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-rw-r--r--c/src/lib/libbsp/powerpc/mpc55xxevb/console/console-esci.c354
1 files changed, 0 insertions, 354 deletions
diff --git a/c/src/lib/libbsp/powerpc/mpc55xxevb/console/console-esci.c b/c/src/lib/libbsp/powerpc/mpc55xxevb/console/console-esci.c
deleted file mode 100644
index 9e6646fb65..0000000000
--- a/c/src/lib/libbsp/powerpc/mpc55xxevb/console/console-esci.c
+++ /dev/null
@@ -1,354 +0,0 @@
-/**
- * @file
- *
- * @brief Console ESCI implementation.
- */
-
-/*
- * Copyright (c) 2008-2012 embedded brains GmbH. All rights reserved.
- *
- * embedded brains GmbH
- * Obere Lagerstr. 30
- * 82178 Puchheim
- * Germany
- * <rtems@embedded-brains.de>
- *
- * 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/console-esci.h>
-
-#include <bsp.h>
-#include <bsp/fatal.h>
-#include <bsp/irq.h>
-
-#ifdef MPC55XX_HAS_ESCI
-
-mpc55xx_esci_context mpc55xx_esci_devices [] = {
- {
- .regs = &ESCI_A,
- .irq = MPC55XX_IRQ_ESCI(0)
- }
- #ifdef ESCI_B
- , {
- .regs = &ESCI_B,
- .irq = MPC55XX_IRQ_ESCI(1)
- }
- #endif
- #ifdef ESCI_C
- , {
- .regs = &ESCI_C,
- .irq = MPC55XX_IRQ_ESCI(2)
- }
- #endif
- #ifdef ESCI_D
- , {
- .regs = &ESCI_D,
- .irq = MPC55XX_IRQ_ESCI(3)
- }
- #endif
-};
-
-static void mpc55xx_esci_poll_write(int minor, char c)
-{
- mpc55xx_esci_context *self = console_generic_get_context(minor);
- const union ESCI_SR_tag clear_tdre = { .B = { .TDRE = 1 } };
- volatile struct ESCI_tag *regs = self->regs;
- rtems_interrupt_level level;
- bool done = false;
- bool wait_for_transmit_done = false;
-
- rtems_interrupt_disable(level);
- if (self->transmit_nest_level == 0) {
- union ESCI_CR1_tag cr1 = { .R = regs->CR1.R };
-
- if (cr1.B.TIE != 0) {
- cr1.B.TIE = 0;
- regs->CR1.R = cr1.R;
- wait_for_transmit_done = !self->transmit_in_progress;
- self->transmit_nest_level = 1;
- }
- } else {
- ++self->transmit_nest_level;
- }
- rtems_interrupt_enable(level);
-
- while (!done) {
- rtems_interrupt_disable(level);
- bool tx = self->transmit_in_progress;
- if (!tx || (tx && regs->SR.B.TDRE)) {
- regs->SR.R = clear_tdre.R;
- regs->DR.B.D = c;
- self->transmit_in_progress = true;
- done = true;
- }
- rtems_interrupt_enable(level);
- }
-
- done = false;
- while (!done) {
- rtems_interrupt_disable(level);
- if (wait_for_transmit_done) {
- if (regs->SR.B.TDRE) {
- regs->SR.R = clear_tdre.R;
- self->transmit_in_progress = false;
- done = true;
- }
- } else {
- done = true;
- }
-
- if (done && self->transmit_nest_level > 0) {
- --self->transmit_nest_level;
-
- if (self->transmit_nest_level == 0) {
- union ESCI_CR1_tag cr1 = { .R = regs->CR1.R };
-
- cr1.B.TIE = 1;
- regs->CR1.R = cr1.R;
- }
- }
- rtems_interrupt_enable(level);
- }
-}
-
-static inline void mpc55xx_esci_interrupts_clear_and_enable(
- mpc55xx_esci_context *self
-)
-{
- volatile struct ESCI_tag *regs = self->regs;
- union ESCI_CR1_tag cr1 = MPC55XX_ZERO_FLAGS;
- rtems_interrupt_level level;
-
- rtems_interrupt_disable(level);
- cr1.R = regs->CR1.R;
- cr1.B.RIE = 1;
- cr1.B.TIE = 1;
- regs->CR1.R = cr1.R;
- regs->SR.R = regs->SR.R;
- rtems_interrupt_enable(level);
-}
-
-static inline void mpc55xx_esci_interrupts_disable(mpc55xx_esci_context *self)
-{
- volatile struct ESCI_tag *regs = self->regs;
- union ESCI_CR1_tag cr1 = MPC55XX_ZERO_FLAGS;
- rtems_interrupt_level level;
-
- rtems_interrupt_disable(level);
- cr1.R = regs->CR1.R;
- cr1.B.RIE = 0;
- cr1.B.TIE = 0;
- regs->CR1.R = cr1.R;
- rtems_interrupt_enable(level);
-}
-
-static void mpc55xx_esci_interrupt_handler(void *arg)
-{
- mpc55xx_esci_context *self = arg;
- volatile struct ESCI_tag *regs = self->regs;
- union ESCI_SR_tag sr = MPC55XX_ZERO_FLAGS;
- union ESCI_SR_tag active = MPC55XX_ZERO_FLAGS;
- rtems_interrupt_level level;
-
- /* Status */
- sr.R = regs->SR.R;
-
- /* Receive data register full? */
- if (sr.B.RDRF != 0) {
- active.B.RDRF = 1;
- }
-
- /* Transmit data register empty? */
- if (sr.B.TDRE != 0) {
- active.B.TDRE = 1;
- }
-
- /* Clear flags */
- rtems_interrupt_disable(level);
- regs->SR.R = active.R;
- self->transmit_in_progress = false;
- rtems_interrupt_enable(level);
-
- /* Enqueue */
- if (active.B.RDRF != 0) {
- char c = regs->DR.B.D;
- rtems_termios_enqueue_raw_characters(self->tty, &c, 1);
- }
-
- /* Dequeue */
- if (active.B.TDRE != 0) {
- rtems_termios_dequeue_characters(self->tty, 1);
- }
-}
-
-static int mpc55xx_esci_set_attributes(int minor, const struct termios *t)
-{
- mpc55xx_esci_context *self = console_generic_get_context(minor);
- volatile struct ESCI_tag *regs = self->regs;
- union ESCI_CR1_tag cr1 = { .R = regs->CR1.R };
- union ESCI_CR2_tag cr2 = MPC55XX_ZERO_FLAGS;
- rtems_termios_baud_t br = rtems_termios_baud_to_number(t->c_ospeed);
-
- /* Enable module */
- cr2.B.MDIS = 0;
-
- /* Interrupts */
- cr1.B.TCIE = 0;
- cr1.B.ILIE = 0;
- cr2.B.IEBERR = 0;
- cr2.B.ORIE = 0;
- cr2.B.NFIE = 0;
- cr2.B.FEIE = 0;
- cr2.B.PFIE = 0;
-
- /* Disable receiver wake-up standby */
- cr1.B.RWU = 0;
-
- /* Disable DMA channels */
- cr2.B.RXDMA = 0;
- cr2.B.TXDMA = 0;
-
- /* Idle line type */
- cr1.B.ILT = 0;
-
- /* Disable loops */
- cr1.B.LOOPS = 0;
-
- /* Enable or disable receiver */
- cr1.B.RE = (t->c_cflag & CREAD) ? 1 : 0;
-
- /* Enable transmitter */
- cr1.B.TE = 1;
-
- /* Baud rate */
- if (br > 0) {
- br = bsp_clock_speed / (16 * br);
- br = (br > 8191) ? 8191 : br;
- } else {
- br = 0;
- }
- cr1.B.SBR = br;
-
- /* Number of data bits */
- if ((t->c_cflag & CSIZE) != CS8) {
- return -1;
- }
- cr1.B.M = 0;
-
- /* Parity */
- cr1.B.PE = (t->c_cflag & PARENB) ? 1 : 0;
- cr1.B.PT = (t->c_cflag & PARODD) ? 1 : 0;
-
- /* Stop bits */
- if (t->c_cflag & CSTOPB ) {
- /* Two stop bits */
- return -1;
- }
-
- /* Disable LIN */
- regs->LCR.R = 0;
-
- /* Set control registers */
- regs->CR2.R = cr2.R;
- regs->CR1.R = cr1.R;
-
- return 0;
-}
-
-static int mpc55xx_esci_first_open(int major, int minor, void *arg)
-{
- rtems_status_code sc = RTEMS_SUCCESSFUL;
- int rv = 0;
- mpc55xx_esci_context *self = console_generic_get_context(minor);
- struct rtems_termios_tty *tty = console_generic_get_tty_at_open(arg);
-
- self->tty = tty;
-
- rv = rtems_termios_set_initial_baud(tty, BSP_DEFAULT_BAUD_RATE);
- if (rv != 0) {
- bsp_fatal(MPC55XX_FATAL_CONSOLE_ESCI_BAUD);
- }
-
- rv = mpc55xx_esci_set_attributes(minor, &tty->termios);
- if (rv != 0) {
- bsp_fatal(MPC55XX_FATAL_CONSOLE_ESCI_ATTRIBUTES);
- }
-
- sc = mpc55xx_interrupt_handler_install(
- self->irq,
- "eSCI",
- RTEMS_INTERRUPT_UNIQUE,
- MPC55XX_INTC_DEFAULT_PRIORITY,
- mpc55xx_esci_interrupt_handler,
- self
- );
- if (sc != RTEMS_SUCCESSFUL) {
- bsp_fatal(MPC55XX_FATAL_CONSOLE_ESCI_IRQ_INSTALL);
- }
-
- mpc55xx_esci_interrupts_clear_and_enable(self);
- self->transmit_in_progress = false;
-
- return 0;
-}
-
-static int mpc55xx_esci_last_close(int major, int minor, void* arg)
-{
- mpc55xx_esci_context *self = console_generic_get_context(minor);
-
- mpc55xx_esci_interrupts_disable(self);
- self->tty = NULL;
-
- return 0;
-}
-
-static int mpc55xx_esci_poll_read(int minor)
-{
- mpc55xx_esci_context *self = console_generic_get_context(minor);
- volatile struct ESCI_tag *regs = self->regs;
- union ESCI_SR_tag sr = MPC55XX_ZERO_FLAGS;
- rtems_interrupt_level level;
- int c = -1;
-
- rtems_interrupt_disable(level);
- if (regs->SR.B.RDRF != 0) {
- /* Clear flag */
- sr.B.RDRF = 1;
- regs->SR.R = sr.R;
-
- /* Read */
- c = regs->DR.B.D;
- }
- rtems_interrupt_enable(level);
-
- return c;
-}
-
-static int mpc55xx_esci_write(int minor, const char *out, size_t n)
-{
- if (n > 0) {
- mpc55xx_esci_context *self = console_generic_get_context(minor);
-
- self->regs->DR.B.D = out [0];
- self->transmit_in_progress = true;
- }
-
- return 0;
-}
-
-const console_generic_callbacks mpc55xx_esci_callbacks = {
- .termios_callbacks = {
- .firstOpen = mpc55xx_esci_first_open,
- .lastClose = mpc55xx_esci_last_close,
- .write = mpc55xx_esci_write,
- .setAttributes = mpc55xx_esci_set_attributes,
- .outputUsesInterrupts = TERMIOS_IRQ_DRIVEN
- },
- .poll_read = mpc55xx_esci_poll_read,
- .poll_write = mpc55xx_esci_poll_write
-};
-
-#endif /* MPC55XX_HAS_ESCI */
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