clock_domain.cc (9827:f47274776aa0) clock_domain.cc (10000:99bd071911cf)
1/*
2 * Copyright (c) 2013 ARM Limited
1/*
2 * Copyright (c) 2013 ARM Limited
3 * Copyright (c) 2013 Cornell University
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated

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32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Vasileios Spiliopoulos
38 * Akash Bagdia
39 * Andreas Hansson
4 * All rights reserved
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating
9 * to a hardware implementation of the functionality of the software
10 * licensed hereunder. You may use the software subject to the license
11 * terms below provided that you ensure that this notice is replicated

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33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 *
38 * Authors: Vasileios Spiliopoulos
39 * Akash Bagdia
40 * Andreas Hansson
41 * Christopher Torng
40 */
41
42#include "debug/ClockDomain.hh"
43#include "params/ClockDomain.hh"
44#include "params/DerivedClockDomain.hh"
45#include "params/SrcClockDomain.hh"
46#include "sim/clock_domain.hh"
47#include "sim/voltage_domain.hh"
42 */
43
44#include "debug/ClockDomain.hh"
45#include "params/ClockDomain.hh"
46#include "params/DerivedClockDomain.hh"
47#include "params/SrcClockDomain.hh"
48#include "sim/clock_domain.hh"
49#include "sim/voltage_domain.hh"
50#include "sim/clocked_object.hh"
48
49double
50ClockDomain::voltage() const
51{
52 return _voltageDomain->voltage();
53}
54
55SrcClockDomain::SrcClockDomain(const Params *p) :

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60
61void
62SrcClockDomain::clockPeriod(Tick clock_period)
63{
64 if (clock_period == 0) {
65 fatal("%s has a clock period of zero\n", name());
66 }
67
51
52double
53ClockDomain::voltage() const
54{
55 return _voltageDomain->voltage();
56}
57
58SrcClockDomain::SrcClockDomain(const Params *p) :

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63
64void
65SrcClockDomain::clockPeriod(Tick clock_period)
66{
67 if (clock_period == 0) {
68 fatal("%s has a clock period of zero\n", name());
69 }
70
71 // Align all members to the current tick
72 for (auto m = members.begin(); m != members.end(); ++m) {
73 (*m)->updateClockPeriod();
74 }
75
68 _clockPeriod = clock_period;
69
70 DPRINTF(ClockDomain,
71 "Setting clock period to %d ticks for source clock %s\n",
72 _clockPeriod, name());
73
74 // inform any derived clocks they need to updated their period
75 for (auto c = children.begin(); c != children.end(); ++c) {

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100
101 // update our clock period based on the parents clock
102 updateClockPeriod();
103}
104
105void
106DerivedClockDomain::updateClockPeriod()
107{
76 _clockPeriod = clock_period;
77
78 DPRINTF(ClockDomain,
79 "Setting clock period to %d ticks for source clock %s\n",
80 _clockPeriod, name());
81
82 // inform any derived clocks they need to updated their period
83 for (auto c = children.begin(); c != children.end(); ++c) {

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108
109 // update our clock period based on the parents clock
110 updateClockPeriod();
111}
112
113void
114DerivedClockDomain::updateClockPeriod()
115{
116 // Align all members to the current tick
117 for (auto m = members.begin(); m != members.end(); ++m) {
118 (*m)->updateClockPeriod();
119 }
120
108 // recalculate the clock period, relying on the fact that changes
109 // propagate downwards in the tree
110 _clockPeriod = parent.clockPeriod() * clockDivider;
111
112 DPRINTF(ClockDomain,
113 "Setting clock period to %d ticks for derived clock %s\n",
114 _clockPeriod, name());
115
116 // inform any derived clocks
117 for (auto c = children.begin(); c != children.end(); ++c) {
118 (*c)->updateClockPeriod();
119 }
120}
121
122DerivedClockDomain *
123DerivedClockDomainParams::create()
124{
125 return new DerivedClockDomain(this);
126}
121 // recalculate the clock period, relying on the fact that changes
122 // propagate downwards in the tree
123 _clockPeriod = parent.clockPeriod() * clockDivider;
124
125 DPRINTF(ClockDomain,
126 "Setting clock period to %d ticks for derived clock %s\n",
127 _clockPeriod, name());
128
129 // inform any derived clocks
130 for (auto c = children.begin(); c != children.end(); ++c) {
131 (*c)->updateClockPeriod();
132 }
133}
134
135DerivedClockDomain *
136DerivedClockDomainParams::create()
137{
138 return new DerivedClockDomain(this);
139}