From: Ville Syrjälä Date: Thu, 22 Oct 2015 12:34:59 +0000 (+0300) Subject: drm/i915: Respin vlv/chv reagister access to look more like SKL X-Git-Tag: v4.14-rc1~2738^2~45^2~1246 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6a42d0f4b32d9f4c978bf03f286e488186ecba80;p=platform%2Fkernel%2Flinux-rpi.git drm/i915: Respin vlv/chv reagister access to look more like SKL Change the fw domain handling in the vlv/chv register read/write functions to look more like the SKL code, ie. have a single __force_wake_get() get call instead of multiple ones. Signed-off-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1445517300-28173-5-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 57af2c4..f38e88b 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -724,11 +724,14 @@ gen6_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ #define __vlv_read(x) \ 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)) \ - __force_wake_get(dev_priv, FORCEWAKE_RENDER); \ + fw_engine = FORCEWAKE_RENDER; \ else if (FORCEWAKE_VLV_MEDIA_RANGE_OFFSET(reg)) \ - __force_wake_get(dev_priv, FORCEWAKE_MEDIA); \ + fw_engine = FORCEWAKE_MEDIA; \ + if (fw_engine) \ + __force_wake_get(dev_priv, fw_engine); \ val = __raw_i915_read##x(dev_priv, reg); \ GEN6_READ_FOOTER; \ } @@ -736,14 +739,16 @@ vlv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ #define __chv_read(x) \ 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)) \ - __force_wake_get(dev_priv, FORCEWAKE_RENDER); \ + fw_engine = FORCEWAKE_RENDER; \ else if (FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg)) \ - __force_wake_get(dev_priv, FORCEWAKE_MEDIA); \ + fw_engine = FORCEWAKE_MEDIA; \ else if (FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg)) \ - __force_wake_get(dev_priv, \ - FORCEWAKE_RENDER | FORCEWAKE_MEDIA); \ + fw_engine = FORCEWAKE_RENDER | FORCEWAKE_MEDIA; \ + if (fw_engine) \ + __force_wake_get(dev_priv, fw_engine); \ val = __raw_i915_read##x(dev_priv, reg); \ GEN6_READ_FOOTER; \ } @@ -928,16 +933,18 @@ gen8_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace #define __chv_write(x) \ static void \ chv_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ - bool shadowed = is_gen8_shadowed(dev_priv, reg); \ + enum forcewake_domains fw_engine = 0; \ GEN6_WRITE_HEADER; \ - if (!shadowed) { \ - if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) \ - __force_wake_get(dev_priv, FORCEWAKE_RENDER); \ - else if (FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg)) \ - __force_wake_get(dev_priv, FORCEWAKE_MEDIA); \ - else if (FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg)) \ - __force_wake_get(dev_priv, FORCEWAKE_RENDER | FORCEWAKE_MEDIA); \ - } \ + if (is_gen8_shadowed(dev_priv, 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; \ + else if (FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg)) \ + fw_engine = FORCEWAKE_RENDER | FORCEWAKE_MEDIA; \ + if (fw_engine) \ + __force_wake_get(dev_priv, fw_engine); \ __raw_i915_write##x(dev_priv, reg, val); \ GEN6_WRITE_FOOTER; \ }