1 /**
2  * Copyright © 2019 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 "callouts.hpp"
17 
18 #include <phosphor-logging/lg2.hpp>
19 
20 #include <algorithm>
21 
22 namespace openpower
23 {
24 namespace pels
25 {
26 namespace src
27 {
28 
29 Callouts::Callouts(Stream& pel)
30 {
31     pel >> _subsectionID >> _subsectionFlags >> _subsectionWordLength;
32 
33     size_t currentLength = sizeof(_subsectionID) + sizeof(_subsectionFlags) +
34                            sizeof(_subsectionWordLength);
35 
36     while ((_subsectionWordLength * 4) > currentLength)
37     {
38         _callouts.emplace_back(new Callout(pel));
39         currentLength += _callouts.back()->flattenedSize();
40     }
41 }
42 
43 void Callouts::flatten(Stream& pel) const
44 {
45     pel << _subsectionID << _subsectionFlags << _subsectionWordLength;
46 
47     for (auto& callout : _callouts)
48     {
49         callout->flatten(pel);
50     }
51 }
52 
53 void Callouts::addCallout(std::unique_ptr<Callout> callout)
54 {
55     bool shouldAdd = true;
56 
57     // Check if there is already a callout for this FRU
58     auto it = std::ranges::find_if(
59         _callouts, [&callout](const auto& c) { return *callout == *c; });
60 
61     // If the callout already exists, but the new one has a higher
62     // priority, change the existing callout's priority to this
63     // new value and don't add the new one.
64     if (it != _callouts.end())
65     {
66         if (*callout > **it)
67         {
68             (*it)->setPriority(callout->priority());
69         }
70         shouldAdd = false;
71     }
72 
73     if (shouldAdd)
74     {
75         if (_callouts.size() < maxNumberOfCallouts)
76         {
77             _callouts.push_back(std::move(callout));
78 
79             _subsectionWordLength += _callouts.back()->flattenedSize() / 4;
80         }
81         else
82         {
83             lg2::info("Dropping PEL callout because at max");
84         }
85     }
86 
87     std::ranges::sort(_callouts,
88                       [](const auto& c1, const auto& c2) { return *c1 > *c2; });
89 }
90 
91 } // namespace src
92 } // namespace pels
93 } // namespace openpower
94