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 /* SPDX-License-Identifier: BSD-2-Clause */
 
 /*  test_driver
  *
  *  COPYRIGHT (c) 1989-2010.
  *  On-Line Applications Research Corporation (OAR).
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
 #include <rtems.h>
 #include "test_driver.h"
 #include <rtems/libio.h>
 #include <rtems/devnull.h>
 /* 
  * The test driver routines are mostly derived from the null driver routines.
  */
 uint32_t   TEST_major;
 static char initialized;
 
 /*  testDriver_initialize
  *
  *  This routine is the test device driver init routine.
  *
  *  Input parameters:
  *    major - device major number
  *    minor - device minor number
  *    pargp - pointer to parameter block
  *
  *  Output parameters:
  *    rval       - RTEMS_SUCCESSFUL
  */
 rtems_device_driver testDriver_initialize(
   rtems_device_major_number major,
   rtems_device_minor_number minor RTEMS_UNUSED,
   void *pargp RTEMS_UNUSED
 )
 {
   rtems_device_driver status;
 
   if ( !initialized ) {
     initialized = 1;
 
     status = rtems_io_register_name(
       "/dev/test",
       major,
       (rtems_device_minor_number) 0
     );
 
     if (status != RTEMS_SUCCESSFUL)
       rtems_fatal_error_occurred(status);
 
     TEST_major = major;
   }
 
   return RTEMS_SUCCESSFUL;
 }
 
 /*  testDriver_open
  *
  *  This routine is the test device driver open routine.
  *
  *  Input parameters:
  *    major - device major number
  *    minor - device minor number
  *    pargb - pointer to open parameter block
  *
  *  Output parameters:
  *    rval       - RTEMS_SUCCESSFUL
  */
 rtems_device_driver testDriver_open(
   rtems_device_major_number major RTEMS_UNUSED,
   rtems_device_minor_number minor RTEMS_UNUSED,
   void *pargp RTEMS_UNUSED
 )
 {
   return RTEMS_SUCCESSFUL;
 }
 
 /*  testDriver_close
  *
  *  This routine is the test device driver close routine.
  *
  *  Input parameters:
  *    major - device major number
  *    minor - device minor number
  *    pargb - pointer to close parameter block
  *
  *  Output parameters:
  *    rval       - RTEMS_SUCCESSFUL
  */
 rtems_device_driver testDriver_close(
   rtems_device_major_number major RTEMS_UNUSED,
   rtems_device_minor_number minor RTEMS_UNUSED,
   void *pargp RTEMS_UNUSED
 )
 {
   return RTEMS_SUCCESSFUL;
 }
 
 /*  testDriver_read
  *
  *  This routine is the test device driver read routine.
  *
  *  Input parameters:
  *    major - device major number
  *    minor - device minor number
  *    pargp - pointer to read parameter block
  *
  *  Output parameters:
  *    rval       - RTEMS_SUCCESSFUL
  */
 rtems_device_driver testDriver_read(
   rtems_device_major_number major RTEMS_UNUSED,
   rtems_device_minor_number minor RTEMS_UNUSED,
   void *pargp
 )
 {
   rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *) pargp;
 
   if ( rw_args ) {
     if( rw_args->count == 5 )
       rw_args->bytes_moved = 0;
     else {
       rw_args->bytes_moved = 0;
       return RTEMS_NOT_IMPLEMENTED;
     }
   }
   
   return RTEMS_SUCCESSFUL;
 }
 
 /*  testDriver_write
  *
  *  This routine is the test device driver write routine.
  *
  *  Input parameters:
  *    major - device major number
  *    minor - device minor number
  *    pargp - pointer to write parameter block
  *
  *  Output parameters:
  *    rval       - RTEMS_SUCCESSFUL
  */
 rtems_device_driver testDriver_write(
   rtems_device_major_number major RTEMS_UNUSED,
   rtems_device_minor_number minor RTEMS_UNUSED,
   void *pargp
 )
 {
   rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *) pargp;
 
   if ( rw_args ) {
     if( rw_args->count == 5 )
       return null_write( 0, 0, pargp );
     else {
       rw_args->bytes_moved = 0;
       return RTEMS_NOT_IMPLEMENTED;
     }
   }
 
   return RTEMS_SUCCESSFUL;
 }
 
 /*  testDriver_control
  *
  *  This routine is the test device driver control routine.
  *
  *  Input parameters:
  *    major - device major number
  *    minor - device minor number
  *    pargp - pointer to cntrl parameter block
  *
  *  Output parameters:
  *    rval       - RTEMS_SUCCESSFUL
  */
 
 rtems_device_driver testDriver_control(
   rtems_device_major_number major RTEMS_UNUSED,
   rtems_device_minor_number minor RTEMS_UNUSED,
   void *pargp RTEMS_UNUSED
 )
 {
   return RTEMS_NOT_IMPLEMENTED;
 }

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