From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: avorontsov@ru.mvista.com, Ingo Molnar <mingo@elte.hu>,
linux-ide@vger.kernel.org,
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Steven Rostedt <rostedt@goodmis.org>,
Daniel Walker <dwalker@mvista.com>
Subject: Re: [PATCH v2 -rt] ide: workaround buggy hardware issues with preemptable hardirqs
Date: Sun, 29 Jun 2008 17:17:38 +0400 [thread overview]
Message-ID: <48678B72.4000706@ru.mvista.com> (raw)
In-Reply-To: <20080629134943.19b94bd2@lxorguk.ukuu.org.uk>
Alan Cox wrote:
>> His boot log shows the native mode.
> Then the bridge is misprogrammed
>> What's IDEIRT, some ISA bridge register? And why should one set
>>[A]PIC to level mode for legacy mode IDE? :-O
> You need an NDA and then they'll send you the data sheet for the bridges
> and other logic. It's all programmable.
That could be a very long story... :-|
> "He has an OpenPIC, it's PowerPC SoC, so no ELCR either"
> Really - he's using a designed for PC ISA bridge etc.. he might have all
> sorts of stuff on it.
Ah, indeed. I meant to say that 8259 and ELCR are bypassed for PCI IRQs (or
at least Anton says so :-).
> Alan
MBR, Sergei
next prev parent reply other threads:[~2008-06-29 13:17 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-23 23:40 [PATCH -rt] ide: fix interrupts processing issue with preempt-able hardirqs Anton Vorontsov
2008-06-23 23:51 ` Ingo Molnar
2008-06-24 0:00 ` Anton Vorontsov
2008-06-25 12:34 ` Anton Vorontsov
2008-06-25 12:32 ` Alan Cox
2008-06-25 14:12 ` Anton Vorontsov
2008-06-25 13:15 ` Sergei Shtylyov
2008-06-25 14:22 ` Anton Vorontsov
2008-06-25 14:32 ` Alan Cox
2008-06-25 15:26 ` Anton Vorontsov
2008-06-25 14:59 ` Anton Vorontsov
2008-06-28 0:54 ` [PATCH v2 -rt] ide: workaround buggy hardware issues with preemptable hardirqs Anton Vorontsov
2008-06-28 1:09 ` Anton Vorontsov
2008-06-28 9:15 ` Alan Cox
2008-06-28 9:14 ` Alan Cox
2008-06-28 10:43 ` Sergei Shtylyov
2008-06-29 12:49 ` Alan Cox
2008-06-29 13:17 ` Sergei Shtylyov [this message]
2008-06-29 14:23 ` Anton Vorontsov
2008-06-28 10:30 ` Sergei Shtylyov
2008-06-28 11:31 ` Anton Vorontsov
2008-06-28 11:52 ` Sergei Shtylyov
2008-06-29 23:26 ` Benjamin Herrenschmidt
2008-06-23 23:52 ` [PATCH -rt] ide: fix interrupts processing issue with preempt-able hardirqs Anton Vorontsov
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