mirror of
https://github.com/akuker/RASCSI.git
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69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
//---------------------------------------------------------------------------
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//
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// SCSI Target Emulator PiSCSI
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// for Raspberry Pi
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//
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// Powered by XM6 TypeG Technology.
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// Copyright (C) 2016-2020 GIMONS
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// Copyright (C) 2022 akuker
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//
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// [ High resolution timer ]
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//
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//---------------------------------------------------------------------------
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#pragma once
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#include "systimer.h"
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#include <stdint.h>
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//===========================================================================
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//
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// System timer
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//
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//===========================================================================
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class SysTimer_Raspberry : public PlatformSpecificTimer
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{
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public:
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// Default constructor
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SysTimer_Raspberry() = default;
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// Default destructor
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~SysTimer_Raspberry() override = default;
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// Initialization
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void Init() override;
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// Get system timer low byte
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uint32_t GetTimerLow() override;
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// Sleep for N nanoseconds
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void SleepNsec(uint32_t nsec) override;
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// Sleep for N microseconds
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void SleepUsec(uint32_t usec) override;
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private:
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// System timer address
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static volatile uint32_t *systaddr;
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// ARM timer address
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static volatile uint32_t *armtaddr;
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// Core frequency
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static volatile uint32_t corefreq;
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const static int ARMT_LOAD = 0;
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const static int ARMT_VALUE = 1;
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const static int ARMT_CTRL = 2;
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const static int ARMT_CLRIRQ = 3;
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const static int ARMT_RAWIRQ = 4;
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const static int ARMT_MSKIRQ = 5;
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const static int ARMT_RELOAD = 6;
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const static int ARMT_PREDIV = 7;
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const static int ARMT_FREERUN = 8;
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const static int SYST_CS = 0;
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const static int SYST_CLO = 1;
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const static int SYST_CHI = 2;
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const static int SYST_C0 = 3;
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const static int SYST_C1 = 4;
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const static int SYST_C2 = 5;
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const static int SYST_C3 = 6;
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const static uint32_t SYST_OFFSET = 0x00003000;
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const static uint32_t ARMT_OFFSET = 0x0000B400;
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};
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