diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/ss555/console/console.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/ss555/console/console.c | 371 |
1 files changed, 0 insertions, 371 deletions
diff --git a/c/src/lib/libbsp/powerpc/ss555/console/console.c b/c/src/lib/libbsp/powerpc/ss555/console/console.c deleted file mode 100644 index e13e4734ea..0000000000 --- a/c/src/lib/libbsp/powerpc/ss555/console/console.c +++ /dev/null @@ -1,371 +0,0 @@ -/* - * console.c - * - * This file contains the Intec SS555 termios serial I/O package. - * - * The SCI channels are assigned as follows - * - * Channel Device Minor - * SCI1 /dev/tty0 0 - * SCI2 /dev/tty1 1 - * - * All ports support termios. The use of termios is recommended for real-time - * applications. Termios provides buffering and input processing. When not - * using termios, processing is limited to the substitution of LF for CR on - * input, and the output of a CR following the output of a LF character. - * Note that the terminal should not send CR/LF pairs when the return key - * is pressed, and that output lines are terminated with LF/CR, not CR/LF - * (although that would be easy to change). - * - * I/O may be interrupt-driven (recommended for real-time applications) or - * polled. - * - * LIMITATIONS: - * - * It is not possible to use different I/O modes on the different ports. The - * exception is with printk. The printk port can use a different mode from - * the other ports. If this is done, it is important not to open the printk - * port from an RTEMS application. - * - * Currently, the I/O modes are determined at build time. It would be much - * better to have the mode selected at boot time based on parameters in - * NVRAM. - * - * Interrupt-driven I/O requires termios. - * - * TESTS: - * - * TO RUN THE TESTS, USE POLLED I/O WITHOUT TERMIOS SUPPORT. Some tests - * play with the interrupt masks and turn off I/O. Those tests will hang - * when interrupt-driven I/O is used. Other tests, such as cdtest, do I/O - * from the static constructors before the console is open. This test - * will not work with interrupt-driven I/O. Because of the buffering - * performed in termios, test output may not be in sequence.The tests - * should all be fixed to work with interrupt-driven I/O and to - * produce output in the expected sequence. Obviously, the termios test - * requires termios support in the driver. - * - * Set CONSOLE_MINOR to the appropriate device minor number in the - * config file. This allows the RTEMS application console to be different - * from the GDB port. - * - * This driver handles both available serial ports: it distinguishes - * the sub-devices using minor device numbers. It is not possible to have - * other protocols running on the other ports when this driver is used as - * currently written. - * - * - * SS555 port sponsored by Defence Research and Development Canada - Suffield - * Copyright (C) 2004, Real-Time Systems Inc. (querbach@realtime.bc.ca) - * - * Derived from c/src/lib/libbsp/powerpc/mbx8xx/console/console.c: - * - * Based on code (alloc860.c in eth_comm port) by - * Jay Monkman (jmonkman@frasca.com), - * Copyright (C) 1998 by Frasca International, Inc. - * - * Modifications by Darlene Stewart <Darlene.Stewart@iit.nrc.ca> - * and Charles-Antoine Gauthier <charles.gauthier@iit.nrc.ca>. - * Copyright (c) 2000, National Research Council of Canada - * - */ -#include <stdarg.h> -#include <stdio.h> -#include <termios.h> - -#include <rtems/console.h> -#include <rtems/bspIo.h> -#include <rtems/libio.h> -#include <bsp.h> /* Must be before libio.h */ - -static void _BSP_output_char( char c ); -static rtems_status_code do_poll_read( rtems_device_major_number major, rtems_device_minor_number minor, void * arg); -static rtems_status_code do_poll_write( rtems_device_major_number major, rtems_device_minor_number minor, void * arg); - -static void _BSP_null_char( char c ) {return;} - -BSP_output_char_function_type BSP_output_char = _BSP_null_char; -BSP_polling_getchar_function_type BSP_poll_char = NULL; - -/* - * do_poll_read - * - * Input characters through polled I/O. Returns as soon as a character has - * been received. Otherwise, if we wait for the number of requested - * characters, we could be here forever! - * - * CR is converted to LF on input. The terminal should not send a CR/LF pair - * when the return or enter key is pressed. - * - * Input parameters: - * major - ignored. Should be the major number for this driver. - * minor - selected channel. - * arg->buffer - where to put the received characters. - * arg->count - number of characters to receive before returning--Ignored. - * - * Output parameters: - * arg->bytes_moved - the number of characters read. Always 1. - * - * Return value: RTEMS_SUCCESSFUL - * - * CANNOT BE COMBINED WITH INTERRUPT DRIVEN I/O! - */ -static rtems_status_code do_poll_read( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -) -{ - rtems_libio_rw_args_t *rw_args = arg; - int c; - - while( (c = m5xx_uart_pollRead(minor)) == -1 ); - rw_args->buffer[0] = (uint8_t)c; - if( rw_args->buffer[0] == '\r' ) - rw_args->buffer[0] = '\n'; - rw_args->bytes_moved = 1; - - return RTEMS_SUCCESSFUL; -} - -/* - * do_poll_write - * - * Output characters through polled I/O. Returns only once every character has - * been sent. - * - * CR is transmitted AFTER a LF on output. - * - * Input parameters: - * major - ignored. Should be the major number for this driver. - * minor - selected channel - * arg->buffer - where to get the characters to transmit. - * arg->count - the number of characters to transmit before returning. - * - * Output parameters: - * arg->bytes_moved - the number of characters read - * - * Return value: RTEMS_SUCCESSFUL - * - * CANNOT BE COMBINED WITH INTERRUPT DRIVEN I/O! - */ -static rtems_status_code do_poll_write( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -) -{ - rtems_libio_rw_args_t *rw_args = arg; - uint32_t i; - char cr ='\r'; - - for( i = 0; i < rw_args->count; i++ ) { - m5xx_uart_pollWrite(minor, &(rw_args->buffer[i]), 1); - if ( rw_args->buffer[i] == '\n' ) - m5xx_uart_pollWrite(minor, &cr, 1); - } - rw_args->bytes_moved = i; - - return RTEMS_SUCCESSFUL; -} - -/* - * Print functions prototyped in bspIo.h - */ - -static void _BSP_output_char( char c ) -{ - char cr = '\r'; - - /* - * Can't rely on console_initialize having been called before this - * function is used, so it may fail. - */ - - m5xx_uart_pollWrite( PRINTK_MINOR, &c, 1 ); - if( c == '\n' ) - m5xx_uart_pollWrite( PRINTK_MINOR, &cr, 1 ); -} - -/* - *************** - * BOILERPLATE * - *************** - * - * All these functions are prototyped in rtems/c/src/lib/include/console.h. - */ - -/* - * Initialize and register the device - */ -rtems_device_driver console_initialize( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *arg -) -{ - rtems_status_code status; - - /* - * Set up TERMIOS if needed - */ - #if UARTS_USE_TERMIOS == 1 - rtems_termios_initialize (); - #endif /* UARTS_USE_TERMIOS */ - - /* - * Do device-specific initialization - */ - BSP_output_char = _BSP_output_char; - - m5xx_uart_initialize(SCI1_MINOR); - status = rtems_io_register_name ("/dev/tty0", major, SCI1_MINOR); - if (status != RTEMS_SUCCESSFUL) - rtems_fatal_error_occurred (status); - - m5xx_uart_initialize(SCI2_MINOR); - status = rtems_io_register_name ("/dev/tty1", major, SCI2_MINOR); - if (status != RTEMS_SUCCESSFUL) - rtems_fatal_error_occurred (status); - - /* Now register the RTEMS console */ - status = rtems_io_register_name ("/dev/console", major, CONSOLE_MINOR); - if (status != RTEMS_SUCCESSFUL) - rtems_fatal_error_occurred (status); - - return RTEMS_SUCCESSFUL; -} - -/* - * Open the device - */ -rtems_device_driver console_open( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *arg -) -{ - rtems_status_code sc; - - if ( minor > NUM_PORTS - 1 ) - return RTEMS_INVALID_NUMBER; - - #if (UARTS_USE_TERMIOS == 1) - { - #if (UARTS_IO_MODE == 1) /* RTEMS interrupt-driven I/O with termios */ - - static const rtems_termios_callbacks callbacks = { - m5xx_uart_firstOpen, /* firstOpen */ - m5xx_uart_lastClose, /* lastClose */ - NULL, /* pollRead */ - m5xx_uart_write, /* write */ - m5xx_uart_setAttributes, /* setAttributes */ - NULL, /* stopRemoteTx */ - NULL, /* startRemoteTx */ - TERMIOS_IRQ_DRIVEN /* outputUsesInterrupts */ - }; - sc = rtems_termios_open( major, minor, arg, &callbacks ); - - #else /* UARTS_IO_MODE != 1 */ /* RTEMS polled I/O with termios */ - - static const rtems_termios_callbacks callbacks = { - m5xx_uart_firstOpen, /* firstOpen */ - m5xx_uart_lastClose, /* lastClose */ - m5xx_uart_pollRead, /* pollRead */ - m5xx_uart_pollWrite, /* write */ - m5xx_uart_setAttributes, /* setAttributes */ - NULL, /* stopRemoteTx */ - NULL, /* startRemoteTx */ - TERMIOS_POLLED /* outputUsesInterrupts */ - }; - sc = rtems_termios_open( major, minor, arg, &callbacks ); - - #endif - - return sc; - } - - #else /* no termios -- default to polled I/O */ - { - sc = RTEMS_SUCCESSFUL; - } - #endif - - return sc; -} - -/* - * Close the device - */ -rtems_device_driver console_close( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *arg -) -{ - if ( minor > NUM_PORTS-1 ) - return RTEMS_INVALID_NUMBER; - - #if UARTS_USE_TERMIOS == 1 - return rtems_termios_close( arg ); - #else - return RTEMS_SUCCESSFUL; - #endif -} - -/* - * Read from the device - */ -rtems_device_driver console_read( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *arg -) -{ - if ( minor > NUM_PORTS-1 ) - return RTEMS_INVALID_NUMBER; - - #if UARTS_USE_TERMIOS == 1 - return rtems_termios_read( arg ); - #else - return do_poll_read( major, minor, arg ); - #endif -} - -/* - * Write to the device - */ -rtems_device_driver console_write( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *arg -) -{ - if ( minor > NUM_PORTS-1 ) - return RTEMS_INVALID_NUMBER; - - #if UARTS_USE_TERMIOS == 1 - return rtems_termios_write( arg ); - #else - return do_poll_write( major, minor, arg ); - #endif -} - -/* - * Handle ioctl request. - */ -rtems_device_driver console_control( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *arg -) -{ - if ( minor > NUM_PORTS-1 ) - return RTEMS_INVALID_NUMBER; - - #if UARTS_USE_TERMIOS == 1 - return rtems_termios_ioctl( arg ); - #else - return RTEMS_SUCCESSFUL; - #endif -} |