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Diffstat (limited to 'c/src/lib/libbsp/sparc/shared/uart/apbuart_termios.c')
-rw-r--r--c/src/lib/libbsp/sparc/shared/uart/apbuart_termios.c311
1 files changed, 0 insertions, 311 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/uart/apbuart_termios.c b/c/src/lib/libbsp/sparc/shared/uart/apbuart_termios.c
deleted file mode 100644
index 28ece27d9d..0000000000
--- a/c/src/lib/libbsp/sparc/shared/uart/apbuart_termios.c
+++ /dev/null
@@ -1,311 +0,0 @@
-/*
- * COPYRIGHT (c) 1989-1998.
- * On-Line Applications Research Corporation (OAR).
- *
- * Modified for LEON3 BSP.
- * COPYRIGHT (c) 2004.
- * Gaisler Research.
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
-
-#include <bsp/apbuart_termios.h>
-#include <bsp/apbuart.h>
-#include <bsp.h>
-
-static void apbuart_isr(void *arg)
-{
- rtems_termios_tty *tty = arg;
- struct apbuart_context *uart = rtems_termios_get_device_context(tty);
- unsigned int status;
- char data;
-
- /* Get all received characters */
- while ((status=uart->regs->status) & APBUART_STATUS_DR) {
- /* Data has arrived, get new data */
- data = uart->regs->data;
-
- /* Tell termios layer about new character */
- rtems_termios_enqueue_raw_characters(tty, &data, 1);
- }
-
- if (
- (status & APBUART_STATUS_TE)
- && (uart->regs->ctrl & APBUART_CTRL_TI) != 0
- ) {
- /* write_interrupt will get called from this function */
- rtems_termios_dequeue_characters(tty, 1);
- }
-}
-
-static void apbuart_write_support(
- rtems_termios_device_context *base,
- const char *buf,
- size_t len
-)
-{
- struct apbuart_context *uart = (struct apbuart_context *) base;
- int sending;
-
- if (len > 0) {
- /* Enable TX interrupt (interrupt is edge-triggered) */
- uart->regs->ctrl |= APBUART_CTRL_TI;
-
- /* start UART TX, this will result in an interrupt when done */
- uart->regs->data = *buf;
-
- sending = 1;
- } else {
- /* No more to send, disable TX interrupts */
- uart->regs->ctrl &= ~APBUART_CTRL_TI;
-
- /* Tell close that we sent everything */
- sending = 0;
- }
-
- uart->sending = sending;
-}
-
-static void apbuart_write_polled(
- rtems_termios_device_context *base,
- const char *buf,
- size_t len
-)
-{
- struct apbuart_context *uart = (struct apbuart_context *) base;
- size_t nwrite = 0;
-
- while (nwrite < len) {
- apbuart_outbyte_polled(uart->regs, *buf++, 0, 0);
- nwrite++;
- }
-}
-
-static int apbuart_poll_read(rtems_termios_device_context *base)
-{
- struct apbuart_context *uart = (struct apbuart_context *) base;
-
- return apbuart_inbyte_nonblocking(uart->regs);
-}
-
-static bool apbuart_set_attributes(
- rtems_termios_device_context *base,
- const struct termios *t
-)
-{
- struct apbuart_context *uart = (struct apbuart_context *) base;
- rtems_interrupt_lock_context lock_context;
- unsigned int scaler;
- unsigned int ctrl;
- int baud;
-
- switch (t->c_cflag & CSIZE) {
- default:
- case CS5:
- case CS6:
- case CS7:
- /* Hardware doesn't support other than CS8 */
- return false;
- case CS8:
- break;
- }
-
- rtems_termios_device_lock_acquire(base, &lock_context);
-
- /* Read out current value */
- ctrl = uart->regs->ctrl;
-
- switch (t->c_cflag & (PARENB|PARODD)) {
- case (PARENB|PARODD):
- /* Odd parity */
- ctrl |= APBUART_CTRL_PE|APBUART_CTRL_PS;
- break;
-
- case PARENB:
- /* Even parity */
- ctrl &= ~APBUART_CTRL_PS;
- ctrl |= APBUART_CTRL_PE;
- break;
-
- default:
- case 0:
- case PARODD:
- /* No Parity */
- ctrl &= ~(APBUART_CTRL_PS|APBUART_CTRL_PE);
- }
-
- if (!(t->c_cflag & CLOCAL)) {
- ctrl |= APBUART_CTRL_FL;
- } else {
- ctrl &= ~APBUART_CTRL_FL;
- }
-
- /* Update new settings */
- uart->regs->ctrl = ctrl;
-
- rtems_termios_device_lock_release(base, &lock_context);
-
- /* Baud rate */
- baud = rtems_termios_baud_to_number(t->c_ospeed);
- if (baud > 0) {
- /* Calculate Baud rate generator "scaler" number */
- scaler = (((uart->freq_hz * 10) / (baud * 8)) - 5) / 10;
-
- /* Set new baud rate by setting scaler */
- uart->regs->scaler = scaler;
- }
-
- return true;
-}
-
-static void apbuart_set_best_baud(
- const struct apbuart_context *uart,
- struct termios *term
-)
-{
- uint32_t baud = (uart->freq_hz * 10) / ((uart->regs->scaler * 10 + 5) * 8);
-
- rtems_termios_set_best_baud(term, baud);
-}
-
-static bool apbuart_first_open_polled(
- rtems_termios_tty *tty,
- rtems_termios_device_context *base,
- struct termios *term,
- rtems_libio_open_close_args_t *args
-)
-{
- struct apbuart_context *uart = (struct apbuart_context *) base;
-
- apbuart_set_best_baud(uart, term);
-
- /* Initialize UART on opening */
- uart->regs->ctrl |= APBUART_CTRL_RE | APBUART_CTRL_TE;
- uart->regs->status = 0;
-
- return true;
-}
-
-static bool apbuart_first_open_interrupt(
- rtems_termios_tty *tty,
- rtems_termios_device_context *base,
- struct termios *term,
- rtems_libio_open_close_args_t *args
-)
-{
- struct apbuart_context *uart = (struct apbuart_context *) base;
- rtems_status_code sc;
-
- apbuart_set_best_baud(uart, term);
-
- /* Register Interrupt handler */
- sc = rtems_interrupt_handler_install(uart->irq, "console",
- RTEMS_INTERRUPT_SHARED,
- apbuart_isr,
- tty);
- if (sc != RTEMS_SUCCESSFUL)
- return false;
-
- uart->sending = 0;
- /* Enable Receiver and transmitter and Turn on RX interrupts */
- uart->regs->ctrl |= APBUART_CTRL_RE | APBUART_CTRL_TE |
- APBUART_CTRL_RI;
- /* Initialize UART on opening */
- uart->regs->ctrl |= APBUART_CTRL_RE | APBUART_CTRL_TE;
- uart->regs->status = 0;
-
- return true;
-}
-
-static void apbuart_last_close_interrupt(
- rtems_termios_tty *tty,
- rtems_termios_device_context *base,
- rtems_libio_open_close_args_t *args
-)
-{
- struct apbuart_context *uart = (struct apbuart_context *) base;
- rtems_interrupt_lock_context lock_context;
-
- /* Turn off RX interrupts */
- rtems_termios_device_lock_acquire(base, &lock_context);
- uart->regs->ctrl &= ~(APBUART_CTRL_RI);
- rtems_termios_device_lock_release(base, &lock_context);
-
- /**** Flush device ****/
- while (uart->sending) {
- /* Wait until all data has been sent */
- }
-
- /* uninstall ISR */
- rtems_interrupt_handler_remove(uart->irq, apbuart_isr, tty);
-}
-
-/*
- * apbuart_outbyte_polled
- *
- * This routine transmits a character using polling.
- */
-void apbuart_outbyte_polled(
- struct apbuart_regs *regs,
- unsigned char ch,
- int do_cr_on_newline,
- int wait_sent
-)
-{
-send:
- while ( (regs->status & APBUART_STATUS_TE) == 0 ) {
- /* Lower bus utilization while waiting for UART */
- __asm__ volatile ("nop"::); __asm__ volatile ("nop"::);
- __asm__ volatile ("nop"::); __asm__ volatile ("nop"::);
- __asm__ volatile ("nop"::); __asm__ volatile ("nop"::);
- __asm__ volatile ("nop"::); __asm__ volatile ("nop"::);
- }
-
- if ((ch == '\n') && do_cr_on_newline) {
- regs->data = (unsigned int) '\r';
- do_cr_on_newline = 0;
- goto send;
- }
- regs->data = (unsigned int) ch;
-
- /* Wait until the character has been sent? */
- if (wait_sent) {
- while ((regs->status & APBUART_STATUS_TE) == 0)
- ;
- }
-}
-
-/*
- * apbuart_inbyte_nonblocking
- *
- * This routine polls for a character.
- */
-int apbuart_inbyte_nonblocking(struct apbuart_regs *regs)
-{
- /* Clear errors */
- if (regs->status & APBUART_STATUS_ERR)
- regs->status = ~APBUART_STATUS_ERR;
-
- if ((regs->status & APBUART_STATUS_DR) == 0)
- return -1;
- else
- return (int) regs->data;
-}
-
-const rtems_termios_device_handler apbuart_handler_interrupt = {
- .first_open = apbuart_first_open_interrupt,
- .last_close = apbuart_last_close_interrupt,
- .write = apbuart_write_support,
- .set_attributes = apbuart_set_attributes,
- .mode = TERMIOS_IRQ_DRIVEN
-};
-
-const rtems_termios_device_handler apbuart_handler_polled = {
- .first_open = apbuart_first_open_polled,
- .poll_read = apbuart_poll_read,
- .write = apbuart_write_polled,
- .set_attributes = apbuart_set_attributes,
- .mode = TERMIOS_POLLED
-};
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-02 18:12:38 +0000