112 lines
2.4 KiB
C
112 lines
2.4 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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#include <asm/registers.h>
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# if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
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# define raw_local_irq_save(flags) \
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do { \
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asm volatile (" msrclr %0, %1; \
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nop;" \
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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 raw_local_irq_disable() \
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do { \
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asm volatile (" msrclr r0, %0; \
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nop;" \
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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 raw_local_irq_enable() \
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do { \
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asm volatile (" msrset r0, %0; \
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nop;" \
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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 raw_local_irq_save(flags) \
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do { \
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register unsigned tmp; \
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asm volatile (" mfs %0, rmsr; \
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nop; \
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andi %1, %0, %2; \
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mts rmsr, %1; \
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nop;" \
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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 raw_local_irq_disable() \
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do { \
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register unsigned tmp; \
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asm volatile (" mfs %0, rmsr; \
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nop; \
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andi %0, %0, %1; \
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mts rmsr, %0; \
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nop;" \
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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 raw_local_irq_enable() \
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do { \
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register unsigned tmp; \
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asm volatile (" mfs %0, rmsr; \
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nop; \
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ori %0, %0, %1; \
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mts rmsr, %0; \
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nop;" \
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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 raw_local_irq_restore(flags) \
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do { \
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asm volatile (" mts rmsr, %0; \
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nop;" \
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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 unsigned long get_msr(void)
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{
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unsigned long flags;
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asm volatile (" mfs %0, rmsr; \
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nop;" \
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: "=r"(flags) \
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: \
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: "memory"); \
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return flags;
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}
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#define raw_local_save_flags(flags) ((flags) = get_msr())
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#define raw_irqs_disabled() ((get_msr() & MSR_IE) == 0)
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#define raw_irqs_disabled_flags(flags) ((flags & MSR_IE) == 0)
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#endif /* _ASM_MICROBLAZE_IRQFLAGS_H */
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