From patchwork Mon May 29 08:08:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13258291 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 880744422 for ; Mon, 29 May 2023 08:08:52 +0000 (UTC) Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 3B5ADBB; Mon, 29 May 2023 01:08:50 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.00,200,1681138800"; d="scan'208";a="161242008" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 29 May 2023 17:08:49 +0900 Received: from localhost.localdomain (unknown [10.166.15.32]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 8E52C400C741; Mon, 29 May 2023 17:08:49 +0900 (JST) From: Yoshihiro Shimoda To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, geert+renesas@glider.be, magnus.damm@gmail.com Cc: netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH net-next 1/5] dt-bindings: net: r8a779f0-ether-switch: Add ACLK Date: Mon, 29 May 2023 17:08:36 +0900 Message-Id: <20230529080840.1156458-2-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230529080840.1156458-1-yoshihiro.shimoda.uh@renesas.com> References: <20230529080840.1156458-1-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 Add ACLK of GWCA which needs to calculate registers' values for rate limiter feature. Signed-off-by: Yoshihiro Shimoda --- .../bindings/net/renesas,r8a779f0-ether-switch.yaml | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/net/renesas,r8a779f0-ether-switch.yaml b/Documentation/devicetree/bindings/net/renesas,r8a779f0-ether-switch.yaml index e933a1e48d67..cbe05fdcadaf 100644 --- a/Documentation/devicetree/bindings/net/renesas,r8a779f0-ether-switch.yaml +++ b/Documentation/devicetree/bindings/net/renesas,r8a779f0-ether-switch.yaml @@ -75,7 +75,12 @@ properties: - const: rmac2_phy clocks: - maxItems: 1 + maxItems: 2 + + clock-names: + items: + - const: fck + - const: aclk resets: maxItems: 1 @@ -221,7 +226,8 @@ examples: "rmac2_mdio", "rmac0_phy", "rmac1_phy", "rmac2_phy"; - clocks = <&cpg CPG_MOD 1505>; + clocks = <&cpg CPG_MOD 1505>, <&cpg CPG_CORE R8A779F0_CLK_S0D2_HSC>; + clock-names = "fck", "aclk"; power-domains = <&sysc R8A779F0_PD_ALWAYS_ON>; resets = <&cpg 1505>; From patchwork Mon May 29 08:08:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13258294 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 26DF8613E for ; Mon, 29 May 2023 08:08:54 +0000 (UTC) Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 59E2DAC; Mon, 29 May 2023 01:08:52 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.00,200,1681138800"; d="scan'208";a="161242012" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 29 May 2023 17:08:49 +0900 Received: from localhost.localdomain (unknown [10.166.15.32]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id B69F6400C744; Mon, 29 May 2023 17:08:49 +0900 (JST) From: Yoshihiro Shimoda To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, geert+renesas@glider.be, magnus.damm@gmail.com Cc: netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH net-next 2/5] net: renesas: rswitch: Rename GWCA related definitions Date: Mon, 29 May 2023 17:08:37 +0900 Message-Id: <20230529080840.1156458-3-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230529080840.1156458-1-yoshihiro.shimoda.uh@renesas.com> References: <20230529080840.1156458-1-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 Rename GWCA related definitions to improve readability. Signed-off-by: Yoshihiro Shimoda --- drivers/net/ethernet/renesas/rswitch.c | 10 +++++----- drivers/net/ethernet/renesas/rswitch.h | 12 ++++++------ 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index 29afaddb598d..51df96de6fd5 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -95,7 +95,7 @@ static void rswitch_top_init(struct rswitch_private *priv) { int i; - for (i = 0; i < RSWITCH_MAX_NUM_QUEUES; i++) + for (i = 0; i < GWCA_AXI_CHAIN_N; i++) iowrite32((i / 16) << (GWCA_INDEX * 8), priv->addr + TPEMIMC7(i)); } @@ -179,7 +179,7 @@ static bool rswitch_is_any_data_irq(struct rswitch_private *priv, u32 *dis, bool u32 *mask = tx ? priv->gwca.tx_irq_bits : priv->gwca.rx_irq_bits; int i; - for (i = 0; i < RSWITCH_NUM_IRQ_REGS; i++) { + for (i = 0; i < GWCA_NUM_IRQ_REGS; i++) { if (dis[i] & mask[i]) return true; } @@ -191,7 +191,7 @@ static void rswitch_get_data_irq_status(struct rswitch_private *priv, u32 *dis) { int i; - for (i = 0; i < RSWITCH_NUM_IRQ_REGS; i++) { + for (i = 0; i < GWCA_NUM_IRQ_REGS; i++) { dis[i] = ioread32(priv->addr + GWDIS(i)); dis[i] &= ioread32(priv->addr + GWDIE(i)); } @@ -863,7 +863,7 @@ static irqreturn_t rswitch_data_irq(struct rswitch_private *priv, u32 *dis) static irqreturn_t rswitch_gwca_irq(int irq, void *dev_id) { struct rswitch_private *priv = dev_id; - u32 dis[RSWITCH_NUM_IRQ_REGS]; + u32 dis[GWCA_NUM_IRQ_REGS]; irqreturn_t ret = IRQ_NONE; rswitch_get_data_irq_status(priv, dis); @@ -1891,7 +1891,7 @@ static int renesas_eth_sw_probe(struct platform_device *pdev) priv->gwca.index = AGENT_INDEX_GWCA; priv->gwca.num_queues = min(RSWITCH_NUM_PORTS * NUM_QUEUES_PER_NDEV, - RSWITCH_MAX_NUM_QUEUES); + GWCA_AXI_CHAIN_N); priv->gwca.queues = devm_kcalloc(&pdev->dev, priv->gwca.num_queues, sizeof(*priv->gwca.queues), GFP_KERNEL); if (!priv->gwca.queues) diff --git a/drivers/net/ethernet/renesas/rswitch.h b/drivers/net/ethernet/renesas/rswitch.h index b3e0411b408e..550a6bff9078 100644 --- a/drivers/net/ethernet/renesas/rswitch.h +++ b/drivers/net/ethernet/renesas/rswitch.h @@ -10,8 +10,6 @@ #include #include "rcar_gen4_ptp.h" -#define RSWITCH_MAX_NUM_QUEUES 128 - #define RSWITCH_NUM_PORTS 3 #define rswitch_for_each_enabled_port(priv, i) \ for (i = 0; i < RSWITCH_NUM_PORTS; i++) \ @@ -50,6 +48,9 @@ #define AGENT_INDEX_GWCA 3 #define GWRO RSWITCH_GWCA0_OFFSET +#define GWCA_AXI_CHAIN_N 128 +#define GWCA_NUM_IRQ_REGS (GWCA_AXI_CHAIN_N / BITS_PER_TYPE(u32)) + #define GWCA_TS_IRQ_RESOURCE_NAME "gwca0_rxts0" #define GWCA_TS_IRQ_NAME "rswitch: gwca0_rxts0" #define GWCA_TS_IRQ_BIT BIT(0) @@ -949,7 +950,6 @@ struct rswitch_gwca_ts_info { u8 tag; }; -#define RSWITCH_NUM_IRQ_REGS (RSWITCH_MAX_NUM_QUEUES / BITS_PER_TYPE(u32)) struct rswitch_gwca { int index; struct rswitch_desc *linkfix_table; @@ -959,9 +959,9 @@ struct rswitch_gwca { int num_queues; struct rswitch_gwca_queue ts_queue; struct list_head ts_info_list; - DECLARE_BITMAP(used, RSWITCH_MAX_NUM_QUEUES); - u32 tx_irq_bits[RSWITCH_NUM_IRQ_REGS]; - u32 rx_irq_bits[RSWITCH_NUM_IRQ_REGS]; + DECLARE_BITMAP(used, GWCA_AXI_CHAIN_N); + u32 tx_irq_bits[GWCA_NUM_IRQ_REGS]; + u32 rx_irq_bits[GWCA_NUM_IRQ_REGS]; int speed; }; From patchwork Mon May 29 08:08:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13258292 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 858995661 for ; Mon, 29 May 2023 08:08:53 +0000 (UTC) Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id DC29AB5; Mon, 29 May 2023 01:08:51 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.00,200,1681138800"; d="scan'208";a="164772895" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 29 May 2023 17:08:49 +0900 Received: from localhost.localdomain (unknown [10.166.15.32]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id D6D67400C742; Mon, 29 May 2023 17:08:49 +0900 (JST) From: Yoshihiro Shimoda To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, geert+renesas@glider.be, magnus.damm@gmail.com Cc: netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH net-next 3/5] net: renesas: rswitch: Alloc all 128 queues Date: Mon, 29 May 2023 17:08:38 +0900 Message-Id: <20230529080840.1156458-4-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230529080840.1156458-1-yoshihiro.shimoda.uh@renesas.com> References: <20230529080840.1156458-1-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 To use per-queue rate limiter feature in the future, alloc all 128 queues (GWCA_AXI_CHAIN_N) of GWCA so that drop num_queues from struct rswitch_gwca. Notes that add a condition of gwca.used flag in rswitch_data_irq() because the previous code always set the flag of all queues. Signed-off-by: Yoshihiro Shimoda --- drivers/net/ethernet/renesas/rswitch.c | 19 ++++++++++--------- drivers/net/ethernet/renesas/rswitch.h | 1 - 2 files changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index 51df96de6fd5..4aab5d8aad2f 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -508,16 +508,16 @@ static int rswitch_gwca_queue_ext_ts_format(struct net_device *ndev, static int rswitch_gwca_linkfix_alloc(struct rswitch_private *priv) { - int i, num_queues = priv->gwca.num_queues; struct rswitch_gwca *gwca = &priv->gwca; struct device *dev = &priv->pdev->dev; + int i; - gwca->linkfix_table_size = sizeof(struct rswitch_desc) * num_queues; + gwca->linkfix_table_size = sizeof(struct rswitch_desc) * GWCA_AXI_CHAIN_N; gwca->linkfix_table = dma_alloc_coherent(dev, gwca->linkfix_table_size, &gwca->linkfix_table_dma, GFP_KERNEL); if (!gwca->linkfix_table) return -ENOMEM; - for (i = 0; i < num_queues; i++) + for (i = 0; i < GWCA_AXI_CHAIN_N; i++) gwca->linkfix_table[i].die_dt = DT_EOS; return 0; @@ -538,8 +538,8 @@ static struct rswitch_gwca_queue *rswitch_gwca_get(struct rswitch_private *priv) struct rswitch_gwca_queue *gq; int index; - index = find_first_zero_bit(priv->gwca.used, priv->gwca.num_queues); - if (index >= priv->gwca.num_queues) + index = find_first_zero_bit(priv->gwca.used, GWCA_AXI_CHAIN_N); + if (index >= GWCA_AXI_CHAIN_N) return NULL; set_bit(index, priv->gwca.used); gq = &priv->gwca.queues[index]; @@ -846,7 +846,10 @@ static irqreturn_t rswitch_data_irq(struct rswitch_private *priv, u32 *dis) struct rswitch_gwca_queue *gq; int i, index, bit; - for (i = 0; i < priv->gwca.num_queues; i++) { + for (i = 0; i < GWCA_AXI_CHAIN_N; i++) { + if (!test_bit(i, priv->gwca.used)) + continue; + gq = &priv->gwca.queues[i]; index = gq->index / 32; bit = BIT(gq->index % 32); @@ -1890,9 +1893,7 @@ static int renesas_eth_sw_probe(struct platform_device *pdev) } priv->gwca.index = AGENT_INDEX_GWCA; - priv->gwca.num_queues = min(RSWITCH_NUM_PORTS * NUM_QUEUES_PER_NDEV, - GWCA_AXI_CHAIN_N); - priv->gwca.queues = devm_kcalloc(&pdev->dev, priv->gwca.num_queues, + priv->gwca.queues = devm_kcalloc(&pdev->dev, GWCA_AXI_CHAIN_N, sizeof(*priv->gwca.queues), GFP_KERNEL); if (!priv->gwca.queues) return -ENOMEM; diff --git a/drivers/net/ethernet/renesas/rswitch.h b/drivers/net/ethernet/renesas/rswitch.h index 550a6bff9078..c3c2c92c2a1e 100644 --- a/drivers/net/ethernet/renesas/rswitch.h +++ b/drivers/net/ethernet/renesas/rswitch.h @@ -956,7 +956,6 @@ struct rswitch_gwca { dma_addr_t linkfix_table_dma; u32 linkfix_table_size; struct rswitch_gwca_queue *queues; - int num_queues; struct rswitch_gwca_queue ts_queue; struct list_head ts_info_list; DECLARE_BITMAP(used, GWCA_AXI_CHAIN_N); From patchwork Mon May 29 08:08:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13258293 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 173AA5661 for ; Mon, 29 May 2023 08:08:54 +0000 (UTC) Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5796FA7; Mon, 29 May 2023 01:08:52 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.00,200,1681138800"; d="scan'208";a="164772898" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 29 May 2023 17:08:50 +0900 Received: from localhost.localdomain (unknown [10.166.15.32]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 02263400C741; Mon, 29 May 2023 17:08:50 +0900 (JST) From: Yoshihiro Shimoda To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, geert+renesas@glider.be, magnus.damm@gmail.com Cc: netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH net-next 4/5] net: renesas: rswitch: Use AXI_TLIM_N queues if a TX queue Date: Mon, 29 May 2023 17:08:39 +0900 Message-Id: <20230529080840.1156458-5-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230529080840.1156458-1-yoshihiro.shimoda.uh@renesas.com> References: <20230529080840.1156458-1-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 To use per-queue rate limiter feature in the future, use AXI_TLIM_N queues if a TX queue. Signed-off-by: Yoshihiro Shimoda --- drivers/net/ethernet/renesas/rswitch.c | 10 ++++++---- drivers/net/ethernet/renesas/rswitch.h | 2 ++ 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index 4aab5d8aad2f..4ae34b0206cd 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -533,12 +533,14 @@ static void rswitch_gwca_linkfix_free(struct rswitch_private *priv) gwca->linkfix_table = NULL; } -static struct rswitch_gwca_queue *rswitch_gwca_get(struct rswitch_private *priv) +static struct rswitch_gwca_queue *rswitch_gwca_get(struct rswitch_private *priv, + bool dir_tx) { struct rswitch_gwca_queue *gq; int index; - index = find_first_zero_bit(priv->gwca.used, GWCA_AXI_CHAIN_N); + index = find_next_zero_bit(priv->gwca.used, GWCA_AXI_CHAIN_N, + dir_tx ? GWCA_AXI_TRIM_BASE : 0); if (index >= GWCA_AXI_CHAIN_N) return NULL; set_bit(index, priv->gwca.used); @@ -561,7 +563,7 @@ static int rswitch_txdmac_alloc(struct net_device *ndev) struct rswitch_private *priv = rdev->priv; int err; - rdev->tx_queue = rswitch_gwca_get(priv); + rdev->tx_queue = rswitch_gwca_get(priv, true); if (!rdev->tx_queue) return -EBUSY; @@ -595,7 +597,7 @@ static int rswitch_rxdmac_alloc(struct net_device *ndev) struct rswitch_private *priv = rdev->priv; int err; - rdev->rx_queue = rswitch_gwca_get(priv); + rdev->rx_queue = rswitch_gwca_get(priv, false); if (!rdev->rx_queue) return -EBUSY; diff --git a/drivers/net/ethernet/renesas/rswitch.h b/drivers/net/ethernet/renesas/rswitch.h index c3c2c92c2a1e..7ba45ddab42a 100644 --- a/drivers/net/ethernet/renesas/rswitch.h +++ b/drivers/net/ethernet/renesas/rswitch.h @@ -49,7 +49,9 @@ #define GWRO RSWITCH_GWCA0_OFFSET #define GWCA_AXI_CHAIN_N 128 +#define GWCA_AXI_TLIM_N 32 #define GWCA_NUM_IRQ_REGS (GWCA_AXI_CHAIN_N / BITS_PER_TYPE(u32)) +#define GWCA_AXI_TRIM_BASE (GWCA_AXI_CHAIN_N - GWCA_AXI_TLIM_N) #define GWCA_TS_IRQ_RESOURCE_NAME "gwca0_rxts0" #define GWCA_TS_IRQ_NAME "rswitch: gwca0_rxts0" From patchwork Mon May 29 08:08:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13258295 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 4966B6AB2 for ; Mon, 29 May 2023 08:08:55 +0000 (UTC) Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id AF4B590; Mon, 29 May 2023 01:08:52 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.00,200,1681138800"; d="scan'208";a="161242016" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 29 May 2023 17:08:50 +0900 Received: from localhost.localdomain (unknown [10.166.15.32]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 2286F400C741; Mon, 29 May 2023 17:08:50 +0900 (JST) From: Yoshihiro Shimoda To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, geert+renesas@glider.be, magnus.damm@gmail.com Cc: netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH net-next 5/5] net: renesas: rswitch: Use per-queue rate limiter Date: Mon, 29 May 2023 17:08:40 +0900 Message-Id: <20230529080840.1156458-6-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230529080840.1156458-1-yoshihiro.shimoda.uh@renesas.com> References: <20230529080840.1156458-1-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 Use per-queue rate limiter instead of global rate limiter. Otherwise TX performance will be low when we use multiple ports at the same time. Signed-off-by: Yoshihiro Shimoda --- drivers/net/ethernet/renesas/rswitch.c | 51 +++++++++++++++++--------- drivers/net/ethernet/renesas/rswitch.h | 15 +++++++- 2 files changed, 47 insertions(+), 19 deletions(-) diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index 4ae34b0206cd..a7195625a2c7 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -156,22 +156,31 @@ 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) +static void rswitch_gwca_set_rate_limit(struct rswitch_private *priv, + struct rswitch_gwca_queue *txq) { - u32 gwgrlulc, gwgrlc; + u64 period_ps; + unsigned long rate; + u32 gwrlc; - 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; - } + rate = clk_get_rate(priv->aclk); + if (!rate) + rate = RSWITCH_ACLK_DEFAULT; + + period_ps = div64_u64(1000000000000ULL, rate); + + /* GWRLC value = 256 * ACLK_period[ns] * maxBandwidth[Gbps] */ + gwrlc = 256 * period_ps * txq->speed / 1000000; + + /* To avoid overflow internally, the value should be 97% */ + gwrlc = gwrlc * 97 / 100; - iowrite32(gwgrlulc, priv->addr + GWGRLULC); - iowrite32(gwgrlc, priv->addr + GWGRLC); + dev_dbg(&priv->pdev->dev, + "%s: index = %d, speed = %d, rate = %ld, gwrlc = %08x\n", + __func__, txq->index_trim, txq->speed, rate, gwrlc); + + iowrite32(GWRLULC_NOT_REQUIRED, priv->addr + GWRLULC(txq->index_trim)); + iowrite32(gwrlc | GWRLC_RLE, priv->addr + GWRLC(txq->index_trim)); } static bool rswitch_is_any_data_irq(struct rswitch_private *priv, u32 *dis, bool tx) @@ -548,6 +557,10 @@ static struct rswitch_gwca_queue *rswitch_gwca_get(struct rswitch_private *priv, memset(gq, 0, sizeof(*gq)); gq->index = index; + /* The first "Rate limiter" queue is located at GWCA_AXI_CHAIN_N - 1 */ + if (dir_tx) + gq->index_trim = GWCA_AXI_CHAIN_N - index - 1; + return gq; } @@ -651,7 +664,6 @@ 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); for (i = 0; i < RSWITCH_NUM_PORTS; i++) { err = rswitch_rxdmac_init(priv, i); @@ -1441,6 +1453,8 @@ static int rswitch_open(struct net_device *ndev) napi_enable(&rdev->napi); netif_start_queue(ndev); + rswitch_gwca_set_rate_limit(rdev->priv, rdev->tx_queue); + rswitch_enadis_data_irq(rdev->priv, rdev->tx_queue->index, true); rswitch_enadis_data_irq(rdev->priv, rdev->rx_queue->index, true); @@ -1723,9 +1737,6 @@ static int rswitch_device_alloc(struct rswitch_private *priv, int index) if (err < 0) goto out_get_params; - if (rdev->priv->gwca.speed < rdev->etha->speed) - rdev->priv->gwca.speed = rdev->etha->speed; - err = rswitch_rxdmac_alloc(ndev); if (err < 0) goto out_rxdmac; @@ -1734,6 +1745,8 @@ static int rswitch_device_alloc(struct rswitch_private *priv, int index) if (err < 0) goto out_txdmac; + rdev->tx_queue->speed = rdev->etha->speed; + return 0; out_txdmac: @@ -1903,6 +1916,10 @@ static int renesas_eth_sw_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev); + priv->aclk = devm_clk_get_optional(&pdev->dev, "aclk"); + if (IS_ERR(priv->aclk)) + return PTR_ERR(priv->aclk); + ret = rswitch_init(priv); if (ret < 0) { pm_runtime_put(&pdev->dev); diff --git a/drivers/net/ethernet/renesas/rswitch.h b/drivers/net/ethernet/renesas/rswitch.h index 7ba45ddab42a..741f45266c29 100644 --- a/drivers/net/ethernet/renesas/rswitch.h +++ b/drivers/net/ethernet/renesas/rswitch.h @@ -7,9 +7,11 @@ #ifndef __RSWITCH_H__ #define __RSWITCH_H__ +#include #include #include "rcar_gen4_ptp.h" +#define RSWITCH_ACLK_DEFAULT 400000000UL #define RSWITCH_NUM_PORTS 3 #define rswitch_for_each_enabled_port(priv, i) \ for (i = 0; i < RSWITCH_NUM_PORTS; i++) \ @@ -676,7 +678,7 @@ enum rswitch_reg { GWIDACAM10 = GWRO + 0x0984, GWGRLC = GWRO + 0x0a00, GWGRLULC = GWRO + 0x0a04, - GWRLIVC0 = GWRO + 0x0a80, + GWRLC0 = GWRO + 0x0a80, GWRLULC0 = GWRO + 0x0a84, GWIDPC = GWRO + 0x0b00, GWIDC0 = GWRO + 0x0c00, @@ -778,6 +780,11 @@ enum rswitch_gwca_mode { #define GWTRC(queue) (GWTRC0 + (queue) / 32 * 4) #define GWDCC_OFFS(queue) (GWDCC0 + (queue) * 4) +#define GWRLC(trim) (GWRLC0 + (trim) * 8) +#define GWRLC_RLE BIT(16) +#define GWRLULC(trim) (GWRLULC0 + (trim) * 8) +#define GWRLULC_NOT_REQUIRED 0x00800000 + #define GWDIS(i) (GWDIS0 + (i) * 0x10) #define GWDIE(i) (GWDIE0 + (i) * 0x10) #define GWDID(i) (GWDID0 + (i) * 0x10) @@ -942,6 +949,10 @@ struct rswitch_gwca_queue { bool dir_tx; struct sk_buff **skbs; struct net_device *ndev; /* queue to ndev for irq */ + + /* For tx_ring */ + int index_trim; + int speed; }; struct rswitch_gwca_ts_info { @@ -963,7 +974,6 @@ struct rswitch_gwca { DECLARE_BITMAP(used, GWCA_AXI_CHAIN_N); u32 tx_irq_bits[GWCA_NUM_IRQ_REGS]; u32 rx_irq_bits[GWCA_NUM_IRQ_REGS]; - int speed; }; #define NUM_QUEUES_PER_NDEV 2 @@ -997,6 +1007,7 @@ struct rswitch_private { struct platform_device *pdev; void __iomem *addr; struct rcar_gen4_ptp_private *ptp_priv; + struct clk *aclk; struct rswitch_device *rdev[RSWITCH_NUM_PORTS]; DECLARE_BITMAP(opened_ports, RSWITCH_NUM_PORTS);