1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2013-2015 ARM Limited, All Rights Reserved.
8 #include <linux/pci.h>
27 	.name			= "ITS-MSI",
54 static int its_pci_msi_prepare(struct irq_domain *domain, struct device *dev,  in its_pci_msi_prepare()  argument
62 		return -EINVAL;  in its_pci_msi_prepare()
64 	msi_info = msi_get_domain_info(domain->parent);  in its_pci_msi_prepare()
75 		if (alias_dev->subordinate)  in its_pci_msi_prepare()
76 			pci_walk_bus(alias_dev->subordinate,  in its_pci_msi_prepare()
78 		info->flags |= MSI_ALLOC_FLAGS_PROXY_DEVICE;  in its_pci_msi_prepare()
82 	info->scratchpad[0].ul = pci_msi_domain_get_msi_rid(domain, pdev);  in its_pci_msi_prepare()
92 	if (!info->scratchpad[0].ul)  in its_pci_msi_prepare()
95 	return msi_info->ops->msi_prepare(domain->parent, dev, nvec, info);  in its_pci_msi_prepare()
110 	{	.compatible	= "arm,gic-v3-its",	},
121 		pr_err("%s: Unable to locate ITS domain\n", name);  in its_pci_msi_init_one()
122 		return -ENXIO;  in its_pci_msi_init_one()
127 		pr_err("%s: Unable to create PCI domain\n", name);  in its_pci_msi_init_one()
128 		return -ENOMEM;  in its_pci_msi_init_one()
142 		if (!of_property_read_bool(np, "msi-controller"))  in its_pci_of_msi_init()
145 		if (its_pci_msi_init_one(of_node_to_fwnode(np), np->full_name))  in its_pci_of_msi_init()
148 		pr_info("PCI/MSI: %pOF domain created\n", np);  in its_pci_of_msi_init()
163 	int err = -ENXIO;  in its_pci_msi_parse_madt()
167 			      (long)its_entry->base_address);  in its_pci_msi_parse_madt()
168 	dom_handle = iort_find_domain_token(its_entry->translation_id);  in its_pci_msi_parse_madt()
170 		pr_err("%s: Unable to locate ITS domain handle\n", node_name);  in its_pci_msi_parse_madt()
176 		pr_info("PCI/MSI: %s domain created\n", node_name);  in its_pci_msi_parse_madt()