powerpc/kernel/eeh_driver.c

76 static bool eeh_dev_removed(struct eeh_dev *edev)
78 	return !edev || (edev->mode & EEH_DEV_REMOVED);
81 static bool eeh_edev_actionable(struct eeh_dev *edev)
83 	if (!edev->pdev)
85 	if (edev->pdev->error_state == pci_channel_io_perm_failure)
87 	if (eeh_dev_removed(edev))
89 	if (eeh_pe_passed(edev->pe))
140 static void eeh_disable_irq(struct eeh_dev *edev)
146 	if (edev->pdev->msi_enabled || edev->pdev->msix_enabled)
149 	if (!irq_has_action(edev->pdev->irq))
152 	edev->mode |= EEH_DEV_IRQ_DISABLED;
153 	disable_irq_nosync(edev->pdev->irq);
163 static void eeh_enable_irq(struct eeh_dev *edev)
165 	if ((edev->mode) & EEH_DEV_IRQ_DISABLED) {
166 		edev->mode &= ~EEH_DEV_IRQ_DISABLED;
187 		if (irqd_irq_disabled(irq_get_irq_data(edev->pdev->irq)))
188 			enable_irq(edev->pdev->irq);
192 static void eeh_dev_save_state(struct eeh_dev *edev, void *userdata)
196 	if (!edev)
206 	if (edev->pe && (edev->pe->state & EEH_PE_CFG_RESTRICTED))
209 	pdev = eeh_dev_to_pci_dev(edev);
219 	struct eeh_dev *edev, *tmp;
222 		eeh_pe_for_each_dev(pe, edev, tmp)
223 			if (eeh_edev_actionable(edev))
224 				edev->pdev->error_state = s;
230 	struct eeh_dev *edev, *tmp;
233 		eeh_pe_for_each_dev(pe, edev, tmp) {
234 			if (!eeh_edev_actionable(edev))
237 			if (!eeh_pcid_get(edev->pdev))
241 				eeh_enable_irq(edev);
243 				eeh_disable_irq(edev);
245 			eeh_pcid_put(edev->pdev);
253 static void eeh_pe_report_edev(struct eeh_dev *edev, eeh_report_fn fn,
261 	pdev = edev->pdev;
266 		eeh_edev_info(edev, "no device");
270 	if (eeh_edev_actionable(edev)) {
274 			eeh_edev_info(edev, "no driver");
276 			eeh_edev_info(edev, "driver not EEH aware");
277 		else if (edev->mode & EEH_DEV_NO_HANDLER)
278 			eeh_edev_info(edev, "driver bound too late");
280 			new_result = fn(edev, pdev, driver);
281 			eeh_edev_info(edev, "%s driver reports: '%s'",
291 		eeh_edev_info(edev, "not actionable (%d,%d,%d)", !!pdev,
292 			      !eeh_dev_removed(edev), !eeh_pe_passed(edev->pe));
295 	if (edev->pdev != pdev)
296 		eeh_edev_warn(edev, "Device changed during processing!\n");
304 	struct eeh_dev *edev, *tmp;
307 	eeh_for_each_pe(root, pe) eeh_pe_for_each_dev(pe, edev, tmp)
308 		eeh_pe_report_edev(edev, fn, result);
318  * @edev: eeh device
323 static enum pci_ers_result eeh_report_error(struct eeh_dev *edev,
332 	eeh_edev_info(edev, "Invoking %s->error_detected(IO frozen)",
336 	edev->in_error = true;
343  * @edev: eeh device
349 static enum pci_ers_result eeh_report_mmio_enabled(struct eeh_dev *edev,
355 	eeh_edev_info(edev, "Invoking %s->mmio_enabled()", driver->name);
361  * @edev: eeh device
369 static enum pci_ers_result eeh_report_reset(struct eeh_dev *edev,
373 	if (!driver->err_handler->slot_reset || !edev->in_error)
375 	eeh_edev_info(edev, "Invoking %s->slot_reset()", driver->name);
379 static void eeh_dev_restore_state(struct eeh_dev *edev, void *userdata)
383 	if (!edev)
392 	if (edev->pe && (edev->pe->state & EEH_PE_CFG_RESTRICTED)) {
393 		if (list_is_last(&edev->entry, &edev->pe->edevs))
394 			eeh_pe_restore_bars(edev->pe);
399 	pdev = eeh_dev_to_pci_dev(edev);
408  * @edev: eeh device
415 static enum pci_ers_result eeh_report_resume(struct eeh_dev *edev,
419 	if (!driver->err_handler->resume || !edev->in_error)
422 	eeh_edev_info(edev, "Invoking %s->resume()", driver->name);
425 	pci_uevent_ers(edev->pdev, PCI_ERS_RESULT_RECOVERED);
428 		eeh_ops->notify_resume(edev);
435  * @edev: eeh device
441 static enum pci_ers_result eeh_report_failure(struct eeh_dev *edev,
450 	eeh_edev_info(edev, "Invoking %s->error_detected(permanent failure)",
459 static void *eeh_add_virt_device(struct eeh_dev *edev)
462 	struct pci_dev *dev = eeh_dev_to_pci_dev(edev);
464 	if (!(edev->physfn)) {
465 		eeh_edev_warn(edev, "Not for VF\n");
479 	pci_iov_add_virtfn(edev->physfn, edev->vf_index);
484 static void eeh_rmv_device(struct eeh_dev *edev, void *userdata)
487 	struct pci_dev *dev = eeh_dev_to_pci_dev(edev);
497 	if (!eeh_edev_actionable(edev) ||
517 	edev->mode |= EEH_DEV_DISCONNECTED;
521 	if (edev->physfn) {
523 		pci_iov_remove_virtfn(edev->physfn, edev->vf_index);
524 		edev->pdev = NULL;
527 			list_add(&edev->rmv_entry, &rmv_data->removed_vf_list);
537 	struct eeh_dev *edev, *tmp;
539 	eeh_pe_for_each_dev(pe, edev, tmp) {
540 		if (!(edev->mode & EEH_DEV_DISCONNECTED))
543 		edev->mode &= ~(EEH_DEV_DISCONNECTED | EEH_DEV_IRQ_DISABLED);
544 		eeh_pe_tree_remove(edev);
629 	struct eeh_dev *edev;
697 		edev = list_first_entry(&pe->edevs, struct eeh_dev, entry);
700 			eeh_add_virt_device(edev);
838 	struct eeh_dev *edev, *tmp;
863 		eeh_pe_for_each_dev(tmp_pe, edev, tmp)
864 			if (eeh_slot_presence_check(edev->pdev))
917 		eeh_pe_for_each_dev(tmp_pe, edev, tmp)
918 			edev->mode &= ~EEH_DEV_NO_HANDLER;
1042 		list_for_each_entry_safe(edev, tmp, &rmv_data.removed_vf_list,
1044 			eeh_add_virt_device(edev);
1045 			list_del(&edev->rmv_entry);
1054 			eeh_pe_for_each_dev(tmp_pe, edev, tmp) {
1055 				edev->mode &= ~EEH_DEV_NO_HANDLER;
1056 				edev->in_error = false;
1113 		eeh_pe_for_each_dev(tmp_pe, edev, tmp)
1114 			eeh_clear_slot_attention(edev->pdev);
1129 	struct eeh_dev *edev, *tmp_edev;
1192 				eeh_pe_for_each_dev(tmp_pe, edev, tmp_edev)
1193 					edev->mode &= ~EEH_DEV_NO_HANDLER;