Date: Tue, 6 Feb 1996 20:55:14 -0800 (PST) From: Julian Elischer <julian@ref.tfs.com> To: msmith@atrad.adelaide.edu.au (Michael Smith) Cc: root@deadline.snafu.de, current@FreeBSD.org Subject: Re: Tired of "isa_dmadone_nobounce" messages Message-ID: <199602070455.UAA00454@ref.tfs.com> In-Reply-To: <199602070252.NAA07049@genesis.atrad.adelaide.edu.au> from "Michael Smith" at Feb 7, 96 01:22:38 pm
next in thread | previous in thread | raw e-mail | index | archive | help
> > Andreas S. Wetzel stands accused of saying: > > > > I just had a look at isa/sound/sb_dsp.c as well as isa/sound/dmabuf.c and it > > seems as if they were actually using isa_dmastart(): > > */ > > #if defined(__FreeBSD__) > > > > isa_dmastart (B_RAW | ((dma_mode == DMA_MODE_READ) ? B_READ : B_WRITE), > > (caddr_t)dmap->raw_buf_phys[0], > > dmap->bytes_in_use, > > chan); > > #else /* else __FreeBSD__ */ > > Looks OK. I would be guessing then that DMAbuf_reset_dma is being called > without a matching DMA operation. I think the problem is more likely that it isn't FINISHING it up correctly. rather than not starting it.. there are from my vague memory 3 parts setup DMA release I think that if you do a setup and release wasn't ever called, it works but complains.. mind you I haven't really looked at it since 386bsd so don't trust what I say.... > > > (@@) Andreas S. Wetzel E-mail: mickey@deadline.snafu.de > > -- > ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ > ]] Genesis Software genesis@atrad.adelaide.edu.au [[ > ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ > ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ > ]] "wherever you go, there you are" - Buckaroo Banzai [[ >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199602070455.UAA00454>