linux/arch/microblaze/include/asm/irqflags.h
Michal Simek 4dbdc9a596 microblaze_v8: headers for irq
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>
2009-03-27 14:25:35 +01:00

123 lines
2.7 KiB
C

/*
* Copyright (C) 2006 Atmark Techno, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef _ASM_MICROBLAZE_IRQFLAGS_H
#define _ASM_MICROBLAZE_IRQFLAGS_H
#include <linux/irqflags.h>
# if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
# define local_irq_save(flags) \
do { \
asm volatile ("# local_irq_save \n\t" \
"msrclr %0, %1 \n\t" \
"nop \n\t" \
: "=r"(flags) \
: "i"(MSR_IE) \
: "memory"); \
} while (0)
# define local_irq_disable() \
do { \
asm volatile ("# local_irq_disable \n\t" \
"msrclr r0, %0 \n\t" \
"nop \n\t" \
: \
: "i"(MSR_IE) \
: "memory"); \
} while (0)
# define local_irq_enable() \
do { \
asm volatile ("# local_irq_enable \n\t" \
"msrset r0, %0 \n\t" \
"nop \n\t" \
: \
: "i"(MSR_IE) \
: "memory"); \
} while (0)
# else /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR == 0 */
# define local_irq_save(flags) \
do { \
register unsigned tmp; \
asm volatile ("# local_irq_save \n\t" \
"mfs %0, rmsr \n\t" \
"nop \n\t" \
"andi %1, %0, %2 \n\t" \
"mts rmsr, %1 \n\t" \
"nop \n\t" \
: "=r"(flags), "=r" (tmp) \
: "i"(~MSR_IE) \
: "memory"); \
} while (0)
# define local_irq_disable() \
do { \
register unsigned tmp; \
asm volatile ("# local_irq_disable \n\t" \
"mfs %0, rmsr \n\t" \
"nop \n\t" \
"andi %0, %0, %1 \n\t" \
"mts rmsr, %0 \n\t" \
"nop \n\t" \
: "=r"(tmp) \
: "i"(~MSR_IE) \
: "memory"); \
} while (0)
# define local_irq_enable() \
do { \
register unsigned tmp; \
asm volatile ("# local_irq_enable \n\t" \
"mfs %0, rmsr \n\t" \
"nop \n\t" \
"ori %0, %0, %1 \n\t" \
"mts rmsr, %0 \n\t" \
"nop \n\t" \
: "=r"(tmp) \
: "i"(MSR_IE) \
: "memory"); \
} while (0)
# endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
#define local_save_flags(flags) \
do { \
asm volatile ("# local_save_flags \n\t" \
"mfs %0, rmsr \n\t" \
"nop \n\t" \
: "=r"(flags) \
: \
: "memory"); \
} while (0)
#define local_irq_restore(flags) \
do { \
asm volatile ("# local_irq_restore \n\t"\
"mts rmsr, %0 \n\t" \
"nop \n\t" \
: \
: "r"(flags) \
: "memory"); \
} while (0)
static inline int irqs_disabled(void)
{
unsigned long flags;
local_save_flags(flags);
return ((flags & MSR_IE) == 0);
}
#define raw_irqs_disabled irqs_disabled
#define raw_irqs_disabled_flags(flags) ((flags) == 0)
#endif /* _ASM_MICROBLAZE_IRQFLAGS_H */