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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-08 11:38:42 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-08 11:38:42 -0700 |
commit | 49b75b87ce2dfbd99e59a50c3681b154d07e3a22 (patch) | |
tree | f14e1da19a13d87a512f9043c2f37fd75dd122b3 /arch/avr32/include/asm/irqflags.h | |
parent | f1c7f79b6ab4f7ada002a0fae47f462ede6b6857 (diff) | |
parent | 097d9eb537ff4d88b74c3fe67392e27c478ca3c5 (diff) | |
download | blackbird-op-linux-49b75b87ce2dfbd99e59a50c3681b154d07e3a22.tar.gz blackbird-op-linux-49b75b87ce2dfbd99e59a50c3681b154d07e3a22.zip |
Merge branch 'for-linus-merged' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus-merged' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 5177/1: arm/mach-sa1100/Makefile: remove CONFIG_SA1100_USB
[ARM] 5166/1: magician: add MAINTAINERS entry
[ARM] fix pnx4008 build errors
[ARM] Fix SMP booting with non-zero PHYS_OFFSET
[ARM] 5185/1: Fix spi num_chipselect for lubbock
[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
[ARM] Add support for arch/arm/mach-*/include and arch/arm/plat-*/include
[ARM] Remove asm/hardware.h, use asm/arch/hardware.h instead
[ARM] Eliminate useless includes of asm/mach-types.h
[ARM] Fix circular include dependency with IRQ headers
avr32: Use <mach/foo.h> instead of <asm/arch/foo.h>
avr32: Introduce arch/avr32/mach-*/include/mach
avr32: Move include/asm-avr32 to arch/avr32/include/asm
[ARM] sa1100_wdt: use reset_status to remember watchdog reset status
[ARM] pxa: introduce reset_status and clear_reset_status for driver's usage
[ARM] pxa: introduce reset.h for reset specific header information
Diffstat (limited to 'arch/avr32/include/asm/irqflags.h')
-rw-r--r-- | arch/avr32/include/asm/irqflags.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/arch/avr32/include/asm/irqflags.h b/arch/avr32/include/asm/irqflags.h new file mode 100644 index 000000000000..93570daac38a --- /dev/null +++ b/arch/avr32/include/asm/irqflags.h @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2004-2006 Atmel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __ASM_AVR32_IRQFLAGS_H +#define __ASM_AVR32_IRQFLAGS_H + +#include <asm/sysreg.h> + +static inline unsigned long __raw_local_save_flags(void) +{ + return sysreg_read(SR); +} + +#define raw_local_save_flags(x) \ + do { (x) = __raw_local_save_flags(); } while (0) + +/* + * This will restore ALL status register flags, not only the interrupt + * mask flag. + * + * The empty asm statement informs the compiler of this fact while + * also serving as a barrier. + */ +static inline void raw_local_irq_restore(unsigned long flags) +{ + sysreg_write(SR, flags); + asm volatile("" : : : "memory", "cc"); +} + +static inline void raw_local_irq_disable(void) +{ + asm volatile("ssrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory"); +} + +static inline void raw_local_irq_enable(void) +{ + asm volatile("csrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory"); +} + +static inline int raw_irqs_disabled_flags(unsigned long flags) +{ + return (flags & SYSREG_BIT(GM)) != 0; +} + +static inline int raw_irqs_disabled(void) +{ + unsigned long flags = __raw_local_save_flags(); + + return raw_irqs_disabled_flags(flags); +} + +static inline unsigned long __raw_local_irq_save(void) +{ + unsigned long flags = __raw_local_save_flags(); + + raw_local_irq_disable(); + + return flags; +} + +#define raw_local_irq_save(flags) \ + do { (flags) = __raw_local_irq_save(); } while (0) + +#endif /* __ASM_AVR32_IRQFLAGS_H */ |