From: Marcin Dalecki <dalecki@evision.ag>
To: Vojtech Pavlik <vojtech@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
William Lee Irwin III <wli@holomorphy.com>,
linux-kernel@vger.kernel.org
Subject: Re: [RFC/CFT] cmd640 irqlocking fixes
Date: Thu, 25 Jul 2002 10:28:56 +0200 [thread overview]
Message-ID: <3D3FB6C8.1070409@evision.ag> (raw)
In-Reply-To: 20020725095448.B21541@ucw.cz
Vojtech Pavlik wrote:
>
> The kernel functions are OK. The problem is that the kernel can use
> PCIBIOS calls to set the registers. And certain old buggy BIOSes which
> violate the PCI spec can use wrong size data transfers to set the
> registers, which the CMD640 doesn't like.
>
> IMHO the best workaround here would be either to disable PCIBIOS calls
> and revert to conf1 or conf2 in the PCI code if a CMD640 is present, or
> just panic() in the CMD640 code and suggest to the user to use
> "pci=nobios" on the kernel command line. I'd actually prefer the later.
>
From a long long time ago during the first days of this driver I
remember that those chips could be wired to both PCI and VLB(ISA) bus.
And this is the main reaons why the functions is question exist in first
place -> "emulating" PCI configuration space access on VLB.
next prev parent reply other threads:[~2002-07-25 8:30 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-24 22:58 [RFC/CFT] cmd640 irqlocking fixes William Lee Irwin III
2002-07-24 23:16 ` William Lee Irwin III
2002-07-25 1:05 ` Alan Cox
2002-07-25 7:54 ` Vojtech Pavlik
2002-07-25 8:28 ` Marcin Dalecki [this message]
2002-07-25 8:55 ` Vojtech Pavlik
2002-07-25 8:56 ` Marcin Dalecki
2002-07-25 10:24 ` Alan Cox
2002-07-25 10:37 ` Marcin Dalecki
2002-07-25 10:51 ` Andre Hedrick
2002-07-25 12:52 ` Alan Cox
2002-07-25 12:05 ` Andre Hedrick
2002-07-25 13:08 ` Alan Cox
2002-07-25 11:53 ` Marcin Dalecki
2002-07-25 12:30 ` Andre Hedrick
2002-07-25 14:33 ` Alan Cox
2002-07-25 13:39 ` Benjamin Herrenschmidt
2002-07-25 14:18 ` PCI config locking (WAS Re: [RFC/CFT] cmd640 irqlocking fixes)2 Benjamin Herrenschmidt
2002-07-25 15:45 ` Alan Cox
2002-07-25 14:40 ` benh
2002-07-25 16:10 ` Alan Cox
2002-07-25 23:04 ` Alan Cox
2002-07-25 14:48 ` Dave Jones
2002-07-25 15:44 ` Thunder from the hill
2002-07-29 7:13 ` David S. Miller
2002-07-26 0:41 ` Marcin Dalecki
2002-07-26 0:15 ` [RFC/CFT] cmd640 irqlocking fixes Albert D. Cahalan
2002-07-25 10:22 ` Alan Cox
2002-07-25 8:01 ` Marcin Dalecki
-- strict thread matches above, loose matches on Subject: below --
2002-07-25 12:50 Petr Vandrovec
2002-07-25 14:34 ` Alan Cox
2002-07-26 2:15 ` Marcin Dalecki
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