136 static int acpi_pci_irq_check_entry(acpi_handle handle, struct pci_dev *dev,  in acpi_pci_irq_check_entry()  argument
140 	int segment = pci_domain_nr(dev->bus);  in acpi_pci_irq_check_entry()
141 	int bus = dev->bus->number;  in acpi_pci_irq_check_entry()
142 	int device = pci_ari_enabled(dev->bus) ? 0 : PCI_SLOT(dev->devfn);  in acpi_pci_irq_check_entry()
199 static int acpi_pci_irq_find_prt_entry(struct pci_dev *dev,  in acpi_pci_irq_find_prt_entry()  argument
207 	if (dev->bus->bridge)  in acpi_pci_irq_find_prt_entry()
208 		handle = ACPI_HANDLE(dev->bus->bridge);  in acpi_pci_irq_find_prt_entry()
222 		if (!acpi_pci_irq_check_entry(handle, dev, pin,  in acpi_pci_irq_find_prt_entry()
260 static int acpi_reroute_boot_interrupt(struct pci_dev *dev,  in acpi_reroute_boot_interrupt()  argument
266 		switch (bridge_has_boot_interrupt_variant(dev->bus)) {  in acpi_reroute_boot_interrupt()
277 			dev_info(&dev->dev, "PCI IRQ %d -> rerouted to legacy "  in acpi_reroute_boot_interrupt()
283 			dev_warn(&dev->dev, "Cannot reroute IRQ %d to legacy "  in acpi_reroute_boot_interrupt()
291 static struct acpi_prt_entry *acpi_pci_irq_lookup(struct pci_dev *dev, int pin)  in acpi_pci_irq_lookup()  argument
298 	ret = acpi_pci_irq_find_prt_entry(dev, pin, &entry);  in acpi_pci_irq_lookup()
301 		acpi_reroute_boot_interrupt(dev, entry);  in acpi_pci_irq_lookup()
303 		dev_dbg(&dev->dev, "Found [%c] _PRT entry\n", pin_name(pin));  in acpi_pci_irq_lookup()
311 	bridge = dev->bus->self;  in acpi_pci_irq_lookup()
313 		pin = pci_swizzle_interrupt_pin(dev, pin);  in acpi_pci_irq_lookup()
319 				dev_dbg(&bridge->dev, "No interrupt pin configured\n");  in acpi_pci_irq_lookup()
327 			dev_dbg(&dev->dev, "Derived GSI INT %c from %s\n",  in acpi_pci_irq_lookup()
332 		dev = bridge;  in acpi_pci_irq_lookup()
333 		bridge = dev->bus->self;  in acpi_pci_irq_lookup()
336 	dev_warn(&dev->dev, "can't derive routing for PCI INT %c\n",  in acpi_pci_irq_lookup()
342 static int acpi_isa_register_gsi(struct pci_dev *dev)  in acpi_isa_register_gsi()  argument
347 	if (dev->irq > 0 && (dev->irq <= 0xF) &&  in acpi_isa_register_gsi()
348 	    acpi_isa_irq_available(dev->irq) &&  in acpi_isa_register_gsi()
349 	    (acpi_isa_irq_to_gsi(dev->irq, &dev_gsi) == 0)) {  in acpi_isa_register_gsi()
350 		dev_warn(&dev->dev, "PCI INT %c: no GSI - using ISA IRQ %d\n",  in acpi_isa_register_gsi()
351 			 pin_name(dev->pin), dev->irq);  in acpi_isa_register_gsi()
352 		acpi_register_gsi(&dev->dev, dev_gsi,  in acpi_isa_register_gsi()
360 static inline int acpi_isa_register_gsi(struct pci_dev *dev)  in acpi_isa_register_gsi()  argument
366 static inline bool acpi_pci_irq_valid(struct pci_dev *dev, u8 pin)  in acpi_pci_irq_valid()  argument
373 	if (dev->irq == 0xff) {  in acpi_pci_irq_valid()
374 		dev->irq = IRQ_NOTCONNECTED;  in acpi_pci_irq_valid()
375 		dev_warn(&dev->dev, "PCI INT %c: not connected\n",  in acpi_pci_irq_valid()
383 int acpi_pci_irq_enable(struct pci_dev *dev)  in acpi_pci_irq_enable()  argument
404 	pin = dev->pin;  in acpi_pci_irq_enable()
406 		dev_dbg(&dev->dev, "No interrupt pin configured\n");  in acpi_pci_irq_enable()
410 	if (dev->irq_managed && dev->irq > 0)  in acpi_pci_irq_enable()
413 	entry = acpi_pci_irq_lookup(dev, pin);  in acpi_pci_irq_enable()
419 		if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE &&  in acpi_pci_irq_enable()
420 				(dev->class & 0x05) == 0)  in acpi_pci_irq_enable()
440 		if (!acpi_pci_irq_valid(dev, pin)) {  in acpi_pci_irq_enable()
445 		if (acpi_isa_register_gsi(dev))  in acpi_pci_irq_enable()
446 			dev_warn(&dev->dev, "PCI INT %c: no GSI\n",  in acpi_pci_irq_enable()
453 	rc = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);  in acpi_pci_irq_enable()
455 		dev_warn(&dev->dev, "PCI INT %c: failed to register GSI\n",  in acpi_pci_irq_enable()
460 	dev->irq = rc;  in acpi_pci_irq_enable()
461 	dev->irq_managed = 1;  in acpi_pci_irq_enable()
468 	dev_dbg(&dev->dev, "PCI INT %c%s -> GSI %u (%s, %s) -> IRQ %d\n",  in acpi_pci_irq_enable()
471 		(polarity == ACPI_ACTIVE_LOW) ? "low" : "high", dev->irq);  in acpi_pci_irq_enable()
477 void acpi_pci_irq_disable(struct pci_dev *dev)  in acpi_pci_irq_disable()  argument
483 	pin = dev->pin;  in acpi_pci_irq_disable()
484 	if (!pin || !dev->irq_managed || dev->irq <= 0)  in acpi_pci_irq_disable()
488 	if (dev->dev.power.is_prepared)  in acpi_pci_irq_disable()
491 	if (dev->dev.power.runtime_status == RPM_SUSPENDING)  in acpi_pci_irq_disable()
495 	entry = acpi_pci_irq_lookup(dev, pin);  in acpi_pci_irq_disable()
511 	dev_dbg(&dev->dev, "PCI INT %c disabled\n", pin_name(pin));  in acpi_pci_irq_disable()
514 		dev->irq_managed = 0;  in acpi_pci_irq_disable()