1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2013-2015 ARM Limited, All Rights Reserved.
9 #include <linux/msi.h>
27 	.name			= "ITS-MSI",
36 	int msi, msix, *count = data;  in its_pci_msi_vec_count()  local
38 	msi = max(pci_msi_vec_count(pdev), 0);  in its_pci_msi_vec_count()
40 	*count += max(msi, msix);  in its_pci_msi_vec_count()
62 		return -EINVAL;  in its_pci_msi_prepare()
64 	msi_info = msi_get_domain_info(domain->parent);  in its_pci_msi_prepare()
72 	if (alias_dev != pdev && alias_dev->subordinate)  in its_pci_msi_prepare()
73 		pci_walk_bus(alias_dev->subordinate, its_pci_msi_vec_count,  in its_pci_msi_prepare()
77 	info->scratchpad[0].ul = pci_msi_domain_get_msi_rid(domain, pdev);  in its_pci_msi_prepare()
87 	if (!info->scratchpad[0].ul)  in its_pci_msi_prepare()
90 	return msi_info->ops->msi_prepare(domain->parent, dev, nvec, info);  in its_pci_msi_prepare()
105 	{	.compatible	= "arm,gic-v3-its",	},
112 	struct irq_domain *parent;  in its_pci_msi_init_one()  local
114 	parent = irq_find_matching_fwnode(handle, DOMAIN_BUS_NEXUS);  in its_pci_msi_init_one()
115 	if (!parent || !msi_get_domain_info(parent)) {  in its_pci_msi_init_one()
117 		return -ENXIO;  in its_pci_msi_init_one()
121 				       parent)) {  in its_pci_msi_init_one()
123 		return -ENOMEM;  in its_pci_msi_init_one()
137 		if (!of_property_read_bool(np, "msi-controller"))  in its_pci_of_msi_init()
140 		if (its_pci_msi_init_one(of_node_to_fwnode(np), np->full_name))  in its_pci_of_msi_init()
143 		pr_info("PCI/MSI: %pOF domain created\n", np);  in its_pci_of_msi_init()
158 	int err = -ENXIO;  in its_pci_msi_parse_madt()
162 			      (long)its_entry->base_address);  in its_pci_msi_parse_madt()
163 	dom_handle = iort_find_domain_token(its_entry->translation_id);  in its_pci_msi_parse_madt()
171 		pr_info("PCI/MSI: %s domain created\n", node_name);  in its_pci_msi_parse_madt()