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-rw-r--r--arch/tile/lib/mb_incoherent.S34
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diff --git a/arch/tile/lib/mb_incoherent.S b/arch/tile/lib/mb_incoherent.S
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+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ *
+ * Assembly code for invoking the HV's fence_incoherent syscall.
+ */
+
+#include <linux/linkage.h>
+#include <hv/syscall_public.h>
+#include <arch/abi.h>
+#include <arch/chip.h>
+
+#if !CHIP_HAS_MF_WAITS_FOR_VICTIMS()
+
+/*
+ * Invoke the hypervisor's fence_incoherent syscall, which guarantees
+ * that all victims for cachelines homed on this tile have reached memory.
+ */
+STD_ENTRY(__mb_incoherent)
+ moveli TREG_SYSCALL_NR_NAME, HV_SYS_fence_incoherent
+ swint2
+ jrp lr
+ STD_ENDPROC(__mb_incoherent)
+
+#endif