On 6/27/07, Clemens Ladisch <cladisch@xxxxxxxxxxxx> wrote: > Pharaoh . wrote: > > I have allocated the DMA buffer using snd_pcm_lib_malloc_pages() and > > it was preallocated as: > > > > snd_pcm_lib_preallocate_pages_for_all(pcm, > > SNDRV_DMA_TYPE_CONTINUOUS, > > snd_dma_continuous_data > > (GFP_KERNEL), > > SNDRV_DMA_TYPE_CONTINUOUS is for a buffer that cannot be accessed > over DMA. > > What kind of bus does your hardware use, and how would you > allocate memory for it? > > > Regards, > Clemens > Continuous buffers unrelated to the bus type can be allocated using SNDRV_DMA_TYPE_CONTINUOUS right? I am referring a standard driver from omap source tree, and the buffer allocation functions I have copied from there and they should be same for the range of OMAPs since the dma handling is same for them. > SNDRV_DMA_TYPE_CONTINUOUS is for a buffer that cannot be accessed > over DMA. Thats why I get runtime->dma_addr as 0. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
