From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "Joseph P. Garcia" <jpgarcia@execpc.com>,
<linuxppc-dev@lists.linuxppc.org>
Subject: Re: 2.4.10-ben0 doesn't see ide1
Date: Sun, 30 Sep 2001 19:51:48 +0200 [thread overview]
Message-ID: <20010930175148.29787@smtp.wanadoo.fr> (raw)
In-Reply-To: <20010930122211.2cf9b2f7.jpgarcia@execpc.com>
>Rack this up as an OF bug on some systems I think. I got it too
>(Wallstreet2/300). The OF IDE nodes request what look like twice memory
>as much as they need. Linux doesn't even use most of it anyway.
>
>The two ide busses in my system have resources 0x10000 apart, while they
>both reserve a size of 0x20000 (IIRC). Since BenH's recent kernels
>reserve space based on OF, and then request it realistically, in this
>situation, it will fail on half of the resource allocation. Even though
>we don't use the overlapping area...
>
>Quick fix? halve all the resource sizes of the ide nodes. (DMA's space
>also does this). I don't know what the long term fix would be.
Ok, thanks for figuring out what was breaking request_OF_node on
those machines, I didn't yet had a chance to look at it in more
details ;)
A "good" fix would probably be to fixup OF ranges early during
boot, but for now, I think just limiting how much memory is
requested will be enough.
BTW. Once that's fixed, does media bay works on lombard & wallstreet
machines with my new kernel ? I rewrote the media bay driver but
didn't yet have a chance to test it on anything but Pismo.
Also, Joseph, did you notice similar problem with other OF resources
ranges or is this specific to IDE ?
Ben.
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2001-09-30 17:51 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-30 10:04 2.4.10-ben0 doesn't see ide1 Jan Nieuwenhuizen
2001-09-30 17:22 ` Joseph P. Garcia
2001-09-30 17:51 ` Benjamin Herrenschmidt [this message]
2001-09-30 18:13 ` Joseph P. Garcia
2001-09-30 19:12 ` Benjamin Herrenschmidt
2001-09-30 19:39 ` Joseph P. Garcia
2001-10-01 12:28 ` Benjamin Herrenschmidt
2001-10-01 8:08 ` Michael Schmitz
2001-10-01 18:00 ` Jan Nieuwenhuizen
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