Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / m68k / include / asm / irqflags.h

diff --git a/kernel/arch/m68k/include/asm/irqflags.h b/kernel/arch/m68k/include/asm/irqflags.h
new file mode 100644 (file)
index 0000000..a823cd7
--- /dev/null
+++ b/kernel/arch/m68k/include/asm/irqflags.h
@@ -0,0 +1,82 @@
+#ifndef _M68K_IRQFLAGS_H
+#define _M68K_IRQFLAGS_H
+
+#include <linux/types.h>
+#ifdef CONFIG_MMU
+#include <linux/preempt_mask.h>
+#endif
+#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)
+{
+       if (MACH_IS_ATARI) {
+               /* Ignore HSYNC = ipl 2 on Atari */
+               return (flags & ~(ALLOWINT | 0x200)) != 0;
+       }
+       return (flags & ~ALLOWINT) != 0;
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+       return arch_irqs_disabled_flags(arch_local_save_flags());
+}
+
+#endif /* _M68K_IRQFLAGS_H */