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);
43 o->fn(o->ctx, o->buf, len);
46 static int show_channel(struct host1x_channel *ch, void *data, bool show_fifo)
48 struct host1x *m = dev_get_drvdata(ch->dev->parent);
49 struct output *o = data;
51 mutex_lock(&ch->cdma.lock);
54 host1x_hw_show_channel_fifo(m, ch, o);
56 host1x_hw_show_channel_cdma(m, ch, o);
58 mutex_unlock(&ch->cdma.lock);
63 static void show_syncpts(struct host1x *m, struct output *o)
67 host1x_debug_output(o, "---- syncpts ----\n");
69 for (i = 0; i < host1x_syncpt_nb_pts(m); i++) {
70 u32 max = host1x_syncpt_read_max(m->syncpt + i);
71 u32 min = host1x_syncpt_load(m->syncpt + i);
76 host1x_debug_output(o, "id %u (%s) min %d max %d\n",
77 i, m->syncpt[i].name, min, max);
80 for (i = 0; i < host1x_syncpt_nb_bases(m); i++) {
83 base_val = host1x_syncpt_load_wait_base(m->syncpt + i);
85 host1x_debug_output(o, "waitbase id %u val %d\n", i,
89 host1x_debug_output(o, "\n");
92 static void show_all(struct host1x *m, struct output *o, bool show_fifo)
96 host1x_hw_show_mlocks(m, o);
98 host1x_debug_output(o, "---- channels ----\n");
100 for (i = 0; i < m->info->nb_channels; ++i) {
101 struct host1x_channel *ch = host1x_channel_get_index(m, i);
104 show_channel(ch, o, show_fifo);
105 host1x_channel_put(ch);
110 static int host1x_debug_show_all(struct seq_file *s, void *unused)
113 .fn = write_to_seqfile,
117 show_all(s->private, &o, true);
122 static int host1x_debug_show(struct seq_file *s, void *unused)
125 .fn = write_to_seqfile,
129 show_all(s->private, &o, false);
134 static int host1x_debug_open_all(struct inode *inode, struct file *file)
136 return single_open(file, host1x_debug_show_all, inode->i_private);
139 static const struct file_operations host1x_debug_all_fops = {
140 .open = host1x_debug_open_all,
143 .release = single_release,
146 static int host1x_debug_open(struct inode *inode, struct file *file)
148 return single_open(file, host1x_debug_show, inode->i_private);
151 static const struct file_operations host1x_debug_fops = {
152 .open = host1x_debug_open,
155 .release = single_release,
158 static void host1x_debugfs_init(struct host1x *host1x)
160 struct dentry *de = debugfs_create_dir("tegra-host1x", NULL);
165 /* Store the created entry */
166 host1x->debugfs = de;
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);
172 debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
173 &host1x_debug_trace_cmdbuf);
175 host1x_hw_debug_init(host1x, de);
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);
185 static void host1x_debugfs_exit(struct host1x *host1x)
187 debugfs_remove_recursive(host1x->debugfs);
190 void host1x_debug_init(struct host1x *host1x)
192 if (IS_ENABLED(CONFIG_DEBUG_FS))
193 host1x_debugfs_init(host1x);
196 void host1x_debug_deinit(struct host1x *host1x)
198 if (IS_ENABLED(CONFIG_DEBUG_FS))
199 host1x_debugfs_exit(host1x);
202 void host1x_debug_dump(struct host1x *host1x)
205 .fn = write_to_printk
208 show_all(host1x, &o, true);
211 void host1x_debug_dump_syncpts(struct host1x *host1x)
214 .fn = write_to_printk
217 show_syncpts(host1x, &o);