drm/i915/guc: Insert submit fences between requests in parent-child relationship

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The GuC must receive requests in the order submitted for contexts in a
parent-child relationship to function correctly. To ensure this, insert
a submit fence between the current request and last request submitted
for requests / contexts in a parent child relationship. This is
conceptually similar to a single timeline.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211014172005.27155-14-matthew.brost@intel.com

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Matthew Brost 2021-10-14 10:19:53 -07:00 • committed by John Harrison

parent 6b540bf6f1

commit bc95520491

4 changed files with 108 additions and 28 deletions

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5

drivers/gpu/drm/i915/gt/intel_context.h

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6

drivers/gpu/drm/i915/gt/intel_context_types.h

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5

drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c

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130

drivers/gpu/drm/i915/i915_request.c

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