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

[Alexey Kardashevskiy]

Signed-off-by: Alexey Kardashevskiy <address@hidden>
---
 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