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| author | Mikko Perttunen <mperttunen@nvidia.com> | 2022-09-07 11:38:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-07 00:12:38 +0300 |
| commit | 47f18c557ae7172548835774f48a20ec6cc4017e (patch) | |
| tree | 1ad7c284a0ae966076d7fb8eb69cbf55b3ad1a3a /include | |
| parent | cab341c5cf65d7df188ef982bb7998f0670e9867 (diff) | |
| download | linux-47f18c557ae7172548835774f48a20ec6cc4017e.tar.xz | |
gpu: host1x: Select context device based on attached IOMMU
[ Upstream commit 8935002fc37fce1ad211d98a70f2fd42083c0594 ]
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>
[treding@nvidia.com: update !IOMMU_API stub signature]
Signed-off-by: Thierry Reding <treding@nvidia.com>
Stable-dep-of: 6cbab9f0da72 ("drm/tegra: Add call to put_pid()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/host1x.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/host1x.h b/include/linux/host1x.h index cb2100d9b0ff..dc55d9d3b94f 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -469,11 +469,13 @@ 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); #else static inline struct host1x_memory_context *host1x_memory_context_alloc(struct host1x *host1x, + struct device *dev, struct pid *pid) { return NULL; |