1 /**
2  * Copyright © 2017 IBM Corporation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #include <iostream>
17 #include <phosphor-logging/log.hpp>
18 #include <systemd/sd-daemon.h>
19 #include "argument.hpp"
20 #include "event.hpp"
21 #include "power_supply.hpp"
22 #include "device_monitor.hpp"
23 
24 using namespace witherspoon::power;
25 using namespace phosphor::logging;
26 
27 int main(int argc, char* argv[])
28 {
29     auto options = ArgumentParser(argc, argv);
30 
31     auto objpath = (options)["path"];
32     auto instnum = (options)["instance"];
33     auto invpath = (options)["inventory"];
34     if (argc < 4)
35     {
36         std::cerr << std::endl << "Too few arguments" << std::endl;
37         options.usage(argv);
38         return -1;
39     }
40 
41     if (objpath == ArgumentParser::emptyString)
42     {
43         log<level::ERR>("Device monitoring path argument required");
44         return -2;
45     }
46 
47     if (instnum == ArgumentParser::emptyString)
48     {
49         log<level::ERR>("Device monitoring instance number argument required");
50         return -3;
51     }
52 
53     if (invpath == ArgumentParser::emptyString)
54     {
55         log<level::ERR>("Device monitoring inventory path argument required");
56         return -4;
57     }
58 
59     sd_event* events = nullptr;
60 
61     auto r = sd_event_default(&events);
62     if (r < 0)
63     {
64         log<level::ERR>("Failed call to sd_event_default()",
65                         entry("ERROR=%s", strerror(-r)));
66         return -5;
67     }
68 
69     auto bus = sdbusplus::bus::new_default();
70     witherspoon::power::event::Event eventPtr{events};
71 
72     //Attach the event object to the bus object so we can
73     //handle both sd_events (for the timers) and dbus signals.
74     bus.attach_event(eventPtr.get(), SD_EVENT_PRIORITY_NORMAL);
75 
76     auto objname = "power_supply" + instnum;
77     auto instance = std::stoul(instnum);
78     // The state changes from 0 to 1 when the BMC_POWER_UP line to the power
79     // sequencer is asserted. It can take 50ms for the sequencer to assert the
80     // ENABLE# line that goes to the power supplies. The Witherspoon power
81     // supply can take a max of 100ms from ENABLE# asserted to 12V in spec.
82     // Once 12V in spec., the power supply will nominally take 1 second to
83     // assert DC_GOOD (and update POWER_GOOD Negated), +/1 100ms. That would
84     // give us a 1250ms delay from state=1 to checking STATUS_WORD, however,
85     // the sysfs files will only be updated by the ibm-cffps device driver once
86     // a second, so round up that delay to 2 seconds.
87     std::chrono::seconds powerOnDelay(2);
88     auto psuDevice = std::make_unique<psu::PowerSupply>(objname,
89                                                         std::move(instance),
90                                                         std::move(objpath),
91                                                         std::move(invpath),
92                                                         bus,
93                                                         eventPtr,
94                                                         powerOnDelay);
95 
96     auto pollInterval = std::chrono::milliseconds(1000);
97     DeviceMonitor mainloop(std::move(psuDevice), eventPtr, pollInterval);
98     mainloop.run();
99 
100     return 0;
101 }
102