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 __ASSEMBLER__ 6 7 #include <asm/cputable.h> 8 #include <asm/feature-fixups.h> 9 10 /* Macros for adjusting thread priority (hardware multi-threading) */ 11 #ifdef CONFIG_PPC64 12 #define HMT_very_low() asm volatile("or 31, 31, 31 # very low priority") 13 #define HMT_low() asm volatile("or 1, 1, 1 # low priority") 14 #define HMT_medium_low() asm volatile("or 6, 6, 6 # medium low priority") 15 #define HMT_medium() asm volatile("or 2, 2, 2 # medium priority") 16 #define HMT_medium_high() asm volatile("or 5, 5, 5 # medium high priority") 17 #define HMT_high() asm volatile("or 3, 3, 3 # high priority") 18 #else 19 #define HMT_very_low() 20 #define HMT_low() 21 #define HMT_medium_low() 22 #define HMT_medium() 23 #define HMT_medium_high() 24 #define HMT_high() 25 #endif 26 27 #ifdef CONFIG_PPC64 28 #define cpu_relax() \ 29 asm volatile(ASM_FTR_IFCLR( \ 30 /* Pre-POWER10 uses low ; medium priority nops */ \ 31 "or 1,1,1 ; or 2,2,2", \ 32 /* POWER10 onward uses pause_short (wait 2,0) */ \ 33 PPC_WAIT(2, 0), \ 34 %0) :: "i" (CPU_FTR_ARCH_31) : "memory") 35 #else 36 #define cpu_relax() barrier() 37 #endif 38 39 #endif /* __ASSEMBLER__ */ 40 41 #endif /* _ASM_POWERPC_VDSO_PROCESSOR_H */ 42