1 #pragma once
2 
3 #include "stream.hpp"
4 
5 namespace openpower
6 {
7 namespace pels
8 {
9 namespace src
10 {
11 
12 /**
13  * @class MRU
14  *
15  * This represents the MRU (Manufacturing Replaceable Unit)
16  * substructure in the callout subsection of the SRC PEL section.
17  *
18  * Manufacturing replaceable units have a finer granularity than
19  * a field replaceable unit, such as a chip on a card, and are
20  * intended to be used during manufacturing.
21  *
22  * This substructure can contain up to 128 MRU callouts, each
23  * containing a MRU ID and a callout priority value.
24  */
25 class MRU
26 {
27   public:
28     /**
29      * @brief A single MRU callout, which contains a priority
30      *        and a MRU ID.
31      *
32      * The priority value is the same priority type character
33      * value as in the parent callout structure. For alignment
34      * purposes it is a 4 byte field, though only the LSB contains
35      * the priority value.
36      */
37     struct MRUCallout
38     {
39         uint32_t priority;
40         uint32_t id;
41     };
42 
43     MRU() = delete;
44     ~MRU() = default;
45     MRU(const MRU&) = default;
46     MRU& operator=(const MRU&) = default;
47     MRU(MRU&&) = default;
48     MRU& operator=(MRU&&) = default;
49 
50     /**
51      * @brief Constructor
52      *
53      * Fills in this class's data fields from the stream.
54      *
55      * @param[in] pel - the PEL data stream
56      */
57     explicit MRU(Stream& pel);
58 
59     /**
60      * @brief Constructor
61      *
62      * Creates the object using the passed in MRUs
63      *
64      * @param[in] mrus - The  MRUs
65      */
66     explicit MRU(const std::vector<MRUCallout>& mrus);
67 
68     /**
69      * @brief Flatten the object into the stream
70      *
71      * @param[in] stream - The stream to write to
72      */
73     void flatten(Stream& pel) const;
74 
75     /**
76      * @brief Returns the size of this structure when flattened into a PEL
77      *
78      * @return size_t - The size of the section
79      */
flattenedSize() const80     size_t flattenedSize() const
81     {
82         return _size;
83     }
84 
85     /**
86      * @brief Returns the contained MRU callouts.
87      *
88      * @return const std::vector<MRUCallout>& - The MRUs
89      */
mrus() const90     const std::vector<MRUCallout>& mrus() const
91     {
92         return _mrus;
93     }
94 
95     /**
96      * @brief Returns the size field
97      *
98      * @return size_t - The size of the MRU substructure
99      */
size() const100     size_t size() const
101     {
102         return _size;
103     }
104 
105     /**
106      * @brief Returns the flags field
107      *
108      * @return uint8_t - The flags
109      */
flags() const110     uint8_t flags() const
111     {
112         return _flags;
113     }
114 
115     /**
116      * @brief The type identifier value of this structure.
117      */
118     static const uint16_t substructureType = 0x4D52; // "MR"
119 
120   private:
121     /**
122      * @brief The callout substructure type field. Will be 'MR'.
123      */
124     uint16_t _type;
125 
126     /**
127      * @brief The size of this callout structure.
128      */
129     uint8_t _size;
130 
131     /**
132      * @brief The flags byte of this substructure.
133      *
134      * 0x0Y: Y = number of MRU callouts
135      */
136     uint8_t _flags;
137 
138     /**
139      * @brief Reserved 4 bytes
140      */
141     uint32_t _reserved4B;
142 
143     /*
144      * @brief The MRU callouts
145      */
146     std::vector<MRUCallout> _mrus;
147 };
148 
149 } // namespace src
150 } // namespace pels
151 } // namespace openpower
152