RTEMS
6.1-rc5
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bsps
m68k
include
mcf5206
mcfuart.h
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/*
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* Generic UART Serial driver for Motorola Coldfire processors definitions
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*
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* Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russian Fed.
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* Author: Victor V. Vengerov <vvv@oktet.ru>
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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.rtems.org/license/LICENSE.
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*/
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#ifndef __MCFUART_H__
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#define __MCFUART_H__
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#include <termios.h>
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#include "bsp.h"
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#include "mcf5206e.h"
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/*
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* The MCF5206e System Clock Frequency; 54MHz default
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*/
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#ifndef SYSTEM_CLOCK_FREQUENCY
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#define SYSTEM_CLOCK_FREQUENCY BSP_SYSTEM_FREQUENCY
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#endif
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/*
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* The following structure is a descriptor of single UART channel.
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* It contains the initialization information about channel and
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* current operating values
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*/
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typedef
struct
mcfuart
{
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uint32_t chn;
/* UART channel number */
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uint8_t intvec;
/* UART interrupt vector number, or
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0 if polled I/O */
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void
*tty;
/* termios channel descriptor */
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volatile
const
char
*tx_buf;
/* Transmit buffer from termios */
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volatile
uint32_t tx_buf_len;
/* Transmit buffer length */
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volatile
uint32_t tx_ptr;
/* Index of next char to transmit*/
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rtems_isr_entry
old_handler;
/* Saved interrupt handler */
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tcflag_t c_iflag;
/* termios input mode flags */
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bool
parerr_mark_flag;
/* Parity error processing
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state */
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}
mcfuart
;
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/* mcfuart_init --
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* This function verifies the input parameters and perform initialization
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* of the Motorola Coldfire on-chip UART descriptor structure.
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*
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*/
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rtems_status_code
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mcfuart_init(
mcfuart
*uart,
void
*tty, uint8_t intvec,
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uint32_t chn);
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/* mcfuart_reset --
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* This function perform the hardware initialization of Motorola
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* Coldfire processor on-chip UART controller using parameters
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* filled by the mcfuart_init function.
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*/
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rtems_status_code
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mcfuart_reset(
mcfuart
*uart);
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/* mcfuart_disable --
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* This function disable the operations on Motorola Coldfire UART
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* controller
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*/
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rtems_status_code
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mcfuart_disable(
mcfuart
*uart);
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/* mcfuart_set_attributes --
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* This function parse the termios attributes structure and perform
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* the appropriate settings in hardware.
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*/
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int
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mcfuart_set_attributes(
mcfuart
*mcf,
const
struct
termios *t);
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/* mcfuart_poll_read --
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* This function tried to read character from MCF UART and perform
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* error handling.
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*/
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int
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mcfuart_poll_read(
mcfuart
*uart);
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/* mcfuart_interrupt_write --
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* This function initiate transmitting of the buffer in interrupt mode.
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*/
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ssize_t
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mcfuart_interrupt_write(
mcfuart
*uart,
const
char
*buf,
size_t
len);
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/* mcfuart_poll_write --
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* This function transmit buffer byte-by-byte in polling mode.
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*/
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ssize_t
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mcfuart_poll_write(
mcfuart
*uart,
const
char
*buf,
size_t
len);
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/* mcfuart_stop_remote_tx --
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* This function stop data flow from remote device.
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*/
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int
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mcfuart_stop_remote_tx(
mcfuart
*uart);
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/* mcfuart_start_remote_tx --
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* This function resume data flow from remote device.
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*/
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int
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mcfuart_start_remote_tx(
mcfuart
*uart);
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#endif
rtems_isr_entry
ISR_Handler_entry rtems_isr_entry
Interrupt service routines installed by rtems_interrupt_catch() shall have this type.
Definition:
intr.h:134
rtems_status_code
rtems_status_code
This enumeration provides status codes for directives of the Classic API.
Definition:
status.h:85
mcfuart
Definition:
mcfuart.h:31
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