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[MIPS] Use real cache invalidate 

R10k non coherent machines need a real dma cache invalidate to get rid of
speculative stores in cache.  For other machines this promises a slight
speedup.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
hifive-unleashed-5.1
Thomas Bogendoerfer 2007-11-26 23:40:01 +01:00 committed by Ralf Baechle
parent 87353d8ac3
commit e9c33572a9
2 changed files with 9 additions and 2 deletions
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4
arch/mips/mm/c-r4k.c
View File

@ -589,7 +589,7 @@ static void r4k_dma_cache_inv(unsigned long addr, unsigned long size)
if (size >= scache_size)
r4k_blast_scache();
else
blast_scache_range(addr, addr + size);
blast_inv_scache_range(addr, addr + size);
return;
}
@ -597,7 +597,7 @@ static void r4k_dma_cache_inv(unsigned long addr, unsigned long size)
r4k_blast_dcache();
} else {
R4600_HIT_CACHEOP_WAR_IMPL;
blast_dcache_range(addr, addr + size);
blast_inv_dcache_range(addr, addr + size);
}
bc_inv(addr, size);

7
include/asm-mips/r4kcache.h
View File

@ -403,6 +403,13 @@ __BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64)
__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64)
__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128)
__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 16)
__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 32)
__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 16)
__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 32)
__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 64)
__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 128)
/* build blast_xxx_range, protected_blast_xxx_range */
#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot) \
static inline void prot##blast_##pfx##cache##_range(unsigned long start, \