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67a2288991ce3662a588ee83c0bea9c9efae5f1e
rtems/c/src/lib/libbsp/i386/pc386/console/console.c
Joel Sherrill 67a2288991 Patch from Eric VALETTE <valette@crf.canon.fr>: 
Here is a enhanced version of my previous patch. This patch enables
    to potentially share the new interrupt management code for all Intel targets
    (pc386, go32 and force386) bsp.

    Note :  this patch is complete only for pc386. It still needs to
            be completed for go32 and force386. I carrefully checked
            that anything needed is in for force386 (only some function
            name changes for IDT manipulation and GDT segment
            manipulation). But anyway I will not be able to test any
            of theses targets...
1998-07-23 22:02:34 +00:00

482 lines
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/*-------------------------------------------------------------------------+
| console.c v1.1 - PC386 BSP - 1997/08/07
+--------------------------------------------------------------------------+
| This file contains the PC386 console I/O package.
+--------------------------------------------------------------------------+
| (C) Copyright 1997 -
| - NavIST Group - Real-Time Distributed Systems and Industrial Automation
|
| http://pandora.ist.utl.pt
|
| Instituto Superior Tecnico * Lisboa * PORTUGAL
+--------------------------------------------------------------------------+
| Disclaimer:
|
| This file is provided "AS IS" without warranty of any kind, either
| expressed or implied.
+--------------------------------------------------------------------------+
| This code is based on:
| console.c,v 1.4 1995/12/19 20:07:23 joel Exp - go32 BSP
| With the following copyright notice:
| **************************************************************************
| * COPYRIGHT (c) 1989-1998.
| * On-Line Applications Research Corporation (OAR).
| * Copyright assigned to U.S. Government, 1994.
| *
| * The license and distribution terms for this file may be
| * found in found in the file LICENSE in this distribution or at
| * http://www.OARcorp.com/rtems/license.html.
| **************************************************************************
|
| $Id$
+--------------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <bsp.h>
#include <irq.h>
#include <rtems/libio.h>
#include <termios.h>
#include <pc386uart.h>
int PC386ConsolePort = PC386_CONSOLE_PORT_CONSOLE;
static int conSetAttr(int minor, const struct termios *);
/*-------------------------------------------------------------------------+
| External Prototypes
+--------------------------------------------------------------------------*/
extern void _IBMPC_keyboard_isr(void);
extern void _IBMPC_keyboard_isr_on(const rtems_irq_connect_data*);
extern void _IBMPC_keyboard_isr_off(const rtems_irq_connect_data*);
extern int _IBMPC_keyboard_isr_is_on(const rtems_irq_connect_data*);
static rtems_irq_connect_data console_isr_data = {PC_386_KEYBOARD,
_IBMPC_keyboard_isr,
_IBMPC_keyboard_isr_on,
_IBMPC_keyboard_isr_off,
_IBMPC_keyboard_isr_is_on};
extern rtems_boolean _IBMPC_scankey(char *); /* defined in 'inch.c' */
void console_reserve_resources(rtems_configuration_table *conf)
{
if(PC386ConsolePort != PC386_CONSOLE_PORT_CONSOLE)
{
rtems_termios_reserve_resources(conf, 1);
}
return;
}
void __assert(const char *file, int line, const char *msg)
{
static char buf[20];
static char exit_msg[] = "EXECUTIVE SHUTDOWN! Any key to reboot...";
static char assert_msg[] = "assert failed: ";
unsigned char ch;
const unsigned char *cp;
/*
* Note we cannot call exit or printf from here,
* assert can fail inside ISR too
*/
if(PC386ConsolePort == PC386_CONSOLE_PORT_CONSOLE)
{
printk("\nassert failed: %s: ", file);
printk("%d: ", line);
printk("%s\n\n", msg);
printk(exit_msg);
while(!_IBMPC_scankey(&ch));
printk("\n\n");
}
else
{
PC386_uart_intr_ctrl(PC386ConsolePort, PC386_UART_INTR_CTRL_DISABLE);
PC386_uart_polled_write(PC386ConsolePort, '\r');
PC386_uart_polled_write(PC386ConsolePort, '\n');
for(cp=assert_msg; *cp!=0; cp++)
{
PC386_uart_polled_write(PC386ConsolePort, *cp);
}
for(cp=file; *cp!=0; cp++)
{
PC386_uart_polled_write(PC386ConsolePort, *cp);
}
PC386_uart_polled_write(PC386ConsolePort, ':');
PC386_uart_polled_write(PC386ConsolePort, ' ');
sprintf(buf, "%d: ", line);
for(cp=buf; *cp!=0; cp++)
{
PC386_uart_polled_write(PC386ConsolePort, *cp);
}
for(cp=msg; *cp!=0; cp++)
{
PC386_uart_polled_write(PC386ConsolePort, *cp);
}
PC386_uart_polled_write(PC386ConsolePort, '\r');
PC386_uart_polled_write(PC386ConsolePort, '\n');
PC386_uart_polled_write(PC386ConsolePort, '\r');
PC386_uart_polled_write(PC386ConsolePort, '\n');
for(cp=exit_msg; *cp != 0; cp++)
{
PC386_uart_polled_write(PC386ConsolePort, *cp);
}
PC386_uart_polled_read(PC386ConsolePort);
PC386_uart_polled_write(PC386ConsolePort, '\r');
PC386_uart_polled_write(PC386ConsolePort, '\n');
PC386_uart_polled_write(PC386ConsolePort, '\r');
PC386_uart_polled_write(PC386ConsolePort, '\n');
}
rtemsReboot();
}
/*-------------------------------------------------------------------------+
| Console device driver INITIALIZE entry point.
+--------------------------------------------------------------------------+
| Initilizes the I/O console (keyboard + VGA display) driver.
+--------------------------------------------------------------------------*/
rtems_device_driver
console_initialize(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_status_code status;
/* Initialize video */
_IBMPC_initVideo();
if(PC386ConsolePort == PC386_CONSOLE_PORT_CONSOLE)
{
/* Install keyboard interrupt handler */
status = pc386_install_rtems_irq_handler(&console_isr_data);
if (!status)
{
printk("Error installing keyboard interrupt handler!\n");
rtems_fatal_error_occurred(status);
}
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 console on port CONSOLE\n\n");
}
else
{
/*
* Set up TERMIOS
*/
rtems_termios_initialize ();
/*
* Do device-specific initialization
*/
/* 9600-8-N-1 */
PC386_uart_init(PC386ConsolePort, 9600, 0);
/* Set interrupt handler */
if(PC386ConsolePort == PC386_UART_COM1)
{
console_isr_data.name = PC386_UART_COM1_IRQ;
console_isr_data.hdl = PC386_uart_termios_isr_com1;
}
else
{
assert(PC386ConsolePort == PC386_UART_COM2);
console_isr_data.name = PC386_UART_COM2_IRQ;
console_isr_data.hdl = PC386_uart_termios_isr_com2;
}
status =pc386_install_rtems_irq_handler(&console_isr_data);
/*
* 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);
}
if(PC386ConsolePort == PC386_UART_COM1)
{
printk("Initialized console on port COM1 9600-8-N-1\n\n");
}
else
{
printk("Initialized console on port COM2 9600-8-N-1\n\n");
}
}
return RTEMS_SUCCESSFUL;
} /* console_initialize */
/*-------------------------------------------------------------------------+
| Console device driver OPEN entry point
+--------------------------------------------------------------------------*/
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 */
NULL, /* pollRead */
PC386_uart_termios_write_com1, /* write */
conSetAttr, /* setAttributes */
NULL, /* stopRemoteTx */
NULL, /* startRemoteTx */
1 /* outputUsesInterrupts */
};
if(PC386ConsolePort == PC386_CONSOLE_PORT_CONSOLE)
{
return RTEMS_SUCCESSFUL;
}
if(PC386ConsolePort == PC386_UART_COM2)
{
cb.write = PC386_uart_termios_write_com2;
}
status = rtems_termios_open (major, minor, arg, &cb);
if(status != RTEMS_SUCCESSFUL)
{
printk("Error openning console device\n");
return status;
}
/*
* Pass data area info down to driver
*/
PC386_uart_termios_set(PC386ConsolePort,
((rtems_libio_open_close_args_t *)arg)->iop->data1);
/* Enable interrupts on channel */
PC386_uart_intr_ctrl(PC386ConsolePort, PC386_UART_INTR_CTRL_TERMIOS);
return RTEMS_SUCCESSFUL;
}
/*-------------------------------------------------------------------------+
| Console device driver CLOSE entry point
+--------------------------------------------------------------------------*/
rtems_device_driver
console_close(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_device_driver res = RTEMS_SUCCESSFUL;
if(PC386ConsolePort != PC386_CONSOLE_PORT_CONSOLE)
{
res = rtems_termios_close (arg);
}
pc386_remove_rtems_irq_handler (&console_isr_data);
return res;
} /* console_close */
/*-------------------------------------------------------------------------+
| Console device driver READ entry point.
+--------------------------------------------------------------------------+
| Read characters from the I/O console. We only have stdin.
+--------------------------------------------------------------------------*/
rtems_device_driver
console_read(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *)arg;
char *buffer = rw_args->buffer;
int count, maximum = rw_args->count;
if(PC386ConsolePort != PC386_CONSOLE_PORT_CONSOLE)
{
return rtems_termios_read (arg);
}
for (count = 0; count < maximum; count++)
{
/* Get character */
buffer[count] = _IBMPC_inch_sleep();
/* Echo character to screen */
_IBMPC_outch(buffer[count]);
if (buffer[count] == '\r')
{
_IBMPC_outch('\n'); /* CR = CR + LF */
}
if (buffer[count] == '\n' || buffer[count] == '\r')
{
/* What if this goes past the end of the buffer? We're hosed. [bhc] */
buffer[count++] = '\n';
buffer[count] = '\0';
break;
}
}
rw_args->bytes_moved = count;
return ((count >= 0) ? RTEMS_SUCCESSFUL : RTEMS_UNSATISFIED);
} /* console_read */
/*-------------------------------------------------------------------------+
| Console device driver WRITE entry point.
+--------------------------------------------------------------------------+
| Write characters to the I/O console. Stderr and stdout are the same.
+--------------------------------------------------------------------------*/
rtems_device_driver
console_write(rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg)
{
rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *)arg;
char *buffer = rw_args->buffer;
int count, maximum = rw_args->count;
if(PC386ConsolePort != PC386_CONSOLE_PORT_CONSOLE)
{
return rtems_termios_write (arg);
}
for (count = 0; count < maximum; count++)
{
_IBMPC_outch(buffer[count]);
if (buffer[count] == '\n')
_IBMPC_outch('\r'); /* LF = LF + CR */
}
rw_args->bytes_moved = maximum;
return RTEMS_SUCCESSFUL;
} /* console_write */
/*
* Handle ioctl request.
*/
rtems_device_driver
console_control(rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
if(PC386ConsolePort != PC386_CONSOLE_PORT_CONSOLE)
{
return rtems_termios_ioctl (arg);
}
return RTEMS_SUCCESSFUL;
}
static int
conSetAttr(int minor, const struct termios *t)
{
int baud;
switch (t->c_cflag & CBAUD)
{
case B50:
baud = 50;
break;
case B75:
baud = 75;
break;
case B110:
baud = 110;
break;
case B134:
baud = 134;
break;
case B150:
baud = 150;
break;
case B200:
baud = 200;
break;
case B300:
baud = 300;
break;
case B600:
baud = 600;
break;
case B1200:
baud = 1200;
break;
case B1800:
baud = 1800;
break;
case B2400:
baud = 2400;
break;
case B4800:
baud = 4800;
break;
case B9600:
baud = 9600;
break;
case B19200:
baud = 19200;
break;
case B38400:
baud = 38400;
break;
case B57600:
baud = 57600;
break;
case B115200:
baud = 115200;
break;
default:
baud = 0;
rtems_fatal_error_occurred (RTEMS_INTERNAL_ERROR);
return 0;
}
PC386_uart_set_baud(PC386ConsolePort, baud);
return 0;
}
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