From patchwork Tue Jan 13 19:44:47 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Felipe Balbi X-Patchwork-Id: 5623891 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8EA7B9F358 for ; Tue, 13 Jan 2015 19:45:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9412D20374 for ; Tue, 13 Jan 2015 19:45:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 733D1202E5 for ; Tue, 13 Jan 2015 19:45:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753005AbbAMTph (ORCPT ); Tue, 13 Jan 2015 14:45:37 -0500 Received: from arroyo.ext.ti.com ([192.94.94.40]:50666 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752646AbbAMTpg (ORCPT ); Tue, 13 Jan 2015 14:45:36 -0500 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id t0DJjXSb020253; Tue, 13 Jan 2015 13:45:33 -0600 Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id t0DJjXDR024370; Tue, 13 Jan 2015 13:45:33 -0600 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.3.174.1; Tue, 13 Jan 2015 13:45:33 -0600 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id t0DJjWHw001959; Tue, 13 Jan 2015 13:45:33 -0600 From: Felipe Balbi To: CC: Tony Lindgren , Linux OMAP Mailing List , , , Felipe Balbi Subject: [patch-net-next 2/3] net: ethernet: cpsw: split out IRQ handler Date: Tue, 13 Jan 2015 13:44:47 -0600 Message-ID: <1421178288-7393-2-git-send-email-balbi@ti.com> X-Mailer: git-send-email 2.2.0 In-Reply-To: <1421178288-7393-1-git-send-email-balbi@ti.com> References: <1421178288-7393-1-git-send-email-balbi@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Now we can introduce dedicated IRQ handlers for each of the IRQ events. This helps with cleaning up a little bit of the clutter in cpsw_interrupt() while also making sure that TX IRQs will try to handle TX buffers while RX IRQs will try to handle RX buffers. Signed-off-by: Felipe Balbi --- drivers/net/ethernet/ti/cpsw.c | 41 ++++++++++++++++++++++++++++++----------- 1 file changed, 30 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 6e04128b9543..c9081bdbbcbc 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -754,18 +754,36 @@ requeue: dev_kfree_skb_any(new_skb); } -static irqreturn_t cpsw_interrupt(int irq, void *dev_id) +static irqreturn_t cpsw_dummy_interrupt(int irq, void *dev_id) { struct cpsw_priv *priv = dev_id; int value = irq - priv->irqs_table[0]; - /* NOTICE: Ending IRQ here. The trick with the 'value' variable above - * is to make sure we will always write the correct value to the EOI - * register. Namely 0 for RX_THRESH Interrupt, 1 for RX Interrupt, 2 - * for TX Interrupt and 3 for MISC Interrupt. - */ cpdma_ctlr_eoi(priv->dma, value); + return IRQ_HANDLED; +} + +static irqreturn_t cpsw_tx_interrupt(int irq, void *dev_id) +{ + struct cpsw_priv *priv = dev_id; + + cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX); + cpdma_chan_process(priv->txch, 128); + + priv = cpsw_get_slave_priv(priv, 1); + if (priv) + cpdma_chan_process(priv->txch, 128); + + return IRQ_HANDLED; +} + +static irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id) +{ + struct cpsw_priv *priv = dev_id; + + cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX); + cpsw_intr_disable(priv); if (priv->irq_enabled == true) { cpsw_disable_irq(priv); @@ -1617,7 +1635,8 @@ static void cpsw_ndo_poll_controller(struct net_device *ndev) cpsw_intr_disable(priv); cpdma_ctlr_int_ctrl(priv->dma, false); - cpsw_interrupt(ndev->irq, priv); + cpsw_rx_interrupt(priv->irq[1], priv); + cpsw_tx_interrupt(priv->irq[2], priv); cpdma_ctlr_int_ctrl(priv->dma, true); cpsw_intr_enable(priv); } @@ -2351,7 +2370,7 @@ static int cpsw_probe(struct platform_device *pdev) goto clean_ale_ret; priv->irqs_table[0] = irq; - ret = devm_request_irq(&pdev->dev, irq, cpsw_interrupt, + ret = devm_request_irq(&pdev->dev, irq, cpsw_dummy_interrupt, 0, dev_name(&pdev->dev), priv); if (ret < 0) { dev_err(priv->dev, "error attaching irq (%d)\n", ret); @@ -2363,7 +2382,7 @@ static int cpsw_probe(struct platform_device *pdev) goto clean_ale_ret; priv->irqs_table[1] = irq; - ret = devm_request_irq(&pdev->dev, irq, cpsw_interrupt, + ret = devm_request_irq(&pdev->dev, irq, cpsw_rx_interrupt, 0, dev_name(&pdev->dev), priv); if (ret < 0) { dev_err(priv->dev, "error attaching irq (%d)\n", ret); @@ -2375,7 +2394,7 @@ static int cpsw_probe(struct platform_device *pdev) goto clean_ale_ret; priv->irqs_table[2] = irq; - ret = devm_request_irq(&pdev->dev, irq, cpsw_interrupt, + ret = devm_request_irq(&pdev->dev, irq, cpsw_tx_interrupt, 0, dev_name(&pdev->dev), priv); if (ret < 0) { dev_err(priv->dev, "error attaching irq (%d)\n", ret); @@ -2387,7 +2406,7 @@ static int cpsw_probe(struct platform_device *pdev) goto clean_ale_ret; priv->irqs_table[3] = irq; - ret = devm_request_irq(&pdev->dev, irq, cpsw_interrupt, + ret = devm_request_irq(&pdev->dev, irq, cpsw_dummy_interrupt, 0, dev_name(&pdev->dev), priv); if (ret < 0) { dev_err(priv->dev, "error attaching irq (%d)\n", ret);