1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright (C) 2013-2015 ARM Limited, All Rights Reserved.
11 #include "irq-gic-its-msi-parent.h"
12 #include <linux/irqchip/irq-msi-lib.h>
27 	ret = of_property_match_string(msi_node, "reg-names", "ns-translate");  in its_translate_frame_address()
68 		return -EINVAL;  in its_pci_msi_prepare()
74 	 * Also tell the ITS that the signalling will come from a proxy  in its_pci_msi_prepare()
79 		if (alias_dev->subordinate)  in its_pci_msi_prepare()
80 			pci_walk_bus(alias_dev->subordinate,  in its_pci_msi_prepare()
82 		info->flags |= MSI_ALLOC_FLAGS_PROXY_DEVICE;  in its_pci_msi_prepare()
85 	/* ITS specific DeviceID, as the core ITS ignores dev. */  in its_pci_msi_prepare()
86 	info->scratchpad[0].ul = pci_msi_domain_get_msi_rid(domain->parent, pdev);  in its_pci_msi_prepare()
96 	if (!info->scratchpad[0].ul)  in its_pci_msi_prepare()
100 	msi_info = msi_get_domain_info(domain->parent);  in its_pci_msi_prepare()
101 	return msi_info->ops->msi_prepare(domain->parent, dev, nvec, info);  in its_pci_msi_prepare()
115 		return -EINVAL;  in its_v5_pci_msi_prepare()
121 		return -ENODEV;  in its_v5_pci_msi_prepare()
125 		return -ENODEV;  in its_v5_pci_msi_prepare()
129 	/* ITS specific DeviceID */  in its_v5_pci_msi_prepare()
130 	info->scratchpad[0].ul = rid;  in its_v5_pci_msi_prepare()
131 	/* ITS translate frame physical address */  in its_v5_pci_msi_prepare()
132 	info->scratchpad[1].ul = pa;  in its_v5_pci_msi_prepare()
137 	msi_info = msi_get_domain_info(domain->parent);  in its_v5_pci_msi_prepare()
138 	return msi_info->ops->msi_prepare(domain->parent, dev, nvec, info);  in its_v5_pci_msi_prepare()
150 	/* Suck the DeviceID out of the msi-parent property */  in of_pmsi_get_dev_id()
154 		ret = of_parse_phandle_with_args(dev->of_node,  in of_pmsi_get_dev_id()
155 						 "msi-parent", "#msi-cells",  in of_pmsi_get_dev_id()
159 				return -EINVAL;  in of_pmsi_get_dev_id()
169 		ret = of_map_id(dev->of_node, dev->id, "msi-map", "msi-map-mask", &np, dev_id);  in of_pmsi_get_dev_id()
182 	 * Retrieve the DeviceID and the ITS translate frame node pointer  in of_v5_pmsi_get_msi_info()
183 	 * out of the msi-parent property.  in of_v5_pmsi_get_msi_info()
188 		ret = of_parse_phandle_with_args(dev->of_node,  in of_v5_pmsi_get_msi_info()
189 						 "msi-parent", "#msi-cells",  in of_v5_pmsi_get_msi_info()
196 		 * ITS translate frames).  in of_v5_pmsi_get_msi_info()
198 		if (args.np->parent == irq_domain_get_of_node(domain)) {  in of_v5_pmsi_get_msi_info()
200 				return -EINVAL;  in of_v5_pmsi_get_msi_info()
205 				return -ENODEV;  in of_v5_pmsi_get_msi_info()
214 		ret = of_map_id(dev->of_node, dev->id, "msi-map", "msi-map-mask", &np, dev_id);  in of_v5_pmsi_get_msi_info()
226 	return -1;  in iort_pmsi_get_dev_id()
236 	if (dev->of_node)  in its_pmsi_prepare()
237 		ret = of_pmsi_get_dev_id(domain->parent, dev, &dev_id);  in its_pmsi_prepare()
243 	/* ITS specific DeviceID, as the core ITS ignores dev. */  in its_pmsi_prepare()
244 	info->scratchpad[0].ul = dev_id;  in its_pmsi_prepare()
249 	msi_info = msi_get_domain_info(domain->parent);  in its_pmsi_prepare()
250 	return msi_info->ops->msi_prepare(domain->parent,  in its_pmsi_prepare()
262 	if (!dev->of_node)  in its_v5_pmsi_prepare()
263 		return -ENODEV;  in its_v5_pmsi_prepare()
265 	ret = of_v5_pmsi_get_msi_info(domain->parent, dev, &dev_id, &pa);  in its_v5_pmsi_prepare()
269 	/* ITS specific DeviceID */  in its_v5_pmsi_prepare()
270 	info->scratchpad[0].ul = dev_id;  in its_v5_pmsi_prepare()
271 	/* ITS translate frame physical address */  in its_v5_pmsi_prepare()
272 	info->scratchpad[1].ul = pa;  in its_v5_pmsi_prepare()
277 	msi_info = msi_get_domain_info(domain->parent);  in its_v5_pmsi_prepare()
278 	return msi_info->ops->msi_prepare(domain->parent, dev, nvec, info);  in its_v5_pmsi_prepare()
285 	msi_info = msi_get_domain_info(domain->parent);  in its_msi_teardown()
286 	msi_info->ops->msi_teardown(domain->parent, info);  in its_msi_teardown()
295 	switch(info->bus_token) {  in its_init_dev_msi_info()
301 		 * support for dynamic post-enable MSI-X allocations  in its_init_dev_msi_info()
304 		 * time via info->hwsize.  in its_init_dev_msi_info()
306 		 * That should work perfectly fine for MSI/MSI-X but needs  in its_init_dev_msi_info()
311 		info->ops->msi_prepare = its_pci_msi_prepare;  in its_init_dev_msi_info()
312 		info->ops->msi_teardown = its_msi_teardown;  in its_init_dev_msi_info()
320 		info->ops->msi_prepare = its_pmsi_prepare;  in its_init_dev_msi_info()
321 		info->ops->msi_teardown = its_msi_teardown;  in its_init_dev_msi_info()
338 	switch (info->bus_token) {  in its_v5_init_dev_msi_info()
341 		info->ops->msi_prepare = its_v5_pci_msi_prepare;  in its_v5_init_dev_msi_info()
342 		info->ops->msi_teardown = its_msi_teardown;  in its_v5_init_dev_msi_info()
346 		info->ops->msi_prepare = its_v5_pmsi_prepare;  in its_v5_init_dev_msi_info()
347 		info->ops->msi_teardown = its_msi_teardown;  in its_v5_init_dev_msi_info()
364 	.prefix			= "ITS-",
374 	.prefix			= "ITS-v5-",