The error recovery is handled by management firmware (MFW) with the help of
qed/qedi drivers. Upon detecting the errors, driver informs MFW about this
event which in turn starts a recovery process. MFW sends ERROR_RECOVERY
notification to the driver which performs the required cleanup/recovery
from the driver side.
Signed-off-by: Manish Rangankar <mrangankar@xxxxxxxxxxx>
---
drivers/scsi/qedi/qedi_main.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index 1d8c78c41405..10a7ee055552 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -2391,6 +2391,25 @@ static int qedi_setup_boot_info(struct qedi_ctx *qedi)
return -ENOMEM;
}
+static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state)
+{
+ struct qedi_ctx *qedi = pci_get_drvdata(pdev);
+
+ QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n",
+ __func__, state);
+
+ if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
+ QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
+ "Recovery already in progress.\n");
+ return PCI_ERS_RESULT_NONE;
+ }
+
+ qedi_ops->common->recovery_process(qedi->cdev);
+
+ return PCI_ERS_RESULT_CAN_RECOVER;
+}
+
static void __qedi_remove(struct pci_dev *pdev, int mode)
{
struct qedi_ctx *qedi = pci_get_drvdata(pdev);
@@ -2820,12 +2839,17 @@ MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
static enum cpuhp_state qedi_cpuhp_state;
+static struct pci_error_handlers qedi_err_handler = {
+ .error_detected = qedi_io_error_detected,
+};
+
static struct pci_driver qedi_pci_driver = {
.name = QEDI_MODULE_NAME,
.id_table = qedi_pci_tbl,
.probe = qedi_probe,
.remove = qedi_remove,
.shutdown = qedi_shutdown,
+ .err_handler = &qedi_err_handler,
};
static int __init qedi_init(void)
--
2.25.0
