This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-s390 / irqflags.h

diff --git a/include/asm-s390/irqflags.h b/include/asm-s390/irqflags.h
new file mode 100644 (file)
index 0000000..3b566a5
--- /dev/null
+++ b/include/asm-s390/irqflags.h
@@ -0,0 +1,56 @@
+/*
+ *  include/asm-s390/irqflags.h
+ *
+ *    Copyright (C) IBM Corp. 2006
+ *    Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
+ */
+
+#ifndef __ASM_IRQFLAGS_H
+#define __ASM_IRQFLAGS_H
+
+#ifdef __KERNEL__
+
+/* interrupt control.. */
+#define raw_local_irq_enable() ({ \
+       unsigned long  __dummy; \
+       __asm__ __volatile__ ( \
+               "stosm 0(%1),0x03" \
+               : "=m" (__dummy) : "a" (&__dummy) : "memory" ); \
+       })
+
+#define raw_local_irq_disable() ({ \
+       unsigned long __flags; \
+       __asm__ __volatile__ ( \
+               "stnsm 0(%1),0xfc" : "=m" (__flags) : "a" (&__flags) ); \
+       __flags; \
+       })
+
+#define raw_local_save_flags(x)                                                        \
+do {                                                                           \
+       typecheck(unsigned long, x);                                            \
+       __asm__ __volatile__("stosm 0(%1),0" : "=m" (x) : "a" (&x), "m" (x) );  \
+} while (0)
+
+#define raw_local_irq_restore(x)                                               \
+do {                                                                           \
+       typecheck(unsigned long, x);                                            \
+       __asm__ __volatile__("ssm   0(%0)" : : "a" (&x), "m" (x) : "memory");   \
+} while (0)
+
+#define raw_irqs_disabled()            \
+({                                     \
+       unsigned long flags;            \
+       raw_local_save_flags(flags);    \
+       !((flags >> __FLAG_SHIFT) & 3); \
+})
+
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+       return !((flags >> __FLAG_SHIFT) & 3);
+}
+
+/* For spinlocks etc */
+#define raw_local_irq_save(x)  ((x) = raw_local_irq_disable())
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_IRQFLAGS_H */