ddutta 9f948ed07f gpu: nvgpu: add accessor methods to underlying objects of nvgpu_os_fence ...

channel_sync->wait_fd depends upon nvgpu_os_fence->program_waits which
invokes a channel_sync method and this leads to a circular dependency.

In order to resolve the above, constructed struct nvgpu_os_fence_sema and
struct nvgpu_os_fence_syncpt with interfaces that support conversion
between struct nvgpu_os_fence to above. Also, added the following
interfaces for retrieving syncpts and semaphore from the above structs
respectively.

void nvgpu_os_fence_sema_extract_nth_semaphore(...)
int nvgpu_os_fence_sema_get_num_semaphores(...)

void nvgpu_os_fence_syncpt_extract_nth_syncpt(...)
int nvgpu_os_fence_syncpt_get_num_syncpoints(...)

These enable channel_sync code to directly program the cmd_bufs
based on the syncpts and semaphore received using the above APIs
instead of the current state of doing the wait programming from
within nvgpu_os_fence's interfaces.

Jira NVGPU-1093

Change-Id: Ie411f0ba60bca38f66a0024f5dfca03ef0b836eb
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1827475
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2018-10-16 15:34:09 -07:00

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nvgpu

gpu: nvgpu: add accessor methods to underlying objects of nvgpu_os_fence

2018-10-16 15:34:09 -07:00