1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2024-2025 ARM Limited, All Rights Reserved.
15 #include <linux/irqchip/arm-gic-v5.h>
24 	return readl_relaxed(iwb_node->iwb_base + reg_offset);  in iwb_readl_relaxed()
30 	writel_relaxed(val, iwb_node->iwb_base + reg_offset);  in iwb_writel_relaxed()
35 	return gicv5_wait_for_op_atomic(iwb_node->iwb_base, GICV5_IWB_WENABLE_STATUSR,  in gicv5_iwb_wait_for_wenabler()
46 	if (n >= iwb_node->nr_regs) {  in __gicv5_iwb_set_wire_enable()
48 		return -EINVAL;  in __gicv5_iwb_set_wire_enable()
81 	gicv5_iwb_disable_wire(iwb_node, d->hwirq);  in gicv5_iwb_irq_disable()
89 	gicv5_iwb_enable_wire(iwb_node, d->hwirq);  in gicv5_iwb_irq_enable()
99 	iwb_wire = d->hwirq;  in gicv5_iwb_set_type()
103 	if (n >= iwb_node->nr_regs) {  in gicv5_iwb_set_type()
105 		return -EINVAL;  in gicv5_iwb_set_type()
121 		return -EINVAL;  in gicv5_iwb_set_type()
131 	alloc_info->desc = desc;  in gicv5_iwb_domain_set_desc()
132 	alloc_info->hwirq = (u32)desc->data.icookie.value;  in gicv5_iwb_domain_set_desc()
139 	if (!is_of_node(fwspec->fwnode))  in gicv5_iwb_irq_domain_translate()
140 		return -EINVAL;  in gicv5_iwb_irq_domain_translate()
142 	if (fwspec->param_count < 2)  in gicv5_iwb_irq_domain_translate()
143 		return -EINVAL;  in gicv5_iwb_irq_domain_translate()
149 	*hwirq = fwspec->param[0];  in gicv5_iwb_irq_domain_translate()
150 	*type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;  in gicv5_iwb_irq_domain_translate()
159 		.name			= "GICv5-IWB",
193 	if (WARN_ON_ONCE(!dev->msi.domain))  in gicv5_iwb_create_device_domain()
211 		return ERR_PTR(-ENOMEM);  in gicv5_iwb_init_bases()
213 	iwb_node->iwb_base = iwb_base;  in gicv5_iwb_init_bases()
220 		dev_err(&pdev->dev, "IWB must be enabled in firmware\n");  in gicv5_iwb_init_bases()
221 		return ERR_PTR(-EINVAL);  in gicv5_iwb_init_bases()
224 	iwb_node->nr_regs = FIELD_GET(GICV5_IWB_IDR0_IW_RANGE, idr0) + 1;  in gicv5_iwb_init_bases()
226 	for (n = 0; n < iwb_node->nr_regs; n++)  in gicv5_iwb_init_bases()
233 	if (!gicv5_iwb_create_device_domain(&pdev->dev, nr_wires, iwb_node))  in gicv5_iwb_init_bases()
234 		return ERR_PTR(-ENOMEM);  in gicv5_iwb_init_bases()
247 		return -EINVAL;  in gicv5_iwb_device_probe()
249 	iwb_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));  in gicv5_iwb_device_probe()
251 		dev_err(&pdev->dev, "failed to ioremap %pR\n", res);  in gicv5_iwb_device_probe()
252 		return -ENOMEM;  in gicv5_iwb_device_probe()
263 	{ .compatible = "arm,gic-v5-iwb" },