[PATCH 11/16] cxl/pci: Add isolation handler

[Ben Cheatham <Benjamin.Cheatham@amd.com>]

Add an error isolation handler for type 3 CXL devices. The current
behavior is to log any AER information and then panic.

Signed-off-by: Ben Cheatham <Benjamin.Cheatham@amd.com>
---
 drivers/cxl/pci.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index 2a56936ac4f2..b0f2400c6ac9 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -900,6 +900,13 @@ static struct attribute_group cxl_rcd_group = {
 };
 __ATTRIBUTE_GROUPS(cxl_rcd);
 
+static enum cxl_err_results
+cxl_pci_isolation_handler(struct cxl_dev_state *cxlds, bool lnk_down)
+{
+	cxl_error_detected(cxlds->dev);
+	return CXL_ERR_PANIC;
+}
+
 static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	struct pci_host_bridge *host_bridge = pci_find_host_bridge(pdev->bus);
@@ -1006,6 +1013,8 @@ static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (rc)
 		dev_dbg(&pdev->dev, "No CXL Features discovered\n");
 
+	cxlds->isolation_handler = cxl_pci_isolation_handler;
+
 	cxlmd = devm_cxl_add_memdev(&pdev->dev, cxlds);
 	if (IS_ERR(cxlmd))
 		return PTR_ERR(cxlmd);
-- 
2.34.1