x64, x2apic/intr-remap: MSI and MSI-X support for interrupt remapping infrastructure

[pandora-kernel.git] / drivers / pci / intr_remapping.c

diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index 32e55c7..bb642cc 100644 (file)
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -230,6 +230,17 @@ struct intel_iommu *map_ioapic_to_ir(int apic)
        return NULL;
 }
 
+struct intel_iommu *map_dev_to_ir(struct pci_dev *dev)
+{
+       struct dmar_drhd_unit *drhd;
+
+       drhd = dmar_find_matched_drhd_unit(dev);
+       if (!drhd)
+               return NULL;
+
+       return drhd->iommu;
+}
+
 int free_irte(int irq)
 {
        int index, i;