/*
* This file contains the TTY driver for the ep1a
*
* This driver uses the termios pseudo driver.
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#include <bsp.h>
#include <rtems/libio.h>
#include <stdlib.h>
#include <assert.h>
#include <termios.h>
#include "console.h"
#include <rtems/bspIo.h>
/*
* Load configuration table
*/
#include "config.c"
#define NUM_CONSOLE_PORTS (sizeof(Console_Port_Tbl)/sizeof(console_tbl))
console_data Console_Port_Data[NUM_CONSOLE_PORTS];
unsigned long Console_Port_Count;
rtems_device_minor_number Console_Port_Minor;
/* PAGE
*
* console_open
*
* open a port as a termios console.
*
*/
rtems_device_driver console_open(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
rtems_status_code status;
rtems_libio_open_close_args_t *args = arg;
rtems_libio_ioctl_args_t IoctlArgs;
struct termios Termios;
rtems_termios_callbacks Callbacks;
console_fns *c;
/*
* Verify the port number is valid.
*/
if(minor>Console_Port_Count)
{
return RTEMS_INVALID_NUMBER;
}
/*
* open the port as a termios console driver.
*/
c = Console_Port_Tbl[minor].pDeviceFns;
Callbacks.firstOpen = c->deviceFirstOpen;
Callbacks.lastClose = c->deviceLastClose;
Callbacks.pollRead = c->deviceRead;
Callbacks.write = c->deviceWrite;
Callbacks.setAttributes = c->deviceSetAttributes;
Callbacks.stopRemoteTx =
Console_Port_Tbl[minor].pDeviceFlow->deviceStopRemoteTx;
Callbacks.startRemoteTx =
Console_Port_Tbl[minor].pDeviceFlow->deviceStartRemoteTx;
Callbacks.outputUsesInterrupts = c->deviceOutputUsesInterrupts;
status = rtems_termios_open ( major, minor, arg, &Callbacks);
Console_Port_Data[minor].termios_data = args->iop->data1;
if(minor!=Console_Port_Minor)
{
/*
* If this is not the console we do not want ECHO and
* so forth
*/
IoctlArgs.iop=args->iop;
IoctlArgs.command=RTEMS_IO_GET_ATTRIBUTES;
IoctlArgs.buffer=&Termios;
rtems_termios_ioctl(&IoctlArgs);
Termios.c_lflag=ICANON;
IoctlArgs.command=RTEMS_IO_SET_ATTRIBUTES;
rtems_termios_ioctl(&IoctlArgs);
}
if((args->iop->flags&LIBIO_FLAGS_READ) &&
Console_Port_Tbl[minor].pDeviceFlow &&
Console_Port_Tbl[minor].pDeviceFlow->deviceStartRemoteTx)
{
Console_Port_Tbl[minor].pDeviceFlow->deviceStartRemoteTx(minor);
}
return status;
}
rtems_device_driver console_close(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
rtems_libio_open_close_args_t *args = arg;
if((args->iop->flags&LIBIO_FLAGS_READ) &&
Console_Port_Tbl[minor].pDeviceFlow &&
Console_Port_Tbl[minor].pDeviceFlow->deviceStopRemoteTx)
{
Console_Port_Tbl[minor].pDeviceFlow->deviceStopRemoteTx(minor);
}
return rtems_termios_close (arg);
}
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
)
{
return rtems_termios_ioctl (arg);
}
/* PAGE
*
* console_initialize
*
* Routine called to initialize the console device driver.
*/
rtems_device_driver console_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
)
{
rtems_status_code status;
/*
* initialize the termio interface.
*/
rtems_termios_initialize();
Console_Port_Count=NUM_CONSOLE_PORTS;
for(minor=0;
minor<Console_Port_Count;
minor++)
{
/*
* First perform the configuration dependant probe, then the
* device dependant probe
*/
if((!Console_Port_Tbl[minor].deviceProbe ||
Console_Port_Tbl[minor].deviceProbe(minor)) &&
Console_Port_Tbl[minor].pDeviceFns->deviceProbe(minor))
{
/*
* Use this device for the console
*/
break;
}
}
if(minor==Console_Port_Count)
{
/*
* Failed to find a working device
*/
rtems_fatal_error_occurred(RTEMS_IO_ERROR);
}
Console_Port_Minor=minor;
/*
* Register Device Names
*/
status = rtems_io_register_name("/dev/console",
major,
Console_Port_Minor );
if (status != RTEMS_SUCCESSFUL)
{
rtems_fatal_error_occurred(status);
}
if ( Console_Port_Tbl[minor].pDeviceFns->deviceInitialize )
Console_Port_Tbl[minor].pDeviceFns->deviceInitialize(
Console_Port_Minor);
for(minor++;minor<Console_Port_Count;minor++)
{
/*
* First perform the configuration dependant probe, then the
* device dependant probe
*/
if((!Console_Port_Tbl[minor].deviceProbe ||
Console_Port_Tbl[minor].deviceProbe(minor)) &&
Console_Port_Tbl[minor].pDeviceFns->deviceProbe(minor))
{
status = rtems_io_register_name(
Console_Port_Tbl[minor].sDeviceName,
major,
minor );
if (status != RTEMS_SUCCESSFUL)
{
rtems_fatal_error_occurred(status);
}
/*
* Initialize the hardware device.
*/
if ( Console_Port_Tbl[minor].pDeviceFns->deviceInitialize )
Console_Port_Tbl[minor].pDeviceFns->deviceInitialize( minor);
}
}
return RTEMS_SUCCESSFUL;
}
/* PAGE
*
* DEBUG_puts
*
* This should be safe in the event of an error. It attempts to ensure
* that no TX empty interrupts occur while it is doing polled IO. Then
* it restores the state of that external interrupt.
*
* Input parameters:
* string - pointer to debug output string
*
* Output parameters: NONE
*
* Return values: NONE
*/
void DEBUG_puts(
char *string
)
{
char *s;
uint32_t Irql;
rtems_interrupt_disable(Irql);
for ( s = string ; *s ; s++ )
{
Console_Port_Tbl[Console_Port_Minor].pDeviceFns->
deviceWritePolled(Console_Port_Minor, *s);
}
rtems_interrupt_enable(Irql);
}
/* PAGE
*
* DEBUG_puth
*
* This should be safe in the event of an error. It attempts to ensure
* that no TX empty interrupts occur while it is doing polled IO. Then
* it restores the state of that external interrupt.
*
* Input parameters:
* ulHexNum - value to display
*
* Output parameters: NONE
*
* Return values: NONE
*/
void
DEBUG_puth(
uint32_t ulHexNum
)
{
unsigned long i,d;
uint32_t Irql;
rtems_interrupt_disable(Irql);
Console_Port_Tbl[Console_Port_Minor].pDeviceFns->
deviceWritePolled(Console_Port_Minor, '0');
Console_Port_Tbl[Console_Port_Minor].pDeviceFns->
deviceWritePolled(Console_Port_Minor, 'x');
for(i=32;i;)
{
i-=4;
d=(ulHexNum>>i)&0xf;
Console_Port_Tbl[Console_Port_Minor].pDeviceFns->
deviceWritePolled(Console_Port_Minor,
(d<=9) ? d+'0' : d+'a'-0xa);
}
rtems_interrupt_enable(Irql);
}
/* const char arg to be compatible with BSP_output_char decl. */
void
debug_putc_onlcr(const char c)
{
volatile int i;
/*
* Note: Hack to get printk to work. Depends upon bit
* and silverchip to initialize the port and just
* forces a character to be polled out of com1
* regardless of where the console is.
*/
volatile unsigned char *ptr = (void *)0xff800000;
if ('\n'==c){
*ptr = '\r';
asm volatile("sync");
for (i=0;i<0x0fff;i++);
}
*ptr = c;
asm volatile("sync");
for (i=0;i<0x0fff;i++);
}
BSP_output_char_function_type BSP_output_char = debug_putc_onlcr;
/* const char arg to be compatible with BSP_output_char decl. */
