linux-kernel - Re: Marvell 88NV9143 in mini-PCIe not working with intel

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Message-ID: <20130326151436.GE2727@8bytes.org>
Date:	Tue, 26 Mar 2013 16:14:37 +0100
From:	Joerg Roedel <joro@...tes.org>
To:	Andrew Cooks <acooks@...il.com>
Cc:	Gaudenz Steinlin <gaudenz@...iologie.ch>, jyli@...vell.com,
	"open list:INTEL IOMMU (VT-d)" <iommu@...ts.linux-foundation.org>,
	open list <linux-kernel@...r.kernel.org>,
	Shun Fu <fushun@...vell.com>,
	Alex Williamson <alex.williamson@...hat.com>,
	David Woodhouse <dwmw2@...radead.org>
Subject: Re: Marvell 88NV9143 in mini-PCIe not working with intel_iommu=on

On Fri, Mar 08, 2013 at 10:53:16AM +0800, Andrew Cooks wrote:
> I'm hoping one of the veteran developers would give some guidance for
> the best approach to enable more devices in future.

In cases like this where a device just uses the request-id of another
device you can make use of the existing quirk-code in
drivers/pci/quirks.c. Look at the function pci_get_dma_source() and add
your device there. This should also make it work with VT-d and AMD-Vi.


	Joerg


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