1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright 2015, Michael Ellerman, IBM Corp. 4 */ 5 6 #ifndef _SELFTESTS_POWERPC_TM_TM_H 7 #define _SELFTESTS_POWERPC_TM_TM_H 8 9 #include <stdbool.h> 10 #include <asm/tm.h> 11 12 #include "utils.h" 13 have_htm(void)14static inline bool have_htm(void) 15 { 16 #ifdef PPC_FEATURE2_HTM 17 return have_hwcap2(PPC_FEATURE2_HTM); 18 #else 19 printf("PPC_FEATURE2_HTM not defined, can't check AT_HWCAP2\n"); 20 return false; 21 #endif 22 } 23 have_htm_nosc(void)24static inline bool have_htm_nosc(void) 25 { 26 #ifdef PPC_FEATURE2_HTM_NOSC 27 return have_hwcap2(PPC_FEATURE2_HTM_NOSC); 28 #else 29 printf("PPC_FEATURE2_HTM_NOSC not defined, can't check AT_HWCAP2\n"); 30 return false; 31 #endif 32 } 33 failure_code(void)34static inline long failure_code(void) 35 { 36 return __builtin_get_texasru() >> 24; 37 } 38 failure_is_persistent(void)39static inline bool failure_is_persistent(void) 40 { 41 return (failure_code() & TM_CAUSE_PERSISTENT) == TM_CAUSE_PERSISTENT; 42 } 43 failure_is_syscall(void)44static inline bool failure_is_syscall(void) 45 { 46 return (failure_code() & TM_CAUSE_SYSCALL) == TM_CAUSE_SYSCALL; 47 } 48 failure_is_unavailable(void)49static inline bool failure_is_unavailable(void) 50 { 51 return (failure_code() & TM_CAUSE_FAC_UNAV) == TM_CAUSE_FAC_UNAV; 52 } 53 failure_is_reschedule(void)54static inline bool failure_is_reschedule(void) 55 { 56 if ((failure_code() & TM_CAUSE_RESCHED) == TM_CAUSE_RESCHED || 57 (failure_code() & TM_CAUSE_KVM_RESCHED) == TM_CAUSE_KVM_RESCHED || 58 (failure_code() & TM_CAUSE_KVM_FAC_UNAV) == TM_CAUSE_KVM_FAC_UNAV) 59 return true; 60 61 return false; 62 } 63 failure_is_nesting(void)64static inline bool failure_is_nesting(void) 65 { 66 return (__builtin_get_texasru() & 0x400000); 67 } 68 tcheck(void)69static inline int tcheck(void) 70 { 71 long cr; 72 asm volatile ("tcheck 0" : "=r"(cr) : : "cr0"); 73 return (cr >> 28) & 4; 74 } 75 tcheck_doomed(void)76static inline bool tcheck_doomed(void) 77 { 78 return tcheck() & 8; 79 } 80 tcheck_active(void)81static inline bool tcheck_active(void) 82 { 83 return tcheck() & 4; 84 } 85 tcheck_suspended(void)86static inline bool tcheck_suspended(void) 87 { 88 return tcheck() & 2; 89 } 90 tcheck_transactional(void)91static inline bool tcheck_transactional(void) 92 { 93 return tcheck() & 6; 94 } 95 96 #endif /* _SELFTESTS_POWERPC_TM_TM_H */ 97