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

On 09/19/2012 08:49:14 AM, Kumar Gala wrote:

=20
On Sep 19, 2012, at 8:17 AM, [off-list ref] =20
[off-list ref] wrote:
=20

quoted

From: Varun Sethi <redacted>

This patchset provides the Freescale PAMU (Peripheral Access =20

Management Unit) driver

quoted

and the corresponding IOMMU API implementation. PAMU is the IOMMU =20

present on Freescale

quoted

QorIQ platforms. PAMU can authorize memory access, remap the memory =20

address, and remap

quoted

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

quoted

  pointer. This pointer is stored when the device is attached to a =20

particular iommu domain.

quoted

2. Addition of domain attributes required by the PAMU driver IOMMU =20

API.

quoted

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

+++++++++++++++++++++++++++++++++++++

quoted

drivers/iommu/fsl_pamu.h          |  377 ++++++++++++++
drivers/iommu/fsl_pamu_domain.c   |  990 =20

+++++++++++++++++++++++++++++++++++

quoted

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=