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