mirror of
https://github.com/akuker/RASCSI.git
synced 2024-05-29 01:41:27 +00:00
45cd5e58d1
* Fixed buster compile-time issue * Host services inherit from ModePageDevice * Call base class * Visibility update * Updated includes * Updated dispatcher * Added TODOs * Logging update * Code cleanup * Use namespace instead of class for ScsiDefs * Renaming * Cleanup * Use dispatcher template in order to remove duplicate code * Updated all dispatchers * Clean up commands * Removed duplicate code * Removed duplicate code * Updated template definition * Fixed typo * Fixed warning * Code cleanup * Device list must be static * Cleanup * Logging update * Added comments * Cleanup * Base class update * SCSIBR is not a subclass of Disk anymore, but of PrimaryDevice * Updated includes * Fixed compile-time issue on the Pi * Header file cleanup * Interface cleanup * Removed wrong override * include file cleanup * Removed obsolete usage of streams * Removed more stream usages * Stream usage cleanup * Include cleanup * Renaming * Include cleanup * Interface update
143 lines
4.3 KiB
C++
143 lines
4.3 KiB
C++
//---------------------------------------------------------------------------
|
||
//
|
||
// SCSI Target Emulator RaSCSI (*^..^*)
|
||
// for Raspberry Pi
|
||
//
|
||
// Copyright (C) 2020 akuker
|
||
// Copyright (C) 2014-2020 GIMONS
|
||
// Copyright (C) 2001-2006 ＰＩ．(ytanaka@ipc-tokai.or.jp)
|
||
//
|
||
// Licensed under the BSD 3-Clause License.
|
||
// See LICENSE file in the project root folder.
|
||
//
|
||
// [ Emulation of the DaynaPort SCSI Link Ethernet interface ]
|
||
//
|
||
// This design is derived from the SLINKCMD.TXT file, as well as David Kuder's
|
||
// Tiny SCSI Emulator
|
||
// - SLINKCMD: http://www.bitsavers.org/pdf/apple/scsi/dayna/daynaPORT/SLINKCMD.TXT
|
||
// - Tiny SCSI : https://hackaday.io/project/18974-tiny-scsi-emulator
|
||
//
|
||
// Special thanks to @PotatoFi for loaning me his Farallon EtherMac for
|
||
// this development. (Farallon's EtherMac is a re-branded DaynaPort
|
||
// SCSI/Link-T).
|
||
//
|
||
// This does NOT include the file system functionality that is present
|
||
// in the Sharp X68000 host bridge.
|
||
//
|
||
// Note: This requires the DaynaPort SCSI Link driver.
|
||
//---------------------------------------------------------------------------
|
||
#pragma once
|
||
|
||
#include "os.h"
|
||
#include "disk.h"
|
||
#include "ctapdriver.h"
|
||
#include <map>
|
||
#include <string>
|
||
|
||
//===========================================================================
|
||
//
|
||
// DaynaPort SCSI Link
|
||
//
|
||
//===========================================================================
|
||
class SCSIDaynaPort: public Disk
|
||
{
|
||
|
||
public:
|
||
SCSIDaynaPort();
|
||
~SCSIDaynaPort();
|
||
|
||
bool Init(const map<string, string>&) override;
|
||
void Open(const Filepath& path) override;
|
||
|
||
// Commands
|
||
int Inquiry(const DWORD *cdb, BYTE *buffer) override;
|
||
int Read(const DWORD *cdb, BYTE *buf, uint64_t block) override;
|
||
bool Write(const DWORD *cdb, const BYTE *buf, DWORD block) override;
|
||
int WriteCheck(DWORD block) override; // WRITE check
|
||
|
||
int RetrieveStats(const DWORD *cdb, BYTE *buffer);
|
||
bool EnableInterface(const DWORD *cdb);
|
||
|
||
void SetMacAddr(const DWORD *cdb, BYTE *buffer); // Set MAC address
|
||
|
||
void TestUnitReady(SASIDEV *) override;
|
||
void Read6(SASIDEV *) override;
|
||
void Write6(SASIDEV *) override;
|
||
void RetrieveStatistics(SASIDEV *);
|
||
void SetInterfaceMode(SASIDEV *);
|
||
void SetMcastAddr(SASIDEV *);
|
||
void EnableInterface(SASIDEV *);
|
||
|
||
bool Dispatch(SCSIDEV *) override;
|
||
|
||
const int DAYNAPORT_BUFFER_SIZE = 0x1000000;
|
||
|
||
static const BYTE CMD_SCSILINK_STATS = 0x09;
|
||
static const BYTE CMD_SCSILINK_ENABLE = 0x0E;
|
||
static const BYTE CMD_SCSILINK_SET = 0x0C;
|
||
static const BYTE CMD_SCSILINK_SETMODE = 0x80;
|
||
static const BYTE CMD_SCSILINK_SETMAC = 0x40;
|
||
|
||
// When we're reading the Linux tap device, most of the messages will not be for us, so we
|
||
// need to filter through those. However, we don't want to keep re-reading the packets
|
||
// indefinitely. So, we'll pick a large-ish number that will cause the emulated DaynaPort
|
||
// to respond with "no data" after MAX_READ_RETRIES tries.
|
||
static const int MAX_READ_RETRIES = 50;
|
||
|
||
// The READ response has a header which consists of:
|
||
// 2 bytes - payload size
|
||
// 4 bytes - status flags
|
||
static const DWORD DAYNAPORT_READ_HEADER_SZ = 2 + 4;
|
||
|
||
private:
|
||
typedef Disk super;
|
||
|
||
Dispatcher<SCSIDaynaPort> dispatcher;
|
||
|
||
typedef struct __attribute__((packed)) {
|
||
BYTE operation_code;
|
||
BYTE misc_cdb_information;
|
||
BYTE logical_block_address;
|
||
uint16_t length;
|
||
BYTE format;
|
||
} scsi_cmd_daynaport_write_t;
|
||
|
||
enum read_data_flags_t : uint32_t {
|
||
e_no_more_data = 0x00000000,
|
||
e_more_data_available = 0x00000001,
|
||
e_dropped_packets = 0xFFFFFFFF,
|
||
};
|
||
|
||
typedef struct __attribute__((packed)) {
|
||
uint32_t length;
|
||
read_data_flags_t flags;
|
||
BYTE pad;
|
||
BYTE data[ETH_FRAME_LEN + sizeof(uint32_t)]; // Frame length + 4 byte CRC
|
||
} scsi_resp_read_t;
|
||
|
||
typedef struct __attribute__((packed)) {
|
||
BYTE mac_address[6];
|
||
uint32_t frame_alignment_errors;
|
||
uint32_t crc_errors;
|
||
uint32_t frames_lost;
|
||
} scsi_resp_link_stats_t;
|
||
|
||
scsi_resp_link_stats_t m_scsi_link_stats = {
|
||
.mac_address = { 0x00, 0x80, 0x19, 0x10, 0x98, 0xE3 },//MAC address of @PotatoFi's DayanPort
|
||
.frame_alignment_errors = 0,
|
||
.crc_errors = 0,
|
||
.frames_lost = 0,
|
||
};
|
||
|
||
const BYTE m_daynacom_mac_prefix[3] = { 0x00, 0x80, 0x19 };
|
||
|
||
CTapDriver *m_tap;
|
||
// TAP driver
|
||
bool m_bTapEnable;
|
||
// TAP valid flag
|
||
BYTE m_mac_addr[6];
|
||
// MAC Address
|
||
static const BYTE m_bcast_addr[6];
|
||
static const BYTE m_apple_talk_addr[6];
|
||
};
|