This API returns the host irq for the MSI/MSI-X interrrupts.
Signed-off-by: Feng Wu <[email protected]>
---
drivers/vfio/pci/vfio_pci.c | 10 ++++++++++
include/linux/vfio.h | 2 ++
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 9558da3..4fb9828 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -1009,6 +1009,16 @@ put_devs:
kfree(devs.devices);
}
+unsigned int vfio_msi_get_irq(struct vfio_device *device, int vector, bool
msix)
+{
+ struct vfio_pci_device *vdev =
+ (struct vfio_pci_device *)vfio_device_data(device);
+ struct pci_dev *pdev = vdev->pdev;
+
+ return msix ? vdev->msix[vector].vector : pdev->irq + vector;
+}
+EXPORT_SYMBOL_GPL(vfio_msi_get_irq);
+
static void __exit vfio_pci_cleanup(void)
{
pci_unregister_driver(&vfio_pci_driver);
diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index d320411..007ca55 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -92,6 +92,8 @@ extern void vfio_unregister_iommu_driver(
/*
* External user API
*/
+extern unsigned int vfio_msi_get_irq(struct vfio_device *device, int vector,
+ bool msix);
extern struct vfio_group *vfio_group_get_external_user(struct file *filep);
extern void vfio_group_put_external_user(struct vfio_group *group);
extern int vfio_external_user_iommu_id(struct vfio_group *group);
--
1.7.1
--
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