diff options
| author | Benjamin Gaignard <benjamin.gaignard@linaro.org> | 2013-03-22 18:08:30 +0100 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2014-04-21 22:35:21 -0500 |
| commit | ff0de5fc4d12922af9df225b0374b47905c130fb (patch) | |
| tree | 069d6f909590a5b85a25e52660dba06307595aa8 /include | |
| parent | 2bfd3f8488136628f821f531e9b8be7a0d2f0a92 (diff) | |
gpu: ion: add CMA heap
New heap type ION_HEAP_TYPE_DMA where allocation is done with dma_alloc_coherent API.
device coherent_dma_mask must be set to DMA_BIT_MASK(32).
ion_platform_heap private field is used to retrieve the device linked to CMA,
if NULL the default CMA area is used.
ion_cma_get_sgtable is a copy of dma_common_get_sgtable function which should
be in kernel 3.5
Change-Id: If4b1a3f9c8a6bd72053226208832f4971e44372f
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ion.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/ion.h b/include/linux/ion.h index 2ce49d05fa63..440f4b3b0a4a 100644 --- a/include/linux/ion.h +++ b/include/linux/ion.h @@ -27,6 +27,7 @@ struct ion_handle; * @ION_HEAP_TYPE_CARVEOUT: memory allocated from a prereserved * carveout heap, allocations are physically * contiguous + * @ION_HEAP_TYPE_DMA: memory allocated via DMA API * @ION_NUM_HEAPS: helper for iterating over heaps, a bit mask * is used to identify the heaps, so only 32 * total heap types are supported @@ -36,6 +37,7 @@ enum ion_heap_type { ION_HEAP_TYPE_SYSTEM_CONTIG, ION_HEAP_TYPE_CARVEOUT, ION_HEAP_TYPE_CHUNK, + ION_HEAP_TYPE_DMA, ION_HEAP_TYPE_CUSTOM, /* must be last so device specific heaps always are at the end of this enum */ ION_NUM_HEAPS = 16, @@ -44,6 +46,7 @@ enum ion_heap_type { #define ION_HEAP_SYSTEM_MASK (1 << ION_HEAP_TYPE_SYSTEM) #define ION_HEAP_SYSTEM_CONTIG_MASK (1 << ION_HEAP_TYPE_SYSTEM_CONTIG) #define ION_HEAP_CARVEOUT_MASK (1 << ION_HEAP_TYPE_CARVEOUT) +#define ION_HEAP_TYPE_DMA_MASK (1 << ION_HEAP_TYPE_DMA) #define ION_NUM_HEAP_IDS sizeof(unsigned int) * 8 |