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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 <limits.h>
#include "../lib.h"
#include "../devlist.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[PATH_MAX];
char vendor[4096];
char product[4096];
pt_strcpy(sysfs_path, path);
register_sysfs_path(sysfs_path);
pt_strcpy(name, _name);
pt_strcpy(devname, devid);
snprintf(humanname, sizeof(humanname), _("USB device: %s"), pretty_print(devid, vendor, 4096));
active_before = 0;
active_after = 0;
connected_before = 0;
connected_after = 0;
busnum = 0;
devnum = 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 */
snprintf(filename, sizeof(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;
snprintf(filename, sizeof(filename), "%s/manufacturer", path);
file.open(filename, ios::in);
if (file) {
file.getline(vendor, 2047);
if (strstr(vendor, "Linux "))
vendor[0] = 0;
file.close();
};
snprintf(filename, sizeof(filename), "%s/product", path);
file.open(filename, ios::in);
if (file) {
file.getline(product, 2040);
file.close();
};
if (strlen(vendor) && strlen(product))
snprintf(humanname, sizeof(humanname), _("USB device: %s (%s)"), product, vendor);
else if (strlen(product))
snprintf(humanname, sizeof(humanname), _("USB device: %s"), product);
else if (strlen(vendor))
snprintf(humanname, sizeof(humanname), _("USB device: %s"), vendor);
/* For usbdevfs we need bus number and device number */
snprintf(filename, sizeof(filename), "%s/busnum", path);
file.open(filename, ios::in);
if (file) {
file >> busnum;
file.close();
};
snprintf(filename, sizeof(filename), "%s/devnum", path);
file.open(filename, ios::in);
if (file) {
file >> devnum;
file.close();
};
}
void usbdevice::start_measurement(void)
{
ifstream file;
char fullpath[PATH_MAX];
active_before = 0;
active_after = 0;
connected_before = 0;
connected_after = 0;
snprintf(fullpath, sizeof(fullpath), "%s/power/active_duration", sysfs_path);
file.open(fullpath, ios::in);
if (file) {
file >> active_before;
}
file.close();
snprintf(fullpath, sizeof(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[PATH_MAX];
snprintf(fullpath, sizeof(fullpath), "%s/power/active_duration", sysfs_path);
file.open(fullpath, ios::in);
if (file) {
file >> active_after;
}
file.close();
snprintf(fullpath, sizeof(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;
}
void usbdevice::register_power_with_devlist(struct result_bundle *results, struct parameter_bundle *bundle)
{
char devfs_name[1024];
snprintf(devfs_name, sizeof(devfs_name), "usb/%03d/%03d", busnum,
devnum);
register_devpower(devfs_name, power_usage(results, bundle), this);
}
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;
}
static void create_all_usb_devices_callback(const char *d_name)
{
char filename[PATH_MAX];
ifstream file;
class usbdevice *usb;
char device_name[PATH_MAX];
char vendorid[64], devid[64];
char devid_name[4096];
snprintf(filename, sizeof(filename), "/sys/bus/usb/devices/%s", d_name);
snprintf(device_name, sizeof(device_name), "%s/power/active_duration", filename);
if (access(device_name, R_OK) != 0)
return;
snprintf(device_name, sizeof(device_name), "%s/idVendor", filename);
file.open(device_name, ios::in);
if (file)
file.getline(vendorid, 64);
file.close();
snprintf(device_name, sizeof(device_name), "%s/idProduct", filename);
file.open(device_name, ios::in);
if (file)
file.getline(devid, 64);
file.close();
snprintf(devid_name, sizeof(devid_name), "usb-device-%s-%s", vendorid, devid);
snprintf(device_name, sizeof(device_name), "usb-device-%s-%s-%s", d_name, vendorid, devid);
if (result_device_exists(device_name))
return;
usb = new class usbdevice(device_name, filename, devid_name);
all_devices.push_back(usb);
register_parameter(devid_name, 0.1);
}
void create_all_usb_devices(void)
{
process_directory("/sys/bus/usb/devices/", create_all_usb_devices_callback);
}
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