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quakeforge-old/uquake/net_comx.c
Jeff Teunissen c3f5581b0a Created new subdir: uquake. Pick your favorite U word for the meaning -- 
Unchained, Ultimate, Ultra, Up Yours, Underworld, Underground, Unified,
Unity, etc. You know the drill.

This takes care of the "standalone" problem with the wrong name, and the
recent snafu with multiple developers working on the same files
simultaneously...expect me (and probably others) to start locking dirs when
updates are taking place.

And yes, this update is really as large as it looks. Software only at the
moment, but I will have the makefile updated to build the GL builds as
well.
1999-12-26 13:51:52 +00:00

1285 lines
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/*
Copyright (C) 1996-1997 Id Software, Inc.
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// net_comx.c
#include <dos.h>
#include <dpmi.h>
#define NUM_COM_PORTS 2
#define ERR_TTY_LINE_STATUS -1
#define ERR_TTY_MODEM_STATUS -2
#define ERR_TTY_NODATA -3
#define QUEUESIZE 8192
#define QUEUEMASK (QUEUESIZE - 1)
typedef struct
{
volatile int head;
volatile int tail;
volatile byte data[QUEUESIZE];
} queue;
#define FULL(q) (q.head == ((q.tail-1) & QUEUEMASK))
#define EMPTY(q) (q.tail == q.head)
#define ENQUEUE(q,b) (q.data[q.head] = b, q.head = (q.head + 1) & QUEUEMASK)
#define DEQUEUE(q,b) (b = q.data[q.tail], q.tail = (q.tail + 1) & QUEUEMASK)
extern cvar_t config_com_port;
extern cvar_t config_com_irq;
extern cvar_t config_com_baud;
extern cvar_t config_com_modem;
extern cvar_t config_modem_dialtype;
extern cvar_t config_modem_clear;
extern cvar_t config_modem_init;
extern cvar_t config_modem_hangup;
extern int m_return_state;
extern int m_state;
extern qboolean m_return_onerror;
extern char m_return_reason[32];
// 8250, 16550 definitions
#define TRANSMIT_HOLDING_REGISTER 0x00
#define RECEIVE_BUFFER_REGISTER 0x00
#define INTERRUPT_ENABLE_REGISTER 0x01
#define IER_RX_DATA_READY 0x01
#define IER_TX_HOLDING_REGISTER_EMPTY 0x02
#define IER_LINE_STATUS 0x04
#define IER_MODEM_STATUS 0x08
#define INTERRUPT_ID_REGISTER 0x02
#define IIR_MODEM_STATUS_INTERRUPT 0x00
#define IIR_TX_HOLDING_REGISTER_INTERRUPT 0x02
#define IIR_RX_DATA_READY_INTERRUPT 0x04
#define IIR_LINE_STATUS_INTERRUPT 0x06
#define IIR_FIFO_TIMEOUT 0x0c
#define IIR_FIFO_ENABLED 0xc0
#define FIFO_CONTROL_REGISTER 0x02
#define FCR_FIFO_ENABLE 0x01
#define FCR_RCVR_FIFO_RESET 0x02
#define FCR_XMIT_FIFO_RESET 0x04
#define FCR_TRIGGER_01 0x00
#define FCR_TRIGGER_04 0x40
#define FCR_TRIGGER_08 0x80
#define FCR_TRIGGER_16 0xc0
#define LINE_CONTROL_REGISTER 0x03
#define LCR_DATA_BITS_5 0x00
#define LCR_DATA_BITS_6 0x01
#define LCR_DATA_BITS_7 0x02
#define LCR_DATA_BITS_8 0x03
#define LCR_STOP_BITS_1 0x00
#define LCR_STOP_BITS_2 0x04
#define LCR_PARITY_NONE 0x00
#define LCR_PARITY_ODD 0x08
#define LCR_PARITY_EVEN 0x18
#define LCR_PARITY_MARK 0x28
#define LCR_PARITY_SPACE 0x38
#define LCR_SET_BREAK 0x40
#define LCR_DLAB 0x80
#define MODEM_CONTROL_REGISTER 0x04
#define MCR_DTR 0x01
#define MCR_RTS 0x02
#define MCR_OUT1 0x04
#define MCR_OUT2 0x08
#define MCR_LOOPBACK 0x10
#define LINE_STATUS_REGISTER 0x05
#define LSR_DATA_READY 0x01
#define LSR_OVERRUN_ERROR 0x02
#define LSR_PARITY_ERROR 0x04
#define LSR_FRAMING_ERROR 0x08
#define LSR_BREAK_DETECT 0x10
#define LSR_TRANSMITTER_BUFFER_EMPTY 0x20
#define LSR_TRANSMITTER_EMPTY 0x40
#define LSR_FIFO_DIRTY 0x80
#define MODEM_STATUS_REGISTER 0x06
#define MSR_DELTA_CTS 0x01
#define MSR_DELTA_DSR 0x02
#define MSR_DELTA_RI 0x04
#define MSR_DELTA_CD 0x08
#define MSR_CTS 0x10
#define MSR_DSR 0x20
#define MSR_RI 0x40
#define MSR_CD 0x80
#define DIVISOR_LATCH_LOW 0x00
#define DIVISOR_LATCH_HIGH 0x01
#define MODEM_STATUS_MASK (MSR_CTS | MSR_DSR | MSR_CD)
#define UART_AUTO 0
#define UART_8250 1
#define UART_16550 2
static int ISA_uarts[] = {0x3f8,0x2f8,0x3e8,0x2e8};
static int ISA_IRQs[] = {4,3,4,3};
typedef struct ComPort_s
{
struct ComPort_s *next;
_go32_dpmi_seginfo protectedModeInfo;
_go32_dpmi_seginfo protectedModeSaveInfo;
int uart;
volatile byte modemStatus;
byte modemStatusIgnore;
byte lineStatus;
byte bufferUsed;
qboolean enabled;
volatile qboolean statusUpdated;
qboolean useModem;
qboolean modemInitialized;
qboolean modemRang;
qboolean modemConnected;
queue inputQueue;
queue outputQueue;
char clear[16];
char startup[32];
char shutdown[16];
char buffer[128];
PollProcedure poll;
double timestamp;
byte uartType;
byte irq;
byte baudBits;
byte lineControl;
byte portNumber;
char dialType;
char name[4];
} ComPort;
ComPort *portList = NULL;
ComPort *handleToPort [NUM_COM_PORTS];
static int Modem_Command(ComPort *p, char *commandString);
static char *Modem_Response(ComPort *p);
static void Modem_Hangup(ComPort *p);
int TTY_Init(void);
void TTY_Shutdown(void);
int TTY_Open(int serialPortNumber);
void TTY_Close(int handle);
int TTY_ReadByte(int handle);
int TTY_WriteByte(int handle, byte data);
void TTY_Flush(int handle);
int TTY_Connect(int handle, char *host);
void TTY_Disconnect(int handle);
qboolean TTY_CheckForConnection(int handle);
qboolean TTY_IsEnabled(int serialPortNumber);
qboolean TTY_IsModem(int serialPortNumber);
qboolean TTY_OutputQueueIsEmpty(int handle);
static void ISR_8250 (ComPort *p)
{
byte source = 0;
byte b;
disable();
while((source = inportb (p->uart + INTERRUPT_ID_REGISTER) & 0x07) != 1)
{
switch (source)
{
case IIR_RX_DATA_READY_INTERRUPT:
b = inportb (p->uart + RECEIVE_BUFFER_REGISTER);
if (! FULL(p->inputQueue))
{
ENQUEUE (p->inputQueue, b);
}
else
{
p->lineStatus |= LSR_OVERRUN_ERROR;
p->statusUpdated = true;
}
break;
case IIR_TX_HOLDING_REGISTER_INTERRUPT:
if (! EMPTY(p->outputQueue))
{
DEQUEUE (p->outputQueue, b);
outportb (p->uart + TRANSMIT_HOLDING_REGISTER, b);
}
break;
case IIR_MODEM_STATUS_INTERRUPT:
p->modemStatus = (inportb (p->uart + MODEM_STATUS_REGISTER) & MODEM_STATUS_MASK) | p->modemStatusIgnore;
p->statusUpdated = true;
break;
case IIR_LINE_STATUS_INTERRUPT:
p->lineStatus = inportb (p->uart + LINE_STATUS_REGISTER);
p->statusUpdated = true;
break;
}
source = inportb (p->uart + INTERRUPT_ID_REGISTER) & 0x07;
}
outportb (0x20, 0x20);
}
static void COM1_ISR_8250 (void)
{
ISR_8250 (handleToPort[0]);
}
static void COM2_ISR_8250 (void)
{
ISR_8250 (handleToPort[1]);
}
static void ISR_16550 (ComPort *p)
{
int count;
byte source;
byte b;
disable();
while((source = inportb (p->uart + INTERRUPT_ID_REGISTER) & 0x07) != 1)
{
switch (source)
{
case IIR_RX_DATA_READY_INTERRUPT:
do
{
b = inportb (p->uart + RECEIVE_BUFFER_REGISTER);
if (!FULL(p->inputQueue))
{
ENQUEUE (p->inputQueue, b);
}
else
{
p->lineStatus |= LSR_OVERRUN_ERROR;
p->statusUpdated = true;
}
} while (inportb (p->uart + LINE_STATUS_REGISTER) & LSR_DATA_READY);
break;
case IIR_TX_HOLDING_REGISTER_INTERRUPT:
count = 16;
while ((! EMPTY(p->outputQueue)) && count--)
{
DEQUEUE (p->outputQueue, b);
outportb (p->uart + TRANSMIT_HOLDING_REGISTER, b);
}
break;
case IIR_MODEM_STATUS_INTERRUPT:
p->modemStatus = (inportb (p->uart + MODEM_STATUS_REGISTER) & MODEM_STATUS_MASK) | p->modemStatusIgnore;
p->statusUpdated = true;
break;
case IIR_LINE_STATUS_INTERRUPT:
p->lineStatus = inportb (p->uart + LINE_STATUS_REGISTER);
p->statusUpdated = true;
break;
}
source = inportb (p->uart + INTERRUPT_ID_REGISTER) & 0x07;
}
// check for lost IIR_TX_HOLDING_REGISTER_INTERRUPT on 16550a!
if (inportb (p->uart + LINE_STATUS_REGISTER ) & LSR_TRANSMITTER_EMPTY)
{
count = 16;
while ((! EMPTY(p->outputQueue)) && count--)
{
DEQUEUE (p->outputQueue, b);
outportb (p->uart + TRANSMIT_HOLDING_REGISTER, b);
}
}
outportb (0x20, 0x20);
}
static void COM1_ISR_16550 (void)
{
ISR_16550 (handleToPort[0]);
}
static void COM2_ISR_16550 (void)
{
ISR_16550 (handleToPort[1]);
}
void TTY_GetComPortConfig (int portNumber, int *port, int *irq, int *baud, qboolean *useModem)
{
ComPort *p;
p = handleToPort[portNumber];
*port = p->uart;
*irq = p->irq;
*baud = 115200 / p->baudBits;
*useModem = p->useModem;
}
void TTY_SetComPortConfig (int portNumber, int port, int irq, int baud, qboolean useModem)
{
ComPort *p;
float temp;
if (useModem)
{
if (baud == 14400)
baud = 19200;
if (baud == 28800)
baud = 38400;
}
p = handleToPort[portNumber];
p->uart = port;
p->irq = irq;
p->baudBits = 115200 / baud;
p->useModem = useModem;
if (useModem)
temp = 1.0;
else
temp = 0.0;
Cvar_SetValue ("_config_com_port", (float)port);
Cvar_SetValue ("_config_com_irq", (float)irq);
Cvar_SetValue ("_config_com_baud", (float)baud);
Cvar_SetValue ("_config_com_modem", temp);
}
void TTY_GetModemConfig (int portNumber, char *dialType, char *clear, char *init, char *hangup)
{
ComPort *p;
p = handleToPort[portNumber];
*dialType = p->dialType;
Q_strcpy(clear, p->clear);
Q_strcpy(init, p->startup);
Q_strcpy(hangup, p->shutdown);
}
void TTY_SetModemConfig (int portNumber, char *dialType, char *clear, char *init, char *hangup)
{
ComPort *p;
p = handleToPort[portNumber];
p->dialType = dialType[0];
Q_strcpy(p->clear, clear);
Q_strcpy(p->startup, init);
Q_strcpy(p->shutdown, hangup);
p->modemInitialized = false;
Cvar_Set ("_config_modem_dialtype", dialType);
Cvar_Set ("_config_modem_clear", clear);
Cvar_Set ("_config_modem_init", init);
Cvar_Set ("_config_modem_hangup", hangup);
}
static void ResetComPortConfig (ComPort *p)
{
p->useModem = false;
p->uartType = UART_AUTO;
p->uart = ISA_uarts[p->portNumber];
p->irq = ISA_IRQs[p->portNumber];
p->modemStatusIgnore = MSR_CD | MSR_CTS | MSR_DSR;
p->baudBits = 115200 / 57600;
p->lineControl = LCR_DATA_BITS_8 | LCR_STOP_BITS_1 | LCR_PARITY_NONE;
Q_strcpy(p->clear, "ATZ");
Q_strcpy(p->startup, "");
Q_strcpy(p->shutdown, "AT H");
p->modemRang = false;
p->modemConnected = false;
p->statusUpdated = false;
p->outputQueue.head = p->outputQueue.tail = 0;
p->inputQueue.head = p->inputQueue.tail = 0;
}
static void ComPort_Enable(ComPort *p)
{
void (*isr)(void);
int n;
byte b;
if (p->enabled)
{
Con_Printf("Already enabled\n");
return;
}
// disable all UART interrupts
outportb (p->uart + INTERRUPT_ENABLE_REGISTER, 0);
// clear out any buffered uncoming data
while((inportb (p->uart + LINE_STATUS_REGISTER)) & LSR_DATA_READY)
inportb (p->uart + RECEIVE_BUFFER_REGISTER);
// get the current line and modem status
p->modemStatus = (inportb (p->uart + MODEM_STATUS_REGISTER) & MODEM_STATUS_MASK) | p->modemStatusIgnore;
p->lineStatus = inportb (p->uart + LINE_STATUS_REGISTER);
// clear any UART interrupts
do
{
n = inportb (p->uart + INTERRUPT_ID_REGISTER) & 7;
if (n == IIR_RX_DATA_READY_INTERRUPT)
inportb (p->uart + RECEIVE_BUFFER_REGISTER);
} while (!(n & 1));
if (p->uartType == UART_AUTO)
{
outportb (p->uart + FIFO_CONTROL_REGISTER, FCR_FIFO_ENABLE);
b = inportb (p->uart + INTERRUPT_ID_REGISTER);
if ((b & IIR_FIFO_ENABLED) == IIR_FIFO_ENABLED)
p->uartType = UART_16550;
else
p->uartType = UART_8250;
}
// save the old interrupt handler
_go32_dpmi_get_protected_mode_interrupt_vector(p->irq + 8, &p->protectedModeSaveInfo);
if (p->uartType == UART_8250)
{
outportb (p->uart + FIFO_CONTROL_REGISTER, 0);
if (p == handleToPort[0])
isr = COM1_ISR_8250;
else
isr = COM2_ISR_8250;
}
else
{
outportb (p->uart + FIFO_CONTROL_REGISTER, FCR_FIFO_ENABLE | FCR_RCVR_FIFO_RESET | FCR_XMIT_FIFO_RESET | FCR_TRIGGER_08);
if (p == handleToPort[0])
isr = COM1_ISR_16550;
else
isr = COM2_ISR_16550;
}
p->protectedModeInfo.pm_offset = (int)isr;
n = _go32_dpmi_allocate_iret_wrapper(&p->protectedModeInfo);
if (n)
{
Con_Printf("serial: protected mode callback allocation failed\n");
return;
}
// disable interrupts at the processor
disable();
// install our interrupt handlers now
_go32_dpmi_set_protected_mode_interrupt_vector(p->irq + 8, &p->protectedModeInfo);
// enable our interrupt at the PIC
outportb (0x21, inportb (0x21) & ~(1<<p->irq));
// enable interrupts at the processor
enable();
// enable interrupts at the PIC
outportb (0x20, 0xc2);
// set baud rate & line control
outportb (p->uart + LINE_CONTROL_REGISTER, LCR_DLAB | p->lineControl);
outportb (p->uart, p->baudBits);
outportb (p->uart + 1, 0);
outportb (p->uart + LINE_CONTROL_REGISTER, p->lineControl);
// set modem control register & enable uart interrupt generation
outportb(p->uart + MODEM_CONTROL_REGISTER, MCR_OUT2 | MCR_RTS | MCR_DTR);
// enable the individual interrupts at the uart
outportb (p->uart + INTERRUPT_ENABLE_REGISTER, IER_RX_DATA_READY | IER_TX_HOLDING_REGISTER_EMPTY | IER_LINE_STATUS | IER_MODEM_STATUS);
p->enabled = true;
}
static void ComPort_Disable(ComPort *p)
{
if (!p->enabled)
{
Con_Printf("Already disabled\n");
return;
}
// disable interrupts at the uart
outportb (p->uart + INTERRUPT_ENABLE_REGISTER, 0);
// disable our interrupt at the PIC
outportb (0x21, inportb (0x21) | (1<<p->irq));
// disable interrupts at the processor
disable();
// restore the old interrupt handler
_go32_dpmi_set_protected_mode_interrupt_vector(p->irq + 8, &p->protectedModeSaveInfo);
_go32_dpmi_free_iret_wrapper(&p->protectedModeInfo);
// enable interrupts at the processor
enable();
p->enabled = false;
}
static int CheckStatus (ComPort *p)
{
int ret = 0;
if (p->statusUpdated)
{
p->statusUpdated = false;
if (p->lineStatus & (LSR_OVERRUN_ERROR | LSR_PARITY_ERROR | LSR_FRAMING_ERROR | LSR_BREAK_DETECT))
{
if (p->lineStatus & LSR_OVERRUN_ERROR)
Con_DPrintf ("Serial overrun error\n");
if (p->lineStatus & LSR_PARITY_ERROR)
Con_DPrintf ("Serial parity error\n");
if (p->lineStatus & LSR_FRAMING_ERROR)
Con_DPrintf ("Serial framing error\n");
if (p->lineStatus & LSR_BREAK_DETECT)
Con_DPrintf ("Serial break detect\n");
ret = ERR_TTY_LINE_STATUS;
}
if ((p->modemStatus & MODEM_STATUS_MASK) != MODEM_STATUS_MASK)
{
if (!(p->modemStatus & MSR_CTS))
Con_Printf ("Serial lost CTS\n");
if (!(p->modemStatus & MSR_DSR))
Con_Printf ("Serial lost DSR\n");
if (!(p->modemStatus & MSR_CD))
Con_Printf ("Serial lost Carrier\n");
ret = ERR_TTY_MODEM_STATUS;
}
}
return ret;
}
static void Modem_Init(ComPort *p)
{
double start;
char *response;
Con_Printf ("Initializing modem...\n");
// write 0 to MCR, wait 1/2 sec, then write the real value back again
// I got this from the guys at head-to-head who say it's necessary.
outportb(p->uart + MODEM_CONTROL_REGISTER, 0);
start = Sys_DoubleTime();
while ((Sys_DoubleTime() - start) < 0.5)
;
outportb(p->uart + MODEM_CONTROL_REGISTER, MCR_OUT2 | MCR_RTS | MCR_DTR);
start = Sys_DoubleTime();
while ((Sys_DoubleTime() - start) < 0.25)
;
if (*p->clear)
{
Modem_Command (p, p->clear);
start = Sys_DoubleTime();
while(1)
{
if ((Sys_DoubleTime() - start) > 3.0)
{
Con_Printf("No response - clear failed\n");
p->enabled = false;
goto failed;
}
response = Modem_Response(p);
if (!response)
continue;
if (Q_strncmp(response, "OK", 2) == 0)
break;
if (Q_strncmp(response, "ERROR", 5) == 0)
{
p->enabled = false;
goto failed;
}
}
}
if (*p->startup)
{
Modem_Command (p, p->startup);
start = Sys_DoubleTime();
while(1)
{
if ((Sys_DoubleTime() - start) > 3.0)
{
Con_Printf("No response - init failed\n");
p->enabled = false;
goto failed;
}
response = Modem_Response(p);
if (!response)
continue;
if (Q_strncmp(response, "OK", 2) == 0)
break;
if (Q_strncmp(response, "ERROR", 5) == 0)
{
p->enabled = false;
goto failed;
}
}
}
p->modemInitialized = true;
return;
failed:
if (m_return_onerror)
{
key_dest = key_menu;
m_state = m_return_state;
m_return_onerror = false;
Q_strcpy(m_return_reason, "Initialization Failed");
}
return;
}
void TTY_Enable(int handle)
{
ComPort *p;
p = handleToPort [handle];
if (p->enabled)
return;
ComPort_Enable(p);
if (p->useModem && !p->modemInitialized)
Modem_Init (p);
}
int TTY_Open(int serialPortNumber)
{
return serialPortNumber;
}
void TTY_Close(int handle)
{
ComPort *p;
double startTime;
p = handleToPort [handle];
startTime = Sys_DoubleTime();
while ((Sys_DoubleTime() - startTime) < 1.0)
if (EMPTY(p->outputQueue))
break;
if (p->useModem)
{
if (p->modemConnected)
Modem_Hangup(p);
}
}
int TTY_ReadByte(int handle)
{
int ret;
ComPort *p;
p = handleToPort [handle];
if ((ret = CheckStatus (p)) != 0)
return ret;
if (EMPTY (p->inputQueue))
return ERR_TTY_NODATA;
DEQUEUE (p->inputQueue, ret);
return (ret & 0xff);
}
int TTY_WriteByte(int handle, byte data)
{
ComPort *p;
p = handleToPort [handle];
if (FULL(p->outputQueue))
return -1;
ENQUEUE (p->outputQueue, data);
return 0;
}
void TTY_Flush(int handle)
{
byte b;
ComPort *p;
p = handleToPort [handle];
if (inportb (p->uart + LINE_STATUS_REGISTER ) & LSR_TRANSMITTER_EMPTY)
{
DEQUEUE (p->outputQueue, b);
outportb(p->uart, b);
}
}
int TTY_Connect(int handle, char *host)
{
double start;
ComPort *p;
char *response = NULL;
keydest_t save_key_dest;
byte dialstring[64];
byte b;
p = handleToPort[handle];
if ((p->modemStatus & MODEM_STATUS_MASK) != MODEM_STATUS_MASK)
{
Con_Printf ("Serial: line not ready (");
if ((p->modemStatus & MSR_CTS) == 0)
Con_Printf(" CTS");
if ((p->modemStatus & MSR_DSR) == 0)
Con_Printf(" DSR");
if ((p->modemStatus & MSR_CD) == 0)
Con_Printf(" CD");
Con_Printf(" )");
return -1;
}
// discard any scraps in the input buffer
while (! EMPTY (p->inputQueue))
DEQUEUE (p->inputQueue, b);
CheckStatus (p);
if (p->useModem)
{
save_key_dest = key_dest;
key_dest = key_console;
key_count = -2;
Con_Printf ("Dialing...\n");
sprintf(dialstring, "AT D%c %s\r", p->dialType, host);
Modem_Command (p, dialstring);
start = Sys_DoubleTime();
while(1)
{
if ((Sys_DoubleTime() - start) > 60.0)
{
Con_Printf("Dialing failure!\n");
break;
}
Sys_SendKeyEvents ();
if (key_count == 0)
{
if (key_lastpress != K_ESCAPE)
{
key_count = -2;
continue;
}
Con_Printf("Aborting...\n");
while ((Sys_DoubleTime() - start) < 5.0)
;
disable();
p->outputQueue.head = p->outputQueue.tail = 0;
p->inputQueue.head = p->inputQueue.tail = 0;
outportb(p->uart + MODEM_CONTROL_REGISTER, inportb(p->uart + MODEM_CONTROL_REGISTER) & ~MCR_DTR);
enable();
start = Sys_DoubleTime();
while ((Sys_DoubleTime() - start) < 0.75)
;
outportb(p->uart + MODEM_CONTROL_REGISTER, inportb(p->uart + MODEM_CONTROL_REGISTER) | MCR_DTR);
response = "Aborted";
break;
}
response = Modem_Response(p);
if (!response)
continue;
if (Q_strncmp(response, "CONNECT", 7) == 0)
{
disable();
p->modemRang = true;
p->modemConnected = true;
p->outputQueue.head = p->outputQueue.tail = 0;
p->inputQueue.head = p->inputQueue.tail = 0;
enable();
key_dest = save_key_dest;
key_count = 0;
m_return_onerror = false;
return 0;
}
if (Q_strncmp(response, "NO CARRIER", 10) == 0)
break;
if (Q_strncmp(response, "NO DIALTONE", 11) == 0)
break;
if (Q_strncmp(response, "NO DIAL TONE", 12) == 0)
break;
if (Q_strncmp(response, "NO ANSWER", 9) == 0)
break;
if (Q_strncmp(response, "BUSY", 4) == 0)
break;
if (Q_strncmp(response, "ERROR", 5) == 0)
break;
}
key_dest = save_key_dest;
key_count = 0;
if (m_return_onerror)
{
key_dest = key_menu;
m_state = m_return_state;
m_return_onerror = false;
Q_strncpy(m_return_reason, response, 31);
}
return -1;
}
m_return_onerror = false;
return 0;
}
void TTY_Disconnect(int handle)
{
ComPort *p;
p = handleToPort[handle];
if (p->useModem && p->modemConnected)
Modem_Hangup(p);
}
qboolean TTY_CheckForConnection(int handle)
{
ComPort *p;
p = handleToPort[handle];
CheckStatus (p);
if (p->useModem)
{
if (!p->modemRang)
{
if (!Modem_Response(p))
return false;
if (Q_strncmp(p->buffer, "RING", 4) == 0)
{
Modem_Command (p, "ATA");
p->modemRang = true;
p->timestamp = net_time;
}
return false;
}
if (!p->modemConnected)
{
if ((net_time - p->timestamp) > 35.0)
{
Con_Printf("Unable to establish modem connection\n");
p->modemRang = false;
return false;
}
if (!Modem_Response(p))
return false;
if (Q_strncmp (p->buffer, "CONNECT", 7) != 0)
return false;
disable();
p->modemConnected = true;
p->outputQueue.head = p->outputQueue.tail = 0;
p->inputQueue.head = p->inputQueue.tail = 0;
enable();
Con_Printf("Modem Connect\n");
return true;
}
return true;
}
// direct connect case
if (EMPTY (p->inputQueue))
return false;
return true;
}
qboolean TTY_IsEnabled(int serialPortNumber)
{
return handleToPort[serialPortNumber]->enabled;
}
qboolean TTY_IsModem(int serialPortNumber)
{
return handleToPort[serialPortNumber]->useModem;
}
qboolean TTY_OutputQueueIsEmpty(int handle)
{
return EMPTY(handleToPort[handle]->outputQueue);
}
void Com_f (void)
{
ComPort *p;
int portNumber;
int i;
int n;
// first, determine which port they're messing with
portNumber = Q_atoi(Cmd_Argv (0) + 3) - 1;
if (portNumber > 1)
return;
p = handleToPort[portNumber];
if (Cmd_Argc() == 1)
{
Con_Printf("Settings for COM%i\n", portNumber + 1);
Con_Printf("enabled: %s\n", p->enabled ? "true" : "false");
Con_Printf("uart: ");
if (p->uartType == UART_AUTO)
Con_Printf("auto\n");
else if (p->uartType == UART_8250)
Con_Printf("8250\n");
else
Con_Printf("16550\n");
Con_Printf("port: %x\n", p->uart);
Con_Printf("irq: %i\n", p->irq);
Con_Printf("baud: %i\n", 115200 / p->baudBits);
Con_Printf("CTS: %s\n", (p->modemStatusIgnore & MSR_CTS) ? "ignored" : "honored");
Con_Printf("DSR: %s\n", (p->modemStatusIgnore & MSR_DSR) ? "ignored" : "honored");
Con_Printf("CD: %s\n", (p->modemStatusIgnore & MSR_CD) ? "ignored" : "honored");
if (p->useModem)
{
Con_Printf("type: Modem\n");
Con_Printf("clear: %s\n", p->clear);
Con_Printf("startup: %s\n", p->startup);
Con_Printf("shutdown: %s\n", p->shutdown);
}
else
Con_Printf("type: Direct connect\n");
return;
}
if (Cmd_CheckParm ("disable"))
{
if (p->enabled)
ComPort_Disable(p);
p->modemInitialized = false;
return;
}
if (Cmd_CheckParm ("reset"))
{
ComPort_Disable(p);
ResetComPortConfig (p);
return;
}
if ((i = Cmd_CheckParm ("port")) != 0)
{
if (p->enabled)
{
Con_Printf("COM port must be disabled to change port\n");
return;
}
p->uart = Q_atoi (Cmd_Argv (i+1));
}
if ((i = Cmd_CheckParm ("irq")) != 0)
{
if (p->enabled)
{
Con_Printf("COM port must be disabled to change irq\n");
return;
}
p->irq = Q_atoi (Cmd_Argv (i+1));
}
if ((i = Cmd_CheckParm ("baud")) != 0)
{
if (p->enabled)
{
Con_Printf("COM port must be disabled to change baud\n");
return;
}
n = Q_atoi (Cmd_Argv (i+1));
if (n == 0)
Con_Printf("Invalid baud rate specified\n");
else
p->baudBits = 115200 / n;
}
if (Cmd_CheckParm ("8250"))
{
if (p->enabled)
{
Con_Printf("COM port must be disabled to change uart\n");
return;
}
p->uartType = UART_8250;
}
if (Cmd_CheckParm ("16550"))
{
if (p->enabled)
{
Con_Printf("COM port must be disabled to change uart\n");
return;
}
p->uartType = UART_16550;
}
if (Cmd_CheckParm ("auto"))
{
if (p->enabled)
{
Con_Printf("COM port must be disabled to change uart\n");
return;
}
p->uartType = UART_AUTO;
}
if (Cmd_CheckParm ("pulse"))
p->dialType = 'P';
if (Cmd_CheckParm ("tone"))
p->dialType = 'T';
if (Cmd_CheckParm ("direct"))
p->useModem = false;
if (Cmd_CheckParm ("modem"))
p->useModem = true;
if ((i = Cmd_CheckParm ("clear")) != 0)
{
Q_strncpy (p->clear, Cmd_Argv (i+1), 16);
}
if ((i = Cmd_CheckParm ("startup")) != 0)
{
Q_strncpy (p->startup, Cmd_Argv (i+1), 32);
p->modemInitialized = false;
}
if ((i = Cmd_CheckParm ("shutdown")) != 0)
{
Q_strncpy (p->shutdown, Cmd_Argv (i+1), 16);
}
if (Cmd_CheckParm ("-cts"))
{
p->modemStatusIgnore |= MSR_CTS;
p->modemStatus |= MSR_CTS;
}
if (Cmd_CheckParm ("+cts"))
{
p->modemStatusIgnore &= (~MSR_CTS);
p->modemStatus = (inportb (p->uart + MODEM_STATUS_REGISTER) & MODEM_STATUS_MASK) | p->modemStatusIgnore;
}
if (Cmd_CheckParm ("-dsr"))
{
p->modemStatusIgnore |= MSR_DSR;
p->modemStatus |= MSR_DSR;
}
if (Cmd_CheckParm ("+dsr"))
{
p->modemStatusIgnore &= (~MSR_DSR);
p->modemStatus = (inportb (p->uart + MODEM_STATUS_REGISTER) & MODEM_STATUS_MASK) | p->modemStatusIgnore;
}
if (Cmd_CheckParm ("-cd"))
{
p->modemStatusIgnore |= MSR_CD;
p->modemStatus |= MSR_CD;
}
if (Cmd_CheckParm ("+cd"))
{
p->modemStatusIgnore &= (~MSR_CD);
p->modemStatus = (inportb (p->uart + MODEM_STATUS_REGISTER) & MODEM_STATUS_MASK) | p->modemStatusIgnore;
}
if (Cmd_CheckParm ("enable"))
{
if (!p->enabled)
ComPort_Enable(p);
if (p->useModem && !p->modemInitialized)
Modem_Init (p);
}
}
int TTY_Init(void)
{
int n;
ComPort *p;
for (n = 0; n < NUM_COM_PORTS; n++)
{
p = (ComPort *)Hunk_AllocName(sizeof(ComPort), "comport");
if (p == NULL)
Sys_Error("Hunk alloc failed for com port\n");
p->next = portList;
portList = p;
handleToPort[n] = p;
p->portNumber = n;
p->dialType = 'T';
sprintf(p->name, "com%u", n+1);
Cmd_AddCommand (p->name, Com_f);
ResetComPortConfig (p);
}
GetComPortConfig = TTY_GetComPortConfig;
SetComPortConfig = TTY_SetComPortConfig;
GetModemConfig = TTY_GetModemConfig;
SetModemConfig = TTY_SetModemConfig;
return 0;
}
void TTY_Shutdown(void)
{
int n;
ComPort *p;
for (n = 0; n < NUM_COM_PORTS; n++)
{
p = handleToPort[n];
if (p->enabled)
{
while (p->modemConnected)
NET_Poll();
ComPort_Disable (p);
}
}
}
static int Modem_Command(ComPort *p, char *commandString)
{
byte b;
if (CheckStatus (p))
return -1;
disable();
p->outputQueue.head = p->outputQueue.tail = 0;
p->inputQueue.head = p->inputQueue.tail = 0;
enable();
p->bufferUsed = 0;
while (*commandString)
ENQUEUE (p->outputQueue, *commandString++);
ENQUEUE (p->outputQueue, '\r');
// get the transmit rolling
DEQUEUE (p->outputQueue, b);
outportb(p->uart, b);
return 0;
}
static char *Modem_Response(ComPort *p)
{
byte b;
if (CheckStatus (p))
return NULL;
while (! EMPTY(p->inputQueue))
{
DEQUEUE (p->inputQueue, b);
if (p->bufferUsed == (sizeof(p->buffer) - 1))
b = '\r';
if (b == '\r' && p->bufferUsed)
{
p->buffer[p->bufferUsed] = 0;
Con_Printf("%s\n", p->buffer);
SCR_UpdateScreen ();
p->bufferUsed = 0;
return p->buffer;
}
if (b < ' ' || b > 'z')
continue;
p->buffer[p->bufferUsed] = b;
p->bufferUsed++;
}
return NULL;
}
static void Modem_Hangup2(ComPort *p);
static void Modem_Hangup3(ComPort *p);
static void Modem_Hangup4(ComPort *p);
static void Modem_Hangup(ComPort *p)
{
Con_Printf("Hanging up modem...\n");
disable();
p->modemRang = false;
p->outputQueue.head = p->outputQueue.tail = 0;
p->inputQueue.head = p->inputQueue.tail = 0;
outportb(p->uart + MODEM_CONTROL_REGISTER, inportb(p->uart + MODEM_CONTROL_REGISTER) & ~MCR_DTR);
enable();
p->poll.procedure = Modem_Hangup2;
p->poll.arg = p;
SchedulePollProcedure(&p->poll, 1.5);
}
static void Modem_Hangup2(ComPort *p)
{
outportb(p->uart + MODEM_CONTROL_REGISTER, inportb(p->uart + MODEM_CONTROL_REGISTER) | MCR_DTR);
Modem_Command(p, "+++");
p->poll.procedure = Modem_Hangup3;
SchedulePollProcedure(&p->poll, 1.5);
}
static void Modem_Hangup3(ComPort *p)
{
Modem_Command(p, p->shutdown);
p->poll.procedure = Modem_Hangup4;
SchedulePollProcedure(&p->poll, 1.5);
}
static void Modem_Hangup4(ComPort *p)
{
Modem_Response(p);
Con_Printf("Hangup complete\n");
p->modemConnected = false;
}
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