admin_mib.ver_cfg_flags,
833 DCBX_PFC_CONFIG_TX_ENABLED);
834 else
835 RESET_FLAGS(admin_mib.ver_cfg_flags,
836 DCBX_PFC_CONFIG_TX_ENABLED);
837
838 if (dp->admin_application_priority_tx_enable)
839 SET_FLAGS(admin_mib.ver_cfg_flags,
840 DCBX_APP_CONFIG_TX_ENABLED);
841 else
842 RESET_FLAGS(admin_mib.ver_cfg_flags,
843 DCBX_APP_CONFIG_TX_ENABLED);
844
845 if (dp->admin_ets_willing)
846 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
847 else
848 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
849 /* For IEEE admin_ets_reco_valid */
850 if (dp->admin_pfc_willing)
851 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
852 else
853 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
854
855 if (dp->admin_app_priority_willing)
856 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
857 else
858 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
859
860 for (i = 0 ; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++) {
861 DCBX_PG_BW_SET(af->ets.pg_bw_tbl, i,
862 (u8)dp->admin_configuration_bw_precentage[i]);
863
864 DP(NETIF_MSG_LINK, "pg_bw_tbl[%d] = %02x\n",
865 i, DCBX_PG_BW_GET(af->ets.pg_bw_tbl, i));
866 }
867
868 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
869 DCBX_PRI_PG_SET(af->ets.pri_pg_tbl, i,
870 (u8)dp->admin_configuration_ets_pg[i]);
871
872 DP(NETIF_MSG_LINK, "pri_pg_tbl[%d] = %02x\n",
873 i, DCBX_PRI_PG_GET(af->ets.pri_pg_tbl, i));
874 }
875
876 /*For IEEE admin_recommendation_bw_precentage
877 *For IEEE admin_recommendation_ets_pg */
878 af->pfc.pri_en_bitmap = (u8)dp->admin_pfc_bitmap;
879 for (i = 0; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) {
880 if (dp->admin_priority_app_table[i].valid) {
881 struct bnx2x_admin_priority_app_table *table =
882 dp->admin_priority_app_table;
883 if ((ETH_TYPE_FCOE == table[i].app_id) &&
884 (TRAFFIC_TYPE_ETH == table[i].traffic_type))
885 traf_type = FCOE_APP_IDX;
886 else if ((TCP_PORT_ISCSI == table[i].app_id) &&
887 (TRAFFIC_TYPE_PORT == table[i].traffic_type))
888 traf_type = ISCSI_APP_IDX;
889 else
890 traf_type = other_traf_type++;
891
892 af->app.app_pri_tbl[traf_type].app_id =
893 table[i].app_id;
894
895 af->app.app_pri_tbl[traf_type].pri_bitmap =
896 (u8)(1 << table[i].priority);
897
898 af->app.app_pri_tbl[traf_type].appBitfield =
899 (DCBX_APP_ENTRY_VALID);
900
901 af->app.app_pri_tbl[traf_type].appBitfield |=
902 (TRAFFIC_TYPE_ETH == table[i].traffic_type) ?
903 DCBX_APP_SF_ETH_TYPE : DCBX_APP_SF_PORT;
904 }
905 }
906
907 af->app.default_pri = (u8)dp->admin_default_priority;
908
909 }
910
911 /* Write the data. */
912 bnx2x_write_data(bp, (u32 *)&admin_mib, offset,
913 sizeof(struct lldp_admin_mib));
914
915 }
916
917 void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled)
918 {
919 if (!CHIP_IS_E1x(bp)) {
920 bp->dcb_state = dcb_on;
921 bp->dcbx_enabled = dcbx_enabled;
922 } else {
923 bp->dcb_state = false;
924 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_INVALID;
925 }
926 DP(NETIF_MSG_LINK, "DCB state [%s:%s]\n",
927 dcb_on ? "ON" : "OFF",
928 dcbx_enabled == BNX2X_DCBX_ENABLED_OFF ? "user-mode" :
929 dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF ? "on-chip static" :
930 dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON ?
931 "on-chip with negotiation" : "invalid");
932 }
933
934 void bnx2x_dcbx_init_params(struct bnx2x *bp)
935 {
936 bp->dcbx_config_params.admin_dcbx_version = 0x0; /* 0 - CEE; 1 - IEEE */
937 bp->dcbx_config_params.admin_ets_willing = 1;
938 bp->dcbx_config_params.admin_pfc_willing = 1;
939 bp->dcbx_config_params.overwrite_settings = 1;
940 bp->dcbx_config_params.admin_ets_enable = 1;
941 bp->dcbx_config_params.admin_pfc_enable = 1;
942 bp->dcbx_config_params.admin_tc_supported_tx_enable = 1;
943 bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
944 bp->dcbx_config_params.admin_pfc_tx_enable = 1;
945 bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
946 bp->dcbx_config_params.admin_ets_reco_valid = 1;
947 bp->dcbx_config_params.admin_app_priority_willing = 1;
948 bp->dcbx_config_params.admin_configuration_bw_precentage[0] = 00;
949 bp->dcbx_config_params.admin_configuration_bw_precentage[1] = 50;
950 bp->dcbx_config_params.admin_configuration_bw_precentage[2] = 50;
951 bp->dcbx_config_params.admin_configuration_bw_precentage[3] = 0;
952 bp->dcbx_config_params.admin_configuration_bw_precentage[4] = 0;
953 bp->dcbx_config_params.admin_configuration_bw_precentage[5] = 0;
954 bp->dcbx_config_params.admin_configuration_bw_precentage[6] = 0;
955 bp->dcbx_config_params.admin_configuration_bw_precentage[7] = 0;
956 bp->dcbx_config_params.admin_configuration_ets_pg[0] = 1;
957 bp->dcbx_config_params.admin_configuration_ets_pg[1] = 0;
958 bp->dcbx_config_params.admin_configuration_ets_pg[2] = 0;
959 bp->dcbx_config_params.admin_configuration_ets_pg[3] = 2;
960 bp->dcbx_config_params.admin_configuration_ets_pg[4] = 0;
961 bp->dcbx_config_params.admin_configuration_ets_pg[5] = 0;
962 bp->dcbx_config_params.admin_configuration_ets_pg[6] = 0;
963 bp->dcbx_config_params.admin_configuration_ets_pg[7] = 0;
964 bp->dcbx_config_params.admin_recommendation_bw_precentage[0] = 0;
965 bp->dcbx_config_params.admin_recommendation_bw_precentage[1] = 1;
966 bp->dcbx_config_params.admin_recommendation_bw_precentage[2] = 2;
967 bp->dcbx_config_params.admin_recommendation_bw_precentage[3] = 0;
968 bp->dcbx_config_params.admin_recommendation_bw_precentage[4] = 7;
969 bp->dcbx_config_params.admin_recommendation_bw_precentage[5] = 5;
970 bp->dcbx_config_params.admin_recommendation_bw_precentage[6] = 6;
971 bp->dcbx_config_params.admin_recommendation_bw_precentage[7] = 7;
972 bp->dcbx_config_params.admin_recommendation_ets_pg[0] = 0;
973 bp->dcbx_config_params.admin_recommendation_ets_pg[1] = 1;
974 bp->dcbx_config_params.admin_recommendation_ets_pg[2] = 2;
975 bp->dcbx_config_params.admin_recommendation_ets_pg[3] = 3;
976 bp->dcbx_config_params.admin_recommendation_ets_pg[4] = 4;
977 bp->dcbx_config_params.admin_recommendation_ets_pg[5] = 5;
978 bp->dcbx_config_params.admin_recommendation_ets_pg[6] = 6;
979 bp->dcbx_config_params.admin_recommendation_ets_pg[7] = 7;
980 bp->dcbx_config_params.admin_pfc_bitmap = 0x8; /* FCoE(3) enable */
981 bp->dcbx_config_params.admin_priority_app_table[0].valid = 1;
982 bp->dcbx_config_params.admin_priority_app_table[1].valid = 1;
983 bp->dcbx_config_params.admin_priority_app_table[2].valid = 0;
984 bp->dcbx_config_params.admin_priority_app_table[3].valid = 0;
985 bp->dcbx_config_params.admin_priority_app_table[0].priority = 3;
986 bp->dcbx_config_params.admin_priority_app_table[1].priority = 0;
987 bp->dcbx_config_params.admin_priority_app_table[2].priority = 0;
988 bp->dcbx_config_params.admin_priority_app_table[3].priority = 0;
989 bp->dcbx_config_params.admin_priority_app_table[0].traffic_type = 0;
990 bp->dcbx_config_params.admin_priority_app_table[1].traffic_type = 1;
991 bp->dcbx_config_params.admin_priority_app_table[2].traffic_type = 0;
992 bp->dcbx_config_params.admin_priority_app_table[3].traffic_type = 0;
993 bp->dcbx_config_params.admin_priority_app_table[0].app_id = 0x8906;
994 bp->dcbx_config_params.admin_priority_app_table[1].app_id = 3260;
995 bp->dcbx_config_params.admin_priority_app_table[2].app_id = 0;
996 bp->dcbx_config_params.admin_priority_app_table[3].app_id = 0;
997 bp->dcbx_config_params.admin_default_priority =
998 bp->dcbx_config_params.admin_priority_app_table[1].priority;
999 }
1000
1001 void bnx2x_dcbx_init(struct bnx2x *bp)
1002 {
1003 u32 dcbx_lldp_params_offset = SHMEM_LLDP_DCBX_PARAMS_NONE;
1004
1005 if (bp->dcbx_enabled <= 0)
1006 return;
1007
1008 /* validate:
1009 * chip of good for dcbx version,
1010 * dcb is wanted
1011 * the function is pmf
1012 * shmem2 contains DCBX support fields
1013 */
1014 DP(NETIF_MSG_LINK, "dcb_state %d bp->port.pmf %d\n",
1015 bp->dcb_state, bp->port.pmf);
1016
1017 if (bp->dcb_state == BNX2X_DCB_STATE_ON && bp->port.pmf &&
1018 SHMEM2_HAS(bp, dcbx_lldp_params_offset)) {
1019 dcbx_lldp_params_offset =
1020 SHMEM2_RD(bp, dcbx_lldp_params_offset);
1021
1022 DP(NETIF_MSG_LINK, "dcbx_lldp_params_offset 0x%x\n",
1023 dcbx_lldp_params_offset);
1024
1025 bnx2x_update_drv_flags(bp, 1 << DRV_FLAGS_DCB_CONFIGURED, 0);
1026
1027 if (SHMEM_LLDP_DCBX_PARAMS_NONE != dcbx_lldp_params_offset) {
1028 bnx2x_dcbx_admin_mib_updated_params(bp,
1029 dcbx_lldp_params_offset);
1030
1031 /* Let HW start negotiation */
1032 bnx2x_fw_command(bp,
1033 DRV_MSG_CODE_DCBX_ADMIN_PMF_MSG, 0);
1034 }
1035 }
1036 }
1037 static void
1038 bnx2x_dcbx_print_cos_params(struct bnx2x *bp,
1039 struct bnx2x_func_tx_start_params *pfc_fw_cfg)
1040 {
1041 u8 pri = 0;
1042 u8 cos = 0;
1043
1044 DP(NETIF_MSG_LINK,
1045 "pfc_fw_cfg->dcb_version %x\n", pfc_fw_cfg->dcb_version);
1046 DP(NETIF_MSG_LINK,
1047 "pdev->params.dcbx_port_params.pfc."
1048 "priority_non_pauseable_mask %x\n",
1049 bp->dcbx_port_params.pfc.priority_non_pauseable_mask);
1050
1051 for (cos = 0 ; cos < bp->dcbx_port_params.ets.num_of_cos ; cos++) {
1052 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets."
1053 "cos_params[%d].pri_bitmask %x\n", cos,
1054 bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask);
1055
1056 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets."
1057 "cos_params[%d].bw_tbl %x\n", cos,
1058 bp->dcbx_port_params.ets.cos_params[cos].bw_tbl);
1059
1060 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets."
1061 "cos_params[%d].strict %x\n", cos,
1062 bp->dcbx_port_params.ets.cos_params[cos].strict);
1063
1064 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets."
1065 "cos_params[%d].pauseable %x\n", cos,
1066 bp->dcbx_port_params.ets.cos_params[cos].pauseable);
1067 }
1068
1069 for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
1070 DP(NETIF_MSG_LINK,
1071 "pfc_fw_cfg->traffic_type_to_priority_cos[%d]."
1072 "priority %x\n", pri,
1073 pfc_fw_cfg->traffic_type_to_priority_cos[pri].priority);
1074
1075 DP(NETIF_MSG_LINK,
1076 "pfc_fw_cfg->traffic_type_to_priority_cos[%d].cos %x\n",
1077 pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].cos);
1078 }
1079 }
1080
1081 /* fills help_data according to pg_info */
1082 static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp,
1083 u32 *pg_pri_orginal_spread,
1084 struct pg_help_data *help_data)
1085 {
1086 bool pg_found = false;
1087 u32 i, traf_type, add_traf_type, add_pg;
1088 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1089 struct pg_entry_help_data *data = help_data->data; /*shotcut*/
1090
1091 /* Set to invalid */
1092 for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
1093 data[i].pg = DCBX_ILLEGAL_PG;
1094
1095 for (add_traf_type = 0;
1096 add_traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX; add_traf_type++) {
1097 pg_found = false;
1098 if (ttp[add_traf_type] < MAX_PFC_PRIORITIES) {
1099 add_pg = (u8)pg_pri_orginal_spread[ttp[add_traf_type]];
1100 for (traf_type = 0;
1101 traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1102 traf_type++) {
1103 if (data[traf_type].pg == add_pg) {
1104 if (!(data[traf_type].pg_priority &
1105 (1 << ttp[add_traf_type])))
1106 data[traf_type].
1107 num_of_dif_pri++;
1108 data[traf_type].pg_priority |=
1109 (1 << ttp[add_traf_type]);
1110 pg_found = true;
1111 break;
1112 }
1113 }
1114 if (false == pg_found) {
1115 data[help_data->num_of_pg].pg = add_pg;
1116 data[help_data->num_of_pg].pg_priority =
1117 (1 << ttp[add_traf_type]);
1118 data[help_data->num_of_pg].num_of_dif_pri = 1;
1119 help_data->num_of_pg++;
1120 }
1121 }
1122 DP(NETIF_MSG_LINK,
1123 "add_traf_type %d pg_found %s num_of_pg %d\n",
1124 add_traf_type, (false == pg_found) ? "NO" : "YES",
1125 help_data->num_of_pg);
1126 }
1127 }
1128
1129 static void bnx2x_dcbx_ets_disabled_entry_data(struct bnx2x *bp,
1130 struct cos_help_data *cos_data,
1131 u32 pri_join_mask)
1132 {
1133 /* Only one priority than only one COS */
1134 cos_data->data[0].pausable =
1135 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1136 cos_data->data[0].pri_join_mask = pri_join_mask;
1137 cos_data->data[0].cos_bw = 100;
1138 cos_data->num_of_cos = 1;
1139 }
1140
1141 static inline void bnx2x_dcbx_add_to_cos_bw(struct bnx2x *bp,
1142 struct cos_entry_help_data *data,
1143 u8 pg_bw)
1144 {
1145 if (data->cos_bw == DCBX_INVALID_COS_BW)
1146 data->cos_bw = pg_bw;
1147 else
1148 data->cos_bw += pg_bw;
1149 }
1150
1151 static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp,
1152 struct cos_help_data *cos_data,
1153 u32 *pg_pri_orginal_spread,
1154 struct dcbx_ets_feature *ets)
1155 {
1156 u32 pri_tested = 0;
1157 u8 i = 0;
1158 u8 entry = 0;
1159 u8 pg_entry = 0;
1160 u8 num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1161
1162 cos_data->data[0].pausable = true;
1163 cos_data->data[1].pausable = false;
1164 cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
1165
1166 for (i = 0 ; i < num_of_pri ; i++) {
1167 pri_tested = 1 << bp->dcbx_port_params.
1168 app.traffic_type_priority[i];
1169
1170 if (pri_tested & DCBX_PFC_PRI_NON_PAUSE_MASK(bp)) {
1171 cos_data->data[1].pri_join_mask |= pri_tested;
1172 entry = 1;
1173 } else {
1174 cos_data->data[0].pri_join_mask |= pri_tested;
1175 entry = 0;
1176 }
1177 pg_entry = (u8)pg_pri_orginal_spread[bp->dcbx_port_params.
1178 app.traffic_type_priority[i]];
1179 /* There can be only one strict pg */
1180 if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES)
1181 bnx2x_dcbx_add_to_cos_bw(bp, &cos_data->data[entry],
1182 DCBX_PG_BW_GET(ets->pg_bw_tbl, pg_entry));
1183 else
1184 /* If we join a group and one is strict
1185 * than the bw rulls */
1186 cos_data->data[entry].strict =
1187 BNX2X_DCBX_STRICT_COS_HIGHEST;
1188 }
1189 if ((0 == cos_data->data[0].pri_join_mask) &&
1190 (0 == cos_data->data[1].pri_join_mask))
1191 BNX2X_ERR("dcbx error: Both groups must have priorities\n");
1192 }
1193
1194
1195 #ifndef POWER_OF_2
1196 #define POWER_OF_2(x) ((0 != x) && (0 == (x & (x-1))))
1197 #endif
1198
1199 static void bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(struct bnx2x *bp,
1200 struct pg_help_data *pg_help_data,
1201 struct cos_help_data *cos_data,
1202 u32 pri_join_mask,
1203 u8 num_of_dif_pri)
1204 {
1205 u8 i = 0;
1206 u32 pri_tested = 0;
1207 u32 pri_mask_without_pri = 0;
1208 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1209 /*debug*/
1210 if (num_of_dif_pri == 1) {
1211 bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data, pri_join_mask);
1212 return;
1213 }
1214 /* single priority group */
1215 if (pg_help_data->data[0].pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1216 /* If there are both pauseable and non-pauseable priorities,
1217 * the pauseable priorities go to the first queue and
1218 * the non-pauseable priorities go to the second queue.
1219 */
1220 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1221 /* Pauseable */
1222 cos_data->data[0].pausable = true;
1223 /* Non pauseable.*/
1224 cos_data->data[1].pausable = false;
1225
1226 if (2 == num_of_dif_pri) {
1227 cos_data->data[0].cos_bw = 50;
1228 cos_data->data[1].cos_bw = 50;
1229 }
1230
1231 if (3 == num_of_dif_pri) {
1232 if (POWER_OF_2(DCBX_PFC_PRI_GET_PAUSE(bp,
1233 pri_join_mask))) {
1234 cos_data->data[0].cos_bw = 33;
1235 cos_data->data[1].cos_bw = 67;
1236 } else {
1237 cos_data->data[0].cos_bw = 67;
1238 cos_data->data[1].cos_bw = 33;
1239 }
1240 }
1241
1242 } else if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask)) {
1243 /* If there are only pauseable priorities,
1244 * then one/two priorities go to the first queue
1245 * and one priority goes to the second queue.
1246 */
1247 if (2 == num_of_dif_pri) {
1248 cos_data->data[0].cos_bw = 50;
1249 cos_data->data[1].cos_bw = 50;
1250 } else {
1251 cos_data->data[0].cos_bw = 67;
1252 cos_data->data[1].cos_bw = 33;
1253 }
1254 cos_data->data[1].pausable = true;
1255 cos_data->data[0].pausable = true;
1256 /* All priorities except FCOE */
1257 cos_data->data[0].pri_join_mask = (pri_join_mask &
1258 ((u8)~(1 << ttp[LLFC_TRAFFIC_TYPE_FCOE])));
1259 /* Only FCOE priority.*/
1260 cos_data->data[1].pri_join_mask =
1261 (1 << ttp[LLFC_TRAFFIC_TYPE_FCOE]);
1262 } else
1263 /* If there are only non-pauseable priorities,
1264 * they will all go to the same queue.
1265 */
1266 bnx2x_dcbx_ets_disabled_entry_data(bp,
1267 cos_data, pri_join_mask);
1268 } else {
1269 /* priority group which is not BW limited (PG#15):*/
1270 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1271 /* If there are both pauseable and non-pauseable
1272 * priorities, the pauseable priorities go to the first
1273 * queue and the non-pauseable priorities
1274 * go to the second queue.
1275 */
1276 if (DCBX_PFC_PRI_GET_PAUSE(bp, pri_join_mask) >
1277 DCBX_PFC_PRI_GET_NON_PAUSE(bp, pri_join_mask)) {
1278 cos_data->data[0].strict =
1279 BNX2X_DCBX_STRICT_COS_HIGHEST;
1280 cos_data->data[1].strict =
1281 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1282 BNX2X_DCBX_STRICT_COS_HIGHEST);
1283 } else {
1284 cos_data->data[0].strict =
1285 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1286 BNX2X_DCBX_STRICT_COS_HIGHEST);
1287 cos_data->data[1].strict =
1288 BNX2X_DCBX_STRICT_COS_HIGHEST;
1289 }
1290 /* Pauseable */
1291 cos_data->data[0].pausable = true;
1292 /* Non pause-able.*/
1293 cos_data->data[1].pausable = false;
1294 } else {
1295 /* If there are only pauseable priorities or
1296 * only non-pauseable,* the lower priorities go
1297 * to the first queue and the higherpriorities go
1298 * to the second queue.
1299 */
1300 cos_data->data[0].pausable =
1301 cos_data->data[1].pausable =
1302 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1303
1304 for (i = 0 ; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++) {
1305 pri_tested = 1 << bp->dcbx_port_params.
1306 app.traffic_type_priority[i];
1307 /* Remove priority tested */
1308 pri_mask_without_pri =
1309 (pri_join_mask & ((u8)(~pri_tested)));
1310 if (pri_mask_without_pri < pri_tested)
1311 break;
1312 }
1313
1314 if (i == LLFC_DRIVER_TRAFFIC_TYPE_MAX)
1315 BNX2X_ERR("Invalid value for pri_join_mask -"
1316 " could not find a priority\n");
1317
1318 cos_data->data[0].pri_join_mask = pri_mask_without_pri;
1319 cos_data->data[1].pri_join_mask = pri_tested;
1320 /* Both queues are strict priority,
1321 * and that with the highest priority
1322 * gets the highest strict priority in the arbiter.
1323 */
1324 cos_data->data[0].strict =
1325 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1326 BNX2X_DCBX_STRICT_COS_HIGHEST);
1327 cos_data->data[1].strict =
1328 BNX2X_DCBX_STRICT_COS_HIGHEST;
1329 }
1330 }
1331 }
1332
1333 static void bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
1334 struct bnx2x *bp,
1335 struct pg_help_data *pg_help_data,
1336 struct dcbx_ets_feature *ets,
1337 struct cos_help_data *cos_data,
1338 u32 *pg_pri_orginal_spread,
1339 u32 pri_join_mask,
1340 u8 num_of_dif_pri)
1341 {
1342 u8 i = 0;
1343 u8 pg[DCBX_COS_MAX_NUM_E2] = { 0 };
1344
1345 /* If there are both pauseable and non-pauseable priorities,
1346 * the pauseable priorities go to the first queue and
1347 * the non-pauseable priorities go to the second queue.
1348 */
1349 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1350 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
1351 pg_help_data->data[0].pg_priority) ||
1352 IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
1353 pg_help_data->data[1].pg_priority)) {
1354 /* If one PG contains both pauseable and
1355 * non-pauseable priorities then ETS is disabled.
1356 */
1357 bnx2x_dcbx_separate_pauseable_from_non(bp, cos_data,
1358 pg_pri_orginal_spread, ets);
1359 bp->dcbx_port_params.ets.enabled = false;
1360 return;
1361 }
1362
1363 /* Pauseable */
1364 cos_data->data[0].pausable = true;
1365 /* Non pauseable. */
1366 cos_data->data[1].pausable = false;
1367 if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp,
1368 pg_help_data->data[0].pg_priority)) {
1369 /* 0 is pauseable */
1370 cos_data->data[0].pri_join_mask =
1371 pg_help_data->data[0].pg_priority;
1372 pg[0] = pg_help_data->data[0].pg;
1373 cos_data->data[1].pri_join_mask =
1374 pg_help_data->data[1].pg_priority;
1375 pg[1] = pg_help_data->data[1].pg;
1376 } else {/* 1 is pauseable */
1377 cos_data->data[0].pri_join_mask =
1378 pg_help_data->data[1].pg_priority;
1379 pg[0] = pg_help_data->data[1].pg;
1380 cos_data->data[1].pri_join_mask =
1381 pg_help_data->data[0].pg_priority;
1382 pg[1] = pg_help_data->data[0].pg;
1383 }
1384 } else {
1385 /* If there are only pauseable priorities or
1386 * only non-pauseable, each PG goes to a queue.
1387 */
1388 cos_data->data[0].pausable = cos_data->data[1].pausable =
1389 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1390 cos_data->data[0].pri_join_mask =
1391 pg_help_data->data[0].pg_priority;
1392 pg[0] = pg_help_data->data[0].pg;
1393 cos_data->data[1].pri_join_mask =
1394 pg_help_data->data[1].pg_priority;
1395 pg[1] = pg_help_data->data[1].pg;
1396 }
1397
1398 /* There can be only one strict pg */
1399 for (i = 0 ; i < ARRAY_SIZE(pg); i++) {
1400 if (pg[i] < DCBX_MAX_NUM_PG_BW_ENTRIES)
1401 cos_data->data[i].cos_bw =
1402 DCBX_PG_BW_GET(ets->pg_bw_tbl, pg[i]);
1403 else
1404 cos_data->data[i].strict =
1405 BNX2X_DCBX_STRICT_COS_HIGHEST;
1406 }
1407 }
1408
1409 static int bnx2x_dcbx_join_pgs(
1410 struct bnx2x *bp,
1411 struct dcbx_ets_feature *ets,
1412 struct pg_help_data *pg_help_data,
1413 u8 required_num_of_pg)
1414 {
1415 u8 entry_joined = pg_help_data->num_of_pg - 1;
1416 u8 entry_removed = entry_joined + 1;
1417 u8 pg_joined = 0;
1418
1419 if (required_num_of_pg == 0 || ARRAY_SIZE(pg_help_data->data)
1420 <= pg_help_data->num_of_pg) {
1421
1422 BNX2X_ERR("required_num_of_pg can't be zero\n");
1423 return -EINVAL;
1424 }
1425
1426 while (required_num_of_pg < pg_help_data->num_of_pg) {
1427 entry_joined = pg_help_data->num_of_pg - 2;
1428 entry_removed = entry_joined + 1;
1429 /* protect index */
1430 entry_removed %= ARRAY_SIZE(pg_help_data->data);
1431
1432 pg_help_data->data[entry_joined].pg_priority |=
1433 pg_help_data->data[entry_removed].pg_priority;
1434
1435 pg_help_data->data[entry_joined].num_of_dif_pri +=
1436 pg_help_data->data[entry_removed].num_of_dif_pri;
1437
1438 if (pg_help_data->data[entry_joined].pg == DCBX_STRICT_PRI_PG ||
1439 pg_help_data->data[entry_removed].pg == DCBX_STRICT_PRI_PG)
1440 /* Entries joined strict priority rules */
1441 pg_help_data->data[entry_joined].pg =
1442 DCBX_STRICT_PRI_PG;
1443 else {
1444 /* Entries can be joined join BW */
1445 pg_joined = DCBX_PG_BW_GET(ets->pg_bw_tbl,
1446 pg_help_data->data[entry_joined].pg) +
1447 DCBX_PG_BW_GET(ets->pg_bw_tbl,
1448 pg_help_data->data[entry_removed].pg);
1449
1450 DCBX_PG_BW_SET(ets->pg_bw_tbl,
1451 pg_help_data->data[entry_joined].pg, pg_joined);
1452 }
1453 /* Joined the entries */
1454 pg_help_data->num_of_pg--;
1455 }
1456
1457 return 0;
1458 }
1459
1460 static void bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
1461 struct bnx2x *bp,
1462 struct pg_help_data *pg_help_data,
1463 struct dcbx_ets_feature *ets,
1464 struct cos_help_data *cos_data,
1465 u32 *pg_pri_orginal_spread,
1466 u32 pri_join_mask,
1467 u8 num_of_dif_pri)
1468 {
1469 u8 i = 0;
1470 u32 pri_tested = 0;
1471 u8 entry = 0;
1472 u8 pg_entry = 0;
1473 bool b_found_strict = false;
1474 u8 num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1475
1476 cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
1477 /* If there are both pauseable and non-pauseable priorities,
1478 * the pauseable priorities go to the first queue and the
1479 * non-pauseable priorities go to the second queue.
1480 */
1481 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask))
1482 bnx2x_dcbx_separate_pauseable_from_non(bp,
1483 cos_data, pg_pri_orginal_spread, ets);
1484 else {
1485 /* If two BW-limited PG-s were combined to one queue,
1486 * the BW is their sum.
1487 *
1488 * If there are only pauseable priorities or only non-pauseable,
1489 * and there are both BW-limited and non-BW-limited PG-s,
1490 * the BW-limited PG/s go to one queue and the non-BW-limited
1491 * PG/s go to the second queue.
1492 *
1493 * If there are only pauseable priorities or only non-pauseable
1494 * and all are BW limited, then two priorities go to the first
1495 * queue and one priority goes to the second queue.
1496 *
1497 * We will join this two cases:
1498 * if one is BW limited it will go to the secoend queue
1499 * otherwise the last priority will get it
1500 */
1501
1502 cos_data->data[0].pausable = cos_data->data[1].pausable =
1503 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1504
1505 for (i = 0 ; i < num_of_pri; i++) {
1506 pri_tested = 1 << bp->dcbx_port_params.
1507 app.traffic_type_priority[i];
1508 pg_entry = (u8)pg_pri_orginal_spread[bp->
1509 dcbx_port_params.app.traffic_type_priority[i]];
1510
1511 if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1512 entry = 0;
1513
1514 if (i == (num_of_pri-1) &&
1515 false == b_found_strict)
1516 /* last entry will be handled separately
1517 * If no priority is strict than last
1518 * enty goes to last queue.*/
1519 entry = 1;
1520 cos_data->data[entry].pri_join_mask |=
1521 pri_tested;
1522 bnx2x_dcbx_add_to_cos_bw(bp,
1523 &cos_data->data[entry],
1524 DCBX_PG_BW_GET(ets->pg_bw_tbl,
1525 pg_entry));
1526 } else {
1527 b_found_strict = true;
1528 cos_data->data[1].pri_join_mask |= pri_tested;
1529 /* If we join a group and one is strict
1530 * than the bw rulls */
1531 cos_data->data[1].strict =
1532 BNX2X_DCBX_STRICT_COS_HIGHEST;
1533 }
1534 }
1535 }
1536 }
1537
1538
1539 static void bnx2x_dcbx_2cos_limit_cee_fill_cos_params(struct bnx2x *bp,
1540 struct pg_help_data *help_data,
1541 struct dcbx_ets_feature *ets,
1542 struct cos_help_data *cos_data,
1543 u32 *pg_pri_orginal_spread,
1544 u32 pri_join_mask,
1545 u8 num_of_dif_pri)
1546 {
1547
1548 /* default E2 settings */
1549 cos_data->num_of_cos = DCBX_COS_MAX_NUM_E2;
1550
1551 switch (help_data->num_of_pg) {
1552 case 1:
1553 bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(
1554 bp,
1555 help_data,
1556 cos_data,
1557 pri_join_mask,
1558 num_of_dif_pri);
1559 break;
1560 case 2:
1561 bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
1562 bp,
1563 help_data,
1564 ets,
1565 cos_data,
1566 pg_pri_orginal_spread,
1567 pri_join_mask,
1568 num_of_dif_pri);
1569 break;
1570
1571 case 3:
1572 bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
1573 bp,
1574 help_data,
1575 ets,
1576 cos_data,
1577 pg_pri_orginal_spread,
1578 pri_join_mask,
1579 num_of_dif_pri);
1580 break;
1581 default:
1582 BNX2X_ERR("Wrong pg_help_data.num_of_pg\n");
1583 bnx2x_dcbx_ets_disabled_entry_data(bp,
1584 cos_data, pri_join_mask);
1585 }
1586 }
1587
1588 static int bnx2x_dcbx_spread_strict_pri(struct bnx2x *bp,
1589 struct cos_help_data *cos_data,
1590 u8 entry,
1591 u8 num_spread_of_entries,
1592 u8 strict_app_pris)
1593 {
1594 u8 strict_pri = BNX2X_DCBX_STRICT_COS_HIGHEST;
1595 u8 num_of_app_pri = MAX_PFC_PRIORITIES;
1596 u8 app_pri_bit = 0;
1597
1598 while (num_spread_of_entries && num_of_app_pri > 0) {
1599 app_pri_bit = 1 << (num_of_app_pri - 1);
1600 if (app_pri_bit & strict_app_pris) {
1601 struct cos_entry_help_data *data = &cos_data->
1602 data[entry];
1603 num_spread_of_entries--;
1604 if (num_spread_of_entries == 0) {
1605 /* last entry needed put all the entries left */
1606 data->cos_bw = DCBX_INVALID_COS_BW;
1607 data->strict = strict_pri;
1608 data->pri_join_mask = strict_app_pris;
1609 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1610 data->pri_join_mask);
1611 } else {
1612 strict_app_pris &= ~app_pri_bit;
1613
1614 data->cos_bw = DCBX_INVALID_COS_BW;
1615 data->strict = strict_pri;
1616 data->pri_join_mask = app_pri_bit;
1617 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1618 data->pri_join_mask);
1619 }
1620
1621 strict_pri =
1622 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(strict_pri);
1623 entry++;
1624 }
1625
1626 num_of_app_pri--;
1627 }
1628
1629 if (num_spread_of_entries)
1630 return -EINVAL;
1631
1632 return 0;
1633 }
1634
1635 static u8 bnx2x_dcbx_cee_fill_strict_pri(struct bnx2x *bp,
1636 struct cos_help_data *cos_data,
1637 u8 entry,
1638 u8 num_spread_of_entries,
1639 u8 strict_app_pris)
1640 {
1641
1642 if (bnx2x_dcbx_spread_strict_pri(bp, cos_data, entry,
1643 num_spread_of_entries,
1644 strict_app_pris)) {
1645 struct cos_entry_help_data *data = &cos_data->
1646 data[entry];
1647 /* Fill BW entry */
1648 data->cos_bw = DCBX_INVALID_COS_BW;
1649 data->strict = BNX2X_DCBX_STRICT_COS_HIGHEST;
1650 data->pri_join_mask = strict_app_pris;
1651 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1652 data->pri_join_mask);
1653 return 1;
1654 }
1655
1656 return num_spread_of_entries;
1657 }
1658
1659 static void bnx2x_dcbx_cee_fill_cos_params(struct bnx2x *bp,
1660 struct pg_help_data *help_data,
1661 struct dcbx_ets_feature *ets,
1662 struct cos_help_data *cos_data,
1663 u32 pri_join_mask)
1664
1665 {
1666 u8 need_num_of_entries = 0;
1667 u8 i = 0;
1668 u8 entry = 0;
1669
1670 /*
1671 * if the number of requested PG-s in CEE is greater than 3
1672 * then the results are not determined since this is a violation
1673 * of the standard.
1674 */
1675 if (help_data->num_of_pg > DCBX_COS_MAX_NUM_E3B0) {
1676 if (bnx2x_dcbx_join_pgs(bp, ets, help_data,
1677 DCBX_COS_MAX_NUM_E3B0)) {
1678 BNX2X_ERR("Unable to reduce the number of PGs -"
1679 "we will disables ETS\n");
1680 bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data,
1681 pri_join_mask);
1682 return;
1683 }
1684 }
1685
1686 for (i = 0 ; i < help_data->num_of_pg; i++) {
1687 struct pg_entry_help_data *pg = &help_data->data[i];
1688 if (pg->pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1689 struct cos_entry_help_data *data = &cos_data->
1690 data[entry];
1691 /* Fill BW entry */
1692 data->cos_bw = DCBX_PG_BW_GET(ets->pg_bw_tbl, pg->pg);
1693 data->strict = BNX2X_DCBX_STRICT_INVALID;
1694 data->pri_join_mask = pg->pg_priority;
1695 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1696 data->pri_join_mask);
1697
1698 entry++;
1699 } else {
1700 need_num_of_entries = min_t(u8,
1701 (u8)pg->num_of_dif_pri,
1702 (u8)DCBX_COS_MAX_NUM_E3B0 -
1703 help_data->num_of_pg + 1);
1704 /*
1705 * If there are still VOQ-s which have no associated PG,
1706 * then associate these VOQ-s to PG15. These PG-s will
1707 * be used for SP between priorities on PG15.
1708 */
1709 entry += bnx2x_dcbx_cee_fill_strict_pri(bp, cos_data,
1710 entry, need_num_of_entries, pg->pg_priority);
1711 }
1712 }
1713
1714 /* the entry will represent the number of COSes used */
1715 cos_data->num_of_cos = entry;
1716 }
1717 static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
1718 struct pg_help_data *help_data,
1719 struct dcbx_ets_feature *ets,
1720 u32 *pg_pri_orginal_spread)
1721 {
1722 struct cos_help_data cos_data;
1723 u8 i = 0;
1724 u32 pri_join_mask = 0;
1725 u8 num_of_dif_pri = 0;
1726
1727 memset(&cos_data, 0, sizeof(cos_data));
1728
1729 /* Validate the pg value */
1730 for (i = 0; i < help_data->num_of_pg ; i++) {
1731 if (DCBX_STRICT_PRIORITY != help_data->data[i].pg &&
1732 DCBX_MAX_NUM_PG_BW_ENTRIES <= help_data->data[i].pg)
1733 BNX2X_ERR("Invalid pg[%d] data %x\n", i,
1734 help_data->data[i].pg);
1735 pri_join_mask |= help_data->data[i].pg_priority;
1736 num_of_dif_pri += help_data->data[i].num_of_dif_pri;
1737 }
1738
1739 /* defaults */
1740 cos_data.num_of_cos = 1;
1741 for (i = 0; i < ARRAY_SIZE(cos_data.data); i++) {
1742 cos_data.data[i].pri_join_mask = 0;
1743 cos_data.data[i].pausable = false;
1744 cos_data.data[i].strict = BNX2X_DCBX_STRICT_INVALID;
1745 cos_data.data[i].cos_bw = DCBX_INVALID_COS_BW;
1746 }
1747
1748 if (CHIP_IS_E3B0(bp))
1749 bnx2x_dcbx_cee_fill_cos_params(bp, help_data, ets,
1750 &cos_data, pri_join_mask);
1751 else /* E2 + E3A0 */
1752 bnx2x_dcbx_2cos_limit_cee_fill_cos_params(bp,
1753 help_data, ets,
1754 &cos_data,
1755 pg_pri_orginal_spread,
1756 pri_join_mask,
1757 num_of_dif_pri);
1758
1759 for (i = 0; i < cos_data.num_of_cos ; i++) {
1760 struct bnx2x_dcbx_cos_params *p =
1761 &bp->dcbx_port_params.ets.cos_params[i];
1762
1763 p->strict = cos_data.data[i].strict;
1764 p->bw_tbl = cos_data.data[i].cos_bw;
1765 p->pri_bitmask = cos_data.data[i].pri_join_mask;
1766 p->pauseable = cos_data.data[i].pausable;
1767
1768 /* sanity */
1769 if (p->bw_tbl != DCBX_INVALID_COS_BW ||
1770 p->strict != BNX2X_DCBX_STRICT_INVALID) {
1771 if (p->pri_bitmask == 0)
1772 BNX2X_ERR("Invalid pri_bitmask for %d\n", i);
1773
1774 if (CHIP_IS_E2(bp) || CHIP_IS_E3A0(bp)) {
1775
1776 if (p->pauseable &&
1777 DCBX_PFC_PRI_GET_NON_PAUSE(bp,
1778 p->pri_bitmask) != 0)
1779 BNX2X_ERR("Inconsistent config for "
1780 "pausable COS %d\n", i);
1781
1782 if (!p->pauseable &&
1783 DCBX_PFC_PRI_GET_PAUSE(bp,
1784 p->pri_bitmask) != 0)
1785 BNX2X_ERR("Inconsistent config for "
1786 "nonpausable COS %d\n", i);
1787 }
1788 }
1789
1790 if (p->pauseable)
1791 DP(NETIF_MSG_LINK, "COS %d PAUSABLE prijoinmask 0x%x\n",
1792 i, cos_data.data[i].pri_join_mask);
1793 else
1794 DP(NETIF_MSG_LINK, "COS %d NONPAUSABLE prijoinmask "
1795 "0x%x\n",
1796 i, cos_data.data[i].pri_join_mask);
1797 }
1798
1799 bp->dcbx_port_params.ets.num_of_cos = cos_data.num_of_cos ;
1800 }
1801
1802 static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp,
1803 u32 *set_configuration_ets_pg,
1804 u32 *pri_pg_tbl)
1805 {
1806 int i;
1807
1808 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
1809 set_configuration_ets_pg[i] = DCBX_PRI_PG_GET(pri_pg_tbl, i);
1810
1811 DP(NETIF_MSG_LINK, "set_configuration_ets_pg[%d] = 0x%x\n",
1812 i, set_configuration_ets_pg[i]);
1813 }
1814 }
1815
1816 static void bnx2x_dcbx_fw_struct(struct bnx2x *bp,
1817 struct bnx2x_func_tx_start_params *pfc_fw_cfg)
1818 {
1819 u16 pri_bit = 0;
1820 u8 cos = 0, pri = 0;
1821 struct priority_cos *tt2cos;
1822 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1823
1824 memset(pfc_fw_cfg, 0, sizeof(*pfc_fw_cfg));
1825
1826 /* to disable DCB - the structure must be zeroed */
1827 if (bp->dcbx_error & DCBX_REMOTE_MIB_ERROR)
1828 return;
1829
1830 /*shortcut*/
1831 tt2cos = pfc_fw_cfg->traffic_type_to_priority_cos;
1832
1833 /* Fw version should be incremented each update */
1834 pfc_fw_cfg->dcb_version = ++bp->dcb_version;
1835 pfc_fw_cfg->dcb_enabled = 1;
1836
1837 /* Fill priority parameters */
1838 for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
1839 tt2cos[pri].priority = ttp[pri];
1840 pri_bit = 1 << tt2cos[pri].priority;
1841
1842 /* Fill COS parameters based on COS calculated to
1843 * make it more general for future use */
1844 for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++)
1845 if (bp->dcbx_port_params.ets.cos_params[cos].
1846 pri_bitmask & pri_bit)
1847 tt2cos[pri].cos = cos;
1848 }
1849
1850 /* we never want the FW to add a 0 vlan tag */
1851 pfc_fw_cfg->dont_add_pri_0_en = 1;
1852
1853 bnx2x_dcbx_print_cos_params(bp, pfc_fw_cfg);
1854 }
1855
1856 void bnx2x_dcbx_pmf_update(struct bnx2x *bp)
1857 {
1858 /* if we need to syncronize DCBX result from prev PMF
1859 * read it from shmem and update bp and netdev accordingly
1860 */
1861 if (SHMEM2_HAS(bp, drv_flags) &&
1862 GET_FLAGS(SHMEM2_RD(bp, drv_flags), 1 << DRV_FLAGS_DCB_CONFIGURED)) {
1863 /* Read neg results if dcbx is in the FW */
1864 if (bnx2x_dcbx_read_shmem_neg_results(bp))
1865 return;
1866
1867 bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
1868 bp->dcbx_error);
1869 bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
1870 bp->dcbx_error);
1871 #ifdef BCM_DCBNL
1872 /*
1873 * Add new app tlvs to dcbnl
1874 */
1875 bnx2x_dcbnl_update_applist(bp, false);
1876 /*
1877 * Send a notification for the new negotiated parameters
1878 */
1879 dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
1880 #endif
1881 /*
1882 * reconfigure the netdevice with the results of the new
1883 * dcbx negotiation.
1884 */
1885 bnx2x_dcbx_update_tc_mapping(bp);
1886
1887 }
1888 }
1889
1890 /* DCB netlink */
1891 #ifdef BCM_DCBNL
1892
1893 #define BNX2X_DCBX_CAPS (DCB_CAP_DCBX_LLD_MANAGED | \
1894 DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_STATIC)
1895
1896 static inline bool bnx2x_dcbnl_set_valid(struct bnx2x *bp)
1897 {
1898 /* validate dcbnl call that may change HW state:
1899 * DCB is on and DCBX mode was SUCCESSFULLY set by the user.
1900 */
1901 return bp->dcb_state && bp->dcbx_mode_uset;
1902 }
1903
1904 static u8 bnx2x_dcbnl_get_state(struct net_device *netdev)
1905 {
1906 struct bnx2x *bp = netdev_priv(netdev);
1907 DP(NETIF_MSG_LINK, "state = %d\n", bp->dcb_state);
1908 return bp->dcb_state;
1909 }
1910
1911 static u8 bnx2x_dcbnl_set_state(struct net_device *netdev, u8 state)
1912 {
1913 struct bnx2x *bp = netdev_priv(netdev);
1914 DP(NETIF_MSG_LINK, "state = %s\n", state ? "on" : "off");
1915
1916 bnx2x_dcbx_set_state(bp, (state ? true : false), bp->dcbx_enabled);
1917 return 0;
1918 }
1919
1920 static void bnx2x_dcbnl_get_perm_hw_addr(struct net_device *netdev,
1921 u8 *perm_addr)
1922 {
1923 struct bnx2x *bp = netdev_priv(netdev);
1924 DP(NETIF_MSG_LINK, "GET-PERM-ADDR\n");
1925
1926 /* first the HW mac address */
1927 memcpy(perm_addr, netdev->dev_addr, netdev->addr_len);
1928
1929 #ifdef BCM_CNIC
1930 /* second SAN address */
1931 memcpy(perm_addr+netdev->addr_len, bp->fip_mac, netdev->addr_len);
1932 #endif
1933 }
1934
1935 static void bnx2x_dcbnl_set_pg_tccfg_tx(struct net_device *netdev, int prio,
1936 u8 prio_type, u8 pgid, u8 bw_pct,
1937 u8 up_map)
1938 {
1939 struct bnx2x *bp = netdev_priv(netdev);
1940
1941 DP(NETIF_MSG_LINK, "prio[%d] = %d\n", prio, pgid);
1942 if (!bnx2x_dcbnl_set_valid(bp) || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
1943 return;
1944
1945 /**
1946 * bw_pct ingnored - band-width percentage devision between user
1947 * priorities within the same group is not
1948 * standard and hence not supported
1949 *
1950 * prio_type igonred - priority levels within the same group are not
1951 * standard and hence are not supported. According
1952 * to the standard pgid 15 is dedicated to strict
1953 * prioirty traffic (on the port level).
1954 *
1955 * up_map ignored
1956 */
1957
1958 bp->dcbx_config_params.admin_configuration_ets_pg[prio] = pgid;
1959 bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
1960 }
1961
1962 static void bnx2x_dcbnl_set_pg_bwgcfg_tx(struct net_device *netdev,
1963 int pgid, u8 bw_pct)
1964 {
1965 struct bnx2x *bp = netdev_priv(netdev);
1966 DP(NETIF_MSG_LINK, "pgid[%d] = %d\n", pgid, bw_pct);
1967
1968 if (!bnx2x_dcbnl_set_valid(bp) || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
1969 return;
1970
1971 bp->dcbx_config_params.admin_configuration_bw_precentage[pgid] = bw_pct;
1972 bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
1973 }
1974
1975 static void bnx2x_dcbnl_set_pg_tccfg_rx(struct net_device *netdev, int prio,
1976 u8 prio_type, u8 pgid, u8 bw_pct,
1977 u8 up_map)
1978 {
1979 struct bnx2x *bp = netdev_priv(netdev);
1980 DP(NETIF_MSG_LINK, "Nothing to set; No RX support\n");
1981 }
1982
1983 static void bnx2x_dcbnl_set_pg_bwgcfg_rx(struct net_device *netdev,
1984 int pgid, u8 bw_pct)
1985 {
1986 struct bnx2x *bp = netdev_priv(netdev);
1987 DP(NETIF_MSG_LINK, "Nothing to set; No RX support\n");
1988 }
1989
1990 static void bnx2x_dcbnl_get_pg_tccfg_tx(struct net_device *netdev, int prio,
1991 u8 *prio_type, u8 *pgid, u8 *bw_pct,
1992 u8 *up_map)
1993 {
1994 struct bnx2x *bp = netdev_priv(netdev);
1995 DP(NETIF_MSG_LINK, "prio = %d\n", prio);
1996
1997 /**
1998 * bw_pct ingnored - band-width percentage devision between user
1999 * priorities within the same group is not
2000 * standard and hence not supported
2001 *
2002 * prio_type igonred - priority levels within the same group are not
2003 * standard and hence are not supported. According
2004 * to the standard pgid 15 is dedicated to strict
2005 * prioirty traffic (on the port level).
2006 *
2007 * up_map ignored
2008 */
2009 *up_map = *bw_pct = *prio_type = *pgid = 0;
2010
2011 if (!bp->dcb_state || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
2012 return;
2013
2014 *pgid = DCBX_PRI_PG_GET(bp->dcbx_local_feat.ets.pri_pg_tbl, prio);
2015 }
2016
2017 static void bnx2x_dcbnl_get_pg_bwgcfg_tx(struct net_device *netdev,
2018 int pgid, u8 *bw_pct)
2019 {
2020 struct bnx2x *bp = netdev_priv(netdev);
2021 DP(NETIF_MSG_LINK, "pgid = %d\n", pgid);
2022
2023 *bw_pct = 0;
2024
2025 if (!bp->dcb_state || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
2026 return;
2027
2028 *bw_pct = DCBX_PG_BW_GET(bp->dcbx_local_feat.ets.pg_bw_tbl, pgid);
2029 }
2030
2031 static void bnx2x_dcbnl_get_pg_tccfg_rx(struct net_device *netdev, int prio,
2032 u8 *prio_type, u8 *pgid, u8 *bw_pct,
2033 u8 *up_map)
2034 {
2035 struct bnx2x *bp = netdev_priv(netdev);
2036 DP(NETIF_MSG_LINK, "Nothing to get; No RX support\n");
2037
2038 *prio_type = *pgid = *bw_pct = *up_map = 0;
2039 }
2040
2041 static void bnx2x_dcbnl_get_pg_bwgcfg_rx(struct net_device *netdev,
2042 int pgid, u8 *bw_pct)
2043 {
2044 struct bnx2x *bp = netdev_priv(netdev);
2045 DP(NETIF_MSG_LINK, "Nothing to get; No RX support\n");
2046
2047 *bw_pct = 0;
2048 }
2049
2050 static void bnx2x_dcbnl_set_pfc_cfg(struct net_device *netdev, int prio,
2051 u8 setting)
2052 {
2053 struct bnx2x *bp = netdev_priv(netdev);
2054 DP(NETIF_MSG_LINK, "prio[%d] = %d\n", prio, setting);
2055
2056 if (!bnx2x_dcbnl_set_valid(bp) || prio >= MAX_PFC_PRIORITIES)
2057 return;
2058
2059 bp->dcbx_config_params.admin_pfc_bitmap |= ((setting ? 1 : 0) << prio);
2060
2061 if (setting)
2062 bp->dcbx_config_params.admin_pfc_tx_enable = 1;
2063 }
2064
2065 static void bnx2x_dcbnl_get_pfc_cfg(struct net_device *netdev, int prio,
2066 u8 *setting)
2067 {
2068 struct bnx2x *bp = netdev_priv(netdev);
2069 DP(NETIF_MSG_LINK, "prio = %d\n", prio);
2070
2071 *setting = 0;
2072
2073 if (!bp->dcb_state || prio >= MAX_PFC_PRIORITIES)
2074 return;
2075
2076 *setting = (bp->dcbx_local_feat.pfc.pri_en_bitmap >> prio) & 0x1;
2077 }
2078
2079 static u8 bnx2x_dcbnl_set_all(struct net_device *netdev)
2080 {
2081 struct bnx2x *bp = netdev_priv(netdev);
2082 int rc = 0;
2083
2084 DP(NETIF_MSG_LINK, "SET-ALL\n");
2085
2086 if (!bnx2x_dcbnl_set_valid(bp))
2087 return 1;
2088
2089 if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
2090 netdev_err(bp->dev, "Handling parity error recovery. "
2091 "Try again later\n");
2092 return 1;
2093 }
2094 if (netif_running(bp->dev)) {
2095 bnx2x_nic_unload(bp, UNLOAD_NORMAL);
2096 rc = bnx2x_nic_load(bp, LOAD_NORMAL);
2097 }
2098 DP(NETIF_MSG_LINK, "set_dcbx_params done (%d)\n", rc);
2099 if (rc)
2100 return 1;
2101
2102 return 0;
2103 }
2104
2105 static u8 bnx2x_dcbnl_get_cap(struct net_device *netdev, int capid, u8 *cap)
2106 {
2107 struct bnx2x *bp = netdev_priv(netdev);
2108 u8 rval = 0;
2109
2110 if (bp->dcb_state) {
2111 switch (capid) {
2112 case DCB_CAP_ATTR_PG:
2113 *cap = true;
2114 break;
2115 case DCB_CAP_ATTR_PFC:
2116 *cap = true;
2117 break;
2118 case DCB_CAP_ATTR_UP2TC:
2119 *cap = false;
2120 break;
2121 case DCB_CAP_ATTR_PG_TCS:
2122 *cap = 0x80; /* 8 priorities for PGs */
2123 break;
2124 case DCB_CAP_ATTR_PFC_TCS:
2125 *cap = 0x80; /* 8 priorities for PFC */
2126 break;
2127 case DCB_CAP_ATTR_GSP:
2128 *cap = true;
2129 break;
2130 case DCB_CAP_ATTR_BCN:
2131 *cap = false;
2132 break;
2133 case DCB_CAP_ATTR_DCBX:
2134 *cap = BNX2X_DCBX_CAPS;
2135 break;
2136 default:
2137 rval = -EINVAL;
2138 break;
2139 }
2140 } else
2141 rval = -EINVAL;
2142
2143 DP(NETIF_MSG_LINK, "capid %d:%x\n", capid, *cap);
2144 return rval;
2145 }
2146
2147 static u8 bnx2x_dcbnl_get_numtcs(struct net_device *netdev, int tcid, u8 *num)
2148 {
2149 struct bnx2x *bp = netdev_priv(netdev);
2150 u8 rval = 0;
2151
2152 DP(NETIF_MSG_LINK, "tcid %d\n", tcid);
2153
2154 if (bp->dcb_state) {
2155 switch (tcid) {
2156 case DCB_NUMTCS_ATTR_PG:
2157 *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
2158 DCBX_COS_MAX_NUM_E2;
2159 break;
2160 case DCB_NUMTCS_ATTR_PFC:
2161 *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
2162 DCBX_COS_MAX_NUM_E2;
2163 break;
2164 default:
2165 rval = -EINVAL;
2166 break;
2167 }
2168 } else
2169 rval = -EINVAL;
2170
2171 return rval;
2172 }
2173
2174 static u8 bnx2x_dcbnl_set_numtcs(struct net_device *netdev, int tcid, u8 num)
2175 {
2176 struct bnx2x *bp = netdev_priv(netdev);
2177 DP(NETIF_MSG_LINK, "num tcs = %d; Not supported\n", num);
2178 return -EINVAL;
2179 }
2180
2181 static u8 bnx2x_dcbnl_get_pfc_state(struct net_device *netdev)
2182 {
2183 struct bnx2x *bp = netdev_priv(netdev);
2184 DP(NETIF_MSG_LINK, "state = %d\n", bp->dcbx_local_feat.pfc.enabled);
2185
2186 if (!bp->dcb_state)
2187 return 0;
2188
2189 return bp->dcbx_local_feat.pfc.enabled;
2190 }
2191
2192 static void bnx2x_dcbnl_set_pfc_state(struct net_device *netdev, u8 state)
2193 {
2194 struct bnx2x *bp = netdev_priv(netdev);
2195 DP(NETIF_MSG_LINK, "state = %s\n", state ? "on" : "off");
2196
2197 if (!bnx2x_dcbnl_set_valid(bp))
2198 return;
2199
2200 bp->dcbx_config_params.admin_pfc_tx_enable =
2201 bp->dcbx_config_params.admin_pfc_enable = (state ? 1 : 0);
2202 }
2203
2204 static void bnx2x_admin_app_set_ent(
2205 struct bnx2x_admin_priority_app_table *app_ent,
2206 u8 idtype, u16 idval, u8 up)
2207 {
2208 app_ent->valid = 1;
2209
2210 switch (idtype) {
2211 case DCB_APP_IDTYPE_ETHTYPE:
2212 app_ent->traffic_type = TRAFFIC_TYPE_ETH;
2213 break;
2214 case DCB_APP_IDTYPE_PORTNUM:
2215 app_ent->traffic_type = TRAFFIC_TYPE_PORT;
2216 break;
2217 default:
2218 break; /* never gets here */
2219 }
2220 app_ent->app_id = idval;
2221 app_ent->priority = up;
2222 }
2223
2224 static bool bnx2x_admin_app_is_equal(
2225 struct bnx2x_admin_priority_app_table *app_ent,
2226 u8 idtype, u16 idval)
2227 {
2228 if (!app_ent->valid)
2229 return false;
2230
2231 switch (idtype) {
2232 case DCB_APP_IDTYPE_ETHTYPE:
2233 if (app_ent->traffic_type != TRAFFIC_TYPE_ETH)
2234 return false;
2235 break;
2236 case DCB_APP_IDTYPE_PORTNUM:
2237 if (app_ent->traffic_type != TRAFFIC_TYPE_PORT)
2238 return false;
2239 break;
2240 default:
2241 return false;
2242 }
2243 if (app_ent->app_id != idval)
2244 return false;
2245
2246 return true;
2247 }
2248
2249 static int bnx2x_set_admin_app_up(struct bnx2x *bp, u8 idtype, u16 idval, u8 up)
2250 {
2251 int i, ff;
2252
2253 /* iterate over the app entries looking for idtype and idval */
2254 for (i = 0, ff = -1; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) {
2255 struct bnx2x_admin_priority_app_table *app_ent =
2256 &bp->dcbx_config_params.admin_priority_app_table[i];
2257 if (bnx2x_admin_app_is_equal(app_ent, idtype, idval))
2258 break;
2259
2260 if (ff < 0 && !app_ent->valid)
2261 ff = i;
2262 }
2263 if (i < DCBX_CONFIG_MAX_APP_PROTOCOL)
2264 /* if found overwrite up */
2265 bp->dcbx_config_params.
2266 admin_priority_app_table[i].priority = up;
2267 else if (ff >= 0)
2268 /* not found use first-free */
2269 bnx2x_admin_app_set_ent(
2270 &bp->dcbx_config_params.admin_priority_app_table[ff],
2271 idtype, idval, up);
2272 else
2273 /* app table is full */
2274 return -EBUSY;
2275
2276 /* up configured, if not 0 make sure feature is enabled */
2277 if (up)
2278 bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
2279
2280 return 0;
2281 }
2282
2283 static u8 bnx2x_dcbnl_set_app_up(struct net_device *netdev, u8 idtype,
2284 u16 idval, u8 up)
2285 {
2286 struct bnx2x *bp = netdev_priv(netdev);
2287
2288 DP(NETIF_MSG_LINK, "app_type %d, app_id %x, prio bitmap %d\n",
2289 idtype, idval, up);
2290
2291 if (!bnx2x_dcbnl_set_valid(bp))
2292 return -EINVAL;
2293
2294 /* verify idtype */
2295 switch (idtype) {
2296 case DCB_APP_IDTYPE_ETHTYPE:
2297 case DCB_APP_IDTYPE_PORTNUM:
2298 break;
2299 default:
2300 return -EINVAL;
2301 }
2302 return bnx2x_set_admin_app_up(bp, idtype, idval, up);
2303 }
2304
2305 static u8 bnx2x_dcbnl_get_dcbx(struct net_device *netdev)
2306 {
2307 struct bnx2x *bp = netdev_priv(netdev);
2308 u8 state;
2309
2310 state = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_CEE;
2311
2312 if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF)
2313 state |= DCB_CAP_DCBX_STATIC;
2314
2315 return state;
2316 }
2317
2318 static u8 bnx2x_dcbnl_set_dcbx(struct net_device *netdev, u8 state)
2319 {
2320 struct bnx2x *bp = netdev_priv(netdev);
2321 DP(NETIF_MSG_LINK, "state = %02x\n", state);
2322
2323 /* set dcbx mode */
2324
2325 if ((state & BNX2X_DCBX_CAPS) != state) {
2326 BNX2X_ERR("Requested DCBX mode %x is beyond advertised "
2327 "capabilities\n", state);
2328 return 1;
2329 }
2330
2331 if (bp->dcb_state != BNX2X_DCB_STATE_ON) {
2332 BNX2X_ERR("DCB turned off, DCBX configuration is invalid\n");
2333 return 1;
2334 }
2335
2336 if (state & DCB_CAP_DCBX_STATIC)
2337 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_OFF;
2338 else
2339 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_ON;
2340
2341 bp->dcbx_mode_uset = true;
2342 return 0;
2343 }
2344
2345 static u8 bnx2x_dcbnl_get_featcfg(struct net_device *netdev, int featid,
2346 u8 *flags)
2347 {
2348 struct bnx2x *bp = netdev_priv(netdev);
2349 u8 rval = 0;
2350
2351 DP(NETIF_MSG_LINK, "featid %d\n", featid);
2352
2353 if (bp->dcb_state) {
2354 *flags = 0;
2355 switch (featid) {
2356 case DCB_FEATCFG_ATTR_PG:
2357 if (bp->dcbx_local_feat.ets.enabled)
2358 *flags |= DCB_FEATCFG_ENABLE;
2359 if (bp->dcbx_error & DCBX_LOCAL_ETS_ERROR)
2360 *flags |= DCB_FEATCFG_ERROR;
2361 break;
2362 case DCB_FEATCFG_ATTR_PFC:
2363 if (bp->dcbx_local_feat.pfc.enabled)
2364 *flags |= DCB_FEATCFG_ENABLE;
2365 if (bp->dcbx_error & (DCBX_LOCAL_PFC_ERROR |
2366 DCBX_LOCAL_PFC_MISMATCH))
2367 *flags |= DCB_FEATCFG_ERROR;
2368 break;
2369 case DCB_FEATCFG_ATTR_APP:
2370 if (bp->dcbx_local_feat.app.enabled)
2371 *flags |= DCB_FEATCFG_ENABLE;
2372 if (bp->dcbx_error & (DCBX_LOCAL_APP_ERROR |
2373 DCBX_LOCAL_APP_MISMATCH))
2374 *flags |= DCB_FEATCFG_ERROR;
2375 break;
2376 default:
2377 rval = -EINVAL;
2378 break;
2379 }
2380 } else
2381 rval = -EINVAL;
2382
2383 return rval;
2384 }
2385
2386 static u8 bnx2x_dcbnl_set_featcfg(struct net_device *netdev, int featid,
2387 u8 flags)
2388 {
2389 struct bnx2x *bp = netdev_priv(netdev);
2390 u8 rval = 0;
2391
2392 DP(NETIF_MSG_LINK, "featid = %d flags = %02x\n", featid, flags);
2393
2394 /* ignore the 'advertise' flag */
2395 if (bnx2x_dcbnl_set_valid(bp)) {
2396 switch (featid) {
2397 case DCB_FEATCFG_ATTR_PG:
2398 bp->dcbx_config_params.admin_ets_enable =
2399 flags & DCB_FEATCFG_ENABLE ? 1 : 0;
2400 bp->dcbx_config_params.admin_ets_willing =
2401 flags & DCB_FEATCFG_WILLING ? 1 : 0;
2402 break;
2403 case DCB_FEATCFG_ATTR_PFC:
2404 bp->dcbx_config_params.admin_pfc_enable =
2405 flags & DCB_FEATCFG_ENABLE ? 1 : 0;
2406 bp->dcbx_config_params.admin_pfc_willing =
2407 flags & DCB_FEATCFG_WILLING ? 1 : 0;
2408 break;
2409 case DCB_FEATCFG_ATTR_APP:
2410 /* ignore enable, always enabled */
2411 bp->dcbx_config_params.admin_app_priority_willing =
2412 flags & DCB_FEATCFG_WILLING ? 1 : 0;
2413 break;
2414 default:
2415 rval = -EINVAL;
2416 break;
2417 }
2418 } else
2419 rval = -EINVAL;
2420
2421 return rval;
2422 }
2423
2424 static int bnx2x_peer_appinfo(struct net_device *netdev,
2425 struct dcb_peer_app_info *info, u16* app_count)
2426 {
2427 int i;
2428 struct bnx2x *bp = netdev_priv(netdev);
2429
2430 DP(NETIF_MSG_LINK, "APP-INFO\n");
2431
2432 info->willing = (bp->dcbx_remote_flags & DCBX_APP_REM_WILLING) ?: 0;
2433 info->error = (bp->dcbx_remote_flags & DCBX_APP_RX_ERROR) ?: 0;
2434 *app_count = 0;
2435
2436 for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++)
2437 if (bp->dcbx_remote_feat.app.app_pri_tbl[i].appBitfield &
2438 DCBX_APP_ENTRY_VALID)
2439 (*app_count)++;
2440 return 0;
2441 }
2442
2443 static int bnx2x_peer_apptable(struct net_device *netdev,
2444 struct dcb_app *table)
2445 {
2446 int i, j;
2447 struct bnx2x *bp = netdev_priv(netdev);
2448
2449 DP(NETIF_MSG_LINK, "APP-TABLE\n");
2450
2451 for (i = 0, j = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
2452 struct dcbx_app_priority_entry *ent =
2453 &bp->dcbx_remote_feat.app.app_pri_tbl[i];
2454
2455 if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
2456 table[j].selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
2457 table[j].priority = bnx2x_dcbx_dcbnl_app_up(ent);
2458 table[j++].protocol = ent->app_id;
2459 }
2460 }
2461 return 0;
2462 }
2463
2464 static int bnx2x_cee_peer_getpg(struct net_device *netdev, struct cee_pg *pg)
2465 {
2466 int i;
2467 struct bnx2x *bp = netdev_priv(netdev);
2468
2469 pg->willing = (bp->dcbx_remote_flags & DCBX_ETS_REM_WILLING) ?: 0;
2470
2471 for (i = 0; i < CEE_DCBX_MAX_PGS; i++) {
2472 pg->pg_bw[i] =
2473 DCBX_PG_BW_GET(bp->dcbx_remote_feat.ets.pg_bw_tbl, i);
2474 pg->prio_pg[i] =
2475 DCBX_PRI_PG_GET(bp->dcbx_remote_feat.ets.pri_pg_tbl, i);
2476 }
2477 return 0;
2478 }
2479
2480 static int bnx2x_cee_peer_getpfc(struct net_device *netdev,
2481 struct cee_pfc *pfc)
2482 {
2483 struct bnx2x *bp = netdev_priv(netdev);
2484 pfc->tcs_supported = bp->dcbx_remote_feat.pfc.pfc_caps;
2485 pfc->pfc_en = bp->dcbx_remote_feat.pfc.pri_en_bitmap;
2486 return 0;
2487 }
2488
2489 const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops = {
2490 .getstate = bnx2x_dcbnl_get_state,
2491 .setstate = bnx2x_dcbnl_set_state,
2492 .getpermhwaddr = bnx2x_dcbnl_get_perm_hw_addr,
2493 .setpgtccfgtx = bnx2x_dcbnl_set_pg_tccfg_tx,
2494 .setpgbwgcfgtx = bnx2x_dcbnl_set_pg_bwgcfg_tx,
2495 .setpgtccfgrx = bnx2x_dcbnl_set_pg_tccfg_rx,
2496 .setpgbwgcfgrx = bnx2x_dcbnl_set_pg_bwgcfg_rx,
2497 .getpgtccfgtx = bnx2x_dcbnl_get_pg_tccfg_tx,
2498 .getpgbwgcfgtx = bnx2x_dcbnl_get_pg_bwgcfg_tx,
2499 .getpgtccfgrx = bnx2x_dcbnl_get_pg_tccfg_rx,
2500 .getpgbwgcfgrx = bnx2x_dcbnl_get_pg_bwgcfg_rx,
2501 .setpfccfg = bnx2x_dcbnl_set_pfc_cfg,
2502 .getpfccfg = bnx2x_dcbnl_get_pfc_cfg,
2503 .setall = bnx2x_dcbnl_set_all,
2504 .getcap = bnx2x_dcbnl_get_cap,
2505 .getnumtcs = bnx2x_dcbnl_get_numtcs,
2506 .setnumtcs = bnx2x_dcbnl_set_numtcs,
2507 .getpfcstate = bnx2x_dcbnl_get_pfc_state,
2508 .setpfcstate = bnx2x_dcbnl_set_pfc_state,
2509 .setapp = bnx2x_dcbnl_set_app_up,
2510 .getdcbx = bnx2x_dcbnl_get_dcbx,
2511 .setdcbx = bnx2x_dcbnl_set_dcbx,
2512 .getfeatcfg = bnx2x_dcbnl_get_featcfg,
2513 .setfeatcfg = bnx2x_dcbnl_set_featcfg,
2514 .peer_getappinfo = bnx2x_peer_appinfo,
2515 .peer_getapptable = bnx2x_peer_apptable,
2516 .cee_peer_getpg = bnx2x_cee_peer_getpg,
2517 .cee_peer_getpfc = bnx2x_cee_peer_getpfc,
2518 };
2519
2520 #endif /* BCM_DCBNL */