blob: 25be92258c2c69dc92f0f4b47dcf1c17577cfd91 [file] [log] [blame]
#include "read_fru_data.hpp"
#include "fruread.hpp"
#include <ipmid/api.hpp>
#include <ipmid/types.hpp>
#include <ipmid/utils.hpp>
#include <phosphor-logging/elog-errors.hpp>
#include <sdbusplus/message/types.hpp>
#include <xyz/openbmc_project/Common/error.hpp>
#include <algorithm>
#include <map>
extern const FruMap frus;
namespace ipmi
{
namespace fru
{
using namespace phosphor::logging;
using InternalFailure =
sdbusplus::xyz::openbmc_project::Common::Error::InternalFailure;
std::unique_ptr<sdbusplus::bus::match_t> matchPtr
__attribute__((init_priority(101)));
namespace cache
{
// User initiate read FRU info area command followed by
// FRU read command. Also data is read in small chunks of
// the specified offset and count.
// Caching the data which will be invalidated when ever there
// is a change in FRU properties.
FRUAreaMap fruMap;
} // namespace cache
/**
* @brief Read all the property value's for the specified interface
* from Inventory.
*
* @param[in] intf Interface
* @param[in] path Object path
* @return map of properties
*/
ipmi::PropertyMap readAllProperties(const std::string& intf,
const std::string& path)
{
ipmi::PropertyMap properties;
sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};
std::string service;
std::string objPath;
// Is the path the full dbus path?
if (path.find(xyzPrefix) != std::string::npos)
{
service = ipmi::getService(bus, intf, path);
objPath = path;
}
else
{
service = ipmi::getService(bus, invMgrInterface, invObjPath);
objPath = invObjPath + path;
}
auto method = bus.new_method_call(service.c_str(), objPath.c_str(),
propInterface, "GetAll");
method.append(intf);
try
{
auto reply = bus.call(method);
reply.read(properties);
}
catch (const sdbusplus::exception_t& e)
{
// If property is not found simply return empty value
log<level::ERR>("Error in reading property values",
entry("EXCEPTION=%s", e.what()),
entry("INTERFACE=%s", intf.c_str()),
entry("PATH=%s", objPath.c_str()));
}
return properties;
}
void processFruPropChange(sdbusplus::message_t& msg)
{
if (cache::fruMap.empty())
{
return;
}
std::string path = msg.get_path();
// trim the object base path, if found at the beginning
if (path.compare(0, strlen(invObjPath), invObjPath) == 0)
{
path.erase(0, strlen(invObjPath));
}
for (const auto& [fruId, instanceList] : frus)
{
auto found = std::find_if(instanceList.begin(), instanceList.end(),
[&path](const auto& iter) {
return (iter.path == path);
});
if (found != instanceList.end())
{
cache::fruMap.erase(fruId);
break;
}
}
}
// register for fru property change
int registerCallbackHandler()
{
if (matchPtr == nullptr)
{
using namespace sdbusplus::bus::match::rules;
sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};
matchPtr = std::make_unique<sdbusplus::bus::match_t>(
bus,
path_namespace(invObjPath) + type::signal() +
member("PropertiesChanged") + interface(propInterface),
std::bind(processFruPropChange, std::placeholders::_1));
}
return 0;
}
/**
* @brief Read FRU property values from Inventory
*
* @param[in] fruNum FRU id
* @return populate FRU Inventory data
*/
FruInventoryData readDataFromInventory(const FRUId& fruNum)
{
auto iter = frus.find(fruNum);
if (iter == frus.end())
{
log<level::ERR>("Unsupported FRU ID ", entry("FRUID=%d", fruNum));
elog<InternalFailure>();
}
FruInventoryData data;
auto& instanceList = iter->second;
for (auto& instance : instanceList)
{
for (auto& intf : instance.interfaces)
{
ipmi::PropertyMap allProp = readAllProperties(intf.first,
instance.path);
for (auto& properties : intf.second)
{
auto iter = allProp.find(properties.first);
if (iter != allProp.end())
{
data[properties.second.section].emplace(
properties.second.property,
std::move(
std::get<std::string>(allProp[properties.first])));
}
}
}
}
return data;
}
const FruAreaData& getFruAreaData(const FRUId& fruNum)
{
auto iter = cache::fruMap.find(fruNum);
if (iter != cache::fruMap.end())
{
return iter->second;
}
auto invData = readDataFromInventory(fruNum);
// Build area info based on inventory data
FruAreaData newdata = buildFruAreaData(std::move(invData));
cache::fruMap.emplace(fruNum, std::move(newdata));
return cache::fruMap.at(fruNum);
}
} // namespace fru
} // namespace ipmi