diff options
Diffstat (limited to 'src/sim')
| -rw-r--r-- | src/sim/ClockDomain.py | 4 | ||||
| -rw-r--r-- | src/sim/SConscript | 3 | ||||
| -rw-r--r-- | src/sim/VoltageDomain.py | 47 | ||||
| -rw-r--r-- | src/sim/clock_domain.cc | 12 | ||||
| -rw-r--r-- | src/sim/clock_domain.hh | 29 | ||||
| -rw-r--r-- | src/sim/voltage_domain.cc | 68 | ||||
| -rw-r--r-- | src/sim/voltage_domain.hh | 84 |
7 files changed, 243 insertions, 4 deletions
diff --git a/src/sim/ClockDomain.py b/src/sim/ClockDomain.py index 37958dc26..2a3b6addf 100644 --- a/src/sim/ClockDomain.py +++ b/src/sim/ClockDomain.py @@ -38,6 +38,7 @@ from m5.params import * from m5.SimObject import SimObject +from m5.proxy import * # Abstract clock domain class ClockDomain(SimObject): @@ -51,6 +52,9 @@ class SrcClockDomain(ClockDomain): cxx_header = "sim/clock_domain.hh" clock = Param.Clock("Clock period") + # A source clock must be associated with a voltage domain + voltage_domain = Param.VoltageDomain("Voltage domain") + # Derived clock domain with a parent clock domain and a frequency # divider class DerivedClockDomain(ClockDomain): diff --git a/src/sim/SConscript b/src/sim/SConscript index 7aa4702cd..90d77848b 100644 --- a/src/sim/SConscript +++ b/src/sim/SConscript @@ -35,6 +35,7 @@ SimObject('ClockedObject.py') SimObject('Root.py') SimObject('InstTracer.py') SimObject('ClockDomain.py') +SimObject('VoltageDomain.py') Source('arguments.cc') Source('async.cc') @@ -52,6 +53,7 @@ Source('simulate.cc') Source('stat_control.cc') Source('syscall_emul.cc') Source('clock_domain.cc') +Source('voltage_domain.cc') if env['TARGET_ISA'] != 'no': SimObject('Process.py') @@ -84,3 +86,4 @@ DebugFlag('Timer') DebugFlag('VtoPhys') DebugFlag('WorkItems') DebugFlag('ClockDomain') +DebugFlag('VoltageDomain') diff --git a/src/sim/VoltageDomain.py b/src/sim/VoltageDomain.py new file mode 100644 index 000000000..ad84d756b --- /dev/null +++ b/src/sim/VoltageDomain.py @@ -0,0 +1,47 @@ +# Copyright (c) 2012 ARM Limited +# All rights reserved. +# +# The license below extends only to copyright in the software and shall +# not be construed as granting a license to any other intellectual +# property including but not limited to intellectual property relating +# to a hardware implementation of the functionality of the software +# licensed hereunder. You may use the software subject to the license +# terms below provided that you ensure that this notice is replicated +# unmodified and in its entirety in all distributions of the software, +# modified or unmodified, in source code or in binary form. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer; +# redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution; +# neither the name of the copyright holders nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# +# Authors: Vasileios Spiliopoulos +# Akash Bagdia + +from m5.SimObject import SimObject +from m5.params import * + +class VoltageDomain(SimObject): + type = 'VoltageDomain' + cxx_header = "sim/voltage_domain.hh" + # We use a default voltage of 1V to avoid forcing users to set it + # even if they are not interested in using the functionality + voltage = Param.Voltage('1V', "Operational voltage") diff --git a/src/sim/clock_domain.cc b/src/sim/clock_domain.cc index 262ae904c..8b563d598 100644 --- a/src/sim/clock_domain.cc +++ b/src/sim/clock_domain.cc @@ -44,8 +44,16 @@ #include "params/DerivedClockDomain.hh" #include "params/SrcClockDomain.hh" #include "sim/clock_domain.hh" +#include "sim/voltage_domain.hh" -SrcClockDomain::SrcClockDomain(const Params *p) : ClockDomain(p) +double +ClockDomain::voltage() const +{ + return _voltageDomain->voltage(); +} + +SrcClockDomain::SrcClockDomain(const Params *p) : + ClockDomain(p, p->voltage_domain) { clockPeriod(p->clock); } @@ -76,7 +84,7 @@ SrcClockDomainParams::create() } DerivedClockDomain::DerivedClockDomain(const Params *p) : - ClockDomain(p), + ClockDomain(p, p->clk_domain->voltageDomain()), parent(*p->clk_domain), clockDivider(p->clk_divider) { diff --git a/src/sim/clock_domain.hh b/src/sim/clock_domain.hh index c3f53e675..619f30696 100644 --- a/src/sim/clock_domain.hh +++ b/src/sim/clock_domain.hh @@ -56,10 +56,12 @@ * Forward declaration */ class DerivedClockDomain; +class VoltageDomain; /** * The ClockDomain provides clock to group of clocked objects bundled - * under the same clock domain. The clock domains provide support for + * under the same clock domain. The clock domains, in turn, are + * grouped into voltage domains. The clock domains provide support for * a hierarchial structure with source and derived domains. */ class ClockDomain : public SimObject @@ -74,6 +76,11 @@ class ClockDomain : public SimObject Tick _clockPeriod; /** + * Voltage domain this clock domain belongs to + */ + VoltageDomain *_voltageDomain; + + /** * Pointers to potential derived clock domains so we can propagate * changes. */ @@ -82,7 +89,10 @@ class ClockDomain : public SimObject public: typedef ClockDomainParams Params; - ClockDomain(const Params *p) : SimObject(p), _clockPeriod(0) {} + ClockDomain(const Params *p, VoltageDomain *voltage_domain) : + SimObject(p), + _clockPeriod(0), + _voltageDomain(voltage_domain) {} /** * Get the clock period. @@ -92,6 +102,21 @@ class ClockDomain : public SimObject inline Tick clockPeriod() const { return _clockPeriod; } /** + * Get the voltage domain. + * + * @return Voltage domain this clock domain belongs to + */ + inline VoltageDomain *voltageDomain() const { return _voltageDomain; } + + + /** + * Get the current voltage this clock domain operates at. + * + * @return Voltage applied to the clock domain + */ + inline double voltage() const; + + /** * Add a derived domain. * * @param Derived domain to add as a child diff --git a/src/sim/voltage_domain.cc b/src/sim/voltage_domain.cc new file mode 100644 index 000000000..43848d68a --- /dev/null +++ b/src/sim/voltage_domain.cc @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2012 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Vasileios Spiliopoulos + * Akash Bagdia + */ + +#include "debug/VoltageDomain.hh" +#include "params/VoltageDomain.hh" +#include "sim/sim_object.hh" +#include "sim/voltage_domain.hh" + +VoltageDomain::VoltageDomain(const Params *p) + : SimObject(p), _voltage(0) +{ + voltage(p->voltage); +} + +void +VoltageDomain::voltage(double voltage) +{ + if (voltage <= 0) { + fatal("Voltage should be greater than zero.\n"); + } + + _voltage = voltage; + DPRINTF(VoltageDomain, + "Setting voltage to %f for domain %s\n", _voltage, name()); +} + +VoltageDomain * +VoltageDomainParams::create() +{ + return new VoltageDomain(this); +} diff --git a/src/sim/voltage_domain.hh b/src/sim/voltage_domain.hh new file mode 100644 index 000000000..585ec8d66 --- /dev/null +++ b/src/sim/voltage_domain.hh @@ -0,0 +1,84 @@ +/* + * Copyright (c) 2012 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Vasileios Spiliopoulos + * Akash Bagdia + */ + +#ifndef __SIM_VOLTAGE_DOMAIN_HH__ +#define __SIM_VOLTAGE_DOMAIN_HH__ + +#include "base/statistics.hh" +#include "params/VoltageDomain.hh" +#include "sim/sim_object.hh" + +/** + * A VoltageDomain is used to group clock domains that operate under + * the same voltage. The class provides methods for setting and + * getting the voltage. + */ +class VoltageDomain : public SimObject +{ + + private: + + /** + * The voltage of the domain expressed in Volts + */ + double _voltage; + + public: + + typedef VoltageDomainParams Params; + VoltageDomain(const Params *p); + + /** + * Get the current volate. + * + * @return Voltage of the domain + */ + inline double voltage() const { return _voltage; } + + /** + * Set the voltage of the domain. + * + * @param Voltage value to be set + */ + void voltage(double voltage); + +}; + +#endif |