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#define I_WANT_TERMIOS
/*
* BSP specific Serial I/O Functions for the eth-comm BSP
*
* This file contains the BSP specific functions for
* performing serial I/O. These are the functions
* RTEMS uses (the 6 listed in the device driver
* structure)
*
* The SCCs and SMCs are assigned as follows
*
* Channel Device Minor Termios
* SMC1 /dev/tty0 0 no
* SMC2 /dev/tty1 1 no
* SCC1 ethernet
* SCC2 /dev/console 3 yes
* SCC3 /dev/tty3 4 no
* SCC4 /dev/tty4 5 no
*
* FIXME: This should use termios for /dev/console, but it doesn't
* appear to work correctly yet. On startup, with termios enabled,
* the board hangs for a few seconds before running correctly
*
* Author: Jay Monkman (jmonkman@frasca.com)
* Copyright (C) 1998 by Frasca International, Inc.
*
*/
#include <rtems/libio.h>
#include <mpc860.h>
#include <mpc860/console.h>
#include <termios.h>
rtems_device_driver console_initialize(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_status_code status;
rtems_isr_entry old_handler;
rtems_status_code sc;
#ifdef I_WANT_TERMIOS
/*
* Set up TERMIOS (for /dev/console)
*/
rtems_termios_initialize();
#endif
/*
* Set up Buffer Descriptors
*/
m860_console_initialize();
/*
* Do device-specific initialization
*/
m860_scc_initialize(2); /* /dev/console */
m860_scc_initialize(3); /* /dev/tty3 */
m860_scc_initialize(4); /* /dev/tty4 */
m860_smc_initialize(1); /* /dev/tty0 */
m860_smc_initialize(2); /* /dev/tty1 */
sc = rtems_interrupt_catch (m860_scc2_console_interrupt_handler,
PPC_IRQ_CPM_SCC2,
&old_handler);
sc = rtems_interrupt_catch (m860_scc3_console_interrupt_handler,
PPC_IRQ_CPM_SCC3,
&old_handler);
sc = rtems_interrupt_catch (m860_scc4_console_interrupt_handler,
PPC_IRQ_CPM_SCC4,
&old_handler);
sc = rtems_interrupt_catch (m860_smc1_console_interrupt_handler,
PPC_IRQ_CPM_SMC1,
&old_handler);
sc = rtems_interrupt_catch (m860_smc2_console_interrupt_handler,
PPC_IRQ_CPM_SMC2,
&old_handler);
/*
* Register the devices
*/
status = rtems_io_register_name ("/dev/console", major, SCC2_MINOR);
if (status != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred (status);
status = rtems_io_register_name ("/dev/tty0", major, SMC1_MINOR);
if (status != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred (status);
status = rtems_io_register_name ("/dev/tty1", major, SMC2_MINOR);
if (status != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred (status);
status = rtems_io_register_name ("/dev/tty3", major, SCC3_MINOR);
if (status != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred (status);
status = rtems_io_register_name ("/dev/tty4", major, SCC4_MINOR);
if (status != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred (status);
return RTEMS_SUCCESSFUL;
}
rtems_device_driver console_open(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
volatile m860SCCRegisters_t *sccregs;
#ifdef I_WANT_TERMIOS
static const rtems_termios_callbacks sccPollCallbacks = {
NULL, /* firstOpen */
NULL, /* lastClose */
m860_char_poll_read, /* pollRead */
m860_char_poll_write, /* write */
m860_scc_set_attributes, /* setAttributes */
NULL, /* stopRemoteTx */
NULL, /* startRemoteTx */
0 /* outputUsesInterrupts */
};
#endif /* I_WANT_TERMIOS */
sccregs = 0;
switch (minor) {
case 0:
m860.smc1.smcm = 1; /* Enable SMC1 RX interrupts */
m860.cimr |= 1UL << 4; /* Enable SMC1 interrupts */
break;
case 1:
m860.smc2.smcm = 1; /* Enable SMC2 RX interrupts */
m860.cimr |= 1UL << 3; /* Enable SMC2 interrupts */
break;
case 2:
m860.cimr |= 1UL << 30; /* Enable SCC1 interrupts */
sccregs = &m860.scc1;
break;
case 3:
#ifndef I_WANT_TERMIOS
m860.cimr |= 1UL << 29; /* Enable SCC2 interrupts */
#endif /* I_WANT_TERMIOS */
sccregs = &m860.scc2;
break;
case 4:
m860.cimr |= 1UL << 28; /* Enable SCC3 interrupts */
sccregs = &m860.scc3;
break;
case 5:
m860.cimr |= 1UL << 27; /* Enable SCC4 interrupts */
sccregs = &m860.scc4;
break;
default:
rtems_panic ("CONSOLE: bad minor number");
}
if (sccregs)
sccregs->sccm=0x3;
#ifdef I_WANT_TERMIOS
if (minor == SCC2_MINOR) {
return rtems_termios_open (major, minor, arg, &sccPollCallbacks);
}
else {
return RTEMS_SUCCESSFUL;
}
#else
return RTEMS_SUCCESSFUL;
#endif
}
rtems_device_driver console_close(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
#ifdef I_WANT_TERMIOS
if (minor == SCC2_MINOR) {
return rtems_termios_close (arg);
}
else {
return RTEMS_SUCCESSFUL;
}
#else
return RTEMS_SUCCESSFUL;
#endif
}
rtems_device_driver console_read(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
#ifdef I_WANT_TERMIOS
if (minor == SCC2_MINOR) {
return rtems_termios_read(arg);
}
else {
return m860_console_read(major, minor, arg);
}
#else
return m860_console_read(major, minor, arg);
#endif
}
rtems_device_driver console_write(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
#ifdef I_WANT_TERMIOS
if (minor == SCC2_MINOR) {
return rtems_termios_write(arg);
}
else {
return m860_console_write(major, minor, arg);
}
#else
return m860_console_write(major, minor, arg);
#endif
}
/*
* Handle ioctl request.
* Should set hardware line speed, bits/char, etc.
*/
rtems_device_driver console_control(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
#ifdef I_WANT_TERMIOS
if (minor == SCC2_MINOR) {
return rtems_termios_ioctl (arg);
}
else {
return RTEMS_SUCCESSFUL;
}
#else
return RTEMS_SUCCESSFUL;
#endif
}
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