AppleWin/source/Uthernet2.h

152 lines
5.0 KiB
C
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#pragma once
#include "Card.h"
#include <vector>
#include <map>
class NetworkBackend;
struct MACAddress;
struct Socket
{
#ifdef _MSC_VER
typedef SOCKET socket_t;
#else
typedef int socket_t;
#endif
uint16_t transmitBase;
uint16_t transmitSize;
uint16_t receiveBase;
uint16_t receiveSize;
uint16_t registerAddress;
uint16_t sn_rx_wr;
uint16_t sn_rx_rsr;
bool isOpen() const;
void clearFD();
void setStatus(const uint8_t status);
void setFD(const socket_t fd, const uint8_t status);
void process();
socket_t getFD() const;
uint8_t getStatus() const;
uint8_t getHeaderSize() const;
// both functions work in "data" space, the header size is added internally
bool isThereRoomFor(const size_t len) const;
uint16_t getFreeRoom() const;
void SaveSnapshot(YamlSaveHelper &yamlSaveHelper);
bool LoadSnapshot(YamlLoadHelper &yamlLoadHelper);
Socket();
~Socket();
private:
socket_t myFD;
uint8_t mySocketStatus; // aka W5100_SN_SR
uint8_t myHeaderSize;
};
/*
* Documentation from
* http://dserver.macgui.com/Uthernet%20II%20manual%2017%20Nov%2018.pdf
* https://www.wiznet.io/wp-content/uploads/wiznethome/Chip/W5100/Document/W5100_DS_V128E.pdf
* https://www.wiznet.io/wp-content/uploads/wiznethome/Chip/W5100/Document/3150Aplus_5100_ES_V260E.pdf
*/
class Uthernet2 : public Card
{
public:
static const std::string& GetSnapshotCardName();
enum PacketDestination { HOST, BROADCAST, OTHER };
Uthernet2(UINT slot);
virtual ~Uthernet2();
virtual void Destroy(void) {}
virtual void InitializeIO(LPBYTE pCxRomPeripheral);
virtual void Reset(const bool powerCycle);
virtual void Update(const ULONG nExecutedCycles);
virtual void SaveSnapshot(YamlSaveHelper &yamlSaveHelper);
virtual bool LoadSnapshot(YamlLoadHelper &yamlLoadHelper, UINT version);
BYTE IO_C0(WORD programcounter, WORD address, BYTE write, BYTE value, ULONG nCycles);
// global registry functions
static void SetRegistryVirtualDNS(UINT slot, const bool enabled);
static bool GetRegistryVirtualDNS(UINT slot);
private:
bool myVirtualDNSEnabled; // extended virtualisation of DNS (not present in the real U II card)
#ifdef _MSC_VER
int myWSAStartup;
#endif
std::vector<uint8_t> myMemory;
std::vector<Socket> mySockets;
uint8_t myModeRegister;
uint16_t myDataAddress;
std::shared_ptr<NetworkBackend> myNetworkBackend;
// the real Uthernet II card does not have a ARP Cache
// but in the interest of speeding up the emulator
// we introduce one
std::map<uint32_t, MACAddress> myARPCache;
std::map<std::string, uint32_t> myDNSCache;
void getMACAddress(const uint32_t address, const MACAddress * & mac);
void resolveDNS(const size_t i);
void setSocketModeRegister(const size_t i, const uint16_t address, const uint8_t value);
void setTXSizes(const uint16_t address, uint8_t value);
void setRXSizes(const uint16_t address, uint8_t value);
uint16_t getTXDataSize(const size_t i) const;
uint8_t getTXFreeSizeRegister(const size_t i, const size_t shift) const;
uint8_t getRXDataSizeRegister(const size_t i, const size_t shift) const;
void receiveOnePacketRaw();
void receiveOnePacketIPRaw(const size_t i, const size_t lengthOfPayload, const uint8_t * payload, const uint32_t source, const uint8_t protocol, const int len);
void receiveOnePacketMacRaw(const size_t i, const int size, uint8_t * data);
void receiveOnePacketFromSocket(const size_t i);
void receiveOnePacket(const size_t i);
int receiveForMacAddress(const bool acceptAll, const int size, uint8_t * data, PacketDestination & packetDestination);
void sendDataIPRaw(const size_t i, std::vector<uint8_t> &data);
void sendDataMacRaw(const size_t i, std::vector<uint8_t> &data) const;
void sendDataToSocket(const size_t i, std::vector<uint8_t> &data);
void sendData(const size_t i);
void resetRXTXBuffers(const size_t i);
void updateRSR(const size_t i);
void openSystemSocket(const size_t i, const int type, const int protocol, const int status);
void openSocket(const size_t i);
void closeSocket(const size_t i);
void connectSocket(const size_t i);
void setCommandRegister(const size_t i, const uint8_t value);
uint8_t readSocketRegister(const uint16_t address);
uint8_t readValueAt(const uint16_t address);
void autoIncrement();
uint8_t readValue();
void setIPProtocol(const size_t i, const uint16_t address, const uint8_t value);
void setIPTypeOfService(const size_t i, const uint16_t address, const uint8_t value);
void setIPTTL(const size_t i, const uint16_t address, const uint8_t value);
void writeSocketRegister(const uint16_t address, const uint8_t value);
void setModeRegister(const uint16_t address, const uint8_t value);
void writeCommonRegister(const uint16_t address, const uint8_t value);
void writeValueAt(const uint16_t address, const uint8_t value);
void writeValue(const uint8_t value);
};