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