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bsp/tms570: Optimize tms570_debug_console_out()

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Reduce number of interrupt disable/enable actions.

Update #4982.
This commit is contained in:
Sebastian Huber
2023-12-21 15:16:49 +01:00
parent 5a2f64cf34
commit 65831d71ed
1 changed files with 21 additions and 20 deletions
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39
bsps/arm/tms570/console/printk-support.c
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@@ -10,6 +10,7 @@
*/
/*
* Copyright (C) 2023 embedded brains GmbH & Co. KG
* Copyright (C) 2014 Premysl Houdek <kom541000@gmail.com>
*
* Google Summer of Code 2014 at
@@ -55,33 +56,33 @@
*
* @retval Void
*/
static void tms570_debug_console_putc(char ch)
static void tms570_debug_console_out(char ch)
{
tms570_sci_context *ctx = TMS570_CONSOLE;
volatile tms570_sci_t *regs = ctx->regs;
while ( true ) {
rtems_interrupt_level level;
rtems_interrupt_disable(level);
while ( ( regs->FLR & TMS570_SCI_FLR_TXRDY ) == 0) {
rtems_interrupt_flash(level);
/* Wait */
}
regs->TD = ch;
while ( ( regs->FLR & TMS570_SCI_FLR_TX_EMPTY ) == 0) {
rtems_interrupt_flash(level);
}
rtems_interrupt_enable(level);
}
/**
* @brief debug console output
*
* debug functions always use serial dev 0 peripheral
*
* @retval Void
*/
static void tms570_debug_console_out(char c)
{
tms570_debug_console_putc(c);
rtems_interrupt_disable( level );
if ( ( regs->FLR & TMS570_SCI_FLR_TXRDY ) != 0) {
regs->TD = ch;
rtems_interrupt_enable( level );
break;
}
rtems_interrupt_enable( level );
}
while ( ( regs->FLR & TMS570_SCI_FLR_TX_EMPTY ) == 0) {
/* Wait */
}
}
static void tms570_debug_console_init(void)