Merge branch 'master' into tk71

[mv-sheeva.git] / arch / alpha / include / asm / irqflags.h

diff --git a/arch/alpha/include/asm/irqflags.h b/arch/alpha/include/asm/irqflags.h
new file mode 100644 (file)
index 0000000..299bbc7
--- /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 */