/***************************************************************************
*
* $Header$
*
* MODULE DESCRIPTION:
* This module implements the RTEMS drivers for the PC serial ports
* as /dev/ttyS1 for COM1 and /dev/ttyS2 as COM2. If one of the ports
* is used as the console, this driver would fail to initialize.
*
* This code was based on the console driver. It is based on the
* current termios framework. This is just a shell around the
* termios support.
*
* by: Rosimildo da Silva:
* rdasilva@connecttel.com
* http://www.connecttel.com
*
* MODIFICATION/HISTORY:
*
* $Log$
* Revision 1.4 2000/10/23 14:10:25 joel
* 2000-10-23 Joel Sherrill <joel@OARcorp.com>
*
* * console/serial_mouse.c: Fixed typos introduced by removal of CR/LF.
*
* Revision 1.3 2000/10/20 16:01:13 joel
* 2000-10-20 Rosimildo da Silva <rdasilva@connecttel.com>
*
* * console/serial_mouse.c: Added support for changing serial parameters.
*
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <bsp.h>
#include <irq.h>
#include <rtems/libio.h>
#include <termios.h>
#include <uart.h>
#include <libcpu/cpuModel.h>
int BSP_poll_read(int);
#include <rtems/mw_uid.h>
#include "serial_mouse.h"
#include "mouse_parser.h"
/* Internal routines */
static int serial_mouse_conSetAttr( int minor, const struct termios *t);
static void isr_on(const rtems_irq_connect_data *);
static void isr_off(const rtems_irq_connect_data *);
static int isr_is_on(const rtems_irq_connect_data *);
extern BSP_polling_getchar_function_type BSP_poll_char;
extern int BSPConsolePort;
/* Select Default to be COM1 */
#if !defined( SERIAL_MOUSE_COM1 ) && !defined( SERIAL_MOUSE_COM2 )
#define SERIAL_MOUSE_COM1 1
#endif
/* select which serial port the mouse is connected to */
#ifdef SERIAL_MOUSE_COM1
#define BSP_UART_PORT BSP_UART_COM1
#define BSP_UART_IRQ BSP_UART_COM1_IRQ
#define BSP_ISR_FUNC BSP_uart_termios_isr_com1
#define BSP_WRITE_FUNC BSP_uart_termios_write_com1
#endif
#ifdef SERIAL_MOUSE_COM2
#define BSP_UART_PORT BSP_UART_COM2
#define BSP_UART_IRQ BSP_UART_COM2_IRQ
#define BSP_ISR_FUNC BSP_uart_termios_isr_com2
#define BSP_WRITE_FUNC BSP_uart_termios_write_com2
#endif
/*
* Interrupt structure for serial_mouse
*/
static rtems_irq_connect_data serial_mouse_isr_data =
{
BSP_UART_IRQ,
BSP_ISR_FUNC,
isr_on,
isr_off,
isr_is_on};
static void isr_on(const rtems_irq_connect_data *unused)
{
return;
}
static void isr_off(const rtems_irq_connect_data *unused)
{
return;
}
static int isr_is_on(const rtems_irq_connect_data *irq)
{
return BSP_irq_enabled_at_i8259s(irq->name);
}
void serial_mouse_reserve_resources(rtems_configuration_table *conf)
{
rtems_termios_reserve_resources(conf, 1);
return;
}
/*
* Serial Mouse - device driver INITIALIZE entry point.
*/
rtems_device_driver
serial_mouse_initialize(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_status_code status;
/* Check if this port is not been used as console */
if( BSPConsolePort == BSP_UART_PORT )
{
status = -1;
printk("SERIAL MOUSE: port selected as console.( %d )\n", BSP_UART_PORT );
rtems_fatal_error_occurred( status );
}
/*
* Set up TERMIOS
*/
rtems_termios_initialize();
/*
* Do device-specific initialization
*/
/* 9600-8-N-1, without hardware flow control */
BSP_uart_init( BSP_UART_PORT, 1200, CHR_8_BITS, 0, 0, 0 );
status = BSP_install_rtems_irq_handler( &serial_mouse_isr_data );
if( !status )
{
printk("Error installing serial mouse interrupt handler!\n");
rtems_fatal_error_occurred(status);
}
/*
* Register the device
*/
status = rtems_io_register_name ("/dev/mouse", major, 0);
if (status != RTEMS_SUCCESSFUL)
{
printk("Error registering /dev/mouse device!\n");
rtems_fatal_error_occurred (status);
}
printk("Device: /dev/mouse on COM%d -- ok \n", BSP_UART_PORT );
return RTEMS_SUCCESSFUL;
} /* tty_initialize */
static int serial_mouse_last_close(int major, int minor, void *arg)
{
BSP_remove_rtems_irq_handler( &serial_mouse_isr_data );
return 0;
}
/*
* serial_mouse - device driver OPEN entry point
*/
rtems_device_driver
serial_mouse_open(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_status_code status;
static rtems_termios_callbacks cb =
{
NULL, /* firstOpen */
serial_mouse_last_close, /* lastClose */
NULL, /* poll read */
BSP_WRITE_FUNC, /* write */
serial_mouse_conSetAttr, /* setAttributes */
NULL, /* stopRemoteTx */
NULL, /* startRemoteTx */
1 /* outputUsesInterrupts */
};
status = rtems_termios_open( major, minor, arg, &cb );
if(status != RTEMS_SUCCESSFUL)
{
printk("Error openning serial_mouse device\n");
return status;
}
/*
* Pass data area info down to driver
*/
BSP_uart_termios_set( BSP_UART_PORT,
((rtems_libio_open_close_args_t *)arg)->iop->data1 );
/* Enable interrupts on channel */
BSP_uart_intr_ctrl( BSP_UART_PORT, BSP_UART_INTR_CTRL_TERMIOS);
return RTEMS_SUCCESSFUL;
}
/*
* TTY - device driver CLOSE entry point
*/
rtems_device_driver
serial_mouse_close(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
return (rtems_termios_close (arg));
} /* tty_close */
/*
* TTY device driver READ entry point.
* Read characters from the tty device.
*/
rtems_device_driver
serial_mouse_read(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
return rtems_termios_read (arg);
} /* tty_read */
/*
* TTY device driver WRITE entry point.
* Write characters to the tty device.
*/
rtems_device_driver
serial_mouse_write(rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg)
{
return rtems_termios_write (arg);
} /* tty_write */
/*
* Handle ioctl request. This is a generic internal
* routine to handle both devices.
*/
static rtems_device_driver serial_mouse_control_internal( int port, void *arg )
{
rtems_libio_ioctl_args_t *args = arg;
switch( args->command )
{
default:
return rtems_termios_ioctl (arg);
break;
case MW_UID_REGISTER_DEVICE:
printk( "SerialMouse: reg=%s\n", args->buffer );
register_mou_msg_queue( args->buffer, BSP_UART_PORT );
break;
case MW_UID_UNREGISTER_DEVICE:
unregister_mou_msg_queue( BSP_UART_PORT );
break;
}
args->ioctl_return = 0;
return RTEMS_SUCCESSFUL;
}
/*
* Handle ioctl request for ttyS1.
*/
rtems_device_driver
serial_mouse_control(rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return serial_mouse_control_internal( BSP_UART_PORT, arg );
}
static int
conSetAttr(int port, int minor, const struct termios *t)
{
unsigned long baud, databits, parity, stopbits;
switch (t->c_cflag & CBAUD)
{
case B50:
baud = 50;
break;
case B75:
baud = 75;
break;
case B110:
baud = 110;
break;
case B134:
baud = 134;
break;
case B150:
baud = 150;
break;
case B200:
baud = 200;
break;
case B300:
baud = 300;
break;
case B600:
baud = 600;
break;
case B1200:
baud = 1200;
break;
case B1800:
baud = 1800;
break;
case B2400:
baud = 2400;
break;
case B4800:
baud = 4800;
break;
case B9600:
baud = 9600;
break;
case B19200:
baud = 19200;
break;
case B38400:
baud = 38400;
break;
case B57600:
baud = 57600;
break;
case B115200:
baud = 115200;
break;
default:
rtems_fatal_error_occurred (RTEMS_INTERNAL_ERROR);
return 0;
}
if (t->c_cflag & PARENB) {
/* Parity is enabled */
if (t->c_cflag & PARODD) {
/* Parity is odd */
parity = PEN;
}
else {
/* Parity is even */
parity = PEN | EPS;
}
}
else {
/* No parity */
parity = 0;
}
switch (t->c_cflag & CSIZE) {
case CS5: databits = CHR_5_BITS; break;
case CS6: databits = CHR_6_BITS; break;
case CS7: databits = CHR_7_BITS; break;
default: /* just to avoid warnings -- all cases are covered. */
case CS8: databits = CHR_8_BITS; break;
}
if (t->c_cflag & CSTOPB) {
/* 2 stop bits */
stopbits = STB;
}
else {
/* 1 stop bit */
stopbits = 0;
}
printk("Mouse baud, port=%X, baud=%d\n", port, baud );
BSP_uart_set_attributes(port, baud, databits, parity, stopbits);
return 0;
}
/*
* Handle ioctl request for ttyS2.
*/
static int
serial_mouse_conSetAttr( int minor, const struct termios *t)
{
return conSetAttr( BSP_UART_PORT, minor, t );
}
