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

   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
  15 static 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
  25 static 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
  35 static inline long failure_code(void)
  36 {
  37         return __builtin_get_texasru() >> 24;
  38 }
  39
  40 static inline bool failure_is_persistent(void)
  41 {
  42         return (failure_code() & TM_CAUSE_PERSISTENT) == TM_CAUSE_PERSISTENT;
  43 }
  44
  45 static inline bool failure_is_syscall(void)
  46 {
  47         return (failure_code() & TM_CAUSE_SYSCALL) == TM_CAUSE_SYSCALL;
  48 }
  49
  50 static inline bool failure_is_unavailable(void)
  51 {
  52         return (failure_code() & TM_CAUSE_FAC_UNAV) == TM_CAUSE_FAC_UNAV;
  53 }
  54
  55 static inline bool failure_is_reschedule(void)
  56 {
  57         if ((failure_code() & TM_CAUSE_RESCHED) == TM_CAUSE_RESCHED ||
  58             (failure_code() & TM_CAUSE_KVM_RESCHED) == TM_CAUSE_KVM_RESCHED)
  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 */