app/watchdog.cpp - openbmc/phosphor-host-ipmid - Gitiles

 #include "watchdog.hpp"

 #include "watchdog_service.hpp"

 #include <endian.h>

 #include <bitset>
 #include <cstdint>
 #include <ipmid/api.hpp>
 #include <phosphor-logging/elog-errors.hpp>
 #include <phosphor-logging/elog.hpp>
 #include <phosphor-logging/log.hpp>
 #include <string>
 #include <xyz/openbmc_project/Common/error.hpp>

 using phosphor::logging::commit;
 using phosphor::logging::level;
 using phosphor::logging::log;
 using sdbusplus::xyz::openbmc_project::Common::Error::InternalFailure;

 static bool lastCallSuccessful = false;

 void reportError()
 {
     // We don't want to fill the SEL with errors if the daemon dies and doesn't
     // come back but the watchdog keeps on ticking. Instead, we only report the
     // error if we haven't reported one since the last successful call
     if (!lastCallSuccessful)
     {
         return;
     }
     lastCallSuccessful = false;

     // TODO: This slow down the end of the IPMI transaction waiting
     // for the commit to finish. commit<>() can take at least 5 seconds
     // to complete. 5s is very slow for an IPMI command and ends up
     // congesting the IPMI channel needlessly, especially if the watchdog
     // is ticking fairly quickly and we have some transient issues.
     commit<InternalFailure>();
 }

 ipmi::RspType<> ipmiAppResetWatchdogTimer()
 {
     try
     {
         WatchdogService wd_service;

         // Notify the caller if we haven't initialized our timer yet
         // so it can configure actions and timeouts
         if (!wd_service.getInitialized())
         {
             lastCallSuccessful = true;

             constexpr uint8_t ccWatchdogNotInit = 0x80;
             return ipmi::response(ccWatchdogNotInit);
         }

         // The ipmi standard dictates we enable the watchdog during reset
         wd_service.resetTimeRemaining(true);
         lastCallSuccessful = true;
         return ipmi::responseSuccess();
     }
     catch (const InternalFailure& e)
     {
         reportError();
         return ipmi::responseUnspecifiedError();
     }
     catch (const std::exception& e)
     {
         const std::string e_str = std::string("wd_reset: ") + e.what();
         log<level::ERR>(e_str.c_str());
         return ipmi::responseUnspecifiedError();
     }
     catch (...)
     {
         log<level::ERR>("wd_reset: Unknown Error");
         return ipmi::responseUnspecifiedError();
     }
 }

 static constexpr uint8_t wd_dont_stop = 0x1 << 6;
 static constexpr uint8_t wd_timeout_action_mask = 0x3;

 static constexpr uint8_t wdTimerUseResTimer1 = 0x0;
 static constexpr uint8_t wdTimerUseResTimer2 = 0x6;
 static constexpr uint8_t wdTimerUseResTimer3 = 0x7;

 static constexpr uint8_t wdTimeoutActionMax = 3;
 static constexpr uint8_t wdTimeoutInterruptTimer = 0x04;

 enum class IpmiAction : uint8_t
 {
     None = 0x0,
     HardReset = 0x1,
     PowerOff = 0x2,
     PowerCycle = 0x3,
 };

 /** @brief Converts an IPMI Watchdog Action to DBUS defined action
  *  @param[in] ipmi_action The IPMI Watchdog Action
  *  @return The Watchdog Action that the ipmi_action maps to
  */
 WatchdogService::Action ipmiActionToWdAction(IpmiAction ipmi_action)
 {
     switch (ipmi_action)
     {
         case IpmiAction::None:
         {
             return WatchdogService::Action::None;
         }
         case IpmiAction::HardReset:
         {
             return WatchdogService::Action::HardReset;
         }
         case IpmiAction::PowerOff:
         {
             return WatchdogService::Action::PowerOff;
         }
         case IpmiAction::PowerCycle:
         {
             return WatchdogService::Action::PowerCycle;
         }
         default:
         {
             throw std::domain_error("IPMI Action is invalid");
         }
     }
 }

 enum class IpmiTimerUse : uint8_t
 {
     Reserved = 0x0,
     BIOSFRB2 = 0x1,
     BIOSPOST = 0x2,
     OSLoad = 0x3,
     SMSOS = 0x4,
     OEM = 0x5,
 };

 WatchdogService::TimerUse ipmiTimerUseToWdTimerUse(IpmiTimerUse ipmiTimerUse)
 {
     switch (ipmiTimerUse)
     {
         case IpmiTimerUse::Reserved:
         {
             return WatchdogService::TimerUse::Reserved;
         }
         case IpmiTimerUse::BIOSFRB2:
         {
             return WatchdogService::TimerUse::BIOSFRB2;
         }
         case IpmiTimerUse::BIOSPOST:
         {
             return WatchdogService::TimerUse::BIOSPOST;
         }
         case IpmiTimerUse::OSLoad:
         {
             return WatchdogService::TimerUse::OSLoad;
         }
         case IpmiTimerUse::SMSOS:
         {
             return WatchdogService::TimerUse::SMSOS;
         }
         case IpmiTimerUse::OEM:
         {
             return WatchdogService::TimerUse::OEM;
         }
         default:
         {
             return WatchdogService::TimerUse::Reserved;
         }
     }
 }

 static bool timerNotLogFlags = false;
 static std::bitset<8> timerUseExpirationFlags = 0;
 static uint3_t timerPreTimeoutInterrupt = 0;
 static constexpr uint8_t wdExpirationFlagReservedBit0 = 0x0;
 static constexpr uint8_t wdExpirationFlagReservedBit6 = 0x6;
 static constexpr uint8_t wdExpirationFlagReservedBit7 = 0x7;

 /**@brief The Set Watchdog Timer ipmi command.
  *
  * @param
  * - timerUse
  * - dontStopTimer
  * - dontLog
  * - timerAction
  * - pretimeout
  * - expireFlags
  * - initialCountdown
  *
  * @return completion code on success.
  **/
 ipmi::RspType<>
     ipmiSetWatchdogTimer(uint3_t timerUse, uint3_t reserved, bool dontStopTimer,
                          bool dontLog, uint3_t timeoutAction, uint1_t reserved1,
                          uint3_t preTimeoutInterrupt, uint1_t reserved2,
                          uint8_t preTimeoutInterval,
                          std::bitset<8> expFlagValue, uint16_t initialCountdown)
 {
     if ((timerUse == wdTimerUseResTimer1) ||
         (timerUse == wdTimerUseResTimer2) ||
         (timerUse == wdTimerUseResTimer3) ||
         (timeoutAction > wdTimeoutActionMax) ||
         (preTimeoutInterrupt == wdTimeoutInterruptTimer) ||
         (reserved | reserved1 | reserved2 |
          expFlagValue.test(wdExpirationFlagReservedBit0) |
          expFlagValue.test(wdExpirationFlagReservedBit6) |
          expFlagValue.test(wdExpirationFlagReservedBit7)))
     {
         return ipmi::responseInvalidFieldRequest();
     }

     if (preTimeoutInterval > (initialCountdown / 10))
     {
         return ipmi::responseInvalidFieldRequest();
     }

     timerNotLogFlags = dontLog;
     timerPreTimeoutInterrupt = preTimeoutInterrupt;

     try
     {
         WatchdogService wd_service;
         // Stop the timer if the don't stop bit is not set
         if (!(dontStopTimer))
         {
             wd_service.setEnabled(false);
         }

         // Set the action based on the request
         const auto ipmi_action = static_cast<IpmiAction>(
             static_cast<uint8_t>(timeoutAction) & wd_timeout_action_mask);
         wd_service.setExpireAction(ipmiActionToWdAction(ipmi_action));

         const auto ipmiTimerUse = types::enum_cast<IpmiTimerUse>(timerUse);
         wd_service.setTimerUse(ipmiTimerUseToWdTimerUse(ipmiTimerUse));

         wd_service.setExpiredTimerUse(WatchdogService::TimerUse::Reserved);

         timerUseExpirationFlags &= ~expFlagValue;

         // Set the new interval and the time remaining deci -> mill seconds
         const uint64_t interval = initialCountdown * 100;
         wd_service.setInterval(interval);
         wd_service.resetTimeRemaining(false);

         // Mark as initialized so that future resets behave correctly
         wd_service.setInitialized(true);

         lastCallSuccessful = true;
         return ipmi::responseSuccess();
     }
     catch (const std::domain_error&)
     {
         return ipmi::responseInvalidFieldRequest();
     }
     catch (const InternalFailure& e)
     {
         reportError();
         return ipmi::responseUnspecifiedError();
     }
     catch (const std::exception& e)
     {
         const std::string e_str = std::string("wd_set: ") + e.what();
         log<level::ERR>(e_str.c_str());
         return ipmi::responseUnspecifiedError();
     }
     catch (...)
     {
         log<level::ERR>("wd_set: Unknown Error");
         return ipmi::responseUnspecifiedError();
     }
 }

 /** @brief Converts a DBUS Watchdog Action to IPMI defined action
  *  @param[in] wd_action The DBUS Watchdog Action
  *  @return The IpmiAction that the wd_action maps to
  */
 IpmiAction wdActionToIpmiAction(WatchdogService::Action wd_action)
 {
     switch (wd_action)
     {
         case WatchdogService::Action::None:
         {
             return IpmiAction::None;
         }
         case WatchdogService::Action::HardReset:
         {
             return IpmiAction::HardReset;
         }
         case WatchdogService::Action::PowerOff:
         {
             return IpmiAction::PowerOff;
         }
         case WatchdogService::Action::PowerCycle:
         {
             return IpmiAction::PowerCycle;
         }
         default:
         {
             // We have no method via IPMI to signal that the action is unknown
             // or unmappable in some way.
             // Just ignore the error and return NONE so the host can reconcile.
             return IpmiAction::None;
         }
     }
 }

 IpmiTimerUse wdTimerUseToIpmiTimerUse(WatchdogService::TimerUse wdTimerUse)
 {
     switch (wdTimerUse)
     {
         case WatchdogService::TimerUse::Reserved:
         {
             return IpmiTimerUse::Reserved;
         }
         case WatchdogService::TimerUse::BIOSFRB2:
         {
             return IpmiTimerUse::BIOSFRB2;
         }
         case WatchdogService::TimerUse::BIOSPOST:
         {
             return IpmiTimerUse::BIOSPOST;
         }
         case WatchdogService::TimerUse::OSLoad:
         {
             return IpmiTimerUse::OSLoad;
         }

         case WatchdogService::TimerUse::SMSOS:
         {
             return IpmiTimerUse::SMSOS;
         }
         case WatchdogService::TimerUse::OEM:
         {
             return IpmiTimerUse::OEM;
         }
         default:
         {
             return IpmiTimerUse::Reserved;
         }
     }
 }

 static constexpr uint8_t wd_running = 0x1 << 6;

 /**@brief The getWatchdogTimer ipmi command.
  *
  * @return Completion code plus timer details.
  * - timerUse
  * - timerAction
  * - pretimeout
  * - expireFlags
  * - initialCountdown
  * - presentCountdown
  **/
 ipmi::RspType<uint3_t, // timerUse - timer use
               uint3_t, // timerUse - reserved
               bool,    // timerUse - timer is started
               bool,    // timerUse - don't log

               uint3_t, // timerAction - timeout action
               uint1_t, // timerAction - reserved
               uint3_t, // timerAction - pre-timeout interrupt
               uint1_t, // timerAction - reserved

               uint8_t,        // pretimeout
               std::bitset<8>, // expireFlags
               uint16_t,       // initial Countdown - Little Endian (deciseconds)
               uint16_t        // present Countdown - Little Endian (deciseconds)
               >
     ipmiGetWatchdogTimer()
 {
     uint16_t presentCountdown = 0;
     uint8_t pretimeout = 0;

     try
     {
         WatchdogService wd_service;
         WatchdogService::Properties wd_prop = wd_service.getProperties();

         // Build and return the response
         // Interval and timeRemaining need converted from milli -> deci seconds
         uint16_t initialCountdown = htole16(wd_prop.interval / 100);

         if (wd_prop.expiredTimerUse != WatchdogService::TimerUse::Reserved)
         {
             timerUseExpirationFlags.set(static_cast<uint8_t>(
                 wdTimerUseToIpmiTimerUse(wd_prop.expiredTimerUse)));
         }

         if (wd_prop.enabled)
         {
             presentCountdown = htole16(wd_prop.timeRemaining / 100);
         }
         else
         {
             if (wd_prop.expiredTimerUse == WatchdogService::TimerUse::Reserved)
             {
                 presentCountdown = initialCountdown;
             }
             else
             {
                 presentCountdown = 0;
                 // Automatically clear it whenever a timer expiration occurs.
                 timerNotLogFlags = false;
             }
         }

         // TODO: Do something about having pretimeout support
         pretimeout = 0;

         lastCallSuccessful = true;
         return ipmi::responseSuccess(
             types::enum_cast<uint3_t>(
                 wdTimerUseToIpmiTimerUse(wd_prop.timerUse)),
             0, wd_prop.enabled, timerNotLogFlags,
             types::enum_cast<uint3_t>(
                 wdActionToIpmiAction(wd_prop.expireAction)),
             0, timerPreTimeoutInterrupt, 0, pretimeout, timerUseExpirationFlags,
             initialCountdown, presentCountdown);
     }
     catch (const InternalFailure& e)
     {
         reportError();
         return ipmi::responseUnspecifiedError();
     }
     catch (const std::exception& e)
     {
         const std::string e_str = std::string("wd_get: ") + e.what();
         log<level::ERR>(e_str.c_str());
         return ipmi::responseUnspecifiedError();
     }
     catch (...)
     {
         log<level::ERR>("wd_get: Unknown Error");
         return ipmi::responseUnspecifiedError();
     }
 }
	#include "watchdog.hpp"

	#include "watchdog_service.hpp"

	#include <endian.h>

	#include <bitset>
	#include <cstdint>
	#include <ipmid/api.hpp>
	#include <phosphor-logging/elog-errors.hpp>
	#include <phosphor-logging/elog.hpp>
	#include <phosphor-logging/log.hpp>
	#include <string>
	#include <xyz/openbmc_project/Common/error.hpp>

	using phosphor::logging::commit;
	using phosphor::logging::level;
	using phosphor::logging::log;
	using sdbusplus::xyz::openbmc_project::Common::Error::InternalFailure;

	static bool lastCallSuccessful = false;

	void reportError()
	{
	// We don't want to fill the SEL with errors if the daemon dies and doesn't
	// come back but the watchdog keeps on ticking. Instead, we only report the
	// error if we haven't reported one since the last successful call
	if (!lastCallSuccessful)
	{
	return;
	}
	lastCallSuccessful = false;

	// TODO: This slow down the end of the IPMI transaction waiting
	// for the commit to finish. commit<>() can take at least 5 seconds
	// to complete. 5s is very slow for an IPMI command and ends up
	// congesting the IPMI channel needlessly, especially if the watchdog
	// is ticking fairly quickly and we have some transient issues.
	commit<InternalFailure>();
	}

	ipmi::RspType<> ipmiAppResetWatchdogTimer()
	{
	try
	{
	WatchdogService wd_service;

	// Notify the caller if we haven't initialized our timer yet
	// so it can configure actions and timeouts
	if (!wd_service.getInitialized())
	{
	lastCallSuccessful = true;

	constexpr uint8_t ccWatchdogNotInit = 0x80;
	return ipmi::response(ccWatchdogNotInit);
	}

	// The ipmi standard dictates we enable the watchdog during reset
	wd_service.resetTimeRemaining(true);
	lastCallSuccessful = true;
	return ipmi::responseSuccess();
	}
	catch (const InternalFailure& e)
	{
	reportError();
	return ipmi::responseUnspecifiedError();
	}
	catch (const std::exception& e)
	{
	const std::string e_str = std::string("wd_reset: ") + e.what();
	log<level::ERR>(e_str.c_str());
	return ipmi::responseUnspecifiedError();
	}
	catch (...)
	{
	log<level::ERR>("wd_reset: Unknown Error");
	return ipmi::responseUnspecifiedError();
	}
	}

	static constexpr uint8_t wd_dont_stop = 0x1 << 6;
	static constexpr uint8_t wd_timeout_action_mask = 0x3;

	static constexpr uint8_t wdTimerUseResTimer1 = 0x0;
	static constexpr uint8_t wdTimerUseResTimer2 = 0x6;
	static constexpr uint8_t wdTimerUseResTimer3 = 0x7;

	static constexpr uint8_t wdTimeoutActionMax = 3;
	static constexpr uint8_t wdTimeoutInterruptTimer = 0x04;

	enum class IpmiAction : uint8_t
	{
	None = 0x0,
	HardReset = 0x1,
	PowerOff = 0x2,
	PowerCycle = 0x3,
	};

	/** @brief Converts an IPMI Watchdog Action to DBUS defined action
	* @param[in] ipmi_action The IPMI Watchdog Action
	* @return The Watchdog Action that the ipmi_action maps to
	*/
	WatchdogService::Action ipmiActionToWdAction(IpmiAction ipmi_action)
	{
	switch (ipmi_action)
	{
	case IpmiAction::None:
	{
	return WatchdogService::Action::None;
	}
	case IpmiAction::HardReset:
	{
	return WatchdogService::Action::HardReset;
	}
	case IpmiAction::PowerOff:
	{
	return WatchdogService::Action::PowerOff;
	}
	case IpmiAction::PowerCycle:
	{
	return WatchdogService::Action::PowerCycle;
	}
	default:
	{
	throw std::domain_error("IPMI Action is invalid");
	}
	}
	}

	enum class IpmiTimerUse : uint8_t
	{
	Reserved = 0x0,
	BIOSFRB2 = 0x1,
	BIOSPOST = 0x2,
	OSLoad = 0x3,
	SMSOS = 0x4,
	OEM = 0x5,
	};

	WatchdogService::TimerUse ipmiTimerUseToWdTimerUse(IpmiTimerUse ipmiTimerUse)
	{
	switch (ipmiTimerUse)
	{
	case IpmiTimerUse::Reserved:
	{
	return WatchdogService::TimerUse::Reserved;
	}
	case IpmiTimerUse::BIOSFRB2:
	{
	return WatchdogService::TimerUse::BIOSFRB2;
	}
	case IpmiTimerUse::BIOSPOST:
	{
	return WatchdogService::TimerUse::BIOSPOST;
	}
	case IpmiTimerUse::OSLoad:
	{
	return WatchdogService::TimerUse::OSLoad;
	}
	case IpmiTimerUse::SMSOS:
	{
	return WatchdogService::TimerUse::SMSOS;
	}
	case IpmiTimerUse::OEM:
	{
	return WatchdogService::TimerUse::OEM;
	}
	default:
	{
	return WatchdogService::TimerUse::Reserved;
	}
	}
	}

	static bool timerNotLogFlags = false;
	static std::bitset<8> timerUseExpirationFlags = 0;
	static uint3_t timerPreTimeoutInterrupt = 0;
	static constexpr uint8_t wdExpirationFlagReservedBit0 = 0x0;
	static constexpr uint8_t wdExpirationFlagReservedBit6 = 0x6;
	static constexpr uint8_t wdExpirationFlagReservedBit7 = 0x7;

	/**@brief The Set Watchdog Timer ipmi command.
	*
	* @param
	* - timerUse
	* - dontStopTimer
	* - dontLog
	* - timerAction
	* - pretimeout
	* - expireFlags
	* - initialCountdown
	*
	* @return completion code on success.
	**/
	ipmi::RspType<>
	ipmiSetWatchdogTimer(uint3_t timerUse, uint3_t reserved, bool dontStopTimer,
	bool dontLog, uint3_t timeoutAction, uint1_t reserved1,
	uint3_t preTimeoutInterrupt, uint1_t reserved2,
	uint8_t preTimeoutInterval,
	std::bitset<8> expFlagValue, uint16_t initialCountdown)
	{
	if ((timerUse == wdTimerUseResTimer1) \|\|
	(timerUse == wdTimerUseResTimer2) \|\|
	(timerUse == wdTimerUseResTimer3) \|\|
	(timeoutAction > wdTimeoutActionMax) \|\|
	(preTimeoutInterrupt == wdTimeoutInterruptTimer) \|\|
	(reserved \| reserved1 \| reserved2 \|
	expFlagValue.test(wdExpirationFlagReservedBit0) \|
	expFlagValue.test(wdExpirationFlagReservedBit6) \|
	expFlagValue.test(wdExpirationFlagReservedBit7)))
	{
	return ipmi::responseInvalidFieldRequest();
	}

	if (preTimeoutInterval > (initialCountdown / 10))
	{
	return ipmi::responseInvalidFieldRequest();
	}

	timerNotLogFlags = dontLog;
	timerPreTimeoutInterrupt = preTimeoutInterrupt;

	try
	{
	WatchdogService wd_service;
	// Stop the timer if the don't stop bit is not set
	if (!(dontStopTimer))
	{
	wd_service.setEnabled(false);
	}

	// Set the action based on the request
	const auto ipmi_action = static_cast<IpmiAction>(
	static_cast<uint8_t>(timeoutAction) & wd_timeout_action_mask);
	wd_service.setExpireAction(ipmiActionToWdAction(ipmi_action));

	const auto ipmiTimerUse = types::enum_cast<IpmiTimerUse>(timerUse);
	wd_service.setTimerUse(ipmiTimerUseToWdTimerUse(ipmiTimerUse));

	wd_service.setExpiredTimerUse(WatchdogService::TimerUse::Reserved);

	timerUseExpirationFlags &= ~expFlagValue;

	// Set the new interval and the time remaining deci -> mill seconds
	const uint64_t interval = initialCountdown * 100;
	wd_service.setInterval(interval);
	wd_service.resetTimeRemaining(false);

	// Mark as initialized so that future resets behave correctly
	wd_service.setInitialized(true);

	lastCallSuccessful = true;
	return ipmi::responseSuccess();
	}
	catch (const std::domain_error&)
	{
	return ipmi::responseInvalidFieldRequest();
	}
	catch (const InternalFailure& e)
	{
	reportError();
	return ipmi::responseUnspecifiedError();
	}
	catch (const std::exception& e)
	{
	const std::string e_str = std::string("wd_set: ") + e.what();
	log<level::ERR>(e_str.c_str());
	return ipmi::responseUnspecifiedError();
	}
	catch (...)
	{
	log<level::ERR>("wd_set: Unknown Error");
	return ipmi::responseUnspecifiedError();
	}
	}

	/** @brief Converts a DBUS Watchdog Action to IPMI defined action
	* @param[in] wd_action The DBUS Watchdog Action
	* @return The IpmiAction that the wd_action maps to
	*/
	IpmiAction wdActionToIpmiAction(WatchdogService::Action wd_action)
	{
	switch (wd_action)
	{
	case WatchdogService::Action::None:
	{
	return IpmiAction::None;
	}
	case WatchdogService::Action::HardReset:
	{
	return IpmiAction::HardReset;
	}
	case WatchdogService::Action::PowerOff:
	{
	return IpmiAction::PowerOff;
	}
	case WatchdogService::Action::PowerCycle:
	{
	return IpmiAction::PowerCycle;
	}
	default:
	{
	// We have no method via IPMI to signal that the action is unknown
	// or unmappable in some way.
	// Just ignore the error and return NONE so the host can reconcile.
	return IpmiAction::None;
	}
	}
	}

	IpmiTimerUse wdTimerUseToIpmiTimerUse(WatchdogService::TimerUse wdTimerUse)
	{
	switch (wdTimerUse)
	{
	case WatchdogService::TimerUse::Reserved:
	{
	return IpmiTimerUse::Reserved;
	}
	case WatchdogService::TimerUse::BIOSFRB2:
	{
	return IpmiTimerUse::BIOSFRB2;
	}
	case WatchdogService::TimerUse::BIOSPOST:
	{
	return IpmiTimerUse::BIOSPOST;
	}
	case WatchdogService::TimerUse::OSLoad:
	{
	return IpmiTimerUse::OSLoad;
	}

	case WatchdogService::TimerUse::SMSOS:
	{
	return IpmiTimerUse::SMSOS;
	}
	case WatchdogService::TimerUse::OEM:
	{
	return IpmiTimerUse::OEM;
	}
	default:
	{
	return IpmiTimerUse::Reserved;
	}
	}
	}

	static constexpr uint8_t wd_running = 0x1 << 6;

	/**@brief The getWatchdogTimer ipmi command.
	*
	* @return Completion code plus timer details.
	* - timerUse
	* - timerAction
	* - pretimeout
	* - expireFlags
	* - initialCountdown
	* - presentCountdown
	**/
	ipmi::RspType<uint3_t, // timerUse - timer use
	uint3_t, // timerUse - reserved
	bool, // timerUse - timer is started
	bool, // timerUse - don't log

	uint3_t, // timerAction - timeout action
	uint1_t, // timerAction - reserved
	uint3_t, // timerAction - pre-timeout interrupt
	uint1_t, // timerAction - reserved

	uint8_t, // pretimeout
	std::bitset<8>, // expireFlags
	uint16_t, // initial Countdown - Little Endian (deciseconds)
	uint16_t // present Countdown - Little Endian (deciseconds)
	>
	ipmiGetWatchdogTimer()
	{
	uint16_t presentCountdown = 0;
	uint8_t pretimeout = 0;

	try
	{
	WatchdogService wd_service;
	WatchdogService::Properties wd_prop = wd_service.getProperties();

	// Build and return the response
	// Interval and timeRemaining need converted from milli -> deci seconds
	uint16_t initialCountdown = htole16(wd_prop.interval / 100);

	if (wd_prop.expiredTimerUse != WatchdogService::TimerUse::Reserved)
	{
	timerUseExpirationFlags.set(static_cast<uint8_t>(
	wdTimerUseToIpmiTimerUse(wd_prop.expiredTimerUse)));
	}

	if (wd_prop.enabled)
	{
	presentCountdown = htole16(wd_prop.timeRemaining / 100);
	}
	else
	{
	if (wd_prop.expiredTimerUse == WatchdogService::TimerUse::Reserved)
	{
	presentCountdown = initialCountdown;
	}
	else
	{
	presentCountdown = 0;
	// Automatically clear it whenever a timer expiration occurs.
	timerNotLogFlags = false;
	}
	}

	// TODO: Do something about having pretimeout support
	pretimeout = 0;

	lastCallSuccessful = true;
	return ipmi::responseSuccess(
	types::enum_cast<uint3_t>(
	wdTimerUseToIpmiTimerUse(wd_prop.timerUse)),
	0, wd_prop.enabled, timerNotLogFlags,
	types::enum_cast<uint3_t>(
	wdActionToIpmiAction(wd_prop.expireAction)),
	0, timerPreTimeoutInterrupt, 0, pretimeout, timerUseExpirationFlags,
	initialCountdown, presentCountdown);
	}
	catch (const InternalFailure& e)
	{
	reportError();
	return ipmi::responseUnspecifiedError();
	}
	catch (const std::exception& e)
	{
	const std::string e_str = std::string("wd_get: ") + e.what();
	log<level::ERR>(e_str.c_str());
	return ipmi::responseUnspecifiedError();
	}
	catch (...)
	{
	log<level::ERR>("wd_get: Unknown Error");
	return ipmi::responseUnspecifiedError();
	}
	}