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