Currently map and unmap are implemented as events under a
common trace class declaration. The common class forces
trace_unmap() to require a bogus physical address argument
that it doesn't use. Changing unmap to report unmapped size
will provide useful information for debugging. Remove common
map_u
iommu_unmap() calls trace_unmap() with changed iova and original
size. trace_unmap() should report original iova instead. Change
iommu_unmap() to call trace_unmap() with original iova.
Signed-off-by: Shuah Khan
Reported-by: Alex Williamson
---
drivers/iommu/iommu.c | 3 ++-
1 file changed, 2 in
Hey Will,
On Fri, 2015-01-16 at 20:33 +, Will Deacon wrote:
> Hi Alex,
>
> Thanks for having a look.
>
> On Fri, Jan 16, 2015 at 05:41:51PM +, Alex Williamson wrote:
> > On Fri, 2015-01-16 at 16:58 +, Will Deacon wrote:
> > > Some IOMMU drivers (e.g. the ARM SMMU) require not only th
Hi Alex,
Thanks for having a look.
On Fri, Jan 16, 2015 at 05:41:51PM +, Alex Williamson wrote:
> On Fri, 2015-01-16 at 16:58 +, Will Deacon wrote:
> > Some IOMMU drivers (e.g. the ARM SMMU) require not only the IOMMU group
> > for a PCI device, but also the effective alias of the device
On 16/01/15 07:21, Yong Wu wrote:
[...]
Now that the server seems to be properly accessible again, I've made a
branch with both series available here:
git://linux-arm.org/linux-rm iommu/dma
Note that in the current state it also depends on having the ARM SMMU
driver selected in the config,
On Fri, 2015-01-16 at 16:58 +, Will Deacon wrote:
> Some IOMMU drivers (e.g. the ARM SMMU) require not only the IOMMU group
> for a PCI device, but also the effective alias of the device (as seen by
> the IOMMU) in order to program the translations correctly.
>
> This patch extends iommu_group
Hi all,
This series of two patches removes the (incomplete) PCI DMA alias parsing
code from the ARM SMMU driver and instead modifies the generic
iommu_group_get_for_pci_dev implementation to return the alias as well as
the group.
One snag is that iommu_group_get_for_pci_dev is no longer static af
Some IOMMU drivers (e.g. the ARM SMMU) require not only the IOMMU group
for a PCI device, but also the effective alias of the device (as seen by
the IOMMU) in order to program the translations correctly.
This patch extends iommu_group_get_for_pci_dev to return the DMA alias
of the device as well a
Core code can walk the PCI topology and extract the DMA alias for us
whilst retrieving the IOMMU group for a device, so use that instead.
Signed-off-by: Will Deacon
---
drivers/iommu/arm-smmu.c | 58 ++--
1 file changed, 31 insertions(+), 27 deletions(
On Thu, 2015-01-15 at 18:35 +, Robin Murphy wrote:
> On 13/01/15 08:02, Yingjoe Chen wrote:
> > On Mon, 2015-01-12 at 20:48 +, Robin Murphy wrote:
> >> Hi all,
> >>
> >> Whilst it's a long way off perfect, this has reached the point of being
> >> functional and stable enough to be useful, s
iommu_map() calls trace_map() with iova and size. trace_map()
should report original iova and original size as opposed to
iova and size after they get changed during mapping. size is
always zero at the end of mapping which is useless to report
and iova as it gets incremented, it is not as useful as
Hello Eric,
I'm not sure I understand the issue here. I tried to reproduce the bug by
triggering an interrupt without unmasking it, but the interrupt is unmasked
when the program access to the device (vfio_platform_open reinit IRQs).
May I have more details on the bug ?
Thanks
On Fri, Jan 9, 20
Hi Joerg,
The following changes since commit eaa27f34e91a14cdceed26ed6c6793ec1d186115:
linux 3.19-rc4 (2015-01-11 12:44:53 -0800)
are available in the git repository at:
git://linuxtv.org/pinchartl/fbdev.git iommu/next
for you to fetch changes up to 78e1f974dd351ac82d978e3aac2d27422013f914
On Fri, 2015-01-16 at 11:33 +0100, Marek Szyprowski wrote:
> Hello,
>
> On 2014-12-02 10:59, Sjoerd Simons wrote:
> > Hey Marek, Inki,
> >
> > On Wed, 2014-11-19 at 12:15 +0100, Marek Szyprowski wrote:
> >> Hello Everyone,
> >>
> >> This is another attempt to finally make Exynos SYSMMU driver full
On Fri, Jan 09, 2015 at 01:54:12PM +, Will Deacon wrote:
> This is version two of the patch series I originally posted here:
>
> v1:
> http://lists.infradead.org/pipermail/linux-arm-kernel/2014-November/306786.html
>
> Changes since v1 include:
>
> - Separated 32-bit and 64-bit regimes
>
Hello,
On 2014-12-02 10:59, Sjoerd Simons wrote:
Hey Marek, Inki,
On Wed, 2014-11-19 at 12:15 +0100, Marek Szyprowski wrote:
Hello Everyone,
This is another attempt to finally make Exynos SYSMMU driver fully
integrated with DMA-mapping subsystem. The main change from previous
version is a reb
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
before its master device.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 28 +
This patch adds support for assigning more than one SYSMMU controller to
the master device. This has been achieved simply by chaning the struct
device pointer in struct exynos_iommu_owner into the list of struct
sysmmu_drvdata of all controllers assigned to the given master device.
Signed-off-by:
This patch renames some variables to make the code easier to understand.
'domain' is replaced by 'iommu_domain' (more generic entity) and really
meaning less 'priv' by 'domain' to reflect its purpose.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 191 ++--
Signed-off-by: Marek Szyprowski
---
arch/arm/boot/dts/exynos5420.dtsi | 178 ++
1 file changed, 178 insertions(+)
diff --git a/arch/arm/boot/dts/exynos5420.dtsi
b/arch/arm/boot/dts/exynos5420.dtsi
index 03ef2481c640..6d8e73bcfff8 100644
--- a/arch/arm/boot/dt
Add a few words of comment to all internal structures used by the driver.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 49 +---
1 file changed, 33 insertions(+), 16 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iom
This patch removes reading of REG_MMU_VERSION register on every tlb
operation and caches SYSMMU version in driver's internal data.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 13 +
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/iommu/exyn
This patch adds implementation of of_xlate callback, which prepares
masters device for attaching to IOMMU. This callback is called during
creating devices from device tree.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 28
1 file changed, 28 inse
This patch fixes support for runtime power management for SYSMMU
controllers, so they are enabled when master device is attached.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/ex
This patch removes useless spinlocks and other unused members from
struct exynos_iommu_owner. There is no point is protecting this
structure by spinlock because content of this structure doesn't change
and other structures have their own spinlocks.
Signed-off-by: Marek Szyprowski
---
drivers/iom
This patch removes two unneeded functions, which are not a part of
generic IOMMU API and were never used by any other driver.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 31 ---
1 file changed, 31 deletions(-)
diff --git a/drivers/iommu/exynos-
The driver doesn't need to do anything important in device add/remove
callbacks, because initialization will be done from device-tree specific
callbacks added later. IOMMU groups created by current code were never
used.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 28 --
Removed following unused includes: , ,
and .
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 14 +-
1 file changed, 5 insertions(+), 9 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index ef7172551a39..c53cc8f61176 100644
--
This patch simplifies the code by:
- refactoring function parameters from struct device pointer to direct pointer
to struct sysmmu drvdata
- moving list_head enteries from struct exynos_iommu_owner directly to struct
sysmmu_drvdata
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iom
After refactoring functions to use pointer to struct sysmmu_drvdata
directly, some functions became useless and thus never used, so remove
them completely.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 43 ---
1 file changed, 43 deleti
SYSMMU devices will be registered early before any other devices and
before calling arch_initcall. To add them to respective power domains,
additional scan of all platform devices is needed.
Signed-off-by: Marek Szyprowski
---
arch/arm/mach-exynos/pm_domains.c | 9 -
1 file changed, 8 in
Signed-off-by: Marek Szyprowski
---
arch/arm/boot/dts/exynos5250.dtsi | 250 ++
1 file changed, 250 insertions(+)
diff --git a/arch/arm/boot/dts/exynos5250.dtsi
b/arch/arm/boot/dts/exynos5250.dtsi
index cf4a6ec62f71..30d29ff502a7 100644
--- a/arch/arm/boot/dt
This patch adds code, which detach sub-device nodes from default iommu
domain if such has been configured.
Signed-off-by: Marek Szyprowski
---
drivers/gpu/drm/exynos/exynos_drm_iommu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_iommu.c
b/drivers/gpu
Hello Everyone,
This is yet another attempt to get Exynos SYSMMU driver with integrated
with IOMMU & DMA-mapping subsystems. The main change from previous
version is a rebase onto latest v3.19-rc4 kernel base, which includes
"automatic DMA configuration for IOMMU masters" patches developed by
Will
This patch adds System MMU nodes that are specific to Exynos4210/4x12 series.
Signed-off-by: Marek Szyprowski
---
arch/arm/boot/dts/exynos4.dtsi| 118 ++
arch/arm/boot/dts/exynos4210.dtsi | 23
arch/arm/boot/dts/exynos4x12.dtsi | 82
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