Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 1 | #include "occ_status.hpp" |
| 2 | |
Chris Cain | b6535e8 | 2022-01-21 08:24:13 -0600 | [diff] [blame] | 3 | #include <fmt/core.h> |
| 4 | |
Andrew Geissler | 32016d1 | 2017-06-20 15:46:52 -0500 | [diff] [blame] | 5 | #include <phosphor-logging/log.hpp> |
Gunnar Mills | 94df8c9 | 2018-09-14 14:50:03 -0500 | [diff] [blame] | 6 | #include <powercap.hpp> |
George Liu | b5ca101 | 2021-09-10 12:53:11 +0800 | [diff] [blame] | 7 | |
| 8 | #include <cassert> |
Andrew Geissler | 32016d1 | 2017-06-20 15:46:52 -0500 | [diff] [blame] | 9 | |
| 10 | namespace open_power |
| 11 | { |
| 12 | namespace occ |
| 13 | { |
| 14 | namespace powercap |
| 15 | { |
| 16 | |
Gunnar Mills | 94df8c9 | 2018-09-14 14:50:03 -0500 | [diff] [blame] | 17 | constexpr auto PCAP_PATH = "/xyz/openbmc_project/control/host0/power_cap"; |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 18 | constexpr auto PCAP_INTERFACE = "xyz.openbmc_project.Control.Power.Cap"; |
| 19 | |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 20 | constexpr auto POWER_CAP_PROP = "PowerCap"; |
| 21 | constexpr auto POWER_CAP_ENABLE_PROP = "PowerCapEnable"; |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 22 | constexpr auto POWER_CAP_HARD_MIN = "MinPowerCapValue"; |
| 23 | constexpr auto POWER_CAP_MAX = "MaxPowerCapValue"; |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 24 | |
Andrew Geissler | 32016d1 | 2017-06-20 15:46:52 -0500 | [diff] [blame] | 25 | using namespace phosphor::logging; |
George Liu | bcef3b4 | 2021-09-10 12:39:02 +0800 | [diff] [blame] | 26 | namespace fs = std::filesystem; |
Andrew Geissler | 32016d1 | 2017-06-20 15:46:52 -0500 | [diff] [blame] | 27 | |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 28 | void PowerCap::updatePcapBounds() |
| 29 | { |
| 30 | // Build the hwmon string to write the power cap bounds |
| 31 | fs::path minName = getPcapFilename(std::regex{"power\\d+_cap_min$"}); |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 32 | fs::path maxName = getPcapFilename(std::regex{"power\\d+_cap_max$"}); |
| 33 | |
| 34 | // Read the power cap bounds from sysfs files |
| 35 | uint64_t cap; |
Chris Cain | 40501a2 | 2022-03-14 17:33:27 -0500 | [diff] [blame] | 36 | uint32_t capHardMin = 0, capMax = INT_MAX; |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 37 | std::ifstream minFile(minName, std::ios::in); |
| 38 | if (minFile) |
| 39 | { |
| 40 | minFile >> cap; |
| 41 | minFile.close(); |
| 42 | // Convert to Watts |
| 43 | capHardMin = cap / 1000000; |
| 44 | } |
| 45 | else |
| 46 | { |
| 47 | log<level::ERR>( |
| 48 | fmt::format( |
| 49 | "updatePcapBounds: unable to find cap_min file: {} (errno={})", |
| 50 | pcapBasePathname.c_str(), errno) |
| 51 | .c_str()); |
| 52 | } |
| 53 | std::ifstream maxFile(maxName, std::ios::in); |
| 54 | if (maxFile) |
| 55 | { |
| 56 | maxFile >> cap; |
| 57 | maxFile.close(); |
| 58 | // Convert to Watts |
| 59 | capMax = cap / 1000000; |
| 60 | } |
| 61 | else |
| 62 | { |
| 63 | log<level::ERR>( |
| 64 | fmt::format( |
| 65 | "updatePcapBounds: unable to find cap_max file: {} (errno={})", |
| 66 | pcapBasePathname.c_str(), errno) |
| 67 | .c_str()); |
| 68 | } |
| 69 | |
| 70 | // Save the bounds to dbus |
Chris Cain | 40501a2 | 2022-03-14 17:33:27 -0500 | [diff] [blame] | 71 | updateDbusPcap(capHardMin, capMax); |
| 72 | |
| 73 | // Validate dbus and hwmon user caps match |
| 74 | const uint32_t dbusUserCap = getPcap(); |
| 75 | const uint32_t hwmonUserCap = readUserCapHwmon(); |
| 76 | if ((hwmonUserCap != 0) && (dbusUserCap != hwmonUserCap)) |
| 77 | { |
| 78 | // User power cap is enabled, but does not match dbus |
| 79 | log<level::ERR>( |
| 80 | fmt::format( |
| 81 | "updatePcapBounds: user powercap mismatch (hwmon:{}W, bdus:{}W) - using dbus", |
| 82 | hwmonUserCap, dbusUserCap) |
| 83 | .c_str()); |
| 84 | writeOcc(dbusUserCap); |
| 85 | } |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 86 | } |
| 87 | |
Andrew Geissler | 4cea4d2 | 2017-07-10 15:13:33 -0500 | [diff] [blame] | 88 | uint32_t PowerCap::getOccInput(uint32_t pcap, bool pcapEnabled) |
| 89 | { |
| 90 | if (!pcapEnabled) |
| 91 | { |
| 92 | // Pcap disabled, return 0 to indicate disabled |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | // If pcap is not disabled then just return the pcap with the derating |
| 97 | // factor applied. |
Gunnar Mills | 94df8c9 | 2018-09-14 14:50:03 -0500 | [diff] [blame] | 98 | return ((static_cast<uint64_t>(pcap) * PS_DERATING_FACTOR) / 100); |
Andrew Geissler | 4cea4d2 | 2017-07-10 15:13:33 -0500 | [diff] [blame] | 99 | } |
| 100 | |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 101 | uint32_t PowerCap::getPcap() |
| 102 | { |
George Liu | f3b7514 | 2021-06-10 11:22:50 +0800 | [diff] [blame] | 103 | utils::PropertyValue pcap{}; |
| 104 | try |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 105 | { |
George Liu | f3b7514 | 2021-06-10 11:22:50 +0800 | [diff] [blame] | 106 | pcap = utils::getProperty(PCAP_PATH, PCAP_INTERFACE, POWER_CAP_PROP); |
| 107 | |
| 108 | return std::get<uint32_t>(pcap); |
| 109 | } |
Patrick Williams | 2561362 | 2021-09-02 09:29:54 -0500 | [diff] [blame] | 110 | catch (const sdbusplus::exception::exception& e) |
George Liu | f3b7514 | 2021-06-10 11:22:50 +0800 | [diff] [blame] | 111 | { |
| 112 | log<level::ERR>("Failed to get PowerCap property", |
| 113 | entry("ERROR=%s", e.what()), |
| 114 | entry("PATH=%s", PCAP_PATH)); |
| 115 | |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 116 | return 0; |
| 117 | } |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | bool PowerCap::getPcapEnabled() |
| 121 | { |
George Liu | f3b7514 | 2021-06-10 11:22:50 +0800 | [diff] [blame] | 122 | utils::PropertyValue pcapEnabled{}; |
| 123 | try |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 124 | { |
George Liu | f3b7514 | 2021-06-10 11:22:50 +0800 | [diff] [blame] | 125 | pcapEnabled = utils::getProperty(PCAP_PATH, PCAP_INTERFACE, |
| 126 | POWER_CAP_ENABLE_PROP); |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 127 | |
George Liu | f3b7514 | 2021-06-10 11:22:50 +0800 | [diff] [blame] | 128 | return std::get<bool>(pcapEnabled); |
| 129 | } |
Patrick Williams | 2561362 | 2021-09-02 09:29:54 -0500 | [diff] [blame] | 130 | catch (const sdbusplus::exception::exception& e) |
George Liu | f3b7514 | 2021-06-10 11:22:50 +0800 | [diff] [blame] | 131 | { |
| 132 | log<level::ERR>("Failed to get PowerCapEnable property", |
| 133 | entry("ERROR=%s", e.what()), |
| 134 | entry("PATH=%s", PCAP_PATH)); |
| 135 | |
| 136 | return false; |
| 137 | } |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 138 | } |
Andrew Geissler | 32016d1 | 2017-06-20 15:46:52 -0500 | [diff] [blame] | 139 | |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 140 | fs::path PowerCap::getPcapFilename(const std::regex& expr) |
Matt Spinler | eaaf3b2 | 2019-07-16 10:29:27 -0500 | [diff] [blame] | 141 | { |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 142 | if (pcapBasePathname.empty()) |
| 143 | { |
| 144 | static bool tracedError = false; |
| 145 | pcapBasePathname = occStatus.getHwmonPath(); |
| 146 | if (!fs::exists(pcapBasePathname) && !tracedError) |
| 147 | { |
| 148 | log<level::ERR>(fmt::format("Power Cap base filename not found: {}", |
| 149 | pcapBasePathname.c_str()) |
| 150 | .c_str()); |
| 151 | tracedError = true; |
| 152 | } |
| 153 | } |
| 154 | for (auto& file : fs::directory_iterator(pcapBasePathname)) |
Matt Spinler | eaaf3b2 | 2019-07-16 10:29:27 -0500 | [diff] [blame] | 155 | { |
| 156 | if (std::regex_search(file.path().string(), expr)) |
| 157 | { |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 158 | return file; |
Matt Spinler | eaaf3b2 | 2019-07-16 10:29:27 -0500 | [diff] [blame] | 159 | } |
| 160 | } |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 161 | // return empty path |
| 162 | return fs::path{}; |
Matt Spinler | eaaf3b2 | 2019-07-16 10:29:27 -0500 | [diff] [blame] | 163 | } |
| 164 | |
Chris Cain | 40501a2 | 2022-03-14 17:33:27 -0500 | [diff] [blame] | 165 | // Write the user power cap to sysfs. |
| 166 | // This will trigger the driver to send the cap to the OCC |
Andrew Geissler | 6ac874e | 2017-07-10 15:54:58 -0500 | [diff] [blame] | 167 | void PowerCap::writeOcc(uint32_t pcapValue) |
| 168 | { |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 169 | // Build the hwmon string to write the user power cap |
| 170 | fs::path fileName = getPcapFilename(std::regex{"power\\d+_cap_user$"}); |
| 171 | if (fileName.empty()) |
Matt Spinler | eaaf3b2 | 2019-07-16 10:29:27 -0500 | [diff] [blame] | 172 | { |
Chris Cain | b6535e8 | 2022-01-21 08:24:13 -0600 | [diff] [blame] | 173 | log<level::ERR>( |
| 174 | fmt::format("Could not find a power cap file to write to: {})", |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 175 | pcapBasePathname.c_str()) |
Chris Cain | b6535e8 | 2022-01-21 08:24:13 -0600 | [diff] [blame] | 176 | .c_str()); |
Matt Spinler | eaaf3b2 | 2019-07-16 10:29:27 -0500 | [diff] [blame] | 177 | return; |
| 178 | } |
Matt Spinler | eaaf3b2 | 2019-07-16 10:29:27 -0500 | [diff] [blame] | 179 | |
| 180 | uint64_t microWatts = pcapValue * 1000000ull; |
| 181 | |
| 182 | auto pcapString{std::to_string(microWatts)}; |
Andrew Geissler | 6ac874e | 2017-07-10 15:54:58 -0500 | [diff] [blame] | 183 | |
Andrew Geissler | 6ac874e | 2017-07-10 15:54:58 -0500 | [diff] [blame] | 184 | // Open the hwmon file and write the power cap |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 185 | std::ofstream file(fileName, std::ios::out); |
| 186 | if (file) |
| 187 | { |
| 188 | log<level::INFO>(fmt::format("Writing {}uW to {}", pcapString.c_str(), |
| 189 | fileName.c_str()) |
| 190 | .c_str()); |
| 191 | file << pcapString; |
| 192 | file.close(); |
| 193 | } |
| 194 | else |
| 195 | { |
| 196 | log<level::ERR>(fmt::format("Failed writing {}uW to {} (errno={})", |
| 197 | microWatts, fileName.c_str(), errno) |
| 198 | .c_str()); |
| 199 | } |
| 200 | |
Andrew Geissler | 6ac874e | 2017-07-10 15:54:58 -0500 | [diff] [blame] | 201 | return; |
| 202 | } |
| 203 | |
Chris Cain | 40501a2 | 2022-03-14 17:33:27 -0500 | [diff] [blame] | 204 | // Read the current user power cap from sysfs. |
| 205 | uint32_t PowerCap::readUserCapHwmon() |
| 206 | { |
| 207 | uint32_t userCap = 0; |
| 208 | |
| 209 | // Get the sysfs filename for the user power cap |
| 210 | fs::path userCapName = getPcapFilename(std::regex{"power\\d+_cap_user$"}); |
| 211 | if (userCapName.empty()) |
| 212 | { |
| 213 | log<level::ERR>( |
| 214 | fmt::format( |
| 215 | "readUserCapHwmon: Could not find a power cap file to read: {})", |
| 216 | pcapBasePathname.c_str()) |
| 217 | .c_str()); |
| 218 | return 0; |
| 219 | } |
| 220 | |
| 221 | // Open the sysfs file and read the power cap |
| 222 | uint64_t cap; |
| 223 | std::ifstream file(userCapName, std::ios::in); |
| 224 | if (file) |
| 225 | { |
| 226 | file >> cap; |
| 227 | file.close(); |
| 228 | // Convert to Watts |
| 229 | userCap = cap / 1000000; |
| 230 | } |
| 231 | else |
| 232 | { |
| 233 | log<level::ERR>( |
| 234 | fmt::format("readUserCapHwmon: Failed reading {} (errno={})", |
| 235 | userCapName.c_str(), errno) |
| 236 | .c_str()); |
| 237 | } |
| 238 | |
| 239 | return userCap; |
| 240 | } |
| 241 | |
Andrew Geissler | 32016d1 | 2017-06-20 15:46:52 -0500 | [diff] [blame] | 242 | void PowerCap::pcapChanged(sdbusplus::message::message& msg) |
| 243 | { |
Andrew Geissler | 32016d1 | 2017-06-20 15:46:52 -0500 | [diff] [blame] | 244 | if (!occStatus.occActive()) |
| 245 | { |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 246 | // Nothing to do |
Andrew Geissler | 32016d1 | 2017-06-20 15:46:52 -0500 | [diff] [blame] | 247 | return; |
| 248 | } |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 249 | |
| 250 | uint32_t pcap = 0; |
| 251 | bool pcapEnabled = false; |
| 252 | |
| 253 | std::string msgSensor; |
Patrick Williams | e096270 | 2020-05-13 17:50:22 -0500 | [diff] [blame] | 254 | std::map<std::string, std::variant<uint32_t, bool>> msgData; |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 255 | msg.read(msgSensor, msgData); |
| 256 | |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 257 | bool changeFound = false; |
| 258 | for (const auto& [prop, value] : msgData) |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 259 | { |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 260 | if (prop == POWER_CAP_PROP) |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 261 | { |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 262 | pcap = std::get<uint32_t>(value); |
| 263 | pcapEnabled = getPcapEnabled(); |
| 264 | changeFound = true; |
| 265 | } |
| 266 | else if (prop == POWER_CAP_ENABLE_PROP) |
| 267 | { |
| 268 | pcapEnabled = std::get<bool>(value); |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 269 | pcap = getPcap(); |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 270 | changeFound = true; |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 271 | } |
| 272 | else |
| 273 | { |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 274 | // Ignore other properties |
| 275 | log<level::DEBUG>( |
| 276 | fmt::format( |
| 277 | "pcapChanged: Unknown power cap property changed {} to {}", |
| 278 | prop.c_str(), std::get<uint32_t>(value)) |
| 279 | .c_str()); |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 280 | } |
| 281 | } |
| 282 | |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 283 | if (changeFound) |
| 284 | { |
| 285 | log<level::INFO>( |
| 286 | fmt::format( |
| 287 | "Power Cap Property Change (cap={}W (input), enabled={})", pcap, |
| 288 | pcapEnabled ? 'y' : 'n') |
| 289 | .c_str()); |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 290 | |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 291 | // Determine desired action to write to occ |
Andrew Geissler | 6ac874e | 2017-07-10 15:54:58 -0500 | [diff] [blame] | 292 | |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 293 | auto occInput = getOccInput(pcap, pcapEnabled); |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 294 | |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 295 | // Write action to occ |
| 296 | writeOcc(occInput); |
| 297 | } |
Andrew Geissler | 52cf26a | 2017-07-06 12:56:32 -0500 | [diff] [blame] | 298 | |
| 299 | return; |
Andrew Geissler | 32016d1 | 2017-06-20 15:46:52 -0500 | [diff] [blame] | 300 | } |
| 301 | |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 302 | // Update the Power Cap bounds on DBus |
Chris Cain | 40501a2 | 2022-03-14 17:33:27 -0500 | [diff] [blame] | 303 | bool PowerCap::updateDbusPcap(uint32_t hardMin, uint32_t max) |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 304 | { |
| 305 | bool complete = true; |
| 306 | |
| 307 | try |
| 308 | { |
Chris Cain | 5d66a0a | 2022-02-09 08:52:10 -0600 | [diff] [blame] | 309 | utils::setProperty(PCAP_PATH, PCAP_INTERFACE, POWER_CAP_HARD_MIN, |
| 310 | hardMin); |
| 311 | } |
| 312 | catch (const sdbusplus::exception::exception& e) |
| 313 | { |
| 314 | log<level::ERR>( |
| 315 | fmt::format( |
| 316 | "updateDbusPcap: Failed to set HARD PCAP to {}W due to {}", |
| 317 | hardMin, e.what()) |
| 318 | .c_str()); |
| 319 | complete = false; |
| 320 | } |
| 321 | |
| 322 | try |
| 323 | { |
| 324 | utils::setProperty(PCAP_PATH, PCAP_INTERFACE, POWER_CAP_MAX, max); |
| 325 | } |
| 326 | catch (const sdbusplus::exception::exception& e) |
| 327 | { |
| 328 | log<level::ERR>( |
| 329 | fmt::format( |
| 330 | "updateDbusPcap: Failed to set MAX PCAP to {}W due to {}", max, |
| 331 | e.what()) |
| 332 | .c_str()); |
| 333 | complete = false; |
| 334 | } |
| 335 | |
| 336 | return complete; |
| 337 | } |
Gunnar Mills | 94df8c9 | 2018-09-14 14:50:03 -0500 | [diff] [blame] | 338 | } // namespace powercap |
Andrew Geissler | 32016d1 | 2017-06-20 15:46:52 -0500 | [diff] [blame] | 339 | |
| 340 | } // namespace occ |
| 341 | |
Gunnar Mills | 94df8c9 | 2018-09-14 14:50:03 -0500 | [diff] [blame] | 342 | } // namespace open_power |