From patchwork Thu Jun 8 02:20:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13271526 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9A681ED0 for ; Thu, 8 Jun 2023 02:20:18 +0000 (UTC) Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 20A441984; Wed, 7 Jun 2023 19:20:17 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.00,225,1681138800"; d="scan'208";a="162646235" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 08 Jun 2023 11:20:16 +0900 Received: from localhost.localdomain (unknown [10.166.15.32]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 54DDE41240AA; Thu, 8 Jun 2023 11:20:16 +0900 (JST) From: Yoshihiro Shimoda To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: maciej.fijalkowski@intel.com, simon.horman@corigine.com, netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH net-next v4 1/2] net: renesas: rswitch: Use napi_gro_receive() in RX Date: Thu, 8 Jun 2023 11:20:06 +0900 Message-Id: <20230608022007.1866372-2-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230608022007.1866372-1-yoshihiro.shimoda.uh@renesas.com> References: <20230608022007.1866372-1-yoshihiro.shimoda.uh@renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org This hardware can receive multiple frames so that using napi_gro_receive() instead of netif_receive_skb() gets good performance of RX. Signed-off-by: Yoshihiro Shimoda Reviewed-by: Maciej Fijalkowski --- drivers/net/ethernet/renesas/rswitch.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index aace87139cea..7bb0a6d594a0 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -729,7 +729,7 @@ static bool rswitch_rx(struct net_device *ndev, int *quota) } skb_put(skb, pkt_len); skb->protocol = eth_type_trans(skb, ndev); - netif_receive_skb(skb); + napi_gro_receive(&rdev->napi, skb); rdev->ndev->stats.rx_packets++; rdev->ndev->stats.rx_bytes += pkt_len; From patchwork Thu Jun 8 02:20:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13271528 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0CA62137F for ; Thu, 8 Jun 2023 02:20:22 +0000 (UTC) Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 832092115; Wed, 7 Jun 2023 19:20:18 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.00,225,1681138800"; d="scan'208";a="166184492" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 08 Jun 2023 11:20:16 +0900 Received: from localhost.localdomain (unknown [10.166.15.32]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 7708441240AA; Thu, 8 Jun 2023 11:20:16 +0900 (JST) From: Yoshihiro Shimoda To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: maciej.fijalkowski@intel.com, simon.horman@corigine.com, netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH net-next v4 2/2] net: renesas: rswitch: Use hardware pause features Date: Thu, 8 Jun 2023 11:20:07 +0900 Message-Id: <20230608022007.1866372-3-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230608022007.1866372-1-yoshihiro.shimoda.uh@renesas.com> References: <20230608022007.1866372-1-yoshihiro.shimoda.uh@renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org Since this driver used the "global rate limiter" feature of GWCA, the TX performance of each port was reduced when multiple ports transmitted frames simultaneously. To improve performance, remove the use of the "global rate limiter" feature and use "hardware pause" features of the following: - "per priority pause" of GWCA - "global pause" of COMA Note that these features are not related to the ethernet PAUSE frame. Signed-off-by: Yoshihiro Shimoda Reviewed-by: Maciej Fijalkowski --- drivers/net/ethernet/renesas/rswitch.c | 36 ++++++++++---------------- drivers/net/ethernet/renesas/rswitch.h | 7 +++++ 2 files changed, 21 insertions(+), 22 deletions(-) diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index 7bb0a6d594a0..84f62c77eb8f 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -90,6 +90,11 @@ static int rswitch_bpool_config(struct rswitch_private *priv) return rswitch_reg_wait(priv->addr, CABPIRM, CABPIRM_BPR, CABPIRM_BPR); } +static void rswitch_coma_init(struct rswitch_private *priv) +{ + iowrite32(CABPPFLC_INIT_VALUE, priv->addr + CABPPFLC0); +} + /* R-Switch-2 block (TOP) */ static void rswitch_top_init(struct rswitch_private *priv) { @@ -156,24 +161,6 @@ static int rswitch_gwca_axi_ram_reset(struct rswitch_private *priv) return rswitch_reg_wait(priv->addr, GWARIRM, GWARIRM_ARR, GWARIRM_ARR); } -static void rswitch_gwca_set_rate_limit(struct rswitch_private *priv, int rate) -{ - u32 gwgrlulc, gwgrlc; - - switch (rate) { - case 1000: - gwgrlulc = 0x0000005f; - gwgrlc = 0x00010260; - break; - default: - dev_err(&priv->pdev->dev, "%s: This rate is not supported (%d)\n", __func__, rate); - return; - } - - iowrite32(gwgrlulc, priv->addr + GWGRLULC); - iowrite32(gwgrlc, priv->addr + GWGRLC); -} - static bool rswitch_is_any_data_irq(struct rswitch_private *priv, u32 *dis, bool tx) { u32 *mask = tx ? priv->gwca.tx_irq_bits : priv->gwca.rx_irq_bits; @@ -402,7 +389,7 @@ static int rswitch_gwca_queue_format(struct net_device *ndev, linkfix->die_dt = DT_LINKFIX; rswitch_desc_set_dptr(linkfix, gq->ring_dma); - iowrite32(GWDCC_BALR | (gq->dir_tx ? GWDCC_DQT : 0) | GWDCC_EDE, + iowrite32(GWDCC_BALR | (gq->dir_tx ? GWDCC_DCP(GWCA_IPV_NUM) | GWDCC_DQT : 0) | GWDCC_EDE, priv->addr + GWDCC_OFFS(gq->index)); return 0; @@ -500,7 +487,8 @@ static int rswitch_gwca_queue_ext_ts_format(struct net_device *ndev, linkfix->die_dt = DT_LINKFIX; rswitch_desc_set_dptr(linkfix, gq->ring_dma); - iowrite32(GWDCC_BALR | (gq->dir_tx ? GWDCC_DQT : 0) | GWDCC_ETS | GWDCC_EDE, + iowrite32(GWDCC_BALR | (gq->dir_tx ? GWDCC_DCP(GWCA_IPV_NUM) | GWDCC_DQT : 0) | + GWDCC_ETS | GWDCC_EDE, priv->addr + GWDCC_OFFS(gq->index)); return 0; @@ -649,7 +637,8 @@ static int rswitch_gwca_hw_init(struct rswitch_private *priv) iowrite32(lower_32_bits(priv->gwca.ts_queue.ring_dma), priv->addr + GWTDCAC10); iowrite32(upper_32_bits(priv->gwca.ts_queue.ring_dma), priv->addr + GWTDCAC00); iowrite32(GWCA_TS_IRQ_BIT, priv->addr + GWTSDCC0); - rswitch_gwca_set_rate_limit(priv, priv->gwca.speed); + + iowrite32(GWTPC_PPPL(GWCA_IPV_NUM), priv->addr + GWTPC0); for (i = 0; i < RSWITCH_NUM_PORTS; i++) { err = rswitch_rxdmac_init(priv, i); @@ -1502,7 +1491,8 @@ static netdev_tx_t rswitch_start_xmit(struct sk_buff *skb, struct net_device *nd rswitch_desc_set_dptr(&desc->desc, dma_addr); desc->desc.info_ds = cpu_to_le16(skb->len); - desc->info1 = cpu_to_le64(INFO1_DV(BIT(rdev->etha->index)) | INFO1_FMT); + desc->info1 = cpu_to_le64(INFO1_DV(BIT(rdev->etha->index)) | + INFO1_IPV(GWCA_IPV_NUM) | INFO1_FMT); if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) { struct rswitch_gwca_ts_info *ts_info; @@ -1772,6 +1762,8 @@ static int rswitch_init(struct rswitch_private *priv) if (err < 0) return err; + rswitch_coma_init(priv); + err = rswitch_gwca_linkfix_alloc(priv); if (err < 0) return -ENOMEM; diff --git a/drivers/net/ethernet/renesas/rswitch.h b/drivers/net/ethernet/renesas/rswitch.h index b3e0411b408e..bb9ed971a97c 100644 --- a/drivers/net/ethernet/renesas/rswitch.h +++ b/drivers/net/ethernet/renesas/rswitch.h @@ -48,6 +48,7 @@ #define GWCA_NUM_IRQS 8 #define GWCA_INDEX 0 #define AGENT_INDEX_GWCA 3 +#define GWCA_IPV_NUM 0 #define GWRO RSWITCH_GWCA0_OFFSET #define GWCA_TS_IRQ_RESOURCE_NAME "gwca0_rxts0" @@ -768,11 +769,14 @@ enum rswitch_gwca_mode { #define GWARIRM_ARR BIT(1) #define GWDCC_BALR BIT(24) +#define GWDCC_DCP_MASK GENMASK(18, 16) +#define GWDCC_DCP(prio) FIELD_PREP(GWDCC_DCP_MASK, (prio)) #define GWDCC_DQT BIT(11) #define GWDCC_ETS BIT(9) #define GWDCC_EDE BIT(8) #define GWTRC(queue) (GWTRC0 + (queue) / 32 * 4) +#define GWTPC_PPPL(ipv) BIT(ipv) #define GWDCC_OFFS(queue) (GWDCC0 + (queue) * 4) #define GWDIS(i) (GWDIS0 + (i) * 0x10) @@ -789,6 +793,8 @@ enum rswitch_gwca_mode { #define CABPIRM_BPIOG BIT(0) #define CABPIRM_BPR BIT(1) +#define CABPPFLC_INIT_VALUE 0x00800080 + /* MFWD */ #define FWPC0_LTHTA BIT(0) #define FWPC0_IP4UE BIT(3) @@ -863,6 +869,7 @@ enum DIE_DT { /* For transmission */ #define INFO1_TSUN(val) ((u64)(val) << 8ULL) +#define INFO1_IPV(prio) ((u64)(prio) << 28ULL) #define INFO1_CSD0(index) ((u64)(index) << 32ULL) #define INFO1_CSD1(index) ((u64)(index) << 40ULL) #define INFO1_DV(port_vector) ((u64)(port_vector) << 48ULL)