--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2019 Marvell International Ltd.
+ */
+
+#include <rte_vect.h>
+
+#include "otx2_ethdev.h"
+#include "otx2_rx.h"
+
+#define NIX_DESCS_PER_LOOP 4
+#define CQE_CAST(x) ((struct nix_cqe_hdr_s *)(x))
+#define CQE_SZ(x) ((x) * NIX_CQ_ENTRY_SZ)
+
+static inline uint16_t
+nix_rx_nb_pkts(struct otx2_eth_rxq *rxq, const uint64_t wdata,
+ const uint16_t pkts, const uint32_t qmask)
+{
+ uint32_t available = rxq->available;
+
+ /* Update the available count if cached value is not enough */
+ if (unlikely(available < pkts)) {
+ uint64_t reg, head, tail;
+
+ /* Use LDADDA version to avoid reorder */
+ reg = otx2_atomic64_add_sync(wdata, rxq->cq_status);
+ /* CQ_OP_STATUS operation error */
+ if (reg & BIT_ULL(CQ_OP_STAT_OP_ERR) ||
+ reg & BIT_ULL(CQ_OP_STAT_CQ_ERR))
+ return 0;
+
+ tail = reg & 0xFFFFF;
+ head = (reg >> 20) & 0xFFFFF;
+ if (tail < head)
+ available = tail - head + qmask + 1;
+ else
+ available = tail - head;
+
+ rxq->available = available;
+ }
+
+ return RTE_MIN(pkts, available);
+}
+
+static __rte_always_inline uint16_t
+nix_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t pkts, const uint16_t flags)
+{
+ struct otx2_eth_rxq *rxq = rx_queue;
+ const uint64_t mbuf_init = rxq->mbuf_initializer;
+ const void *lookup_mem = rxq->lookup_mem;
+ const uint64_t data_off = rxq->data_off;
+ const uintptr_t desc = rxq->desc;
+ const uint64_t wdata = rxq->wdata;
+ const uint32_t qmask = rxq->qmask;
+ uint16_t packets = 0, nb_pkts;
+ uint32_t head = rxq->head;
+ struct nix_cqe_hdr_s *cq;
+ struct rte_mbuf *mbuf;
+
+ nb_pkts = nix_rx_nb_pkts(rxq, wdata, pkts, qmask);
+
+ while (packets < nb_pkts) {
+ /* Prefetch N desc ahead */
+ rte_prefetch_non_temporal((void *)(desc +
+ (CQE_SZ((head + 2) & qmask))));
+ cq = (struct nix_cqe_hdr_s *)(desc + CQE_SZ(head));
+
+ mbuf = nix_get_mbuf_from_cqe(cq, data_off);
+
+ otx2_nix_cqe_to_mbuf(cq, cq->tag, mbuf, lookup_mem, mbuf_init,
+ flags);
+ otx2_nix_mbuf_to_tstamp(mbuf, rxq->tstamp, flags,
+ (uint64_t *)((uint8_t *)mbuf + data_off));
+ rx_pkts[packets++] = mbuf;
+ otx2_prefetch_store_keep(mbuf);
+ head++;
+ head &= qmask;
+ }
+
+ rxq->head = head;
+ rxq->available -= nb_pkts;
+
+ /* Free all the CQs that we've processed */
+ otx2_write64((wdata | nb_pkts), rxq->cq_door);
+
+ return nb_pkts;
+}
+
+#if defined(RTE_ARCH_ARM64)
+
+static __rte_always_inline uint64_t
+nix_vlan_update(const uint64_t w2, uint64_t ol_flags, uint8x16_t *f)
+{
+ if (w2 & BIT_ULL(21) /* vtag0_gone */) {
+ ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
+ *f = vsetq_lane_u16((uint16_t)(w2 >> 32), *f, 5);
+ }
+
+ return ol_flags;
+}
+
+static __rte_always_inline uint64_t
+nix_qinq_update(const uint64_t w2, uint64_t ol_flags, struct rte_mbuf *mbuf)
+{
+ if (w2 & BIT_ULL(23) /* vtag1_gone */) {
+ ol_flags |= PKT_RX_QINQ | PKT_RX_QINQ_STRIPPED;
+ mbuf->vlan_tci_outer = (uint16_t)(w2 >> 48);
+ }
+
+ return ol_flags;
+}
+
+static __rte_always_inline uint16_t
+nix_recv_pkts_vector(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t pkts, const uint16_t flags)
+{
+ struct otx2_eth_rxq *rxq = rx_queue; uint16_t packets = 0;
+ uint64x2_t cq0_w8, cq1_w8, cq2_w8, cq3_w8, mbuf01, mbuf23;
+ const uint64_t mbuf_initializer = rxq->mbuf_initializer;
+ const uint64x2_t data_off = vdupq_n_u64(rxq->data_off);
+ uint64_t ol_flags0, ol_flags1, ol_flags2, ol_flags3;
+ uint64x2_t rearm0 = vdupq_n_u64(mbuf_initializer);
+ uint64x2_t rearm1 = vdupq_n_u64(mbuf_initializer);
+ uint64x2_t rearm2 = vdupq_n_u64(mbuf_initializer);
+ uint64x2_t rearm3 = vdupq_n_u64(mbuf_initializer);
+ struct rte_mbuf *mbuf0, *mbuf1, *mbuf2, *mbuf3;
+ const uint16_t *lookup_mem = rxq->lookup_mem;
+ const uint32_t qmask = rxq->qmask;
+ const uint64_t wdata = rxq->wdata;
+ const uintptr_t desc = rxq->desc;
+ uint8x16_t f0, f1, f2, f3;
+ uint32_t head = rxq->head;
+ uint16_t pkts_left;
+
+ pkts = nix_rx_nb_pkts(rxq, wdata, pkts, qmask);
+ pkts_left = pkts & (NIX_DESCS_PER_LOOP - 1);
+
+ /* Packets has to be floor-aligned to NIX_DESCS_PER_LOOP */
+ pkts = RTE_ALIGN_FLOOR(pkts, NIX_DESCS_PER_LOOP);
+
+ while (packets < pkts) {
+ /* Exit loop if head is about to wrap and become unaligned */
+ if (((head + NIX_DESCS_PER_LOOP - 1) & qmask) <
+ NIX_DESCS_PER_LOOP) {
+ pkts_left += (pkts - packets);
+ break;
+ }
+
+ const uintptr_t cq0 = desc + CQE_SZ(head);
+
+ /* Prefetch N desc ahead */
+ rte_prefetch_non_temporal((void *)(cq0 + CQE_SZ(8)));
+ rte_prefetch_non_temporal((void *)(cq0 + CQE_SZ(9)));
+ rte_prefetch_non_temporal((void *)(cq0 + CQE_SZ(10)));
+ rte_prefetch_non_temporal((void *)(cq0 + CQE_SZ(11)));
+
+ /* Get NIX_RX_SG_S for size and buffer pointer */
+ cq0_w8 = vld1q_u64((uint64_t *)(cq0 + CQE_SZ(0) + 64));
+ cq1_w8 = vld1q_u64((uint64_t *)(cq0 + CQE_SZ(1) + 64));
+ cq2_w8 = vld1q_u64((uint64_t *)(cq0 + CQE_SZ(2) + 64));
+ cq3_w8 = vld1q_u64((uint64_t *)(cq0 + CQE_SZ(3) + 64));
+
+ /* Extract mbuf from NIX_RX_SG_S */
+ mbuf01 = vzip2q_u64(cq0_w8, cq1_w8);
+ mbuf23 = vzip2q_u64(cq2_w8, cq3_w8);
+ mbuf01 = vqsubq_u64(mbuf01, data_off);
+ mbuf23 = vqsubq_u64(mbuf23, data_off);
+
+ /* Move mbufs to scalar registers for future use */
+ mbuf0 = (struct rte_mbuf *)vgetq_lane_u64(mbuf01, 0);
+ mbuf1 = (struct rte_mbuf *)vgetq_lane_u64(mbuf01, 1);
+ mbuf2 = (struct rte_mbuf *)vgetq_lane_u64(mbuf23, 0);
+ mbuf3 = (struct rte_mbuf *)vgetq_lane_u64(mbuf23, 1);
+
+ /* Mask to get packet len from NIX_RX_SG_S */
+ const uint8x16_t shuf_msk = {
+ 0xFF, 0xFF, /* pkt_type set as unknown */
+ 0xFF, 0xFF, /* pkt_type set as unknown */
+ 0, 1, /* octet 1~0, low 16 bits pkt_len */
+ 0xFF, 0xFF, /* skip high 16 bits pkt_len, zero out */
+ 0, 1, /* octet 1~0, 16 bits data_len */
+ 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF
+ };
+
+ /* Form the rx_descriptor_fields1 with pkt_len and data_len */
+ f0 = vqtbl1q_u8(cq0_w8, shuf_msk);
+ f1 = vqtbl1q_u8(cq1_w8, shuf_msk);
+ f2 = vqtbl1q_u8(cq2_w8, shuf_msk);
+ f3 = vqtbl1q_u8(cq3_w8, shuf_msk);
+
+ /* Load CQE word0 and word 1 */
+ uint64_t cq0_w0 = ((uint64_t *)(cq0 + CQE_SZ(0)))[0];
+ uint64_t cq0_w1 = ((uint64_t *)(cq0 + CQE_SZ(0)))[1];
+ uint64_t cq1_w0 = ((uint64_t *)(cq0 + CQE_SZ(1)))[0];
+ uint64_t cq1_w1 = ((uint64_t *)(cq0 + CQE_SZ(1)))[1];
+ uint64_t cq2_w0 = ((uint64_t *)(cq0 + CQE_SZ(2)))[0];
+ uint64_t cq2_w1 = ((uint64_t *)(cq0 + CQE_SZ(2)))[1];
+ uint64_t cq3_w0 = ((uint64_t *)(cq0 + CQE_SZ(3)))[0];
+ uint64_t cq3_w1 = ((uint64_t *)(cq0 + CQE_SZ(3)))[1];
+
+ if (flags & NIX_RX_OFFLOAD_RSS_F) {
+ /* Fill rss in the rx_descriptor_fields1 */
+ f0 = vsetq_lane_u32(cq0_w0, f0, 3);
+ f1 = vsetq_lane_u32(cq1_w0, f1, 3);
+ f2 = vsetq_lane_u32(cq2_w0, f2, 3);
+ f3 = vsetq_lane_u32(cq3_w0, f3, 3);
+ ol_flags0 = PKT_RX_RSS_HASH;
+ ol_flags1 = PKT_RX_RSS_HASH;
+ ol_flags2 = PKT_RX_RSS_HASH;
+ ol_flags3 = PKT_RX_RSS_HASH;
+ } else {
+ ol_flags0 = 0; ol_flags1 = 0;
+ ol_flags2 = 0; ol_flags3 = 0;
+ }
+
+ if (flags & NIX_RX_OFFLOAD_PTYPE_F) {
+ /* Fill packet_type in the rx_descriptor_fields1 */
+ f0 = vsetq_lane_u32(nix_ptype_get(lookup_mem, cq0_w1),
+ f0, 0);
+ f1 = vsetq_lane_u32(nix_ptype_get(lookup_mem, cq1_w1),
+ f1, 0);
+ f2 = vsetq_lane_u32(nix_ptype_get(lookup_mem, cq2_w1),
+ f2, 0);
+ f3 = vsetq_lane_u32(nix_ptype_get(lookup_mem, cq3_w1),
+ f3, 0);
+ }
+
+ if (flags & NIX_RX_OFFLOAD_CHECKSUM_F) {
+ ol_flags0 |= nix_rx_olflags_get(lookup_mem, cq0_w1);
+ ol_flags1 |= nix_rx_olflags_get(lookup_mem, cq1_w1);
+ ol_flags2 |= nix_rx_olflags_get(lookup_mem, cq2_w1);
+ ol_flags3 |= nix_rx_olflags_get(lookup_mem, cq3_w1);
+ }
+
+ if (flags & NIX_RX_OFFLOAD_VLAN_STRIP_F) {
+ uint64_t cq0_w2 = *(uint64_t *)(cq0 + CQE_SZ(0) + 16);
+ uint64_t cq1_w2 = *(uint64_t *)(cq0 + CQE_SZ(1) + 16);
+ uint64_t cq2_w2 = *(uint64_t *)(cq0 + CQE_SZ(2) + 16);
+ uint64_t cq3_w2 = *(uint64_t *)(cq0 + CQE_SZ(3) + 16);
+
+ ol_flags0 = nix_vlan_update(cq0_w2, ol_flags0, &f0);
+ ol_flags1 = nix_vlan_update(cq1_w2, ol_flags1, &f1);
+ ol_flags2 = nix_vlan_update(cq2_w2, ol_flags2, &f2);
+ ol_flags3 = nix_vlan_update(cq3_w2, ol_flags3, &f3);
+
+ ol_flags0 = nix_qinq_update(cq0_w2, ol_flags0, mbuf0);
+ ol_flags1 = nix_qinq_update(cq1_w2, ol_flags1, mbuf1);
+ ol_flags2 = nix_qinq_update(cq2_w2, ol_flags2, mbuf2);
+ ol_flags3 = nix_qinq_update(cq3_w2, ol_flags3, mbuf3);
+ }
+
+ if (flags & NIX_RX_OFFLOAD_MARK_UPDATE_F) {
+ ol_flags0 = nix_update_match_id(*(uint16_t *)
+ (cq0 + CQE_SZ(0) + 38), ol_flags0, mbuf0);
+ ol_flags1 = nix_update_match_id(*(uint16_t *)
+ (cq0 + CQE_SZ(1) + 38), ol_flags1, mbuf1);
+ ol_flags2 = nix_update_match_id(*(uint16_t *)
+ (cq0 + CQE_SZ(2) + 38), ol_flags2, mbuf2);
+ ol_flags3 = nix_update_match_id(*(uint16_t *)
+ (cq0 + CQE_SZ(3) + 38), ol_flags3, mbuf3);
+ }
+
+ /* Form rearm_data with ol_flags */
+ rearm0 = vsetq_lane_u64(ol_flags0, rearm0, 1);
+ rearm1 = vsetq_lane_u64(ol_flags1, rearm1, 1);
+ rearm2 = vsetq_lane_u64(ol_flags2, rearm2, 1);
+ rearm3 = vsetq_lane_u64(ol_flags3, rearm3, 1);
+
+ /* Update rx_descriptor_fields1 */
+ vst1q_u64((uint64_t *)mbuf0->rx_descriptor_fields1, f0);
+ vst1q_u64((uint64_t *)mbuf1->rx_descriptor_fields1, f1);
+ vst1q_u64((uint64_t *)mbuf2->rx_descriptor_fields1, f2);
+ vst1q_u64((uint64_t *)mbuf3->rx_descriptor_fields1, f3);
+
+ /* Update rearm_data */
+ vst1q_u64((uint64_t *)mbuf0->rearm_data, rearm0);
+ vst1q_u64((uint64_t *)mbuf1->rearm_data, rearm1);
+ vst1q_u64((uint64_t *)mbuf2->rearm_data, rearm2);
+ vst1q_u64((uint64_t *)mbuf3->rearm_data, rearm3);
+
+ /* Store the mbufs to rx_pkts */
+ vst1q_u64((uint64_t *)&rx_pkts[packets], mbuf01);
+ vst1q_u64((uint64_t *)&rx_pkts[packets + 2], mbuf23);
+
+ /* Prefetch mbufs */
+ otx2_prefetch_store_keep(mbuf0);
+ otx2_prefetch_store_keep(mbuf1);
+ otx2_prefetch_store_keep(mbuf2);
+ otx2_prefetch_store_keep(mbuf3);
+
+ /* Mark mempool obj as "get" as it is alloc'ed by NIX */
+ __mempool_check_cookies(mbuf0->pool, (void **)&mbuf0, 1, 1);
+ __mempool_check_cookies(mbuf1->pool, (void **)&mbuf1, 1, 1);
+ __mempool_check_cookies(mbuf2->pool, (void **)&mbuf2, 1, 1);
+ __mempool_check_cookies(mbuf3->pool, (void **)&mbuf3, 1, 1);
+
+ /* Advance head pointer and packets */
+ head += NIX_DESCS_PER_LOOP; head &= qmask;
+ packets += NIX_DESCS_PER_LOOP;
+ }
+
+ rxq->head = head;
+ rxq->available -= packets;
+
+ rte_cio_wmb();
+ /* Free all the CQs that we've processed */
+ otx2_write64((rxq->wdata | packets), rxq->cq_door);
+
+ if (unlikely(pkts_left))
+ packets += nix_recv_pkts(rx_queue, &rx_pkts[packets],
+ pkts_left, flags);
+
+ return packets;
+}
+
+#else
+
+static inline uint16_t
+nix_recv_pkts_vector(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t pkts, const uint16_t flags)
+{
+ RTE_SET_USED(rx_queue);
+ RTE_SET_USED(rx_pkts);
+ RTE_SET_USED(pkts);
+ RTE_SET_USED(flags);
+
+ return 0;
+}
+
+#endif
+
+#define R(name, f6, f5, f4, f3, f2, f1, f0, flags) \
+static uint16_t __rte_noinline __rte_hot \
+otx2_nix_recv_pkts_ ## name(void *rx_queue, \
+ struct rte_mbuf **rx_pkts, uint16_t pkts) \
+{ \
+ return nix_recv_pkts(rx_queue, rx_pkts, pkts, (flags)); \
+} \
+ \
+static uint16_t __rte_noinline __rte_hot \
+otx2_nix_recv_pkts_mseg_ ## name(void *rx_queue, \
+ struct rte_mbuf **rx_pkts, uint16_t pkts) \
+{ \
+ return nix_recv_pkts(rx_queue, rx_pkts, pkts, \
+ (flags) | NIX_RX_MULTI_SEG_F); \
+} \
+ \
+static uint16_t __rte_noinline __rte_hot \
+otx2_nix_recv_pkts_vec_ ## name(void *rx_queue, \
+ struct rte_mbuf **rx_pkts, uint16_t pkts) \
+{ \
+ /* TSTMP is not supported by vector */ \
+ if ((flags) & NIX_RX_OFFLOAD_TSTAMP_F) \
+ return 0; \
+ return nix_recv_pkts_vector(rx_queue, rx_pkts, pkts, (flags)); \
+} \
+
+NIX_RX_FASTPATH_MODES
+#undef R
+
+static inline void
+pick_rx_func(struct rte_eth_dev *eth_dev,
+ const eth_rx_burst_t rx_burst[2][2][2][2][2][2][2])
+{
+ struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
+
+ /* [SEC] [TSTMP] [MARK] [VLAN] [CKSUM] [PTYPE] [RSS] */
+ eth_dev->rx_pkt_burst = rx_burst
+ [!!(dev->rx_offload_flags & NIX_RX_OFFLOAD_SECURITY_F)]
+ [!!(dev->rx_offload_flags & NIX_RX_OFFLOAD_TSTAMP_F)]
+ [!!(dev->rx_offload_flags & NIX_RX_OFFLOAD_MARK_UPDATE_F)]
+ [!!(dev->rx_offload_flags & NIX_RX_OFFLOAD_VLAN_STRIP_F)]
+ [!!(dev->rx_offload_flags & NIX_RX_OFFLOAD_CHECKSUM_F)]
+ [!!(dev->rx_offload_flags & NIX_RX_OFFLOAD_PTYPE_F)]
+ [!!(dev->rx_offload_flags & NIX_RX_OFFLOAD_RSS_F)];
+}
+
+void
+otx2_eth_set_rx_function(struct rte_eth_dev *eth_dev)
+{
+ struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
+
+ const eth_rx_burst_t nix_eth_rx_burst[2][2][2][2][2][2][2] = {
+#define R(name, f6, f5, f4, f3, f2, f1, f0, flags) \
+ [f6][f5][f4][f3][f2][f1][f0] = otx2_nix_recv_pkts_ ## name,
+
+NIX_RX_FASTPATH_MODES
+#undef R
+ };
+
+ const eth_rx_burst_t nix_eth_rx_burst_mseg[2][2][2][2][2][2][2] = {
+#define R(name, f6, f5, f4, f3, f2, f1, f0, flags) \
+ [f6][f5][f4][f3][f2][f1][f0] = otx2_nix_recv_pkts_mseg_ ## name,
+
+NIX_RX_FASTPATH_MODES
+#undef R
+ };
+
+ const eth_rx_burst_t nix_eth_rx_vec_burst[2][2][2][2][2][2][2] = {
+#define R(name, f6, f5, f4, f3, f2, f1, f0, flags) \
+ [f6][f5][f4][f3][f2][f1][f0] = otx2_nix_recv_pkts_vec_ ## name,
+
+NIX_RX_FASTPATH_MODES
+#undef R
+ };
+
+ /* For PTP enabled, scalar rx function should be chosen as most of the
+ * PTP apps are implemented to rx burst 1 pkt.
+ */
+ if (dev->scalar_ena || dev->rx_offloads & DEV_RX_OFFLOAD_TIMESTAMP)
+ pick_rx_func(eth_dev, nix_eth_rx_burst);
+ else
+ pick_rx_func(eth_dev, nix_eth_rx_vec_burst);
+
+ if (dev->rx_offloads & DEV_RX_OFFLOAD_SCATTER)
+ pick_rx_func(eth_dev, nix_eth_rx_burst_mseg);
+
+ /* Copy multi seg version with no offload for tear down sequence */
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+ dev->rx_pkt_burst_no_offload =
+ nix_eth_rx_burst_mseg[0][0][0][0][0][0][0];
+ rte_mb();
+}
projects / ceph.git / blobdiff