20 static int check_pci_errors;		/* default NO check PCI parity */
21 static int edac_pci_panic_on_pe;	/* default NO panic on PCI Parity */
22 static int edac_pci_log_pe = 1;		/* log PCI parity errors */
23 static int edac_pci_log_npe = 1;	/* log PCI non-parity error errors */
58 /**************************** EDAC PCI sysfs instance *******************/
59 static ssize_t instance_pe_count_show(struct edac_pci_ctl_info *pci, char *data)  in instance_pe_count_show()  argument
61 	return sprintf(data, "%u\n", atomic_read(&pci->counters.pe_count));  in instance_pe_count_show()
64 static ssize_t instance_npe_count_show(struct edac_pci_ctl_info *pci,  in instance_npe_count_show()  argument
67 	return sprintf(data, "%u\n", atomic_read(&pci->counters.npe_count));  in instance_npe_count_show()
76 	struct edac_pci_ctl_info *pci;  in edac_pci_instance_release()  local
80 	/* Form pointer to containing struct, the pci control struct */  in edac_pci_instance_release()
81 	pci = to_instance(kobj);  in edac_pci_instance_release()
86 	kfree(pci);	/* Free the control struct */  in edac_pci_instance_release()
100 	struct edac_pci_ctl_info *pci = to_instance(kobj);  in edac_pci_instance_show()  local
104 		return instance_attr->show(pci, buffer);  in edac_pci_instance_show()
113 	struct edac_pci_ctl_info *pci = to_instance(kobj);  in edac_pci_instance_store()  local
117 		return instance_attr->store(pci, buffer, count);  in edac_pci_instance_store()
137 /* pci instance attributes */
144 /* the ktype for a pci instance */
154  *	construct one EDAC PCI instance's kobject for use
156 static int edac_pci_create_instance_kobj(struct edac_pci_ctl_info *pci, int idx)  in edac_pci_create_instance_kobj()  argument
164 	 * track the number of PCI instances we have, and thus nest  in edac_pci_create_instance_kobj()
174 	err = kobject_init_and_add(&pci->kobj, &ktype_pci_instance,  in edac_pci_create_instance_kobj()
175 				   edac_pci_top_main_kobj, "pci%d", idx);  in edac_pci_create_instance_kobj()
177 		edac_dbg(2, "failed to register instance pci%d\n", idx);  in edac_pci_create_instance_kobj()
182 	kobject_uevent(&pci->kobj, KOBJ_ADD);  in edac_pci_create_instance_kobj()
183 	edac_dbg(1, "Register instance 'pci%d' kobject\n", idx);  in edac_pci_create_instance_kobj()
195  *	unregister the kobj for the EDAC PCI instance
198 			struct edac_pci_ctl_info *pci)  in edac_pci_unregister_sysfs_instance_kobj()  argument
206 	kobject_put(&pci->kobj);  in edac_pci_unregister_sysfs_instance_kobj()
209 /***************************** EDAC PCI sysfs root **********************/
237 /* Set of show/store abstract level functions for PCI Parity object */
282 /* PCI Parity control files */
311  *	This kobj is the 'main' kobject that EDAC PCI instances
320 	/* last reference to top EDAC PCI kobject has been removed,  in edac_pci_release_main_kobj()
326 /* ktype struct for the EDAC PCI main kobj */
334  * edac_pci_main_kobj_setup: Setup the sysfs for EDAC PCI attributes.
354 	 * level main kobj for EDAC PCI  in edac_pci_main_kobj_setup()
369 	/* Instanstiate the pci object */  in edac_pci_main_kobj_setup()
372 				   &edac_subsys->dev_root->kobj, "pci");  in edac_pci_main_kobj_setup()
374 		edac_dbg(1, "Failed to register '.../edac/pci'\n");  in edac_pci_main_kobj_setup()
379 	 * for EDAC PCI, then edac_pci_main_kobj_teardown()  in edac_pci_main_kobj_setup()
383 	edac_dbg(1, "Registered '.../edac/pci' kobject\n");  in edac_pci_main_kobj_setup()
404  *	if no longer linked (needed) remove the top level EDAC PCI
421 int edac_pci_create_sysfs(struct edac_pci_ctl_info *pci)  in edac_pci_create_sysfs()  argument
424 	struct kobject *edac_kobj = &pci->kobj;  in edac_pci_create_sysfs()
426 	edac_dbg(0, "idx=%d\n", pci->pci_idx);  in edac_pci_create_sysfs()
428 	/* create the top main EDAC PCI kobject, IF needed */  in edac_pci_create_sysfs()
434 	err = edac_pci_create_instance_kobj(pci, pci->pci_idx);  in edac_pci_create_sysfs()
438 	err = sysfs_create_link(edac_kobj, &pci->dev->kobj, EDAC_PCI_SYMLINK);  in edac_pci_create_sysfs()
448 	edac_pci_unregister_sysfs_instance_kobj(pci);  in edac_pci_create_sysfs()
456 void edac_pci_remove_sysfs(struct edac_pci_ctl_info *pci)  in edac_pci_remove_sysfs()  argument
458 	edac_dbg(0, "index=%d\n", pci->pci_idx);  in edac_pci_remove_sysfs()
461 	sysfs_remove_link(&pci->kobj, EDAC_PCI_SYMLINK);  in edac_pci_remove_sysfs()
463 	/* remove this PCI instance's sysfs entries */  in edac_pci_remove_sysfs()
464 	edac_pci_unregister_sysfs_instance_kobj(pci);  in edac_pci_remove_sysfs()
467 	 * if this 'pci' is the last instance.  in edac_pci_remove_sysfs()
474 /************************ PCI error handling *************************/
484 	 * pulled but the Linux PCI layer has not yet finished cleaning up.  in get_pci_parity_status()
508 /* Clear any PCI parity errors logged by this device. */
523  *  PCI Parity polling
546 	edac_dbg(4, "PCI STATUS= 0x%04x %s\n", status, dev_name(&dev->dev));  in edac_pci_dev_parity_test()
577 	edac_dbg(4, "PCI HEADER TYPE= 0x%02x %s\n",  in edac_pci_dev_parity_test()
584 		edac_dbg(4, "PCI SEC_STATUS= 0x%04x %s\n",  in edac_pci_dev_parity_test()
623  *	Scan the PCI device list looking for SERRORs, Master Parity ERRORS or
637  *	performs the actual PCI parity check operation
645 	/* if policy has PCI check off, leave now */  in edac_pci_do_parity_check()
651 	/* scan all PCI devices looking for a Parity Error on devices and  in edac_pci_do_parity_check()
658 	/* Only if operator has selected panic on PCI Error */  in edac_pci_do_parity_check()
662 			panic("EDAC: PCI Parity Error");  in edac_pci_do_parity_check()
669  *	function to perform an iteration over the PCI devices
674 	/* Clear any PCI bus parity errors that devices initially have logged  in edac_pci_clear_parity_errors()
685 void edac_pci_handle_pe(struct edac_pci_ctl_info *pci, const char *msg)  in edac_pci_handle_pe()  argument
689 	atomic_inc(&pci->counters.pe_count);  in edac_pci_handle_pe()
692 		edac_pci_printk(pci, KERN_WARNING,  in edac_pci_handle_pe()
694 				pci->ctl_name, pci->pci_idx, msg);  in edac_pci_handle_pe()
697 	 * poke all PCI devices and see which one is the troublemaker  in edac_pci_handle_pe()
710 void edac_pci_handle_npe(struct edac_pci_ctl_info *pci, const char *msg)  in edac_pci_handle_npe()  argument
714 	atomic_inc(&pci->counters.npe_count);  in edac_pci_handle_npe()
717 		edac_pci_printk(pci, KERN_WARNING,  in edac_pci_handle_npe()
719 				pci->ctl_name, pci->pci_idx, msg);  in edac_pci_handle_npe()
722 	 * poke all PCI devices and see which one is the troublemaker  in edac_pci_handle_npe()
730  * Define the PCI parameter to the module
734 		 "Check for PCI bus parity errors: 0=off 1=on");
737 		 "Panic on PCI Bus Parity error: 0=off 1=on");