Loading...
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 o->fn(o->ctx, o->buf, len);
43}
44
45static int show_channels(struct host1x_channel *ch, void *data, bool show_fifo)
46{
47 struct host1x *m = dev_get_drvdata(ch->dev->parent);
48 struct output *o = data;
49
50 mutex_lock(&ch->reflock);
51 if (ch->refcount) {
52 mutex_lock(&ch->cdma.lock);
53 if (show_fifo)
54 host1x_hw_show_channel_fifo(m, ch, o);
55 host1x_hw_show_channel_cdma(m, ch, o);
56 mutex_unlock(&ch->cdma.lock);
57 }
58 mutex_unlock(&ch->reflock);
59
60 return 0;
61}
62
63static void show_syncpts(struct host1x *m, struct output *o)
64{
65 int i;
66 host1x_debug_output(o, "---- syncpts ----\n");
67 for (i = 0; i < host1x_syncpt_nb_pts(m); i++) {
68 u32 max = host1x_syncpt_read_max(m->syncpt + i);
69 u32 min = host1x_syncpt_load(m->syncpt + i);
70 if (!min && !max)
71 continue;
72 host1x_debug_output(o, "id %d (%s) min %d max %d\n",
73 i, m->syncpt[i].name, min, max);
74 }
75
76 for (i = 0; i < host1x_syncpt_nb_bases(m); i++) {
77 u32 base_val;
78 base_val = host1x_syncpt_load_wait_base(m->syncpt + i);
79 if (base_val)
80 host1x_debug_output(o, "waitbase id %d val %d\n", i,
81 base_val);
82 }
83
84 host1x_debug_output(o, "\n");
85}
86
87static void show_all(struct host1x *m, struct output *o)
88{
89 struct host1x_channel *ch;
90
91 host1x_hw_show_mlocks(m, o);
92 show_syncpts(m, o);
93 host1x_debug_output(o, "---- channels ----\n");
94
95 host1x_for_each_channel(m, ch)
96 show_channels(ch, o, true);
97}
98
99static void show_all_no_fifo(struct host1x *host1x, struct output *o)
100{
101 struct host1x_channel *ch;
102
103 host1x_hw_show_mlocks(host1x, o);
104 show_syncpts(host1x, o);
105 host1x_debug_output(o, "---- channels ----\n");
106
107 host1x_for_each_channel(host1x, ch)
108 show_channels(ch, o, false);
109}
110
111static int host1x_debug_show_all(struct seq_file *s, void *unused)
112{
113 struct output o = {
114 .fn = write_to_seqfile,
115 .ctx = s
116 };
117 show_all(s->private, &o);
118 return 0;
119}
120
121static int host1x_debug_show(struct seq_file *s, void *unused)
122{
123 struct output o = {
124 .fn = write_to_seqfile,
125 .ctx = s
126 };
127 show_all_no_fifo(s->private, &o);
128 return 0;
129}
130
131static int host1x_debug_open_all(struct inode *inode, struct file *file)
132{
133 return single_open(file, host1x_debug_show_all, inode->i_private);
134}
135
136static const struct file_operations host1x_debug_all_fops = {
137 .open = host1x_debug_open_all,
138 .read = seq_read,
139 .llseek = seq_lseek,
140 .release = single_release,
141};
142
143static int host1x_debug_open(struct inode *inode, struct file *file)
144{
145 return single_open(file, host1x_debug_show, inode->i_private);
146}
147
148static const struct file_operations host1x_debug_fops = {
149 .open = host1x_debug_open,
150 .read = seq_read,
151 .llseek = seq_lseek,
152 .release = single_release,
153};
154
155static void host1x_debugfs_init(struct host1x *host1x)
156{
157 struct dentry *de = debugfs_create_dir("tegra-host1x", NULL);
158
159 if (!de)
160 return;
161
162 /* Store the created entry */
163 host1x->debugfs = de;
164
165 debugfs_create_file("status", S_IRUGO, de, host1x, &host1x_debug_fops);
166 debugfs_create_file("status_all", S_IRUGO, de, host1x,
167 &host1x_debug_all_fops);
168
169 debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
170 &host1x_debug_trace_cmdbuf);
171
172 host1x_hw_debug_init(host1x, de);
173
174 debugfs_create_u32("force_timeout_pid", S_IRUGO|S_IWUSR, de,
175 &host1x_debug_force_timeout_pid);
176 debugfs_create_u32("force_timeout_val", S_IRUGO|S_IWUSR, de,
177 &host1x_debug_force_timeout_val);
178 debugfs_create_u32("force_timeout_channel", S_IRUGO|S_IWUSR, de,
179 &host1x_debug_force_timeout_channel);
180}
181
182static void host1x_debugfs_exit(struct host1x *host1x)
183{
184 debugfs_remove_recursive(host1x->debugfs);
185}
186
187void host1x_debug_init(struct host1x *host1x)
188{
189 if (IS_ENABLED(CONFIG_DEBUG_FS))
190 host1x_debugfs_init(host1x);
191}
192
193void host1x_debug_deinit(struct host1x *host1x)
194{
195 if (IS_ENABLED(CONFIG_DEBUG_FS))
196 host1x_debugfs_exit(host1x);
197}
198
199void host1x_debug_dump(struct host1x *host1x)
200{
201 struct output o = {
202 .fn = write_to_printk
203 };
204 show_all(host1x, &o);
205}
206
207void host1x_debug_dump_syncpts(struct host1x *host1x)
208{
209 struct output o = {
210 .fn = write_to_printk
211 };
212 show_syncpts(host1x, &o);
213}
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}