1 # Copyright (c) 2018 ARM Limited
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
6 # property including but not limited to intellectual property relating
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,
11 # modified or unmodified, in source code or in binary form.
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
18 # notice, this list of conditions and the following disclaimer in the
19 # documentation and/or other materials provided with the distribution;
20 # neither the name of the copyright holders nor the names of its
21 # contributors may be used to endorse or promote products derived from
22 # this software without specific prior written permission.
24 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 # Authors: Giacomo Travaglini
38 from six
import string_types
40 from m5
.SimObject
import *
41 from m5
.params
import *
43 # QoS scheduler policy used to serve incoming transaction
44 class QoSPolicy(SimObject
):
47 cxx_header
= "mem/qos/policy.hh"
48 cxx_class
= 'QoS::Policy'
50 class QoSFixedPriorityPolicy(QoSPolicy
):
51 type = 'QoSFixedPriorityPolicy'
52 cxx_header
= "mem/qos/policy_fixed_prio.hh"
53 cxx_class
= 'QoS::FixedPriorityPolicy'
56 PyBindMethod('initMasterName'),
57 PyBindMethod('initMasterObj'),
62 def setMasterPriority(self
, master
, priority
):
63 if not self
._mpriorities
:
64 self
._mpriorities
= []
66 self
._mpriorities
.append([master
, priority
])
69 if not self
._mpriorities
:
70 print("Error, use setMasterPriority to init masters/priorities\n");
73 for mprio
in self
._mpriorities
:
76 if isinstance(master
, string_types
):
77 self
.getCCObject().initMasterName(
78 master
, int(priority
))
80 self
.getCCObject().initMasterObj(
81 master
.getCCObject(), priority
)
83 # default fixed priority value for non-listed Masters
84 qos_fixed_prio_default_prio
= Param
.UInt8(0,
85 "Default priority for non-listed Masters")
87 class QoSPropFairPolicy(QoSPolicy
):
88 type = 'QoSPropFairPolicy'
89 cxx_header
= "mem/qos/policy_pf.hh"
90 cxx_class
= 'QoS::PropFairPolicy'
93 PyBindMethod('initMasterName'),
94 PyBindMethod('initMasterObj'),
99 def setInitialScore(self
, master
, score
):
100 if not self
._mscores
:
103 self
._mscores
.append([master
, score
])
106 if not self
._mscores
:
107 print("Error, use setInitialScore to init masters/scores\n");
110 for mprio
in self
._mscores
:
113 if isinstance(master
, string_types
):
114 self
.getCCObject().initMasterName(
115 master
, float(score
))
117 self
.getCCObject().initMasterObj(
118 master
.getCCObject(), float(score
))
120 weight
= Param
.Float(0.5, "Pf score weight")