diff --git a/host-cmd-manager.cpp b/host-cmd-manager.cpp
new file mode 100644
index 0000000..5b75b55
--- /dev/null
+++ b/host-cmd-manager.cpp
@@ -0,0 +1,147 @@
+#include <chrono>
+#include <phosphor-logging/log.hpp>
+#include <phosphor-logging/elog-errors.hpp>
+#include <xyz/openbmc_project/Common/error.hpp>
+#include <systemintfcmds.h>
+#include <utils.hpp>
+#include <config.h>
+#include <host-cmd-manager.hpp>
+
+namespace phosphor
+{
+namespace host
+{
+namespace command
+{
+
+constexpr auto MAPPER_BUSNAME = "xyz.openbmc_project.ObjectMapper";
+constexpr auto MAPPER_PATH = "/xyz/openbmc_project/object_mapper";
+constexpr auto MAPPER_INTERFACE = "xyz.openbmc_project.ObjectMapper";
+
+// For throwing exceptions
+using namespace phosphor::logging;
+using InternalFailure = sdbusplus::xyz::openbmc_project::Common::
+                            Error::InternalFailure;
+
+// Called as part of READ_MSG_DATA command
+IpmiCmdData Manager::getNextCommand()
+{
+    // Stop the timer. Don't have to Err failure doing so.
+    auto r = timer.setTimer(SD_EVENT_OFF);
+    if (r < 0)
+    {
+        log<level::ERR>("Failure to STOP the timer",
+                entry("ERROR=%s", strerror(-r)));
+    }
+
+    if(this->workQueue.empty())
+    {
+        // Just return a heartbeat in this case.  A spurious SMS_ATN was
+        // asserted for the host (probably from a previous boot).
+        log<level::INFO>("Control Host work queue is empty!");
+
+        return std::make_pair(CMD_HEARTBEAT, 0x00);
+    }
+
+    // Pop the processed entry off the queue
+    auto command = this->workQueue.front();
+    this->workQueue.pop();
+
+    // IPMI command is the first element in pair
+    auto ipmiCmdData = std::get<0>(command);
+
+    // Now, call the user registered functions so that
+    // implementation specific CommandComplete signals
+    // can be sent. `true` indicating Success.
+    std::get<CallBack>(command)(ipmiCmdData, true);
+
+    // Check for another entry in the queue and kick it off
+    this->checkQueueAndAlertHost();
+
+    // Tuple of command and data
+    return ipmiCmdData;
+}
+
+// Called when initial timer goes off post sending SMS_ATN
+void Manager::hostTimeout()
+{
+    log<level::ERR>("Host control timeout hit!");
+
+    // Dequeue all entries and send fail signal
+    while(!this->workQueue.empty())
+    {
+        auto command = this->workQueue.front();
+        this->workQueue.pop();
+
+        // IPMI command is the first element in pair
+        auto ipmiCmdData = std::get<0>(command);
+
+        // Call the implementation specific Command Failure.
+        // `false` indicating Failure
+        std::get<CallBack>(command)(ipmiCmdData, false);
+    }
+}
+
+// Called for alerting the host
+void Manager::checkQueueAndAlertHost()
+{
+    if (this->workQueue.size() >= 1)
+    {
+        log<level::INFO>("Asserting SMS Attention");
+
+        std::string IPMI_PATH("/org/openbmc/HostIpmi/1");
+        std::string IPMI_INTERFACE("org.openbmc.HostIpmi");
+
+        auto host = ::ipmi::getService(this->bus,IPMI_INTERFACE,IPMI_PATH);
+
+        // Start the timer for this transaction
+        auto time = std::chrono::duration_cast<std::chrono::microseconds>(
+                        std::chrono::seconds(IPMI_SMS_ATN_ACK_TIMEOUT_SECS));
+
+        auto r = timer.startTimer(time);
+        if (r < 0)
+        {
+            log<level::ERR>("Error starting timer for control host");
+            return;
+        }
+
+        auto method = this->bus.new_method_call(host.c_str(),
+                                                IPMI_PATH.c_str(),
+                                                IPMI_INTERFACE.c_str(),
+                                                "setAttention");
+        auto reply = this->bus.call(method);
+
+        if (reply.is_method_error())
+        {
+            log<level::ERR>("Error in setting SMS attention");
+            elog<InternalFailure>();
+        }
+        log<level::INFO>("SMS Attention asserted");
+    }
+}
+
+// Called by specific implementations that provide commands
+void Manager::execute(CommandHandler command)
+{
+    log<level::INFO>("Pushing cmd on to queue",
+            entry("COMMAND=%d", std::get<0>(command).first));
+
+    this->workQueue.emplace(command);
+
+    // Alert host if this is only command in queue otherwise host will
+    // be notified of next message after processing the current one
+    if (this->workQueue.size() == 1)
+    {
+        this->checkQueueAndAlertHost();
+    }
+    else
+    {
+        log<level::INFO>("Command in process, no attention");
+    }
+
+    return;
+}
+
+} // namespace command
+} // namespace host
+} // namepsace phosphor