redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

drm/i915/execlists: HWACK checking superseded checking port[0].count

Browse source 
The HWACK bit more generically solves the problem of resubmitting ESLP
while the hardware is still processing the current ELSP write. We no
longer need to check port[0].count itself.

References: ba74cb10c7 ("drm/i915/execlists: Delay writing to ELSP until HW has processed the previous write")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180517115647.17205-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2018-05-17 12:56:47 +01:00
parent b45a258897
commit 57877b7073
1 changed files with 0 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/gpu/drm/i915/intel_lrc.c
View file

@ -612,8 +612,6 @@ static bool __execlists_dequeue(struct intel_engine_cs *engine)
GEM_BUG_ON(!execlists_is_active(execlists,
EXECLISTS_ACTIVE_USER));
GEM_BUG_ON(!port_count(&port[0]));
if (port_count(&port[0]) > 1)
return false;
/*
* If we write to ELSP a second time before the HW has had