1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * OpenRISC Linux 4 * 5 * Linux architectural port borrowing liberally from similar works of 6 * others. All original copyrights apply as per the original source 7 * declaration. 8 * 9 * OpenRISC implementation: 10 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> 11 */ 12 13 #ifndef __ASM_OPENRISC_SPR_H 14 #define __ASM_OPENRISC_SPR_H 15 16 #define mtspr(_spr, _val) __asm__ __volatile__ ( \ 17 "l.mtspr r0,%1,%0" \ 18 : : "K" (_spr), "r" (_val)) 19 #define mtspr_off(_spr, _off, _val) __asm__ __volatile__ ( \ 20 "l.mtspr %0,%1,%2" \ 21 : : "r" (_off), "r" (_val), "K" (_spr)) 22 23 static inline unsigned long mfspr(unsigned long add) 24 { 25 unsigned long ret; 26 __asm__ __volatile__ ("l.mfspr %0,r0,%1" : "=r" (ret) : "K" (add)); 27 return ret; 28 } 29 30 static inline unsigned long mfspr_off(unsigned long add, unsigned long offset) 31 { 32 unsigned long ret; 33 __asm__ __volatile__ ("l.mfspr %0,%1,%2" : "=r" (ret) 34 : "r" (offset), "K" (add)); 35 return ret; 36 } 37 38 #endif 39