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/*
* This file contains the hardware independent portion of a polled
* console device driver. If a BSP chooses to use this, then it
* only has to provide a few board dependent routines.
*/
/*
* COPYRIGHT (c) 1989-1997.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <bsp.h>
#include <rtems/libio.h>
#include <stdlib.h>
#include <assert.h>
#include <bsp/console-polled.h>
#include <bsp/fatal.h>
#include <rtems/console.h>
/*
* Prototypes
*/
ssize_t console_write_support(int, const char *, size_t);
/*
* Console Termios Support Entry Points
*
*/
ssize_t console_write_support (
int minor,
const char *bufarg,
size_t len
)
{
int nwrite = 0;
const char *buf = bufarg;
while (nwrite < len) {
console_outbyte_polled( minor, *buf++ );
nwrite++;
}
return nwrite;
}
/*
* Console Device Driver Entry Points
*
*/
rtems_device_driver console_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
)
{
rtems_status_code status;
/*
* Ensure Termios is initialized
*/
rtems_termios_initialize();
/*
* Make sure the hardware is initialized.
*/
console_initialize_hardware();
/*
* Register Device Names
*/
status = rtems_io_register_name( "/dev/console", major, 0 );
if (status != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred(BSP_FATAL_CONSOLE_REGISTER_DEV_2);
return RTEMS_SUCCESSFUL;
}
rtems_device_driver console_open(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
static const rtems_termios_callbacks pollCallbacks = {
NULL, /* firstOpen */
NULL, /* lastClose */
console_inbyte_nonblocking, /* pollRead */
console_write_support, /* write */
NULL, /* setAttributes */
NULL, /* stopRemoteTx */
NULL, /* startRemoteTx */
0 /* outputUsesInterrupts */
};
assert( minor == 0 );
if ( minor != 0 )
return RTEMS_INVALID_NUMBER;
rtems_termios_open( major, minor, arg, &pollCallbacks );
return RTEMS_SUCCESSFUL;
}
rtems_device_driver console_close(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_termios_close( arg );
}
rtems_device_driver console_read(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_termios_read( arg );
}
rtems_device_driver console_write(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_termios_write( arg );
}
rtems_device_driver console_control(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_termios_ioctl( arg );
}
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