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Date:      Wed, 2 Jun 1999 08:08:43 +0100 (BST)
From:      Doug Rabson <dfr@nlsystems.com>
To:        "Matthew N. Dodd" <winter@jurai.net>
Cc:        Mark Newton <newton@atdot.dotat.org>, current@freebsd.org
Subject:   Re: IRQ sharing with newbus
Message-ID:  <Pine.BSF.4.05.9906020807140.411-100000@herring.nlsystems.com>
In-Reply-To: <Pine.BSF.4.10.9906011938030.423-100000@sasami.jurai.net>

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On Tue, 1 Jun 1999, Matthew N. Dodd wrote:

> On Tue, 1 Jun 1999, Doug Rabson wrote:
> > For EISA, it should be possible to add RF_SHAREABLE to the
> > bus_alloc_resource call (assuming that EISA interrupts are shareable
> > like pci interrupts).
> 
> The observed behavior suggests that RF_SHAREABLE is not being honored.
> 
> dpt99: DPT PM2022A/9X FW Rev. 07CK, 1 channel, 64 CCBs
> dpt0: <DPT PM2x22A/9X> at slot 4 on eisa0
> dpt0: DPT PM2022A/9X FW Rev. 07CK, 1 channel, 64 CCBs
> dpt99: DPT PM2022A/9X FW Rev. 005A, 1 channel, 64 CCBs
> dpt1: <DPT PM2x22A/9X> at slot 5 on eisa0
> dpt1: No irq?!
> device_probe_and_attach: dpt1 attach returned -1
> 
> (The 'dpt99' lines are an artifact of the mechanism I'm using to complete
> the probe.)
> 
> Now, since the resource ranges aren't printed anymore, you can't see that
> both cards are using (set to use) the same IRQ.

The EISA bus code needs a new maintainer (who could put back such things
as resource reporting). Are you interested? You seem to be one of the few
people who actively uses this bus.

--
Doug Rabson				Mail:  dfr@nlsystems.com
Nonlinear Systems Ltd.			Phone: +44 181 442 9037




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