27.08.2020 18:54, Thierry Reding пишет:
...
>> The Tegra DRM has a very special quirk for ARM32 that was added in this
>> commit [2] and driver relies on checking of whether explicit or implicit
>> IOMMU is used in order to activate the quirk.
>>
>> [2]
>>
On Thu, Aug 27, 2020 at 10:05:14AM +0300, Dmitry Osipenko wrote:
> 24.08.2020 17:01, Robin Murphy пишет:
> ...
> >> Robin, thank you very much for the clarifications!
> >>
> >> In accordance to yours comments, this patch can't be applied until Tegra
> >> SMMU will support IOMMU_DOMAIN_IDENTITY and
24.08.2020 17:01, Robin Murphy пишет:
...
>> Robin, thank you very much for the clarifications!
>>
>> In accordance to yours comments, this patch can't be applied until Tegra
>> SMMU will support IOMMU_DOMAIN_IDENTITY and implement def_domain_type()
>> callback that returns IOMMU_DOMAIN_IDENTITY
On 2020-08-23 22:34, Dmitry Osipenko wrote:
21.08.2020 03:11, Robin Murphy пишет:
...
Hello, Robin! Thank you for yours work!
Some drivers, like this Tegra VDE (Video Decoder Engine) driver for
example, do not want to use implicit IOMMU domain.
That isn't (intentionally) changing here - the
21.08.2020 03:11, Robin Murphy пишет:
...
>> Hello, Robin! Thank you for yours work!
>>
>> Some drivers, like this Tegra VDE (Video Decoder Engine) driver for
>> example, do not want to use implicit IOMMU domain.
>
> That isn't (intentionally) changing here - the only difference should be
> that
On 2020-08-20 20:51, Dmitry Osipenko wrote:
20.08.2020 18:08, Robin Murphy пишет:
Now that arch/arm is wired up for default domains and iommu-dma, we no
longer need to work around the arch-private mapping.
Signed-off-by: Robin Murphy
---
drivers/staging/media/tegra-vde/iommu.c | 12
20.08.2020 22:51, Dmitry Osipenko пишет:
> Alternatively, the Tegra SMMU could be changed such that the devices
> will be attached to a domain at the time of a first IOMMU mapping
> invocation instead of attaching at the time of attach_dev() callback
> invocation.
>
> Or maybe even IOMMU core
20.08.2020 18:08, Robin Murphy пишет:
> Now that arch/arm is wired up for default domains and iommu-dma, we no
> longer need to work around the arch-private mapping.
>
> Signed-off-by: Robin Murphy
> ---
> drivers/staging/media/tegra-vde/iommu.c | 12
> 1 file changed, 12
Now that arch/arm is wired up for default domains and iommu-dma, we no
longer need to work around the arch-private mapping.
Signed-off-by: Robin Murphy
---
drivers/staging/media/tegra-vde/iommu.c | 12
1 file changed, 12 deletions(-)
diff --git
