Shridhar Rasal da29f3cd97 video: tegra: host: dla: remove updating user bufffer with IOVA ...

This patch addresses two fixes:
[1]
Removes updating user buffers with IOVA.
- In address translation of address list of a tasks, handle and
  offset were replaced with actual IOVA into user buffer and same buffer
  was shared with engine. This approach is error prone.
- To fix this issue, kernel keeps IOVA list and shares with engine.
- In task submit, mem_handle list from user and updated in kernel
  copy of task.
- and while pinning user buffers, engine shared list updated with
  actual dma address retrieved from submit pin call.

[2]
Remove dynamic allocation required in address translation
- Required memory of 'kernel copy address list' and 'engine shared
  address list' both allocated from queue memory pool.
- and assigned and released along with task data.

DLA-286

Change-Id: I4d5a322adaff25e6e587d3305847540757850c77
Signed-off-by: Shridhar Rasal <srasal@nvidia.com>
Reviewed-on: http://git-master/r/1293124
Reviewed-by: Prashant Gaikwad <pgaikwad@nvidia.com>
GVS: Gerrit_Virtual_Submit

2023-04-14 11:46:40 +00:00

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tegra

video: tegra: host: dla: remove updating user bufffer with IOVA

2023-04-14 11:46:40 +00:00