/*
|
* Copyright (C) 2011 Andes Technology Corporation
|
* Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
|
*
|
* SPDX-License-Identifier: GPL-2.0+
|
*/
|
|
#ifndef __ASM_NDS_SYSTEM_H
|
#define __ASM_NDS_SYSTEM_H
|
|
/*
|
* Interrupt configuring macros.
|
*/
|
|
extern int irq_flags;
|
|
#define local_irq_enable() \
|
__asm__ __volatile__ ( \
|
"mfsr %0, $psw\n\t" \
|
"andi %0, %0, 0x1\n\t" \
|
"setgie.e\n\t" \
|
: \
|
: "r" (irq_flags) \
|
)
|
|
#define local_irq_disable() \
|
do { \
|
int __tmp_dummy; \
|
__asm__ __volatile__ ( \
|
"mfsr %0, $psw\n\t" \
|
"andi %0, %0, 0x1\n\t" \
|
"setgie.d\n\t" \
|
"dsb\n\t" \
|
: "=r" (__tmp_dummy) \
|
); \
|
} while (0)
|
|
#define local_irq_save(x) \
|
__asm__ __volatile__ ( \
|
"mfsr %0, $psw\n\t" \
|
"andi %0, %0, 0x1\n\t" \
|
"setgie.d\n\t" \
|
"dsb\n\t" \
|
: "=&r" (x) \
|
)
|
|
#define local_save_flags(x) \
|
__asm__ __volatile__ ( \
|
"mfsr %0, $psw\n\t" \
|
"andi %0, %0, 0x1\n\t" \
|
"setgie.e\n\t" \
|
"setgie.d\n\t" \
|
: "=r" (x) \
|
)
|
|
#define irqs_enabled_from_flags(x) ((x) != 0x1f)
|
|
#define local_irq_restore(x) \
|
do { \
|
if (irqs_enabled_from_flags(x)) \
|
local_irq_enable(); \
|
} while (0)
|
|
/*
|
* Force strict CPU ordering.
|
*/
|
#define nop() asm volatile ("nop;\n\t" : : )
|
#define mb() asm volatile ("" : : : "memory")
|
#define rmb() asm volatile ("" : : : "memory")
|
#define wmb() asm volatile ("" : : : "memory")
|
|
#endif /* __ASM_NDS_SYSTEM_H */
|
