Revert "Merge pull request #493 from swapnili/use-linux-vfio-header"

This reverts commit 250aedb026ba557fc4fae6ff301b3b1dfd953c7e, reversing
changes made to 71f8b30557d3635336aec06c084188370ed5e248.

1 files changed, 61 insertions, 0 deletions

diff --git a/include/vfio-user.h b/include/vfio-user.h
index 09a756e..053ead2 100644
--- a/include/vfio-user.h
+++ b/include/vfio-user.h
@@ -133,6 +133,67 @@ struct vfio_user_irq_info {
     uint32_t    subindex;
 } __attribute__((packed));
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,8,0)
+
+/* copied from <linux/vfio.h> */
+
+#define VFIO_DEVICE_STATE_STOP      (0)
+#define VFIO_DEVICE_STATE_RUNNING   (1 << 0)
+#define VFIO_DEVICE_STATE_SAVING    (1 << 1)
+#define VFIO_DEVICE_STATE_RESUMING  (1 << 2)
+#define VFIO_DEVICE_STATE_MASK      (VFIO_DEVICE_STATE_RUNNING | \
+				     VFIO_DEVICE_STATE_SAVING |  \
+				     VFIO_DEVICE_STATE_RESUMING)
+
+#define VFIO_DEVICE_STATE_VALID(state) \
+	(state & VFIO_DEVICE_STATE_RESUMING ? \
+	(state & VFIO_DEVICE_STATE_MASK) == VFIO_DEVICE_STATE_RESUMING : 1)
+
+#define VFIO_DEVICE_STATE_IS_ERROR(state) \
+	((state & VFIO_DEVICE_STATE_MASK) == (VFIO_DEVICE_STATE_SAVING | \
+					      VFIO_DEVICE_STATE_RESUMING))
+
+#define VFIO_DEVICE_STATE_SET_ERROR(state) \
+	((state & ~VFIO_DEVICE_STATE_MASK) | VFIO_DEVICE_SATE_SAVING | \
+					     VFIO_DEVICE_STATE_RESUMING)
+
+/* RHEL kernels have some of it backported */
+#ifndef VFIO_REGION_TYPE_MIGRATION /* not a RHEL kernel */
+#define VFIO_REGION_TYPE_MIGRATION              (3)
+#define VFIO_REGION_SUBTYPE_MIGRATION           (1)
+
+struct vfio_device_migration_info {
+	__u32 device_state;         /* VFIO device state */
+	__u32 reserved;
+	__u64 pending_bytes;
+	__u64 data_offset;
+	__u64 data_size;
+};
+#endif /* not a RHEL kernel */
+
+struct vfio_bitmap {
+	__u64        pgsize;	/* page size for bitmap in bytes */
+	__u64        size;	/* in bytes */
+	__u64 *data;	/* one bit per page */
+};
+
+struct vfio_iommu_type1_dirty_bitmap {
+	__u32        argsz;
+	__u32        flags;
+#define VFIO_IOMMU_DIRTY_PAGES_FLAG_START	(1 << 0)
+#define VFIO_IOMMU_DIRTY_PAGES_FLAG_STOP	(1 << 1)
+#define VFIO_IOMMU_DIRTY_PAGES_FLAG_GET_BITMAP	(1 << 2)
+	__u8         data[];
+};
+
+struct vfio_iommu_type1_dirty_bitmap_get {
+	__u64              iova;	/* IO virtual address */
+	__u64              size;	/* Size of iova range */
+	struct vfio_bitmap bitmap;
+};
+
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,8,0) */
+
 #ifdef __cplusplus
 }
 #endif