On Mon, Nov 19, 2012 at 09:19:15AM -0700, Mark A. Greer wrote:
> On Mon, Nov 19, 2012 at 11:01:44AM +0100, Peter Ujfalusi wrote:
> > Hi,
> >
> > On 10/19/2012 12:20 AM, Mark A. Greer wrote:
> > > Enable DMA prefetching by setting the 'OMAP_DMA_DST_SYNC_PREFETCH'
> > > flag whenever there is a dest
On Mon, Nov 19, 2012 at 11:01:44AM +0100, Peter Ujfalusi wrote:
> Hi,
>
> On 10/19/2012 12:20 AM, Mark A. Greer wrote:
> > Enable DMA prefetching by setting the 'OMAP_DMA_DST_SYNC_PREFETCH'
> > flag whenever there is a destination synchronized DMA transfer.
> > Prefetching is not allowed on source
On Mon, Nov 19, 2012 at 11:00:15AM +0100, Peter Ujfalusi wrote:
> When we have prefetch enabled we tend to resume after pause from a slightly
> off place than when the prefetch is disabled.
That is exactly what I was expecting would happen having read how the
DMA works.
With memory->device transf
Hi,
On 10/19/2012 12:20 AM, Mark A. Greer wrote:
> Enable DMA prefetching by setting the 'OMAP_DMA_DST_SYNC_PREFETCH'
> flag whenever there is a destination synchronized DMA transfer.
> Prefetching is not allowed on source synchronized DMA transfers.
>
> Enabling prefetch significantly improves D
On 11/17/2012 12:31 PM, Russell King - ARM Linux wrote:
> On Fri, Oct 19, 2012 at 02:45:55PM +0200, Péter Ujfalusi wrote:
>> Hi,
>>
>> On 10/19/2012 01:33 AM, Russell King - ARM Linux wrote:
>>> I'm merely pointing out here that we need their feedback here before
>>> deciding if there's anything fu
On Fri, Oct 19, 2012 at 02:45:55PM +0200, Péter Ujfalusi wrote:
> Hi,
>
> On 10/19/2012 01:33 AM, Russell King - ARM Linux wrote:
> > I'm merely pointing out here that we need their feedback here before
> > deciding if there's anything further that needs to happen.
>
> Thanks Russell, I'll take a
On Fri, Oct 19, 2012 at 02:45:55PM +0200, Péter Ujfalusi wrote:
> Hi,
>
> On 10/19/2012 01:33 AM, Russell King - ARM Linux wrote:
> > I would suggest getting some feedback from the ASoC people first, before
> > trying to invent new APIs to work around this stuff. If they can live
> > with having
On Fri, Oct 19, 2012 at 02:45:55PM +0200, Péter Ujfalusi wrote:
> Hi,
>
> On 10/19/2012 01:33 AM, Russell King - ARM Linux wrote:
> > I would suggest getting some feedback from the ASoC people first, before
> > trying to invent new APIs to work around this stuff. If they can live
> > with having
Hi,
On 10/19/2012 01:33 AM, Russell King - ARM Linux wrote:
> I would suggest getting some feedback from the ASoC people first, before
> trying to invent new APIs to work around this stuff. If they can live
> with having prefetch enabled on OMAP then there isn't an issue here. If
> not, we need
On Fri, Oct 19, 2012 at 12:33:35AM +0100, Russell King - ARM Linux wrote:
> On Thu, Oct 18, 2012 at 04:24:05PM -0700, Mark A. Greer wrote:
> > On Thu, Oct 18, 2012 at 11:55:40PM +0100, Russell King - ARM Linux wrote:
> > > On Thu, Oct 18, 2012 at 03:20:46PM -0700, Mark A. Greer wrote:
> > > > This
On Thu, Oct 18, 2012 at 04:24:05PM -0700, Mark A. Greer wrote:
> On Thu, Oct 18, 2012 at 11:55:40PM +0100, Russell King - ARM Linux wrote:
> > On Thu, Oct 18, 2012 at 03:20:46PM -0700, Mark A. Greer wrote:
> > > This patch seems fairly stable but I've only tested omap-sham (crypto)
> > > and omap_h
On Thu, Oct 18, 2012 at 11:55:40PM +0100, Russell King - ARM Linux wrote:
> On Thu, Oct 18, 2012 at 03:20:46PM -0700, Mark A. Greer wrote:
> > This patch seems fairly stable but I've only tested omap-sham (crypto)
> > and omap_hsmmc (mmc) on an am37x EVM. I also enabled burst mode but
> > that mad
On Thu, Oct 18, 2012 at 03:20:46PM -0700, Mark A. Greer wrote:
> This patch seems fairly stable but I've only tested omap-sham (crypto)
> and omap_hsmmc (mmc) on an am37x EVM. I also enabled burst mode but
> that made the system unstable when exercising either omap-sham or
> omap_hsmmc. I'm unawa
On Thu, Oct 18, 2012 at 03:20:46PM -0700, Mark A. Greer wrote:
> This patch seems fairly stable but I've only tested omap-sham (crypto)
> and omap_hsmmc (mmc) on an am37x EVM. I also enabled burst mode but
> that made the system unstable when exercising either omap-sham or
> omap_hsmmc. I'm unaw
Enable DMA prefetching by setting the 'OMAP_DMA_DST_SYNC_PREFETCH'
flag whenever there is a destination synchronized DMA transfer.
Prefetching is not allowed on source synchronized DMA transfers.
Enabling prefetch significantly improves DMA performance.
For example, running 'modprobe tcrypt sec=2
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