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

Message ID 1541009577-29656-3-git-send-email-pmorel@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series s390: vfio: ap: Using GISA for AP Interrupt | expand

Commit Message

Pierre Morel Oct. 31, 2018, 6:12 p.m. UTC 
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(+)
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Patch

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 */