linux-kernel - Re: [RFC][PATCH 0/3] iommu/fsl: Freescale PAMU driver and IOMMU API implementation.

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Message-Id: <A6B66C5D-71EA-4E9F-8347-7413479BD3FC@kernel.crashing.org>
Date:	Wed, 19 Sep 2012 08:49:14 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	"<b16395@...escale.com>" <b16395@...escale.com>
Cc:	<iommu@...ts.linux-foundation.org>, <joerg.roedel@....com>,
	<linux-kernel@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>,
	Varun Sethi <Varun.Sethi@...escale.com>
Subject: Re: [RFC][PATCH 0/3] iommu/fsl: Freescale PAMU driver and IOMMU API implementation.


On Sep 19, 2012, at 8:17 AM, <b16395@...escale.com> <b16395@...escale.com> wrote:

> From: Varun Sethi <Varun.Sethi@...escale.com>
> 
> This patchset provides the Freescale PAMU (Peripheral Access Management Unit) driver
> and the corresponding IOMMU API implementation. PAMU is the IOMMU present on Freescale
> QorIQ platforms. PAMU can authorize memory access, remap the memory address, and remap 
> the I/O transaction type.
> 
> This set consists of the following patches:
> 1. Addition of 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 iommu domain.
> 2. Addition of domain attributes required by the PAMU driver IOMMU API.
> 3. PAMU driver and IOMMU API implementation.
> 
> Varun Sethi (3):
>  Store iommu domain information pointer in archdata.
>  Add iommu domain attributes required by fsl PAMU driver.
>  FSL PAMU driver and IOMMU API implementation.
> 
> arch/powerpc/include/asm/device.h |    4 +
> drivers/iommu/Kconfig             |    7 +
> drivers/iommu/Makefile            |    1 +
> drivers/iommu/fsl_pamu.c          | 1033 +++++++++++++++++++++++++++++++++++++
> drivers/iommu/fsl_pamu.h          |  377 ++++++++++++++
> drivers/iommu/fsl_pamu_domain.c   |  990 +++++++++++++++++++++++++++++++++++
> drivers/iommu/fsl_pamu_domain.h   |   94 ++++
> drivers/iommu/fsl_pamu_proto.h    |   49 ++
> include/linux/iommu.h             |   30 ++
> 9 files changed, 2585 insertions(+), 0 deletions(-)
> create mode 100644 drivers/iommu/fsl_pamu.c
> create mode 100644 drivers/iommu/fsl_pamu.h
> create mode 100644 drivers/iommu/fsl_pamu_domain.c
> create mode 100644 drivers/iommu/fsl_pamu_domain.h
> create mode 100644 drivers/iommu/fsl_pamu_proto.h

I assume that another patch series will add device tree binding spec and update device trees for SoCs with PAMU?

- k

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