Re: kernel/3729: DMA on soekris net4801 (NS SCx200 IDE) freeze kernel.

[Alexandre Belloni <abelloni_(_at_)_nerim_(_dot_)_net>]

The following reply was made to PR kernel/3729; it has been noted by GNATS.

From: Alexandre Belloni <abelloni_(_at_)_nerim_(_dot_)_net>
To: Alexander Yurchenko <grange_(_at_)_rt_(_dot_)_mipt_(_dot_)_ru>
Cc: gnats_(_at_)_openbsd_(_dot_)_org
Subject: Re: kernel/3729: DMA on soekris net4801 (NS SCx200 IDE) freeze kernel.
Date: Sat, 27 Mar 2004 13:12:34 +0100

 On Sat, Mar 27, 2004 at 08:57:50AM +0300, Alexander Yurchenko wrote :
 > What is ``boot with DMA activated in kernel''? Kernel always choose the
 > best mode automatically. You're trying to force kernel to use DMA
 > with CF card? It won't work.
 > 
 
 I don't boot with a CF, there is only a harddrive in my soekris. If I let
 the kernel choose DMA (default behavior), it seems it freeze before
 downgrading successfully to PIO. This didn't happen with OpenBSD 3.3 because
 the kernel wasn't trying to use DMA. It seems that the driver has been
 modified and now it is trying to use DMA but freezes trying to downgrade
 though chipset is UltraDMA 33 capable.
 
 
 -- 
 Alexandre Belloni
 AE-UTBM: http://ae.utbm.fr -         - Lolut: http://lolut.utbm.info
 Key fingerprint = A7C6 7CD4 4328 59D1 79FD  B8BB 945F 4DD5 B634 89BD