[PATCH 5/5] drm/i915: Add NEEDS_FORCEWAKE() checks for vlv/chv

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Include an early NEEDS_FORCEWAKE() check for vlv and chv.
Hopefully that will avoid doing so many range checks in for many
register accesses (at least for all display registers).

Note that vlv already had the check in the write path since it shares
the gen6+ code for that.

Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/intel_uncore.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index f38e88b..f0f97b2 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -726,7 +726,9 @@ static u##x \
 vlv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \
 	enum forcewake_domains fw_engine = 0; \
 	GEN6_READ_HEADER(x); \
-	if (FORCEWAKE_VLV_RENDER_RANGE_OFFSET(reg)) \
+	if (!NEEDS_FORCE_WAKE(reg)) \
+		fw_engine = 0; \
+	else if (FORCEWAKE_VLV_RENDER_RANGE_OFFSET(reg)) \
 		fw_engine = FORCEWAKE_RENDER; \
 	else if (FORCEWAKE_VLV_MEDIA_RANGE_OFFSET(reg)) \
 		fw_engine = FORCEWAKE_MEDIA; \
@@ -741,7 +743,9 @@ static u##x \
 chv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \
 	enum forcewake_domains fw_engine = 0; \
 	GEN6_READ_HEADER(x); \
-	if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) \
+	if (!NEEDS_FORCE_WAKE(reg)) \
+		fw_engine = 0; \
+	else if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) \
 		fw_engine = FORCEWAKE_RENDER; \
 	else if (FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg)) \
 		fw_engine = FORCEWAKE_MEDIA; \
@@ -935,7 +939,8 @@ static void \
 chv_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \
 	enum forcewake_domains fw_engine = 0; \
 	GEN6_WRITE_HEADER; \
-	if (is_gen8_shadowed(dev_priv, reg)) \
+	if (!NEEDS_FORCE_WAKE(reg) || \
+	    is_gen8_shadowed(dev_priv, reg)) \
 		fw_engine = 0; \
 	else if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) \
 		fw_engine = FORCEWAKE_RENDER; \
-- 
2.4.9

_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/intel-gfx




[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]
  Powered by Linux