mirror of https://github.com/akuker/RASCSI.git
134 lines
3.8 KiB
C++
134 lines
3.8 KiB
C++
//---------------------------------------------------------------------------
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//
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// SCSI Target Emulator RaSCSI Reloaded
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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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// [ GPIO-SCSI bus ]
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//
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//---------------------------------------------------------------------------
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#pragma once
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#include <map>
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#include "config.h"
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#include "hal/gpiobus.h"
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#include "hal/board_type.h"
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#include "log.h"
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#include "scsi.h"
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//---------------------------------------------------------------------------
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//
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// Class definition
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//
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//---------------------------------------------------------------------------
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class GPIOBUS_Allwinner : public GPIOBUS
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{
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public:
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// Basic Functions
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GPIOBUS_Allwinner() = default;
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~GPIOBUS_Allwinner() override = default;
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// Destructor
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bool Init(mode_e mode = mode_e::TARGET) override;
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// Initialization
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void Reset() override;
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// Reset
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void Cleanup() override;
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// Cleanup
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//---------------------------------------------------------------------------
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//
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// Bus signal acquisition
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//
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//---------------------------------------------------------------------------
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uint32_t Acquire() override;
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BYTE GetDAT() override;
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// Get DAT signal
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void SetDAT(BYTE dat) override;
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// Set DAT signal
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protected:
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// SCSI I/O signal control
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void MakeTable() override;
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// Create work data
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void SetControl(int pin, bool ast) override;
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// Set Control Signal
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void SetMode(int pin, int mode) override;
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// Set SCSI I/O mode
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bool GetSignal(int pin) const override;
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// Get SCSI input signal value
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void SetSignal(int pin, bool ast) override;
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// Set SCSI output signal value
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bool WaitSignal(int pin, int ast) override;
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// Wait for a signal to change
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// Interrupt control
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void DisableIRQ() override;
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// IRQ Disabled
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void EnableIRQ() override;
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// IRQ Enabled
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// GPIO pin functionality settings
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void PinConfig(int pin, int mode) override;
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// GPIO pin direction setting
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void PullConfig(int pin, int mode) override;
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// GPIO pin pull up/down resistor setting
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void PinSetSignal(int pin, bool ast) override;
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// Set GPIO output signal
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void DrvConfig(DWORD drive) override;
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// Set GPIO drive strength
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// Map the physical pin number to the logical GPIO number
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const static std::map<board_type::pi_physical_pin_e, int> phys_to_gpio_map;
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#if !defined(__x86_64__) && !defined(__X86__)
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uint32_t baseaddr = 0; // Base address
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#endif
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volatile uint32_t *gpio = nullptr; // GPIO register
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volatile uint32_t *pads = nullptr; // PADS register
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#if !defined(__x86_64__) && !defined(__X86__)
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volatile uint32_t *level = nullptr; // GPIO input level
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#endif
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volatile uint32_t *irpctl = nullptr; // Interrupt control register
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volatile uint32_t irptenb; // Interrupt enabled state
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volatile uint32_t *qa7regs = nullptr; // QA7 register
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volatile int tintcore; // Interupt control target CPU.
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volatile uint32_t tintctl; // Interupt control
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volatile uint32_t giccpmr; // GICC priority setting
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#if !defined(__x86_64__) && !defined(__X86__)
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volatile uint32_t *gicd = nullptr; // GIC Interrupt distributor register
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#endif
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volatile uint32_t *gicc = nullptr; // GIC CPU interface register
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array<uint32_t, 4> gpfsel; // GPFSEL0-4 backup values
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uint32_t signals = 0; // All bus signals
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#ifdef USE_SEL_EVENT_ENABLE
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struct gpioevent_request selevreq = {}; // SEL signal event request
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int epfd; // epoll file descriptor
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#endif // USE_SEL_EVENT_ENABLE
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#if SIGNAL_CONTROL_MODE == 0
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array<array<uint32_t, 256>, 3> tblDatMsk; // Data mask table
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array<array<uint32_t, 256>, 3> tblDatSet; // Data setting table
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#else
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array<uint32_t, 256> tblDatMsk = {}; // Data mask table
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array<uint32_t, 256> tblDatSet = {}; // Table setting table
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#endif
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};
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