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