2 * Copyright (C) 2010 Google, Inc.
3 * Author: Erik Gilling <konkers@android.com>
5 * Copyright (C) 2011-2013 NVIDIA Corporation
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.
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.
18 #include <linux/debugfs.h>
19 #include <linux/seq_file.h>
20 #include <linux/uaccess.h>
28 static DEFINE_MUTEX(debug_lock);
30 unsigned int host1x_debug_trace_cmdbuf;
32 static pid_t host1x_debug_force_timeout_pid;
33 static u32 host1x_debug_force_timeout_val;
34 static u32 host1x_debug_force_timeout_channel;
36 void host1x_debug_output(struct output *o, const char *fmt, ...)
42 len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
45 o->fn(o->ctx, o->buf, len);
48 static int show_channel(struct host1x_channel *ch, void *data, bool show_fifo)
50 struct host1x *m = dev_get_drvdata(ch->dev->parent);
51 struct output *o = data;
53 mutex_lock(&ch->cdma.lock);
54 mutex_lock(&debug_lock);
57 host1x_hw_show_channel_fifo(m, ch, o);
59 host1x_hw_show_channel_cdma(m, ch, o);
61 mutex_unlock(&debug_lock);
62 mutex_unlock(&ch->cdma.lock);
67 static void show_syncpts(struct host1x *m, struct output *o)
71 host1x_debug_output(o, "---- syncpts ----\n");
73 for (i = 0; i < host1x_syncpt_nb_pts(m); i++) {
74 u32 max = host1x_syncpt_read_max(m->syncpt + i);
75 u32 min = host1x_syncpt_load(m->syncpt + i);
80 host1x_debug_output(o, "id %u (%s) min %d max %d\n",
81 i, m->syncpt[i].name, min, max);
84 for (i = 0; i < host1x_syncpt_nb_bases(m); i++) {
87 base_val = host1x_syncpt_load_wait_base(m->syncpt + i);
89 host1x_debug_output(o, "waitbase id %u val %d\n", i,
93 host1x_debug_output(o, "\n");
96 static void show_all(struct host1x *m, struct output *o, bool show_fifo)
100 host1x_hw_show_mlocks(m, o);
102 host1x_debug_output(o, "---- channels ----\n");
104 for (i = 0; i < m->info->nb_channels; ++i) {
105 struct host1x_channel *ch = host1x_channel_get_index(m, i);
108 show_channel(ch, o, show_fifo);
109 host1x_channel_put(ch);
114 static int host1x_debug_show_all(struct seq_file *s, void *unused)
117 .fn = write_to_seqfile,
121 show_all(s->private, &o, true);
126 static int host1x_debug_show(struct seq_file *s, void *unused)
129 .fn = write_to_seqfile,
133 show_all(s->private, &o, false);
138 static int host1x_debug_open_all(struct inode *inode, struct file *file)
140 return single_open(file, host1x_debug_show_all, inode->i_private);
143 static const struct file_operations host1x_debug_all_fops = {
144 .open = host1x_debug_open_all,
147 .release = single_release,
150 static int host1x_debug_open(struct inode *inode, struct file *file)
152 return single_open(file, host1x_debug_show, inode->i_private);
155 static const struct file_operations host1x_debug_fops = {
156 .open = host1x_debug_open,
159 .release = single_release,
162 static void host1x_debugfs_init(struct host1x *host1x)
164 struct dentry *de = debugfs_create_dir("tegra-host1x", NULL);
169 /* Store the created entry */
170 host1x->debugfs = de;
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);
176 debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
177 &host1x_debug_trace_cmdbuf);
179 host1x_hw_debug_init(host1x, de);
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);
189 static void host1x_debugfs_exit(struct host1x *host1x)
191 debugfs_remove_recursive(host1x->debugfs);
194 void host1x_debug_init(struct host1x *host1x)
196 if (IS_ENABLED(CONFIG_DEBUG_FS))
197 host1x_debugfs_init(host1x);
200 void host1x_debug_deinit(struct host1x *host1x)
202 if (IS_ENABLED(CONFIG_DEBUG_FS))
203 host1x_debugfs_exit(host1x);
206 void host1x_debug_dump(struct host1x *host1x)
209 .fn = write_to_printk
212 show_all(host1x, &o, true);
215 void host1x_debug_dump_syncpts(struct host1x *host1x)
218 .fn = write_to_printk
221 show_syncpts(host1x, &o);