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xen/irq: Export 'xen_pirq_from_irq' function.

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We need this to find the real Xen PIRQ value for a device
that requests an MSI or MSI-X. In the past we used
'xen_gsi_from_irq' since that function would return
an Xen PIRQ or GSI depending on the provided IRQ. Now that
we have seperated that we need to use the correct
function.

[v2: Deal with rebase on stable/irq.cleanup]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Konrad Rzeszutek Wilk 2011-02-24 14:20:12 -05:00
parent c7c2c3a286
commit e6197acc72
2 changed files with 9 additions and 0 deletions
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6
drivers/xen/events.c
View file

@ -763,6 +763,12 @@ int xen_irq_from_pirq(unsigned pirq)
return irq;
}
int xen_pirq_from_irq(unsigned irq)
{
return pirq_from_irq(irq);
}
EXPORT_SYMBOL_GPL(xen_pirq_from_irq);
int bind_evtchn_to_irq(unsigned int evtchn)
{
int irq;

3
include/xen/events.h
View file

@ -95,6 +95,9 @@ int xen_destroy_irq(int irq);
/* Return irq from pirq */
int xen_irq_from_pirq(unsigned pirq);
/* Return the pirq allocated to the irq. */
int xen_pirq_from_irq(unsigned irq);
/* Determine whether to ignore this IRQ if it is passed to a guest. */
int xen_test_irq_shared(int irq);