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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/ia64/include/asm/mmiowb.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/ia64/include/asm/mmiowb.h')
-rw-r--r--arch/ia64/include/asm/mmiowb.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/mmiowb.h b/arch/ia64/include/asm/mmiowb.h
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+++ b/arch/ia64/include/asm/mmiowb.h
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+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _ASM_IA64_MMIOWB_H
+#define _ASM_IA64_MMIOWB_H
+
+/**
+ * mmiowb - I/O write barrier
+ *
+ * Ensure ordering of I/O space writes. This will make sure that writes
+ * following the barrier will arrive after all previous writes. For most
+ * ia64 platforms, this is a simple 'mf.a' instruction.
+ */
+#define mmiowb() ia64_mfa()
+
+#include <asm-generic/mmiowb.h>
+
+#endif /* _ASM_IA64_MMIOWB_H */