From: Benjamin Herrenschmidt <bh40@calva.net>
To: Gabriel Paubert <paubert@iram.es>,
linuxppc-dev@lists.linuxppc.org, linux-fbdev@vuser.vu.union.edu
Subject: Re: [linux-fbdev] Retrace
Date: Tue, 8 Feb 2000 22:29:16 +0100 [thread overview]
Message-ID: <20000208222916.011600@mailhost.mipsys.com> (raw)
On Tue, Feb 8, 2000, Gabriel Paubert <paubert@iram.es> wrote:
> deviobase = ioport_ptr(dev->resource[0]);
>
> data = inl(deviobase+register_offset);
>
>and for an MMIO mapped area:
>
> mmioptr = ioremap(ioremap_ptr(dev->resource[1]));
>
> data = readl(mmioptr+register_offset);
Is it possible to "walk up" the resource tree from dev->resource[0] ? I
mean, the ioport_ptr function, to work on those weird Apple bridges, need
to go thru a special routine that looks up the device in OF device tree
to find out on which sub-bridge it is.
In order to do that, it needs the pci dev_fn. Can this be retreived from
dev->resource[0] ?
Also, this doesn't solve the userland problem.
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next reply other threads:[~2000-02-08 21:29 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-02-08 21:29 Benjamin Herrenschmidt [this message]
2000-02-09 9:57 ` [linux-fbdev] Retrace Gabriel Paubert
-- strict thread matches above, loose matches on Subject: below --
2000-02-09 13:45 Patrick Lerda
2000-02-09 14:09 ` Gabriel Paubert
2000-02-08 16:00 Andy
2000-02-08 10:02 Geert Uytterhoeven
2000-02-09 2:45 ` Paul Mackerras
[not found] <Pine.LNX.4.10.10002071812050.1142-100000@cassiopeia.home>
2000-02-07 19:02 ` Benjamin Herrenschmidt
2000-02-08 9:29 ` Gabriel Paubert
2000-02-08 14:56 ` Benjamin Herrenschmidt
2000-02-08 16:47 ` Gabriel Paubert
2000-02-08 16:51 ` Geert Uytterhoeven
2000-02-08 17:09 ` Gabriel Paubert
2000-02-08 21:30 ` Benjamin Herrenschmidt
2000-02-08 21:39 ` Geert Uytterhoeven
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