| /* |
| * 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 "../lib.h" |
| #include "../devices/runtime_pm.h" |
| |
| runtime_tunable::runtime_tunable(const char *path, const char *bus, const char *dev) : 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[4096]; |
| uint16_t vendor = 0, device = 0; |
| |
| sprintf(filename, "/sys/bus/%s/devices/%s/vendor", bus, dev); |
| |
| file.open(filename, ios::in); |
| if (file) { |
| file >> hex >> vendor; |
| file.close(); |
| } |
| |
| |
| sprintf(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)); |
| } |
| |
| |
| } |
| sprintf(toggle_good, "echo 'auto' > '%s';", runtime_path); |
| sprintf(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[4096]; |
| |
| sprintf(filename, "/sys/bus/%s/devices/", bus); |
| dir = opendir(filename); |
| if (!dir) |
| return; |
| while (1) { |
| class runtime_tunable *runtime; |
| |
| entry = readdir(dir); |
| |
| if (!entry) |
| break; |
| if (entry->d_name[0] == '.') |
| continue; |
| |
| sprintf(filename, "/sys/bus/%s/devices/%s", bus, entry->d_name); |
| |
| |
| |
| sprintf(filename, "/sys/bus/%s/devices/%s/power/control", bus, entry->d_name); |
| |
| if (access(filename, R_OK) != 0) |
| continue; |
| |
| |
| sprintf(filename, "/sys/bus/%s/devices/%s", bus, entry->d_name); |
| |
| runtime = new class runtime_tunable(filename, bus, entry->d_name); |
| |
| if (!device_has_runtime_pm(filename)) |
| all_untunables.push_back(runtime); |
| else |
| all_tunables.push_back(runtime); |
| |
| } |
| closedir(dir); |
| } |