On Thu, Jun 11, 2015 at 4:26 PM, Catalin Marinas
wrote:
> On Wed, Jun 10, 2015 at 09:34:43PM +0200, Lorenzo Nava wrote:
>> On Wed, Jun 10, 2015 at 6:28 PM, Catalin Marinas
>> wrote:
>> > On Wed, Jun 03, 2015 at 07:15:45PM +0200, Lorenzo Nava wrote:
>> > > This
On Thu, Jun 11, 2015 at 4:26 PM, Catalin Marinas
wrote:
> On Wed, Jun 10, 2015 at 09:34:43PM +0200, Lorenzo Nava wrote:
>> On Wed, Jun 10, 2015 at 6:28 PM, Catalin Marinas
>> wrote:
>> > On Wed, Jun 03, 2015 at 07:15:45PM +0200, Lorenzo Nava wrote:
>> > > This
This patch allows the use of CMA for DMA coherent memory allocation.
At the moment if the input parameter "is_coherent" is set to true
the allocation is not made using the CMA, which I think is not the
desired behaviour.
Signed-off-by: Lorenzo Nava
---
Changes in v2:
correct __ar
ping!
On Wed, Jun 3, 2015 at 7:15 PM, Lorenzo Nava wrote:
> This patch allows the use of CMA for DMA coherent memory allocation.
> At the moment if the input parameter "is_coherent" is set to true
> the allocation is not made using the CMA, which I think is not the
On Wed, Jun 10, 2015 at 6:28 PM, Catalin Marinas
wrote:
>
> On Wed, Jun 03, 2015 at 07:15:45PM +0200, Lorenzo Nava wrote:
> > This patch allows the use of CMA for DMA coherent memory allocation.
> > At the moment if the input parameter "is_coherent" is set to true
&g
This patch allows the use of CMA for DMA coherent memory allocation.
At the moment if the input parameter "is_coherent" is set to true
the allocation is not made using the CMA, which I think is not the
desired behaviour.
Signed-off-by: Lorenzo Nava
---
Changes in v2:
correct __ar
On Fri, Jul 3, 2015 at 11:03 AM, Russell King - ARM Linux
wrote:
> On Wed, Jul 01, 2015 at 12:12:51PM +0100, Catalin Marinas wrote:
>> On Tue, Jun 30, 2015 at 11:29:06PM +0200, Lorenzo Nava wrote:
>> > This patch allows the use of CMA for DMA coherent memory allocation.
>>
On Wed, May 20, 2015 at 12:34 AM, Russell King - ARM Linux
wrote:
> On Wed, May 20, 2015 at 12:14:48AM +0200, Arnd Bergmann wrote:
>> With that memory, you should be able to use the normal streaming
>> API (dma_sync_single_for_*).
>
> Wrong, as I've pointed out previously. The only memory which y
On Wed, May 20, 2015 at 6:20 PM, Russell King - ARM Linux
wrote:
> On Wed, May 20, 2015 at 02:57:36PM +0200, Lorenzo Nava wrote:
>> so probably currently is impossible to allocate a contiguous cachable
>> DMA memory. You can't use CMA, and the only functions which allow you
This patch is to allow the use of CMA for DMA coherent memory allocation.
At the moment if "is_coherent" is set to true the allocation can't use the CMA,
which I think is not the desired behaviour.
---
arch/arm/mm/dma-mapping.c |4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff
This patch allows the use of CMA for DMA coherent memory allocation.
At the moment if "is_coherent" is set to true the allocation can't use the CMA,
which I think is not the desired behaviour.
Changes in v2:
correct __arm_dma_free() according to __dma_alloc() allocation
---
arch/arm/mm/dma-map
Hello everybody,
it's been a while since I've started working with DMA on ARM processor
for a smart camera project. Typically the requirements is to have a
large memory area which can be accessed by both DMA and user. I've
already noticed that many people wonder about which would be the best
way t
Hello,
it's been a while since I've started working with DMA on ARM processor
for a smart camera project. Typically the requirements is to have a
large memory area which can be accessed by both DMA and user. I've
already noticed that many people wonder about which would be the best
way to have dat
is case?
Maybe my interpretation of dma_alloc_coherent() is not correct, and
the coherency can be managed using the dma_sync_single_for_* functions
and it doesn't require hardware mechanism.
Thank you.
Cheers
On Tue, May 19, 2015 at 6:34 PM, Catalin Marinas
wrote:
> On Mon, May 18, 2015 at 10
On Tue, May 19, 2015 at 6:34 PM, Catalin Marinas
wrote:
> On Mon, May 18, 2015 at 10:56:06PM +0200, Lorenzo Nava wrote:
>> it's been a while since I've started working with DMA on ARM processor
>> for a smart camera project. Typically the requirements is to have a
>&
On Wed, May 20, 2015 at 12:14 AM, Arnd Bergmann wrote:
> On Wednesday 20 May 2015 00:05:54 Lorenzo Nava wrote:
>>
>> On Tue, May 19, 2015 at 6:34 PM, Catalin Marinas
>> wrote:
>> > On Mon, May 18, 2015 at 10:56:06PM +0200, Lorenzo Nava wrote:
>> >> it
On Tue, Jun 30, 2015 at 1:05 PM, Catalin Marinas
wrote:
>
> On Mon, Jun 29, 2015 at 07:10:45PM +0200, Lorenzo Nava wrote:
> > This patch allows the use of CMA for DMA coherent memory allocation.
> > At the moment if the input parameter "is_coherent" is set to true
&g
This patch allows the use of CMA for DMA coherent memory allocation.
At the moment if the input parameter "is_coherent" is set to true
the allocation is not made using the CMA, which I think is not the
desired behaviour.
Signed-off-by: Lorenzo Nava
Reviewed-by: Catalin Marinas
---
Cha
This patch allows the use of CMA for DMA coherent memory allocation.
At the moment if the input parameter "is_coherent" is set to true
the allocation is not made using the CMA, which I think is not the
desired behaviour.
Signed-off-by: Lorenzo Nava
Reviewed-by: Catalin Marinas
---
Cha
On Fri, Jun 26, 2015 at 6:25 PM, Catalin Marinas
wrote:
> On Thu, Jun 18, 2015 at 11:44:22PM +0200, Lorenzo Nava wrote:
>> diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
>> index 7e7583d..8e7f402 100644
>> --- a/arch/arm/mm/dma-mapping.c
>> +++
This patch allows the use of CMA for DMA coherent memory allocation.
At the moment if the input parameter "is_coherent" is set to true
the allocation is not made using the CMA, which I think is not the
desired behaviour.
Signed-off-by: Lorenzo Nava
---
Changes in v2:
correct __ar
On Fri, Jul 3, 2015 at 11:03 AM, Russell King - ARM Linux
wrote:
> On Wed, Jul 01, 2015 at 12:12:51PM +0100, Catalin Marinas wrote:
>> On Tue, Jun 30, 2015 at 11:29:06PM +0200, Lorenzo Nava wrote:
>> > This patch allows the use of CMA for DMA coherent memory allocation.
>>
On Fri, Jul 3, 2015 at 11:03 AM, Russell King - ARM Linux
wrote:
> On Wed, Jul 01, 2015 at 12:12:51PM +0100, Catalin Marinas wrote:
>> On Tue, Jun 30, 2015 at 11:29:06PM +0200, Lorenzo Nava wrote:
>> > This patch allows the use of CMA for DMA coherent memory allocation.
>>
On Fri, Jul 3, 2015 at 11:03 AM, Russell King - ARM Linux
wrote:
> On Wed, Jul 01, 2015 at 12:12:51PM +0100, Catalin Marinas wrote:
>> On Tue, Jun 30, 2015 at 11:29:06PM +0200, Lorenzo Nava wrote:
>> > This patch allows the use of CMA for DMA coherent memory allocation.
>>
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