[PATCH v1 2/7] vfio: ap: VFIO AP Queue Interrupt Control

Pierre Morel
2018-10-31T18:12:52Z

We define two VFIO ioctl command to setup and clear
the AP Queues interrupt.

Arguments passed by the guest are:
- the apqn, AP queue number
- the Notification by address
- the identifier of the previously associated adapter

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
include/uapi/linux/vfio.h | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)

diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index f378b9802d8b..f13079bb28af 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -816,6 +816,28 @@ struct vfio_iommu_spapr_tce_remove {
};
#define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20)

+/**
+ * VFIO_AP_SET_IRQ - _IOWR(VFIO_TYPE, VFIO_BASE + 21, struct vfio_ap_aqic)
+ *
+ * Setup IRQ for an AP Queue
+ * @cmd contains the AP queue number (apqn)
+ * @status receives the resulting status of the command
+ * @nib is the Notification Indicator byte address
+ * @adapter_id allows to retrieve the associated adapter
+ */
+struct vfio_ap_aqic {
+ __u32 argsz;
+ __u32 flags;
+ /* in */
+ __u64 cmd;
+ __u64 status;
+ __u64 nib;
+ __u32 adapter_id;
+};
+#define VFIO_AP_SET_IRQ _IO(VFIO_TYPE, VFIO_BASE + 21)
+#define VFIO_AP_CLEAR_IRQ _IO(VFIO_TYPE, VFIO_BASE + 22)
+
/* ***************************************************************** */

+
#endif /* _UAPIVFIO_H */
--
2.17.0