From: Yinghai Lu Date: Wed, 6 May 2009 17:08:50 +0000 (-0700) Subject: x86/acpi: move setup io apic routing out of CONFIG_ACPI scope X-Git-Tag: v2.6.31-rc1~423^2~16 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5ef2183768bb7d64b85eccbfa1537a61cbefa97c;p=platform%2Fkernel%2Flinux-3.10.git x86/acpi: move setup io apic routing out of CONFIG_ACPI scope So we could set io apic routing when ACPI is not enabled. [ Impact: prepare for new functionality ] Signed-off-by: Yinghai Lu Cc: Andrew Morton Cc: Jesse Barnes Cc: Len Brown LKML-Reference: <4A01C422.5070400@kernel.org> Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 27bd2fd..6fd99f9 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -154,10 +154,10 @@ extern int timer_through_8259; extern int io_apic_get_unique_id(int ioapic, int apic_id); extern int io_apic_get_version(int ioapic); extern int io_apic_get_redir_entries(int ioapic); -extern int io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, - int irq, int edge_level, int active_high_low); #endif /* CONFIG_ACPI */ +extern int io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, + int irq, int edge_level, int active_high_low); extern int (*ioapic_renumber_irq)(int ioapic, int irq); extern void ioapic_init_mappings(void); diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index caf9dbd..3a68dae 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -3839,6 +3839,67 @@ int __init arch_probe_nr_irqs(void) } #endif +static int __io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, int irq, + int triggering, int polarity) +{ + struct irq_desc *desc; + struct irq_cfg *cfg; + int node; + + if (!IO_APIC_IRQ(irq)) { + apic_printk(APIC_QUIET,KERN_ERR "IOAPIC[%d]: Invalid reference to IRQ 0\n", + ioapic); + return -EINVAL; + } + + if (dev) + node = dev_to_node(dev); + else + node = cpu_to_node(boot_cpu_id); + + desc = irq_to_desc_alloc_node(irq, node); + if (!desc) { + printk(KERN_INFO "can not get irq_desc %d\n", irq); + return 0; + } + + /* + * IRQs < 16 are already in the irq_2_pin[] map + */ + if (irq >= NR_IRQS_LEGACY) { + cfg = desc->chip_data; + add_pin_to_irq_node(cfg, node, ioapic, pin); + } + + setup_IO_APIC_irq(ioapic, pin, irq, desc, triggering, polarity); + + return 0; +} + +static struct { + DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1); +} mp_ioapic_routing[MAX_IO_APICS]; + +int io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, int irq, + int triggering, int polarity) +{ + + /* + * Avoid pin reprogramming. PRTs typically include entries + * with redundant pin->gsi mappings (but unique PCI devices); + * we only program the IOAPIC on the first. + */ + if (test_bit(pin, mp_ioapic_routing[ioapic].pin_programmed)) { + pr_debug("Pin %d-%d already programmed\n", + mp_ioapics[ioapic].apicid, pin); + return 0; + } + set_bit(pin, mp_ioapic_routing[ioapic].pin_programmed); + + return __io_apic_set_pci_routing(dev, ioapic, pin, irq, + triggering, polarity); +} + /* -------------------------------------------------------------------------- ACPI-based IOAPIC Configuration -------------------------------------------------------------------------- */ @@ -3933,67 +3994,6 @@ int __init io_apic_get_version(int ioapic) } #endif -static int __io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, int irq, - int triggering, int polarity) -{ - struct irq_desc *desc; - struct irq_cfg *cfg; - int node; - - if (!IO_APIC_IRQ(irq)) { - apic_printk(APIC_QUIET,KERN_ERR "IOAPIC[%d]: Invalid reference to IRQ 0\n", - ioapic); - return -EINVAL; - } - - if (dev) - node = dev_to_node(dev); - else - node = cpu_to_node(boot_cpu_id); - - desc = irq_to_desc_alloc_node(irq, node); - if (!desc) { - printk(KERN_INFO "can not get irq_desc %d\n", irq); - return 0; - } - - /* - * IRQs < 16 are already in the irq_2_pin[] map - */ - if (irq >= NR_IRQS_LEGACY) { - cfg = desc->chip_data; - add_pin_to_irq_node(cfg, node, ioapic, pin); - } - - setup_IO_APIC_irq(ioapic, pin, irq, desc, triggering, polarity); - - return 0; -} - -static struct { - DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1); -} mp_ioapic_routing[MAX_IO_APICS]; - -int io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, int irq, - int triggering, int polarity) -{ - - /* - * Avoid pin reprogramming. PRTs typically include entries - * with redundant pin->gsi mappings (but unique PCI devices); - * we only program the IOAPIC on the first. - */ - if (test_bit(pin, mp_ioapic_routing[ioapic].pin_programmed)) { - pr_debug("Pin %d-%d already programmed\n", - mp_ioapics[ioapic].apicid, pin); - return 0; - } - set_bit(pin, mp_ioapic_routing[ioapic].pin_programmed); - - return __io_apic_set_pci_routing(dev, ioapic, pin, irq, - triggering, polarity); -} - int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity) { int i;