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When an async flip is performed, and TearFree is enabled on the CRTC
used for timing, we schedule a vblank event for completing the page
flip. The DRM event queuing code treated this event like a vblank event,
but it needs to be treated like a page flip event.
(Ported from amdgpu commit e2c7369cae65069aa93eed1c0b678f975ce5c274)
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This is to avoid submitting more flips while we are waiting for pending
ones to complete.
(Ported from amdgpu commit e52872da69ecc84dafb3355839e35b0383f0d228)
Acked-by: Alex Deucher <alexander.deucher@amd.com>
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Instead of processing DRM events directly from drmHandleEvent's
callbacks, there are three phases:
1. drmHandleEvent is called, and signalled events are re-queued to
_signalled lists from its callbacks.
2. Signalled page flip completion events are processed.
3. Signalled vblank events are processed.
This should make sure that we never call drmHandleEvent from one of its
callbacks, which would usually result in blocking forever.
(Ported from amdgpu commit 739181c8d3334ff14b5a607895dfdeb29b0d9020)
Acked-by: Alex Deucher <alexander.deucher@amd.com>
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Replacing the drmmode_crtc_wait_pending_event macro.
(Ported from amdgpu commit 6029794e8a35417faf825491a89b85f713c77fc1)
Acked-by: Alex Deucher <alexander.deucher@amd.com>
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And make radeon_drm_queue_handler not directly accessible outside of
radeon_drm_queue.c.
(Ported from amdgpu commit 0148283984c77f7a6e97026edc3093497547e0a4)
Acked-by: Alex Deucher <alexander.deucher@amd.com>
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Should make the radeon_drm_queue_alloc error handling clearer, and gets
rid of a compile warning about it returning NULL.
Reviewed-by: Alexandre Demers <alexandre.f.demers@gmail.com>
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If the memory for an entry was allocated at the same address as that for
a previously cancelled entry, the handler could theoretically be called
prematurely, triggered by the DRM event which was submitted for the
cancelled entry.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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This allows for a minor simplification of the code.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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v2: Rename struct radeon_drm_queue to struct radeon_drm_queue_event,
thanks to Richard Wilbur <richard.wilbur@gmail.com> for the suggestion.
Also changed the corresponding parameter and local variable names from
'q' to 'e'.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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