Move C++ code into cpp/ dir (#941)

- Moved C++ code to cpp/ from src/raspberrypi - Related updates to Makefile, easyinstall.sh, and the github build rules - Removed the native X68k C code in src/x68k from the repo
2026-04-24 07:16:46 +00:00 · 2022-10-25 12:59:30 -07:00
parent 4b109a70b0
commit 08194af424
184 changed files with 11 additions and 4920 deletions
@@ -0,0 +1,119 @@
+//---------------------------------------------------------------------------
+//
+//	SCSI Target Emulator RaSCSI Reloaded
+//	for Raspberry Pi
+//
+//	Copyright (C) 2001-2006 ＰＩ．(ytanaka@ipc-tokai.or.jp)
+//	Copyright (C) 2014-2020 GIMONS
+//	Copyright (C) akuker
+//
+//	Licensed under the BSD 3-Clause License.
+//	See LICENSE file in the project root folder.
+//
+//---------------------------------------------------------------------------
+
+#pragma once
+
+#include "abstract_controller.h"
+#include "os.h"
+#include "scsi.h"
+#include <array>
+
+class PrimaryDevice;
+
+class ScsiController : public AbstractController
+{
+	// For timing adjustments
+	static const unsigned int MIN_EXEC_TIME = 50;
+
+	// Transfer period factor (limited to 50 x 4 = 200ns)
+	static const int MAX_SYNC_PERIOD = 50;
+
+	// REQ/ACK offset(limited to 16)
+	static const BYTE MAX_SYNC_OFFSET = 16;
+
+	static const int UNKNOWN_INITIATOR_ID = -1;
+
+	const int DEFAULT_BUFFER_SIZE = 0x1000;
+
+	using scsi_t = struct _scsi_t {
+		// Synchronous transfer
+		bool syncenable;				// Synchronous transfer possible
+		BYTE syncperiod = MAX_SYNC_PERIOD;	// Synchronous transfer period
+		BYTE syncoffset;					// Synchronous transfer offset
+		int syncack;					// Number of synchronous transfer ACKs
+
+		// ATN message
+		bool atnmsg;
+		int msc;
+		std::array<BYTE, 256> msb;
+	};
+
+public:
+
+	// Maximum number of logical units
+	static const int LUN_MAX;
+
+	ScsiController(shared_ptr<BUS>, int);
+	~ScsiController() override = default;
+
+	void Reset() override;
+
+	BUS::phase_t Process(int) override;
+
+	int GetEffectiveLun() const override;
+
+	void Error(scsi_defs::sense_key sense_key, scsi_defs::asc asc = scsi_defs::asc::NO_ADDITIONAL_SENSE_INFORMATION,
+			scsi_defs::status status = scsi_defs::status::CHECK_CONDITION) override;
+
+	int GetInitiatorId() const override { return initiator_id; }
+
+	// Phases
+	void BusFree() override;
+	void Selection() override;
+	void Command() override;
+	void MsgIn() override;
+	void MsgOut() override;
+	void Status() override;
+	void DataIn() override;
+	void DataOut() override;
+
+	// TODO Make non-virtual private as soon as SysTimer calls do not segfault anymore on a regular PC,
+	// e.g. by using ifdef __arm__. Currently the unit tests require this method to be public.
+	virtual void Execute();
+
+	void ScheduleShutdown(rascsi_shutdown_mode mode) override { shutdown_mode = mode; }
+
+private:
+
+	// Execution start time
+	uint32_t execstart = 0;
+
+	// The initiator ID may be unavailable, e.g. with Atari ACSI and old host adapters
+	int initiator_id = UNKNOWN_INITIATOR_ID;
+
+	// The LUN from the IDENTIFY message
+	int identified_lun = -1;
+
+	// Data transfer
+	void Send();
+	bool XferMsg(int);
+	bool XferIn(vector<BYTE>&);
+	bool XferOut(bool);
+	bool XferOutBlockOriented(bool);
+	void ReceiveBytes();
+
+	void DataOutNonBlockOriented();
+	void Receive();
+
+	void ProcessCommand();
+	void ParseMessage();
+	void ProcessMessage();
+
+	void Sleep();
+
+	scsi_t scsi = {};
+
+	AbstractController::rascsi_shutdown_mode shutdown_mode = AbstractController::rascsi_shutdown_mode::NONE;
+};
+