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 <stdio.h> 13 #include <stdbool.h> 14 #include <sys/signal.h> 15 #include <linux/auxvec.h> 16 #include <linux/perf_event.h> 17 #include <asm/cputable.h> 18 #include "reg.h" 19 #include <unistd.h> 20 21 #ifndef ARRAY_SIZE 22 # define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 23 #endif 24 25 /* Avoid headaches with PRI?64 - just use %ll? always */ 26 typedef unsigned long long u64; 27 typedef signed long long s64; 28 29 /* Just for familiarity */ 30 typedef uint32_t u32; 31 typedef uint16_t u16; 32 typedef uint8_t u8; 33 34 void test_harness_set_timeout(uint64_t time); 35 int test_harness(int (test_function)(void), const char *name); 36 37 int read_auxv(char *buf, ssize_t buf_size); 38 void *find_auxv_entry(int type, char *auxv); 39 void *get_auxv_entry(int type); 40 41 #define BIND_CPU_ANY (-1) 42 43 int pick_online_cpu(void); 44 int bind_to_cpu(int cpu); 45 46 int parse_intmax(const char *buffer, size_t count, intmax_t *result, int base); 47 int parse_uintmax(const char *buffer, size_t count, uintmax_t *result, int base); 48 int parse_int(const char *buffer, size_t count, int *result, int base); 49 int parse_uint(const char *buffer, size_t count, unsigned int *result, int base); 50 int parse_long(const char *buffer, size_t count, long *result, int base); 51 int parse_ulong(const char *buffer, size_t count, unsigned long *result, int base); 52 53 int read_file(const char *path, char *buf, size_t count, size_t *len); 54 int write_file(const char *path, const char *buf, size_t count); 55 int read_file_alloc(const char *path, char **buf, size_t *len); 56 int read_long(const char *path, long *result, int base); 57 int write_long(const char *path, long result, int base); 58 int read_ulong(const char *path, unsigned long *result, int base); 59 int write_ulong(const char *path, unsigned long result, int base); 60 int read_debugfs_file(const char *debugfs_file, char *buf, size_t count); 61 int write_debugfs_file(const char *debugfs_file, const char *buf, size_t count); 62 int read_debugfs_int(const char *debugfs_file, int *result); 63 int write_debugfs_int(const char *debugfs_file, int result); 64 int read_sysfs_file(char *debugfs_file, char *result, size_t result_size); 65 int perf_event_open_counter(unsigned int type, 66 unsigned long config, int group_fd); 67 int perf_event_enable(int fd); 68 int perf_event_disable(int fd); 69 int perf_event_reset(int fd); 70 71 struct perf_event_read { 72 __u64 nr; 73 __u64 l1d_misses; 74 }; 75 76 #if !defined(__GLIBC_PREREQ) || !__GLIBC_PREREQ(2, 30) 77 #include <sys/syscall.h> 78 79 static inline pid_t gettid(void) 80 { 81 return syscall(SYS_gettid); 82 } 83 #endif 84 85 static inline bool have_hwcap(unsigned long ftr) 86 { 87 return ((unsigned long)get_auxv_entry(AT_HWCAP) & ftr) == ftr; 88 } 89 90 #ifdef AT_HWCAP2 91 static inline bool have_hwcap2(unsigned long ftr2) 92 { 93 return ((unsigned long)get_auxv_entry(AT_HWCAP2) & ftr2) == ftr2; 94 } 95 #else 96 static inline bool have_hwcap2(unsigned long ftr2) 97 { 98 return false; 99 } 100 #endif 101 102 static inline char *auxv_base_platform(void) 103 { 104 return ((char *)get_auxv_entry(AT_BASE_PLATFORM)); 105 } 106 107 static inline char *auxv_platform(void) 108 { 109 return ((char *)get_auxv_entry(AT_PLATFORM)); 110 } 111 112 bool is_ppc64le(void); 113 int using_hash_mmu(bool *using_hash); 114 115 struct sigaction push_signal_handler(int sig, void (*fn)(int, siginfo_t *, void *)); 116 struct sigaction pop_signal_handler(int sig, struct sigaction old_handler); 117 118 /* Yes, this is evil */ 119 #define FAIL_IF(x) \ 120 do { \ 121 if ((x)) { \ 122 fprintf(stderr, \ 123 "[FAIL] Test FAILED on line %d\n", __LINE__); \ 124 return 1; \ 125 } \ 126 } while (0) 127 128 #define FAIL_IF_MSG(x, msg) \ 129 do { \ 130 if ((x)) { \ 131 fprintf(stderr, \ 132 "[FAIL] Test FAILED on line %d: %s\n", \ 133 __LINE__, msg); \ 134 return 1; \ 135 } \ 136 } while (0) 137 138 #define FAIL_IF_EXIT(x) \ 139 do { \ 140 if ((x)) { \ 141 fprintf(stderr, \ 142 "[FAIL] Test FAILED on line %d\n", __LINE__); \ 143 _exit(1); \ 144 } \ 145 } while (0) 146 147 #define FAIL_IF_EXIT_MSG(x, msg) \ 148 do { \ 149 if ((x)) { \ 150 fprintf(stderr, \ 151 "[FAIL] Test FAILED on line %d: %s\n", \ 152 __LINE__, msg); \ 153 _exit(1); \ 154 } \ 155 } while (0) 156 157 /* The test harness uses this, yes it's gross */ 158 #define MAGIC_SKIP_RETURN_VALUE 99 159 160 #define SKIP_IF(x) \ 161 do { \ 162 if ((x)) { \ 163 fprintf(stderr, \ 164 "[SKIP] Test skipped on line %d\n", __LINE__); \ 165 return MAGIC_SKIP_RETURN_VALUE; \ 166 } \ 167 } while (0) 168 169 #define SKIP_IF_MSG(x, msg) \ 170 do { \ 171 if ((x)) { \ 172 fprintf(stderr, \ 173 "[SKIP] Test skipped on line %d: %s\n", \ 174 __LINE__, msg); \ 175 return MAGIC_SKIP_RETURN_VALUE; \ 176 } \ 177 } while (0) 178 179 #define _str(s) #s 180 #define str(s) _str(s) 181 182 #define sigsafe_err(msg) ({ \ 183 ssize_t nbytes __attribute__((unused)); \ 184 nbytes = write(STDERR_FILENO, msg, strlen(msg)); }) 185 186 /* POWER9 feature */ 187 #ifndef PPC_FEATURE2_ARCH_3_00 188 #define PPC_FEATURE2_ARCH_3_00 0x00800000 189 #endif 190 191 /* POWER10 feature */ 192 #ifndef PPC_FEATURE2_ARCH_3_1 193 #define PPC_FEATURE2_ARCH_3_1 0x00040000 194 #endif 195 196 /* POWER10 features */ 197 #ifndef PPC_FEATURE2_MMA 198 #define PPC_FEATURE2_MMA 0x00020000 199 #endif 200 201 #if defined(__powerpc64__) 202 #define UCONTEXT_NIA(UC) (UC)->uc_mcontext.gp_regs[PT_NIP] 203 #define UCONTEXT_MSR(UC) (UC)->uc_mcontext.gp_regs[PT_MSR] 204 #elif defined(__powerpc__) 205 #define UCONTEXT_NIA(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_NIP] 206 #define UCONTEXT_MSR(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_MSR] 207 #else 208 #error implement UCONTEXT_NIA 209 #endif 210 211 #endif /* _SELFTESTS_POWERPC_UTILS_H */ 212