From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 arch/m68k/include/asm/irqflags.h | 78 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 arch/m68k/include/asm/irqflags.h

(limited to 'arch/m68k/include/asm/irqflags.h')

diff --git a/arch/m68k/include/asm/irqflags.h b/arch/m68k/include/asm/irqflags.h
new file mode 100644
index 00000000..7ef4115b
--- /dev/null
+++ b/arch/m68k/include/asm/irqflags.h
@@ -0,0 +1,78 @@
+#ifndef _M68K_IRQFLAGS_H
+#define _M68K_IRQFLAGS_H
+
+#include <linux/types.h>
+#ifdef CONFIG_MMU
+#include <linux/hardirq.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)
+{
+	return (flags & ~ALLOWINT) != 0;
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+	return arch_irqs_disabled_flags(arch_local_save_flags());
+}
+
+#endif /* _M68K_IRQFLAGS_H */
-- 
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