From: Grant Grundler <grundler@cup.hp.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: parisc-linux@thepuffingroup.com
Subject: Re: [parisc-linux] SuckyIO support
Date: Wed, 20 Dec 2000 13:12:19 -0800 [thread overview]
Message-ID: <200012202112.NAA17564@milano.cup.hp.com> (raw)
In-Reply-To: Your message of "Wed, 20 Dec 2000 20:47:45 PST." <E148q9M-0001y8-00@the-village.bc.nu>
Alan Cox wrote:
> > In our case, it's the IRQ region plus IRQ offset right now.
> > I've proposed another IRQ scheme which would replace the math with
> > a lookup table. But we haven't done anything with it yet since
> > the region+offset is "good enough" for now.
>
> Providing dev->irq is a suitable size putting a pointer into
only for 32-bit ILP. 64-bit LP (hppa) can't do that.
"int" is only 32-bits for both. Good idea though.
HP-UX has used "intr_obj" (iirc, void *) since 10.x and probably before.
The idea of a lookup table (I mentioned it above) would be obsoleted by
dev->irq defined as void *.
Maybe 2.5 kernel could use void * for dev->irq?
grant
Grant Grundler
Unix Systems Enablement Lab
+1.408.447.7253
next prev parent reply other threads:[~2000-12-20 21:08 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-12-19 9:42 [parisc-linux] SuckyIO support Matthew Wilcox
2000-12-19 15:46 ` Alex deVries
2000-12-20 2:56 ` Grant Grundler
2000-12-20 6:37 ` Alex deVries
2000-12-20 13:05 ` Alan Cox
2000-12-20 17:30 ` Grant Grundler
2000-12-20 20:47 ` Alan Cox
2000-12-20 21:12 ` Grant Grundler [this message]
2000-12-20 15:50 ` Matthew Wilcox
2000-12-20 16:54 ` Alex deVries
2000-12-20 18:24 ` Grant Grundler
2000-12-24 9:05 ` Matthew Wilcox
2000-12-26 7:16 ` Grant Grundler
2000-12-26 10:53 ` Matthew Wilcox
2000-12-26 20:18 ` Grant Grundler
2000-12-23 9:15 ` Matthew Wilcox
2000-12-27 20:27 ` Alex deVries
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