diff options
| author | Arve Hjønnevåg <arve@android.com> | 2009-06-09 20:17:45 -0700 |
|---|---|---|
| committer | Arve Hjønnevåg <arve@android.com> | 2009-06-10 15:07:35 -0700 |
| commit | bf6260e1eb85e908fa955a05b506e65ffb7f114d (patch) | |
| tree | fbba90a1c48ea60713260f71cc0480c6c9acf12f /arch/arm/mm | |
| parent | 0d8750c3bfd8b6240ff663e7b1bd70ef92fbacfc (diff) | |
[ARM] Optionally flush entire dcache from v6_dma_flush_range
If CACHE_FLUSH_RANGE_LIMIT is defined, then the entire dcache will
be flushed if the requested range is larger than this limit.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/cache-v6.S | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/mm/cache-v6.S b/arch/arm/mm/cache-v6.S index 2c6c2a7c05a0..13936b2750f6 100644 --- a/arch/arm/mm/cache-v6.S +++ b/arch/arm/mm/cache-v6.S @@ -199,6 +199,11 @@ ENTRY(v6_dma_clean_range) * - end - virtual end address of region */ ENTRY(v6_dma_flush_range) +#ifdef CONFIG_CACHE_FLUSH_RANGE_LIMIT + sub r2, r1, r0 + cmp r2, #CONFIG_CACHE_FLUSH_RANGE_LIMIT + bhi v6_dma_flush_dcache_all +#endif bic r0, r0, #D_CACHE_LINE_SIZE - 1 1: #ifdef HARVARD_CACHE @@ -213,6 +218,18 @@ ENTRY(v6_dma_flush_range) mcr p15, 0, r0, c7, c10, 4 @ drain write buffer mov pc, lr +#ifdef CONFIG_CACHE_FLUSH_RANGE_LIMIT +v6_dma_flush_dcache_all: + mov r0, #0 +#ifdef HARVARD_CACHE + mcr p15, 0, r0, c7, c14, 0 @ D cache clean+invalidate +#else + mcr p15, 0, r0, c7, c15, 0 @ Cache clean+invalidate +#endif + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mov pc, lr +#endif + __INITDATA .type v6_cache_fns, #object |