1 files changed, 76 insertions, 0 deletions

diff --git a/arch/m68k/include/asm/irqflags.h b/arch/m68k/include/asm/irqflags.h
new file mode 100644
index 000000000000..4a5b284a1550
--- /dev/null
+++ b/arch/m68k/include/asm/irqflags.h
@@ -0,0 +1,76 @@
+#ifndef _M68K_IRQFLAGS_H
+#define _M68K_IRQFLAGS_H
+
+#include <linux/types.h>
+#include <linux/hardirq.h>
+#include <linux/preempt.h>
+#include <asm/thread_info.h>
+#include <asm/entry.h>
+
+static inline unsigned long arch_local_save_flags(void)
+{
+        unsigned long flags;
+        asm volatile ("movew %%sr,%0" : "=d" (flags) : : "memory");
+        return flags;
+}
+
+static inline void arch_local_irq_disable(void)
+{
+#ifdef CONFIG_COLDFIRE
+        asm volatile (
+                "move   %/sr,%%d0       \n\t"
+                "ori.l  #0x0700,%%d0    \n\t"
+                "move   %%d0,%/sr       \n"
+                : /* no outputs */
+                :
+                : "cc", "%d0", "memory");
+#else
+        asm volatile ("oriw  #0x0700,%%sr" : : : "memory");
+#endif
+}
+
+static inline void arch_local_irq_enable(void)
+{
+#if defined(CONFIG_COLDFIRE)
+        asm volatile (
+                "move   %/sr,%%d0       \n\t"
+                "andi.l #0xf8ff,%%d0    \n\t"
+                "move   %%d0,%/sr       \n"
+                : /* no outputs */
+                :
+                : "cc", "%d0", "memory");
+#else
+# if defined(CONFIG_MMU)
+        if (MACH_IS_Q40 || !hardirq_count())
+# endif
+                asm volatile (
+                        "andiw %0,%%sr"
+                        :
+                        : "i" (ALLOWINT)
+                        : "memory");
+#endif
+}
+
+static inline unsigned long arch_local_irq_save(void)
+{
+        unsigned long flags = arch_local_save_flags();
+        arch_local_irq_disable();
+        return flags;
+}
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+        asm volatile ("movew %0,%%sr" : : "d" (flags) : "memory");
+}
+
+static inline bool arch_irqs_disabled_flags(unsigned long flags)
+{
+        return (flags & ~ALLOWINT) != 0;
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+        return arch_irqs_disabled_flags(arch_local_save_flags());
+}
+
+#endif /* _M68K_IRQFLAGS_H */