src/proto/packet.proto

   1 // Copyright (c) 2012-2013 ARM Limited
   2 // All rights reserved
   3 //
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   8 // licensed hereunder.  You may use the software subject to the license
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  11 // modified or unmodified, in source code or in binary form.
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  14 // modification, are permitted provided that the following conditions are
  15 // met: redistributions of source code must retain the above copyright
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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 // Put all the generated messages in a namespace
  39 package ProtoMessage;
  40
  41 // Packet header with the identifier describing what object captured
  42 // the trace, the version of this file format, and the tick frequency
  43 // for all the packet time stamps.
  44 message PacketHeader {
  45   required string obj_id = 1;
  46   optional uint32 ver = 2 [default = 0];
  47   required uint64 tick_freq = 3;
  48 }
  49
  50 // Each packet in the trace contains a tick (which can be translated
  51 // to absolute time using the frequency in the header), the command,
  52 // the address, and the size in bytes. The optional flags are used to
  53 // capture the request flags that convey information about
  54 // cacheability, if the packet is an instruction fetch or prefetch or
  55 // not, etc. An optional id field is added for generic use to identify
  56 // the packet or the "owner" of the packet. An example of the latter
  57 // is the sequential id of an instruction, or the master id etc.
  58 message Packet {
  59   required uint64 tick = 1;
  60   required uint32 cmd = 2;
  61   required uint64 addr = 3;
  62   required uint32 size = 4;
  63   optional uint32 flags = 5;
  64   optional uint64 pkt_id = 6;
  65 }