1/*
2 * Copyright 2022 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: AMD
23 *
24 */
25#include "link_dp_trace.h"
26#include "link/protocols/link_dpcd.h"
27#include "link.h"
28
29void dp_trace_init(struct dc_link *link)
30{
31 memset(&link->dp_trace, 0, sizeof(link->dp_trace));
32 link->dp_trace.is_initialized = true;
33}
34
35void dp_trace_reset(struct dc_link *link)
36{
37 memset(&link->dp_trace, 0, sizeof(link->dp_trace));
38}
39
40bool dp_trace_is_initialized(struct dc_link *link)
41{
42 return link->dp_trace.is_initialized;
43}
44
45void dp_trace_detect_lt_init(struct dc_link *link)
46{
47 memset(&link->dp_trace.detect_lt_trace, 0, sizeof(link->dp_trace.detect_lt_trace));
48}
49
50void dp_trace_commit_lt_init(struct dc_link *link)
51{
52 memset(&link->dp_trace.commit_lt_trace, 0, sizeof(link->dp_trace.commit_lt_trace));
53}
54
55void dp_trace_link_loss_increment(struct dc_link *link)
56{
57 link->dp_trace.link_loss_count++;
58}
59
60void dp_trace_lt_fail_count_update(struct dc_link *link,
61 unsigned int fail_count,
62 bool in_detection)
63{
64 if (in_detection)
65 link->dp_trace.detect_lt_trace.counts.fail = fail_count;
66 else
67 link->dp_trace.commit_lt_trace.counts.fail = fail_count;
68}
69
70void dp_trace_lt_total_count_increment(struct dc_link *link,
71 bool in_detection)
72{
73 if (in_detection)
74 link->dp_trace.detect_lt_trace.counts.total++;
75 else
76 link->dp_trace.commit_lt_trace.counts.total++;
77}
78
79void dp_trace_set_is_logged_flag(struct dc_link *link,
80 bool in_detection,
81 bool is_logged)
82{
83 if (in_detection)
84 link->dp_trace.detect_lt_trace.is_logged = is_logged;
85 else
86 link->dp_trace.commit_lt_trace.is_logged = is_logged;
87}
88
89bool dp_trace_is_logged(struct dc_link *link, bool in_detection)
90{
91 if (in_detection)
92 return link->dp_trace.detect_lt_trace.is_logged;
93 else
94 return link->dp_trace.commit_lt_trace.is_logged;
95}
96
97void dp_trace_lt_result_update(struct dc_link *link,
98 enum link_training_result result,
99 bool in_detection)
100{
101 if (in_detection)
102 link->dp_trace.detect_lt_trace.result = result;
103 else
104 link->dp_trace.commit_lt_trace.result = result;
105}
106
107void dp_trace_set_lt_start_timestamp(struct dc_link *link,
108 bool in_detection)
109{
110 if (in_detection)
111 link->dp_trace.detect_lt_trace.timestamps.start = dm_get_timestamp(ctx: link->dc->ctx);
112 else
113 link->dp_trace.commit_lt_trace.timestamps.start = dm_get_timestamp(ctx: link->dc->ctx);
114}
115
116void dp_trace_set_lt_end_timestamp(struct dc_link *link,
117 bool in_detection)
118{
119 if (in_detection)
120 link->dp_trace.detect_lt_trace.timestamps.end = dm_get_timestamp(ctx: link->dc->ctx);
121 else
122 link->dp_trace.commit_lt_trace.timestamps.end = dm_get_timestamp(ctx: link->dc->ctx);
123}
124
125unsigned long long dp_trace_get_lt_end_timestamp(struct dc_link *link,
126 bool in_detection)
127{
128 if (in_detection)
129 return link->dp_trace.detect_lt_trace.timestamps.end;
130 else
131 return link->dp_trace.commit_lt_trace.timestamps.end;
132}
133
134const struct dp_trace_lt_counts *dp_trace_get_lt_counts(struct dc_link *link,
135 bool in_detection)
136{
137 if (in_detection)
138 return &link->dp_trace.detect_lt_trace.counts;
139 else
140 return &link->dp_trace.commit_lt_trace.counts;
141}
142
143unsigned int dp_trace_get_link_loss_count(struct dc_link *link)
144{
145 return link->dp_trace.link_loss_count;
146}
147
148void dp_trace_set_edp_power_timestamp(struct dc_link *link,
149 bool power_up)
150{
151 if (!power_up)
152 /*save driver power off time stamp*/
153 link->dp_trace.edp_trace_power_timestamps.poweroff = dm_get_timestamp(ctx: link->dc->ctx);
154 else
155 link->dp_trace.edp_trace_power_timestamps.poweron = dm_get_timestamp(ctx: link->dc->ctx);
156}
157
158uint64_t dp_trace_get_edp_poweron_timestamp(struct dc_link *link)
159{
160 return link->dp_trace.edp_trace_power_timestamps.poweron;
161}
162
163uint64_t dp_trace_get_edp_poweroff_timestamp(struct dc_link *link)
164{
165 return link->dp_trace.edp_trace_power_timestamps.poweroff;
166}
167
168void dp_trace_source_sequence(struct dc_link *link, uint8_t dp_test_mode)
169{
170 if (link != NULL && link->dc->debug.enable_driver_sequence_debug)
171 core_link_write_dpcd(link, DP_SOURCE_SEQUENCE,
172 data: &dp_test_mode, size: sizeof(dp_test_mode));
173}
174

source code of linux/drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_trace.c