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[/] [or1k/] [trunk/] [rtems-20020807/] [c/] [src/] [lib/] [libbsp/] [shared/] [console-polled.c] - Blame information for rev 1765

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1 1026 ivang 
/*
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 *  This file contains the hardware specific portions of the TTY driver
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 *  for the serial ports on the erc32.
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 *
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 *  COPYRIGHT (c) 1989-1997.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  console-polled.c,v 1.4 2001/10/12 21:04:47 joel Exp
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 */
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#include <bsp.h>
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#include <rtems/libio.h>
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#include <stdlib.h>
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#include <assert.h>
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/* external prototypes for monitor interface routines */
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void console_outbyte_polled(
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  int  port,
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  char ch
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);
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int console_inbyte_nonblocking(
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  int port
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);
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void console_initialize_hardware(void);
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/*
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 *  Console Termios Support Entry Points
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 *
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 */
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int console_write_support (
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  int minor,
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  const char *bufarg,
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  int len
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)
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{
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  int nwrite = 0;
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  const char *buf = bufarg;
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  while (nwrite < len) {
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    console_outbyte_polled( minor, *buf++ );
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    nwrite++;
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  }
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  return nwrite;
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}
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/*
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 *  Console Device Driver Entry Points
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 *
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 */
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rtems_device_driver console_initialize(
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  rtems_device_major_number  major,
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  rtems_device_minor_number  minor,
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  void                      *arg
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)
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{
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  rtems_status_code status;
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  rtems_termios_initialize();
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  /*
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   *  Make sure the hardware is initialized.
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   */
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  console_initialize_hardware();
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  /*
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   *  Register Device Names
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   */
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  status = rtems_io_register_name( "/dev/console", major, 0 );
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  if (status != RTEMS_SUCCESSFUL)
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    rtems_fatal_error_occurred(status);
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  return RTEMS_SUCCESSFUL;
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}
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rtems_device_driver console_open(
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  rtems_device_major_number major,
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  rtems_device_minor_number minor,
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  void                    * arg
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)
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{
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  rtems_status_code sc;
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  static const rtems_termios_callbacks pollCallbacks = {
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    NULL,                        /* firstOpen */
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    NULL,                        /* lastClose */
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    console_inbyte_nonblocking,  /* pollRead */
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    console_write_support,       /* write */
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    NULL,                        /* setAttributes */
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    NULL,                        /* stopRemoteTx */
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    NULL,                        /* startRemoteTx */
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  };
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  assert( minor <= 1 );
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  if ( minor > 2 )
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    return RTEMS_INVALID_NUMBER;
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  sc = rtems_termios_open (major, minor, arg, &pollCallbacks );
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  return RTEMS_SUCCESSFUL;
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}
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rtems_device_driver console_close(
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  rtems_device_major_number major,
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  rtems_device_minor_number minor,
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  void                    * arg
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)
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{
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  return rtems_termios_close (arg);
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}
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rtems_device_driver console_read(
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  rtems_device_major_number major,
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  rtems_device_minor_number minor,
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  void                    * arg
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)
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{
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  return rtems_termios_read (arg);
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}
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rtems_device_driver console_write(
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  rtems_device_major_number major,
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  rtems_device_minor_number minor,
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  void                    * arg
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)
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{
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  return rtems_termios_write (arg);
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}
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rtems_device_driver console_control(
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  rtems_device_major_number major,
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  rtems_device_minor_number minor,
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  void                    * arg
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)
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{
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  return rtems_termios_ioctl (arg);
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}
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