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Diffstat (limited to 'src/tuning/runtime.cpp')
| -rw-r--r-- | src/tuning/runtime.cpp | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/tuning/runtime.cpp b/src/tuning/runtime.cpp new file mode 100644 index 0000000..cb62533 --- /dev/null +++ b/src/tuning/runtime.cpp @@ -0,0 +1,202 @@ +/* + * 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); +} |