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xen: remap GSIs as pirqs when running as initial domain

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Implement xen_register_gsi to setup the correct triggering and polarity
properties of a gsi.
Implement xen_register_pirq to register a particular gsi as pirq and
receive interrupts as events.
Call xen_setup_pirqs to register all the legacy ISA irqs as pirqs.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Jeremy Fitzhardinge
2010-09-02 14:51:39 +01:00
committed by Stefano Stabellini
parent 6b0661a5e6
commit 38aa66fcb7
4 changed files with 165 additions and 0 deletions
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7
arch/x86/include/asm/xen/pci.h
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@ -13,6 +13,13 @@ static inline int pci_xen_hvm_init(void)
return -1;
}
#endif
#if defined(CONFIG_XEN_DOM0)
void __init xen_setup_pirqs(void);
#else
static inline void __init xen_setup_pirqs(void)
{
}
#endif
#if defined(CONFIG_PCI_MSI)
#if defined(CONFIG_PCI_XEN)