drivers/edac/x38_edac.c

Source file repositories/reference/linux-study-clean/drivers/edac/x38_edac.c

File Facts

System
Linux kernel
Corpus path
drivers/edac/x38_edac.c
Extension
.c
Size
12221 bytes
Lines
527
Domain
Driver Families
Bucket
drivers/edac
Inferred role
Driver Families: operation-table or driver-model contract
Status
pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

static struct pci_driver x38_driver = {
	.name = EDAC_MOD_STR,
	.probe = x38_init_one,
	.remove = x38_remove_one,
	.id_table = x38_pci_tbl,
};

static int __init x38_init(void)
{
	int pci_rc;

	edac_dbg(3, "MC:\n");

	/* Ensure that the OPSTATE is set correctly for POLL or NMI */
	opstate_init();

	pci_rc = pci_register_driver(&x38_driver);
	if (pci_rc < 0)
		goto fail0;

	if (!mci_pdev) {
		x38_registered = 0;
		mci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
					PCI_DEVICE_ID_INTEL_X38_HB, NULL);
		if (!mci_pdev) {
			edac_dbg(0, "x38 pci_get_device fail\n");
			pci_rc = -ENODEV;
			goto fail1;
		}

		pci_rc = x38_init_one(mci_pdev, x38_pci_tbl);
		if (pci_rc < 0) {
			edac_dbg(0, "x38 init fail\n");
			pci_rc = -ENODEV;
			goto fail1;
		}
	}

	return 0;

fail1:
	pci_unregister_driver(&x38_driver);

fail0:
	pci_dev_put(mci_pdev);

	return pci_rc;
}

static void __exit x38_exit(void)
{
	edac_dbg(3, "MC:\n");

	pci_unregister_driver(&x38_driver);
	if (!x38_registered) {
		x38_remove_one(mci_pdev);
		pci_dev_put(mci_pdev);
	}
}

module_init(x38_init);
module_exit(x38_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Cluster Computing, Inc. Hitoshi Mitake");
MODULE_DESCRIPTION("MC support for Intel X38 memory hub controllers");

module_param(edac_op_state, int, 0444);
MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");

Annotation

Implementation Notes