1 files changed, 58 insertions, 0 deletions

diff --git a/arch/xtensa/include/asm/irqflags.h b/arch/xtensa/include/asm/irqflags.h
new file mode 100644
index 000000000000..dae9a8bdcb17
--- /dev/null
+++ b/arch/xtensa/include/asm/irqflags.h
@@ -0,0 +1,58 @@
+/*
+ * Xtensa IRQ flags handling functions
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_IRQFLAGS_H
+#define _XTENSA_IRQFLAGS_H
+
+#include <linux/types.h>
+
+static inline unsigned long arch_local_save_flags(void)
+{
+        unsigned long flags;
+        asm volatile("rsr %0,"__stringify(PS) : "=a" (flags));
+        return flags;
+}
+
+static inline unsigned long arch_local_irq_save(void)
+{
+        unsigned long flags;
+        asm volatile("rsil %0, "__stringify(LOCKLEVEL)
+                     : "=a" (flags) :: "memory");
+        return flags;
+}
+
+static inline void arch_local_irq_disable(void)
+{
+        arch_local_irq_save();
+}
+
+static inline void arch_local_irq_enable(void)
+{
+        unsigned long flags;
+        asm volatile("rsil %0, 0" : "=a" (flags) :: "memory");
+}
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+        asm volatile("wsr %0, "__stringify(PS)" ; rsync"
+                     :: "a" (flags) : "memory");
+}
+
+static inline bool arch_irqs_disabled_flags(unsigned long flags)
+{
+        return (flags & 0xf) != 0;
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+        return arch_irqs_disabled_flags(arch_local_save_flags());
+}
+
+#endif /* _XTENSA_IRQFLAGS_H */