From e97d8fbec130767236ead8641ae0205f541df68b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Thu, 22 Oct 2015 15:35:00 +0300 Subject: [PATCH] drm/i915: Add NEEDS_FORCEWAKE() checks for vlv/chv MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Link: http://patchwork.freedesktop.org/patch/msgid/1445517300-28173-6-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter Reviewed-by: Chris Wilson --- 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 f38e88b1f5e8..f0f97b288d0e 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; \