On Tue, Nov 13, 2012 at 11:47:57PM -0800, Kasatkin, Dmitry wrote: > On Fri, Nov 9, 2012 at 9:17 AM, Mark A. Greer <mgreer@xxxxxxxxxxxxxxx> wrote: > > On Fri, Nov 09, 2012 at 06:28:16PM +0200, Kasatkin, Dmitry wrote: > >> On Wed, Nov 7, 2012 at 4:57 AM, Mark A. Greer <mgreer@xxxxxxxxxxxxxxx> wrote: > >> > From: "Mark A. Greer" <mgreer@xxxxxxxxxxxxxxx> > >> > > >> > Remove usage of the private OMAP DMA API. > >> > The dmaengine API will be used instead. > >> > > >> > CC: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx> > >> > CC: Dmitry Kasatkin <dmitry.kasatkin@xxxxxxxxx> > >> > Signed-off-by: Mark A. Greer <mgreer@xxxxxxxxxxxxxxx> > >> > --- > >> > drivers/crypto/omap-sham.c | 117 --------------------------------------------- > >> > 1 file changed, 117 deletions(-) > >> > > >> > diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c > >> > index b57277c..ebb5255 100644 > >> > --- a/drivers/crypto/omap-sham.c > >> > +++ b/drivers/crypto/omap-sham.c > > > >> > @@ -807,18 +762,6 @@ static int omap_sham_handle_queue(struct omap_sham_dev *dd, > >> > if (err) > >> > goto err1; > >> > > >> > -#ifdef OMAP_SHAM_DMA_PRIVATE > >> > - omap_set_dma_dest_params(dd->dma_lch, 0, > >> > - OMAP_DMA_AMODE_CONSTANT, > >> > - dd->phys_base + SHA_REG_DIN(0), 0, 16); > >> > - > >> > - omap_set_dma_dest_burst_mode(dd->dma_lch, > >> > - OMAP_DMA_DATA_BURST_16); > >> > - > >> > - omap_set_dma_src_burst_mode(dd->dma_lch, > >> > - OMAP_DMA_DATA_BURST_4); > >> > >> Burst mode significantly improves performance. > >> How do you configure burst mode with new API? > > > > This is (or should be) taken care of by the dmaengine infrastructure. > > I've noted that there's an issue and there is a discussion about it > > here: > > > > http://www.spinics.net/lists/linux-omap/msg79855.html > > > > We probably need to extend the dmaengine API to allow API-users to > > request specific tweaks/optimizations/whatever but that's MHO. > > > > Hello, > > I am in favor of new APIs. > The only my concern is that it performs worse.. > > Is it possible to keep burst mode setting there? I'm going to respin the patch the I posted in the email thread above to only set bursting for non-cyclic DMAs. Mark -- -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
