1 // SPDX-License-Identifier: GPL-2.0
5  * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
8 #define pr_fmt(fmt) "eiointc: " fmt
20 #include "irq-loongson.h"
85 		/* EIO node 0 is in charge of inter-node interrupt dispatch */  in eiointc_set_irq_route()
99 	struct eiointc_priv *priv = d->domain->host_data;  in eiointc_set_irq_affinity()
103 	cpu = cpumask_first_and_and(&priv->cpuspan_map, affinity, cpu_online_mask);  in eiointc_set_irq_affinity()
106 		return -EINVAL;  in eiointc_set_irq_affinity()
109 	vector = d->hwirq;  in eiointc_set_irq_affinity()
114 			0x0, priv->node * CORES_PER_EIO_NODE);  in eiointc_set_irq_affinity()
117 	eiointc_set_irq_route(vector, cpu, priv->node, &priv->node_map);  in eiointc_set_irq_affinity()
121 			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()
213 			generic_handle_domain_irq(priv->eiointc_domain, irq);  in eiointc_irq_dispatch()
238 	.name			= "EIOINTC",
253 	struct eiointc_priv *priv = domain->host_data;  in eiointc_domain_alloc()
328 	unsigned int node = (pchpic_entry->address >> 44) & 0xf;  in pch_pic_parse_madt()
345 		node = early_cpu_to_node(eiointc_priv[nr_pics - 1]->node * CORES_PER_EIO_NODE);  in pch_msi_parse_madt()
347 		node = eiointc_priv[nr_pics - 1]->node;  in pch_msi_parse_madt()
380 	node_map = node_map ? node_map : -1ULL;  in eiointc_init()
383 			node_set(cpu_to_eio_node(i), priv->node_map);  in eiointc_init()
384 			cpumask_or(&priv->cpuspan_map, &priv->cpuspan_map,  in eiointc_init()
389 	priv->eiointc_domain = irq_domain_create_linear(priv->domain_handle,  in eiointc_init()
390 							priv->vec_count,  in eiointc_init()
393 	if (!priv->eiointc_domain) {  in eiointc_init()
394 		pr_err("loongson-extioi: cannot add IRQ domain\n");  in eiointc_init()
395 		return -ENOMEM;  in eiointc_init()
405 					  "irqchip/loongarch/eiointc:starting",  in eiointc_init()
421 		return -ENOMEM;  in eiointc_acpi_init()
423 	priv->domain_handle = irq_domain_alloc_named_id_fwnode("EIOPIC",  in eiointc_acpi_init()
424 							       acpi_eiointc->node);  in eiointc_acpi_init()
425 	if (!priv->domain_handle) {  in eiointc_acpi_init()
430 	priv->vec_count = VEC_COUNT;  in eiointc_acpi_init()
431 	priv->node = acpi_eiointc->node;  in eiointc_acpi_init()
433 	parent_irq = irq_create_mapping(parent, acpi_eiointc->cascade);  in eiointc_acpi_init()
435 	ret = eiointc_init(priv, parent_irq, acpi_eiointc->node_map);  in eiointc_acpi_init()
440 		node = early_cpu_to_node(acpi_eiointc->node * CORES_PER_EIO_NODE);  in eiointc_acpi_init()
442 		node = acpi_eiointc->node;  in eiointc_acpi_init()
443 	acpi_set_vec_parent(node, priv->eiointc_domain, pch_group);  in eiointc_acpi_init()
444 	acpi_set_vec_parent(node, priv->eiointc_domain, msi_group);  in eiointc_acpi_init()
453 	irq_domain_free_fwnode(priv->domain_handle);  in eiointc_acpi_init()
454 	priv->domain_handle = NULL;  in eiointc_acpi_init()
458 	return -ENOMEM;  in eiointc_acpi_init()
469 		return -ENOMEM;  in eiointc_of_init()
473 		ret = -ENODEV;  in eiointc_of_init()
482 	 * In particular, the number of devices supported by the LS2K0500  in eiointc_of_init()
485 	if (of_device_is_compatible(of_node, "loongson,ls2k0500-eiointc"))  in eiointc_of_init()
486 		priv->vec_count = 128;  in eiointc_of_init()
488 		priv->vec_count = VEC_COUNT;  in eiointc_of_init()
490 	priv->node = 0;  in eiointc_of_init()
491 	priv->domain_handle = of_node_to_fwnode(of_node);  in eiointc_of_init()
504 IRQCHIP_DECLARE(loongson_ls2k0500_eiointc, "loongson,ls2k0500-eiointc", eiointc_of_init);
505 IRQCHIP_DECLARE(loongson_ls2k2000_eiointc, "loongson,ls2k2000-eiointc", eiointc_of_init);