From patchwork Tue Mar 16 12:18:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Voon, Weifeng" X-Patchwork-Id: 12142077 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E4ED1C433E0 for ; Tue, 16 Mar 2021 12:20:56 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7C76064EE2 for ; Tue, 16 Mar 2021 12:20:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7C76064EE2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:MIME-Version:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:Cc:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=6jiu6HNzg6rP0Cl5AbDzEeICgcgpRqki0o2SklKOHe4=; b=DKGQ694u1GsZ9mmbC9RTzfrEnD PrIhUXO+5jm31RWfTwtts5tLGthRO6R68QAlrY163PALHTRhTEJOmrilr2LTIY4HfInbGyzv6HSvT OFGQXIqOC7N/C/c9nqo0/Fqw5sZGw7Pp1oI/2eov7SESEiU+BF6hxNwWGFipwgFEACfYMxqmTAH5o 8hj3X1sbFoP68HuvEj3Fhq4p0VSz1j6SKkrbbfviqh789xqypvqUpmS3fXu847SoxFlxt3OJMKGgB 2uv3XmretVzqmP+Pgyds58B6AHgKpnjKdr9E1C+/VoATOjgEQsldvr3SVMpGiLc2ffWrhOsVzl0JA U6h5KgxQ==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lM8fT-000g2X-Cb; Tue, 16 Mar 2021 12:19:23 +0000 Received: from mga04.intel.com ([192.55.52.120]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lM8ew-000frw-M1 for linux-arm-kernel@lists.infradead.org; Tue, 16 Mar 2021 12:18:53 +0000 IronPort-SDR: 2TTW28unRxgp39ZWS7qq6QkA/Y06+60JJKkH9na8q1HyN8tSqgI+DyOcNWy2tc0x7yaYOxjs77 ZBByoHUQ5QuQ== X-IronPort-AV: E=McAfee;i="6000,8403,9924"; a="186870121" X-IronPort-AV: E=Sophos;i="5.81,251,1610438400"; d="scan'208";a="186870121" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Mar 2021 05:18:46 -0700 IronPort-SDR: mK6FkzXmq5OwBR5qHcwFLGjciFE4BCHfYBn0tCsX5oAJv3yr+/A6MpOu5BSzuf1YF/4ekUHDyh bcWYmwURdNRQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,251,1610438400"; d="scan'208";a="449703437" Received: from climb.png.intel.com ([10.221.118.165]) by orsmga001.jf.intel.com with ESMTP; 16 Mar 2021 05:18:43 -0700 From: Voon Weifeng To: "David S . Miller" , Maxime Coquelin Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Jose Abreu , Jakub Kicinski , Giuseppe Cavallaro , Andrew Lunn , Alexandre Torgue , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Ong Boon Leong , Voon Weifeng , Wong Vee Khee Subject: [RESEND v1 net-next 5/5] net: stmmac: use interrupt mode INTM=1 for multi-MSI Date: Tue, 16 Mar 2021 20:18:23 +0800 Message-Id: <20210316121823.18659-6-weifeng.voon@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210316121823.18659-1-weifeng.voon@intel.com> References: <20210316121823.18659-1-weifeng.voon@intel.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210316_121851_128173_7064A8A0 X-CRM114-Status: GOOD ( 14.73 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: "Wong, Vee Khee" For interrupt mode INTM=0, TX/RX transfer complete will trigger signal not only on sbd_perch_[tx|rx]_intr_o (Transmit/Receive Per Channel) but also on the sbd_intr_o (Common). As for multi-MSI implementation, setting interrupt mode INTM=1 is more efficient as each TX intr and RX intr (TI/RI) will be handled by TX/RX ISR without the need of calling the common MAC ISR. Updated the TX/RX NORMAL interrupts status checking process as the NIS status bit is not asserted for any RI/TI events for INTM=1. Signed-off-by: Wong, Vee Khee Co-developed-by: Voon Weifeng Signed-off-by: Voon Weifeng --- .../net/ethernet/stmicro/stmmac/dwmac4_dma.c | 8 +++++++ .../net/ethernet/stmicro/stmmac/dwmac4_dma.h | 3 +++ .../net/ethernet/stmicro/stmmac/dwmac4_lib.c | 23 +++++++++---------- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 1 + include/linux/stmmac.h | 1 + 5 files changed, 24 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c index 62aa0e95beb7..3c33b9a5b291 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c @@ -161,6 +161,14 @@ static void dwmac4_dma_init(void __iomem *ioaddr, value |= DMA_SYS_BUS_EAME; writel(value, ioaddr + DMA_SYS_BUS_MODE); + + value = readl(ioaddr + DMA_BUS_MODE); + + if (dma_cfg->multi_msi_en) { + value &= ~DMA_BUS_MODE_INTM_MASK; + value |= (DMA_BUS_MODE_INTM_MODE1 << DMA_BUS_MODE_INTM_SHIFT); + } + writel(value, ioaddr + DMA_BUS_MODE); } static void _dwmac4_dump_dma_regs(void __iomem *ioaddr, u32 channel, diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h index 5c0c53832adb..05481eb13ba6 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h @@ -25,6 +25,9 @@ #define DMA_TBS_CTRL 0x00001050 /* DMA Bus Mode bitmap */ +#define DMA_BUS_MODE_INTM_MASK GENMASK(17, 16) +#define DMA_BUS_MODE_INTM_SHIFT 16 +#define DMA_BUS_MODE_INTM_MODE1 0x1 #define DMA_BUS_MODE_SFT_RESET BIT(0) /* DMA SYS Bus Mode bitmap */ diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c index 3fa602dabf49..e63270267578 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c @@ -166,20 +166,19 @@ int dwmac4_dma_interrupt(void __iomem *ioaddr, } } /* TX/RX NORMAL interrupts */ - if (likely(intr_status & DMA_CHAN_STATUS_NIS)) { + if (likely(intr_status & DMA_CHAN_STATUS_NIS)) x->normal_irq_n++; - if (likely(intr_status & DMA_CHAN_STATUS_RI)) { - x->rx_normal_irq_n++; - ret |= handle_rx; - } - if (likely(intr_status & (DMA_CHAN_STATUS_TI | - DMA_CHAN_STATUS_TBU))) { - x->tx_normal_irq_n++; - ret |= handle_tx; - } - if (unlikely(intr_status & DMA_CHAN_STATUS_ERI)) - x->rx_early_irq++; + if (likely(intr_status & DMA_CHAN_STATUS_RI)) { + x->rx_normal_irq_n++; + ret |= handle_rx; + } + if (likely(intr_status & (DMA_CHAN_STATUS_TI | + DMA_CHAN_STATUS_TBU))) { + x->tx_normal_irq_n++; + ret |= handle_tx; } + if (unlikely(intr_status & DMA_CHAN_STATUS_ERI)) + x->rx_early_irq++; writel(intr_status & intr_en, ioaddr + DMA_CHAN_STATUS(chan)); return ret; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index efc35434b9af..d23722e86721 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -5401,6 +5401,7 @@ int stmmac_dvr_probe(struct device *device, priv->plat = plat_dat; priv->ioaddr = res->addr; priv->dev->base_addr = (unsigned long)res->addr; + priv->plat->dma_cfg->multi_msi_en = priv->plat->multi_msi_en; priv->dev->irq = res->irq; priv->wol_irq = res->wol_irq; diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index cb260a04df80..e35224ce61cc 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -96,6 +96,7 @@ struct stmmac_dma_cfg { int mixed_burst; bool aal; bool eame; + bool multi_msi_en; }; #define AXI_BLEN 7