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/* -*- mode: C++; tab-width: 4 -*- */
/* ===================================================================== *\
Copyright (c) 1998-2001 Palm, Inc. or its subsidiaries.
All rights reserved.
This file is part of the Palm OS Emulator.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
\* ===================================================================== */
#ifndef EmUARTDragonball_h
#define EmUARTDragonball_h
#include "EmThreadSafeQueue.h" // EmByteQueue
class EmTransport;
class SessionFile;
class EmUARTDragonball
{
public:
enum UART_Type
{
kUART_Dragonball,
kUART_DragonballEZ,
kUART_DragonballVZ,
kUART_DragonballSZ
};
struct State
{
State (UART_Type type) { UART_TYPE = type; }
UART_Type UART_TYPE;
// + = Supported
// = Unsupported
// -> = Input value
// <- = Output value
// UART control register bits
// These are all values the user sets; we just look at them.
/* + -> */ unsigned int UART_ENABLE:1;
/* + -> */ unsigned int RX_ENABLE:1;
/* + -> */ unsigned int TX_ENABLE:1;
/* -> */ unsigned int RX_CLK_CONT:1;
/* + -> */ unsigned int PARITY_EN:1;
/* + -> */ unsigned int ODD_EVEN:1;
/* + -> */ unsigned int STOP_BITS:1;
/* + -> */ unsigned int CHAR8_7:1;
/* -> */ unsigned int GPIO_DELTA_ENABLE:1; // 68328 only
/* -> */ unsigned int OLD_ENABLE:1; // 68EZ328 only
/* -> */ unsigned int CTS_DELTA_ENABLE:1;
/* + -> */ unsigned int RX_FULL_ENABLE:1;
/* + -> */ unsigned int RX_HALF_ENABLE:1;
/* + -> */ unsigned int RX_RDY_ENABLE:1;
/* + -> */ unsigned int TX_EMPTY_ENABLE:1;
/* + -> */ unsigned int TX_HALF_ENABLE:1;
/* + -> */ unsigned int TX_AVAIL_ENABLE:1;
// Baud control register bits
// These are all values the user sets; we just look at them.
/* -> */ unsigned int GPIO_DELTA:1; // 68328 only
/* -> */ unsigned int GPIO:1; // 68328 only
/* -> */ unsigned int GPIO_DIR:1; // 68328 only
/* -> */ unsigned int GPIO_SRC:1; // 68328 only
/* -> */ unsigned int UCLK_DIR:1; // 68EZ328 only
/* -> */ unsigned int BAUD_SRC:1;
/* + -> */ unsigned int DIVIDE;
/* + -> */ unsigned int PRESCALER;
// Receive register bits
// These are all input bits; we set them, not the user.
/* + <- */ unsigned int RX_FIFO_FULL:1;
/* + <- */ unsigned int RX_FIFO_HALF:1;
/* + <- */ unsigned int DATA_READY:1;
/* <- */ unsigned int OLD_DATA:1; // 68EZ328 only
/* <- */ unsigned int OVRUN:1;
/* <- */ unsigned int FRAME_ERROR:1;
/* <- */ unsigned int BREAK:1;
/* <- */ unsigned int PARITY_ERROR:1;
/* + <- */ unsigned int RX_DATA;
// Transmitter register bits
// The user sets TX_DATA, IGNORE_CTS, and SEND_BREAK.
// We set the rest.
/* + <- */ unsigned int TX_FIFO_EMPTY:1;
/* + <- */ unsigned int TX_FIFO_HALF:1;
/* + <- */ unsigned int TX_AVAIL:1;
/* -> */ unsigned int SEND_BREAK:1;
/* + -> */ unsigned int IGNORE_CTS:1;
/* + <- */ unsigned int BUSY:1; // 68EZ328 only
/* + <- */ unsigned int CTS_STATUS:1;
/* <- */ unsigned int CTS_DELTA:1;
/* + -> */ unsigned int TX_DATA;
// Misc register bits
// These are all values the user sets; we just look at them.
/* -> */ unsigned int BAUD_TEST:1; // 68EZ328 only
/* -> */ unsigned int CLK_SRC:1;
/* -> */ unsigned int FORCE_PERR:1;
/* + -> */ unsigned int LOOP:1;
/* -> */ unsigned int BAUD_RESET:1; // 68EZ328 only
/* -> */ unsigned int IR_TEST:1; // 68EZ328 only
/* + -> */ unsigned int RTS_CONT:1;
/* + -> */ unsigned int RTS:1;
/* + -> */ unsigned int IRDA_ENABLE:1;
/* -> */ unsigned int IRDA_LOOP:1;
/* -> */ unsigned int RX_POL:1; // 68EZ328 only
/* -> */ unsigned int TX_POL:1; // 68EZ328 only
// Level Marker Interrupt
/* + -> */ unsigned int TXFIFO_LEVEL_MARKER:4; // 68SZ328 only
/* + -> */ unsigned int RXFIFO_LEVEL_MARKER:4; // 68SZ328 only
};
EmUARTDragonball (UART_Type, int uartNum);
~EmUARTDragonball (void);
void StateChanged (State&, Bool sendRxData);
void UpdateState (State&, Bool refreshRxData);
void TransmitTxFIFO (EmTransport*);
void ReceiveRxFIFO (EmTransport*);
EmTransport* GetTransport (void);
private:
int PrvFIFOSize (Bool forRX);
int PrvLevelMarker (Bool forRX);
private:
int fUARTNum;
State fState;
EmByteQueue fRxFIFO;
EmByteQueue fTxFIFO;
};
#endif /* EmUARTDragonball_h */
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