//
// initialize port
//
VOID CpInitialize(__in PCPPORT Port,__in PUCHAR Address,__in ULONG Rate)
{
Port->Address = Address;
Port->Baud = 0;
CpSetBaud(Port,Rate);
//
// assert DTR, RTS.
//
WRITE_UCHAR(Port->Address + COM_MCR,MC_DTRRTS);
//
// disable interrupt
//
WRITE_UCHAR(Port->Address + COM_IEN,0);
}
NTSTATUS
NTAPI
CpInitialize(IN PCPPORT Port,
IN PUCHAR Address,
IN ULONG BaudRate)
{
/* Validity checks */
if (Port == NULL || Address == NULL || BaudRate == 0)
return STATUS_INVALID_PARAMETER;
if (!CpDoesPortExist(Address))
return STATUS_NOT_FOUND;
/* Initialize port data */
Port->Address = Address;
Port->BaudRate = 0;
Port->Flags = 0;
/* Disable the interrupts */
WRITE_PORT_UCHAR(Address + LINE_CONTROL_REGISTER, 0);
WRITE_PORT_UCHAR(Address + INTERRUPT_ENABLE_REGISTER, 0);
/* Turn on DTR, RTS and OUT2 */
WRITE_PORT_UCHAR(Address + MODEM_CONTROL_REGISTER,
SERIAL_MCR_DTR | SERIAL_MCR_RTS | SERIAL_MCR_OUT2);
/* Set the baud rate */
CpSetBaud(Port, BaudRate);
/* Set 8 data bits, 1 stop bit, no parity, no break */
WRITE_PORT_UCHAR(Port->Address + LINE_CONTROL_REGISTER,
SERIAL_8_DATA | SERIAL_1_STOP | SERIAL_NONE_PARITY);
/* Turn on FIFO */
// TODO: Check whether FIFO exists and turn it on in that case.
CpEnableFifo(Address, TRUE); // for 16550
/* Read junk out of the RBR */
(VOID)READ_PORT_UCHAR(Address + RECEIVE_BUFFER_REGISTER);
return STATUS_SUCCESS;
}
VOID
NTAPI
CpInitialize(IN PCPPORT Port,
IN PUCHAR Address,
IN ULONG Rate)
{
/* Reset port data */
Port->Address = Address;
Port->Baud = 0;
/* Set the baud rate */
CpSetBaud(Port, Rate);
/* Enable on DTR and RTS */
WRITE_PORT_UCHAR(Address + MODEM_CONTROL_REGISTER,
SERIAL_MCR_DTR | SERIAL_MCR_RTS);
/* Disable interrupts */
WRITE_PORT_UCHAR(Address + INTERRUPT_ENABLE_REGISTER, 0);
}
