drm/i915: Reduce engine->emit_flush() to a single mode parameter

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Rather than passing a complete set of GPU cache domains for either
invalidation or for flushing, or even both, just pass a single parameter
to the engine->emit_flush to determine the required operations.

engine->emit_flush(GPU, 0) -> engine->emit_flush(EMIT_INVALIDATE)
engine->emit_flush(0, GPU) -> engine->emit_flush(EMIT_FLUSH)
engine->emit_flush(GPU, GPU) -> engine->emit_flush(EMIT_FLUSH | EMIT_INVALIDATE)

This allows us to extend the behaviour easily in future, for example if
we want just a command barrier without the overhead of flushing.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Gordon <david.s.gordon@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470174640-18242-8-git-send-email-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2016-08-02 22:50:25 +01:00

parent c7fe7d25ed

commit 7c9cf4e33a

7 changed files with 38 additions and 64 deletions

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2

drivers/gpu/drm/i915/i915_gem_context.c

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2

drivers/gpu/drm/i915/i915_gem_execbuffer.c

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10

drivers/gpu/drm/i915/i915_gem_gtt.c

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2

drivers/gpu/drm/i915/i915_gem_request.c

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23

drivers/gpu/drm/i915/intel_lrc.c

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57

drivers/gpu/drm/i915/intel_ringbuffer.c

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6

drivers/gpu/drm/i915/intel_ringbuffer.h

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