static void __serial_check_fds(SERIAL_DEVICE* serial)
{
IRP* irp;
IRP* prev;
SERIAL_TTY* tty;
uint32 result = 0;
memset(&serial->tv, 0, sizeof(struct timeval));
tty = serial->tty;
/* scan every pending */
irp = list_peek(serial->pending_irps);
while (irp)
{
DEBUG_SVC("MajorFunction %u", irp->MajorFunction);
switch (irp->MajorFunction)
{
case IRP_MJ_READ:
if (FD_ISSET(tty->fd, &serial->read_fds))
{
irp->IoStatus = STATUS_SUCCESS;
serial_process_irp_read(serial, irp);
}
break;
case IRP_MJ_WRITE:
if (FD_ISSET(tty->fd, &serial->write_fds))
{
irp->IoStatus = STATUS_SUCCESS;
serial_process_irp_write(serial, irp);
}
break;
case IRP_MJ_DEVICE_CONTROL:
if (serial_tty_get_event(tty, &result))
{
DEBUG_SVC("got event result %u", result);
irp->IoStatus = STATUS_SUCCESS;
stream_write_uint32(irp->output, result);
irp->Complete(irp);
}
break;
default:
DEBUG_SVC("no request found");
break;
}
prev = irp;
irp = (IRP*)list_next(serial->pending_irps, irp);
if (prev->IoStatus == STATUS_SUCCESS)
{
list_remove(serial->pending_irps, prev);
wait_obj_set(serial->in_event);
}
}
}
static void serial_check_for_events(SERIAL_DEVICE* serial)
{
IRP* irp = NULL;
IRP* prev;
UINT32 result = 0;
SERIAL_TTY* tty;
tty = serial->tty;
if(!tty)
{
DEBUG_WARN("tty = %p", tty);
return;
}
DEBUG_SVC("[in] pending size %d", list_size(serial->pending_irps));
irp = (IRP*) list_peek(serial->pending_irps);
while (irp)
{
prev = NULL;
if (irp->MajorFunction == IRP_MJ_DEVICE_CONTROL)
{
if (serial_tty_get_event(tty, &result))
{
DEBUG_SVC("got event result %u", result);
irp->IoStatus = STATUS_SUCCESS;
Stream_Write_UINT32(irp->output, result);
irp->Complete(irp);
prev = irp;
irp = (IRP*) list_next(serial->pending_irps, irp);
list_remove(serial->pending_irps, prev);
}
}
if (!prev)
irp = (IRP*) list_next(serial->pending_irps, irp);
}
DEBUG_SVC("[out] pending size %d", list_size(serial->pending_irps));
}
static void __serial_check_fds(SERIAL_DEVICE* serial)
{
IRP* irp;
IRP* prev;
SERIAL_TTY* tty;
UINT32 result = 0;
BOOL irp_completed = FALSE;
ZeroMemory(&serial->tv, sizeof(struct timeval));
tty = serial->tty;
if(!tty)
{
DEBUG_WARN("tty = %p", tty);
return;
}
/* scan every pending */
irp = list_peek(serial->pending_irps);
while (irp)
{
DEBUG_SVC("MajorFunction %u", irp->MajorFunction);
switch (irp->MajorFunction)
{
case IRP_MJ_READ:
if (FD_ISSET(tty->fd, &serial->read_fds))
{
irp->IoStatus = STATUS_SUCCESS;
serial_process_irp_read(serial, irp);
irp_completed = TRUE;
}
break;
case IRP_MJ_WRITE:
if (FD_ISSET(tty->fd, &serial->write_fds))
{
irp->IoStatus = STATUS_SUCCESS;
serial_process_irp_write(serial, irp);
irp_completed = TRUE;
}
break;
case IRP_MJ_DEVICE_CONTROL:
if (serial_tty_get_event(tty, &result))
{
DEBUG_SVC("got event result %u", result);
irp->IoStatus = STATUS_SUCCESS;
Stream_Write_UINT32(irp->output, result);
irp->Complete(irp);
irp_completed = TRUE;
}
break;
default:
DEBUG_SVC("no request found");
break;
}
prev = irp;
irp = (IRP*) list_next(serial->pending_irps, irp);
if (irp_completed || (prev->IoStatus == STATUS_SUCCESS))
list_remove(serial->pending_irps, prev);
}
}
UINT32 serial_tty_control(SERIAL_TTY* tty, UINT32 IoControlCode, wStream* input, wStream* output, UINT32* abort_io)
{
int purge_mask;
UINT32 result;
UINT32 modemstate;
BYTE immediate;
UINT32 ret = STATUS_SUCCESS;
UINT32 length = 0;
UINT32 pos;
DEBUG_SVC("in");
Stream_Seek(output, sizeof(UINT32));
switch (IoControlCode)
{
case IOCTL_SERIAL_SET_BAUD_RATE:
Stream_Read_UINT32(input, tty->baud_rate);
tty_set_termios(tty);
DEBUG_SVC("SERIAL_SET_BAUD_RATE %d", tty->baud_rate);
break;
case IOCTL_SERIAL_GET_BAUD_RATE:
length = 4;
Stream_Write_UINT32(output, tty->baud_rate);
DEBUG_SVC("SERIAL_GET_BAUD_RATE %d", tty->baud_rate);
break;
case IOCTL_SERIAL_SET_QUEUE_SIZE:
Stream_Read_UINT32(input, tty->queue_in_size);
Stream_Read_UINT32(input, tty->queue_out_size);
DEBUG_SVC("SERIAL_SET_QUEUE_SIZE in %d out %d", tty->queue_in_size, tty->queue_out_size);
break;
case IOCTL_SERIAL_SET_LINE_CONTROL:
Stream_Read_UINT8(input, tty->stop_bits);
Stream_Read_UINT8(input, tty->parity);
Stream_Read_UINT8(input, tty->word_length);
tty_set_termios(tty);
DEBUG_SVC("SERIAL_SET_LINE_CONTROL stop %d parity %d word %d",
tty->stop_bits, tty->parity, tty->word_length);
break;
case IOCTL_SERIAL_GET_LINE_CONTROL:
DEBUG_SVC("SERIAL_GET_LINE_CONTROL");
length = 3;
Stream_Write_UINT8(output, tty->stop_bits);
Stream_Write_UINT8(output, tty->parity);
Stream_Write_UINT8(output, tty->word_length);
break;
case IOCTL_SERIAL_IMMEDIATE_CHAR:
DEBUG_SVC("SERIAL_IMMEDIATE_CHAR");
Stream_Read_UINT8(input, immediate);
tty_write_data(tty, &immediate, 1);
break;
case IOCTL_SERIAL_CONFIG_SIZE:
DEBUG_SVC("SERIAL_CONFIG_SIZE");
length = 4;
Stream_Write_UINT32(output, 0);
break;
case IOCTL_SERIAL_GET_CHARS:
DEBUG_SVC("SERIAL_GET_CHARS");
length = 6;
Stream_Write(output, tty->chars, 6);
break;
case IOCTL_SERIAL_SET_CHARS:
DEBUG_SVC("SERIAL_SET_CHARS");
Stream_Read(input, tty->chars, 6);
tty_set_termios(tty);
break;
case IOCTL_SERIAL_GET_HANDFLOW:
length = 16;
tty_get_termios(tty);
Stream_Write_UINT32(output, tty->control);
Stream_Write_UINT32(output, tty->xonoff);
Stream_Write_UINT32(output, tty->onlimit);
Stream_Write_UINT32(output, tty->offlimit);
DEBUG_SVC("IOCTL_SERIAL_GET_HANDFLOW %X %X %X %X",
tty->control, tty->xonoff, tty->onlimit, tty->offlimit);
break;
case IOCTL_SERIAL_SET_HANDFLOW:
Stream_Read_UINT32(input, tty->control);
Stream_Read_UINT32(input, tty->xonoff);
Stream_Read_UINT32(input, tty->onlimit);
Stream_Read_UINT32(input, tty->offlimit);
DEBUG_SVC("IOCTL_SERIAL_SET_HANDFLOW %X %X %X %X",
tty->control, tty->xonoff, tty->onlimit, tty->offlimit);
tty_set_termios(tty);
break;
case IOCTL_SERIAL_SET_TIMEOUTS:
Stream_Read_UINT32(input, tty->read_interval_timeout);
Stream_Read_UINT32(input, tty->read_total_timeout_multiplier);
Stream_Read_UINT32(input, tty->read_total_timeout_constant);
Stream_Read_UINT32(input, tty->write_total_timeout_multiplier);
Stream_Read_UINT32(input, tty->write_total_timeout_constant);
/* http://www.codeproject.com/KB/system/chaiyasit_t.aspx, see 'ReadIntervalTimeout' section
http://msdn.microsoft.com/en-us/library/ms885171.aspx */
if (tty->read_interval_timeout == SERIAL_TIMEOUT_MAX)
{
tty->read_interval_timeout = 0;
tty->read_total_timeout_multiplier = 0;
}
DEBUG_SVC("SERIAL_SET_TIMEOUTS read timeout %d %d %d",
tty->read_interval_timeout,
tty->read_total_timeout_multiplier,
tty->read_total_timeout_constant);
break;
case IOCTL_SERIAL_GET_TIMEOUTS:
DEBUG_SVC("SERIAL_GET_TIMEOUTS read timeout %d %d %d",
tty->read_interval_timeout,
tty->read_total_timeout_multiplier,
tty->read_total_timeout_constant);
length = 20;
Stream_Write_UINT32(output, tty->read_interval_timeout);
Stream_Write_UINT32(output, tty->read_total_timeout_multiplier);
Stream_Write_UINT32(output, tty->read_total_timeout_constant);
Stream_Write_UINT32(output, tty->write_total_timeout_multiplier);
Stream_Write_UINT32(output, tty->write_total_timeout_constant);
break;
case IOCTL_SERIAL_GET_WAIT_MASK:
DEBUG_SVC("SERIAL_GET_WAIT_MASK %X", tty->wait_mask);
length = 4;
Stream_Write_UINT32(output, tty->wait_mask);
break;
case IOCTL_SERIAL_SET_WAIT_MASK:
Stream_Read_UINT32(input, tty->wait_mask);
DEBUG_SVC("SERIAL_SET_WAIT_MASK %X", tty->wait_mask);
break;
case IOCTL_SERIAL_SET_DTR:
DEBUG_SVC("SERIAL_SET_DTR");
ioctl(tty->fd, TIOCMGET, &result);
result |= TIOCM_DTR;
ioctl(tty->fd, TIOCMSET, &result);
tty->dtr = 1;
break;
case IOCTL_SERIAL_CLR_DTR:
DEBUG_SVC("SERIAL_CLR_DTR");
ioctl(tty->fd, TIOCMGET, &result);
result &= ~TIOCM_DTR;
ioctl(tty->fd, TIOCMSET, &result);
tty->dtr = 0;
break;
case IOCTL_SERIAL_SET_RTS:
DEBUG_SVC("SERIAL_SET_RTS");
ioctl(tty->fd, TIOCMGET, &result);
result |= TIOCM_RTS;
ioctl(tty->fd, TIOCMSET, &result);
tty->rts = 1;
break;
case IOCTL_SERIAL_CLR_RTS:
DEBUG_SVC("SERIAL_CLR_RTS");
ioctl(tty->fd, TIOCMGET, &result);
result &= ~TIOCM_RTS;
ioctl(tty->fd, TIOCMSET, &result);
tty->rts = 0;
break;
case IOCTL_SERIAL_GET_MODEMSTATUS:
modemstate = 0;
#ifdef TIOCMGET
ioctl(tty->fd, TIOCMGET, &result);
if (result & TIOCM_CTS)
modemstate |= SERIAL_MS_CTS;
if (result & TIOCM_DSR)
modemstate |= SERIAL_MS_DSR;
if (result & TIOCM_RNG)
modemstate |= SERIAL_MS_RNG;
if (result & TIOCM_CAR)
modemstate |= SERIAL_MS_CAR;
if (result & TIOCM_DTR)
modemstate |= SERIAL_MS_DTR;
if (result & TIOCM_RTS)
modemstate |= SERIAL_MS_RTS;
#endif
DEBUG_SVC("SERIAL_GET_MODEMSTATUS %X", modemstate);
length = 4;
Stream_Write_UINT32(output, modemstate);
break;
case IOCTL_SERIAL_GET_COMMSTATUS:
length = 18;
Stream_Write_UINT32(output, 0); /* Errors */
Stream_Write_UINT32(output, 0); /* Hold reasons */
result = 0;
#ifdef TIOCINQ
ioctl(tty->fd, TIOCINQ, &result);
#endif
Stream_Write_UINT32(output, result); /* Amount in in queue */
if (result)
DEBUG_SVC("SERIAL_GET_COMMSTATUS in queue %d", result);
result = 0;
#ifdef TIOCOUTQ
ioctl(tty->fd, TIOCOUTQ, &result);
#endif
Stream_Write_UINT32(output, result); /* Amount in out queue */
DEBUG_SVC("SERIAL_GET_COMMSTATUS out queue %d", result);
Stream_Write_UINT8(output, 0); /* EofReceived */
Stream_Write_UINT8(output, 0); /* WaitForImmediate */
break;
case IOCTL_SERIAL_PURGE:
Stream_Read_UINT32(input, purge_mask);
DEBUG_SVC("SERIAL_PURGE purge_mask %X", purge_mask);
/* See http://msdn.microsoft.com/en-us/library/ms901431.aspx
PURGE_TXCLEAR Clears the output buffer, if the driver has one.
PURGE_RXCLEAR Clears the input buffer, if the driver has one.
It clearly states to clear the *driver* buffer, not the port buffer
*/
#ifdef DEBUG_SVC
if (purge_mask & SERIAL_PURGE_TXCLEAR)
DEBUG_SVC("Ignoring SERIAL_PURGE_TXCLEAR");
if (purge_mask & SERIAL_PURGE_RXCLEAR)
DEBUG_SVC("Ignoring SERIAL_PURGE_RXCLEAR");
#endif
if (purge_mask & SERIAL_PURGE_TXABORT)
*abort_io |= SERIAL_ABORT_IO_WRITE;
if (purge_mask & SERIAL_PURGE_RXABORT)
*abort_io |= SERIAL_ABORT_IO_READ;
break;
case IOCTL_SERIAL_WAIT_ON_MASK:
DEBUG_SVC("SERIAL_WAIT_ON_MASK %X", tty->wait_mask);
tty->event_pending = 1;
length = 4;
if (serial_tty_get_event(tty, &result))
{
DEBUG_SVC("WAIT end event = %X", result);
Stream_Write_UINT32(output, result);
break;
}
ret = STATUS_PENDING;
break;
case IOCTL_SERIAL_SET_BREAK_ON:
DEBUG_SVC("SERIAL_SET_BREAK_ON");
tcsendbreak(tty->fd, 0);
break;
case IOCTL_SERIAL_RESET_DEVICE:
DEBUG_SVC("SERIAL_RESET_DEVICE");
break;
case IOCTL_SERIAL_SET_BREAK_OFF:
DEBUG_SVC("SERIAL_SET_BREAK_OFF");
break;
case IOCTL_SERIAL_SET_XOFF:
DEBUG_SVC("SERIAL_SET_XOFF");
break;
case IOCTL_SERIAL_SET_XON:
DEBUG_SVC("SERIAL_SET_XON");
tcflow(tty->fd, TCION);
break;
default:
DEBUG_SVC("NOT FOUND IoControlCode SERIAL IOCTL %d", IoControlCode);
return STATUS_INVALID_PARAMETER;
}
/* Write OutputBufferLength */
pos = Stream_GetPosition(output);
Stream_SetPosition(output, 16);
Stream_Write_UINT32(output, length);
Stream_SetPosition(output, pos);
return ret;
}