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
This patch adds missing smmu_g2d clock implementation and updates
comment about Exynos4 clocks from 278-282 range. Those clocks are
available on all Exynos4 SoC series, so the misleading comment has been
removed.
Signed-off-by: Marek Szyprowski
Acked-by: Tomasz Figa
---
drivers/clk/samsung/clk
discussed separately after the basic support gets merged
3. removed support for power domain notifier-based runtime power
management - this also will be discussed separately later
I hope that the driver with above changes will be easier to be merged to
v3.18.
Best regards
Marek Szyprowski
Samsung
If device has no max_seg_size set, we assume that there is no limit and
force it to DMA_BIT_MASK(32) to always use contiguous mappings in DMA
address space.
Signed-off-by: Marek Szyprowski
---
arch/arm/mm/dma-mapping.c | 16
1 file changed, 16 insertions(+)
diff --git a/arch
This patches change initialization time of power domain driver from client
device driver bind to device creation. This lets other core drivers to
register power domain notifiers before client driver is bound.
Signed-off-by: Marek Szyprowski
---
arch/arm/mach-exynos/pm_domains.c | 12
This patch adds System MMU nodes that are specific to Exynos4210/4x12 series.
Signed-off-by: Marek Szyprowski
---
arch/arm/boot/dts/exynos4.dtsi| 117 ++
arch/arm/boot/dts/exynos4210.dtsi | 23
arch/arm/boot/dts/exynos4x12.dtsi | 82
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
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
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
---
dr
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
: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 11 +--
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 1b3f00726cd4..cf36cdecf335 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/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
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 | 32
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
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 a75b06365f97..5eb999d7653a 100644
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
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
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
Hello,
On 2014-09-24 19:06, Will Deacon wrote:
Hi Marek,
On Tue, Sep 16, 2014 at 12:54:28PM +0100, Marek Szyprowski wrote:
If device has no max_seg_size set, we assume that there is no limit and
force it to DMA_BIT_MASK(32) to always use contiguous mappings in DMA
address space.
Signed-off
bbert
Cc: Jean Delvare
Cc: Marek Szyprowski
Cc: Konrad Rzeszutek Wilk
Cc: David Woodhouse
Cc: Don Dutile
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Andi Kleen
Cc: Yinghai Lu
Cc: x...@kernel.org
Cc: iommu@lists.linux-foundation.org
Acked-by: Marek Szyprowski
abled by COMPILE_TEST option (here the issue is caused by
SHMOBILE_IOMMU, which
otherwise cannot be enabled when no-mmu systems are selected).
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
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Initialize all structures and register to iommu subsystem only on Exynos
compatible platforms.
Signed-off-by: Marek Szyprowski
Acked-by: Arnd Bergmann
---
drivers/iommu/exynos-iommu.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos
p the limited
support I'd cooked up from this patch set in the next version.
Great! That's more or less something I've already implemented on top of your
previous patchset, as I didn't have any good idea how to manage multiple
masters
separately. I'm waiting for your next u
ed is the right approach.
Best regards
--
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Samsung R&D Institute Poland
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return np->data;
+}
+
+extern struct of_device_id __iommu_of_table;
+
+typedef int (*of_iommu_init_fn)(struct device_node *);
+
+#define IOMMU_OF_DECLARE(name, compat, fn) \
+ _OF_DECLARE(iommu, name, compat, fn, of_iommu_init_fn)
+
#endif /* __OF_IOMMU_H */
Best regards
--
Marek
There is no point trying to initialize dma_ops with
arm_get_iommu_dma_map_ops() if no iommu has been provided.
Signed-off-by: Marek Szyprowski
---
arch/arm/mm/dma-mapping.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
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
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
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
---
dr
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
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
This patch adds System MMU nodes that are specific to Exynos4210/4x12 series.
Signed-off-by: Marek Szyprowski
---
arch/arm/boot/dts/exynos4.dtsi| 117 ++
arch/arm/boot/dts/exynos4210.dtsi | 23
arch/arm/boot/dts/exynos4x12.dtsi | 82
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
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/
Make of_iommu_set_ops() parameter attribute consistent with
bus_set_iommu().
Signed-off-by: Marek Szyprowski
---
include/linux/of_iommu.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/of_iommu.h b/include/linux/of_iommu.h
index 7ded21c0ccdf..d03abbb11c34
hat Will's proposal works fine and
significantly simplifies the driver code.
Best regards
Marek Szyprowski
Samsung R&D Institute Poland
Changelog:
v3:
- rebased onto "[RFC PATCH v4 0/8] Introduce automatic DMA
configuration for IOMMU masters"
- added some minor fixes for iom
IOMMU drivers can be initialized from of_iommu helpers. Such drivers don't
need to provide device_add callbacks to operate properly, so there is no
need to fail initialization if the callback is missing.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/iommu.c | 2 +-
1 file chang
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
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
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 a5b32cdeec2d..cd28dc09db39 100644
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
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
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
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
s patchset and it
works fine,
You can find them in the "[PATCH v3 00/19] Exynos SYSMMU (IOMMU)
integration with DT
and DMA-mapping subsystem" thread.
You can add to all your patches:
Acked-by: Marek Szyprowski
I'm also interested in adding get_default_domain() callback, but I
: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 11 +--
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 93b97df772f1..77dec32c59ef 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos
Hello,
On 2014-11-19 12:41, Will Deacon wrote:
Hi Marek,
On Wed, Nov 19, 2014 at 11:21:26AM +, Marek Szyprowski wrote:
On 2014-11-14 19:56, Will Deacon wrote:
Hello everybody,
Here is the fourth iteration of the RFC I've previously posted here:
RFCv1:
http://lists.infradea
ed-by: Arnd Bergmann
Acked-by: Joerg Roedel
Acked-by: Marek Szyprowski
Tested-by: Robin Murphy
Signed-off-by: Will Deacon
---
drivers/iommu/of_iommu.c | 17 +
include/asm-generic/vmlinux.lds.h | 2 ++
include/linux/iommu.h | 2 ++
include/linux/of_io
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
re we are in the release cycle.
If that's not the case, why even bother getting this hack into 3.19 if
nobody uses it and we're going to change it in 3.20 anyway?
There are Exynos SYSMMU patches ready & waiting for this gets merged...
Best regards
--
Marek Szyprowski, PhD
Samsung
enabled by bootloader.
However please not that I would really like to have something merged. The
discussion about iommu controllers lasts for about 2 years and we still
don't
have ANYTHING working in mainline, so lets merge the of_iommu glue and then
check how the remaining issues can be solved.
ot;default", as might be expected. In the process, clean up
a bit by replacing the bare constants with slightly more meaningful
macros and removing the superfluous "else" statements.
Signed-off-by: Robin Murphy
Acked-by: Marek Szyprowski
---
Hi, various maintainers from Git
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
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
ists/arm-kernel/msg391148.html)
Kukjin, could you merge those patches?
3. Exynos DRM fix. This patch in my opinion should go Exynos DRM tree.
Inki, could you merge it?
Best regards
Marek Szyprowski
Samsung R&D Institute Poland
Changelog:
v4:
- rebased onto v3.19-rc4 and other Exynos DTS qu
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
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
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
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
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
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
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
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
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
---
dr
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
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/
: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 11 +--
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index e40e699423a6..c6cca44d7858 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos
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
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
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
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
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
of_dma_configure(struct device *dev, struct
>> device_node *np, bool force_dma)
>> dev_dbg(dev, "device is%sbehind an iommu\n",
>> iommu ? " " : " not ");
>>
>> + /*
>> +* There is at least one case w
(struct device *dev, size_t
>> size, void *vaddr,
>> dma_addr_t dma_handle, unsigned long attrs)
>> {
>> if (!dma_free_from_pool(vaddr, PAGE_ALIGN(size))) {
>> - void *kaddr = phys_to_virt(dma_to_phys(dev, dma_handle));
>> + phys_addr_t phy
1 ("dma-mapping: support highmem in the generic remap
allocator")
Signed-off-by: Marek Szyprowski
---
kernel/dma/remap.c | 8 +++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/kernel/dma/remap.c b/kernel/dma/remap.c
index 68a64e3ff6a1..8a44317cfc1a 100644
--- a/kernel
(dev);
> return dma_default_get_required_mask(dev);
> @@ -341,7 +344,6 @@ void *dma_alloc_attrs(struct device *dev, size_t size,
> dma_addr_t *dma_handle,
> const struct dma_map_ops *ops = get_dma_ops(dev);
> void *cpu_addr;
>
> - BUG_ON(!ops);
>
Hi Christoph,
On 2018-12-14 15:24, Christoph Hellwig wrote:
> On Fri, Dec 14, 2018 at 03:11:37PM +0100, Marek Szyprowski wrote:
>> Hi Christoph,
>>
>> On 2018-12-07 20:07, Christoph Hellwig wrote:
>>> Avoid expensive indirect calls in the fast path DMA mapping
>
ent from ops
from local variable.
>
> /* Ignore all other errors apart from EPROBE_DEFER */
> if (err == -EPROBE_DEFER) {
Best regards
--
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Samsung R&D Institute Poland
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Hi Joerg,
On 2018-12-19 15:34, Joerg Roedel wrote:
> Hi Marek,
>
> thanks for the report!
>
> On Wed, Dec 19, 2018 at 10:54:18AM +0100, Marek Szyprowski wrote:
>> On 2018-12-11 16:05, Joerg Roedel wrote:
>>> From: Joerg Roedel
>>>
>>> Make
ptions about the DMA mapping internals. Feel
free to add my:
Reviewed-by: Marek Szyprowski
Best regards
--
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Samsung R&D Institute Poland
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ed only when no IOMMU is available, but I agree that the
hacky code should be replaced by a generic code if possible.
Tested-by: Marek Szyprowski
V4L2 pipeline works fine on older Exynos-based boards with CMA and IOMMU
disabled.
> ---
> .../common/videobuf2/videobuf2-dma-contig.c | 41
stays with non-IOMMU dma_ops.
Reported-by: Tobias Jakobi
Fixes: 1874619a7df4 "ARM: dma-mapping: Set proper DMA ops in
arm_iommu_detach_device()"
Signed-off-by: Marek Szyprowski
---
arch/arm/mm/dma-mapping.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --
Hi Robin,
On 2019-01-14 17:38, Robin Murphy wrote:
> On 14/01/2019 16:09, Thierry Reding wrote:
>> On Mon, Jan 14, 2019 at 02:22:40PM +0100, Marek Szyprowski wrote:
>>> This reverts commit 1874619a7df4b14b23b14877e705ae15325773e3.
>>>
>>> That patch broke IOMMU
Hi Christoph,
On 2019-01-17 18:21, Christoph Hellwig wrote:
> On Mon, Jan 14, 2019 at 01:42:26PM +0100, Marek Szyprowski wrote:
>> On 2019-01-11 19:17, Christoph Hellwig wrote:
>>> vb2_dc_get_userptr pokes into arm direct mapping details to get the
>>> resemblan
ma_map_resource
> implementation to not provide a somewhat dangerous default and improve
> the error handling.
>
> Changes since v1:
> - don't apply bus offsets in dma_direct_map_resource
Works fine on older Exynos based boards with IOMMU and CMA disabled.
Tested-by: Marek
omatically installed by its counterpart.
>
> Reported-by: Tobias Jakobi
> Reported-by: Marek Szyprowski
> Fixes: 1874619a7df4 "ARM: dma-mapping: Set proper DMA ops in
> arm_iommu_detach_device()"
> Tested-by: Tobias Jakobi
> Signed-off-by: Robin Murphy
> ---
>
> S
the first CRTC device that has been
registered. Then that device is used for DMA-mapping calls. It is not
very elegant, but works fine and allows to use standard DMA-mapping calls.
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
___
i
ed from trivial allocations.
>
> Signed-off-by: Nicolin Chen
Acked-by: Marek Szyprowski
> ---
> kernel/dma/contiguous.c | 22 +++---
> 1 file changed, 19 insertions(+), 3 deletions(-)
>
> diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c
> index
This patch ensures that all devices will be first detached from the
provided domain and then attached to the default_domain if such has been
provided.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/iommu.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a
This patch ensures that devices attached to the default_domain will be
first detached from it before attaching to new domain. To avoid forward
declaration, __iommu_attach_group() function has been moved to new place
in the source code.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/iommu.c
Marek Szyprowski
Samsung R&D Institute Poland
Patch summary:
Marek Szyprowski (2):
iommu: call detach also for default_domain before attaching to new one
iommu: fix default domain handling in __iommu_detach_group()
drivers/iommu/iommu.c | 48 +++
architecture.
Best regards
Marek Szyprowski
Samsung R&D Institute Poland
Patch summary:
Marek Szyprowski (11):
iommu: exynos: rework iommu group initialization
iommu: exynos: add support for IOMMU_DOMAIN_DMA domain type
iommu: exynos: remove ARM-specific cache flush interface
iommu: ex
because all SYSMMU controllers are in the same address space (where
DMA address equals physical address) and the DMA-mapping calls are done
mainly to flush CPU cache to make changes visible to SYSMMU controllers.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 74
This patch simplifies the code for handling of flpdcache invalidation.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 13 -
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 15787a1
All clock API function can be called on NULL clock, so simplify code avoid
checking of master clock presence.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 32
1 file changed, 12 insertions(+), 20 deletions(-)
diff --git a/drivers/iommu
Exynos SYSMMU bindings documentation was merged before generic IOMMU
binding have been introduced. This patch updates documentation to match
current state.
Signed-off-by: Marek Szyprowski
---
.../devicetree/bindings/iommu/samsung,sysmmu.txt | 19 ---
1 file changed, 8
Add Marek Szyprowski as maintainer for Exynos IOMMU driver.
Signed-off-by: Marek Szyprowski
---
MAINTAINERS | 6 ++
1 file changed, 6 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 7bd927e..1e9c4df 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4336,6 +4336,12 @@ L: dri
This patch rewrites sysmmu_init_config function to make it easier to read
and understand.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 25 +
1 file changed, 9 insertions(+), 16 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu
This patch adds support for DMA domain type. Such domain have DMA cookie
prepared and can be used by generic DMA-IOMMU glue layer.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 19 +++
1 file changed, 15 insertions(+), 4 deletions(-)
diff --git a/drivers
This patch changes some internal functions to have access to the state of
sysmmu device instead of having only it's registers. This will make the
code ready for future extensions.
Signed-off-by: Marek Szyprowski
---
drivers/iommu/exynos-iommu.c | 40 +++---
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