1 files changed, 36 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/bitops.h b/arch/xtensa/include/asm/bitops.h
new file mode 100644
index 00000000000..550d12f4986
--- /dev/null
+++ b/arch/xtensa/include/asm/bitops.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2001 - 2012 Tensilica Inc.
+ * Copyright (C) 2014 - 2016 Cadence Design Systems Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _XTENSA_BITOPS_H
+#define _XTENSA_BITOPS_H
+
+#include <asm/system.h>
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/__fls.h>
+#include <asm-generic/bitops/fls64.h>
+#include <asm-generic/bitops/__ffs.h>
+
+static inline int test_bit(int nr, const void *addr)
+{
+	return ((unsigned char *)addr)[nr >> 3] & (1u << (nr & 7));
+}
+
+static inline int test_and_set_bit(int nr, volatile void *addr)
+{
+	unsigned long flags;
+	unsigned char tmp;
+	unsigned char mask = 1u << (nr & 7);
+
+	local_irq_save(flags);
+	tmp = ((unsigned char *)addr)[nr >> 3];
+	((unsigned char *)addr)[nr >> 3] |= mask;
+	local_irq_restore(flags);
+
+	return tmp & mask;
+}
+
+#endif	/* _XTENSA_BITOPS_H */