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

From: Scott Wood <[email-masked]>
Date: Wed, 19 Sep 2012 19:14:02 -0500

On 09/19/2012 08:49:14 AM, Kumar Gala wrote:
>=20
> On Sep 19, 2012, at 8:17 AM, <[email-masked]> =20
> <[email-masked]> wrote:
>=20
> > From: Varun Sethi <[email-masked]>
> >
> > This patchset provides the Freescale PAMU (Peripheral Access =20
> Management Unit) driver
> > and the corresponding IOMMU API implementation. PAMU is the IOMMU =20
> present on Freescale
> > QorIQ platforms. PAMU can authorize memory access, remap the memory =20
> 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 =20
> for storing iommu domain information
> >   pointer. This pointer is stored when the device is attached to a =20
> particular iommu domain.
> > 2. Addition of domain attributes required by the PAMU driver IOMMU =20
> 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 =20
> +++++++++++++++++++++++++++++++++++++
> > drivers/iommu/fsl_pamu.h          |  377 ++++++++++++++
> > drivers/iommu/fsl_pamu_domain.c   |  990 =20
> +++++++++++++++++++++++++++++++++++
> > 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
>=20
> I assume that another patch series will add device tree binding spec =20
> and update device trees for SoCs with PAMU?

The device trees already have PAMU in them.  A binding would be nice, =20
though.

-Scott=