Alpana Kumari | b17dd3b | 2020-10-01 00:18:10 -0500 | [diff] [blame] | 1 | #include "gpioMonitor.hpp" |
| 2 | |
| 3 | #include "common_utility.hpp" |
| 4 | #include "ibm_vpd_utils.hpp" |
| 5 | |
| 6 | #include <systemd/sd-event.h> |
| 7 | |
| 8 | #include <chrono> |
| 9 | #include <gpiod.hpp> |
| 10 | #include <sdeventplus/clock.hpp> |
| 11 | #include <sdeventplus/utility/timer.hpp> |
| 12 | |
| 13 | using namespace std; |
| 14 | using namespace openpower::vpd::constants; |
| 15 | using sdeventplus::ClockId; |
| 16 | using sdeventplus::Event; |
| 17 | using Timer = sdeventplus::utility::Timer<ClockId::Monotonic>; |
| 18 | using namespace std::chrono_literals; |
| 19 | |
| 20 | namespace openpower |
| 21 | { |
| 22 | namespace vpd |
| 23 | { |
| 24 | namespace manager |
| 25 | { |
| 26 | |
| 27 | bool GpioEventHandler::getPresencePinValue() |
| 28 | { |
| 29 | Byte gpioData = 1; |
| 30 | gpiod::line presenceLine = gpiod::find_line(presencePin); |
| 31 | if (!presenceLine) |
| 32 | { |
| 33 | cerr << "Error getPresencePinValue: couldn't find presence line:" |
| 34 | << presencePin << " on GPIO \n"; |
| 35 | // return previous state as we couldn't read current state |
| 36 | return prevPresPinValue; |
| 37 | } |
| 38 | |
| 39 | presenceLine.request( |
| 40 | {"Op-panel presence line", gpiod::line_request::DIRECTION_INPUT, 0}); |
| 41 | |
| 42 | gpioData = presenceLine.get_value(); |
| 43 | |
| 44 | return gpioData; |
| 45 | } |
| 46 | |
| 47 | void GpioMonitor::initGpioInfos(Event& event) |
| 48 | { |
| 49 | Byte outputValue = 0; |
| 50 | Byte presenceValue = 0; |
| 51 | string presencePinName{}, outputPinName{}; |
| 52 | string devNameAddr{}, driverType{}, busType{}, objectPath{}; |
| 53 | |
| 54 | for (const auto& eachFRU : jsonFile["frus"].items()) |
| 55 | { |
| 56 | for (const auto& eachInventory : eachFRU.value()) |
| 57 | { |
| 58 | objectPath = eachInventory["inventoryPath"]; |
| 59 | |
| 60 | if ((eachInventory.find("presence") != eachInventory.end()) && |
| 61 | (eachInventory.find("preAction") != eachInventory.end())) |
| 62 | { |
Alpana Kumari | 187bc27 | 2022-02-10 23:18:09 -0600 | [diff] [blame] | 63 | if (!eachInventory["presence"].value("pollingRequired", false)) |
| 64 | { |
| 65 | // Polling not required for this FRU , skip. |
| 66 | continue; |
| 67 | } |
| 68 | |
Alpana Kumari | b17dd3b | 2020-10-01 00:18:10 -0500 | [diff] [blame] | 69 | for (const auto& presStatus : eachInventory["presence"].items()) |
| 70 | { |
| 71 | if (presStatus.key() == "pin") |
| 72 | { |
| 73 | presencePinName = presStatus.value(); |
| 74 | } |
| 75 | else if (presStatus.key() == "value") |
| 76 | { |
| 77 | presenceValue = presStatus.value(); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | // Based on presence pin value, preAction pin will be set/reset |
| 82 | // This action will be taken before vpd collection. |
| 83 | for (const auto& preAction : eachInventory["preAction"].items()) |
| 84 | { |
| 85 | if (preAction.key() == "pin") |
| 86 | { |
| 87 | outputPinName = preAction.value(); |
| 88 | } |
| 89 | else if (preAction.key() == "value") |
| 90 | { |
| 91 | outputValue = preAction.value(); |
| 92 | } |
| 93 | } |
| 94 | |
Alpana Kumari | 64b9f5f | 2022-02-19 13:25:58 -0600 | [diff] [blame] | 95 | if ((eachInventory.find("devAddress") != eachInventory.end()) && |
| 96 | (eachInventory.find("driverType") != eachInventory.end()) && |
| 97 | (eachInventory.find("busType") != eachInventory.end())) |
| 98 | { |
| 99 | devNameAddr = eachInventory["devAddress"]; |
| 100 | driverType = eachInventory["driverType"]; |
| 101 | busType = eachInventory["busType"]; |
Alpana Kumari | b17dd3b | 2020-10-01 00:18:10 -0500 | [diff] [blame] | 102 | |
Alpana Kumari | 64b9f5f | 2022-02-19 13:25:58 -0600 | [diff] [blame] | 103 | // Init all Gpio info variables |
| 104 | std::shared_ptr<GpioEventHandler> gpioObj = |
| 105 | make_shared<GpioEventHandler>( |
| 106 | presencePinName, presenceValue, outputPinName, |
| 107 | outputValue, devNameAddr, driverType, busType, |
| 108 | objectPath, event); |
Alpana Kumari | b17dd3b | 2020-10-01 00:18:10 -0500 | [diff] [blame] | 109 | |
Alpana Kumari | 64b9f5f | 2022-02-19 13:25:58 -0600 | [diff] [blame] | 110 | gpioObjects.push_back(gpioObj); |
| 111 | } |
Alpana Kumari | b17dd3b | 2020-10-01 00:18:10 -0500 | [diff] [blame] | 112 | } |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | void GpioEventHandler::toggleGpio() |
| 118 | { |
| 119 | bool presPinVal = getPresencePinValue(); |
| 120 | bool isPresent = false; |
| 121 | |
| 122 | // preserve the new value |
| 123 | prevPresPinValue = presPinVal; |
| 124 | |
| 125 | if (presPinVal == presenceValue) |
| 126 | { |
| 127 | isPresent = true; |
| 128 | } |
| 129 | |
| 130 | // if FRU went away set the present property to false |
| 131 | if (!isPresent) |
| 132 | { |
| 133 | inventory::ObjectMap objects; |
| 134 | inventory::InterfaceMap interfaces; |
| 135 | inventory::PropertyMap presProp; |
| 136 | |
| 137 | presProp.emplace("Present", false); |
| 138 | interfaces.emplace("xyz.openbmc_project.Inventory.Item", presProp); |
| 139 | objects.emplace(objectPath, move(interfaces)); |
| 140 | |
| 141 | common::utility::callPIM(move(objects)); |
| 142 | } |
| 143 | |
| 144 | gpiod::line outputLine = gpiod::find_line(outputPin); |
| 145 | if (!outputLine) |
| 146 | { |
| 147 | cerr << "Error: toggleGpio: couldn't find output line:" << outputPin |
| 148 | << ". Skipping update\n"; |
| 149 | |
| 150 | return; |
| 151 | } |
| 152 | |
| 153 | outputLine.request({"FRU presence: update the output GPIO pin", |
| 154 | gpiod::line_request::DIRECTION_OUTPUT, 0}, |
| 155 | isPresent ? outputValue : (!outputValue)); |
| 156 | |
| 157 | string cmnd = createBindUnbindDriverCmnd(devNameAddr, busType, driverType, |
| 158 | isPresent ? "bind" : "unbind"); |
| 159 | |
| 160 | cout << cmnd << endl; |
| 161 | executeCmd(cmnd); |
| 162 | } |
| 163 | |
| 164 | void GpioEventHandler::doEventAndTimerSetup(sdeventplus::Event& event) |
| 165 | { |
| 166 | prevPresPinValue = getPresencePinValue(); |
| 167 | |
| 168 | static vector<shared_ptr<Timer>> timers; |
| 169 | shared_ptr<Timer> timer = make_shared<Timer>( |
| 170 | event, |
| 171 | [this](Timer&) { |
| 172 | if (hasEventOccurred()) |
| 173 | { |
| 174 | toggleGpio(); |
| 175 | } |
| 176 | }, |
| 177 | std::chrono::seconds{5s}); |
| 178 | |
| 179 | timers.push_back(timer); |
| 180 | } |
| 181 | |
| 182 | } // namespace manager |
| 183 | } // namespace vpd |
| 184 | } // namespace openpower |