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

[linux-2.6.git] / include / asm-sparc64 / irqflags.h

diff --git a/include/asm-sparc64/irqflags.h b/include/asm-sparc64/irqflags.h
new file mode 100644 (file)
index 0000000..024fc54
--- /dev/null
+++ b/include/asm-sparc64/irqflags.h
@@ -0,0 +1,89 @@
+/*
+ * include/asm-sparc64/irqflags.h
+ *
+ * IRQ flags handling
+ *
+ * This file gets included from lowlevel asm headers too, to provide
+ * wrapped versions of the local_irq_*() APIs, based on the
+ * raw_local_irq_*() functions from the lowlevel headers.
+ */
+#ifndef _ASM_IRQFLAGS_H
+#define _ASM_IRQFLAGS_H
+
+#ifndef __ASSEMBLY__
+
+static inline unsigned long __raw_local_save_flags(void)
+{
+       unsigned long flags;
+
+       __asm__ __volatile__(
+               "rdpr   %%pil, %0"
+               : "=r" (flags)
+       );
+
+       return flags;
+}
+
+#define raw_local_save_flags(flags) \
+               do { (flags) = __raw_local_save_flags(); } while (0)
+
+static inline void raw_local_irq_restore(unsigned long flags)
+{
+       __asm__ __volatile__(
+               "wrpr   %0, %%pil"
+               : /* no output */
+               : "r" (flags)
+               : "memory"
+       );
+}
+
+static inline void raw_local_irq_disable(void)
+{
+       __asm__ __volatile__(
+               "wrpr   15, %%pil"
+               : /* no outputs */
+               : /* no inputs */
+               : "memory"
+       );
+}
+
+static inline void raw_local_irq_enable(void)
+{
+       __asm__ __volatile__(
+               "wrpr   0, %%pil"
+               : /* no outputs */
+               : /* no inputs */
+               : "memory"
+       );
+}
+
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+       return (flags > 0);
+}
+
+static inline int raw_irqs_disabled(void)
+{
+       unsigned long flags = __raw_local_save_flags();
+
+       return raw_irqs_disabled_flags(flags);
+}
+
+/*
+ * For spinlocks, etc:
+ */
+static inline unsigned long __raw_local_irq_save(void)
+{
+       unsigned long flags = __raw_local_save_flags();
+
+       raw_local_irq_disable();
+
+       return flags;
+}
+
+#define raw_local_irq_save(flags) \
+               do { (flags) = __raw_local_irq_save(); } while (0)
+
+#endif /* (__ASSEMBLY__) */
+
+#endif /* !(_ASM_IRQFLAGS_H) */