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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-07-30 09:11:33 +0200 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-07-30 12:25:45 +0200 |
| commit | e9da6e9905e639b0f842a244bc770b48ad0523e9 (patch) | |
| tree | c99beeb259716121dcb388f35f54f99a2a414a92 /arch/arm/mm/mm.h | |
| parent | 5e6cafc83e30f0f70c79a2b7aef237dc57e29f02 (diff) | |
| download | linux-e9da6e9905e639b0f842a244bc770b48ad0523e9.tar.bz2 | |
ARM: dma-mapping: remove custom consistent dma region
This patch changes dma-mapping subsystem to use generic vmalloc areas
for all consistent dma allocations. This increases the total size limit
of the consistent allocations and removes platform hacks and a lot of
duplicated code.
Atomic allocations are served from special pool preallocated on boot,
because vmalloc areas cannot be reliably created in atomic context.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Minchan Kim <minchan@kernel.org>
Diffstat (limited to 'arch/arm/mm/mm.h')
| -rw-r--r-- | arch/arm/mm/mm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h index 2e8a1efdf7b8..6776160618ef 100644 --- a/arch/arm/mm/mm.h +++ b/arch/arm/mm/mm.h @@ -59,6 +59,9 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page #define VM_ARM_MTYPE(mt) ((mt) << 20) #define VM_ARM_MTYPE_MASK (0x1f << 20) +/* consistent regions used by dma_alloc_attrs() */ +#define VM_ARM_DMA_CONSISTENT 0x20000000 + #endif #ifdef CONFIG_ZONE_DMA |