From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 arch/score/include/asm/irqflags.h | 120 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 arch/score/include/asm/irqflags.h

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

diff --git a/arch/score/include/asm/irqflags.h b/arch/score/include/asm/irqflags.h
new file mode 100644
index 000000000..37c6ac9dd
--- /dev/null
+++ b/arch/score/include/asm/irqflags.h
@@ -0,0 +1,120 @@
+#ifndef _ASM_SCORE_IRQFLAGS_H
+#define _ASM_SCORE_IRQFLAGS_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+static inline unsigned long arch_local_save_flags(void)
+{
+	unsigned long flags;
+
+	asm volatile(
+		"	mfcr	r8, cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	mv	%0, r8		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	ldi	r9, 0x1		\n"
+		"	and	%0, %0, r9	\n"
+		: "=r" (flags)
+		:
+		: "r8", "r9");
+	return flags;
+}
+
+static inline unsigned long arch_local_irq_save(void)
+{
+	unsigned long flags;
+
+	asm volatile(
+		"	mfcr	r8, cr0		\n"
+		"	li	r9, 0xfffffffe	\n"
+		"	nop			\n"
+		"	mv	%0, r8		\n"
+		"	and	r8, r8, r9	\n"
+		"	mtcr	r8, cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		: "=r" (flags)
+		:
+		: "r8", "r9", "memory");
+
+	return flags;
+}
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+	asm volatile(
+		"	mfcr	r8, cr0		\n"
+		"	ldi	r9, 0x1		\n"
+		"	and	%0, %0, r9	\n"
+		"	or	r8, r8, %0	\n"
+		"	mtcr	r8, cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		:
+		: "r"(flags)
+		: "r8", "r9", "memory");
+}
+
+static inline void arch_local_irq_enable(void)
+{
+	asm volatile(
+		"	mfcr	r8,cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	ori	r8,0x1		\n"
+		"	mtcr	r8,cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		:
+		:
+		: "r8", "memory");
+}
+
+static inline void arch_local_irq_disable(void)
+{
+	asm volatile(
+		"	mfcr	r8,cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	srli	r8,r8,1		\n"
+		"	slli	r8,r8,1		\n"
+		"	mtcr	r8,cr0		\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		"	nop			\n"
+		:
+		:
+		: "r8", "memory");
+}
+
+static inline bool arch_irqs_disabled_flags(unsigned long flags)
+{
+	return !(flags & 1);
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+	return arch_irqs_disabled_flags(arch_local_save_flags());
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_SCORE_IRQFLAGS_H */
-- 
cgit v1.2.3-54-g00ecf