1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Copyright (C) 2011 Andes Technology Corporation 3*4882a593Smuzhiyun * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #ifndef __ASM_NDS_SYSTEM_H 9*4882a593Smuzhiyun #define __ASM_NDS_SYSTEM_H 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun /* 12*4882a593Smuzhiyun * Interrupt configuring macros. 13*4882a593Smuzhiyun */ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun extern int irq_flags; 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun #define local_irq_enable() \ 18*4882a593Smuzhiyun __asm__ __volatile__ ( \ 19*4882a593Smuzhiyun "mfsr %0, $psw\n\t" \ 20*4882a593Smuzhiyun "andi %0, %0, 0x1\n\t" \ 21*4882a593Smuzhiyun "setgie.e\n\t" \ 22*4882a593Smuzhiyun : \ 23*4882a593Smuzhiyun : "r" (irq_flags) \ 24*4882a593Smuzhiyun ) 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun #define local_irq_disable() \ 27*4882a593Smuzhiyun do { \ 28*4882a593Smuzhiyun int __tmp_dummy; \ 29*4882a593Smuzhiyun __asm__ __volatile__ ( \ 30*4882a593Smuzhiyun "mfsr %0, $psw\n\t" \ 31*4882a593Smuzhiyun "andi %0, %0, 0x1\n\t" \ 32*4882a593Smuzhiyun "setgie.d\n\t" \ 33*4882a593Smuzhiyun "dsb\n\t" \ 34*4882a593Smuzhiyun : "=r" (__tmp_dummy) \ 35*4882a593Smuzhiyun ); \ 36*4882a593Smuzhiyun } while (0) 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun #define local_irq_save(x) \ 39*4882a593Smuzhiyun __asm__ __volatile__ ( \ 40*4882a593Smuzhiyun "mfsr %0, $psw\n\t" \ 41*4882a593Smuzhiyun "andi %0, %0, 0x1\n\t" \ 42*4882a593Smuzhiyun "setgie.d\n\t" \ 43*4882a593Smuzhiyun "dsb\n\t" \ 44*4882a593Smuzhiyun : "=&r" (x) \ 45*4882a593Smuzhiyun ) 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun #define local_save_flags(x) \ 48*4882a593Smuzhiyun __asm__ __volatile__ ( \ 49*4882a593Smuzhiyun "mfsr %0, $psw\n\t" \ 50*4882a593Smuzhiyun "andi %0, %0, 0x1\n\t" \ 51*4882a593Smuzhiyun "setgie.e\n\t" \ 52*4882a593Smuzhiyun "setgie.d\n\t" \ 53*4882a593Smuzhiyun : "=r" (x) \ 54*4882a593Smuzhiyun ) 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun #define irqs_enabled_from_flags(x) ((x) != 0x1f) 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun #define local_irq_restore(x) \ 59*4882a593Smuzhiyun do { \ 60*4882a593Smuzhiyun if (irqs_enabled_from_flags(x)) \ 61*4882a593Smuzhiyun local_irq_enable(); \ 62*4882a593Smuzhiyun } while (0) 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun /* 65*4882a593Smuzhiyun * Force strict CPU ordering. 66*4882a593Smuzhiyun */ 67*4882a593Smuzhiyun #define nop() asm volatile ("nop;\n\t" : : ) 68*4882a593Smuzhiyun #define mb() asm volatile ("" : : : "memory") 69*4882a593Smuzhiyun #define rmb() asm volatile ("" : : : "memory") 70*4882a593Smuzhiyun #define wmb() asm volatile ("" : : : "memory") 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun #endif /* __ASM_NDS_SYSTEM_H */ 73