On Sat, Dec 13, 2014 at 5:47 AM, Laurent Pinchart
wrote:
> Hello,
>
> On Friday 12 December 2014 13:15:51 Tomasz Figa wrote:
>> On Fri, Dec 12, 2014 at 5:48 AM, Rafael J. Wysocki wrote:
>> > On Thursday, December 11, 2014 04:51:37 PM Ulf Hansson wrote:
>> >> On 11 December 2014 at 16:31, Kevin Hil
On Sat, Dec 13, 2014 at 5:04 AM, Kevin Hilman wrote:
> Tomasz Figa writes:
>
> [...]
>
>> We have a power domain, which contains an IOMMU and an IP block, which
>> can do bus transactions through that IOMMU. Of course the IP block is
>> not aware of the IOMMU, because this is just an integration
Signed-off-by: Laurent Pinchart
---
drivers/iommu/ipmmu-vmsa.c | 243 +
1 file changed, 93 insertions(+), 150 deletions(-)
Hi Will,
This patch is a proof of concept of the Renesas IPMMU-VMSA driver integration
with the DMA mapping core. The code is ba
Add the seven IPMMU instances found in the r8a7791 to DT with a disabled
status.
Signed-off-by: Laurent Pinchart
---
arch/arm/boot/dts/r8a7791.dtsi | 56 ++
1 file changed, 56 insertions(+)
diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r
No board file instantiates the IPMMU using platform data. Now that we
have DT support, get rid of platform data.
Signed-off-by: Laurent Pinchart
---
drivers/iommu/ipmmu-vmsa.c | 24
include/linux/platform_data/ipmmu-vmsa.h | 24
2 f
Add the six IPMMU instances found in the r8a7790 to DT with a disabled
status.
Signed-off-by: Laurent Pinchart
---
arch/arm/boot/dts/r8a7790.dtsi | 48 ++
1 file changed, 48 insertions(+)
diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a
Signed-off-by: Laurent Pinchart
---
.../bindings/iommu/renesas,ipmmu-vmsa.txt | 37 ++
1 file changed, 37 insertions(+)
create mode 100644
Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.txt
Cc: devicet...@vger.kernel.org
diff --git a/Documentation/devi
Devices such as the system DMA controller are connected to multiple
micro TLBs of the same IOMMU. Support this.
Selective enabling of micro TLBs based on runtime device usage isn't
possible at the moment due to lack of support in the IOMMU and DMA
mapping APIs. Support for devices connected to dif
Make platform data optional when the device is instantiated from DT and
look up the micro-TLB number in the bus master DT node.
Signed-off-by: Laurent Pinchart
---
drivers/iommu/ipmmu-vmsa.c | 39 +++
1 file changed, 31 insertions(+), 8 deletions(-)
Cc: devic
When clearing PUD or PMD entries the child page table (if any) is freed
and the PUD or PMD entry is then cleared. This result in a small race
condition window during which a free page table could be accessed by the
IPMMU.
Fix it by clearing and flushing the PUD or PMD entry before freeing the
chil
The TLB must be invalidated after unmapping memory to remove stale TLB
entries. this was supposed to be performed already, but a bug in the
driver prevented the TLB invalidate function from being called. Fix it.
Signed-off-by: Laurent Pinchart
---
drivers/iommu/ipmmu-vmsa.c | 4 +---
1 file chan
The ARM IOMMU mapping needs to be released when attaching the device
fails. Add arm_iommu_release_mapping() to the error code path. This is
safe to call with a NULL mapping, so no specific check is needed.
Cleanup is also missing when failing to create a mapping. Jump to the
error code path in tha
From: Axel Lin
Signed-off-by: Axel Lin
Signed-off-by: Laurent Pinchart
---
drivers/iommu/ipmmu-vmsa.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index 9838d119045d..70bb5ba2aa51 100644
--- a/drivers/iommu/ipmmu-vm
Hello,
This patch fixes several small issues with the Renesas IPMMU-VMSA driver and
then implements DT support.
Patches 01/10 to 04/10 are small bug fixes. Please see the individual patches
for more information.
Patches 05/10 and 06/10 define DT bindings and implement DT support. Patches
07/10 a
Hi Will,
On Thursday 27 November 2014 11:51:14 Will Deacon wrote:
> Hi all,
>
> This series introduces a generic IOMMU page table allocation framework,
> implements support for ARM long-descriptors and then ports the arm-smmu
> driver over to the new code.
>
> There are a few reasons for doing t
Hi Will,
Please see below for another small comment.
On Thursday 27 November 2014 11:51:15 Will Deacon wrote:
> This patch introduces a generic framework for allocating page tables for
> an IOMMU. There are a number of reasons we want to do this:
>
> - It avoids duplication of complex table ma
Hi Will,
Please find my response inline. Search for "varun".
-Original Message-
From: Will Deacon [mailto:will.dea...@arm.com]
Sent: Saturday, December 06, 2014 12:18 AM
To: Sethi Varun-B16395
Cc: linux-arm-ker...@lists.infradead.org; iommu@lists.linux-foundation.org;
prem.malla...@broad
Hi Will,
On Sunday 14 December 2014 17:49:34 Laurent Pinchart wrote:
> On Wednesday 10 December 2014 15:08:53 Will Deacon wrote:
> > On Wed, Dec 10, 2014 at 02:52:56PM +, Rob Clark wrote:
> > > On Mon, Dec 1, 2014 at 11:57 AM, Will Deacon wrote:
> > > > This patch extends of_dma_configure so t
Hi Will,
On Monday 01 December 2014 16:57:12 Will Deacon wrote:
> This patch extends of_dma_configure so that it sets up the IOMMU for a
> device, as well as the coherent/non-coherent DMA mapping ops.
>
> Acked-by: Arnd Bergmann
> Acked-by: Marek Szyprowski
> Tested-by: Robin Murphy
> Signed-o
Hi Will,
On Wednesday 10 December 2014 15:08:53 Will Deacon wrote:
> On Wed, Dec 10, 2014 at 02:52:56PM +, Rob Clark wrote:
> > On Mon, Dec 1, 2014 at 11:57 AM, Will Deacon wrote:
> > > This patch extends of_dma_configure so that it sets up the IOMMU for a
> > > device, as well as the coheren
Hi Marek,
Thank you for the patch.
On Wednesday 19 November 2014 12:15:47 Marek Szyprowski wrote:
> This patch introduces IOMMU_OF_DECLARE-based initialization to the
> driver, which replaces subsys_initcall-based procedure.
> exynos_iommu_of_setup ensures that each sysmmu controller is probed
>
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