In commit <8bf478163e69> ("iommu/vt-d: Split up iommu->domains array"), it
it splits iommu->domains in two levels. Each first level contains 256
entries of second level. In case of the ndomains is exact a multiple of
256, it would have one more extra first level entry for current
implementation.
T
Alex, Robin,
While my 3 part series primarily addresses the problematic of mapping
MSI doorbells into arm-smmu, it fails in :
1) determining whether the MSI controller is downstream or upstream to
the IOMMU,
=> indicates whether the MSI doorbell must be mapped
=> participates in t
On 05/20/2016 03:48 PM, Marek Szyprowski wrote:
> Removal of IOMMU driver cannot be done reliably, so Exynos IOMMU driver
> doesn't support this operation. It is essential for system operation, so
> it makes sense to prevent unbinding by disabling bind/unbind sysfs
> feature for SYSMMU controller d
Removal of IOMMU driver cannot be done reliably, so Exynos IOMMU driver
doesn't support this operation. It is essential for system operation, so
it makes sense to prevent unbinding by disabling bind/unbind sysfs
feature for SYSMMU controller driver to avoid kernel ops or trashing
memory caused by s
On Friday 20 May 2016 13:44:10 Arnd Bergmann wrote:
> > #define GET_CTX_REG(reg, base, ctx) \
> > (readl((base) + (reg) + ((ctx) << CTX_SHIFT)))
> >
> > -#define SET_GLOBAL_REG(reg, base, val) writel((val), ((base) +
> > (reg)))
> > +/*
> > + * The writes to
On Friday 20 May 2016 16:24:53 Sricharan R wrote:
> While using the generic pagetable ops the tlb maintenance
> operation gets completed in the sync callback. So use writel_relaxed
> for all register access and add a mb() at appropriate places.
>
> Signed-off-by: Sricharan R
> ---
> drivers/iomm
Hi Robin/Laurent,
>> -Original Message-
>> From: linux-arm-kernel [mailto:linux-arm-kernel-
>> boun...@lists.infradead.org] On Behalf Of Marek Szyprowski
>> Sent: Thursday, May 12, 2016 6:23 PM
>> To: Sricharan R ; will.dea...@arm.com;
>> robin.mur...@arm.com; j...@8bytes.org; iommu@lists.
Hi Arnd,
>>
>>If you need the barrier after the write, it probably was already faulty
>>before, because writel only implies a barrier before the store, not
>>after. Of course all the barriers likely made the whole process so
>>slow that you never hit that race in the end.
>
>ya, it could have work
Now that the driver is DT adapted, bus_set_iommu gets called only
when on compatible matching. So the driver should not break multiplatform
builds now. So remove the BROKEN config.
Signed-off-by: Sricharan R
---
drivers/iommu/Kconfig | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/iom
There are only two functions left in msm_iommu_dev.c. Move it to
msm_iommu.c and delete the file.
Signed-off-by: Sricharan R
---
drivers/iommu/Makefile| 2 +-
drivers/iommu/msm_iommu.c | 182
drivers/iommu/msm_iommu_dev.c | 212 -
This iommu uses the armv7 short descriptor format. So use the
generic ARMV7S pagetable ops instead of rewriting the same stuff
in the driver.
Signed-off-by: Sricharan R
---
drivers/iommu/Kconfig | 1 +
drivers/iommu/msm_iommu.c | 400 --
2 files
While using the generic pagetable ops the tlb maintenance
operation gets completed in the sync callback. So use writel_relaxed
for all register access and add a mb() at appropriate places.
Signed-off-by: Sricharan R
---
drivers/iommu/msm_iommu.c | 24 +++--
drivers/iommu/msm_iommu_h
The msm_iommu.c driver currently works based on platform data.
A single master device can be connected to more than one iommu and multiple
contexts in each of the iommu. This association between master and iommus was
represented from platform data using parent/child devices. The master drivers
were
The MSM IOMMU is an implementation compatible with the ARM VMSA short
descriptor page tables. It provides address translation for bus masters outside
of the CPU, each connected to the IOMMU through a port called micro-TLB.
Adding the DT bindings for the same.
Signed-off-by: Sricharan R
---
.../d
The driver currently works based on platform data. Remove this
and add support for DT. A single master can have multiple ports
connected to more than one iommu.
master
|
|
|
---
This adds the xlate callback which gets invoked during
device registration from DT. The master devices gets added
through this.
Signed-off-by: Sricharan R
---
drivers/iommu/msm_iommu.c | 61 +--
1 file changed, 59 insertions(+), 2 deletions(-)
diff --
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