aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
blob: 237418a0e6e086f425f3215990d443ac49e17e54 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
/*
 * drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
 * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the names of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/dcbnl.h>
#include <linux/if_ether.h>
#include <linux/list.h>

#include "spectrum.h"
#include "core.h"
#include "port.h"
#include "reg.h"

static struct mlxsw_sp_sb_pr *mlxsw_sp_sb_pr_get(struct mlxsw_sp *mlxsw_sp,
						 u8 pool,
						 enum mlxsw_reg_sbxx_dir dir)
{
	return &mlxsw_sp->sb.prs[dir][pool];
}

static struct mlxsw_sp_sb_cm *mlxsw_sp_sb_cm_get(struct mlxsw_sp *mlxsw_sp,
						 u8 local_port, u8 pg_buff,
						 enum mlxsw_reg_sbxx_dir dir)
{
	return &mlxsw_sp->sb.ports[local_port].cms[dir][pg_buff];
}

static struct mlxsw_sp_sb_pm *mlxsw_sp_sb_pm_get(struct mlxsw_sp *mlxsw_sp,
						 u8 local_port, u8 pool,
						 enum mlxsw_reg_sbxx_dir dir)
{
	return &mlxsw_sp->sb.ports[local_port].pms[dir][pool];
}

static int mlxsw_sp_sb_pr_write(struct mlxsw_sp *mlxsw_sp, u8 pool,
				enum mlxsw_reg_sbxx_dir dir,
				enum mlxsw_reg_sbpr_mode mode, u32 size)
{
	char sbpr_pl[MLXSW_REG_SBPR_LEN];
	struct mlxsw_sp_sb_pr *pr;
	int err;

	mlxsw_reg_sbpr_pack(sbpr_pl, pool, dir, mode, size);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbpr), sbpr_pl);
	if (err)
		return err;

	pr = mlxsw_sp_sb_pr_get(mlxsw_sp, pool, dir);
	pr->mode = mode;
	pr->size = size;
	return 0;
}

static int mlxsw_sp_sb_cm_write(struct mlxsw_sp *mlxsw_sp, u8 local_port,
				u8 pg_buff, enum mlxsw_reg_sbxx_dir dir,
				u32 min_buff, u32 max_buff, u8 pool)
{
	char sbcm_pl[MLXSW_REG_SBCM_LEN];
	int err;

	mlxsw_reg_sbcm_pack(sbcm_pl, local_port, pg_buff, dir,
			    min_buff, max_buff, pool);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbcm), sbcm_pl);
	if (err)
		return err;
	if (pg_buff < MLXSW_SP_SB_TC_COUNT) {
		struct mlxsw_sp_sb_cm *cm;

		cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port, pg_buff, dir);
		cm->min_buff = min_buff;
		cm->max_buff = max_buff;
		cm->pool = pool;
	}
	return 0;
}

static int mlxsw_sp_sb_pm_write(struct mlxsw_sp *mlxsw_sp, u8 local_port,
				u8 pool, enum mlxsw_reg_sbxx_dir dir,
				u32 min_buff, u32 max_buff)
{
	char sbpm_pl[MLXSW_REG_SBPM_LEN];
	struct mlxsw_sp_sb_pm *pm;
	int err;

	mlxsw_reg_sbpm_pack(sbpm_pl, local_port, pool, dir, false,
			    min_buff, max_buff);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbpm), sbpm_pl);
	if (err)
		return err;

	pm = mlxsw_sp_sb_pm_get(mlxsw_sp, local_port, pool, dir);
	pm->min_buff = min_buff;
	pm->max_buff = max_buff;
	return 0;
}

static int mlxsw_sp_sb_pm_occ_clear(struct mlxsw_sp *mlxsw_sp, u8 local_port,
				    u8 pool, enum mlxsw_reg_sbxx_dir dir,
				    struct list_head *bulk_list)
{
	char sbpm_pl[MLXSW_REG_SBPM_LEN];

	mlxsw_reg_sbpm_pack(sbpm_pl, local_port, pool, dir, true, 0, 0);
	return mlxsw_reg_trans_query(mlxsw_sp->core, MLXSW_REG(sbpm), sbpm_pl,
				     bulk_list, NULL, 0);
}

static void mlxsw_sp_sb_pm_occ_query_cb(struct mlxsw_core *mlxsw_core,
					char *sbpm_pl, size_t sbpm_pl_len,
					unsigned long cb_priv)
{
	struct mlxsw_sp_sb_pm *pm = (struct mlxsw_sp_sb_pm *) cb_priv;

	mlxsw_reg_sbpm_unpack(sbpm_pl, &pm->occ.cur, &pm->occ.max);
}

static int mlxsw_sp_sb_pm_occ_query(struct mlxsw_sp *mlxsw_sp, u8 local_port,
				    u8 pool, enum mlxsw_reg_sbxx_dir dir,
				    struct list_head *bulk_list)
{
	char sbpm_pl[MLXSW_REG_SBPM_LEN];
	struct mlxsw_sp_sb_pm *pm;

	pm = mlxsw_sp_sb_pm_get(mlxsw_sp, local_port, pool, dir);
	mlxsw_reg_sbpm_pack(sbpm_pl, local_port, pool, dir, false, 0, 0);
	return mlxsw_reg_trans_query(mlxsw_sp->core, MLXSW_REG(sbpm), sbpm_pl,
				     bulk_list,
				     mlxsw_sp_sb_pm_occ_query_cb,
				     (unsigned long) pm);
}

static const u16 mlxsw_sp_pbs[] = {
	[0] = 2 * MLXSW_SP_BYTES_TO_CELLS(ETH_FRAME_LEN),
	[9] = 2 * MLXSW_SP_BYTES_TO_CELLS(MLXSW_PORT_MAX_MTU),
};

#define MLXSW_SP_PBS_LEN ARRAY_SIZE(mlxsw_sp_pbs)
#define MLXSW_SP_PB_UNUSED 8

static int mlxsw_sp_port_pb_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
	char pbmc_pl[MLXSW_REG_PBMC_LEN];
	int i;

	mlxsw_reg_pbmc_pack(pbmc_pl, mlxsw_sp_port->local_port,
			    0xffff, 0xffff / 2);
	for (i = 0; i < MLXSW_SP_PBS_LEN; i++) {
		if (i == MLXSW_SP_PB_UNUSED)
			continue;
		mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, i, mlxsw_sp_pbs[i]);
	}
	mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl,
					 MLXSW_REG_PBMC_PORT_SHARED_BUF_IDX, 0);
	return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core,
			       MLXSW_REG(pbmc), pbmc_pl);
}

static int mlxsw_sp_port_pb_prio_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
	char pptb_pl[MLXSW_REG_PPTB_LEN];
	int i;

	mlxsw_reg_pptb_pack(pptb_pl, mlxsw_sp_port->local_port);
	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
		mlxsw_reg_pptb_prio_to_buff_pack(pptb_pl, i, 0);
	return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pptb),
			       pptb_pl);
}

static int mlxsw_sp_port_headroom_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
	int err;

	err = mlxsw_sp_port_pb_init(mlxsw_sp_port);
	if (err)
		return err;
	return mlxsw_sp_port_pb_prio_init(mlxsw_sp_port);
}

#define MLXSW_SP_SB_PR_INGRESS_SIZE				\
	(15000000 - (2 * 20000 * MLXSW_PORT_MAX_PORTS))
#define MLXSW_SP_SB_PR_INGRESS_MNG_SIZE (200 * 1000)
#define MLXSW_SP_SB_PR_EGRESS_SIZE				\
	(14000000 - (8 * 1500 * MLXSW_PORT_MAX_PORTS))

#define MLXSW_SP_SB_PR(_mode, _size)	\
	{				\
		.mode = _mode,		\
		.size = _size,		\
	}

static const struct mlxsw_sp_sb_pr mlxsw_sp_sb_prs_ingress[] = {
	MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC,
		       MLXSW_SP_BYTES_TO_CELLS(MLXSW_SP_SB_PR_INGRESS_SIZE)),
	MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
	MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
	MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC,
		       MLXSW_SP_BYTES_TO_CELLS(MLXSW_SP_SB_PR_INGRESS_MNG_SIZE)),
};

#define MLXSW_SP_SB_PRS_INGRESS_LEN ARRAY_SIZE(mlxsw_sp_sb_prs_ingress)

static const struct mlxsw_sp_sb_pr mlxsw_sp_sb_prs_egress[] = {
	MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC,
		       MLXSW_SP_BYTES_TO_CELLS(MLXSW_SP_SB_PR_EGRESS_SIZE)),
	MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
	MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
	MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
};

#define MLXSW_SP_SB_PRS_EGRESS_LEN ARRAY_SIZE(mlxsw_sp_sb_prs_egress)

static int __mlxsw_sp_sb_prs_init(struct mlxsw_sp *mlxsw_sp,
				  enum mlxsw_reg_sbxx_dir dir,
				  const struct mlxsw_sp_sb_pr *prs,
				  size_t prs_len)
{
	int i;
	int err;

	for (i = 0; i < prs_len; i++) {
		const struct mlxsw_sp_sb_pr *pr;

		pr = &prs[i];
		err = mlxsw_sp_sb_pr_write(mlxsw_sp, i, dir,
					   pr->mode, pr->size);
		if (err)
			return err;
	}
	return 0;
}

static int mlxsw_sp_sb_prs_init(struct mlxsw_sp *mlxsw_sp)
{
	int err;

	err = __mlxsw_sp_sb_prs_init(mlxsw_sp, MLXSW_REG_SBXX_DIR_INGRESS,
				     mlxsw_sp_sb_prs_ingress,
				     MLXSW_SP_SB_PRS_INGRESS_LEN);
	if (err)
		return err;
	return __mlxsw_sp_sb_prs_init(mlxsw_sp, MLXSW_REG_SBXX_DIR_EGRESS,
				      mlxsw_sp_sb_prs_egress,
				      MLXSW_SP_SB_PRS_EGRESS_LEN);
}

#define MLXSW_SP_SB_CM(_min_buff, _max_buff, _pool)	\
	{						\
		.min_buff = _min_buff,			\
		.max_buff = _max_buff,			\
		.pool = _pool,				\
	}

static const struct mlxsw_sp_sb_cm mlxsw_sp_sb_cms_ingress[] = {
	MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(10000), 8, 0),
	MLXSW_SP_SB_CM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN, 0),
	MLXSW_SP_SB_CM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN, 0),
	MLXSW_SP_SB_CM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN, 0),
	MLXSW_SP_SB_CM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN, 0),
	MLXSW_SP_SB_CM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN, 0),
	MLXSW_SP_SB_CM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN, 0),
	MLXSW_SP_SB_CM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN, 0),
	MLXSW_SP_SB_CM(0, 0, 0), /* dummy, this PG does not exist */
	MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(20000), 1, 3),
};

#define MLXSW_SP_SB_CMS_INGRESS_LEN ARRAY_SIZE(mlxsw_sp_sb_cms_ingress)

static const struct mlxsw_sp_sb_cm mlxsw_sp_sb_cms_egress[] = {
	MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(1500), 9, 0),
	MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(1500), 9, 0),
	MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(1500), 9, 0),
	MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(1500), 9, 0),
	MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(1500), 9, 0),
	MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(1500), 9, 0),
	MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(1500), 9, 0),
	MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(1500), 9, 0),
	MLXSW_SP_SB_CM(0, 0, 0),
	MLXSW_SP_SB_CM(0, 0, 0),
	MLXSW_SP_SB_CM(0, 0, 0),
	MLXSW_SP_SB_CM(0, 0, 0),
	MLXSW_SP_SB_CM(0, 0, 0),
	MLXSW_SP_SB_CM(0, 0, 0),
	MLXSW_SP_SB_CM(0, 0, 0),
	MLXSW_SP_SB_CM(0, 0, 0),
	MLXSW_SP_SB_CM(1, 0xff, 0),
};

#define MLXSW_SP_SB_CMS_EGRESS_LEN ARRAY_SIZE(mlxsw_sp_sb_cms_egress)

#define MLXSW_SP_CPU_PORT_SB_CM MLXSW_SP_SB_CM(0, 0, 0)

static const struct mlxsw_sp_sb_cm mlxsw_sp_cpu_port_sb_cms[] = {
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_SB_CM(MLXSW_SP_BYTES_TO_CELLS(10000), 0, 0),
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
	MLXSW_SP_CPU_PORT_SB_CM,
};

#define MLXSW_SP_CPU_PORT_SB_MCS_LEN \
	ARRAY_SIZE(mlxsw_sp_cpu_port_sb_cms)

static int __mlxsw_sp_sb_cms_init(struct mlxsw_sp *mlxsw_sp, u8 local_port,
				  enum mlxsw_reg_sbxx_dir dir,
				  const struct mlxsw_sp_sb_cm *cms,
				  size_t cms_len)
{
	int i;
	int err;

	for (i = 0; i < cms_len; i++) {
		const struct mlxsw_sp_sb_cm *cm;

		if (i == 8 && dir == MLXSW_REG_SBXX_DIR_INGRESS)
			continue; /* PG number 8 does not exist, skip it */
		cm = &cms[i];
		err = mlxsw_sp_sb_cm_write(mlxsw_sp, local_port, i, dir,
					   cm->min_buff, cm->max_buff,
					   cm->pool);
		if (err)
			return err;
	}
	return 0;
}

static int mlxsw_sp_port_sb_cms_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
	int err;

	err = __mlxsw_sp_sb_cms_init(mlxsw_sp_port->mlxsw_sp,
				     mlxsw_sp_port->local_port,
				     MLXSW_REG_SBXX_DIR_INGRESS,
				     mlxsw_sp_sb_cms_ingress,
				     MLXSW_SP_SB_CMS_INGRESS_LEN);
	if (err)
		return err;
	return __mlxsw_sp_sb_cms_init(mlxsw_sp_port->mlxsw_sp,
				      mlxsw_sp_port->local_port,
				      MLXSW_REG_SBXX_DIR_EGRESS,
				      mlxsw_sp_sb_cms_egress,
				      MLXSW_SP_SB_CMS_EGRESS_LEN);
}

static int mlxsw_sp_cpu_port_sb_cms_init(struct mlxsw_sp *mlxsw_sp)
{
	return __mlxsw_sp_sb_cms_init(mlxsw_sp, 0, MLXSW_REG_SBXX_DIR_EGRESS,
				      mlxsw_sp_cpu_port_sb_cms,
				      MLXSW_SP_CPU_PORT_SB_MCS_LEN);
}

#define MLXSW_SP_SB_PM(_min_buff, _max_buff)	\
	{					\
		.min_buff = _min_buff,		\
		.max_buff = _max_buff,		\
	}

static const struct mlxsw_sp_sb_pm mlxsw_sp_sb_pms_ingress[] = {
	MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MAX),
	MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
	MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
	MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MAX),
};

#define MLXSW_SP_SB_PMS_INGRESS_LEN ARRAY_SIZE(mlxsw_sp_sb_pms_ingress)

static const struct mlxsw_sp_sb_pm mlxsw_sp_sb_pms_egress[] = {
	MLXSW_SP_SB_PM(0, 7),
	MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
	MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
	MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
};

#define MLXSW_SP_SB_PMS_EGRESS_LEN ARRAY_SIZE(mlxsw_sp_sb_pms_egress)

static int __mlxsw_sp_port_sb_pms_init(struct mlxsw_sp *mlxsw_sp, u8 local_port,
				       enum mlxsw_reg_sbxx_dir dir,
				       const struct mlxsw_sp_sb_pm *pms,
				       size_t pms_len)
{
	int i;
	int err;

	for (i = 0; i < pms_len; i++) {
		const struct mlxsw_sp_sb_pm *pm;

		pm = &pms[i];
		err = mlxsw_sp_sb_pm_write(mlxsw_sp, local_port, i, dir,
					   pm->min_buff, pm->max_buff);
		if (err)
			return err;
	}
	return 0;
}

static int mlxsw_sp_port_sb_pms_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
	int err;

	err = __mlxsw_sp_port_sb_pms_init(mlxsw_sp_port->mlxsw_sp,
					  mlxsw_sp_port->local_port,
					  MLXSW_REG_SBXX_DIR_INGRESS,
					  mlxsw_sp_sb_pms_ingress,
					  MLXSW_SP_SB_PMS_INGRESS_LEN);
	if (err)
		return err;
	return __mlxsw_sp_port_sb_pms_init(mlxsw_sp_port->mlxsw_sp,
					   mlxsw_sp_port->local_port,
					   MLXSW_REG_SBXX_DIR_EGRESS,
					   mlxsw_sp_sb_pms_egress,
					   MLXSW_SP_SB_PMS_EGRESS_LEN);
}

struct mlxsw_sp_sb_mm {
	u32 min_buff;
	u32 max_buff;
	u8 pool;
};

#define MLXSW_SP_SB_MM(_min_buff, _max_buff, _pool)	\
	{						\
		.min_buff = _min_buff,			\
		.max_buff = _max_buff,			\
		.pool = _pool,				\
	}

static const struct mlxsw_sp_sb_mm mlxsw_sp_sb_mms[] = {
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
	MLXSW_SP_SB_MM(MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0),
};

#define MLXSW_SP_SB_MMS_LEN ARRAY_SIZE(mlxsw_sp_sb_mms)

static int mlxsw_sp_sb_mms_init(struct mlxsw_sp *mlxsw_sp)
{
	char sbmm_pl[MLXSW_REG_SBMM_LEN];
	int i;
	int err;

	for (i = 0; i < MLXSW_SP_SB_MMS_LEN; i++) {
		const struct mlxsw_sp_sb_mm *mc;

		mc = &mlxsw_sp_sb_mms[i];
		mlxsw_reg_sbmm_pack(sbmm_pl, i, mc->min_buff,
				    mc->max_buff, mc->pool);
		err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbmm), sbmm_pl);
		if (err)
			return err;
	}
	return 0;
}

#define MLXSW_SP_SB_SIZE (16 * 1024 * 1024)

int mlxsw_sp_buffers_init(struct mlxsw_sp *mlxsw_sp)
{
	int err;

	err = mlxsw_sp_sb_prs_init(mlxsw_sp);
	if (err)
		return err;
	err = mlxsw_sp_cpu_port_sb_cms_init(mlxsw_sp);
	if (err)
		return err;
	err = mlxsw_sp_sb_mms_init(mlxsw_sp);
	if (err)
		return err;
	return devlink_sb_register(priv_to_devlink(mlxsw_sp->core), 0,
				   MLXSW_SP_SB_SIZE,
				   MLXSW_SP_SB_POOL_COUNT,
				   MLXSW_SP_SB_POOL_COUNT,
				   MLXSW_SP_SB_TC_COUNT,
				   MLXSW_SP_SB_TC_COUNT);
}

void mlxsw_sp_buffers_fini(struct mlxsw_sp *mlxsw_sp)
{
	devlink_sb_unregister(priv_to_devlink(mlxsw_sp->core), 0);
}

int mlxsw_sp_port_buffers_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
	int err;

	err = mlxsw_sp_port_headroom_init(mlxsw_sp_port);
	if (err)
		return err;
	err = mlxsw_sp_port_sb_cms_init(mlxsw_sp_port);
	if (err)
		return err;
	err = mlxsw_sp_port_sb_pms_init(mlxsw_sp_port);

	return err;
}

static u8 pool_get(u16 pool_index)
{
	return pool_index % MLXSW_SP_SB_POOL_COUNT;
}

static u16 pool_index_get(u8 pool, enum mlxsw_reg_sbxx_dir dir)
{
	u16 pool_index;

	pool_index = pool;
	if (dir == MLXSW_REG_SBXX_DIR_EGRESS)
		pool_index += MLXSW_SP_SB_POOL_COUNT;
	return pool_index;
}

static enum mlxsw_reg_sbxx_dir dir_get(u16 pool_index)
{
	return pool_index < MLXSW_SP_SB_POOL_COUNT ?
	       MLXSW_REG_SBXX_DIR_INGRESS : MLXSW_REG_SBXX_DIR_EGRESS;
}

int mlxsw_sp_sb_pool_get(struct mlxsw_core *mlxsw_core,
			 unsigned int sb_index, u16 pool_index,
			 struct devlink_sb_pool_info *pool_info)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
	u8 pool = pool_get(pool_index);
	enum mlxsw_reg_sbxx_dir dir = dir_get(pool_index);
	struct mlxsw_sp_sb_pr *pr = mlxsw_sp_sb_pr_get(mlxsw_sp, pool, dir);

	pool_info->pool_type = dir;
	pool_info->size = MLXSW_SP_CELLS_TO_BYTES(pr->size);
	pool_info->threshold_type = pr->mode;
	return 0;
}

int mlxsw_sp_sb_pool_set(struct mlxsw_core *mlxsw_core,
			 unsigned int sb_index, u16 pool_index, u32 size,
			 enum devlink_sb_threshold_type threshold_type)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
	u8 pool = pool_get(pool_index);
	enum mlxsw_reg_sbxx_dir dir = dir_get(pool_index);
	enum mlxsw_reg_sbpr_mode mode = threshold_type;
	u32 pool_size = MLXSW_SP_BYTES_TO_CELLS(size);

	return mlxsw_sp_sb_pr_write(mlxsw_sp, pool, dir, mode, pool_size);
}

#define MLXSW_SP_SB_THRESHOLD_TO_ALPHA_OFFSET (-2) /* 3->1, 16->14 */

static u32 mlxsw_sp_sb_threshold_out(struct mlxsw_sp *mlxsw_sp, u8 pool,
				     enum mlxsw_reg_sbxx_dir dir, u32 max_buff)
{
	struct mlxsw_sp_sb_pr *pr = mlxsw_sp_sb_pr_get(mlxsw_sp, pool, dir);

	if (pr->mode == MLXSW_REG_SBPR_MODE_DYNAMIC)
		return max_buff - MLXSW_SP_SB_THRESHOLD_TO_ALPHA_OFFSET;
	return MLXSW_SP_CELLS_TO_BYTES(max_buff);
}

static int mlxsw_sp_sb_threshold_in(struct mlxsw_sp *mlxsw_sp, u8 pool,
				    enum mlxsw_reg_sbxx_dir dir, u32 threshold,
				    u32 *p_max_buff)
{
	struct mlxsw_sp_sb_pr *pr = mlxsw_sp_sb_pr_get(mlxsw_sp, pool, dir);

	if (pr->mode == MLXSW_REG_SBPR_MODE_DYNAMIC) {
		int val;

		val = threshold + MLXSW_SP_SB_THRESHOLD_TO_ALPHA_OFFSET;
		if (val < MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN ||
		    val > MLXSW_REG_SBXX_DYN_MAX_BUFF_MAX)
			return -EINVAL;
		*p_max_buff = val;
	} else {
		*p_max_buff = MLXSW_SP_BYTES_TO_CELLS(threshold);
	}
	return 0;
}

int mlxsw_sp_sb_port_pool_get(struct mlxsw_core_port *mlxsw_core_port,
			      unsigned int sb_index, u16 pool_index,
			      u32 *p_threshold)
{
	struct mlxsw_sp_port *mlxsw_sp_port =
			mlxsw_core_port_driver_priv(mlxsw_core_port);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	u8 local_port = mlxsw_sp_port->local_port;
	u8 pool = pool_get(pool_index);
	enum mlxsw_reg_sbxx_dir dir = dir_get(pool_index);
	struct mlxsw_sp_sb_pm *pm = mlxsw_sp_sb_pm_get(mlxsw_sp, local_port,
						       pool, dir);

	*p_threshold = mlxsw_sp_sb_threshold_out(mlxsw_sp, pool, dir,
						 pm->max_buff);
	return 0;
}

int mlxsw_sp_sb_port_pool_set(struct mlxsw_core_port *mlxsw_core_port,
			      unsigned int sb_index, u16 pool_index,
			      u32 threshold)
{
	struct mlxsw_sp_port *mlxsw_sp_port =
			mlxsw_core_port_driver_priv(mlxsw_core_port);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	u8 local_port = mlxsw_sp_port->local_port;
	u8 pool = pool_get(pool_index);
	enum mlxsw_reg_sbxx_dir dir = dir_get(pool_index);
	u32 max_buff;
	int err;

	err = mlxsw_sp_sb_threshold_in(mlxsw_sp, pool, dir,
				       threshold, &max_buff);
	if (err)
		return err;

	return mlxsw_sp_sb_pm_write(mlxsw_sp, local_port, pool, dir,
				    0, max_buff);
}

int mlxsw_sp_sb_tc_pool_bind_get(struct mlxsw_core_port *mlxsw_core_port,
				 unsigned int sb_index, u16 tc_index,
				 enum devlink_sb_pool_type pool_type,
				 u16 *p_pool_index, u32 *p_threshold)
{
	struct mlxsw_sp_port *mlxsw_sp_port =
			mlxsw_core_port_driver_priv(mlxsw_core_port);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	u8 local_port = mlxsw_sp_port->local_port;
	u8 pg_buff = tc_index;
	enum mlxsw_reg_sbxx_dir dir = pool_type;
	struct mlxsw_sp_sb_cm *cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port,
						       pg_buff, dir);

	*p_threshold = mlxsw_sp_sb_threshold_out(mlxsw_sp, cm->pool, dir,
						 cm->max_buff);
	*p_pool_index = pool_index_get(cm->pool, pool_type);
	return 0;
}

int mlxsw_sp_sb_tc_pool_bind_set(struct mlxsw_core_port *mlxsw_core_port,
				 unsigned int sb_index, u16 tc_index,
				 enum devlink_sb_pool_type pool_type,
				 u16 pool_index, u32 threshold)
{
	struct mlxsw_sp_port *mlxsw_sp_port =
			mlxsw_core_port_driver_priv(mlxsw_core_port);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	u8 local_port = mlxsw_sp_port->local_port;
	u8 pg_buff = tc_index;
	enum mlxsw_reg_sbxx_dir dir = pool_type;
	u8 pool = pool_index;
	u32 max_buff;
	int err;

	err = mlxsw_sp_sb_threshold_in(mlxsw_sp, pool, dir,
				       threshold, &max_buff);
	if (err)
		return err;

	if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS) {
		if (pool < MLXSW_SP_SB_POOL_COUNT)
			return -EINVAL;
		pool -= MLXSW_SP_SB_POOL_COUNT;
	} else if (pool >= MLXSW_SP_SB_POOL_COUNT) {
		return -EINVAL;
	}
	return mlxsw_sp_sb_cm_write(mlxsw_sp, local_port, pg_buff, dir,
				    0, max_buff, pool);
}

#define MASKED_COUNT_MAX \
	(MLXSW_REG_SBSR_REC_MAX_COUNT / (MLXSW_SP_SB_TC_COUNT * 2))

struct mlxsw_sp_sb_sr_occ_query_cb_ctx {
	u8 masked_count;
	u8 local_port_1;
};

static void mlxsw_sp_sb_sr_occ_query_cb(struct mlxsw_core *mlxsw_core,
					char *sbsr_pl, size_t sbsr_pl_len,
					unsigned long cb_priv)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
	struct mlxsw_sp_sb_sr_occ_query_cb_ctx cb_ctx;
	u8 masked_count;
	u8 local_port;
	int rec_index = 0;
	struct mlxsw_sp_sb_cm *cm;
	int i;

	memcpy(&cb_ctx, &cb_priv, sizeof(cb_ctx));

	masked_count = 0;
	for (local_port = cb_ctx.local_port_1;
	     local_port < MLXSW_PORT_MAX_PORTS; local_port++) {
		if (!mlxsw_sp->ports[local_port])
			continue;
		for (i = 0; i < MLXSW_SP_SB_TC_COUNT; i++) {
			cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port, i,
						MLXSW_REG_SBXX_DIR_INGRESS);
			mlxsw_reg_sbsr_rec_unpack(sbsr_pl, rec_index++,
						  &cm->occ.cur, &cm->occ.max);
		}
		if (++masked_count == cb_ctx.masked_count)
			break;
	}
	masked_count = 0;
	for (local_port = cb_ctx.local_port_1;
	     local_port < MLXSW_PORT_MAX_PORTS; local_port++) {
		if (!mlxsw_sp->ports[local_port])
			continue;
		for (i = 0; i < MLXSW_SP_SB_TC_COUNT; i++) {
			cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port, i,
						MLXSW_REG_SBXX_DIR_EGRESS);
			mlxsw_reg_sbsr_rec_unpack(sbsr_pl, rec_index++,
						  &cm->occ.cur, &cm->occ.max);
		}
		if (++masked_count == cb_ctx.masked_count)
			break;
	}
}

int mlxsw_sp_sb_occ_snapshot(struct mlxsw_core *mlxsw_core,
			     unsigned int sb_index)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
	struct mlxsw_sp_sb_sr_occ_query_cb_ctx cb_ctx;
	unsigned long cb_priv;
	LIST_HEAD(bulk_list);
	char *sbsr_pl;
	u8 masked_count;
	u8 local_port_1;
	u8 local_port = 0;
	int i;
	int err;
	int err2;

	sbsr_pl = kmalloc(MLXSW_REG_SBSR_LEN, GFP_KERNEL);
	if (!sbsr_pl)
		return -ENOMEM;

next_batch:
	local_port++;
	local_port_1 = local_port;
	masked_count = 0;
	mlxsw_reg_sbsr_pack(sbsr_pl, false);
	for (i = 0; i < MLXSW_SP_SB_TC_COUNT; i++) {
		mlxsw_reg_sbsr_pg_buff_mask_set(sbsr_pl, i, 1);
		mlxsw_reg_sbsr_tclass_mask_set(sbsr_pl, i, 1);
	}
	for (; local_port < MLXSW_PORT_MAX_PORTS; local_port++) {
		if (!mlxsw_sp->ports[local_port])
			continue;
		mlxsw_reg_sbsr_ingress_port_mask_set(sbsr_pl, local_port, 1);
		mlxsw_reg_sbsr_egress_port_mask_set(sbsr_pl, local_port, 1);
		for (i = 0; i < MLXSW_SP_SB_POOL_COUNT; i++) {
			err = mlxsw_sp_sb_pm_occ_query(mlxsw_sp, local_port, i,
						       MLXSW_REG_SBXX_DIR_INGRESS,
						       &bulk_list);
			if (err)
				goto out;
			err = mlxsw_sp_sb_pm_occ_query(mlxsw_sp, local_port, i,
						       MLXSW_REG_SBXX_DIR_EGRESS,
						       &bulk_list);
			if (err)
				goto out;
		}
		if (++masked_count == MASKED_COUNT_MAX)
			goto do_query;
	}

do_query:
	cb_ctx.masked_count = masked_count;
	cb_ctx.local_port_1 = local_port_1;
	memcpy(&cb_priv, &cb_ctx, sizeof(cb_ctx));
	err = mlxsw_reg_trans_query(mlxsw_core, MLXSW_REG(sbsr), sbsr_pl,
				    &bulk_list, mlxsw_sp_sb_sr_occ_query_cb,
				    cb_priv);
	if (err)
		goto out;
	if (local_port < MLXSW_PORT_MAX_PORTS)
		goto next_batch;

out:
	err2 = mlxsw_reg_trans_bulk_wait(&bulk_list);
	if (!err)
		err = err2;
	kfree(sbsr_pl);
	return err;
}

int mlxsw_sp_sb_occ_max_clear(struct mlxsw_core *mlxsw_core,
			      unsigned int sb_index)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
	LIST_HEAD(bulk_list);
	char *sbsr_pl;
	unsigned int masked_count;
	u8 local_port = 0;
	int i;
	int err;
	int err2;

	sbsr_pl = kmalloc(MLXSW_REG_SBSR_LEN, GFP_KERNEL);
	if (!sbsr_pl)
		return -ENOMEM;

next_batch:
	local_port++;
	masked_count = 0;
	mlxsw_reg_sbsr_pack(sbsr_pl, true);
	for (i = 0; i < MLXSW_SP_SB_TC_COUNT; i++) {
		mlxsw_reg_sbsr_pg_buff_mask_set(sbsr_pl, i, 1);
		mlxsw_reg_sbsr_tclass_mask_set(sbsr_pl, i, 1);
	}
	for (; local_port < MLXSW_PORT_MAX_PORTS; local_port++) {
		if (!mlxsw_sp->ports[local_port])
			continue;
		mlxsw_reg_sbsr_ingress_port_mask_set(sbsr_pl, local_port, 1);
		mlxsw_reg_sbsr_egress_port_mask_set(sbsr_pl, local_port, 1);
		for (i = 0; i < MLXSW_SP_SB_POOL_COUNT; i++) {
			err = mlxsw_sp_sb_pm_occ_clear(mlxsw_sp, local_port, i,
						       MLXSW_REG_SBXX_DIR_INGRESS,
						       &bulk_list);
			if (err)
				goto out;
			err = mlxsw_sp_sb_pm_occ_clear(mlxsw_sp, local_port, i,
						       MLXSW_REG_SBXX_DIR_EGRESS,
						       &bulk_list);
			if (err)
				goto out;
		}
		if (++masked_count == MASKED_COUNT_MAX)
			goto do_query;
	}

do_query:
	err = mlxsw_reg_trans_query(mlxsw_core, MLXSW_REG(sbsr), sbsr_pl,
				    &bulk_list, NULL, 0);
	if (err)
		goto out;
	if (local_port < MLXSW_PORT_MAX_PORTS)
		goto next_batch;

out:
	err2 = mlxsw_reg_trans_bulk_wait(&bulk_list);
	if (!err)
		err = err2;
	kfree(sbsr_pl);
	return err;
}

int mlxsw_sp_sb_occ_port_pool_get(struct mlxsw_core_port *mlxsw_core_port,
				  unsigned int sb_index, u16 pool_index,
				  u32 *p_cur, u32 *p_max)
{
	struct mlxsw_sp_port *mlxsw_sp_port =
			mlxsw_core_port_driver_priv(mlxsw_core_port);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	u8 local_port = mlxsw_sp_port->local_port;
	u8 pool = pool_get(pool_index);
	enum mlxsw_reg_sbxx_dir dir = dir_get(pool_index);
	struct mlxsw_sp_sb_pm *pm = mlxsw_sp_sb_pm_get(mlxsw_sp, local_port,
						       pool, dir);

	*p_cur = MLXSW_SP_CELLS_TO_BYTES(pm->occ.cur);
	*p_max = MLXSW_SP_CELLS_TO_BYTES(pm->occ.max);
	return 0;
}

int mlxsw_sp_sb_occ_tc_port_bind_get(struct mlxsw_core_port *mlxsw_core_port,
				     unsigned int sb_index, u16 tc_index,
				     enum devlink_sb_pool_type pool_type,
				     u32 *p_cur, u32 *p_max)
{
	struct mlxsw_sp_port *mlxsw_sp_port =
			mlxsw_core_port_driver_priv(mlxsw_core_port);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	u8 local_port = mlxsw_sp_port->local_port;
	u8 pg_buff = tc_index;
	enum mlxsw_reg_sbxx_dir dir = pool_type;
	struct mlxsw_sp_sb_cm *cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port,
						       pg_buff, dir);

	*p_cur = MLXSW_SP_CELLS_TO_BYTES(cm->occ.cur);
	*p_max = MLXSW_SP_CELLS_TO_BYTES(cm->occ.max);
	return 0;
}