[Qemu-devel] [RFC PATCH 05/10] linux headers update for DDW

[Alexey Kardashevskiy <aik@ozlabs.ru>]

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
 linux-headers/linux/vfio.h | 37 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)

diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
index 26c218e..f0aa97d 100644
--- a/linux-headers/linux/vfio.h
+++ b/linux-headers/linux/vfio.h
@@ -448,13 +448,48 @@ struct vfio_iommu_type1_dma_unmap {
  */
 struct vfio_iommu_spapr_tce_info {
 	__u32 argsz;
-	__u32 flags;			/* reserved for future use */
+	__u32 flags;
+#define VFIO_IOMMU_SPAPR_TCE_FLAG_DDW	1 /* Support dynamic windows */
 	__u32 dma32_window_start;	/* 32 bit window start (bytes) */
 	__u32 dma32_window_size;	/* 32 bit window size (bytes) */
 };
 
 #define VFIO_IOMMU_SPAPR_TCE_GET_INFO	_IO(VFIO_TYPE, VFIO_BASE + 12)
 
+/*
+ * Dynamic DMA windows
+ */
+struct vfio_iommu_spapr_tce_query {
+	__u32 argsz;
+	/* out */
+	__u32 windows_available;
+	__u32 page_size_mask;
+};
+#define VFIO_IOMMU_SPAPR_TCE_QUERY	_IO(VFIO_TYPE, VFIO_BASE + 17)
+
+struct vfio_iommu_spapr_tce_create {
+	__u32 argsz;
+	/* in */
+	__u32 page_shift;
+	__u32 window_shift;
+	/* out */
+	__u64 start_addr;
+
+};
+#define VFIO_IOMMU_SPAPR_TCE_CREATE	_IO(VFIO_TYPE, VFIO_BASE + 18)
+
+struct vfio_iommu_spapr_tce_remove {
+	__u32 argsz;
+	/* in */
+	__u64 start_addr;
+};
+#define VFIO_IOMMU_SPAPR_TCE_REMOVE	_IO(VFIO_TYPE, VFIO_BASE + 19)
+
+struct vfio_iommu_spapr_tce_reset {
+	__u32 argsz;
+};
+#define VFIO_IOMMU_SPAPR_TCE_RESET	_IO(VFIO_TYPE, VFIO_BASE + 20)
+
 /* ***************************************************************** */
 
 #endif /* VFIO_H */
-- 
2.0.0