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-rw-r--r--arch/frv/include/asm/irqflags.h158
-rw-r--r--arch/frv/include/asm/system.h136
2 files changed, 158 insertions, 136 deletions
diff --git a/arch/frv/include/asm/irqflags.h b/arch/frv/include/asm/irqflags.h
new file mode 100644
index 00000000000..82f0b5363f4
--- /dev/null
+++ b/arch/frv/include/asm/irqflags.h
@@ -0,0 +1,158 @@
+/* FR-V interrupt handling
+ *
+ * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_IRQFLAGS_H
+#define _ASM_IRQFLAGS_H
+
+/*
+ * interrupt flag manipulation
+ * - use virtual interrupt management since touching the PSR is slow
+ * - ICC2.Z: T if interrupts virtually disabled
+ * - ICC2.C: F if interrupts really disabled
+ * - if Z==1 upon interrupt:
+ * - C is set to 0
+ * - interrupts are really disabled
+ * - entry.S returns immediately
+ * - uses TIHI (TRAP if Z==0 && C==0) #2 to really reenable interrupts
+ * - if taken, the trap:
+ * - sets ICC2.C
+ * - enables interrupts
+ */
+static inline void arch_local_irq_disable(void)
+{
+ /* set Z flag, but don't change the C flag */
+ asm volatile(" andcc gr0,gr0,gr0,icc2 \n"
+ :
+ :
+ : "memory", "icc2"
+ );
+}
+
+static inline void arch_local_irq_enable(void)
+{
+ /* clear Z flag and then test the C flag */
+ asm volatile(" oricc gr0,#1,gr0,icc2 \n"
+ " tihi icc2,gr0,#2 \n"
+ :
+ :
+ : "memory", "icc2"
+ );
+}
+
+static inline unsigned long arch_local_save_flags(void)
+{
+ unsigned long flags;
+
+ asm volatile("movsg ccr,%0"
+ : "=r"(flags)
+ :
+ : "memory");
+
+ /* shift ICC2.Z to bit 0 */
+ flags >>= 26;
+
+ /* make flags 1 if interrupts disabled, 0 otherwise */
+ return flags & 1UL;
+
+}
+
+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)
+{
+ /* load the Z flag by turning 1 if disabled into 0 if disabled
+ * and thus setting the Z flag but not the C flag */
+ asm volatile(" xoricc %0,#1,gr0,icc2 \n"
+ /* then trap if Z=0 and C=0 */
+ " tihi icc2,gr0,#2 \n"
+ :
+ : "r"(flags)
+ : "memory", "icc2"
+ );
+
+}
+
+static inline bool arch_irqs_disabled_flags(unsigned long flags)
+{
+ return flags;
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+ return arch_irqs_disabled_flags(arch_local_save_flags());
+}
+
+/*
+ * real interrupt flag manipulation
+ */
+#define __arch_local_irq_disable() \
+do { \
+ unsigned long psr; \
+ asm volatile(" movsg psr,%0 \n" \
+ " andi %0,%2,%0 \n" \
+ " ori %0,%1,%0 \n" \
+ " movgs %0,psr \n" \
+ : "=r"(psr) \
+ : "i" (PSR_PIL_14), "i" (~PSR_PIL) \
+ : "memory"); \
+} while (0)
+
+#define __arch_local_irq_enable() \
+do { \
+ unsigned long psr; \
+ asm volatile(" movsg psr,%0 \n" \
+ " andi %0,%1,%0 \n" \
+ " movgs %0,psr \n" \
+ : "=r"(psr) \
+ : "i" (~PSR_PIL) \
+ : "memory"); \
+} while (0)
+
+#define __arch_local_save_flags(flags) \
+do { \
+ typecheck(unsigned long, flags); \
+ asm("movsg psr,%0" \
+ : "=r"(flags) \
+ : \
+ : "memory"); \
+} while (0)
+
+#define __arch_local_irq_save(flags) \
+do { \
+ unsigned long npsr; \
+ typecheck(unsigned long, flags); \
+ asm volatile(" movsg psr,%0 \n" \
+ " andi %0,%3,%1 \n" \
+ " ori %1,%2,%1 \n" \
+ " movgs %1,psr \n" \
+ : "=r"(flags), "=r"(npsr) \
+ : "i" (PSR_PIL_14), "i" (~PSR_PIL) \
+ : "memory"); \
+} while (0)
+
+#define __arch_local_irq_restore(flags) \
+do { \
+ typecheck(unsigned long, flags); \
+ asm volatile(" movgs %0,psr \n" \
+ : \
+ : "r" (flags) \
+ : "memory"); \
+} while (0)
+
+#define __arch_irqs_disabled() \
+ ((__get_PSR() & PSR_PIL) >= PSR_PIL_14)
+
+#endif /* _ASM_IRQFLAGS_H */
diff --git a/arch/frv/include/asm/system.h b/arch/frv/include/asm/system.h
index efd22d9077a..0a6d8d9ca45 100644
--- a/arch/frv/include/asm/system.h
+++ b/arch/frv/include/asm/system.h
@@ -37,142 +37,6 @@ do { \
} while(0)
/*
- * interrupt flag manipulation
- * - use virtual interrupt management since touching the PSR is slow
- * - ICC2.Z: T if interrupts virtually disabled
- * - ICC2.C: F if interrupts really disabled
- * - if Z==1 upon interrupt:
- * - C is set to 0
- * - interrupts are really disabled
- * - entry.S returns immediately
- * - uses TIHI (TRAP if Z==0 && C==0) #2 to really reenable interrupts
- * - if taken, the trap:
- * - sets ICC2.C
- * - enables interrupts
- */
-#define local_irq_disable() \
-do { \
- /* set Z flag, but don't change the C flag */ \
- asm volatile(" andcc gr0,gr0,gr0,icc2 \n" \
- : \
- : \
- : "memory", "icc2" \
- ); \
-} while(0)
-
-#define local_irq_enable() \
-do { \
- /* clear Z flag and then test the C flag */ \
- asm volatile(" oricc gr0,#1,gr0,icc2 \n" \
- " tihi icc2,gr0,#2 \n" \
- : \
- : \
- : "memory", "icc2" \
- ); \
-} while(0)
-
-#define local_save_flags(flags) \
-do { \
- typecheck(unsigned long, flags); \
- asm volatile("movsg ccr,%0" \
- : "=r"(flags) \
- : \
- : "memory"); \
- \
- /* shift ICC2.Z to bit 0 */ \
- flags >>= 26; \
- \
- /* make flags 1 if interrupts disabled, 0 otherwise */ \
- flags &= 1UL; \
-} while(0)
-
-#define irqs_disabled() \
- ({unsigned long flags; local_save_flags(flags); !!flags; })
-
-#define local_irq_save(flags) \
-do { \
- typecheck(unsigned long, flags); \
- local_save_flags(flags); \
- local_irq_disable(); \
-} while(0)
-
-#define local_irq_restore(flags) \
-do { \
- typecheck(unsigned long, flags); \
- \
- /* load the Z flag by turning 1 if disabled into 0 if disabled \
- * and thus setting the Z flag but not the C flag */ \
- asm volatile(" xoricc %0,#1,gr0,icc2 \n" \
- /* then test Z=0 and C=0 */ \
- " tihi icc2,gr0,#2 \n" \
- : \
- : "r"(flags) \
- : "memory", "icc2" \
- ); \
- \
-} while(0)
-
-/*
- * real interrupt flag manipulation
- */
-#define __local_irq_disable() \
-do { \
- unsigned long psr; \
- asm volatile(" movsg psr,%0 \n" \
- " andi %0,%2,%0 \n" \
- " ori %0,%1,%0 \n" \
- " movgs %0,psr \n" \
- : "=r"(psr) \
- : "i" (PSR_PIL_14), "i" (~PSR_PIL) \
- : "memory"); \
-} while(0)
-
-#define __local_irq_enable() \
-do { \
- unsigned long psr; \
- asm volatile(" movsg psr,%0 \n" \
- " andi %0,%1,%0 \n" \
- " movgs %0,psr \n" \
- : "=r"(psr) \
- : "i" (~PSR_PIL) \
- : "memory"); \
-} while(0)
-
-#define __local_save_flags(flags) \
-do { \
- typecheck(unsigned long, flags); \
- asm("movsg psr,%0" \
- : "=r"(flags) \
- : \
- : "memory"); \
-} while(0)
-
-#define __local_irq_save(flags) \
-do { \
- unsigned long npsr; \
- typecheck(unsigned long, flags); \
- asm volatile(" movsg psr,%0 \n" \
- " andi %0,%3,%1 \n" \
- " ori %1,%2,%1 \n" \
- " movgs %1,psr \n" \
- : "=r"(flags), "=r"(npsr) \
- : "i" (PSR_PIL_14), "i" (~PSR_PIL) \
- : "memory"); \
-} while(0)
-
-#define __local_irq_restore(flags) \
-do { \
- typecheck(unsigned long, flags); \
- asm volatile(" movgs %0,psr \n" \
- : \
- : "r" (flags) \
- : "memory"); \
-} while(0)
-
-#define __irqs_disabled() \
- ((__get_PSR() & PSR_PIL) >= PSR_PIL_14)
-
-/*
* Force strict CPU ordering.
*/
#define nop() asm volatile ("nop"::)
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