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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libbsp/] [powerpc/] [eth_comm/] [console/] [console.c] - Blame information for rev 173

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1 30 unneback 
#define I_WANT_TERMIOS
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/*
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 *  BSP specific Serial I/O Functions for the eth-comm BSP
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 *
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 * This file contains the BSP specific functions for
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 * performing serial I/O. These are the functions
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 * RTEMS uses (the 6 listed in the device driver
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 * structure)
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 *
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 * The SCCs and SMCs are assigned as follows
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 *
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 *   Channel     Device      Minor   Termios
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 *    SMC1      /dev/tty0      0       no
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 *    SMC2      /dev/tty1      1       no
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 *    SCC1      ethernet
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 *    SCC2      /dev/console   3       yes
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 *    SCC3      /dev/tty3      4       no
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 *    SCC4      /dev/tty4      5       no
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 *
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 * FIXME: This should use termios for /dev/console, but it doesn't
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 *  appear to work correctly yet. On startup, with termios enabled,
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 *  the board hangs for a few seconds before running correctly
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 *
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 * Author: Jay Monkman (jmonkman@frasca.com)
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 * Copyright (C) 1998 by Frasca International, Inc.
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 *
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 *  $Id: console.c,v 1.2 2001-09-27 12:00:35 chris Exp $
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 */
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#include <rtems/libio.h>
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#include <mpc860.h>
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#include <mpc860/console.h>
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#include <termios.h>
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rtems_device_driver 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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  rtems_isr_entry old_handler;
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  rtems_status_code sc;
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#ifdef I_WANT_TERMIOS
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  /*
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   * Set up TERMIOS (for /dev/console)
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   */
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  rtems_termios_initialize();
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#endif
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  /*
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   * Set up Buffer Descriptors
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   */
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  m860_console_initialize();
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  /*
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   * Do device-specific initialization
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   */
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  m860_scc_initialize(2);  /* /dev/console */
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  m860_scc_initialize(3);  /* /dev/tty3   */
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  m860_scc_initialize(4);  /* /dev/tty4   */
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  m860_smc_initialize(1);  /* /dev/tty0   */
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  m860_smc_initialize(2);  /* /dev/tty1   */
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  sc = rtems_interrupt_catch (m860_scc2_console_interrupt_handler,
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                              PPC_IRQ_CPM_SCC2,
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                              &old_handler);
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  sc = rtems_interrupt_catch (m860_scc3_console_interrupt_handler,
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                              PPC_IRQ_CPM_SCC3,
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                              &old_handler);
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  sc = rtems_interrupt_catch (m860_scc4_console_interrupt_handler,
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                              PPC_IRQ_CPM_SCC4,
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                              &old_handler);
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  sc = rtems_interrupt_catch (m860_smc1_console_interrupt_handler,
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                              PPC_IRQ_CPM_SMC1,
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                              &old_handler);
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  sc = rtems_interrupt_catch (m860_smc2_console_interrupt_handler,
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                              PPC_IRQ_CPM_SMC2,
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                              &old_handler);
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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, SCC2_MINOR);
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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/tty0", major, SMC1_MINOR);
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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/tty1", major, SMC2_MINOR);
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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/tty3", major, SCC3_MINOR);
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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/tty4", major, SCC4_MINOR);
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  if (status != RTEMS_SUCCESSFUL)
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    rtems_fatal_error_occurred (status);
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  return RTEMS_SUCCESSFUL;
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}
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rtems_device_driver 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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  volatile m860SCCRegisters_t *sccregs;
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#ifdef I_WANT_TERMIOS
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  static const rtems_termios_callbacks sccPollCallbacks = {
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    NULL,                       /* firstOpen */
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    NULL,                       /* lastClose */
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    m860_char_poll_read,        /* pollRead */
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    m860_char_poll_write,       /* write */
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    m860_scc_set_attributes,    /* setAttributes */
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    NULL,                       /* stopRemoteTx */
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    NULL,                       /* startRemoteTx */
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  };
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#endif /* I_WANT_TERMIOS */
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  sccregs = 0;
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  switch (minor) {
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  case 0:
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    m860.smc1.smcm = 1;           /* Enable SMC1 RX interrupts */
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    m860.cimr |= 1UL <<  4;       /* Enable SMC1 interrupts */
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    break;
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  case 1:
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    m860.smc2.smcm = 1;           /* Enable SMC2 RX interrupts */
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    m860.cimr |= 1UL <<  3;       /* Enable SMC2 interrupts */
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    break;
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  case 2:
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    m860.cimr |= 1UL << 30;      /* Enable SCC1 interrupts */
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    sccregs = &m860.scc1;
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    break;
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  case 3:
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#ifndef I_WANT_TERMIOS
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    m860.cimr |= 1UL << 29;      /* Enable SCC2 interrupts */
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#endif /* I_WANT_TERMIOS */
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    sccregs = &m860.scc2;
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    break;
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  case 4:
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    m860.cimr |= 1UL << 28;      /* Enable SCC3 interrupts */
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    sccregs = &m860.scc3;
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    break;
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  case 5:
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    m860.cimr |= 1UL << 27;      /* Enable SCC4 interrupts */
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    sccregs = &m860.scc4;
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    break;
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  default:
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    rtems_panic ("CONSOLE: bad minor number");
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  }
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153 
  if (sccregs)
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    sccregs->sccm=0x3;
155 
 
156 
#ifdef I_WANT_TERMIOS
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  if (minor == SCC2_MINOR) {
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    return rtems_termios_open (major, minor, arg, &sccPollCallbacks);
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  }
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  else {
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    return RTEMS_SUCCESSFUL;
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  }
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#else
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  return RTEMS_SUCCESSFUL;
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#endif
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}
167 
 
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rtems_device_driver console_close(rtems_device_major_number major,
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                                  rtems_device_minor_number minor,
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                                  void *arg)
171 
{
172 
#ifdef I_WANT_TERMIOS
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  if (minor == SCC2_MINOR) {
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    return rtems_termios_close (arg);
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  }
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  else {
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    return RTEMS_SUCCESSFUL;
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  }
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#else
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  return RTEMS_SUCCESSFUL;
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#endif
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}
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184 
rtems_device_driver console_read(rtems_device_major_number major,
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                                 rtems_device_minor_number minor,
186 
                                 void *arg)
187 
{
188 
#ifdef I_WANT_TERMIOS
189 
  if (minor == SCC2_MINOR) {
190 
    return rtems_termios_read(arg);
191 
  }
192 
  else {
193 
    return m860_console_read(major, minor, arg);
194 
  }
195 
#else
196 
  return m860_console_read(major, minor, arg);
197 
#endif
198 
}
199 
 
200 
rtems_device_driver console_write(rtems_device_major_number major,
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                                  rtems_device_minor_number minor,
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                                  void *arg)
203 
{
204 
#ifdef I_WANT_TERMIOS
205 
  if (minor == SCC2_MINOR) {
206 
    return rtems_termios_write(arg);
207 
  }
208 
  else {
209 
    return m860_console_write(major, minor, arg);
210 
  }
211 
#else
212 
  return m860_console_write(major, minor, arg);
213 
#endif
214 
}
215 
 
216 
/*
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 * Handle ioctl request.
218 
 * Should set hardware line speed, bits/char, etc.
219 
 */
220 
rtems_device_driver console_control(rtems_device_major_number major,
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                                    rtems_device_minor_number minor,
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                                    void *arg)
223 
{
224 
#ifdef I_WANT_TERMIOS
225 
  if (minor == SCC2_MINOR) {
226 
    return rtems_termios_ioctl (arg);
227 
  }
228 
  else {
229 
    return RTEMS_SUCCESSFUL;
230 
  }
231 
#else
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  return RTEMS_SUCCESSFUL;
233 
#endif
234 
}
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