+++ /dev/null
-Description: i40e: implement vector PMD for altivec
-
- From: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
-
- This patch enables i40e driver in powerpc along with its altivec
- intrinsic support.
-
- Changes:
- v4 - docs and config update.
- v3 - minor corrections for coding style standard.
- v2 - minor corrections for gcc strict aliasing and coding style standard.
-
- Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
-
-Note: can be dropped >=DPDK 17.05
-
-Forwarded: yes, http://dpdk.org/dev/patchwork/patch/20680/
-Original-Author: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
-Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/dpdk/+bug/1670686
-Author: Christian Ehrhardt <christian.ehrhardt@canonical.com>
-Last-Update: 2017-03-07
-
---- a/MAINTAINERS
-+++ b/MAINTAINERS
-@@ -166,6 +166,7 @@
- M: Chao Zhu <chaozhu@linux.vnet.ibm.com>
- F: lib/librte_eal/common/arch/ppc_64/
- F: lib/librte_eal/common/include/arch/ppc_64/
-+F: drivers/net/i40e/i40e_rxtx_vec_altivec.c
-
- Intel x86
- M: Bruce Richardson <bruce.richardson@intel.com>
---- a/config/defconfig_ppc_64-power8-linuxapp-gcc
-+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
-@@ -49,7 +49,6 @@
- # Note: Initially, all of the PMD drivers compilation are turned off on Power
- # Will turn on them only after the successful testing on Power
- CONFIG_RTE_LIBRTE_IXGBE_PMD=n
--CONFIG_RTE_LIBRTE_I40E_PMD=n
- CONFIG_RTE_LIBRTE_VIRTIO_PMD=y
- CONFIG_RTE_LIBRTE_VMXNET3_PMD=n
- CONFIG_RTE_LIBRTE_ENIC_PMD=n
---- a/doc/guides/nics/features/i40e.ini
-+++ b/doc/guides/nics/features/i40e.ini
-@@ -46,3 +46,4 @@
- x86-32 = Y
- x86-64 = Y
- ARMv8 = Y
-+Power8 = Y
---- a/doc/guides/nics/features/i40e_vec.ini
-+++ b/doc/guides/nics/features/i40e_vec.ini
-@@ -38,3 +38,4 @@
- x86-32 = Y
- x86-64 = Y
- ARMv8 = Y
-+Power8 = Y
---- a/drivers/net/i40e/Makefile
-+++ b/drivers/net/i40e/Makefile
-@@ -99,6 +99,8 @@
- SRCS-$(CONFIG_RTE_LIBRTE_I40E_PMD) += i40e_rxtx.c
- ifeq ($(CONFIG_RTE_ARCH_ARM64),y)
- SRCS-$(CONFIG_RTE_LIBRTE_I40E_INC_VECTOR) += i40e_rxtx_vec_neon.c
-+else ifeq ($(CONFIG_RTE_ARCH_PPC_64),y)
-+SRCS-$(CONFIG_RTE_LIBRTE_I40E_INC_VECTOR) += i40e_rxtx_vec_altivec.c
- else
- SRCS-$(CONFIG_RTE_LIBRTE_I40E_INC_VECTOR) += i40e_rxtx_vec_sse.c
- endif
---- /dev/null
-+++ b/drivers/net/i40e/i40e_rxtx_vec_altivec.c
-@@ -0,0 +1,654 @@
-+/*-
-+ * BSD LICENSE
-+ *
-+ * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
-+ * Copyright(c) 2017 IBM Corporation.
-+ * All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ *
-+ * * Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions and the following disclaimer.
-+ * * Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in
-+ * the documentation and/or other materials provided with the
-+ * distribution.
-+ * * Neither the name of Intel Corporation nor the names of its
-+ * contributors may be used to endorse or promote products derived
-+ * from this software without specific prior written permission.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#include <stdint.h>
-+#include <rte_ethdev.h>
-+#include <rte_malloc.h>
-+
-+#include "base/i40e_prototype.h"
-+#include "base/i40e_type.h"
-+#include "i40e_ethdev.h"
-+#include "i40e_rxtx.h"
-+#include "i40e_rxtx_vec_common.h"
-+
-+#include <altivec.h>
-+
-+#pragma GCC diagnostic ignored "-Wcast-qual"
-+
-+static inline void
-+i40e_rxq_rearm(struct i40e_rx_queue *rxq)
-+{
-+ int i;
-+ uint16_t rx_id;
-+ volatile union i40e_rx_desc *rxdp;
-+
-+ struct i40e_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start];
-+ struct rte_mbuf *mb0, *mb1;
-+
-+ vector unsigned long hdr_room = (vector unsigned long){
-+ RTE_PKTMBUF_HEADROOM,
-+ RTE_PKTMBUF_HEADROOM};
-+ vector unsigned long dma_addr0, dma_addr1;
-+
-+ rxdp = rxq->rx_ring + rxq->rxrearm_start;
-+
-+ /* Pull 'n' more MBUFs into the software ring */
-+ if (rte_mempool_get_bulk(rxq->mp,
-+ (void *)rxep,
-+ RTE_I40E_RXQ_REARM_THRESH) < 0) {
-+ if (rxq->rxrearm_nb + RTE_I40E_RXQ_REARM_THRESH >=
-+ rxq->nb_rx_desc) {
-+ dma_addr0 = (vector unsigned long){};
-+ for (i = 0; i < RTE_I40E_DESCS_PER_LOOP; i++) {
-+ rxep[i].mbuf = &rxq->fake_mbuf;
-+ vec_st(dma_addr0, 0,
-+ (vector unsigned long *)&rxdp[i].read);
-+ }
-+ }
-+ rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
-+ RTE_I40E_RXQ_REARM_THRESH;
-+ return;
-+ }
-+
-+ /* Initialize the mbufs in vector, process 2 mbufs in one loop */
-+ for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; i += 2, rxep += 2) {
-+ vector unsigned long vaddr0, vaddr1;
-+ uintptr_t p0, p1;
-+
-+ mb0 = rxep[0].mbuf;
-+ mb1 = rxep[1].mbuf;
-+
-+ /* Flush mbuf with pkt template.
-+ * Data to be rearmed is 6 bytes long.
-+ * Though, RX will overwrite ol_flags that are coming next
-+ * anyway. So overwrite whole 8 bytes with one load:
-+ * 6 bytes of rearm_data plus first 2 bytes of ol_flags.
-+ */
-+ p0 = (uintptr_t)&mb0->rearm_data;
-+ *(uint64_t *)p0 = rxq->mbuf_initializer;
-+ p1 = (uintptr_t)&mb1->rearm_data;
-+ *(uint64_t *)p1 = rxq->mbuf_initializer;
-+
-+ /* load buf_addr(lo 64bit) and buf_physaddr(hi 64bit) */
-+ vaddr0 = vec_ld(0, (vector unsigned long *)&mb0->buf_addr);
-+ vaddr1 = vec_ld(0, (vector unsigned long *)&mb1->buf_addr);
-+
-+ /* convert pa to dma_addr hdr/data */
-+ dma_addr0 = vec_mergel(vaddr0, vaddr0);
-+ dma_addr1 = vec_mergel(vaddr1, vaddr1);
-+
-+ /* add headroom to pa values */
-+ dma_addr0 = vec_add(dma_addr0, hdr_room);
-+ dma_addr1 = vec_add(dma_addr1, hdr_room);
-+
-+ /* flush desc with pa dma_addr */
-+ vec_st(dma_addr0, 0, (vector unsigned long *)&rxdp++->read);
-+ vec_st(dma_addr1, 0, (vector unsigned long *)&rxdp++->read);
-+ }
-+
-+ rxq->rxrearm_start += RTE_I40E_RXQ_REARM_THRESH;
-+ if (rxq->rxrearm_start >= rxq->nb_rx_desc)
-+ rxq->rxrearm_start = 0;
-+
-+ rxq->rxrearm_nb -= RTE_I40E_RXQ_REARM_THRESH;
-+
-+ rx_id = (uint16_t)((rxq->rxrearm_start == 0) ?
-+ (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
-+
-+ /* Update the tail pointer on the NIC */
-+ I40E_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
-+}
-+
-+/* Handling the offload flags (olflags) field takes computation
-+ * time when receiving packets. Therefore we provide a flag to disable
-+ * the processing of the olflags field when they are not needed. This
-+ * gives improved performance, at the cost of losing the offload info
-+ * in the received packet
-+ */
-+#ifdef RTE_LIBRTE_I40E_RX_OLFLAGS_ENABLE
-+
-+static inline void
-+desc_to_olflags_v(vector unsigned long descs[4], struct rte_mbuf **rx_pkts)
-+{
-+ vector unsigned int vlan0, vlan1, rss, l3_l4e;
-+
-+ /* mask everything except RSS, flow director and VLAN flags
-+ * bit2 is for VLAN tag, bit11 for flow director indication
-+ * bit13:12 for RSS indication.
-+ */
-+ const vector unsigned int rss_vlan_msk = (vector unsigned int){
-+ (int32_t)0x1c03804, (int32_t)0x1c03804,
-+ (int32_t)0x1c03804, (int32_t)0x1c03804};
-+
-+ /* map rss and vlan type to rss hash and vlan flag */
-+ const vector unsigned char vlan_flags = (vector unsigned char){
-+ 0, 0, 0, 0,
-+ PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED, 0, 0, 0,
-+ 0, 0, 0, 0,
-+ 0, 0, 0, 0};
-+
-+ const vector unsigned char rss_flags = (vector unsigned char){
-+ 0, PKT_RX_FDIR, 0, 0,
-+ 0, 0, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH | PKT_RX_FDIR,
-+ 0, 0, 0, 0,
-+ 0, 0, 0, 0};
-+
-+ const vector unsigned char l3_l4e_flags = (vector unsigned char){
-+ 0,
-+ PKT_RX_IP_CKSUM_BAD,
-+ PKT_RX_L4_CKSUM_BAD,
-+ PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD,
-+ PKT_RX_EIP_CKSUM_BAD,
-+ PKT_RX_EIP_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD,
-+ PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD,
-+ PKT_RX_EIP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD
-+ | PKT_RX_IP_CKSUM_BAD,
-+ 0, 0, 0, 0, 0, 0, 0, 0};
-+
-+ vlan0 = (vector unsigned int)vec_mergel(descs[0], descs[1]);
-+ vlan1 = (vector unsigned int)vec_mergel(descs[2], descs[3]);
-+ vlan0 = (vector unsigned int)vec_mergeh(vlan0, vlan1);
-+
-+ vlan1 = vec_and(vlan0, rss_vlan_msk);
-+ vlan0 = (vector unsigned int)vec_perm(vlan_flags,
-+ (vector unsigned char){},
-+ *(vector unsigned char *)&vlan1);
-+
-+ rss = vec_sr(vlan1, (vector unsigned int){11, 11, 11, 11});
-+ rss = (vector unsigned int)vec_perm(rss_flags, (vector unsigned char){},
-+ *(vector unsigned char *)&rss);
-+
-+ l3_l4e = vec_sr(vlan1, (vector unsigned int){22, 22, 22, 22});
-+ l3_l4e = (vector unsigned int)vec_perm(l3_l4e_flags,
-+ (vector unsigned char){},
-+ *(vector unsigned char *)&l3_l4e);
-+
-+ vlan0 = vec_or(vlan0, rss);
-+ vlan0 = vec_or(vlan0, l3_l4e);
-+
-+ rx_pkts[0]->ol_flags = (uint64_t)vlan0[2];
-+ rx_pkts[1]->ol_flags = (uint64_t)vlan0[3];
-+ rx_pkts[2]->ol_flags = (uint64_t)vlan0[0];
-+ rx_pkts[3]->ol_flags = (uint64_t)vlan0[1];
-+}
-+#else
-+#define desc_to_olflags_v(desc, rx_pkts) do {} while (0)
-+#endif
-+
-+#define PKTLEN_SHIFT 10
-+
-+static inline void
-+desc_to_ptype_v(vector unsigned long descs[4], struct rte_mbuf **rx_pkts)
-+{
-+ vector unsigned long ptype0 = vec_mergel(descs[0], descs[1]);
-+ vector unsigned long ptype1 = vec_mergel(descs[2], descs[3]);
-+
-+ ptype0 = vec_sr(ptype0, (vector unsigned long){30, 30});
-+ ptype1 = vec_sr(ptype1, (vector unsigned long){30, 30});
-+
-+ rx_pkts[0]->packet_type = i40e_rxd_pkt_type_mapping(
-+ (*(vector unsigned char *)&ptype0)[0]);
-+ rx_pkts[1]->packet_type = i40e_rxd_pkt_type_mapping(
-+ (*(vector unsigned char *)&ptype0)[8]);
-+ rx_pkts[2]->packet_type = i40e_rxd_pkt_type_mapping(
-+ (*(vector unsigned char *)&ptype1)[0]);
-+ rx_pkts[3]->packet_type = i40e_rxd_pkt_type_mapping(
-+ (*(vector unsigned char *)&ptype1)[8]);
-+}
-+
-+ /* Notice:
-+ * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
-+ * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
-+ * numbers of DD bits
-+ */
-+static inline uint16_t
-+_recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
-+ uint16_t nb_pkts, uint8_t *split_packet)
-+{
-+ volatile union i40e_rx_desc *rxdp;
-+ struct i40e_rx_entry *sw_ring;
-+ uint16_t nb_pkts_recd;
-+ int pos;
-+ uint64_t var;
-+ vector unsigned char shuf_msk;
-+
-+ vector unsigned short crc_adjust = (vector unsigned short){
-+ 0, 0, /* ignore pkt_type field */
-+ rxq->crc_len, /* sub crc on pkt_len */
-+ 0, /* ignore high-16bits of pkt_len */
-+ rxq->crc_len, /* sub crc on data_len */
-+ 0, 0, 0 /* ignore non-length fields */
-+ };
-+ vector unsigned long dd_check, eop_check;
-+
-+ /* nb_pkts shall be less equal than RTE_I40E_MAX_RX_BURST */
-+ nb_pkts = RTE_MIN(nb_pkts, RTE_I40E_MAX_RX_BURST);
-+
-+ /* nb_pkts has to be floor-aligned to RTE_I40E_DESCS_PER_LOOP */
-+ nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_I40E_DESCS_PER_LOOP);
-+
-+ /* Just the act of getting into the function from the application is
-+ * going to cost about 7 cycles
-+ */
-+ rxdp = rxq->rx_ring + rxq->rx_tail;
-+
-+ rte_prefetch0(rxdp);
-+
-+ /* See if we need to rearm the RX queue - gives the prefetch a bit
-+ * of time to act
-+ */
-+ if (rxq->rxrearm_nb > RTE_I40E_RXQ_REARM_THRESH)
-+ i40e_rxq_rearm(rxq);
-+
-+ /* Before we start moving massive data around, check to see if
-+ * there is actually a packet available
-+ */
-+ if (!(rxdp->wb.qword1.status_error_len &
-+ rte_cpu_to_le_32(1 << I40E_RX_DESC_STATUS_DD_SHIFT)))
-+ return 0;
-+
-+ /* 4 packets DD mask */
-+ dd_check = (vector unsigned long){0x0000000100000001ULL,
-+ 0x0000000100000001ULL};
-+
-+ /* 4 packets EOP mask */
-+ eop_check = (vector unsigned long){0x0000000200000002ULL,
-+ 0x0000000200000002ULL};
-+
-+ /* mask to shuffle from desc. to mbuf */
-+ shuf_msk = (vector unsigned char){
-+ 0xFF, 0xFF, /* pkt_type set as unknown */
-+ 0xFF, 0xFF, /* pkt_type set as unknown */
-+ 14, 15, /* octet 15~14, low 16 bits pkt_len */
-+ 0xFF, 0xFF, /* skip high 16 bits pkt_len, zero out */
-+ 14, 15, /* octet 15~14, 16 bits data_len */
-+ 2, 3, /* octet 2~3, low 16 bits vlan_macip */
-+ 4, 5, 6, 7 /* octet 4~7, 32bits rss */
-+ };
-+
-+ /* Cache is empty -> need to scan the buffer rings, but first move
-+ * the next 'n' mbufs into the cache
-+ */
-+ sw_ring = &rxq->sw_ring[rxq->rx_tail];
-+
-+ /* A. load 4 packet in one loop
-+ * [A*. mask out 4 unused dirty field in desc]
-+ * B. copy 4 mbuf point from swring to rx_pkts
-+ * C. calc the number of DD bits among the 4 packets
-+ * [C*. extract the end-of-packet bit, if requested]
-+ * D. fill info. from desc to mbuf
-+ */
-+
-+ for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
-+ pos += RTE_I40E_DESCS_PER_LOOP,
-+ rxdp += RTE_I40E_DESCS_PER_LOOP) {
-+ vector unsigned long descs[RTE_I40E_DESCS_PER_LOOP];
-+ vector unsigned char pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
-+ vector unsigned short staterr, sterr_tmp1, sterr_tmp2;
-+ vector unsigned long mbp1, mbp2; /* two mbuf pointer
-+ * in one XMM reg.
-+ */
-+
-+ /* B.1 load 1 mbuf point */
-+ mbp1 = *(vector unsigned long *)&sw_ring[pos];
-+ /* Read desc statuses backwards to avoid race condition */
-+ /* A.1 load 4 pkts desc */
-+ descs[3] = *(vector unsigned long *)(rxdp + 3);
-+ rte_compiler_barrier();
-+
-+ /* B.2 copy 2 mbuf point into rx_pkts */
-+ *(vector unsigned long *)&rx_pkts[pos] = mbp1;
-+
-+ /* B.1 load 1 mbuf point */
-+ mbp2 = *(vector unsigned long *)&sw_ring[pos + 2];
-+
-+ descs[2] = *(vector unsigned long *)(rxdp + 2);
-+ rte_compiler_barrier();
-+ /* B.1 load 2 mbuf point */
-+ descs[1] = *(vector unsigned long *)(rxdp + 1);
-+ rte_compiler_barrier();
-+ descs[0] = *(vector unsigned long *)(rxdp);
-+
-+ /* B.2 copy 2 mbuf point into rx_pkts */
-+ *(vector unsigned long *)&rx_pkts[pos + 2] = mbp2;
-+
-+ if (split_packet) {
-+ rte_mbuf_prefetch_part2(rx_pkts[pos]);
-+ rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
-+ rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
-+ rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
-+ }
-+
-+ /* avoid compiler reorder optimization */
-+ rte_compiler_barrier();
-+
-+ /* pkt 3,4 shift the pktlen field to be 16-bit aligned*/
-+ const vector unsigned int len3 = vec_sl(
-+ vec_ld(0, (vector unsigned int *)&descs[3]),
-+ (vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
-+
-+ const vector unsigned int len2 = vec_sl(
-+ vec_ld(0, (vector unsigned int *)&descs[2]),
-+ (vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
-+
-+ /* merge the now-aligned packet length fields back in */
-+ descs[3] = (vector unsigned long)len3;
-+ descs[2] = (vector unsigned long)len2;
-+
-+ /* D.1 pkt 3,4 convert format from desc to pktmbuf */
-+ pkt_mb4 = vec_perm((vector unsigned char)descs[3],
-+ (vector unsigned char){}, shuf_msk);
-+ pkt_mb3 = vec_perm((vector unsigned char)descs[2],
-+ (vector unsigned char){}, shuf_msk);
-+
-+ /* C.1 4=>2 filter staterr info only */
-+ sterr_tmp2 = vec_mergel((vector unsigned short)descs[3],
-+ (vector unsigned short)descs[2]);
-+ /* C.1 4=>2 filter staterr info only */
-+ sterr_tmp1 = vec_mergel((vector unsigned short)descs[1],
-+ (vector unsigned short)descs[0]);
-+ /* D.2 pkt 3,4 set in_port/nb_seg and remove crc */
-+ pkt_mb4 = (vector unsigned char)vec_sub(
-+ (vector unsigned short)pkt_mb4, crc_adjust);
-+ pkt_mb3 = (vector unsigned char)vec_sub(
-+ (vector unsigned short)pkt_mb3, crc_adjust);
-+
-+ /* pkt 1,2 shift the pktlen field to be 16-bit aligned*/
-+ const vector unsigned int len1 = vec_sl(
-+ vec_ld(0, (vector unsigned int *)&descs[1]),
-+ (vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
-+ const vector unsigned int len0 = vec_sl(
-+ vec_ld(0, (vector unsigned int *)&descs[0]),
-+ (vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
-+
-+ /* merge the now-aligned packet length fields back in */
-+ descs[1] = (vector unsigned long)len1;
-+ descs[0] = (vector unsigned long)len0;
-+
-+ /* D.1 pkt 1,2 convert format from desc to pktmbuf */
-+ pkt_mb2 = vec_perm((vector unsigned char)descs[1],
-+ (vector unsigned char){}, shuf_msk);
-+ pkt_mb1 = vec_perm((vector unsigned char)descs[0],
-+ (vector unsigned char){}, shuf_msk);
-+
-+ /* C.2 get 4 pkts staterr value */
-+ staterr = (vector unsigned short)vec_mergeh(
-+ sterr_tmp1, sterr_tmp2);
-+
-+ /* D.3 copy final 3,4 data to rx_pkts */
-+ vec_st(pkt_mb4, 0,
-+ (vector unsigned char *)&rx_pkts[pos + 3]
-+ ->rx_descriptor_fields1
-+ );
-+ vec_st(pkt_mb3, 0,
-+ (vector unsigned char *)&rx_pkts[pos + 2]
-+ ->rx_descriptor_fields1
-+ );
-+
-+ /* D.2 pkt 1,2 set in_port/nb_seg and remove crc */
-+ pkt_mb2 = (vector unsigned char)vec_sub(
-+ (vector unsigned short)pkt_mb2, crc_adjust);
-+ pkt_mb1 = (vector unsigned char)vec_sub(
-+ (vector unsigned short)pkt_mb1, crc_adjust);
-+
-+ /* C* extract and record EOP bit */
-+ if (split_packet) {
-+ vector unsigned char eop_shuf_mask =
-+ (vector unsigned char){
-+ 0xFF, 0xFF, 0xFF, 0xFF,
-+ 0xFF, 0xFF, 0xFF, 0xFF,
-+ 0xFF, 0xFF, 0xFF, 0xFF,
-+ 0x04, 0x0C, 0x00, 0x08
-+ };
-+
-+ /* and with mask to extract bits, flipping 1-0 */
-+ vector unsigned char eop_bits = vec_and(
-+ (vector unsigned char)vec_nor(staterr, staterr),
-+ (vector unsigned char)eop_check);
-+ /* the staterr values are not in order, as the count
-+ * count of dd bits doesn't care. However, for end of
-+ * packet tracking, we do care, so shuffle. This also
-+ * compresses the 32-bit values to 8-bit
-+ */
-+ eop_bits = vec_perm(eop_bits, (vector unsigned char){},
-+ eop_shuf_mask);
-+ /* store the resulting 32-bit value */
-+ *split_packet = (vec_ld(0,
-+ (vector unsigned int *)&eop_bits))[0];
-+ split_packet += RTE_I40E_DESCS_PER_LOOP;
-+
-+ /* zero-out next pointers */
-+ rx_pkts[pos]->next = NULL;
-+ rx_pkts[pos + 1]->next = NULL;
-+ rx_pkts[pos + 2]->next = NULL;
-+ rx_pkts[pos + 3]->next = NULL;
-+ }
-+
-+ /* C.3 calc available number of desc */
-+ staterr = vec_and(staterr, (vector unsigned short)dd_check);
-+
-+ /* D.3 copy final 1,2 data to rx_pkts */
-+ vec_st(pkt_mb2, 0,
-+ (vector unsigned char *)&rx_pkts[pos + 1]
-+ ->rx_descriptor_fields1
-+ );
-+ vec_st(pkt_mb1, 0,
-+ (vector unsigned char *)&rx_pkts[pos]->rx_descriptor_fields1
-+ );
-+ desc_to_ptype_v(descs, &rx_pkts[pos]);
-+ desc_to_olflags_v(descs, &rx_pkts[pos]);
-+
-+ /* C.4 calc avaialbe number of desc */
-+ var = __builtin_popcountll((vec_ld(0,
-+ (vector unsigned long *)&staterr)[0]));
-+ nb_pkts_recd += var;
-+ if (likely(var != RTE_I40E_DESCS_PER_LOOP))
-+ break;
-+ }
-+
-+ /* Update our internal tail pointer */
-+ rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_pkts_recd);
-+ rxq->rx_tail = (uint16_t)(rxq->rx_tail & (rxq->nb_rx_desc - 1));
-+ rxq->rxrearm_nb = (uint16_t)(rxq->rxrearm_nb + nb_pkts_recd);
-+
-+ return nb_pkts_recd;
-+}
-+
-+ /* Notice:
-+ * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
-+ * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
-+ * numbers of DD bits
-+ */
-+uint16_t
-+i40e_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
-+ uint16_t nb_pkts)
-+{
-+ return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
-+}
-+
-+ /* vPMD receive routine that reassembles scattered packets
-+ * Notice:
-+ * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
-+ * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
-+ * numbers of DD bits
-+ */
-+uint16_t
-+i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
-+ uint16_t nb_pkts)
-+{
-+ struct i40e_rx_queue *rxq = rx_queue;
-+ uint8_t split_flags[RTE_I40E_VPMD_RX_BURST] = {0};
-+
-+ /* get some new buffers */
-+ uint16_t nb_bufs = _recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
-+ split_flags);
-+ if (nb_bufs == 0)
-+ return 0;
-+
-+ /* happy day case, full burst + no packets to be joined */
-+ const uint64_t *split_fl64 = (uint64_t *)split_flags;
-+
-+ if (rxq->pkt_first_seg == NULL &&
-+ split_fl64[0] == 0 && split_fl64[1] == 0 &&
-+ split_fl64[2] == 0 && split_fl64[3] == 0)
-+ return nb_bufs;
-+
-+ /* reassemble any packets that need reassembly*/
-+ unsigned int i = 0;
-+
-+ if (!rxq->pkt_first_seg) {
-+ /* find the first split flag, and only reassemble then*/
-+ while (i < nb_bufs && !split_flags[i])
-+ i++;
-+ if (i == nb_bufs)
-+ return nb_bufs;
-+ }
-+ return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
-+ &split_flags[i]);
-+}
-+
-+static inline void
-+vtx1(volatile struct i40e_tx_desc *txdp,
-+ struct rte_mbuf *pkt, uint64_t flags)
-+{
-+ uint64_t high_qw = (I40E_TX_DESC_DTYPE_DATA |
-+ ((uint64_t)flags << I40E_TXD_QW1_CMD_SHIFT) |
-+ ((uint64_t)pkt->data_len << I40E_TXD_QW1_TX_BUF_SZ_SHIFT));
-+
-+ vector unsigned long descriptor = (vector unsigned long){
-+ pkt->buf_physaddr + pkt->data_off, high_qw};
-+ *(vector unsigned long *)txdp = descriptor;
-+}
-+
-+static inline void
-+vtx(volatile struct i40e_tx_desc *txdp,
-+ struct rte_mbuf **pkt, uint16_t nb_pkts, uint64_t flags)
-+{
-+ int i;
-+
-+ for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
-+ vtx1(txdp, *pkt, flags);
-+}
-+
-+uint16_t
-+i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
-+ uint16_t nb_pkts)
-+{
-+ struct i40e_tx_queue *txq = (struct i40e_tx_queue *)tx_queue;
-+ volatile struct i40e_tx_desc *txdp;
-+ struct i40e_tx_entry *txep;
-+ uint16_t n, nb_commit, tx_id;
-+ uint64_t flags = I40E_TD_CMD;
-+ uint64_t rs = I40E_TX_DESC_CMD_RS | I40E_TD_CMD;
-+ int i;
-+
-+ /* cross rx_thresh boundary is not allowed */
-+ nb_pkts = RTE_MIN(nb_pkts, txq->tx_rs_thresh);
-+
-+ if (txq->nb_tx_free < txq->tx_free_thresh)
-+ i40e_tx_free_bufs(txq);
-+
-+ nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
-+ nb_commit = nb_pkts;
-+ if (unlikely(nb_pkts == 0))
-+ return 0;
-+
-+ tx_id = txq->tx_tail;
-+ txdp = &txq->tx_ring[tx_id];
-+ txep = &txq->sw_ring[tx_id];
-+
-+ txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
-+
-+ n = (uint16_t)(txq->nb_tx_desc - tx_id);
-+ if (nb_commit >= n) {
-+ tx_backlog_entry(txep, tx_pkts, n);
-+
-+ for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
-+ vtx1(txdp, *tx_pkts, flags);
-+
-+ vtx1(txdp, *tx_pkts++, rs);
-+
-+ nb_commit = (uint16_t)(nb_commit - n);
-+
-+ tx_id = 0;
-+ txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
-+
-+ /* avoid reach the end of ring */
-+ txdp = &txq->tx_ring[tx_id];
-+ txep = &txq->sw_ring[tx_id];
-+ }
-+
-+ tx_backlog_entry(txep, tx_pkts, nb_commit);
-+
-+ vtx(txdp, tx_pkts, nb_commit, flags);
-+
-+ tx_id = (uint16_t)(tx_id + nb_commit);
-+ if (tx_id > txq->tx_next_rs) {
-+ txq->tx_ring[txq->tx_next_rs].cmd_type_offset_bsz |=
-+ rte_cpu_to_le_64(((uint64_t)I40E_TX_DESC_CMD_RS) <<
-+ I40E_TXD_QW1_CMD_SHIFT);
-+ txq->tx_next_rs =
-+ (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh);
-+ }
-+
-+ txq->tx_tail = tx_id;
-+
-+ I40E_PCI_REG_WRITE(txq->qtx_tail, txq->tx_tail);
-+
-+ return nb_pkts;
-+}
-+
-+void __attribute__((cold))
-+i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue *rxq)
-+{
-+ _i40e_rx_queue_release_mbufs_vec(rxq);
-+}
-+
-+int __attribute__((cold))
-+i40e_rxq_vec_setup(struct i40e_rx_queue *rxq)
-+{
-+ return i40e_rxq_vec_setup_default(rxq);
-+}
-+
-+int __attribute__((cold))
-+i40e_txq_vec_setup(struct i40e_tx_queue __rte_unused * txq)
-+{
-+ return 0;
-+}
-+
-+int __attribute__((cold))
-+i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev)
-+{
-+ return i40e_rx_vec_dev_conf_condition_check_default(dev);
-+}
Code Review / deb_dpdk.git / blobdiff