1/* |
2 * Copyright (c) 2010-2011,2018 ARM Limited |
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 --- 35 unchanged lines hidden (view full) --- 46#include "params/CpuLocalTimer.hh" 47 48/** @file 49 * This implements the cpu local timer from the Cortex-A9 MPCore 50 * Technical Reference Manual rev r2p2 (ARM DDI 0407F) 51 */ 52 53class BaseGic; |
54class ArmInterruptPin; |
55 56class CpuLocalTimer : public BasicPioDevice 57{ 58 protected: 59 class Timer : public Serializable 60 { 61 62 public: --- 29 unchanged lines hidden (view full) --- 92 EndBitUnion(WatchdogCtrl) 93 94 protected: 95 std::string _name; 96 97 /** Pointer to parent class */ 98 CpuLocalTimer *parent; 99 |
100 /** Interrupt to cause/clear */ 101 ArmInterruptPin *intTimer; 102 ArmInterruptPin *intWatchdog; |
103 |
104 /** Control register as specified above */ 105 TimerCtrl timerControl; 106 WatchdogCtrl watchdogControl; 107 108 /** If timer has caused an interrupt. This is irrespective of 109 * interrupt enable */ 110 bool rawIntTimer; 111 bool rawIntWatchdog; --- 16 unchanged lines hidden (view full) --- 128 void watchdogAtZero(); 129 EventFunctionWrapper watchdogZeroEvent; 130 public: 131 /** Restart the counter ticking at val 132 * @param val the value to start at */ 133 void restartTimerCounter(uint32_t val); 134 void restartWatchdogCounter(uint32_t val); 135 |
136 Timer(const std::string &name, 137 CpuLocalTimer* _parent, 138 ArmInterruptPin* int_timer, 139 ArmInterruptPin* int_watchdog); |
140 141 std::string name() const { return _name; } 142 143 /** Handle read for a single timer */ 144 void read(PacketPtr pkt, Addr daddr); 145 146 /** Handle write for a single timer */ 147 void write(PacketPtr pkt, Addr daddr); 148 149 void serialize(CheckpointOut &cp) const override; 150 void unserialize(CheckpointIn &cp) override; 151 152 friend class CpuLocalTimer; 153 }; 154 |
155 /** Pointer to the GIC for causing an interrupt */ 156 BaseGic *gic; 157 158 /** Timers that do the actual work */ |
159 std::vector<std::unique_ptr<Timer>> localTimer; |
160 161 public: 162 typedef CpuLocalTimerParams Params; 163 const Params * 164 params() const 165 { 166 return dynamic_cast<const Params *>(_params); 167 } 168 /** 169 * The constructor for RealView just registers itself with the MMU. 170 * @param p params structure 171 */ 172 CpuLocalTimer(Params *p); 173 |
174 /** Inits the local timers */ 175 void init() override; 176 |
177 /** 178 * Handle a read to the device 179 * @param pkt The memory request. 180 * @return Returns latency of device read 181 */ 182 Tick read(PacketPtr pkt) override; 183 184 /** --- 13 unchanged lines hidden --- |