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