![Terje Bergstrom](/assets/img/avatar_default.png)
Add support for host1x debugging. Adds debugfs entries, and dumps channel state to UART in case of stuck job. Signed-off-by: Arto Merilainen <amerilainen@nvidia.com> Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Tested-by: Thierry Reding <thierry.reding@avionic-design.de> Tested-by: Erik Faye-Lund <kusmabite@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
211 lines
4.9 KiB
C
211 lines
4.9 KiB
C
/*
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* Copyright (C) 2010 Google, Inc.
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* Author: Erik Gilling <konkers@android.com>
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*
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* Copyright (C) 2011-2013 NVIDIA Corporation
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/uaccess.h>
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#include <linux/io.h>
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#include "dev.h"
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#include "debug.h"
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#include "channel.h"
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unsigned int host1x_debug_trace_cmdbuf;
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static pid_t host1x_debug_force_timeout_pid;
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static u32 host1x_debug_force_timeout_val;
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static u32 host1x_debug_force_timeout_channel;
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void host1x_debug_output(struct output *o, const char *fmt, ...)
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{
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va_list args;
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int len;
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va_start(args, fmt);
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len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
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va_end(args);
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o->fn(o->ctx, o->buf, len);
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}
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static int show_channels(struct host1x_channel *ch, void *data, bool show_fifo)
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{
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struct host1x *m = dev_get_drvdata(ch->dev->parent);
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struct output *o = data;
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mutex_lock(&ch->reflock);
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if (ch->refcount) {
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mutex_lock(&ch->cdma.lock);
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if (show_fifo)
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host1x_hw_show_channel_fifo(m, ch, o);
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host1x_hw_show_channel_cdma(m, ch, o);
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mutex_unlock(&ch->cdma.lock);
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}
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mutex_unlock(&ch->reflock);
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return 0;
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}
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static void show_syncpts(struct host1x *m, struct output *o)
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{
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int i;
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host1x_debug_output(o, "---- syncpts ----\n");
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for (i = 0; i < host1x_syncpt_nb_pts(m); i++) {
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u32 max = host1x_syncpt_read_max(m->syncpt + i);
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u32 min = host1x_syncpt_load(m->syncpt + i);
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if (!min && !max)
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continue;
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host1x_debug_output(o, "id %d (%s) min %d max %d\n",
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i, m->syncpt[i].name, min, max);
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}
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for (i = 0; i < host1x_syncpt_nb_bases(m); i++) {
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u32 base_val;
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base_val = host1x_syncpt_load_wait_base(m->syncpt + i);
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if (base_val)
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host1x_debug_output(o, "waitbase id %d val %d\n", i,
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base_val);
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}
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host1x_debug_output(o, "\n");
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}
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static void show_all(struct host1x *m, struct output *o)
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{
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struct host1x_channel *ch;
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host1x_hw_show_mlocks(m, o);
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show_syncpts(m, o);
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host1x_debug_output(o, "---- channels ----\n");
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host1x_for_each_channel(m, ch)
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show_channels(ch, o, true);
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}
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#ifdef CONFIG_DEBUG_FS
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static void show_all_no_fifo(struct host1x *host1x, struct output *o)
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{
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struct host1x_channel *ch;
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host1x_hw_show_mlocks(host1x, o);
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show_syncpts(host1x, o);
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host1x_debug_output(o, "---- channels ----\n");
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host1x_for_each_channel(host1x, ch)
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show_channels(ch, o, false);
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}
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static int host1x_debug_show_all(struct seq_file *s, void *unused)
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{
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struct output o = {
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.fn = write_to_seqfile,
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.ctx = s
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};
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show_all(s->private, &o);
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return 0;
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}
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static int host1x_debug_show(struct seq_file *s, void *unused)
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{
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struct output o = {
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.fn = write_to_seqfile,
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.ctx = s
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};
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show_all_no_fifo(s->private, &o);
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return 0;
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}
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static int host1x_debug_open_all(struct inode *inode, struct file *file)
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{
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return single_open(file, host1x_debug_show_all, inode->i_private);
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}
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static const struct file_operations host1x_debug_all_fops = {
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.open = host1x_debug_open_all,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static int host1x_debug_open(struct inode *inode, struct file *file)
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{
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return single_open(file, host1x_debug_show, inode->i_private);
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}
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static const struct file_operations host1x_debug_fops = {
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.open = host1x_debug_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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void host1x_debug_init(struct host1x *host1x)
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{
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struct dentry *de = debugfs_create_dir("tegra-host1x", NULL);
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if (!de)
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return;
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/* Store the created entry */
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host1x->debugfs = de;
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debugfs_create_file("status", S_IRUGO, de, host1x, &host1x_debug_fops);
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debugfs_create_file("status_all", S_IRUGO, de, host1x,
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&host1x_debug_all_fops);
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debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
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&host1x_debug_trace_cmdbuf);
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host1x_hw_debug_init(host1x, de);
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debugfs_create_u32("force_timeout_pid", S_IRUGO|S_IWUSR, de,
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&host1x_debug_force_timeout_pid);
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debugfs_create_u32("force_timeout_val", S_IRUGO|S_IWUSR, de,
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&host1x_debug_force_timeout_val);
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debugfs_create_u32("force_timeout_channel", S_IRUGO|S_IWUSR, de,
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&host1x_debug_force_timeout_channel);
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}
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void host1x_debug_deinit(struct host1x *host1x)
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{
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debugfs_remove_recursive(host1x->debugfs);
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}
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#else
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void host1x_debug_init(struct host1x *host1x)
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{
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}
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void host1x_debug_deinit(struct host1x *host1x)
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{
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}
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#endif
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void host1x_debug_dump(struct host1x *host1x)
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{
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struct output o = {
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.fn = write_to_printk
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};
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show_all(host1x, &o);
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}
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void host1x_debug_dump_syncpts(struct host1x *host1x)
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{
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struct output o = {
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.fn = write_to_printk
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};
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show_syncpts(host1x, &o);
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}
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