X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Facpi%2Fpci_irq.c;h=23e99452233485d677a7874fef3d2041d5060c06;hb=9bf4aaab3e101692164d49b7ca357651eb691cb6;hp=8e73079dfe9a574f7e2c5a77dfa58967615b0b32;hpb=db216c3d5e4c040e557a50f8f5d35d5c415e8c1c;p=linux-2.6.git diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index 8e73079df..23e994522 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -35,12 +35,6 @@ #include #include #include -#ifdef CONFIG_X86_IO_APIC -#include -#endif -#ifdef CONFIG_IOSAPIC -# include -#endif #include #include @@ -50,10 +44,6 @@ ACPI_MODULE_NAME ("pci_irq") struct acpi_prt_list acpi_prt; -#ifdef CONFIG_X86 -extern void eisa_set_level_irq(unsigned int irq); -#endif - /* -------------------------------------------------------------------------- PCI IRQ Routing Table (PRT) Support @@ -237,12 +227,18 @@ acpi_pci_irq_add_prt ( PCI Interrupt Routing Support -------------------------------------------------------------------------- */ -int -acpi_pci_irq_lookup (struct pci_bus *bus, int device, int pin) +static int +acpi_pci_irq_lookup ( + struct pci_bus *bus, + int device, + int pin, + int *edge_level, + int *active_high_low) { struct acpi_prt_entry *entry = NULL; int segment = pci_domain_nr(bus); int bus_nr = bus->number; + int irq; ACPI_FUNCTION_TRACE("acpi_pci_irq_lookup"); @@ -255,28 +251,30 @@ acpi_pci_irq_lookup (struct pci_bus *bus, int device, int pin) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "PRT entry not found\n")); return_VALUE(0); } - - if (!entry->irq && entry->link.handle) { - entry->irq = acpi_pci_link_get_irq(entry->link.handle, entry->link.index, NULL, NULL); - if (!entry->irq) { + + if (entry->link.handle) { + irq = acpi_pci_link_get_irq(entry->link.handle, entry->link.index, edge_level, active_high_low); + if (!irq) { ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid IRQ link routing entry\n")); return_VALUE(0); } - } - else if (!entry->irq) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Invalid static routing entry (IRQ 0)\n")); - return_VALUE(0); + } else { + irq = entry->link.index; + *edge_level = ACPI_LEVEL_SENSITIVE; + *active_high_low = ACPI_ACTIVE_LOW; } - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found IRQ %d\n", entry->irq)); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found IRQ %d\n", irq)); - return_VALUE(entry->irq); + return_VALUE(irq); } static int acpi_pci_irq_derive ( struct pci_dev *dev, - int pin) + int pin, + int *edge_level, + int *active_high_low) { struct pci_dev *bridge = dev; int irq = 0; @@ -308,8 +306,8 @@ acpi_pci_irq_derive ( pin = bridge_pin; } - irq = acpi_pci_irq_lookup(bridge->bus, - PCI_SLOT(bridge->devfn), pin); + irq = acpi_pci_irq_lookup(bridge->bus, PCI_SLOT(bridge->devfn), + pin, edge_level, active_high_low); } if (!irq) { @@ -330,6 +328,8 @@ acpi_pci_irq_enable ( { int irq = 0; u8 pin = 0; + int edge_level = ACPI_LEVEL_SENSITIVE; + int active_high_low = ACPI_ACTIVE_LOW; ACPI_FUNCTION_TRACE("acpi_pci_irq_enable"); @@ -352,21 +352,22 @@ acpi_pci_irq_enable ( * First we check the PCI IRQ routing table (PRT) for an IRQ. PRT * values override any BIOS-assigned IRQs set during boot. */ - irq = acpi_pci_irq_lookup(dev->bus, PCI_SLOT(dev->devfn), pin); + irq = acpi_pci_irq_lookup(dev->bus, PCI_SLOT(dev->devfn), pin, &edge_level, &active_high_low); /* * If no PRT entry was found, we'll try to derive an IRQ from the * device's parent bridge. */ if (!irq) - irq = acpi_pci_irq_derive(dev, pin); + irq = acpi_pci_irq_derive(dev, pin, &edge_level, &active_high_low); /* * No IRQ known to the ACPI subsystem - maybe the BIOS / * driver reported one, then use it. Exit in any case. */ if (!irq) { - printk(KERN_WARNING PREFIX "No IRQ known for interrupt pin %c of device %s", ('A' + pin), pci_name(dev)); + printk(KERN_WARNING PREFIX "PCI interrupt %s[%c]: no GSI", + pci_name(dev), ('A' + pin)); /* Interrupt Line values above 0xF are forbidden */ if (dev->irq && (dev->irq <= 0xF)) { printk(" - using IRQ %d\n", dev->irq); @@ -378,62 +379,14 @@ acpi_pci_irq_enable ( } } - dev->irq = irq; + dev->irq = acpi_register_gsi(irq, edge_level, active_high_low); - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device %s using IRQ %d\n", pci_name(dev), dev->irq)); - - /* - * Make sure all (legacy) PCI IRQs are set as level-triggered. - */ -#ifdef CONFIG_X86 - { - static u16 irq_mask; - if ((dev->irq < 16) && !((1 << dev->irq) & irq_mask)) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Setting IRQ %d as level-triggered\n", dev->irq)); - irq_mask |= (1 << dev->irq); - eisa_set_level_irq(dev->irq); - } - } -#endif -#ifdef CONFIG_IOSAPIC - if (acpi_irq_model == ACPI_IRQ_MODEL_IOSAPIC) - iosapic_enable_intr(dev->irq); -#endif + printk(KERN_INFO PREFIX "PCI interrupt %s[%c] -> GSI %u " + "(%s, %s) -> IRQ %d\n", + pci_name(dev), 'A' + pin, irq, + (edge_level == ACPI_LEVEL_SENSITIVE) ? "level" : "edge", + (active_high_low == ACPI_ACTIVE_LOW) ? "low" : "high", + dev->irq); return_VALUE(dev->irq); } - - -int __init -acpi_pci_irq_init (void) -{ - struct pci_dev *dev = NULL; - - ACPI_FUNCTION_TRACE("acpi_pci_irq_init"); - - if (!acpi_prt.count) { - printk(KERN_WARNING PREFIX "ACPI tables contain no PCI IRQ " - "routing entries\n"); - return_VALUE(-ENODEV); - } - - /* Make sure all link devices have a valid IRQ. */ - if (acpi_pci_link_check()) { - return_VALUE(-ENODEV); - } - -#ifdef CONFIG_X86_IO_APIC - /* Program IOAPICs using data from PRT entries. */ - if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) - mp_parse_prt(); -#endif -#ifdef CONFIG_IOSAPIC - if (acpi_irq_model == ACPI_IRQ_MODEL_IOSAPIC) - iosapic_parse_prt(); -#endif - - while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) - acpi_pci_irq_enable(dev); - - return_VALUE(0); -}