blob: 9ea86110072cf412f9a3ebb39f50de7c87f9eb4b [file] [log] [blame]
#pragma once
#include "libpldm/base.h"
#include "libpldm/platform.h"
#include "common/types.hpp"
#include "common/utils.hpp"
#include "libpldmresponder/event_parser.hpp"
#include "libpldmresponder/pdr_utils.hpp"
#include "pldmd/dbus_impl_requester.hpp"
#include "requester/handler.hpp"
#include <sdeventplus/event.hpp>
#include <sdeventplus/source/event.hpp>
#include <deque>
#include <map>
#include <memory>
#include <vector>
namespace pldm
{
using EntityType = uint16_t;
// vector which would hold the PDR record handle data returned by
// pldmPDRRepositoryChgEvent event data
using ChangeEntry = uint32_t;
using PDRRecordHandles = std::deque<ChangeEntry>;
/** @struct SensorEntry
*
* SensorEntry is a unique key which maps a sensorEventType request in the
* PlatformEventMessage command to a host sensor PDR. This struct is a key
* in a std::map, so implemented operator==and operator<.
*/
struct SensorEntry
{
pdr::TerminusID terminusID;
pdr::SensorID sensorID;
bool operator==(const SensorEntry& e) const
{
return ((terminusID == e.terminusID) && (sensorID == e.sensorID));
}
bool operator<(const SensorEntry& e) const
{
return ((terminusID < e.terminusID) ||
((terminusID == e.terminusID) && (sensorID < e.sensorID)));
}
};
using HostStateSensorMap = std::map<SensorEntry, pdr::SensorInfo>;
using PDRList = std::vector<std::vector<uint8_t>>;
/** @class HostPDRHandler
* @brief This class can fetch and process PDRs from host firmware
* @details Provides an API to fetch PDRs from the host firmware. Upon
* receiving the PDRs, they are stored into the BMC's primary PDR repo.
* Adjustments are made to entity association PDRs received from the host,
* because they need to be assimilated into the BMC's entity association
* tree. A PLDM event containing the record handles of the updated entity
* association PDRs is sent to the host.
*/
class HostPDRHandler
{
public:
HostPDRHandler() = delete;
HostPDRHandler(const HostPDRHandler&) = delete;
HostPDRHandler(HostPDRHandler&&) = delete;
HostPDRHandler& operator=(const HostPDRHandler&) = delete;
HostPDRHandler& operator=(HostPDRHandler&&) = delete;
~HostPDRHandler() = default;
using TerminusInfo =
std::tuple<pdr::TerminusID, pdr::EID, pdr::TerminusValidity>;
using TLPDRMap = std::map<pdr::TerminusHandle, TerminusInfo>;
/** @brief Constructor
* @param[in] mctp_fd - fd of MCTP communications socket
* @param[in] mctp_eid - MCTP EID of host firmware
* @param[in] event - reference of main event loop of pldmd
* @param[in] repo - pointer to BMC's primary PDR repo
* @param[in] eventsJsonDir - directory path which has the config JSONs
* @param[in] entityTree - Pointer to BMC and Host entity association tree
* @param[in] bmcEntityTree - pointer to BMC's entity association tree
* @param[in] requester - reference to Requester object
* @param[in] handler - PLDM request handler
*/
explicit HostPDRHandler(
int mctp_fd, uint8_t mctp_eid, sdeventplus::Event& event,
pldm_pdr* repo, const std::string& eventsJsonsDir,
pldm_entity_association_tree* entityTree,
pldm_entity_association_tree* bmcEntityTree,
pldm::dbus_api::Requester& requester,
pldm::requester::Handler<pldm::requester::Request>* handler);
/** @brief fetch PDRs from host firmware. See @class.
* @param[in] recordHandles - list of record handles pointing to host's
* PDRs that need to be fetched.
*/
void fetchPDR(PDRRecordHandles&& recordHandles);
/** @brief Send a PLDM event to host firmware containing a list of record
* handles of PDRs that the host firmware has to fetch.
* @param[in] pdrTypes - list of PDR types that need to be looked up in the
* BMC repo
* @param[in] eventDataFormat - format for PDRRepositoryChgEvent in DSP0248
*/
void sendPDRRepositoryChgEvent(std::vector<uint8_t>&& pdrTypes,
uint8_t eventDataFormat);
/** @brief Lookup host sensor info corresponding to requested SensorEntry
*
* @param[in] entry - TerminusID and SensorID
*
* @return SensorInfo corresponding to the input paramter SensorEntry
* throw std::out_of_range exception if not found
*/
const pdr::SensorInfo& lookupSensorInfo(const SensorEntry& entry) const
{
return sensorMap.at(entry);
}
/** @brief Handles state sensor event
*
* @param[in] entry - state sensor entry
* @param[in] state - event state
*
* @return PLDM completion code
*/
int handleStateSensorEvent(
const pldm::responder::events::StateSensorEntry& entry,
pdr::EventState state);
/** @brief Parse state sensor PDRs and populate the sensorMap lookup data
* structure
*
* @param[in] stateSensorPDRs - host state sensor PDRs
*
*/
void parseStateSensorPDRs(const PDRList& stateSensorPDRs);
/** @brief this function sends a GetPDR request to Host firmware.
* And processes the PDRs based on type
*
* @param[in] - nextRecordHandle - the next record handle to ask for
*/
void getHostPDR(uint32_t nextRecordHandle = 0);
/** @brief set the Host firmware condition when pldmd starts
*/
void setHostFirmwareCondition();
/** @brief set HostSensorStates when pldmd starts or restarts
* and updates the D-Bus property
* @param[in] stateSensorPDRs - host state sensor PDRs
*/
void setHostSensorState(const PDRList& stateSensorPDRs);
/** @brief check whether Host is running when pldmd starts
*/
bool isHostUp();
/** @brief map that captures various terminus information **/
TLPDRMap tlPDRInfo;
private:
/** @brief deferred function to fetch PDR from Host, scheduled to work on
* the event loop. The PDR exchg with the host is async.
* @param[in] source - sdeventplus event source
*/
void _fetchPDR(sdeventplus::source::EventBase& source);
/** @brief Merge host firmware's entity association PDRs into BMC's
* @details A merge operation involves adding a pldm_entity under the
* appropriate parent, and updating container ids.
* @param[in] pdr - entity association pdr
*/
void mergeEntityAssociations(const std::vector<uint8_t>& pdr);
/** @brief Find parent of input entity type, from the entity association
* tree
* @param[in] type - PLDM entity type
* @param[out] parent - PLDM entity information of parent
* @return bool - true if parent found, false otherwise
*/
bool getParent(EntityType type, pldm_entity& parent);
/** @brief process the Host's PDR and add to BMC's PDR repo
* @param[in] eid - MCTP id of Host
* @param[in] response - response from Host for GetPDR
* @param[in] respMsgLen - response message length
*/
void processHostPDRs(mctp_eid_t eid, const pldm_msg* response,
size_t respMsgLen);
/** @brief send PDR Repo change after merging Host's PDR to BMC PDR repo
* @param[in] source - sdeventplus event source
*/
void _processPDRRepoChgEvent(sdeventplus::source::EventBase& source);
/** @brief fetch the next PDR based on the record handle sent by Host
* @param[in] nextRecordHandle - next record handle
* @param[in] source - sdeventplus event source
*/
void _processFetchPDREvent(uint32_t nextRecordHandle,
sdeventplus::source::EventBase& source);
/** @brief fd of MCTP communications socket */
int mctp_fd;
/** @brief MCTP EID of host firmware */
uint8_t mctp_eid;
/** @brief reference of main event loop of pldmd, primarily used to schedule
* work.
*/
sdeventplus::Event& event;
/** @brief pointer to BMC's primary PDR repo, host PDRs are added here */
pldm_pdr* repo;
pldm::responder::events::StateSensorHandler stateSensorHandler;
/** @brief Pointer to BMC's and Host's entity association tree */
pldm_entity_association_tree* entityTree;
/** @brief Pointer to BMC's entity association tree */
pldm_entity_association_tree* bmcEntityTree;
/** @brief reference to Requester object, primarily used to access API to
* obtain PLDM instance id.
*/
pldm::dbus_api::Requester& requester;
/** @brief PLDM request handler */
pldm::requester::Handler<pldm::requester::Request>* handler;
/** @brief sdeventplus event source */
std::unique_ptr<sdeventplus::source::Defer> pdrFetchEvent;
std::unique_ptr<sdeventplus::source::Defer> deferredFetchPDREvent;
std::unique_ptr<sdeventplus::source::Defer> deferredPDRRepoChgEvent;
/** @brief list of PDR record handles pointing to host's PDRs */
PDRRecordHandles pdrRecordHandles;
/** @brief maps an entity type to parent pldm_entity from the BMC's entity
* association tree
*/
std::map<EntityType, pldm_entity> parents;
/** @brief D-Bus property changed signal match */
std::unique_ptr<sdbusplus::bus::match::match> hostOffMatch;
/** @brief sensorMap is a lookup data structure that is build from the
* hostPDR that speeds up the lookup of <TerminusID, SensorID> in
* PlatformEventMessage command request.
*/
HostStateSensorMap sensorMap;
/** @brief whether response received from Host */
bool responseReceived;
};
} // namespace pldm