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
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
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
34static inline long failure_code(void)
35{
36	return __builtin_get_texasru() >> 24;
37}
38
39static inline bool failure_is_persistent(void)
40{
41	return (failure_code() & TM_CAUSE_PERSISTENT) == TM_CAUSE_PERSISTENT;
42}
43
44static inline bool failure_is_syscall(void)
45{
46	return (failure_code() & TM_CAUSE_SYSCALL) == TM_CAUSE_SYSCALL;
47}
48
49static inline bool failure_is_unavailable(void)
50{
51	return (failure_code() & TM_CAUSE_FAC_UNAV) == TM_CAUSE_FAC_UNAV;
52}
53
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
64static inline bool failure_is_nesting(void)
65{
66	return (__builtin_get_texasru() & 0x400000);
67}
68
69static inline int tcheck(void)
70{
71	long cr;
72	asm volatile ("tcheck 0" : "=r"(cr) : : "cr0");
73	return (cr >> 28) & 4;
74}
75
76static inline bool tcheck_doomed(void)
77{
78	return tcheck() & 8;
79}
80
81static inline bool tcheck_active(void)
82{
83	return tcheck() & 4;
84}
85
86static inline bool tcheck_suspended(void)
87{
88	return tcheck() & 2;
89}
90
91static inline bool tcheck_transactional(void)
92{
93	return tcheck() & 6;
94}
95
96#endif /* _SELFTESTS_POWERPC_TM_TM_H */
97