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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// 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
19unsigned int host1x_debug_trace_cmdbuf;
20
21static pid_t host1x_debug_force_timeout_pid;
22static u32 host1x_debug_force_timeout_val;
23static u32 host1x_debug_force_timeout_channel;
24
25void host1x_debug_output(struct output *o, const char *fmt, ...)
26{
27 va_list args;
28 int len;
29
30 va_start(args, fmt);
31 len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
32 va_end(args);
33
34 o->fn(o->ctx, o->buf, len, false);
35}
36
37void host1x_debug_cont(struct output *o, const char *fmt, ...)
38{
39 va_list args;
40 int len;
41
42 va_start(args, fmt);
43 len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
44 va_end(args);
45
46 o->fn(o->ctx, o->buf, len, true);
47}
48
49static int show_channel(struct host1x_channel *ch, void *data, bool show_fifo)
50{
51 struct host1x *m = dev_get_drvdata(ch->dev->parent);
52 struct output *o = data;
53
54 mutex_lock(&ch->cdma.lock);
55
56 if (show_fifo)
57 host1x_hw_show_channel_fifo(m, ch, o);
58
59 host1x_hw_show_channel_cdma(m, ch, o);
60
61 mutex_unlock(&ch->cdma.lock);
62
63 return 0;
64}
65
66static void show_syncpts(struct host1x *m, struct output *o)
67{
68 unsigned int i;
69
70 host1x_debug_output(o, "---- syncpts ----\n");
71
72 for (i = 0; i < host1x_syncpt_nb_pts(m); i++) {
73 u32 max = host1x_syncpt_read_max(m->syncpt + i);
74 u32 min = host1x_syncpt_load(m->syncpt + i);
75
76 if (!min && !max)
77 continue;
78
79 host1x_debug_output(o, "id %u (%s) min %d max %d\n",
80 i, m->syncpt[i].name, min, max);
81 }
82
83 for (i = 0; i < host1x_syncpt_nb_bases(m); i++) {
84 u32 base_val;
85
86 base_val = host1x_syncpt_load_wait_base(m->syncpt + i);
87 if (base_val)
88 host1x_debug_output(o, "waitbase id %u val %d\n", i,
89 base_val);
90 }
91
92 host1x_debug_output(o, "\n");
93}
94
95static void show_all(struct host1x *m, struct output *o, bool show_fifo)
96{
97 unsigned int i;
98
99 host1x_hw_show_mlocks(m, o);
100 show_syncpts(m, o);
101 host1x_debug_output(o, "---- channels ----\n");
102
103 for (i = 0; i < m->info->nb_channels; ++i) {
104 struct host1x_channel *ch = host1x_channel_get_index(m, i);
105
106 if (ch) {
107 show_channel(ch, o, show_fifo);
108 host1x_channel_put(ch);
109 }
110 }
111}
112
113static int host1x_debug_show_all(struct seq_file *s, void *unused)
114{
115 struct output o = {
116 .fn = write_to_seqfile,
117 .ctx = s
118 };
119
120 show_all(s->private, &o, true);
121
122 return 0;
123}
124
125static int host1x_debug_show(struct seq_file *s, void *unused)
126{
127 struct output o = {
128 .fn = write_to_seqfile,
129 .ctx = s
130 };
131
132 show_all(s->private, &o, false);
133
134 return 0;
135}
136
137static int host1x_debug_open_all(struct inode *inode, struct file *file)
138{
139 return single_open(file, host1x_debug_show_all, inode->i_private);
140}
141
142static const struct file_operations host1x_debug_all_fops = {
143 .open = host1x_debug_open_all,
144 .read = seq_read,
145 .llseek = seq_lseek,
146 .release = single_release,
147};
148
149static int host1x_debug_open(struct inode *inode, struct file *file)
150{
151 return single_open(file, host1x_debug_show, inode->i_private);
152}
153
154static const struct file_operations host1x_debug_fops = {
155 .open = host1x_debug_open,
156 .read = seq_read,
157 .llseek = seq_lseek,
158 .release = single_release,
159};
160
161static void host1x_debugfs_init(struct host1x *host1x)
162{
163 struct dentry *de = debugfs_create_dir("tegra-host1x", NULL);
164
165 /* Store the created entry */
166 host1x->debugfs = de;
167
168 debugfs_create_file("status", S_IRUGO, de, host1x, &host1x_debug_fops);
169 debugfs_create_file("status_all", S_IRUGO, de, host1x,
170 &host1x_debug_all_fops);
171
172 debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
173 &host1x_debug_trace_cmdbuf);
174
175 host1x_hw_debug_init(host1x, de);
176
177 debugfs_create_u32("force_timeout_pid", S_IRUGO|S_IWUSR, de,
178 &host1x_debug_force_timeout_pid);
179 debugfs_create_u32("force_timeout_val", S_IRUGO|S_IWUSR, de,
180 &host1x_debug_force_timeout_val);
181 debugfs_create_u32("force_timeout_channel", S_IRUGO|S_IWUSR, de,
182 &host1x_debug_force_timeout_channel);
183}
184
185static void host1x_debugfs_exit(struct host1x *host1x)
186{
187 debugfs_remove_recursive(host1x->debugfs);
188}
189
190void host1x_debug_init(struct host1x *host1x)
191{
192 if (IS_ENABLED(CONFIG_DEBUG_FS))
193 host1x_debugfs_init(host1x);
194}
195
196void host1x_debug_deinit(struct host1x *host1x)
197{
198 if (IS_ENABLED(CONFIG_DEBUG_FS))
199 host1x_debugfs_exit(host1x);
200}
201
202void host1x_debug_dump(struct host1x *host1x)
203{
204 struct output o = {
205 .fn = write_to_printk
206 };
207
208 show_all(host1x, &o, true);
209}
210
211void host1x_debug_dump_syncpts(struct host1x *host1x)
212{
213 struct output o = {
214 .fn = write_to_printk
215 };
216
217 show_syncpts(host1x, &o);
218}