26 	struct pnv_php_slot	*php_slot;  member
37 static void pnv_php_disable_irq(struct pnv_php_slot *php_slot,  in pnv_php_disable_irq()  argument
40 	struct pci_dev *pdev = php_slot->pdev;  in pnv_php_disable_irq()
41 	int irq = php_slot->irq;  in pnv_php_disable_irq()
44 	if (php_slot->irq > 0) {  in pnv_php_disable_irq()
51 		free_irq(php_slot->irq, php_slot);  in pnv_php_disable_irq()
52 		php_slot->irq = 0;  in pnv_php_disable_irq()
55 	if (php_slot->wq) {  in pnv_php_disable_irq()
56 		destroy_workqueue(php_slot->wq);  in pnv_php_disable_irq()
57 		php_slot->wq = NULL;  in pnv_php_disable_irq()
72 	struct pnv_php_slot *php_slot = container_of(kref,  in pnv_php_free_slot()  local
75 	WARN_ON(!list_empty(&php_slot->children));  in pnv_php_free_slot()
76 	pnv_php_disable_irq(php_slot, false);  in pnv_php_free_slot()
77 	kfree(php_slot->name);  in pnv_php_free_slot()
78 	kfree(php_slot);  in pnv_php_free_slot()
81 static inline void pnv_php_put_slot(struct pnv_php_slot *php_slot)  in pnv_php_put_slot()  argument
84 	if (!php_slot)  in pnv_php_put_slot()
87 	kref_put(&php_slot->kref, pnv_php_free_slot);  in pnv_php_put_slot()
91 					  struct pnv_php_slot *php_slot)  in pnv_php_match()  argument
95 	if (php_slot->dn == dn) {  in pnv_php_match()
96 		kref_get(&php_slot->kref);  in pnv_php_match()
97 		return php_slot;  in pnv_php_match()
100 	list_for_each_entry(tmp, &php_slot->children, link) {  in pnv_php_match()
111 	struct pnv_php_slot *php_slot, *tmp;  in pnv_php_find_slot()  local
116 		php_slot = pnv_php_match(dn, tmp);  in pnv_php_find_slot()
117 		if (php_slot) {  in pnv_php_find_slot()
119 			return php_slot;  in pnv_php_find_slot()
166 static void pnv_php_rmv_devtree(struct pnv_php_slot *php_slot)  in pnv_php_rmv_devtree()  argument
168 	pnv_php_rmv_pdns(php_slot->dn);  in pnv_php_rmv_devtree()
174 	if (php_slot->fdt)  in pnv_php_rmv_devtree()
175 		of_changeset_destroy(&php_slot->ocs);  in pnv_php_rmv_devtree()
176 	pnv_php_detach_device_nodes(php_slot->dn);  in pnv_php_rmv_devtree()
178 	if (php_slot->fdt) {  in pnv_php_rmv_devtree()
179 		kfree(php_slot->dt);  in pnv_php_rmv_devtree()
180 		kfree(php_slot->fdt);  in pnv_php_rmv_devtree()
181 		php_slot->dt        = NULL;  in pnv_php_rmv_devtree()
182 		php_slot->dn->child = NULL;  in pnv_php_rmv_devtree()
183 		php_slot->fdt       = NULL;  in pnv_php_rmv_devtree()
254 static int pnv_php_add_devtree(struct pnv_php_slot *php_slot)  in pnv_php_add_devtree()  argument
269 	ret = pnv_pci_get_device_tree(php_slot->dn->phandle, fdt1, 0x10000);  in pnv_php_add_devtree()
271 		SLOT_WARN(php_slot, "Error %d getting FDT blob\n", ret);  in pnv_php_add_devtree()
282 	dt = of_fdt_unflatten_tree(fdt, php_slot->dn, NULL);  in pnv_php_add_devtree()
285 		SLOT_WARN(php_slot, "Cannot unflatten FDT\n");  in pnv_php_add_devtree()
290 	of_changeset_init(&php_slot->ocs);  in pnv_php_add_devtree()
291 	pnv_php_reverse_nodes(php_slot->dn);  in pnv_php_add_devtree()
292 	ret = pnv_php_populate_changeset(&php_slot->ocs, php_slot->dn);  in pnv_php_add_devtree()
294 		pnv_php_reverse_nodes(php_slot->dn);  in pnv_php_add_devtree()
295 		SLOT_WARN(php_slot, "Error %d populating changeset\n",  in pnv_php_add_devtree()
300 	php_slot->dn->child = NULL;  in pnv_php_add_devtree()
301 	ret = of_changeset_apply(&php_slot->ocs);  in pnv_php_add_devtree()
303 		SLOT_WARN(php_slot, "Error %d applying changeset\n", ret);  in pnv_php_add_devtree()
308 	pnv_php_add_pdns(php_slot);  in pnv_php_add_devtree()
309 	php_slot->fdt = fdt;  in pnv_php_add_devtree()
310 	php_slot->dt  = dt;  in pnv_php_add_devtree()
315 	of_changeset_destroy(&php_slot->ocs);  in pnv_php_add_devtree()
318 	php_slot->dn->child = NULL;  in pnv_php_add_devtree()
335 	struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);  in pnv_php_set_slot_power_state()  local
339 	ret = pnv_pci_set_power_state(php_slot->id, state, &msg);  in pnv_php_set_slot_power_state()
341 		if (be64_to_cpu(msg.params[1]) != php_slot->dn->phandle	||  in pnv_php_set_slot_power_state()
343 			SLOT_WARN(php_slot, "Wrong msg (%lld, %lld, %lld)\n",  in pnv_php_set_slot_power_state()
358 		pnv_php_rmv_devtree(php_slot);  in pnv_php_set_slot_power_state()
360 		ret = pnv_php_add_devtree(php_slot);  in pnv_php_set_slot_power_state()
365 	SLOT_WARN(php_slot, "Error %d powering %s\n",  in pnv_php_set_slot_power_state()
373 	struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);  in pnv_php_get_power_state()  local
382 	ret = pnv_pci_get_power_state(php_slot->id, &power_state);  in pnv_php_get_power_state()
384 		SLOT_WARN(php_slot, "Error %d getting power status\n",  in pnv_php_get_power_state()
395 	struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);  in pnv_php_get_adapter_state()  local
403 	ret = pnv_pci_get_presence_state(php_slot->id, &presence);  in pnv_php_get_adapter_state()
408 		SLOT_WARN(php_slot, "Error %d getting presence\n", ret);  in pnv_php_get_adapter_state()
416 	struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);  in pnv_php_get_attention_state()  local
418 	*state = php_slot->attention_state;  in pnv_php_get_attention_state()
424 	struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);  in pnv_php_set_attention_state()  local
425 	struct pci_dev *bridge = php_slot->pdev;  in pnv_php_set_attention_state()
428 	php_slot->attention_state = state;  in pnv_php_set_attention_state()
444 static int pnv_php_enable(struct pnv_php_slot *php_slot, bool rescan)  in pnv_php_enable()  argument
446 	struct hotplug_slot *slot = &php_slot->slot;  in pnv_php_enable()
452 	if (php_slot->state != PNV_PHP_STATE_REGISTERED)  in pnv_php_enable()
467 		if (!php_slot->power_state_check) {  in pnv_php_enable()
468 			php_slot->power_state_check = true;  in pnv_php_enable()
486 	if (!php_slot->power_state_check) {  in pnv_php_enable()
487 		php_slot->power_state_check = true;  in pnv_php_enable()
514 			pci_hp_add_devices(php_slot->bus);  in pnv_php_enable()
519 		php_slot->state = PNV_PHP_STATE_POPULATED;  in pnv_php_enable()
521 			pnv_php_register(php_slot->dn);  in pnv_php_enable()
523 		php_slot->state = PNV_PHP_STATE_POPULATED;  in pnv_php_enable()
531 	struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);  in pnv_php_reset_slot()  local
532 	struct pci_dev *bridge = php_slot->pdev;  in pnv_php_reset_slot()
544 	if (php_slot->irq > 0)  in pnv_php_reset_slot()
545 		disable_irq(php_slot->irq);  in pnv_php_reset_slot()
550 	pcie_capability_read_word(php_slot->pdev, PCI_EXP_SLTSTA, &sts);  in pnv_php_reset_slot()
552 	pcie_capability_write_word(php_slot->pdev, PCI_EXP_SLTSTA, sts);  in pnv_php_reset_slot()
554 	if (php_slot->irq > 0)  in pnv_php_reset_slot()
555 		enable_irq(php_slot->irq);  in pnv_php_reset_slot()
562 	struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);  in pnv_php_enable_slot()  local
564 	return pnv_php_enable(php_slot, true);  in pnv_php_enable_slot()
569 	struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);  in pnv_php_disable_slot()  local
577 	if (php_slot->state != PNV_PHP_STATE_POPULATED &&  in pnv_php_disable_slot()
578 	    php_slot->state != PNV_PHP_STATE_REGISTERED)  in pnv_php_disable_slot()
583 	pci_hp_remove_devices(php_slot->bus);  in pnv_php_disable_slot()
587 	pnv_php_unregister(php_slot->dn);  in pnv_php_disable_slot()
592 	php_slot->state = PNV_PHP_STATE_REGISTERED;  in pnv_php_disable_slot()
606 static void pnv_php_release(struct pnv_php_slot *php_slot)  in pnv_php_release()  argument
612 	list_del(&php_slot->link);  in pnv_php_release()
616 	pnv_php_put_slot(php_slot);  in pnv_php_release()
617 	pnv_php_put_slot(php_slot->parent);  in pnv_php_release()
622 	struct pnv_php_slot *php_slot;  in pnv_php_alloc_slot()  local
639 	php_slot = kzalloc(sizeof(*php_slot), GFP_KERNEL);  in pnv_php_alloc_slot()
640 	if (!php_slot)  in pnv_php_alloc_slot()
643 	php_slot->name = kstrdup(label, GFP_KERNEL);  in pnv_php_alloc_slot()
644 	if (!php_slot->name) {  in pnv_php_alloc_slot()
645 		kfree(php_slot);  in pnv_php_alloc_slot()
650 		php_slot->slot_no = PCI_SLOT(PCI_DN(dn->child)->devfn);  in pnv_php_alloc_slot()
652 		php_slot->slot_no = -1;   /* Placeholder slot */  in pnv_php_alloc_slot()
654 	kref_init(&php_slot->kref);  in pnv_php_alloc_slot()
655 	php_slot->state	                = PNV_PHP_STATE_INITIALIZED;  in pnv_php_alloc_slot()
656 	php_slot->dn	                = dn;  in pnv_php_alloc_slot()
657 	php_slot->pdev	                = bus->self;  in pnv_php_alloc_slot()
658 	php_slot->bus	                = bus;  in pnv_php_alloc_slot()
659 	php_slot->id	                = id;  in pnv_php_alloc_slot()
660 	php_slot->power_state_check     = false;  in pnv_php_alloc_slot()
661 	php_slot->slot.ops              = &php_slot_ops;  in pnv_php_alloc_slot()
663 	INIT_LIST_HEAD(&php_slot->children);  in pnv_php_alloc_slot()
664 	INIT_LIST_HEAD(&php_slot->link);  in pnv_php_alloc_slot()
666 	return php_slot;  in pnv_php_alloc_slot()
669 static int pnv_php_register_slot(struct pnv_php_slot *php_slot)  in pnv_php_register_slot()  argument
672 	struct device_node *dn = php_slot->dn;  in pnv_php_register_slot()
677 	parent = pnv_php_find_slot(php_slot->dn);  in pnv_php_register_slot()
684 	ret = pci_hp_register(&php_slot->slot, php_slot->bus,  in pnv_php_register_slot()
685 			      php_slot->slot_no, php_slot->name);  in pnv_php_register_slot()
687 		SLOT_WARN(php_slot, "Error %d registering slot\n", ret);  in pnv_php_register_slot()
708 	php_slot->parent = parent;  in pnv_php_register_slot()
710 		list_add_tail(&php_slot->link, &parent->children);  in pnv_php_register_slot()
712 		list_add_tail(&php_slot->link, &pnv_php_slot_list);  in pnv_php_register_slot()
715 	php_slot->state = PNV_PHP_STATE_REGISTERED;  in pnv_php_register_slot()
719 static int pnv_php_enable_msix(struct pnv_php_slot *php_slot)  in pnv_php_enable_msix()  argument
721 	struct pci_dev *pdev = php_slot->pdev;  in pnv_php_enable_msix()
740 		SLOT_WARN(php_slot, "Error %d enabling MSIx\n", ret);  in pnv_php_enable_msix()
751 	struct pnv_php_slot *php_slot = event->php_slot;  in pnv_php_event_handler()  local
754 		pnv_php_enable_slot(&php_slot->slot);  in pnv_php_event_handler()
756 		pnv_php_disable_slot(&php_slot->slot);  in pnv_php_event_handler()
763 	struct pnv_php_slot *php_slot = data;  in pnv_php_interrupt()  local
764 	struct pci_dev *pchild, *pdev = php_slot->pdev;  in pnv_php_interrupt()
779 			php_slot->name,  in pnv_php_interrupt()
786 	} else if (!(php_slot->flags & PNV_PHP_FLAG_BROKEN_PDC) &&  in pnv_php_interrupt()
788 		ret = pnv_pci_get_presence_state(php_slot->id, &presence);  in pnv_php_interrupt()
790 			SLOT_WARN(php_slot,  in pnv_php_interrupt()
792 				  php_slot->name, ret, sts);  in pnv_php_interrupt()
798 		pci_dbg(pdev, "PCI slot [%s]: Spurious IRQ?\n", php_slot->name);  in pnv_php_interrupt()
804 		pchild = list_first_entry_or_null(&php_slot->bus->devices,  in pnv_php_interrupt()
822 		SLOT_WARN(php_slot,  in pnv_php_interrupt()
824 			  php_slot->name, sts);  in pnv_php_interrupt()
829 		 php_slot->name, added ? "added" : "removed", irq);  in pnv_php_interrupt()
832 	event->php_slot = php_slot;  in pnv_php_interrupt()
833 	queue_work(php_slot->wq, &event->work);  in pnv_php_interrupt()
838 static void pnv_php_init_irq(struct pnv_php_slot *php_slot, int irq)  in pnv_php_init_irq()  argument
840 	struct pci_dev *pdev = php_slot->pdev;  in pnv_php_init_irq()
846 	php_slot->wq = alloc_workqueue("pciehp-%s", 0, 0, php_slot->name);  in pnv_php_init_irq()
847 	if (!php_slot->wq) {  in pnv_php_init_irq()
848 		SLOT_WARN(php_slot, "Cannot alloc workqueue\n");  in pnv_php_init_irq()
849 		pnv_php_disable_irq(php_slot, true);  in pnv_php_init_irq()
854 	ret = of_property_read_u32(php_slot->dn, "ibm,slot-broken-pdc",  in pnv_php_init_irq()
857 		php_slot->flags |= PNV_PHP_FLAG_BROKEN_PDC;  in pnv_php_init_irq()
861 	if (php_slot->flags & PNV_PHP_FLAG_BROKEN_PDC)  in pnv_php_init_irq()
869 			  php_slot->name, php_slot);  in pnv_php_init_irq()
871 		pnv_php_disable_irq(php_slot, true);  in pnv_php_init_irq()
872 		SLOT_WARN(php_slot, "Error %d enabling IRQ %d\n", ret, irq);  in pnv_php_init_irq()
878 	if (php_slot->flags & PNV_PHP_FLAG_BROKEN_PDC) {  in pnv_php_init_irq()
890 	php_slot->irq = irq;  in pnv_php_init_irq()
893 static void pnv_php_enable_irq(struct pnv_php_slot *php_slot)  in pnv_php_enable_irq()  argument
895 	struct pci_dev *pdev = php_slot->pdev;  in pnv_php_enable_irq()
908 		SLOT_WARN(php_slot, "Error %d enabling device\n", ret);  in pnv_php_enable_irq()
915 	irq = pnv_php_enable_msix(php_slot);  in pnv_php_enable_irq()
917 		pnv_php_init_irq(php_slot, irq);  in pnv_php_enable_irq()
928 		pnv_php_init_irq(php_slot, irq);  in pnv_php_enable_irq()
934 	struct pnv_php_slot *php_slot;  in pnv_php_register_one()  local
947 	php_slot = pnv_php_alloc_slot(dn);  in pnv_php_register_one()
948 	if (!php_slot)  in pnv_php_register_one()
951 	ret = pnv_php_register_slot(php_slot);  in pnv_php_register_one()
955 	ret = pnv_php_enable(php_slot, false);  in pnv_php_register_one()
962 		pnv_php_enable_irq(php_slot);  in pnv_php_register_one()
967 	pnv_php_unregister_one(php_slot->dn);  in pnv_php_register_one()
969 	pnv_php_put_slot(php_slot);  in pnv_php_register_one()
989 	struct pnv_php_slot *php_slot;  in pnv_php_unregister_one()  local
991 	php_slot = pnv_php_find_slot(dn);  in pnv_php_unregister_one()
992 	if (!php_slot)  in pnv_php_unregister_one()
995 	php_slot->state = PNV_PHP_STATE_OFFLINE;  in pnv_php_unregister_one()
996 	pci_hp_deregister(&php_slot->slot);  in pnv_php_unregister_one()
997 	pnv_php_release(php_slot);  in pnv_php_unregister_one()
998 	pnv_php_put_slot(php_slot);  in pnv_php_unregister_one()