diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/leon/console/console.c')
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon/console/console.c | 429 |
1 files changed, 0 insertions, 429 deletions
diff --git a/c/src/lib/libbsp/sparc/leon/console/console.c b/c/src/lib/libbsp/sparc/leon/console/console.c deleted file mode 100644 index c313542317..0000000000 --- a/c/src/lib/libbsp/sparc/leon/console/console.c +++ /dev/null @@ -1,429 +0,0 @@ -/* - * This file contains the TTY driver for the serial ports on the LEON. - * - * This driver uses the termios pseudo driver. - * - * COPYRIGHT (c) 1989-1998. - * 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> - -/* - * Should we use a polled or interrupt drived console? - * - * NOTE: This is defined in the custom/leon.cfg file. - * - * WARNING: In sis 1.6, it did not appear that the UART interrupts - * worked in a desirable fashion. Immediately upon writing - * a character into the TX buffer, an interrupt was generated. - * This did not allow enough time for the program to put more - * characters in the buffer. So every character resulted in - * "priming" the transmitter. This effectively results in - * in a polled console with a useless interrupt per character - * on output. It is reasonable to assume that input does not - * share this problem although it was not investigated. - * - */ - -/* - * console_outbyte_polled - * - * This routine transmits a character using polling. - */ - -void console_outbyte_polled( - int port, - char ch -); - -/* body is in debugputs.c */ - -/* - * console_inbyte_nonblocking - * - * This routine polls for a character. - */ - -int console_inbyte_nonblocking( int port ); - -/* body is in debugputs.c */ - -/* - * Interrupt driven console IO - */ - -#if (CONSOLE_USE_INTERRUPTS) - -/* - * Buffers between task and ISRs - */ - -#include <rtems/ringbuf.h> - -Ring_buffer_t TX_Buffer[ 2 ]; -boolean Is_TX_active[ 2 ]; - -void *console_termios_data[ 2 ]; - -/* - * console_isr_a - * - * This routine is the console interrupt handler for Channel 1. - * - * Input parameters: - * vector - vector number - * - * Output parameters: NONE - * - * Return values: NONE - */ - -rtems_isr console_isr_a( - rtems_vector_number vector -) -{ - char ch; - int UStat; - - if ( (UStat = LEON_REG.UART_Status_1) & LEON_REG_UART_STATUS_DR ) { - if (UStat & LEON_REG_UART_STATUS_ERR) { - LEON_REG.UART_Status_1 = LEON_REG_UART_STATUS_CLR; - } - ch = LEON_REG.UART_Channel_1; - - rtems_termios_enqueue_raw_characters( console_termios_data[ 0 ], &ch, 1 ); - } - - if ( LEON_REG.UART_Status_1 & LEON_REG_UART_STATUS_THE ) { - if ( !Ring_buffer_Is_empty( &TX_Buffer[ 0 ] ) ) { - Ring_buffer_Remove_character( &TX_Buffer[ 0 ], ch ); - LEON_REG.UART_Channel_1 = (uint32_t) ch; - } else - Is_TX_active[ 0 ] = FALSE; - } - - LEON_Clear_interrupt( LEON_INTERRUPT_UART_1_RX_TX ); -} - -/* - * console_isr_b - * - * This routine is the console interrupt handler for Channel 2. - * - * Input parameters: - * vector - vector number - * - * Output parameters: NONE - * - * Return values: NONE - */ - -rtems_isr console_isr_b( - rtems_vector_number vector -) -{ - char ch; - int UStat; - - if ( (UStat = LEON_REG.UART_Status_2) & LEON_REG_UART_STATUS_DR ) { - if (UStat & LEON_REG_UART_STATUS_ERR) { - LEON_REG.UART_Status_2 = LEON_REG_UART_STATUS_CLR; - } - ch = LEON_REG.UART_Channel_2; - rtems_termios_enqueue_raw_characters( console_termios_data[ 1 ], &ch, 1 ); - - } - - if ( LEON_REG.UART_Status_2 & LEON_REG_UART_STATUS_THE ) { - if ( !Ring_buffer_Is_empty( &TX_Buffer[ 1 ] ) ) { - Ring_buffer_Remove_character( &TX_Buffer[ 1 ], ch ); - LEON_REG.UART_Channel_2 = (uint32_t) ch; - } else - Is_TX_active[ 1 ] = FALSE; - } - - LEON_Clear_interrupt( LEON_INTERRUPT_UART_2_RX_TX ); -} - -/* - * console_exit - * - * This routine allows the console to exit by masking its associated interrupt - * vectors. - * - * Input parameters: NONE - * - * Output parameters: NONE - * - * Return values: NONE - */ - -void console_exit() -{ - uint32_t port; - uint32_t ch; - - /* - * Although the interrupts for the UART are unmasked, the PIL is set to - * disable all external interrupts. So we might as well do this first. - */ - - LEON_Mask_interrupt( LEON_INTERRUPT_UART_1_RX_TX ); - LEON_Mask_interrupt( LEON_INTERRUPT_UART_2_RX_TX ); - - for ( port=0 ; port <= 1 ; port++ ) { - while ( !Ring_buffer_Is_empty( &TX_Buffer[ port ] ) ) { - Ring_buffer_Remove_character( &TX_Buffer[ port ], ch ); - console_outbyte_polled( port, ch ); - } - } - - /* - * Now wait for all the data to actually get out ... the send register - * should be empty. - */ - - while ( (LEON_REG.UART_Status_1 & LEON_REG_UART_STATUS_THE) != - LEON_REG_UART_STATUS_THE ); - - while ( (LEON_REG.UART_Status_2 & LEON_REG_UART_STATUS_THE) != - LEON_REG_UART_STATUS_THE ); - - LEON_REG.UART_Control_1 = 0; - LEON_REG.UART_Control_2 = 0; - LEON_REG.UART_Status_1 = 0; - LEON_REG.UART_Status_2 = 0; - -} - -#define CONSOLE_UART_1_TRAP LEON_TRAP_TYPE( LEON_INTERRUPT_UART_1_RX_TX ) -#define CONSOLE_UART_2_TRAP LEON_TRAP_TYPE( LEON_INTERRUPT_UART_2_RX_TX ) - -/* - * console_initialize_interrupts - * - * This routine initializes the console's receive and transmit - * ring buffers and loads the appropriate vectors to handle the interrupts. - * - * Input parameters: NONE - * - * Output parameters: NONE - * - * Return values: NONE - */ - -#ifdef RDB_BREAK_IN - extern uint32_t trap_table[]; -#endif - -void console_initialize_interrupts( void ) -{ - Ring_buffer_Initialize( &TX_Buffer[ 0 ] ); - Ring_buffer_Initialize( &TX_Buffer[ 1 ] ); - - Is_TX_active[ 0 ] = FALSE; - Is_TX_active[ 1 ] = FALSE; - - atexit( console_exit ); - - LEON_REG.UART_Control_1 |= LEON_REG_UART_CTRL_RI | LEON_REG_UART_CTRL_TI; - LEON_REG.UART_Control_2 |= LEON_REG_UART_CTRL_RI | LEON_REG_UART_CTRL_TI; - - set_vector( console_isr_a, CONSOLE_UART_1_TRAP, 1 ); -#ifdef RDB_BREAK_IN - if (trap_table[0x150/4] == 0x91d02000) -#endif - set_vector( console_isr_b, CONSOLE_UART_2_TRAP, 1 ); -} - -/* - * console_outbyte_interrupt - * - * This routine transmits a character out. - * - * Input parameters: - * port - port to transmit character to - * ch - character to be transmitted - * - * Output parameters: NONE - * - * Return values: NONE - */ - -void console_outbyte_interrupt( - int port, - char ch -) -{ - /* - * If this is the first character then we need to prime the pump - */ - - if ( Is_TX_active[ port ] == FALSE ) { - Is_TX_active[ port ] = TRUE; - console_outbyte_polled( port, ch ); - return; - } - - while ( Ring_buffer_Is_full( &TX_Buffer[ port ] ) ); - - Ring_buffer_Add_character( &TX_Buffer[ port ], ch ); -} - -#endif /* CONSOLE_USE_INTERRUPTS */ - -/* - * Console Termios Support Entry Points - * - */ - -int console_write_support (int minor, const char *buf, int len) -{ - int nwrite = 0; - - while (nwrite < len) { -#if (CONSOLE_USE_INTERRUPTS) - console_outbyte_interrupt( minor, *buf++ ); -#else - console_outbyte_polled( minor, *buf++ ); -#endif - nwrite++; - } - return nwrite; -} - -/* - * Console Device Driver Entry Points - * - */ - -rtems_device_driver console_initialize( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *arg -) -{ - rtems_status_code status; - - rtems_termios_initialize(); - - /* - * Register Device Names - */ - - status = rtems_io_register_name( "/dev/console", major, 0 ); - if (status != RTEMS_SUCCESSFUL) - rtems_fatal_error_occurred(status); - - status = rtems_io_register_name( "/dev/console_b", major, 1 ); - if (status != RTEMS_SUCCESSFUL) - rtems_fatal_error_occurred(status); - - /* - * Initialize Hardware - */ - - LEON_REG.UART_Control_1 |= LEON_REG_UART_CTRL_RE | LEON_REG_UART_CTRL_TE; - LEON_REG.UART_Control_2 |= LEON_REG_UART_CTRL_RE | LEON_REG_UART_CTRL_TE | - LEON_REG_UART_CTRL_RI; /* rx irq default enable for remote debugger */ - LEON_REG.UART_Status_1 = 0; - LEON_REG.UART_Status_2 = 0; -#if (CONSOLE_USE_INTERRUPTS) - console_initialize_interrupts(); -#endif - - return RTEMS_SUCCESSFUL; -} - -rtems_device_driver console_open( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -) -{ - rtems_status_code sc; -#if (CONSOLE_USE_INTERRUPTS) - rtems_libio_open_close_args_t *args = arg; - static const rtems_termios_callbacks intrCallbacks = { - NULL, /* firstOpen */ - NULL, /* lastClose */ - NULL, /* pollRead */ - console_write_support, /* write */ - NULL, /* setAttributes */ - NULL, /* stopRemoteTx */ - NULL, /* startRemoteTx */ - 0 /* outputUsesInterrupts */ - }; -#else - static const rtems_termios_callbacks pollCallbacks = { - NULL, /* firstOpen */ - NULL, /* lastClose */ - console_inbyte_nonblocking, /* pollRead */ - console_write_support, /* write */ - NULL, /* setAttributes */ - NULL, /* stopRemoteTx */ - NULL, /* startRemoteTx */ - 0 /* outputUsesInterrupts */ - }; -#endif - - assert( minor <= 1 ); - if ( minor > 2 ) - return RTEMS_INVALID_NUMBER; - -#if (CONSOLE_USE_INTERRUPTS) - sc = rtems_termios_open (major, minor, arg, &intrCallbacks); - - console_termios_data[ minor ] = args->iop->data1; -#else - sc = rtems_termios_open (major, minor, arg, &pollCallbacks); -#endif - - return RTEMS_SUCCESSFUL; -} - -rtems_device_driver console_close( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -) -{ - 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); -} |