From: Matthew Dharm <mdharm@momenco.com>
To: Dominic Sweetman <dom@algor.co.uk>
Cc: Jun Sun <jsun@mvista.com>, Linux-MIPS <linux-mips@linux-mips.org>
Subject: Re: Interrupt handling....
Date: Wed, 4 Sep 2002 09:40:14 -0700 [thread overview]
Message-ID: <20020904094014.B5241@momenco.com> (raw)
In-Reply-To: <200209040953.KAA17466@mudchute.algor.co.uk>; from dom@algor.co.uk on Wed, Sep 04, 2002 at 10:53:55AM +0100
On Wed, Sep 04, 2002 at 10:53:55AM +0100, Dominic Sweetman wrote:
>
> Matthew,
>
> > Okay... I think I've got a problem that isn't covered by the usual
> > examples.
>
> Possibly this is too simple an answer and is stuff you know quite well
> already...
Yeah, it is. See my response to Maciej's posting....
> > Which, as you can see, attempts to access address 0xfc00000c.
>
> But that address is in the MIPS CPU's 'kseg2' region. Addresses there
> are always translated by the TLB, and you haven't got an entry.
It's also the physical address.
And this is the heart of the problem. I set up an ioremap, so I thought
that the TLB exception handler would fix this for me. It looks like that
code won't do anything if the exception was generated from an interrupt...
Or am I reading it wrong? I'm not an expert on the TLB code...
> You could read the book ("See MIPS Run")...
I read it quite some time ago. My copy got very dog-eared before I had the
majority of the information committed to memory. Nice book, BTW.
Matt
--
Matthew Dharm Work: mdharm@momenco.com
Senior Software Designer, Momentum Computer
next prev parent reply other threads:[~2002-09-04 16:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3D6E87EB.4010000@mvista.com>
2002-09-04 1:10 ` Interrupt handling Matthew Dharm
2002-09-04 9:53 ` Dominic Sweetman
2002-09-04 12:58 ` Maciej W. Rozycki
2002-09-04 16:36 ` Matthew Dharm
2002-09-04 20:08 ` Dominic Sweetman
2002-09-05 9:17 ` Maciej W. Rozycki
2002-09-04 16:40 ` Matthew Dharm [this message]
2002-09-04 17:02 ` Maciej W. Rozycki
2002-09-04 18:16 ` Matthew Dharm
2002-09-05 9:04 ` Maciej W. Rozycki
2002-09-05 16:25 Jon Burgess
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