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From: Radu Nicolau <radu.nicolau@intel.com>
To: dev@dpdk.org
Cc: beilei.xing@intel.com, jia.guo@intel.com,
	bruce.richardson@intel.com, konstantin.ananyev@intel.com,
	jerinjacobk@gmail.com, david.marchand@redhat.com,
	fiona.trahe@intel.com, wei.zhao1@intel.com, ruifeng.wang@arm.com,
	qiming.yang@intel.com, qi.z.zhang@intel.com,
	Radu Nicolau <radu.nicolau@intel.com>
Subject: [dpdk-dev] [PATCH v11 4/5] net/ixgbe: use WC store to update queue tail registers
Date: Wed, 26 Aug 2020 10:55:51 +0100
Message-ID: <20200826095552.82525-5-radu.nicolau@intel.com> (raw)
In-Reply-To: <20200826095552.82525-1-radu.nicolau@intel.com>

Performance improvement: use a write combining store
instead of a regular mmio write to update queue tail
registers.

Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
---
 drivers/net/ixgbe/base/ixgbe_osdep.h   |  6 ++++++
 drivers/net/ixgbe/ixgbe_rxtx.c         | 15 ++++++++-------
 drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c |  4 ++--
 3 files changed, 16 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ixgbe/base/ixgbe_osdep.h b/drivers/net/ixgbe/base/ixgbe_osdep.h
index dc712b7c0..cacf72419 100644
--- a/drivers/net/ixgbe/base/ixgbe_osdep.h
+++ b/drivers/net/ixgbe/base/ixgbe_osdep.h
@@ -105,6 +105,12 @@ static inline uint32_t ixgbe_read_addr(volatile void* addr)
 #define IXGBE_PCI_REG_WRITE_RELAXED(reg, value)		\
 	rte_write32_relaxed((rte_cpu_to_le_32(value)), reg)
 
+#define IXGBE_PCI_REG_WC_WRITE(reg, value)			\
+	rte_write32_wc((rte_cpu_to_le_32(value)), reg)
+
+#define IXGBE_PCI_REG_WC_WRITE_RELAXED(reg, value)		\
+	rte_write32_wc_relaxed((rte_cpu_to_le_32(value)), reg)
+
 #define IXGBE_PCI_REG_ADDR(hw, reg) \
 	((volatile uint32_t *)((char *)(hw)->hw_addr + (reg)))
 
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 977ecf513..29d385c06 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -308,7 +308,7 @@ tx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 
 	/* update tail pointer */
 	rte_wmb();
-	IXGBE_PCI_REG_WRITE_RELAXED(txq->tdt_reg_addr, txq->tx_tail);
+	IXGBE_PCI_REG_WC_WRITE_RELAXED(txq->tdt_reg_addr, txq->tx_tail);
 
 	return nb_pkts;
 }
@@ -946,7 +946,7 @@ ixgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 	PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_tx=%u",
 		   (unsigned) txq->port_id, (unsigned) txq->queue_id,
 		   (unsigned) tx_id, (unsigned) nb_tx);
-	IXGBE_PCI_REG_WRITE_RELAXED(txq->tdt_reg_addr, tx_id);
+	IXGBE_PCI_REG_WC_WRITE_RELAXED(txq->tdt_reg_addr, tx_id);
 	txq->tx_tail = tx_id;
 
 	return nb_tx;
@@ -1692,7 +1692,7 @@ rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 
 		/* update tail pointer */
 		rte_wmb();
-		IXGBE_PCI_REG_WRITE_RELAXED(rxq->rdt_reg_addr,
+		IXGBE_PCI_REG_WC_WRITE_RELAXED(rxq->rdt_reg_addr,
 					    cur_free_trigger);
 	}
 
@@ -1918,7 +1918,7 @@ ixgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 			   (unsigned) nb_rx);
 		rx_id = (uint16_t) ((rx_id == 0) ?
 				     (rxq->nb_rx_desc - 1) : (rx_id - 1));
-		IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rx_id);
+		IXGBE_PCI_REG_WC_WRITE(rxq->rdt_reg_addr, rx_id);
 		nb_hold = 0;
 	}
 	rxq->nb_rx_hold = nb_hold;
@@ -2096,8 +2096,9 @@ ixgbe_recv_pkts_lro(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts,
 
 			if (!ixgbe_rx_alloc_bufs(rxq, false)) {
 				rte_wmb();
-				IXGBE_PCI_REG_WRITE_RELAXED(rxq->rdt_reg_addr,
-							    next_rdt);
+				IXGBE_PCI_REG_WC_WRITE_RELAXED(
+							rxq->rdt_reg_addr,
+							next_rdt);
 				nb_hold -= rxq->rx_free_thresh;
 			} else {
 				PMD_RX_LOG(DEBUG, "RX bulk alloc failed "
@@ -2262,7 +2263,7 @@ ixgbe_recv_pkts_lro(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts,
 			   rxq->port_id, rxq->queue_id, rx_id, nb_hold, nb_rx);
 
 		rte_wmb();
-		IXGBE_PCI_REG_WRITE_RELAXED(rxq->rdt_reg_addr, prev_id);
+		IXGBE_PCI_REG_WC_WRITE_RELAXED(rxq->rdt_reg_addr, prev_id);
 		nb_hold = 0;
 	}
 
diff --git a/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c b/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c
index 517ca3166..e77a7f31c 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c
@@ -90,7 +90,7 @@ ixgbe_rxq_rearm(struct ixgbe_rx_queue *rxq)
 			     (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
 
 	/* Update the tail pointer on the NIC */
-	IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rx_id);
+	IXGBE_PCI_REG_WC_WRITE(rxq->rdt_reg_addr, rx_id);
 }
 
 #ifdef RTE_LIBRTE_SECURITY
@@ -697,7 +697,7 @@ ixgbe_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
 
 	txq->tx_tail = tx_id;
 
-	IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, txq->tx_tail);
+	IXGBE_PCI_REG_WC_WRITE(txq->tdt_reg_addr, txq->tx_tail);
 
 	return nb_pkts;
 }
-- 
2.17.1


  parent reply	other threads:[~2020-08-26  9:56 UTC|newest]

Thread overview: 76+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-11 10:11 [dpdk-dev] [PATCH v1 1/2] eal/x86: add WC store function Radu Nicolau
2020-06-11 10:11 ` [dpdk-dev] [PATCH v1 2/2] net/i40e: use movdiri to update queue tail registers Radu Nicolau
2020-06-11 12:23 ` [dpdk-dev] [PATCH v1 1/2] eal/x86: add WC store function Jerin Jacob
2020-06-11 13:56   ` Nicolau, Radu
2020-06-11 15:33     ` Jerin Jacob
2020-06-15 11:11 ` Ananyev, Konstantin
2020-06-19 12:06 ` [dpdk-dev] [PATCH v2 1/2] eal: add WC store functions Radu Nicolau
2020-06-19 12:06   ` [dpdk-dev] [PATCH v2 2/2] net/i40e: use WC store to update queue tail registers Radu Nicolau
2020-07-01 13:15     ` Bruce Richardson
2020-07-01 13:14   ` [dpdk-dev] [PATCH v2 1/2] eal: add WC store functions Bruce Richardson
2020-07-01 14:15 ` [dpdk-dev] [PATCH v3 0/2] " Radu Nicolau
2020-07-01 14:15   ` [dpdk-dev] [PATCH v3 1/2] " Radu Nicolau
2020-07-01 14:15   ` [dpdk-dev] [PATCH v3 2/2] net/i40e: use WC store to update queue tail registers Radu Nicolau
2020-07-02  9:23 ` [dpdk-dev] [PATCH v4 0/2] eal: add WC store functions Radu Nicolau
2020-07-02  9:23   ` [dpdk-dev] [PATCH v4 1/2] " Radu Nicolau
2020-07-03 15:19     ` David Marchand
2020-07-06  9:15       ` Nicolau, Radu
2020-07-02  9:23   ` [dpdk-dev] [PATCH v4 2/2] net/i40e: use WC store to update queue tail registers Radu Nicolau
2020-07-06 12:29 ` [dpdk-dev] [PATCH v5 0/2] eal: add WC store functions Radu Nicolau
2020-07-06 12:29   ` [dpdk-dev] [PATCH v5 1/2] " Radu Nicolau
2020-07-06 12:30   ` [dpdk-dev] [PATCH v5 2/2] net/i40e: use WC store to update queue tail registers Radu Nicolau
2020-07-13 12:27 ` [dpdk-dev] [PATCH v6 0/4] eal: add WC store functions Radu Nicolau
2020-07-13 12:27   ` [dpdk-dev] [PATCH v6 1/4] " Radu Nicolau
2020-07-13 12:27   ` [dpdk-dev] [PATCH v6 2/4] net/i40e: use WC store to update queue tail registers Radu Nicolau
2020-07-13 12:27   ` [dpdk-dev] [PATCH v6 3/4] qat: " Radu Nicolau
2020-07-13 12:44     ` Bruce Richardson
2020-07-13 12:52       ` Trahe, Fiona
2020-07-13 12:57         ` Bruce Richardson
2020-07-13 12:27   ` [dpdk-dev] [PATCH v6 4/4] net/ixgbe: use WC store to update doorbell register Radu Nicolau
2020-07-16 12:29 ` [dpdk-dev] [PATCH v7 0/4] eal: add WC store functions Radu Nicolau
2020-07-16 12:29   ` [dpdk-dev] [PATCH v7 1/4] " Radu Nicolau
2020-07-16 12:29   ` [dpdk-dev] [PATCH v7 2/4] net/i40e: use WC store to update queue tail registers Radu Nicolau
2020-07-16 12:29   ` [dpdk-dev] [PATCH v7 3/4] common/qat: " Radu Nicolau
2020-07-16 12:29   ` [dpdk-dev] [PATCH v7 4/4] net/ixgbe: use WC store to update doorbell register Radu Nicolau
2020-07-17 10:49 ` [dpdk-dev] [PATCH v8 0/4] eal: add WC store functions Radu Nicolau
2020-07-17 10:49   ` [dpdk-dev] [PATCH v8 1/4] " Radu Nicolau
2020-07-20  6:42     ` Ruifeng Wang
2020-07-20  8:52       ` Nicolau, Radu
2020-07-17 10:49   ` [dpdk-dev] [PATCH v8 2/4] net/i40e: use WC store to update queue tail registers Radu Nicolau
2020-07-20  6:46     ` Ruifeng Wang
2020-07-20  8:54       ` Nicolau, Radu
2020-07-17 10:49   ` [dpdk-dev] [PATCH v8 3/4] common/qat: " Radu Nicolau
2020-07-17 16:42     ` Trahe, Fiona
2020-07-17 10:49   ` [dpdk-dev] [PATCH v8 4/4] net/ixgbe: " Radu Nicolau
2020-07-17 11:18     ` Ananyev, Konstantin
2020-07-20  9:12 ` [dpdk-dev] [PATCH v9 0/4] eal: add WC store functions Radu Nicolau
2020-07-20  9:12   ` [dpdk-dev] [PATCH v9 1/4] " Radu Nicolau
2020-07-20 12:20     ` David Marchand
2020-07-21  8:56       ` Nicolau, Radu
2020-07-20  9:12   ` [dpdk-dev] [PATCH v9 2/4] net/i40e: use WC store to update queue tail registers Radu Nicolau
2020-07-20  9:12   ` [dpdk-dev] [PATCH v9 3/4] common/qat: " Radu Nicolau
2020-07-20  9:12   ` [dpdk-dev] [PATCH v9 4/4] net/ixgbe: " Radu Nicolau
2020-07-21 11:31 ` [dpdk-dev] [PATCH v10 0/4] eal: add WC store functions Radu Nicolau
2020-07-21 11:31   ` [dpdk-dev] [PATCH v10 1/4] " Radu Nicolau
2020-07-21 11:31   ` [dpdk-dev] [PATCH v10 2/4] net/i40e: use WC store to update queue tail registers Radu Nicolau
2020-07-21 11:31   ` [dpdk-dev] [PATCH v10 3/4] common/qat: " Radu Nicolau
2020-07-21 11:31   ` [dpdk-dev] [PATCH v10 4/4] net/ixgbe: " Radu Nicolau
2020-08-26  9:55 ` [dpdk-dev] [PATCH v11 0/5] eal: add WC store functions Radu Nicolau
2020-08-26  9:55   ` [dpdk-dev] [PATCH v11 1/5] " Radu Nicolau
2020-08-26  9:55   ` [dpdk-dev] [PATCH v11 2/5] net/i40e: use WC store to update queue tail registers Radu Nicolau
2020-09-23  1:19     ` Lu, Wenzhuo
2020-08-26  9:55   ` [dpdk-dev] [PATCH v11 3/5] common/qat: " Radu Nicolau
2020-08-26  9:55   ` Radu Nicolau [this message]
2020-09-23  1:20     ` [dpdk-dev] [PATCH v11 4/5] net/ixgbe: " Lu, Wenzhuo
2020-08-26  9:55   ` [dpdk-dev] [PATCH v11 5/5] net/ice: " Radu Nicolau
2020-09-23  1:20     ` Lu, Wenzhuo
2020-09-23 14:22 ` [dpdk-dev] [PATCH v12 0/5] eal: add WC store functions Radu Nicolau
2020-09-23 14:22   ` [dpdk-dev] [PATCH v12 1/5] " Radu Nicolau
2020-09-23 14:22   ` [dpdk-dev] [PATCH v12 2/5] net/i40e: use WC store to update queue tail registers Radu Nicolau
2020-09-23 14:22   ` [dpdk-dev] [PATCH v12 3/5] common/qat: " Radu Nicolau
2020-09-23 14:22   ` [dpdk-dev] [PATCH v12 4/5] net/ixgbe: " Radu Nicolau
2020-09-23 14:22   ` [dpdk-dev] [PATCH v12 5/5] net/ice: " Radu Nicolau
2020-10-08  7:28   ` [dpdk-dev] [PATCH v12 0/5] eal: add WC store functions David Marchand
2020-10-08  9:51     ` Nicolau, Radu
2020-10-13  8:57     ` Ferruh Yigit
2020-10-13 12:50   ` David Marchand

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