| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 */ |