Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright 2013, Michael Ellerman, IBM Corp.
4 */
5
6#ifndef _SELFTESTS_POWERPC_UTILS_H
7#define _SELFTESTS_POWERPC_UTILS_H
8
9#define __cacheline_aligned __attribute__((aligned(128)))
10
11#include <stdint.h>
12#include <stdbool.h>
13#include <linux/auxvec.h>
14#include <linux/perf_event.h>
15#include "reg.h"
16
17/* Avoid headaches with PRI?64 - just use %ll? always */
18typedef unsigned long long u64;
19typedef signed long long s64;
20
21/* Just for familiarity */
22typedef uint32_t u32;
23typedef uint16_t u16;
24typedef uint8_t u8;
25
26void test_harness_set_timeout(uint64_t time);
27int test_harness(int (test_function)(void), char *name);
28
29int read_auxv(char *buf, ssize_t buf_size);
30void *find_auxv_entry(int type, char *auxv);
31void *get_auxv_entry(int type);
32
33int pick_online_cpu(void);
34
35int read_debugfs_file(char *debugfs_file, int *result);
36int write_debugfs_file(char *debugfs_file, int result);
37int read_sysfs_file(char *debugfs_file, char *result, size_t result_size);
38void set_dscr(unsigned long val);
39int perf_event_open_counter(unsigned int type,
40 unsigned long config, int group_fd);
41int perf_event_enable(int fd);
42int perf_event_disable(int fd);
43int perf_event_reset(int fd);
44
45#if !defined(__GLIBC_PREREQ) || !__GLIBC_PREREQ(2, 30)
46#include <unistd.h>
47#include <sys/syscall.h>
48
49static inline pid_t gettid(void)
50{
51 return syscall(SYS_gettid);
52}
53#endif
54
55static inline bool have_hwcap(unsigned long ftr)
56{
57 return ((unsigned long)get_auxv_entry(AT_HWCAP) & ftr) == ftr;
58}
59
60#ifdef AT_HWCAP2
61static inline bool have_hwcap2(unsigned long ftr2)
62{
63 return ((unsigned long)get_auxv_entry(AT_HWCAP2) & ftr2) == ftr2;
64}
65#else
66static inline bool have_hwcap2(unsigned long ftr2)
67{
68 return false;
69}
70#endif
71
72bool is_ppc64le(void);
73int using_hash_mmu(bool *using_hash);
74
75/* Yes, this is evil */
76#define FAIL_IF(x) \
77do { \
78 if ((x)) { \
79 fprintf(stderr, \
80 "[FAIL] Test FAILED on line %d\n", __LINE__); \
81 return 1; \
82 } \
83} while (0)
84
85#define FAIL_IF_EXIT(x) \
86do { \
87 if ((x)) { \
88 fprintf(stderr, \
89 "[FAIL] Test FAILED on line %d\n", __LINE__); \
90 _exit(1); \
91 } \
92} while (0)
93
94/* The test harness uses this, yes it's gross */
95#define MAGIC_SKIP_RETURN_VALUE 99
96
97#define SKIP_IF(x) \
98do { \
99 if ((x)) { \
100 fprintf(stderr, \
101 "[SKIP] Test skipped on line %d\n", __LINE__); \
102 return MAGIC_SKIP_RETURN_VALUE; \
103 } \
104} while (0)
105
106#define SKIP_IF_MSG(x, msg) \
107do { \
108 if ((x)) { \
109 fprintf(stderr, \
110 "[SKIP] Test skipped on line %d: %s\n", \
111 __LINE__, msg); \
112 return MAGIC_SKIP_RETURN_VALUE; \
113 } \
114} while (0)
115
116#define _str(s) #s
117#define str(s) _str(s)
118
119#define sigsafe_err(msg) ({ \
120 ssize_t nbytes __attribute__((unused)); \
121 nbytes = write(STDERR_FILENO, msg, strlen(msg)); })
122
123/* POWER9 feature */
124#ifndef PPC_FEATURE2_ARCH_3_00
125#define PPC_FEATURE2_ARCH_3_00 0x00800000
126#endif
127
128/* POWER10 feature */
129#ifndef PPC_FEATURE2_ARCH_3_1
130#define PPC_FEATURE2_ARCH_3_1 0x00040000
131#endif
132
133#if defined(__powerpc64__)
134#define UCONTEXT_NIA(UC) (UC)->uc_mcontext.gp_regs[PT_NIP]
135#define UCONTEXT_MSR(UC) (UC)->uc_mcontext.gp_regs[PT_MSR]
136#elif defined(__powerpc__)
137#define UCONTEXT_NIA(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_NIP]
138#define UCONTEXT_MSR(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_MSR]
139#else
140#error implement UCONTEXT_NIA
141#endif
142
143#endif /* _SELFTESTS_POWERPC_UTILS_H */