Merge tag 'vfio-v3.11' of git://github.com/awilliam/linux-vfio

[jlayton/linux.git] / include / uapi / linux / vfio.h

diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index 513600612995f578ab19eb24f8a23dc0fc33877d..916e444e6f74f38745353ec96108dd63e6b91a7e 100644 (file)
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -22,6 +22,7 @@
 /* Extensions */
 
 #define VFIO_TYPE1_IOMMU               1
+#define VFIO_SPAPR_TCE_IOMMU           2
 
 /*
  * The IOCTL interface is designed for extensibility by embedding the
@@ -379,4 +380,37 @@ struct vfio_iommu_type1_dma_unmap {
 
 #define VFIO_IOMMU_UNMAP_DMA _IO(VFIO_TYPE, VFIO_BASE + 14)
 
+/*
+ * IOCTLs to enable/disable IOMMU container usage.
+ * No parameters are supported.
+ */
+#define VFIO_IOMMU_ENABLE      _IO(VFIO_TYPE, VFIO_BASE + 15)
+#define VFIO_IOMMU_DISABLE     _IO(VFIO_TYPE, VFIO_BASE + 16)
+
+/* -------- Additional API for SPAPR TCE (Server POWERPC) IOMMU -------- */
+
+/*
+ * The SPAPR TCE info struct provides the information about the PCI bus
+ * address ranges available for DMA, these values are programmed into
+ * the hardware so the guest has to know that information.
+ *
+ * The DMA 32 bit window start is an absolute PCI bus address.
+ * The IOVA address passed via map/unmap ioctls are absolute PCI bus
+ * addresses too so the window works as a filter rather than an offset
+ * for IOVA addresses.
+ *
+ * A flag will need to be added if other page sizes are supported,
+ * so as defined here, it is always 4k.
+ */
+struct vfio_iommu_spapr_tce_info {
+       __u32 argsz;
+       __u32 flags;                    /* reserved for future use */
+       __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)
+
+/* ***************************************************************** */
+
 #endif /* _UAPIVFIO_H */