packet.proto revision 11247:76f75db08e09 
1// Copyright (c) 2012-2013 ARM Limited
2// All rights reserved
3//
4// The license below extends only to copyright in the software and shall
5// not be construed as granting a license to any other intellectual
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7// to a hardware implementation of the functionality of the software
8// licensed hereunder.  You may use the software subject to the license
9// terms below provided that you ensure that this notice is replicated
10// unmodified and in its entirety in all distributions of the software,
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12//
13// Redistribution and use in source and binary forms, with or without
14// modification, are permitted provided that the following conditions are
15// met: redistributions of source code must retain the above copyright
16// notice, this list of conditions and the following disclaimer;
17// redistributions in binary form must reproduce the above copyright
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20// neither the name of the copyright holders nor the names of its
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22// this software without specific prior written permission.
23//
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
39package 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.
44message 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// An optional field for PC of the instruction for which this request is made
59// is provided.
60message Packet {
61  required uint64 tick = 1;
62  required uint32 cmd = 2;
63  required uint64 addr = 3;
64  required uint32 size = 4;
65  optional uint32 flags = 5;
66  optional uint64 pkt_id = 6;
67  optional uint64 pc = 7;
68}
69