[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] [PATCH 12/17] xen: use acpi_get_override_irq() to get triggering for legacy irqs



From: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>

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@xxxxxxxxxx>
---
 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


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.