utils.h (3584B)
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 read_debugfs_file(char *debugfs_file, int *result); 37int write_debugfs_file(char *debugfs_file, int result); 38int read_sysfs_file(char *debugfs_file, char *result, size_t result_size); 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 45struct perf_event_read { 46 __u64 nr; 47 __u64 l1d_misses; 48}; 49 50#if !defined(__GLIBC_PREREQ) || !__GLIBC_PREREQ(2, 30) 51#include <unistd.h> 52#include <sys/syscall.h> 53 54static inline pid_t gettid(void) 55{ 56 return syscall(SYS_gettid); 57} 58#endif 59 60static inline bool have_hwcap(unsigned long ftr) 61{ 62 return ((unsigned long)get_auxv_entry(AT_HWCAP) & ftr) == ftr; 63} 64 65#ifdef AT_HWCAP2 66static inline bool have_hwcap2(unsigned long ftr2) 67{ 68 return ((unsigned long)get_auxv_entry(AT_HWCAP2) & ftr2) == ftr2; 69} 70#else 71static inline bool have_hwcap2(unsigned long ftr2) 72{ 73 return false; 74} 75#endif 76 77bool is_ppc64le(void); 78int using_hash_mmu(bool *using_hash); 79 80/* Yes, this is evil */ 81#define FAIL_IF(x) \ 82do { \ 83 if ((x)) { \ 84 fprintf(stderr, \ 85 "[FAIL] Test FAILED on line %d\n", __LINE__); \ 86 return 1; \ 87 } \ 88} while (0) 89 90#define FAIL_IF_EXIT(x) \ 91do { \ 92 if ((x)) { \ 93 fprintf(stderr, \ 94 "[FAIL] Test FAILED on line %d\n", __LINE__); \ 95 _exit(1); \ 96 } \ 97} while (0) 98 99/* The test harness uses this, yes it's gross */ 100#define MAGIC_SKIP_RETURN_VALUE 99 101 102#define SKIP_IF(x) \ 103do { \ 104 if ((x)) { \ 105 fprintf(stderr, \ 106 "[SKIP] Test skipped on line %d\n", __LINE__); \ 107 return MAGIC_SKIP_RETURN_VALUE; \ 108 } \ 109} while (0) 110 111#define SKIP_IF_MSG(x, msg) \ 112do { \ 113 if ((x)) { \ 114 fprintf(stderr, \ 115 "[SKIP] Test skipped on line %d: %s\n", \ 116 __LINE__, msg); \ 117 return MAGIC_SKIP_RETURN_VALUE; \ 118 } \ 119} while (0) 120 121#define _str(s) #s 122#define str(s) _str(s) 123 124#define sigsafe_err(msg) ({ \ 125 ssize_t nbytes __attribute__((unused)); \ 126 nbytes = write(STDERR_FILENO, msg, strlen(msg)); }) 127 128/* POWER9 feature */ 129#ifndef PPC_FEATURE2_ARCH_3_00 130#define PPC_FEATURE2_ARCH_3_00 0x00800000 131#endif 132 133/* POWER10 feature */ 134#ifndef PPC_FEATURE2_ARCH_3_1 135#define PPC_FEATURE2_ARCH_3_1 0x00040000 136#endif 137 138/* POWER10 features */ 139#ifndef PPC_FEATURE2_MMA 140#define PPC_FEATURE2_MMA 0x00020000 141#endif 142 143#if defined(__powerpc64__) 144#define UCONTEXT_NIA(UC) (UC)->uc_mcontext.gp_regs[PT_NIP] 145#define UCONTEXT_MSR(UC) (UC)->uc_mcontext.gp_regs[PT_MSR] 146#elif defined(__powerpc__) 147#define UCONTEXT_NIA(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_NIP] 148#define UCONTEXT_MSR(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_MSR] 149#else 150#error implement UCONTEXT_NIA 151#endif 152 153#endif /* _SELFTESTS_POWERPC_UTILS_H */