2 * Copyright (C) 2010 Google, Inc.
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 unsigned int host1x_debug_trace_cmdbuf;
30 static pid_t host1x_debug_force_timeout_pid;
31 static u32 host1x_debug_force_timeout_val;
32 static u32 host1x_debug_force_timeout_channel;
34 void host1x_debug_output(struct output *o, const char *fmt, ...)
40 len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
42 o->fn(o->ctx, o->buf, len);
45 static int show_channels(struct host1x_channel *ch, void *data, bool show_fifo)
47 struct host1x *m = dev_get_drvdata(ch->dev->parent);
48 struct output *o = data;
50 mutex_lock(&ch->reflock);
52 mutex_lock(&ch->cdma.lock);
54 host1x_hw_show_channel_fifo(m, ch, o);
55 host1x_hw_show_channel_cdma(m, ch, o);
56 mutex_unlock(&ch->cdma.lock);
58 mutex_unlock(&ch->reflock);
63 static void show_syncpts(struct host1x *m, struct output *o)
67 host1x_debug_output(o, "---- syncpts ----\n");
68 for (i = 0; i < host1x_syncpt_nb_pts(m); i++) {
69 u32 max = host1x_syncpt_read_max(m->syncpt + i);
70 u32 min = host1x_syncpt_load(m->syncpt + i);
75 host1x_debug_output(o, "id %u (%s) min %d max %d\n",
76 i, m->syncpt[i].name, min, max);
79 for (i = 0; i < host1x_syncpt_nb_bases(m); i++) {
82 base_val = host1x_syncpt_load_wait_base(m->syncpt + i);
84 host1x_debug_output(o, "waitbase id %u val %d\n", i,
88 host1x_debug_output(o, "\n");
91 static void show_all(struct host1x *m, struct output *o)
93 struct host1x_channel *ch;
95 host1x_hw_show_mlocks(m, o);
97 host1x_debug_output(o, "---- channels ----\n");
99 host1x_for_each_channel(m, ch)
100 show_channels(ch, o, true);
103 static void show_all_no_fifo(struct host1x *host1x, struct output *o)
105 struct host1x_channel *ch;
107 host1x_hw_show_mlocks(host1x, o);
108 show_syncpts(host1x, o);
109 host1x_debug_output(o, "---- channels ----\n");
111 host1x_for_each_channel(host1x, ch)
112 show_channels(ch, o, false);
115 static int host1x_debug_show_all(struct seq_file *s, void *unused)
118 .fn = write_to_seqfile,
121 show_all(s->private, &o);
125 static int host1x_debug_show(struct seq_file *s, void *unused)
128 .fn = write_to_seqfile,
131 show_all_no_fifo(s->private, &o);
135 static int host1x_debug_open_all(struct inode *inode, struct file *file)
137 return single_open(file, host1x_debug_show_all, inode->i_private);
140 static const struct file_operations host1x_debug_all_fops = {
141 .open = host1x_debug_open_all,
144 .release = single_release,
147 static int host1x_debug_open(struct inode *inode, struct file *file)
149 return single_open(file, host1x_debug_show, inode->i_private);
152 static const struct file_operations host1x_debug_fops = {
153 .open = host1x_debug_open,
156 .release = single_release,
159 static void host1x_debugfs_init(struct host1x *host1x)
161 struct dentry *de = debugfs_create_dir("tegra-host1x", NULL);
166 /* Store the created entry */
167 host1x->debugfs = de;
169 debugfs_create_file("status", S_IRUGO, de, host1x, &host1x_debug_fops);
170 debugfs_create_file("status_all", S_IRUGO, de, host1x,
171 &host1x_debug_all_fops);
173 debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
174 &host1x_debug_trace_cmdbuf);
176 host1x_hw_debug_init(host1x, de);
178 debugfs_create_u32("force_timeout_pid", S_IRUGO|S_IWUSR, de,
179 &host1x_debug_force_timeout_pid);
180 debugfs_create_u32("force_timeout_val", S_IRUGO|S_IWUSR, de,
181 &host1x_debug_force_timeout_val);
182 debugfs_create_u32("force_timeout_channel", S_IRUGO|S_IWUSR, de,
183 &host1x_debug_force_timeout_channel);
186 static void host1x_debugfs_exit(struct host1x *host1x)
188 debugfs_remove_recursive(host1x->debugfs);
191 void host1x_debug_init(struct host1x *host1x)
193 if (IS_ENABLED(CONFIG_DEBUG_FS))
194 host1x_debugfs_init(host1x);
197 void host1x_debug_deinit(struct host1x *host1x)
199 if (IS_ENABLED(CONFIG_DEBUG_FS))
200 host1x_debugfs_exit(host1x);
203 void host1x_debug_dump(struct host1x *host1x)
206 .fn = write_to_printk
208 show_all(host1x, &o);
211 void host1x_debug_dump_syncpts(struct host1x *host1x)
214 .fn = write_to_printk
216 show_syncpts(host1x, &o);