RASCSI/cpp/hal/gpiobus_virtual.h

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//---------------------------------------------------------------------------
//
// SCSI Target Emulator PiSCSI
// for Raspberry Pi
//
// Powered by XM6 TypeG Technology.
// Copyright (C) 2016-2020 GIMONS
// [ GPIO-SCSI bus ]
//
//---------------------------------------------------------------------------
#pragma once
#include "hal/data_sample_raspberry.h"
#include "hal/gpiobus.h"
#include "shared/log.h"
#include "shared/scsi.h"
#include <map>
#include <semaphore.h>
//---------------------------------------------------------------------------
//
// Class definition
//
//---------------------------------------------------------------------------
class GPIOBUS_Virtual final : public GPIOBUS
{
public:
// Basic Functions
GPIOBUS_Virtual() = default;
~GPIOBUS_Virtual() override = default;
// Destructor
bool Init(mode_e mode = mode_e::TARGET) override;
// // Initialization
void Reset() override;
// Reset
void Cleanup() override;
// Cleanup
//---------------------------------------------------------------------------
//
// Bus signal acquisition
//
//---------------------------------------------------------------------------
uint32_t Acquire() override;
void SetENB(bool ast) override;
// Set ENB signal
bool GetBSY() const override;
// Get BSY signal
void SetBSY(bool ast) override;
// Set BSY signal
bool GetSEL() const override;
// Get SEL signal
void SetSEL(bool ast) override;
// Set SEL signal
bool GetATN() const override;
// Get ATN signal
void SetATN(bool ast) override;
// Set ATN signal
bool GetACK() const override;
// Get ACK signal
void SetACK(bool ast) override;
// Set ACK signal
bool GetACT() const override;
// Get ACT signal
void SetACT(bool ast) override;
// Set ACT signal
bool GetRST() const override;
// Get RST signal
void SetRST(bool ast) override;
// Set RST signal
bool GetMSG() const override;
// Get MSG signal
void SetMSG(bool ast) override;
// Set MSG signal
bool GetCD() const override;
// Get CD signal
void SetCD(bool ast) override;
// Set CD signal
bool GetIO() override;
// Get IO signal
void SetIO(bool ast) override;
// Set IO signal
bool GetREQ() const override;
// Get REQ signal
void SetREQ(bool ast) override;
// Set REQ signal
bool GetDP() const override;
bool WaitREQ(bool ast) override
{
return WaitSignal(PIN_REQ, ast);
}
bool WaitACK(bool ast) override
{
return WaitSignal(PIN_ACK, ast);
}
uint8_t GetDAT() override;
// Get DAT signal
void SetDAT(uint8_t dat) override;
// Set DAT signal
private:
// SCSI I/O signal control
void MakeTable() override;
// Create work data
void SetControl(int pin, bool ast) override;
// Set Control Signal
void SetMode(int pin, int mode) override;
// Set SCSI I/O mode
int GetMode(int pin) override
{
// Not implemented (or needed for thist gpio bus type)
(void)pin;
return -1;
}
bool GetSignal(int pin) const override;
// Get SCSI input signal value
void SetSignal(int pin, bool ast) override;
// Wait for a signal to change
// Interrupt control
void DisableIRQ() override;
// IRQ Disabled
void EnableIRQ() override;
// IRQ Enabled
// GPIO pin functionality settings
void PinConfig(int pin, int mode) override
{
(void)pin;
(void)mode;
}
// GPIO pin direction setting
void PullConfig(int pin, int mode) override
{
(void)mode; // Put these in opposite order so Sonar doesn't complain
(void)pin; // That PinConfig and PullConfig are identical
}
// GPIO pin pull up/down resistor setting
void PinSetSignal(int pin, bool ast) override;
// Set GPIO output signal
void DrvConfig(uint32_t drive) override;
// Set GPIO drive strength
array<int, 19> SignalTable;
shared_ptr<uint32_t> signals; // All bus signals
unique_ptr<DataSample> GetSample(uint64_t timestamp) override
{
return make_unique<DataSample_Raspberry>(*signals, timestamp);
}
#ifdef SHARED_MEMORY_GPIO
inline static const string SHARED_MEM_MUTEX_NAME = "/sem-mutex";
inline static const string SHARED_MEM_NAME = "/posix-shared-mem-example";
sem_t *mutex_sem, *buffer_count_sem, *spool_signal_sem;
int fd_shm, fd_log;
#endif
};