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
|
/*-
* Copyright 2007-2009 Solarflare Communications Inc. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "efsys.h"
#include "efx.h"
#include "efx_types.h"
#include "efx_regs.h"
#include "efx_impl.h"
__checkReturn int
efx_rx_init(
__in efx_nic_t *enp)
{
efx_oword_t oword;
unsigned int index;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
if (!(enp->en_mod_flags & EFX_MOD_EV)) {
rc = EINVAL;
goto fail1;
}
if (enp->en_mod_flags & EFX_MOD_RX) {
rc = EINVAL;
goto fail2;
}
EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_DESC_PUSH_EN, 0);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, 0);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, 0x3000 / 32);
EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
/* Zero the RSS table */
for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS;
index++) {
EFX_ZERO_OWORD(oword);
EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
index, &oword);
}
enp->en_mod_flags |= EFX_MOD_RX;
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#if EFSYS_OPT_RX_HDR_SPLIT
__checkReturn int
efx_rx_hdr_split_enable(
__in efx_nic_t *enp,
__in unsigned int hdr_buf_size,
__in unsigned int pld_buf_size)
{
unsigned int nhdr32;
unsigned int npld32;
efx_oword_t oword;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFSYS_ASSERT3U(enp->en_family, >=, EFX_FAMILY_SIENA);
nhdr32 = hdr_buf_size / 32;
if ((nhdr32 == 0) ||
(nhdr32 >= (1 << FRF_CZ_RX_HDR_SPLIT_HDR_BUF_SIZE_WIDTH)) ||
((hdr_buf_size % 32) != 0)) {
rc = EINVAL;
goto fail1;
}
npld32 = pld_buf_size / 32;
if ((npld32 == 0) ||
(npld32 >= (1 << FRF_CZ_RX_HDR_SPLIT_PLD_BUF_SIZE_WIDTH)) ||
((pld_buf_size % 32) != 0)) {
rc = EINVAL;
goto fail2;
}
if (enp->en_rx_qcount > 0) {
rc = EBUSY;
goto fail3;
}
EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
EFX_SET_OWORD_FIELD(oword, FRF_CZ_RX_HDR_SPLIT_EN, 1);
EFX_SET_OWORD_FIELD(oword, FRF_CZ_RX_HDR_SPLIT_HDR_BUF_SIZE, nhdr32);
EFX_SET_OWORD_FIELD(oword, FRF_CZ_RX_HDR_SPLIT_PLD_BUF_SIZE, npld32);
EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
return (0);
fail3:
EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#endif /* EFSYS_OPT_RX_HDR_SPLIT */
#if EFSYS_OPT_RX_SCATTER
__checkReturn int
efx_rx_scatter_enable(
__in efx_nic_t *enp,
__in unsigned int buf_size)
{
unsigned int nbuf32;
efx_oword_t oword;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFSYS_ASSERT3U(enp->en_family, >=, EFX_FAMILY_FALCON);
nbuf32 = buf_size / 32;
if ((nbuf32 == 0) ||
(nbuf32 >= (1 << FRF_BZ_RX_USR_BUF_SIZE_WIDTH)) ||
((buf_size % 32) != 0)) {
rc = EINVAL;
goto fail1;
}
if (enp->en_rx_qcount > 0) {
rc = EBUSY;
goto fail2;
}
/* Set scatter buffer size */
EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, nbuf32);
EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
/* Enable scatter for packets not matching a filter */
EFX_BAR_READO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_SCATTER_ENBL_NO_MATCH_Q, 1);
EFX_BAR_WRITEO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#endif /* EFSYS_OPT_RX_SCATTER */
#define EFX_RX_LFSR_HASH(_enp, _insert) \
do { \
efx_oword_t oword; \
\
EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, \
(_insert) ? 1 : 0); \
EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword); \
\
if ((_enp)->en_family == EFX_FAMILY_SIENA) { \
EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, \
&oword); \
EFX_SET_OWORD_FIELD(oword, \
FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 0); \
EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, \
&oword); \
} \
\
_NOTE(CONSTANTCONDITION) \
} while (B_FALSE)
#define EFX_RX_TOEPLITZ_IPV4_HASH(_enp, _insert, _ip, _tcp) \
do { \
efx_oword_t oword; \
\
EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 1); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, \
(_ip) ? 1 : 0); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, \
(_tcp) ? 0 : 1); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, \
(_insert) ? 1 : 0); \
EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword); \
\
_NOTE(CONSTANTCONDITION) \
} while (B_FALSE)
#define EFX_RX_TOEPLITZ_IPV6_HASH(_enp, _ip, _tcp, _rc) \
do { \
efx_oword_t oword; \
\
if ((_enp)->en_family == EFX_FAMILY_FALCON) { \
(_rc) = ((_ip) || (_tcp)) ? ENOTSUP : 0; \
break; \
} \
\
EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword); \
EFX_SET_OWORD_FIELD(oword, \
FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1); \
EFX_SET_OWORD_FIELD(oword, \
FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, (_ip) ? 1 : 0); \
EFX_SET_OWORD_FIELD(oword, \
FRF_CZ_RX_RSS_IPV6_TCP_SUPPRESS, (_tcp) ? 0 : 1); \
EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword); \
\
(_rc) = 0; \
\
_NOTE(CONSTANTCONDITION) \
} while (B_FALSE)
#if EFSYS_OPT_RX_SCALE
__checkReturn int
efx_rx_scale_mode_set(
__in efx_nic_t *enp,
__in efx_rx_hash_alg_t alg,
__in efx_rx_hash_type_t type,
__in boolean_t insert)
{
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFSYS_ASSERT3U(enp->en_family, >=, EFX_FAMILY_FALCON);
switch (alg) {
case EFX_RX_HASHALG_LFSR:
EFX_RX_LFSR_HASH(enp, insert);
break;
case EFX_RX_HASHALG_TOEPLITZ:
EFX_RX_TOEPLITZ_IPV4_HASH(enp, insert,
type & (1 << EFX_RX_HASH_IPV4),
type & (1 << EFX_RX_HASH_TCPIPV4));
EFX_RX_TOEPLITZ_IPV6_HASH(enp,
type & (1 << EFX_RX_HASH_IPV6),
type & (1 << EFX_RX_HASH_TCPIPV6),
rc);
if (rc != 0)
goto fail1;
break;
default:
rc = EINVAL;
goto fail2;
}
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
EFX_RX_LFSR_HASH(enp, B_FALSE);
return (rc);
}
#endif
#if EFSYS_OPT_RX_SCALE
__checkReturn int
efx_rx_scale_toeplitz_ipv4_key_set(
__in efx_nic_t *enp,
__in_ecount(n) uint8_t *key,
__in size_t n)
{
efx_oword_t oword;
unsigned int byte;
unsigned int offset;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
byte = 0;
/* Write toeplitz hash key */
EFX_ZERO_OWORD(oword);
for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
offset > 0 && byte < n;
--offset)
oword.eo_u8[offset - 1] = key[byte++];
EFX_BAR_WRITEO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
byte = 0;
/* Verify toeplitz hash key */
EFX_BAR_READO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
offset > 0 && byte < n;
--offset) {
if (oword.eo_u8[offset - 1] != key[byte++]) {
rc = EFAULT;
goto fail1;
}
}
return (0);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#endif
#if EFSYS_OPT_RX_SCALE
__checkReturn int
efx_rx_scale_toeplitz_ipv6_key_set(
__in efx_nic_t *enp,
__in_ecount(n) uint8_t *key,
__in size_t n)
{
efx_oword_t oword;
unsigned int byte;
int offset;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
byte = 0;
/* Write toeplitz hash key 3 */
EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
offset > 0 && byte < n;
--offset)
oword.eo_u8[offset - 1] = key[byte++];
EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
/* Write toeplitz hash key 2 */
EFX_ZERO_OWORD(oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
offset > 0 && byte < n;
--offset)
oword.eo_u8[offset - 1] = key[byte++];
EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
/* Write toeplitz hash key 1 */
EFX_ZERO_OWORD(oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
offset > 0 && byte < n;
--offset)
oword.eo_u8[offset - 1] = key[byte++];
EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
byte = 0;
/* Verify toeplitz hash key 3 */
EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
offset > 0 && byte < n;
--offset) {
if (oword.eo_u8[offset - 1] != key[byte++]) {
rc = EFAULT;
goto fail1;
}
}
/* Verify toeplitz hash key 2 */
EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
offset > 0 && byte < n;
--offset) {
if (oword.eo_u8[offset - 1] != key[byte++]) {
rc = EFAULT;
goto fail2;
}
}
/* Verify toeplitz hash key 1 */
EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
offset > 0 && byte < n;
--offset) {
if (oword.eo_u8[offset - 1] != key[byte++]) {
rc = EFAULT;
goto fail3;
}
}
return (0);
fail3:
EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#endif
#if EFSYS_OPT_RX_SCALE
__checkReturn int
efx_rx_scale_tbl_set(
__in efx_nic_t *enp,
__in_ecount(n) unsigned int *table,
__in size_t n)
{
efx_oword_t oword;
int index;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFX_STATIC_ASSERT(EFX_RSS_TBL_SIZE == FR_BZ_RX_INDIRECTION_TBL_ROWS);
EFX_STATIC_ASSERT(EFX_MAXRSS == (1 << FRF_BZ_IT_QUEUE_WIDTH));
if (n > FR_BZ_RX_INDIRECTION_TBL_ROWS) {
rc = EINVAL;
goto fail1;
}
for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS; index++) {
uint32_t byte;
/* Calculate the entry to place in the table */
byte = (uint32_t)table[index % n];
EFSYS_PROBE2(table, int, index, uint32_t, byte);
EFX_POPULATE_OWORD_1(oword, FRF_BZ_IT_QUEUE, byte);
/* Write the table */
EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
index, &oword);
}
for (index = FR_BZ_RX_INDIRECTION_TBL_ROWS - 1; index >= 0; --index) {
uint32_t byte;
/* Determine if we're starting a new batch */
byte = (uint32_t)table[index % n];
/* Read the table */
EFX_BAR_TBL_READO(enp, FR_BZ_RX_INDIRECTION_TBL,
index, &oword);
/* Verify the entry */
if (EFX_OWORD_FIELD(oword, FRF_BZ_IT_QUEUE) != byte) {
rc = EFAULT;
goto fail2;
}
}
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#endif
#if EFSYS_OPT_FILTER
extern __checkReturn int
efx_rx_filter_insert(
__in efx_rxq_t *erp,
__inout efx_filter_spec_t *spec)
{
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
EFSYS_ASSERT3P(spec, !=, NULL);
spec->efs_dmaq_id = (uint16_t)erp->er_index;
return (efx_filter_insert_filter(erp->er_enp, spec, B_FALSE));
}
#endif
#if EFSYS_OPT_FILTER
extern __checkReturn int
efx_rx_filter_remove(
__in efx_rxq_t *erp,
__inout efx_filter_spec_t *spec)
{
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
EFSYS_ASSERT3P(spec, !=, NULL);
spec->efs_dmaq_id = (uint16_t)erp->er_index;
return (efx_filter_remove_filter(erp->er_enp, spec));
}
#endif
extern void
efx_rx_qpost(
__in efx_rxq_t *erp,
__in_ecount(n) efsys_dma_addr_t *addrp,
__in size_t size,
__in unsigned int n,
__in unsigned int completed,
__in unsigned int added)
{
efx_qword_t qword;
unsigned int i;
unsigned int offset;
unsigned int id;
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
/* The client driver must not overfill the queue */
EFSYS_ASSERT3U(added - completed + n, <=,
EFX_RXQ_LIMIT(erp->er_mask + 1));
id = added & (erp->er_mask);
for (i = 0; i < n; i++) {
EFSYS_PROBE4(rx_post, unsigned int, erp->er_index,
unsigned int, id, efsys_dma_addr_t, addrp[i],
size_t, size);
EFX_POPULATE_QWORD_3(qword,
FSF_AZ_RX_KER_BUF_SIZE, (uint32_t)(size),
FSF_AZ_RX_KER_BUF_ADDR_DW0,
(uint32_t)(addrp[i] & 0xffffffff),
FSF_AZ_RX_KER_BUF_ADDR_DW1,
(uint32_t)(addrp[i] >> 32));
offset = id * sizeof (efx_qword_t);
EFSYS_MEM_WRITEQ(erp->er_esmp, offset, &qword);
id = (id + 1) & (erp->er_mask);
}
}
void
efx_rx_qpush(
__in efx_rxq_t *erp,
__in unsigned int added)
{
efx_nic_t *enp = erp->er_enp;
uint32_t wptr;
efx_oword_t oword;
efx_dword_t dword;
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
/* Guarantee ordering of memory (descriptors) and PIO (doorbell) */
EFSYS_PIO_WRITE_BARRIER();
/* Push the populated descriptors out */
wptr = added & erp->er_mask;
EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DESC_WPTR, wptr);
/* Only write the third DWORD */
EFX_POPULATE_DWORD_1(dword,
EFX_DWORD_0, EFX_OWORD_FIELD(oword, EFX_DWORD_3));
EFX_BAR_TBL_WRITED3(enp, FR_BZ_RX_DESC_UPD_REGP0,
erp->er_index, &dword, B_FALSE);
}
void
efx_rx_qflush(
__in efx_rxq_t *erp)
{
efx_nic_t *enp = erp->er_enp;
efx_oword_t oword;
uint32_t label;
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
label = erp->er_index;
/* Flush the queue */
EFX_POPULATE_OWORD_2(oword, FRF_AZ_RX_FLUSH_DESCQ_CMD, 1,
FRF_AZ_RX_FLUSH_DESCQ, label);
EFX_BAR_WRITEO(enp, FR_AZ_RX_FLUSH_DESCQ_REG, &oword);
}
void
efx_rx_qenable(
__in efx_rxq_t *erp)
{
efx_nic_t *enp = erp->er_enp;
efx_oword_t oword;
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
EFX_BAR_TBL_READO(enp, FR_AZ_RX_DESC_PTR_TBL,
erp->er_index, &oword);
EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DC_HW_RPTR, 0);
EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_HW_RPTR, 0);
EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_EN, 1);
EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
erp->er_index, &oword);
}
__checkReturn int
efx_rx_qcreate(
__in efx_nic_t *enp,
__in unsigned int index,
__in unsigned int label,
__in efx_rxq_type_t type,
__in efsys_mem_t *esmp,
__in size_t n,
__in uint32_t id,
__in efx_evq_t *eep,
__deref_out efx_rxq_t **erpp)
{
efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
efx_rxq_t *erp;
efx_oword_t oword;
uint32_t size;
boolean_t split;
boolean_t jumbo;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFX_STATIC_ASSERT(EFX_EV_RX_NLABELS ==
(1 << FRF_AZ_RX_DESCQ_LABEL_WIDTH));
EFSYS_ASSERT3U(label, <, EFX_EV_RX_NLABELS);
EFSYS_ASSERT3U(enp->en_rx_qcount + 1, <, encp->enc_rxq_limit);
if (!ISP2(n) || !(n & EFX_RXQ_NDESCS_MASK)) {
rc = EINVAL;
goto fail1;
}
if (index >= encp->enc_rxq_limit) {
rc = EINVAL;
goto fail2;
}
for (size = 0; (1 << size) <= (EFX_RXQ_MAXNDESCS / EFX_RXQ_MINNDESCS);
size++)
if ((1 << size) == (int)(n / EFX_RXQ_MINNDESCS))
break;
if (id + (1 << size) >= encp->enc_buftbl_limit) {
rc = EINVAL;
goto fail3;
}
switch (type) {
case EFX_RXQ_TYPE_DEFAULT:
split = B_FALSE;
jumbo = B_FALSE;
break;
#if EFSYS_OPT_RX_HDR_SPLIT
case EFX_RXQ_TYPE_SPLIT_HEADER:
if ((enp->en_family < EFX_FAMILY_SIENA) || ((index & 1) != 0)) {
rc = EINVAL;
goto fail4;
}
split = B_TRUE;
jumbo = B_TRUE;
break;
case EFX_RXQ_TYPE_SPLIT_PAYLOAD:
if ((enp->en_family < EFX_FAMILY_SIENA) || ((index & 1) == 0)) {
rc = EINVAL;
goto fail4;
}
split = B_FALSE;
jumbo = B_TRUE;
break;
#endif /* EFSYS_OPT_RX_HDR_SPLIT */
#if EFSYS_OPT_RX_SCATTER
case EFX_RXQ_TYPE_SCATTER:
if (enp->en_family < EFX_FAMILY_SIENA) {
rc = EINVAL;
goto fail4;
}
split = B_FALSE;
jumbo = B_TRUE;
break;
#endif /* EFSYS_OPT_RX_SCATTER */
default:
rc = EINVAL;
goto fail4;
}
/* Allocate an RXQ object */
EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (efx_rxq_t), erp);
if (erp == NULL) {
rc = ENOMEM;
goto fail5;
}
erp->er_magic = EFX_RXQ_MAGIC;
erp->er_enp = enp;
erp->er_index = index;
erp->er_mask = n - 1;
erp->er_esmp = esmp;
/* Set up the new descriptor queue */
EFX_POPULATE_OWORD_10(oword,
FRF_CZ_RX_HDR_SPLIT, split,
FRF_AZ_RX_ISCSI_DDIG_EN, 0,
FRF_AZ_RX_ISCSI_HDIG_EN, 0,
FRF_AZ_RX_DESCQ_BUF_BASE_ID, id,
FRF_AZ_RX_DESCQ_EVQ_ID, eep->ee_index,
FRF_AZ_RX_DESCQ_OWNER_ID, 0,
FRF_AZ_RX_DESCQ_LABEL, label,
FRF_AZ_RX_DESCQ_SIZE, size,
FRF_AZ_RX_DESCQ_TYPE, 0,
FRF_AZ_RX_DESCQ_JUMBO, jumbo);
EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
erp->er_index, &oword);
enp->en_rx_qcount++;
*erpp = erp;
return (0);
fail5:
EFSYS_PROBE(fail5);
fail4:
EFSYS_PROBE(fail4);
fail3:
EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
void
efx_rx_qdestroy(
__in efx_rxq_t *erp)
{
efx_nic_t *enp = erp->er_enp;
efx_oword_t oword;
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
EFSYS_ASSERT(enp->en_rx_qcount != 0);
--enp->en_rx_qcount;
/* Purge descriptor queue */
EFX_ZERO_OWORD(oword);
EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
erp->er_index, &oword);
/* Free the RXQ object */
EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
}
void
efx_rx_fini(
__in efx_nic_t *enp)
{
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFSYS_ASSERT3U(enp->en_rx_qcount, ==, 0);
enp->en_mod_flags &= ~EFX_MOD_RX;
}
|