mirror of
https://github.com/akuker/RASCSI.git
synced 2024-12-11 18:49:24 +00:00
69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
//---------------------------------------------------------------------------
|
|
//
|
|
// SCSI Target Emulator PiSCSI
|
|
// for Raspberry Pi
|
|
//
|
|
// Powered by XM6 TypeG Technology.
|
|
// Copyright (C) 2016-2020 GIMONS
|
|
// Copyright (C) 2022 akuker
|
|
//
|
|
// [ High resolution timer ]
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
#pragma once
|
|
|
|
#include "systimer.h"
|
|
#include <stdint.h>
|
|
|
|
//===========================================================================
|
|
//
|
|
// System timer
|
|
//
|
|
//===========================================================================
|
|
class SysTimer_Raspberry : public PlatformSpecificTimer
|
|
{
|
|
public:
|
|
// Default constructor
|
|
SysTimer_Raspberry() = default;
|
|
// Default destructor
|
|
~SysTimer_Raspberry() override = default;
|
|
// Initialization
|
|
void Init() override;
|
|
// Get system timer low byte
|
|
uint32_t GetTimerLow() override;
|
|
// Sleep for N nanoseconds
|
|
void SleepNsec(uint32_t nsec) override;
|
|
// Sleep for N microseconds
|
|
void SleepUsec(uint32_t usec) override;
|
|
|
|
private:
|
|
// System timer address
|
|
static volatile uint32_t *systaddr;
|
|
// ARM timer address
|
|
static volatile uint32_t *armtaddr;
|
|
// Core frequency
|
|
static volatile uint32_t corefreq;
|
|
|
|
const static int ARMT_LOAD = 0;
|
|
const static int ARMT_VALUE = 1;
|
|
const static int ARMT_CTRL = 2;
|
|
const static int ARMT_CLRIRQ = 3;
|
|
const static int ARMT_RAWIRQ = 4;
|
|
const static int ARMT_MSKIRQ = 5;
|
|
const static int ARMT_RELOAD = 6;
|
|
const static int ARMT_PREDIV = 7;
|
|
const static int ARMT_FREERUN = 8;
|
|
|
|
const static int SYST_CS = 0;
|
|
const static int SYST_CLO = 1;
|
|
const static int SYST_CHI = 2;
|
|
const static int SYST_C0 = 3;
|
|
const static int SYST_C1 = 4;
|
|
const static int SYST_C2 = 5;
|
|
const static int SYST_C3 = 6;
|
|
|
|
const static uint32_t SYST_OFFSET = 0x00003000;
|
|
const static uint32_t ARMT_OFFSET = 0x0000B400;
|
|
};
|