linux-kernel - [PATCH v2 06/14] PCI/AER: Change AER driver to read UCE fatal status for all CXL PCIe port devices

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Message-ID: <20241025210305.27499-7-terry.bowman@amd.com>
Date: Fri, 25 Oct 2024 16:02:57 -0500
From: Terry Bowman <terry.bowman@....com>
To: <ming4.li@...el.com>, <linux-cxl@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-pci@...r.kernel.org>,
	<dave@...olabs.net>, <jonathan.cameron@...wei.com>, <dave.jiang@...el.com>,
	<alison.schofield@...el.com>, <vishal.l.verma@...el.com>,
	<dan.j.williams@...el.com>, <bhelgaas@...gle.com>, <mahesh@...ux.ibm.com>,
	<ira.weiny@...el.com>, <oohall@...il.com>, <Benjamin.Cheatham@....com>,
	<rrichter@....com>, <nathan.fontenot@....com>, <terry.bowman@....com>,
	<Smita.KoralahalliChannabasappa@....com>
Subject: [PATCH v2 06/14] PCI/AER: Change AER driver to read UCE fatal status for all CXL PCIe port devices

The AER service driver's aer_get_device_error_info() function doesn't read
uncorrectable (UCE) fatal error status from PCIe upstream port devices,
including CXL upstream switch ports. As a result, fatal errors are not
logged or handled as needed for CXL PCIe upstream switch port devices.

Update the aer_get_device_error_info() function to read the UCE fatal
status for all CXL PCIe port devices.

The fatal error status will be used in future patches implementing
CXL PCIe port uncorrectable error handling and logging.

Signed-off-by: Terry Bowman <terry.bowman@....com>
---
 drivers/pci/pcie/aer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index 1d3e5b929661..d772f123c6a2 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -1250,6 +1250,7 @@ int aer_get_device_error_info(struct pci_dev *dev, struct aer_err_info *info)
 	} else if (type == PCI_EXP_TYPE_ROOT_PORT ||
 		   type == PCI_EXP_TYPE_RC_EC ||
 		   type == PCI_EXP_TYPE_DOWNSTREAM ||
+		   type == PCI_EXP_TYPE_UPSTREAM ||
 		   info->severity == AER_NONFATAL) {
 
 		/* Link is still healthy for IO reads */
-- 
2.34.1