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 void set_dscr(unsigned long val); 38 int perf_event_open_counter(unsigned int type, 39 unsigned long config, int group_fd); 40 int perf_event_enable(int fd); 41 int perf_event_disable(int fd); 42 int perf_event_reset(int fd); 43 44 static inline bool have_hwcap(unsigned long ftr) 45 { 46 return ((unsigned long)get_auxv_entry(AT_HWCAP) & ftr) == ftr; 47 } 48 49 #ifdef AT_HWCAP2 50 static inline bool have_hwcap2(unsigned long ftr2) 51 { 52 return ((unsigned long)get_auxv_entry(AT_HWCAP2) & ftr2) == ftr2; 53 } 54 #else 55 static inline bool have_hwcap2(unsigned long ftr2) 56 { 57 return false; 58 } 59 #endif 60 61 bool is_ppc64le(void); 62 63 /* Yes, this is evil */ 64 #define FAIL_IF(x) \ 65 do { \ 66 if ((x)) { \ 67 fprintf(stderr, \ 68 "[FAIL] Test FAILED on line %d\n", __LINE__); \ 69 return 1; \ 70 } \ 71 } while (0) 72 73 /* The test harness uses this, yes it's gross */ 74 #define MAGIC_SKIP_RETURN_VALUE 99 75 76 #define SKIP_IF(x) \ 77 do { \ 78 if ((x)) { \ 79 fprintf(stderr, \ 80 "[SKIP] Test skipped on line %d\n", __LINE__); \ 81 return MAGIC_SKIP_RETURN_VALUE; \ 82 } \ 83 } while (0) 84 85 #define SKIP_IF_MSG(x, msg) \ 86 do { \ 87 if ((x)) { \ 88 fprintf(stderr, \ 89 "[SKIP] Test skipped on line %d: %s\n", \ 90 __LINE__, msg); \ 91 return MAGIC_SKIP_RETURN_VALUE; \ 92 } \ 93 } while (0) 94 95 #define _str(s) #s 96 #define str(s) _str(s) 97 98 /* POWER9 feature */ 99 #ifndef PPC_FEATURE2_ARCH_3_00 100 #define PPC_FEATURE2_ARCH_3_00 0x00800000 101 #endif 102 103 #if defined(__powerpc64__) 104 #define UCONTEXT_NIA(UC) (UC)->uc_mcontext.gp_regs[PT_NIP] 105 #define UCONTEXT_MSR(UC) (UC)->uc_mcontext.gp_regs[PT_MSR] 106 #elif defined(__powerpc__) 107 #define UCONTEXT_NIA(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_NIP] 108 #define UCONTEXT_MSR(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_MSR] 109 #else 110 #error implement UCONTEXT_NIA 111 #endif 112 113 #endif /* _SELFTESTS_POWERPC_UTILS_H */ 114