1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright 2014, Michael Ellerman, IBM Corp.
4 */
5
6 #ifndef _SELFTESTS_POWERPC_PMU_EBB_TRACE_H
7 #define _SELFTESTS_POWERPC_PMU_EBB_TRACE_H
8
9 #include "utils.h"
10
11 #define TRACE_TYPE_REG 1
12 #define TRACE_TYPE_COUNTER 2
13 #define TRACE_TYPE_STRING 3
14 #define TRACE_TYPE_INDENT 4
15 #define TRACE_TYPE_OUTDENT 5
16
17 struct trace_entry
18 {
19 u8 type;
20 u8 length;
21 u8 data[];
22 };
23
24 struct trace_buffer
25 {
26 u64 size;
27 bool overflow;
28 void *tail;
29 u8 data[];
30 };
31
32 struct trace_buffer *trace_buffer_allocate(u64 size);
33 int trace_log_reg(struct trace_buffer *tb, u64 reg, u64 value);
34 int trace_log_counter(struct trace_buffer *tb, u64 value);
35 int trace_log_string(struct trace_buffer *tb, char *str);
36 int trace_log_indent(struct trace_buffer *tb);
37 int trace_log_outdent(struct trace_buffer *tb);
38 void trace_buffer_print(struct trace_buffer *tb);
39 void trace_print_location(struct trace_buffer *tb);
40
41 #endif /* _SELFTESTS_POWERPC_PMU_EBB_TRACE_H */
42
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