From: Adrian Cox <adrian@humboldt.co.uk>
To: linuxppc-dev@lists.linuxppc.org
Subject: Re: ISA DMA take 2
Date: Wed, 09 Jan 2002 17:40:33 +0000 [thread overview]
Message-ID: <3C3C8091.8070300@humboldt.co.uk> (raw)
In-Reply-To: 0201091721.AA22295@ivan.Harhan.ORG
Michael Sokolov wrote:
> What's your memory map? Do you put the bottom 16 MB of main memory in the
> bottom 16 MB of the PCI memory space on the PCI segment with the Via without an
> I/O hole?
Yes - and I set ISA_DMA_THRESHOLD to 0x00ffffff. It's not possible to
use ISA DMA with the Via southbridge unless you have main memory at 0x0
on the PCI bus.
Of course, if anybody knows a cheap southbridge with 32-bit ISA DMA,
UDMA100, and maybe USB, it would be nice to hear of it for future boards.
--
Adrian Cox http://www.humboldt.co.uk/
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2002-01-09 17:40 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-09 17:21 ISA DMA take 2 Michael Sokolov
2002-01-09 17:40 ` Adrian Cox [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-01-09 20:18 Michael Sokolov
2002-01-09 20:43 ` Adrian Cox
2002-01-09 17:53 Michael Sokolov
2002-01-09 18:27 ` Adrian Cox
2002-01-08 15:33 Adrian Cox
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