- 根目录:
- drivers
- media
- common
- siano
- smsdvb-debugfs.c
/***********************************************************************
*
* Copyright(c) 2013 Mauro Carvalho Chehab
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
***********************************************************************/
#include "smscoreapi.h"
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/debugfs.h>
#include <linux/spinlock.h>
#include <linux/usb.h>
#include "dmxdev.h"
#include "dvbdev.h"
#include "dvb_demux.h"
#include "dvb_frontend.h"
#include "smsdvb.h"
static struct dentry *smsdvb_debugfs_usb_root;
struct smsdvb_debugfs {
struct kref refcount;
spinlock_t lock;
char stats_data[PAGE_SIZE];
unsigned stats_count;
bool stats_was_read;
wait_queue_head_t stats_queue;
};
static void smsdvb_print_dvb_stats(struct smsdvb_debugfs *debug_data,
struct sms_stats *p)
{
int n = 0;
char *buf;
spin_lock(&debug_data->lock);
if (debug_data->stats_count) {
spin_unlock(&debug_data->lock);
return;
}
buf = debug_data->stats_data;
n += snprintf(&buf[n], PAGE_SIZE - n,
"is_rf_locked = %d\n", p->is_rf_locked);
n += snprintf(&buf[n], PAGE_SIZE - n,
"is_demod_locked = %d\n", p->is_demod_locked);
n += snprintf(&buf[n], PAGE_SIZE - n,
"is_external_lna_on = %d\n", p->is_external_lna_on);
n += snprintf(&buf[n], PAGE_SIZE - n,
"SNR = %d\n", p->SNR);
n += snprintf(&buf[n], PAGE_SIZE - n,
"ber = %d\n", p->ber);
n += snprintf(&buf[n], PAGE_SIZE - n,
"FIB_CRC = %d\n", p->FIB_CRC);
n += snprintf(&buf[n], PAGE_SIZE - n,
"ts_per = %d\n", p->ts_per);
n += snprintf(&buf[n], PAGE_SIZE - n,
"MFER = %d\n", p->MFER);
n += snprintf(&buf[n], PAGE_SIZE - n,
"RSSI = %d\n", p->RSSI);
n += snprintf(&buf[n], PAGE_SIZE - n,
"in_band_pwr = %d\n", p->in_band_pwr);
n += snprintf(&buf[n], PAGE_SIZE - n,
"carrier_offset = %d\n", p->carrier_offset);
n += snprintf(&buf[n], PAGE_SIZE - n,
"modem_state = %d\n", p->modem_state);
n += snprintf(&buf[n], PAGE_SIZE - n,
"frequency = %d\n", p->frequency);
n += snprintf(&buf[n], PAGE_SIZE - n,
"bandwidth = %d\n", p->bandwidth);
n += snprintf(&buf[n], PAGE_SIZE - n,
"transmission_mode = %d\n", p->transmission_mode);
n += snprintf(&buf[n], PAGE_SIZE - n,
"modem_state = %d\n", p->modem_state);
n += snprintf(&buf[n], PAGE_SIZE - n,
"guard_interval = %d\n", p->guard_interval);
n += snprintf(&buf[n], PAGE_SIZE - n,
"code_rate = %d\n", p->code_rate);
n += snprintf(&buf[n], PAGE_SIZE - n,
"lp_code_rate = %d\n", p->lp_code_rate);
n += snprintf(&buf[n], PAGE_SIZE - n,
"hierarchy = %d\n", p->hierarchy);
n += snprintf(&buf[n], PAGE_SIZE - n,
"constellation = %d\n", p->constellation);
n += snprintf(&buf[n], PAGE_SIZE - n,
"burst_size = %d\n", p->burst_size);
n += snprintf(&buf[n], PAGE_SIZE - n,
"burst_duration = %d\n", p->burst_duration);
n += snprintf(&buf[n], PAGE_SIZE - n,
"burst_cycle_time = %d\n", p->burst_cycle_time);
n += snprintf(&buf[n], PAGE_SIZE - n,
"calc_burst_cycle_time = %d\n",
p->calc_burst_cycle_time);
n += snprintf(&buf[n], PAGE_SIZE - n,
"num_of_rows = %d\n", p->num_of_rows);
n += snprintf(&buf[n], PAGE_SIZE - n,
"num_of_padd_cols = %d\n", p->num_of_padd_cols);
n += snprintf(&buf[n], PAGE_SIZE - n,
"num_of_punct_cols = %d\n", p->num_of_punct_cols);
n += snprintf(&buf[n], PAGE_SIZE - n,
"error_ts_packets = %d\n", p->error_ts_packets);
n += snprintf(&buf[n], PAGE_SIZE - n,
"total_ts_packets = %d\n", p->total_ts_packets);
n += snprintf(&buf[n], PAGE_SIZE - n,
"num_of_valid_mpe_tlbs = %d\n", p->num_of_valid_mpe_tlbs);
n += snprintf(&buf[n], PAGE_SIZE - n,
"num_of_invalid_mpe_tlbs = %d\n", p->num_of_invalid_mpe_tlbs);
n += snprintf(&buf[n], PAGE_SIZE - n,
"num_of_corrected_mpe_tlbs = %d\n", p->num_of_corrected_mpe_tlbs);
n += snprintf(&buf[n], PAGE_SIZE - n,
"ber_error_count = %d\n", p->ber_error_count);
n += snprintf(&buf[n], PAGE_SIZE - n,
"ber_bit_count = %d\n", p->ber_bit_count);
n += snprintf(&buf[n], PAGE_SIZE - n,
"sms_to_host_tx_errors = %d\n", p->sms_to_host_tx_errors);
n += snprintf(&buf[n], PAGE_SIZE - n,
"pre_ber = %d\n", p->pre_ber);
n += snprintf(&buf[n], PAGE_SIZE - n,
"cell_id = %d\n", p->cell_id);
n += snprintf(&buf[n], PAGE_SIZE - n,
"dvbh_srv_ind_hp = %d\n", p->dvbh_srv_ind_hp);
n += snprintf(&buf[n], PAGE_SIZE - n,
"dvbh_srv_ind_lp = %d\n", p->dvbh_srv_ind_lp);
n += snprintf(&buf[n], PAGE_SIZE - n,
"num_mpe_received = %d\n", p->num_mpe_received);
debug_data->stats_count = n;
spin_unlock(&debug_data->lock);
wake_up(&debug_data->stats_queue);
}
static void smsdvb_print_isdb_stats(struct smsdvb_debugfs *debug_data,
struct sms_isdbt_stats *p)
{
int i, n = 0;
char *buf;
spin_lock(&debug_data->lock);
if (debug_data->stats_count) {
spin_unlock(&debug_data->lock);
return;
}
buf = debug_data->stats_data;
n += snprintf(&buf[n], PAGE_SIZE - n,
"statistics_type = %d\t", p->statistics_type);
n += snprintf(&buf[n], PAGE_SIZE - n,
"full_size = %d\n", p->full_size);
n += snprintf(&buf[n], PAGE_SIZE - n,
"is_rf_locked = %d\t\t", p->is_rf_locked);
n += snprintf(&buf[n], PAGE_SIZE - n,
"is_demod_locked = %d\t", p->is_demod_locked);
n += snprintf(&buf[n], PAGE_SIZE - n,
"is_external_lna_on = %d\n", p->is_external_lna_on);
n += snprintf(&buf[n], PAGE_SIZE - n,
"SNR = %d dB\t\t", p->SNR);
n += snprintf(&buf[n], PAGE_SIZE - n,
"RSSI = %d dBm\t\t", p->RSSI);
n += snprintf(&buf[n], PAGE_SIZE - n,
"in_band_pwr = %d dBm\n", p->in_band_pwr);
n += snprintf(&buf[n], PAGE_SIZE - n,
"carrier_offset = %d\t", p->carrier_offset);
n += snprintf(&buf[n], PAGE_SIZE - n,
"bandwidth = %d\t\t", p->bandwidth);
n += snprintf(&buf[n], PAGE_SIZE - n,
"frequency = %d Hz\n", p->frequency);
n += snprintf(&buf[n], PAGE_SIZE - n,
"transmission_mode = %d\t", p->transmission_mode);
n += snprintf(&buf[n], PAGE_SIZE - n,
"modem_state = %d\t\t", p->modem_state);
n += snprintf(&buf[n], PAGE_SIZE - n,
"guard_interval = %d\n", p->guard_interval);
n += snprintf(&buf[n], PAGE_SIZE - n,
"system_type = %d\t\t", p->system_type);
n += snprintf(&buf[n], PAGE_SIZE - n,
"partial_reception = %d\t", p->partial_reception);
n += snprintf(&buf[n], PAGE_SIZE - n,
"num_of_layers = %d\n", p->num_of_layers);
n += snprintf(&buf[n], PAGE_SIZE - n,
"sms_to_host_tx_errors = %d\n", p->sms_to_host_tx_errors);
for (i = 0; i < 3; i++) {
if (p->layer_info[i].number_of_segments < 1 ||
p->layer_info[i].number_of_segments > 13)
continue;
n += snprintf(&buf[n], PAGE_SIZE - n, "\nLayer %d\n", i);
n += snprintf(&buf[n], PAGE_SIZE - n, "\tcode_rate = %d\t",
p->layer_info[i].code_rate);
n += snprintf(&buf[n], PAGE_SIZE - n, "constellation = %d\n",
p->layer_info[i].constellation);
n += snprintf(&buf[n], PAGE_SIZE - n, "\tber = %-5d\t",
p->layer_info[i].ber);
n += snprintf(&buf[n], PAGE_SIZE - n, "\tber_error_count = %-5d\t",
p->layer_info[i].ber_error_count);
n += snprintf(&buf[n], PAGE_SIZE - n, "ber_bit_count = %-5d\n",
p->layer_info[i].ber_bit_count);
n += snprintf(&buf[n], PAGE_SIZE - n, "\tpre_ber = %-5d\t",
p->layer_info[i].pre_ber);
n += snprintf(&buf[n], PAGE_SIZE - n, "\tts_per = %-5d\n",
p->layer_info[i].ts_per);
n += snprintf(&buf[n], PAGE_SIZE - n, "\terror_ts_packets = %-5d\t",
p->layer_info[i].error_ts_packets);
n += snprintf(&buf[n], PAGE_SIZE - n, "total_ts_packets = %-5d\t",
p->layer_info[i].total_ts_packets);
n += snprintf(&buf[n], PAGE_SIZE - n, "ti_ldepth_i = %d\n",
p->layer_info[i].ti_ldepth_i);
n += snprintf(&buf[n], PAGE_SIZE - n,
"\tnumber_of_segments = %d\t",
p->layer_info[i].number_of_segments);
n += snprintf(&buf[n], PAGE_SIZE - n, "tmcc_errors = %d\n",
p->layer_info[i].tmcc_errors);
}
debug_data->stats_count = n;
spin_unlock(&debug_data->lock);
wake_up(&debug_data->stats_queue);
}
static void smsdvb_print_isdb_stats_ex(struct smsdvb_debugfs *debug_data,
struct sms_isdbt_stats_ex *p)
{
int i, n = 0;
char *buf;
spin_lock(&debug_data->lock);
if (debug_data->stats_count) {
spin_unlock(&debug_data->lock);
return;
}
buf = debug_data->stats_data;
n += snprintf(&buf[n], PAGE_SIZE - n,
"statistics_type = %d\t", p->statistics_type);
n += snprintf(&buf[n], PAGE_SIZE - n,
"full_size = %d\n", p->full_size);
n += snprintf(&buf[n], PAGE_SIZE - n,
"is_rf_locked = %d\t\t", p->is_rf_locked);
n += snprintf(&buf[n], PAGE_SIZE - n,
"is_demod_locked = %d\t", p->is_demod_locked);
n += snprintf(&buf[n], PAGE_SIZE - n,
"is_external_lna_on = %d\n", p->is_external_lna_on);
n += snprintf(&buf[n], PAGE_SIZE - n,
"SNR = %d dB\t\t", p->SNR);
n += snprintf(&buf[n], PAGE_SIZE - n,
"RSSI = %d dBm\t\t", p->RSSI);
n += snprintf(&buf[n], PAGE_SIZE - n,
"in_band_pwr = %d dBm\n", p->in_band_pwr);
n += snprintf(&buf[n], PAGE_SIZE - n,
"carrier_offset = %d\t", p->carrier_offset);
n += snprintf(&buf[n], PAGE_SIZE - n,
"bandwidth = %d\t\t", p->bandwidth);
n += snprintf(&buf[n], PAGE_SIZE - n,
"frequency = %d Hz\n", p->frequency);
n += snprintf(&buf[n], PAGE_SIZE - n,
"transmission_mode = %d\t", p->transmission_mode);
n += snprintf(&buf[n], PAGE_SIZE - n,
"modem_state = %d\t\t", p->modem_state);
n += snprintf(&buf[n], PAGE_SIZE - n,
"guard_interval = %d\n", p->guard_interval);
n += snprintf(&buf[n], PAGE_SIZE - n,
"system_type = %d\t\t", p->system_type);
n += snprintf(&buf[n], PAGE_SIZE - n,
"partial_reception = %d\t", p->partial_reception);
n += snprintf(&buf[n], PAGE_SIZE - n,
"num_of_layers = %d\n", p->num_of_layers);
n += snprintf(&buf[n], PAGE_SIZE - n, "segment_number = %d\t",
p->segment_number);
n += snprintf(&buf[n], PAGE_SIZE - n, "tune_bw = %d\n",
p->tune_bw);
for (i = 0; i < 3; i++) {
if (p->layer_info[i].number_of_segments < 1 ||
p->layer_info[i].number_of_segments > 13)
continue;
n += snprintf(&buf[n], PAGE_SIZE - n, "\nLayer %d\n", i);
n += snprintf(&buf[n], PAGE_SIZE - n, "\tcode_rate = %d\t",
p->layer_info[i].code_rate);
n += snprintf(&buf[n], PAGE_SIZE - n, "constellation = %d\n",
p->layer_info[i].constellation);
n += snprintf(&buf[n], PAGE_SIZE - n, "\tber = %-5d\t",
p->layer_info[i].ber);
n += snprintf(&buf[n], PAGE_SIZE - n, "\tber_error_count = %-5d\t",
p->layer_info[i].ber_error_count);
n += snprintf(&buf[n], PAGE_SIZE - n, "ber_bit_count = %-5d\n",
p->layer_info[i].ber_bit_count);
n += snprintf(&buf[n], PAGE_SIZE - n, "\tpre_ber = %-5d\t",
p->layer_info[i].pre_ber);
n += snprintf(&buf[n], PAGE_SIZE - n, "\tts_per = %-5d\n",
p->layer_info[i].ts_per);
n += snprintf(&buf[n], PAGE_SIZE - n, "\terror_ts_packets = %-5d\t",
p->layer_info[i].error_ts_packets);
n += snprintf(&buf[n], PAGE_SIZE - n, "total_ts_packets = %-5d\t",
p->layer_info[i].total_ts_packets);
n += snprintf(&buf[n], PAGE_SIZE - n, "ti_ldepth_i = %d\n",
p->layer_info[i].ti_ldepth_i);
n += snprintf(&buf[n], PAGE_SIZE - n,
"\tnumber_of_segments = %d\t",
p->layer_info[i].number_of_segments);
n += snprintf(&buf[n], PAGE_SIZE - n, "tmcc_errors = %d\n",
p->layer_info[i].tmcc_errors);
}
debug_data->stats_count = n;
spin_unlock(&debug_data->lock);
wake_up(&debug_data->stats_queue);
}
static int smsdvb_stats_open(struct inode *inode, struct file *file)
{
struct smsdvb_client_t *client = inode->i_private;
struct smsdvb_debugfs *debug_data = client->debug_data;
kref_get(&debug_data->refcount);
spin_lock(&debug_data->lock);
debug_data->stats_count = 0;
debug_data->stats_was_read = false;
spin_unlock(&debug_data->lock);
file->private_data = debug_data;
return 0;
}
static void smsdvb_debugfs_data_release(struct kref *ref)
{
struct smsdvb_debugfs *debug_data;
debug_data = container_of(ref, struct smsdvb_debugfs, refcount);
kfree(debug_data);
}
static int smsdvb_stats_wait_read(struct smsdvb_debugfs *debug_data)
{
int rc = 1;
spin_lock(&debug_data->lock);
if (debug_data->stats_was_read)
goto exit;
rc = debug_data->stats_count;
exit:
spin_unlock(&debug_data->lock);
return rc;
}
static unsigned int smsdvb_stats_poll(struct file *file, poll_table *wait)
{
struct smsdvb_debugfs *debug_data = file->private_data;
int rc;
kref_get(&debug_data->refcount);
poll_wait(file, &debug_data->stats_queue, wait);
rc = smsdvb_stats_wait_read(debug_data);
if (rc > 0)
rc = POLLIN | POLLRDNORM;
kref_put(&debug_data->refcount, smsdvb_debugfs_data_release);
return rc;
}
static ssize_t smsdvb_stats_read(struct file *file, char __user *user_buf,
size_t nbytes, loff_t *ppos)
{
int rc = 0, len;
struct smsdvb_debugfs *debug_data = file->private_data;
kref_get(&debug_data->refcount);
if (file->f_flags & O_NONBLOCK) {
rc = smsdvb_stats_wait_read(debug_data);
if (!rc) {
rc = -EWOULDBLOCK;
goto ret;
}
} else {
rc = wait_event_interruptible(debug_data->stats_queue,
smsdvb_stats_wait_read(debug_data));
if (rc < 0)
goto ret;
}
if (debug_data->stats_was_read) {
rc = 0; /* EOF */
goto ret;
}
len = debug_data->stats_count - *ppos;
if (len >= 0)
rc = simple_read_from_buffer(user_buf, nbytes, ppos,
debug_data->stats_data, len);
else
rc = 0;
if (*ppos >= debug_data->stats_count) {
spin_lock(&debug_data->lock);
debug_data->stats_was_read = true;
spin_unlock(&debug_data->lock);
}
ret:
kref_put(&debug_data->refcount, smsdvb_debugfs_data_release);
return rc;
}
static int smsdvb_stats_release(struct inode *inode, struct file *file)
{
struct smsdvb_debugfs *debug_data = file->private_data;
spin_lock(&debug_data->lock);
debug_data->stats_was_read = true; /* return EOF to read() */
spin_unlock(&debug_data->lock);
wake_up_interruptible_sync(&debug_data->stats_queue);
kref_put(&debug_data->refcount, smsdvb_debugfs_data_release);
file->private_data = NULL;
return 0;
}
static const struct file_operations debugfs_stats_ops = {
.open = smsdvb_stats_open,
.poll = smsdvb_stats_poll,
.read = smsdvb_stats_read,
.release = smsdvb_stats_release,
.llseek = generic_file_llseek,
};
/*
* Functions used by smsdvb, in order to create the interfaces
*/
int smsdvb_debugfs_create(struct smsdvb_client_t *client)
{
struct smscore_device_t *coredev = client->coredev;
struct dentry *d;
struct smsdvb_debugfs *debug_data;
if (!smsdvb_debugfs_usb_root || !coredev->is_usb_device)
return -ENODEV;
client->debugfs = debugfs_create_dir(coredev->devpath,
smsdvb_debugfs_usb_root);
if (IS_ERR_OR_NULL(client->debugfs)) {
pr_info("Unable to create debugfs %s directory.\n",
coredev->devpath);
return -ENODEV;
}
d = debugfs_create_file("stats", S_IRUGO | S_IWUSR, client->debugfs,
client, &debugfs_stats_ops);
if (!d) {
debugfs_remove(client->debugfs);
return -ENOMEM;
}
debug_data = kzalloc(sizeof(*client->debug_data), GFP_KERNEL);
if (!debug_data)
return -ENOMEM;
client->debug_data = debug_data;
client->prt_dvb_stats = smsdvb_print_dvb_stats;
client->prt_isdb_stats = smsdvb_print_isdb_stats;
client->prt_isdb_stats_ex = smsdvb_print_isdb_stats_ex;
init_waitqueue_head(&debug_data->stats_queue);
spin_lock_init(&debug_data->lock);
kref_init(&debug_data->refcount);
return 0;
}
void smsdvb_debugfs_release(struct smsdvb_client_t *client)
{
if (!client->debugfs)
return;
client->prt_dvb_stats = NULL;
client->prt_isdb_stats = NULL;
client->prt_isdb_stats_ex = NULL;
debugfs_remove_recursive(client->debugfs);
kref_put(&client->debug_data->refcount, smsdvb_debugfs_data_release);
client->debug_data = NULL;
client->debugfs = NULL;
}
int smsdvb_debugfs_register(void)
{
struct dentry *d;
/*
* FIXME: This was written to debug Siano USB devices. So, it creates
* the debugfs node under <debugfs>/usb.
* A similar logic would be needed for Siano sdio devices, but, in that
* case, usb_debug_root is not a good choice.
*
* Perhaps the right fix here would be to create another sysfs root
* node for sdio-based boards, but this may need some logic at sdio
* subsystem.
*/
d = debugfs_create_dir("smsdvb", usb_debug_root);
if (IS_ERR_OR_NULL(d)) {
pr_err("Couldn't create sysfs node for smsdvb\n");
return PTR_ERR(d);
} else {
smsdvb_debugfs_usb_root = d;
}
return 0;
}
void smsdvb_debugfs_unregister(void)
{
debugfs_remove_recursive(smsdvb_debugfs_usb_root);
smsdvb_debugfs_usb_root = NULL;
}