Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 50 insertions, 0 deletions

diff --git a/drivers/iommu/dma-iommu.h b/drivers/iommu/dma-iommu.h
new file mode 100644
index 000000000..c829f1f82
--- /dev/null
+++ b/drivers/iommu/dma-iommu.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2014-2015 ARM Ltd.
+ */
+#ifndef __DMA_IOMMU_H
+#define __DMA_IOMMU_H
+
+#include <linux/iommu.h>
+
+#ifdef CONFIG_IOMMU_DMA
+
+int iommu_get_dma_cookie(struct iommu_domain *domain);
+void iommu_put_dma_cookie(struct iommu_domain *domain);
+
+int iommu_dma_init_fq(struct iommu_domain *domain);
+
+void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list);
+
+extern bool iommu_dma_forcedac;
+static inline void iommu_dma_set_pci_32bit_workaround(struct device *dev)
+{
+	dev->iommu->pci_32bit_workaround = !iommu_dma_forcedac;
+}
+
+#else /* CONFIG_IOMMU_DMA */
+
+static inline int iommu_dma_init_fq(struct iommu_domain *domain)
+{
+	return -EINVAL;
+}
+
+static inline int iommu_get_dma_cookie(struct iommu_domain *domain)
+{
+	return -ENODEV;
+}
+
+static inline void iommu_put_dma_cookie(struct iommu_domain *domain)
+{
+}
+
+static inline void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list)
+{
+}
+
+static inline void iommu_dma_set_pci_32bit_workaround(struct device *dev)
+{
+}
+
+#endif	/* CONFIG_IOMMU_DMA */
+#endif	/* __DMA_IOMMU_H */