From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 6 May 2024 03:02:30 +0200
Subject: Adding upstream version 4.19.249.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/ia64/kernel/dma-mapping.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 arch/ia64/kernel/dma-mapping.c

(limited to 'arch/ia64/kernel/dma-mapping.c')

diff --git a/arch/ia64/kernel/dma-mapping.c b/arch/ia64/kernel/dma-mapping.c
new file mode 100644
index 000000000..7a471d8d6
--- /dev/null
+++ b/arch/ia64/kernel/dma-mapping.c
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/dma-mapping.h>
+#include <linux/swiotlb.h>
+#include <linux/export.h>
+
+/* Set this to 1 if there is a HW IOMMU in the system */
+int iommu_detected __read_mostly;
+
+const struct dma_map_ops *dma_ops;
+EXPORT_SYMBOL(dma_ops);
+
+const struct dma_map_ops *dma_get_ops(struct device *dev)
+{
+	return dma_ops;
+}
+EXPORT_SYMBOL(dma_get_ops);
+
+#ifdef CONFIG_SWIOTLB
+void __init swiotlb_dma_init(void)
+{
+	dma_ops = &swiotlb_dma_ops;
+	swiotlb_init(1);
+}
+#endif
-- 
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