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gpu: host1x: Select context device based on attached IOMMU

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On Tegra234, engines that are programmed through Host1x channels can
be attached to either the NISO0 or NISO1 SMMU. Because of that, when
selecting a context device to use with an engine, we need to select
one that is also attached to the same SMMU.

Add a parameter to host1x_memory_context_alloc to specify which device
we are allocating a context for, and use it to pick an appropriate
context device.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Change-Id: I32af312c85164b72c14409d816d3b50ad5c7bfe5
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2811836
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Mikko Perttunen
2022-09-07 11:38:42 +03:00
committed by Laxman Dewangan
parent 283b2ed68b
commit fb56e97a0f
2 changed files with 5 additions and 0 deletions
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1
drivers/gpu/host1x/include/linux/host1x-next.h
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@@ -485,6 +485,7 @@ struct host1x_memory_context {
#ifdef CONFIG_IOMMU_API
struct host1x_memory_context *host1x_memory_context_alloc(struct host1x *host1x,
struct device *dev,
struct pid *pid);
void host1x_memory_context_get(struct host1x_memory_context *cd);
void host1x_memory_context_put(struct host1x_memory_context *cd);