Hi, -------- Original-Nachricht -------- > Datum: Wed, 18 Jun 2008 12:38:31 +0200 > Von: Takashi Iwai <[EMAIL PROTECTED]> > An: [EMAIL PROTECTED] > CC: linuxppc-dev@ozlabs.org, [EMAIL PROTECTED] > Betreff: [PATCH 0/3] ALSA fixes for non-coherent ppc32
> Hi, > > I've tried to renew the fixes of ALSA issues about non-coherent DMA > memories. The last patch worked for SG-buffers somehow but would > result in a problem if many pages are allocated because of > dma_alloc_coherent() handling. Now, I chose a more simpler > workaround: the SG-buffers are handled as simple continuous buffers. > > This time I split the patches to several parts. The first patch > contains a very lazy dma_mmap_coherent() implementation for ppc32. > The next patch adds the call of dma_mmap_coherent() for the default > mmap of ALSA PCM. And the last one is to add the conversion of > SG-buffer handling as above. > > The patches are created against the latest ALSA tree, and the last > patch won't be applicable fully to 2.6.26-rc6. But, it's only for > snd-hda-intel and there is no PPC32 hardware supporting this, AFAIK. > So just ignore the reject. > > The patches are found also on my git tree, dma-fix branch of > git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git > > Any comments and test reports are appreciated, especially about > dma_mmap_coherent() addition. I know this answer comes a little bit late, but my PPC machine was not working for two weeks due to a hardware failure. I tested the patch on 2.6.26-rc9 and it seems to work fine so far with my emu10k soundcard. I just had to add "#include <linux/dma-mapping.h>" to pcm_native.c. Otherwise it wouldn't compile. Thanks! regards, Gerhard -- Psssst! Schon das coole Video vom GMX MultiMessenger gesehen? Der Eine für Alle: http://www.gmx.net/de/go/messenger03 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
