forked from Imagelibrary/rtems
acaae90c67
* README, console/console.c, i2c/i2c.c, i2c/i2cdrv.c, include/bsp.h, include/ds1307.h, include/i2c.h, include/i2cdrv.h, include/nvram.h, nvram/nvram.c, start/start.S, startup/bspclean.c, startup/bspstart.c, startup/gdbinit, startup/init5206e.c, startup/linkcmds, startup/linkcmds.flash, tod/ds1307.c, tod/todcfg.c, tools/runtest: URL for license changed.
444 lines
11 KiB
C
444 lines
11 KiB
C
/*
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* Console driver for Motorola MCF5206E UART modules
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*
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* Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia
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* Author: Victor V. Vengerov <vvv@oktet.ru>
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*
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* COPYRIGHT (c) 1989-1998.
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* On-Line Applications Research Corporation (OAR).
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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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*
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* http://www.rtems.com/license/LICENSE.
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*
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* $Id$
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*/
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#include <termios.h>
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#include <bsp.h>
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#include <rtems/libio.h>
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#include "mcf5206/mcf5206e.h"
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#include "mcf5206/mcfuart.h"
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/* Descriptor structures for two on-chip UART channels */
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static mcfuart uart[2];
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/* Console operations mode:
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* 0 - raw (non-termios) polled input/output
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* 1 - termios-based polled input/output
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* 2 - termios-based interrupt-driven input/output
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*/
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int console_mode = 2;
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#define CONSOLE_MODE_RAW (0)
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#define CONSOLE_MODE_POLL (1)
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#define CONSOLE_MODE_INT (2)
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/* Wrapper functions for MCF UART generic driver */
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/* console_poll_read --
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* wrapper for poll read function
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*
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* PARAMETERS:
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* minor - minor device number
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*
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* RETURNS:
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* character code readed from UART, or -1 if there is no characters
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* available
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*/
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static int
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console_poll_read(int minor)
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{
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return mcfuart_poll_read(&uart[minor]);
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}
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/* console_interrupt_write --
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* wrapper for interrupt write function
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*
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* PARAMETERS:
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* minor - minor device number
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* buf - output buffer
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* len - output buffer length
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*
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* RETURNS:
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* result code
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*/
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static int
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console_interrupt_write(int minor, const char *buf, int len)
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{
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return mcfuart_interrupt_write(&uart[minor], buf, len);
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}
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/* console_poll_write --
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* wrapper for polling mode write function
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*
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* PARAMETERS:
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* minor - minor device number
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* buf - output buffer
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* len - output buffer length
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*
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* RETURNS:
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* result code
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*/
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static int
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console_poll_write(int minor, const char *buf, int len)
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{
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return mcfuart_poll_write(&uart[minor], buf, len);
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}
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/* console_set_attributes --
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* wrapper for hardware-dependent termios attributes setting
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*
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* PARAMETERS:
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* minor - minor device number
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* t - pointer to the termios structure
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*
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* RETURNS:
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* result code
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*/
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static int
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console_set_attributes(int minor, const struct termios *t)
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{
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return mcfuart_set_attributes(&uart[minor], t);
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}
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/* console_stop_remote_tx --
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* wrapper for stopping data flow from remote party.
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*
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* PARAMETERS:
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* minor - minor device number
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*
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* RETURNS:
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* result code
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*/
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static int
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console_stop_remote_tx(int minor)
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{
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if (minor < sizeof(uart)/sizeof(uart[0]))
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return mcfuart_stop_remote_tx(&uart[minor]);
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else
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return RTEMS_INVALID_NUMBER;
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}
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/* console_start_remote_tx --
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* wrapper for resuming data flow from remote party.
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*
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* PARAMETERS:
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* minor - minor device number
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*
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*/
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static int
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console_start_remote_tx(int minor)
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{
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if (minor < sizeof(uart)/sizeof(uart[0]))
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return mcfuart_start_remote_tx(&uart[minor]);
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else
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return RTEMS_INVALID_NUMBER;
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}
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/* console_first_open --
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* wrapper for UART controller initialization functions
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*
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* PARAMETERS:
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* major - major device number
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* minor - minor device number
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* arg - libio device open argument
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*
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* RETURNS:
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* error code
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*/
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static int
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console_first_open(int major, int minor, void *arg)
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{
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rtems_libio_open_close_args_t *args = arg;
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rtems_status_code sc;
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rtems_unsigned8 intvec;
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switch (minor)
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{
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case 0: intvec = BSP_INTVEC_UART1; break;
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case 1: intvec = BSP_INTVEC_UART2; break;
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default:
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return RTEMS_INVALID_NUMBER;
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}
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if (console_mode != CONSOLE_MODE_INT)
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{
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intvec = 0;
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}
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sc = mcfuart_init(&uart[minor], /* uart */
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args->iop->data1, /* tty */
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intvec, /* interrupt vector number */
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minor+1);
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if (sc == RTEMS_SUCCESSFUL)
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sc = mcfuart_reset(&uart[minor]);
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return sc;
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}
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/* console_last_close --
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* wrapper for UART controller close function
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*
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* PARAMETERS:
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* major - major device number
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* minor - minor device number
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* arg - libio device close argument
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*
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* RETURNS:
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* error code
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*/
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static int
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console_last_close(int major, int minor, void *arg)
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{
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return mcfuart_disable(&uart[minor]);
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}
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/* console_initialize --
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* This routine initializes the console IO drivers and register devices
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* in RTEMS I/O system.
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*
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* PARAMETERS:
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* major - major console device number
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* minor - minor console device number (not used)
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* arg - device initialize argument
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*
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* RETURNS:
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* RTEMS error code (RTEMS_SUCCESSFUL if device initialized successfuly)
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*/
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rtems_device_driver
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console_initialize(rtems_device_major_number major,
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rtems_device_minor_number minor,
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void *arg)
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{
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rtems_status_code status;
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/*
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* Set up TERMIOS
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*/
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if (console_mode != CONSOLE_MODE_RAW)
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rtems_termios_initialize ();
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/*
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* Register the devices
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*/
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status = rtems_io_register_name ("/dev/console", major, 0);
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if (status != RTEMS_SUCCESSFUL)
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rtems_fatal_error_occurred (status);
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status = rtems_io_register_name ("/dev/aux", major, 1);
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if (status != RTEMS_SUCCESSFUL)
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rtems_fatal_error_occurred (status);
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if (console_mode == CONSOLE_MODE_RAW)
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{
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rtems_status_code sc;
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sc = mcfuart_init(&uart[0], /* uart */
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NULL, /* tty */
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0, /* interrupt vector number */
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1); /* UART channel number */
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if (sc == RTEMS_SUCCESSFUL)
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sc = mcfuart_reset(&uart[0]);
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sc = mcfuart_init(&uart[1], /* uart */
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NULL, /* tty */
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0, /* interrupt vector number */
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2); /* UART channel number */
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if (sc == RTEMS_SUCCESSFUL)
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sc = mcfuart_reset(&uart[1]);
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return sc;
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}
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return RTEMS_SUCCESSFUL;
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}
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/* console_open --
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* Open console device driver. Pass appropriate termios callback
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* functions to termios library.
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*
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* PARAMETERS:
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* major - major device number for console devices
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* minor - minor device number for console
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* arg - device opening argument
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*
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* RETURNS:
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* RTEMS error code
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*/
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rtems_device_driver
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console_open(rtems_device_major_number major,
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rtems_device_minor_number minor,
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void *arg)
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{
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static const rtems_termios_callbacks intr_callbacks = {
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console_first_open, /* firstOpen */
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console_last_close, /* lastClose */
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NULL, /* pollRead */
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console_interrupt_write, /* write */
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console_set_attributes, /* setAttributes */
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console_stop_remote_tx, /* stopRemoteTx */
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console_start_remote_tx, /* startRemoteTx */
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1 /* outputUsesInterrupts */
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};
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static const rtems_termios_callbacks poll_callbacks = {
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console_first_open, /* firstOpen */
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console_last_close, /* lastClose */
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console_poll_read, /* pollRead */
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console_poll_write, /* write */
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console_set_attributes, /* setAttributes */
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console_stop_remote_tx, /* stopRemoteTx */
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console_start_remote_tx, /* startRemoteTx */
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0 /* outputUsesInterrupts */
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};
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switch (console_mode)
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{
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case CONSOLE_MODE_RAW:
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return RTEMS_SUCCESSFUL;
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case CONSOLE_MODE_INT:
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return rtems_termios_open(major, minor, arg, &intr_callbacks);
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case CONSOLE_MODE_POLL:
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return rtems_termios_open(major, minor, arg, &poll_callbacks);
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default:
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rtems_fatal_error_occurred(0xC07A1310);
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}
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return RTEMS_INTERNAL_ERROR;
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}
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/* console_close --
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* Close console device.
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*
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* PARAMETERS:
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* major - major device number for console devices
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* minor - minor device number for console
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* arg - device close argument
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*
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* RETURNS:
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* RTEMS error code
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*/
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rtems_device_driver
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console_close(rtems_device_major_number major,
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rtems_device_minor_number minor,
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void *arg)
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{
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if (console_mode != CONSOLE_MODE_RAW)
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return rtems_termios_close (arg);
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else
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return RTEMS_SUCCESSFUL;
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}
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/* console_read --
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* Read from the console device
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*
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* PARAMETERS:
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* major - major device number for console devices
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* minor - minor device number for console
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* arg - device read argument
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*
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* RETURNS:
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* RTEMS error code
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*/
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rtems_device_driver
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console_read(rtems_device_major_number major,
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rtems_device_minor_number minor,
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void *arg)
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{
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if (console_mode != CONSOLE_MODE_RAW)
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{
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return rtems_termios_read (arg);
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}
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else
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{
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rtems_libio_rw_args_t *argp = arg;
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char *buf = argp->buffer;
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int count = argp->count;
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int n = 0;
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int c;
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while (n < count)
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{
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do {
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c = mcfuart_poll_read(&uart[minor]);
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} while (c == -1);
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if (c == '\r')
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c = '\n';
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*(buf++) = c;
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n++;
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if (c == '\n')
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break;
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}
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argp->bytes_moved = n;
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return RTEMS_SUCCESSFUL;
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}
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}
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/* console_write --
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* Write to the console device
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*
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* PARAMETERS:
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* major - major device number for console devices
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* minor - minor device number for console
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* arg - device write argument
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*
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* RETURNS:
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* RTEMS error code
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*/
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rtems_device_driver
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console_write(rtems_device_major_number major,
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rtems_device_minor_number minor,
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void *arg
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)
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{
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if (console_mode != CONSOLE_MODE_RAW)
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{
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return rtems_termios_write (arg);
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}
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else
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{
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rtems_libio_rw_args_t *argp = arg;
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char cr = '\r';
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char *buf = argp->buffer;
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int count = argp->count;
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int i;
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for (i = 0; i < count; i++)
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{
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if (*buf == '\n')
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mcfuart_poll_write(&uart[minor], &cr, 1);
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mcfuart_poll_write(&uart[minor], buf, 1);
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buf++;
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}
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argp->bytes_moved = count;
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return RTEMS_SUCCESSFUL;
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}
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}
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/* console_control --
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* Handle console device I/O control (IOCTL)
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*
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* PARAMETERS:
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* major - major device number for console devices
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* minor - minor device number for console
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* arg - device ioctl argument
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*
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* RETURNS:
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* RTEMS error code
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*/
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rtems_device_driver
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console_control(rtems_device_major_number major,
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rtems_device_minor_number minor,
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void *arg)
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{
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if (console_mode != CONSOLE_MODE_RAW)
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{
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return rtems_termios_ioctl (arg);
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}
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else
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{
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return RTEMS_SUCCESSFUL;
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}
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}
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