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/*
* Copyright 2010, Intel Corporation
*
* This file is part of PowerTOP
*
* This program file 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; version 2 of the License.
*
* 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 in a file named COPYING; if not, write to the
* Free Software Foundation, Inc,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
* or just google for it.
*
* Authors:
* Arjan van de Ven <arjan@linux.intel.com>
*/
#include "usb.h"
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <dirent.h>
#include "../lib.h"
#include "../parameters/parameters.h"
#include <iostream>
#include <fstream>
usbdevice::usbdevice(const char *_name, const char *path, const char *devid): device()
{
ifstream file;
char filename[4096];
char vendor[4096];
char product[4096];
strcpy(sysfs_path, path);
register_sysfs_path(sysfs_path);
strcpy(name, _name);
strcpy(devname, devid);
sprintf(humanname, _("USB device: %s"), pretty_print(devid, vendor, 4096));
active_before = 0;
active_after = 0;
connected_before = 0;
connected_after = 0;
index = get_param_index(devname);
r_index = get_result_index(name);
rootport = 0;
cached_valid = 0;
/* root ports and hubs should count as 0 power ... their activity is derived */
sprintf(filename, "%s/bDeviceClass", path);
file.open(filename, ios::in);
if (file) {
int dclass = 0;
file >> dclass;
file.close();
if (dclass == 9)
rootport = 1;
};
vendor[0] = 0;
product[0] = 0;
sprintf(filename, "%s/manufacturer", path);
file.open(filename, ios::in);
if (file) {
file.getline(vendor, 2047);
if (strstr(vendor, "Linux "))
vendor[0] = 0;
file.close();
};
sprintf(filename, "%s/product", path);
file.open(filename, ios::in);
if (file) {
file.getline(product, 2040);
file.close();
};
if (strlen(vendor) && strlen(product))
sprintf(humanname, _("USB device: %s (%s)"), product, vendor);
else if (strlen(product))
sprintf(humanname, _("USB device: %s"), product);
else if (strlen(vendor))
sprintf(humanname, _("USB device: %s"), vendor);
}
void usbdevice::start_measurement(void)
{
ifstream file;
char fullpath[4096];
active_before = 0;
active_after = 0;
connected_before = 0;
connected_after = 0;
sprintf(fullpath, "%s/power/active_duration", sysfs_path);
file.open(fullpath, ios::in);
if (file) {
file >> active_before;
}
file.close();
sprintf(fullpath, "%s/power/connected_duration", sysfs_path);
file.open(fullpath, ios::in);
if (file) {
file >> connected_before;
}
file.close();
}
void usbdevice::end_measurement(void)
{
ifstream file;
char fullpath[4096];
sprintf(fullpath, "%s/power/active_duration", sysfs_path);
file.open(fullpath, ios::in);
if (file) {
file >> active_after;
}
file.close();
sprintf(fullpath, "%s/power/connected_duration", sysfs_path);
file.open(fullpath, ios::in);
if (file) {
file >> connected_after;
}
file.close();
report_utilization(name, utilization());
}
double usbdevice::utilization(void) /* percentage */
{
double d;
d = 100.0 * (active_after - active_before) / (0.01 + connected_after - connected_before);
if (d < 0.0)
d = 0.0;
if (d > 99.8)
d = 100.0;
return d;
}
const char * usbdevice::device_name(void)
{
return name;
}
const char * usbdevice::human_name(void)
{
return humanname;
}
double usbdevice::power_usage(struct result_bundle *result, struct parameter_bundle *bundle)
{
double power;
double factor;
double util;
if (rootport || !cached_valid)
return 0.0;
power = 0;
factor = get_parameter_value(index, bundle);
util = get_result_value(r_index, result);
power += util * factor / 100.0;
return power;
}
void create_all_usb_devices(void)
{
struct dirent *entry;
DIR *dir;
char filename[4096];
dir = opendir("/sys/bus/usb/devices/");
if (!dir)
return;
while (1) {
ifstream file;
class usbdevice *usb;
char device_name[4096];
char vendorid[64], devid[64];
char devid_name[4096];
entry = readdir(dir);
if (!entry)
break;
if (entry->d_name[0] == '.')
continue;
sprintf(filename, "/sys/bus/usb/devices/%s", entry->d_name);
sprintf(device_name, "%s/power/active_duration", filename);
if (access(device_name, R_OK)!=0)
continue;
sprintf(device_name, "%s/idVendor", filename);
file.open(device_name, ios::in);
if (file)
file.getline(vendorid, 64);
file.close();
sprintf(device_name, "%s/idProduct", filename);
file.open(device_name, ios::in);
if (file)
file.getline(devid, 64);
file.close();
sprintf(devid_name, "usb-device-%s-%s", vendorid, devid);
sprintf(device_name, "usb-device-%s-%s-%s", entry->d_name, vendorid, devid);
if (result_device_exists(device_name))
continue;
usb = new class usbdevice(device_name, filename, devid_name);
all_devices.push_back(usb);
register_parameter(devid_name, 0.1);
}
closedir(dir);
}
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