Messages in this thread Patch in this message | | | From | Jeremy Fitzhardinge <> | Subject | [PATCH 11/18] xen: use acpi_get_override_irq() to get triggering for legacy irqs | Date | Thu, 7 May 2009 14:14:36 -0700 |
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From: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Impact: compatibility with legacy/ISA hardware
We need to set up proper IO apic entries for legacy irqs, which are not normally configured by either normal acpi interrupt routing or PNP.
This also generalizes the acpi interrupt setup, so we can remove it as a special case.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> --- arch/x86/xen/pci.c | 24 ++++++++++-------------- 1 files changed, 10 insertions(+), 14 deletions(-)
diff --git a/arch/x86/xen/pci.c b/arch/x86/xen/pci.c index e88f85e..f55532d 100644 --- a/arch/x86/xen/pci.c +++ b/arch/x86/xen/pci.c @@ -64,19 +64,15 @@ void __init xen_setup_pirqs(void) { int irq; -#ifdef CONFIG_ACPI - /* - * Set up acpi interrupt in acpi_gbl_FADT.sci_interrupt. - */ - if (acpi_gbl_FADT.sci_interrupt > 0) { - irq = xen_allocate_pirq(acpi_gbl_FADT.sci_interrupt); - - printk(KERN_INFO "xen: allocated irq %d for acpi %d\n", - irq, acpi_gbl_FADT.sci_interrupt); - } -#endif - /* Pre-allocate legacy irqs */ - for (irq=0; irq < NR_IRQS_LEGACY; irq++) - xen_allocate_pirq(irq); + for (irq=0; irq < NR_IRQS_LEGACY; irq++) { + int trigger, polarity; + + if (acpi_get_override_irq(irq, &trigger, &polarity) == -1) + continue; + + xen_register_gsi(irq, + trigger ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE, + polarity ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH); + } } -- 1.6.0.6
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