tools/testing/selftests/powerpc/tm/tm.h

   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
  14 static 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
  24 static 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
  34 static inline long failure_code(void)
  35 {
  36         return __builtin_get_texasru() >> 24;
  37 }
  38
  39 static inline bool failure_is_persistent(void)
  40 {
  41         return (failure_code() & TM_CAUSE_PERSISTENT) == TM_CAUSE_PERSISTENT;
  42 }
  43
  44 static inline bool failure_is_syscall(void)
  45 {
  46         return (failure_code() & TM_CAUSE_SYSCALL) == TM_CAUSE_SYSCALL;
  47 }
  48
  49 static inline bool failure_is_unavailable(void)
  50 {
  51         return (failure_code() & TM_CAUSE_FAC_UNAV) == TM_CAUSE_FAC_UNAV;
  52 }
  53
  54 static 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
  64 static inline bool failure_is_nesting(void)
  65 {
  66         return (__builtin_get_texasru() & 0x400000);
  67 }
  68
  69 static inline int tcheck(void)
  70 {
  71         long cr;
  72         asm volatile ("tcheck 0" : "=r"(cr) : : "cr0");
  73         return (cr >> 28) & 4;
  74 }
  75
  76 static inline bool tcheck_doomed(void)
  77 {
  78         return tcheck() & 8;
  79 }
  80
  81 static inline bool tcheck_active(void)
  82 {
  83         return tcheck() & 4;
  84 }
  85
  86 static inline bool tcheck_suspended(void)
  87 {
  88         return tcheck() & 2;
  89 }
  90
  91 static inline bool tcheck_transactional(void)
  92 {
  93         return tcheck() & 6;
  94 }
  95
  96 #endif /* _SELFTESTS_POWERPC_TM_TM_H */