src/proto/packet.proto

   1 // Copyright (c) 2012-2013,2017 ARM Limited
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   8 // licensed hereunder.  You may use the software subject to the license
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  24 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  35 //
  36 // Authors: Andreas Hansson
  37
  38 syntax = "proto2";
  39
  40 // Put all the generated messages in a namespace
  41 package ProtoMessage;
  42
  43 // Packet header with the identifier describing what object captured
  44 // the trace, the version of this file format, and the tick frequency
  45 // for all the packet time stamps.
  46 message PacketHeader {
  47   required string obj_id = 1;
  48   optional uint32 ver = 2 [default = 0];
  49   required uint64 tick_freq = 3;
  50 }
  51
  52 // Each packet in the trace contains a tick (which can be translated
  53 // to absolute time using the frequency in the header), the command,
  54 // the address, and the size in bytes. The optional flags are used to
  55 // capture the request flags that convey information about
  56 // cacheability, if the packet is an instruction fetch or prefetch or
  57 // not, etc. An optional id field is added for generic use to identify
  58 // the packet or the "owner" of the packet. An example of the latter
  59 // is the sequential id of an instruction, or the master id etc.
  60 // An optional field for PC of the instruction for which this request is made
  61 // is provided.
  62 message Packet {
  63   required uint64 tick = 1;
  64   required uint32 cmd = 2;
  65   required uint64 addr = 3;
  66   required uint32 size = 4;
  67   optional uint32 flags = 5;
  68   optional uint64 pkt_id = 6;
  69   optional uint64 pc = 7;
  70 }