4dbdc9a596
Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
124 lines
2.7 KiB
C
124 lines
2.7 KiB
C
/*
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* Copyright (C) 2006 Atmark Techno, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef _ASM_MICROBLAZE_IRQFLAGS_H
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#define _ASM_MICROBLAZE_IRQFLAGS_H
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#include <linux/irqflags.h>
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# if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
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# define local_irq_save(flags) \
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do { \
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asm volatile ("# local_irq_save \n\t" \
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"msrclr %0, %1 \n\t" \
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"nop \n\t" \
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: "=r"(flags) \
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: "i"(MSR_IE) \
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: "memory"); \
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} while (0)
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# define local_irq_disable() \
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do { \
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asm volatile ("# local_irq_disable \n\t" \
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"msrclr r0, %0 \n\t" \
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"nop \n\t" \
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: \
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: "i"(MSR_IE) \
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: "memory"); \
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} while (0)
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# define local_irq_enable() \
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do { \
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asm volatile ("# local_irq_enable \n\t" \
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"msrset r0, %0 \n\t" \
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"nop \n\t" \
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: \
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: "i"(MSR_IE) \
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: "memory"); \
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} while (0)
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# else /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR == 0 */
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# define local_irq_save(flags) \
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do { \
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register unsigned tmp; \
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asm volatile ("# local_irq_save \n\t" \
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"mfs %0, rmsr \n\t" \
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"nop \n\t" \
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"andi %1, %0, %2 \n\t" \
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"mts rmsr, %1 \n\t" \
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"nop \n\t" \
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: "=r"(flags), "=r" (tmp) \
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: "i"(~MSR_IE) \
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: "memory"); \
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} while (0)
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# define local_irq_disable() \
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do { \
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register unsigned tmp; \
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asm volatile ("# local_irq_disable \n\t" \
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"mfs %0, rmsr \n\t" \
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"nop \n\t" \
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"andi %0, %0, %1 \n\t" \
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"mts rmsr, %0 \n\t" \
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"nop \n\t" \
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: "=r"(tmp) \
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: "i"(~MSR_IE) \
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: "memory"); \
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} while (0)
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# define local_irq_enable() \
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do { \
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register unsigned tmp; \
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asm volatile ("# local_irq_enable \n\t" \
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"mfs %0, rmsr \n\t" \
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"nop \n\t" \
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"ori %0, %0, %1 \n\t" \
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"mts rmsr, %0 \n\t" \
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"nop \n\t" \
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: "=r"(tmp) \
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: "i"(MSR_IE) \
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: "memory"); \
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} while (0)
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# endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
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#define local_save_flags(flags) \
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do { \
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asm volatile ("# local_save_flags \n\t" \
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"mfs %0, rmsr \n\t" \
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"nop \n\t" \
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: "=r"(flags) \
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: \
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: "memory"); \
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} while (0)
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#define local_irq_restore(flags) \
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do { \
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asm volatile ("# local_irq_restore \n\t"\
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"mts rmsr, %0 \n\t" \
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"nop \n\t" \
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: \
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: "r"(flags) \
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: "memory"); \
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} while (0)
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static inline int irqs_disabled(void)
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{
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unsigned long flags;
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local_save_flags(flags);
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return ((flags & MSR_IE) == 0);
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}
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#define raw_irqs_disabled irqs_disabled
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#define raw_irqs_disabled_flags(flags) ((flags) == 0)
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#endif /* _ASM_MICROBLAZE_IRQFLAGS_H */
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