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 "reg.h" 16 17 /* Avoid headaches with PRI?64 - just use %ll? always */ 18 typedef unsigned long long u64; 19 typedef signed long long s64; 20 21 /* Just for familiarity */ 22 typedef uint32_t u32; 23 typedef uint16_t u16; 24 typedef uint8_t u8; 25 26 void test_harness_set_timeout(uint64_t time); 27 int test_harness(int (test_function)(void), char *name); 28 29 int read_auxv(char *buf, ssize_t buf_size); 30 void *find_auxv_entry(int type, char *auxv); 31 void *get_auxv_entry(int type); 32 33 int pick_online_cpu(void); 34 35 int read_debugfs_file(char *debugfs_file, int *result); 36 int write_debugfs_file(char *debugfs_file, int result); 37 int read_sysfs_file(char *debugfs_file, char *result, size_t result_size); 38 void set_dscr(unsigned long val); 39 int perf_event_open_counter(unsigned int type, 40 unsigned long config, int group_fd); 41 int perf_event_enable(int fd); 42 int perf_event_disable(int fd); 43 int perf_event_reset(int fd); 44 45 static inline bool have_hwcap(unsigned long ftr) 46 { 47 return ((unsigned long)get_auxv_entry(AT_HWCAP) & ftr) == ftr; 48 } 49 50 #ifdef AT_HWCAP2 51 static inline bool have_hwcap2(unsigned long ftr2) 52 { 53 return ((unsigned long)get_auxv_entry(AT_HWCAP2) & ftr2) == ftr2; 54 } 55 #else 56 static inline bool have_hwcap2(unsigned long ftr2) 57 { 58 return false; 59 } 60 #endif 61 62 bool is_ppc64le(void); 63 64 /* Yes, this is evil */ 65 #define FAIL_IF(x) \ 66 do { \ 67 if ((x)) { \ 68 fprintf(stderr, \ 69 "[FAIL] Test FAILED on line %d\n", __LINE__); \ 70 return 1; \ 71 } \ 72 } while (0) 73 74 /* The test harness uses this, yes it's gross */ 75 #define MAGIC_SKIP_RETURN_VALUE 99 76 77 #define SKIP_IF(x) \ 78 do { \ 79 if ((x)) { \ 80 fprintf(stderr, \ 81 "[SKIP] Test skipped on line %d\n", __LINE__); \ 82 return MAGIC_SKIP_RETURN_VALUE; \ 83 } \ 84 } while (0) 85 86 #define SKIP_IF_MSG(x, msg) \ 87 do { \ 88 if ((x)) { \ 89 fprintf(stderr, \ 90 "[SKIP] Test skipped on line %d: %s\n", \ 91 __LINE__, msg); \ 92 return MAGIC_SKIP_RETURN_VALUE; \ 93 } \ 94 } while (0) 95 96 #define _str(s) #s 97 #define str(s) _str(s) 98 99 /* POWER9 feature */ 100 #ifndef PPC_FEATURE2_ARCH_3_00 101 #define PPC_FEATURE2_ARCH_3_00 0x00800000 102 #endif 103 104 #if defined(__powerpc64__) 105 #define UCONTEXT_NIA(UC) (UC)->uc_mcontext.gp_regs[PT_NIP] 106 #define UCONTEXT_MSR(UC) (UC)->uc_mcontext.gp_regs[PT_MSR] 107 #elif defined(__powerpc__) 108 #define UCONTEXT_NIA(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_NIP] 109 #define UCONTEXT_MSR(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_MSR] 110 #else 111 #error implement UCONTEXT_NIA 112 #endif 113 114 #endif /* _SELFTESTS_POWERPC_UTILS_H */ 115