/**
* @file console.c
*
* This file contains the GBA console I/O package.
*/
/*
* RTEMS GBA BSP
*
* Copyright (c) 2004 Markku Puro <markku.puro@kopteri.net>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <bsp.h>
#include <rtems/bspIo.h>
#include <rtems/libio.h>
#include <rtems/termiostypes.h>
#include <termios.h>
#include <bsp/irq.h>
#include <gba.h>
#include <conio.h>
/**
* @brief gba_pollRead function read char
*
* @param minor unused
* @return character code
*/
static int gba_pollRead(int minor)
{
return(gba_getch());
}
/**
* @brief gba_write function writes chars
*
* Input parameters: minor code, buffer pointer and lenght
* @param minor unused
* @param *buf buffer pointer
* @param len lenght of buffer
* @return character code
*
*/
static ssize_t gba_write(int minor, const char *buf, size_t len)
{
int i;
for (i=0;i<len;i++) {
gba_putch((unsigned short)buf[i]);
}
return len;
}
/**
* @brief gba_setAttributes function is empty
*
* @param minor unused
* @param *t unused
* @return constant 0
*/
static int gba_setAttributes(int minor, const struct termios *t)
{
return 0;
}
/** BSP_output_char for printk support */
BSP_output_char_function_type BSP_output_char = (BSP_output_char_function_type) gba_putch;
/** BSP_poll_char for printk support */
BSP_polling_getchar_function_type BSP_poll_char = gba_getch;
/**
* @brief Console device driver INITIALIZE entry point
*
* Initilizes the I/O console driver.
*
* @param major diver major number
* @param minor driver minor mumber
* @param *arg pointer to parameters
* @return status code
*/
rtems_device_driver
console_initialize(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_status_code status;
/* Set up TERMIOS */
rtems_termios_initialize ();
/* Do device-specific initialization */
/* Allready done in bspstart.c -> gba_textmode(CO60); */
/* Register the device */
status = rtems_io_register_name ("/dev/console", major, 0);
if (status != RTEMS_SUCCESSFUL) {
printk("Error registering console device!\n");
rtems_fatal_error_occurred (status);
}
printk("Initialized GBA console\n\n");
return RTEMS_SUCCESSFUL;
}
/**
* @brief console_first_open function is empty
*
* @param major diver major number
* @param minor driver minor mumber
* @param *arg pointer to parameters
* @return status code
*/
static int console_first_open(int major, int minor, void *arg)
{
return 0;
}
/**
* @brief console_last_close function is empty
*
* @param major diver major number
* @param minor driver minor mumber
* @param *arg pointer to parameters
* @return status code
*/
static int console_last_close(int major, int minor, void *arg)
{
return 0;
}
/**
* @brief Console device driver OPEN entry point
*
* @param major diver major number
* @param minor driver minor mumber
* @param *arg pointer to parameters
* @return status code
*/
rtems_device_driver
console_open(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_status_code status;
static rtems_termios_callbacks cb =
{
console_first_open, /* firstOpen */
console_last_close, /* lastClose */
gba_pollRead, /* pollRead */
gba_write, /* write */
gba_setAttributes, /* setAttributes */
NULL, /* stopRemoteTx */
NULL, /* startRemoteTx */
TERMIOS_POLLED /* 1 = outputUsesInterrupts */
};
status = rtems_termios_open (major, minor, arg, &cb);
if (status != RTEMS_SUCCESSFUL) {
printk("Error openning console device\n");
return status;
}
return RTEMS_SUCCESSFUL;
}
/**
* @brief Console device driver CLOSE entry point
*
* @param major diver major number
* @param minor driver minor mumber
* @param *arg pointer to parameters
* @return status code
*/
rtems_device_driver
console_close(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_device_driver res = RTEMS_SUCCESSFUL;
res = rtems_termios_close (arg);
return res;
}
/**
* @brief Console device driver READ entry point.
*
* Read characters from the I/O console.
*
* @param major diver major number
* @param minor driver minor mumber
* @param *arg pointer to parameters
* @return status code
*/
rtems_device_driver
console_read(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
return rtems_termios_read (arg);
}
/**
* @brief Console device driver WRITE entry point.
*
* Write characters to the I/O console.
*
* @param major diver major number
* @param minor driver minor mumber
* @param *arg pointer to parameters
* @return status code
*/
rtems_device_driver
console_write(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
return rtems_termios_write (arg);
}
/**
* @brief Handle ioctl request.
*
* @param major diver major number
* @param minor driver minor mumber
* @param *arg pointer to parameters
* @return status code
*/
rtems_device_driver
console_control(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
)
{
return rtems_termios_ioctl (arg);
}
