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

1 files changed, 3 insertions, 3 deletions

diff --git a/include/linux/nvhost_nvdla_ioctl.h b/include/linux/nvhost_nvdla_ioctl.h
index 02926b1fd..56044c85f 100644
--- a/include/linux/nvhost_nvdla_ioctl.h
+++ b/include/linux/nvhost_nvdla_ioctl.h
@@ -119,6 +119,8 @@ struct nvdla_ioctl_submit_task {
         __u8 num_postfences;
         __u8 num_input_task_status;
         __u8 num_output_task_status;
+#define NVDLA_MAX_BUFFERS_PER_TASK (256)
+        __u32 num_addresses;
         __u16 flags;
         __u16 reserved;
 
@@ -127,9 +129,7 @@ struct nvdla_ioctl_submit_task {
 
         __u64 input_task_status;
         __u64 output_task_status;
-
-        __u32 num_addresses;
-        struct nvdla_mem_handle address_list;
+        __u64 address_list;
 };
 
 /**