forked from Imagelibrary/rtems
New file -- copied from dmv177 but same as ppcn_60x.
This commit is contained in:
Joel Sherrill
290
c/src/lib/libbsp/shared/console.c
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290
c/src/lib/libbsp/shared/console.c
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/*
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* This file contains the TTY driver for the PPCn_60x
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*
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* This driver uses the termios pseudo driver.
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*
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* COPYRIGHT (c) 1998 by Radstone Technology
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*
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*
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* THIS FILE IS PROVIDED TO YOU, THE USER, "AS IS", WITHOUT WARRANTY OF ANY
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* KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK
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* AS TO THE QUALITY AND PERFORMANCE OF ALL CODE IN THIS FILE IS WITH YOU.
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*
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* You are hereby granted permission to use, copy, modify, and distribute
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* this file, provided that this notice, plus the above copyright notice
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* and disclaimer, appears in all copies. Radstone Technology will provide
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* no support for this code.
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*
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* COPYRIGHT (c) 1989-1997.
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* On-Line Applications Research Corporation (OAR).
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* Copyright assigned to U.S. Government, 1994.
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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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* http://www.OARcorp.com/rtems/license.html.
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*
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* $Id$
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*/
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#include <bsp.h>
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#include <rtems/libio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <termios.h>
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#include <libchip/serial.h>
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/*
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* Load configuration table
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*/
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extern console_data Console_Port_Data[];
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extern unsigned long Console_Port_Count;
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extern rtems_device_minor_number Console_Port_Minor;
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/*PAGE
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*
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* console_open
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*
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* open a port as a termios console.
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*
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*/
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rtems_device_driver console_open(
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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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rtems_status_code status;
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rtems_libio_open_close_args_t *args = arg;
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rtems_libio_ioctl_args_t IoctlArgs;
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struct termios Termios;
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rtems_termios_callbacks Callbacks;
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console_tbl *cptr;
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/*
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* Verify the port number is valid.
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*/
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if ( minor > Console_Port_Count ) {
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return RTEMS_INVALID_NUMBER;
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}
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/*
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* Open the port as a termios console driver.
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*/
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cptr = &Console_Port_Tbl[minor];
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Callbacks.firstOpen = cptr->pDeviceFns->deviceFirstOpen;
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Callbacks.lastClose = cptr->pDeviceFns->deviceLastClose;
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Callbacks.pollRead = cptr->pDeviceFns->deviceRead;
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Callbacks.write = cptr->pDeviceFns->deviceWrite;
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Callbacks.setAttributes = cptr->pDeviceFns->deviceSetAttributes;
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Callbacks.stopRemoteTx = cptr->pDeviceFlow->deviceStopRemoteTx;
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Callbacks.startRemoteTx = cptr->pDeviceFlow->deviceStartRemoteTx;
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Callbacks.outputUsesInterrupts = cptr->pDeviceFns->deviceOutputUsesInterrupts;
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/* XXX what about
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* Console_Port_Tbl[minor].ulMargin,
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* Console_Port_Tbl[minor].ulHysteresis);
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*/
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status = rtems_termios_open ( major, minor, arg, &Callbacks );
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Console_Port_Data[minor].termios_data = args->iop->data1;
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if (minor!=Console_Port_Minor) {
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/*
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* If this is not the console we do not want ECHO and
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* so forth
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*/
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IoctlArgs.iop=args->iop;
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IoctlArgs.command=RTEMS_IO_GET_ATTRIBUTES;
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IoctlArgs.buffer=&Termios;
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rtems_termios_ioctl(&IoctlArgs);
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Termios.c_lflag=ICANON;
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IoctlArgs.command=RTEMS_IO_SET_ATTRIBUTES;
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rtems_termios_ioctl(&IoctlArgs);
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}
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if ( (args->iop->flags&LIBIO_FLAGS_READ) &&
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Console_Port_Tbl[minor].pDeviceFlow &&
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Console_Port_Tbl[minor].pDeviceFlow->deviceStartRemoteTx) {
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Console_Port_Tbl[minor].pDeviceFlow->deviceStartRemoteTx(minor);
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}
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return status;
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}
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/*PAGE
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*
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* console_reserve_resources
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*
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* This routine uses the termios driver to reserve resources.
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*/
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void console_reserve_resources(
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rtems_configuration_table *configuration
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)
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{
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rtems_termios_reserve_resources( configuration, 4 );
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}
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/*PAGE
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*
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* console_close
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*
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* This routine closes a port that has been opened as console.
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*/
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rtems_device_driver console_close(
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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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rtems_libio_open_close_args_t *args = arg;
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if ( (args->iop->flags&LIBIO_FLAGS_READ) &&
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Console_Port_Tbl[minor].pDeviceFlow &&
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Console_Port_Tbl[minor].pDeviceFlow->deviceStopRemoteTx) {
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Console_Port_Tbl[minor].pDeviceFlow->deviceStopRemoteTx(minor);
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}
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return rtems_termios_close (arg);
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}
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/*PAGE
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*
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* console_read
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*
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* This routine uses the termios driver to read a character.
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*/
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rtems_device_driver console_read(
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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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return rtems_termios_read (arg);
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}
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/*PAGE
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*
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* console_write
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*
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* this routine uses the termios driver to write a character.
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*/
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rtems_device_driver console_write(
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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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return rtems_termios_write (arg);
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}
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/*PAGE
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*
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* console_control
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*
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* this routine uses the termios driver to process io
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*/
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rtems_device_driver console_control(
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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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return rtems_termios_ioctl (arg);
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}
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/*PAGE
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*
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* console_initialize
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*
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* Routine called to initialize the console device driver.
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*/
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rtems_device_driver console_initialize(
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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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rtems_status_code status;
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/*
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* initialize the termio interface.
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*/
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rtems_termios_initialize();
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for (minor=0; minor<Console_Port_Count; minor++) {
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/*
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* First perform the configuration dependent probe, then the
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* device dependent probe
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*/
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if ((!Console_Port_Tbl[minor].deviceProbe ||
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Console_Port_Tbl[minor].deviceProbe(minor)) &&
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Console_Port_Tbl[minor].pDeviceFns->deviceProbe(minor)) {
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/*
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* Use this device for the console
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*/
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break;
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}
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}
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if ( minor==Console_Port_Count ) {
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/*
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* Failed to find a working device
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*/
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rtems_fatal_error_occurred(RTEMS_IO_ERROR);
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}
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Console_Port_Minor=minor;
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/*
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* Register Device Names
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*/
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status = rtems_io_register_name("/dev/console", major, Console_Port_Minor );
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if (status != RTEMS_SUCCESSFUL) {
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rtems_fatal_error_occurred(status);
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}
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Console_Port_Tbl[minor].pDeviceFns->deviceInitialize(Console_Port_Minor);
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for (minor++;minor<Console_Port_Count;minor++) {
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/*
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* First perform the configuration dependent probe, then the
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* device dependent probe
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*/
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if ( (!Console_Port_Tbl[minor].deviceProbe ||
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Console_Port_Tbl[minor].deviceProbe(minor)) &&
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Console_Port_Tbl[minor].pDeviceFns->deviceProbe(minor)) {
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status = rtems_io_register_name(
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Console_Port_Tbl[minor].sDeviceName,
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major,
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minor );
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if (status != RTEMS_SUCCESSFUL) {
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rtems_fatal_error_occurred(status);
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}
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/*
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* Initialize the hardware device.
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*/
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Console_Port_Tbl[minor].pDeviceFns->deviceInitialize(minor);
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}
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}
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return RTEMS_SUCCESSFUL;
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}
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