Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/drivers/iommu/iommu-priv.h b/drivers/iommu/iommu-priv.h
new file mode 100644
index 0000000000..2024a23133
--- /dev/null
+++ b/drivers/iommu/iommu-priv.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES.
+ */
+#ifndef __LINUX_IOMMU_PRIV_H
+#define __LINUX_IOMMU_PRIV_H
+
+#include <linux/iommu.h>
+
+static inline const struct iommu_ops *dev_iommu_ops(struct device *dev)
+{
+	/*
+	 * Assume that valid ops must be installed if iommu_probe_device()
+	 * has succeeded. The device ops are essentially for internal use
+	 * within the IOMMU subsystem itself, so we should be able to trust
+	 * ourselves not to misuse the helper.
+	 */
+	return dev->iommu->iommu_dev->ops;
+}
+
+int iommu_group_replace_domain(struct iommu_group *group,
+			       struct iommu_domain *new_domain);
+
+int iommu_device_register_bus(struct iommu_device *iommu,
+			      const struct iommu_ops *ops, struct bus_type *bus,
+			      struct notifier_block *nb);
+void iommu_device_unregister_bus(struct iommu_device *iommu,
+				 struct bus_type *bus,
+				 struct notifier_block *nb);
+
+#endif /* __LINUX_IOMMU_PRIV_H */