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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* uMon Support Output Driver
*
* COPYRIGHT (c) 1989-2009.
* On-Line Applications Research Corporation (OAR).
*
* Modified by Fernando Nicodemos <fgnicodemos@terra.com.br>
* from NCB - Sistemas Embarcados Ltda. (Brazil)
*
* 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.
*/
#include <rtems/umon.h>
#include <libchip/serial.h>
#include <libchip/sersupp.h>
/* static function prototypes */
static int umoncons_first_open(int major, int minor, void *arg);
static int umoncons_last_close(int major, int minor, void *arg);
static int umoncons_read(int minor);
static ssize_t umoncons_write(int minor, const char *buf, size_t len);
static void umoncons_init(int minor);
static void umoncons_write_polled(int minor, char c);
static int umoncons_set_attributes(int minor, const struct termios *t);
/* Pointers to functions for handling the UART. */
const console_fns umoncons_fns =
{
libchip_serial_default_probe,
umoncons_first_open,
umoncons_last_close,
umoncons_read,
umoncons_write,
umoncons_init,
umoncons_write_polled, /* not used in this driver */
umoncons_set_attributes,
false /* TRUE if interrupt driven, FALSE if not. */
};
/*********************************************************************/
/* Functions called via callbacks (i.e. the ones in uart_fns */
/*********************************************************************/
/*
* This is called the first time each device is opened. Since
* the driver is polled, we don't have to do anything. If the driver
* were interrupt driven, we'd enable interrupts here.
*/
static int umoncons_first_open(int major, int minor, void *arg)
{
return 0;
}
/*
* This is called the last time each device is closed. Since
* the driver is polled, we don't have to do anything. If the driver
* were interrupt driven, we'd disable interrupts here.
*/
static int umoncons_last_close(int major, int minor, void *arg)
{
return 0;
}
/*
* Read one character from UART.
*
* return -1 if there's no data, otherwise return
* the character in lowest 8 bits of returned int.
*/
static int umoncons_read(int minor)
{
if ( !mon_gotachar() )
return -1;
return mon_getchar();
}
/*
* Write buffer to LCD
*
* return 1 on success, -1 on error
*/
static ssize_t umoncons_write(int minor, const char *buf, size_t len)
{
size_t i;
for ( i=0 ; i<len ; i++ )
mon_putchar( buf[i] );
return len;
}
/* Set up the uMon driver. */
static void umoncons_init(int minor)
{
rtems_umon_connect();
}
/* This is used for putchark support */
static void umoncons_write_polled(int minor, char c)
{
mon_putchar( c );
}
/* This is for setting baud rate, bits, etc. */
static int umoncons_set_attributes(int minor, const struct termios *t)
{
return 0;
}
/***********************************************************************/
/*
* The following functions are not used by TERMIOS, but other RTEMS
* functions use them instead.
*/
/***********************************************************************/
/*
* Read from UART. This is used in the exit code, and can't
* rely on interrupts.
*/
int umoncons_poll_read(int minor)
{
if (!mon_gotachar())
return -1;
return mon_getchar();
}
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