Hi Will,
On Wed, May 20, 2015 at 06:09:26PM +0100, Will Deacon wrote:
> On Tue, May 19, 2015 at 04:24:35PM +0100, Joerg Roedel wrote:
> > > + /* Page sizes */
> > > + if (reg & IDR5_GRAN64K)
> > > + pgsize_bitmap |= SZ_64K | SZ_512M;
> > > + if (reg & IDR5_GRAN16K)
> > > + pgsize_b
Hi Robin,
More info, hope this make it clearer. We are calling dma_map_sg_attrs
with the following 2 sg. With IOMMU, we are expecting it got merged into
1 contiguous va range, but instead we get 2 va range.
sg0 dma_address 0xfeeddc00 size 0x400, offset 0xc00
sg1 dma_address 0xfeede000 size 0x100
Hi Robin,
Thanks.
While we test venc in v4l2, we get a problem:
When we enter the funtion[0], it will be break unexpectedly in the
funcion[1] while the offset of sg table is not zero. It is ok if the
offset is zero. Then I add more log in dma-iommu.c, please help check
below.
All w
On 23.05.2015 12:56, Kukjin Kim wrote:
> On 05/20/15 16:31, Javier Martinez Canillas wrote:
>> Hello Marek,
>>
>> On Tue, May 19, 2015 at 3:20 PM, Marek Szyprowski
>> wrote:
>>> Hello Everyone,
>>>
>>> This is yet another attempt to get Exynos SYSMMU driver with integrated
>>> with IOMMU & DMA-map
On 05/14/2015 04:00 PM, Laurent Pinchart wrote:
Hello,
This patch series attempts to implement support for deferring probe of both
IOMMU drivers and bus master drivers.
The relationship between bus masters and IOMMUs creates a strong ordering
during initialization of devices. As in the general
From: Joerg Roedel
A device that might be used for HSA needs to be in a direct
mapped domain so that all DMA-API mappings stay alive when
the IOMMUv2 stack is used.
Signed-off-by: Joerg Roedel
---
drivers/iommu/amd_iommu.c | 15 ++-
1 file changed, 14 insertions(+), 1 deletion(-)
From: Joerg Roedel
The list_head and target_dev members are not used anymore.
Remove them.
Signed-off-by: Joerg Roedel
---
drivers/iommu/amd_iommu.c | 1 -
drivers/iommu/amd_iommu_types.h | 8
2 files changed, 9 deletions(-)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iomm
From: Joerg Roedel
This function can be called by an IOMMU driver to request
that a device's default domain is direct mapped.
Signed-off-by: Joerg Roedel
---
drivers/iommu/iommu.c | 52 +++
include/linux/iommu.h | 6 ++
2 files changed, 58 i
From: Joerg Roedel
This function can fail. Propagate any errors back to the
initialization state machine.
Signed-off-by: Joerg Roedel
---
drivers/iommu/amd_iommu.c | 4 ++--
drivers/iommu/amd_iommu_init.c | 5 +++--
drivers/iommu/amd_iommu_proto.h | 2 +-
3 files changed, 6 insertions(+
From: Joerg Roedel
Add support to allocate direct mapped domains through the
IOMMU-API.
Signed-off-by: Joerg Roedel
---
drivers/iommu/amd_iommu.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 06d19e8..33bbb4d 100644
--- a
From: Joerg Roedel
This enables allocation of DMA-API default domains from the
IOMMU core and switches allocation of domain dma-api domain
to the IOMMU core too.
Signed-off-by: Joerg Roedel
---
drivers/iommu/amd_iommu.c | 311 ++--
drivers/iommu/amd_io
From: Joerg Roedel
Implement these two iommu-ops call-backs to make use of the
initialization and notifier features of the iommu core.
Signed-off-by: Joerg Roedel
---
drivers/iommu/amd_iommu.c | 210 +++--
drivers/iommu/amd_iommu_init.c | 31 ++
2
From: Joerg Roedel
With device intialization done in the add_device call-back
now there is no reason for this function anymore.
Signed-off-by: Joerg Roedel
---
drivers/iommu/amd_iommu.c | 40 +---
1 file changed, 1 insertion(+), 39 deletions(-)
diff --git a
From: Joerg Roedel
Signed-off-by: Joerg Roedel
---
drivers/iommu/amd_iommu.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 9da3f0e..dc8e44b 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2495,12
From: Joerg Roedel
This will be used to handle unity mappings in the iommu
drivers.
Signed-off-by: Joerg Roedel
---
drivers/iommu/iommu.c | 5 +
include/linux/iommu.h | 1 +
2 files changed, 6 insertions(+)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index ffad1ea..224c6dd
From: Joerg Roedel
Add the get_dm_regions and put_dm_regions callbacks to the
iommu_ops of the AMD IOMMU driver.
Signed-off-by: Joerg Roedel
---
drivers/iommu/amd_iommu.c | 37 +
1 file changed, 37 insertions(+)
diff --git a/drivers/iommu/amd_iommu.c b/driv
From: Joerg Roedel
Add two new functions to the IOMMU-API to allow the IOMMU
drivers to export the requirements for direct mapped regions
per device.
This is useful for exporting the information in Intel VT-d's
RMRR entries or AMD-Vi's unity mappings.
Signed-off-by: Joerg Roedel
---
drivers/io
From: Joerg Roedel
Make sure any errors reported from the IOMMU drivers get
progapated back to the IOMMU core.
Signed-off-by: Joerg Roedel
---
drivers/iommu/iommu.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 755e48
From: Joerg Roedel
Use the information exported by the IOMMU drivers to create
direct mapped regions in the default domains.
Signed-off-by: Joerg Roedel
---
drivers/iommu/iommu.c | 48
1 file changed, 48 insertions(+)
diff --git a/drivers/iommu
From: Joerg Roedel
The default domain will be used (if supported by the iommu
driver) when the devices in the iommu group are not attached
to any other domain.
Signed-off-by: Joerg Roedel
---
drivers/iommu/iommu.c | 32
1 file changed, 28 insertions(+), 4 delet
From: Joerg Roedel
Make sure we call the ->remove_device call-back on all
devices already initialized with ->add_device when the bus
initialization fails.
Signed-off-by: Joerg Roedel
---
drivers/iommu/iommu.c | 35 ++-
1 file changed, 26 insertions(+), 9 deletio
From: Joerg Roedel
This patch changes the behavior of the iommu_attach_device
and iommu_detach_device functions. With this change these
functions only work on devices that have their own group.
For all other devices the iommu_group_attach/detach
functions must be used.
Signed-off-by: Joerg Roede
Hi,
here is the second version of my patch-set to introduce
default domains into the iommu core. This time it has a lot
more patches, mostly because I added a proof of concept
implementation by converting the AMD IOMMU driver to make
use of it.
Converting the first driver to the new concept trigg
From: Joerg Roedel
Make use of the default domain and re-attach a device to it
when it is detached from another domain. Also enforce that a
device has to be in the default domain before it can be
attached to a different domain.
Signed-off-by: Joerg Roedel
---
drivers/iommu/iommu.c | 83 +++
From: Joerg Roedel
Do not remove the device from the IOMMU while the driver is
still attached.
Signed-off-by: Joerg Roedel
---
drivers/iommu/iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index f0e0a23..d69e0ca 100644
-
From: Joerg Roedel
Including the function name is only useful for debugging
messages. They don't belong into other messages from the
iommu core.
Signed-off-by: Joerg Roedel
---
drivers/iommu/iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/iommu.c b/dri
From: Joerg Roedel
Write a message to the kernel log when a device is added or
removed from a group and add debug messages to group
allocation and release routines.
Signed-off-by: Joerg Roedel
---
drivers/iommu/iommu.c | 9 +
1 file changed, 9 insertions(+)
diff --git a/drivers/iommu/
From: Joerg Roedel
This function can be used to request the current domain a
device is attached to.
Signed-off-by: Joerg Roedel
---
drivers/iommu/iommu.c | 18 ++
include/linux/iommu.h | 6 ++
2 files changed, 24 insertions(+)
diff --git a/drivers/iommu/iommu.c b/drivers/
I have a computer where I had noticed that I must not turn on IOMMU in
the BIOS, or Linux would crash on boot. The computer is Sun Ultra 20
workstation with dual-core 1st gen Opteron (175) and Nvidia CK804
chipset and 4G RAM. So IOMMU never worked for me before.
I investigated it more today - s
Hi Laurent,
On Fri, May 15, 2015 at 12:00:09AM +0100, Laurent Pinchart wrote:
> Failures to look up an IOMMU when parsing the DT iommus property need to
> be handled separately from the .of_xlate() failures to support deferred
> probing.
>
> The lack of a registered IOMMU can be caused by the lac
On Fri, May 15, 2015 at 12:00:08AM +0100, Laurent Pinchart wrote:
> The function isn't trivial, document its behaviour.
>
> Signed-off-by: Laurent Pinchart
> ---
> drivers/iommu/of_iommu.c | 13 +
> 1 file changed, 13 insertions(+)
Thanks for doing this.
Acked-by: Will Deacon
Wil
On Fri, May 15, 2015 at 12:00:06AM +0100, Laurent Pinchart wrote:
> The of_configure_dma() function configures both the DMA masks and ops.
> Moving DMA ops configuration to probe time would thus also delay
> configuration of the DMA masks, which might not be safe. To avoid issues
> split the config
(sorry for the mid-review delay, I got side-tracked yesterday evening)
On Fri, May 15, 2015 at 12:00:05AM +0100, Laurent Pinchart wrote:
> As part of moving DMA initializing to probe time the
> of_dma_deconfigure() function will need to be called from different
> source files. Make it public and m
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