From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: linuxppc-dev@ozlabs.org, dwg@au1.ibm.com
Subject: Re: [PATCH 0/2] PowerPC: 4xx uic updates
Date: Wed, 14 Nov 2007 14:40:53 +1100 [thread overview]
Message-ID: <1195011653.28865.25.camel@pasglop> (raw)
In-Reply-To: <20071113200514.72d03792@zod.rchland.ibm.com>
On Tue, 2007-11-13 at 20:05 -0600, Josh Boyer wrote:
> On Tue, 13 Nov 2007 23:15:59 +0300
> Valentine Barshak <vbarshak@ru.mvista.com> wrote:
>
> > These patches update 4xx uic code. The first one
> > fixes a minor issue with edge-triggered interrupts,
> > while the second one makes it use generic level and edge irq
> > handlers. I've added irq ack'ing to the unmask callback for
> > level-triggered interrupts, because to de-assert them we have
> > to do 2 things is the exact order as below:
> > 1. de-assert the external source in the ISR.
> > 2. ack the IRQ on the UIC.
> > So, ack'ing level interrupts before unmasking them makes possible
> > to use generic level irq handler and it doesn't hurt, cause
> > we can never miss a level-triggered interrupt. It always stays
> > asserted untill the external source is removed and ack'ed on UIC.
> >
> > These have been tested on Sequoia PowerPC 440EPx board.
>
> Is my mail server slow, or did patch 2 of 2 never make it out?
It never reached me neither.
Ben
prev parent reply other threads:[~2007-11-14 3:46 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-13 20:15 [PATCH 0/2] PowerPC: 4xx uic updates Valentine Barshak
2007-11-13 20:25 ` [PATCH 1/2] PowerPC: 4xx uic: add mask_ack callback Valentine Barshak
2007-11-14 0:57 ` David Gibson
2007-11-13 20:27 ` [PATCH 2/2] PowerPC: make 4xx uic use generic edge and level irq handlers Valentine Barshak
2007-11-14 2:13 ` David Gibson
2007-11-14 3:43 ` Benjamin Herrenschmidt
2007-11-14 12:31 ` Valentine Barshak
2007-11-14 14:00 ` [PATCH 2/2] PowerPC: make 4xx uic use generic level irq handler Valentine Barshak
2007-11-14 2:05 ` [PATCH 0/2] PowerPC: 4xx uic updates Josh Boyer
2007-11-14 2:14 ` David Gibson
2007-11-14 3:40 ` Benjamin Herrenschmidt [this message]
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