1 // SPDX-License-Identifier: GPL-2.0-only
22 /* 64 irqs (Pin0-pin63) are reserved for each mbigen chip */
57  * struct mbigen_device - holds the information of mbigen device.
85 	hwirq -= RESERVED_IRQ_PER_MBIGEN_CHIP;  in get_mbigen_vec_reg()
97 	hwirq -= RESERVED_IRQ_PER_MBIGEN_CHIP;  in get_mbigen_type_reg()
118 	void __iomem *base = data->chip_data;  in mbigen_eoi_irq()
121 	get_mbigen_clear_reg(data->hwirq, &mask, &addr);  in mbigen_eoi_irq()
130 	void __iomem *base = data->chip_data;  in mbigen_set_type()
134 		return -EINVAL;  in mbigen_set_type()
136 	get_mbigen_type_reg(data->hwirq, &mask, &addr);  in mbigen_set_type()
152 	void __iomem *base = d->chip_data;  in mbigen_write_msi_msg()
155 	if (!msg->address_lo && !msg->address_hi)  in mbigen_write_msi_msg()
158 	base += get_mbigen_vec_reg(d->hwirq);  in mbigen_write_msi_msg()
162 	val |= (msg->data << IRQ_EVENT_ID_SHIFT);  in mbigen_write_msi_msg()
173 	if (is_of_node(fwspec->fwnode) || is_acpi_device_node(fwspec->fwnode)) {  in mbigen_domain_translate()
174 		if (fwspec->param_count != 2)  in mbigen_domain_translate()
175 			return -EINVAL;  in mbigen_domain_translate()
177 		if ((fwspec->param[0] > MAXIMUM_IRQ_PIN_NUM) ||  in mbigen_domain_translate()
178 			(fwspec->param[0] < RESERVED_IRQ_PER_MBIGEN_CHIP))  in mbigen_domain_translate()
179 			return -EINVAL;  in mbigen_domain_translate()
181 			*hwirq = fwspec->param[0];  in mbigen_domain_translate()
184 		if ((fwspec->param[1] == IRQ_TYPE_EDGE_RISING) ||  in mbigen_domain_translate()
185 			(fwspec->param[1] == IRQ_TYPE_LEVEL_HIGH))  in mbigen_domain_translate()
186 			*type = fwspec->param[1];  in mbigen_domain_translate()
188 			return -EINVAL;  in mbigen_domain_translate()
192 	return -EINVAL;  in mbigen_domain_translate()
197 	arg->desc = desc;  in mbigen_domain_set_desc()
198 	arg->hwirq = (u32)desc->data.icookie.value;  in mbigen_domain_set_desc()
203 		.name			= "mbigen-v2",
225 	if (WARN_ON_ONCE(!dev->msi.domain))  in mbigen_create_device_domain()
230 					    NULL, mgn_chip->base);  in mbigen_create_device_domain()
239 	for_each_child_of_node_scoped(pdev->dev.of_node, np) {  in mbigen_of_create_domain()
240 		if (!of_property_read_bool(np, "interrupt-controller"))  in mbigen_of_create_domain()
245 			return -ENOMEM;  in mbigen_of_create_domain()
247 		if (of_property_read_u32(child->dev.of_node, "num-pins",  in mbigen_of_create_domain()
249 			dev_err(&pdev->dev, "No num-pins property\n");  in mbigen_of_create_domain()
250 			return -EINVAL;  in mbigen_of_create_domain()
253 		if (!mbigen_create_device_domain(&child->dev, num_pins, mgn_chip))  in mbigen_of_create_domain()
254 			return -ENOMEM;  in mbigen_of_create_domain()
274 	 * "num-pins" is the total number of interrupt pins implemented in  in mbigen_acpi_create_domain()
277 	 * use "num-pins" to alloc MSI vectors which are needed by client  in mbigen_acpi_create_domain()
289 	 *			ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),  in mbigen_acpi_create_domain()
291 	 *				Package () {"num-pins", 378}  in mbigen_acpi_create_domain()
296 	ret = device_property_read_u32(&pdev->dev, "num-pins", &num_pins);  in mbigen_acpi_create_domain()
298 		return -EINVAL;  in mbigen_acpi_create_domain()
300 	if (!mbigen_create_device_domain(&pdev->dev, num_pins, mgn_chip))  in mbigen_acpi_create_domain()
301 		return -ENOMEM;  in mbigen_acpi_create_domain()
309 	return -ENODEV;  in mbigen_acpi_create_domain()
319 	mgn_chip = devm_kzalloc(&pdev->dev, sizeof(*mgn_chip), GFP_KERNEL);  in mbigen_device_probe()
321 		return -ENOMEM;  in mbigen_device_probe()
323 	mgn_chip->pdev = pdev;  in mbigen_device_probe()
327 		return -EINVAL;  in mbigen_device_probe()
329 	mgn_chip->base = devm_ioremap(&pdev->dev, res->start,  in mbigen_device_probe()
331 	if (!mgn_chip->base) {  in mbigen_device_probe()
332 		dev_err(&pdev->dev, "failed to ioremap %pR\n", res);  in mbigen_device_probe()
333 		return -ENOMEM;  in mbigen_device_probe()
336 	if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node)  in mbigen_device_probe()
338 	else if (ACPI_COMPANION(&pdev->dev))  in mbigen_device_probe()
341 		err = -EINVAL;  in mbigen_device_probe()
344 		dev_err(&pdev->dev, "Failed to create mbi-gen irqdomain\n");  in mbigen_device_probe()
353 	{ .compatible = "hisilicon,mbigen-v2" },
360 		.name		= "Hisilicon MBIGEN-V2",