// license:BSD-3-Clause
// copyright-holders:smf
/***************************************************************************
atapihle.h
ATAPI High Level Emulation
***************************************************************************/
#pragma once
#ifndef __ATAPIHLE_H__
#define __ATAPIHLE_H__
#include "atahle.h"
#include "t10spc.h"
class atapi_hle_device : public ata_hle_device,
public virtual t10spc
{
public:
atapi_hle_device(const machine_config &mconfig, device_type type, std::string name, std::string tag, device_t *owner, UINT32 clock,std::string shortname, std::string source);
enum atapi_features_flag_t
{
ATAPI_FEATURES_FLAG_DMA = 0x01,
ATAPI_FEATURES_FLAG_OVL = 0x02
};
enum atapi_interrupt_reason_t
{
ATAPI_INTERRUPT_REASON_CD = 0x01, // 1 = command, 0 = data
ATAPI_INTERRUPT_REASON_IO = 0x02, // 1 = to host, 0 = to device
ATAPI_INTERRUPT_REASON_REL = 0x04, // 1 = bus release
ATAPI_INTERRUPT_REASON_TAG = 0xf8 // command tag
};
enum packet_command_length_t
{
PACKET_COMMAND_LENGTH_12,
PACKET_COMMAND_LENGTH_16
};
enum packet_command_response_t
{
PACKET_COMMAND_RESPONSE_DRQ_3MS,
PACKET_COMMAND_RESPONSE_INTRQ,
PACKET_COMMAND_RESPONSE_DRQ_50US
};
protected:
virtual void device_start() override;
virtual void device_reset() override;
virtual int sector_length() override { return ATAPI_BUFFER_LENGTH; }
virtual void process_buffer() override;
virtual void fill_buffer() override;
virtual bool is_ready() override { return false; }
virtual void signature() override;
virtual void process_command() override;
virtual void finished_command() override;
virtual void identify_packet_device() = 0;
packet_command_length_t packet_command_length();
packet_command_response_t packet_command_response();
private:
void wait_buffer();
int m_packet;
int m_data_size;
static const int ATAPI_BUFFER_LENGTH = 0xf800;
};
#endif