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/*
* RTEMS for Nintendo DS console driver.
*
* Copyright (c) 2008 by Renaud Voltz <renaud.voltz@gmail.com>
* Matthieu Bucchianeri <mbucchia@gmail.com>
*
* 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 <nds.h>
#include <rtems/libio.h>
#include <nds/arm9/console.h>
#include <sys/iosupport.h>
#include <rtems/mw_uid.h>
/*
* enables testsuite output to desmume. this is used to pass the rtems
* testsuite.
* comment the following line to disable (recommended).
*/
//#define TESTSUITE
/*
* printk support.
*/
/* from NDS support library */
extern void consolePrintChar(char c);
void
nds_putch (char c)
{
#ifdef TESTSUITE
__asm__ volatile ("swi $0x1");
#endif
consolePrintChar (c);
}
static volatile char ch = 0;
void
console_push (char c)
{
ch = c;
}
int
nds_getch (void)
{
char c;
while (ch == 0);
c = ch;
ch = 0;
return c;
}
BSP_output_char_function_type BSP_output_char = nds_putch;
BSP_polling_getchar_function_type BSP_poll_char = nds_getch;
/*
* console write operation.
*/
static ssize_t
nds_write (int minor, const char *buf, size_t len)
{
int count;
for (count = 0; count < len; count++) {
nds_putch (buf[count]);
}
return 0;
}
/*
* console read operation.
*/
static int
nds_read (int minor)
{
return nds_getch ();
}
/*
* from touchscreen/parser.c
*/
void register_kbd_msg_queue (char *q_name);
void unregister_kbd_msg_queue (void);
/*
* Console driver
*/
rtems_device_driver
console_initialize (rtems_device_major_number major,
rtems_device_minor_number minor, void *arg)
{
rtems_status_code status;
printk ("[+] console started\n");
rtems_termios_initialize ();
status = rtems_io_register_name ("/dev/console", major, 0);
if (status != RTEMS_SUCCESSFUL) {
printk ("[!] error registering console\n");
rtems_fatal_error_occurred (status);
}
return (RTEMS_SUCCESSFUL);
}
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 = {
NULL, /* firstOpen */
NULL, /* lastClose */
nds_read, /* pollRead */
nds_write, /* write */
NULL, /* setAttributes */
NULL, /* stopRemoteTx */
NULL, /* startRemoteTx */
0 /* 1 = outputUsesInterrupts */
};
status = rtems_termios_open (major, minor, arg, &cb);
if (status != RTEMS_SUCCESSFUL)
printk ("[!] error opening console\n");
return (status);
}
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;
}
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)
{
rtems_libio_ioctl_args_t *args = arg;
switch (args->command) {
case MW_UID_REGISTER_DEVICE:
register_kbd_msg_queue (args->buffer);
break;
case MW_UID_UNREGISTER_DEVICE:
unregister_kbd_msg_queue ();
break;
default:
return rtems_termios_ioctl (arg);
}
args->ioctl_return = 0;
return RTEMS_SUCCESSFUL;
}
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