1/* SPDX-License-Identifier: GPL-2.0-only */ 2#ifndef _ASM_POWERPC_VDSO_PROCESSOR_H 3#define _ASM_POWERPC_VDSO_PROCESSOR_H 4 5#ifndef __ASSEMBLY__ 6 7/* Macros for adjusting thread priority (hardware multi-threading) */ 8#ifdef CONFIG_PPC64 9#define HMT_very_low() asm volatile("or 31, 31, 31 # very low priority") 10#define HMT_low() asm volatile("or 1, 1, 1 # low priority") 11#define HMT_medium_low() asm volatile("or 6, 6, 6 # medium low priority") 12#define HMT_medium() asm volatile("or 2, 2, 2 # medium priority") 13#define HMT_medium_high() asm volatile("or 5, 5, 5 # medium high priority") 14#define HMT_high() asm volatile("or 3, 3, 3 # high priority") 15#else 16#define HMT_very_low() 17#define HMT_low() 18#define HMT_medium_low() 19#define HMT_medium() 20#define HMT_medium_high() 21#define HMT_high() 22#endif 23 24#ifdef CONFIG_PPC64 25#define cpu_relax() \ 26 asm volatile(ASM_FTR_IFCLR( \ 27 /* Pre-POWER10 uses low ; medium priority nops */ \ 28 "or 1,1,1 ; or 2,2,2", \ 29 /* POWER10 onward uses pause_short (wait 2,0) */ \ 30 PPC_WAIT(2, 0), \ 31 %0) :: "i" (CPU_FTR_ARCH_31) : "memory") 32#else 33#define cpu_relax() barrier() 34#endif 35 36#endif /* __ASSEMBLY__ */ 37 38#endif /* _ASM_POWERPC_VDSO_PROCESSOR_H */ 39