pldm: Add support for OCC reset
BMC initiated OCC reset is translated to a SetStateEffecterStates
request for state effecter corresponding to the OCC instance.
Tested:
Invoked resetOCC path explicitly and verified that the
SetStateEffecterStates request message for OCCReset is accurate.
Signed-off-by: Tom Joseph <tomjoseph@in.ibm.com>
Change-Id: I4e0d211b51151d24bf0112819fc9f201698bfac0
diff --git a/pldm.cpp b/pldm.cpp
index c520340..22beea9 100644
--- a/pldm.cpp
+++ b/pldm.cpp
@@ -1,5 +1,7 @@
#include "pldm.hpp"
+#include "file.hpp"
+
#include <libpldm/entity.h>
#include <libpldm/platform.h>
#include <libpldm/state_set.h>
@@ -147,8 +149,203 @@
if (propVal == "xyz.openbmc_project.State.Host.HostState.Off")
{
sensorToOCCInstance.clear();
+ occInstanceToEffecter.clear();
}
}
}
+void Interface::fetchOCCEffecterInfo(
+ const PdrList& pdrs, OccInstanceToEffecter& instanceToEffecterMap,
+ CompositeEffecterCount& count, uint8_t& bootRestartPos)
+{
+ bool offsetFound = false;
+ auto pdr =
+ reinterpret_cast<const pldm_state_effecter_pdr*>(pdrs.front().data());
+ auto possibleStatesPtr = pdr->possible_states;
+ for (auto offset = 0; offset < pdr->composite_effecter_count; offset++)
+ {
+ auto possibleStates =
+ reinterpret_cast<const state_effecter_possible_states*>(
+ possibleStatesPtr);
+
+ if (possibleStates->state_set_id == PLDM_STATE_SET_BOOT_RESTART_CAUSE)
+ {
+ bootRestartPos = offset;
+ effecterCount = pdr->composite_effecter_count;
+ offsetFound = true;
+ break;
+ }
+ possibleStatesPtr += sizeof(possibleStates->state_set_id) +
+ sizeof(possibleStates->possible_states_size) +
+ possibleStates->possible_states_size;
+ }
+
+ if (!offsetFound)
+ {
+ return;
+ }
+
+ std::map<EntityInstance, EffecterID> entityInstMap{};
+ for (auto& pdr : pdrs)
+ {
+ auto pdrPtr =
+ reinterpret_cast<const pldm_state_effecter_pdr*>(pdr.data());
+ entityInstMap.emplace(
+ static_cast<EntityInstance>(pdrPtr->entity_instance),
+ static_cast<SensorID>(pdrPtr->effecter_id));
+ }
+
+ open_power::occ::instanceID position = start;
+ for (auto const& pair : entityInstMap)
+ {
+ occInstanceToEffecter.emplace(position, pair.second);
+ position++;
+ }
+}
+
+std::vector<uint8_t>
+ Interface::prepareSetEffecterReq(uint8_t instanceId, EffecterID effecterId,
+ CompositeEffecterCount effecterCount,
+ uint8_t bootRestartPos)
+{
+ std::vector<uint8_t> request(
+ sizeof(pldm_msg_hdr) + sizeof(effecterId) + sizeof(effecterCount) +
+ (effecterCount * sizeof(set_effecter_state_field)));
+ auto requestMsg = reinterpret_cast<pldm_msg*>(request.data());
+ std::vector<set_effecter_state_field> stateField;
+
+ for (uint8_t effecterPos = 0; effecterPos < effecterCount; effecterPos++)
+ {
+ if (effecterPos == bootRestartPos)
+ {
+ stateField.emplace_back(set_effecter_state_field{
+ PLDM_REQUEST_SET,
+ PLDM_STATE_SET_BOOT_RESTART_CAUSE_WARM_RESET});
+ }
+ else
+ {
+ stateField.emplace_back(
+ set_effecter_state_field{PLDM_NO_CHANGE, 0});
+ }
+ }
+ auto rc = encode_set_state_effecter_states_req(
+ instanceId, effecterId, effecterCount, stateField.data(), requestMsg);
+ if (rc != PLDM_SUCCESS)
+ {
+ log<level::ERR>("encode set effecter states request returned error ",
+ entry("RC=%d", rc));
+ request.clear();
+ }
+ return request;
+}
+
+void Interface::resetOCC(open_power::occ::instanceID occInstanceId)
+{
+ if (!isPDREffecterCacheValid())
+ {
+ PdrList pdrs{};
+
+ try
+ {
+ auto method = bus.new_method_call(
+ "xyz.openbmc_project.PLDM", "/xyz/openbmc_project/pldm",
+ "xyz.openbmc_project.PLDM.PDR", "FindStateEffecterPDR");
+ method.append(tid, (uint16_t)PLDM_ENTITY_PROC_MODULE,
+ (uint16_t)PLDM_STATE_SET_BOOT_RESTART_CAUSE);
+
+ auto responseMsg = bus.call(method);
+ responseMsg.read(pdrs);
+ }
+ catch (const SdBusError& e)
+ {
+ log<level::ERR>("pldm: Failed to fetch the OCC state effecter PDRs",
+ entry("ERROR=%s", e.what()));
+ }
+
+ if (!pdrs.size())
+ {
+ log<level::ERR>("pldm: OCC state effecter PDRs not present");
+ return;
+ }
+
+ fetchOCCEffecterInfo(pdrs, occInstanceToEffecter, effecterCount,
+ bootRestartPosition);
+ }
+
+ // Find the matching effecter for the OCC instance
+ auto effecterEntry = occInstanceToEffecter.find(occInstanceId);
+ if (effecterEntry == occInstanceToEffecter.end())
+ {
+ log<level::ERR>(
+ "pldm: Failed to find a matching effecter for OCC instance",
+ entry("OCC_INSTANCE_ID=%d", occInstanceId));
+
+ return;
+ }
+
+ uint8_t instanceId{};
+
+ try
+ {
+ auto method = bus.new_method_call(
+ "xyz.openbmc_project.PLDM", "/xyz/openbmc_project/pldm",
+ "xyz.openbmc_project.PLDM.Requester", "GetInstanceId");
+ method.append(mctpEid);
+ auto reply = bus.call(method);
+ reply.read(instanceId);
+ }
+ catch (const SdBusError& e)
+ {
+ log<level::ERR>("pldm: GetInstanceId returned error",
+ entry("ERROR=%s", e.what()));
+ return;
+ }
+
+ // Prepare the SetStateEffecterStates request to reset the OCC
+ auto request = prepareSetEffecterReq(instanceId, effecterEntry->second,
+ effecterCount, bootRestartPosition);
+
+ if (request.empty())
+ {
+ log<level::ERR>("pldm: SetStateEffecterStates request message empty");
+ return;
+ }
+
+ // Connect to MCTP scoket
+ int fd = pldm_open();
+ if (fd == -1)
+ {
+ log<level::ERR>("pldm: Failed to connect to MCTP socket");
+ return;
+ }
+ open_power::occ::FileDescriptor fileFd(fd);
+
+ // Send the PLDM request message to HBRT
+ uint8_t* response = nullptr;
+ size_t responseSize{};
+ auto rc = pldm_send_recv(mctpEid, fileFd(), request.data(), request.size(),
+ &response, &responseSize);
+ std::unique_ptr<uint8_t, decltype(std::free)*> responsePtr{response,
+ std::free};
+ if (rc)
+ {
+ log<level::ERR>("pldm: pldm_send_recv failed for OCC reset",
+ entry("RC=%d", rc));
+ }
+
+ uint8_t completionCode{};
+ auto responseMsg = reinterpret_cast<const pldm_msg*>(responsePtr.get());
+ auto rcDecode = decode_set_state_effecter_states_resp(
+ responseMsg, responseSize - sizeof(pldm_msg_hdr), &completionCode);
+ if (rcDecode || completionCode)
+ {
+ log<level::ERR>(
+ "pldm: decode_set_state_effecter_states_resp returned error",
+ entry("RC=%d", rcDecode),
+ entry("COMPLETION_CODE=%d", completionCode));
+ }
+
+ return;
+}
+
} // namespace pldm
\ No newline at end of file