124 lines
2.7 KiB
C
124 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 */
|