At Wed, 5 Mar 2003 12:09:21 -0400, mjander wrote: > > Hi, > > Another question... :) > > The Aureal Vortex has Scatter Gather DMA's for each audio channel. > But these SG DMA > support only max 4 pages. Each page can have a programable size of > upto 4 KB. > I was studying the ALSA SG scheme and it doesnt seme to fit into > the aureal vortex > SG buffer scheme, because ALSA, as far as i understood, only > allows pages of the kernel PAGE_SIZE size, and allocates as many > pages (without cound limit ?) until the buffer size is reached.
then you can define max_buffer_bytes as 4 * 4096. then sg-allocator will allocate up to 4 pages. > But the PAGE_SIZE around 0x400 or 0x800, which is rather small. sorry, what are these numbers? > On the Aureal vortex soundcard side i have 4 registers for page > base address, and some sort of config regs to configure each page > size and the next page for each page. I just dont understand how > could i plug this two apparently incompatible things together. Takashi ------------------------------------------------------- This SF.net email is sponsored by: Etnus, makers of TotalView, The debugger for complex code. Debugging C/C++ programs can leave you feeling lost and disoriented. TotalView can help you find your way. Available on major UNIX and Linux platforms. Try it free. www.etnus.com _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
