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arc/cache: really do invalidate_dcache_all() even if IOC exists 

invalidate_dcache_all() could be used in different use-cases
and what is especially important most of those cases won't be
related to DMAed data to or from peripherals, i.e. we'll be doing
invalidation of data used purely by CPU cores.

Given that IOC engine only snoops data that goes through DMA
we need to care ourselves about data used only by CPU cores
and so remove dependency on IOC from invalidate_dcache_all()
and always do real invalidation.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
This commit is contained in:
Alexey Brodkin 2016-06-08 07:57:19 +03:00
parent 6b3943f1b0
commit bd91508b50
1 changed files with 2 additions and 5 deletions
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7
arch/arc/lib/cache.c
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@ -417,13 +417,10 @@ void flush_cache(unsigned long start, unsigned long size)
void invalidate_dcache_all(void)
{
#ifdef CONFIG_ISA_ARCV2
if (!ioc_exists)
#endif
__dc_entire_op(OP_INV);
__dc_entire_op(OP_INV);
#ifdef CONFIG_ISA_ARCV2
if (slc_exists && !ioc_exists)
if (slc_exists)
__slc_entire_op(OP_INV);
#endif
}