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 "config.h"
17 
18 #include "argument.hpp"
19 #include "device_monitor.hpp"
20 #include "power_supply.hpp"
21 
22 #include <phosphor-logging/log.hpp>
23 #include <sdeventplus/event.hpp>
24 
25 #include <iostream>
26 
27 using namespace witherspoon::power;
28 using namespace phosphor::logging;
29 
main(int argc,char * argv[])30 int main(int argc, char* argv[])
31 {
32     auto options = ArgumentParser(argc, argv);
33 
34     auto objpath = (options)["path"];
35     auto instnum = (options)["instance"];
36     auto invpath = (options)["inventory"];
37     if (argc < 4)
38     {
39         std::cerr << std::endl << "Too few arguments" << std::endl;
40         options.usage(argv);
41         return -1;
42     }
43 
44     if (objpath == ArgumentParser::emptyString)
45     {
46         log<level::ERR>("Device monitoring path argument required");
47         return -2;
48     }
49 
50     if (instnum == ArgumentParser::emptyString)
51     {
52         log<level::ERR>("Device monitoring instance number argument required");
53         return -3;
54     }
55 
56     if (invpath == ArgumentParser::emptyString)
57     {
58         log<level::ERR>("Device monitoring inventory path argument required");
59         return -4;
60     }
61 
62     auto bus = sdbusplus::bus::new_default();
63     auto event = sdeventplus::Event::get_default();
64 
65     // Attach the event object to the bus object so we can
66     // handle both sd_events (for the timers) and dbus signals.
67     bus.attach_event(event.get(), SD_EVENT_PRIORITY_NORMAL);
68 
69     auto objname = "power_supply" + instnum;
70     auto instance = std::stoul(instnum);
71     // The state changes from 0 to 1 when the BMC_POWER_UP line to the power
72     // sequencer is asserted. It can take 50ms for the sequencer to assert the
73     // ENABLE# line that goes to the power supplies. The Witherspoon power
74     // supply can take a max of 100ms from ENABLE# asserted to 12V in spec.
75     // Once 12V in spec., the power supply will nominally take 1 second to
76     // assert DC_GOOD (and update POWER_GOOD Negated), +/1 100ms. That would
77     // give us a 1250ms delay from state=1 to checking STATUS_WORD, however,
78     // the sysfs files will only be updated by the ibm-cffps device driver once
79     // a second, so rounding up from 1 to 5 seconds.
80     std::chrono::seconds powerOnDelay(5);
81     // Timer to delay setting internal presence tracking. Allows for servicing
82     // the power supply.
83     std::chrono::seconds presentDelay(2);
84     auto psuDevice = std::make_unique<psu::PowerSupply>(
85         objname, std::move(instance), std::move(objpath), std::move(invpath),
86         bus, event, powerOnDelay, presentDelay);
87 
88     // Get the number of input power history records to keep in D-Bus.
89     long int numRecords = 0;
90     auto records = (options)["num-history-records"];
91     if (records != ArgumentParser::emptyString)
92     {
93         numRecords = std::stol(records);
94         if (numRecords < 0)
95         {
96             std::cerr << "Invalid number of history records specified.\n";
97             return -6;
98         }
99     }
100 
101     if (numRecords != 0)
102     {
103         // Get the GPIO information for controlling the SYNC signal.
104         // If one is there, they both must be.
105         auto syncGPIOPath = (options)["sync-gpio-path"];
106         auto syncGPIONum = (options)["sync-gpio-num"];
107 
108         if (((syncGPIOPath == ArgumentParser::emptyString) &&
109              (syncGPIONum != ArgumentParser::emptyString)) ||
110             ((syncGPIOPath != ArgumentParser::emptyString) &&
111              (syncGPIONum == ArgumentParser::emptyString)))
112         {
113             std::cerr << "Invalid sync GPIO number or path\n";
114             return -7;
115         }
116 
117         size_t gpioNum = 0;
118         if (syncGPIONum != ArgumentParser::emptyString)
119         {
120             gpioNum = stoul(syncGPIONum);
121         }
122 
123         std::string name{"ps" + instnum + "_input_power"};
124         std::string basePath =
125             std::string{INPUT_HISTORY_SENSOR_ROOT} + '/' + name;
126 
127         psuDevice->enableHistory(basePath, numRecords, syncGPIOPath, gpioNum);
128 
129         // Systemd object manager
130         sdbusplus::server::manager_t objManager{bus, basePath.c_str()};
131 
132         std::string busName =
133             std::string{INPUT_HISTORY_BUSNAME_ROOT} + '.' + name;
134         bus.request_name(busName.c_str());
135     }
136 
137     auto pollInterval = std::chrono::milliseconds(1000);
138     return DeviceMonitor(std::move(psuDevice), event, pollInterval).run();
139 }
140