+static pci_ers_result_t ioat_pcie_error_detected(struct pci_dev *pdev,
+ enum pci_channel_state error)
+{
+ dev_dbg(&pdev->dev, "%s: PCIe AER error %d\n", DRV_NAME, error);
+
+ /* quiesce and block I/O */
+ ioat_shutdown(pdev);
+
+ return PCI_ERS_RESULT_NEED_RESET;
+}
+
+static pci_ers_result_t ioat_pcie_error_slot_reset(struct pci_dev *pdev)
+{
+ pci_ers_result_t result = PCI_ERS_RESULT_RECOVERED;
+ int err;
+
+ dev_dbg(&pdev->dev, "%s post reset handling\n", DRV_NAME);
+
+ if (pci_enable_device_mem(pdev) < 0) {
+ dev_err(&pdev->dev,
+ "Failed to enable PCIe device after reset.\n");
+ result = PCI_ERS_RESULT_DISCONNECT;
+ } else {
+ pci_set_master(pdev);
+ pci_restore_state(pdev);
+ pci_save_state(pdev);
+ pci_wake_from_d3(pdev, false);
+ }
+
+ err = pci_cleanup_aer_uncorrect_error_status(pdev);
+ if (err) {
+ dev_err(&pdev->dev,
+ "AER uncorrect error status clear failed: %#x\n", err);
+ }
+
+ return result;
+}
+
+static void ioat_pcie_error_resume(struct pci_dev *pdev)
+{
+ struct ioatdma_device *ioat_dma = pci_get_drvdata(pdev);
+
+ dev_dbg(&pdev->dev, "%s: AER handling resuming\n", DRV_NAME);
+
+ /* initialize and bring everything back */
+ ioat_resume(ioat_dma);
+}
+
+static const struct pci_error_handlers ioat_err_handler = {
+ .error_detected = ioat_pcie_error_detected,
+ .slot_reset = ioat_pcie_error_slot_reset,
+ .resume = ioat_pcie_error_resume,
+};
+