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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2010 Google, Inc.
4 * Author: Erik Gilling <konkers@android.com>
5 *
6 * Copyright (C) 2011-2013 NVIDIA Corporation
7 */
8
9#include <linux/debugfs.h>
10#include <linux/seq_file.h>
11#include <linux/uaccess.h>
12
13#include <linux/io.h>
14
15#include "dev.h"
16#include "debug.h"
17#include "channel.h"
18
19static DEFINE_MUTEX(debug_lock);
20
21unsigned int host1x_debug_trace_cmdbuf;
22
23static pid_t host1x_debug_force_timeout_pid;
24static u32 host1x_debug_force_timeout_val;
25static u32 host1x_debug_force_timeout_channel;
26
27void host1x_debug_output(struct output *o, const char *fmt, ...)
28{
29 va_list args;
30 int len;
31
32 va_start(args, fmt);
33 len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
34 va_end(args);
35
36 o->fn(o->ctx, o->buf, len, false);
37}
38
39void host1x_debug_cont(struct output *o, const char *fmt, ...)
40{
41 va_list args;
42 int len;
43
44 va_start(args, fmt);
45 len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
46 va_end(args);
47
48 o->fn(o->ctx, o->buf, len, true);
49}
50
51static int show_channel(struct host1x_channel *ch, void *data, bool show_fifo)
52{
53 struct host1x *m = dev_get_drvdata(ch->dev->parent);
54 struct output *o = data;
55
56 mutex_lock(&ch->cdma.lock);
57 mutex_lock(&debug_lock);
58
59 if (show_fifo)
60 host1x_hw_show_channel_fifo(m, ch, o);
61
62 host1x_hw_show_channel_cdma(m, ch, o);
63
64 mutex_unlock(&debug_lock);
65 mutex_unlock(&ch->cdma.lock);
66
67 return 0;
68}
69
70static void show_syncpts(struct host1x *m, struct output *o)
71{
72 unsigned int i;
73
74 host1x_debug_output(o, "---- syncpts ----\n");
75
76 for (i = 0; i < host1x_syncpt_nb_pts(m); i++) {
77 u32 max = host1x_syncpt_read_max(m->syncpt + i);
78 u32 min = host1x_syncpt_load(m->syncpt + i);
79
80 if (!min && !max)
81 continue;
82
83 host1x_debug_output(o, "id %u (%s) min %d max %d\n",
84 i, m->syncpt[i].name, min, max);
85 }
86
87 for (i = 0; i < host1x_syncpt_nb_bases(m); i++) {
88 u32 base_val;
89
90 base_val = host1x_syncpt_load_wait_base(m->syncpt + i);
91 if (base_val)
92 host1x_debug_output(o, "waitbase id %u val %d\n", i,
93 base_val);
94 }
95
96 host1x_debug_output(o, "\n");
97}
98
99static void show_all(struct host1x *m, struct output *o, bool show_fifo)
100{
101 unsigned int i;
102
103 host1x_hw_show_mlocks(m, o);
104 show_syncpts(m, o);
105 host1x_debug_output(o, "---- channels ----\n");
106
107 for (i = 0; i < m->info->nb_channels; ++i) {
108 struct host1x_channel *ch = host1x_channel_get_index(m, i);
109
110 if (ch) {
111 show_channel(ch, o, show_fifo);
112 host1x_channel_put(ch);
113 }
114 }
115}
116
117static int host1x_debug_show_all(struct seq_file *s, void *unused)
118{
119 struct output o = {
120 .fn = write_to_seqfile,
121 .ctx = s
122 };
123
124 show_all(s->private, &o, true);
125
126 return 0;
127}
128
129static int host1x_debug_show(struct seq_file *s, void *unused)
130{
131 struct output o = {
132 .fn = write_to_seqfile,
133 .ctx = s
134 };
135
136 show_all(s->private, &o, false);
137
138 return 0;
139}
140
141static int host1x_debug_open_all(struct inode *inode, struct file *file)
142{
143 return single_open(file, host1x_debug_show_all, inode->i_private);
144}
145
146static const struct file_operations host1x_debug_all_fops = {
147 .open = host1x_debug_open_all,
148 .read = seq_read,
149 .llseek = seq_lseek,
150 .release = single_release,
151};
152
153static int host1x_debug_open(struct inode *inode, struct file *file)
154{
155 return single_open(file, host1x_debug_show, inode->i_private);
156}
157
158static const struct file_operations host1x_debug_fops = {
159 .open = host1x_debug_open,
160 .read = seq_read,
161 .llseek = seq_lseek,
162 .release = single_release,
163};
164
165static void host1x_debugfs_init(struct host1x *host1x)
166{
167 struct dentry *de = debugfs_create_dir("tegra-host1x", NULL);
168
169 /* Store the created entry */
170 host1x->debugfs = de;
171
172 debugfs_create_file("status", S_IRUGO, de, host1x, &host1x_debug_fops);
173 debugfs_create_file("status_all", S_IRUGO, de, host1x,
174 &host1x_debug_all_fops);
175
176 debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
177 &host1x_debug_trace_cmdbuf);
178
179 host1x_hw_debug_init(host1x, de);
180
181 debugfs_create_u32("force_timeout_pid", S_IRUGO|S_IWUSR, de,
182 &host1x_debug_force_timeout_pid);
183 debugfs_create_u32("force_timeout_val", S_IRUGO|S_IWUSR, de,
184 &host1x_debug_force_timeout_val);
185 debugfs_create_u32("force_timeout_channel", S_IRUGO|S_IWUSR, de,
186 &host1x_debug_force_timeout_channel);
187}
188
189static void host1x_debugfs_exit(struct host1x *host1x)
190{
191 debugfs_remove_recursive(host1x->debugfs);
192}
193
194void host1x_debug_init(struct host1x *host1x)
195{
196 if (IS_ENABLED(CONFIG_DEBUG_FS))
197 host1x_debugfs_init(host1x);
198}
199
200void host1x_debug_deinit(struct host1x *host1x)
201{
202 if (IS_ENABLED(CONFIG_DEBUG_FS))
203 host1x_debugfs_exit(host1x);
204}
205
206void host1x_debug_dump(struct host1x *host1x)
207{
208 struct output o = {
209 .fn = write_to_printk
210 };
211
212 show_all(host1x, &o, true);
213}
214
215void host1x_debug_dump_syncpts(struct host1x *host1x)
216{
217 struct output o = {
218 .fn = write_to_printk
219 };
220
221 show_syncpts(host1x, &o);
222}
1/*
2 * Copyright (C) 2010 Google, Inc.
3 * Author: Erik Gilling <konkers@android.com>
4 *
5 * Copyright (C) 2011-2013 NVIDIA Corporation
6 *
7 * This software is licensed under the terms of the GNU General Public
8 * License version 2, as published by the Free Software Foundation, and
9 * may be copied, distributed, and modified under those terms.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 */
17
18#include <linux/debugfs.h>
19#include <linux/seq_file.h>
20#include <linux/uaccess.h>
21
22#include <linux/io.h>
23
24#include "dev.h"
25#include "debug.h"
26#include "channel.h"
27
28unsigned int host1x_debug_trace_cmdbuf;
29
30static pid_t host1x_debug_force_timeout_pid;
31static u32 host1x_debug_force_timeout_val;
32static u32 host1x_debug_force_timeout_channel;
33
34void host1x_debug_output(struct output *o, const char *fmt, ...)
35{
36 va_list args;
37 int len;
38
39 va_start(args, fmt);
40 len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
41 va_end(args);
42
43 o->fn(o->ctx, o->buf, len, false);
44}
45
46void host1x_debug_cont(struct output *o, const char *fmt, ...)
47{
48 va_list args;
49 int len;
50
51 va_start(args, fmt);
52 len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
53 va_end(args);
54
55 o->fn(o->ctx, o->buf, len, true);
56}
57
58static int show_channel(struct host1x_channel *ch, void *data, bool show_fifo)
59{
60 struct host1x *m = dev_get_drvdata(ch->dev->parent);
61 struct output *o = data;
62
63 mutex_lock(&ch->cdma.lock);
64
65 if (show_fifo)
66 host1x_hw_show_channel_fifo(m, ch, o);
67
68 host1x_hw_show_channel_cdma(m, ch, o);
69
70 mutex_unlock(&ch->cdma.lock);
71
72 return 0;
73}
74
75static void show_syncpts(struct host1x *m, struct output *o)
76{
77 unsigned int i;
78
79 host1x_debug_output(o, "---- syncpts ----\n");
80
81 for (i = 0; i < host1x_syncpt_nb_pts(m); i++) {
82 u32 max = host1x_syncpt_read_max(m->syncpt + i);
83 u32 min = host1x_syncpt_load(m->syncpt + i);
84
85 if (!min && !max)
86 continue;
87
88 host1x_debug_output(o, "id %u (%s) min %d max %d\n",
89 i, m->syncpt[i].name, min, max);
90 }
91
92 for (i = 0; i < host1x_syncpt_nb_bases(m); i++) {
93 u32 base_val;
94
95 base_val = host1x_syncpt_load_wait_base(m->syncpt + i);
96 if (base_val)
97 host1x_debug_output(o, "waitbase id %u val %d\n", i,
98 base_val);
99 }
100
101 host1x_debug_output(o, "\n");
102}
103
104static void show_all(struct host1x *m, struct output *o, bool show_fifo)
105{
106 int i;
107
108 host1x_hw_show_mlocks(m, o);
109 show_syncpts(m, o);
110 host1x_debug_output(o, "---- channels ----\n");
111
112 for (i = 0; i < m->info->nb_channels; ++i) {
113 struct host1x_channel *ch = host1x_channel_get_index(m, i);
114
115 if (ch) {
116 show_channel(ch, o, show_fifo);
117 host1x_channel_put(ch);
118 }
119 }
120}
121
122static int host1x_debug_show_all(struct seq_file *s, void *unused)
123{
124 struct output o = {
125 .fn = write_to_seqfile,
126 .ctx = s
127 };
128
129 show_all(s->private, &o, true);
130
131 return 0;
132}
133
134static int host1x_debug_show(struct seq_file *s, void *unused)
135{
136 struct output o = {
137 .fn = write_to_seqfile,
138 .ctx = s
139 };
140
141 show_all(s->private, &o, false);
142
143 return 0;
144}
145
146static int host1x_debug_open_all(struct inode *inode, struct file *file)
147{
148 return single_open(file, host1x_debug_show_all, inode->i_private);
149}
150
151static const struct file_operations host1x_debug_all_fops = {
152 .open = host1x_debug_open_all,
153 .read = seq_read,
154 .llseek = seq_lseek,
155 .release = single_release,
156};
157
158static int host1x_debug_open(struct inode *inode, struct file *file)
159{
160 return single_open(file, host1x_debug_show, inode->i_private);
161}
162
163static const struct file_operations host1x_debug_fops = {
164 .open = host1x_debug_open,
165 .read = seq_read,
166 .llseek = seq_lseek,
167 .release = single_release,
168};
169
170static void host1x_debugfs_init(struct host1x *host1x)
171{
172 struct dentry *de = debugfs_create_dir("tegra-host1x", NULL);
173
174 if (!de)
175 return;
176
177 /* Store the created entry */
178 host1x->debugfs = de;
179
180 debugfs_create_file("status", S_IRUGO, de, host1x, &host1x_debug_fops);
181 debugfs_create_file("status_all", S_IRUGO, de, host1x,
182 &host1x_debug_all_fops);
183
184 debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
185 &host1x_debug_trace_cmdbuf);
186
187 host1x_hw_debug_init(host1x, de);
188
189 debugfs_create_u32("force_timeout_pid", S_IRUGO|S_IWUSR, de,
190 &host1x_debug_force_timeout_pid);
191 debugfs_create_u32("force_timeout_val", S_IRUGO|S_IWUSR, de,
192 &host1x_debug_force_timeout_val);
193 debugfs_create_u32("force_timeout_channel", S_IRUGO|S_IWUSR, de,
194 &host1x_debug_force_timeout_channel);
195}
196
197static void host1x_debugfs_exit(struct host1x *host1x)
198{
199 debugfs_remove_recursive(host1x->debugfs);
200}
201
202void host1x_debug_init(struct host1x *host1x)
203{
204 if (IS_ENABLED(CONFIG_DEBUG_FS))
205 host1x_debugfs_init(host1x);
206}
207
208void host1x_debug_deinit(struct host1x *host1x)
209{
210 if (IS_ENABLED(CONFIG_DEBUG_FS))
211 host1x_debugfs_exit(host1x);
212}
213
214void host1x_debug_dump(struct host1x *host1x)
215{
216 struct output o = {
217 .fn = write_to_printk
218 };
219
220 show_all(host1x, &o, true);
221}
222
223void host1x_debug_dump_syncpts(struct host1x *host1x)
224{
225 struct output o = {
226 .fn = write_to_printk
227 };
228
229 show_syncpts(host1x, &o);
230}