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-rw-r--r--arch/m32r/include/asm/irqflags.h104
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 */
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