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Do core interrupt masking in a less general fashion and save some instructions to decrease size and speed things up a little bit. Small fix to a few places where interrupts would get enabled again where they shouldn't have been (context switching calls when disabled).

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16811 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2008-03-26 01:50:41 +00:00
parent 74d678fdbc
commit af395f4db6
61 changed files with 381 additions and 278 deletions
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12
firmware/target/arm/s3c2440/gigabeat-fx/pcm-meg-fx.c
View file

@ -66,27 +66,27 @@ static void _pcm_apply_settings(void)
void pcm_apply_settings(void)
{
int oldstatus = set_fiq_status(FIQ_DISABLED);
int status = disable_fiq_save();
_pcm_apply_settings();
set_fiq_status(oldstatus);
restore_fiq(status);
}
/* For the locks, DMA interrupt must be disabled because the handler
manipulates INTMSK and the operation is not atomic */
void pcm_play_lock(void)
{
int status = set_fiq_status(FIQ_DISABLED);
int status = disable_fiq_save();
if (++dma_play_lock.locked == 1)
INTMSK |= (1<<19); /* Mask the DMA interrupt */
set_fiq_status(status);
restore_fiq(status);
}
void pcm_play_unlock(void)
{
int status = set_fiq_status(FIQ_DISABLED);
int status = disable_fiq_save();
if (--dma_play_lock.locked == 0)
INTMSK &= ~dma_play_lock.state; /* Unmask the DMA interrupt if enabled */
set_fiq_status(status);
restore_fiq(status);
}
void pcm_play_dma_init(void)

4
firmware/target/arm/s3c2440/gigabeat-fx/timer-meg-fx.c
View file

@ -66,7 +66,7 @@ bool __timer_set(long cycles, bool start)
pfn_unregister = NULL;
}
oldlevel = set_irq_level(HIGHEST_IRQ_LEVEL);
oldlevel = disable_irq_save();
TCMPB0 = 0;
TCNTB0 = (unsigned int)cycles / prescaler;
@ -77,7 +77,7 @@ bool __timer_set(long cycles, bool start)
TCFG0 = (TCFG0 & ~0xff) | (prescaler - 1);
TCFG1 = (TCFG1 & ~0xf) | divider;
set_irq_level(oldlevel);
restore_irq(oldlevel);
retval = true;
}