| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Copyright 2015, Michael Ellerman, IBM Corp. |
| */ |
| |
| #ifndef _SELFTESTS_POWERPC_TM_TM_H |
| #define _SELFTESTS_POWERPC_TM_TM_H |
| |
| #include <stdbool.h> |
| #include <asm/tm.h> |
| |
| #include "utils.h" |
| |
| static inline bool have_htm(void) |
| { |
| #ifdef PPC_FEATURE2_HTM |
| return have_hwcap2(PPC_FEATURE2_HTM); |
| #else |
| printf("PPC_FEATURE2_HTM not defined, can't check AT_HWCAP2\n"); |
| return false; |
| #endif |
| } |
| |
| static inline bool have_htm_nosc(void) |
| { |
| #ifdef PPC_FEATURE2_HTM_NOSC |
| return have_hwcap2(PPC_FEATURE2_HTM_NOSC); |
| #else |
| printf("PPC_FEATURE2_HTM_NOSC not defined, can't check AT_HWCAP2\n"); |
| return false; |
| #endif |
| } |
| |
| static inline long failure_code(void) |
| { |
| return __builtin_get_texasru() >> 24; |
| } |
| |
| static inline bool failure_is_persistent(void) |
| { |
| return (failure_code() & TM_CAUSE_PERSISTENT) == TM_CAUSE_PERSISTENT; |
| } |
| |
| static inline bool failure_is_syscall(void) |
| { |
| return (failure_code() & TM_CAUSE_SYSCALL) == TM_CAUSE_SYSCALL; |
| } |
| |
| static inline bool failure_is_unavailable(void) |
| { |
| return (failure_code() & TM_CAUSE_FAC_UNAV) == TM_CAUSE_FAC_UNAV; |
| } |
| |
| static inline bool failure_is_reschedule(void) |
| { |
| if ((failure_code() & TM_CAUSE_RESCHED) == TM_CAUSE_RESCHED || |
| (failure_code() & TM_CAUSE_KVM_RESCHED) == TM_CAUSE_KVM_RESCHED || |
| (failure_code() & TM_CAUSE_KVM_FAC_UNAV) == TM_CAUSE_KVM_FAC_UNAV) |
| return true; |
| |
| return false; |
| } |
| |
| static inline bool failure_is_nesting(void) |
| { |
| return (__builtin_get_texasru() & 0x400000); |
| } |
| |
| static inline int tcheck(void) |
| { |
| long cr; |
| asm volatile ("tcheck 0" : "=r"(cr) : : "cr0"); |
| return (cr >> 28) & 4; |
| } |
| |
| static inline bool tcheck_doomed(void) |
| { |
| return tcheck() & 8; |
| } |
| |
| static inline bool tcheck_active(void) |
| { |
| return tcheck() & 4; |
| } |
| |
| static inline bool tcheck_suspended(void) |
| { |
| return tcheck() & 2; |
| } |
| |
| static inline bool tcheck_transactional(void) |
| { |
| return tcheck() & 6; |
| } |
| |
| #endif /* _SELFTESTS_POWERPC_TM_TM_H */ |