From patchwork Mon Apr 2 16:22:03 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Keith Busch X-Patchwork-Id: 10320041 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.web.codeaurora.org (Postfix) with ESMTP id 5E15160247 for ; Mon, 2 Apr 2018 16:20:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4DBC920453 for ; Mon, 2 Apr 2018 16:20:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3FA54209D8; Mon, 2 Apr 2018 16:20:02 +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=-6.9 required=2.0 tests=BAYES_00,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 D29A020453 for ; Mon, 2 Apr 2018 16:20:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752412AbeDBQUA (ORCPT ); Mon, 2 Apr 2018 12:20:00 -0400 Received: from mga11.intel.com ([192.55.52.93]:40107 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752531AbeDBQT6 (ORCPT ); Mon, 2 Apr 2018 12:19:58 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 02 Apr 2018 09:19:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,396,1517904000"; d="scan'208";a="40113156" Received: from unknown (HELO localhost.lm.intel.com) ([10.232.112.44]) by orsmga003.jf.intel.com with ESMTP; 02 Apr 2018 09:19:58 -0700 From: Keith Busch To: Linux PCI , Bjorn Helgaas Cc: Oza Pawandeep , Sinan Kaya , Keith Busch Subject: [PATCHv2 7/7] PCI/DPC: Print AER status in DPC event handling Date: Mon, 2 Apr 2018 10:22:03 -0600 Message-Id: <20180402162203.3370-8-keith.busch@intel.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20180402162203.3370-1-keith.busch@intel.com> References: <20180402162203.3370-1-keith.busch@intel.com> 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 A DPC enabled device suppresses ERR_(NON)FATAL messages, preventing the AER handler from reporting error details. If the DPC trigger reason says the downstream port detected the error, this patch has the DPC driver collect the AER uncorrectable status for logging, then clears the status. Signed-off-by: Keith Busch --- drivers/pci/pcie/pcie-dpc.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/pci/pcie/pcie-dpc.c b/drivers/pci/pcie/pcie-dpc.c index e12837ee4f1c..76f963a5089e 100644 --- a/drivers/pci/pcie/pcie-dpc.c +++ b/drivers/pci/pcie/pcie-dpc.c @@ -85,6 +85,7 @@ static void dpc_wait_link_inactive(struct dpc_dev *dpc) static void dpc_work(struct work_struct *work) { + struct aer_err_info info; struct dpc_dev *dpc = container_of(work, struct dpc_dev, work); struct pci_dev *dev, *temp, *pdev = dpc->dev->port; struct pci_bus *parent = pdev->subordinate; @@ -108,8 +109,12 @@ static void dpc_work(struct work_struct *work) (ext_reason == 1) ? "software trigger" : "reserved error"); - if (dpc->rp_extensions && reason == 3 && ext_reason == 0) + if (dpc->rp_extensions && reason == 3 && ext_reason == 0) { pio_status = dpc_process_rp_pio_error(dpc); + } else if (reason == 0 && aer_get_device_error_info(pdev, &info)) { + aer_print_error(pdev, &info); + pci_cleanup_aer_uncorrect_error_status(pdev); + } pci_lock_rescan_remove(); list_for_each_entry_safe_reverse(dev, temp, &parent->devices,