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 <asm/cputable.h>
16#include "reg.h"
17
18/* Avoid headaches with PRI?64 - just use %ll? always */
19typedef unsigned long long u64;
20typedef signed long long s64;
21
22/* Just for familiarity */
23typedef uint32_t u32;
24typedef uint16_t u16;
25typedef uint8_t u8;
26
27void test_harness_set_timeout(uint64_t time);
28int test_harness(int (test_function)(void), char *name);
29
30int read_auxv(char *buf, ssize_t buf_size);
31void *find_auxv_entry(int type, char *auxv);
32void *get_auxv_entry(int type);
33
34int pick_online_cpu(void);
35
36int parse_intmax(const char *buffer, size_t count, intmax_t *result, int base);
37int parse_uintmax(const char *buffer, size_t count, uintmax_t *result, int base);
38int parse_int(const char *buffer, size_t count, int *result, int base);
39int parse_uint(const char *buffer, size_t count, unsigned int *result, int base);
40int parse_long(const char *buffer, size_t count, long *result, int base);
41int parse_ulong(const char *buffer, size_t count, unsigned long *result, int base);
42
43int read_file(const char *path, char *buf, size_t count, size_t *len);
44int write_file(const char *path, const char *buf, size_t count);
45int read_file_alloc(const char *path, char **buf, size_t *len);
46int read_long(const char *path, long *result, int base);
47int write_long(const char *path, long result, int base);
48int read_ulong(const char *path, unsigned long *result, int base);
49int write_ulong(const char *path, unsigned long result, int base);
50int read_debugfs_file(const char *debugfs_file, char *buf, size_t count);
51int write_debugfs_file(const char *debugfs_file, const char *buf, size_t count);
52int read_debugfs_int(const char *debugfs_file, int *result);
53int write_debugfs_int(const char *debugfs_file, int result);
54int read_sysfs_file(char *debugfs_file, char *result, size_t result_size);
55int perf_event_open_counter(unsigned int type,
56 unsigned long config, int group_fd);
57int perf_event_enable(int fd);
58int perf_event_disable(int fd);
59int perf_event_reset(int fd);
60
61struct perf_event_read {
62 __u64 nr;
63 __u64 l1d_misses;
64};
65
66#if !defined(__GLIBC_PREREQ) || !__GLIBC_PREREQ(2, 30)
67#include <unistd.h>
68#include <sys/syscall.h>
69
70static inline pid_t gettid(void)
71{
72 return syscall(SYS_gettid);
73}
74#endif
75
76static inline bool have_hwcap(unsigned long ftr)
77{
78 return ((unsigned long)get_auxv_entry(AT_HWCAP) & ftr) == ftr;
79}
80
81#ifdef AT_HWCAP2
82static inline bool have_hwcap2(unsigned long ftr2)
83{
84 return ((unsigned long)get_auxv_entry(AT_HWCAP2) & ftr2) == ftr2;
85}
86#else
87static inline bool have_hwcap2(unsigned long ftr2)
88{
89 return false;
90}
91#endif
92
93static inline char *auxv_base_platform(void)
94{
95 return ((char *)get_auxv_entry(AT_BASE_PLATFORM));
96}
97
98static inline char *auxv_platform(void)
99{
100 return ((char *)get_auxv_entry(AT_PLATFORM));
101}
102
103bool is_ppc64le(void);
104int using_hash_mmu(bool *using_hash);
105
106/* Yes, this is evil */
107#define FAIL_IF(x) \
108do { \
109 if ((x)) { \
110 fprintf(stderr, \
111 "[FAIL] Test FAILED on line %d\n", __LINE__); \
112 return 1; \
113 } \
114} while (0)
115
116#define FAIL_IF_EXIT(x) \
117do { \
118 if ((x)) { \
119 fprintf(stderr, \
120 "[FAIL] Test FAILED on line %d\n", __LINE__); \
121 _exit(1); \
122 } \
123} while (0)
124
125/* The test harness uses this, yes it's gross */
126#define MAGIC_SKIP_RETURN_VALUE 99
127
128#define SKIP_IF(x) \
129do { \
130 if ((x)) { \
131 fprintf(stderr, \
132 "[SKIP] Test skipped on line %d\n", __LINE__); \
133 return MAGIC_SKIP_RETURN_VALUE; \
134 } \
135} while (0)
136
137#define SKIP_IF_MSG(x, msg) \
138do { \
139 if ((x)) { \
140 fprintf(stderr, \
141 "[SKIP] Test skipped on line %d: %s\n", \
142 __LINE__, msg); \
143 return MAGIC_SKIP_RETURN_VALUE; \
144 } \
145} while (0)
146
147#define _str(s) #s
148#define str(s) _str(s)
149
150#define sigsafe_err(msg) ({ \
151 ssize_t nbytes __attribute__((unused)); \
152 nbytes = write(STDERR_FILENO, msg, strlen(msg)); })
153
154/* POWER9 feature */
155#ifndef PPC_FEATURE2_ARCH_3_00
156#define PPC_FEATURE2_ARCH_3_00 0x00800000
157#endif
158
159/* POWER10 feature */
160#ifndef PPC_FEATURE2_ARCH_3_1
161#define PPC_FEATURE2_ARCH_3_1 0x00040000
162#endif
163
164/* POWER10 features */
165#ifndef PPC_FEATURE2_MMA
166#define PPC_FEATURE2_MMA 0x00020000
167#endif
168
169#if defined(__powerpc64__)
170#define UCONTEXT_NIA(UC) (UC)->uc_mcontext.gp_regs[PT_NIP]
171#define UCONTEXT_MSR(UC) (UC)->uc_mcontext.gp_regs[PT_MSR]
172#elif defined(__powerpc__)
173#define UCONTEXT_NIA(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_NIP]
174#define UCONTEXT_MSR(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_MSR]
175#else
176#error implement UCONTEXT_NIA
177#endif
178
179#endif /* _SELFTESTS_POWERPC_UTILS_H */