1/* 2 * Copyright (c) 2013 ARM Limited |
3 * Copyright (c) 2013 Cornell University |
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 --- 21 unchanged lines hidden (view full) --- 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 |
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" |
51 52double 53ClockDomain::voltage() const 54{ 55 return _voltageDomain->voltage(); 56} 57 58SrcClockDomain::SrcClockDomain(const Params *p) : --- 4 unchanged lines hidden (view full) --- 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 |
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) { --- 24 unchanged lines hidden (view full) --- 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 |
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} |