summaryrefslogtreecommitdiffstats
path: root/c/src/lib/libcpu/powerpc/mpc5xx/console-generic/console-generic.c
diff options
context:
space:
mode:
Diffstat (limited to 'c/src/lib/libcpu/powerpc/mpc5xx/console-generic/console-generic.c')
-rw-r--r--c/src/lib/libcpu/powerpc/mpc5xx/console-generic/console-generic.c317
1 files changed, 0 insertions, 317 deletions
diff --git a/c/src/lib/libcpu/powerpc/mpc5xx/console-generic/console-generic.c b/c/src/lib/libcpu/powerpc/mpc5xx/console-generic/console-generic.c
deleted file mode 100644
index 7e1629b714..0000000000
--- a/c/src/lib/libcpu/powerpc/mpc5xx/console-generic/console-generic.c
+++ /dev/null
@@ -1,317 +0,0 @@
-/*
- * General Serial I/O functions.
- *
- * This file contains the functions for performing serial I/O. The actual
- * system calls (console_*) should be in the BSP part of the source tree.
- * That way different BSPs can use whichever SCI they wish for /dev/console.
- *
- * On-chip resources used:
- * resource minor note
- * SCI1 0
- * SCI2 1
- */
-
-/*
- * MPC5xx 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/libcpu/powerpc/mpc8xx/console_generic/console_generic.c:
- * Author: Jay Monkman (jmonkman@frasca.com)
- * Copyright (C) 1998 by Frasca International, Inc.
- *
- * Derived from c/src/lib/libbsp/m68k/gen360/console/console.c written by:
- * W. Eric Norum
- * Saskatchewan Accelerator Laboratory
- * University of Saskatchewan
- * Saskatoon, Saskatchewan, CANADA
- * eric@skatter.usask.ca
- *
- * COPYRIGHT (c) 1989-1998.
- * On-Line Applications Research Corporation (OAR).
- *
- * Modifications by Darlene Stewart <Darlene.Stewart@iit.nrc.ca>
- * and Charles-Antoine Gauthier <charles.gauthier@iit.nrc.ca>
- * Copyright (c) 1999, National Research Council of Canada
- *
- * 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 <stdlib.h>
-#include <unistd.h>
-#include <termios.h>
-#include <rtems.h>
-#include <rtems/libio.h>
-#include <rtems/bspIo.h> /* for printk */
-#include <mpc5xx.h>
-#include <mpc5xx/console.h>
-#include <bsp/irq.h>
-
-
-/*
- * SCI port descriptor table.
- */
-typedef struct
-{
- volatile m5xxSCIRegisters_t *regs; /* hardware registers */
- struct rtems_termios_tty *ttyp; /* termios data for this port */
-} sci_desc;
-
-static sci_desc sci_descs[] = {
- { &imb.qsmcm.sci1, 0 }, /* SCI 1 */
- { &imb.qsmcm.sci2, 0 }, /* SCI 2 */
-};
-
-/*
- * Number of SCI port initialization calls made so far. Used to avoid
- * installing the common interrupt handler more than once.
- */
-int init_calls = 0;
-
-/*
- * Default configuration.
- */
-static struct termios default_termios = {
- 0, /* input mode flags */
- 0, /* output mode flags */
- 0, /* local mode flags */
- 0, /* line discipline */
- { 0 }, /* control characters */
- CS8 | CREAD | CLOCAL | B9600, /* control mode flags */
-};
-
-
-extern uint32_t bsp_clock_speed;
-
-/*
- * Termios callback functions
- */
-
-int
-m5xx_uart_firstOpen(
- int major,
- int minor,
- void *arg
-)
-{
- rtems_libio_open_close_args_t *args = arg;
- sci_desc* desc = &sci_descs[minor];
- struct rtems_termios_tty *tty = args->iop->data1;
-
- desc->ttyp = tty; /* connect tty */
- if ( tty->device.outputUsesInterrupts == TERMIOS_IRQ_DRIVEN)
- desc->regs->sccr1 |= QSMCM_SCI_RIE; /* enable rx interrupt */
-
- return RTEMS_SUCCESSFUL;
-}
-
-int
-m5xx_uart_lastClose(
- int major,
- int minor,
- void* arg
-)
-{
- sci_desc* desc = &sci_descs[minor];
-
- desc->regs->sccr1 &= ~(QSMCM_SCI_RIE | QSMCM_SCI_TIE); /* disable all */
- desc->ttyp = NULL; /* disconnect tty */
-
- return RTEMS_SUCCESSFUL;
-}
-
-int
-m5xx_uart_pollRead(
- int minor
-)
-{
- volatile m5xxSCIRegisters_t *regs = sci_descs[minor].regs;
- int c = -1;
-
- if ( regs ) {
- while ( (regs->scsr & QSMCM_SCI_RDRF) == 0 )
- ;
- c = regs->scdr;
- }
-
- return c;
-}
-
-ssize_t m5xx_uart_write(
- int minor,
- const char *buf,
- size_t len
-)
-{
- if (len > 0) {
- volatile m5xxSCIRegisters_t *regs = sci_descs[minor].regs;
-
- regs->scdr = *buf; /* start transmission */
- regs->sccr1 |= QSMCM_SCI_TIE; /* enable interrupt */
- }
-
- return 0;
-}
-
-ssize_t m5xx_uart_pollWrite(
- int minor,
- const char *buf,
- size_t len
-)
-{
- volatile m5xxSCIRegisters_t *regs = sci_descs[minor].regs;
- size_t retval = len;
-
- while ( len-- ) {
- while ( (regs->scsr & QSMCM_SCI_TDRE) == 0 )
- ;
- regs->scdr = *buf++;
- }
-
- return retval;
-}
-
-int
-m5xx_uart_setAttributes(
- int minor,
- const struct termios *t
-)
-{
- uint16_t sccr0 = sci_descs[minor].regs->sccr0;
- uint16_t sccr1 = sci_descs[minor].regs->sccr1;
- int baud;
-
- /*
- * Check that port number is valid
- */
- if ( (minor < SCI1_MINOR) || (minor > SCI2_MINOR) )
- return RTEMS_INVALID_NUMBER;
-
- /* Baud rate */
- baud = rtems_termios_baud_to_number( t->c_ospeed );
- if (baud > 0) {
- sccr0 &= ~QSMCM_SCI_BAUD(-1);
- sccr0 |= QSMCM_SCI_BAUD((bsp_clock_speed + (16 * baud)) / (32 * baud));
- }
-
- /* Number of data bits -- not available with MPC5xx SCI */
- switch ( t->c_cflag & CSIZE ) {
- case CS5: break;
- case CS6: break;
- case CS7: break;
- case CS8: break;
- }
-
- /* Stop bits -- not easily available with MPC5xx SCI */
- if ( t->c_cflag & CSTOPB ) {
- /* Two stop bits */
- } else {
- /* One stop bit */
- }
-
- /* Parity */
- if ( t->c_cflag & PARENB )
- sccr1 |= QSMCM_SCI_PE;
- else
- sccr1 &= ~QSMCM_SCI_PE;
-
- if ( t->c_cflag & PARODD )
- sccr1 |= QSMCM_SCI_PT;
- else
- sccr1 &= ~QSMCM_SCI_PT;
-
- /* Transmitter and receiver enable */
- sccr1 |= QSMCM_SCI_TE;
- if ( t->c_cflag & CREAD )
- sccr1 |= QSMCM_SCI_RE;
- else
- sccr1 &= ~QSMCM_SCI_RE;
-
- /* Write hardware registers */
- sci_descs[minor].regs->sccr0 = sccr0;
- sci_descs[minor].regs->sccr1 = sccr1;
-
- return RTEMS_SUCCESSFUL;
-}
-
-
-/*
- * Interrupt handling.
- */
-static void
-m5xx_sci_interrupt_handler (rtems_irq_hdl_param unused)
-{
- int minor;
-
- for ( minor = 0; minor < NUM_PORTS; minor++ ) {
- sci_desc *desc = &sci_descs[minor];
- int sccr1 = desc->regs->sccr1;
- int scsr = desc->regs->scsr;
-
- /*
- * Character received?
- */
- if ((sccr1 & QSMCM_SCI_RIE) && (scsr & QSMCM_SCI_RDRF)) {
- char c = desc->regs->scdr;
- rtems_termios_enqueue_raw_characters(desc->ttyp, &c, 1);
- }
- /*
- * Transmitter empty?
- */
- if ((sccr1 & QSMCM_SCI_TIE) && (scsr & QSMCM_SCI_TDRE)) {
- desc->regs->sccr1 &= ~QSMCM_SCI_TIE;
- rtems_termios_dequeue_characters (desc->ttyp, 1);
- }
- }
-}
-
-static void m5xx_sci_nop(const rtems_irq_connect_data* ptr)
-{
-}
-
-static int m5xx_sci_isOn(const rtems_irq_connect_data* ptr)
-{
- return 1;
-}
-
-/*
- * Basic initialization.
- */
-
-void
-m5xx_uart_initialize (int minor)
-{
- /*
- * Check that minor number is valid.
- */
- if ( (minor < SCI1_MINOR) || (minor > SCI2_MINOR) )
- return;
-
- /*
- * Configure and enable receiver and transmitter.
- */
- m5xx_uart_setAttributes(minor, &default_termios);
-
- /*
- * Connect interrupt if not yet done.
- */
- if ( init_calls++ == 0 ) {
- rtems_irq_connect_data irq_data;
-
- irq_data.name = CPU_IRQ_SCI;
- irq_data.hdl = m5xx_sci_interrupt_handler;
- irq_data.on = m5xx_sci_nop; /* can't enable both channels here */
- irq_data.off = m5xx_sci_nop; /* can't disable both channels here */
- irq_data.isOn = m5xx_sci_isOn;
-
- if (!CPU_install_rtems_irq_handler (&irq_data)) {
- printk("Unable to connect SCI Irq handler\n");
- rtems_fatal_error_occurred(1);
- }
-
- imb.qsmcm.qdsci_il = /* set interrupt level in port */
- QSMCM_ILDSCI(CPU_irq_level_from_symbolic_name(CPU_IRQ_SCI));
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-06 08:38:53 +0000