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
have_hwcap(unsigned long ftr)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
have_hwcap2(unsigned long ftr2)51 static inline bool have_hwcap2(unsigned long ftr2)
52 {
53 return ((unsigned long)get_auxv_entry(AT_HWCAP2) & ftr2) == ftr2;
54 }
55 #else
have_hwcap2(unsigned long ftr2)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