From: Ville Syrjälä Date: Thu, 22 Oct 2015 12:35:00 +0000 (+0300) Subject: drm/i915: Add NEEDS_FORCEWAKE() checks for vlv/chv X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e97d8fbec130767236ead8641ae0205f541df68b;p=linux-beck.git drm/i915: Add NEEDS_FORCEWAKE() checks for vlv/chv 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 --- 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; \