From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CFF6F14463A; Sun, 28 Jan 2024 16:16:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706458606; cv=none; b=XoaSctYmi6HxAeMZyqKsTgaoH4Kg7MK1TavaJrNCSqD4ePf5k8Zi+ewaRGztNUUB+EVPAIKMWdRhTHGHRnD42gvqKE65XScP/n00t/cEBLjTk9F+majlkvXhb2GMuCWkjxbeJCtQKNrvViEO1N6FICa5VzWJf+s9RfBK3sQ/65Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706458606; c=relaxed/simple; bh=ibuTUKfdCzg4UDqPb3PSDJf0BgqNp+ixUt1f6mQxToA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fy0mEilp2OiwlnhtSzfGoNwAjKIuMF/B1zvFnTpO7svjrYSuI+WgDudF3L0z8i1NR8wtezFjoutb3qEXLqXOJh504JkSEoAe0+jkP050WhNGRD+3bviJ+adIgUKp1wPQqjE2j7xQmXXkz+CN8piD3YHtx7HlDQIBWZyT+VzvKBc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fS0W0u7J; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fS0W0u7J" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ACF8EC43399; Sun, 28 Jan 2024 16:16:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706458606; bh=ibuTUKfdCzg4UDqPb3PSDJf0BgqNp+ixUt1f6mQxToA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fS0W0u7J3fzQ/RhXsp5XlTTBjuxphbq7Pff35JQrbp47YEHfkU7BnVPZ2jJnFSEjr l2m+x9Nkhedi1NAmgJTi+BmHakdSyOSB7OI6a8sbcXl0ijvKBfThte4umLKY0WXa+a Su1AqK5EbTikRv1GYGaHkWbRb3j5lnr7rJU7uUoIBu1GqcbNIa2iCnnGz3iyuIHIUb ZB0jIO+opAgYkjxfFaBLZv7WpVbPgnT/4dzreOnx/OirhV2pGqQP4vCuzqs8ZX1RDy 555Nsly1a6XOUJgKPQhzfUTQdXHtKIbCKH3b1hXhIIULa0p5Qu/DWSIfbyfhB01jvA BCAvwdK5Y6yIg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Bjorn Helgaas , Jonathan Cameron , Kuppuswamy Sathyanarayanan , Sasha Levin , mahesh@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 05/11] PCI/AER: Decode Requester ID when no error info found Date: Sun, 28 Jan 2024 11:16:26 -0500 Message-ID: <20240128161637.205509-5-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240128161637.205509-1-sashal@kernel.org> References: <20240128161637.205509-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.4.268 Content-Transfer-Encoding: 8bit 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 aec1748cc821..6b5c9f7916fa 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -782,7 +782,7 @@ 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), @@ -968,7 +968,12 @@ 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