1 // SPDX-License-Identifier: GPL-2.0+
5  * Handling for platform devices in IPMI (ACPI, OF, and things
57 /* For GPE-type interrupts. */
63 	ipmi_si_irq_handler(io->irq, io->irq_handler_data);  in ipmi_acpi_gpe()
69 	if (!io->irq)  in acpi_gpe_irq_cleanup()
73 	acpi_remove_gpe_handler(NULL, io->irq, &ipmi_acpi_gpe);  in acpi_gpe_irq_cleanup()
80 	if (!io->irq)  in acpi_gpe_irq_setup()
84 					  io->irq,  in acpi_gpe_irq_setup()
89 		dev_warn(io->dev,  in acpi_gpe_irq_setup()
91 			 io->irq);  in acpi_gpe_irq_setup()
92 		io->irq = 0;  in acpi_gpe_irq_setup()
93 		return -EINVAL;  in acpi_gpe_irq_setup()
95 		io->irq_cleanup = acpi_gpe_irq_cleanup;  in acpi_gpe_irq_setup()
97 		dev_info(io->dev, "Using ACPI GPE %d\n", io->irq);  in acpi_gpe_irq_setup()
111 		io->addr_space = IPMI_IO_ADDR_SPACE;  in ipmi_get_info_from_resources()
115 			io->addr_space = IPMI_MEM_ADDR_SPACE;  in ipmi_get_info_from_resources()
118 		dev_err(&pdev->dev, "no I/O or memory address\n");  in ipmi_get_info_from_resources()
121 	io->addr_data = res->start;  in ipmi_get_info_from_resources()
123 	io->regspacing = DEFAULT_REGSPACING;  in ipmi_get_info_from_resources()
125 			       (io->addr_space == IPMI_IO_ADDR_SPACE) ?  in ipmi_get_info_from_resources()
129 		if (res_second->start > io->addr_data)  in ipmi_get_info_from_resources()
130 			io->regspacing = res_second->start - io->addr_data;  in ipmi_get_info_from_resources()
142 	rv = device_property_read_u8(&pdev->dev, "addr-source", &addr_source);  in platform_ipmi_probe()
146 		return -EINVAL;  in platform_ipmi_probe()
150 			return -ENODEV;  in platform_ipmi_probe()
153 			return -ENODEV;  in platform_ipmi_probe()
156 	rv = device_property_read_u8(&pdev->dev, "ipmi-type", &type);  in platform_ipmi_probe()
158 		return -ENODEV;  in platform_ipmi_probe()
162 	dev_info(&pdev->dev, "probing via %s\n",  in platform_ipmi_probe()
172 		return -ENODEV;  in platform_ipmi_probe()
174 		dev_err(&pdev->dev, "ipmi-type property is invalid\n");  in platform_ipmi_probe()
175 		return -EINVAL;  in platform_ipmi_probe()
179 	rv = device_property_read_u8(&pdev->dev, "reg-size", &regsize);  in platform_ipmi_probe()
184 	rv = device_property_read_u8(&pdev->dev, "reg-shift", &regshift);  in platform_ipmi_probe()
189 		return -EINVAL;  in platform_ipmi_probe()
191 	rv = device_property_read_u8(&pdev->dev, "slave-addr", &slave_addr);  in platform_ipmi_probe()
203 	io.dev = &pdev->dev;  in platform_ipmi_probe()
217 	{ .type = "ipmi", .compatible = "ipmi-kcs",
219 	{ .type = "ipmi", .compatible = "ipmi-smic",
221 	{ .type = "ipmi", .compatible = "ipmi-bt",
233 	struct device_node *np = pdev->dev.of_node;  in of_ipmi_probe()
238 		return -ENODEV;  in of_ipmi_probe()
240 	dev_info(&pdev->dev, "probing via device tree\n");  in of_ipmi_probe()
242 	match = of_match_device(of_ipmi_match, &pdev->dev);  in of_ipmi_probe()
244 		return -ENODEV;  in of_ipmi_probe()
247 		return -EINVAL;  in of_ipmi_probe()
251 		dev_warn(&pdev->dev, "invalid address from OF\n");  in of_ipmi_probe()
255 	regsize = of_get_property(np, "reg-size", &proplen);  in of_ipmi_probe()
257 		dev_warn(&pdev->dev, "invalid regsize from OF\n");  in of_ipmi_probe()
258 		return -EINVAL;  in of_ipmi_probe()
261 	regspacing = of_get_property(np, "reg-spacing", &proplen);  in of_ipmi_probe()
263 		dev_warn(&pdev->dev, "invalid regspacing from OF\n");  in of_ipmi_probe()
264 		return -EINVAL;  in of_ipmi_probe()
267 	regshift = of_get_property(np, "reg-shift", &proplen);  in of_ipmi_probe()
269 		dev_warn(&pdev->dev, "invalid regshift from OF\n");  in of_ipmi_probe()
270 		return -EINVAL;  in of_ipmi_probe()
274 	io.si_type	= (enum si_type) match->data;  in of_ipmi_probe()
289 	io.irq		= irq_of_parse_and_map(pdev->dev.of_node, 0);  in of_ipmi_probe()
290 	io.dev		= &pdev->dev;  in of_ipmi_probe()
292 	dev_dbg(&pdev->dev, "addr 0x%lx regsize %d spacing %d irq %d\n",  in of_ipmi_probe()
301 	return -ENODEV;  in of_ipmi_probe()
310 		slave_addr = ipmi_dmi_get_slave_addr(io->si_type,  in find_slave_address()
311 						     io->addr_space,  in find_slave_address()
312 						     io->addr_data);  in find_slave_address()
325 	int rv = -EINVAL;  in acpi_ipmi_probe()
328 		return -ENODEV;  in acpi_ipmi_probe()
330 	handle = ACPI_HANDLE(&pdev->dev);  in acpi_ipmi_probe()
332 		return -ENODEV;  in acpi_ipmi_probe()
336 	dev_info(&pdev->dev, "probing via ACPI\n");  in acpi_ipmi_probe()
340 	/* _IFT tells us the interface type: KCS, BT, etc */  in acpi_ipmi_probe()
343 		dev_err(&pdev->dev,  in acpi_ipmi_probe()
344 			"Could not find ACPI IPMI interface type\n");  in acpi_ipmi_probe()
359 		rv = -ENODEV;  in acpi_ipmi_probe()
362 		dev_info(&pdev->dev, "unknown IPMI type %lld\n", tmp);  in acpi_ipmi_probe()
371 		rv = -EINVAL;  in acpi_ipmi_probe()
391 	io.dev = &pdev->dev;  in acpi_ipmi_probe()
412 	return -ENODEV;  in acpi_ipmi_probe()
418 	if (pdev->dev.of_node && of_ipmi_probe(pdev) == 0)  in ipmi_probe()
429 	return ipmi_si_remove_by_dev(&pdev->dev);  in ipmi_remove()
437 	return strcmp(pdev->name, name) == 0;  in pdev_match_name()
454 	{ "dmi-ipmi-si", 0 },
455 	{ "hardcode-ipmi-si", 0 },
456 	{ "hotmod-ipmi-si", 0 },