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/*
* drivers/video/tegra/host/debug.c
*
* Copyright (C) 2010 Google, Inc.
* Author: Erik Gilling <konkers@android.com>
*
* Copyright (C) 2011-2014, NVIDIA Corporation. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/gk20a.h>
#include <linux/io.h>
#include "dev.h"
#include "debug.h"
#include "nvhost_acm.h"
#include "nvhost_channel.h"
#include "chip_support.h"
pid_t nvhost_debug_null_kickoff_pid;
unsigned int nvhost_debug_trace_cmdbuf;
pid_t nvhost_debug_force_timeout_pid;
u32 nvhost_debug_force_timeout_val;
u32 nvhost_debug_force_timeout_channel;
u32 nvhost_debug_force_timeout_dump;
void nvhost_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);
}
static int show_channels(struct platform_device *pdev, void *data,
int locked_id, bool fifo)
{
struct nvhost_channel *ch;
struct output *o = data;
struct nvhost_master *m;
struct nvhost_device_data *pdata;
int index;
if (pdev == NULL)
return 0;
m = nvhost_get_host(pdev);
pdata = platform_get_drvdata(pdev);
for (index = 0; index < pdata->num_channels; index++) {
ch = pdata->channels[index];
if (!ch || !ch->dev) {
nvhost_debug_output(o, "%d channel of %s unmapped\n",
index + 1, pdev->name);
continue;
}
nvhost_getchannel(ch);
if (ch->chid != locked_id)
mutex_lock(&ch->cdma.lock);
if (fifo)
nvhost_get_chip_ops()->debug.show_channel_fifo(
m, ch, o, ch->chid);
nvhost_get_chip_ops()->debug.show_channel_cdma(
m, ch, o, ch->chid);
if (ch->chid != locked_id)
mutex_unlock(&ch->cdma.lock);
nvhost_putchannel(ch);
}
return 0;
}
static int show_channels_fifo(struct platform_device *pdev, void *data,
int locked_id)
{
return show_channels(pdev, data, locked_id, true);
}
static int show_channels_no_fifo(struct platform_device *pdev, void *data,
int locked_id)
{
return show_channels(pdev, data, locked_id, false);
}
static void show_syncpts(struct nvhost_master *m, struct output *o)
{
int i;
nvhost_debug_output(o, "---- syncpts ----\n");
for (i = 0; i < nvhost_syncpt_nb_pts(&m->syncpt); i++) {
bool assigned = nvhost_is_syncpt_assigned(&m->syncpt, i);
u32 max = nvhost_syncpt_read_max(&m->syncpt, i);
u32 min = nvhost_syncpt_update_min(&m->syncpt, i);
if ((!assigned) || (!min && !max))
continue;
nvhost_debug_output(o, "id %d (%s) min %d max %d\n",
i, nvhost_get_chip_ops()->syncpt.name(&m->syncpt, i),
min, max);
}
for (i = 0; i < nvhost_syncpt_nb_bases(&m->syncpt); i++) {
u32 base_val;
base_val = nvhost_syncpt_read_wait_base(&m->syncpt, i);
if (base_val)
nvhost_debug_output(o, "waitbase id %d val %d\n",
i, base_val);
}
nvhost_debug_output(o, "\n");
}
static void show_all(struct nvhost_master *m, struct output *o,
int locked_id)
{
if (nvhost_module_busy(m->dev))
return;
nvhost_get_chip_ops()->debug.show_mlocks(m, o);
show_syncpts(m, o);
nvhost_debug_output(o, "---- channels ----\n");
nvhost_device_list_for_all(o, show_channels_fifo, locked_id);
nvhost_module_idle(m->dev);
}
#ifdef CONFIG_DEBUG_FS
static void show_all_no_fifo(struct nvhost_master *m, struct output *o,
int locked_id)
{
if (nvhost_module_busy(m->dev))
return;
nvhost_get_chip_ops()->debug.show_mlocks(m, o);
show_syncpts(m, o);
nvhost_debug_output(o, "---- channels ----\n");
nvhost_device_list_for_all(o, show_channels_no_fifo, locked_id);
nvhost_module_idle(m->dev);
}
static int nvhost_debug_show_all(struct seq_file *s, void *unused)
{
struct output o = {
.fn = write_to_seqfile,
.ctx = s
};
show_all(s->private, &o, -1);
return 0;
}
static int nvhost_debug_show(struct seq_file *s, void *unused)
{
struct output o = {
.fn = write_to_seqfile,
.ctx = s
};
show_all_no_fifo(s->private, &o, -1);
return 0;
}
static int nvhost_debug_open_all(struct inode *inode, struct file *file)
{
return single_open(file, nvhost_debug_show_all, inode->i_private);
}
static const struct file_operations nvhost_debug_all_fops = {
.open = nvhost_debug_open_all,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int nvhost_debug_open(struct inode *inode, struct file *file)
{
return single_open(file, nvhost_debug_show, inode->i_private);
}
static const struct file_operations nvhost_debug_fops = {
.open = nvhost_debug_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
void nvhost_device_debug_init(struct platform_device *dev)
{
struct nvhost_device_data *pdata = platform_get_drvdata(dev);
pdata->debugfs = debugfs_create_dir(dev->name, pdata->debugfs);
}
void nvhost_device_debug_deinit(struct platform_device *dev)
{
struct nvhost_device_data *pdata = platform_get_drvdata(dev);
if (!IS_ERR_OR_NULL(pdata->debugfs))
debugfs_remove(pdata->debugfs);
pdata->debugfs = NULL;
}
void nvhost_debug_init(struct nvhost_master *master)
{
struct nvhost_device_data *pdata;
struct dentry *de = debugfs_create_dir("tegra_host", NULL);
if (!de)
return;
pdata = platform_get_drvdata(master->dev);
/* Store the created entry */
pdata->debugfs = de;
debugfs_create_file("status", S_IRUGO, de,
master, &nvhost_debug_fops);
debugfs_create_file("status_all", S_IRUGO, de,
master, &nvhost_debug_all_fops);
debugfs_create_u32("null_kickoff_pid", S_IRUGO|S_IWUSR, de,
&nvhost_debug_null_kickoff_pid);
debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
&nvhost_debug_trace_cmdbuf);
if (nvhost_get_chip_ops()->debug.debug_init)
nvhost_get_chip_ops()->debug.debug_init(de);
debugfs_create_u32("force_timeout_pid", S_IRUGO|S_IWUSR, de,
&nvhost_debug_force_timeout_pid);
debugfs_create_u32("force_timeout_val", S_IRUGO|S_IWUSR, de,
&nvhost_debug_force_timeout_val);
debugfs_create_u32("force_timeout_channel", S_IRUGO|S_IWUSR, de,
&nvhost_debug_force_timeout_channel);
debugfs_create_u32("force_timeout_dump", S_IRUGO|S_IWUSR, de,
&nvhost_debug_force_timeout_dump);
nvhost_debug_force_timeout_dump = 0;
#if defined(NVHOST_DEBUG)
debugfs_create_u32("dbg_mask", S_IRUGO|S_IWUSR, de,
&nvhost_dbg_mask);
debugfs_create_u32("dbg_ftrace", S_IRUGO|S_IWUSR, de,
&nvhost_dbg_ftrace);
#endif
debugfs_create_u32("timeout_default_ms", S_IRUGO|S_IWUSR, de,
&pdata->nvhost_timeout_default);
}
void nvhost_debug_dump_locked(struct nvhost_master *master, int locked_id)
{
struct output o = {
.fn = write_to_printk
};
show_all_no_fifo(master, &o, locked_id);
gk20a_debug_dump_device(NULL);
}
void nvhost_debug_dump(struct nvhost_master *master)
{
struct output o = {
.fn = write_to_printk
};
show_all_no_fifo(master, &o, -1);
gk20a_debug_dump_device(NULL);
}
void nvhost_debug_dump_device(struct platform_device *pdev)
{
struct nvhost_master *master = nvhost_get_host(pdev);
struct output o = {
.fn = write_to_printk
};
if (!master)
return;
show_all_no_fifo(master, &o, -1);
}
EXPORT_SYMBOL(nvhost_debug_dump_device);
#endif
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