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- /*
- * 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 */
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