linux-kernel - Re: [PATCH 0/5] IOMMU: Make IOMMU-API ready for GART-like hardware

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Date:	Fri, 20 Jan 2012 17:05:52 +0100
From:	"joerg.roedel@....com" <joerg.roedel@....com>
To:	Hiroshi Doyu <hdoyu@...dia.com>
CC:	"iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ohad@...ery.com" <ohad@...ery.com>,
	"dwmw2@...radead.org" <dwmw2@...radead.org>,
	"davidb@...eaurora.org" <davidb@...eaurora.org>,
	"tony@...mide.com" <tony@...mide.com>,
	"Hiroshi.DOYU@...ia.com" <Hiroshi.DOYU@...ia.com>,
	"laurent.pinchart@...asonboard.com" 
	<laurent.pinchart@...asonboard.com>,
	"b08248@...il.com" <b08248@...il.com>,
	"scottwood@...escale.com" <scottwood@...escale.com>
Subject: Re: [PATCH 0/5] IOMMU: Make IOMMU-API ready for GART-like hardware

Hi,

On Fri, Jan 20, 2012 at 07:14:03AM +0100, Hiroshi Doyu wrote:
> From: Joerg Roedel <joerg.roedel@....com>
> Subject: [PATCH 0/5] IOMMU: Make IOMMU-API ready for GART-like hardware
> Date: Thu, 19 Jan 2012 15:30:00 +0100
> Message-ID: <1326983405-319-1-git-send-email-joerg.roedel@....com>
> 
> > Hi,
> > 
> > this patch-set adds two new functions the the IOMMU-API:
> > 
> > 	* iommu_domain_set_attr()
> > 	* iommu_domain_get_attr()
> > 
> > These are generic functions to set and change attributes of a domain.
> > The plan is to have a set of generic attributes implemented by more than
> > one IOMMU driver as well as driver specific ones. As an example for the
> > first type this patch-set also implements the DOMAIN_ATTR_GEOMETRY
> > attribute. It can be used to query information about the address space
> > window that can be remapped by the iommu hardware. With this attribute
> > is is very easy to support IOMMUs like GART and friends.
> 
> For Tegra GART & SMMU, this info is passed from board files as
> resource data via "platform_get_resource(,IORESOURCE_MEM,)". I think
> that this could be the attachement patch in Tegra case. The attached
> patches are based on the following post.
> 
> https://lkml.org/lkml/2012/1/5/26
> https://lkml.org/lkml/2012/1/5/27

I will start merging new patches next week. These patches are on my
list. Once we have settled on a version of the patches in this thread I
also apply your posted addtion.


	Joerg



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