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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 "tuning.h"
#include "tunable.h"
#include "unistd.h"
#include "runtime.h"
#include <string.h>
#include <utility>
#include <iostream>
#include <fstream>
#include <unistd.h>
#include <sys/types.h>
#include <dirent.h>
#include <limits.h>
#include "../lib.h"
#include "../devices/runtime_pm.h"
runtime_tunable::runtime_tunable(const char *path, const char *bus, const char *dev, const char *port) : tunable("", 0.4, _("Good"), _("Bad"), _("Unknown"))
{
ifstream file;
sprintf(runtime_path, "%s/power/control", path);
sprintf(desc, _("Runtime PM for %s device %s"), bus, dev);
if (!device_has_runtime_pm(path))
sprintf(desc, _("%s device %s has no runtime power management"), bus, dev);
if (strcmp(bus, "pci") == 0) {
char filename[PATH_MAX];
uint16_t vendor = 0, device = 0;
snprintf(filename, sizeof(filename), "/sys/bus/%s/devices/%s/vendor", bus, dev);
file.open(filename, ios::in);
if (file) {
file >> hex >> vendor;
file.close();
}
snprintf(filename, sizeof(filename), "/sys/bus/%s/devices/%s/device", bus, dev);
file.open(filename, ios::in);
if (file) {
file >> hex >> device;
file.close();
}
if (vendor && device) {
if (!device_has_runtime_pm(path))
sprintf(desc, _("PCI Device %s has no runtime power management"), pci_id_to_name(vendor, device, filename, 4095));
else
sprintf(desc, _("Runtime PM for PCI Device %s"), pci_id_to_name(vendor, device, filename, 4095));
}
if (string(path).find("ata") != string::npos)
sprintf(desc, _("Runtime PM for port %s of PCI device: %s"), port, pci_id_to_name(vendor, device, filename, 4095));
if (string(path).find("block") != string::npos)
sprintf(desc, _("Runtime PM for disk %s"), port);
}
snprintf(toggle_good, sizeof(toggle_good), "echo 'auto' > '%s';", runtime_path);
snprintf(toggle_bad, sizeof(toggle_bad), "echo 'on' > '%s';", runtime_path);
}
int runtime_tunable::good_bad(void)
{
string content;
content = read_sysfs_string(runtime_path);
if (strcmp(content.c_str(), "auto") == 0)
return TUNE_GOOD;
return TUNE_BAD;
}
void runtime_tunable::toggle(void)
{
int good;
good = good_bad();
if (good == TUNE_GOOD) {
write_sysfs(runtime_path, "on");
return;
}
write_sysfs(runtime_path, "auto");
}
const char *runtime_tunable::toggle_script(void)
{
int good;
good = good_bad();
if (good == TUNE_GOOD) {
return toggle_bad;
}
return toggle_good;
}
void add_runtime_tunables(const char *bus)
{
struct dirent *entry;
DIR *dir;
char filename[PATH_MAX], port[PATH_MAX];
int max_ports = 32, count=0;
snprintf(filename, sizeof(filename), "/sys/bus/%s/devices/", bus);
dir = opendir(filename);
if (!dir)
return;
while (1) {
class runtime_tunable *runtime, *runtime_ahci_port, *runtime_ahci_disk;
entry = readdir(dir);
if (!entry)
break;
if (entry->d_name[0] == '.')
continue;
snprintf(filename, sizeof(filename), "/sys/bus/%s/devices/%s/power/control", bus, entry->d_name);
if (access(filename, R_OK) != 0)
continue;
snprintf(filename, sizeof(filename), "/sys/bus/%s/devices/%s", bus, entry->d_name);
runtime = new class runtime_tunable(filename, bus, entry->d_name, NULL);
if (!device_has_runtime_pm(filename))
all_untunables.push_back(runtime);
else
all_tunables.push_back(runtime);
for (int i=0; i < max_ports; i++) {
snprintf(port, sizeof(port), "ata%d", i);
snprintf(filename, sizeof(filename), "/sys/bus/%s/devices/%s/%s/power/control", bus, entry->d_name, port);
if (access(filename, R_OK) != 0)
continue;
snprintf(filename, sizeof(filename), "/sys/bus/%s/devices/%s/%s", bus, entry->d_name, port);
runtime_ahci_port = new class runtime_tunable(filename, bus, entry->d_name, port);
if (!device_has_runtime_pm(filename))
all_untunables.push_back(runtime_ahci_port);
else
all_tunables.push_back(runtime_ahci_port);
}
for (char blk = 'a'; blk <= 'z'; blk++)
{
if (count != 0)
break;
snprintf(filename, sizeof(filename), "/sys/block/sd%c/device/power/control", blk);
if (access(filename, R_OK) != 0)
continue;
snprintf(port, sizeof(port), "sd%c", blk);
snprintf(filename, sizeof(filename), "/sys/block/%s/device", port);
runtime_ahci_disk = new class runtime_tunable(filename, bus, entry->d_name, port);
if (!device_has_runtime_pm(filename))
all_untunables.push_back(runtime_ahci_disk);
else
all_tunables.push_back(runtime_ahci_disk);
}
count = 1;
}
closedir(dir);
}
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