From patchwork Fri Sep 21 10:21:36 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 10609763 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8CE1815E8 for ; Fri, 21 Sep 2018 10:28:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7DFD82CA34 for ; Fri, 21 Sep 2018 10:28:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6FAB12CA42; Fri, 21 Sep 2018 10:28:16 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E0BEE2CA34 for ; Fri, 21 Sep 2018 10:28:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390015AbeIUQMd (ORCPT ); Fri, 21 Sep 2018 12:12:33 -0400 Received: from lelv0142.ext.ti.com ([198.47.23.249]:51406 "EHLO lelv0142.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390016AbeIUQMd (ORCPT ); Fri, 21 Sep 2018 12:12:33 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id w8LANwdd033358; Fri, 21 Sep 2018 05:23:58 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1537525438; bh=JS8XxeiLDwlWjMuWVe6AENveVa8okkl8KrO0t1BBcnw=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=NXNlI2iH7IZY4U/SQ1UYE5vnYHF9vSqt0NJEbAtwBm2HaVPFS5CAeM7+QzOD2uNTI hljwJDGKsGEKeeKSx1ZeDlwLzDmgab+Z1qIw54DoV0GirZ1cHastPIv4d3ALjp3Ecg BWhvSJ0X34qQQSGXojVsi1Se0q4209csvmFrYAnU= Received: from DLEE104.ent.ti.com (dlee104.ent.ti.com [157.170.170.34]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id w8LANwHA019071; Fri, 21 Sep 2018 05:23:58 -0500 Received: from DLEE109.ent.ti.com (157.170.170.41) by DLEE104.ent.ti.com (157.170.170.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1466.3; Fri, 21 Sep 2018 05:23:58 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DLEE109.ent.ti.com (157.170.170.41) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1466.3 via Frontend Transport; Fri, 21 Sep 2018 05:23:57 -0500 Received: from a0393678ub.dal.design.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id w8LAMEtP032280; Fri, 21 Sep 2018 05:23:53 -0500 From: Kishon Vijay Abraham I To: Jingoo Han , Joao Pinto , Bjorn Helgaas , Rob Herring , Lorenzo Pieralisi , Murali Karicheri , Kishon Vijay Abraham I , CC: Mark Rutland , Santosh Shilimkar , Tero Kristo , Nishanth Menon , , , , Subject: [RFC PATCH 21/40] PCI: keystone: Add debug error message for all errors Date: Fri, 21 Sep 2018 15:51:36 +0530 Message-ID: <20180921102155.22839-22-kishon@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180921102155.22839-1-kishon@ti.com> References: <20180921102155.22839-1-kishon@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP commit 025dd3daeda77f61a280da87ae701 ("PCI: keystone: Add error IRQ handler") added dev_err() message only for ERR_AXI and ERR_FATAL. Add debug error message for ERR_SYS, ERR_NONFATAL, ERR_CORR and ERR_AER here. While at that avoid using ERR_IRQ_STATUS_RAW and use ERR_IRQ_STATUS instead. Signed-off-by: Kishon Vijay Abraham I --- drivers/pci/controller/dwc/pci-keystone.c | 45 +++++++++++++---------- 1 file changed, 25 insertions(+), 20 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c index 240c39c58b0f..a3dec74da70c 100644 --- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -74,8 +74,6 @@ #define ERR_SYS BIT(0) /* System (fatal, non-fatal, or correctable) */ #define ERR_IRQ_ALL (ERR_AER | ERR_AXI | ERR_CORR | \ ERR_NONFATAL | ERR_FATAL | ERR_SYS) -#define ERR_FATAL_IRQ (ERR_FATAL | ERR_AXI) -#define ERR_IRQ_STATUS_RAW 0x1c0 #define ERR_IRQ_STATUS 0x1c4 #define ERR_IRQ_ENABLE_SET 0x1c8 #define ERR_IRQ_ENABLE_CLR 0x1cc @@ -180,23 +178,6 @@ static void ks_pcie_enable_error_irq(struct keystone_pcie *ks_pcie) ks_pcie_app_writel(ks_pcie, ERR_IRQ_ENABLE_SET, ERR_IRQ_ALL); } -static irqreturn_t ks_pcie_handle_error_irq(struct keystone_pcie *ks_pcie) -{ - u32 status; - - status = ks_pcie_app_readl(ks_pcie, ERR_IRQ_STATUS_RAW) & ERR_IRQ_ALL; - if (!status) - return IRQ_NONE; - - if (status & ERR_FATAL_IRQ) - dev_err(ks_pcie->pci->dev, "fatal error (status %#010x)\n", - status); - - /* Ack the IRQ; status bits are RW1C */ - ks_pcie_app_writel(ks_pcie, ERR_IRQ_STATUS, status); - return IRQ_HANDLED; -} - /** * ks_pcie_set_dbi_mode() - Set DBI mode to access overlaid BAR mask * registers @@ -636,9 +617,33 @@ static const struct dw_pcie_host_ops ks_pcie_host_ops = { static irqreturn_t ks_pcie_err_irq_handler(int irq, void *priv) { + u32 reg; struct keystone_pcie *ks_pcie = priv; + struct device *dev = ks_pcie->pci->dev; - return ks_pcie_handle_error_irq(ks_pcie); + reg = ks_pcie_app_readl(ks_pcie, ERR_IRQ_STATUS); + + if (reg & ERR_SYS) + dev_err(dev, "System Error\n"); + + if (reg & ERR_FATAL) + dev_err(dev, "Fatal Error\n"); + + if (reg & ERR_NONFATAL) + dev_dbg(dev, "Non Fatal Error\n"); + + if (reg & ERR_CORR) + dev_dbg(dev, "Correctable Error\n"); + + if (reg & ERR_AXI) + dev_err(dev, "AXI tag lookup fatal Error\n"); + + if (reg & ERR_AER) + dev_err(dev, "ECRC Error\n"); + + ks_pcie_app_writel(ks_pcie, ERR_IRQ_STATUS, reg); + + return IRQ_HANDLED; } static int __init ks_pcie_add_pcie_port(struct keystone_pcie *ks_pcie,