4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
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14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of Intel Corporation nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #include <sys/queue.h>
45 #include <rte_byteorder.h>
46 #include <rte_common.h>
47 #include <rte_cycles.h>
49 #include <rte_debug.h>
50 #include <rte_interrupts.h>
52 #include <rte_memory.h>
53 #include <rte_memzone.h>
54 #include <rte_launch.h>
55 #include <rte_tailq.h>
57 #include <rte_per_lcore.h>
58 #include <rte_lcore.h>
59 #include <rte_atomic.h>
60 #include <rte_branch_prediction.h>
62 #include <rte_mempool.h>
63 #include <rte_malloc.h>
65 #include <rte_ether.h>
66 #include <rte_ethdev.h>
67 #include <rte_prefetch.h>
71 #include <rte_string_fns.h>
72 #include <rte_errno.h>
74 #include "ixgbe_logs.h"
75 #include "ixgbe/ixgbe_api.h"
76 #include "ixgbe/ixgbe_vf.h"
77 #include "ixgbe_ethdev.h"
78 #include "ixgbe/ixgbe_dcb.h"
79 #include "ixgbe/ixgbe_common.h"
80 #include "ixgbe_rxtx.h"
82 #define IXGBE_RSS_OFFLOAD_ALL ( \
88 ETH_RSS_IPV6_TCP_EX | \
93 static inline struct rte_mbuf *
94 rte_rxmbuf_alloc(struct rte_mempool *mp)
98 m = __rte_mbuf_raw_alloc(mp);
99 __rte_mbuf_sanity_check_raw(m, 0);
105 #define RTE_PMD_USE_PREFETCH
108 #ifdef RTE_PMD_USE_PREFETCH
110 * Prefetch a cache line into all cache levels.
112 #define rte_ixgbe_prefetch(p) rte_prefetch0(p)
114 #define rte_ixgbe_prefetch(p) do {} while(0)
117 /*********************************************************************
121 **********************************************************************/
124 * Check for descriptors with their DD bit set and free mbufs.
125 * Return the total number of buffers freed.
127 static inline int __attribute__((always_inline))
128 ixgbe_tx_free_bufs(struct igb_tx_queue *txq)
130 struct igb_tx_entry *txep;
134 /* check DD bit on threshold descriptor */
135 status = txq->tx_ring[txq->tx_next_dd].wb.status;
136 if (! (status & IXGBE_ADVTXD_STAT_DD))
140 * first buffer to free from S/W ring is at index
141 * tx_next_dd - (tx_rs_thresh-1)
143 txep = &(txq->sw_ring[txq->tx_next_dd - (txq->tx_rs_thresh - 1)]);
145 /* free buffers one at a time */
146 if ((txq->txq_flags & (uint32_t)ETH_TXQ_FLAGS_NOREFCOUNT) != 0) {
147 for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) {
148 rte_mempool_put(txep->mbuf->pool, txep->mbuf);
152 for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) {
153 rte_pktmbuf_free_seg(txep->mbuf);
158 /* buffers were freed, update counters */
159 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh);
160 txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh);
161 if (txq->tx_next_dd >= txq->nb_tx_desc)
162 txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
164 return txq->tx_rs_thresh;
167 /* Populate 4 descriptors with data from 4 mbufs */
169 tx4(volatile union ixgbe_adv_tx_desc *txdp, struct rte_mbuf **pkts)
171 uint64_t buf_dma_addr;
175 for (i = 0; i < 4; ++i, ++txdp, ++pkts) {
176 buf_dma_addr = RTE_MBUF_DATA_DMA_ADDR(*pkts);
177 pkt_len = (*pkts)->data_len;
179 /* write data to descriptor */
180 txdp->read.buffer_addr = buf_dma_addr;
181 txdp->read.cmd_type_len =
182 ((uint32_t)DCMD_DTYP_FLAGS | pkt_len);
183 txdp->read.olinfo_status =
184 (pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
185 rte_prefetch0(&(*pkts)->pool);
189 /* Populate 1 descriptor with data from 1 mbuf */
191 tx1(volatile union ixgbe_adv_tx_desc *txdp, struct rte_mbuf **pkts)
193 uint64_t buf_dma_addr;
196 buf_dma_addr = RTE_MBUF_DATA_DMA_ADDR(*pkts);
197 pkt_len = (*pkts)->data_len;
199 /* write data to descriptor */
200 txdp->read.buffer_addr = buf_dma_addr;
201 txdp->read.cmd_type_len =
202 ((uint32_t)DCMD_DTYP_FLAGS | pkt_len);
203 txdp->read.olinfo_status =
204 (pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
205 rte_prefetch0(&(*pkts)->pool);
209 * Fill H/W descriptor ring with mbuf data.
210 * Copy mbuf pointers to the S/W ring.
213 ixgbe_tx_fill_hw_ring(struct igb_tx_queue *txq, struct rte_mbuf **pkts,
216 volatile union ixgbe_adv_tx_desc *txdp = &(txq->tx_ring[txq->tx_tail]);
217 struct igb_tx_entry *txep = &(txq->sw_ring[txq->tx_tail]);
218 const int N_PER_LOOP = 4;
219 const int N_PER_LOOP_MASK = N_PER_LOOP-1;
220 int mainpart, leftover;
224 * Process most of the packets in chunks of N pkts. Any
225 * leftover packets will get processed one at a time.
227 mainpart = (nb_pkts & ((uint32_t) ~N_PER_LOOP_MASK));
228 leftover = (nb_pkts & ((uint32_t) N_PER_LOOP_MASK));
229 for (i = 0; i < mainpart; i += N_PER_LOOP) {
230 /* Copy N mbuf pointers to the S/W ring */
231 for (j = 0; j < N_PER_LOOP; ++j) {
232 (txep + i + j)->mbuf = *(pkts + i + j);
234 tx4(txdp + i, pkts + i);
237 if (unlikely(leftover > 0)) {
238 for (i = 0; i < leftover; ++i) {
239 (txep + mainpart + i)->mbuf = *(pkts + mainpart + i);
240 tx1(txdp + mainpart + i, pkts + mainpart + i);
245 static inline uint16_t
246 tx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
249 struct igb_tx_queue *txq = (struct igb_tx_queue *)tx_queue;
250 volatile union ixgbe_adv_tx_desc *tx_r = txq->tx_ring;
254 * Begin scanning the H/W ring for done descriptors when the
255 * number of available descriptors drops below tx_free_thresh. For
256 * each done descriptor, free the associated buffer.
258 if (txq->nb_tx_free < txq->tx_free_thresh)
259 ixgbe_tx_free_bufs(txq);
261 /* Only use descriptors that are available */
262 nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
263 if (unlikely(nb_pkts == 0))
266 /* Use exactly nb_pkts descriptors */
267 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
270 * At this point, we know there are enough descriptors in the
271 * ring to transmit all the packets. This assumes that each
272 * mbuf contains a single segment, and that no new offloads
273 * are expected, which would require a new context descriptor.
277 * See if we're going to wrap-around. If so, handle the top
278 * of the descriptor ring first, then do the bottom. If not,
279 * the processing looks just like the "bottom" part anyway...
281 if ((txq->tx_tail + nb_pkts) > txq->nb_tx_desc) {
282 n = (uint16_t)(txq->nb_tx_desc - txq->tx_tail);
283 ixgbe_tx_fill_hw_ring(txq, tx_pkts, n);
286 * We know that the last descriptor in the ring will need to
287 * have its RS bit set because tx_rs_thresh has to be
288 * a divisor of the ring size
290 tx_r[txq->tx_next_rs].read.cmd_type_len |=
291 rte_cpu_to_le_32(IXGBE_ADVTXD_DCMD_RS);
292 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
297 /* Fill H/W descriptor ring with mbuf data */
298 ixgbe_tx_fill_hw_ring(txq, tx_pkts + n, (uint16_t)(nb_pkts - n));
299 txq->tx_tail = (uint16_t)(txq->tx_tail + (nb_pkts - n));
302 * Determine if RS bit should be set
303 * This is what we actually want:
304 * if ((txq->tx_tail - 1) >= txq->tx_next_rs)
305 * but instead of subtracting 1 and doing >=, we can just do
306 * greater than without subtracting.
308 if (txq->tx_tail > txq->tx_next_rs) {
309 tx_r[txq->tx_next_rs].read.cmd_type_len |=
310 rte_cpu_to_le_32(IXGBE_ADVTXD_DCMD_RS);
311 txq->tx_next_rs = (uint16_t)(txq->tx_next_rs +
313 if (txq->tx_next_rs >= txq->nb_tx_desc)
314 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
318 * Check for wrap-around. This would only happen if we used
319 * up to the last descriptor in the ring, no more, no less.
321 if (txq->tx_tail >= txq->nb_tx_desc)
324 /* update tail pointer */
326 IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, txq->tx_tail);
332 ixgbe_xmit_pkts_simple(void *tx_queue, struct rte_mbuf **tx_pkts,
337 /* Try to transmit at least chunks of TX_MAX_BURST pkts */
338 if (likely(nb_pkts <= RTE_PMD_IXGBE_TX_MAX_BURST))
339 return tx_xmit_pkts(tx_queue, tx_pkts, nb_pkts);
341 /* transmit more than the max burst, in chunks of TX_MAX_BURST */
345 n = (uint16_t)RTE_MIN(nb_pkts, RTE_PMD_IXGBE_TX_MAX_BURST);
346 ret = tx_xmit_pkts(tx_queue, &(tx_pkts[nb_tx]), n);
347 nb_tx = (uint16_t)(nb_tx + ret);
348 nb_pkts = (uint16_t)(nb_pkts - ret);
357 ixgbe_set_xmit_ctx(struct igb_tx_queue* txq,
358 volatile struct ixgbe_adv_tx_context_desc *ctx_txd,
359 uint64_t ol_flags, uint32_t vlan_macip_lens)
361 uint32_t type_tucmd_mlhl;
362 uint32_t mss_l4len_idx;
366 ctx_idx = txq->ctx_curr;
370 if (ol_flags & PKT_TX_VLAN_PKT) {
371 cmp_mask |= TX_VLAN_CMP_MASK;
374 if (ol_flags & PKT_TX_IP_CKSUM) {
375 type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV4;
376 cmp_mask |= TX_MAC_LEN_CMP_MASK;
379 /* Specify which HW CTX to upload. */
380 mss_l4len_idx = (ctx_idx << IXGBE_ADVTXD_IDX_SHIFT);
381 switch (ol_flags & PKT_TX_L4_MASK) {
382 case PKT_TX_UDP_CKSUM:
383 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_UDP |
384 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
385 mss_l4len_idx |= sizeof(struct udp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
386 cmp_mask |= TX_MACIP_LEN_CMP_MASK;
388 case PKT_TX_TCP_CKSUM:
389 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP |
390 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
391 mss_l4len_idx |= sizeof(struct tcp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
392 cmp_mask |= TX_MACIP_LEN_CMP_MASK;
394 case PKT_TX_SCTP_CKSUM:
395 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_SCTP |
396 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
397 mss_l4len_idx |= sizeof(struct sctp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
398 cmp_mask |= TX_MACIP_LEN_CMP_MASK;
401 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_RSV |
402 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
406 txq->ctx_cache[ctx_idx].flags = ol_flags;
407 txq->ctx_cache[ctx_idx].cmp_mask = cmp_mask;
408 txq->ctx_cache[ctx_idx].vlan_macip_lens.data =
409 vlan_macip_lens & cmp_mask;
411 ctx_txd->type_tucmd_mlhl = rte_cpu_to_le_32(type_tucmd_mlhl);
412 ctx_txd->vlan_macip_lens = rte_cpu_to_le_32(vlan_macip_lens);
413 ctx_txd->mss_l4len_idx = rte_cpu_to_le_32(mss_l4len_idx);
414 ctx_txd->seqnum_seed = 0;
418 * Check which hardware context can be used. Use the existing match
419 * or create a new context descriptor.
421 static inline uint32_t
422 what_advctx_update(struct igb_tx_queue *txq, uint64_t flags,
423 uint32_t vlan_macip_lens)
425 /* If match with the current used context */
426 if (likely((txq->ctx_cache[txq->ctx_curr].flags == flags) &&
427 (txq->ctx_cache[txq->ctx_curr].vlan_macip_lens.data ==
428 (txq->ctx_cache[txq->ctx_curr].cmp_mask & vlan_macip_lens)))) {
429 return txq->ctx_curr;
432 /* What if match with the next context */
434 if (likely((txq->ctx_cache[txq->ctx_curr].flags == flags) &&
435 (txq->ctx_cache[txq->ctx_curr].vlan_macip_lens.data ==
436 (txq->ctx_cache[txq->ctx_curr].cmp_mask & vlan_macip_lens)))) {
437 return txq->ctx_curr;
440 /* Mismatch, use the previous context */
441 return (IXGBE_CTX_NUM);
444 static inline uint32_t
445 tx_desc_cksum_flags_to_olinfo(uint64_t ol_flags)
447 static const uint32_t l4_olinfo[2] = {0, IXGBE_ADVTXD_POPTS_TXSM};
448 static const uint32_t l3_olinfo[2] = {0, IXGBE_ADVTXD_POPTS_IXSM};
451 tmp = l4_olinfo[(ol_flags & PKT_TX_L4_MASK) != PKT_TX_L4_NO_CKSUM];
452 tmp |= l3_olinfo[(ol_flags & PKT_TX_IP_CKSUM) != 0];
456 static inline uint32_t
457 tx_desc_vlan_flags_to_cmdtype(uint64_t ol_flags)
459 static const uint32_t vlan_cmd[2] = {0, IXGBE_ADVTXD_DCMD_VLE};
460 return vlan_cmd[(ol_flags & PKT_TX_VLAN_PKT) != 0];
463 /* Default RS bit threshold values */
464 #ifndef DEFAULT_TX_RS_THRESH
465 #define DEFAULT_TX_RS_THRESH 32
467 #ifndef DEFAULT_TX_FREE_THRESH
468 #define DEFAULT_TX_FREE_THRESH 32
471 /* Reset transmit descriptors after they have been used */
473 ixgbe_xmit_cleanup(struct igb_tx_queue *txq)
475 struct igb_tx_entry *sw_ring = txq->sw_ring;
476 volatile union ixgbe_adv_tx_desc *txr = txq->tx_ring;
477 uint16_t last_desc_cleaned = txq->last_desc_cleaned;
478 uint16_t nb_tx_desc = txq->nb_tx_desc;
479 uint16_t desc_to_clean_to;
480 uint16_t nb_tx_to_clean;
482 /* Determine the last descriptor needing to be cleaned */
483 desc_to_clean_to = (uint16_t)(last_desc_cleaned + txq->tx_rs_thresh);
484 if (desc_to_clean_to >= nb_tx_desc)
485 desc_to_clean_to = (uint16_t)(desc_to_clean_to - nb_tx_desc);
487 /* Check to make sure the last descriptor to clean is done */
488 desc_to_clean_to = sw_ring[desc_to_clean_to].last_id;
489 if (! (txr[desc_to_clean_to].wb.status & IXGBE_TXD_STAT_DD))
491 PMD_TX_FREE_LOG(DEBUG,
492 "TX descriptor %4u is not done"
493 "(port=%d queue=%d)",
495 txq->port_id, txq->queue_id);
496 /* Failed to clean any descriptors, better luck next time */
500 /* Figure out how many descriptors will be cleaned */
501 if (last_desc_cleaned > desc_to_clean_to)
502 nb_tx_to_clean = (uint16_t)((nb_tx_desc - last_desc_cleaned) +
505 nb_tx_to_clean = (uint16_t)(desc_to_clean_to -
508 PMD_TX_FREE_LOG(DEBUG,
509 "Cleaning %4u TX descriptors: %4u to %4u "
510 "(port=%d queue=%d)",
511 nb_tx_to_clean, last_desc_cleaned, desc_to_clean_to,
512 txq->port_id, txq->queue_id);
515 * The last descriptor to clean is done, so that means all the
516 * descriptors from the last descriptor that was cleaned
517 * up to the last descriptor with the RS bit set
518 * are done. Only reset the threshold descriptor.
520 txr[desc_to_clean_to].wb.status = 0;
522 /* Update the txq to reflect the last descriptor that was cleaned */
523 txq->last_desc_cleaned = desc_to_clean_to;
524 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + nb_tx_to_clean);
531 ixgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
534 struct igb_tx_queue *txq;
535 struct igb_tx_entry *sw_ring;
536 struct igb_tx_entry *txe, *txn;
537 volatile union ixgbe_adv_tx_desc *txr;
538 volatile union ixgbe_adv_tx_desc *txd;
539 struct rte_mbuf *tx_pkt;
540 struct rte_mbuf *m_seg;
541 union ixgbe_vlan_macip vlan_macip_lens;
542 uint64_t buf_dma_addr;
543 uint32_t olinfo_status;
544 uint32_t cmd_type_len;
557 sw_ring = txq->sw_ring;
559 tx_id = txq->tx_tail;
560 txe = &sw_ring[tx_id];
562 /* Determine if the descriptor ring needs to be cleaned. */
563 if ((txq->nb_tx_desc - txq->nb_tx_free) > txq->tx_free_thresh) {
564 ixgbe_xmit_cleanup(txq);
568 for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
571 pkt_len = tx_pkt->pkt_len;
573 RTE_MBUF_PREFETCH_TO_FREE(txe->mbuf);
576 * Determine how many (if any) context descriptors
577 * are needed for offload functionality.
579 ol_flags = tx_pkt->ol_flags;
580 vlan_macip_lens.f.vlan_tci = tx_pkt->vlan_tci;
581 vlan_macip_lens.f.l2_l3_len = tx_pkt->l2_l3_len;
583 /* If hardware offload required */
584 tx_ol_req = ol_flags & PKT_TX_OFFLOAD_MASK;
586 /* If new context need be built or reuse the exist ctx. */
587 ctx = what_advctx_update(txq, tx_ol_req,
588 vlan_macip_lens.data);
589 /* Only allocate context descriptor if required*/
590 new_ctx = (ctx == IXGBE_CTX_NUM);
595 * Keep track of how many descriptors are used this loop
596 * This will always be the number of segments + the number of
597 * Context descriptors required to transmit the packet
599 nb_used = (uint16_t)(tx_pkt->nb_segs + new_ctx);
602 * The number of descriptors that must be allocated for a
603 * packet is the number of segments of that packet, plus 1
604 * Context Descriptor for the hardware offload, if any.
605 * Determine the last TX descriptor to allocate in the TX ring
606 * for the packet, starting from the current position (tx_id)
609 tx_last = (uint16_t) (tx_id + nb_used - 1);
612 if (tx_last >= txq->nb_tx_desc)
613 tx_last = (uint16_t) (tx_last - txq->nb_tx_desc);
615 PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u pktlen=%u"
616 " tx_first=%u tx_last=%u\n",
617 (unsigned) txq->port_id,
618 (unsigned) txq->queue_id,
624 * Make sure there are enough TX descriptors available to
625 * transmit the entire packet.
626 * nb_used better be less than or equal to txq->tx_rs_thresh
628 if (nb_used > txq->nb_tx_free) {
629 PMD_TX_FREE_LOG(DEBUG,
630 "Not enough free TX descriptors "
631 "nb_used=%4u nb_free=%4u "
632 "(port=%d queue=%d)",
633 nb_used, txq->nb_tx_free,
634 txq->port_id, txq->queue_id);
636 if (ixgbe_xmit_cleanup(txq) != 0) {
637 /* Could not clean any descriptors */
643 /* nb_used better be <= txq->tx_rs_thresh */
644 if (unlikely(nb_used > txq->tx_rs_thresh)) {
645 PMD_TX_FREE_LOG(DEBUG,
646 "The number of descriptors needed to "
647 "transmit the packet exceeds the "
648 "RS bit threshold. This will impact "
650 "nb_used=%4u nb_free=%4u "
652 "(port=%d queue=%d)",
653 nb_used, txq->nb_tx_free,
655 txq->port_id, txq->queue_id);
657 * Loop here until there are enough TX
658 * descriptors or until the ring cannot be
661 while (nb_used > txq->nb_tx_free) {
662 if (ixgbe_xmit_cleanup(txq) != 0) {
664 * Could not clean any
676 * By now there are enough free TX descriptors to transmit
681 * Set common flags of all TX Data Descriptors.
683 * The following bits must be set in all Data Descriptors:
684 * - IXGBE_ADVTXD_DTYP_DATA
685 * - IXGBE_ADVTXD_DCMD_DEXT
687 * The following bits must be set in the first Data Descriptor
688 * and are ignored in the other ones:
689 * - IXGBE_ADVTXD_DCMD_IFCS
690 * - IXGBE_ADVTXD_MAC_1588
691 * - IXGBE_ADVTXD_DCMD_VLE
693 * The following bits must only be set in the last Data
695 * - IXGBE_TXD_CMD_EOP
697 * The following bits can be set in any Data Descriptor, but
698 * are only set in the last Data Descriptor:
701 cmd_type_len = IXGBE_ADVTXD_DTYP_DATA |
702 IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
703 olinfo_status = (pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
704 #ifdef RTE_LIBRTE_IEEE1588
705 if (ol_flags & PKT_TX_IEEE1588_TMST)
706 cmd_type_len |= IXGBE_ADVTXD_MAC_1588;
711 * Setup the TX Advanced Context Descriptor if required
714 volatile struct ixgbe_adv_tx_context_desc *
717 ctx_txd = (volatile struct
718 ixgbe_adv_tx_context_desc *)
721 txn = &sw_ring[txe->next_id];
722 RTE_MBUF_PREFETCH_TO_FREE(txn->mbuf);
724 if (txe->mbuf != NULL) {
725 rte_pktmbuf_free_seg(txe->mbuf);
729 ixgbe_set_xmit_ctx(txq, ctx_txd, tx_ol_req,
730 vlan_macip_lens.data);
732 txe->last_id = tx_last;
733 tx_id = txe->next_id;
738 * Setup the TX Advanced Data Descriptor,
739 * This path will go through
740 * whatever new/reuse the context descriptor
742 cmd_type_len |= tx_desc_vlan_flags_to_cmdtype(ol_flags);
743 olinfo_status |= tx_desc_cksum_flags_to_olinfo(ol_flags);
744 olinfo_status |= ctx << IXGBE_ADVTXD_IDX_SHIFT;
750 txn = &sw_ring[txe->next_id];
752 if (txe->mbuf != NULL)
753 rte_pktmbuf_free_seg(txe->mbuf);
757 * Set up Transmit Data Descriptor.
759 slen = m_seg->data_len;
760 buf_dma_addr = RTE_MBUF_DATA_DMA_ADDR(m_seg);
761 txd->read.buffer_addr =
762 rte_cpu_to_le_64(buf_dma_addr);
763 txd->read.cmd_type_len =
764 rte_cpu_to_le_32(cmd_type_len | slen);
765 txd->read.olinfo_status =
766 rte_cpu_to_le_32(olinfo_status);
767 txe->last_id = tx_last;
768 tx_id = txe->next_id;
771 } while (m_seg != NULL);
774 * The last packet data descriptor needs End Of Packet (EOP)
776 cmd_type_len |= IXGBE_TXD_CMD_EOP;
777 txq->nb_tx_used = (uint16_t)(txq->nb_tx_used + nb_used);
778 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_used);
780 /* Set RS bit only on threshold packets' last descriptor */
781 if (txq->nb_tx_used >= txq->tx_rs_thresh) {
782 PMD_TX_FREE_LOG(DEBUG,
783 "Setting RS bit on TXD id="
784 "%4u (port=%d queue=%d)",
785 tx_last, txq->port_id, txq->queue_id);
787 cmd_type_len |= IXGBE_TXD_CMD_RS;
789 /* Update txq RS bit counters */
792 txd->read.cmd_type_len |= rte_cpu_to_le_32(cmd_type_len);
798 * Set the Transmit Descriptor Tail (TDT)
800 PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_tx=%u",
801 (unsigned) txq->port_id, (unsigned) txq->queue_id,
802 (unsigned) tx_id, (unsigned) nb_tx);
803 IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, tx_id);
804 txq->tx_tail = tx_id;
809 /*********************************************************************
813 **********************************************************************/
814 static inline uint64_t
815 rx_desc_hlen_type_rss_to_pkt_flags(uint32_t hl_tp_rs)
819 static uint64_t ip_pkt_types_map[16] = {
820 0, PKT_RX_IPV4_HDR, PKT_RX_IPV4_HDR_EXT, PKT_RX_IPV4_HDR_EXT,
821 PKT_RX_IPV6_HDR, 0, 0, 0,
822 PKT_RX_IPV6_HDR_EXT, 0, 0, 0,
823 PKT_RX_IPV6_HDR_EXT, 0, 0, 0,
826 static uint64_t ip_rss_types_map[16] = {
827 0, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH,
828 0, PKT_RX_RSS_HASH, 0, PKT_RX_RSS_HASH,
829 PKT_RX_RSS_HASH, 0, 0, 0,
830 0, 0, 0, PKT_RX_FDIR,
833 #ifdef RTE_LIBRTE_IEEE1588
834 static uint32_t ip_pkt_etqf_map[8] = {
835 0, 0, 0, PKT_RX_IEEE1588_PTP,
839 pkt_flags = (hl_tp_rs & IXGBE_RXDADV_PKTTYPE_ETQF) ?
840 ip_pkt_etqf_map[(hl_tp_rs >> 4) & 0x07] :
841 ip_pkt_types_map[(hl_tp_rs >> 4) & 0x0F];
843 pkt_flags = (hl_tp_rs & IXGBE_RXDADV_PKTTYPE_ETQF) ? 0 :
844 ip_pkt_types_map[(hl_tp_rs >> 4) & 0x0F];
847 return pkt_flags | ip_rss_types_map[hl_tp_rs & 0xF];
850 static inline uint64_t
851 rx_desc_status_to_pkt_flags(uint32_t rx_status)
856 * Check if VLAN present only.
857 * Do not check whether L3/L4 rx checksum done by NIC or not,
858 * That can be found from rte_eth_rxmode.hw_ip_checksum flag
860 pkt_flags = (rx_status & IXGBE_RXD_STAT_VP) ? PKT_RX_VLAN_PKT : 0;
862 #ifdef RTE_LIBRTE_IEEE1588
863 if (rx_status & IXGBE_RXD_STAT_TMST)
864 pkt_flags = pkt_flags | PKT_RX_IEEE1588_TMST;
869 static inline uint64_t
870 rx_desc_error_to_pkt_flags(uint32_t rx_status)
873 * Bit 31: IPE, IPv4 checksum error
874 * Bit 30: L4I, L4I integrity error
876 static uint64_t error_to_pkt_flags_map[4] = {
877 0, PKT_RX_L4_CKSUM_BAD, PKT_RX_IP_CKSUM_BAD,
878 PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD
880 return error_to_pkt_flags_map[(rx_status >>
881 IXGBE_RXDADV_ERR_CKSUM_BIT) & IXGBE_RXDADV_ERR_CKSUM_MSK];
884 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
886 * LOOK_AHEAD defines how many desc statuses to check beyond the
887 * current descriptor.
888 * It must be a pound define for optimal performance.
889 * Do not change the value of LOOK_AHEAD, as the ixgbe_rx_scan_hw_ring
890 * function only works with LOOK_AHEAD=8.
893 #if (LOOK_AHEAD != 8)
894 #error "PMD IXGBE: LOOK_AHEAD must be 8\n"
897 ixgbe_rx_scan_hw_ring(struct igb_rx_queue *rxq)
899 volatile union ixgbe_adv_rx_desc *rxdp;
900 struct igb_rx_entry *rxep;
903 int s[LOOK_AHEAD], nb_dd;
907 /* get references to current descriptor and S/W ring entry */
908 rxdp = &rxq->rx_ring[rxq->rx_tail];
909 rxep = &rxq->sw_ring[rxq->rx_tail];
911 /* check to make sure there is at least 1 packet to receive */
912 if (! (rxdp->wb.upper.status_error & IXGBE_RXDADV_STAT_DD))
916 * Scan LOOK_AHEAD descriptors at a time to determine which descriptors
917 * reference packets that are ready to be received.
919 for (i = 0; i < RTE_PMD_IXGBE_RX_MAX_BURST;
920 i += LOOK_AHEAD, rxdp += LOOK_AHEAD, rxep += LOOK_AHEAD)
922 /* Read desc statuses backwards to avoid race condition */
923 for (j = LOOK_AHEAD-1; j >= 0; --j)
924 s[j] = rxdp[j].wb.upper.status_error;
926 /* Compute how many status bits were set */
928 for (j = 0; j < LOOK_AHEAD; ++j)
929 nb_dd += s[j] & IXGBE_RXDADV_STAT_DD;
933 /* Translate descriptor info to mbuf format */
934 for (j = 0; j < nb_dd; ++j) {
936 pkt_len = (uint16_t)(rxdp[j].wb.upper.length -
938 mb->data_len = pkt_len;
939 mb->pkt_len = pkt_len;
940 mb->vlan_tci = rxdp[j].wb.upper.vlan;
941 mb->hash.rss = rxdp[j].wb.lower.hi_dword.rss;
943 /* convert descriptor fields to rte mbuf flags */
944 mb->ol_flags = rx_desc_hlen_type_rss_to_pkt_flags(
945 rxdp[j].wb.lower.lo_dword.data);
946 /* reuse status field from scan list */
947 mb->ol_flags = mb->ol_flags |
948 rx_desc_status_to_pkt_flags(s[j]);
949 mb->ol_flags = mb->ol_flags |
950 rx_desc_error_to_pkt_flags(s[j]);
953 /* Move mbuf pointers from the S/W ring to the stage */
954 for (j = 0; j < LOOK_AHEAD; ++j) {
955 rxq->rx_stage[i + j] = rxep[j].mbuf;
958 /* stop if all requested packets could not be received */
959 if (nb_dd != LOOK_AHEAD)
963 /* clear software ring entries so we can cleanup correctly */
964 for (i = 0; i < nb_rx; ++i) {
965 rxq->sw_ring[rxq->rx_tail + i].mbuf = NULL;
973 ixgbe_rx_alloc_bufs(struct igb_rx_queue *rxq)
975 volatile union ixgbe_adv_rx_desc *rxdp;
976 struct igb_rx_entry *rxep;
982 /* allocate buffers in bulk directly into the S/W ring */
983 alloc_idx = (uint16_t)(rxq->rx_free_trigger -
984 (rxq->rx_free_thresh - 1));
985 rxep = &rxq->sw_ring[alloc_idx];
986 diag = rte_mempool_get_bulk(rxq->mb_pool, (void *)rxep,
987 rxq->rx_free_thresh);
988 if (unlikely(diag != 0))
991 rxdp = &rxq->rx_ring[alloc_idx];
992 for (i = 0; i < rxq->rx_free_thresh; ++i) {
993 /* populate the static rte mbuf fields */
995 rte_mbuf_refcnt_set(mb, 1);
997 mb->data_off = RTE_PKTMBUF_HEADROOM;
999 mb->port = rxq->port_id;
1001 /* populate the descriptors */
1002 dma_addr = (uint64_t)mb->buf_physaddr + RTE_PKTMBUF_HEADROOM;
1003 rxdp[i].read.hdr_addr = dma_addr;
1004 rxdp[i].read.pkt_addr = dma_addr;
1007 /* update tail pointer */
1009 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rxq->rx_free_trigger);
1011 /* update state of internal queue structure */
1012 rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_trigger +
1013 rxq->rx_free_thresh);
1014 if (rxq->rx_free_trigger >= rxq->nb_rx_desc)
1015 rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
1021 static inline uint16_t
1022 ixgbe_rx_fill_from_stage(struct igb_rx_queue *rxq, struct rte_mbuf **rx_pkts,
1025 struct rte_mbuf **stage = &rxq->rx_stage[rxq->rx_next_avail];
1028 /* how many packets are ready to return? */
1029 nb_pkts = (uint16_t)RTE_MIN(nb_pkts, rxq->rx_nb_avail);
1031 /* copy mbuf pointers to the application's packet list */
1032 for (i = 0; i < nb_pkts; ++i)
1033 rx_pkts[i] = stage[i];
1035 /* update internal queue state */
1036 rxq->rx_nb_avail = (uint16_t)(rxq->rx_nb_avail - nb_pkts);
1037 rxq->rx_next_avail = (uint16_t)(rxq->rx_next_avail + nb_pkts);
1042 static inline uint16_t
1043 rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1046 struct igb_rx_queue *rxq = (struct igb_rx_queue *)rx_queue;
1049 /* Any previously recv'd pkts will be returned from the Rx stage */
1050 if (rxq->rx_nb_avail)
1051 return ixgbe_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
1053 /* Scan the H/W ring for packets to receive */
1054 nb_rx = (uint16_t)ixgbe_rx_scan_hw_ring(rxq);
1056 /* update internal queue state */
1057 rxq->rx_next_avail = 0;
1058 rxq->rx_nb_avail = nb_rx;
1059 rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_rx);
1061 /* if required, allocate new buffers to replenish descriptors */
1062 if (rxq->rx_tail > rxq->rx_free_trigger) {
1063 if (ixgbe_rx_alloc_bufs(rxq) != 0) {
1065 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
1066 "queue_id=%u\n", (unsigned) rxq->port_id,
1067 (unsigned) rxq->queue_id);
1069 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
1070 rxq->rx_free_thresh;
1073 * Need to rewind any previous receives if we cannot
1074 * allocate new buffers to replenish the old ones.
1076 rxq->rx_nb_avail = 0;
1077 rxq->rx_tail = (uint16_t)(rxq->rx_tail - nb_rx);
1078 for (i = 0, j = rxq->rx_tail; i < nb_rx; ++i, ++j)
1079 rxq->sw_ring[j].mbuf = rxq->rx_stage[i];
1085 if (rxq->rx_tail >= rxq->nb_rx_desc)
1088 /* received any packets this loop? */
1089 if (rxq->rx_nb_avail)
1090 return ixgbe_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
1095 /* split requests into chunks of size RTE_PMD_IXGBE_RX_MAX_BURST */
1097 ixgbe_recv_pkts_bulk_alloc(void *rx_queue, struct rte_mbuf **rx_pkts,
1102 if (unlikely(nb_pkts == 0))
1105 if (likely(nb_pkts <= RTE_PMD_IXGBE_RX_MAX_BURST))
1106 return rx_recv_pkts(rx_queue, rx_pkts, nb_pkts);
1108 /* request is relatively large, chunk it up */
1112 n = (uint16_t)RTE_MIN(nb_pkts, RTE_PMD_IXGBE_RX_MAX_BURST);
1113 ret = rx_recv_pkts(rx_queue, &rx_pkts[nb_rx], n);
1114 nb_rx = (uint16_t)(nb_rx + ret);
1115 nb_pkts = (uint16_t)(nb_pkts - ret);
1122 #endif /* RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC */
1125 ixgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1128 struct igb_rx_queue *rxq;
1129 volatile union ixgbe_adv_rx_desc *rx_ring;
1130 volatile union ixgbe_adv_rx_desc *rxdp;
1131 struct igb_rx_entry *sw_ring;
1132 struct igb_rx_entry *rxe;
1133 struct rte_mbuf *rxm;
1134 struct rte_mbuf *nmb;
1135 union ixgbe_adv_rx_desc rxd;
1138 uint32_t hlen_type_rss;
1148 rx_id = rxq->rx_tail;
1149 rx_ring = rxq->rx_ring;
1150 sw_ring = rxq->sw_ring;
1151 while (nb_rx < nb_pkts) {
1153 * The order of operations here is important as the DD status
1154 * bit must not be read after any other descriptor fields.
1155 * rx_ring and rxdp are pointing to volatile data so the order
1156 * of accesses cannot be reordered by the compiler. If they were
1157 * not volatile, they could be reordered which could lead to
1158 * using invalid descriptor fields when read from rxd.
1160 rxdp = &rx_ring[rx_id];
1161 staterr = rxdp->wb.upper.status_error;
1162 if (! (staterr & rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD)))
1169 * If the IXGBE_RXDADV_STAT_EOP flag is not set, the RX packet
1170 * is likely to be invalid and to be dropped by the various
1171 * validation checks performed by the network stack.
1173 * Allocate a new mbuf to replenish the RX ring descriptor.
1174 * If the allocation fails:
1175 * - arrange for that RX descriptor to be the first one
1176 * being parsed the next time the receive function is
1177 * invoked [on the same queue].
1179 * - Stop parsing the RX ring and return immediately.
1181 * This policy do not drop the packet received in the RX
1182 * descriptor for which the allocation of a new mbuf failed.
1183 * Thus, it allows that packet to be later retrieved if
1184 * mbuf have been freed in the mean time.
1185 * As a side effect, holding RX descriptors instead of
1186 * systematically giving them back to the NIC may lead to
1187 * RX ring exhaustion situations.
1188 * However, the NIC can gracefully prevent such situations
1189 * to happen by sending specific "back-pressure" flow control
1190 * frames to its peer(s).
1192 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_id=%u "
1193 "ext_err_stat=0x%08x pkt_len=%u\n",
1194 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1195 (unsigned) rx_id, (unsigned) staterr,
1196 (unsigned) rte_le_to_cpu_16(rxd.wb.upper.length));
1198 nmb = rte_rxmbuf_alloc(rxq->mb_pool);
1200 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
1201 "queue_id=%u\n", (unsigned) rxq->port_id,
1202 (unsigned) rxq->queue_id);
1203 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed++;
1208 rxe = &sw_ring[rx_id];
1210 if (rx_id == rxq->nb_rx_desc)
1213 /* Prefetch next mbuf while processing current one. */
1214 rte_ixgbe_prefetch(sw_ring[rx_id].mbuf);
1217 * When next RX descriptor is on a cache-line boundary,
1218 * prefetch the next 4 RX descriptors and the next 8 pointers
1221 if ((rx_id & 0x3) == 0) {
1222 rte_ixgbe_prefetch(&rx_ring[rx_id]);
1223 rte_ixgbe_prefetch(&sw_ring[rx_id]);
1229 rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(nmb));
1230 rxdp->read.hdr_addr = dma_addr;
1231 rxdp->read.pkt_addr = dma_addr;
1234 * Initialize the returned mbuf.
1235 * 1) setup generic mbuf fields:
1236 * - number of segments,
1239 * - RX port identifier.
1240 * 2) integrate hardware offload data, if any:
1241 * - RSS flag & hash,
1242 * - IP checksum flag,
1243 * - VLAN TCI, if any,
1246 pkt_len = (uint16_t) (rte_le_to_cpu_16(rxd.wb.upper.length) -
1248 rxm->data_off = RTE_PKTMBUF_HEADROOM;
1249 rte_packet_prefetch((char *)rxm->buf_addr + rxm->data_off);
1252 rxm->pkt_len = pkt_len;
1253 rxm->data_len = pkt_len;
1254 rxm->port = rxq->port_id;
1256 hlen_type_rss = rte_le_to_cpu_32(rxd.wb.lower.lo_dword.data);
1257 /* Only valid if PKT_RX_VLAN_PKT set in pkt_flags */
1258 rxm->vlan_tci = rte_le_to_cpu_16(rxd.wb.upper.vlan);
1260 pkt_flags = rx_desc_hlen_type_rss_to_pkt_flags(hlen_type_rss);
1261 pkt_flags = pkt_flags | rx_desc_status_to_pkt_flags(staterr);
1262 pkt_flags = pkt_flags | rx_desc_error_to_pkt_flags(staterr);
1263 rxm->ol_flags = pkt_flags;
1265 if (likely(pkt_flags & PKT_RX_RSS_HASH))
1266 rxm->hash.rss = rxd.wb.lower.hi_dword.rss;
1267 else if (pkt_flags & PKT_RX_FDIR) {
1268 rxm->hash.fdir.hash =
1269 (uint16_t)((rxd.wb.lower.hi_dword.csum_ip.csum)
1270 & IXGBE_ATR_HASH_MASK);
1271 rxm->hash.fdir.id = rxd.wb.lower.hi_dword.csum_ip.ip_id;
1274 * Store the mbuf address into the next entry of the array
1275 * of returned packets.
1277 rx_pkts[nb_rx++] = rxm;
1279 rxq->rx_tail = rx_id;
1282 * If the number of free RX descriptors is greater than the RX free
1283 * threshold of the queue, advance the Receive Descriptor Tail (RDT)
1285 * Update the RDT with the value of the last processed RX descriptor
1286 * minus 1, to guarantee that the RDT register is never equal to the
1287 * RDH register, which creates a "full" ring situtation from the
1288 * hardware point of view...
1290 nb_hold = (uint16_t) (nb_hold + rxq->nb_rx_hold);
1291 if (nb_hold > rxq->rx_free_thresh) {
1292 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
1293 "nb_hold=%u nb_rx=%u\n",
1294 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1295 (unsigned) rx_id, (unsigned) nb_hold,
1297 rx_id = (uint16_t) ((rx_id == 0) ?
1298 (rxq->nb_rx_desc - 1) : (rx_id - 1));
1299 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rx_id);
1302 rxq->nb_rx_hold = nb_hold;
1307 ixgbe_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1310 struct igb_rx_queue *rxq;
1311 volatile union ixgbe_adv_rx_desc *rx_ring;
1312 volatile union ixgbe_adv_rx_desc *rxdp;
1313 struct igb_rx_entry *sw_ring;
1314 struct igb_rx_entry *rxe;
1315 struct rte_mbuf *first_seg;
1316 struct rte_mbuf *last_seg;
1317 struct rte_mbuf *rxm;
1318 struct rte_mbuf *nmb;
1319 union ixgbe_adv_rx_desc rxd;
1320 uint64_t dma; /* Physical address of mbuf data buffer */
1322 uint32_t hlen_type_rss;
1332 rx_id = rxq->rx_tail;
1333 rx_ring = rxq->rx_ring;
1334 sw_ring = rxq->sw_ring;
1337 * Retrieve RX context of current packet, if any.
1339 first_seg = rxq->pkt_first_seg;
1340 last_seg = rxq->pkt_last_seg;
1342 while (nb_rx < nb_pkts) {
1345 * The order of operations here is important as the DD status
1346 * bit must not be read after any other descriptor fields.
1347 * rx_ring and rxdp are pointing to volatile data so the order
1348 * of accesses cannot be reordered by the compiler. If they were
1349 * not volatile, they could be reordered which could lead to
1350 * using invalid descriptor fields when read from rxd.
1352 rxdp = &rx_ring[rx_id];
1353 staterr = rxdp->wb.upper.status_error;
1354 if (! (staterr & rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD)))
1361 * Allocate a new mbuf to replenish the RX ring descriptor.
1362 * If the allocation fails:
1363 * - arrange for that RX descriptor to be the first one
1364 * being parsed the next time the receive function is
1365 * invoked [on the same queue].
1367 * - Stop parsing the RX ring and return immediately.
1369 * This policy does not drop the packet received in the RX
1370 * descriptor for which the allocation of a new mbuf failed.
1371 * Thus, it allows that packet to be later retrieved if
1372 * mbuf have been freed in the mean time.
1373 * As a side effect, holding RX descriptors instead of
1374 * systematically giving them back to the NIC may lead to
1375 * RX ring exhaustion situations.
1376 * However, the NIC can gracefully prevent such situations
1377 * to happen by sending specific "back-pressure" flow control
1378 * frames to its peer(s).
1380 PMD_RX_LOG(DEBUG, "\nport_id=%u queue_id=%u rx_id=%u "
1381 "staterr=0x%x data_len=%u\n",
1382 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1383 (unsigned) rx_id, (unsigned) staterr,
1384 (unsigned) rte_le_to_cpu_16(rxd.wb.upper.length));
1386 nmb = rte_rxmbuf_alloc(rxq->mb_pool);
1388 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
1389 "queue_id=%u\n", (unsigned) rxq->port_id,
1390 (unsigned) rxq->queue_id);
1391 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed++;
1396 rxe = &sw_ring[rx_id];
1398 if (rx_id == rxq->nb_rx_desc)
1401 /* Prefetch next mbuf while processing current one. */
1402 rte_ixgbe_prefetch(sw_ring[rx_id].mbuf);
1405 * When next RX descriptor is on a cache-line boundary,
1406 * prefetch the next 4 RX descriptors and the next 8 pointers
1409 if ((rx_id & 0x3) == 0) {
1410 rte_ixgbe_prefetch(&rx_ring[rx_id]);
1411 rte_ixgbe_prefetch(&sw_ring[rx_id]);
1415 * Update RX descriptor with the physical address of the new
1416 * data buffer of the new allocated mbuf.
1420 dma = rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(nmb));
1421 rxdp->read.hdr_addr = dma;
1422 rxdp->read.pkt_addr = dma;
1425 * Set data length & data buffer address of mbuf.
1427 data_len = rte_le_to_cpu_16(rxd.wb.upper.length);
1428 rxm->data_len = data_len;
1429 rxm->data_off = RTE_PKTMBUF_HEADROOM;
1432 * If this is the first buffer of the received packet,
1433 * set the pointer to the first mbuf of the packet and
1434 * initialize its context.
1435 * Otherwise, update the total length and the number of segments
1436 * of the current scattered packet, and update the pointer to
1437 * the last mbuf of the current packet.
1439 if (first_seg == NULL) {
1441 first_seg->pkt_len = data_len;
1442 first_seg->nb_segs = 1;
1444 first_seg->pkt_len = (uint16_t)(first_seg->pkt_len
1446 first_seg->nb_segs++;
1447 last_seg->next = rxm;
1451 * If this is not the last buffer of the received packet,
1452 * update the pointer to the last mbuf of the current scattered
1453 * packet and continue to parse the RX ring.
1455 if (! (staterr & IXGBE_RXDADV_STAT_EOP)) {
1461 * This is the last buffer of the received packet.
1462 * If the CRC is not stripped by the hardware:
1463 * - Subtract the CRC length from the total packet length.
1464 * - If the last buffer only contains the whole CRC or a part
1465 * of it, free the mbuf associated to the last buffer.
1466 * If part of the CRC is also contained in the previous
1467 * mbuf, subtract the length of that CRC part from the
1468 * data length of the previous mbuf.
1471 if (unlikely(rxq->crc_len > 0)) {
1472 first_seg->pkt_len -= ETHER_CRC_LEN;
1473 if (data_len <= ETHER_CRC_LEN) {
1474 rte_pktmbuf_free_seg(rxm);
1475 first_seg->nb_segs--;
1476 last_seg->data_len = (uint16_t)
1477 (last_seg->data_len -
1478 (ETHER_CRC_LEN - data_len));
1479 last_seg->next = NULL;
1482 (uint16_t) (data_len - ETHER_CRC_LEN);
1486 * Initialize the first mbuf of the returned packet:
1487 * - RX port identifier,
1488 * - hardware offload data, if any:
1489 * - RSS flag & hash,
1490 * - IP checksum flag,
1491 * - VLAN TCI, if any,
1494 first_seg->port = rxq->port_id;
1497 * The vlan_tci field is only valid when PKT_RX_VLAN_PKT is
1498 * set in the pkt_flags field.
1500 first_seg->vlan_tci = rte_le_to_cpu_16(rxd.wb.upper.vlan);
1501 hlen_type_rss = rte_le_to_cpu_32(rxd.wb.lower.lo_dword.data);
1502 pkt_flags = rx_desc_hlen_type_rss_to_pkt_flags(hlen_type_rss);
1503 pkt_flags = (uint16_t)(pkt_flags |
1504 rx_desc_status_to_pkt_flags(staterr));
1505 pkt_flags = (uint16_t)(pkt_flags |
1506 rx_desc_error_to_pkt_flags(staterr));
1507 first_seg->ol_flags = pkt_flags;
1509 if (likely(pkt_flags & PKT_RX_RSS_HASH))
1510 first_seg->hash.rss = rxd.wb.lower.hi_dword.rss;
1511 else if (pkt_flags & PKT_RX_FDIR) {
1512 first_seg->hash.fdir.hash =
1513 (uint16_t)((rxd.wb.lower.hi_dword.csum_ip.csum)
1514 & IXGBE_ATR_HASH_MASK);
1515 first_seg->hash.fdir.id =
1516 rxd.wb.lower.hi_dword.csum_ip.ip_id;
1519 /* Prefetch data of first segment, if configured to do so. */
1520 rte_packet_prefetch((char *)first_seg->buf_addr +
1521 first_seg->data_off);
1524 * Store the mbuf address into the next entry of the array
1525 * of returned packets.
1527 rx_pkts[nb_rx++] = first_seg;
1530 * Setup receipt context for a new packet.
1536 * Record index of the next RX descriptor to probe.
1538 rxq->rx_tail = rx_id;
1541 * Save receive context.
1543 rxq->pkt_first_seg = first_seg;
1544 rxq->pkt_last_seg = last_seg;
1547 * If the number of free RX descriptors is greater than the RX free
1548 * threshold of the queue, advance the Receive Descriptor Tail (RDT)
1550 * Update the RDT with the value of the last processed RX descriptor
1551 * minus 1, to guarantee that the RDT register is never equal to the
1552 * RDH register, which creates a "full" ring situtation from the
1553 * hardware point of view...
1555 nb_hold = (uint16_t) (nb_hold + rxq->nb_rx_hold);
1556 if (nb_hold > rxq->rx_free_thresh) {
1557 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
1558 "nb_hold=%u nb_rx=%u\n",
1559 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1560 (unsigned) rx_id, (unsigned) nb_hold,
1562 rx_id = (uint16_t) ((rx_id == 0) ?
1563 (rxq->nb_rx_desc - 1) : (rx_id - 1));
1564 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rx_id);
1567 rxq->nb_rx_hold = nb_hold;
1571 /*********************************************************************
1573 * Queue management functions
1575 **********************************************************************/
1578 * Rings setup and release.
1580 * TDBA/RDBA should be aligned on 16 byte boundary. But TDLEN/RDLEN should be
1581 * multiple of 128 bytes. So we align TDBA/RDBA on 128 byte boundary. This will
1582 * also optimize cache line size effect. H/W supports up to cache line size 128.
1584 #define IXGBE_ALIGN 128
1587 * Maximum number of Ring Descriptors.
1589 * Since RDLEN/TDLEN should be multiple of 128 bytes, the number of ring
1590 * descriptors should meet the following condition:
1591 * (num_ring_desc * sizeof(rx/tx descriptor)) % 128 == 0
1593 #define IXGBE_MIN_RING_DESC 32
1594 #define IXGBE_MAX_RING_DESC 4096
1597 * Create memzone for HW rings. malloc can't be used as the physical address is
1598 * needed. If the memzone is already created, then this function returns a ptr
1601 static const struct rte_memzone *
1602 ring_dma_zone_reserve(struct rte_eth_dev *dev, const char *ring_name,
1603 uint16_t queue_id, uint32_t ring_size, int socket_id)
1605 char z_name[RTE_MEMZONE_NAMESIZE];
1606 const struct rte_memzone *mz;
1608 snprintf(z_name, sizeof(z_name), "%s_%s_%d_%d",
1609 dev->driver->pci_drv.name, ring_name,
1610 dev->data->port_id, queue_id);
1612 mz = rte_memzone_lookup(z_name);
1616 #ifdef RTE_LIBRTE_XEN_DOM0
1617 return rte_memzone_reserve_bounded(z_name, ring_size,
1618 socket_id, 0, IXGBE_ALIGN, RTE_PGSIZE_2M);
1620 return rte_memzone_reserve_aligned(z_name, ring_size,
1621 socket_id, 0, IXGBE_ALIGN);
1626 ixgbe_tx_queue_release_mbufs(struct igb_tx_queue *txq)
1630 if (txq->sw_ring != NULL) {
1631 for (i = 0; i < txq->nb_tx_desc; i++) {
1632 if (txq->sw_ring[i].mbuf != NULL) {
1633 rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf);
1634 txq->sw_ring[i].mbuf = NULL;
1641 ixgbe_tx_free_swring(struct igb_tx_queue *txq)
1644 txq->sw_ring != NULL)
1645 rte_free(txq->sw_ring);
1649 ixgbe_tx_queue_release(struct igb_tx_queue *txq)
1651 if (txq != NULL && txq->ops != NULL) {
1652 txq->ops->release_mbufs(txq);
1653 txq->ops->free_swring(txq);
1659 ixgbe_dev_tx_queue_release(void *txq)
1661 ixgbe_tx_queue_release(txq);
1664 /* (Re)set dynamic igb_tx_queue fields to defaults */
1666 ixgbe_reset_tx_queue(struct igb_tx_queue *txq)
1668 static const union ixgbe_adv_tx_desc zeroed_desc = { .read = {
1670 struct igb_tx_entry *txe = txq->sw_ring;
1673 /* Zero out HW ring memory */
1674 for (i = 0; i < txq->nb_tx_desc; i++) {
1675 txq->tx_ring[i] = zeroed_desc;
1678 /* Initialize SW ring entries */
1679 prev = (uint16_t) (txq->nb_tx_desc - 1);
1680 for (i = 0; i < txq->nb_tx_desc; i++) {
1681 volatile union ixgbe_adv_tx_desc *txd = &txq->tx_ring[i];
1682 txd->wb.status = IXGBE_TXD_STAT_DD;
1685 txe[prev].next_id = i;
1689 txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
1690 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
1693 txq->nb_tx_used = 0;
1695 * Always allow 1 descriptor to be un-allocated to avoid
1696 * a H/W race condition
1698 txq->last_desc_cleaned = (uint16_t)(txq->nb_tx_desc - 1);
1699 txq->nb_tx_free = (uint16_t)(txq->nb_tx_desc - 1);
1701 memset((void*)&txq->ctx_cache, 0,
1702 IXGBE_CTX_NUM * sizeof(struct ixgbe_advctx_info));
1705 static struct ixgbe_txq_ops def_txq_ops = {
1706 .release_mbufs = ixgbe_tx_queue_release_mbufs,
1707 .free_swring = ixgbe_tx_free_swring,
1708 .reset = ixgbe_reset_tx_queue,
1712 ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev,
1715 unsigned int socket_id,
1716 const struct rte_eth_txconf *tx_conf)
1718 const struct rte_memzone *tz;
1719 struct igb_tx_queue *txq;
1720 struct ixgbe_hw *hw;
1721 uint16_t tx_rs_thresh, tx_free_thresh;
1723 PMD_INIT_FUNC_TRACE();
1724 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1727 * Validate number of transmit descriptors.
1728 * It must not exceed hardware maximum, and must be multiple
1731 if (((nb_desc * sizeof(union ixgbe_adv_tx_desc)) % IXGBE_ALIGN) != 0 ||
1732 (nb_desc > IXGBE_MAX_RING_DESC) ||
1733 (nb_desc < IXGBE_MIN_RING_DESC)) {
1738 * The following two parameters control the setting of the RS bit on
1739 * transmit descriptors.
1740 * TX descriptors will have their RS bit set after txq->tx_rs_thresh
1741 * descriptors have been used.
1742 * The TX descriptor ring will be cleaned after txq->tx_free_thresh
1743 * descriptors are used or if the number of descriptors required
1744 * to transmit a packet is greater than the number of free TX
1746 * The following constraints must be satisfied:
1747 * tx_rs_thresh must be greater than 0.
1748 * tx_rs_thresh must be less than the size of the ring minus 2.
1749 * tx_rs_thresh must be less than or equal to tx_free_thresh.
1750 * tx_rs_thresh must be a divisor of the ring size.
1751 * tx_free_thresh must be greater than 0.
1752 * tx_free_thresh must be less than the size of the ring minus 3.
1753 * One descriptor in the TX ring is used as a sentinel to avoid a
1754 * H/W race condition, hence the maximum threshold constraints.
1755 * When set to zero use default values.
1757 tx_rs_thresh = (uint16_t)((tx_conf->tx_rs_thresh) ?
1758 tx_conf->tx_rs_thresh : DEFAULT_TX_RS_THRESH);
1759 tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ?
1760 tx_conf->tx_free_thresh : DEFAULT_TX_FREE_THRESH);
1761 if (tx_rs_thresh >= (nb_desc - 2)) {
1762 PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than the number "
1763 "of TX descriptors minus 2. (tx_rs_thresh=%u "
1764 "port=%d queue=%d)", (unsigned int)tx_rs_thresh,
1765 (int)dev->data->port_id, (int)queue_idx);
1768 if (tx_free_thresh >= (nb_desc - 3)) {
1769 PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than the "
1770 "tx_free_thresh must be less than the number of "
1771 "TX descriptors minus 3. (tx_free_thresh=%u "
1772 "port=%d queue=%d)",
1773 (unsigned int)tx_free_thresh,
1774 (int)dev->data->port_id, (int)queue_idx);
1777 if (tx_rs_thresh > tx_free_thresh) {
1778 PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than or equal to "
1779 "tx_free_thresh. (tx_free_thresh=%u "
1780 "tx_rs_thresh=%u port=%d queue=%d)",
1781 (unsigned int)tx_free_thresh,
1782 (unsigned int)tx_rs_thresh,
1783 (int)dev->data->port_id,
1787 if ((nb_desc % tx_rs_thresh) != 0) {
1788 PMD_INIT_LOG(ERR, "tx_rs_thresh must be a divisor of the "
1789 "number of TX descriptors. (tx_rs_thresh=%u "
1790 "port=%d queue=%d)", (unsigned int)tx_rs_thresh,
1791 (int)dev->data->port_id, (int)queue_idx);
1796 * If rs_bit_thresh is greater than 1, then TX WTHRESH should be
1797 * set to 0. If WTHRESH is greater than zero, the RS bit is ignored
1798 * by the NIC and all descriptors are written back after the NIC
1799 * accumulates WTHRESH descriptors.
1801 if ((tx_rs_thresh > 1) && (tx_conf->tx_thresh.wthresh != 0)) {
1802 PMD_INIT_LOG(ERR, "TX WTHRESH must be set to 0 if "
1803 "tx_rs_thresh is greater than 1. (tx_rs_thresh=%u "
1804 "port=%d queue=%d)", (unsigned int)tx_rs_thresh,
1805 (int)dev->data->port_id, (int)queue_idx);
1809 /* Free memory prior to re-allocation if needed... */
1810 if (dev->data->tx_queues[queue_idx] != NULL) {
1811 ixgbe_tx_queue_release(dev->data->tx_queues[queue_idx]);
1812 dev->data->tx_queues[queue_idx] = NULL;
1815 /* First allocate the tx queue data structure */
1816 txq = rte_zmalloc_socket("ethdev TX queue", sizeof(struct igb_tx_queue),
1817 CACHE_LINE_SIZE, socket_id);
1822 * Allocate TX ring hardware descriptors. A memzone large enough to
1823 * handle the maximum ring size is allocated in order to allow for
1824 * resizing in later calls to the queue setup function.
1826 tz = ring_dma_zone_reserve(dev, "tx_ring", queue_idx,
1827 sizeof(union ixgbe_adv_tx_desc) * IXGBE_MAX_RING_DESC,
1830 ixgbe_tx_queue_release(txq);
1834 txq->nb_tx_desc = nb_desc;
1835 txq->tx_rs_thresh = tx_rs_thresh;
1836 txq->tx_free_thresh = tx_free_thresh;
1837 txq->pthresh = tx_conf->tx_thresh.pthresh;
1838 txq->hthresh = tx_conf->tx_thresh.hthresh;
1839 txq->wthresh = tx_conf->tx_thresh.wthresh;
1840 txq->queue_id = queue_idx;
1841 txq->reg_idx = (uint16_t)((RTE_ETH_DEV_SRIOV(dev).active == 0) ?
1842 queue_idx : RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx + queue_idx);
1843 txq->port_id = dev->data->port_id;
1844 txq->txq_flags = tx_conf->txq_flags;
1845 txq->ops = &def_txq_ops;
1846 txq->start_tx_per_q = tx_conf->start_tx_per_q;
1849 * Modification to set VFTDT for virtual function if vf is detected
1851 if (hw->mac.type == ixgbe_mac_82599_vf)
1852 txq->tdt_reg_addr = IXGBE_PCI_REG_ADDR(hw, IXGBE_VFTDT(queue_idx));
1854 txq->tdt_reg_addr = IXGBE_PCI_REG_ADDR(hw, IXGBE_TDT(txq->reg_idx));
1855 #ifndef RTE_LIBRTE_XEN_DOM0
1856 txq->tx_ring_phys_addr = (uint64_t) tz->phys_addr;
1858 txq->tx_ring_phys_addr = rte_mem_phy2mch(tz->memseg_id, tz->phys_addr);
1860 txq->tx_ring = (union ixgbe_adv_tx_desc *) tz->addr;
1862 /* Allocate software ring */
1863 txq->sw_ring = rte_zmalloc_socket("txq->sw_ring",
1864 sizeof(struct igb_tx_entry) * nb_desc,
1865 CACHE_LINE_SIZE, socket_id);
1866 if (txq->sw_ring == NULL) {
1867 ixgbe_tx_queue_release(txq);
1870 PMD_INIT_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64"\n",
1871 txq->sw_ring, txq->tx_ring, txq->tx_ring_phys_addr);
1873 /* Use a simple Tx queue (no offloads, no multi segs) if possible */
1874 if (((txq->txq_flags & IXGBE_SIMPLE_FLAGS) == IXGBE_SIMPLE_FLAGS) &&
1875 (txq->tx_rs_thresh >= RTE_PMD_IXGBE_TX_MAX_BURST)) {
1876 PMD_INIT_LOG(INFO, "Using simple tx code path\n");
1877 #ifdef RTE_IXGBE_INC_VECTOR
1878 if (txq->tx_rs_thresh <= RTE_IXGBE_TX_MAX_FREE_BUF_SZ &&
1879 ixgbe_txq_vec_setup(txq) == 0) {
1880 PMD_INIT_LOG(INFO, "Vector tx enabled.\n");
1881 dev->tx_pkt_burst = ixgbe_xmit_pkts_vec;
1885 dev->tx_pkt_burst = ixgbe_xmit_pkts_simple;
1887 PMD_INIT_LOG(INFO, "Using full-featured tx code path\n");
1888 PMD_INIT_LOG(INFO, " - txq_flags = %lx [IXGBE_SIMPLE_FLAGS=%lx]\n", (long unsigned)txq->txq_flags, (long unsigned)IXGBE_SIMPLE_FLAGS);
1889 PMD_INIT_LOG(INFO, " - tx_rs_thresh = %lu [RTE_PMD_IXGBE_TX_MAX_BURST=%lu]\n", (long unsigned)txq->tx_rs_thresh, (long unsigned)RTE_PMD_IXGBE_TX_MAX_BURST);
1890 dev->tx_pkt_burst = ixgbe_xmit_pkts;
1893 txq->ops->reset(txq);
1895 dev->data->tx_queues[queue_idx] = txq;
1902 ixgbe_rx_queue_release_mbufs(struct igb_rx_queue *rxq)
1906 if (rxq->sw_ring != NULL) {
1907 for (i = 0; i < rxq->nb_rx_desc; i++) {
1908 if (rxq->sw_ring[i].mbuf != NULL) {
1909 rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
1910 rxq->sw_ring[i].mbuf = NULL;
1913 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
1914 if (rxq->rx_nb_avail) {
1915 for (i = 0; i < rxq->rx_nb_avail; ++i) {
1916 struct rte_mbuf *mb;
1917 mb = rxq->rx_stage[rxq->rx_next_avail + i];
1918 rte_pktmbuf_free_seg(mb);
1920 rxq->rx_nb_avail = 0;
1927 ixgbe_rx_queue_release(struct igb_rx_queue *rxq)
1930 ixgbe_rx_queue_release_mbufs(rxq);
1931 rte_free(rxq->sw_ring);
1937 ixgbe_dev_rx_queue_release(void *rxq)
1939 ixgbe_rx_queue_release(rxq);
1943 * Check if Rx Burst Bulk Alloc function can be used.
1945 * 0: the preconditions are satisfied and the bulk allocation function
1947 * -EINVAL: the preconditions are NOT satisfied and the default Rx burst
1948 * function must be used.
1951 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
1952 check_rx_burst_bulk_alloc_preconditions(struct igb_rx_queue *rxq)
1954 check_rx_burst_bulk_alloc_preconditions(__rte_unused struct igb_rx_queue *rxq)
1960 * Make sure the following pre-conditions are satisfied:
1961 * rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST
1962 * rxq->rx_free_thresh < rxq->nb_rx_desc
1963 * (rxq->nb_rx_desc % rxq->rx_free_thresh) == 0
1964 * rxq->nb_rx_desc<(IXGBE_MAX_RING_DESC-RTE_PMD_IXGBE_RX_MAX_BURST)
1965 * Scattered packets are not supported. This should be checked
1966 * outside of this function.
1968 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
1969 if (! (rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST))
1971 else if (! (rxq->rx_free_thresh < rxq->nb_rx_desc))
1973 else if (! ((rxq->nb_rx_desc % rxq->rx_free_thresh) == 0))
1975 else if (! (rxq->nb_rx_desc <
1976 (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST)))
1985 /* Reset dynamic igb_rx_queue fields back to defaults */
1987 ixgbe_reset_rx_queue(struct igb_rx_queue *rxq)
1989 static const union ixgbe_adv_rx_desc zeroed_desc = { .read = {
1995 * By default, the Rx queue setup function allocates enough memory for
1996 * IXGBE_MAX_RING_DESC. The Rx Burst bulk allocation function requires
1997 * extra memory at the end of the descriptor ring to be zero'd out. A
1998 * pre-condition for using the Rx burst bulk alloc function is that the
1999 * number of descriptors is less than or equal to
2000 * (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST). Check all the
2001 * constraints here to see if we need to zero out memory after the end
2002 * of the H/W descriptor ring.
2004 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2005 if (check_rx_burst_bulk_alloc_preconditions(rxq) == 0)
2006 /* zero out extra memory */
2007 len = (uint16_t)(rxq->nb_rx_desc + RTE_PMD_IXGBE_RX_MAX_BURST);
2010 /* do not zero out extra memory */
2011 len = rxq->nb_rx_desc;
2014 * Zero out HW ring memory. Zero out extra memory at the end of
2015 * the H/W ring so look-ahead logic in Rx Burst bulk alloc function
2016 * reads extra memory as zeros.
2018 for (i = 0; i < len; i++) {
2019 rxq->rx_ring[i] = zeroed_desc;
2022 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2024 * initialize extra software ring entries. Space for these extra
2025 * entries is always allocated
2027 memset(&rxq->fake_mbuf, 0x0, sizeof(rxq->fake_mbuf));
2028 for (i = 0; i < RTE_PMD_IXGBE_RX_MAX_BURST; ++i) {
2029 rxq->sw_ring[rxq->nb_rx_desc + i].mbuf = &rxq->fake_mbuf;
2032 rxq->rx_nb_avail = 0;
2033 rxq->rx_next_avail = 0;
2034 rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
2035 #endif /* RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC */
2037 rxq->nb_rx_hold = 0;
2038 rxq->pkt_first_seg = NULL;
2039 rxq->pkt_last_seg = NULL;
2043 ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
2046 unsigned int socket_id,
2047 const struct rte_eth_rxconf *rx_conf,
2048 struct rte_mempool *mp)
2050 const struct rte_memzone *rz;
2051 struct igb_rx_queue *rxq;
2052 struct ixgbe_hw *hw;
2053 int use_def_burst_func = 1;
2056 PMD_INIT_FUNC_TRACE();
2057 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2060 * Validate number of receive descriptors.
2061 * It must not exceed hardware maximum, and must be multiple
2064 if (((nb_desc * sizeof(union ixgbe_adv_rx_desc)) % IXGBE_ALIGN) != 0 ||
2065 (nb_desc > IXGBE_MAX_RING_DESC) ||
2066 (nb_desc < IXGBE_MIN_RING_DESC)) {
2070 /* Free memory prior to re-allocation if needed... */
2071 if (dev->data->rx_queues[queue_idx] != NULL) {
2072 ixgbe_rx_queue_release(dev->data->rx_queues[queue_idx]);
2073 dev->data->rx_queues[queue_idx] = NULL;
2076 /* First allocate the rx queue data structure */
2077 rxq = rte_zmalloc_socket("ethdev RX queue", sizeof(struct igb_rx_queue),
2078 CACHE_LINE_SIZE, socket_id);
2082 rxq->nb_rx_desc = nb_desc;
2083 rxq->rx_free_thresh = rx_conf->rx_free_thresh;
2084 rxq->queue_id = queue_idx;
2085 rxq->reg_idx = (uint16_t)((RTE_ETH_DEV_SRIOV(dev).active == 0) ?
2086 queue_idx : RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx + queue_idx);
2087 rxq->port_id = dev->data->port_id;
2088 rxq->crc_len = (uint8_t) ((dev->data->dev_conf.rxmode.hw_strip_crc) ?
2090 rxq->drop_en = rx_conf->rx_drop_en;
2091 rxq->start_rx_per_q = rx_conf->start_rx_per_q;
2094 * Allocate RX ring hardware descriptors. A memzone large enough to
2095 * handle the maximum ring size is allocated in order to allow for
2096 * resizing in later calls to the queue setup function.
2098 rz = ring_dma_zone_reserve(dev, "rx_ring", queue_idx,
2099 RX_RING_SZ, socket_id);
2101 ixgbe_rx_queue_release(rxq);
2106 * Zero init all the descriptors in the ring.
2108 memset (rz->addr, 0, RX_RING_SZ);
2111 * Modified to setup VFRDT for Virtual Function
2113 if (hw->mac.type == ixgbe_mac_82599_vf) {
2115 IXGBE_PCI_REG_ADDR(hw, IXGBE_VFRDT(queue_idx));
2117 IXGBE_PCI_REG_ADDR(hw, IXGBE_VFRDH(queue_idx));
2121 IXGBE_PCI_REG_ADDR(hw, IXGBE_RDT(rxq->reg_idx));
2123 IXGBE_PCI_REG_ADDR(hw, IXGBE_RDH(rxq->reg_idx));
2125 #ifndef RTE_LIBRTE_XEN_DOM0
2126 rxq->rx_ring_phys_addr = (uint64_t) rz->phys_addr;
2128 rxq->rx_ring_phys_addr = rte_mem_phy2mch(rz->memseg_id, rz->phys_addr);
2130 rxq->rx_ring = (union ixgbe_adv_rx_desc *) rz->addr;
2133 * Allocate software ring. Allow for space at the end of the
2134 * S/W ring to make sure look-ahead logic in bulk alloc Rx burst
2135 * function does not access an invalid memory region.
2137 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2138 len = (uint16_t)(nb_desc + RTE_PMD_IXGBE_RX_MAX_BURST);
2142 rxq->sw_ring = rte_zmalloc_socket("rxq->sw_ring",
2143 sizeof(struct igb_rx_entry) * len,
2144 CACHE_LINE_SIZE, socket_id);
2145 if (rxq->sw_ring == NULL) {
2146 ixgbe_rx_queue_release(rxq);
2149 PMD_INIT_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64"\n",
2150 rxq->sw_ring, rxq->rx_ring, rxq->rx_ring_phys_addr);
2153 * Certain constraints must be met in order to use the bulk buffer
2154 * allocation Rx burst function.
2156 use_def_burst_func = check_rx_burst_bulk_alloc_preconditions(rxq);
2158 /* Check if pre-conditions are satisfied, and no Scattered Rx */
2159 if (!use_def_burst_func && !dev->data->scattered_rx) {
2160 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2161 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
2162 "satisfied. Rx Burst Bulk Alloc function will be "
2163 "used on port=%d, queue=%d.\n",
2164 rxq->port_id, rxq->queue_id);
2165 dev->rx_pkt_burst = ixgbe_recv_pkts_bulk_alloc;
2166 #ifdef RTE_IXGBE_INC_VECTOR
2167 if (!ixgbe_rx_vec_condition_check(dev)) {
2168 PMD_INIT_LOG(INFO, "Vector rx enabled, please make "
2169 "sure RX burst size no less than 32.\n");
2170 ixgbe_rxq_vec_setup(rxq);
2171 dev->rx_pkt_burst = ixgbe_recv_pkts_vec;
2176 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions "
2177 "are not satisfied, Scattered Rx is requested, "
2178 "or RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC is not "
2179 "enabled (port=%d, queue=%d).\n",
2180 rxq->port_id, rxq->queue_id);
2182 dev->data->rx_queues[queue_idx] = rxq;
2184 ixgbe_reset_rx_queue(rxq);
2190 ixgbe_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
2192 #define IXGBE_RXQ_SCAN_INTERVAL 4
2193 volatile union ixgbe_adv_rx_desc *rxdp;
2194 struct igb_rx_queue *rxq;
2197 if (rx_queue_id >= dev->data->nb_rx_queues) {
2198 PMD_RX_LOG(ERR, "Invalid RX queue id=%d\n", rx_queue_id);
2202 rxq = dev->data->rx_queues[rx_queue_id];
2203 rxdp = &(rxq->rx_ring[rxq->rx_tail]);
2205 while ((desc < rxq->nb_rx_desc) &&
2206 (rxdp->wb.upper.status_error & IXGBE_RXDADV_STAT_DD)) {
2207 desc += IXGBE_RXQ_SCAN_INTERVAL;
2208 rxdp += IXGBE_RXQ_SCAN_INTERVAL;
2209 if (rxq->rx_tail + desc >= rxq->nb_rx_desc)
2210 rxdp = &(rxq->rx_ring[rxq->rx_tail +
2211 desc - rxq->nb_rx_desc]);
2218 ixgbe_dev_rx_descriptor_done(void *rx_queue, uint16_t offset)
2220 volatile union ixgbe_adv_rx_desc *rxdp;
2221 struct igb_rx_queue *rxq = rx_queue;
2224 if (unlikely(offset >= rxq->nb_rx_desc))
2226 desc = rxq->rx_tail + offset;
2227 if (desc >= rxq->nb_rx_desc)
2228 desc -= rxq->nb_rx_desc;
2230 rxdp = &rxq->rx_ring[desc];
2231 return !!(rxdp->wb.upper.status_error & IXGBE_RXDADV_STAT_DD);
2235 ixgbe_dev_clear_queues(struct rte_eth_dev *dev)
2239 PMD_INIT_FUNC_TRACE();
2241 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2242 struct igb_tx_queue *txq = dev->data->tx_queues[i];
2244 txq->ops->release_mbufs(txq);
2245 txq->ops->reset(txq);
2249 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2250 struct igb_rx_queue *rxq = dev->data->rx_queues[i];
2252 ixgbe_rx_queue_release_mbufs(rxq);
2253 ixgbe_reset_rx_queue(rxq);
2258 /*********************************************************************
2260 * Device RX/TX init functions
2262 **********************************************************************/
2265 * Receive Side Scaling (RSS)
2266 * See section 7.1.2.8 in the following document:
2267 * "Intel 82599 10 GbE Controller Datasheet" - Revision 2.1 October 2009
2270 * The source and destination IP addresses of the IP header and the source
2271 * and destination ports of TCP/UDP headers, if any, of received packets are
2272 * hashed against a configurable random key to compute a 32-bit RSS hash result.
2273 * The seven (7) LSBs of the 32-bit hash result are used as an index into a
2274 * 128-entry redirection table (RETA). Each entry of the RETA provides a 3-bit
2275 * RSS output index which is used as the RX queue index where to store the
2277 * The following output is supplied in the RX write-back descriptor:
2278 * - 32-bit result of the Microsoft RSS hash function,
2279 * - 4-bit RSS type field.
2283 * RSS random key supplied in section 7.1.2.8.3 of the Intel 82599 datasheet.
2284 * Used as the default key.
2286 static uint8_t rss_intel_key[40] = {
2287 0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2,
2288 0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0,
2289 0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4,
2290 0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C,
2291 0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA,
2295 ixgbe_rss_disable(struct rte_eth_dev *dev)
2297 struct ixgbe_hw *hw;
2300 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2301 mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC);
2302 mrqc &= ~IXGBE_MRQC_RSSEN;
2303 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2307 ixgbe_hw_rss_hash_set(struct ixgbe_hw *hw, struct rte_eth_rss_conf *rss_conf)
2315 hash_key = rss_conf->rss_key;
2316 if (hash_key != NULL) {
2317 /* Fill in RSS hash key */
2318 for (i = 0; i < 10; i++) {
2319 rss_key = hash_key[(i * 4)];
2320 rss_key |= hash_key[(i * 4) + 1] << 8;
2321 rss_key |= hash_key[(i * 4) + 2] << 16;
2322 rss_key |= hash_key[(i * 4) + 3] << 24;
2323 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RSSRK(0), i, rss_key);
2327 /* Set configured hashing protocols in MRQC register */
2328 rss_hf = rss_conf->rss_hf;
2329 mrqc = IXGBE_MRQC_RSSEN; /* Enable RSS */
2330 if (rss_hf & ETH_RSS_IPV4)
2331 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4;
2332 if (rss_hf & ETH_RSS_IPV4_TCP)
2333 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_TCP;
2334 if (rss_hf & ETH_RSS_IPV6)
2335 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6;
2336 if (rss_hf & ETH_RSS_IPV6_EX)
2337 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX;
2338 if (rss_hf & ETH_RSS_IPV6_TCP)
2339 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
2340 if (rss_hf & ETH_RSS_IPV6_TCP_EX)
2341 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP;
2342 if (rss_hf & ETH_RSS_IPV4_UDP)
2343 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP;
2344 if (rss_hf & ETH_RSS_IPV6_UDP)
2345 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
2346 if (rss_hf & ETH_RSS_IPV6_UDP_EX)
2347 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP;
2348 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2352 ixgbe_dev_rss_hash_update(struct rte_eth_dev *dev,
2353 struct rte_eth_rss_conf *rss_conf)
2355 struct ixgbe_hw *hw;
2359 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2362 * Excerpt from section 7.1.2.8 Receive-Side Scaling (RSS):
2363 * "RSS enabling cannot be done dynamically while it must be
2364 * preceded by a software reset"
2365 * Before changing anything, first check that the update RSS operation
2366 * does not attempt to disable RSS, if RSS was enabled at
2367 * initialization time, or does not attempt to enable RSS, if RSS was
2368 * disabled at initialization time.
2370 rss_hf = rss_conf->rss_hf & IXGBE_RSS_OFFLOAD_ALL;
2371 mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC);
2372 if (!(mrqc & IXGBE_MRQC_RSSEN)) { /* RSS disabled */
2373 if (rss_hf != 0) /* Enable RSS */
2375 return 0; /* Nothing to do */
2378 if (rss_hf == 0) /* Disable RSS */
2380 ixgbe_hw_rss_hash_set(hw, rss_conf);
2385 ixgbe_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
2386 struct rte_eth_rss_conf *rss_conf)
2388 struct ixgbe_hw *hw;
2395 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2396 hash_key = rss_conf->rss_key;
2397 if (hash_key != NULL) {
2398 /* Return RSS hash key */
2399 for (i = 0; i < 10; i++) {
2400 rss_key = IXGBE_READ_REG_ARRAY(hw, IXGBE_RSSRK(0), i);
2401 hash_key[(i * 4)] = rss_key & 0x000000FF;
2402 hash_key[(i * 4) + 1] = (rss_key >> 8) & 0x000000FF;
2403 hash_key[(i * 4) + 2] = (rss_key >> 16) & 0x000000FF;
2404 hash_key[(i * 4) + 3] = (rss_key >> 24) & 0x000000FF;
2408 /* Get RSS functions configured in MRQC register */
2409 mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC);
2410 if ((mrqc & IXGBE_MRQC_RSSEN) == 0) { /* RSS is disabled */
2411 rss_conf->rss_hf = 0;
2415 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4)
2416 rss_hf |= ETH_RSS_IPV4;
2417 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4_TCP)
2418 rss_hf |= ETH_RSS_IPV4_TCP;
2419 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6)
2420 rss_hf |= ETH_RSS_IPV6;
2421 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX)
2422 rss_hf |= ETH_RSS_IPV6_EX;
2423 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_TCP)
2424 rss_hf |= ETH_RSS_IPV6_TCP;
2425 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP)
2426 rss_hf |= ETH_RSS_IPV6_TCP_EX;
2427 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4_UDP)
2428 rss_hf |= ETH_RSS_IPV4_UDP;
2429 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_UDP)
2430 rss_hf |= ETH_RSS_IPV6_UDP;
2431 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP)
2432 rss_hf |= ETH_RSS_IPV6_UDP_EX;
2433 rss_conf->rss_hf = rss_hf;
2438 ixgbe_rss_configure(struct rte_eth_dev *dev)
2440 struct rte_eth_rss_conf rss_conf;
2441 struct ixgbe_hw *hw;
2446 PMD_INIT_FUNC_TRACE();
2447 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2450 * Fill in redirection table
2451 * The byte-swap is needed because NIC registers are in
2452 * little-endian order.
2455 for (i = 0, j = 0; i < 128; i++, j++) {
2456 if (j == dev->data->nb_rx_queues)
2458 reta = (reta << 8) | j;
2460 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2),
2465 * Configure the RSS key and the RSS protocols used to compute
2466 * the RSS hash of input packets.
2468 rss_conf = dev->data->dev_conf.rx_adv_conf.rss_conf;
2469 if ((rss_conf.rss_hf & IXGBE_RSS_OFFLOAD_ALL) == 0) {
2470 ixgbe_rss_disable(dev);
2473 if (rss_conf.rss_key == NULL)
2474 rss_conf.rss_key = rss_intel_key; /* Default hash key */
2475 ixgbe_hw_rss_hash_set(hw, &rss_conf);
2478 #define NUM_VFTA_REGISTERS 128
2479 #define NIC_RX_BUFFER_SIZE 0x200
2482 ixgbe_vmdq_dcb_configure(struct rte_eth_dev *dev)
2484 struct rte_eth_vmdq_dcb_conf *cfg;
2485 struct ixgbe_hw *hw;
2486 enum rte_eth_nb_pools num_pools;
2487 uint32_t mrqc, vt_ctl, queue_mapping, vlanctrl;
2489 uint8_t nb_tcs; /* number of traffic classes */
2492 PMD_INIT_FUNC_TRACE();
2493 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2494 cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_dcb_conf;
2495 num_pools = cfg->nb_queue_pools;
2496 /* Check we have a valid number of pools */
2497 if (num_pools != ETH_16_POOLS && num_pools != ETH_32_POOLS) {
2498 ixgbe_rss_disable(dev);
2501 /* 16 pools -> 8 traffic classes, 32 pools -> 4 traffic classes */
2502 nb_tcs = (uint8_t)(ETH_VMDQ_DCB_NUM_QUEUES / (int)num_pools);
2506 * split rx buffer up into sections, each for 1 traffic class
2508 pbsize = (uint16_t)(NIC_RX_BUFFER_SIZE / nb_tcs);
2509 for (i = 0 ; i < nb_tcs; i++) {
2510 uint32_t rxpbsize = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i));
2511 rxpbsize &= (~(0x3FF << IXGBE_RXPBSIZE_SHIFT));
2512 /* clear 10 bits. */
2513 rxpbsize |= (pbsize << IXGBE_RXPBSIZE_SHIFT); /* set value */
2514 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
2516 /* zero alloc all unused TCs */
2517 for (i = nb_tcs; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2518 uint32_t rxpbsize = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i));
2519 rxpbsize &= (~( 0x3FF << IXGBE_RXPBSIZE_SHIFT ));
2520 /* clear 10 bits. */
2521 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
2524 /* MRQC: enable vmdq and dcb */
2525 mrqc = ((num_pools == ETH_16_POOLS) ? \
2526 IXGBE_MRQC_VMDQRT8TCEN : IXGBE_MRQC_VMDQRT4TCEN );
2527 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2529 /* PFVTCTL: turn on virtualisation and set the default pool */
2530 vt_ctl = IXGBE_VT_CTL_VT_ENABLE | IXGBE_VT_CTL_REPLEN;
2531 if (cfg->enable_default_pool) {
2532 vt_ctl |= (cfg->default_pool << IXGBE_VT_CTL_POOL_SHIFT);
2534 vt_ctl |= IXGBE_VT_CTL_DIS_DEFPL;
2537 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vt_ctl);
2539 /* RTRUP2TC: mapping user priorities to traffic classes (TCs) */
2541 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++)
2543 * mapping is done with 3 bits per priority,
2544 * so shift by i*3 each time
2546 queue_mapping |= ((cfg->dcb_queue[i] & 0x07) << (i * 3));
2548 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, queue_mapping);
2550 /* RTRPCS: DCB related */
2551 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, IXGBE_RMCS_RRM);
2553 /* VLNCTRL: enable vlan filtering and allow all vlan tags through */
2554 vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2555 vlanctrl |= IXGBE_VLNCTRL_VFE ; /* enable vlan filters */
2556 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl);
2558 /* VFTA - enable all vlan filters */
2559 for (i = 0; i < NUM_VFTA_REGISTERS; i++) {
2560 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), 0xFFFFFFFF);
2563 /* VFRE: pool enabling for receive - 16 or 32 */
2564 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), \
2565 num_pools == ETH_16_POOLS ? 0xFFFF : 0xFFFFFFFF);
2568 * MPSAR - allow pools to read specific mac addresses
2569 * In this case, all pools should be able to read from mac addr 0
2571 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(0), 0xFFFFFFFF);
2572 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(0), 0xFFFFFFFF);
2574 /* PFVLVF, PFVLVFB: set up filters for vlan tags as configured */
2575 for (i = 0; i < cfg->nb_pool_maps; i++) {
2576 /* set vlan id in VF register and set the valid bit */
2577 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), (IXGBE_VLVF_VIEN | \
2578 (cfg->pool_map[i].vlan_id & 0xFFF)));
2580 * Put the allowed pools in VFB reg. As we only have 16 or 32
2581 * pools, we only need to use the first half of the register
2584 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(i*2), cfg->pool_map[i].pools);
2589 * ixgbe_dcb_config_tx_hw_config - Configure general DCB TX parameters
2590 * @hw: pointer to hardware structure
2591 * @dcb_config: pointer to ixgbe_dcb_config structure
2594 ixgbe_dcb_tx_hw_config(struct ixgbe_hw *hw,
2595 struct ixgbe_dcb_config *dcb_config)
2600 PMD_INIT_FUNC_TRACE();
2601 if (hw->mac.type != ixgbe_mac_82598EB) {
2602 /* Disable the Tx desc arbiter so that MTQC can be changed */
2603 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
2604 reg |= IXGBE_RTTDCS_ARBDIS;
2605 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
2607 /* Enable DCB for Tx with 8 TCs */
2608 if (dcb_config->num_tcs.pg_tcs == 8) {
2609 reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
2612 reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
2614 if (dcb_config->vt_mode)
2615 reg |= IXGBE_MTQC_VT_ENA;
2616 IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg);
2618 /* Disable drop for all queues */
2619 for (q = 0; q < 128; q++)
2620 IXGBE_WRITE_REG(hw, IXGBE_QDE,
2621 (IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT)));
2623 /* Enable the Tx desc arbiter */
2624 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
2625 reg &= ~IXGBE_RTTDCS_ARBDIS;
2626 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
2628 /* Enable Security TX Buffer IFG for DCB */
2629 reg = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
2630 reg |= IXGBE_SECTX_DCB;
2631 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, reg);
2637 * ixgbe_vmdq_dcb_hw_tx_config - Configure general VMDQ+DCB TX parameters
2638 * @dev: pointer to rte_eth_dev structure
2639 * @dcb_config: pointer to ixgbe_dcb_config structure
2642 ixgbe_vmdq_dcb_hw_tx_config(struct rte_eth_dev *dev,
2643 struct ixgbe_dcb_config *dcb_config)
2645 struct rte_eth_vmdq_dcb_tx_conf *vmdq_tx_conf =
2646 &dev->data->dev_conf.tx_adv_conf.vmdq_dcb_tx_conf;
2647 struct ixgbe_hw *hw =
2648 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2650 PMD_INIT_FUNC_TRACE();
2651 if (hw->mac.type != ixgbe_mac_82598EB)
2652 /*PF VF Transmit Enable*/
2653 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0),
2654 vmdq_tx_conf->nb_queue_pools == ETH_16_POOLS ? 0xFFFF : 0xFFFFFFFF);
2656 /*Configure general DCB TX parameters*/
2657 ixgbe_dcb_tx_hw_config(hw,dcb_config);
2662 ixgbe_vmdq_dcb_rx_config(struct rte_eth_dev *dev,
2663 struct ixgbe_dcb_config *dcb_config)
2665 struct rte_eth_vmdq_dcb_conf *vmdq_rx_conf =
2666 &dev->data->dev_conf.rx_adv_conf.vmdq_dcb_conf;
2667 struct ixgbe_dcb_tc_config *tc;
2670 /* convert rte_eth_conf.rx_adv_conf to struct ixgbe_dcb_config */
2671 if (vmdq_rx_conf->nb_queue_pools == ETH_16_POOLS ) {
2672 dcb_config->num_tcs.pg_tcs = ETH_8_TCS;
2673 dcb_config->num_tcs.pfc_tcs = ETH_8_TCS;
2676 dcb_config->num_tcs.pg_tcs = ETH_4_TCS;
2677 dcb_config->num_tcs.pfc_tcs = ETH_4_TCS;
2679 /* User Priority to Traffic Class mapping */
2680 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2681 j = vmdq_rx_conf->dcb_queue[i];
2682 tc = &dcb_config->tc_config[j];
2683 tc->path[IXGBE_DCB_RX_CONFIG].up_to_tc_bitmap =
2689 ixgbe_dcb_vt_tx_config(struct rte_eth_dev *dev,
2690 struct ixgbe_dcb_config *dcb_config)
2692 struct rte_eth_vmdq_dcb_tx_conf *vmdq_tx_conf =
2693 &dev->data->dev_conf.tx_adv_conf.vmdq_dcb_tx_conf;
2694 struct ixgbe_dcb_tc_config *tc;
2697 /* convert rte_eth_conf.rx_adv_conf to struct ixgbe_dcb_config */
2698 if (vmdq_tx_conf->nb_queue_pools == ETH_16_POOLS ) {
2699 dcb_config->num_tcs.pg_tcs = ETH_8_TCS;
2700 dcb_config->num_tcs.pfc_tcs = ETH_8_TCS;
2703 dcb_config->num_tcs.pg_tcs = ETH_4_TCS;
2704 dcb_config->num_tcs.pfc_tcs = ETH_4_TCS;
2707 /* User Priority to Traffic Class mapping */
2708 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2709 j = vmdq_tx_conf->dcb_queue[i];
2710 tc = &dcb_config->tc_config[j];
2711 tc->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap =
2718 ixgbe_dcb_rx_config(struct rte_eth_dev *dev,
2719 struct ixgbe_dcb_config *dcb_config)
2721 struct rte_eth_dcb_rx_conf *rx_conf =
2722 &dev->data->dev_conf.rx_adv_conf.dcb_rx_conf;
2723 struct ixgbe_dcb_tc_config *tc;
2726 dcb_config->num_tcs.pg_tcs = (uint8_t)rx_conf->nb_tcs;
2727 dcb_config->num_tcs.pfc_tcs = (uint8_t)rx_conf->nb_tcs;
2729 /* User Priority to Traffic Class mapping */
2730 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2731 j = rx_conf->dcb_queue[i];
2732 tc = &dcb_config->tc_config[j];
2733 tc->path[IXGBE_DCB_RX_CONFIG].up_to_tc_bitmap =
2739 ixgbe_dcb_tx_config(struct rte_eth_dev *dev,
2740 struct ixgbe_dcb_config *dcb_config)
2742 struct rte_eth_dcb_tx_conf *tx_conf =
2743 &dev->data->dev_conf.tx_adv_conf.dcb_tx_conf;
2744 struct ixgbe_dcb_tc_config *tc;
2747 dcb_config->num_tcs.pg_tcs = (uint8_t)tx_conf->nb_tcs;
2748 dcb_config->num_tcs.pfc_tcs = (uint8_t)tx_conf->nb_tcs;
2750 /* User Priority to Traffic Class mapping */
2751 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2752 j = tx_conf->dcb_queue[i];
2753 tc = &dcb_config->tc_config[j];
2754 tc->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap =
2760 * ixgbe_dcb_rx_hw_config - Configure general DCB RX HW parameters
2761 * @hw: pointer to hardware structure
2762 * @dcb_config: pointer to ixgbe_dcb_config structure
2765 ixgbe_dcb_rx_hw_config(struct ixgbe_hw *hw,
2766 struct ixgbe_dcb_config *dcb_config)
2772 PMD_INIT_FUNC_TRACE();
2774 * Disable the arbiter before changing parameters
2775 * (always enable recycle mode; WSP)
2777 reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC | IXGBE_RTRPCS_ARBDIS;
2778 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg);
2780 if (hw->mac.type != ixgbe_mac_82598EB) {
2781 reg = IXGBE_READ_REG(hw, IXGBE_MRQC);
2782 if (dcb_config->num_tcs.pg_tcs == 4) {
2783 if (dcb_config->vt_mode)
2784 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
2785 IXGBE_MRQC_VMDQRT4TCEN;
2787 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, 0);
2788 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
2792 if (dcb_config->num_tcs.pg_tcs == 8) {
2793 if (dcb_config->vt_mode)
2794 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
2795 IXGBE_MRQC_VMDQRT8TCEN;
2797 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, 0);
2798 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
2803 IXGBE_WRITE_REG(hw, IXGBE_MRQC, reg);
2806 /* VLNCTRL: enable vlan filtering and allow all vlan tags through */
2807 vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2808 vlanctrl |= IXGBE_VLNCTRL_VFE ; /* enable vlan filters */
2809 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl);
2811 /* VFTA - enable all vlan filters */
2812 for (i = 0; i < NUM_VFTA_REGISTERS; i++) {
2813 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), 0xFFFFFFFF);
2817 * Configure Rx packet plane (recycle mode; WSP) and
2820 reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC;
2821 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg);
2827 ixgbe_dcb_hw_arbite_rx_config(struct ixgbe_hw *hw, uint16_t *refill,
2828 uint16_t *max,uint8_t *bwg_id, uint8_t *tsa, uint8_t *map)
2830 switch (hw->mac.type) {
2831 case ixgbe_mac_82598EB:
2832 ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max, tsa);
2834 case ixgbe_mac_82599EB:
2835 case ixgbe_mac_X540:
2836 ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max, bwg_id,
2845 ixgbe_dcb_hw_arbite_tx_config(struct ixgbe_hw *hw, uint16_t *refill, uint16_t *max,
2846 uint8_t *bwg_id, uint8_t *tsa, uint8_t *map)
2848 switch (hw->mac.type) {
2849 case ixgbe_mac_82598EB:
2850 ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max, bwg_id,tsa);
2851 ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max, bwg_id,tsa);
2853 case ixgbe_mac_82599EB:
2854 case ixgbe_mac_X540:
2855 ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max, bwg_id,tsa);
2856 ixgbe_dcb_config_tx_data_arbiter_82599(hw, refill, max, bwg_id,tsa, map);
2863 #define DCB_RX_CONFIG 1
2864 #define DCB_TX_CONFIG 1
2865 #define DCB_TX_PB 1024
2867 * ixgbe_dcb_hw_configure - Enable DCB and configure
2868 * general DCB in VT mode and non-VT mode parameters
2869 * @dev: pointer to rte_eth_dev structure
2870 * @dcb_config: pointer to ixgbe_dcb_config structure
2873 ixgbe_dcb_hw_configure(struct rte_eth_dev *dev,
2874 struct ixgbe_dcb_config *dcb_config)
2877 uint8_t i,pfc_en,nb_tcs;
2879 uint8_t config_dcb_rx = 0;
2880 uint8_t config_dcb_tx = 0;
2881 uint8_t tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
2882 uint8_t bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
2883 uint16_t refill[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
2884 uint16_t max[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
2885 uint8_t map[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
2886 struct ixgbe_dcb_tc_config *tc;
2887 uint32_t max_frame = dev->data->mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
2888 struct ixgbe_hw *hw =
2889 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2891 switch(dev->data->dev_conf.rxmode.mq_mode){
2892 case ETH_MQ_RX_VMDQ_DCB:
2893 dcb_config->vt_mode = true;
2894 if (hw->mac.type != ixgbe_mac_82598EB) {
2895 config_dcb_rx = DCB_RX_CONFIG;
2897 *get dcb and VT rx configuration parameters
2900 ixgbe_vmdq_dcb_rx_config(dev,dcb_config);
2901 /*Configure general VMDQ and DCB RX parameters*/
2902 ixgbe_vmdq_dcb_configure(dev);
2906 dcb_config->vt_mode = false;
2907 config_dcb_rx = DCB_RX_CONFIG;
2908 /* Get dcb TX configuration parameters from rte_eth_conf */
2909 ixgbe_dcb_rx_config(dev,dcb_config);
2910 /*Configure general DCB RX parameters*/
2911 ixgbe_dcb_rx_hw_config(hw, dcb_config);
2914 PMD_INIT_LOG(ERR, "Incorrect DCB RX mode configuration\n");
2917 switch (dev->data->dev_conf.txmode.mq_mode) {
2918 case ETH_MQ_TX_VMDQ_DCB:
2919 dcb_config->vt_mode = true;
2920 config_dcb_tx = DCB_TX_CONFIG;
2921 /* get DCB and VT TX configuration parameters from rte_eth_conf */
2922 ixgbe_dcb_vt_tx_config(dev,dcb_config);
2923 /*Configure general VMDQ and DCB TX parameters*/
2924 ixgbe_vmdq_dcb_hw_tx_config(dev,dcb_config);
2928 dcb_config->vt_mode = false;
2929 config_dcb_tx = DCB_TX_CONFIG;
2930 /*get DCB TX configuration parameters from rte_eth_conf*/
2931 ixgbe_dcb_tx_config(dev,dcb_config);
2932 /*Configure general DCB TX parameters*/
2933 ixgbe_dcb_tx_hw_config(hw, dcb_config);
2936 PMD_INIT_LOG(ERR, "Incorrect DCB TX mode configuration\n");
2940 nb_tcs = dcb_config->num_tcs.pfc_tcs;
2942 ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_RX_CONFIG, map);
2943 if(nb_tcs == ETH_4_TCS) {
2944 /* Avoid un-configured priority mapping to TC0 */
2946 uint8_t mask = 0xFF;
2947 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES - 4; i++)
2948 mask = (uint8_t)(mask & (~ (1 << map[i])));
2949 for (i = 0; mask && (i < IXGBE_DCB_MAX_TRAFFIC_CLASS); i++) {
2950 if ((mask & 0x1) && (j < ETH_DCB_NUM_USER_PRIORITIES))
2954 /* Re-configure 4 TCs BW */
2955 for (i = 0; i < nb_tcs; i++) {
2956 tc = &dcb_config->tc_config[i];
2957 tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent =
2958 (uint8_t)(100 / nb_tcs);
2959 tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent =
2960 (uint8_t)(100 / nb_tcs);
2962 for (; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
2963 tc = &dcb_config->tc_config[i];
2964 tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent = 0;
2965 tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent = 0;
2970 /* Set RX buffer size */
2971 pbsize = (uint16_t)(NIC_RX_BUFFER_SIZE / nb_tcs);
2972 uint32_t rxpbsize = pbsize << IXGBE_RXPBSIZE_SHIFT;
2973 for (i = 0 ; i < nb_tcs; i++) {
2974 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
2976 /* zero alloc all unused TCs */
2977 for (; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2978 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
2982 /* Only support an equally distributed Tx packet buffer strategy. */
2983 uint32_t txpktsize = IXGBE_TXPBSIZE_MAX / nb_tcs;
2984 uint32_t txpbthresh = (txpktsize / DCB_TX_PB) - IXGBE_TXPKT_SIZE_MAX;
2985 for (i = 0; i < nb_tcs; i++) {
2986 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
2987 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
2989 /* Clear unused TCs, if any, to zero buffer size*/
2990 for (; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2991 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
2992 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
2996 /*Calculates traffic class credits*/
2997 ixgbe_dcb_calculate_tc_credits_cee(hw, dcb_config,max_frame,
2998 IXGBE_DCB_TX_CONFIG);
2999 ixgbe_dcb_calculate_tc_credits_cee(hw, dcb_config,max_frame,
3000 IXGBE_DCB_RX_CONFIG);
3003 /* Unpack CEE standard containers */
3004 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_RX_CONFIG, refill);
3005 ixgbe_dcb_unpack_max_cee(dcb_config, max);
3006 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_RX_CONFIG, bwgid);
3007 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_RX_CONFIG, tsa);
3008 /* Configure PG(ETS) RX */
3009 ixgbe_dcb_hw_arbite_rx_config(hw,refill,max,bwgid,tsa,map);
3013 /* Unpack CEE standard containers */
3014 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill);
3015 ixgbe_dcb_unpack_max_cee(dcb_config, max);
3016 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid);
3017 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa);
3018 /* Configure PG(ETS) TX */
3019 ixgbe_dcb_hw_arbite_tx_config(hw,refill,max,bwgid,tsa,map);
3022 /*Configure queue statistics registers*/
3023 ixgbe_dcb_config_tc_stats_82599(hw, dcb_config);
3025 /* Check if the PFC is supported */
3026 if(dev->data->dev_conf.dcb_capability_en & ETH_DCB_PFC_SUPPORT) {
3027 pbsize = (uint16_t) (NIC_RX_BUFFER_SIZE / nb_tcs);
3028 for (i = 0; i < nb_tcs; i++) {
3030 * If the TC count is 8,and the default high_water is 48,
3031 * the low_water is 16 as default.
3033 hw->fc.high_water[i] = (pbsize * 3 ) / 4;
3034 hw->fc.low_water[i] = pbsize / 4;
3035 /* Enable pfc for this TC */
3036 tc = &dcb_config->tc_config[i];
3037 tc->pfc = ixgbe_dcb_pfc_enabled;
3039 ixgbe_dcb_unpack_pfc_cee(dcb_config, map, &pfc_en);
3040 if(dcb_config->num_tcs.pfc_tcs == ETH_4_TCS)
3042 ret = ixgbe_dcb_config_pfc(hw, pfc_en, map);
3049 * ixgbe_configure_dcb - Configure DCB Hardware
3050 * @dev: pointer to rte_eth_dev
3052 void ixgbe_configure_dcb(struct rte_eth_dev *dev)
3054 struct ixgbe_dcb_config *dcb_cfg =
3055 IXGBE_DEV_PRIVATE_TO_DCB_CFG(dev->data->dev_private);
3056 struct rte_eth_conf *dev_conf = &(dev->data->dev_conf);
3058 PMD_INIT_FUNC_TRACE();
3060 /* check support mq_mode for DCB */
3061 if ((dev_conf->rxmode.mq_mode != ETH_MQ_RX_VMDQ_DCB) &&
3062 (dev_conf->rxmode.mq_mode != ETH_MQ_RX_DCB))
3065 if (dev->data->nb_rx_queues != ETH_DCB_NUM_QUEUES)
3068 /** Configure DCB hardware **/
3069 ixgbe_dcb_hw_configure(dev,dcb_cfg);
3075 * VMDq only support for 10 GbE NIC.
3078 ixgbe_vmdq_rx_hw_configure(struct rte_eth_dev *dev)
3080 struct rte_eth_vmdq_rx_conf *cfg;
3081 struct ixgbe_hw *hw;
3082 enum rte_eth_nb_pools num_pools;
3083 uint32_t mrqc, vt_ctl, vlanctrl;
3086 PMD_INIT_FUNC_TRACE();
3087 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3088 cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_rx_conf;
3089 num_pools = cfg->nb_queue_pools;
3091 ixgbe_rss_disable(dev);
3093 /* MRQC: enable vmdq */
3094 mrqc = IXGBE_MRQC_VMDQEN;
3095 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
3097 /* PFVTCTL: turn on virtualisation and set the default pool */
3098 vt_ctl = IXGBE_VT_CTL_VT_ENABLE | IXGBE_VT_CTL_REPLEN;
3099 if (cfg->enable_default_pool)
3100 vt_ctl |= (cfg->default_pool << IXGBE_VT_CTL_POOL_SHIFT);
3102 vt_ctl |= IXGBE_VT_CTL_DIS_DEFPL;
3104 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vt_ctl);
3106 /* VLNCTRL: enable vlan filtering and allow all vlan tags through */
3107 vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3108 vlanctrl |= IXGBE_VLNCTRL_VFE ; /* enable vlan filters */
3109 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl);
3111 /* VFTA - enable all vlan filters */
3112 for (i = 0; i < NUM_VFTA_REGISTERS; i++)
3113 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), UINT32_MAX);
3115 /* VFRE: pool enabling for receive - 64 */
3116 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), UINT32_MAX);
3117 if (num_pools == ETH_64_POOLS)
3118 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), UINT32_MAX);
3121 * MPSAR - allow pools to read specific mac addresses
3122 * In this case, all pools should be able to read from mac addr 0
3124 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(0), UINT32_MAX);
3125 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(0), UINT32_MAX);
3127 /* PFVLVF, PFVLVFB: set up filters for vlan tags as configured */
3128 for (i = 0; i < cfg->nb_pool_maps; i++) {
3129 /* set vlan id in VF register and set the valid bit */
3130 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), (IXGBE_VLVF_VIEN | \
3131 (cfg->pool_map[i].vlan_id & IXGBE_RXD_VLAN_ID_MASK)));
3133 * Put the allowed pools in VFB reg. As we only have 16 or 64
3134 * pools, we only need to use the first half of the register
3137 if (((cfg->pool_map[i].pools >> 32) & UINT32_MAX) == 0)
3138 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(i*2), \
3139 (cfg->pool_map[i].pools & UINT32_MAX));
3141 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((i*2+1)), \
3142 ((cfg->pool_map[i].pools >> 32) \
3147 /* PFDMA Tx General Switch Control Enables VMDQ loopback */
3148 if (cfg->enable_loop_back) {
3149 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
3150 for (i = 0; i < RTE_IXGBE_VMTXSW_REGISTER_COUNT; i++)
3151 IXGBE_WRITE_REG(hw, IXGBE_VMTXSW(i), UINT32_MAX);
3154 IXGBE_WRITE_FLUSH(hw);
3158 * ixgbe_dcb_config_tx_hw_config - Configure general VMDq TX parameters
3159 * @hw: pointer to hardware structure
3162 ixgbe_vmdq_tx_hw_configure(struct ixgbe_hw *hw)
3167 PMD_INIT_FUNC_TRACE();
3168 /*PF VF Transmit Enable*/
3169 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), UINT32_MAX);
3170 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), UINT32_MAX);
3172 /* Disable the Tx desc arbiter so that MTQC can be changed */
3173 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3174 reg |= IXGBE_RTTDCS_ARBDIS;
3175 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
3177 reg = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF;
3178 IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg);
3180 /* Disable drop for all queues */
3181 for (q = 0; q < IXGBE_MAX_RX_QUEUE_NUM; q++)
3182 IXGBE_WRITE_REG(hw, IXGBE_QDE,
3183 (IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT)));
3185 /* Enable the Tx desc arbiter */
3186 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3187 reg &= ~IXGBE_RTTDCS_ARBDIS;
3188 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
3190 IXGBE_WRITE_FLUSH(hw);
3196 ixgbe_alloc_rx_queue_mbufs(struct igb_rx_queue *rxq)
3198 struct igb_rx_entry *rxe = rxq->sw_ring;
3202 /* Initialize software ring entries */
3203 for (i = 0; i < rxq->nb_rx_desc; i++) {
3204 volatile union ixgbe_adv_rx_desc *rxd;
3205 struct rte_mbuf *mbuf = rte_rxmbuf_alloc(rxq->mb_pool);
3207 PMD_INIT_LOG(ERR, "RX mbuf alloc failed queue_id=%u\n",
3208 (unsigned) rxq->queue_id);
3212 rte_mbuf_refcnt_set(mbuf, 1);
3214 mbuf->data_off = RTE_PKTMBUF_HEADROOM;
3216 mbuf->port = rxq->port_id;
3219 rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(mbuf));
3220 rxd = &rxq->rx_ring[i];
3221 rxd->read.hdr_addr = dma_addr;
3222 rxd->read.pkt_addr = dma_addr;
3230 ixgbe_dev_mq_rx_configure(struct rte_eth_dev *dev)
3232 struct ixgbe_hw *hw =
3233 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3235 if (hw->mac.type == ixgbe_mac_82598EB)
3238 if (RTE_ETH_DEV_SRIOV(dev).active == 0) {
3240 * SRIOV inactive scheme
3241 * any DCB/RSS w/o VMDq multi-queue setting
3243 switch (dev->data->dev_conf.rxmode.mq_mode) {
3245 ixgbe_rss_configure(dev);
3248 case ETH_MQ_RX_VMDQ_DCB:
3249 ixgbe_vmdq_dcb_configure(dev);
3252 case ETH_MQ_RX_VMDQ_ONLY:
3253 ixgbe_vmdq_rx_hw_configure(dev);
3256 case ETH_MQ_RX_NONE:
3257 /* if mq_mode is none, disable rss mode.*/
3258 default: ixgbe_rss_disable(dev);
3261 switch (RTE_ETH_DEV_SRIOV(dev).active) {
3263 * SRIOV active scheme
3264 * FIXME if support DCB/RSS together with VMDq & SRIOV
3267 IXGBE_WRITE_REG(hw, IXGBE_MRQC, IXGBE_MRQC_VMDQEN);
3271 IXGBE_WRITE_REG(hw, IXGBE_MRQC, IXGBE_MRQC_VMDQRT4TCEN);
3275 IXGBE_WRITE_REG(hw, IXGBE_MRQC, IXGBE_MRQC_VMDQRT8TCEN);
3278 PMD_INIT_LOG(ERR, "invalid pool number in IOV mode");
3286 ixgbe_dev_mq_tx_configure(struct rte_eth_dev *dev)
3288 struct ixgbe_hw *hw =
3289 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3293 if (hw->mac.type == ixgbe_mac_82598EB)
3296 /* disable arbiter before setting MTQC */
3297 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3298 rttdcs |= IXGBE_RTTDCS_ARBDIS;
3299 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3301 if (RTE_ETH_DEV_SRIOV(dev).active == 0) {
3303 * SRIOV inactive scheme
3304 * any DCB w/o VMDq multi-queue setting
3306 if (dev->data->dev_conf.txmode.mq_mode == ETH_MQ_TX_VMDQ_ONLY)
3307 ixgbe_vmdq_tx_hw_configure(hw);
3309 mtqc = IXGBE_MTQC_64Q_1PB;
3310 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc);
3313 switch (RTE_ETH_DEV_SRIOV(dev).active) {
3316 * SRIOV active scheme
3317 * FIXME if support DCB together with VMDq & SRIOV
3320 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF;
3323 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_32VF;
3326 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_RT_ENA |
3330 mtqc = IXGBE_MTQC_64Q_1PB;
3331 PMD_INIT_LOG(ERR, "invalid pool number in IOV mode");
3333 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc);
3336 /* re-enable arbiter */
3337 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
3338 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3344 * Initializes Receive Unit.
3347 ixgbe_dev_rx_init(struct rte_eth_dev *dev)
3349 struct ixgbe_hw *hw;
3350 struct igb_rx_queue *rxq;
3351 struct rte_pktmbuf_pool_private *mbp_priv;
3363 PMD_INIT_FUNC_TRACE();
3364 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3367 * Make sure receives are disabled while setting
3368 * up the RX context (registers, descriptor rings, etc.).
3370 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3371 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
3373 /* Enable receipt of broadcasted frames */
3374 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
3375 fctrl |= IXGBE_FCTRL_BAM;
3376 fctrl |= IXGBE_FCTRL_DPF;
3377 fctrl |= IXGBE_FCTRL_PMCF;
3378 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
3381 * Configure CRC stripping, if any.
3383 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3384 if (dev->data->dev_conf.rxmode.hw_strip_crc)
3385 hlreg0 |= IXGBE_HLREG0_RXCRCSTRP;
3387 hlreg0 &= ~IXGBE_HLREG0_RXCRCSTRP;
3390 * Configure jumbo frame support, if any.
3392 if (dev->data->dev_conf.rxmode.jumbo_frame == 1) {
3393 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
3394 maxfrs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
3395 maxfrs &= 0x0000FFFF;
3396 maxfrs |= (dev->data->dev_conf.rxmode.max_rx_pkt_len << 16);
3397 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, maxfrs);
3399 hlreg0 &= ~IXGBE_HLREG0_JUMBOEN;
3402 * If loopback mode is configured for 82599, set LPBK bit.
3404 if (hw->mac.type == ixgbe_mac_82599EB &&
3405 dev->data->dev_conf.lpbk_mode == IXGBE_LPBK_82599_TX_RX)
3406 hlreg0 |= IXGBE_HLREG0_LPBK;
3408 hlreg0 &= ~IXGBE_HLREG0_LPBK;
3410 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3412 /* Setup RX queues */
3413 for (i = 0; i < dev->data->nb_rx_queues; i++) {
3414 rxq = dev->data->rx_queues[i];
3417 * Reset crc_len in case it was changed after queue setup by a
3418 * call to configure.
3420 rxq->crc_len = (uint8_t)
3421 ((dev->data->dev_conf.rxmode.hw_strip_crc) ? 0 :
3424 /* Setup the Base and Length of the Rx Descriptor Rings */
3425 bus_addr = rxq->rx_ring_phys_addr;
3426 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(rxq->reg_idx),
3427 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
3428 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(rxq->reg_idx),
3429 (uint32_t)(bus_addr >> 32));
3430 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(rxq->reg_idx),
3431 rxq->nb_rx_desc * sizeof(union ixgbe_adv_rx_desc));
3432 IXGBE_WRITE_REG(hw, IXGBE_RDH(rxq->reg_idx), 0);
3433 IXGBE_WRITE_REG(hw, IXGBE_RDT(rxq->reg_idx), 0);
3435 /* Configure the SRRCTL register */
3436 #ifdef RTE_HEADER_SPLIT_ENABLE
3438 * Configure Header Split
3440 if (dev->data->dev_conf.rxmode.header_split) {
3441 if (hw->mac.type == ixgbe_mac_82599EB) {
3442 /* Must setup the PSRTYPE register */
3444 psrtype = IXGBE_PSRTYPE_TCPHDR |
3445 IXGBE_PSRTYPE_UDPHDR |
3446 IXGBE_PSRTYPE_IPV4HDR |
3447 IXGBE_PSRTYPE_IPV6HDR;
3448 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx), psrtype);
3450 srrctl = ((dev->data->dev_conf.rxmode.split_hdr_size <<
3451 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
3452 IXGBE_SRRCTL_BSIZEHDR_MASK);
3453 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
3456 srrctl = IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
3458 /* Set if packets are dropped when no descriptors available */
3460 srrctl |= IXGBE_SRRCTL_DROP_EN;
3463 * Configure the RX buffer size in the BSIZEPACKET field of
3464 * the SRRCTL register of the queue.
3465 * The value is in 1 KB resolution. Valid values can be from
3468 mbp_priv = rte_mempool_get_priv(rxq->mb_pool);
3469 buf_size = (uint16_t) (mbp_priv->mbuf_data_room_size -
3470 RTE_PKTMBUF_HEADROOM);
3471 srrctl |= ((buf_size >> IXGBE_SRRCTL_BSIZEPKT_SHIFT) &
3472 IXGBE_SRRCTL_BSIZEPKT_MASK);
3473 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(rxq->reg_idx), srrctl);
3475 buf_size = (uint16_t) ((srrctl & IXGBE_SRRCTL_BSIZEPKT_MASK) <<
3476 IXGBE_SRRCTL_BSIZEPKT_SHIFT);
3478 /* It adds dual VLAN length for supporting dual VLAN */
3479 if ((dev->data->dev_conf.rxmode.max_rx_pkt_len +
3480 2 * IXGBE_VLAN_TAG_SIZE) > buf_size){
3481 dev->data->scattered_rx = 1;
3482 #ifdef RTE_IXGBE_INC_VECTOR
3483 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts_vec;
3485 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts;
3490 if (dev->data->dev_conf.rxmode.enable_scatter) {
3491 #ifdef RTE_IXGBE_INC_VECTOR
3492 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts_vec;
3494 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts;
3496 dev->data->scattered_rx = 1;
3500 * Device configured with multiple RX queues.
3502 ixgbe_dev_mq_rx_configure(dev);
3505 * Setup the Checksum Register.
3506 * Disable Full-Packet Checksum which is mutually exclusive with RSS.
3507 * Enable IP/L4 checkum computation by hardware if requested to do so.
3509 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
3510 rxcsum |= IXGBE_RXCSUM_PCSD;
3511 if (dev->data->dev_conf.rxmode.hw_ip_checksum)
3512 rxcsum |= IXGBE_RXCSUM_IPPCSE;
3514 rxcsum &= ~IXGBE_RXCSUM_IPPCSE;
3516 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
3518 if (hw->mac.type == ixgbe_mac_82599EB) {
3519 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
3520 if (dev->data->dev_conf.rxmode.hw_strip_crc)
3521 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
3523 rdrxctl &= ~IXGBE_RDRXCTL_CRCSTRIP;
3524 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
3525 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
3532 * Initializes Transmit Unit.
3535 ixgbe_dev_tx_init(struct rte_eth_dev *dev)
3537 struct ixgbe_hw *hw;
3538 struct igb_tx_queue *txq;
3544 PMD_INIT_FUNC_TRACE();
3545 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3547 /* Enable TX CRC (checksum offload requirement) */
3548 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3549 hlreg0 |= IXGBE_HLREG0_TXCRCEN;
3550 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3552 /* Setup the Base and Length of the Tx Descriptor Rings */
3553 for (i = 0; i < dev->data->nb_tx_queues; i++) {
3554 txq = dev->data->tx_queues[i];
3556 bus_addr = txq->tx_ring_phys_addr;
3557 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(txq->reg_idx),
3558 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
3559 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(txq->reg_idx),
3560 (uint32_t)(bus_addr >> 32));
3561 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(txq->reg_idx),
3562 txq->nb_tx_desc * sizeof(union ixgbe_adv_tx_desc));
3563 /* Setup the HW Tx Head and TX Tail descriptor pointers */
3564 IXGBE_WRITE_REG(hw, IXGBE_TDH(txq->reg_idx), 0);
3565 IXGBE_WRITE_REG(hw, IXGBE_TDT(txq->reg_idx), 0);
3568 * Disable Tx Head Writeback RO bit, since this hoses
3569 * bookkeeping if things aren't delivered in order.
3571 switch (hw->mac.type) {
3572 case ixgbe_mac_82598EB:
3573 txctrl = IXGBE_READ_REG(hw,
3574 IXGBE_DCA_TXCTRL(txq->reg_idx));
3575 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
3576 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(txq->reg_idx),
3580 case ixgbe_mac_82599EB:
3581 case ixgbe_mac_X540:
3583 txctrl = IXGBE_READ_REG(hw,
3584 IXGBE_DCA_TXCTRL_82599(txq->reg_idx));
3585 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
3586 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(txq->reg_idx),
3592 /* Device configured with multiple TX queues. */
3593 ixgbe_dev_mq_tx_configure(dev);
3597 * Set up link for 82599 loopback mode Tx->Rx.
3600 ixgbe_setup_loopback_link_82599(struct ixgbe_hw *hw)
3602 PMD_INIT_FUNC_TRACE();
3604 if (ixgbe_verify_lesm_fw_enabled_82599(hw)) {
3605 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM) !=
3607 PMD_INIT_LOG(ERR, "Could not enable loopback mode\n");
3616 IXGBE_AUTOC_LMS_10G_LINK_NO_AN | IXGBE_AUTOC_FLU);
3617 ixgbe_reset_pipeline_82599(hw);
3619 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
3625 * Start Transmit and Receive Units.
3628 ixgbe_dev_rxtx_start(struct rte_eth_dev *dev)
3630 struct ixgbe_hw *hw;
3631 struct igb_tx_queue *txq;
3632 struct igb_rx_queue *rxq;
3638 PMD_INIT_FUNC_TRACE();
3639 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3641 for (i = 0; i < dev->data->nb_tx_queues; i++) {
3642 txq = dev->data->tx_queues[i];
3643 /* Setup Transmit Threshold Registers */
3644 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
3645 txdctl |= txq->pthresh & 0x7F;
3646 txdctl |= ((txq->hthresh & 0x7F) << 8);
3647 txdctl |= ((txq->wthresh & 0x7F) << 16);
3648 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl);
3651 if (hw->mac.type != ixgbe_mac_82598EB) {
3652 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
3653 dmatxctl |= IXGBE_DMATXCTL_TE;
3654 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
3657 for (i = 0; i < dev->data->nb_tx_queues; i++) {
3658 txq = dev->data->tx_queues[i];
3659 if (!txq->start_tx_per_q)
3660 ixgbe_dev_tx_queue_start(dev, i);
3663 for (i = 0; i < dev->data->nb_rx_queues; i++) {
3664 rxq = dev->data->rx_queues[i];
3665 if (!rxq->start_rx_per_q)
3666 ixgbe_dev_rx_queue_start(dev, i);
3669 /* Enable Receive engine */
3670 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3671 if (hw->mac.type == ixgbe_mac_82598EB)
3672 rxctrl |= IXGBE_RXCTRL_DMBYPS;
3673 rxctrl |= IXGBE_RXCTRL_RXEN;
3674 hw->mac.ops.enable_rx_dma(hw, rxctrl);
3676 /* If loopback mode is enabled for 82599, set up the link accordingly */
3677 if (hw->mac.type == ixgbe_mac_82599EB &&
3678 dev->data->dev_conf.lpbk_mode == IXGBE_LPBK_82599_TX_RX)
3679 ixgbe_setup_loopback_link_82599(hw);
3684 * Start Receive Units for specified queue.
3687 ixgbe_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
3689 struct ixgbe_hw *hw;
3690 struct igb_rx_queue *rxq;
3694 PMD_INIT_FUNC_TRACE();
3695 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3697 if (rx_queue_id < dev->data->nb_rx_queues) {
3698 rxq = dev->data->rx_queues[rx_queue_id];
3700 /* Allocate buffers for descriptor rings */
3701 if (ixgbe_alloc_rx_queue_mbufs(rxq) != 0) {
3703 "Could not alloc mbuf for queue:%d\n",
3707 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
3708 rxdctl |= IXGBE_RXDCTL_ENABLE;
3709 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(rxq->reg_idx), rxdctl);
3711 /* Wait until RX Enable ready */
3712 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
3715 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
3716 } while (--poll_ms && !(rxdctl & IXGBE_RXDCTL_ENABLE));
3718 PMD_INIT_LOG(ERR, "Could not enable "
3719 "Rx Queue %d\n", rx_queue_id);
3721 IXGBE_WRITE_REG(hw, IXGBE_RDH(rxq->reg_idx), 0);
3722 IXGBE_WRITE_REG(hw, IXGBE_RDT(rxq->reg_idx), rxq->nb_rx_desc - 1);
3730 * Stop Receive Units for specified queue.
3733 ixgbe_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
3735 struct ixgbe_hw *hw;
3736 struct igb_rx_queue *rxq;
3740 PMD_INIT_FUNC_TRACE();
3741 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3743 if (rx_queue_id < dev->data->nb_rx_queues) {
3744 rxq = dev->data->rx_queues[rx_queue_id];
3746 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
3747 rxdctl &= ~IXGBE_RXDCTL_ENABLE;
3748 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(rxq->reg_idx), rxdctl);
3750 /* Wait until RX Enable ready */
3751 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
3754 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
3755 } while (--poll_ms && (rxdctl | IXGBE_RXDCTL_ENABLE));
3757 PMD_INIT_LOG(ERR, "Could not disable "
3758 "Rx Queue %d\n", rx_queue_id);
3760 rte_delay_us(RTE_IXGBE_WAIT_100_US);
3762 ixgbe_rx_queue_release_mbufs(rxq);
3763 ixgbe_reset_rx_queue(rxq);
3772 * Start Transmit Units for specified queue.
3775 ixgbe_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
3777 struct ixgbe_hw *hw;
3778 struct igb_tx_queue *txq;
3782 PMD_INIT_FUNC_TRACE();
3783 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3785 if (tx_queue_id < dev->data->nb_tx_queues) {
3786 txq = dev->data->tx_queues[tx_queue_id];
3787 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
3788 txdctl |= IXGBE_TXDCTL_ENABLE;
3789 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl);
3791 /* Wait until TX Enable ready */
3792 if (hw->mac.type == ixgbe_mac_82599EB) {
3793 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
3796 txdctl = IXGBE_READ_REG(hw,
3797 IXGBE_TXDCTL(txq->reg_idx));
3798 } while (--poll_ms && !(txdctl & IXGBE_TXDCTL_ENABLE));
3800 PMD_INIT_LOG(ERR, "Could not enable "
3801 "Tx Queue %d\n", tx_queue_id);
3804 IXGBE_WRITE_REG(hw, IXGBE_TDH(txq->reg_idx), 0);
3805 IXGBE_WRITE_REG(hw, IXGBE_TDT(txq->reg_idx), 0);
3813 * Stop Transmit Units for specified queue.
3816 ixgbe_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
3818 struct ixgbe_hw *hw;
3819 struct igb_tx_queue *txq;
3821 uint32_t txtdh, txtdt;
3824 PMD_INIT_FUNC_TRACE();
3825 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3827 if (tx_queue_id < dev->data->nb_tx_queues) {
3828 txq = dev->data->tx_queues[tx_queue_id];
3830 /* Wait until TX queue is empty */
3831 if (hw->mac.type == ixgbe_mac_82599EB) {
3832 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
3834 rte_delay_us(RTE_IXGBE_WAIT_100_US);
3835 txtdh = IXGBE_READ_REG(hw,
3836 IXGBE_TDH(txq->reg_idx));
3837 txtdt = IXGBE_READ_REG(hw,
3838 IXGBE_TDT(txq->reg_idx));
3839 } while (--poll_ms && (txtdh != txtdt));
3842 "Tx Queue %d is not empty when stopping.\n",
3846 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
3847 txdctl &= ~IXGBE_TXDCTL_ENABLE;
3848 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl);
3850 /* Wait until TX Enable ready */
3851 if (hw->mac.type == ixgbe_mac_82599EB) {
3852 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
3855 txdctl = IXGBE_READ_REG(hw,
3856 IXGBE_TXDCTL(txq->reg_idx));
3857 } while (--poll_ms && (txdctl | IXGBE_TXDCTL_ENABLE));
3859 PMD_INIT_LOG(ERR, "Could not disable "
3860 "Tx Queue %d\n", tx_queue_id);
3863 if (txq->ops != NULL) {
3864 txq->ops->release_mbufs(txq);
3865 txq->ops->reset(txq);
3874 * [VF] Initializes Receive Unit.
3877 ixgbevf_dev_rx_init(struct rte_eth_dev *dev)
3879 struct ixgbe_hw *hw;
3880 struct igb_rx_queue *rxq;
3881 struct rte_pktmbuf_pool_private *mbp_priv;
3888 PMD_INIT_FUNC_TRACE();
3889 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3892 * When the VF driver issues a IXGBE_VF_RESET request, the PF driver
3893 * disables the VF receipt of packets if the PF MTU is > 1500.
3894 * This is done to deal with 82599 limitations that imposes
3895 * the PF and all VFs to share the same MTU.
3896 * Then, the PF driver enables again the VF receipt of packet when
3897 * the VF driver issues a IXGBE_VF_SET_LPE request.
3898 * In the meantime, the VF device cannot be used, even if the VF driver
3899 * and the Guest VM network stack are ready to accept packets with a
3900 * size up to the PF MTU.
3901 * As a work-around to this PF behaviour, force the call to
3902 * ixgbevf_rlpml_set_vf even if jumbo frames are not used. This way,
3903 * VF packets received can work in all cases.
3905 ixgbevf_rlpml_set_vf(hw,
3906 (uint16_t)dev->data->dev_conf.rxmode.max_rx_pkt_len);
3908 /* Setup RX queues */
3909 dev->rx_pkt_burst = ixgbe_recv_pkts;
3910 for (i = 0; i < dev->data->nb_rx_queues; i++) {
3911 rxq = dev->data->rx_queues[i];
3913 /* Allocate buffers for descriptor rings */
3914 ret = ixgbe_alloc_rx_queue_mbufs(rxq);
3918 /* Setup the Base and Length of the Rx Descriptor Rings */
3919 bus_addr = rxq->rx_ring_phys_addr;
3921 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(i),
3922 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
3923 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(i),
3924 (uint32_t)(bus_addr >> 32));
3925 IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(i),
3926 rxq->nb_rx_desc * sizeof(union ixgbe_adv_rx_desc));
3927 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(i), 0);
3928 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), 0);
3931 /* Configure the SRRCTL register */
3932 #ifdef RTE_HEADER_SPLIT_ENABLE
3934 * Configure Header Split
3936 if (dev->data->dev_conf.rxmode.header_split) {
3938 /* Must setup the PSRTYPE register */
3940 psrtype = IXGBE_PSRTYPE_TCPHDR |
3941 IXGBE_PSRTYPE_UDPHDR |
3942 IXGBE_PSRTYPE_IPV4HDR |
3943 IXGBE_PSRTYPE_IPV6HDR;
3945 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE(i), psrtype);
3947 srrctl = ((dev->data->dev_conf.rxmode.split_hdr_size <<
3948 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
3949 IXGBE_SRRCTL_BSIZEHDR_MASK);
3950 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
3953 srrctl = IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
3955 /* Set if packets are dropped when no descriptors available */
3957 srrctl |= IXGBE_SRRCTL_DROP_EN;
3960 * Configure the RX buffer size in the BSIZEPACKET field of
3961 * the SRRCTL register of the queue.
3962 * The value is in 1 KB resolution. Valid values can be from
3965 mbp_priv = rte_mempool_get_priv(rxq->mb_pool);
3966 buf_size = (uint16_t) (mbp_priv->mbuf_data_room_size -
3967 RTE_PKTMBUF_HEADROOM);
3968 srrctl |= ((buf_size >> IXGBE_SRRCTL_BSIZEPKT_SHIFT) &
3969 IXGBE_SRRCTL_BSIZEPKT_MASK);
3972 * VF modification to write virtual function SRRCTL register
3974 IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(i), srrctl);
3976 buf_size = (uint16_t) ((srrctl & IXGBE_SRRCTL_BSIZEPKT_MASK) <<
3977 IXGBE_SRRCTL_BSIZEPKT_SHIFT);
3979 /* It adds dual VLAN length for supporting dual VLAN */
3980 if ((dev->data->dev_conf.rxmode.max_rx_pkt_len +
3981 2 * IXGBE_VLAN_TAG_SIZE) > buf_size) {
3982 dev->data->scattered_rx = 1;
3983 #ifdef RTE_IXGBE_INC_VECTOR
3984 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts_vec;
3986 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts;
3991 if (dev->data->dev_conf.rxmode.enable_scatter) {
3992 #ifdef RTE_IXGBE_INC_VECTOR
3993 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts_vec;
3995 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts;
3997 dev->data->scattered_rx = 1;
4004 * [VF] Initializes Transmit Unit.
4007 ixgbevf_dev_tx_init(struct rte_eth_dev *dev)
4009 struct ixgbe_hw *hw;
4010 struct igb_tx_queue *txq;
4015 PMD_INIT_FUNC_TRACE();
4016 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4018 /* Setup the Base and Length of the Tx Descriptor Rings */
4019 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4020 txq = dev->data->tx_queues[i];
4021 bus_addr = txq->tx_ring_phys_addr;
4022 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(i),
4023 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
4024 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(i),
4025 (uint32_t)(bus_addr >> 32));
4026 IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(i),
4027 txq->nb_tx_desc * sizeof(union ixgbe_adv_tx_desc));
4028 /* Setup the HW Tx Head and TX Tail descriptor pointers */
4029 IXGBE_WRITE_REG(hw, IXGBE_VFTDH(i), 0);
4030 IXGBE_WRITE_REG(hw, IXGBE_VFTDT(i), 0);
4033 * Disable Tx Head Writeback RO bit, since this hoses
4034 * bookkeeping if things aren't delivered in order.
4036 txctrl = IXGBE_READ_REG(hw,
4037 IXGBE_VFDCA_TXCTRL(i));
4038 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
4039 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(i),
4045 * [VF] Start Transmit and Receive Units.
4048 ixgbevf_dev_rxtx_start(struct rte_eth_dev *dev)
4050 struct ixgbe_hw *hw;
4051 struct igb_tx_queue *txq;
4052 struct igb_rx_queue *rxq;
4058 PMD_INIT_FUNC_TRACE();
4059 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4061 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4062 txq = dev->data->tx_queues[i];
4063 /* Setup Transmit Threshold Registers */
4064 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
4065 txdctl |= txq->pthresh & 0x7F;
4066 txdctl |= ((txq->hthresh & 0x7F) << 8);
4067 txdctl |= ((txq->wthresh & 0x7F) << 16);
4068 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl);
4071 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4073 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
4074 txdctl |= IXGBE_TXDCTL_ENABLE;
4075 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl);
4078 /* Wait until TX Enable ready */
4081 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
4082 } while (--poll_ms && !(txdctl & IXGBE_TXDCTL_ENABLE));
4084 PMD_INIT_LOG(ERR, "Could not enable "
4085 "Tx Queue %d\n", i);
4087 for (i = 0; i < dev->data->nb_rx_queues; i++) {
4089 rxq = dev->data->rx_queues[i];
4091 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
4092 rxdctl |= IXGBE_RXDCTL_ENABLE;
4093 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), rxdctl);
4095 /* Wait until RX Enable ready */
4099 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
4100 } while (--poll_ms && !(rxdctl & IXGBE_RXDCTL_ENABLE));
4102 PMD_INIT_LOG(ERR, "Could not enable "
4103 "Rx Queue %d\n", i);
4105 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), rxq->nb_rx_desc - 1);