1 // SPDX-License-Identifier: GPL-2.0
5  * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
8 #define pr_fmt(fmt) "eiointc: " fmt
82 		/* EIO node 0 is in charge of inter-node interrupt dispatch */  in eiointc_set_irq_route()
97 	struct eiointc_priv *priv = d->domain->host_data;  in eiointc_set_irq_affinity()
102 	cpumask_and(&intersect_affinity, &intersect_affinity, &priv->cpuspan_map);  in eiointc_set_irq_affinity()
106 		return -EINVAL;  in eiointc_set_irq_affinity()
110 	vector = d->hwirq;  in eiointc_set_irq_affinity()
115 			0x0, priv->node * CORES_PER_EIO_NODE);  in eiointc_set_irq_affinity()
118 	eiointc_set_irq_route(vector, cpu, priv->node, &priv->node_map);  in eiointc_set_irq_affinity()
122 			0x0, priv->node * CORES_PER_EIO_NODE);  in eiointc_set_irq_affinity()
136 		if (node_isset(node, eiointc_priv[i]->node_map))  in eiointc_index()
140 	return -1;  in eiointc_index()
152 		return -1;  in eiointc_router_init()
158 		for (i = 0; i < eiointc_priv[0]->vec_count / 32; i++) {  in eiointc_router_init()
163 		for (i = 0; i < eiointc_priv[0]->vec_count / 32 / 4; i++) {  in eiointc_router_init()
169 		for (i = 0; i < eiointc_priv[0]->vec_count / 4; i++) {  in eiointc_router_init()
170 			/* Route to Node-0 Core-0 */  in eiointc_router_init()
174 				bit = (eiointc_priv[index]->node << 4) | 1;  in eiointc_router_init()
180 		for (i = 0; i < eiointc_priv[0]->vec_count / 32; i++) {  in eiointc_router_init()
200 	for (i = 0; i < eiointc_priv[0]->vec_count / VEC_COUNT_PER_REG; i++) {  in eiointc_irq_dispatch()
207 			generic_handle_domain_irq(priv->eiointc_domain, irq);  in eiointc_irq_dispatch()
232 	.name			= "EIOINTC",
245 	struct eiointc_priv *priv = domain->host_data;  in eiointc_domain_alloc()
315 		for (j = 0; j < eiointc_priv[0]->vec_count; j++) {  in eiointc_resume()
316 			desc = irq_resolve_mapping(eiointc_priv[i]->eiointc_domain, j);  in eiointc_resume()
317 			if (desc && desc->handle_irq && desc->handle_irq != handle_bad_irq) {  in eiointc_resume()
318 				raw_spin_lock(&desc->lock);  in eiointc_resume()
319 				irq_data = irq_domain_get_irq_data(eiointc_priv[i]->eiointc_domain, irq_desc_get_irq(desc));  in eiointc_resume()
320 				eiointc_set_irq_affinity(irq_data, irq_data->common->affinity, 0);  in eiointc_resume()
321 				raw_spin_unlock(&desc->lock);  in eiointc_resume()
336 	unsigned int node = (pchpic_entry->address >> 44) & 0xf;  in pch_pic_parse_madt()
353 		node = early_cpu_to_node(eiointc_priv[nr_pics - 1]->node * CORES_PER_EIO_NODE);  in pch_msi_parse_madt()
355 		node = eiointc_priv[nr_pics - 1]->node;  in pch_msi_parse_madt()
385 	node_map = node_map ? node_map : -1ULL;  in eiointc_init()
388 			node_set(cpu_to_eio_node(i), priv->node_map);  in eiointc_init()
389 			cpumask_or(&priv->cpuspan_map, &priv->cpuspan_map,  in eiointc_init()
394 	priv->eiointc_domain = irq_domain_create_linear(priv->domain_handle,  in eiointc_init()
395 							priv->vec_count,  in eiointc_init()
398 	if (!priv->eiointc_domain) {  in eiointc_init()
399 		pr_err("loongson-extioi: cannot add IRQ domain\n");  in eiointc_init()
400 		return -ENOMEM;  in eiointc_init()
426 		return -ENOMEM;  in eiointc_acpi_init()
428 	priv->domain_handle = irq_domain_alloc_named_id_fwnode("EIOPIC",  in eiointc_acpi_init()
429 							       acpi_eiointc->node);  in eiointc_acpi_init()
430 	if (!priv->domain_handle) {  in eiointc_acpi_init()
435 	priv->vec_count = VEC_COUNT;  in eiointc_acpi_init()
436 	priv->node = acpi_eiointc->node;  in eiointc_acpi_init()
438 	parent_irq = irq_create_mapping(parent, acpi_eiointc->cascade);  in eiointc_acpi_init()
440 	ret = eiointc_init(priv, parent_irq, acpi_eiointc->node_map);  in eiointc_acpi_init()
445 		node = early_cpu_to_node(acpi_eiointc->node * CORES_PER_EIO_NODE);  in eiointc_acpi_init()
447 		node = acpi_eiointc->node;  in eiointc_acpi_init()
448 	acpi_set_vec_parent(node, priv->eiointc_domain, pch_group);  in eiointc_acpi_init()
449 	acpi_set_vec_parent(node, priv->eiointc_domain, msi_group);  in eiointc_acpi_init()
458 	irq_domain_free_fwnode(priv->domain_handle);  in eiointc_acpi_init()
459 	priv->domain_handle = NULL;  in eiointc_acpi_init()
463 	return -ENOMEM;  in eiointc_acpi_init()
474 		return -ENOMEM;  in eiointc_of_init()
478 		ret = -ENODEV;  in eiointc_of_init()
487 	 * In particular, the number of devices supported by the LS2K0500  in eiointc_of_init()
490 	if (of_device_is_compatible(of_node, "loongson,ls2k0500-eiointc"))  in eiointc_of_init()
491 		priv->vec_count = 128;  in eiointc_of_init()
493 		priv->vec_count = VEC_COUNT;  in eiointc_of_init()
495 	priv->node = 0;  in eiointc_of_init()
496 	priv->domain_handle = of_node_to_fwnode(of_node);  in eiointc_of_init()
509 IRQCHIP_DECLARE(loongson_ls2k0500_eiointc, "loongson,ls2k0500-eiointc", eiointc_of_init);
510 IRQCHIP_DECLARE(loongson_ls2k2000_eiointc, "loongson,ls2k2000-eiointc", eiointc_of_init);