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",
35 	int msi, msix, *count = data;  in its_pci_msi_vec_count()  local
37 	msi = max(pci_msi_vec_count(pdev), 0);  in its_pci_msi_vec_count()
39 	*count += max(msi, msix);  in its_pci_msi_vec_count()
61 		return -EINVAL;  in its_pci_msi_prepare()
63 	msi_info = msi_get_domain_info(domain->parent);  in its_pci_msi_prepare()
74 		if (alias_dev->subordinate)  in its_pci_msi_prepare()
75 			pci_walk_bus(alias_dev->subordinate,  in its_pci_msi_prepare()
77 		info->flags |= MSI_ALLOC_FLAGS_PROXY_DEVICE;  in its_pci_msi_prepare()
81 	info->scratchpad[0].ul = pci_msi_domain_get_msi_rid(domain, pdev);  in its_pci_msi_prepare()
91 	if (!info->scratchpad[0].ul)  in its_pci_msi_prepare()
94 	return msi_info->ops->msi_prepare(domain->parent, dev, nvec, info);  in its_pci_msi_prepare()
109 	{	.compatible	= "arm,gic-v3-its",	},
116 	struct irq_domain *parent;  in its_pci_msi_init_one()  local
118 	parent = irq_find_matching_fwnode(handle, DOMAIN_BUS_NEXUS);  in its_pci_msi_init_one()
119 	if (!parent || !msi_get_domain_info(parent)) {  in its_pci_msi_init_one()
121 		return -ENXIO;  in its_pci_msi_init_one()
125 				       parent)) {  in its_pci_msi_init_one()
127 		return -ENOMEM;  in its_pci_msi_init_one()
141 		if (!of_property_read_bool(np, "msi-controller"))  in its_pci_of_msi_init()
144 		if (its_pci_msi_init_one(of_node_to_fwnode(np), np->full_name))  in its_pci_of_msi_init()
147 		pr_info("PCI/MSI: %pOF domain created\n", np);  in its_pci_of_msi_init()
162 	int err = -ENXIO;  in its_pci_msi_parse_madt()
166 			      (long)its_entry->base_address);  in its_pci_msi_parse_madt()
167 	dom_handle = iort_find_domain_token(its_entry->translation_id);  in its_pci_msi_parse_madt()
175 		pr_info("PCI/MSI: %s domain created\n", node_name);  in its_pci_msi_parse_madt()