Re: [PATCH 1/6 v8] iommu/fsl: Store iommu domain information pointer in archdata.

[Kumar Gala <galak@kernel.crashing.org>]

On Feb 27, 2013, at 6:04 AM, Sethi Varun-B16395 wrote:

> Hi Kumar,Ben,
> I am implementing the Freescale PAMU (IOMMU) driver using the Linux IOMMU API. In this particular patch, I have added a new field to dev_archdata structure to store the dma domain information.
> This field is updated whenever we attach a device to an iommu domain.
> 
> Regards
> Varun

Would be good to see if this overlaps with Alexey's work for IOMMU driver for powernv.

- k

> 
>> -----Original Message-----
>> From: Joerg Roedel [mailto:joro@8bytes.org]
>> Sent: Wednesday, February 27, 2013 5:01 PM
>> To: Sethi Varun-B16395
>> Cc: iommu@lists.linux-foundation.org; linuxppc-dev@lists.ozlabs.org;
>> linux-kernel@vger.kernel.org; Wood Scott-B07421; Yoder Stuart-B08248
>> Subject: Re: [PATCH 1/6 v8] iommu/fsl: Store iommu domain information
>> pointer in archdata.
>> 
>> On Mon, Feb 18, 2013 at 06:22:14PM +0530, Varun Sethi wrote:
>>> Add a new field in the device (powerpc) archdata structure for storing
>>> iommu domain information pointer. This pointer is stored when the
>>> device is attached to a particular domain.
>>> 
>>> 
>>> Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com>
>>> ---
>>> - no change.
>>> arch/powerpc/include/asm/device.h |    4 ++++
>>> 1 files changed, 4 insertions(+), 0 deletions(-)
>>> 
>>> diff --git a/arch/powerpc/include/asm/device.h
>>> b/arch/powerpc/include/asm/device.h
>>> index 77e97dd..6dc79fe 100644
>>> --- a/arch/powerpc/include/asm/device.h
>>> +++ b/arch/powerpc/include/asm/device.h
>>> @@ -28,6 +28,10 @@ struct dev_archdata {
>>> 		void		*iommu_table_base;
>>> 	} dma_data;
>>> 
>>> +	/* IOMMU domain information pointer. This would be set
>>> +	 * when this device is attached to an iommu_domain.
>>> +	 */
>>> +	void			*iommu_domain;
>> 
>> Please Cc the PowerPC Maintainers on this, so that they can have a look
>> at it. This also must be put this into an #ifdef CONFIG_IOMMU_API.
>> 
>> 
>> 	Joerg
>> 
>> 
> 
> 
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