[2857] in linux-scsi channel archive
Re: unchecked_isa_dma, *_EXTRA_DEVS
daemon@ATHENA.MIT.EDU (Gabriel Paubert)
Mon Nov 24 05:10:29 1997
Date: Mon, 24 Nov 1997 11:14:42 +0100 (MET)
From: Gabriel Paubert <paubert@iram.es>
To: Eric Youngdale <eric@andante.jic.com>
cc: Jakub Jelinek <jj@sunsite.ms.mff.cuni.cz>, linux-scsi@vger.rutgers.edu
In-Reply-To: <Pine.LNX.3.95.971123222144.7293L-100000@andante.jic.com>
On Sun, 23 Nov 1997, Eric Youngdale wrote:
> Actually, I believe it isn't only Intel - other processors have
> non-32 bit memory busses.
It may depend on your PCI to ISA bridge. For example on PPC the ISA DMA
engine implemented in Winbond W83C553 bridge can do DMA with 32 bit
addresses on the PCI side (it has additional registers for this). I
believe the code to handle these registers is not yet written though.
Gabriel.
