From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CD514C47DDB for ; Sun, 28 Jan 2024 16:15:38 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=Va9lCwBI; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4TNGkK3Vj0z3bvJ for ; Mon, 29 Jan 2024 03:15:37 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=Va9lCwBI; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=145.40.73.55; helo=sin.source.kernel.org; envelope-from=sashal@kernel.org; receiver=lists.ozlabs.org) Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4TNGjQ3PsJz2yk9 for ; Mon, 29 Jan 2024 03:14:50 +1100 (AEDT) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 9C3EFCE0C6A; Sun, 28 Jan 2024 16:14:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DB3FFC433C7; Sun, 28 Jan 2024 16:14:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706458485; bh=7Oc7XQZw0BQgE7vpQeYLErcpNOAZHMGGgfcBbkIJeDE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Va9lCwBIIFEK8Wjzgae8HaljqSkHWgy/Ma9zzXoES1GmZH4rRLjjZzZ+7+FSiqBvK X5Ypt/CMBm9OvZRhytTqxKr5NNtC7lqL6k55/eeSLMCgYS6O+kbpvY9ytRGECIX7L8 dHA8cwYU1Xotqq7Cgm2b82B961hzlPgjLG5PYToVDmMM77JWNGT2n/RGECOOtf2uEz SNPRM7NeH7Ac08dscE14dUWsKCoJbwP0aShPYVIzq53RFA6mhleH/3beyOaVX76w3c fCoBP8CxHVw4cKG32bsRJde1RhTr6WaGtx6kSg+c8KjPEYjenVKWtAT1xIErD5yTAg WwoZCNBVCUK6Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 6.1 12/27] PCI/AER: Decode Requester ID when no error info found Date: Sun, 28 Jan 2024 11:13:57 -0500 Message-ID: <20240128161424.203600-12-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240128161424.203600-1-sashal@kernel.org> References: <20240128161424.203600-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.1.75 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , Kuppuswamy Sathyanarayanan , linux-pci@vger.kernel.org, mahesh@linux.ibm.com, Jonathan Cameron , Bjorn Helgaas , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Bjorn Helgaas [ Upstream commit 1291b716bbf969e101d517bfb8ba18d958f758b8 ] When a device with AER detects an error, it logs error information in its own AER Error Status registers. It may send an Error Message to the Root Port (RCEC in the case of an RCiEP), which logs the fact that an Error Message was received (Root Error Status) and the Requester ID of the message source (Error Source Identification). aer_print_port_info() prints the Requester ID from the Root Port Error Source in the usual Linux "bb:dd.f" format, but when find_source_device() finds no error details in the hierarchy below the Root Port, it printed the raw Requester ID without decoding it. Decode the Requester ID in the usual Linux format so it matches other messages. Sample message changes: - pcieport 0000:00:1c.5: AER: Correctable error received: 0000:00:1c.5 - pcieport 0000:00:1c.5: AER: can't find device of ID00e5 + pcieport 0000:00:1c.5: AER: Correctable error message received from 0000:00:1c.5 + pcieport 0000:00:1c.5: AER: found no error details for 0000:00:1c.5 Link: https://lore.kernel.org/r/20231206224231.732765-3-helgaas@kernel.org Signed-off-by: Bjorn Helgaas Reviewed-by: Jonathan Cameron Reviewed-by: Kuppuswamy Sathyanarayanan Signed-off-by: Sasha Levin --- drivers/pci/pcie/aer.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index e2d8a74f83c3..5426f450ce91 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -748,7 +748,7 @@ static void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info) u8 bus = info->id >> 8; u8 devfn = info->id & 0xff; - pci_info(dev, "%s%s error received: %04x:%02x:%02x.%d\n", + pci_info(dev, "%s%s error message received from %04x:%02x:%02x.%d\n", info->multi_error_valid ? "Multiple " : "", aer_error_severity_string[info->severity], pci_domain_nr(dev->bus), bus, PCI_SLOT(devfn), @@ -936,7 +936,12 @@ static bool find_source_device(struct pci_dev *parent, pci_walk_bus(parent->subordinate, find_device_iter, e_info); if (!e_info->error_dev_num) { - pci_info(parent, "can't find device of ID%04x\n", e_info->id); + u8 bus = e_info->id >> 8; + u8 devfn = e_info->id & 0xff; + + pci_info(parent, "found no error details for %04x:%02x:%02x.%d\n", + pci_domain_nr(parent->bus), bus, PCI_SLOT(devfn), + PCI_FUNC(devfn)); return false; } return true; -- 2.43.0