50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2003 Ralf Baechle
|
|
*/
|
|
#ifndef _ASM_HAZARDS_H
|
|
#define _ASM_HAZARDS_H
|
|
|
|
#include <linux/config.h>
|
|
|
|
#ifdef __ASSEMBLY__
|
|
|
|
/*
|
|
* RM9000 hazards. When the JTLB is updated by tlbwi or tlbwr, a subsequent
|
|
* use of the JTLB for instructions should not occur for 4 cpu cycles and use
|
|
* for data translations should not occur for 3 cpu cycles.
|
|
*/
|
|
#ifdef CONFIG_CPU_RM9000
|
|
#define rm9000_tlb_hazard \
|
|
.set push; \
|
|
.set mips32; \
|
|
ssnop; ssnop; ssnop; ssnop; \
|
|
.set pop
|
|
#else
|
|
#define rm9000_tlb_hazard
|
|
#endif
|
|
|
|
#else
|
|
|
|
/*
|
|
* RM9000 hazards. When the JTLB is updated by tlbwi or tlbwr, a subsequent
|
|
* use of the JTLB for instructions should not occur for 4 cpu cycles and use
|
|
* for data translations should not occur for 3 cpu cycles.
|
|
*/
|
|
#ifdef CONFIG_CPU_RM9000
|
|
#define rm9000_tlb_hazard() \
|
|
__asm__ __volatile__( \
|
|
".set\tmips32\n\t" \
|
|
"ssnop; ssnop; ssnop; ssnop\n\t" \
|
|
".set\tmips0")
|
|
#else
|
|
#define rm9000_tlb_hazard() do { } while (0)
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#endif /* _ASM_HAZARDS_H */
|