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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _ASM_POWERPC_VDSO_PROCESSOR_H
#define _ASM_POWERPC_VDSO_PROCESSOR_H
#ifndef __ASSEMBLY__
/* Macros for adjusting thread priority (hardware multi-threading) */
#ifdef CONFIG_PPC64
#define HMT_very_low() asm volatile("or 31, 31, 31 # very low priority")
#define HMT_low() asm volatile("or 1, 1, 1 # low priority")
#define HMT_medium_low() asm volatile("or 6, 6, 6 # medium low priority")
#define HMT_medium() asm volatile("or 2, 2, 2 # medium priority")
#define HMT_medium_high() asm volatile("or 5, 5, 5 # medium high priority")
#define HMT_high() asm volatile("or 3, 3, 3 # high priority")
#else
#define HMT_very_low()
#define HMT_low()
#define HMT_medium_low()
#define HMT_medium()
#define HMT_medium_high()
#define HMT_high()
#endif
#ifdef CONFIG_PPC64
#define cpu_relax() \
asm volatile(ASM_FTR_IFCLR( \
/* Pre-POWER10 uses low ; medium priority nops */ \
"or 1,1,1 ; or 2,2,2", \
/* POWER10 onward uses pause_short (wait 2,0) */ \
PPC_WAIT(2, 0), \
%0) :: "i" (CPU_FTR_ARCH_31) : "memory")
#else
#define cpu_relax() barrier()
#endif
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_VDSO_PROCESSOR_H */
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