1/* 2 * Copyright 2015, Michael Ellerman, IBM Corp. 3 * Licensed under GPLv2. 4 */ 5 6#ifndef _SELFTESTS_POWERPC_TM_TM_H 7#define _SELFTESTS_POWERPC_TM_TM_H 8 9#include <asm/tm.h> 10#include <asm/cputable.h> 11#include <stdbool.h> 12 13#include "../utils.h" 14 15static inline bool have_htm(void) 16{ 17#ifdef PPC_FEATURE2_HTM 18 return have_hwcap2(PPC_FEATURE2_HTM); 19#else 20 printf("PPC_FEATURE2_HTM not defined, can't check AT_HWCAP2\n"); 21 return false; 22#endif 23} 24 25static inline bool have_htm_nosc(void) 26{ 27#ifdef PPC_FEATURE2_HTM_NOSC 28 return have_hwcap2(PPC_FEATURE2_HTM_NOSC); 29#else 30 printf("PPC_FEATURE2_HTM_NOSC not defined, can't check AT_HWCAP2\n"); 31 return false; 32#endif 33} 34 35static inline long failure_code(void) 36{ 37 return __builtin_get_texasru() >> 24; 38} 39 40static inline bool failure_is_persistent(void) 41{ 42 return (failure_code() & TM_CAUSE_PERSISTENT) == TM_CAUSE_PERSISTENT; 43} 44 45static inline bool failure_is_syscall(void) 46{ 47 return (failure_code() & TM_CAUSE_SYSCALL) == TM_CAUSE_SYSCALL; 48} 49 50static inline bool failure_is_nesting(void) 51{ 52 return (__builtin_get_texasru() & 0x400000); 53} 54 55static inline int tcheck(void) 56{ 57 long cr; 58 asm volatile ("tcheck 0" : "=r"(cr) : : "cr0"); 59 return (cr >> 28) & 4; 60} 61 62static inline bool tcheck_doomed(void) 63{ 64 return tcheck() & 8; 65} 66 67static inline bool tcheck_active(void) 68{ 69 return tcheck() & 4; 70} 71 72static inline bool tcheck_suspended(void) 73{ 74 return tcheck() & 2; 75} 76 77static inline bool tcheck_transactional(void) 78{ 79 return tcheck() & 6; 80} 81 82#endif /* _SELFTESTS_POWERPC_TM_TM_H */ 83