diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/mvme2307/console/console.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mvme2307/console/console.c | 442 |
1 files changed, 0 insertions, 442 deletions
diff --git a/c/src/lib/libbsp/powerpc/mvme2307/console/console.c b/c/src/lib/libbsp/powerpc/mvme2307/console/console.c deleted file mode 100644 index 4d15691cb5..0000000000 --- a/c/src/lib/libbsp/powerpc/mvme2307/console/console.c +++ /dev/null @@ -1,442 +0,0 @@ -/* - * This file contains the hardware specific portions of the TTY driver - * for the serial port on the MVME230x. - * - * COPYRIGHT (c) 1989-1997. - * On-Line Applications Research Corporation (OAR). - * Copyright assigned to U.S. Government, 1994. - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.OARcorp.com/rtems/license.html. - * - * $Id$ - */ - -#include <termios.h> -#include <bsp.h> -#include <rtems/libio.h> -#include <stdlib.h> - -/* PC16550D register definitions */ -#define UART_BASE_ADDR ((char *) IO_TO_LOCAL(0x03f8)) - -#define RBR 0 -#define THR 0 -#define DLL 0 -#define DLM 1 - -#define LCR 3 -# define FIVE_BITS 0x2 -# define SIX_BITS 0x2 -# define SEVEN_BITS 0x2 -# define EIGHT_BITS 0x3 -# define ONE_STOP_BIT 0x0 -# define TWO_STOP_BITS 0x4 -# define NO_PARITY 0x00 -# define ODD_PARITY 0x08 -# define EVEN_PARITY 0x18 -# define DLAB 0x80 - -#define LSR 5 -# define DR 0x01 -# define OE 0x02 -# define PE 0x04 -# define FE 0x08 -# define BI 0x10 -# define THRE 0x20 -# define TEMT 0x40 -# define ERR_IN_FIFO 0x40 - -#define FCR 2 -# define ENABLE_FIFOS 0x01 -# define RESET_RC_FIFO 0x02 -# define RESET_TX_FIFO 0x04 -# define FIFO_MODE_1 0x08 -# define RX_TRIGGER_1 0x00 -# define RX_TRIGGER_4 0x40 -# define RX_TRIGGER_8 0x80 -# define RX_TRIGGER_14 0xC0 - -#define IIR 2 -# define NO_INTS_PENDING 0x01 -# define RX_ERROR 0x06 -# define RX_DATA_READY 0x04 -# define TX_NOT_FULL 0x02 -# define MODEM_STATUS 0x00 -# define INT_ID_MASK 0x06 - -#define IER 1 -# define ENA_RX_READY_INT 0x1 -# define ENA_TX_EMPTY_INT 0x2 -# define ENA_RX_ERROR_INT 0x4 -# define ENA_MODEM_STATUS_INT 0x8 - -#define MSR 6 -# define DELTA_CTS 0x01 -# define DELTA_DSR 0x02 -# define END_OF_RING 0x04 -# define DELTA_DCD 0x08 -# define CTS 0x10 -# define DSR 0x20 -# define RING 0x40 -# define DCD 0x80 - -#define MCR 4 -# define DTR 0x01 -# define RTS 0x02 -# define OUT1 0x04 -# define OUT2 0x08 -# define LOOPBACK 0x10 - -#define SCR 7 - -int use_polled_io = CONSOLE_USE_POLLED; -void *tty_ptr_for_irq; - -/* - * Hardware-dependent portion of tcsetattr(). - */ -static int -setAttributes (int minor, const struct termios *t) -{ - int divisor; - volatile char *uart = UART_BASE_ADDR; - char lcr_image = 0; - - /* set character size */ - switch (t->c_cflag & CSIZE) { - case CS5: lcr_image = FIVE_BITS; break; - case CS6: lcr_image = SIX_BITS; break; - case CS7: lcr_image = SEVEN_BITS; break; - case CS8: lcr_image = EIGHT_BITS; break; - } - - /* set number of stop bits */ - if (t->c_cflag & CSTOPB) { - lcr_image |= TWO_STOP_BITS; - } else { - lcr_image |= ONE_STOP_BIT; - } - - /* set parity */ - if ((t->c_cflag & PARENB) == 0) { - lcr_image |= NO_PARITY; - } else if (t->c_cflag & PARODD) { - lcr_image |= ODD_PARITY; - } else { - lcr_image |= EVEN_PARITY; - } - - /* set the baud rate */ - switch (t->c_cflag & CBAUD) { - default: divisor = -1; break; - case B50: divisor = 2304; break; - case B75: divisor = 1536; break; - case B110: divisor = 1047; break; - case B134: divisor = 857; break; - case B150: divisor = 768; break; - case B200: divisor = 576; break; - case B300: divisor = 384; break; - case B600: divisor = 192; break; - case B1200: divisor = 96; break; - case B1800: divisor = 64; break; - case B2400: divisor = 48; break; - case B4800: divisor = 24; break; - case B9600: divisor = 12; break; - case B19200: divisor = 6; break; - case B38400: divisor = 3; break; - case B57600: divisor = 2; break; - case B115200: divisor = -1; break; - case B230400: divisor = -1; break; - case B460800: divisor = -1; break; - } - if (divisor > 0) { - uart[LCR] = (lcr_image |= DLAB); - uart[DLM] = divisor >> 8; - uart[DLL] = divisor; - lcr_image &= ~DLAB; - } - - /* activate the new configuration */ - uart[LCR] = lcr_image; - return 0; -} - -/* - * Interrupt handler - */ -static rtems_isr consoleInterruptHandler (rtems_vector_number v) -{ - volatile char *uart = UART_BASE_ADDR; - volatile char ignore; - char buffer[16], iir_image; - int len; - - while (((iir_image = uart[IIR]) & NO_INTS_PENDING) == 0) { - switch (iir_image & INT_ID_MASK) { - case RX_ERROR: - /* - * read the line status register to clear condition. - * nothing done with the information at this point. - */ - ignore = uart[LSR]; - break; - case RX_DATA_READY: - /* - * empty the receive fifo and transfer bytes to termios layer - */ - len = 0; - do { - buffer[len++] = uart[RBR]; - } while (len < sizeof(buffer) && (uart[LSR] & DR)); - rtems_termios_enqueue_raw_characters(tty_ptr_for_irq, - buffer, len); - break; - case TX_NOT_FULL: - /* - * notify termios layer that characters have been sent - */ - len = uart[SCR]; - /* we'll get one interrupt when we start - ignore it */ - if (len) { - rtems_termios_dequeue_characters(tty_ptr_for_irq, len); - } - break; - case MODEM_STATUS: - /* - * read the modem status register to clear condition. - * nothing done with the information at this point. - */ - ignore = uart[MSR]; - break; - } - } -} - -/* - * console_inbyte_nonblocking - * - * This routine polls for a character. - */ - -int console_inbyte_nonblocking( - int port -) -{ - volatile char *uart = UART_BASE_ADDR; - - if (uart[LSR] & DR) { - return uart[RBR]; - } else { - return -1; - } -} - - -/* - * Console Termios Support Entry Points - * - */ - -int console_write_polled ( - int minor, - const char *buf, - int len -) -{ - int nwrite = 0; - volatile char *uart = UART_BASE_ADDR; - - while (nwrite < len) { - /* wait as long as needed for transmit buffer to empty */ - while ((uart[LSR] & THRE) == 0) ; - uart[THR] = *buf++; - nwrite++; - } - - /* return value seems to be ignored by termios layer, we'll return count */ - return nwrite; -} - -int console_write_interrupts ( - int minor, - const char *buf, - int len -) -{ - const int FIFO_depth = 16; - int nwrite; - volatile char *uart = UART_BASE_ADDR; - - /* write up to len characters, stopping if FIFO fills */ - for (nwrite = 0; nwrite < len && nwrite < FIFO_depth; nwrite++) { - uart[THR] = *buf++; - } - - /* save count of bytes sent so interrupt can report it to termios layer */ - uart[SCR] = nwrite; - - /* return value seems to be ignored by termios layer, we'll return count */ - return nwrite; -} - -/* - * Console Device Driver Entry Points - * - */ - -/* - * 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; - volatile char *uart = UART_BASE_ADDR; - - rtems_termios_initialize(); - - /* - * Register Device Names - */ - - status = rtems_io_register_name( "/dev/console", major, 0 ); - if (status != RTEMS_SUCCESSFUL) { - rtems_fatal_error_occurred(status); - } - /* default mode: 9600 bps, 8 bits, 1 stop, no parity */ -# define DEFAULT_MODE (EIGHT_BITS | ONE_STOP_BIT | NO_PARITY) - uart[LCR] = DEFAULT_MODE | DLAB; - uart[DLM] = 0; - uart[DLL] = 12; - uart[LCR] = DEFAULT_MODE; - - /* enable the receive and transmit FIFOs */ - uart[FCR] = ENABLE_FIFOS | RESET_RC_FIFO | RESET_TX_FIFO | RX_TRIGGER_1; - - /* set modem control lines */ - uart[MCR] = DTR | RTS; - - /* zero the scratch register - this will hold a count of tx characters */ - uart[SCR] = 0; - - /* initialize interrupts */ - if (!use_polled_io) { - rtems_isr_entry old_handler; - rtems_status_code sc; - - sc = bsp_interrupt_catch(consoleInterruptHandler, IRQ_UART, - &old_handler); - sc = bsp_interrupt_enable(IRQ_UART, PRIORITY_ISA_INT); - uart[IER] = ENA_RX_READY_INT | ENA_TX_EMPTY_INT; - } else { - uart[IER] = 0; - } - 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; - static const rtems_termios_callbacks pollCallbacks = { - NULL, /* firstOpen */ - NULL, /* lastClose */ - console_inbyte_nonblocking, /* pollRead */ - console_write_polled, /* write */ - setAttributes, /* setAttributes */ - NULL, /* stopRemoteTx */ - NULL, /* startRemoteTx */ - 0 /* outputUsesInterrupts */ - }; - static const rtems_termios_callbacks intrCallbacks = { - NULL, /* firstOpen */ - NULL, /* lastClose */ - NULL, /* pollRead */ - console_write_interrupts, /* write */ - setAttributes, /* setAttributes */ - NULL, /* stopRemoteTx */ - NULL, /* startRemoteTx */ - 1 /* outputUsesInterrupts */ - }; - - - if ( minor > 1 ) - return RTEMS_INVALID_NUMBER; - - if (use_polled_io) { - sc = rtems_termios_open (major, minor, arg, &pollCallbacks ); - } else { - sc = rtems_termios_open (major, minor, arg, &intrCallbacks ); - tty_ptr_for_irq = ((rtems_libio_open_close_args_t *)arg)->iop->data1; - } - return RTEMS_SUCCESSFUL; -} - -/* - * Close the device - */ -rtems_device_driver console_close( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -) -{ - return rtems_termios_close (arg); -} - -/* - * Read from the device - */ -rtems_device_driver console_read( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -) -{ - return rtems_termios_read (arg); -} - -/* - * Write to the device - */ -rtems_device_driver console_write( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -) -{ - return rtems_termios_write (arg); -} - -/* - * Handle ioctl request. - */ -rtems_device_driver console_control( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -) -{ - return rtems_termios_ioctl (arg); -} - -/* - * Reserve resources consumed by this driver - */ -void console_reserve_resources( - rtems_configuration_table *configuration -) -{ - rtems_termios_reserve_resources( configuration, 1 ); -} |