[Intel-gfx] [PATCH 17/19] drm/i915/execlists: Record elsp offset during engine setup

Chris Wilson chris at chris-wilson.co.uk
Tue Jan 2 15:12:33 UTC 2018


Currently, we record the elsp register offset inside init-hw but we only
need to do it once during engine setup (after we know the mmio
iomapping).

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_lrc.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 5295059b6318..2e1adbaaec2f 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1494,9 +1494,6 @@ static int gen8_init_common_ring(struct intel_engine_cs *engine)
 	execlists->csb_head = -1;
 	execlists->active = 0;
 
-	execlists->elsp =
-		dev_priv->regs + i915_mmio_reg_offset(RING_ELSP(engine));
-
 	/* After a GPU reset, we may have requests to replay */
 	if (execlists->first)
 		tasklet_schedule(&execlists->tasklet);
@@ -2005,6 +2002,9 @@ static int logical_ring_init(struct intel_engine_cs *engine)
 	if (ret)
 		goto error;
 
+	engine->execlists.elsp =
+		engine->i915->regs + i915_mmio_reg_offset(RING_ELSP(engine));
+
 	return 0;
 
 error:
-- 
2.15.1



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