From: "H. Peter Anvin" <hpa@zytor.com>
To: linux-kernel@vger.kernel.org
Subject: Re: PCI code: why need outb (0x01, 0xCFB); ?
Date: 8 Jan 2003 10:52:30 -0800 [thread overview]
Message-ID: <avhs1e$qmf$1@cesium.transmeta.com> (raw)
In-Reply-To: F87sTOHYNhMwqvbLaKL0001615a@hotmail.com
Followup to: <F87sTOHYNhMwqvbLaKL0001615a@hotmail.com>
By author: "fretre lewis" <fretre3618@hotmail.com>
In newsgroup: linux.dev.kernel
> 1. which device is at port address 0xCFB?
Hopefully none.
> 2. what is meaning of the writing operation "outb (0x01, 0xCFB);" for THIS
> device?, it'seem that PCI spec v2.0 not say anything about it?
It's trying to verify that the PCI northbridge does *NOT* respond to
this (byte-wide) reference.
-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt <amsp@zytor.com>
next prev parent reply other threads:[~2003-01-08 18:44 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-06 9:26 PCI code: why need outb (0x01, 0xCFB); ? fretre lewis
2003-01-06 12:41 ` Gianni Tedesco
2003-01-08 18:52 ` H. Peter Anvin [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-01-06 13:02 fretre lewis
2003-01-07 2:24 fretre lewis
2003-01-08 19:10 Nakajima, Jun
2003-01-08 20:40 ` H. Peter Anvin
2003-01-08 21:37 ` Richard B. Johnson
2003-01-08 20:49 Petr Vandrovec
2003-01-08 21:22 ` Maciej W. Rozycki
2003-01-08 21:33 Petr Vandrovec
2003-01-08 21:53 ` Maciej W. Rozycki
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