1 files changed, 67 insertions, 0 deletions

diff --git a/arch/alpha/include/asm/irqflags.h b/arch/alpha/include/asm/irqflags.h
new file mode 100644
index 000000000000..299bbc7e9d71
--- /dev/null
+++ b/arch/alpha/include/asm/irqflags.h
@@ -0,0 +1,67 @@
+#ifndef __ALPHA_IRQFLAGS_H
+#define __ALPHA_IRQFLAGS_H
+
+#include <asm/system.h>
+
+#define IPL_MIN         0
+#define IPL_SW0         1
+#define IPL_SW1         2
+#define IPL_DEV0        3
+#define IPL_DEV1        4
+#define IPL_TIMER       5
+#define IPL_PERF        6
+#define IPL_POWERFAIL   6
+#define IPL_MCHECK      7
+#define IPL_MAX         7
+
+#ifdef CONFIG_ALPHA_BROKEN_IRQ_MASK
+#undef IPL_MIN
+#define IPL_MIN         __min_ipl
+extern int __min_ipl;
+#endif
+
+#define getipl()                (rdps() & 7)
+#define setipl(ipl)             ((void) swpipl(ipl))
+
+static inline unsigned long arch_local_save_flags(void)
+{
+        return rdps();
+}
+
+static inline void arch_local_irq_disable(void)
+{
+        setipl(IPL_MAX);
+        barrier();
+}
+
+static inline unsigned long arch_local_irq_save(void)
+{
+        unsigned long flags = swpipl(IPL_MAX);
+        barrier();
+        return flags;
+}
+
+static inline void arch_local_irq_enable(void)
+{
+        barrier();
+        setipl(IPL_MIN);
+}
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+        barrier();
+        setipl(flags);
+        barrier();
+}
+
+static inline bool arch_irqs_disabled_flags(unsigned long flags)
+{
+        return flags == IPL_MAX;
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+        return arch_irqs_disabled_flags(getipl());
+}
+
+#endif /* __ALPHA_IRQFLAGS_H */