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/**
* Copyright 2017 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <host-ipmid/ipmid-api.h>
#include <host-ipmid/iana.hpp>
#include <host-ipmid/oemopenbmc.hpp>
#include <host-ipmid/oemrouter.hpp>
#include <map>
#include <sdbusplus/bus.hpp>
#include <sdbusplus/message.hpp>
#include <string>
#include <tuple>
enum ManualSubCmd
{
GET_CONTROL_STATE = 0,
SET_CONTROL_STATE = 1,
GET_FAILSAFE_STATE = 2,
};
struct FanCtrlRequest
{
uint8_t command;
uint8_t zone;
} __attribute__((packed));
struct FanCtrlRequestSet
{
uint8_t command;
uint8_t zone;
uint8_t value;
} __attribute__((packed));
static constexpr auto objectPath = "/xyz/openbmc_project/settings/fanctrl/zone";
static constexpr auto busName = "xyz.openbmc_project.State.FanCtrl";
static constexpr auto intf = "xyz.openbmc_project.Control.Mode";
static constexpr auto manualProperty = "Manual";
static constexpr auto failsafeProperty = "FailSafe";
static constexpr auto propertiesintf = "org.freedesktop.DBus.Properties";
using Property = std::string;
using Value = sdbusplus::message::variant<bool>;
using PropertyMap = std::map<Property, Value>;
/* The following was copied directly from my manual thread handler. */
static std::string GetControlPath(int8_t zone)
{
return std::string(objectPath) + std::to_string(zone);
}
/*
* busctl call xyz.openbmc_project.State.FanCtrl \
* /xyz/openbmc_project/settings/fanctrl/zone1 \
* org.freedesktop.DBus.Properties \
* GetAll \
* s \
* xyz.openbmc_project.Control.Mode
* a{sv} 2 "Manual" b false "FailSafe" b false
*/
static ipmi_ret_t GetFanCtrlProperty(uint8_t zoneId, bool* value,
const std::string& property)
{
std::string path = GetControlPath(zoneId);
auto propertyReadBus = sdbusplus::bus::new_default();
auto pimMsg = propertyReadBus.new_method_call(busName, path.c_str(),
propertiesintf, "GetAll");
pimMsg.append(intf);
try
{
PropertyMap propMap;
/* a method could error but the call not error. */
auto valueResponseMsg = propertyReadBus.call(pimMsg);
valueResponseMsg.read(propMap);
*value = sdbusplus::message::variant_ns::get<bool>(propMap[property]);
}
catch (const sdbusplus::exception::SdBusError& ex)
{
return IPMI_CC_INVALID;
}
return IPMI_CC_OK;
}
static ipmi_ret_t GetFailsafeModeState(const uint8_t* reqBuf, uint8_t* replyBuf,
size_t* dataLen)
{
ipmi_ret_t rc = IPMI_CC_OK;
bool current;
if (*dataLen < sizeof(struct FanCtrlRequest))
{
return IPMI_CC_INVALID;
}
const auto request =
reinterpret_cast<const struct FanCtrlRequest*>(&reqBuf[0]);
rc = GetFanCtrlProperty(request->zone, &current, failsafeProperty);
if (rc)
{
return rc;
}
*replyBuf = (uint8_t)current;
*dataLen = sizeof(uint8_t);
return rc;
}
/*
* <method name="GetAll">
* <arg name="interface" direction="in" type="s"/>
* <arg name="properties" direction="out" type="a{sv}"/>
* </method>
*/
static ipmi_ret_t GetManualModeState(const uint8_t* reqBuf, uint8_t* replyBuf,
size_t* dataLen)
{
ipmi_ret_t rc = IPMI_CC_OK;
bool current;
if (*dataLen < sizeof(struct FanCtrlRequest))
{
return IPMI_CC_INVALID;
}
const auto request =
reinterpret_cast<const struct FanCtrlRequest*>(&reqBuf[0]);
rc = GetFanCtrlProperty(request->zone, &current, manualProperty);
if (rc)
{
return rc;
}
*replyBuf = (uint8_t)current;
*dataLen = sizeof(uint8_t);
return rc;
}
/*
* <method name="Set">
* <arg name="interface" direction="in" type="s"/>
* <arg name="property" direction="in" type="s"/>
* <arg name="value" direction="in" type="v"/>
* </method>
*/
static ipmi_ret_t SetManualModeState(const uint8_t* reqBuf, uint8_t* replyBuf,
size_t* dataLen)
{
ipmi_ret_t rc = IPMI_CC_OK;
if (*dataLen < sizeof(struct FanCtrlRequestSet))
{
return IPMI_CC_INVALID;
}
using Value = sdbusplus::message::variant<bool>;
const auto request =
reinterpret_cast<const struct FanCtrlRequestSet*>(&reqBuf[0]);
/* 0 is false, 1 is true */
bool setValue = static_cast<bool>(request->value);
Value v{setValue};
auto PropertyWriteBus = sdbusplus::bus::new_default();
std::string path = GetControlPath(request->zone);
auto pimMsg = PropertyWriteBus.new_method_call(busName, path.c_str(),
propertiesintf, "Set");
pimMsg.append(intf);
pimMsg.append(manualProperty);
pimMsg.append(v);
try
{
PropertyWriteBus.call_noreply(pimMsg);
}
catch (const sdbusplus::exception::SdBusError& ex)
{
rc = IPMI_CC_INVALID;
}
/* TODO(venture): Should sanity check the result. */
return rc;
}
/* Three command packages: get, set true, set false */
static ipmi_ret_t ManualModeControl(ipmi_cmd_t cmd, const uint8_t* reqBuf,
uint8_t* replyCmdBuf, size_t* dataLen)
{
ipmi_ret_t rc = IPMI_CC_OK;
// FanCtrlRequest is the smaller of the requests, so it's at a minimum.
if (*dataLen < sizeof(struct FanCtrlRequest))
{
return IPMI_CC_INVALID;
}
const auto request =
reinterpret_cast<const struct FanCtrlRequest*>(&reqBuf[0]);
switch (request->command)
{
case GET_CONTROL_STATE:
return GetManualModeState(reqBuf, replyCmdBuf, dataLen);
case SET_CONTROL_STATE:
return SetManualModeState(reqBuf, replyCmdBuf, dataLen);
case GET_FAILSAFE_STATE:
return GetFailsafeModeState(reqBuf, replyCmdBuf, dataLen);
default:
rc = IPMI_CC_INVALID;
}
return rc;
}
void setupGlobalOemFanControl() __attribute__((constructor));
void setupGlobalOemFanControl()
{
oem::Router* router = oem::mutableRouter();
fprintf(stderr,
"Registering OEM:[%#08X], Cmd:[%#04X] for Manual Zone Control\n",
oem::obmcOemNumber, oem::Cmd::fanManualCmd);
router->registerHandler(oem::obmcOemNumber, oem::Cmd::fanManualCmd,
ManualModeControl);
}