1 files changed, 104 insertions, 0 deletions
diff --git a/arch/m32r/include/asm/irqflags.h b/arch/m32r/include/asm/irqflags.h
new file mode 100644
index 0000000..1f92d29
--- /dev/null
+++ b/arch/m32r/include/asm/irqflags.h
@@ -0,0 +1,104 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001  Hiroyuki Kondo, Hirokazu Takata, and Hitoshi Yamamoto
+ * Copyright (C) 2004, 2006  Hirokazu Takata <takata at linux-m32r.org>
+ */
+
+#ifndef _ASM_M32R_IRQFLAGS_H
+#define _ASM_M32R_IRQFLAGS_H
+
+#include <linux/types.h>
+
+static inline unsigned long arch_local_save_flags(void)
+{
+	unsigned long flags;
+	asm volatile("mvfc %0,psw" : "=r"(flags));
+	return flags;
+}
+
+static inline void arch_local_irq_disable(void)
+{
+#if !defined(CONFIG_CHIP_M32102) && !defined(CONFIG_CHIP_M32104)
+	asm volatile (
+		"clrpsw #0x40 -> nop"
+		: : : "memory");
+#else
+	unsigned long tmpreg0, tmpreg1;
+	asm volatile (
+		"ld24	%0, #0	; Use 32-bit insn.			\n\t"
+		"mvfc	%1, psw	; No interrupt can be accepted here.	\n\t"
+		"mvtc	%0, psw						\n\t"
+		"and3	%0, %1, #0xffbf					\n\t"
+		"mvtc	%0, psw						\n\t"
+		: "=&r" (tmpreg0), "=&r" (tmpreg1)
+		:
+		: "cbit", "memory");
+#endif
+}
+
+static inline void arch_local_irq_enable(void)
+{
+#if !defined(CONFIG_CHIP_M32102) && !defined(CONFIG_CHIP_M32104)
+	asm volatile (
+		"setpsw #0x40 -> nop"
+		: : : "memory");
+#else
+	unsigned long tmpreg;
+	asm volatile (
+		"mvfc	%0, psw;		\n\t"
+		"or3	%0, %0, #0x0040;	\n\t"
+		"mvtc	%0, psw;		\n\t"
+		: "=&r" (tmpreg)
+		:
+		: "cbit", "memory");
+#endif
+}
+
+static inline unsigned long arch_local_irq_save(void)
+{
+	unsigned long flags;
+
+#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104))
+	asm volatile (
+		"mvfc	%0, psw;	\n\t"
+		"clrpsw	#0x40 -> nop;	\n\t"
+		: "=r" (flags)
+		:
+		: "memory");
+#else
+	unsigned long tmpreg;
+	asm volatile (
+		"ld24	%1, #0		\n\t"
+		"mvfc	%0, psw		\n\t"
+		"mvtc	%1, psw		\n\t"
+		"and3	%1, %0, #0xffbf	\n\t"
+		"mvtc	%1, psw		\n\t"
+		: "=r" (flags), "=&r" (tmpreg)
+		:
+		: "cbit", "memory");
+#endif
+	return flags;
+}
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+	asm volatile("mvtc %0,psw"
+		     :
+		     : "r" (flags)
+		     : "cbit", "memory");
+}
+
+static inline bool arch_irqs_disabled_flags(unsigned long flags)
+{
+	return !(flags & 0x40);
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+	return arch_irqs_disabled_flags(arch_local_save_flags());
+}
+
+#endif /* _ASM_M32R_IRQFLAGS_H */