From: Benjamin Herrenschmidt <bh40@calva.net>
To: linuxppc-dev@lists.linuxppc.org
Subject: USB, PCI and registers
Date: Mon, 7 Dec 1998 13:31:45 +0100 [thread overview]
Message-ID: <19981207133145.029787@mail.mipsys.com> (raw)
On Sat, Jul 29, 1939, <> wrote:
>I'm a bit confused as to why pci.c would have base_address[6] as a
>member to start with - and just as confused as to why there would
>be a difference between architectures.
>
>Anyone have any comments that might help clarify this confusion?
Those base addresses correspond to the base-addresses registers of the
board's configuration space. If a given PCI chip uses the 5th register,
then the driver must look for base_addresses[4], that's logical. They are
not assigned in any special order: which register to use depends on the
hw implementation and can make HW that uses the 2nd and 3rd registers and
not the fist, for example.
--
E-Mail: <mailto:bh40@calva.net>
BenH. Web : <http://calvaweb.calvacom.fr/bh40/>
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next reply other threads:[~1998-12-07 12:31 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-12-07 12:31 Benjamin Herrenschmidt [this message]
1998-12-07 21:02 ` PReP RTC vs Decrementer accuracy Troy Benjegerdes
1998-12-08 5:00 ` Cort Dougan
1998-12-08 20:32 ` Dan Malek
1998-12-08 23:52 ` Cort Dougan
1998-12-09 7:30 ` Troy Benjegerdes
1998-12-09 8:25 ` Cort Dougan
1998-12-09 23:52 ` Corey Minyard
1998-12-10 4:20 ` Corey Minyard
1998-12-10 5:48 ` Cort Dougan
1998-12-10 10:58 ` Geert Uytterhoeven
1998-12-10 16:00 ` Corey Minyard
1998-12-09 20:37 ` Dan Malek
1998-12-10 5:57 ` Guy G. Sotomayor, Jr.
1998-12-10 17:53 ` Dan Malek
1998-12-10 19:26 ` Guy G. Sotomayor, Jr.
1998-12-11 5:53 ` Dan Malek
1998-12-13 17:05 ` Gabriel Paubert
1998-12-14 6:45 ` Dan Malek
1998-12-15 20:12 ` Dan Malek
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