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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2013, Michael Ellerman, IBM Corp.
*/
#ifndef _SELFTESTS_POWERPC_UTILS_H
#define _SELFTESTS_POWERPC_UTILS_H
#define __cacheline_aligned __attribute__((aligned(128)))
#include <stdint.h>
#include <stdbool.h>
#include <linux/auxvec.h>
#include <linux/perf_event.h>
#include <asm/cputable.h>
#include "reg.h"
/* Avoid headaches with PRI?64 - just use %ll? always */
typedef unsigned long long u64;
typedef signed long long s64;
/* Just for familiarity */
typedef uint32_t u32;
typedef uint16_t u16;
typedef uint8_t u8;
void test_harness_set_timeout(uint64_t time);
int test_harness(int (test_function)(void), char *name);
int read_auxv(char *buf, ssize_t buf_size);
void *find_auxv_entry(int type, char *auxv);
void *get_auxv_entry(int type);
#define BIND_CPU_ANY (-1)
int pick_online_cpu(void);
int bind_to_cpu(int cpu);
int parse_intmax(const char *buffer, size_t count, intmax_t *result, int base);
int parse_uintmax(const char *buffer, size_t count, uintmax_t *result, int base);
int parse_int(const char *buffer, size_t count, int *result, int base);
int parse_uint(const char *buffer, size_t count, unsigned int *result, int base);
int parse_long(const char *buffer, size_t count, long *result, int base);
int parse_ulong(const char *buffer, size_t count, unsigned long *result, int base);
int read_file(const char *path, char *buf, size_t count, size_t *len);
int write_file(const char *path, const char *buf, size_t count);
int read_file_alloc(const char *path, char **buf, size_t *len);
int read_long(const char *path, long *result, int base);
int write_long(const char *path, long result, int base);
int read_ulong(const char *path, unsigned long *result, int base);
int write_ulong(const char *path, unsigned long result, int base);
int read_debugfs_file(const char *debugfs_file, char *buf, size_t count);
int write_debugfs_file(const char *debugfs_file, const char *buf, size_t count);
int read_debugfs_int(const char *debugfs_file, int *result);
int write_debugfs_int(const char *debugfs_file, int result);
int read_sysfs_file(char *debugfs_file, char *result, size_t result_size);
int perf_event_open_counter(unsigned int type,
unsigned long config, int group_fd);
int perf_event_enable(int fd);
int perf_event_disable(int fd);
int perf_event_reset(int fd);
struct perf_event_read {
__u64 nr;
__u64 l1d_misses;
};
#if !defined(__GLIBC_PREREQ) || !__GLIBC_PREREQ(2, 30)
#include <unistd.h>
#include <sys/syscall.h>
static inline pid_t gettid(void)
{
return syscall(SYS_gettid);
}
#endif
static inline bool have_hwcap(unsigned long ftr)
{
return ((unsigned long)get_auxv_entry(AT_HWCAP) & ftr) == ftr;
}
#ifdef AT_HWCAP2
static inline bool have_hwcap2(unsigned long ftr2)
{
return ((unsigned long)get_auxv_entry(AT_HWCAP2) & ftr2) == ftr2;
}
#else
static inline bool have_hwcap2(unsigned long ftr2)
{
return false;
}
#endif
static inline char *auxv_base_platform(void)
{
return ((char *)get_auxv_entry(AT_BASE_PLATFORM));
}
static inline char *auxv_platform(void)
{
return ((char *)get_auxv_entry(AT_PLATFORM));
}
bool is_ppc64le(void);
int using_hash_mmu(bool *using_hash);
/* Yes, this is evil */
#define FAIL_IF(x) \
do { \
if ((x)) { \
fprintf(stderr, \
"[FAIL] Test FAILED on line %d\n", __LINE__); \
return 1; \
} \
} while (0)
#define FAIL_IF_EXIT(x) \
do { \
if ((x)) { \
fprintf(stderr, \
"[FAIL] Test FAILED on line %d\n", __LINE__); \
_exit(1); \
} \
} while (0)
/* The test harness uses this, yes it's gross */
#define MAGIC_SKIP_RETURN_VALUE 99
#define SKIP_IF(x) \
do { \
if ((x)) { \
fprintf(stderr, \
"[SKIP] Test skipped on line %d\n", __LINE__); \
return MAGIC_SKIP_RETURN_VALUE; \
} \
} while (0)
#define SKIP_IF_MSG(x, msg) \
do { \
if ((x)) { \
fprintf(stderr, \
"[SKIP] Test skipped on line %d: %s\n", \
__LINE__, msg); \
return MAGIC_SKIP_RETURN_VALUE; \
} \
} while (0)
#define _str(s) #s
#define str(s) _str(s)
#define sigsafe_err(msg) ({ \
ssize_t nbytes __attribute__((unused)); \
nbytes = write(STDERR_FILENO, msg, strlen(msg)); })
/* POWER9 feature */
#ifndef PPC_FEATURE2_ARCH_3_00
#define PPC_FEATURE2_ARCH_3_00 0x00800000
#endif
/* POWER10 feature */
#ifndef PPC_FEATURE2_ARCH_3_1
#define PPC_FEATURE2_ARCH_3_1 0x00040000
#endif
/* POWER10 features */
#ifndef PPC_FEATURE2_MMA
#define PPC_FEATURE2_MMA 0x00020000
#endif
#if defined(__powerpc64__)
#define UCONTEXT_NIA(UC) (UC)->uc_mcontext.gp_regs[PT_NIP]
#define UCONTEXT_MSR(UC) (UC)->uc_mcontext.gp_regs[PT_MSR]
#elif defined(__powerpc__)
#define UCONTEXT_NIA(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_NIP]
#define UCONTEXT_MSR(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_MSR]
#else
#error implement UCONTEXT_NIA
#endif
#endif /* _SELFTESTS_POWERPC_UTILS_H */
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