2 * Copyright (c) 2007-2016 Solarflare Communications Inc.
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6 * modification, are permitted provided that the following conditions are met:
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9 * this list of conditions and the following disclaimer.
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11 * this list of conditions and the following disclaimer in the documentation
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14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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37 static __checkReturn efx_rc_t
45 static __checkReturn efx_rc_t
46 siena_rx_prefix_pktlen(
49 __out uint16_t *lengthp);
54 __in_ecount(n) efsys_dma_addr_t *addrp,
57 __in unsigned int completed,
58 __in unsigned int added);
63 __in unsigned int added,
64 __inout unsigned int *pushedp);
66 static __checkReturn efx_rc_t
74 static __checkReturn efx_rc_t
77 __in unsigned int index,
78 __in unsigned int label,
79 __in efx_rxq_type_t type,
80 __in efsys_mem_t *esmp,
90 #endif /* EFSYS_OPT_SIENA */
94 static const efx_rx_ops_t __efx_rx_siena_ops = {
95 siena_rx_init, /* erxo_init */
96 siena_rx_fini, /* erxo_fini */
97 siena_rx_prefix_pktlen, /* erxo_prefix_pktlen */
98 siena_rx_qpost, /* erxo_qpost */
99 siena_rx_qpush, /* erxo_qpush */
100 siena_rx_qflush, /* erxo_qflush */
101 siena_rx_qenable, /* erxo_qenable */
102 siena_rx_qcreate, /* erxo_qcreate */
103 siena_rx_qdestroy, /* erxo_qdestroy */
105 #endif /* EFSYS_OPT_SIENA */
108 __checkReturn efx_rc_t
110 __inout efx_nic_t *enp)
112 const efx_rx_ops_t *erxop;
115 EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
116 EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
118 if (!(enp->en_mod_flags & EFX_MOD_EV)) {
123 if (enp->en_mod_flags & EFX_MOD_RX) {
128 switch (enp->en_family) {
130 case EFX_FAMILY_SIENA:
131 erxop = &__efx_rx_siena_ops;
133 #endif /* EFSYS_OPT_SIENA */
141 if ((rc = erxop->erxo_init(enp)) != 0)
144 enp->en_erxop = erxop;
145 enp->en_mod_flags |= EFX_MOD_RX;
155 EFSYS_PROBE1(fail1, efx_rc_t, rc);
157 enp->en_erxop = NULL;
158 enp->en_mod_flags &= ~EFX_MOD_RX;
166 const efx_rx_ops_t *erxop = enp->en_erxop;
168 EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
169 EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
170 EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
171 EFSYS_ASSERT3U(enp->en_rx_qcount, ==, 0);
173 erxop->erxo_fini(enp);
175 enp->en_erxop = NULL;
176 enp->en_mod_flags &= ~EFX_MOD_RX;
182 __in_ecount(n) efsys_dma_addr_t *addrp,
185 __in unsigned int completed,
186 __in unsigned int added)
188 efx_nic_t *enp = erp->er_enp;
189 const efx_rx_ops_t *erxop = enp->en_erxop;
191 EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
193 erxop->erxo_qpost(erp, addrp, size, n, completed, added);
199 __in unsigned int added,
200 __inout unsigned int *pushedp)
202 efx_nic_t *enp = erp->er_enp;
203 const efx_rx_ops_t *erxop = enp->en_erxop;
205 EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
207 erxop->erxo_qpush(erp, added, pushedp);
210 __checkReturn efx_rc_t
214 efx_nic_t *enp = erp->er_enp;
215 const efx_rx_ops_t *erxop = enp->en_erxop;
218 EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
220 if ((rc = erxop->erxo_qflush(erp)) != 0)
226 EFSYS_PROBE1(fail1, efx_rc_t, rc);
235 efx_nic_t *enp = erp->er_enp;
236 const efx_rx_ops_t *erxop = enp->en_erxop;
238 EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
240 erxop->erxo_qenable(erp);
243 __checkReturn efx_rc_t
246 __in unsigned int index,
247 __in unsigned int label,
248 __in efx_rxq_type_t type,
249 __in efsys_mem_t *esmp,
253 __deref_out efx_rxq_t **erpp)
255 const efx_rx_ops_t *erxop = enp->en_erxop;
259 EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
260 EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
262 /* Allocate an RXQ object */
263 EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (efx_rxq_t), erp);
270 erp->er_magic = EFX_RXQ_MAGIC;
272 erp->er_index = index;
273 erp->er_mask = n - 1;
276 if ((rc = erxop->erxo_qcreate(enp, index, label, type, esmp, n, id,
288 EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
290 EFSYS_PROBE1(fail1, efx_rc_t, rc);
299 efx_nic_t *enp = erp->er_enp;
300 const efx_rx_ops_t *erxop = enp->en_erxop;
302 EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
304 erxop->erxo_qdestroy(erp);
307 __checkReturn efx_rc_t
308 efx_pseudo_hdr_pkt_length_get(
310 __in uint8_t *buffer,
311 __out uint16_t *lengthp)
313 efx_nic_t *enp = erp->er_enp;
314 const efx_rx_ops_t *erxop = enp->en_erxop;
316 EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
318 return (erxop->erxo_prefix_pktlen(enp, buffer, lengthp));
323 static __checkReturn efx_rc_t
330 EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
332 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_DESC_PUSH_EN, 0);
333 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0);
334 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0);
335 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0);
336 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, 0);
337 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, 0x3000 / 32);
338 EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
340 /* Zero the RSS table */
341 for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS;
343 EFX_ZERO_OWORD(oword);
344 EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
345 index, &oword, B_TRUE);
352 #define EFX_RX_LFSR_HASH(_enp, _insert) \
356 EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword); \
357 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0); \
358 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0); \
359 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0); \
360 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, \
361 (_insert) ? 1 : 0); \
362 EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword); \
364 if ((_enp)->en_family == EFX_FAMILY_SIENA) { \
365 EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, \
367 EFX_SET_OWORD_FIELD(oword, \
368 FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 0); \
369 EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, \
373 _NOTE(CONSTANTCONDITION) \
376 #define EFX_RX_TOEPLITZ_IPV4_HASH(_enp, _insert, _ip, _tcp) \
380 EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword); \
381 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 1); \
382 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, \
384 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, \
386 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, \
387 (_insert) ? 1 : 0); \
388 EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword); \
390 _NOTE(CONSTANTCONDITION) \
393 #define EFX_RX_TOEPLITZ_IPV6_HASH(_enp, _ip, _tcp, _rc) \
397 EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword); \
398 EFX_SET_OWORD_FIELD(oword, \
399 FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1); \
400 EFX_SET_OWORD_FIELD(oword, \
401 FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, (_ip) ? 1 : 0); \
402 EFX_SET_OWORD_FIELD(oword, \
403 FRF_CZ_RX_RSS_IPV6_TCP_SUPPRESS, (_tcp) ? 0 : 1); \
404 EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword); \
408 _NOTE(CONSTANTCONDITION) \
413 * Falcon/Siena pseudo-header
414 * --------------------------
416 * Receive packets are prefixed by an optional 16 byte pseudo-header.
417 * The pseudo-header is a byte array of one of the forms:
419 * 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
420 * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.TT.TT.TT.TT
421 * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.LL.LL
424 * TT.TT.TT.TT Toeplitz hash (32-bit big-endian)
425 * LL.LL LFSR hash (16-bit big-endian)
428 static __checkReturn efx_rc_t
429 siena_rx_prefix_pktlen(
431 __in uint8_t *buffer,
432 __out uint16_t *lengthp)
434 _NOTE(ARGUNUSED(enp, buffer, lengthp))
436 /* Not supported by Falcon/Siena hardware */
445 __in_ecount(n) efsys_dma_addr_t *addrp,
448 __in unsigned int completed,
449 __in unsigned int added)
456 /* The client driver must not overfill the queue */
457 EFSYS_ASSERT3U(added - completed + n, <=,
458 EFX_RXQ_LIMIT(erp->er_mask + 1));
460 id = added & (erp->er_mask);
461 for (i = 0; i < n; i++) {
462 EFSYS_PROBE4(rx_post, unsigned int, erp->er_index,
463 unsigned int, id, efsys_dma_addr_t, addrp[i],
466 EFX_POPULATE_QWORD_3(qword,
467 FSF_AZ_RX_KER_BUF_SIZE, (uint32_t)(size),
468 FSF_AZ_RX_KER_BUF_ADDR_DW0,
469 (uint32_t)(addrp[i] & 0xffffffff),
470 FSF_AZ_RX_KER_BUF_ADDR_DW1,
471 (uint32_t)(addrp[i] >> 32));
473 offset = id * sizeof (efx_qword_t);
474 EFSYS_MEM_WRITEQ(erp->er_esmp, offset, &qword);
476 id = (id + 1) & (erp->er_mask);
483 __in unsigned int added,
484 __inout unsigned int *pushedp)
486 efx_nic_t *enp = erp->er_enp;
487 unsigned int pushed = *pushedp;
492 /* All descriptors are pushed */
495 /* Push the populated descriptors out */
496 wptr = added & erp->er_mask;
498 EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DESC_WPTR, wptr);
500 /* Only write the third DWORD */
501 EFX_POPULATE_DWORD_1(dword,
502 EFX_DWORD_0, EFX_OWORD_FIELD(oword, EFX_DWORD_3));
504 /* Guarantee ordering of memory (descriptors) and PIO (doorbell) */
505 EFX_DMA_SYNC_QUEUE_FOR_DEVICE(erp->er_esmp, erp->er_mask + 1,
506 wptr, pushed & erp->er_mask);
507 EFSYS_PIO_WRITE_BARRIER();
508 EFX_BAR_TBL_WRITED3(enp, FR_BZ_RX_DESC_UPD_REGP0,
509 erp->er_index, &dword, B_FALSE);
512 static __checkReturn efx_rc_t
516 efx_nic_t *enp = erp->er_enp;
520 label = erp->er_index;
522 /* Flush the queue */
523 EFX_POPULATE_OWORD_2(oword, FRF_AZ_RX_FLUSH_DESCQ_CMD, 1,
524 FRF_AZ_RX_FLUSH_DESCQ, label);
525 EFX_BAR_WRITEO(enp, FR_AZ_RX_FLUSH_DESCQ_REG, &oword);
534 efx_nic_t *enp = erp->er_enp;
537 EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
539 EFX_BAR_TBL_READO(enp, FR_AZ_RX_DESC_PTR_TBL,
540 erp->er_index, &oword, B_TRUE);
542 EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DC_HW_RPTR, 0);
543 EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_HW_RPTR, 0);
544 EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_EN, 1);
546 EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
547 erp->er_index, &oword, B_TRUE);
550 static __checkReturn efx_rc_t
553 __in unsigned int index,
554 __in unsigned int label,
555 __in efx_rxq_type_t type,
556 __in efsys_mem_t *esmp,
562 efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
568 _NOTE(ARGUNUSED(esmp))
570 EFX_STATIC_ASSERT(EFX_EV_RX_NLABELS ==
571 (1 << FRF_AZ_RX_DESCQ_LABEL_WIDTH));
572 EFSYS_ASSERT3U(label, <, EFX_EV_RX_NLABELS);
573 EFSYS_ASSERT3U(enp->en_rx_qcount + 1, <, encp->enc_rxq_limit);
575 EFX_STATIC_ASSERT(ISP2(EFX_RXQ_MAXNDESCS));
576 EFX_STATIC_ASSERT(ISP2(EFX_RXQ_MINNDESCS));
578 if (!ISP2(n) || (n < EFX_RXQ_MINNDESCS) || (n > EFX_RXQ_MAXNDESCS)) {
582 if (index >= encp->enc_rxq_limit) {
586 for (size = 0; (1 << size) <= (EFX_RXQ_MAXNDESCS / EFX_RXQ_MINNDESCS);
588 if ((1 << size) == (int)(n / EFX_RXQ_MINNDESCS))
590 if (id + (1 << size) >= encp->enc_buftbl_limit) {
596 case EFX_RXQ_TYPE_DEFAULT:
605 /* Set up the new descriptor queue */
606 EFX_POPULATE_OWORD_7(oword,
607 FRF_AZ_RX_DESCQ_BUF_BASE_ID, id,
608 FRF_AZ_RX_DESCQ_EVQ_ID, eep->ee_index,
609 FRF_AZ_RX_DESCQ_OWNER_ID, 0,
610 FRF_AZ_RX_DESCQ_LABEL, label,
611 FRF_AZ_RX_DESCQ_SIZE, size,
612 FRF_AZ_RX_DESCQ_TYPE, 0,
613 FRF_AZ_RX_DESCQ_JUMBO, jumbo);
615 EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
616 erp->er_index, &oword, B_TRUE);
627 EFSYS_PROBE1(fail1, efx_rc_t, rc);
636 efx_nic_t *enp = erp->er_enp;
639 EFSYS_ASSERT(enp->en_rx_qcount != 0);
642 /* Purge descriptor queue */
643 EFX_ZERO_OWORD(oword);
645 EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
646 erp->er_index, &oword, B_TRUE);
648 /* Free the RXQ object */
649 EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
656 _NOTE(ARGUNUSED(enp))
659 #endif /* EFSYS_OPT_SIENA */