From 58e0166a4772aaeb10c9b0f6d59f19099d2047df Mon Sep 17 00:00:00 2001 From: Jonas Bonn Date: Sat, 4 Jun 2011 22:43:49 +0300 Subject: OpenRISC: Headers Signed-off-by: Jonas Bonn Reviewed-by: Arnd Bergmann --- arch/openrisc/include/asm/spr.h | 42 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 arch/openrisc/include/asm/spr.h (limited to 'arch/openrisc/include/asm/spr.h') diff --git a/arch/openrisc/include/asm/spr.h b/arch/openrisc/include/asm/spr.h new file mode 100644 index 0000000..1cccb42 --- /dev/null +++ b/arch/openrisc/include/asm/spr.h @@ -0,0 +1,42 @@ +/* + * OpenRISC Linux + * + * Linux architectural port borrowing liberally from similar works of + * others. All original copyrights apply as per the original source + * declaration. + * + * OpenRISC implementation: + * Copyright (C) 2010-2011 Jonas Bonn + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __ASM_OPENRISC_SPR_H +#define __ASM_OPENRISC_SPR_H + +#define mtspr(_spr, _val) __asm__ __volatile__ ( \ + "l.mtspr r0,%1,%0" \ + : : "K" (_spr), "r" (_val)) +#define mtspr_off(_spr, _off, _val) __asm__ __volatile__ ( \ + "l.mtspr %0,%1,%2" \ + : : "r" (_off), "r" (_val), "K" (_spr)) + +static inline unsigned long mfspr(unsigned long add) +{ + unsigned long ret; + __asm__ __volatile__ ("l.mfspr %0,r0,%1" : "=r" (ret) : "K" (add)); + return ret; +} + +static inline unsigned long mfspr_off(unsigned long add, unsigned long offset) +{ + unsigned long ret; + __asm__ __volatile__ ("l.mfspr %0,%1,%2" : "=r" (ret) + : "r" (offset), "K" (add)); + return ret; +} + +#endif -- cgit v1.1