Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2010 Google, Inc.
 * Author: Erik Gilling <konkers@android.com>
 *
 * Copyright (C) 2011-2013 NVIDIA Corporation
 */
 
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
 
#include <linux/io.h>
 
#include "dev.h"
#include "debug.h"
#include "channel.h"
 
static DEFINE_MUTEX(debug_lock);
 
unsigned int host1x_debug_trace_cmdbuf;
 
static pid_t host1x_debug_force_timeout_pid;
static u32 host1x_debug_force_timeout_val;
static u32 host1x_debug_force_timeout_channel;
 
void host1x_debug_output(struct output *o, const char *fmt, ...)
{
<------>va_list args;
<------>int len;
 
<------>va_start(args, fmt);
<------>len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
<------>va_end(args);
 
<------>o->fn(o->ctx, o->buf, len, false);
}
 
void host1x_debug_cont(struct output *o, const char *fmt, ...)
{
<------>va_list args;
<------>int len;
 
<------>va_start(args, fmt);
<------>len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
<------>va_end(args);
 
<------>o->fn(o->ctx, o->buf, len, true);
}
 
static int show_channel(struct host1x_channel *ch, void *data, bool show_fifo)
{
<------>struct host1x *m = dev_get_drvdata(ch->dev->parent);
<------>struct output *o = data;
 
<------>mutex_lock(&ch->cdma.lock);
<------>mutex_lock(&debug_lock);
 
<------>if (show_fifo)
<------><------>host1x_hw_show_channel_fifo(m, ch, o);
 
<------>host1x_hw_show_channel_cdma(m, ch, o);
 
<------>mutex_unlock(&debug_lock);
<------>mutex_unlock(&ch->cdma.lock);
 
<------>return 0;
}
 
static void show_syncpts(struct host1x *m, struct output *o)
{
<------>unsigned int i;
 
<------>host1x_debug_output(o, "---- syncpts ----\n");
 
<------>for (i = 0; i < host1x_syncpt_nb_pts(m); i++) {
<------><------>u32 max = host1x_syncpt_read_max(m->syncpt + i);
<------><------>u32 min = host1x_syncpt_load(m->syncpt + i);
 
<------><------>if (!min && !max)
<------><------><------>continue;
 
<------><------>host1x_debug_output(o, "id %u (%s) min %d max %d\n",
<------><------><------><------>    i, m->syncpt[i].name, min, max);
<------>}
 
<------>for (i = 0; i < host1x_syncpt_nb_bases(m); i++) {
<------><------>u32 base_val;
 
<------><------>base_val = host1x_syncpt_load_wait_base(m->syncpt + i);
<------><------>if (base_val)
<------><------><------>host1x_debug_output(o, "waitbase id %u val %d\n", i,
<------><------><------><------><------>    base_val);
<------>}
 
<------>host1x_debug_output(o, "\n");
}
 
static void show_all(struct host1x *m, struct output *o, bool show_fifo)
{
<------>unsigned int i;
 
<------>host1x_hw_show_mlocks(m, o);
<------>show_syncpts(m, o);
<------>host1x_debug_output(o, "---- channels ----\n");
 
<------>for (i = 0; i < m->info->nb_channels; ++i) {
<------><------>struct host1x_channel *ch = host1x_channel_get_index(m, i);
 
<------><------>if (ch) {
<------><------><------>show_channel(ch, o, show_fifo);
<------><------><------>host1x_channel_put(ch);
<------><------>}
<------>}
}
 
static int host1x_debug_show_all(struct seq_file *s, void *unused)
{
<------>struct output o = {
<------><------>.fn = write_to_seqfile,
<------><------>.ctx = s
<------>};
 
<------>show_all(s->private, &o, true);
 
<------>return 0;
}
 
static int host1x_debug_show(struct seq_file *s, void *unused)
{
<------>struct output o = {
<------><------>.fn = write_to_seqfile,
<------><------>.ctx = s
<------>};
 
<------>show_all(s->private, &o, false);
 
<------>return 0;
}
 
static int host1x_debug_open_all(struct inode *inode, struct file *file)
{
<------>return single_open(file, host1x_debug_show_all, inode->i_private);
}
 
static const struct file_operations host1x_debug_all_fops = {
<------>.open = host1x_debug_open_all,
<------>.read = seq_read,
<------>.llseek = seq_lseek,
<------>.release = single_release,
};
 
static int host1x_debug_open(struct inode *inode, struct file *file)
{
<------>return single_open(file, host1x_debug_show, inode->i_private);
}
 
static const struct file_operations host1x_debug_fops = {
<------>.open = host1x_debug_open,
<------>.read = seq_read,
<------>.llseek = seq_lseek,
<------>.release = single_release,
};
 
static void host1x_debugfs_init(struct host1x *host1x)
{
<------>struct dentry *de = debugfs_create_dir("tegra-host1x", NULL);
 
<------>/* Store the created entry */
<------>host1x->debugfs = de;
 
<------>debugfs_create_file("status", S_IRUGO, de, host1x, &host1x_debug_fops);
<------>debugfs_create_file("status_all", S_IRUGO, de, host1x,
<------><------><------>    &host1x_debug_all_fops);
 
<------>debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
<------><------><------>   &host1x_debug_trace_cmdbuf);
 
<------>host1x_hw_debug_init(host1x, de);
 
<------>debugfs_create_u32("force_timeout_pid", S_IRUGO|S_IWUSR, de,
<------><------><------>   &host1x_debug_force_timeout_pid);
<------>debugfs_create_u32("force_timeout_val", S_IRUGO|S_IWUSR, de,
<------><------><------>   &host1x_debug_force_timeout_val);
<------>debugfs_create_u32("force_timeout_channel", S_IRUGO|S_IWUSR, de,
<------><------><------>   &host1x_debug_force_timeout_channel);
}
 
static void host1x_debugfs_exit(struct host1x *host1x)
{
<------>debugfs_remove_recursive(host1x->debugfs);
}
 
void host1x_debug_init(struct host1x *host1x)
{
<------>if (IS_ENABLED(CONFIG_DEBUG_FS))
<------><------>host1x_debugfs_init(host1x);
}
 
void host1x_debug_deinit(struct host1x *host1x)
{
<------>if (IS_ENABLED(CONFIG_DEBUG_FS))
<------><------>host1x_debugfs_exit(host1x);
}
 
void host1x_debug_dump(struct host1x *host1x)
{
<------>struct output o = {
<------><------>.fn = write_to_printk
<------>};
 
<------>show_all(host1x, &o, true);
}
 
void host1x_debug_dump_syncpts(struct host1x *host1x)
{
<------>struct output o = {
<------><------>.fn = write_to_printk
<------>};
 
<------>show_syncpts(host1x, &o);
}