From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: How to debug ? Date: Wed, 02 Apr 2003 12:40:18 +0200 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: References: Mime-Version: 1.0 (generated by SEMI 1.14.4 - "Hosorogi") Content-Type: text/plain; charset=US-ASCII Return-path: In-Reply-To: Errors-To: alsa-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: Giuliano Pochini Cc: alsa-devel List-Id: alsa-devel@alsa-project.org At Wed, 02 Apr 2003 12:33:18 +0200 (CEST), Giuliano Pochini wrote: > > > On 02-Apr-2003 Takashi Iwai wrote: > >> I don't set .copy callback and ->dma_area should be 0 because the card > >> uses a sg-list. #:( > > > > no, dma_area should not be zero. you shouldn't change the value, if > > you use snd_pcm_lib_malloc_pages(). in the case of sg-buffer, > > dma_area will hold the virtual mapped address, too. > > I write in the runtime struct only the private area and hw pointers. sorry, which fields do you mean exactly? runtime->private_data and runtime->hw ? then they are ok, of course. anyway, runtime->dma_area and runtime->dma_bytes MUST be filled manually IFF you don't use snd_pcm_lib_malloc_pages(). (dma_area won't be needed if the mmap is not supported and copy callback is defined, though.) Takashi ------------------------------------------------------- This SF.net email is sponsored by: ValueWeb: Dedicated Hosting for just $79/mo with 500 GB of bandwidth! No other company gives more support or power for your dedicated server http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/direct/01/